TWM495049U - Back gate type large diaphragm microphone - Google Patents

Description

Back-pole large diaphragm microphone

This creation is about a microphone field technology, especially a back-pole large diaphragm microphone.

Press, electret microphone (electret microphone), also known as electret microphone, is a new type of microphone, consisting of two parts: acoustic and electrical conversion and impedance transformation. In view of its small size, simple structure, good electroacoustic performance and low price, the application of electret microphones in electronic products such as communication equipment and household appliances has gradually increased in recent years.

The existing electret microphone generally includes a metal casing, a steel mesh, a diaphragm, a back plate, a back pole seat, a damper plate, a gasket and a lock nut and the like. Since the nut is completely exposed, the nut is easily loosened. In the case, and a flat gasket is connected between the lock ring and the damper plate, the force is uneven, which affects the product quality.

Therefore, in view of the lack of the prior art, the main purpose of the present invention is to provide a back-polarized large-diaphragm microphone that prevents the nut from loosening and falling, and has good contact, which is compact in combination, can ensure electrical connection performance, and is highly sensitive. Low noise and good sound quality.

The back-type large diaphragm microphone of the present invention comprises a metal casing, a pair of lugs and a diaphragm mounted in the metal casing, a back plate, a back seat, a damper plate and a fixed gasket. And a lock ring, the diaphragm, the back plate, the back pole, the damper plate, the fixing washer and the lock ring are disposed from bottom to top, and the lug is disposed on the damper plate and protrudes The first gasket is disposed between the diaphragm and the back plate, and a metal gasket is disposed between the back plate and the back electrode. A second gasket is disposed between the damper plates, and a wavy gasket is interposed between the damper plate and the lock ring, and a fixing gasket is further disposed between the wavy gasket and the damper plate, the metal pad The back piece and the damper plate are fixed to each other through a fixing member, the fixing member includes a screw and a nut, the nut is embedded in the damper plate; the back plate and the back pole seat and the back pole seat A gap is provided between the damper plates.

Further, the metal casing has a cylindrical shape with both ends open, wherein one end is completely open, and the other end side wall extends inward to form a step.

Further, a steel mesh is added between the step and the diaphragm.

Further, a punching mesh plate is further disposed between the step and the steel mesh, and the punching mesh plate is provided with a plurality of sound holes.

Further, a plurality of first through holes for the sound to pass through are disposed on the surface of the back plate, and correspondingly, the back cover is further provided with a plurality of second through holes through which the sound passes, and the damper plate There are also a plurality of third through holes through which the sound passes.

Further, the bottom of the back pole has a cavity, and the back plate is located in the cavity.

Further, a center of the back pole is provided with a second fixing hole through which the screw passes, and correspondingly, a center of the damper plate is also provided with a third fixing hole through which the screw passes.

Further, the metal gasket is fixed on the back pole through the screw, and the metal gasket includes a fixing portion and a contact portion on both sides of the fixing portion, and a center portion of the fixing portion has a thread for the screw to pass through A fixing hole is formed by bending a tail end of the fixing portion at a 90 degree, and the contact portion has a flat shape.

Further, the damper plate has a convex portion, a accommodating hole is disposed at a center of the convex portion, the nut is embedded in the accommodating hole, and the groove is provided with two grooves on the edge of the convex portion. Set in the two grooves.

The effect of this creation is:

1. A gap is formed between the back pole seat and the damper plate, and the second gasket is sandwiched between the back pole seat and the damper plate to form air damping, so that the air permeability is good, vibration and noise reduction The effect is good.

2. The damper plate is provided with a receiving hole, and the nut is embedded in the accommodating hole. The structure is simple and the connection is firm, thereby effectively preventing the nut from loosening or falling off.

3. In the present invention, a metal gasket is disposed between the back plate and the back pole, and the metal gasket is fixed on the back pole through the screw, and the contact portions on the left and right sides of the metal gasket are flat plates. The shape makes the contact good and the flatness is good.

4. A wave-shaped gasket is disposed between the lock ring and the damper plate, and the wave-shaped gasket is formed to have a function of decompression and uniform force.

5. This creation uses a large diaphragm, which has the characteristics of good sound quality and clear sound.

Combining the above technical features, the main effects of the back-type large diaphragm microphone of the present invention will be clearly shown in the following embodiments.

First, please refer to the first to fifth figures. The back-diameter large diaphragm microphone of the present invention comprises a metal casing 1, a lug 11 and a diaphragm 4 mounted in the metal casing 1. a back plate 6, a back pole 8, a damper plate 10, a fixed gasket 12 and a lock ring 14, the diaphragm 4, the back plate 6, the back pole 8, the damper plate 10, the fixing pad The sheet 12 and the lock ring 14 are disposed from the bottom up, and the tab 11 is disposed on the damper plate 10 to protrude outside the metal casing 1.

A first spacer 5 is disposed between the diaphragm 4 and the back plate 6. A metal spacer 7 is disposed between the back plate 6 and the back pole 8. The back pole 8 and the back A second spacer 9 is disposed between the damper plate 10, and a wavy spacer 13 is interposed between the damper plate 10 and the lock ring 14. The wave pad 13 and the damper plate 10 are further disposed between the damper plate 10 and the damper plate 10. The fixing gasket 12, the metal gasket 7, the back pole 8 and the damper plate 10 are fixed to each other through a fixing member. The fixing member comprises a screw 101 and a nut 103, and the nut 103 is embedded in the damper plate 10. Inside.

Preferably, the metal casing 1 has a cylindrical shape with both ends open (see FIG. 5), wherein one end is completely open and the other end side wall extends inward to form a step 104 for the aforementioned The diaphragm 4 is limited.

Preferably, a gap is formed between the back plate 6 and the back pad 8 , and a plurality of first through holes 601 through which the sound passes are disposed on the surface of the back plate 6 , and correspondingly, the back The pole seat 8 is also provided with a plurality of second through holes 802 through which the sound passes, and the damper plate 10 is also provided with a plurality of third through holes 1003 through which the sound passes. Preferably, the bottom of the back pole base 8 has a cavity 801, the back plate 6 is disposed in the cavity 801, and a second portion for the screw 101 to pass through is disposed in the center of the back pole base 8 The fixing hole 803 is correspondingly disposed at a central position of the damper plate 10, and a third fixing hole 1004 through which the screw 101 passes is fixed. The metal gasket 7 is fixed to the back pole base 8 through the screw 101.

Preferably, the metal spacer 7 includes a fixing portion 701 and a contact portion 702 on both sides of the fixing portion 701. The fixing portion 701 has a first fixing hole 703 through which the screw 101 passes. The contact portion 702 is formed by bending the tail end of the fixing portion 701 at a 90 degree, and the contact portion 702 has a flat shape. Preferably, a gap is formed between the back pole base 8 and the damper plate 10, and the second spacer 9 is in close contact with the upper surface of the back pole base 8 and is in contact with the damper plate 10, so that The back pole base 8 and the damper plate 10 form an air damper, which has good air permeability and good anti-vibration and noise reduction effects.

Preferably, the damper plate 10 has a convex portion 1001. The central portion of the convex portion 1001 is provided with a receiving hole 1002. The nut 103 is embedded in the receiving hole 1002, so that the nut 103 is not easy to slide, and is stable and firm. . In addition, two recesses 1005 are defined in the edge of the convex portion 1001. The recess 1005 has a circular arc shape, and the lug 11 is disposed in the recess 1005.

The assembly process of the back-type large diaphragm microphone of the present invention is as follows: firstly, the screw 101 is sequentially passed through the metal gasket 7, the back pole seat 8, the washer 102, the second spacer 9 and the damper plate 10 from bottom to top. And the nut 103 is screwed and fixed; then, the metal shell 1 has the fully open end facing upward, and the diaphragm 4, the first spacer 5 and the back plate 6 are placed from top to bottom in order to make the film The sheet 4 is pressed against the step 104, and then the element formed by screwing the screw 101 and the nut 103 is placed in the metal casing 1. Finally, the fixed gasket 12, the wave-shaped gasket 13 and the like are sequentially placed. The lock ring 14 is such that the metal casing 1 and the lock ring 14 are matched and locked to complete the assembly.

Referring to the sixth embodiment, the specific structure of the second preferred embodiment of the present invention is substantially the same as the specific structure of the first preferred embodiment, except that the metal casing 1A is A steel mesh 3 is added between the step (not shown) and the diaphragm 4A.

Referring to the seventh and eighth embodiments, the specific structure of the third preferred embodiment of the present invention is substantially the same as the specific structure of the first preferred embodiment, and the difference is that: A punching mesh plate 2 and a steel mesh 3B are simultaneously disposed between the step 104B and the diaphragm 4B of the metal casing 1B. The punching mesh plate 2 is provided with a plurality of sound holes 201, and the number of the sound holes 201 is And the arrangement is not limited.

In summary, in the present invention, a gap is formed between the back pole base 8 and the damper plate 10, and the second gasket 9 is interposed between the back pole base 8 and the damper plate 10 to form air. Damping, making it breathable, anti-vibration and noise reduction. Furthermore, the damper plate 10 is provided with a accommodating hole 1002. The nut 103 is embedded in the accommodating hole 1002, and has a simple structure and a firm connection, thereby effectively preventing the nut 103 from loosening or falling off. A metal pad 7 is disposed between the back plate 6 and the back pad 8. The metal pad 7 is fixed to the back pad 8 through the screw 101, and the left and right sides of the metal pad 7 are The contact portion 702 has a flat shape so that the contact is good and the flatness is good. In addition, a wave-shaped gasket 13 is disposed between the lock ring 14 and the damper plate 10, and the wave-shaped gasket 13 functions to reduce pressure and force uniformly. Finally, this creation uses a large diaphragm, which has the characteristics of good sound quality and clear sound.

In view of the above description of the embodiments, the above-described embodiments are merely a preferred embodiment of the present invention, and the implementation of the present invention is not limited thereto. The scope, that is, the simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the creation of the creation, are within the scope of this creation.

1, 1A, 1B‧‧‧ metal casing 101‧‧‧ Screws 102‧‧‧ Washers 103‧‧‧ Nuts 104, 104B‧‧‧ Steps 2‧‧‧ Punching stencils 201‧‧‧ Sound holes 3, 3B‧ ‧ ‧ steel mesh 4, 4A, 4B ‧ ‧ diaphragm 5 ‧ ‧ first gasket 6 ‧ ‧ back plate 601 ‧ ‧ first through hole 7 ‧ ‧ metal gasket 701 ‧ ‧ fixed part 702‧‧‧Contacts 703‧‧‧First fixing hole 8‧‧‧Back pole 801‧‧‧Pocket 802‧‧‧Second through hole 803‧‧‧Second fixing hole 9‧‧‧Second pad 10‧‧‧ Damping plate 1001‧‧‧Protruding part 1002‧‧‧ accommodating hole 1003‧‧‧ Third through hole 1004‧‧‧ Third fixing hole 1005‧‧‧ Groove 11‧‧‧Wiring piece 12‧ ‧ ‧ fixed gasket 13‧‧‧ wave-shaped gasket 14‧‧‧ lock ring

[First figure] is an assembled perspective view of the first preferred embodiment of the present invention.

[Second figure] is another angle diagram of the first figure.

[Third Figure] is a plan view of the first preferred embodiment of the present invention.

[Fourth figure] is a cross-sectional view at the position III-III in the third figure.

[Fifth Figure] is an exploded view of the first preferred embodiment of the present invention.

[Sixth Drawing] is an exploded view of a second preferred embodiment of the present creation.

[Seventh figure] is an exploded view of a third preferred embodiment of the present invention.

[Eighth image] is a side sectional view showing the combination of the third preferred embodiment of the present invention.

1‧‧‧Metal casing

101‧‧‧ screws

103‧‧‧ nuts

104‧‧‧ steps

4‧‧‧ diaphragm

5‧‧‧First gasket

6‧‧‧Back plate

601‧‧‧ first through hole

7‧‧‧Metal gasket

8‧‧‧Back seat

801‧‧‧ cavity

803‧‧‧Second fixing hole

9‧‧‧Second gasket

10‧‧‧damper plate

1004‧‧‧ third fixed hole

11‧‧‧11 lugs

12‧‧‧Fixed gasket

13‧‧‧Wave gasket

14‧‧‧Lock ring

Claims (9)

A back-pole type large diaphragm microphone includes a metal casing, a pair of lugs, and a diaphragm mounted in the metal casing, a back plate, a back seat, a damper plate, a fixed gasket and a a locking ring, the diaphragm, the back plate, the back pole, the damper plate, the fixing washer and the lock ring are disposed from bottom to top, and the lug is disposed on the damper plate to extend to the a metal gasket is disposed between the diaphragm and the backing plate, and a metal gasket is disposed between the backing plate and the backing pole, the backing pole and the damping plate A second gasket is interposed therebetween, and a wavy gasket is interposed between the damper plate and the lock ring, and a fixing gasket is further disposed between the wavy gasket and the damper plate, the metal gasket, The back pole seat and the damper plate are fixed to each other through a fixing member, the fixing member includes a screw and a nut, the nut is embedded in the damper plate; the back plate and the back pole seat and the back pole seat and the damper There are gaps between the plates. The back-pole type large-diaphragm microphone according to claim 1, wherein the metal casing has a cylindrical shape with both ends open, wherein one end is completely open, and the other end side wall extends inward to form a step. The back-pole type large-diaphragm microphone according to claim 2, wherein a steel mesh is added between the step and the diaphragm. The back-pole type large-diaphragm microphone according to claim 3, wherein a punching stencil is further disposed between the step and the stencil, and the punching stencil is provided with a plurality of sound holes. The back-pole type large-diaphragm microphone according to the first aspect of the invention, wherein the back plate is provided with a plurality of first through holes for the sound to pass through, and correspondingly, the back pole is also provided There are a plurality of second through holes through which the sound passes, and the damper plate is also provided with a plurality of third through holes through which the sound passes. The back-pole type large-diaphragm microphone according to claim 1, wherein the bottom of the back pole has a cavity, and the back plate is located in the cavity. The back-pole type large-diaphragm microphone according to the first aspect of the invention, wherein the back pole base is provided with a second fixing hole through which the screw passes, and correspondingly, a center position of the damper plate is also provided. a third fixing hole through which the screw passes. The back-polarized large-diaphragm microphone according to the first aspect of the invention, wherein the metal gasket is fixed to the back pole through the screw, the metal gasket includes a fixing portion and is located at two sides of the fixing portion The contact portion has a first fixing hole through which the screw passes at a central position of the fixing portion, and the contact portion is formed by a 90 degree bending of the tail end of the fixing portion, and the contact portion has a flat shape. The back-pole type large-diaphragm microphone according to the first aspect of the invention, wherein the damper plate has a convex portion, and a central portion of the convex portion is provided with a receiving hole, and the nut is embedded in the receiving hole. In addition, two recesses are formed on the edge of the convex portion, and the aforementioned lug is disposed in the two recesses.