CN210431868U

CN210431868U - Loudspeaker

Info

Publication number: CN210431868U
Application number: CN201921613604.8U
Authority: CN
Inventors: 李小龙; 王书晓
Original assignee: Goertek Inc
Current assignee: Goertek Inc; Weifang Goertek Electronics Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-04-28
Anticipated expiration: 2029-09-25

Abstract

The utility model belongs to the technical field of acoustic products, in particular to a loudspeaker, which comprises a basin frame, a magnetic circuit system fixed in a cavity enclosed by the basin frame and a vibration system, wherein the vibration system comprises a vibrating diaphragm fixedly connected at the port of the basin frame and sunken towards one side of the magnetic circuit system; the diaphragm is characterized by further comprising a centering support sheet fixedly connected to the arc top of the diaphragm, an axial hole is formed in the magnetic circuit system corresponding to the centering support sheet, and the centering support sheet is inserted into the axial hole and is fixedly connected with the magnetic circuit system. Because vibration system's vibrating diaphragm is sunken to magnetic circuit one side, centering disk fixed connection on the vibrating diaphragm and insert the axial downthehole with magnetic circuit fixed connection, can reduce the speaker at the ascending size in vibration direction of vibration system, the utility model discloses a great problem of current speaker height ratio in vibration direction of vibration system has been solved to the speaker, and the speaker of being convenient for develops to the flattening.

Description

Loudspeaker

Technical Field

The utility model belongs to the technical field of the acoustics product, especially, relate to a speaker.

Background

The existing conventional loudspeaker is an acoustic product which converts an electric signal into a sound signal, and generally comprises a magnetic circuit system fixed in a cavity surrounded by a basin frame and a vibration system arranged at the port of the basin frame, wherein when alternating current is introduced into the loudspeaker, a voice coil of the vibration system is subjected to Lorentz force in an electromagnetic field formed by current and a magnetic circuit, so that the vibration system is pushed to move up and down, and then air is driven to vibrate and produce sound. In order to facilitate the vibration of the vibration system, a centering support sheet is arranged in the cavity surrounded by the basin frame.

The vibration systems of the loudspeaker with the structure are stacked layer by layer, and all the components of the vibration systems are sequentially stacked in the height direction, so that the space is not reasonably utilized in the height direction, and the height of the loudspeaker unit is limited in a space-limited place. With the development of technology, electronic products are developed towards miniaturization, intellectualization and flattening, and the requirements for the height of a loudspeaker are more strict, so that the reduction of the height of the product becomes a new development trend on the premise of not losing the performance of the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a loudspeaker aims at solving the great problem of current loudspeaker height ratio in vibration system's vibration direction, and the loudspeaker of being convenient for develops to the platyzization.

The utility model discloses a loudspeaker, which comprises a frame, a magnetic circuit system fixed in a cavity enclosed by the frame, and a vibration system, wherein the vibration system comprises a vibrating diaphragm fixedly connected at the port of the frame and sunken towards one side of the magnetic circuit system; the diaphragm is characterized by further comprising a centering support sheet fixedly connected to the arc top of the diaphragm, an axial hole is formed in the magnetic circuit system corresponding to the centering support sheet, and the centering support sheet is inserted into the axial hole and fixedly connected with the magnetic circuit system.

As an improvement, the centering support piece comprises a cylinder body with one end fixedly connected to the arc top of the vibrating diaphragm, and a connecting ring arranged at one end of the cylinder body far away from the vibrating diaphragm, wherein the outer peripheral side of the connecting ring is bonded to the inner side wall of the axial hole.

As an improvement, a transition ring is connected between the inner ring side of the connecting ring and the end part of the cylinder body, and the cylinder body, the transition ring and the connecting ring are connected into a whole.

As an improvement, the cross section of the transition ring is arc-shaped, and the transition ring protrudes to the side far away from the diaphragm.

As an improvement, a plurality of air holes are arranged on the wall of the barrel body, and the total area of the air holes accounts for 40-50% of the area of the barrel wall of the barrel body.

As an improvement, the basin frame is in a conical barrel shape, the vibrating diaphragm is fixed at a large port of the basin frame, and the magnetic circuit system is fixed at a small port of the basin frame.

As an improvement, the magnetic circuit system comprises a U-shaped iron fixedly connected with a small port of the basin stand, a main magnet fixed on the U-shaped iron, a washer fixed on the main magnet, and an auxiliary magnet fixed on one side of the main magnet far away from the washer, wherein the auxiliary magnet is correspondingly provided with an auxiliary magnet through hole, a washer through hole is arranged on the washer, a main magnet through hole is arranged on the main magnet, and a bottom plate through hole is arranged on a bottom plate of the U-shaped iron.

As an improvement, the bottom plate of the U-shaped iron is arranged in a plane shape, and the voice coil of the vibration system is arranged between the side wall of the U-shaped iron and the magnetic circuit system.

As an improvement, the connecting ring is bonded with the inner side wall of the secondary magnet through hole.

As an improvement, the cross-sectional area of the main magnet through hole accounts for 25% -30% of the area of the end face of the main magnet.

Due to the adoption of the technical scheme, the loudspeaker comprises a basin frame, a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are fixed in a cavity defined by the basin frame; the diaphragm is characterized by further comprising a centering support sheet fixedly connected to the arc top of the diaphragm, an axial hole is formed in the magnetic circuit system corresponding to the centering support sheet, and the centering support sheet is inserted into the axial hole and is fixedly connected with the magnetic circuit system. Because vibration system's vibrating diaphragm is sunken to magnetic circuit one side, centering branch piece fixed connection on the arc top of vibrating diaphragm and insert the axial downthehole with magnetic circuit fixed connection, can reduce the ascending size of height in vibration system's vibration direction, the utility model discloses a great problem of current speaker height ratio in vibration system's vibration direction has been solved to the speaker, and the speaker of being convenient for develops to the platyzization.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a speaker according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a damper of a speaker according to the present invention;

the device comprises a frame 11, a basin frame 12, a mounting ring 21, U-shaped iron 22, main magnets 23, washers 24, auxiliary magnets 31, arc tops 32, a bending ring part 33, a connecting part 41, a voice coil 42, a framework 51, a barrel 52, a connecting ring 53, a transition ring 54, air holes 61 and a gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 and fig. 2 are schematic structural diagrams of the speaker of the present invention, wherein fig. 1 shows a schematic sectional structural diagram of the speaker of the present invention, and fig. 2 shows a schematic sectional structural diagram of a core support of the speaker of the present invention. For the sake of convenience, only the parts relevant to the present invention are shown in the drawings.

As can be seen from fig. 1 and 2, the loudspeaker includes a frame 11, a magnetic circuit system fixed in a cavity defined by the frame 11, and a vibration system installed at a port of the frame 11, the vibration system including a diaphragm fixedly connected to the port of the frame 11 and recessed toward one side of the magnetic circuit system; the diaphragm is characterized by further comprising a centering support sheet fixedly connected to the arc top part 31 of the diaphragm, an axial hole is formed in the magnetic circuit system corresponding to the centering support sheet, and the centering support sheet is inserted into the axial hole and is fixedly connected with the magnetic circuit system.

Because vibration system's vibrating diaphragm is sunken to magnetic circuit one side, centering branch piece fixed connection on the arc top 31 of vibrating diaphragm and insert the axial downthehole with magnetic circuit fixed connection, can reduce the ascending size in vibration system's vibration direction, the utility model discloses a speaker has solved the great problem of current speaker height ratio in vibration system's vibration direction, and the speaker of being convenient for develops to the platyzization.

In this embodiment, the centering disk includes a cylinder 51 having one end fixedly connected to the diaphragm, and a connection ring 52 disposed at one end of the cylinder 51 away from the diaphragm, and the outer peripheral side of the connection ring 52 is bonded to the inner sidewall of the axial hole.

A transition ring 53 is connected between the inner ring side of the connecting ring 52 and the end of the cylinder body 51, and the cylinder body 51, the transition ring 53 and the connecting ring 52 are connected into a whole; specifically, the cylinder 51, the transition ring 53, and the connection ring 52 may be an integral structure formed by injection molding, which is convenient for processing and ensures the strength of the centering pad, and of course, the centering pad may also be a split structure, the transition ring 53 and the connection ring 52 are integrally formed, and the inner ring side of the transition ring 5 is fixedly bonded to the end of the cylinder 51. The cross section of the transition ring 53 is arc-shaped, so that the strength of the centering disk can be enhanced, and when the centering disk can also be of a split structure, the centering disk can be used for storing more glue and enhancing the bonding strength.

In order to facilitate air flow when the vibration system vibrates and avoid influence of the air flow on the sound production effect, a plurality of air holes 54 are formed in the wall of the cylinder body 51, and in order to achieve a better air permeation effect, large holes and multiple holes are formed as much as possible on the premise that the strength of the centering disk is ensured, and generally, the total area of the plurality of air holes 54 accounts for 40% -50% of the area of the wall of the cylinder body 51. Specifically, the ventilation holes 54 are provided in 6 or 8 pieces, and correspondingly provided on opposite wall portions of both sides of the cylinder 51.

In this embodiment, the frame 11 is a conical cylinder, the diaphragm is fixed at the large port of the frame 11, and the magnetic circuit system is fixed at the small port of the frame 11.

The magnetic circuit system comprises a U-shaped iron 21 fixedly connected with the small port of the basin stand 11, a main magnet 22 fixed on the U-shaped iron 21, a washer 23 fixedly connected on the main magnet 22, and an auxiliary magnet 24 fixedly connected on one side of the washer 23 far away from the main magnet 22, a corresponding auxiliary magnet through hole is arranged on the auxiliary magnet 24, a washer through hole is arranged on the washer 23, a main magnet through hole is arranged on the main magnet 22, a bottom plate through hole is arranged on the bottom plate of the U-shaped iron 21, generally, a connecting ring 52 is bonded on the inner side wall of the auxiliary magnet through hole, of course, the connecting ring can be bonded on the inner side wall of the washer through hole as required, or on the inner side wall of the main magnet through hole, or on the inner. Therefore, the auxiliary magnet through hole, the washer through hole, the main magnet through hole and the bottom plate through hole form a heat dissipation path of a magnetic circuit system, and the problem of low heat dissipation efficiency caused by reduction of the overall height of the loudspeaker is solved.

In this embodiment, the vibration system further includes a voice coil 41 fixedly connected to the curved top portion 31 of the diaphragm through a bobbin 42, the voice coil 41 is inserted into a magnetic gap formed between the side plate of the U-bar 21 and the corresponding sides of the main magnet 22 and the sub-magnet 24, and the bobbin 42 and the curved top portion 31 are usually fixed by bonding.

The bottom plate of the U-bar 21 is formed in a flat shape, and the voice coil 41 is provided between the side wall of the U-bar 21 and the magnetic circuit system. The mode that the bottom plate of the existing U-shaped iron protrudes upwards is eliminated, the overall height of the magnetic circuit system can be reduced, and the height of the loudspeaker in the vibration direction of the vibration system can be further reduced.

The diaphragm comprises an arc top part 31 which is sunken towards one side of the magnetic circuit system, a folded ring part 32 which is annularly arranged on the peripheral side of the arc top part 31, and a connecting part 33 which is annularly arranged on the peripheral side of the folded ring part 32 far away from the arc top part 31; the mounting ring 12 is provided inside the large port of the frame 11, and a gasket 61 for fixedly connecting the mounting ring 12 and the connecting portion 33 is provided at a position corresponding to the two, and is usually fixedly connected by an adhesive or a thermal fusion. Specifically, when the cross-sectional area of the main magnet through hole occupies 25% to 30% of the area of the end face of the main magnet 22, the balance between the acoustic performance and the heat dissipation effect can be achieved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The loudspeaker comprises a frame, a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are fixed in a cavity defined by the frame; the diaphragm is characterized by further comprising a centering support sheet fixedly connected to the arc top of the diaphragm, an axial hole is formed in the magnetic circuit system corresponding to the centering support sheet, and the centering support sheet is inserted into the axial hole and fixedly connected with the magnetic circuit system.

2. The loudspeaker of claim 1, wherein the damper includes a cylindrical body having one end fixedly attached to the dome of the diaphragm, a coupling ring disposed on an end of the cylindrical body remote from the diaphragm, and an outer peripheral side of the coupling ring is bonded to an inner sidewall of the axial hole.

3. The loudspeaker of claim 2, wherein a transition ring is connected between the inner circumferential side of the connection ring and the end of the cylinder, and the cylinder, the transition ring, and the connection ring are integrally connected.

4. A loudspeaker as claimed in claim 3, characterized in that the transition ring is arc-shaped in cross-section and projects to the side remote from the diaphragm.

5. The speaker as claimed in claim 3, wherein a plurality of ventilation holes are formed on the wall of the cylinder, and the total area of the plurality of ventilation holes accounts for 40-50% of the area of the cylinder wall of the cylinder.

6. The loudspeaker according to any one of claims 2 to 5, wherein the frame is in a shape of a cone, the diaphragm is fixed at a large port of the frame, and the magnetic circuit system is fixed at a small port of the frame.

7. The loudspeaker according to claim 6, wherein the magnetic circuit system comprises a U-shaped iron fixedly connected with the small port of the frame, a main magnet fixed on the U-shaped iron, a washer fixed on the main magnet, and an auxiliary magnet fixed on the side of the washer far away from the main magnet, wherein the auxiliary magnet is correspondingly provided with an auxiliary magnet through hole, the washer is provided with a washer through hole, the main magnet is provided with a main magnet through hole, and a bottom plate through hole is provided on the bottom plate of the U-shaped iron.

8. The loudspeaker of claim 7, wherein the bottom plate of the U-iron is arranged in a planar shape, and the voice coil of the vibration system is arranged between the side wall of the U-iron and the magnetic circuit system.

9. The speaker of claim 7, wherein said coupling ring is bonded to an inner sidewall of said secondary magnet through hole.

10. The speaker of claim 7, wherein the cross-sectional area of said main magnet through-hole is 25% to 30% of the area of said main magnet end face.