Wheel and trolley

Abstract

The utility model discloses a wheel and a handcart, the wheel comprises a wheel rim and a non-inflatable tire (1), the wheel rim comprises a hub (2), a rim (3) and a spoke (4) fixedly connected with the hub (2) and the rim (3); the spoke (4) is provided with wrapped positions (41) fixedly connected to the side periphery of the rim (3), and the wheel rim is provided with a plurality of wrapped positions (41) arranged at intervals in the circumferential direction. A plurality of wrapping surfaces (11) which are arranged at intervals in the circumferential direction are convexly arranged on the side periphery of the tire (1); the tire (1) is connected to the rim (3), and the multiple wrapping faces (11) of the tire (1) are connected to the outer end walls of the multiple wrapped positions (41) of the spoke (4) in a one-to-one correspondence mode. Compared with the prior art, the secondary injection molding device has the advantages that during secondary injection molding production, the glue pouring surface of the tire can be well supported, the rim can be effectively prevented from deforming in the secondary injection molding process, and meanwhile, the production efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to a wheel and a cart, in particular to a non-pneumatic wheel and a cart. Background Art

[0002] Existing non-pneumatic wheels, such as CN220349416U, or, please refer to Figure 1 The wheel comprises a wheel rim and a non-pneumatic tire 1'. The wheel rim includes a hub 2', a rim 3', and spokes 4' that securely connect the hub 2' and the rim 3'. The tire 1' has two peripheral edges that are respectively adapted to be connected to the peripheral edges of the rim 3'. The peripheral edges of the tire 1' form a continuous, complete circular structure. The wheel production process involves first performing a first injection molding process to form the wheel rim, and then performing a second injection molding process on the wheel rim to form the tire. Because the peripheral edges of the tire form a continuous, complete circular structure and are connected to the peripheral edges of the rim, the rubberized surface of the tire cannot be properly supported during the second injection molding process, which may cause the rim to deform and result in waste. Utility Model Content

[0003] The utility model provides a wheel and a trolley, which overcome the shortcomings of wheels in the background technology.

[0004] One of the technical solutions adopted by the utility model to solve its technical problems is: a wheel, comprising a wheel rim and a non-inflated tire (1), the wheel rim comprising a hub (2), a rim (3) and a spoke (4) fixedly connected to the hub (2) and the rim (3); the spoke (4) is provided with a wrapped position (41) fixedly connected to the side periphery of the rim (3), and the wheel rim has a plurality of the above-mentioned wrapped positions (41) arranged at intervals in the circumferential direction; the side periphery of the tire (1) is convexly provided with a plurality of wrapped surfaces (11) arranged at intervals in the circumferential direction; the tire (1) is attached to the rim (3), and the plurality of wrapped surfaces (11) of the tire (1) are attached to the outer end walls of the plurality of wrapped positions (41) of the spoke (4) in a one-to-one correspondence.

[0005] In one embodiment, the outer end wall of the wrapped portion (41) and the side periphery of the rim (3) are arranged flush.

[0006] In one embodiment, the outer end wall of the wrapped portion (41) is recessed with a supply groove (411), and the outer end edge (111) of the wrapping surface (11) is disposed in the supply groove (411).

[0007] In one embodiment, the outer end wall of the wrapped portion (41) is recessed with an undercut hole (412), and the wrapping surface (11) is provided with an undercut (112) adapted to be arranged in the undercut hole (412).

[0008] In one embodiment, the side periphery of the tire (1) 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 portion (41).

[0009] In one embodiment, the outer end wall of the wrapped portion (41) is recessed with a loading groove (411), and both sides of the wrapped portion (41) are recessed with loading notches (413), and the loading notches (413) and the loading groove (411) are connected; the outer end edge (111) of the wrapping surface (11) is disposed in the loading groove (411), the first side edge (113) is connected to the side periphery of the rim (3) in a sleeve-type manner, and the second side edge (114) is connected to the loading notch (413).

[0010] In one embodiment, the wheel spoke (4) includes a wheel spoke plate, which has a wave structure with alternating concave and convex shapes in the circumferential direction and has a plurality of convex surfaces (42) respectively located on the left and right sides, and the plurality of convex surfaces (42) respectively located on the left and right sides are arranged alternately in the circumferential direction; the convex surfaces (42) respectively located on the left and right sides are respectively fixed to the left and right peripheral edges of the rim (3), and the convex surfaces (42) are provided with the above-mentioned wrapped position (41).

[0011] In one embodiment, the wheel spoke (4) includes a wheel spoke plate, and the left and right end surfaces of the wheel spoke plate are both provided with a plurality of convex surfaces arranged at intervals in the circumferential direction. The convex surfaces of the left and right end surfaces are respectively fixed to the left and right peripheral edges of the rim (3), and the convex surfaces are provided with the above-mentioned wrapped position (41).

[0012] In one embodiment, the wheel spoke (4) includes a plurality of spokes, and the spokes are provided with the above-mentioned wrapped portion (41).

[0013] In one embodiment, the left and right end walls of the wheel spoke (4) are provided with the aforementioned wrapped portion (41), and the periphery of both sides of the tire (1) are provided with the aforementioned wrapped surface (11).

[0014] In one embodiment, the wrapped portions (41) of the left and right end walls of the spokes (4) are circumferentially staggered.

[0015] In one embodiment, the wrapped portions (41) of the left and right end walls of the spoke (4) are symmetrically arranged.

[0016] In one embodiment, the wheel hub (2) has spoke plates extending from both axial ends thereof to form extension portions (21), and a reinforcement sheet (23) is fixedly provided between the extension portion (21) and the convex surface (42).

[0017] In one embodiment, the convex surface (42) is a Z-shaped structure with a high outer surface and a low inner surface, and the wrapped portion (41) is located on the outer high surface of the Z-shaped structure.

[0018] The second technical solution adopted by the utility model to solve the technical problem is: a handcart provided with the above-mentioned wheels.

[0019] Compared with the background technology, this technical solution has the following advantages:

[0020] The spoke is provided with multiple wrapped positions arranged at intervals in the circumferential direction, and the side periphery of the tire is convexly provided with multiple wrapped surfaces arranged at intervals in the circumferential direction. The tire is attached to the rim and the multiple wrapped surfaces of the tire are attached to the multiple wrapped outer end walls of the spoke in a one-to-one correspondence. During the secondary injection molding production, the glue filling surface of the tire can be well supported, which can effectively prevent the rim from deforming during the secondary injection molding process, and also improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of a wheel of background technology.

[0023] Figure 2 It is a three-dimensional schematic diagram of a wheel according to a specific embodiment, viewed from the forward axis.

[0024] Figure 3 It is a three-dimensional schematic diagram of a wheel of a specific embodiment viewed from the back of the axis.

[0025] Figure 4 1 is a schematic top view of a wheel according to a specific embodiment.

[0026] Figure 5 yes Figure 4 AA cross-sectional diagram of .

[0027] Figure 6 yes Figure 4 BB cross-section diagram.

[0028] Figure 7 It is a front schematic view of a wheel according to a specific embodiment.

[0029] Figure 8 yes Figure 7 Schematic diagram of CC cross section.

[0030] Figure 9 yes Figure 7 DD cross-section diagram.

[0031] Figure 10 It is one of the three-dimensional schematic diagrams of the wheel rim of a specific embodiment.

[0032] Figure 11 This is the second stereoscopic schematic diagram of the wheel rim according to the specific embodiment.

[0033] Figure 12 It is a front view schematic diagram of a wheel rim of a specific embodiment.

[0034] Figure 13 yes Figure 12 EE cross-sectional diagram.

[0035] Figure 14 yes Figure 12 FF cross-sectional diagram.

[0036] Figure 15 It is one of the three-dimensional schematic diagrams of a tire according to a specific embodiment.

[0037] Figure 16 This is the second schematic three-dimensional diagram of a tire according to a specific embodiment.

[0038] Figure 17 1 is a schematic top view of a tire according to a specific embodiment.

[0039] Figure 18 yes Figure 17 Schematic diagram of the GG cross section.

[0040] Figure 19 It is a schematic front view of a tire according to a specific embodiment.

[0041] Figure 20 yes Figure 19 Schematic diagram of the HH cross section.

[0042] Figure 21 yes Figure 19 Schematic diagram of section II.

[0043] Description of labels:

[0044] Tire 1, wrapping surface 11, outer edge 111, undercut 112, first side edge 113, second side edge 114;

[0045] Hub 2, extension 21, sleeve 22, reinforcement sheet 23;

[0046] Rim 3;

[0047] The spoke 4 , the wrapped portion 41 , the installation groove 411 , the undercut hole 412 , the installation notch 413 , and the convex surface 42 . DETAILED DESCRIPTION

[0048] Please refer to Figures 2 to 21The wheel comprises a wheel rim and a non-inflated tire 1, the wheel rim comprising a hub 2, a rim 3 and a spoke 4 fixedly connected to the hub 2 and the rim 3; the spoke 4 is provided with a wrapped position 41 fixedly connected to the side periphery of the rim 3, and the wheel rim has a plurality of the above-mentioned wrapped positions 41 arranged at intervals in the circumferential direction, and the outer end wall of the wrapped position 41 is arranged flush with the side periphery of the rim 3; the side periphery of the tire 1 is convexly provided with a plurality of circumferentially spaced wrapping surfaces 11; the tire 1 is attached to the rim 3 and the plurality of wrapping surfaces 11 of the tire 1 are attached one by one to the outer end walls of the plurality of wrapped positions 41 of the spoke 4, so that the glue filling surface of the tire during secondary injection molding can be well supported by the wrapped position 41.

[0049] The outer end wall of the wrapped position 41 is recessed with a supply groove 411, and the outer end wall of the wrapped position 41 is recessed with an undercut hole 412; the outer end edge 111 of the wrapping surface 11 is arranged in the supply groove 411, and the wrapping surface 11 is provided with an undercut 112 of soft rubber adapted to be arranged in the undercut hole 412; the "outer end edge 111 is arranged in the supply groove 411" and / or "undercut" improves the firmness of the connection between the tire and the wheel rim.

[0050] Furthermore, both sides of the wrapped position 41 are recessed to form loading notches 413, and the loading notches 413 are connected to the loading groove 411; the side periphery of the tire 1 includes a first side edge 113 located between every two wrapping surfaces 11 and extending toward the other periphery, and a second side edge 114 is connected between the first side edge 113 and the outer end edge 111 of the wrapping surface 11; the outer end edge 111 of the wrapping surface 11 is arranged in the loading groove 411, and the first side edge 113 is connected to the side periphery of the rim 3 in a sleeve-type manner, and the second side edge 114 is connected to the loading notch 413; thereby further improving the good supporting performance, firm fixing performance, and aesthetics.

[0051] The wheel spoke 4 includes a wheel spoke plate, which has a wave structure with alternating concave and convex shapes in the circumferential direction and has a plurality of convex surfaces 42 respectively located on the left and right sides (corresponding to the positive and negative directions in the figure), and the plurality of convex surfaces 42 respectively located on the left and right sides are arranged alternately in the circumferential direction; the convex surfaces 42 respectively located on the left and right sides are respectively fixed to the left and right side peripheries of the rim 3, and the convex surfaces 42 are provided with the above-mentioned wrapped positions 41; the wrapped positions 41 of the left and right end walls of the wheel spoke 4 are staggered in the circumferential direction; the structure is simple, stable, reliable, and saves materials, and both the left and right sides have or can support the rubber-filled surface of the tire.

[0052] The hub 2 has spokes extending from both ends of the hub 2, forming extensions 21. A reinforcement plate 23 is fixed between the extension 21 and the convex surface 42. The convex surface 42 is a Z-shaped structure with a high outer edge and a low inner edge. The enclosed portion 41 is located on the outer height of the Z-shaped structure. These two structures enhance the wheel rim's strength, resulting in a unique hub design and an aesthetically pleasing appearance. Axle sleeves 22 are located at each end of the hub 2 for connecting to the axle.

[0053] The wheels can be applied to vehicles such as carts and baby carriages.

[0054] As needed, the structure of the spoke plate can also be adopted: the left and right end faces of the spoke plate are both provided with multiple circumferentially spaced convex surfaces, the convex surfaces of the left and right end faces are respectively fixed to the left and right side peripheries of the rim 3, and the convex surfaces are provided with the above-mentioned wrapped position 41.

[0055] As required, the structure of the spoke 4 may also be: comprising a plurality of spokes spaced apart in the circumferential direction, each of the spokes being provided with the aforementioned wrapped portion 41 .

[0056] The production method of the wheel comprises: first injection molding of the wheel rim; placing the wheel rim in a mold; and second injection molding of the tire to firmly fix the tire on the wheel rim.

[0057] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the patent scope of the present invention 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), wherein the wheel rim comprises a hub (2), a rim (3) and spokes (4) fixedly connecting the hub (2) and the rim (3); characterized in that: The wheel spoke (4) is provided with a wrapped portion (41) fixedly connected to the side periphery of the wheel rim (3), and the wheel rim has a plurality of the wrapped portions (41) arranged at intervals in the circumferential direction; the tire (1) is provided with a plurality of wrapped surfaces (11) arranged at intervals in the circumferential direction on the side periphery; the tire (1) is attached to the wheel rim (3), and the plurality of wrapped surfaces (11) of the tire (1) are attached to the outer end walls of the plurality of wrapped portions (41) of the wheel spoke (4) in a one-to-one correspondence.

2. A wheel according to claim 1, characterized in that: The outer end wall of the wrapped portion (41) and the side periphery of the rim (3) are arranged flush.

3. The wheel according to claim 1, characterized in that: The outer end wall of the wrapped portion (41) is recessed with a supply groove (411), and the outer end edge (111) of the wrapping surface (11) is arranged in the supply groove (411).

4. The wheel according to claim 1, characterized in that: The outer end wall of the wrapped portion (41) is recessed with an undercut hole (412), and the wrapping surface (11) is provided with an undercut (112) adapted to be arranged in the undercut hole (412).

5. The wheel according to claim 1, characterized in that: The side periphery of the tire (1) includes a first side edge (113) located between each two wrapping surfaces (11), and a second side edge (114) connected between the first side edge (113) and the outer end 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. A wheel according to claim 5, characterized in that: The outer end wall of the wrapped portion (41) is recessed with a loading groove (411), and both sides of the wrapped portion (41) are recessed with loading notches (413), and the loading notches (413) and the loading groove (411) are connected; the outer end edge (111) of the wrapping surface (11) is arranged in the loading groove (411), the first side edge (113) is connected to the side periphery of the rim (3) in a sleeve-type manner, and the second side edge (114) is connected to the loading notch (413).

7. The wheel according to claim 1, characterized in that: The wheel spoke (4) comprises a wheel spoke plate, which presents a wave structure with alternating concave and convex shapes in the circumferential direction and has a plurality of convex surfaces (42) respectively located on the left and right sides, wherein the plurality of convex surfaces (42) respectively located on the left and right sides are arranged alternately in the circumferential direction; the convex surfaces (42) respectively located on the left and right sides are respectively fixed to the left and right peripheral edges of the rim (3), and the convex surfaces (42) are provided with the above-mentioned wrapped positions (41).

8. The wheel according to claim 1, characterized in that: The wheel spoke (4) comprises a wheel spoke plate, the left and right end faces of which are both provided with a plurality of convex surfaces spaced apart in the circumferential direction, the convex surfaces of the left and right end faces being fixedly connected to the left and right peripheral edges of the rim (3), respectively, and the above-mentioned wrapped portion (41) is provided on the convex surfaces.

9. The wheel according to claim 1, characterized in that: The wheel spoke (4) comprises a plurality of spokes, and the spokes are provided with the above-mentioned wrapped positions (41).

10. The wheel according to claim 1, characterized in that: The left and right end walls of the wheel spoke (4) are both provided with the aforementioned wrapped portion (41), and the periphery of both sides of the tire (1) are both provided with the aforementioned wrapped surface (11).

11. The wheel according to claim 10, characterized in that: The wrapped portions (41) of the left and right end walls of the spokes (4) are circumferentially staggered.

12. The wheel according to claim 10, characterized in that: The wrapped portions (41) of the left and right end walls of the spoke (4) are symmetrically arranged.

13. The wheel according to claim 7, characterized in that: The spoke plates extend outwards from both axial ends of the hub (2) to form extension portions (21). A reinforcing sheet (23) is fixedly provided between the extension portion (21) and the convex surface (42).

14. A wheel according to claim 13, characterized in that: The convex surface (42) is in a Z-shaped structure with an outer height and an inner bottom, and the wrapped portion (41) is arranged on the outer height surface of the Z-shaped structure.

15. A trolley, characterized in that: It is provided with a wheel according to claim 1 .

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