JP4726217B2 - Microphone holder - Google Patents

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 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 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 elastic vibration isolation rings arranged around the microphone tube at appropriate positions in the longitudinal direction at predetermined intervals, and these elastic vibration isolation rings. A pair of adjustment rings each holding the outer peripheral surface side of each of the adjustment rings, and each of the adjustment rings is connected to each adjustment ring in a state of being floated from the acoustic tube side with respect to each adjustment ring , and each open at least consists of a coupling cylinder toward the respective outer peripheral direction on the end face to impart slope was inclined to elastic insulating ring side ing, freely advance and retreat with its position fixed in the longitudinal direction relative to said connecting cylinder each of the adjusting ring which is disposed, the degree of pressure that leads to the pressure from the gradual connection towards to the connecting cylinder side to said resilient anti-vibration ring and holding depending on the degree of advance and retreat, the tone The maximum compression site in the vicinity the peripheral surface of the elastic insulating ring between the open end face of the ring and the connecting cylinder, and most important feature that in the vicinity of the inner peripheral surface was capable of generating a minimum compression sites, respectively ing.

In this case, a pair of the adjusting-ring is provided with a pressing portion which is inclined forward to the outer end surface side of the elastic anti-vibration ring, of the elastic insulating ring between the open end face of the pressing portion and the connecting cylinder It is preferable that a maximum compression site can be generated near the outer peripheral surface and a minimum compression site can be generated near the inner peripheral surface. Further, it is preferable that each of the adjustment rings is screwed and connected to the connecting cylinder so as to freely advance and retract .

According to the present invention, the adjustment ring in the microphone holder, by pressing the resilient insulating ring toward the connecting cylinder side in a floating state, the maximum compression portion on the outer peripheral surface vicinity of the elastic anti-vibration ring, the inner peripheral Since the minimum compression site can be generated in the vicinity of the surface, it is possible to secure a supporting force through the maximum compression site and at the same time obtain an anti-vibration effect through the minimum compression site. Further, 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 elastic vibration isolation ring according to the adjustment position. A maximum compression site of a degree can be generated, and the supporting 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 in which an elastic vibration isolation ring is pressed and deformed, and (b) shows an elastic vibration isolation ring being pressed. Each state is shown. According to these drawings, the microphone holder 11 includes a pair of elastic vibration isolation rings 12 and 12 arranged around the microphone M at appropriate positions in the longitudinal direction of the acoustic tube 22 at a predetermined interval, and these elastic anti-vibration rings. A pair of adjustment rings 13, 13 arranged so as to hold the outer peripheral surface 12 b side of the vibration ring 12 separately, and an acoustic tube 22 for each adjustment ring 13 positioned between the adjustment rings 13. It is comprised at least by the connection cylinder 14 connected separately in the state which floated from the side.

Among these, each elastic vibration isolating ring 12 is formed separately by using an appropriate elastic material such as SR sponge that has been subjected to SR processing for preventing static electricity generation in advance. The microphone 12 side is supported by directly contacting the surface 12a side, and at the same time, a function as a shock mount that reduces vibration transmitted to the microphone M side is also maintained.

Each adjustment ring 13 is provided so as to freely advance and retreat in the length direction relative to the connecting cylinder 14 and to fix the position thereof, and to the connecting cylinder 14 side with respect to the elastic vibration isolation ring 12 according to the degree of the advance and retreat movement. The pressure from the loose contact toward the pressure contact is freely arranged.

This, if specifically described in further based on the illustrated embodiment, each adjustment ring 13 has a female screw portion 13a which female thread is engraved on the side facing the outer peripheral surface 12b of the elastic vibration isolation ring 12 And a pressing portion 13b that extends integrally from the female screw portion 13a side and reaches the outer end surface 12d side of the elastic vibration-proof ring. Therefore, the adjustment ring 13, is that the in accordance with the degree of forward and backward movement can contacting and separating with respect to connecting cylinder 14 side, thereby freely the gradual connection and pressure to the elastic vibration isolation ring 12 It will be possible.

In this case, the pressing portion 13b in each adjustment ring 13 has an open edge 13c that defines a through hole 13d for allowing the acoustic tube 22 to be inserted away from the surface direction of the outer end surface 12d of the elastic vibration isolation ring 12. It is formed tilted forward. 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.

Moreover, each open end surface 14c located in the one end side and the other end side in the connection cylinder 14 gives each the slope (taper) which inclines gradually toward the elastic vibration-proof ring 12 direction toward an outer peripheral side, respectively. Is formed.

  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 elastic 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 one adjustment ring 13 and the one vibration isolation ring 12 which are already arranged, and then the other elastic vibration isolation is provided. The ring 12 is fed, and the other adjustment ring 13 is fed with its open edge 13c behind.

After the arrangement of the pair of elastic vibration-proof rings 12, 12, the pair of adjustment rings 13, 13, and the connecting cylinder 14 with respect to the acoustic tube 22 side is finished, the female screw portion 13 a of one adjustment ring 13 is removed. The female threaded portion 13a of the other adjusting ring 13 is screwed into the male threaded portion 14a of the connecting cylinder 14 and connected to the male threaded portion 14a of the connecting cylinder 14 respectively.

Each adjustment ring 13 can press the pressing portion 13b against the outer end face 12d side of the elastic 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 elastic vibration isolating 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, its outer peripheral surface 12b. The maximum compression site can be generated in the vicinity, and the minimum compression site can be generated in the vicinity of the inner peripheral surface 12a .

Accordingly, the microphone M formed with an elongated acoustic tube 22, under stable strong supporting force is generated through the maximum compression portion of each elastic vibration isolation ring 12, as shown in FIG. 4 Thus, the microphone holder 11 can be supported under the correct posture without being drooped forward.

Moreover, the elastic vibration isolation ring 12, as a result of which the minimum compression site in the vicinity of the peripheral surface 12a is generated, the original state of being held vibration damping effect on the acoustic tube 22 side via the said minimum compression site Therefore, vibration noise transmitted from a support body (not shown) such as a stand or a boom can be effectively reduced.

The adjustment ring 13, since the screwed with connecting cylinder 14 side, by weakening the pressing force of the pressing portion 13b against the elastic vibration isolation ring 12 by loosening the fastening, connection to the elastic vibration isolation ring 12 The pressure from the loose contact toward the cylinder 14 side to the pressure contact can be freely arranged.

For this reason, of the pair of elastic vibration isolation rings 12 and 12, the vibration isolation ring 12 disposed on the distal end portion 22b side of the acoustic tube 22 is tightened to the adjustment ring 13 as shown in FIG. The elastic vibration-proof ring 12 which is deformed into a truncated triangular pyramid shape and is arranged on the base end portion 22a side of the acoustic tube 22 is prevented from being deformed as shown in FIG. Can also be arranged.

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. 5, it is possible to arrange each elastic vibration isolation ring 12 without deforming it 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 elastic vibration-proof 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, The (a) of them shows the state which the elastic vibration isolating ring was pressed and deform | transformed, (b) is the state where the elastic vibration isolating ring is not pressed. Each is shown. 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.

DESCRIPTION OF SYMBOLS 11 Microphone holder 12 Elastic vibration-proof 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 Opening End face 15 Cylindrical elastic material 22 Acoustic tube 22a Base end 22b Tip 22c Sound hole 32 Output connector M Microphone

Claims (3)

A pair of elastic vibration isolation rings arranged around the microphone tube at appropriate positions in the length direction of the acoustic tube at predetermined intervals, and a pair of adjustment rings for separately holding the outer peripheral surfaces of these elastic vibration isolation rings; , Located between these adjustment rings, individually connected to the individual adjustment rings in a state of floating from the acoustic tube side , and toward the elastic vibration-proof ring side toward the respective outer peripheral directions on the respective open end faces at least it consists of a coupling cylinder inclined ing to impart that is tilted with,
Each of the adjustment rings that are freely arranged to advance and retreat in the length direction relative to the connecting cylinder and to fix the position of the connecting cylinder is moved to the connecting cylinder side to the elastic vibration-proof ring held in accordance with the degree of forward and backward movement. Depending on the degree of pressing from the loose contact toward the pressure contact, between the adjustment ring and the open end surface of the connecting cylinder, a maximum compression site is provided in the vicinity of the outer peripheral surface of the elastic vibration isolation ring, and in the vicinity of the inner peripheral surface. A microphone holder characterized in that a minimum compression portion can be generated . A pair of the adjusting-ring is provided with a pressing portion which is inclined forward to the outer end surface side of the elastic anti-vibration ring, the outer peripheral surface of the elastic insulating ring between the open end face of the pressing portion and the connecting cylinder The microphone holder according to claim 1, wherein a maximum compression site can be generated in the vicinity and a minimum compression site can be generated in the vicinity of the inner peripheral surface . The microphone holder according to claim 1 or 2 , wherein each of the adjustment rings is screwed and connected to the connecting cylinder so as to freely advance and retract .

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