WO2019196138A1

WO2019196138A1 - Armature and receiver

Info

Publication number: WO2019196138A1
Application number: PCT/CN2018/084613
Authority: WO
Inventors: 陈斌; 杨飚
Original assignee: 深圳倍声声学技术有限公司
Priority date: 2018-04-12
Filing date: 2018-04-26
Publication date: 2019-10-17
Also published as: CN108322877A

Abstract

Embodiments of the present application relate to the field of receivers, and provide an armature and a receiver comprising the armature. The armature comprises: a yoke, the yoke comprising a base portion and two support portions extending from both sides of the base portion, a receiving space being constituted by the two support portions and the base portion, and the side of the receiving space away from the base portion being an opening; a first magnet received in the receiving space and fixed to the base potion; a coil located at one side of the yoke and fixed to the yoke, the coil being provided with a through hole; a reed, the reed comprising a fixing portion, a connecting portion, and a vibrating portion, the connecting portion being configured to connect the fixing portion and the vibrating portion, the vibrating portion passing through the through hole and being partially received in the receiving space, and the fixing portion being attached and fixed to the support portion; and a second magnet attached and fixed to the fixing portion. The structure of the armature of the present application is simple, so that an assembly process of the armature is simplified and automated production of the armature is achieved.

Description

Armature and receiver

Technical field

The present application relates to the field of moving iron receivers, and more particularly to an armature and a receiver including the same.

Background technique

The moving iron receiver, also known as the moving iron horn, is a sounding component. It is designed on the basis of the reed speaker, and it uses high-precision micro-machining technology. Through the miniaturization of parts and the adoption of new materials, it maintains its high acoustic-electric conversion rate and overcomes the frequency and distortion of acoustic-electric conversion. Big deficiency. Due to its small size, low power consumption and high output, it is widely used in hearing aids, covert communication, high-fidelity headphones and other fields.

In a moving iron receiver, the armature is an important component, and the armature generally includes neodymium iron, coils, magnets, and reeds. The main function of ferroniobium is to form a magnetic circuit by magnetism. The magnet is used to provide a constant magnetic field. The reed is made of a material with high magnetic permeability and placed inside the coil. When a changing electrical signal is fed into the coil, the coil changes current. The Lorentz force is changed, and the reed is reciprocated up and down by the Lorentz force.

In the process of implementing the embodiments of the present application, the inventor found that when the existing armature is assembled, a plastic piece is needed as an assembly jig between the ferroniobium, the coil and the magnet to ensure the position of the three, and the coil is first inserted into the plastic piece. Then insert the ferroniobium, and insert the two magnets directly into the bismuth iron and the plastic sheet, and fix it by baking. The process is very complicated and cannot be automated.

Summary of the invention

In order to solve the problem that the armature assembly process in the prior art is complicated and the automatic production cannot be realized, the embodiment of the present application provides an armature having a simple structure and a receiver including the armature, so that the assembly process of the armature is simplified. Thereby an automated production of the armature is achieved.

In a first aspect, an embodiment of the present application provides an armature, including:

The ferroniobium includes a base, and two support portions extend from two sides of the base, the two support portions and the base portion constitute a receiving space, and a side of the receiving space away from the base portion is Opening

a first magnet is received in the receiving space and fixed to the base;

a coil on one side of the ferroniobium and fixed to the ferroniobium, the coil being provided with a through hole;

a reed, the reed includes a fixing portion, a connecting portion and a vibrating portion, the connecting portion is configured to connect the fixing portion and the vibrating portion, the vibrating portion passes through the through hole and is partially received in the receiving portion a space, the fixing portion is attached and fixed to the support portion;

The second magnet is attached and fixed to the fixing portion and is received in the receiving space.

Optionally, the reed further includes two positioning portions, and the two positioning portions are spaced apart from a side of the fixing portion and away from the connecting portion.

Optionally, an extending portion extends from the two supporting portions away from the receiving space, and the extending portion is in contact with the fixing portion.

In a second aspect, an embodiment of the present application provides a receiver, including an armature and a housing, wherein the armature is received in the housing, and the armature includes:

a first magnet is received in the receiving space and fixed to the base;

Optionally, the housing includes a first board body, a second board body, and an annular board body, wherein the first board body and the second board body are respectively located on opposite sides of the annular board body, The first plate body, the second plate body and the annular plate body are enclosed to form an accommodating space, and the armature is received in the accommodating space.

Optionally, the annular plate body includes a first sidewall, and a second sidewall and a third sidewall extend from opposite sides of the first sidewall, and the third sidewall extends from the second sidewall to the third sidewall The sidewall extends a fourth sidewall, and a fifth sidewall extends from the third sidewall toward the second sidewall, and the fourth sidewall and the fifth sidewall are fixed, the first The side wall abuts the positioning portion.

Optionally, one of the fourth side wall and the fifth side wall is provided with a bump, and the other is provided with a notch, and the protrusion is received in the notch, so that the fourth side wall and The fifth side wall is locked and fixed.

Optionally, the receiver further includes two pins disposed on the coil, and the second board and the fifth side wall are adjacent to a side of the first board toward the second board The recess is provided with a groove through which the two pins extend out of the accommodating space.

Optionally, the receiver further includes a diaphragm assembly and a connecting rod, the connecting rod is configured to connect the diaphragm assembly and the vibrating portion, wherein the second sidewall extends toward the third sidewall There is a boss, and the third sidewall extends to the second sidewall with a boss for supporting the diaphragm assembly.

Compared with the prior art, the armature iron of the armature provided by the embodiment of the present application includes a base and two support portions extending from both sides of the base, the first magnet is fixed to the base, and the coil is fixed to the stellite One side of the second magnet is fixed to the fixing portion of the spring, and the fixing portion and the supporting portion are attached and fixed, thereby completing assembly of the armature, simplifying assembly process of the armature, and Automated production of the armature is achieved.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief description of the drawings used in the embodiments of the present application will be briefly made below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a perspective view of an armature provided in Embodiment 1 of the present application;

2 is a perspective view of the armature iron of the armature provided in the first embodiment;

Figure 3 is a perspective view of the first magnet of the armature provided in the first embodiment;

4 is a perspective view of the pin of the armature and the components of the coil provided in Embodiment 1;

Figure 5 is a perspective view of the reed of the armature provided in the first embodiment;

6 is an exploded perspective view of a receiver provided in Embodiment 2 of the present application;

Figure 7 is a perspective view of the annular plate body of the receiver provided in the second embodiment;

Fig. 8 is a schematic view showing the state of the flat plate of the annular plate body of the receiver provided in the second embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

电枢100 Armature 100	锷铁11 锷铁11	基部110 Base 110	支撑部111 Support portion 111
延伸部112 Extension 112	收容空间113Containing space 113	第一磁体12 First magnet 12	第二磁体13 Second magnet 13
线圈14 Coil 14	通孔140Through hole 140	引脚15 Pin 15	簧片16 Reed 16

固定部160Fixing part 160	振动部161 Vibration unit 161	连接部162 Connection portion 162	定位部163 Positioning unit 163
受话器200 Receiver 200	壳体21 Housing 21	第一板体211 First plate body 211	第二板体212 Second plate 212
环形板体213 Annular plate body 213	第一侧壁2131 First side wall 2131	第二侧壁2132 Second side wall 2132	第三侧壁2133 Third side wall 2133
第四侧壁2134 Fourth side wall 2134	第五侧壁2135 Fifth side wall 2135	凸块2136Bump 2136	缺口2137Gap 2137
凹槽2138Groove 2138	凸台2139 Boss 2139	振膜组件22 Diaphragm assembly 22	连杆23Connecting rod 23
电路板24 Circuit board 24

detailed description

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 central elements can be present. When an element is referred to as "snap" another element, it can be directly snapped to the other element, or one or more of the elements can be present in between. The terms "upper", "lower", "left", "right" and the like are used in this specification for the purpose of illustration only.

Unless otherwise defined, all technical and scientific terms used in the specification are the same meaning The terms used in the description 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.

Embodiment 1

As shown in FIG. 1 , an armature 100 according to Embodiment 1 of the present invention is applied to a receiver, and the armature 100 mainly includes a neodymium iron 11 , a first magnet 12 , a second magnet 13 , a coil 14 , and a pin 15 . Reed 16.

As shown in FIGS. 1 and 2, the neodymium iron 11 includes a base portion 110, two support portions 111 extending from both sides of the base portion 110, and extension portions extending from outer sides of the two support portions 111, respectively. 112. The sill iron 11 is substantially in the shape of a U. The two supporting portions 111 and the base portion 110 form a receiving space 113. The side of the receiving space 113 away from the base portion 110 is an opening. The main function is to conduct magnetism and form a magnetic circuit. The neodymium iron 11 is made of a material having high magnetic permeability, such as an alloy material composed of nickel (Ni, Nickel), niobium (Nb, Niobium), carbon (C, carbon), and iron (Fe, Ferrum).

As shown in FIG. 3, the first magnet 12 is a permanent magnet and has a substantially flat structure, and is received in the receiving space 113 and fixed to the base 110.

As shown in FIG. 4, the coil 14 has a ring structure, and a through hole 140 is disposed in the middle of the coil 14. The coil 14 is a carrier of current.

The two pins 15 are disposed on the coil 14 and electrically connected to the coil 14. The coil 14 is connected to the external wiring through the two pins 15. The pin 15 is an elongated columnar structure made of a highly conductive material such as gold and gold alloys, silver and silver alloys, copper and copper alloys.

As shown in FIGS. 1 and 5, the reed 16 includes a flat fixing portion 160, a flat vibrating portion 161, and an arc-shaped connecting portion 162 connecting the fixing portion 160 and the vibrating portion 161. The vibrating portion 161 passes through the through hole 140 of the coil 14 and is partially housed in the accommodating space 113. The fixing portion 160 is attached and fixed to the supporting portion 111 and the extending portion 112. Two positioning portions 163 extend from one side of the fixing portion 160 in a direction away from the connecting portion 162. The reed 16 is made of a material having a high magnetic permeability, and the material of the reed 16 is the same as that of the neodymium iron 11. The fixing portion 160 of the reed 16 and the neodymium iron 11 are combined to form a closed loop magnetic conductive circuit.

As shown in FIG. 3, the second magnet 13 and the first magnet 12 are identical in structure and size, are located in the receiving space 113 and are fixed on the fixing portion 160, and the second magnet 13 is a flat plate. The structure is a permanent magnet, and a constant DC magnetic field is formed between the second magnet 13 and the first magnet 12.

When assembling the armature 100, the first magnet 12 and the coil 14 provided with the lead 15 are assembled with the neodymium iron 11, and specifically, the first magnet 12 is inserted from the opening direction of the accommodating space 113. The receiving space 113 is fixed to the base 110 of the neodymium iron 11, and the coil 14 provided with the pin 15 is fixed from one side of the neodymium iron 11 and the neodymium iron 11; secondly, the second The magnet 13 is fixed to the fixing portion 160 of the reed 16 . Specifically, the second magnet 13 can be laser welded to the fixing portion 160 , and then the vibration of the reed 16 to which the second magnet 13 is fixed can be vibrated. The portion 161 is inserted into the through hole 140 of the coil 14 and received in the receiving space 113; finally, the fixing portion 160 of the reed 16 is fixed to the supporting portion 111 and the extending portion 112 of the neodymium iron 11 Specifically, the fixing portion 160 may be laser welded to the supporting portion 111 and/or the extending portion 112 to complete assembly of the armature 100.

Compared with the prior art, the assembly process and the assembly process of the armature 100 of the embodiment of the present application are relatively simple, and the positioning of the auxiliary fixture is not required, and the automatic production can be realized, and the production efficiency of the armature 100 is improved.

Embodiment 2

As shown in FIG. 6 , in the receiver 200 provided by the embodiment of the present application, the receiver 200 includes a housing 21 , an armature 100 , a diaphragm assembly 22 , a connecting rod 23 , and a circuit board 24 .

The armature 100 is the same as that in the first embodiment, and is not described herein.

The housing 21 includes a first plate body 211, a second plate body 212, and an annular plate body 213. The first body and the second plate body 212 are respectively located on opposite sides of the annular plate body 213. A plate body 211, the second plate body 212, and the annular plate body 213 constitute an accommodation space, and the armature 100 is received in the accommodation space.

The first plate body 211 has a flat shape, and the armature 100 is welded and fixed to the first plate body 211. Specifically, the base portion 110 is laser welded to the first plate body 211.

As shown in FIG. 7 , the annular plate body 213 is annular, and includes a first sidewall 2131, a second sidewall 2132, a third sidewall 2133, a fourth sidewall 2134, and a fifth sidewall 2135. The two sidewalls 2132 and the third sidewall 2133 are oppositely extended from the two sides of the first sidewall 2131, and the fourth sidewall 2134 extends from the second sidewall 2132 to the fifth sidewall. The second side wall 2135 extends from the third side wall 2133 toward the second side wall 2132, and the first side wall 2131 and the positioning portion 163 on the reed 16 Abutting, for positioning the annular plate body 213. The fourth side wall 2134 is provided with a protrusion 2136, and the fifth side wall 2135 is provided with a notch 2137. The protrusion 2136 is received in the notch 2137, so that the fourth side wall 2134 and the first side The five side walls 2135 are snap-fitted.

It is to be understood that, in other embodiments, the bump 2136 is disposed on the fifth sidewall 2135, the recess 2137 is disposed on the fourth sidewall 2134, and the bump 2136 and The number of grooves 2137 is equivalently varied, for example, two, three, four or other quantities greater than one.

It can be understood that in other embodiments, the fourth sidewall 2134 and the fifth sidewall 2135 may also adopt other fixing manners, for example, the fourth sidewall 2134 and the fifth sidewall 2135 are also Can be fixed by welding.

A side of the fourth side wall 2134 and the fifth side wall 2135 adjacent to the first plate body 211 extends to the second plate body 212 with a groove 2138, and two pins of the armature 100 15 extends through the recess 2138 out of the accommodating space to be in contact with the circuit board 24 located outside the accommodating space, thereby electrically connecting the coil 14 and the circuit board 24.

The second side wall 2132 extends to the third side wall 2133 with a plurality of bosses 2139, and the third side wall 2133 extends to the second side wall 2132 with a plurality of bosses 2139, the bosses 2139 is used to support the diaphragm assembly 22.

It can be understood that, as shown in FIG. 8 , the annular plate body 213 is first formed by a stamping process to form a flat annular plate body preform, and then the annular plate body preform is bent to form four bends; Finally, the fourth side wall 2134 and the fifth side wall 2135 are engaged and fixed to form the annular plate body 213.

The prior art housing 21 generally includes an upper casing and a lower casing, both of which are formed by a drawing process. In the embodiment, by setting the structure of the casing 21 to the first plate body 211, the second plate body 212 and the annular plate body 213, the first molding can be formed by a simple stamping process and a bending process. The housing 21 reduces the manufacturing cost and accuracy requirements of the housing 21, thereby reducing the cost and accuracy requirements of the receiver 200.

The diaphragm assembly 22 is located above the boss 2139 for connecting the vibrating portion 161 of the reed 16 and the diaphragm assembly 22, and the diaphragm assembly 22 is The vibrating portion 161 reciprocates to emit a sound.

The circuit board 24 is fixed to the fourth sidewall 2134 and is outside the fifth sidewall 2135 and is connected to the pin 15 for receiving an external command to control the coil 14 The magnitude of the current fed in, thereby controlling the magnitude of the sound emitted by the receiver 200.

When the receiver 200 is assembled, the armature 100 is first fixed to the first plate body 211; then the annular plate body 213 to which the circuit board 24 is fixed is stacked from a direction perpendicular to the first plate body 211 On the first plate body 211; then the connecting rod 23 to which the diaphragm assembly 22 is connected is disposed on the boss 2139; finally, the second plate body 212 is covered, thereby completing the receiver 200 Assembly.

In this embodiment, the assembly process of the receiver 200 is simply stacked and fixed from a direction perpendicular to the first plate 211, and the receiver 200 is realized by a change in the structure of the housing 21. The automation of the assembly improves the production efficiency of the receiver 200, realizing the mass production of the receiver 200.

In the prior art, when the armature 100 is assembled to the housing 21, the process of passing the pins 15 of the armature 100 from one side through the recess 2138 of the housing 21 requires manual completion and is inefficient. In the embodiment, the side of the fourth side wall 2134 and the fifth side wall 2135 adjacent to the first plate body 211 is recessed into the second plate body 212 with a recess 2138. When installed, The annular plate body 213 only needs to be stacked and fixed on the first plate body 211 from the direction perpendicular to the first plate body 211, the process is simple, the assembly can be automated, the assembly efficiency is improved, and the assembly efficiency is reduced. Labor cost.

When no audio current flows through the coil 14, the vibrating portion 161 of the reed 16 is in an equilibrium state in a constant magnetic field supplied from the first magnet 12 and the second magnet 13; when the alternating current is passed through the audio in the coil 14, the coil 14 is changed The current generates a varying Lorentz force, and the vibrating portion 161 reciprocates under the driving of the Lorentz force, and the diaphragm module 22 is driven by the connecting rod 23 to generate an acoustic wave, thereby completing the conversion of the electrical signal to the acoustic signal.

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

An armature, comprising:

The ferroniobium includes a base, and two support portions extend from two sides of the base, the two support portions and the base portion constitute a receiving space, and a side of the receiving space away from the base portion is Opening

a first magnet is received in the receiving space and fixed to the base;

a coil on one side of the ferroniobium and fixed to the ferroniobium, the coil being provided with a through hole;

a reed, the reed includes a fixing portion, a connecting portion and a vibrating portion, the connecting portion is configured to connect the fixing portion and the vibrating portion, the vibrating portion passes through the through hole and is partially received in the receiving portion a space, the fixing portion is attached and fixed to the support portion;

The second magnet is attached and fixed to the fixing portion and is received in the receiving space.
The armature according to claim 1, wherein the reed further comprises two positioning portions, and the two positioning portions are spaced apart from a side of the fixing portion away from the connecting portion. to make.
The armature according to claim 2, wherein an extending portion extends from the two supporting portions away from the receiving space, and the extending portion is in contact with the fixing portion.
An earphone, comprising an armature and a casing, the armature being received in the casing, the armature comprising:

The ferroniobium includes a base, and two support portions extend from two sides of the base, the two support portions and the base portion constitute a receiving space, and a side of the receiving space away from the base portion is Opening

a first magnet is received in the receiving space and fixed to the base;

a coil on one side of the ferroniobium and fixed to the ferroniobium, the coil being provided with a through hole;

a reed, the reed includes a fixing portion, a connecting portion and a vibrating portion, the connecting portion is configured to connect the fixing portion and the vibrating portion, the vibrating portion passes through the through hole and is partially received in the receiving portion a space, the fixing portion is attached and fixed to the support portion;

The second magnet is attached and fixed to the fixing portion and is received in the receiving space.
The receiver according to claim 4, wherein the reed further comprises two positioning portions, and the two positioning portions are extended from a side of the fixing portion to a direction away from the connecting portion. .
The receiver according to claim 5, wherein the housing comprises a first plate body, a second plate body and an annular plate body, wherein the first plate body and the second plate body are respectively located in the ring shape The first plate body, the second plate body and the annular plate body are formed to form an accommodating space, and the armature is received in the accommodating space.
The receiver according to claim 6, wherein the annular plate body comprises a first side wall, and a second side wall and a third side wall extend from opposite sides of the first side wall, The second sidewall extends a fourth sidewall toward the third sidewall, and a fifth sidewall extending from the third sidewall toward the second sidewall, the fourth sidewall and the fifth sidewall The sidewall is fixed, and the first sidewall abuts the positioning portion.
The receiver according to claim 7, wherein one of the fourth side wall and the fifth side wall is provided with a bump, and the other is provided with a notch, and the protrusion is received in the notch. The fourth side wall and the fifth side wall are engaged and fixed.
The receiver according to claim 7, wherein said receiver further comprises two pins disposed on said coil, said fourth side wall and said fifth side wall being adjacent to said first plate body One side of the second plate body is recessed with a groove, and the two pins extend out of the receiving space through the groove.
The earphone according to claim 7, wherein said receiver further comprises a diaphragm assembly and a link for connecting said diaphragm assembly and said vibrating portion, wherein said second side The wall extends to the third side wall with a boss, and the third side wall extends to the second side wall with a boss for supporting the diaphragm assembly.