Receiver

Abstract

The utility model provides a receiver comprising a support assembly, the support assembly comprises a housing, an annular pole plate arranged in the housing and a PAD pin arranged at one side of the housing, and the PAD pin comprises a straight part and a vertical part fixed at one end of the straight part; the magnetic circuit assembly comprises annular magnetic steel, a middle pole plate arranged in the annular magnetic steel, middle magnetic steel arranged on the middle pole plate, a back pole plate arranged above the annular magnetic steel and a damping net arranged on the back pole plate; a voice coil and a vibrating diaphragm are sequentially arranged below the shell, one end of the voice coil extends into the position between the middle magnetic steel and the annular magnetic steel, an avoiding groove is formed in one side of the annular magnetic steel, the straight portion is arranged on the annular magnetic steel, and the vertical portion is arranged in the avoiding groove and extends in the vertical direction. The sensitivity of the receiver is improved, and the purposes of optimal performance and low cost are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of miniature receivers, and in particular relates to a receiver. Background Art

[0002] A receiver is an electroacoustic device that converts audio electrical signals into sound signals without sound leakage. It is widely used in communication terminal equipment such as mobile phones, landlines and hearing aids. Its working principle is: the changing audio electrical signal is fed into the voice coil, and the voice coil is placed in the magnetic gap of a permanent magnet magnetic circuit. The voice coil vibrates up and down due to the changing electromagnetic field force generated by the changing current, and drives the vibration membrane to drive the front and rear air to generate sound waves.

[0003] Miniature receivers are required to have small dimensions, large amplitude, high sensitivity and low cost. However, the shape and position of the PAD contact points of the prior art miniature receivers are unreasonable, resulting in a larger receiver size and failing to meet the requirements of miniature receivers. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a receiver to solve the problems in the above background technology.

[0005] The utility model provides the following technical solution, a receiver, including:

[0006] A bracket assembly, the bracket assembly comprising a shell with openings at both ends, an annular plate disposed in the shell, and a PAD pin disposed on one side of the shell, the PAD pin comprising a straight portion and a vertical portion fixed at one end of the straight portion;

[0007] A magnetic circuit assembly is arranged in the housing, and the magnetic circuit assembly includes an annular magnetic steel arranged on the annular pole plate, a middle pole plate arranged in the annular magnetic steel, a middle magnetic steel arranged on the middle pole plate, a back pole plate arranged above the annular magnetic steel, and a damping net arranged on the back pole plate;

[0008] A voice coil and a diaphragm are arranged in sequence below the shell, one end of the voice coil extends between the middle magnetic steel and the annular magnetic steel, a avoidance groove is arranged on one side of the annular magnetic steel, the straight portion is arranged on the annular magnetic steel, and the vertical portion is arranged in the avoidance groove and extends in the vertical direction.

[0009] Compared with the prior art, the beneficial effects of the present application are as follows: the present invention designs the external PAD contact point as a vertical section of the PAD pin, thereby reducing the size of the product, maximizing the size of the central magnetic steel and the annular magnetic steel, and improving the sensitivity of the receiver. At the same time, the product assembly is simple and reliable, thereby achieving the goal of optimal performance and low cost.

[0010] Preferably, a pin hole is provided on one side of the shell, and one end of the vertical portion is tilted outward and passes through the pin hole to extend out of the shell.

[0011] Preferably, the center pole plate and the center magnetic steel are arranged concentrically in a ring shape, and both the center pole plate and the center magnetic steel are arranged in the ring-shaped magnetic steel.

[0012] Preferably, a first gap is provided between the center pole plate and the annular magnetic steel, and a second gap is provided between the center magnetic steel and the annular magnetic steel.

[0013] Preferably, the voice coil passes through the first gap and extends into the second gap.

[0014] Preferably, the diaphragm and the back plate are respectively arranged at two end openings of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A stereoscopic diagram of a receiver provided by an embodiment of the utility model;

[0017] Figure 2 An exploded view of a receiver provided in an embodiment of the utility model;

[0018] Figure 3 A cross-sectional view of a receiver provided by an embodiment of the utility model;

[0019] Figure 4 A detailed diagram of a PAD pin provided in an embodiment of the utility model;

[0020] Figure 5 A structural diagram of the annular magnetic steel provided in an embodiment of the utility model.

[0021] Description of reference numerals:

[0022]

[0023] The present invention will be further described below in conjunction with the accompanying drawings and accompanying drawings. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0028] In one embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 As shown, a receiver includes a bracket assembly and a magnetic circuit assembly;

[0029] The bracket assembly includes a shell 4 with openings at both ends, an annular plate 5 disposed in the shell 4, and a PAD pin 3 disposed on one side of the shell 4, wherein the PAD pin 3 includes a straight portion and a vertical portion fixed at one end of the straight portion;

[0030] Specifically, the bracket assembly is a supporting assembly for the entire receiver, which includes a shell 4, an annular pole plate 5 and a PAD pin 3. The shell 4 is a structure with openings at both ends and is made of plastic as a whole. The annular pole plate 5 can be fixed inside the shell 4 and can be used to support the entire magnetic circuit assembly. The PAD pin 3 is disposed on one side of the shell for connecting with the outside world. In order to further reduce the overall size of the receiver, the PAD pin 3 is designed as a two-section structure, one section is a straight portion for fixing the pin, and the other section is a vertical portion for connecting with the outside world.

[0031] like Figure 3 , Figure 4 , Figure 5 As shown, the magnetic circuit assembly is arranged in the housing 4, and the magnetic circuit assembly includes an annular magnetic steel 6 arranged on the annular pole plate 5, a middle pole plate 7 arranged in the annular magnetic steel 6, a middle magnetic steel 8 arranged on the middle pole plate 7, a back pole plate 9 arranged above the annular magnetic steel 6, and a damping net 10 arranged on the back pole plate 9;

[0032] Specifically, the magnetic circuit assembly is a functional assembly of the entire receiver. The annular magnetic steel 6, the center pole plate 7, and the center magnetic steel 8 are used to form a permanent magnet magnetic circuit. The annular magnetic steel 6 can be fixed on the annular pole plate 5, and the center pole plate 7 and the center magnetic steel 8 are arranged in the cylindrical cavity formed by the annular magnetic steel 6, and the center magnetic steel 8 is connected to the back pole plate 9.

[0033] A voice coil 2 and a diaphragm 1 are sequentially arranged below the housing 4, one end of the voice coil 2 extends between the middle magnetic steel 8 and the annular magnetic steel 6, a side of the annular magnetic steel 6 is provided with an avoidance groove, the straight portion is arranged on the annular magnetic steel 6, and the vertical portion is arranged in the avoidance groove and extends in the vertical direction;

[0034] Specifically, the voice coil 2 is inserted between the middle magnetic steel 8 and the annular magnetic steel 6, so that the voice coil 2 is driven to vibrate by the changing electromagnetic field generated by the changing current, thereby driving the diaphragm 1 to vibrate and generate sound waves;

[0035] At the same time, in order to reduce the space occupied by components, an avoidance groove is set on one side of the annular magnetic steel 6, and the avoidance groove is a straight groove, similar to vertically cutting the edge of the annular magnetic steel 6 to obtain the avoidance groove, and the straight portion of the PAD pin 3 can be set on the annular magnetic steel 6, the straight portion is coordinated with the annular pole plate 5, and the vertical portion extends along the vertical direction, that is, along the thickness direction of the annular magnetic steel 6, so as to reduce the space occupied by components.

[0036] In this embodiment, a pin hole is provided on one side of the housing 4, and one end of the vertical portion is tilted outward and passes through the pin hole and extends out of the housing 4;

[0037] Specifically, one end of the vertical portion away from the flat portion is tilted outward and extends out of the housing 4 through the pin hole to facilitate external connection.

[0038] In this embodiment, the center pole plate 7 and the center magnetic steel 8 are arranged concentrically in a ring shape, and both the center pole plate 7 and the center magnetic steel 8 are arranged inside the ring-shaped magnetic steel 6 .

[0039] In this embodiment, a first gap is provided between the middle pole plate 7 and the annular magnetic steel 6 , and a second gap is provided between the middle magnetic steel 8 and the annular magnetic steel 6 .

[0040] In this embodiment, the voice coil 2 passes through the first gap and extends into the second gap.

[0041] Specifically, through the above configuration, the sensitivity of the receiver can be improved.

[0042] In this embodiment, the diaphragm 1 and the back plate 9 are respectively arranged at the openings at both ends of the housing 4;

[0043] Specifically, for the entire receiver, the damping mesh 10, back pole plate 9, middle magnetic steel 8, middle pole plate 7, annular magnetic steel 6, annular pole plate 5, voice coil 2, and diaphragm 1 are all concentrically arranged, which can reduce the difficulty of assembly and improve the performance of the receiver.

[0044] In summary, the receiver in the above embodiment of the utility model designs the external PAD contact point as the vertical section of the PAD pin 3, so as to reduce the size and space occupied by the product, maximize the size of the middle magnetic steel 8 and the annular magnetic steel 6, improve the sensitivity of the receiver, and at the same time, the product assembly is simple and reliable, thereby achieving the goal of optimal performance and low cost.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A receiver, characterized in that: include: A bracket assembly, the bracket assembly comprising a shell with openings at both ends, an annular plate disposed in the shell, and a PAD pin disposed on one side of the shell, the PAD pin comprising a straight portion and a vertical portion fixed at one end of the straight portion; A magnetic circuit assembly is arranged in the housing, and the magnetic circuit assembly includes an annular magnetic steel arranged on the annular pole plate, a middle pole plate arranged in the annular magnetic steel, a middle magnetic steel arranged on the middle pole plate, a back pole plate arranged above the annular magnetic steel, and a damping net arranged on the back pole plate; A voice coil and a diaphragm are arranged in sequence below the shell, one end of the voice coil extends between the middle magnetic steel and the annular magnetic steel, a avoidance groove is arranged on one side of the annular magnetic steel, the straight portion is arranged on the annular magnetic steel, and the vertical portion is arranged in the avoidance groove and extends in the vertical direction.

2. The receiver according to claim 1, characterized in that A pin hole is provided on one side of the shell, and one end of the vertical portion is tilted outward and passes through the pin hole and extends out of the shell.

3. The receiver according to claim 1, characterized in that The center pole plate and the center magnetic steel are arranged concentrically in a ring shape, and both the center pole plate and the center magnetic steel are arranged in the ring-shaped magnetic steel.

4. The receiver according to claim 3, characterized in that: A first gap is provided between the middle pole plate and the annular magnetic steel, and a second gap is provided between the middle magnetic steel and the annular magnetic steel.

5. The receiver according to claim 4, characterized in that: The voice coil passes through the first gap and extends into the second gap.

6. The receiver according to claim 1, characterized in that The diaphragm and the back plate are respectively arranged at the openings at both ends of the shell.

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