CN115118799A

CN115118799A - Electronic equipment

Info

Publication number: CN115118799A
Application number: CN202110310115.0A
Authority: CN
Inventors: 杨铁亮; 丁俊; 寇大贺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2022-09-27

Abstract

The application provides an electronic device, including: the battery comprises a shell, a battery cover, a battery, a first electrode, a second electrode, a third electrode and a fourth electrode, wherein the shell comprises the battery cover, the battery is arranged in the shell, an inner cavity is formed in the shell, and a space area is formed between the battery cover and the battery; the loudspeaker is arranged in the shell and communicated with the inner cavity, and the inner cavity forms an equivalent rear sound cavity of the loudspeaker; and the sealing part comprises a sealing ring positioned in the space region, the ring opening of the sealing ring is over against the battery cover, and the battery cover is abutted against the battery through the sealing ring. The application provides an electronic equipment can effectively reduce because the open range of battery cover vibration that leads to in back sound chamber, promotes user's the experience of gripping.

Description

Electronic equipment

Technical Field

The application relates to the technical field of communication equipment, in particular to electronic equipment.

Background

A speaker is usually installed inside an electronic device such as a mobile phone to realize functions such as communication and sound playing. To improve the bass performance of the speaker, the back cavity of the speaker of the handset may be formed in an open or semi-open configuration. At this time, the front sound cavity and the back sound cavity of the speaker are isolated from each other by the sound generating unit (such as a diaphragm), and the back sound cavity of the speaker is communicated with the internal cavity of the mobile phone. The back sound cavity of the loudspeaker radiates sound waves to the inner cavity of the mobile phone under the action of vibration, and the battery cover vibrates due to the coupling of the sound and the battery cover of the mobile phone, so that the holding experience is influenced, and discomfort is caused to a user.

Disclosure of Invention

The application provides an electronic equipment can effectively reduce because the open range of battery cover vibration that leads to in back sound chamber, promotes user's the experience of gripping.

In a first aspect, an electronic device is provided, including: the battery comprises a shell, a battery cover, a battery, a first electrode, a second electrode, a third electrode and a fourth electrode, wherein the shell comprises the battery cover, the battery is arranged in the shell, an inner cavity is formed in the shell, and a space area is formed between the battery cover and the battery; the loudspeaker is arranged in the shell and communicated with the inner cavity, and the inner cavity forms an equivalent rear sound cavity of the loudspeaker; and the sealing part comprises a sealing ring positioned in the space region, the ring opening of the sealing ring is over against the battery cover, and the battery cover is abutted against the battery through the sealing ring.

That is to say, a packing ring is clamped between the battery and the battery cover, the packing ring is made of a material with excellent sound insulation (sealing) performance, the whole packing ring is of a closed annular structure, two sides of the packing ring are respectively and tightly attached to the battery and the battery cover, and the battery cover respectively block an annular opening on one corresponding side of the packing ring, so that the battery, the battery cover and the packing ring jointly define a cavity structure to form a cavity/battery cover coupling vibration suppression system. At the moment, the packing ring has a sound insulation effect, energy is greatly attenuated after being conducted to the inside of the cavity structure through the packing ring, and the packing ring can well block vibration (airflow or sound waves). And the packing ring can block air, so that the air in the cavity structure cannot be exchanged with the external air, when the battery cover vibrates, the air in the cavity structure is compressed, the air generates a rebound force on the battery cover, the battery cover is subjected to air pressure shock absorption, the vibration of the battery cover can be restrained, and the vibration amplitude of the battery cover can be reduced.

In addition, the packing ring is compressed after assembly, and the packing ring can provide certain pre-pressure to the battery cover, so that the rigidity of the battery cover can be improved, and the vibration of the battery cover can be further inhibited.

According to the electronic equipment provided by the embodiment of the application, the sealing and spacing ring is clamped between the battery and the battery cover, and two side surfaces of the sealing and spacing ring are tightly attached to the battery and the battery cover respectively, so that the battery, the battery cover and the sealing and spacing ring integrally form a cavity/battery cover coupling vibration suppression system, the vibration amplitude of the battery cover caused by the opening of the back sound cavity can be greatly reduced, and the holding experience of a user is improved.

At the moment, the back sound cavity of the loudspeaker is communicated with the inner cavity of the shell, the inner cavity comprises all gaps among all elements inside the mobile phone communicated with the back sound cavity of the loudspeaker, and the inner cavity forms an equivalent back sound cavity of the loudspeaker, so that the volume of the back sound cavity of the loudspeaker can be effectively improved, the low-frequency response of the loudspeaker can be improved by 8-10 dB, and the low-frequency performance of the loudspeaker is greatly improved. In addition, the loudspeaker adopts an open type rear sound cavity structure, so that the original rear sound cavity of 0.6-0.9 cc of the loudspeaker (namely a rear shell) can be eliminated, and a space can be provided for other parts.

It is worth mentioning that if no excluder ring is provided, the spatial region is also part of the inner cavity and will also constitute an equivalent back volume of the loudspeaker. In the present application, a packing ring is provided in the space region, the packing ring can separate sound, and the space inside the packing ring cannot form an equivalent rear sound cavity of the speaker, that is, the part surrounded by the packing ring in the space region cannot form an equivalent rear sound cavity of the speaker. However, the space between the battery cover and the battery occupies only a small portion of the entire inner cavity, and the packing ring may not completely enclose the entire space, and the influence of the packing ring on the volume of the entire equivalent rear sound cavity is not large and can be almost ignored. Consequently, this application can guarantee that the speaker has good sound production performance equally through setting up the packing ring.

Alternatively, the enclosure (i.e., the enclosure ring) may be fixedly disposed in the inner cavity between the battery and the battery cover by gluing, screwing, snapping, or simply abutting, etc.

In a possible design, the ring opening surrounds a first maximum amplitude region, where the maximum amplitude of the battery cover caused by the speaker is located when the isolating ring is not disposed in the electronic device.

This application forms a cavity through setting up the seal spacer ring, and this cavity surrounds the maximum amplitude region of battery cover (being that the maximum amplitude region is located the projection range of this cavity), this application surrounds first maximum amplitude region through setting up the seal spacer ring promptly, and not directly set up materials such as bubble cotton and fill in maximum amplitude regional position simply, can play the best suppression effect to the vibration of battery cover, can greatly reduced because the open range of battery cover vibration that leads to in back sound chamber, promote user's the experience of gripping.

In one possible design, the enclosure further includes a first parting strip located inside the enclosure ring and connected at both ends to the inner wall of the enclosure ring. This application can improve the support effect to the battery cover on the one hand through set up first parting bead in packing the spacer ring, and on the other hand also can improve the packing effect of cavity, can further reduce the range of the vibration of battery cover from this.

In a possible design, the first partition bar and a part of the seal ring form a closed ring structure, the closed ring structure surrounds a second maximum amplitude region, and the second maximum amplitude region is a region where the maximum amplitude of the battery cover caused by the speaker is located when the first partition bar is not arranged in the electronic device. With the above arrangement, the amplitude of vibration of the battery cover can be further reduced.

In one possible design, the enclosure further includes a second divider strip located inside the enclosure ring and connected at both ends to the inner wall of the enclosure ring.

In one possible design, the excluder ring is disposed around the edge of the cell. Therefore, a new maximum amplitude region can be ensured to be positioned in the seal ring as much as possible, and the vibration reduction effect is improved.

In one possible design, the enclosure is constructed of an elastomeric material. At this time, the sealing part is soft and flexible, so that the sealing part can provide certain damping when the battery cover vibrates, and plays a role in buffering and absorbing shock for the battery and the battery cover, thereby further reducing the amplitude of the battery cover and improving the holding experience of a user.

In one possible design, the compression ratio of the elastic material is 50% to 75%.

In one possible design, the enclosure is made of an elastic foam.

In one possible design, the width of the annular edge of the excluder ring is 2-4 mm.

In one possible design, the loudspeaker includes a rear housing, a rear sound cavity is formed in the rear housing, an opening is provided on the rear housing, and the rear sound cavity is communicated with the inner cavity through the opening.

Drawings

Fig. 1 is a schematic diagram of the mechanism of vibration of a battery cover caused by a loudspeaker with an open rear sound cavity during operation.

Fig. 2 is a schematic overall structure diagram of an electronic device provided in an embodiment of the present application.

Fig. 3 is a cross-sectional view from the AA in fig. 2.

Fig. 4 is an exploded view of an electronic device according to an embodiment of the present disclosure.

Fig. 5 is a back view of an electronic device according to an embodiment of the present application after uncovering.

Fig. 6 is a schematic view of the principle of damping the vibration of the cell cover by the packing ring.

Fig. 7 is a schematic diagram of a design process for reducing cell cover vibration amplitude through the enclosure.

Fig. 8 is a graph of the effect of the present application on the amplitude of the cell cover in comparison to the current prior art.

Reference numerals: 10. a housing; 11. a frame; 11a, a sound outlet; 12. a battery cover; 20. a display screen; 30. a speaker; 31. a sound emitting unit; 32. a front sound cavity; 33. a rear sound cavity; 34. a mounting structure; 40. a middle frame; 50. a battery; 60. an inner cavity; 61. a spatial region;

110. a housing; 111. a frame; 111a, sound outlet; 112. a battery cover; 120. a display screen; 130. a speaker; 131. a sound producing unit; 132. a front sound cavity; 133. a rear sound cavity; 134. a mounting structure; 140. a middle frame; 150. a battery; 160. an inner cavity; 161. a spatial region; 170. a functional element; 180. a sealing member; 181. a packing ring; 182. a first parting strip; 183. a second separator strip; a1, first amplitude region; at1, the first maximum amplitude region; a2, second amplitude region; at2, the second maximum amplitude region; a3, third amplitude region; at3, the third maximum amplitude region.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any indication of the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it is to be understood that the terms "upper", "lower", "side", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on installation, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the term "and/or" is only one kind of association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone.

It should be noted that, in the embodiments of the present application, the same reference numerals are used to refer to the same components or parts, and for the same parts in the embodiments of the present application, only one of the components or parts may be used as an example to refer to the reference numeral, and it should be understood that, for other similar components or parts, the reference numerals are also used.

With the continuous development of electronic devices, the structures of the components in the electronic devices are also changing. Taking a mobile phone as an example, a speaker is usually installed in the mobile phone to realize functions such as communication and sound playing. As mobile phones tend to be designed to be light and thin, the space inside the mobile phones becomes more and more compact, which requires the speaker to have the characteristics of miniaturization, light and thin.

A loudspeaker, also known as a "horn", is a commonly used electro-acoustic transducer device. The main working principle of the loudspeaker is that an electrified element is utilized to drive a vibrating diaphragm to generate mechanical vibration and push surrounding air, so that an air medium generates fluctuation, and the conversion of electricity, force and sound is realized.

Common speaker types include moving coil speakers (or dynamic speakers), moving iron speakers, combined coil and iron speakers, electromagnetic speakers, inductive speakers, electrostatic speakers, planar speakers, ribbon speakers, and horn speakers. Various speakers have been widely used in electronic devices such as mobile phones, notebook computers, tablet computers, electronic watches, etc. which need to generate sound.

The speaker generally includes a sound emitting unit, a front case, and a rear case. The sound generating unit serves as a core element of the speaker and is used for generating sound through vibration, and for example, the sound generating unit may be a diaphragm. The front shell and the rear shell are respectively positioned at two sides of the sound production unit, a front sound cavity (also called a front cavity) is formed in the front shell, and the front sound cavity is respectively communicated with the sound production unit and the sound production hole formed in the electronic equipment shell and is used for enabling sound of the loudspeaker to be transmitted to the outside through the front sound cavity. The rear shell is internally provided with a rear sound cavity (also called a rear cavity or a back cavity), the rear sound cavity is also communicated with the sound production unit, the rear sound cavity mainly influences the low-frequency part of sound and can improve the sound field and the loudness of the loudspeaker.

The speaker usually needs a larger volume of the sound cavity to obtain better audio effect, but it is difficult for the smart terminal such as a mobile phone to provide enough space for the audio device. For example, in order to ensure that the electronic device has a sufficiently good bass performance capability, the back cavity of the speaker should be set to be large enough, but limited by the architectural stack inside the electronic device such as a mobile phone, and for the micro speaker with the closed back cavity, the volume of the back cavity is generally controlled to be 0.6-0.9 cubic centimeters (cc). Due to the limitation of the volume, the poor low-frequency performance becomes a bottleneck restricting the tone quality of the loudspeaker, so that the electronic equipment cannot realize the stereo sound production effect, and the integral external sound quality of the electronic equipment is influenced.

In order to achieve a better audio effect in a limited architecture space, the internal cavity of the whole electronic equipment can be used as the volume of the sound cavity (equivalent back sound cavity) of an audio device by adopting an open or semi-open back sound cavity design, so that the volume of the back sound cavity of the loudspeaker can be obviously increased, and the expressive force of bass of the loudspeaker can be further improved. In this case, a relatively large opening may be provided in the rear housing of the loudspeaker, through which opening the rear sound chamber communicates with the interior of the electronic device, for example with the gap between the battery and the battery cover and with the gap between any other components.

For a mobile phone adopting an open type rear sound cavity, an inner cavity of the mobile phone (namely gaps among all parts in the mobile phone) can be fully utilized, an equivalent rear sound cavity of the micro speaker can reach 8-10 cc, compared with the traditional design that the volume of the rear sound cavity is 0.6-0.9 cc, the low-frequency response of the micro speaker can be improved by 8-10 dB, and the audio effect is greatly improved. Meanwhile, if the open type back cavity is adopted, the original rear sound cavity (namely the original rear shell) of 0.6-0.9 cc of the micro loudspeaker can be eliminated, and space is provided for other parts.

For the miniature loudspeaker with the open type rear sound cavity, sound waves can be radiated into the mobile phone at the same time when a sound production unit (such as a vibrating diaphragm) vibrates, and the battery cover vibrates due to the coupling of sound and the mobile phone battery cover, so that the holding experience is influenced, and discomfort is caused to a user.

Further, the larger the amplitude of the speaker, the more serious the problem of shell vibration. In order to improve the low-frequency performance of a micro speaker in electronic equipment such as a mobile phone, the amplitude of the speaker needs to be designed to be larger and larger, so that the risk of shell vibration is higher and higher. For example, the amplitude of the 12 × 16mm micro speaker may reach 0.6 millimeter (mm) or more, and when the micro speaker is applied to a mobile phone with an open rear cavity design, the amplitude of the battery cover of the mobile phone may reach 10 micrometers (μm) or more, so that a user can feel a relatively severe vibration when holding the mobile phone, which may affect the holding and normal operation of the user.

The reason why the micro speaker of the open type rear sound cavity causes the vibration of the battery cover of the mobile phone is further described with reference to the attached drawings. Fig. 1 is a schematic diagram of the mechanism of vibration of a battery cover caused by a loudspeaker with an open rear sound cavity during operation.

As shown in fig. 1, an electronic device (e.g., a mobile phone) includes a housing 10 and a display 20, wherein the display 20 covers the housing 10 to form an internal cavity for mounting functional elements. A middle frame 40 is arranged in the inner cavity, the housing 10 includes a frame 11 and a battery cover (also called a back cover) 12, a speaker 30 and a battery 50 are arranged between the middle frame 40 and the battery cover 12, an inner cavity 60 is formed in the housing 10, and the inner cavity 60 includes all gaps formed between various elements in the housing 10, for example, the inner cavity includes a space area 61 (gap) formed between the battery 50 and the battery cover 12. The speaker 30 includes a sound generating unit, a front housing and a rear housing, a front sound cavity 32 is formed in the front housing, and the front sound cavity 32 is communicated with a sound outlet hole 11a formed in the frame 11, so that the speaker 30 can generate sound to the outside. The rear housing forms a rear sound cavity 33, and the rear sound cavity 33 has an opening through which the rear sound cavity 33 communicates with an internal cavity of the electronic device, such as an internal cavity 60 (including a space region 61) in fig. 1. The speaker 30 is fixedly mounted inside the housing 10 by a mounting structure 34, for example, the speaker 30 is mounted on a small board of an electronic device, and the mounting structure 34 is a screw structure, a snap interface or a welding structure.

As shown in fig. 1, in this case, the rear sound cavity 33 of the speaker 30 is directly connected to the internal cavity 60 in the electronic device, and the internal cavity 60 including the space region 61 and the gaps between all the components in the electronic device that are in communication with the rear sound cavity 33 corresponds to an equivalent rear sound cavity of the speaker 30.

The speaker 30 is operated to cause vibration of the battery cover 12, mainly through three paths of sound wave transmission, air flow impact and structural vibration transmission. After the rear sound cavity 33 is opened, the battery cover 12 of the mobile phone is vibrated by the airflow and sound waves generated by the operation of the speaker 30, and the natural vibration generated by the operation of the speaker 30 can be transmitted to the battery cover 12 through the mounting structure 34. Among them, the speaker 30 radiates sound waves to the internal cavity of the electronic device to vibrate in coupling with the battery cover 12 (i.e., sound wave transmission) is the main way to cause the battery cover 12 to vibrate.

The dust screen is adhered to the opening (namely the air leakage hole) of the rear sound cavity of the micro-speaker, so that the air flow impact can be greatly reduced, and the vibration transmission can be effectively reduced by using buffer materials such as foam and the like. For sound wave transmission, sound waves emitted from the sound cavity behind the micro-speaker pass through the inner cavity of the mobile phone to reach the battery cover, and the battery cover is caused to vibrate. Although the case vibration caused by sound waves can be reduced to a certain extent by sticking the dust screen, if the sound waves are required to be greatly attenuated, the dust screen with high acoustic resistance is required to be used, but the effective volume of the internal space of the mobile phone actually used by the loudspeaker is reduced by the dust screen with high acoustic resistance. That is, there is currently no good solution for the main path of sound wave transmission, which causes the battery cover to vibrate, and how to control the vibration amplitude of the battery cover becomes a bottleneck problem for the application of the open type rear sound cavity speaker of the electronic device.

To above-mentioned problem, this application provides an electronic equipment, can effectively reduce because the open range of battery cover vibration that leads to in back sound chamber, promote user's the experience of gripping.

The electronic device may be a terminal device having a speaker, such as a mobile phone (e.g., a normal mobile phone or a foldable mobile phone), a tablet computer, a notebook computer, a smart watch, a Personal Digital Assistant (PDA), a point of sale (POS), and a vehicle-mounted computer, but is not limited thereto. For example, the electronic device may be a device that requires the user to hold it in his or her hand. In the embodiments of the present application, a mobile phone is taken as an example for description.

Fig. 2 is a schematic overall structure diagram of the electronic device 100 according to the embodiment of the present application. Fig. 3 is a cross-sectional view from the AA in fig. 2. Fig. 4 is an exploded view of an electronic device 100 according to an embodiment of the present disclosure. Fig. 5 is a back view of the electronic device 100 provided in the embodiments of the present application after being uncapped.

As shown in fig. 2 to 5, in the embodiment of the present application, the electronic device 100 is a mobile phone and includes a housing 110 and a display screen 120, and the display screen 120 is mounted on the housing 110. The electronic device 100 further includes electronic components disposed inside the housing 110, including, but not limited to, a circuit board, a processor, a camera, a flash, a microphone, a battery, and the like.

The housing 110 may be a metal housing, such as a metal of magnesium alloy, stainless steel, etc. In addition, the housing may be a plastic housing, a glass housing, a ceramic housing, or the like, but is not limited thereto. The housing 110 includes a frame 111 and a battery cover 112.

The display 120 serves as a front panel of the electronic device 100, and forms an accommodating space with the housing 110 for accommodating electronic components or functional components of the electronic device 100. The display screen 120 forms a display surface of the electronic device 100 for displaying information such as images, text, and the like. The display screen 120 may be a Light Emitting Diode (LED) display screen, a Liquid Crystal Display (LCD) display screen, or an organic light-emitting diode (OLED) display screen, but is not limited thereto. Further, the display screen 120 may also be a folding screen (flexible screen).

As shown in fig. 3 to fig. 5, an electronic device 100 provided in an embodiment of the present application includes: speaker 130, center frame 140, battery 150, and functional element 170.

The middle frame 130 and the battery 150 are sequentially stacked between the display screen 120 and the battery cover 112 of the electronic device 100. The functional element 170, the battery 150, and the speaker 130 are arranged in parallel, and the functional element 170 is located at the upper end of the battery 150 (i.e., the top end of the cellular phone) and the speaker 130 is located at the lower end of the battery 150 (i.e., the end of the cellular phone).

The functional element 170 includes various elements for realizing the functions of the electronic apparatus 100 itself, such as a motherboard and a camera, and for example, the functional element 170 further includes main circuits, chips, sensors, and interfaces and plug-ins of the electronic apparatus 100 provided on the motherboard.

Speaker 130 may be mounted on a small board located at the lower end of battery 150, which may also mount components such as a USB interface, antenna contacts, and radio frequency interface of electronic device 100.

The motherboard and the small board may be electrically connected through a Flexible Printed Circuit (FPC). The FPC may be located between the battery 150 and the bezel 140 (not shown in the figure).

The display 120 may be a flexible screen that can be bent, and at this time, in order to ensure that the whole electronic device 100 can be bent, at least a portion (for example, a middle portion) of the middle frame 140 is also made of a flexible material and can be bent.

As shown in fig. 3, the speaker 130 includes a sound emitting unit 131 (e.g., a diaphragm) and front and rear cases respectively located at opposite sides of the sound emitting unit 131. A front sound cavity 132 is formed in the front housing, the front sound cavity 132 is communicated with the sound outlet hole 111a formed in the frame 111, so that the airflow generated by the sound generating unit 131 can be conducted to the outside of the electronic device 100 through the front sound cavity 132 and the sound outlet hole 111a, and the speaker 30 can generate sound to the outside.

A rear sound cavity 133 is formed in the rear housing, and an opening is opened on the rear sound cavity 133, through which the rear sound cavity 133 is conducted with the inner cavity 160 of the electronic device. As shown in fig. 3, the housing 110 has an internal cavity 160 therein, the internal cavity 160 including gaps between all elements communicating with the rear sound cavity 133. A space region 161 is formed between the battery cover 112 and the battery 150, and the space region 161 may be understood as a gap between the battery 150 and the battery cover 112.

The airflow generated by the sound generating unit 131 can be conducted to the inner cavity 160 through the rear sound cavity 133 and the openings formed in the rear sound cavity 133, and at this time, the inner cavity 160 forms an equivalent rear sound cavity of the speaker 130. That is, interior chamber 160 is not part of the rear audio chamber of speaker 130.

It is worth mentioning that the gaps between all the elements inside the electronic device that communicate with the rear sound cavity 133 constitute an equivalent rear sound cavity of the speaker 130, that is, only a part of the inner cavity 160 is shown in fig. 3, but the volume of the equivalent rear sound cavity of the speaker 130 (i.e., the inner cavity 160) is far from being limited thereto.

For example, the volume of the back sound cavity 133 is 0.6-0.9 cc.

For another example, the volume of the inner cavity 160 (i.e., the entire equivalent rear sound cavity) is 8-10 cc.

At this time, the back cavity volume of the speaker 130 is the sum of the volumes of the back cavity 133 and the equivalent back cavity. That is to say, this application can effectively improve speaker 130's back of the body chamber volume through setting up open structure's back tone chamber 133 for speaker 130's low frequency response can promote 8 ~ 10dB, also has great promotion to speaker 130's low frequency performance.

Alternatively, in other embodiments, speaker 130 may not include a rear housing, that is, rear sound cavity 133 in fig. 3, in which case, inner cavity 160 constitutes the rear sound cavity (back cavity) of speaker 130, and the volume of the gap between all the components in the electronic device that are in communication with rear sound cavity 133 is the volume of the rear sound cavity of speaker 130, and speaker 130 does not need to be provided with a rear housing. Through the arrangement, the volume occupied by the loudspeaker 130 can be saved, and space is provided for arrangement of other components.

As shown in fig. 3, speaker 130 is mounted and secured within electronic device 100 via mounting structure 134, such as being secured to a small panel via mounting structure 134. The mounting structure 134 may be any one of a threaded structure, a snap-fit interface, or a welded structure, etc.

Alternatively, in other embodiments, the speaker 130 may include a plurality of speakers, and may be disposed adjacent to the same side of the electronic device 100, or may be disposed on different sides of the electronic device.

As shown in fig. 3 to 5, the electronic device 100 further includes a sealing member 180, the sealing member 180 includes a sealing ring 181 located in the space region 161, a ring opening of the sealing ring 181 faces the battery cover 112, and the battery cover 112 abuts against the battery 150 through the sealing ring 181.

That is, a packing ring 181 may be interposed between the battery 150 and the battery cover 112, the packing ring 181 being made of a material having excellent sound insulation performance, and having good sealing performance and a high sound insulation amount. The packing ring 181 is of a closed ring structure, two sides of the packing ring are respectively tightly attached to the battery 150 and the battery cover 112, and the battery 150 and the battery cover 112 respectively block a ring opening on one side of the packing ring 181, so that the battery 150, the battery cover 112 and the packing ring 181 jointly define a cavity structure to form a cavity/battery cover coupling vibration suppression system. At this time, the packing ring 181 has a sound insulation effect, energy is greatly attenuated after being conducted to the inside of the cavity structure through the packing ring 181, and the packing ring can play a good blocking effect on vibration (airflow or sound waves). In addition, the packing ring 181 can block air, so that air inside the cavity structure cannot be exchanged with outside air, and thus when the battery cover 112 vibrates, the air inside the cavity structure is compressed, and the air generates a rebound force on the battery cover 112, so as to perform "air pressure shock absorption" on the battery cover 112, and further suppress vibration of the battery cover 112, which is beneficial to reducing vibration amplitude of the battery cover 112.

In addition, the packing ring 181 is compressed after assembly, and the packing ring 181 can provide a certain pre-pressure to the battery cover 112, which can increase the rigidity of the battery cover, thereby further suppressing the vibration of the battery cover 112.

According to the electronic device provided by the embodiment of the application, the sealing ring 181 is clamped between the battery 150 and the battery cover 112, and two side surfaces of the sealing ring 181 are respectively and tightly attached to the battery 150 and the battery cover 112, so that the battery 150, the battery cover 112 and the sealing ring 181 integrally form a cavity/battery cover coupling vibration suppression system, the vibration amplitude of the battery cover 112 caused by the opening of a rear sound cavity can be greatly reduced, and the holding experience of a user is improved.

The packing ring 181 of the present application is disposed between the battery 150 and the battery cover 112, and due to the supporting effect of the battery cover 150, compared with the case where the packing ring 181 is disposed on another component, a gap is not easily generated on the connection surface of the packing ring 181, so that the sound insulation performance of the packing ring 181 is better.

At this time, the back sound cavity 133 of the speaker 130 is communicated with the inner cavity 160, the inner cavity 160 includes all gaps between the elements inside the mobile phone communicated with the back sound cavity 133 of the speaker 130, and the inner cavity 160 constitutes an equivalent back sound cavity of the speaker 130, so that the volume of the back sound cavity of the speaker 130 can be effectively increased, the low-frequency response of the speaker 130 can be improved by 8-10 dB, and the low-frequency performance of the speaker 130 is also greatly improved. In addition, since the speaker 130 of the present application adopts an open rear sound cavity structure, the original rear sound cavity of 0.6-0.9 cc of the speaker (i.e., the rear housing) can be eliminated, and a space can be provided for other components.

It is worth mentioning that if the excluder ring 181 is not provided, the spatial region 161 is also part of the inner cavity 160 and will also constitute an equivalent rear sound cavity of the speaker 130. In the embodiment of the present application, the packing ring 181 is disposed in the space region 161, the packing ring 181 can separate sound, and the space inside the packing ring 181 cannot constitute an equivalent rear sound cavity of the speaker 130, that is, the portion of the space region 161 surrounded by the packing ring 181 cannot constitute an equivalent rear sound cavity of the speaker 130. However, the space 161 between the battery cover 112 and the battery 150 occupies only a small portion of the entire internal cavity 160, and the packing ring 181 may not completely enclose the entire space 161, and the effect of the packing ring 181 on the volume of the entire equivalent rear sound cavity is not large and can be almost ignored. Therefore, the present application can also ensure that the speaker 130 has good sound production performance by providing the isolation ring 181.

Alternatively, the packing member 180 (i.e., the packing ring 181) may be fixedly disposed in the inner cavity 160 between the battery 150 and the battery cover 112 by gluing, screwing, clipping, or simply abutting.

Optionally, the enclosure 180 is constructed of an elastomeric material. At this time, the sealing member 180 is soft and flexible, so that the sealing member 180 can provide a certain damping when the battery cover 112 vibrates, and the battery cover 112 and the battery 150 are buffered and damped, thereby further reducing the amplitude of the battery cover 112 and improving the holding experience of the user.

Optionally, the elastic material has a compressibility of 50% to 75%. So that the battery cover 112 is cushioned as much as possible while the sound insulation performance is ensured. For example, the elastic material may be rubber (e.g., silicone), in which case, the packing ring 181 may be an elastic rubber ring.

Optionally, the width of the ring edge of the packing ring 181 is 2-4 mm. Through the arrangement, the packing ring 181 can be ensured to have sufficient sound insulation performance, and sufficient sound insulation can be achieved. For example, the width of the ring edge of the excluder ring 181 may be set to 2mm, 2.5mm, 3mm, 3.5mm or 4mm, etc., according to actual requirements.

In the embodiment of the application, the elastic material is elastic foam. The elastic foam can provide pre-pressure for the battery cover 112, improve the rigidity of the battery cover 112, and buffer the vibration of the battery cover 112. The greater the foam pre-compression, the lower the amplitude of the cell cover 112. However, the supporting reaction force of the foam should not be too large, and when the supporting reaction force of the foam exceeds a certain range, the battery cover 112 may bulge, which may affect the appearance and the feel, and may cause the risk of the battery cover 112 coming unstuck.

Furthermore, the foam has good sound insulation effect, and because the gap between the mobile phone battery and the battery cover is 0.5-1 mm, the sealing foam is compressed to the thickness (the thickness of the foam in a free state is larger than that of the gap, for example, 1.5mm), and the sealing foam can achieve the sound insulation of more than 25dB under a certain width (such as 2 mm). Through reasonable design, the high sound insulation performance of the foam is utilized to separate sound energy transmission to form a cavity/battery cover coupling vibration suppression system, and the vibration of the battery cover can be effectively reduced.

Optionally, the compression ratio of the foam is 50% to 75%, such as 50%, 55%, 60%, 75%, or the like.

Alternatively, the foam may be formed by foaming Polyurethane (PU), open-cell Polyethylene (PE), open-cell Ethylene Propylene Diene Monomer (EPDM), Expanded Polypropylene (EPE), or open-cell nitrile rubber (NBR) at a high temperature.

Fig. 6 is a schematic view of the principle of suppressing vibration of the battery cover 112 by the packing ring 181. As shown in part (a) of fig. 6, in the embodiment of the present application, the ring opening surrounds a first maximum amplitude region At1, and the first maximum amplitude region At1 is a region where the maximum amplitude of the battery cover 112 caused by the speaker 130 is located when the electronic device 100 is not provided with the isolating ring 181.

That is, when the electronic device 100 is assembled, when the entire electronic device 100 is about to be completely transferred and only the packing member 180 (i.e., the packing ring 181) remains to be assembled, the distribution of the vibration amplitude of the battery cover 112 when no foam is introduced may be obtained by calculation simulation or actual measurement, that is, the first amplitude region a1 of the battery cover 112 shown in part (a) in fig. 6 is determined, the amplitude of the first amplitude region a1 is greater than that of the other parts of the battery cover 112, the amplitude in the first amplitude region a1 is also different, and the deeper the gray region in part (a) in fig. 6 corresponds to a larger vibration amplitude, the deepest the color of the region corresponding to the first maximum amplitude region At1 is indicated as the maximum amplitude region of the battery cover 112.

The packing ring 181 (i.e., foam) distribution pattern as shown in part (b) of fig. 6 can be optimized by simulation or testing. At this time, while the packing ring 181 provides a supporting force for the battery cover 112, the formed cavity is also coupled with the battery cover to vibrate, so as to reduce the amplitude of the battery cover 112.

This application forms a cavity through setting up seal spacer ring 181, and this cavity surrounds battery cover 112's maximum amplitude region (being that the maximum amplitude region is located the projection range of this cavity), this application surrounds first maximum amplitude region At1 through setting up seal spacer ring 181 promptly, and not directly set up materials such as bubble cotton and simply fill in maximum amplitude regional position, can play the best suppression effect to battery cover 112's vibration, can greatly reduced because the open range of the battery cover 112 vibration that leads to in back sound chamber, promote user's the experience of gripping.

As shown in fig. 3-5, the enclosure 180 further includes a first parting strip 182, the first parting strip 182 being located inside the enclosure ring 181 and connected at both ends to the inner wall of the enclosure ring 181. By arranging the first separating strip 182 in the packing ring 181, the battery cover 112 can be supported, and the cavity can be sealed, so that the vibration amplitude of the battery cover 112 can be further reduced.

The first partition bar 182 may divide the partition ring 181 into a plurality of regions, the first partition bar 182 and a portion of the partition ring 181 form a closed ring structure, the closed ring structure surrounds a second maximum amplitude region At2, and the second maximum amplitude region At2 is a region where the maximum amplitude of the battery cover 112 caused by the speaker 130 is located when the first partition bar 182 is not disposed in the electronic device 100. With the above arrangement, the amplitude of the vibration of the battery cover 112 can be further reduced.

Fig. 7 is a schematic diagram of a design process for reducing the vibration amplitude of the battery cover 112 by the sealing member 180. As shown in fig. 7, after the electronic device 100 is provided with the packing ring 181, the number of amplitude regions of the battery cover 112 and the position of the maximum amplitude region may be changed. At this time, the amplitude distribution of the battery cover 112 is divided into two amplitude distribution regions (the second amplitude region a2 and the third amplitude region A3) from one larger distribution region (the first amplitude region a1), and each of the two new amplitude distribution regions corresponds to one own maximum amplitude region, i.e., the second maximum amplitude region At2 and the third maximum amplitude region At3, and At this time, the closed ring structure formed by the first partition bar 182 and a portion of the packing ring 181 may surround the second maximum amplitude region At2, whereby the amplitude of vibration of the battery cover 112 can be further reduced.

Further, At this time, the closed ring-shaped structure formed by the first partition bar 182 and the other portion of the packing ring 181 may surround the third maximum amplitude region At3, whereby the amplitude of the vibration of the battery cover 112 can be further reduced.

Optionally, since the position of the maximum vibration amplitude region of the battery cover 112 may be changed after the isolating ring 181 is disposed, in order to reduce the possibility that the maximum vibration amplitude region is located outside the isolating ring 181 (at this time, it is inconvenient to dispose the first separating bar 182, or simply disposing the first separating bar 182 in the isolating ring 181 would not be able to surround the maximum vibration amplitude region), in the embodiment of the present application, the isolating ring 181 may be disposed as large as possible, for example, the isolating ring 181 is disposed around the edge of the battery 150, so that it is possible to ensure that a new maximum vibration amplitude region is located inside the isolating ring 181 as much as possible, so as to improve the vibration reduction effect.

As shown in fig. 3-5, the enclosure 180 further includes a second dividing strip 183, the second dividing strip 183 being located inside the enclosure ring 181 and having both ends connected to the inner wall of the enclosure ring 181. In the present application, the second separating bar 183 is disposed in the packing ring 181, so that on one hand, the supporting effect on the battery cover 112 can be improved, and on the other hand, the packing effect of the cavity can also be improved, thereby further reducing the vibration amplitude of the battery cover 112.

The first and second separating strips 182 and 183 may or may not intersect, which is not limited in this application. For example, the two may be arranged in parallel.

Further, as shown in part (d) of fig. 7, the closed loop structure formed by the second separator bar 183 and a portion of the packing ring 181 may surround the third maximum amplitude region At3, whereby the amplitude of the vibration of the battery cover 112 can be further reduced.

By introducing the sealing foam with excellent sound insulation performance between the battery 150 and the battery cover 112 (the sealing foam ensures that the sound insulation capacity reaches more than 20dB after reaching the designed compression), the sound transmission path is blocked through the sound insulation effect, and a cavity/battery cover coupling vibration suppression system is formed at the maximum amplitude position, so that the vibration amplitude of the battery cover 112 can be effectively reduced.

The design process for reducing the vibration amplitude of the cell cover 112 by the sealing member 180 will be described with reference to fig. 7. As shown in fig. 7, the implementation is as follows:

step 1, firstly, by means of simulation or actual measurement, the vibration amplitude distribution of the battery cover 112 when no foam is introduced is obtained, as shown in part (a) of fig. 7, the amplitude distribution includes a first amplitude region a1 having a first maximum amplitude region At1 within a first amplitude region a 1. The maximum amplitude is about 12 um.

In step 2, the area of the cell cover 150 is as large as possible and a ring of foam (i.e., the packing ring 181) is used to enclose the first maximum amplitude area At1 calculated or measured in step 1. The foam may be disposed along the edges of the battery cover 150 as much as possible. The amplitude distribution of the cell cover 112 at this step can be obtained by simulation or actual measurement. As shown in part (b) of fig. 7, the amplitude distribution thereof is divided from one larger distribution region (first amplitude region a1) into two amplitude distribution regions (second amplitude region a2 and third amplitude region A3), and each of the two new amplitude distribution regions corresponds to one own maximum amplitude region, that is, the second maximum amplitude region At2 and the third maximum amplitude region At 3. The maximum amplitude of the battery cover 112 is greatly reduced to 6.5 um.

And 3, introducing the foam (namely the first separating strip 182) into the middle area of the foam to ensure that the cavity divided by the foam can surround the second maximum amplitude area At2 obtained in the step 2. By this step, as shown in part (c) of fig. 7, the amplitude of the second amplitude region a2 obtained in step 2 is further reduced to 3um or less.

And 4, introducing foamed plastic (namely the second separating strip 183) into the middle area of the foamed plastic, and ensuring that the cavity divided by the foamed plastic can surround the third maximum amplitude area At3 obtained in the step 3. By this step, as shown in part (d) of fig. 7, the amplitude of the third amplitude region a3 obtained in step 3 is further decreased.

Fig. 8 is a graph showing the effect of comparing the amplitude of the cell cover according to the present invention with that of the prior art. As can be seen from fig. 8, at different frequencies (especially low frequencies), the solution of the present application can greatly reduce the amplitude of the cell cover 112 compared to the prior art.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising:

the battery case comprises a case body (110), wherein the case body (110) comprises a battery cover (112), a battery (150) is arranged in the case body (110), an inner cavity (160) is arranged in the case body (110), and a space area (161) is arranged between the battery cover (112) and the battery (150);

the loudspeaker (130) is arranged in the shell (110) and communicated with the inner cavity (160), and the inner cavity (160) forms an equivalent rear sound cavity of the loudspeaker (130);

the sealing part (180) comprises a sealing ring (181) positioned in the space region (161), the ring opening of the sealing ring (181) is opposite to the battery cover (112), and the battery cover (112) is abutted to the battery (150) through the sealing ring (181).

2. The electronic device according to claim 1, characterized in that the collar encloses a first maximum amplitude region (At1), the first maximum amplitude region (At1) being the region where the maximum amplitude of the battery cover (112) caused by the speaker (130) is located when the electronic device is not provided with the excluder ring (181).

3. The electronic device according to claim 1 or 2, wherein the enclosure (180) further comprises a first separation strip (182), the first separation strip (182) being located inside the enclosure ring (181) and being connected at both ends to an inner wall of the enclosure ring (181).

4. The electronic device of claim 3, wherein the first division bar (182) and a portion of the excluder ring (181) form a closed loop structure that surrounds a second region of maximum amplitude (At2), the second region of maximum amplitude (At2) being a region of maximum amplitude of the battery cover (112) caused by the speaker (130) when the electronic device is not provided with the first division bar (182).

5. The electronic device according to claim 3 or 4, wherein the enclosure (180) further comprises a second separation bar (183), the second separation bar (183) being located inside the enclosure ring (181) and being connected at both ends to an inner wall of the enclosure ring (181).

6. The electronic device of any of claims 1-5, wherein the excluder ring (181) is disposed around an edge of the battery (150).

7. The electronic device of any of claims 1-6, wherein the enclosure (180) is comprised of an elastomeric material.

8. The electronic device of claim 7, wherein the compressibility of the elastic material is between 50% and 75%.

9. An electronic device according to claim 7 or 8, characterized in that the enclosure (180) is constituted by an elastic foam.

10. The electronic device of any of claims 1-9, wherein the width of the edge of the excluder ring (181) is 2-4 mm.

11. The electronic device of any of claims 1-10, wherein the speaker (130) comprises a rear housing having a rear sound chamber (133) formed therein, the rear housing having an opening therein, the rear sound chamber (133) being in communication with the interior chamber (160) through the opening.