CN209390356U

CN209390356U - Loudspeaker

Info

Publication number: CN209390356U
Application number: CN201822278777.0U
Authority: CN
Inventors: 肖波; 令狐荣林; 刘晓东
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2019-09-13
Anticipated expiration: 2028-12-30

Abstract

The utility model relates to a kind of loudspeakers, it includes magnetic circuit system and vibrational system, the magnetic circuit system includes magnetic yoke, magnet steel and pole piece, magnet steel side space is magnetic gap, the vibrational system includes vibrating diaphragm and voice coil, the voice coil is suspended in the magnetic gap, and the pole piece includes upper surface, lower surface, bleeder port and air guide groove, and the air guide groove is connected to the bleeder port and the magnetic gap.The utility model has the beneficial effects that: loudspeaker provided by the utility model is by being arranged through the bleeder port of pole piece and being recessed the air guide groove to be formed from the following table of the pole piece surface direction that faces upward, admittance gas groove is connected to bleeder port and magnetic gap, to enhance the circulation of the gas between vibrating diaphragm and pole piece, reduce air pressure between vibrating diaphragm and pole piece, it accelerates the heat between vibrating diaphragm and pole piece and distributes speed, and then improve the acoustical behavior of loudspeaker.

Description

Loudspeaker

[technical field]

The utility model relates to a kind of electroacoustic switch technology field more particularly to a kind of loudspeakers.

[background technique]

With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Currently, the function of mobile phone is extremely various, one of them is just The music function of high-quality, therefore, the loudspeaker for playing sound be widely applied Intelligent mobile equipment till now it In.

In the related art, loudspeaker includes magnetic circuit system and vibrational system, magnetic circuit system include magnetic yoke, be set to it is described Magnet steel in magnetic yoke and the pole piece for being attached at the magnet steel surface, vibrational system includes the voice coil of vibrating diaphragm and driving diaphragm oscillations, Voice coil is arranged around magnet steel, and vibrating diaphragm can form air pressure in the gap between vibrating diaphragm and pole piece, in vibrating diaphragm in vibration Air pressure is bigger at centre, and moreover, the heat that voice coil distributes when working also is difficult to disperse in time between vibrating diaphragm and pole piece, seriously Influence the acoustical behavior of loudspeaker.

Therefore, a kind of new loudspeaker solution above-mentioned technical problem must be provided by having in fact.

[utility model content]

The purpose of this utility model is to provide a kind of loudspeakers, solve vibrating diaphragm and the pole of loudspeaker in the related technology Air pressure is big between core, and heat is difficult to the technical issues of dispersing in time.

In order to solve the above-mentioned technical problem, the utility model provides a kind of loudspeaker comprising magnetic circuit system and vibration System, the magnetic circuit system include magnetic yoke, the magnet steel being set in the magnetic yoke and the pole piece being attached on the magnet steel, described Magnet steel side space is magnetic gap, and the vibrational system includes vibrating diaphragm and the voice coil for driving the diaphragm oscillations, and the voice coil is outstanding It is placed in the magnetic gap, the pole piece includes the upper surface of vibrating diaphragm described in face, with the upper surface is oppositely arranged and abuts Lower surface in the magnet steel, the bleeder port through the upper surface and the lower surface and from the following table towards on described Surface direction is recessed the air guide groove to be formed, and the air guide groove is connected to the bleeder port and the magnetic gap.

Preferably, the loudspeaker further includes frame, and the magnetic circuit system and the vibrational system are contained in the basin In frame.

Preferably, the bleeder port is located at the center of the pole piece.

Preferably, the bleeder port is in rectangle.

Preferably, the quantity of the air guide groove is four, central axis of four air guide grooves about the pole piece It is symmetrical arranged.

Preferably, the pole piece is in rectangle, and four air guide grooves are arranged along the diagonal line of the pole piece.

Preferably, the magnetic circuit system further includes setting up two secondary magnet steel for being placed in the magnet steel opposite sides separately and being attached at The consequent pole core on two secondary magnet steel surfaces, interval forms the magnetic gap, the sound between the pair magnet steel and the magnet steel Snare is located at the magnet steel periphery and is arranged respectively with the magnet steel and the secondary magnet steel interval.

Preferably, the vibrational system further includes centring disk, and the voice coil is fixed in described centring disk one end, another The frame is fixed at end.

Preferably, the vibrational system further includes auxiliary vibrating diaphragm, and it is separate that the voice coil is fixed in described auxiliary vibrating diaphragm one end One end of the vibrating diaphragm, the other end are fixed on the frame.

Preferably, the loudspeaker further includes the Air Filter being fixedly arranged below the frame.

The utility model has the beneficial effects that: loudspeaker provided by the utility model is by setting through the discouraged of pole piece Hole and it is recessed the air guide groove to be formed from the following table of the pole piece surface direction that faces upward, admittance gas groove is connected between bleeder port and magnetic Gap reduces air pressure between vibrating diaphragm and pole piece, accelerates vibrating diaphragm and pole to enhance the gas circulation between vibrating diaphragm and pole piece Heat between core distributes speed, and then improves the acoustical behavior of loudspeaker.

[Detailed description of the invention]

Fig. 1 is the stereogram exploded view of the utility model loudspeaker；

Fig. 2 is the cross-sectional view of the utility model loudspeaker；

Fig. 3 is the perspective view of the utility model pole piece.

[specific embodiment]

The utility model is described in further detail with embodiment with reference to the accompanying drawing.Following embodiment is for illustrating The utility model, but be not intended to limit the scope of the present invention.

It please refers to shown in Fig. 1 and 2, the utility model provides a kind of loudspeaker 100 comprising frame 1, magnetic circuit system 2 With vibrational system 3, the magnetic circuit system 2 and the vibrational system 3 are contained in the frame 1.The magnetic circuit system 2 is for driving Move 3 vibration sounding of vibrational system.

The frame 1 is made of plastics, in specific embodiment of the present utility model, 1 rectangular frame of frame Structure.

The magnetic circuit system 2 includes en plaque magnetic yoke 21, the magnet steel 22 being set in the magnetic yoke 21, is attached at the magnetic Pole piece 23 on steel 22 sets up two secondary magnet steel 24 for being placed in 22 opposite sides of magnet steel separately and is attached at two secondary magnet steel The consequent pole core 25 on 24 surfaces.Interval forms magnetic gap 26 between the pair magnet steel 24 and the magnet steel 22, i.e. the magnet steel 22 weeks Side space is the magnetic gap 26.The long side setting of two secondary corresponding magnet steel 22 of magnet steel 24.

The vibrational system 3 includes that vibrating diaphragm 31, voice coil 32, centring disk 33 and auxiliary vibrating diaphragm 34, the voice coil 32 are used It is vibrated in the driving vibrating diaphragm 31.31 lower surface of vibrating diaphragm is fixed in described 32 one end of voice coil, and the other end is suspended in the magnetic In gap 26, the voice coil 32 is set in 22 periphery of magnet steel and sets respectively with the magnet steel 22 and the secondary interval of magnet steel 24 It sets.The voice coil 32 is fixed in described 33 one end of centring disk, and the other end is fixed on the centring disk 33 of the frame 1, described The one end of the voice coil 32 far from the vibrating diaphragm 31 is fixed in auxiliary 34 one end of vibrating diaphragm, and the other end is fixed on the frame 1.It is described It assists centring disk 33 described in 34 face of vibrating diaphragm to be arranged and is located at 33 lower section of centring disk.

In conjunction with shown in Fig. 3, the pole piece 23 includes the upper surface 231 and the upper surface 231 of vibrating diaphragm 31 described in face It is oppositely arranged and is connected to the lower surface 232 of the magnet steel 22, losing heart through the upper surface 231 and the lower surface 232 Hole 233 and the air guide groove 234 to be formed that is recessed from the lower surface 232 to 231 direction of upper surface, the air guide groove The 234 connections bleeder port 233 and the magnetic gap 26.By the way that the bleeder port 233 and the air guide groove 234 is arranged, from And the circulation of the gas between the vibrating diaphragm 31 and the pole piece 23 is enhanced, it reduces between the vibrating diaphragm 31 and the pole piece 23 Air pressure, the heat accelerated between the vibrating diaphragm 31 and the pole piece 23 distribute speed.

The bleeder port 233 is in rectangle, and is located at the center of the pole piece 23, is ensured below 31 centre of vibrating diaphragm Air-flow is uniform, prevents the vibrating diaphragm 31 from generating polarization.

The quantity of the air guide groove 234 is four, central axis of four air guide grooves 234 about the pole piece 23 It is symmetrical arranged, the pole piece 23 is in rectangle, and four air guide grooves 234 are arranged along the diagonal line of the pole piece 23, allows air-flow It is discharged into the magnetic gap 26 from four angles of the pole piece 23, reduces influence of the air-flow to the vibrating diaphragm 31.

The loudspeaker 100 further includes the Air Filter 4 for being fixedly arranged on 1 lower section of frame, and the Air Filter 4 is two, and It is divided into the opposite end of the frame 1.

Above-described is only the better embodiment of the utility model, it should be noted here that for the common of this field For technical staff, without departing from the concept of the present invention, improvement can also be made, but these belong to this The protection scope of utility model.

Claims

1. a kind of loudspeaker comprising magnetic circuit system and vibrational system, the magnetic circuit system include magnetic yoke, are set to the magnetic yoke On magnet steel and the pole piece that is attached on the magnet steel, magnet steel side space be magnetic gap, the vibrational system includes vibration Film and the voice coil for driving the diaphragm oscillations, the voice coil are suspended in the magnetic gap, which is characterized in that the pole piece includes On the upper surface of vibrating diaphragm described in face and the upper surface are oppositely arranged and are connected to the lower surface of the magnet steel, run through described The bleeder port of surface and the lower surface and it is recessed the air guide groove to be formed from the following table towards the upper surface direction, institute It states air guide groove and is connected to the bleeder port and the magnetic gap.

2. loudspeaker according to claim 1, which is characterized in that the loudspeaker further includes frame, the magnetic circuit system It is contained in the frame with the vibrational system.

3. loudspeaker according to claim 1, which is characterized in that the bleeder port is located at the center of the pole piece.

4. loudspeaker according to claim 3, which is characterized in that the bleeder port is in rectangle.

5. loudspeaker according to claim 3, which is characterized in that the quantity of the air guide groove is four, described in four Substantially symmetrical about its central axis setting of the air guide groove about the pole piece.

6. loudspeaker according to claim 5, which is characterized in that the pole piece is in rectangle, four air guide groove edges The diagonal line of the pole piece is arranged.

7. loudspeaker according to claim 1, which is characterized in that the magnetic circuit system further includes setting up separately to be placed in the magnet steel Two of opposite sides secondary magnet steel and the consequent pole core for being attached at two secondary magnet steel surfaces, the pair magnet steel and the magnet steel it Between interval form the magnetic gap, the voice coil is set in the magnet steel periphery and respectively between the magnet steel and the secondary magnet steel Every setting.

8. loudspeaker according to claim 2, which is characterized in that the vibrational system further includes centring disk, described fixed The voice coil is fixed in heart branch piece one end, and the other end is fixed on the frame.

9. the loudspeaker according to claim 2 or 8, which is characterized in that the vibrational system further includes auxiliary vibrating diaphragm, described The one end of the voice coil far from the vibrating diaphragm is fixed in auxiliary vibrating diaphragm one end, and the other end is fixed on the frame.

10. loudspeaker according to claim 2, which is characterized in that the loudspeaker further includes being fixedly arranged under the frame The Air Filter of side.