Bicycle steering mechanism

Abstract

The utility model belongs to the technical field of steering mechanisms, and particularly relates to a bicycle steering mechanism which comprises a bicycle frame, a transmission assembly, a lever assembly and a wheel assembly, the bicycle frame comprises a head tube, a fixing rod, a supporting rod and a handlebar, the head tube and the fixing rod are arranged on the bicycle frame, the supporting rod is fixedly connected with the fixing rod, and the transmission assembly is connected with the lever assembly. The transmission assembly comprises a transmission shaft and a first rocker arm, the transmission shaft is rotationally installed in the head tube, the handlebar is fixedly connected to the top end of the transmission shaft, the first rocker arm is rotationally installed on the fixing rod, the transmission shaft is connected with the first rocker arm, the lever assembly is installed on the frame, and the lever assembly is fixedly connected with the wheel assembly. The wheel assemblies are rotationally installed on the two sides of the frame. The steering structure is simple in design and low in manufacturing cost, the steering system can stably and reliably achieve the steering function under various road conditions through matching of the transmission assembly and the lever assembly, and durability and safety in long-term use can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of steering mechanisms, and in particular relates to a bicycle steering mechanism. Background Art

[0002] With the development of economy and the progress of society, people pay more and more attention to the personalized and comfortable travel tools. As important commuting tools, bicycles and electric bicycles are also developing in a more personalized and comfortable direction. Although traditional two-wheeled bicycles have brought convenience to people's lives, they also have some safety hazards, such as easy side slip or rollover when making sharp turns, and handling accidents caused by insufficient tire grip in rainy, snowy or cold weather.

[0003] In order to solve the above problems, a design of a reverse three-wheeled bicycle has gradually emerged in the market, that is, a three-wheeled structure with one front wheel on each side and only one rear wheel. This design enables the two front wheels to have steering functions, while the rear wheel is responsible for driving. Compared with traditional two-wheeled bicycles, reverse three-wheeled bicycles have better stability and safety in complex terrain, especially stronger grip when turning. Compared with four-wheeled vehicles, reverse three-wheeled bicycles have a simpler structure and lower cost. Although reverse three-wheeled bicycles provide better stability and safety due to their unique structure, the existing designs still have some shortcomings. Specifically, the front steering mechanism design of most reverse three-wheeled vehicles on the market is not reasonable, which is mainly reflected in the following aspects: first, the steering mechanism structure is complex, which not only increases the manufacturing cost, but also brings inconvenience to maintenance; second, due to design limitations, the connection strength of these steering mechanisms is not high, and it is easy to loosen or damage during use; finally, when facing uneven or bumpy roads, the steering mechanism of the existing design is often difficult to withstand the impact, resulting in frequent failures.

[0004] Therefore, it is necessary to study a bicycle steering mechanism with a simpler structure, higher reliability and durability, and the ability to improve the overall performance of the reverse tricycle. Utility Model Content

[0005] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a bicycle steering mechanism to solve the technical problems that the steering mechanism in the prior art has a complex structure and poor reliability and durability.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A bicycle steering mechanism comprises: a frame, a transmission assembly, a lever assembly and a wheel assembly;

[0008] The frame comprises: a head pipe, a fixing rod, a support rod and a handlebar, wherein the head pipe is arranged on the frame, the fixing rod is fixedly connected to the frame, and the support rod is fixedly connected to the fixing rod;

[0009] The transmission assembly includes a transmission shaft and a first rocker arm, the transmission shaft is rotatably mounted in the head tube, the handlebar is fixedly connected to the top of the transmission shaft, the first rocker arm is rotatably mounted on the lower end surface of the fixed rod, the transmission shaft is connected to the first rocker arm, and the first rocker arm is connected to the lever assembly;

[0010] The lever assembly is mounted on the vehicle frame, and the lever assembly is fixedly connected to the wheel assembly;

[0011] The wheel assemblies are rotatably mounted on both sides of the vehicle frame.

[0012] Furthermore, the transmission assembly also includes a universal joint shaft, and the transmission shaft is connected to the first rocker arm via the universal joint shaft.

[0013] Furthermore, the transmission assembly also includes a first hinged rod, and the first rocker arm is hingedly connected to the lever assembly via the first hinged rod.

[0014] Furthermore, the lever assembly includes: a second rocker arm, a front axle clevis shaft rocker arm and a second hinged rod, the second rocker arm is rotatably mounted on the lower end surface of the fixed rod, the front axle clevis shaft rocker arm is rotatably mounted on the lower end surface of the support rod, the front axle clevis shaft rocker arm is fixedly connected to the wheel assembly, and the second rocker arm is hingedly connected to the front axle clevis shaft rocker arm via a second hinged rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses a bicycle steering mechanism. Through the effective cooperation of a transmission assembly and a lever assembly, the steering system can not only stably and reliably realize the steering function under various road conditions, but also ensure durability and safety in long-term use.

[0017] 2. The utility model discloses a bicycle steering mechanism, which has a simple steering structure design and low manufacturing cost, so that the entire steering system has high cost-effectiveness and is suitable for application scenarios with limited budgets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a bottom view schematic diagram of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the frame.

[0022] The reference numerals involved in the accompanying drawings are:

[0023] 1. Frame; 11. Head pipe; 12. Fixed rod; 13. Support rod; 14. Handlebar; 2. Transmission assembly; 21. Transmission shaft; 22. Universal joint shaft; 23. First rocker arm; 231. First articulated rod; 3. Lever assembly; 31. Second rocker arm; 32. Front axle clevis shaft rocker arm; 321. Second articulated rod; 4. Wheel assembly. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] See also Figures 1 to 4 As shown, a bicycle steering mechanism includes: a frame 1, a transmission assembly 2, a lever assembly 3 and a wheel assembly 4.

[0028] The frame 1 comprises: a head pipe 11, a fixing rod 12, a support rod 13 and a handlebar 14. The head pipe 11 is arranged on the frame 1, the fixing rod 12 is fixedly connected to the frame 1, and the support rod 13 is fixedly connected to the fixing rod 12.

[0029] The wheel assemblies 4 are rotatably mounted on both sides of the vehicle frame 1 .

[0030] The transmission assembly 2 includes a transmission shaft 21 and a first rocker arm 23. The transmission shaft 21 is rotatably mounted in the head tube 11, the handlebar 14 is fixedly connected to the top of the transmission shaft 21, the first rocker arm 23 is rotatably mounted on the lower end surface of the fixed rod 12, and the transmission shaft 21 is connected to the first rocker arm 23. Specifically, the transmission assembly 2 also includes a universal joint shaft 22, and the transmission shaft 21 is connected to the first rocker arm 23 through the universal joint shaft 22. It can be understood that when the driver drives the transmission shaft 21 to rotate through the handlebar 14, the first rocker arm 23 can be driven to rotate through the universal joint shaft 22. The first rocker arm 23 is connected to the lever assembly 3. Specifically, the transmission assembly 2 also includes a first hinged rod 231, and the corresponding first rocker arm 23 is hingedly connected to the second rocker arm 31 of the lever assembly 3 through the first hinged rod 231. It can be understood that when the first rocker arm 23 rotates, the second rocker arm 31 is driven to rotate through the first hinged rod 231.

[0031] The lever assembly 3 is mounted on the frame 1, and the lever assembly 3 is fixedly connected to the wheel assembly 4, that is, the wheel assembly 4 can complete the reversal and braking, and at the same time, the lever assembly 3 can drive the wheel assembly 4 to swing around the hinge axis between it and the support rod 13, thereby realizing steering. Specifically, the lever assembly 3 includes: a second rocker arm 31, a front axle clevis shaft rocker arm 32, and a second hinge rod 321. The second rocker arm 31 is rotatably mounted on the lower end surface of the fixed rod 12, and the front axle clevis shaft rocker arm 32 is rotatably mounted on the lower end surface of the support rod 13. The front axle clevis shaft rocker arm 32 is fixedly connected to the wheel assembly 4, and the second rocker arm 31 is hingedly connected to the front axle clevis shaft rocker arm 32 through the second hinge rod 321. It can be understood that when the first rocker arm 23 drives the second rocker arm 31 to rotate through the first hinge rod 231, the second rocker arm 31 drives the front axle clevis shaft rocker arm 32 and the wheel assembly 4 to swing through the second hinge rod 321, thereby realizing the steering of the inverted tricycle. The steering structure is simple in design and low in manufacturing cost. The wheel assembly 4 is effectively driven to achieve steering through the coordinated action of the transmission assembly 2 and the lever assembly 3. The entire system is not only durable but also very reliable.

[0032] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A bicycle steering mechanism, characterized in that: include: A vehicle frame (1), a transmission assembly (2), a lever assembly (3) and a wheel assembly (4); The frame (1) comprises: a head pipe (11), a fixing rod (12), a support rod (13) and a handlebar (14); the head pipe (11) is arranged on the frame (1); the fixing rod (12) is fixedly connected to the frame (1); and the support rod (13) is fixedly connected to the fixing rod (12); The transmission assembly (2) comprises a transmission shaft (21) and a first rocker arm (23); the transmission shaft (21) is rotatably mounted in the head tube (11); the handlebar (14) is fixedly connected to the top of the transmission shaft (21); the first rocker arm (23) is rotatably mounted on the lower end surface of the fixed rod (12); the transmission shaft (21) is connected to the first rocker arm (23); and the first rocker arm (23) is connected to the lever assembly (3); The lever assembly (3) is mounted on the vehicle frame (1), and the lever assembly (3) is fixedly connected to the wheel assembly (4); The wheel assembly (4) is rotatably mounted on both sides of the vehicle frame (1).

2. A bicycle steering mechanism according to claim 1, characterized in that: The transmission assembly (2) further comprises a universal joint shaft (22), and the transmission shaft (21) is connected to the first rocker arm (23) via the universal joint shaft (22).

3. A bicycle steering mechanism according to claim 1, characterized in that: The transmission assembly (2) further comprises a first hinged rod (231), and the first rocker arm (23) is hingedly connected to the lever assembly (3) via the first hinged rod (231).

4. A bicycle steering mechanism according to claim 1, characterized in that: The lever assembly (3) comprises: a second rocker arm (31), a front axle clevis shaft rocker arm (32) and a second hinged rod (321); the second rocker arm (31) is rotatably mounted on the lower end surface of the fixed rod (12); the front axle clevis shaft rocker arm (32) is rotatably mounted on the lower end surface of the support rod (13); the front axle clevis shaft rocker arm (32) is fixedly connected to the wheel assembly (4); and the second rocker arm (31) is hingedly connected to the front axle clevis shaft rocker arm (32) via the second hinged rod (321).

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