JPH0341020Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a hood lock device for an automobile.

[Prior art]

Conventionally, there are two types of automobile hoods: a rear-hinged, front-opening type and a front-hinge, rear-opening type, and the hoods are locked and unlocked using hood locking devices.

In the case of a rear hinge front opening type hood lock device, a sub-auxiliary lock mechanism is provided outside the main lock mechanism because it is dangerous if the main lock mechanism becomes unlocked while the vehicle is running.

This sub-lock mechanism is, for example,
Publication No. 168772 and Sankaido Automotive Engineering Complete Book, No. 13
As described in Vol., ``Passenger Car Body'', page 147, the structure includes a secondary latch that engages with the secondary striker of the hood when the main lock mechanism is unlocked, and an operating lever that manually releases the engagement of the latch. ing.

``Problem that the invention seeks to solve'' This secondary latch engages with the secondary striker only after the hood is rotated (lifted) to a position where the operating lever can be reached, so it engages with the striker when the hood is fully closed. The hook portion of the secondary latch protrudes above the secondary striker.

For this reason, a space is required inside the hood that does not interfere with the hood, but in the case of slant nose car models with low ground clearance, there was a problem in which it was not possible to secure space for the secondary latch inside the hood. .

Therefore, in the case of straight-nose vehicle models, the front hinge is required to open at the rear, which poses problems such as restrictions on the hood opening/closing mechanism.
Further, the latch biasing means is large in size and requires a strong lifting force in order to engage with the latch striker and operate to the standby position, and to raise the hood by a predetermined amount, that is, to a position where the secondary latch engages with the secondary striker. In addition, when the hood was lifted, it was unstable because it was supported at one point by being pushed up by the latch striker.

Therefore, it is an object of this invention to provide a hood lock device for an automobile, which can reduce the size of the latch biasing means, can also accommodate strato-nose hoods, and can provide stable hood lift operation. I'm watching it.

[Means for solving the problem] In order to achieve the above object, this invention is provided with a latch striker that is provided on either the hood or the vehicle body side and is detachable from the latch striker that is provided on the other side. A hood lock device comprising a latch that engages, a latch biasing means that biases the latch to an engaged standby position when the engagement is released, and a secondary latch that has a hook portion that can engage with a secondary striker provided on one of the other sides. , the secondary latch is rotatably supported in vertical movement and in an upright position and a tilted position, and is biased upward by a secondary biasing means; A lift portion is formed at a lower position and capable of coming into contact with the secondary striker.

[Function] The secondary latch of such a hood lock device is projected upward by the secondary biasing means when the hood is fully opened. When the hood is closed in this state, the latch striker will engage with the latch. On the other hand, the hook portion of the secondary latch assumes an inclined position due to contact with the secondary striker, and then returns to an upright position by the secondary biasing means, and is brought into a state in which it faces above the secondary striker and can be engaged. Then, the secondary striker hits the lift portion and pushes the latch body down to the lowest position against the secondary biasing means.

Next, when the latch is released, the latch striker that engages with the latch and the secondary striker that is in contact with the latch body of the secondary latch are lifted upward by the latch biasing means and the secondary biasing means, and the latch enters the engaged standby position. ,
The secondary striker comes to engage with the hook of the secondary latch. Therefore, by manually disengaging the secondary latch,
The hood can be opened.

[Embodiment] Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings of FIGS. 1 to 3.

In the figure, 1 indicates a hood lock, and 3 indicates a latch striker. The striker 3 is provided on the hood (not shown), and the hood lock 1 is provided on the vehicle body (not shown).
The base plate 5 of the hood lock 1 has a latch 7 that removably engages with the striker 3 when the hood is closed, a restraining position (Fig. 3) that restrains the latch 7 when the latch 7 is engaged, and a locking position (FIG. 3) that rotates clockwise from that position. A locking plate 9 that can be rotated to a restraint release position where the locking plate 9 moves to release the restraint, and a secondary latch 13 that can engage with a secondary striker 11 formed on the hood are respectively attached, and the base plate 5 is attached to the vehicle body side. It is fixed.

The latch 7 is always urged to the engaged standby position (solid line in FIG. 1) by a latch urging means 15 consisting of a coil spring or the like.

The locking plate 9 is constantly urged to the restraining position (the state shown in FIG. 3) by the plate spring 17. The locking plate 9 in the restraining position (FIG. 3) has a protrusion 9 formed on the main body of the plate.
The latch 7 engages with the latch striker 3 by removably engaging with the engaging portion 7a of the latch 7.
begins to be restricted. In addition, the locking plate 9 has a locking position (see Fig. 3) on the main body of the plate.
A wire cable 19 for rotating the locking plate 9 to the restraint release position is connected, and an operating portion (not shown) of the cable 19 is arranged around the driver's seat.

On the other hand, the secondary latch 13 includes a latch main body 21 pivotally supported by a pivot shaft 27, a hook portion 23 that protrudes upward from the latch main body 21 and can engage with the secondary striker 11, and a hook portion 23 that extends laterally from the main body 21. The hook portion 23 has a tapered surface 2.
3a is formed. The tapered surface 23a has a caper angle that rotates the secondary striker 11 from an upright position (solid line in Figure 1) in which it can engage with the secondary striker 11 to a retreated inclined position (solid line in Figure 2) when the secondary striker 11 comes into contact with it. There is. The latch main body 21 in the upright position is held by a stopper 29 protruding from the base plate 5.

In addition, the latch body 21 of the secondary latch 13
An elongated hole 31 is formed in the elongated hole 31, and the secondary latch 13 can move up and down within the range of the elongated hole 31, and is normally urged upward by a secondary urging means 33.

The secondary biasing means 33 is a coiled spring, with one spring terminal connected to the latch body 2.
At the base of one spring, the other spring terminal extends diagonally upward and engages with the engagement pin 35 of the base plate 5, respectively. As a result, the secondary biasing means 3
In addition to the urging function of urging the secondary latch 13 upward, the latch 3 has an urging function of returning it to the upright position (solid line in FIG. 1). In addition, the latch body 2
1, the secondary latch 13 is located below the hook portion 23, and when the secondary latch 13 is in the upright position, the hook portion 23 is
A lift portion 37 is formed that comes into contact with the secondary striker 11 when the secondary latch 13 is in the inclined position in which the latch 13 is retracted.

In the hood lock device configured in this manner, when the hood is fully opened, the hook portion 23
protrudes upward, and the latch 7 is in the engaged standby position. When the hood is closed in this state, the latch striker 3 engages with the latch 7, and at the same time, the engaging portion 7a engages with the projection 9a of the locking plate 9, so that the latch 7 becomes in a restrained state. On the other hand, the secondary latch 13 is connected to the tapered surface 23 of the hook portion 23.
The hook portion 23 is rotated to an inclined position (solid line in FIG. 2) by the secondary striker 11 in contact with a.
After moving backward, it returns to an upright position and lifts the hook part 2.
3 faces above the secondary striker 11. When the hood is further closed, the striker 11 comes into contact with the lift portion 37, and the secondary latch 13 is pushed down to the lowest position (solid line in FIG. 3). As a result, the amount of protrusion of the secondary latch 13 when the hood is closed is minimized.

Next, when the protruding portion 9a of the locking plate 9 is disengaged from the engaging portion 7a, the latch 7 is engaged by the latch biasing means 15 to the standby position (second position).
(Fig.) to lift (raise) the latch striker 3. At the same time, the secondary latch 13 is raised by the secondary biasing means 33, and the secondary striker 11 in contact with the latch body 21 is pushed upward and comes into engagement with the hook portion 23. In this case, the hood is stably raised by the lifting force provided by the two-point support of the latch striker 33 and the secondary striker 11.

Thereafter, operate the operation lever 25 to release the hook part 23.
The hood can be opened by releasing the engagement.

[Effect of idea]

As explained above, the food lock device of this invention provides the following effects.

(a) The secondary latch is movable up and down, so it does not get in the way when the hood is fully opened, so it can be used with slant-nosed vehicles.

(b) Since the hood is supported at two points by the latch striker and the secondary striker, stable lifting force can be obtained.

(c) Since the secondary biasing means is added to the lifting force of the hood, it is possible to downsize the latch biasing means. Moreover, you will be able to obtain a reasonable lifting force.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the hood lock device of this invention in a released state, and FIGS. 2 and 3 are explanatory views of the same operation. Explanation of main drawing symbols, 3... Latch striker, 5... Base plate, 7... Latch, 11
...Secondary striker, 13...Secondary latch, 15...Latch biasing means, 21...Latch body, 23...Hook part, 33...Secondary biasing means, 37...Lift part.

Claims (1)

[Scope of utility model registration request] a latch provided on either the hood or the vehicle body and removably engaged with a latch striker provided on the other; a latch biasing means for engaging and biasing the latch to a standby position when the engagement is released; A hood lock device comprising a secondary latch having a hook portion that can engage with a secondary striker provided on the other side of the hood lock device, wherein the secondary latch is rotatably supported in vertical movement, an upright posture, and a tilted posture; An automobile characterized in that the latch body of the secondary latch is biased upwardly by a secondary biasing means, and a lift part is formed on the latch body of the secondary latch and is located below the hook part and can come into contact with the secondary striker. food lock device.