CN217260257U - Vibration-damping energy-absorbing steering intermediate shaft with high torsional rigidity - Google Patents

Abstract

The utility model discloses a damping energy-absorbing that torsional rigidity is big turns to jackshaft, including outer section fork, interior section fork, integral key shaft and spline pipe, the hole of interior section fork is the dysmorphism hole that the circumference has a plurality of recesses, integral key shaft or spline pipe have a plurality of protruding stupefied with the link circumference of interior section fork, vulcanize through vulcanized rubber and will have the integral key shaft or spline pipe of a plurality of protruding stupefied ends and the hole of dysmorphism mutually support and make integral key shaft or spline pipe and interior section fork link into an integrated entity the utility model discloses can reduce promptly and jolt or bump produced noise and shake because of the road surface, also guarantee to turn to jackshaft torsional rigidity and bear the moment of torsion, improve travelling comfort and the security of driving.

Description

Vibration-damping energy-absorbing steering intermediate shaft with high torsional rigidity

Technical Field

The utility model relates to a turn to the jackshaft field, concretely relates to damping energy-absorbing that torsional rigidity is big turns to jackshaft.

Background

The steering intermediate shaft is a transmission mechanism for connecting the steering column and the steering gear. The existing steering intermediate shaft comprises two outer joint forks, two inner joint forks, a spline shaft and a spline pipe, wherein the outer joint forks are connected with the inner joint forks through mutual matching of a needle bearing and a cross shaft, the inner joint forks are connected with one end of the spline shaft in an interference press-in riveting mode, the other end of the spline shaft is connected with one end of the spline pipe through a spline, the other end of the spline pipe is connected with the inner joint forks in an interference press-in riveting mode, the inner joint forks are connected with the outer joint forks through mutual matching of the needle bearing and the cross shaft, and the outer joint forks are in rigid connection. When the road surface bumps or collides, the rigid connection is easy to generate vibration and abnormal sound.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, and provide a damping energy-absorbing that torsional rigidity is big and turn to the jackshaft, should turn to the jackshaft and can jolt or bump produced noise and shake because of the road surface in order to reduce, also guaranteed to turn to the torsional rigidity of jackshaft and bear the moment of torsion, improved the travelling comfort and the security of driving.

In order to realize the above-mentioned purpose, the utility model provides a damping energy-absorbing that torsional rigidity is big turns to jackshaft, including outer section fork, interior section fork, integral key shaft and spline pipe, the hole of interior section fork is that the circumference has the dysmorphism hole of a plurality of recesses, integral key shaft or spline pipe have a plurality of protruding stupefied with the link circumference of interior section fork, vulcanize through vulcanized rubber and will have integral key shaft or spline pipe and the special-shaped hole of a plurality of protruding stupefied ends mutually support and make integral key shaft or spline pipe and interior section fork link into an integrated entity.

As a further optimization, the circumference of the spline pipe far away from the spline shaft end is provided with a plurality of convex ridges or the circumference of the spline shaft far away from the spline pipe end is provided with a plurality of convex ridges, the inner pitch fork inner hole connected with the spline pipe or the spline shaft end is a special-shaped hole with a plurality of grooves on the circumference, and the spline pipe or the spline shaft with a plurality of convex ridge ends and the special-shaped hole are mutually matched through vulcanized rubber so that the spline pipe or the spline shaft and the inner pitch fork are connected into a whole.

And as further optimization, the inner pitch fork connected with the spline shaft or the spline pipe is pressed and riveted with a pair of pressing and riveting points.

As a further optimization, the special-shaped hole is in the shape of a hexagon star, and the cross section of the joint of the spline shaft or the spline pipe and the inner pitch fork is the hexagon star matched with the special-shaped hole.

The utility model has the advantages and the beneficial effect

1. The utility model discloses the hole of well inner pitch fork is that the circumference has the dysmorphism hole of a plurality of recesses, the one end circumference of integral key shaft and/or spline pipe has a plurality ofly protruding stupefied with dysmorphism hole matched with, and rethread vulcanized rubber makes the inner pitch fork link to each other with integral key shaft and/or spline pipe, can guarantee to turn to jackshaft torsional rigidity, improves and bears the moment of torsion and turns to the sensitivity.

2. The utility model discloses further be connected through vulcanized rubber vulcanization between festival fork and the integral key shaft and/or between spline pipe and the interior festival fork, can reduce because of the road surface jolts or produced noise of bump and shake, improved the travelling comfort of driving.

3. The utility model discloses the pressure is riveted on being connected with the inner joint fork of spline pipe and/or integral key shaft and is had the double riveting point of pressure, can prevent to press double riveting point that spline pipe and/or spline shaft from pulling out the inner joint fork axial, satisfy and turn to the requirement that the jackshaft axial was pulled out.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic diagram of the overall structure provided by the embodiment of the present invention;

figure 2 is a front view of figure 1 of the present invention;

figure 3 is a cross-sectional view of the present invention from figure 2;

FIG. 4 is a schematic structural view of the inner yoke of the present invention;

fig. 5 is a schematic structural view of the connection end of the spline shaft and the inner fork of the present invention.

As shown in the figure mark: the special-shaped steel pipe comprises an outer joint fork 1, an inner joint fork 2, a groove 2-1, a special-shaped hole 2-2, a spline shaft 3, a convex edge 3-1, vulcanized rubber 4, a butt-pressure double-riveting point 5 and a needle bearing 6.

Detailed Description

The utility model flexibly connects the inner yoke and the spline shaft/spline tube through vulcanized rubber, avoids noise and vibration caused by vibration or impact due to rigid connection, in addition, the utility model adopts vulcanized rubber as the flexible connection between the inner yoke and the spline shaft/spline tube and also has been tested by a plurality of different processes, and the rubber is directly pressed between the inner yoke and the spline shaft/spline tube in an interference fit way, but the rubber is softer and is difficult to assemble with the inner yoke and the spline shaft/spline tube in the pressing process, even if the rubber can be pressed together, the rubber is also harder and has high rigidity, which does not play the roles of noise reduction and energy absorption, if rubber is interference fit between the yoke and the spline shaft/tube, the bearing torque is poor, it is ultimately decided to use vulcanization of the vulcanized rubber to connect the inner yoke to the spline tube or/and the spline shaft.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 3, a vibration-damping and energy-absorbing steering intermediate shaft with high torsional rigidity comprises an outer yoke 1, an inner yoke 2, a spline shaft 3 and a spline tube, wherein the outer yoke 1 is connected with the inner yoke 2 through the mutual fit of a needle bearing 6 and a cross shaft, an inner hole of the inner yoke 2 is a special-shaped hole 2-2 with a plurality of grooves 2-1 on the circumference, the shape of the special-shaped hole 2-2 is a hexagonal star (as shown in fig. 4), the circumference of the connecting end of the spline shaft 3 and the inner yoke 2 is provided with a plurality of ridges 3-1 (as shown in fig. 5), the inner yoke 2 and the spline shaft 3 are connected through the mutual fit of the ridges 3-1 and the special-shaped hole 2-2, so that a part of torque can be borne even if the inner yoke 2 and the spline shaft 3 are relatively loosened, the connecting part of the inner yoke 2 and the spline shaft 3 is further vulcanized through vulcanized rubber 4, in order to fill up the gap between interior festival fork 2 and the integral key shaft 3, vulcanized rubber 4 can reduce because of noise and shake that vibration or striking produced, has improved the travelling comfort of driving, and the interior festival fork 2 that is connected with integral key shaft 3 goes up the pressure riveting has the pair of riveting point 5 of pressure, pair of riveting point 5 of pressure can prevent integral key shaft 3 and interior festival fork 2 axial pull-off, satisfies the requirement that turns to the jackshaft axial pull-off.

The spline shaft 3 is connected with one end of the spline pipe through a spline, the circumference of the other end of the spline pipe is provided with a plurality of convex edges, the cross section of the spline pipe with the plurality of convex edges is in a hexagonal star shape, the inner hole of the inner joint fork connected with one end of the spline pipe is a special-shaped hole with a plurality of grooves on the circumference, the special-shaped hole is in a hexagonal star shape, the spline pipe is connected with the inner joint fork through the mutual matching of the special-shaped hole and the convex edges, thus the spline pipe can bear a part of torque even if the inner joint fork and the spline pipe are relatively loosened, the joint of the spline pipe and the inner joint fork is further connected through vulcanized rubber sulfide to fill up the gap between the spline pipe and the inner joint fork, the inner joint fork connected with the spline pipe is pressed and riveted with a double pressing riveting point, the double pressing riveting point can prevent the spline pipe and the inner joint fork from axially pulling off, and the inner joint fork is connected with the outer joint fork through the mutual matching of a needle bearing and a cross shaft, through the connection mode, the effects of vibration reduction and energy absorption can be achieved, the torsional rigidity of the steering intermediate shaft can be ensured, and the bearing torque and the steering sensitivity are improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (4)

1. The utility model provides a damping energy-absorbing that torsional rigidity is big turns to jackshaft, includes outer section fork (1), interior section fork (2), integral key shaft (3) and spline pipe, its characterized in that: the inner hole of the inner section fork (2) is a special-shaped hole (2-2) with a plurality of grooves (2-1) on the circumference, the circumference of the connecting end of the spline shaft (3) or the spline pipe and the inner section fork (2) is provided with a plurality of convex edges (3-1), and the spline shaft (3) or the spline pipe with a plurality of convex edge ends is mutually matched with the special-shaped hole (2-2) through vulcanized rubber (4) so that the spline shaft (3) or the spline pipe is connected with the inner section fork (2) into a whole.

2. The high torsional stiffness shock absorbing and energy absorbing steering countershaft according to claim 1 wherein: the circumference that spline pipe kept away from spline shaft (3) one end has a plurality of protruding stupexes or the circumference that spline shaft kept away from spline pipe one end has a plurality of protruding stupexes, and the inner joint fork hole that is connected with spline pipe or spline shaft one end is the dysmorphism hole that the circumference has a plurality of recesses, and through vulcanized rubber vulcanization with spline pipe or spline shaft and the dysmorphism hole mutually support that have a plurality of protruding stupexes end and make spline pipe or spline shaft and inner joint fork link into an organic whole.

3. A high torsional rigidity vibration damping and energy absorbing steering intermediate shaft according to claim 1 or 2, wherein: the inner pitch fork connected with the spline shaft or the spline pipe is pressed and riveted with a pair of pressing and riveting points (5).

4. A high torsional rigidity vibration damping and energy absorbing steering intermediate shaft according to claim 1 or 2, wherein: the special-shaped hole (2-2) is in the shape of a hexagon star, and the cross section of the joint of the spline shaft (3) or the spline pipe and the inner pitch fork (2) is the hexagon star matched with the special-shaped hole (2-2).

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