Hydraulic valve for automobile

Abstract

The utility model relates to the technical field of hydraulic valves, and discloses a hydraulic valve for an automobile, which comprises a main body component, a valve body, a valve core and a moving shaft, the valve core is positioned in the valve body, and the moving shaft is fixed with the valve core; the sealing assembly is located on the valve element and comprises a sealing ring fixed to the valve element, an expansion piece located in the valve element and a trigger piece arranged on one side of the expansion piece. The hydraulic valve has the advantages that by arranging the sealing assembly, when the hydraulic valve is in a working state, the expansion assembly can be triggered to extrude the sealing ring on the valve element, so that the gap between the valve element and the inner wall of the valve seat can be better filled with the sealing ring, and hydraulic oil leakage is avoided; the sealing ring is not extruded, so that the stress and friction of the sealing ring in non-working time can be reduced, the aging and abrasion speed of the sealing ring is reduced, and the service life of the sealing ring is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve technical field, especially a hydraulic valve for automobile. BACKGROUND

[0002] In the hydraulic system of the automobile, the hydraulic valve plays a vital role, it can accurately control the flow direction, pressure and flow of hydraulic oil, thereby ensuring the normal operation of each hydraulic execution component of the automobile. Among them, the cooperation of the valve core and the valve seat is the key link for the hydraulic valve to realize its function. When the sealing ring on the valve core slightly decreases in sealing performance, there will be a small gap between the valve core and the valve seat, which will cause the leakage of hydraulic oil to occur, thereby causing the brake pressure to be insufficient, which seriously affects the driving safety. SUMMARY

[0003] In view of the above and / or existing problems in the hydraulic valve for automobile, the utility model is proposed.

[0004] Therefore, the problem to be solved by the utility model is that the sealing ring of the hydraulic valve lacks sealing compensation.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a hydraulic valve for automobile, comprising a main body assembly, a valve body, a valve core and a moving shaft, the valve core is located in the valve body, and the moving shaft is fixed with the valve core.

[0006] A sealing assembly is located on the valve core and comprises a sealing ring fixed on the valve core, an expansion piece located in the valve core and a trigger piece arranged on one side of the expansion piece. The trigger piece comprises a circular plate, a moving column and a first spring. The circular plate is arranged on one side of the valve core, the moving column is fixed on one side of the circular plate, a first moving groove is formed on the valve core, the moving column slides in the first moving groove, and the two ends of the first spring are fixed with the valve core and the circular plate respectively.

[0007] As a preferred scheme of the utility model hydraulic valve for automobile, wherein: the expansion piece comprises an arc-shaped plate and a moving block, an annular groove is formed on the valve core, the arc-shaped plate is located in the annular groove, one side of the arc-shaped plate is attached to the sealing ring, and the moving block is fixed on one side of the arc-shaped plate.

[0008] As a preferred scheme of the utility model hydraulic valve for automobile, wherein: one end of the moving column is inclined, a stress surface is arranged on the moving block, the stress surface is inclined, and the moving column is in contact with the stress surface.

[0009] As a preferred scheme of the automobile hydraulic valve, the arc-shaped plate is internally provided with a sliding groove, the sliding groove is internally provided with an expansion block, two expansion blocks are arranged on one side of the arc-shaped plate, and a second spring is arranged between the two expansion blocks.

[0010] As a preferred scheme of the automobile hydraulic valve, one side of the valve core is fixedly provided with a rubber sleeve, and the circular plate and the first spring are arranged in the rubber sleeve.

[0011] As a preferred scheme of the automobile hydraulic valve, an installation groove is arranged on the valve core, and the sealing ring is fixed to the inner wall of the installation groove.

[0012] As a preferred scheme of the automobile hydraulic valve, the installation groove is communicated with the annular groove.

[0013] As a preferred scheme of the automobile hydraulic valve, the number of the arc-shaped plates and the number of the moving blocks are four, the number of the moving columns in the trigger is four, and the number of the triggers is two groups and is arranged on two sides of the valve core.

[0014] As a preferred scheme of the automobile hydraulic valve, the valve body is provided with an inlet pipe, a first outlet pipe and a second outlet pipe.

[0015] As a preferred scheme of the automobile hydraulic valve, one side of the valve body is provided with a piston and a hydraulic rod, the first outlet pipe and the second outlet pipe are connected with the piston, and the hydraulic rod is movably connected to one side of the piston.

[0016] The automobile hydraulic valve has the beneficial effects that: when the hydraulic valve is in a working state, the expansion assembly can be triggered to extrude the sealing ring on the valve core, so that the sealing ring can better fill the gap between the valve core and the inner wall of the valve seat, thereby avoiding leakage of hydraulic oil; when the hydraulic valve is not in a working state, the sealing ring is not extruded, thereby reducing the stress and friction of the sealing ring in a non-working time, reducing the aging and wear speed of the sealing ring, and significantly prolonging the service life of the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0018] Figure 1 is a whole structure diagram of the hydraulic valve for automobile.

[0019] Figure 2 is a valve body sectional structure diagram of the hydraulic valve for automobile.

[0020] Figure 3 is a spool structure diagram of the hydraulic valve for automobile.

[0021] Figure 4 is a spool sectional structure diagram of the hydraulic valve for automobile.

[0022] Figure 5 is a telescopic plate sectional structure diagram of the hydraulic valve for automobile. Figure 4 is a local enlarged structure diagram of A in the middle.

[0023] Figure 6 is an arc plate sectional structure diagram of the hydraulic valve for automobile.

[0024] Figure 7 is an arc plate sectional structure diagram of the hydraulic valve for automobile. DETAILED DESCRIPTION

[0025] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0026] In the following description, a lot of specific details are set forth in order to facilitate a full and complete understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0027] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0028] Embodiment 1

[0029] Reference Figures 1-7For the first embodiment of the utility model, the embodiment provides a hydraulic valve for automobile, the hydraulic valve for automobile includes main body assembly 100, including valve body 101, valve core 102 and moving shaft 103, valve core 102 is located in valve body 101, moving shaft 103 is fixed with valve core 102, the channel 101-4 of a certain size is arranged in valve body 101, the size of valve core 102 corresponds with the channel 101-4, and valve core 102 slides in the channel 101-4 in valve body 101, the movement of moving shaft 103 can drive valve core 102 to move, changes the flow direction of hydraulic oil by the movement of valve core 102 in the slot, to realize the direction, pressure and flow control of hydraulic system, this is prior art, and the present scheme does not make superfluous repetition, and the working principle can be clearly known by the person skilled in the art.

[0030] Sealing assembly 200 is located on valve core 102, including sealing ring 201 fixed on valve core 102, expansion piece 202 located in valve core 102 and trigger piece 203 arranged on one side of expansion piece 202, sealing ring 201 is used to seal the gap between channel 101-4 in valve body 101 and valve core 102, avoids the occurrence of oil leakage, expansion piece 202 is used to apply a pushing force to sealing ring 201, so that sealing ring 201 deforms, further close to the inner wall of channel 101-4 in valve body 101, to strengthen the sealing effect, trigger piece 203 cooperates with expansion piece 202, so that sealing ring 201 is extruded in the working process of hydraulic valve, and sealing ring 201 is not extruded in the non-working state, to prolong the service life of sealing ring 201.

[0031] Trigger piece 203 includes round plate 203a, moving column 203b and first spring 203c, round plate 203a is arranged on one side of valve core 102, and round plate 203a is used to detect the flow direction of liquid oil in the flow passage of valve body 101, so as to trigger expansion piece 202 to make corresponding adjustment, moving column 203b is fixed on one side of round plate 203a, and the movement of round plate 203a can drive moving column 203b to move, first moving groove 102-1 is formed in valve core 102, and moving column 203b slides in first moving groove 102-1, the two ends of first spring 203c are fixed with valve core 102 and round plate 203a respectively, the elastic force of first spring 203c is very small, first spring 203c continuously applies a pushing force to round plate 203a, to ensure that round plate 203a does not move towards valve core 102 under the action of no other external force.

[0032] When liquid oil flows in the channel 101-4 in valve body 101, if the outlet of the flow passage is limited, with the inflow of liquid oil, round plate 203a will be subjected to the pressure of liquid oil, so that first spring 203c is compressed, at this time, round plate 203a will drive moving column 203b to move along the direction of first moving groove 102-1 and close to valve core 102.

[0033] Embodiment 2

[0034] With reference to Figures 1-7 For the second embodiment of the utility model, the embodiment is based on the previous embodiment.

[0035] Specifically, the expansion piece 202 includes an arc-shaped plate 202a and a moving block 202b, the valve core 102 is provided with an annular groove 102-2, the arc-shaped plate 202a is located in the annular groove 102-2, one side of the arc-shaped plate 202a is attached to the sealing ring 201, the arc-shaped plate 202a is used to push the sealing ring 201 to make it more closely attached to the inner wall of the passage 101-4 in the valve body 101, the moving block 202b is fixed to one side of the arc-shaped plate 202a, the moving of the moving block 202b can drive the arc-shaped plate 202a to move synchronously, the valve core 102 is provided with a second moving groove 102-4, and the moving block 202b slides in the second moving groove 102-4.

[0036] Specifically, one end of the moving column 203b is inclined, the moving block 202b is provided with a stress surface 202b-1, the stress surface 202b-1 is inclined, and the moving column 203b is in contact with the stress surface 202b-1.

[0037] When the circular plate 203a is subjected to the pressure of liquid oil, the first spring 203c is compressed, the circular plate 203a drives the moving column 203b to move along the first moving groove 102-1 and approach the valve core 102, the inclined surface of the moving column 203b is in contact with the stress surface 202b-1 of the moving block 202b and is extruded, so that the moving block 202b moves along the second moving groove 102-4 and moves in the direction of approaching the sealing ring 201, and then the arc-shaped plate 202a extrudes the sealing ring 201, so that the sealing ring 201 is more closely attached to the inner wall of the passage 101-4, thereby improving the sealing performance and avoiding the situation that the brake pressure is insufficient and the driving safety is affected.

[0038] Specifically, the arc-shaped plate 202a is provided with a sliding groove 202a-1, the sliding groove 202a-1 is provided with an expansion block 202c, one side of the arc-shaped plate 202a is provided with two expansion blocks 202c, and the second spring 202d is arranged between the two expansion blocks 202c.

[0039] The expansion block 202c is arranged, so that when the arc-shaped plate 202a approaches the sealing ring 201, the expansion block 202c and the arc-shaped plate 202a can push each part of the sealing ring 201 to be close to the inner wall of the passage 101-4.

[0040] The second spring 202d is fixed at both ends with two telescopic blocks 202c, in the initial state, the second spring 202d is in a compressed state, with the arc-shaped plate 202a close to the sealing ring 201 and extrude, the sealing ring 201 will be deformed, at this time, under the action of the second spring 202d, the length of the telescopic block 202c in the sliding groove 202a-1 will be smaller, so as to ensure that the sealing ring 201 can be pushed to each part close to the inner wall of the channel 101-4.

[0041] Specifically, the valve core 102 is fixed with a rubber sleeve 203d on one side, and the circular plate 203a and the first spring 203c are located in the rubber sleeve 203d.

[0042] By setting the rubber sleeve 203d, the circular plate 203a and the first spring 203c are wrapped in, so as to ensure that the liquid oil cannot enter and affect the movement of the circular plate 203a.

[0043] Specifically, the valve core 102 is provided with a mounting groove 102-3, the sealing ring 201 is fixed with the inner wall of the mounting groove 102-3, the mounting groove 102-3 is annular, and the sealing ring 201 is fixed on both sides of the mounting groove 102-3. When the sealing ring 201 is not extruded, the sealing ring 201 is still attached to the inner wall of the channel 101-4, and has sealing property, and when the sealing ring 201 is extruded by the arc-shaped plate 202a, the sealing ring 201 is more closely attached to the channel 101-4.

[0044] Embodiment 3

[0045] Refer to Figures 1-7 For the third embodiment of the utility model, the embodiment is based on the previous two embodiments.

[0046] Specifically, the mounting groove 102-3 is communicated with the annular groove 102-2.

[0047] Because the two are communicated, when the circular plate 203a is subjected to the pressure of the liquid oil, the moving column 203b moves, and then the moving block 202b and the arc-shaped plate 202a are close to the sealing ring 201, one end of the arc-shaped plate 202a will move into the mounting groove 102-3, so that the middle part of the sealing ring 201 expands outward, and is more closely attached to the inner wall of the channel 101-4 in the valve body 101, so as to improve the sealing property.

[0048] Specifically, the number of the arc-shaped plate 202a and the moving block 202b is four, the number of the moving column 203b in the trigger 203 is four, and the number of the trigger 203 is two groups, which are located on both sides of the valve core 102.

[0049] By setting four groups of arc-shaped plates 202a and moving blocks 202b, it is ensured that the middle part of the sealing ring 201 can be more closely attached to the channel 101-4 under the pushing of the arc-shaped plate 202a.

[0050] Two groups of trigger pieces 203 are arranged to trigger and expand the sealing ring 201 to improve the sealing performance when the hydraulic oil flows in different directions.

[0051] Specifically, the valve body 101 is provided with an inlet pipe 101-1, a first outlet pipe 101-2 and a second outlet pipe 101-3.

[0052] The liquid oil flows into the channel 101-4 of the valve body 101 from the inlet pipe 101-1, and then flows out of the valve body 101 from the first outlet pipe 101-2 or the second outlet pipe 101-3.

[0053] When the liquid oil flows into the valve body 101 from the inlet pipe 101-1 and flows out of the valve body 101 from the first outlet pipe 101-2, the trigger piece 203 located on the side close to the first outlet pipe 101-2 will be triggered, and the corresponding circular plate 203a of the trigger piece 203 will be pressed by the liquid oil, so that the circular plate 203a moves towards the valve core 102, and the sealing ring 201 is tightly attached to the inner wall of the channel 101-4; when the liquid oil flows into the valve body 101 from the inlet pipe 101-1 and flows out of the valve body 101 from the second outlet pipe 101-3, the circular plate 203a located on the side close to the second outlet pipe 101-3 is pressed by the liquid oil.

[0054] Specifically, the valve body 101 is provided with a piston 104 and a hydraulic rod 105 on one side, the first outlet pipe 101-2 and the second outlet pipe 101-3 are connected with the piston 104, and the hydraulic rod 105 is movably connected with the piston rod of the piston 104.

[0055] The liquid oil flows into the piston 104 from the first outlet pipe 101-2 and the second outlet pipe 101-3, and a pressure is generated on the piston block. The movement of the piston block requires a large pressure of the liquid oil, and in this process, the large pressure of the liquid oil is applied to both sides of the valve core 102. When the piston block is pushed, the hydraulic rod 105 is correspondingly moved. This is the prior art, and the working principle is clear to those skilled in the art.

[0056] When the sealing performance of the sealing ring 201 is slightly reduced, and the oil leakage is extremely small, the liquid oil still applies a large pressure to the circular plate 203a on one side of the valve core 102, so that the sealing ring 201 is tightly attached to the inner wall of the channel 101-4, thereby sealingly compensating to a certain extent.

[0057] In use, when the hydraulic valve is started, the liquid oil flows into the piston 104 from the inlet pipe 101-1 and flows out of the valve body 101 from the first outlet pipe 101-2, the liquid oil flows into the piston 104 and generates a large pressure on the piston block, and the piston block is moved, and at the same time, the large pressure of the liquid oil is applied to the circular plate 203a on the side close to the first outlet pipe 101-2.

[0058] When the circular plate 203a is pressed by the liquid oil, the first spring 203c is compressed, and when the circular plate 203a drives the moving column 203b to move towards the valve core 102 along the first moving groove 102-1, the moving column 203b will be in contact with the force receiving surface 202b-1 of the moving block 202b and be pressed, so as to drive the moving block 202b to move towards the sealing ring 201 along the second moving groove 102-4, and then the arc-shaped plate 202a presses the sealing ring 201, so that the sealing ring 201 is more tightly attached to the inner wall of the passage 101-4, thereby improving the sealing performance and avoiding the situation that the brake pressure is insufficient due to oil leakage, which affects the driving safety.

[0059] When the hydraulic valve stops working, the circular plate 203a will not be pressed by the liquid oil, at this time, the first spring 203c is restored, and then drives the circular plate 203a and the moving column 203b to reset, at this time, the sealing ring 201 is not pressed, so that the sealing ring 201 is restored, at this time, the sealing ring 201 will exert a reverse pressure on the arc-shaped plate 202a, and then drive the arc-shaped plate 202a and the moving block 202b to reset.

[0060] When the liquid oil flows into the inlet pipe 101-1 and flows out from the second outlet pipe 101-3, the sealing ring 201 is more tightly attached to the inner wall of the passage 101-4 when the hydraulic valve works, and no additional thrust is exerted on the sealing ring 201 in the non-working state, thereby improving the service life of the sealing ring 201.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A hydraulic valve for an automobile, characterized by: The utility model relates to a valve, including, The main part (100) includes the valve body (101), the valve core (102) and the moving shaft (103), the valve core (102) is located in the valve body (101), the moving shaft (103) is fixed with the valve core (102), The sealing assembly (200) is located on the valve core (102) and includes the sealing ring (201) fixed on the valve core (102), the expansion piece (202) located in the valve core (102) and the trigger piece (203) arranged on one side of the expansion piece (202), the trigger piece (203) includes the round plate (203a), the moving column (203b) and the first spring (203c), the round plate (203a) is arranged on one side of the valve core (102), the moving column (203b) is fixed on one side of the round plate (203a), the valve core (102) is provided with the first moving groove (102-1), the moving column (203b) is slid in the first moving groove (102-1), and the two ends of the first spring (203c) are fixed with the valve core (102) and the round plate (203a) respectively.

2. The hydraulic valve for an automobile according to claim 1, characterized by: The expansion piece (202) includes the arc plate (202a) and the moving block (202b), the valve core (102) is provided with the annular groove (102-2), the arc plate (202a) is located in the annular groove (102-2), one side of the arc plate (202a) is attached to the sealing ring (201), and the moving block (202b) is fixed on one side of the arc plate (202a).

3. The hydraulic valve for an automobile according to claim 2, wherein: One end of the moving column (203b) is inclined, the moving block (202b) is provided with the stress surface (202b-1), the stress surface (202b-1) is inclined, and the moving column (203b) is in contact with the stress surface (202b-1).

4. The hydraulic valve for an automobile according to claim 2 or 3, characterized in that: The arc plate (202a) is provided with the sliding groove (202a-1) in, the sliding groove (202a-1) is provided with the telescopic block (202c), one side of the arc plate (202a) is provided with two telescopic blocks (202c), and the second spring (202d) is arranged between the two telescopic blocks (202c).

5. The hydraulic valve for an automobile according to claim 4, wherein: The valve core (102) is fixed with the rubber sleeve (203d) on one side, and the round plate (203a) and the first spring (203c) are located in the rubber sleeve (203d).

6. The hydraulic valve for an automobile according to claim 5, wherein: The valve core (102) is provided with the mounting groove (102-3), and the sealing ring (201) is fixed with the inner wall of the mounting groove (102-3).

7. The hydraulic valve for an automobile according to claim 6, wherein: The mounting groove (102-3) is communicated with the annular groove (102-2).

8. The hydraulic valve for an automobile according to claim 6 or 7, characterized by: The number of the arc plate (202a) and the moving block (202b) is four, the number of the moving column (203b) in the trigger piece (203) is four, the number of the trigger piece (203) is two groups, and the trigger pieces are located on both sides of the valve core (102).

9. The hydraulic valve for an automobile according to claim 8, wherein: The valve body (101) is provided with an inlet pipe (101-1), a first outlet pipe (101-2) and a second outlet pipe (101-3).

10. The hydraulic valve for an automobile according to claim 9, wherein: One side of the valve body (101) is provided with a piston (104) and a hydraulic rod (105), the first outlet pipe (101-2) and the second outlet pipe (101-3) are connected with the piston (104), and the hydraulic rod (105) is movably connected to one side of the piston (104).

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