JPH0144305Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a front side member positioning jig for an automobile.

When the front of an automobile is crushed due to a collision or the like, it is necessary to replace the front side member, which is a structural member thereof, with a new one. The engine and front suspension are attached to the front side members, and the front floor and darts panel are attached to the rear of the members, so sufficient dimensional accuracy is required when attaching each component to the body.

Conventionally, when replacing front side members, a front cross member that connects the intermediate portions of both side members is used as a temporary positioning jig. However, recently, the number of automobiles having a frameless structure without such a front cross member has increased, and it has become difficult to install the front side members in the correct position without a special jig.

The purpose of this invention is to provide a general-purpose positioning jig for front side member replacement that can be applied to multiple vehicle models without a front cross member.

The positioning jig according to this invention has at least four
The present invention includes a book connecting member, a joint member that connects these connecting members in a cross-shaped manner so that the position can be adjusted, and a front side member positioning member that is attached to these connecting members so that the position can be adjusted.

An embodiment of this invention will be described below with reference to the accompanying drawings. In the plan view of FIG. 1 and the side view of FIG. 2, arrow F indicates the forward direction of the vehicle, symbol 1 indicates the right front side member, and symbol 2
indicates the left front side member. The connecting members 3 to 7 are formed of iron pipes, and are connected to each other by a joint member 8 in a grid shape and adjustable. For example, as shown in FIG. 3, the joint member 8 has sliding holes 8a and 8b for allowing the connecting members 4 and 5 to intersect in a slidable manner without colliding with each other, and can be tightened with screws 8c and 8b. It is fixed to the connecting members 4, 5 by. Connecting member 3
7, positioning members 9 and 10 for positioning the left and right front side members 1 and 2 are attached to the front and rear 3 and 4 so that their positions can be adjusted. As shown in FIG. 4, the front positioning member 9 has a first locator support 1 which has a sliding hole 11a for slidably holding the connecting member 3 and is fixed to the connecting member 3 with a screw 11b.
1 and a screw 1 on the top surface of this locator support 11.
2a and a positioning pin 12b at the top.
and a first locator 12 having a product stopper 12c.
It consists of. The locators 12 are mounted so as to face each other at left and right positions, and the distance from the bottom surface to the positioning pin 12b may vary depending on the vehicle model. On the other hand, the rear positioning member 10 includes a first locator support 1 that is slidably fitted to the connecting member 4, as shown in FIG.
1 and a screw 1 on the top surface of this locator support 11.
A positioning pipe 13 is fixed to the top by 3a.
and a second locator 13 having b. A positioning member 15 for positioning the center portion of the front end cross member 14 for attaching the center member is attached to the front end of the central connecting member 6 so that its position can be adjusted. As shown in FIG. 6, this positioning member 15 has a sliding hole 16a for slidably holding the connecting member 6, and has a second hole 16a fixed to the connecting member 6 with a screw 16b.
It consists of a locator support 16 and a second locator 13 fixed to the upper surface of the locator support 16 with screws 13a. This second locator support 16 has substantially the same shape as the first locator support 11, but its legs are longer than this.

Assembly of such a jig is performed as follows. First, as shown in FIG. 7, the lower sliding holes 8a of the joint member 8 are inserted into the front and rear connecting members 3 and 4, and the connecting members 3 and 4 are temporarily fixed in the center, and then both sides of the joint members 3 and 4 are temporarily fixed. Insert the first locator support 11 from the locator support 11 and temporarily fasten them in the opposite direction, and then insert the joint member 8 at each end.
Insert the lower sliding hole 8a and place it on the reference surface GL as shown in FIG. Next, as shown in FIG. 9, the upper sliding holes 8 of the joint members 8 at both ends
Insert the left and right connecting members 5 and 7 into b, extend the front end by length ₁ , and first connect the front end joint member 8.
Tighten completely. Next, the rear both-end joint member 8 is fully tightened at a position with a center-to-center distance of ₂ from the front both-end joint member 8. Then, the locator support 11 is returned to its normal state and temporarily fixed, so that the entire grid is supported by the locator 11 on the reference plane GL, as shown in FIG. Next, as shown in FIG.
The locator support 11 is fixed to the connecting member 3 by fixing the locator supports 2 facing each other and adjusting the distance ₃ between the centers of the positioning pins 12b to a predetermined value. At this time, if the left and right locators 12 are of different heights, be sure not to confuse them, and as shown in FIG. Carefully fix the support 11 to the connecting member 3.

Next, as shown in FIG. 13, the second locators 13 are fixed to the rear locator support 11 so as to face each other. Then, as shown in FIG. 14, the lower part of the height adjustment rod 17 is inserted into the positioning pipe 13b on the upper surface of the second locator 13, and the distance piece 18 is inserted into the upper part of the rod to position the first locator 12 in front. After aligning the height with the pin 12b, a plate gauge 19 is inserted between the pin 12b and the tip of the height adjustment rod 17, and the center distance ₄ between the two is determined. Since the plate gauge 19 has a large number of holes determined for each applicable vehicle model, the holes can be inserted into the pin 12b and the tip of the height adjustment rod 17. After calculating the center distance between the left and right locators 12 and 13 in this way, use another plate gauge 20 to calculate the center distance ₅ between the second locators 13 at the rear. The rear locator support 11 supporting the locator 13 is fixed to the connecting member 4. At this time, if the heights between the second locators 13 are different, another distance piece is used to align the heights and then calculate the distance between the centers.

Then, as shown in FIG. 15, the central connecting member 6 is passed through the upper sliding hole 8b of both joint members 8 in the central part, and the distance ₆ from the left front locator 12 is a predetermined value, and both ends After adjusting the center joint members 8 so that they are substantially aligned with the rear ends of the connecting members 5 and 7, the central joint members 8 are fully tightened to the connecting members 3, 4, and 6. Next, the second locator support 16 is inserted into the front end of the central connecting member 6, and the second locator support 13 is fixed to the upper surface thereof. 14, the heights of the left and right front locators 12 with the positioning pins 12b are aligned using the height adjustment rod 17 inserted into the second locator 13 and the distance piece 18, and then the plate gauge 19 to determine the center-to-center distance ₇ between the left and right front locators 12 and the center locator 13, and finally tighten the center locator support 16 supporting the center locator 13 to the center connecting member 6. At this time, it is advisable to remove the product abutment 12c of the locator 12 so as not to interfere with the plate gauge 19.

The jig shown in FIGS. 1 and 2 was completed in the above manner. On such a jig, align the positioning pins 1b of the front locator 12 of the jig with the positioning holes provided in the front of the front side members 1 and 2, and align the rear front suspension mounting part with the rear locator of the jig. 1
After placing it on the positioning pipe 13b of No. 3,
Perform any necessary welding and bolting work. In this embodiment, the center tip locator 13 can also be used to position the center of the front end cross member 14 for attaching the center member.

As described above, the front side member positioning jig according to this invention includes at least four connecting members, a joint member for connecting these connecting members in a parallel grid shape and adjustable position, and a position adjustable for these connecting members. Since the front side member positioning member is equipped with a front side member positioning member, it is possible to realize a highly versatile front side member positioning jig that has a wide range of application to vehicle bodies of monolithic or monolithic structure without a front cross member. can.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a front side member positioning jig showing an embodiment of this invention, and FIG.
FIG. 3 is a side view of the jig shown in FIG. 1, FIG. 3 is a perspective view showing an example of a joint member used in this invention, and FIG.
The figure is a perspective view showing one example of the positioning member used in this invention, FIG. 5 is a perspective view showing another example of the positioning member used in this invention, and FIG.
Perspective views showing still another example of the positioning member used in this invention, and FIGS. 7 to 15 are explanatory diagrams showing the assembly procedure of the jig shown in FIG. 1. 1, 2...Front side member, 3~7...
Connection member, 8... Joint member, 9, 10... Positioning member, 11... First locator support, 12...
...First locator, 13...Second locator, 14...
...Front end cross member, 15... Positioning member, 16... Second locator support.

Claims (1)

[Claims for Utility Model Registration] At least four connecting members; a joint member for connecting the connecting members in a grid pattern in a position-adjustable manner; and a front side member attached to the connecting member in a position-adjustable manner. A front side member positioning jig comprising a positioning member.