CN218858513U

CN218858513U - Length adjustment preloading device of steering column

Info

Publication number: CN218858513U
Application number: CN202223078125.5U
Authority: CN
Inventors: 方梦醒
Original assignee: Yuyao Wanguo Machinery Co ltd
Current assignee: Yuyao Wanguo Machinery Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-14
Anticipated expiration: 2032-11-21

Abstract

The utility model belongs to the technical field of car steering column, concretely relates to length adjustment preloading device who turns to post, include the sleeve that cup joints in proper order from outer to inner, bush and steering spindle core, telescopic both ends are fixed with the breach hoop, the breach hoop encircles on the lateral wall of bush, and the breach department that is located the breach hoop installs the benefit ring spare, the top that is located the benefit ring spare on the breach hoop transversely is fixed with the bolt, a tight benefit ring spare is pressed from both sides in both ends for tightening up the breach hoop, the benefit ring spare forms the pretension subassembly with the bolt, the benefit ring spare is established to the cambered surface with a side adaptation bush of bush contact, telescopic center department is the axle center, telescopic interior anchor ring array is provided with the convex arch of arc, protruding and the inseparable butt of bush form transition fit, the opposite side at the both ends of breach is set up to the inclined plane, the both sides adaptation inclined plane slope that the benefit ring spare deviates from the hoop mutually. The utility model discloses can realize eliminating radial play and produce the effect of certain shape of preapring for an unfavorable turn of events.

Description

Length adjustment preloading device of steering column

Technical Field

The utility model belongs to the technical field of the car steering column, concretely relates to length adjustment preloading device of steering column.

Background

A steering column is the element of the steering system that connects the steering wheel and the steering gear. Through the steering column, a driver transmits torque to the steering gear to drive the steering gear to realize steering, the diversity of the current steering column (core element of a steering system) is almost as rich as the vehicle type, and the requirements of different vehicle types and grades are greatly different. However, two of these requirements are always indispensable: the steering column must be able to steer accurately and must provide the highest degree of safety in the event of an accident.

The problems existing in the prior art are as follows:

the steering column tube is fixed on a vehicle body, the steering shaft penetrates through the steering column tube and is supported on a bearing and a bushing in the column tube, the mounting mode can play a role in relieving impact energy absorption to a certain extent, and the safety of a driver in driving is correspondingly improved;

based on the circumstances, this application provides one kind through increasing the pretightning force, realizes reducing the play between steering column and the cylinder, on guaranteeing its stable basis of operation, reduces the produced deformation of rigid wear.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a length adjustment preloading device of steering column can realize eliminating radial play and produce the effect of certain shape of preapring for an unfavorable turn of events.

The utility model discloses the technical scheme who takes specifically as follows:

the utility model provides a length adjustment preloading device of steering column, includes sleeve, bush and the steering spindle core that cup joints in proper order from outer to interior, telescopic both ends are fixed with the breach hoop, the breach hoop encircles on the lateral wall of bush, and is located the breach department of breach hoop and installs the benefit ring spare, the top that is located the benefit ring spare on the breach hoop transversely is fixed with the bolt for tighten up the tight benefit ring spare of both ends clamp of breach hoop.

The notch hoop, the compensating ring piece and the bolt form a pre-tightening assembly.

And one side face of the ring supplementing piece, which is contacted with the lining, is matched with the lining to form an arc surface.

The center of the sleeve is used as an axis, the inner annular surface array of the sleeve is provided with arc-shaped convex bulges, and the bulges are tightly abutted with the lining to form transition fit.

The opposite sides of the two ends of the notch hoop are inclined planes which are opposite to each other, and the two sides of the supplement ring piece, which are opposite to each other, are matched with the inclined planes to incline.

Two limiting strips are symmetrically arranged on the inclined planes at the two ends of the notch hoop, and the supplement ring piece is inserted into a space formed by the four limiting strips.

And an installation cavity is formed in the ring supplementing piece, and the cavity walls on two sides of the installation cavity continue to extend in the ring supplementing piece to form an arc-shaped cavity opposite to the bottom surface of the ring supplementing piece.

The pre-tightening assembly further comprises a spring and an elastic sheet which are arranged in the installation cavity, one end of the spring is abutted to the cavity wall of the installation cavity, and the other end of the spring is abutted to the elastic sheet and used for enabling the elastic sheet to partially extend out of the port of the installation cavity.

The both ends of shell fragment also are reverse setting, and the adaptation is installed in the inside of arc cavity.

The bottom surface of the elastic sheet is supported by the spring and is tightly abutted to the lining, and the bottom surface of the elastic sheet is matched with the annular surface of the lining and is provided with an arc surface.

The utility model discloses the technological effect who gains does:

the utility model discloses, through pressing from both sides the both ends of will notching the hoop tightly, make mend the ring piece and sink and hug closely with the bush, promote the compactness between the component.

The utility model discloses, mend the ring piece be in with bush ring side in close contact with's state, mend the inside shell fragment of ring piece and receive the thrust of spring all the time with the bush butt, even take place to rock the skew at the bush, the shell fragment also is in constantly to be pushed the state of interior continuation benefit position, can realize eliminating radial play and produce the certain effect of preapring for an unfavorable turn of events shape.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a bushing and a pre-tightening assembly according to the present invention;

fig. 3 is an enlarged detail view of a position a in fig. 2 according to the present invention;

fig. 4 is a schematic diagram of a separated structure of the intermediate pre-tightening assembly of the present invention;

fig. 5 is an enlarged structural schematic diagram of the detail B-B in fig. 4 of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. a steering shaft core; 2. a bushing;

3. a sleeve; 301. a protrusion; 302. a notched hoop; 303. ring supplementing pieces; 304. a bolt; 305. a limiting strip; 306. a mounting cavity; 307. an arc-shaped chamber; 308. a spring; 309. an elastic sheet.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following text is only intended to describe one or several particular embodiments of the invention, and does not strictly limit the scope of the claims specifically claimed.

As shown in fig. 1-2, a length adjustment pre-tightening device for a steering column includes a sleeve 3, a bush 2 and a steering shaft core 1 which are sequentially sleeved from outside to inside, wherein both ends of the sleeve 3 are fixed with a notch hoop 302, the notch hoop 302 encircles the side wall of the bush 2, a supplement ring member 303 is installed at a notch of the notch hoop 302, a side surface of the supplement ring member 303 contacting with the bush 2 is adapted to the bush 2 and is set to be a cambered surface, a bolt 304 is transversely fixed on the notch hoop 302 above the supplement ring member 303 for tightening both ends of the notch hoop 302 to clamp the supplement ring member 303, the nut and the bolt 304 are tightened to tighten both ends of the notch hoop 302 to ensure that the bottom surface of the supplement ring member 303 is tightly attached to the ring surface of the bush 2, and the notch hoop 302, the supplement ring member 303 and the bolt 304 form a pre-tightening assembly.

Referring to fig. 3, the center of the sleeve 3 is used as an axis, the arc-shaped convex protrusions 301 are arranged in the inner annular surface array of the sleeve 3, the protrusions 301 are tightly abutted to the liner 2 to form transition fit, and the sleeve 3 is in transition fit with the liner 2 through the protrusions 301 and is not prone to dislocation.

Referring to fig. 4, opposite sides of two ends of the notch hoop 302 are provided with inclined surfaces, the two inclined surfaces are inclined away from each other, two sides, away from each other, of the supplement ring piece 303 are matched with the inclined surfaces to incline, when the two ends of the notch hoop 302 are clamped, the inclined surfaces provide certain thrust to two sides of the supplement ring piece 303, so that the supplement ring piece 303 sinks to be tightly attached to the bushing 2, the bushing 2 and the sleeve 3 are pre-compressed, the tightness between components is improved, and after the steering shaft core 1 is subjected to disturbance load, a gap is formed between the bushing 2 and the sleeve 3, two limit strips 305 are symmetrically arranged on the inclined surfaces of the two ends of the notch hoop 302, the supplement ring piece 303 is inserted into a space formed by the four limit strips, and the axial dislocation of the supplement ring piece 303 can be further prevented.

Referring to fig. 5, an installation cavity 306 is formed inside the supplement ring member 303, the cavity walls on the two sides of the installation cavity 306 continue to extend inside the supplement ring member 303 to form an arc-shaped cavity 307 opposite to the bottom surface of the supplement ring member 303, the pre-tightening assembly further comprises a spring 308 and an elastic sheet 309 which are arranged inside the installation cavity 306, one end of the spring 308 abuts against the cavity wall of the installation cavity 306, the other end of the spring 308 abuts against the elastic sheet 309, the two ends of the elastic sheet 309 are also oppositely arranged and are installed inside the arc-shaped cavity 307 in an adaptive manner, and the spring 308 is used for enabling the elastic sheet 309 to partially extend out of a port of the installation cavity 306.

Further, the bottom surface of the elastic piece 309 is supported by the spring 308 to tightly abut against the bushing 2, and the bottom surface of the elastic piece 309 is matched with the annular surface of the bushing 2 to form an arc surface.

According to the structure, when the two ends of the notch hoop 302 are clamped by the bolts 304, the compensation ring piece 303 is in a state of being in close contact with the ring side of the bush 2, the elastic sheet 309 in the compensation ring piece 303 is always in abutting joint with the bush 2 under the pushing force of the spring 308, even if the bush 2 shakes and deviates, the elastic sheet 309 is in a state of being pushed to the inner continuous compensation position all the time, and the radial play can be eliminated and a certain deformation prevention effect can be realized through the abutting joint mode of the spring 308 and the elastic sheet 309.

The utility model discloses a theory of operation does: through clamping the both ends of breach hoop 302, make mend ring piece 303 sink and hug closely with bush 2, promote the compactedness between the component, secondly, mend ring piece 303 is in the state of being in close contact with bush 2 ring side, and the shell fragment 309 of mend ring piece 303 inside receives the thrust of spring 308 to be supported with bush 2 all the time, even take place to rock the skew at bush 2, shell fragment 309 also is in the state of being pushed the interior continuation position of continuing, can realize eliminating radial play and produce certain effect of preapring for an unfavorable turn of events.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims

1. The utility model provides a length adjustment preloading device of steering column, includes sleeve (3), bush (2) and steering spindle core (1) that cup joint in proper order from outer to interior, its characterized in that: the two ends of the sleeve (3) are fixedly provided with notch hoop rings (302), the notch hoop rings (302) encircle the side wall of the bushing (2), a supplement ring piece (303) is arranged at a notch of the notch hoop rings (302), and a bolt (304) is transversely fixed on the notch hoop rings (302) above the supplement ring piece (303) and is used for tightening the two ends of the notch hoop rings (302) to clamp the supplement ring piece (303);

the notch hoop (302), the supplement ring piece (303) and the bolt (304) form a pre-tightening assembly.

2. A length adjustment pretensioning device for steering column according to claim 1, characterized in that: one side face of the supplement ring piece (303) contacted with the lining (2) is matched with the lining (2) and is set to be an arc face.

3. A length adjustment pretension device for steering column according to claim 1 characterized in that: the center of the sleeve (3) is used as an axis, the inner annular surface array of the sleeve (3) is provided with arc-shaped convex bulges (301), and the bulges (301) are tightly abutted with the lining (2) to form transition fit.

4. A length adjustment pretensioning device for steering column according to claim 1, characterized in that: the opposite sides of the two ends of the notch hoop (302) are provided with inclined surfaces, the two inclined surfaces are inclined away from each other, and the inclined surfaces of the two sides of the supplement ring piece (303) which are deviated from each other are matched with each other to incline.

5. The length adjustment pretension device for steering column according to claim 4, characterized in that: two limiting strips (305) are symmetrically arranged on the inclined planes at the two ends of the notch hoop (302), and the supplement ring piece (303) is inserted into a space formed by the four limiting strips.

6. A length adjustment pretension device for steering column according to claim 1 characterized in that: an installation cavity (306) is formed in the ring supplementing piece (303), and the cavity walls on two sides of the installation cavity (306) continue to extend in the ring supplementing piece (303) to form an arc-shaped cavity (307) opposite to the bottom surface of the ring supplementing piece (303).

7. The length adjustment pretension device for steering column according to claim 6, characterized in that: the pre-tightening assembly further comprises a spring (308) and an elastic sheet (309) which are arranged inside the installation cavity (306), one end of the spring (308) is abutted to the cavity wall of the installation cavity (306), and the other end of the spring (308) is abutted to the elastic sheet (309) and used for enabling the elastic sheet (309) to partially extend out of a port of the installation cavity (306).

8. The length adjustment pretension device for steering column according to claim 7, characterized in that: the two ends of the elastic sheet (309) are also arranged in opposite directions and are arranged in the arc-shaped cavity (307) in an adaptive mode.

9. The length adjustment pretension device for steering column according to claim 7, characterized in that: the bottom surface of the elastic sheet (309) is supported by a spring (308) to be tightly abutted against the bushing (2), and the bottom surface of the elastic sheet (309) is matched with the annular surface of the bushing (2) to form an arc surface.