Tricycle rear wheel steering reset mechanism and tricycle

Abstract

The utility model discloses a tricycle rear wheel steering reset mechanism and a vehicle, and relates to the technical field of vehicles. The tricycle rear wheel steering reset mechanism comprises a first cantilever, a second cantilever, a main shaft, a fulcrum part, a pivot mechanism, a first fisheye bearing and a second fisheye bearing. The pivot part is arranged to be hinged to the pivot mechanism, the pivot mechanism comprises the base, the center shaft, the first hinge column and the second hinge column, the center shaft is vertically connected between the two horizontal cantilevers of the pivot part, and the base is rotatably connected with the center shaft; the first hinge column and the second hinge column located on the two sides of the base are hinged to the first cantilever and the second cantilever through the first fisheye bearing and the second fisheye bearing respectively, the center mechanism is small in size, and the tricycle rear wheel steering reset mechanism can be suitable for being installed in a limited space.

Description

Three-wheeled vehicle rear wheel steering reset mechanism and vehicle Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a rear wheel steering reset mechanism for a three-wheeled vehicle and the vehicle itself. Background Technology

[0002] With the development of electric scooters, three-wheeled vehicles have emerged from two-wheeled models, offering a more stable riding experience. The most crucial element for a good riding experience on a three-wheeled vehicle is the design of the steering mechanism. Currently, the steering mechanisms on the market are divided into two types: cantilever steering and suspension steering. However, regardless of whether it's cantilever or suspension steering, to ensure the coordinated action of the two wheels during steering, a highly flexible central component is incorporated. This means that the product cannot achieve self-balance when parked, requiring the use of a kickstand. Existing technology often incorporates one or more dampers to help the central component return to its original position after operation. Installing dampers requires a significant amount of space, making this structure unsuitable in confined spaces. Summary of the Invention

[0003] This application provides a rear wheel steering reset mechanism and vehicle for a tricycle, which can solve the technical problem that current rear wheel steering mechanisms for tricycles often use one or more dampers to help the central parts reset after operation. The installation of the dampers requires a lot of space, resulting in the rear wheel steering mechanism of the tricycle occupying a large space and being difficult to install in a limited space.

[0004] This application provides a rear wheel steering reset mechanism for a three-wheeled vehicle, comprising:

[0005] A first cantilever, the outer rear end of the first cantilever being adapted to be connected to a first wheel motor, and a first pivot shaft being provided at the top of the first cantilever;

[0006] The second cantilever has a rear outer side adapted to be connected to a second wheel motor, and a second pivot is provided at the top of the second cantilever.

[0007] A main shaft, which is connected between the front end of the first cantilever and the front end of the second cantilever;

[0008] A fulcrum component, the front end of which is rotatably connected to the main shaft, and the rear end of which is provided with two horizontal cantilever arms;

[0009] The central mechanism includes a base, a central shaft, a first hinge post, and a second hinge post. A central hole is provided in the middle of the base, and the central shaft is rotatably disposed in the central hole. The central shaft is vertically connected between two horizontal cantilever arms. A first hinge hole and a second hinge hole are respectively provided on both sides of the base. The central hole, the first hinge hole, and the second hinge hole are arranged in a triangle. The first hinge post is installed in the first hinge hole, and the second hinge post is installed in the second hinge hole.

[0010] The first fisheye bearing is rotatably connected to the first rotating shaft, and the fisheye joint of the first fisheye bearing is rotatably connected to the first hinge column.

[0011] The second fisheye bearing is rotatably connected to the second shaft, and the fisheye joint of the second fisheye bearing is rotatably connected to the second hinge post.

[0012] Furthermore, the central mechanism also includes a top bearing and a bottom bearing, which are respectively disposed at both ends of the central shaft. The outer rings of the top bearing and the bottom bearing are interference-fitted with the inner wall of the central hole, and the inner rings of the top bearing and the bottom bearing are interference-fitted with the central shaft.

[0013] Furthermore, the central mechanism also includes a rubber ring, which is sleeved on the central shaft and located between the top bearing and the bottom bearing.

[0014] Furthermore, the ends of the central shaft extending beyond the top bearing and the bottom bearing are provided with anti-rotation planes, and the two horizontal cantilever arms are provided with anti-rotation grooves facing the ends of the central shaft. The ends of the central shaft are engaged in the anti-rotation grooves, and the anti-rotation planes abut against the anti-rotation grooves.

[0015] Furthermore, the base is provided with a first support plate and a second support plate arranged in parallel. The first support plate and the second support plate have the same shape. The first support plate and the second support plate are respectively provided with a first hinge hole and a second hinge hole on their sides. The two ends of the first hinge post are installed on the first hinge hole on the first support plate and the second support plate, and the two ends of the second hinge post are installed on the second hinge hole on the first support plate and the second support plate.

[0016] Furthermore, the front end of the first cantilever is provided with a first mounting hole, the front end of the second cantilever is provided with a second mounting hole, and the two ends of the main shaft are respectively fixed in the first mounting hole and the second mounting hole.

[0017] Furthermore, the top surface of the fulcrum component is provided with a secondary shaft, which is arranged parallel to the main shaft, and the secondary shaft is used to connect a shock absorber.

[0018] This application also provides a vehicle that includes the aforementioned three-wheeled vehicle rear wheel steering reset mechanism.

[0019] Furthermore, the vehicle also includes a first wheel motor and a second wheel motor, which are respectively connected to the outer rear end of the rear wheel steering reset mechanism of the tricycle.

[0020] Furthermore, the vehicle also includes a shock absorber connected to the top of the rear wheel steering reset mechanism of the tricycle.

[0021] The rear wheel steering reset mechanism and vehicle provided in this application embodiment include a first cantilever, a second cantilever, a main shaft, a fulcrum component, a central mechanism, a first fisheye bearing, and a second fisheye bearing. The fulcrum component is hinged to the central mechanism. The central mechanism includes a base, a central shaft, a first hinge column, and a second hinge column. The central shaft is vertically connected between the two horizontal cantilever components of the fulcrum component. The base is rotatably connected to the central shaft. The first hinge column and the second hinge column located on both sides of the base are hinged to the first cantilever and the second cantilever respectively through the first fisheye bearing and the second fisheye bearing. The central mechanism is small in size, which allows the rear wheel steering reset mechanism of the tricycle to be installed in a limited space. Attached Figure Description

[0022] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0023] Figure 1 is a schematic diagram of the structure of the rear wheel steering reset mechanism of a tricycle provided in an embodiment of this application;

[0024] Figure 2 is a rear view of the tricycle rear wheel steering reset mechanism provided in the embodiment of this application in the usage state;

[0025] Figure 3 is a structural schematic diagram of the three-wheeled vehicle rear wheel steering reset mechanism provided in the embodiment of this application in the usage state;

[0026] Figure 4 is a structural schematic diagram of the fulcrum component provided in an embodiment of this application;

[0027] Figure 5 is a schematic diagram of the central mechanism provided in an embodiment of this application;

[0028] Figure 6 is an exploded view of the central mechanism provided in the embodiment of this application;

[0029] Figure 7 is a schematic diagram of the force transmission principle of the rear wheel steering reset mechanism of the tricycle provided in the embodiment of this application.

[0030] The markings in the diagram are as follows:

[0031] The tricycle rear wheel steering reset mechanism 10 includes: a first cantilever 1, a first pivot 11, a first mounting hole 12, a second cantilever 2, a second pivot 21, a second mounting hole 22, a main shaft 3, a fulcrum component 4, a horizontal cantilever 41, an anti-rotation groove 411, a secondary shaft 42, a central mechanism 5, a base 51, a center hole 511, a first hinge hole 512, a second hinge hole 513, a first support plate 514, a second support plate 515, a central shaft 52, an anti-rotation plane 521, a first hinge column 53, a second hinge column 54, a top bearing 55, a bottom bearing 56, a rubber ring 57, a first fisheye bearing 6, a second fisheye bearing 7, a first wheel motor 20, a second wheel motor 30, and a shock absorber 40. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] As shown in Figures 1, 2, 3, 4, 5, and 6, this application embodiment provides a rear wheel steering reset mechanism 10 for a tricycle, including: a first cantilever 1, a second cantilever 2, a main shaft 3, a fulcrum component 4, a central mechanism 5, a first fisheye bearing 6, and a second fisheye bearing 7.

[0036] The first cantilever 1 has its rear outer side adapted to connect to a first wheel motor 20, and a first rotating shaft 11 is provided at the top of the first cantilever 1; the second cantilever 2 has its rear outer side adapted to connect to a second wheel motor 30, and a second rotating shaft 21 is provided at the top of the second cantilever 2; the main shaft 3 is connected between the front end of the first cantilever 1 and the front end of the second cantilever 2; the front end of the fulcrum part 4 is rotatably connected to the main shaft 3, and the rear end of the fulcrum part 4 is provided with two horizontal cantilever arms 41; the central mechanism 5 includes a base 51, a central shaft 52, a first hinge column 53 and a second hinge column 54, a central hole 511 is provided in the middle of the base 51, and the central shaft 52 is rotatably disposed in the central hole 511. The spindle 52 is vertically connected between the two horizontal cantilever arms 41. The base 51 has a first hinge hole 512 and a second hinge hole 513 on both sides. The center hole 511, the first hinge hole 512 and the second hinge hole 513 are arranged in a triangle. The first hinge post 53 is installed in the first hinge hole 512 and the second hinge post 54 is installed in the second hinge hole 513. The first fisheye bearing 6 is rotatably connected to the first rotating shaft 11, and the fisheye joint of the first fisheye bearing 6 is rotatably connected to the first hinge post 53. The second fisheye bearing 7 is rotatably connected to the second rotating shaft 21, and the fisheye joint of the second fisheye bearing 7 is rotatably connected to the second hinge post 54.

[0037] That is, the first hinge post 53 and the second hinge post 54 are vertically connected between the two horizontal cantilever arms 41, and the first hinge post 53 and the second hinge post 54 are located on both sides of the central axis 52.

[0038] The central mechanism 5 in this embodiment is small in size, which makes the rear wheel steering reset mechanism 10 of the tricycle suitable for installation in a limited space.

[0039] When the vertical forces on the first cantilever 1 and the second cantilever 2 are different, the first spherical bearing 6 is driven by the first cantilever 1, and the second spherical bearing 7 is driven by the second cantilever 2, stretching the central mechanism 5 to rotate relative to the fulcrum part 4 along the central axis 52. The rubber ring 57 deforms under stress, achieving stress buffering under the limiting action of the top bearing 55 and the bottom bearing 56, maintaining the first cantilever 1 and the second cantilever 2 at the same horizontal height. When the vertical forces on the first cantilever 1 and the second cantilever 2 are the same, the rubber ring 57 elastically returns to its original position. When the vertical forces on the first cantilever 1 and the second cantilever 2 are different, the rubber ring 57 deforms under stress due to a slight deviation of the central axis 52, achieving stress buffering and maintaining the horizontal height of the first cantilever 1 and the second cantilever 2 at the same horizontal height. When the vertical forces on the first cantilever 1 and the second cantilever 2 are the same, the rubber ring 57 elastically returns to its original position, reducing rear wheel suspension and improving vehicle stability.

[0040] As shown in Figures 5 and 6, the central mechanism 5 further includes a top bearing 55 and a bottom bearing 56, which are respectively disposed at both ends of the central shaft 52. The outer rings of the top bearing 55 and the bottom bearing 56 are interference-fitted with the inner wall of the central hole 511, and the inner rings of the top bearing 55 and the bottom bearing 56 are interference-fitted with the central shaft 52. It is understood that ball bearings are provided between the outer and inner rings of the top bearing 55 and the bottom bearing 56, which allows for positional offset of the central shaft 52 along the axis of the top bearing 55 and the bottom bearing 56, and is suitable for buffering uneven vertical force on the first cantilever 1 and the second cantilever 2.

[0041] As shown in Figures 5 and 6, the central mechanism 5 also includes a rubber ring 57, which is sleeved on the central shaft 52 and located between the top bearing 55 and the bottom bearing 56. The rubber ring 57 is formed by injecting rubber, and it connects the base 51 and the central shaft 52 together. The top bearing 55 and the bottom bearing 56 are inserted into the center hole 511 to fix the positions of the central shaft 52 and the base 51.

[0042] As shown in Figures 5 and 6, the ends of the central shaft 52 extending beyond the top bearing 55 and the bottom bearing 56 are provided with anti-rotation planes 521. The two horizontal cantilever arms 41 are provided with anti-rotation grooves 411 facing the ends of the central shaft 52. The ends of the central shaft 52 are engaged within the anti-rotation grooves 411, and the anti-rotation planes 521 abut against the anti-rotation grooves 411. The anti-rotation planes 521 prevent the central shaft 52 from rotating within the anti-rotation grooves 411, thus preventing the central mechanism 5 from rotating. With the central shaft 52 stationary, the rubber ring 57 is elastic and deforms when subjected to external force. Under the constraint of the top bearing 55 and the bottom bearing 56, the base 51 can only rotate along the central shaft 52, returning to its original shape when no force is applied.

[0043] The operating principle of the tricycle rear wheel steering reset mechanism 10 is shown in Figure 7. When the tricycle rear wheel steering reset mechanism 10 is steering, if the first cantilever 1 is subjected to an upward force from the tire, the force is transmitted to the central mechanism 5 through the first spherical bearing 6. The rubber ring 57 inside the central mechanism 5 deforms under the force. Under the constraint of the top bearing 55 and the bottom bearing 56, the base 51 of the central mechanism 5 rotates along the central axis 52, transmitting the force to the second cantilever 2, generating a downward force to press down the tire and prevent it from being suspended. When there is no force, the rubber ring 57 inside the central mechanism 5 returns to its original position, completing the reset.

[0044] As shown in Figures 5 and 6, the base 51 is provided with a first support plate 514 and a second support plate 515 arranged in parallel. The first support plate 514 and the second support plate 515 have the same shape. The first support plate 514 and the second support plate 515 are respectively provided with a first hinge hole 512 and a second hinge hole 513 on both sides. The two ends of the first hinge post 53 are installed on the first hinge hole 512 on the first support plate 514 and the second support plate 515, and the two ends of the second hinge post 54 are installed on the second hinge hole 513 on the first support plate 514 and the second support plate 515.

[0045] As shown in Figure 2, the front end of the first cantilever 1 is provided with a first mounting hole 12, and the front end of the second cantilever 2 is provided with a second mounting hole 22. The two ends of the main shaft 3 are respectively fixed in the first mounting hole 12 and the second mounting hole 22.

[0046] As shown in Figure 2, the top surface of the fulcrum part 4 is provided with a secondary shaft 42, which is arranged parallel to the main shaft 3. The secondary shaft 42 is used to connect a shock absorber 40. The shock absorber 40 can buffer stress.

[0047] As shown in Figures 2 and 3, this application also provides a vehicle, which includes the three-wheeled vehicle rear wheel steering reset mechanism 10 described above.

[0048] As shown in Figures 2 and 3, the vehicle also includes a first wheel motor 20 and a second wheel motor 30, which are respectively connected to the outer rear end of the rear wheel steering reset mechanism 10 of the tricycle.

[0049] As shown in Figures 2 and 3, the vehicle also includes a shock absorber 40, which is connected to the top of the rear wheel steering reset mechanism 10 of the tricycle. The shock absorber 40 can buffer stress.

[0050] The rear wheel steering reset mechanism 10 and vehicle of the tricycle provided in this application embodiment include a first cantilever 1, a second cantilever 2, a main shaft 3, a fulcrum part 4, a central mechanism 5, a first fisheye bearing 6, and a second fisheye bearing 7. The fulcrum part 4 is hinged to the central mechanism 5. The central mechanism 5 includes a base 51, a central shaft 52, a first hinge column 53, and a second hinge column 54. The central shaft 52 is vertically connected between the two horizontal cantilever 41 of the fulcrum part 4. The base 51 is rotatably connected to the central shaft 52. The first hinge column 53 and the second hinge column 54 located on both sides of the base 51 are hinged to the first cantilever 1 and the second cantilever 2 respectively through the first fisheye bearing 6 and the second fisheye bearing 7. The central mechanism 5 is small in size, which makes the rear wheel steering reset mechanism 10 of the tricycle suitable for installation in a limited space.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0052] The foregoing has provided a detailed description of a tricycle rear wheel steering reset mechanism and vehicle according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rear wheel steering reset mechanism for a tricycle, characterized in that, include: A first cantilever, the outer rear end of which is adapted to connect to a first wheel motor, and a first rotating shaft is provided at the top of the first cantilever; a second cantilever, the outer rear end of which is adapted to connect to a second wheel motor, and a second rotating shaft is provided at the top of the second cantilever; a main shaft, the main shaft being connected between the front ends of the first cantilever and the front ends of the second cantilever; a fulcrum component, the front end of which is rotatably connected to the main shaft, and the rear end of which is provided with two horizontal cantilever arms; a central mechanism, including a base, a central shaft, a first hinge column, and a second hinge column, the base having a central hole in the middle, and a rotatable component being disposed within the central hole. The central shaft is vertically connected between the two horizontal cantilever arms. A first hinge hole and a second hinge hole are respectively provided on both sides of the base. The central hole, the first hinge hole, and the second hinge hole are arranged in a triangle. The first hinge post is installed in the first hinge hole, and the second hinge post is installed in the second hinge hole. A first fisheye bearing is rotatably connected to the first rotating shaft, and the fisheye joint of the first fisheye bearing is rotatably connected to the first hinge post. A second fisheye bearing is rotatably connected to the second rotating shaft, and the fisheye joint of the second fisheye bearing is rotatably connected to the second hinge post.

2. The tricycle rear wheel steering reset mechanism as described in claim 1, characterized in that, The central mechanism also includes a top bearing and a bottom bearing, which are respectively disposed at both ends of the central shaft. The outer rings of the top bearing and the bottom bearing are interference-fitted with the inner wall of the central hole, and the inner rings of the top bearing and the bottom bearing are interference-fitted with the central shaft.

3. The tricycle rear wheel steering reset mechanism as described in claim 2, characterized in that, The central mechanism also includes a rubber ring, which is sleeved on the central shaft and located between the top bearing and the bottom bearing.

4. The tricycle rear wheel steering reset mechanism as described in claim 2, characterized in that, The ends of the central shaft that extend beyond the top and bottom bearings are provided with anti-rotation planes. The two horizontal cantilever arms are provided with anti-rotation grooves facing the ends of the central shaft. The ends of the central shaft are engaged in the anti-rotation grooves, and the anti-rotation planes abut against the anti-rotation grooves.

5. The tricycle rear wheel steering reset mechanism as described in claim 1, characterized in that, The base is provided with a first support plate and a second support plate arranged in parallel. The first support plate and the second support plate have the same shape. The first support plate and the second support plate are respectively provided with a first hinge hole and a second hinge hole on their sides. The two ends of the first hinge post are installed on the first hinge hole on the first support plate and the second support plate, and the two ends of the second hinge post are installed on the second hinge hole on the first support plate and the second support plate.

6. The tricycle rear wheel steering reset mechanism as described in claim 1, characterized in that, The first cantilever has a first mounting hole at its front end, and the second cantilever has a second mounting hole at its front end. The two ends of the main shaft are respectively fixed in the first mounting hole and the second mounting hole.

7. The tricycle rear wheel steering reset mechanism as described in claim 1, characterized in that, The top surface of the fulcrum component is provided with a secondary shaft, which is arranged parallel to the main shaft, and the secondary shaft is used to connect a shock absorber.

8. A vehicle, characterized in that, The vehicle includes the rear wheel steering reset mechanism of a three-wheeled vehicle as described in any one of claims 1 to 7.

9. The vehicle as described in claim 8, characterized in that, The vehicle also includes a first wheel motor and a second wheel motor, which are respectively connected to the outer rear end of the rear wheel steering reset mechanism of the tricycle.

10. The vehicle as claimed in claim 8, characterized in that, The vehicle also includes a shock absorber connected to the top of the rear wheel steering reset mechanism of the tricycle.

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