Gradient adjusting valve element

Abstract

The utility model discloses a gradually-changing adjusting valve element which comprises a valve element body and a knob, one end of the valve element body is provided with a fixing portion used for being fixedly connected with the knob, the other end of the valve element body is provided with an adjusting portion which abuts against the end of an ejector pin in a matched mode, and a rotating shaft is fixed to the end, relatively away from the fixing portion, of the adjusting portion in a penetrating mode. The rotating shaft and the valve element body are coaxially arranged, the peripheral face of the adjusting part is composed of a plurality of continuous contour faces, the contour faces spirally surround the rotating shaft in the clockwise or anticlockwise direction, and the height difference between the contour faces and the surface of the rotating shaft is linearly increased in the same spiral direction. The shock absorber is easy to install and operate, the ejector pin is not prone to driving the valve element to rotate to cause damping force change when the ejector pin is subjected to impact force when the shock absorber moves at a high speed, the stability after damping adjustment is kept good, and the comfort and the stability of the shock absorber are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of regulating valve cores, specifically relating to a gradual regulating valve core. Background Technology

[0002] Existing methods for adjusting damping in shock absorbers typically involve controlling the rotation of a valve core via a knob at the end of the shock absorber, which in turn controls the up-and-down movement of a pin to adjust the damping clearance. The rotation of the knob translates into the degree to which the pin obstructs the damping orifice: the more the pin extends into the damping orifice, the smaller the diameter, the greater the resistance to oil flow, and the higher the restoring damping value (the stiffer the shock absorber). Conversely, the smaller the diameter, the lower the damping value (the softer the shock absorber). The valve core typically controls the up-and-down movement of the pin through methods such as screw and nut transmission or gear and rack transmission. However, the valve core has a complex structure, is difficult to install and operate, and its damping adjustment stability is easily affected during high-speed movement of the shock absorber. Utility Model Content

[0003] The purpose of this invention is to provide a gradual regulating valve core to address the aforementioned problems.

[0004] This utility model is achieved through the following technical solution: a gradual adjustment valve core, including a valve core body and a knob. One end of the valve core body is provided with a fixing part for fixing and connecting the knob, and the other end is provided with an adjustment part that abuts against the end of a pin. A rotating shaft is fixed through the end of the adjustment part that is relatively far from the fixing part. The rotating shaft and the valve core body are coaxially arranged. The outer peripheral surface of the adjustment part is composed of several continuous contour surfaces. The several contour surfaces spiral around the rotating shaft in a clockwise or counterclockwise direction, and the height difference between the several contour surfaces and the surface of the rotating shaft increases linearly in the same spiral direction. Any one of the contour surfaces is perpendicular to the straight line containing the diameter of the rotating shaft.

[0005] Furthermore, the contour surfaces with the largest height difference and the contour surfaces with the smallest height difference are connected adjacently, and a limiting baffle is provided at the height difference between the two. The top of the limiting baffle hooks upwards towards the contour surface with the largest height difference to form a reverse limiting hook.

[0006] Furthermore, the number of contour surfaces is six, the included angle between the diameters of the corresponding vertical rotation axes of two adjacent contour surfaces is 60°, and the vertical height difference between adjacent contour surfaces is 0.4 units.

[0007] Furthermore, a sealing structure is provided between the fixing part and the adjusting part of the valve core body. The sealing structure includes two convex rings fixed on the valve core body, and a sealing ring is provided between the two convex rings. A limiting ring is provided between the convex ring near the knob end and the knob, and the radius of the limiting ring is larger than the radius of the sealing ring.

[0008] Furthermore, the fixing part is provided with a mounting groove, and a connecting rod is fixedly installed in the mounting groove. One end of the connecting rod extending out of the mounting groove is connected to a fixing knob.

[0009] During installation, the knob is fixedly mounted on the fixing part of the valve core body, and then the valve core body is installed into the mounting position at the end of the shock absorber. The rotating shaft of the valve core body is inserted into the mounting position to provide limiting support. The ejector pin abuts against one of the contour surfaces of the adjusting part. The installation operation is simple and convenient. In use, turning the knob drives the valve core body to rotate, and the adjusting part located at the other end of the valve core body rotates synchronously. Since the ejector pin elastically abuts against the contour surface in the vertical direction, when the adjusting part rotates, different contour surfaces rotate to face the ejector pin. The ejector pin adjusts its position in the vertical direction according to the height corresponding to the different contour surfaces, thereby changing the damping clearance of the shock absorber accordingly. The height difference between each contour surface and the surface of the rotating shaft increases linearly in the same helical direction. Therefore, the change in the damping gap corresponding to the contour surfaces that the valve core body successively abuts against when it rotates is also linear. Thus, when it is necessary to change the stiffness of the shock absorber, it can be accurately adjusted by turning the knob, which is convenient. In addition, by setting any one of the contour surfaces to be perpendicular to the straight line containing the diameter of the rotating shaft, the end of the pin is located on a straight line containing a certain diameter of the rotating shaft when it abuts against any contour surface. This maintains a relatively stable state and avoids the impact force on the pin during the high-speed movement of the shock absorber, which would cause the valve core to rotate and change the damping force. This maintains good stability after damping adjustment and improves the comfort and stability of the shock absorber. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the valve core body in this utility model;

[0011] Figure 2 yes Figure 1 Cross-sectional view of the adjustment section at point AA;

[0012] Figure 3 It is a linear growth graph of the height difference of the spiral rise angle at different angles of several contour surfaces;

[0013] Figure 4 This is a schematic diagram of the assembly and use of this utility model.

[0014] The attached figures are labeled as follows:

[0015] 1. Valve core body; 11. Fixing part; 111. Mounting groove; 112. Connecting rod; 12. Adjusting part; 121. Contour surface; 13. Rotating shaft; 14. Limiting baffle; 141. Reverse limiting hook; 2. Knob; 31. Raised ring; 32. Sealing ring; 33. Limiting ring. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific examples and accompanying drawings.

[0017] like Figures 1-4 As shown, this utility model describes a gradual adjustment valve core, including a valve core body 1 and a knob 2. One end of the valve core body 1 is provided with a fixing part 11 for fixing and connecting the knob 2, and the other end is provided with an adjustment part 12 that abuts against the end of a pin. A rotating shaft 13 is fixedly inserted through the end of the adjustment part 12 that is relatively far from the fixing part 11. The rotating shaft 13 and the valve core body 1 are coaxially arranged. The outer peripheral surface of the adjustment part 12 is composed of several continuous contour surfaces 121. The several contour surfaces 121 are spirally wrapped around the rotating shaft 13 in a clockwise or counterclockwise direction, and the height difference between the several contour surfaces 121 and the surface of the rotating shaft 13 increases linearly in the same spiral direction. Any contour surface 121 is perpendicular to the straight line containing the diameter of the rotating shaft 13.

[0018] During installation, fix knob 2 onto the fixing part 11 of valve core body 1, and then install valve core body 1 into the mounting position at the end of the shock absorber. Please refer to the following for the assembly and usage configuration. Figure 4 The rotating shaft 13 of the valve core body 1 can be inserted into the installation position to play a limiting and supporting role. The ejector pin can be abutted on one of the contour surfaces 121 of the adjustment part 12. The installation and operation are simple and convenient.

[0019] In use, turning knob 2 rotates the valve core body 1, causing the adjusting part 12 at the other end of the valve core body 1 to rotate synchronously. Since the ejector pin elastically abuts against the contour surface 121 in the vertical direction, when the adjusting part 12 rotates, different contour surfaces 121 rotate to face the ejector pin. The ejector pin adjusts its position in the vertical direction according to the height corresponding to the different contour surfaces 121, thereby changing the damping clearance of the shock absorber accordingly. Since the height difference between several contour surfaces 121 and the surface of the rotating shaft 13 increases linearly in the same helical direction, the wheels that abut against the ejector pin in sequence when the valve core body 1 rotates... The change in the size of the damping gap corresponding to the profile surface 121 is also linear. Therefore, when it is necessary to change the stiffness of the shock absorber, it can be accurately adjusted by rotating the knob 2, which is convenient. In addition, by setting any one of the profile surfaces 121 to be perpendicular to the straight line containing the diameter of the rotation shaft 13, the end of the ejector pin is located on a straight line containing a certain diameter of the rotation shaft 13 when it abuts against any profile surface 121, so as to maintain a relatively stable state and avoid the impact force on the ejector pin during the high-speed movement of the shock absorber from causing the valve core to rotate and thus changing the damping force. This maintains good stability after damping adjustment and improves the comfort and stability of the shock absorber.

[0020] In this embodiment of the invention, the contour surface 121 with the maximum height difference and the contour surface 121 with the minimum height difference are connected adjacently. A limiting baffle 14 is provided at the height difference between the two. The top of the limiting baffle 14 hooks up towards the contour surface 121 with the maximum height difference to form a reverse limiting hook 141. The intersection of the two extreme height difference positions is equivalent to the replacement point of the maximum and minimum damping positions. By setting the limiting baffle 14 and the reverse limiting hook 141 at this position, the reverse limiting hook 141 can restrict the pin from moving from the contour surface 121 with the maximum height difference to the contour surface 121 with the minimum height difference, so that the two extreme contour surfaces 121 are completely separated. Thus, the unidirectional rotation of the knob 2 is limited to increasing or decreasing the damping position, which is convenient for adjustment.

[0021] The number of contour surfaces 121 in this invention determines the adjustment sensitivity of the damping level. The more contour surfaces 121 there are, the higher the adjustment sensitivity of the damping level; conversely, the fewer contour surfaces 121 there are, the lower the adjustment sensitivity of the damping level. Figure 2 and Figure 3 As shown, in this embodiment of the present invention, the number of contour surfaces 121 is preferably six, the included angle between the diameters of the corresponding perpendicular rotation axes 13 of two adjacent contour surfaces 121 is 60°, and the vertical height difference between adjacent contour surfaces 121 is 0.4 units. Figure 2As shown in the figure, the dashed lines represent the straight lines containing the diameters of the rotation axes 13 that are perpendicular to each contour surface 121, and point af is the foot of the perpendicular between the straight lines and each contour surface 121. Figure 3 The height difference between points on the contour surface 121 and the surface of the rotating shaft 13 changes as the helical angle extends. At adjacent af points, the height difference changes by 0.4 units. This embodiment can achieve six-stage gradual adjustment of the damper's damping. The damping level has moderate sensitivity. When rotating the knob 2 to switch damping levels, only a 60° rotation is needed for stable positioning. Applying force is convenient and does not require precise fine-tuning. Even if the ejector pin is not initially aligned with the vertical direction of the diameter of the rotating shaft 13, during the vibration test, the ejector pin will automatically adjust to the vertical diameter position corresponding to the current contact contour surface 121, so that the damping value automatically tends to the set value of the specific level. It has a high fault tolerance rate and the adjustment process is simple and convenient.

[0022] In this embodiment of the present invention, a sealing structure is provided between the fixing part 11 and the adjusting part 12 of the valve core body 1. The sealing structure includes two convex rings 31 that are fixed around the valve core body 1. A sealing ring 32 is provided between the two convex rings 31. A limiting ring 33 is provided between the convex ring 31 near the knob 2 and the knob 2 and is engaged with the installation position. The radius of the limiting ring 33 is larger than the radius of the sealing ring 32. By setting the sealing ring 32, the oil in the shock absorber is prevented from flowing out from the valve core installation position. By setting the two convex rings 31, the sealing ring 32 is fixed in position. When the limiting ring 33 is engaged with the installation position, the limiting ring 33 can prevent the convex ring 31 from moving outward and loosening, further strengthening the position fixation of the sealing ring 32, but without causing any shift in the rotation of the valve core body 1.

[0023] In this embodiment of the utility model, a mounting groove 111 is provided on the fixing part 11, and a connecting rod 112 is fixedly installed in the mounting groove 111. One end of the connecting rod 112 extending out of the mounting groove 111 is connected to the fixing knob 2. The connection method between the connecting rod 112 and the mounting groove 111 can be a threaded connection or an interference fit connection, so that the knob 2 and the valve core body 1 always remain fixedly connected during use.

[0024] The above embodiments are merely preferred embodiments of the present utility model and are only used to explain the present utility model, not to limit the present utility model. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A gradual regulating valve core, comprising a valve core body (1) and a knob (2), characterized in that: One end of the valve core body (1) is provided with a fixing part (11) for fixing the knob (2), and the other end is provided with an adjusting part (12) that abuts against the end of the ejector pin. A rotating shaft (13) is fixedly inserted through the end of the adjusting part (12) that is relatively far away from the fixing part (11). The rotating shaft (13) and the valve core body (1) are coaxially arranged. The outer peripheral surface of the adjusting part (12) is composed of several continuous contour surfaces (121). Several contour surfaces (121) spiral around the rotating shaft (13) in a clockwise or counterclockwise direction. The height difference between several contour surfaces (121) and the surface of the rotating shaft (13) increases linearly in the same spiral direction. Any contour surface (121) is perpendicular to the straight line containing the diameter of the rotating shaft (13).

2. The gradual regulating valve core according to claim 1, characterized in that: The contour surface (121) with the maximum height difference and the contour surface (121) with the minimum height difference are connected adjacently, and a limiting baffle (14) is provided at the height difference between the two. The top of the limiting baffle (14) hooks up towards the contour surface (121) with the maximum height difference to form a reverse limiting hook (141).

3. A gradual regulating valve core according to claim 1, characterized in that: The number of the contour surfaces (121) is six, the included angle between the diameters of the vertical rotation axes (13) of two adjacent contour surfaces (121) is 60°, and the vertical height difference between adjacent contour surfaces (121) is 0.4 units.

4. A gradual regulating valve core according to claim 1, characterized in that: A sealing structure is provided between the fixing part (11) and the adjusting part (12) of the valve core body (1). The sealing structure includes two convex rings (31) that are fixed on the valve core body (1). A sealing ring (32) is provided between the two convex rings (31). A limiting ring (33) is provided between the convex ring (31) near the knob (2) and the knob (2) and is locked in place at the installation position. The radius of the limiting ring (33) is greater than the radius of the sealing ring (32).

5. A gradual regulating valve core according to claim 1, characterized in that: The fixing part (11) is provided with an installation groove (111), and a connecting rod (112) is fixedly installed in the installation groove (111). One end of the connecting rod (112) extending out of the installation groove (111) is connected to the fixing knob (2).

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