ES2833963T3 - Pushbutton switch - Google Patents

Abstract

A push-button switch, comprising: a rocker bar (1) supported in a rocker manner on a base (4) and having a first side (11) and a second side (12) opposite each other; an actuator (2) connected to the first side of the rocker bar (1) and being rotatable between a first limiting position and a second limiting position; an electrically conductive bridge (3) having a movable contact (31) and deflectorily coupled to the second side of the rocker bar (1); an elastic element (5, 5 ') coupled between the actuator (2) and the base (4) and operably connected to the rocker bar (1); and a pushbutton (6), configured to press the actuator (2) in one of the first limiting position and in the second limiting position while being pushed, to actuate the actuator (2) and the rocker bar (1) to rotate around of a tilting shaft, in such a way that the tilting bar (1) drives the electrically conductive bridge (3) to bend, which makes the moving contact contact or disconnect a fixed contact (7); wherein the elastic element (5, 5 ') is configured to be driven by the rocker bar (1) so that it is elastically deformed when the button (6) is pressed to cause the rocker bar (1) to tilt, while that when the button (6) is released, the elastic element (5, 5 ') that is elastically deformed drives the actuator (2) to rotate from one of the first limiting position and the second limiting position to the other of the first position limiting and the second limiting position, in which the rocker bar (1) has a first end (13) and a second end (14) in a direction of the rocker axis, characterized in that the actuator (2) is connected to the rocker bar (1) at the first end of the rocker bar (1), and the elastic element (5, 5 ') extends between the first end (13) and the second end (14) of the rocker bar (1) in the first side (11) of the rocker bar (1).

Description

DESCRIPTION

Pushbutton switch

Field

Various embodiments of the present invention relate to the field of switches and, more specifically, to a pushbutton switch.

Background

A pushbutton switch is a typical switch type, which alternately connects or disconnects one circuit or alternatively connects two circuits by repeated pushbutton operations.

When the pushbutton is pressed, the present pushbutton switch causes the actuator and the rocker bar to swing about an axis perpendicular to the direction of the pushbutton movement, such that the electrically conductive bridge driven by the rocker bar bends between two positions to connect or disconnect a circuit. This type of pushbutton switch usually causes the elastic element to deform by the bending action of the electrically conductive bridge, so that the actuator bends to a further operating position, so that the next push operation on the pushbutton can depressing the actuator on the other side of the rocker bar axis to cause the rocker bar and the electrically conductive bridge to rock in a reverse direction to the above, thereby switching the on or off state of the circuit.

The electrically conductive bridge is connected to the elastic member to drive the actuator, which causes the elastic member to generate a counter force on the electrically conductive bridge. The point of action of the counterforce is at a different position from the point of action at which the rocker bar drives the electrically conductive bridge to connect or disconnect the circuit, which can result in the generation of torque in the electrically bridge conductive during the action of the electrically conductive bridge, such that the surface of the electrically conductive bridge pressed by the movable contact tilts unstably with respect to the pressure surface of the fixed contact. As a result, it will generate pulsating disruptive distances between the moving and stationary contacts during the closing or opening process of the moving contact and the stationary contact, thereby generating an arc discharge between the disruptive distances and further eroding and damaging the contacts. This will significantly reduce the resistance of the moving and stationary contacts, thus further reducing the life of the pushbutton switch. Meanwhile, the counterforce acting on the electrically conductive bridge will also affect the stable and reliable fast opening or closing operations of the electrically conductive bridge with the stationary contact, as well as the performance of the switch. Furthermore, the above arranged elastic member must pass through the rocker bar to connect the actuator and the electrically conductive bridge, which not only complicates the assembly of the elastic member, but also causes a lower mechanical strength of the rocker bar due to opening. Furthermore, the elastic member connected to the electrically conductive bridge will also make the assembly of the electrically conductive bridge more difficult. Finally, because the elastic element is directly connected to the electrically conductive bridge and the elastic element is usually made of metallic material, the elastic element is also loaded, which makes the loaded parts present in most of the space in pushbutton switch. This increases the risk of shock between neighboring parts and may result in parts damage and an electric shock accident for people who contact the push button.

Document CN 203055755 U discloses a pushbutton switch according to the preamble of claim 1, in which a fork rotates about an axis between two positions. It supports an actuator driven by a flexible member that extends in a direction that crosses the direction of the shaft.

Summary

The object of the invention is to provide a pushbutton switch with greater operational reliability.

This object is achieved by the features of claim 1.

A pushbutton switch is provided comprising the features of claim 1. It comprises a rocker bar supported on a base and having a first side and a second side opposite each other; an actuator connected to the first side of the rocker bar and which is rotatable between a first limiting position and a second limiting position; an electrically conductive bridge having a movable contact and bendably coupled to the second side of the rocker bar; an elastic element coupled between the actuator and the base and operably connectable with the rocker bar; and a push button, configured to depress the actuator in one of the first limiting position and the second limiting position while pushing, to actuate the actuator and the rocker bar to move about a rocker axis, such that the rocker bar drive the electrically conductive bridge to bend, causing the moving contact to contact or disconnect a fixed contact. The elastic element is configured so that the rocker bar deforms elastically when the pushbutton is pressed to cause the rotation of the rocker bar, while when it is Releasing the push button, the elastically deforming elastic element causes the actuator to rotate from one of the first limiting position and the second limiting position to the other of the first limiting position and the second limiting position.

The rocker bar has a first end and a second end in the direction of the rocker axis, the actuator is connected to the rocker bar at the first end of the rocker bar, and the elastic member extends between the first and second ends of the bar rocker on the first side of the rocker bar.

In one embodiment, a first end of the elastic member is operably connected to the actuator, and a second end of the elastic member opposite the first end is pivotally connected to the base, the rocker bar has a connecting piece on the first side, which it is operably connected to the elastic element at a position between two ends of the elastic element.

In one embodiment, the connecting piece is a movable yoke, which holds the elastic element in a position between two ends of the elastic element.

In one embodiment, a length of the elastic element from a connection position with the connection piece to a connection position with the actuator is greater than a length of the elastic element from a connection position with the connection piece to a connection position. pivoting with the base.

In one embodiment, a first end of the elastic member is movably connected to the actuator, and a second end of the elastic member opposite the first end is flexibly connected to the base, the elastic member being pivotally connected, in a position between its two ends, on the first side of the rocker bar.

In one embodiment, the base comprises a stop groove in the vicinity of the second end of the rocker bar, and the second end of the elastic element extends into the stop groove, such that when the rocker bar urges the elastic element to tilting, the stop groove at least partially restricts the second end of the elastic element to move together with the rocker bar, and the stop groove allows the second end of the elastic element, while releasing the push button, to rotate relative to the bar swingarm. In one embodiment, a length of the elastic element from a position of pivotal connection with the rocker bar to a position of connection with the actuator is greater than a length of the elastic element from a position of pivotal connection with the rocker bar to a position of connection. flexible with the base.

In one embodiment, the actuator comprises a actuating hole or actuating slot, and a first end of the elastic member extends into the actuating port or actuating slot to connect with the actuator.

In one embodiment, the elastic member is a coil spring, torsion spring, leaf spring, or elastic wire.

In one embodiment, the actuator is provided with two actuator blocks on two sides of the rocker shaft, the actuator being configured in such a way that when it is in the first limiting position and in the second limiting position, the button, when depressed, presses a Different actuator block on the two actuator blocks to make the rocker bar swing in different directions.

In the pushbutton switch, according to the embodiments of the present invention, the axis of rotation of the actuator is perpendicular to the axis of rotation of the rocker bar, so that the rotation of the actuator and the rotation of the rocker bar do not interfere with each other, thereby increasing the reliability of pushbutton switch operations, reducing the manufacturing precision requirement of pushbutton switch parts, and reducing the influence of wear on the normal operation of the pushbutton switch.

The pushbutton switch, according to embodiments of the present invention, actuates the elastic element to be loaded by the rocker bar so that the actuator is reset, so that the load of the elastic element does not affect the stability of the contact or the separation between the moving and stationary contacts of the pushbutton switch, thus improving the stability and reliability of the contact actions and prolonging the service life of the contacts.

In the pushbutton switch, according to the embodiments of the present invention, the elastic member is located on one side of the rocker bar and the rocker axis of the elastic member is perpendicular to the rocker axis of the rocker bar, so that the switch mounting The push-button operation is simplified and the elastic resetting action of the elastic element will not influence the current coupling state of the moving and stationary contacts. In addition, it also makes the elastic element unloaded, which makes the pushbutton switch more secure.

Brief description of the drawings

When the following detailed description of the examined embodiments is reviewed with reference to the drawings, these and other objects, features and advantages will become apparent. In the drawings:

Fig. 1 is an exploded view of a push button according to a first embodiment of the present disclosure;

Fig. 2 is an enlarged view of the rocker bar of the pushbutton switch of Fig. 1;

Fig. 3 is an enlarged view of the elastic element of the pushbutton switch of Fig.1;

Fig. 4 illustrates a pushbutton switch of Fig. 1 in the first state;

Fig. 5 illustrates a pushbutton switch of Fig. 1 in the second state;

Fig. 6 illustrates a pushbutton switch of Fig. 1 in the third state;

Fig. 7 illustrates a pushbutton switch according to a second embodiment of the present disclosure in the first state;

Fig. 8 illustrates a pushbutton switch according to a second embodiment of the present disclosure in the second state;

Fig. 9 illustrates a pushbutton switch according to a second embodiment of the present disclosure in the third state.

Detailed description of the realizations

Various embodiments of the present invention are now described in detail by way of example only.

With reference to Fig. 1, illustrates a pushbutton switch 100 according to the first embodiment of the present invention, wherein the pushbutton switch 100 comprises a base 4, which houses: a rocker bar 1 rocker-supported on the base 4; an actuator 2 connected to a first side of the rocker bar 1 and which is rotatable between a first limiting position and a second limiting position; an electrically conductive bridge 3 having a movable contact 31 and curved coupled to a second side of the rocker bar 1; an elastic element (shown as a torsion spring 5 in Fig. 1) coupled between actuator 2 and base 4 and operably connected to rocker bar 1; and a push button 6 to be pushed by a user to depress actuator 2, thus urging rocker bar 1 to act and further driving electrically conductive bridge 3 to act. Furthermore, the base 4 also houses a pushbutton spring 64 for resetting the pushbutton 6, a retention spring 9 to hold the electrically conductive bridge 3 and the rocker bar 1 in an operating position, and a stationary contact 7 and others. common structures on the switch. Furthermore, the pushbutton switch 100 may also comprise housing parts, such as a top cover 81, a housing 82, a pushbutton cover 83 and the like, for encapsulating the base 4 of the pushbutton switch 100 and various parts therein.

Figure 2 shows the structure of the rocker bar 1 in detail. The rocker bar 1 is generally in the form of a plate and has a first side 11 and a second side 12 opposite each other. The swing bar 1 is provided with an axis of rotation thereon, which is swingably supported on the base 4. The swing bar 1 forms a first end 13 and a second end 14 opposite each other along the direction of an axis. (i.e., the axis of rotation) of the axis of rotation 15. At the first end a hole 16 or a shaft is provided to pivotally support the actuator 2 on the first side 11 of the rocker plate 1, and at the first end is provided furthermore it has a limiting block 17 to restrict an extreme rotational position of the actuator 2. At the second end of the first side 11 of the rocker bar 1 a mounting shaft 18 is provided for pivotally mounting the elastic element on the mounting shaft 18. The elastic element can be, for example, a torsion spring 5 as shown in Fig. 3. The torsion spring 5 includes a coil piece 51 and a first arm 52 and a second arm 53 located on two opposite sides of the spiral piece 51, wherein the second arm 53 is shorter than the first arm 52. The spiral part 51 of the torsion spring 5 is fitted to the mounting shaft 18 of the rocker bar 1, such that the torsion spring 5 is pivotally supported on the first side of the rocker bar 1.

The spiral piece 51 of the torsion spring 5 can have a sufficient height, and at the bottom of the mounting shaft 18 a support surface 181 that rises from the first side 11 of the rocker bar 1 can be provided to support the spring. torsion spring 5, so that when the torsion spring 5 is mounted on the mounting shaft 18, the second arm 53 of the torsion spring 5 moves away from the swing axis of the swing bar 1 by a distance. As a result, when the torsion spring 5 rotates around the swing axis together with the swing bar 1, the end of the second arm 53 of the torsion spring 5 can generate a sufficient swing arc length, thereby which is advantageous for the elastic element to drive the actuator 2 to act. This will be illustrated in detail in the following text.

Advantageously, the mounting axis 18 is generally located on the tilting axis of the tilting bar 1, so that the elastic element 5 pivotally mounted thereon can be tilted to a symmetrical position on two sides of the tilting axis together with the rotation of the rocker bar 1 on both sides of the rocker axle.

The second side 12 of the rocker bar 1 is provided with a rocker arm 19 having a blind hole at the end, in which a retaining spring is mounted 9. The electrically conductive bridge 3 is connected with the retaining spring 9. The openings 191 are arranged on two sides of the blind hole of the rocker arm 19, such that when the electrically conductive bridge 3 is coupled to the end of the rocker arm 19 through the retaining spring 9, the electrically conductive bridge 3 can be bent relative to the swing arm 19 without interference by the swing arm 19.

The electrically conductive bridge 3 is made of electrically conductive material, such as copper. The lower part of the electrically conductive bridge 3 extends along a straight line and is supported by an actuator at the base 4, so that it bends relative to the actuator while forming an electrical connection therewith. The movable contact 31 of the electrically conductive bridge 3 can be formed on the two opposite sides of the electrically conductive bridge 3 or on one side only, to electrically contact the two stationary contacts 7 or a single stationary contact 7 of the pushbutton switch 100, respectively.

With reference to Figs. 1 and 4, the top cover 81 for enclosing the pushbutton switch 100 is removed in Fig. 4 to better reveal its internal structure. A first end (that is, the first arm 52 of the torsion spring 5) of the elastic element 5 (specifically the torsion spring 5 in the example) is conductively connected to the actuator 2. Specifically, the actuator 2 comprises a hole drive slot or a drive slot 23, and the first arm 52 of the torsion spring 5 extends into the drive hole or drive slot 23, so that the first arm 52 can rotate through a certain angle in the drive hole. drive or drive slot 23 relative to actuator 2. Meanwhile, by pressing against the side walls of hole or drive slot 23, the first arm 52 urges actuator 2 to pivot relative to rocker bar 1, thus establishing a drive connection with the actuator 2. It should be understood that the first end of the elastic element 5 can also establish the drive connection with the actuator 2 of other ways, since along the connection it allows a certain degree of relative rotation between the first end of the elastic element 5 and the actuator 2.

A second end (specifically the second arm 53 of the torsion spring 5 in the example) of the elastic element 5 opposite the first end is flexibly connected to the base 4. Specifically, a stop groove 41 is formed in the base 4 at a position adjacent to the second end 14 of the rocker bar 1, and the second arm 53 of the torsion spring 5 extends into the stop groove 41. The stop groove 41 can at least partially restrict the movement of the second arm 53 of the torsion spring 5 together with the rocker bar 1, and the stop groove 41 allows the second arm 53 of the torsion spring 5 to rotate within a range with respect to the rocker bar 1 and the base 4. To increase the range of rotation of the second arm 53 of the torsion spring 5, the stop groove 41 progressively widens in a direction distal to the rocker bar 1, to form a sector-shaped slot, for example, to prevent the stop groove 41 from restricting the end of second arm 53 during the rotation of the second arm 53 of the torsion spring 5. It should be appreciated that the second end of the elastic element 5 can also establish a flexible connection with the base 4 in other ways, provided that the connection at least partially restricts the movement of the second end of the elastic element 5 together with the rocker bar 1 and allows a certain degree of relative rotation between the second end of the elastic element 5 and the base 4. Consequently, the elastic element 5 is pivotally connected, in a position between its two ends, with the first side 11 of the rocker bar 1, and the elastic element 5 extends between the first end 13 and the second end 14 of the rocker bar 1 (that is, generally in the direction of the rocker axis of the rocker bar 1 ) on the first side of the rocker bar 1, so that the rotation axis of the elastic element 5 is perpendicular to the rocker axis of the rocker bar 1, and the Elastic element 5 will not pass through rocker bar 1 and will extend to second side 12 of rocker bar 1. Therefore, it is not necessary to form an opening in rocker bar 1 to allow elastic element 5 to pass through thereof, which increases the mechanical strength of the rocker bar 1, reduces the manufacturing complexity of the rocker bar 1 and improves the convenience of mounting the elastic element 5.

A pivotal connection point (that is, the position of the mounting shaft 18) between the elastic element 5 and the rocker bar 1 has a greater distance to the actuator 2 than the distance to the stop groove 41 of the base 4. Therefore Therefore, when the elastic element 5 is respectively connected to the actuator 2 and to the stop groove 41, a length of the elastic element 5 from the position of pivotal connection with the rocker bar 1 to the position of connection with the actuator 2 is greater than one length of the elastic element 5 from the position of pivotal connection with the rocker bar 1 to the position of flexible connection with the base 4, which is favorable to readjust the actuator 2 by the elastic element 5. This will be illustrated in detail in the following text.

The actuator 2 is provided with two actuator blocks 21 and 22 respectively located on two sides of the pivoting axis of the actuator 2. When the actuator 2 swings in the direction of a first limiting position in which the actuator 2 touches the limiting block 17 of the rod rocker 1, an actuator block 21 of actuator 2 is aligned with a pressure face 61 on one side of the push button 6, while the other actuator block 22 alternates to a pressure face 62 on the other side of the push button 6. When the actuator 2 is rotated in another direction of rotation to a second limiting position in which actuator 2 touches limiting block 17 of rocker bar 1, the other actuator block 22 of actuator 2 is aligned with a pressing face on the other side of the pushbutton 6, while actuator block 21 alternates to the pressing face 61 on one side of pushbutton 6. Consequently, the two pressure faces 61 and 62 of pushbutton 6 are not aligned simultaneously with the two actuator blocks 21 and 22 in both the first limiting position and the second limiting position of the actuator block. Thus, the pushbutton 6 can only apply torque to the actuator 2 from one side of the rocker axis of the rocker bar 1 at any time, which is crucial for a smooth curvature of the rocker bar 1 and the switching functionality of the switch. pushbutton 100. This will be illustrated in detail in the following text.

The operating process of the pushbutton switch 100 will be illustrated below with reference to Figs. 4 6. As shown in Fig. 4, in the initial state, before the pushbutton 6 is pressed, the pushbutton 6 is supported by a pushbutton spring 64 (not shown in Fig. 4), thus so that the pressure faces 61, 62 do not come into contact with any actuator block 21, 22 of the actuator 2, or a pressure face 61 only contacts an actuator block 22 without applying force on the actuator block 22. In this At the moment, the rocker bar 1 is in a state tilted to the left. In this position, the electrically conductive bridge 3 also tilts to one side, such that the movable contact 31 thereof also tilts to the side to electrically contact or disconnect from the fixed contact 7.

In the state of Fig. 4, the actuator 2 is unrestricted and is driven by the pushbutton 6. Instead, it only presses the limiting block 17 receiving a slight elastic restoring force from the elastic element 5, thus it is in the second limiting position, or it is free from the elastic restoring force of the elastic element 5 and is just in the position defined by the limiting block 17 and the first arm 52 of the elastic element 5. At this moment, the actuator block 21 alternates to the pressure face 61 on the push button 6 and the other actuator block 22 is aligned with the other pressure face 62.

According to Fig. 5, when the button 6 is pressed against the spring force of the spring of the button 64, the pressure face 62 on the right side of the button 6 first contacts the actuator block 22 which is raised and aligned with the pressure face. 62 due to the left tilt of the rocker bar 1. The action of continuing to press the button 6 down will exert a downward pressure on the actuator 2 as well as on the rocker bar 1 through the actuator block 22. The point of action of the pressure, that is, the position of the actuator block 22, is on the right side of the rocker axis of the rocker bar 1. Therefore, the pressure applies a clockwise torque to the rocker bar 1 , in such a way that the rocker bar 1 and the actuator 2 rotate together around the rocker axis to the right. A swing arm 19 on the second side 12 of the swing bar 1 will drive, during the swing process, the electrically conductive bridge 3 to swing to the other side, in such a way that the movable contact 31 of the electrically conductive bridge 3 changes its position (change to disconnect or connect) with respect to the stationary contact 7, whereby the on-off state of the pushbutton switch 100 is toggled.

During this process, the actuator 2 cannot pivot with respect to the rocker bar 1 because the actuator 2 is pressed by the pushbutton 6 on the actuator block 22. Therefore, one of the ends of the elastic element 5 connected to the actuator 2 ( that is, the end of the first arm 52 of the torsion spring 5) remains unchanged with respect to the position of the actuator 2 and the rocker bar 1, and rotates to the right in the same range as the actuator 2 and the rocker bar 1. Because the connection point between the elastic element and the actuator 2 and the pivotal connection point between the elastic element and the rocker bar 1 are fixed with respect to the rocker bar 1, the elastic element 5 cannot rotate about the axis. mounting 18 relative to the rocker bar 1 at this time. One end of the elastic element 5 connected to the stop groove 41 (that is, the end of the second arm 53 of the torsion spring 5), after swinging together with the rocker bar 1 to the right by a certain reach, will be blocked by the side wall on the right side of the stop groove 41 and will no longer be able to swing to the right. In this way, the two ends of the elastic element 5 have a relative displacement between them, whereby the elastic element 5 is forced to elastically deform under the force that presses the button 6.

As shown in Fig. 6, when the pusher 6 is released from a pressing state, the pusher 6 is moved up to its natural state by the action of the spring restoring force of the pusher 64, in such a way that the pressure face 62 is out of contact with the actuator block 22. Since the actuator 2 is no longer pressed by the pusher 6, the elastic restoring force acting on the actuator 2 by the elastic element 5, which has been deformed elastically during the previous tilting process of the rocker bar 1, it generates a torque in the actuator 2, which causes it to rotate counterclockwise with respect to the rocker bar 1, in such a way that the actuator 2 rotates until the first limiting position in which the actuator 2 touches the limiting block 17 from another tilting direction. At that time, the actuator block 22 alternates to the pressure face 62 of the button 6 and the actuator block 21 aligns with the pressure face 61, to be ready for the next time that the pressure face 61 of the button 6 presses another actuator block 21 of the actuator 2 to rotate the rocker bar 1 in the opposite direction. During the process of urging the actuator to pivot, the elastic element 5 by itself also rotates clockwise about the mounting axis 18 while releasing the elastic restoring force. That is, the end of the second arm 53 of the torsion spring 5 is pushed by the counter force applied by the right side wall of the stop groove 41 so that it rotates to the left of the stop groove 41, while the first arm 52 of the torsion spring 5 rotates clockwise to urge the actuator 2 to pivot, until the actuator 2 rotates towards the limiting block 17. At this time, the elastic deformation of the elastic element 5 is generally restored.

Since the space of the pushbutton switch 100 is limited, the distance from the second arm 53 of the torsion spring 5 to the rocker axis of the rocker bar 1 is extremely small. Therefore, when swinging the rocker bar 1, the second arm 53 of the torsion spring 5, even without the restriction of the stop groove 41, can only swing a limited distance of arc length around the rocker axis of the rocker bar 1. By arranging a length of the elastic element 5 from the position of pivotal connection with the rocker bar 1 to the position of connection with the actuator 2 greater than a length of the elastic element 5 from the pivot position with the rocker bar 1 to the position of flexible connection with the base 4, the pivoting of the second arm 53 of the elastic element 5 around the mounting axis 18 in a small range with respect to the rocker bar 1 during the restoration of the elastic deformation results in a greater range of length swing arc for the end of the first longer arm 52. Consequently, the actuator 2 can be driven to pivot over a relatively greater range, to achieve start another limiting position without problems.

When the button 6 is pressed again, the pressure face 61 of the button 6 will contact and press the actuator block 21, so that the actuator 2 as well as the rocker bar 1 are bent around the rocker axis to the left. The rocker arm 19 on the second side of the rocker bar 1 will drive the electrically conductive bridge 3 to again alter the direction of curvature, in such a way that the movable contact 3 of the electrically conductive bridge 3 changes again the position relative to the stationary contact 7, thus implementing the change again. Similar to the process described above in Figs. 5-6, the elastic element 5 continues to be elastically deformed in the process of tilting the rocker bar 1, and urges the actuator block 2 to rotate when the push-button 6 is released again. However, the movement of the first arm 53 of the element The elastic 5 is this time restricted by the left side wall of the stop groove 41, which generates an elastic deformation and an elastic restoring force in the first arm 53 in a reverse direction to that described above. Furthermore, when the pushbutton 6 is released, the elastic element 5 will apply a clockwise torque to the actuator block 2 again to rotate the actuator block 2 to the second limiting position, as shown in Fig. 4 , so that actuator block 22 is re-aligned with pressure face 62, thus being ready for the next pushbutton operation.

Accordingly, each time the pushbutton 6 is pressed, the electrically conductive bridge 3 bends under the actuation of the rocker bar 1, but the direction of curvature will alternately change according to the push sequence of the pushbutton 6, so that it is connected and alternately turn off the pushbutton switch 100. Meanwhile, the elastic element 5 is actuated by the rocker bar 1 to generate an elastic deformation each time, thus accumulating energy. Each time the button 6 is released, the actuator 2 is driven by the elastic element 5 from one of the current first limiting position and the second limiting position to the other of the first limiting position and the second limiting position, to be ready to actuate the electrically conductive bridge 3 in the reverse direction when the push-button 6 is pressed next time.

Although the above embodiments describe the present invention taking the torsion spring 5 as an example of the elastic element, those skilled in the art can understand that other types of elastic elements can be used, including, but not exclusively, the coil spring, the leaf spring and the like. By pivotally mounting the various forms of elastic elements on the rocker bar 1 and causing the elastic element to elastically deform due to the restriction of a part of the base 4 (for example, the stop groove 41) while the rocker bar 1 is By oscillating, the elastic element can cause, by its elastic restoring force, the actuator 2 to rotate to another limiting position different from the current limiting position when the push-button 6 is released, so that the operating position of the actuator 2 is reached which required for the next push of button 6.

Figs. 7-9 illustrate a pushbutton switch 100 according to a second embodiment of the present invention. The pushbutton switch 100 according to a second embodiment of the present invention differs from the pushbutton switch 100 of the first embodiment shown in Figures 1-6 only in the different forms of coupling between the elastic element 5 and the rocker bar 1 and the base 4, so that the elastic element 5 is loaded differently.

As shown in Fig. 7, the pushbutton switch 100 according to a second embodiment of the present invention is explained by taking the coil spring 5 'as the elastic element. Unlike the first embodiment, the mounting shaft 18 of the rocker bar 1 is replaced by a transfer fork 10, which can also be on the rocker bar 1 and in the position of the mounting shaft 18 in the first embodiment. The stop groove 41 of the base 4 is replaced by a base fixing shaft 42, which may also be in the base 4 and in the position of the stop groove 41 in the first embodiment. One end of the coil spring 5 'is operably connected to the actuator 2 in the same way as the first embodiment, for example extending into the actuator hole 23 of actuator 2. A second end of the coil spring 5 'opposite the first is pivotally mounted on the fixing shaft of the base 42 of the base 4. Meanwhile, the transfer fork 10 on the rocker bar 1 holds a part of the coil spring 5 'between the first end and the second end. As in the first embodiment, a length of the coil spring 5 'from the position of connection with the transfer fork 10 to the position of connection with the actuator 2 is greater than a length of the coil spring 5' from the position connection with the transfer fork 10 to the position of pivotal connection with the base 4, in order to facilitate the actuation, by a small range of rocking arc length of the coil spring 5 ', the actuator 2 to pivot at an angle relatively larger to achieve the next expected limiting position. This will be described in the following text.

In Fig. 7, when pushbutton 6 has not yet been pressed, rocker bar 1 tilts to the right and causes electrically conductive bridge 3 (not shown in Fig. 7) to tilt to one side, so that the movable contact 31 of the electrically conductive bridge 3 is connected or disconnected from the fixed contact 7. At this moment, the actuator 2 is in the first limiting position, in which the actuator block 21 is aligned with the pressure face 61 of the pushbutton 6, while the other actuator block 22 alternates to the other pressure face 62.

As shown in Fig. 8, when pushbutton 6 is depressed, pressure face 61 of pushbutton 6 presses actuator block 21 of actuator 2, such that actuator 2 and rocker bar 11 together rotate around the axis. tilting to the left to actuate the electrically conductive bridge 3 (not shown in Fig. 8) to bend to the other side, which causes a change of the position relationship (switch to disconnection or contact) between the moving contact 31 and the fixed contact 7. During this process, the actuator, which is pressed by the pushbutton 6, cannot rotate relative to the rocker bar 1, while the transfer fork 10 of the rocker bar 1 rotates to the left together with the rocker bar 1. Actuation of the transfer fork 10 will cause the part of the coil spring 5 'in contact with the transfer fork 10 to move to the left as well. Because the two ends of the coil spring 5 'are restrained respectively by the actuator 2 and the base fixing shaft 42, the coil spring 5' cannot move to the left along with the movement of the rocker bar 1 , causing an elastic curvature of the coil spring 5 'between its two ends.

As shown in Fig. 9, when the pusher 6 is released, the restriction on the actuator 2 by the pusher 6 is removed. The curved coil spring 5 'will drive, under the action of its elastic restoring force, the actuator 2 to rotate clockwise to reach the second limiting position, such that actuator block 22 aligns with pressure face 62 of pushbutton 6 and actuator block 21 alternates to pressure face 61 to be ready for the next operation. During this process, the coil spring 5 'tends to straighten from the curved state under the action of the elastic restoring force. Because the second end of the coil spring 5 'is secured by the base attachment shaft 42 and cannot move, the first end of the coil spring 5' is forced to rotate first around the point of contact between the spring. coil 5 'and transfer fork 10 to the left and causes actuator 2 to rotate until coil spring 5' is back in a straight line. Afterwards, the entire spiral spring 5 'can continue to rotate around the fixing axis of the base 42 to the left due to inertia, until the actuator 2 is pressed against the limiting block 17 of the rocker bar 1 and reaches the second position limiting. In this embodiment, because a length of the coil spring 5 'from the position of connection with the transfer fork 10 to the position of connection with the actuator 2 is greater than a length of the coil spring 5' from the position of connection with the transfer fork 10 to the pivotal connection position with the base 4, the first end of the coil spring 5 'can generate a displacement much greater than the displacement of a part of the coil spring 5' by the transfer fork 10 during the process of elastic readjustment of the bending state of the coil spring 5 ', so that it urges the actuator 2 to rotate through an angle large enough to reach the predetermined limiting position.

In a second embodiment, the transfer fork 10 acts as a connecting piece to operably join the transfer bar 1 with the elastic member, so as to urge the elastic member to deform by means of the rotation of the transfer bar 1. It should be understood that the transfer fork 10 can also be replaced by other forms of connecting piece, as long as the connecting piece can drive the elastic element to deform by means of the rocking of the rocker bar 1. For example, the bar swingarm 1 can be tied to a certain position between the two ends of the elastic element by means of a rope. Furthermore, in the second embodiment, the elastic member may also have other shapes, such as a leaf spring, an elastic wire, and the like.

In the above various embodiments, since the axis of rotation of the actuator 2 is perpendicular to the pivot axis of the rocker bar 1, the actuator 2 rotates in a different plane of curvature from the rocker bar 1. Consequently, the rotation of the actuator 2 and the deflection of the rocker bar 1 does not interfere with each other, ensuring that the rocker bar 1 can swing fully to an operating position where the electrically conductive bridge 3 contacts or is electrically disconnected from a respective contact each time and that the actuator 2 can rotate sufficiently to the limiting position that allows it to receive the pulsation of the button 6 in the reverse direction the next time. Thus, the pushbutton switch according to embodiments of The present invention provides reliable switching operations. Furthermore, since the motion paths of the actuator 2 and the rocker bar 1 are mutually independent and will not interfere, the requirement for the manufacturing precision of the actuator 2, rocker bar 1, and other related parts of the pushbutton switch 100 and the accuracy The multi-part assembly does not need to be very high to ensure reliable operation of the pushbutton switch 100. Furthermore, even if the parts of the pushbutton switch 100 wear out and deform after repeated use, the operations of the pushbutton switch 100 do not they will become unreliable or even fail due to decreased mounting accuracy.

In the various embodiments of the present invention, since the elastic element 5 is loaded by the actions of the rocker bar 1 instead of the electrically conductive bridge 3, the counterforce generated by the load of the elastic element 5 will not act on the electrically conductive bridge 3 Consequently, the electrically conductive bridge 3 will only be affected by the single motive force applied by the rocker bar 1, so that the electrically conductive bridge 3 will be operated more stably and reliably to perform a fast and orderly closing operation. or contact opening, and an unexpected torsion will not be generated in the electrically conductive bridge 3 due to the fact that it will be forced at multiple points, whose unexpected torsion will cause the contact closing or opening operations to bounce and also cause an arc discharge that damages the duration of the contact.

In the various embodiments according to the present invention, because the axis of rotation of the elastic element 5 with respect to the rocker bar 1 is perpendicular to the rocker axis of the rocker bar 1, that is, the elastic element 5 is on the first side 11 of the rocker bar 1 and generally rotates within a fairly small range of angles in the vicinity of the rocker axis of the rocker bar 1, the counter force generated when the elastic element 5 urges the actuator to rotate by the elastic restoring force and rotates the same relative to the rocker bar 1 will not apply significant torque to the rocker bar 1, which will generally not influence the current operating position of the rocker bar 1. This allows the moving and fixed contacts of the pushbutton switch 100 to remain stable in the current state when pushbutton 6 is released.

In the various embodiments according to the present invention, the elastic element as a whole is positioned on the first side of the rocker bar 1, away from contact, whereby it is not necessary to form an opening in the rocker bar 1 to allow the element elastic pass and extend to the other side of the rocker bar 1. Therefore, the assembly of the elastic element becomes easy and the mechanical strength of the rocker bar 1 increases. Furthermore, as the elastic element as a whole is away from the electrical elements (including the electrically conductive bridge 3, the stationary contact 7 and the like) on the other side of the swing bar 1 and does not come into direct contact with the electrical elements , the elastic member itself is not loaded, so that the elastic member will not generate an arc discharge with other non-electrical parts within the base of the pushbutton switch 100, thus increasing the safety of the pushbutton switch 100.

The electrically conductive bridge 3 of the pushbutton switch 100 of the various previous embodiments may comprise the movable contact 31 on only one side, to connect or disconnect a stationary contact 7 for each push of the pushbutton 6, thus connecting or disconnecting a circuit; or the electrically conductive bridge 3 of the pushbutton switch 100 may comprise the moving contacts 31 on both sides, to simultaneously contact a stationary contact 7 and disconnect a stationary contact for each push of the pushbutton 6, thus disconnecting or connecting another circuit while connecting or disconnect the circuit on one side.

It should be understood that the text describes the pushbutton switch 100 based on the orientations of its placement shown in the drawings for the purpose of ease of description. The "top, bottom, left, right" orientations in the text are represented based on position. It is clear that the pushbutton switch can be arranged in various orientations as required. The directional descriptions of "up, down, left, right" between each feature described in the text will vary accordingly along with changing the placement orientation of the pushbutton switch 100, but the relative positional relationship between each feature will not be changed. will alter.

Claims (10)

1. A pushbutton switch, comprising: a rocking bar (1) supported pivotally on a base (4) and having a first side (11) and a second side (12) opposite each other; an actuator (2) connected to the first side of the rocker bar (1) and being rotatable between a first limiting position and a second limiting position; an electrically conductive bridge (3) having a movable contact (31) and deflectorily coupled to the second side of the rocker bar (1); an elastic element (5, 5 ') coupled between the actuator (2) and the base (4) and operably connected to the rocker bar (1); Y a pushbutton (6), configured to press the actuator (2) in one of the first limiting position and in the second limiting position while being pushed, to actuate the actuator (2) and the rocker bar (1) to rotate around a tilting shaft, in such a way that the tilting bar (1) urges the electrically conductive bridge (3) to bend, which makes the moving contact contact or disconnect a fixed contact (7); wherein the elastic element (5, 5 ') is configured to be driven by the rocker bar (1) so that it is elastically deformed when the button (6) is pressed to cause the rocker bar (1) to tilt, while that when the button (6) is released, the elastic element (5, 5 ') that is elastically deformed drives the actuator (2) to rotate from one of the first limiting position and the second limiting position to the other of the first position limiting and the second limiting position, in which the rocker bar (1) has a first end (13) and a second end (14) in a direction of the rocker axis, characterized because The actuator (2) is connected to the rocker bar (1) at the first end of the rocker bar (1), and the elastic element (5, 5 ') extends between the first end (13) and the second end ( 14) of the rocker bar (1) on the first side (11) of the rocker bar (1). The pushbutton switch of claim 1, wherein a first end of the elastic member (5 ') is movably connected to the actuator (2), and a second end of the elastic member (5') opposite the first end is pivotally connected to the base (4), the rocker bar (1) has a connecting piece on the first side, which is movably connected to the elastic element (5 ') at a position between two ends of the elastic element (5'). The pushbutton switch of claim 2, wherein the connecting piece is a transfer fork (10), which holds the elastic element (5 ') in a position between two ends of the elastic element (5'). The pushbutton switch of claim 2, wherein a length of the elastic member (5 ') from a connection position with the connection piece to a connection position with the actuator (2) is greater than a length of the elastic element (5 ') from a position of connection with the connection piece to a position of pivotal connection with the base (4). The pushbutton switch of claim 1, wherein a first end of the elastic element (5) is movably connected to the actuator (2), and a second end of the elastic element (5) opposite the first end is connected flexibly with the base (4), the elastic element (5) being pivotally connected, in a position between its two ends, to the first side (11) of the rocker bar (1). The pushbutton switch of claim 5, wherein the base (4) comprises a stop groove (41) in the vicinity of a second end (14) of the rocker bar (1), and a second end of the elastic element (5) extends in the stop groove (41), so that when the tilting bar (1) actuates the elastic element (5) to be tilted, the stop groove (41) at least partially restricts the movement of the second end of the elastic element (5) in relation to the rocker bar (1), and the stop groove (41) allows the second end of the elastic element (5), when the button is released, to rotate in relation to the bar swingarm (1). The pushbutton switch of claim 5, wherein a length of the elastic element (5) from a position of pivotal connection with the rocker bar (1) to a position of connection with the actuator (2) is greater than one length of the elastic element (5) from a position of pivotal connection with the rocker bar (1) to a position of flexible connection with the base (4). The pushbutton switch of any one of claims 2 to 7, wherein the actuator (2) comprises an actuation hole (23) or an actuation slot, and a first end of the elastic element (5, 5 ') It extends into the actuator hole (23) or the actuator slot to connect with the actuator (2). The pushbutton switch of any of claims 1 to 7, wherein the elastic element (5, 5 ') is a coil spring, a torsion spring, a leaf spring or an elastic wire. The pushbutton switch of any of claims 1 to 7, wherein the actuator (2) is provided with two actuator blocks (21, 22) on two sides of the rocker shaft, the actuator (2) being configured as such so that when it is in the first limiting position and in the second limiting position, the pushbutton (6), when pressed, presses an actuator block different from the two actuator blocks (21, 22) to make the rocker bar (1) tilt in different directions.