JPH024210Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock device for an automobile, in which a door lock body is formed by sandwiching a resin body between a cover plate and a base plate that are in contact with the door.

As illustrated in FIG. 1, an automobile door lock device 1 is fixedly installed inside an end surface A1 of a door A. Particularly, in a door A for a rear seat of an automobile as shown in FIG. As shown in FIG. 2, since the end face portion A1 is narrow, the size, shape, dimensions, etc. of the door lock device 1 are restricted, and it is desirable that the door lock device 1 be small in terms of weight reduction. On the other hand, in recent years, efforts have been made to improve the anti-theft performance of automobiles, so if the key plate is left behind in the vehicle and the vehicle is locked, it becomes difficult to unlock the vehicle. Efforts are being made to ensure that this is not possible. That is, as shown in FIG. 3, the open lever 11, which rotates integrally with the pawl that engages and disengages from the latch, is made different between the latched position (solid line position) and the unlatched position (imaginary line position), so that the open lever 11 When the door A is in the latch position, that is, when door A is closed, the knob lever 12 can be operated using a knob inside the vehicle interior, and the key lever 13 can be reversed between the locked position (solid line position) and the unlocked position (imaginary line position). However, when the open lever 11 is in the unlatched position, that is, when the door A is open, the engaging end 15 of the key lever 13 interferes with the reversing prevention end 14 of the open lever 11, making it impossible to reverse the door. There is a device that prevents door A from being closed while being locked by a knob when door A is open. In such a door lock device 1, when the knob is strongly locked while the door A is open, a strong load is applied to the knob lever 12, and this strong load is further transmitted to the door lock body 2.

As shown in FIG. 4, the door lock body 2 is formed by sandwiching a resin body 23 between a cover plate 21 and a base plate 22 that contact the door A, and the mounting position is limited. Base plate 2 to support etc.
2 is provided with an extension 25 extending beyond the end 24 of the cover plate 21, and in this conventional example,
End 24 of cover plate 21 and resin body 2
Only the extension 25 protrudes from the end of 3.

However, in such a conventional door lock device 1, the extension portion 25 is not sufficiently supported by the cover plate 21 and the resin body 23, so a strong load is applied to the knob lever 12 as described above. In recent door lock devices 1, the strength and rigidity of the extension portion 25 tend to be insufficient, and as shown in the imaginary line in Fig. 4, the extension portion 25 may be bent and the door lock device 1 may not function properly. There was a problem.

The present invention was developed by focusing on these conventional problems, and aims to solve the above problems by increasing the size of the door lock device and reinforcing the extension portion without increasing the weight. It is said that

In order to achieve such an object, the present invention includes forming a reinforcing part of the extension part of the base plate extending beyond the end of the cover plate by extending the resin body diagonally from the end of the cover plate. This is an automobile door lock device characterized by the following, and the extension part can be reinforced with an extremely simple structure.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Note that the same parts as in the conventional example are given the same reference numerals and redundant explanations will be omitted.

5 to 7 show a first embodiment of the present invention, in which a fork-shaped latch 3 is pivotally supported on the door lock body 2 via a pivot 31, and a pole that engages and disengages from the latch 3. (not shown) is the pivot 32
It is supported by A knob lever 12 and an inside lever 1 are provided at one end of the base plate 22.
A support piece 26 supporting the cover plate 21 is folded, and an extension 25 is attached to the support piece 26 at the end 24 of the cover plate 21.
It is formed to be more elongated than the On the extension part 25, the knob lever 12 is pivotally supported by a pivot shaft 12a, and the inside lever 16 is pivotally supported by the pivot shaft 16a.
The engaging end 13a of the key lever 13 is engaged with the key lever 13. A cover plate 21 is attached to the extension part 25.
A reinforcing part 27 is formed by diagonally extending the resin body 23 from the end 24 of the reinforcing part 27, and a tip end 27a of the reinforcing part 27 abuts against the back surface 25a of the extension part 25 to support the extension part 25.

In the door lock device 1 having the above configuration, when a strong load is applied to the knob lever 12 from the knob and the load is transmitted to the support piece 26 via the pivot 12a and further transmitted to the extension part 25, the extension part 25 is reinforced. Since the reinforcement part 27 is reinforced, the load enters the reinforcement part 27 from the tip part 27a, the load is distributed to the resin body 23 and the cover plate 21, and the extension part 25 is strongly supported and will not be deformed. .

FIG. 8 shows another embodiment in which the reinforcing portion 27 is attached to the end 2 of the cover plate 21 due to space limitations.
4 to the back surface 25a of the extension part 25, the intermediate part is depressed and the reinforcing part 27 is formed in two stages: the first slope 27b and the second slope 27c. It is.

This embodiment can be used in cases where space is extremely limited.

According to the door lock device according to the present invention, although the structure is extremely simple in that the reinforcing portion is extended diagonally from the end of the cover plate toward the back surface of the extension portion of the base plate, the extension portion is significantly reinforced, and the extension portion is significantly reinforced. If used in recent door lock devices where strong loads tend to be applied to the extension part, such as
It is extremely useful because it can improve strength and rigidity without increasing weight.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the rear door of an automobile, Fig. 2 is a view taken in the direction of the arrow in Fig. 1, Fig. 3 is a rear view of the door lock device, Fig. 4 shows a conventional example, and Fig. 4 shows a conventional example. 5 to 7 show the first embodiment of the present invention, FIG. 5 is a front view of the door lock device, FIG. 6 is a view taken in the direction of the arrow in FIG. 5, and FIG. Fig. 8 is a sectional view of Fig. 7 showing another embodiment.
It is a figure equivalent figure. DESCRIPTION OF SYMBOLS 1...Door lock device, 2...Door lock body, 21...Cover plate, 22...Base plate, 23...Resin body, 24...End (of cover plate), 25...Extension portion, 27...Reinforcement Department.

Claims (1)

[Scope of utility model registration request] In a door lock device for an automobile in which a door lock body is formed by sandwiching a resin body between a cover plate and a base plate that are in contact with the door, an extension part of the base plate extending beyond an end of the cover plate includes: A door lock device for an automobile, characterized in that the resin body extends obliquely from an end of the cover plate to form a reinforcing portion of the extension portion.