Title:
EMBEDDED TELESCOPIC APPARATUS AND HEAD-MOUNTED DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/218720
Kind Code:
A1
Abstract:
Disclosed in the present utility model is an embedded telescopic apparatus, comprising a housing, a sliding member and a telescopic gear shift mechanism. A cavity is formed in the housing and the cavity is provided with an insertion port. The sliding member is provided with a telescopic end and an insertion end, wherein the insertion end is inserted into the cavity through the insertion port and slidably limited in the cavity, and the telescopic end can extend out of the insertion port in a telescopic manner. The telescopic gear shift mechanism comprises a strip-shaped gear shift recess and a limiting protrusion, wherein the gear shift recess is arranged on the side wall of the cavity and the limiting protrusion is arranged on the side surface of the sliding member. The limiting protrusion is embedded in the gear shift recess and slidably limited between two ends of the gear shift recess; the gear shift recess is provided with at least two gear parts and at least one elastic limiting part, wherein the gear parts and the elastic limiting part are alternately arranged and in mutual communication, the elastic limiting part limits the limiting protrusion in the gear parts, and when the sliding member slides, the limiting protrusion slides from one gear part to another gear part. The gear shift mechanism has the advantages of a simple structure, a small size, firmness and durability.
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Inventors:
ZHU DAYUN (CN)
Application Number:
PCT/CN2021/088550
Publication Date:
November 04, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
ZHU DAYUN (CN)
International Classes:
H04R1/10; H04R25/00
Foreign References:
| CN211656354U | 2020-10-09 | |||
| CN211860502U | 2020-11-03 | |||
| CN206364995U | 2017-07-28 | |||
| CN207783072U | 2018-08-28 | |||
| CN207706388U | 2018-08-07 | |||
| CN106444035A | 2017-02-22 | |||
| CN108095494A | 2018-06-01 |
Attorney, Agent or Firm:
DONGGUAN KEKAIWEICHENG INTELLECTUAL PROPERTY CO. LTD. (CN)
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