Damping frame structure

Abstract

The utility model provides a shock-absorbing frame structure, which relates to the field of frames and comprises a frame tube, a head tube arranged at the front end of the frame tube, a middle tube arranged at the rear end of the frame tube, a five-way seat connected to the bottom of the middle tube, a rear wheel fork connected to the frame tube and comprising a rear upper fork and a rear lower fork connected with the five-way seat. The rear upper fork is connected with the frame tube through a damping piece, the damping piece comprises an elastic damping seat and a mounting seat which are arranged in the frame tube, one end of the mounting seat is mounted on the frame tube through a pin shaft, and the other end of the mounting seat is movably connected with the elastic damping seat and the rear upper fork through pin shafts; and a butt joint seat which is in butt joint with two fork pipes in the rear upper fork is formed on the elastic damping seat. Compared with the prior art, according to the damping frame structure, the elastic damping seat is installed in the frame pipe, the rear upper fork is connected with the elastic damping seat through the pin shaft, the rear upper fork is used for extruding the elastic damping seat to achieve the damping effect, the structure is simple, and cost is reduced; and the damping piece is hidden in the frame tube, so that the attractiveness is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frames, and in particular to a shock-absorbing vehicle frame structure. Background Technology

[0002] The frame is an important part of bicycles and electric bikes, serving functions such as support and connection. For riding comfort, existing frames not only need to have supporting strength but also shock absorption.

[0003] Current shock absorption systems typically employ top-and-bottom mounting, installing shock absorbers on the bottom tube or rear fork to absorb vibrations on bumpy roads. However, this method is limited by the frame structure, and the mounting points don't provide optimal overall frame damping. Furthermore, the high cost of shock absorbers increases the overall cost of the bike, and their external mounting affects the bike's appearance, failing to meet current market demands. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a shock-absorbing frame structure that is simple in structure, easy to install, and reduces costs.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A shock-absorbing bicycle frame structure includes a frame tube, a head tube at the front end of the frame tube, a center tube at the rear end of the frame tube, a bottom bracket connected to the bottom of the center tube, and a rear fork connected to the frame tube. The rear fork includes a rear upper fork and a rear lower fork. The rear lower fork is connected to the bottom bracket, and the rear upper fork is connected to the frame tube via a shock absorber. The shock absorber includes an elastic shock absorber seat and a mounting seat placed inside the frame tube. One end of the mounting seat is mounted on the frame tube by a pin, and the other end of the mounting seat is movably connected to the elastic shock absorber seat and the rear upper fork by a pin. The elastic shock absorber seat has a mating seat that mates with the two fork tubes of the rear upper fork.

[0007] Preferably, the elastic shock absorber includes a seat body, two docking seats are respectively disposed on both sides of the seat body, the front end of the seat body forms a placement end, the rear end of the seat body forms a connection end, and the connection end is provided with a shock-absorbing connection hole.

[0008] More preferably, one end of the mounting base is provided with an upper pin hole, and the other end of the mounting base is provided with an insertion groove for inserting the connecting end, and both sides of the insertion groove are provided with lower pin holes corresponding to the shock-absorbing connecting holes.

[0009] More preferably, the frame tube is provided with a mounting groove for accommodating the elastic shock absorber seat and the mounting seat. The front end of the mounting groove forms a slot for inserting the mounting end, and the side arm at the rear end of the mounting groove forms a pin hole corresponding to the upper pin hole.

[0010] More preferably, the rear side wall of the mounting slot is provided with a mounting notch for mounting the docking seat.

[0011] More preferably, the elastic shock absorber is placed at an angle in the mounting groove of the frame tube.

[0012] More preferably, the frame tubes include a front frame tube and a rear frame tube, and the front frame tube and the rear frame tube are connected by a quick-release structure.

[0013] More preferably, the head tube is fitted with a rotatable front wheel fork.

[0014] More preferably, the elastic shock absorber seat is made of rubber material.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a shock-absorbing frame structure in which an elastic shock absorber is installed inside the frame tube, and the rear upper fork in the rear wheel fork is connected to the elastic shock absorber through a pin. In this way, when vibration occurs, the rear upper fork compresses the elastic shock absorber to achieve a shock absorption effect. The structure is simple, easy to install, and reduces costs. Furthermore, the shock absorber is hidden inside the frame tube, which improves the overall aesthetics of the bicycle or electric vehicle, reduces the damage to the shock absorber caused by external factors such as impact damage or natural corrosion, and can extend the service life of the elastic shock absorber. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a shock-absorbing vehicle frame structure provided by this utility model.

[0017] Figure 2 This is an exploded view of a shock-absorbing vehicle frame structure provided by this utility model.

[0018] Figure 3 This is a cross-sectional view of a shock-absorbing vehicle frame structure provided by this utility model.

[0019] Figure 4 This is an exploded view of the shock-absorbing component in a shock-absorbing vehicle frame structure provided by this utility model.

[0020] Figure 5 This is a bottom view of the beam tube in a shock-absorbing frame structure provided by this utility model. Detailed Implementation

[0021] The preferred embodiments of this utility model will be described in detail with reference to the accompanying drawings.

[0022] Figures 1 to 5 This is a preferred embodiment of a shock-absorbing vehicle frame structure provided by this utility model. For example... Figures 1 to 5As shown, the shock-absorbing frame structure includes a frame tube 10, a head tube 20 at the front end of the frame tube 10, a center tube 30 at the rear end of the frame tube 10, and a bottom bracket 40 connected to the bottom of the center tube 30. The frame tube is also connected to a rear fork 50, which includes a top fork 51 and a bottom fork 52. The bottom fork 52 is connected to the bottom bracket 40, and the top fork 51 is connected to the frame tube 10 via a shock absorber 60. The shock absorber 60 includes an elastic shock absorber 61 housed within the frame tube 10 and a mounting base 62. One end of the mounting base 61 is mounted on the frame tube 10 by a pin, and the other end of the mounting base 62 is movably connected to the elastic shock absorber 61 and the rear upper fork 51 by a pin. The elastic shock absorber 61 has a docking seat 611 that mates with the two fork tubes 5101 in the rear upper fork 51. In this way, the rear upper fork 51 and the frame tube 10 are movably connected by the shock absorber 60. When encountering bumps, the two fork tubes in the rear upper fork 51 squeeze the docking seat 611 in the elastic shock absorber 61 to achieve the shock absorption effect. The overall structure is simple and easy to install.

[0023] The elastic shock absorber 61 includes a body 611, two mating seats 612 respectively disposed on both sides of the body 611, a mounting end 613 formed at the front end of the body 611, and a connecting end 614 formed at the rear end of the body 611, the connecting end 614 having a shock-absorbing connecting hole 6141; one end of the mounting seat 62 has an upper pin hole 621, and the other end of the mounting seat has an insertion groove 622 for inserting the connecting end, the two sides of the insertion groove 622 having lower pin holes 623 corresponding to the shock-absorbing connecting hole. The connecting end 614 of the seat body 611 is inserted into the insertion slot 622 of the mounting seat 62. The mounting seat 62 is movably positioned in the frame tube 10 by the upper pin hole 621 cooperating with the pin. The lower pin hole 623, the shock absorption connection hole 6141, and the fork tube holes of the two fork tubes 5101 in the rear upper fork 51 are cooperating with the pin. When bumping, the two fork tubes in the rear upper fork 51 squeeze the two docking seats 612. At the same time, under the action of the pin, the mounting seat 62 simultaneously squeezes the seat body 611 and the mounting end 613.

[0024] The frame tube 10 has a mounting groove 11 for accommodating the elastic shock absorber 61 and the mounting base 62. The front end of the mounting groove 11 forms a slot 111 for inserting the mounting end 613. A pin hole 112 corresponding to the upper pin hole 621 is formed on the side arm at the rear end of the mounting groove 11. A cover plate 114 is provided at the front end of the mounting groove 11, making the slot 111 five-sided closed. The mounting end 613 of the elastic shock absorber 61 is inserted into the slot 111, thus preventing the entire elastic shock absorber 61 from detaching. The elastic shock absorber 61 and the mounting base 62 are concealed within the frame tube 10, improving the overall aesthetics of the bicycle or electric vehicle, reducing damage to the shock absorber caused by external factors such as impact damage or natural corrosion, and extending the service life of the elastic shock absorber.

[0025] The rear side wall of the mounting groove 11 is provided with a mounting notch 113 for mounting the docking seats. When the seat body 611, mounting end 613, and connecting end 614 of the elastic shock absorber 61 are in the mounting groove 11, the two docking seats 612 are in the notch 113, and the two fork tubes 5101 of the rear upper fork are in the notch 113 and cooperate with the pin. In this way, when the two fork tubes 5101 are squeezed by the docking seats 612 during bumps, the docking seats 612 quickly contact the side wall of the notch 113 to form a buffer, thereby reducing the feeling of bumps. To increase the contact area, the two sides of the frame tube 10 are also provided with protrusions 12 that dock with the docking seats 612. When the docking seats 612 are squeezed, the docking seats 612 quickly contact the side wall of the notch 113 and the protrusions 12.

[0026] Because the frame tube 10 is tilted, with the front end higher than the rear end, the elastic shock absorber 61 is tilted within the mounting groove 11 of the frame tube 10. This allows the compressive force from the rear upper fork to be decomposed into lateral and longitudinal components, thus compressing the elastic shock absorber 61 from both the lateral and longitudinal directions, reducing stress concentration in one direction. The elastic shock absorber 60 is made of rubber.

[0027] like Figure 1 As shown, the frame tube 10 can be integrally formed or have a foldable structure. The frame tube 10 includes a front frame tube 101 and a rear frame tube 102. The front frame tube 101 and the rear frame tube 102 are connected by a quick-release structure 70 for easy folding. The head tube 20 is fitted with a rotatable front fork 80.

[0028] This utility model provides a shock-absorbing frame structure that can be applied to bicycles or electric vehicles. It has a simple structure, is easy to install, and has a significant shock-absorbing effect.

[0029] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A shock-absorbing bicycle frame structure, comprising a frame tube, a head tube at the front end of the frame tube, a center tube at the rear end of the frame tube, and a bottom bracket connected to the bottom of the center tube, characterized in that, The frame tube is also connected to a rear wheel fork, which includes a rear upper fork and a rear lower fork. The rear lower fork is connected to a bottom bracket, and the rear upper fork is connected to the frame tube via a shock absorber. The shock absorber includes an elastic shock absorber seat and a mounting seat placed inside the frame tube. One end of the mounting seat is mounted on the frame tube by a pin, and the other end of the mounting seat is movably connected to the elastic shock absorber seat and the rear upper fork by a pin. The elastic shock absorber seat has a mating seat that mates with the two fork tubes of the rear upper fork.

2. The shock-absorbing frame structure according to claim 1, characterized in that: The elastic shock absorber includes a main body, two docking seats are respectively arranged on both sides of the main body, the front end of the main body forms a placement end, the rear end of the main body forms a connection end, and the connection end is provided with a shock absorber connection hole.

3. The shock-absorbing frame structure according to claim 2, characterized in that: One end of the mounting base is provided with an upper pin hole, and the other end of the mounting base is provided with an insertion groove for the connection end to be inserted. The two sides of the insertion groove are provided with lower pin holes corresponding to the shock-absorbing connection holes.

4. The shock-absorbing frame structure according to claim 3, characterized in that: The frame tube is provided with a mounting groove for accommodating the elastic shock absorber seat and the mounting seat. The front end of the mounting groove forms a slot for the mounting end to be inserted, and the side arm at the rear end of the mounting groove forms a pin hole corresponding to the upper pin hole.

5. The shock-absorbing frame structure according to claim 4, characterized in that: The rear side walls of the mounting slot are respectively provided with mounting notches for mounting the docking seat.

6. The shock-absorbing frame structure according to claim 1, characterized in that: The frame tubes include a front frame tube and a rear frame tube, which are connected by a quick-release structure.

7. The shock-absorbing frame structure according to claim 1, characterized in that: The head tube is fitted with a rotatable front wheel fork.

8. The shock-absorbing frame structure according to claim 1, characterized in that: The elastic shock absorber seat is made of rubber material.

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