JP2022143814A - Vehicle door assembling device and assembling method - Google Patents

Abstract

To improve an assembling property when a vehicle door in a state that an opening portion of a vehicle body is opened is assembled to the vehicle body.SOLUTION: An assembling device for assembling a door opening/closing an opening portion of a vehicle body to the vehicle through a hinge, includes a material handling jig that holds the door, and a working robot that supports the material handling jig to carry the door to the opening portion of the vehicle body. The material handling jig is equipped with a trestle, a door holder that holds the door, and a slide rail that is provided on the trestle and guides the movement of the door holder when positioning the door to the vehicle body. The material handling jig is further equipped with a mechanism that slides the door holder on the slide rail when positioning the door with respect to the vehicle body.SELECTED DRAWING: Figure 4

Description

The present invention relates to assembly of vehicle doors.

Patent Literature 1 describes a method of attaching a door to a vehicle body when the door is attached to the vehicle body by a hinge. In this document, two upper and lower hinges are fixed to the vehicle body, and of the two upper and lower screw holes of the door and the upper hinge, the upper screw hole is used as a reference hole, and the door is tilted to be erected on the vehicle body. stated to be attached.

JP 2010-208526 A

By the way, in cases where the door is held from the inner side by a material handling (material hand) jig and assembled into the vehicle body with the door open, an overhang force acts on the material handling jig and hinders smooth assembly. There is a problem of coming That is, it is as follows.

In order to absorb variations in vehicle body position and position the door with respect to the vehicle body, it is preferable that the material handling jig slidably support a door holder that holds the door on a frame by a slide rail. This means that the door holder (door) is positioned on the vehicle body while being slid on the frame.

On the other hand, in the case of a door that opens and closes with a hinge, when the vehicle body opening is closed, it is normally tilted toward the inner side. The held door assumes a posture inclined toward the outer side. As a result, an overhanging force (moment load) is applied from the door to the slide rail of the material handling jig, and sliding on the slide rail is not smooth. As a result, the positionability of the door holder (door) with respect to the vehicle body deteriorates, and there is concern that assembly failure or damage to the material handling jig, the door, and the like may occur.

In particular, from the viewpoint of miniaturization and weight reduction of material handling jigs, and eventually miniaturization and weight reduction of robots that support material handling jigs, the height of the material handling jig base is lower than the door holder and the position of the slide rail is adjusted. When it is lowered, the slidability of the slide rail is significantly deteriorated due to the overhang force.

The above problem of degraded slidability of the slide rail is that even when the door is held from the outer side and assembled to the vehicle body in the closed position, the door tilts toward the inner side in the closed position, creating an overhang force from the door. Since it acts on the slide rail, it will also occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to solve the problem of deterioration of slide rail slidability due to the above-mentioned overhang force generated when assembling a vehicle door, and to improve the slidability of the slide rail. It is intended to improve the attachability.

As a result of various experiments, the present invention discovered that even if a relatively large overhang force is applied to the slide rail under certain conditions, the door holder moves the slide rail smoothly. I found that it slides to. This is the case where the door holder is forcibly slid on the slide rail in advance. In other words, the reason why the door holder does not slide smoothly on the slide rail when the door is positioned on the vehicle body is that the slide rail continues to have an overhang force, and the sliding surfaces of the two become fixed to each other. is the case. If the door holder is forcibly slid to release the fixed state, the door holder slides relatively smoothly on the slide rail when the door is positioned on the vehicle body.

Therefore, according to the present invention, when the door is positioned with respect to the vehicle body, the door holder is forcibly slid on the slide rail in advance.

A vehicle door assembly apparatus disclosed herein is an apparatus for attaching a door to a vehicle body for opening and closing an opening of a vehicle body via a hinge, and includes a material handling jig for holding the door and a material handling jig for supporting the door. and a work robot for transporting the door to an opening of the vehicle body, wherein the material handling jig comprises a frame, a door holder for holding the door, and a frame provided on the frame for positioning the door on the vehicle body. a slide rail for guiding the movement of the door holder; and a mechanism for sliding the door holder on the slide rail before positioning the door with respect to the vehicle body.

Further, the method for assembling a vehicle door disclosed herein is a method for assembling a door that opens and closes an opening of a vehicle body via a hinge to the vehicle body using a material handling jig, wherein the material handling jig is a frame, a door holder for holding the door, and a slide rail provided on the frame for guiding the movement of the door holder when positioning the door on the vehicle body, and holding the door on the door holder. a step of moving the mount to position the door so that it assumes a mounting posture with respect to the vehicle body; a step of positioning the door with respect to the vehicle body while sliding the door holder on the slide rail; and connecting the door to the vehicle body by the hinge. Further, before the step of positioning the door to the vehicle body, the door holder is fixed to the vehicle body. It is characterized by comprising a step of sliding on a slide rail.

According to each of this assembly device and assembly method, the door holder slides on the slide rail in advance when positioning the door with respect to the vehicle body. As a result, even if an overhang force is applied to the slide rail from the door and the door holder is fixed to the slide rail, the fixation is released. Therefore, the sliding of the door holder on the slide rail becomes smooth when positioning the door with respect to the vehicle body, and the door can be smoothly positioned with respect to the vehicle body.

In one embodiment of each of the assembling apparatus and the assembling method, the slide rail extends in the vertical direction of the vehicle body.

The fact that the slide rail extends in the vertical direction means that the door is positioned in the height direction with respect to the vehicle body using the slide rail. In this case, the height of the door is adjusted while applying a force to the door holder to offset the load of the door holder and the door. At this time, if the door holder is fixed to the slide rail, even if the canceling force is applied to the door holder, the door holder does not slide on the slide rail, so that the height of the door cannot be adjusted. On the other hand, according to the assembling apparatus, the door holder is slid on the slide rail in advance to release the fixation. It becomes a floating state that slides up and down with force. Therefore, the height adjustment (positioning) of the door can be performed smoothly.

In one embodiment of each of the assembling apparatus and the assembling method, the material handling jig includes a floating cylinder that floats and holds the door holder on the base when positioning the door in the height direction with respect to the vehicle body. wherein the mechanism operates the floating cylinder to slide the door holder on the slide rail before positioning the door with respect to the vehicle body.

That is, the floating cylinder applies a force to the door holder to offset the loads of the door and the door holder, thereby holding the door holder in a floating state. Since the door holder slides on the slide rail in advance, the door holder is released from the slide rail, so that the door holder can be floated by the floating cylinder. Therefore, the door can be smoothly positioned with respect to the vehicle body. Further, since the floating cylinder is used for releasing the sticking, there is no need to provide a dedicated device for releasing the sticking.

In each of the assembling apparatus and the assembling method described above, in one embodiment, the door holder protrudes above the pedestal, and a lower portion of the door holder is slidably supported by the pedestal by the slide rail. Characterized by

In order to reduce the size and weight of the material handling jig, and in turn to reduce the size and weight of the robot that supports the material handling jig, the height of the material handling jig base is lower than the door holder and the position of the slide rail is lowered. In this case, the overhang force applied to the slide rail increases. Even in this case, according to this assembling device, the door holder is slid on the slide rail in advance to release the fixation, so that the height adjustment (positioning) of the door can be performed smoothly. In other words, the door holder can be smoothly slid up and down to adjust the height of the door without increasing the size and weight of the material handling jig.

According to the present invention, even if an overhang force from the door acts on the slide rail that guides the movement of the door holder when the door is positioned on the vehicle body, the door holder is slid on the slide rail in advance. The sliding of the door holder on the slide rail becomes smooth when positioning the door with respect to the vehicle body, and the door can be smoothly positioned with respect to the vehicle body.

It is a perspective view which shows the right-hand rear part of a vehicle body. It is the front view seen from the inner side of the vehicle door. 1 is a perspective view showing a hinge of a vehicle door; FIG. It is a front view showing a material handling jig. It is a rear view showing a material handling jig. FIG. 10 shows a hinge clamp device; It is the schematic which shows the structure of a door holder. It is a perspective view which shows the structure of a door holder. 1 is a perspective view showing a material handling jig holding a vehicle door and a vehicle body; FIG. FIG. 4 is a perspective view showing the material handling jig holding the vehicle door after being positioned and the vehicle body;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its applicability or its uses.

FIG. 1 shows the right rear portion of the vehicle body 1 . The vehicle body 1 is provided with two hinge fastening portions 13 for fastening door hinges, which will be described later, at two locations spaced apart in the vertical direction of the vehicle body (the vertical direction in the drawing). The vehicle body 1 is provided with an opening 12 that is opened and closed by a vehicle door. A body reference hole 14 is provided below the opening 12 .

FIG. 2 shows the front-opening, rear-side vehicle door 2 from the inner surface side. This vehicle door 2 is a door provided on the rear right side of the vehicle body. Two hinge mounting portions 23 are provided at the right end portion of the vehicle door 2 in the figure, which are spaced apart in the vertical direction of the vehicle body (vertical direction in the figure). The hinge 21 shown in FIG. 3 is fixed to the hinge mounting portion 23 . By fastening the hinge fixed to the vehicle door 2 to the hinge fastening portion 13 of the vehicle body 1 , the vehicle door is assembled so that the opening 12 of the vehicle body 1 can be opened and closed via the hinge 21 . Two door reference holes 22 are provided at substantially the center of the inner surface of the vehicle door 2 in the left-right direction at intervals in the up-down direction.

Hinge 21 is shown in FIG. The hinge 21 includes a door side hinge member 211 , a vehicle body side hinge member 212 and a hinge pin 213 . The door-side hinge member 211 is a member fixed to the hinge mounting portion 23 of the vehicle door 2 . The vehicle body side hinge member 212 is a member that is screwed to the hinge fastening portion 13 of the vehicle body 1 . The door side hinge member 211 and the vehicle body side hinge member 212 are rotatably connected by a hinge pin 213 .

4 and 5 show a material handling jig 3 for gripping the vehicle door 2. As shown in FIG. The vehicle door assembly apparatus according to the present embodiment includes a material handling jig 3 and a working robot (arm of the working robot shown in FIG. 7), and a control device for controlling the operations of the material handling jig 3 and the working robot. The work robot positions the vehicle door 2 held by the material handling jig 3 in the opening 12 of the vehicle body 1 in an open posture in which the hinge fastening portion 13 is exposed on the vehicle body outer surface (vehicle width direction outer surface).

In the following description of the material handling jig 3, the front of the vehicle body, the rear of the vehicle body, and the vehicle width direction are the directions of the posture of the material handling jig 3 at the time of assembly in FIG. In the description of the material handling jig 3, the inner side in the vehicle width direction is the vehicle body 1 side in FIG. 10, and the outer side is the side opposite to the vehicle body 1. ing. The door holder 31 is a member for holding the vehicle door 2 from its inner surface side. The pedestal 32 is a member for attaching to the arm of the robot. The door holder 31 is provided so as to protrude above the mount 32 . These door holders 31 and mounts 32 are connected by floating cylinders 4 . The floating cylinder 4 holds the door holder 31 floating with respect to the frame 32 . Further, the vehicle door 2 held by the door holder 31 can be moved in the vertical direction of the vehicle body through the driving of the floating cylinder 4 as necessary.

The door holder 31 is composed of a holding main frame 311 and a holding sub-frame 312 . The holding main frame 311 is a substantially rectangular frame extending in the vertical direction of the vehicle body. The holding subframe 312 is a member extending in the vehicle width direction. Both ends of the holding sub-frame 312 are fixed to both sides of the holding main frame 311 in the vehicle width direction. The holding main frame 311 is provided with three holding sub-frames 312 spaced apart in the vertical direction of the vehicle body. The door holder 31 is provided with door positioning means for positioning each of a plurality of portions of the door with respect to the door holder 31 . Further, the door holder 31 is provided with jig positioning means for positioning the material handling jig 3 with respect to the vehicle body 1 so that the door is in an open posture.

A door reference pin 314 that protrudes toward the inner surface of the vehicle door 2 by the operation of the cylinder device 3141 is provided on the holding sub-frame 312 positioned at the top and center in the vertical direction of the vehicle body. The vehicle door 2 is positioned with respect to the door holder 31 by inserting the door reference pin 314 into the door reference hole 22 of the vehicle door 2 .

The door holder 31 is provided with two door receiving/fall prevention devices 315 . The door receiving/fall prevention device 315 is composed of a door receiving member 3151 that enters a service hole opened on the inner surface of the vehicle door 2, and a door receiving drive cylinder 3152 that moves the door receiving member 3151 into and out of the service hole. The door receiving/fall prevention devices 315 are arranged at intervals in the vertical direction of the vehicle body. The upper door receiving/fall prevention device 315 is fixed to the left coupling point between the holding main frame 311 and the uppermost holding sub-frame 312 in the figure. The lower door catch/fall prevention device 315 is fixed to the lowest holding sub-frame 312 . Door receiving members 3151 of these door receiving/fall prevention devices 315 are directed toward the vehicle door 2 side.

At the inner side in the vehicle width direction (left side in FIG. 4) of the lower end of the holding main frame 311 in the vertical direction of the vehicle body, there is a body reference that protrudes inward in the vehicle width direction from the holding main frame 311 by the operation of the cylinder device 3131 . A pin 313 is provided. The body reference pin 313 is inserted into the body reference hole 14 of the vehicle body 1 and functions as a jig positioning means for positioning the material handling jig 3 with respect to the vehicle body 1 so that the vehicle door 2 is in an open posture.

Two door tip clamping devices 316 are provided outside the door holder 31 in the vehicle width direction (on the right side in FIG. 4) with a gap in the vertical direction of the vehicle body. The door tip clamping device 316 includes a clamping member 3161 and a clamping cylinder device 3162 for driving the clamping member 3161 . The door tip clamp device 316 functions as door positioning means by clamping the front flange of the vehicle door 2 from the inner side and the outer side with a clamp member 3161 . The door tip clamp device 316 is fixed to the door holder 31, and the clamp member 3161 projects outward in the vehicle width direction from the door holder 31. As shown in FIG.

Two hinge clamp devices 5 as door positioning means are provided inside the door holder 31 in the vehicle width direction (on the left side in FIG. 4). The number of hinge clamp devices 5 corresponds to the number of hinges 21 fixed to the vehicle door 2 .

FIG. 6 shows the hinge clamp device 5 that grips the hinge 21. As shown in FIG. The hinge clamp device 5 is composed of a hinge clamp base 51 , a fixed contact member 52 , a movable contact member 53 and a drive cylinder 534 . The hinge clamp base 51 is fixed to the door holder 31 . The hinge clamp device 5 is thereby fixed to the door holder 31 .

The fixed contact member 52 is a rod-shaped member extending in the longitudinal direction of the vehicle body (horizontal direction in the figure). A proximal end portion of the fixed contact member 52 is fixed to the hinge clamp base 51 . When the hinge clamp device 5 holds the hinge 21, the tip of the fixed contact member 52 is brought into contact with the vehicle body side hinge member 212 of the hinge 21 from the front side of the vehicle body (the left side in the figure).

The movable contact member 53 is rotatably supported by a support bracket 531 fixed to the hinge clamp base 51 by a pin 532 extending in the vehicle width direction. A drive cylinder 534 is pivotally supported on the support bracket 531 by a pin 533 extending in the vehicle width direction. The movable contact member 53 is rotated by the operation of the drive cylinder 534 . The movable contact member 53 is rotated by the operation of the drive cylinder 534 . The rotating movable contact member 53 is brought into contact with the vehicle body side hinge member 212 of the hinge 21 from the rear side of the vehicle body (right side in the figure). As the movable contact member 53 rotates, the movable contact member 53 and the fixed contact member 52 work together to clamp the vehicle body-side hinge member 212 of the hinge 21 from the longitudinal direction of the vehicle body.

As shown in FIGS. 4 and 5, the mount 32 is composed of a horizontal rectangular base member 321 and a rectangular vertical frame 322 rising from the base member 321 . Slide rails 6 are fixed to vertical frame portions on both sides of the vertical frame 322 in the vehicle width direction. The base member 321 is supported by the arm 7 of the working robot. By the operation of this arm 7, it can be moved.

A body clamp device 323 is provided at the inner (left side in FIG. 4) end portion of the base member 321 in the vehicle width direction. The body clamp device 323 has a clamp member 3231 and a body clamp drive cylinder 3232 . Clamp member 3231 is driven by actuation of body clamp drive cylinder 3232 . When assembling the vehicle door 2 to the vehicle body 1 , the lower side of the opening 12 of the vehicle body 1 in the vertical direction of the vehicle body is clamped by the clamp member 3231 of the body clamp device 323 .

As shown in FIG. 7, the door holder 31 is attached to the vertical frame 322 so as to be slidable in the vertical direction of the vehicle body (perpendicular to the plane of the drawing). A slide rail 6 extending in the vertical direction of the vehicle body along the vertical frame 322 is provided on the side of the vertical frame 322 facing the door holder 31 . A block 61 having a substantially C-shaped cross section is provided on the side of the door holder 31 facing the vertical frame 322 . This block 61 is fixed to the door holder 31 via a joint member 62 .

As shown in FIG. 8, the vertical frame 322 is provided with two slide rails 6 spaced apart in the vehicle width direction. A block 61 is slidably fitted to the slide rail 6 . Two blocks 61 are provided on each of the slide rails 6 at intervals in the vertical direction of the vehicle body. A block 61 and a joint member 62 are provided at the lower portion of the door holder 31 , and the lower portion of the door holder 31 is slidably supported by the frame 32 by the slide rail 6 via the block 61 and the joint member 62 .

The operation of the material handling jig 3 by the control device will be described.

When the material handling jig 3 grips the vehicle door 2 , the door reference pin 314 of the door holder 31 is inserted into each of the door reference holes 22 of the vehicle door 2 . Further, the side opposite to the hinge portion of the vehicle door 2 is clamped by the door tip clamp device 316 of the door holder 31 . Furthermore, the hinge 21 of the vehicle door 2 is clamped by the hinge clamping device 5 . As a result, the vehicle door 2 is positioned and held with respect to the material handling jig 3 . If the vehicle door 2 held by the material handling jig 3 were to fall, the service hole portion opened on the inner surface of the vehicle door 2 would be caught by the door receiving member 3151 of the door receiving/fall prevention device 315. there is

By inserting the body reference pin 313 of the material handling jig 3 into the body reference hole 14 of the vehicle body 1 and clamping the vehicle body 1 with the body clamp device 323, the vehicle body 1 and the material handling jig 3 are positioned. Further, the vehicle door 2 is positioned with respect to the material handling jig 3 by the six positioning means described above. Therefore, the vehicle door 2 is positioned with respect to the vehicle body 1 through the material handling jig 3 .

Before inserting the body reference pin 313 into the body reference hole 14 of the vehicle body 1, the control device operates the floating cylinder 4 to slide the door holder 31 up and down by a predetermined amount with respect to the frame 32, and then moves the floating cylinder 4. , a mechanism for holding the door holder 31 holding the vehicle door 2 in a floating state on the frame 32 .

<Vehicle door assembly method>
An assembling procedure for assembling the vehicle door 2 to the vehicle body 1 will be described.

FIG. 9 shows the material handling jig 3 holding the vehicle door 2 and the vehicle body 1 . The material handling jig 3 grips the vehicle door 2 as described above.

The vehicle door 2 held by the material handling jig 3 is conveyed to the opening 12 of the vehicle body 1 by the operation of the working robot, and positioned in the opening 12 in an open posture. After the door holder 31 is forcibly slid vertically with respect to the frame 32 by the operation of the floating cylinder 4, a cylinder pressure that offsets the loads of the vehicle door 2 and the door holder 31 is applied to the floating cylinder 4, and the vehicle door is opened. 2 and a door holder 31 are held floating on a frame 32 . In this state, the body reference pin 313 of the material handling jig 3 is inserted into the body reference hole 14 of the vehicle body 1 . Due to the floating holding, the door holder 31 slides up and down on the slide rail 6 to absorb variations in vehicle body position, and the vehicle door 2 is positioned on the vehicle body 1 . After this positioning, the vehicle body 1 is clamped by the body clamp device 323 of the material handling jig 3, and the positions of the vehicle body 1 and the material handling jig 3 are fixed as shown in FIG. It takes about 1 second from the forced sliding of the door holder 31 by the floating cylinder 4 to the insertion of the body reference pin 313 into the body reference hole 14 in the floating holding state. This time is preferably 10 seconds or less, more preferably 5 seconds or less.

The vehicle door 2 positioned in the open position with respect to the vehicle body 1 via the material handling jig 3 has the hinge 21 screwed to the hinge fastening portion 13 of the vehicle body 1 from the outside of the vehicle body. As a result, the vehicle door 2 is assembled to the vehicle body 1 .

<Effects of material handling equipment>
When the vehicle door 2 is held by the material handling jig 3 , an overhang force (moment load) from the vehicle door 2 acts on the slide rail 6 of the material handling jig 3 . If this overhanging force continues, the sliding surfaces of the slide rail 6 and the door holder 31 are fixed to each other. This makes it difficult for the door holder 31 to slide smoothly on the slide rail 6 .

Therefore, in the above-described embodiment, when positioning the vehicle door 2 with respect to the vehicle body 1, the door holder 31 slides up and down on the slide rail 6 by operating the floating cylinder 4 in advance. As a result, even if an overhang force is applied to the slide rail 6 from the vehicle door 2 and the door holder 31 is fixed to the slide rail 6, the fixation is released. Therefore, when the body reference pin 313 is inserted into the body reference hole 14 while the door holder 31 holding the vehicle door 2 is held floating on the base 32, the block 61 of the door holder 31 smoothly slides on the slide rail 6 of the base 32. will move. That is, it is possible to smoothly position the vehicle door 2 with respect to the vehicle body 1 .

Further, in the above-described embodiment, the floating cylinder 4 is used for releasing the fixation between the door holder 31 and the slide rail 6, so there is no need to provide a dedicated device for releasing the fixation.

Further, in the above-described embodiment, from the viewpoint of downsizing and weight saving of the material handling jig 3, and further downsizing and weight saving of the robot that supports the material handling jig 3, the height of the frame 32 of the material handling jig 3 is adjusted to the height of the door holder 31. , and the position of the slide rail 6 is lowered. In this case, the overhang force from the vehicle door 2 applied to the slide rail 6 increases. Even in this case, by sliding the door holder 31 on the slide rail 6 in advance, the adhesion between the door holder 31 and the slide rail 6 is released, so that the vehicle door 2 can be positioned smoothly. In other words, the vehicle door 2 can be positioned by smoothly sliding the door holder 31 without increasing the size and weight of the material handling jig 3 .

1 car body
2 vehicle door
3 Material handling jig
31 door holder
32 mount
4 floating cylinder
6 slide rail

Claims (8)

An assembling device for assembling a door to a vehicle body for opening and closing an opening of the vehicle body via a hinge,
a material handling jig that holds the door;
a working robot that supports the material handling jig and transports the door to an opening of the vehicle body;
The material handling jig includes a frame, a door holder that holds the door, and a slide rail that is provided on the frame and guides movement of the door holder when positioning the door on the vehicle body,
The assembling device further comprises a mechanism for sliding the door holder on the slide rail before positioning the door with respect to the vehicle body. The assembly device according to claim 1, wherein
The assembling device, wherein the slide rail extends in the vertical direction of the vehicle body. The assembly device according to claim 2, wherein
The material handling jig includes a floating cylinder that floats and holds the door holder on the frame when positioning the door in a height direction with respect to the vehicle body,
An assembly device, wherein the mechanism operates the floating cylinder to slide the door holder on the slide rail before positioning the door with respect to the vehicle body. In the assembling apparatus according to claim 2 or 3,
The door holder protrudes upward from the mount,
An assembling device, wherein a lower part of the door holder is slidably supported by the slide rail on the base. A vehicle door assembling method for assembling a door that opens and closes an opening of a vehicle body via a hinge to the vehicle body using a material handling jig,
The material handling jig is
a pedestal;
a door holder that holds the door;
a slide rail that is provided on the frame and guides movement of the door holder when positioning the door on the vehicle body;
holding the door in the door holder;
a step of moving the mount to position the door so that it assumes a mounting posture with respect to the vehicle body;
positioning the door with respect to the vehicle body while sliding the door holder on the slide rail;
a step of fixing the frame to the vehicle body in the positioned state;
coupling the door to the vehicle body by the hinge;
The method of assembling a vehicle door further comprises a step of sliding the door holder on the slide rail before the step of positioning the door on the vehicle body. In the vehicle door assembly method according to claim 5,
A method for assembling a vehicle door, wherein the slide rail extends vertically. In the vehicle door assembly method according to claim 6,
The material handling jig includes a floating cylinder that floats and holds the door holder on the frame when positioning the door in the height direction with respect to the vehicle body,
A method for assembling a vehicle door, comprising operating the floating cylinder to slide the door holder on the slide rail before the step of positioning the door with respect to the vehicle body. In the vehicle door assembly method according to claim 6 or 7,
The door holder protrudes upward from the mount,
A method for assembling a vehicle door, wherein a lower portion of the door holder is slidably supported by the slide rail on the base.

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