JPH0754528A - Door lock device for vehicle - Google Patents

Abstract

PURPOSE:To reduce an operating load on an inside door handle by oscillating by a link an oscillating lever to transmit the motion of an inside door handle lever of a vehicle to a knob lever. CONSTITUTION:When a locking lever 13 is rotated to a lock position by the operation of a key cylinder lock or lock knob under closed door state, a connecting rod 20 of a connecting lever 21 displaces from a pressing part 19a of a cam hole 19 provided in an open lever 12 to a position corresponding to a clearance groove 19b. Even if an outside door handle is pulled under this condition, a door will not open. When an inside door handle is pulled from lock state, an inside door handle lever 16 is rotated, a knob lever 18 is pushed down by the lower end of an oscillating lever 22 mounted pivotally on an arm end 16a, and a locking lever 13 starts to rotate to unlock position. Then the other arm end 16b pushes up a projection 11a to depart a ratchet pole from a ratchet member, and the door opens.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device, and more particularly to a vehicle door lock device constructed so that the door can be opened only by operating an inside door handle without releasing the lock. .

[0002]

2. Description of the Related Art In a vehicle door lock device, a ratchet lever for giving a displacement to a ratchet pole in a direction for releasing the engagement between a latch and a striker is separated from a door handle by pushing down a lock knob. It is like this. Therefore, when getting off, the door cannot be opened unless the lock knob is in the unlocked position.

On the other hand, in general, even when the door is locked only in the driver's seat, the door can be opened by pulling the inside door handle without releasing the lock knob, so-called one. A motion opening mechanism is used.

An example of this type of apparatus is, for example, Japanese Patent Application Laid-Open No. 62-62.
The one disclosed in Japanese Patent Publication No. 253886 is known. This mechanism transmits the operating force of the outside door handle or the inside door handle to a ratchet lever for displacing the ratchet pole for holding the engaged state of the latch and the striker in the disengagement direction. The open lever is divided into an inner side open lever and an outer side open lever, and when the inner side open lever is operated to open the door, even if the lock knob is pushed in, the latch and striker The ratchet lever is rotated in the direction to release the engagement, and the pressing body pivotally supported by the inside lever rotates the lock lever from the lock position to the unlock position so that the door can be opened. ing.

Further, in this apparatus, when the inside door handle is pulled while the door is open and the lock knob is pushed down,
A so-called keyless lock mechanism is provided in which the open lever and the ratchet lever are not linked to each other, and when the door is closed in this state, the door is automatically locked.

[0006]

In the above conventional structure, the shaft of the pressing body is engaged with the slide edge formed on the mounting member, and when the inside lever is rotated, the pressing body presses the intermediate link. After being rotated, it is guided by the slide edge and moved in a direction in which the engagement with the intermediate link is disengaged, whereby the engagement between the lock lever and the open lever is disengaged.

That is, according to this structure, since the pressing body rotates while engaging with the slide edge, there is a disadvantage that the operating load of the inside door handle increases due to the friction of the engaging portion.

The present invention has been devised in order to eliminate such inconveniences of the prior art, and its main purpose is for a vehicle provided with a one-motion door opening mechanism that does not increase the operating load. It is to provide a door lock device.

[0009]

According to the present invention, such an object is to maintain a latch that is engageable with and disengageable from a striker provided on the vehicle body side, and to maintain the engagement state between the latch and the striker. Ratchet pole, a ratchet lever pivotally supported so as to give the ratchet pole a displacement in a direction to release the engagement between the latch and the striker, and the ratchet pole is connected to the outside door handle and is rotatable. An inside door handle lever pivotally supported, and an open lever pivotally supported on the ratchet lever, one end capable of contacting the end portion of the ratchet lever, and the other end coupled to the inside door handle, and pivotally supported. , A locking lever connected to a lock knob via a knob lever to select a linked or unlinked state between the ratchet lever and the open lever. A door lock device for a vehicle, comprising: one end connected to a main body of the door lock device via a link member; and the locking lever unlocked from a locked position in accordance with rotation of the inside door handle lever. A swing lever having the other end that engages with the knob lever to rotate to the locked position is pivotally supported by the inside door handle lever, and at the other end side of the swing lever associated with the door opening operation. The present invention is achieved by providing a vehicle door lock device characterized in that the movement locus is defined so as not to interfere with the turning locus of the knob lever at the operation limit of the door opening operation.

[0010]

According to this structure, the swing lever for rotating the locking lever via the knob lever is pivotally supported on the inside door handle lever, and the end portion of the swing lever is locked via the link member. Since it is connected to the device body, the knob lever is rotated by being pressed by the tip of the swing lever that is displaced as the inside door handle lever rotates, and the locking lever connected to this moves from the locked position to the unlocked position. And turn. At the same time, since one end of the swing lever is restrained via the link member, the swing lever also swings as the inside door handle lever rotates, and the other end is displaced in the direction away from the knob lever. To do. Finally, the knob lever is separated to a position where it does not interfere with the turning trajectory of the knob lever.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings.

1 to 3 show a latch mechanism to which the present invention is applied. The latch mechanism 1 is basically of a known type, and has a casing 4 in which a guide groove 3 is provided to allow a striker 2 fixed to the vehicle body to enter.
It is rotatable by being pressed by the striker 2 inside the
The latch member 5 is urged to rotate in the return direction by a spring means (not shown) and a pair of ratchet pawls 6a and 6b provided at appropriate positions on the outer periphery of the latch member 5 to prevent the latch member 5 from returning. It is supported by a ratchet pole 7 that does.

A notch 8 for engaging the striker 2 is formed at a proper position on the outer periphery of the latch member 5. Further, the ratchet pole 7 has a spring 9 for ratchet pawls 6a and 6b.
The latch member 5 does not hinder the rotation of the latch member 5 in the direction in which the striker 2 enters the guide groove 3, but the striker 2 is disengaged from both ratchet pawls 6a. The latch member 5 is engaged with any one of the latch members 6b to restrain the rotation of the latch member 5, and thereby the engagement between the striker 2 and the latch member 5 is held.

In the latch mechanism 1, the ratchet pole 7 and the ratchet pawl 6a on the full-latch side are engaged with each other in the completely closed state to hold the striker 2 in the notch 8. When the door handle (not shown) is operated in this state to release the engagement between the ratchet pawl 7 and the ratchet pawl 6a on the full-latch side, the latch member 5 is returned and rotated to release the striker 2 from the notch 8. .

A metal back plate 10 is attached to the back side of the casing 4. A ratchet lever 11 and an open lever 12 are coaxially supported by the back plate 10, and a locking lever 13 is also supported separately from the ratchet lever 11 and the open lever 12.

One end of the ratchet lever 11 is connected to the ratchet pole 7, and the ratchet lever 1
By displacing 1, the ratchet pawl 7 can be displaced in a direction in which the engagement with the ratchet pawls 6a and 6b is released.

A long hole 14 is formed at the other end of the ratchet lever 11, and a locking lever 13 is engaged with the ratchet lever 11 via a connecting rod described later.

The open lever 12, which is coaxially supported by the ratchet lever 11, has one end 12a connected to an outside door handle (not shown), and a rising portion bent and formed on a side portion of the back plate 10. The other end 12b is attached to an inside door handle (not shown) through an inside door handle lever 16 pivotally supported by 15.
Are connected. Further, the open lever 12 is elastically urged by a tension coil spring 17 in a direction against the door opening operation of the door handle.

The locking lever 13 has one end connected to a key cylinder lock (not shown) provided on the outer surface of the door, and the other end provided on the inner surface of the door via a knob lever 18 pivotally supported by the rising portion 15. Connected to a lock knob (not shown). Further, at the third end of the locking lever 13, a cam hole 19 formed in the open lever 12 and an elongated hole 14 formed in the ratchet lever 11 are provided.
A connecting rod 21 inserted in the end of the connecting rod 21 is pivotally supported by a connecting piece 21 provided at the end thereof.

At the upper edge of the cam hole 19 of the open lever 12, a pressing portion 1 for pressing the upper surface of the connecting rod 20 at the time of turning.
9a and a clearance groove 19b for disengaging the connecting rod 20 are formed, and the lower edge of the cam hole 19 is engaged with the lower surface of the connecting rod 20 to prevent the lateral movement of the connecting piece 21. Engaging protrusions 19c are formed.

The inside door handle lever 16 pivotally supported by the rising portion 15 has arms extending toward positions which are substantially symmetrical to each other when viewed from the center of rotation, and one arm end 16a. The swing lever 22
The middle part of is pivotally supported. And the other arm end 16
b is the other end 12b of the open lever 12 as described above.
The door opening operation force of the inside door handle can be transmitted to the open lever 12 by engaging with, and can be directly engaged with the projection 11a protruding from one end of the ratchet lever 11.

The swing lever 22 pivotally supported by the inside door handle lever 16 has a long hole 24 formed at the other end of a link member 23, one end of which is pivotally supported by the rising portion 15, and a pin 25 at the upper end thereof. The lower end thereof can press the engaging portion 26 formed on the knob lever 18. Further, the swing lever 22 is elastically biased by a torsion coil spring 27 in a direction in which the lower end thereof is engaged with the engaging portion 26 of the knob lever 18.

Next, the operating procedure of the above embodiment will be described. First, in the door closed state, the striker 2 is received in the notch 8, and the ratchet pole 7 and the ratchet pawl 6a on the full-latch side are held in engagement with each other (state of FIG. 3). When the locking lever 13 is rotated to the lock position by operating the key cylinder lock or the lock knob in this state, the connecting piece 21 is moved from the pressing portion 19a of the cam hole 19 provided in the open lever 12 to the position corresponding to the escape groove 19b. The connecting rod 20 of is also displaced. In this state (states of FIGS. 4 and 5), even if the outside door handle is pulled and the open lever 12 is rotated, the pressing portion 19a of the cam hole 19 cannot press the connecting rod 20. , The ratchet lever 11 cannot be rotated and the door does not open.

On the other hand, when the inside door handle is pulled from the locked state, the inside door handle lever 16 connected to the inside door handle rotates (direction of arrow A in FIG. 5), and one arm end of the inside door handle lever 16 moves. The lower end of the swing lever 22 pivotally supported by 16a pushes down the knob lever 18 (direction of arrow B in FIG. 5). Then, the locking lever 13 that interlocks with this starts rotating toward the unlock position (direction of arrow C in FIG. 4).

At the same time, the other arm end 16b of the inside door handle lever 16 opens the open lever 12.
Is rotated (in the direction of arrow D in FIG. 4), the engagement protrusion 19
Since c moves downward and the engagement with the connecting rod 20 is released, the locking lever 13 further rotates and the connecting rod 2
0 can be displaced to the unlock position. Also, the other arm end 16b of the inside door handle lever 16
Directly pushes up the projection 11a on one end side of the ratchet lever 11 (direction of arrow E in FIG. 5) to disengage the ratchet pole 7 from the latch member 5. Then, the latch member 5 opens the striker 2, so that the door is opened.

In the door open state, the ratchet pole 7 comes into contact with the outer peripheral surface of the latch member 5 and is displaced, so that the ratchet lever 11 also rotates in conjunction therewith and pushes down the connecting rod 20. Therefore, the lower part of the connecting rod 20 is the engaging projection 19c formed in the cam hole 19 of the open lever 12.
, The locking lever 13 cannot rotate,
When the door is open, the lock knob cannot be locked unless the door handle is pulled.

If the outside door handle or the inside door handle is pulled in the open state and the lock knob is moved to the lock position while the door handle is returned and the door is closed, the door can be locked without using the key. it can. The reason why the lock knob cannot be locked unless the door handle is pulled is to prevent the user from accidentally locking the door by intentionally operating it, thereby preventing the key from being left behind in the vehicle. This is because

When the one-motion door is opened, it is necessary to rotate the locking lever 13 from the lock position to the unlock position by pulling the inside door handle. However, when the keyless lock operation is performed, the inside door handle is opened. In contrast to the above, the locking lever 13 must be rotatable from the unlocked position to the locked position in the state of pulling. That is, after the inside door handle is pulled to rotate the locking lever 13 to the unlock position, the connection between the inside door handle and the locking lever 13 must be broken.

Therefore, in the present invention, the swing lever 2
When the knob lever 18 is pushed down to the unlocked position by linking the upper end of 2 to the main body of the apparatus, as shown in FIG.
As shown in, the lower end of the swing lever 22 is disengaged from the engaging portion 26 of the knob lever 18.

More specifically, the locking lever 1
The upper end of the back plate 1 via the link member 23.
Since the inside door handle lever 16 is rotated in the door opening direction, the lower end of the swing lever 22, that is, the engaging end with the knob lever 18, is connected to the rising portion 15 of 0.
It will be displaced outward while being displaced downward. As a result, when the inside door handle shown in FIGS. 6 and 7 is fully pulled and operated, the swing lever 22 does not interfere with the engaging portion 26 of the knob lever 18, and the knob lever 18 is moved to the locked position. You will be able to freely rotate. Therefore, when the inside door handle lever 16 is opened, the locking knob 13 can be pushed to rotate the locking lever 13 to the lock position.

On the other hand, when the inside door handle is returned after the keyless lock, it is necessary to release the swing lever 22 from the knob lever in the lock position. Therefore, the swing lever 22 is configured to be rotatable in a direction away from the knob lever, and when the interference relationship is released, the torsion coil spring 27 returns to the original position. The pin 25 at the upper end of the swing lever 22 is
Since the inside of the long hole 24 on the link member 23 side is displaced, the rotation on the swing lever 22 side does not affect the link member 23.

[0032]

As described above, according to the present invention, since the swing lever for transmitting the movement of the inside door handle lever to the knob lever is swung by the link, the friction generated when the swing lever is swung is eliminated. As a result, the operating load of the inside door handle is reduced.

[Brief description of drawings]

FIG. 1 is an operation explanatory view showing a state immediately before engagement of a striker in a latch mechanism to which the present invention is applied.

FIG. 2 is an operation explanatory view showing a state where the striker is in the middle of engagement.

FIG. 3 is an operation explanatory view showing a state in which the striker is completely engaged.

FIG. 4 is an operation explanatory view of the device of the present invention showing a state where the inside door handle lever is pulled a little in the locked state.

FIG. 5 is a side view from the right side of the device of the present invention shown in FIG.

FIG. 6 is an operation explanatory view of the device of the present invention showing a state where the inside door handle lever is fully pulled to unlock.

FIG. 7 is a side view from the right side showing the device of the present invention shown in FIG.

[Explanation of symbols]

 1 Latch mechanism 2 Striker 3 Guide groove 4 Casing 5 Latch member 6a, 6b Ratchet claw 7 Ratchet pole 8 Notch 9 Spring 10 Back plate 11 Ratchet lever 12 Open lever 13 Locking lever 14 Long hole 15 Start-up part 16 Inside door handle lever 17 Tensile coil spring 18 Knob lever 19 Cam hole 20 Connecting rod 21 Connecting piece 22 Swing lever 23 Link member 24 Long hole 25 Pin 26 Engaging portion 27 Torsional coil spring

Claims (1)

[Claims] 1. A latch detachable from a striker provided on the vehicle body side, a ratchet pole for holding an engagement state between the latch and the striker, and the ratchet pole including the latch and the striker. A ratchet lever pivotally supported to give a displacement in a direction to release the engagement, an open lever connected to the outside door handle and pivotally supported, and an end portion of the ratchet lever. An inside door handle lever that has one end that can come into contact and the other end that is connected to the inside door handle and that is rotatably pivotally supported; a state in which the ratchet lever and the open lever are linked or unlinked. A door lock device for a vehicle, comprising: a locking lever connected to a lock knob via a knob lever for making a selection. One end connected to the main body of the locking device via a link member, and the knob lever for rotating the locking lever from the locked position to the unlocked position as the inside door handle lever rotates An oscillating lever having an end is pivotally supported by the inside door handle lever, and a movement locus of the oscillating lever on the other end side in association with the door opening operation is the above-mentioned when the door opening operation is limited. A vehicle door lock device characterized in that it is defined so as not to interfere with a turning locus of a knob lever.