Two-wheeled vehicle main frame cover
By using a non-metallic sheath at the bottom of the two-wheeled vehicle's main support frame, the problems of fatigue wear and ground scratches caused by metal foot plates were solved, resulting in improved stability and safety while reducing economic waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YADEA LOCOMOTIVE CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-26
AI Technical Summary
The metal base plates of existing two-wheeled vehicle main frames are prone to fatigue wear under repeated use and long-term stress, affecting safety and stability, and may also scratch the ground.
The detachable sheath, made of non-metallic materials, is integrally molded using an injection molding process. It includes a sleeve section and a support surface, and is used to protect the bottom of the main support and reduce welding deformation and friction damage.
It improves the stability and safety of the main support, avoids scratching the ground, reduces additional economic waste, and enhances the product's added performance and reliability.
Smart Images

Figure CN224277388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of two-wheeled vehicle accessories technology, and in particular to a two-wheeled vehicle main support sleeve. Background Technology
[0002] The main support frame of a two-wheeled vehicle serves as a key component for parking, enabling the vehicle to remain stable and upright during extended parking periods. When performing vehicle maintenance, supporting the vehicle allows repair personnel to easily inspect and repair parts such as the underside and wheels. In windy or inclement weather, using the main support frame increases vehicle stability and prevents the vehicle from being blown over.
[0003] The main support frame is generally made of steel pipe or stamped steel plate. To facilitate contact between the bottom and the ground, a base plate is usually installed at the bottom of the main support frame. The base plate at the bottom of the main support frame is the key part that directly contacts the ground, and its design and performance directly affect the stability, safety, and adaptability of the vehicle when parked. The base plate is usually a flat metal structure (such as a circular, elliptical, or rectangular steel plate) and is welded or bolted to the bottom end of the main support frame.
[0004] These metal base plates need to be welded to the main support. Under repeated use and prolonged stress, the multi-welded structure is prone to fatigue wear, affecting safety. Furthermore, after repeated friction, the metal material may develop sharp edges that can easily scratch floor surfaces. Utility Model Content
[0005] In response to the shortcomings of the existing production technology, the applicant provides a structurally sound two-wheeled vehicle main support sleeve. This sleeve uses non-metallic materials that are compatible with the main support, protecting the bottom of the main support while reducing the use of metal materials and lowering the probability of poor stability caused by welding deformation and inadequate stamping.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A main support sleeve for a two-wheeled vehicle is detachably installed at the bottom of the main support. The sleeve includes a sleeve section that fits onto the main support and a support surface that contacts the ground.
[0008] Using the main support rod as a reference, the sleeve section is coaxially fitted onto the bottom of the support rod, or radially fitted onto the bottom of the support rod.
[0009] As a further improvement to the above technical solution:
[0010] The support rod is a straight rod, and the sleeve section is coaxially sleeved at the bottom of the support rod.
[0011] The support surface of the socket section extends upward from the bottom surface of the socket section along the side wall of the socket section to the top of the socket section.
[0012] The support surface forms an extension edge on the side wall of the connecting section that faces the rear of the vehicle.
[0013] The extended edge forms a transitional connecting arc surface with the supporting surface.
[0014] The transition connecting arc surface protrudes from the side opposite to the socket section, and the extension edge extends from the transition connecting arc surface to the top of the socket section, with the thickness of the extension edge decreasing from the transition connecting arc surface to the top of the socket section.
[0015] The support surface is concentric with the bottom surface of the socket section, and the area of the support surface is larger than the area of the bottom surface of the socket section; the support surface is solid or has fastening holes.
[0016] The chamfered edges of the support surface form a wedge surface.
[0017] A base plate is radially provided at the bottom end of the support rod, and a sleeve section is fitted onto the base plate, with the sleeve section and the base plate being tightly connected.
[0018] The support surface extends from the bottom of the socket section to the top of the socket section.
[0019] The beneficial effects of this utility model are as follows:
[0020] This invention saves on material costs, reduces welding deformation, and solves the problem of poor overall stability caused by incomplete stamping of parts. The finished main support frame is less likely to scratch floors, exhibition stands, and other surfaces during use, reducing additional economic waste and improving the product's added performance.
[0021] This application provides an assembled plastic base sleeve, which is integrally molded by injection molding. It has a novel and beautiful shape, stable structure and high adaptability. The assembly operation is simple and convenient. It is fastened to the bottom of the main support tube by standard parts, which solves the problem of deformation caused by poor welding quality affecting the stability of the overall vehicle body and causing impact on the vehicle body.
[0022] This application also provides a base sleeve with a socket structure, which makes assembly more convenient.
[0023] This application adjusts the base sleeve through injection molding and applies it to the main bracket. In daily use, it avoids accidental scratches on the floor and tiles caused by the display of car models in the store, reducing additional economic waste and improving the added performance of the product. It features low cost, small size, high reliability, and high safety. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the foot cover of one embodiment of the present invention.
[0025] Figure 2 This is a side view of a foot cover according to an embodiment of the present invention.
[0026] Figure 3 This is a schematic diagram illustrating the cooperation between the base sleeve and the main support in another embodiment of this utility model.
[0027] Figure 4 This is a reverse schematic diagram illustrating the cooperation between the base sleeve and the main support in another embodiment of the present invention.
[0028] Figure 5 For application Figure 3 , Figure 4 The schematic diagram of the main support structure of the foot sleeve in the embodiment is shown.
[0029] The components include: 1. Main support; 2. Sleeve section; 3. Support surface; 4. Extension edge; 5. Transition connecting arc surface; 6. Fastener; 7. Fastening hole;
[0030] 101. Support rod; 102. Base plate;
[0031] 301. Wedge surface. Detailed Implementation
[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0033] like Figures 1-5 As shown, the two-wheeled vehicle main support 1 sleeve of this embodiment is detachably installed at the bottom end of the main support 1. The sleeve includes a sleeve section 2 that fits onto the main support 1 and a support surface 3 that contacts the ground.
[0034] With the support rod 101 of the main bracket 1 as the reference, the sleeve section 2 is coaxially fitted at the bottom of the support rod 101, or radially fitted at the bottom of the support rod 101.
[0035] The support rod 101 is a straight rod, and the sleeve section 2 is coaxially sleeved at the bottom of the support rod 101.
[0036] The support surface 3 of the socket section 2 extends upward from the bottom surface of the socket section 2 along the side wall of the socket section 2 to the top of the socket section 2.
[0037] The support surface 3 forms an extension edge 4 towards the rear of the vehicle on the side wall of the connecting section 2.
[0038] A transitional arc surface 5 is formed between the extended edge 4 and the supporting surface 3.
[0039] The transition connecting arc surface 5 protrudes to the side opposite to the socket section 2, and the extension edge 4 extends from the transition connecting arc surface 5 to the top of the socket section 2, and the thickness of the extension edge 4 decreases from the transition connecting arc surface 5 to the top of the socket section 2.
[0040] The support surface 3 is concentric with the bottom surface of the socket section 2, and the area of the support surface 3 is larger than the area of the bottom surface of the socket section 2; the support surface is solid or has fastening holes.
[0041] The edge of the support surface 3 is chamfered to form a wedge surface 301.
[0042] A base plate 102 is radially provided at the bottom end of the support rod 101, and a sleeve section 2 is sleeved on the base plate 102, and the sleeve section 2 and the base plate 102 are tightly connected.
[0043] The support surface 3 extends from the kick-up side of the main bracket 1, and extends from the bottom surface of the socket section 2 to the top surface of the socket section 2.
[0044] The specific structure of this application is as follows:
[0045] Example 1:
[0046] The foot sleeve provided in this embodiment is suitable for the main bracket 1 where the support rod 101 is straight. The foot sleeve is directly fitted from the bottom of the support rod 101 upwards, and the limiting is achieved by the frictional resistance between the inner wall of the foot sleeve and the support rod 101.
[0047] like Figure 1 and Figure 2 As shown, this bottom corner sleeve includes a cylindrical sleeve section 2, which is coaxially fitted with the support rod 101. A support surface 3 is added to the bottom of the sleeve section 2. In this embodiment, the support surface 3 is designed to accommodate the situation where the main bracket 1 is kicked backward. Therefore, the support surface 3 extends from the bottom to the top of the sleeve section 2 on the side of the sleeve section 2 facing the rear of the vehicle, resulting in the extension section shown in the figure.
[0048] Since the main support may scrape the ground when kicked up, facing the rear of the vehicle, this embodiment also sets the connection between the extension section and the support surface 3 as a transitional connecting arc surface 5. Furthermore, the transitional connecting arc surface 5 bulges outwards, is larger in size, and more wear-resistant.
[0049] Based on this, the dimensions of the support surface 3 are made larger to increase the contact area with the ground; the edges of the support surface 3 are set as follows: Figure 2 The wedge shape shown facilitates the transfer of force from the main support 1 to the ground, resulting in higher overall stability. In this embodiment, the support surface 3 and the extension edge 4, based on the direction of the kicking action of the main support 1 and the parking characteristics, serve to protect, support, enhance strength, and compensate for height differences in the main support 1.
[0050] Example 2:
[0051] The difference from Embodiment 1 is that the foot sleeve used in this embodiment is a set structure.
[0052] like Figure 5 As shown, this is the structure of the main support 1 with base plates 102. Figure 3 and Figure 4As shown, a radially inserted foot sleeve is provided for this main bracket 1 with a foot plate 102. The sleeve section 2 of this foot sleeve is inserted into the foot plate 102 in a horizontal direction, and a fastener 6 is installed in the fastening hole 7 at the bottom of the foot plate 102 to install the foot sleeve on the foot plate 102.
[0053] Example 3:
[0054] This embodiment is an optimization based on Embodiment 1. Fasteners 6 are also provided at the bottom or side of the support surface 3 in Embodiment 1 to further lock the foot sleeve and support rod 101 to prevent aging and loosening caused by long-term use.
[0055] Example 4:
[0056] This embodiment is an optimization based on Embodiment 2. A support surface 3 is added to the bottom surface of the base sleeve 2 in Embodiment 2 where it contacts the ground. The support surface 3 serves to protect, resist wear, and supplement height. The support surface 3 can also extend upwards to form an extension edge 4, further adapting to the movement of the main support 1.
[0057] In this application, the sheath material used in all embodiments is manufactured using a one-piece injection molding process, employing PA6 (nylon plastic) + 15% GF (glass fiber). PA6+GF15 is a modified nylon material, in which 15% glass fiber is added to improve its mechanical properties and thermal stability. The density of PA6+GF15 is typically between 1.3 and 1.4 g / cm³, and it has the following properties:
[0058] (1) Thermal properties: Due to the addition of glass fiber, the heat distortion temperature (HDT) and Vicat softening point of PA6+GF15 are significantly improved. The HDT is typically nearly 50°C higher than that of pure A6, while the Vicat softening point may be nearly 20°C higher. These improvements enable PA6+GF15 to be used at higher temperatures.
[0059] (2) Mechanical properties: The mechanical properties of PA6+GF15 are significantly better than those of pure PA6. For example, its tensile strength and flexural strength can be increased by more than 20% and 30%, respectively. This reinforcing effect is mainly due to the addition of glass fibers, which act as a reinforcing phase in the material.
[0060] (3) Electrical properties: The electrical properties of PA6+GF15 are not much different from those of pure PA6. It has excellent insulation properties and can still maintain good electrical properties under high temperature and humid conditions.
[0061] (4) Chemical resistance: PA6+GF15 has good resistance to most common chemicals, but long-term exposure to strong acids, strong alkalis or high temperatures may have some impact on it.
[0062] (5) Processing performance: Due to the addition of glass fiber, PA6+GF15 is slightly more difficult to process than pure PA6.
[0063] The foot sleeves proposed in this application protect and compensate for the bottom of the support rod of the main bracket, which can solve the problem of left and right height difference caused by welding inconsistency factors during the production process, and increase the stability and reliability of the system.
[0064] In addition, the use of plastic material can effectively solve the problem of scratching low-hardness ground; the overall main support has fewer welding points, reducing the problems of welding deformation and incomplete forming of stamped parts.
[0065] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A sheath for a two-wheeled vehicle main support (1), characterized in that: The sleeve is detachably installed at the bottom of the main support (1). The sleeve includes a sleeve section (2) fitted on the main support (1) and a support surface (3) in contact with the ground. Based on the support rod (101) of the main support (1), the sleeve section (2) is coaxially fitted on the bottom of the support rod (101) or radially fitted on the bottom of the support rod (101).
2. The sheath of the two-wheeled vehicle main support (1) as described in claim 1, characterized in that: The support rod (101) is a straight rod, and the sleeve section (2) is coaxially sleeved at the bottom of the support rod (101).
3. The sheath of the two-wheeled vehicle main support (1) as described in claim 2, characterized in that: The support surface (3) of the socket section (2) extends upward from the bottom surface of the socket section (2) along the side wall of the socket section (2) to the top of the socket section (2).
4. The sheath of the two-wheeled vehicle main support (1) as described in claim 3, characterized in that: The support surface (3) forms an extension edge (4) towards the rear of the vehicle on the side wall of the connecting section (2).
5. The sheath of the two-wheeled vehicle main support (1) as described in claim 4, characterized in that: A transitional connecting arc surface (5) is formed between the extended edge (4) and the supporting surface (3).
6. The sheath of the two-wheeled vehicle main support (1) as described in claim 5, characterized in that: The transition connecting arc surface (5) protrudes to the side away from the socket section (2), and the extension edge (4) extends from the transition connecting arc surface (5) to the top of the socket section (2), and the thickness of the extension edge (4) decreases from the transition connecting arc surface (5) to the top of the socket section (2).
7. The sheath of the two-wheeled vehicle main support (1) as described in claim 4, characterized in that: The support surface (3) is concentric with the bottom surface of the socket section (2), and the area of the support surface (3) is larger than the area of the bottom surface of the socket section (2); the support surface is solid or has fastening holes.
8. The sheath of the two-wheeled vehicle main support (1) as described in claim 7, characterized in that: The chamfered edge of the support surface (3) forms a wedge surface (301).
9. The sheath of the two-wheeled vehicle main support (1) as described in claim 1, characterized in that: A base plate (102) is radially provided at the bottom end of the support rod (101), and a sleeve section (2) is sleeved on the base plate (102), and the sleeve section (2) and the base plate (102) are tightly connected.
10. The sheath of the two-wheeled vehicle main support (1) as described in claim 9, characterized in that: The support surface (3) extends on the side of the main support (1) that is kicked up, and the support surface (3) extends from the bottom surface of the socket section (2) to the top surface of the socket section (2).