CN216626042U

CN216626042U - Structure for preventing deformation of multi-magnetic circuit monomer

Info

Publication number: CN216626042U
Application number: CN202123241047.1U
Authority: CN
Inventors: 丁鹏; 魏建敏; 张凯; 张林峰; 伊仁鑫
Original assignee: Zhejiang Qisheng Electronic Technology Co ltd
Current assignee: Zhejiang Qisheng Electronic Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-27
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a structure for preventing a multi-magnetic circuit monomer from deforming, which comprises a magnetic circuit part and a bracket part, wherein the magnetic circuit part comprises a magnetic cover body, and a central magnetic steel and side magnetic steels which are arranged on the same end surface of the magnetic cover body, at least two side magnetic steels are arranged on two opposite sides of the central magnetic steel, the bracket part is attached to the side magnetic steels, the bracket part is connected with the magnetic cover body through a stopping structure, and the stopping structure is used for limiting the bracket to move towards one side of the central magnetic steel along with the side magnetic steels. According to the utility model, through the arrangement of the stop structure, the side magnetic steels and the central magnetic steels are supported by the magnetic cover body and the support body when being adsorbed, so that the side magnetic steels are prevented from driving the support body to deform towards the central magnetic steels, the tolerance power is improved, and the yield of a production line is improved.

Description

Structure for preventing deformation of multi-magnetic circuit monomer

Technical Field

The utility model relates to the technical field of loudspeakers, in particular to a structure for preventing a multi-magnetic circuit single body from deforming.

Background

The loudspeaker is commonly called a loudspeaker, is an electroacoustic device capable of converting an electric signal into sound, and is an important apparatus in an acoustic system. The magnetic circuit and the bracket part are important components of the loudspeaker, and in the multi-magnetic circuit structure, because the magnetic tape moves the bracket to move towards the central magnetic direction to generate deformation due to the adsorption force between the edge magnet and the central magnet, the magnetic gap is reduced, the diaphragm is deformed, and the problems of noise rubbing, vibration of the diaphragm, rolling vibration and the like are caused.

Thus, a speaker structure preventing deformation is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a structure for preventing deformation of a multi-magnetic circuit single body for a loudspeaker, which is used for avoiding the defects of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a prevent structure of multi-magnetic circuit monomer deformation, includes magnetic circuit portion and support portion, magnetic circuit portion includes the magnet cage body and sets up center magnet steel and limit magnet steel on the same terminal surface of magnet cage body, and two at least limit magnet steels set up the relative both sides at center magnet steel, support portion sets up with the laminating of limit magnet steel, be connected through detent structure between support portion and the magnet cage body, detent structure is used for restricting the support and removes to center magnet steel one side along with limit magnet steel.

In several embodiments, the stop structure includes a first detent disposed on the holder portion and a second detent disposed on the magnet shield body that mate.

In some embodiments, each side arm of the bracket part, which is attached to the side magnetic steel, is provided with a plurality of first clamping parts, and the whole body of the magnet cover body is provided with a plurality of second clamping parts correspondingly.

In several embodiments, the first clamping part protrudes from the bracket part and extends to the magnetic cover body, and the second clamping part is inwards sunken from the side surface of the magnetic cover body to form a groove body for the first clamping part to be embedded in.

In several embodiments, the second clamping part protrudes from the magnetic cover body and extends to the bracket part, and the first clamping part is inwards sunken from the end face of the bracket part to form a groove body for the second clamping part to be embedded in.

In some embodiments, the first locking portion protrudes from the holder portion and extends in the direction of the magnetic cover, the second locking portion protrudes from the magnetic cover and extends in the direction of the holder portion, and the first locking portion is partially attached to the second locking portion and is located outside the second locking portion.

In a plurality of embodiments, the voice coil further comprises a sound film, a voice coil, a support sheet and a pole piece group, wherein the support sheet is arranged between the support part and the sound film, the voice coil is arranged on the support sheet and is positioned between the central magnetic steel and the side magnetic steel, and the pole piece group is arranged on the magnetic circuit part.

The utility model has the following beneficial effects:

according to the utility model, through the arrangement of the stop structure, the side magnetic steels and the central magnetic steels are supported by the magnetic cover body and the support body when being adsorbed, so that the side magnetic steels are prevented from driving the support body to deform towards the central magnetic steels, the tolerance power is improved, and the yield of a production line is improved.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not to be considered limiting of the scope of the present disclosure.

Fig. 1 schematically shows the overall structure of a speaker in an embodiment;

fig. 2 schematically illustrates an exploded structure of a speaker in an embodiment;

FIG. 3 schematically illustrates an enlarged partial structure of the magnetic shield and the bracket body in one embodiment;

FIG. 4 schematically illustrates a magnetic shield and a bracket body in another embodiment, and a partial enlarged structure;

fig. 5 schematically shows a bracket body and a magnetic cover body in another two embodiments and a partial enlarged structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting and/or limiting of the utility model.

For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "relative", "front-back-left-right" and the like indicate relative or absolute arrangements, and indicate not only such arrangements in a strict sense but also a state of being relatively displaced with a tolerance or an angle or a distance to the extent that the same function can be obtained.

Example 1

As shown in fig. 1-3, the structure for preventing deformation of the single multi-magnetic circuit in this embodiment mainly includes a magnetic circuit portion and a bracket portion 200, and combines the conventional components in the art: the voice coil 500 is arranged on the support sheet 600 and positioned between the central magnetic steel 120 and the side magnetic steel 130, a gap exists between the voice coil 500 and the support sheet 600, the gap is required to be prevented from changing, and the corresponding pole piece group 700 is arranged above the magnetic circuit part.

The magnetic circuit part comprises a magnetic cover body 110, and a center magnetic steel 120 and an edge magnetic steel 130 which are arranged on the same end face of the magnetic cover body 110, at least two edge magnetic steels 130 are arranged on two opposite sides of the center magnetic steel 120, the support part 200 and the edge magnetic steel 130 are fixedly attached, the support part 200 is in a square structure, the center magnetic steel 120 is positioned in an opening of the support part and is not in contact with the center magnetic steel, four side walls of the support part 200 are used for being connected and fixed with the corresponding edge magnetic steel in a whole or partial mode, the support part 200 is connected with the magnetic cover body 110 through a stopping structure, and the stopping structure is used for limiting the support to move towards one side of the center magnetic steel 120 along with the edge magnetic steel 130.

That can be that a center magnet steel 120 both sides set up the three magnetic circuit structure of two limit magnet steels 130, perhaps a center magnet steel 120 and four five magnetic circuit structures of four limit magnet steels 130 of cooperateing all around, certainly can also be the many magnetic circuit structure of other quantity, the position that only needs to guarantee every limit magnet steel all have detent structure can, avoid the limit magnet steel of this position to the magnetism of center magnet steel direction to inhale the motion from this.

Specifically, the locking structure includes a first locking portion 310 and a second locking portion 320, which are matched with each other, the first locking portion 310 is disposed on the holder 200, the second locking portion 320 is disposed on the magnet cover body 110, that is, a plurality of first locking portions 310 are disposed on each side arm where the holder 200 is attached to the side magnet 130, a plurality of second locking portions 320 are correspondingly disposed on the circumference of the magnet cover body 110, the number of the first locking portions 310 is equal to the number of the second locking portions 320, and here, two first locking portions 310 and two second locking portions 320 are disposed on the same side surface, which may be one, three, four or other numbers.

As shown in fig. 3, the first locking portion 310 protrudes from the holder 200 and extends to the magnet cover 110, the second locking portion 320 is recessed inward from the side surface of the magnet cover 110 to form a groove into which the first locking portion 310 is inserted, that is, the first locking portion 310 is in a protruding insertion column shape, the second locking portion 320 is in a recessed groove shape, the first locking portion 310 is at the lower end surface of the side wall of the holder 200 and protrudes downward along the outer end surface thereof, the second locking portion 310 is recessed inward from the outer end surface of the magnet cover 110 and penetrates the upper and lower end surfaces thereof, and thus the first locking portion 320 is inserted into the second locking portion 310 and the magnet cover abuts against the first locking portion to prevent inward displacement.

Example 2

Compared with embodiment 1, the difference lies in the structure of the first locking portion 310 and the second locking portion 320, here, the second locking portion 320 protrudes from the magnetic cover body 110 and extends to the bracket portion 200, the first locking portion 310 is recessed inwards from the end surface of the bracket portion 200 to form a groove body for the second locking portion 320 to insert, that is, the first locking portion 310 is a structure having a recessed insertion groove, the second locking portion 320 is a protruding insertion column-shaped structure, and the insertion groove of the first locking portion 310 is recessed upwards from the lower end surface thereof, and the second locking portion is protruding upwards from the upper end surface of the magnetic cover body, thereby realizing the insertion.

Example 3

Compared with the above embodiment, the difference lies in the structure of the first clamping part 310 and the second clamping part 320, here, the first clamping part 310 protrudes from the bracket 200 and extends towards the magnet cover body 110, the second clamping part 320 protrudes from the magnet cover body 110 and extends towards the bracket 200, the first clamping part 310 and the second clamping part 320 are partially jointed and positioned outside the second clamping part 320, namely, the first clamping part 310 and the second clamping part 320 are both protruded towards each other, the clamping effect is realized by the jointed and overlapped part, a groove body is opened on the outer side wall of the second clamping part 320 in the longitudinal direction, thereby the inserted and overlapped part of the first clamping part 310 is accommodated, and the clamping effect is ensured.

The present invention describes preferred embodiments, including the best mode known to the inventors for carrying out the utility model. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors envision that the variations may be used as appropriate by those skilled in the art and the inventors intend for the utility model to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications encompassed within the spirit and scope of the utility model as defined by the claims. Moreover, any and all possible variations of the above-described elements are encompassed by the present invention unless otherwise indicated herein or otherwise clearly contradicted by context.

Claims

1. The structure is characterized in that the support part and the magnetic cover body are connected through a locking structure, and the locking structure is used for limiting the support to move to one side of the central magnetic steel along with the side magnetic steel.

2. A structure for preventing deformation of a multi-magnetic circuit unit as claimed in claim 1, wherein the stop structure comprises a first engaging portion and a second engaging portion, the first engaging portion is disposed on the holder portion, and the second engaging portion is disposed on the cover body.

3. A structure for preventing deformation of a multi-magnetic circuit unit as defined in claim 2, wherein a plurality of first engaging portions are provided on each side arm of the holder portion abutting against the side magnetic steel, and a plurality of second engaging portions are provided on the entire circumference of the cover body.

4. A structure for preventing deformation of a multi-magnetic circuit unit as claimed in claim 3, wherein the first engaging portion protrudes from the holder portion and extends to the magnet cover body, and the second engaging portion is recessed inward from a side surface of the magnet cover body to form a groove into which the first engaging portion is inserted.

5. A structure for preventing deformation of a single multi-magnetic circuit according to claim 3, wherein the second engaging portion protrudes from the magnetic cover and extends to the support portion, and the first engaging portion is recessed inward from an end surface of the support portion to form a groove into which the second engaging portion is inserted.

6. A structure for preventing deformation of a multi-magnetic circuit unit as defined in claim 3, wherein the first engaging portion protrudes from the holder portion and extends in the direction of the magnetic cover, the second engaging portion protrudes from the magnetic cover and extends in the direction of the holder portion, and the first engaging portion is partially engaged with the second engaging portion and is located outside the second engaging portion.

7. A structure for preventing deformation of a multi-magnetic circuit unit according to any one of claims 1 to 6, further comprising a voice diaphragm, a voice coil, a support plate and a pole piece set, wherein the support plate is disposed between the support portion and the voice diaphragm, the voice coil is disposed on the support plate and between the central magnetic steel and the side magnetic steel, and the pole piece set is disposed on the magnetic circuit portion.