Locking device

1. A locking device comprising:

a base;

a hook, which is provided on the base, is formed with a groove into which a striker is capable of entering, and is capable of rotating from an unlocked position, in which the striker is capable of entering the groove, to a locked position, in which the striker is prohibited from being removed from the groove;

a pawl, which is rotatably provided on the base, is configured to prohibit a rotation of the hook out of the locked position by being engaged with the hook when the hook is in the locked position, and is urged in a direction to be engaged with the hook;

a striker-contact member, which is provided on the hook, wherein, when the striker has entered the groove of the hook, the striker-contact member is abutted against one side of the striker and the groove of the hook is abutted against another side of the striker;

an urging member, which urges the hook towards the unlocked position via the striker-contact member and urges the striker-contact member in a liner direction to be abutted against the one side of the striker when the striker has entered the groove; and

a pawl urging member, one end of which is attached to the pawl and another end of which is attached to the base, wherein the pawl urging member urges the pawl in the direction to be engaged with the hook,

wherein one end of the urging member is attached to the striker-contact member, and another end of the urging member is attached to the base,

wherein the striker-contact member is rotatable and is linearly movable in the linear direction with respect to the hook, and

wherein the linear direction, in which the striker-contact member is movable, is a direction intersecting an entering direction, in which the striker moves as it enters into a groove of the base and enters into the groove of the hook.

2. The locking device according to claim 1 , further comprising

a stopper mechanism, which restricts a movement of the striker-contact member in the direction to be abutted against the one side of the striker when the hook is located between the unlocked position and a position other than the locked position.

3. The locking device according to claim 2 , wherein the stopper mechanism is configured by:

a first stopper protrusion provided on the base; and

a second stopper protrusion provided on the striker-contact member.

4. The locking device according to claim 2 , wherein the stopper mechanism includes:

a stopper protrusion provided on one of the base and the striker-contact member; and

a stopper surface provided on the other of the base and the striker-contact member,

wherein the stopper protrusion abuts against the stopper surface when the hook is located between the unlocked position and the position other than the locked position.

5. The locking device according to claim 4 , wherein the stopper surface includes an arcuate surface portion and a planar surface portion provided continuously to the arcuate surface portion.

6. The locking device according to claim 5 , wherein the arcuate surface portion is centered on a rotation center axis of the hook, and

wherein the planar surface portion holds the striker-contact member at a position when the hook is in the unlocked position.

7. The locking device according to claim 1 , wherein the hook is provided with a concave portion that includes a first stopper surface parallel to a rotation axis of the hook and intersecting with a rotation direction of the hook, and a second stopper surface facing the first stopper surface via a space,

wherein the pawl is provided with a convex portion that includes a first contact portion capable of abutting against the first stopper surface and a second contact portion capable of abutting against the second stopper surface, and

wherein an engagement between the hook and the pawl is made by the concave portion and the convex portion.

8. The locking device according to claim 1 , wherein the striker-contact member is positioned between the base and the hook.

9. The locking device according to claim 1 , wherein the urging member is positioned between the striker-contact member and the base.

10. The locking device according to claim 1 , wherein, when the hook and the pawl are engaged with each other when the hook is in the locked position, rotations in a clockwise direction and a counterclockwise direction of the hook are prohibited.

11. The locking device according to claim 1 , wherein a protrusion is formed on the hook,

wherein a guide mechanism guides the striker-contact member to move along the linear direction and the guide mechanism comprises the protrusion of the hook, a first guide portion, which corresponds to the protrusion, of the striker-contact member, and an axis member, which is provided on the base as a rotation axis of the book.

12. The locking device according to claim 11 , wherein the guide mechanism further comprises a second guide portion, which is provided on the striker-contact member and corresponds to the axis member.