Magnetic circuit assembly, loudspeaker, earphone and sound box

Abstract

The utility model relates to a magnetic circuit assembly, a loudspeaker, an earphone and a sound box, and relates to the technical field of horns, the magnetic circuit assembly comprises a basin stand, a tuning net and a circuit board, one side of the basin stand is provided with a cavity, the other side of the basin stand is provided with a tuning hole communicated with the cavity, the tuning net is bonded to the side, provided with the tuning hole, of the basin stand, and the tuning net covers the tuning hole. And the circuit board is adhered to one side of the tuning net back to the basin stand. The tuning net is arranged between the basin stand and the circuit board, and the circuit board is bonded on the tuning net, so that the connection of the circuit board on the basin stand is indirectly realized. Compared with the background technology, the tuning net does not need to be additionally provided with an avoiding hole for avoiding the circuit board, so that the positioning difficulty of the tuning net is reduced when the magnetic circuit assembly is assembled, and the bonding efficiency of the tuning net is improved. In addition, the bonding area of the circuit board is not affected by the tuning holes, thereby facilitating the increase of the bonding area of the circuit board, and finally effectively improving the fixing stability of the tuning net and the circuit board on the basin stand.

Description

Technical Field

[0001] The present application relates to the technical field of loudspeakers, and in particular to a magnetic circuit assembly, a loudspeaker, an earphone, and a sound box. Background Art

[0002] A related art speaker includes a magnetic circuit assembly comprising a frame, a circuit board, and a tuning net, each of which is bonded to the frame. In this related art, the circuit board is directly bonded to the frame in an arc shape, and the tuning net requires a clearance hole of the same shape as the circuit board to allow the tuning net to avoid the circuit board.

[0003] The above-mentioned related technologies have the following shortcomings in specific applications: Because the tuning net requires a clearance hole of the same shape as the circuit board, the circuit board must be aligned with the clearance hole when bonding the tuning net to the tuning net, resulting in low installation efficiency. The placement of the tuning holes in the basin frame reduces the bonding area and bonding strength between the circuit board and the basin frame, making it easy for the circuit board to fall off the basin frame. Utility Model Content

[0004] A first aspect of the present application is to provide a magnetic circuit assembly to solve the technical problems in the related art of low installation efficiency of the magnetic circuit assembly and easy detachment of the circuit board from the basin frame.

[0005] In order to solve the above technical problems, a technical solution adopted in this application is to provide a magnetic circuit assembly, which includes:

[0006] A basin frame, wherein a concave cavity is provided on one side of the basin frame, and a tuning hole communicating with the concave cavity is provided on the other side of the basin frame;

[0007] A tuning net is bonded to a side of the basin frame where the tuning hole is provided, and the tuning net covers the tuning hole;

[0008] A circuit board is bonded to a side of the tuning net facing away from the basin frame.

[0009] As an embodiment, the basin frame is provided with at least two tuning holes spaced apart along the circumference;

[0010] The tuning net is an annular structure, and the tuning net covers the at least two tuning holes.

[0011] As an embodiment, the basin frame is provided with an annular surface and a boss on one side of the tuning net, the boss is protruding from the inner side of the annular surface, and the tuning hole is provided on the annular surface.

[0012] As an embodiment, there is a distance between the inner side wall of the tuning net and the outer side wall of the boss.

[0013] As an embodiment, the distance between the inner side wall of the tuning mesh and the outer side wall of the boss is 0.1 mm-0.3 mm.

[0014] As an embodiment, the tuning net has an inner circle area and an outer circle area located outside the inner circle area, and the outer circle area covers the at least two tuning holes;

[0015] The circuit board includes an annular substrate, the outer diameter of the annular substrate is smaller than the outer diameter of the tuning net, and the annular substrate is bonded to the inner ring area.

[0016] As an embodiment, the circuit board further includes at least two solder pads spaced apart and protruding from the outer periphery of the annular substrate, and the orthographic projection of the solder pads on the outer ring area is staggered with the orthographic projection of the tuning hole on the outer ring area.

[0017] As an embodiment, the circuit board is bonded to the tuning net by moisture-curing UV adhesive.

[0018] A second aspect of the present application is to provide a speaker, comprising:

[0019] The magnetic circuit assembly as described in any one of the above items;

[0020] The vibration component is connected to the basin frame and is used for vibrating and making sounds under the drive of the magnetic circuit component.

[0021] A third aspect of the present application is to provide a headset or a speaker, wherein the speaker includes the speaker described above.

[0022] The beneficial effects of the present application are as follows: by placing the tuning net between the basin frame and the circuit board, the circuit board is bonded to the tuning net, thereby indirectly achieving the connection of the circuit board to the basin frame. Compared with the background art of directly connecting the circuit board to the basin frame, the tuning net of the present application does not need to have additional avoidance holes for avoiding the circuit board, thereby reducing the difficulty of positioning the tuning net when assembling the magnetic circuit assembly and improving the bonding efficiency of the tuning net. At the same time, the bonding area between the tuning net and the basin frame is increased. In addition, the bonding area of the circuit board is not affected by the tuning holes, which is conducive to increasing the bonding area of the circuit board, and ultimately effectively increasing the stability of the tuning net and the circuit board fixed on the basin frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0024] Figure 1 1 is a schematic diagram of the three-dimensional structure of the magnetic circuit assembly provided in an embodiment of the present application;

[0025] Figure 2 yes Figure 1 Schematic diagram of the exploded three-dimensional structure of the magnetic circuit assembly;

[0026] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the basin stand.

[0027] Explanation of the accompanying reference numerals: 100, basin frame; 101, annular surface; 102, boss; 103, cavity; 104, tuning hole; 110, tuning net; 120, circuit board; 121, annular substrate; 122, pad. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, 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 number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] See also Figure 1-Figure 3 As shown, the first aspect of the present application is to provide a magnetic circuit assembly, which includes a basin frame 100, a tuning net 110 and a circuit board 120.

[0032] A concave cavity 103 is provided on one side of the basin frame 100 , and a tuning hole 104 communicating with the concave cavity 103 is provided on the other side of the basin frame 100 .

[0033] The tuning net 110 is bonded to the side of the basin frame 100 where the tuning hole 104 is provided, and the tuning net 110 covers the tuning hole 104. Since the tuning net 110 covers the tuning hole 104, the dust-proof effect of the tuning net 110 on the position of the tuning hole 104 on the basin frame 100 is increased, and the technical problem of debris falling into the tuning hole 104 and generating noise during the production operation is effectively prevented.

[0034] The circuit board 120 is bonded to the side of the tuning net 110 facing away from the basin frame 100 . By bonding the circuit board 120 to the tuning net 110 , the circuit board 120 is indirectly connected to the basin frame 100 .

[0035] In the related art prior to this application, the circuit board 120 and the tuning mesh 110 were separately bonded to the basin frame 100, and the tuning mesh 110 had a clearance hole for the circuit board 120. Therefore, during assembly, the clearance hole on the tuning mesh 110 needed to be aligned with the circuit board 120 so that the circuit board 120 fell into the clearance hole. In this technical solution, the need to align the tuning mesh 110 and the circuit board 120 before connecting and installing them during assembly reduced installation efficiency.

[0036] In the embodiment of the present application, since the circuit board 120 is adhered to the tuning mesh 110 and thus indirectly installed on the basin frame 100, there is no need to open an avoidance hole on the tuning mesh 110 for avoiding the circuit board 120, which solves the technical problem of needing to align the tuning mesh 110 and the circuit board 120 before installation, thereby improving installation efficiency.

[0037] The concave cavity 103 of the basin frame 100 can be provided with tuning holes 104 of different shapes and sizes according to the requirements of acoustic performance, so as to adjust the sound damping and thereby reach a suitable frequency when the basin frame 100 vibrates. The tuning holes 104 can be holes in shapes such as arc holes, round holes and square holes.

[0038] As an implementation manner, the opening area of the tuning hole 104 is in the range of 400ml-500ml.

[0039] See also Figure 2As shown, as an embodiment, the basin frame 100 is provided with at least two tuning holes 104 spaced apart along the circumferential direction, the tuning net 110 is a ring-shaped structure, and the tuning net 110 covers at least two tuning holes 104. The tuning net 110 is set to be ring-shaped so that the tuning net 110 can cover the tuning holes 104 after being bonded to the basin frame 100.

[0040] As an embodiment, the basin frame 100 is provided with a tuning net 110 on one side thereof, and is provided with an annular surface 101 and a boss 102. The boss 102 is protruded from the inner side of the annular surface 101, and the tuning hole 104 is provided on the annular surface 101. The boss 102 is used to enhance the stability of the vibration component connected to the magnetic circuit component and prevent the vibration component from deviating from the axis of the magnetic circuit component to improve the sound quality.

[0041] As an embodiment, there is a gap between the inner wall of the tuning net 110 and the outer wall of the boss 102, which makes it easier to prevent the tuning net 110 from adhering to the outer wall of the boss 102 when it is adhered to the basin frame 100, thereby improving the convenience of installation.

[0042] As an embodiment, the distance between the inner wall of the tuning mesh 110 and the outer wall of the boss 102 is 0.1 mm-0.3 mm.

[0043] As an embodiment, the tuning mesh 110 has an inner ring area and an outer ring area located outside the inner ring area, and the outer ring area covers at least two tuning holes 104 .

[0044] The circuit board 120 includes an annular substrate 121 , the outer diameter of the annular substrate 121 is smaller than the outer diameter of the tuning mesh 110 , the annular substrate 121 is bonded to the inner circle area, and the annular substrate 121 is bonded to the tuning mesh 110 as a whole, thereby improving the bonding strength between the annular substrate 121 and the tuning mesh 110 .

[0045] In related technologies prior to the present invention, the circuit board 120 is typically configured as an arc-shaped structure. Compared to the existing arc-shaped structures, the annular base plate 121 in the present invention effectively increases the bonding area between the circuit board 120 and the tuning mesh 110, improving the bonding strength between the circuit board 120 and the tuning mesh 110, thereby enhancing the stability of the circuit board 120 installation.

[0046] In one embodiment, the circuit board 120 further includes at least two spaced solder pads 122 protruding from the outer circumference of the annular base plate 121. The orthographic projections of the solder pads 122 on the outer ring area are offset from the orthographic projections of the tuning holes 104 on the outer ring area. The provision of the solder pads 122 further increases the bonding area between the circuit board 120 and the tuning mesh 110, thereby increasing the bonding strength of the circuit board 120 on the tuning mesh 110 and preventing the circuit board 120 from falling off the tuning mesh 110. Because the orthographic projections of the solder pads 122 on the outer ring area are offset from the orthographic projections of the tuning holes 104 on the outer ring area, the solder pads 122 adhered to the tuning mesh 110 do not overlap the tuning holes 104. This improves the bonding strength between the circuit board 120 and the tuning mesh 110 while reducing the impact on sound quality caused by obstruction of the tuning holes 104.

[0047] As an embodiment, the pads 122 of the circuit board 120 are gold-plated to prevent oxidation during use. The gold-plated pads 122 can be directly electrically connected to pins, eliminating the need for solder joints on the pads 122, reducing the soldering process and improving the convenience of processing the circuit board 120.

[0048] As an embodiment, the magnetic circuit assembly also includes a spring washer arranged in the cavity 103 and a magnet arranged on the boss 102. The spring washer, the boss 102 and the magnet constitute a driving part of the magnetic circuit assembly. The spring washer and the magnet constitute a magnetic circuit, so that the magnetic circuit assembly can drive the vibration assembly to vibrate. The magnetic circuit assembly drives the vibration part composed of components such as the sound membrane and the voice coil to vibrate and make sound through the driving part.

[0049] In one embodiment, the circuit board 120 is bonded to the tuning mesh 110 using moisture-curing UV adhesive. Conventional glue is commonly used to bond the circuit board 120 to the tuning mesh 110. However, conventional glue suffers from poor bonding strength, high-temperature resistance, and long drying times. Moisture-curing UV adhesive dries quickly under UV light and hardens with increasing drying time. Furthermore, vapor-curing UV adhesive is less likely to dissolve or deform at high temperatures, thereby improving the bonding strength between the circuit board 120 and the tuning mesh 110.

[0050] A second aspect of the present application is to provide a loudspeaker, which includes a magnetic circuit component and a vibration component as described above. The vibration component is connected to the basin frame 100, and the vibration component is used to vibrate and produce sound under the drive of the magnetic circuit component.

[0051] The third aspect of the present application is to provide a headset or speaker, the speaker includes a speaker as described above, wherein the speaker includes a Bluetooth speaker, a desktop speaker, a wireless speaker, a car speaker, a waterproof speaker, etc., and the headset includes a Bluetooth headset, a sports headset, a bone conduction headset and a smart headset, etc.

[0052] In summary, by placing the tuning mesh 110 between the basin frame 100 and the circuit board 120, the circuit board 120 is bonded to the tuning mesh 110, thereby indirectly achieving the connection of the circuit board 120 to the basin frame 100. Compared to the background art in which the circuit board 120 is directly connected to the basin frame 100, the tuning mesh 110 of the present application does not require additional avoidance holes for accommodating the circuit board 120, thereby reducing the difficulty of positioning the tuning mesh 110 during assembly of the magnetic circuit assembly and improving the bonding efficiency of the tuning mesh 110. At the same time, the bonding area between the tuning mesh 110 and the basin frame 100 is increased. In addition, the bonding area of the circuit board 120 is not affected by the tuning holes 104, which is conducive to increasing the bonding area of the circuit board 120, and ultimately effectively increasing the stability of the tuning mesh 110 and the circuit board 120 fixed to the basin frame 100.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A magnetic circuit component, characterized in that: The magnetic circuit assembly comprises: A basin frame (100), wherein a concave cavity (103) is provided on one side of the basin frame (100), and a tuning hole (104) communicating with the concave cavity (103) is provided on the other side of the basin frame (100); a tuning net (110), the tuning net (110) being bonded to a side of the basin frame (100) where the tuning hole (104) is provided, and the tuning net (110) covering the tuning hole (104); A circuit board (120) is bonded to a side of the tuning net (110) facing away from the basin frame (100).

2. The magnetic circuit assembly according to claim 1, characterized in that The basin frame (100) is provided with at least two tuning holes (104) distributed at intervals along the circumference; The tuning net (110) is a ring-shaped structure, and the tuning net (110) covers the at least two tuning holes (104).

3. The magnetic circuit assembly according to claim 1, wherein: The basin frame (100) is provided with a ring surface (101) and a boss (102) on one side of the tuning net (110), the boss (102) is convexly arranged on the inner side of the ring surface (101), and the tuning hole (104) is provided on the ring surface (101).

4. The magnetic circuit assembly according to claim 3, characterized in that There is a distance between the inner side wall of the tuning net (110) and the outer side wall of the boss (102).

5. The magnetic circuit assembly according to claim 4, characterized in that The distance between the inner side wall of the tuning net (110) and the outer side wall of the boss (102) is 0.1 mm to 0.3 mm.

6. The magnetic circuit assembly according to claim 2, characterized in that The tuning net (110) has an inner ring area and an outer ring area located outside the inner ring area, and the outer ring area covers the at least two tuning holes (104); The circuit board (120) comprises an annular substrate (121), the outer diameter of the annular substrate (121) is smaller than the outer diameter of the tuning net (110), and the annular substrate (121) is bonded to the inner ring area.

7. The magnetic circuit assembly according to claim 6, characterized in that The circuit board (120) further comprises at least two solder pads (122) spaced apart and protruding from the outer periphery of the annular substrate (121), wherein the orthographic projections of the solder pads (122) on the outer ring area and the orthographic projections of the tuning holes (104) on the outer ring area are staggered.

8. The magnetic circuit assembly according to any one of claims 1 to 7, characterized in that: The circuit board (120) is bonded to the tuning net (110) by moisture-curing UV adhesive.

9. A speaker, characterized in that: The speaker comprises: The magnetic circuit assembly according to any one of claims 1 to 8; A vibration component is connected to the basin frame (100), and the vibration component is used to vibrate and generate sound under the drive of the magnetic circuit component.

10. A headset or speaker, characterized in that: The sound box includes the speaker as claimed in claim 9.

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