A receiver device

Abstract

The present invention provides a receiver device, which relates to the technical field of communication equipment. The receiver device includes: an upper cover, a shell and a receiver body; the shell includes a first accommodating space, and the first accommodating space includes a side wall and a bottom wall; the receiver body is arranged in the first accommodating space; the upper cover is snapped into the first accommodating space and is arranged at a relative position away from the bottom wall; the upper cover is provided with at least one first sound-permeable hole; the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity. The present invention adds an upper cover and a shell on the basis of the receiver body, thereby ensuring that the electroacoustic performance of the receiver meets the requirements, realizing its waterproof characteristics, improving the assembly yield of the receiver, and also improving the quality of the receiver device.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to a receiver device. Background Art

[0002] Electroacoustic devices are key components for converting acoustic and electrical signals, and they play a vital role in the conversion, processing and transmission of sound signals. Dynamic transceivers have the highest environmental adaptability and security, and are suitable for communication equipment used in harsh environments. Waterproofness is an important requirement for transceivers in this field. How to simplify the glue dispensing position and reduce the number of glue dispensing through structural design, while ensuring that the electroacoustic performance (including frequency response, sensitivity, etc.) of the receiver meets the requirements, and at the same time, ensuring the waterproofness of the receiver, while improving the assembly yield of the receiver, is a problem that needs to be solved urgently in this field. Summary of the invention

[0003] The embodiment of the present invention provides a receiver device to solve the problem that the receiver in the prior art cannot be waterproof.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a receiver device, including:

[0006] Upper cover, housing and receiver body;

[0007] The housing comprises a first accommodating space, wherein the first accommodating space comprises a side wall and a bottom wall; the receiver body is arranged in the first accommodating space;

[0008] The upper cover is clamped in the first accommodating space and is arranged at a relative position away from the bottom wall; the upper cover is provided with at least one first sound-permeable hole;

[0009] The receiver body is respectively disposed against the side wall and the bottom wall to form a first cavity.

[0010] Optionally, the receiver body includes:

[0011] Diaphragms, magnetic circuits, coils and gaskets;

[0012] The magnetic circuit includes a bracket and a magnetic column arranged in the bracket, the coil is sleeved on the magnetic column, and the bracket is respectively arranged against the side wall and the bottom wall to form the first cavity;

[0013] The diaphragm is connected to the coil and the gasket respectively; a second cavity is formed between the diaphragm and the magnetic circuit, and a third cavity is formed between the diaphragm and the upper cover;

[0014] The gasket is between the upper cover and the bracket and is disposed against the side wall.

[0015] Optionally, the bracket is provided with at least one second sound-permeable hole, and the second sound-permeable hole connects the first cavity and the second cavity.

[0016] Optionally, the bracket includes a second accommodating space, and the magnetic column is arranged in the second accommodating space;

[0017] Wherein, the bracket, the magnetic column and the coil are located on the same central axis.

[0018] Optionally, a preset gap is formed between the magnetic column and a side wall of the second accommodating space, and the coil is arranged in the preset gap.

[0019] 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, where N is greater than 10.

[0020] Optionally, the receiver device further includes: at least one terminal, which is arranged outside the shell and connected to the coil.

[0021] The beneficial effects of the present invention are:

[0022] In the above technical solution, the receiver device includes: an upper cover, a shell and a receiver body; the shell includes a first accommodating space, and the first accommodating space includes a side wall and a bottom wall; the receiver body is arranged in the first accommodating space; the upper cover is snapped into the first accommodating space and is arranged at a relative position away from the bottom wall; the upper cover is provided with at least one first sound-permeable hole; the receiver body is respectively abutted against the side wall and the bottom wall to form a first cavity. The present invention adds an upper cover and a shell on the basis of the receiver body, ensuring that the receiver body is in the first accommodating space, thereby achieving its waterproof purpose. In summary, the present invention ensures that the electroacoustic performance of the receiver meets the requirements, realizes its waterproof characteristics, improves the assembly yield of the receiver, and also improves the quality of the receiver device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram showing the structure of a receiver device provided by an embodiment of the present invention;

[0024] Figure 2 FIG. 4 is a frequency response curve of a receiver device actually measured according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 10-upper cover; 11-first sound-permeable hole; 20-shell; 21-second sound-permeable hole; 30-diaphragm; 40-magnetic circuit; 41-bracket; 42-magnetic column; 43-preset gap; 50-coil; 60-gasket; A-first cavity; B-second cavity; C-third cavity, L-center axis. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present invention. Therefore, it should be clear 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 present invention. In addition, for clarity and brevity, the description of known functions and structures is omitted.

[0028] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] In various embodiments of the present invention, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0030] The present invention aims to provide a receiver device to solve the problem that the receiver in the prior art cannot be waterproof.

[0031] like Figure 1 As shown, an optional embodiment of the present invention provides a receiver device, comprising:

[0032] Upper cover 10, housing 20 and receiver body;

[0033] The housing 20 includes a first accommodating space, the first accommodating space includes a side wall and a bottom wall; the receiver body is disposed in the first accommodating space;

[0034] The upper cover 10 is snapped into the first accommodating space and is arranged at a relative position away from the bottom wall; the upper cover 10 is provided with at least one first sound-permeable hole 11;

[0035] The receiver body is respectively disposed against the side wall and the bottom wall to form a first cavity A.

[0036] In this embodiment, the receiver body is arranged in the first accommodation space of the housing 20, and is clamped in the first accommodation space by the upper cover 10, and is arranged at a relative position away from the bottom wall, that is, the upper cover 10 seals the opening of the first accommodation space; the receiver body is respectively arranged against 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 connected to the outside world, and water cannot enter the first cavity A. Compared with the prior art, the present invention reduces the number of times the receiver device is glued. It only needs to glue once in the gap between the receiver body and the upper cover 10 to achieve the sealing of the receiver device, prevent water from entering the receiver body and the first cavity A, and achieve waterproof performance without affecting the receiver's electroacoustic performance such as frequency response and sensitivity; the present invention has a simple structure and also increases the assembly efficiency and production yield of the receiver device.

[0037] It should be noted that the shape of the first sound-permeable hole 11 can be curved, straight or broken, as long as it is connected to the outside world, so that the effect of bass enhancement can be achieved; the number of the first sound-permeable holes 11 is not limited to one, but can be two or more, which can be adjusted according to the specific requirements of the acoustic performance.

[0038] Specifically, the receiver body includes:

[0039] Diaphragm 30, magnetic circuit 40, coil 50 and gasket 60;

[0040] The magnetic circuit 40 includes a bracket 41 and a magnetic column 42 disposed in the bracket 41, the coil 50 is sleeved on the magnetic column 42, and the bracket 41 is respectively disposed against the side wall and the bottom wall to form the first cavity A;

[0041] 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;

[0042] The gasket 60 is between the upper cover 10 and the bracket 41 and is disposed against the side wall.

[0043] It should be noted that the washer 60 is made of aluminum or copper. The diameter of the diaphragm 30 can be adjusted by adjusting the width of the washer 60. The performance of the diaphragm 30 can be adjusted by adjusting the diameter and thickness of the diaphragm 30.

[0044] In this embodiment, the bracket 41 is in a "Ji" shape and is clamped (with the "Ji" shape inverted) in the first accommodation space, and is respectively abutted against the side wall and the bottom wall to form the first cavity A. The first cavity A forms a completely sealed cavity. A magnetic column 42 is arranged inside the bracket 41, the coil 50 is sleeved on the magnetic column 42, and 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. Here, due to the arrangement of the diaphragm 30, the second cavity B and the first cavity A are completely isolated from the external environment, and water will not enter 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 to realize the output of sound signals. When the third cavity C is filled with water, the water can directly flow out through the first sound transmission hole 11 without affecting the normal operation of the receiver.

[0045] 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 electrolytic iron and neodymium iron boron; the coil 50 is made of enameled copper wire, and the gasket 60 is made of aluminum. Of course, in the application process, materials that meet the functions of the above devices can be selected according to actual needs, and there is no limitation here.

[0046] Optionally, the magnetic circuit 40 is provided with at least one second sound transmission hole 21, and the second sound transmission hole 21 communicates the first cavity A and the second cavity B.

[0047] In this embodiment, the first cavity A and the second cavity B are communicated through the second sound transmission hole 21. By changing the size of the first cavity A and finely adjusting the damping of the second sound transmission hole 21, the peaks and valleys of the settable frequency band can be increased or decreased, effectively controlling the position and height of the resonance peaks and valleys of the earphone in the middle frequency to achieve better acoustic response, eliminating the labiodental sounds in the human voice section during communication voice playback, and at the same time, the improvement is simple, the cost is low, and it will not interfere with other frequency bands.

[0048] Optionally, the bracket 41 includes a second accommodation space, and the magnetic column 42 is arranged in the second accommodation space;

[0049] Among them, the bracket 41, the magnetic column 42 and the coil 50 are located on the same central axis L.

[0050] Optionally, a preset gap 43 is formed between the magnetic column 42 and the side wall of the second accommodation space, and the coil 50 is arranged in the preset gap 43.

[0051] 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, and a required gap, i.e., 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 confined between the magnetic column 42 and the side wall of the second accommodating space. The number of turns of the coil 50 is used to control the magnetic field strength of the electromagnetic field generated by the magnetic column 42.

[0052] 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, where N is greater than 10.

[0053] 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 band will be limited by the closed acoustic cavities. Therefore, the present 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 one order of magnitude larger than the volume of the second cavity B and the volume of the third cavity C, and the order of magnitude is 10 here, so that the low-frequency characteristics of the receiver device are ensured.

[0054] Optionally, the receiver device further includes: at least one terminal, which is disposed outside the housing 20 and connected to the coil 50 .

[0055] In this embodiment, when the receiver device is working, an electrical signal is input from the communication device to the terminal located on the housing 20, and the terminal is connected to the coil 50 through a wire. The current in the coil 50 is acted upon by the Ampere force in the magnetic field generated by the magnetic circuit 40, driving the diaphragm 30 to vibrate, and the 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-permeable hole 11, completing the function of receiving calls on the communication device.

[0056] It should be noted that, in the above structure, since the third cavity C is connected to the outside through the first sound-permeable hole 11, and the volumes of the second cavity B and the first cavity A are sufficiently large, the diaphragm 30 itself constitutes a resonance system, and the resonance frequency of the resonance system is designed to be between 1-2kHz by designing the thickness and diameter of the diaphragm 30, thereby achieving a high conversion rate of the receiver device to the voice band signal.

[0057] The third cavity C and the first sound-permeable hole 11 constitute a Helmholtz resonance system in acoustics. By designing the volume of the third cavity C and the thickness, diameter and number of the first sound-permeable holes 11, the resonant frequency of the Helmholtz resonance system is designed to be 4 kHz, thereby widening the frequency response range of the receiver and meeting the frequency response index requirements.

[0058] like Figure 2 As shown, Figure 2 The frequency response curve of the waterproof receiver device after assembly is actually measured by the present invention. Figure 2 The horizontal axis is the frequency, and the vertical axis is the corresponding sensitivity. Figure 2 100 and 300 in the figure are the upper frame line and the lower frame line respectively. In actual use, it is necessary to ensure that the actual sensitivity curve 200 is between 100 and 300. The sensitivity curve 200 falls into the required frequency response block diagram from 200Hz-4kHz, and the 1kHz sensitivity exceeds 110dB / mW, which has a very 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, and after the thickness of the first sound-transmitting holes 11 is reduced, the diameter of the first sound-transmitting holes 11 is increased, and the number of the first sound-transmitting holes 11 is increased, the sensitivity curve 200 will be greater than 4kHz. The sensitivity can be adjusted by designing the volume of the third cavity C.

[0059] In summary, the present invention adds an upper cover and a shell on the basis of the receiver body, ensuring that the receiver body is in the first accommodation space, achieving its waterproof purpose, and the present invention also adds a sealant to further stabilize its waterproof effect. The present invention ensures that the receiver's electroacoustic performance meets the requirements, realizes its waterproof characteristics, improves the assembly yield of the receiver, and also improves the quality of the receiver device.

[0060] The purpose of the present invention is to provide a waterproof receiver sealing cavity design for military communication terminals, which ensures that the receiver's electroacoustic performance (including frequency response, sensitivity, etc.) meets the requirements while achieving its waterproof characteristics and making it adaptable to a variety of external assembly structures.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A receiver device, characterized in that: include: Upper cover, housing and receiver body; The housing comprises a first accommodating space, wherein the first accommodating space comprises a side wall and a bottom wall; the receiver 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 away from the bottom wall; the upper cover is provided with at least one first sound-permeable hole; The receiver body is respectively disposed against the side wall and the bottom wall to form a first cavity; The receiver body comprises: a diaphragm, a magnetic circuit, a coil and a gasket; the magnetic circuit comprises a bracket and a magnetic column arranged in the bracket, the coil is sleeved on the magnetic column, the bracket is respectively arranged against the side wall and the bottom wall to form the first cavity; the diaphragm is respectively connected to the coil and the gasket; the diaphragm and the magnetic circuit form a second cavity, and the diaphragm and the upper cover form a third cavity; the gasket is between the upper cover and the bracket and is arranged against the side wall; The bracket is provided with at least one second sound-transmitting hole, and the second sound-transmitting hole communicates the first cavity and the second cavity; 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, where N is greater than 10; Wherein, the bracket includes 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 located on the same central axis; The receiver device further comprises: at least one terminal, which is arranged outside the housing and connected to the coil.

2. The receiver device according to claim 1, characterized in that A preset gap is formed between the magnetic column and the side wall of the second accommodating space, and the coil is arranged in the preset gap.

Images