Damping rear fork and scooter

Abstract

The invention discloses a damping rear fork and a scooter. The rear fork assembly comprises a rear fork assembly and a shock absorption assembly, the shock absorption assembly comprises a shock absorption seat, a first special-shaped hole penetrating through the shock absorption seat in the left-right direction is formed in the shock absorption seat, a rotating shaft is rotationally connected to the shock absorption seat, and the rotating shaft is located above the first special-shaped hole and arranged in the left-right direction; a push rod capable of moving in the first special-shaped hole and an elastic damping structure located on the rear side of the push rod are arranged in the first special-shaped hole, the push rod is parallel to the rotating shaft, and the rotating shaft and the push rod are connected with the rear fork assembly. The damping assembly is simple in structure, low in cost and good in damping effect, the elastic damping structure is convenient to replace, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorption of riding tools, and in particular to a shock absorption rear fork and a scooter. Background Art

[0002] With the development of science and technology, people's means of travel are becoming more and more diverse. Scooters are deeply loved by consumers because of their advantages such as fast folding speed, small size, easy to carry, and the ability to travel on crowded roads.

[0003] Scooters are prone to bumps when passing through uneven roads, which affects safe driving and comfort, so more and more scooters have added shock-absorbing structures. However, the shock-absorbing structure on the rear fork of the scooter currently uses shock-absorbing springs to achieve shock absorption, which is often complex in structure, high in cost, and cannot be disassembled. After driving on roads with poor road conditions for a long time, the shock-absorbing structure decays seriously, and the shock-absorbing structure is not easy to replace, which greatly affects the consumer experience. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a shock-absorbing rear fork and a scooter, wherein the shock-absorbing assembly has a simple structure, low cost, good shock-absorbing effect, and convenient replacement of the elastic shock-absorbing structure, thereby greatly reducing maintenance costs.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A shock-absorbing rear fork of the present invention comprises a rear fork assembly and a shock-absorbing assembly, wherein the shock-absorbing assembly comprises a shock-absorbing seat, wherein the shock-absorbing seat is provided with a first special-shaped hole penetrating the shock-absorbing seat in the left-right direction, wherein a rotating shaft is rotatably connected to the shock-absorbing seat, wherein the rotating shaft is located above the first special-shaped hole and is arranged in the left-right direction, wherein a push rod movable in the first special-shaped hole and an elastic shock-absorbing structure located at the rear side of the push rod are provided in the first special-shaped hole, wherein the push rod and the rotating shaft are parallel to each other, and wherein the rotating shaft and the push rod are respectively connected to the rear fork assembly.

[0007] In this solution, the shock-absorbing assembly is installed at the rear end of the scooter frame, and the rear wheel is installed on the rear fork assembly. When the scooter passes through an uneven road section, the impact force on the rear wheel will drive the rear fork assembly to rotate backward, and the rear fork assembly will drive the push rod to rotate backward around the rotating axis. The push rod rotates backward in the first special-shaped hole to squeeze the elastic shock-absorbing structure to generate elastic potential energy, thereby playing a shock-absorbing role, and the shock-absorbing effect is good.

[0008] Preferably, the elastic shock-absorbing structure includes a plurality of shock-absorbing rods.

[0009] Preferably, the distance between the central axis of the shock absorbing rod and the central axis of the rotating shaft is equal to the distance between the central axis of the push rod and the central axis of the rotating shaft.

[0010] When the rear fork assembly drives the push rod to rotate backward around the rotating axis, the rotation path of the push rod will pass through the central axis of the shock absorber rod, that is, the extrusion force applied by the push rod to the shock absorber rod is along the radial direction of the shock absorber rod, fully utilizing the elasticity of the shock absorber rod and achieving a good shock absorption effect.

[0011] Preferably, the elastic shock-absorbing structure includes two shock-absorbing rods, and the first special-shaped hole is surrounded by an upper arc-shaped surface arched downward, a left arc-shaped surface arched to the left, a lower arc-shaped surface arched downward, and a right arc-shaped surface arched to the right. The longitudinal section of the right arc-shaped surface is semicircular, and the diameter of the semicircle is equal to the diameter of the shock-absorbing rod. The longitudinal section of the left arc-shaped surface is fan-shaped, and the radius of the fan is equal to the radius of the push rod. The left side of the push rod contacts the left arc-shaped surface, the right side of the push rod contacts the left side of the front shock-absorbing rod, the right side of the front shock-absorbing rod contacts the left side of the rear shock-absorbing rod, and the right side of the rear shock-absorbing rod contacts the right arc-shaped surface.

[0012] The first special-shaped hole tightly wraps and positions the two shock-absorbing rods, thereby ensuring the shock-absorbing effect and facilitating replacement of the shock-absorbing rods.

[0013] Preferably, the shock absorbing rod is interference fit with the first special-shaped hole.

[0014] Preferably, the shock absorbing rod comprises a cylinder made of elastic material, and the cylinder is provided with a through hole penetrating the cylinder along the axis.

[0015] Preferably, the rear fork assembly includes a connecting seat and two rear fork arms, the two rear fork arms are symmetrically arranged on the left and right, the left and right ends of the connecting seat are respectively connected to the top ends of the front sides of the two rear fork arms, the two ends of the rotating shaft are respectively detachably connected to the rear fork arms on the corresponding side, and the two ends of the push rod are respectively detachably connected to the rear fork arms on the corresponding side.

[0016] The rear fork arm is detachably connected to the rotating shaft and the push rod respectively. After the rear fork assembly is disassembled from the shock absorber assembly, the rotating shaft, the push rod and the shock absorber rod on the shock absorber assembly are easy to replace, which is beneficial to the replacement and maintenance of the parts of the shock absorber assembly after long-term use.

[0017] Preferably, the shock absorber seat is provided with a shaft hole for the shaft to pass through, the shaft passes through the shaft hole, a first through hole is provided on the rear fork arm at a position corresponding to the shaft, a second through hole is provided on the rear fork arm at a position corresponding to the push rod, first threaded holes are symmetrically provided at the left and right ends of the shaft, the first threaded hole is coaxial with the shaft, second threaded holes are symmetrically provided at the left and right ends of the push rod, the second threaded hole is coaxial with the push rod, a first screw is provided on the first through hole, the first screw passes through the first through hole and is threadedly connected with the corresponding first threaded hole to lock the rear fork arm and the shaft, a second screw is provided on the second through hole, the second screw passes through the second through hole and is threadedly connected with the corresponding second threaded hole to lock the rear fork arm and the push rod.

[0018] Preferably, the shock absorber seat is also provided with a second special-shaped hole that passes through the shock absorber seat in the left-right direction, the second special-shaped hole is located above the first special-shaped hole, the rear fork arm is provided with a first wire hole, and the front side of the inner wall of the second special-shaped hole is provided with a plurality of second wire holes that pass through the shock absorber seat.

[0019] The rear brake line of the scooter can pass through the second line passing hole, the second special-shaped hole and the first line passing hole from the rear end of the frame of the scooter in sequence and then be connected with the brake mechanism on the rear wheel.

[0020] Preferably, the shock absorbing rod is made of polyurethane material, which has the characteristics of high elasticity, wear resistance and fatigue resistance.

[0021] A scooter of the present invention comprises the above-mentioned shock-absorbing rear fork.

[0022] The beneficial effects of the present invention are as follows: (1) The shock-absorbing assembly has a simple structure, low cost and good shock-absorbing effect. (2) The rear fork arm is detachably connected to the rotating shaft and the push rod. After the rear fork assembly is disassembled from the shock-absorbing assembly, the rotating shaft, the push rod and the shock-absorbing rod on the shock-absorbing assembly are easy to replace, which is conducive to the replacement and maintenance of the components of the shock-absorbing assembly after long-term use. (3) The shock-absorbing rod made of polyurethane material is used as the shock-absorbing component, which has good shock-absorbing effect, low cost and convenient replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure in which the shock-absorbing rear fork is installed on the scooter;

[0024] Figure 2 yes Figure 1 Exploded diagram of

[0025] Figure 3 yes Figure 1 A cross-sectional view of the middle shock absorber assembly;

[0026] Figure 4 yes Figure 2 Side view at the center shock mount;

[0027] Figure 5 It is a structural schematic diagram of the shock absorbing assembly;

[0028] Figure 6 It is a schematic diagram of the rear wheel of the scooter encountering a bump on the road;

[0029] Figure 7 This is a diagram of the rear brake cable passing through the shock absorber rear fork.

[0030] In the figure: 1, rear fork assembly, 2, shock absorber assembly, 3, shock absorber seat, 4, first special-shaped hole, 5, rotating shaft, 6, push rod, 7, shock absorber rod, 8, upper arc surface, 9, left arc surface, 10, lower arc surface, 11, right arc surface, 12, cylinder, 13, through hole, 14, connecting seat, 15, rear fork arm, 16, rotating shaft hole, 17, first through hole, 18, second through hole, 19, first threaded hole, 20, second threaded hole, 21, first screw, 22, second screw, 23, second special-shaped hole, 24, first wire hole, 25, second wire hole, 26, frame, 27, rear wheel, 28, protrusion, 29, rear brake line. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0032] Embodiment: A shock-absorbing rear fork of this embodiment, such as Figures 1 to 7 As shown, it includes a rear fork assembly 1 and a shock absorbing assembly 2, the shock absorbing assembly 2 includes a shock absorbing seat 3, the shock absorbing seat 3 is provided with a first special-shaped hole 4 that penetrates the shock absorbing seat 3 along the left-right direction, the shock absorbing seat 3 is rotatably connected with a rotating shaft 5, the rotating shaft 5 is located above the first special-shaped hole 4 and is arranged along the left-right direction, the first special-shaped hole 4 is provided with a push rod 6 that can move in the first special-shaped hole 4 and an elastic shock absorbing structure located at the rear side of the push rod 6, the push rod 6 and the rotating shaft 5 are parallel to each other, and the rotating shaft 5 and the push rod 6 are respectively detachably connected to the rear fork assembly 1.

[0033] The elastic shock absorbing structure comprises two shock absorbing rods 7 , and the distance between the central axis of the shock absorbing rod 7 and the central axis of the rotating shaft 5 is equal to the distance between the central axis of the push rod 6 and the central axis of the rotating shaft 5 .

[0034] The first special-shaped hole 4 is surrounded by an upper arc surface 8 arched downward, a left arc surface 9 arched leftward, a lower arc surface 10 arched downward, and a right arc surface 11 arched rightward. The longitudinal section of the right arc surface 11 is semicircular, and the diameter of the semicircle is equal to the diameter of the shock-absorbing rod 7. The longitudinal section of the left arc surface 11 is fan-shaped, and the radius of the fan is equal to the radius of the push rod 6. The left side of the push rod 6 contacts the left arc surface 9, the right side of the push rod 6 contacts the left side of the front shock-absorbing rod 7, the right side of the front shock-absorbing rod 7 contacts the left side of the rear shock-absorbing rod 7, and the right side of the rear shock-absorbing rod 7 contacts the right arc surface 11. The shock-absorbing rod 7 is interference-fitted with the first special-shaped hole 4. The first special-shaped hole tightly wraps and positions the two shock-absorbing rods, ensuring the shock-absorbing effect and facilitating the replacement of the shock-absorbing rods.

[0035] The shock absorbing rod 7 comprises a cylinder 12 made of polyurethane material, and a through hole 13 is provided on the cylinder 12 and passes through the cylinder 12 along the axis, so that the shock absorbing rod has the characteristics of high elasticity, wear resistance and fatigue resistance.

[0036] The shock absorber seat 3 is provided with a shaft hole 16 for the shaft 5 to pass through, the shaft 5 passes through the shaft hole 16, and both ends of the shaft 5 extend out of the shaft hole 16. The rear fork assembly 1 includes a connecting seat 14 and two rear fork arms 15, the two rear fork arms 15 are symmetrically arranged, the left and right ends of the connecting seat 14 are respectively connected to the front top ends of the two rear fork arms 15, a first through hole 17 is provided on the rear fork arm 15 at a position corresponding to the shaft 5, a second through hole 18 is provided on the rear fork arm 15 at a position corresponding to the push rod 6, and the left and right ends of the shaft 5 are symmetrically provided with first threaded holes 19, the first threaded hole 19 is coaxial with the rotating shaft 5, and the left and right ends of the push rod 6 are symmetrically provided with second threaded holes 20, and the second threaded hole 20 is coaxial with the push rod 6. The first through hole 17 is provided with a first screw 21, and the first screw 21 passes through the first through hole 17 and is threadedly connected with the corresponding first threaded hole 19 to lock the rear fork arm 15 and the rotating shaft 5. The second through hole 18 is provided with a second screw 22, and the second screw 22 passes through the second through hole 18 and is threadedly connected with the corresponding second threaded hole 20 to lock the rear fork arm 15 and the push rod 6.

[0037] In this scheme, if Figure 1 As shown, the shock absorbing assembly is installed at the rear end of the frame 26 of the scooter, the rear wheel 27 is installed on the rear fork assembly 1, and the shock absorbing assembly is detachably connected to the frame. Figure 6 As shown, when the rear wheel of the scooter encounters a protrusion 28 on the road surface, the impact force received by the rear wheel will drive the rear fork assembly to rotate backward, and the rear fork assembly will drive the push rod to rotate backward around the rotating axis. The push rod rotates backward in the first special-shaped hole to squeeze the shock-absorbing rod to generate elastic potential energy, thereby playing a shock-absorbing role, and the shock-absorbing effect is good.

[0038] Since the distance between the central axis of the shock absorber rod and the central axis of the rotating shaft is equal to the distance between the central axis of the push rod and the central axis of the rotating shaft, when the rear fork assembly drives the push rod to rotate backward around the rotating shaft, the rotation path of the push rod will pass through the central axis of the shock absorber rod, that is, the extrusion force exerted by the push rod on the shock absorber rod is along the radial direction of the shock absorber rod, which makes full use of the elasticity of the shock absorber rod and improves the shock absorption effect.

[0039] The two ends of the rotating shaft are detachably connected to the rear fork arm on the corresponding side, and the two ends of the push rod are detachably connected to the rear fork arm on the corresponding side. After the rear fork assembly is disassembled from the shock absorber assembly, the rotating shaft, push rod and shock absorber rod on the shock absorber assembly are easy to replace, which is conducive to the replacement and maintenance of the parts of the shock absorber assembly after long-term use.

[0040] The shock absorbing assembly of the present invention has a simple structure, the shock absorbing rod made of polyurethane material is low in cost, the shock absorbing rod and the rear fork assembly are easy to disassemble and assemble, and when the shock absorbing rod is severely attenuated due to long-term use, resulting in poor shock absorbing effect, it is only necessary to remove the rear fork assembly from the shock absorbing assembly and replace the shock absorbing rod, which is low in cost and highly cost-effective.

[0041] The shock absorber seat 3 is also provided with a second special-shaped hole 23 that penetrates the shock absorber seat 3 in the left-right direction. The second special-shaped hole 23 is located above the first special-shaped hole 4. The rear fork arm 15 is provided with a first wire hole 24. The front side of the inner wall of the second special-shaped hole 23 is provided with a plurality of second wire holes 25 that penetrate the shock absorber seat 3.

[0042] like Figure 7 As shown, the rear brake line 29 of the scooter can pass through the second line hole 25, the second special-shaped hole 23, and the first line hole 24 from the rear end of the scooter frame 26 to be connected to the brake mechanism on the rear wheel 27.

[0043] A scooter of this embodiment includes a frame, a front fork assembly, a front wheel, a rear wheel and the above-mentioned shock-absorbing rear fork, wherein the front wheel is connected to the front end of the frame through the front fork assembly, and the rear wheel is connected to the rear end of the frame through the shock-absorbing rear fork. The shock-absorbing assembly is arranged at the rear end of the frame and is detachably connected to the frame, and the rear wheel is arranged between two rear fork arms.

Claims

1. A shock-absorbing rear fork, comprising a rear fork assembly (1) and a shock-absorbing assembly (2), characterized in that: The shock absorbing assembly (2) comprises a shock absorbing seat (3), the shock absorbing seat (3) is provided with a first special-shaped hole (4) penetrating the shock absorbing seat (3) in the left-right direction, the shock absorbing seat (3) is rotatably connected with a rotating shaft (5), the rotating shaft (5) is located above the first special-shaped hole (4) and is arranged in the left-right direction, the first special-shaped hole (4) is provided with a push rod (6) movable in the first special-shaped hole (4) and an elastic shock absorbing structure located at the rear side of the push rod (6), the push rod (6) and the rotating shaft (5) are parallel to each other, and the rotating shaft (5) and the push rod (6) are respectively connected to the rear fork assembly (1).

2. A shock-absorbing rear fork according to claim 1, characterized in that: The elastic shock-absorbing structure comprises a plurality of shock-absorbing rods (7).

3. A shock absorbing rear fork according to claim 2, characterized in that: The distance between the central axis of the shock absorbing rod (7) and the central axis of the rotating shaft (5) is equal to the distance between the central axis of the push rod (6) and the central axis of the rotating shaft (5).

4. A shock absorbing rear fork according to claim 2, characterized in that: The elastic shock absorbing structure comprises two shock absorbing rods (7); the first special-shaped hole (4) is surrounded by an upper arc surface (8) arched downward, a left arc surface (9) arched leftward, a lower arc surface (10) arched downward, and a right arc surface (11) arched rightward; the longitudinal section of the right arc surface (11) is semicircular, and the diameter of the semicircle is equal to the diameter of the shock absorbing rod; the longitudinal section of the left arc surface (9) is fan-shaped, and the radius of the fan is equal to the radius of the push rod; the left side of the push rod (6) contacts with the left arc surface (9), the right side of the push rod (6) contacts with the left side of the front shock absorbing rod (7), the right side of the front shock absorbing rod (7) contacts with the left side of the rear shock absorbing rod (7), and the right side of the rear shock absorbing rod (7) contacts with the right arc surface (11).

5. A shock absorbing rear fork according to claim 2, characterized in that: The shock absorbing rod (7) is interference fit with the first special-shaped hole (4).

6. A shock absorbing rear fork according to claim 2, characterized in that: The shock absorbing rod (7) comprises a cylinder (12) made of elastic material, and the cylinder (12) is provided with a through hole (13) penetrating the cylinder (12) along an axis.

7. The shock absorbing rear fork according to claim 1, characterized in that: The rear fork assembly (1) comprises a connecting seat (14) and two rear fork arms (15), wherein the two rear fork arms (15) are symmetrically arranged on the left and right sides, the left and right ends of the connecting seat (14) are respectively connected to the front top ends of the two rear fork arms (15), the two ends of the rotating shaft (5) are respectively detachably connected to the rear fork arms (15) on the corresponding side, and the two ends of the push rod (6) are respectively detachably connected to the rear fork arms (15) on the corresponding side.

8. A shock absorbing rear fork according to claim 7, characterized in that: The shock absorber seat (3) is provided with a shaft hole (16) for the shaft (5) to pass through, the shaft (5) passes through the shaft hole (16), the rear fork arm (15) is provided with a first through hole (17) at a position corresponding to the shaft (5), the rear fork arm (15) is provided with a second through hole (18) at a position corresponding to the push rod (6), the shaft (5) is symmetrically provided with first threaded holes (19) at both ends, the first threaded holes (19) are coaxial with the shaft (5), and the push rod (6) is symmetrically provided with second threaded holes (20) at both ends. ), the second threaded hole (20) is coaxial with the push rod (6), the first through hole (17) is provided with a first screw (21), the first screw (21) passes through the first through hole (17) and is threadedly connected with the corresponding first threaded hole (19) to lock the rear fork arm (15) and the rotating shaft (5), the second through hole (18) is provided with a second screw (22), the second screw (22) passes through the second through hole (18) and is threadedly connected with the corresponding second threaded hole (20) to lock the rear fork arm (15) and the push rod (6).

9. The shock absorbing rear fork according to claim 7, characterized in that: The shock absorber seat (3) is also provided with a second special-shaped hole (23) penetrating the shock absorber seat (3) in the left-right direction, the second special-shaped hole (23) is located above the first special-shaped hole (4), the rear fork arm (15) is provided with a first wire-passing hole (24), and the front side of the inner wall of the second special-shaped hole (23) is provided with a plurality of second wire-passing holes (25) penetrating the shock absorber seat (3).

10. A scooter, characterized in that: The invention comprises the shock absorbing rear fork as claimed in any one of claims 1 to 9.

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