Valve guide system

Abstract

The utility model provides a valve guide system, which comprises an outer cylinder, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core and a spring-back valve core, and is characterized in that the outer cylinder is provided with a compression runner port and a spring-back runner port positioned in the same cross-sectional area of the outer cylinder; the inner cylinder is arranged in the outer cylinder in a penetrating mode, a compression flow dividing opening is formed in the inner cylinder, and a springback flow channel is formed between the inner cylinder and the outer cylinder; wherein a compression cavity and a springback cavity are formed between the outer barrel and the inner barrel, the compression flow dividing opening is communicated with the compression flow channel opening through the compression cavity, and the springback flow channel is communicated with the springback flow channel opening through the springback cavity. According to the valve guiding system, on the premise that the damping stroke of the piston is not lost, the problem that compression flow and rebound flow are separated at the same horizontal height of a double-valve shock absorber is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic braking, in particular to a valve guiding system. Background Art

[0002] The description in this part only provides background information related to the disclosure of the utility model, and does not constitute the prior art.

[0003] As Figure 1 shown, the existing double-valve shock absorber has a rebound valve 1' and a compression valve 2' located on the same side of the cylinder body 4'. The rebound valve 1' and the compression valve 2' are arranged in an overlapping manner. Among them, since the compression stroke and the rebound stroke of the double-valve shock absorber have different flow paths, two inner sleeves (i.e., the rebound cylinder 5' and the compression cylinder 6') are arranged in the cylinder body 4' in the axial direction of the double-valve shock absorber. These two inner sleeves are used for the hydraulic oil in the compression stroke and the rebound stroke to flow respectively. Among them, the rebound stroke of the double-valve shock absorber is that when the piston rod 3' is in the return stroke, the hydraulic oil is pushed into the hole 11' above between the cylinder body 4' and the rebound cylinder 5', and then the hydraulic oil flows into the rebound valve 1' and flows out of the double-valve shock absorber; the compression stroke of the double-valve shock absorber is that when the piston rod 3' is in the compression stroke, the hydraulic oil is pushed into the hole 21' below between the cylinder body 4' and the compression cylinder 6', and then the hydraulic oil flows into the compression valve 2' and flows back to the double-valve shock absorber in the reverse direction.

[0004] In some vehicles, there is no extra space in the suspension system around the shock absorber. Therefore, the double-valve shock absorber with two externally arranged valves arranged in an overlapping manner is no longer applicable to the existing vehicle suspension system.

[0005] In order to solve the application problem of the double-valve shock absorber in the existing vehicle suspension system, how to realize the face-to-face arrangement of two different externally arranged valves at the same horizontal height of the cylinder body 4' is an urgent problem to be solved by those skilled in the art.

[0006] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the utility model. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a valve guiding system, which solves the problem of separating the compression flow and the rebound flow at the same horizontal height in the double-valve shock absorber without losing the shock absorption stroke of the piston.

[0008] The above implementation purpose of the utility model is mainly achieved by the following technical solutions:

[0009] The present utility model provides a valve guiding system, comprising:

[0010] An outer cylinder, on which a compression flow port and a rebound flow port are provided at the same cross-sectional area of the outer cylinder;

[0011] An inner cylinder, which is inserted into the outer cylinder. A compression diversion port is provided on the inner cylinder, and a rebound flow channel is formed between the inner cylinder and the outer cylinder;

[0012] Wherein, a compression chamber and a rebound chamber are formed between the outer cylinder and the inner cylinder. The compression diversion port is communicated with the compression flow port through the compression chamber, and the rebound flow channel is communicated with the rebound flow port through the rebound chamber.

[0013] According to an embodiment of the present utility model, a piston rod is inserted into the inner cylinder. Along the compression stroke direction of the piston rod, the rebound chamber and the compression chamber are arranged in sequence.

[0014] According to an embodiment of the present utility model, a compression guiding channel is formed between the compression chamber and the compression flow port, and the compression guiding channel is inclined outward in the reverse direction of the compression stroke direction of the piston rod.

[0015] According to an embodiment of the present utility model, a rebound guiding channel is formed between the rebound chamber and the rebound flow port, and the rebound guiding channel is inclined outward along the compression stroke direction of the piston rod.

[0016] According to an embodiment of the present utility model, the valve guiding system further comprises a separation cylinder, which is inserted between the outer cylinder and the inner cylinder. The compression chamber and the rebound chamber are formed between the separation cylinder and the inner cylinder. A first sealing structure is arranged between the inner cylinder and the separation cylinder between the compression chamber and the rebound chamber.

[0017] According to an embodiment of the present utility model, a second sealing structure is arranged between the inner cylinder and the separation cylinder at the end of the compression stroke of the piston rod.

[0018] According to an embodiment of the present utility model, the first sealing structure is a sealing ring, and the second sealing structure is at least two sealing rings arranged in an overlapping manner.

[0019] According to an embodiment of the present utility model, the positions where the compression chamber is communicated with the compression flow port and where the rebound chamber is communicated with the rebound flow port are arranged opposite to each other along the diameter direction of the outer cylinder.

[0020] According to an embodiment of the present utility model, the area of the piston rod in contact with the fluid medium during the compression stroke is larger than the area of the piston rod in contact with the fluid medium during the rebound stroke.

[0021] According to an embodiment of the present utility model, positioners are respectively and sealingly provided between the separation cylinder and the compression fluid port and the rebound fluid port, and the positioners can respectively extend into the compression fluid port and the rebound fluid port.

[0022] Compared with the prior art, the technical solution of the present utility model has the following characteristics and advantages:

[0023] In the valve guiding system of the present utility model, the compression fluid port is used to connect the compression valve, and the rebound fluid port is used to connect the rebound valve. Since the compression fluid port and the rebound fluid port are arranged in the same cross-sectional area region of the outer cylinder, the rebound valve and the compression valve are arranged in a non-axis direction outside the valve guiding system, and the problem of flow division in the same cross-sectional area region of the compression stroke and the rebound stroke in the valve guiding system is solved without affecting the damping stroke. The valve guiding system has a simple structure and a reasonable space design, which provides a guarantee for its application in the vehicle suspension system. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a valve system in the prior art.

[0025] Figure 2 It is a schematic structure of the valve guiding system of the present utility model Figure 1 .

[0026] Figure 3 It is a schematic structure of the valve guiding system of the present utility model Figure 2 .

[0027] Figure 4 It is a schematic diagram of the fluid medium flow of the compression stroke and the rebound stroke of the valve guiding system of the present utility model.

[0028] Figure 5 It is a perspective view of the separation cylinder of the valve guiding system of the present utility model.

[0029] Explanation of the Reference Numerals in the Drawings:

[0030] 1. Outer cylinder; 11. Compression fluid port; 12. Rebound fluid port; 13. Annular space; 2. Inner cylinder; 21. Compression diversion port; 22. Rebound flow path; 3. Compression valve; 4. Rebound valve; 5. Separation cylinder; 51. Compression chamber; 511. Compression guiding channel; 52. Rebound chamber; 521. Rebound guiding channel; 6. Piston rod; 61. Piston; 7. First sealing structure; 8. Second sealing structure; 81. Sealing ring; 9. Positioner.

[0031] 1'. Rebound valve; 11'. Hole; 2'. Compression valve; 21'. Hole; 3'. Piston rod; 4'. Cylinder body; 5'. Rebound cylinder; 6'. Compression cylinder. Specific implementation mode

[0032] In order to enable those skilled in the art of this technology to better understand the technical solutions in this utility model, the following will clearly and completely describe the technical solutions in the embodiments of this utility model with reference to the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this utility model.

[0033] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] As Figures 2 to 5 shown, this utility model provides a valve guiding system, including an outer cylinder 1 and an inner cylinder 2, wherein: a compression flow port 11 and a rebound flow port 12 are provided on the outer cylinder 1 at the same cross-sectional area of the outer cylinder 1; the inner cylinder 2 is inserted into the outer cylinder 1, a compression diversion port 21 is provided on the inner cylinder 2, and a rebound flow channel 22 is formed between the inner cylinder 2 and the outer cylinder 1; wherein, a compression chamber 51 and a rebound chamber 52 are formed between the outer cylinder 1 and the inner cylinder 2, the compression diversion port 21 is connected to the compression flow port 11 through the compression chamber 51, and the rebound flow channel 22 is connected to the rebound flow port 12 through the rebound chamber 52.

[0036] The valve guiding system of the present utility model. The compression fluid port 11 is used to connect the compression valve 3, and the rebound fluid port 12 is used to connect the rebound valve 4. Since the compression fluid port 11 and the rebound fluid port 12 are arranged in the same cross-sectional area of the outer cylinder 1, the arrangement of the rebound valve 4 and the compression valve 3 in the non-axis direction outside the valve guiding system is realized. Without affecting the damping stroke, the problem of the diversion of the compression stroke and the rebound stroke in the same cross-sectional area within the valve guiding system is solved. The valve guiding system has a simple structure and a reasonable space design, providing a guarantee for its application in the vehicle suspension system.

[0037] Specifically, the outer cylinder 1 has an inner cavity. The compression fluid port 11 and the rebound fluid port 12 are respectively communicated with the inner cavity, and both are opened in the same cross-sectional area of the outer cylinder 1. In this embodiment, the compression fluid port 11 and the rebound fluid port 12 are oppositely arranged along the diameter direction of the outer cylinder 1. Of course, in other embodiments, the compression fluid port 11 and the rebound fluid port 12 can also be opened at any position of the outer cylinder 1, as long as they are arranged in the same cross-sectional area of the outer cylinder 1, and no limitation is made here.

[0038] The inner cylinder 2 is located in the inner cavity of the outer cylinder 1. An annular space 13 is formed between the inner cylinder 2 and the outer cylinder 1. Among them, the compression chamber 51 and the rebound chamber 52 are located in this annular space 13. In the present utility model, the inner cylinder 2 is used for the reciprocating movement of the piston rod 6. The piston 61 on the piston rod 6 reciprocates in the inner cylinder 2 to form the compression stroke and the rebound stroke.

[0039] In this embodiment, along the compression stroke direction F1 of the piston rod 6, the rebound chamber 52 and the compression chamber 51 are arranged in sequence. They do not occupy the extra space of the outer cylinder 1 and / or the inner cylinder 2, enabling the valve guiding system to maintain its original external dimensions. While making full use of the limited space of the annular space 13, the flexible arrangement of the rebound valve 4 and the compression valve 3 outside the valve guiding system is realized.

[0040] The inner cylinder 2 is provided with a compression diversion port 21. In this embodiment, the compression diversion port 21 is arranged near the end of the compression stroke of the piston 61, and there are four compression diversion ports 21. The four compression diversion ports 21 are equally spaced along the circumferential direction of the inner cylinder 2. Of course, in other embodiments, the compression diversion port 21 can also be set to three, five or more. Those skilled in the art can select the number of compression diversion ports 21 according to actual needs, and no limitation is made here.

[0041] When the piston rod 6 moves in the inner cylinder 2 during the compression stroke, the piston 61 of the piston rod 6 compresses the fluid medium in the inner cylinder 2, forcing the fluid medium to flow into the compression valve 3 through a plurality of compression diversion ports 21, a compression chamber 51, and a compression flow port 11, and finally flowing out of the valve guiding system; when the piston rod 6 of the piston rod 6 moves in the inner cylinder 2 during the rebound stroke, the piston 61 sucks the fluid medium in the inner cylinder 2, forcing the fluid medium to flow into the rebound valve 4 through a rebound flow channel 22, a rebound chamber 52, and a rebound flow port 12, and finally flowing back reversely into the valve guiding system.

[0042] In the valve guiding system of the present utility model, a compression chamber 51 and a rebound chamber 52 are arranged in the annular space 13 between the inner cylinder 2 and the outer cylinder 1, making full use of the annular space 13. At the same time, the compression valve 3 and the rebound valve 4 installed outside the valve guiding system can be arranged in a non-overlapping manner, providing the possibility for use in the suspension system of a vehicle.

[0043] According to an embodiment of the present utility model, as Figure 2 and Figure 3 shown, a compression guiding channel 511 is formed between the compression chamber 51 and the compression flow port 11, and the compression guiding channel 511 is inclined outward in the reverse direction of the compression stroke direction F1 of the piston rod 6.

[0044] By adopting the inclined compression guiding channel 511, and its inclination direction is set to be inclined radially outward from the end of the compression stroke of the inner cylinder 2 towards the direction away from the end, so that the fluid medium in the compression chamber 51 can be smoothly introduced into the compression flow port 11, and then flow into the compression valve 3, improving the flow velocity of the fluid medium.

[0045] Furthermore, a rebound guiding channel 521 is formed between the rebound chamber 52 and the rebound flow port 12, and the rebound guiding channel 521 is inclined outward along the compression stroke direction F1 of the piston rod 6.

[0046] By adopting the inclined rebound guiding channel 521, and its inclination direction is inclined radially outward towards the end of the compression stroke of the inner cylinder 2, so that the fluid medium in the rebound chamber 52 can be smoothly introduced into the rebound flow port 12, and then flow into the rebound valve 4, improving the flow velocity of the fluid medium.

[0047] According to an embodiment of the present utility model, the valve guiding system further includes a separation cylinder 5, the separation cylinder 5 is disposed between the outer cylinder 1 and the inner cylinder 2, a compression chamber 51 and a rebound chamber 52 are formed between the separation cylinder 5 and the inner cylinder 2, and a first sealing structure 7 is provided between the inner cylinder 2 and the separation cylinder 5 between the compression chamber 51 and the rebound chamber 52.

[0048] In the present utility model, a separation cylinder 5 is arranged in the annular space 13 between the outer cylinder 1 and the inner cylinder 2, and the separation cylinder 5 is in sealing cooperation with the outer wall of the inner cylinder 2 to form the above-mentioned compression chamber 51 and rebound chamber 52. Thus, the separation of the compression flow channel and the rebound flow channel is achieved through a single separation cylinder 5, simplifying the internal structure of the valve guiding system while enabling the non-overlapping arrangement of the compression valve 3 and the rebound valve 4.

[0049] Specifically, with reference to Figure 5 As shown, the separation cylinder 5 is generally in the shape of an annular cylinder, and a compression guiding channel 511 and a rebound guiding channel 521 are formed on the cylinder wall of the separation cylinder 5.

[0050] In this embodiment, the positions where the compression chamber 51 communicates with the compression flow port 11 and the positions where the rebound chamber 52 communicates with the rebound flow port 12 are arranged opposite to each other along the diameter direction of the outer cylinder 1. That is, the compression guiding channel 511 and the rebound guiding channel 521 are arranged opposite to each other along the diameter direction of the separation cylinder 5, thereby achieving the purpose of fluid communication between the compression flow port 11 and the rebound flow port 12 that are arranged opposite to each other along the diameter direction of the outer cylinder 1.

[0051] In the present utility model, the first sealing structure 7 is an O-ring, which is sealingly arranged between the inner cylinder 2 and the separation cylinder 5 between the compression chamber 51 and the rebound chamber 52, making the compression chamber 51 and the rebound chamber 52 independent of each other.

[0052] According to an embodiment of the present utility model, a second sealing structure 8 is arranged between the inner cylinder 2 and the separation cylinder 5 at the end of the compression stroke of the piston rod 6; in the present utility model, the second sealing structure 8 is at least two O-rings 81 arranged in an overlapping manner, improving the sealing performance between the separation cylinder 5 and the inner cylinder 2 at the end position of the compression stroke of the piston 61.

[0053] According to an embodiment of the present utility model, when the fluid medium in the compression inner cylinder 2 is compressed, the pressure on the piston rod 6 is relatively large. Therefore, the area of the piston rod 6 in contact with the fluid medium during the compression stroke is larger than the area of the piston rod 6 in contact with the fluid medium during the rebound stroke. That is, the area of the piston 61 in contact with the fluid medium during the compression stroke is larger than the area of the piston 61 in contact with the fluid medium during the rebound stroke.

[0054] According to an embodiment of the present utility model, positioners 9 are sealingly arranged between the separation cylinder 5 and the compression flow port 11 and the rebound flow port 12 respectively, and the positioners 9 can extend into the compression flow port 11 and the rebound flow port 12 respectively. The use of the positioners 9 fixes the position of the separation cylinder 5 in the annular space 13.

[0055] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A valve guiding system, characterized in that, Comprising: An outer cylinder, on which there are provided a compression flow port and a rebound flow port located in the same cross-sectional area of the outer cylinder; An inner cylinder, inserted into the outer cylinder, on which there is provided a compression diversion port, and a rebound flow channel is formed between the inner cylinder and the outer cylinder; Wherein, a compression chamber and a rebound chamber are formed between the outer cylinder and the inner cylinder, the compression diversion port is communicated with the compression flow port through the compression chamber, and the rebound flow channel is communicated with the rebound flow port through the rebound chamber.

2. The valve guiding system according to claim 1, characterized in that, A piston rod is inserted into the inner cylinder, and along the compression stroke direction of the piston rod, the rebound chamber and the compression chamber are arranged in sequence.

3. The valve guiding system according to claim 2, characterized in that, A compression guiding channel is formed between the compression chamber and the compression flow port, and the compression guiding channel is arranged obliquely outward in the reverse direction of the compression stroke direction of the piston rod.

4. The valve guiding system according to claim 2, characterized in that, A rebound guiding channel is formed between the rebound chamber and the rebound flow port, and the rebound guiding channel is arranged obliquely outward along the compression stroke direction of the piston rod.

5. The valve guiding system according to any one of claims 2 to 4, characterized in that, The valve guiding system further includes a separation cylinder, the separation cylinder is inserted between the outer cylinder and the inner cylinder, the compression chamber and the rebound chamber are formed between the separation cylinder and the inner cylinder, and a first sealing structure is arranged between the inner cylinder and the separation cylinder between the compression chamber and the rebound chamber.

6. The valve guiding system according to claim 5, wherein A second sealing structure is arranged between the inner cylinder and the separation cylinder at the end of the compression stroke of the piston rod.

7. The valve guiding system according to claim 6, characterized in that, The first sealing structure is an O-ring, and the second sealing structure is at least two O-rings arranged in an overlapping manner.

8. The valve guiding system according to claim 1, characterized in that, The position where the compression chamber is communicated with the compression flow port and the position where the rebound chamber is communicated with the rebound flow port are arranged oppositely along the diameter direction of the outer cylinder.

9. The valve guiding system according to claim 2, characterized in that, The area of the piston rod in contact with the fluid medium during the compression stroke is larger than the area of the piston rod in contact with the fluid medium during the rebound stroke.

10. The valve guiding system according to claim 5, characterized in that, Positioners are respectively and hermetically arranged between the separation cylinder and the compression flow port and the rebound flow port, and the positioners can respectively extend into the compression flow port and the rebound flow port.

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