JP2009130399A - Head-mounted device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a matter that the mounting operation of a mounting mechanism having a plurality of pressing portions is complicated because each pressing portion is provided with a regulation mechanism, and thereby a device becomes large and heavy. <P>SOLUTION: A head-mounted device being mounted to the head of a user has a linear member connected to a pressing member for pressing the head, and a rotary member for winding the linear member according to rotary operation on an operating member, wherein the linear member is guided such that a variation in length produced when it is wound by the rotary member causes to move the pressing member in the direction for pressing the head. The head-mounted device has first and second suppression mechanisms for suppressing a rotary operation of the rotary member in the direction reverse to the winding direction of a linear member by a frictional force, and a release mechanism for associating the first and second suppression mechanisms with the operating member such that suppression state of the rotary member caused by the first suppression mechanisms is released by first operation on the operating member, and suppression state of the rotary member caused by the first and second suppression mechanisms is released by second operation on the operating member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mounting mechanism for a device to be mounted on an observer's head.

  A head-mounted display (hereinafter referred to as “HMD”) is well known as a head-mounted device used by being mounted on the head. The HMD is widely used due to advantages such as easy viewing of a video on a large screen, easy stereoscopic viewing, and movement with an observer. The mounting mechanism of the HMD is such that the HMD is fixed to the head by tightening the periphery of the head with a belt-like member, or the front head pressing portion and the back head pressing portion are provided, and the back head pressing portion is moved back and forth. A device that presses and fixes the HMD to the head is well known. In these mounting mechanisms, the HMD can be removed by loosening the belt-like member and retreating the back head pressing member.

Furthermore, for the purpose of reducing the downward slippage due to the weight of the HMD, a type of mounting mechanism that supports the weight of the HMD by pressing the top of the head is also well known (see Patent Document 1). Further, when the HMD is attached, it is preferable that the HMD can be easily attached while maintaining the display unit at a position where a correct image can be recognized. Therefore, a type using a wire has been proposed as a mounting mechanism that can be easily mounted while holding the HMD with one hand (see Patent Document 2).
JP-A-8-088814 JP-A-7-333547

  However, in the adjustment mechanism in the mounting mechanism described in Patent Document 1 and Patent Document 2, the mechanism that releases the pressing state of the head by the pressing member takes either a pressed state or a released state. For this reason, when the operation of loosening the member on the belt is performed, the tightening state is released immediately, and it is difficult to adjust the delicate tightening condition. That is, in the mounting of the HMD, in order to finely adjust the tightening condition, an operation such as loosening the belt-shaped member little by little could not be performed. For this reason, the operability when the HMD is mounted is not good.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to facilitate an operation of mounting a head-mounted device such as an HMD on the head.

In order to achieve the above object, a head-mounted device according to the present invention has the following configuration. That is,
A head-mounted device to be worn on the user's head,
A pressing member that presses the head;
A linear member connected to the pressing member;
A rotating member that winds the linear member in response to a rotating operation on the operating member;
Guide means for guiding the linear member such that a change in the length of the linear member caused by winding the linear member by the rotating member moves the pressing member in the pressing direction of the head;
First and second restraining means for restraining the rotational movement of the rotating member in the direction opposite to the winding of the linear member by a frictional force;
The rotation state of the rotation member by the first suppression unit is released by the first operation on the operation member, and the rotation member by the first and second suppression units is released by the second operation on the operation member. A release mechanism that associates the first and second suppression means with the operation member so that the suppression state is released.

  According to the present invention, it is easy to mount a head-mounted device such as an HMD on the head.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a perspective view showing a head-mounted display (hereinafter, HMD) according to a first embodiment of a head-mounted device applicable to the present invention. The HMD main body includes a display unit 1 and a mounting unit 2 for holding the display unit 1 in front of the user's eyes. The display unit 1 includes a display element (not shown) that displays an image therein, and an eyepiece optical system (not shown) that enlarges the image displayed on the display element and guides the image to the user's eyeball. The display unit 1 is coupled with a frame 21 having a shape that extends to the left and right temporal regions along the periphery of the user's head and further straddles the top of the head. The frame 21 has a hollow structure in order to achieve both rigidity and weight reduction.

  Furthermore, holes 21 a and 21 b for passing the wires 31 are provided in the top of the frame 21. The frame 21 is connected to an expandable bellows-like expandable tube 22 so as to surround the back of the head.

  2 is a schematic view of the arrangement of the wire 31 and the wire 32 of the HMD according to the first embodiment, FIG. 3 is a front view of the HMD viewed from the display unit 1, and FIG. 4 is a side view of the HMD.

  As shown in FIG. 2, adjustment parts are provided in the vicinity of two ears on the left and right sides of the frame 21, respectively, a right adjustment part 4R on the right side and a left adjustment part 4L on the opposite side. The adjustment parts 4R, 4L are symmetrically configured using the same member, and the wire 31 as the first linear member has one end coupled to the adjustment dial 41 of the left adjustment part 4L, and the other end being a frame. 21 is coupled to the right coupling portion N. The wire 32 as the second linear member has one end coupled to the adjustment dial 41 of the right adjustment unit 4 </ b> R provided on the opposite side and the other end coupled to the left coupling unit M of the frame 21.

  As shown in FIGS. 2 and 3, the wire 31 passes through the inside of the frame 21 from the coupling portion of the left adjustment portion 4L, and once exits the frame 21 through the hole 21a. Then, the wire 31 passes through the through hole 53 b of the parietal pad 53, is led again into the frame 21 from the hole 21 b of the frame 21, and continues to the right coupling portion N of the frame 21. The wire 32 passes through the telescopic tube 22 from the coupling portion of the right adjustment portion 4R, and is fastened to the frame 21 at the left coupling portion M on the left head portion of the frame 21.

  The display unit 1 is coupled with a forehead pad 51 that presses the forehead when worn. A occipital pad 52 that presses the occipital region when worn is coupled to the telescopic tube 22. Further, a parietal pad 53 that presses the parietal portion when worn is movably attached to the parietal portion of the frame 21. The parietal pad 53 is integrated with a parietal pad guide 53c that engages with a guide part 21c provided on the frame 21, and the movement of the parietal pad 53 is restricted so as to move linearly in the head direction. ing. Further, a through hole 53b through which the wire 31 passes is opened in the parietal pad guide 53c.

  Next, the left adjustment unit 4L and the right adjustment unit 4R that adjust the wire length of the wire 31 that drives the parietal pad 53 will be described. Hereinafter, these adjustment units are collectively referred to as an adjustment unit 4.

  The adjustment unit 4 is disposed near the user's left and right ears or near the temple. The left adjustment unit 4L arranged in the vicinity of the left ear is used for adjusting the length of the wire 31 and driving the parietal pad 53. Further, the right adjustment unit 4 </ b> R disposed in the vicinity of the right ear is used to adjust the length of the wire 32 and drive the occipital pad 52. Of course, the configuration is not limited to this, and the pads adjusted by the left and right adjustment units may be reversed, or may be arranged on either the left or right side.

  FIG. 5 is a cross-sectional view taken along the line CC of the adjusting unit 4 in FIG. 4 (HMD side view). The adjustment unit 4 has a pulley 46 for winding the adjustment dial 41 and the wire 32. Further, the adjustment dial 41 and the pulley 46 are configured to transmit force via the restraining member 42. Further, the adjustment unit 4 in this embodiment biases the one-way clutch 43 that can rotate only in one direction and the restraining member 42 to the pulley 46 so that the adjustment dial 41 and the pulley 46 rotate simultaneously. A biasing spring 44 (see FIG. 6) is provided.

  6 is a DD cross-sectional view of the adjustment unit 4 in FIG. The operation of the restraining member will be described with reference to FIG. The first restraining member 42 a and the second restraining member 42 b are pressed against the pulley 46 by the biasing spring 44. As shown in FIG. 6, the restraining member 42 is divided into six when viewed from the front, and each has three first restraining members 42 a and three second restraining members 42 b.

  A case where the user operates the adjustment dial 41 to perform an operation of mounting the parietal pad 53 on the user's head will be described in detail. The six restraining members 42 a and 42 b are biased by the biasing spring 44 so as to press the pulley 46. Therefore, the adjustment dial 41 and the pulley 46 are in a state in which the relative positional relationship is fixed. Accordingly, the user's force to rotate the adjustment dial 41 in the direction in which the one-way clutch 43 can rotate is transmitted to the pulley 46, and the pulley 46 winds the wire 31 and consequently presses the top pad 53 against the top of the user. .

  When the user releases his / her hand from the adjustment dial 41 in a state where the parietal pad 53 is pressed against the user's head, the wire 31 driving the parietal pad 53 attempts to return to the original position with the tension. To do. Therefore, a force is generated in the parietal pad 53 to return to the initial position, and the pressing force is attempted to be relaxed.

  However, the pulley 46 is connected to the one-way clutch 43 via a guide member 54 for guiding the movement of the first suppression member 42a and the second suppression member 42b. The one-way clutch is a member that allows rotation only in one direction and prevents rotation in the reverse direction. In the present embodiment, the wire 31 is disposed so as to prevent rotation of the pulley 46 to be loosened. . Therefore, the wire 31 does not loosen even if the hand is released from the adjustment dial 41, and the state of being pressed against the user's head is maintained.

  Next, the operation when the user rotates the adjustment dial 41 in the direction opposite to the mounting direction, that is, in the rotation prevention direction of the one-way clutch 43 will be described in detail with reference to FIG.

  The adjustment dial 41 is provided with a guide pin 47, and the first suppression member 42a and the second suppression member 42b are engaged with the guide pin 47 and cams 55a and 55b for driving the suppression member. Is formed. The rotational force applied to the adjustment dial 41 is transmitted to the pulley 46 via the guide pin 47 and the first and second restraining members 42a and 42b.

  When the user tries to rotate the adjustment dial 41 in the direction opposite to the tightening direction, the first restraining member 42a, the second restraining member 42b, the guide member 54, and the pulley 46 also try to rotate integrally in the reverse direction. . However, since the guide member 54 is connected to the one-way clutch 43, the rotational movement in the reverse rotation direction described above is restricted, and the rotation of the guide member 54 is suppressed.

  When the adjustment dial 41 is rotated in a state where the driving of the guide member 54 is suppressed, the first suppression member 42a and the second suppression member 42b are driven along the trajectories of the cams 55a and 55b. The trajectories of the cams 55a and 55b are formed so as to separate the first suppression member 42a and the second suppression member 42b from the pulley 46, respectively. However, the first restraining member 42 a is first separated from the pulley 46, and at that time, the second restraining member 42 b is still formed to abut against the pulley 46. The rotation angle of the adjustment dial 41 at this time is defined as a first rotation angle. That is, when the adjustment dial 41 is rotated by the first rotation angle in the direction opposite to the tightening direction, only the second suppression member 42b is released from the suppression state.

  When the first restraining member 42a is separated from the pulley 46, the frictional force due to only the second restraining member 42b remains, but the frictional force between the pulley 46 and the guide member 54 (the restraining member 42) becomes small. The frictional force in this state is set to be weaker than the force for the wire 31 to return to the initial state, and the pulley 46 starts to slide against the second restraining member 42b. In this state, the pulley 46 rotates slowly while receiving the frictional force by the second restraining member 42b, and the wire 31 is fed out little by little. In this way, while the user holds the adjustment dial 41 in the state of being rotated in the reverse direction by the first rotation angle, the wire 31 is slowly loosened while sliding against the second restraining member 42b.

  When the user releases his hand from the adjustment dial 41, the first restraining member 42a presses the pulley 46 again by the biasing spring 44. For this reason, the frictional force of the 1st suppression member 42a and the 2nd suppression member 42b comes to act, and the relative relationship of the pulley 46 and a suppression member is fixed. Therefore, the pulley 46 is connected to the one-way clutch 43 via the guide member 54, and the operation of the pulley 46 rotating in the reverse direction is suppressed. For this reason, when the user removes his / her hand from the adjustment dial 41, the operation of loosening the wire 31 is suppressed.

  Thus, when the user rotates the adjustment dial 41 in the reverse direction by a predetermined rotation angle (first rotation angle), the first suppression member 42a is separated from the pulley 46, so that the wire 31 is the second suppression. While leaving the frictional force by the member 42b, it loosens while slowly sliding. Thus, since the wire 31 moves slowly, the user can easily adjust the tightening to the head and provide a comfortable operating environment.

  Next, the second operation when the user further rotates the adjustment dial 41 in the reverse direction as compared with the state of FIG. 7 will be described in detail with reference to FIG.

  A cam 55b is formed on the second restraining member 42b as well as the first restraining member 42a. In the state of FIG. 7, even when the first suppression member 42 a is separated from the pulley 46, the second suppression member 42 b still presses the pulley 46 and generates a frictional force. When the user further rotates the adjustment dial 41 in the reverse direction from this state, the trajectory of the cam 55b formed on the second suppression member 42b acts to separate the second suppression member 42b from the pulley 46. That is, by rotating the adjustment dial in the reverse direction by a second rotation angle larger than the first rotation angle, as shown in FIG. 8, the first suppression member 42a and the second suppression member 42b are pulleys. Leave 46. Thus, when the first and second restraining members 42a, 42b are separated from the pulley 46, there is no member that restricts the rotation of the pulley 46, so the wire 31 is loosened at a stretch and returns to the initial position. According to this configuration, when the user attaches / detaches the HMD, or when it is necessary to remove the HMD suddenly, the mounting member returns to the initial position all at once. Can provide environment.

  FIG. 9 is a diagram schematically showing the movement of the parietal pad 53 when the adjustment dial 41 described above is rotated. FIG. 9 shows the relationship between the adjustment unit 4L and the parietal pad 53. 9A shows a state before the adjustment dial 41 is rotated, and FIG. 9B shows a state after the adjustment dial 41 is rotated. When the adjustment dial 41 is rotated in the E direction, the pulley 46 is also rotated in the E direction so that the wire 31 is wound around the pulley 46 and the perimeter of the top of the wire 31 is shortened. As the perimeter of the top of the wire 31 becomes shorter, the top pad 53 moves toward the head. Similarly, the occipital head pad 52 is also wound around the occipital region by winding the wire 32 by the adjusting unit 4. As the occipital circumference of the wire 32 becomes shorter, the occipital pad 52 moves toward the head. At this time, the rotating direction in which the adjustment dial 41 winds the wire 31 and wire 32 is not limited to the direction of arrow E shown in FIG.

  In the above-described embodiment, the driving of the parietal pad 53 has been described. Needless to say, the same operation is performed on the occipital pad 52.

  As described above, according to this embodiment, it is possible to easily attach the HMD to the user's head while holding the display unit 1 in the correct position.

  In addition, by rotating the adjustment dial 41 by the first rotation angle in the direction opposite to the tightening direction, it is possible to perform an operation of slowly returning the head pad 53 and the occipital pad 52 after tightening strongly, thereby providing a comfortable operating environment. Can be provided. Further, when the user attaches / detaches the HMD or suddenly needs to be removed, the adjustment dial 41 is further rotated by the second rotation angle in the direction opposite to the tightening direction to thereby remove the pulley 46. Becomes free, and the mounting member returns to the initial position all at once. For this reason, mounting | wearing of HMD can be cancelled | released simply and a more comfortable operating environment can be provided.

  In the present embodiment, the wires 31 and 32 are assumed to be metal wires, but the material is not limited. For example, it may be a synthetic resin fiber such as nylon, or may be made of a special alloy that expands and contracts due to a temperature change of the material.

  Moreover, in this embodiment, although the 1st suppression member and the 2nd suppression member each demonstrated the shape divided into three, it is needless to say that it is not limited to this shape and the same effect should just be acquired. Yes.

  Furthermore, although the adjustment dial 41 shows an example in which the operator manually adjusts the length of the wire 31, the adjustment dial 41 may be driven by an electric or hydraulic actuator such as a motor.

  As described above, the HMD as the head-mounted device to be worn on the user's head in the first embodiment is connected to the occipital pad 52 and the parietal pad 53 as pressing members that press the head. It has the adjustment part 4 which winds up the wires 31 and 32 as a linear member. When the adjusting unit 4 winds the linear member, the pressing member moves, and the degree of attachment to the user's head is adjusted. The adjusting unit 4 includes a rotating member (for example, a pulley 46) that winds the linear member in response to a rotating operation to the adjusting dial 41 as an operating member. The frame 21, the holes 21 a and 21 b, and the telescopic tube 22 are moved in the pressing direction of the head in accordance with the change in the length of the linear member that occurs when the rotating member winds the linear member. The linear member is guided as follows.

  In the HMD having such a configuration, the adjustment unit 4 has two suppression mechanisms for suppressing the rotation operation of the rotation member by the frictional force. And the cancellation | release mechanism which cancels | releases the suppression state with respect to rotation of the rotation member by these two suppression mechanisms sequentially according to 1st, 2nd operation is provided. The release mechanism releases the restrained state of the rotating member by the first restraining mechanism by the first operation on the operating member, and restrains the rotating member by the first and second restraining mechanisms by the second operation on the operating member. The first and second suppression mechanisms and the operation member are associated with each other so as to release the state.

  More specifically, in the first embodiment, the one-way clutch 43, the biasing spring 44, and the first restraining member 42a function as a first restraining mechanism, and the one-way clutch 43, the biasing spring 44, and the second restraining mechanism. The member 42b functions as a second suppression mechanism. The rotating member is linked to the operation member, and is connected to the one-way clutch 43 fixed to the frame 21 of the HMD via frictional force in the suppression state by the first and second suppression mechanisms. The deterring force in the direction of preventing rotation of the one-way clutch 43 is transmitted to the rotating member by the frictional force between the deterring members 42a and 42b and the rotating member (pulley 46). The rotating member also rotates in accordance with the rotation operation of the operating member in the rotatable direction of the one-way clutch 43, and the linear member is taken up by the rotating member. Even when the operation member is released in this state, the one-way clutch 43 prevents the rotation member from rotating in the direction in which the linear member is loosened.

  On the other hand, when the first operation for rotating the operation member by a predetermined amount in the rotation prevention direction is performed, the guide pin 47 and the cams 55a and 55b function as a release mechanism as shown in FIG. A gap is generated between 42a and the pulley 46 as a rotating member. Thereby, the suppression state to the rotation member by the 1st suppression member 42a is cancelled | released. At this time, since the second restraining member 42b is still in contact with the rotating member and maintains the restrained state, the rotating member is not completely free from the one-way clutch. Since the frictional force generated by the second restraining member 42a is determined to be weaker than the force for the wire 31 to return to the initial state, the wire 31 is gradually drawn out. Further, when the second operation for rotating the operating member in the rotation preventing direction is performed, the second restraining member 42b is also separated from the rotating member as shown in FIG. 8, and the rotating member is completely released from the restrained state. In addition, since the force which returns to a suppression state acts by the urging | biasing spring 44, if a hand is released from an operation member, the 1st and 2nd suppression mechanism will transfer to a suppression state automatically.

  According to the configuration as described above, the first operation and the second operation can be performed on one operation member, so that a two-stage suppression state can be set. Thus, it is possible to provide a plurality of operating states, and a simple operation can be provided. Further, by using the linear member, the mechanism can be simplified and reduced in weight.

[Second Embodiment]
Hereinafter, the second embodiment will be described in detail. The perspective view of the HMD according to the second embodiment is the same as that of the first embodiment (FIG. 2). The side view of the HMD according to the second embodiment is the same as that of the first embodiment (FIG. 4).

  10 to 12 are sectional views taken along a section CC in FIG. The same members as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 10 is a diagram illustrating an initial state before the user wears the HMD. A pulley 63 is formed integrally with the second brake member 62, and the wire 31 is connected to the pulley 63. In the state of FIG. 10, the second brake operating pin 66 is pushed out from the groove of the adjustment dial 41, and the slide ring 67 is pushed leftward in the drawing.

  In this state, the second brake member 62 is pushed by the push spring 71 and is brought to the left. For this reason, the second brake member 62 is separated from the frame of the HMD. Further, due to the tension of the wire 31 wound around the pulley 63 formed integrally with the second brake member 62, a force for returning to the initial state is applied to the second brake member 62.

  The second brake member 62 and the first brake member 61 are formed so as to be able to move linearly by the key groove 65 but the relative rotational positional relationship does not change. The first brake member 61 is pressed against the frame 21 by the first brake member urging spring 72, and the portion indicated by hatching (the friction surface 101 of the first brake member 61) in FIG. It touches. The frictional force generated at the contact portion acts as a force that prevents the wire 31 from returning to the initial state.

  However, the frictional force by the first brake member 61 is not set so strong as to prevent the pulley 63 from rotating due to the tension of the wire 31. For this reason, the pulley 63 rotates slowly due to the balance between the tension of the wire 31 and the frictional force (suppressing force), and as a result, the wire 31 is slowly pushed out and returns to the initial position. At this time, the first brake member 61 and the second brake member 62 are integrally operated by the key groove 65, and the adjustment dial 41 and the first brake member 61 are synchronized with the first brake member release pin 69. Will work.

  In the initial state before the user mounts the HMD in the second embodiment on the head, the mounting member at the back of the head or the top of the head returns to the initial position, and the opening is wide open. For this reason, the user can easily attach the HMD without being caught by the attachment member.

  Next, the first operation of rotating the adjustment dial 41 by the user and mounting it on the head will be described in detail with reference to FIG.

  In FIG. 11, when the user rotates the adjustment dial 41 in the tightening direction and the rotation angle position of the adjustment dial 41 reaches the first position, a groove for the second brake operation pin 66 to enter is formed in the adjustment dial. 41 is formed. The slide ring 67 is urged rightward by a slide ring urging spring 73, and the second brake operation pin 66 is dropped into a groove formed in the adjustment dial 41. As is apparent from the comparison between FIG. 10 and FIG. 11, the second brake operating pin 66 moves in the right direction in the figure by entering the groove of the adjustment dial 41. The slide ring 67 and the second brake member 62 have a stepped shape and have a contact surface in the range indicated by reference numeral 68. The second brake member 62 is pushed by the stepped portion and pushed rightward in FIG.

  When the second brake member 62 moves in the right direction, a friction surface (the friction surface 102 of the second brake) formed on the second brake indicated by hatching in the drawing comes into contact with the frame. Thus, since the friction surfaces 101 and 102 of the first brake member 61 and the second brake member 62 are in contact with the frame, the pulley 63 against the force that the wire 31 tries to return to the initial state. Is prevented from rotating. At this time, the first brake member 61 and the second brake member 62 are synchronized by the key groove 65, and the adjustment dial 41 and the first brake member 61 are synchronized by the first brake member release pin 6. The user rotates the adjustment dial 41 against the frictional force of these members, drives the wire 31, and attaches the HMD to the user's head. Since the frictional force that suppresses the rotation of the pulley 63 is constantly applied to the adjustment dial 41, the wire 31 does not return even if the user releases the hand from the adjustment dial 41, and the mounted state is maintained.

  When the user adjusts the tightening of the HMD to the head, the adjustment dial 41 is rotated in the direction opposite to the tightening direction. Then, the second brake operation pin 66 is pushed out from the groove of the adjustment dial 41 again, and the slide ring 67 is moved leftward. When the slide ring 67 moves to the left, it is pushed by the push spring 71 of the second brake member 62, and the contact surface 68 of the slide ring 67 and the second brake member 62 is separated.

  This state is the same as the state described in FIG. 10, and the friction surface 102 on the second brake member 62 is separated from the frame, but the friction surface 101 of the first brake member 61 is still in contact with the frame. ing. Therefore, the frictional force that suppresses the rotation of the pulley 63 due to the tension of the wire 31 is not completely eliminated, and the wire 31 moves slowly while being braked by the first brake member 61. Since the wire 31 is slowly drawn out, the attachment member attached to the user's head also slowly returns to the initial state, so that the user can easily adjust the attachment state, and a comfortable operating environment can be achieved. Can be provided.

  Next, the operation when the user further rotates the adjustment dial 41 in the mounting release direction and the rotation angle position reaches the second position will be described in detail with reference to FIG.

  The adjustment dial 41 is formed with a groove for receiving the first brake member release pin 69 similar to the groove for receiving the second brake operation pin 66. The first brake member release pin 69 is in a state of being fitted into the groove portion of the adjustment dial 41 when the mounting member described in detail in FIGS. Therefore, the first brake member 61 is pressed against the frame by the first brake member urging spring 72 to generate a frictional force.

  When the user performs the third operation of further rotating the adjustment dial 41 from the position at the time of mounting adjustment, the first brake member release pin 69 is pushed out from the groove portion of the adjustment dial 41 as shown in FIG. Then, the slide ring 67 is also pushed leftward by the first brake member release pin 69. By being pushed by the slide ring 67 in this way, the first brake member 61 is released from the frame 21 and all the frictional force that suppresses the force that the wire 31 tries to return is released. Therefore, the wire 31 tries to quickly return to the initial position. At this time, the first brake member 61 and the second brake member 62 are synchronized by the key groove 65, but the adjustment dial 41 and the first brake member 61 are asynchronous by the operation of the first brake release pin 69. . When the user attaches / detaches the HMD, or when it is necessary to remove the HMD suddenly, the mounting member returns to the initial position at a stroke, so that the user can easily release the mounting and provide a more comfortable operating environment.

  According to the second embodiment, in the initial state before the user mounts the HMD on the head, the mounting member on the back of the head or the top of the head has returned to the initial position, and the opening is wide open. Therefore, when the user wears the HMD, the user can easily wear the HMD without being caught by the wearing member, and can provide comfortable wearing.

  In addition, after the attachment is strongly tightened, the adjustment dial 41 is rotated in the opposite direction to the state shown in FIG. 10, whereby the operation of slowly returning the wires 31 and 32 becomes possible, and a comfortable operation environment can be provided. . Furthermore, when the user attaches / detaches the HMD or when it is necessary to remove the HMD suddenly, the adjustment dial is rotated to the second rotation position. By this operation, the state shown in FIG. 12 is obtained, and the mounting member returns to the initial position all at once, so that the mounting can be easily released and a more comfortable operating environment can be provided.

  In the second embodiment, the wires 31 and 32 are assumed to be metal wires, but the material is not limited. For example, it may be a synthetic resin fiber such as nylon, or may be made of a special alloy that expands and contracts due to a temperature change of the material.

  Furthermore, although the adjustment dial 41 shows an example in which the operator manually adjusts the length of the wire 31, the adjustment dial 41 may be driven by an electric or hydraulic actuator such as a motor.

  As described above, in the second embodiment, the first brake member 61 is provided as the first suppression mechanism, and the second brake member 62 is provided as the second suppression mechanism. And according to the rotation operation to the 1st rotation direction with respect to the adjustment dial 41 as an operation member, the adjustment part 4 is shown in FIG. 11 by the 2nd brake operation pin 66 and the 1st brake member cancellation | release pin 69. Transition to the state. Then, in response to the rotation operation of the first rotation angle in the second rotation direction opposite to the first rotation direction with respect to the operation member, as shown in FIG. The slide ring 67 is pushed, and the restrained state by the second brake member 62 is released. Further, when the operation member is rotated in the second rotation direction to a second rotation angle that is larger than the first rotation angle, as shown in FIG. 67 is further pushed in, and the restrained state by the first brake member 61 is released.

  According to the above configuration, the mounting state of the HMD as the head-mounted device can be easily finely adjusted, as in the first embodiment. Moreover, it becomes possible to change the operation state of a press member with the rotation angle of an operation member, and a comfortable operation feeling can be provided.

[Third Embodiment]
Hereinafter, the third embodiment will be described in detail. The same members as those in the first and second embodiments are denoted by the same reference numerals and description thereof will be omitted.

  FIG. 13 is a diagram illustrating a state in which the user fastens the HMD to the head. Since the friction surfaces of the first brake member 61 and the second brake member 62 are in contact with the frame, the rotation of the pulley 63 is prevented. At this time, the first brake member 61 and the second brake member 62 are synchronized by the key groove 65, and the adjustment dial 41 and the first brake member 61 are synchronized by the first brake member release pin 69. Accordingly, the user rotates the adjustment dial 41 against the frictional force of these members, thereby rotating the pulley 63, driving the wire 31, and mounting the HMD on the user's head. Since the frictional force that inhibits the rotation of the pulley 63 is constantly applied to the adjustment dial 41, the wire 31 does not return even if the user removes his / her hand from the adjustment dial 41, and remains in the mounted state.

  Next, when the user adjusts the tightening of the head of the HMD, the release button 75 at the center of the adjustment dial 41 is pushed in as shown in FIG. Then, the second brake operating pin 66 is pushed leftward by the release button 75, and the slide ring 67 is moved leftward. When the slide ring 67 moves to the left, the second brake member 62 is also pushed to the left by the slide ring 67 at the stepped portion, and the contact surface of the second brake member is separated from the frame. At this time, the friction surface on the second brake member 62 is separated from the frame, but the friction surface of the first brake member 61 is still in contact with the frame. Therefore, the frictional force that suppresses the rotation of the pulley 63 due to the tension of the wire 31 is not completely eliminated, and the wire 31 moves slowly while being braked by the first brake member 61. At this time, the first brake member 61 and the second brake member 62 are synchronized by the key groove 65, and the adjustment dial 41 and the first brake member 61 are synchronized by the first brake member release pin 69. Therefore, since the wire 31 is slowly drawn out, the attachment member attached to the user's head also slowly returns to the initial state, and thus the user can easily adjust the attachment state and perform comfortable operation. Can provide environment.

  Next, the operation when the release button 75 is further pressed will be described in detail with reference to FIG. When the user pushes the release button 75 further, the first brake member release pin 69 and the second brake operation pin 66 are moved further leftward by the release button 75. As the first brake member release pin 69 and the second brake operation pin 66 move leftward, the slide ring 67 is further moved leftward.

  When the slide ring 67 is pushed, the first brake member 61 is released from the frame, and all the frictional force that suppresses the force of the wire 31 to return is released. Therefore, the wire 31 tries to quickly return to the initial position. At this time, the first brake member 61 and the second brake member 62 are synchronized by the keyway 65, and the adjustment dial 41 and the first brake member 61 are asynchronous by the operation of the first brake member release pin 69. When the user attaches / detaches the HMD, or when it is necessary to remove the HMD suddenly, the mounting member returns to the initial position at a stroke, so that the user can easily release the mounting and provide a more comfortable operating environment.

  As described above, according to the third embodiment, it is possible to wear the HMD on the user's head while holding the display unit in the correct position. Moreover, the operation | movement which returns slowly after tightening mounting | wearing is attained, and a comfortable operating environment can be provided. Furthermore, when the user attaches / detaches the HMD, or when it is necessary to remove the HMD suddenly, the mounting member returns to the initial position all at once, so that the user can easily release the mounting and provide a more comfortable operating environment. it can. Moreover, since the speed which returns the wire 31 can be changed with the pushing amount of a cancellation | release button, a comfortable operating environment can be provided.

  As described above, in the third embodiment, the operation member includes the release button 75 that is a portion capable of pushing the pulley 63 as the rotation member in the rotation axis direction. Then, as shown in FIG. 14, the restrained state by the second brake member 62 is released by the pushing operation of the release button 75 by the first pushing amount in the rotation axis direction. Further, as shown in FIG. 15, the restrained state by the first brake member 61 is also released by the pushing operation with the second pushing amount larger than the first pushing amount in the rotation axis direction of the release button 75. Is done.

  As described above, according to the third embodiment, it is possible to change the operation state of the pressing member by separate operations of rotation and pushing of the operation member, and it is possible to reduce the possibility that the user makes a mistake in the operation.

It is a perspective view of HMD in a 1st embodiment. It is a perspective view of HMD which showed roughly how to pass a wire in a 1st embodiment. It is a front view of HMD in a 1st embodiment. It is a side view of HMD in a 1st embodiment. It is CC sectional drawing of FIG. It is DD sectional drawing of the adjustment part 4 in 1st Embodiment, and is a figure explaining the operation | movement at the time of winding of the wire 31. FIG. It is DD sectional drawing of the adjustment part 4 in 1st Embodiment, and is a figure explaining the operation | movement at the time of the rewinding of the wire 31. FIG. It is DD sectional drawing of the adjustment part 4 in 1st Embodiment, and is a figure explaining the operation | movement at the time of the rewinding of the wire 31. FIG. It is the schematic explaining the motion of the pad by the change of the head periphery length of a wire. It is a figure explaining operation | movement of the adjustment part 4 in a 2nd Example. It is a figure explaining operation | movement of the adjustment part 4 in a 2nd Example. It is a figure explaining operation | movement of the adjustment part 4 in a 2nd Example. It is a figure explaining operation | movement of the adjustment part 4 in 3rd Embodiment. It is a figure explaining operation | movement of the adjustment part 4 in 3rd Embodiment. It is a figure explaining operation | movement of the adjustment part 4 in 3rd Embodiment.

Claims (6)

A head-mounted device to be worn on the user's head,
A pressing member that presses the head;
A linear member connected to the pressing member;
A rotating member that winds the linear member in response to a rotating operation on the operating member;
Guide means for guiding the linear member such that a change in the length of the linear member caused by winding the linear member by the rotating member moves the pressing member in the pressing direction of the head;
First and second restraining means for restraining the rotational movement of the rotating member in the direction opposite to the winding of the linear member by a frictional force;
The rotation state of the rotation member by the first suppression unit is released by the first operation on the operation member, and the rotation member by the first and second suppression units is released by the second operation on the operation member. A head-mounted device comprising: a release mechanism that associates the first and second suppression means with the operation member so that the suppression state is released. The rotating member is linked to the operating member and is connected to a one-way clutch fixed to the frame of the head-mounted device via the friction force in a suppressed state by the first and second suppressing means. And
2. The head mounted type according to claim 1, wherein the release mechanism releases the connection between the one-way clutch and the rotating member by releasing the restrained state by the first and second restraining means. machine. The rotation member and the one-way clutch are connected via the frictional force by a rotation operation in the rotatable direction of the one-way clutch to the operation member,
The first operation is a rotation operation of the first rotation angle in the rotation prevention direction of the one-way clutch to the operation member, and the second operation is a step of moving the operation member in the rotation prevention direction. The head-mounted device according to claim 2, wherein the head-mounted device is a rotation operation at a second rotation angle larger than the first rotation angle.   The head-mounted device according to claim 3, wherein the first and second suppressing means shift to a suppressed state in a state where no action is applied to the operation member. The first and second suppressing means suppress rotation of the rotating member by connecting the rotating member and a frame of the head-mounted device by a frictional force,
In response to a rotation operation in the first rotation direction on the operation member, the first and second suppression means shift to a suppression state,
The first and second operations in the release mechanism are rotational operations with respect to the operation member in a second rotational direction opposite to the first rotational direction, and more than a rotational angle by the first operation. The head-mounted device according to claim 1, wherein a rotation angle by the second operation is larger. The first and second suppressing means suppress rotation of the rotating member by connecting the rotating member and a frame of the head-mounted device by a frictional force,
The operation member includes a portion capable of pushing in the rotation axis direction of the rotation member,
The first operation is a pushing operation by a first pushing amount of the portion in the rotation axis direction,
2. The head mounting according to claim 1, wherein the second operation is a pushing operation by a second pushing amount larger than the first pushing amount in the rotation axis direction of the portion. Mold equipment.

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