Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker which comprises a frame, a vibration system, a magnetic circuit system and a waterproof breathable film. An air hole is formed in the basin frame and is communicated with the inner peripheral surface and the outer peripheral surface of the basin frame; the vibration system is arranged on one side of the basin stand; the magnetic circuit system is arranged on one side of the frame away from the vibration system; the waterproof breathable film is connected to the basin stand and covers the breathable holes. According to the miniature loudspeaker, the air holes are formed in the basin stand, so that the air pressure of the front cavity and the rear cavity of the miniature loudspeaker module is balanced, and the waterproof performance of the miniature loudspeaker is improved; the design is simple, the production difficulty is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker. Background Art

[0002] With the continuous advancement of chip technology, battery technology, and sensor technology, smart watches are able to achieve more functions, such as health monitoring, communication, navigation, etc., thereby increasing their practicality and appeal. At the same time, smart watches also need to have a waterproof rating of 5ATM or above, and the micro speakers in smart watches must also have a waterproof rating of 5ATM or above. In order to solve the problem of inconsistent air pressure in the front and rear cavities of the micro speaker module during diving, which may cause damage to the micro speaker, the existing technology usually provides a vent hole on the middle sticker of the micro speaker and covers the vent hole with a waterproof breathable membrane to balance the air pressure in the front and rear cavities of the micro speaker module, thereby improving the diving performance of the micro speaker. However, this method also increases the difficulty of producing the middle sticker, resulting in higher production costs for the micro speaker. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a miniature loudspeaker with strong diving performance and low production difficulty.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a micro speaker, comprising:

[0005] A basin frame, wherein the basin frame is provided with air holes, and the air holes communicate with the inner circumference and the outer circumference of the basin frame;

[0006] A vibration system, the vibration system being arranged on one side of the basin frame;

[0007] a magnetic circuit system, the magnetic circuit system being arranged on a side of the basin frame away from the vibration system;

[0008] A waterproof and breathable membrane is connected to the basin frame and covers the air holes.

[0009] Furthermore, there are multiple air holes.

[0010] Furthermore, a receiving groove is provided on the outer peripheral surface of the basin frame, the air vent is connected to the bottom surface of the receiving groove, and the waterproof breathable membrane is provided in the receiving groove.

[0011] Furthermore, a sealing ring is provided on the outer peripheral surface of the basin frame.

[0012] Furthermore, the basin frame includes a first frame body and a second frame body that are cooperatively connected, and a breathable gap is formed between the first frame body and the second frame body, and the breathable gap connects the inner circumference and the outer circumference of the basin frame; the breathable hole is opened on the first frame body, or the breathable hole is opened on the second frame body.

[0013] Furthermore, a glue containing groove is provided on a side of the first frame close to the second frame, or a glue containing groove is provided on a side of the second frame close to the first frame.

[0014] Furthermore, the vibration system includes a diaphragm and a voice coil, the outer peripheral edge of the diaphragm is connected to the basin frame, and the voice coil is connected to the inner side of the diaphragm.

[0015] Furthermore, a protruding connecting portion is provided on the outer peripheral edge of the diaphragm, a slot is provided on the inner peripheral surface of the basin frame, and the connecting portion is provided in the slot.

[0016] Furthermore, the diaphragm includes a connected diaphragm body and a middle sticker, the diaphragm body is ring-shaped, and the middle sticker covers the hollow area of the diaphragm body.

[0017] Furthermore, the magnetic circuit system includes a yoke, a magnet and a washer, the yoke is connected to the basin frame, the magnet is connected to the inner side of the yoke, and the washer is connected to the side of the magnet away from the yoke.

[0018] The beneficial effects of the present invention are as follows: the micro speaker has air holes on the basin frame to balance the air pressure in the front and rear cavities of the micro speaker module, thereby improving the waterproof performance of the micro speaker; the design is simple, which helps to reduce production difficulty and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the micro-speaker according to the first embodiment of the present utility model;

[0020] Figure 2 A top view of the micro-speaker according to the first embodiment of the present invention;

[0021] Figure 3 for Figure 2 Middle AA section view;

[0022] Figure 4 for Figure 2 Middle BB section view.

[0023] Description of labels:

[0024] 1. Basin frame; 11. First frame; 111. Ventilation hole; 112. Receiving slot; 113. Ventilation gap; 114. Card slot; 12. Second frame; 121. Glue storage slot;

[0025] 2. Vibration system; 21. Diaphragm; 211. Connecting part; 212. Diaphragm body; 213. Middle sticker; 22. Voice coil;

[0026] 3. Magnetic circuit system; 31. Yoke; 32. Magnetic steel; 33. Washer;

[0027] 4. Waterproof and breathable membrane;

[0028] 5. Sealing ring. DETAILED DESCRIPTION

[0029] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0030] Please refer to Figures 1 to 4 , a micro speaker comprising:

[0031] A basin frame 1, wherein the basin frame 1 is provided with an air vent 111, wherein the air vent 111 communicates with the inner circumference and the outer circumference of the basin frame 1;

[0032] A vibration system 2, the vibration system 2 is provided on one side of the basin frame 1;

[0033] a magnetic circuit system 3, the magnetic circuit system 3 being arranged on a side of the basin frame 1 away from the vibration system 2;

[0034] A waterproof and breathable membrane 4 is connected to the basin frame 1 and covers the air holes 111 .

[0035] From the above description, it can be seen that the beneficial effects of the present invention are: the micro speaker has an air vent 111 on the basin frame 1 to balance the air pressure in the front cavity and the rear cavity of the micro speaker module, thereby improving the waterproof performance of the micro speaker; the design is simple, which is conducive to reducing production difficulty and reducing production costs.

[0036] Furthermore, there are multiple air holes 111.

[0037] It can be seen from the above description that the plurality of air holes 111 can improve the air permeability.

[0038] Furthermore, a receiving groove 112 is provided on the outer peripheral surface of the basin frame 1 , the air holes 111 are connected to the bottom surface of the receiving groove 112 , and the waterproof breathable membrane 4 is provided in the receiving groove 112 .

[0039] As can be seen from the above description, placing the waterproof breathable membrane 4 in the receiving groove 112 can prevent the waterproof breathable membrane 4 from protruding from the outer surface of the basin frame 1, thereby reducing the risk of the waterproof breathable membrane 4 falling off due to external forces.

[0040] Furthermore, a sealing ring 5 is provided on the outer peripheral surface of the basin frame 1 .

[0041] From the above description, it can be seen that the sealing ring 5 is used to close the assembly gap between the micro speaker and the module housing, preventing the front cavity and the rear cavity of the micro speaker module from being connected through the assembly gap between the micro speaker and the module housing, thereby ensuring the sound effect of the micro speaker module.

[0042] Furthermore, the basin frame 1 includes a first frame body 11 and a second frame body 12 that are cooperatively connected, and a breathable gap 113 is formed between the first frame body 11 and the second frame body 12, and the breathable gap 113 connects the inner circumference and the outer circumference of the basin frame 1; the breathable hole 111 is opened on the first frame body 11, or the breathable hole 111 is opened on the second frame body 12.

[0043] As can be seen from the above description, providing the ventilation gap 113 between the first frame 11 and the second frame 12 can reduce the number of ventilation holes 111 , thereby reducing the production difficulty and cost of the micro speaker.

[0044] Furthermore, a glue receiving groove 121 is provided on a surface of the first frame 11 close to the second frame 12 , or a glue receiving groove 121 is provided on a surface of the second frame 12 close to the first frame 11 .

[0045] As can be seen from the above description, the glue holding groove 121 is used to hold glue to make the connection between the first frame 11 and the second frame 12 more stable.

[0046] Furthermore, the vibration system 2 includes a diaphragm 21 and a voice coil 22 . The outer peripheral edge of the diaphragm 21 is connected to the basin frame 1 , and the voice coil 22 is connected to the inner side of the diaphragm 21 .

[0047] Furthermore, a protruding connecting portion 211 is provided on the outer peripheral edge of the diaphragm 21 , and a slot 114 is provided on the inner peripheral surface of the basin frame 1 , and the connecting portion 211 is disposed in the slot 114 .

[0048] As can be seen from the above description, the connection portion 211 cooperates with the slot 114 to increase the contact area between the diaphragm 21 and the frame 1 , making the connection between the diaphragm 21 and the frame 1 more stable.

[0049] Furthermore, the diaphragm 21 includes a diaphragm body 212 and a middle sticker 213 connected to each other. The diaphragm body 212 is ring-shaped, and the middle sticker 213 covers the hollow area of the diaphragm body 212 .

[0050] As can be seen from the above description, the middle sticker 213 can increase the rigidity of the diaphragm 21 , improve the high-frequency response of the micro-speaker, and ensure high sound pressure of the diaphragm 21 .

[0051] Furthermore, the magnetic circuit system 3 includes a yoke 31, a magnet 32 and a washer 33. The yoke 31 is connected to the basin frame 1, the magnet 32 is connected to the inner side of the yoke 31, and the washer 33 is connected to the side of the magnet 32 away from the yoke 31.

[0052] As can be seen from the above description, the washer 33 and the yoke 31 play a role in magnetic conduction, thereby improving the sensitivity of the micro speaker and reducing the distortion of the micro speaker.

[0053] Please refer to Figures 1 to 4 Embodiment 1 of the present invention is: a miniature loudspeaker, comprising a basin frame 1, a vibration system 2, a magnetic circuit system 3 and a waterproof breathable membrane 4; the basin frame 1 is in a rounded rectangular ring shape, and is provided with an air vent 111 on the basin frame 1, and the air vent 111 connects the inner circumference and the outer circumference of the basin frame 1; the vibration system 2 is arranged on one side of the basin frame 1; the magnetic circuit system 3 is arranged on the side of the basin frame 1 away from the vibration system 2; the waterproof breathable membrane 4 is connected to the basin frame 1 and covers the air vent 111.

[0054] The basin frame 1 includes a first frame body 11 and a second frame body 12 that are matched and connected. An air permeable gap 113 is formed between the first frame body 11 and the second frame body 12. The air permeable gap 113 connects the inner circumference and the outer circumference of the basin frame 1. The air vents 111 are provided on the first frame body 11, or the air vents 111 are provided on the second frame body 12. Specifically, the first frame body 11 and the second frame body 12 are adhesively connected. The first frame body 11 and the second frame body 12 are both in the shape of rounded rectangular rings. The vibration system 2 is connected to the first frame body 11, and the magnetic circuit system 3 is connected to the second frame body 12. The air vents 111 are provided on the first frame body 11. The air vents 111 are used to connect the inner cavity of the micro speaker and the front cavity of the micro speaker module. There are two air vents 111, and the two air vents 111 are symmetrically provided on both sides of the first frame body 11 of the basin frame 1. There are four ventilation slits 113, located at the four corners of the frame 1. These slits 113 connect the inner cavity of the micro-speaker to the rear cavity of the micro-speaker module. In other embodiments, the number of ventilation holes 111 may be one, three, or more. It is also feasible to have only multiple ventilation holes 111 on the frame 1, without ventilation slits 113. At least one of the multiple ventilation holes 111 connects the inner cavity of the micro-speaker to the front cavity of the micro-speaker module, and at least one of the multiple ventilation holes 111 connects the inner cavity of the micro-speaker to the rear cavity of the micro-speaker module.

[0055] In this embodiment, a glue groove 121 is provided on the side of the second frame 12 adjacent to the first frame 11. The glue groove 121 is used to receive glue, thereby further stabilizing the connection between the first frame 11 and the second frame 12. In other embodiments, it is also feasible to provide the glue groove 121 on the side of the first frame 11 adjacent to the second frame 12.

[0056] The outer surface of the basin frame 1 is provided with a receiving groove 112. The vent holes 111 communicate with the bottom surface of the receiving groove 112. The waterproof breathable membrane 4 is disposed within the receiving groove 112. Specifically, the depth of the receiving groove 112 is greater than or equal to the thickness of the waterproof breathable membrane 4. As will be readily understood, placing the waterproof breathable membrane 4 within the receiving groove 112 prevents the membrane 4 from protruding from the outer surface of the basin frame 1, thereby reducing the risk of the membrane 4 being dislodged by external forces.

[0057] A sealing ring 5 is provided on the outer circumference of the basin frame 1. The sealing ring 5 is used to seal the assembly gap between the micro speaker and the module housing, preventing the front and rear cavities of the micro speaker module from connecting through the assembly gap between the micro speaker and the module housing, thereby ensuring the sound effect of the micro speaker module.

[0058] The vibration system 2 includes a diaphragm 21 and a voice coil 22. The outer edge of the diaphragm 21 is connected to the frame 1, and the voice coil 22 is connected to the inner side of the diaphragm 21. The diaphragm 21 includes a diaphragm body 212 and a center patch 213. The diaphragm body 212 is annular, and the center patch 213 covers the hollow area of the diaphragm body 212. The outer edge of the diaphragm body 212 is provided with a protruding connecting portion 211. The inner circumference of the frame 1 is provided with a slot 114, and the connecting portion 211 is located within the slot 114.

[0059] The magnetic circuit system 3 includes a yoke 31 , a magnet 32 and a washer 33 . The yoke 31 is connected to the basin frame 1 , the magnet 32 is connected to the inner side of the yoke 31 , and the washer 33 is connected to the side of the magnet 32 away from the yoke 31 .

[0060] To sum up, the micro speaker provided by the present invention has air holes on the basin frame to balance the air pressure in the front and rear cavities of the micro speaker module, thereby improving the waterproof performance of the micro speaker; the design is simple, which is conducive to reducing production difficulty and reducing production costs.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A micro speaker, characterized in that: include: A basin frame, wherein the basin frame is provided with air holes, and the air holes communicate with the inner circumference and the outer circumference of the basin frame; A vibration system, the vibration system being arranged on one side of the basin frame; a magnetic circuit system, the magnetic circuit system being arranged on a side of the basin frame away from the vibration system; A waterproof and breathable membrane is connected to the basin frame and covers the air holes.

2. The micro-speaker according to claim 1, wherein: There are multiple air holes.

3. The micro-speaker according to claim 1, wherein: A receiving groove is provided on the outer peripheral surface of the basin frame, the air vent is communicated with the bottom surface of the receiving groove, and the waterproof breathable membrane is arranged in the receiving groove.

4. The micro-speaker according to claim 1, wherein: A sealing ring is provided on the outer peripheral surface of the basin frame.

5. The micro-speaker according to claim 1, wherein: The basin frame includes a first frame body and a second frame body that are matched and connected, and a breathable gap is formed between the first frame body and the second frame body, and the breathable gap connects the inner circumference and the outer circumference of the basin frame; the breathable hole is opened on the first frame body, or the breathable hole is opened on the second frame body.

6. The micro-speaker according to claim 5, wherein: A glue containing groove is provided on a side of the first frame close to the second frame, or a glue containing groove is provided on a side of the second frame close to the first frame.

7. The micro-speaker according to claim 1, wherein: The vibration system includes a diaphragm and a voice coil. The outer peripheral edge of the diaphragm is connected to the basin frame, and the voice coil is connected to the inner side of the diaphragm.

8. The micro-speaker according to claim 7, wherein: A protruding connecting portion is provided on the outer peripheral edge of the diaphragm, a clamping groove is provided on the inner peripheral surface of the basin frame, and the connecting portion is arranged in the clamping groove.

9. The micro-speaker according to claim 7, wherein: The diaphragm includes a connected diaphragm body and a middle sticker. The diaphragm body is ring-shaped, and the middle sticker covers the hollow area of the diaphragm body.

10. The micro-speaker according to claim 1, wherein: The magnetic circuit system includes a yoke, a magnetic steel and a washer. The yoke is connected to the basin frame, the magnetic steel is connected to the inner side of the yoke, and the washer is connected to the side of the magnetic steel away from the yoke.

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