JPS5819234Y2 - Automobile hood locking device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a locking device for a hood such as an automobile bonnet or trunk lid.

In a locking device for an automobile hood, which has a striker on either the vehicle body or a hood that can be opened and closed on the vehicle body, and a latch that has a hook on the striker on the other side, the hood locks when the lock is released. A locking device is known in which the opening is pushed up a predetermined amount to make it easier to fully open the hood.

An example of a conventional locking device is explained with reference to FIGS. 1 and 2. 1 is a striker fixed to the hood, 2 is a locking device main body fixed to the vehicle body, and a bracket 3 of the locking device main body 2 is attached to an outer panel. A portion 3a and an inner plate portion 3b are integrally formed, and guide grooves 4a and 4b each having an upside-down shape and opening at the top are cut into the upper portions of the outer plate portion 3a and the inner plate portion 3b. ing.

A latch 6 having a hook portion 6a at its upper portion is pivotally attached to a latch shaft 5 protruding from the inner surface of the central portion of the outer plate portion 3a, and this latch 6 is connected to a lower portion of the latch shaft 5 and a bracket 3. The upper part of the latch 6 is urged to rotate toward the guide grooves 4 a and 4 b by a tension coil type return spring 7 extending between the latch 6 and the side plate portion 3C.

An inclined surface 6b is formed at the upper part of the latch 6, and a wire 8 for unlocking that is operated from inside the vehicle is attached to a bent portion 6C at the lower end of the latch 6.

On the other hand, an L-shaped lift lever 10 having a curved surface 10a for pushing up the striker 1 on the upper outer periphery is swingable on a lever shaft 9 protruding from the left side of the inner surface of the inner plate part 3b. The lift lever 10 is moved in the direction of the arrow P by a tension coil type lift spring 11 which is pivotally attached to the lower end of the lift lever 10 and extends between the bent protrusion 10b at the lower end of the lift lever 10 and the side plate 3C of the bracket 3. It is biased to rotate.

The lock device main body 2 is fixed to the vehicle body via the flange portion 3d of the bracket 3 with bolts or the like.

In the conventional locking device having the above structure, when the striker 1 is pushed down from the state shown in FIG. 1, the striker 1 slides against the inclined surface 6b of the latch 6 and pushes the latch 6 away in the direction of the arrow Q, leading to the guide grooves 4a and 4b. At the same time, the lift lever 10 is pushed down in the opposite direction of the arrow P against the elastic force of the lift spring 11.

When the striker 1 almost reaches the bottom of the guide grooves 4 a and 4 b, the latch 6 returns to its original position by the elastic force of the return spring 7, and the striker 1 is locked by the hook portion 6 a of the latch 6. .

Next, when releasing the above lock, wire 8 from inside the car.
When the latch 6 is pulled in the R direction, the return spring 7
The lift lever 10 swings in the direction of the arrow Q against the elastic force of the lift spring 11 to release the striker 1 from the hook portion 6a, and at the same time the lift lever 10 swings in the direction of the arrow P due to the elastic force of the lift spring 11. The striker 1 is pushed up to the position shown in FIG. 1 by the curved surface 10a of 10 (see Japanese Utility Model Application No. 5299211).

However, the conventional locking device for an automobile hood has a drawback that the locking device main body 2 has a large number of parts and has two rotating parts, making the structure complicated and the manufacturing cost high.

This invention provides a locking device for an automobile hood, which has a small number of parts in the locking device main body, a simple structure, low manufacturing cost, and which maintains the same functions as conventional locking devices.

An embodiment of this invention will be described below with reference to the drawings from FIG. 3 onwards.

Note that parts corresponding to FIGS. 1 and 2 are given the same names and numerals, and their explanations are omitted.

The locking device main body 2 has a bracket 3 having a single layer structure with only an outer plate portion 3a and a guide groove 4a formed therein, and a latch 6 having an operating mechanism similar to that shown in FIG. A spring case 13 containing a compression coil spring 12 is attached to the upper part of the outer surface by welding 14 or screws.

The spring case 13 has a semicylindrical outer surface as shown in FIG. 6, and a cutout groove 15 having the same shape as the guide groove 4a of the bracket 3 is cut in the upper part of the semicircular surface 13H. Flanges 13b and 13C are formed at the upper and lower ends of the spring-pull case 13 to protrude inward to hold the compression coil spring 12 vertically.

The locking device of the embodiment with the above structure has the striker 1 in the third position.
When pushed down from the position shown in the figure, the striker 1 pushes the inclined surface 6b of the latch 6 in the direction of the arrow Q and enters the guide groove 4a and the notched groove 15. At the same time, the compression coil spring 12 is compressed, and the striker 1 pushes the inclined surface 6b of the latch 6 in the direction of the arrow Q. 15, the latch 6 returns to its original position by the elastic force of the return spring 7, and is locked by the hook portion 6a of the latch 6.

Next, when the wire 8 is pulled in the R direction and the latch 6 is swung in the arrow Q direction to cause the hook portion 6a to release the striker 1, the elastic force of the compression coil spring 12 acts directly on the striker 1. The striker 1 is pushed up to the position shown in FIG. 3, and the hood is pushed up a predetermined amount.

In the above embodiment, the striker 1 is attached to the hood and the lock device main body 2 is attached to the vehicle body, but it goes without saying that the striker 1 and the lock device main body 2 may be attached in the opposite manner.

Further, in the above embodiment, the wire 8 is used to release the lock.
Although the lock device is shown using a cylinder lock, a cylinder lock attached to the lock device body may be used to release the lock.

As explained above, this invention has a striker attached to either the vehicle body or the hood that can be opened and closed on the vehicle body.
In a locking device for an automobile hood, a bracket is attached to the other side of the bracket, which has a latch pivotally attached to the striker and a latch that can be freely engaged with and detached from the striker. The compression coil spring is compressed by a striker, and the striker is engaged with the hook portion of the latch to lock it. When the lock is released, the compression coil spring directly acts on the striker to push the hood up a predetermined amount. Therefore, the number of parts is smaller than that of known devices, and the structure is simple.

Also, the known device has two rotating parts, which could cause a malfunction, but this device has only one rotating part, which is not only robust, but also allows the striker to be directly connected to the striker using a compression coil spring. Since the hood is pushed up, the action of pushing up the hood is smooth.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional locking device, Figure 2 is a plan view of the main body of the locking device in Figure 1, Figure 3 is a front view of an embodiment of this invention, and Figure 4 is the locking device in Figure 3. FIG. 5 is a plan view of the main body, FIG. 5 is a sectional view taken along the line ■-V in FIG. 3, and FIG. 6 is a perspective view of the spring case. 1st striker, 3: racket, 6: latch, 6a
: hook part, 12: compression coil spring, 13 spring case, 13a: semicircular surface, 15: notch groove.

Claims (2)

[Scope of utility model registration request] (1) In a locking device for an automobile hood, in which a striker is fixed to either the vehicle body or a hood provided on the vehicle body so as to be openable and closable, and a bracket having a latch having a hook that can be freely engaged and detached from the striker is fixed to the other side. A spring case containing a compression coil spring is fixed to the bracket in correspondence with the hook part of the latch, and while compressing the compression coil spring with a striker, the striker is engaged with the hook part of the latch to lock it. A locking device for an automobile hood, characterized in that when the compression coil spring is released, the compression coil spring directly acts on the striker to push the hood up a predetermined amount. (2) The spring case has a notch groove opened at the top in an inverted shape for guiding the striker on the upper part of the semicircular surface of the spring case. Automotive hood locking device.