Base frame structure and loudspeaker

Abstract

The utility model relates to the field of loudspeakers, and provides a base frame structure and a loudspeaker, the base frame structure comprises a frame body and a washer, the middle part of the frame body is provided with a through hole, two opposite sides of the frame body are provided with edge magnetic grooves, and the frame body is provided with cut-off grooves on the outer side surfaces of the edge magnetic grooves; the number of the washers is two, the washers are arranged on the edge magnetic grooves, the washers and the edge magnetic grooves are integrally formed in an injection molding mode, and at least one fixing groove is formed in the outer side face of each washer. According to the technical scheme, the washer and the edge magnetic grooves in the frame body are subjected to integral injection molding, the shape of the washer is increased through the material belt so that the washer can be conveniently positioned and placed, and then the washer has an accurate matching position after integral injection molding, so that the assembling time can be saved, the problems existing in the assembling process can be avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of loudspeakers, in particular to a base frame structure and a loudspeaker. Background Art

[0002] The commonly referred to loudspeaker generally refers to a moving coil loudspeaker, and its working principle (physical principle) is similar to that of a traditional moving coil loudspeaker: a changing audio electrical signal is fed into the voice coil, and the voice coil is placed in the magnetic gap of a permanent magnet magnetic circuit. Driven by the changing electromagnetic field force (Lorentz force) generated by the changing current, the voice coil vibrates up and down, driving the vibrating diaphragm to drive the air back and forth to generate sound waves.

[0003] With the development of modern social technology, the styles of loudspeakers are also diverse. During the production process, the positioning and assembly of small loudspeakers (roughly the size of an adult's little finger, and of course, larger-sized loudspeakers also have one or more of the following problems) are relatively difficult. For example, during the installation between the edge magnet washer and the edge magnet groove, it is easy to occur offset, resulting in difficult assembly; or after bonding and then fixing the edge magnet washer, the amount of adhesive used for bonding needs to be precisely controlled, otherwise glue overflow will occur, adding other difficulties; or positioning and installation are carried out through holes and pins, but due to the small size, it is not easy to align and install. Thus, there is a situation where the assembly is relatively difficult, leading to problems of low production efficiency or quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a base frame structure and a loudspeaker, aiming to improve the relatively low production efficiency of existing loudspeakers.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions: A base frame structure, comprising:

[0006] A frame body, with a through hole provided in the middle thereof, edge magnet grooves provided on opposite sides of the frame body, and a cutting groove provided on the outer side surface of the frame body located outside the edge magnet grooves; and

[0007] Two washers, which are provided on the edge magnet grooves and integrally injection-molded with the edge magnet grooves, and at least one fixing groove is provided on the outer side surface of the washers.

[0008] Preferably, a number of stepped protrusions arranged at intervals and bump points connected to the strip are further provided on the outer side surface of the washers.

[0009] Preferably, a warped limiting piece is provided on the end surface of the washers.

[0010] Preferably, two limiting blocks are symmetrically provided on the bottom of the edge magnet grooves, one side of the two limiting blocks is aligned with the side surface of the through hole, and the edge magnet grooves form a flared structure or a necked-down structure;

[0011] An avoidance groove for avoiding the two limiting blocks is arranged on the inner side surface of the washer.

[0012] Preferably, a power connection piece formed by integral injection molding is arranged on the frame body.

[0013] Preferably, there are two fixing grooves, and the two fixing grooves are arranged at intervals on a stepped convex block; the fixing grooves are arranged to gradually narrow towards the opening direction.

[0014] A loudspeaker is further provided, including the base frame structure as described above.

[0015] After adopting the above technical solution, compared with the background art, the utility model has the following advantages:

[0016] 1. Integrally injection mold the washer and the edge magnetic groove on the frame body, increase the size of the washer by means of a strip, so as to facilitate positioning and placement, and then have an accurate fitting position after integral injection molding. In this way, the assembly time can be saved, and the problems existing in the assembly can also be avoided, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the base frame structure of the utility model;

[0018] Figure 2 is a schematic structural diagram of the washer of the base frame structure of the utility model from a first perspective;

[0019] Figure 3 is a schematic structural diagram of the washer of the base frame structure of the utility model from a second perspective;

[0020] Figure 4 is a schematic structural diagram of the washer of the base frame structure of the utility model on a strip;

[0021] Figure 5 is a schematic structural diagram of the loudspeaker of the utility model.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS:

[0023] 1. Loudspeaker; 2. Strip;

[0024] 10. Frame body; 101. Through hole; 102. Edge magnetic groove; 103. Cutting groove; 104. Limiting block;

[0025] 20. Washer; 201. Fixing groove; 202. Stepped convex block; 203. Convex point; 204. Limiting piece; 205. Avoidance groove;

[0026] 30. Power connection piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element of the present utility model must have a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0029] When an element is referred to as being "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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 communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, this embodiment provides a base frame structure, including a frame body 10 and a washer 20. A through hole 101 is provided in the middle of the frame body 10. Edge magnetic grooves 102 are provided on the opposite sides of the frame body 10. A cutting groove 103 is provided on the outer side surface of the frame body 10 at the position of the edge magnetic groove 102. There are two washers 20, and the washers 20 are arranged on the edge magnetic grooves 102 and integrally injection-molded with the edge magnetic grooves 102. At least one fixing groove 201 is provided on the outer side surface of the washer 20.

[0033] Specifically, when the injection molding process is adopted, there are two symmetrical washers 20 on the tape. The size of the washers 20 is increased by means of the tape for positioning and placement. After injection molding, the washer 20 can be accurately fixed in the frame 10. Then, the tape is cut at the position of the cutting groove 103. After removing the tape, the finished base frame structure can be obtained. In this way, the assembly time is saved, the problems in the assembly are avoided, and the production efficiency is improved.

[0034] Furthermore, the structure of the frame 10 can be formed in one step, that is, the structures of the through hole 101, the side magnetic groove 102 and the cutting groove 103 are injection molded. The through hole 101 is used for installing structures such as the voice coil, the main washer 20 and the diaphragm in the subsequent process. In this way, during the injection molding process of the frame 10, the installation of the washer 20 is completed, and the cutting groove 103 can perform the alignment and cutting of the tape to achieve an efficient cutting action while ensuring the production quality.

[0035] As Figure 2 and Figure 3 shown, on the outer side surface of the washer 20 in this embodiment, there are also a number of stepped protrusions 202 arranged at intervals, and bump points 203 connected to the tape. Through the design of the stepped protrusions 202, after injection molding, a retaining edge can be formed with the edge of the washer 20 for the fixed positioning of the washer 20. Moreover, the bump points 203 and the stepped protrusions 202 can be arranged staggeredly. In this way, there is injection molding material on the bump points 203 and injection molding material under the stepped protrusions 202 after injection molding, so that the washer 20 is fixed in the vertical direction, achieving the effect of injection molding and fixing the washer 20.

[0036] Furthermore, as Figure 2 and Figure 3 shown, on the end surface of the washer 20 in this embodiment, there is a raised limiting piece 204. The limiting piece 204 can be an arc-shaped piece or an inclined extension piece. During injection molding, the limiting piece 204 will be buried in the material of the frame 10 (i.e., embedded in the frame 10). In this way, the fixing strength of the washer 20 is improved, the separation of the washer 20 from the frame 10 is avoided, and the integrity and production quality are improved.

[0037] As Figure 1 and Figure 2 shown, in this embodiment, two limiting blocks 104 are symmetrically arranged on the bottom of the side magnetic groove 102. The two sides of the side magnetic groove 102 are designed to be conductive, that is, connected to the through hole 101 and conductive to the outside. One side of the two limiting blocks 104 is aligned with the side surface of the through hole 101, and the side magnetic groove 102 forms a flared structure or a necked-down structure; on the inner side surface of the washer 20, there is an avoidance groove 205 for avoiding the two limiting blocks 104.

[0038] Specifically, the design of the two limiting blocks 104 causes the end of the side magnetic groove 102 facing the inside of the through hole 101 to form a constriction, which can thus abut and limit the inner side of the washer 20. At the same time, it is also convenient for subsequent installation of the side magnet and limits the side magnet, improving the practicability.

[0039] As Figure 1 shown, in this embodiment, a power connection piece 30 is integrally injection-molded on the frame body 10. The power connection piece 30 can be a copper sheet. Through integral injection molding, the purpose of embedding the copper sheet can be achieved, and the conductive lines inside the frame body 10 can be flexibly arranged, improving the flexibility of the design.

[0040] As Figure 2 and Figure 3 shown, in this embodiment, there are two fixing grooves 201, and the two fixing grooves 201 are spaced apart on a stepped convex block 202; the fixing grooves 201 are gradually narrowed towards the opening direction. The design of multiple fixing grooves 201 can form multiple support points, which can improve the position of the fixing points. At the same time, the constriction design of the fixing grooves 201 can improve the stability in the horizontal direction, that is, prevent horizontal movement, thus improving the stability of the washer 20 after injection molding.

[0041] Embodiment 2

[0042] As Figure 5 shown, this embodiment provides a loudspeaker, including the base frame structure described in Embodiment 1. During the production of the loudspeaker 1, using the structure of the integrally injection-molded washer and the frame body for assembly can improve the production efficiency, and at the same time, it can also improve the production quality of the product and improve the practicability.

[0043] The above is only a specific and preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A base frame structure, characterized in that, Comprising: A frame body, which is provided with a through hole in the middle, side magnetic grooves are arranged on opposite sides of the frame body, and a cutting groove is arranged on the outer side surface of the frame body located outside the side magnetic grooves; and Washers, there are two of them, the washers are arranged on the side magnetic grooves and integrally injection molded with the side magnetic grooves, and at least one fixing groove is arranged on the outer side surface of the washers.

2. The base frame structure according to claim 1, characterized in that: A plurality of stepped bumps arranged at intervals and bump points connected to the strip are further arranged on the outer side surface of the washer.

3. The base frame structure according to claim 1 or 2, characterized in that: A raised limiting piece is arranged on the end surface of the washer.

4. The base frame structure according to claim 1, characterized in that: Two limiting blocks are symmetrically arranged on the bottom of the side magnetic groove, one side of the two limiting blocks is aligned with the side surface of the through hole, and the side magnetic groove forms a flared structure or a necked-down structure; An avoidance groove for avoiding the two limiting blocks is arranged on the inner side surface of the washer.

5. The base frame structure according to claim 1, wherein: A power connection piece integrally injection molded is arranged on the frame body.

6. The base frame structure according to claim 2, wherein: There are two fixing grooves, and the two fixing grooves are arranged at intervals on one of the stepped bumps; the fixing grooves are arranged to gradually narrow towards the opening direction.

7. A loudspeaker, characterized in that, Comprising the base frame structure according to any one of claims 1 to 6.

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