CN113965860B

CN113965860B - Sound production unit

Info

Publication number: CN113965860B
Application number: CN202111584693.XA
Authority: CN
Inventors: 戚天平; 张永初; 马程坤
Original assignee: Shenzhen Zhongtian Communication Technology Shares Co ltd
Current assignee: Shenzhen Zhongtian Communication Technology Shares Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-04-12
Anticipated expiration: 2041-12-23
Also published as: CN113965860A

Abstract

The invention discloses a sound generating unit which comprises a support, a vibrating diaphragm, a voice coil, a damper and a magnetic circuit assembly, wherein the damper comprises a supporting member connected with the vibrating diaphragm and an elastic member connected with the supporting member, one end of the elastic member is connected with the supporting member, the elastic member is provided with a baffle, the bottom of the support is provided with an installation opening, the baffle penetrates through the installation opening and is clamped with the bottom of the support, the outer side of the bottom of the support is also provided with a yielding groove, the baffle is arranged in the yielding groove, and the baffle is elastically abutted to the yielding groove. Compared with the prior art, the damper disclosed by the invention is very simple in structure and simple and convenient to install, cannot interfere with the voice coil lead, can play a good limiting effect on the vibrating diaphragm and the voice coil, avoids the voice coil from moving radially, and ensures good tone quality.

Description

Sound production unit

Technical Field

The invention relates to the technical field of sound-electricity conversion, in particular to a sound production unit.

Background

The working principle of the electroacoustic transducer is that according to the Faraday law, the voice coil is driven by a magnetic field to move, the voice coil drives the vibrating diaphragm to vibrate to generate sound, the damper is an indispensable part in the electroacoustic transducer, the damper is also called as a damper, a centering disk and the like, and has the functions of braking and center retaining, the existing damper is generally fixed on a bracket through an outer edge, and an inner ring and the voice coil are bonded and fixed, so that the voice coil is kept to move in a magnetic gap without touching an iron sheet, a magnet or the bracket; however, the existing damper is very inconvenient to install, and in the long strip-shaped miniature sound generating unit, the existing damper is easy to cause the condition that two sides of the short side of the voice coil vibrate asynchronously, the voice coil is difficult to ensure the axial movement of the voice coil in a magnetic gap, the service life of the sound generating unit is influenced, and the tone quality is impure.

Disclosure of Invention

The invention provides a sound generating unit, which solves the technical problems that a damper of the sound generating unit in the prior art is difficult to mount and the voice coil is difficult to maintain to vibrate in the axial direction.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a sound emitting unit comprising: the bracket is a cuboid box body with one end provided with a bottom and the other end provided with an opening; the vibrating diaphragm is covered on the opening of the bracket; the voice coil is arranged in the bracket, and one end of the voice coil is connected with the vibrating diaphragm; a pair of attenuator, two the attenuator sets up respectively two short sides of box body, just the attenuator include with supporting member that the vibrating diaphragm is connected and with the elastic component that supporting member connects, elastic component's one end with supporting member connects, elastic component is equipped with the baffle for supporting member's the other end, just the installing port has been seted up to the bottom of support, the baffle passes the installing port and with the bottom joint of support, the outside of the bottom of support still is equipped with the groove of stepping down to the baffle, the baffle is located in the groove of stepping down, the baffle with elastic butt between the groove of stepping down.

Furthermore, the elastic component is a plate body, and the plate body is positioned in the middle of the support and the supporting component and is bent at least once.

Furthermore, the cross section of the supporting member is Z-shaped, the supporting member comprises a first plane end and a second plane end which are parallel, the first plane end is connected with the vibrating diaphragm, and the second plane end is connected with the elastic member.

Further, the elastic member is made of rubber.

Further, the sound generating unit further includes: the terminal assembly is arranged on the outer side of the support relative to the bottom of the opening, the voice coil comprises a voice coil lead, and the voice coil lead penetrates through the bottom of the support and is electrically connected with the terminal assembly.

Furthermore, the sound production unit further comprises a positioning rod, the positioning rod is erected inside the support, and the voice coil lead is lapped on the positioning rod.

Furthermore, the terminal assemblies are arranged in the middle of the support, and the voice coil lead of each voice coil is electrically connected with the same terminal assembly.

Furthermore, the sound production unit comprises two voice coils, the two voice coils are respectively arranged on two sides of the terminal component, each voice coil corresponds to one positioning rod, and the positioning rods are arranged on one side, close to the terminal component, of each voice coil.

Further, the sound generating unit further includes: the lid is established the voice coil loudspeaker voice coil with the U iron of the relative one end of vibrating diaphragm locates first magnet, magnetic conductive plate, second magnet in the voice coil loudspeaker voice coil in proper order.

Furthermore, the bottom of support is equipped with the confession the mouth of stepping down that the voice coil loudspeaker voice coil wore out.

Has the advantages that: compared with the prior art, the damper comprises the supporting component and the elastic component, the elastic component is connected with the vibrating diaphragm through the supporting component, when the damper is installed, the baffle on the elastic component penetrates through the bottom of the support and is clamped on the support under the elastic action of the elastic component, the baffle is located in the abdicating groove, and meanwhile, the baffle is elastically abutted to the abdicating groove.

Drawings

Fig. 1 is a schematic perspective view of a sound generating unit according to the present invention.

Fig. 2 is a schematic diagram of an explosion structure of the sound unit of the present invention.

Fig. 3 is a structural schematic diagram of a bottom view of the bracket of the present invention.

Fig. 4 is a schematic sectional structure view of the sound generating unit of the present invention.

Wherein, the main reference numbers in the drawings of the invention include:

1. a support; 11. a let position port; 12. an installation port; 13. a yielding groove; 2. vibrating diaphragm; 3. a damper; 31. a support member; 311. a first planar end; 312. a second planar end; 32. an elastic member; 321. a connecting end; 322. a baffle plate; 4. a voice coil; 41. a voice coil lead; 5. iron U; 6. a first magnet; 7. a magnetic conductive sheet; 8. a second magnet; 9. a terminal assembly; 10. and (5) positioning the rod.

Detailed Description

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The invention provides a sound generating unit, as shown in fig. 1-4, the sound generating unit in the present application mainly comprises a vibration component and a magnetic circuit component, wherein the vibration component mainly comprises a bracket 1, a vibrating diaphragm 2, a damper 3 and a voice coil 4, and the magnetic circuit component mainly comprises a U-shaped iron 5, a first magnet 6, a magnetic conductive sheet 7 and a second magnet 8 which are installed inside the bracket 1.

The shape of the support 1 in this application is similar to a rectangular box, wherein one end of the support 1 is a bottom, and the other end opposite to the bottom is provided with an opening, the diaphragm 2 is covered on the opening of the support 1, the voice coil 4 is installed inside the support 1, one end of the voice coil 4 is connected with the diaphragm 2, the bottom of the support 1 is provided with a yielding port 11, the yielding port 11 corresponds to the voice coil 4, in this embodiment, the voice coil 4 is cylindrical, and two voice coils 4 are arranged inside the support 1, so that the bottom of the support 1 is correspondingly provided with two corresponding yielding ports 11, the yielding port 11 is circular, the diameter of the yielding port 11 is slightly larger than that of the voice coil 4, during installation, one end of the voice coil 4 is connected with the diaphragm 2 covered on the opening of the support 1, and the other end passes through the bottom of the support 1 from the yielding port 11, so that the voice coil 4 can move along the axial direction thereof during work, the noise caused by the contact with the bracket 1 during the movement can not be generated.

A terminal assembly 9 is arranged at the outer side of the bottom of the bracket 1, the terminal assembly 9 is used for connecting a circuit part, a voice coil lead 41 is wound at the outer side of the voice coil 4, and the voice coil lead 41 is electrically connected with the terminal assembly 9 through the bottom of the bracket 1; wherein, the sound generating unit in this application specifically includes two voice coils 4, these two voice coils 4 are symmetrically arranged inside the support 1, the voice coil leads 41 on these two voice coils 4 need to be in circuit connection with the terminal assembly 9, the terminal assembly 9 is arranged at the central position of the bottom of the support 1, and a positioning rod 10 is arranged inside the support 1, the number of positioning rods 10 and voice coils 4 is relative to that of each voice coil 4, each voice coil 4 corresponds to one positioning rod 10, in this embodiment, two positioning rods 10 are arranged at positions near the center inside the support 1, and the positioning rod 10 is horizontal inside the support 1, when the voice coil leads 41 penetrate through the bottom of the support 1, the voice coil leads 41 firstly wind around the peripheral surface of the positioning rods 10, the positioning rods 10 provide support for the voice coil leads 41, and then penetrate through the bottom of the support 1, so that the positioning rods 10 provide good positioning effect for the voice coil leads 41, on one hand, the voice coil lead 41 can be ensured to well penetrate out of the bottom of the support 1, the voice coil lead 41 is convenient to connect out, the voice coil lead 41 is prevented from contacting with the support 1, the damper 3 and the like, and noise is avoided; on the other hand, the positioning rod 10 lifts the voice coil lead 41, so that the voice coil lead 41 is not easily cut by the hole wall when penetrating out, and the stability of wiring is ensured.

Every voice coil loudspeaker voice coil 4 corresponds and is equipped with one set of magnetic circuit assembly, U iron 5 is installed on voice coil loudspeaker voice coil 4's the tip relative with vibrating diaphragm 2, be equipped with first magnet 6 in proper order in voice coil loudspeaker voice coil 4's inside, magnetic conductive plate 7 and second magnet 8, wherein first magnet 6 is as vice magnet, second magnet 8 is as main magnet, second magnet 8 is close to U iron 5, first magnet 6 is towards vibrating diaphragm 2, fix between U iron 5 after the installation and the 1 bottom of support, dodge voice coil loudspeaker voice coil 4's moving path.

The damper 3 of the present application is different from the damper 3 of the prior art, as shown in fig. 2 and 4, the damper 3 of the present application is connected to the diaphragm 2, the damper 3 is disposed at both ends of the diaphragm 2 in the length direction, meanwhile, the damper 3 has elasticity, and after the diaphragm 2 and the bracket 1 are installed, the damper 3 is connected with the diaphragm 2, and the vibration diaphragm 2 is kept in contact with the bracket 1, the vibration diaphragm 2 is kept from shaking in a large range by the elasticity of the damper 3, particularly, the back-and-forth movement of the vibration diaphragm 2 along the radial direction of the voice coil 4 is well limited during vibration, so that the swing amplitude of the vibration diaphragm 2 is greatly reduced, and correspondingly, the voice coil 4 connected to the vibration diaphragm 2 is ensured to move only in the axial direction, when the vibrating diaphragm 2 vibrates, the vibrating diaphragm does not touch the support 1, and particularly touches the yielding port 11 at the bottom of the support 1.

Further, the damper 3 in the present application is composed of two parts, which are a supporting member 31 and an elastic member 32, respectively, the supporting member 31 has a zigzag cross-sectional shape, the supporting member 31 has good supporting strength, the supporting member 31 has an upright zigzag shape in a cross-sectional view, and the upper and lower portions of the supporting member 31 are parallel planar ends, when installed, a first planar end 311 above the supporting member 31 is connected to the diaphragm 2, and a second planar end 312 below the supporting member 31 is used for connecting the elastic member 32; one end of the elastic member 32 is connected to the supporting member 31, and the other end is in direct contact with the bracket 1, and the elastic member 32 has good elastic performance, and can limit the position of the diaphragm 2, thereby preventing the diaphragm 2 from shaking in a large range.

Furthermore, the elastic member 32 in the present application is plate-shaped, one end of the elastic member 32 is a connection end 321, the connection end 321 is connected and fixed with the second plane end 312 below the supporting member 31, the other end of the elastic member 32 opposite to the connection end 321 is a baffle 322, the baffle 322 is abutted with the bracket 1, and the plate body of the elastic member 32 is bent from the connection end 321 to the baffle 322 to provide sufficient elastic buffering for the elastic member 32.

Furthermore, the bottom of the bracket 1 is further provided with an installation opening 12, the baffle 322 passes through the installation opening 12 and is clamped with the bottom of the bracket 1, namely, during installation, the elastic member 32 is extruded and deformed, the whole elastic member 32 passes through the installation opening 12 to the outside of the bracket 1, the connecting end 321 is connected with the supporting member 31, the baffle 322 returns to the original shape under the action of the elasticity of the elastic member 32 after passing through the installation opening 12, and at the moment, the baffle 322 abuts against the bottom of the bracket 1, so that the whole damper 3 is clamped on the installation opening 12; in order to enable the bracket 1 to have an elastic extrusion effect on the elastic member 32, the outer side of the bottom of the bracket 1 is further provided with the receding groove 13 for the baffle 322, the baffle 322 is arranged in the receding groove 13, and the end part of the baffle 322 is in contact with the groove wall of the receding groove 13, so that a good extrusion effect can be provided for the elastic member 32, and the elastic member 32 can be elastically deformed. Under the design, the damper 3 is very simple in structure and convenient to install, does not interfere with the voice coil lead 41, and facilitates leading-out of the voice coil lead 41 and installation and assembly of other magnetic circuit components; simultaneously to vibrating diaphragm 2, voice coil loudspeaker voice coil 4 spacing respond well, can be fine avoid voice coil loudspeaker voice coil 4 to carry out radial motion, and then avoid voice coil loudspeaker voice coil 4 to contact with other structures except vibrating diaphragm 2, guaranteed tone quality's good.

Preferably, the elastic member 32 in the present embodiment is provided as a U-bend; of course, in other embodiments, the bending shape of the elastic member 32 may be a wave shape or a V-shaped bending.

Preferably, the material of the elastic member 32 in this application is a rubber material, because the rubber material has a long service life, and has good elasticity and strength, and the installation position of the damper 3 in this application is between the vibrating diaphragm 2 and the bracket 1, and it can also be used as a cushion pad when the vibrating diaphragm 2 and the bracket 1 are installed, only the elastic member 32 needs to be firstly put into the bracket 1 in the installation process, and the two dampers 3 are mutually abutted with the inside of the bracket 1, so that the installation position of the vibrating diaphragm 2 can be determined, which not only facilitates the alignment installation of the vibrating diaphragm 2 and the bracket 1, but also ensures the close contact between the elastic member 32 and the bracket 1, greatly improves the installation efficiency, and simultaneously reduces the scratch between the vibrating diaphragm 2 and the bracket 1, and the scratch between the dampers 3 and the bracket 1, and ensures the yield.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A sound emitting unit, comprising:

the support (1), the said support (1) is a cuboid box with one end having a bottom and the other end having an opening;

the vibrating diaphragm (2) is covered on the opening of the bracket (1);

the voice coil (4) is installed in the support (1), and one end of the voice coil (4) is connected with the vibrating diaphragm (2);

a pair of attenuator (3), two attenuator (3) set up respectively two short sides of box body, just attenuator (3) include with supporting member (31) that vibrating diaphragm (2) are connected and with elastic component (32) that supporting member (31) are connected, the one end of elastic component (32) with supporting member (31) are connected, elastic component (32) are equipped with baffle (322) for the other end of supporting member (31), just installing port (12) have been seted up to the bottom of support (1), baffle (322) pass installing port (12) and with the bottom joint of support (1), the outside of the bottom of support (1) still is equipped with yielding groove (13) to baffle (322), baffle (322) are located in yielding groove (13), contact each other between the tip of baffle and the cell wall in yielding groove, the baffle (322) is elastically abutted with the receding groove (13).

2. Sound-emitting unit according to claim 1, characterised in that the resilient member (32) is a plate which is bent at least once in the middle of the support (1) and the support member (31).

3. The sound generating unit according to claim 1, wherein the support member (31) is zigzag-shaped in cross-section, the support member (31) comprising a first planar end (311) and a second planar end (312) in parallel, the first planar end (311) being connected to the diaphragm (2) and the second planar end (312) being connected to the resilient member (32).

4. The sound generating unit according to claim 1, wherein the elastic member (32) is made of rubber.

5. The sound generating unit according to claim 1, further comprising a terminal assembly (9) provided outside the holder (1) with respect to the bottom of the opening, wherein the voice coil (4) comprises a voice coil lead (41), and wherein the voice coil lead (41) is electrically connected to the terminal assembly (9) through the bottom of the holder (1).

6. The sound generating unit according to claim 5, further comprising a positioning rod (10), wherein the positioning rod (10) is erected inside the bracket (1), and the voice coil lead (41) is lapped on the positioning rod (10).

7. Sound generating unit according to claim 6, characterized in that the terminal assembly (9) is arranged in the middle of the holder (1), and that the voice coil leads (41) of each voice coil (4) are electrically connected to the same terminal assembly (9).

8. The sound generating unit according to claim 7, wherein the sound generating unit comprises two voice coils (4), the two voice coils (4) are respectively disposed on two sides of the terminal assembly (9), each voice coil (4) corresponds to one positioning rod (10), and the positioning rods (10) are disposed on one side of the voice coils (4) close to the terminal assembly (9).

9. The sound generating unit of claim 1, further comprising: the lid is established voice coil loudspeaker voice coil (4) with U iron (5) of the relative one end of vibrating diaphragm (2) are located in proper order first magnet (6), magnetic conductive plate (7), second magnet (8) in voice coil loudspeaker voice coil (4).

10. The sound generating unit according to claim 1, wherein the bottom of the support (1) is provided with a position-giving opening (11) for the voice coil (4) to pass through.