CN218387893U

CN218387893U - Centering disk and sounding device

Info

Publication number: CN218387893U
Application number: CN202222715989.7U
Authority: CN
Inventors: 郭翔; 方亚辉; 孙立国
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-01-24
Anticipated expiration: 2032-10-14

Abstract

The utility model provides a centering support piece and including the sound production device of this centering support piece, centering support piece includes outer fixed part, interior fixed part and connects the linking arm of interior fixed part and outer fixed part, and the linking arm is at least partly the wave, centering support piece include at least one deck substrate layer and at least one deck complex in the conducting material layer of substrate layer, the conducting material layer is conductive coating or conducting resin layer. Compared with the prior art, the wave structure is added on the connecting arm of the centering support sheet, so that the length of the connecting arm of the centering support sheet can be effectively increased, the stress of the centering support sheet is reduced, and the reliability of a product is improved; and compared with a copper foil, the anti-fatigue fracture strength of the centering branch sheet is better and the reliability is higher.

Description

Centering disk and sounding device

Technical Field

The utility model relates to an electroacoustic product technical field, in particular to centering branch piece and sound production device.

Background

With the expansion of consumer electronics market, a large number of consumer electronics products such as mobile phones, notebook computers and the like are widely used, and as important acoustic components in the consumer electronics products, speakers have wide requirements. With the increasing demand of consumer electronics, the performance of speakers is receiving more and more attention.

The speaker includes: the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a vibrating diaphragm, a voice coil and a centering support sheet, the voice coil and the centering support sheet are combined with the vibrating diaphragm, and the centering support sheet is mainly used for keeping the vibration system to do reciprocating motion only along the axial direction and providing elasticity for the vibration system to do reciprocating motion when the voice coil is stressed. The current commonly used centering support sheet is conductive through a copper foil, but the risk of fracture failure of the copper foil in the reciprocating vibration process is higher. When the copper foil is applied, the requirements on the shape design and the length of the vibrating arm of the centering support sheet are higher, the vibrating arm is shorter, the vibration stress is higher, and the risk of fracture and failure of the conductive copper foil is higher; if the length of the vibrating arm is simply increased, the space of a magnetic circuit system is occupied, and the sensitivity of the loudspeaker is not improved.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages, an object of the present invention is to provide a damper, which aims to reduce stress of the damper during vibration and improve conductive reliability of the damper on the basis of not occupying additional space.

In order to solve the technical problem, the utility model discloses a realize like this, a centering piece, a serial communication port, centering piece includes outer fixed part, interior fixed part and connection interior fixed part with the linking arm of outer fixed part, the linking arm part at least is the wave, centering piece include at least one deck substrate layer and at least one deck compound in the conducting material layer of substrate layer, the conducting material layer is conductive coating or conductive adhesive layer.

Preferably, the linking arm include with the first section that outer fixed part connects, with the second section that interior fixed part connects, and connect first section with the interlude of second section, first section with the second section is the plane section, the interlude is the wave, the interlude protrusion in first section with the plane at second section place.

Preferably, the centering branch piece comprises a substrate layer, and the conductive material layer is formed on one side surface of the substrate layer in an electroplating or coating mode.

Preferably, the centering branch piece comprises at least two substrate layers, and at least one layer of the conductive material layer is arranged between two adjacent substrate layers.

Preferably, the substrate layer includes a first substrate layer and a second substrate layer, the conductive material layer is a conductive coating, one side of the conductive coating is bonded to the first substrate layer, and the other side of the conductive coating is bonded to the second substrate layer through a glue layer.

Preferably, the substrate layer includes a first substrate layer and a second substrate layer, the conductive material layer is a conductive adhesive layer, and the first substrate layer and the second substrate layer are respectively combined on two surfaces of the conductive adhesive layer.

Preferably, the conductive adhesive is conductive silver adhesive, and the conductive silver adhesive is coated on the surface of the substrate layer.

Preferably, the conductive plating layer is a metal plating layer formed on the surface of the substrate layer by electroplating.

Preferably, the material of the substrate layer is polyimide.

The utility model discloses another aspect still provides a sound production device, sound production device includes

The bracket is an annular frame;

the magnetic circuit system is fixed on the bracket and forms a magnetic gap;

the vibration system comprises a vibrating diaphragm fixed on the support, a voice coil arranged in the magnetic gap and a centering support sheet elastically supporting the voice coil.

The utility model discloses a centering support piece compares with correlation technique, and beneficial effect lies in:

the wave structure is added on the connecting arm of the centering support sheet, so that the length of the connecting arm of the centering support sheet can be effectively increased, the stress of the centering support sheet is reduced, and the reliability of a product is improved; the conductive coating or the conductive adhesive is arranged on the base material layer of the centering support sheet, and compared with the combination of copper foil, the centering support sheet has better fatigue fracture resistance.

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 three-dimensional structure diagram of a centering support according to an embodiment of the present invention.

Fig. 2 is a plan view of the spider of fig. 1.

Fig. 3 is a partial structural sectional view of the damper of fig. 2.

Fig. 4 is a partial structural sectional view of a centering disk according to another embodiment of the present invention.

Fig. 5 is a partial structural sectional view of a centering branch piece according to another embodiment of the present invention.

Fig. 6 is an exploded perspective view of a sound generating device according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				1	Centering support plate	1b	Conductive coating
11	External fixing part	1d	Conductive adhesive layer
				12	Inner fixing part	1c	Glue layer
13	Connecting arm	2a	Second base material layer
				131	First stage	100	Sound production device
132	Second section	10	Support frame
				133	Middle section	20	Vibrating diaphragm
a	Substrate layer	30	Voice coil
				b	Layer of conductive material	40	Magnetic circuit system
1a	First base material layer

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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 indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate 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 explicitly defined 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.

As shown in fig. 1 to 5, the present invention provides a centering plate 1, wherein the centering plate 1 includes an outer fixing portion 11, an inner fixing portion 12 and a connecting arm 13 connecting the inner fixing portion 12 and the outer fixing portion 11, and the connecting arm 13 is at least partially corrugated. The centering support sheet 1 comprises at least one substrate layer a and at least one conductive material layer b compounded on the substrate layer a, wherein the conductive material layer b is a conductive coating or a conductive adhesive layer.

In the utility model, the centering support sheet 1 plays the roles of electric conduction and centering, the length of the connecting arm 13 of the centering support sheet 1 can be effectively increased by adding the wave structure on the connecting arm 13 of the centering support sheet 1, the stress of the centering support sheet 1 is reduced, the risk of breakage of the centering support sheet 1 in the vibration process is reduced, and the reliability of the product is improved; meanwhile, the conductive coating or the conductive adhesive layer is arranged on the base material layer a of the centering branch piece 1, and compared with the base material layer a combined with a copper foil, the copper foil is conductive, the combination degree of the conductive coating or the conductive adhesive layer and the base material layer a is better, and the fatigue fracture resistance of the centering branch piece 1 is better.

It should be noted that, the centering support 1 described in the present application may be an annular support, or may be two or more supports disposed at intervals, and the conductive material layer b may form a conductive circuit on the surface of the centering support 1, or may form multiple mutually independent conductive circuits. Meanwhile, the thickness of the base material layer a and the thickness, width and the like of the conductive coating or the conductive adhesive layer can be designed according to actual needs.

Further, the connecting arm 13 includes a first section 131 connected to the outer fixing portion 11, a second section 132 connected to the inner fixing portion 12, and an intermediate section 133 connecting the first section 131 and the second section 132, wherein the first section 131 and the second section 132 are planar sections, the intermediate section 133 is wavy, and the intermediate section 133 protrudes out of the plane where the first section 131 and the second section 132 are located. In this application, first section 131 and second section 132 are the plane section, and interlude 133 is the wave, and simple process is convenient for process. And, interlude 133 is the wave, can increase the length of linking arm 13, reduces the stress of centring disk 1, further reduces the cracked risk of linking arm 13 among the vibration process, promotes the product reliability. The middle section 133 protrudes out of the plane where the first section 131 and the second section 132 are located, that is, the wave shape is designed in the thickness direction (Z axis) of the damper 1 to extend the length of the connecting arm 13, so that when the damper 1 is applied to a product such as the sound generating device 100, the damper does not occupy the space of other parts.

Fig. 2 shows a view of a damper 1 according to one embodiment, a plan view of the damper 1 is shown on the left side, and a plan view of a plating layer provided on the surface of the damper 1 is shown on the right side. Fig. 3 shows a partial structural cross-sectional view of the centering chip 1 of fig. 2. Specifically, the centering chip 1 includes a substrate layer a, and the conductive material layer b is formed on one side surface of the substrate layer a by electroplating or coating. Adopt the technology of electroplating or coating to form conducting material layer b on the surface of substrate layer a, compare and inlay in substrate layer a in the tradition and establish the copper foil, simple process, it is with low costs, the volume production of being convenient for.

As another embodiment, the centering chip 1 includes at least two substrate layers a, and at least one conductive material layer b is disposed between two adjacent substrate layers a. The both sides of conducting material layer b all are equipped with substrate layer a, can play the guard action to conducting material layer b, can effectively avoid droing or peeling off of conducting material layer b, avoid the short circuit risk, promote the life of centering disk 1. It is understood that when the conductive material layer b is disposed between two substrate layers a, the substrate layers a are disposed with clearance holes for exposing the conductive material layer b to electrically connect with an external circuit or the voice coil 30 of the sound generating device 100, so as to achieve the conductive function thereof.

Specifically, as shown in fig. 4, the substrate layer a includes a first substrate layer 1a and a second substrate layer 2a, the conductive material layer b is a conductive plating layer 1b, one side of the conductive plating layer 1b is bonded to the first substrate layer 1a, and the other side of the conductive plating layer 1b is bonded to the second substrate layer 2a through a glue layer 1 c. The method specifically comprises the steps that after a conductive coating 1b is formed on a first base material layer 1a, a second base material layer 2a is combined on the other side of the conductive coating 1b through an adhesive process, so that the base material layers are arranged on two sides of the conductive coating 1 b. In this application, electrically conductive cladding material 1b bonds with second substrate layer 2a through glue film 1c and combines, and simple process is convenient for realize. The both sides of electrically conductive cladding material 1b are located to first substrate layer 1a and second substrate layer 2a, can effectively avoid droing or peeling off of electrically conductive cladding material 1b, avoid the short circuit risk, promote the life of centering chip 1.

As another embodiment, as shown in fig. 5, the base material layer a includes a first base material layer 1a and a second base material layer 2a, the conductive material layer b is a conductive adhesive layer 1d, and the first base material layer 1a and the second base material layer 2a are bonded to both surfaces of the conductive adhesive layer 1d, respectively. The conducting resin plays the effect of electrically conducting and gluing simultaneously, after coating in first substrate layer 1a, directly bonds second substrate layer 2a on conducting resin layer 1d, and simple process easily realizes.

Optionally, the conductive adhesive is conductive silver adhesive, and the conductive silver adhesive is coated on the surface of the substrate layer. The conductive silver adhesive is mainly composed of a resin matrix, conductive particles, a dispersing additive, an auxiliary agent and the like, wherein the conductive particles can be gold, silver, copper, aluminum, zinc, iron and nickel powder, graphite and other conductive compounds. The base resin of the conductive silver adhesive is an adhesive, and can be bonded at a proper curing temperature, and the conductive silver adhesive is adopted as a conductive material and an adhesive simultaneously, so that the process is convenient to realize.

In another embodiment, the conductive plating layer 1b is a metal plating layer formed on the surface of the base material layer by electroplating. The electroplated copper or nickel or metal alloy can be selected, so that the formed metal plating layer has good conductivity and stronger wear resistance, and the service life of the product is prolonged.

Alternatively, the material of the substrate layer a is polyimide. Polyimide insulating property is good, and mechanical properties is excellent, and the associativity is good, uses as substrate layer a, and is more stable with the combination of conductive coating 1b or conductive adhesive layer 1d, promotes the reliability of centring disk 1. The substrate layer a can also be a polyester film material, and the polyester film material has excellent performance and high toughness, can effectively support the conductive material layer b, and effectively improves the fatigue resistance of the centering support sheet 1.

As shown in fig. 6, the present invention further provides a sound device 100, wherein the sound device 100 includes a support 10, the support 10 is an annular frame, and is fixed to the magnetic circuit system 40 of the support 10, and a magnetic gap is formed in the magnetic circuit system 40; and a vibration system disposed opposite to the magnetic circuit system 40, the vibration system including a diaphragm 20 fixed to the support 10, a voice coil 30 disposed in the magnetic gap, and the aforementioned damper 1 elastically supporting the voice coil 30.

In this embodiment, the magnetic circuit system 40 includes a central magnetic circuit and a side magnetic circuit, a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit, and the centering support 1 is disposed at an end of the voice coil 30 away from the diaphragm 20. The centering branch pieces 1 comprise two centering branch pieces 1, the two centering branch pieces 1 are oppositely arranged on two short shaft sides of the voice coil 30, and the side magnetic circuit is provided with an avoiding space for avoiding the centering branch pieces 1. The inner fixing portion 12 of the damper 1 is connected to the voice coil 30, and the outer fixing portion 11 is fixed to the support 10, so as to feed power to the voice coil 30 and elastically support the voice coil 30 to vibrate in the axial direction during the operation of the sound generating device 100. In other embodiments, the centering branch piece 1 may also be an annular branch piece, or a plurality of branch pieces disposed at intervals, and may be disposed at one end of the voice coil 30 connected to the vibrating diaphragm 20, or at one end of the voice coil 30 far away from the vibrating diaphragm 20.

The utility model discloses sounder includes as before centering branch piece, and the concrete structure of this centering branch piece refers to aforementioned embodiment. Since the sound production device adopts all the technical schemes of all the embodiments, at least all the beneficial effects brought by all the technical schemes of all the embodiments are achieved, and the details are not repeated herein.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The centering support piece is characterized by comprising an outer fixing part, an inner fixing part and a connecting arm for connecting the inner fixing part and the outer fixing part, wherein at least part of the connecting arm is wavy, the centering support piece comprises at least one substrate layer and at least one conductive material layer compounded on the substrate layer, and the conductive material layer is a conductive coating or a conductive adhesive layer.

2. The centromere of claim 1, wherein the connecting arm comprises a first section connected to the outer fixation portion, a second section connected to the inner fixation portion, and an intermediate section connecting the first section and the second section, wherein the first section and the second section are planar sections, the intermediate section is wavy, and the intermediate section protrudes out of the plane of the first section and the second section.

3. The centering support sheet according to claim 1, wherein the centering support sheet comprises a substrate layer, and the conductive material layer is formed on one side surface of the substrate layer by electroplating or coating.

4. The rdl of claim 1, wherein the rdl comprises at least two substrate layers, and at least one layer of the conductive material is disposed between two adjacent substrate layers.

5. The centering chip of claim 4, wherein the substrate layer comprises a first substrate layer and a second substrate layer, the conductive material layer is a conductive coating, one side of the conductive coating is bonded to the first substrate layer, and the other side of the conductive coating is bonded to the second substrate layer through a glue layer.

6. The centering chip as claimed in claim 4, wherein the substrate layer comprises a first substrate layer and a second substrate layer, the conductive material layer is a conductive adhesive layer, and the first substrate layer and the second substrate layer are respectively bonded to two surfaces of the conductive adhesive layer.

7. The centering chip of claim 1, wherein the conductive adhesive is a conductive silver adhesive, and the conductive silver adhesive is coated on the surface of the substrate layer.

8. The rdl of claim 1, wherein the conductive plating layer is a metal plating layer formed by electroplating on the surface of the substrate layer.

9. The rdl of claim 1, wherein the material of the substrate layer is polyimide.

10. A sound-producing device, characterized in that it comprises

The bracket is an annular frame;

the magnetic circuit system is fixed on the bracket and forms a magnetic gap;

a vibration system, comprising a diaphragm fixed to the bracket, a voice coil disposed in the magnetic gap, and the damper according to any one of claims 1 to 9 elastically supporting the voice coil.