JPH09304724A - Optical visual device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To comfortably attach an optical visual device according to the individually varied shapes of heads by providing the device with a head belt adjustment means roughly adjusting the length of a head belt according to the circumference of the head and a buckle type ratchet mechanism finely adjusting the length of the head belt. SOLUTION: The length of the head belts 12A and 12B is roughly adjusted at the central position of the back of the head according to the circumference of the head. That means the rough adjustment corresponding to the circumference of the head is executed by sticking a scotch tape 12c to the proper position of a joined part 12d and peeling and deviating it from the joined part 12d when the adjustment is corrected. Then, the final adjustment is executed by a buckle 13. When the fine adjustment in the tightening direction of the head is executed by the ratchet mechanism of the buckle 13 executing the fine adjustment of the length of the belt according to the circumference of the head, the engagement projection of a switch piece is slid on the surface of the recessed and projecting part of a slide belt 14 while being engaged with it by generating ratchet noise.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical visual device (HMD: Head Mount Display) capable of viewing a television image or the like by mounting a display in front of the eyes, and particularly, a head having individual differences. The present invention relates to a mechanism capable of adjusting the length of a mounting portion according to the shape.

[0002]

2. Description of the Related Art Conventionally, a head mounted display 40 as shown in FIG. 8 is an example of an optical visual device capable of viewing a television image or the like by mounting the display at the eye position.

The head mounted display 40 is
It is composed of a display unit 2 for displaying a television image and the like, and a mounting unit 3 mounted on a human head. In the mounted state, from below the center of the front surface of the mounting unit 3, that is, from the front between the eyebrows of the wearer. The display unit 2 is hung and supported.

The display unit 2 is located in front of the wearer's eyes when worn, and has a goggle-shaped display body unit 4 including an LCD, a front cover 5, and a rear cover 6.
And a suspension member 7.

On the other hand, the mounting portion 3 has a curved quadrangular forehead pad portion 8 that comes into contact with the forehead at the time of mounting, and a curved front support member 9 along a substantially head circumference for locking the forehead pad portion 8 on the upper portion.
A pair of pivot support members 10 that are rotatably locked in the head direction with both ends of the front support member 9 as a base, and the pivot support members 10 are engaged with each other. And a suspender portion 11 that is mounted horizontally on the top of the head, and a head belt 12 that is locked to one end of the rotation support member 10 and is connected to the occipital region in a substantially horizontal direction.

The forehead pad portion 8 is composed of a forehead pad 15 and a forehead pad support portion 16. Forehead pad 15,
The surface of a cushioning member such as sponge covered with leather,
It is formed in a substantially rectangular shape, and the surface that contacts the forehead is bent according to the roundness of the forehead. The forehead pad 15 comes into contact with the forehead when worn, absorbs sweat from the forehead, and provides appropriate elasticity. On the other hand, the forehead pad support portion 16 is the forehead pad 1
5 is a curved plate-shaped member similar to that of FIG.
It has a structure in which it is erected on the upper part of the above, and the forehead pad 15 is attached to one side.

The front support member 9 is a rod-shaped member bent in an arc shape so as to match the shape of the forehead, and the forehead pad portion 8 is rotated in the upper part and the display portion 2 is rotated in the lower part with respect to the head. The structure is movably engaged. Further, the structure is such that the rotation support members 10 are engaged at both ends so as to be rotatable in the direction of approaching and approaching from the head.

The rotation supporting member 10 is a member having a substantially rectangular parallelepiped shape connected to the front surface supporting member 9, and has one end rotatably engaged with both ends of the front surface supporting member 9 in a direction in which the head moves toward and away from the head. There is. On the other hand, one end of the head belt 12 is fixed to the other end, and the rotation support member 1 is provided via the head belt 12.
It has a structure in which 0s are connected. Further, the upper surface is structured to fit with the suspender 18.

The suspender unit 11 includes a suspender 18 which hangs the wearer's head horizontally, a suspender cover 19 which accommodates the central portion of the suspender 18, and a connecting unit 20 which connects the suspender 18 and the rotation support member 10. It consists of

The suspender 18 has a suspender cover 19
It is a belt-shaped flat member that can expand and contract inside, is made of a flexible material such as rubber, and has a structure in which a sliding groove 21 for sliding the suspender cover 19 is provided in the central longitudinal direction. .

The suspender cover 19 is bent in an arc shape in accordance with the shape of the head, and the central portion is formed in a wide band shape, and the through hole 22 penetrating the suspender 18 is provided inside thereof.
And a cushioning member made of sponge or the like is attached to the lower surface to absorb the impact caused by contact with the head during mounting. Although not shown, an internal pin is provided at the center of the through hole 22, and the internal pin and the sliding groove 21 of the suspender 18 engage with each other to allow the suspender 18 to slide.

The connecting portion 20 is rotatably erected on the upper surface of the rotation supporting member 10, and the connecting protrusions erected on the upper surface of the rotating support member 10 and the connecting hole at the tip of the suspender 18 are fitted together. The joint is fixed.

The head belt 12 is an elastic belt made of rubber or the like, which is attached to the back of the head and has both ends hooked on the rotary support member 10, and can be expanded and contracted according to the head circumference that varies from person to person. Has become.

The head mount display 40 thus constructed can be mounted according to the head shape, especially the head circumference, which varies from person to person, by rotating the rotating support member 10 and expanding and contracting the head belt 12.

[0015]

However, it is extremely difficult to adapt the head mounted display 40 to the head circumferences of all persons because the human head circumferences vary from adult to adult by up to 13 centimeters. is there.

Further, since the head circumference of the head mounted display 40 is adjusted mainly by the expansion and contraction of the head belt 12 made of an elastic member such as rubber, there is no means for adjusting the head belt again after mounting. Further, when the head belt 12 is worn in a stretched state, the occipital region of the head is tightened due to its elastic force, blood congestion tends to occur, and it is difficult to obtain a comfortable wearing feeling.

Therefore, it is an object of the present invention to provide an optical visual device having a comfortable wearing feeling in conformity with a head shape having individual differences, particularly a head circumference.

[0018]

In order to solve the above-mentioned problems, an optical visual device according to the present invention comprises a display section for displaying an image and a mounting section for supporting the display in front of the eyes and mounting it on the head. An optical vision device comprising
In the mounting portion, head belt adjusting means for roughly adjusting the length of the head belt attached to the back of the head in a substantially horizontal direction according to the head circumference, and ratchet sound is generated at one end or both ends of the head belt. And a buckle type ratchet mechanism for fine adjustment.

By doing so, the length of the head belt is roughly adjusted according to the head shape having individual differences, particularly the head circumference, and fine adjustment is performed while wearing.
Since you can wear it without constantly tightening your head,
It is not necessary to attach and detach for each adjustment, and a comfortable fit can be obtained.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A head-mounted display 1 as shown in FIG. 1 will be described as a first embodiment of an optical visual device according to the present invention. For the sake of easy understanding, the same parts as those of the conventional technique will be described with the same reference numerals.

Head mounted display 1 shown in FIG.
Is composed of a display unit 2 and a mounting unit 3 like the head mounted display 40 shown in FIG. 8 described in the related art. The display unit 2 has a substantially goggle shape as in the related art. The display main body 4 having the above structure, a front cover 5, a rear cover 6, and a suspension member 7 are provided.

As in the conventional head mount display 40, the mounting portion 3 has a forehead pad portion 8, a front surface supporting member 9 for supporting the forehead pad portion 8 in front of the eye, and a front surface supporting member 9 rotatably engaged with the front surface supporting member 9. And a rotation support member 10 that is fixed to the head,
It includes a rotation support member 10 and a suspender portion 11 supported at the top of the head. Further, the head mounted display 1 is provided with a buckle 13 which is housed from one end side of the rotation support member 10 and a slide belt 14 whose base end is fixed to the rotation support member 10, and which is a buckle type ratchet mechanism. Make up. The buckle 13 has a structure in which a head belt 12A and a head belt 12B mounted on the back of the head are locked.
2A and 12B have a structure provided with an adjusting means for roughly adjusting the length. This adjusting means is a magic tape 12c and a joining portion 12 which can be locked at a substantially central position of the back of the head.
d.

The rotation support member 10 is formed in a substantially rectangular parallelepiped shape, and has a structure in which the front end portion is engaged with the end portion of the front surface support member 9 so as to be rotatable in a direction approaching and approaching the head. Further, the rear end portion is provided with an accommodation groove 10a for accommodating the buckle 13 and a belt-shaped slide belt 14 having a predetermined length extended rearward.

As shown in FIG. 2, the head belts 12A and 12B are for roughly adjusting the length at the central position of the occipital region according to the head circumference. One end of the elongated belt-like shape is attached to the end of the buckle 13. It has a structure in which a velcro tape 12c is adhered to the inner surface of the other side of the head belt 12A which is locked and adjusted. On the other hand, on the outer surface of the other end of the head belt 12B on the side to be adjusted, the velcro joining part 12
It has a structure with d attached.

For the rough adjustment according to the head circumference having such a structure, the velcro tape 12c is attached to an appropriate position of the joint portion 12d. When the readjustment is performed, the magic tape 12c is removed from the joining portion 12d and is adjusted, and the buckle 13 is used for final adjustment. In addition, the velcro tape 12c and the joint portion 1 for performing this rough adjustment.
The position of 2d is not limited to the center position of the back of the head, and may be provided in the vicinity of the buckle 13, for example.

Next, a modified example of the adjusting means for roughly adjusting the length of the belt on the back of the mounting portion 3 will be described.

A modified example of the adjusting means for roughly adjusting the length of the belt is a head belt 12E as shown in FIG.
This structure is formed by one elongated belt-shaped belt, and an adjusting means for roughly adjusting is provided on one end side. This adjusting means is composed of an adjusting protrusion 12g formed of a boss at the tip of one end, and a plurality of adjusting holes 12f provided in alignment with the adjusting protrusion 12g on the inner side.

The head belt 12 having such a structure
The rough adjustment by E first involves locking one side of the head belt 12E on one side of the buckle 13 and locking the other side of the head belt 12E on the side where the other side of the head belt 12E is provided. After bending through the belt hooking portion, the adjusting protrusions 12g are selected and inserted according to the approximate length of the head circumference. In this way, the length can be roughly adjusted according to the head circumference.

Next, the buckle 13 for finely adjusting the belt length according to the head circumference will be described. Buckle 13
As shown in FIG. 4, of the buckle type ratchet mechanism that is finely adjusted by the rotation support member 10 and the slide belt 14, the stepwise movement and ratchet sound are generated. A buckle body 13A having a space for sandwiching and sliding on 14 and a saw blade-shaped uneven portion 14 provided on the slide belt 14.
It is composed of a ratchet portion 13B which generates and moves a ratchet sound in a fixed direction which meshes with a and shortens the head belts 12A and 12B.

As shown in FIG. 5, the buckle body portion 13A is connected to the grip portion 13C and the grip portion 13C, each of which is formed to have the same size as the outer diameter of the rotation support member 10, and is approximately half the size. The guide portion 13d is guided by the accommodation groove 10a of the rotation support member 10. The guide portion 13d has a structure in which the outer periphery of the upper portion and the lower portion guides in the accommodation groove 10a, and an elongated opening portion 13e for accommodating the ratchet portion 13B is provided inside.

On the other hand, as shown in FIG. 5, the ratchet portion 13B is in the guide portion 13d of the buckle body portion 13A, and the fixing hole 13f vertically penetrates toward the grip portion 13c.
Is provided, and is formed into a long and narrow square shape that is a separate member,
A switch piece 13g whose side surface has a rounded wedge shape and whose upper surface is bent in an arc shape, a spring member 13h formed of a torsion coil spring, and a fixing hole 13 provided in a guide portion 13d.
It is composed of a cylindrical fitting support pin 13j arranged inside f and having a hollow central portion, and a cylindrical fixing pin 13k having a diameter slightly smaller than that of the fitting support pin 13j.

The switch piece 13g has a fitting hole 13m projecting from the center position of the bottom and a tip projecting to the wedge-shaped contracted bottom, and the spring member 1 is provided.
A meshing protrusion 13n with a notch for passing a spring of 3h,
The wedge-shaped expanded surface has a pressing portion 13p provided with a plurality of anti-slip projections.

The buckle 13 constituting the buckle type ratchet mechanism having such a structure can be assembled as follows. First, as shown in FIG. 5, the buckle body portion 13A is first fitted from the front end portion of the slide belt 14. Next, the fitting hole 13m of the switch piece 13g
The spring member 13h is inserted by aligning the spring member 13h. At this time, one end of the spring member 13h abuts on the ceiling inside the switch piece 13g, and the other end is engaged with a notch provided in the meshing protrusion 13n (not shown) so that the tip end thereof projects. Then, next, the fitting support pin 13j is fitted into the fitting hole 13
m from the upper part, and the opening 13e of the guide portion 13d
The fixing hole 13f and the fitting support pin 13j are aligned with each other, and the fixing hole 1
The fixing pin 13k is inserted into 3f to complete the process.

The switch piece 13g of the buckle 13 for fine adjustment assembled in this way is usually a spring member 1 protruding from the switch piece 13g as shown in FIG.
The guide portion 13d with the end 13q of 3h abutting on the ceiling surface of the inner end of the opening 13e and the other end 13r abutting the ceiling surface on the back side of the pressing portion 13p of the switch piece 13g.
Supported within. Therefore, the end portion 13r of the spring member 13h always maintains the upward urging force (in the direction of arrow R) in FIG. 6 with the ring portion of the spring member 13h mounted on the fitting support pin 13j and the end portion 13q as the base axes. . Therefore, the meshing protrusion 13n of the switch piece 13g is always meshed with the saw blade-shaped uneven portion 14a of the slide belt 14. The concave-convex portion 14a is a saw blade that rises to the right in FIG. 6, and the meshing protrusion 13n has a large taper shape on the left side, so that the buckle 13 moves to the right (the arrow P direction) in a meshing protrusion. 13n is the uneven portion 14
A ratchet sound can be generated and moved each time the convex portion of a is overridden, and fine adjustment can be performed to shorten the span between the convex portions. In FIG. 6, the movement in the left direction (the direction of arrow Q) prevents the movement because the tip portion of the meshing protrusion 13n meshes with the concave portion of the uneven portion 14a. That is, the structure is such that fine adjustment in the direction of tightening the head can be performed by one-touch operation of the buckle 13, and when tightening too much, the pressing portion 13p of the switch piece 13g that is constantly energized is pressed. By pressing, the meshing between the uneven portion 14a and the meshing protrusion 13n is disengaged, and the state becomes free as shown by the phantom line in FIG.

The head mounted display 1 thus mounted on the head is tightened by operating the buckle 13 having a buckle type ratchet mechanism after rough adjustment as shown in FIG. It is possible to make stepwise fine adjustments in the direction.

Here, when performing fine adjustment in the tightening direction of the head by the ratchet mechanism of the buckle 13,
As shown in FIG. 6, the ratchet sound is generated and slides while the meshing protrusion 13n of the switch piece 13g meshes with the surface of the uneven portion 14a of the slide belt 14. Since the position of this buckle is near the ear, it is desirable that the ratchet sound is as comfortable as possible without noise.

That is, this ratchet sound is generated by the buckle 13
It is useful in that it is possible to confirm that the sliding has occurred, but the meshing protrusion 13n and the uneven portion 1 of the slide belt 14 are
When both parts 4a are made of hard members, the sound becomes too loud, which is rather annoying to the wearer.

Therefore, in the head mounted display 1, a soft member is attached to the engagement protrusion 13n of the buckle 13,
For example, the elastomer may be integrally molded by one-color or two-color molding to reduce the click sound and reduce the annoyance. The material is not limited to the elastomer, and the shape of the uneven portion 14a of the slide belt 14 suitable for fine adjustment described above may be modified to change the degree of fine adjustment and the sound quality of ratchet sound. It goes without saying that both may be improved.

Next, a modified example of the buckle 13 composed of the above-described buckle type ratchet mechanism for finely adjusting the belt will be described. A modified example of the buckle 13n is shown in FIG.
As shown in FIG. 1, the through passage 1 through which the slide belt 14 is inserted
The structure is provided with a so-called soft brake mechanism that contacts the back side of the slide belt 14 in 3s to suppress a light movement.

As shown in FIG. 6, the soft brake mechanism is provided with a boss 13r provided so as to come into contact with the rear surface of the slide belt 14n, which is the side surface forming the through passage 13s and opposite to the surface of the uneven portion 14a of the slide belt 14n. It is configured. By providing such a boss 13r, it is possible to apply an appropriate frictional force to the free movement of the buckle 13 for fine adjustment in a fixed direction of shortening the belt of the buckle 13 (P direction), and the buckle 13 It is possible to easily prevent excessive movement. Therefore, the ratchet mechanism has a structure that facilitates fine adjustment.

In FIG. 6, the position of the boss 13r is
A position near the meshing protrusion 13n of the switch piece 13g is effective, but not limited to this position. Further, the boss 13r may be a dot-shaped projection or a linear projection, and in short, any soft brake mechanism that can freely move in a certain direction while being ratcheted by the switch piece 13g may be used.

Next, an optical visual device according to a second embodiment of the present invention will be described with reference to FIG. The same parts as those in FIG. 4 used in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The optical visual system of the second embodiment, as shown in FIG. 7, relates to a buckle 13 for finely adjusting the belt length by a buckle type ratchet mechanism.

That is, the buckle 13 is composed of a buckle body portion 13A composed of a housing and a ratchet portion 13B provided with a ratchet mechanism provided in the buckle body portion 13A. The ratchet portion 13B is the same as that of the first embodiment. It has a structure.

The buckle body 13A has a guide portion 13d.
The guide groove 13t is formed by extending the tip side of the guide groove 13a. The accommodation groove 10a provided in the rotation support member 10 is formed to have a length capable of accommodating the guide protrusion 13t.

In the buckle 13 having such a structure, when the slide belt 14 is slid to make a fine adjustment, the guide protrusion 13t does not come out of the accommodation groove 10a even when the slide belt 14 is adjusted to be the longest. Therefore, it is possible to prevent the twisting of the slide belt 14 that occurs when the buckle 13 is completely pulled out, and to prevent a malfunction of the operability when the buckle 13 is completely pulled out from the housing groove 10. ing.

[0047]

As described above, in the optical visual device according to the present invention, the head belt adjusting means for roughly adjusting the length of the head belt mounted on the back of the head according to the head circumference, and the length of the head belt. Since it is equipped with a buckle-type ratchet mechanism for fine adjustment, it can be comfortably worn according to the head shape with individual differences, and no discomfort is felt even when used for a long time.

Further, since the head belt adjusting means can roughly adjust and the ratchet mechanism can finely adjust, the attachment / detachment for each adjustment can be reduced and the operability can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a head mounted display which is a first embodiment of an optical visual device according to the present invention.

FIG. 2 is an explanatory diagram showing a head belt of the head mounted display.

FIG. 3 is an explanatory diagram showing a modified example of a head belt of the head mounted display.

FIG. 4 is an explanatory diagram showing a slide of a buckle of the head mounted display.

FIG. 5 is an exploded perspective view showing a buckle of the head mounted display.

FIG. 6 is an explanatory view showing a meshing portion between a buckle and a slide belt of the head mounted display.

FIG. 7 is an explanatory diagram showing a slide of the buckle of the head mounted display according to the second embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a conventional head mounted display.

[Explanation of symbols]

1: Head Mounted Display 2: Display Part 3: Mounting Part 4: Display Main Body 5: Front Cover 6: Rear Cover 7: Hanging Member 8: Forehead Pad Part 9: Front Support Member 10: Rotation Support Member 10a, 10b : Storage groove 11: Suspenders 12, 12A, 12B, 1
2E: Head belt 12c: Velcro 12
d: joining part 12f: adjusting hole 12g: adjusting protrusion 1
3: Buckle 13A: Buckle body 13B: Ratchet 13
c: gripping portion 13d: guide portion 13e: opening portion 13
f: fixing hole 13g: switch piece 13h: spring member
13j: Fitting support pin 13k: Fixing pin 13m: Fitting hole 13n: Engagement protrusion 13p: Pressing portion 13q: End portion 13r: Boss 13s: Through path 13t: Guide protrusion 14: Slide belt 14a: Uneven portion 15: Forehead Pad 16: Forehead pad support 18: Suspender 19: Suspender cover 20: Connection 21: Sliding groove 22: Through hole 40: Conventional head mount display

Claims (7)

[Claims] 1. An optical visual device comprising a display unit for displaying an image and a mounting unit for supporting the display unit in front of the eyes and mounting the head unit on the head. Head belt adjusting means for roughly adjusting the head belt attached to the head circumference, and a buckle type ratchet mechanism for making a fine adjustment by producing a ratchet sound at one end or both ends of the head belt. An optical visual device comprising: 2. The head belt adjusting means for performing the rough adjustment includes a magic tape (registered trademark) capable of adjusting the length and joining the head belt at an arbitrary position. 1. The optical visual device according to 1. 3. A plurality of head belt adjusting means for performing the rough adjustment are provided at a predetermined position from one end or both ends of the head belt and are aligned in the length direction of the head belt. 2. The optical visual device according to claim 1, further comprising: a hole and a projection that can be fitted into the plurality of holes at one end or both ends. 4. The buckle-type ratchet mechanism includes a slide belt having a saw-toothed blade-shaped uneven portion, and a buckle connected to an end of the head belt slidably engaged with the slide belt. The optical visual device according to claim 1, wherein the buckle is provided with a meshing portion that meshes with the uneven portion in a certain direction to slide. 5. The optical visual device according to claim 4, wherein the buckle is adapted to press the appropriate position of the slide belt to apply a soft brake. 6. The optical visual device according to claim 4, wherein the engaging portion and / or the uneven portion of the slide belt is formed of a soft member. 7. The optical visual device according to claim 4, wherein the buckle is provided with a guide member for guiding in the slide belt direction.