Semi-hidden type three-point damping frame structure

Abstract

The utility model discloses a semi-hidden type three-point shock absorption bicycle frame structure which comprises a bicycle frame body and a shock absorber, a seat tube and a rear wheel fork are arranged on the bicycle frame body, the rear wheel fork comprises a rear upper fork and a rear lower fork, the lower portion of the seat tube is hinged to one end of the rear lower fork through a first connecting piece, and the other end of the rear lower fork is hinged to the shock absorber. The upper portion of the seat tube is hinged to one end of the rear upper fork through a damper, a limiting hole is formed in the side, close to the rear wheel fork, of the seat tube, the damper is obliquely arranged in the seat tube and extends out of the limiting hole, and one end of the damper is rotationally connected with the interior of the seat tube through a second connecting piece. The other end of the shock absorber extending out of the limiting hole is rotationally connected with one end of the rear upper fork through a third connecting piece. According to the shock-absorbing bicycle frame structure, installation of the shock-absorbing bicycle frame structure is achieved through the three hinged structures, energy absorption, shock absorption and buffering can be conducted on shock, the semi-hidden design is adopted, part of the shock-absorbing structure is hidden in a bicycle frame body, the overall attractiveness is good, damage of external factors to a shock absorber is reduced, and the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, and more specifically to a semi-hidden three-point shock-absorbing frame structure. Background Art

[0002] Bicycles can be used as a means of transportation for commuting, traveling and exercising. The performance that a bicycle should have varies depending on the riding venue. For example, in bumpy terrain or rugged terrain such as mountains, bicycles are usually required to have higher shock absorption performance. However, the shock absorption structure of a traditional bicycle frame is usually installed exposed, which affects the overall appearance of the bicycle, and the exposed shock absorber is more easily damaged externally, such as by impact, which reduces its service life.

[0003] For example, utility model patent announcement number CN215794257U discloses a shock-absorbing structure under the seat of an electric bicycle, including a front frame, a rear frame, a shock absorber, and a connecting piece. The front frame includes an upper longitudinal tube, a lower oblique tube, and a vertical tube. The rear frame includes an upper fork and a lower fork. The front end of the lower fork is hinged to the rear end of the lower oblique tube, the rear end of the upper fork is hinged to the rear end of the lower fork, the connecting piece is hinged to the vertical tube, the rear end of the connecting piece is hinged to the front end of the upper fork, one end of the shock absorber is hinged to the lower oblique tube, and the other end of the shock absorber is hinged to the front end of the connecting piece. The shock-absorbing structure of this patent adopts a traditional five-point shock-absorbing structure. The shock absorber is vertically fixed between the longitudinal tube and the lower oblique tube. Its structure is relatively complex and has a poor shock-absorbing effect on the overall frame. The exposure of its shock-absorbing structure will also affect the overall appearance of the bicycle. The exposed shock absorber is also easily damaged by impact or natural corrosion, shortening its service life. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and to provide a semi-hidden three-point shock-absorbing frame structure that can solve the problems of the complex structure of the traditional shock-absorbing frame and the unsightly and easily damaged appearance caused by the leakage of the shock-absorbing frame structure.

[0005] To achieve the above-mentioned purpose, the utility model provides a semi-hidden three-point shock-absorbing frame structure, including a bicycle frame and a shock absorber, wherein a seat tube and a rear wheel fork are arranged on the bicycle frame, and the rear wheel fork includes a rear upper fork and a rear lower fork, the lower part of the seat tube is hinged to one end of the rear lower fork through a first connecting member, and the upper part of the seat tube is hinged to one end of the rear upper fork through a shock absorber, the seat tube is arranged to be a hollow structure, and a limiting hole is provided on a side of the seat tube close to the rear wheel fork, the shock absorber is obliquely arranged inside the seat tube and extends out of the limiting hole, one end of the shock absorber is rotatably connected to the inside of the seat tube through a second connecting member, and the other end of the shock absorber extending out of the limiting hole is rotatably connected to one end of the rear seat fork through a third connecting member.

[0006] Preferably, first connecting seats are symmetrically protruded on the two inner side walls of the seat tube, and the two first connecting seats are each provided with a first axial hole communicating with the two outer side walls of the seat tube.

[0007] Preferably, a second connecting seat is provided at one end of the shock absorber, and a third connecting seat is provided at the other end of the shock absorber, a second axial hole is provided on the second connecting seat, and a third axial hole is provided on the third connecting seat, the second axial hole of the shock absorber is located between the two first connecting seats of the seat tube and is coaxially arranged with the two first axial holes, and the second axial hole is rotatably connected to the first axial holes on both sides through a second connecting member.

[0008] Preferably, a first hinge groove is provided at one end of the upper fork, and first hinge holes are symmetrically provided on both side walls of the first hinge groove; a second hinge groove is provided at one end of the lower fork, and second hinge holes are symmetrically provided on both side walls of the second hinge groove; the third axial hole of the shock absorber is located in the middle of the first hinge groove of the upper fork and is coaxially arranged with the two first hinge holes; the third axial hole is rotatably connected to the first hinge holes on both sides through a third connecting member.

[0009] Preferably, a motor housing for mounting an external motor is provided at the lower end of the seat tube, and a fourth connecting seat is provided at the connecting portion between the lower end of the seat tube close to the side of the rear wheel fork and the outer side of the motor housing, the top surface of the fourth connecting seat is arranged in an arc-shaped transition with the side wall of the seat tube, a fourth axial hole is horizontally penetrated through the fourth connecting seat, the fourth axial hole of the seat tube is located between the second hinge grooves of the rear lower fork and is coaxially arranged with the two second hinge holes, and the fourth axial hole is rotatably connected to the second hinge holes on both sides through the first connecting piece.

[0010] Preferably, the first connecting member, the second connecting member and the third connecting member are all configured as bolts or hinge shafts.

[0011] Preferably, the shock absorber is configured as an oil-gas spring shock absorber, and the shock absorber is provided with an air charging port and a pressure regulating valve.

[0012] Preferably, the rear wheel fork is an integrally formed structure, and the upper fork and the lower fork located on the same side of the rear wheel fork together form a triangular structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model has a simple structure and a reasonable design, adopts a three-point shock-absorbing frame structure design, and realizes the installation of the shock-absorbing structure of the bicycle frame through three hinged structures, which can absorb energy, reduce shock and buffer vibration, has reasonable force and compact structure, and can achieve good shock-absorbing effect. In addition, a semi-hidden design is adopted to hide part of the shock-absorbing structure in the bicycle frame, thereby improving the overall aesthetics of the bicycle, reducing damage to the shock absorber caused by external factors such as impact damage or natural corrosion, and can extend the service life of the shock absorber, while also reducing the probability of shock absorber failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model;

[0018] Figure 3 This is an enlarged schematic diagram of a partial structure of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model. Figure 1 ;

[0019] Figure 4 This is an enlarged schematic diagram of a partial structure of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model. Figure 2 ;

[0020] Figure 5 It is a partial structural exploded schematic diagram of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model (connecting parts are hidden);

[0021] Figure 6 It is a structural schematic diagram of a shock absorber of a semi-hidden three-point shock-absorbing frame structure provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Please refer to Figure 1 An embodiment of the utility model provides a semi-hidden three-point shock-absorbing frame structure, including a bicycle frame 1, a shock absorber 2, a seat tube 3, a rear wheel fork 4, a first connecting member 5, a second connecting member 6, a third connecting member 7 and a motor housing 8. The various components of this embodiment are described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, the bicycle frame 1 may be provided with a seat tube 3 and a rear wheel fork 4. Preferably, the rear wheel fork 4 may be an integrally formed structure, and the upper fork 41 and the lower fork 42 on the same side of the rear wheel fork 4 may form a triangular structure. The rear wheel fork 4 may cooperate with the hook to mount the rear wheel of the bicycle during assembly.

[0025] like Figure 2 and Figure 4 As shown, the rear wheel fork 4 may include a rear upper fork 41 and a rear lower fork 42, the lower portion of the seat tube 3 is hinged to one end of the rear lower fork 42 via a first connecting member 5, the upper portion of the seat tube 3 is hinged to one end of the rear upper fork 41 via a shock absorber 2, the seat tube 3 is configured as a hollow structure, a limiting hole 31 is provided on one side of the seat tube 3 close to the rear wheel fork 4, the shock absorber 2 is obliquely disposed inside the seat tube 3 and extends out of the limiting hole 31, one end of the shock absorber 2 is rotatably connected to the inside of the seat tube 3 via a second connecting member 6, and the other end of the shock absorber 2 extending out of the limiting hole 31 is rotatably connected to one end of the rear upper fork 41 via a third connecting member 7.

[0026] Among them, the shock absorber 2 is tiltedly arranged inside the seat tube 3, which can decompose the vertical force, reduce the overall vibration effect of the bicycle during riding, and improve the riding experience and comfort.

[0027] like Figure 3 As shown, first connecting seats 32 may be symmetrically protruded on the two inner side walls of the seat tube 3 , and the two first connecting seats 32 are each provided with a first axial hole 321 communicating with the two outer side walls of the seat tube 3 .

[0028] like Figure 6As shown, a second connecting seat 21 may be provided at one end of the shock absorber 2, and a third connecting seat 22 may be provided at the other end of the shock absorber 2. A second axial hole 211 is provided on the second connecting seat 21, and a third axial hole 221 is provided on the third connecting seat 22. The second axial hole 211 of the shock absorber 2 is located between the two first connecting seats 32 of the seat tube 3 and is coaxially arranged with the two first axial holes 321. The second axial hole 211 is rotatably connected to the first axial holes 321 on both sides through a second connecting member 6.

[0029] like Figure 5 As shown, a first hinge groove 411 may be provided at one end of the rear seat fork 41, and first hinge holes 412 are symmetrically provided on both side walls of the first hinge groove 411; a second hinge groove 421 is provided at one end of the rear lower fork 42, and second hinge holes 422 are symmetrically provided on both side walls of the second hinge groove 421; the third axial hole 221 of the shock absorber 2 is located in the middle of the first hinge groove 411 of the rear seat fork 41 and is coaxially arranged with the two first hinge holes 412; the third axial hole 221 is rotatably connected to the first hinge holes 412 on both sides through a third connecting member 7.

[0030] Specifically, a motor housing 8 for mounting an external motor may be provided at the lower end of the seat tube 3, and a fourth connecting seat 33 is provided at the connection portion between the lower end of the seat tube 3, close to the side of the rear wheel fork 4, and the outer side of the motor housing 8. The top surface of the fourth connecting seat 33 is arranged in an arc-shaped transition with the side wall of the seat tube 3, and a fourth axial hole 331 is horizontally penetrated through the fourth connecting seat 3. The fourth axial hole 331 of the seat tube 3 is located between the second hinge grooves 421 of the rear lower fork 42 and is coaxially arranged with the two second hinge holes 422. The fourth axial hole 331 is rotatably connected to the second hinge holes 422 on both sides through the first connecting member 5.

[0031] In this embodiment, the first connecting member 5, the second connecting member 6 and the third connecting member 7 can be configured as bolts or articulated shafts. The articulated shafts of this embodiment respectively cooperate with the shaft holes, and specific reference can be made to the prior art. The seat tube, the shock absorber and the rear wheel fork can be articulated with each other through the articulated shafts, and are not prone to loosening, which helps to improve the connection support and reliability of the shock-absorbing frame structure.

[0032] Furthermore, the shock absorber 2 can be set as an oil-gas spring shock absorber, and the shock absorber 2 is provided with an air charging port 23 and a pressure regulating valve 24. In implementation, air can be charged into the hydraulic cylinder of the oil-gas spring shock absorber through the air charging port 23, and then the pressure of the oil-gas spring shock absorber can be adjusted through the pressure regulating valve 24. When the pressure regulating valve is adjusted to lock, the shock absorbing function can be turned off, so that it can be adjusted according to the needs of riding comfort, for example, the shock absorbing function can be turned on when riding on a bumpy road, or the shock absorbing function can be turned off when riding on a flat road, making riding more relaxed and comfortable.

[0033] In specific implementation, when the user rides the bicycle, the user provides downward pressure to the seat tube through the seat cushion, and the ground can provide upward pressure to the rear wheel fork through the rear wheel. When the bicycle is ridden on a bumpy road section, the seat tube or the rear wheel fork is very susceptible to external pressure and transmitted to the entire bicycle frame, thereby generating a large vibration. The external pressure is transmitted through the above-mentioned shock-absorbing frame structure, which can force the shock absorber to move axially in the direction of the shock-absorbing spring inside the shock absorber. The shock-absorbing spring is stretched or compressed as the shock absorber moves, and can absorb energy and shock-absorb the pressure, thereby achieving a good shock-absorbing purpose and shock-absorbing effect.

[0034] To sum up, the utility model has a simple structure and a reasonable design. It adopts a three-point shock-absorbing frame structure and realizes the installation of the shock-absorbing structure of the bicycle frame through three hinged structures. It can absorb energy, reduce shock and buffer vibration. It has reasonable force and compact structure, and can achieve good shock-absorbing effect. In addition, it also adopts a semi-hidden design to hide part of the shock-absorbing structure in the bicycle frame, which improves the overall appearance of the bicycle, reduces damage to the shock absorber caused by external factors such as impact damage or natural corrosion, can extend the service life of the shock absorber, and at the same time reduce the probability of shock absorber failure.

[0035] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A semi-hidden three-point shock-absorbing frame structure, characterized in that: The bicycle frame (1) comprises a seat tube (3) and a rear wheel fork (4), wherein the seat tube (3) and the rear wheel fork (4) are arranged on the bicycle frame (1), wherein the rear wheel fork (4) comprises a rear upper fork (41) and a rear lower fork (42), wherein the lower part of the seat tube (3) is hingedly connected to one end of the rear lower fork (42) via a first connecting member (5), and the upper part of the seat tube (3) is hingedly connected to one end of the rear upper fork (41) via the shock absorber (2), and the seat tube (3) is arranged The seat tube (3) has a hollow structure, a limiting hole (31) is provided on one side of the seat tube (3) close to the rear wheel fork (4), the shock absorber (2) is tiltedly arranged inside the seat tube (3) and extends out of the limiting hole (31), one end of the shock absorber (2) is rotatably connected to the inside of the seat tube (3) through a second connecting member (6), and the other end of the shock absorber (2) extending out of the limiting hole (31) is rotatably connected to one end of the rear seat fork (41) through a third connecting member (7).

2. A semi-hidden three-point shock-absorbing frame structure according to claim 1, characterized in that: First connecting seats (32) are symmetrically protruded on the two inner side walls of the seat tube (3), and the two first connecting seats (32) are each provided with a first axial hole (321) communicating with the two outer side walls of the seat tube (3).

3. A semi-hidden three-point shock-absorbing frame structure according to claim 2, characterized in that: A second connecting seat (21) is provided at one end of the shock absorber (2), and a third connecting seat (22) is provided at the other end of the shock absorber (2); a second axial hole (211) is provided on the second connecting seat (21), and a third axial hole (221) is provided on the third connecting seat (22); the second axial hole (211) of the shock absorber (2) is located between two first connecting seats (32) of the seat tube (3) and is coaxially arranged with the two first axial holes (321); the second axial hole (211) is rotatably connected to the first axial holes (321) on both sides through a second connecting member (6).

4. The semi-hidden three-point shock-absorbing frame structure according to claim 3 is characterized in that: A first hinge groove (411) is provided at one end of the upper fork (41), and first hinge holes (412) are symmetrically provided on both side walls of the first hinge groove (411); a second hinge groove (421) is provided at one end of the lower fork (42), and second hinge holes (422) are symmetrically provided on both side walls of the second hinge groove (421); a third axial hole (221) of the shock absorber (2) is located in the middle of the first hinge groove (411) of the upper fork (41) and is coaxially arranged with the two first hinge holes (412); the third axial hole (221) is rotatably connected to the first hinge holes (412) on both sides through a third connecting member (7).

5. The semi-hidden three-point shock-absorbing frame structure according to claim 4 is characterized in that: A motor housing (8) for mounting an external motor is disposed at the lower end of the seat tube (3); a fourth connecting seat (33) is disposed at a connection portion between the lower end of the seat tube (3) and the outer side of the motor housing (8) on a side close to the rear wheel fork (4); a top surface of the fourth connecting seat (33) and a side wall of the seat tube (3) are arranged in an arc-shaped transition; a fourth axial hole (331) is horizontally penetrated through the fourth connecting seat (33); the fourth axial hole (331) of the seat tube (3) is located between the second hinge grooves (421) of the rear lower fork (42) and is coaxially arranged with the two second hinge holes (422); the fourth axial hole (331) is rotatably connected to the second hinge holes (422) on both sides through a first connecting member (5).

6. The semi-hidden three-point shock-absorbing frame structure according to claim 1 is characterized in that: The first connecting member (5), the second connecting member (6) and the third connecting member (7) are all configured as bolts or hinge shafts.

7. The semi-hidden three-point shock-absorbing frame structure according to claim 1 is characterized in that: The shock absorber (2) is configured as an oil-gas spring shock absorber, and the shock absorber (2) is provided with an air charging port (23) and a pressure regulating valve (24).

8. The semi-hidden three-point shock-absorbing frame structure according to claim 1 is characterized in that: The rear wheel fork (4) is an integrally formed structure, and the upper fork (41) and the lower fork (42) located on the same side of the rear wheel fork (4) together form a triangular structure.

Images