JPS6141509Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a bellows pipe for automobiles.

(Prior art) As shown in Fig. 1, in an automobile bellows pipe, the end of a ring 3, the end of a blade 2, and the end of a bellows 1 are fitted in order from the outer circumferential side through spot welds W. It is constructed by fixing the

(Problems to be Solved by the Invention) Therefore, in the conventional automobile bellows pipe, since the end of the blade 2 is located on the inner peripheral side of the ring 3 located on the outermost peripheral side of the bellows pipe,
The position of the end of the blade 2 cannot be confirmed from the outside.

Therefore, there is no problem when the end of the blade 2 extends outward beyond the spot weld W as shown in FIG. 1 under normal conditions, but as shown in FIG. If the edge is located inwardly and has come off the spot weld W, this cannot be confirmed, and the blade 2 may not be fixed.

In such a case, the blade 2 may come off during use, causing problems such as the loss of the protective function of the bellows body and a decrease in the spring constant.

(Means for Solving the Problems) The present invention relates to an automobile bellows pipe proposed in order to solve the above problems. Therefore, the above-mentioned problem is solved.

(Function) As described above, in the bellows pipe for automobiles according to the present invention, at the ring end, the blade end, and the welded fixing part of the bellows end, the blade end is visually observed at the ring end located on the outermost circumferential side. Since a peephole for confirmation is formed, the position of the end of the blade clamped between the ring end and the bellows end can be visually confirmed from the peephole,
The position of the blade end can be adjusted.

(Effect of the invention) As described above, according to the bellows pipe for an automobile according to the present invention, the blade end can be connected to the ring end by using the peephole for visual confirmation of the blade end provided in the ring end. Adjust the position so that it can be welded to the bellows body, and securely weld and fix the blade end, the ring end, and the bellows end, so that the bellows' original protective function will be lost if the blade comes off during use. This can prevent problems such as a decrease in the spring constant or a decrease in the spring constant from occurring.

(Example) The present invention will be described below with reference to the illustrated embodiments.

Structure of the present invention Fig. 3 shows a bellows pipe for an automobile according to the present invention, in which the ring 12 end, the blade end 13, and the bellows 11 end are fitted in order from the outer circumferential side, and the spot weld W is fitted. Fixed through.

A peephole 14 for visually confirming the end of the blade is bored at the end of the ring 12, and the position of the peephole 14 is as follows when the blade 13 is seen through the hole 14.
The blade 13 is connected to the ring 12 and the bellows 1.
1 and 1, so that it can be confirmed that the spot welding is in the normal position.

Note that the position of the peephole 14 near the spot weld W is set to a size necessary and sufficient for fixing the ring 12, blade 13, and bellows 11 by spot welding.

Furthermore, the peepholes 14 may be round or square holes or elongated holes, and one to two to four peepholes may be provided along the circumferential direction of the ring 12, and the number thereof is arbitrary. However, the desired purpose can usually be achieved with just three.

Effects of the Embodiment Since the illustrated embodiment is constructed as described above, if the blade 13 can be visually observed from the outside of the ring 12 through the peephole 14 for visually confirming the blade end, the blade 13 is normal. In this position, the spot welding operation between the blade 13, the ring 12, and the bellows 11 can be performed.

If the blade 13 cannot be seen through the peephole 14, the position of the blade 13 is corrected so that it can be seen through the peephole 14, and then spot welding is performed.

Effects of the Embodiment As described above, according to the embodiment, the blade 13 is always visible by using the peephole 14 for visually checking the blade end provided in the ring 12 located on the outermost side of the end of the automobile bellows pipe. Adjust the ends of the blade 13 and ring 1 so that they are in the normal position.
2 and the bellows 11 are always securely fixed by spot welding, and it is possible to prevent the blade 13 from being completed as a product with insufficient fixation.

[Brief explanation of the drawing]

1 and 2 are vertical cross-sectional views showing the welded and fixed part of a conventional bellows pipe for an automobile in normal and abnormal conditions, respectively, and FIG. 3 is a side view showing an embodiment of the bellows pipe for an automobile according to the present invention. Figures 4 and 5 are longitudinal sectional side views of the main parts, showing the states in which the blade ends are located at the outermost and innermost positions, respectively. 11... Bellows body, 12... Ring, 13
...Blade, 14...Peephole.

Claims (1)

[Scope of utility model registration request] A bellows pipe for automobiles in which a ring end, a blade end, and a bellows are sequentially fitted from the outer circumferential side and fixed by welding, is also characterized in that a peephole is formed in the ring end for visually checking the blade end. bellows pipes for automobiles.