CN214507379U

CN214507379U - Sound production module

Info

Publication number: CN214507379U
Application number: CN202120919408.4U
Authority: CN
Inventors: 陈阿亮; 杨琨; 陈国强
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-10-26
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a sounding module, the sounding module includes metal casing, sounding monomer and connects electrical parts, the sounding monomer set up in the metal casing, the surface of sounding monomer is divided into non-electricity connection region and electricity connection region, the sounding monomer still includes the insulating barricade that sets up in electricity connection region border, the insulating barricade set up in the metal casing with connect between the electricity connection region; the first end of the electric connection piece is connected with the electric connection area, and the second end of the electric connection piece is used for being connected with an external circuit. The utility model provides a circuit and metal casing on the sound production monomer can effectively be avoided to the sound production module and switches on, and product operating stability is high.

Description

Sound production module

Technical Field

The utility model relates to an electroacoustic conversion technology field especially relates to a sound production module.

Background

The sounding unit is an important accessory in electronic products, and is used for converting digital signals into sound waves to be played. The sound production monomer comprises a vibration system and a magnetic circuit system with a magnetic gap, wherein the vibration system comprises a vibrating diaphragm, a voice coil inserted into the magnetic gap and driving the vibrating diaphragm to vibrate, and a sound production module used for keeping the voice coil to do reciprocating motion in the magnetic gap along the axial direction. In the prior art, a part of sounding monomers are assembled in a shell to form a sounding module, and then functional devices such as the sounding module are assembled into an electronic product. In order to be favorable for heat dissipation of the sounding single body, the partial shell in the prior art is a metal shell with large specific heat capacity, so that when the conductive structure on the sounding single body is contacted with the metal shell, the sounding single body is conducted with the metal shell, and thus, the short circuit of the whole machine is caused, and the use of a user is influenced.

Therefore, there is a need to provide a novel sound module to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a sound production module, aims at solving among the current sound production module, metal casing leads to the technical problem that the complete machine opens circuit with the contact of sound production monomer easily.

In order to achieve the above object, the utility model provides a sounding module includes:

the metal shell is provided with an insulating layer on the inner wall surface;

the sounding unit is arranged in the metal shell, a non-power-connection area and a power-connection area are divided on the outer surface of the sounding unit, the sounding unit further comprises an insulating retaining wall arranged at the edge of the power-connection area, and the insulating retaining wall is arranged between the metal shell and the power-connection area;

the first end of the electric connection piece is connected with the electric connection area, and the second end of the electric connection piece is used for being electrically connected with an external circuit.

Optionally, the sound production monomer includes the basin frame, is fixed in the magnetic circuit and the vibration system of basin frame, vibration system's voice coil loudspeaker voice coil with connect the regional electricity and connect, insulating barricade is located on the basin frame, vibration system's vibrating diaphragm set firmly in on the basin frame, insulating barricade is located the basin frame is kept away from vibration system's one end.

Optionally, the basin frame includes a side wall supporting a diaphragm of the vibration system and a bottom wall disposed opposite to the diaphragm, the side wall is connected to the bottom wall, and the power connection area is distributed on the bottom wall.

Optionally, the side wall extends away from the diaphragm direction to form the insulating retaining wall.

Optionally, the diapire is sunken to form the mount table, connect the electric regional distribution in on the mount table, the first end setting of connecting the electric piece is in the mount table with in the space that insulating barricade encloses.

Optionally, the metal casing includes an upper casing and a lower casing that cooperate to form the accommodating space, the upper casing includes a casing top wall and a casing side wall that bends and extends from the casing top wall, an opening has been seted up on the casing top wall, the one end that the sound production monomer was provided with the vibrating diaphragm is located on the casing top wall, the vibrating diaphragm expose in the opening.

Optionally, the insulating layer at least partially covers a position on the side wall of the housing opposite to the power connection region.

Optionally, the insulating layer covers the housing top wall and the housing side wall.

Optionally, a notch is formed in the side wall of the shell, the lower shell is matched with the notch to form an abdicating gap, and the second end extends out of the abdicating gap to be electrically connected with an external circuit.

Optionally, the inferior valve includes from interior to exterior connected gradually central part, connecting portion and extension, connecting portion certainly the central part is to being close to the diaphragm direction extends, connecting portion with extension forms sealed step, the sound production monomer is still including locating connecting material on the sealed step, extension passes through connecting material with shell lateral wall sealing connection.

In the technical scheme provided by the utility model, the insulating retaining wall is arranged at the edge of the power connection area, and the insulating retaining wall is arranged between the power connection area and the metal shell at intervals, so that the possibility of the conduction of the power connection area and the metal shell and the conduction of the power connection piece and the metal shell is reduced, and the service life of the product is prolonged; the metal shell is beneficial to radiating heat generated by the operation of the sounding monomer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a sound module according to an embodiment of the present invention;

fig. 2 is a schematic view of a disassembled structure of the sound module according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the portion A shown in FIG. 2;

fig. 4 is an enlarged schematic view of a portion B shown in fig. 2.

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound production module	1	Metal shell
11	Upper casing	111	Top wall of shell
				113	Side wall of the shell	13	Lower casing
131	Center part	132	Through hole
				133	Connecting part	134	Mounting groove
135	Extension part	3	Sound monomer
				31	Electrical connection region	33	Basin rack
33	Basin rack	331	Side wall
				333	Bottom wall	335	Mounting table
35	Insulating retaining wall	5	Power connection part
				51	Second end	53	First end
9	Damping fin	112	Opening of the container

The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, the utility model provides a sound module 100 includes metal casing 1, sound production monomer 3 and connects electric piece 5, and sound production monomer 3 sets up in metal casing 1, sets up the insulating layer on the internal face of metal casing 1, and sound production monomer 3's surface is divided and is had non-to connect electric region (not marked) and connect electric region 31, and sound production monomer 3 still includes the insulating barricade 35 that sets up in connecting electric region 31 border, insulating barricade 35 set up in metal casing 1 with connect between electric region 31; the first end of the electric connecting piece 5 is connected with the electric connecting area 31, and the second end of the electric connecting piece 5 is used for being connected with an external circuit.

The electric connection component 5 can be a flexible circuit board, an electric connection wire, an electric connection terminal, a metal conductive component and the like, and has a conductive structure for conducting the sounding unit 3 and an external circuit. The exposed conductive areas such as the bonding pads, the electric connection elastic sheets and the electric wires on the sounding single body 3 can be divided into electric connection areas 31, and the rest exposed parts which do not need to be connected with electricity or cannot be conducted are divided into non-electric connection areas. The number of the electric connection areas 31 can be multiple, in this embodiment, the distribution position of the electric connection areas 31 is not limited, and the electric connection areas 31 can be set by a person skilled in the art according to the structure of the sounding units 3, the connection mode of the electric connection piece 5 and the sounding units 3, the connection mode of the sounding module 100 and an external circuit, and the like, so as to facilitate the assembly of the sounding module 100 and improve the sound quality of vibration sounding. The insulating wall 35 may be specifically phenol resin, polyvinyl chloride, polyethylene, polytetrafluoroethylene, neoprene, polyvinyl acetal, asbestos, glass fiber, or the like having insulating properties.

In the utility model, the insulating retaining wall 35 is arranged at the edge of the power connection area 31, and the insulating retaining wall 35 is arranged between the power connection part 5 and the metal shell 1 at intervals, so that the possibility of the conduction of the power connection part 5 and the metal shell 1 and the conduction of the power connection area 31 and the metal shell 1 are reduced, and the service life of the product is prolonged; the metal casing 1 is beneficial to dissipating heat generated by the operation of the sounding unit 3.

Further, the sound generating unit 3 includes a frame 33, a magnetic circuit system (not shown) and a vibration system (not shown) disposed in the frame 33, wherein a voice coil of the vibration system is electrically connected to the power connection region 31, an insulating wall 35 is disposed on the frame 33, and a diaphragm of the vibration system is fixedly disposed on the frame 33.

The frame 33 may be made of an insulating material, or may be made of an insulating material only in a partial region. The frame 33 provides a frame structure for the magnetic circuit system and the vibration system, so that the magnetic circuit system and the vibration system can be stably assembled in the frame 33 and maintain a certain relative position relationship. The insulating retaining wall 35 and the basin frame 33 can be made of uniform materials and are integrally formed; the insulation retaining wall 35 can also be arranged on the basin frame 33 by embedding, welding, bonding and the like. The magnetic circuit system specifically comprises main magnetic steel and auxiliary magnetic steel arranged around the main magnetic steel, and a magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel; the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate and produce sound, and the voice coil is inserted into the magnetic gap. The voice coil can be connected with an external circuit through the electric connection area 31 and the electric connection piece 5, and when the voice coil is electrified, the voice coil vibrates along the magnetic gap under the action of a magnetic field of the magnetic circuit system.

Further, the frame 33 includes a sidewall 331 supporting the diaphragm and a bottom wall 333 disposed opposite to the diaphragm, the sidewall 331 is connected to the bottom wall 333, and the power receiving area 31 is distributed on the bottom wall 333. In this embodiment, the power receiving area 31 and the diaphragm are disposed opposite to each other, the sidewall 331 surrounds a space for accommodating the magnetic circuit system, the magnetic circuit system can be attached to the bottom wall 333, the bottom wall 333 can be provided with a through mounting hole, and a conductive structure such as a conductive terminal or a pad electrically connected to the voice coil forms the power receiving area 31 at the mounting hole. The electric connecting piece 5 is electrically connected with the electric connecting area 31, and signal conduction from an external circuit to the voice coil can be realized.

Still further, the sidewall 331 extends away from the diaphragm to form an insulating wall 35. In the present embodiment, the insulating barriers 35 are vertically disposed along the vibration direction of the diaphragm; in other embodiments, the insulating retaining wall 35 may also be a more complex structure, for example, the insulating retaining wall 35 includes a first wall extending from the sidewall 331 to a direction away from the diaphragm and a second wall extending from the first wall in a bending manner, the second wall is disposed opposite to the power connection region, and the second wall shields the connection point of the electrical component 5 and the power connection region, so that the connection point of the electrical component 5 and the power connection region is enclosed in the insulating retaining wall 35, thereby further reducing the possibility of conducting the electrical component 5 and the metal housing 1.

The bottom wall 333 is recessed to form a mounting platform 335, the electric connection region 31 is distributed on the bottom surface of the mounting platform 335, and the first end of the electric connection piece 5 is arranged in the space enclosed by the mounting platform 335 and the insulating retaining wall 35 and is electrically connected with the electric connection region 31. When the electrical component 5 is connected to the electrical connection region 31, a conductive material such as a solder material may be applied to the mounting stage 335, and the first end of the electrical component 5 may be bonded to the melted conductive material. The insulating wall 35 and the recessed mounting 335 limit the possibility that the conductive material can only be in the fixed space, thereby avoiding the possibility of soldering the conductive material that overflows into contact with the metal can 1. The number of the electric connection regions is two, the electric connection part 5 comprises a second end 51 and two first ends 53 extending from the second end 51 and arranged at two intervals, and the two first ends 53 are respectively electrically connected with the two electric connection regions 31 and respectively arranged in the space surrounded by the mounting table 335 and the insulating retaining wall 35. In the embodiment shown in fig. 2, the electrical connection component 5 is a flexible circuit board, and the conductive traces in the flexible circuit board are electrically connected to the two electrical connection areas 31 respectively. Along perpendicular to vibrating diaphragm vibration direction, the section of basin frame 33 is fillet rectangle structure, and two connect electric area 31 to be established respectively in the adjacent bight of fillet rectangle volume, and insulating barricade 35 sets up along the peripheral line of this fillet rectangle.

In one embodiment, an insulating layer is disposed on the inner wall surface of the metal housing 1. The insulating layer can be arranged by coating, bonding, plating and the like, and the insulating layer can be arranged on the inner wall surface of the metal shell 1 or only at a preset position, wherein the preset position is a position where a person skilled in the art judges that the metal shell 1 and the electric connection part 5 have a large conduction risk.

In this embodiment, metal casing 1 includes that the cooperation forms accommodating space's epitheca 11 and inferior valve 13, and metal casing 1 includes shell roof 111 and the shell lateral wall 113 that extends from shell roof 111, sound production monomer 3 locates on the shell roof 111, sound production monomer 3 with inferior valve 13 interval sets up, the insulating layer is located on the shell lateral wall 113 and with insulating barricade 35 sets up relatively. The sound production monomer 3 sets up with 13 looks intervals of inferior valve to reserve the position of placing sound absorbing structure, in order to further increase virtual space. Since the sound emitting unit 3 and the lower case 13 are provided at an interval, the possibility of causing the lower case 13 to electrically communicate with the power receiving area 31 is small, so that the lower case 13 may not be provided with an insulating layer. The insulating layer is provided only in a region where there is a high possibility that shell sidewall 113 is in electrical communication with power receiving region 31, to reduce the processing cost.

An opening 112 is formed in the top wall 113 of the casing, the first end of the sound-generating unit 3, which is provided with the vibrating diaphragm, is arranged on the top wall 113 of the casing, and the vibrating diaphragm is exposed out of the opening 112. The one end that sets up the vibrating diaphragm in the sound production monomer 3 is fixed on shell roof 111, and the lateral wall 331 of basin frame 33 is fixed on shell lateral wall 113 for sound production monomer 3 and stable setting are in metal casing 1, and the heat that sound production monomer 3 work produced simultaneously can directly conduct to metal casing 1, further dispel the heat through metal casing 1 again.

Referring to fig. 2 and 4, the lower case 13 includes a central portion 131, a connecting portion 133 and an outer extending portion 135 connected in sequence from inside to outside, the connecting portion 133 extends from the central portion 131 toward a direction close to the diaphragm, the connecting portion 133 and the outer extending portion 135 form a sealing step, the sound-generating unit 3 further includes a connecting material (not shown) disposed on the sealing step, and the outer extending portion 135 is connected to the case sidewall 113 in a sealing manner through the connecting material. The worker may apply an adhesive material or a welding material on the sealing step so that the lower case 13 of the metal material is hermetically coupled with the upper case 11 of the metal material.

The back cavity is formed between the lower shell 13 and the sounding unit 3, the through hole 132 for communicating the back cavity is formed in the lower shell 13, and the sounding module 100 further comprises a damping sheet 9 covering the through hole 132. Those skilled in the art can adjust the material of the damping plate 9, the area of the damping plate 9 covering the through hole 132, and the like, and adjust the air permeability of the rear cavity communicated with the outside through the through hole 132, so as to balance the air pressure balance between the sound module 100 and the outside.

The center portion 131 is recessed to form a mounting groove 134, the through hole 132 is opened on the bottom surface of the mounting groove 134, and the damper 9 is accommodated in the mounting groove 134. By providing the mounting groove 134, the damper 9 can be accommodated in the mounting groove 134, and the damper 9 is prevented from protruding out of the central portion 131; simultaneously, by arranging the mounting groove 134, the damping fin 9 can be effectively limited, and the assembly of workers is facilitated.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound generating module, comprising:

the metal shell is provided with an insulating layer on the inner wall surface;

2. The sound production module of claim 1, wherein the sound production unit comprises a frame, a magnetic circuit system fixed on the frame, and a vibration system, the voice coil of the vibration system is electrically connected to the power connection region, the insulating retaining wall is disposed on the frame, and the insulating retaining wall is disposed at one end of the frame far away from the vibration system.

3. The sound production module of claim 2, wherein the frame comprises a side wall for supporting a diaphragm of the vibration system and a bottom wall arranged opposite to the diaphragm, the side wall is connected with the bottom wall, and the power connection area is distributed on the bottom wall.

4. The acoustic module of claim 3, wherein the sidewall extends away from the diaphragm to form the insulating wall.

5. The acoustic module according to claim 4, wherein the bottom wall is recessed to form a mounting platform, the electrical connection region is distributed on the mounting platform, and the first end of the electrical connection member is disposed in a space defined by the mounting platform and the insulating retaining wall.

6. The sound module according to any one of claims 1 to 5, wherein the metal housing includes an upper shell and a lower shell that cooperate to form the receiving space, the upper shell includes a top wall and a side wall that bends and extends from the top wall, an opening is opened on the top wall, the end of the sound unit provided with the vibrating diaphragm is disposed on the top wall, and the vibrating diaphragm is exposed out of the opening.

7. The sound generation module of claim 6, wherein the insulating layer at least partially covers a location on the housing sidewall opposite the power receiving area.

8. The sound generation module of claim 7, wherein the insulating layer covers the housing top wall and the housing side wall.

9. The acoustic module of claim 6, wherein the housing sidewall has a notch formed therein, the lower housing and the notch cooperate to form a relief gap, and the second end extends out of the relief gap to be electrically connected to an external circuit.

10. The acoustic module of claim 6, wherein the lower casing includes a central portion, a connecting portion and an extension portion, the central portion, the connecting portion and the extension portion are sequentially connected from inside to outside, the connecting portion extends from the central portion to a direction close to the diaphragm, the connecting portion and the extension portion form a sealing step, the acoustic unit further includes a connecting material disposed on the sealing step, and the extension portion is connected to the casing side wall in a sealing manner through the connecting material.