JPH0718286B2 - Back-lock device for van type automobile - Google Patents

Description

The present invention relates to a back door lock device for a van type automobile.

(Prior Art) Japanese Utility Model Publication No. 47-31540 discloses a left striker in which a back door of a van type automobile is formed by an upper glass door and a lower metal door, and the left and right sides of the lower metal door are fixed to the vehicle body. A left locking device having a left latch that engages with the left latch and a left ratchet that engages with the left latch to prevent reverse rotation of the left latch, and a right latch and a right latch that engage with a right striker fixed to the vehicle body side. A right locking device having a right ratchet for preventing reverse rotation of the right latch is provided, and the lower metal door is engaged with a main striker fixed to the upper glass door to rotate forward and the main latch. A main locking device having a main ratchet that engages with a latch to prevent the main latch from rotating in the reverse direction is provided, and the lower metal door has a door opening handle and the main door handle that can disengage the left and right ratchets from the left and right latches. Back door lock device van type motor vehicle fitted with a unlocking button capable of releasing the Chet from the main latch is described.

(Problems to be Solved by the Invention) The known back door lock device for a van-type automobile has a structure in which the lower metal door cannot be opened until the upper glass door is opened, but the upper glass door is closed. The structure is always possible. However, even when the lower metal door is incompletely closed, if the upper glass door can be closed, the upper glass door may be held in a distorted position and damaged.

(Object of the invention) It is an object of the present invention to obtain a lock device having a simple structure and which cannot close the upper glass door unless the lower metal door is completely closed.

(Means for Solving the Problems) Therefore, according to the present invention, the back door 2 of the van-type automobile 1 is formed by the upper glass door 3 and the lower metal door 4, and the vehicle body side is provided on both left and right sides of the lower metal door 4. Left striker 61 fixed to
A left locking device 11 having a left latch 62 that engages with the left latch 62 and a left ratchet 63 that engages with the left latch 62 and prevents the left latch 62 from rotating in the reverse direction, and a right engages with the right striker 60 fixed to the vehicle body side. Latch 62 and the right latch 62 engaging the right latch
A right lock device 10 having a right ratchet 63 for preventing the reverse rotation of 62 is provided, and the lower metal door 4 is engaged with a main striker 8 fixed to the upper glass door 3 and a main latch 12 for normal rotation is provided. A main locking device 9 having a main ratchet 13 which engages with the main latch 12 to prevent the main latch 12 from rotating in the reverse direction is provided, and the left and right ratchets 63, 63 are provided on the lower metal door 4 and the left and right latches 62, 62. Door handle 5 that can be detached from
And an unlocking button 6 for detaching the main ratchet 13 from the main latch 12, at least one of the left and right latches 62, 62 is attached to the left and right strikers 61, 60 in the main locking device 9. When not engaged, the main latch 12 and the main striker 8 are interlocked with this.
This is a back door lock device for a van type automobile provided with a stopper 46 that is displaced to a door-closing refusal position that makes it impossible to engage with.

Further, according to the present invention, the back door 2 of the van-type automobile 1 is formed by the upper glass door 3 and the lower metal door 4, and left and right sides of the lower metal door 4 are engaged with the left striker 61 fixed to the vehicle body side. A left locking device 11 having a left latch 62 and a left ratchet 63 that engages with the left latch 62 and prevents the left latch 62 from rotating in the reverse direction, and a right latch 62 that engages with a right striker 60 fixed to the vehicle body. Engaging the right latch 62
A right lock device 10 having a right ratchet 63 for preventing reverse rotation of the upper glass door 3 is provided on the lower metal door 4.
Main latch that rotates forward by engaging with the main striker 8 fixed to
A main locking device 9 having a main ratchet 13 for engaging the main latch 12 and preventing the main latch 12 from rotating in the reverse direction is provided.
The lower metal door 4 is provided with an opening door handle 5 capable of disengaging the left and right ratchets 63, 63 from the left and right latches 62, 62 and an unlocking button 6 capable of disengaging the main ratchet 13 from the main latch 12. In the main locking device 9, when the door opening handle 5 is operated to open, the left ratchet 63 is disengaged from the left latch 62 and is rotated to the open position.
Is left from the left latch 62, the left ratchet lever 33 stays in the door open position, and the door open handle 5 rotates to the door open position. When the door ratchet lever 33 rotates to the door open position, the right ratchet Engagement of the right ratchet lever 34, which remains in the open position while the right ratchet 63 is disengaged from the right latch 62, and the right ratchet 63 is disengaged from the right latch 62, with the main latch 12 and the main striker 8. Is provided with a stopper 46 that can be displaced to a closed door refusal position, and the stopper 46 and the left and right ratchet levers 33, 34 are provided when at least one of the left and right ratchet levers 33, 34 is in the open position. In conjunction with the stopper 46
Is a back door lock device for a van-type vehicle, which is engaged so as to be displaced to the door closing refusal position.

(Embodiment) When one embodiment of the present invention is described with reference to the drawings, 1 is a van type vehicle, 2 is a back door, 3 is an upper glass door of the back door 2, and 4 is a lower metal door of the back door 2.

A door opening device 7 having a door opening handle 5 and an unlocking button 6 is attached to the outside of the middle position between the lower metal door 4 and the left and right. The main striker 8 is fixed to the left and right intermediate positions of the lower edge of the upper glass door 3.

FIG. 2 is a layout of the lower metal door 4 side, 9 is a main locking device with which the main striker 8 engages, and 10 is a lower metal door 4.
A right locking device for locking the vehicle to the vehicle body side, and a left locking device for the same.

As shown in FIG. 4, the main locking device 9 includes a main latch 12 that engages with the main striker 8 and rotates counterclockwise a, and the main latch 12.
A main ratchet 13 for preventing reverse rotation by engaging a claw 13a with a full-latch engagement step portion 12b of 12 is pivotally attached by a shaft 14 and a shaft 15. Note that reference numeral 12a is an opening step engagement step portion.

The main ratchet 13 is axially fixed at an upper and lower intermediate position by a shaft 15, and a bending piece 16 is formed on the other side of the claw 13a of the main ratchet 13, and a ratchet lever 17 is provided in the vicinity of the bending piece 16.
The claw 18 of the ratchet lever 17 is engaged with the bending piece 16, and the rod 19 leading to the unlock button 6 (key cylinder) is connected to the opposite side of the claw 18 of the ratchet lever 17 to connect the unlock button 6 to the unlock button 6.
When is pressed, the ratchet lever 17 is rotated to rotate the main ratchet 13, and the claw 13a of the main ratchet 13 is moved to the main latch 1
The upper glass door 3 is opened by detaching it from 2.

An intermediate portion of the lock lever 20 is pivotally mounted on a shaft 21 at a position near the main latch 12. A coil spring 22 shown in FIG. 6 is attached to the outer periphery of the shaft 21, and the coil spring 22 biases the lock lever 20 in the leftward rotation direction in FIG.

One end 23 of the lock lever 20 is closed and the main latch
When 12 is engaged with the main striker 8, it is pressed by the cam portion 12c on the outer circumference of the main latch 12 to rotate clockwise c (7th).
Figure, lower metal door 4 does not open in this state). A through hole 25 is bored in the other end 24 (FIG. 6) of the lock lever 20, and one end of an intermediate link 26 is mounted on the through hole 25 by a shaft 27. A pin 28 projecting to the opposite side of the shaft 27 is provided on the tip end side of the intermediate link 26.

Reference numeral 29 is a front mounting plate of the main locking device 9, 30 is a rear mounting plate (Fig. 6), and the front mounting plate 29 has an open lever 32, a left ratchet lever 33, and a right ratchet lever by a shaft 31.
34 is axially mounted (Figs. 5 and 6).

The open lever 32 is substantially L-shaped and has one piece 35 (see FIGS. 5 and 6).
In the figure), a bending piece 36 is formed, and the bending piece 36 has a protrusion 38 of a rotating lever 37 which is rotated when the door opening handle 5 is opened.
Engage. 39 is a rod that connects the turning lever 37 and the door opening handle 5.

The other piece 40 of the open lever 32 has an idle groove 41 and a non- idle groove 42.
And with which the pin 28 engages.

The left ratchet lever 33 (Fig. 11) has a long groove 43 that coincides with the non-idle vibration groove 42 of the open lever 32 when stopped by the shaft 31, and a relief groove 44 is provided on the shaft 31 side of the long groove 43. Engagement portions formed around the shaft 31 at intervals on the sides of the escape groove 44.
Forming 45.

A stopper 46 of the main latch 12, which is locked by the shaft 14, is attached to the rear mounting plate 30 (FIG. 6) by a shaft 47. Reference numeral 48 is a coil spring that biases the stopper 46 in the counterclockwise rotation direction so as to come off the latch 12.

The stopper 46 is provided with an engaging piece 49 parallel to the shaft 47, and the engaging piece 49 is loosely fitted in the engaging portion 45. The engaging piece 49 has a smaller width than the engaging portion 45 and can move within the engaging portion 45. At the tip 51 of the left ratchet lever 33, the rod 50 leading to the left locking device 11
Is pivoted (Fig. 3).

The right ratchet lever 34 (Fig. 12) extends from both sides of the shaft 31 to the right and left, and a rod 53 reaching the right locking device 10 is axially attached to the tip of one end 52, and the long groove 43 is attached to the other 54. Long groove 55
A relief groove 56 that matches the relief groove 44, and an engagement portion 57 that matches the engagement portion 45 are formed.

The pin 28 is inserted through the long groove 43, the escape groove 44, the long groove 55, and the escape groove 56, and the engaging piece 49 is inserted through the engaging portion 57.

The unlock button 6 has a protrusion 58 at the tip (Fig. 3),
When the protrusion 58 protrudes, the rotation lever 59 is rotated to move the rod 19
Tow. 60 is the right striker (Fig. 1) and 61 is the left striker.

13 and 14 show the inside of the left and right locking devices 10 and 11, and 62
Is a left and right latch, 63 is a left and right ratchet, and 64 is a link.

(Operation) Next, the operation will be described.

(Explanation of FIG. 7) When the back door 2 is closed, the state is as shown in FIG. That is, the main striker 8 of the upper glass door 3 engages with the main latch 12 of the main locking device 9 at the center of the lower metal door 4 to rotate the main latch 12 in the direction a in FIG. The claw 13a of the main ratchet 13 is engaged with the step portion 12b to prevent the main latch 12 from rotating in the reverse direction, and the cam portion 12c on the outer circumference of the main latch 12 is prevented.
Thus, one end 23 of the lock lever 20 is pressed to rotate right c, and the intermediate link 26 provided at the other end 24 of the lock lever 20 is moved downward, so that the pin 28 on the tip side (lower part) of the intermediate link 26 is moved. To make it face the empty vibration groove 41 of the open lever 32.

In the state shown in FIG. 7, the door opening handle 5 shown in FIG. 2 is operated to open the door, the rotary lever 37 is rotated right d via the rod 39, and the projection 38 of the rotary lever 37 causes the bending piece 36 to move. Even if you push it up and rotate the open lever 32 counterclockwise about the shaft 31,
Since 28 faces the idling groove 41, it is an idling. Therefore, neither the right ratchet lever 34 nor the left ratchet lever 33 rotates, and the lower metal door 4 cannot be opened.

(Explanation of FIG. 8) In FIG. 7, even if the open door handle 5 is operated to open the open lever 32 to the left, the pin 28 faces the idle groove 41, so that the pin 28 is idle and the lower metal door is opened. I could not open 4, but I inserted a key into the unlock button 6 to unlock it,
Then, when the unlock button 6 is pushed in, the door can be opened. That is, when the unlock button 6 is pushed after unlocking, the third
In the figure, the protrusion 58 protrudes to rotate the turning lever 59 leftward, and the left rotation e of the turning lever 59 pulls the rod 19 to rotate the ratchet lever 17 shown in FIG. 8 counterclockwise. Then, since the bent piece 16 of the main ratchet 13 is pushed by the pawl 18 of the ratchet lever 17, the main ratchet 13 rotates right about the shaft 15, and the pawl 13a of the main ratchet 13 has the full-latch engagement step portion of the main latch 12. 12b
Get out of. Therefore, the main latch 12 becomes free, the engagement with the main striker 8 is released, and the upper glass door 3 can be opened.

In the case of FIG. 7, the cam portion 12 on the outer peripheral surface of the main latch 12 is
Since the tip 23 of the lock lever 20 is in contact with c, and therefore the lock lever 20 is rotating clockwise about the shaft 21,
Since the intermediate link 26 is lowered and the pin 28 of the intermediate link 26 is in the position facing the empty vibration groove 41 at the lowermost end, the door could not be opened even if the door opening handle 5 was opened. In the figure,
Since the main latch 12 is rotated to the door open position, the tip 23 of the lock lever 20 and the cam portion 12c of the main latch 12 are separated from each other,
The lock lever 20 is rotated counterclockwise by the spring action of the coil spring 22 (Fig. 6) to move the intermediate link 26 upward,
The pin 28 of the intermediate link 26 is moved to the uppermost part of the non-idle vibration groove 42.

(Explanation of FIG. 9) As shown in FIG. 8, when the upper glass door 3 is opened and then the door opening handle 5 is opened, the lower metal door 4 is opened as shown in FIG. it can. That is, when the door opening handle 5 is operated to open, the rod 39 is pulled to rotate the rotating lever 37 to the right, and the protrusion 38 of the rotating lever 37 pushes the bending piece 36.
The open lever 32 rotates counterclockwise about the shaft 31. At this time, as described above, since the pin 28 has moved to the uppermost portion of the non-idle vibration groove 42, the pin 28 moves to the left due to the engagement with the non-idle vibration groove 42. This pin 28 has a long groove 55 on the right ratchet lever 34.
And the long groove 43 of the left ratchet lever 33 (Fig. 6, Fig. 11,
(Fig. 12) is also engaged, so with the movement of the pin 28,
Both the right ratchet lever 34 and the left ratchet lever 33 rotate counterclockwise and move to the door open position (inclined position).

Then, the right ratchet lever 34 pulls the rod 53 to rotate the right ratchet 63 of the right locking device 10, disengages the right ratchet 63 from the right latch 62, and similarly, the left ratchet lever 33 pulls the rod 50. Rotate the left ratchet 63 of the left locking device 11 to disengage the left ratchet 63 from the left latch 62, which allows the left and right latches 62, 62 to be free and allows the left and right strikers 61, 60 and the left and right latches 62, 62 to be separated. The engagement is released and the lower metal door 4 is opened.

Then, when the left and right ratchets 63, 63 are released from the left and right latches 62, 62 as described above to open the doors, the left and right ratchets 63, 63 are closed until the lower metal door 4 is closed again.
Since 63 contacts the outer circumferences of the left and right latches 62, 62 and is held in the disengaged position, the left and right ratchet levers 33, 34 connected via the rods 50, 53 are also held in the rotated door opening position.
Therefore, the engaging portions 45, 57 of the left and right ratchet levers 33, 34
The stopper 46 engaged with the engaging piece 49 also rotates right about the shaft 47 when the lower metal door 4 is opened, and the tip of the stopper 46 hits the cam portion 12c of the main latch 12. It faces the closing door refusal position where it comes into contact, and thereafter, it hinders the closing rotation (left rotation) of the main latch 12. Therefore, when the lower metal door 4 is opened, even if the upper glass door 3 is closed, the main striker 8 cannot engage with the main latch 12, and the upper glass door 3 cannot be closed.

(Explanation of FIG. 10) FIG. 10 shows a state in which the right locking device 10 of the lower metal door 4 is incompletely closed and the left locking device 11 is completely closed. Thus, when either one is incompletely locked, the lower metal door 4 is held in an unstable inclined state, and if the upper glass door 3 is closed with respect to such a lower metal door 4, an accident or damage will occur. Cause

The reason why the left ratchet lever 33 and the right ratchet lever 34 of the embodiment of the present invention are not separate but as separate parts is because of this measure, and when one is locked and the other is not locked, that is, As shown in Fig. 10, even when the right ratchet lever 34 is in the inclined open position and the left ratchet lever 33 is in the vertical position, the engagement portion 57 acts on the right ratchet lever 34 to latch the stopper 46. The striker 8 cannot engage with the latch 12 because it faces the door-rejecting position where it abuts the cam portion 12.

(Effect) As described above, according to the present invention, the back door 2 of the van-type automobile 1 is formed by the upper glass door 3 and the lower metal door 4, and the left and right sides of the lower metal door 4 are fixed to the vehicle body side. A left locking device 11 having a left latch 62 that engages with the left striker 61 and a left ratchet 63 that engages with the left latch 62 and prevents reverse rotation of the left latch 62, and a right striker fixed to the vehicle body side.
A right locking device 10 having a right latch 62 that engages with the right latch 62 and a right ratchet 63 that engages with the right latch 62 and prevents the right latch 62 from rotating in the reverse direction is provided. A main locking device 9 having a main latch 12 that engages with a main striker 8 fixed to the door 3 and rotates normally, and a main ratchet 13 that engages with the main latch 12 and prevents the main latch 12 from rotating in the reverse direction.
The lower metal door 4 is provided with the left and right ratchets 63,
When the door opening handle 5 capable of disengaging 63 from the left and right latches 62, 62 and the unlock button 6 capable of disengaging the main ratchet 13 from the main latch 12 are attached, the main locking device 9 is provided with the left and right latches. When at least one of the left and right strikers 61, 60 is disengaged from the left and right strikers 61, 60, the main latch 12 and the main striker 8 are interlocked with the left and right strikers 61, 60 and are displaced to a door-closing refusal position. Since this is a back door lock device for a van-type vehicle provided with a stopper 46, the upper glass door 3 cannot be closed unless both the left and right lock devices of the lower metal door 4 are completely closed. As a result, it is possible to prevent accidental accidents and door damage.

Further, according to the present invention, the back door 2 of the van-type automobile 1 is formed by the upper glass door 3 and the lower metal door 4, and left and right sides of the lower metal door 4 are engaged with the left striker 61 fixed to the vehicle body side. A left locking device 11 having a left latch 62 and a left ratchet 63 that engages with the left latch 62 and prevents the left latch 62 from rotating in the reverse direction, and a right latch 62 that engages with a right striker 60 fixed to the vehicle body. Engaging the right latch 62
A right lock device 10 having a right ratchet 63 for preventing reverse rotation of the upper glass door 3 is provided on the lower metal door 4.
Main latch that rotates forward by engaging with the main striker 8 fixed to
A main locking device 9 having a main ratchet 13 for engaging the main latch 12 and preventing the main latch 12 from rotating in the reverse direction is provided.
The lower metal door 4 is provided with an opening door handle 5 capable of disengaging the left and right ratchets 63, 63 from the left and right latches 62, 62 and an unlocking button 6 capable of disengaging the main ratchet 13 from the main latch 12. In the main locking device 9, when the door opening handle 5 is operated to open, the left ratchet 63 is disengaged from the left latch 62 and is rotated to the open position.
Is left from the left latch 62, the left ratchet lever 33 stays in the door open position, and the door open handle 5 rotates to the door open position. When the door ratchet lever 33 rotates to the door open position, the right ratchet Engagement of the right ratchet lever 34, which remains in the open position while the right ratchet 63 is disengaged from the right latch 62, and the right ratchet 63 is disengaged from the right latch 62, with the main latch 12 and the main striker 8. Is provided with a stopper 46 that can be displaced to a closed door refusal position, and the stopper 46 and the left and right ratchet levers 33, 34 are provided when at least one of the left and right ratchet levers 33, 34 is in the open position. In conjunction with the stopper 46
Is a back door lock device of a van type vehicle engaged so as to be displaced to the door closing refusal position,
Left and right ratchet levers for opening the lower metal door 4
Since the stopper 46 is displaced by 33 and 34, it can be implemented with a simple configuration.

[Brief description of drawings]

1 is a perspective view of a back door, FIG. 2 is a layout view of a door opening device, FIG. 3 is a perspective view of a door opening device, FIG. 4 is a plan view of a main locking device, and FIG. 5 is a main locking device. Side view, FIG. 6 is an exploded view of the main locking device, FIG. 7 is an explanatory view of the operation in the closed state,
FIG. 8 is an explanatory view of the operation when opening the upper glass door, FIG. 9 is an explanatory view of the operation when opening the lower metal door, and FIG. 10 is a view when the right locking device of the lower metal door is not engaged. 11 is a plan view of the left ratchet lever, FIG.
The drawing is a plan view of the right ratchet lever, FIG. 13 is a cross-sectional view of the left and right locking devices, and FIG. 14 is a side view of the same. Explanation of symbols 1 …… Van type car, 2 …… Back door, 3 …… Upper glass door, 4 …… Lower metal door, 5 …… Opening handle, 6…
… Unlock button, 7 …… Opening device, 8 …… Main striker,
9 ... Main locking device, 10 ... Right locking device, 11 ... Left locking device, 12 ... Main latch, 12a ... Door open state engagement step, 12b ... Full latch engagement step, 12c. Cam part, 13 ...
… Main ratchet, 13a …… Claws, 14 …… Axis, 15 …… Axis, 16
…… Bending piece, 17 …… Ratchet lever, 18 …… Pawl, 19…
… Rod, 20 …… Lock lever, 21 …… Shaft, 22 …… Coil spring, 23 …… Tip, 24 …… End, 25 …… Through hole, 26 ……
Intermediate link, 27 …… Axis, 28 …… Pin, 29 …… Mounting plate, 30
...... Mounting plate, 31 …… Axis, 32 …… Open lever, 33 ……
Left ratchet lever, 34 ... Right ratchet lever, 35 ...
… One piece, 36 …… Bending piece, 37 …… Rotating lever, 38 …… Pawl,
39 …… Rod, 40 …… Other piece, 41 …… Illustration groove, 42 …… Non-idulation groove, 43 …… Long groove, 44 …… Escape groove, 45 …… Engagement part, 46 ……
Stopper, 47 ... Shaft, 48 ... Coil spring, 49 ... Standing piece, 50 ... Rod, 51 ... Tip, 52 ... One side, 53 ... Rod, 54 ... Other side, 55 ... Long groove, 56 ... … Escape groove, 57 …… Engagement part, 58 …… Projection, 59 …… Rotating lever, 60 …… Right striker, 61 …… Left striker, 62 …… Left and right latch, 63…
… Right and left ratchets, 64 …… links.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Isamu Mitobe, No. 8 Tsutana, Fujisawa City, Kanagawa Prefecture Isuzu Motors Ltd., Fujisawa Plant (56) References JP 64-58783 (JP, A) JP 64-64 17982 (JP, A)

Claims (2)

[Claims] 1. A back door 2 of a van type automobile 1 is formed by an upper glass door 3 and a lower metal door 4, and the lower metal door 4 is formed.
On both left and right sides of the left latch 62 engaged with the left striker 61 fixed to the vehicle body and the left latch 62 engaged with the left latch 62.
The left locking device 11 having a left ratchet 63 for preventing the reverse rotation of the right latch 62 and the right latch 62 engaged with the right striker 60 fixed to the vehicle body, and the right latch 62 are engaged to prevent the right latch 62 from reverse rotation. Right locking device 10 with right ratchet 63
The lower metal door 4 is provided with a main latch 12 that engages with a main striker 8 fixed to the upper glass door 3 and rotates forward, and engages with the main latch 12 to prevent reverse rotation of the main latch 12. A main locking device 9 having a main ratchet 13 is provided, and the lower metal door 4 is provided with the main door ratchet 13 and the open door handle 5 that can disengage the left and right ratchets 63, 63 from the left and right latches 62, 62. In the case where the unlocking button 6 which can be disengaged from the latch 12 is attached, when the at least one of the left and right latches 62, 62 is not engaged with the left and right strikers 61, 60, the main lock device 9 is unlocked. A back door lock device for a van-type automobile, which is provided with a stopper 46 which is interlocked with the main latch 12 and disengages from the main striker 8 to a closed door refusal position. 2. A back door 2 of a van type automobile 1 is formed by an upper glass door 3 and a lower metal door 4, and the lower metal door 4 is formed.
On both left and right sides of the left latch 62 engaged with the left striker 61 fixed to the vehicle body and the left latch 62 engaged with the left latch 62.
The left locking device 11 having a left ratchet 63 for preventing the reverse rotation of the right latch 62 and the right latch 62 engaged with the right striker 60 fixed to the vehicle body, and the right latch 62 are engaged to prevent the right latch 62 from reverse rotation. Right locking device 10 with right ratchet 63
The lower metal door 4 is provided with a main latch 12 that engages with a main striker 8 fixed to the upper glass door 3 and rotates forward, and engages with the main latch 12 to prevent reverse rotation of the main latch 12. A main locking device 9 having a main ratchet 13 is provided, and the lower metal door 4 is provided with the main door ratchet 13 and the open door handle 5 that can disengage the left and right ratchets 63, 63 from the left and right latches 62, 62. In the case where the unlock button 6 that can be disengaged from the latch 12 is attached, the main locking device 9 is rotated to the open position by the opening operation of the open handle 5 and is rotated to the open position to cause the left ratchet to move. 63
Is released from the left latch 62, and the left ratchet 63 remains in the door open position while the left ratchet 63 is released from the left latch 62. When rotating to the door opening position, the right ratchet 63 is disengaged from the right latch 62, and the right ratchet 63 remains in the door opening position while the right ratchet 63 is disengaged from the right latch 62, and A stopper 46 that can displace the main latch 12 and the main striker 8 to disengage the door closing refusal position is provided, and the stopper 46 and the left and right ratchet levers 33 and 34 are the same as those of the left and right ratchet levers 33 and 34. A back door lock device for a van-type vehicle, wherein at least one of the doors is engaged so that the stopper 46 is displaced to the door-closing refusal position in conjunction with the door-opening position.