Damping wheel for a wheelchair and wheelchair

Abstract

The utility model belongs to the technical field of wheelchair, concretely relates to a shock absorbing wheel for wheelchair and wheelchair. The shock absorbing wheel for wheelchair includes wheel body, is installed with shock absorbing device on the wheel body, and the shock absorbing device has: installation arm, is used for being connected with the seat of wheelchair, wheel support is used for installing wheel body, and support is used for connecting installation arm and wheel support, wherein, wheel support is equipped with installation rod between the support, and the installation rod is equipped with shock absorbing spring. The utility model is because the shock absorbing wheel is installed on the front wheel, and every shock absorbing wheel is independently set, can form the better shock absorbing effect to the front wheel of wheelchair, promotes the security and the comfort of wheelchair.

Description

Technical Field

[0001] This utility model belongs to the field of wheelchair technology, specifically relating to a shock-absorbing wheel for a wheelchair and a wheelchair. Background Technology

[0002] As a medical device, wheelchairs are designed to serve specific groups or the elderly, especially those with mobility impairments, enabling them to travel and participate in social activities. Traditional wheelchair designs include a seat, front wheels on either side of the seat, and rear wheels. However, the front and rear wheels typically lack shock-absorbing structures, resulting in poor safety and comfort.

[0003] To address these issues, some wheelchairs with shock absorption functions have appeared on the market. Their structure is usually linked shock absorption, meaning that the two rear wheels on the back form a unified shock absorption system without an independent shock absorption system. Therefore, when the wheelchair encounters uneven or poor road conditions, it will inevitably experience severe jolts due to the lack of sufficient cushioning and shock absorption. This jolts not only greatly reduce the comfort of riding but may also cause the wheelchair to lose balance, resulting in the safety hazard of tilting or even tipping over. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a shock-absorbing wheel for wheelchairs and a wheelchair that can independently provide shock absorption.

[0005] The present invention adopts the following technical solution:

[0006] A shock-absorbing wheelchair includes a wheel body with a shock-absorbing device mounted on it. The shock-absorbing device has: a mounting arm for connecting to the seat of the wheelchair; a wheel frame for mounting the wheel body; and a bracket for connecting the mounting arm and the wheel frame. A mounting rod is provided between the wheel frame and the bracket, and a shock-absorbing spring is sleeved on the mounting rod.

[0007] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following features: the wheel frame includes: a first connecting end, connected to one end of the mounting rod, and the connection has a first connecting axis; a second connecting end, connected to the bracket, and the connection has a second connecting axis; and a third connecting end, connected to the wheel body, and the connection has a third connecting axis; the perpendicular line between the first connecting axis and the third connecting axis is L1, and the perpendicular line between the second connecting end and the third connecting axis is L2, wherein L1 and L2 are arranged at an angle.

[0008] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following feature: the angle is less than or equal to 90°.

[0009] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following features: the bracket includes a pair of symmetrically arranged connecting plates, each connecting plate having: a lower connecting end connected to the second connecting end; an upper connecting end connected to the mounting arm; and a middle connecting end connected to the other end of the mounting rod.

[0010] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following features: a pair of adjusting blocks are provided between the pair of upper connecting ends, and adjusting grooves are provided on both sides of the end of the mounting arm connected to the upper connecting end. One side of the adjusting block is in contact with the inner wall of the upper connecting end, and the other side is embedded in the adjusting groove.

[0011] Furthermore, the wheelchair shock absorber wheel proposed in this utility model may also have the following features: the mounting arm is provided with a connecting hole that passes through a pair of the adjustment slots, the adjustment block and the upper connecting end are provided with a through hole that is coaxially arranged, and the connector passes through the through hole and the connecting hole to install and fix the upper connecting end, the adjustment block and the mounting arm.

[0012] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following features: one end of the mounting rod forms a connector, and the other end forms a connecting sleeve; the first connecting end has a pair of spaced-apart connecting plates; the connector is inserted between the pair of connecting plates; and the connecting sleeve is inserted between the middle connecting ends of the pair of connecting plates.

[0013] Furthermore, the wheelchair shock-absorbing wheel proposed in this utility model may also have the following features: it further includes a buffer assembly, which has: a fixing part fixed on the seat; a mounting pin, one end of which is connected to the fixing part and the other end of which is connected to the end of the mounting arm away from the bracket; and a buffer spring sleeved on the mounting pin, one end of which abuts against the mounting arm and the other end of which abuts against the fixing part.

[0014] This utility model also proposes a wheelchair, comprising: a seat, a pair of rear wheels mounted on the rear side, and a pair of front wheels mounted on the front side; characterized in that the front wheels are shock-absorbing wheels for wheelchairs as described above.

[0015] Furthermore, the wheelchair proposed in this utility model may also have the following features: the seat includes: a seat body, a frame, the frame having a bottom frame and a main frame; a foot pedal is installed on the bottom frame, the seat body is installed on the main frame, and the mounting arm has a first mounting end connected to the bottom frame and a second mounting end connected to the main frame.

[0016] Functions and effects of utility models

[0017] The shock-absorbing wheels and wheelchairs proposed in this utility model have shock-absorbing wheels installed on the front wheels, and each shock-absorbing wheel has an independently set shock-absorbing device, which can form a better shock absorption effect on the wheelchair and improve the safety and comfort of the wheelchair. Attached Figure Description

[0018] Figure 1 This is a simplified structural diagram of the wheelchair according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the shock-absorbing wheel installed on the frame according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the shock-absorbing wheel according to an embodiment of the present invention.

[0021] Figure 4 This is a structural schematic diagram of the shock-absorbing wheel from another perspective of an embodiment of this utility model.

[0022] Figure 5 This is a structural schematic diagram of the shock absorption device according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the wheel frame structure according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the installation structure of the wheel frame and shock-absorbing spring in an embodiment of this utility model.

[0025] Figure 8 This is a schematic diagram of the mounting arm in an embodiment of this utility model.

[0026] Figure 9 This is a schematic diagram of the structure of the adjustment block in an embodiment of this utility model.

[0027] Reference numerals: Wheelchair 10, Rear wheel 2, Seat 3, Base frame 31, Main frame 32, Diagonal bar 33, Shock-absorbing wheel 4, Wheel body 41, Mounting arm 42, Adjustment groove 421, Connecting hole 4211, First mounting end 422, Wheel frame 43, First connecting end 431, Connecting plate 4311, Through hole 4312, Second connecting end 432, Through hole 4321, Third connecting end 433, Hole 4331, Screw 4332, Nut 433 3. Bracket 44, connecting plates 44a, 44b, lower connecting end 441, upper connecting end 442, middle connecting end 443, adjusting block 444, through hole 4441, mounting rod 45, connector 451, connecting sleeve 452, shock absorber spring 46, connector 51, fixing part 61, mounting pin 62, buffer spring 63, first connecting axis M1, second connecting axis M2, third connecting axis M3, fourth connecting axis M4. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following describes the shock-absorbing wheel and wheelchair of this utility model in detail with reference to the embodiments and accompanying drawings.

[0029] <Example>

[0030] This embodiment proposes a wheelchair 10, such as Figure 1 As shown, the system includes a seat 3, a pair of rear wheels 2 mounted on the rear side of the seat 3, and a pair of front wheels mounted on the front side. The seat 3 includes a seat body and a frame. The frame has a bottom frame 31 and a main frame 32. A foot pedal 33 is mounted on the bottom frame 31, and the seat body (not shown in the figure) is mounted on the main frame 32. The front wheels are mounted on both sides of the front side of the main frame 32, and are both wheelchair shock-absorbing wheels 4.

[0031] Specifically, such as Figures 2-4 As shown, the wheelchair shock-absorbing wheel 4 includes a wheel body 41 on which a shock-absorbing device is mounted. This shock-absorbing device has a mounting arm 42, a wheel frame 43, and a support 44. The mounting arm 42 is for connecting to the frame and is elongated. It has a first mounting end 422 connected to the bottom frame 31 and a second mounting end 423 connected to the main frame 32 at both ends. The first mounting end 422 is fixed to the front end of the bottom frame 31 with screws. The second mounting end 423 is fixed to the bottom bend of the main frame 32 via a connecting block 424 and a connecting bend plate 425. The connecting block 424 is hexagonal, and the connecting bend plate 425 is a bent metal plate. The support 44 connects the mounting arm 42 and the wheel frame 43. A mounting rod 45 is provided between the wheel frame 43 and the support 44, and a shock-absorbing spring 46 is fitted onto the mounting rod 45.

[0032] Wheel frame 43 is used to mount wheel body 41, such as Figure 6 and Figure 7As shown, the wheel frame 43 is L-shaped and includes a first connecting end 431, a second connecting end 432, and a third connecting end 433. The first connecting end 431 is connected to one end of the mounting rod 45. The first connecting end 431 includes a pair of spaced connecting plates 4311. One end of the mounting rod 45 forms a connector 451, which is inserted into the gap between the pair of connecting plates 4311. Corresponding through holes 4312 are provided on the connector 451 and the connecting plates 4311. The connecting plates 4311 and the connector 451 are connected by screws or bolts passing through these through holes 4312. The connection has a first connecting axis M1, which is also the axis of the through hole 4312. The second connecting end 432 is block-shaped with rounded edges and a through hole 4321 in the center. A screw or bolt passes through the through hole 4321 and connects to the bracket 44. The connection point has a second connecting axis M2, which is also the axis of the through hole 4321. The third connecting end 433 is located at the corner of the L-shaped wheel frame 43 and is used to connect to the wheel 41. The third connecting end 433 has a hole 4331 extending through both the front and rear sides. A screw 4332 is installed in the hole 4331. One end of the screw 4332 is fixed by a nut 4333, and the other end is used to connect to the wheel 41. The connection point has a third connecting axis M3, which is also the axis of the hole 4331. When the wheel 41 travels on bumpy roads, its vibration amplitude can be reduced by the shock-absorbing spring 46, thereby reducing the vibration transmitted to the seat 3 and achieving a better shock absorption effect.

[0033] In this embodiment, the perpendicular line between the first connecting axis M1 and the third connecting axis M3 is denoted as L1, and the perpendicular line between the second connecting end 432 and the third connecting axis M3 is denoted as L2. L1 and L2 are arranged at an angle, preferably less than or equal to 90°, to obtain the best vibration reduction effect.

[0034] like Figure 5 As shown, the bracket 44 includes a pair of symmetrically arranged parallel connecting plates 44a and 44b. The connecting plates 44a and 44b have the same shape. Each connecting plate includes a lower connecting end 441, an upper connecting end 442, and a middle connecting end 443. A second connecting end 432 is inserted between the lower connecting ends 441 of the two connecting plates, and the lower connecting end 441 and the second connecting end 432 are connected by screws or bolts. The bottom end of the mounting arm 42 is inserted between the upper connecting ends 442 of the two connecting plates, and the upper connecting end 442 is connected to the bottom end of the mounting arm 42 by screws or bolts. The other end of the mounting rod 45 (the end of the mounting rod 45 away from the connector 451 forms a connecting sleeve 452, this "other end" being the connecting sleeve 452) is connected between the middle connecting ends 443 of the two connecting plates by screws or bolts. Figure 5As shown, the middle connecting end 443 has a fourth connecting axis M4 at the connection point with the connecting sleeve 452. The fourth connecting axis M4 is also the axis of the connecting sleeve 452. The perpendicular line between the first connecting axis M1 and the fourth connecting axis M4 is L3, wherein L1 and L3 are nearly parallel.

[0035] like Figures 3-6 As shown, a pair of adjusting blocks 444 are provided between the pair of upper connecting ends 442. Adjusting grooves 421 are provided on both sides of the end of the mounting arm 42 connected to the upper connecting end 442. The adjusting grooves 421 have a shape adapted to the adjusting blocks 444. One side of the adjusting block 444 is in contact with the inner wall of the upper connecting end 442, and the other side is embedded in the adjusting groove 421. The mounting arm 42 has connecting holes 4211 that pass through the pair of adjusting grooves 421. The adjusting blocks 444 and the upper connecting end 442 have coaxially arranged through holes 4441. Connecting parts 51 (such as screws or bolts) pass through the through holes 4441 and the connecting holes 445 to install and fix the upper connecting end 442, adjusting blocks 444, and mounting arm 42. The adjusting blocks 444 are detachable and replaceable, and can be replaced with adjusting blocks 444 of corresponding sizes according to the actual size of the mounting arm 42, thereby adapting to seats of different sizes or models.

[0036] like Figure 2 As shown, the shock absorption device also includes a buffer assembly, which has a fixing part 61, a mounting pin 62, and a buffer spring 63. The fixing part 61 is fixed to the inclined rod 33 of the seat 3. The front end of the inclined rod 33 is installed with the mounting arm 42, and the rear end is connected to the rear wheel 2. One end of the mounting pin 62 is connected to the fixing part 61, and the other end is connected to the end of the mounting arm 42 away from the bracket 44. The buffer spring 63 is sleeved on the mounting pin 62, with one end abutting against the mounting arm 42 and the other end abutting against the fixing part 61, which can buffer the rolling of the front wheel and further improve the shock absorption effect.

[0037] The wheelchair in this embodiment can also be an electric wheelchair, with a drive motor installed on the rear wheel 2.

[0038] The above embodiments are merely illustrative of specific implementations of the present invention, and the present invention is not limited to the scope of the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing wheelchair wheel, comprising a wheel body, characterized in that, The wheel is equipped with a shock-absorbing device, which has the following characteristics: Mounting arm for connection to the seat of the wheelchair; Wheel frame for mounting the wheel body; and A bracket is used to connect the mounting arm and the wheel frame; A mounting rod is provided between the wheel frame and the bracket, and a shock-absorbing spring is sleeved on the mounting rod.

2. The wheelchair shock-absorbing wheel according to claim 1, characterized in that, The wheel frame includes: The first connecting end is connected to one end of the mounting rod, and the connection has a first connecting axis. The second connecting end is connected to the bracket, and the connection has a second connecting axis. as well as The third connecting end is connected to the wheel body, and the connection point has a third connecting axis; The perpendicular line between the first connecting axis and the third connecting axis is L1, and the perpendicular line between the second connecting end and the third connecting axis is L2, wherein L1 and L2 are arranged at an angle.

3. The wheelchair shock-absorbing wheel according to claim 2, characterized in that, The angle is less than or equal to 90°.

4. The wheelchair shock-absorbing wheel according to claim 2, characterized in that, The support includes a pair of symmetrically arranged connecting plates, each connecting plate having: The lower connection end is connected to the second connection end; The upper connecting end is connected to the mounting arm; and The middle connecting end is connected to the other end of the mounting rod.

5. The wheelchair shock-absorbing wheel according to claim 4, characterized in that, A pair of adjusting blocks are provided between the two upper connecting ends. The mounting arm is connected to the upper connecting end and has adjusting grooves on both sides. One side of the adjusting block is in contact with the inner wall of the upper connecting end, and the other side is embedded in the adjusting groove.

6. The wheelchair shock-absorbing wheel according to claim 5, characterized in that, The mounting arm has a connecting hole that passes through a pair of adjustment slots. The adjustment block and the upper connecting end have a through hole that is coaxially arranged. The connector passes through the through hole and the connecting hole to install and fix the upper connecting end, the adjustment block and the mounting arm.

7. The wheelchair shock-absorbing wheel according to claim 4, characterized in that, One end of the mounting rod forms a connector, and the other end forms a connecting sleeve. The first connecting end has a pair of spaced-apart connecting plates. The connector is inserted between the pair of connecting plates, and the connecting sleeve is inserted between the middle connecting ends of the pair of connecting plates.

8. The wheelchair shock-absorbing wheel according to any one of claims 1-7, characterized in that, It also includes a buffer component that has: The fixing part is fixed to the seat. The mounting pin has one end connected to the fixing part and the other end connected to the end of the mounting arm away from the bracket; and A buffer spring is sleeved on the mounting pin, with one end abutting against the mounting arm and the other end abutting against the fixing part.

9. A wheelchair, comprising: The seat has a pair of rear wheels mounted on the rear side and a pair of front wheels mounted on the front side; The characteristic feature is that the front wheel is a shock-absorbing wheel for a wheelchair as described in any one of claims 1-8.

10. The wheelchair according to claim 9, characterized in that, The seat includes: Seat body, A frame, the frame having a bottom frame and a main frame; A foot pedal is mounted on the base frame, the seat body is mounted on the main frame, and the mounting arm has a first mounting end connected to the base frame and a second mounting end connected to the main frame.

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