WO2019062859A1

WO2019062859A1 - Receiver

Info

Publication number: WO2019062859A1
Application number: PCT/CN2018/108346
Authority: WO
Inventors: 魏旦丰
Original assignee: 深圳倍声声学技术有限公司
Priority date: 2017-09-28
Filing date: 2018-09-28
Publication date: 2019-04-04
Also published as: CN107809715B; CN107809715A

Abstract

Disclosed in embodiments of the present application is a receiver, comprising: a lower housing; a moving-iron unit disposed in the lower housing; a connecting rod with one end connected to the moving-iron unit; a diaphragm comprising a support, a thin film, and a vibrating wing, the thin film being fixed to the support, the vibrating wing being fixed to the thin film, and one surface of the support being fixed together with the lower housing by soldering; and an upper housing fixed together with the other surface of the support by soldering, wherein the upper housing is further provided with a sound outlet. By means of the above solution, the bonding strength of different parts of the receiver is enhanced and the production efficiency is improved.

Description

a receiver

The present application claims priority to Chinese Patent Application Serial No. JP-A------------

Technical field

The present application relates to the field of moving iron receivers, and in particular to a receiver.

Background technique

The moving iron receiver is mainly used in audio equipment such as earphones and hearing aids. Due to its small size and high frequency performance, it is favored by customers. At present, the assembly of the receiver is divided into two parts, a front cavity part and a rear cavity part, which are separated by a diaphragm, wherein the front cavity contains an upper case and a diaphragm (as shown in FIG. 1), both of which The way and strength of the joint directly determines the sound pressure and high frequency performance of the receiver. Due to the design requirements of the product, the diaphragm needs to be placed in the upper shell, and then the operator uses the glue coater under the microscope. Apply glue to the boundary between the peripheral edge of the sheet and the upper shell, and then cure the glue by baking at a high temperature to join the two together.

In the process of implementing the present application, the inventors have found that the related art has the following problems: manual coating is easy to age, and production efficiency is not high.

Summary of the invention

The technical problem mainly solved by the embodiments of the present application is how to redesign the assembled structure of the receiver to increase the bonding strength of various parts of the receiver and improve the production efficiency.

In order to solve the above technical problem, the embodiment of the present application provides the following technical solutions:

The embodiment of the present application provides a receiver, including:

Lower case

a moving iron unit disposed in the lower casing;

a connecting rod having one end connected to the moving iron unit;

a diaphragm comprising a bracket, a film and a flap, the film being fixed to the bracket, the flap being fixed to the film, a surface of the bracket being welded and fixed to the lower shell;

The upper case is soldered to the other surface of the bracket, and the upper case is further provided with a sound hole.

Optionally, the lower case includes a bottom plate and a lower side plate extending from an edge of the bottom plate, wherein the lower side plate is perpendicular to the bottom plate;

One surface of the bracket is welded and fixed to an end surface of the lower side plate away from one end of the bottom plate.

Optionally, a surface of the bracket is further provided with a first positioning rib;

A first positioning groove is disposed on an end surface of the lower side of the bottom plate, and the first positioning groove is configured to receive the first positioning protrusion.

Optionally, the upper case includes a top plate and an upper side plate extending from an edge of the top plate, wherein the upper side plate is perpendicular to the top plate;

The other surface of the bracket is welded and fixed to an end surface of the upper side plate away from one end of the top plate.

Optionally, the other surface of the bracket is further provided with a second positioning rib;

A second positioning groove is disposed on the end surface of the upper side plate away from the end of the top plate, and the second positioning groove is configured to receive the second positioning protrusion.

Optionally, the receiver further includes a sound emitting tube and a fixing portion;

The fixing portion is coupled to the sound emitting cylinder, and the fixing portion is configured to be fixed to the upper and lower shells;

The sound emitting tube is in communication with the sound emitting hole when the fixing portion is fixed to the upper case.

Optionally, the fixing portion includes a first flat plate portion and a second flat plate portion, the first flat plate portion and the second flat plate portion are connected and perpendicular, and the second flat plate portion is provided with a first opening, One end of the sound tube is fixed to the first opening,

a surface of the first flat plate portion is provided with a first fixing block, a surface of the second flat plate portion is provided with a second fixing block, the top plate is provided with a first fixing groove, and the lower side plate is provided with a second fixing a slot, the first fixing block is engaged with the first fixing slot, and the second fixing block is engaged with the second fixing slot to fix the fixing portion with the upper shell and the lower shell.

Optionally, the first fixed block and the second fixed block have a triangular cross section;

The shape of the first fixing groove cross section and the second fixing groove longitudinal section are both triangular.

Optionally, the receiver further includes a terminal;

The lower shell is further provided with a second opening;

The terminal is inserted into the second opening, and an end of the terminal penetrating into the lower case is connected to a coil of the moving iron unit.

Optionally, the number of the terminals is two, and the number of the second openings is also two;

Two of the terminals are respectively inserted into the two second openings, and two ends of the two terminals penetrate into the lower casing and two ends of the coil of the moving iron unit connection.

The beneficial effects of the embodiments of the present application are: different from the prior art, the embodiment of the present application provides a receiver, including a lower case; a moving iron unit disposed in the lower case; and a connecting rod having one end and the The moving iron unit is connected; the diaphragm includes a bracket, a film and a vibration, the film is fixed to the bracket, the vibration wing is fixed to the film, and a surface of the bracket is welded and fixed to the lower shell; a shell, the upper shell being welded and fixed to another surface of the bracket, wherein the upper shell is further provided with a sound hole. Through the above scheme, the bonding strength of each part of the receiver can be increased and the production efficiency can be improved.

DRAWINGS

The one or more embodiments are illustrated by the accompanying drawings, which are not to be construed as limiting. The drawings in the drawings do not constitute a scale limitation.

1 is a schematic view showing the assembly of a receiver in the prior art;

2 is a schematic structural diagram of a receiver provided by an embodiment of the present application;

3 is a schematic diagram of a lower case in a receiver according to an embodiment of the present application;

4 is a schematic diagram of a diaphragm in a receiver provided by an embodiment of the present application;

FIG. 5 is a schematic overall view of a receiver provided by an embodiment of the present application.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that when an element is described as being "fixed" to another element, it can be directly on the other element or one or more of the elements in the middle. When an element is referred to as "connected" to another element, it can be a <RTI ID=0.0> </ RTI> </ RTI> <RTIgt; The terms "vertical," "horizontal," "left," "right," and the like, as used in this specification, are for the purpose of illustration.

Unless otherwise defined, all technical and scientific terms used in the specification are the same meaning The terms used in the specification of the present application are for the purpose of describing the specific embodiments and are not intended to limit the application. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

FIG. 2 is a schematic structural diagram of a receiver according to an embodiment of the present disclosure, which includes:

a lower casing 10; a moving iron unit 20 disposed in the lower casing 10; a connecting rod 30 having one end connected to the moving iron unit 20; a diaphragm 40 (see FIG. 4) including a bracket 401, a film 402 and a vibration a wing 403, the film 402 is fixed to the bracket 401, the vibration wing 403 is fixed to the film 402, a surface of the bracket 401 is welded and fixed to the lower casing 10; an upper casing 50, the upper casing The other surface of the bracket 401 is welded and fixed, and the upper casing 50 is further provided with a sound hole 501. Since the moving iron unit 20 is fixed inside the lower casing 10, the receiver in this embodiment is divided into three large portions, that is, the lower casing 10, the diaphragm 40, and the upper casing 50, as viewed from the overall structure. In part, such a structural design facilitates automated and efficient assembly of the receiver as a whole.

The lower case 10: please refer to FIG. 3, which includes a bottom plate 101 and a lower side plate 102 extending from the edge of the bottom plate, wherein the lower side plate 102 is perpendicular to the bottom plate 101; a surface of the bracket 401 is The lower side plate 102 is welded and fixed away from the end surface of one end of the bottom plate 101.

In this embodiment, the bottom plate 101 and the lower side plate 102 may be integrally formed by stamping, or the two parts may be separately designed and then welded together; when integrally stamped, the thickness of the bottom plate 101 and the lower side plate 102 are Consistently, when prepared separately, the thickness may be different, but not too thick, too thick and does not conform to the characteristics of the small micro-product of the receiver as a whole, and it is easy to squeeze the installation space of other components in the receiver when the size of the receiver is constant. Affecting the acoustic performance of other components, of course, the bottom plate 101 and the lower side plate 102 should not be too thin, and the thickness thereof should ensure that the receiver can resist a certain mechanical impact; the height of the lower side plate 102 is slightly higher than the movement provided in the lower casing 10. The area of the iron unit 20 and the bottom plate 101 is also slightly larger than the area of the moving iron unit 20, so as to ensure that the moving iron unit 20 can be nested in the lower casing 10 at the same time, and the internal space of the lower casing 10 is fully utilized to make the structure of the entire receiver. Compact and stable.

It can be understood that the end surface of the lower side plate 102 away from the end of the bottom plate 101 may further be provided with a first positioning groove (not shown in the drawing) corresponding to the first positioning groove at the bracket 401. A surface is further provided with a first positioning rib (not shown in the drawing), the first positioning groove is for receiving the first positioning rib; when the lower case 10 and the diaphragm 40 are actually assembled, the first need After the two are stably fixed, the two are welded by laser welding, and the aforementioned stable positioning of the lower casing 10 and the diaphragm 40 can be conveniently achieved by providing the first positioning groove and the first positioning rib. Moreover, if the thickness of the lower side plate 102 is allowed, two positioning grooves may be disposed on the end surface of the lower side surface 102 away from the end of the bottom plate 101. Accordingly, two positioning positions may be provided on one surface of the bracket 401. The ribs accommodate the two positioning grooves to make the fixing of the lower case 10 and the diaphragm 40 more stable.

The connecting rod 30 has a lower end specifically connected to the vibrating reed of the moving iron unit 20, and an upper end thereof is connected to the diaphragm 40. The vibrating reed itself is correspondingly changed due to the alternating current of the coil in the moving iron unit 20. The upper and lower sides vibrate, and then the connecting rod 30 conducts the vibration to the portion of the diaphragm 40, and the diaphragm 40 agitates the air in the front chamber of the moving iron unit at the same frequency to emit sound. It should be noted that when the connection between the connecting rod 30 and the diaphragm 40 is at the center of the diaphragm 40, the vibration amplitude of the diaphragm 40 can be effectively made larger, and the sound quality of the receiver can be ensured.

The diaphragm 40: see FIG. 4, which includes a bracket 401, a film 402 and a flap 403, the film 402 is fixed to the bracket 401, and the flap 403 fixes the film 402, a surface of the bracket 401 The lower casing 10 is welded and fixed, wherein the bracket 401 has a frame-shaped structure with an inner diameter and an outer diameter, and the outer diameter minus the inner diameter is the lateral wall thickness of the bracket 401.

In this embodiment, the vibration wing 403 is specifically fixed inside the bracket 401, and the bracket 401 is equivalent to the support skeleton of the entire diaphragm 40, and the inner diameter thereof is the same as the outer diameter of the vibration wing 403 after the film 402 is attached, as described above. The vibration of the vibrating reed of the automatic iron unit transmitted by the connecting rod 30 is transmitted to the vibrating wing 403, and then the vibrating wing 403 will drive the film 402 covering the vibration thereof, and the result of the vibration is in the front cavity of the moving iron unit. The air is forced to vibrate and then emit sound. The film 402 is a core component of the moving iron unit. It is generally made of a polymer material. Because of its functional requirements for vibration and sound, its rigidity is very high. In the embodiment, the film 402 can be made of a graphene material, which is the highest strength known to man. Studies have shown that it takes about 20,000 cows to break the graphene of about 100 nm thick, and the graphene is visible. The strength is high, and graphene also has good toughness and lightness. Therefore, the use of the graphene material to form the film 402 of the moving iron unit can improve the toughness and strength of the film 402. High service life of the iron unit, and by good toughness graphene material, reducing the sound distortion, has improved dramatically for iron unit of sound quality and range, improve market competitiveness.

It should be noted that the bracket 401 is also a portion that is specifically connected to the upper casing 50 and the lower casing 10. Specifically, the first positioning rib is specifically mounted on a side of the bracket 401 facing the lower casing 10, and faces the other side of the bracket 401. One side of the upper case 50 is provided with a second positioning rib, and the two positioning ribs function the same, that is, to make the fixing of the fixed diaphragm 40 and the lower case 10 and the upper case 50 more stable before the welding process.

The upper case 50: the upper case 50 includes a top plate 502 and an upper side plate 503 extending from an edge of the top plate, wherein the upper side plate 503 is perpendicular to the top plate 502; the other surface of the bracket 401 is The upper side plate 503 is welded and fixed away from the end surface of one end of the top plate 502.

In the present embodiment, the top plate 502 and the upper side plate 503 may also be integrally stamped or separately prepared and then welded. The thickness of the upper side plate 503 and the lower side plate 102 are the same, but the height is much smaller than the lower side. The height of the plate 102 is about 1/5 of the latter, and a second positioning groove is disposed on an end surface of the upper side plate 503 away from the end of the top plate 502, and correspondingly, is disposed on a side of the bracket 401 facing the top plate 502. There is a second positioning rib, which is also disposed on the side of the bracket 401 facing the top plate 502, and is then received by the second positioning groove.

In the present embodiment, referring to FIG. 5, the receiver further includes a sound emitting cylinder 60 and a fixing portion 70, the fixing portion 70 is coupled to the sound emitting cylinder 60, and the fixing portion 70 is configured to be fixed to the The upper case 50 and the lower case 10; when the fixing portion 70 is fixed to the upper case 50, the sound output tube 60 is in communication with the sound hole 501, and the sound hole 501 is disposed on the upper case 50. The fixing portion 70 includes a first flat plate portion 701 and a second flat plate portion 702 which are connected and perpendicular, and the second flat plate portion 702 is provided with a first opening (attached) Not shown in the figure), one end of the sound output cylinder 60 is fixed at the first opening,

The surface of the first flat plate portion 701 is provided with a first fixing block (not shown in the drawing), the surface of the second flat plate portion 702 is provided with a second fixing block 7022, and the top plate 502 is provided with a first fixing groove (not shown in the drawing), the lower side plate 102 is provided with a second fixing groove (not shown in the drawing), the first fixing block is engaged with the first fixing groove, and the second fixing block The card 7022 is engaged with the second fixing groove to fix the fixing portion 70 with the upper case 50 and the lower case 10. The first fixing block and the second fixing block 7022 have a triangular cross section; the first fixing groove cross section and the second fixing groove longitudinal section have a triangular shape. It can be understood that the direct locking manner of the two fixing blocks and the fixing groove can be replaced by welding, so that the coupling between the upper portion 50 and the lower casing 10 by the fixing portion 70 is more stable.

In this embodiment, the receiver further includes a terminal 80, and the lower casing 10 is further provided with a second opening (not shown in the drawing); the terminal 80 is inserted into the second opening, wherein One end of the terminal 80 penetrating into the lower case 10 is connected to the coil of the moving iron unit. The number of the terminals 80 is two, and the number of the second openings is also two; specifically, the two terminals 80 are respectively inserted into the two second openings, and two One end of the terminal 80 penetrating into the lower casing 10 is respectively connected to the two line ends of the coil of the moving iron unit in the receiver. The terminal 80 is used to access a corresponding signal current.

The embodiment of the present application provides a receiver, the specific structure of which is as described above. As a whole, the structure of the receiver is designed from the perspective of automatic mass production of the machine. Specifically, when designing the bracket 401, When the inner diameter is constant, the wall thickness of the bracket 401 is increased laterally, that is, the length of the outer diameter is increased, so that the outer diameter is aligned with the upper and lower outer casings of the receiver, and then the upper boss 50 can be removed to remove the inner boss. The depth is lowered to facilitate the welding and fixing between the upper case 50 and the diaphragm 40; when the parts are assembled, after the internal assembly of the lower case 10 is completed (mainly the moving iron unit 20 is fixed to the lower case 10), the lower case 10 is The semi-finished product composed of the moving iron unit 20 is placed in the welding fixture, and the diaphragm 40 is placed close to the lower casing 10 and flushed on both sides (ie, the first positioning groove is used to receive the first positioning). The ribs are then placed in the machine for automatic welding. After the vibration of the diaphragm 40 is completed, the upper casing 50 with the diaphragm 40 is attached to the upper casing 50 (ie, the second positioning groove accommodates the second positioning rib), and finally Bracket 4 for upper case 50 and diaphragm 40 The part 01 is automatically welded, so that the main structure of the aforementioned receiver is obtained, and the foregoing series of assembly processes can be automated, and after production verification, the three-layer assembly process (ie, as described above, the receiver) The structure is divided into three main parts, namely, the design of the lower case 10, the diaphragm 40 and the upper case 50, the lower case 10 and the diaphragm 40 are welded first, and the upper case 50 is welded to the other side of the diaphragm 40). The efficiency is much higher than the diaphragm embedding process design in the prior art, and after the glue is changed to the welding, not only the operation is simple, but also the joint strength of the components of the receiver is greatly improved, and the processing requirements of the upper shell 50 are reduced. Reduce costs and increase productivity. In addition, for some receiver customer requirements, the lateral wall thickness of the bracket 401 can be removed during design, and the size of the vibration wing 403 and the film 402 fixed to the bracket 401 can be increased, so that the sound pressure of the receiver can be maximized. The output, the foregoing design, is equivalent to the overall size limitation of the diaphragm, and unlike the prior art, the diaphragm is nested in the upper case, and the size of the increase is small due to the limitation of the upper case. Obviously, it is impossible to maximize the sound pressure output of the receiver.

It should be noted that the preferred embodiments of the present application are given in the specification of the present application and the accompanying drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described in the specification. The examples are not intended to be limiting as to the scope of the present application, and the embodiments are provided to make the understanding of the disclosure of the present application more comprehensive. Further, each of the above technical features is further combined with each other to form various embodiments that are not enumerated above, and are considered to be within the scope of the specification of the present application; further, those skilled in the art can improve or change according to the above description. All such improvements and modifications are intended to fall within the scope of the appended claims.

Claims

A receiver characterized by comprising:

Lower case (10);

a moving iron unit (20) disposed in the lower casing (10);

a connecting rod (30) having one end connected to the moving iron unit (20);

a diaphragm (40) comprising a bracket (401), a membrane (402) and a flap (403), the membrane (402) being fixed to the bracket (401), the flap (403) for fixing the a film (402), a surface of the bracket (401) is welded and fixed to the lower shell (10);

The upper case (50) is soldered to the other surface of the bracket (401), wherein the upper case (50) is further provided with a sound hole.
The receiver according to claim 1, wherein

The lower casing (10) includes a bottom plate (101) and a lower side plate (102) extending from the edge of the bottom plate, wherein the lower side plate (102) is perpendicular to the bottom plate (101);

One surface of the bracket (401) is welded and fixed to an end surface of the lower side plate (102) away from one end of the bottom plate (101).
The receiver according to claim 2, wherein

a surface of the bracket (401) is further provided with a first positioning rib;

A first positioning groove is disposed on the end surface of the lower side plate (102) away from the end of the bottom plate (101), and the first positioning groove is configured to receive the first positioning rib.
The receiver according to claim 3, characterized in that

The upper casing (50) includes a top plate (502) and an upper side plate (503) extending from the edge of the top plate, wherein the upper side plate (503) is perpendicular to the top plate (502);

The other surface of the bracket (401) is welded and fixed to the end surface of the upper side plate (503) away from one end of the top plate (502).
The receiver according to claim 4, wherein

The other surface of the bracket (401) is further provided with a second positioning rib;

A second positioning groove is disposed on an end surface of the upper side plate ( 503 ) away from the end of the top plate ( 502 ), and the second positioning groove is configured to receive the second positioning ridge.
The receiver according to claim 5, wherein said receiver further comprises a sound emitting tube (60) and a fixing portion (70);

The fixing portion (70) is connected to the sound emitting cylinder (60), and the fixing portion (70) is used for fixing to the upper shell (50) and the lower shell (10);

When the fixing portion (70) is fixed to the upper casing (50), the sound emitting cylinder (60) communicates with the sound emitting hole (501).
A receiver according to claim 6, wherein

The fixing portion (70) includes a first flat plate portion (701) and a second flat plate portion (702), the first flat plate portion (701) and the second flat plate portion (702) are connected and perpendicular, the second The flat plate portion (702) is provided with a first opening, and one end of the sound emitting cylinder (60) is fixed at the first opening;

The surface of the first flat plate portion (701) is provided with a first fixing block, the surface of the second flat plate portion (702) is provided with a second fixing block (7022), and the top plate (502) is provided with a first fixing block. a slot, the lower side plate (102) is provided with a second fixing slot, the first fixing block is engaged with the first fixing slot, and the second fixed block card (7022) is engaged with the second slot The groove is fixed to fix the fixing portion (70) to the upper case (50) and the lower case (10).
The receiver according to claim 7, wherein

The first fixed block and the second fixed block (7022) have a triangular cross section;

The shape of the first fixing groove cross section and the second fixing groove longitudinal section are both triangular.
The earphone according to claim 1, wherein said receiver further comprises a terminal (80);

The lower casing (10) is further provided with a second opening;

The terminal (80) is inserted into the second opening, and an end of the terminal (80) penetrating into the lower casing (10) is connected to a coil of the moving iron unit.
The receiver according to claim 9, wherein the number of the terminals (80) is two, and the number of the second openings is also two;

Two of the connecting terminals (80) are respectively inserted into the two second openings, and one end of the two connecting terminals (80) penetrating into the lower casing (10) and the moving The two wire ends of the coil of the iron unit are connected.