JPH0549798B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vehicle door lock device.

(Prior art) The conventionally known Japanese Utility Model Publication No. 54-30317 discloses a door lock device 1 fixed to the door side, a striker (not shown) fixed to the vehicle body side, and a striker pivotally supported by the door lock device 1. In a vehicle door lock device comprising an operated lever 2 (lock lever), the rotary end of the operated lever 2 is engaged with a long hole 6 at the upper end of a connecting rod 5 that moves up and down. A structure is described in which the lower end is pivoted 9 to a swing gear 8 that moves up and down, and the swing gear 8 is meshed with a reduction gear 11 that is rotated by a motor 13.

Also, Utility Model Publication No. 118396 (1983)
No. 14740) is a locking device that has a structure in which when the door is closed, the head of a latch bolt on the lock device body side provided on the door side projects into a recess formed in the door frame on the vehicle body side, and the head of the latch bolt is , a structure is described in which a lock cam that engages and locks the flange of the latch bolt is fixed to the output shaft of the motor so as to prevent it from falling out of the recess of the door frame.

In addition, Utility Application No. 51-150007 (Utility Application No. 53-69919)
The specification and drawings include a door lock body fixed to the door side, consisting of a body, a metal cover plate attached to the front side of the body, and a metal back plate attached to the back side of the body, and a door lock body fixed to the vehicle body side. a fixed striker,
A latch is rotatably supported by a shaft provided upright on the door lock body and has an engagement groove formed on its outer circumferential surface to engage with the striker, and the latch engages with a full engagement step formed on the outer circumferential surface of the latch. a latch pivotally supported by a shaft parallel to the axis for preventing the latch from reversing; an open lever pivotally supported on the rear side of the door lock body for rotating the ratchet in a direction to release the latch from the latch; A door lock device for a vehicle is described, which includes a lock lever that is pivotally supported on a shaft parallel to the shaft provided on the back side of the main body and that engages and disengages the open lever and the ratchet.

(Problems to be Solved by the Invention) Among the above-mentioned public publications, the lock device described in Japanese Utility Model Application Publication No. 53-69919 has a lock device in which a striker fixed to the vehicle body engages with a rotary latch pivotally supported on the lock body. Since it is configured to be locked manually, it can be used for passenger car doors, but this is a conventional manual lock release switching type and not an electric lock release switching type.

In other words, the present invention provides a vehicle door lock device of this type in which locking can be switched electrically. This type of vehicle door lock device must be attached to the edge of the door, and must have a small structure so that it can be opened and closed even when the window glass is made as large as possible.

In that sense, looking at the lock device described in Publication No. 54-30317, the motor 13 is
Since it is not integrally fixed to the back side of the locking device main body 1, but is provided as a separate structure at a position away from the locking device main body 1, the number of parts increases, causing problems in opening and closing the window glass. However, the device is large and complex, and is not suitable for installation on the door of a passenger car.

Furthermore, the structure described in Japanese Utility Model Application Publication No. 54-118396 has a structure in which when the door is closed, the head of the latch bolt provided on the side of the locking device body projects into a recess formed in the door frame on the side of the vehicle body. Although it can be used as a locking device for the door of a truck or tractor, it cannot be used as a locking device for a passenger car that requires a luxurious feel.

In the door lock device disclosed in Japanese Utility Model Application Publication No. 53-69919, the lock lever is not fixed to the shaft, so even if the shaft is rotated by the motor, the lock lever does not rotate and cannot be driven by the motor.

(Object of the Invention) The present invention provides a locking device configured to be locked by engagement between a striker fixed to the vehicle body and a rotary latch pivotally supported on the lock body, in which the locking lever of the locking device can be switched by a motor. This is how it was done.

(Means for Solving the Problems) Accordingly, the present invention provides a door side door comprising a body 2, a metal cover plate 3 attached to the front side of the body 2, and a metal back plate 19 attached to the back side of the body 2. The door lock body fixed to the body and the striker S fixed to the vehicle body side
and a latch L that is rotatably supported by a shaft 5 that is erected from the front side to the back side of the door lock body and has an engagement groove 6 formed on its outer peripheral surface that engages with the striker S, and the latch L. A latch 11 is pivotally supported by a shaft 13 parallel to the shaft 5, which engages with a full engagement step 10b formed on the outer circumferential surface of the latch L to prevent the latch L from reversing. an open lever 42 that rotates the supported latch 11 in a direction to release it from the latch L; and an open lever 42 that is fixed to a shaft 30 parallel to the shaft 5 and is provided on the back side of the door lock body, and when rotated, the open lever 42 A lock lever 3 that engages and disengages the relationship between 42 and the ratchet 11.
1, an electric motor/rotary solenoid which is provided on the back side of the body 2, and whose rotational output shaft 61 is disposed so that its axial center is on an extension of the axial center of the shaft 30, and is integrated with the shaft 30; This is a vehicle door lock device comprising a rotary drive source M such as the following.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In the figure, 2 is a body made of synthetic resin (Figure 4),
3 is a cover plate (FIG. 3) attached to the front side of the body 2, and 19 is a back plate (FIG. 1) attached to the back side of the body 2.

As shown in FIG. 3, the cover plate 3 includes
A fitting groove 4 into which a striker S fixed to the vehicle body is fitted is formed, and a latch L is rotatably fixed by a shaft 5 erected so as to straddle this fitting groove 4.

An engagement groove 6 into which the striker S engages is formed on the outer peripheral surface of the latch L. Further, a circular arc groove 7 centered on the shaft 5 is formed in the latch L, and a cut and raised piece 8 integrally cut and raised from the cover plate 3 side is engaged in the circular arc groove 7. A compression spring 9 is inserted between the piece 8 and one end surface of the arcuate groove 7.

On the outer peripheral surface of the latch L, there is a half engagement step 1.
0a and a full engagement step 10b, and a ratchet 11 having an engagement pawl 12 that engages the half engagement step 10a and the full engagement step 10b is attached to the shaft 13.
The shaft is fixed by the Reference numeral 14 designates a spring that causes the ratchet 11 to snap onto the outer circumferential surface of the latch L, and reference numeral 15 designates an elongated hole formed in the longitudinal direction of the ratchet 11.

In FIG. 4, reference numeral 17 denotes a striker entry portion formed in the body 2, which has a flange 21 on the inlet side.

Reference numeral 19 denotes a back plate (Fig. 1) attached to the back side of the body 2, a part of which has a mounting part 19A that abuts and overlaps the striker entry part 17 raised on the back side of the body 2; The side is provided with a bent portion 26 bent at a right angle. The back plate 19 has a hole (not shown) through which the end of the shaft 5 projects to the back side.

Further, a shaft 30 (FIG. 4) is fitted into a hole (not shown) in the back plate 19, and a lock lever 31 is fixed to this shaft 30. This lock lever 31
At one end, there is a rising part 32 that rises at right angles to the back side, and at the tip of this rising part 32 there is an engaging protrusion 33 that is bent parallel to the back plate 19. The portion 51 is engaged. A forked portion 3 is provided at the other end on the opposite side of the engaging protrusion 33.
4 is formed. The fork portion 51 is connected to a key cylinder or lock knob operating device.

The elongated hole 15 in the ratchet 11 is located below (on the front side) one end 37 of the link 36 in the state shown in FIG.
Engage the pin formed in the Also, this end 37
A contact piece 38 is made to protrude from the upper side (back side).

The other end of the link 36 is slidably engaged in a guide trough 39 formed integrally with the body 2, as shown in FIG. A pin 40 protruding from the back side is provided at the other end of the link 36. This pin 40 engages the fork 34 of the lock lever 31.

Therefore, when the lock lever 31 is rotated around the shaft 30, the link 36 is displaced in its longitudinal direction via the forked portion 34, and the link 36 is displaced in its longitudinal direction.
The pin at one end 37 of 6 moves within the elongated hole 15.

As shown in FIGS. 2, 3, 5, and 6, an open lever 42 is rotatably fixed to the shaft 13 of the ratchet 11. open lever 4
2 is provided between the ratchet 11 and the back plate 19, and is biased to rotate clockwise in FIG. 5 by the action of a spring (not shown) wound around the shaft 13.

The open lever 42, as shown in FIG.
One end thereof is provided with a window hole 46 having an abutting protrusion 44 that abuts the abutting piece 38 of the link 36 and an air vibration groove 45 . An operation link 47 connected to the outside door opening handle of the automobile is connected to the other end of the open lever 42 by a pin 48. In addition,
There is a protrusion 49 at the end of the open lever where the window hole 46 is located.
is formed, and a lever that rotates when the inner door opening handle is operated engages with this protrusion 49.

In the unlocked position, link 3
6 is in the position shown in FIG. 5, and the abutting piece 38 faces the abutting protrusion 44. In this state, when the inner and outer door handles are operated to open the door, the open lever 4
2 in the counterclockwise direction in FIG. 5, the contact protrusion 44 of the open lever 42 presses the contact piece 38 in the direction shown by arrow B. As a result, the lower pin of one end 37 that is integral with the contact piece 38 pushes the inner wall of the elongated hole 15 of the ratchet 11, rotates the ratchet in the direction A in FIG. Remove the latch L from the latch L, and open the door with the latch L free.

When locked using the key or sill knob operation, the 6th
As shown in the figure, the lock lever 31 rotates in the direction of arrow c. Due to this rotation, the link 36 moves in the direction of arrow D, displacing the contact piece 38 at one end 37 along the elongated hole 15, and brings the contact piece 38 to a position facing the air vibration groove 45. .

In this state, the open lever 42 is opened by opening the door.
Even if the door is rotated counterclockwise, the air vibration groove 45 does not come into contact with the contact piece 38, and the ratchet 11 remains stationary and cannot be opened.

The above-mentioned locked and unlocked states occur when one end 37 of the link 36 moves to the locked and unlocked positions at both ends within the elongated hole 15, as shown in FIGS. 5 and 6. ,
Do not take an intermediate position between the two positions.

In FIGS. 1 and 2, M is a rotational drive source for rotating the locking lever 31 between the locking device and the unlocking position, and is constituted by, for example, an electric motor, a rotary solenoid, or the like.

As shown in FIG. 1, the back plate 19 is a separate mounting section 1 that extends upward from the mounting section 19A.
9B, and these mounting parts 19A, 19
B are fixed to the back surface of the body 2, overlapping each other at the middle portion.

The mounting part 60 of the drive source M is placed on the mounting part 19B, and the axis of the final rotation output shaft 61 is arranged so as to be on an extension of the axis of the shaft 30 of the lock lever 31. 30 and 61 become one. axis 30
The front end to which the lock lever 31 is fixed is fitted into the hole of the back plate 19 and is bearing as described above. The shaft 30 is also supported by the body 2 as shown in FIG. Therefore, the shaft 30 has a structure in which both ends are supported, the lock lever 31 operates accurately, and the drive source M does not malfunction.

An over-center spring 63 is provided as a holding member to provide a click motion to the lock lever 31 and prevent it from taking an intermediate position.
As shown in FIG. 7, this spring 63 is made of a wire made of an elastic material such as a piano wire and has a chevron-shaped raised portion 63A in the middle, and the intermediate portion 63B is wound around a pin 64 protruding from the mounting portion 19A. He, that part 63C
similarly engages with a pin 65 protruding from the mounting portion 19A, and the other end 63D engages with a hole at the tip of a plunger 66 of a solenoid S fixed on the mounting portion 19A. This spring 63 has an intermediate portion 6
3B, the chevron-shaped raised portion 63A has the elasticity to be displaced downward to the left in FIG.
This displacement is prevented by the chevron-shaped raised portion 63A coming into contact with the aforementioned pin 40.

As also shown in FIG.
It is adapted to be guided within the groove 69 of No. 8. In order to rotate the lock lever 31 about its axis 30, the link 36 (FIGS. 5 and 6) must be displaced approximately in its longitudinal direction; But the seventh
It is necessary to climb over the chevron-shaped protrusion 63A of the spring 63 between the solid line position and the chain line position in the figure. This gives the lock lever 31 a click motion. However, like this, pin 4
In order for 0 to overcome the elasticity of the chevron-shaped protrusion 63A of the spring and be displaced, a considerably large force is required, as already mentioned, and for this reason, the driving source M tends to be large.

The over-center spring 63 only serves to hold the pin 40 in its two end positions;
0 gets over the over-center spring 63, the chevron-shaped protrusion 63A is moved back so as not to provide resistance to the displacement of the pin 40. As a result, the driving source M is connected to the pin 4 via the lock lever 31.
The force applied to zero can be extremely small, and the driving source M can be made small and with low output.

An example of an electric circuit for obtaining the above effect is shown in the 9th section.
Figure A is shown. As shown in the figure, a drive source M (for example, a motor M capable of forward and reverse rotation) is connected to a DC power source E in parallel with the solenoid SOL, and the motor M
An operation switch SW is provided between the solenoid SOL and the power source E.

This operating switch SW is composed of, for example, a double switch. In the figure, when the operating switch SW is turned on to the upper contact side, the solenoid SOL is energized, its plunger 66 is attracted and retreated, and the motor M is rotated in one direction. Rotate.

Furthermore, when the operating switch SW is turned to the lower contact side, the solenoid SOL is similarly attracted and the motor M rotates in the opposite direction.

By using such an electrical circuit, when the operating switch SW is turned to either side to rotate the motor M in either direction and move the pin 40 between the two positions shown in FIG. At the moment when the pin 40 starts to be displaced, the plunger 66 of the solenoid SOL retreats and the chevron-shaped protuberance 63A of the over-center spring 63 moves toward the groove 69 of the guide 68 and retreats, so the pin 40 moves the chevron-shaped protrusion 63A elastically. It can be displaced between the two positions with very little force without being subjected to any resistance due to deformation. This means that the output of the motor M may be small, and as a result, the motor M can be made small.

When the operation switch SW is turned off when the motor M has finished displacing the pin 40, the solenoid SOL becomes de-energized and its plunger 66 moves forward with the force of the over-center spring 63, so the over-center spring 63 regains its function. and pin 4
0 is held at the position after displacement.

In addition, in the above example, motor M and solenoid
Although SOL is now energized at the same time,
The motor M may be energized after the solenoid SOL is energized and the chevron-shaped protuberance 63A of the spring is completely retracted. To do so, for example, a timer as shown in FIG.
Simply insert TM into the circuit.

FIG. 10 shows another embodiment of the present invention. In this example, the means for holding the pin 40 in the locked or unlocked position is provided by an engaging body 70 provided at the tip of the plunger 66 of the solenoid SOL, and a spring 71 that presses the engaging body 70 onto the trajectory of the pin 40. It is configured. The spring 71 is the plunger 6
It acts on the flange 72 of No. 6. 73 is a waterproof cover that can be expanded and contracted. The pin 40 is the engaging body 70
When the pin 40 is displaced, the solenoid
Since the SOL attracts the plunger 66 against the force of the spring 71 and moves the engaging body 70 backward, the pin 40
can be displaced without receiving any resistance from the engaging body 70 and the spring 71.

(Operation) When the door is closed, the striker S fixed to the vehicle body engages with the engagement groove 6 of the latch L, which is rotatably pivoted to the door lock body fixed to the door, and the latch L rotates. , the latch 11 is attached to the full engagement step 10b formed on the outer peripheral surface of the latch L.
The engaging pawl 12 engages with the lock to fully lock it. Therefore, the door closes smoothly and satisfies the requirements for a locking device for a passenger car.

When the lock lever 31 is locked by key operation or sill knob operation, the fork portion 51 moves in the direction of the arrow in FIG. in the direction of arrow D, link 36
The abutment piece 38 at one end 37 is displaced along the elongated hole 15 of the ratchet 11, so that the abutment piece 38 faces the air vibration groove 45 of the window hole 46 as shown in FIG.

In the state shown in FIG. 6, even if the door opening handles inside and outside the door are operated to open the door and the opening lever 42 is rotated counterclockwise around the shaft 13, the inner periphery of the air vibration groove 45 is Since it does not contact 38, there is an empty vibration, and the latch 11 does not move and the engaging pawl 12 remains engaged with the latch L and does not come off and the door cannot be opened.

However, when the lock lever is unlocked by operating the key or the sill knob, the lock lever 3 appears in Fig. 6.
1 rotates in the opposite direction of arrow c, and by this rotation,
The link 36 moves in the opposite direction of arrow D, displacing the contact piece 38 at one end 37 in FIG. 6 along the elongated hole 15 of the ratchet 11 to the position shown in FIG. 46 so as to face the contact portion 44.

In this state, when the handles inside and outside the door are operated to open the door and the open lever 42 is rotated counterclockwise around the shaft 13, the abutting portion 44 of the window hole 46 abuts the abutting piece 38. The latch 11 rotates, and its engagement pawl 12 engages the full engagement step 1 of the latch L.
0b, and the door can be opened.

Next, to describe the actions after FIG. 9A, when the operating switch SW is turned on to the upper contact, the rotational drive source M and the solenoid SOL are energized at the same time, and the solenoid SOL is energized and attracts its plunger 66. The plunger 66 moves the chevron-shaped protrusion 63A of the over-center spring 63 shown in FIG.

At the same time, the rotary output shaft 61 is rotated by the energized rotary drive source M, the shaft 30 integrated with the rotary output shaft 61 is rotated, and the lock lever 31 fixed to the shaft 30 is displaced between the lock and unlock positions. let

In the case of FIG. 9B, since there is a timer TM, the rotation of the rotational drive source M is controlled by the rotation of the rotational drive source M and the chevron-shaped protrusion 63A of the over-center spring 63.
The action of moving the pin 40 away from the movement trajectory is performed with a time lag.

Furthermore, in the embodiment shown in FIG. 10, an engaging body 70 is used instead of the spring 63, which overlaps and disengages from the locus of movement of the pin 40, but the effect is the same.

When the drive source M is energized to rotate the rotary output shaft 61 and the shaft 30 integrated with the rotary output shaft 61 is rotated to switch the lock lever 31 between the lock and unlock positions, the shaft 30 of the present invention:
Because of the structure in which the fixed end of the lock lever 31 is fitted and pivotally supported by the back plate 19 or the body 2, the lock lever 31 rotates accurately and the drive source M is less likely to malfunction.

(Effects) The present invention provides a door lock main body fixed to the door side, which is composed of a body 2, a metal cover plate 3 attached to the front side of the body 2, and a metal back plate 19 attached to the back side of the body 2, and a door lock body fixed to the door side. A striker S fixed to the side and a shaft 5 erected from the front side to the rear side of the door lock body are rotatably supported, and an engagement groove 6 that engages with the striker S is formed on the outer peripheral surface. a latch L, a latch 11 pivotally supported by a shaft 13 parallel to the shaft 5 that engages with a full engagement step 10b formed on the outer peripheral surface of the latch and prevents the latch L from being reversed; and the door lock body. an open lever 42 that rotates the latch 11, which is pivotally supported on the back side of the latch, in a direction to separate it from the latch L;
a lock lever 31 which is fixed to a shaft 30 parallel to the shaft 5 and is provided on the back side of the door lock body and which engages and disengages the open lever 42 and the ratchet 11 when rotated; and the body 2. The rotation output shaft 61 is provided on the back side of the
This is because the vehicle door lock device comprises a rotary drive source M such as an electric motor or a rotary solenoid, which is arranged so that the shaft center is on an extension of the shaft center of the shaft 30 and is integrated with the shaft 30. , a door lock body fixed to the door side, a striker S fixed to the vehicle body side, a latch L that engages with the striker S to rotate, and a latch L that engages with the outer peripheral surface of the latch L to prevent the latch L from reversing. Since it has a structure with a ratchet 11 that prevents locking, the door can be closed quietly and smoothly, making it a locking device suitable for passenger cars.

a lock lever 31 which is fixed to a shaft 30 and is provided on the back side of the door lock body and which, when rotated, engages and disengages the open lever 42 and the ratchet 11; and the body 2.
From the configuration with a rotary drive source M such as a motor or rotary solenoid, which is provided on the back side of the rotary output shaft 61 and is arranged such that the shaft center of the rotary output shaft 61 is on an extension of the shaft 30 and is integrated with the shaft 30. Therefore, the locking lever 31 of the locking device by the engagement of the striker S and the rotary latch L can be switched between locking and unlocking by the rotational drive source M.

In particular, the axis of the rotational output shaft 61 is arranged so as to be on an extension of the axis of the shaft 30, and the axis
0, it is easy to transmit power from the output shaft 61 to the shaft 30, and since no lever or the like is interposed between them, the output shaft is small and inexpensive. In conventional products, the output shaft and lock lever shaft were separated, so a lever connection was required between them.

Furthermore, since the rotary output shaft 61 and the shaft 30 are integrated, there is almost no loss during power transmission, so the rotary drive source M itself can be made smaller, and it can be easily used inside the narrow door of a passenger car. It is now possible to install it, and the window glass can also be made larger.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the locking device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view showing members on the cover plate of the device, and FIG. 4 is a perspective view showing members on the body of the device. The perspective view shown in Fig. 5 shows the open lever,
Plan view showing interlocking links and ratchets, No. 6
The figure is a plan view showing the relationship between the open lever, link and lock lever, Figure 7 is a plan view explaining the operation of the main parts in Figure 2, and Figure 8 is the same as in Figure 7.
Line sectional view, Figures 9A and B are electrical circuit diagrams, Figure 10
The figure is an embodiment diagram showing a modification of the apparatus shown in FIG. 7. Explanation of symbols, 2... Body, 3... Cover plate, 4... Fitting groove, 5... Shaft, 6... Engaging groove,
7... Arc groove, 8... Cut and raised piece, 9... Compression spring, 10a... Half engagement step, 10b... Full engagement step, 11... Ratchet, 12... Engagement claw, 13... shaft, 14... spring, 15... long hole,
17... Striker entry part, 19... Back plate, 19A... Placement part, 19B... Placement part, 2
1... Flange, 26... Bent part, 30... Shaft,
31... Lock lever, 32... Rising part, 33
...Engaging protrusion, 34...Forked portion, 36...Interlocking link, 37...One end, 38...Abutment piece, 39...
Guide gutter, 40... Pin, 42... Open lever, 44... Contact protrusion, 45... Air vibration groove, 46...
...Window hole, 47...Operation link, 48...Pin, 4
9...Protrusion, 51...Fork portion, 60...Mounting portion, 61...Rotation output shaft, 63...Over center spring, 63A...Chevron protrusion, 63B...Intermediate portion, 63C...One end, 63D...Other end, 64...
...Pin, 65...Pin, 66...Plunger, 6
8... Guide tool, 69... Groove, 70... Engaging body, 7
1...Spring, 72...Flange, 73...Waterproof cover, SOL...Solenoid, L...Latch, M
... Drive source, S ... Striker, E ... Power supply,
SW...Operation switch, TM...Timer.

Claims (1)

[Claims] 1 A body 2, a metal cover plate 3 attached to the front side of the body 2, and a metal back plate 1 attached to the back side of the body 2.
A door lock body fixed to the door side consisting of 9,
A striker S fixed to the vehicle body side is rotatably supported by a shaft 5 erected from the front side to the back side of the door lock body, and an engagement groove 6 for engaging with the striker S is formed on the outer peripheral surface. Latsuchi L
and a latch 11 supported by a shaft 13 parallel to the shaft 5 that engages with a full engagement step 10b formed on the outer peripheral surface of the latch L to prevent the latch L from reversing; an open lever 42 that rotates the latch 11, which is pivotally supported on the back side, in a direction to release it from the latch L; and an open lever 42 that is fixed to a shaft 30 that is parallel to the shaft 5, and is provided on the back side of the door lock body and is rotatable. Then, a lock lever 31 that engages and disengages the open lever 42 and the ratchet 11, and a rotation output shaft 61 provided on the back side of the body 2 such that the axis thereof is on an extension of the axis of the shaft 30. A vehicle door lock device comprising a rotary drive source M such as an electric motor or a rotary solenoid, which is disposed in the shaft 30 and integrated with the shaft 30.