A shock absorbing structure of an inverted three-wheeled motorcycle

Abstract

The present invention provides a shock absorbing structure of an inverted three-wheeled motorcycle, belonging to the technical field of motorcycles. It solves the problem of poor comfort of existing inverted three-wheeled motorcycles. The shock absorbing structure of the inverted three-wheeled motorcycle comprises a frame, a steering shaft and two rocker arms connected to the front end of the frame, the two rocker arms are located below the steering shaft, and the outer ends of the two rocker arms are connected to the front wheels. The shock absorbing mechanism comprises a shock absorbing seat and two tilting cylinders, the shock absorbing seat sliding sleeve is arranged on the steering shaft, the upper ends of the two shock absorbing cylinders are hinged on the shock absorbing seat, and the lower ends are respectively hinged on the two rocker arms, and a shock absorber capable of axially extending and retracting along the steering shaft is arranged between the shock absorbing seat and the frame, and the shock absorber is located above the shock absorbing seat. The comfort of the inverted three-wheeled motorcycle is better.

Description

Technical Field

[0001] The invention belongs to the technical field of motorcycles and relates to a reverse three-wheeled motorcycle. Background Art

[0002] Three-wheeled motorcycles are relatively common in life. They are used to carry people and goods and are exciting and flexible. A reverse three-wheeled motorcycle refers to a motorcycle with two side-by-side front wheels installed at the front end of the frame and a rear wheel installed at the rear end. The steering axis adjusts the direction by controlling the steering of the two front wheels. During the steering process of the motorcycle, in order to prevent the front wheel on the other side from being lifted off the ground when the vehicle tilts to one side, the two front wheels are hinged to the frame through their own rocker arms, and the outer ends of the rocker arms can swing up and down.

[0003] For example, the inverted three-wheeled motorcycle disclosed in the patent document (application number: 201020114257.7) includes a body, two front wheels, two shock absorber assemblies, a steering mechanism, two lower rocker arms and two steering ball head assemblies I, one end of the two lower rocker arms is respectively connected to the left and right sides of the body, and the other end thereof is respectively connected to the two front wheels through the steering ball head assemblies I, the two shock absorber assemblies are respectively connected between the two lower rocker arms and the body, and it also includes two upper rocker arms and two steering ball head assemblies II, one end of the two upper rocker arms is respectively connected to the left and right sides of the body, and the other end thereof is respectively connected to the two front wheels through the steering ball head assemblies I, One end is connected to the two front wheels respectively through the steering ball head assembly II. The inverted three-wheeled motorcycle is provided with a pair of upper rocker arms and a pair of lower rocker arms. One end of the two shock absorber assemblies is respectively hinged to the two lower rocker arms, and the other end is hinged to the frame. Since the lower rocker arms need to swing when the front wheels are bumpy, the shock absorber assemblies are also tilted. However, since the buffering stroke of the shock absorber assemblies is limited, when the bouncing amplitude of the front wheels or the frame is too large and the shock absorber assemblies are compressed to the limit, their buffering effect disappears. At this time, the vibration will be directly transmitted to the frame, resulting in reduced comfort.

[0004] Since the above-mentioned defects are caused by the shock absorber assembly being compressed to the limit, technical personnel in this field can easily think of preventing the shock absorber assembly from being easily compressed to the limit, that is, increasing the compression resistance of the shock absorber assembly to withstand greater pressure or increasing the length of the shock absorber assembly to increase the buffering stroke. As for the former, increasing the compression resistance of the shock absorber assembly will cause the shock absorption to be too hard, making it difficult to filter smaller vibrations and affecting comfort. As for the latter, since the shock absorber assembly is tilted, it will swing during the bumpy process, and when the frame has a large up and down jump, a vertical force will be generated on the shock absorber assembly. When the vertical force acts on the tilted shock absorber assembly, the vertical component force will cause the expansion and contraction sliding friction of the components in the shock absorber assembly to increase. When the length of the shock absorber assembly is too large, the friction resistance will be amplified, which will easily cause damage to the shock absorber and affect the shock absorption effect. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the existing technology and propose a shock absorbing structure of a reverse three-wheeled motorcycle to solve the problem of poor comfort of the existing reverse three-wheeled motorcycle.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a shock absorbing structure of an inverted three-wheeled motorcycle, the inverted three-wheeled motorcycle comprising a frame, a steering shaft and two rocker arms both connected to the front end of the frame, the two rocker arms being located below the steering shaft, the outer ends of the two rocker arms being connected to front wheels, and characterized in that the shock absorbing structure comprises a shock absorbing seat and two tilting cylinders, the shock absorbing seat sliding sleeve being arranged on the steering shaft, the upper ends of the two tilting cylinders being hinged on the shock absorbing seat, and the lower ends being hinged on the two rocker arms respectively, a shock absorber capable of axially extending and retracting along the steering shaft being arranged between the shock absorbing seat and the frame, and the shock absorber being located above the shock absorbing seat.

[0007] The two front wheels are connected to the frame through two rocker arms, and the frame is supported on the shock absorber seat through the shock absorber, and the shock absorber seat is supported on the two rocker arms through two tilt cylinders. The two rocker arms are supported on the ground through the two front wheels to ensure the stability of the frame. During driving, when there is a unilateral bump that causes one front wheel to bounce, the front wheel can compress the corresponding tilt cylinder through the rocker arm connected thereto, and the tilt cylinder can buffer and filter the bounce of the front wheel and will not transmit it to the front wheel on the other side, and the frame will not experience a large degree of bump. At the same time, the shock absorber seat is a sliding sleeve on the steering shaft. If the unilateral front wheel bounces a large amplitude and causes the corresponding tilt cylinder to be over-compressed, part of the vibration can be transmitted to the shock absorber seat, and then transmitted to the upper shock absorber through the sliding of the shock absorber seat, which is absorbed by the shock absorber to avoid transmission. The shock absorber can absorb the vibration caused by the large vibration of the single-sided front wheel or the double-sided front wheel, thereby improving the comfort of the vehicle.

[0008] In the shock absorbing structure of the above-mentioned inverted three-wheel motorcycle, the two tilting oil cylinders are symmetrically arranged on both sides of the steering axis, the tilting oil cylinders are both tilted, and the distance between the two tilting oil cylinders gradually increases from top to bottom. The two tilting oil cylinders arranged tilted have good supporting capacity and stability. When the two front wheels bounce at the same time, the bounce of the two front wheels can be transmitted to the middle and partially offset, thereby giving full play to the shock absorption and energy absorption capacity of the two tilting oil cylinders as much as possible.

[0009] In the shock absorbing structure of the above-mentioned inverted three-wheel motorcycle, the front end of the frame is connected with a rocker shaft, there is one rocker shaft, and the rocker shaft is arranged along the front-back direction, the two rockers are respectively located on both sides of the rocker shaft, and the inner ends of the two rockers are hinged on the same rocker shaft, the piston rods of the two tilting cylinders are arranged downward, and the piston rods of the two tilting cylinders are respectively hinged at the middle of the length direction of the two rockers. When the frame tilts to one side, the frame only rotates relative to the two rockers, that is, the angle between the frame and one rocker arm becomes smaller, and the angle between the frame and the other rocker arm becomes larger, but the two front wheels will not be dragged inward, that is, the distance between the contact points of the two front wheels and the ground will not change, thereby avoiding rollover when the frame tilts, and having higher safety, and the tilting cylinder hinged in the middle of the rocker arm has better support stability, which improves safety while ensuring comfort.

[0010] In the shock absorbing structure of the above-mentioned inverted three-wheel motorcycle, there are two shock absorbers, each of which includes a shock absorbing oil cylinder and a shock absorbing spring, the cylinder ends of the two shock absorbing oil cylinders are hinged on the frame, the piston rods of the two shock absorbing oil cylinders are arranged downward and hinged on the shock absorbing seat, the two shock absorbing springs are respectively sleeved on the two shock absorbing oil cylinders, and the two ends of the shock absorbing springs are respectively against the frame and the shock absorbing seat. The shock absorbing oil cylinder and the shock absorbing spring can better absorb the vibration transmitted to the shock absorbing seat, thereby improving comfort.

[0011] In the above-mentioned shock-absorbing structure of the inverted three-wheeled motorcycle, the two shock-absorbing oil cylinders are arranged parallel to the steering axis, and the two shock-absorbing oil cylinders are symmetrically arranged on both sides of the steering axis. The two shock-absorbing oil cylinders and the shock-absorbing spring can evenly absorb the vibration on the shock-absorbing seat to ensure comfort, and can increase the service life of the two shock absorbers under the condition of even force.

[0012] In the shock-absorbing structure of the above-mentioned inverted three-wheeled motorcycle, the distance between the upper ends of the two tilting oil cylinders is smaller than the distance between the two shock-absorbing oil cylinders, and the distance between the lower ends of the two tilting oil cylinders is larger than the distance between the two shock-absorbing oil cylinders. This makes the acting forces of the two tilting oil cylinders closer to the middle of the shock-absorbing seat, partially offsetting the acting forces, and the two shock-absorbing oil cylinders are located outside the upper ends of the two tilting oil cylinders, so the supporting stability is better.

[0013] In the shock absorbing structure of the above-mentioned inverted three-wheeled motorcycle, a sliding sleeve is rotatably connected inside the shock absorbing seat, and the sliding sleeve is slidably mounted on the steering shaft, so that the steering shaft can rotate relative to the shock absorbing seat to avoid interference with the steering, and at the same time, the shock absorbing seat can slide relative to the steering shaft through the sliding sleeve, thereby providing shock absorption for the frame and improving comfort.

[0014] In the shock absorbing structure of the inverted three-wheeled motorcycle, the shock absorbing seat has two connecting parts extending to both sides, the piston rod of the shock absorbing oil cylinder is hinged at the outer end of the connecting part, and the cylinder end of the tilting oil cylinder is hinged at the inner end of the connecting part, so as to ensure the structural stability of the shock absorbing seat and keep the shock absorbing seat in lateral balance.

[0015] In the shock absorbing structure of the above-mentioned inverted three-wheeled motorcycle, the connection part has a hinge column extending forward, and the cylinder end of the tilt oil cylinder is fixed with an upper hinge sleeve, which is rotatably sleeved on the hinge column, thereby improving the connection stability between the tilt oil cylinder and the shock absorbing seat.

[0016] In the shock absorbing structure of the above-mentioned inverted three-wheel motorcycle, a lower hinge sleeve is fixed to the end of the piston rod of the tilt oil cylinder, and the lower hinge sleeve is hinged on the rocker arm. A shock absorbing sleeve is also sleeved on the piston rod of the tilt oil cylinder, and the shock absorbing sleeve abuts against the lower hinge sleeve. To ensure the connection stability between the tilt oil cylinder and the rocker arm, the shock absorbing sleeve can abut against the cylinder body when the tilt oil cylinder is over-compressed, thereby limiting the compression of the tilt oil cylinder, and then transmitting excessive vibration to the shock absorber.

[0017] Compared with the prior art, the shock absorbing structure of the inverted three-wheeled motorcycle has the following advantages:

[0018] 1. When a front wheel bounces due to unilateral bumps, the front wheel can compress the corresponding tilt cylinder through the rocker arm connected to it. The tilt cylinder can buffer and filter the bounce of the front wheel and will not be transmitted to the front wheel on the other side, and the frame will not experience a large degree of bumps.

[0019] 2. When the two front wheels bounce greatly due to the large bumps on the ground, the two tilt cylinders can cushion their respective front wheels. At the same time, the shock absorber seat can collect the vibrations on the two tilt cylinders and transmit them to the shock absorber. The shock absorber cushions and filters the vibrations transmitted to the shock absorber seat. That is, the two tilt cylinders and the shock absorber form double shock absorption to improve comfort.

[0020] 3. Since the two rocker arms are connected to the frame through the same rocker arm shaft, when the frame tilts to one side, the frame only rotates relative to the two rocker arms, that is, the angle between the frame and one rocker arm becomes smaller, and the angle between the frame and the other rocker arm becomes larger, but the two front wheels are not dragged inward, that is, the distance between the contact points of the two front wheels and the ground will not change, thereby avoiding rollover when the frame tilts, and providing higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the partial three-dimensional structure of the front part of an inverted three-wheeled motorcycle.

[0022] Figure 2 It is a partial three-dimensional structural diagram of the front part of an inverted three-wheeled motorcycle from another perspective.

[0023] Figure 3 It is a front view of the structure of the front part of an inverted three-wheeled motorcycle.

[0024] Figure 4 It is a structural diagram of the shock absorbing structure.

[0025] In the figure, 1, frame; 11, rocker arm shaft; 12, connecting shaft; 2, steering shaft; 3, rocker arm; 31, connecting seat; 32, long sleeve; 33, short sleeve; 4, front wheel; 5, shock absorber seat; 51, seat body; 52, connecting part; 53, fixing plate; 54, sliding sleeve; 55, articulated column; 6, tilt cylinder; 61, upper articulated sleeve; 62, lower articulated sleeve; 63, shock absorber sleeve; 7, shock absorber; 71, shock absorber cylinder; 711, connecting frame; 72, shock absorber spring. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1 , Figure 2As shown, a shock absorbing structure of an inverted three-wheeled motorcycle, the inverted three-wheeled motorcycle comprises a frame 1, a steering shaft 2, two rocker arms 3 and two front wheels 4, the steering shaft 2 is rotatably connected to the front end of the frame 1, a rocker shaft 11 is connected to the lower part of the front end of the frame 1, there is one rocker shaft 11, and the rocker shaft 11 is arranged along the front-back direction, the rocker shaft 11 is located below the steering shaft 2, the two rocker arms 3 are respectively located on both sides of the rocker shaft 11, a long sleeve 32 is provided at the middle of the inner end edge of one of the rocker arms 3, and the inner end edge of the other rocker arm 3 is provided with a long sleeve 32. There are end sleeves at both ends, the long sleeve 32 and the two short sleeves 33 are rotatably sleeved on the rocker arm shaft 11, and the long sleeve 32 is located between the two short sleeves 33, the two front wheels 4 are rotatably connected to the outer ends of the two rocker arms 3, and the shock absorbing mechanism includes a shock absorbing seat 5 and two tilting cylinders 6. The shock absorbing seat 5 is slidably sleeved on the steering shaft 2. The upper ends of the two shock absorbing cylinders 71 are hinged on the shock absorbing seat 5, and the lower ends are respectively hinged on the two rocker arms 3. A shock absorber 7 is provided between the shock absorbing seat 5 and the frame 1, and the shock absorber 7 is located above the shock absorbing seat 5.

[0028] Specifically, combined Figure 3 , Figure 4 As shown, the shock absorber seat 5 includes a seat body 51, a fixing plate 53 and a sliding sleeve 54. The fixing plate 53 is arc-shaped and fixedly connected to the seat body 51. The sliding sleeve 54 is rotatably connected between the seat body 51 and the fixing plate 53, and the sliding sleeve 54 is slidably sleeved on the direction shaft 2. The seat body 51 has two connecting parts 52 extending to both sides respectively. The outer ends of the two connecting parts 52 are inclined downward. The two tilting cylinders 6 are symmetrically arranged on both sides of the direction shaft 2. The tilting cylinders 6 are inclined, and the distance between the two tilting cylinders 6 gradually increases from top to bottom. The front side of the inner end of the connecting part 52 It has an articulated column 55 extending forward, an upper articulated sleeve 61 is fixed to the end of the cylinder body of the tilt cylinder 6, and the upper articulated sleeve 61 is rotatably sleeved on the articulated column 55. The piston rod of the tilt cylinder 6 is arranged downward, and a lower articulated sleeve 62 is also fixed to the end of the piston rod of the tilt cylinder 6. A connecting seat 31 is provided in the middle of the upper side surface along the length direction of the rocker arm 3, and the lower articulated sleeve 62 is rotatably connected to the connecting seat 31. A shock-absorbing sleeve 63 is also sleeved on the piston rod of the tilt cylinder 6, and the shock-absorbing sleeve 63 is made of rubber material, and the shock-absorbing sleeve 63 abuts against the lower articulated sleeve 62.

[0029] There are two shock absorbers 7, each of which includes a shock absorber cylinder 71 and a shock absorber spring 72. Two connecting shafts 12 extending to both sides are provided on the frame 1. The cylinder ends of the two shock absorber cylinders 71 are hinged on the two connecting shafts 12 respectively. The piston rods of the two shock absorber cylinders 71 are both arranged downward. A U-shaped plate-shaped connecting frame 711 is fixed to the piston rod end of the shock absorber cylinder 71. The two connecting frames 711 are respectively buckled on the outer ends of the two connecting parts 52 and hinged. The two shock absorber springs 72 are respectively sleeved on the two shock absorber cylinders 71, and the upper ends of the shock absorber springs 72 abut against the frame 1, and the lower ends abut against the connecting frame 711. The two shock absorber cylinders 71 are both arranged parallel to the steering axis 2, and the two shock absorber cylinders 71 are symmetrically arranged on both sides of the steering axis 2. The spacing between the upper ends of the two tilting cylinders 6 is smaller than the spacing between the two shock absorber cylinders 71, and the spacing between the lower ends of the two tilting cylinders 6 is larger than the spacing between the two shock absorber cylinders 71.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0031] Although the terms such as frame 1, rocker shaft 11, connecting shaft 12 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A shock absorbing structure for a three-wheeled motorcycle, the three-wheeled motorcycle comprising a frame (1), a steering shaft (2) and two rocker arms (3) both connected to the front end of the frame (1), the two rocker arms (3) being located below the steering shaft (2), and the outer ends of the two rocker arms (3) being connected to front wheels (4), characterized in that: The shock absorbing structure comprises a shock absorbing seat (5) and two tilting oil cylinders (6); the shock absorbing seat (5) is slidably sleeved on the steering shaft (2); the upper ends of the two tilting oil cylinders (6) are hinged on the shock absorbing seat (5), and the lower ends are respectively hinged on the two rocker arms (3); a shock absorber (7) capable of axially extending and retracting along the steering shaft (2) is provided between the shock absorbing seat (5) and the frame (1), and the shock absorber (7) is located above the shock absorbing seat (5); there are two shock absorbers (7), each of which comprises a shock absorbing oil cylinder (71); the cylinder ends of the two shock absorbing oil cylinders (71) are hinged on the frame (1), and the piston rods of the two shock absorbing oil cylinders (71) are arranged downward and hinged on the shock absorbing seat (5).

2. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 1, characterized in that: The two tilting oil cylinders (6) are symmetrically arranged on both sides of the direction axis (2); the tilting oil cylinders (6) are both tilted, and the distance between the two tilting oil cylinders (6) gradually increases from top to bottom.

3. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 2, characterized in that: The front end of the vehicle frame (1) is connected to a rocker shaft (11), the rocker shaft (11) is one, and the rocker shaft (11) is arranged along the front-rear direction, the two rocker arms (3) are respectively located on both sides of the rocker shaft (11), and the inner ends of the two rocker arms (3) are hinged on the same rocker shaft (11), the piston rods of the two tilting oil cylinders (6) are arranged downward, and the piston rods of the two tilting oil cylinders (6) are respectively hinged at the middle of the length direction of the two rocker arms (3).

4. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 1, 2 or 3, characterized in that: Each shock absorber (7) comprises a shock absorbing spring (72). The two shock absorbing springs (72) are respectively sleeved on two shock absorbing oil cylinders (71), and the two ends of the shock absorbing spring (72) are respectively against the vehicle frame (1) and the shock absorbing seat (5).

5. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 4, characterized in that: The two shock-absorbing oil cylinders (71) are both arranged parallel to the direction axis (2), and the two shock-absorbing oil cylinders (71) are symmetrically arranged on both sides of the direction axis (2).

6. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 5, characterized in that: The distance between the upper ends of the two tilting oil cylinders (6) is smaller than the distance between the two damping oil cylinders (71), and the distance between the lower ends of the two tilting oil cylinders (6) is larger than the distance between the two damping oil cylinders (71).

7. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 4, characterized in that: A sliding sleeve (54) is rotatably connected inside the shock-absorbing seat (5), and the sliding sleeve (54) is slidably mounted on the direction shaft (2).

8. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 7, characterized in that: The shock-absorbing seat (5) has two connecting parts (52) extending to both sides respectively, the piston rod of the shock-absorbing oil cylinder (71) is hinged to the outer end of the connecting part (52), and the cylinder end of the tilting oil cylinder (6) is hinged to the inner end of the connecting part (52).

9. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 8, characterized in that: The connecting portion (52) is provided with a hinge column (55) extending forward, and an upper hinge sleeve (61) is fixed to the cylinder end of the tilting oil cylinder (6), and the upper hinge sleeve (61) is rotatably sleeved on the hinge column (55).

10. The shock absorbing structure of the inverted three-wheeled motorcycle according to claim 9, characterized in that: A lower hinge sleeve (62) is also fixed to the end of the piston rod of the tilt oil cylinder (6), and the lower hinge sleeve (62) is hinged to the rocker arm (3). A shock absorbing sleeve (63) is also sleeved on the piston rod of the tilt oil cylinder (6), and the shock absorbing sleeve (63) abuts against the lower hinge sleeve (62).

Images