CN224083688U - Miniature speaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a basin frame, centering support pieces and a magnetic circuit assembly, wherein the basin frame is in a rectangular frame shape, the four corners of the basin frame are respectively provided with the centering support pieces, wherein the two centering support pieces are provided with inner bonding pads, the magnetic circuit assembly comprises a central magnetic steel and two first side magnetic steels, the central magnetic steel is positioned between the two first side magnetic steels which are arranged in parallel, the first side magnetic steel is provided with a first central section perpendicular to a first direction, the central magnetic steel is provided with a second central section perpendicular to the first direction, and the first central section is offset towards a direction far away from the inner bonding pads relative to the second central section. This micro-speaker novel structure only has two centering support pieces to have interior pad, thereby let more setting space for first side magnet steel, and then let the total volume of first side magnet steel can set up bigger, do benefit to the magnetic field strength of reinforcing micro-speaker, promote micro-speaker's BL value, reach the effect that improves micro-speaker's acoustic properties.

Description

Micro-speaker

Technical Field

The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.

Background

The micro-speaker is widely applied to electronic devices such as mobile phones, notebook computers, telephone watches and the like. The miniature loudspeaker comprises a magnetic circuit component and a voice coil, wherein the magnetic circuit component comprises a yoke iron and a central magnetic steel and side magnetic steels which are respectively arranged on the yoke iron, and the central magnetic steel is positioned between at least one group of two side magnetic steels which are oppositely arranged, so that the miniature loudspeaker is easier to operate in the production process. In order to rectify the voice coil, four corners of a part of the micro-speaker are respectively provided with a centering support plate, the centering support plates are connected with the basin frame and the voice coil, the centering support plates are provided with inner bonding pads which are welded and conducted with the voice coil, and the distribution of the four centering support plates is of a central symmetrical structure and a plane symmetrical structure, however, the voice coil is generally provided with only two leads, and the four centering support plates are respectively provided with the inner bonding pads, so that the waste of material cost can be caused, and the inner space of the micro-speaker can be excessively occupied, so that the volume of the side magnetic steel cannot be set larger, and the acoustic performance of the micro-speaker is poor.

Disclosure of utility model

The utility model solves the technical problem of providing a high-performance micro-speaker.

In order to solve the technical problems, the utility model adopts the technical scheme that the micro loudspeaker comprises:

The basin stand is rectangular frame-shaped;

The four corners of the basin frame are respectively provided with the centering support pieces, wherein the two centering support pieces are provided with inner bonding pads;

The magnetic circuit assembly comprises a central magnetic steel and two first side magnetic steels, wherein the central magnetic steel is positioned between the two first side magnetic steels in parallel, the first side magnetic steel is provided with a first central section perpendicular to a first direction, the central magnetic steel is provided with a second central section perpendicular to the first direction, and the first central section is offset towards a direction away from the inner bonding pad relative to the second central section.

In an embodiment, the central magnetic steel has a third central section parallel to the first direction, and the two first edge magnetic steels are symmetrically arranged relative to the third central section.

In one embodiment, the two first edge magnetic steels are centrosymmetric.

In an embodiment, the inner pad extends towards the outside of the end of the first side magnetic steel close thereto.

In one embodiment, at least two of the centering tabs are connected to form a unitary structure.

In one embodiment, the voice coil further comprises a voice coil, wherein the voice coil comprises a body and a lead which are connected, and the lead is welded and conducted with the inner bonding pad.

In an embodiment, the centering support piece comprises an inner mounting portion, a cantilever portion and an outer mounting portion which are sequentially connected, the inner mounting portion is fixedly connected with the voice coil, the inner bonding pad is arranged on the inner mounting portion, an outer bonding pad which is communicated with the inner bonding pad is arranged on the outer mounting portion, and the outer mounting portion is fixedly connected with the basin frame.

In an embodiment, the voice coil loudspeaker further comprises a vibrating diaphragm assembly, and the vibrating diaphragm assembly is connected with the voice coil and the basin frame.

In an embodiment, the magnetic circuit assembly further includes a yoke, and the center magnetic steel and the first side magnetic steel are respectively connected to the yoke.

In an embodiment, the magnetic circuit assembly further comprises a first edge washer, and the first edge washer is connected with the first edge magnetic steel and the basin frame.

Compared with the magnetic circuit component/centering support piece which is symmetrical in center and symmetrical in plane in the prior art, the miniature loudspeaker has the advantages that only two centering support pieces are provided with inner bonding pads, so that more setting space is reserved for the first side magnetic steel, the total volume of the first side magnetic steel can be set larger, the magnetic field intensity of the miniature loudspeaker is enhanced, the BL value of the miniature loudspeaker is improved, and the acoustic performance of the miniature loudspeaker is improved.

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 diagram of a micro speaker according to an embodiment of the present utility model after hiding a yoke;

fig. 2 is a bottom view of the structure shown in fig. 1.

Reference numerals illustrate:

1. a basin stand;

2. centering support piece, 21, inner bonding pad, 22, inner mounting part, 23, cantilever part, 24, outer mounting part;

31. 32, voice coil;

41. 42, first side magnetic steel;

51. first central section, 52, second central section, 53, third central section.

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 correspondingly changed.

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 application, 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, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 and 2, the first embodiment of the utility model is a micro speaker, which comprises a frame 1, a centering support 2, a vibration assembly and a magnetic circuit assembly, wherein the frame 1 is in a rectangular frame shape, the centering support 2 is respectively mounted at four corners of the frame 1, wherein two centering supports 2 are provided with inner bonding pads 21, the vibration assembly comprises a vibrating diaphragm assembly 31 and a voice coil 32, the voice coil 32 comprises a body connected with a lead wire, the lead wire is in welding conduction with the inner bonding pads 21, the vibrating diaphragm assembly 31 is connected with the voice coil 32 and the frame 1, the magnetic circuit assembly comprises a yoke, a central magnetic structure and a first side magnetic structure, the central magnetic structure is respectively arranged on the yoke, the central magnetic structure is positioned between the two first side magnetic structures, the central magnetic structure comprises a central magnetic steel 41 and a central washer, the central washer is positioned above the central magnetic steel 41, the central magnetic steel 41 is respectively connected with the yoke, the first side magnetic steel 42 comprises a first side magnetic steel 42 and a first side magnetic steel 42, the first side of the first side magnetic steel is connected with the first side magnetic steel 42 in a direction perpendicular to the first side of the first yoke 42, and the first side magnetic steel is positioned in a section 52 which is parallel to the first side of the first yoke 42, and the section is parallel to the first side 52 of the first side 52.

The inner bonding pad 21 extends towards the outer side of the end portion of the first side magnetic steel 42 close to the inner bonding pad, and the technical scheme is understood by changing the way, assuming that the first central section 51 is overlapped with the second central section 52 originally, since the first side magnetic steel 42 needs to avoid the inner bonding pad 21, the length of the first side magnetic steel 42 is reduced, so that the first central section 51 is offset relative to the second central section 52. In the conventional micro-speaker, since the four centering brackets 2 have the inner pads 21, the two ends of the first side magnetic steel 42 are reduced, so that the first center section 51 and the second center section 52 remain overlapped. That is, compared with the prior art, the present solution is equivalent to extending the end of the first side magnetic steel 42 away from the inner pad 21, so as to increase the total volume of the first side magnetic steel 42.

In this embodiment, the central magnetic steel 41 has a third central section 53 parallel to the first direction, and the two first side magnetic steels 42 are symmetrically disposed with respect to the third central section 53. In other embodiments, it is also possible that the two first side magnetic steels 42 are symmetrical in center, that is, the first center sections 51 of the two first side magnetic steels 42 are offset in opposite directions with respect to the second center sections 52.

In fig. 2, a dense broken line indicates a first central section 51, a sparse broken line indicates a second central section 52, and a dash-dot line indicates a third central section 53.

In this embodiment, four of the centering lugs 2 are of a discrete type, and in other embodiments, it is acceptable that at least two of the centering lugs 2 are connected to form a unitary structure.

The centering support piece 2 comprises an inner mounting portion 22, a cantilever portion 23 and an outer mounting portion 24 which are sequentially connected, the inner mounting portion 22 is fixedly connected with the voice coil 32, the inner bonding pad 21 is arranged on the inner mounting portion 22, an outer bonding pad communicated with the inner bonding pad 21 is arranged on the outer mounting portion 24, and the outer mounting portion 24 is fixedly connected with the basin frame 1.

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 (10)

1. The micro-speaker is characterized by comprising

The basin stand is rectangular frame-shaped;

The four corners of the basin frame are respectively provided with the centering support pieces, wherein the two centering support pieces are provided with inner bonding pads;

The magnetic circuit assembly comprises a central magnetic steel and two first side magnetic steels, wherein the central magnetic steel is positioned between the two first side magnetic steels in parallel, the first side magnetic steel is provided with a first central section perpendicular to a first direction, the central magnetic steel is provided with a second central section perpendicular to the first direction, and the first central section is offset towards a direction away from the inner bonding pad relative to the second central section.

2. The micro-speaker of claim 1, wherein the center magnetic steel has a third center section parallel to the first direction, and the two first side magnetic steels are symmetrically disposed with respect to the third center section.

3. The micro-speaker of claim 1, wherein the two first edge magnets are centered symmetrically.

4. The micro-speaker of claim 1, wherein the inner pad extends outward of an end of the first side magnetic steel adjacent thereto.

5. The micro-speaker of claim 1, wherein at least two of the centering tabs are connected to form a unitary structure.

6. The micro-speaker of claim 1, further comprising a voice coil, wherein the voice coil comprises a body and leads connected, wherein the leads are in solder communication with the inner pads.

7. The micro-speaker of claim 6, wherein the centering support comprises an inner mounting portion, a cantilever portion and an outer mounting portion which are sequentially connected, the inner mounting portion is fixedly connected with the voice coil, the inner bonding pad is arranged on the inner mounting portion, the outer mounting portion is provided with an outer bonding pad which is communicated with the inner bonding pad, and the outer mounting portion is fixedly connected with the basin frame.

8. The micro-speaker of claim 6, further comprising a diaphragm assembly, wherein the diaphragm assembly connects the voice coil and the frame.

9. The micro-speaker of claim 1, wherein the magnetic circuit assembly further comprises a yoke, and the center magnetic steel and the first side magnetic steel are respectively connected to the yoke.

10. The micro-speaker of claim 1, wherein the magnetic circuit assembly further comprises a first edge washer, the first edge washer connecting the first edge magnet and the basin stand.