CN216943253U - Intermediate shaft assembly, steering system and vehicle - Google Patents

Abstract

The utility model discloses an intermediate shaft assembly, a steering system and a vehicle, wherein the intermediate shaft assembly is used for connecting a steering column and a steering gear and comprises an intermediate shaft, a male shaft and a female shaft, the lower end of the female shaft is in transmission connection with the upper end of the male shaft, the upper end of the female shaft is connected with an output shaft of the steering column through a first joint fork, a cross shaft and a second joint fork, the lower end of the intermediate shaft is connected with an input shaft of the steering gear through a fifth joint fork, a cross shaft and a sixth joint fork, and the upper end of the intermediate shaft is connected with the lower end of the male shaft through a third joint fork, a cross shaft and a fourth joint fork. According to the technical scheme, the steering gear can be arranged behind the power assembly through the intermediate shaft component under the condition that the steering gear cannot be arranged in front of the power assembly.

Description

Intermediate shaft assembly, steering system and vehicle

Technical Field

The utility model relates to the technical field of vehicle steering systems, in particular to an intermediate shaft assembly, a steering system and a vehicle.

Background

Passenger car or the longer motorcycle type of front overhang size, steering gear generally arranges in power assembly (or power motor) X forward, and the jackshaft structure generally designs into two segmentations, and two jackshafts become one set of a steering system through two universal joint shafts and four sections yoke with steering column and steering gear promptly. Aiming at the problem that the front overhang size is short, the steering gear has no space in the forward direction of a power assembly (or a power motor) X and can only be arranged in the backward direction of the X, and the connection between the steering column and the steering gear cannot be realized by a two-section type intermediate shaft structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a middle shaft assembly, aiming at realizing that a steering gear is arranged behind a power assembly through the middle shaft assembly under the condition that the steering gear cannot be arranged in front of the power assembly aiming at a vehicle type with a short front overhang size.

To achieve the above object, the present invention provides an intermediate shaft assembly for connecting a steering column and a steering gear, comprising:

an intermediate shaft;

a male shaft; and

the lower end of the female shaft is in transmission connection with the upper end of the male shaft, the upper end of the female shaft is connected with an output shaft of a steering column through a first joint fork, a cross shaft and a second joint fork, the lower end of the intermediate shaft is connected with an input shaft of a steering gear through a fifth joint fork, the cross shaft and a sixth joint fork, and the upper end of the intermediate shaft is connected with the lower end of the male shaft through a third joint fork, the cross shaft and a fourth joint fork.

Preferably, the middle shaft assembly further comprises:

the bearing is fixed on the intermediate shaft, and the bearing support is used for being connected with a vehicle body.

Preferably, the bearing is ball bearing, bearing holder includes installation department, fixed part, ball bearing inboard with the jackshaft is connected, and the outside is fixed in the installation department, the fixed part is connected with the automobile body.

Preferably, the upper end of public axle is equipped with external splines, the lower extreme of female axle is equipped with internal splines and dustproof construction, dustproof construction includes dust cover and sealing washer, the upper end of public axle with the lower extreme of female axle passes through external splines and internal splines and connects, the dust cover is located the upper end department of public axle, the sealing washer is arranged in the dust cover and with the sealed cooperation of the upper end of public axle.

Preferably, the lower extreme of public axle is equipped with external splines, the third pitch is equipped with internal splines, the lower extreme of public axle with the third pitch cooperatees through external splines and internal splines, and be in the terminal surface of the lower extreme of public axle is equipped with the locating part, the locating part is used for restricting the public axle with the relative motion of third pitch fork.

Preferably, the upper end of the intermediate shaft is provided with a limiting part, the fourth section of fork is provided with a positioning part corresponding to the limiting part, and the upper end of the intermediate shaft and the fourth section of fork are matched with each other through the limiting part and the positioning part and are fastened and connected through a fastening piece.

Preferably, the lower end of the intermediate shaft is provided with an external spline, the fifth yoke is provided with an internal spline, the lower end of the intermediate shaft and the fifth yoke are matched through the external spline and the internal spline, and a stop member is arranged on the end surface of the lower end of the intermediate shaft and used for limiting the relative movement of the intermediate shaft and the fifth yoke.

Preferably, a blocking portion is arranged at an inner spline of the sixth yoke and used for being installed in a matched mode with an input shaft of the steering gear, and the inner spline of the sixth yoke is matched with an outer spline of the input shaft end of the steering gear.

The utility model also provides a steering system, which comprises a steering wheel, a steering column and the middle shaft assembly; the first section of fork is connected with an output shaft of a steering column and fixed on the steering column, the steering column is installed on an instrument desk pipe beam, and the sixth section of fork is connected with an input shaft of a steering gear.

The utility model also provides a vehicle comprising the intermediate axle assembly.

The technical scheme of the utility model adopts the intermediate shaft, the male shaft and the female shaft; the lower end of the female shaft is in transmission connection with the upper end of the male shaft, the upper end of the female shaft is connected with an output shaft of a steering column through a first joint fork, a cross shaft and a second joint fork, the lower end of the intermediate shaft is connected with an input shaft of a steering gear through a fifth joint fork, the cross shaft and a sixth joint fork, and the upper end of the intermediate shaft is connected with the lower end of the male shaft through a third joint fork, the cross shaft and a fourth joint fork. The middle shaft, the male shaft and the female shaft are connected with the steering column and the steering gear through three cross shafts and six joint forks to form a set of complete steering system, and free adjustment in four directions can be realized through the three cross shafts and the six joint forks; and because a section of intermediate shaft is added on the basis of the male shaft and the female shaft and is connected through the cross shaft, the arrangement space of a joint fork connected with the steering gear is enlarged, and the feasibility of rear arrangement of the steering gear is realized.

Drawings

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

FIG. 1 is a schematic structural view of an embodiment of a countershaft assembly according to the present invention;

FIG. 2 is a schematic structural view of the intermediate shaft of FIG. 1;

FIG. 3 is a schematic structural view of the male shaft of FIG. 1;

FIG. 4 is a schematic structural view of the female shaft of FIG. 1;

FIG. 5 is a schematic view of the bearing and bearing support of FIG. 1;

FIG. 6 is a schematic structural view of the first, third and fifth yokes of FIG. 1;

FIG. 7 is a schematic structural view of the second yoke of FIG. 1;

FIG. 8 is a schematic structural view of the fourth yoke of FIG. 1;

fig. 9 is a schematic structural view of the sixth yoke in fig. 1.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Passenger car or the longer motorcycle type of front overhang size, the steering gear generally arranges in power assembly (or power motor) X forward, and jackshaft structure generally designs into two segmentations, and two jackshafts become one set of a steering system through two crosses and four segmentations yoke with steering column and steering gear promptly. Aiming at the problem that the front overhang size is short, the steering gear has no space in the forward direction of a power assembly (or a power motor) X and can only be arranged in the backward direction of the X, and the connection between the steering column and the steering gear cannot be realized by a two-section type intermediate shaft structure.

For the purpose, aiming at the vehicle type with short front overhang size and no space for arranging a steering gear in the front of a power assembly (or a power motor) X, the utility model provides an intermediate shaft assembly for connecting the steering gear and a steering column arranged at the rear of the vehicle type.

Referring to fig. 1 to 9, in the embodiment of the present invention, as shown in fig. 1, the intermediate shaft assembly 10 includes an intermediate shaft 1, a male shaft 2, and a female shaft 3, wherein a lower end of the female shaft 3 is in transmission connection with an upper end of the male shaft 2, an upper end of the female shaft 3 is connected with an output shaft of a steering column through a first yoke 41, a cross 5, and a second yoke 42, a lower end of the intermediate shaft 1 is connected with an input shaft of a steering gear through a fifth yoke 45, a cross 5, and a sixth yoke 46, and an upper end of the intermediate shaft 1 is connected with a lower end of the male shaft 2 through a fourth yoke 44, a cross 5, and a third yoke 43.

The lower end of the female shaft 3 is provided with an internal spline, the upper end of the male shaft 2 is provided with an external spline, the upper end of the male shaft 2 is inserted into the lower end of the female shaft 3, and the internal spline and the external spline are matched to realize the transmission connection of the male shaft 2 and the female shaft 3; in other embodiments, the male shaft 2 and the female shaft 3 can be connected in other transmission ways, such as by a pin connection. The first yoke 41, the second yoke 42, the third yoke 43, the fourth yoke 44, the fifth yoke 45, and the sixth yoke 46 may be the same or may be selected differently as needed.

The cross shaft type rigid universal joint consists of a universal joint fork, a cross shaft 5, a bearing and the like. The working principle is as follows: one of the yokes connected with the cross shaft 5 is rotated to drive the other yoke to rotate through the cross shaft 5, and can swing in any direction around the center of the cross shaft 5. The cross shaft is a machine part for realizing variable-angle power transmission, is used for changing the position of the direction of a transmission axis and is equivalent to a joint part.

According to the technical scheme, a three-section type middle shaft assembly 10 is adopted, namely a middle shaft 1, a male shaft 2 and a female shaft 3 are connected with a steering column and a steering gear through three cross shafts 5 and six yokes to form a complete steering system, and free adjustment in four directions can be realized through the three cross shafts 5 and the six yokes; and because a section of intermediate shaft 1 is added and connected through the cross shaft 5, the arrangement space of a joint fork connected with the steering gear is enlarged, and the feasibility of rear arrangement of the steering gear is realized.

Further, referring to fig. 1 and 5, in the present embodiment, the intermediate shaft assembly 10 further includes a bearing 6, and a bearing bracket 7 connected to the bearing 6, wherein the bearing 6 is fixed to the intermediate shaft 1, and the bearing bracket 7 is used for being connected to a vehicle body.

In order to avoid the movement of the intermediate shaft 1, a bearing 6 is arranged on the intermediate shaft 1 and is fixed on a vehicle body through a bearing bracket 7, so that the axial movement of the intermediate shaft 1 is limited, and the axial restraint is increased.

Specifically, the bearing 6 is a ball bearing, the bearing support 7 includes a mounting portion 71 and a mounting portion 72, the inner side of the ball bearing is connected with the intermediate shaft 1, the outer side of the ball bearing is fixed to the mounting portion 71, and the mounting portion 72 is connected with a vehicle body.

In this embodiment, for the smooth rotation of the intermediate shaft 1, the bearing 6 is a ball bearing, which is a kind of rolling bearing, the ball bearing is installed between the inner steel ring and the outer steel ring and can bear a large load, the mounting portion 71 of the bearing bracket 7 clamps the ball bearing and is fastened by bolts, the mounting portion 72 is connected with the mounting portion 71, and the mounting portion 72 is disposed in the fastener mounting hole and fixed to the vehicle body by a fastener.

Further, referring to fig. 1, 4 and 7, the upper end of public axle 2 is equipped with external splines, the lower extreme of female axle 3 is equipped with internal splines and dustproof construction 31, dustproof construction 31 includes dust cover and sealing washer, the upper end of public axle 2 with the lower extreme of female axle 3 passes through external splines and internal splines and is connected, the dust cover is located the upper end department of public axle 2, the sealing washer is arranged in the dust cover and with the sealed cooperation of the upper end of public axle 2.

The upper end of female axle 3 is connected with second section fork 42, and the quad slit through the upper end of female axle 3 and second section fork 42 restricts radial rotation, and has phi 8.5's bolt hole on the second section fork 42, adopts M8's bolt fastening during the assembly.

In order to avoid the problem that two shafts fall off and dust enters the inner spline area in the adjusting process, the upper end of the male shaft 2 and the lower end of the female shaft 3 are matched through splines and can slide axially relative to each other, and the problem of limitation of assembly space caused by the manufacturing tolerance and arrangement space influence of peripheral parts during assembly can be solved. Meanwhile, the lower end of the female shaft 3 is provided with a dust cover and an O-shaped sealing ring, and the sealing ring fills a gap between the dust cover and the periphery of the male shaft 2, so that dust is prevented from entering the internal spline.

Further, referring to fig. 1, fig. 3 and fig. 6, the lower end of the male shaft 2 is provided with an external spline, the third section fork 43 is provided with an internal spline, the lower end of the male shaft 2 and the third section fork 43 are matched with each other through the external spline and the internal spline, and a limiting member is arranged on the end surface of the lower end of the male shaft 2, and the limiting member is used for limiting the relative movement between the male shaft 2 and the third section fork 43.

The lower end of the male shaft 2 is connected with the third fork 43 by a spline, so that the installation and maintenance are convenient; the limiting piece is welded on the end face of the lower end of the male shaft 2 and is oppositely arranged on the end face of the lower end of the male shaft 2, and the limiting piece can limit the axial movement of the lower end of the male shaft 2;

further, referring to fig. 2, 8 and 9, the upper end of the intermediate shaft 1 is provided with a limiting portion 11, the fourth yoke 44 is provided with a positioning portion corresponding to the limiting portion 11, and the upper end of the intermediate shaft 1 and the fourth yoke 44 are matched with each other through the limiting portion 11 and the positioning portion and are fastened and connected through a fastening member.

The lower end of the intermediate shaft 1 is provided with an external spline, the fifth yoke 45 is provided with an internal spline, the lower end of the intermediate shaft 1 and the fifth yoke 45 are matched through the external spline and the internal spline, the end surface of the lower end of the intermediate shaft 1 is provided with a stop piece 12, and the stop piece 12 is used for limiting the relative movement of the intermediate shaft 1 and the fifth yoke 45.

The limiting part 11 at the upper end of the intermediate shaft 1 is limited by the missing teeth on the small plane, so that the reverse assembly is avoided when the intermediate shaft is connected with the fourth section fork 44, and the working time is saved; the lower end of the intermediate shaft 1 is connected with a fifth yoke 45 through a spline, a stop piece 12 is welded on the lower end face of the intermediate shaft 1, and the stop piece 12 can limit axial movement of the intermediate shaft 1.

Further, a blocking portion is arranged at the position of the inner spline of the sixth yoke 46 and used for being matched with the mounting portion 71 of the input shaft of the steering gear, and the inner spline of the sixth yoke 46 is matched with the outer spline of the input shaft end of the steering gear.

The sixth yoke 46 is connected with the input shaft of the steering gear, the spline parameter of the sixth yoke 46 is consistent with the spline parameter of the input shaft end of the steering gear, and the main parameter of the spline is as follows: modulus m, tooth number z and reference circle pressure angle, and the spline of sixth section fork 46 has the spacing design of scarce tooth, and the face dress that sixth section fork 46 was anti-when the purpose was connected with the steering gear input shaft to the sixth section fork 46 is prevented, avoids doing over again, practices thrift man-hour.

The utility model further provides a steering system, which comprises a steering wheel, a steering column and an intermediate shaft assembly 10, the specific structure of the intermediate shaft assembly 10 refers to the above embodiments, and as the steering system adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. The first yoke 41 is connected with an output shaft of a steering column and fixed on the steering column, the steering column is mounted on an instrument desk pipe beam, the sixth yoke 46 is connected with an input shaft of a steering gear, and the output shaft of the steering gear appropriately converts steering torque and steering angle from a steering wheel (mainly reduces speed and increases torque) and outputs the steering torque and the steering angle to a steering linkage mechanism, so that the automobile is steered.

The present invention also contemplates a vehicle that includes the intermediate axle assembly 10. The specific structure of the intermediate shaft assembly 10 refers to the above embodiments, and since the vehicle adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An intermediate shaft assembly for connecting a steering column to a steering gear, comprising:

an intermediate shaft;

a male shaft; and

the lower end of the female shaft is in transmission connection with the upper end of the male shaft, the upper end of the female shaft is connected with an output shaft of a steering column through a first joint fork, a cross shaft and a second joint fork, the lower end of the intermediate shaft is connected with an input shaft of a steering gear through a fifth joint fork, the cross shaft and a sixth joint fork, and the upper end of the intermediate shaft is connected with the lower end of the male shaft through a third joint fork, the cross shaft and a fourth joint fork.

2. The countershaft assembly of claim 1, further comprising:

the bearing is fixed on the intermediate shaft, and the bearing support is used for being connected with a vehicle body.

3. The countershaft assembly of claim 2 wherein said bearing is a ball bearing and said bearing support includes a mounting portion and a securing portion, said ball bearing being connected on an inner side to said countershaft and on an outer side to said mounting portion, said securing portion being connected to a vehicle body.

4. The countershaft assembly of claim 1, wherein the male shaft has an outer spline on an upper end thereof and the female shaft has an inner spline on a lower end thereof and a dust guard including a dust boot and a seal, the upper end of the male shaft and the lower end of the female shaft being connected by the outer spline and the inner spline, the dust boot being disposed over the upper end of the male shaft and the seal being disposed within the dust boot and in sealing engagement with the upper end of the male shaft.

5. The countershaft assembly of claim 1 wherein said male shaft has external splines on a lower end thereof, said third yoke has internal splines on a lower end thereof, said lower end of said male shaft and said third yoke mate via said external and internal splines, and a stop member is disposed on an end surface of said lower end of said male shaft for limiting relative movement of said male shaft and said third yoke.

6. The countershaft assembly of claim 1, wherein the upper end of the countershaft is provided with a limiting portion, the fourth yoke is provided with a positioning portion corresponding to the limiting portion, and the upper end of the countershaft and the fourth yoke are engaged by the limiting portion and the positioning portion and are fastened together by a fastening member.

7. The countershaft assembly of claim 6 wherein said lower end of said countershaft is provided with external splines and said fifth yoke is provided with internal splines, said lower end of said countershaft and said fifth yoke being engaged by said external and internal splines, and a stop is provided on an end surface of said lower end of said countershaft for limiting relative movement of said countershaft and said fifth yoke.

8. The countershaft assembly of claim 1, wherein the sixth yoke has stops at the internal splines for mating engagement with the input shaft of the steering gear and the internal splines of the sixth yoke mate with the external splines of the input shaft end of the steering gear.

9. A steering system, comprising: a steering wheel, a steering column, and an intermediate shaft assembly according to any one of claims 1 to 8; the first section of fork is connected with an output shaft of a steering column and fixed on the steering column, the steering column is installed on an instrument desk pipe beam, and the sixth section of fork is connected with an input shaft of a steering gear.

10. A vehicle, characterized by comprising: an intermediate shaft assembly as claimed in any one of claims 1 to 8.

Images