Guide cam device, and on-board device using the guide cam device

Patent metadata

Field	Value
Publication number	US-12459444-B2
Application number	US-202418609701-A
Country	US
Kind code	B2
Filing date	Mar 19, 2024
Priority date	Apr 5, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A guide cam device includes a cam groove, a projection, and a restriction member. The cam groove includes: first, second, and third grooves, the second and third grooves branching forward from the first groove; and a locking recess positioned between a forward end of the second groove and a forward end of the third groove. The projection is configured to move forward and backward in the cam groove and enter a locked state upon entering the locking recess. The restriction member is configured to inhibit entry of the projection from the first groove to the third groove and permit the projection to advance from the first groove to the second groove. In response to being pushed by the projection that exits the locking recess and moves backward in the third groove, the restriction member is deformed or moved to enable the projection to move to the first groove.

First claim

What is claimed is:

1 . A guide cam device, comprising:
a cam groove; a projection; and a restriction member, wherein the cam groove includes
a first groove, a second groove, and a third groove, the second groove and the third groove branching forward from the first groove, and
a locking recess positioned between a forward end of the second groove and a forward end of the third groove,
the projection is configured to move forward and backward in the cam groove and enter a locked state upon entering the locking recess, the restriction member is configured to inhibit entry of the projection from the first groove to the third groove and permit the projection to advance from the first groove to the second groove, and in response to being pushed by the projection that exits the locking recess and moves backward in the third groove, the restriction member is deformed or moved to enable the projection to move to the first groove, wherein the first groove and the third groove form a single continuous straight line, and the second groove includes an inclined portion that is inclined in a direction away from the third groove as the projection advances.

2 . The guide cam device according to claim 1 , further comprising a torsion spring member that is configured to apply a biasing force to the cam groove or the projection in a direction in which the projection is pushed from the second groove toward the third groove.

3 . The guide cam device according to claim 1 , wherein
the restriction member is an elastically deformable spring member.

4 . The guide cam device according to claim 1 , wherein
no step is formed on a bottom surface of the cam groove.

5 . An on-board device, comprising:
a stationary portion; a movable portion, and the guide cam device of claim 1 between the stationary portion and the movable portion, wherein the movable portion is movable forward and backward along the stationary portion, and in response to the movable portion moving forward, the projection enters the locking recess and the movable portion enters a locked state.

6 . The guide cam device according to claim 1 , wherein the cam further includes an advancing path inclined portion and a receding path inclined portion between the second grove and the third grove, and
the locking recess is formed by merging the advancing path inclined portion and the receding path inclined portion with an angle without a concave portion at the locking recess in a direction perpendicular to moving directions of the projection in the advancing path inclined portion and the receding path inclined portion.

Assignees

• Alps Alpine Co Ltd

Inventors

• Toba Kimio
• Taniguchi Jun

Classifications

• F16H53/00

  Cams or cam-followers, e.g. rollers for gearing mechanisms · CPC title

• B60R2011/005

  Connection with the vehicle part · CPC title

• B60R2011/0005

  Dashboard · CPC title

• G06K13/0825

  the ejection arrangement being of the push-push kind · CPC title

• F16M11/425

  along guiding means · CPC title