JP2013034097A - Shock mount for microphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shock mount for microphone such that an elastic cord is easily replaced and a microphone does not fall from the shock mount even if external force is applied during use of the shock mount.SOLUTION: The shock mount for microphone includes: a mount member 210 which holds a microphone body; a support base 220 which has an internal diameter larger than the external diameter of the mount member; and an elastic cord 230 which is tensed between the support base 220 positioned at an axially intermediate part of the mount member 210 and both axial sides of the mount member 210, and holds the mount member apart from the support base. The mount member has an elastic cord hook 213, to which the elastic cord is hooked, formed facing an interior of the mount member, the microphone body is made larger in diameter than a part received by the mount member to have a step part 243, and the step 243 and a press member 250 hold the mount member 210 therebetween.

Description

  The present invention relates to a shock mount for a microphone that can be easily maintained.

  Microphones used in broadcasting studios and recording studios, when vibration from the floor of a building is transmitted to the microphone, noise is mixed into the electroacoustic conversion signal, so that the vibration is not transmitted to the microphone via a shock mount. It is supported. The shock mount is sometimes called a cradle suspension.

  As a shock mount for a microphone, a mount member that receives and holds the microphone body, a support base that is formed in a ring shape with an inner diameter larger than the outer diameter of the mount member, and an elasticity that holds the mount member apart from the support base What has a string is known. The invention described in Patent Document 1 is one of them, and an elastic string is bridged between a support base located at the axially central portion of the mount member and both axial ends of the mount member. The mount member is held away from the support base by applying an appropriate tension to the elastic string.

  The support base is coupled to a microphone stand, and the microphone stand is placed on a floor such as a studio or a table. When the floor or table vibrates, the vibration is transmitted from the microphone stand to the support base, but the vibration is prevented from being transmitted to the mount member by the elastic string interposed between the support base and the mount member, and the microphone Prevents vibration noise from entering the output signal.

  The elastic cord used in the conventional shock mount is basically a rubber cord, and the outer surface of the rubber cord is threaded to prevent the rubber cord from deteriorating due to a chemical change over time. An elastic string covered or covered with a stretchable cloth is used. The elastic string is formed in an endless loop shape like a rubber band, and is spanned between both ends in the axial direction of the support base and the mount member at a plurality of, for example, four locations in the circumferential direction of the mount member and the support base.

  The support base is an immovable member coupled to the microphone stand, while the mount member is a movable part that can move integrally with the microphone. The elastic string that supports the movable portion is distributed toward both ends in the axial direction of the mount member around the support base located in the center in the axial direction of the mount member, and is hooked on both ends in the axial direction of the mount member. The support center of the mount member by the elastic string is at the center in the axial direction of the mount member.

JP 2002-204491 A

  As described above, since the elastic string used for the shock mount is basically a rubber string, it is deteriorated by oxidation by oxygen or ozone, chemical change by irradiation of natural light or illumination light, and the like. Therefore, since the elastic string needs to be periodically replaced, it is desirable that the elastic string can be easily replaced.

  Conventional shock mounts are mainly configured so that looped elastic cords are hooked to elastic straps at both ends of the mount member so that the elastic cord can be easily replaced by removing the microphone from the mount member. is there. In the shock mount having such a configuration, a part of the loop-shaped elastic string is folded, and the folded portion is inserted from the outside to the inside of the mount member at the elastic string hook forming portion and hooked on the elastic string hook. Appropriate tension is applied to the elastic string, and the elastic string is hooked to both ends of the mount member via the outer portion of the support base. When removing the elastic string, the elastic string may be removed from the elastic string hook.

  According to the conventional shock mount configured as described above, maintenance such as replacement of the elastic string is relatively easy. In addition, when the microphone is inserted in the mount member, the microphone main body prevents the elastic string from being detached from the elastic string hook of the mount member. However, according to the conventional shock mount, the microphone may fall off the mount member when an unexpected situation occurs. For example, when a microphone is attached to a shock mount and a microphone cable is connected to the microphone, if someone's foot is caught on the microphone cable, stress is applied between the microphone and the shock mount, and the microphone falls off the shock mount. And the microphone may be damaged.

  Therefore, it is desirable that the microphone shock mount has a configuration capable of realizing the following functions. That is, the elastic strap can be easily replaced when the shock mount without the microphone inserted in the mount member is not used, and between the microphone and the shock mount when the microphone is inserted into the mount member and the shock mount is used. It is desirable that the microphone does not fall off the shock mount even when stress is applied to the.

  Accordingly, an object of the present invention is to provide a shock mount for a microphone in which the elastic string can be easily exchanged and the microphone does not fall off the shock mount even when an external force is applied when the shock mount is used.

The microphone shock mount according to the present invention is:
A mounting member for receiving and holding the microphone body;
A support base formed in an arc shape having an inner diameter larger than the outer diameter of the mount member;
The mount member is held apart from the support base by being stretched between the support base located at the axially intermediate portion of the mount member and both sides of the mount member in the axial direction. An elastic string,
The mount member is formed with an elastic strap for hooking the elastic strap toward the inside of the mount member,
The main feature of the microphone main body is that the microphone body has a stepped portion having a diameter larger than that of the portion received by the mount member, and the mount member is sandwiched between the stepped portion and the pressing member.

  Even when stress is applied between the microphone and the shock mount when the shock mount is used, the microphone is not dropped from the shock mount because the mount member is sandwiched between the step of the microphone body and the holding member. Can be protected. If the microphone is removed from the mount member, the elastic string can be easily replaced.

It is a partial cross section front view which shows the Example of the shock mount of the microphone which concerns on this invention in the state with which the microphone was mounted | worn. It is a partial cross section exploded front view of the said Example. It is a top view of the said shock mount. It is a disassembled side view of the said Example. It is a side view of the said Example. The elastic string used for the said Example is developed and shown, (a) is a partial cross section top view, (b) is a side view. It is a partial cross section top view which expands and shows the above-mentioned elastic string.

  Embodiments of a microphone shock mount according to the present invention will be described below with reference to the drawings.

  1 to 5, reference numeral 240 indicates a microphone. The shock mount that supports the microphone 240 includes a mount member 210, a support base 220, and an elastic string 230 as main components.

  The mount member 210 is a cylindrical member as a whole, and the outer peripheral surface of the case of the microphone 240 is held by a cylindrical inner peripheral surface. At both ends of the mount member 210 in the central axis direction (vertical direction in FIGS. 1 and 2), elastic straps 213 are formed at four locations in the circumferential direction as shown in FIG. The elastic strap hook 213 is for hooking the elastic strap 230 formed in a loop shape from the outer peripheral side of the mount member 210, and is formed in a bowl shape facing the inner peripheral side of the mount member 210. By forming notches 214 on both sides of each elastic strap hook 213, the elastic strap hook 213 is formed in a protruding shape in the central axis direction of the mount member 210. The elastic string 230 is hooked on the elastic string hook 213 by passing the notches 214 on both sides of the elastic string hook 213 from the outside to the inside of the mount member 210 and further toward the outside. The elastic strap hook 213 is formed by retreating from the inner peripheral surface of the mount member 210 outward in the radial direction so that the elastic strap 230 hooked on the elastic strap hook 213 does not protrude largely toward the inner peripheral surface side of the mount member 210. ing.

  The front surface of the microphone 240 to be held by the mounting member 210 is the lower side in FIG. 3, and the four elastic strap hooks 213 are equally distributed between the front side and the back side of the microphone 240. And it is formed so as to be symmetrical. The mount member 210 is configured to receive the lower half portion of the microphone 240 on the inner peripheral side thereof and hold the microphone 240.

  The support base 220 may basically be formed in a ring shape, but the support base 220 in this embodiment is formed in a partial arc shape with a part of the arc cut away as shown in FIG. Yes. In FIG. 3, reference numeral 228 indicates the cut portion. The cut-out portion 228 corresponds to the front surface of the microphone 240 to be held by the mount member 210, that is, the sound collection surface side. The inner diameter of the arc-shaped support base 220 is sufficiently larger than the outer diameter of the mount member 210, and the mount member 210 is positioned with a sufficiently large space on the inner peripheral side of the support base 220.

  In FIG. 3, the support base 220 has a bilaterally symmetric shape with respect to the center line in the front-rear direction (vertical direction in FIG. 3) by forming the cut portion 228 as described above. The arm 270 protrudes outward in the radial direction from the center in the length direction (circumferential direction) of the support base 20, that is, from the position corresponding to the back surface of the microphone held by the mount member 210. The arm 270 is connected to a connection bracket with a microphone stand (not shown), and the microphone stand supports the shock mount according to the present embodiment.

  The support base 220 has holes 222 that form a pair on the left and right on a line that is perpendicular to the center line in the front-rear direction that divides the support base 220 into left and right and passes through the center point of the arc of the support base 220. The support base 220 is formed radially inward from the outer peripheral surface. In each hole 222, an outer shell member 225 of an elastic string 230, which will be described later, is fitted.

  In the support base 220, the following notches are formed at several locations and symmetrical positions. That is, the notches 226 are formed from the outer peripheral surface of the support base 220 toward the radially inner side at the equidistant positions in the circumferential direction of the support base 220 around the holes 222 into which the outer shell members 225 of the elastic strings 230 are fitted. ing. Further, notches 227 are formed from the outer peripheral surface of the support base 220 toward the inside in the radial direction at equidistant positions in the circumferential direction of the support base 220 around the arm 270. Each of the notches 226 and 227 functions to relay the elastic string 230 spanning the upper and lower ends of the mount member 210 and to position the mount member 210 in the circumferential direction.

  6 and 7 show the configuration of the elastic string 230. As shown in FIGS. 6 and 7, the elastic cord 230 is formed by folding back two elastic cords 230 having the same length and bundling both ends of the two elastic cords 230. doing. Two loop-shaped elastic cords 230 overlap each other, and as shown in FIG. 6B, the end surfaces of the four elastic cords 230 appear on the end surfaces of the binding hardware 231. In this embodiment, two sets of elastic strings 230 integrated in this way are used. The binding metal fittings 231 of the two sets of elastic cords 230 are fitted on the outer shell member 225 as shown in FIGS.

  As shown in FIGS. 1 and 2, the elastic string 230 forming one set is configured such that the binding metal 231 is fitted into the outer shell member 225, and the outer shell member 225 is inserted into the hole 222 of the support base 220 in the radial direction of the support base 220. Inserted inward. As shown in FIGS. 3 and 4, the two elastic strings 230 forming one set are distributed to the left and right, and the left and right elastic strings 230 are respectively stretched over the elastic string hooks 213 at both the upper and lower ends of the mount member 210. The positioning is performed by relaying the notch 226 of the support base 220. Therefore, the same tension is evenly generated in the elastic string 230 distributed to the left and right.

  The other two elastic cords 230 forming one set are also distributed to the left and right in the same manner on the surface opposite to the surface shown in FIG. 4, and spanned to both ends in the axial direction of the mount member 210 via the support base 220. Has been. The same tension is evenly generated in the elastic string 230 distributed to the left and right.

  Two sets of elastic cords 230 forming a pair are arranged on the left and right with the center line in the front-rear direction of the mount member 210 as a boundary, and spanned across the axial ends of the mount member 210 via the support base 220, respectively. Appropriate tension is applied to the elastic string 230. With this configuration, the mount member 210 is elastically supported by being separated from the support base 220 on the inner peripheral side of the support base 220.

  In the illustrated embodiment, a pair of elastic cords 230 is formed by binding both ends of two elastic cords 230 with a binding metal 231, but both ends and lengths of one elastic cord 230 are formed. The folded portion at the center in the direction may be bundled and bound by a binding member. Alternatively, a single elastic string 230 in a loop shape is overlapped in a single line, and the central part in the length direction is folded, and the folded part is bundled and bound by a binding member to form a set of elastic strings. Also good. In short, it is only necessary to form a pair of elastic strings by extending the elastic string in two equal loops around the binding portion.

  The lower half of the microphone 240 is a grip portion that can be held by hand, and the mount member 210 receives this grip portion. The outer diameter of the grip portion of the microphone 240 is slightly smaller than the outer diameter of the sound collecting portion, and a step portion 243 is formed between the grip portion and the sound collecting portion. A holding member 250 is fastened with a screw 260 to the lower end surface of the microphone 240 received by the mount member 210. The outer peripheral edge of the pressing member 250 covers a part of the elastic strap hook 213 on the lower end side of the mount member 210. A step portion 243 of the microphone 240 covers a part of the elastic strap hook 213 on the upper end side of the mount member 210. The mount member 210 is sandwiched from above and below by the pressing member 250 and the step portion 243 of the microphone 241 to prevent the microphone case 241 and the elastic string 230 from falling off the mount member 210.

  A microphone connector 244 protrudes from the lower end of the microphone case 241 through the center hole of the pressing member 250. As shown in FIG. 5, a cable connector 280 is coupled to the microphone connector 244 so that an output signal of the microphone 240 is output to an external circuit via the microphone cable.

  In a state where the mount member 210 receives the microphone 240, the mount member 210 and the microphone 240 are supported via the elastic string 230, thereby being a movable part that can move integrally. The weight distribution of the microphone 240 is taken into consideration so that the center of gravity of the movable part as a whole is located on a horizontal line connecting the center positions of the left and right holes 222 of the support base 220.

  As can be seen from FIGS. 1, 2, etc., the mount member 210 is approximately even in the vertical direction at the approximate center in the axial direction around the horizontal line connecting the center positions of the left and right holes 222 of the support base 220 by the elastic string 230. It is supported by tension. As can be seen from FIG. 3, the elastic string 230 is equally tensioned left and right with respect to the center line in the front-rear direction of the mount member 210, and is centered on a horizontal line connecting the center positions of the left and right holes 222. The tension is applied evenly in the front and rear direction. Therefore, the mount member 210 is supported in a well-balanced manner in the front, rear, left, and right, and the mount member 210 and the support base 220 are on concentric arcs.

  According to the embodiment of the microphone shock mount described above, the mount member 210 is sandwiched from above and below by the pressing member 250 and the step portion 243 of the microphone 241, so that the microphone 240 is securely and firmly coupled to the mount member 210. . Therefore, even if an external force is applied to the microphone cable connected to the microphone 240 due to a factor such as a foot being caught, the microphone 240 does not fall off the shock mount, and the microphone is prevented from being damaged by the shock mount. . When the microphone 240 is attached to the shock mount, the microphone main body prevents the elastic string 230 from being detached from the elastic string hook 213 of the mount member 210, so that the elastic string does not fall off.

  When replacing the elastic string 230, the microphone 240 is removed from the mount member 210. Since the elastic cord 230 only needs to be hooked on the elastic strap hook 213 of the mount member 210 and the elastic cord 230 hooked on the elastic strap hook 213 is removed, the workability of exchanging the elastic strap 230 is good. Since the elastic string 230 is positioned with respect to the support base 220 by simply dropping the binding metal 231 into the hole 222, the maintenance workability of the elastic string 230 is also improved in this respect.

  Since the elastic strap hook 213 of the mount member 210 is formed into a shape that allows the elastic strap 230 to be hooked, it tends to have an acute shape. Even if the shape of the elastic strap hook 213 is an acute angle, the step portion 243 of the microphone 241 is placed on the elastic strap hook 213, so that the exposure of the acute angle elastic strap hook 213 is performed. The amount is small. Therefore, it can be avoided that a person's hand or face comes into contact with the elastic strap hook 213, and the hand or face can be protected.

  The elastic string 230 is mainly composed of a rubber string, and deteriorates due to a chemical change with time. Therefore, it is desirable to replace the elastic string 230 periodically. According to the embodiment described above, the bundling metal fitting 231 obtained by joining the two elastic strings 230 is fitted into the outer shell member 225, and the outer elastic member 225 is inserted into the hole 222 of the support base 220. 230 may be bridged between the mount member 210 and the support base 220 as described above. When removing the elastic string 230, conversely, the elastic string 230 may be removed from the mount member 210 and the support base 220, and the binding metal 231 may be extracted from the hole 222 of the support base 220. Therefore, there is an advantage that the replacement work of the elastic string 230 is facilitated. In addition, the bundling metal fitting 231 in which the two elastic strings 230 are coupled may be directly inserted into the hole 222 of the support base 220 without the outer shell member 225 being interposed.

The support base 220 in the illustrated embodiment is formed by cutting out a part of the ring, but may be a complete ring-shaped member.
In addition, the form of the elastic string between the mount member 210 and the support base 220 can be changed to various forms, and the form of the elastic string in the illustrated embodiment is merely an example.

1 and 2, reference numeral 212 denotes an inner peripheral surface of the mount member 210. If the inner peripheral surface 212 of the mount member 210 is implanted by electrostatic flocking or the like, the microphone 240 is moved when the microphone 240 moves relative to the mount member 210 or when an external force is applied to the mount member 210. It is possible to prevent noise from being mixed into the output. The surface of the elastic string 230 may be flocked. However, it is not essential in the present invention to apply flocking as described above.
In addition, the design may be arbitrarily changed without departing from the technical scope described in the claims.

  In the illustrated embodiment, the microphone is held upward with respect to the mount member 210. However, the microphone may be held downward at the use site of the microphone.

210 Mounting member 213 Elastic string hook 220 Support base 222 Hole 230 Elastic string 240 Microphone 231 Bundling bracket 243 Microphone step 250 Holding member

Claims (4)

A mounting member for receiving and holding the microphone body;
A support base formed in an arc shape having an inner diameter larger than the outer diameter of the mount member;
The mount member is held apart from the support base by being stretched between the support base located at the axially intermediate portion of the mount member and both sides of the mount member in the axial direction. An elastic string,
The mount member is formed with an elastic strap for hooking the elastic strap toward the inside of the mount member,
The microphone shock mount, wherein the microphone main body has a stepped portion having a diameter larger than that of the portion received by the mount member, and the mount member is sandwiched between the stepped portion and the pressing member.   2. The microphone shock mount according to claim 1, wherein the pressing member is coupled to one end of the microphone body and presses one end of the mounting member.   The microphone shock mount according to claim 1 or 2, wherein a step portion of the microphone body is in contact with an elastic strap of the mount member. The elastic cord has a binding metal fitting, the elastic cord extends from the binding metal fitting into two equal loops, and the binding metal fitting is positioned by being fitted into a hole formed in a support base. A microphone shock mount according to 1, 2 or 3.

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