High-buffering shock absorber

Abstract

The utility model provides a high-buffering shock absorber, and belongs to the technical field of shock absorbers. The high-buffering shock absorber comprises a base, a front fork pipe and a rear sleeve, a cylindrical groove with an upward opening is formed in the center of the base, the front fork pipe is installed in the cylindrical groove from top to bottom in an inserted mode, a plug for sealing and blocking the front fork pipe is installed at the bottom end of the front fork pipe, a hydraulic pipe is arranged on the outer side of the thin end of the plug in a sleeved mode, and a compression system is arranged on the top of the plug. The compression system comprises a piston ring, a compression spring, a saddle-shaped spring washer and a piston locking screw; the rear sleeve sleeves the upper end of the front fork pipe, a piston rod is arranged in the center of the rear sleeve, the main spring is coaxially arranged in the rear sleeve around the piston rod, a choke plug for plugging the rear sleeve is arranged at the top end of the rear sleeve, and an adjusting head is mounted at the top of the choke plug. The utility model has the advantages of higher bearing strength during movement, more comfort and stability, and better shock absorption performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorbers, and particularly relates to a high-buffering shock absorber. Background Art

[0002] Shock absorbers are widely used in vehicles to dampen the vibrations of the springs after absorbing shock, as well as impacts from the road. They accelerate the attenuation of frame and body vibrations, improving the vehicle's ride comfort. A pair of shock absorbers is typically installed between the frame and wheel carrier of a motorcycle.

[0003] In the existing technology, the bottom of the shock absorber is usually fixed by directly inserting the front fork tube into the base. The hydraulic oil in the hydraulic pipe directly forms a hydraulic impact on the bottom, and there is a lack of a compression buffer structure. Therefore, the comfort and stability of the shock absorber are poor during actual use; during the up and down movement of the shock absorber, the shock absorber limit will cause the inner and outer tube ports to be easily compressed and bent, thereby affecting the normal operation of the shock absorber. Utility Model Content

[0004] The purpose of the utility model is to provide a high-buffer shock absorber to address the above-mentioned problems in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A high-cushioning shock absorber comprises a base, a front fork tube and a rear sleeve;

[0006] The center of the base is provided with a cylindrical groove opening upward, a heightening gasket is installed at the bottom of the cylindrical groove, the front fork tube is inserted into the cylindrical groove from top to bottom, and a plug is installed at the bottom end to seal it. The overall structure of the plug is thin at the top and thick at the bottom. The bottom of the plug is located above the heightening gasket and is relatively fixed to the heightening gasket by screws. A hydraulic pipe coaxially installed with the front fork tube is sleeved on the outer side of the thin end of the plug, and a compression valve system is provided on the top of the plug.

[0007] The compression valve system includes a piston ring, a compression spring, a saddle spring washer and a piston locking screw. The piston locking screw passes through the center of the saddle spring washer, the compression spring and the piston ring from top to bottom, and its bottom end extends into the top of the plug and is fixedly connected thereto. A valve plate assembly is installed between the bottom of the piston ring and the plug.

[0008] The rear sleeve is sleeved on the upper end of the front fork tube, a piston rod is provided at the center of the rear sleeve, and a main spring is coaxially arranged inside the rear sleeve around the piston rod. A bulkhead is provided at the top of the rear sleeve to seal it. The overall structure of the bulkhead is thick at the top and thin at the bottom. The top of the piston rod extends into the bottom of the thin end of the bulkhead and is fixedly connected to it. A pointed set screw is installed from the side of the thin end of the bulkhead to the center to fix and limit the top of the piston rod.

[0009] An adjustment groove is provided at the top of the thick end of the blind head, in which an adjustment head is installed. The adjustment head and the top of the blind head are sealed by a pressure cover. An annular protrusion is formed under the pressure cover on the adjustment head, and a accommodating hole facing the center is provided on the outer side of the annular protrusion. A direction adjustment spring and a steel ball are installed in the hole from the inside to the outside.

[0010] In the above-mentioned high-buffering shock absorber, a screw hole connected to the cylindrical groove is opened at the bottom of the base. The overall structure of the screw hole is thin at the top and thick at the bottom. A hexagon socket screw is installed in the hole. The hexagon socket screw passes through the screw hole and the height-increasing gasket from bottom to top in sequence, and extends into the bottom of the plug and is fixedly connected to it. A copper pad is installed between the head of the hexagon socket screw and the top surface of the thick end of the screw hole.

[0011] In the above-mentioned high-buffer shock absorber, an O-ring is installed between the end of the plug close to the height-increasing gasket and the inner wall of the front fork tube; and an O-ring is installed between the piston ring and the inner wall of the hydraulic tube.

[0012] In the above-mentioned high-buffer shock absorber, a decorative indicator sleeve is provided above the cylindrical groove of the base and on the outer side of the front fork tube.

[0013] In the above-mentioned high-buffer shock absorber, a spring seat is arranged between the top of the main spring and the blind head, and a spring lining is provided inside the main spring below the spring seat on the outside of the piston rod, and a first buffer rubber pad is provided on the bottom of the spring lining on the piston rod.

[0014] In the above-mentioned high-buffer shock absorber, a second buffer rubber pad is sleeved on the outer side wall of the bottom of the thin end of the bulkhead, a limiting gasket is arranged between the second buffer rubber pad and the pointed set screw, and an O-ring is installed between the outer side wall of the thick end of the bulkhead and the inner side wall of the top of the rear sleeve.

[0015] In the above-mentioned high-buffer shock absorber, a preload adjustment nut is sleeved under the annular protrusion of the adjusting head, and a number of cylindrical pins are vertically arranged on the outer circumference of the adjusting head between the preload adjustment nut and the bottom of the adjusting groove. O-rings are arranged between the outer wall of the top of the adjusting head and the inner wall of the pressure cover, and between the outer wall of the pressure cover and the top side wall of the adjusting groove.

[0016] Compared with the existing technology, the high-buffer shock absorber provided by the utility model sets a compression valve system at the bottom of the front fork tube and a buffering and adjustment structure at the top of the rear sleeve, so that the shock absorber can withstand higher strength when moving up and down, is more comfortable and stable during operation, and has better shock absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the high-buffer shock absorber;

[0018] Figure 2This is a structural cross-sectional view of the high-cushion shock absorber;

[0019] In the above figure, 100, base; 110, cylindrical groove; 111, height-increasing washer; 120, screw hole; 121, hexagon socket screw; 122, copper washer; 200, front fork tube; 210, hydraulic tube; 220, plug; 221, valve plate assembly; 230, compression valve system; 231, piston ring; 232, compression spring; 233, saddle spring washer; 234, piston locking screw; 240, decorative indicator sleeve;

[0020] 300, rear sleeve; 310, piston rod; 320, main spring; 321, spring seat; 322, spring lining; 323, first buffer rubber pad; 330, blind head; 331, second buffer rubber pad; 332, limit washer; 333, pointed set screw; 334, adjustment slot; 340, adjustment head; 341, preload adjustment nut; 342, cylindrical pin; 343, direction adjustment spring; 344, steel ball; 345, pressure cover. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figures 1 to 2 As shown, the high-buffer shock absorber includes a base 100, a front fork tube 200 and a rear sleeve 300. A cylindrical groove 110 with an opening facing upward is provided in the center of the base 100. The front fork tube 200 is inserted into the cylindrical groove 110 from top to bottom. The rear sleeve 300 is sleeved on the upper end of the front fork tube 200 and can move up and down along it.

[0023] like Figure 2 As shown, a heightening gasket 111 is installed at the bottom of the cylindrical groove 110 of the base 100, and the front fork tube 200 is inserted close to the inner wall of the cylindrical groove 110 until the upper surface of the heightening gasket 111. The height of the front fork tube 200 is raised by the heightening gasket 111, so that the buffer distance of the rear sleeve 300 after moving toward the base 100 and reaching the lowest point is longer, thereby avoiding friction and collision with the base 100 when it is too close.

[0024] The front fork tube 200 is provided with a plug 220 at the bottom port to seal itself. The overall structure of the plug 220 is thin at the top and thick at the bottom, and the bottom surface of the thick end is in contact with the raised gasket 111. An O-ring is installed between the outer wall and the inner wall of the front fork tube 200 to enhance the sealing. The thin end is located inside the front fork tube 200, and a hydraulic tube 210 is provided on the outside that is coaxially installed with the front fork tube 200. The bottom end of the hydraulic tube 210 rests on the step between the thick and thin ends of the plug 220.

[0025] The base 100 has a screw hole 120 extending from bottom to top, connected to the cylindrical slot 110. Screw hole 120 is tapered at the top and wide at the bottom, housing a hexagon socket screw 121. The screw 121 passes through the screw hole 120 and the height-increasing washer 111, extending from bottom to top, before finally entering the bottom of the plug 220 and securing it there. This hexagon socket screw 121 securely connects the base 100, height-increasing washer 111, and front fork tube 200. A copper washer 122 is installed between the head of the hexagon socket screw 121 and the top surface of the thick end of the screw hole 120. This provides a better seal, ensuring a tight connection between the hexagon socket screw 121 and the base 100.

[0026] A compression valve system 230 is located at the top of plug 220. This system includes a piston ring 231, a compression spring 232, a saddle-shaped spring washer 233, and a piston locking screw 234. Piston ring 231 primarily performs sealing, oil control, heat conduction, and guidance functions. An O-ring is installed between piston ring 231 and the inner wall of hydraulic pipe 210 to further enhance sealing. Compression spring 232 is a pagoda-shaped spring that is larger at the top and smaller at the bottom. It is a special shock-absorbing spring characterized by its small size, high load capacity, and variable stiffness. It is the primary component of compression valve system 230, providing shock absorption and buffering. Saddle-shaped spring washer 233 provides upper and lower bearing surfaces for compression spring 232 and piston locking screw 234, effectively preventing loosening. Piston locking screw 234 passes through the centers of saddle-shaped spring washer 233, compression spring 232, and piston ring 231, sequentially from top to bottom, with its bottom end extending into the top of plug 220 and securely connected thereto.

[0027] The provision of the compression valve system 230 prevents the hydraulic oil in the hydraulic pipe 210 from directly impacting the plug 220 during shock absorber operation, thereby preventing loosening and oil leakage. Furthermore, since the hydraulic oil will instantly form a very high peak pressure due to inertia during impact, causing component vibration and noise, the compression valve system 230 can effectively reduce shock during hydraulic impact, thereby improving operational comfort and stability.

[0028] Further, a valve plate assembly 221 is installed between the bottom of the piston ring 231 and the plug 220. This valve plate assembly 221 primarily controls the flow of the medium, reducing its pressure and preventing backflow. A decorative indicator sleeve 240 is mounted above the cylindrical groove 110 of the base 100 and on the outside of the front fork tube 200. This not only provides a decorative aesthetic but also serves as an indicator ring for the bottom travel of the rear sleeve 300 during its vertical movement, facilitating the determination of changes in internal hydraulic pressure.

[0029] A piston rod 310 is positioned at the center of the rear sleeve 300. A main spring 320 is coaxially positioned within the rear sleeve 300 around the piston rod 310. A bulkhead 330 is provided at the top of the rear sleeve 300 to seal it. A spring seat 321 is positioned between the top of the main spring 320 and the bottom of the bulkhead 330. The spring seat 321 is a saddle-shaped structure, with its upper end resting against the bottom of the bulkhead 330 and its lower end positioned within the main spring 320. A spring liner 322 is positioned within the main spring 320 below the spring seat 321, surrounding the outer side of the piston rod 310. This liner 322 reduces friction and wear on the piston rod 310, providing support and absorbing vibration. A first rubber cushion 323 is positioned at the bottom of the spring liner 322, surrounding the piston rod 310, to further enhance shock absorption and cushioning.

[0030] The bulkhead 330 is thicker at the top and narrower at the bottom. It protrudes upward and outward from the top surface of the rear sleeve 300 to form a cap-like seal. The top of the piston rod 310 extends into the bottom of the thin end of the bulkhead 330 and is fixed to it. A pointed set screw 333 is installed on the side of the thin end of the bulkhead 330, extending from the side toward the center to fix it to the top of the piston rod 310, allowing the rear sleeve 300 and the piston rod 310 to move up and down together. A second cushioning pad 331 is mounted on the outer wall of the bottom of the thin end of the bulkhead 330 to further provide shock absorption and cushioning. A limiting washer 332 is provided between the second cushioning pad 331 and the pointed set screw 333 to limit and secure the pointed set screw 333.

[0031] An O-ring is installed between the outer wall of the butt end of the bulkhead 330 and the inner wall of the top of the rear sleeve 300 to strengthen the tightness of the connection between the bulkhead 330 and the rear sleeve 300. An adjustment slot 334 is provided at the top, in which the adjustment head 340 is mounted. The adjustment head 340 is sealed between the top of the bulkhead 330 by a gland 345. O-rings are also installed between the outer wall of the top of the adjustment head 340 and the inner wall of the gland 345, and between the outer wall of the gland 345 and the top sidewall of the adjustment slot 334 to prevent loosening and ensure a tight seal.

[0032] The adjusting head 340 has an annular protrusion formed below the pressure cap 345. The outer side of the annular protrusion has a center-facing receiving hole. A directional adjustment spring 343 and a steel ball 344 are installed in the hole from the inside out. Under the elastic force of the directional adjustment spring 343, the steel ball 344 rests against the inner wall of the adjusting slot 334. The inner wall of the adjusting slot 334 has corresponding grooves, facilitating the adjustment and rotation of the adjusting head 340 according to actual needs. A preload adjustment nut 341 is sleeved below the annular protrusion of the adjusting head 340 to preload the adjusting head 340. Several cylindrical pins 342 are vertically arranged around the outer circumference of the adjusting head 340, between the preload adjustment nut 341 and the bottom of the adjusting slot 334. These cylindrical pins 342 provide support and vibration transmission, thereby increasing the bearing strength.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0034] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A high-buffer shock absorber, comprising a base (100), a front fork tube (200) and a rear sleeve (300); characterized in that: The center of the base (100) is provided with a cylindrical groove (110) with an opening upward, and a heightening gasket (111) is installed at the bottom of the cylindrical groove (110). The front fork tube (200) is inserted and installed in the cylindrical groove (110) from top to bottom, and a plug (220) is installed at the bottom end to seal it. The overall structure of the plug (220) is thin at the top and thick at the bottom. The bottom of the plug (220) is located above the heightening gasket (111) and is relatively fixed to the heightening gasket (111) by screw connection. The outer side of the thin end of the plug (220) is sleeved with a hydraulic pipe (210) coaxially installed with the front fork tube (200), and the top of the plug (220) is provided with a compression valve system (230); The compression valve system (230) includes a piston ring (231), a compression spring (232), a saddle-shaped spring washer (233) and a piston locking screw (234). The piston locking screw (234) passes through the centers of the saddle-shaped spring washer (233), the compression spring (232) and the piston ring (231) from top to bottom, and its bottom end extends into the top of the plug (220) and is fixedly connected thereto. A valve plate group (221) is installed between the bottom of the piston ring (231) and the plug (220); The rear sleeve (300) is sleeved on the upper end of the front fork tube (200), a piston rod (310) is provided at the center of the rear sleeve (300), a main spring (320) is coaxially arranged around the piston rod (310) inside the rear sleeve (300), a top end of the rear sleeve (300) is provided with a bulkhead (330) for sealing the rear sleeve (300), the overall structure of the bulkhead (330) is thick at the top and thin at the bottom, the top of the piston rod (310) extends into the bottom of the thin end of the bulkhead (330) and is fixedly connected thereto, and a pointed set screw (333) is provided from the side of the thin end of the bulkhead (330) to the center to be fixed and limited with the top of the piston rod (310); The top of the thick end of the bulkhead (330) is provided with an adjustment groove (334), in which an adjustment head (340) is installed. The adjustment head (340) and the top of the bulkhead (330) are sealed by a pressure cover (345). The adjustment head (340) is formed with an annular protrusion below the pressure cover (345). The outer side surface of the annular protrusion is provided with a receiving hole facing the center, and a direction adjustment spring (343) and a steel ball (344) are installed in the hole from the inside to the outside.

2. A high-cushioning shock absorber according to claim 1, characterized in that: The bottom of the base (100) is provided with a screw hole (120) connected to the cylindrical groove (110). The overall structure of the screw hole (120) is thin at the top and thick at the bottom. A hexagon socket screw (121) is installed in the hole. The hexagon socket screw (121) passes through the screw hole (120) and the heightening gasket (111) from bottom to top, and extends into the bottom of the plug (220) and is fixedly connected thereto. A copper pad (122) is installed between the head of the hexagon socket screw (121) and the top surface of the thick end of the screw hole (120).

3. The high-cushion shock absorber according to claim 1, characterized in that: An O-ring is installed between the end of the plug (220) close to the heightening gasket (111) and the inner wall of the front fork tube (200); and an O-ring is installed between the piston ring (231) and the inner wall of the hydraulic tube (210).

4. The high-cushioning shock absorber according to claim 1, characterized in that: A decorative indicator sleeve (240) is sleeved on the outer side of the front fork tube (200) above the cylindrical groove (110) of the base (100).

5. The high-cushioning shock absorber according to claim 1, characterized in that: A spring seat (321) is provided between the top of the main spring (320) and the blind end (330); a spring liner (322) is provided inside the main spring (320) below the spring seat (321) and sleeved on the outside of the piston rod (310); and a first buffer rubber pad (323) is sleeved on the bottom of the spring liner (322) and sleeved on the piston rod (310).

6. The high-cushion shock absorber according to claim 1, characterized in that: A second buffer rubber pad (331) is sleeved on the outer side wall of the bottom of the thin end of the bulkhead (330), a limiting gasket (332) is provided between the second buffer rubber pad (331) and the pointed set screw (333), and an O-ring is installed between the outer side wall of the thick end of the bulkhead (330) and the inner side wall of the top of the rear sleeve (300).

7. The high-cushion shock absorber according to claim 1, characterized in that: A preload adjustment nut (341) is sleeved below the annular protrusion of the adjustment head (340), and a plurality of cylindrical pins (342) are vertically arranged on the outer circumference of the adjustment head (340) between the preload adjustment nut (341) and the bottom of the adjustment groove (334). O-rings are arranged between the outer side wall of the top of the adjustment head (340) and the inner side wall of the pressure cover (345), and between the outer side wall of the pressure cover (345) and the top side wall of the adjustment groove (334).

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