CN2241960Y

CN2241960Y - Noise-removing device for mouthpiece of microphone

Info

Publication number: CN2241960Y
Application number: CN 95203555
Authority: CN
Inventors: 张金炉
Original assignee: CAROL ELECTRONICS Co Ltd
Current assignee: CAROL ELECTRONICS Co Ltd
Priority date: 1995-02-08
Filing date: 1995-02-08
Publication date: 1996-12-04
Anticipated expiration: 2005-02-08

Abstract

The utility model relates to a noise-removing device for the mouthpiece of a microphone, comprising a hard fixing sheet which is arranged on the bottom surface of the circumference of a vibrating membrane in a microphone head, and a bumper pad which is an annular block body with softness made up of polyvinyl chloride material or gum material. The bumper pad is attached to the parietal margin side of an outer gum ring. The noise transmitted form the microphone body can be eliminated, and the quality of the microphone is raised.

Description

The elimination noise device of microphone sound head

The utility model relates to a kind of elimination noise device of microphone sound head, particularly relates to a kind of microphone sound head vibrating membrane bottom surface that is located at, and can eliminate the elimination noise device of the microphone sound head of noise.

The structure of microphone sound head in the past can be divided into two kinds of condenser type and moving-coil types according to the principle of using.The structure of dynamic microphones sound head, as shown in Figure 1.This microphone sound head 10 is that a magnet 11 and a yoke 12 are concerned according to ectonexine; dispose the interior glue ring 13 of a predetermined altitude between the two; and 12 ring weeks of yoke form the coating shell of an external adhesive ring 14; the external adhesive ring 14 tops vibrating membrane 15 that is sticked; vibrating membrane 15 bottom surface cementations have coil 16; coil 16 is placed on

magnet

11,12 of yokes and interior glue ring 13 tops place, formed space; the top lid is established an over cap 17; the sheathed bonnet 18 in external adhesive ring 14 outsides; a cover unification tone chamber 20, bonnet 18 bottoms, thus whole audio header structure formed.The working method of this dynamic microphones sound head, it is the frequency response that produces high, medium and low sound by vibrating membrane 15, be attached to the coil 16 on the vibrating membrane 15, in magnetic field with acoustic response, be attached to the coil 16 on the vibrating membrane 15, cutting magnetic line produces the output of audio frequency induced electromotive force with the acoustic response vibration in magnetic field, through amplifier signal is amplified then, spread out of from loudspeaker again.

Above-mentioned microphone sound head 10 in use, have the interference of noise, its reason is: as shown in Figure 2, assembled sectional view for the microphone unitary construction, above-mentioned microphone sound head 10 is installed in body 30 tops made from zinc pipe, be set in this sound head 10 outsides with a spherical guard 31 again, when people utilize microphone talk or sing, the part that holds body 30 usually is subjected to touching in one's hands or moves friction, and the generation noise, this noise is passed to the bonnet 18 of sound head 10 indirectly by body 30, external adhesive ring 14, and pass to the face and the coil 16 of vibrating membrane 15 from the vibrating membrane 15 ring peripheries that fit with external adhesive ring 14, similarly along with voice or song, be exaggerated together and spread out of noise, and influence the quality of microphone from loudspeaker.

The purpose of this utility model provides a kind of elimination noise device of eliminating noise, improving the microphone sound head of microphone quality.

Of the present utility model being characterised in that: this elimination noise device is to encircle in the ring week bottom surface of microphone sound head internal vibration film to establish a hard stator and a cushion pad, this cushion pad be one with polyvinyl chloride (PVC) or the made ring-type block of glue class material with softness, the apical margin limit of cushion pad and microphone sound head external adhesive ring fits, can eliminate the noise that transmits from microphone body, to improve the quality of microphone.

The sound head of microphone of the present utility model is eliminated the noise device, with a hard fixedly loop establish the ring periphery that is bonded in microphone sound head vibrating membrane bottom surface, this hard stator is a thin body of ring-type that cooperates vibration zona week diameter, hard stator bottom surface is stained with a cushion pad, cushion pad is one and includes bubble with polyvinyl chloride (PVC) or glue class material and make and have softness and shape equal and opposite in direction in the ring-type block of this hard stator, this cushion pad and sound head external adhesive ring top ring edge fit, make the noise that produces from microphone body, when external adhesive ring passes to cushion pad, be eliminated, and can directly do not pass to vibrating membrane.

Be elaborated below by most preferred embodiment and accompanying drawing elimination noise device to microphone sound head of the present utility model, in the accompanying drawing:

Fig. 1 is the assembled sectional view of microphone sound head in the past.

Fig. 2 is the assembled sectional view of microphone in the past.

Fig. 3 is the assembled sectional view of the utility model first most preferred embodiment microphone sound head.

Fig. 4 is the stereogram of the above-mentioned most preferred embodiment of the utility model.

Fig. 5 is the utility model second most preferred embodiment microphone sound head assembled sectional view.

Fig. 6 is the above-mentioned most preferred embodiment stereogram of the utility model.

As shown in Figure 3, the elimination noise device of the microphone sound head of the utility model first embodiment, identical with in the past of the structure of this microphone sound head 40 and assembling mode, concern according to ectonexine with a magnet 41 and a yoke 42 equally, be positioned in the mould, at magnet 41 and interior glue ring 43 of 42 configurations of yoke, and form one at Zhou Youyi external adhesive ring of yoke 42 rings 44 and coat shell, external adhesive ring 44 apical margin rings are established a ring edge 441, vibrating membrane 45 a bottom surfaces ring is established a coil 46, coil 46 is sleeved on magnet 41 apical margins, the sheathed bonnet 47 in external adhesive ring 44 outsides, a cover unification tone chamber 48, bonnet 47 bottoms, elimination noise device 50 of the present utility model is located at the bottom surface of this vibrating membrane 45.

As shown in Figure 4, eliminate noise device 50 and have a hard stator 51, hard stator 51 uses stainless steel made in the present embodiment, it is a thin body of ring-type that cooperates all diameter of vibrating membrane 45 rings, hard stator 51 sticks at the ring periphery 451 of vibrating membrane 45 bottom surfaces, the ring-type cushion pad 52 of one of this hard stator 51 belows bonding and hard stator 51 same diameter, it is made that this cushion pad 52 includes bubble with polyvinyl chloride (PVC) or glue class material, be a ring-type block with softness, this cushion pad 52 of mat fits with the ring edge face 441 at external adhesive ring 44 tops.Pass to the noise of external adhesive ring 44 indirectly from microphone body, fully sponged during through cushion pad 52, can directly not pass to vibration 45, thereby play the elimination noise.This hard stator 51 is for the needs on producing and assembling, because the thin property of the flexibility of cushion pad 52 and vibrating membrane 45, can be bonded in 45 of cushion pad 52 and vibrating membranes by hard stator 51, has remedied the shortcoming of its undercapacity.

The utility model microphone sound head is eliminated noise device 50, the cushion pad 52 that utilizes a polyvinyl chloride (PVC) or the infusion of glue class material gassiness to become, as the intermediary of vibrating membrane 45 with external adhesive ring 44, because cushion pad 52 can fully absorb the microphone case body portion because of the noise that vibrates or friction is produced, by this effect can eliminate hold microphone produce the touching or the friction noise pass to vibrating membrane 45, spread out of and be exaggerated via loudspeaker, disturb the sound transmitted (sound of speech or sing sound), influence the quality of microphone.

As Fig. 5, shown in 6, the elimination noise device 60 of the utility model second most preferred embodiment has a sticking cushion pad 61 of being located at the ring periphery 711 of sound head 70 internal vibration films 71 bottom surfaces, this cushion pad 61 is that to contain bubble with polyvinyl chloride (PVC) or glue class material made, it is a ring-type block that has softness and cooperate all 711 diameter of vibrating membrane 71 rings, hard stator 62 of cushion pad 61 bottom surfaces bonding, hard stator 62 is a thin body of ring-type that cooperates cushion pad 61 shape sizes, these hard stator 62 bottom surfaces another cushion pad 63 that bonds, the structure of the structure of cushion pad 63 and above-mentioned cushion pad 61 is identical, and cushion pad 63 is fitted mutually with the ring edge face 721 at external adhesive ring 72 tops, make the noise that produces from microphone body, pass to two cushion pads 61 through external

adhesive ring

72,62, through dual elimination effect, and can directly not pass to vibrating membrane 71, just can reach the purpose of eliminating noise.

Claims

1. the elimination noise device of a microphone sound head is bonded in microphone sound head internal vibration film bottom surface, it is characterized in that:

The elimination noise device of this microphone sound head has a hard stator and a sticking cushion pad of being located at this hard stator bottom surface, this hard stator is the thin body of the ring-type of all diameter of a cooperation microphone sound head vibrating membrane, it is made that this cushion pad includes bubble with polyvinyl chloride or glue class material, be a softness and the shape equal and opposite in direction ring-type block in this hard stator, this cushion pad and microphone sound head external adhesive ring top ring edge fit.

2. the elimination noise device of microphone sound head as claimed in claim 1 is characterized in that:

This hard fixedly loop is established the ring periphery that is bonded in microphone sound head vibrating membrane bottom surface.

3. the elimination noise device of microphone sound head as claimed in claim 1 is characterized in that:

This is bonded with another cushion pad that cooperates this hard stator shape size above hard stator, this cushion pad is bonded in the ring periphery of microphone sound head vibrating membrane bottom surface, and this cushion pad also is one and contains with polyvinyl chloride or glue class material that bubble is made a soft ring-type block.