Head-mounted display
A head-mounted display ( 10 ) according to the present disclosure, includes: a front block ( 100 ) that supports a display unit to be disposed in front of an eye of a user; a rear block ( 300 ) that is to be disposed on a back side of a head of the user; and a plurality of elastic bodies ( 230, 340 ) that extend along a belt for linking the front block ( 100 ) to the rear block ( 300 ). Each of the plurality of elastic bodies ( 230, 240 ) has one end fixed to the belt and another end fixed to a predetermined position in the rear block ( 300 ).
1. A head-mounted display, comprising:
a front block that supports a display unit to be disposed in front of an eye of a user;
a rear block that is to be disposed on a back side of a head of the user, wherein
the rear block includes a pad member on a side of the head of the user,
the pad member includes a projection on an opposing surface of the pad member to be opposed to the back side of the head of the user, and
in a case where the rear block is disposed on the back side of the head of the user, the projection abuts on the head of the user in a region different from a region corresponding to a backmost part of the head of the user;
a belt that links the front block to the rear block; and
a plurality of elastic bodies that extends along the belt that links the front block to the rear block,
wherein each of the plurality of elastic bodies has a first end that is fixed to the belt and a second end that is fixed to a specific position in the rear block.
2. The head-mounted display according to claim 1 , wherein the rear block further includes a rail along which the belt and the plurality of elastic bodies slide.
3. The head-mounted display according to claim 2 , wherein
the rear block further includes a rail cover that is opposed to the rail across at least one of the belt or one of the plurality of elastic bodies, and
the rail cover defines an amount of elongation of the plurality of elastic bodies.
4. The head-mounted display according to claim 3 , wherein
the belt includes
a first belt that links a first end of the front block to a first end of the rear block corresponding to the first end of the front block, and
a second belt that links a second end of the front block to a second end of the rear block in such a manner that the second belt is opposed to the first belt,
among the plurality of elastic bodies, a first elastic body has one end that is fixed to the first belt,
among the plurality of elastic bodies, a second elastic body has one end that is fixed to the second belt,
the second elastic body is different from the first elastic body,
the rail cover is opposed to the rail across at least one of the first belt, the first elastic body, the second belt, or the second elastic body, and
the rail cover defines an amount of elongation of the first elastic body and an amount of elongation of the second elastic body.
5. The head-mounted display according to claim 4 , wherein
a rail-cover-side surface of the first belt includes
a first protrusion at an end of the first belt, and
a second protrusion at a position to which the first elastic body is fixed,
a rail-cover-side surface of the second belt includes
a third protrusion at an end of the second belt, and
a fourth protrusion at a position to which the second elastic body is fixed, and
the rail cover has
a first hole that allows the first protrusion to move therein,
a first engagement part that engages with the second protrusion,
a second hole that allows the third protrusion to move therein, and
a second engagement part that engages with the fourth protrusion.
6. The head-mounted display according to claim 5 , wherein
a maximum amount of elongation of the first elastic body is defined in a case where the first protrusion abuts on one of inner surfaces of the first hole,
a minimum amount of elongation of the first elastic body is defined in a case where the second protrusion engages with the first engagement part,
a maximum amount of elongation of the second elastic body is defined in a case where the third protrusion abuts on one of inner surfaces of the second hole, and
a minimum amount of elongation of the second elastic body is defined in a case where the fourth protrusion engages with the second engagement part.
7. The head-mounted display according to claim 4 , wherein
the rail includes
a first guide part that guides at least one of the first belt or the first elastic body to slide, and
a second guide part that guides at least one of the second belt or the second elastic body to slide, and
the first guide part and the second guide part are in parallel on the rail along a height direction of the head of the user.
8. The head-mounted display according to claim 4 , wherein the first elastic body and the second elastic body are in an inside of the rear block.
9. The head-mounted display according to claim 1 , wherein
the pad member further includes a plurality of projections,
the plurality of projections includes the projection,
each of the plurality of projections has a centroid that passes through the region corresponding to the backmost part of the head of the user and is at a position substantially symmetric about an axis in a direction from the front block to the rear block.
10. The head-mounted display according to claim 1 , wherein the projection of the pad member comprises four projections.
11. The head-mounted display according to claim 1 , wherein the projection has a ring-like shape.
12. A head-mounted display, comprising:
a front block that supports a display unit to be disposed in front of an eye of a user;
a rear block that is to be disposed on a back side of a head of the user;
a first belt that links a first end of the front block to a first end of the rear block corresponding to the first end of the front block;
a second belt that links a second end of the front block to a second end of the rear block in such a manner that the second belt is opposed to the first belt;
a first elastic body that has a first end fixed to the first belt and a second end fixed to a first position in the rear block; and
a second elastic body that has a first end fixed to the second belt and a second end fixed to a second position in the rear block, wherein
the second elastic body is different from the first elastic body,
the rear block includes:
a rail along which the first belt, the second belt, the first elastic body, and the second elastic body slide, and
a rail cover that is opposed to the rail across at least one of the first belt, the first elastic body, the second belt, or the second elastic body,
the rail cover defines an amount of elongation of the first elastic body and an amount of elongation of the second elastic body, and
the first elastic body and the second elastic body are in an inside of the rear block.