CN215499556U - Small-size high drive power speaker - Google Patents

Abstract

The utility model discloses a small-size high-driving-force loudspeaker, which comprises a bracket main body, wherein the bracket main body is provided with: the magnetic circuit assembly comprises a magnetic cover unit, a magnetic steel unit and a pole piece unit, wherein the magnetic steel unit and the pole piece unit are arranged in the magnetic cover unit; vibration sound production subassembly, vibration sound production subassembly includes supporting element, sound membrane unit and voice coil loudspeaker voice coil unit, the supporting element is including relative first surface and the second surface that sets up, the sound membrane unit sets up at the first surface and is connected with the support, the voice coil loudspeaker voice coil unit sets up on the second surface, voice coil loudspeaker voice coil unit downwardly extending sets up between magnetism cover unit and magnet steel unit. The utility model breaks through the compliance limitation of the traditional suspension system, can more freely adjust the size of the voice coil and increase the driving force of the voice coil, thereby improving the sensitivity of the loudspeaker. Can be simultaneously applied to large magnetic and multi-magnetic loudspeakers.

Description

Small-size high drive power speaker

Technical Field

The utility model relates to the technical field of loudspeakers, in particular to a small-size high-driving-force loudspeaker.

Background

Electronic products such as mobile phones and the like in the existing market are generally light and thin, and the space of the loudspeaker is continuously reduced due to the stereo sound effect of the double loudspeakers, so that the small-size loudspeaker is selected; meanwhile, living and entertainment such as videos, meetings, games, music and the like simultaneously continuously improve the requirement on the sound effect of the loudspeaker, pursue higher volume, rich and full bass and intermediate frequency and the like, and the traditional loudspeaker can not meet the market requirement gradually at present.

Patent document 1 discloses a speaker including: a magnetic circuit system in which a static magnetic field is formed; the vibration system comprises a vibrating diaphragm and a first voice coil and is arranged in the static magnetic field; the first basin frame and the second basin frame are suitable for fixing the magnetic circuit system and the vibration system; wherein the loudspeaker is formed with a plurality of sound holes which are arranged around the central axis of the magnetic circuit system; the loudspeaker is provided with a plurality of sound outlet holes surrounding the central shaft of the magnetic circuit system, and the voice coil is added on the vibrating diaphragm, so that the nonlinear characteristic of the loudspeaker is reduced, the total harmonic distortion of the loudspeaker is suppressed, and the sensitivity of the loudspeaker is improved.

However, the speaker in patent document 1 still cannot be separated from the structure of the conventional speaker, the size of the diaphragm defines the size of the voice coil and the magnetic circuit, the effect of the speaker cannot be improved under a fixed size, and the structure of the dual voice coils adds steps to the assembly process, increases the cost, and is difficult to meet the existing market and production requirements.

Patent document 1: CN 107820169A.

SUMMERY OF THE UTILITY MODEL

The utility model provides a small-size high-driving-force loudspeaker to avoid the defects of the prior art, breaks through the limitation of a diaphragm on the sizes of a coil and a central magnetic circuit, fully utilizes the space below the diaphragm, improves the driving force of a voice coil, and improves the sensitivity of the loudspeaker under the condition that the size and the resonance frequency of the loudspeaker are the same.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a small-size high drive power speaker, includes the support main part, be provided with in the support main part: the magnetic circuit assembly comprises a magnetic cover unit, a magnetic steel unit and a pole piece unit, wherein the magnetic steel unit and the pole piece unit are arranged in the magnetic cover unit; vibration sound production subassembly, vibration sound production subassembly includes supporting element, sound membrane unit and voice coil loudspeaker voice coil unit, the supporting element is including relative first surface and the second surface that sets up, the sound membrane unit sets up at the first surface and is connected with the support, the voice coil loudspeaker voice coil unit sets up on the second surface, voice coil loudspeaker voice coil unit downwardly extending sets up between magnetism cover unit and magnet steel unit.

In several embodiments, the sound diaphragm unit includes a first bonding portion, a folded ring portion and a second bonding portion, the folded ring portion is disposed around between the first bonding portion and the second bonding portion, the folded ring portion has an upward convex radian, the first bonding portion is connected with the first surface, and the second bonding portion is connected with the support.

In several embodiments, the voice coil unit is disposed around an edge of the second surface and outside the first adhesive portion.

In several embodiments, the magnetic cover unit includes a base plate and a side plate, the base plate includes a plurality of side surfaces, a single side plate is correspondingly disposed on the single side surface, a gap exists between any two adjacent side plates, a plurality of extension pins are disposed on the base plate, and the extension pins are disposed at the gap between any two adjacent side plates and extend to the outside of the base plate.

In several embodiments, the support body includes a main frame body, a cavity is disposed in the main frame body, the magnetic circuit assembly is disposed in the cavity, and a plurality of pad feet are disposed on one side of the main frame body and correspond to the extension feet.

In several embodiments, a circle of partition plate is arranged on the inner wall of the cavity in a surrounding manner, the thickness of the partition plate is smaller than that of the main frame body, the upper end face and the lower end face of the partition plate do not exceed the upper end face and the lower end face of the main frame body simultaneously, and the partition plate is arranged below the folded ring part.

In several embodiments, the side plate is attached to the partition plate, and a plurality of grooves are formed in an inward concave manner on one side end face of the partition plate attached to the side plate.

In several embodiments, a plurality of positioning elements are disposed on one side end surface of the main frame body connected to the second bonding portion, and a plurality of notches are disposed on the second bonding portion, the notches corresponding to the positioning elements.

The utility model has the following beneficial effects:

the utility model combines the support unit, the voice film unit and the voice coil unit, so that the voice film can be indirectly adhered to the voice coil which is larger than the adhesive surface of the voice film, the magnetic steel, the pole piece and the magnetic cover provide a magnetic field and are mainly concentrated on the voice coil area, the voice coil is driven by the action of the magnetic field to carry out power conversion and serve as a power source of a vibration system, the support plate and the vibration film are pushed, and air is pushed to vibrate and sound; the structure breaks through the compliance limitation of the traditional suspension system, the size of the voice coil can be adjusted more freely, and the driving force of the voice coil is increased, so that the sensitivity of the loudspeaker is improved. Can be simultaneously applied to large magnetic and multi-magnetic loudspeakers.

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 shows a cross-sectional structure of a speaker in an embodiment;

fig. 3 schematically illustrates an exploded structure of a speaker in an embodiment;

FIG. 4 schematically illustrates the overall structure of a magnetic shield in one embodiment;

FIG. 5 schematically shows a one-side direction overall structure of a holder main body in an embodiment;

fig. 6 schematically shows the overall structure in the other side direction of the stent main body in an embodiment.

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.

Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope 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.

The high drive power speaker of small-size in this embodiment mainly includes support main part 10, sets up magnetic circuit assembly and the vibration sound production subassembly in the support main part, provides magnetic field by magnetic circuit assembly, and the vibration sound production subassembly receives the magnetic field effect drive, promotes the air vibration sound production.

As shown in fig. 1-4, the magnetic circuit assembly includes a magnetic cover unit 200, and a magnetic steel unit 201 and a pole piece unit 202 arranged in the magnetic cover unit 200, and the magnetic steel unit and the pole piece unit are stacked;

specifically, the magnetic shield unit 200 includes a base plate 210 and four side plates 220, the base plate 210 includes four side surfaces, the single side plate 220 is vertically disposed on the single side surface, a gap exists between any two adjacent side plates 220, a plurality of extension pins 230 are disposed on the base plate 210, the extension pins 230 are disposed at the gap between any two adjacent side plates 220 and extend to the outside of the base plate 210, and here, two extension pins are disposed between two adjacent side plates to form a Y-shaped structure, so that the magnetic shield effect is firstly improved, and meanwhile, the connection between the base plate and a home body is facilitated.

As shown in fig. 1 to 3, the vibration sound production assembly includes a supporting unit 300, a diaphragm unit 400 and a voice coil unit 500, wherein the supporting unit 300 includes a first surface 301 and a second surface 302 which are oppositely disposed, the supporting unit is a plate-shaped structure, the diaphragm unit 400 is disposed on the first surface 301 and connected to the bracket, the voice coil unit 500 is disposed on the second surface 302, and the voice coil unit 500 extends downward and is disposed between the magnetic cover unit 200 and the magnetic steel unit 201.

Specifically, the voice diaphragm unit 400 includes a first bonding portion 410, a folded ring portion 420 and a second bonding portion 430 that are annularly distributed, the folded ring portion 420 is disposed around between the first bonding portion 410 and the second bonding portion 430, the folded ring portion 420 has an upward convex radian, the first bonding portion 410 is connected to the first surface 301, the length and width of the first surface are greater than the length and width of the first bonding portion, the second bonding portion 430 is connected to the support, the voice diaphragm unit is integrally of an annular structure, and the voice coil unit 500 is disposed around the edge of the second surface 302 and located outside the first bonding portion 410.

It should be noted that, originally, the voice coil unit is directly connected to the first bonding portion, so the size of the voice coil unit is limited by the size of the first bonding portion, that is, the diaphragm unit, and in this embodiment, the first bonding portion is first connected to the support unit, the support unit extends to the folded ring portion, and the voice coil unit is then connected to the support unit, so the size of the voice coil unit can break through the size limitation of the first bonding portion, and can be increased to the position of the folded ring portion.

As shown in fig. 5 to 6, the holder body 10 includes a main frame body 110, a cavity 120 is formed in the main frame body 110, and a magnetic circuit assembly is disposed in the cavity 120, while the four side plates of the magnetic shield unit and a part of the voice coil unit are disposed in the cavity.

Correspondingly, be provided with a plurality of pads 130 on one side of the body frame 110, pad 130 is corresponding with extension foot 230, and the body frame of being convenient for is connected with the location between the magnetic shield unit to, it is provided with round baffle 140 to surround on the inner wall of cavity 120, the thickness of baffle 140 is less than the thickness of the body frame 110, just two upper and lower terminal surfaces of baffle 140 do not surpass two upper and lower terminal surfaces of the body frame 110 simultaneously, baffle 140 sets up in the below of book ring portion 420, through the setting of baffle, provides the clearance, and curb plate 220 laminates mutually with baffle 140, and the while is provided with a plurality of recesses 141 of inside sunken on the terminal surface of the curb plate 220 of laminating of baffle 140, stores up glue through recess 141, carries out the veneer to magnetic shield unit and the body frame from this and is connected, increases bonding strength.

As shown in fig. 1, 3 and 5, four positioning members 111 are disposed on the end surface of the main frame 110 connected to the second adhesive part 430, and are respectively located at four corners of the main frame, and four cutouts 431 are disposed at the four corners of the second adhesive part 430, so that the cutouts 431 correspond to the positioning members 111, thereby achieving the positioning and assembling effect.

In the utility model, under the condition that the width and the material of the corrugated rim part in the sound film unit are proper, the corrugated rim part is bonded with the supporting unit, the supporting unit is used for rigid support of the vibration system, the length and the width of the supporting unit are larger than those of the bonding surface (first bonding part) of the sound film unit, the other side of the supporting unit is bonded with the voice coil, therefore, the outer diameter of the voice coil can be close to the edge position of the supporting unit, and with the structural design, the sound film can be indirectly bonded to the voice coil which is larger than the bonding surface (first bonding part) of the sound film, a magnetic field is provided on the magnetic steel, the pole piece and the magnetic cover and is mainly concentrated on the coil area, the electrified coil is driven by the action of the magnetic field to carry out electric power conversion, and is used as a power source of the vibration system to push the supporting plate and the vibration film and push air to vibrate.

The use of the terms "a" and "an" and "the" and similar referents in the context of describing the utility model are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All manner of description herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the utility model and does not pose a limitation on the scope of the utility model unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the utility model.

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.

Description of the marks

Bracket main body 10

Main frame body 110

Positioning member 111

Cavity 120

Foot pad 130

Partition 140

Groove 141

Magnetic shield unit 200

Magnetic steel unit 201

Pole piece unit 202

Substrate 210

Side plate 220

Supporting unit 300

First surface 301

Second surface 302

Sound film unit 400

First adhesive part 410

Folded ring part 420

Second adhesive part 430

Cut 431

The voice coil unit 500.

Claims (8)

1. The utility model provides a high drive power speaker of small-size which characterized in that, includes the support main part, be provided with in the support main part:

the magnetic circuit assembly comprises a magnetic cover unit, a magnetic steel unit and a pole piece unit, wherein the magnetic steel unit and the pole piece unit are arranged in the magnetic cover unit;

vibration sound production subassembly, vibration sound production subassembly includes supporting element, sound membrane unit and voice coil loudspeaker voice coil unit, the supporting element is including relative first surface and the second surface that sets up, the sound membrane unit sets up at the first surface and is connected with the support, the voice coil loudspeaker voice coil unit sets up on the second surface, voice coil loudspeaker voice coil unit downwardly extending sets up between magnetism cover unit and magnet steel unit.

2. A small-sized high driving force loudspeaker according to claim 1, wherein the diaphragm unit includes a first adhesive portion, a folded ring portion and a second adhesive portion, the folded ring portion is disposed around between the first adhesive portion and the second adhesive portion, the folded ring portion has an upwardly convex curvature, the first adhesive portion is connected to the first surface, and the second adhesive portion is connected to the support.

3. A small-sized high-driving-force speaker according to claim 2, wherein the voice coil unit is provided around the edge of the second surface and outside the first adhesive portion.

4. A small-sized high-driving-force speaker according to claim 3, wherein the magnetic cover unit includes a base plate and side plates, the base plate includes a plurality of side faces, the single side plate is correspondingly disposed on the single side face, a gap exists between any two adjacent side plates, a plurality of extension legs are disposed on the base plate, and the extension legs are disposed at the gap between any two adjacent side plates and extend to the outside of the base plate.

5. A small-sized high-driving-force loudspeaker according to claim 4, wherein the support main body comprises a main frame body, a cavity is formed in the main frame body, the magnetic circuit assembly is arranged in the cavity, and a plurality of foot pads are formed on one side of the main frame body and correspond to the extension feet.

6. A small-size high drive power speaker as claimed in claim 5, wherein a ring of partition plate is disposed around the inner wall of the cavity, the thickness of the partition plate is smaller than that of the main frame, the upper and lower end surfaces of the partition plate do not exceed the upper and lower end surfaces of the main frame at the same time, and the partition plate is disposed below the folded ring portion.

7. A small-sized high-driving-force loudspeaker according to claim 6, wherein the side plate is attached to a partition plate, and a plurality of grooves are formed in an end surface of the partition plate, which is attached to the side plate, and is recessed inward.

8. A small-sized high-driving-force loudspeaker according to claim 5, wherein a plurality of positioning members are provided on an end surface of the main frame body on a side connected to the second adhesive part, and a plurality of cutouts are provided on the second adhesive part, the cutouts corresponding to the positioning members.

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