CN201325478Y - Energy-absorbing steering column device - Google Patents

Abstract

The utility model relates to an energy-absorbing steering column device which solves the problem in the existing energy-absorbing steering column that the energy-absorbing process is not continuous and the maintenance cost is high. The device comprises an outer casing, a fixing frame is arranged on the outer casing, and an upper column tube and a lower column tube are respectively inserted at two ends of the outer casing. The energy-absorbing steering column device is characterized in that the upper column tube is a ladder-shaped tube, the upper column tube and the lower column tube are connected through a spline, and a pressure spring is arranged between the ladder of the upper column tube and the end surface relative to the ladder of the upper column tube of the lower column tube. The energy-absorbing steering column device has the advantages that the pressure spring can absorb the energy made by hitting the steering wheel by the driver, the continuity of energy absorption of the whole process is good, and the driver can not be attacked due to that the steering column is crumpled; in the low-speed collision, if the steering column and car connected parts are not broken, the device can be used repeatedly and the maintenance cost is low; in addition, as the upper column tube and the lower column tube are connected through the spline, the structure is simple and reliable.

Description

The energy-absorbing steering tube column device

Technical field

The utility model is particularly related to a kind of energy-absorbing steering tube column device that is provided on the automobile.

Background technology

Steering column on the general-utility car is merely able to regulate direction at present, but does not possess bearing circle height adjustment function, has only some high-grade cars that energy-absorbing steering tube column just is installed, and can avoid chaufeur and bearing circle generation hard collision when collision happens.And existing energy-absorbing steering tube column adopts hitch point to come off usually or inner structure presses the feedback mode to realize energy-absorbing, shortcoming is that endergonic process is discontinuous, promptly discontinuous for the absorption process of chaufeur Impact energy, even and under low speed impact, also must change whole tubing string, maintenance cost height.

Summary of the invention

The purpose of this utility model is to provide a kind of simple and reliable for structure, and endergonic process is continuous, reusable energy-absorbing steering tube column device.

The utility model is achieved in that it has an outer tube, on outer tube, be provided with fixed support, column jecket and following column jecket on the outer tube two ends are fitted with respectively, its special character is: described upward column jecket is stepped, last column jecket is connected by spline with following column jecket, between the ladder of last column jecket and the lower prop pipe end face relative with this ladder pressure spring is installed.

The utility model has the advantages that: can absorb the energy of chaufeur crash direction dish by pressure spring, whole energy absorbing process continuity is good, and chaufeur can not impacted because of the steering column crumple; In low speed collision, if steering column and body contact parts do not damage, this device can repeated usage, and maintenance cost is low; Owing to last column jecket and following column jecket are pegged graft by spline, therefore simple and reliable for structure in addition.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1.

Among the figure: following column jecket 1, annular boss 1a, outer tube 2, pressure spring 3, last column jecket 4, annular boss 4a, fixed support 5, end cap 6, bearing circle 7.

The specific embodiment

As shown in the figure, the utility model has an outer tube 2, be provided with the fixed support 5 affixed at outer tube 2 outer walls with vehicle body, be fitted with column jecket 4 and following column jecket 1 respectively at outer tube 2 two ends, be fixed with end cap 6 respectively at outer tube 2 two ends, described column jecket 4 tops of going up are drawn by end cap 6 respectively with following column jecket 1 bottom, are positioned at outer tube 2 and are provided with annular boss 4a, 1a with end cap 6 adjacent regions at last column jecket 4 and following column jecket 1, and annular boss 4a, 1a are stuck on the cooresponding end cap 6.Last column jecket 4 bottoms are connected by spline with following column jecket 1 top, and to go up column jecket 4 be stepped, between the end face of the ladder of last column jecket 4 and the following column jecket 1 relative with this ladder pressure spring 3 are installed.

During installation, outer tube 2 is fixed on the vehicle body by fixed support 5, will descends column jecket 1 lower end to be connected with vehicle steering mechanism, bearing circle 7 is installed in the upper end of column jecket 4.When crashing, chaufeur strikes on the bearing circle 7, and pressure spring 3 is subjected to column jecket 4 and 1 extruding of following column jecket and compresses, and the energy that can absorptions clashes into of pressure spring 3 like this alleviates the degree that is hurt of chaufeur.

Claims (1)

1, a kind of energy-absorbing steering tube column device, comprise outer tube, on outer tube, be provided with fixed support, column jecket and following column jecket on the outer tube two ends are fitted with respectively, it is characterized in that: described upward column jecket is stepped, last column jecket is connected by spline with following column jecket, between the ladder of last column jecket and the lower prop pipe end face relative with this ladder pressure spring is installed.

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