CN219718468U

CN219718468U - Piston type loudspeaker

Info

Publication number: CN219718468U
Application number: CN202320725139.7U
Authority: CN
Inventors: 钟敏; 莫焕秋; 曾桂芳; 盘敏贤; 郭喜刚
Original assignee: Dongguan Tianlaizhiyin Electro Acoustic Product Co ltd
Current assignee: Dongguan Tianlaizhiyin Electro Acoustic Product Co ltd
Priority date: 2023-04-05
Filing date: 2023-04-05
Publication date: 2023-09-19
Anticipated expiration: 2033-04-05

Abstract

The utility model relates to the technical field of loudspeakers, in particular to a piston type loudspeaker, which comprises a support, wherein the support is annular, the top of the support is sequentially provided with a suspension edge and a planar vibrating diaphragm from bottom to top, the upper side and the lower side of the suspension edge are respectively attached to the bottom of the planar vibrating diaphragm and the top of the support, and the suspension edge is an annular elastomer; the piston type loudspeaker further comprises a U-shaped iron, the U-shaped iron is embedded into the middle of the support, the side wall of the U-shaped iron is fixedly attached to the inner wall of the support, and the attaching face of the hanging edge and the top of the support is lower than the end face of the inner side of the U-shaped iron embedded into the hanging edge. Compared with the suspension edge arranged in the prior art, the utility model has the advantages that the suspension edge is arranged under the planar vibrating diaphragm, so that the compression amount of the suspension edge is increased, the voice coil is pushed to move back and forth like a piston after being electrified, the planar vibrating diaphragm is pushed and pulled to move back and forth on the suspension edge, the back and forth movement distance of the planar vibrating diaphragm is increased, the amplitude is increased, and the sound is improved.

Description

Piston type loudspeaker

Technical Field

The utility model relates to the technical field of speakers, in particular to a piston type speaker.

Background

A speaker is a transducer device for converting an electric signal into an acoustic signal, which is a weaker device in an acoustic apparatus, and which is one of the most important components for acoustic effects. Among them, the variety of speakers is wide, and one of them is specifically as follows:

chinese patent document publication No. CN103428614a discloses a flat plate radiation vibration speaker, specifically discloses: the device comprises a magnetic circuit driving system, a supporting system and a flat vibration system, wherein the flat vibration system comprises a flat vibration film, an elastic sheet and a coil, the coil in the flat vibration system generates force for moving up and down through interaction of a permanent magnetic field generated in the magnetic circuit driving system and an electromagnetic field generated in the flat vibration system, and the coil is connected with the flat vibration film so as to drive the flat vibration film to do piston motion, thereby pushing surrounding air to vibrate and generating sound. The flat plate is used as a sounding body, the coil is used as a driving force, and the radiating sound wave propagates in a nondirectional mode, so that the sound field coverage is more uniform.

However, the suspension edges of the conventional loudspeaker are all arranged at the periphery of the flat diaphragm to support the flat diaphragm which moves back and forth, and the suspension edges are made of elastic materials. However, the amplitude of the back and forth movement of the flat diaphragm is smaller due to the arrangement of the overhanging edge on the periphery of the flat diaphragm, and the amplitude of the flat diaphragm directly affects the sound, so that in order to increase the vibration amplitude of the flat diaphragm, a piston type loudspeaker is provided.

Disclosure of Invention

The utility model aims to provide a piston type loudspeaker aiming at the defects of the prior art so as to solve the technical problems of smaller vibration amplitude and the like of the conventional loudspeaker diaphragm.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the piston type loudspeaker comprises a support, wherein the support is annular, a suspension edge and a planar vibrating diaphragm are sequentially arranged at the top of the support from bottom to top, the upper side and the lower side of the suspension edge are respectively attached to the bottom of the planar vibrating diaphragm and the top of the support, and the suspension edge is an annular elastic body; the piston type loudspeaker further comprises a U-shaped iron, the U-shaped iron is embedded into the middle of the support, the side wall of the U-shaped iron is fixedly attached to the inner wall of the support, and the attaching face of the hanging edge and the top of the support is lower than the end face of the inner side of the U-shaped iron embedded into the hanging edge.

Further, the U-shaped iron comprises a bottom plate and side plates, wherein the two side plates are symmetrically arranged on two sides of the bottom plate in a left-right mode and form a cavity with an upward opening together with the bottom plate.

Further, the planar diaphragm is a rectangular film.

Further, be equipped with the drive module who makes plane vibrating diaphragm vibration on the bottom plate, drive module is including magnet, washer and voice coil loudspeaker voice coil, and magnet fixed setting is on the bottom plate and is arranged in the cavity middle part, and the washer setting is at the magnet top, and the washer forms magnetic gap with between the curb plate inside wall all around, and the voice coil loudspeaker voice coil links to each other and part is arranged in magnetic gap with plane vibrating diaphragm bottom central authorities.

Further, the voice coil is a rectangular frame.

Further, air outlets are formed between the front side and the rear side of the U-shaped iron and the inner side wall of the bracket.

The utility model has the beneficial effects that: compared with the suspension edge arranged in the prior art, the utility model has the advantages that the suspension edge is arranged under the planar vibrating diaphragm, so that the compression amount of the suspension edge is increased, the voice coil is pushed to move back and forth like a piston after being electrified, the planar vibrating diaphragm is pushed and pulled to move back and forth on the suspension edge, the back and forth movement distance of the planar vibrating diaphragm is increased, the amplitude is increased, and the sound is improved. And the joint surface of the suspension edge and the top of the bracket is lower than the end surface of the inner side of the U-shaped iron embedded suspension edge, so that the height of the top of the bracket is reduced, the thickness of the suspension edge is increased, and the compression amount of the suspension edge is further improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic diagram of the internal structure of the present utility model.

Fig. 3 is an exploded view of the present utility model.

Fig. 4 is a schematic structural view of the U-shaped iron of the present utility model.

The reference numerals include:

1. a bracket; 2. u-shaped iron; 201. a bottom plate; 202. a side plate; 3. a magnet; 4. washer; 5. a hanging edge; 6. a planar diaphragm; 7. and a voice coil.

Detailed Description

The pistonic loudspeaker according to the utility model is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-3, an embodiment of a piston type loudspeaker of the present utility model includes a support 1, where the support 1 is in a ring shape, a suspension edge 5 and a planar vibrating diaphragm 6 are sequentially disposed on the top of the support 1 from bottom to top, and the upper and lower sides of the suspension edge 5 are respectively attached to the bottom of the planar vibrating diaphragm 6 and the top of the support 1, the planar vibrating diaphragm 6 is a rectangular film, and the suspension edge 5 is an annular elastic body. Under the action of the suspension edge 5, the plane diaphragm 6 can move back and forth on the bracket 1 along with the amplitude of the elastic deformation of the suspension edge 5, so that air is pushed to make the plane diaphragm sound; and the structure that the suspension edge 5 set up in plane vibrating diaphragm 6 below compares with prior art (suspension edge sets up in the dull and stereotyped vibrating diaphragm periphery), has increased the compression volume of suspension edge 5 for the distance of plane vibrating diaphragm 6 back and forth movement increases, and the distance of plane vibrating diaphragm 6 motion has decided the size of amplitude again, and the sound is bigger when the amplitude is bigger, therefore the plane vibrating diaphragm 6 back and forth movement distance increases, and the sound has improved.

The utility model also comprises a U-shaped iron 2, a magnet 3, a washer 4 and a voice coil 7, wherein the U-shaped iron 2 is composed of a bottom plate 201 and side plates 202, the two side plates 202 are symmetrically arranged on two sides of the bottom plate 201 in a left-right mode, a cavity with an upward opening is formed with the bottom plate 201, and the outer side wall of the side plate 202 is fixedly arranged with the inner side wall of the bracket 1. Wherein, magnet 3 is fixed to be set up on bottom plate 201 and place the cavity middle part in, and washer 4 sets up at magnet 3 top, and U type iron 2 and washer 4 all play magnetic conduction to form the magnetic gap between washer 4 and the curb plate 202 inside wall all around, voice coil 7 links to each other with plane vibrating diaphragm 6 bottom central authorities and the part is arranged in the magnetic gap, and its voice coil 7 is rectangle framework also.

The magnetic gap provides a uniform permanent magnetic field required by the movement of the voice coil 7, when current flows through the voice coil 7, an electromagnetic field is generated around the voice coil 7, the positive pole of the voice coil 7 attracts with the negative pole of the permanent magnetic field, and conversely, the negative pole repels with the negative pole of the permanent magnetic field; when the current direction of the voice coil 7 is changed to change the polarity, the magnetic force between the voice coil 7 and the permanent magnet is also changed, and the current direction of the voice coil 7 is continuously changed to push the voice coil 7 to move back and forth like a piston, and when the voice coil 7 moves, the planar vibrating diaphragm 6 is pushed and pulled to move back and forth on the hanging edge 5, so that air in front of a loudspeaker is vibrated, and sound waves are generated.

As shown in fig. 2, in order to further increase the compression amount of the hanging edge 5, the joint surface of the hanging edge 5 and the top of the bracket 1 is lower than the top surface of the side plate 202, so that the height of the top of the bracket 1 is reduced, and the thickness of the hanging edge 5 is increased.

When the plane diaphragm 6 moves back and forth, two sound waves are generated, when the plane diaphragm 6 moves reversely, sound waves are also generated, as shown in fig. 1, air outlets are formed between the front side and the rear side of the U-shaped iron 2 and the inner side wall of the bracket 1, and when the plane diaphragm 6 moves reversely, the sound waves are pushed out from the air outlets, so that the whole sound level is enhanced.

In view of the above, the present utility model has the above-mentioned excellent characteristics, so that it can be used to improve the performance and practicality of the prior art, and is a product with great practical value.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. A pistonic loudspeaker comprising a support (1), characterized in that: the support (1) is annular, a suspension edge (5) and a plane vibrating diaphragm (6) are sequentially arranged at the top of the support (1) from bottom to top, the upper side and the lower side of the suspension edge (5) are respectively attached to the bottom of the plane vibrating diaphragm (6) and the top of the support (1), and the suspension edge (5) is an annular elastic body; the piston type loudspeaker further comprises a U-shaped iron (2), wherein the U-shaped iron (2) is embedded into the middle of the support (1), the side wall of the U-shaped iron (2) is fixedly attached to the inner wall of the support (1), and the attaching surface of the hanging edge (5) and the top of the support (1) is lower than the end surface of the inner side of the U-shaped iron (2) embedded into the hanging edge (5).

2. A pistonic speaker as set forth in claim 1, wherein: the U-shaped iron (2) comprises a bottom plate (201) and side plates (202), wherein the two side plates (202) are symmetrically arranged on two sides of the bottom plate (201) in a left-right mode and form a cavity with an upward opening together with the bottom plate (201).

3. A pistonic speaker as set forth in claim 1, wherein: the plane diaphragm (6) is a rectangular film.

4. A pistonic speaker as set forth in claim 2, wherein: be equipped with the drive module who makes plane vibrating diaphragm (6) vibration on bottom plate (201), drive module is including magnet (3), washer (4) and voice coil (7), and magnet (3) are fixed to be set up on bottom plate (201) and arrange the cavity middle part in, and washer (4) set up at magnet (3) top, form magnetic gap between washer (4) all around and curb plate (202) inside wall, voice coil (7) link to each other and the part is arranged in magnetic gap with plane vibrating diaphragm (6) bottom central authorities.

5. A pistonic speaker as set forth in claim 4, wherein: the voice coil (7) is a rectangular frame.

6. A pistonic speaker as set forth in claim 2, wherein: air outlets are formed between the front side and the rear side of the U-shaped iron (2) and the inner side wall of the bracket (1).