JP2798412B2 - Bonnet lock device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hood lock device for an automobile.

(Prior Art) A conventional bonnet lock device includes a fork which is attached to a vehicle body and meshes with a striker provided on the bonnet side, and a claw lever which engages with the fork and maintains a meshing state between the fork and the striker. It has.
The claw lever of this bonnet lock device is connected to a lock release lever provided in the driver's seat by a wire. Then, when the lock release lever is operated from the driver's seat side to rotate the claw lever, the engagement between the fork and the striker is released, and the fork pushes up the hood hood via the striker.

In the case of a structure in which the front end of the hood opens, the striker locks the hood so that the hood does not open and obstruct the view when the fork and striker are unintentionally disengaged during running. A safety hook is provided to prevent disengagement from the device. In this device, after the lock is released by operating the lock release lever from the driver's seat side, the hood is lifted while operating the safety hook.

(Problems to be Solved by the Invention) However, in the conventional hood lock device, the lift amount of the hood hood when the lock release lever is operated is small. Was difficult to lift.

In particular, in the case of having the safety hook, the finger is inserted through the gap between the tip of the hood and the vehicle body to operate the safety hook. However, there is a problem that it is difficult to operate the safety hook because the gap is small.

Therefore, in order to increase the lift amount of the hood, the stroke of the fork is increased,
It is conceivable to separately provide a lift-up device using a spring or the like.However, the former requires a larger hood lock device, and the latter requires extra mounting space for the lift-up device, and has the disadvantage that mounting is complicated. is there.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a compact bonnet lock device having a large lift amount of a hood.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a fork that engages with a striker provided on a bonnet side, and engages with the fork to maintain an engagement state between the fork and the striker. A lift lever having a rotation stroke greater than a rotation stroke of a fork is rotatably provided on a base, and one end of a tension coil spring is connected to the claw lever and the other end is connected to the lift lever. And urges the claw lever in a direction in which the claw lever engages with the fork, and urges the lift lever in a direction to push up the striker.

(Operation) In a state where the fork and the striker are engaged and the hood hood is closed, when the claw lever is rotated by the unlocking operation, the engagement between the fork and the striker is released, and the fork is rotated by the urging force and the striker is rotated. And push up the hood. At this time, the coil spring is extended by an amount corresponding to the rotation of the claw lever, and the force of pressing the striker of the lift lever is increased. Then, the lift lever rotates beyond the rotation stroke of the fork, and further presses the striker to push up the hood.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a bonnet lock device according to the present invention,
A substantially box-shaped base 1 fixed to a vehicle body (not shown) has, at its upper end, a slit 3 into which a striker 2 fixed to the tip of a hood (not shown) is fitted. A fork 4, a claw lever 5, a safety hook 6, and a lift lever 7 are attached to the base 1.

The fork 4 is rotatably attached to a support shaft 8 provided on the base 1. As shown in FIG. 3, the fork 4 is engaged with the striker 2 and
A U-shaped notch 9 intersecting the slit 3, a concave portion 10 in which a claw portion 16 of a claw lever 5 described later is locked, and a coil spring receiving portion cut out in an arc shape for receiving a coil spring 11
12 are formed. At the end of the coil spring housing 12,
A coil spring holding portion 13 that holds one end of the coil spring 11 is formed.

The claw lever 5 is rotatably attached to a support shaft 14 provided on the base 1. And this claw lever 5
A wire 15 is connected between the front end of the driver and a lock release lever on the driver's seat side (not shown). A claw 16 is formed in the middle of the claw lever 5 to be engaged with the recess 10 of the fork 4.

The safety hook 6 has an operation part 17 at one end and a hook at the other end.
It has a substantially rectangular shape having 18 and is rotatably attached to a support shaft 19 provided on the base 1 in the middle thereof. The safety hook 6 is urged clockwise in FIG. 1 to stop against the stopper (not shown) so that the hook 18 closes the entrance of the slit 3 of the base 1.

The lift lever 7 is rotatably mounted coaxially with the support shaft 8 of the fork 4 independently of the fork 4.

As shown in FIG. 3, the lift lever 7 has a projecting piece 20 and a first folded piece 21 formed by bending the tip of the projecting piece 20.
And a second spring piece 22 formed by bending the side end of the protruding piece 20, a coil spring holding portion 23 is formed. The coil spring holding section 23 is adapted to fit into the coil spring accommodating section 12 of the fork 4 to hold the other end of the coil spring 11.

The lift lever 7 and the claw lever 5 are connected by a coil spring 24, and the lift lever 7 is urged counterclockwise in FIG. 1 and the claw lever 5 is urged clockwise. Note that a torsion spring may be used instead of the coil spring 24.

The lift lever 7 can press the striker 2 crossing the slit 3 of the base 1. The rotation stroke of the lift lever 7 from the locked state shown in FIG. 1 until the striker 2 is pushed up completely is larger than the rotation stroke of the fork 4 until the fork 4 pushes the striker 2 up. Thus, the lever length of the lift lever 7 is determined.

In the hood lock device having the above configuration,
When the hood is closed, as shown in FIG.
16 is locked, so that the notch 9 is
And is held at a position crossing the slit 3. The lift lever 7 is urged counterclockwise in FIG. 1 by the coil spring 24 to press the striker 2 from below.

From this locked state, by operating the unlock lever of the driver's seat (not shown) and pulling the wire 15 rightward in FIG.
The claw lever 5 rotates counterclockwise about the support shaft 14 against the urging force of the coil spring 24.

As a result, the claw portion 16 of the claw lever 5 is disengaged from the concave portion 10 of the fork 4, and the lift lever 7 rotates counterclockwise around the support shaft 8 by the urging force of the coil spring 24, and moves the striker 2 upward. Press to push up a hood (not shown). At this time, since the coil spring 24 is extended by an amount corresponding to the pulling of the claw lever 5, the force of the lift lever 7 pressing the striker 2 is increased, and the force of pushing up the hood hood is increased. Then, the striker 2 moves upward by being pressed by the lift lever 7 and presses the edge of the notch 9 of the fork 4. Therefore, as the striker 2 moves in the direction in which the striker 2 separates from the slit 3, the fork 4 maintains its positional relationship with the lift lever 7 as shown in FIG. Rotate clockwise. At this time, the coil spring 11 moves with the fork 4 and the lift lever 7 almost without expanding and contracting.

Then, when the fork 4 rotates by the rotation stroke thereof and the engagement between the cutout 9 of the fork 4 and the striker 2 is released, the lift lever 7 further rotates beyond the rotation stroke of the fork 4. As shown in FIG. 2, the striker 2 is further pressed by the lift lever 7 and moves upward. As a result, the hood is further pushed up. At this time, the coil spring 11 is moved by an amount of rotation of the lift lever 7 relative to the fork 4.
Is compressed. As a result, the fork 4 is urged counterclockwise in FIG. 2 to keep the slit 3 open.

The lift amount of the bonnet hood is increased by the lift lever 7 to increase the gap between the hood and the vehicle body. Therefore, the operating portion 17 of the safety hook 6 is easily accessible, and the lifting operation is facilitated.

When the operator inserts his hand through the gap between the lifted hood and the vehicle body and raises the operating portion 17 of the safety hook 6 upward in FIG. 2, the safety hook 6 rotates counterclockwise in FIG. Moves to the left in the figure, and the slit 3 is opened. As a result, the striker 2 can be detached from the slit 3. If the tip of the hood hood integrated with the striker 2 is lifted,
The hood opens. And the operation unit of the safety hook 6
When the hand is released from 17, the safety hook 6 is rotated clockwise in FIG. 2 by the urging force, and the hook 18 returns to the state in which the slit 3 is closed.

When the tip of the hood is pushed up to close the hood, the striker 2 shown by a two-dot chain line in FIG. 2 collides with the inclined tip of the hook 18 of the safety hook 6,
The safety hook 6 is rotated counterclockwise in the figure against the urging force, and is fitted into the opened slit 3. Then, the striker 2 further collides with the lift lever 7 to rotate the lift lever 7 clockwise in FIG. 2 against the urging force of the coil spring 24, and then the mouth of the notch 9 of the fork 4. , And engages with the notch 9 to rotate the fork 4 clockwise together with the lift lever 7.

By the rotation of the fork 4, the claw portion of the claw lever 5 is formed.
When the fork 4 slides on the end face of the fork 4 and engages with the recess 10, the cutout 9 of the fork 4 intersects with the slit 3, as shown in FIG. It is locked in the space enclosed by.

Further, the coil spring 11 for urging the fork 4 may be connected to the base 1. In this case, the amount of expansion and contraction of the coil spring is required for the rotation stroke of the fork 4 and is larger than that of the above-described embodiment.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the lift-up amount of the hood is increased by the lift lever that rotates beyond the rotation stroke of the fork. Operation becomes easy. Further, since the lift lever for increasing the lift-up amount is integrated into the bonnet lock device, it is compact. Furthermore, since the coil spring for urging the craw lever and the lift lever is shared, the number of parts is small, and when the craw lever is pulled, the coil spring extends and the force for pressing the striker of the lift lever increases,
This has the effect of increasing the force pushing up the hood.

[Brief description of the drawings]

1 and 2 are front views showing a locked state and an unlocked state, respectively, of the bonnet lock device according to the present invention, and FIG. 3 is an exploded perspective view of a fork and a lift lever. 1 ... base, 2 ... striker, 4 ... fork, 5 ... claw lever, 7 ... lift lever, 24 ... coil spring.

Claims (1)

(57) [Claims] 1. A bonnet lock device comprising: a fork provided on a bonnet side for engaging with a striker; and a claw lever engaged with the fork to maintain an engaged state between the fork and the striker. A lift lever having a rotation stroke equal to or greater than a stroke is rotatably provided on the base, one end of a tension coil spring is attached to the claw lever and the other end is attached to the lift lever, and the claw lever is engaged with the fork in a direction in which the claw lever is engaged. A hood lock device, wherein the lift lever is biased in a direction to push up the striker.