Slide valve balance hole type leakage-proof steering booster shell

Abstract

The utility model discloses a slide valve balance hole type leakproof steering booster shell, and relates to the technical field of steering boosters, the slide valve balance hole type leakproof steering booster shell comprises an outer shell, two end covers and guide rollers, a slide valve is slidably installed in the outer shell, the surfaces of the two ends of the slide valve are both fixedly connected with the guide rollers, the two ends in the outer shell are both provided with annular pipe fitting grooves, and the guide rollers are fixedly connected with the annular pipe fitting grooves. And three clamping grooves are formed in the two annular pipe fitting grooves at equal intervals, and annular pipes are inserted into the two annular pipe fitting grooves. Due to the arrangement of the sealing structure, multiple sealing defensive lines are formed, hydraulic oil is effectively prevented from leaking, the spring buckles are matched with the buckle connecting grooves, the end cover and the outer shell are convenient to assemble and disassemble, the maintenance difficulty and cost are reduced, the hydraulic oil can generate heat due to friction and the like, the heat can be dissipated out in time through the heat dissipation fins, and the service life of the hydraulic oil is prolonged. And the working efficiency and the service life of the booster are prevented from being influenced by over-high hydraulic oil temperature.

Description

Technical Field

[0001] This utility model relates to the field of power steering technology, and in particular to a slide valve balance hole type leak-proof power steering housing. Background Technology

[0002] The power steering system is an important component of a car's steering system. Its main purpose is to provide additional assistance to the driver when steering, reducing the effort required to turn the steering wheel and improving driving comfort and convenience. The effect of the power steering system is particularly noticeable in situations requiring frequent and significant steering wheel movements, such as low-speed driving and parking.

[0003] However, existing power steering systems have some drawbacks. Traditional power steering system housings have poor sealing performance, making them prone to oil leaks. This not only reduces the power steering effect and affects driving safety, but also wastes hydraulic oil and increases operating costs. Furthermore, existing power steering systems have poor heat dissipation performance; after prolonged use, the internal hydraulic oil temperature rises, affecting the power steering system's efficiency and lifespan. Moreover, some power steering systems have inadequate structural designs, making component installation and disassembly difficult, which is detrimental to later maintenance and upkeep. Utility Model Content

[0004] The main purpose of this utility model is to provide a slide valve balance hole type anti-leakage power steering housing, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A slide valve balance hole type leak-proof power steering housing includes an outer shell, two end caps, and guide rollers. A slide valve is slidably installed inside the outer shell. Guide rollers are fixedly connected to both ends of the slide valve. Both ends of the inner shell have annular tube engaging grooves. Three locking grooves are equidistantly formed on each of the two annular tube engaging grooves. Annular tubes are inserted into each of the two annular tube engaging grooves. End caps are fixedly connected to opposite ends of the two annular tubes. Annular rubber hydraulic bladders are fixedly connected to adjacent surfaces of the two end caps. Three locking mechanisms are fixedly installed at equal intervals on the outer surface of the rubber hydraulic bladder. Each locking mechanism includes a plug block, an inclined surface, and a connecting rib. A connecting rib is fixedly connected between one side surface of the plug block and the annular rubber hydraulic bladder. An inclined surface is provided on one side surface of the plug block. One end of the annular rubber hydraulic bladder is sealed and bonded to the inner surface of one end of the annular tube. The three locking grooves on the same end correspond to and are adapted to the positions of the corresponding plug blocks. Three sliding limiting grooves are provided at equal intervals on both annular tubes. The six plug blocks are slidably installed through the corresponding sliding limiting grooves.

[0007] Preferably, an inner sealing ring is installed between one side surface of each of the two annular tube fitting grooves and the annular tube, and a sealing gasket is installed between the outer shell and the two end caps.

[0008] Preferably, the annular rubber hydraulic bladder has a through groove inside, and the annular rubber hydraulic bladder is sealed and bonded to one end of the end cap.

[0009] Preferably, the guide rollers slide through the middle of both end caps, and a sealing assembly is installed between the two guide rollers and the end caps.

[0010] Preferably, hydraulic connection ports are installed through both ends of the outer shell near the annular tube fitting groove, and partitions are installed at both ends of the outer shell near the annular tube fitting groove. Several balance holes are provided at equal intervals on both end caps, and both guide rollers slide through the corresponding partitions.

[0011] Preferably, both sides of the two end caps are provided with snap-fit ​​connection grooves, both ends of the two outer shells are provided with spring snaps, the four spring snaps correspond to and fit the snap-fit ​​connection grooves, and heat dissipation fins are provided on the outer surface of the outer shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Excellent sealing and leak-proof performance: A sealing gasket is installed between the outer shell and the end cap, an inner sealing ring is installed between the annular tube fitting groove and the annular tube, and a sealing assembly is installed between the two guide rollers and the end cap. These sealing structures form multiple lines of defense, effectively preventing hydraulic oil leakage. The engaging mechanism on the annular rubber hydraulic bladder matches the engaging groove on the annular tube fitting groove, further enhancing the sealing effect, ensuring the stability of the booster's internal hydraulic system, avoiding reduced booster performance and safety hazards caused by oil leakage, and improving driving safety and reliability.

[0014] The well-designed structure features guide rollers fixedly connected to both ends of the spool valve, with the guide rollers sliding through the center of both end caps. This ensures smoother sliding of the spool valve within the housing, guaranteeing precise power steering. Hydraulic connection ports at both ends of the housing facilitate the input and output of hydraulic oil, and baffles guide the flow of hydraulic oil effectively. Balance holes on the end caps help balance internal pressure, ensuring stable operation of the power steering system under various conditions. Furthermore, the combination of spring clips and clip-connecting grooves facilitates easy installation and removal of the end caps from the housing, reducing maintenance difficulty and costs.

[0015] Excellent heat dissipation performance: The outer surface of the housing is equipped with heat dissipation fins, which increase the heat dissipation area and accelerate the heat dissipation rate. During the operation of the power steering, the hydraulic oil generates heat due to friction, etc. The heat dissipation fins can dissipate this heat in a timely manner, preventing the hydraulic oil temperature from becoming too high and affecting the working efficiency and service life of the power steering, thus ensuring the stability and reliability of the power steering during long-term use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the slide valve balance hole type anti-leakage power steering housing of this utility model;

[0017] Figure 2 This is a front view structural diagram of the housing of the slide valve balance hole type anti-leakage power steering device of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the outer shell and the end cap of the slide valve balance hole type anti-leakage power steering device of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the slide valve of the balance hole type anti-leakage steering power steering housing of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the sliding valve balance hole type anti-leakage steering power steering housing locking mechanism of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the annular tube of the slide valve balance hole type anti-leakage steering booster housing of this utility model;

[0022] Figure 7 This is a partial cross-sectional view of the outer shell of the slide valve balance hole type anti-leakage steering booster housing of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Heat dissipation fins; 3. Guide roller; 4. Hydraulic connection port; 5. Spring snap-fit; 6. End cap; 7. Engaging mechanism; 71. Insertion block; 72. Inclined surface; 73. Connecting rib; 8. Annular tube; 9. Annular tube fitting groove; 10. Sealing assembly; 11. Snap-fit ​​connection groove; 12. Inner sealing ring; 13. Sealing gasket; 14. Engaging groove; 15. Slide valve; 16. Partition plate; 17. Balance hole; 18. Annular rubber hydraulic bladder; 19. Sliding limit groove. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-7As shown, the slide valve balance hole type anti-leakage power steering housing is characterized by: including an outer shell 1, two end caps 6, and guide rollers 3; a slide valve 15 is slidably installed inside the outer shell 1; guide rollers 3 are fixedly connected to both ends of the slide valve 15; annular tube fitting grooves 9 are provided at both ends of the inner shell 1; three locking grooves 14 are equally spaced on each of the two annular tube fitting grooves 9; annular tubes 8 are inserted into each of the two annular tube fitting grooves 9; end caps 6 are fixedly connected to opposite ends of the two annular tubes 8; and annular rubber hydraulic bladders 18 are fixedly connected to adjacent surfaces of the two end caps 6. Three locking mechanisms 7 are fixedly installed at equal intervals on the outer surface of the ring-shaped rubber hydraulic bladder 18. Each locking mechanism 7 includes a plug-in block 71, an inclined surface 72, and a connecting rib 73. A connecting rib 73 is fixedly connected between one side surface of the plug-in block 71 and the ring-shaped rubber hydraulic bladder 18. An inclined surface 72 is provided on one side surface of the plug-in block 71. One end of the ring-shaped rubber hydraulic bladder 18 is sealed and bonded to the inner surface of one end of the ring tube 8. The three locking grooves 14 on the same end correspond to and are adapted to the corresponding plug-in blocks 71. Three sliding limit grooves 19 are provided at equal intervals on both ring tubes 8. The six plug-in blocks 71 are slidably installed in the corresponding sliding limit grooves 19.

[0026] In this embodiment, an inner sealing ring 12 is installed between one side surface of each of the two annular tube mating grooves 9 and the annular tube 8, and a sealing gasket 13 is installed between the outer shell 1 and the two end caps 6. The outer shell 1, as the main structure of the power steering housing, is used to install and support internal components such as the spool valve, guide roller, and annular tube. The end caps 6 close both ends of the outer shell 1, fix the annular rubber hydraulic bladder 18 and the guide roller 3, and are connected to the outer shell 1 via snap-fit ​​connecting grooves 11. The guide roller 3 guides the spool valve 15 to slide inside the outer shell 1, ensuring the smoothness and accuracy of the spool valve's movement, and can also be connected to an external steering tire interface. The spool valve 15 controls the flow direction and pressure of the hydraulic oil through sliding, thus achieving the power steering function.

[0027] In this embodiment, the annular rubber hydraulic bladder 18 has a through groove inside, and the annular rubber hydraulic bladder 18 is sealed and adhered to one end of the end cap 6. The annular tube fitting groove 9 is used to install and fix the annular tube 8, ensuring a tight connection between the annular tube 8 and the outer shell 1. The annular tube 8 serves as a channel for hydraulic oil, connecting the outer shell 1 and the end cap 6, ensuring the normal operation of the hydraulic system.

[0028] The annular rubber hydraulic bladder 18 absorbs pressure fluctuations in the hydraulic system through elastic deformation, preventing hydraulic shock and leakage. Its deformation causes the corresponding insertion block 71 to deviate, resulting in a tighter connection between the end cap 6 and the outer shell 1 as the oil pressure increases. The locking mechanism 7, through the insertion block 71 and the inclined surface 72 engaging with the locking groove 14, ensures a tight connection between the annular rubber hydraulic bladder 18 and the outer shell 1. The inner sealing ring 12 prevents hydraulic oil from leaking from the gap between the annular tube 8 and the annular tube mating groove 9. The sealing gasket 13 prevents hydraulic oil from leaking from the gap between the outer shell 1 and the end cap 6. The sealing assembly 10 prevents hydraulic oil from leaking from the gap between the guide roller 3 and the end cap 6.

[0029] In this embodiment, the guide rollers 3 slide through the middle of both end caps 6, and a sealing assembly 10 is installed between the two guide rollers 3 and the end caps 6.

[0030] In this embodiment, hydraulic connection ports 4 are installed through both ends of the outer shell 1 near the annular tube fitting groove 9, and partitions 16 are installed at both ends of the outer shell 1 near the annular tube fitting groove 9. Several balance holes 17 are provided at equal intervals on both end caps 6, and both guide rollers 3 slide through the corresponding partitions 16.

[0031] In this embodiment, both sides of the two end caps 6 are provided with snap-fit ​​connection grooves 11, and both ends of the two outer shells 1 are equipped with spring clips 5. The four spring clips 5 correspond to and fit with the snap-fit ​​connection grooves 11. The outer surface of the outer shell 1 is equipped with heat dissipation fins 2. The hydraulic connection port 4 connects to the external hydraulic system for inputting and outputting hydraulic oil. The partition 16 separates the internal space of the outer shell 1 to ensure the flow direction and pressure distribution of the hydraulic oil. The balance hole 17 adjusts the pressure balance of the hydraulic system to prevent excessively high or low pressure. The snap-fit ​​connection grooves 11 cooperate with the spring clips 5 to fix the connection between the end caps 6 and the outer shell 1. The spring clips 5 fix the connection between the end caps 6 and the outer shell 1 with elastic force, facilitating quick disassembly and installation. The heat dissipation fins 2 increase the heat dissipation area of ​​the outer shell 1, improve heat dissipation efficiency, and prevent overheating.

[0032] Working principle: When the driver performs a steering operation, hydraulic oil enters the booster through the hydraulic connection ports 4 at both ends of the outer casing 1. The hydraulic oil first enters the annular pipe 8. Due to the sealed connection between the annular pipe 8 and the annular rubber hydraulic bladder 18, the hydraulic oil exerts pressure on the annular rubber hydraulic bladder 18. The insertion block 71 of the engaging mechanism 7 on the annular rubber hydraulic bladder 18 engages with the engaging groove 14 on the engaging groove 9 of the annular pipe, ensuring the stability of the annular rubber hydraulic bladder 18 under hydraulic pressure.

[0033] As the hydraulic oil pressure changes, the spool valve 15 slides inside the housing 1. The guide rollers 3 at both ends of the spool valve 15 slide within the end cap 6, providing guidance and support to ensure the smoothness and precision of the spool valve 15's sliding. The baffle 16 guides the flow of hydraulic oil, enabling it to flow along the designed path and providing steering assistance.

[0034] The balance hole 17 on the end cap 6 balances the internal pressure of the booster, preventing excessively high or low pressure from affecting the boosting effect. The sealing assembly 10, sealing gasket 13, and inner sealing ring 12 effectively prevent hydraulic oil leakage, ensuring the sealing and stability of the booster's internal hydraulic system. The engagement of the spring clip 5 and the clip connecting groove 11 securely connects the end cap 6 to the outer casing 1, facilitating later maintenance and repair. The heat dissipation fins 2 on the outer surface of the outer casing 1 effectively dissipate the heat generated by the hydraulic oil, ensuring the booster operates at a suitable temperature.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spool valve balanced orifice type leakage prevention power steering gear housing, characterized by: Including outer casing (1), two end covers (6) and guide roller (3), the inside of the outer casing (1) is slidably installed with slide valve (15), the both ends surface of the slide valve (15) is fixedly connected with guide roller (3), the inside of the outer casing (1) both ends is equipped with annular pipe fitting groove (9), two the annular pipe fitting groove (9) all are equally spaced and are provided with three clamping grooves (14), two the annular pipe fitting groove (9) are inserted and installed with annular pipe (8), two the annular pipe (8) opposite end is fixedly connected with end cover (6), two the end cover (6) adjacent one side surface is fixedly connected with annular rubber hydraulic bag (18), two the annular rubber hydraulic bag (18) outer surface is equally spaced and is fixedly installed with three clamping mechanism (7), the clamping mechanism (7) includes plug-in block (71), inclined plane (72) and connecting rib (73), the one side surface of the plug-in block (71) and annular rubber hydraulic bag (18) between fixedly connected with connecting rib (73), the one side surface of the plug-in block (71) is equipped with inclined plane (72), the one end of the annular rubber hydraulic bag (18) and the inner surface of the one end of the annular pipe (8) are sealed and adhered, the three clamping grooves (14) of same end are respectively with corresponding plug-in block (71) position corresponding and adaptation, two the annular pipe ((8) on all are equally spaced and are provided with three sliding limit grooves (19), six plug-in blocks (71) are respectively slidably penetrated and installed in corresponding sliding limit grooves (19).

2. The spool valve balanced orifice type leak prevention steering gear housing according to claim 1, characterized by: Two the annular pipe fitting groove (9) one side surface and annular pipe (8) between all are installed with inner sealing ring (12), the outer casing (1) and two end covers (6) between all are installed with sealing gasket (13).

3. The spool valve balanced orifice type leak prevention steering gear housing according to claim 1, characterized by: The annular rubber hydraulic bag (18) is provided with a through groove, and the annular rubber hydraulic bag (18) and the end cover (6) are sealed and adhered at one end.

4. The spool valve balanced orifice type leak prevention steering gear housing according to claim 1, characterized by: Two the end cover (6) middle part is slidably penetrated guide roller (3), and the sealing assembly (10) is installed between the two guide rollers (3) and the end cover (6).

5. The spool valve balanced orifice type leak prevention steering gear housing according to claim 1, characterized by: The hydraulic connection port (4) is installed at both ends of the outer casing (1) near the annular pipe fitting groove (9), and the partition plate (16) is installed at both ends of the outer casing (1) near the annular pipe fitting groove (9). A plurality of balance holes (17) are equally arranged on the two partition plates (16), and the two guide rollers (3) are slidably penetrated through the corresponding partition plates (16).

6. The spool valve balanced orifice type leak prevention steering gear housing according to claim 1, characterized by: The buckle connection grooves (11) are formed on the two side surfaces of the two end covers (6), and the spring buckles (5) are installed on the two side surfaces of the two outer casings (1). Four spring buckles (5) are corresponding and matched with the buckle connection grooves (11), and the heat dissipation fins (2) are installed on the outer surface of the outer casing (1).

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