JPH076315B2 - 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 Patent Application No. 62-215133 (Japanese Patent Application Laid-Open No. 64-21533) corresponding to the prior application of the present application.
No. 58783), a back door of a van-type automobile is formed by an upper glass door and a lower metal door, and a right locking device and a left locking device that engage with the left and right strikers on the vehicle body are provided on both left and right sides of the lower metal door. A lock device is provided, and the lower metal door has a latch that engages with the striker of the upper glass door to rotate, and a ratchet that engages with a full-latch engagement step of the latch to prevent the latch from being reversed. In the case where the lock device is provided, the lower metal door is provided with a detection device capable of detecting the degree of opening and closing of the upper glass door, and when the upper glass door is opened, the lower metal door may be opened. It describes the technology that prevented opening. In the prior application, the upper glass door is closed even if either of the left and right locking devices is incompletely locked.

(Problems to be Solved by the Invention) However, the prior application is provided with a detection device capable of detecting the degree of opening / closing of the upper glass door when the upper glass door is opened / closed on the lower metal door side. Since it is detected by adjusting the tightness of the upper glass door, it is not a latch that directly determines opening and closing, but there is a problem of indirect detection. In addition, the device for detecting the degree of tightness of the upper glass door has a complicated structure, requires cost, is difficult to position, and has a problem of accuracy. Further, in the above-mentioned prior application, the upper glass door may be closed even if one of the left and right locking devices is incompletely locked, so that it may be armored as a half door.

(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 and right strikers 60, 61
A right lock device 10 and a left lock device 11 which are respectively engaged with the lower metal door 4 are engaged with the striker 8 of the upper glass door 3 and the latch 12 which is normally rotated are engaged with the latch 12. The lock device 9 having a ratchet 13 for preventing the latch 12 from rotating in the reverse direction is provided. When the lower metal door 4 is opened, the left and right lock devices 10, 11 and the strikers 60, 61 are separated from each other. When the door opening handle 5 capable of releasing the engagement and the unlocking operation are performed, the ratchet 13 is latched.
An unlocking button 6 which can be detached from 12 is attached, and a shaft 31 is provided between the door opening handle 5 and the left and right locking devices 10 and 11.
The radial non-idle groove 42 and the non-idle groove 42 which are axially attached to the
The open lever 32 with the idle groove 41 provided on the front side of the left ratchet lever 33 with the long groove 43 overlapping the non-idle groove 42 and the escape groove 44 provided on the base side of the long groove 43 and the non-empty groove The long groove 55 that overlaps with the swing groove 42 and the right ratchet lever 34 having the escape groove 56 provided on the base side of the long groove 55 are provided, and the non-idle swing groove 42, the long groove 43, and the long groove 55 or the empty groove A pin 28 that is switchably inserted into any one of the swing groove 41, the escape groove 44, and the escape groove 56 is provided, and when the upper glass door 3 is closed and the latch 12 is normally rotated, the outer periphery of the latch 12 is rotated. Surface cam part
The pin 28 is brought into contact with the 12c to move the pin 28 into the idle groove 41 and the escape groove 44.
When the latch 12 is reversely rotated by moving the unlock button 6 toward the escape groove 56 and unlocking the unlock button 6, the cam portion 12c is rotated.
A lock lever 20 is provided that can move the pin 28 further toward the non-idle vibration groove 42, the long groove 43, and the long groove 55.
When the latch 12 is normally rotated, the door opening handle 5
Although the door cannot be opened even if the door is opened, the back door lock device of the van type automobile is capable of opening the door by the door handle 5 when the latch 12 is reversed.

(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. A striker 8 is fixed to the lower edge of the upper glass door 3 at an intermediate position on the left and right.

FIG. 2 is a layout of the lower metal door 4 side, 9 is a locking device with which the striker 8 is engaged, 10 is a right locking device that locks the lower metal door 4 to the vehicle body side, and 11 is a left locking device. .

As shown in FIG. 4, the striker 8 is attached to the locking device 9.
A latch 12 which is engaged with and is rotated counterclockwise, and a ratchet 13 which is engaged with a full-latch engagement step portion 12b of the latch 12 by a pawl 13a and prevents reverse rotation are pivotally mounted by shafts 14 and 15. In addition,
Reference numeral 12a is an engagement step portion in an open state.

The ratchet 13 is axially fixed by a shaft 15 at an upper and lower intermediate position, and a bent piece 16 is formed on the other side of the pawl 13a of the ratchet 13. A ratchet lever 17 is provided in the vicinity of the bent piece 16 and the ratchet lever is provided on the bent piece 16. The ratchet lever 17 is rotated when the ratchet lever 17 is engaged, the rod 19 leading to the unlock button 6 (key cylinder) is connected to the opposite side of the ratchet lever 17 to the unlock button 6, and the unlock button 6 is pushed. Move the ratchet 13
Is rotated to disengage the pawl 13a of the ratchet 13 from the latch 12, and the upper glass door 3 is opened.

An intermediate portion of the lock lever 20 is pivotally mounted by a shaft 21 at a position near the latch 12. A coil spring 22 shown in FIG. 6 is attached to the outer periphery of the shaft 21, and the lock lever 20 is moved to the fourth position.
Rotate to the left in the figure.

One end 23 of the lock lever 20 is closed and the latch 12
Is engaged with the striker 8, it is pressed by the cam portion 12c on the outer periphery of the latch 12 and rotated clockwise (FIG. 7, the lower metal door 4 is not opened in this state). Lock lever 20
A through hole 25 is formed in the other end 24 (FIG. 6) of the through hole 25.
One end of the intermediate link 26 is mounted on the shaft 27 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 lock 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 34 by a shaft 31. (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 matches the non-idle vibration groove 42 of the open lever 32 when the shaft 31 is stopped by the shaft 31, and a relief groove 44 is provided on the shaft 31 side of the long groove 43. Formed,
A fan-shaped window 45 centered on the shaft 31 is formed at a side portion of the escape groove 44.

A stopper 46 of the latch 12 which is locked by the shaft 14 is pivotally mounted on the rear mounting plate 30 (FIG. 6) by a shaft 47. A coil spring 48 is wound around the shaft 47, and the coil spring 48 constantly urges the stopper 46 in a direction away from the latch 12.

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

The right ratchet lever 34 (Fig. 12) extends to both sides from the shaft attachment portion of the shaft 31, the rod 53 reaching the right locking device 10 is attached to the tip of one end 52, and the long groove 43 and the long groove 43 are attached to the other end 54. Long groove that fits
55, a clearance groove 56 that matches the clearance groove 44, and a fan-shaped window 57 that matches the fan-shaped window 45
And are formed respectively.

The pin 28 is inserted into the long groove 43, the escape groove 44, the long groove 55, and the escape groove 56, and the upright piece 49 is inserted into the fan-shaped window 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 right and left locking devices 10 and 11, and 62
Is a latch, 63 is a 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 striker 8 of the upper glass door 3 engages with the latch 12 of the locking device 9 at the center of the lower metal door 4 to rotate the latch 12 in the direction a in FIG.
The claw 13a of the ratchet 13 is engaged with 12b to prevent the reverse rotation of the latch 12, and the cam portion 12c on the outer periphery of the latch 12 presses one end 23 of the lock lever 20 to rotate it to the right c, thereby rotating the lock lever 20. The intermediate link 26 provided at the other end 24 is moved downward, and the pin 28 on the tip end side (lower part) of the intermediate link 26 is moved downward to face the idle 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,
28 is an idling because it faces the idling groove 41, and therefore the right ratchet lever 34 and the left ratchet lever 33 are
None of them rotate 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. 4 could not be opened, but if the key is inserted into the unlock button 6 to unlock it, and then the unlock button 6 is pushed in, the door can be opened. That is, when the unlock button 6 is pressed after unlocking,
In FIG. 3, the protrusion 58 protrudes to rotate the turning lever 59 to the left e, and the left rotation e of the turning lever 59 pulls the rod 19.
The ratchet lever 17 in the figure is rotated counterclockwise. Then, since the bent piece 16 of the ratchet 13 is pushed by the claw 18 of the ratchet lever 17, the ratchet 13 rotates right about the shaft 15 and the claw 13a of the ratchet 13 is disengaged from the full-latch engagement step 12b of the latch 12. Therefore, the latch 12 becomes free, the engagement with the striker 8 is released, and the upper glass door 3 can be opened.

Further, in the case of FIG. 7, the cam portion 12c on the outer peripheral surface of the latch 12
Since the tip end 23 of the lock lever 20 is in contact with the lock lever 20 and therefore the lock lever 20 is rotating clockwise about the shaft 21, the intermediate link 26 is lowered, and the pin 28 of the intermediate link 26 is at the lowermost end of the idle vibration. Since it is located at the position facing the groove 41, the door could not be opened even if the door opening handle 5 was opened. However, in FIG. 8, the latch 12 is rotated to the door opening position.
The tip 23 of 20 and the cam portion 12c of the latch 12 are separated from each other, and the lock lever 20 is acted upon by the spring action of the coil spring 22 (FIG. 6).
In the left direction, the intermediate link 26 is moved upward, and the pin 28 of the intermediate link 26 is moved to the uppermost portion 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 for the right ratchet lever 34.
55 and the long groove 43 of the left ratchet lever 33 (Fig. 6, 11
(FIG. 12, FIG. 12) are also engaged, so that the right ratchet lever 34 and the left ratchet lever 33 rotate together with the movement of the pin 28.

Then, the right ratchet lever 34 pulls the rod 53 to rotate the ratchet 63 of the right lock device 10, disengages the ratchet 63 and the latch 62, and similarly, the left ratchet lever 33 pulls the rod 50 to the right. The ratchet 63 of the lock device 11 can be rotated to disengage the ratchet 63 from the latch 62, and the right striker 60 and the left striker 61 can be disengaged to open the lower metal door 4.

When the left ratchet lever 33 and the right ratchet lever 34 rotate as described above, the fan-shaped window 45 and the fan-shaped window 57 formed in the ratchet lever 33 also rotate. Since the upright pieces 49 of the stopper 46 are engaged with the fan-shaped window 45 and the fan-shaped window 57, the stopper 46 is rotated right about the shaft 47, and the tip of the stopper 46 is latched.
It contacts the cam portion 12c of 12 and the latch 12 cannot rotate counterclockwise.

This is the upper glass door 3 when the lower metal door 4 is opened.
Even when the lower glass door 3 is lowered, the striker 8 does not engage with the latch 12 and prevents the upper glass door 3 from being closed while the lower metal door 4 remains open. This action will be described with reference to FIG.

(Explanation of FIG. 10) FIG. 10 is a state diagram when the striker 8 and the latch 12 cannot engage with each other unless the right locking device 10 and the left locking device 11 are completely locked. The closing of the upper glass door 3 is different from the closing of the trunk. In the case of a trunk, the door is closed against a sturdy vehicle body, so it will not be damaged even if the door is fully closed.

However, in the case of the van type, since the upper glass door 3 is closed against the unstable lower metal door 4, the lower metal door 4 is slightly unstable, for example, only one is locked and the other is unlocked. If there is, closing the door may cause an accident or damage.

The left ratchet lever 33 and the right ratchet lever 34 of the embodiment of the present invention are not one but separate components because of this measure. When one is locked and the other is not locked, that is, As shown in Fig. 10, the right ratchet lever 34 is tilted, and the left ratchet lever 33 is tilted.
Even when the vertical direction is set, the fan-shaped window 57 of the ratchet lever 34 for the right acts and the stopper 46 engages the cam portion 12 of the latch 12.
The striker 8 is prevented from engaging with the latch 12 by contacting with the latch 12.

(Effect) In the prior application, the detection device is provided on the lower metal door side to detect the degree of opening / closing of the upper glass door. Therefore, the detection is made by adjusting the tightness of the upper glass door. However, there is a problem of indirect detection because it is not detected by a latch that directly determines opening and closing. Moreover,
The device for detecting the degree of tightness of the upper glass door has a complicated structure, requires cost, is difficult to position, and has a problem of accuracy. Further, in the above-mentioned prior application, the upper glass door may be closed even if one of the left and right locking devices is incompletely locked, so that it may be armored as a half door.

However, 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 the strikers 60 on the left and right sides of the vehicle body.
61 is provided with a right lock device 10 and a left lock device 11 respectively engaged with the lower metal door 4, and the lower metal door 4 is engaged with the striker 8 of the upper glass door 3 and is rotated in the forward direction. Then, in the case where the lock device 9 having the ratchet 13 for preventing the reverse rotation of the latch 12 is provided, when the lower metal door 4 is operated to open the door, the left and right lock devices 10 and 11 and the strikers 60 and 61 are connected. Between the door opening handle 5 and the left and right locking devices 10 and 11 are attached with the door opening handle 5 capable of releasing the engagement with and the unlocking button 6 capable of releasing the ratchet 13 from the latch 12 when the door is unlocked. On the axis
Radial non-idle groove 42 and the non-idle groove axially mounted on 31
An open lever 32 having an idle groove 41 provided on the front side of 42 and a long groove 43 overlapping the non-idle groove 42, and a left ratchet lever 33 having an escape groove 44 provided at the base side of the long groove 43 and the Providing a right ratchet lever 34 having a long groove 55 which overlaps with the idle groove 42 and a relief groove 56 provided at the base side of the long groove 55, the non-idle groove 42, the long groove 43 and the long groove 55 or the Empty swing groove 41
And a pin 28 that is switchably inserted into one of the escape groove 44 and the escape groove 56 is provided, and when the upper glass door 3 is closed and the latch 12 is normally rotated, the cam portion on the outer peripheral surface of the latch 12 is provided.
The pin 28 is brought into contact with the 12c to move the pin 28 into the idle groove 41 and the escape groove 44.
When the latch 12 is reversely rotated by moving the unlock button 6 toward the escape groove 56 and unlocking the unlock button 6, the cam portion 12c is rotated.
A lock lever 20 is provided that can move the pin 28 further toward the non-idle vibration groove 42, the long groove 43, and the long groove 55.
When the latch 12 is normally rotated, the door opening handle 5
The door cannot be opened even if the door is opened, but when the latch 12 is reversed, it is a back door lock device for a van type vehicle that can be opened by the door handle 4. (A) The lower metal door 4 has the door handle 5 that can disengage the left and right locking devices 10 and 11 and the strikers 60 and 61 when the door is opened, and the ratchet 13 that is unlocked. Since the unlocking button 6 which can be detached from the latch 12 is attached, the lower metal door 4 can be operated by operating the door opening handle 5.
The upper glass door 3 can be opened by operating the unlock button 6.

(B) Between the door opening handle 5 and the left and right locking devices 10 and 11, there is a radial non-idle vibration groove 42 axially attached to the shaft 31 and an idling vibration provided on the front side of the non-idle vibration groove 42. An open lever 32 having a groove 41 and a long groove 43 overlapping the non-idle vibration groove 42 and the long groove 43.
Left ratchet lever 33 with escape groove 44 provided on the base side of
And a right ratchet lever 34 having a long groove 55 that overlaps with the non-idle vibration groove 42 and a relief groove 56 provided on the base side of the long groove 55, and the non-idle vibration groove 42, the long groove 43, and the long groove 55. Alternatively, since the pin 28 that is switched and inserted into any one of the idling groove 41, the escape groove 44, and the escape groove 56 is provided, only by switching the pin 28, the opening handle 5 and the left and right locking devices 10 and 11 can be replaced. You can continue your relationship. Further, since the left ratchet lever 33 and the right ratchet lever 34 are separately provided, when either one is incompletely closed, it becomes possible to prevent the upper glass door 3 from being closed as shown in FIG.

C. In the state where the upper glass door 3 is closed and the latch 12 is normally rotated, the pin 28 is contacted with the cam portion 12c on the outer periphery of the latch 12 so that the pin 28 is driven by the idle groove 41, the escape groove 44, and the escape groove 44. Groove 56
When the latch 12 is reversed by moving the unlock button 6 toward the unlocking button 6 and the latch 12 is rotated in the reverse direction, the pin 28 is separated from the cam portion 12c to move the pin 28 into the non-idle vibration groove 42, the long groove 43, and the long groove 55. Since the lock lever 20 that can be moved toward one side is provided, not only the structure is simple, but also the open / closed state can be directly detected by the state of the latch 12, which is accurate.

D. In the state where the latch 12 is normally rotated, the door opening operation is impossible even if the door opening handle 5 is operated.
Since the door opening operation can be performed by the door opening handle 5 when 12 is reversed, the lower metal door 4 is not forcibly opened and damaged when the glass door 3 is in the closing engagement.

[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 locking device, and FIG. 5 is a side view of the locking device. 6 and 6 are exploded views of the locking device, FIG. 7 is an explanatory view of the operation in a closed state, FIG. 8 is an explanatory view of the operation when opening the upper glass door, and FIG. 9 is when opening the lower metal door. FIG. 10 is an operation explanatory view when the right locking device of the lower metal door is not engaged, FIG. 11 is a plan view of the left ratchet lever, and FIG. 12 is a plan view of the right ratchet lever. FIG. 13 is a sectional view of the left and right locking device, 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 …… Strike, 9
...... Locking device, 10 ...... Right locking device, 11 ...... Left locking device, 12 …… Latch, 12a …… Door open state engagement step, 12b…
… Full latch engagement step, 12c… Cam, 13 …… Ratchet, 13a …… Pawl, 14 …… Shaft, 15 …… Shaft, 16 …… Bending piece, 17 …… Ratchet lever, 18 …… Pawl, 19 …… Rod, 20 …… Lock lever, 21 …… Axis, 22 …… Coil spring, 23 …… Tip, 24 …… Other end, 25 …… Through hole, 26 …… Intermediate link, 27 …… Axis, 28 ...... Pin, 29 …… Mounting plate, 30 ……
Mounting plate, 31 ... Shaft, 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 …… Empty groove, 42 …… Non-empty groove, 43 …… Long groove, 44 …… Escape groove, 45 …… Fan-shaped window, 46 ……
Stopper, 47 ... Shaft, 48 ... Coil spring, 49 ... Standing piece, 50 ... Rod, 51 ... Tip, 52 ... One, 53 ... Rod, 54 ... Other, 55 ... Long groove, 56 ... … Escape groove, 57 …… Fan-shaped window, 58 …… Protrusion, 59 …… Rotating lever, 60 …… Right striker, 61 …… Left striker, 63 …… Ratchet, 64 ……
Link.

Front page continued (72) Inventor Yu Mitobe 8 Fujisawa, Kanagawa Prefecture Shelf Shelf Fujisawa Plant (56) References JP 63-138085 (JP, A) JP 64-58783 (JP) , A) JP 51-132535 (JP, A) Actually opened 54-148055 (JP, U) Actually opened 62-166972 (JP, U) Actually opened 60-154558 (JP, U)

Claims (1)

[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.
A right locking device 10 and a left locking device 11 that engage with the left and right strikers 60 and 61 on the vehicle body side are provided on both the left and right sides of the vehicle, and the striker 8 of the upper glass door 3 is provided on the lower metal door 4.
In the structure provided with the lock device 9 having the latch 12 which is engaged with and rotates in the forward direction and the ratchet 13 which is engaged with the latch 12 and prevents the latch 12 from rotating in the reverse direction, the lower metal door 4 is provided with an opening. A door opening handle 5 capable of releasing the engagement between the left and right locking devices 10 and 11 and the strikers 60 and 61 when the door is operated.
And an unlocking button 6 for releasing the ratchet 13 from the latch 12 when unlocked, and a shaft 31 is pivotally mounted between the door opening handle 5 and the left and right locking devices 10 and 11. A radial non-idle groove 42, an open lever 32 having an idling groove 41 provided on the front side of the non-idle groove 42, and a long groove 43 overlapping the non-idle groove 42 and a base portion side of the long groove 43. Left ratchet lever 33 having a relief groove 44 and the non-idle groove
A long groove 55 overlapping with 42 and a relief groove 56 provided on the base side of the long groove 55.
And a right ratchet lever 34 with
42 and the long groove 43 and the long groove 55, or the idling groove 41, the escape groove 44, and the pin to be switched and inserted into the escape groove 56
28, the upper glass door 3 is closed and the latch 12
Is normally rotated, the cam portion 12c on the outer peripheral surface of the latch 12 is
Abutment with the pin 28 to move the pin 28 toward the idle groove 41, the escape groove 44, and the escape groove 56 to unlock the unlock button 6 to reverse the latch 12 and the cam portion. A lock lever 20 that can move the pin 28 away from 12c toward the non-idle vibration groove 42, the long groove 43, and the long groove 55 is provided. A back door lock device for a van-type automobile that can be opened by the door handle 5 when the latch 12 is reversed even though the door cannot be opened even if the door is opened.