JPH0336098B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock device for an automobile in which, by locking and unlocking one door, other doors can be automatically locked and unlocked at the same time.

This type of conventional door lock device locks the driver's side door of a car by operating a key from outside the car.
Alternatively, there is a device in which when a door is locked or unlocked by operating a knob from inside the car, all other doors are automatically locked or unlocked at the same time. (For example, see Utility Model Publication No. 53-13140.) According to this device, it is very convenient when a large number of passengers get on and off from each door at the same time, but when the driver gets on and off by himself, there are unnecessary doors. This means that the driver's side door must be locked and unlocked, which wastes electricity and is uneconomical. There are problems such as the generation of operating noise that makes the driver feel uncomfortable.

The present invention has been made with attention to such problems, and includes an independent operation of locking or unlocking one door, and a locking or unlocking of this one door followed by an operation of locking or unlocking the other door. An object of the present invention is to provide an automobile door lock device that solves the above-mentioned problems by allowing an operator to freely select an interlocking operation that automatically locks or unlocks the door.

Further, the present invention provides that when the driver's side door is locked by key operation from outside the vehicle, it is preferable from the viewpoint of safety that the other doors are always automatically locked. , When unlocking the door by operating a knob from inside the vehicle, it is desirable to be able to select between independent operation of the door alone and interlocking operation in conjunction with other doors, and that the door on the driver's seat side can be operated with a key from outside the vehicle. When unlocking the door using the knob and locking the door using the knob from inside the car, there are cases in which it is desirable to be able to select between independent operation and linked operation, and cases in which it is more preferable to only use linked operation. It is an object of the present invention to provide a door lock device for an automobile that can satisfy all of the operational conveniences and demands of customers.

In order to achieve these objectives, the present invention connects the key lever and knob lever to each other with some play, and uses the difference in the rotation range of both levers due to this play to automatically open other doors. The timing for activating the switch device for locking or unlocking the door is different between when the key is operated and when the knob is operated, and for key operations or knob operations that only require interlocking operation, the key lever or knob lever is used. If you want to operate the switch device within the normal rotation range that moves the locking/unlocking lever to the locking or unlocking position, and you want to select between independent operation and linked operation, please use the normal rotation of the key lever or knob lever. The switch device cannot be operated within this range (operation within this range is independent operation), and can be operated by rotating beyond the rotation range (in this case, it is called linked operation). ).

The present invention will be described below based on embodiments shown in the accompanying drawings.

1 to 5 show a first embodiment of the present invention.

Reference numeral 1 denotes a door lock device that is fixed to the inner surface of the free end of the door on the driver's side of an automobile, and includes a box-shaped main body (not shown) and a base plate 2 fixed to the front surface of the box-shaped main body (not shown).
It is equipped with

The base plate 2 includes a vertical base 2a fixed to the main body, and side pieces 2b and 2c bent forward at right angles at the top and bottom of the left edge of the base 2a.
It is equipped with

An open lever 4 with a shaft 3 is pivotally attached to the left middle portion of the base 2a. The open lever 4 includes a first arm 4a facing left, a second arm 4b whose tip is bent backward and facing right, and a third arm 4c facing downward.

The open lever 4 is biased counterclockwise in FIG. 1 by a torsion spring 5 wound around the shaft 3, and is normally in the first
A stopper 2 in which the arm portion 4a is formed by bending the middle portion of the left edge of the base portion 2a of the base plate 2 toward the front.
d, but by rotating it clockwise, which is the release direction, against the biasing force of the torsion spring 5, the pawl member (not shown) provided inside the main body is released. The door can be opened by removing the member (not shown) from the rotational trajectory and disengaging the latch member from a striker (not shown) fixed to the vehicle body.

Also, when the door is opened and then closed,
In conjunction with the engagement between the striker and the latch member, the open lever 4 can be rotated slightly in the release direction.

A central portion of an outside lever 7 extending in the left-right direction is pivotally attached to the upper center of the base portion 2a of the base plate 2 with a shaft 6. This outside lever 7 is constantly biased counterclockwise in FIG. 1 by a torsion spring 8 wound around the shaft 6.

The lower end of a rod 9 linked to the outside handle (not shown) of the door is linked to the right end of the outside lever 7, and when the outside handle is operated to open the door, the rod 9 is pushed downward. , the outside lever 7 can be rotated clockwise in FIG. 1 against the biasing force of the torsion spring 8.

In addition, at the lower right end of the outside lever 7,
The upper ends of the sub-levers 10 extending substantially in the vertical direction are connected. This sub-lever 10 includes a protrusion 10a that protrudes leftward from the middle part of the left edge, and when the lower end of the sub-lever 10 swings left and right, the protrusion 10a
The unlocked position shown by the solid line in FIG. The locking position shown by the solid line in FIG. 1 can be moved in either direction.

The lower end of the sub-lever 10 curves to the left and protrudes, and a front-facing locking piece 10b is bent at the tip. When the door is closed with the sub-lever 10 in the locked position, this locking piece 10b causes the open lever 4 to momentarily rotate clockwise in FIG. 1 together with the pawl member due to the entry of the striker into the main body. When it is opened, open lever 4
It engages with the third arm portion 4c of the lever 10 and functions to switch the sub-lever 10 to the unlocked position.

A horizontal stepped portion 10c facing right is formed slightly above the protrusion 10a on the left side edge of the sub-lever 10, and when this stepped portion 10c comes into contact with a stopper 11 cut and raised from an appropriate position on the base portion 2a,
The upward movement of the sub-lever 10 and the counterclockwise rotation of the outside lever 7 are prevented.

Thus, when the sub-lever 10 is in the unlocked position, the door can be opened by operating the outside handle.
By rotating the outside lever 7 in the clockwise direction in FIG. 2 via the rod 9 and pushing down the sub-lever 10, the second arm 4b of the open lever 4 is pushed by the protrusion 10a, and the open lever 4 When the door can be opened by rotating the outside handle in the unlocking direction, and the sub-lever 10 is in the locked position, no matter how much you operate the outside handle to open the door, the protrusion 10a of the sub-lever 10 will not close to the opening lever 4. Just by missing the second arm 4b,
The latch cannot be released.

Note that a long hole 12 is bored in the lower part of the sub-lever 10 and is oriented substantially in the vertical direction.

As clearly shown in FIG. 4, an intermediate portion of a bell crank-shaped inside lever 13 is pivotally attached to the side piece 2b of the base plate 2 with a shaft 14. As shown in FIG. The upper end of this inside lever 13 has one end attached to the inside handle of the door (not shown).
When the inside handle is operated to open the door, the rod 15 is pulled and the inside lever 13 is rotated counterclockwise in FIG. Push up the left end of the outside lever 7 with the upper edge of the arm facing the base 2a, and then use the outside handle to rotate the outside lever 7 clockwise in Figure 1. It is becoming possible to do this.

13a and 13b are bent leftward at appropriate positions at the upper and lower parts of the inside lever 13, and limit the rotation range of the inside lever 13 by abutting on the upper edge or the lower edge of the side piece 2b, respectively. This is a stop piece made like this.

An intermediate portion of a dogleg-shaped locking/unlocking lever 16 is pivotally attached to the center of the lower part of the base 2a of the base plate 2 with a shaft 17.

A pin 18 that engages with the elongated hole 12 of the sub-lever 10 projects from the front at the tip of the arm portion of the lock/unlock lever 16 that extends upward and to the right from the shaft 17 . Further, the tip of the arm portion 16b extending leftward from the shaft 17 of the locking/unlocking lever 16 passes through a vertically long rectangular opening 19 formed in the side piece 2c and projects to the left of the side piece 2c. ing.

Therefore, the lock/unlock lever 16 is
It is movable between a locked position as shown by a solid line in FIG. 1, in which the lever 10 is held in the locked position, and an unlocked position, as shown in solid line in FIG. 2, in which the sub-lever 10 is held in the unlocked position.

20 is an over center spring, one end 2
0a is fixed to the base 2a, and the other end 20b is fixed to the left side of the lock/unlock lever 16. As the lock/unlock lever 16 rotates, the other end 20b is fixed to the shaft 17.
By passing across the extension line L of the line connecting the center of the base and one end 20a fixed to the base 2a,
The biasing direction of this spring is reversed, and the lock/unlock lever 16
is always biased away from an intermediate position between the locked position and the unlocked position.

A protruding piece 16a facing forward is bent at the lower right part of the shaft 17 of the lock/unlock lever 16, and an arcuate hole 21 centered on the shaft 17 is bored at the lower left part of the shaft 17. ing.

A key lever 22 facing right is pivotally mounted on the shaft 17 so as to overlap the front surface of the lock/unlock lever 16. A fan-shaped recess 23 centered on the shaft 17 is cut in the lower right part of the shaft 17 in the key lever 22, and the protruding piece 16a of the lock/unlock lever 16 is inserted into the recess 23 in an appropriate position around the shaft 17. They fit together so that they can rotate by an angle. This protrusion 16a
As shown by solid lines in FIGS. 1 and 2, when the key lever 22 is in the neutral position where it is almost in a straight line with the arm 16b facing left of the lock/unlock lever 16, the left and right sides of the recess 23 are It is arranged so that it is located in the center between both side edges of.

At the lower left of the shaft 17 in the key lever 22,
When the key lever 22 is in the above-mentioned neutral position with respect to the locking/unlocking lever 16, it is perfectly aligned with the arcuate hole 21 of the locking/unlocking lever 16, and an arcuate hole 24 having the same shape and size as this arcuate hole 21 is bored. It is set up.

At the left and right ends of both arcuate holes 21 and 24, each end of a torsion spring 25 wound around the shaft 17 is bent forward between the base 2a of the base plate 2 and the lock/unlock lever 16. bent end 25
a and 25b are fitted and locked.

This torsion spring 25 biases the key lever 22 so that it is always maintained at a neutral position with respect to the lock/unlock lever 16. That is, when the key lever 22 is rotated clockwise or counterclockwise from the neutral position with respect to the locking/unlocking lever 16, both arcuate holes 21 and 24 are rotated, for example, in the third position.
As shown in the figure, the torsion springs 2
The distance between the bent ends 25a and 25b of the key lever 22 is narrowed, and the reaction force therebetween ensures that the key lever 22 is returned to the neutral position.

Note that the biasing force of the torsion spring 25 that attempts to maintain the key lever 22 in the neutral position is smaller than the biasing force of the overcenter spring 20 that biases the lock/unlock lever 16 toward the locked position or the unlocked position.

The upper right end of the key lever 22 is connected to the lower end of a vertically extending rod 26 whose upper end is connected to a key cylinder device (not shown) of the door.A key (not shown) is inserted into the key cylinder device and rotated. By moving the key lever 22, the key lever 22 can be rotated around the shaft 17 by pushing or pulling the rod 26.

In this case, as described above, the biasing force of the torsion spring 25 is smaller than the biasing force of the over-center spring 20, so when operating the key, before moving the locking/unlocking lever 16, the key lever is pressed against the locking/unlocking lever 16. 22 rotates slightly from the neutral position, and either the left or right side edge of the recess 23 touches the protruding piece 16.
The locking/unlocking lever 16 can only be moved against the biasing force of the over-center spring 20 after it comes into contact with a.

Therefore, by key operation, lock/unlock lever 1
In order to reliably move the key lever 22 to the locked and unlocked positions, it is not enough for the key lever 22 to rotate within the range from the position shown by the solid line in Figure 1 to the position shown by the solid line in Figure 2. , the key lever 22 must be rotated to a range that includes a rotation range in which the key lever 22 can rotate relative to the lock/unlock lever 16. In this embodiment, the rotation range of the key lever 22 is made to coincide with the range from the position shown by the phantom line in FIG. 1 to the position shown by the phantom line in FIG.

The upper end of a rod 27 extending in the vertical direction is connected to the lower right end of the key lever 22.

The lower end of the rod 27 is disposed within the switch device 28 so as to be freely slidable in the vertical direction.

Inside the switch device 28, when the key lever 22 reaches the position shown by the imaginary line in FIG. The lock switch 29 and the key lever 22 are
An unlocking switch 30 is provided along the sliding locus of the actuating part 27a, which is closed by the actuating part 27a when the unlocking switch 30 reaches the position shown by the imaginary line in the figure (switch operating position).

The locking switch 29 includes an electric actuator (not shown) provided in the door so as to forcibly move the locking/unlocking lever of the door locking device of the other door to the locked position when the locking switch 29 is closed by the operating part 27a. ).

Further, when the unlock switch 30 is closed by the actuator 27a, the unlock switch 30 operates an actuator provided in the door so as to forcibly move the lock/unlock lever of the door lock device of the other door to the unlock position. It was designed to let you do so.

As shown in FIG. 4, a knob lever 3 extending in the front and back direction is provided on the side piece 2c of the base plate 2.
1 is pivotally connected with an axis 32.

A U-shaped engagement groove 33 is cut into the rear end of the knob lever 31, and by holding the engagement groove 33 and sandwiching the left end of the lock/unlock lever 16 from above and below, the knob lever 31 can be locked and unlocked. They are linked to the lever 16 so as to be interlocked with each other.

The knob lever 31 has a locked position shown in solid lines in FIG. 4 in which the locking/unlocking lever 16 is maintained in the locked position, an unlocked position shown in solid lines in FIG. 5 in which the locking/unlocking lever 16 is maintained in the unlocked position, and further, The overstroke position A is slightly rotated counterclockwise from the locked position, as shown by the imaginary line in Figure 4, and the overstroke position A is slightly rotated clockwise from the unlocked position, as shown by the phantom line in Figure 5. between the overstroke position B and the shaft 3.
It can be rotated around 2.

Around the shaft 32 protruding to the left of the side piece 2c,
A torsion spring 34 is wound around the torsion spring 34.
Bent ends 34a and 34b formed by bending the upper and lower ends of 2 to the right are respectively engaged with the upper and lower parts of the front edge of the side piece 2c, and protrude slightly to the right from the side piece 2c. Due to this torsion spring 34, the force that tends to restrain the knob lever 31 between the locking position and the unlocking position as described later is absorbed by the overcenter spring 20, which biases the locking/unlocking lever 16 toward the locking position or the unlocking position. It is said that the biasing force of

On the upper and lower edges of the knob lever 31 between the shaft 32 and the rear end, fan-shaped protrusions 31a and 31b centered on the shaft 32 are connected.

When the knob lever 31 reaches the locked position, the upper protruding piece 31a comes into contact with the upper bent end 34a of the torsion spring 34, and the spring force of the torsion spring 34 causes the knob lever 31 to move further. However, by further rotating the knob lever 31 counterclockwise with a force greater than the restraining force, the knob lever 31 can be brought to the overstroke position A. I have made it possible.

Further, when the knob lever 31 reaches the unlocked position, the lower protruding piece 31b comes into contact with the lower bent end 34b of the torsion spring 34, and the spring force of the torsion spring 34 causes the knob lever 31 to move further than that shown in FIG. However, by further rotating the knob lever 31 clockwise with a force greater than the restraining force, the knob lever 31 can be rotated clockwise.
It is arranged so that the stroke can be brought to the overstroke position B.

The front end of the knob lever 31 is connected to a rod 35, one end of which is connected to a locking/unlocking knob (not shown) in a knob device provided at a suitable position on the door, and the other end of the rod 35 is connected to the knob, which can be operated with light effort. By doing so, the knob lever 31 can be switched to the locked position or the unlocked position, and by operating the knob with a force greater than the spring force of the torsion spring 34, the knob lever 31 can be moved to the overstroke position A or B. It is now possible to move it.

Next, the operation and handling of the device of the first embodiment will be explained.

When the door is closed and the door lock device 1 is in the locked state, the sub-lever 10, lock/unlock lever 16, and knob lever 31 are in their respective locked positions, as shown by solid lines in FIGS. 1 and 4. , and the key lever 22 is located at a neutral position with respect to the lock/unlock lever 16.

In this state, even if the outside handle or the inside handle is operated, the sub-lever 10 simply swings against the open lever 4, and the door cannot be opened.

In this state, if you wish to get out of the car by unlocking only the driver's door from inside the car, lightly operate the knob inside the car and turn the knob lever 31 to the unlocked position shown by the solid line in Figure 5. let

In conjunction with this, the lock/unlock lever 16 and the sub-lever 10 are located in the unlocked position, as shown by the solid line in FIG. On the other hand, it is maintained at a neutral position, resulting in the state shown by the solid line in FIG.

At this time, the rod 27 is pulled up by the upward rotation of the tip of the key lever 22;
7a does not cause the unlock switch 30 to close and therefore cannot activate the other door actuators.

In this state, only the driver's door can be opened by operating the inside handle or the outside handle, pushing down the sub-lever 10, and rotating the open lever 4 in the release direction.

In addition, if you want to operate the driver's door knob from inside the car to unlock that door and unlock other doors at the same time from the original locked state, you can use the light lock as described above. After operating the knob with and moving the knob lever 31 to the unlocked position, the knob is further operated with a force stronger than the spring force of the torsion spring 34, and the knob lever 31 is moved to the overstroke position B shown by the imaginary line in Fig. 5. Rotate.

Then, the lock/unlock lever 16 and the sub-lever 10
becomes the state shown by the imaginary line in Figure 2, and
The key lever 22 is maintained in a neutral position with respect to the lock/unlock lever 16 by the biasing force of the torsion spring 25, and reaches the position shown by the imaginary line in FIG.
7 and close the unlock switch 30 with the operating part 27a at the lower end.

When this unlock switch 30 closes, actuators provided in other doors operate,
Forcibly move the lock/unlock lever of that door to the unlocked position.

After the switch 30 is closed, when you release your hand from the door knob on the driver's side, the knob lever 31 returns to the unlocked position due to the biasing force of the bent end 34b of the torsion spring 34 in the counterclockwise direction in FIG. is,
As a result, the lock/unlock lever 16 and the sub-lever 10 return to the unlocked position shown in solid lines in FIG.
At the same time, the key lever 22 also returns to the state shown by the solid line in FIG. 2, and the unlock switch 30 is opened.

In this way, when unlocking the driver's side door from inside the car by operating the knob, it is possible to unlock only the driver's side door independently by operating the knob lightly, and it is also possible to unlock only the driver's side door independently by operating the knob lightly. By operating the knob with excessive force, other doors can be automatically unlocked.

Next, a case will be described in which the door on the driver's seat side is locked by operating the knob from inside the vehicle.

In this case, when the knob is operated lightly and the knob lever 31 is moved to the locked position, the lock/unlock lever 16 and the sub lever 1 are operated in the opposite manner to the above case.
0 is switched to the locked position shown in solid line in Figure 1,
The key lever 22 also returns to the position shown by the solid line in FIG.

At this time, the lower end of the rod 27 descends only to the position shown by the solid line in FIG.
cannot be closed, so only the driver's side door is locked independently.

From this state, when the knob is further operated with a strong force and the knob lever 31 is rotated to the overstroke position A shown by the imaginary line in FIG.
reaches the position shown by the imaginary line in Figure 1, and the rod 2
7 further descends and closes the lock switch 29,
The actuator of the other door is actuated to automatically lock the other door.

Therefore, when locking or unlocking the driver's side door from inside the car by operating a knob, the driver's side door may be locked or unlocked independently or linked to the operation, depending on the operator's selection. Other doors can also be automatically locked or unlocked.

Next, a case will be described in which the door on the driver's seat side is operated with a key from outside the vehicle.

As shown by solid lines in FIGS. 2 and 5, with the door lock device 1 in the unlocked state, insert the key into the key cylinder device from outside the vehicle and rotate it in a predetermined locking direction. Then, the rod 26 is pushed downward, and the key lever 22 is rotated clockwise in FIG. 2 about the shaft 17.

At this time, since the force of the torsion spring 25 is substantially smaller than the force of the over-center spring 20, the lock/unlock lever 16 cannot be rotated at the same time as the key lever 22 is rotated, and the key lever 22 is rotated.
Until the right side edge of the recess 23 comes into contact with the protrusion 16a, only the key lever 22 rotates independently.
The locking/unlocking lever 16 is not activated until it comes into contact with the protruding piece 16a.
will also rotate clockwise at the same time.

When the key lever 22 reaches the position shown in FIG. 3, which is the same position as shown in phantom lines in FIG.
At the same time as the lock/unlock lever 16 reaches the locked position,
The locking switch 29 is closed by the operating part 27a at the lower end of the rod 27, and other doors are automatically locked at the same time.

Therefore, when the driver's side door is locked by key operation from outside the vehicle, the other doors are automatically locked at the same time, and it is not possible to lock only the driver's side door alone. This prevents the user from forgetting to lock other doors.

Thereafter, when the key is loosened or removed from the key cylinder, the biasing force of the torsion spring 25 causes the key lever 22 to return to the state shown by the solid line in FIG. 1, and the lock switch 29 opens.

When unlocking by key operation from the locked state, first, from the state shown by the solid line in FIG. 16a, the lock/unlock lever 16 rotates in the same direction as the key lever 22, and when the key lever 22 reaches the position shown by the imaginary line in FIG.
6 stops at the unlocked position shown by the solid line in FIG. 2, but at the same time the unlock switch 30 is closed and the other doors are also unlocked at the same time.

Therefore, in this case as well, when the door on the driver's seat side is unlocked, the other doors are also unlocked at the same time, and it is not possible to unlock only the door on the driver's seat side alone.

After key operation, the key lever 22 is activated by the torsion spring 25.
Due to the urging force of , it is returned to the position shown by the solid line in FIG.

As described above, according to the device of the first embodiment, when locking or unlocking the door on the driver's seat side from inside the car by operating the knob, there are two operations: an independent operation of only that door and an interlocking operation in conjunction with other doors. When the operator can freely select and lock or unlock the vehicle by key operation from outside the vehicle, the lock is always linked to the operation.
Other doors can also be automatically locked or unlocked.

Therefore, from inside the vehicle, depending on the situation at the time, for example, if the driver is getting in and out of the vehicle alone, only the door on the driver's side can be locked and unlocked, and if there are other passengers getting in and out of the vehicle, By performing interlocking operations, it is possible to save other passengers from having to operate the knobs, and as a result, unlike conventional door lock devices,
This eliminates the waste of locking and unlocking unnecessary doors.

Further, when key operations are performed from outside the vehicle, other doors are always locked and unlocked in conjunction with each other, thereby making it possible to prevent forgetting to lock the doors.

FIG. 6 shows a second embodiment of the invention.

In this second embodiment, when the key lever 22 is in the neutral position with respect to the lock/unlock lever 16,
The left side edge of the recess 23' is brought into contact with the protrusion 16a, and there is play only between the protrusion 16a and the right side edge of the recess 23'.

The other configurations are the same as those of the first embodiment, and the same reference numerals as those used in the first embodiment are used to illustrate them, and detailed explanations are omitted (third embodiment). (The same shall apply to

In this second embodiment, the operation is the same as in the first embodiment when locking or unlocking is performed by knob operation and when locking is performed by key operation, and when unlocking is performed by key operation, Unlike the first embodiment, it is possible to select between independent operation and linked operation.

That is, when the key lever 22 is rotated counterclockwise in FIG. 6 by key operation and the lock/unlock lever 16 is moved from the locked position to the unlocked position, the key lever 22 is rotated with respect to the lock/unlock lever 16.
is in the neutral position, the left edge of the recess 23' is already in contact with the protrusion 16a, so when the key lever 22 is rotated in the same direction, the lock/unlock lever 1 is
6 begins to rotate, and when the key lever 22 reaches the position shown by the solid line in FIG. 6, the locking/unlocking lever 16 reaches the unlocking position.

However, at this time, the lower end of the rod 27 has only been pulled up to the position shown by the solid line in FIG. 6, and the unlocking switch 30 cannot be closed. Therefore, in this state, only the door on the driver's seat side is unlocked.

Further, at this time, the knob lever 31 is located at the unlocked position shown by the solid line in FIG.
Since all the embodiments are the same, the second embodiment will also be explained with reference to FIG. The restraining force of the torsion spring 34 that attempts to restrain the locking lever 31 in the unlocked position also acts on the locking/unlocking lever 16 via the knob lever 31.

Therefore, if the key operation is stopped in this state, the lock/unlock lever 16 remains stably stopped at the unlocked position shown by the solid line in FIG. Due to the force, it remains stably stopped at the position shown by the solid line in Figure 6.

However, from this state, if the key lever 22 is further rotated counterclockwise by key operation against the biasing force of the torsion spring 34 to the position shown by the imaginary line in FIG. Part 27
The unlock switch 30 can be closed by pressing a to automatically unlock other doors.

As the key lever 22 rotates at this time, the lock/unlock lever 16 is moved to the position shown by the phantom line in FIG. 6, and the knob lever 31 is moved to the overstroke position B shown by the phantom line in FIG. The return rotational force generated by the bent end portion 34b of the torsion spring 34 is transmitted through these levers in the opposite direction and acts on the key lever 22.

Therefore, when the key operation is stopped after the unlock switch 30 is closed, each lever is returned to the position shown by the solid line in FIGS. 5 and 6 by the return rotational force of the torsion spring 34.

In this way, in the second embodiment, when unlocking the driver's side door from outside the vehicle by key operation,
By operating the door with light force, only that door can be unlocked independently, and by operating the door with even stronger force, other doors can also be automatically unlocked.

Therefore, the operator has a wider selection range than the first embodiment, and eliminates the waste of having to unlock other unnecessary doors, especially when the driver wants to enter the vehicle alone from outside the vehicle. I can do it.

Note that, contrary to the case of the second embodiment, when the key lever 22 is in the neutral position with respect to the lock/unlock lever 16, the right edge of the recess 23' abuts the protrusion 16a, and the protrusion 16a and the recess 23' By creating play only between the left edge of the door and the left edge of the door, it is possible to select between independent operation and linked operation when locking with key operation, and only linked operation when unlocking with key operation. I can do it.

FIG. 7 shows a third embodiment of the invention.

In this embodiment, a stopper piece 36 facing right is provided on the upper front edge of the side piece 2c of the base plate 2, and when the knob lever 31 reaches the locked position, the protruding piece 31a moves toward the stopper piece 36.
When the knob lever 31 reaches this locked position, a locking switch (not shown) similar to the locking switch 29 in the first embodiment is closed.

With this configuration, when the door is locked by operating the knob, other doors are automatically locked as well, and only when unlocking by operating the knob, independent operation and linked operation can be performed. You can choose.

As is clear from the above, according to the present invention, there are cases in which locking or unlocking is performed from outside the vehicle by key operation;
When locking or unlocking from inside the car by operating a knob, the mode of operation and the resulting operation are different, and for one, the independent operation of locking or unlocking the door alone, and the locking of the door. or an interlocking operation that automatically locks or unlocks other doors following the unlocking. Depending on the situation at that time,
It is possible to provide an automatic door lock device for a car that gives the operator the freedom to select the most appropriate operation, eliminates the waste of locking or unlocking unnecessary doors, and eliminates forgetting to lock the door.
It is meaningful.

In addition, according to the present invention, the following operation method is possible, including the case of the above-mentioned embodiment.

(b) Out of the four operations of locking with a key, unlocking with a key, locking with a knob, and unlocking with a knob, it is possible to select between independent operation and linked operation of only one operation, and all other operations are Those that are linked operations.

(b) Among the above four operations, only one operation is a linked operation, and the other three operations can be selected between all single operations and linked operations.

(c) Locking with a key and unlocking with a key are linked operations, and locking with a knob and unlocking with a knob can be selected between independent operation and linked operation.

(d) Locking and unlocking with a key can be selected between independent operation and linked operation, and locking with a knob and unlocking with a knob are linked operations.

Further, in the above embodiments, the switch device 28 is connected to the key lever 22, but it may be connected to the knob lever 31 side.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention, and FIG. 1 shows a state in which the lock/unlock lever is in the locked position as a solid line, and a state in which the knob lever is overstroked from that state. Fig. 2 is a front view showing the state in which the lock/unlock lever is in the unlocked position with solid lines, and the state in which the knob lever is overstroked from that state is shown in imaginary lines. , a front view showing the state in which the lock/unlock lever has been rotated to the locked position by key operation, FIG. 4 is a longitudinal cross-sectional side view taken along line X-X in FIG. 1, and FIG. FIG. 6, a longitudinal side view taken along the Y-Y line, shows the second embodiment of the present invention, and shows the state in which the lock/unlock lever is in the unlocked position as a solid line, and the state in which the key lever is overstroked from that state. FIG. 7 shows a third embodiment of the present invention, and is a longitudinal sectional side view of the same portion as FIG. 4, showing a state in which the knob lever is in the locked position. . 1...Door lock device, 2...Base plate, 1
6...Lock/unlock lever, 16a...Protrusion piece, 20...Over center spring, 22...Key lever, 2
3, 23'... recess, 25, 34... torsion spring, 2
8...Switch device, 29...Lock switch, 30...
Unlock switch, 31...knob lever, A, B...overstroke position.

Claims (1)

[Claims] 1 A key lever that is pivotally mounted on a base plate and connected to a key cylinder device and that can be moved by key operation within a normal movement range to switch the locking/unlocking lever between a locked position and an unlocked position. , a knob lever which is pivotally mounted to the base plate, is connected to the knob device, and is movable within a normal movement range by being moved by knob operation to switch the locking/unlocking lever between a locked position and an unlocked position. , in an automobile door lock device that is interlockably connected to each other, when either one of the key lever and the knob lever moves to a predetermined switch operating position within the normal movement range, the other door is locked. a switch device that automatically locks or unlocks the door lock of the key lever, the other lever of the key lever or the knob lever can be moved to an overstroke position beyond the normal movement range, and the key lever and the knob lever are connected to each other. If the other lever is moved within the normal movement range, the one lever can only be moved within a small range that does not include the switch operating position, and the other lever cannot be moved within the normal movement range. A door lock device for an automobile, characterized in that a door lock device for an automobile is provided with enough play to enable the one lever to be moved to a switch operating position by moving the lever to an overstroke position.