JPS5853265Y2 - Load-bearing pipe equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to tubes subjected to loads, i.e. bending moments and torsional stresses, such as steering column tubes in vehicles.

A vehicle's steering column tube surrounds the steering shaft and is subject to bending moments and torsional stresses.

Therefore, in the prior art, it is impossible to use an inexpensive tube as a steering column tube, which is a case where a plate material is bent into a tubular shape and the circumferential matching portion is left unprocessed, leaving a gap in the housing. Therefore, it is necessary to use an expensive electric resistance welded pipe whose mating parts are completely joined by high frequency welding or the like.

An object of the present invention is to provide a tube device in which a hollow tube, which is manufactured at low cost by bending from plate materials without the need to process the joints, can be used as a tube that is subjected to bending moment and torsional stress.

Next, embodiments of the present invention will be described with reference to the drawings.

The column tube 1 is manufactured from a plate material by bending.
The axially extending mating points 2 are not treated in any way and form a circumferential gap.

A ring 3 is attached to the upper end of the column tube 1,
The column tube 1 surrounds the steering shaft.

The bracket 4 has a receiving portion 5 that receives the outer peripheral surface of the column tube 1 over a predetermined angular range.

A reinforcing rib 6 is provided on the outer peripheral surface of the receiving portion 5.

The column tube 1 is arranged so that the mating point 2 of the bracket 4 is located approximately at the center of the receiving part 5 in the circumferential direction.
It can be received within.

In other words, the column tube 1 and the bracket 4 are connected over a predetermined circumferential range including the joining point 2 of the column tube 1.
The receiver is adjacent to part 5.

The bearing part 5 of the bracket 4 is spot welded to the column tube 1 at respective points 1, 8 on either side of the mating point 2.

As shown in FIG. 3, a steering column cover 9 and a steering wheel 10 are attached to the upper end of the column tube 1, and the column tube 1 is supported on the lower surface of an instrument panel via a bracket 4.

Loads such as bending moment and torsional stress are carried by the continuous cylindrical wall surface of the column tube 1 in the range from point I to point 8 on the side that does not include the joining point 2, but at the joining point 2. In the range from location 7 to location 8 on the side that includes, the fixed π at locations 7 and 8
The receiver is held by the bracket 4 instead of the column tube 1.

In this way, abnormal deformation of the column tube 1 due to the load is prevented despite the existence of a gap at the joining point 2.

As described above, according to the present invention, the column tube 1 manufactured by bending from a plate material has a circumferential matching point 2.
It is adjacent to the bracket 4 over a predetermined range including the area, and is welded and fixed to the bracket 4 on both sides of the mating point 20.

Therefore, the bracket 4 bears the load in a predetermined circumferential range including the mating location 2, and abnormal deformation of the column tube 1 can be prevented despite the existence of a gap at the mating location 2.

Although the present invention has been described with reference to an embodiment in which it is applied to a column tube of a steering device, it is obvious that the present invention can be applied to any other device in which an electric resistance welded tube is conventionally used to cope with abnormal deformation due to load. Not even.

Further, in the embodiment, the joint portion 2 is not processed at all, but the present invention can also be applied to a hollow tube (column tube 1) in which the joint portion 2 is processed to the extent that it does not become expensive.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view of the embodiment of the present invention, and FIG. 3 is a view showing a support mode of the column tube of FIG. 1. 1... Column tube, 2... Matching point, 4... Bracket, 7, 8...
A place.

Claims (1)

[Scope of utility model registration request] A hollow tube manufactured by bending from a plate material, and adjacent to the hollow tube in a predetermined range in the circumferential direction including the circumferential joining point of the hollow storage and on both sides of the circumferential matching point of the hollow tube. Load-bearing tube device, characterized in that it comprises a support fixed to the hollow tube.