CN111726715A - Telephone receiver - Google Patents

Abstract

The present invention provides a receiver, including: a housing having a hollow interior; the vibrating diaphragm mechanism is arranged in the hollow inner cavity and divides the hollow inner cavity into a first cavity and a second cavity, the vibrating diaphragm mechanism comprises a vibrating plate, the vibrating plate comprises a free end and a fixed end, and the free end of the vibrating plate is arranged in the hollow inner cavity in a hanging manner; an electromagnetic drive mechanism disposed within the hollow interior cavity comprising a coil assembly and at least one magnetic field assembly, wherein each magnetic field assembly is disposed in either the first cavity or the second cavity and the magnetic field assembly is proximate to the free end of the vibrating plate; the coil assembly is arranged in the second cavity, is close to the fixed end of the vibrating plate and serves as a support of the vibrating plate. Compared with the prior art, the invention reduces the connection between the moving parts, simplifies the assembly process and reduces the manufacturing cost.

Description

Telephone receiver

[ technical field ] A method for producing a semiconductor device

The invention belongs to the technical field of electroacoustic conversion, and particularly relates to a telephone receiver.

[ background of the invention ]

A receiver, also called a headphone, is an electroacoustic device which converts an audio electrical signal into a sound signal under the condition of no sound leakage, and is widely used in communication terminal equipment such as mobile phones, fixed phones and hearing aids to realize audio output.

Referring to fig. 1, a receiver in the prior art includes a housing 110, a diaphragm 120, and an electromagnetic driving mechanism, where the diaphragm 120 is disposed in the housing 110 and divides an inner cavity of the housing into a front cavity and a rear cavity, and the electromagnetic driving mechanism is fixed in the rear cavity. The electromagnetic driving mechanism comprises a driving rod 130, a reed (or armature) 140, two permanent magnets 150 and a coil 160, wherein one end of the reed 140 is fixed on the inner wall surface of the side wall of the shell 110, and the other end is connected with the diaphragm 120 through the driving rod 130; the coil 160 is sleeved on the reed 140 and close to the U-shaped arc transition part of the reed 140, and the two permanent magnets 150 are respectively located at the upper and lower sides of the end of the reed 140 close to the driving rod 130 and fixed on the inner wall surface of the housing 110.

Because in the receiver shown in fig. 1, the reed 140 and the diaphragm 120 need to be connected by the driving rod 130 (or the driving plate), and the magnet 150 is disposed in the annular blade iron, the assembly is very difficult by adopting such a design, the assembly efficiency is low, the automatic production is difficult to realize, the requirement on the skill of the staff is high, the manufacturing process is unstable, the control of the assembly quality can affect the reliability of the product, the rework rate is high, even the scrap is caused, and the reduction of the manufacturing cost is not facilitated.

Therefore, there is a need for an improved solution to overcome the above problems.

[ summary of the invention ]

The invention aims to provide a receiver, which reduces the connection between moving parts, thereby simplifying the assembly process and reducing the manufacturing cost.

According to one aspect of the present invention, there is provided a receiver, comprising: a housing having a hollow interior; the vibrating diaphragm mechanism is arranged in the hollow inner cavity and divides the hollow inner cavity into a first cavity and a second cavity, the vibrating diaphragm mechanism comprises a vibrating plate, the vibrating plate comprises a free end and a fixed end, and the free end of the vibrating plate is arranged in the hollow inner cavity in a hanging manner; an electromagnetic drive mechanism disposed within the hollow interior cavity comprising a coil assembly and at least one magnetic field assembly, wherein each magnetic field assembly is disposed in either the first cavity or the second cavity and the magnetic field assembly is proximate to the free end of the vibrating plate; the coil assembly is arranged in the second cavity, is close to the fixed end of the vibrating plate and serves as a support of the vibrating plate.

Further, the magnetic field assembly is used for generating a fixed magnetic field; the coil assembly generates an alternating magnetic field after being electrified; the vibrating plate is made of magnetic conductive materials, and an alternating magnetic field generated when the coil assembly is electrified is introduced into the vibrating plate.

Further, the housing further comprises a boss arranged on an inner wall surface of a side wall of the housing, and the boss is used for supporting the diaphragm mechanism.

Further, one side of the vibrating diaphragm mechanism, which is positioned at the free end of the vibrating plate, is supported by the boss; the vibrating diaphragm mechanism is positioned on one side of the fixed end of the vibrating plate and supported by the coil assembly; the periphery of the diaphragm mechanism is connected with the inner wall of the shell in a sealing mode.

Further, coil pack includes magnetic core and coil, the direction of placing of coil is perpendicular to shake the direction of placing of board, magnetic core pot head is located in the hollow hole of coil, and its other end stretches out the hollow hole support of coil shake the stiff end of board.

Further, the housing comprises a cover plate and a hollow box body with an open top, wherein the hollow box body comprises a bottom surface and a side wall; the cover plate covers the top opening of the hollow box body, the hollow box body and the cover plate are enclosed into the hollow inner cavity, the vibrating diaphragm mechanism is arranged in the hollow box body, and the vibrating diaphragm mechanism divides the hollow inner cavity into a first cavity close to the cover plate and a second cavity close to the bottom surface of the hollow box body.

Further, the electromagnetic drive mechanism includes: the electromagnetic drive mechanism includes: the first magnetic field assembly is arranged in the first cavity, and a required gap is reserved between the first magnetic field assembly and the free end of the vibrating plate; and the second magnetic field assembly is arranged in the second cavity, and a required gap is reserved between the first magnetic field assembly and the free end of the vibration plate.

Further, the required clearance is 0.05-0.2 mm.

Furthermore, the first magnetic field assembly comprises a first magnetic field generating piece for generating a fixed magnetic field, and the first magnetic field generating piece is directly arranged on the cover plate and faces the free end of the vibrating plate. The second magnetic field assembly comprises a second magnetic field generating part for generating a fixed magnetic field and a magnetic conduction block, and the magnetic conduction block is arranged on the bottom surface of the hollow box body; the second magnetic field generating part is arranged on the magnetic conduction block and faces the free end of the vibrating plate.

Furthermore, the diaphragm mechanism also comprises a fixed frame and a hinge, wherein the fixed frame is provided with an inner cavity penetrating through the thickness direction of the fixed frame; the hinge will the stiff end of shaking the board articulate in the inboard of fixed frame, the hinge sets up on fixed frame, shake be provided with respectively on the stiff end of board and the fixed frame with hinge assorted arch and recess.

Compared with the prior art, the vibrating plate is made of magnetic conductive materials, the fixed end of the vibrating plate is adjacent to the coil assembly, so that an alternating-current magnetic field generated when the coil is electrified enters the vibrating plate and acts with a direct-current magnetic field to generate driving force to push the vibrating plate to generate vibration and sound, an additional driving rod and a reed are not needed, connection among moving parts is reduced, the assembly process is simplified, and the manufacturing cost is reduced.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic structural diagram of a receiver in the prior art;

fig. 2 is a first longitudinal cross-section of a receiver according to an embodiment of the invention;

fig. 3 is a second longitudinal cross-section of the receiver in an embodiment of the invention;

fig. 4 is an exploded view of the receiver shown in fig. 2 and 3.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Unless otherwise specified, the terms connected, and connected as used herein mean electrically connected, directly or indirectly.

Please refer to fig. 2, which is a first longitudinal cross-sectional view of a receiver according to an embodiment of the present invention; fig. 3 is a schematic second longitudinal cross-sectional view of a receiver according to an embodiment of the invention.

The receiver shown in fig. 2 and 3 includes: a housing 210, a diaphragm mechanism 230, and an electromagnetic drive mechanism (not identified).

The housing 210 has a hollow interior 220. The diaphragm mechanism 230 is disposed in the hollow inner cavity 220, and divides the hollow inner cavity 220 into a first cavity 222 and a second cavity 224. The diaphragm mechanism 230 includes a vibrating plate 232, a fixed end of the vibrating plate 232 is connected to the hollow inner cavity 220, and a free end of the vibrating plate 232 is suspended in the hollow inner cavity 220.

In the particular embodiment shown in fig. 2 and 3, the housing 210 includes a cover 212 and a hollow box 214 having an open top, the hollow box 214 including a bottom surface and sidewalls; the cover plate 212 covers the top opening of the hollow box 214, and the hollow box 214 and the cover plate 212 enclose the hollow cavity 220, for example, the cover plate 212 and the hollow box 214 are fixedly connected by gluing or electric welding. In a preferred embodiment, the cover 212 and the hollow box 214 are made of magnetically conductive material.

In the embodiment shown in fig. 2 and 3, the diaphragm mechanism 230 is disposed in the hollow box 214, and the diaphragm mechanism 230 divides the hollow interior 220 into a first cavity 222 near the cover 212 and a second cavity 224 near the bottom of the hollow box 214; a plurality of bosses 216 are provided on an inner wall surface of a side wall of the hollow case 214, and the plurality of bosses 216 are used for supporting the diaphragm mechanism 230.

The electromagnetic drive mechanism is disposed within the hollow interior 220 and includes a coil assembly 242 and at least one magnetic field assembly 244, 246. Wherein the magnetic field components 244 and 246 are respectively disposed in the first cavity 222 or the second cavity 224, and the magnetic field components 244 and 246 are close to the free end 2322 of the vibrating plate 232; the coil assembly 242 is disposed in the second cavity 224, and the coil assembly 242 is close to the fixed end 2324 of the vibrating plate 232 and serves as a support for the vibrating plate 232. In the present invention, the alternating current magnetic field generated when the coil assembly 242 is energized directly acts on the vibrating plate 232 and the direct current magnetic field (i.e. the magnetic field generated by the magnetic field assemblies 244 and 246) to generate a driving force to drive the vibrating plate 232 to generate vibration and sound.

In the particular embodiment shown in fig. 2 and 3, the electromagnetic drive mechanism includes a first magnetic field component 244 disposed within the first cavity 222 and proximate to the free end 2322 of the vibrating plate 232, and a second magnetic field component 246 disposed within the second cavity 224 and proximate to the free end 2322 of the vibrating plate 232. The first magnetic field component 244 is opposite to the second magnetic field component 246, the second magnetic field component 246 is arranged side by side with the coil component 242, and the coil component 242 is closer to the fixed end 2324 of the vibrating plate 232 than the second magnetic field component 246.

In the embodiment shown in fig. 2 and 3, the coil assembly 242 includes a magnetic core 2422 and a coil 2424, the placement direction of the coil 2424 is perpendicular to the placement direction of the vibrating plate 232, one end of the magnetic core 2422 is sleeved in the hollow inner hole of the coil 2424, the other end of the magnetic core 2422 extends out of the hollow inner hole of the coil 2424 to connect and support the fixed end 2324 of the vibrating plate 232, and the first magnetic core 2422 is preferably an iron core. The first magnetic field assembly 244 includes a first magnetic field generator 2442 generating a fixed magnetic field, the first magnetic field generator 2442 is directly disposed on the cover plate 212 and faces the free end 2322 of the vibrating plate 232, and a desired gap is reserved between the first magnetic field generator 2442 and the free end 2322 of the vibrating plate 232. The second magnetic field assembly 246 comprises a second magnetic field generating member 2462 generating a fixed magnetic field and a magnetic conductive block 2464, wherein the magnetic conductive block 2464 is arranged on the bottom surface of the hollow box body 214; the second magnetic field generator 2462 is disposed on the magnetic conductive block 2464 and faces the free end of the vibrating plate 232 (or faces the first magnetic field generator 2442), and a desired gap is reserved between the second magnetic field generator 2462 and the free end 2322 of the vibrating plate 232.

In a preferred embodiment, the magnetic field generating members 2442, 2462 are permanent magnets. In one embodiment, the coil assembly 242 may include only the coil 2424, and the coil 2424 is connected to the fixed end 2324 of the vibrating plate 232 and supports the fixed end 2324 of the vibrating plate 232, so that the ac magnetic field generated when the coil 2424 is energized can enter the vibrating plate 232. In one embodiment, there may be only the first magnetic field assembly 244, or only the second magnetic field assembly 246, as long as it can provide a fixed magnetic field (or a dc magnetic field).

In the embodiment shown in fig. 2 and 3, the diaphragm mechanism 230 is supported by the boss 216 on the side of the free end 2322 of the diaphragm 232; the diaphragm mechanism 230 is positioned on the coil component 242 at one side of the fixed end 2324 of the vibrating plate 232 and supported by the coil component 242, and the periphery of the diaphragm mechanism 230 is fixedly and hermetically connected with the inner wall of the housing 210 by using an adhesive.

Referring to fig. 2 and 3, the diaphragm mechanism 230 further includes a fixing frame 234. The fixing frame 234 is connected to an inner surface of a sidewall of the hollow case 214, and has an inner cavity (not shown) penetrating through the fixing frame 234 in a thickness direction. The fixing frame 234 is made of non-magnetic material, which may be stainless steel, aluminum or other non-magnetic metal or non-metal material. The fixed end 2324 of the vibrating plate 232 is fixed on the inner side of the fixed frame 234, and the free end 2322 of the vibrating plate is suspended in the inner cavity of the fixed frame 234; a predetermined gap 236 is formed between an outer side surface of the free end 2322 of the vibrating plate 232 and an inner side surface of the fixing frame 234.

In the embodiment shown in fig. 2 and 3, the vibrating plate 232 and the fixed frame 234 are of one-piece design, and the one-turn U-shaped predetermined gap 236 is slotted in the one-piece design. In another embodiment, the diaphragm mechanism 230 further includes a hinge (not shown), and the fixed end 2324 of the vibrating plate 232 is hinged to the inner side of the fixed frame 234 through the hinge; the hinge is disposed on the fixing frame 234, and a protrusion and a groove matched with the hinge are respectively disposed on the fixing end 2324 of the vibration plate 232 and the fixing frame 234.

The principle of the electromagnetic driving mechanism shown in fig. 2 and 3 for driving the vibrating plate 232 to vibrate is as follows: when alternating current is supplied to the coil 2424, the generated alternating current magnetic field enters the vibration plate 232 through the magnetic core 2422, so that the vibration plate 232 has polarity, and under the action of the fixed magnetic field (or direct current magnetic field) generated by the magnetic field generating members 2442 and 2462, the vibration plate 232 performs reciprocating vibration in the vertical direction, so that a sound generating membrane (not marked) is driven to blow air to generate sound.

Please refer to fig. 4, which is an exploded view of the receiver shown in fig. 2 and fig. 3. Compared with fig. 1, the components in the receiver shown in fig. 4 are well-arranged, and the stacked design makes the assembly process simple and is very suitable for automatic production.

As can be seen from the above, the receiver shown in fig. 2 and 3 does not use the driving rod 130 and the reed 140, compared to the receiver shown in fig. 1. Because the vibrating plate 232 in fig. 2 and 3 is made of a magnetic conductive material, and the fixed end 2324 of the vibrating plate is connected to the coil assembly 242, the alternating-current magnetic field generated when the coil 2424 is energized generates a driving force to drive the vibrating plate 232 to generate vibration and sound through the action of the fixed magnetic field generated by the vibrating plate 232 and the magnetic field generating members 2442 and 2462. That is, the vibration plate 232 made of magnetic conductive material in the present invention has the function of spring, i.e. the vibration plate 232 and the spring are integrated into one, and no additional driving rod and spring are needed. Therefore, the telephone receiver in the invention has the following advantages or beneficial effects:

(1) the components in the telephone receiver are well-arranged, and the stacked design of the telephone receiver ensures that the assembly process is simple and is very suitable for automatic production;

(2) the connection between moving parts (such as a driving rod and a reed) is reduced, and the reliability is higher;

(3) fewer component parts and a simpler assembly process result in higher production efficiency;

(4) fewer component parts and a simpler assembly process are advantageous for cost reduction.

In the present invention, the terms "connected", "connecting", and the like mean electrical connections, and direct or indirect electrical connections unless otherwise specified.

It should be noted that those skilled in the art can make modifications to the embodiments of the present invention without departing from the scope of the appended claims. Accordingly, the scope of the appended claims is not to be limited to the specific embodiments described above.

Claims (10)

1. A receiver, comprising:

a housing having a hollow interior;

the vibrating diaphragm mechanism is arranged in the hollow inner cavity and divides the hollow inner cavity into a first cavity and a second cavity, the vibrating diaphragm mechanism comprises a vibrating plate, the vibrating plate comprises a free end and a fixed end, and the free end of the vibrating plate is arranged in the hollow inner cavity in a hanging manner;

an electromagnetic drive mechanism disposed within the hollow interior cavity comprising a coil assembly and at least one magnetic field assembly, wherein each magnetic field assembly is disposed in either the first cavity or the second cavity and the magnetic field assembly is proximate to the free end of the vibrating plate; the coil assembly is arranged in the second cavity, is close to the fixed end of the vibrating plate and serves as a support of the vibrating plate.

2. A receiver according to claim 1,

the magnetic field assembly is used for generating a fixed magnetic field;

the coil assembly generates an alternating magnetic field after being electrified;

the vibrating plate is made of magnetic conductive materials, and an alternating magnetic field generated when the coil assembly is electrified is introduced into the vibrating plate.

3. The receiver of claim 1, wherein the housing further comprises a boss disposed on an inner wall surface of the sidewall of the housing, the boss being configured to support the diaphragm mechanism.

4. A receiver according to claim 3,

the vibrating diaphragm mechanism is positioned on one side of the free end of the vibrating plate and supported by the boss;

the vibrating diaphragm mechanism is positioned on one side of the fixed end of the vibrating plate and supported by the coil assembly;

the periphery of the diaphragm mechanism is connected with the inner wall of the shell in a sealing mode.

5. A receiver according to claim 4,

the coil assembly includes a magnetic core and a coil,

the coil is placed the direction perpendicular to shake the direction of placing of board, magnetic core pot head is located in the hollow hole of coil, and its other end stretches out the hollow hole support of coil shake the stiff end of board.

6. A receiver according to claim 1,

the housing comprises a cover plate and a hollow box body with an open top,

the hollow box body comprises a bottom surface and a side wall; the cover plate covers the top opening of the hollow box body, the hollow box body and the cover plate enclose a hollow inner cavity,

the vibrating diaphragm mechanism is arranged in the hollow box body, and the vibrating diaphragm mechanism divides the hollow inner cavity into a first cavity close to the cover plate and a second cavity close to the bottom surface of the hollow box body.

7. A receiver according to claim 6, characterised in that the electromagnetic drive mechanism comprises:

the electromagnetic drive mechanism includes:

the first magnetic field assembly is arranged in the first cavity, and a required gap is reserved between the first magnetic field assembly and the free end of the vibrating plate;

and the second magnetic field assembly is arranged in the second cavity, and a required gap is reserved between the first magnetic field assembly and the free end of the vibration plate.

8. A receiver according to claim 7,

the required clearance is 0.05-0.2 mm.

9. A receiver according to claim 7,

the first magnetic field component comprises a first magnetic field generating piece for generating a fixed magnetic field, the first magnetic field generating piece is directly arranged on the cover plate and faces to the free end of the vibrating plate,

the second magnetic field assembly comprises a second magnetic field generating part for generating a fixed magnetic field and a magnetic conduction block, and the magnetic conduction block is arranged on the bottom surface of the hollow box body; the second magnetic field generating part is arranged on the magnetic conduction block and faces the free end of the vibrating plate.

10. The receiver of claim 1, wherein the diaphragm mechanism further comprises a fixing frame and a hinge,

the fixing frame is provided with an inner cavity penetrating through the thickness direction of the fixing frame;

the hinge will the stiff end of shaking the board articulate in the inboard of fixed frame, the hinge sets up on fixed frame, shake be provided with respectively on the stiff end of board and the fixed frame with hinge assorted arch and recess.

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