JP2007142910A - Microphone holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microphone holder capable of supporting a microphone formed of a long acoustic pipe at the side of a support in a right attitude, and also obtaining excellent vibration-proof effect. <P>SOLUTION: The microphone holder is composed of: a pair of vibration-proof rings 12, 12 circumferentially disposed at predetermined intervals at appropriate positions in the direction of length of an acoustic pipe 22; a pair of adjustment rings 13, 13 holding the outer peripheral surface sides of these vibration-proof rings 12, respectively; and a connection cylinders 14 positioned between these adjustment rings 13 so as to be connected to each of the adjustment rings 13, respectively while being floated from the side of the acoustic pipe 22. Each of the adjustment rings 13 disposed to freely move forward and backward in the direction of length with respect to the connection cylinders 14 and to fix its position is arranged so as to freely press the held vibration-proof ring 12 from loose contact to press contact toward the side of the connection cylinders 14 in accordance with the extent of forward/backward movement. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a microphone holder that can suitably hold a microphone formed using an acoustic tube while effectively reducing vibration noise.

  When the microphone is connected to a support such as a stand or boom while maintaining a suitable orientation and angle with respect to the sound source, the microphone is detachably attached to the base end side of the acoustic tube. It is connected to the support side through a microphone holder.

In this case, the microphone holder can reduce vibration and impact transmitted from the support side to the microphone side by elastically supporting the microphone via an appropriate vibration isolating material (shock mount). Yes. As the vibration isolator in this case, for example, a material formed of an elastic material such as rubber can be suitably used (Patent Document 1).
JP 2002-204491 A

  FIG. 4 is an explanatory view showing a conventional microphone holder mounted on the microphone side. As shown in the figure, the microphone M has an acoustic tube 5 having an open end surface on the distal end portion 5b side and a large number of sound holes 5c formed in the peripheral wall, and a base end portion 5a of the acoustic tube 5 inside. At least a microphone unit (not shown) housed in the housing and an output connector 6 connected to the microphone unit.

  In this case, the microphone holder 1 is attached to the base end portion 5a side of the acoustic tube 5 in which the sound hole 5 is not formed so as not to shield the sound hole 5c.

  Further, the microphone holder 1 includes a pair of holding rings 2 and 2 inserted along the length direction of the acoustic tube 5 and a pair of vibration isolating materials 3 and 3 respectively joined to the holding rings 2 and 2. And a connecting plate 4 that is laid between the anti-vibration materials 3 and 3 and connects a support body (not shown) such as a stand or a boom.

  In this case, the microphone holder 1 is configured to hold the microphone M in a state in which the microphone M side is separately supported via the pair of vibration isolating materials 3 and 3. The vibration isolator 3 is formed of an elastic material such as rubber, and is bonded and fixed to the connecting plate 4 via an adhesive, for example, to absorb vibration transmitted from the support side to the microphone M side. The anti-vibration (shock mount) effect can be secured.

  By the way, when a support body (not shown) is connected to the microphone M side via the microphone holder 1 as shown in FIG. Will be supported. Therefore, a moment force with the support position as a fulcrum acts on the microphone M side.

  On the other hand, the microphone M is supported by a pair of anti-vibration materials 3 and 3, and the fulcrum of the moment force can be considered as a support position by the anti-vibration material 3 near the base end portion 5a. Each of the vibration isolator 3 is made of an elastic material, and is elastically deformed (compressed) by the action of moment force.

  For this reason, the pair of vibration isolating materials 3 and 3 support a moment force larger on one side closer to the distal end portion 5b than on the other side closer to the proximal end portion 5a. Therefore, if the vibration isolator 3 has an inappropriate hardness, the vibration isolator 3 closer to the tip 5b has a larger deformation amount (compression amount), and as a result, the tip end of the microphone M moves downward. There is an inconvenience of tilting (sagging forward) and shifting from a desired sound source position.

  On the other hand, each anti-vibration material 3 can be formed of a harder material for the purpose of avoiding such inconveniences, but conversely, the amount of deformation is suppressed to be small and a desired anti-vibration effect cannot be secured. There was a difficult point.

  An object of the present invention is to provide a microphone holder that can suitably hold a microphone formed using an acoustic tube while effectively reducing vibration noise in view of the above-described problems of the prior art. And

  The present invention has been made to achieve the above object, and a pair of vibration isolating rings arranged around a predetermined interval at appropriate positions in the length direction of the acoustic tube in the microphone, and outer peripheries of these vibration isolating rings A pair of adjustment rings each holding the surface side separately and at least a connection cylinder positioned between the adjustment rings and connected to each adjustment ring separately from each other in a state of floating from the acoustic tube side Each of the adjustment rings arranged to be freely advanced and retracted in the length direction relative to the connecting cylinder and to fix the position of the connecting cylinder is held on the side of the connecting cylinder to the vibration-proof ring held in accordance with the degree of forward and backward movement. The most important feature is that the pressure from loose contact to pressure contact is freely arranged.

  In this case, each of the adjustment rings is preferably screwed and connected separately to the connecting cylinder so as to be able to advance and retract. Further, the connecting cylinder has an outer periphery on each open end surface of one end side and the other end side thereof. It is desirable to provide a slope that inclines toward the vibration-proof ring toward the direction.

  According to the present invention, the adjustment ring in the microphone holder presses the vibration isolating ring toward the connection cylinder in a floating state, so that the maximum compression site is located in the vicinity of the outer peripheral surface of the vibration isolating ring, and the vicinity of the inner peripheral surface. Since the minimum compression portion can be generated, the supporting force can be secured through the maximum compression portion, and at the same time, the vibration isolation effect can be obtained through the minimum compression portion. In addition, the adjustment ring can generate the maximum compression portion while changing the degree of pressing from the loose contact to the pressure contact with respect to the vibration isolation ring according to the adjustment position. The maximum compression site can be generated and the support force for the acoustic tube can be made variable.

  FIG. 1 is an explanatory view showing a cross-sectional structure of an example of the present invention, in which (a) shows a state where the vibration isolating ring is pressed and deformed, and (b) shows that the vibration isolating ring is not pressed. Each state is shown. According to these drawings, the microphone holder 11 includes a pair of vibration isolating rings 12 and 12 that are arranged around the microphone M at appropriate positions in the length direction of the acoustic tube 22 at predetermined intervals, and these vibration isolating rings. A pair of adjustment rings 13, 13 disposed so as to hold the outer peripheral surface 12 b side of 12 separately, and the adjustment ring 13 positioned between the adjustment rings 13 from the acoustic tube 22 side. It is comprised at least by the connection cylinder 14 connected separately in the floating state.

  Among these, each vibration isolation ring 12 is formed separately using an appropriate elastic material such as SR sponge previously subjected to SR processing for preventing static electricity generation, and has an inner peripheral surface with respect to the acoustic tube 22. The microphone 12 side is supported by directly contacting the 12a side, and at the same time, a function as a shock mount for reducing vibration transmitted to the microphone M side is also maintained.

  Further, each adjustment ring 13 is freely arranged to advance and retreat in the length direction with respect to the connecting cylinder 14 and to fix the position thereof. The adjustment ring 13 is directed toward the connecting cylinder 14 with respect to the vibration isolating ring 12 according to the degree of the forward and backward movement. Further, the pressure from the loose contact to the pressure contact is freely arranged.

  More specifically, based on the illustrated example, each adjustment ring 13 includes a female screw portion 13a in which a female screw is engraved on the side facing the outer peripheral surface 12b of each vibration isolation ring 12, and A pressing portion 13b extending integrally from the female screw portion 13a side and reaching the outer end surface 12d side of the vibration isolating ring is formed. For this reason, each adjustment ring 13 can be moved toward and away from the connecting cylinder 14 according to the degree of forward and backward movement, thereby making loose contact and pressure contact with the vibration isolation ring 12 possible. It will be possible.

  In this case, the pressing portion 13b in each adjustment ring 13 is arranged so that the open edge 13c defining the through hole 13d for inserting the acoustic tube 22 is away from the surface direction of the outer end surface 12d of the vibration isolation ring 12. It is formed tilted. The open edge 13c of the pressing portion 13b is formed in such a positional relationship that it floats from the acoustic tube 22 side when the adjustment ring 13 is connected to the connecting cylinder 14.

  On the other hand, the connecting cylinder 14 includes a male screw portion 14a in which a male screw is engraved on each outer peripheral surface of the one end side and the other end side with the large diameter portion 14b interposed, and via the large diameter portion 14b. For example, a support body (not shown) such as a stand or a boom can be connected.

  In addition, each open end surface 14c located on one end side and the other end side of the connecting cylinder 14 is formed by providing a slope (taper) that gradually inclines toward the vibration isolation ring 12 toward the outer peripheral side. Has been.

  Further, since the connecting cylinder 14 needs to be firmly connected to the support body, the connecting cylinder 14 is made of a material such as a strong metal or hard plastic. Further, since the connecting cylinder 14 directly receives vibration from the support side, in order to minimize vibration transmission to the microphone M side, the connecting cylinder 14 is male and floats from the acoustic tube 22 side. It is screwed and connected to the female screw portion 13a of the adjustment ring 13 via the screw portion 14a.

 For this reason, each adjustment ring 13 can be attached under an arrangement relationship that holds the vibration-proof ring 12 side.

  Next, taking the case where the present invention is applied to the microphone M formed using the long acoustic tube 22 shown in FIG. 2, the operation and effect will be described with reference to FIG. To the acoustic tube 22 in the microphone M, one adjustment ring 13 is sent to an appropriate position near the tip 22b, with the open edge 13c first, and one vibration-proof ring 12 is further sent.

  Next, the connecting cylinder 14 is fed into the acoustic tube 22 from the base end portion 22a side to the side of the one adjustment ring 13 and the one vibration isolation ring 12 that are already arranged, and then the other vibration isolation ring. 12, and the other adjustment ring 13 is fed with its open edge 13c behind.

  After the arrangement of the pair of vibration isolating rings 12, 12, the pair of adjusting rings 13, 13 and the connecting cylinder 14 on the acoustic tube 22 side is finished, the female screw portion 13 a of one adjusting ring 13 is connected. The female screw portion 13a of the other adjustment ring 13 is screwed into the other male screw portion 14a of the connecting cylinder 14 and connected to one male screw portion 14a of the cylinder 14.

  Each adjustment ring 13 can press the pressing portion 13b against the outer end face 12d side of the vibration isolation ring 12 by turning in a direction approaching the connecting cylinder 14 side. When the microphone M formed using the long acoustic tube 22 is formed as shown in FIG. 2, the vibration-proof ring 12 also has its inner end face 12 c and outer end face by tightening the adjustment ring 13 more strongly. As a result of being sandwiched between the pressing portion 13b and the open end surface 14c of the connecting cylinder 14 via 12d, the shape is deformed to the shape shown in FIG.

  In this case, each anti-vibration ring 12 is deformed so that its cross section has a truncated triangular pyramid shape according to the degree of inclination of the pressing portion 13b and the open end surface 14c of the connecting cylinder 14, and as a result, in the vicinity of its outer peripheral surface. The maximum compression site and the minimum compression site can be generated in the vicinity of the inner peripheral surface.

  Therefore, the microphone M formed by using the long acoustic tube 22 hangs forward as shown in FIG. 4 under the stable strong supporting force generated through the minimum compression portion of each vibration isolation ring 12. Therefore, the microphone holder 11 can be supported under the correct posture.

  In addition, each vibration isolation ring 12 is generated in a state where the vibration compression effect is maintained on the acoustic tube 22 side through the minimum compression portion as a result of generating the minimum compression portion in the minimum compression portion in the vicinity of the surface. Since contact can be made, vibration noise transmitted from a support body (not shown) such as a stand or a boom can be effectively reduced.

  Further, since the adjustment ring 13 is screwed into the connecting cylinder 14 side, the tightening is loosened to weaken the pressing force of the pressing portion 13b against the vibration isolating ring 12, so that the connecting cylinder 14 to the vibration isolating ring 12 is reduced. The pressure from the loose contact toward the side to the pressure contact can be freely arranged.

  For this reason, among the pair of vibration isolating rings 12, 12, the vibration isolating ring 12 disposed on the distal end portion 22 b side of the acoustic tube 22 is tightened with the adjustment ring 13 as shown in FIG. The anti-vibration ring 12 that is deformed into the shape of a triangular pyramid and is disposed on the base end 22a side of the acoustic tube 22 is disposed so as not to be deformed as shown in FIG. You can also

  Therefore, when the present invention is applied to the microphone M formed using the short acoustic tube 22 shown in FIG. 3, unlike the case shown in FIG. By loosely tightening each adjustment ring 13 as shown in FIG. 5A, it is possible to arrange each vibration isolation ring 12 without deforming and to impart a superior vibration isolation effect to the microphone M side.

  That is, according to the present invention, the microphone M is always on the support side under the posture and the excellent vibration-proofing effect regardless of the length of the acoustic tube 22. It can be supported.

  The above is the description of the present invention based on the illustrated example, and the specific configuration is not limited to this. For example, the connection between the adjustment ring 13 and the connection cylinder 14 is other than that in which the adjustment ring 13 is advanced and retracted by adjusting the position thereof by screwing the female screw portion 13a and the male screw portion 14a as illustrated. In addition, for example, by adopting a fitting structure capable of appropriately shifting the mutual positional relationship, it is possible to connect the connecting cylinder 14 while adjusting the position of the adjusting ring 13. Further, the vibration isolating ring 12 may have a cross-sectional shape that is not a quadrangle as shown in FIG.

It is explanatory drawing which shows the cross-sectional structure about an example of this invention, Among them, (a) shows the state which the vibration isolator ring was pressed and deform | transformed, (b) shows the state where the vibration isolator ring is not pressed, respectively. . Explanatory drawing which shows the state at the time of applying the example of this invention shown in FIG. 1 to the microphone formed using the elongate acoustic tube. Explanatory drawing which shows the state at the time of applying the example of this invention shown in FIG. 1 to the microphone formed using the short acoustic tube. Explanatory drawing which shows the state at the time of applying the conventional microphone holder to the microphone formed using the long acoustic tube.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Microphone holder 12 Anti-vibration ring 12a Inner peripheral surface 12b Outer peripheral surface 12c Inner end surface 12d Outer end surface 13 Adjustment ring 13a Female thread part 13b Press part 13c Open edge 13d Through-hole 14 Connection cylinder 14a Male thread part 14b Large diameter part 14c Open end surface DESCRIPTION OF SYMBOLS 15 Cylindrical elastic material 22 Acoustic tube 22a Base end part 22b Front end part 22c Sound hole 32 Output connector M Microphone

Claims (3)

A pair of vibration isolation rings arranged around the microphone tube at appropriate positions in the length direction of the acoustic tube at predetermined intervals, a pair of adjustment rings each holding the outer peripheral surface side of the vibration isolation rings, and It is composed at least of connecting cylinders that are located between the adjusting rings and are connected to each adjusting ring separately from each other in a state of floating from the acoustic tube side,
Each of the adjustment rings which are freely arranged to advance and retreat in the length direction relative to the connecting cylinder and to fix the position thereof, is directed toward the connecting cylinder toward the vibration-proof ring held in accordance with the degree of advancement and retraction. A microphone holder characterized in that a pressure from loose contact to pressure contact is freely arranged.   2. The microphone holder according to claim 1, wherein each of the adjustment rings is screwed and connected to the connection cylinder so as to freely advance and retract. 3. The microphone holder according to claim 1, wherein the connecting cylinder is provided with an inclination inclined to the vibration-proof ring side toward the outer peripheral direction on each open end surface of one end side and the other end side thereof.

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