Wheel for wheelchair

Abstract

The utility model discloses a wheel for a wheelchair, which comprises a tire, a hand push ring and a hub, and the hub sequentially comprises a rim, a spoke and a wheel axle from outside to inside; the spoke comprises three spokes, one side face of each spoke is provided with a protruding part, and the other side face of each spoke is provided with a concave part corresponding to the protruding part in position. A reinforcing rib plate is arranged on the concave part, and the end part of the reinforcing rib plate is connected with the outer side surface of the axle; according to the hub, the three spokes are arranged for supporting, and the problems existing in traditional multi-spoke supporting are effectively solved; meanwhile, the hub is of an aluminum alloy integrally-formed structure, and each spoke is provided with a protruding part, a concave part and a reinforcing rib plate structure, so that the impact load bearing capacity of the wheel is further improved, the stability of the wheel is effectively improved, the later maintenance cost is greatly reduced, and the service life of the wheel is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, and more specifically, particularly relates to a wheel for a wheelchair. Background Art

[0002] A wheelchair is a tool for walking and nursing, suitable for people with difficulty walking, such as the disabled, the sick, the elderly and the infirm. Wheelchairs are mainly divided into manual wheelchairs and electric wheelchairs. Manual wheelchairs generally include front wheels and rear wheels, of which the rear wheels bear the main weight, and their strength, rigidity and stability directly affect the safety of the wheelchair. In existing wheelchairs, the rear wheels mostly adopt a structure composed of a rim and multiple steel spokes. Wheelchair wheels used to bear a large amount of weight usually have a large number of spokes, some with as many as ten. Spoke wheels with this structure are prone to rust and loosen over time, and their strength and stability need to be improved. Utility Model Content

[0003] The utility model provides a wheel for a wheelchair to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a wheel for a wheelchair, comprising a tire, a hand push ring and a wheel hub, wherein the wheel hub comprises a wheel rim, a wheel spoke and a wheel axle from the outside to the inside in sequence; a plurality of mounting holes are arranged at equal intervals on the wheel spoke, the hand push ring is provided with a connecting structure that matches the mounting holes, and is connected to the mounting holes through the connecting structure;

[0004] The wheel spokes include three spokes, one side of the spokes is provided with a protruding portion, and the other side is provided with a recessed portion corresponding to the position of the protruding portion; a reinforcing rib plate is provided on the recessed portion, and the end of the reinforcing rib plate is connected to the outer side of the wheel axle; a side reinforcing rib is provided at the connection between two adjacent spokes, and the end of the side reinforcing rib is connected to the outer side of the wheel axle;

[0005] A through slot is arranged at the center of the wheel shaft, and a plurality of connecting holes are arranged at one end.

[0006] Preferably, the connection between adjacent spokes is an arc-shaped curved surface, and the spokes and the rim are connected in an arc-shaped transition.

[0007] Preferably, the cross section of the spoke is a triangular structure, and the three sides of the triangular structure are all arc-shaped sides.

[0008] Preferably, the protrusion is a pyramid structure, and the bottom of the pyramid structure is an arc structure.

[0009] Preferably, the reinforcing rib plate is arranged on the central axis of the spoke, and its structure is a triangular structure; the structure of the side reinforcing rib is a triangular structure, and the angle between the side reinforcing rib and the reinforcing rib plate is 60°.

[0010] Preferably, the number of the connection holes is six, and the six connection holes are distributed on the periphery of the wheel axle in a circular array structure.

[0011] Preferably, the wheel hub is an integrally formed structure.

[0012] Preferably, the wheel hub is made of aluminum alloy material.

[0013] Preferably, the mounting hole is a through hole with an internal thread, one end of the through hole is flush with one side of the spoke, and the other end protrudes from the other side of the spoke, and the protruding direction is the same as that of the protruding portion.

[0014] Preferably, the wheel rim is provided with an air nozzle hole, and the wheel spoke is provided with an air nozzle fixing groove matching with the air nozzle hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the wheel of the present invention is composed of a tire, a hand push ring and a hub, wherein the hub is supported by three spokes, which effectively improves the problems existing in the traditional multi-spoke support; at the same time, the hub adopts an aluminum alloy one-piece molding structure, and each spoke is provided with a protrusion, a recessed portion and a reinforcing rib plate structure, which further improves the wheel's ability to withstand impact loads, effectively improves the wheel's stability, greatly reduces the subsequent maintenance costs, and increases the wheel's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front structural diagram of a wheel for a wheelchair according to an embodiment of the utility model;

[0017] Figure 2 This is a back structural diagram of a wheel for a wheelchair according to an embodiment of the utility model;

[0018] Figure 3 A front view of a wheel for a wheelchair according to an embodiment of the utility model;

[0019] Figure 4 A rear view of a wheel for a wheelchair according to an embodiment of the utility model;

[0020] exist Figures 1 to 4 In the figure, the corresponding relationship between the names of the components and the numbers of the drawings is as follows:

[0021] 1--wheel rim, 2--spoke, 21--mounting hole, 22--spoke, 221--protrusion, 222--recess, 223--reinforcement rib plate, 23--side reinforcement rib, 24--air nozzle fixing groove, 3--wheel axle, 31--through groove, 32--connection hole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figures 1 to 4 The utility model provides a wheel for a wheelchair, comprising a tire, a push ring and a wheel hub, wherein the wheel hub comprises a wheel rim 1, a wheel spoke 2 and a wheel axle 3 from the outside to the inside; a plurality of mounting holes 21 are arranged at equal intervals on the wheel spoke 2, and the push ring is provided with a connection structure matched with the mounting hole 21, and is connected with the mounting hole 21 through the connection structure;

[0026] The wheel spoke 2 includes three spokes 22, one side of the spoke 22 is provided with a protruding portion 221, and the other side is provided with a recessed portion 222 corresponding to the position of the protruding portion 221; a reinforcing rib plate 223 is provided on the recessed portion 222, and the end of the reinforcing rib plate 223 is connected to the outer side of the wheel axle 3; a side reinforcing rib 23 is provided at the connection between two adjacent spokes 22, and the end of the side reinforcing rib 23 is connected to the outer side of the wheel axle 3;

[0027] The center of the wheel shaft 3 is provided with a through slot 31 , and one end is provided with a plurality of connecting holes 32 .

[0028] In the embodiment of the utility model, the wheel is composed of a tire, a push ring and a wheel hub, wherein the tire is mounted on the surface of the wheel hub, the push ring is mounted on the side of the wheel hub, a plurality of mounting holes 21 are provided on the wheel hub, and the wheel hub is connected to the push ring through the mounting holes 21. The surface of the wheel rim 1 of this embodiment is provided with an annular groove for mounting the tire, the inner ring of the wheel rim 1 is connected to the spoke 2, the spoke 2 adopts a three-spoke structure, three spokes 22 are evenly distributed in the wheel rim 1, the other ends of the three spokes 22 are connected to the wheel axle 3, the end of the wheel axle 3 is provided with a petal-shaped connecting hole 32, and is connected to the main body of the wheelchair through the connecting hole 32 and the through groove 31.

[0029] The spoke 2 in this embodiment is a plate-like structure, which is thin as a whole, can reduce weight, and control the volume of the wheel. In order to improve the strength of the spoke 22, this embodiment is provided with a protruding portion 221 of a protruding structure on one side of the spoke 22, and a corresponding concave portion 222 on the other side. The mechanical properties of the spoke 22 are improved by the concave-convex plate structure, and it has higher bending rigidity and strength and stronger reliability than an ordinary basic flat plate. In addition, a reinforcing rib plate 223 is also provided in the concave portion 222, and the strength of the spoke 22 is strengthened by the reinforcing rib plate 223, and the rigidity is increased to prevent the spoke 22 from being deformed and twisted.

[0030] Preferably, the connection between adjacent spokes 22 is an arc-shaped curved surface, and the spokes 22 are connected to the rim 1 by an arc-shaped transition. In this embodiment, the connection between the three spokes 22 and the rim 1 adopts an arc-shaped transition, which not only improves the aesthetics, but also makes the connection surface between the spokes 22 and the rim 1 larger than the traditional structure, thereby improving the connection strength and stability.

[0031] Preferably, the cross section of the spoke 2 is a triangular structure, and the three sides of the triangular structure are all arc-shaped sides.

[0032] Preferably, the protrusion 221 is a pyramid structure, and the bottom of the pyramid structure is an arc structure. In this embodiment, the protrusion 221 is a pyramid structure, one side edge is a long side, and the other two side edges are short sides. The sides of the bottom are arc sides to fit the arc structure of the side of the spoke 22.

[0033] Preferably, the reinforcing rib plate 223 is arranged on the central axis of the spoke 22, and its structure is a triangular structure; the structure of the side reinforcing rib 23 is a triangular structure, and the angle between the side reinforcing rib 23 and the reinforcing rib plate 223 is 60°. In this embodiment, the reinforcing rib plate 223 and the reinforcing rib strips are respectively centered on the axis of the axle 3 and are evenly spaced around the axle 3.

[0034] Preferably, the number of the connection holes 32 is six, and the six connection holes 32 are distributed on the periphery of the wheel axle 3 in a circular array structure.

[0035] Preferably, the wheel hub is an integrally formed structure. In this embodiment, the wheel hub adopts an integrally formed structure, without riveting or welding, and does not need to be assembled by assembling the wheel axle 3 and the wheel spoke 2, thereby ensuring the bonding strength of the wheel axle 3, the wheel spoke 2 and the wheel rim 1, which helps to further increase the strength of the wheel and ensure the stability of each functional component. In addition, the integrally formed structure is also easier to control the accuracy through mold optimization, which simplifies the production process and reduces the production cost.

[0036] Preferably, the wheel hub is made of aluminum alloy. Further, the wheel hub in this embodiment can be made of magnesium-aluminum alloy.

[0037] Preferably, the mounting hole 21 is a through hole with an internal thread, one end of the through hole is flush with one side of the spoke 2, and the other end protrudes from the other side of the spoke 2, and the protruding direction is the same as the protruding direction of the protruding portion 221. In this embodiment, the mounting hole 21 is an internal threaded hole, and the hand push ring and the mounting hole 21 can be connected by a metal rod with a hole, and the metal rod is used to limit the distance, and then a bolt is set on the hand push ring and passed through the metal rod and threadedly connected to the mounting hole 21, which is very convenient to install. Compared with the traditional tapping installation method, in order to facilitate tapping installation, the wheel needs to reserve a certain thickness, which makes the wheel very thick. The mounting hole 21 in this embodiment is relatively thick, and an internal threaded hole can be set. The length of the metal rod can be arbitrarily selected, and the installation is more flexible, which also helps to reduce the overall weight of the wheelchair and achieve lightweight wheelchairs.

[0038] Preferably, the wheel rim 1 is provided with a valve hole, and the spoke 2 is provided with a valve fixing groove 24 that matches the valve hole. In order to prevent the valve from being deformed due to collision during use, the valve fixing groove 24 is provided in this embodiment, and the valve is installed in the valve fixing groove 24, so as to reduce deformation of the valve during use and increase the service life.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows: the wheel of the present invention is composed of a tire, a hand push ring and a hub, wherein the hub is supported by three spokes, which effectively improves the problems existing in the traditional multi-spoke support; at the same time, the hub adopts an aluminum alloy one-piece molding structure, and each spoke is provided with a protrusion, a recessed portion and a reinforcing rib plate structure, which further improves the wheel's ability to withstand impact loads, effectively improves the wheel's stability, greatly reduces the subsequent maintenance costs, and increases the wheel's service life.

[0040] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A wheel for a wheelchair, It is characterized in that The invention comprises a tire, a push ring and a wheel hub, wherein the wheel hub comprises a wheel rim (1), a wheel spoke (2) and a wheel axle (3) in sequence from the outside to the inside; a plurality of mounting holes (21) are arranged at equal intervals on the wheel spoke, and the push ring is provided with a connection structure that matches the mounting hole and is connected to the mounting hole through the connection structure; The wheel spokes include three spokes (22), one side of the spokes is provided with a protruding portion (221), and the other side is provided with a recessed portion (222) corresponding to the position of the protruding portion; a reinforcing rib plate (223) is provided on the recessed portion, and the end of the reinforcing rib plate is connected to the outer side of the wheel axle; a side reinforcing rib (23) is provided at the connection between two adjacent spokes, and the end of the side reinforcing rib is connected to the outer side of the wheel axle; A through slot (31) is provided at the center of the wheel shaft, and a plurality of connection holes (32) are provided at one end.

2. The wheel for a wheelchair according to claim 1, It is characterized in that The connection between adjacent spokes is an arc-shaped curved surface, and the spokes and the wheel rim are connected in an arc-shaped transition.

3. The wheel for a wheelchair according to claim 1, It is characterized in that The cross section of the spoke is a triangular structure, and the three sides of the triangular structure are all arc-shaped sides.

4. The wheel for a wheelchair according to claim 1, It is characterized in that The protruding portion is a pyramid structure, and the bottom of the pyramid structure is an arc structure.

5. The wheel for a wheelchair according to claim 4, It is characterized in that The reinforcing rib plate is arranged on the central axis of the spoke, and its structure is a triangular structure; the structure of the side reinforcing rib is a triangular structure, and the angle between the side reinforcing rib and the reinforcing rib plate is 60°.

6. The wheel for a wheelchair according to claim 1, It is characterized in that The number of the connection holes is six, and the six connection holes are distributed on the periphery of the wheel axle in a circular array structure.

7. The wheel for a wheelchair according to claim 1, It is characterized in that The wheel hub is an integrally formed structure.

8. The wheel for a wheelchair according to claim 7, It is characterized in that The wheel hub is made of aluminum alloy material.

9. The wheel for a wheelchair according to claim 1, It is characterized in that The mounting hole is a through hole with an internal thread, one end of the through hole is flush with one side of the spoke, and the other end protrudes from the other side of the spoke, and the protruding direction is the same as the protruding direction of the protruding portion.

10. The wheel for a wheelchair according to claim 9, It is characterized in that The wheel rim is provided with an air nozzle hole, and the wheel spoke is provided with an air nozzle fixing groove (24) matched with the air nozzle hole.

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