A steering limiting structure of a scooter and a scooter

Abstract

This application provides a steering limiting structure for a scooter and the scooter itself, including a pole, wheel frame, sleeve, frame, first limiting part, second limiting part, and third limiting part. The wheel frame is fixed to the lower end of the pole, and the frame is fixed to the sleeve. The pole is rotatably mounted inside the sleeve. The first limiting part is located on the frame or sleeve, and the second and third limiting parts are located on the pole or wheel frame, or the first limiting part is located on the pole or wheel frame, and the second and third limiting parts are located on the frame or sleeve. When the wheel frame rotates clockwise relative to the frame to a certain angle, the second limiting part abuts against the first limiting part to limit further rotation of the wheel frame relative to the frame. When the wheel frame rotates counterclockwise relative to the frame to a certain angle, the third limiting part abuts against the first limiting part to limit further rotation of the wheel frame relative to the frame. Compared with existing technologies, this design is simpler, has lower manufacturing costs, requires no additional machining, and is convenient for mass production.

Description

Technical Field

[0001] This application relates to the field of steering mechanisms, and more particularly to a steering limit structure for a scooter and the scooter itself. Background Technology

[0002] Scooters are lighter and more compact than bicycles, making them easier to carry and leading to their increasing popularity. However, existing scooter wheels are smaller than bicycle wheels, resulting in less resistance when turning. Therefore, careless turning can lead to excessive turning radius and falls, especially at higher speeds where sharp turns can cause instability and crashes. A relatively simple solution is to install a steering limiter on the scooter's steering column. However, overly complex steering limiter designs are costly, and the structure is subject to impact during rotation. Ensuring the steering limiter can withstand and mitigate this impact at a lower cost is a key technical challenge that needs to be addressed in current steering limiter design development.

[0003] Chinese patent application CN209581741U, entitled "A Steering Limiting Mechanism for a Scooter and a Scooter," discloses this utility model relating to a steering limiting mechanism for a scooter and a scooter. The mechanism includes a rotating shaft, a connecting tube, a foot pedal connecting frame, and foot pedals. The upper end of the rotating shaft is fixedly connected to the lower end of the scooter's control lever, and the lower end of the rotating shaft is fixedly connected to the scooter's front fork. The connecting tube is sleeved on the outside of the rotating shaft. One end of the foot pedal connecting frame is connected to the connecting tube, and the other end is connected to the foot pedal. A long, elongated second limiting strip is provided axially on the outer wall of the rotating shaft, and a long, elongated first limiting strip is provided axially on the inner wall of the connecting tube for limiting the rotation of the second limiting strip. This utility model limits the rotation angle of the rotating shaft by the mutual abutment of the first and second limiting strips, preventing excessive steering. However, its design is relatively complex and its manufacturing cost is high. Utility Model Content

[0004] This application provides a steering limit structure for a scooter and a scooter, so as to at least solve the technical problems of simplified steering limit structures in the prior art.

[0005] According to a first aspect of this application, a steering limiting structure for a scooter is provided, including a pole, a wheel frame, a sleeve, a frame, a first limiting part, a second limiting part, and a third limiting part. The wheel frame is fixed to the lower end of the pole, and the frame is fixed to the sleeve. The pole is rotatably mounted inside the sleeve. The first limiting part is disposed on the frame or the sleeve, and the second and third limiting parts are disposed on the pole or the wheel frame, or the first limiting part is disposed on the pole or the wheel frame, and the second and third limiting parts are disposed on the frame or the sleeve. When the wheel frame rotates clockwise relative to the frame to a certain angle, the second limiting part abuts against the first limiting part to limit further rotation of the wheel frame relative to the frame. When the wheel frame rotates counterclockwise relative to the frame to a certain angle, the third limiting part abuts against the first limiting part to limit further rotation of the wheel frame relative to the frame.

[0006] Compared with the prior art, the steering limit structure of the scooter in this application has the following advantages:

[0007] The first, second, and third limiting parts can be directly welded to the corresponding positions on the frame, sleeve, upright, and wheel frame, respectively. When the wheel frame rotates relative to the frame, the first limiting part can abut against the second or third limiting part to restrict the rotation of the wheel frame relative to the frame. Compared with the existing technology, the structure is simple and the manufacturing cost is low. No other machining is required. The first, second, and third limiting parts can be directly fixed by welding or formed by bending sheet metal by stamping, which is convenient for mass production.

[0008] In one embodiment, a first plate is provided at the lower end of the frame and a second plate is provided at the upper end of the wheel frame. The first plate and the second plate are parallel. A first limiting part, a second limiting part and a third limiting part are respectively provided on the first plate or the second plate. Both the first plate and the second plate are perpendicular to the central axis of the upright. In this way, the wheel frame will not interfere with the frame when it rotates relative to the frame, and the limiting is achieved only by the first limiting part, the second limiting part and the third limiting part.

[0009] In one embodiment, the first limiting part is formed by pressing and bending upward from the second plate, and the second and third limiting parts are formed by pressing and bending downward from the first plate. The second and third limiting parts of the sheet metal structure formed by pressing have a certain buffering effect when impacted, which can reduce the impact and prevent the first, second, and third limiting parts from being damaged under a large impact.

[0010] In one embodiment, the first limiting part protrudes upward from the second plate, and the second and third limiting parts extend outward from the sleeve. Thus, the first, second, and third limiting parts can be set by welding steel sheets, resulting in a simple structure and low manufacturing cost.

[0011] In one embodiment, the cross-sections of the second and third limiting parts are trapezoidal so that when the wheel frame rotates relative to the frame, the inclined surfaces of the second and third limiting parts abut against the first limiting part. This disperses the impact force, decomposes the impact in the horizontal direction into the vertical direction, and reduces the force in the horizontal direction.

[0012] In one embodiment, the vehicle frame is provided with a first side plate and a second side plate, and a second limiting part and a third limiting part are located between the first side plate and the second side plate. In this way, the first limiting part, the second limiting part and the third limiting part can cover the space between the first side plate and the second side plate to prevent foreign objects from entering and affecting steering.

[0013] In one embodiment, the upright and the sleeve are provided with a certain axial movement space so that the upright can move axially relative to the sleeve. This can decompose the horizontal impact force into the vertical direction and reduce the horizontal impact.

[0014] In one embodiment, the frame is connected to the sleeve via a rhomboid tube at a certain angle. The rhomboid tube includes a first side plate, a second side plate, and a bottom plate. The bottom plate is positioned between the first and second side plates, near the lower edges of the first and second side plates. The bottom plate has a rounded corner near one end of the sleeve, which bends along an arc for a certain distance before connecting to the sleeve. The lower edge of the first side plate near the sleeve extends downward beyond the bottom plate to be flush with the lower end of the sleeve, forming a third limiting part. The lower edge of the second side plate near the sleeve extends downward beyond the bottom plate to be flush with the lower end of the sleeve, forming a second limiting part. The first limiting part, the second limiting part, and the bottom plate form a semi-enclosed first space. The wheel frame has a first limiting part that extends into the first space. This design is simple and increases the strength of the frame. Foreign objects are less likely to enter the steering limit structure and affect steering. It is also simpler to manufacture. The second and third limit parts are integrated with the first and second side plates, without increasing manufacturing costs. The first limit part can be formed by simple stamping or welding. The structure is simple and the cost is low.

[0015] In one embodiment, the first limiting part is provided with a limiting plate, and the end of the limiting plate is provided with a cylindrical abutment post. The abutment post is at least partially located in the first space. The cylindrical abutment post can reduce the contact area, increase the buffering performance, and reduce the impact force generated by turning.

[0016] According to a second aspect of this application, a scooter is provided that uses the aforementioned scooter steering limit structure, thereby restricting steering and increasing driving safety.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0019] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0020] Figure 1 A schematic diagram of the structure of the scooter according to Embodiment 1 of this application is shown;

[0021] Figure 2 It shows Figure 1 Enlarged view of a portion of point A in the middle;

[0022] Figure 3 A schematic diagram of the rear of the scooter according to Embodiment 1 of this application is shown;

[0023] Figure 4 It shows Figure 3 Schematic diagram of half section at point AA;

[0024] Figure 5 It shows Figure 4 A magnified view of a portion of point B in the diagram;

[0025] Figure 6 This paper shows a schematic diagram of a portion of the frame and steering limit structure of the scooter according to Embodiment 1 of this application;

[0026] Figure 7 This paper shows a schematic diagram illustrating the relative positions of the second limiting part and the third limiting part of the steering limiting structure of the scooter according to Embodiment 1 of this application;

[0027] Figure 8 This paper shows a schematic diagram of the first limiting part of the steering limiting structure of the scooter according to Embodiment 1 of this application;

[0028] Figure 9 This paper shows a schematic diagram of the first limiting part of the steering limiting structure of the scooter according to Embodiment 1 of this application;

[0029] Figure 10 This paper shows a schematic diagram of the first limiting part of the steering limiting structure of the scooter according to Embodiment 2 of this application;

[0030] Figure 11 This paper shows a schematic diagram of the second and third limiting parts of the steering limiting structure of the scooter according to Embodiment 2 of this application;

[0031] Figure 12 A schematic diagram of the structure of the scooter according to Embodiment 3 of this application is shown;

[0032] Figure 13 A half-sectional schematic diagram of the scooter of Embodiment 3 of this application is shown;

[0033] Figure 14 It shows Figure 13 A magnified view of part C in the diagram;

[0034] Figure 15 A schematic diagram of the first limiting part of the steering limiting structure of the scooter according to Embodiment 3 of this application is shown;

[0035] Figure 16 A schematic diagram of the composition of the steering limit structure of the scooter in Embodiment 4 of this application is shown.

[0036] Explanation of the labels in the diagram:

[0037] 1. Upright pole; 2. Wheel frame; 3. Sleeve; 4. Frame; 5. First limiting part; 6. Second limiting part; 7. Third limiting part; 8. Handlebar; 9. Steering rod; 21. Second flat plate; 22. First rectangular stamping hole; 23. Second rectangular stamping hole; 24. Third rectangular stamping hole; 41. Steering end; 42. First flat plate; 43. Rhomboid tube; 44. First side plate; 45. Second side plate; 46. Base plate; 47. Rounded corner; 48. First space; 51. Limiting plate; 52. Abutment post; 61. Sloping surface. Detailed Implementation

[0038] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Example 1:

[0040] like Figure 1 and Figure 3 As shown, a scooter includes a frame 4, handlebars 8, steering rod 9, upright post 1, and wheel frame 2. The upright post 1 is fixed to the wheel frame 2, the steering rod 9 is fixed to the upright post 1, the handlebars 8 are fixed to the steering rod 9, and the front end of the frame 4 is fixed to the upright post 1 in a manner that allows it to rotate relative to the upright post 1. For some non-foldable scooters, the upright post 1 and the steering rod 9 are an integral structure.

[0041] like Figure 2 , Figure 4 and Figure 5As shown, a steering limiting structure for a scooter, mainly installed on the scooter, includes a pole 1, wheel frame 2, sleeve 3, frame 4, first limiting part 5, second limiting part 6, and third limiting part 7. The pole 1, wheel frame 2, sleeve 3, and frame 4 are the original structure of the scooter. The wheel frame 2 is fixed to the lower end of the pole 1, and the frame 4 is fixed to the sleeve 3. The pole 1 is installed in the sleeve 3 in a way that allows it to rotate relative to the sleeve 3. The first limiting part 5 is located in the frame 4 or the sleeve 3, and the second limiting part 6 and the third limiting part 7 are located in the pole 1 or the wheel frame 2, or the first limiting part 5 is located in the pole 1 or the wheel frame 2, and the second limiting part 6 and the third limiting part 7 are located in the frame 4 or the sleeve 3. The first limiting part 5, the second limiting part 6, and the third limiting part 7 can all be set as rectangular block structures.

[0042] like Figure 2 , Figure 4 and Figure 5 As shown, since different positions are replaced with conventional technical means, this embodiment takes the first limiting part 5 being set on the wheel frame 2 and the second limiting part 6 being set on the frame 4 as an example. When the wheel frame 2 rotates clockwise relative to the frame 4 to a certain angle, the clockwise rotation angle is controlled within the range of 30°-60°. The second limiting part 6 abuts against the first limiting part 5 to limit the wheel frame 2 from rotating further relative to the frame 4. When the wheel frame 2 rotates counterclockwise relative to the frame 4 to a certain angle, the third limiting part 7 abuts against the first limiting part 5 to limit the wheel frame 2 from rotating further relative to the frame 4. The counterclockwise rotation angle is the same as the clockwise rotation angle, and the range is controlled within 30°-60°.

[0043] like Figure 6 and Figure 7 As shown, in one embodiment, the frame 4 is formed by bending sheet metal. A cubic steering end 41 is formed at the front end of the frame 4. A sleeve 3 is disposed inside the steering end 41. A first flat plate 42 is provided at the lower end of the steering end 41. The first flat plate 42 is formed by bending sheet metal and drilling a hole in its center, then welding it to the sleeve 3 to form an integral structure. A second limiting part 6 and a third limiting part 7 extend from the sleeve 3 towards the pointed corner of the steering end 41. The cross-sections of the second limiting part 6 and the third limiting part 7 are trapezoidal, so that when the wheel frame 2 rotates relative to the frame 4, the inclined surfaces 61 of the second limiting part 6 and the third limiting part 7 abut against the first limiting part 5. The second limiting part 6 and the third limiting part 7 are fixed to the first flat plate 42 and the sleeve 3 by welding to form an integral structure. The second limiting part 6 and the third limiting part 7 are symmetrically arranged.

[0044] like Figure 8 and Figure 9As shown, the wheel frame 2 is formed by bending sheet metal and welded to the lower end of the upright 1. The front end of the wheel frame 2 is also a cubic structure. A second flat plate 21 is provided on the upper end of the wheel frame 2. The first flat plate 42 is parallel to the second flat plate 21, and both the first flat plate 42 and the second flat plate 21 are perpendicular to the central axis of the upright 1. A first limiting part 5, a second limiting part 6, and a third limiting part 7 are respectively provided on the first flat plate 42 or the second flat plate 21. In the embodiment, the first limiting part 5 protrudes upward from the second flat plate 21, which means that the first limiting part 5 can be set by welding. The first limiting part 5 is a protruding rectangular steel block.

[0045] like Figure 1 and Figure 3 As shown, in one embodiment, the frame 4 is formed by bending sheet metal to form a first side plate and a second side plate, and the second limiting part 6 and the third limiting part 7 are located between the first side plate and the second side plate.

[0046] like Figure 5 As shown in one possible embodiment, the upright 1 and the sleeve 3 are provided with a certain axial movement space in the axial direction so that the upright 1 can move axially relative to the sleeve 3.

[0047] Example 2:

[0048] like Figure 10 and Figure 11 As shown, the difference from Embodiment 1 is that the first limiting part 5 is formed by pressing and bending upward from the second plate 21, forming a first rectangular punching hole 22 on the second plate 21, and the second limiting part 6 and the third limiting part 7 are formed by pressing and bending downward from the first plate 42, forming a second rectangular punching hole 23 and a third rectangular punching hole 24 on the first plate 42.

[0049] Example 3:

[0050] like Figure 12 , Figure 13 and Figure 14 As shown, the difference from Embodiment 1 is that the frame 4 is connected to the sleeve 3 via a rhomboid tube 43. The rhomboid tube 43 and the sleeve 3 form a certain angle. The rhomboid tube 43 includes a first side plate 44, a second side plate 45, and a bottom plate 46. The bottom plate 46 is located between the first side plate 44 and the second side plate 45. The bottom plate 46 is located near the lower edge of the first side plate 44 and the second side plate 45. The bottom plate 46 has a rounded corner 47 at one end near the sleeve 3. The rounded corner 47 is bent along an arc for a certain distance. Connected to the sleeve 3, the lower edge of the first side plate 44 near the sleeve 3 extends downward past the bottom plate 46 to be flush with the lower end of the sleeve 3 to form a third limiting part 7. The lower edge of the second side plate 45 near the sleeve 3 extends downward past the bottom plate 46 to be flush with the lower end of the sleeve 3 to form a second limiting part 6. The first limiting part 5, the second limiting part 6 and the bottom plate 46 form a semi-enclosed first space 48. The wheel frame 2 is provided with the first limiting part 5, which extends into the first space 48.

[0051] like Figure 14 and Figure 15 As shown, in one possible embodiment, the first limiting part 5 is provided with a limiting plate 51, and the end of the limiting plate 51 is provided with a cylindrical abutment post 52, and the abutment post 52 is at least partially located in the first space 48.

[0052] Example 4:

[0053] like Figure 16 As shown, the difference from Embodiment 3 is that the first limiting part 5 and the wheel frame 2 are integrally formed by bending through stamping. The first limiting part 5 is a strip-shaped sheet metal structure. The first limiting part 5 is at least partially located in the first space 48 formed by the first side plate 44 and the second side plate 45.

[0054] Example 5:

[0055] like Figures 1 to 16 As shown, a scooter uses the steering limit structure of any of the scooters in Examples 1-4.

[0056] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0057] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] It should be understood that if the directional terms such as "upper," "lower," "front," "rear," "left," and "right" are used to describe the embodiments of this application from the angle shown in a certain drawing, they should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that a component is connected to another component "upper" or "lower," it can be directly connected to the other component "upper" or "lower," or it can be indirectly connected to the other component "upper" or "lower" through an intermediate component.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A steering limiting structure for a scooter, comprising a pole (1), a wheel frame (2), a sleeve (3), a frame (4), a first limiting part (5), a second limiting part (6), and a third limiting part (7), wherein the wheel frame (2) is fixed to the lower end of the pole (1), the frame (4) is fixed to the sleeve (3), and the pole (1) is rotatably mounted within the sleeve (3), characterized in that: The first limiting part (5) is disposed on the frame (4) or the sleeve (3), and the second limiting part (6) and the third limiting part (7) are disposed on the upright (1) or the wheel frame (2), or the first limiting part (5) is disposed on the upright (1) or the wheel frame (2), and the second limiting part (6) and the third limiting part (7) are disposed on the frame (4) or the sleeve (3). When the wheel frame (2) rotates clockwise relative to the frame (4) to a certain angle, the second limiting part (6) and the first limiting part (5) abut against each other to restrict the wheel frame (2) from rotating further relative to the frame (4). When the wheel frame (2) rotates counterclockwise relative to the frame (4) to a certain angle, the third limiting part (7) and the first limiting part (5) abut against each other to restrict the wheel frame (2) from rotating further relative to the frame (4).

2. The steering limiting structure for a scooter according to claim 1, characterized in that: The lower end of the frame (4) is provided with a first plate (42), and the upper end of the wheel frame (2) is provided with a second plate (21). The first plate (42) and the second plate (21) are parallel. The first limiting part (5), the second limiting part (6) and the third limiting part (7) are respectively provided on the first plate (42) or the second plate (21). The first plate (42) and the second plate (21) are both perpendicular to the central axis of the upright (1).

3. The steering limiting structure for a scooter according to claim 2, characterized in that: The first limiting part (5) is provided to protrude upward from the second plate (21), and the second limiting part (6) and the third limiting part (7) extend outward from the sleeve (3).

4. The steering limiting structure for a scooter according to claim 3, characterized in that: The second limiting part (6) and the third limiting part (7) have trapezoidal cross sections, so that when the wheel frame (2) rotates relative to the frame (4), the inclined surface (61) of the second limiting part (6) and the third limiting part (7) abuts against the first limiting part (5).

5. The steering limiting structure for a scooter according to claim 2, characterized in that: The first limiting part (5) is formed by pressing and bending upward from the second plate (21), and the second limiting part (6) and the third limiting part (7) are formed by pressing and bending downward from the first plate (42).

6. The steering limiting structure for a scooter according to any one of claims 1-5, characterized in that: The frame (4) is provided with a first side plate (44) and a second side plate (45), and the second limiting part (6) and the third limiting part (7) are located between the first side plate (44) and the second side plate (45).

7. The steering limiting structure for a scooter according to claim 6, characterized in that: The upright (1) and the sleeve (3) are provided with a certain axial movement space so that the upright (1) can move axially relative to the sleeve (3).

8. The steering limiting structure for a scooter according to claim 1, characterized in that: The frame (4) is connected to the sleeve (3) via a rhomboid tube (43). The rhomboid tube (43) forms a certain angle with the sleeve (3). The rhomboid tube (43) includes a first side plate (44), a second side plate (45), and a bottom plate (46). The bottom plate (46) is located between the first side plate (44) and the second side plate (45). The bottom plate (46) is located near the lower edge of the first side plate (44) and the second side plate (45). The bottom plate (46) has a rounded corner (47) at one end near the sleeve (3). The rounded corner (47) bends along an arc for a certain distance and then connects to the sleeve (3). The first side plate (44) extends downward past the bottom plate (46) near the lower edge of the sleeve (3) to form the third limiting part (7) flush with the lower end of the sleeve (3). The second side plate (45) extends downward past the bottom plate (46) near the lower edge of the sleeve (3) to form the second limiting part (6) flush with the lower end of the sleeve (3). The first limiting part (5), the second limiting part (6) and the bottom plate (46) form a semi-enclosed first space (48). The wheel frame (2) is provided with the first limiting part (5), which extends into the first space (48).

9. The steering limiting structure for a scooter according to claim 8, characterized in that: The first limiting part (5) is provided with a limiting plate (51), and the end of the limiting plate (51) is provided with a cylindrical abutment post (52), and the abutment post (52) is at least partially located in the first space (48).

10. A scooter, characterized in that: Use the steering limit structure of the scooter described in any one of claims 1-9.

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