JPS6044188B2 - How to install the roof bow - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method of attaching a roof bow.

For example, the conventional roof bow installation method is as shown in Figure 1~
There is something like the one shown in Figure 4. That is, a roof bow 3 is provided on the back side of the roof 2 of the vehicle body 1 and is installed between the left and right side roof rails 4, and supports and reinforces the roof 2 placed above it at a constant interval l. but,
The attachment of the roof hoe 3 depends on the "screwing method" or the "welding method". The "screw fastening method" is as shown in Fig. 3. After welding the roof 2 to the trip channel 5 of the side roof rail 4, the joint end 6 of the roof bow 3 is attached to the side roof rail 4 while adjusting the distance 1 between the roof 2 and the roof 2 to a constant value. [Specifically, the inner side roof rail 7] is tightened with screws 8, and the "welding method" is to set the roof bow 3 from outside onto the vehicle body 1 without covering the roof 2, as shown in Fig. 3 to the side loop rail 4 [specifically, to the upper end joint 10 of the inner and outer side roof rails 7 and 9], the roof 2 is welded to the trip channel 5 of the side roof rail 4.
It is used for welding. In the figure, reference numeral 11 denotes an adhesive which is interposed between the roof 2 and the roof bow 3. However, among these conventional roof bow installation methods, although the former "screw fastening method" can maintain the accuracy of interval 1, it requires indoor work to install roof bow 3 after covering roof 2. However, in the latter "welding method", the loop 2 is attached before fixing the roof bow 3 by welding, so although the work is easy, the distance l called "skip" is low. Because it is difficult to maintain the accuracy of the loop 2, in some cases, the roof bow 3 may push up and cause a protrusion on the loop 2, or conversely, it may float up without being bonded to the roof bow 3, causing the loop to become sticky. There is a problem that the support/reinforcement of 2 does not work properly.

Originally, the loop 2 made of a thin plate is indispensable for supporting and reinforcing the roof bow 3, and this support and reinforcement is performed over the entire length of the loop 2 in the width direction at a constant interval 1 with an adhesive 11 interposed. Therefore, the method for installing roof bow 3 aims to maintain the accuracy of interval 1 as well as ease of work, and loop 2
Although it is necessary that the loop 2 does not become sticky over its entire length, as mentioned above, the conventional method of attaching a roof bow has its advantages and disadvantages. This invention solves the drawbacks of the conventional roof bow mounting method.The roof bow is temporarily attached from the outside of the car body where the loop is not attached, and the loop is covered with the loop without fixing it. It is an object of the present invention to solve the above-mentioned problems by providing a method that can simultaneously attach the roof bow while ensuring the accuracy of the roof bow.

Hereinafter, this invention will be explained based on the drawings from FIG. 5 onwards.

FIGS. 5 to 8 are diagrams showing an embodiment of the present invention. The side roof rail 4a forms a mounting plane 12 for the roof bow 3a at the upper end joint 10a of the inner and outer side roof rails 7a, 9a, and the outer side roof rail 9a is provided with a drip channel 5a as in the conventional case. A claw 13 is bent and formed on the mounting plane 12 as a "positioning means" for the roof bow 3a. The roof bow 3a has a joint end 6a for attachment to the side roof rail 4a, and a hole 14 for engaging the pawl 13 is formed therein as a "positioning means".

Spacers 15 and adhesive 11a are applied at appropriate locations throughout the roof bow 3a. This spacer 15 is used to maintain the accuracy of the interval 1, and although not shown, it may be used in place of the spacer by forming a protrusion by embossing at a suitable location on the roof bow 3a. Also, roof bow 3a
And if the product precision of loop 2a is very good and the interval 1 can be secured within the required dimension when each is installed,
It is also possible to omit the spacer 15. ．． A thermosetting adhesive 16 is applied in spots or lines between the joint end 6a of the roof bow 3a and the mounting plane 12 of the side roof rail 4a.

This adhesive 16 may be applied to either or both of the joining end portion 6a and the mounting plane 12. The side edge of the loop 2a is the drip channel 5 of the side roof rail 4a.
A is welded and fixed to the roof bow 3a, and the corresponding part with the roof bow 3a is fixed with an adhesive 1 while maintaining a distance of 1 through a spacer 15.
It is attached to the roof bow 3a at 1a. Adhesive 16 above
The adhesive 11a is selected to have sufficient strength even if there is some distance between the parts to be adhered, and is hardened by the heat of the heating furnace during the painting process to fix the parts to be adhered to each other. To install the roof bow 3a, first, the roof bow 3a is carried in from above outside the vehicle body and installed between both side roof rails 4a of the vehicle body 1.

Specifically, the adhesive 16 is applied to the joint end 6a onto the mounting plane 12.
It is temporarily installed in a non-fixed state through the This adhesive 16 has not yet hardened, so that the roof bow 3a is temporarily fixed to the side roof rail 4a.
The engagement between the claw 13 and the hole 14 prevents any positional deviation. Next, the loop 2a is welded and fixed to the side roof rail 4a. Specifically, the loop 2a is set over the roof bow 3a, and the side edges of the loop 2a are welded and fixed to the drip channel 5a. At this time, the entire roof bow 3a is pushed down by the loop 2a via the spacer 15, and the distance 1
The temporary attachment state of the bending point is corrected while ensuring that. At this time, the engagement between the pawl 13 and the hole 14 restricts the roof bow 3a so that the position of the roof bow 3a does not shift much with respect to the side roof rail 4a. In this state, the car body is transported to the painting process, and the adhesive 16, 11 is coated with the heat in the heating furnace.
a is cured, and the roof bow 3a is fixed. In the above explanation, one of the left and right joint ends of the roof bow was mainly opened on the joint end 6a side, but both the left and right joint ends may be treated in the above-mentioned manner, or the other The joint end side may be welded, and only one joint end 6a side may be treated by the method using the adhesive described above.

As explained above, according to the present invention, spacers and thermosetting adhesive are applied to appropriate locations throughout the roof bow, and at least one of the joining ends of the roof bow is provided with a hole in advance, and the hole is accommodated. A claw is provided in advance on the mounting plane formed at the upper end joint of the side roof rail, and a thermosetting adhesive is applied to either the mounting plane or the joint end, and the hole and the claw are engaged. Temporarily attach the roof bow to the side roof rail in an unfixed state using the above-mentioned adhesive in an uncured state, and then cover the roof bow from above with a spacer interposed between the loops and the roof bow at a constant distance. When welding the side edge to the drip channel of the side roof rail, press down the entire roof bow with the loop through the spacer and bend it while maintaining the above distance, correct the previous temporary installation condition, and then tighten the loop. After welding and fixing the roof bow to the side roof rail, we decided to heat and harden the above adhesive in a heating furnace during the car body painting process to fix the joint end of the roof bow to the side roof rail and the loop to the roof bow. The roof bow is temporarily attached from the outside of the car body, which has not yet been welded and fixed, through the engagement of holes and claws and uncured adhesive, and the loop is placed over the roof bow. Since the temporary installation condition can be corrected by pressing down and bending, the installation work efficiency can be improved.Also, the adhesive can be heated and hardened in the heating furnace of the car body painting process to maintain the adhesive condition. Since it is fixed, the installation process is easy, and the distance between the loop and roof bow can be adjusted according to the installation of the loop, which also has the advantage that accurate distance accuracy can be obtained through the spacer. There is.

Furthermore, since the spacing between the loop and the roof bow can be expected to be accurate, it is possible to prevent unevenness or "stickiness" from occurring in the loop, making it easier to attach multiple roof bows, which increases the degree of support and reinforcement for the loop. This strengthens the loop, making it possible to reduce the thickness of the loop, thereby reducing vehicle weight and cost.

[Brief explanation of drawings]

Figure 1 is a schematic perspective view of a vehicle body for explaining the conventional method of attaching a roof bow, Figure 2 is a sectional view taken along line ■A sectional view taken along the line; FIG. 4 is a sectional view similar to FIG. 3 showing another conventional example; FIG. 5 is a sectional view for explaining an embodiment of the roof bow attachment method according to the present invention; Fig. 6 is a sectional view taken along the line ■-■ in Fig. 5, Fig. 7 is an enlarged sectional view of the part indicated by the arrow ■ in Fig. 5, and Fig. 8 is an enlarged sectional view of the part indicated by the arrow ■ in Fig. 5. FIG. 292a●●●●●Lunif, 393a●●●●●●Lunif bow, 4,4a・・・Side roof rail, l
...... Distance between loop and roof bow, 5,5a...
...Drip channel, 6, 6a... Joint end of roof bow, 10, 10a... Upper end joint of inner and outer side roof rails, 11, 11
a...Adhesive, 12...Mounting plane, 1
5...Spacer.

Claims (1)

[Claims] 1. In the method of installing a roof bow that is installed between both side roof rails of a vehicle body to support and reinforce the roof that is placed on top of the roof rail, spacers and thermosetting adhesive are applied to the entire roof bow in appropriate places, and the roof bow is At least one of the joint ends is provided with a hole in advance, and a mounting plane formed at the upper end joint of the side roof rail corresponding to this hole is provided with a claw in advance, and either of this mounting plane and the joint end is heat-cured. The roof bow is temporarily attached to the side roof rail in an unfixed state through the uncured adhesive by engaging the hole and the pawl, and attaching the roof bow to the side roof rail with a spacer interposed between them. When welding the side edge of the covered roof to the drip channel of the side roof rail,
Push down the entire roof bow on the roof via a spacer and bend it while maintaining the above distance, correct the previous temporary installation condition, and after fixing the roof and side roof rails by welding, use the heating furnace in the car body painting process. A method for attaching a roof bow, comprising heating and curing the adhesive within a chamber to fix the joint end of the roof bow to the side roof rail and the roof to the roof bow.