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CN-224211198-U - Rear shock-absorbing folding frame with quadrangular pyramid structure

CN224211198UCN 224211198 UCN224211198 UCN 224211198UCN-224211198-U

Abstract

The utility model discloses a rear shock-absorbing folding frame with a quadrangular pyramid structure, which comprises a front frame, a middle pipe, a rear frame, a shock absorber and a shaft barrel, wherein the front frame is connected with the front side of the middle pipe, one end of the shock absorber is hinged with the rear side of the upper part of the middle pipe, the axis of the shaft barrel is perpendicular to the axis of the middle pipe and is welded and fixed at the rear side of the bottom end of the middle pipe, the upper side of the rear frame is connected with the other end of the shock absorber, the lower side of the rear frame is rotationally connected with the shaft barrel, the rear frame comprises a left side frame and a right side frame, the shock absorber comprises a shock absorption head, a shock absorption tail, an elastomer and a bolt shaft lever, the shock absorption head comprises a hollow pipe type barrel body and a hinge joint arranged at one end of the barrel body, the hinge joint is provided with a hinge through hole and a threaded hole, the axis of the hinge through hole is perpendicular to the axis of the barrel body, the axis of the threaded hole is coaxial with the axis of the barrel body, and the shock absorption tail comprises a telescopic pipe and a connecting pipe in a three-way tubular connection. The utility model can ensure the strength of the bicycle frame and can better exert the damping performance of the damper.

Inventors

  • QIU ZIMING
  • YE ZHENHUI

Assignees

  • 小果车业(杭州)有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (7)

  1. 1. The rear shock-absorbing folding frame with the quadrangular pyramid structure is characterized by comprising a front frame, a middle pipe, a rear frame, a shock absorber and a shaft barrel, wherein the front frame is connected with the front side of the middle pipe, one end of the shock absorber is hinged with the rear side of the upper part of the middle pipe, the axis of the shaft barrel is perpendicular to the axis of the middle pipe and is welded and fixed at the rear side of the bottom end of the middle pipe, the upper side of the rear frame is connected with the other end of the shock absorber, the lower side of the rear frame is rotationally connected with the shaft barrel, and the rear frame comprises a left side frame and a right side frame; The shock absorber include damping head, shock attenuation tail, elastomer, bolt axostylus axostyle, the damping head include hollow tube body, locate the articulated joint of body one end, the articulated joint be equipped with articulated through-hole, screw hole, articulated through-hole axis and body axis perpendicular, screw hole axis and body axis coaxial, the shock attenuation tail including flexible pipe, the connecting pipe that is tee bend tubular connection, flexible pipe one end be equipped with the closure plate and stretch into in the damping head body, the closure plate in the middle of be equipped with the screw rod through-hole, flexible pipe other end and connecting pipe middle part be connected and communicate, the connecting pipe on be equipped with the operation through-hole with the opposite side of connecting flexible pipe one side, connecting pipe and rear frame upside be connected, the bolt axostylus axostyle pass the operation through-hole and pass through screw hole threaded connection with the shock attenuation tail and be connected, the elastomer locate in the damping head body, the elastomer middle part hold the bolt axostylus axostyle and pass, elastomer both ends paste tight damping head articulated joint, shock attenuation tail flexible pipe closure plate respectively.
  2. 2. The rear shock-absorbing folding frame with the quadrangular pyramid structure as set forth in claim 1, wherein the left side frame and the right side frame are connected with each other through two fixing pieces at the top of one side of the right side frame close to the middle pipe, the connecting pipe of the shock-absorbing tail is arranged between the two fixing pieces and connected with the two fixing pieces, the bottom of one side of the left side frame and the right side frame close to the middle pipe is respectively provided with a shaft lug, and the shaft lugs are respectively connected with two ends of the shaft barrel.
  3. 3. The rear shock absorbing folding frame with the quadrangular pyramid structure as set forth in claim 1 or 2, wherein the left side frame comprises an upper left fork, a left inserting piece, a lower left fork and a left connecting rod, the right side frame comprises an upper right fork, a right inserting piece, a lower right fork and a right connecting rod, one ends of the upper left fork and the lower left fork are connected through the left inserting piece, the other ends of the upper left fork are connected with one end of the left connecting rod, the other ends of the lower left fork and the left connecting rod are respectively connected with one shaft lug, one ends of the upper right fork and the lower right fork are connected through the right inserting piece, the other ends of the upper right fork and the lower right connecting rod are respectively connected with the other shaft lug, and the upper left fork and the connecting end of the left connecting rod, the upper right fork and the connecting end of the right connecting rod are mutually connected through two fixing pieces.
  4. 4. The rear shock absorbing folding frame with the quadrangular pyramid structure as set forth in claim 1, wherein the rear side of the upper part of the middle pipe is hinged with the rear frame with a mounting seat, the mounting seat is provided with a U-shaped clamping groove, and the hinge joint is arranged in the U-shaped clamping groove and hinged with the mounting seat through a pin shaft.
  5. 5. The rear shock absorbing folding frame with the quadrangular pyramid structure as set forth in claim 1, wherein the rear frame is provided with a foot rest seat near the bottom of the middle pipe.
  6. 6. The rear shock absorbing folding frame with the quadrangular pyramid structure as set forth in claim 1, wherein the lower side of the rear frame is provided with two lugs, the lugs are respectively attached to two sides of the shaft barrel and are rotationally connected with the shaft barrel through a group of primary and secondary locking screws, the primary and secondary locking screws comprise a first connecting sleeve, a second connecting sleeve and a fixing bolt, the first connecting sleeve and the second connecting sleeve respectively extend into the sleeve from two sides of the sleeve, and the fixing bolt passes through the first connecting sleeve or the second connecting sleeve and is fixedly connected with the other connecting sleeve through threads.
  7. 7. The rear shock absorbing folding bicycle frame with the quadrangular pyramid structure as set forth in claim 1, wherein the elastic body is a compression spring or an elastic rubber cylinder.

Description

Rear shock-absorbing folding frame with quadrangular pyramid structure Technical Field The utility model relates to the technical field of bicycle frames, in particular to a rear shock-absorbing folding frame with a quadrangular pyramid structure. Background The top of the middle tube of the bicycle is connected with the saddle, the bottom of the middle tube is connected with the pedal shaft, the frame between the middle tube and the front wheel can be called as a front frame, and the frame between the middle tube and the rear wheel can be called as a rear frame. The bicycle frame shock attenuation mainly realizes through the bumper shock absorber, and the mounted position of bumper shock absorber is various, needs to carry out reasonable collocation setting to the structure of bicycle frame and the installation of bumper shock absorber, can guarantee the intensity of bicycle frame, also the shock attenuation performance of performance bumper shock absorber that also can be better. Disclosure of utility model The utility model aims to optimize the matching structure of a bicycle frame and a shock absorber in the prior art, and provides a rear shock-absorbing folding frame with a quadrangular pyramid structure, which can ensure the strength of the bicycle frame and better exert the shock absorption performance of the shock absorber. In order to achieve the aim, the utility model provides a rear shock absorption folding frame with a quadrangular pyramid structure, which comprises a front frame, a middle tube, a rear frame, a shock absorber and a shaft tube, wherein the front frame is connected with the front side of the middle tube, one end of the shock absorber is hinged with the rear side of the upper part of the middle tube, the axis of the shaft tube is perpendicular to the axis of the middle tube and is fixedly welded at the rear side of the bottom end of the middle tube, the upper side of the rear frame is connected with the other end of the shock absorber, the lower side of the rear frame is rotationally connected with the shaft tube, the rear frame comprises a left side frame and a right side frame, the shock absorber comprises a shock absorption head, a shock absorption tail, an elastic body and a bolt shaft rod, the shock absorption head comprises a hollow tube body and a hinge joint arranged at one end of the tube body, a hinge joint through hole and a screw hole are formed in the hinge joint, the hinge joint through hole is formed in the hinge joint through hole and the axis of the tube body, the hinge joint through the screw hole is coaxial with the axis of the tube body, the hinge joint through hole is formed in the hinge joint through the screw hole, the hinge joint through the rear end and the tube, one end of the telescopic tube is provided with a sealing plate and extends into the other end of the shock absorption tail, the rear frame is rotationally connected with the shock absorption through the other side, the shock absorption tail is connected with the shock absorber, the left frame, the frame is connected with the left side frame, and the shock absorber, and the side and the frame, and the shock absorber body and the frame, and the side and the shock absorber. The shock absorber with the improved structure is arranged between the rear frame and the middle tube, when vibration occurs, the shaft tube is used as a rotation center, the rear frame is connected with the shock absorber tail, the telescopic tube is driven to stretch out and draw back in the shock absorber head tube body, the shock absorption effect is achieved under the action of the elastic body, the tube body also has a small rotation angle when the telescopic tube stretches out and draws back, the small-angle rotation is achieved through the hinging of the hinging head and the middle tube, the rear frame comprises a left side frame and a right side frame, a four-sided pyramid-like structure comprising four sides is formed among the end face, the middle tube, the shock absorber and the shaft tube, the shock absorber comprises a top shock absorption surface, a right side stress surface, a left side stress surface and a bottom bearing surface, and the shock absorber is of a relatively stable structure and can also play a good shock absorption property. As a preferable scheme of the utility model, the top parts of one sides of the left side frame and the right side frame, which are close to the middle pipe, are connected with each other through two fixing pieces, the connecting pipe of the damping tail is arranged between the two fixing pieces and is connected with the two fixing pieces, the bottoms of one sides of the left side frame and the right side frame, which are close to the middle pipe, are respectively provided with a shaft lug, and the shaft lugs are respectively connected with two ends of the shaft barrel. The left side frame, right side frame of this scheme are close to the one end interconnect about the well pipe,