Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand and a magnetic circuit assembly, the basin stand comprises a main body and an elastic clamping block which are connected, the main body is in a ring frame shape, and the elastic clamping block comprises an elastic arm and a clamping head which are connected; the magnetic circuit assembly comprises a yoke and an edge magnetic structure arranged on the yoke, the top of the edge magnetic structure is bonded with the basin stand, the bottom surface of the magnetic circuit assembly is provided with a clamping groove matched with the clamping head, and the clamping groove is communicated with the peripheral wall of the magnetic circuit assembly. According to the sound production unit, the basin stand and the magnetic circuit assembly are not only in adhesive connection but also in clamping connection, and the basin stand can hook the magnetic circuit assembly through the elastic clamping block, so that the binding force between the basin stand and the magnetic circuit assembly is effectively increased, the risk that the magnetic circuit assembly falls off when the sound production unit falls off is reduced, and the structural stability of the sound production unit is improved.

Description

Technical Field

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

[0002] The sound unit includes a basin frame and a vibration assembly and a magnetic circuit assembly fixedly connected to the basin frame. In the existing technology, the magnetic circuit assembly is generally connected to the basin frame by gluing. However, the basin frame and the magnetic circuit assembly are only glued together, and the bonding strength between the two is not high. Therefore, when the sound unit is dropped during a drop test, the magnetic circuit assembly sometimes falls off, that is, the existing sound unit still has the problem of poor structural stability. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a sound-generating unit with a stable structure.

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

[0005] A basin frame, the basin frame comprising a main body and an elastic clamping block connected to each other, the main body being in a ring frame shape, and the elastic clamping block comprising an elastic arm and a clamping head connected to each other;

[0006] A magnetic circuit assembly includes a yoke and a side magnetic structure provided on the yoke, the top of the side magnetic structure is bonded to the basin frame, the bottom surface of the magnetic circuit assembly has a card slot that cooperates with the card head, and the card slot is connected to the outer peripheral wall of the magnetic circuit assembly.

[0007] In one embodiment, the elastic block and the main body are an integral structure formed by integral injection molding.

[0008] In one embodiment, the inner side of the bottom of the clamping head has a guiding surface, and the guiding surface is an inclined surface or an arc surface; the top surface of the clamping head is a clamping surface for abutting against the top surface of the clamping slot.

[0009] In one embodiment, an outer side surface of the magnetic circuit assembly is provided with an escape groove for evading the elastic arm, and a bottom end of the escape groove is connected to the clamping slot.

[0010] In one embodiment, the edge magnetic structure includes edge magnetic steel and edge washers, the bottom surface of the edge magnetic steel is glued to the yoke iron, and the top surface of the edge magnetic steel is glued to the edge washer and the basin frame respectively.

[0011] In one embodiment, the basin frame has a connecting flange protruding inward, and the bottom surface of the connecting flange is bonded and fixed to the top surface of the edge magnetic steel.

[0012] In one embodiment, the outer side surface of the edge washer is bonded to the connecting flange.

[0013] In one embodiment, the depth of the card slot is less than the thickness of the yoke; alternatively, the depth of the card slot is equal to the thickness of the yoke; alternatively, the depth of the card slot is greater than the thickness of the yoke and less than the sum of the thickness of the yoke and the thickness of the side magnet.

[0014] In one embodiment, at least one pair of opposite sides of the main body is provided with the elastic clamping blocks, and the elastic clamping blocks located on the opposite sides of the main body are arranged oppositely.

[0015] In one embodiment, the speaker frame further has positioning columns connected to the main body, the number of the positioning columns is multiple, and the yoke has positioning notches matched with the positioning columns.

[0016] The beneficial effects of the present utility model are as follows: In the present sounding unit, the speaker frame and the magnetic circuit assembly are not only adhesively connected, but also clamped. The speaker frame can hook the magnetic circuit assembly through the elastic clamping blocks, effectively increasing the bonding force between the speaker frame and the magnetic circuit assembly, reducing the risk of the magnetic circuit assembly falling off when the sounding unit drops, and improving the structural stability of the sounding unit. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the sounding unit according to Embodiment 1 of the present utility model;

[0019] Figure 2 It is a cross-section of the sounding unit according to Embodiment 1 of the present utility model Figure 1 ;

[0020] Figure 3 It is a cross-section of the sounding unit according to Embodiment 1 of the present utility model Figure 2 .

[0021] Explanation of the Reference Numerals in the Drawings:

[0022] 1. Speaker frame; 11. Main body; 12. Elastic clamping block; 121. Elastic arm; 122. Clamping head; 123. Guiding surface; 124. Clamping surface; 13. Connecting flange; 14. Positioning column;

[0023] 2. Magnetic circuit assembly; 21. Card slot; 22. Avoidance slot; 23. Yoke; 231. Positioning notch; 24. Central magnetic structure; 25. Side magnetic structure; 251. Side magnet; 252. Side washer;

[0024] 3. Vibration assembly; 31. Diaphragm assembly; 32. Voice coil. Specific embodiments

[0025] The implementation, functional characteristics and advantages of the present utility model will be further described in combination with embodiments and with reference to the accompanying drawings.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, then the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0029] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 3 In Embodiment 1 of the present utility model: The sound generating unit includes a chassis 1, a magnetic circuit assembly 2 and a vibration assembly 3. The vibration assembly 3 includes a diaphragm assembly 31 and a voice coil 32. The diaphragm assembly 31 connects the voice coil 32 and the chassis 1;

[0033] The chassis 1 includes a connected main body 11 and an elastic clamping block 12. Preferably, the elastic clamping block 12 and the main body 11 are an integrally injection-molded integral structure; the main body 11 is in a ring frame shape, and the elastic clamping block 12 includes a connected elastic arm 121 and a clamping head 122; the top of the edge magnetic structure 25 is bonded to the chassis 1, and the bottom surface of the magnetic circuit assembly 2 has a clamping groove 21 that cooperates with the clamping head 122, and the clamping groove 21 communicates with the outer peripheral wall of the magnetic circuit assembly 2.

[0034] To enable the clamping head 122 of the elastic clamping block 12 to be more smoothly clamped into the clamping groove 21, the inner side of the bottom of the clamping head 122 has a guiding surface 123, and the guiding surface 123 is an inclined surface or an arc surface.

[0035] The top surface of the clamping head 122 is a clamping surface 124 for abutting against the top surface of the clamping groove 21. When the clamping head 122 is in the clamping groove 21, the clamping surface 124 is in surface contact with the top surface of the clamping groove 21.

[0036] The outer side surface of the magnetic circuit assembly 2 is provided with an avoidance groove 22 for avoiding the elastic arm 121, and the bottom end of the avoidance groove 22 communicates with the clamping groove 21. It can be seen from this that the elastic clamping block 12 is arranged close to the outside of the sound generating unit, so that the influence of the setting of the avoidance groove 22 on the magnetic field strength of the sound generating unit can be reduced to a greater extent to ensure the performance of the sound generating unit.

[0037] The magnetic circuit assembly 2 includes a yoke 23 and a central magnetic structure 24 and an edge magnetic structure 25 respectively arranged on the yoke 23. A magnetic gap for the voice coil 32 to move is formed between the central magnetic structure 24 and the edge magnetic structure 25. The central magnetic structure 24 includes a central magnet and a central washer. The bottom surface of the central magnet is connected to the yoke 23, and the top surface of the central magnet is connected to the bottom surface of the central washer; in this embodiment, the edge magnetic structure 25 includes an edge magnet 251 and an edge washer 252. The bottom surface of the edge magnet 251 is adhesively connected to the yoke 23, and the top surface of the edge magnet 251 is adhesively connected to the edge washer 252 and the chassis 1 respectively.

[0038] Specifically, the basin frame 1 has a connecting flange 13 protruding inward, and the bottom surface of the connecting flange 13 is adhesively fixed to the top surface of the edge magnet 251, that is, the top surface of the edge magnet 251 can abut against the connecting flange 13, and the clamping surface 124 of the chuck 122 is in surface contact with the top surface of the card slot 21. Therefore, the cooperation between the chuck 122 and the connecting flange 13 realizes the clamping and fixing of the edge magnet 251, so that the magnetic circuit assembly 2 is effectively limited in the thickness direction.

[0039] To further improve the bonding force between the magnetic circuit assembly 2 and the basin frame 1 to a greater extent, in this embodiment, the outer side surface of the edge washer 252 is adhesively bonded to the connecting flange 13.

[0040] The depth of the card slot 21 is less than the thickness of the yoke 23. At this time, the card slot 21 is a blind slot provided on the yoke 23; or, the depth of the card slot 21 is equal to the thickness of the yoke 23. At this time, the top surface of the card slot 21 is the bottom surface of the edge magnet 251; or, the depth of the card slot 21 is greater than the thickness of the yoke 23 and less than the sum of the thickness of the yoke 23 and the thickness of the edge magnet 251. At this time, the card slot 21 extends to the edge magnet 251.

[0041] At least one pair of opposite sides of the main body 11 has the elastic chucks 12, and the elastic chucks 12 located on the opposite sides of the main body 11 are arranged oppositely, so that the magnetic circuit assembly 2 can be evenly stressed.

[0042] The basin frame 1 further has positioning posts 14 connected to the main body 11. The number of the positioning posts 14 is multiple, and the yoke 23 has positioning notches 231 that cooperate with the positioning posts 14. In this embodiment, the number of the positioning posts 14 is four, and the four positioning posts 14 are arranged in a rectangular frame shape. The positioning notches 231 are located at the corners of the yoke 23. Preferably, the wall surfaces of the positioning notches 231 are adhesively fixed to the wall surfaces of the positioning posts 14, which can further improve the bonding force between the basin frame 1 and the magnetic circuit assembly 2, thereby improving the structural stability of the sound generating unit.

[0043] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Sound generating unit, characterized in that: including a basin stand, the basin stand includes a connected main body and an elastic clamping block, the main body is in a ring frame shape, and the elastic clamping block includes a connected elastic arm and a clamping head; a magnetic circuit assembly, the magnetic circuit assembly includes a yoke and a side magnetic structure provided on the yoke, the top of the side magnetic structure is bonded to the basin stand, and the bottom surface of the magnetic circuit assembly has a clamping groove that cooperates with the clamping head, and the clamping groove communicates with the outer peripheral wall of the magnetic circuit assembly.

2. The sound generating unit according to claim 1, wherein: The elastic clamping block and the main body are an integrally injection-molded integral structure.

3. The sound generating unit according to claim 1, characterized in that: The inner side of the bottom of the clamping head has a guiding surface, and the guiding surface is an inclined surface or a curved surface; the top surface of the clamping head is a clamping surface for abutting against the top surface of the clamping groove.

4. The sound generating unit according to claim 1, characterized in that: An avoidance groove for avoiding the elastic arm is provided on the outer side surface of the magnetic circuit assembly, and the bottom end of the avoidance groove communicates with the clamping groove.

5. The sound generating unit according to claim 1, wherein: The side magnetic structure includes a side magnetic steel and a side washer, the bottom surface of the side magnetic steel is adhesively connected to the yoke, and the top surface of the side magnetic steel is adhesively connected to the side washer and the basin stand respectively.

6. The sound generating unit according to claim 5, characterized in that: The basin stand has a connecting flange protruding inward, and the bottom surface of the connecting flange is adhesively fixed to the top surface of the side magnetic steel.

7. The sound generating unit according to claim 6, characterized in that: The outer side surface of the side washer is adhesively connected to the connecting flange.

8. The sound generating unit according to claim 5, wherein: The depth of the clamping groove is less than the thickness of the yoke; or, the depth of the clamping groove is equal to the thickness of the yoke; or, the depth of the clamping groove is greater than the thickness of the yoke and less than the sum of the thickness of the yoke and the thickness of the side magnetic steel.

9. The sound generating unit according to claim 1, wherein: At least one pair of opposite sides of the main body has the elastic clamping blocks, and the elastic clamping blocks located on the opposite sides of the main body are arranged oppositely.

10. The sound generating unit according to claim 9, wherein: The basin stand also has positioning columns connected to the main body, the number of the positioning columns is multiple, and the yoke has positioning notches that cooperate with the positioning columns.

Images