Valve sleeve for automobile hydraulic steering engine

Abstract

The utility model discloses a valve sleeve for an automobile hydraulic steering engine, which comprises a valve sleeve body, a steering shaft of the steering engine is movably connected inside the valve sleeve body, eight groups of uniformly distributed oil grooves are arranged on the inner wall of the valve sleeve body, and each oil groove comprises a bottom wall and straight side walls distributed on two sides of the bottom wall. Eight groups of oil grooves are formed in the valve sleeve body, an oil hole communicated with a steering shaft of the steering engine is formed in the surface of the bottom wall, a first annular groove and a second annular groove are fixedly formed in the two ends of the outer wall of the valve sleeve body, an insertion hole is formed in the surface of the steering shaft of the steering engine, and a sliding groove is formed in the surface of the valve sleeve body. The oil return capacity of the lower oil cavity of hydraulic oil is enhanced, the universality and the oil return efficiency are improved, meanwhile, the two sawtooth racks are connected with the driving gear in a meshed mode, the disassembly process of the valve sleeve and the steering shaft is simplified, and the disassembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering gears, in particular to a valve sleeve for automobile hydraulic steering gears. Background Art

[0002] The function of the steering gear is to appropriately transform the steering torque and steering angle from the steering wheel (mainly to reduce speed and increase torque), and then output it to the steering rod mechanism to make the car turn. Therefore, the steering gear is essentially a reduction transmission device. There are many types of steering gears, such as rack and pinion type, recirculating ball type, worm crank pin type, power steering, etc.

[0003] At present, the number of valve sleeve oil grooves in the existing valve sleeve is generally 6, and only the upper oil chamber can be returned, but the lower oil chamber cannot be returned. The oil return effect is poor and the versatility is poor. In addition, when the valve sleeve body and the steering shaft are disassembled, the size of the gasket is too small, which is very inconvenient to pull the gasket, greatly increasing the difficulty of disassembly.

[0004] In view of this, research and improvement are carried out on the existing problems, and a valve sleeve for an automobile hydraulic steering machine is provided. By setting 8 groups of valve sleeve oil grooves, the oil return efficiency is improved, and a quick disassembly structure is provided to improve the disassembly efficiency of the valve sleeve and the steering shaft of the steering machine. The purpose is to solve the problem and improve the practical value through this technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a valve sleeve for an automobile hydraulic steering machine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a valve sleeve for a hydraulic steering machine of an automobile, comprising a valve sleeve body, the interior of the valve sleeve body is movably connected with a steering shaft of a steering machine, the inner wall of the valve sleeve body is provided with 8 groups of evenly distributed oil grooves, the oil groove comprises a bottom wall and straight side walls distributed on both sides of the bottom wall, the surface of the bottom wall is provided with oil holes connected with the steering shaft of the steering machine, the outer wall of the valve sleeve body is fixedly provided with a first annular groove and a second annular groove at both ends, the surface of the steering shaft of the steering machine is provided with a plug hole, the surface of the valve sleeve body is provided with a slide groove, the interior of the slide groove is slidably connected with a button, the bottom end of the button is fixedly connected with a connecting rod, one side of the connecting rod is fixedly connected with a sawtooth bar, one side of the sawtooth bar is provided with a driving gear, a movable block is provided on the side of the driving gear away from the connecting rod, the bottom of the movable block is fixedly connected with a plug rod, and the valve sleeve body is fixedly connected with the steering shaft of the steering machine through the plug hole and the plug rod.

[0007] As a further description of the above technical solution:

[0008] A through hole for the steering shaft of the steering gear to pass through is provided at the center of the valve sleeve body.

[0009] As a further description of the above technical solution:

[0010] The oil groove is in the shape of an elongated strip, the bottom wall is in the shape of an arc, and the axial direction of the bottom wall is perpendicular to the plane of the straight side wall.

[0011] As a further description of the above technical solution:

[0012] A first return spring is fixedly connected to the top of the slide slot, and one end of the first return spring is fixedly connected to the bottom of the connecting rod.

[0013] As a further description of the above technical solution:

[0014] The driving gear is fixedly mounted on one side of the slide slot through a bearing and is movably connected to the slide slot.

[0015] As a further description of the above technical solution:

[0016] A sawtooth bar is fixedly connected to one side of the movable block close to the driving gear, and the driving gear is meshedly connected with the sawtooth bars on both sides.

[0017] As a further description of the above technical solution:

[0018] A second return spring is fixedly connected to the top of the movable block, and limit blocks are provided on both sides of the outer side of the movable block adjacent to the sawtooth bar. A limit groove is provided at the position where the valve sleeve body contacts the limit block, and the movable block is slidably connected to the valve sleeve body through the limit block and the limit groove.

[0019] The utility model has the following beneficial effects:

[0020] In the utility model, the valve sleeve for the automobile hydraulic steering machine realizes the reverse movement between the connecting rod and the movable block by directly meshing and connecting two sawtooth bars and a driving gear, so that when unlocking, the valve sleeve body and the steering shaft of the steering machine can be disassembled by simply pressing a button inwards with the thumb. Compared with unlocking by pulling outwards, such a design greatly improves the disassembly efficiency and makes the disassembly and assembly between the valve sleeve body and the steering shaft of the steering machine more convenient. By adopting 8 valve sleeve oil grooves in the steering machine valve sleeve, the hydraulic oil can be returned to the lower oil chamber, so the versatility is stronger, the oil return efficiency is improved, and the performance of the hydraulic steering machine is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a valve sleeve for a hydraulic steering machine of an automobile proposed by the utility model;

[0022] Figure 2This is a schematic diagram of the overall cross-sectional structure of a valve sleeve for an automobile hydraulic steering machine proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the enlarged structure of part A of a valve sleeve for a hydraulic steering machine of an automobile proposed by the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the valve sleeve body structure of a valve sleeve for an automobile hydraulic steering machine.

[0025] Legend:

[0026] 1. Valve sleeve body; 2. Steering gear steering shaft; 3. Through hole; 4. Oil groove; 5. Bottom wall; 6. Straight side wall; 7. Oil hole; 8. First annular groove; 9. Second annular groove; 10. Insertion hole; 11. Slide groove; 12. Button; 13. Connecting rod; 14. Sawtooth bar; 15. First return spring; 16. Driving gear; 17. Movable block; 18. Insertion rod; 19. Limit block; 20. Limit groove; 21. Second return spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Reference Figure 1-4A valve sleeve for a hydraulic steering machine of an automobile comprises a valve sleeve body 1, wherein a steering shaft 2 of a steering machine is movable and connected inside the valve sleeve body 1, an inner wall of the valve sleeve body 1 is provided with a first annular groove 8 and a group of evenly distributed oil grooves 4, the oil groove 4 comprises a bottom wall 5 and straight side walls 6 distributed on both sides of the bottom wall 5, an oil hole 7 connected to the steering shaft 2 of the steering machine is provided on the surface of the bottom wall 5, a first annular groove 8 and a second annular groove 9 are fixedly provided at both ends of the outer wall of the valve sleeve body 1, a plug hole 10 is provided on the surface of the steering shaft 2 of the steering machine, a slide groove 11 is provided on the surface of the valve sleeve body 1, a button 12 is slidably connected inside the slide groove 11, a connecting rod 13 is fixedly connected to the bottom end of the button 12, a sawtooth bar 14 is fixedly connected to one side of the connecting rod 13, a driving gear 16 is arranged on one side of the sawtooth bar 14, a movable block 17 is arranged on the side of the driving gear 16 away from the connecting rod 13, a plug rod 18 is fixedly connected to the bottom of the movable block 17, and the valve sleeve body 1 is fixedly connected to the steering shaft 2 of the steering machine through the plug hole 10 and the plug rod 18.

[0030] Specifically, a through hole 3 for the steering shaft 2 of the steering gear to pass through is opened at the center of the valve sleeve body 1. The through hole 3 of the structure should ensure accurate alignment with the steering shaft 2 of the steering gear to achieve smooth penetration and rotation.

[0031] Specifically, the oil groove 4 is in the shape of an elongated strip, the bottom wall 5 is in the shape of an arc, and the axial direction of the bottom wall 5 is perpendicular to the plane of the straight side wall 6. The design of the elongated oil groove 4 helps to optimize the flow path of the hydraulic oil, reduce the turbulence and pressure loss of the fluid, and thus improve the efficiency of the hydraulic system.

[0032] Specifically, a first return spring 15 is fixedly connected to the top of the slide slot 11, and one end of the first return spring 15 is fixedly connected to the bottom of the connecting rod 13. This structure can quickly return the connecting rod 13 after operation through the first return spring 15.

[0033] Specifically, the driving gear 16 is fixedly mounted on one side of the slide groove 11 through a bearing and is movably connected to the slide groove 11. The use of this structural bearing can significantly reduce the friction of the gear during operation, extend the service life of the gear and the bearing, and improve the transmission efficiency.

[0034] Specifically, a sawtooth bar 14 is fixedly connected to one side of the movable block 17 close to the driving gear 16, and the driving gear 16 is meshed with the sawtooth bars 14 on both sides. The meshing of the sawtooth bars 14 on both sides of the structure with the driving gear 16 can ensure the synchronization of the movement on both sides.

[0035] Specifically, a second return spring 21 is fixedly connected to the top of the movable block 17. The setting of the second return spring 21 ensures that the movable block 17 can quickly and accurately return to the initial position after operation. Limit blocks 19 are provided on both sides of the outside of the movable block 17 adjacent to the serrated bar 14. A limit groove 20 is provided at the position where the valve sleeve body 1 contacts the limit block 19. The movable block 17 is slidably connected to the valve sleeve body 1 through the limit block 19 and the limit groove 20. The design of the limit block 19 and the limit groove 20 provides a mechanism for stable positioning of the movable block 17 and limiting its range of motion.

[0036] Working principle: When in use, the valve sleeve body 1 is sleeved on the outside of the steering gear steering shaft 2, and the oil groove 4 and the oil hole 7, the two sides of the oil groove 4 respectively form an oil outlet gap with the side of the steering shaft oil groove. When the steering gear steering shaft 2 is turned left, the oil outlet gap between the steering shaft oil groove of the steering gear steering shaft 2 on the left side and the oil groove 4 becomes larger, while the oil outlet gap between the steering shaft oil groove of the steering gear steering shaft 2 on the right side and the oil groove 4 is closed. The oil enters the left side and returns to the right side through the oil return groove 4. When turning right, the opposite is true. When installing the valve sleeve body 1 and the steering gear steering shaft 2, the steering gear steering shaft 2 is directly inserted into the inside of the valve sleeve body 1, and the steering gear steering shaft 2 is pushed to move toward the inside of the valve sleeve body 1 to reach After being in the appropriate position, the plug rod 18 and the socket 10 form a snap connection to achieve the snap connection between the valve sleeve body 1 and the steering shaft 2 of the steering gear. When disassembly is required, just press the button 12, and the serrated bar 14 on one side of the connecting rod 13 moves downward, driving the driving gear 16 to rotate, so that it drives the serrated bar 14 and the movable block 17 on one side of the movable block 17 to move upward, thereby driving the plug rod 18 to move upward and shrink to the inside of the valve sleeve body 1, thereby disengaging from the snap connection with the socket 10, and then taking out the steering shaft 2 of the steering gear to complete the disassembly control. The connecting rod 13 and the movable block 17 will return to their original positions under the action of the first return spring 15 and the second return spring 21 to facilitate the next snap connection.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve sleeve for a hydraulic steering machine of an automobile, comprising a valve sleeve body (1), characterized in that: The valve sleeve body (1) is movably connected to a steering shaft (2) of a steering gear. The inner wall of the valve sleeve body (1) is provided with 8 groups of evenly distributed oil grooves (4). The oil grooves (4) include a bottom wall (5) and straight side walls (6) distributed on both sides of the bottom wall (5). The surface of the bottom wall (5) is provided with an oil hole (7) connected to the steering shaft (2) of the steering gear. The outer wall of the valve sleeve body (1) is fixedly provided with a first annular groove (8) and a second annular groove (9) at both ends. The surface of the steering shaft (2) of the steering gear is provided with an insertion hole (10). The surface of the valve sleeve body (1) is provided with a sliding A groove (11) is provided, wherein a button (12) is slidably connected inside the sliding groove (11), a connecting rod (13) is fixedly connected to the bottom end of the button (12), a sawtooth bar (14) is fixedly connected to one side of the connecting rod (13), a driving gear (16) is provided on one side of the sawtooth bar (14), a movable block (17) is provided on the side of the driving gear (16) away from the connecting rod (13), a plug rod (18) is fixedly connected to the bottom of the movable block (17), and the valve sleeve body (1) is fixedly connected to the steering shaft (2) of the steering gear via the insertion hole (10) and the plug rod (18).

2. The valve sleeve for a hydraulic steering machine of an automobile according to claim 1, characterized in that: A through hole (3) for the steering shaft (2) of the steering gear to pass through is provided at the center of the valve sleeve body (1).

3. The valve sleeve for a hydraulic steering machine of an automobile according to claim 1, characterized in that: The oil groove (4) is in the shape of an elongated strip, the bottom wall (5) is in the shape of an arc, and the axial direction of the bottom wall (5) is perpendicular to the plane of the straight side wall (6).

4. The valve sleeve for a hydraulic steering machine of an automobile according to claim 1, characterized in that: A first return spring (15) is fixedly connected to the top of the slide groove (11), and one end of the first return spring (15) is fixedly connected to the bottom of the connecting rod (13).

5. The valve sleeve for automobile hydraulic steering machine according to claim 1, characterized in that: The driving gear (16) is fixedly mounted on one side of the slide groove (11) via a bearing and is movably connected to the slide groove (11).

6. The valve sleeve for a hydraulic steering machine of an automobile according to claim 1, characterized in that: A sawtooth bar (14) is fixedly connected to one side of the movable block (17) close to the driving gear (16), and the driving gear (16) is meshingly connected to the sawtooth bars (14) on both sides.

7. The valve sleeve for a hydraulic steering machine of an automobile according to claim 1, characterized in that: A second return spring (21) is fixedly connected to the top of the movable block (17); limit blocks (19) are provided on both sides of the outside of the movable block (17) adjacent to the sawtooth bar (14); a limit groove (20) is provided at a position where the valve sleeve body (1) contacts the limit block (19); and the movable block (17) is slidably connected to the valve sleeve body (1) via the limit block (19) and the limit groove (20).

Images