CN219999580U

CN219999580U - Large-amplitude loudspeaker and loudspeaker module

Info

Publication number: CN219999580U
Application number: CN202320617016.1U
Authority: CN
Inventors: 张俊利; 张文华
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-11-10
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a large-amplitude loudspeaker and a loudspeaker module. The large-amplitude loudspeaker includes a basin frame, a vibration component, a magnetic circuit component and an auxiliary membrane. The vibration component includes a connected diaphragm component and a voice coil. The diaphragm The component is connected to the basin frame; the magnetic circuit assembly is connected to the basin frame, and the magnetic circuit assembly includes a yoke and a center magnet and a side magnet respectively provided on the yoke, and the side magnets are located on the The yoke has a flange on the outside of the side of the center magnet, and the flange is located on the outside of the end of the center magnet; the auxiliary membrane connects the basin frame and the voice coil. The middle area of one end of the secondary membrane close to the voice coil is provided with an escape notch for avoiding the flange; the end of the central magnet has a magnet protrusion extending in a direction close to the secondary membrane, The magnetic steel protruding portion is arranged corresponding to the avoidance notch. This large amplitude loudspeaker has excellent performance.

Description

Large-amplitude loudspeaker and loudspeaker module

Technical Field

The utility model relates to the technical field of electroacoustic transducers, in particular to a large-amplitude loudspeaker and a loudspeaker module.

Background

The micro-speaker is widely applied to portable electronic devices such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, there is an increasing demand for miniature electroacoustic devices to be used therein, and the use of speakers/receivers is becoming popular as large-amplitude speakers or super-linear speakers. The amplitude of the loudspeaker/receiver is gradually increased from 0.2mm to more than 0.4mm, and the miniature loudspeaker/receiver with ultra-large amplitude of 0.65mm is currently being realized in mass production.

The conventional suspension wire large-amplitude loudspeaker is free of suspension wires, a three-magnetic structure is generally adopted, the performance of the three-magnetic structure loudspeaker is much worse than that of a five-magnetic structure loudspeaker, in addition, in order to leave enough allowance for adhesion fluctuation/assembly errors of an auxiliary membrane and a voice coil in the production process, the auxiliary membrane is prevented from contacting with the center magnetic steel, a large gap width (generally 0.3 mm) is generally reserved between the voice coil and the center magnetic steel in the industry, and the design of a wide gap clearly occupies more internal space of the loudspeaker, so that the performance of the magnetic circuit assembly is difficult to promote.

Disclosure of Invention

The technical problems solved by the utility model are as follows: provided is a high-performance large-amplitude speaker and a speaker module having the same.

In order to solve the technical problems, the first technical scheme adopted by the utility model is as follows: a large amplitude speaker comprising:

a basin stand;

the vibration assembly comprises a vibrating diaphragm assembly and a voice coil which are connected, and the vibrating diaphragm assembly is connected with a basin frame;

the magnetic circuit assembly is connected with the basin frame and comprises a yoke, and a central magnetic steel and side magnetic steel which are respectively arranged on the yoke, wherein the side magnetic steel is positioned at the outer side of the side edge of the central magnetic steel, the yoke is provided with a flanging, and the flanging is positioned at the outer side of the end part of the central magnetic steel;

the auxiliary membrane is connected with the basin frame and the voice coil, and an avoidance notch for avoiding the flanging is formed in the middle area of one end, close to the voice coil, of the auxiliary membrane;

the end part of the central magnetic steel is provided with a magnetic steel protruding part extending towards the direction close to the auxiliary film, and the magnetic steel protruding part is arranged corresponding to the avoidance notch.

Further, the width of the avoidance gap is larger than the width of the magnetic steel protruding portion.

Further, the auxiliary membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected, the inner fixing part is connected with the voice coil, the outer fixing part is connected with the basin frame, the avoidance notch comprises a first part arranged on the inner fixing part and a second part arranged on the folded ring part, and the first part is communicated with the second part and the inner side wall of the inner fixing part.

Further, the inner fixing portion is bonded to the voice coil.

Further, the magnetic steel protruding portion and the central magnetic steel are of an integrated structure formed by integrated processing.

Further, the magnetic circuit assembly further comprises a central washer arranged on the central magnetic steel, and the central washer is provided with washer protruding portions corresponding to the magnetic steel protruding portions.

Further, the edge of the top surface of the central washer is provided with an avoidance blank holder.

Further, the magnetic circuit assembly further comprises an annular washer, the annular washer is connected with the basin frame, and the annular Hua Siwei is arranged above the side magnetic steel and is close to the side magnetic steel.

Further, a bonding pad is arranged on the basin frame, the voice coil comprises a body and a suspension wire which are connected, and one end of the suspension wire, which is far away from the body, is pulled to the bonding pad from the outer side of the flanging and is welded with the bonding pad.

In order to solve the technical problems, the second technical scheme adopted by the utility model is as follows: the loudspeaker module comprises the large-amplitude loudspeaker.

The utility model has the beneficial effects that: the suspension wire large-amplitude loudspeaker has the advantages that the yoke iron forms a flanging on the basis of a three-magnetic structure, so that a magnetic loop is enhanced, and the aim of improving the performance of the large-amplitude loudspeaker is fulfilled; in order to avoid interference between the auxiliary film and the flanging, the auxiliary film is provided with an avoidance gap for avoiding the flanging, and the gap between the voice coil and the central magnetic steel does not need to be reserved for an adhesion fluctuation allowance in a region corresponding to the avoidance gap, so that the region of the central magnetic steel corresponding to the avoidance gap can epitaxially form a magnetic steel bulge in a direction close to the auxiliary film, thereby enhancing the magnetic field intensity of the magnetic circuit assembly and being beneficial to further improving the performance of the large-amplitude loudspeaker.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an internal structure of a large-amplitude speaker according to a first embodiment of the present utility model;

fig. 2 is an enlarged view at a in fig. 1.

Reference numerals illustrate:

1. a basin stand;

2. a secondary membrane; 21. avoiding the notch; 22. an inner fixing part; 23. a ring folding part;

3. a voice coil; 31. a body; 32. a suspension wire;

4. a yoke; 41. flanging;

5. a center magnetic steel; 51. a magnetic steel protrusion;

6. edge magnetic steel;

7. a central washer; 71. a washer protrusion;

8. annular washer;

9. and a bonding pad.

Detailed Description

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 and 2, a first embodiment of the utility model is as follows: a large-amplitude loudspeaker can be applied to portable electronic equipment such as mobile phones, notebook computers, hearing aids and the like.

The large-amplitude loudspeaker comprises a basin frame 1, a magnetic circuit assembly, a vibration assembly and a secondary membrane 2, wherein the vibration assembly comprises a vibration membrane assembly and a voice coil 3 which are connected, the vibration membrane assembly is connected with the basin frame 1, in the embodiment, the vibration membrane assembly comprises a sound membrane and a middle paste arranged on the sound membrane, the sound membrane is connected with the basin frame 1, and in other embodiments, the vibration membrane assembly can only be provided with the sound membrane and not provided with the middle paste;

the magnetic circuit assembly is connected with the basin frame 1 and comprises a yoke 4, a central magnetic steel 5 and side magnetic steels 6, wherein the central magnetic steel 5 and the side magnetic steels 6 are respectively arranged on the yoke 4, the side magnetic steels 6 are positioned on the outer sides of the side edges of the central magnetic steel 5, the yoke 4 is provided with flanges 41, the flanges 41 are positioned on the outer sides of the end parts of the central magnetic steels 5, the number of the side magnetic steels 6 and the number of the flanges 41 are two, the two side magnetic steels 6 are oppositely arranged, the two flanges 41 are oppositely arranged, the central magnetic steel 5 is positioned between the two side magnetic steels 6 and between the two flanges 41, a magnetic gap of the magnetic circuit assembly is formed by a gap between the central magnetic steel 5 and the side magnetic steels 6 and a gap between the central magnetic steel 5 and the flanges 41, and the magnetic gap is used for enabling the voice coil 3 to move;

the auxiliary membrane 2 is connected with the basin frame 1 and the voice coil 3, and an avoidance notch 21 for avoiding the flange 41 is formed in the middle area of one end, close to the voice coil 3, of the auxiliary membrane 2;

the tip of center magnet steel 5 has towards being close to magnet steel bulge 51 that auxiliary membrane 2 direction extends, magnet steel bulge 51 corresponds to dodge breach 21 setting, dodge the width of breach 21 is greater than magnet steel bulge 51's width, so, can ensure that voice coil 3 corresponds the region of magnet steel bulge 51 need not with auxiliary membrane 2 is connected, promptly voice coil 3 corresponds the region of magnet steel bulge 51 need not to reserve the bonding fluctuation surplus for auxiliary membrane 2.

The auxiliary membrane 2 comprises an inner fixing part 22, a folded ring part 23 and an outer fixing part which are sequentially connected, wherein the inner fixing part 22 is connected with the voice coil 3, the outer fixing part is connected with the basin frame 1, specifically, the inner fixing part 22 is adhered to the voice coil 3, and the outer fixing part is adhered to the basin frame 1; the avoiding notch 21 includes a first portion disposed on the inner fixing portion 22 and a second portion disposed on the ring-folding portion 23, where the first portion communicates with the second portion and an inner sidewall of the inner fixing portion 22, that is, when the auxiliary film 2 is viewed from above, the auxiliary film 2 is shaped like a Chinese character 'qi'.

For easy processing and assembly, the magnetic steel protrusion 51 and the central magnetic steel 5 are preferably integrally formed.

Further, the magnetic circuit assembly further comprises a central washer 7 and an annular washer 8, the central washer 7 is arranged on the central magnetic steel 5, the central washer 7 is provided with a washer protruding portion 71 which is arranged corresponding to the magnetic steel protruding portion 51, the annular washer 8 is connected with the basin frame 1, the annular washer 8 is located above the edge magnetic steel 6 and is close to the edge magnetic steel 6, and preferably the annular washer 8 is in contact with the edge magnetic steel 6.

In order to avoid noise generated by the vibration component touching the central washer 7 in the process of vibration, the edge of the top surface of the central washer 7 is preferably provided with an avoiding blank holder.

The basin frame 1 is provided with a bonding pad 9, the voice coil 3 comprises a body 31 and a suspension wire 32 which are connected, and one end of the suspension wire 32 far away from the body 31 is pulled to the bonding pad 9 from the outer side of the flanging 41 and is welded with the bonding pad 9.

The embodiment also provides a speaker module, the speaker module includes a module housing and a speaker unit disposed in the module housing, and the speaker unit is the large-amplitude speaker.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A large amplitude speaker, characterized by: comprising

A basin stand;

2. The large amplitude speaker of claim 1, wherein: the width of the avoidance gap is larger than that of the magnetic steel protruding portion.

3. The large amplitude speaker of claim 1, wherein: the auxiliary membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected, wherein the inner fixing part is connected with the voice coil, the outer fixing part is connected with the basin frame, the avoidance notch comprises a first part arranged on the inner fixing part and a second part arranged on the folded ring part, and the first part is communicated with the second part and the inner side wall of the inner fixing part.

4. A large amplitude loudspeaker according to claim 3, characterized in that: the inner fixing portion is bonded to the voice coil.

5. The large amplitude speaker of claim 1, wherein: the magnetic steel protruding part and the central magnetic steel are of an integrated structure formed by integrated processing.

6. The large amplitude speaker of claim 1, wherein: the magnetic circuit assembly further comprises a central washer which is arranged on the central magnetic steel and provided with washer protruding portions corresponding to the magnetic steel protruding portions.

7. The large amplitude speaker of claim 6, wherein: and the edge of the top surface of the central washer is provided with an avoidance blank holder.

8. The large amplitude speaker of claim 1, wherein: the magnetic circuit assembly further comprises an annular washer, the annular washer is connected with the basin frame, and the annular Hua Siwei is arranged above the side magnetic steel and is close to the side magnetic steel.

9. The large amplitude speaker of claim 1, wherein: the basin frame is provided with a bonding pad, the voice coil comprises a body and a suspension wire which are connected, and one end of the suspension wire, which is far away from the body, is pulled to the bonding pad from the outer side of the flanging and is welded with the bonding pad.

10. Speaker module, its characterized in that: comprising a large amplitude loudspeaker according to any of claims 1-9.