JPS62280472A - Door lock apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 3. Detailed description of the invention [Industrial application field] The present invention relates to a door lock device for an automobile door or the like.

[Prior Art] Conventionally, for example, a switch has been provided in an automobile door to detect a so-called ajar state in which a door lock device is not fully activated. And this kind of switch is
For example, it is installed below the door striker of the center pillar and is configured to be activated by contact with the door panel when the door is fully opened, or it is built into the door lock.
Some devices are configured to detect the position of the door lock latch when the door is fully opened. (Refer to Japanese Unexamined Patent Publication No. 56-75211) [Problem to be solved by the invention 1 However, in the former case, the reliability of operation depends on the installation or deformation of the door, so Accuracy is required, and assembly is complicated, and the rigidity of the door panel is increased by making the door panel thicker to prevent door deformation, which causes an increase in weight. Furthermore, since the door opening switch protrudes from the pillar, it is prone to damage and malfunction.

In the latter case, the switch is located inside the door, so damage is less likely to occur, but in order to pull the harness from the door side to the vehicle body side, the harness is bent at the door hinge, and is repeatedly bent and stretched each time the door is opened and closed. In addition to shortening the life of the harness, the length of the harness and the number of harness connectors increase by 1B, which may lead to higher costs.

This invention was devised in view of these conventional problems, and it is possible to improve the reliability of the door installation regardless of accuracy or deformation, and to reduce the cost by making it less susceptible to damage. The purpose of the present invention is to provide a door lock device that can achieve

[Means for Solving the Problems 1] In order to achieve the above object, the present invention provides a substantially U-shaped door striker having an engaging leg portion and a non-engaging leg portion fixed to the vehicle body side, and a door striker provided on the door side. and a door lock having a latch that engages with and engages with the engagement leg in a manner that allows the engagement and disengagement of the engagement leg and the latch. A configuration was adopted in which a detection switch was provided.

[Operation] According to this arrangement, the switch provided on the side of the non-meshing leg of the striker detects the engagement between the latch of the door lock and the meshing leg of the striker when the door is opened and closed. The operation of this switch is unaffected by the construction or deformation of the door as long as the latch and striker are engaged and disengaged. The striker itself acts as a protector for the switch. The harness can be pulled directly into the vehicle from the switch.

[Example 1 An embodiment of this invention will be described below.

Figure 1 is a front view of the meshing state of the door lock 1 and door striker 3 in the door lock device, and Figure 2 is the
A sectional view taken along the line -■ is shown. The door lock 1 is installed inside a door (not shown), and has an outside handle 5, an inside handle 7, a lock knob 9, and a key cylinder 11 connected to each other as shown in FIG. This door lock 1 has a latch 13 that removably engages with a door striker 3 provided on the vehicle body side, and this latch 13 is rotatably supported by a latch rotation shaft 15.

On the other hand, the door striker 3 is formed into a substantially U-shape having an engaging leg portion 17 and a non-engaging leg portion 19, and both leg portions 17.
19 are each fixed to a base plate 21 on the vehicle body side by means such as caulking.

The base plate 21 is provided with a mounting hole 23 on the side of the non-meshing leg 19 between the legs 9 and 11, and a switch 25 for detecting engagement and disengagement between the meshing leg 17 and the latch 13 is mounted in the mounting hole 23. ing.

That is, the switch 25 has a switch body 27,
The switch main body 27 is formed in a cross-sectional shape that follows the shape of a part of the corner between the non-meshing leg portion 19 and the base plate 21. This switch body 27 has waterproof boots 2.
The actuating element 31 is supported via 9 and protrudes toward the engaging leg portion 17 side.

Therefore, when the latch 13 comes into contact with the actuator 31, for example, a lamp circuit is opened. Further, a grommet portion 33 is formed on the switch body 27, and this grommet portion 33 connects to the attachment hole 21 of the base plate 21.
installed on.

The harness 35 is drawn into the vehicle body through the axial center of the grommet portion 33, and is connected to a lamp circuit (not shown).

On the other hand, a cam surface 13a is formed on the outer periphery of the latch 13. This cam surface 13a comes into contact with the actuator 31 of the switch 25 in the state shown in FIG. Alternatively, it has an uneven curved surface that does not come into contact with the actuator 31 when the door is ajar.

Next, the operation of the above embodiment will be described.

When the door is fully opened, that is, the striker engaging portion 13b of the latch 13 of the door lock 1 is engaged with the engaging leg portion 1 of the door striker 3.
7, the convex portion of the cam surface 13a of the first latch 13 comes into contact with the actuator 31 of the switch 25 as shown in FIG. This contact activates the actuator 31, turning off a lamp circuit (not shown) and extinguishing the lights inside.

In a state other than when the door is fully closed, for example, when the door is ajar, the striker engaging portion 13b of the latch 13 is engaged with the engaging leg portion 17, but the latch 13 rotates the latch rotation shaft 15 more than in the state shown in FIG. The cam surface 13a is located at a position slightly rotated counterclockwise from the center, and the cam surface 13a escapes from contact with the actuator 31 due to its recess. Therefore, the actuator 31 does not operate, and the interior light turns on to notify the door that the door is ajar.

Since the switch 25 is provided on the door striker 3 side, as long as the latch 13 engages with the door striker 3, the operation of the switch 25 is not affected by the installation or deformation of the door and operates accurately.

In addition, the switch 25 is connected to both legs 17.1 of the door striker 3.
Since it is located between 9 and 9, damage and malfunction can be prevented. In this case, the mounting holes 23 of the switch 25 are connected to both legs 17.
Although the mounting hole 23 is provided in the base plate 21 between the latch 19 and the latch 13, since the attachment hole 23 is located on the side of the non-meshing leg 19, the meshing strength of the meshing leg 17 with the latch 13 is maintained.

Furthermore, the harness 35 of the switch 25 can be drawn directly into the vehicle body from the grommet part 33, which suppresses bending of the harness 35 and extends its life, reducing the length of the harness 35 and the number of connectors. can be achieved.

FIG. 4 shows a modification of the mounting of the switch 37.

In this example, a cushioning resin 40 is molded onto the door striker 39, and a switch body 41 of the switch 37 is fixed by this resin 40. The harness 42 is drawn into the vehicle body through a through hole 43 provided in the door striker 39. Therefore, the base plate 45
Since a mounting hole for mounting the switch 37 is not required, the engagement strength of the door striker 39 with the latch can be further increased, and there is no need to provide a grommet part on the switch body 41, which simplifies the structure.

Next, other embodiments are shown in FIGS. 5 and 6. In this embodiment, a Hall element 50 is used as a switch, and this Hall element 50 is attached to a door striker 80 with a bracket 60.

A magnet M is attached to the latch 90 of the door lock 100. Therefore, according to this embodiment, durability is improved because there is no mechanical contact.

[Effects of the Invention] As is clear from the above, according to the configuration of the present invention, the switch operation is not affected by the installation or deformation of the door, and reliability can be improved. Additionally, the switch is protected by a door striker to prevent damage and malfunction. Furthermore, the harness of the switch can be drawn directly into the vehicle body, preventing bending of the harness, resulting in a longer life, and reducing costs by reducing the length of the harness, the number of connectors, etc.

[Brief explanation of the drawing]

FIG. 1 is a front view of the engaged state of the door lock and door striker according to an embodiment of the present invention, and FIG.
- sectional view taken along the line; Figure 3 is a perspective view of the door lock device;
Figure 4 is a sectional view showing another example of door switch installation;
The figure is a front view corresponding to FIG. 1 showing another example of the present invention, and FIG. 6 is a sectional view taken along the line ■--■ in FIG. 5. (Explanation of symbols representing main parts of the drawings) 1.100...Door lock 3.39.80...Door striker 13.90...Latch 17...Matching leg 19...Emergency meshing leg Part 25.37.50...Switch patent applicant Nissan Motor Co., Ltd. Agent Patent attorney Tamotsu Miyoshi

Claims (1)

[Claims] A door consisting of a substantially U-shaped door striker having an engaging leg portion and a non-engaging leg portion fixed to the vehicle body side, and a door lock having a latch provided on the door side and releasably engaging the engaging leg portion. A door lock device comprising: a switch disposed on a side of a non-meshing leg between the two legs to detect engagement and disengagement between the meshing leg and the latch.