Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand and a yoke, the basin stand comprises a frame body, the frame body is provided with a positioning column, and one end of the positioning column far away from the frame body is provided with a hot melting wall and a jack; the yoke is provided with a pin matched with the jack; the basin frame and the yoke are connected in a hot melting mode through a hot melting wall, and the hot melting wall after hot melting covers at least part of exposed areas of the pins. The sound production unit is novel in structure, the positioning columns on the basin stand can well support the yoke, the jacks on the positioning columns are matched with the pins on the yoke to realize accurate positioning of the basin stand and the yoke, and the hot melting wall of the positioning columns can realize hot melting connection of the basin stand and the yoke, so that the bonding strength of the basin stand and the yoke is improved, and the sound production efficiency is improved. The risk of accidental separation of the frame and the yoke is reduced, and the structural stability of the sounding 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] The sounding unit includes a chassis and a vibration assembly and a magnetic circuit assembly respectively connected to the chassis. The magnetic circuit assembly includes a yoke. The chassis has positioning posts, and the yoke has positioning grooves that cooperate with the positioning posts. The cooperation of the positioning posts and the positioning grooves can enable the chassis and the yoke to achieve precise positioning. In the prior art, the positioning posts and the yoke are often adhesively fixed. However, the adhesive area between the yoke and the positioning posts is small. During the drop test of the sounding unit, the yoke and the chassis are likely to separate. That is to say, the existing sounding unit has the problem of unstable structure. Summary of the Utility Model

[0003] The technical problem solved by the utility model is to provide a sounding unit in which the yoke and the chassis are not easily separated.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, including:

[0005] A chassis, the chassis includes a frame body, and positioning posts are provided on the frame body. A hot melt wall and an insertion hole are provided at one end of the positioning post away from the frame body;

[0006] A yoke, the yoke has insertion feet that cooperate with the insertion holes;

[0007] The chassis and the yoke are hot melt connected through the hot melt wall, and the hot melt wall after hot melting covers at least a part of the exposed area of the insertion feet.

[0008] In one embodiment, the insertion hole is filled with glue.

[0009] In one embodiment, the end surface of the positioning post away from the frame body is adhesively connected to the yoke.

[0010] In one embodiment, the insertion feet are bent structures formed by bending a part of the area of the yoke.

[0011] In one embodiment, the yoke is rectangular, and the four corners of the yoke respectively have the insertion feet.

[0012] In one embodiment, a pressing groove is provided on the edge of the side of the yoke away from the frame body, and the hot melt wall forms a claw that extends into the pressing groove after hot melting.

[0013] In one embodiment, it further includes a side magnet and a side washer. The side washer and the chassis are an integrally formed structure by insert molding, and the side magnet is adhesively fixed to the side washer and the yoke respectively.

[0014] In one embodiment, the end of the yoke has a flange extending into the hollow area of the frame body.

[0015] The beneficial effects of the present utility model are as follows: The structure of the sound generating unit is novel. The positioning posts on the basin frame can well support the yoke. The cooperation between the jacks on the positioning posts and the pins on the yoke can achieve precise positioning of the basin frame and the yoke. The heat fusion wall of the positioning post can enable heat fusion connection between the basin frame and the yoke, thereby improving the bonding strength between the basin frame and the yoke, reducing the risk of accidental separation between the basin frame and the yoke, and being beneficial to enhancing the structural stability of the sound generating unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 description in 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, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 Structural schematic diagram of the sound generating unit in Embodiment 1 of the present utility model (when the heat fusion wall is not heat fused);

[0018] Figure 2 Partial exploded view of the sound generating unit in Embodiment 1 of the present utility model;

[0019] Figure 3 Structural schematic diagram of the sound generating unit in Embodiment 1 of the present utility model (after heat fusing the heat fusion wall).

[0020] Explanation of the reference numerals in the drawings:

[0021] 1. Basin frame; 11. Frame body; 12. Positioning post; 13. Heat fusion wall; 131. Hook; 14. Jack;

[0022] 2. Diaphragm assembly;

[0023] 3. Voice coil;

[0024] 4. Yoke; 41. Pin; 42. Groove; 43. Flange;

[0025] 5. Central magnetic structure;

[0026] 6. Edge magnetic structure; 61. Edge magnet; 62. Edge washer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0028] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] 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 positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0030] 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" and "second" may explicitly or implicitly include at least one such feature.

[0031] 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 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 protection scope required by the present utility model.

[0032] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "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 connection 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.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is as follows: a sound generating unit, including a chassis 1, a vibration assembly and a magnetic circuit assembly respectively connected to the chassis 1. The vibration assembly includes a diaphragm assembly 2 and a voice coil 3. The diaphragm assembly 2 connects the chassis 1 and the voice coil 3. The magnetic circuit assembly includes a yoke 4, a central magnetic structure 5 and an edge magnetic structure 6 respectively provided on the yoke 4. A magnetic gap for the voice coil 3 to move is formed between the central magnetic structure 5 and the edge magnetic structure 6.

[0035] The chassis 1 includes a frame body 11. Positioning posts 12 are provided on the frame body 11. A hot melt wall 13 and an insertion hole 14 are provided at one end of the positioning post 12 away from the frame body 11. The end face of the positioning post 12 away from the frame body 11 abuts against the yoke 4; the yoke 4 has a pin 41 that cooperates with the insertion hole 14; the chassis 1 and the yoke 4 are hot melt connected through the hot melt wall 13, and at least part of the exposed area of the pin 41 is covered by the hot melt wall 13 after hot melting.

[0036] To improve the connection stability between the chassis 1 and the yoke 4, optionally, the insertion hole 14 is filled with glue, and the pin 41 and the chassis 1 are adhesively connected, which undoubtedly increases the bonding area between the yoke 4 and the chassis 1.

[0037] Optionally, the end face of the positioning post 12 away from the frame body 11 is adhesively connected to the yoke 4, which can more greatly reduce the risk of accidental separation between the chassis 1 and the yoke 4.

[0038] The pin 41 is a bent structure formed by bending a part of the area of the yoke 4. In this embodiment, the yoke 4 is rectangular, and the four corners of the yoke 4 respectively have the pin 41. Correspondingly, the number of positioning posts 12 on the chassis 1 is four, and the four positioning posts 12 are connected to the four pins 41 in one-to-one correspondence.

[0039] To ensure the flatness of the exposed surface on the side of the yoke 4 of the sound generating unit, in this embodiment, a pressing groove 42 is provided on the edge of the side of the yoke 4 away from the frame body 11, and a claw 131 extending into the pressing groove 42 is formed after the hot melt wall 13 is hot melted.

[0040] The edge magnetic structure 6 includes an edge magnet 61 and an edge washer 62. The edge washer 62 and the chassis 1 are an integrally formed structure by insert molding, and the edge magnet 61 is adhesively fixed to the edge washer 62 and the yoke 4 respectively.

[0041] The central magnetic structure 5 includes a central magnet and a central washer. The central magnet is adhesively connected to the central washer and the yoke 4 respectively.

[0042] In this embodiment, the end of the yoke 4 has a flange 43 extending into the hollow region of the housing 11. The flange 43 can play a role in magnetic conduction. Preferably, the flange 43 is adhesively connected to the housing 11. The flange 43 is also a bent structure formed by bending a partial region of the yoke 4.

[0043] The above are only alternative 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 direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Sound generating unit, characterized in that: Comprising A basin frame, the basin frame includes a frame body, a positioning post is provided on the frame body, and a hot-melt wall and a jack are provided at one end of the positioning post away from the frame body; A yoke, the yoke has a pin that fits with the jack; The basin frame and the yoke are connected by hot melting through the hot-melt wall, and the hot-melt wall after hot melting covers at least a part of the exposed area of the pin.

2. The sound generating unit according to claim 1, wherein: The jack is filled with glue.

3. The sound generating unit according to claim 1, wherein: The end face of the positioning post away from the frame body is adhesively connected to the yoke.

4. The sound generating unit according to claim 1, wherein: The pin is a bent structure formed by bending a part of the area of the yoke.

5. The sound generating unit according to claim 1, wherein: The yoke is rectangular, and the four corners of the yoke respectively have the pins.

6. The sound generating unit according to claim 1, wherein: A pressing groove is provided on the edge of the side of the yoke away from the frame body, and a claw that extends into the pressing groove is formed after the hot-melt wall is hot melted.

7. The sound generating unit according to claim 1, wherein: It further includes a side magnet and a side washer. The side washer and the basin frame are an integrally formed structure by insert molding, and the side magnet is adhesively fixed to the side washer and the yoke respectively.

8. The sound generating unit according to claim 1, wherein: The end of the yoke has a flange that extends into the hollow area of the frame body.

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