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CN-121993524-A - Adjustable double-cavity front fork shock absorber

CN121993524ACN 121993524 ACN121993524 ACN 121993524ACN-121993524-A

Abstract

The application provides an adjustable double-cavity front fork shock absorber, which relates to the technical field of shock absorbers and comprises a mounting frame, wherein an outer cylinder is fixed on the mounting frame, an inner tube is arranged in the outer cylinder in a sliding mode, a first spiral spring is arranged in the inner tube in a sliding mode, an adjusting bolt is connected to the outer cylinder through threads, one end below the adjusting bolt is not threaded, one end below the adjusting bolt is inserted into a pipe fitting, and an extrusion head is inserted into the pipe fitting. According to the application, the oil extrusion is utilized for pre-adjustment, when the adjusting bolt is rotated, the bolt can extrude the oil in the pipe fitting, the extrusion head is pushed to move downwards under the pressure action of the oil, and the first spiral spring is accurately extruded, so that the pre-adjustment of the first buffer assembly is completed. Compared with the traditional direct mechanical extrusion mode, the fluid characteristic of oil can effectively reduce the loosening probability of the adjusting bolt, meanwhile, the influence of pitch errors on adjustment precision is avoided, the adjustment precision of the first buffer assembly is greatly improved, and the damping buffer force can be flexibly set according to different riding scenes.

Inventors

  • FENG KECHENG
  • CHEN SHAOJUN
  • CHEN RUOXI
  • WANG JINFEN

Assignees

  • 金华凯凯壹科技有限公司

Dates

Publication Date
20260508
Application Date
20260403

Claims (8)

  1. 1. The adjustable double-cavity front fork shock absorber is characterized by comprising a mounting frame (1), wherein an outer cylinder (2) is fixed on the mounting frame (1), an inner tube (201) is arranged in the inner cylinder (2) in a sliding mode, a first spiral spring (301) is arranged in the inner tube (201) in a sliding mode, an adjusting bolt (304) is connected to the outer cylinder (2) in a threaded mode, one end below the adjusting bolt (304) is not threaded, one end below the adjusting bolt (304) is inserted into a pipe fitting (302), an extrusion head (303) is inserted into the pipe fitting (302), and one end below the extrusion head (303) is in contact with one end above the first spiral spring (301).
  2. 2. The adjustable double-cavity front fork damper according to claim 1, wherein oil is filled in the inner tube (201), the oil is in contact with the extrusion head (303) and the adjusting bolt (304), the adjusting bolt (304) is rotated when the first buffer assembly (3) is pre-adjusted, and the adjusting bolt (304) extrudes the oil in the pipe fitting (302).
  3. 3. The adjustable double-cavity front fork damper according to claim 2, wherein the adjusting position of the adjusting bolt (304) is of a hexagonal prism-shaped structure, the adjusting position of the adjusting bolt (304) is provided with an adjusting groove (305), and the adjusting groove (305) is of a hexagonal groove-shaped structure.
  4. 4. The adjustable double-cavity front fork damper according to claim 3, wherein the adjusting bolt (304) is sleeved with an elastic tube (306), the elastic tube (306) is made of rubber, one end above the elastic tube (306) is in elastic contact with an adjusting position of the adjusting bolt (304), one end below the elastic tube (306) is in elastic contact with the upper end face of the outer cylinder (2), and the elastic tube (306) is an anti-loosening auxiliary piece of the adjusting bolt (304).
  5. 5. The adjustable double-cavity front fork damper according to claim 4, wherein the outer cylinder (2) is symmetrically fixed with spring rods (307), the extending ends of the spring rods (307) are fixed on auxiliary seats (308), and the auxiliary seats (308) are in elastic contact with the adjusting bolts (304).
  6. 6. The adjustable double-cavity front fork damper according to claim 5, wherein the pipe fitting (302) is fixed with a base body (309), the pipe fitting (302) is sleeved with a second spiral spring (310), one end above the second spiral spring (310) is elastically contacted with the base body (309), one end below the second spiral spring (310) is elastically contacted with the extrusion head (303), and the second spiral spring (310) is a buffer piece of the extrusion head (303).
  7. 7. The adjustable double-cavity front fork shock absorber according to claim 6, wherein the mounting frame (1) is fixedly provided with a second buffer component (4), and the second buffer component (4) is a damping shock absorption cavity.
  8. 8. The adjustable double-cavity front fork damper according to claim 7, wherein an auxiliary groove (311) is formed in one end above the extrusion head (303), an auxiliary groove (311) is also formed in one end below the adjusting bolt (304), the auxiliary groove (311) is of a conical groove structure, and the first spiral spring (301), the pipe fitting (302), the extrusion head (303), the adjusting bolt (304), the adjusting groove (305), the elastic pipe (306), the spring rod (307), the auxiliary seat (308), the seat body (309), the second spiral spring (310) and the auxiliary groove (311) jointly form the first buffer assembly (3).

Description

Adjustable double-cavity front fork shock absorber Technical Field The invention relates to the technical field of shock absorbers, in particular to an adjustable double-cavity front fork shock absorber. Background The double-cavity front fork shock absorber is a high-performance suspension component arranged at the front end of a vehicle such as a motorcycle, a mountain bike, an all-terrain vehicle and the like, and has the core that oil-gas separation and accurate damping control are realized by two independent cavities (double cavities/double cylinders), and the double-cavity front fork shock absorber is different from a traditional single-cavity structure. The prior double-cavity front fork shock absorber has the following defects: the existing device can be adjusted, but the adjusting structure is easy to loose in the use process; the existing device can be adjusted, but is greatly influenced by the screw pitch, and the adjustment is not fine enough; The existing device cannot perform multiple anti-loosening on the adjusting piece, and the adjusting structure is poor in adaptability in adjustment and cannot be simultaneously suitable for various tools. Disclosure of Invention The application relates to an adjustable double-cavity front fork shock absorber which solves the problems that an existing device can be adjusted, but an adjusting structure of the adjustable double-cavity front fork shock absorber is easy to loosen in the using process, the existing device can be adjusted, but the existing device is too much influenced by screw pitch and is not fine enough in adjustment, the existing device can not perform multiple anti-loosening on an adjusting piece, and the adjusting structure is poor in adaptability in adjustment and can not be simultaneously suitable for various tools. The invention provides an adjustable double-cavity front fork shock absorber which specifically comprises a mounting frame, wherein an outer cylinder is fixed on the mounting frame, an inner tube is arranged in the outer cylinder in a sliding mode, a first spiral spring is arranged in the inner tube in a sliding mode, an adjusting bolt is connected to the outer cylinder in a threaded mode, one end below the adjusting bolt is not threaded, one end below the adjusting bolt is inserted into a pipe fitting, an extrusion head is inserted into the pipe fitting, and one end below the extrusion head is in contact with one end above the first spiral spring. Further, the inner pipe is internally filled with oil, the oil is in contact with the extrusion head and the adjusting bolt, and when the first buffer assembly is pre-adjusted, the adjusting bolt is rotated, and the adjusting bolt extrudes the oil in the pipe fitting. Further, the adjusting part of the adjusting bolt is of a hexagonal prism-shaped structure, and the adjusting part of the adjusting bolt is provided with an adjusting groove which is of a hexagonal groove-shaped structure. Further, the adjusting bolt is sleeved with an elastic tube, the elastic tube is made of rubber, one end above the elastic tube is in elastic contact with the adjusting position of the adjusting bolt, one end below the elastic tube is in elastic contact with the upper end face of the outer cylinder, and the elastic tube is an anti-loosening auxiliary piece of the adjusting bolt. Further, the outer cylinder is symmetrically fixed with spring rods, the extending ends of the spring rods are fixed on the auxiliary seat, and the auxiliary seat is in elastic contact with the adjusting bolt. Further, a base is fixed on the pipe fitting, a second spiral spring is sleeved on the pipe fitting, one end above the second spiral spring is in elastic contact with the base, one end below the second spiral spring is in elastic contact with the extrusion head, and the second spiral spring is a buffer piece of the extrusion head. Further, a second buffer assembly is fixed on the mounting frame and is a damping vibration absorption cavity. Further, the auxiliary groove has been seted up to extrusion head top one end, and the auxiliary groove has also been seted up to adjusting bolt below one end, and the auxiliary groove is the toper groove column structure, and first coil spring, pipe fitting, extrusion head, adjusting bolt, adjustment groove, elastic tube, spring bar, auxiliary seat, pedestal, second coil spring and auxiliary groove have constituteed first buffer unit jointly. The invention provides an adjustable double-cavity front fork shock absorber, which has the following beneficial effects: According to the application, when the adjusting bolt is rotated, the oil in the pipe fitting can be extruded by the bolt, the extrusion head is pushed to move downwards under the pressure action of the oil, and the first spiral spring is precisely extruded, so that the pre-adjustment of the first buffer component is completed. According to the application, the adjusting part of the adjusting bolt adopts a hexagonal prism-sh