CN210093545U

CN210093545U - Moving-coil high-frequency loudspeaker

Info

Publication number: CN210093545U
Application number: CN201921407114.2U
Authority: CN
Inventors: 赵玉锁
Original assignee: Guangzhou Zhanxin Audio Equipment Co Ltd
Current assignee: Guangzhou Zhanxin Audio Equipment Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-02-18
Anticipated expiration: 2029-08-28

Abstract

The utility model discloses a moving coil formula tweeter, including the back lid, back lid turn-ups position down orientation is equipped with polar plate, magnet and T type iron in proper order, be equipped with clamping device between back lid and the last polar plate, dome form sound membrane periphery is equipped with flat dangling limit and arranges in between clamping device, and binding post passes through the lead-out wire and is connected with the voice coil loudspeaker voice coil, sound membrane dome border is just close to the position bonding of dangling limit towards the terminal surface of T type iron orientation and has the voice coil loudspeaker voice coil, and in the magnetic gap between the bellying of T type iron and the last polar plate was arranged in to the voice coil loudspeaker voice coil, this speaker can effectively avoid the harmful division vibration of sound membrane dangling limit, reduces the distortion, promotes the extensibility of hyperfrequency, makes the high frequency range wideer to promote tweeter's tone quality greatly.

Description

Moving-coil high-frequency loudspeaker

Technical Field

The utility model relates to a speaker equipment technical field especially relates to a moving coil formula high frequency loudspeaker.

Background

A loudspeaker is a transducer device that converts an electrical signal into an acoustic signal, which, during the signal conversion process, the vibrating basin is driven to vibrate up and down by the acting force of the voice coil and the magnetic field, generates resonance with the surrounding air to make sound, however, the sound film of the general high-frequency loudspeaker is made of aluminum film, titanium film or high molecular film, when the sound is produced by vibration, the supporting suspension edge for ensuring the normal work of the device is also a flat suspension edge made of aluminum, titanium or high polymer film material, the structure is simple, the defects are that the linear vibration amplitude is small, the suspended edge can sink or float, the voice coil deviates from the normal position, linear distortion is caused, the suspension edge of the voice coil generates asynchronous harmful vibration with the sound film in a high-frequency section due to lack of damping, high-frequency characteristics are influenced, peak valley of a frequency response curve is formed, linear distortion and nonlinear distortion are caused, and the extensibility of an ultrahigh frequency section is not good.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the problem that exists among the above-mentioned, provide a moving coil tweeter, this speaker can effectively avoid the sound membrane to support the harmful vibration of cutting apart on outstanding limit, reduce linear and nonlinear distortion, promote the extensibility of hyperfrequency, make the high frequency range wideer to improve tweeter's tone quality greatly.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a moving-coil high-frequency loudspeaker, which comprises a rear cover, wherein the rear cover is a cavity structure with an opening at one end, a flanging is arranged at the opening position of the rear cover, and the flanging is provided with a wiring terminal, the flanging position of the rear cover is provided with an upper polar plate, a magnet and T-shaped iron in sequence in the downward direction, a clamping device is arranged between the rear cover and the upper polar plate, the convex part of the T-shaped iron is placed towards the direction of the rear cover, and the end surface of the raised part of the T-shaped iron is provided with a groove for placing the phase plug, a dome-shaped sound film is arranged above the outer surface of the phase plug, a gap is arranged between the sound film and the phase plug, a flat suspending edge is arranged at the outer edge of the dome-shaped sound film and is arranged between the clamping devices, and the voice coil is bonded at the position, which faces the top ball edge of the T-shaped iron and is close to the suspended edge, of the top ball edge of the voice film, and the voice coil is arranged in a magnetic gap between the bulge of the T-shaped iron and the upper polar plate.

Preferably, the clamping device is composed of an elastic upper clamping piece and an elastic lower clamping piece which is tightly attached to the upper clamping piece, the upper clamping piece is tightly attached to the flanging position of the rear cover, the lower clamping piece is tightly attached to the upper pole plate, and the flat suspended edge of the sound membrane is arranged between the upper clamping piece and the lower clamping piece.

Preferably, gaps are arranged between the upper polar plate and the bulge parts of the magnets and the T-shaped iron.

Preferably, the gap between the sound film and the phase plug is 0.5-1.2 mm.

Preferably, the sound absorption cotton is arranged on the bottom surface inside the rear cover.

Preferably, the upper clamping piece and the lower clamping piece are made of high-elasticity damping materials. The linear vibration range of the sound film can be enlarged, and distortion can be reduced.

Compared with the prior art, the utility model discloses the beneficial effect who has does: the rear cover of this speaker is equipped with clamping device with between the polar plate, the rigidity dangling limit that sound membrane outside border was equipped with simultaneously arranges in between clamping device, thereby make the rigidity dangling limit of sound membrane live like the general clamping device parcel of sandwich structure, the rigidity dangling limit of during operation sound membrane does not produce tensile deformation, and make the upper and lower clamping piece device of parcel rigidity dangling limit produce compression or tensile, it is further, clamping device adopts high elasticity damping material, elastic material's vibration damping is big, can effectively avoid the harmful of sound membrane rigidity dangling limit to cut apart the vibration, reduce the distortion of speaker, promote the extensibility of hyperfrequency, make the high frequency range wideer, thereby promote high frequency speaker's tone quality greatly.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic cross-sectional view of a moving-coil tweeter according to the present invention;

fig. 2 is a partial enlarged view of a moving-coil tweeter according to the present invention.

Description of the drawings: 1. a rear cover; 2. sound-absorbing cotton; 3. a wiring terminal; 4. an upper polar plate; 5. a magnet; 6. t-type iron; 7. a clamping device; 701. an upper clamping piece; 702. a lower clamping piece; 8. a phase plug; 9. a sound membrane; 10. a voice coil.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The utility model discloses at the concrete implementation as follows: as shown in fig. 1-2, a moving-coil tweeter comprises a back cover 1, the back cover 1 is a cavity structure with an opening at one end, the back cover 1 is provided with sound-absorbing cotton 2 at the inner bottom surface, the back cover 1 is provided with a flanging at the opening outward, the flanging is provided with a connecting terminal 3, the back cover 1 is provided with an upper polar plate 4, a magnet 5 and a T-shaped iron 6 at the flanging downward direction, gaps are provided between the upper polar plate 4 and the protruding parts of the magnet 5 and the T-shaped iron 6, a clamping device 7 is provided between the back cover 1 and the upper polar plate 4, the clamping device 7 is made of high-elasticity damping material, the protruding parts of the T-shaped iron 6 are arranged towards the back cover 1, the end surface of the protruding parts of the T-shaped iron 6 is provided with a groove for placing a phase plug 8, a sound film 9 is provided above the outer surface of the phase plug 8, a gap is provided between the sound film 9 and the phase plug 8, the gap between the sound film 9 and, the outer edge of the sound membrane 9 is provided with a flat plate-shaped suspension edge arranged between clamping devices 7, the voice coil 10 is connected with the connecting terminal 3, the ball top edge of the sound membrane 9 faces the end face of the direction of the T-shaped iron 6 and is bonded with the voice coil 10 at a position close to the flat plate-shaped suspension edge, the voice coil 10 is arranged between the bulge part of the T-shaped iron 6 and the upper pole plate 4, the clamping devices 7 are composed of an upper clamping sheet 701 and a lower clamping sheet 702 tightly attached to the upper clamping sheet 701, the upper clamping sheet 701 is tightly attached to the flanging of the rear cover 1, the lower clamping sheet 702 is tightly attached to the upper pole plate 4, the flat plate-shaped suspension edge of the sound membrane 9 is arranged between the upper clamping sheet 701 and the lower clamping sheet 702, so that the suspension edge of the sound membrane 9 is wrapped by the clamping devices 7 like a sandwich structure, the flat plate-shaped suspension edge of the sound membrane 9 does not generate tensile deformation during operation, meanwhile, the vibration damping of the elastic material is large, harmful segmentation vibration of the rigid overhanging edge of the sound film can be effectively avoided, distortion is reduced, the extensibility of ultrahigh frequency is improved, the high-frequency range is wider, and therefore the tone quality of the high-frequency loudspeaker is greatly improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A moving-coil tweeter, comprising: including the hou gai, the back lid is one end and takes open cavity structures, the uncovered position of back lid is equipped with the turn-ups outwards, and installs binding post on the turn-ups, back lid turn-ups position is equipped with polar plate, magnet and T type iron down direction in proper order, be equipped with clamping device between back lid and the last polar plate, the bellying of T type iron is placed towards the direction of back lid, and the bellying terminal surface of T type iron is equipped with the recess that is used for placing the phase place stopper, phase place stopper external surface top is equipped with dome form sound membrane, and is equipped with the clearance between sound membrane and the phase place stopper, dome form sound membrane outer border is equipped with flat suspended edge and arranges in between the clamping device, sound membrane dome border is just to be close to the position bonding of suspended edge of T type iron orientation and has the voice coil loudspeaker voice coil, and the voice coil loudspeaker coil is arranged in the magnetic gap between the bellying of T type iron and the last polar plate.

2. A moving coil tweeter according to claim 1 wherein: the clamping device is composed of an elastic upper clamping piece and an elastic lower clamping piece, the elastic lower clamping piece is tightly attached to the upper clamping piece, the upper clamping piece is tightly attached to the flanging position of the rear cover, the lower clamping piece is tightly attached to the upper polar plate, and the flat suspended edge of the sound membrane is arranged between the upper clamping piece and the lower clamping piece.

3. A moving coil tweeter according to claim 1 wherein: gaps are arranged among the upper polar plate, the magnet and the T-shaped iron lug boss.

4. A moving coil tweeter according to claim 1 wherein: the gap between the sound film and the phase plug is 0.5-1.2 mm.

5. A moving coil tweeter according to claim 1 wherein: the sound-absorbing cotton is arranged on the bottom surface inside the rear cover.

6. A moving coil tweeter according to claim 1 wherein: the upper clamping piece and the lower clamping piece are made of high-elasticity damping materials.