Lock device

Patent metadata

Field	Value
Publication number	US-9969308-B2
Application number	US-201314651639-A
Country	US
Kind code	B2
Filing date	Dec 11, 2013
Priority date	Dec 12, 2012
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A lock device includes a base, a first rotation member, a second rotation member, a first elastic member, and a second elastic member. Protrusions are provided on one of the base and one of the first rotation member and the second rotation member. The protrusions are protruded in a direction parallel to the rotation axis of the first rotation member. An end of one of the first elastic member and the second elastic member is fixed to the protrusions. The protruding length in the rotation axis direction of the protrusions is longer than the length in the rotation axis direction of one of the first elastic member and the second elastic member.

First claim

What is claimed is:

1. A lock device comprising:
a plate-shaped base having a front surface and a back surface;
a first rotation member and a second rotation member, which are each provided on the front surface of the base and are each rotated around a rotation axis parallel to each other, wherein at least a portion of the first rotation member and the second rotation member contacts each other, so that relative rotation in at least one direction of the first rotation member and the second rotation member is able to be locked;
a striker, which is able to be moved into engagement with a striker receiving portion provided on the first rotation member;
a first elastic member, which is provided in a space between the base and the first rotation member;
a second elastic member, which is provided in a space between the base and the second rotation member,
wherein, when the relative rotation in at least one direction of the first rotation member and the second rotation member is locked, the lock device is in a locked state in which the striker is prevented from being disengaged from the striker receiving portion,
wherein, when the locking of the relative rotation in at least one direction of the first rotation member and the second rotation member is released, the lock device is in an unlocked state which is the striker is allowed to be disengaged from the striker receiving portion,
wherein the first elastic member applies a force to the first rotation member to rotate the first rotation member in one direction around its rotation axis,
wherein the second elastic member applies a force to the second rotation member to rotate the second rotation member in one direction around its rotation axis,
wherein a protrusion is provided on the base, the protrusion protruding in a direction parallel to one of the rotation axes of the first rotation member and the second rotation member and an end of one of the first elastic member being fixed to the protrusion, wherein an apex of the protrusion comes into contact with the first rotation member, and
wherein a protruding height of the protrusion in the direction parallel to one of the rotation axes of the first rotation member and the second rotation member is greater than a width of the first elastic member in the direction parallel to one of the rotation axes of the first rotation member and the second rotation member.

2. The lock device according to claim 1 ,
wherein an auxiliary protrusion is provided on one of the base and one of the first rotation member and the second rotation member, the auxiliary protrusion extending between the base and one of the first rotation member and the second rotation member, and
wherein the auxiliary protrusion protrudes to extend in the same direction as the protruding height of the protrusion.

3. The lock device according to claim 2 , wherein the auxiliary protrusion is provided on the base, and
wherein the apex of the protrusion and the auxiliary protrusion are in contact, at two points, with the first rotation member.

4. The lock device according to claim 2 ,
wherein at least one of the first elastic member and the second elastic member comprises a flat spiral spring centered on a corresponding one of the rotation axes of the first rotation member and of the second rotation member, and
wherein the auxiliary protrusion is provided at a position of being in contact with an outer peripheral surface of the flat spiral spring of the first elastic member.

5. The lock device according to claim 1 ,
wherein each of the first elastic member and the second elastic member has an outer end, an inner end, and an intermediate portion that is provided between the outer end and the inner end, and
wherein the protruding height of the protrusion is greater than a width of the intermediate portion in the direction parallel to one of the rotation axes of the first rotation member and the second rotation member.

Assignees

• Shiroki Corp

Inventors

• Ban Masahiro
• Sakurai Takayuki
• Suzuki Hiroyuki

Classifications

• B60N2/444 Primary

  Operations & Transport · mapped topic

• B60N2/22

  the back-rest being adjustable {(B60N2/2878 takes precedence)} · CPC title

• B60N2/01583 Primary

  locking on transversal elements on the vehicle floor or rail, e.g. transversal rods · CPC title

• E05B79/08

  Mounting of individual lock elements in the lock, e.g. levers · CPC title

• E05B85/26

  Cooperation between bolts and detents · CPC title