# US 2018/0321707 A1 · Head-mounted display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0321707 A1 - Document ID: US20180321707A1 - Status: Published application - Kind: A1 - Application number: 15/813,024 - Filed: 2017-11-14 - Published: 2018-11-08 - Earliest claimed: 2017-05-04 - Assignees: HTC Corporation - Applicants: HTC Corporation - Inventors: Chih-Kai Hu; I-Hsuan Lin - Web page: https://patentgrep.com/patent/US20180321707A1 ## CPC - G06F 1/163: {Wearable computers, e.g. on a belt} - A45F 5/00: Holders or carriers for hand articles; Holders or carriers for use while travelling or camping - G02B 27/0176: {characterised by mechanical features} - G02C 5/22: Hinges (pivotal connection in general F16C11/00) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - A45F: TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract A head-mounted display device includes a body, two extension members and an adjustable fixing member. The body is adapted to lean against a front portion of a head of the user. The two extension members are disposed opposite each other. First ends of the two extension members are respectively coupled to two opposite ends of the body and configured to rotate with respect to the body so as to lean against two side portions of the head. The adjustable fixing member is coupled to each second end of the two extension members to lean against the back portion or top portion of the head, wherein the body is fixed on the head through the two extension members and the adjustable fixing member. Each of the extension members is adapted to contact or to depart from the two side portions of the head by rotating with respect to the body. ## Claims ### Claim 1 A head-mounted display device, comprising: a body, adapted to lean against a front portion of a head of a user; two extension members, disposed opposite each other, wherein first ends of the two extension members are respectively coupled to two opposite ends of the body and configured to rotate with respect to the body and to lean against two side portions of the head of the user; and an adjustable fixing member, coupled to each second end of the two extension members and leaning against a back portion or a top portion of the head of the user, wherein the body is fixed on the head of the user through the two extension members and the adjustable fixing member, and each of the two extension members is adapted to contact with or depart from the two side portions of the head of the user by rotating with respect to the body. ### Claim 2 (depends on 1) The head-mounted display device as recited in claim 1, wherein the two extension members are curved and extended from two opposite ends of the body to above ears of the user. ### Claim 3 (depends on 2) The head-mounted display device as recited in claim 2, wherein the two extension members are curved structures, and an inner arc portion of each of the curved structures facing the top portion of the head of the user. ### Claim 4 (depends on 1) The head-mounted display device as recited in claim 1, further comprising: two pivot members, respectively connecting the two opposite ends of the body with the first ends of the two extension members, wherein the two extension members are configured to rotate with respect to the body through the two corresponding pivot members so as to contact with or depart from the two side portions of the head of the user. ### Claim 5 (depends on 1) The head-mounted display device as recited in claim 1, wherein the first ends of the two extension members are respectively coupled to the two opposite ends of the body by screwing. ### Claim 6 (depends on 1) The head-mounted display device as recited in claim 1, wherein the adjustable fixing member comprises: a top side adjustable fixing member, adapted to contact the top portion of the head of the user, and two opposite ends of the top side adjustable fixing member are respectively coupled to the second ends of the two extension members; and a back side adjustable fixing member, adapted to contact the back portion of the head of the user, and two opposite ends of the back side adjustable fixing member are respectively coupled to the second ends of the two extension members, and the body is fixed on the head of the user by adjusting the top side adjustable fixing member and the back side adjustable fixing member. ### Claim 7 (depends on 6) The head-mounted display device as recited in claim 6, wherein the top side adjustable fixing member comprises a bearing belt and two buckles, the buckles respectively connect two opposite ends of the bearing belt with the corresponding extension members, and the bearing belt has an elastic portion. ### Claim 8 (depends on 6) The head-mounted display device as recited in claim 6, wherein the top side adjustable fixing member comprises a bearing belt and two elastic connecting belts, the elastic connecting belts respectively connect two opposite ends of the bearing belt with the second ends of the corresponding extension members. ### Claim 9 (depends on 6) The head-mounted display device as recited in claim 6, wherein the back side adjustable fixing member comprises an adjusting mechanism and two adjusting belts, the adjusting belts respectively connect the adjusting mechanism with the second ends of the corresponding extension members. ### Claim 10 (depends on 9) The head-mounted display device as recited in claim 9, wherein the adjusting mechanism has a gear, each of the adjusting belts has a gear rack coupled to the gear, and the adjusting mechanism is configured to rotate and drive the two adjusting belts to move with each other. ### Claim 11 (depends on 9) The head-mounted display device as recited in claim 9, wherein the adjusting belts are respectively pivotally connected to the second ends of the corresponding extension members, and the back side adjustable fixing member is adapted to rotate with respect to the two extension members.