Microphone

Abstract

[Problem] To provide a microphone which has a simple configuration and reduces noise transmitted from a housing. [Solution] This microphone 1 comprises: a microphone unit 20; a unit holding member 30 for holding the microphone unit; a cylindrical grip 40 for accommodating therein the unit holding member; and a buffering member 60 interposed between the unit holding member and the grip, wherein the buffering member is floatingly held in a space S of which at least a portion is demarcated by the grip.

Description

[Technical field]

[0001] The present invention relates to a microphone. [Background technology]

[0002] Handheld microphones are known that are held by a user in the hand. When the user holds the microphone, the housing may produce vibrations or impact sounds. When the microphone picks up the vibrations or vibrations, noise or unpleasant sounds may be included in the collected audio.

[0003] For example, a unidirectional dynamic microphone having a shock mount that supports the microphone unit 20 on a support housing has been disclosed (see, for example, Patent Document 1). Patent Document 2 discloses a microphone device having a shock mount member made of an elastic material, in which the microphone unit 20 is supported inside a microphone case via the shock mount.

[0004] However, there are cases where vibrations transmitted via the shock mount are picked up by the microphone unit 20 as noise, and it cannot be said that noise from the housing can be sufficiently removed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6432051 [Patent Document 2] Patent No. 6516626 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a microphone that has a simple configuration and transmits little noise from its housing. [Means for solving the problem]

[0007] The microphone of the present invention comprises a microphone unit, a unit holding member that holds the microphone unit, a cylindrical grip that houses the unit holding member inside, and a buffer member interposed between the unit holding member and the grip, and is characterized in that the buffer member is held in a floating manner in a space at least a portion of which is partitioned by the grip. Effect of the Invention

[0008] According to the present invention, it is possible to provide a microphone having a simple configuration and in which noise transmitted from the housing is small. [Brief description of the drawings]

[0009] [Figure 1] 1 is a vertical cross-sectional view showing an embodiment of a microphone according to the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the microphone. [Diagram 3] FIG. 2 is a perspective view of a shock mount provided in the microphone. [Figure 4] FIG. 2 is a plan view of the shock mount. [Diagram 5] FIG. 3 is a cross-sectional view taken along line CC of the shock mount. [Figure 6] FIG. 2 is an enlarged view of part A in FIG. [Figure 7] 10 is a cross-sectional view showing the shock mount disposed inside a grip of a microphone. FIG. [Figure 8] FIG. 8 is an enlarged view of part D in FIG. [Figure 9] 3A and 3B are perspective views of a support bush provided in the microphone, in which (a) is a perspective view from the front side, and (b) is a perspective view from the rear side. [Figure 10] 4 is a cross-sectional view showing the support bush disposed inside the grip. FIG. [Figure 11] FIG. 11 is an enlarged view of part E in FIG. [Figure 12]FIG. 4 is a vertical cross-sectional view of the support bush. [Figure 13] FIG. 2 is an enlarged view of part B in FIG. [Figure 14] 1 is a graph showing frequency response characteristics of a microphone equipped with the above shock mount and a microphone in the related art. [Figure 15] 11 is a graph showing frequency response characteristics of a microphone equipped with the above support bush and a microphone in the related art. [Figure 16] FIG. 1 is a longitudinal sectional view of a microphone according to a related art. [Figure 17] FIG. 1 is a perspective view of a shock mount provided in a microphone in a related art. [Figure 18] FIG. 17 is an enlarged view of part F in FIG. 16. [Figure 19] 4 is a perspective view of a support bush provided in the microphone. FIG. [Figure 20] FIG. 17 is an enlarged view of part G in FIG. [Figure 21] FIG. 11 is a longitudinal sectional view of a microphone according to another related art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of a microphone according to the present invention will be described with reference to the drawings. The microphone according to the present invention is a handheld microphone that is mainly used by a user holding the housing. In the following description, the axial direction of microphone 1 is also referred to as the z direction, and the directions perpendicular to the z direction are also referred to as the x direction and y direction. The surface facing the +z direction is also referred to as the front surface, and the surface facing the -z direction is also referred to as the rear surface. The arrangement direction of the microphone is not limited to this direction.

[0011] ●Microphone● As shown in FIGS. 1 and 2, the microphone 1 mainly includes a head case 10, a microphone unit 20, a cavity cup 30, a grip 40, a shock mount 50, a support bush 60, a holder 70, and a grip housing 80.

[0012] ● Head Case 10 The head case 10 constitutes the upper end of the microphone 1 and has an opening through which sound waves pass. The head case 10 is made of a perforated plate such as punched metal or a net called a guard mesh. In this embodiment, the head cases 10 are paired above and below and are connected to each other via a connecting ring 11. The lower end of the head case 10 is connected to the grip 40 by an appropriate annular fixing member 12.

[0013] ●Microphone unit 20 The microphone unit 20 collects sound waves from a sound source. The microphone unit 20 is, for example, a dynamic microphone unit 20. The microphone unit 20 may be an electrostatic (condenser) microphone unit. The directivity of the microphone unit 20 is, for example, unidirectional, but may be a different directivity.

[0014] ●Cavity cup 30 1, the cavity cup 30 is a generally cylindrical member that holds the microphone unit 20 at its upper end. The cavity cup 30 mainly includes a unit accommodating portion 31, a central portion 32, a stepped portion 33, a recess 34, a truncated cone portion 35, and a small diameter portion 36.

[0015] The unit accommodating portion 31 is a portion at the upper end of the cavity cup 30 that accommodates the rear end of the microphone unit 20. The unit accommodating portion 31 has a larger inner diameter than the central portion 32 on the inner circumferential surface of the cavity cup 30. As a result, a step portion 33 is formed between the unit accommodating portion 31 and the central portion 32. The rear end of the microphone unit 20 abuts against this step portion 33, thereby defining the position of the microphone unit 20 in the front-rear direction. The cavity cup 30 is an example of a unit holding member.

[0016] The recess 34 is a portion formed around the entire circumference near the axial center of the cavity cup 30. In the recess 34, an annular shock mount 50 is fitted.

[0017] The truncated cone portion 35 is a portion that gradually narrows toward the rear end. The truncated cone portion 35 connects the central portion 32 and the small diameter portion 36.

[0018] The small diameter portion 36 is a cylindrical portion that constitutes the rear end of the cavity cup 30 and has a smaller radius than the central portion 32. The small diameter portion 36 is inserted into and supported by a support bush 60, which will be described later. An E-ring 90 is fitted to the rear end of the small diameter portion 36. The E-ring 90 restricts the axial movement of the support bush 60.

[0019] Grip 40 The grip 40 is a substantially cylindrical member that houses the cavity cup 30 therein. A hook-shaped portion 41 that is hook-shaped in cross section is formed on the inner peripheral surface of the grip 40. The hook-shaped portion 41 is formed around the entire circumference of the inner peripheral surface and has an annular shape. A front protrusion 64 of a support bush 60 (described later) is received and held in the hook-shaped portion 41.

[0020] ●Shock Mount 50 As shown in Fig. 1, the shock mount 50 is a substantially annular member interposed between the cavity cup 30 and the grip 40. The shock mount 50 has elasticity and is formed from an elastic material such as various elastomers or rubber materials. As shown in Figs. 1 and 6, the outer edge of the shock mount 50, i.e., the outer peripheral surface of the outer wall portion 52, faces the inner wall of the grip 40. The shock mount 50 is a first example of a buffer member.

[0021] The shock mount 50 is symmetrical in the axial front-rear direction. Since the shock mount 50 is symmetrical, the structure is simple and easy to manufacture and assemble.

[0022] As shown in FIGS. 1 to 5, the shock mount 50 mainly includes an inner wall portion 51, an outer wall portion 52, a connecting portion 53, a recess 54, a plurality of ribs 55, and a plurality of holes 56.

[0023] As shown in Fig. 4 in particular, the inner wall portion 51 of the shock mount 50 is an annular portion that constitutes the inner peripheral surface of the shock mount 50. Moreover, the outer wall portion 52 is an annular portion that constitutes the outer peripheral surface of the shock mount 50. As shown in Fig. 5 in particular, in this embodiment, the axial width of the outer wall portion 52 is smaller than that of the inner wall portion 51.

[0024] 4 is a substantially circular ring that connects the inner wall portion 51 and the outer wall portion 52 to form a substantially concentric circle. The connecting portion 53 is a flat ring that is thinner than the inner wall portion 51 and the outer wall portion 52. As a result, a circular recess 54 with the connecting portion 53 as its bottom is formed between the inner wall portion 51 and the outer wall portion 52.

[0025] 3 and 4, a plurality of ribs 55 are formed on the outer wall portion 52 of the shock mount 50. The plurality of ribs 55 are formed at approximately equal intervals on a circumference. The plurality of ribs 55 come into contact with the inner wall of the grip 40 in response to vibration and elastically deform, thereby absorbing the vibration of the grip 40.

[0026] Here, a microphone 100 of the related art will be described with reference to Figures 16 to 18. The microphone 100 of the related art mainly includes a head case (not shown), a microphone unit 120, a cavity cup 130, a grip 140, a shock mount 150, a support bush 160, a holder 170, and a grip housing (not shown).

[0027] 17, a shock mount 150 in the related art is a substantially annular member, and has a smooth outer edge 152. Therefore, as shown in FIG.

[0028] 6, in microphone 1 according to the present invention, rib 55 of shock mount 50 contacts the inner wall of grip 40, and therefore the contact area with grip 40 is smaller than that of shock mount 150 in the related art. Therefore, shock mount 50 according to the present invention can reduce the transmission of noise caused by friction with grip 40.

[0029] Furthermore, the shock mount 50 receives vibrations of the grip 40 over a smaller area than the shock mount 150, and therefore deforms more easily than the shock mount 150. Therefore, the shock mount 50 of the present invention can adequately absorb vibrations of the grip 40.

[0030] As shown in FIG. 3 and FIG. 4, the multiple ribs 55 include at least multiple first ribs 55a and multiple second ribs 55b with different protruding amounts. More specifically, the second ribs 55b have a smaller protruding amount than the first ribs 55a. The first ribs 55a and the second ribs 55b are alternately arranged along the circumference of the shock mount 50. According to this configuration, when the grip 40 does not vibrate or vibrates only slightly, at least one of the first ribs 55a abuts on the inner wall of the grip 40. When a large impact is applied to the grip 40 and the grip 40 vibrates greatly, the first rib 55a is pressed and crushed. Then, both the second rib 55b and the first rib 55a abut on the inner wall of the grip 40 and receive the vibration of the grip 40.

[0031] That is, according to the configuration in which the first rib 55a and the second rib 55b, which have different protrusion amounts, receive vibrations in stages, even if a large shock is applied to the microphone 1, the shock can be absorbed and the transmission of vibration noise can be reduced. Also, the shock mount 50 of the present invention differs from the shock mount 150 of the related art only in the shape of the details and can be manufactured in the same process, so that the transmission of vibration noise can be reduced without increasing the manufacturing cost. Note that, although the protrusion amount of the rib 55 is two types in this embodiment, it may be three or more types.

[0032] 5 and 6, the protruding surfaces of the first ribs 55a are convexly curved. This configuration reduces the contact area between the first ribs 55a and the inner wall of the grip 40 compared to a configuration in which the protruding surfaces of the first ribs 55a are flat, further reducing vibration noise caused by friction. In addition, the configuration in which the protruding surfaces of the first ribs 55a are curved makes it easier to insert the shock mount 50 into the grip 40 during the assembly process.

[0033] The second ribs 55b are each substantially rectangular parallelepiped, and the protruding surfaces of the second ribs 55b are flat. This configuration is easier to manufacture than a configuration in which the protruding surfaces of all the ribs 55 are curved.

[0034] In this embodiment, the protruding surface of the first rib 55a, which has a relatively large protruding amount, is a convex curved surface, and the protruding surface of the second rib 55b, which has a relatively small protruding amount, is flat. However, the technical scope of the present invention is not limited to this, and the protruding surface of a rib with a relatively large protruding amount may be flat, or the protruding surface of a rib with a relatively small protruding amount may be a convex curved surface. In addition, the protruding amount and the shape of the protruding surface do not have to correspond to each other.

[0035] 4, 7, and 8, the shock mount 50 has a plurality of holes 56 penetrating in the axial direction in the connecting portion 53. The plurality of holes 56 are formed, for example, at equal intervals on the same circumference. The plurality of holes 56 can reduce the radial elasticity of the shock mount 50, making it easier to deform. In turn, the shock mount 50 can absorb vibrations of the grip 40, thereby suppressing transmission of the vibrations to the microphone unit 20.

[0036] The holes 56 may be formed at positions corresponding to the ribs 55. In particular, the holes 56 may be formed at positions corresponding to the first rib 55a. With this configuration, the holes 56 reduce the elasticity of the shock mount 50 near the rib 55. Furthermore, the shock mount 50 can easily deform in response to the resistance from the grip 40 applied via the rib 55, so that the noise generated by the vibration of the grip 40 can be further reduced.

[0037] ●Support bush 60 1, the support bush 60 is a disk-shaped member interposed between the cavity cup 30 and the grip 40. An outer wall portion 63 of the support bush 60 faces the inner wall of the grip 40. The support bush 60 is a second example of a cushioning member.

[0038] 9 and 10, the support bush 60 mainly includes a first through hole 61, a second through hole 62, an outer wall portion 63, a front convex portion 64, and a rear convex portion 65. Note that the support bush 60 in this embodiment is symmetrical in the axial front-rear direction in an assembled state, and the front convex portion 64 and the rear convex portion 65 are conveniently named according to their orientation in the assembled state. The support bush 60 having a symmetrical configuration facilitates manufacturing and assembly.

[0039] The first through hole 61 is formed in approximately the center in the axial direction of the support bush 60. As shown in Fig. 1, the small diameter portion 36 of the cavity cup 30 is inserted into the first through hole 61. That is, the inner wall of the first through hole 61 faces the outer wall of the small diameter portion 36. The diameter of the small diameter portion 36 may be smaller than the first through hole 61, so that a gap S30 is generated between the cavity cup 30 and the small diameter portion 36.

[0040] The second through holes 62 are holes that are provided concentrically with the first through hole 61 and penetrate in the axial direction. The second through holes 62 are provided at approximately equal intervals along the circumferential direction of the support bush 60. In this embodiment, there are six second through holes 62, which is different from the number of the ribs 61a, but may be the same.

[0041] As shown in FIG. 1, the second through-hole 62 forms a flow path that communicates the space S31 between the cavity cup 30 and the grip 40 with the space S70 inside the holder 70.

[0042] As shown in FIG. 9(a), a plurality of ribs 61a protruding inward in the circumferential direction are disposed on the inner wall of the first through hole 61. In this embodiment, there are six ribs 61a, but the number is arbitrary. The ribs 61a face the small diameter portion 36. Therefore, when the support bush 60 abuts against the cavity cup 30, the ribs 61a abut against the small diameter portion 36. With this configuration, the contact area between the support bush 60 and the cavity cup 30 is smaller than that of the microphone 100 of the related art, so that the transmission of vibration noise via the support bush 60 can be reduced.

[0043] As shown in FIG. 9(a) and FIG. 9(b), a plurality of ribs 61b, 61c are disposed around the front side and rear side of the first through hole 61, protruding in the axial direction. In the figure, the plurality of ribs 61b, 61c are disposed at positions continuous with the rib 61a, but any of the ribs 61a, 61b, and 61c may be disposed at positions different from each other in the circumferential direction. The plurality of ribs 61b disposed on the front side of the support bush 60 faces the lower end of the truncated cone portion 35 of the cavity cup 30. The plurality of ribs 61c disposed on the rear side of the support bush 60 faces the E-ring 90. Therefore, even when vibration is applied in the axial direction, the rib 61b and the cavity cup 30, or the rib 61c and the E-ring 90 come into contact with each other. That is, according to the configuration of the ribs 61b and 61c, the contact area can be made smaller than that of a configuration in which the front side and rear side of the first through hole 61 are flat. This in turn reduces the transmission of vibration noise caused by friction.

[0044] 9(a), a plurality of ribs 63a protruding outward in the circumferential direction are disposed on the outer wall portion 63 of the support bush 60. In this embodiment, the number of ribs 63a is eight, but the number is arbitrary.

[0045] 10 and 11, the rib 63a faces the inner peripheral surface of the grip 40. Therefore, when the support bush 60 abuts against the grip 40, the rib 63a abuts against the inner peripheral surface of the grip 40. With this configuration, the contact area between the support bush 60 and the grip 40 is smaller than when the outer wall portion 63 is flat, so that the transmission of vibration noise via the support bush 60 can be reduced.

[0046] The front convex portion 64 protrudes toward the front end side on the front surface of the support bush 60. The front convex portion 64 is formed in an annular shape around the entire circumference of the support bush 60. The front convex portion 64 is held in a space S (see Figs. 1 and 13) that is partially partitioned by the hook-shaped portion 41 of the grip 40. The detailed configuration of the space S will be described later.

[0047] A rib 64aa is disposed on the inner surface 64a of the front convex portion 64. A rib 64ba protruding in the axial direction is disposed on the protruding surface 64b of the front convex portion 64. That is, the rib 64aa and the rib 64ba face the inner surface of the hook-shaped portion 41. Therefore, the rib 64aa abuts against the inner surface of the hook-shaped portion 41 for the radial component of the vibration of the grip 40. The rib 64ba abuts against the inner surface of the hook-shaped portion 41 for the axial component of the vibration of the grip 40. This configuration also reduces the contact area between the support bush 60 and the hook-shaped portion 41, thereby reducing the rubbing noise.

[0048] As shown in Fig. 9(b), the rear convex portion 65 protrudes toward the rear end side on the rear surface of the support bush 60. The rear convex portion 65 is formed in an annular shape around the entire circumference of the support bush 60. A rib 65aa is disposed on an inner surface 65a of the rear convex portion 65. In addition, a rib 65ba protruding in the axial direction is disposed on a protruding surface 65b of the rear convex portion 65.

[0049] As shown in Fig. 13, an inner surface 65a of the rear convex portion 65 faces a second small diameter portion 73 of the holder 70, which will be described later. Also, a protruding surface 65b of the rear convex portion 65 faces a shoulder portion 74 of the holder 70. Therefore, the rib 65aa abuts against the second small diameter portion 73 for the radial component of the vibration of the grip 40. Also, the rib 65ba abuts against the shoulder portion 74 for the axial component of the vibration of the grip 40. This configuration also reduces the contact area between the support bush 60 and the holder 70, and reduces the rubbing noise.

[0050] Holder 70 1, the holder 70 is a cylindrical member that engages with the rear end of the grip 40. The holder 70 mainly includes a base portion 71, a first small diameter portion 72, a second small diameter portion 73, and a shoulder portion 74.

[0051] The base 71 is a cylindrical portion that forms the outer edge of the holder 70 .

[0052] The first small diameter portion 72 is a cylindrical portion whose outer diameter is smaller than the base portion 71, and is formed at the front end portion of the holder 70. The second small diameter portion 73 is a cylindrical portion whose outer diameter is smaller than the first small diameter portion 72, and is formed at the front end portion of the first small diameter portion 72. An annular shoulder portion 74 is formed between the first small diameter portion 72 and the second small diameter portion 73 due to the difference in their outer diameters.

[0053] A circular space S is defined by the hook-shaped portion 41, the inner peripheral surface of the grip 40, the outer peripheral surface of the second small diameter portion 73, and the shoulder portion 74. The outer wall portion 63 of the support bush 60 is accommodated in this space S, and as a result, the support bush 60 is held floating in the space S. That is, the support bush 60 is not fixed to any of the cavity cup 30, the grip 40, and the holder 70. The outer wall portion 63 of the support bush 60 is slightly smaller than the volume of the space S. That is, the support bush 60 may have a gap between itself and the inner wall of the space S. As a result, the outer wall portion 63 moves within the space S according to the direction of the force due to gravity or vibration, and appropriately abuts against any of the hook-shaped portion 41, the inner peripheral surface of the grip 40, the outer peripheral surface of the second small diameter portion 73, and the shoulder portion 74 that constitute the inner wall of the space S.

[0054] Here, the structures of microphones 100 and 200 of the related art will be described with reference to FIGS.

[0055] 19 and 20, in the support bush 160 included in the microphone 100 of the related art, the inner circumferential surface of the first through hole 161 and the outer wall 163 are flat. As a result, the outer wall 163 and the grip 140 are in surface contact. Similarly, the first through hole 161 of the support bush 160 and the cavity cup 30 are also in surface contact. In addition, as shown in FIG. 20, the outer wall 163 and the grip 140 are bonded with an adhesive 166.

[0056] 21 mainly includes a microphone unit 220, a cavity cup 230, a grip 240, and a support bush 260. Here, the grip 240 and the support bush 260 are firmly connected by a screw 290.

[0057] According to the configuration of the microphones 100, 200 of the related art, the cavity cups 130 (see FIG. 16), 230 are stably held in the grips 140, 240 even against a strong impact. On the other hand, there is a risk that the vibrations of the grips 140, 240 are transmitted to the support bushes 160, 260 and picked up by the microphone units 120, 220 as vibration noise.

[0058] In contrast to such a configuration of the related art, in the microphone 1 according to the present invention, the support bush 60 is not bonded to either the cavity cup 30 or the grip 40, and is held floatingly. Therefore, the support bush 60 abuts against or moves away from each inner wall constituting the space S in response to vibration of the grip 40. That is, the support bush 60 does not excessively transmit the vibration of the grip 40 to the microphone unit 20, and can reduce vibration noise collected by the microphone unit 20. In addition, since the support bush 60 is held floatingly within the space S, it can abut against the inner wall of the space S in response to vibration, thereby appropriately absorbing the vibration.

[0059] ●Grip housing 80 The grip housing 80 is a cylindrical housing that covers the outer periphery of the grip 40. The grip housing 80 is a member that is directly held by the user, and receives shocks and vibrations that accompany use. The grip housing 80 is connected to the head case 10 and the grip 40 via the fixing member 12.

[0060] Frequency response characteristics Figures 14 and 15 show frequency response characteristics of sounds picked up by the microphone 1 when the grip housing of the microphone 1 is rubbed. In Figures 14 and 15, the horizontal axis shows frequency, and the vertical axis shows output level (dBV).

[0061] 14 is a graph showing the frequency response characteristics of the microphone 1 according to the present invention by a solid line and the frequency response characteristics of a microphone 100 equipped with a shock mount 150 of the related art by a dashed line. According to the figure, the sound pressure of vibration noise picked up by the microphone 1 in the frequency band of 150 Hz to 350 Hz is smaller than that of the microphone 100. In other words, the shock mount 50 equipped in the microphone 1 according to the present invention can suppress the pickup of vibration noise transmitted from the grip housing 80.

[0062] 15 is a graph showing the frequency response characteristics of the microphone 1 according to the present invention by a solid line and the frequency response characteristics of a microphone 200 equipped with a support bush 260 of the related art by a dashed line. According to the figure, the sound pressure of vibration noise picked up by the microphone 1 in the frequency band of 150 Hz to 400 Hz is smaller than that of the microphone 100. In other words, the structure of the support bush 60 equipped in the microphone 1 according to the present invention makes it possible to suppress the pickup of vibration noise transmitted from the grip housing 80.

[0063] According to the embodiment described above, it is possible to provide a microphone that transmits less noise from the housing. Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0064] 1: Microphone 10: Head case 20: Microphone unit 30: Cavity cup (unit holding member) 31: Unit storage section 40: Grip 50: Shock mount (buffer, second buffer) 55: Rib 55a: First rib 55b: 2nd rib 56 :hole 60: Support bush (buffer material) 61: First through hole 61a: Rib 62: Second through hole 63: External wall 63a : Rib 64: Front convex part (convex part) 64a: Inner surface 64aa: Rib 64b:Protruding surface 64ba: Rib 65: Rear convex part (convex part) 65a: Inside surface 65aa: Rib 65b:Protruding surface 65ba: Rib 70: Holder 71: Base 72: 1st small diameter section 73:Second small diameter section 74:Shoulder 80: Grip housing 90: E-Ring S: Space 100: Microphone 150: Shock mount 160: Support bush 200: Microphone 240: Grip 250: Shock mount 260: Support bush 290: Screw

Claims

[Claim 1] A microphone unit; A unit holding member for holding the microphone unit; A cylindrical grip that houses the unit holding member therein; a support bush interposed between the unit holding member and the grip; Equipped with The support bush is held in a floating manner in a space at least a portion of which is defined by the grip, The support bush has a front convex portion protruding toward a front end side at a radially outer edge portion, A hook-shaped portion having a hook shape in a cross-sectional view is formed on the inner peripheral surface of the grip, the hook-shaped portion forms a part of the space, and the front convex portion is held inside the hook-shaped portion. Microphone.

Images