WO2025161435A1 - Electronic device - Google Patents

Abstract

Provided in the present application is an electronic device, comprising: a first side and a second side that are arranged opposite each other, a display screen being provided on the first side; a rear cover disposed on the second side; a support having a first end pivotally connected to the rear cover; an elastic member disposed between the support and the rear cover, one end of the elastic member being fixed on the rear cover, and the other end thereof being used for pushing a second end of the support so as to move the support about a rotation shaft in a direction away from the rear cover by a preset angle, the rotation shaft being a rotation shaft formed by a pivot point between the support and the rear cover; a locking mechanism for counteracting an elastic force of the elastic member; and a control circuit electrically connected to the locking mechanism, the control circuit being configured to control the locking mechanism to unlock so as to allow the second end of the support to pivot to the preset angle under the action of the elastic member, and to control the locking mechanism to restore a locking state so as to allow the support to remain attached to the rear cover when the support is in contact with the rear cover. The electronic device according to the embodiments of the present application can realize the automatic opening of the support, provide an easier user operation, and makes no noise.

Description

electronic devices

This application claims priority to the Chinese patent application filed with the China Patent Office on January 30, 2024, with application number 202410132705.2 and application name “Electronic Device”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the field of electronic equipment, and in particular to an electronic equipment.

Background Art

Some existing electronic devices, such as tablet computers, are designed with an integrated stand for user convenience. After the tablet computer is opened, the stand helps the tablet computer maintain a fixed standing position, thereby providing users with convenience for personal computer (PC) office work, audio and video entertainment, handwriting and drawing, etc.

The current stand can rotate around the axis on the back cover of the console and supports stable hovering at any angle within the rotation range. This design can meet the basic usage needs of users, but requires users to manually open the stand, lacking a one-step smart support experience. Especially in PC office use scenarios where the console and keyboard are combined, users need to use one hand to lift the console in the closed screen state away from the keyboard surface, and simultaneously use the other hand to pry open the stand so that the console can stand up, which is cumbersome and inconvenient.

Summary of the Invention

In view of this, the present application provides an electronic device for solving the problem of cumbersome operation when opening the current bracket.

Some embodiments of the present application provide an electronic device. The present application is introduced below from multiple aspects, wherein the embodiments and beneficial effects of the multiple aspects can be referenced to each other.

In a first aspect, the present application provides an electronic device comprising a first side and a second side arranged relative to each other, the first side being provided with a display screen, and further comprising: a back cover arranged on the second side; a bracket, the first end of the bracket being pivotally connected to the back cover; an elastic member arranged between the bracket and the back cover, one end of the elastic member being fixed to the back cover, and the other end being used to push the second end of the bracket so that the bracket moves a preset angle around a rotating shaft in a direction away from the back cover, the rotating shaft being a rotating shaft formed by a pivot point between the bracket and the back cover; a locking mechanism for offsetting the elastic force of the elastic member so that the second end of the bracket maintains a locked state in contact with the back cover; a control circuit electrically connected to the locking mechanism for controlling the unlocking of the locking mechanism so that the second end of the bracket pivots to a preset angle under the action of the elastic member. The electronic device according to the embodiment of the present application can realize automatic opening of the bracket, making user operation more convenient and quick.

As an embodiment of the present application, the control circuit also controls the locking mechanism to restore the locking force, so that when the bracket contacts the back cover, the bracket remains in contact with the back cover, so that the bracket can be locked to the back cover when the bracket needs to be closed.

As one embodiment of the present application, the locking mechanism includes: a first magnetic member, the first magnetic member being disposed on the back cover; a second magnetic member, the second magnetic member being disposed on the bracket, the first magnetic member and the second magnetic member being positioned opposite each other when the bracket is in contact with the back cover; and a control circuit electrically connected to the second magnetic member. When the locking mechanism is unlocked, the control circuit is configured to reduce the adsorption force of the second magnetic member on the first magnetic member. When the adsorption force is less than the elastic force of the elastic member, the locking mechanism is unlocked. This unlocking method has a simple structure and is easy to operate.

In one embodiment of the present application, the first magnetic member is a permanent magnet, and the second magnetic member is an electromagnet. When the electromagnet receives current, it generates a magnetic pole opposite to that of the permanent magnet, thereby eliminating the second magnetic member's attraction to the first magnetic member. This structure facilitates automated control, is simple, and is noiseless.

In one embodiment of the present application, the first magnetic member includes a first permanent magnet, and the second magnetic member includes a magnetic carrier plate slidably connected to the rear cover; a second permanent magnet disposed on the magnetic carrier plate and having a magnetic pole opposite to that of the first permanent magnet; and a driver electrically connected to the magnetic carrier plate and a control circuit. When the locking mechanism is unlocked, the driver, under the control of the control circuit, drives the magnetic carrier plate to move, gradually reducing the overlap between the first and second permanent magnets, thereby reducing the attraction of the second permanent magnet to the first permanent magnet. This structure is simple, easy to operate, and silent.

In one embodiment of the present application, the driving element includes a memory metal element, one end of which is connected to the rear cover and the other end to the magnetic carrier plate. Furthermore, a control circuit is electrically connected to the memory metal element. When the locking mechanism is unlocked, a current is supplied to the memory metal element, causing the memory metal element to contract and pull the magnetic carrier plate to move, gradually reducing the overlap between the first and second permanent magnets. This simple structure facilitates the reduction and elimination of the adsorption force.

As an embodiment of the present application, the driving member further includes: a return spring, one end of the return spring is connected to the back cover, and the other end is connected to the magnetic carrying plate, for driving the magnetic carrying plate to return to its original position.

As an embodiment of the present application, when the first magnetic member and the second magnetic member are in a locked state, the control circuit receives a trigger operation; in response to the trigger operation, the control circuit passes current to the second magnetic member to reduce the adsorption force of the second magnetic member on the first magnetic member.

As an embodiment of the present application, triggering operations include: pressing a specific key; establishing a connection between the electronic device and the keyboard; pressing a pressure sensor on the stand; lifting one side of the display screen away from the keyboard and rotating it relative to the keyboard; or lifting the electronic device and placing it upright on a supporting object. These triggering methods are simple, and user operations are more natural and smooth.

In one embodiment of the present application, the first magnetic member includes a plurality of first permanent magnets spaced apart in a first direction along a predetermined area of the bracket; the second magnetic member includes a plurality of second permanent magnets spaced apart in the first direction along a predetermined area of the back cover, with the second permanent magnets corresponding one-to-one to the first permanent magnets. This structure provides stronger adsorption and facilitates operation.

As one embodiment of the present application, the electronic device further includes a hinge assembly, which serves as the pivot point where the first end of the bracket is connected to the rear cover. The hinge assembly includes a base fixed to the rear cover; a rotating handle, one end of which is pivotally connected to the base and the other end of which is connected to the bracket; and an elastic member abutting the rotating handle. Under the elastic force of the elastic member, the rotating handle drives the second end of the bracket to pivot relative to the hinge to a predetermined angle. This structure is simple and enables the bracket to rotate about the hinge.

As an embodiment of the present application, a groove is provided on the base, and the groove includes a rotating section and a sliding section, the rotating section is close to the elastic member, the sliding section is away from the elastic member, and the rotating section is provided with an arc surface; the rotating shaft assembly also includes: an auxiliary rotating member slidably provided on the rotating section, an arc groove is formed in the auxiliary rotating member, the arc surface and the arc groove have the same center line, the center line is the axis of the rotating shaft, a rotating portion matching the arc groove is formed at the end of the rotating handle, and the rotating portion can slide in the arc groove around the axis; a slider, the slider is slidably provided on the base and slides in the sliding section of the groove; a torque handle, one end of the torque handle is pivotally connected to the rotating portion, and the other end is pivotally connected to the slider, and is used to limit the rotating portion from sliding back and forth in the arc groove to control the rotation angle of the rotating handle relative to the back cover. This structure can realize the rotation control of the rotating handle, making its rotation track smoother and the rotation process more natural and smooth.

As an embodiment of the present application, a first engaging surface is provided on the side wall of the arcuate groove, and a second engaging surface is provided on the rotating part for engaging with the first engaging surface to limit the sliding distance of the rotating part in the arcuate groove, thereby effectively preventing the rotating part from slipping.

In one embodiment of the present application, the rotating portion is provided with a rotating shaft extending parallel to the axis, one end of a torque handle is sleeved onto the rotating shaft, thereby pivotally connecting the torque handle to the rotating portion; the slider is provided with a torsion shaft extending parallel to the axis, the other end of the torque handle is sleeved onto the torsion shaft, thereby pivotally connecting the torque handle to the slider. This structure can achieve linkage of the entire lifting.

In one embodiment of the present application, a pin is provided on the base, and the elastic member is a torsion spring. The torsion spring comprises a spirally wound helix, which is sleeved on the pin; a first support and a second support extending from either end of the helix, the first support being fixed to the base; and a second support protruding from the center of the helix, which abuts against the surface of the rotating handle and slides along the surface of the rotating handle when the torsion spring is compressed. This simple structure facilitates providing elastic force to the bracket.

As an embodiment of the present application, the rotating shaft assembly further includes a fixing member, one end of which is fixed on the pin shaft, and the other end of which abuts against the back cover.

As an embodiment of the present application, the area where the rotating handle contacts the second support body is a smooth surface, which facilitates the natural and smooth sliding of the rotating handle and the elastic member, thereby improving the smoothness of the bracket rotation process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an electronic device in a standing state in some embodiments;

FIG2 is a schematic diagram of a user opening a stand of a tablet computer in some embodiments;

FIG3 is a schematic diagram of a partial structure of a hand-gripping portion of an electronic device in some embodiments;

FIG4 is a schematic structural diagram of a tablet computer according to an embodiment of the present application;

FIG5 is a schematic structural diagram of a tablet computer according to an embodiment of the present application from another angle;

FIG6 is a schematic diagram of an operation of triggering the bracket to pop open according to an embodiment of the present application;

FIG7 is a schematic structural diagram of the stand of the tablet computer according to an embodiment of the present application from a closed state to an open state;

FIG8 is a schematic structural diagram of an elastic member and a rotating shaft assembly according to an embodiment of the present application;

FIG9 is a schematic structural diagram of the elastic member and the rotating shaft assembly in an open state according to an embodiment of the present application;

FIG10 is a schematic structural diagram of the elastic member and the rotating shaft assembly at another angle according to an embodiment of the present application;

FIG11 is a schematic structural diagram of the elastic member and the rotating shaft assembly in an embodiment of the present application in a resilient state;

FIG12 is a schematic diagram of the three-dimensional structure of the elastic member and the rotating shaft assembly according to an embodiment of the present application;

FIG13 is a top view of the elastic member and the rotating shaft assembly according to an embodiment of the present application;

FIG14 is a cross-sectional view taken along line A-A in FIG13 ;

FIG15 is a schematic structural diagram of an auxiliary rotating member installed on a base according to an embodiment of the present application;

FIG16 is a schematic structural diagram of a rotating handle according to an embodiment of the present application;

FIG17 is a schematic diagram of the structure of the rotating handle and the auxiliary component in accordance with an embodiment of the present application;

FIG18 is a schematic diagram of a partial structure of the locking structure of the first embodiment of the present application;

FIG19 is a partial cross-sectional view taken along line A-A in FIG18 ;

FIG20 is a schematic diagram of a partial structure of the locking structure of the first embodiment of the present application;

FIG21 is a diagram showing the relationship between the adsorption force of the locking mechanism and the elastic force of the elastic member according to an embodiment of the present application;

FIG22 is a schematic diagram of the overall structure and a partially enlarged structure of the locking mechanism according to the second embodiment of the present application;

FIG23 is a comparison diagram of a permanent magnet in a front cross-sectional view and a top view of a tablet computer according to a second embodiment of the present application;

FIG24 is a schematic diagram of the unlocking process of the locking mechanism of the second embodiment of the present application.

Reference numerals:

Some examples:

Electronic device 10; host 11; back cover 12; bracket 13; keyboard 14; hinge 15; hand grip groove 16;

Examples of this application:

Tablet computer 100; host 110; display screen 120; back cover 130; bracket 140; hinge 150;

Elastic member 160; spiral body 161; first support body 162; second support body 163;

Locking mechanism 170; permanent magnet 171; electromagnet 172; first permanent magnet module 173; first permanent magnet 173a; second permanent magnet module 174; second permanent magnet 174a; magnetic carrier plate 174b; driving member 175; memory wire 175a; return spring 175b; fixing plate 175c; slide rail 177;

Keyboard 180;

Button 01; pressure sensor 02; magnet 03; gyroscope 04; acceleration sensor 05; middle frame 06; cover 07;

Rotating shaft assembly 190; base 191; groove 191a; rotating section a1; sliding section a2; elongated hole 191b;

Rotating handle 192; rotating portion 192a; pin 193; fixing member 194;

Auxiliary rotating member 195; arc-shaped groove 195a; first clamping surface b1; second clamping surface b2; first step surface c1; second step surface c2;

Slider 196; Torsion handle 197; Rotation shaft 198; Torsion shaft 199.

DETAILED DESCRIPTION

The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application.

In order to facilitate the understanding of the technical solution of the present application, the technical problems to be solved by the embodiments of the present application are first explained.

Referring to Figure 1, Figure 1 shows a schematic diagram of the structure of an electronic device in some embodiments in a standing state. As shown in Figure 1, the electronic device 10 includes a host 11 and a back cover 12 arranged on the back side of the host 11 (the back side where the display screen is located). Among them, the back cover 12 is connected to a bracket 13 via a rotating shaft 15. When the user uses the electronic device 10, if the host 11 is to be erected, the bracket 13 needs to be manually opened. However, this method of manually opening the bracket 13 lacks a one-step intelligent support experience, and the user experience is not ideal.

In addition, in other scenarios, referring to FIG2 , FIG2 shows a schematic diagram of the user's operation of opening the stand of an electronic device in some embodiments. As shown in (a)-(c) of FIG2 , in the PC office use scenario where the host 11 and the keyboard 14 are used together, the user not only needs to use one hand to lift the host 11 in the closed screen state away from the keyboard 14, but also needs another hand to pry open the stand 13 so that the host 11 can stand up. This operation method is contrary to the one-handed opening and closing function advocated by PC products, and the operation is cumbersome and inconvenient.

Referring to FIG3 , FIG3 shows a partial structural diagram of the hand grip portion of an electronic device in some embodiments. As shown in FIG3 , a hand grip groove 16 is provided on the side of the main body 11 of the electronic device. When the user manually opens the bracket 13, the hand grip groove 16 is used to Open the bracket 13. In this way, a finger groove 16 is processed on the side frame of the bracket 13 adjacent to the main unit 11. The existence of the finger groove 16 will destroy the consistency of the main unit 11 appearance.

In addition, in other embodiments, the hinge structure connecting the bracket 13 and the back cover 12 generally includes a base, a compression spring, and a special-shaped spring. With the current hinge structure, when the user manually opens the bracket, the special-shaped spring pushes the track to rotate, and the compressed compression spring releases its elastic force, which allows the bracket to receive unidirectional force, making it easier for the user to open it. However, the current assembly design position of the elastic component results in the entire hinge being too long and the hinge unit being large. Furthermore, it still requires manual opening and closing, which still presents problems of inconsistent appearance and cumbersome operation.

In order to solve the shortcomings of manually opening the integrated bracket in the above-mentioned embodiment, an embodiment of the present application provides an electronic device. By changing the connection method between the bracket and the back cover and designing a trigger scheme for automatic opening of the bracket, the electronic device can ensure that the structure of the electronic device is simple while ensuring that the user can open the bracket conveniently and reliably, thereby improving the user experience.

The electronic device according to the embodiment of the present application is described in detail below with reference to the accompanying drawings.

In the embodiments of the present application, the electronic device may be, but is not limited to, a tablet computer (personal computer), and may also be a candy-bar mobile phone, a foldable screen mobile phone, an e-book reader, a laptop computer, a personal digital assistant (PDA), a notebook computer, or other electronic device requiring support. In the following embodiments, the structure of the electronic device is described using a tablet computer as an example.

Please refer to Figure 4, which shows a schematic diagram of the structure of a tablet computer according to an embodiment of the present application. As shown in Figure 4, the tablet computer 100 includes a main unit 110. A display screen 120 is provided on the front side of the main unit 110 (i.e., the side facing the user during normal use, as an example of a first side), and a back cover 130 is provided on the back side of the main unit 110 (i.e., the side opposite the front side, as an example of a second side). A bracket 140 is pivotally connected to the back cover 130. As shown in Figure 4, the pivotal connection between the back cover 130 and the pivotal end of the bracket 140 (as an example of a first end) forms a pivot point a. The axis of the pivot point a itself or the connecting line between multiple pivot points forms a rotation axis 150 (as an example of a rotation axis). The support end of the bracket 140 (as an example of a second end) can rotate about the rotation axis 150 at a predetermined angle to move the support end of the bracket 140 away from the back cover 130, thereby providing support for the main unit 110. Alternatively, the support end of the bracket 140 contacts or fits against the main unit 110, forming a neatly designed structure that is easy to store. It should be understood that the pivot end refers to the portion of the bracket 140 near the top, or near the hinge 150, as shown in FIG4 ; the support end refers to the portion near the end that contacts a support object, such as a desktop, or the portion away from the hinge 150.

In conjunction with Figure 4 and with reference to Figure 5, Figure 5 shows a schematic structural diagram of another angle of the tablet computer according to an embodiment of the present application. As shown in Figures 4 and 5, the tablet computer 100 further includes an elastic member 160, a locking mechanism 170, and a control circuit (not shown) electrically connected to the locking mechanism 170. The elastic member 160 is disposed between the bracket 140 and the back cover 130. One end of the elastic member 160 is fixed to the back cover 130, and the other end is used to push the support end of the bracket 140 so that the bracket 140 moves around the rotation axis in a direction away from the back cover 130 by a preset angle α, such as 30°, 40°, 45°, or 50°.

In some embodiments of the present application, as shown in FIG5 , the preset angle α can be 40°. Since the opening angle γ of the conventional display screen 120 is between 105° and 120°, the maximum angle is 135°. Further, according to data research, the support angle used by users generally covers the widest angle of 110°. Therefore, the angle α of the opening of the bracket 140 is reflected as 40°, that is, the bracket 140 is constructed to automatically open at an angle of 0-40°. The angle β is manually adjustable in the range of 0-120°. That is to say, after the bracket 140 is automatically opened by 40°, if the user wants α to open to a larger angle, the angle α between the bracket 140 and the back cover 130 can be opened to a larger angle by manual adjustment, such as α=50°, 60°, etc. In this way, through the combination of automatic opening and manual adjustment, the user can have the best opening and closing experience, which is labor-saving, convenient and free.

As shown in Figure 5, the locking mechanism 170 acts as an activation switch for the bracket 140 and has two states: a locked state and an unlocked state. In the locked state, the support end of the bracket 140 contacts or abuts against a predetermined position of the rear cover 130, indicating that the bracket 140 is locked or closed. In the unlocked state, the support end of the bracket 140 rotates about the axis and moves away from the rear cover 130, thereby supporting the host 110.

The unlocked state and locked state described above, the mutual conversion process between the two can be realized by the control circuit. First, the conversion from the locked state to the unlocked state (referred to as the unlocking process) of the bracket 140 is explained. During the unlocking process, the control circuit controls the locking force of the locking mechanism 170 (such as attractive force or magnetic force, mechanical force of the engagement between structures, etc.) to decrease or disappear, so that the locking force of the locking mechanism 170 is less than the elastic force of the elastic member 160, and the support end of the bracket 140 pivots to the preset angle α under the action of the elastic member 160. Secondly, after the unlocking process is completed, the control circuit controls the locking force of the locking mechanism 170 to recover, and the locking mechanism 170 By using the locking force to offset the elastic force of the elastic member 160, the locking mechanism 170 can maintain the bracket 140 in a locked state in contact with the back cover 130 when the support end of the bracket 140 contacts the back cover 130. It should be noted that the locking force can be a magnetic attraction force or a locking force generated by the interaction between mechanical structures, such as the mechanical force generated by the insertion of a slot and a protruding tongue.

Since the switching between the locked state and the unlocked state of the bracket 140 is automatically controlled by the control circuit and the locking mechanism 170, the user does not need to manually open the bracket 140, thereby realizing automatic opening of the bracket 140, making operation more convenient and the structure simpler.

The control circuit can be disposed within the host 110 and can include a processor, a power supply, and wires for connecting the power supply and the locking mechanism, a switch disposed on the wires, and the like. The processor can be in communication with the switch. When necessary, for example, when the processor receives an instruction from the user and determines that the user wants to open the bracket, the processor sends an electrical signal to the switch, which receives the signal and executes an opening-closing action, thereby energizing the locking mechanism 170, thereby unlocking the locking mechanism. This application does not limit the specific structure and implementation of the control circuit. For details, reference can be made to the existing intelligent power supply method, which will not be described in detail here.

In the above embodiments, the rear cover, bracket, elastic member, locking mechanism and control circuit belong to the electronic device, are an integral part of the electronic device, and together with the host constitute the electronic device for explanation. In some embodiments, the rear cover, bracket, elastic member, locking mechanism and control circuit may be components of an auxiliary kit independent of the electronic device, and the auxiliary kit may be detachably connected to the electronic device. After the auxiliary kit is installed with the electronic device, the rear cover of the auxiliary kit (or the support plate) may fit tightly together with the rear cover of the electronic device, so that the electronic device can complete the function of automatic support through the auxiliary kit. In the embodiments of the present application, there is no limitation on the form of these components, for example, whether they exist in the form of a kit that is independent of the electronic device and detachably connected to the electronic device, or whether they exist in the form of a kit that directly belongs to the electronic device. In the following embodiments, it is taken as an example that these components all belong to the electronic device.

In addition, in order to improve the user experience, the operation of triggering the bracket to automatically pop open, or triggering the control circuit to control the locking mechanism to unlock may include the operation shown in Figure 6 below.

Referring to Figure 6, Figure 6 shows a schematic diagram of the operation of triggering the bracket to pop open according to an embodiment of the present application. As shown in Figure 6, the triggering operation can include the following five modes.

The first trigger mode is button triggering. As shown in (a) in Figure 6, the user can press button 01 (specific button) to trigger the control circuit to send a control signal to control the locking mechanism (locking mechanism 170 as shown in Figure 5) to unlock. Among them, the button 01 can be reused with the power button or volume button on the host 110. For example, it can be set to press and hold for 5 seconds, or press 3 times in a row to trigger the control circuit to send a control signal, or a separate dedicated button can be set separately based on human convenience. While holding the host 110, the user can press button 01 with his finger to trigger the bracket (such as the bracket 140 in Figure 5) to pop open, so that the bracket automatically and quickly assumes the upright state.

The second trigger mode is triggered by pressing the bracket surface. As shown in Figure 6 (b), a pressure sensor 02 is embedded on the inner surface of the bracket 140 or inside the back cover 130 of the host, and a certain pressure trigger range is set. For example, the pressure value is greater than 5N. When the user holds and presses the surface of the bracket 140 covering the pressure sensor 02, and the pressure is greater than 5N, the pressure sensor 02 sends a trigger signal to the control circuit. The control circuit receives the trigger signal and controls the locking mechanism to unlock. The bracket 140 is ejected under the action of the elastic member (such as the elastic member 160 in Figure 5).

The third trigger mode is triggered when the keyboard is connected. As shown in (c) in Figure 6, when the host 110 (equivalent to an electronic device) establishes a connection with the keyboard 180, the control circuit receives a connection signal from the host 110 connection sensor, and controls the locking mechanism (the locking mechanism 170 shown in Figure 5) to unlock, and the bracket (the bracket 140 shown in Figure 5) is ejected. Since under normal circumstances, the host 110 needs to be connected to the keyboard 180 to form a PC office mode, this trigger mode requires the user to perform two steps with both hands, that is, one hand holds the host 110 to connect with the keyboard 180, and the other hand opens the bracket (as shown in Figure 2). Compared with the previous two-step action required by the user, that is, one hand holds the host 110 to connect with the keyboard 180, and the other hand opens the bracket (as shown in Figure 2), the third trigger mode of the present application can be completed with one hand in one step after the bracket is designed to automatically eject.

The fourth trigger mode is screen-lifting trigger. As shown in (d) in Figure 6, when the host 110 and the keyboard 180 are in the screen-closed connection state, the user lifts the host 110 from the keyboard 180 with one hand. The control circuit receives the lifting operation, such as the magnetic attraction is reduced or disappears, controls the locking mechanism (the locking mechanism 170 shown in Figure 5) to unlock, and the bracket 140 is ejected. Among them, the host 110 is lifted off from the keyboard 180, which can be identified and determined by detecting the magnetic attraction of the magnet 03 provided inside the host 110 and combining the rotation angle of the gyroscope 04 in the host 110. And after the lifting angle is greater than a certain value, the bracket 140 is ejected, enabling the user to open and close the bracket with one hand.

The fifth trigger mode is table touch trigger. As shown in FIG6 (e), an acceleration sensor 05 is arranged at the bottom of the host 110. Set the acceleration range triggered by the collision, for example, the acceleration range is greater than 10m/s2. When the user holds the host 110 and collides it with the desktop and is within the sensing force range, the data of the acceleration sensor 05 sends a trigger signal to the control circuit. The control circuit receives the trigger signal, controls the locking mechanism to unlock, and the bracket 140 is popped open. Then the user can use the bracket 140 to support the host 110 on the desktop.

Referring to FIG7 , FIG7 shows a schematic structural diagram of the bracket of the tablet computer of the embodiment of the present application from the closed to the pop-up state. As shown in FIG7 (a), the bracket 140 of the tablet computer 100 is in the closed state (locked state), and the back cover 130 and the bracket 140 are on the same horizontal plane. When the user performs any of the trigger operations shown in FIG6 above, as shown in FIG7 (b), the control circuit controls the locking mechanism 170 to unlock, for example, the magnetic force between the magnets is reduced or disappears, or even repulsed to achieve unlocking, or the structure of the card structure automatically retracts, loses the mechanical force of the engagement, etc. to achieve unlocking, so that the bracket 140 is popped open by the elastic member 160, that is, the bracket 140 rotates a certain angle α around the rotating shaft 150.

The aforementioned trigger modes not only enable the stand to automatically open, but also allow users to operate it with one hand. Furthermore, the entire operation process is integrated with the user's normal computer opening habits, allowing the stand to automatically open naturally, further improving the user experience.

It is understandable that a tablet computer may have multiple trigger modes at the same time, or may have only one trigger mode, and this application does not limit this.

It should be noted that the recognition and detection process of user operations described above can refer to the specific implementation process in the existing technology. For example, the pressure sensor detects the value of the hand pressing pressure, the acceleration sensor detects the acceleration change of the object, the gyroscope detects the rotation angle of the object, etc., and can refer to the detection method of the technology. This application will not describe this in detail.

The structure and working principle of each component of the tablet computer 100 for realizing the automatic opening of the bracket 140 will be described in detail below with reference to the accompanying drawings.

In an embodiment of the present application, as shown in FIG7 , the bracket 140 can be ejected by the elastic member 160 and rotated about the rotation axis 150. The two key structures are the elastic member 160 and the rotation axis assembly 190 (the pivot point for pivotally connecting the bracket and the rear cover). The elastic member 160 is used to provide the elastic force to eject the bracket 140. The rotation axis assembly 190 can provide a physical rotation axis 150 or a virtual rotation axis 150.

In the following embodiments, the elastic member 160 and the rotating shaft assembly 190 , as well as the structure of the rotating shaft assembly having a physical rotating shaft 150 , are first described.

Referring to Figure 8, Figure 8 shows a schematic structural diagram of the elastic member and the rotating shaft assembly of an embodiment of the present application. As shown in Figure 8, the rotating shaft assembly 190 includes a base 191 and a rotating handle 192. Among them, the base 191 is fixed on the back cover (the back cover 130 shown in Figure 5). One end of the rotating handle 192 is pivotally connected to the base 191 through the rotating shaft 150, and the other end is connected to the bracket (such as the bracket 140 in Figure 7). One end of the elastic member 160 abuts against the rotating handle 192. Under the elastic force of the elastic member 160, the rotating handle 192 can drive the support end of the bracket (such as the bracket 140 in Figure 7) to pivot relative to the rotating shaft 150 to a preset angle. For example, the preset angle can be 30°, 40° or 50°. It should be noted that the rotation angle of the rotating handle 192 can be the same as or different from the opening angle of the elastic member 160.

Referring to Figure 9, Figure 9 shows a schematic diagram of the structure of the elastic member and the rotating shaft assembly in the embodiment of the present application in the pop-up state. As shown in Figure 9, when the rotating handle 192 is in the pop-up state, the rotation angle of the rotating handle 192 is a preset angle α, and the angle α can be the angle between the bracket (such as the bracket 140 in Figure 7) and the back cover (such as the back cover 130 in Figure 7). The angle at which the torsion spring naturally opens in the natural state is θ. Among them, the angle θ can be equal to the angle α or different. During actual manufacturing, a torsion spring with a reasonable angle can be selected according to the actual required size of the angle α. The embodiment of the present application does not specifically limit the size relationship between the angle θ of the torsion spring that naturally stretches and opens and the preset angle α.

In conjunction with Figure 8 and with reference to Figure 10 , Figure 10 illustrates another perspective structural diagram of the elastic member and rotating shaft assembly according to an embodiment of the present application. In this embodiment of the present application, as shown in Figures 8 and 10 , the elastic member 160 can be secured to the base 191 via a pin 193. The elastic member 160 is a torsion spring. The torsion spring comprises a spirally wound coil 161, first supports 162 extending from each end of the coil 161, and a second support 163 protruding from the center of the coil 161. The coil 161 is sleeved onto the pin 193. The first support 162 is secured to the base 191, while the second support 163 abuts against the surface of the rotating handle 192. When the torsion spring is compressed, the second support 163 slides along the surface of the rotating handle 192. Furthermore, when the second support 163 is naturally extended, the raised rotating handle 192 rotates precisely by a predetermined angle α (angle α shown in Figure 9 ). In this way, after the bracket is automatically opened, the rotating handle 192 can be directly rotated to the ideal angle required by the user without the need for manual adjustment by the user.

8 , in some embodiments of the present application, the area where the rotating handle 192 contacts the second support 163 is a smooth surface. Such a smooth surface is more conducive to the smooth sliding of the elastic member 160 during the compression and extension process.

Referring to Figure 11, Figure 11 shows a schematic diagram of the structure of the elastic member and the rotating shaft assembly in the embodiment of the present application in the open state. Among them, Figure 11 (a) shows the rotating handle 192 of the rotating shaft assembly in the closed state (locked state); Figure 11 (b) shows the structure of the rotating handle 192 of the rotating shaft assembly in the open state. As shown in Figure 11, after the rotating handle 192 in the closed state is bounced open by the elastic member 160, the sliding distance between the contact point of the elastic member 160 and the rotating handle 192 is L. Among them, the product of the sliding distance L and the length of the elastic member 160 in contact with the rotating handle 192 in the axial direction is the area where the rotating handle 192 contacts the second support body of the elastic member 160. This area is a smooth surface, which can reduce friction and facilitate the manual pushing force to offset the elastic force.

In some embodiments of the present application, the elastic member 160 may also be a common spring structure, with one end fixed to the rear cover (as shown in FIG5 ) and the other end connected to or abutting against the rotating handle (such as the rotating handle 192 in FIG8 ). The spring has a certain height. After the spring is extended, its height is just enough to ensure that the predetermined angle α between the bracket (as shown in FIG7 (b) bracket 140) and the rear cover is α (as shown in FIG7 (b) angle α).

As shown in Figure 8, in an embodiment of the present application, the hinge assembly 190 also includes a fixing member 194, which is arranged at an angle. For example, one end of the fixing member 194 is fixed on the pin shaft 193, and the other end abuts against the back cover (the back cover 130 shown in Figure 5), thereby making the hinge assembly 190 more firmly fixed on the back cover.

The elastic member 160 and the rotating shaft assembly 190 , as well as the structure of the rotating shaft assembly 190 having the virtual rotating shaft 150 , will be described below with reference to the accompanying drawings.

Referring to Figures 12-14, Figure 12 shows a schematic perspective view of the elastic member and shaft assembly of an embodiment of the present application. Figure 13 shows a top view of the elastic member and shaft assembly of an embodiment of the present application. Figure 14 is a cross-sectional view taken along line A-A in Figure 13.

As shown in FIG12 , to ensure better fit between the rotating handle 192 and the base 191, a groove 191a is provided on the base 191. The groove 191a includes a rotating section a1 and a sliding section a2. The rotating section a1 is located on the side close to the elastic member 160 and has an arcuate surface (not shown). The sliding section a2 is located on the side away from the elastic member 160.

As shown in Figures 12-14, the rotating shaft assembly 190 includes, in addition to the base 191 and rotating handle 192 described in Figure 8 of the above embodiment, an auxiliary rotating member 195, a slider 196, and a torque handle 197. The auxiliary rotating member 195 is slidably disposed on the rotating segment a1 and rotates and slides around the virtual rotating axis 150 via an arcuate surface.

Continuing with FIG14 , an arcuate groove 195a is formed in the auxiliary rotating member 195. The arcuate surface and the arcuate groove 195a have the same center line, which is the axis of the virtual rotating shaft 150. A rotating portion 192a is formed at the end of the rotating handle 192 to match the arcuate groove 195a. The rotating portion 192a can slide along the arcuate surface of the arcuate groove 195a around the virtual rotating shaft 150.

In an embodiment of the present application, the auxiliary rotating member 195 can confine the rotating portion 192a of the rotating handle 192 to a fixed range. For example, the rotating portion 192a can only rotate within the rotating section a1 of the groove 191a. In addition, because the auxiliary rotating member 195 itself can rotate relative to the base 191, combined with the rotation of the rotating handle 192 itself relative to the auxiliary rotating member 195, the combined rotation of the three components can increase the rotation angle of the rotating handle 192 relative to the back cover (such as the back cover 130 in (a) of Figure 7), which helps meet the demand for a larger rotation angle of the rotating handle 192. For example, as shown in Figures 5 and 14, when the user wants the angle α between the bracket 140 and the back cover 130 to be larger, such as 50°, 60°, etc., the user can manually push the bracket 140 to rotate about the rotation axis 150, causing the rotating handle 192 to disengage from the elastic member 160. At this time, the angle of the bracket 140 is assisted by the auxiliary rotating member 195 to rotate to a larger angle, thereby meeting the user's demand for a larger angle between the bracket 140 and the back cover 130.

As shown in FIG14 , in one embodiment of the present application, a rotating shaft 198 extending in a direction parallel to the axis of the rotating shaft 150 is provided on the rotating portion 192a, and a torsion shaft 199 extending in a direction parallel to the axis is further provided on the base 191. The two ends of the torsion shaft 199 are respectively connected to the sliders on both sides (such as the slider 196 in FIG12 ). One end of the torsion handle 197 is sleeved on the rotating shaft 198, and the other end is sleeved on the torsion shaft 199, so that the torsion handle 197 is pivotally connected to the rotating portion 192a and the slider 196 respectively. This connection structure can assist the rotating handle 192 in rotating when the rotating handle 192 rotates (i.e., when the bracket is ejected), through the torsion handle 197, the rotating handle 192 is assisted in rotating, thereby playing a torsional role in rotating around the axis, which is conducive to the stable rotation of the rotating portion 192a around the virtual rotating shaft 150.

In the embodiment of the present application, referring to FIG14 and in combination with FIG5 , when the user manually pushes the bracket 140 to open relative to the back cover 130, the greater the angle at which the rotating handle 192 rotates about the rotating axis 150, the greater the rotational torque of the rotating handle 192 increases the friction F between the rotating axis 198 and the torque axis 199. This allows the rotating handle 192 to maintain a fixed angle with the back cover 130, for example, α is 50° or 60°, under the damping effect of the larger friction F. This facilitates the bracket 140 to support the host 110. When the user manually pushes the bracket 140, after the manual push force exceeds the friction F, the bracket 140 moves closer to the back cover, achieving the final locked state.

12, the slider 196 is slidably disposed on the base 191, and the slider 196 slides in the sliding section a2 of the groove 191a. For example, an elongated hole 191b is provided in the base 191, and a slider 196, or a portion thereof, is positioned within the elongated hole 191b, allowing the slider 196 to slide within a confined space. The elongated hole 191b extends in the direction of the slider 196's movement, serving as a guide for the movement. This structure limits the arc length of the rotating portion 192a and prevents the rotating portion 192a from slipping.

Continuing with reference to FIG12 , one end of the torque handle 197 is pivotally connected to the rotating portion 192a, and the other end is pivotally connected to the slider 196, for limiting the rotating portion 192a from sliding back and forth in the arc-shaped groove 195a, thereby controlling the rotation angle of the rotating handle 192 relative to the rear cover (such as the rear cover 130 in FIG7 ).

In the embodiment of the present application, by setting structures such as the slider 196, the torque handle 197 and the auxiliary rotating part 195 and the connection relationship between the various components, the rotation handle 192 around the virtual rotating axis 150 is achieved, which not only limits the sliding of the rotating handle 192, but also makes the coordination of the entire structural parts smoother.

Referring to Figures 15-17, Figure 15 shows a structural schematic diagram of the auxiliary rotating part 195 of an embodiment of the present application installed on the base; Figure 16 shows a structural schematic diagram of the rotating handle of an embodiment of the present application; Figure 17 shows a structural schematic diagram of the rotating handle and the auxiliary part of an embodiment of the present application.

As shown in Figures 15 to 17, a first locking surface b1 is provided on the side wall of the arc-shaped groove 195a of the auxiliary rotating part 195, and a second locking surface b2 is provided on the rotating part 192a for engaging with the first locking surface b1, so as to limit the sliding distance of the rotating part 192a in the arc-shaped groove 195a to avoid slipping.

Continuing with Figures 15-17 , the auxiliary rotating member 195 and the rotating portion 192a are formed with stepped surfaces arranged in a stair-like pattern at their mating locations. Specifically, a first, outwardly convex stepped surface c1 is formed on the inner side of the auxiliary rotating member 195, while second, inwardly concave stepped surfaces c2, which mate with the first stepped surface c1, are formed on either side of the rotating portion 192a. The combination of the first and second stepped surfaces c1, combined with the arcuate surfaces of the arcuate groove 195a, restricts the sliding motion of the rotating portion 192a. This not only allows the rotating portion 192a to slide within a fixed arcuate track, but also simplifies the overall structure, provides a more secure connection, and enhances the sliding stability of the structural components.

The above embodiments are descriptions of the structure and working principle of the elastic member and the shaft assembly. The locking mechanism of the embodiment of the present application will be described below in conjunction with specific embodiments.

The locking mechanism of the embodiment of the present application is described below in combination with two different embodiments.

First embodiment.

Please refer to Figures 18 and 20. Figure 18 shows a schematic diagram of the partial structure of the locking structure of the first embodiment of the present application; Figure 19 is a partial cross-sectional view of A-A in Figure 18; and Figure 20 shows a schematic diagram of the partial structure of the locking structure of the first embodiment of the present application.

As shown in Figures 18-20, the locking mechanism 170 includes a permanent magnet 171 (first magnetic member) and an electromagnet 172 (second magnetic member), and the control circuit (not shown) is electrically connected to the electromagnet 172. The permanent magnet 171 is disposed on the bracket 140; the electromagnet 172 is disposed on the back cover 130. When the bracket 140 is in contact with the back cover 130, the positions of the permanent magnet 171 and the electromagnet 172 are relative, so that the magnets can attract each other and generate an adsorption force. When the adsorption force is greater than the elastic force of the elastic member (elastic member 16 in Figure 12), the bracket 140 can be locked to the back cover 130.

In the embodiment of the present application, the electromagnet 172 may have multiple coils wound around an iron core, and the iron core corresponds to the position of the permanent magnet 171. Based on the need for matching magnetic forces, a series or parallel connection can be designed. For example, the winding direction can be set based on the need for magnetic poles such as north and south poles to obtain different magnetic poles.

When the locking mechanism 170 is unlocked, the control circuit can pass current into the electromagnet 172. Under the action of the current, the coil in the electromagnet 172 will generate a repulsive force opposite to the original adsorption force, that is, the magnetic pole is opposite to the end opposite to the permanent magnet 171, thereby eliminating the adsorption force of the locking mechanism 170. In this way, the elastic force of the elastic member (elastic member 16 in Figure 12) is greater than the adsorption force, which bounces the bracket 140 open, realizing the automatic opening of the bracket 140. The time for the control circuit to pass current to the electromagnet can be, for example, 1 millisecond, 2 milliseconds or 3 milliseconds, or a longer or shorter time. After the bracket 140 is opened, the control circuit stops passing current to the electromagnet 172, restoring the original adsorption force of the electromagnet 172, thereby restoring the locking function of the locking mechanism 170. This control method is time-saving and energy-saving.

As shown in Figures 18 and 19, the electromagnet 172 can be multiple pieces, and the multiple electromagnets 172 can be evenly arranged at the tail of the back of the middle frame 06, the other side of which is the display screen 120. In addition to assembling the electromagnet 172, the back of the middle frame 06 also needs to be able to layout other components required by the host, such as a button module, etc. After all parts are assembled, the back cover 130 is covered. The back cover 130 is located above the electromagnet 172, so that the electromagnet 172 cannot directly contact the permanent magnet 171 glued to the tail of the bracket 140. The upper surface of the permanent magnet 171 can be optimized for appearance by using a cover sheet. This structure is not only neat and beautiful in appearance, but also can prevent the permanent magnet 171 and the electromagnet 172 from being exposed, better protecting the locking mechanism 170.

The following describes the principle of the force that causes the bracket to automatically open by cooperating between the locking mechanism and the elastic member with reference to the accompanying drawings.

Referring to Figure 21, Figure 21 shows a diagram showing the relationship between the adsorption force of the locking mechanism and the elastic force of the elastic member of an embodiment of the present application. As shown in Figure 21, when the locking mechanism is in the locked state (closed state), when the control circuit does not energize the electromagnet 172, the permanent magnet 171 is attracted to the iron core in the coil, and the electromagnet 172 generates an adsorption force F_magnetic after contact with the permanent magnet 171 (the locking mechanism 170 is in the locked state). When the relationship between F_magnetic and the elastic force of the torsion spring is F_magnetic ≥ (F_torsion spring × z-G_bracket × y)/x, it can be understood that the adsorption force F_magnetic is greater than or equal to the elastic force of the torsion spring, and the bracket 140 is closed, that is, the locking mechanism 170 is in the locked state. Among them, F_magnetic represents the adsorption force between the electromagnet and the permanent magnet. (F_torsion spring × z-G_bracket × y)/x can be equivalent to the elastic force of the torsion spring.

When the control circuit energizes electromagnet 172, it generates the same magnetic field as permanent magnet 171 (magnetic force represented by F_push-spring). The relationship between F_magnet and the torsion spring force is: ΔF_magnet = F_magnet - F_push-spring < (F_torsion spring × z - G_bracket × y) / x. At this point, it can be understood that the torsion spring force is greater than the adsorption force F_magnet, causing bracket 140 to spring open (unlocking process). The entire unlocking process takes only milliseconds to trigger the power supply, making it fast, stable, and low-power.

Second embodiment.

Referring to Figure 22, Figure 22 shows the overall structure of the locking mechanism of the second embodiment of the present application, as well as a partially enlarged schematic diagram of the structure. In Figure 22, A is an enlarged transparent schematic diagram of the structure at point A in the main figure; A-A in Figure 22 is a partial cross-sectional view taken along the A-A direction in the main figure; and B-B in Figure 22 is a partial cross-sectional view taken along the B-B direction in the main figure.

As shown in the main diagram of FIG22 , the tablet computer 100 includes a main unit 110, a back cover 130 mounted on the main unit 110, and a bracket 140 mounted on the back cover 130. The locking mechanism 170 includes a first permanent magnet module 173 (first magnetic member) and a second permanent magnet module 174 (second magnetic member). The first permanent magnet module 173 is mounted on the inner sidewall of the bracket 140, while the second permanent magnet module 174 is mounted on the back cover 130. The first permanent magnet module 173 and the second permanent magnet module 174 are positioned opposite each other.

As shown in B-B of Figure 22 , the first permanent magnet module 173 includes a first permanent magnet 173a. The first permanent magnet 173a is encapsulated in the bracket 140 by a cover sheet 07.

As shown in Figure 22, the second permanent magnet module 174 includes a second permanent magnet 174a, a magnetic carrier plate 174b and a driving member 175. The magnetic carrier plate 174b is slidably connected to the back cover 130, for example, it can be slidably connected through a slide rail 177. The second permanent magnet 174a is arranged on the magnetic carrier plate 174b and can move with the magnetic carrier plate 174b. The magnetic poles of the second permanent magnet 174a and the opposite side of the first permanent magnet 173a are opposite. The driving member 175 is electrically connected to the magnetic carrier plate 174b and the control circuit. When the user needs to unlock the locking mechanism 170, a trigger operation (the trigger operation shown in Figure 6) can be performed to trigger the control circuit to work. The control circuit drives the magnetic carrier plate 174b to move, so that the overlapping part of the first permanent magnet 173a and the second permanent magnet 174a gradually decreases, so as to reduce the adsorption force of the second permanent magnet 174a on the first permanent magnet 173a. When the adsorption force is less than the elastic force of the elastic member, the bracket 140 is bounced open by the elastic force of the elastic member (the implementation principle can be referred to the corresponding description in Figure 21).

Continuing with reference to A in FIG. 22 , driver 175 includes a memory wire 175a (memory wire). One end of memory wire 175a is connected to the rear cover, and the other end is connected to magnetic plate 174b. Memory wire 175a is electrically connected to the control circuit. When locking mechanism 170 is unlocked, the control circuit supplies current to memory wire 175a. This current generates heat, causing memory wire 175a to contract and pull magnetic plate 174b to move, gradually reducing the overlap between first permanent magnet 173a and second permanent magnet 174a. This automatically causes bracket 140 to open.

Continuing to refer to Figure 22, as shown in A in Figure 22, the driving member 175 also includes a reset spring 175b, one end of which is connected to the back cover 130, and the other end is connected to the magnetic plate 174b, for driving the magnetic plate 174b to return to its original position, so that when the bracket 140 is closed, the first permanent magnet 173a and the second permanent magnet 174a are aligned to restore the adsorption force.

In addition, as shown in A in Figure 22, a fixing plate 175c can be provided on the bracket, and the memory wire 175a and the return spring 175b are fixed to the bracket through the fixing plate 175c, making the connection between the memory wire 175a and the return spring 175b and the bracket more convenient and firm.

The working principle of the locking mechanism in the second embodiment will be described in detail below with reference to the accompanying drawings.

Refer to Figure 23, which shows a comparison of the front cross-sectional view and top view of the permanent magnet of the tablet computer according to the second embodiment of the present application. Figure 22(a) is a cross-sectional view of the tablet computer in a closed state; Figure 22(b) is a schematic diagram of the partial structure of the locking mechanism on the rear cover of the main unit.

As shown in (a) of FIG23 , when the locking mechanism is in the locked state (bracket closed state), the plurality of first permanent magnets 173a and the plurality of second permanent magnets 174a are aligned one by one, and the magnetic poles of the two are opposite, presenting a magnetic attraction (adsorption force) state of attraction. At this time, the adsorption force of the locking mechanism is the largest, which is greater than the elastic force of the elastic member, so that the bracket 140 maintains contact with the back cover 130. As shown in (b) of FIG23 , When the bracket 140 is closed, the memory wire 175a and the return spring 175b are in a natural inactive state, which ensures that the first permanent magnet 173a and the plurality of second permanent magnets 174a are aligned one by one.

In conjunction with Figure 23 and with reference to Figure 24, Figure 24 shows a schematic diagram of the unlocking process of the locking mechanism of the second embodiment of the present application. As shown in Figures 23 and 24, when the user performs a trigger operation, the control circuit receives the trigger operation and begins to pass current to the memory wire 175a, causing the memory wire 175a to heat instantly. The memory wire 175a contracts by a length k due to heat, causing the magnetic carrier plate to slide a distance k in the contracting direction, causing the first permanent magnet 173a and the second permanent magnet 174a to be misaligned, that is, they are not aligned or not completely aligned. This causes the magnetic attraction or adsorption force to weaken or disappear, and the elastic force of the elastic member 160 takes the dominant role, causing the bracket 140 to be ejected. After a short period of power-on (milliseconds), the control circuit de-energizes the memory wire 175a. At this point, the bracket 140 has been ejected, and the memory wire 175a loses its contraction force. Furthermore, the compressed return spring 175b resets, pushing the magnetic carrier plate 174b in the opposite direction, returning the magnetic carrier plate 174b to its original position. As the magnetic plate 174b returns to its original position, the memory wire 175a is pulled back to its original shape. When the bracket 140 is pressed into close contact with the rear cover 130, the first permanent magnets 173a and the second permanent magnets 174a are once again aligned, and the magnetic attraction maintains the closed state. The entire power-on time is milliseconds, resulting in no noise and low power consumption.

In summary, the electronic device provided in the embodiment of the present application utilizes a magnetic adsorption solution of elastic parts and a locking mechanism, which is triggered by short-term power-on. The principle and structural design are simple, and can take into account the magnetic adsorption requirements in the closed state, and can realize automatic opening of the bracket. The user operation is more convenient, noiseless, energy-saving, and the user experience is greatly improved.

It should be noted that the mutual parallelism in this application is not absolute parallelism. Approximate parallelism due to processing errors and assembly errors (for example, the angle between two structural features is 0.1°) is also within the scope of mutual parallelism in this application. The axisymmetry in this application is not absolute axisymmetry. Approximate axisymmetry due to processing errors and assembly errors (for example, part of the structure is offset by a certain distance or angle relative to the axis of symmetry) is also within the scope of axisymmetry in this application. The central symmetry in this application is not absolute central symmetry. Approximate central symmetry due to processing errors and assembly errors (for example, part of the structure is offset by a certain distance or angle relative to the axis of symmetry) is also within the scope of central symmetry in this application. This application does not make specific restrictions on this.

It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this application in specific circumstances.

Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims (16)

An electronic device comprises a first side and a second side arranged opposite to each other, wherein the first side is provided with a display screen, and is characterized by further comprising: a back cover disposed on the second side; a bracket, wherein a first end of the bracket is pivotally connected to the rear cover; an elastic member disposed between the bracket and the back cover, one end of the elastic member being fixed to the back cover, and the other end being used to push the second end of the bracket to move the bracket around a rotation axis in a direction away from the back cover by a preset angle, the rotation axis being a rotation axis formed by a pivot point between the bracket and the back cover; a locking mechanism, configured to offset the elastic force of the elastic member so as to maintain the second end of the bracket in a locked state of contact with the rear cover; The control circuit is electrically connected to the locking mechanism and is used to control the locking mechanism to unlock so that the second end of the bracket pivots to the preset angle under the action of the elastic member. The electronic device according to claim 1 is characterized in that the control circuit further controls the locking mechanism to restore the locking force, so that when the bracket contacts the back cover, the bracket remains in contact with the back cover. The electronic device according to claim 1 or 2, wherein the locking mechanism comprises: a first magnetic member, wherein the first magnetic member is disposed on the back cover; a second magnetic member, the second magnetic member being disposed on the bracket, and when the bracket is in contact with the back cover, the first magnetic member and the second magnetic member are positioned opposite to each other; The control circuit is electrically connected to the second magnetic member, and is used to control the second magnetic member to reduce the adsorption force of the first magnetic member when unlocking the locking mechanism, and when the adsorption force is less than the elastic force of the elastic member, the locking mechanism is unlocked. The electronic device according to claim 3 is characterized in that the first magnetic member is a permanent magnet, and the second magnetic member is an electromagnet, and after receiving current, the electromagnet generates a magnetic pole opposite to that of the permanent magnet, so that the adsorption force of the second magnetic member on the first magnetic member is reduced. The electronic device according to claim 3, wherein: The first magnetic member includes a first permanent magnet, The second magnetic member includes: a magnetic carrying plate, the magnetic carrying plate being slidably connected to the rear cover; a second permanent magnet, disposed on the magnetic carrier plate and having a magnetic pole opposite to that of the first permanent magnet; A driving member is electrically connected to the magnetic carrying plate and the control circuit. When the locking mechanism is unlocked, the driving member is used to drive the magnetic carrying plate to move under the control of the control circuit, so that the overlapping portion between the first permanent magnet and the second permanent magnet gradually decreases, thereby reducing the adsorption force of the second permanent magnet on the first permanent magnet. The electronic device according to claim 5, wherein the driving component comprises: a memory metal piece, one end of which is connected to the back cover, and the other end of which is connected to the magnetic carrying plate; and The control circuit is electrically connected to the memory metal part, and is used to pass current into the memory metal part when the locking mechanism is unlocked. After the current is passed through the memory metal part, the memory metal part contracts and pulls the magnetic carrier plate to move, so that the overlapping part between the first permanent magnet and the second permanent magnet gradually decreases. The electronic device according to claim 5, wherein the driving component further comprises: A return spring, one end of which is connected to the rear cover, and the other end of which is connected to the magnetic carrying plate, is used to drive the magnetic carrying plate to return to its original position. The electronic device according to any one of claims 3 to 7, wherein when the first magnetic member and the second magnetic member are in a locked state, The control circuit receives a trigger operation; In response to the triggering operation, the control circuit supplies current to the second magnetic member to reduce the attraction force of the second magnetic member on the first magnetic member. The electronic device according to claim 8, wherein the triggering operation comprises: Targeting specific button presses; The electronic device establishes a connection with the keyboard; pressing a pressure sensor on the bracket; One side of the display screen is lifted away from the keyboard and rotated relative to the keyboard; or, The electronic device is picked up and erected on a supporting object. The electronic device according to any one of claims 5 to 7, further comprising a hinge assembly, wherein the hinge assembly is the pivot point where the first end of the bracket is connected to the back cover. The rotating shaft assembly includes: a base, the base being fixed on the back cover; a rotating handle, one end of which is pivotally connected to the base and the other end of which is connected to the bracket; One end of the elastic member abuts against the rotating handle. Under the elastic force of the elastic member, the rotating handle drives the second end of the bracket to pivot to the preset angle relative to the rotating shaft. The electronic device according to claim 10, characterized in that a groove is provided on the base, the groove includes a rotating section and a sliding section, the rotating section is close to the elastic member, the sliding section is away from the elastic member, and the rotating section has an arcuate surface; The rotating shaft assembly further includes: An auxiliary rotating member is slidably disposed on the rotating section, wherein an arcuate groove is formed in the auxiliary rotating member, wherein the arcuate surface and the arcuate groove have the same center line, which is the axis of the rotating shaft, and a rotating portion matching the arcuate groove is formed at the end of the rotating handle, wherein the rotating portion can slide in the arcuate groove around the axis; a slider, the slider being slidably disposed on the base and sliding within the sliding section of the groove; A torque handle, one end of which is pivotally connected to the rotating part and the other end of which is pivotally connected to the slider, is used to limit the rotating part from sliding back and forth in the arc groove to control the rotation angle of the rotating handle relative to the back cover. The electronic device according to claim 11 is characterized in that a first clamping surface is provided on the side wall of the arc-shaped groove, and a second clamping surface is provided on the rotating part for engaging with the first clamping surface to limit the sliding distance of the rotating part in the arc-shaped groove. The electronic device according to claim 11, wherein the rotating portion is provided with a rotating shaft extending in a direction parallel to the axis, and one end of the torque handle is sleeved on the rotating shaft so that the torque handle is pivotally connected to the rotating portion; The slider is provided with a torsion shaft whose extending direction is parallel to the axis. The other end of the torsion handle is sleeved on the torsion shaft so that the torsion handle is pivotally connected to the slider. The electronic device according to claim 11, wherein a pin is provided on the base, the elastic member is a torsion spring, and the torsion spring comprises: A spiral body formed by spiral winding, wherein the spiral body is sleeved on the pin shaft; a first supporting body and a second supporting body respectively extending from two ends of the spiral body, wherein the first supporting body is fixed on the base; and A second support body protrudes from the middle of the spiral body, the second support body abuts against the surface of the rotating handle, and when the torsion spring is compressed, the second support body slides along the surface of the rotating handle. The electronic device according to claim 14 is characterized in that the hinge assembly further includes a fixing member, one end of which is fixed to the pin shaft and the other end of which abuts against the back cover. The electronic device according to claim 14 or 15, characterized in that the area where the rotating handle contacts the second support body is a smooth surface.