Head mounted display

Patent metadata

Field	Value
Publication number	US-11199717-B2
Application number	US-201817040503-A
Country	US
Kind code	B2
Filing date	Apr 3, 2018
Priority date	Mar 23, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

The present disclosure relates to a head mounted display comprising: a body mounted on a user's facial region and including a display for providing image information; and a wearable member configured to support the body and be mounted on the user's head, wherein the wearable member comprises: a front band part formed to have a rounded shape so as to be stably placed on the front of the user's head; hinge members supporting both ends of the body and allowing the body to be pivoted upward/downward or slid forward/backward; and a rear band part formed to surround the back of the user's head, fixed to both sides of the front band part, and configured to support the hinge members when the hinge members move.

First claim

The invention claimed is:

1. A Head Mounted Display (HMD) comprising:
a body mounted on a user's facial region and including a display for providing image information; and
a wearable member configured to support the body and be mounted on the user's head,
wherein the wearable member comprises:
a front band part formed to have a rounded shape so as to be stably placed on the front of the user's head;
hinge members supporting both ends of the body and allowing the body to be pivoted upward/downward and slid forward/backward; and
a rear band part formed to surround the back of the user's head, fixed to both sides of the front band part, and configured to support the hinge members when the hinge members move,
wherein the hinge member comprises:
a first member having a first through hole formed through a central portion thereof, and having one side coupled to the body to be rotatable;
a second member having a second through hole formed through a central portion thereof to correspond to the first through hole, and having rotation limiting portions protruded from one surface of the second member;
a support shaft disposed to pass through the first through hole and the second through hole; and
a third member formed in a plate-like shape and fixed to the support shaft,
wherein a rotation of the first member is limited by the rotation limiting portions and a rotation of the second member is limited by the second through hole.

2. The head mounted display of claim 1 , wherein the rear band part comprises:
a rear band extending to have a predetermined length so as to be tightened on the rear of the user's head;
slide rails located to surround an outer surface of the rear band, and configured to move along the outer surface of the rear band when the hinge members slide; and
a rear band cover coupled to the rear band so that an inner surface thereof is located on outer sides of the slide rails.

3. The head mounted display of claim 2 , wherein the rear band cover is provided on the inner surface thereof with a slide rail guide groove extending by a predetermined depth along a direction that the rear band cover extends, and
wherein the slide rails slide with being supported by the slide rail guide groove.

4. The head mounted display of claim 3 , wherein the rear band part is provided with a support bracket inserted into the rear band cover to support the slide rails located in the slide rail guide groove.

5. The head mounted display of claim 2 , wherein the hinge members comprise a first hinge member supporting one end portion of the body and a second hinge member supporting another end portion of the body, and
wherein the slide rails comprise a first slide rail coupled to the first hinge member, and a second slide rail coupled to the second hinge member and extending toward the first slide rail.

6. The head mounted display of claim 5 , wherein the first slide rail is provided with a first gear portion formed downward on one end portion thereof,
wherein the second slide rail is provided with a second gear portion formed upward on one end portion thereof to face the first gear portion, and
wherein the first gear portion and the second gear portion are brought into contact with a rotation gear to allow relative movement of the first and second slide rails.

7. The head mounted display of claim 6 , wherein the first gear portion and the second gear portion rotate with being engaged with the rotation gear, in response to the forward and backward sliding of the hinge members, so that the first slide rail and the second slide rail move forward and backward along the slide rail guide groove.

8. The head mounted display of claim 6 , wherein the rear band cover is provided with a rotation gear accommodation protrusion protruding toward the rear band so that the rotation gear is inserted therein.

9. The head mounted display of claim 8 , wherein a rotation limiting member is inserted into the rotation gear accommodation protrusion to limit the rotation of the rotation gear.

10. The head mounted display of claim 1 , wherein the wearable member further comprises:
a base portion coupled to the front band part and having a shape corresponding to the front of the user's head; and
a cushion portion coupled to the base portion and configured to absorb shock.

11. The head mounted display of claim 1 , wherein the front band part comprises front band rails disposed on both ends thereof,
wherein the front band part comprises a front band adjustment portion configured to move the front band rails to be tightened on the user's head, and
wherein the front band adjustment portion implements the movement of the front band rails by applying a predetermined tensile force to the front band rails while supporting the front band rails.

12. The head mounted display of claim 11 , wherein the front band adjustment portion comprises a dial member supporting the respective front band rails, and
wherein the dial member comprises:
a holder formed in a cylindrical shape having an opening at one end thereof, and provided with an insertion hole formed through a central portion thereof so that a guide pin is inserted, and a gear support groove formed along an inner circumferential surface thereof;
a main dial disposed to cover the opening and configured to be rotated by a user in one direction;
a first gear coupled to the guide pin, engaged with the gear support groove, and configured to rotate while an outer surface thereof is brought into contact with the gear support groove when the main dial is rotated; and
a second gear fixed to one end of the guide pin, allowing the movement of the front band rails in response to the rotation of the first gear, and configured to apply the predetermined tensile force to the front band rails.

13. The head mounted display of claim 12 , wherein the gear support groove is provided with a thread formed in one direction to allow the rotation of the first gear only in the one direction.

14. The head mounted display of claim 13 , wherein the front band rails, when the main dial is rotated by a preset angle, move to right and left by a distance corresponding to the rotation.

15. The head mounted display of claim 12 , wherein the first gear is separated from the gear support groove when the main dial is pushed, so that the tensile force applied to the front band rails by the second gear is removed.

16. The head mounted display of claim 1 ,
wherein a sliding distance of a support portion of the first member is limited by the rotation limiting portions, and
wherein an angle at which the first member is rotatable centering on the support shaft is limited in an upward or downward direction.

Assignees

• Lg Electronics Inc

Inventors

• Yoon Sumin
• Jung Bupsung
• Hur Hoon

Classifications

• G02B2027/0138

  comprising image capture systems, e.g. camera · CPC title

• G02B2027/0154

  with movable elements · CPC title

• G02B27/0176 Primary

  characterised by mechanical features · CPC title

• G02B27/0093 Primary

  with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title