Loudspeaker structure capable of reducing welding difficulty

Abstract

The utility model provides a horn structure capable of reducing welding difficulty, and belongs to the field of horn structures. The horn structure capable of reducing welding difficulty comprises a support, a voice coil and a PCB, the voice coil is arranged on one side of the support, the voice coil is provided with a voice coil lead connected with the PCB, the front face, far away from the voice coil, of the PCB is provided with a welding spot used for welding the voice coil lead, and the welding spot is connected with the voice coil lead. The support and / or the PCB are / is provided with a leading-out channel for leading out the voice coil lead from the voice coil to the front surface of the PCB for welding. The beneficial effects of the utility model are that the voice coil lead is led out to the outside for welding, so that the welding difficulty is greatly reduced, and the welding efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to the field of horn structures, and particularly to a horn structure for reducing welding difficulty. Background Technique

[0002] The voice coil lead is one of the main components of the horn structure. Its main function is to electrically connect the voice coil to the PCB board for inputting audio signals. Then, the voice coil with the input audio signal can vibrate under the action of the magnetic field and push the vibration membrane connected thereto to move, and further push the surrounding air to vibrate and emit sound waves.

[0003] Currently, for micro speakers, for horns with conventional outer diameters such as Ф50mm, Ф40mm, Ф10mm, Ф8mm, Ф6mm, etc., there are the following two ways to fix the voice coil leads:

[0004] First, the lead is bent in an arc along the direction of the diaphragm pattern and bonded to the diaphragm with relatively soft glue. This method is currently the most used, and the operation difficulty is relatively simple. However, applying glue will affect the rigidity and weight of the diaphragm. The side of the diaphragm with the lead bonded and the side without the lead bonded are unbalanced in rigidity and weight, and will tilt during vibration, affecting the curve smoothness and high distortion of the speaker.

[0005] Second, for an internally welded speaker, the two leads of the voice coil are symmetrically separated and bent into an arc to weld the leads inside the speaker bracket. In this way, the leads will be located between the diaphragm and the speaker at a proper arc to avoid affecting the diaphragm. However, it is necessary to weld two leads inside the bracket. Due to the limited space inside the bracket, this makes soldering very difficult and requires more precise soldering equipment. At the same time, solder slag is inevitably splashed during the welding process and adheres inside the bracket to cause noise. Such disadvantages will not only affect the manufacturing efficiency and yield, but also be fatal in the current trend of making smaller and smaller horns. Content of the Utility Model

[0006] To solve the problems in the prior art, on the basis of the internally welded speaker, the utility model redesigns the circuit board and bracket structure of the horn, and provides an externally welded horn structure for reducing welding difficulty.

[0007] The horn structure for reducing welding difficulty of the utility model includes a bracket, a voice coil and a PCB board. Among them, the voice coil is arranged on one side of the bracket, the voice coil is provided with voice coil leads connected to the PCB board, the front side of the PCB board far from the voice coil is provided with solder joints for welding the voice coil leads, and the bracket and / or the PCB board is provided with a lead-out channel for leading the voice coil leads from the voice coil to the front side of the PCB board for welding.

[0008] Further, a suspension structure for suspending the voice coil lead is provided on the bracket.

[0009] Further, the suspension structure is arranged on the side of the bracket facing the voice coil.

[0010] Further, a positioning structure for positioning the suspension of the voice coil lead is further included.

[0011] In another improvement of the present utility model, the suspension structure is a limiting block arranged on the bracket to support the voice coil lead.

[0012] Further, the PCB board is an embedded type PCB board embedded in the bracket. The bracket is provided with a hollowed-out portion that fits the outer shape of the PCB board. The PCB board is installed in the hollowed-out portion, and the lead-out channel is a lead hole arranged on the PCB board.

[0013] In the second improvement of the present utility model, an installation groove for installing the PCB board is provided on the bracket. The PCB board is arranged in the installation groove, and the lead-out channel is lead holes respectively arranged at corresponding positions on the PCB board and the bracket.

[0014] In another improvement of the present utility model, the lead-out channel is a lead groove arranged on the side wall of the bracket and penetrating through the side wall.

[0015] Further, the back surface of the PCB board is fixed on the bracket, and a limiting groove corresponding to the position of the lead groove is provided on the PCB board.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The voice coil lead is led out through the lead-out channel and welded on the front surface of the PCB board. The welding space is not limited, and ordinary welding equipment can complete the welding, effectively reducing the cost and improving the welding efficiency. In addition, it also avoids the phenomenon of solder slag splashing during welding and sticking inside the bracket to cause noise.

[0017] By providing a suspension structure on the bracket to initially fix the two voice coil leads, the leads can be set with a suitable curvature between the diaphragm and the speaker before welding, thus retaining the advantages of the lead being suspended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the solutions in 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-described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1Schematic diagram of the structure of the first embodiment of the horn structure of the present utility model;

[0020] Figure 2 and Figure 3 Exploded structure schematic diagram of the first embodiment of the horn structure of the present utility model;

[0021] Figure 4 Schematic diagram of the PCB board structure;

[0022] Figure 5 Schematic diagram of the structure of the second embodiment of the horn structure of the present utility model;

[0023] Figure 6 Schematic diagram of the structure of the second embodiment of the horn structure of the present utility model from another perspective;

[0024] Figure 7 Exploded structure schematic diagram of the second embodiment of the horn structure of the present utility model;

[0025] Figure 8 Schematic diagram of the structure of the voice coil lead suspension of the second embodiment of the horn structure of the present utility model;

[0026] Figure 9 Schematic diagram of the structure of the third embodiment of the horn structure of the present utility model;

[0027] Figure 10 Schematic diagram of the structure of the third embodiment of the horn structure of the present utility model from another perspective. Detailed implementation manners

[0028] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0029] Referring to "embodiment" in the present utility model means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appearing at various positions in the description does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present utility model can be combined with other embodiments.

[0030] To enable those skilled in the art of this technology to better understand the solution of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] As Figures 1-10 shown, the horn structure of this utility model for reducing the welding difficulty includes a bracket 1, a voice coil 2, and a PCB board 4. Among them, the voice coil 2 is arranged on one side of the bracket 1. The voice coil 2 is provided with a voice coil lead 3 connected to the PCB board 4. On the front side of the PCB board 4 away from the voice coil 2, there is a soldering point 402 for soldering the voice coil lead 3. An extraction channel is provided on the bracket 1 and / or the PCB board 4 for the voice coil lead 3 to be led out from the voice coil 2 to the front side of the PCB board 4 for soldering.

[0032] In this example, the structure of the PCB board 4 is improved. The soldering point 402 for soldering the voice coil lead 3 is transferred from the back side to the front side of the PCB board, and preferably, the soldering point 402 is arranged near the extraction channel, which is convenient for wiring and soldering.

[0033] This utility model leads out the voice coil lead 3 through the extraction channel and solders it on the front side of the PCB board 4. The soldering space is not limited, and ordinary soldering equipment can complete it, effectively reducing the cost and improving the soldering efficiency. In addition, it also avoids the phenomenon of solder slag splashing during soldering and sticking inside the bracket to cause noise.

[0034] Preferably, in this example, a suspended structure for limiting the voice coil lead 3 is provided on the bracket 1, so that the voice coil lead 3 of this utility model can still retain the advantage of the lead being suspended in the existing internally soldered horn.

[0035] As Figures 1-4 shown, as an embodiment of this utility model, the horn structure in this example is a 40mm horn. The horn structure in this example includes a bracket 1, a magnetic circuit structure 6 arranged in the middle of the bracket, and a voice coil 2. It also includes a diaphragm 5 arranged at the front end of the bracket facing the voice coil 2 and a tuning paper 7 arranged at the rear end of the bracket. The PCB board bracket in this example is of an inlaid design.

[0036] In this example, the bracket 1 is provided with a hollowed-out portion 101 that fits the shape of the PCB board 4. The inner wall of the hollowed-out portion 101 is provided with a lap joint edge 102 that laps with the PCB board. Above the lap joint edge 102, there are also 4 clamping blocks 103. The PCB board 4 is placed on the lap joint edge 102 and then pressed and fixed by the clamping blocks 103 above. Since the bracket corresponding to the PCB board 4 in this example is a hollow structure, therefore, in this example, only a lead hole 401 needs to be opened on the PCB board 4 as the lead-out channel for the voice coil lead 3. And the number of solder joints 402 is two, and their positions are respectively set on the left and right sides of the lead hole 402. In this example, the power supply solder joint 403 is also modified to avoid interfering with the solder joint 402 of the voice coil lead 3 and affecting the function realization.

[0037] As Figure 3 shown, in this example, a suspension structure 10 for suspending the voice coil lead 3 is provided on both sides of the front end of the bracket 1 and the hollowed-out portion 101. The suspension structure 10 in this example is a limit groove that is lower than the surface of the bracket 1 and the mounting surface of the PCB board 4. The voice coil lead 3 is led out from the limit groove and laps on both sides of the hollowed-out portion 101 whose surface is higher than the limit groove, so that the voice coil lead 3 is suspended above the bottom of the limit groove.

[0038] In order to maintain the symmetrical structure of the voice coil lead 3 in this example, a positioning structure is also provided at the places where both sides of the hollowed-out portion 101 are in contact with the voice coil lead 3. The positioning structure in this example is lead fixing glue. On the back of the PCB board 4, after fixing the lead position with the lead fixing glue, welding is carried out on the front of the PCB board 4.

[0039] As Figures 5-8 shown, as the second embodiment of the present invention, the speaker structure in this example is a 6mm speaker structure. The speaker structure in this example includes a bracket 1, a magnetic circuit structure arranged in the bracket, and also includes a voice coil 2, a diaphragm 5, a diaphragm fixing ring 9 and a cover 8, and also includes a PCB board 4 arranged on the other side of the bracket 1. The magnetic circuit structure includes a T iron (inside the bracket, not shown in the figure), a magnet 602 sleeved on the T iron and a washer 601.

[0040] The bracket 1 in this example is a magnetic circuit encapsulation bracket. The lead-out channel in this example is a lead slot 101 arranged on the side wall of the bracket 1 and penetrating through the side wall. The back of the PCB board 4 is fixed on the bracket. There is a limit groove 404 on the PCB board corresponding to the position of the lead slot 101, so as to facilitate introducing the voice coil speaker 3 to the solder joint 402 on the front of the PCB board 4.

[0041] As Figure 8As shown, this example is different from the first embodiment. The suspended structure 10 in this example is a groove provided in the inner circle on the side of the bracket 1 facing the voice coil 2. When the voice coil lead 3 passes from the voice coil to the lead-out channel 101 on the periphery of the bracket 1, it overlaps above the groove to form a suspended setting.

[0042] The fixing structure in this example is normal-temperature glue or single-sided adhesive tape. The voice coil lead 4 is fixed on the fixing position 11 at the entrance of the lead-out channel 101 outside the groove. Then, the voice coil lead 3 is led out from the lead-out channel 101 and flipped to the front side of the PCB board 4 to achieve welding and fixing.

[0043] As Figure 9 and Figure 10 shown, as the third embodiment of the present invention, this example is a 10-mm speaker structure. The bracket 1 in this example is an iron basin bracket. The PCB board 4 is arranged in the installation groove on the back of the bracket 1. The lead-out channel is the lead hole 101 provided on the bracket 1 and the limit groove 404 provided on the PCB board 4. The two are connected to jointly form a lead-out channel for leading out the voice coil lead 3.

[0044] The suspended structure 10 in this example is a limit block 10 provided on the bracket 1 to support the voice coil lead 3. The fixing structure in this example is normal-temperature glue or single-sided adhesive tape provided at the limit block 10 or the entrance of the lead hole 101.

[0045] As can be seen from the above, the present invention solves the process problems of the existing inboard-welding speakers by leading out the voice coil lead 3 for external welding. By providing a suspended structure on the bracket to preliminarily fix the two voice coil leads, the leads can have a suitable arc between the diaphragm and the speaker before welding, thus retaining the advantages of the suspended leads.

[0046] The above-described specific embodiments are the preferred embodiments of the present invention, and do not limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific embodiment. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A speaker structure that reduces welding difficulty, characterized in that: The invention comprises a bracket, a voice coil and a PCB board, wherein the voice coil is arranged on one side of the bracket, the voice coil is provided with a voice coil lead connected to the PCB board, the front side of the PCB board away from the voice coil is provided with a soldering point for soldering the voice coil lead, and the bracket and / or the PCB board is provided with a lead-out channel for the voice coil lead to be led out from the voice coil to the front side of the PCB board for soldering.

2. The speaker structure with reduced welding difficulty according to claim 1, characterized in that: The bracket is provided with a suspension structure for suspending the voice coil lead.

3. The speaker structure with reduced welding difficulty according to claim 2, characterized in that: The suspended structure is arranged on a side of the bracket facing the voice coil.

4. The speaker structure with reduced welding difficulty according to claim 3, characterized in that: It also includes a positioning structure for positioning the voice coil lead wire in the air.

5. The speaker structure with reduced welding difficulty according to claim 3, characterized in that: The suspended structure is a limiting block arranged on the bracket and supporting the voice coil lead.

6. The speaker structure with reduced welding difficulty according to any one of claims 1 to 5, characterized in that: The PCB board is an embedded PCB board embedded in the bracket, the bracket is provided with a hollow part wedged with the outer shape of the PCB board, the PCB board is installed in the hollow part, and the lead-out channel is a lead hole set on the PCB board.

7. The speaker structure with reduced welding difficulty according to any one of claims 1 to 5, characterized in that: The bracket is provided with a mounting groove for mounting a PCB board, the PCB board is arranged in the mounting groove, and the lead-out channel is a lead-wire hole respectively arranged at corresponding positions of the PCB board and the bracket.

8. The speaker structure with reduced welding difficulty according to any one of claims 1 to 5, characterized in that: The lead-out channel is a lead-out groove arranged on the side wall of the bracket and penetrating the side wall.

9. The speaker structure with reduced welding difficulty according to claim 8, characterized in that: The back side of the PCB board is fixed on the bracket, and the PCB board is provided with a limiting groove corresponding to the position of the lead groove.

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