JPH0578858U - Vehicle door lock device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a door lock device equipped with a limit switch that detects that the latch that engages with the striker on the vehicle body side when the door is closed is a full-latch, false detection of full-latch may occur due to variations in the accuracy of the limit switch. It is to prevent the occurrence. [Structure] When the latch 3 becomes a full latch, the first limit switch 6A that contacts the latch 3 to detect the full latch and the pole 4 that engages with the latch 3 when the latch 3 becomes a full latch A second limit switch 6B for detecting a full latch is provided, and when both limit switches 6A and 6B detect a full latch, it is determined as a full latch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device, and more particularly to a door lock device having a mechanism for detecting that a door is completely closed.

[0002]

[Prior Art]

 Vehicle doors are generally equipped with a mechanism to detect when the door is completely closed. 6 to 10 show a typical example of a conventional vehicle door lock device. A door lock device R is provided inside the rear end of a door 1 (a slide door in the example shown in FIG. 6). 13 is a door handle. The device R is provided with a latch 3 that engages and disengages with the striker 2 on the vehicle side when the door 1 is closed and opened, and a pole 4 that engages and disengages with the latch 3, and the latch 3 becomes a full latch to complete the door 1. It is equipped with a limit switch 6A that detects that the switch is closed. The latches 3 and the pawls 4 are stopped by stoppers 5a and 5b by applying rotational forces in the directions of arrow B and arrow C by springs (not shown) or the like. A pin 30 is projectingly provided on the latch 3. The limit switch 6A can be operated by a lever 60.

When the door 1 is closed, the striker 2 enters into the latch 3 (FIG. 7), and pushes the latch 3 to rotate it, resulting in a half-latch state (FIG. 8). When the latch 3 is further pushed by the striker 2, the pin 30 of the latch 3 approaches the lever 60 (Fig. 9), and when the door is completely closed and becomes the full latch, the pin 30 pushes the lever 60 and the limit switch 6A. Turns on or off (FIG. 10). In general, when the limit switch 6A detects a full latch, it is displayed on a display means such as a lamp in the vehicle compartment.

[0004]

[Problems to be solved by the device]

 However, each limit switch 6A may have a slight variation in accuracy. For example, if the lever 60 contacts the pin 30 of the latch 3 before the full latch as shown by the broken line in FIG. 9, the limit switch 6A will be fully latched. May be falsely detected and the vehicle may be driven in the half-latch state.

Further, recently, a closer motor for moving the striker forward and backward is provided on the vehicle body side, and when the limit switch detects a full latch, the closer motor is activated and the door is pulled inward together with the latch to increase the door closing force. , A door lock device is used to increase the sealing force around the door. In such a device, if the latch is pulled in by the striker in the half-latch state due to a false detection of the limit switch, the device may be damaged.

In order to prevent such inconvenience, it is necessary to thoroughly inspect each device after mounting the device and adjust the mounting position of the limit switch for those that may cause inconvenience. The sex is bad.

Therefore, the present invention has an object to provide a door lock device capable of accurately detecting the full-latch state even if there is some variation in the accuracy of the limit switch.

[0008]

[Means for Solving the Problems]

 The present invention is a door lock device having a latch 3 which is disengaged from a striker 2 and a pole 4 which is disengaged from a ratchet 3 as shown in FIGS. 1 to 5, and the latch 3 is a full latch as shown in FIG. In addition to providing the first limit switch 6A for detecting the full latch by contacting with the latch 3 when it becomes, the first limit switch 6A for detecting the full latch by contacting with the pole 4 engaged with the latch 3 when the latch 3 becomes the full latch is provided. A limit switch 6B of 2 is provided.

[0009]

[Action]

 When both limit switches detect a full latch, it is judged as a full latch, so even if there is some variation in the limit switches, the full latch is rarely erroneously detected. There is almost no need to re-adjust the position of the limit switch.

[0010]

【Example】

 1 to 5, the door lock device of the present invention will be described together with its operation.

FIG. 1 shows a state when the door is closed and the striker 2 contacts the latch 3. A latch 3 and a pole 4 are rotatably supported on a lock housing 10 provided in the door. The latch 3 has a striker engagement groove 31, and a rotational force in the direction of arrow B is urged by a spring (not shown), and the opening of the engagement groove 31 and the opening of the striker entry groove 11 provided in the door. It is received by the stopper 5a at the position where is coincident with. A pin 30 is provided on the latch 3 in a direction perpendicular to the plate surface. Rotational force in the direction of arrow C is applied to the pole 4 by a spring (not shown), and the pole 4 is held at a substantially horizontal position by the stopper 5b and is not engaged with the latch 3. The pole 4 is connected to a door handle 13 (FIG. 6) via a wire (not shown) or the like, and when the door handle 13 is pulled, it can be rotated against a spring.

A first limit switch 6 A is provided diagonally above the latch 3. A base end of a lever 60 made of a leaf spring is pivotally supported below the first limit switch 6A. The lever 60 is almost in contact with a switch rod 61a of the limit switch 6A, and a tip of the lever 60 rotates when the latch 3 rotates. It is held at a position projecting to the rotation orbit of. The pin 30 is not in contact with the lever 60 at the time of the half-latch. A second limit switch 6B is provided on the side of the stopper 5b of the pole 4. The second limit switch 6B is installed at a position where the pole 4 held by the stopper 5b pushes up the switch rod 61b to turn it on. The limit switches 6A and 6B are connected to the control circuit 7.

The striker 2 is U-shaped and is provided at the door opening edge of the vehicle body. A closer motor (not shown) is provided on the vehicle body in a position close to the striker 2, and is connected to the striker 2 by power transmission means. The closer motor is connected to the control circuit 7. The control circuit 7 outputs a signal to activate the closer motor when both limit switches 6A and 6B are turned on. The striker 2 is moved in the direction in which the door is pulled inward by the operation of the closer motor.

FIG. 2 shows a state in which the door is further closed. When the striker 2 enters, the latch 3 rotates in the direction of arrow D. This causes the pin 30 of the latch 3 to approach the lever 60 of the limit switch 6A. The pole 4 is pushed by one side surface of the leg end of the latch 3 to rotate in the direction of arrow E, separates from the second limit switch 6B, and the switch 6B is turned off. The switch rod 61b is set to project slightly below the stopper surface of the stopper 5b.

FIG. 3 shows the door further closed, and the pole 4 engages with the groove 32 at the leg end of the latch 3. At this time, the latch 4 rotates in the C direction and returns to the original position, and the second limit switch 6B is turned on again.

In the above process, the first limit switch 6A is off and the second limit switch 6B is on again from on to off.

FIG. 4 shows the state immediately before the full latch when the door is closed. The pin 30 of the latch 3 approaches the lever 60 of the first limit switch 6A. The pole 4 rotates in the E direction and separates from the second limit switch 6B, and the switch 6B is turned off. At this point, the pin 30 comes into contact with the lever 60 (illustrated by a broken line) due to the accuracy variation of the first limit switch 6A, and even if the switch 6A is turned on, the second limit switch 6B is turned off. Therefore, the control circuit 7 does not judge that it is a full latch.

FIG. 5 shows a state in which the full latch is achieved. By the rotation of the latch 3, the pin 30 pushes the lever 60 of the first limit switch 6A and the switch 6A is turned on. On the other hand, the pole 4 rotates in the D direction and contacts the stopper 5b, and the second limit switch 6B is turned on. As a result, the control circuit 7 outputs an operation signal to the closer motor on the vehicle body side, the motor rotates, and the striker 2 engaged with the latch 3 pulls the door inside the vehicle together with the latch 3, and the outer periphery of the door is completely sealed. Will be closed.

[0019]

[Effect of the device]

 In the present invention, a first limit switch that detects a full latch by the position of the latch and a second limit switch that detects the full latch by the position of the pole that interlocks with the latch are provided, and when both limit switches detect the full latch. Since it is determined to be a full-latch, even if the limit switch has a variation in accuracy, there is almost no false detection. Therefore, it is rarely necessary to readjust the position of the limit switch after mounting the device on the door.

[Brief description of drawings]

FIG. 1 shows the device of the present invention when the door is closed and the striker abuts the latch.

FIG. 2 shows the device of the present invention in a half-latched state immediately after the latch starts rotating.

FIG. 3 shows the device of the present invention in a half-latched state with the latch further rotated.

FIG. 4 is a diagram showing the device of the present invention immediately before entering the full latch state.

FIG. 5 shows the device of the present invention in a fully latched state.

FIG. 6 is a view showing an automobile door to which the present invention is applied.

FIG. 7 is a diagram corresponding to FIG. 1 of a conventional device.

FIG. 8 is a diagram corresponding to FIG. 3 of a conventional device.

FIG. 9 is a diagram corresponding to FIG. 4 of a conventional device.

FIG. 10 is a view of a conventional device corresponding to FIG.

[Explanation of symbols]

 1 door 2 striker 3 latch 4 pole 5a, 5b stopper 6A first limit switch 6B second limit switch 60 lever 7 control circuit

Claims (1)

[Scope of utility model registration request] 1. A vehicle door lock device comprising: a latch that engages with a striker when the door is closed; and a pawl that engages with the latch when the door is closed and that is disengaged from the latch by operating a door handle. Limit switch that contacts the latch and detects the full latch when the latch becomes the full latch, and the second limit switch that contacts the pole that engages with the latch when the latch becomes the full latch and detects the full latch A vehicle door lock device having a switch.