Middle shaft rotating shock absorber for rear wheel of bicycle

Abstract

The utility model discloses a bicycle rear wheel center shaft rotation shock absorber, including cushioning mechanism, first hinge joint fixed block and second hinge joint fixed block, the second hinge joint fixed block is hinged with the rotation connection mechanism, one end of the rotation connection mechanism is fixedly connected with the rear fork fixed rod, and the rear fork fixed rod is fixedly connected with the rear fork fixed rod. One end of the rotary connecting mechanism is rotationally connected with the cushioning mechanism, and a cushioning adjusting mechanism is arranged on the cushioning mechanism. The first hinge fixing block and the second hinge fixing block are mounted on the frame, and then the arranged rotary connecting mechanism is connected with the wheel rear fork and the cushioning mechanism, so that force generated by the rear fork and a rear wheel can be transferred to the cushioning mechanism through rotation of the rotary connecting mechanism to be buffered; and the arranged cushioning adjusting mechanism can adjust the cushioning effect of the cushioning mechanism according to the weight of the user, and the connecting position of the cushioning mechanism and the rotary connecting mechanism can be adjusted, so that the cushioning position and the cushioning effect of the cushioning mechanism can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a central axis rotary shock absorber for a bicycle rear wheel. Background Art

[0002] With people's pursuit of health, the purpose of cycling has gradually changed from transportation to fitness, and the cycling road conditions are no longer limited to ordinary roads. Mountain roads, rocky slopes and other bumpy road conditions have also become options for people's fitness cycling.

[0003] When riding on bumpy roads such as bumpy roads and rocky slopes, a set of shock absorbers needs to be added to the rear fork and the rear wheel to improve the riding experience. When the rear fork is used for shock absorption, the rear fork needs to be rotated along the frame, so a rotary shock absorber is needed for shock absorption. However, the existing rotary shock absorber has a relatively fixed shock absorption position when in use, so the experience is relatively different when used by users of different weights. For this reason, we propose a central axis rotary shock absorber for the rear wheel of a bicycle. Utility Model Content

[0004] The purpose of the utility model is to provide a middle shaft rotary shock absorber for a bicycle rear wheel, so as to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A bottom-axis rotary shock absorber for a bicycle rear wheel, comprising a damping mechanism, a first hinged fixing block, and a second hinged fixing block, wherein the first hinged fixing block is mounted on a lower tube of the frame, and the second hinged fixing block is fixedly mounted on a seat tube of the frame, a rotary connection mechanism is hinged on the second hinged fixing block, one end of the rotary connection mechanism is fixedly connected to a rear fork fixing rod, the rear fork fixing rod is hinged to the rear fork of the frame, an end of the rotary connection mechanism away from the rear fork fixing rod is rotatably connected to the damping mechanism, the bottom of the damping mechanism is rotatably connected to the first hinged fixing block via the first hinged fixing block, and a damping adjustment mechanism for elastically adjusting the damping mechanism is provided on the damping mechanism.

[0006] Furthermore, the shock-absorbing mechanism includes a limiting sleeve, an upper spring support plate, a telescopic rod, a spring, an upper fixed seat, a lower fixed seat and a connecting column. The connecting column is sleeved with a shock-absorbing adjustment mechanism, the top of the connecting column is fixedly installed with a limiting sleeve, the interior of the limiting sleeve is slidably connected to the telescopic rod, the bottom of the upper spring support plate and the outside of the telescopic rod are provided with a spring, the bottom of the spring is fitted with the shock-absorbing adjustment mechanism, the top of the upper spring support plate and the bottom of the connecting column are fixedly connected with an upper fixed seat and a lower fixed seat respectively, and fixed bearings are provided inside the upper fixed seat and the lower fixed seat.

[0007] Furthermore, the shock-absorbing adjustment mechanism includes a positioning seat, a telescopic sleeve, a first adjustment slot and a lower spring support piece. Positioning seats are fixedly installed on both sides of the connecting column, a telescopic sleeve is sleeved on the connecting column, and a lower spring support piece is fixedly installed on the top of the telescopic sleeve. Multiple groups of annular first adjustment slots are provided on the telescopic sleeve, and the top heights of the multiple groups of the first adjustment slots are different, and the top heights of the first adjustment slots that are fitted with the two groups of the positioning seats are the same.

[0008] Furthermore, the rotating connection mechanism includes a connecting plate, a fixing column, a mounting seat and a locking bolt. The connecting plate is arranged in two groups. The two groups of connecting plates are fixedly connected by a fixing column. The bottom of the connecting plate is fixedly connected to the mounting seat. The mounting seat is rotatably connected to the second hinged fixed block through a second hinged rod. A rear fork fixing rod is provided at one end of the two groups of connecting plates.

[0009] Furthermore, the two groups of connecting plates have multiple groups of second adjustment slots extending through one end away from the rear fork fixing rod, and the upper fixing seat is arranged between the two groups of connecting plates. A locking bolt inserted into the interior of the upper fixing seat is provided on the connecting plate at a position corresponding to the second adjustment slot.

[0010] Furthermore, the first articulated fixing block, the rotating connection mechanism and the second articulated fixing block are all made of rigid materials, and the first articulated fixing block and the second articulated fixing block are welded to the frame down tube and the frame seat tube.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the first hinged fixing block and the second hinged fixing block provided in the present invention are installed on the frame downtube and the frame seat tube, and the subsequently provided rotating connection mechanism is connected to the wheel rear fork and the shock-absorbing mechanism, so that the force generated by the rear fork and the rear wheel can be transferred to the shock-absorbing mechanism through the rotation of the rotating connection mechanism for buffering, and the provided shock-absorbing adjustment mechanism can adjust the shock-absorbing effect of the shock-absorbing mechanism according to the user's weight, so that different riders can all obtain sufficient shock-absorbing effect, and the connection position of the shock-absorbing mechanism and the rotating connection mechanism can be adjusted, so that the shock-absorbing position and shock-absorbing effect of the shock-absorbing mechanism can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional connection structure of the shock absorbing mechanism and the shock absorbing adjustment mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the telescopic sleeve of the utility model;

[0015] Figure 4This is a schematic diagram of the three-dimensional structure of the rotary connection mechanism of the utility model.

[0016] In the figure: 1 shock absorbing mechanism, 2 first hinged fixing block, 3 rotation connection mechanism, 4 second hinged fixing block, 5 rear fork fixing rod, 6 first hinged rod, 7 shock absorbing adjustment mechanism, 8 limiting sleeve, 9 upper spring support plate, 10 telescopic rod, 11 spring, 12 upper fixing seat, 13 lower fixing seat, 14 fixed bearing, 15 connecting column, 16 positioning seat, 17 telescopic sleeve, 18 first adjustment slot, 19 lower spring support plate, 20 connecting plate, 21 fixing column, 22 mounting seat, 23 second hinged rod, 24 locking bolt, 25 second adjustment slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-4 The utility model provides a technical solution: a central axis rotary shock absorber for a bicycle rear wheel, comprising a damping mechanism 1, a first hinged fixing block 2 and a second hinged fixing block 4, wherein the first hinged fixing block 2 is mounted on the lower tube of the frame, the second hinged fixing block 4 is fixedly mounted on the upper tube of the frame, a rotary connection mechanism 3 is hinged on the second hinged fixing block 4, one end of the rotary connection mechanism 3 is fixedly connected to a rear fork fixing rod 5, the rear fork fixing rod 5 is hinged to the rear fork of the frame, the end of the rotary connection mechanism 3 away from the rear fork fixing rod 5 is rotatably connected to the damping mechanism 1, the bottom of the damping mechanism 1 is rotatably connected to the first hinged fixing block 2 through the first hinged fixing block 2, and a damping adjustment mechanism 7 for elastically adjusting the damping mechanism 1 is provided on the damping mechanism 1.

[0019] Among them, the first hinged fixing block 2 and the second hinged fixing block 4 are installed on the frame downtube and the frame seat tube. Such installation can install the first hinged fixing block 2 and the second hinged fixing block 4 at the five-way position of the frame, so as not to affect the rigidity of the frame. The rotating connection mechanism 3 is then connected to the rear fork of the wheel and the shock-absorbing mechanism 1, so that the force generated by the rear fork and the rear wheel can be transferred to the shock-absorbing mechanism 1 through the rotating connection mechanism 3 for buffering. The shock-absorbing adjustment mechanism 7 can adjust the shock-absorbing effect of the shock-absorbing mechanism 1 according to the user's weight, so that different riders can get sufficient shock-absorbing effect, and the connection position of the shock-absorbing mechanism 1 and the rotating connection mechanism 3 can be adjusted, so that the shock-absorbing position and shock-absorbing effect of the shock-absorbing mechanism 1 can be adjusted.

[0020] See also Figure 1 and Figure 2 The damping mechanism 1 includes a limiting sleeve 8, an upper spring support piece 9, a telescopic rod 10, a spring 11, an upper fixed seat 12, a lower fixed seat 13 and a connecting column 15. The connecting column 15 is sleeved with a damping adjustment mechanism 7. The top of the connecting column 15 is fixedly installed with a limiting sleeve 8. The inside of the limiting sleeve 8 is slidably connected with the telescopic rod 10. The bottom of the upper spring support piece 9 and the outside of the telescopic rod 10 are provided with a spring 11. The bottom of the spring 11 is in contact with the damping adjustment mechanism 7. The top of the upper spring support piece 9 and the bottom of the connecting column 15 are fixedly connected with an upper fixed seat 12 and a lower fixed seat 13 respectively. Fixed bearings 14 are provided inside the upper fixed seat 12 and the lower fixed seat 13.

[0021] Among them, when the rotating connection mechanism 3 has a rotating downward force, the upper fixed seat 12 and the spring support plate 9 have a downward force, so that energy can be buffered by the spring 11, and during buffering, it can be limited by the limiting sleeve 8 and the telescopic rod 10 to ensure the normal operation of the shock absorbing mechanism 1.

[0022] See also Figure 1 、 Figure 2 and Figure 3 The shock-absorbing adjustment mechanism 7 includes a positioning seat 16, a telescopic sleeve 17, a first adjustment groove 18 and a lower spring support piece 19. The positioning seats 16 are fixedly installed on both sides of the connecting column 15. The telescopic sleeve 17 is sleeved on the connecting column 15. The top of the telescopic sleeve 17 is fixedly installed with a lower spring support piece 19. The telescopic sleeve 17 is provided with multiple groups of annular first adjustment grooves 18. The top heights of the multiple groups of the first adjustment grooves 18 are different, and the top heights of the first adjustment grooves 18 that are in contact with the two groups of the positioning seats 16 are the same.

[0023] Among them, when the elasticity of the spring 11 needs to be adjusted, the telescopic sleeve 17 is pushed upward to move upward along the connecting column 15, and the top height of the first adjustment groove 18 is different. Then, after the upward movement is completed, the telescopic sleeve 17 can be rotated to make the corresponding first adjustment groove 18 corresponding to the positioning seat 16, thereby completing the adjustment of the elasticity of the spring 11.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4The rotating connection mechanism 3 includes a connecting piece 20, a fixing column 21, a mounting seat 22 and a locking bolt 24. The connecting piece 20 is provided in two groups. The two groups of connecting pieces 20 are fixedly connected by the fixing column 21. The bottom of the connecting piece 20 is fixedly connected to the mounting seat 22. The mounting seat 22 is rotatably connected to the second hinged fixing block 4 through the second hinged rod 23. One end of the two groups of connecting pieces 20 is provided with a rear fork fixing rod 5.

[0025] Among them, the connecting piece 20 and the second hinged rod 23 set on the connecting piece 20 cooperate with each other, so that they can be installed with the second hinged fixing block 4, and the rear fork fixing rod 5 at one end of the connecting piece 5 is rotatably connected to the rear fork of the rear wheel of the vehicle. Then, when the rear fork of the rear wheel generates pressure, it can be fed back to the shock absorbing mechanism 1 for buffering.

[0026] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The two groups of connecting plates 20 are provided with multiple groups of second adjustment grooves 25 at one end away from the rear fork fixing rod 5, and the upper fixing seat 12 is arranged between the two groups of connecting plates 20. A locking bolt 24 is provided on the connecting plate 20 and at a position corresponding to the second adjustment groove 25 and inserted into the interior of the upper fixing seat 12.

[0027] Among them, when installing the connecting plate 20 and the shock-absorbing mechanism 1, the locking bolt 24 is inserted into the upper fixing seat 12 through the second adjustment groove 25 to complete the installation of the connecting plate 20 and the shock-absorbing mechanism 1, and the multiple groups of second adjustment grooves 25 opened can adjust the top installation position of the shock-absorbing mechanism 1, thereby adjusting the shock-absorbing position and shock-absorbing effect of the shock-absorbing mechanism 1.

[0028] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The manufacturing materials of the first articulated fixing block 2, the rotating connection mechanism 3 and the second articulated fixing block 4 are all rigid materials. The first articulated fixing block 2 and the second articulated fixing block 4 are welded to the frame down tube and the frame seat tube. The first articulated fixing block 2, the rotating connection mechanism 3 and the second articulated fixing block 4 made of rigid materials will not cause deformation during buffering, and the first articulated fixing block 2 and the second articulated fixing block 4 fixed by welding are more firmly fixed.

[0029] When in use, first, when the rotating connection mechanism 3 has a rotating downward pressure, the upper fixing seat 12 and the spring support plate 9 have a downward force, so that energy can be buffered by the spring 11, and during buffering, it can be limited by the limiting sleeve 8 and the telescopic rod 10 to ensure the normal operation of the shock absorbing mechanism 1. When the elasticity of the spring 11 needs to be adjusted, the telescopic sleeve 17 is pushed upward to move upward along the connecting column 15, and the top height of the first adjusting groove 18 is different. After the upward movement is completed, the telescopic sleeve 17 can be rotated to make the corresponding first adjusting groove 18 corresponding to the positioning seat 16, thereby completing the adjustment of the elasticity of the spring 11. The connecting piece 20 and the second hinged rod 23 set on the connecting piece 20 cooperate with each other, so that they can be installed with the second hinged fixing block 4, and the rear fork fixing rod 5 at one end of the connecting piece 5 is rotatably connected to the rear fork of the rear wheel of the vehicle. Subsequently, when the rear fork of the rear wheel generates pressure, it can be fed back to the shock-absorbing mechanism 1 for buffering. When the connecting piece 20 and the shock-absorbing mechanism 1 are installed, the locking bolt 24 is inserted into the upper fixing seat 12 through the second adjustment groove 25 to complete the installation of the connecting piece 20 and the shock-absorbing mechanism 1, and the multiple groups of second adjustment grooves 25 opened can adjust the top installation position of the shock-absorbing mechanism 1, thereby adjusting the shock-absorbing position and shock-absorbing effect of the shock-absorbing mechanism 1.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A central axis rotary shock absorber for a bicycle rear wheel, comprising a damping mechanism (1), a first hinged fixing block (2) and a second hinged fixing block (4), wherein the first hinged fixing block (2) is mounted on a downtube of the frame, and the second hinged fixing block (4) is fixedly mounted on a riser of the frame, characterized in that: A rotary connection mechanism (3) is hinged on the second hinged fixed block (4), one end of the rotary connection mechanism (3) is fixedly connected to a rear fork fixing rod (5), the rear fork fixing rod (5) is hinged to the rear fork of the frame, one end of the rotary connection mechanism (3) away from the rear fork fixing rod (5) is rotationally connected to the damping mechanism (1), the bottom of the damping mechanism (1) is rotationally connected to the first hinged fixed block (2) through the first hinged fixed block (2), and a damping adjustment mechanism (7) for elastically adjusting the damping mechanism (1) is provided on the damping mechanism (1).

2. The bicycle rear wheel bottom bracket rotary shock absorber according to claim 1, characterized in that: The damping mechanism (1) comprises a limiting sleeve (8), an upper spring support piece (9), a telescopic rod (10), a spring (11), an upper fixed seat (12), a lower fixed seat (13) and a connecting column (15); a damping adjustment mechanism (7) is sleeved on the connecting column (15); a limiting sleeve (8) is fixedly installed on the top of the connecting column (15); the interior of the limiting sleeve (8) is slidably connected to the telescopic rod (10); a spring (11) is provided at the bottom of the upper spring support piece (9) and outside the telescopic rod (10); the bottom of the spring (11) is fitted with the damping adjustment mechanism (7); the top of the upper spring support piece (9) and the bottom of the connecting column (15) are fixedly connected to the upper fixed seat (12) and the lower fixed seat (13), respectively; and fixed bearings (14) are provided inside the upper fixed seat (12) and the lower fixed seat (13).

3. The bicycle rear wheel bottom bracket rotary shock absorber according to claim 2, characterized in that: The damping adjustment mechanism (7) comprises a positioning seat (16), a telescopic sleeve (17), a first adjustment groove (18) and a lower spring support piece (19); the positioning seats (16) are fixedly installed on both sides of the connecting column (15); the telescopic sleeve (17) is sleeved on the connecting column (15); the lower spring support piece (19) is fixedly installed on the top of the telescopic sleeve (17); the telescopic sleeve (17) is provided with multiple groups of annularly arranged first adjustment grooves (18); the top heights of the multiple groups of the first adjustment grooves (18) are different, and the top heights of the first adjustment grooves (18) that are in contact with the two groups of the positioning seats (16) are the same.

4. The bicycle rear wheel bottom bracket rotary shock absorber according to claim 3, characterized in that: The rotary connection mechanism (3) comprises a connecting piece (20), a fixing column (21), a mounting seat (22) and a locking bolt (24); the connecting piece (20) is provided in two groups; the two groups of connecting pieces (20) are fixedly connected via the fixing column (21); the bottom of the connecting piece (20) is fixedly connected to the mounting seat (22); the mounting seat (22) is rotatably connected to the second hinged fixed block (4) via a second hinged rod (23); and a rear fork fixing rod (5) is provided at one end of the two groups of connecting pieces (20).

5. The bicycle rear wheel bottom bracket rotary shock absorber according to claim 4, characterized in that: The two groups of connecting pieces (20) are provided with a plurality of second adjustment slots (25) at one end away from the rear fork fixing rod (5), and the upper fixing seat (12) is arranged between the two groups of connecting pieces (20). The connecting pieces (20) are provided with locking bolts (24) at positions corresponding to the second adjustment slots (25) and are inserted into the interior of the upper fixing seat (12).

6. The bicycle rear wheel bottom bracket rotary shock absorber according to claim 5, characterized in that: The first hinged fixing block (2), the rotating connection mechanism (3) and the second hinged fixing block (4) are all made of rigid materials. The first hinged fixing block (2) and the second hinged fixing block (4) are welded to the frame downtube and the frame riser.

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