CN215706622U - Automobile steering gear rocker shaft assembly structure - Google Patents

Abstract

The utility model discloses a rocker shaft assembly structure of an automobile steering device, which comprises a rocker shaft, an adjusting screw and a compensating plate, wherein a threaded hole is formed in the right end of the rocker shaft, a counter bore I is formed in the bottom of the threaded hole, a spring hole is formed in the center of the bottom of the counter bore I, a spring is arranged in the spring hole, the compensating plate is of a convex structure, a central hole is formed in the center of the compensating plate, a convex annular table on the compensating plate is arranged in the counter bore I, the adjusting screw is arranged in the threaded hole, the left end of the adjusting screw is abutted against the compensating plate, and a contact surface formed by the adjusting screw and the compensating plate is in annular surface contact; the utility model has novel structural design and convenient combination, can radially position the compensating plate, can compensate the problem of poor precision of the bottom end surface of the hole, reduces the contact area, has small friction coefficient and small abrasion, can compensate the clearance of threaded connection and greatly reduces the axial clearance of the rocker shaft assembly.

Description

Automobile steering gear rocker shaft assembly structure

Technical Field

The utility model relates to the technical field of rocker shafts, in particular to a rocker shaft assembly structure of an automobile steering gear.

Background

The linear motion of rocking arm axle subassembly in the circulation ball steering gear turning nut is converted into the rotary motion of rocking arm axle through the tooth meshing, and then drives rocking arm and pull rod and realize turning to of whole car, and to the circular cone straight-tooth, the axial clearance of rocking arm axle subassembly directly influences the tooth meshing clearance, reflects the input shaft and steering gear promptly and has the meso position clearance, and whole car performance is that the meso position clearance is big, is wafted, under the unable further circumstances that promotes of part machining precision, need eliminate the axial clearance of rocking arm axle subassembly through the institutional advancement.

In addition, the hole bottom of a threaded hole of the rocker arm shaft is limited by the structure and space, the bottom surface processing precision is poor, the friction coefficient is large when the rocker arm shaft moves relative to the head of the adjusting screw, and the gap is easy to generate due to abrasion; the two gaps can be directly reflected to tooth meshing and further transmitted to the input shaft, and the existing rocker arm shaft assembly structure of the automobile steering gear cannot meet the requirements in practical use, so that an improved technology is urgently needed in the market to solve the problems.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide a rocker shaft assembly structure of an automobile steering gear, which has the advantages of novel structural design, convenient combination, capability of radially positioning a compensating plate, capability of compensating the problem of poor precision of the end surface of a hole bottom, reduced contact area, small friction coefficient and small abrasion, capability of compensating the gap of threaded connection, great reduction of the axial gap of the rocker shaft assembly, and capability of effectively solving the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an auto steering ware rocking arm axle subassembly structure, includes rocking arm axle, adjusting screw and compensating plate, the right-hand member of rocking arm axle is provided with the screw hole, and the bottom of screw hole is provided with counter bore I, and the bottom center of counter bore I is provided with the spring hole, installs the spring in the spring hole, the compensating plate sets up to convex structure, and the center of compensating plate is provided with the centre bore, and convex annular platform sets up in counter bore I on the compensating plate, adjusting screw sets up in the screw hole, and adjusting screw's left end is contradicted with the compensating plate, and the contact surface that adjusting screw and compensating plate formed sets up to the contact of annular surface.

Furthermore, adjusting screw's head diameter is less than the diameter of shim, and the fitting surface of shim and adjusting screw head sets up to the smooth surface, can compensate the poor problem of screw hole bottom end face precision through the shim, and the shim is convenient to be processed, improves production efficiency, reduces the area of contact with the adjusting screw terminal surface through the centre bore, reduces the friction.

Furthermore, the compensation sheet does not move relative to the rocker shaft, the adjusting screw and the compensation sheet move relative to each other, so that the friction coefficient is small, the abrasion is small, the gap of threaded connection can be compensated through the spring, and the axial gap of the rocker shaft assembly is greatly reduced.

Furthermore, a thread sleeve is arranged between the adjusting screw and the thread hole.

Furthermore, the left end of the adjusting screw is of a plane structure, a counter bore II is arranged on the left end face of the adjusting screw, the diameter of the counter bore II is larger than that of the center bore, the size of annular surface contact can be adjusted by controlling the diameter of the counter bore II, the annular surface contact enables firm contact, and meanwhile, the contact area is reduced.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model is provided with the counter bore I, the compensating plate is radially positioned through the counter bore I, the compensating plate is prevented from moving, meanwhile, the installation is convenient, the problem of poor precision of the bottom end face of the threaded hole can be compensated through the compensating plate, the compensating plate is convenient to process, the production efficiency is improved, the contact area with the end face of the adjusting screw is reduced through the center hole, and the friction is reduced.

2. The spring is arranged on the rocker arm shaft assembly, the gap of threaded connection can be compensated through the spring, the axial gap of the rocker arm shaft assembly is greatly reduced, the adjusting screw and the compensating plate move relatively, the friction coefficient is small, the abrasion is small, the size of annular surface contact can be adjusted by controlling the diameter of the counter bore II, the annular surface contact enables firm contact, and meanwhile, the contact area is reduced.

3. The utility model has novel structural design and convenient combination, can radially position the compensating plate, can compensate the problem of poor precision of the bottom end surface of the hole, reduces the contact area, has small friction coefficient and small abrasion, can compensate the clearance of threaded connection and greatly reduces the axial clearance of the rocker shaft assembly.

Drawings

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

In the figure: 1 rocker shaft, 2 springs, 3 compensating plates, 4 adjusting screws, 5 thread sleeves, 6 center holes, 7 annular surface contacts, 8 counter bores I, 9 spring holes, 10 threaded holes and 11 counter bores II.

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.

Example one

Referring to fig. 1, the present invention provides a technical solution: a rocker arm shaft assembly structure of an automobile steering gear comprises a rocker arm shaft 1, an adjusting screw 4 and a compensating plate 3, wherein a threaded hole 10 is formed in the right end of the rocker arm shaft 1, a counter bore I8 is formed in the bottom of the threaded hole 10, a spring hole 9 is formed in the center of the bottom of the counter bore I8, a spring 2 is installed in the spring hole 9, the compensating plate 3 is of a convex structure, a center hole 6 is formed in the center of the compensating plate 3, a protruding annular platform on the compensating plate 3 is arranged in the counter bore I8, the compensating plate 3 does not move relative to the rocker arm shaft 1, the adjusting screw 4 and the compensating plate 3 move relatively, so that friction coefficient is small, abrasion is small, a gap of threaded connection can be compensated through the spring 2, the axial gap of the rocker arm shaft 1 assembly is greatly reduced, the adjusting screw 4 is arranged in the threaded hole 10, a threaded sleeve 5 is arranged between the adjusting screw 4 and the threaded hole 10, and the left end of the adjusting screw 4 is abutted against the compensating plate 3, the contact surface formed by the adjusting screw 4 and the compensating plate 3 is set to be an annular surface contact 7, the diameter of the head of the adjusting screw 4 is smaller than that of the compensating plate 3, the matching surface of the compensating plate 3 and the head of the adjusting screw 4 is set to be a smooth surface, the problem of poor precision of the bottom end surface of the threaded hole 10 can be compensated through the compensating plate 3, the compensating plate 3 is convenient to process, the production efficiency is improved, the contact area with the end surface of the adjusting screw 4 is reduced through the central hole 6, the friction is reduced, the left end of the adjusting screw 4 is of a planar structure, the left end surface of the adjusting screw 4 is provided with the counter bore II 11, the diameter of the counter bore II 11 is larger than that of the central hole 6, the size of the annular surface contact 7 can be adjusted by controlling the diameter of the counter bore II 11, the annular surface contact 7 enables firm contact, and the contact area is reduced at the same time, the radial positioning device has novel structural design and convenient assembly, and can radially position the compensating plate 3, the problem of poor precision of the end face of the hole bottom can be compensated, the contact area is reduced, the friction coefficient is small, the abrasion is small, the gap of threaded connection can be compensated, and the axial gap of the rocker shaft 1 assembly is greatly reduced.

When in use: the compensating plate 3 is additionally arranged between the rocker shaft 1 and the adjusting screw 4, one side of the compensating plate 3 is provided with an annular table, the compensating plate can penetrate into a counter bore I8 at the bottom of a hole of a threaded hole 10 to play a role in radial positioning, meanwhile, the center of the compensating plate 3 is provided with a center hole 6, the contact area with the adjusting screw 4 is reduced, friction is reduced, the compensating plate 3 ensures that the precision of two sides is very easy, the problem of poor precision of the end surface of the hole bottom can be compensated, the compensating plate 3 does not move relative to the rocker shaft 1, the adjusting screw 4 and the compensating plate 3 move relative to each other, the friction coefficient is small, the abrasion is small, the spring 2 of the spring hole 9 can compensate the gap of threaded connection, and the axial gap of the assembly of the rocker shaft 1 is greatly reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an automobile steering ware rocking arm axle subassembly structure, includes rocking arm axle (1), adjusting screw (4) and compensator (3), its characterized in that: the right-hand member of rocking arm axle (1) is provided with screw hole (10), and the bottom of screw hole (10) is provided with counter bore I (8), and the bottom center of counter bore I (8) is provided with spring hole (9), installs spring (2) in spring hole (9), compensator (3) set up to convex structure, and the center of compensator (3) is provided with centre bore (6), and convex annular platform sets up in counter bore I (8) on compensator (3), adjusting screw (4) set up in screw hole (10), and the left end of adjusting screw (4) is inconsistent with compensator (3), and adjusting screw (4) set up to annular surface contact (7) with the contact surface that compensator (3) formed.

2. The rocker shaft assembly structure of an automobile steering gear according to claim 1, wherein: the diameter of the head of the adjusting screw (4) is smaller than that of the compensating plate (3), and the matching surface of the compensating plate (3) and the head of the adjusting screw (4) is a smooth surface.

3. The rocker shaft assembly structure of an automobile steering gear according to claim 1, wherein: the compensating plate (3) and the rocker shaft (1) do not move relatively, and the adjusting screw (4) and the compensating plate (3) move relatively.

4. The rocker shaft assembly structure of an automobile steering gear according to claim 1, wherein: and a thread sleeve (5) is arranged between the adjusting screw (4) and the threaded hole (10).

5. The rocker shaft assembly structure of an automobile steering gear according to claim 1, wherein: the left end of the adjusting screw (4) is of a plane structure, a counter bore II (11) is arranged on the left end face of the adjusting screw (4), and the diameter of the counter bore II (11) is larger than that of the center hole (6).

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