A side parallelogram linkage mechanism of a reverse tricycle

Abstract

The present invention relates to the technical field of inverted tricycles, and discloses a side parallelogram linkage mechanism of an inverted tricycle, comprising a head tube, wherein both sides of the head tube are respectively provided with rocker arm linkage mechanisms that can adaptively swing according to the change of the height position of the wheels; the rocker arm linkage mechanism comprises an upper rocker arm, a lower rocker arm, a side rod and an upper swing arm, the two upper rockers, the lower rocker arms and the side rods are respectively located on both sides of the head tube, the two upper rockers and the lower rocker arms are respectively rotatably connected to the frame at one end away from the head tube, the two upper rockers and the lower rocker arms are rotatably connected to the side rods at one end close to the head tube, the upper swing arm and the two upper rockers are hinged to the end close to the head tube through a ball head pull rod, and the lower ends of the two side rods are fixedly installed with front fork shock absorbers; the side parallelogram linkage mechanism of an inverted tricycle provided by the present invention solves the problem that when the left and right side rods move up and down, the distance between the two wheels becomes smaller, thereby affecting driving safety and operational sensitivity.

Description

Technical field:

[0002] The invention belongs to the technical field of inverted tricycles, and particularly relates to a side parallelogram linkage mechanism of an inverted tricycle. Background technology:

[0004] As reverse tricycles become more and more common in people's daily lives, their safety, comfort and agility have also attracted much attention. When existing reverse tricycles pass through rough roads, the rider needs to control the handlebars and tilt the body to avoid obstacles. At this time, the distance between the front two wheels will become smaller, affecting the rider's safety and operational sensitivity, and also causing a bad rider experience.

[0005] Therefore, it is necessary to propose further solutions to the problems raised above. Summary of the invention:

[0007] The purpose of the present invention is to provide a side parallelogram linkage mechanism of a reverse tricycle to solve the problems existing in the prior art.

[0008] The present invention is achieved through the following technical solutions:

[0009] A side parallelogram linkage mechanism of an inverted tricycle includes a head tube, and rocker arm linkage mechanisms are respectively provided on both sides of the head tube, which can adaptively swing according to the change of the height position of the wheel; the rocker arm linkage mechanism includes an upper rocker arm, a lower rocker arm, a side rod and an upper swing arm, and the two upper rockers, the lower rocker arms and the side rods are respectively located on both sides of the head tube, the two upper rockers and the lower rocker arms are respectively rotatably connected to the frame at one end away from the head tube, and the two upper rockers and the lower rocker arms are rotatably connected to the side rods at one end close to the head tube, the upper swing arm and the two upper rockers are hinged at the end close to the head tube through a ball head pull rod, and the lower ends of the two side rods are fixedly installed with front fork shock absorbers.

[0010] Preferably, the two upper rocker arms are rotatably connected to the first stepped shaft on the frame at one end away from the head tube, the two lower rocker arms are rotatably connected to the second stepped shaft on the frame at one end away from the head tube, the two upper rocker arms are rotatably connected to the first bent sheet metal on the side rod at one end close to the head tube, and the two lower rocker arms are rotatably connected to the second bent sheet metal on the side rod at one end close to the head tube.

[0011] Preferably, the middle part of the upper rocker arm is rotatably hinged to the frame, and a sheet metal is provided on the outer side of the upper rocker arm and the lower rocker arm on both sides away from the head tube, and a bolt passes through the sheet metal and is locked to the first stepped shaft and the second stepped shaft respectively.

[0012] Preferably, it also includes a lower rocker arm mechanism, which includes an integrated suspension bridge, an upper profile, a lower profile, a first connecting rod, and a second connecting rod. The two upper profiles, the lower profile, the first connecting rod, and the second connecting rod are respectively located on both sides of the integrated suspension bridge.

[0013] Preferably, the ends of the two upper profiles away from the head pipe are both rotatably connected to the upper end of the integrated suspension bridge, and the ends of the two lower profiles away from the head pipe are both rotatably connected to the lower end of the integrated suspension bridge.

[0014] Preferably, the upper profile and the lower profile close to one end of the head tube are hinged to the upper and lower ends of the first connecting rod.

[0015] Preferably, one end of the second connecting rod close to the upper profile and the lower profile is rotatably connected to the first connecting rod, and the other end is rotatably connected to the front fork shock absorber.

[0016] Preferably, when the front fork shock absorber moves up and down, since there is only a vertical direction, the distance between the two wheels always remains unchanged.

[0017] Preferably, a handle is provided at the upper end of the head tube, and a wheel is mounted on the front fork shock absorber.

[0018] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0019] The front fork's suspension only exists in the vertical direction when it moves up and down, ensuring that the distance between the two wheels remains constant. This increases rider safety and operational sensitivity, while also enhancing the rider's experience. Description of the drawings:

[0021] In order to further understand the structure, features and other purposes of the present invention, the accompanying drawings are described as follows:

[0022] Figure 1 A structural diagram of the present invention from the first perspective

[0023] Figure 2 A structural diagram of the second viewing angle of the present invention

[0024] Figure 3 A partial perspective view of the present invention

[0025] Figure 4 A three-dimensional diagram of the lower rocker arm mechanism of the present invention Specific implementation method:

[0027] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-4 :

[0028] The present invention provides a side parallelogram linkage mechanism of an inverted tricycle, comprising a head tube 1, wherein both sides of the head tube 1 are respectively provided with rocker arm linkage mechanisms that can adaptively swing according to the height position change of the wheel 11; the rocker arm linkage mechanism comprises an upper rocker arm 2, a lower rocker arm 3, a side rod 4 and an upper rocker arm 5, the two upper rocker arms 2, the lower rocker arm 3 and the side rod 4 are respectively located on both sides of the head tube 1, the two upper rocker arms 2 and the lower rocker arm 3 are respectively rotatably connected to the frame 6 at one end away from the head tube 1, the two upper rocker arms 2 and the lower rocker arms 3 are rotatably connected to the side rod 4 at one end close to the head tube 1, the upper rocker arm 5 and the two upper rocker arms 2 are hinged to the end close to the head tube 1 through a ball head pull rod 7, and the lower ends of the two side rods 4 are fixedly installed with a front fork shock absorber 8.

[0029] Since both sides of the head tube 1 are provided with rocker arm linkage mechanisms that can adaptively swing according to the change in the height position of the wheel; during riding, the side rod 4, the upper rocker arm 2, the lower rocker arm 3 and the side rod 4 form a four-bar linkage. When the vehicle passes through a rough road, the upper rocker arm 2 and the lower rocker arm 3 can respectively swing around the first stepped axis 22 and the second stepped axis 23. When viewed from the left side, when the left wheel 9 encounters a bump on the ground, the side rod 4 will move up with the left wheel 9, and the corresponding upper rocker arm 2 and lower rocker arm 3 will deflect counterclockwise. At this time, when viewed from the front, the upper rocker arm 2 drives the ball head pull rod 7 to move upward, and the ball head pull rod 7 drives When the upper swing arm 5 deflects counterclockwise, the corresponding right wheel 10 will be driven downward, thus forming a lateral parallelogram linkage mechanism. Therefore, the steering column 12 will not be lifted due to the upward movement of the wheel 11. Conversely, when the left wheel 9 encounters a depression in the ground, the side rod 4 will move downward with the left wheel 9, and the corresponding upper rocker arm 2 and lower rocker arm 3 will deflect clockwise. At this time, when viewed from the front, the upper rocker arm 2 drives the ball head tie rod 7 to move downward, and the ball head tie rod 7 drives the upper rocker arm 2 to deflect clockwise, which will drive the corresponding right wheel 10 upward. Therefore, the steering column 12 will not move downward as a whole due to the downward movement of the wheel 11. Therefore, the setting of the lateral parallelogram linkage mechanism in this technical solution solves the problem that the driver's hands will be shaken due to rugged terrain, affecting the rider's operational sensitivity and causing a poor rider experience.

[0030] This design uses a lateral parallelogram linkage mechanism. Even when the driver is driving on a rough road, the handle 18 mounted on the steering column 12 remains in a horizontal position and is not affected by the up and down fluctuations of the wheel 11, thereby creating a comfortable driving environment.

[0031] Preferably, the two upper rocker arms 2 are rotatably connected to the first stepped shaft 22 on the frame 6 at one end away from the head tube 1, the two lower rocker arms 3 are rotatably connected to the second stepped shaft 23 on the frame 6 at one end away from the head tube 1, the two upper rocker arms 2 are rotatably connected to the first bent sheet metal 20 on the side rod 4 at one end close to the head tube 1, and the two lower rocker arms 3 are rotatably connected to the second bent sheet metal 21 on the side rod 4 at one end close to the head tube 1, so that a more stable rotation effect can be achieved.

[0032] Preferably, the middle part of the upper rocker arm 5 is rotatably hinged to the frame 6, and a sheet metal 13 is provided on the outer side of the upper rocker arm 2 and the lower rocker arm 3 on both sides away from the head tube 1, and a bolt 19 passes through the sheet metal 13 and is locked to the first stepped shaft 22 and the second stepped shaft 23 respectively, so that the mechanism can be more stable and durable.

[0033] Preferably, it also includes a lower rocker arm mechanism, which includes an integrated suspension bridge 14, an upper profile 15, a lower profile 16, a first connecting rod 24, and a second connecting rod 17. The two upper profiles 15, the lower profile 16, the first connecting rod 24, and the second connecting rod 17 are respectively located on both sides of the integrated suspension bridge 14, so as to ensure that the mechanism also has a steering function.

[0034] Preferably, the two upper profiles 15 are rotatably connected to the upper end of the integrated suspension bridge 14 at one end away from the head tube 1, and the two lower profiles 15 are rotatably connected to the lower end of the integrated suspension bridge 14 at one end away from the head tube 1. This ensures that the driver can use minimal force when controlling the steering of the handlebar 18.

[0035] Preferably, the upper profile 15 and the lower profile 16 near one end of the head pipe 1 are hinged to the upper and lower ends of the first connecting rod 24 , so that the upper profile 15 and the lower profile 16 can be linked through the first connecting rod 24 .

[0036] Preferably, one end of the second connecting rod 17 close to the upper profile 15 and the lower profile 16 is rotatably connected to the first connecting rod 24, and the other end is rotatably connected to the front fork shock absorber 8, so that the front fork shock absorber 8 can be rotatably connected to the first connecting rod 24 through the second connecting rod 17.

[0037] Preferably, when the front fork shock absorber 8 moves up and down, since there is only a vertical direction, the distance between the two wheels 11 always remains unchanged, which can ensure the safety and operability of the rider.

[0038] Preferably, a handle 18 is provided at the upper end of the head tube 1 , and a wheel 11 is mounted on the front fork shock absorber 8 .

[0039] In summary, in this technical solution, when the inverted tricycle is traveling on an uneven surface, the side parallelogram linkage mechanism can keep the driver and the handle 18 in the same plane. For example, when the driver is traveling on the road, the left front wheel 9 encounters an obstacle, and the left wheel 9 is subjected to an upward force, causing the left rod 4 to generate an upward force. The left upper rocker arm 2 and the lower rocker arm 3 move upward under the drive of the left rod 4, thereby driving the ball head pull rod 7 to move upward. At this time, viewed from the front, the ball head pull rod 7 drives the upper rocker arm 5 to deflect counterclockwise, and the corresponding right wheel 10 will be driven to move downward, thus forming a side parallelogram linkage mechanism. However, the steering column 12 is not affected and always maintains a left-right balanced state with the handle 18, thereby reducing the bumps of the driver when passing through the rugged road, while improving the driver's operating sensitivity and enhancing the safety during driving.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the system, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A side parallelogram linkage mechanism of an inverted tricycle, comprising a head tube, with rocker arm linkage mechanisms being respectively provided on both sides of the head tube and capable of adaptively swinging in response to changes in the height position of the wheels; the rocker arm linkage mechanism comprising an upper rocker arm, a lower rocker arm, a side rod and an upper rocker arm, wherein the two upper rockers, the two lower rockers and the two side rods are respectively located on both sides of the head tube, the two upper rockers and the two lower rockers being rotatably connected to the frame at one end away from the head tube, and the two upper rockers and the two lower rockers being rotatably connected to the side rods at one end close to the head tube. The upper swing arm and the two upper rocker arms are hinged near one end of the head tube through a ball head pull rod, and the lower ends of the two side rods are fixedly installed with front fork shock absorbers, and also include a lower rocker arm mechanism, the lower rocker arm mechanism includes an integrated suspension bridge, an upper profile, a lower profile, a first connecting rod, and a second connecting rod, the two upper profiles, the two lower profiles, the two first connecting rods, and the two second connecting rods are respectively located on both sides of the integrated suspension bridge, the two upper profiles are rotatably connected to the upper end of the integrated suspension bridge at one end away from the head tube, and the two lower profiles are rotatably connected to the lower end of the integrated suspension bridge at one end away from the head tube.

2. The lateral parallelogram linkage mechanism of a reverse tricycle according to claim 1, characterized in that: The two upper rocker arms are rotatably connected to the first stepped shaft on the frame at one end away from the head tube, the two lower rocker arms are rotatably connected to the second stepped shaft on the frame at one end away from the head tube, the two upper rocker arms are rotatably connected to the first bent sheet metal on the side rod at one end close to the head tube, and the two lower rocker arms are rotatably connected to the second bent sheet metal on the side rod at one end close to the head tube.

3. The lateral parallelogram linkage mechanism of a reverse tricycle according to claim 2, characterized in that: The middle part of the upper swing arm is rotatably hinged with the frame, and a sheet metal is respectively provided on the outer side of the upper and lower swing arms away from the head pipe. Bolts pass through the sheet metals on both sides and lock them to the two ends of the first stepped shaft and the second stepped shaft respectively.

4. The lateral parallelogram linkage mechanism of a reverse tricycle according to claim 1, characterized in that: The upper profile and the lower profile close to one end of the head pipe are hinged to the upper end and the lower end of the first connecting rod.

5. The lateral parallelogram linkage mechanism of a reverse tricycle according to claim 1, characterized in that: One end of the second connecting rod close to the upper profile and the lower profile is rotatably connected to the first connecting rod, and the other end is rotatably connected to the front fork shock absorber.

6. The lateral parallelogram linkage mechanism of a reverse tricycle according to claim 1, characterized in that: When the front fork shock absorber moves up and down, since there is only a vertical direction, the distance between the two wheels always remains unchanged.

7. A reverse tricycle, characterized in that: It comprises the side parallelogram linkage mechanism of the inverted tricycle as described in any one of claims 1 to 6, a handle is provided at the upper end of the head pipe, and a wheel is mounted on the front fork shock absorber.

Images