JPH07127319A - Trunk locking device - Google Patents

Abstract

PURPOSE:To reduce weight, and to improve rigidity by forming a locking plate engaged with and disengaged from a key cylinder by a thin metal plate, bending at least a lock main section and a short-sized lever section and forming multiple structure. CONSTITUTION:A locking plate 4, which consists of a long-sized lever section 9 and a short-sized lever section 10 and in which one end is engaged with and disengaged from a key lever for the key cylinder of a trunk, is formed integrally by a thin metal plate. The short-sized lever section 10 is bent, and lock main sections 8 are superposed and rigidity is ensured sufficiently. The weight of the locking plate 4 is reduced, and the locking plate 4 is engaged with a latch 3 once by inertia force using the weight of the long-sized lever section 9 as mass when the trunk is closed suddenly, and is not sprung back in the direction of locking release by repulsion. Accordingly, locking can be conducted positively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile trunk lock device.

[0002]

2. Description of the Related Art An automobile trunk lock device is provided with a lock mechanism on a trunk lid, as shown in "Service Weekly Report No. 622", page D-46, issued by Nissan Motor Co., Ltd., September 1989. On the other hand, a striker is provided at the edge of the trunk opening so that the lock mechanism can be unlocked by operating a key cylinder provided on the trunk lid or an opener provided on the passenger compartment side.

This will be specifically described with reference to FIG.
1 is a lock mechanism, which is a lock base 2 and a lock base 2
Is rotatably supported by a support shaft 6 on the striker 11
A latch 3 that engages and disengages with the lock base 2, a locking plate 4 that is rotatably supported on a lock base 2 by a support shaft 7, and engages and disengages with the latch 3, and a set spring 5.

In the locking plate 4, a long lever portion 9 for engaging / disengaging a key lever of a key cylinder (not shown) is provided at one end of a lock main portion 8 having a lock tooth 4a for engaging / disengaging with the lock tooth 3a of the latch 3. At the same time, a short lever portion 10 for engaging and disengaging the open lever of the opener (not shown) is provided at the other end.

In this example, the short lever portion 10 is attached to the lock main portion 8
However, there is also a case where it is separately molded and arranged coaxially with the support shaft 7.

[0006] The set spring 5 is stretched over the latch 3 and the locking plate 4, and these latch 3
And locking plate 4 and those lock teeth 3
The turning force is urged in the direction in which a and 4a mesh with each other.

[0007]

DISCLOSURE OF THE INVENTION Locking plate 4
Is formed of a thick metal plate material like the latch 3 in order to increase the lock rigidity, and the length from the shaft fulcrum to the end of the long lever portion 9 is relatively large. When the latch 3 and the locking plate 4 are suddenly closed and the lock operation is performed against the spring force of the set spring 5 in the order of a, b, and c in FIG. Due to the inertial force with the weight as a mass, the lock teeth 3a and 4a are repulsed at the moment of meshing and interfering with each other, and tend to bounce back to the state of FIG.

As described above, when the locking lever 4 momentarily bounces back to the above-mentioned state, the spring force of the set spring 5 tries to return to the c-locked state, but the trunk lid is closed. At some times, as shown in FIG. 6, the reaction force of the trunk weather strip 13 provided at the trunk opening edge 12 and the reaction force of the bumper rubber (not shown) exerts a force in the opening direction, so that the locking plate 4 is returned to the state of C. This reaction force causes the latch 3 to be caught by the striker 11 and rotate in the unlocking direction to return to the unlocked state (1), which may cause the trunk lid to be closed improperly.

In order to avoid this, the wire diameter of the set spring 5 is made thicker, or the spring receiver of the latch 3 or the locking plate 4 is extended to the side of the lock base 1 so as to stand up to the outside. It is necessary to increase the spring tension span of the set spring 5 so that the spring 5 does not interfere with the latch 3 and the locking plate 4 and to increase the spring force of the set spring 5.

However, in the former case, the spring becomes large due to an increase in the wire diameter of the spring, which makes it difficult to dispose the set spring in a restricted space between the latch 3 and the locking plate 4, and In both the former case and the latter case, the dimension of the lock mechanism 1 in the thickness direction becomes large. Therefore, particularly in a vehicle type in which the lock mechanism 1 is provided on the trunk lid side, the lock provided at the trunk opening edge as shown in FIG. The opening area of the mechanism entrance 14 has to be increased, and the appearance is deteriorated.

Therefore, the present invention provides a trunk lock device having a simple structure, which can prevent the locking plate from bouncing back when the trunk lid is closed rapidly and can perform a reliable locking operation.

[0012]

[Means for Solving the Problems] A lock mechanism provided on one of a trunk lid and a trunk opening edge and a striker provided on the other side, and the lock mechanism includes a lock base and a lock base. It has a latch that is pivotally supported and disengages from the striker, and a long lever part that disengages the key lever of the key cylinder at one end of the lock main part that forms the lock tooth, and a short lever that disengages the open lever of the opener at the other end. And a locking plate pivotally supported by the lock base, and a set that is stretched between the latch and the locking plate to urge a rotational force in a direction in which the locking tooth of the locking plate and the locking tooth of the latch mesh with each other. In a structure including a spring, if the locking plate is formed of a thin metal plate , There the lock main portion at least as a multiple plate structure with folded over said thin metal plate.

[0013]

The lock main part of the locking plate has a multi-plate structure in which thin metal plates are folded, so that even if the locking plate is made of thin metal plates, the required locking rigidity can be obtained, while the long lever part has one thin wall. Since it is made of a metal plate, it is light in weight, and even if it engages with the latch when the trunk lid is rapidly closed, the inertial force is small, and it is possible to prevent the locking rod from bouncing back in the unlocking direction due to repulsion.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

In FIG. 1, a latch 3 which is engaged with and disengaged from a striker 11 is rotatably supported by a support shaft 6 on a lock base 2, and a locking plate 4 which is engaged with and disengaged from the latch 3 is supported by a support shaft 7. A set spring 5 is rotatably supported, and a set spring 5 is stretched over the latch 3 and the locking plate 4 to urge a turning force in a direction in which the lock teeth 3a and 4a are engaged with each other, and the locking plate. 4 has a lock lever 8a having a lock main portion 8 formed at one end thereof with a long lever portion 9 for engaging and disengaging a key lever of a key cylinder (not shown), and at the other end thereof an open lever (not shown) of an opener. Short lever part 10 to remove
The basic configuration such as the point that the extension is provided is the same as the above-mentioned conventional one.

Here, the locking plate 4 is formed of a thin metal plate, and at least the lock main portion 8 has a multiple plate structure by folding the thin metal plate.

In this embodiment, the lock main portion 8 and the short lever portion 1
0 has a multiple plate structure.

For example, as shown in FIGS. 2 and 3, this is a lock main part 8A in which a long lever part 9 and a short lever part element 10A are integrally formed, and a lock main part in which a short lever part element 10B is integrally formed. The element 8B and the short lever portion element 10A are integrally extended line-symmetrically at the edge of the short edge portion as a boundary, and the element 8B is bent at the continuous bases of the short lever portion elements 10A and 10B as a boundary to be superposed, thereby forming a multiple plate. It is as a structure.

Further, in this embodiment, the lock main element 8A,
8A and the short lever portion elements 10A and 10B are prevented from being displaced when they are superposed, a positioning flange 15 is formed upright on both side edges of the connecting portion of the lock main portion element 10A and the long lever portion 9. other, is provided on the upper end side edge of the locking main section element 8B positioning flange 16 as shown in FIG. 4, the positioning flange upper edge on the edge of the lock tooth elements 4a ₂ of the locking main unit elements 4a ₁ is engaged 17 May be provided.

According to the structure of the above-described embodiment, the lock main portion 8 of the locking plate 4 has the lock main portion element 8A made of a thin metal plate and the short lever portion element 10A, and the end edge of the short lever portion element 10A. Since the short lever portion element 10B and the lock main portion element 8B extending line-symmetrically to each other are folded to form a multiple structure of thin metal plates, sufficient lock rigidity can be obtained even if they are made of thin metal plates. .

Further, since the long lever portion 9 is formed of one thin metal plate, the weight is light even if the lever length is large,
Therefore, when the trunk lid (not shown) is suddenly closed, the latch 3
Even if they interfere with each other, the inertial force is small, and it is possible to prevent the locking rod 4 from rebounding and bouncing in the unlocking direction.

In the above embodiment, the lock mechanism 1 is on the trunk lid side and the striker 11 is the trunk opening edge 12.
Although the case where it is provided on the side has been described, it goes without saying that it may be provided in the opposite relationship.

[0023]

As described above, according to the present invention, since the locking plate is formed of a thin metal plate and the lock main portion has a multi-plate structure in which the thin metal plates are folded, lock rigidity is required. Since the rigidity of the lock main part can be sufficiently secured and the weight of the long lever part with a large lever length can be reduced, the locking plate can be secured by the inertia force with the mass of the long lever part as the mass when the trunk lid is closed rapidly. It is possible to avoid rebounding and rebounding in the unlocking direction after meshing with the latch once, and it is possible to perform a reliable locking operation, further improving the sense of quality and reliability.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a locking plate of the same embodiment.

FIG. 3 is a perspective view showing a folding process of the locking plate shown in FIG.

FIG. 4 is a perspective view similar to FIG. 3, showing a different example of a locking plate.

FIG. 5 is a schematic front view showing a lock stroke sequence of a conventional locking device.

FIG. 6 is a schematic perspective view showing a portion where a striker is provided at a trunk opening edge.

[Explanation of symbols]

 1 Lock mechanism 2 Lock base 3 Latch 3a Latch lock tooth 4 Locking plate 4a Rocking plate lock tooth 5 Set spring 8 Lock main part 9 Long lever part 10 Short lever part 11 Striker

Claims (1)

[Claims] 1. A lock mechanism provided on either one of a trunk lid and a trunk opening edge, and a striker provided on the other, and the lock mechanism is supported by a lock base and a lock base. It has a latch that engages and disengages with the striker, and a long lever part that engages and disengages the key lever of the key cylinder at one end of the lock main part that forms the lock tooth, and a short lever part that engages and disengages the open lever of the opener at the other end. A locking plate pivotally supported by the lock base, and a set spring stretched between the latch and the locking plate for urging a turning force in a direction in which the lock tooth of the locking plate and the lock tooth of the latch mesh with each other. In the above structure, the locking plate is formed of a thin metal plate material, and at least A trunk lock device, wherein a lock main part has a multiple plate structure in which the thin metal plates are folded.