Six-groove valve sleeve of steering engine

Abstract

The six-groove valve sleeve of the steering engine comprises a cylindrical main body, and a central through hole is formed in the center of the main body in a penetrating mode. A plurality of fin grooves are embedded in the outer wall of the main body, a plurality of frosted grooves are embedded in the inner wall of the main body, and an oil inlet hole penetrates through the outer wall of the main body; six oil grooves which are circumferentially and uniformly distributed are embedded in the inner wall of the main body, oil holes which penetrate through the main body are formed in the oil grooves, and annular grooves are embedded in the outer wall of the main body corresponding to the oil holes; an oil return groove is embedded in the inner edge of the top end of the body and internally provided with an oil return through hole penetrating through the body. On the basis of the fin grooves, heat dissipation can be conducted on the valve sleeve and the valve body, and the situation that due to long-time work, oil liquid temperature rise is caused, and the lubricating performance is affected is avoided; the frosted groove is formed, the oil storage effect is better, and the lubricating effect between the valve sleeve and the valve body is improved; and through the oil guide structure that six oil grooves are matched with a plurality of through grooves, the oil return effect is better, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering gear accessories, in particular to a six-slot valve sleeve for a steering gear. Background Art

[0002] The steering gear in a car helps the driver to reduce the steering effort when turning the steering wheel, making it easy and convenient for the driver to drive. It is mainly divided into rack steering gears and worm gear steering gears.

[0003] The existing rack-and-pinion steering gear of an automobile is mainly connected with a steering shaft and a gear shaft, a valve sleeve is arranged on the outer surface of the steering shaft, the gear shaft is meshed with the gear rack, the gear rack is connected with a tie rod, and the tie rod is connected with the wheel of the automobile, so that power is input to the steering shaft through the steering wheel, thereby controlling the change of the direction of the wheel, thereby changing the driving direction of the automobile. A torsion bar is arranged in the steering shaft, a steering shaft oil groove is arranged on the outer wall of the steering shaft, a valve sleeve is arranged at the position where the steering shaft is provided with the steering shaft oil groove, a valve sleeve oil groove is arranged in the valve sleeve to match the steering shaft oil groove, an oil hole is arranged on the valve sleeve to match the valve sleeve oil groove, and the oil hole is connected with the automobile oil cylinder on the outer wall of the valve sleeve, and the movement of the piston outside the rack is controlled by the flow of hydraulic oil between the gear shaft, the gear shaft and the rack, so that additional force can be provided to the driver when turning the steering wheel, making the driver drive more easily.

[0004] At present, the number of valve sleeve oil grooves in the existing valve sleeve is generally 8, the structure is relatively complex, and the processing is difficult.

[0005] Chinese utility model patent CN201420270073.8 discloses a six-slot valve sleeve for a steering gear, including a valve sleeve body, the valve sleeve body is cylindrical, a valve sleeve hole for the steering shaft of the automobile steering gear to extend into is arranged in the valve sleeve body, six valve sleeve oil grooves are evenly distributed on the inner side wall of the valve sleeve hole, the valve sleeve oil groove is long strip-shaped, the length direction of the valve sleeve oil groove is the same as the axial direction of the valve sleeve hole, an oil outlet hole is arranged at the bottom of the valve sleeve oil groove, the oil outlet hole communicates with the valve sleeve hole and the outer side of the valve sleeve body, an oil inlet hole is arranged on the side wall of the valve sleeve body, the oil inlet hole is respectively arranged between the valve sleeve oil groove and the adjacent valve sleeve oil groove, the oil inlet hole communicates with the valve sleeve hole and the outer side of the valve sleeve body, and three oil return grooves are arranged on the inner side wall of the valve sleeve hole, and the oil return grooves are evenly distributed between the valve sleeve oil grooves. The six-slot valve sleeve of the steering gear of the utility model adopts a six-slot structure, the structure is simpler, the processing time is shorter, the processing is easier, and the production and processing efficiency can be effectively improved.

[0006] However, the current steering machine valve sleeve still has the following defects:

[0007] 1. The valve body and valve sleeve will heat up when working for a long time, which will cause the oil temperature to rise and affect the lubrication performance;

[0008] 2. Under high-speed operation, the smooth outer wall of the valve body and the inner wall of the valve sleeve squeeze the oil, resulting in poor lubrication;

[0009] 3. The oil return completely depends on the relative friction and extrusion between the valve body and the valve sleeve, and the oil return effect is not good. Summary of the invention

[0010] Technical problems to be solved by the utility model

[0011] Long-term operation will cause the temperature of the valve body and valve sleeve to rise, which will cause the temperature of the oil to rise, affecting the lubrication performance; under high-speed operation, the smooth outer wall of the valve body and the inner wall of the valve sleeve squeeze the oil, resulting in poor lubrication; the oil return depends entirely on the relative friction and extrusion of the valve body and valve sleeve, and the oil return effect is not good.

[0012] Technical solutions for solving technical problems

[0013] Further advantageous and in some cases inventive embodiments and developments of the invention are explained in the following description.

[0014] A six-slot valve sleeve for a steering gear, comprising a main body, the main body being arranged as a cylinder, and a central through hole being arranged at the center of the main body;

[0015] The outer wall of the main body is embedded with a plurality of fin grooves, the inner wall of the main body is embedded with a plurality of frosted grooves, and an oil inlet hole is provided through the outer wall of the main body;

[0016] The inner wall of the main body is embedded with 6 oil grooves evenly distributed in a circumference, the oil grooves are provided with oil holes penetrating the main body, and the outer wall of the main body is embedded with an annular groove corresponding to the oil holes;

[0017] An oil return groove is embedded in the inner edge of the top end of the main body, and an oil return through hole is arranged in the oil return groove and penetrates through the main body.

[0018] Preferably, the fin grooves and the frosting grooves are respectively located on the inner and outer walls of the main body and are evenly distributed in an arc array.

[0019] Preferably, the oil holes are located on the inner wall of the oil tank and are arranged on three horizontal planes.

[0020] Preferably, an oil inlet groove is provided on the outer wall of the main body corresponding to the oil inlet hole.

[0021] Preferably, a groove is provided on the inner wall of the main body and below the oil groove, and the groove is connected to the oil return groove through a plurality of through grooves.

[0022] Preferably, the through grooves and the oil grooves are alternately arranged on the inner wall of the main body.

[0023] Preferably, the axis of the central through hole is colinear with the axis of the main body.

[0024] Preferably, both end surfaces of the main body are embedded with latch grooves.

[0025] Effect of utility model

[0026] 1. It is equipped with several fin grooves to dissipate heat from the valve sleeve and valve body, thus avoiding the oil temperature rising due to long-term operation and affecting the lubrication performance;

[0027] 2. Equipped with frosted grooves, the oil storage effect is better, and the lubrication effect between the valve sleeve and the valve body is improved;

[0028] 3. The oil guide structure with 6 oil grooves and several through grooves has better oil return effect and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following is a detailed description of the embodiments of the present invention according to the accompanying drawings. In the accompanying drawings:

[0030] Figure 1 This is the first structural view of the utility model;

[0031] Figure 2 It is the second structural view of the utility model;

[0032] Figure 3 It is a top view of the utility model;

[0033] Figure 4 It is a cross-sectional view of the utility model;

[0034] Figure 5 It is a structural view of the hidden part of the main body of the utility model.

[0035] Description of Reference Numerals

[0036] 1. Main body; 1-1. Fin groove; 1-2. Frosted groove; 2. Oil groove; 201. Oil hole; 202. Annular groove; 3. Oil inlet hole; 301. Oil inlet groove; 4. Oil return groove; 401. Oil return through hole; 5. Through groove; 501. Concave groove; 6. Pin groove. DETAILED DESCRIPTION

[0037] Hereinafter, a six-slot valve sleeve for a steering gear which is one embodiment of the present invention will be described with reference to the accompanying drawings.

[0038] Please refer to Figure 1-Figure 5 As shown, a six-slot valve sleeve for a steering gear includes a main body 1;

[0039] The main body 1 is set as a cylinder, and a central through hole is set through the center of the main body 1;

[0040] Specifically, the axis of the central through hole is colinear with the axis of the main body 1;

[0041] More specifically, the central through hole is used for the steering shaft of the automobile steering gear (derived from the prior art and will not be elaborated in detail) to pass through;

[0042] The outer wall of the main body 1 is embedded with a plurality of fin slots 1-1;

[0043] The inner wall of the main body 1 is embedded with a plurality of frosting grooves 1-2;

[0044] The inner wall of the main body 1 is provided with an oil groove 2, and the oil groove 2 is provided with an oil hole 201 perpendicular to the axis of the main body 1;

[0045] Specifically, the oil grooves 2 are evenly distributed in a circular array on the inner wall of the main body 1, the number of the oil grooves 2 is set to 6, and the oil holes 201 are located on the inner wall of the oil grooves 2 and are arranged on 3 horizontal planes;

[0046] Three annular grooves 202 are arranged on the outer wall of the main body 1 and correspond to the oil holes 201;

[0047] An oil return groove 4 is embedded in the inner edge of the top of the main body 1, and an oil return through hole 401 perpendicular to the axis of the main body 1 is provided in the oil return groove 4, and the oil return through hole 401 runs through the main body 1;

[0048] An oil inlet hole 3 is provided through the outer wall of the main body 1;

[0049] Specifically, the number of the oil inlet holes 3 is set to be several and they are evenly distributed in a circular array on the outer wall of the main body 1, and an oil inlet groove 301 is provided on the outer wall of the main body 1 corresponding to the oil inlet holes 3;

[0050] A groove 501 is provided on the inner wall of the main body 1 and below the oil tank 2;

[0051] A plurality of through grooves 5 are provided between the groove 501 and the oil return groove 4;

[0052] Specifically, the through grooves 5 and the oil grooves 2 are arranged alternately, and the through grooves 5 are used to connect the grooves 501 and the oil return grooves 4;

[0053] Both end surfaces of the main body 1 are embedded with bayonet slots 6, which are used to engage with a transmission pin located on the outer wall of the steering shaft of the automobile steering gear.

[0054] Normally used status

[0055] The staff installed the valve sleeve included in the utility model on the outside of the steering valve body of the automobile, and supplied oil between the valve sleeve and the valve body through the oil inlet hole 3. Its working principle is basically the same as that of the steering valve sleeve in the prior art, and the difference is that:

[0056] The outer wall of the valve sleeve is embedded with a plurality of fin grooves 1-1, which can dissipate heat from the oil and avoid poor lubrication caused by excessive oil temperature;

[0057] The inner wall of the valve sleeve is embedded with a plurality of frosted grooves 1-2, which have a better oil storage effect than the smooth inner wall of the prior art, improve the lubrication performance, and avoid the lack of lubricating oil caused by the extrusion of the smooth inner wall, thereby causing wear;

[0058] A groove 501 is provided on the inner wall of the valve sleeve and is connected to the oil return groove 4 via a through groove 5, so that the oil return effect is better.

[0059] Compared with the prior art, the utility model has the following characteristics:

[0060] 1. It is equipped with a plurality of fin grooves 1-1, which can dissipate heat from the valve sleeve and valve body, thereby preventing the oil from heating up due to long-term operation and affecting the lubrication performance;

[0061] 2. Equipped with 1-2 frosted grooves, the oil storage effect is better, and the lubrication effect between the valve sleeve and the valve body is improved;

[0062] 3. The oil return effect is better and the reliability is high through the oil guide structure of the 6 oil grooves 2 and the plurality of through grooves 5.

[0063] The present invention is not limited to the embodiment, and various modifications can be made without departing from the spirit of the present invention.

Claims

1. A six-slot valve sleeve for a steering gear, comprising a main body (1), characterized in that: The main body (1) is arranged as a cylinder, and a central through hole is arranged at the center of the main body (1); The outer wall of the main body (1) is embedded with a plurality of fin grooves (1-1), the inner wall of the main body (1) is embedded with a plurality of frosted grooves (1-2), and an oil inlet hole (3) is provided through the outer wall of the main body (1); The inner wall of the main body (1) is embedded with six oil grooves (2) evenly distributed in a circumference, the oil grooves (2) are provided with oil holes (201) penetrating the main body (1), and the outer wall of the main body (1) is embedded with an annular groove (202) corresponding to the oil holes (201); An oil return groove (4) is embedded in the inner edge of the top end of the main body (1), and an oil return through hole (401) is provided in the oil return groove (4) and penetrates the main body (1).

2. A six-slot valve sleeve for a steering gear according to claim 1, characterized in that: The fin grooves (1-1) and the frosting grooves (1-2) are respectively located on the inner and outer walls of the main body (1) and are evenly distributed in an arc array.

3. The six-slot valve sleeve of a steering gear according to claim 1, characterized in that: The oil holes (201) are located on the inner wall of the oil tank (2) and are arranged on three horizontal planes.

4. A six-slot valve sleeve for a steering gear according to claim 1, characterized in that: An oil inlet groove (301) (2) is provided on the outer wall of the main body (1) corresponding to the oil inlet hole (3).

5. The six-slot valve sleeve of a steering gear according to claim 1, characterized in that: A groove (501) is provided on the inner wall of the main body (1) and below the oil groove (2); the groove (501) is connected to the oil return groove (4) via a plurality of through grooves (5).

6. A six-slot valve sleeve for a steering gear according to claim 5, characterized in that: The through grooves (5) and the oil grooves (2) are alternately arranged on the inner wall of the main body (1).

7. The six-slot valve sleeve of a steering gear according to claim 1, characterized in that: The axis of the central through hole is colinear with the axis of the main body (1).

8. The six-slot valve sleeve of a steering gear according to claim 1, characterized in that: Both end surfaces of the main body (1) are embedded with latch grooves (6).

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