JP5004751B2 - Head-mounted device - Google Patents

Description

  The present invention relates to a mounting mechanism for a head-mounted device.

  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 because it allows easy viewing of images on a large screen, easy stereoscopic viewing, and movement with an observer. In the mounting mechanism of the HMD, a forehead pressing part for pressing the forehead and a occipital pressing part for pressing the occipital area are provided, and the occipital pressing part is moved back and forth to press or loosen the head. In general, the HMD can be attached and detached.

Moreover, what provided the press part which presses a head in several positions is proposed in order to reduce the discomfort produced when pressing a head (refer patent document 1). Furthermore, the helmet type thing which covers and wears the whole head is also proposed (refer patent document 2).
Japanese Patent Laid-Open No. 10-123452 Japanese Patent No. 03038988

  In order to hold the head-mounted device firmly on the head, it is necessary to increase the sum of the pressing forces applied to the head of the wearer. However, even if a mechanism that can increase the sum of the pressing forces is provided, depending on the pressing position, the discomfort increases as the pressing force increases. For example, in a type in which pressing is performed at two locations of the frontal and occipital areas, tightening is performed with a high pressing force depending on how the wearer adjusts.

  However, since there are two pressing portions, one for the frontal region and one for the rearal region, the pressing force per location is high, which may cause discomfort during wearing. In addition, in the helmet type, covering the entire head makes the wearer feel a sense of pressure, or presses the temple of the wearer who is sensitive to pressure, causing discomfort during wearing . Furthermore, although the mounting mechanism in the prior art is defined with respect to the pressing position, there is no explicit relationship between the pressing position and the pressing force.

  The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to reliably hold the device main body on the head without feeling uncomfortable even if the pressing force to the head is increased. .

To achieve the above object, a head-mounted device according to an aspect of the present invention is provided.
A head-mounted device that is used by mounting the device body on the user's head,
In order to hold the device main body to the wearer's head, the frontal head pressing portion that presses the frontal head of the wearer, the back head pressing portion that presses the back head, and the temporal head that presses each of both side heads A pressing means having a part pressing part and a occipital side pressing part that presses the occipital side part between the temporal and occipital areas;
A pressing force generating mechanism that generates a pressing force to the head by the occipital region pressing unit and the occipital side surface pressing unit;
When the head-mounted device is mounted, the pressing force of the occipital side pressing portion by the pressing force generation mechanism is larger than the pressing force of the occipital pressing portion by the pressing force generation mechanism.

In order to achieve the above object, a head-mounted device according to another aspect of the present invention includes:
A head-mounted device that is used by mounting the device body on the user's head,
In order to hold the device main body to the head, the forehead pressing part that presses the frontal part of the wearer, the occipital part pressing part that presses the occipital part, and the occipital side part between the temporal part and the occipital part are pressed. A pressing means having a occipital side pressing portion;
A pressing force generating mechanism that generates a pressing force to the head by the occipital region pressing unit and the occipital side surface pressing unit;
When the head-mounted device is mounted, the pressing force of the back head pressing portion by the pressing force generation mechanism is larger than the pressing force of the back head side pressing portion by the pressing force generation mechanism.

  According to the present invention, the device main body can be securely held on the head without feeling uncomfortable even if the pressing force on the head is increased.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, an HMD will be described as an example of a head-mounted device that is used by mounting the device main body on a user's head.

[First Embodiment]
FIG. 1 is a perspective view showing an HMD according to the first embodiment. The HMD of this embodiment includes a display unit 1 that displays an image and a mounting unit 2 that holds the display unit 1 on the observer's head. The display unit 1 is composed of a display element and an optical system (neither is shown) for enlarging the image of the display element, and the image is guided to the observer's pupil. The mounting part 2 has a shape surrounding the periphery of the head, and has a frame 21 as a rigid frame member. The mounting portion 2 includes a forehead pressing portion 22 that presses the forehead, a side head pressing portion 23 that presses the temporal region, a occipital pressing portion 24 that presses the occipital region, and the occipital region between both heads and the occipital region. A occipital side surface portion pressing portion 25 that presses the side surface portion is provided, and each pressing portion is disposed on the frame 21.

  The forehead pressing portion 22 includes a forehead pressing pad 22a and a forehead pressing pad mounting base 22b for mounting the forehead pressing pad 22a. The forehead pressing pad 22a has a width that does not cover the left and right temples of the observer, and is fixed integrally with the display unit 1. The temporal pressing portion 23 is made of a low-repulsive polyurethane material and is fixed to the left and right of the inner periphery of the frame 21. The back head pressing portion 24 and the back head side surface pressing portion 25 are engaged with the frame 21 so as to be linearly movable in the pressing direction.

  FIG. 2 is a cross-sectional view showing a connection structure between the frame 21 and the back head pressing portion 24. The pressing force generation mechanism by the HMD of this embodiment will be described with reference to FIG. The back head pressing portion 24 includes a back head pressing pad 24a and a back head pressing pad mounting base 24b. Further, the rear head pressing pad mounting base 24b is provided with an engaging portion 24c that engages with the frame 21, and has a screw portion 24d inside thereof. Further, the engaging portion 24 c has a rectangular cross-sectional shape so as not to rotate with respect to the frame 21. A motor 31 is attached in the frame 21. A motor screw 32 that is screwed into the screw portion 24d of the back head pressing pad mounting base 24b is integrated with the rotating shaft of the motor 31. The connection structure between the frame 21 and the back head side surface pressing portion 25 is the same.

  A pressure sensor 26 is provided inside the pads of the occipital region pressing portion 24 and the occipital side surface portion pressing portion 25. A switch 27 for operating the motor 31 connected to the occipital region pressing portion 24 and the occipital side surface portion pressing portion 25 is provided at the lower right portion of the frame 21. The switch 27 can take three states of F (tightening direction), OFF, and R (relaxing direction), and is configured to be OFF when not operated. As described above, the occipital region pressing unit 24 and the occipital region side pressing unit 25 include a motor 31 as a driving unit that moves each pressing pad in the pressing direction, and a pressure sensor as a detecting unit that detects the pressing force applied to the pressing pad. 26 is provided. Based on the pressing force detected by the pressure sensor 26, the pressing force to the head by the occipital head pressing part 24 and the occipital side pressing part 25 by the motor 31 as a driving part is controlled.

  The observer puts the switch 27 in the frame 21 to the F side while aligning the display unit 1 at a position where the image can be seen. In response to the input signal of the switch 27, the motor 31 electrically coupled to the switch 27 rotates, and the motor screw 32 integrated therewith rotates. Since the screw parts of the occipital region pressing part 24 and the occipital side surface part pressing part 25 are screw-fitted with the motor screw 32, the respective pressing pads move straight in the direction of the observer's head. The pressing force applied to the head by the occipital pressing unit 24 and the occipital side pressing unit 25 is such that the pressing force of the occipital side pressing unit 25 is always greater than the pressing force of the occipital pressing unit 24 by the pressure sensor 26. Be controlled. The maximum pressing force is set for each of the back head pressing portion 24 and the back head side surface pressing portion 25, and the motor 31 is controlled to stop when the pressing force is reached.

  The temporal head pressing portion 23 lightly presses the temporal region of the observer with a low repulsive polyurethane material. Moreover, since it has low resilience, even if the size of the head is different, the difference in the pressing force depending on the shape can be reduced.

  When removing the HMD, by putting the switch 27 to the R side, the respective motors 31 of the occipital region pressing portion 24 and the occipital side surface portion pressing portion 25 are rotated reversely, and the respective pressing portions are lowered rearward, and the pressing is released. .

  With the above-described mechanism, the observer can hold the HMD with a pressing force such that the pressing force of the occipital side surface pressing portion 25 is larger than the pressing force of the occipital pressing portion 24 just by putting the switch 27 in the F direction. can do.

  As described above, according to the pressing force generation mechanism of the above-described embodiment, in the head mounting mechanism in which the pressing position to the wearer's head is `` frontal head, back head, temporal head, back head side surface '', The pressing force on the occipital side surface is larger than the pressing force on the occipital region. The verification result that the sum of the pressing force until the uncomfortable feeling to the pressing to the head increases due to the combination of the pressing position and the pressing force is obtained by the verification using the subject. Yes. Therefore, according to the head mounting mechanism and the pressing force generation mechanism of the above embodiment, the sum of the pressing forces on the wearer's head can be increased.

  In the case where the temporal pressing portion is not provided, the control is performed so that the pressing force of the occipital pressing portion 24 is always larger than the pressing force of the occipital side pressing portion 25 contrary to the above.

  That is, when the pressing position of the head mounting mechanism on the wearer's head is “frontal head, back of head, back side of the head”, the pressing force on the back of the head is greater than the pressing force of the back of the head Thus, the pressing force generation mechanism is configured. The verification result that the sum of the pressing force until the uncomfortable feeling to the pressing to the head increases due to the combination of the pressing position and the pressing force is obtained by the verification using the subject. Yes. Therefore, according to the head mounting mechanism and the pressing force generation mechanism, the sum of the pressing forces on the wearer's head can be increased.

[Second Embodiment]
FIG. 3 is a perspective view showing an HMD according to the second embodiment. The description of the same configuration as that of the first embodiment is omitted.

  The frame 21 of the mounting portion 2 includes a front frame 21F and a rear frame 21R. The rear frame 21R is engaged with the front frame 21F so as to be movable back and forth. Adjusters 28 for adjusting the front and rear positions of the rear frame 21R are provided at the left and right positions of the rear frame 21R, respectively. The adjustment unit 28 has, for example, a ratchet mechanism, and is movable in the forward direction but locked in the backward direction. As described above, in the pressing force generation mechanism of the second embodiment, each pressing portion is arranged, and the pressing of the occipital pressing portion 24 and the occipital side pressing portion 25 is performed by changing the peripheral length of the frame member surrounding the periphery of the head. Press the head against the pad. Further, the adjustment unit 28 also has a lock release mechanism. The observer can release the lock by operating the lock release mechanism, and can move the rear frame 21R backward.

  FIG. 4A is a cross-sectional view of the HMD when an observer with a small head wears the HMD of the second embodiment. Inside the occipital region pressing part 24 and the occipital region side surface pressing part 25, the occipital region urging spring is provided so that the pressing pads of the occipital region pressing part 24 and the occipital region side part pressing unit 25 always apply the pressing force to the observer's head. 24e, and a back head side portion biasing spring 25e. Both the occipital head urging spring 24e and the occipital side surface urging spring 25e have a low spring constant so that the difference in force due to deformation is small in the movable range of the occipital region pressing part 24 and the occipital side surface part pressing part 25. . FIG. 4B is a cross-sectional view of the HMD when an observer with a large head is worn.

  The observer moves the adjusting units 28 on the left and right of the rear frame 21R in the forward direction while aligning the display unit 1 at a position where the image can be seen, and presses the head with the back head pressing unit 24 and the back head side surface pressing unit 25. Get holding power. Since the spring constants of the occipital head urging spring 24e and the occipital side surface urging spring 25e are low, the difference in pressing force depending on the size of the observer's head can be reduced. Further, in each movable range of the back head pressing portion 24 and the back head side surface portion 25, the spring force of the back head side portion biasing spring 25e is made stronger than the spring force of the back head pressing spring 24e. By setting the spring force in this way, any observer can always increase the pressing force on the occipital side surface than the pressing force on the occipital region.

  As mentioned above, according to 2nd Embodiment, the pressing force to the head by the back head pressing part 24 and the back head side pressing part 25 is adjusted with an elastic member. That is, between the pressing pads of the occipital region pressing portion 24 and the occipital side surface pressing portion 25 and the frame 21, the occipital region biasing spring 24e as an independent spring member for urging each pressing pad in the pressing direction, A biasing spring 25e is provided. In each movable range of the back head pressing portion 24 and the back head side surface portion 25, the spring force of the back head side portion biasing spring 25e is made stronger than the spring force of the back head pressing spring 24e. Thus, a pressing force generation mechanism is formed that increases the pressing force of the occipital side pressing portion more than the pressing force of the occipital pressing portion when the head mounted device is mounted. Therefore, also in the head mounting mechanism of the second embodiment, the same effect as that of the first embodiment can be obtained.

  As in the first embodiment, when the pressing position of the head mounting mechanism on the wearer's head is “frontal, occipital, and occipital side portions”, the pressing force applied to the occipital region is the occipital side portion. The pressing force generating mechanism is configured so as to be larger than the pressing force. That is, by applying the spring force of the back head urging spring 24e to be stronger than the spring force of the back head side portion urging spring 25e, the present invention can be applied even when the side head pressing portion 23 is not provided.

[Third Embodiment]
FIG. 5 is a plan view showing an HMD according to the third embodiment. The description of the same configuration as in the first and second embodiments is omitted. In 3rd Embodiment, it has the structure which does not have the temporal part press part which presses a temporal part. Also in the third embodiment, a structure in which each pressing portion is arranged and the head is pressed by the pressing pads of the occipital pressing portion 24 and the occipital side pressing portion 25 by changing the peripheral length of the frame 21 surrounding the periphery of the head. Is used.

  Between the back head pressing portion 24 and the rear frame 21R, a back head biasing spring 24e as a first spring member that biases the pressing pad in the pressing direction between the pressing pad of the back head pressing portion 24 and the frame 21 is provided. Is provided. The back head pressing pad mounting base 24b is coupled to be movable back and forth via the back head side surface pressing pad mounting base 25b and the leaf spring 34. The leaf spring 34 is a second spring member that links the pressing pads such that the pressing pad of the occipital side pressing portion 25 is biased in the pressing direction in accordance with the movement of the pressing pad of the occipital pressing portion 24 in the direction of the frame 21. Function as. Further, the two leaf springs 34 (34L, 34R) rotate around the rotation shaft 33 (33L, 33R), respectively. Further, the rear head urging spring 24e and the leaf spring 34 have a low spring constant. Therefore, the change in force due to the difference in the amount of deformation of the spring is small.

  FIG. 6 is a plan view when the HMD according to the third embodiment is mounted. As in the second embodiment, the observer moves the adjustment units 28 on the left and right of the rear frame 21R in the forward direction while aligning the display unit 1 at a position where the image can be seen. When the rear frame 21R moves in the forward direction, the back head pressing portion 24 presses the back head. Further, when the back head pressing portion 24 is pressed to the frame 21R side by the reaction force, the left and right leaf springs 34 rotate in the A and B directions around 33, respectively. Thereby, the occipital side surface pressing portion 25 presses the occipital side surface portion of the observer. Since the spring constants of the rear head urging spring 24e and the leaf spring 34 are low, the difference in the pressing force due to the difference in the size of the observer's head is small. In each movable range of the back head pressing portion 24 and the back head side surface pressing portion 25, the spring force of the back head biasing spring 24e as the first spring member is the spring force of the leaf spring 33 as the second spring member. It has become larger than. Therefore, any observer can always press the occipital region more strongly than the occipital region. Therefore, the same effect as that of the first embodiment can be obtained.

  In the case of having the side head pressing portion, contrary to the above, the occipital side surface urging spring 25e as the second spring member rather than the spring force of the occipital portion urging spring 24e as the first spring member. The spring force can be increased.

[Fourth Embodiment]
FIG. 7 is a perspective view showing an HMD according to the fourth embodiment. The description of the same configuration as in the first to third embodiments is omitted. The fourth embodiment is characterized in that it has a back head pressing portion 29 in which a back head pressing portion and a back head side surface pressing portion are integrated.

  The occipital region pressing portion 29 includes a occipital region pressing pad 291 for pressing the occipital region, occipital region side surface pressing pads 292R and 292L for pressing the left and right occipital region portions, and an occipital region pressing pad mounting base 29b for attaching these pads. The back head pressing pad mounting base 29b is made of a plate-like elastic member having a curved shape with a smaller curvature than the head shape when not mounted. Further, the back head pressing pad mounting base 29b has such a shape that the spring constant becomes low. Further, the back head pressing portion 29 is connected to the rear frame 21R via a connecting member 29c, and a back head biasing spring 29e (see FIG. 9) is provided between the back head pressing pad mounting base 29b and the rear frame 21R. Is provided. That is, the back head urging spring 29e is provided between the frame 21 and the plate-like elastic member, and functions as an elastic member that urges the plate-like elastic member toward the head. The back head urging spring 29e has a shape with a low spring constant so that the difference in force due to deformation is small in the movable range of the back head pressing portion 29.

  FIG. 8 is a plan view of the HMD in the fourth embodiment, and FIG. 9 is a plan view of the HMD when the HMD in the fourth embodiment is mounted. As in the second embodiment, the observer moves the adjustment units 28 on the left and right of the rear frame 21R in the forward direction while aligning the display unit 1 at a position where the image can be seen. By moving the rear frame 21R in the forward direction, the back head pressing portion 29 moves in the forward direction. Since the curvature of the back head pressing pad mounting base 29b is small, the observer's head pushes the back head pressing pad mounting base 29b in the direction of the arrow in the figure via the back head pressing pads 292R and 292L. Therefore, the observer's occipital region is pressed by the reaction force of the occipital region pressing pad mounting base 29b. Further, the occipital region is pressed by the occipital region pressing pad 291. Thus, the pressing force generation mechanism of the fourth embodiment applies pressing force to the occipital region pressing pad mounting base 29b, which is a plate-like elastic member, by the occipital region biasing spring 29e, and generates the urging force of the occipital region pressing portion 24. . Then, the pressing force of the occipital side pressing portion 25 is generated by the restoring force to the curved shape of the occipital pressing pad mounting base 29b. Here, since the spring constants of the back head urging spring 29e and the back head pressing pad mounting base 29b are low, the difference in the pressing force due to the difference in the size of the observer's head is small. Further, in each movable range of the back head pressing portion 29 and the back head side surface portion pressing pad mounting base 29b, the spring force of the back head biasing spring 29e is larger than the spring force of the back head side surface pressing pad mounting base 29b. It has become. Therefore, any observer can always press the occipital region more strongly than the occipital region. Therefore, the same effect as that of the first embodiment can be obtained.

  In the case where the head mounting mechanism has a temporal pressing portion, contrary to the above embodiment, the spring force of the occipital side surface pressing pad mounting base 29b is stronger than the spring force of the occipital biasing spring 29e. do it.

As described above, according to each of the embodiments described above, the relationship between the pressing position and the pressing force is adjusted according to the configuration of the pressing portion so that the wearer does not feel uncomfortable due to an increase in the sum of the pressing forces. Is done. Therefore, according to the head mounting mechanism and the pressing force generation mechanism of each of the embodiments described above, the sum of the pressing forces on the wearer's head can be increased, and the wearer can more reliably do not feel uncomfortable. The HMD can be held on the head.

1 is a perspective view of an HMD in Embodiment 1. FIG. It is a fragmentary sectional view of a back head pressing means. It is a perspective view of HMD in Embodiment 2. FIG. It is sectional drawing of HMD in Embodiment 2. FIG. 6 is a plan view of an HMD according to Embodiment 3. FIG. It is a top view at the time of mounting | wearing with HMD in Embodiment 3. FIG. It is a perspective view of HMD in Embodiment 4. 6 is a plan view of an HMD in Embodiment 4. FIG. It is a top view at the time of mounting HMD in Embodiment 4.

Claims (7)

A head-mounted device that is used by mounting the device body on the user's head,
In order to hold the device main body to the wearer's head, the frontal head pressing portion that presses the frontal head of the wearer, the back head pressing portion that presses the back head, and the temporal head that presses each of both side heads A pressing means having a part pressing part and a occipital side pressing part that presses the occipital side part between the temporal and occipital areas;
A pressing force generating mechanism that generates a pressing force to the head by the occipital region pressing unit and the occipital side surface pressing unit;
When the head mounted device is mounted, the pressing force of the occipital side pressing portion by the pressing force generation mechanism is larger than the pressing force of the occipital pressing portion by the pressing force generation mechanism. Wearable equipment. A head-mounted device that is used by mounting the device body on the user's head,
In order to hold the device main body to the head, the forehead pressing part that presses the frontal part of the wearer, the occipital part pressing part that presses the occipital part, and the occipital side part between the temporal part and the occipital part are pressed. A pressing means having a occipital side pressing portion;
A pressing force generating mechanism that generates a pressing force to the head by the occipital region pressing unit and the occipital side surface pressing unit;
When the head-mounted device is mounted, the pressing force of the occipital pressing portion by the pressing force generating mechanism is larger than the pressing force of the occipital side pressing portion by the pressing force generating mechanism. Wearable equipment. The pressing force generating mechanism is
A drive unit for moving the pressing pads of the occipital region pressing unit and the occipital side surface pressing unit in the pressing direction;
A detection unit for detecting a pressing force applied to the pressing pad,
3. The head according to claim 1, wherein a pressing force to the head by the occipital pressing portion and the occipital side pressing portion by the driving portion is controlled based on a pressing force detected by the detection portion. Part-mounted equipment. Each pressing part of the pressing means is arranged, and has a frame member surrounding the head,
The pressing force generating mechanism is
By changing the perimeter of the frame member, the head is pressed by the pressing pads of the occipital pressing portion and the occipital side pressing portion,
The head-mounted device according to claim 1, further comprising an elastic member that adjusts a pressing force applied to the head by the back head pressing portion and the back head side pressing portion.   The independent spring member which urges | biases each press pad to a pressing direction between each press pad of the said back head pressing part and the said back head side surface pressing part, and the said frame member is provided. The head-mounted device described in 1. A first spring member for biasing the pressing pad in the pressing direction is provided between the pressing pad of the back head pressing portion and the frame member,
The pressing pad of the occipital side pressing portion is pressed against the occipital side so that the pressing pad of the occipital side pressing portion is biased in the pressing direction in accordance with the movement of the pressing pad of the occipital pressing portion in the direction of the frame member. The head-mounted device according to claim 4, further comprising a second spring member linked to the pressing pad of the portion. A plate-like elastic member having a curved shape in the pressing direction, in which the occipital region pressing portion and the occipital side surface pressing portion are disposed;
A spring member for biasing the plate-like elastic member in the head direction between the frame member and the plate-like elastic member;
5. The pressing force of the occipital side pressing portion is generated by the spring member, and the pressing force of the occipital side pressing portion is generated by the restoring force of the plate-like elastic member to the curved shape. The head-mounted device described.

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