Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a vibration assembly, a magnetic circuit assembly and a shaping support chip, and is characterized in that the vibration assembly comprises a diaphragm assembly and a voice coil which are connected; the magnetic circuit assembly comprises a yoke and a center magnetic structure arranged on the yoke, the center magnetic structure is in an annular frame shape, a boss is arranged on the yoke and located in a hollow area of the center magnetic structure, and a through hole is formed in the boss; the shaping support chip comprises an extension part, an inner mounting part, a deformation part and an outer mounting part which are connected in sequence, the inner mounting part is fixedly connected with the boss, the outer mounting part is fixedly connected with the diaphragm assembly, one end, far away from the inner mounting part, of the extension part extends out through the through hole, and an area, exposed out of the yoke, of the extension part is provided with an outer conduction part; the outer installation part is provided with an inner conduction part which is conducted with the voice coil, and the inner conduction part is electrically connected with the outer conduction part. The sound production unit is novel in structure and high in production yield, and the structure of the sound production unit is simplified, so that the sound production unit is more convenient to produce and assemble, and the manufacturing efficiency of the sound production unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly to a sounding unit. Background Art

[0002] In order to make full use of the internal space of the sounding unit and enable the side magnetic structure to have a larger volume, and at the same time, reduce the risk of the voice coil lead wire breaking, some sounding units adopt a voice coil inner conduction structure. However, for the sounding unit with this structure, in addition to the shaping support piece, a conductive piece for conducting the shaping support piece and an external power supply needs to be additionally provided, which not only makes the assembly process of the sounding unit complicated, but also easily causes poor welding between the shaping support piece and the conductive piece, resulting in the sounding unit being unable to work. Content of the Utility Model

[0003] The technical problem solved by the utility model is to provide a sounding unit with simple assembly and high production yield.

[0004] In order to solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, comprising:

[0005] A vibration assembly, the vibration assembly includes a diaphragm assembly and a voice coil connected to each other;

[0006] A magnetic circuit assembly, the magnetic circuit assembly includes a yoke and a central magnetic structure provided on the yoke, the central magnetic structure is in a ring frame shape, a boss is provided on the yoke, the boss is located in the hollow area of the central magnetic structure, and a through hole is provided on the boss;

[0007] A shaping support piece, the shaping support piece includes a protruding part, an inner installation part, a deformation part and an outer installation part connected in sequence, the inner installation part is fixedly connected to the boss, the outer installation part is fixedly connected to the diaphragm assembly, one end of the protruding part away from the inner installation part extends out through the through hole, an external conduction part is provided in the area where the protruding part is exposed outside the yoke, an internal conduction part for conducting with the voice coil is provided on the outer installation part, and the internal conduction part is electrically connected to the external conduction part.

[0008] In one embodiment, the outer installation part includes a first plate part, a lifting part and a second plate part connected in sequence, the second plate part is fixed on the diaphragm assembly, the internal conduction part is provided on the second plate part, and the first plate part connects the deformation part.

[0009] In one embodiment, the diaphragm assembly includes a skeleton and a sounding film connected to the skeleton, the voice coil and the second plate part are respectively fixedly connected to the skeleton, the sounding film surrounds the skeleton, and the skeleton has a support arm extending in the direction close to the yoke, and the support arm connects the first plate part.

[0010] In one embodiment, the protruding portion includes a descending portion and a fixing portion connected to each other. The protruding portion is integrally in an L shape. The descending portion passes through the through hole, and the fixing portion is exposed outside the yoke and fixedly connected to the yoke.

[0011] In one embodiment, an avoidance groove for avoiding the fixing portion is provided on the bottom surface of the yoke.

[0012] In one embodiment, a wiring groove communicating the avoidance groove with the peripheral wall of the yoke is provided on the bottom surface of the yoke.

[0013] In one embodiment, the thickness of the fixing portion is less than the depth of the avoidance groove.

[0014] In one embodiment, deformation portions are respectively connected to both sides of the inner installation portion.

[0015] In one embodiment, the shaping support piece is an axisymmetric structure.

[0016] In one embodiment, the convex platform is a hollow convex structure formed by stamping a partial area of the yoke.

[0017] The beneficial effects of the present utility model are as follows: The structure of the present sounding unit is novel. Compared with the existing sounding units, the setting of the conductive member is cancelled, and the external power supply does not need to be transferred through the conductive member, which is beneficial to improving the production yield. Moreover, the structure of the sounding unit is simplified, making the sounding unit more convenient for production and assembly, which is beneficial to improving the manufacturing efficiency of the sounding unit and reducing the manufacturing cost of the sounding unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0019] Figure 1 is an exploded view of the sounding unit according to Embodiment 1 of the present utility model;

[0020] Figure 2 is a cross-sectional view of the sounding unit according to Embodiment 1 of the present utility model Figure 1 ;

[0021] Figure 3 is a cross-sectional view of the sounding unit according to Embodiment 1 of the present utility model Figure 2 ;

[0022] Figure 4 is a schematic structural diagram of the overall structure of the sounding unit according to Embodiment 1 of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of a partial structure of the sound - generating unit according to the first embodiment of the present utility model.

[0024] Explanation of the reference numerals in the attached drawings:

[0025] 1. Basin frame;

[0026] 2. Diaphragm assembly; 21. Sound film; 22. Skeleton; 221. Support arm; 23. Cover plate;

[0027] 3. Voice coil;

[0028] 4. Magnetic circuit assembly; 41. Yoke; 411. Avoidance groove; 412. Wiring groove; 42. Central magnetic structure; 43. Edge magnetic structure; 44. Boss; 441. Through - hole;

[0029] 5. Shaping support piece; 51. Extension part; 511. Descending part; 512. Fixing part; 52. Inner installation part; 53. Deformation part; 54. Outer installation part; 541. First plate part; 542. Lifting part; 543. Second plate part. Detailed implementation manners

[0030] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the attached drawings.

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached 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 belong to the scope of protection of the present utility model.

[0032] 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, 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 attached drawings. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. 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", "second" may explicitly or implicitly include at least one such feature.

[0034] In addition, the meaning of "and / or" as used throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution of "A", or the solution of "B", or the solution that satisfies both "A" and "B" simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0035] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall 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.

[0036] Embodiment 1

[0037] Please refer to Figures 1 to 5 , Embodiment 1 of this utility model is as follows: The sound generating unit includes a chassis 1, a vibration assembly, a magnetic circuit assembly 4, and a shaping support piece 5. The vibration assembly includes a diaphragm assembly 2 and a voice coil 3 connected to each other. The diaphragm assembly 2 is connected to the chassis 1; the magnetic circuit assembly 4 is connected to the chassis 1. The magnetic circuit assembly 4 includes a yoke 41, a central magnetic structure 42 and an edge magnetic structure 43 respectively provided on the yoke 41. There is a voice coil gap for the voice coil 3 to move between the central magnetic structure 42 and the edge magnetic structure 43. The central magnetic structure 42 is in the shape of a ring frame. A boss 44 is provided on the yoke 41, and the boss 44 is located in the hollow area of the central magnetic structure 42. A through hole 441 is provided on the boss 44;

[0038] The shaping support piece 5 includes an extending portion 51, an inner mounting portion 52, a deformation portion 53, and an outer mounting portion 54 connected in sequence. The inner mounting portion 52 is fixedly connected to the boss 44, the outer mounting portion 54 is fixedly connected to the diaphragm assembly 2, one end of the extending portion 51 away from the inner mounting portion 52 extends out through the through hole 441, an outer conduction portion is provided in the area where the extending portion 51 is exposed outside the yoke 41, an inner conduction portion electrically connected to the voice coil 3 is provided on the outer mounting portion 54, and the inner conduction portion is electrically connected to the outer conduction portion.

[0039] The outer mounting portion 54 includes a first plate portion 541, a lifting portion 542, and a second plate portion 543 connected in sequence. The second plate portion 543 is fixed on the diaphragm assembly 2, the inner conduction portion is provided on the second plate portion 543, and the first plate portion 541 is connected to the deformation portion 53.

[0040] On both sides of the inner mounting portion 52, the deformation portions 53 are respectively connected. Preferably, the shaping support piece 5 is an axisymmetric structure, so that the center of gravity of the shaping support piece 5 is balanced.

[0041] The diaphragm assembly 2 includes a skeleton 22 and a sounding film 21 connected to the skeleton 22. The outer edge of the sounding film 21 is connected to the chassis 1. The voice coil 3 and the second plate portion 543 are respectively fixedly connected to the skeleton 22. The sounding film 21 is disposed around the skeleton 22. The skeleton 22 has a support arm 221 extending in the direction close to the yoke 41. The support arm 221 is connected to the first plate portion 541. To improve the structural strength of the support arm 221 and reduce the risk of deformation of the support arm 221, in this embodiment, concave ribs are provided on the support arm 221.

[0042] In this embodiment, a window is provided on the skeleton 22. A pair of opposite sides of the window are respectively connected to the support arms 221. The two support arms 221 are respectively connected to the two outer mounting portions 54. The sounding unit further includes a cover plate 23 provided on the skeleton 22. The cover plate 23 covers the window to close the window.

[0043] The protruding portion 51 includes a connected descending portion 511 and a fixing portion 512. The protruding portion 51 is integrally L-shaped. The descending portion 511 passes through the through hole 441. The fixing portion 512 is exposed outside the yoke 41 and is fixedly connected to the yoke 41. The external conduction portion is located on the fixing portion 512.

[0044] To facilitate the positioning and installation of the fixing portion 512, a relief groove 411 for avoiding the fixing portion 512 is provided on the bottom surface of the yoke 41. To prevent the presence of the fixing portion 512 from increasing the overall thickness of the sounding unit, the thickness of the fixing portion 512 is less than the depth of the relief groove 411. In other embodiments, it is also possible that the thickness of the fixing portion 512 is equal to or greater than the depth of the relief groove 411.

[0045] To ensure the thinness and lightness of the sounding unit, a wiring groove 412 communicating the relief groove 411 with the peripheral wall of the yoke 41 is provided on the bottom surface of the yoke 41. The wiring groove 412 is used for arranging the wiring connecting the external power supply and the external conduction portion.

[0046] The boss 44 is a hollow convex structure formed by stamping a partial area of the yoke 41. This can facilitate the processing and forming of the boss 44. In other embodiments, the boss 44 and the yoke 41 can also be a split structure fixedly connected by bonding, welding or other connection methods.

[0047] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. Sound generating unit, characterized in that: including a vibration component, the vibration component including a vibration film component and a voice coil connected to each other; a magnetic circuit component, the magnetic circuit component including a yoke and a central magnetic structure provided on the yoke, the central magnetic structure being in a ring frame shape, a boss being provided on the yoke, the boss being located in a hollow region of the central magnetic structure, and a through hole being provided on the boss; a shaping support piece, the shaping support piece including an extending part, an inner mounting part, a deformation part and an outer mounting part connected in sequence, the inner mounting part being fixedly connected to the boss, the outer mounting part being fixedly connected to the vibration film component, one end of the extending part far from the inner mounting part extending out through the through hole, an outer conduction part being provided in a region where the extending part is exposed outside the yoke, an inner conduction part for conducting with the voice coil being provided on the outer mounting part, and the inner conduction part being electrically connected to the outer conduction part.

2. The sound generating unit according to claim 1, wherein: The outer mounting part includes a first plate part, a lifting part and a second plate part connected in sequence, the second plate part being fixed on the vibration film component, the inner conduction part being provided on the second plate part, and the first plate part connecting the deformation part.

3. The sound generating unit according to claim 2, wherein: The vibration film component includes a skeleton and a sounding film connecting the skeleton, the voice coil and the second plate part being respectively fixedly connected to the skeleton, the sounding film surrounding the skeleton, and the skeleton having a support arm extending in a direction close to the yoke, and the support arm connecting the first plate part.

4. The sound generating unit according to claim 1, wherein: The extending part includes a descending part and a fixing part connected to each other, the extending part being in an L shape as a whole, the descending part passing through the through hole, and the fixing part being exposed outside the yoke and fixedly connected to the yoke.

5. The sound generating unit according to claim 4, wherein: A avoiding groove for avoiding the fixing part is provided on the bottom surface of the yoke.

6. The sound generating unit according to claim 5, characterized in that: A wiring groove communicating the avoiding groove with the peripheral wall of the yoke is provided on the bottom surface of the yoke.

7. The sound generating unit according to claim 5, wherein: The thickness of the fixing part is less than the depth of the avoiding groove.

8. The sound generating unit according to claim 1, wherein: The deformation parts are respectively connected to both sides of the inner mounting part.

9. The sound generating unit according to claim 8, wherein: The shaping support piece is an axisymmetric structure.

10. The sound generating unit according to claim 1, wherein: The boss is a hollow convex structure formed by stamping a partial area of the yoke.

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