Self-locking mechanism and electronic device with the same

Patent metadata

Field	Value
Publication number	US-11086351-B2
Application number	US-201816326112-A
Country	US
Kind code	B2
Filing date	Apr 13, 2018
Priority date	Apr 18, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A self-locking mechanism includes: a housing having a through hole and a dodge hole; an elastic member in the dodge hole, the elastic member being connected to a wall of the dodge hole and having a free end capable of swinging in a thickness direction of the housing; a first engaging member on the elastic member; a knob on an outer side of the housing and having one end passing through the through hole; a plurality of second engaging members on a side of the knob adjacent to the housing; wherein the first engaging member may be engaged with or disengaged from one of the second engaging members under an action of an elastic deformation of the elastic member as the knob rotates; and a driven member on an inner side of the housing and fixedly connected with the knob so as to be rotated under driving of the knob.

First claim

What is claimed is:

1. A self-locking mechanism comprising:
a housing having a through hole and a dodge hole;
an elastic member in the dodge hole, the elastic member being connected to a wall of the dodge hole and having a free end capable of swinging in a thickness direction of the housing;
a first engaging member on the elastic member;
a knob on an outer side of the housing and having one end passing through the through hole;
a plurality of second engaging members on a side of the knob adjacent to the housing; wherein the first engaging member may be engaged with or disengaged from one of the second engaging members under an action of an elastic deformation of the elastic member as the knob rotates; and
a driven member on an inner side of the housing and fixedly connected with the knob so as to be rotated under driving of the knob,
wherein the driven member is a gear; and a number of teeth of the gear is an integer multiple of a number of the second engaging members.

2. The self-locking mechanism according to claim 1 , wherein,
the plurality of second engaging members are equidistant from a center of rotation of the knob.

3. The self-locking mechanism according to claim 1 , wherein,
the number of teeth of the gear is equal to the number of the second engaging members.

4. The self-locking mechanism according to claim 1 , wherein,
the self-locking mechanism further comprises a rack; and the gear is meshed with the rack such that the gear may drive the rack to move when rotating.

5. The self-locking mechanism according to claim 1 , wherein,
the knob and the gear are fixedly connected with each other via a screw.

6. The self-locking mechanism according to claim 1 , wherein,
the first engaging member is a protrusion and each of the second engaging members is a groove.

7. The self-locking mechanism according to claim 6 , wherein,
the first engaging member is a hemispherical protrusion and each of the second engaging members is a hemispherical groove.

8. The self-locking mechanism according to claim 1 , wherein,
the elastic member is integrally formed onto the housing.

9. The self-locking mechanism according to claim 1 , wherein,
the elastic member is an elongated elastic piece, a length direction of which is set toward a center of rotation of the knob, and the free end of which extends to an edge of the through hole.

10. The self-locking mechanism according to claim 9 , wherein,
the other end of the elongated elastic piece except for the free end is connected to the wall of the dodge hole.

11. The self-locking mechanism according to claim 9 , wherein,
the self-locking mechanism further comprises a limiting ring disposed at a peripheral edge of the through hole and on a side of the through hole adjacent to the knob; wherein the limiting ring comprises a first section and a second section that are separated from each other; the first section is disposed on the housing, and the second section is disposed on the free end of the elongated elastic piece;
wherein the first engaging member is located on the second section.

12. The self-locking mechanism according to claim 11 , wherein,
the limiting ring is tightly fitted with an end of the knob that passes through the through hole.

13. The self-locking mechanism according to claim 1 , wherein,
the dodge hole and the through hole are in communication with each other.

14. An electronic device comprising the self-locking mechanism according to claim 1 .

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Tian Wenhong
• Ma Zhanshan
• Sun Zhiyu
• Chen Dong
• Zhang Hao
• Chen Lili

Classifications

• G05G5/18 Primary

  by positive interengagement, e.g. by a pawl · CPC title

• G02B27/0176 Primary

  characterised by mechanical features · CPC title

• G02B2027/0154

  with movable elements · CPC title

• G05G1/08

  Controlling members for hand actuation by rotary movement, e.g. hand wheels · CPC title

• F16H2035/005

  Gearings or mechanisms preventing back-driving · CPC title