JP6280709B2 - Head wearing tool and adjusting device - Google Patents

Description

  The present invention relates to a head-mounted device such as a headphone or an earmuff.

  Head mounted devices such as headphones usually include a headband and a pair of ear pads provided at both ends of the headband (see Patent Document 1). When the head mounting tool is mounted, the pair of ear pads are pressed against both ears by the biasing force of the headband, and the position on the head is maintained.

JP 2004-023712 A

  For occupations such as pilots, telephone operators, production staff of radio and television broadcasting stations, etc., it may be necessary to wear the head-mounted device for a long time. In addition to these occupations, even when listening to music or the like with headphones, the head-mounted device may be worn for a long time depending on the usage situation. In these cases, the pressing force continues to act on both ears from the pair of ear pads due to the biasing force of the headband, which may cause pain.

  The present invention has been made in view of such problems, and one of its purposes is to provide a head-mounted device that can suppress adverse effects associated with long-term use.

  In order to solve the above-described problem, an aspect of the present invention relates to a head-mounted device. The headband of the human body is arranged across the head and elastically deformable headband, a pair of ear pads provided at both ends of the headband, and the pair of ear pads are displaced outward from the initial position. And an adjustment device capable of adjusting the position of the pair of ear pads and holding the pair of ear pads in the adjusted position.

  According to an aspect of the present invention, the pair of ear pads can be held at a position displaced outward from the initial position. Therefore, when the head mounting tool is worn, the amount of displacement of each ear pad portion is reduced, and accordingly, the pressing force acting on each ear portion from each ear pad portion is also weakened by the biasing force of the headband. Therefore, adverse effects associated with long-term use can be suppressed by weakening the pressing force.

  According to the present invention, even when the head mounting tool is worn for a long time, adverse effects associated with long-time use can be suppressed.

It is a side view which shows the head mounting tool which concerns on 1st Embodiment. It is a figure which shows the adjustment apparatus which concerns on 1st Embodiment. It is a figure which shows the adjustment apparatus which concerns on 2nd Embodiment. It is a figure which shows the adjustment apparatus which concerns on 3rd Embodiment. It is a side view which shows the head mounting tool which concerns on 4th Embodiment. It is a figure which shows the hinge body which concerns on 4th Embodiment.

  FIG. 1 shows a head-mounted device 10 according to the first embodiment. The head wearing tool 10 is configured as a headphone. The head mounting device 10 includes a headband 20, a hanger 25, a pair of ear pads 30, a microphone unit 35, and an adjustment device 40.

  The headband 20 is bent and provided in an arc shape, and is composed of a plate material, a bar material, or the like. The headband 20 is made of a flexible material such as synthetic resin. The hanger 25 is attached to both end portions 21 of the headband 20. The hanger 25 is provided with a rotating shaft 27 at a lower portion thereof. The hanger 25 is connected to a housing 31 (described later) of the ear pad 30 via a rotary shaft 27 and supports the ear pad 30 rotatably around the rotary shaft 27.

  The pair of ear pads 30 are provided at both end portions 21 of the headband 20. The ear pad 30 includes a housing 31 and an ear pad 33. The housing 31 contains a speaker unit (not shown) for outputting the received sound. The ear pad 33 is attached to the inner side surface of the housing 31 and accommodates a cushion material therein. The microphone unit 35 is for collecting and transmitting sound, and is attached to the housing 31 of the ear pad 30 on one side of the headband 20 in the left-right direction. As will be described in detail later, the pair of ear pads 30 is held by the adjustment device 40 at a position displaced outside the initial position (hereinafter referred to as a holding position). In the drawing, a state where the pair of ear pads 30 are in the holding position is indicated by a solid line, and a state where the pair of ear pads 30 is in the initial position is indicated by a two-dot chain line S1.

  The head wearing tool 10 is elastically deformed so that both end portions 21 of the headband 20 are further spread outward from a state in which the pair of ear pad portions 30 are in the holding position when the head wearing device 10 is worn on the human head. Between the ear pads 30 so that the head of the human body is located. The head mounting device 10 is held at the position of the head by pressing the pair of ear pads 30 against both ears of the human body by the biasing force generated by the elastic deformation thereof. In the figure, a state when the human body is worn on the head is indicated by a two-dot chain line S2. At this time, the headband 20 is disposed across the head of the human body from side to side, and the microphone unit 35 is disposed on the front side of the head of the human body. The ear pad 30 is stably pressed against the ear part of the human body by the rotation around the rotation shaft 27 and the elastic deformation of the ear pad 33.

  2A and 2B show the adjusting device 40, where FIG. 2A is a side view, FIG. 2B is an enlarged exploded view of a portion B in FIG. 2A, FIG. It is an expanded sectional view of the D section of (a). The adjusting device 40 includes a plurality of position holding units 41, an interval holding unit 43, and a tensile force applying mechanism 50. The position holding portions 41 are formed in a cylindrical shape, and a plurality (two in the drawing) are arranged at intervals in the longitudinal direction of the headband 20. The position holding portion 41 is provided with an insertion port 41b in the side portion 41a for taking the headband 20 in and out. The insertion port 41 b is opened and closed by a lid 42 that can slide along a slide groove 41 c formed on the inner surface of the position holding portion 41. The position holding part 41 may be partly detachable from other parts by screws, hinges, etc., and the headband 20 may be taken in and out.

  The interval holding unit 43 is spanned across the plurality of position holding units 41 inside the headband 20 and holds these intervals. In the illustrated example, the interval holding portion 43 is formed in a plate shape, but may be formed in a rod shape or the like, and is made of a flexible material such as a synthetic resin.

  Returning to FIG. 1, the headband 20 is disposed in the plurality of position holding portions 41 and is in contact with the headband 20. The position holding unit 41 holds the position with respect to the headband 20 by a frictional force or the like accompanying the contact of the headband 20. The position holding part 41 is not limited to the illustrated form as long as the position with respect to the headband 20 can be held. For example, a protrusion is provided on the headband 20 and the position of the position holding part 41 may be held by contact with the protrusion. .

  Returning to FIG. 2, the tensile force applying mechanism 50 includes a pair of bands 51 and a band fastener 70. The pair of bands 51 are attached to the upper surfaces of the plurality of interval holding portions 43. The pair of bands 51 includes a first band 51A and a second band 51B. A plurality of serrated grooves 55 are formed on the upper surface 51a of the first band 51A along the longitudinal direction thereof. In the groove portion 55, stopper surfaces 55a and guide surfaces 55b are alternately provided in the longitudinal direction. A band fastener 70 is attached to the tip of the second band 51B.

  The band fastener 70 includes a guide tube 71 and a lock member 80. A band insertion hole 71a is formed in the guide cylinder 71, and the first band 51A is inserted into the band insertion hole 71a so as to be slidably guided. The lock member 80 includes a claw portion 81, a lever portion 83, and a lock spring 85. The lock member 80 is rotatably provided on the guide cylinder 71 and is urged by a lock spring 85 in one of the rotation directions. The claw portion 81 is provided in the guide tube 71. When the lock member 80 is rotated by the biasing force of the lock spring 85, the claw portion 81 enters the groove portion 55 of the first band 51A inserted into the band insertion hole 71a.

  When the first band 51A is moved to the tip end side thereof, the lock member 80 is rotated so that the claw portion 81 comes out of the groove portion 55 due to the contact between the claw portion 81 and the guide surface 55b of the groove portion 55, and the movement of the first band 51A. Permissible. On the other hand, when the first band 51 </ b> A is moved to the proximal end side, the movement of the first band 51 </ b> A is restricted by the contact between the claw portion 81 and the stopper surface 55 a of the groove portion 55. The lock member 80 is provided with a lever portion 83 outside the guide tube 71. The lock member 80 rotates so that the claw portion 81 comes out of the groove portion 55 by the operation of the lever portion 83. At this time, the first band 51A is allowed to move to the proximal end side.

  In the tension applying mechanism 50 described above, when the first band 51 </ b> A is moved so as to be inserted into the guide cylinder 71 to some extent, the direction A <b> 4 (approaching the position holding portions 41 on the outside of the headband 20). A tensile force is applied to (see FIG. 1). By this tensile force, a bending force in the direction A1 is applied to the headband 20 such that both end portions 21 spread outwardly against the urging force of the headband 20. This bending force increases as the amount of movement of the first band 51A into the guide cylinder 71 increases. The position of the pair of ear pads 30 is adjusted so as to be displaced outward from the initial position as the bending force applied by the adjusting device 40 increases. The initial position refers to a position where the pair of ear pads 30 are located when no bending force is applied to the headband 20 and the headband 20 is not elastically deformed.

  Since the movement of the first band 51A toward the proximal end is restricted by the lock member 80, the bending force corresponding to the amount of movement of the first band 51A is held, and the pair of ear pads 30 are at the adjusted holding positions. The locked state is maintained. On the other hand, when the movement of the first band 51A to the proximal end side is permitted by the operation of the lock member 80, the bending force applied by the adjusting device 40 is released, and the biasing force of the headband 20 is reached. Thus, the pair of ear pads 30 returns from the holding position to the initial position. That is, the adjusting device 40 can switch between the locked state and the unlocked state, and the lock member 80 is operated for the switching.

  The adjusting device 40 is designed to hold the pair of ear pads 30 at the following holding positions. Consider a case where the head mounting tool 10 is mounted on a head having a size assumed in design (hereinafter referred to as an assumed size) as an average size of the human head. In order to attach the head mounting tool 10 to the head of this assumed size, the pair of ear pads 30 are displaced outwardly against the urging force of the headband 20, and the pair of ear pads are caused by the urging force. The position with respect to the head needs to be maintained by pressing 30 against both ears of the human body. As described above, when the position of the pair of ear pads 30 when pressed against both ears of the human body is the mounting position, the position displaced inward from the mounting position needs to be the holding position.

  When the pair of ear pads 30 are in the mounting position, a pressing force within a predetermined range may act on both ears of the assumed size head. This pressing force may be within a range where the pressing force is held to such an extent that the pressing force does not shift the position on the head. In addition, the assumed size may be a weighted average value obtained by measuring the size of the heads of a predetermined number of human bodies, or may be appropriate based on company knowledge and statistics. Other values may be used. Further, the holding position may be a position where the pressing force does not act on both ears from the pair of ear pads 30.

  According to the head mounting tool 10 according to the above embodiment, the pair of ear pads 30 can be held at a position displaced outward from the initial position. Therefore, when the head mounting tool 10 is worn, the amount of displacement of each ear pad 30 to the outside decreases, and the pressing force acting on both ears from each ear pad 30 due to the urging force of the headband 20 accordingly. Weakened. Therefore, even when it is necessary to wear the head wearing tool 10 for a long time, such as a pilot or a telephone operator, it is possible to suppress adverse effects associated with long-time use by reducing the pressing force. This adverse effect is caused by, for example, pain caused by pressing around the ears or the like, or a pressing force acting from the front side of the pinna while the earring of glasses such as sunglasses is applied to the back side of the pinna. Pain is included.

  In addition, since the lock member 80 can be operated to switch between a locked state in which a bending force is applied and an unlocked state in which the bending force is released, the pressing force can be increased by a simple operation even if the pressing force is too weak. it can. This is effective when it is difficult to hear sound from the speaker unit of the ear pad 30 because the pressing force is too weak.

  FIG. 3 shows an adjusting device 40 according to the second embodiment. Since the adjustment device 40 differs from the first embodiment only in the configuration of the tensile force application mechanism 50, the configuration other than the tensile force application mechanism 50 is omitted. 3A is an exploded view of the tensile force applying mechanism 50, FIG. 3B is a plan view, and FIG. 3C is a plan sectional view. In the following embodiments, the same elements as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The pair of bands 51 are formed with through holes 59 along the longitudinal direction thereof. The first band 51A has a rack tooth 63 formed on one side surface 61 (upper side in FIG. 3) of the pair of side surfaces opposed to the through hole 59, and the second band 51B has the other side surface 62 (in FIG. 3). Rack teeth 64 are formed on the lower side. The first band 51A is inserted into the guide tube 71 of the band fastener 70 from one opening 71b, and the second band 51B is inserted from the other opening 71c. The first band 51 </ b> A and the second band 51 </ b> B are disposed so as to overlap in the guide cylinder 71.

  The band fastener 70 is provided with a rotation handle 73 detachably attached to the guide tube 71. The rotary handle 73 has a rotary shaft 75 disposed in the through hole 59 of the first band 51 </ b> A and the second band 51 </ b> B, and is rotatable around the rotary shaft 75. The rotary shaft 75 has pinion teeth 77 formed on the outer peripheral surface thereof, and meshes with the rack teeth 63 and 64 of the first band 51A and the second band 51B. The rotation handle 73 is rotated by a rotation operation of a handle portion 79 provided outside the guide cylinder 71. The rotational motion of the rotary handle 73 is converted into linear motion of the first band 51A and the second band 51B by meshing of the pinion teeth 77 and the rack teeth 63 and 64. The first band 51 </ b> A and the second band 51 </ b> B move in a direction in which their base ends approach each other by rotation of the rotary handle 73 in one direction F <b> 1, and in a direction in which their base ends move away from each other by rotation in the opposite direction Move to.

  When the base ends of the first band 51 </ b> A and the second band 51 </ b> B move to some extent in the direction of approaching each other, a tensile force is applied to the plurality of position holding portions 41 on the outside of the headband 20. By this tensile force, a bending force is applied to the headband 20 so that both end portions 21 spread against the urging force of the headband 20, and the increase in the bending force causes the positions of the pair of ear pads 30 to be initial. It is adjusted to be displaced outward from the position.

  Since the movement of the first band 51A and the like is restricted by friction between the first band 51A and the second band 51B and the guide cylinder 71, the bending force corresponding to the movement amount of the first band 51A and the like is maintained, and a pair of The ear pad 30 is held at the adjusted holding position. This bending force is adjusted by a rotating operation of the rotary handle 73, and the positions of the pair of ear pads 30 are also adjusted with the adjustment of the bending force. That is, the rotary handle 73 functions as the position operation member 100 that is operated to adjust the position of the pair of ear pads 30. According to the present embodiment, if the wearer rotates the rotary handle 73 with one hand while wearing the head-mounted device 10, a bending force is applied to the headband 20, and both ear pads 30 respectively The pressing force acting on the ear is weakened.

  FIG. 4 shows an adjusting device 40 according to the third embodiment. The adjusting device 40 does not include the tension applying mechanism 50 but includes an adjusting screw 47. The interval holding unit 43 of the adjustment device 40 is spanned by a plurality of position holding units 41 on the outside of the headband 20 and holds the interval between the position holding units 41. The interval holding portion 43 is formed with a female screw hole 43a penetrating in an intermediate portion thereof. The adjusting screw 47 has a shaft portion 47 a screwed into the female screw hole 43 a of the interval holding portion 43, and a protruding portion 49 is provided by the shaft portion 47 a protruding from the interval holding portion 43 to the headband 20. As shown in FIG. 4B, the adjustment screw 47 can change the protruding amount of the protruding portion 49 from the interval holding portion 43 by rotating the head portion 47 b.

  The protrusion 49 is pressed against the outside of the headband 20 by changing the protrusion amount. When the protruding portion 49 is further protruded, a bending force that causes both end portions 21 to spread outward against the urging force of the headband 20 due to an increase in the pressing amount of the protruding portion 49 against the headband 20 is caused by the head. It is given to the band 20. With this bending force, the position of the pair of ear pads 30 is adjusted so as to be displaced outward from the initial position, and the pair of ear pads 30 is held at the adjusted holding position. This bending force is adjusted by changing the protruding amount of the protruding portion 49 accompanying the rotation of the adjusting screw 47, and the position of the pair of ear pads 30 is also adjusted with the adjustment of the bending force. That is, the adjustment screw 47 functions as the position operation member 100 operated to adjust the position of the pair of ear pads 30. According to the present embodiment, since the positions of the pair of ear pads 30 are adjusted by changing the protruding amount of the protruding portion 49, it is not necessary to secure the longitudinal length of the headband 20 for the adjusting device 40. The size can be reduced.

  Note that the interval holding portion 43 and the adjustment screw 47 may be disposed inside the headband 20, and the tip end portion of the adjustment screw 47 may be rotatably attached to the headband 20. The adjustment screw 47 is rotatably attached to the headband 20 by a bearing device combined with a thrust bearing or the like so that a thrust load can be transmitted from the tip portion to the headband 20. In this case, as the adjusting screw 47 rotates, the protruding amount of the protruding portion 49 decreases, the headband 20 is pulled inward by the adjusting screw 47, and both end portions 21 thereof are moved outward against the urging force of the headband 20. An expanding bending force is applied to the headband 20.

  FIG. 5 shows a head-mounted device 10 according to the fourth embodiment. The headband 20 includes a plurality of divided members 23. The dividing member 23 is formed in a shape in which the headband 20 is divided into a plurality (two in the drawing) in the longitudinal direction, and is arranged adjacent to the longitudinal direction of the headband 20. The split member 23 is rotatably connected by a hinge body 90 described later. The dividing member 23 includes a first dividing member 23A and a second dividing member 23B. The adjusting device 40 includes a hinge body 90.

  6A and 6B show the hinge body 90, where FIG. 6A is a plan view, FIG. 6B is a front sectional view, and FIG. 6C is a side sectional view. The hinge body 90 includes a pair of cylindrical portions 91, a rotation shaft 92, and a lock member 80. The tubular portion 91 includes a first tubular portion 91A and a second tubular portion 91B. The cylindrical portion 91 is formed in a cylindrical shape having a bottom surface on one side in the axial direction and an opening on the other side. A pair of cylindrical part 91 is arrange | positioned face to face with each other. The pair of cylindrical portions 91 is. The rotation shafts 92 are inserted into the centers of the rotation shafts, and are provided so as to be rotatable around the rotation shafts 92. The first cylindrical portion 91A is provided at the distal end portion of the first divided member 23A, and the second cylindrical portion 91B is provided at the distal end portion of the second divided member 23B.

  The first cylindrical portion 91A has a plurality of internal teeth 91a formed on the inner peripheral surface thereof. The second tubular portion 91B is provided with a through hole on the outer peripheral surface, and the lock member 80 is inserted through the through hole. The second cylindrical portion 91B is formed with an inner cylindrical portion 91b into which the rotary shaft 92 is slidably inserted, and a lock spring 85 is provided between the inner cylindrical portion 91b and the inner surface of the lock member 80. The lock member 80 is pushed outward by the urging force of the lock spring 85, but comes out of contact with the inner peripheral surface of the second cylindrical portion 91B and is restricted from coming out to the outside. The locking member 80 is provided with a claw portion 81 that enters the internal tooth 91a of the first cylindrical portion 91A. When the nail | claw part 81 has entered, rotation of a pair of cylindrical part 91 is controlled. On the other hand, when the lock member 80 is pushed in, the claw portion 81 comes out of the internal teeth 91a and the pair of cylindrical portions 91 are allowed to rotate. The first cylindrical portion 91A is provided with a plurality of rotation stoppers 93 on the inner peripheral surface thereof, and the lock member 80 comes into contact with the rotation stopper 93 so that the rotation of the pair of cylindrical portions 91 falls within a predetermined range. Regulated by

  In the adjustment device 40 described above, since the rotation of the pair of cylindrical portions 91 is restricted by the lock member 80, a lock state is maintained in which the angle formed by the plurality of split members 23 is maintained. On the other hand, the operation of the lock member 80 allows the pair of cylindrical portions 91 to rotate, and the plurality of divided members 23 rotate along with the rotation, and an unlocked state in which the angle formed by these rotations can be adjusted. . Further, when the pushing of the lock member 80 is released, the lock member 80 is brought into a locked state, and the plurality of divided members 23 are held at the adjusted angle.

  The pair of ear pads 30 are configured to be in the initial position when the rotation stopper 93 restricts the rotation of the pair of tubular portions 91 in one direction. When the angle formed by the plurality of split members 23 is adjusted by the rotation of the pair of cylindrical portions 91, the pair of ear pad portions 30 are adjusted so as to be displaced outward from the initial position, and when held at the angle after the adjustment, The pair of ear pads 30 are held at the holding position after adjustment from the initial position. The pair of ear pads 30 may be configured to be in the holding position when rotation of the pair of tubular portions 91 in the other direction is restricted by the rotation stopper 93. The initial position refers to a position where the pair of ear pads 30 are located at a predetermined angle such that the angle formed by the plurality of divided members 23 is approximately 180 °.

  When the lock member 80 is operated to be unlocked when the head is mounted on the human body, the plurality of divided members 23 move in the outer direction A5 (see FIG. 5) due to the reaction force accompanying the urging force of the headband 20. Then, the pressing force from the pair of ear pads 30 is weakened. According to this embodiment, when the pressing force is too strong, the pressing force can be reduced by a simple operation if the lock member 80 is operated to release the lock.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment only shows the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  Although the head-mounted device 10 according to the above-described embodiment is configured as a headphone, it may be configured as an earmuff or the like. As long as the headband 20 is disposed across the head of the human body from side to side, the headband 20 may be disposed behind or in front of the head. The adjustment device 40 according to the first to third embodiments is detachably attached to the headband 20 and is provided separately from the headband 20, but may be provided integrally with the headband 20.

  The adjusting device 40 according to the above-described embodiment adjusts and holds the position of the pair of ear pads 30 by applying a bending force to the headband 20 or adjusting the angle of the headband 20. In addition to this, the adjustment device 40 may adjust and hold the positions of the pair of ear pads 30 by changing the mounting position of the ear pads 30 with respect to the headband 20.

  The adjustment device 40 according to the above-described embodiment has been described as an example in which the position of each ear pad 30 can be adjusted such that the pair of ear pads 30 are displaced outward from the initial position. With this configuration, as described below, the adjustment device 40 can further adjust the position of each ear pad 30 so that the pair of ear pads 30 are displaced inward from the initial position. Each ear pad 30 may be configured to be held at the position. Thereby, at the time of mounting | wearing with the head mounting tool 10, not only the pressing force which acts on both ear parts from each ear pad part 30 by the biasing force of the headband 20 can be weakened but the pressing force can be strengthened. Therefore, since the size of the head is small, the pressing force can be increased even when the pressing force due to the urging force of the headband 20 is not sufficiently strong, and the desired pressing force can be obtained regardless of the size of the wearer's head. Can be adjusted to work.

  The adjustment device 40 according to the first and second embodiments moves the first band 51 </ b> A so as to be extracted from the guide cylinder 71, and the outer side of the headband 20 with respect to the plurality of position holding portions 41. It is sufficient that the force is applied in a direction away from each other. By this force, a bending force is applied to the headband 20 against the urging force of the headband 20 such that both end portions 21 are narrowed inward. With this bending force, the position of the pair of ear pads 30 is adjusted so as to be displaced inward from the initial position, and held at the position after the adjustment. The adjusting device 40 according to the third embodiment is configured such that the adjusting screw 47 can be rotated to the headband 20 by the bearing device so that a thrust load can be transmitted from the tip portion of the adjusting screw 47 to the headband 20. It is good to attach. By changing the protruding amount of the protruding portion 49 accompanying the rotation of the adjusting screw 47, a bending force is applied to the headband 20 so that both end portions 21 are narrowed inward as in the first and second embodiments. In the adjustment device 40 according to the fourth embodiment, the rotation stopper 93 rotates the unidirectional rotation of the pair of tubular portions 91 (for example, the rotation of the first tubular portion 91A shown in FIG. 6B in the direction F2). ) Is restricted, the pair of ear pads 30 may be configured to be in a position displaced inward from the initial position. When the angle formed by the plurality of split members 23 is adjusted by the rotation of the pair of cylindrical portions 91, the pair of ear pads 30 can be adjusted so as to be displaced inward from the initial position. When the angle of the plurality of divided members 23 is held at the adjusted angle by operating the lock member 80, the pair of ear pads 30 are held at the adjusted position from the initial position.

  The adjustment device 40 according to the above-described embodiment is attached to the headband 20 at the center position in the left-right direction B. Of the left-right direction B of the headband 20, what is the attachment position of the microphone unit 35? It may be attached to the opposite side. Accordingly, the adjustment device 40 can be operated with the other hand while holding the one ear pad 30 with one hand to suppress the positional deviation of the microphone part 35. The microphone unit 35 may be attached to the headband 20.

DESCRIPTION OF SYMBOLS 10 Head mounting tool, 20 Headband, 21 Both ends, 23 Dividing member, 30 Ear pad part, 35 Microphone part, 40 Adjustment apparatus, 41 Position holding part, 43 Space | interval holding part, 50 Tensile force provision mechanism, 80 Lock member , 90 Hinge body, 100 Position operation member.

Claims (5)

A headband to be placed across the head of the human body from side to side;
A pair of ear pads provided at both ends of the headband;
An adjustment device capable of adjusting the positions of the pair of ear pad portions so that the pair of ear pad portions are displaced outward from an initial position, and capable of holding the pair of ear pad portions at the adjusted position; equipped with a,
The adjusting device is provided separately from the headband and is detachably attached to the headband.
The adjusting device is capable out the headband, head mounting device, characterized in Rukoto of having a position holding unit position relative to the headband is held.   The position holding portion is provided with an insertion port for taking in and out the headband,
  The head mounting tool according to claim 1, wherein the insertion port can be opened and closed by a lid.   The head mounting tool according to claim 1 or 2, wherein the position holding unit holds a position with respect to the headband by a frictional force accompanying contact with the headband.   A headband to be placed across the head of the human body from side to side;
  An adjustment device used for a head wearing device comprising a pair of ear pads provided at both ends of the headband,
  The position of the pair of ear pads can be adjusted so that the pair of ear pads is displaced outward from the initial position, and the pair of ear pads can be held at the position after the adjustment,
  Provided separately from the headband and detachably attached to the headband,
  An adjusting device having a position holding unit that can be taken in and out of the headband and holds a position with respect to the headband.   The position holding portion is provided with an insertion port for taking in and out the headband,
  The adjusting device according to claim 4, wherein the insertion port can be opened and closed by a lid.

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