JPS6350202Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a roll bar in an automobile.

For example, in a covered automobile as shown in FIG. 1, a roll bar extending in a substantially gate-like shape over the heads of the occupants is attached to the side frame of the vehicle body in order to protect the occupants in the event of a rollover.

Generally, both legs of this roll bar are rigidly connected to the side frame of the vehicle body by bolts, and the structure for this purpose is, for example,
-There is one shown in Publication No. 14967. In this device, the lower end surfaces of the legs of the roll bar are placed on the top surface of the side frame of the vehicle body in abutting manner, and a connecting plate is provided that extends downward from the leg portion along the inner panel of the side frame of the vehicle body. and the inner panel of the vehicle side frame are bolted together. Further, a reinforcing member extending obliquely from the inner surface of the outer panel of the roll bar to the inner panel of the vehicle side frame is interposed to strengthen the joint rigidity between the roll bar and the vehicle side frame. However, the structure of such a conventional example has the following various problems. In other words, when a moment is applied to tilt the legs of the roll bar, a strong tensile force is applied to the coupling plate, so the welding structure for attaching the coupling plate to the roll bar body must have sufficient strength. In addition, the above-mentioned reinforcing members are also required, which increases the cost. Although it acts to press the plate and the vehicle side frame in horizontal direction, it does not act in the direction of drawing the abutting top surface of the vehicle side frame and the lower end surface of the roll bar leg toward each other, so the lower end surface of the leg The problems include poor sealing between the top surfaces of the side frames of the vehicle body, and the fact that the coupling plate bulges toward the interior of the vehicle, which impairs the interior space and may cause injuries.

The present invention solves the above-mentioned problems in the conventional example, has a simple structure and easy assembly, has sufficient joint strength, improves the sealing performance at the joint, and eliminates the indoor bulge as in the conventional example. It is an object of the present invention to provide a mounting structure for a roll bar in an automobile, which is configured such that it cannot be formed.

In order to achieve this objective, the present invention takes the following technical measures. That is, in a roll bar mounting structure in which the lower end of the leg of a portal roll bar formed in a closed cross-section structure by an inner panel and an outer panel is fixed by abutting against a top panel constituting the upper surface of the vehicle side frame, the leg of the roll bar is fixed. A lower panel is formed at the lower end to face the upper panel in the vertical direction of the vehicle body, and the upper panel and the lower panel are tightened and fixed in the vertical direction of the vehicle body with bolts, while an inner panel forming the inner surface of the leg portion and the vehicle body are formed. A working hole for tightening the bolt is formed inside the tightening portion of at least one of the inner panels constituting the inner surface of the side frame, and the working hole is formed between the inner panel of the leg portion and the vehicle body side. It is characterized by being closed by a cover that is tightened and fixed so as to extend over the inner panel of the frame.

By taking the above measures, when the lower end of the leg of the roll bar is placed against the predetermined position of the upper panel of the side frame of the vehicle body, the upper panel and the lower panel formed at the lower end of the leg of the roll bar are vertically moved. are placed opposite each other. Then, the roll bar is bolted through a working hole formed on the inside of the inner panel near the part where the lower panel is formed at the lower end of the roll bar, or on the inside of the inner panel near the mounting position of the roll bar on the side frame of the vehicle body. The cover can be firmly fixed to the body very easily by simply inserting it into the bolt hole of the lower panel and the bolt hole of the upper panel, tightening it, and then attaching the cover. At this time, the tightening force of the bolts acts to pull the roll bar toward the vehicle side frame through the lower panel formed at the lower end of the roll bar leg. If a slight clearance is provided on the bolt tightening surface of the Atsupa panel, when the bolts are tightened, the lower panel and the Atsupa panel will be elastically brought into close contact, and the reaction of this elasticity will always cause the area around the lower end of the roll bar to tighten around the Atsupa panel. Works to elastically adhere. As a result,
The seal between the roll bar and the vehicle side frame is perfect. In addition, since the side part of the roll bar is fixed by being placed against the top panel of the side frame of the vehicle body, as in the conventional example, the connecting plate that is extended from this point to fix the roll bar is placed on the indoor side. It will not swell.

Furthermore, since the cover that closes the work hole is tightened and fixed so as to span over the inner panel of the leg and the inner panel of the vehicle side frame, this cover connects the roll bar and the vehicle body side frame. It also functions as a connecting reinforcing member, allowing the roll bar to be more firmly fixed to the vehicle body.

In view of the above, the roll bar mounting structure of the present invention has a simple structure, is easy to work with, does not form a bulge on the passenger compartment side of the roll bar with respect to the side frame of the vehicle body, and is extremely easy to use. In addition to being able to firmly connect and fix the roll bar, it also has the effect of improving the sealing performance between the roll bar and the vehicle side frame because the roll bar is connected while being pulled toward the vehicle side frame.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, the roll bar 1 has a pair of legs 1a and a horizontal beam connecting the upper ends of the legs.The roll bar 1 is provided with high rigidity to prevent the ceiling from collapsing when it rolls over. The roll bar 1 is rigidly attached to the top surfaces of vehicle body side frames 2, 2 forming both sides of an automobile, for example near a door.

An example of the mounting structure of the roll bar 1 according to the present invention is shown in FIGS. 3 and 4. The roll bar 1 has a closed cross-sectional structure with an outer panel 3 and an inner panel 4, and a lower panel 7, which has a pair of front and rear bolt insertion holes 6, 6 at the bottom end of the legs of the roll bar, is connected to the vehicle body side frame 2. It is fixed so as to face the top panel 9 in the vertical direction. Further, a working hole 8 is opened in the inner panel 4. on the other hand,
In the upper panel (upper rail) 9 forming the upper surface of the vehicle side frame 2, the lower panel 7 of the roll bar 1 is attached to the portion where the roll bar 1 is to be attached.
Bolt holes or screw holes 10, 10 are provided corresponding to the bolt insertion holes 6, 6 provided in the. Further, an inner panel 11 forming the inner surface of the vehicle body side frame 2 in the vicinity of the mounting position of the roll bar 1 is cut wide to form a working hole 12. In the illustrated example, the screw holes 10, 10 are constructed by welding nuts 14, 14 to the back sides of through holes 13, 13 provided in the upper panel 9.
In addition, a part of the upper panel 9 is bulged out, and a recess 16 is provided in the lower panel 7 of the roll bar 1 into which the bulged part 15 can fit, so that the upper panel 9 of the roll bar 1 is At the same time, the bolt insertion holes 6, 6 and the screw holes 10, 10 coincide with each other, thereby facilitating the installation work.

Note that the portion of the lower panel 7 of the roll bar 1 where the bolt insertion holes 6, 6 are to be provided and the upper panel 9 that faces this portion may be made to face each other with a slight distance from each other before screwing the bolts 17. preferable.

To rigidly connect the roll bar 1 to the vehicle side frame 2, as shown in FIG.
It is only necessary to pass the bolt 17 through the bolt insertion holes 6, 6 of the lower panel 7 through the working hole 8, and screw it into the screw hole of the upper panel 9. At this time, the bolt insertion portions of the lower panel 7 and the upper panel 9 are elastically brought into close contact with each other as shown in FIG. 4, and the roll bar 1 is always elastically pressed against the vehicle side frame 2 by the reaction force of this elastic force. fixed in the state. Therefore, the sealing performance between the lower end of the leg of the roll bar 1 and the vehicle body side frame is improved. In order to further improve this sealing performance, it is effective to interpose a gasket between the leg portion 1a and the upper panel 9. Furthermore, as shown in FIG. 4, the work hole 8 of the roll bar 1 and the vehicle side frame 2 are
A cover 18 for closing the working hole 12 is fastened and fixed so as to span over the inner panel 4 of the leg portion of the roll bar 1 and the inner panel 11 of the vehicle body side frame 2. With this cover 18,
A roll bar 1 is firmly fixed to a vehicle side frame 2. Further, this cover 18 not only maintains the aesthetic appearance of the interior of the vehicle, but also serves to increase the rigidity of the inner panel of the roll bar or the inner panel of the vehicle body side frame.

It goes without saying that the scope of the present invention is not limited to the embodiments shown in the figures. For example, one of the two working holes 8 and 12 may be omitted. Further, in the illustrated example, the bolt 17 is screwed into a nut 14 welded to the back surface of the upper panel 9 of the side frame of the vehicle body, but a general nut may be used.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of an automobile equipped with a roll bar to which the present invention is applied, Fig. 2 is an overall perspective view of an embodiment of the roll bar, and Fig. 3 is a main part of an embodiment of the present invention. FIG. 4 is a cross-sectional view showing the assembly shown in FIG. 3 in an assembled state. 1...roll bar, 1a...(roll bar)
Legs, 2... Vehicle side frame, 4... (side) inner panel, 7... Lower panel, 8... Working hole, 9...
...Atsupa panel, 11...Inner panel (of the vehicle side frame), 12...Work hole, 17...Bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] In a roll bar mounting structure in which the lower end of the leg of a portal roll bar formed in a closed cross-section structure by an inner panel and an outer panel is fixed by abutting against a top panel that constitutes the upper surface of the vehicle side frame. A lower panel is formed at the lower end of the leg of the roll bar to face the upper panel in the vertical direction of the vehicle body, and the upper panel and the lower panel are tightened and fixed in the vertical direction of the vehicle body with bolts, while the inner surface of the leg portion is A working hole for tightening the bolt is formed inside the tightening portion of at least one of the inner panel constituting the inner panel and the inner panel constituting the inner surface of the vehicle side frame, and the working hole is formed in the leg portion. A roll bar mounting structure characterized in that the roll bar is closed by a cover that is tightened and fixed so as to extend over an inner panel and the inner panel of the vehicle side frame.