CN220273857U - Sound producing device and electronic equipment - Google Patents

Abstract

The utility model discloses a sound generating device and electronic equipment, the sound generating device comprises a shell component, a vibration system and a waterproof and breathable film, the shell component is provided with a pressure relief channel, a first air hole and a second air hole, the second air hole is positioned on the outer side wall of the shell component, the vibration system comprises a vibrating diaphragm component, the outer periphery of the vibrating diaphragm component is connected with the shell component, the two opposite sides of the vibrating diaphragm component are respectively provided with a first space and a second space, the second space comprises an inner space positioned inside the sound generating device and an outer space positioned outside the sound generating device, the pressure relief channel is communicated with the first space through the first air hole, the pressure relief channel is communicated with the outer space through the second air hole, and the waterproof and breathable film is arranged on the outer side wall of the shell component and covers the second air hole. The utility model aims to provide the sound generating device which can realize waterproof pressure relief and does not influence the appearance, and the sound generating device is applied to electronic equipment, so that the acoustic performance of the sound generating device is effectively improved, and the waterproof performance of the sound generating device is improved.

Description

Sound producing device and electronic equipment

Technical Field

The present utility model relates to electroacoustic conversion technology, and in particular, to a sound generating device and an electronic device using the sound generating device.

Background

Along with the rapid development of technology, people have higher and higher requirements on the sound quality of electronic equipment, the requirements on the electronic equipment are not limited to the playing of video and audio, and higher requirements on the sound quality and reliability of the playing sound of the electronic equipment are further provided. Smartwatches are widely used as a relatively common portable electronic device.

Most intelligent wearable devices such as watches are required to have waterproof performance to ensure that sound emitting devices arranged in the intelligent watches work normally. The sound generating mechanism sets up in the casing of intelligent wrist-watch, in order to guarantee that sound generating mechanism is at the inside atmospheric pressure balance of intelligent wrist-watch, does not influence sound generating mechanism's sound production performance, in the correlation technique, most intelligent wrist-watch all requires to have waterproof performance, in order to keep the inside atmospheric pressure balance of intelligent wrist-watch, does not influence sound generating mechanism's sound production performance, sets up the atmospheric pressure balanced hole on the shell of intelligent wrist-watch generally, and attached waterproof ventilated membrane in atmospheric pressure balanced hole department, so set up not only makes the shell processing of intelligent wrist-watch comparatively complicated, also influences the outward appearance of shell.

Disclosure of Invention

The utility model aims to provide a sound generating device and electronic equipment, and aims to provide the sound generating device which can realize pressure relief and does not influence the appearance.

To achieve the above object, the present utility model provides a sound emitting device including:

the shell assembly is provided with a pressure relief channel, a first air hole and a second air hole, and the second air hole is positioned on the outer side wall of the shell assembly;

the vibration system comprises a vibrating diaphragm assembly, the outer periphery of the vibrating diaphragm assembly is connected with the shell assembly, a first space and a second space are respectively arranged on two opposite sides of the vibrating diaphragm assembly, the second space comprises an inner space positioned inside the sound generating device and an outer space positioned outside the sound generating device, the pressure release channel is communicated with the first space through the first air hole, and the pressure release channel is communicated with the outer space through the second air hole; a kind of electronic device with high-pressure air-conditioning system

The waterproof breathable film is arranged on the outer side wall of the shell assembly and covers the second air hole.

In an embodiment, the shell assembly includes well shell and backshell, one side of well shell with the backshell is connected, one side of keeping away from the backshell with the periphery of vibrating diaphragm assembly is connected, well shell is equipped with pressure release passageway, first gas pocket and second gas pocket, first gas pocket is located well shell deviates from one side of backshell, and is adjacent vibrating diaphragm assembly sets up, the second gas pocket is located the lateral wall of well shell.

In an embodiment, the middle shell comprises a main body part and a mounting part, the mounting part is connected to the periphery of the main body part and extends towards the rear shell, the outer periphery of the vibrating diaphragm assembly is connected with the inner side of the main body part, the rear shell is connected with one side, away from the vibrating diaphragm assembly, of the main body part and is abutted to the mounting part, the first air hole is formed in one side, facing away from the rear shell, of the main body part, the second air hole is formed in one side, facing away from the rear shell, of the mounting part, and the pressure relief channel extends from the main body part to the mounting part.

In an embodiment, a direction perpendicular to the vibration direction of the vibration system is defined as a thickness direction of the main body, and the first air hole is located at a middle position in the thickness direction of the main body;

and/or one side of the mounting part, which is away from the rear shell, is provided with an inclined surface, the second air hole is arranged on the inclined surface, and the inclined surface obliquely extends towards the direction close to or far away from the rear shell along the vibration direction of the vibration system.

In an embodiment, the pressure release channel includes a first extension section and a second extension section that are connected, the first extension section is far away from the one end of the second extension section and is communicated with the first air hole, and the first extension section extends along the vibration direction of the vibration system, the second extension section is far away from the one end of the first extension section and is communicated with the second air hole, and the extending direction of the second extension section and the extending direction of the first extension section are arranged in an included angle.

In an embodiment, along the vibration direction of the vibration system, the second extension section extends obliquely toward a direction away from the vibration system and is in communication with the second air hole.

In an embodiment, the housing assembly further includes a front shell, the front shell is disposed on a side of the middle shell away from the rear shell, the front shell and the diaphragm assembly cooperate to define the first space, the first space is a front acoustic cavity, and a mounting surface is formed on a side of the middle shell facing away from the rear shell;

the mounting surface is ultrasonically welded with the front shell; or the mounting surface is glued and sealed with the inner wall of the front shell.

In an embodiment, the outer peripheral wall of the front shell is further provided with a sealing ring, and the sealing ring is adhered to the front shell or integrally injection molded.

In an embodiment, the diaphragm assembly comprises a diaphragm and a vibrating plate, and the diaphragm, the vibrating plate and the middle shell are integrally injection molded.

In an embodiment, an adhesive layer is disposed between the waterproof breathable film and the outer wall of the housing assembly, and the adhesive layer includes a body and a ventilation hole disposed on the body, and the ventilation hole is disposed opposite to the waterproof breathable film.

In an embodiment, the pressure release channels include a plurality of pressure release channels, and the plurality of pressure release channels are distributed at intervals;

the waterproof breathable films are arranged in a one-to-one correspondence with the second air holes of the pressure relief channels; or, the waterproof breathable film is one, and the waterproof breathable film covers the second air holes of the pressure relief channels.

The utility model also provides electronic equipment comprising the sounding device.

According to the sound production device, the vibrating diaphragm assembly of the vibration system is fixedly arranged through the shell assembly, so that the outer periphery of the vibrating diaphragm assembly is connected with the shell assembly, the first space and the second space are respectively arranged on the two opposite sides of the vibrating diaphragm assembly, the second space comprises an inner space positioned in the sound production device and an outer space positioned outside the sound production device, the pressure release channel, the first air hole and the second air hole are arranged on the shell assembly, the second air hole is positioned on the outer side wall of the shell assembly, the pressure release channel and the first space are communicated through the first air hole, the second air hole is communicated with the pressure release channel and the outer space, partial air flow or air pressure of the first space is guided to the second space through the first air hole through the pressure release channel on the shell assembly, pressure release is achieved, the vibrating diaphragm assembly of the vibration system is prevented from being subjected to excessive pressure in a front sound cavity, amplitude and vibration quantity of the vibrating diaphragm assembly are affected, therefore acoustic performance of the sound production device can be effectively achieved, the pressure release effect can be achieved through the fact that the pressure release device is not required to be opened on the shell of the electronic equipment, the sound production device is convenient to operate, and appearance of the electronic equipment is not affected; meanwhile, the waterproof breathable film is arranged on the outer side wall of the shell assembly and completely covers the second air hole, so that the waterproof performance of the sound generating device can be improved. Moreover, the sound generating device has the waterproof and pressure-releasing functions, and the pressure release holes are not required to be formed in the shell of the electronic equipment, and the waterproof and air-permeable membrane is adhered to the shell of the electronic equipment, so that the electronic equipment has good appearance effect.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a schematic diagram illustrating a structure of a sound generating apparatus according to another embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating a structure of a middle case and a diaphragm assembly according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a connection between a middle shell and a diaphragm assembly according to another embodiment of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Sounding device	2	Vibration system
1	Housing assembly	21	Vibrating diaphragm assembly
				11	Front shell	211	Vibrating diaphragm
111	Sealing ring	212	Vibrating plate
				12	Middle shell	22	Voice coil
121	Pressure relief channel	23	Centering support piece
				1211	First air hole	3	Magnetic circuit system
1212	Second air hole	31	Magnetic gap
				1213	First extension section	32	Magnetic yoke
1214	Second extension section	33	Central magnetic circuit part
				122	Main body part	34	Side magnetic circuit part
123	Inclined surface	4	Anterior acoustic chamber
				124	Mounting surface	5	Waterproof breathable film
125	Mounting part	6	Adhesive layer
				13	Rear shell

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a sound generating device 100. It is understood that the sound generating apparatus 100 is applied to an electronic device, which may be a smart watch, a mobile phone, a sound device, a computer, an earphone, a television, or the like, and is not limited herein.

In this embodiment, a smart watch is taken as an example for explanation. It can be understood that by arranging the pressure release channel 121 on the sound generating device 100, when the sound generating device 100 is installed in an electronic device, the pressure release channel 121 can be used to keep the air pressure in the front acoustic cavity 4 and the rear cavity of the electronic device in a balanced state, so that the vibration amplitude of the vibration film is reduced by avoiding the expansion of the air in the rear cavity to squeeze the vibration film, the vibration quantity of the vibration film is ensured, and the acoustic performance of the sound generating device 100 is improved; meanwhile, by completely covering the second air holes 1212 with the waterproof breathable film 5, the waterproof performance of the sound emitting device 100 can be increased.

Referring to fig. 1 to 7, in the embodiment of the utility model, the sound generating device 100 includes a housing assembly 1, a vibration system 2 and a waterproof and breathable membrane 5, wherein the housing assembly 1 is provided with a pressure release channel 121, a first air hole 1211 and a second air hole 1212, the second air hole 1212 is located on an outer side wall of the housing assembly 1, the vibration system 2 includes a vibration membrane assembly 21, an outer periphery of the vibration membrane assembly 21 is connected with the housing assembly 1, two opposite sides of the vibration membrane assembly 21 are respectively provided with a first space and a second space, the second space includes an inner space located inside the sound generating device 100 and an outer space located outside the sound generating device 100, the pressure release channel 121 is communicated with the first space through the first air hole 1211, the pressure release channel 121 is communicated with the outer space through the second air hole 1212, and the waterproof and breathable membrane 5 is located on the outer side wall of the housing assembly 1 and covers the second air hole 1212.

In this embodiment, the housing assembly 1 of the sound generating device 100 is used for mounting, fixing and supporting the components such as the vibration system 2 and the waterproof and breathable membrane 5, that is, the housing assembly 1 provides a mounting base for the components such as the vibration system 2 and the waterproof and breathable membrane 5. It will be appreciated that the housing assembly 1 may be a unitary structure or may be formed by a plurality of separate structures, and is not limited herein.

It will be appreciated that the sound generating apparatus 100 is applied to an electronic device, that is, the sound generating apparatus 100 may be mounted to the electronic device through the housing assembly 1. It should be noted that, the housing assembly 1 of the sound generating apparatus 100 may be a housing or a box structure independent of the electronic device, and at this time, the vibration system 2, the waterproof and breathable film 5, and other components of the sound generating apparatus 100 are integrated into a whole structure by using the housing assembly 1, so as to facilitate disassembly and assembly. Of course, the housing assembly 1 of the sound generating apparatus 100 may be integrally formed with the housing or the case of the electronic device, so as to effectively improve the structural strength and sealing performance.

In this embodiment, the sound generating device 100 may be a sound generating unit structure, and the housing assembly 1 is used for accommodating and fixing the structures such as the vibration system 2 and the magnetic circuit system 3, so that the sound generating device 100 can be used as a separate component in an electronic device or a sound generating module, which is not limited herein. Of course, in other embodiments, the sound generating device 100 may be a module structure, and in this case, the structures such as the vibration system 2 and the magnetic circuit system 3 of the sound generating unit are respectively mounted as a plurality of independent components on the housing assembly 1 of the module structure, which is not limited herein.

It will be appreciated that the housing assembly 1 forms an installation space, so that the vibration system 2 and the magnetic circuit system 3 can be conveniently installed and fixed by using the installation space. In this embodiment, the outer periphery of the diaphragm assembly 21 is connected with the housing assembly 1, so that the opposite sides of the diaphragm assembly 21 have a first space and a second space respectively, the second space includes an inner space located inside the sound generating device 100 and an outer space located outside the sound generating device 100, and the magnetic circuit system 3 is connected to the housing assembly 1 and opposite to and spaced from the diaphragm assembly 21 to form a vibrating space in cooperation with the inner space located inside the sound generating device 100.

In order to keep the air pressure balance in the vibration space, the magnetic circuit system 3 or the shell component 1 or the magnetic circuit system 3 is matched with the shell component 1 to form an air leakage hole communicated with the vibration space. It can be understood that when the sound generating device 100 is installed in the housing or the box of the electronic device, the sound generating device 100 and the housing or the box of the electronic device enclose to form a rear cavity, and the rear cavity is an external space located outside the sound generating device 100, and at this time, the rear cavity is communicated with the vibration space of the sound generating device 100 through the air leakage hole. The rear chamber (i.e., the external space located outside the sound emitting device 100) and the vibration space (i.e., the internal space located inside the sound emitting device 100) form a second space at this time.

In this embodiment, the pressure release channel 121 and the first air hole 1211 and the second air hole 1212 which are communicated with the pressure release channel 121 are arranged in the shell assembly 1, the pressure release channel 121 and the first space are communicated by the first air hole 1211, the second air hole 1212 is communicated with the external space of the pressure release channel 121 and the second space, so that the sound production device 100 is arranged in the shell or the box of the electronic equipment, the second air hole 1212 can be communicated with the pressure release channel 121 and the rear cavity, at the moment, the air flow or the air pressure of the first space can be guided to the rear cavity (namely, the external space of the second space) through the pressure release channel 121, the pressure release channel 121 and the second air hole 1212 on the shell assembly 1, and then flows into the vibration space of the sound production device 100 through the air release hole of the sound production device 100, so that the air pressure at two sides of the diaphragm assembly 21 is balanced, and the air flow of the rear cavity can be communicated with the air flow of the first space by the aid of the pressure release channel 121 on the shell assembly 1, the additional vibration pressure release hole and other structures on the shell or the box of the electronic equipment are effectively avoided, and the amplitude and the sound production device 100 can be effectively ensured, and the sound production device 100 can effectively perform. Moreover, the above arrangement makes the sound generating apparatus 100 have a waterproof pressure relief function, and does not need to provide a pressure relief hole and attach a waterproof breathable film on the electronic equipment casing, so that the electronic equipment has a good appearance effect.

It can be appreciated that, in order to further improve the waterproof performance of the sound generating apparatus 100, the waterproof and breathable film 5 is disposed on the outer side wall of the housing assembly 1, so that the waterproof and breathable film 5 covers the second air holes 1212, and thus the waterproof function is realized while ventilation is realized by using the waterproof and breathable film 5. In the present embodiment, the waterproof and breathable film 5 may be a waterproof and breathable separator or the like, and is not limited thereto as long as it can achieve a breathable and waterproof function.

According to the sound production device 100, the vibrating diaphragm assembly 21 of the vibration system 2 is fixedly arranged through the shell assembly 1, so that the outer periphery of the vibrating diaphragm assembly 21 is connected with the shell assembly 1, a first space and a second space are respectively arranged on two opposite sides of the vibrating diaphragm assembly 21, the second space comprises an inner space positioned in the sound production device 100 and an outer space positioned outside the sound production device 100, the shell assembly 1 is provided with the pressure relief channel 121, the first air hole 1211 and the second air hole 1212, the second air hole 1212 is positioned on the outer side wall of the shell assembly 1, the pressure relief channel 121 is communicated with the first space by the aid of the first air hole 1211, the pressure relief channel 121 on the shell assembly 1 can be used for guiding partial air flow or air pressure of the first space to the second space, so that pressure relief is realized, the vibrating diaphragm assembly 21 of the vibration system 2 is prevented from being subjected to excessive pressure in a front sound cavity, the amplitude and the vibration quantity of the vibrating diaphragm assembly 21 are influenced, and the acoustic performance of the sound production device 100 can be effectively realized; meanwhile, the waterproof breathable film 5 is arranged on the outer side wall of the shell assembly 1 and completely covers the second air holes 1212, so that the waterproof performance of the sound generating device 100 can be improved.

In an embodiment, the housing assembly 1 includes a middle shell 12 and a rear shell 13, wherein one side of the middle shell 12 is connected with the rear shell 13, one side of the middle shell 12 away from the rear shell 13 is connected with the outer periphery of the diaphragm assembly 21, the middle shell 12 is provided with a pressure release channel 121, a first air hole 1211 and a second air hole 1212, the first air hole 1211 is located on one side of the middle shell 12 away from the rear shell 13 and is located adjacent to the diaphragm assembly 21, and the second air hole 1212 is located on the outer side wall of the middle shell 12.

In the present embodiment, as shown in fig. 1 to 7, by providing the housing assembly 1 as the middle case 12 and the rear case 13 such that the rear case 13 is connected to one side of the middle case 12, the housing assembly 1 is made to form an installation space, so that it is possible to conveniently install the fixed vibration system 2 and the magnetic circuit system 3 using the installation space. It will be appreciated that the outer periphery of the diaphragm assembly 21 is connected to the middle housing 12, and the magnetic circuit 3 is connected to the rear housing 13 opposite to and spaced apart from the diaphragm assembly 21 to cooperate to form a vibration space. In order to keep the air pressure balance in the vibration space, the magnetic circuit system 3 or the rear shell 13 or the magnetic circuit system 3 and the rear shell 13 are matched to form an air leakage hole communicated with the vibration space.

It can be understood that by providing the housing assembly 1 as a two-part structure of the middle case 12 and the rear case 13, the diaphragm assembly 21 can be mounted and fixed by using the middle case 12, and the magnetic circuit system 3 can be mounted and fixed by using the rear case 13, thereby improving the convenience of installation. In this embodiment, the pressure release channel 121 and the first air hole 1211 and the second air hole 1212 that are communicated with the pressure release channel 121 are provided in the middle shell 12, so that the pressure release channel 121 is conveniently utilized to communicate the first space and the second space on two opposite sides of the diaphragm assembly 21, thus effectively ensuring that the air pressures on two sides of the diaphragm assembly 21 are balanced, avoiding the additional arrangement of the pressure release hole and other structures on the casing or the box of the electronic device, and also ensuring the amplitude and the vibration quantity of the diaphragm assembly 21, thereby effectively improving the acoustic performance of the sound generating device 100.

In an embodiment, the middle shell 12 includes a main body 122 and a mounting portion 125, the mounting portion 125 is connected to a peripheral side of the main body 122 and extends toward the rear shell 13, an outer periphery of the diaphragm assembly 21 is connected to an inner side of the main body 122, the rear shell 13 is connected to a side of the main body 122 away from the diaphragm assembly 21 and abuts against the mounting portion 125, a first air hole 1211 is formed in a side of the main body 122 facing away from the rear shell 13, a second air hole 1212 is formed in a side of the mounting portion 125 facing away from the rear shell 13, and the pressure release channel 121 extends from the main body 122 to the mounting portion 125.

In the present embodiment, as shown in fig. 1 to 7, by providing the mounting portion 125 outside the main body portion 122 of the middle case 12, the mounting portion 125 extends toward the rear case 13 and abuts against the outside of the rear case 13, thereby facilitating the extending arrangement of the pressure release passage 121 and improving the structural strength of the middle case 12. It will be appreciated that the middle shell 12 may alternatively be a frame structure, i.e., the main body portion 122 and the rear shell 13 may be a frame structure having a space. The outer periphery of the diaphragm assembly 21 is connected with the inner side of the main body 122, so that the diaphragm assembly 21 is utilized to seal the frame opening at one end of the middle shell 12, the rear shell 13 is connected with one side of the main body 122 far away from the diaphragm assembly 21, and the frame opening at the other end of the middle shell 12 is sealed by the magnetic circuit system 3, so that the diaphragm assembly 21, the middle shell 12, the rear shell 13 and the magnetic circuit system 3 enclose to form a vibration space.

It can be appreciated that the first air hole 1211 is disposed on a side of the main body 122 facing away from the rear housing 13 and adjacent to the diaphragm assembly 21, the second air hole 1212 is disposed on a side of the mounting portion 125 facing away from the rear housing 13, that is, the second air hole 1212 is disposed on an outer side wall of the mounting portion 125, the pressure release channel 121 extends from the main body 122 to the mounting portion 125, and two ends of the pressure release channel 121 are respectively communicated with the first air hole 1211 and the second air hole 1212.

In an embodiment, a direction perpendicular to the vibration direction of the vibration system 2 is defined as the thickness direction of the main body 122, and the first air hole 1211 is located at a middle position in the thickness direction of the main body 122.

In this embodiment, as shown in fig. 1, 3, 4, 6 and 7, the inner side of the main body 122 of the middle shell 12 is connected to the diaphragm assembly 21, and the outer side of the mounting portion 125 and the outer wall forming the middle shell 12, that is, the second air hole 1212 is opened at the outer wall of the mounting portion 125. It is understood that the thickness direction of the main body 122 is defined as a direction perpendicular to the vibration direction of the vibration system 2, that is, the thickness direction of the main body 122 is a direction from the inside to the outside of the main body 122.

It can be appreciated that the first air hole 1211 is disposed at an intermediate position in the thickness direction of the main body 122, so that the structural strength of the middle case 12 is effectively improved, and the connection between the main body 122 and the diaphragm assembly 21 is not affected.

In an embodiment, the mounting portion 125 is provided with an inclined surface 123 on a side facing away from the rear case 13, and the second air hole 1212 is provided on the inclined surface 123, and the inclined surface 123 extends obliquely toward a direction approaching or separating from the rear case 13 along the vibration direction of the vibration system 2. It will be appreciated that the outer side of the middle case 12 is provided with an inclined surface 123, and the second air holes 1212 are provided at the inclined surface 123, and the inclined surface 123 extends obliquely toward a direction approaching or separating from the rear case 13 in the vibration direction of the vibration system 2.

In the present embodiment, as shown in fig. 1 to 7, by forming the inclined surface 123 on the outer wall of the mounting portion 125 of the middle case 12, when the sound generating device 100 is mounted in the housing or case of the electronic apparatus, a side sound generating space is formed by the inclined surface 123 and the housing or case of the electronic apparatus, so as to keep the second air hole 1212 and the rear cavity air flow unobstructed.

It will be appreciated that the inclined surface 123 is inclined from the end of the middle housing 12 facing away from the rear housing 13 to the end of the rear housing 13, toward the direction gradually approaching the vibration system 2 or the vibration space, i.e., the thickness of the main body portion 122 gradually decreases from the front housing 11 to the rear housing 13.

In an embodiment, the pressure release channel 121 includes a first extension 1213 and a second extension 1214, where the first extension 1213 is connected to the first air hole 1211, and the first extension 1213 extends along the vibration direction of the vibration system 2, and the second extension 1214 is connected to the second air hole 1212, and the extension direction of the second extension 1214 is set at an angle with the extension direction of the first extension 1213.

In this embodiment, as shown in fig. 1, 3, 4, 6 and 7, by arranging the pressure release channel 121 as the first extension 1213 and the second extension 1214 that are in communication, the extension direction of the second extension 1214 is set at an included angle with the extension direction of the first extension 1213, that is, the pressure release channel 121 guides the first extension 1213 to communicate with the second air hole 1212 on the side wall of the middle shell 12 through the second extension 1214, so that the opening volume of the connecting portion between the middle shell 12 and the diaphragm assembly 21 can be reduced, and the structural strength of the middle shell 12 can be improved.

It will be appreciated that the first extension 1213 of the pressure relief channel 121 may alternatively extend in the direction of vibration of the vibration system 2, i.e. the first extension 1213 extends from the side of the middle housing 12 adjacent the front housing 11 towards the rear housing 13. The second extension 1214 communicates with the second extension 1214 and the second air hole 1212, which effectively reduces the extension of the pressure relief passage 121 within the center housing 12. Alternatively, the first extension 1213 is provided to the main body portion 122 of the middle case 12, and the second extension 1214 is provided to the mounting portion 125 of the middle case 12.

In an embodiment, as shown in fig. 3 and 4, the second extension 1214 extends obliquely in a direction away from the vibration system 2 in the vibration direction of the vibration system 2, and communicates with the second air hole 1212.

In this embodiment, the extending direction of the second extension section 1214 is inclined. Optionally, the extending direction of the second extension 1214 forms an angle with the extending direction of the first extension 1213 in a range of more than 0 ° and less than 180 °. It will be appreciated that to enhance the structural strength of the center housing 12, the second extension 1214 is located on the side of the first extension 1213 remote from the first air bore 1211. Optionally, the extending direction of the second extension 1214 and the extending direction of the first extension 1213 form an included angle in a range of 90 ° or more and less than 180 °.

In an embodiment, the housing assembly 1 further includes a front shell 11, the front shell 11 covers a side of the middle shell 12 away from the rear shell, the front shell 11 and the diaphragm assembly 21 cooperate to define a first space, the first space is the front acoustic cavity 4, and a mounting surface 124 is formed on a side of the middle shell 12 facing away from the rear shell 13; the mounting face 124 is ultrasonically welded to the front housing 11; or, the mounting surface 124 is glued and sealed to the inner wall of the front case 11.

In the present embodiment, the front case 11 is connected to the periphery of the main body 122; or, the front shell 11 is connected to a side of the main body 122 facing away from the rear shell 13, and the diaphragm assembly 21, the main body 122 and the front shell 11 are enclosed to form the front acoustic chamber 4, so that the first air hole 1211 and the front acoustic chamber 4 can be directly communicated conveniently, and the front shell 11 is prevented from shielding the first air hole 1211.

In one embodiment, the middle shell 12 is provided with a mounting surface 124 disposed opposite the front shell 11. It will be appreciated that the mounting face 124 is located on a side of the body portion 122 facing away from the rear housing 13. In the present embodiment, the first air hole 1211 is provided to the mounting surface 124. Optionally, the first air hole 1211 is located at an intermediate position of the mounting surface 124.

In the present embodiment, the welding rib extending in the direction of the front case 11 is provided on the mounting surface 124, so that the front case 11 is welded to the welding rib, thereby improving the welding effect and realizing the sealing. It will be appreciated that the weld bead of the center housing 12 is laser welded to the front housing 11. Of course, in other embodiments, the mounting surface 124 is adhesively sealed to the inner wall of the front housing 11.

It should be noted that, in order to ensure that the first air hole 1211 is in direct communication with the front acoustic chamber 4, the first air hole 1211 is located on a side of the welding rib or glue layer facing the diaphragm assembly 21. It will be appreciated that the weld bead or glue layer protrudes a certain height or distance from the mounting surface 124 in order to ensure that the first air opening 1211 is air-vented to the front acoustic chamber 4.

In this embodiment, the sound generating device 100 is installed in a housing or a box of an electronic device, the middle shell 12 is sandwiched between the diaphragm 211 and the front shell 11, the middle shell 12 and the diaphragm 211 form a front acoustic cavity 4, and the middle shell 13, the front shell 11, the middle shell 12 and the diaphragm 211 cooperate to form a rear cavity. It can be appreciated that the rear cavity includes a vibration space disposed in the sound generating apparatus 100 and a rear acoustic cavity disposed outside the sound generating apparatus 100 and communicating with the vibration space. The middle shell 12 is fixedly connected with the front shell 11 through a welding rib or an adhesive layer, and specifically, the welding rib or the adhesive layer is in a rectangular ring shape and is arranged between the front shell 11 and the middle shell 12.

It will be appreciated that the vibration system 2 includes a diaphragm 211 for vibrationally producing sound and a voice coil 22 positioned below the diaphragm 211 to drive the diaphragm 211 to vibrationally produce sound. The magnetic circuit system 3 is used for driving the vibration system 2 to vibrate and sound. In the present embodiment, as shown in fig. 2 to 4, the magnetic circuit 3 includes a yoke 32, a central magnetic circuit portion 33 and a side magnetic circuit portion 34, the yoke 32 is connected to the rear case 13, the central magnetic circuit portion 33 and the side magnetic circuit portion 34 are disposed on a side of the yoke 32 facing the diaphragm 211, and the side magnetic circuit portion 34 is located outside the central magnetic circuit portion 33 and cooperates with the central magnetic circuit portion 33 to form the magnetic gap 31.

In this embodiment, the voice coil 22 is suspended within the magnetic gap. Current is introduced into the voice coil 22, so that the voice coil 22 can drive the vibrating diaphragm 311 to vibrate under the action of the magnetic field in the magnetic gap 31 of the magnetic circuit system 3, and the vibrating diaphragm assembly 21 can vibrate and sound. It will be appreciated that, in order to avoid polarization or oscillation of the voice coil 22 during vibration, the vibration system 2 further includes a centering plate 23, one end of the centering plate 23 is connected to the voice coil 22, and the other end of the centering plate 23 is connected to the housing assembly 1.

It will be appreciated that the centering disc 23 may be disposed between the diaphragm assembly 21 and the voice coil 22; alternatively, the centering pad 23 may be disposed at an end of the voice coil 22 away from the diaphragm assembly 21. In this embodiment, the centering pads 23 may also be used to conduct external circuitry to the voice coil 22.

In an embodiment, the outer peripheral wall of the front case 11 is further provided with a sealing ring 111, and the sealing ring 111 is adhered to or integrally injection-molded with the front case 11.

In the present embodiment, as shown in fig. 1 to 5, by providing the sealing ring 111 on the outer peripheral wall of the front case 11, when the sound emitting device 100 is mounted in the housing or case of the electronic apparatus, the front case 11 of the sound emitting device 100 is hermetically connected to the housing or case of the electronic apparatus through the sealing ring 111. It will be appreciated that the sealing ring 111 may be integrally injection molded to the outer peripheral wall of the front housing 11. Of course, in other embodiments, the sealing ring 111 may be bonded to the front housing 11 in a sealing manner, which is not limited herein.

It should be noted that, the front shell 11 of the housing assembly 1 is further provided with an acoustic outlet communicated with the front acoustic cavity 4, so that the sound generated by the vibration of the diaphragm 211 of the diaphragm assembly 21 can be conveniently transmitted smoothly through the front acoustic cavity 4 and the acoustic outlet. It will be appreciated that when the sound generating apparatus 100 is installed in a housing or a casing of an electronic device, the front sound cavity 4 is communicated with a sound outlet pipe of the housing or the casing of the electronic device through a sound outlet.

In one embodiment, the diaphragm assembly 21 includes a diaphragm 211 and a diaphragm plate 212, and the diaphragm 211, the diaphragm plate 212 and the middle housing 12 are integrally injection molded.

In this embodiment, as shown in fig. 2 to 7, by providing the diaphragm assembly 21 and the middle shell 12 as an integrally formed structure, not only the connection strength between the diaphragm assembly 21 and the middle shell 12 can be improved, but also the sealing performance between the diaphragm assembly 21 and the middle shell 12 can be effectively ensured.

It will be appreciated that the diaphragm plate 212 of the diaphragm assembly 21 may alternatively be of flat plate-like configuration. The diaphragm 211 of the diaphragm assembly 21 has an inner connecting portion, a ring-folded portion surrounding the inner connecting portion, and an outer connecting portion surrounding the ring-folded portion, and the inner connecting portion of the diaphragm 211 and the diaphragm 212 may be integrally injection molded or bonded, which is not limited herein. The outer connecting portion of the diaphragm 211 and the main body 122 of the middle case 12 may be integrally injection molded or bonded, which is not limited herein.

In this embodiment, in order to further improve the connection stability between the middle shell 12 and the diaphragm 211, a positioning protrusion may be disposed on one of the outer connecting portion of the diaphragm 211 and the main body portion 122 of the middle shell 12, and a positioning groove may be disposed on the other of the outer connecting portion and the main body portion, so that the connection strength can be improved while positioning fit is achieved by using the matching structure of the positioning protrusion and the positioning groove.

Alternatively, the folded ring portion of the diaphragm 211 may be a convex or concave structure. In order to avoid interference of the folded ring portion of the diaphragm 211 with the front case 11 during vibration, and influence the vibration effect, in the present embodiment, as shown in fig. 1 to 7, the folded ring portion of the diaphragm 211 is formed to be recessed from the front case 11 side toward the rear case 13 side, which is not limited herein.

In an embodiment, an adhesive layer 6 is arranged between the waterproof breathable film 5 and the outer wall of the shell assembly 1, the adhesive layer 6 comprises a body and ventilation holes formed in the body, and the ventilation holes are opposite to the waterproof breathable film 5.

In this embodiment, as shown in fig. 3 to 5, by providing the adhesive layer 6, not only the connection and fixation of the waterproof breathable film 5 and the outer wall of the middle case 12 can be achieved, but also the waterproof performance can be improved. Optionally, the adhesive layer 6 is disposed around the second air hole 1212, so that the adhesive layer 6 forms an air hole, and at this time, the air hole is correspondingly communicated with the second air hole 1212, and the waterproof and breathable film 5 covers the air hole and the second air hole 1212.

It will be appreciated that, in order to further improve the connection stability and waterproof performance, the length of the body of the adhesive layer 6 from the ventilation hole to the outer periphery is optionally greater than 0.5mm, which is not limited herein.

In one embodiment, as shown in fig. 7, the pressure relief channels 121 include a plurality of pressure relief channels 121, and the plurality of pressure relief channels 121 are spaced apart. It will be appreciated that such an arrangement is effective to ensure the venting of the plurality of venting channels 121, thereby balancing the pressure of the diaphragm 211 of the diaphragm assembly 21.

In this embodiment, the plurality of pressure relief channels 121 may be disposed in one-to-one correspondence with the plurality of first air holes 1211. Of course, in other embodiments, the plurality of pressure release channels 121 may share one first air hole 1211, where the first air hole 1211 extends in a strip shape, and one ends of the plurality of pressure release channels 121 are all communicated with the first air hole 1211, which is not limited herein. It is understood that the plurality of pressure relief channels 121 may be disposed in one-to-one correspondence with the plurality of second air holes 1212. Of course, in other embodiments, the plurality of pressure release channels 121 may share one second air hole 1212, where the second air hole 1212 extends in a strip shape on the outer wall of the middle shell 12, and one end of each of the plurality of pressure release channels 121 is communicated with the second air hole 1212, which is not limited herein.

In one embodiment, the waterproof and breathable film 5 includes a plurality of waterproof and breathable films 5 and the second air holes 1212 of the pressure release channels 121 are disposed in a one-to-one correspondence. In another embodiment, the waterproof and breathable membrane 5 is one, and the waterproof and breathable membrane 5 covers the second air holes 1212 of the plurality of pressure release channels 121, which is not limited herein.

It is to be understood that the number of the pressure release channels 121, the number of the first air holes 1211, and the number of the second air holes 1212 may be set according to actual requirements and the structure of the middle shell 12, which is not limited herein. Of course, the number of the waterproof and breathable films 5 is specifically selected and set according to actual needs, and is not limited herein.

The utility model also provides electronic equipment, which comprises the sounding device 100. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the sound generating device at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

In this embodiment, the electronic device further includes a device housing, the device housing has a mounting cavity and a sound outlet channel communicating with the mounting cavity, the sound generating device 100 is disposed in the mounting cavity of the device housing, the front sound cavity 4 of the sound generating device 100 is communicated with the sound outlet channel, the sound generating device 100 and the device housing further enclose to form a rear sound cavity, and the second air hole 1212 is communicated with the rear sound cavity.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (12)

1. A sound emitting device, the sound emitting device comprising:

the shell assembly is provided with a pressure relief channel, a first air hole and a second air hole, and the second air hole is positioned on the outer side wall of the shell assembly;

the vibration system comprises a vibrating diaphragm assembly, the outer periphery of the vibrating diaphragm assembly is connected with the shell assembly, a first space and a second space are respectively arranged on two opposite sides of the vibrating diaphragm assembly, the second space comprises an inner space positioned inside the sound generating device and an outer space positioned outside the sound generating device, the pressure release channel is communicated with the first space through the first air hole, and the pressure release channel is communicated with the outer space through the second air hole; a kind of electronic device with high-pressure air-conditioning system

The waterproof breathable film is arranged on the outer side wall of the shell assembly and covers the second air hole.

2. The sound generating apparatus according to claim 1, wherein the housing assembly comprises a middle case and a rear case, one side of the middle case is connected with the rear case, one side of the middle case away from the rear case is connected with an outer periphery of the diaphragm assembly, the middle case is provided with the pressure release passage, the first air hole and the second air hole, the first air hole is located on one side of the middle case away from the rear case and is located adjacent to the diaphragm assembly, and the second air hole is located on an outer side wall of the middle case.

3. The sound generating apparatus according to claim 2, wherein the middle case includes a main body portion and a mounting portion, the mounting portion is connected to a peripheral side of the main body portion and extends toward the rear case, an outer peripheral edge of the diaphragm assembly is connected to an inner side of the main body portion, the rear case is connected to a side of the main body portion away from the diaphragm assembly and abuts against the mounting portion, the first air hole is provided at a side of the main body portion facing away from the rear case, the second air hole is provided at a side of the mounting portion facing away from the rear case, and the pressure release passage extends from the main body portion to the mounting portion.

4. The sound generating apparatus according to claim 3, wherein a direction perpendicular to a vibration direction of the vibration system is defined as a thickness direction of the main body portion, and the first air hole is located at an intermediate position in the thickness direction of the main body portion;

and/or one side of the mounting part, which is away from the rear shell, is provided with an inclined surface, the second air hole is arranged on the inclined surface, and the inclined surface obliquely extends towards the direction close to or far away from the rear shell along the vibration direction of the vibration system.

5. The sound generating apparatus according to claim 2, wherein the pressure release passage comprises a first extension section and a second extension section which are communicated, one end of the first extension section away from the second extension section is communicated with the first air hole, the first extension section extends along the vibration direction of the vibration system, one end of the second extension section away from the first extension section is communicated with the second air hole, and the extension direction of the second extension section is arranged at an included angle with the extension direction of the first extension section.

6. The sound emitting apparatus of claim 5, wherein the second extension section extends obliquely in a direction away from the vibration system in a vibration direction of the vibration system and communicates with the second air hole.

7. The sound generating apparatus according to claim 2, wherein the housing assembly further comprises a front housing cover disposed on a side of the middle housing facing away from the rear housing, the front housing and the diaphragm assembly cooperatively defining the first space, the first space being a front sound cavity, and a side of the middle housing facing away from the rear housing forming a mounting surface;

the mounting surface is ultrasonically welded with the front shell; or the mounting surface is glued and sealed with the inner wall of the front shell.

8. The sound emitting device of claim 7, wherein the peripheral wall of the front housing is further provided with a sealing ring, and the sealing ring is adhered to the front housing or integrally injection molded.

9. The sound emitting apparatus of claim 2 wherein the diaphragm assembly comprises a diaphragm and a diaphragm, the diaphragm and the center housing being integrally injection molded.

10. The sound generating apparatus of claim 1, wherein an adhesive layer is disposed between the waterproof breathable film and the outer wall of the housing assembly, the adhesive layer comprising a body and a vent hole disposed in the body, the vent hole being disposed opposite the waterproof breathable film.

11. The sound emitting apparatus of any one of claims 1-10, wherein the pressure relief channel comprises a plurality of pressure relief channels, the plurality of pressure relief channels being spaced apart;

the waterproof breathable films are arranged in a one-to-one correspondence with the second air holes of the pressure relief channels; or, the waterproof breathable film is one, and the waterproof breathable film covers the second air holes of the pressure relief channels.

12. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 11.