CN216761887U

CN216761887U - Noise-reducing and energy-absorbing structure for steering intermediate shaft

Info

Publication number: CN216761887U
Application number: CN202220228595.6U
Authority: CN
Inventors: 周裕; 王吉成; 王瑞; 张大亮
Original assignee: Jilin Shibao Machinery Manufacturing Co ltd
Current assignee: Jilin Shibao Machinery Manufacturing Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-17
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a noise-reducing and energy-absorbing structure for a steering intermediate shaft, which comprises a lengthened spline shaft, a spline connecting plate, a damping pad, an inner fork and an elastic sheet, wherein the lengthened spline shaft is connected with the spline connecting plate in an interference manner, the spline connecting plate is connected with the damping pad and the elastic sheet through the mutual matching of a bolt B and a nut B, bayonets are arranged on two sides of the elastic sheet, the inner fork is arranged in the bayonets, the inner fork is connected with the damping pad through the mutual matching of a bolt A and a nut A, and at the moment, a lengthened shaft of the lengthened spline shaft penetrates through the spline connecting plate, the damping pad and the elastic sheet to be inserted into a through hole of the inner fork. The steering column provided by the utility model replaces the original mode that the inner yoke at one end of the steering column is directly connected with the outer yoke, so that the generation of noise and vibration is reduced in vibration and impact, and the comfort of a driver is improved.

Description

Noise-reducing and energy-absorbing structure for steering intermediate shaft

Technical Field

The utility model belongs to the technical field of steering intermediate shafts, and particularly relates to a noise-reducing and energy-absorbing structure for a steering intermediate shaft.

Background

The steering intermediate shaft is a transmission mechanism for connecting the steering column and the steering gear. When the steering column rotates, the steering intermediate shaft can stably and reliably transmit torque and a steering angle.

The existing steering intermediate shaft is rigidly connected and comprises two outer joint forks, two inner joint forks, a spline shaft and a spline pipe, the outer yoke is connected with the inner yoke through the mutual matching of the needle bearing and the cross shaft, the inner yoke is 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 a spline tube through a spline, the other end of the spline tube is connected with an inner yoke in an interference press-in riveting mode, the inner yoke is connected with an outer yoke through the mutual matching of a needle bearing and a cross shaft, the rigidly connected steering intermediate shaft generates noise and vibration when vibrating and impacting, easily causes fatigue of a driver, therefore, how to reduce noise and vibration in vibration and impact after ensuring that the inner yoke and the outer yoke can be reliably connected is a technical problem which needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, and provides a noise-reducing and energy-absorbing structure for a steering intermediate shaft, which replaces an inner yoke at one end of an original steering column to be directly connected with an outer yoke, so that the generation of noise and vibration is reduced during vibration and impact, and the comfort of a driver is improved.

In order to achieve the purpose, the utility model provides a noise-reducing and energy-absorbing structure for a steering intermediate shaft, which comprises a lengthened spline shaft, a spline connecting plate, a damping pad, an inner fork and an elastic sheet, wherein the lengthened spline shaft is in interference connection with the spline connecting plate, the spline connecting plate is connected with the damping pad and the elastic sheet through mutual matching of a bolt B and a nut B, bayonets are arranged on two sides of the elastic sheet, the inner fork is arranged in the bayonets, the inner fork is connected with the damping pad through mutual matching of a bolt A and a nut A, and at the moment, a lengthened shaft of the lengthened spline shaft penetrates through the spline connecting plate, the damping pad and the elastic sheet to be inserted into a through hole of the inner fork.

And as further optimization, a rubber ring is arranged between the lengthened shaft of the lengthened spline shaft and the through hole of the inner fork.

And as a further optimization, the joint of the lengthened spline shaft and the spline connecting plate is provided with a pair of pressing riveting points.

As a further optimization, the middle part of the spline connecting plate is provided with a spline hole for interference connection with the lengthened spline shaft, two sides of the spline hole are provided with first connecting holes, and the bolt B passes through the elastic sheet, the damping pad and the first connecting holes and is connected with the nut B.

As a further optimization, the middle of the damping pad is provided with a first middle hole, the lengthened spline shaft penetrates through the damping pad through the first middle hole, four connecting parts are arranged around the first middle hole, two corresponding connecting parts are protruded towards the inward fork direction, the other two corresponding connecting parts are protruded towards the spline connecting plate direction, and the bolt a and the bolt B penetrate through the damping pad through the connecting parts.

As a further optimization, the elastic sheet comprises an elastic sheet body, a second middle hole is formed in the middle of the elastic sheet body, the lengthened spline shaft penetrates through the elastic sheet through the second middle hole, second connecting holes are formed in two sides of the second middle hole, the bolt B penetrates through the elastic sheet through the second connecting hole, two clamping jaws turned upwards are formed in two sides of the elastic sheet body, and a bayonet is formed between the two clamping jaws on each side.

As a further optimization, the inner fork comprises an inner fork body, cross-shaped shaft holes are correspondingly formed in the side walls of the two sides of the inner fork body, a through hole is formed in the middle of the bottom of the inner fork body, support arms are arranged on the two sides of the bottom of the inner fork body and clamped in the clamping openings, each support arm is provided with a third connecting hole, the bolt A penetrates through the inner fork through the third connecting holes, and reinforcing ribs are arranged at the connecting position of the inner fork body and the support arms.

Advantages and advantageous effects of the utility model

1. The steering column replaces an inner yoke at one end of the original steering column, torque is transmitted to the inner yoke through the outer yoke, the inner yoke is transmitted to the damping pad through the bolt A and the nut A, the damping pad is transmitted to the spline connecting plate through the bolt B and the nut B, the spline connecting plate transmits the torque to the lengthened spline shaft, and then the torque transmission process is completed.

2. According to the utility model, the elastic sheet, the damping pad and the spline connecting plate are connected through the mutual matching of the bolt B and the nut B, and when the damping pad fails or the transmission torque is too large, the elastic sheet participates in the work to transmit the torque, so that the driving road feel and the driving safety are ensured.

3. According to the utility model, the rubber ring is arranged between the lengthened shaft of the lengthened spline shaft and the through hole of the inner fork, and the rubber ring can prevent the lengthened shaft and the inner fork from rubbing after the damping pad deforms, so that noise is prevented from being generated.

4. The lengthened spline shaft and the spline connecting plate are further fixed through the double-riveting point, so that the lengthened spline shaft can be prevented from moving along the axial direction of the spline connecting plate.

5. The lengthened spline shaft replaces a spline shaft in the original steering intermediate shaft, and the lengthened spline shaft penetrates through the spline connecting plate, the damping pad and the elastic sheet to be inserted into the rubber ring of the through hole of the inner fork, so that the coaxiality of the lengthened spline shaft and the inner fork is ensured, the non-uniformity of rotation of the steering wheel is reduced, and the driving comfort is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art that 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 an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1 of the present invention;

FIG. 3 is a schematic view of the overall construction of the spline connecting plate of the present invention;

FIG. 4 is a schematic structural view of the damping pad of the present invention;

FIG. 5 is a schematic structural view of the spring plate of the present invention;

FIG. 6 is a schematic structural view of the inner fork of the present invention;

FIG. 7 is a schematic view of the present invention after attachment to an outer yoke.

Reference numerals: the lengthened spline shaft 1, a lengthened shaft 1-1, a spline connecting plate 2, a spline hole 2-1, a first connecting hole 2-2, a bolt A3, a damping pad 4, a connecting part 4-1, a first middle hole 4-2, an inner fork 5, an inner fork body 5-1, a through hole 5-2, a support arm 5-3, a third connecting hole 5-4, a reinforcing rib 5-5, a cross shaft hole 5-6, a nut A6, an elastic sheet 7, an elastic sheet body 7-1, a second connecting hole 7-2, a second middle hole 7-3, a clamping jaw 7-4, a clamping opening 7-5, a bolt B8, a nut B9, a rubber ring 10, a cross shaft 11 and an outer pitch fork 12.

Detailed Description

The lengthened spline shaft is a lengthened spline shaft, one end of the spline shaft is provided with a lengthened shaft 1-1, and the lengthened shaft 1-1 penetrates through the spline connecting plate 2, the damping pad 4 and the elastic sheet 6 to be inserted into the rubber ring 10 of the through hole of the inner fork 5 during assembly, so that the coaxiality of the lengthened spline shaft 1 and the inner fork 5 is ensured.

The following detailed description of embodiments of the utility model refers to the accompanying drawings.

As shown in fig. 1-3, a noise-reducing and energy-absorbing structure for a steering intermediate shaft comprises a lengthened spline shaft 1, a spline connecting plate 2, a damping pad 4, an inner fork 5 and a spring plate 7, wherein one end of the lengthened spline shaft 1 is provided with a lengthened shaft 1-1, the middle of the spline connecting plate 2 is provided with a spline hole 2-1, two sides of the spline hole 2-1 are provided with first connecting holes 2-2, the lengthened spline shaft 1 penetrates through the spline hole 2-1 to be connected to the spline connecting plate 2 in an interference manner, and a joint of the spline connecting plate 2 and the lengthened spline shaft 1 is provided with a double-riveting point in a pressing manner, so that the lengthened spline shaft 1 can be prevented from moving axially along the spline connecting plate 2, as shown in fig. 4, the middle of the damping pad 4 is provided with a first middle hole 4-2, four connecting portions 4-1 are arranged around the first middle hole 4-2, each connecting part 4-1 is provided with a through hole, two corresponding connecting parts 4-1 protrude towards the direction of the inner fork 5, the other two corresponding connecting parts 4-1 protrude towards the direction of the spline connecting plate 2, as shown in fig. 5, the spring plate 7 comprises a spring plate body 7-1, the middle of the spring plate body 7-1 is provided with a second middle hole 7-3, two sides of the second middle hole 7-3 are provided with second connecting holes 7-2, two sides of the spring plate body 7-1 are provided with two clamping jaws 7-4 turned upwards, a bayonet 7-5 is formed between the two clamping jaws 7-4 on each side, the bolt B8 sequentially penetrates through the second connecting hole 7-2 on the spring plate 7, the connecting part 4-1 on the damping pad 4 and the first connecting hole 2-2 on the spline connecting plate 2 and is screwed up through a nut B9, an inner fork 5 is arranged on one side, far away from the damping pad 4, of the elastic sheet 7, as shown in fig. 6, the inner fork 5 comprises an inner fork body 5-1, cross-shaped shaft holes 5-6 are correspondingly formed in the side walls of the two sides of the inner fork body 5-1, the inner fork is connected with an outer section fork 12 through the cross-shaped shaft holes 5-6, a through hole 5-2 is formed in the middle of the bottom of the inner fork body 5-1, a rubber ring 10 is arranged in the through hole 5-2, the rubber ring 10 can prevent the damping pad 4 from deforming to cause friction between the lengthened spline shaft 1 and the through hole 5-2, two sides of the bottom of the inner fork body 5-1 are provided with support arms 5-3, the positions of the support arms 5-3 correspond to the positions of the bayonets 7-5, each support arm is provided with a third connecting hole 5-4, and a joint of the inner fork body 5-1 and the support arms 5-3 is provided with reinforcing ribs 5-5, the bolt A3 sequentially penetrates through the connecting part 4-1 on the damping pad 4, the bayonet 7-5 on the elastic sheet 7 and the third connecting hole 5-4 on the inner fork 5 and is screwed up through the nut A6, at the moment, the lengthened shaft 1-1 of the lengthened spline shaft 1 sequentially penetrates through the first middle hole 4-2 on the damping pad 4 and the second middle hole 7-3 on the elastic sheet 7 and is inserted into the rubber ring 10 in the through hole 5-2, so that the coaxiality of the lengthened spline shaft 1 and the inner fork 5 is ensured, the rotation unevenness of the steering wheel is reduced, and the driving comfort is improved. The support arms 5-3 on two sides of the inner fork 5 are arranged in the bayonets 7-5 through the clamping jaws 7-4 on two sides, when the damping pad 4 fails or the transmission torque is too large, the support arms 5-3 can be clamped in the bayonets 7-5 of the elastic pieces 7, at the moment, the elastic pieces 7 participate in work to transmit the torque, reliable driving road feeling and driving safety are guaranteed, and finally the assembled noise-reducing and energy-absorbing structure is connected with the outer pitch fork 12 through the cross shaft 11.

Principle of operation

First, under the normal working condition

The moment of torsion is from outer festival fork 12 input, transmit the moment of torsion to interior fork 5 through cross 11, interior fork 5 transmits the moment of torsion to damping pad 4 through bolt A3 and nut A6, damping pad 4 rethread bolt B8 and nut B9 with the moment of torsion transmission to spline connection plate 2 and shell fragment 7 on, spline connection plate 2 transmits the moment of torsion to extension integral key shaft 1 on, and then accomplish the transmission torque process, in the moment of torsion transmission process, rubber materials's damping pad 4 participates in the work, realize absorbing the effect of high frequency low amplitude vibration through the deformation of damping pad 4.

Secondly, when the transmission torque of the damping cushion is overlarge or fails

The moment of torsion is input from outer festival fork 12, transmit the moment of torsion to interior fork 5 through cross 11, interior fork 5 transmits the moment of torsion to damping pad 4 through bolt A3 and nut A6, when the moment of torsion that damping pad 4 transmitted is too big or inefficacy, support arm 5-3 card of interior fork 5 is in bayonet 7-5 of shell fragment 7, and at this moment, shell fragment 7 participates in the work, and shell fragment 7 transmits the moment of torsion to spline connection plate 2, and spline connection plate 2 finally transmits the moment of torsion to extension integral key shaft 1, guarantees reliable driving road feel and the security of traveling.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; 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; and such modifications or substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a noise reduction energy-absorbing structure for turning to jackshaft which characterized in that: including extension integral key shaft (1), spline connection board (2), damping pad (4), interior fork (5) and shell fragment (7), the interference is connected with spline connection board (2) on extension integral key shaft (1), spline connection board (2) link to each other with damping pad (4) and shell fragment (7) through mutually supporting of bolt B (8) and nut B (9), the both sides of shell fragment (7) have bayonet socket (7-5), be equipped with interior fork (5) in bayonet socket (7-5), interior fork (5) link to each other with damping pad (4) through mutually supporting of bolt A (3) and nut A (6), and at this moment, extension axle (1-1) of extension integral key shaft (1) passes spline connection board (2), damping pad (4) and shell fragment (7) and inserts in through-hole (5-2) of interior fork (5).

2. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1, wherein: and a rubber ring (10) is arranged between the lengthened shaft (1-1) of the lengthened spline shaft (1) and the through hole (5-2) of the inner fork (5).

3. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1 or 2, characterized in that: and the joint of the lengthened spline shaft (1) and the spline connecting plate (2) is provided with a pair of pressing double riveting points.

4. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1 or 2, characterized in that: the middle of the spline connecting plate (2) is provided with a spline hole (2-1) which is used for being in interference connection with the lengthened spline shaft (1), two sides of the spline hole (2-1) are provided with first connecting holes (2-2), and the bolt B (8) penetrates through the elastic sheet (7), the damping pad (4) and the first connecting holes (2-2) to be connected with the nut B (9).

5. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1 or 2, characterized in that: the middle part of damping pad (4) has hole (4-2) in the middle of first, hole (4-2) pass damping pad (4) in the middle of extension integral key shaft (1) is first, hole (4-2) have four connecting portion (4-1) all around in the middle of first, wherein two corresponding connecting portion (4-1) are protruding to interior fork (5) direction, and two corresponding connecting portion (4-1) are protruding to spline connection board (2) direction in addition, bolt A (3) and bolt B (8) all pass damping pad (4) through connecting portion (4-1).

6. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1 or 2, characterized in that: the spring plate (7) comprises a spring plate body (7-1), a second middle hole (7-3) is formed in the middle of the spring plate body (7-1), the lengthened spline shaft (1) penetrates through the spring plate (7) through the second middle hole (7-3), second connecting holes (7-2) are formed in two sides of the second middle hole (7-3), the bolt B (8) penetrates through the spring plate (7) through the second connecting holes (7-2), two clamping jaws (7-4) which are turned upwards are formed in two sides of the spring plate body (7-1), and a bayonet (7-5) is formed between the two clamping jaws (7-4) on each side.

7. A noise-reducing energy-absorbing structure for a steering intermediate shaft according to claim 1, wherein: the inner fork (5) comprises an inner fork body (5-1), cross-shaped shaft holes (5-6) are correspondingly formed in the side walls of the two sides of the inner fork body (5-1), a through hole (5-2) is formed in the middle of the bottom of the inner fork body (5-1), support arms (5-3) are arranged on the two sides of the bottom of the inner fork body (5-1), the support arms (5-3) are clamped in bayonets (7-5), each support arm is provided with a third connecting hole (5-4), a bolt A (3) penetrates through the inner fork (5) through the third connecting holes (5-4), and reinforcing ribs (5-5) are arranged at the connecting position of the inner fork body (5-1) and the support arms (5-3).