CN107697211B

CN107697211B - Steering limiting mechanism

Info

Publication number: CN107697211B
Application number: CN201710638780.6A
Authority: CN
Inventors: 陈善群; 吴昊; 廖斌
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2019-12-13
Anticipated expiration: 2037-07-31
Also published as: CN107697211A

Abstract

The invention discloses a steering limiting mechanism, which comprises a steering shaft, wherein a shell is arranged outside the steering shaft, two limiting rods are fixedly connected to the surface of the steering shaft, the two limiting rods are horizontally arranged and are arranged on a straight line, the top ends of the limiting rods are fixedly connected with limiting balls, an annular groove is arranged on the inner surface of the shell, the central line of the annular groove and the central line of the limiting rods are on the same plane, the opening of the annular groove is slightly larger than the diameter of the limiting rods, the concave surface of the annular groove is slightly larger than the surface of the limiting balls, the limiting balls are arranged in the annular groove, two barrier plates are fixedly connected in the annular groove, the straight line where the two barrier plates are positioned is vertical to the straight line where the limiting rods are positioned, buffer springs are connected to two sides of the barrier plates, the buffer springs are arranged in the annular groove, the free length of the buffer springs is one eighth of the, meanwhile, a buffer mechanism is added, so that the device is worthy of popularization.

Description

steering limiting mechanism

Technical Field

The invention relates to the technical field of vehicle steering, in particular to a steering limiting mechanism.

Background

The limiting mechanism is a structure necessary for a vehicle and is used for limiting the angle of the vehicle when the vehicle turns, and for general bicycles, motorcycles, electric vehicles, tricycles, mopeds and the like, the limiting mode is wheel limiting, namely a limiting screw is arranged on a wheel steering knuckle, and when the wheel rotates in place, the screw collides with the wheel, so that the limiting is realized.

However, the limiting mechanism has the following problems that firstly, the limiting mode is the collision of the screw and the wheel, which can accelerate the damage speed of the equipment, and simultaneously, the limiting mechanism and the wheel can be deformed, which leads to the failure of limiting; secondly, when the vehicle is in a sharp turn or a large-amplitude turn, severe impact can be caused, and no buffer structure is arranged, so that unsafe factors are increased.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a steering limiting mechanism which can prevent equipment from being excessively collided during steering, reduce the damage rate of the device, increase a buffer structure and reduce the possibility of danger.

the technical scheme adopted by the invention for solving the technical problems is as follows: a steering limiting mechanism comprises a steering shaft, a shell is arranged outside the steering shaft, a gap exists between the steering shaft and the shell, two limiting rods are fixedly connected to the surface of the steering shaft, the two limiting rods are horizontally arranged and are arranged on the same straight line, limiting balls are fixedly connected to the top ends of the limiting rods, an annular groove is formed in the inner surface of the shell, the central line of the annular groove and the central line of the limiting rods are on the same plane, the opening of the annular groove is slightly larger than the diameter of the limiting rods, the concave surface of the annular groove is slightly larger than the surface of the limiting balls, the limiting balls are arranged in the annular groove, two barrier plates are fixedly connected in the annular groove, the two barrier plates are arranged on the same straight line, the straight line of the barrier plates is perpendicular to the straight line of the limiting rods, and buffer springs are connected to the two sides of the barrier plates, the buffer springs are all arranged in the annular groove and are arranged along the concave surface, the free length of each buffer spring is one eighth of the circumference of the annular groove, and the top ends of the buffer springs are all provided with circular flat plates.

As a preferable aspect of the present invention, a handle is fixedly connected to a top end of the steering shaft.

As a preferable aspect of the present invention, the bottom of the steering shaft is bifurcated into two fixed shafts.

as a preferable technical solution of the present invention, the length of the housing is slightly smaller than the length from the top end to the bottom branch of the steering shaft.

As a preferable technical scheme of the invention, two fixed shafts are fixedly connected with a wheel.

as a preferable technical solution of the present invention, the circular flat plate is provided with a rubber mat.

As a preferable technical solution of the present invention, a rubber leather sheath is disposed on a surface of the housing.

As a preferred aspect of the present invention, the housing is outwardly protruded at the annular groove.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the steering shaft, the shell is additionally arranged outside the steering shaft, the annular groove and the blocking plate are arranged on the inner side of the shell, and the limiting rod and the limiting ball which are fixed on the steering shaft are clamped in the groove, so that the collision between a screw and a wheel during steering is changed into the collision between the limiting ball and the blocking plate, the damage probability of the steering shaft and the wheel is reduced, and the service life of the device is prolonged.

(2) According to the invention, the buffer spring is added between the limiting ball and the blocking plate, and the free length of the buffer spring is one eighth of the circumference of the annular groove, so that when the rotating angle is within forty-five degrees, blocking cannot occur, elasticity appears when the rotating angle exceeds forty-five degrees, the highest rotating angle can only be close to ninety degrees, and therefore, when the rotating angle suddenly turns and turns greatly, buffer force is generated, and the possibility of danger is reduced.

Drawings

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

FIG. 2 is a schematic view of a structure of a ball according to the present invention;

Fig. 3 is a schematic view of a structure of a steering shaft according to the present invention.

In the figure: 1-a steering shaft; 2-a housing; 3-a limiting rod; 4-a limiting ball; 5-an annular groove; 6-a barrier plate; 7-a buffer spring; 8-round flat plate; 9-a handle; 10-a fixed shaft; 11-a wheel; 12-a rubber mat; 13-rubber leather sheath.

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.

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. In the present invention, the terms of direction and position, such as "up", "middle", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to be illustrative and understood, and not restrictive.

Example (b):

As shown in fig. 1 to 3, the present invention provides a steering limiting mechanism, which includes a steering shaft 1, a housing 2 is disposed outside the steering shaft 1, a gap exists between the steering shaft 1 and the housing 2, two limiting rods 3 are fixedly connected to a surface of the steering shaft 1, the two limiting rods 3 are horizontally disposed and are on a straight line, a limiting ball 4 is fixedly connected to top ends of the limiting rods 3, an annular groove 5 is disposed on an inner surface of the housing 2, a central line of the annular groove 5 and a central line of the limiting rods 3 are on the same plane, an opening of the annular groove 5 is slightly larger than a diameter of the limiting rods 3, a concave surface of the annular groove 5 is slightly larger than a surface of the limiting ball 4, the limiting balls 4 are disposed in the annular groove 5, two blocking plates 6 are fixedly connected in the annular groove 5, and the two blocking plates 6 are on a straight line, and the straight line of 6 places of barrier plate is perpendicular with the straight line of 3 places of gag lever post, the both sides of barrier plate 6 all are connected with buffer spring 7, buffer spring 7 all arranges annular groove 5 in, and places along the concave surface, buffer spring 7's free length is one eighth of 5 girths of annular groove, and all is provided with circular dull and stereotyped 8 on buffer spring 7's top.

When the invention is used, the handle 9 is rotated to enable the steering shaft 1 to rotate along with the steering shaft, then the limiting rod 3 and the wheels 11 on the steering shaft 1 are driven to rotate, when the steering angle is within forty-five degrees, the limiting rod 3 can not be blocked and can rotate left and right freely, when the rotating angle exceeds forty-five degrees, the limiting ball 4 on the limiting rod 3 can touch the round flat plate 8 at the top end of the buffer spring 7 in the annular groove 5, the buffer spring 7 contracts to generate elasticity, thereby playing a role in buffering, because the bottom end of the buffer spring 7 is fixed on the blocking plate 6 and the blocking plate 6 is also fixed, the steering angle can only approach ninety degrees at most, the possibility of danger is reduced, meanwhile, the collision between the screw and the wheels 11 in the prior art is changed into the collision between the limiting ball 4 and the blocking plate 6, the damage probability of the steering shaft 1 and the wheels 11 is reduced, and the service life of, is worthy of popularization.

As shown in fig. 1, the circular plate 8 is provided with a rubber pad 12 so that the steering shaft 1 does not damage the device when suddenly steered.

As shown in fig. 2, the housing 2 protrudes outward at the annular groove 5, so that the thickness of the housing 2 is equal, and the housing 2 cannot be easily broken.

As shown in fig. 3, a handle 9 is fixedly connected to the top end of the steering shaft 1, and can control the steering of the steering shaft 1; the bottom of the steering shaft 1 is branched into two fixed shafts 10 which can be used for fixing wheels 11; the length of the shell 2 is slightly smaller than the length from the top end to the bottom fork of the steering shaft 1, so that the shell 2 does not block the steering of the steering shaft 1; the two fixed shafts 10 are fixedly connected with a wheel 11, so that the steering of the wheel 11 is synchronous with the steering shaft 1; the surface of shell 2 is provided with rubber leather sheath 13, because shell 2 compares prior art and is the structure of newly adding, sets up rubber leather sheath 13 on its surface, can prevent that shell 2 from hurting the people.

The invention is mainly characterized in that: (1) according to the steering shaft, the shell is additionally arranged outside the steering shaft, the annular groove and the blocking plate are arranged on the inner side of the shell, and the limiting rod and the limiting ball which are fixed on the steering shaft are clamped in the groove, so that the collision between a screw and a wheel during steering is changed into the collision between the limiting ball and the blocking plate, the damage probability of the steering shaft and the wheel is reduced, and the service life of the device is prolonged. (2) According to the invention, the buffer spring is added between the limiting ball and the blocking plate, and the free length of the buffer spring is one eighth of the circumference of the annular groove, so that when the rotating angle is within forty-five degrees, blocking cannot occur, elasticity appears when the rotating angle exceeds forty-five degrees, the highest rotating angle can only be close to ninety degrees, and therefore, when the rotating angle suddenly turns and turns greatly, buffer force is generated, and the possibility of danger is reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a turn to stop gear, includes steering spindle (1), its characterized in that: the steering mechanism is characterized in that a shell (2) is arranged outside the steering shaft (1), a gap exists between the steering shaft (1) and the shell (2), two limiting rods (3) are fixedly connected to the surface of the steering shaft (1), the two limiting rods (3) are horizontally arranged and are arranged on the same straight line, limiting balls (4) are fixedly connected to the top ends of the limiting rods (3), an annular groove (5) is formed in the inner surface of the shell (2), the central line of the annular groove (5) and the central line of the limiting rods (3) are arranged on the same plane, the opening of the annular groove (5) is slightly larger than the diameter of the limiting rods (3), the concave surface of the annular groove (5) is slightly larger than the surface of the limiting balls (4), the limiting balls (4) are arranged in the annular groove (5), and two blocking plates (6) are fixedly connected in the annular groove (5), two baffle plate (6) on a straight line, and baffle plate (6) place straight line and gag lever post (3) place straight line perpendicular, the both sides of baffle plate (6) all are connected with buffer spring (7), buffer spring (7) are all arranged in annular groove (5), and place along the concave surface, buffer spring's (7) free length is one eighth of annular groove (5) week length, and all is provided with circular dull and stereotyped (8) on buffer spring's (7) top.

2. The steering limit mechanism according to claim 1, wherein: the top end of the steering shaft (1) is fixedly connected with a handle (9).

3. The steering limit mechanism according to claim 1, wherein: the bottom of the steering shaft (1) is bifurcated into two fixed shafts (10).

4. The steering limit mechanism according to claim 1, wherein: the length of the shell (2) is slightly less than that of the fork part from the top end to the bottom of the steering shaft (1).

5. The steering limit mechanism according to claim 1, wherein: two fixed axles (10) are fixedly connected with a wheel (11).

6. The steering limit mechanism according to claim 1, wherein: the round flat plate (8) is provided with a rubber cushion (12).

7. The steering limit mechanism according to claim 1, wherein: the surface of the shell (2) is provided with a rubber leather sleeve (13).

8. The steering limit mechanism according to claim 1, wherein: the housing (2) is outwardly convex at the annular groove (5).