Shaft position adjustment mechanism and microphone device

Abstract

To provide a shaft position adjustment mechanism and a microphone device capable of adjusting a position of a microphone support member supporting a microphone unit with a simple operation.SOLUTION: In a microphone device, a shaft position adjustment mechanism includes a microphone support member 81 that supports a microphone unit and has a rod-shaped shaft part 83 in which a plurality of grooves 83a are formed at predetermined intervals, a holding member (a base member 21 and a cover member 31) in which a shaft holding part 35 that holds the shaft part in a movable state along an extending direction of the shaft part is formed, and a lock mechanism 40 that fixes a position of a shaft part in the shaft holding part. The lock mechanism includes a slider member 41 which is provided so as to be movable in an advancing and retreating direction with respect to the shaft part, and in which a claw which enters a groove is formed, and a biasing member 46 which presses the slider member toward the shaft part side. A finger hook part 45 which is operated by a user in order to move the slider member to a position where the claw is removed from the groove 83a is formed in the slider member.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an axis position adjustment mechanism and a microphone device. [Background technology]

[0002] Conventionally, a headset-type acoustic device has been known that has a headband that is worn on the user's head and a sound-collecting microphone (see, for example, Patent Document 1). The sound-collecting microphone is fixed to an arm member, and this arm member is held by a predetermined holding member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-331970 Summary of the Invention [Problem to be solved by the invention]

[0004] When the above-described device is worn on the user's head, it may be preferable to adjust the position of the arm member so that the position of the microphone unit with a built-in sound-collecting microphone can be changed depending on the user. However, with conventional configurations, there is a problem in that the position of the arm member cannot be adjusted with a simple operation.

[0005] Therefore, the present invention has been made in consideration of these points, and aims to provide an axis position adjustment mechanism and a microphone device that can adjust the position of a microphone support member that supports a microphone unit with a simple operation. [Means for solving the problem]

[0006] A microphone support member supports a microphone unit of one form of the present invention and has a rod-shaped shaft portion with a plurality of grooves formed at predetermined intervals; a holding member formed with a shaft holding portion that holds the shaft portion in a state where it can move along the extension direction of the shaft portion; and a locking mechanism that fixes the position of the shaft portion in the shaft holding portion, wherein the locking mechanism is movable in directions advancing and retreating relative to the shaft portion and has a slider member formed with a claw that fits into the groove, and a biasing member that presses the slider member toward the shaft portion, and the slider member is formed with a finger hook portion that is operated by a user to move the slider member to a position where the claw is released from the groove.

[0007] The biasing member may be a torsion spring, and the torsion spring may have a winding portion and an arm portion extending from the winding portion, and the arm portion may press the slider member toward the shaft portion.

[0008] The holding member has a base member having a receiving portion formed thereon that receives a portion of the shaft portion, and a cover member that is attached to the base member, and the base member may have a guide rib that is formed to extend in the extension direction of the shaft portion at the receiving portion and is inserted into a guide groove formed in the shaft portion to prevent the shaft portion from rotating around the central axis of the shaft portion and to guide the movement of the shaft portion.

[0009] The holding member may have a base member having a receiving portion formed thereon to receive a portion of the shaft portion, and a cover member attached to the base member, and the finger hook portion may be a protrusion that is arranged to be positioned inside an opening formed in the cover member.

[0010] A microphone device according to one embodiment of the present invention comprises a headband unit to be worn on the user's head and the axial position adjustment mechanism described above, wherein the headband unit has a contact pad portion that abuts against the side of the user's head when the headband unit is worn, and the contact pad portion is provided with the retaining member and the locking mechanism. [Effects of the Invention]

[0011] The present invention has the effect of providing an axis position adjustment mechanism and a microphone device that can adjust the position of a microphone support member that supports a microphone unit with a simple operation. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a perspective view of the microphone device. [Figure 2] FIG. 1 illustrates a microphone device. [Figure 3] FIG. 2 is a side view of the microphone device. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is an exploded perspective view showing a microphone support member and a base member. [Figure 7] 10 is an exploded perspective view showing the configuration of the microphone support member and the left contact pad portion. FIG. [Figure 8] FIG. 4 is a cross-sectional view showing a locking mechanism and its surrounding structure. [Figure 9] FIG. 2 is a perspective view of a slider member and a biasing member. [Figure 10] FIG. 4 is a perspective view showing the inside of a shaft holding portion of the cover member. [Figure 11] FIG. 4 is a view of the cover member as seen from the inside. [Figure 12] 10 is a schematic diagram showing the shape of a shaft holding portion in a cross-sectional view perpendicular to the shaft portion of the microphone support member. FIG. [Figure 13] 10 is a diagram illustrating the positional relationship between a protrusion and a shaft in an assembled state. FIG. [Figure 14] 12 is a diagram schematically showing the cross-sectional shape of a protrusion in the AA diagram of FIG. 11. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Fig. 1 is a perspective view of the microphone device. Fig. 2 is a diagram showing the microphone device. Fig. 2(a) is a plan view, Fig. 2(b) is a front view, and Fig. 3 is a side view of the microphone device.

[0014] As shown in FIG. 1, the microphone device S1 includes a headband unit 10 and a microphone section 80.

[0015] The headband unit 10 is a part that is worn on the user's head, and includes a head wire 11, a right contact pad portion 15, and a left contact pad portion 20.

[0016] The head wire 11 is an elastic wire formed in a substantially arc shape. In the microphone device S1 of this embodiment, the head wire 11 is provided in a direction that extends from the user's temples along the back of the head when the microphone device S1 is worn on the user's head. Note that the present invention is not limited to this configuration, and the head wire 11 may be configured to extend from the temples to the top of the head.

[0017] The right contact pad portion 15 is provided at one end of the head wire 11. The right contact pad portion 15 has a flat shape. The right contact pad portion 15 is the portion that comes into contact with the right side of the user's head.

[0018] The left contact pad portion 20 is provided at the other end of the head wire 11. Like the right contact pad portion 15, the left contact pad portion 20 also has a flat shape. The left contact pad portion 20 is the portion that comes into contact with the left side of the user's head. The left contact pad portion 20 supports the microphone portion 80.

[0019] 1, the microphone section 80 has a microphone support member 81 and a microphone unit 100. In this embodiment, the microphone section 80 is supported by the left contact pad section 20, but the microphone section 80 may also be supported by the right contact pad section 15.

[0020] The microphone support member 81 is formed to extend from the headband unit 10. The microphone support member 81 is, for example, in the shape of a round rod, and has a portion made of a deformable flexible material so that the orientation of the microphone can be changed. Specifically, when the microphone device S1 is worn by a user, the microphone support member 81 is supported by the left contact pad portion 20 in an orientation such that it extends from the headband unit 10 toward the user's mouth.

[0021] The microphone unit 100 is provided on the microphone support member 81. The microphone unit 100 may be provided at any position on the microphone support member 81, but in this example, it is provided at an end of the microphone support member 81.

[0022] (Axis position adjustment mechanism) The left contact pad portion 20 of the microphone device S1 is provided with an axis position adjustment mechanism for adjusting the position of the microphone support member 81, and an axis holding mechanism for maintaining a sense of friction when moving the microphone support member 81 (described in detail later). Note that in the present invention, it is sufficient that an axis position adjustment mechanism is provided, and the axis holding mechanism for maintaining a sense of friction is not an essential component.

[0023] Fig. 4 is a perspective view of the left contact pad portion. In Fig. 4, the slider member disposed inside is visible through the cover member. Fig. 5 is an exploded perspective view of the left contact pad portion. Fig. 6 is an exploded perspective view showing the microphone support member and base member.

[0024] In the microphone device S1 of this embodiment, the microphone support member 81 is configured so that the position thereof relative to the left contact pad portion 20 can be adjusted in the direction indicated by arrow A in Fig. 4. Specifically, the microphone support member 81 is configured so that the length of its projection from the left contact pad portion 20 can be changed. The axis position adjustment mechanism for adjusting the position of the microphone support member 81 in this manner will be described below.

[0025] 4 and 5, the axis position adjustment mechanism is made up of a microphone support member 81, a base member 21, a cover member 31, and a locking mechanism 40. Note that the axis position adjustment mechanism does not have to be made up of only the above elements, and may include other elements.

[0026] As described above, the microphone support member 81 is a round bar-shaped member, and specifically includes a shaft portion 83 and a microphone arm 84. As shown in FIG. 5, the shaft portion 83 is round bar-shaped, and has a plurality of grooves 83a formed on its outer circumferential surface at predetermined intervals. The intervals may be uniform or may be non-uniform. The shaft portion 83 is made of metal, for example.

[0027] The microphone arm 84 is a round rod-shaped flexible arm, and is connected to the shaft portion 83. The microphone unit 100 described above is attached to the tip of the microphone arm 84.

[0028] The base member 21 and the cover member 31 constitute a holding member in the present invention. When the base member 21 and the cover member 31 are joined together, they hold the shaft portion 83 of the microphone support member 81 in a state in which the shaft portion 83 can move in the extension direction. The base member 21 and the cover member 31 can be made of any material, but in this embodiment they are made of resin, for example.

[0029] The base member 21 is a member formed in the shape of a flat disk. The base member 21 has a first surface 21A and a second surface 21B. The second surface 21B is the surface that faces the side of the user's head when the microphone device S1 is worn on the user's head. A sheet-like elastic body 29 is provided on the second surface 21B to improve wearability.

[0030] The first surface 21A is the surface opposite to the second surface 21B. As shown in Fig. 6, the first surface 21A is formed with a receiving portion 22 that receives a portion of the shaft portion 83. Specifically, the receiving portion 22 has a concave shape that receives approximately half of the outer periphery of the shaft portion 83. A guide rib 22g is formed inside the receiving portion 22.

[0031] The guide rib 22g is a linear rib that extends in the extension direction of the shaft portion 83. The guide rib 22g has the function of preventing the shaft portion 83 from rotating around its central axis and guiding the movement of the shaft portion 83 in its extension direction. The guide rib 22g also has the function of positioning the shaft portion 83 at a predetermined position within the shaft holder 35 in an assembled state. In other words, the guide rib 22g determines the position of the shaft portion 83 so that even if the slider member 41 pushes the shaft portion 83 from the side, the shaft portion 83 will not move.

[0032] Fig. 7 is an exploded perspective view showing the configuration of the microphone support member and the left contact pad portion. Fig. 8 is a cross-sectional view showing the locking mechanism and its surrounding structure. As shown in Fig. 7, the shaft portion 83 has a guide groove 83d formed so as to extend in the extension direction of the shaft portion 83. The guide groove 83d is a groove formed in a straight line. The guide rib 22g is inserted into this guide groove 83d (Fig. 8).

[0033] The cover member 31 is a member fixed to the base member 21. Specifically, the cover member 31 is fixed to the base member 21 in a state in which the shaft portion 83 of the microphone support member 81 is disposed between the base member 21 and the cover member 31. The cover member 31 has a cover main body 32 and a shaft holding portion 35.

[0034] 5, in this example, the cover main body 32 has a substantially circular outline corresponding to the outline of the base member 21. A plurality of screw holes 32h are formed in the cover main body 32. The screw holes 32h extend in the thickness direction of the cover main body 32.

[0035] A fixing screw Sw (FIG. 4) is passed through this screw hole 32h. The fixing screw Sw is inserted into the base member 21 in the thickness direction of the base member 21 and screwed into the base member 21. In the present embodiment, the fixing screw Sw is illustrated as an example, but the fixing device that fixes the cover member 31 to the base member 21 is not limited to a fixing screw and may be a fixing pin or the like. In one embodiment, it is preferable that the fixing device is inserted in the thickness direction of the base member 21 so that the shaft portion 83 can be well held between the cover member 31 and the base member 21. As a result, when the fixing device is fastened, the shaft portion 83 is sandwiched and well held between the base member 21 and the cover member 31.

[0036] In addition to fixing screws and fixing pins, the cover member 31 may be joined to the base member 21 by, for example, a claw extending from the cover member 31 toward the base member 21 engaging with a part of the base member 21.

[0037] As shown in FIGS. 4 and 5 , an opening 32a is formed in the cover body 32. The opening 32a exposes a finger hook (described in detail later) of a slider member of the locking mechanism. The opening 32a is formed relatively small compared to the overall area of ​​the cover body 32 when viewed in the thickness direction. Although not limited to this, the area of ​​the opening 32a is 1 / 5 or less of the area of ​​the cover body 32 projected in the thickness direction. The position of the shaft 83 is not necessarily changed frequently. However, if the opening 32a and the finger hook therein are formed large, a user may accidentally touch them, potentially unintentionally changing the position of the microphone support member 81. In contrast, according to the configuration of this embodiment, the opening 32a and the finger hook therein are formed relatively small, making such unintentional changes to the position of the microphone support member 81 less likely to occur. Note that the opening 32a being formed relatively small is merely an example, and the opening 32a may be formed larger, exceeding 1 / 5 of the area of ​​the cover body 32 projected in the thickness direction.

[0038] The shaft holding portion 35 is a portion that holds the shaft portion 83 of the microphone support member 81. The shaft holding portion 35 is formed in a shape that protrudes from the cover body 32 in the thickness direction of the cover body 32. A structure is provided inside the shaft holding portion 35 to maintain a sense of friction when the microphone support member 81 moves, even when the microphone device S1 is used over a long period of time and the position of the microphone support member 81 is repeatedly adjusted. This will be described later with reference to other drawings.

[0039] (locking mechanism) Locking mechanism 40 is a mechanism for fixing the position of shaft portion 83 of microphone support member 81 in shaft holding portion 35. As shown in FIG. 5, locking mechanism 40 has a slider member 41 and a biasing member 46.

[0040] 9 is a perspective view of the slider member and the biasing member. The slider member 41 has a long, thin plate-like shape. Specifically, the slider member 41 has a main body portion 42, a claw 43, a finger hook portion 45, and a spring receiving portion 47.

[0041] The claw 43 is a portion that fits into one of the multiple grooves 83a (FIGS. 5 and 6) of the shaft portion 83. As an example, the claw 43 has a width that is approximately the same as the width of the groove 83a. The claw 43 is formed so as to protrude from the main body portion 42.

[0042] The finger hook 45 is formed to protrude from the upper surface 42a of the main body 42. As will be described later, the finger hook 45 is a portion that is operated by the user to move the slider member 41 to a position where the claw 43 is released from the groove 83a. For example, the finger hook 45 may be formed in a shape that does not protrude from the upper surface of the cover member 31 when the cover member 31 is attached to the base member 21, or may be formed in a shape that protrudes.

[0043] As will be described later, the spring receiving portion 47 (FIG. 9) is a portion that receives a part of the biasing member 46. The spring receiving portion 47 is formed in a concave shape that is carved in the thickness direction of the slider member 41 from the upper surface 42a.

[0044] In this embodiment, the biasing member 46 is a torsion spring, for example. Specifically, the biasing member 46 has a winding portion 46a, a first arm portion 46b, and a second arm portion 46c.

[0045] 5 and 6 again. The slider member 41 is disposed in a guide recess 24 formed in the base member 21. The guide recess 24 is a groove formed to extend in a direction perpendicular to the extension direction of the shaft portion 83. Within the guide recess 24, the slider member 41 is provided so as to be movable in directions advancing and retreating relative to the shaft portion 83.

[0046] The biasing member 46 is disposed in a spring receiving portion 27 formed in the base member 21. The spring receiving portion 27 is a recess formed by being carved from the first surface 21A. The biasing member 46 is a member that presses the slider member 41 toward the shaft portion 83. Specifically, the biasing member 46 is provided on the base member 21 in an orientation such that the extension direction of the central axis of the winding portion 46a (FIG. 9) is parallel to the thickness direction of the base member 21. Specifically, the second arm portion 46c of the biasing member 46 is accommodated in the spring receiving portion 27. Meanwhile, the first arm portion 46b of the biasing member 46 extends outward from within the spring receiving portion 27, with its tip portion inserted into the spring receiving portion 47 of the slider member 41.

[0047] In the state shown in Fig. 5, the elastic force of the biasing member 46 causes the first arm 46b to press the slider member 41 toward the shaft 83. When the slider member 41 is pressed toward the shaft 83, the claw 43 (Fig. 6) enters the groove 83a of the shaft 83, thereby fixing the position of the shaft 83. To release the lock, the user operates the finger hook 45 and moves the slider member 41 to a position where the claw 43 is released from the groove 83a.

[0048] For example, an expandable coil spring may be used as the biasing member 46. However, when a coil spring is disposed in a relatively small structural portion such as the left contact pad portion 20 of this embodiment, the size of the left contact pad portion 20 may become large. For example, in a configuration in which the coil spring is disposed in region C of FIG. 6, it may be necessary to increase the diameter of the left contact pad portion 20 to ensure a sufficient length for the coil spring.

[0049] In this regard, when the biasing member 46 is a torsion spring, the biasing member 46 and its surrounding structure can be configured compactly, as shown in Fig. 5. In particular, in this embodiment, the first arm 46b is arranged to fit inside the spring receiving portion 47 of the slider member 41, and therefore, the thickness of the left contact pad portion 20 can be reduced compared to, for example, a structure in which the first arm 46b is hooked onto a spring hook formed to protrude from the upper surface 42a.

[0050] (Effect of the axis position adjustment mechanism of the microphone device S1) According to the shaft position adjustment mechanism of the microphone device S1 described above, slider member 41 and biasing member 46 are provided as locking mechanism 40, and the user can release the lock and adjust the position of shaft portion 83 by operating finger hook 45 of slider member 41 to slide slider member 41. With this configuration, the position of microphone support member 81 can be adjusted with a simple operation compared to a configuration in which it is necessary to loosen a predetermined screw or remove cover member 31 to adjust the position of shaft portion 83, for example.

[0051] Furthermore, when the biasing member 46 is a torsion spring, there is an advantage that the lock mechanism 40 can be easily made smaller than when a coil spring is used.

[0052] Furthermore, with the configuration in which guide rib 22g prevents rotation of shaft portion 83 and guides the moving direction of shaft portion 83, it is possible to position shaft portion 83 at a predetermined position within shaft holding portion 35 even in a configuration in which a biasing force from biasing member 46 is applied to shaft portion 83 as in this embodiment. In other words, shaft portion 83 is prevented from being positioned at an offset position within shaft holding portion 35.

[0053] Furthermore, since the finger hook portion 45 is configured to be located within the opening 32a of the cover member 31, the user is prevented from unintentionally touching the finger hook portion 45, and the lock is not accidentally released, causing the position of the shaft portion 83 to shift.

[0054] (Shaft holding structure) As described above, in the microphone device S1 of this embodiment, the microphone support member 81 is configured to be slidable in the extension direction of the shaft portion 83. In a configuration in which the rod-shaped shaft portion 83 is held by a substantially cylindrical structure such as the shaft holding portion 35, it is expected that the portion inside the shaft holding portion 35 on which the shaft portion 83 slides will wear. As a result, a problem may arise in which the sense of friction when moving the shaft portion 83 gradually decreases. In this case, there is also a risk that the microphone support member 81 may no longer be held stably.

[0055] Therefore, in this embodiment, the following shaft holding structure is provided. Fig. 10 is a perspective view showing the inside of the shaft holding portion of the cover member. Fig. 11 is a view of the cover member as seen from the inside. Fig. 12 is a schematic diagram showing the shape of the shaft holding portion in a cross section perpendicular to the shaft portion of the microphone support member.

[0056] As shown in FIG. 10, the shaft holding portion 35 of the cover member 31 has a peripheral wall portion 37 and a raised portion 39.

[0057] The peripheral wall 37 is a portion that receives the shaft 83 of the microphone support member 81. A first inner peripheral surface 37a is formed on the inside of the peripheral wall 37. As shown in the cross-sectional view of FIG. 12, the first inner peripheral surface 37a includes a portion that is formed in an arc shape. The first inner peripheral surface 37a has a radius of curvature d1. This radius of curvature d1 is the same as or slightly larger than the radius of the shaft 83.

[0058] As shown in FIGS. 10 and 12 , the raised portion 39 is a portion formed to protrude radially inward from the first inner circumferential surface 37a. The raised portion 39 includes a second inner circumferential surface 39a having a radius of curvature d2. The radius of curvature d2 is larger than the radius of curvature d1 of the first inner circumferential surface 37a. The center O2 of a circle corresponding to the arc of the raised portion 39 is located on a center line CL passing through the center O1 of the circle corresponding to the arc of the first inner circumferential surface 37a, and the center O2 is offset from the center O1 to a side farther from the raised portion 39. In this embodiment, the radius of curvature d2 is larger than both the radius of the shaft portion 83 and the radius of curvature d1 of the first inner circumferential surface 37a. As shown in FIG. 12 , the range in which the raised portion 39 is formed corresponds to a sectorial arc having a central angle α with respect to the center O1. The angle α is, for example, any angle within the range of 60° to 120° (30° to 60° on one side from the center line CL). By forming the raised portion 39 within this range, the function of the raised portion 39 can be satisfactorily exhibited.

[0059] 13A and 13B are diagrams illustrating the positional relationship between the protrusion and the shaft in an assembled state. As shown in Fig. 13A, in an assembled state in which the shaft 83 is received in the shaft holder 35, the outer peripheral surface of the shaft 83 abuts against the second inner peripheral surface 39a of the protrusion 39. Specifically, as described above, since the cover member 31 is fixed to the base member 21 by the fixing screws Sw, the cover member 31 is pressed against the base member 21, and the shaft 83 is pressed against the second inner peripheral surface 39a (see arrow B).

[0060] When the microphone device S1 is used over a long period of time and the position of the shaft 83 is repeatedly adjusted, as shown in Figure 13(b), a part of the raised portion 39, region 39b (the portion in contact with the shaft 83), gradually wears down and becomes recessed into a shape that corresponds to the outer shape of the shaft 83. In this way, the raised portion 39 wears down, but the contact area between the raised portion 39 and the shaft 83 gradually increases. With this configuration, the shaft holding structure of this configuration can prevent a decrease in the sense of friction when moving the shaft 83, even if the position of the shaft 83 is repeatedly adjusted.

[0061] Please refer to Figures 11 and 14. Figure 14 is a diagram schematically showing the cross-sectional shape of the raised portion in the AA diagram of Figure 11. The raised portion 39 is formed on a portion of the first inner circumferential surface 37a in the longitudinal direction. As shown in Figure 11, in this embodiment, the raised portion 39 is not formed over the entire first inner circumferential surface 37a, but is formed in a partial region. Specifically, as an example, the raised portion 39 is formed in the central portion of the first inner circumferential surface 37a in the longitudinal direction.

[0062] The raised portion 39 includes an inclined surface 39s. The inclined surface 39s is formed on each of both ends in the longitudinal direction of the raised portion 39. The inclined surface 39s is a surface that connects the second inner circumferential surface 39a and the first inner circumferential surface 37a.

[0063] The reason for providing such an inclined surface 39s is as follows. That is, in this embodiment, as described above, the shaft portion 83 moves within the shaft holding portion 35. If the inclined surface 39s were not provided and a step portion were formed at the end of the raised portion 39, the end of the raised portion 39 might get caught in the groove 83a of the shaft portion 83 (FIG. 14). In contrast, with this configuration, such catch is less likely to occur, and the shaft portion 83 can be moved smoothly.

[0064] (Effect of the axis holding mechanism of the microphone device S1) According to the shaft holding mechanism of the microphone device S1 described above, the shaft holding portion 35 that holds the shaft portion 83 of the microphone support member 81 is provided with the raised portion 39 that protrudes from the first inner circumferential surface 37a, and as described with reference to Fig. 13, even if the position of the shaft portion 83 is repeatedly adjusted and the raised portion 39 wears, the contact area between the raised portion 39 and the shaft portion 83 gradually increases. Therefore, it is possible to prevent a decrease in the feeling of friction when the shaft portion 83 is moved.

[0065] Furthermore, in this embodiment, the raised portion 39 protrudes in the same direction as the insertion direction of the fixing screw Sw. With this configuration, the shaft portion 83 presses against the raised portion in the direction shown by arrow B in Fig. 3. Therefore, as the raised portion 39 wears, the contact area between the shaft portion 83 and the raised portion 39 increases, making it easier to obtain the technical effect of maintaining a sense of friction.

[0066] While the above describes an example of a shaft holding mechanism in which shaft 83 of microphone support member 81 is movable in its extension direction, the shaft holding mechanism may also be applied to a configuration in which shaft 83 rotates around its central axis. The shaft does not necessarily have to be part of the microphone support member, but may be a part provided on any component that needs to maintain a sense of friction. The inclined surface 39s of raised portion 39 does not have to be provided on both ends, but may be provided on only one end.

[0067] The present invention has been described above using embodiments, but 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. For example, all or part of the device can be configured by functionally or physically distributing or integrating any unit. Furthermore, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination also have the effects of the original embodiments. [Explanation of symbols]

[0068] 10 Headband unit 11 Head Wire 15 Right contact pad 20 Left contact pad 21 Base member 21A 1st page 21B 2nd side 22 Receiving part 22g guide rib 24 Guide recess 27 Spring support 29 Elastic Body 31 Cover member 32 Cover body 32a aperture 32h screw hole 35 Shaft holding part 37 Peripheral wall part 37a 1st inner surface 39 Ridge 39a 2nd inner surface 39b area 39s slope 40 Locking mechanism 41 Slider member 42 Main body 42a Top side 43 Nails 45 Finger rest 46 biasing member 46a Winding section 46b 1st arm 46c 2nd arm 47 Spring support 80 Microphone section 81 Microphone support member 83 Shaft 83a Groove 83d Guide groove 84 Microphone Arm 100 microphone units S1 Microphone Unit Sw fixing screw

Claims

1. a microphone support member that supports the microphone unit and has a rod-shaped shaft portion with a plurality of grooves formed at predetermined intervals; a holding member having a shaft holding portion formed thereon that holds the shaft portion in a state in which the shaft portion can move along the extending direction of the shaft portion; a locking mechanism in the shaft holding portion that fixes the position of the shaft portion; Equipped with The locking mechanism is a slider member provided to be movable in a direction advancing and retreating relative to the shaft portion, the slider member having a claw formed thereon to fit into the groove; a biasing member that presses the slider member toward the shaft portion; and The slider member is formed with a finger hook portion that is operated by a user to move the slider member to a position where the claw is disengaged from the groove. Axis position adjustment mechanism.

2. the biasing member is a torsion spring, The torsion spring has a winding portion and an arm portion extending from the winding portion, and the arm portion presses the slider member against the shaft portion. The shaft position adjustment mechanism according to claim 1 .

3. The holding member is a base member having a receiving portion formed thereon for receiving a part of the shaft portion; a cover member attached to the base member; and The base member has a guide rib that is formed in the receiving portion so as to extend in the extension direction of the shaft portion, and that is inserted into a guide groove formed in the shaft portion to prevent the shaft portion from rotating around the central axis of the shaft portion and to guide the movement of the shaft portion.

3. The shaft position adjusting mechanism according to claim 1 or 2.

4. The holding member is a base member having a receiving portion formed thereon for receiving a part of the shaft portion; a cover member attached to the base member; and The finger hook portion is a protrusion and is provided to be positioned inside an opening formed in the cover member.

3. The shaft position adjusting mechanism according to claim 1 or 2.

5. a headband unit to be worn on the user's head; a shaft position adjusting mechanism according to claim 1 or 2; Equipped with The headband unit includes: a contact pad portion that contacts the side of the user's head when the headband unit is worn, and the holding member and the locking mechanism are provided on the contact pad portion; Microphone device.

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