CN116193341A

CN116193341A - Telephone receiver device

Info

Publication number: CN116193341A
Application number: CN202111432658.6A
Authority: CN
Inventors: 张鸿翔; 周斌; 于兆鹏; 于勃; 周斐
Original assignee: Beijing Sanxi Electronic Technology Co ltd
Current assignee: Beijing Sanxi Electronic Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-05-30

Abstract

The invention provides a receiver device, and relates to the technical field of communication equipment. The receiver device includes: the upper cover, the shell and the receiver main body; the shell comprises a first accommodating space, wherein the first accommodating space comprises a side wall and a bottom wall; the receiver main body is arranged in the first accommodating space; the upper cover is clamped in the first accommodating space and is arranged at a relative position far away from the bottom wall; the upper cover is provided with at least one first sound-transmitting hole; the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity. According to the invention, the upper cover and the shell are added on the basis of the receiver body, so that the electroacoustic performance of the receiver meets the requirements, the waterproof property of the receiver is realized, the assembly yield of the receiver is improved, and the quality of the receiver device is also improved.

Description

Telephone receiver device

Technical Field

The invention relates to the technical field of communication equipment, in particular to a receiver device.

Background

Electroacoustic devices are key components for converting acoustic signals and electric signals, and have a critical role in the conversion, processing and transmission of acoustic signals. The moving coil type transmitter-receiver has the highest environmental adaptability and guarantee, and is suitable for communication equipment used in severe environments. Waterproof is an important requirement in this field for a handset. How to simplify the dispensing position and reduce the dispensing times through structural design, ensure that the electroacoustic performance (including frequency response, sensitivity and the like) of the telephone receiver meets the requirements, ensure the waterproofness of the telephone receiver, and simultaneously improve the assembly yield of the telephone receiver, thus being a problem to be solved in the art.

Disclosure of Invention

The embodiment of the invention provides a telephone receiver device, which aims to solve the problem that the telephone receiver in the prior art cannot realize water resistance.

In order to solve the technical problems, the invention adopts the following technical scheme:

an embodiment of the present invention provides a receiver apparatus including:

the upper cover, the shell and the receiver main body;

the shell comprises a first accommodating space, wherein the first accommodating space comprises a side wall and a bottom wall; the receiver main body is arranged in the first accommodating space;

the upper cover is clamped in the first accommodating space and is arranged at a relative position far away from the bottom wall; the upper cover is provided with at least one first sound-transmitting hole;

the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity.

Optionally, the receiver body includes:

vibrating diaphragm, magnetic circuit, coil and gasket;

the magnetic circuit comprises a bracket and a magnetic column arranged in the bracket, the coil is sleeved on the magnetic column, and the bracket is respectively abutted against the side wall and the bottom wall to form the first cavity;

the vibrating diaphragm is respectively connected with the coil and the gasket; a second cavity is formed between the vibrating diaphragm and the magnetic circuit, and a third cavity is formed between the vibrating diaphragm and the upper cover;

the gasket is between the upper cover and the bracket and is disposed against the sidewall.

Optionally, the support is provided with at least one second sound-transmitting hole, and the second sound-transmitting hole communicates the first cavity and the second cavity.

Optionally, the bracket comprises a second accommodating space, and the magnetic column is arranged in the second accommodating space;

wherein the bracket, the magnetic column and the coil are positioned on the same central shaft.

Optionally, a preset gap is formed between the magnetic column and the side wall of the second accommodating space, and the coil is disposed in the preset gap.

Optionally, the volume of the first cavity is N times the sum of the volume of the second cavity and the volume of the third cavity, wherein N is greater than 10.

Optionally, the receiver device further comprises: and the binding post is arranged outside the shell and is connected with the coil.

The beneficial effects of the invention are as follows:

in the above technical solution, the receiver device includes: the upper cover, the shell and the receiver main body; the shell comprises a first accommodating space, wherein the first accommodating space comprises a side wall and a bottom wall; the receiver main body is arranged in the first accommodating space; the upper cover is clamped in the first accommodating space and is arranged at a relative position far away from the bottom wall; the upper cover is provided with at least one first sound-transmitting hole; the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity. According to the invention, the upper cover and the shell are added on the basis of the receiver body, so that the receiver body is ensured to be positioned in the first accommodating space, and the waterproof purpose of the receiver body is realized. In summary, the invention can ensure the electroacoustic performance of the receiver to meet the requirements, realize the waterproof property, improve the assembly yield of the receiver and improve the quality of the receiver device.

Drawings

Fig. 1 shows a schematic structure of a receiver device according to an embodiment of the present invention;

fig. 2 shows a frequency response curve of an actually measured receiver device provided by an embodiment of the invention.

Reference numerals illustrate:

10-an upper cover; 11-a first sound-transmitting aperture; 20-a housing; 21-a second sound-transmitting aperture; 30-vibrating diaphragm; 40-magnetic circuit; 41-a bracket; 42-magnetic columns; 43-preset gap; 50-coils; 60-washers; a-a first cavity; b-a second cavity; c-third cavity, L-center axis.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

The invention provides a telephone receiver device, which aims at the problem that the telephone receiver in the prior art cannot realize waterproof.

As shown in fig. 1, an alternative embodiment of the present invention provides a receiver apparatus comprising:

an upper cover 10, a case 20, and a receiver main body;

the housing 20 includes a first accommodating space including a sidewall and a bottom wall; the receiver main body is arranged in the first accommodating space;

the upper cover 10 is clamped in the first accommodating space and is arranged at a relative position far away from the bottom wall; the upper cover 10 is provided with at least one first sound-transmitting hole 11;

the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity A.

In this embodiment, the receiver main body is disposed in the first accommodating space of the housing 20, and is clamped in the first accommodating space by the upper cover 10, and is disposed at a relative position away from the bottom wall, that is, the upper cover 10 seals the opening of the first accommodating space; the receiver main body is respectively abutted to the side wall and the bottom wall to form a first cavity A, and the first cavity A is a sealed cavity. Here, the first cavity a is not communicated with the outside, and water cannot enter the first cavity a, compared with the prior art, the invention reduces the dispensing times of the receiver device, can realize the sealing of the receiver device only by dispensing glue once in the gap between the receiver main body and the upper cover 10, prevents water from entering the receiver main body and the first cavity a, and realizes the waterproof performance while not affecting the electroacoustic performance such as the receiver frequency response, the sensitivity and the like; the invention has simple structure and also increases the assembly efficiency and the production yield of the telephone receiver device.

The shape of the first sound-transmitting hole 11 may be curved, or may be straight or folded, so long as the first sound-transmitting hole is communicated with the outside, thereby realizing the effect of enhancing bass sounds; the number of the first sound-transmitting holes 11 is not limited to one, and may be two or more, and may be adjusted according to specific requirements of acoustic performance.

Specifically, the receiver main body includes:

diaphragm 30, magnetic circuit 40, coil 50, and washer 60;

the magnetic circuit 40 comprises a bracket 41 and a magnetic column 42 arranged in the bracket 41, the coil 50 is sleeved on the magnetic column 42, and the bracket 41 is respectively abutted against the side wall and the bottom wall to form the first cavity A;

the diaphragm 30 is connected to the coil 50 and the gasket 60, respectively; a second cavity B is formed between the diaphragm 30 and the magnetic circuit 40, and a third cavity C is formed between the diaphragm 30 and the upper cover 10;

the gasket 60 is disposed between the upper cover 10 and the bracket 41 and against the side wall.

The gasket 60 is made of aluminum or copper. The diameter of the diaphragm 30 can be adjusted by the width of the gasket 60. The performance of the diaphragm 30 can be adjusted by adjusting the diameter and thickness of the diaphragm 30.

In this embodiment, the bracket 41 is shaped like a Chinese character 'ji', and is clamped in the first accommodating space and is respectively abutted against the side wall and the bottom wall to form the first cavity a, and the first cavity a forms a cavity which is sealed completely; a magnetic column 42 is arranged in the bracket 41, the coil 50 is sleeved on the magnetic column 42, a second cavity B is formed between the vibrating diaphragm 30 and the magnetic circuit 40, and a third cavity C is formed between the vibrating diaphragm 30 and the upper cover 10; here, since the diaphragm 30 is disposed, the second cavity B and the first cavity a are completely isolated from the external environment, and no water enters the second cavity B and the first cavity a; the third cavity C is communicated with the outside through the first sound transmission hole 11, so that sound signals are output, and after the third cavity C is filled with water, water can directly flow out through the first sound transmission hole 11, so that normal operation of the receiver is not affected.

Preferably, the upper cover 10 and the housing 20 are made of plastic, the diaphragm 30 is made of polyester material, and the magnetic circuit 40 is composed of electrical pure iron and neodymium iron boron; the coil 50 is made of enameled copper wire and the washer 60 is made of aluminum. Of course, in the application process, materials meeting the functions of the device can be selected according to actual requirements, which is not limited herein.

Optionally, the magnetic circuit 40 is provided with at least one second sound-transmitting hole 21, and the second sound-transmitting hole 21 communicates with the first cavity a and the second cavity B.

In this embodiment, the first cavity a and the second cavity B are communicated through the second sound-transmitting hole 21, and by changing the size of the first cavity a and fine tuning the damping of the second sound-transmitting hole 21, the settable frequency band is increased or decreased, so that the position and the height of the formants and valleys of the earphone at the intermediate frequency are effectively controlled to achieve better acoustic response, lip and tooth sounds of a human voice section during communication voice playing are eliminated, and meanwhile improvement is simple, cost is low, and other frequency bands are not interfered.

Optionally, the bracket 41 includes a second accommodating space, and the magnetic pillar 42 is disposed in the second accommodating space;

wherein the bracket 41, the magnetic pole 42 and the coil 50 are located on the same central axis L.

Optionally, a preset gap 43 is formed between the magnetic pillar 42 and a side wall of the second accommodating space, and the coil 50 is disposed in the preset gap 43.

Here, the bracket 41, the magnetic column 42 and the coil 50 are located on the same central axis L, the magnetic column 42 is parallel to the side wall of the second accommodating space, a required gap, that is, a preset gap 43, is reserved between the magnetic column 42 and the side wall of the second accommodating space, the coil 50 is sleeved on the magnetic column 42 and is limited between the magnetic column 42 and the side wall of the second accommodating space, and the number of turns of the coil 50 is used for controlling the magnetic field intensity of the electromagnetic field generated by the magnetic column 42.

Optionally, the volume of the first cavity a is N times the sum of the volume of the second cavity B and the volume of the third cavity C, wherein N is greater than 10.

In this embodiment, the first cavity a and the second cavity B are closed acoustic cavities, and the frequency response of the receiver device in the low frequency range is limited by the closed acoustic cavities, so that the invention reduces this effect by increasing the volume of the first cavity a as much as possible. In this embodiment the volume of the first cavity a is an order of magnitude larger than the volume of the second cavity B and the volume of the third cavity C, here said order of magnitude being 10, whereby the low frequency characteristics of the receiver device will be ensured.

Optionally, the receiver device further comprises: at least one terminal, the terminal is set up in the outside of the said body 20, and connect with said coil 50.

In this embodiment, in operation of the receiver device, an electrical signal is input from a communication device to the terminal on the housing 20, which terminal is connected to the coil 50 by a wire. The current in the coil 50 is acted by ampere force in the magnetic field generated by the magnetic circuit 40 to drive the vibrating diaphragm 30 to vibrate, the vibrating diaphragm 30 drives the second cavity B and the third cavity C to generate sound, and the sound is transmitted out of the receiver 11 through the first sound transmission hole 11, so as to complete the receiving function of the communication equipment.

In the above-mentioned structure, since the third cavity C is communicated with the outside through the first sound-transmitting hole 11, and the volumes of the second cavity B and the first cavity a are sufficiently large, the diaphragm 30 itself forms a resonance system, and the thickness and the diameter of the diaphragm 30 are designed to design the resonance frequency of the resonance system to be between 1kHz and 2kHz, so that the high conversion rate of the receiver device to voice frequency signals is achieved.

The third cavity C and the first sound-transmitting holes 11 form a Helmholtz resonance system in acoustics, and the resonance frequency of the Helmholtz resonance system is designed at 4kHz by designing the volume of the third cavity C and the thickness, diameter and number of the first sound-transmitting holes 11, so that the frequency response range of the receiver is widened, and the frequency response index requirement is further met.

Fig. 2 shows the frequency response curve of the actually assembled waterproof telephone receiver device according to the present invention, wherein the abscissa in fig. 2 shows the frequency and the ordinate shows the corresponding sensitivity. 100 and 300 in fig. 2 are the upper and lower wire, respectively, to ensure that the actual sensitivity curve 200 is between 100 and 300 during actual use. The sensitivity curve 200 falls within the required frequency response block diagram from 200Hz-4kHz, and the sensitivity of 1kHz exceeds 110dB/mW, so that the high-frequency-response block diagram has high transduction efficiency. For example, when the thickness, diameter and number of the first sound-transmitting holes 11 are at preset values, the sensitivity curve 200 is at 4KHz, the thickness of the first sound-transmitting holes 11 is adjusted to be reduced, the diameter of the first sound-transmitting holes 11 is adjusted to be increased, and after the number of the first sound-transmitting holes 11 is adjusted to be increased, the sensitivity curve 200 is greater than 4KHz. The sensitivity can be adjusted by designing the volume of the third cavity C.

In summary, the upper cover and the shell are added on the basis of the receiver body, so that the receiver body is ensured to be positioned in the first accommodating space, the waterproof purpose of the receiver body is realized, and the waterproof effect of the receiver body is further stabilized by adding the sealant. The invention can realize the waterproof property and improve the assembly yield of the telephone receiver and the quality of the telephone receiver device while ensuring the electroacoustic performance of the telephone receiver to meet the requirements.

The invention aims to provide a waterproof type telephone receiver sealing cavity design for a military communication terminal, which can realize the waterproof characteristic of a telephone receiver while ensuring the electroacoustic performance (including frequency response, sensitivity and the like) of the telephone receiver to meet the requirements, and can adapt to various external assembly structures.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.

Claims

1. A receiver apparatus, comprising:

the upper cover, the shell and the receiver main body;

2. A receiver device according to claim 1, characterized in that the receiver body comprises:

vibrating diaphragm, magnetic circuit, coil and gasket;

3. A receiver arrangement as claimed in claim 2, characterized in that the holder is provided with at least one second sound-transmitting aperture, which second sound-transmitting aperture communicates the first and second cavities.

4. A receiver device as claimed in claim 3, wherein the cradle comprises a second receiving space, the magnetic post being disposed within the second receiving space;

5. The receiver device of claim 4, wherein a predetermined gap is formed between the magnetic pillar and a side wall of the second accommodation space, and the coil is disposed in the predetermined gap.

6. A receiver arrangement as claimed in claim 2, characterized in that the volume of the first cavity is N times the sum of the volume of the second cavity and the volume of the third cavity, wherein N is larger than 10.

7. The receiver device of claim 2, further comprising: and the binding post is arranged outside the shell and is connected with the coil.