JP2001329731A - Latch device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch device for a vehicle preventing a half latching condition when an operator operates an opener device for opening a door. SOLUTION: This latch device 15 is provided with a latch member 21 engaging with a striker 14, a pole member 22 allowed to engage with the latch member 21, an open lever member 23 moving the pole member 22 in the engagement releasing direction for releasing engagement between the pole member 22 and the latch member 21, and a holding lever member 24 engageable with the open lever member 23. When the open lever member 23 is operated for opening the door, a stopper part 65 in the holding lever member 24 engages with an engagement part 53 in the open lever member 23, so that the open lever member 23 is held in the opening position. The holding lever member 24 is driven in the open lever member 23 holding condition releasing direction by means of a driving part 35 in the latch member 21 when the latch member 21 is turned in the engagement releasing direction for releasing engagement between the latch member 21 and the striker 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle latch device for holding a door such as a tailgate mounted on a vehicle such as an automobile in a closed state.

[0002]

2. Description of the Related Art Conventionally, a latch device has been used to hold an automobile tailgate in a closed state.
The latch device has a latch member provided on one of the vehicle body and the door, and a striker provided on the other. By engaging the pawl member (pawl) with the latch member, the engaged state between the striker and the latch member is maintained. When the pole member is opened by an operator, an open nanob device provided inside the vehicle as an opener device operable from inside the vehicle or an open key cylinder device provided outside the vehicle as an opener device operable from outside the vehicle. Then, the engagement with the latch member is released.

[0003] The latch member is provided with a so-called half-latch locking portion in order to prevent the door from suddenly opening even if the pawl member and the latch member are disengaged for some reason. Have been. Usually, an elastic body such as a weather strip or a door opening assist spring is provided between the vehicle body and the door body, and when the operator releases the engagement between the pole member and the latch member by the opener device, The door body is lifted to a position beyond the half latch position by the repulsive force of the elastic body, and the door body can be opened by hand.

[0004]

In the above-mentioned conventional latch device, when the operator operates the opener device to open the door,
If the lift of the door body is insufficient due to freezing of the peripheral edge of the tailgate, which is the door body, the pole member will engage the latch member at the half-latch position when the operating force of the opener device is released. There is. In this case, even if the operator attempts to lift the door by hand, the door cannot be opened, so the operator has to perform the opening operation of the opener device again, which causes a problem that the operation is troublesome.

Accordingly, an object of the present invention is to prevent the door from suddenly opening even if the pawl member and the latch member are disengaged for some reason.
It is an object of the present invention to provide a vehicular latch device that can prevent a half-latch state even when an amount of lifting of a door body is insufficient when an operator opens a door of an opener device.

[0006]

According to a first aspect of the present invention, there is provided a vehicle latch device for achieving the above object. In the latch device of the present invention, when the opener device is operated to open the door, the open lever member rotates to the open position, so that the pawl member is in the disengaged position and the pawl member is disengaged from the latch member. At this time, the open lever member is held at the open position by engaging the holding lever member with the open lever member.

[0007] When the opener device is opened as described above and the pawl member and the latch member are disengaged from each other, usually the door body is slightly lifted by the elasticity of the weather strip or the door opening assist spring. The latch member moves beyond the half-latch position to the side of the disengagement position. In the latch device of the present invention, even if the lift amount of the door body is insufficient for some reason, the open lever member is held at the open position by the holding lever member, so that the door body can be forcibly opened by hand. . When the latch member pivots, the latch member pivots from the second meshing position to the non-meshing release position, and the latch member is engaged with the holding lever member, whereby the holding state is released. .

When the door is in the closed state and the pawl member and the latch member are disengaged for some reason, the holding lever member does not restrict the operation of the pawl member at all.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a latch device for a vehicle according to an embodiment of the present invention. The automobile 10 as an example of the vehicle shown in FIG.
At the rear of the vehicle, there is an openable / closable door body 12 called a tail gate or a rear gate. The door body 12 is supported by a hinge 13 provided on the upper part of the vehicle body 11 so as to be openable and closable in a vertical direction. In the illustrated example, a striker 14 is provided on the door body 12 side. On the vehicle body 11 side, a latch device 15 that holds the door body 12 in a closed state by being engaged with the striker 14 is provided. Conversely, a striker 14 may be provided on the vehicle body 11 side, and a latch device 15 may be provided on the door body 12 side.

The latch device 15 shown in FIG. 1 has a base member 20 made of a thick metal plate or the like. The base member 20 is provided with a latch member 21, a pawl member 22, an open lever member 23, a holding lever member 24, a detection switch 25, and the like described below.
The striker 14 is moved along the guide groove 26 formed in the base member 20 from the fully closed position shown in FIG. 1 (the position at which the door body 12 is fully closed) to the semi-closed position shown in FIG. After that, the door moves to a door opening position shown in FIG.

The latch member 21 is rotatable about a shaft 30, and is urged by a latch spring 31 counterclockwise in FIG. 1 (in the direction indicated by arrow F1).
The latch member 21 includes a meshing concave portion 32 capable of meshing with the striker 14, a locking portion 33 for full latch, a locking portion 34 for half latch, a driving portion 35 including a convex portion, and the like. Are formed along the opposite direction. The latch portion 33 for full latch from the rotation center C of the latch member 21
Is smaller than the distance (radius) r2 from the rotation center C of the latch member 21 to the tip of the half-latch locking portion 34.

The latch member 21 is engaged with the striker 14 in a fully-closed state at a first meshing position (FIG. 1).
The shaft 30 is rotatably supported so that a second meshing position (FIG. 2) for meshing with the striker 14 and a meshing release position (FIG. 5) for releasing meshing with the striker 14 can be taken. . The latch spring 31 is configured to move the latch member 21 to the first position.
It is urged from the meshing position (FIG. 1) to the mesh releasing position (FIG. 5) via the second meshing position (FIG. 2).

The pole member 22 is rotatable about a shaft 40, and is urged clockwise (in the direction indicated by arrow F2) in FIG. The pawl member 22 is provided with the locking portions 33, 3 of the latch member 21.
4 and a receiving portion 43 protruding in the direction of the holding lever member 24.

As shown in FIG. 1, when the contact portion 42 is in contact with the latch portion 33 for full latch, the latch member 21 is held at the first meshing position. As shown in FIG. 2, when the contact portion 42 comes into contact with the half-latch locking portion 34, the latch member 21 is held at the second meshing position. Further, the pawl member 22 can rotate to an engagement release position (FIG. 4) in which the pawl member 22 does not come into contact with either the full latch portion 33 or the half latch portion 34. Pole member 22
When the latch lever 21 is rotated to the disengaged position, the latch member 21 is allowed to rotate to the disengaged position (FIG. 5). The open lever member 23 is rotatably supported by the shaft 50, Arrow F
It is biased in three directions. This open lever member 23
A pressing portion 52 formed at a position facing the receiving portion 43 of the pawl member 22, and a pin-shaped engaging portion 53 composed of a convex portion slidingly contacting a cam surface 63 of the holding lever member 24 described later.
Is provided.

At one end 55 of the open lever member 23,
The cable 57 of the opener device 56 is connected. The other end of the cable 57 is connected to the vehicle body 11 as illustrated in FIG.
The cable 57 can be pulled by an operator's door opening operation force. When the cable 57 is pulled, the pressing portion 52 of the open lever member 23 engages with the receiving portion 43 of the pawl member 22 and the receiving portion 43 is pushed in the anti-F2 direction. The member 22 is rotated to a position (open position) for moving the member 22 to the disengagement position (FIG. 4).

The holding lever member 24 is rotatable about a shaft 60.
Biased in the direction. The holding lever member 24 is provided with a first arm 62 that can be engaged with the driving portion 35 of the latch member 21.
And a second arm 64 engageable with the engaging portion 53 of the open lever member 23. A cam surface 63 is formed on the second arm 64.

At the distal end of the second arm 64, a stopper portion 65 facing the engaging portion 53 of the open lever member 23 when the open lever member 23 rotates to the open position (FIG. 3), and a stopper portion 65 Is formed. As shown in FIG. 4, when the engaging portion 53 of the open lever member 23 contacts the stopper portion 65, the open lever member 23 is held at the open position.

In this holding state, when the latch member 21 rotates to the side of the disengagement position (FIG. 5) from the second engagement position (FIG. 2), the driving portion 35 of the latch member 21 is moved to the first position.
When the holding lever member 24 rotates in the anti-F4 direction by abutting on the arm 62, as shown in FIG.
The holding state between the engaging portion 5 and the engaging portion 53 is released.

The detection switch 25 has a contact 71 which can come into contact with a part 70 of the open lever member 23. When the open lever member 23 is in the non-open position (FIGS. 1 and 5), it is turned off. The switch is turned on when the open lever member 23 moves to the open position (FIGS. 3 and 4). When the detection switch 25 is turned on, an indicator lamp provided on an instrument panel or the like at the driver's seat is turned on, so that a driver or the like can be notified of the open position.

Next, the operation of the above-configured latch device 15 will be described. As shown in FIG.
4 enters the guide groove 26 to the fully closed position, and when the cable 57 of the opener device 56 is not pulled, the door 1
2 is in a locked state. In this locked state, the striker 14 is engaged with the engagement concave portion 32 of the latch member 21 and the contact portion 42 of the pawl member 22 is in contact with the full latch engagement portion 33 of the latch member 21. 21 is prevented from rotating in the mesh release direction (the direction indicated by arrow F1). The open lever member 23 is held in a non-open position, that is, a position where the pressing portion 52 is separated from the receiving portion 43 of the pawl member 22 by the repulsive force of the open lever spring 51. The open lever member 2 is provided on the cam surface 63 of the holding lever member 24.
3 are in contact with each other. The detection switch 25 is off.

In the locked state shown in FIG. 1, if any impact is applied to the latch device 15 or the like, the pawl member 22 is independently rotated in the anti-F2 direction, and the contact portion 42 of the pawl member 22 is fully latched. It is assumed that it comes off from the locking portion 33.
At this time, even if the latch member 21 rotates in the F1 direction, the abutting portion 42 of the pawl member 22 abuts on the half-latch locking portion 34 as shown in FIG. Thus, the latch member 21 is prevented from rotating to the disengagement position.

In the locked state shown in FIG. 1, when the door opening operation is performed by pulling the cable 57 of the opener device 56, as shown in FIG.
And the pressing portion 52 is moved to the receiving portion 4 of the pole member 22.
Press 3. This causes the pawl member 22 to rotate in the anti-F2 direction.
Deviate from 3. At this time, the engaging portion 53 of the open lever member 23 moves from the stopper portion 65 toward the extending portion 66 while sliding on the cam surface 63. The detection switch 25 is turned on.

When the door opening operation is performed, the external force for pushing up the door body 12, for example, the elasticity of a weather strip provided between the vehicle body 11 and the door body 12 or the door opening assist spring or the like, causes the door body 1 to have an elastic force.
Acting on 2, the striker 14 moves in the door opening direction along the guide groove 26, and the latch member 21 rotates in the direction of the arrow F1 to be in the mesh release position as shown in FIG. However, if the force for pushing up the door body 12 is insufficient for some reason, as shown in FIG.
The latch member 21 remains at the first meshing position or the second meshing position while the latch member 21 remains in the guide groove 26.

In the case of the latch device 15 of this embodiment, when the open lever member 23 is in the open position as shown in FIG. 3, the engaging portion 53 moves to the extending portion 66 side of the holding lever member 24. ing. Therefore, when the opening operation force of the cable 57 is released, the engaging portion 53 of the open lever member 23 comes into contact with the stopper portion 65 of the holding lever member 24 as shown in FIG. It remains in the open position. Therefore, the pawl member 22 is held at the disengaged position. For this reason, the half-latch locking portion 34 when the latch member 21 rotates.
Of the pole member 22 on the movement locus M (radius: r2) of the tip of
Does not exist. The detection switch 25 remains on.

When the door body 12 is forcibly moved in the door opening direction from the state of FIG. 4, the striker 14 moves in the door opening direction along the guide groove 26 as shown in FIG. By rotating in the direction of arrow F1, the door body 12 can be fully opened. With this door opening operation, the driving portion 35 of the latch member 21 pushes the first arm 62 of the holding lever member 24 in the anti-F4 direction, so that the stopper portion 65 of the holding lever member 24 comes off the engagement portion 53, The open lever member 23 rotates in the direction of arrow F3 by the elastic force of the spring 51. For this reason, the pole member 22 rotates in the direction of the arrow F2 due to the elastic force of the spring 41,
It comes into contact with the peripheral surface of the latch member 21. The detection switch 25 is turned off.

When the opened door body 12 is closed, the striker 14 enters the guide groove 26, and the striker 14
Are engaged with the engagement concave portion 32 of the latch member 21. Then, the latch member 21 rotates in the anti-F1 direction until the contact portion 42 of the pawl member 22 engages with the full-latch locking portion 33, thereby returning to the locked state shown in FIG.

In practicing the present invention, each element constituting the present invention, such as a latch member and a striker, as well as a pawl member, an open lever member, and a holding lever member, is not departed from the gist of the present invention. It goes without saying that the present invention can be implemented with various modifications.

In this embodiment, the opener 5
6 is provided in the vehicle and operated from the vehicle,
The key cylinder device provided on the door body 12 and the open lever member 23 are connected by a cable member, a rod member, or the like,
The open lever member 23 may be configured to operate when an operator operates the key cylinder device to open the door from outside the vehicle. Further, an actuator that is operated by operating a keyless entry switch that remotely controls locking and unlocking of a vehicle door and an open lever member 23 are connected with a cable member, a rod member, or the like, and the actuator is operated by an operator's remote operation. The open lever member 23 may be configured to operate. In short, any type of opener device may be used as long as the door opening operation of the operator is transmitted to the open lever member 23.

[0029]

According to the first aspect of the present invention, the latch member and the pawl member can be connected to each other even if the lift amount of the door body is insufficient for some reason when the operator opens the opener device. Since the latch state can be avoided, the door can be opened only by operating the opener device once.

Even when the door is in the closed state and the pawl member and the latch member are disengaged for some reason, the holding lever member does not restrict the operation of the pawl member at all. It is possible to prevent the door from suddenly opening.

[Brief description of the drawings]

FIG. 1 is a front view of a vehicle latch device according to an embodiment of the present invention.

FIG. 2 is a front view of the latch device shown in FIG. 1, in which a latch member and a pawl member are engaged at a half-latch position.

FIG. 3 is a front view showing a state where an open lever member of the latch device shown in FIG. 1 has moved to an open position;

FIG. 4 is a front view of the latch device shown in FIG. 1 in a state where an open lever member and a holding lever member are engaged;

FIG. 5 is a front view of a state in which the striker and the latch member have been moved to a disengaged position from the state shown in FIG. 4;

FIG. 6 is a side view of a part of an automobile provided with the latch device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Vehicle body 12 ... Door body 14 ... Striker 15 ... Latch device 21 ... Latch member 22 ... Pole member 23 ... Open lever member 24 ... Holding lever member 56 ... Opener device

 ────────────────────────────────────────────────── ─── Continued on front page (72) Inventor Hiroki Uehara 2-64 Nakade-cho, Atsuta-ku, Nagoya-shi, Aichi F-term (reference) 2E250 AA21 HH01 JJ21 LL05 PP04 PP05 QQ03

Claims (1)

[Claims] A first member attached to one of a vehicle body and a door body;
A vehicle latch device that holds the door body in a closed state by meshing with a striker provided on one of the other sides, wherein the first meshing position meshes with the striker in a fully closed state of the door body and the striker. And a second meshing position for meshing with the door body in a semi-closed state and a meshing canceling position for canceling meshing with the striker. The second meshing position is shifted from the first meshing position to the second meshing position. A latch member biased to the meshing release position via the latch member, a full latch position for holding the latch member at the first meshing position, a half latch position for holding the latch member at the second meshing position, and the latch member. A pole member movable to an engagement release position allowing rotation to the engagement release position, and a pole member provided so as to be engageable with the pole member; An open lever member that pivots to an open position to move the pawl member to the disengagement position when a door opening operation force is transmitted from the opener device that operates, engages the open lever member and the latch member When the open lever member is rotated to the open position, the open lever member is engaged with the open lever member to hold the open lever member at the open position. A holding lever member provided so as to engage with the latch member and release the holding state when rotated to the side of the meshing release position from the meshing position. Vehicle latch device.