PU tire of wheelchair

Abstract

The utility model relates to the technical field of tires, and discloses a PU tire of a wheelchair, which comprises a contact ring and a support ring positioned on the inner ring of the contact ring, and a buffer channel for buffering is formed between the contact ring and the support ring; the supporting assembly is arranged in the buffering channel and used for supporting the contact ring and the supporting ring, the supporting assembly comprises a plurality of first supporting bodies and a plurality of second supporting bodies, the first supporting bodies and the second supporting bodies are fixedly arranged between the contact ring and the supporting ring, and the first supporting bodies and the second supporting bodies can deform to absorb impact; a buffering channel is formed between a contact ring and a supporting ring, a plurality of deformable first supporting bodies and a plurality of deformable second supporting bodies are arranged in the buffering channel, in the walking process of the contact ring making contact with the ground, the contact ring is extruded, the first supporting bodies and the second supporting bodies can be deformed, and on the basis that strong supporting of the contact ring is guaranteed, the service life of the contact ring is prolonged. Bumping caused by road surface fluctuation can be absorbed through deformation of the first supporting body and the second supporting body, and the riding comfort is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a PU tire for a wheelchair. Background Art

[0002] The tire in the prior art includes a tread and a sidewall. PU tires in the prior art are generally of two types: pneumatic and solid. For wheelchair tires, solid tires are often used for ease of use.

[0003] The prior art discloses a PU tire (Announcement No.: CN205523451U), which includes an annular body, which rotates around a rotation axis and has an outer periphery centered on the rotation axis and an inner periphery located inside the body, the outer periphery including a tread for contacting a contact surface, the tread being provided with a tread pattern, and a weight-reducing groove being provided along the circumferential direction of the inner periphery, and the weight-reducing groove being provided openly along the center of the body.

[0004] The solid tire in the existing technology is an integrally molded one-piece tire with a solid sidewall design. Although this avoids the risk of puncture and air leakage, it is harder than a pneumatic tire, has a limited range of deformation, and has a general cushioning effect. When used on a wheelchair, the driving experience is poor, and there is room for improvement. Utility Model Content

[0005] The utility model mainly solves the technical problem that the shock filtering effect of the solid tire used in the above-mentioned wheelchair is generally poor, and provides a PU tire for the wheelchair.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a PU tire for a wheelchair, comprising:

[0007] A contact ring and a support ring located inside the contact ring, with a buffer channel for buffering formed between the contact ring and the support ring;

[0008] A support assembly is arranged in the buffer channel to support the contact ring and the support ring. The support assembly includes a first support body and a second support body. Several first support bodies and second support bodies are fixedly arranged between the contact ring and the support ring. The first support body and the second support body can deform to absorb impact.

[0009] As a preferred embodiment of the present invention, the outer circumference of the contact ring is provided with an anti-slip groove, the support ring is annular, the diameter of the support ring is smaller than the inner ring diameter of the contact ring, and the inner ring of the support ring is equipped with a hub.

[0010] As a preferred embodiment of the present invention, the buffer channel forms an annular channel, and the lengths of the first support body and the second support body are equal to the arch length of the buffer channel.

[0011] As a preferred embodiment of the present invention, the first support body forms a folded plate structure with a V-shaped cross-section, one end of the first support body is connected to the inner wall of the contact ring, and the other end of the first support body is connected to the outer wall of the support ring, and the first support body, the support ring and the contact ring are formed as one piece.

[0012] As a preferred embodiment of the present invention, the length of the first support body is equal to the thickness of the contact ring, and the first support body parts in the buffer channel are equidistant.

[0013] As a preferred embodiment of the present invention, the second support body includes two ends and an extension section located between the two ends. The end and the extension section are integrally formed, and the end forms a Y shape. The two ends of the second support body are respectively connected to the contact ring and the support ring, and the second support body, the contact ring and the support ring are integrally formed.

[0014] As a preferred embodiment of the present invention, two second support bodies are arranged on one side of the first support body, the first support bodies and the second support bodies are distributed alternately, the length of the second support body is less than the thickness of the contact ring, the second support body extends from one end of the contact ring to the other end, and a gap is left between the two second support bodies on the same side of the first support body.

[0015] The utility model provides a PU tire for a wheelchair, which has the following beneficial effects:

[0016] 1. This wheelchair's PU tire has a buffer channel formed between a contact ring and a support ring, within which a plurality of deformable first and second support bodies are disposed. When the contact ring contacts the ground while the wheelchair is moving, the first and second support bodies are deformed by compression of the contact ring. While ensuring strong support for the contact ring, the deformation of the first and second support bodies can absorb bumps caused by road undulations, resulting in greater riding comfort.

[0017] 2. The PU tire of the wheelchair is provided with a V-shaped first support body, and the contact ring and the support ring are supported by multiple first support bodies with the same width as the contact ring, so that the support of the contact ring during walking is guaranteed. In conjunction with the second support body, the deformation of the contact ring can squeeze the first support body, and the second support body deforms toward the circumferential direction of the contact ring, which can buffer the huge torque of instantaneous acceleration, and has better support and buffering effects, which will be more beneficial to the life of the contact ring. At the same time, the shock absorption effect during driving is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the overall three-dimensional diagrams of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the contact ring and support ring of the utility model;

[0020] Figure 3 This is the second overall stereogram of the utility model;

[0021] Figure 4 This is a partial cutaway view of the contact ring of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the first support body and the second support body of the utility model.

[0023] Legend: 10, contact ring; 11, support ring; 12, buffer channel; 20, first support body; 21, second support body. DETAILED DESCRIPTION

[0024] A PU tire for a wheelchair, such as Figure 1 and Figure 2 Shown, including:

[0025] The contact ring 10 and the support ring 11 located on the inner ring of the contact ring 10, a buffer channel 12 for buffering is formed between the contact ring 10 and the support ring 11, an anti-slip groove is provided on the outer circumference of the contact ring 10, the support ring 11 is annular, and the diameter of the support ring 11 is smaller than the inner ring diameter of the contact ring 10, and a wheel hub is installed on the inner ring of the support ring 11, wherein the end of the wheel hub is fixedly connected with a connecting shaft, and the connecting shaft is used to connect to the drive unit of the wheelchair, which will not be elaborated here. The wheel hub can be five-spoke.

[0026] like Figure 2 、 Figure 3 and Figure 4 As shown, the support assembly is arranged in the buffer channel 12 for supporting the contact ring 10 and the support ring 11. The support assembly includes a first support body 20 and a second support body 21. A plurality of first support bodies 20 and second support bodies 21 are fixedly arranged between the contact ring 10 and the support ring 11. The first support bodies 20 and the second support bodies 21 can deform to absorb impact. The buffer channel 12 forms an annular channel. The length of the first support body 20 and the second support body 21 is equal to the arch length of the buffer channel 12.

[0027] In this solution, a buffer channel 12 is formed between the contact ring 10 and the support ring 11, and a plurality of deformable first support bodies 20 and second support bodies 21 are arranged in the buffer channel 12. When the contact ring 10 contacts the ground and walks, the contact ring 10 is squeezed to deform the first support bodies 20 and the second support bodies 21. On the basis of ensuring strong support for the contact ring 10, the deformation of the first support bodies 20 and the second support bodies 21 can absorb the bumps caused by the undulations of the road surface, and the driving comfort is higher.

[0028] like Figure 4 and Figure 5As shown, the first support body 20 forms a folded plate structure with a V-shaped cross-section, one end of the first support body 20 is connected to the inner wall of the contact ring 10, and the other end of the first support body 20 is connected to the outer wall of the support ring 11, the first support body 20 and the support ring 11 and the contact ring 10 are integrally formed, the length of the first support body 20 is equal to the thickness of the contact ring 10, the first support body 20 in the buffer channel 12 is equidistant, the second support body 21 includes two ends and an extension section located between the two ends, the end and the extension section are integrally formed, the end forms a Y shape, the two ends of the second support body 21 are respectively connected to the contact ring 10 and the support ring 11, the second support body 21 is integrally formed with the contact ring 10 and the support ring 11, two second support bodies 21 are arranged on one side of the first support body 20, the first support body 20 and the second support body 21 are distributed alternately, the length of the second support body 21 is less than the thickness of the contact ring 10, the second support body 21 extends from one end to the other end of the contact ring 10, and a gap is left between the two second support bodies 21 on the same side of the first support body 20;

[0029] As a supplement to the above scheme, by setting a V-shaped first support body 20, the contact ring 10 and the support ring 11 are supported by multiple first support bodies 20 with the same width as the contact ring 10, so that the support of the contact ring 10 during walking is guaranteed. In conjunction with the second support body 21, the deformation of the contact ring 10 can squeeze the first support body 20 and the second support body 21 to deform toward the circumferential direction of the contact ring 10, which can buffer the huge torque of instantaneous acceleration, and has better support and buffering effects, which will be more beneficial to the life of the contact ring 10. At the same time, the shock absorption effect during driving is also improved.

[0030] The working principle of the present invention is as follows: a buffer channel 12 is formed between the contact ring 10 and the support ring 11, and a plurality of deformable first support bodies 20 and second support bodies 21 are arranged in the buffer channel 12. When the contact ring 10 contacts the ground and walks, the contact ring 10 is squeezed to deform the first support body 20 and the second support body 21. The contact ring 10 and the support ring 11 are supported by a plurality of first support bodies 20 with the same width as the contact ring 10, so that the support of the contact ring 10 when walking is guaranteed. In conjunction with the second support body 21, the deformation of the contact ring 10 can squeeze the first support body 20 and the second support body 21 toward the circumferential direction of the contact ring 10, which can buffer the huge torque of instantaneous acceleration.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A PU tire for a wheelchair, characterized in that: include: A contact ring (10) and a support ring (11) located inside the contact ring (10), wherein a buffer channel (12) for buffering is formed between the contact ring (10) and the support ring (11); A support assembly is provided in a buffer channel (12) for supporting a contact ring (10) and a support ring (11), wherein the support assembly comprises a first support body (20) and a second support body (21), wherein a plurality of first support bodies (20) and second support bodies (21) are fixedly provided between the contact ring (10) and the support ring (11), and the first support bodies (20) and the second support bodies (21) are capable of deforming to absorb impact.

2. The PU tire for a wheelchair according to claim 1, characterized in that: The outer circumference of the contact ring (10) is provided with an anti-slip groove, the support ring (11) is annular, the diameter of the support ring (11) is smaller than the inner ring diameter of the contact ring (10), and the inner ring of the support ring (11) is equipped with a wheel hub.

3. The PU tire for a wheelchair according to claim 1, characterized in that: The buffer channel (12) forms an annular channel, and the lengths of the first support body (20) and the second support body (21) are equal to the arch length of the buffer channel (12).

4. The PU tire for a wheelchair according to claim 1, characterized in that: The first support body (20) forms a folded plate structure with a V-shaped cross section, one end of the first support body (20) is connected to the inner wall of the contact ring (10), and the other end of the first support body (20) is connected to the outer wall of the support ring (11), and the first support body (20), the support ring (11) and the contact ring (10) are integrally formed.

5. The PU tire for a wheelchair according to claim 1, characterized in that: The length of the first support body (20) is equal to the thickness of the contact ring (10), and the first support body (20) in the buffer channel (12) is equidistant.

6. The PU tire for a wheelchair according to claim 4, characterized in that: The second support body (21) comprises two ends and an extension section located between the two ends, the end and the extension section are integrally formed, and the end forms a Y shape. The two ends of the second support body (21) are respectively connected to the contact ring (10) and the support ring (11), and the second support body (21) is integrally formed with the contact ring (10) and the support ring (11).

7. The PU tire for a wheelchair according to claim 6, characterized in that: Two second support bodies (21) are arranged on one side of the first support body (20), the first support body (20) and the second support body (21) are distributed alternately, the length of the second support body (21) is less than the thickness of the contact ring (10), the second support body (21) extends from one end to the other end of the contact ring (10), and a gap is left between the two second support bodies (21) on the same side of the first support body (20).

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