CN108391215B

CN108391215B - Moving-iron telephone receiver

Info

Publication number: CN108391215B
Application number: CN201810386154.7A
Authority: CN
Inventors: 陈斌
Original assignee: Shenzhen Bellsing Acoustic Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2020-02-28
Anticipated expiration: 2038-04-26
Also published as: WO2019205490A1; CN108391215A

Abstract

The embodiment of the invention relates to the field of telephone receivers, and provides a moving iron telephone receiver, which comprises: the motor assembly is accommodated in the shell; wherein the motor assembly comprises: the two ends of the jaw iron are respectively fixed on the two side walls of the shell, the jaw iron and the shell are encircled to form an accommodating space, and the jaw iron and the shell form a ring-shaped magnetic conductive loop; the first magnet is accommodated in the accommodating space and fixed on the shell; the second magnet is contained in the containing space and fixed on the jaw iron. The blade of a sword iron with the casing constitutes one and accepts the accommodation space of first magnet with the second magnet to do first magnet with the second magnet constitutes an annular magnetic conduction return circuit, reduced the manufacturing cost of blade of a sword iron, and then reduced the manufacturing cost of moving iron receiver.

Description

Moving-iron telephone receiver

Technical Field

The invention relates to the technical field of telephone receivers, in particular to a moving iron telephone receiver.

Background

A moving-iron receiver, also called a moving-iron horn, is a sound generating element. The design is carried out on the basis of the reed loudspeaker, the high-precision micro-machining technology is exerted, the characteristic of high sound-electricity conversion rate is kept through the miniaturization of parts and the adoption of novel materials, and the defects of high sound-electricity conversion frequency response and high distortion are overcome. Due to the characteristics of small volume, low power consumption, high output and the like, the microphone is widely applied to the fields of hearing aids, covert communication, high-fidelity earphones and the like.

The existing moving-iron telephone receiver mainly comprises a shell, a motor assembly and a vibrating diaphragm assembly, wherein the motor assembly generally comprises a closed annular jaw iron and two magnets which are contained and fixed in the jaw iron.

In the process of implementing the embodiment of the present invention, the inventor finds that the existing jaw iron is in a closed ring shape, so as to form a ring-shaped magnetic conductive loop. When making the closed annular sword iron, generally adopt platelike sword iron raw materials to make through the cutting of a slow walking silk technology, on the one hand, after the cutting the middle sword iron raw materials of closed annular sword iron can't continue to seal the manufacturing of annular sword iron and become the waste material, makes the manufacturing cost of sword iron is higher, and then makes the manufacturing cost of moving iron receiver is higher.

Disclosure of Invention

In order to solve the problem that the manufacturing cost of the moving-iron telephone receiver in the prior art is high, the invention provides the moving-iron telephone receiver with low manufacturing cost.

The invention provides a moving-iron telephone receiver, which comprises: the motor assembly is accommodated in the shell; wherein the motor assembly comprises:

the two ends of the jaw iron are respectively fixed on the two side walls of the shell, the jaw iron and the shell are encircled to form an accommodating space, and the jaw iron and the shell form an annular magnetic conduction loop;

the first magnet is accommodated in the accommodating space and fixed on the shell;

the second magnet is contained in the containing space and fixed on the jaw iron.

Optionally, the jaw iron includes a base portion, extending portions extending from both sides of the base portion, and fixing portions extending from the extending portions;

the shell comprises a first shell and a second shell, the first shell comprises a first body, two first side walls and two second side walls, the two first side walls oppositely extend from two sides of the first body, the two second side walls are connected with the two first side walls, and the fixing part is fixed with the first side walls;

the second shell comprises a second body, two third side walls and two fourth side walls, wherein the two third side walls extend oppositely from two sides of the second body, the two fourth side walls are connected with the two third side walls, one of the first side wall and the third side walls is provided with a groove, and the groove accommodates the fixing part.

Optionally, the blade of a sword iron, two first lateral walls and first body surround and form accommodation space, first magnet accept in accommodation space just is fixed in on the first body, the second magnet accept in accommodation space just is fixed in on the basal portion.

Optionally, the jaw iron is in a flat plate shape and includes fixing portions located at two sides of the jaw iron, the housing includes a first housing and a second housing, the first housing includes a first body, two first side walls extending from two sides of the first body relatively and two second side walls connecting the two first side walls, and the fixing portions are fixed to the first side walls;

Optionally, the sword iron is flat, the casing includes first casing, first casing includes first body, certainly two first lateral walls that extend relatively in first body both sides and connect two second lateral walls of first lateral wall, the sword iron with two first lateral walls are fixed and are located between two first lateral walls.

Optionally, the housing includes: a first plate body;

a second plate body;

the motor assembly comprises an annular plate body, wherein the first plate body and the second plate body are respectively positioned on two opposite sides of the annular plate body, and the first plate body, the second plate body and the annular plate body surround to form a containing space for containing the motor assembly.

Optionally, the annular plate body includes a first side wall, a second side wall and a third side wall extend from two sides of the first side wall relatively, a fourth side wall extends from the second side wall to the third side wall, a fifth side wall extends from the third side wall to the second side wall, one of the fourth side wall and the fifth side wall is provided with a convex block, the other is provided with a notch, and the convex block is accommodated in the notch, so that the fourth side wall and the fifth side wall are fixed in a clamping manner.

grooves are formed in the second side wall and the third side wall, and the fixing portions are contained in and fixed to the grooves.

Optionally, the blade of a sword iron is flat, including being located the fixed part of the blade of a sword iron both sides, the second lateral wall with be provided with the recess on the third lateral wall, the fixed part is acceptd and is fixed in on the recess.

Optionally, the blade of a sword iron is flat, and the blade of a sword iron is fixed with the second side wall and the third side wall and is located between the second side wall and the third side wall.

Compared with the prior art, the jaw iron in the moving-iron receiver provided by the invention is accommodated and fixed on the shell, and the jaw iron and the shell form an accommodating space for accommodating the first magnet and the second magnet, so that an annular magnetic conduction loop is formed for the first magnet and the second magnet, the manufacturing cost of the jaw iron is reduced, and the manufacturing cost of the moving-iron receiver is further reduced.

Drawings

Fig. 1 is an exploded perspective view of a moving-iron telephone receiver according to an embodiment of the present invention;

fig. 2 is an exploded perspective view of a housing of the moving-iron telephone receiver according to the first embodiment;

fig. 3 is a perspective view of a motor assembly of the moving-iron receiver according to an embodiment;

fig. 4 is a perspective view of a blade iron of the moving-iron receiver according to an embodiment;

fig. 5 is a perspective cross-sectional view of the moving-iron receiver according to the first embodiment;

fig. 6 is a perspective view of a coil of the moving-iron receiver according to an embodiment;

fig. 7 is a perspective view of a reed of the moving-iron receiver provided in the first embodiment;

fig. 8 is an exploded perspective view of a housing of a moving-iron telephone receiver according to a second embodiment of the present invention;

fig. 9 is a schematic view of the moving-iron receiver according to the second embodiment, in which the annular plate is in a flat plate shape.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

moving-iron telephone receiver 100	Case 11, 21	First case 111	First body 1110
				First side wall 1111	Second side wall 1112	Grooves 1113, 2139	Through groove 1114
Second housing 112	Second body 1120	Third side wall 1121	Fourth side wall 1122
				The accommodation spaces 113 and 214	Motor assembly 12	Jaw iron 121	Base 1210
Extension 1211	Fixing portion 1212	First magnet 122	Second magnet 123
				Coil 124	Through hole 1240	Pin 125	Spring plate 126
Holding part 1260	Vibration part 1261	Connecting part 1262	Diaphragm assembly 13
				Connecting rod 14	Circuit board 15	Accommodating space 16	First plate body 211
Second plate 212	Annular plate body 213	First side wall 2131	Second side wall 2132
				Third side wall 2133	Fourth side wall 2134	Fifth side wall 2135	Bump 2136
Notch 2137	Notch 2138

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to "snap" to another element, it can snap directly to the other element, or one or more intervening elements may be present therebetween. The terms "upper", "lower", "left", "right" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example one

As shown in fig. 1, in order to provide a moving-iron telephone receiver 100 according to an embodiment of the present invention, the moving-iron telephone receiver 100 mainly includes a housing 11, a motor assembly 12, a diaphragm assembly 13, a connecting rod 14, and a circuit board 15, where the housing 11 accommodates the motor assembly 12, the diaphragm assembly 13, and the connecting rod 14, and the circuit board 15 is attached and fixed to an outer side of the housing 11.

As shown in fig. 1 and 2, the housing 11 includes a first housing 111 and a second housing 112, the first housing 111 includes a first body 1110, two first sidewalls 1111 extending from both sides of the first body 1110 toward the second housing 112, and two second sidewalls 1112 connecting the two first sidewalls 1111, a groove 1113 is recessed downward from upper surfaces of the two first sidewalls 1111, and one of the second sidewalls 1112 is provided with a through groove 1114.

The second housing 112 includes a second body 1120, two third sidewalls 1121 and two fourth sidewalls 1122, wherein the two third sidewalls 1121 and the two fourth sidewalls 1122 connect the two third sidewalls 1121, the second housing 112 and the first housing 111 are fastened to each other, that is, the first sidewall 1111 and the third sidewall 1121 are abutted against each other, and the second sidewall 1112 and the fourth sidewall 1122 are abutted against each other, so as to form an accommodating space 113 for accommodating the motor assembly 12 and the diaphragm assembly 13.

As shown in fig. 3, the motor assembly 12 includes a blade 121, a first magnet 122, a second magnet 123, a spring 126, a coil 124, and a pin 125.

As shown in fig. 3 to 5, the blade 121 includes a flat plate-shaped base portion 1210, two extending portions 1211 extending from two sides of the base portion 1210 to the second body 1120, and a fixing portion 1212 extending from each extending portion 1211 in a direction parallel to the base portion 1210 and away from the base portion 1210, the fixing portion 1212 is received in the groove 1113 and fixed to the groove 1113, the blade 121, the two first sidewalls 1111 and the first body 1110 surround to form a receiving space 16, and the blade 121, the two first sidewalls 1111 and the first body 1110 are made of an iron-nickel alloy to form a closed annular magnetic conductive loop.

The first magnet 122 and the second magnet 123 have the same structure and are both flat, the first magnet 122 is accommodated in the accommodating space 16 and fixed to the first body 1110, and the second magnet 123 is accommodated in the accommodating space 16 and fixed to the second base 1210. The first and

second magnets

122 and 123 are permanent magnets, and a constant magnetic field is formed between the first and

second magnets

122 and 123 and is strengthened by a closed loop-shaped magnetic circuit formed by the blade iron 121, the two first side walls 1111, and the first body 1110.

As shown in fig. 6, the coil 124 has a ring structure, a through hole 1240 is disposed in the middle of the coil 124, and the coil 124 is a carrier of current.

As shown in fig. 3, the two pins 125 are disposed on the coil 124 at intervals and electrically connected to the coil 124, and the coil 124 is connected to an external connection through the two pins 125. The leads 125 are elongated columnar structures made of high conductivity materials such as gold and gold alloys, silver and silver alloys, copper and copper alloys.

As shown in fig. 5 and 7, the spring plate 126 includes a flat plate-shaped holding portion 1260, a flat plate-shaped vibrating portion 1261, and an arc-shaped connecting portion 1262 connecting the holding portion 1260 and the vibrating portion 1261, the vibrating portion 1261 passes through the through hole 1240 of the coil 124 and is partially accommodated in the accommodating space 16, and the holding portion 1260 is fixed to the base 1210 in a bonded manner. The reed 126 is made of a material having a high magnetic permeability, such as an alloy material consisting of Nickel (Ni, Nickel), Niobium (Nb, Niobium), carbon (C, carbon), and iron (Fe, ferro).

The diaphragm assembly 13 is located above the holding portion 1260, the connecting rod 14 is used for connecting the vibrating portion 1261 of the spring plate 126 and the diaphragm assembly 13, and the diaphragm assembly 13 makes sound along with the reciprocating motion of the vibrating portion 1261.

The circuit board 15 is fixed to the outer side of the second sidewall 1112 provided with a through slot 1114, the circuit board 15 covers the through slot 1114 to connect with the pins 125, and the circuit board 15 is configured to receive an external instruction to control the magnitude of the current fed into the coil 124, so as to control the magnitude of the sound emitted by the moving-iron telephone receiver 100.

When the moving-iron telephone receiver 100 is assembled, the first magnet 122 is fixed on the first body 1110, and the circuit board 15 is fixed on the outer side of the second side wall 1112 provided with the through groove 1114; disposing the coil 124 on one side of the blade 121, disposing the two leads 125 on the coil 124, and then passing the vibrating portion of the reed through the through hole of the coil 124, and fixing the vibrating portion to one side of the base 1210 of the blade 121 via the fixing portion 1212, and fixing the second magnet 123 to the other side of the base 1210; connecting the diaphragm assembly 13 with the vibrating part of the reed through a connecting rod 14; passing the pins 125 of the motor assembly 12 through the through slots 1114 of the second side wall 1112, thereby enabling connection of the pins 125 to the circuit board 15; then, the fixing portion 1212 of the blade 121 is received and fixed in the recess 1113 of the first sidewall 1111; finally, the second housing 112 and the first housing 111 are fastened together, thereby completing the assembly of the moving-iron telephone receiver 100.

When no audio current flows in the coil 124, the vibrating portion 1261 of the reed 126 is in an equilibrium state in the constant magnetic field provided by the first magnet 122 and the second magnet 123; when audio alternating current flows through the coil 124, the coil 124 generates a changing lorentz force due to the changing current, the vibration part 1261 reciprocates under the driving of the lorentz force, and the connecting rod 14 drives the diaphragm assembly 13 to generate sound waves, so that the conversion from the electric signal to the sound signal is completed.

It is understood that, in some other embodiments, the groove 1113 may be disposed on the third sidewall 1121.

It is understood that, in some other embodiments, the blade 121 is shaped as a flat plate, that is, the base 1210, the extension 1211, and the fixing portion 1212 are parallel and coplanar, and the fixing portion 1212 is received and fixed in the groove 1113.

It is understood that in some other embodiments, the blade 121 is shaped as a flat plate, that is, the base 1210, the extension 1211, and the fixing portion 1212 are parallel and coplanar, the blade 121 is located between the two first sidewalls 1111, and the fixing portion 1212 is fixed to the two first sidewalls 1111, where no recess 1113 is formed on the first sidewall 1111 or the third sidewall 1121. At this time, the first side wall 1111 and the fixing portion 1212 may be fixedly connected to the first housing 111 by bonding or laser welding.

Compared with the prior art, the jaw iron 121, the two first side walls 1111 and the first body 1110 provided in the first embodiment of the present invention form a closed annular magnetic conductive loop, so that the structure is simple, the manufacturing cost of the jaw iron 121 is reduced, and the manufacturing cost of the mobile phone receiver 100 is further reduced, and the assembly efficiency of the mobile phone receiver 100 is improved because the jaw iron 121 is an open structure; and the overall height of the moving-iron telephone receiver 100 is reduced, which is beneficial to the development trend of thinning the moving-iron telephone receiver 100.

Example two

As shown in fig. 8 and 9, a housing 21 of a moving-iron receiver according to an embodiment of the present invention is provided, wherein the motor assembly 12, the diaphragm assembly 13, the connecting rod 14, and the circuit board 15 are the same as those in the first embodiment, and are not described again here.

The housing 21 includes a first plate 211, a second plate 212, and an annular plate 213, the first plate 211 and the second plate 212 are respectively located on two opposite sides of the annular plate 213, the first plate 211, the second plate 212, and the annular plate 213 form an accommodating space 214, and the motor assembly 12 and the diaphragm assembly 13 are accommodated in the accommodating space 214.

The first plate 211 is flat, and the first magnet 122 is welded to the first plate 211.

The ring-shaped plate 213 is annular and includes a first side wall 2131, a second side wall 2132, a third side wall 2133, a fourth side wall 2134 and a fifth side wall 2135, wherein the second side wall 2132 and the third side wall 2133 extend from two sides of the first side wall 2131 to each other, the fourth side wall 2134 extends from the second side wall 2132 to the third side wall 2133, and the fifth side wall 2135 extends from the third side wall 2133 to the second side wall 2132. The fourth side wall 2134 is provided with a protrusion 2136, the fifth side wall 2135 is provided with a notch 2137, and the protrusion 2136 is accommodated in the notch 2137, so that the fourth side wall 2134 and the fifth side wall 2135 are clamped and fixed.

It is understood that, in some other embodiments, the protrusion 2136 is disposed on the fifth side wall 2135, the notches 2137 are disposed on the fourth side wall 2134, and the number of the protrusion 2136 and the number of the notches 2137 are equally varied, such as two, three, four or other numbers greater than one.

It is understood that in some other embodiments, the fourth side wall 2134 and the fifth side wall 2135 may be fixed in other manners, for example, the fourth side wall 2134 and the fifth side wall 2135 may be fixed by welding.

The second side wall 2132 and the third side wall 2133 are respectively recessed with a recess 2139 from the second plate 212 towards the first plate 211, and the recess 2139 is used for accommodating the fixing portion 1212 of the blade 121.

It is understood that in some other embodiments, the recess 2139 may be eliminated when the blade 121 is flat and positioned between the second side wall 2132 and the third side wall 2133 and fixed to the second side wall 2132 and the third side wall 2133.

A notch 2138 extends from one side of the fourth side wall 2134 and the fifth side wall 2135 close to the second board body 212 to the first board body 211, and the two pins 15 extend out of the accommodating space through the notch 2138, so as to contact with the circuit board 15 located outside the accommodating space, thereby electrically connecting the coil 124 and the circuit board 15.

It can be understood that, as shown in the figure, the annular plate body 213 is firstly formed by a stamping process to form a flat-plate-shaped annular plate body prefabricated member, and then the annular plate body prefabricated member is bent four times by a bending process; finally, the fourth side wall 2134 and the fifth side wall 2135 are fixed to each other by clamping, so that the annular plate 213 is formed.

The prior art housing generally includes an upper shell and a lower shell, both of which are formed by a drawing process. In this embodiment, the first housing 21 can be formed by setting the structure of the housing 21 as the first plate 211, the second plate 212 and the annular plate 213 and by using a simple stamping process and a bending process, so that the manufacturing cost and the precision requirement of the housing 21 are reduced, and further the cost and the precision requirement of the receiver 200 are reduced.

The fourth side wall 2134 and the fifth side wall 2135 are provided with notches 2138, so that when the moving iron telephone receiver is assembled, the motor assembly 12 is directly assembled and fixed on the annular plate body 213 from the second plate body 212 to the first plate body 211, and the assembling efficiency of the moving iron telephone receiver is improved.

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. A moving-iron telephone receiver, comprising:

the motor assembly is accommodated in the shell;

wherein the motor assembly comprises:

the two ends of the jaw iron are respectively fixed on the two side walls of the shell, the jaw iron and the shell surround to form an accommodating space, and the jaw iron and the shell form a ring-shaped magnetic conductive loop;

the second magnet is accommodated in the accommodating space and fixed on the jaw iron;

the housing includes:

a first plate body;

a second plate body;

the first plate body and the second plate body are respectively positioned at two opposite sides of the annular plate body, and the first plate body, the second plate body and the annular plate body surround to form a containing space for containing the motor assembly;

wherein the annular plate body comprises a first side wall, a second side wall and a third side wall oppositely extend from two sides of the first side wall,

the jaw iron comprises a base part, extending parts oppositely extending from two sides of the base part, and fixing parts extending from the extending parts;

2. The moving-iron telephone receiver according to claim 1, wherein the annular plate further comprises a fourth sidewall extending from the second sidewall to the third sidewall, a fifth sidewall extending from the third sidewall to the second sidewall, one of the fourth sidewall and the fifth sidewall is provided with a protrusion, and the other one of the fourth sidewall and the fifth sidewall is provided with a notch, and the protrusion is received in the notch, so that the fourth sidewall and the fifth sidewall are fastened and fixed.

3. The mobile iron receiver of claim 1, wherein said blade is in the form of a flat plate.

4. The mobile phone according to claim 1, wherein the blade iron is shaped like a flat plate, and the blade iron is fixed to the second sidewall and the third sidewall and is located between the second sidewall and the third sidewall.