JPH0635090Y2 - Locking and unlocking device for vehicle door lock mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a locking / unlocking device of a type in which an electric actuator is used as a drive source for unlocking a vehicle door lock mechanism.

(Prior Art) Conventionally, as an electric actuator in a locking / unlocking device for a vehicle door lock mechanism of this type, one using an electromagnetic solenoid or one using a motor is known.

That is, in an electric actuator using an electromagnetic solenoid, the interlocking member at the end of the operating rod of the electromagnetic solenoid is connected to the pole of the door lock mechanism by the connecting pin.

Also, in the case where a motor is used as the electric actuator, as shown in FIG. 9, an interlocking member that moves in one direction by meshing with a pinion 16 provided on the output shaft of the motor 15.
The tip of 17 is connected to the pole 12 of the door lock mechanism 3 by a connecting pin 18.

Also, as is well known, when the door lock mechanism 3 manually closes the door in the open state, the pawl 12 is once rotated by the latch 7 in the unlock direction to close the door to the closed position. The urging force of the spring 14 returns the pole 12 to the locked position.

(Problems to be solved by the invention) By the way, in the above-mentioned conventional one, in both the former and the latter, the rotation of the pole in the unlocking direction due to the manual closing of the door is performed through the connecting pin and the associative member. This is done against the sliding or rotational resistance of the non-actuated electric actuator. Therefore, when the door is manually closed, a large force corresponding to the resistance of the electric actuator is required.

Also, the latter one, as shown in FIG.
When the pole 12 is rotated within a predetermined range around the center, the connecting pin 18 connecting the pole 12 and the interlocking member 17 is displaced by a predetermined amount a in a direction orthogonal to the longitudinal direction of the interlocking member 17. From this, the interlocking member 17 is moved while being inclined with respect to its longitudinal direction, as shown by the chain line in FIG.
For this reason, there have been problems such as wear and damage occurring at the meshing portions between the pinion 16 and the rack teeth of the interlocking member 17, and sometimes the meshing out of mesh with each other, resulting in malfunction.

In view of the above-mentioned conventional problems, the purpose of the present invention is to reduce the rotating force of the pole when the electric actuator is not operating,
The locking / unlocking of the vehicle door lock mechanism prevents disconnection at the connecting portion between the pole and the interlocking member to prevent the turning force of the pole from being transmitted to the electric actuator, and allows the pole to rotate smoothly and lightly. A lock device is provided.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention moves the interlocking member using the electric actuator as a drive source in one direction, thereby supporting the pole of the door lock mechanism with the support pin as a fulcrum. A locking / unlocking device for a vehicle door lock mechanism which is rotated as a lock to unlock the connection pin between the pawl and the interlocking member, and a roller loosely fitted to the outer periphery of the connection pin, The roller is fitted rotatably and movably, and a connecting hole that is long in the moving direction of the interlocking member is provided. When the electric actuator is operated, the connecting pin contacts the one end of the connecting hole via the roller. In this state, the moving force of the interlocking member is transmitted to the pole, and the turning force of the pole when the electric actuator is not operating moves along the connecting hole without being transmitted to the interlocking member. The roller and the connecting pin are broken, and the inner hole of the roller is
It is formed to have a size that allows a relative amount of displacement between the connecting pin and the roller in a direction orthogonal to the moving direction of the interlocking member when the pawl rotates within a predetermined range.

(Operation) According to the above configuration, by moving the interlocking member in one direction by the operation of the electric actuator, the moving force of the interlocking member is increased when the connecting pin is in contact with one end of the connecting hole via the roller. This is transmitted to the pole, and the pole is rotated around the support pin as a fulcrum to unlock the pole.

In particular, when the electric actuator is not operated, for example, the turning force of the pole when the opened door is closed causes the connecting pin that connects the pole and the connecting member to move along the connecting hole via the roller. As a result, the turning force is prevented from being transmitted to the electric actuator via the interlocking member. Further, when the connecting pin moves along the connecting hole via the roller, the roller moves while rotating along the side surface of the connecting hole. Therefore, the friction generated between the connection hole and the roller becomes rolling friction, the mutual wear between the side surface of the connection hole and the outer peripheral surface of the roller is small, and the rotation of the pawl is smooth and light.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 4 which shows the rear part of the vehicle from the side and in FIG. 1 which shows the door lock mechanism in an enlarged manner, the board 5 of the door lock mechanism 3 is mounted in the door panel of the door 2 by bolts or the like. On the upper side of the substrate 5, a body 1
Is formed with a notch 5a into which the striker 4 fixed at a predetermined position is removably inserted. Above the notch 5a, the latch pin 6 is used as a center for latching a door lock in the upper part of the substrate 5. 7 is rotatably arranged.

The latch 7 is formed with a locking groove 8 having one end opening which engages with the striker 4 in a disengageable manner. Further, the latch 7 is always biased in the unlocking direction (clockwise in FIG. 1) by the first spring 9, and by the arc-shaped elongated hole 11 and the pin 10 with the latch pin 6 as the center, In the figure, the rotation is restricted within the range between the lock position shown by the solid line and the lock release position shown by the chain line.

A pole 12 for releasably lockingly holding the latch 7 in a locked position is attached to a substantially central portion of the substrate 5 so as to be rotatable about a support pin 13 at a base portion thereof. The pawl 12 is always urged by the second spring 14 in a direction in which the pawl 12 is engaged with the latch 7, and the engaging surface of the pawl 12 is engaged with the engaging surface of the latch 7. The latch 7 is adapted to be retained in the locked position.

An operating motor 15 including a DC motor, a stepping motor or the like as an electric actuator for unlocking the door lock mechanism 3 by an electric switch operation is mounted on the lower portion of the substrate 5. A pinion 16 is provided on the output shaft of the operation motor 15, and an interlocking member 17 having rack teeth meshing with the pinion 16 is arranged on the plate surface of the substrate 5 so as to be slidable in one direction by an appropriate guide means. It is set up.

The pole 12 and the interlocking member 17 are connected by a connecting pin 18, a roller 20 and a connecting hole 19 which are arranged between these members. In this embodiment, a connecting pin 18 is projectingly provided at the tip of the pole 12. A roller 20 is rotatably fitted around the outer periphery of the connecting pin 18, and as shown in FIG. 2, the roller 20 is retained by a flange 21 fixed to the outer periphery of the tip of the connecting pin 18. There is. On the other hand, in the interlocking member 17, the roller 20 is rotatably and movably fitted, and a long hole-like connecting hole 19 is formed along the moving direction of the interlocking member 17.

In a state where the interlocking member 17 is at the forward end position, the pawl 12 is engaged with the latch 7 and holds the latch 7 at the lock position, the connecting pin 18 connects the roller 20 with the connecting hole.
It is in contact with one end of 19. And an electric actuator
When the pinion 16 of the output shaft rotates in a predetermined direction by the operation of 15 and the interlocking member 17 is moved downward, the moving force of the interlocking member 17 causes the connecting hole 19, the roller 20 and the connecting pin.
Transmitted to pole 12 via 18
Is rotated to the unlocked position.

Further, the hole length of the connecting hole 19 with respect to the moving direction of the interlocking member 17 allows rotation of the pole 12 in the unlocking direction when the door 2 is closed while the electric actuator 15 is in the non-operating state, and thus the pole 12 is rotated. It is set to a length such that the turning force is not transmitted to the interlocking member 17. That is, when the pole 12 is rotated in the unlocking direction, the connecting pin of the pole 12
When the roller 18 is in contact with the inner surface of the roller 20, the roller
By rotating 20 while rotating in the longitudinal direction of the connecting hole 19, the transmission of the turning force of the pole 12 is interrupted.

Moreover, the inner hole of the roller 20, as shown in FIG.
In the rotation of the pole 12 within a predetermined rotation range (from the lock position to the unlock position), the displacement amount a of the connecting pin 18 in the direction orthogonal to the moving direction of the interlocking member 17 is set in the inner hole of the roller 20. The hole diameter is set to an acceptable level. That is, in this embodiment, the radius r1 of the connecting pin 18 is
The relationship between the displacement amount a of the connecting pin 18 and the radius r2 of the inner hole of the roller 20 is set so that r2 ≧ r1 + a. Further, the outer diameter of the roller 20 is formed slightly smaller than the hole width of the connecting hole 19.

The roller 20 and the connecting pin 18 are made of a material having excellent wear resistance, for example, a metal material, and the interlocking member 17 is made of a synthetic resin material which is lightweight and has excellent wear resistance.

Door opening switches 22 and 23 for operating and stopping the electric actuator 15 are provided at predetermined positions on both inside and outside of the door 2.
Are provided respectively. Further, at a predetermined position of the door 2, there is provided a safety lock switch 25 which is turned on / off by pulling up and pushing down a door lock knob 24 attached to the upper edge of the door 2.

Next, referring to FIG. 5 showing an electric circuit of the on-vehicle battery 26, the switches 22, 23, 25, and the actuation motor 15, the safety lock switch 25 is attached to the battery 26 that supplies a driving current to the actuation motor 15. One terminal side is connected. To the other terminal side of the safety lock switch 25, one end side of the door opening switches 22 and 23 connected in parallel is connected, and
The other ends of the door opening switches 22 and 23 connected in parallel are connected to the operation motor 15.

This embodiment is constructed as described above. Therefore,
Door lock knob 24 is pushed down, safety lock switch
When 25 is turned off, the drive current from the battery 26 is not supplied to the operating motor 15 even if the door opening switch 23 on the outside of the door or the door opening switch 22 on the inside of the door is turned on. Therefore, the latch 7 and the pole 12 of the door lock mechanism 3 are held at the lock position shown by the solid line in FIG. As a result, the door 2 is locked in the closed state, and the door 2 is reliably prevented from being opened accidentally.

Next, when the door lock knob 24 is pulled up and the safety lock switch 25 is turned on and the door 2 is opened from the vehicle exterior side or the vehicle interior side, the door opening switch 22 or 23 inside or outside the vehicle is turned on. Then, the drive current from the battery 26 is supplied to the operating motor 15, and the pinion 16 is rotated integrally with the output shaft of the operating motor 15. This pinion
The rotation of 16 causes the interlocking member 17 to slide downward,
12 is moved to the unlocked position as shown in FIG. Then, the engagement state between the pawl 12 and the latch 7 is released. Then, the latch 7 is rotated in the unlocking direction (clockwise in FIG. 6) while pressing the striker 4 by the biasing force of the first spring 9, and at the same time, the elastic force of the weather strip around the door 2 is exerted. Door 2
Is released by a predetermined amount. After that, the door 2 is manually opened to an arbitrary position.
Is operated for a predetermined time to rotate the pole 12 to the unlocked position via the union member 17, and then stopped by the timer circuit.

As described above, when the door 2 is opened, the pawl 12 and the interlocking member 17 are returned to the original lock position by the urging force of the second spring 14.

Next, when the opened door 2 is closed, the latch 7 locks against the biasing force of the first spring 9 with the striker 4 fitted in the locking groove 8 of the latch 7 at the unlocked position. Is rotated in the direction. As the latch 7 rotates in the locking direction, the pole 12 is once pushed by the outer peripheral surface of the latch 7 and rotated in the unlocking direction, as shown in FIG. Then, the connecting pin 18 fixed to the pole 12 moves along an arc locus around the support pin 13 of the pole 12. Along with the movement of the connecting pin 18 that draws an arc locus, the roller 20 moves while rotating along one side surface of the connecting hole 19 of the interlocking member 17 in a state where a part of the inner hole and the connecting pin 18 are in contact with each other. To do. Further, the door 2 is closed to the closed position and the latch 7
When is rotated to the lock position, the pole 12 is rotated in the locking direction opposite to the above by the biasing force of the second spring 14 and engages with the latch 7 to lock the door.

A connecting pin as the pole 12 rotates in the locking direction
18 moves in an arc locus, and the roller 20 moves in the connecting hole 19
Move while rotating along the opposite side of.

As described above, when the connecting pin 18 moves along an arcuate locus along with the rotation of the pole 12, the roller 20
The friction that occurs between the connection hole 19 and the roller 20 as it moves while rotating along the side surface of the connection hole 19 is rolling friction with a small frictional force, unlike sliding friction. The movement is smooth and light, and the mutual wear between the connecting hole 19 and the roller 20 is reduced.

Further, the turning force of the pole 12 is the connecting hole of the interlocking member 17.
19 and a roller that moves while rotating along the connecting hole 19
It is prevented that it is disconnected between 20 and and is transmitted to the interlocking member 17. Therefore, when the opened door 2 is closed, unlike the case where the door 2 is closed against the rotational resistance of the actuation motor 15, the problem that the closing operation of the door 2 becomes heavy is solved.

In the above embodiment, the connecting pin 18 is fixed to the pole 12, and the interlocking member 17 is formed with the elongated connecting hole 19 into which the roller 20 loosely fitted to the outer periphery of the connecting pin 18 is fitted. But,
The configuration is not limited to this, and conversely to the above, a connection hole 19 may be formed on the pole 12 side and the connection pin 18 may be fixed to the interlocking member 17 side.

Further, as shown in FIG. 8 as an electric actuator,
The electromagnetic solenoid 15 may be used and the interlocking member 17 may be provided integrally with the operating rod 15a. However, also in this case, the connection pin 18, the roller 20, and the connection hole 19 are set to have the same relationship as that of the above-described embodiment.

(Effect of the Invention) As described above, according to the present invention, when the electric actuator is not in operation, for example, the turning force of the pole when the opened door is closed is obtained by connecting the pole and the connecting member. Since the existing connecting pin is broken by moving along the connecting hole via the roller, it is possible to prevent the turning force from being transmitted to the electric actuator via the interlocking member. Therefore, it is possible to prevent the closing operation of the door from becoming heavy. Further, when the connecting pin moves along the connecting hole via the roller, the roller moves while rotating along the side surface of the connecting hole. Therefore, the friction generated between the connecting hole and the roller becomes rolling friction, and the mutual wear between the side surface of the connecting hole and the outer peripheral surface of the roller is reduced. Moreover, the rotation of the pole is smooth and light, and the durability is excellent.

[Brief description of drawings]

1 to 8 of the drawings show an embodiment of the present invention, and FIG. 1 is a front view showing a vehicle door lock mechanism, and FIG.
1 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is an enlarged front view of essential parts, FIG. 4 is a side view showing a rear door of a vehicle, and FIG. 6 is a front view showing a state in which a door is unlocked by an electric actuator, FIG. 7 is a front view showing a locking / unlocking device of a door lock mechanism when closing a door, FIG. FIG. 8 is a front view showing another embodiment. FIG. 9 is a front view showing a prior art door lock mechanism. 1 …… Body 2 …… Door 3 …… Door lock mechanism 4 …… Strike 7 …… Latch 12 …… Pole 15 …… Actuating motor (electric actuator) 17 …… Interlocking member 18 …… Connecting pin 19 …… Connecting hole 20 …… Laura

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A locking and unlocking mechanism for a vehicle door lock mechanism, wherein a locking member is unlocked by rotating a pole of a door lock mechanism with a support pin as a fulcrum by moving an interlocking member using an electric actuator as a drive source in one direction. A locking device, wherein a connecting pin, a roller loosely fitted to the outer periphery of the connecting pin, a roller rotatably and movably fitted between the pole and the interlocking member, and movement of the interlocking member. A connecting hole that is long in the direction, and when the electric actuator operates, the moving force of the interlocking member is transmitted to the pole in a state where the connecting pin is in contact with one end of the connecting hole via the roller, and The turning force of the pole when not in operation is broken at the roller and the connecting pin that move along the connecting hole without being transmitted to the interlocking member, and The lock of the vehicle door lock mechanism is formed in a size that allows relative displacement of the connecting pin and the roller in the direction orthogonal to the moving direction of the interlocking member when the pole rotates within a predetermined range. Unlocking device.