CN106303860B

CN106303860B - Loudspeaker

Info

Publication number: CN106303860B
Application number: CN201610842801.1A
Authority: CN
Inventors: 刘增强
Original assignee: Shenzhen Sunway Acoustics Technology Co Ltd
Current assignee: Weishi Technology Co.,Ltd.
Priority date: 2016-09-22
Filing date: 2016-09-22
Publication date: 2021-07-27
Anticipated expiration: 2036-09-22
Also published as: CN106303860A

Abstract

The invention discloses a loudspeaker, which comprises a voice coil, an annular vibrating diaphragm arranged above the voice coil, a blocking piece and an annular reinforcing plate, wherein the annular reinforcing plate is arranged along the circumferential direction of the vibrating diaphragm; the blocking piece is partially fixed on the reinforcing plate. By arranging the blocking piece, the reciprocating motion of the voice coil is utilized to push the air in the loudspeaker to form heat exchange airflow, so that the heat dissipation capacity of the loudspeaker is greatly improved; the space occupied by the blocking sheet can be almost ignored, so that the loudspeaker is more suitable for ultrathin electronic equipment; the barrier sheet and the reinforcing plate, and the reinforcing plate and the vibrating diaphragm are simply and conveniently connected, and mass production is facilitated; durable and low use cost.

Description

Loudspeaker

Technical Field

The invention relates to the technical field of electroacoustic transducer devices, in particular to a loudspeaker.

Background

In the working process of the loudspeaker, the voice coil vibrates in an alternating mode, certain heat can be generated by friction between the voice coil and air and friction between the voice coil and the driving magnet, if the generated heat cannot be discharged in time, the driving magnet can generate a thermal demagnetization effect, and finally the magnetic performance of the driving magnet is reduced or the driving magnet is completely demagnetized.

Therefore, the heat dissipation problem of the speaker is always a research direction in the industry, and at present, the design space of the mobile terminal (including a computer, a tablet computer, a mobile phone, a wrist strap, and VR) is smaller and smaller, and the power is larger and larger, so that the heat diffusion is required to be performed in a small space to ensure that the performance of the device is not affected by high temperature. As shown in fig. 1, the patent with application number 201510707229.3 discloses a speaker module structure, in which heat dissipation fins capable of dissipating heat are arranged in a front cavity and a rear cavity, the heat of the rear cavity is conducted to the front cavity via the heat dissipation fins and exchanges air with the external environment through a sound outlet of the front cavity, so as to dissipate heat in a convection manner, and reduce the accumulation of heat inside the speaker to a certain extent. However, the speaker module disclosed in the patent still has two problems, i.e. the increase of the heat dissipation structure increases the overall weight of the speaker module, and deviates from the development direction of the speaker weight reduction; secondly, a relatively large space is required to arrange a heat dissipation structure to complete heat exchange.

Therefore, it is necessary to provide a speaker suitable for a slim electronic device and having a good heat dissipation effect.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the loudspeaker is suitable for ultrathin electronic equipment and has a good radiating effect.

In order to solve the technical problems, the invention adopts the technical scheme that: a loudspeaker comprises a voice coil, an annular vibrating diaphragm arranged above the voice coil, a blocking piece and an annular reinforcing plate, wherein the annular reinforcing plate is arranged along the circumferential direction of the vibrating diaphragm, and the blocking piece is arranged on one side surface, far away from the voice coil, of the reinforcing plate and covers the hollow area of the annular reinforcing plate; the blocking piece is partially fixed on the reinforcing plate.

The invention has the beneficial effects that: by arranging the blocking piece, the reciprocating motion of the voice coil is utilized to push the air in the loudspeaker to form heat exchange airflow, so that the heat dissipation capacity of the loudspeaker is greatly improved; the space occupied by the barrier sheet is almost negligible, so that the loudspeaker is more suitable for ultrathin electronic equipment.

Drawings

FIG. 1 is an exploded view of a prior art speaker configuration;

FIG. 2 is a schematic diagram of a speaker according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a speaker according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a speaker with a hidden barrier according to an embodiment of the present invention;

FIG. 5 is a cross sectional view of a barrier sheet according to a second embodiment of the present invention;

description of reference numerals:

1. a voice coil;

2. vibrating diaphragm;

3. a reinforcing plate;

4. a blocking sheet;

41. a first sheet;

42. a second sheet;

43. a flexible sheet;

5. a bonding area.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The most key concept of the invention is as follows: and a blocking sheet is arranged, and the reciprocating motion of the voice coil is utilized to push the air in the loudspeaker to form heat exchange airflow.

Referring to fig. 2 to 5, a speaker includes a voice coil, an annular diaphragm disposed above the voice coil, a blocking plate and an annular reinforcing plate, wherein the annular reinforcing plate is disposed along a circumferential direction of the diaphragm, and the blocking plate is disposed on a side surface of the reinforcing plate away from the voice coil and covers a hollow area of the annular reinforcing plate; the blocking piece is partially fixed on the reinforcing plate.

From the above description, the beneficial effects of the present invention are: by arranging the blocking piece, the reciprocating motion of the voice coil is utilized to push the air in the loudspeaker to form heat exchange airflow, so that the heat dissipation capacity of the loudspeaker is greatly improved; the space occupied by the barrier sheet is almost negligible, so that the loudspeaker is more suitable for ultrathin electronic equipment.

Further, the blocking piece and the reinforcing plate are fixed through bonding.

As can be seen from the above description, the barrier sheet and the reinforcing plate are simply and conveniently connected, which is beneficial to mass production.

Further, block and be equipped with the crease on the piece, block the piece around the crease can turn over the setting towards the direction of keeping away from the voice coil loudspeaker voice coil.

According to the description, the blocking piece is provided with the crease, so that the blocking piece can be folded more smoothly.

Furthermore, the reinforcing plate is a rectangular frame, and one side of the bottom surface of the barrier sheet is fixedly bonded with the top surface of one side of the rectangular frame.

According to the above description, the bonding area between the blocking piece and the reinforcing plate is smaller, and the air quantity which can pass through the hollow area of the reinforcing plate after the blocking piece is turned over is large, so that the heat exchange is facilitated.

Further, the hollow area of the diaphragm coincides with the hollow area of the reinforcing plate.

As can be seen from the above description, the hollow area of the diaphragm and the hollow area of the reinforcing plate coincide to facilitate the circulation of air inside the speaker.

Further, the barrier sheet comprises a first sheet, a second sheet and a flexible sheet; the first sheet is fixedly adhered to the reinforcing plate, and the second sheet is connected with the first sheet through the soft sheet.

As can be seen from the above description, the first sheet and the second sheet may be made of metal or other high-strength materials, so as to prevent the air backflow caused by the depression of the blocking sheet when the diaphragm moves in the direction away from the voice coil.

Further, the vibrating diaphragm is fixedly bonded with the reinforcing plate.

According to the description, the vibrating diaphragm and the reinforcing plate are simply and conveniently connected, and mass production is facilitated; and when the vibrating diaphragm or the reinforcing plate is damaged, the vibrating diaphragm or the reinforcing plate can be independently replaced, so that the use cost is favorably reduced.

Example one

Referring to fig. 2 to 4, a first embodiment of the present invention is: referring to fig. 2 and 3, a speaker includes a voice coil 1, an annular diaphragm 2 disposed above the voice coil 1, a blocking plate 4, and an annular reinforcing plate 3, where the annular reinforcing plate 3 is disposed along a circumferential direction of the diaphragm 2, and the blocking plate 4 is disposed on a side surface of the reinforcing plate 3 away from the voice coil 1 and covers a hollow area of the annular reinforcing plate 3.

The blocking piece 4 is partially fixed on the reinforcing plate 3, and in the embodiment, the blocking piece 4 and the reinforcing plate 3 are fixed by bonding. In other embodiments, the blocking piece and the reinforcing plate can be partially fixed in a fusion mode, and can be partially fixed through a buckling structure, even the blocking piece and the reinforcing plate can be integrally formed. Further, block and be equipped with the crease on the piece 4, block piece 4 around the crease can turn over the setting of rolling over towards the direction of keeping away from voice coil loudspeaker voice coil 1, set up the crease on blocking piece 4, can make and block that piece 4 turns over and turns over more smoothly. Preferably, the fold is provided close to the fixing area of the blocking tab 4 and the stiffening plate 3.

The barrier sheet 4 is made of a material with certain elasticity, both a metal material and a non-metal material are available, and only the barrier sheet 4 made of the metal material needs to be thinner, and the thinner metal barrier sheet can be folded, such as copper foil, silver foil and the like; various non-metallic materials can be used, such as rubber, plastic.

As shown in fig. 4, in the present embodiment, the reinforcing plate 3 is a rectangular frame, and one side of the bottom surface of the barrier 4 is fixedly bonded to the top surface of one side of the rectangular frame (bonding region 5, as shown in the figure). Further, the hollow area of the diaphragm 2 coincides with the hollow area of the reinforcing plate 3, which is favorable for the circulation of air inside the speaker.

The vibrating diaphragm 2 is fixedly bonded with the reinforcing plate 3.

The heat dissipation process of the loudspeaker is as follows: when the voice coil 1 drives the vibrating diaphragm 2 to move towards the direction far away from the barrier sheet 4, most of the area of the barrier sheet 4 can be folded along the crease on the barrier sheet 4, so that the cavity below the vibrating diaphragm 2 is communicated with the cavity above the vibrating diaphragm 2, and the vibrating diaphragm 2 continues to move towards the direction far away from the barrier sheet 4, so that the air in the cavity below the vibrating diaphragm 2 is forced to flow into the cavity above the vibrating diaphragm 2; when voice coil loudspeaker voice coil 1 drives vibrating diaphragm 2 and moves towards being close to 4 directions of blockking, block piece 4 and the laminating of stiffening plate 3, separate 2 below cavities of vibrating diaphragm and 2 top cavities of vibrating diaphragm, vibrating diaphragm 2 continues to move towards being close to 4 directions of blockking, blocks the air of 4 extrusion vibrating diaphragm 2 top cavities of piece, forces to receive the extrusion air to flow out from speaker phonate vent. In this way, heat is removed with the air from the cavity below the diaphragm 2 via the cavity above the diaphragm 2.

Example two

Referring to fig. 5, the second embodiment of the present invention is a further improvement on the structure of the barrier sheet on the basis of the first embodiment, and is different from the first embodiment in that: the barrier sheet 4 includes a first sheet 41, a second sheet 42, and a flexible sheet 43; the first sheet 41 is adhesively fixed to the reinforcing plate 3, and the second sheet 42 is connected to the first sheet 41 via the flexible sheet 43. The flexible sheet 43 functions similarly to the fold in the first embodiment, connects the first sheet 41 and the second sheet 42, and allows the first sheet 41 and the second sheet 42 to rotate relative to each other. The flexible sheet 43 may be made of polyester material, polyimide material, or other material with good bending performance, and more simply, the flexible sheet 43 may be an adhesive tape.

The barrier sheet 4 is designed in such a way that the benefits are: first thin slice 41, second thin slice 42 can adopt the material that intensity is higher to make, do not need this material to possess certain elasticity, for example copper, iron, PVC etc to the condition that stops piece 4 and appear sunken and lead to the air backward flow when avoiding vibrating diaphragm 2 to move towards deviating from voice coil 1 takes place.

In summary, the loudspeaker provided by the invention has the advantages that the barrier sheet is arranged, the reciprocating motion of the voice coil is utilized to push the air in the loudspeaker, so that the heat exchange airflow is formed, and the heat dissipation capability of the loudspeaker is greatly improved; the space occupied by the blocking sheet can be almost ignored, so that the loudspeaker is more suitable for ultrathin electronic equipment; the barrier sheet and the reinforcing plate, and the reinforcing plate and the vibrating diaphragm are simply and conveniently connected, and mass production is facilitated; durable and low use cost.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a loudspeaker, includes voice coil loudspeaker voice coil and locates the annular vibrating diaphragm of voice coil loudspeaker voice coil top, its characterized in that: the voice coil is arranged on the side surface of the vibrating diaphragm, and the blocking piece is arranged on the side surface of the vibrating diaphragm, which is far away from the voice coil, and covers the hollow area of the annular reinforcing plate; the reinforcing plate is a rectangular frame, and one side of the bottom surface of the blocking piece is fixed with the top surface of one side of the rectangular frame; stop to be equipped with the crease on the piece, stop the piece around the crease can turn over the setting towards the direction of keeping away from the voice coil loudspeaker voice coil.

2. The utility model provides a loudspeaker, includes voice coil loudspeaker voice coil and locates the annular vibrating diaphragm of voice coil loudspeaker voice coil top, its characterized in that: the voice coil is arranged on the side surface of the vibrating diaphragm, and the blocking piece is arranged on the side surface of the vibrating diaphragm, which is far away from the voice coil, and covers the hollow area of the annular reinforcing plate; the reinforcing plate is a rectangular frame, and one side of the bottom surface of the blocking piece is fixed with the top surface of one side of the rectangular frame; the barrier sheet comprises a first sheet, a second sheet and a flexible sheet; the first sheet is fixedly adhered to the reinforcing plate, and the second sheet is connected with the first sheet through the soft sheet.

3. The loudspeaker of claim 2, wherein: the vibrating diaphragm is fixedly bonded with the reinforcing plate.