JP7372135B2 - Jig structure for back door installation - Google Patents

Description

The present invention relates to a back door mounting jig structure for assembling a resin back door to a vehicle body.

Conventionally, the back door of a hatchback vehicle, which blocks the hatchback doorway at the rear of a box-shaped vehicle body, has an upper end attached to the vehicle body via a door hinge, and the back door is opened and closed by flipping up around the door hinge. has been done.
In automobile assembly work, the back door is carried using a transfer jig at the back door assembly position and is assembled into the hatchback door at the rear of the vehicle body.
Such back door assembly work is carried out by grasping the back door at the tip of the operating part of the loading machine and carrying it to the rear of the vehicle body on the assembly line. During the process, a hinge for attaching the back door is attached and fixed to the hatchback door opening at the rear of the vehicle body, and the upper edge of the back door is aligned with the door hinge bracket and fixed with bolts.
That is, the upper end edge of the back door is brought into alignment with the bracket surface of the hinge body fixed to the hatchback door opening, and then the hinge bracket on the back door side is fixed with a fixing bolt.

As a method for assembling the door via an attachment hinge when attaching the door to the vehicle body in this manner, techniques described in Patent Documents 1 and 2 below are disclosed.

Japanese Patent Application Publication No. 2016-215849 Japanese Patent Application Publication No. 3-256626

The work of assembling the back door to the vehicle body side hinge bracket involves carrying the back door onto the vehicle body that has been moved onto the assembly line using a transfer jig, which requires extremely delicate movement of the mounting machine. be done.
For example, after grasping the back door with a transfer jig and transporting it to the hatchback door opening position on the vehicle body, first attach the back door to the outside surface of one of the back door side hinge brackets of the door hinge fixed to the hatchback door opening. It is necessary to align the hinge mounting surfaces of the upper edge. During this alignment work, one back door hinge bracket of the door hinge fixed to the hatchback doorway is bent in a dogleg position with respect to the other back door hinge bracket around the hinge axis. . In particular, with a torque hinge, the back door side hinge bracket is biased in the closing direction, so the back door side hinge bracket tends to take a doglegged position.
Adjusting the posture of the back door while accommodating the doglegged posture of the back door side hinge bracket and aligning the back door hinge mounting surface with the back door side hinge bracket would cause excessive movement of the transfer jig. This imposes a burden, and a situation arises that cannot be handled within the operating range of the arm of an existing robot or the like.

In this invention, the back door hinge bracket in the dogleg position on the vehicle body side is designed so that the hinge mounting surface of the back door can be easily aligned with the back door hinge bracket in the dogleg position on the vehicle body side. The jig of the present invention is interposed between the upper end edge of the back door carried by the transfer jig, and the back door side hinge bracket in the doglegged position is raised as much as possible, and the back door side hinge bracket is moved. It is an object of the present invention to provide a jig structure that enables the face-to-face work and the subsequent connection and fixing work to be performed reliably and easily, saves labor in the back door installation work, and shortens the installation work.

One aspect of the present invention is a jig used in the work of assembling the upper end edge of a back door to a hinge body fixed to a hatchback door opening of a car body in a car body assembly process,
The jig body has a certain wall thickness, and when it comes into contact with the inside surface of the dogleg-shaped back door side hinge bracket of the hatchback door opening, the protruding head of the fixing bolt for fixing the hinge touches the bottom surface of the jig body. A notch is formed in a part of the bottom part to prevent interference, and a hinge bracket raising part is formed at the tip of the jig body to vertically raise the back door side hinge bracket, which is slanted in a dogleg shape. The rear end of the jig body is the operating tip of the door-mounted machine and forms an operating receiving part when pushing the jig body in the direction of the hinge axis, and is connected to the hinge body fixed to the hatchback door opening during back door assembly work. The jig main body interposed between the tip of the door mounting machine operating part is pushed out by the mounting machine operating part, and the hinge bracket raising part of the jig main body moves the approximately dogleg-shaped back door side hinge bracket to the hinge shaft. This is a jig structure for attaching a back door, characterized in that it is configured to stand up around the center.

Moreover, in one of the selective aspects of the present invention, the front half of the jig main body forms a hinge bracket raised part, and a part of the lower bottom surface of the front half is formed with a cutout surface to make it thin. , the rear part of the jig body forms an actuation receiving part connected to the hinge bracket raising part, and one side of the actuation receiving part has a bolt insertion hole for attaching to the hinge actuation arm of the loading machine. It features a back door mounting jig structure.

Moreover, in one of the selective aspects of the present invention, the hinge bracket raising part of the jig main body is configured in a substantially L shape by the lower protruding side part and the pushing -up joint part, When activated , the lower protruding side part is configured to be inserted into the gap between the lower edge of the back door side bracket of the hinge body and the hinge shaft , and the pushing -up joint part is configured to insert into the gap between the hinge body and the hinge body when the hinge body is tilted inward. This is a back door mounting jig structure characterized in that the door side bracket can be pushed up from the inner surface.

According to the invention of claim 1, there is provided a jig used in the work of assembling the upper end edge of the back door to the hinge main body fixed to the hatchback door opening of the vehicle body in the vehicle body assembly process, wherein the jig main body has a constant wall thickness. When the jig body is brought into contact with the inside surface of the dogleg-shaped back door side hinge bracket of the hatchback door opening, the bottom part of the jig body should be adjusted so that the protruding head of the fixing bolt for fixing the hinge does not interfere with the bottom face of the jig body. At the same time, the tip of the jig body is formed with a hinge bracket raising part for vertically raising the hinge bracket on the back door side, which is inclined in a dogleg shape, and the rear end of the jig body is The operating tip of the back door mounted machine forms the operating receiving part when pushing the jig body in the direction of the hinge axis, and the hinge body fixed to the hatchback door opening and the tip of the back door mounted machine operating part form the operating part when pushing the jig body in the hinge axis direction. At the same time, the jig main body interposed between the two is pushed out by the loading machine operating part, and the approximately dogleg-shaped back door side hinge bracket is erected around the hinge axis by the hinge bracket raising part of the jig main body. Therefore, when the jig main body is interposed between the tip of the hinge alignment actuation arm of the loading machine and the back door side hinge bracket of the hinge body, the movement of the hinge alignment actuation arm and the forward movement of the backdoor loading machine by the operator will cause The jig body pushes up the back door side hinge bracket around the hinge axis to take the tilt angle posture that best suits the hinge mounting side of the transported back door. In other words, by using a jig, the angle of inclination of the back door side bracket can be set to match as much as possible the tilted posture of the back door that has been transported and moved by the back door mounting machine, and the work of installing the back door can be simplified. This makes it easy to move on to the next process.
Therefore, the conventional manual work of aligning and fixing the back door side hinge bracket of the hinge body to the upper edge of the back door can be done efficiently, easily and accurately by using the jig of the present invention. effective.
Furthermore, the jig main body has a simple block structure, and is effective in accurately and easily aligning the hinge surfaces simply by interposing it between the bracket of the hinge main body and the tip of the operating arm.

Further, according to the invention according to claim 2 of the present invention, the front half of the jig main body forms a hinge bracket raising part, and a part of the lower bottom surface of the front half is formed with a cutout surface to make it thin. At the same time, the rear half of the jig body forms an actuation receiving part connected to the hinge bracket raising part, and one side of the actuation receiving part has a bolt insertion hole for attaching to the hinge actuation arm of a backdoor-equipped machine. Because of the structure, the cutout surface on the bottom of the front half of the jig body avoids interference with the protruding head of the fixing bolt when the hinge body is connected and fixed to the back door, and the jig body can be smoothly attached to the back door side hinge bracket. It can be slid and inserted, and has the effect that the jig body can reliably perform the function of pushing up the hinge.

Further, according to the third aspect of the present invention, the hinge bracket raising part of the jig main body is configured in a substantially L shape by the lower protruding side part and the pushing -up joint part, and The lower protruding side part is configured so that it can be inserted into the gap between the lower edge of the back door side bracket of the hinge body and the hinge shaft during the raising operation , and the pushing -up joint part is inserted into the hinge body when the hinge body is tilted inward. Since the back door side bracket is configured to be able to be pushed up from the inside surface, the jig body is interposed between the tip of the hinge alignment operating arm and the back door side bracket of the hinge body, and the front half hinge bracket By inserting the lower protruding side of the raised part into the gap between the hinge shaft and the raised joint, the back door side bracket of the hinge body is raised up at the raised joint part, and the tilted posture of the bracket is reliably corrected. This has the effect that the connection and fixing work from the face-to-face alignment between the upper edge of the back door and the bracket of the hinge body can be easily, reliably, and accurately performed.

FIG. 2 is a side cross-sectional view showing the positional relationship between the jig main body, the hinge main body, the back door, and the rear part of the vehicle body according to the embodiment of the present invention. It is a side sectional view when the jig main body concerning an embodiment of the present invention enters into a hinge main body. It is a side view when attaching the back door concerning embodiment of this invention to a hinge main body. FIG. 2 is a perspective view showing a jig main body and a hinge main body according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the jig main body according to the embodiment of the present invention has entered the hinge main body. FIG. 2 is a perspective view showing a state in which a protruding head is fitted into a cutout surface of a jig main body according to an embodiment of the present invention. FIG. 2 is an upper perspective view showing a jig main body according to an embodiment of the present invention. FIG. 2 is a lower perspective view showing a jig main body according to an embodiment of the present invention. FIG. 1 is a perspective view showing a back door mounting machine according to an embodiment of the present invention. FIG. 2 is a side view showing a state in which the back door according to the embodiment of the present invention is attached to a vehicle, and is a diagram showing a state before the back door is mounted on the back door mounting machine. FIG. 2 is a side view showing a state in which a back door according to an embodiment of the present invention is attached to a vehicle, and a diagram showing a state in which the back door is fixed to a back door mounting machine. FIG. 3 is a side view showing a state in which the back door according to the embodiment of the present invention is attached to a vehicle, and a diagram showing a state in which dampers are attached to the left and right side surfaces of the back door.

Next, embodiments for carrying out the present invention will be described with reference to the drawings.

Hereinafter, examples of back door mounting jig structures will be explained in detail based on drawings. We will sequentially explain the structure of the tool body, how it is used, the hinge body, the back door transfer jig, etc.
First, the configuration of the hatchback doorway, back door, etc. will be explained.

(About the mounting structure between hatchback doorway and back door)
The hatchback door opening B1 is formed on the rear end surface of the hatchback body B, and as shown in FIG. B3 is formed near the left and right ends, and the hinge main body 100 is fixed to this flat surface step B3. Note that the hinge body 100 is fixed to the flat surface step B3 using bolts for fixing a vehicle body-side hinge bracket 110, which will be described later, as shown in FIG.
In this way, the back door D is attached to the hatchback door opening B1 via the hinge body 100 so as to be openable and closable. That is, in the vehicle body assembly process, the upper end edge of the back door D is attached via the back door side hinge bracket 120 of the hinge body 100 to the flat surface step B3 of the hatchback door opening B1 so as to be openable and closable.

The jig main body 200 of the present invention allows the back door side hinge bracket 120 of the hinge main body 100 to stand up in a dogleg position when attaching the back door D to the hatchback door opening B1 on the rear end surface of the vehicle body via the hinge main body 100. It is used to adjust the posture and the positional relationship between the back door D and the vehicle body B.

In order to erect the back door side hinge bracket 120 of the hinge body 100, as shown in FIG. This is done by advancing and pushing up the tip of the actuating part of the door mounting machine 300.

As described above, the vehicle body side hinge bracket 110 of the hinge body 100 is fixed to the flat surface step B3 of the hatchback door opening B1 with bolts H, and as shown in FIGS. 2 and 5, the vehicle body side hinge bracket 110 of the hinge body 100 After the bracket 120 is brought into contact with the hinge bracket raising part 220 of the jig main body 200 and raised, the bracket 120 is brought into a posture that matches the standing posture of the back door side hinge bracket 120. After that, as shown in FIG. 3, the backdoor mounting machine 300 moves the backdoor D, moves the upper edge of the backdoor D to the hinge attachment position on the upper edge of the hatchback door opening B1, and moves the upper edge of the backdoor D to the hinge attachment position on the upper edge of the hatchback door opening B1, The upper end edge of the back door D is brought into surface contact with the outer surface of the hinge bracket 120, and both 120 and D are connected and fixed with bolts.
The jig main body 200 of the present invention is used to ensure surface contact and fixing of the outer surface of the back door side hinge bracket 120 and the upper end edge of the back door D in this series of back door assembly processes.

(About the structure of the hinge body)
In the hinge body 100, both hinge brackets 110 and 120 are pivotally supported around a hinge shaft 101.
As shown in FIG. 4, the hinge body 100 is composed of a vehicle body side hinge bracket 110 and a back door side hinge bracket 120, with the hinge shaft 101 of the hinge body 100 being a pivot axis.
The vehicle body side hinge bracket 110 is fixed in advance to the flat surface step B3 of the hatchback door opening B1 with bolts H. The other back door side hinge bracket 120 is pivoted in a doglegged position as shown in FIG. Moreover, as shown in FIG. 5, the upper end edge of the back door side hinge bracket 120 is formed into a substantially dogleg shape when viewed from the side, and the bent end edge is connected to the back door mounting edge. Section 121.

In the structure of the hinge main body 100, the inner side of the upper edge of the back door D carried by the back door mounting machine 300 is brought into contact with the outer surface of the back door mounting edge part 121 of the back door side hinge bracket 120, and connected with a bolt. Set and fix.
In this series of back door D assembly work, the jig main body 200 of the present invention is used to correct the back door side hinge bracket 120 from a collapsed position to an upright position.

(About the structure of the jig body)
The jig main body 200 used as described above is configured as a block with a constant wall thickness, as shown in FIGS. 4, 7, and 8. When the hinge bracket 120 is brought into contact with the inner surface of the hinge bracket 120 on the side of the jig body 200, the protruding head H1 of the bolt H for fixing the hinge bracket 110 on the vehicle body side of the hinge body 100 is inserted into the jig body 200. A notch surface 210 is formed in a part of the bottom surface portion 201 of the jig main body 200 as a non-interfering portion of the protruding head H1 so as not to interfere with the bottom surface and hinder the sliding operation.

In addition, in order to make the jig main body 200 stand upright by contacting the back door side hinge bracket 120 that is inclined in a dogleg shape, the jig main body 200 is provided with a hinge bracket raising portion of a certain height, as shown in FIGS. 4 and 5. 220 is formed. Further, the rear half of the jig main body 200 forms an actuation receiving part 230 for connecting with the backdoor-equipped machine 300, and the actuation receiving part 230 for connecting to the operating tip of the backdoor-equipped machine 300. It functions to push out the jig main body 200 in the direction of the hinge shaft 101.
Further, the left and right jig bodies 200 slide inwardly toward each other in the direction of the hinge shaft 101. By moving the jig main body 200 in this manner, the hinge main body 100 is sandwiched through the protruding head H1, and the position in the left and right direction is fixed by this biasing force. Further, by sliding inward, the protruding head H1 fits into the groove of the notch surface 210, and the front and rear positions are fixed. At this time, the positional relationship between the hinge body 100 attached to the vehicle body B and the jig body 200 is fixed. That is, by fixing the positional relationship between the jig body 200 and the hinge body 100, the front, rear, left, and right positional relationships between the vehicle body B and the back door D are determined.

As shown in FIGS. 1 and 2, the jig main body 200 is inserted between the hinge main body 100 fixed to the hatchback door opening B1 and the tip of the actuating part of the back door mounting machine 300 during the assembly work of the back door D. By intervening and operating the operating tip of the back door mounting machine 300 so that the back door mounting machine 300 moves forward, the inner surface of the back door side hinge bracket 120 and the push-up joint part 222 come into contact. Then, the approximately dogleg-shaped back door side hinge bracket 120 is pushed up about the hinge shaft 101 via the hinge bracket raising part 220.

Furthermore, as shown in FIG. 8, the jig main body 200 on which the hinge bracket raising part 220 is formed has a cutout surface 210 formed in a part of the lower bottom surface of the front half to make the jig main body 200 thin. A horizontally elongated operation receiving part 230 is formed by projecting from the left and right sides of the bracket raising part 220.

As shown in FIG. 6, a substantially U-shaped non-interference notch 251 for a bolt tightening tool is formed in the rear end surface of the operation receiving portion 230. That is, when the back door side hinge bracket 120 and the upper edge of the back door D are connected and fixed from below with bolts after they are aligned, the bolt tightening tool is directed diagonally upward from below toward the upper edge of the back door. It is installed on the aircraft. The non-interference notch 251 configured in this manner can perform the function of supporting the bolt tightening tool.

On the bottom surface of the front half of the jig main body 200, that is, on the bottom surface 201, there is a protruding bolt H that fixes the vehicle body side hinge bracket 110 of the hinge main body 100 and the hatchback door opening B1 when the jig main body 200 slides, as described above. A cutout surface 210 is formed so that the head H1 does not interfere with it. Furthermore, a bolt insertion hole 240 is provided on one side of the actuation receiving portion 230 to be connected to the hinge actuation arm 310 of the back door mounting machine 300.

(About machines equipped with backdoor)
A jig main body 200 is connected to the tip operating part of the back door mounting machine 300, and after moving the hinge operating arm 310 forward, the operator operates the back door mounting machine 300 to raise the hinge bracket raising part 220. By inserting the lower protruding piece 221 into the gap between the hinge shaft 101 and the vehicle body side hinge bracket 110, the hinge bracket 120 is operated to stand up.
Thereafter, as described above, the left and right hinge bracket raising parts 220 are moved inward in the direction of the hinge shaft 101, thereby fixing the hinge main body 100 of the vehicle and the hinge bracket raising parts 220. That is, the position of the back door (front, rear, left, and right) is determined via the hinge bracket raising part 220 and the back door mounting machine 300. Note that the hinge bracket raising part 220 and the hinge body 100 are fixed by fitting the bolt head H1 of the bolt H for fixing the hinge body 100 to the vehicle body B into the notch surface 210 on the back side of the hinge bracket raising part 220. The engagement restricts movement in the front-back direction, and furthermore, the movement in the left-right direction is restricted by the biasing force that moves the hinge bracket raising portion 220 inside the hinge shaft 101.

As shown in FIG. 9, the back door equipped machine 300 has a back door alignment actuation arm 370 at the left and right ends of the base frame 320 that is diagonally telescopic in accordance with the angle of the hinge bracket 121. A hinge alignment operating arm holding case 380 is connected to the tip. The hinge alignment actuation arm holding case 380 telescopically accommodates the hinge alignment actuation arm 330. A hinge actuation arm 310 is protruded from the tip of the arm 330 via a horizontal frame. is connected to one side of the operation receiving part 230 at the rear of the jig main body 200.

The operation receiving part 230 of the jig main body 200 is integrally connected to the approximately L-shaped hinge bracket raising part 220, and the hinge bracket raising part 220 is moved by the advancing operation of the hinge alignment operation arm 330 of the back door mounting machine 300. The lower protruding side part 221 enters between the vehicle body side hinge bracket 110 of the hinge body 100 and the hinge shaft 101, and the operator further advances the back door mounting machine 300 to push up the joint side. The portion 222 pushes up the back door side hinge bracket 120 in the collapsed state.

Further, left and right door receiving members 340, 340 for supporting the back door D in order to carry it are provided on the left and right midway portions of the base frame 320 of the back door mounting machine 300. The left and right door receiving members 340, 340 receive the back and forth rocking of the back door D while supporting the door frame connected to the side edge of the back door D via a U-shaped groove 340a provided at the tip of the vertical support arm. This makes it possible to adjust the alignment between the back door side hinge bracket 120 and the upper end edge of the back door D.

Further, a support frame 350 is disposed diagonally rearward from the center of the base frame 320 of the backdoor-equipped machine 300, and the base end of the support frame 350 is connected to a door lock mechanism D1 provided at the center of the lower end of the backdoor D. A connecting ring 351 is provided for this purpose.
Therefore, while the back door D is carried by the back door mounting device 300, the upper edge of the back door D and the back door side hinge bracket 120 of the hinge body 100 are aligned and fixed in series, so that As shown in the figure, the back door is supported at three points by the left and right support members 340, 340 of the back door mounted machine 300 and the connecting ring 351 of the rear support frame 350.
As shown in FIG. 12, the damper 360 is installed between the hatchback door opening B1 and the back door D after the back door D and the hinge bracket 120 are fastened with bolts (not shown) and the jig main body 200 is unlocked. will be intervened.

The back door D supported by the three-point support by the back door mounting machine 300 has its upper edge, that is, the upper edge connected to the hatchback door opening B1 via the hinge body 100, inclined downward. At the same time, the actuator of the back door mounting device 300 is operated to gradually approach the outer surface of the back door mounting edge portion 121 of the hinge body 100, and the back door side hinge bracket 120 and the inner surface of the upper edge of the back door D are brought into alignment. The installation work of the back door D is completed by connecting and fixing them with bolts (not shown).

The work of aligning and fixing the upper end edge of the back door D to the back door side hinge bracket 120 of the hinge body 100 using the back door mounting machine 300 is performed in the steps shown in FIG. 3 and FIGS. 10 to 12. . That is, the operator operates the back door mounting machine 300 to move the jig main body 200 forward, and the back door side hinge bracket 120 is erected, thereby displacing it into a substantially horizontal position.

In this way, various actuators of the back door mounting machine 300 correct the posture of the back door side hinge bracket 120 via the jig body 200, and finally the outer surface of the back door mounting edge portion 121 of the back door side hinge bracket 120 is corrected. Adjust to align with the upper edge of the back door, and finally connect and secure with bolts. Such work can be performed mechanically, accurately and quickly by controlling various actuators of the back door mounting machine 300.

(About the work procedure for assembling the back door)
A back door mounting machine 300 equipped with various actuators is installed at a work site in a car body assembly process.
In the vehicle body assembly process, the hatchback vehicle is installed with the hatchback door opening B1 open, and the back door mounting machine 300 is installed facing the hatchback door opening B1.
A backdoor D is mounted on the backdoor-equipped machine 300 via a three-point support function.
In the hatchback vehicle, the hinge body 100 is fixed to the upper edge of the hatchback door opening B1 formed on the rear end surface, that is, to the flat surface step B3 for attaching the hinge body 100 that is continuous to the roof plate B2 of the vehicle body B. .

Next, as shown in FIG. 10, a jig main body 200 is interposed between the hinge main body 100 and the tip of the actuating part of the back door mounting machine 300.
Then, the tip of the actuating part of the back door mounting machine 300 is moved forward, and the back door side hinge bracket 120 of the hinge body 100 is brought into contact with the hinge bracket raising part 220 of the jig body 200, as shown in FIG. Make them stand up.
At this time, as shown in FIG. 11, the hinge bracket raising part 220 is advanced by the advancing operation of the hinge alignment actuating arm 330 of the back door mounting machine 300, and the lower protruding side part 221 is attached to the vehicle body side hinge bracket of the hinge body 100. 110 and the hinge shaft 101, and by further advancing operation, the push-up joint portion 222 finally pushes up the back door side hinge bracket 120 in the collapsed state.

When the hinge bracket raising part 220 is slid and moved forward in this way, the protruding head H1 of the fixing bolt H for fixing the vehicle body side hinge bracket 110 of the hinge body 100 interferes with the bottom surface of the jig body 200 and slides. Smooth forward sliding is achieved by a cutout surface 210 formed in a part of the bottom surface 201 of the jig main body 200 as a non-interfering part with the protruding head H1 of the bolt H so as not to interfere with the forward movement. This notch surface 210 is cut out to have approximately the same diameter as the diameter of the protruding head H1 of the bolt H, and when the protruding head H1 enters the notch surface 210, the protruding head H1 and the notch surface 210 are cut out. The hinge bracket raising part 220 is engaged and fixed, and the installation angle of the back door side hinge bracket 120 is determined.

In this way, the jig body 200 corrects the doglegged posture of the back door side hinge bracket 120 of the hinge body 100 to the upright posture, and also corrects the upper edge of the back door D supported at three points on the back door mounting machine 300. As shown in FIG. 3, the back door mounting device 300 moves the back door D obliquely downward to adapt the back door mounting edge portion 121 of the back door side hinge bracket 120 to the upright position. Finally, the upper end edge of the back door D is brought into surface contact with the outer surface of the back door side hinge bracket 120, and finally both are connected and fixed with bolts (not shown).

When connecting the two with bolts after such surface contact, the bolt tightening tool is advanced diagonally upward from below after the back door side hinge bracket 120 and the upper end edge of the back door D are aligned, and the bolt tightening operation is performed. . As shown in FIG. 6, the bolt tightening tool does not interfere with the jig main body 200 due to the substantially U-shaped non-interference notch 251 of the bolt tightening tool formed on the rear end surface of the operation receiving part 230 of the jig main body. bolt tightening operation can be performed without

Furthermore, when connecting both ends of the upper edge of the back door to the left and right hinge bodies 100 that are connected and fixed to both sides of the hatchback door opening B1, a pair of left and right jig bodies 200 are used to connect one side at a time.

The back door D supported by the three-point support by the back door mounting machine 300 is hinged to its upper edge, that is, the upper edge 120 connected to the hatchback door opening B1 via the hinge body 100. As the back door alignment actuating arm 370 contracts according to the inclination angle of The installation work of the back door D is completed by aligning the parts with each other and fastening them with bolts (not shown).

Note that although the jig main body 200 is constructed as a part of the back door mounting machine 300, it can also be constructed as a separate body. For example, the jig main body 200 is attached to the vehicle body side hinge bracket 110 in advance, and the back door mounting machine 300 grips the jig main body 200 and fixes the jig main body 200 in position.

Finally, the description of each embodiment mentioned above is an example of the present invention, and the present invention is not limited to the above-mentioned embodiment. Therefore, it goes without saying that various changes can be made to the embodiments other than those described above, depending on the design, etc., as long as they do not depart from the technical idea of the present invention.

100 Hinge main body 101 Hinge shaft 110 Vehicle side hinge bracket 120 Back door side hinge bracket 121 Back door mounting edge portion 200 Jig main body 201 Bottom portion 210 Notch surface 220 Hinge bracket raising portion 221 Lower protruding side portion 222 Push-up joint side Part 230 Operation receiving part 240 Bolt insertion hole 250 Notch part 251 Non-interference notch part 300 Back door mounting machine 310 Hinge operating arm 320 Base frame 330 Hinge alignment operating arm 340 Left and right door receiving member 340a U-shaped groove 350 Support frame 351 Connection ring 360 Damper 370 Back door alignment operation arm 380 Hinge alignment operation arm holding case B Vehicle body B1 Hatchback door opening B2 Roof plate B3 Flat surface step D Back door D1 Door lock mechanism H Bolt H1 Projecting head

Claims (3)

A jig used in the work of assembling the upper end edge of the back door to the hinge body fixed to the hatchback door opening of the car body in the car body assembly process,
The jig body has a certain wall thickness, and when it comes into contact with the inside surface of the dogleg-shaped back door side hinge bracket of the hatchback door opening, the protruding head of the fixing bolt for fixing the hinge touches the bottom surface of the jig body. A notch is formed in a part of the bottom part to prevent interference, and a hinge bracket raising part is formed at the tip of the jig body to vertically raise the back door side hinge bracket, which is slanted in a dogleg shape. death,
The rear end of the jig body forms an operation receiving part when the jig body is pushed out in the direction of the hinge axis at the operating tip of the door mounting machine.
During back door assembly work, the jig main body interposed between the hinge body fixed to the hatchback door opening and the tip of the door mounting machine operating part is pushed out by the mounting machine operating part, and the hinge bracket raising part of the jig main body is pushed out. A jig structure for mounting a back door, characterized in that the back door side hinge bracket, which is approximately doglegged, is configured to stand up around the hinge axis. The front half of the jig body forms a hinge bracket raising part, and a part of the lower bottom surface of the front half has a cutout surface to make it thin, and the rear half of the jig body is connected to the hinge bracket raising part. 2. The back door mounting jig according to claim 1, wherein the back door mounting jig is formed with a bolt insertion hole for mounting to a hinge operating arm of a loaded machine. structure. The hinge bracket raising part of the jig body is formed into a substantially L-shape by a lower protruding side part and a pushing- up joint part, and when the bracket is raised, the lower protruding side part is connected to the back of the hinge body. It is configured so that it can be inserted into the gap between the lower edge of the door side bracket and the hinge shaft , and the push- up joint part is configured so that the back door side bracket on the inwardly inclined hinge body can be pushed up from the inside surface. The back door mounting jig structure according to claim 1 or 2, characterized in that:

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