Wheel and trolley
By designing the tire's sidewall rim to correspond with the rim's wrapped area in the wheel structure, the deformation problem of the rim during the secondary injection molding process is solved, resulting in more efficient production and a stronger tire connection, while also improving the wheel's aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN ROADZUP OUTDOOR PROD
- Filing Date
- 2024-11-11
- Publication Date
- 2026-05-12
AI Technical Summary
In the secondary injection molding process of existing non-pneumatic wheels, the injection surface of the tire cannot be well supported, which may cause the rim to deform and produce waste.
The wheel structure is designed with multiple circumferentially spaced wrapping surfaces protruding from the tire's side circumference. These surfaces are respectively attached to the outer end wall of the wrapped portion of the wheel spoke. The wrapping portions are flush with the side circumference of the wheel rim to enhance the support effect. The wheel spokes have staggered or symmetrical wrapped portions to improve the fixation strength and aesthetics.
It effectively prevents rim deformation during secondary injection molding, improves production efficiency, and enhances the bonding strength and aesthetics between the tire and the rim.
Smart Images
Figure CN122008734A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to wheels and handcarts, and particularly to non-pneumatic wheels and handcarts. Background Technology
[0002] Existing non-pneumatic wheels, such as CN220349416U, or, please refer to [reference needed]. Figure 1 The wheel includes a wheel rim and a non-pneumatic tire 1'. The wheel rim includes a hub 2', a rim 3', and spokes 4' that connect the hub 2' and the rim 3'. The two peripheral edges of the tire 1' are respectively adapted and connected to the two peripheral edges of the rim 3'. The two peripheral edges of the tire 1' form a continuous and complete circular ring structure. The wheel production process is as follows: first, the wheel rim is formed by a first injection molding, and then the tire is formed by a second injection molding on the wheel rim. Because the two peripheral edges of the tire form a continuous and complete circular ring structure and are connected to the two peripheral edges of the rim, the filling surface of the tire cannot be well supported during the second injection molding, which may cause the rim to deform and produce waste. Summary of the Invention
[0003] The present invention provides wheels and a handcart that overcome the shortcomings of wheels in the prior art.
[0004] One of the technical solutions adopted by the present invention to solve its technical problem is: a wheel, including a wheel rim and a non-pneumatic tire (1), the wheel rim including a hub (2), a rim (3) and spokes (4) that fix the hub (2) and the rim (3); the spokes (4) are provided with a wrapped position (41) fixed to the side periphery of the rim (3), and the wheel rim has a plurality of the wrapped positions (41) arranged circumferentially; the side periphery of the tire (1) is provided with a plurality of wrapped surfaces (11) arranged circumferentially; the tire (1) is mounted on the rim (3) and the plurality of wrapped surfaces (11) of the tire (1) are respectively mounted on the outer end wall of the plurality of wrapped positions (41) of the spokes (4).
[0005] In one embodiment: the outer end wall of the wrapped position (41) is flush with the side periphery of the rim (3).
[0006] In one embodiment: the outer end wall of the wrapped position (41) is recessed with a feeding groove (411), and the outer edge (111) of the wrapped surface (11) is located in the feeding groove (411).
[0007] In one embodiment: the outer end wall of the wrapped part (41) is provided with a buckle hole (412), and the wrapped surface (11) is provided with a buckle (112) adapted to be provided in the buckle hole (412).
[0008] In one embodiment: the tire (1) side periphery includes a first side edge (113) located between each two wrapping surfaces (11), and a second side edge (114) is connected between the first side edge (113) and the outer edge (111) of the wrapping surface (11); the first side edge (113) is connected to the side periphery of the rim (3), and the second side edge (114) is connected to the side of the wrapped position (41).
[0009] In one embodiment: the outer end wall of the wrapped position (41) is recessed with a feeding groove (411), and the two sides of the wrapped position (41) are recessed with feeding notches (413), which are connected to the feeding groove (411); the outer edge (111) of the wrapping surface (11) is located in the feeding groove (411), the first side edge (113) is connected to the side periphery of the rim (3) in a sleeve manner, and the second side edge (114) is connected to the feeding notch (413).
[0010] In one embodiment: the spoke (4) includes a spoke plate, which has an alternating concave-convex wave structure in the circumferential direction and has multiple convex surfaces (42) located on the left and right sides respectively. The multiple convex surfaces (42) located on the left and right sides are arranged alternately in the circumferential direction. The convex surfaces (42) located on the left and right sides are respectively fixed to the left and right periphery of the rim (3). The convex surfaces (42) are provided with the aforementioned wrapped positions (41).
[0011] In one embodiment: the spoke (4) includes a spoke plate, and the left and right end faces of the spoke plate are provided with a plurality of circumferentially spaced convex surfaces. The convex surfaces of the left and right end faces are respectively fixed to the left and right periphery of the rim (3). The convex surfaces are provided with the aforementioned wrapped position (41).
[0012] In one embodiment: the wheel spoke (4) includes a plurality of spokes, on which the aforementioned wrapped position (41) is provided.
[0013] In one embodiment: the left and right end walls of the spoke (4) are provided with the above-mentioned wrapped position (41), and the two sides of the tire (1) are provided with the above-mentioned wrapped surface (11).
[0014] In one embodiment: the wrapped positions (41) of the left and right end walls of the spokes (4) are arranged in an alternating manner in the circumferential direction.
[0015] In one embodiment, the wrapping positions (41) of the left and right end walls of the spoke (4) are symmetrically arranged.
[0016] In one embodiment: the hub (2) extends out of the spokes at both ends in the axial direction and is a protrusion (21), and a reinforcing plate (23) is fixed between the protrusion (21) and the convex surface (42).
[0017] In one embodiment: the convex surface (42) has a Z-shaped structure with an outer high and an inner low, and the wrapped position (41) is located on the outer high surface of the Z-shaped structure.
[0018] The second technical solution adopted by the present invention to solve its technical problem is: a handcart, which is provided with the aforementioned wheels.
[0019] Compared with the prior art, this technical solution has the following advantages:
[0020] The spokes have multiple circumferentially spaced wrapping positions, and the tire side circumference has multiple circumferentially spaced wrapping surfaces. The tire is mounted on the rim, and the multiple wrapping surfaces of the tire are mounted one-to-one with the outer end walls of the multiple wrapping positions on the spokes. During secondary injection molding, the tire's injection surface can be well supported, which can effectively prevent the rim from deforming during the secondary injection molding process, and also improve production efficiency. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] Figure 1 This is a schematic diagram of the structure of a wheel in the background technology.
[0023] Figure 2 This is a three-dimensional schematic diagram of the wheel in a specific embodiment, viewed from the front axis.
[0024] Figure 3 This is a three-dimensional schematic diagram of the wheel in a specific embodiment, viewed from the rear axis.
[0025] Figure 4 This is a top view of the wheel in a specific implementation.
[0026] Figure 5 yes Figure 4 A schematic diagram of the AA cross-section.
[0027] Figure 6 yes Figure 4 A schematic diagram of the BB cross-section.
[0028] Figure 7 This is a front view schematic diagram of the wheel in a specific implementation.
[0029] Figure 8 yes Figure 7 A schematic diagram of the CC cross-section.
[0030] Figure 9 yes Figure 7 DD cross-sectional schematic diagram.
[0031] Figure 10 This is one of the three-dimensional schematic diagrams of a wheel rim in a specific embodiment.
[0032] Figure 11 This is the second three-dimensional schematic diagram of the wheel rim in a specific implementation method.
[0033] Figure 12 This is a front view schematic diagram of the wheel rim in a specific embodiment.
[0034] Figure 13 yes Figure 12 A schematic diagram of the EE cross-section.
[0035] Figure 14 yes Figure 12 A schematic diagram of the FF cross-section.
[0036] Figure 15 This is one of the three-dimensional schematic diagrams of a tire according to a specific embodiment.
[0037] Figure 16 This is the second three-dimensional schematic diagram of a tire according to a specific implementation method.
[0038] Figure 17 This is a top view of the tire in a specific embodiment.
[0039] Figure 18 yes Figure 17 A schematic diagram of the GG cross-section.
[0040] Figure 19 This is a front view schematic diagram of a tire according to a specific embodiment.
[0041] Figure 20 yes Figure 19 A schematic diagram of the HH cross-section.
[0042] Figure 21 yes Figure 19 Schematic diagram of section II.
[0043] Label Explanation:
[0044] Tire 1, wrapping surface 11, outer edge 111, inverted 112, first side edge 113, second side edge 114;
[0045] 2. Hub 21. Extension 21. Bushing 22. Reinforcing plate 23;
[0046] Rim 3;
[0047] 4. Spokes, 41. Wrapped position, 411. Feeding groove, 412. Buckle hole, 413. Feeding notch, 42. Convex surface. Detailed Implementation
[0048] Please refer to Figures 2 to 21The wheel includes a wheel rim and a non-pneumatic tire 1. The wheel rim includes a hub 2, a rim 3, and spokes 4 that connect the hub 2 and the rim 3. The spokes 4 have a wrapped position 41 fixed to the periphery of the rim 3, and the wheel rim has a plurality of circumferentially spaced wrapped positions 41. The outer end wall of the wrapped position 41 is flush with the periphery of the rim 3. The tire 1 has a plurality of circumferentially spaced wrapping surfaces 11 protruding from its periphery. The tire 1 is mounted on the rim 3, and the plurality of wrapping surfaces 11 of the tire 1 are mounted one-to-one with the outer end wall of the plurality of wrapped positions 41 of the spokes 4. The wrapped positions 41 can provide good support for the filling surface of the tire during secondary injection molding.
[0049] The outer end wall of the wrapped portion 41 is recessed with a feeding groove 411 and a buckle hole 412; the outer edge 111 of the wrapping surface 11 is located in the feeding groove 411 and the wrapping surface 11 is provided with a buckle 112 adapted to the soft rubber provided in the buckle hole 412; the secure connection between the tire and the wheel rim is improved by "the outer edge 111 is located in the feeding groove 411" and / or "buckle".
[0050] Furthermore, the two sides of the wrapped area 41 are recessed to form a feeding notch 413, which is connected to the feeding groove 411; the periphery of the tire 1 includes a first side edge 113 located between each two wrapped surfaces 11 and extending towards the other periphery, and a second side edge 114 is connected between the first side edge 113 and the outer edge 111 of the wrapped surface 11; the outer edge 111 of the wrapped surface 11 is located in the feeding groove 411, the first side edge 113 is connected to the periphery of the rim 3 in a sleeve manner, and the second side edge 114 is connected to the feeding notch 413; thus further improving the good support performance, the firmness of the connection, and the aesthetics.
[0051] The spoke 4 includes a spoke plate, which has an alternating concave-convex wave structure in the circumferential direction and has multiple convex surfaces 42 located on the left and right sides (corresponding to the front and back directions in the figure). The multiple convex surfaces 42 located on the left and right sides are arranged alternately in the circumferential direction. The convex surfaces 42 located on the left and right sides are respectively fixed to the left and right periphery of the rim 3. Each convex surface 42 is provided with the aforementioned wrapped position 41. The wrapped positions 41 on the left and right end walls of the spoke 4 are staggered in the circumferential direction. The structure is simple, stable, reliable, and uses less material. Both the left and right sides have support for the rubber-filled surface of the tire.
[0052] The wheel hub 2 extends 21 from both ends of the spoke plate, and a reinforcing plate 23 is fixed between the extension 21 and the convex surface 42. The convex surface 42 has a Z-shaped structure with a higher outer surface and a lower inner surface, and the wrapped part 41 is located on the higher outer surface of the Z-shaped structure. These two structures enhance the strength of the wheel rim, resulting in a unique wheel hub design and a beautiful and distinctive appearance. Both ends of the wheel hub 2 are provided with bushings 22 for connecting the axle.
[0053] The aforementioned wheels can be applied to vehicles such as strollers and children's vehicles.
[0054] As needed, the structure of the spoke plate can also be: the left and right end faces of the spoke plate are provided with a plurality of circumferentially spaced convex surfaces, the convex surfaces of the left and right end faces are respectively fixed to the left and right periphery of the rim 3, and the aforementioned wrapped position 41 is provided on the convex surface.
[0055] Depending on the need, the structure of the spoke 4 can also be: including multiple spokes spaced apart circumferentially, with the aforementioned wrapped position 41 provided on the spokes.
[0056] The above-mentioned wheel production method includes: first injection molding of the wheel rim; placing the wheel rim into a mold, and second injection molding of the tire to firmly fix the tire onto the wheel rim.
[0057] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.
Claims
1. A wheel, comprising a wheel rim and a non-pneumatic tire (1), the wheel rim comprising a hub (2), a rim (3) and spokes (4) fixing the hub (2) and the rim (3); characterized in that: The spoke (4) has a wrapped position (41) fixed to the side periphery of the rim (3), and the wheel rim has a plurality of the wrapped positions (41) arranged circumferentially; the side periphery of the tire (1) is provided with a plurality of wrapped surfaces (11) arranged circumferentially; the tire (1) is mounted on the rim (3) and the plurality of wrapped surfaces (11) of the tire (1) are mounted one-to-one on the outer end wall of the plurality of wrapped positions (41) of the spoke (4).
2. The wheel according to claim 1, characterized in that: The outer end wall of the wrapped position (41) and the side perimeter of the rim (3) are arranged flush.
3. The wheel according to claim 1, characterized in that: The outer end wall of the wrapped part (41) is recessed with a feeding groove (411), and the outer edge (111) of the wrapped surface (11) is located in the feeding groove (411).
4. The wheel according to claim 1, characterized in that: The outer end wall of the wrapped part (41) is recessed with a buckle hole (412), and the wrapped surface (11) is provided with a buckle (112) adapted to the buckle hole (412).
5. The wheel according to claim 1, characterized in that: The tire (1) has a first side edge (113) located between each two wrapping surfaces (11), and a second side edge (114) is connected between the first side edge (113) and the outer edge (111) of the wrapping surface (11); the first side edge (113) is connected to the side periphery of the rim (3), and the second side edge (114) is connected to the side of the wrapped position (41).
6. The wheel according to claim 5, characterized in that: The outer end wall of the wrapped position (41) is recessed with a feeding groove (411), and the two sides of the wrapped position (41) are recessed with feeding notches (413), which are connected to the feeding groove (411); the outer edge (111) of the wrapping surface (11) is located in the feeding groove (411), the first side edge (113) is connected to the side periphery of the rim (3) in a sleeve manner, and the second side edge (114) is connected to the feeding notch (413).
7. The wheel according to claim 1, characterized in that: The spoke (4) includes a spoke plate, which has an alternating concave-convex wave structure in the circumferential direction and has multiple convex surfaces (42) located on the left and right sides respectively. The multiple convex surfaces (42) located on the left and right sides are arranged alternately in the circumferential direction. The convex surfaces (42) located on the left and right sides are respectively fixed to the left and right periphery of the rim (3). The convex surfaces (42) are provided with the aforementioned wrapped positions (41).
8. The wheel according to claim 1, characterized in that: The spoke (4) includes a spoke plate, and the left and right end faces of the spoke plate are provided with a plurality of circumferentially spaced convex surfaces. The convex surfaces of the left and right end faces are respectively fixed to the left and right periphery of the rim (3). The convex surfaces are provided with the aforementioned wrapped position (41).
9. The wheel according to claim 1, characterized in that: The spoke (4) includes multiple spokes, on which the aforementioned wrapped position (41) is provided.
10. The wheel according to claim 1, characterized in that: The spokes (4) have the aforementioned wrapped positions (41) on the left and right end walls, and the tire (1) has the aforementioned wrapped surfaces (11) on both sides of its periphery.
11. The wheel according to claim 10, characterized in that: The wrapping positions (41) on the left and right end walls of the spokes (4) are arranged in an alternating manner in the circumferential direction.
12. The wheel according to claim 10, characterized in that: The wrapping positions (41) on the left and right end walls of the spokes (4) are symmetrically arranged.
13. The wheel according to claim 7, characterized in that: The hub (2) extends out of the spokes at both ends along the axial direction and is a protrusion (21). A reinforcing plate (23) is fixed between the protrusion (21) and the convex surface (42).
14. The wheel according to claim 13, characterized in that: The convex surface (42) has a Z-shaped structure with an outer high and an inner low, and the wrapped position (41) is located on the outer high surface of the Z-shaped structure.
15. A handcart, characterized in that: It is equipped with the wheel as described in claim 1.