CN210694351U - Vibrating diaphragm and telephone receiver adopting same - Google Patents
Vibrating diaphragm and telephone receiver adopting same Download PDFInfo
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- CN210694351U CN210694351U CN201921501717.9U CN201921501717U CN210694351U CN 210694351 U CN210694351 U CN 210694351U CN 201921501717 U CN201921501717 U CN 201921501717U CN 210694351 U CN210694351 U CN 210694351U
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Abstract
The utility model provides a vibrating diaphragm and adopt receiver of this vibrating diaphragm, the vibrating diaphragm includes: a fixed frame having an inner cavity penetrating the fixed frame in a thickness direction; the hinge end of the vibrating plate is connected with the fixed frame, and the vibrating end of the vibrating plate is suspended in the fixed frame; a first sheet region formed at a hinge end of the vibrating plate, the first sheet region having a thickness smaller than a thickness of other regions of the hinge end except for the first sheet region. Compared with the prior art, the utility model discloses the board that shakes to in the vibrating diaphragm adopts the part to thin the processing to can satisfy the requirement of mode and stiffness, promote the performance of receiver.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the electroacoustic conversion, in particular to vibrating diaphragm design and adopt balanced armature receiver of formula of driving directly of this vibrating diaphragm.
[ 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.
Fig. 1 is a schematic structural diagram of a diaphragm 100 of a conventional direct-drive balanced armature receiver in an embodiment; fig. 2 is an exploded view of the diaphragm shown in fig. 1. The diaphragm shown in fig. 1 and 2 is composed of three parts, namely a fixed frame 110, a vibrating plate 120 and a membrane 130, wherein the vibrating plate 120 has both functions of magnetic conduction and air blowing as a vibrating part. At present, the vibrating plate mostly adopts a flat plate type design as shown in fig. 1, and the flat plate type vibrating plate design cannot meet the requirements of mode and stiffness at the same time, which brings great limitation to the performance of a receiver.
Therefore, there is a need for an improved solution to overcome the above problems.
[ Utility model ] content
An object of the utility model is to provide a vibrating diaphragm and adopt balanced armature receiver of formula of driving directly of this vibrating diaphragm, its requirement that can satisfy mode and stiffness promotes the performance of receiver.
According to an aspect of the utility model, the utility model provides a vibrating diaphragm, it includes: a fixed frame having an inner cavity penetrating the fixed frame in a thickness direction; the hinge end of the vibrating plate is connected with the fixed frame, and the vibrating end of the vibrating plate is suspended in the fixed frame; a first sheet region formed at a hinge end of the vibrating plate, the first sheet region having a thickness smaller than a thickness of other regions of the hinge end except for the first sheet region.
Further, the diaphragm further includes: a second thin plate region formed at a vibration end of the vibration plate, the second thin plate region having a thickness smaller than that of other regions of the vibration end except for the second thin plate region.
Further, the second thin sheet region is arranged in a magnet covering region of the vibrating end of the vibrating plate, and the magnet covering region is a region corresponding to a magnet in the arranged electromagnetic driving mechanism on the vibrating plate.
Further, the first sheet region is formed by thinning the hinge end from the first surface of the hinge end on one side; the second sheet region is formed by one-sided thinning of the vibrating end from the first surface of the vibrating end.
Further, the first sheet region is formed by thinning the hinge end from the first surface of the hinge end on one side; the second sheet region is formed by one-sided thinning of the vibrating end from the second surface of the vibrating end.
Further, the first sheet region is formed by thinning the hinge end from the second surface of the hinge end on one side; the second sheet region is formed by one-sided thinning of the vibrating end from the first surface of the vibrating end.
Further, the first sheet region is formed by thinning the hinge end from the first surface and the second surface of the hinge end on both sides; the second sheet region is formed by thinning the vibrating end from both sides of the first surface and the second surface of the vibrating end.
Further, the first surface of the hinge end and the first surface of the vibrating end belong to the first surface of the vibrating plate; the second surface of the hinge end and the second surface of the vibration end belong to the second surface of the vibration plate.
Further, the frequency response curve of the receiver is adjusted by adjusting the thinning size of the first thin sheet area and the second thin sheet area; the fixing frame is made of a non-magnetic conductive material, and the vibrating plate is made of a magnetic conductive material.
According to the utility model discloses a further aspect, the utility model provides a receiver, it includes: a housing having a hollow interior; the vibrating diaphragm is arranged in the hollow inner cavity and divides the hollow inner cavity into a first cavity and a second cavity, and the fixing frame is fixed on the inner wall of the shell; the electromagnetic driving mechanism is arranged in the hollow inner cavity and comprises at least one magnet and at least one coil, the magnet is used for generating a fixed magnetic field, and the coil generates the alternating magnetic field after being electrified. The diaphragm includes: a fixed frame having an inner cavity penetrating the fixed frame in a thickness direction; the hinge end of the vibrating plate is connected with the fixed frame, and the vibrating end of the vibrating plate is suspended in the fixed frame; a first sheet region formed at a hinge end of the vibrating plate, the first sheet region having a thickness smaller than a thickness of other regions of the hinge end except for the first sheet region.
Compared with the prior art, the utility model discloses the board that shakes to in the vibrating diaphragm adopts the part to thin the processing to can satisfy the requirement of mode and stiffness, promote the performance of receiver.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required 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 that other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is a schematic structural diagram of a diaphragm of a conventional direct-drive balanced armature receiver in an embodiment;
FIG. 2 is an exploded view of the diaphragm of FIG. 1;
fig. 3 is a schematic cross-sectional view of a diaphragm of a receiver according to a first embodiment of the present invention;
FIG. 4 is an exploded view of the diaphragm shown in FIG. 3;
fig. 5 is a schematic structural view of a vibrating plate according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of a vibration plate according to a third embodiment of the present invention;
fig. 7 is a schematic structural view of a vibrating plate according to a fourth embodiment of the present invention.
[ detailed description ] embodiments
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. 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.
Fig. 3 is a schematic cross-sectional view of a diaphragm of a receiver according to a first embodiment of the present invention. Fig. 4 is an exploded view of the diaphragm shown in fig. 3. The diaphragm of the receiver shown in fig. 3 and 4 includes a fixing frame 210, a vibrating plate 220, and a membrane 230. Adopt the utility model discloses a vibrating diaphragm is usually earlier in the manufacturing process fixed frame 210 and the board 220 equipment of shaking together, then assembles membrane 230 and shaping runway.
The fixing frame 210 is made of a non-magnetic material, preferably stainless steel, or an aluminum alloy, a copper alloy or other metal materials, or non-metal materials such as ceramic and carbon fiber. In the embodiment shown in fig. 3-4, the fixed frame 210 has an inner cavity 212 extending through the thickness of the fixed frame 210.
The vibrating plate 220 is made of a magnetic conductive material and has functions of magnetic conduction and air blowing, and specifically, the vibrating plate 220 is driven by an electromagnetic driving mechanism to vibrate in a reciprocating manner in a direction perpendicular to the vibrating plate 220, so as to drive the membrane 230 to blow air to sound. In the embodiment shown in fig. 3 to 4, the hinge end 222 of the vibration plate 220 is connected to the inner side of the fixed frame 210, the vibration end 224 thereof is suspended in the inner cavity 212 of the fixed frame 210, and a predetermined gap 250 is reserved between the outer side surface of the vibration end 224 of the vibration plate 220 and the inner side surface of the fixed frame 210 for forming a runway. In one embodiment, the vibrating plate 220 may be made of a high permeability magnetic material. In the embodiment shown in fig. 3-4, the vibrating plate 220 has a vibrating end (or vibrating region) 224 in addition to a hinge end (or hinge region) 222 connected to the fixed frame 210.
In order to obtain higher resonant frequency, the utility model discloses a design of the board that shakes that thickness is thicker, nevertheless shake the increase of board 220 thickness and let stiffness also sharply rise, cause the cisoid to sharply decline, to a great extent has reduced output. In order to obtain sufficient compliance, the present invention employs a thinning process at the hinge end (or hinge) 222 of the vibrating plate 220 to form a first sheet area 2222, wherein the thickness of the first sheet area 2222 is smaller than the thickness of the other areas of the hinge end 222 except for the first sheet area 2222. Thinning the link ends 222 improves compliance and also reduces the resonant frequency. In order to obtain the required resonant frequency after the hinge end 222 is thinned, the vibrating end (or moving end) 224 of the vibrating plate 220 is thinned to form a second thin plate area 2242, the thickness of the second thin plate area 2242 is smaller than the thickness of the other areas of the vibrating end 224 except the second thin plate area 2242, and the thinning of the thickness of the vibrating end 224 hardly affects the stiffness but reduces the moving mass, thereby increasing the resonant frequency and improving the high frequency response. Therefore, in the diaphragm design of the present invention, different requirements of mode and stiffness can be satisfied simultaneously by adjusting the thinning thickness of the first sheet region 2222 of the hinge end 222 and the second sheet region 2242 of the vibration end 224, so as to obtain different frequency response curves.
In one embodiment, the second sheet region 2242 is disposed in a magnet covering region of the vibrating end 224 of the vibrating plate 220, wherein the magnet covering region is a region corresponding to a magnet (not shown) of an electromagnetic driving mechanism disposed on the vibrating plate 220 (or a projection of the magnet on the vibrating plate 220).
In the first embodiment shown in fig. 3-4, the first sheet area 2222 is one-sided thinned from the first surface 226 of the link end 222 (or the first surface of the vibratory plate 220) to the link end 222; the second sheet region 2242 is formed by thinning the vibration end 224 from the first surface 226 of the vibration end 224 (or the first surface of the vibration plate 220).
Please refer to fig. 5, which is a schematic structural diagram of a vibrating plate according to a second embodiment of the present invention. In the embodiment shown in fig. 5, the first tab region 5222 is one-sided thinned from the first surface 526 of the link end 522 (or the first surface of the vibratory plate); the second sheet region 5242 is formed by one-side thinning of the vibrating end 524 from the second surface 528 of the vibrating end 524 (or the second surface of the vibrating plate).
Please refer to fig. 6, which is a schematic structural diagram of a vibrating plate according to a third embodiment of the present invention. In the embodiment shown in FIG. 6, the first web region 6222 is one-sided thinned from the second surface 628 of the link end 622 (or the second surface of the vibratory plate) to the link end 522; the second tab region 6242 is formed by one-sided thinning of the vibrating end 624 from the first surface 626 of the vibrating end 624 (or the first surface of the vibrating plate).
Please refer to fig. 7, which is a schematic structural diagram of a vibrating plate according to a fourth embodiment of the present invention. In the embodiment shown in FIG. 7, a first sheet region 7222 is double-sided thinned from a first surface 726 and a second surface 728 (or the second surface of the vibratory plate) of the link end 722; the second sheet region 7242 is formed by double-sided thinning of the vibrating end 724 from the first surface 726 and the second surface 728 of the vibrating end 724.
As shown in fig. 4-7, the first thin sheet region and the second thin sheet region of the vibration plate of the present invention can be thinned at the same side of the vibration plate, at different sides of the vibration plate, or at both sides of the vibration plate.
With continued reference to fig. 3 to 4, after the fixing frame 210 and the vibrating plate 220 are assembled together, the film 230 is attached to one side surface of the fixing frame 210 and the vibrating plate 220 and seals at least the predetermined gap 250 formed between the vibrating plate 220 and the fixing frame 210. In one embodiment, the film 230 may be made of a high elastic tensile and high ductility plastic material, such as PU (Polyurethane) film.
In one embodiment, the vibrating plate 220 and the fixing frame 210 are provided with a protrusion and a groove for positioning, respectively. In the embodiment shown in fig. 3-4, the protrusion 229 on the vibrating plate 220 is provided at the hinge end 222, the inner side of the fixing frame 210 is provided with the groove 219 matching with the protrusion 229, and the vibrating plate 220 is combined (or connected) with the fixing frame 210 at the hinge end 222 by welding or adhesive. The projection 229 and the groove 219 are designed to perform a self-positioning function when the vibrating plate 220 and the fixing frame 210 are assembled, thereby simplifying an assembling process and improving assembling accuracy.
According to another aspect of the present invention, the present invention provides a receiver (not shown), which includes: a housing having a hollow interior; the vibrating diaphragm as described in the foregoing paragraphs of the present invention is disposed in the hollow inner cavity, and divides the hollow inner cavity into a first cavity and a second cavity, wherein the fixing frame is fixed on the inner wall of the housing; the electromagnetic driving mechanism is arranged in the hollow inner cavity and comprises at least one magnet and at least one coil, the magnet is used for generating a fixed magnetic field, and the coil generates the alternating magnetic field after being electrified. Since the basic operation principle of the receiver is well known to those skilled in the art, it is not described herein in detail.
To sum up, the present invention adopts the design of the vibrating plate with thicker thickness, and the hinge end 222 of the vibrating plate 220 is thinned to form the first thin section area 2222, so that the resonance frequency is reduced while the smoothness is improved after the hinge end 222 is thinned; a thinning process is also applied to the vibrating end (or moving end) 224 of the vibrating plate 220 to form the second sheet region 2242, thereby raising the resonance frequency and improving the high frequency response. By adjusting the thinning thickness of the first sheet region 2222 and the second sheet region 2242, different requirements of mode and stiffness can be met simultaneously, so that different frequency response curves can be obtained, and the performance of the receiver can be improved.
In the present invention, the terms "connected", "connecting", and the like denote electrical connections, and, unless otherwise specified, may denote direct or indirect electrical connections.
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 claims of the present invention. Accordingly, the scope of the claims of the present invention is not to be limited to the specific embodiments described above.
Claims (10)
1. A diaphragm, comprising:
a fixed frame having an inner cavity penetrating the fixed frame in a thickness direction;
the hinge end of the vibrating plate is connected with the fixed frame, and the vibrating end of the vibrating plate is suspended in the fixed frame;
a first sheet region formed at a hinge end of the vibrating plate, the first sheet region having a thickness smaller than a thickness of other regions of the hinge end except for the first sheet region.
2. The diaphragm of claim 1, further comprising:
a second thin plate region formed at a vibration end of the vibration plate, the second thin plate region having a thickness smaller than that of other regions of the vibration end except for the second thin plate region.
3. The diaphragm of claim 2 wherein,
the second thin sheet area is arranged in a magnet covering area of the vibration end of the vibration plate,
the magnet coverage area is an area corresponding to the magnet in the arranged electromagnetic driving mechanism on the vibrating plate.
4. The diaphragm of claim 2 wherein,
the first sheet region is formed by thinning the hinge end from the first surface of the hinge end on one side;
the second sheet region is formed by one-sided thinning of the vibrating end from the first surface of the vibrating end.
5. The diaphragm of claim 2 wherein,
the first sheet region is formed by thinning the hinge end from the first surface of the hinge end on one side;
the second sheet region is formed by one-sided thinning of the vibrating end from the second surface of the vibrating end.
6. The diaphragm of claim 2 wherein,
the first sheet region is formed by thinning the hinge end from the second surface of the hinge end on one side;
the second sheet region is formed by one-sided thinning of the vibrating end from the first surface of the vibrating end.
7. The diaphragm of claim 2 wherein,
the first sheet region is formed by thinning the hinge end from the first surface and the second surface of the hinge end on both sides;
the second sheet region is formed by thinning the vibrating end from both sides of the first surface and the second surface of the vibrating end.
8. The diaphragm of any one of claims 4 to 7,
the first surface of the hinge end and the first surface of the vibrating end belong to the first surface of the vibrating plate;
the second surface of the hinge end and the second surface of the vibration end belong to the second surface of the vibration plate.
9. The diaphragm of claim 2 wherein,
adjusting the frequency response curve of the receiver by adjusting the thinning size of the first thin sheet area and the second thin sheet area;
the fixing frame is made of a non-magnetic conductive material, and the vibrating plate is made of a magnetic conductive material.
10. A receiver, comprising:
a housing having a hollow interior;
the diaphragm of claims 1-9, disposed in the hollow inner cavity to divide the hollow inner cavity into a first cavity and a second cavity, wherein the fixing frame is fixed to an inner wall of the housing;
the electromagnetic driving mechanism is arranged in the hollow inner cavity and comprises at least one magnet and at least one coil, the magnet is used for generating a fixed magnetic field, and the coil generates the alternating magnetic field after being electrified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501717.9U CN210694351U (en) | 2019-09-10 | 2019-09-10 | Vibrating diaphragm and telephone receiver adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501717.9U CN210694351U (en) | 2019-09-10 | 2019-09-10 | Vibrating diaphragm and telephone receiver adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210694351U true CN210694351U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921501717.9U Active CN210694351U (en) | 2019-09-10 | 2019-09-10 | Vibrating diaphragm and telephone receiver adopting same |
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| Country | Link |
|---|---|
| CN (1) | CN210694351U (en) |
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2019
- 2019-09-10 CN CN201921501717.9U patent/CN210694351U/en active Active
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