Anti-toppling wheel of wheelchair

Abstract

The invention belongs to the technical field of wheelchair equipment, and particularly relates to a wheelchair anti-toppling wheel which comprises a wheelchair body. The motor box and the driving push rod are installed below the wheelchair body through a rack, and the motor box is used for controlling driving adjustment of the wheelchair body; a second spring, a second damping rod, a third spring, a third damping rod and an anti-tilting wheel are matched; when the wheelchair body is used and the wheelchair body and the leg supports are unfolded, the gravity center of the wheelchair body changes, the wheelchair inclines, rapid resetting and buffering are achieved through anti-toppling wheels under the cooperation of third springs and third damping rods and under the action of the third springs, vibration waves of the third springs are reduced through the third damping rods, and therefore the wheelchair is more comfortable to use. The anti-toppling wheels increase the stability between the moving wheels and the guide wheels and prevent the center of gravity from shifting; and when the wheelchair body is unbalanced, through cooperation of a second spring and a third spring, the wheelchair body has a good buffering effect and a rapid resetting function, and deviation of the wheelchair body is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of wheelchair equipment, in particular to an anti-tipping wheel for a wheelchair. Background Art

[0002] The wheelchair is an important tool for rehabilitation. It is not only a means of transportation for the physically disabled, but more importantly, it enables them to exercise and participate in social activities with the help of a wheelchair. The traditional electric wheelchair is modified and upgraded based on the manual wheelchair by adding power drive devices, controllers, batteries and other components. By manually operating the controller, the wheelchair can be driven to complete multiple functional operations such as forward, backward, turning, and lying flat, providing a convenient and fast way of movement for the elderly and disabled.

[0003] A Chinese patent with publication number CN117481916A discloses an electric wheelchair, which belongs to the field of wheelchairs and includes a chassis, a seat bracket, a backrest bracket, a leg bracket and an electric folding assembly. The chassis is located at the bottom of the entire electric wheelchair, and the front of the chassis is connected to a front wheel, and the rear is connected to a rear wheel. The electric folding assembly is installed on the upper part of the chassis, and the front of the electric folding assembly is connected to the leg bracket, and the rear is connected to the backrest bracket. The seat bracket is fixedly installed on the electric folding assembly. The electric folding assembly has two states: contraction and expansion. In the contracted state, the leg bracket and the backrest bracket are both in a vertical state. In the expanded state, the leg bracket is lifted upward and the backrest bracket is tilted backward. This application connects the leg bracket and the backrest bracket to the electric folding assembly, and uses the contraction and expansion movement of the electric folding assembly to drive the leg bracket and the backrest bracket to move, so that the user can adjust the sitting posture according to needs, which greatly improves the user's comfort.

[0004] In the above technology, when the user needs to make adjustments, the center of gravity of the wheelchair changes after the leg rests are unfolded, which may cause the wheelchair to tilt easily, posing a safety hazard to the user. In addition, the wheelchair may easily hit stones or other hard objects during movement, causing the wheelchair to lose balance and easily cause the wheelchair to tilt.

[0005] To this end, the present invention provides an anti-tipping wheel for a wheelchair. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the anti-tipping wheel of a wheelchair described in the present invention comprises:

[0008] Wheelchair body;

[0009] A motor box and a driving push rod are installed under the wheelchair body through a frame, wherein the motor box is used to control the driving adjustment of the wheelchair body, and the driving push rod is used to control the angle adjustment of the wheelchair body;

[0010] Handrails rotatably connected to both ends of the wheelchair body through bearings;

[0011] Two moving wheels and two guide wheels are installed under the wheelchair body, and the moving wheels are arranged at the front end of the wheelchair body, and the guide wheels are arranged at the rear end of the wheelchair body;

[0012] The anti-dumping mechanism is arranged on the inner side of the moving wheel;

[0013] The anti-dumping mechanism comprises two anti-dumping wheels; a first cross bar and a second cross bar are fixedly connected on both sides of the wheelchair body, a second damping rod is rotatably connected between the first cross bar and the second cross bar via a pin shaft, and a second spring is sleeved on the outer side of the second damping rod; a first connecting block is fixedly connected to the bottom of the second cross bar, a third damping rod is rotatably connected to the first connecting block via a pin shaft, the bottom of the third damping rod is rotatably connected to the second connecting block via a pin shaft, and a third spring is sleeved on the outer side of the third damping rod; a connecting rod is rotatably connected between the two second connecting blocks via a rotating shaft, both ends of the connecting rod are rotatably connected to a mounting plate, and the anti-dumping wheels are rotatably connected to the mounting plate via bearings.

[0014] Preferably, a mobile phone holder is fixedly connected to one of the armrests, and a rotating mechanism is provided on the mobile phone holder. A plug-in frame is fixedly connected to the bottom of the other armrest, and a manipulation handle is slidably connected to the plug-in frame, and a fastening bolt is threadedly connected to the plug-in frame.

[0015] Preferably, the rear end of the wheelchair body is rotatably connected to two mounting seats via bearings, and the guide wheels are rotatably connected to the mounting seats; a first damping rod is rotatably connected between the mounting seat and the wheelchair body via a pin shaft, and a first spring is sleeved on the outer side of the first damping rod.

[0016] Preferably, the front end of the wheelchair body is rotatably connected to the first telescopic rod through a pin shaft, a driving motor is provided on one side of the pin shaft, and the driving motor is electrically connected to the motor box and the operating handle; the bottom of the first telescopic rod is slidably connected to the second telescopic rod; the first telescopic rod is fixedly connected to a leg rest through a first fixed block, the second telescopic rod is installed with a foot pedal through a second fixed block, and flexible buffer cotton is provided in the leg rest.

[0017] Preferably, a reciprocating screw is rotatably connected to the inner wall of the first telescopic rod via a bearing, the second telescopic rod is threadedly connected to the reciprocating screw, and the top of the reciprocating screw is fixedly connected to a first bevel gear; the first telescopic rod is rotatably connected to a rotating block via a rotating rod, one end of the rotating rod is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the adjacent first bevel gear.

[0018] Preferably, a frame and a telescopic frame are provided at the bottom of the wheelchair body, the frame cooperates with the telescopic frame, and a locking mechanism is provided on the telescopic frame.

[0019] Preferably, a seat cushion is clamped on the outer wall of the wheelchair body, and the seat cushion comprises a seat cushion and a back cushion, and cushioning cotton is arranged inside the seat cushion and the back cushion.

[0020] Preferably, the rear end of the wheelchair body is fixedly connected with four mounting blocks via threaded bolts; telescopic push rods are installed on the two vertical mounting blocks, and anti-slip grooves are formed on the tops of the telescopic push rods.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The anti-tipping wheel of a wheelchair described in the present invention cooperates with a second spring, a second damping rod, a third spring, a third damping rod and an anti-tipping wheel. When the wheelchair body is in use, when the wheelchair body and the leg rest are spread out, the center of gravity of the wheelchair body changes and the wheelchair tilts. The anti-tipping wheel quickly resets and buffers under the action of the third spring with the cooperation of the third spring and the third damping rod. The vibration wave of the third spring is reduced by the third damping rod. The anti-tipping wheel increases the stability between the moving wheel and the guide wheel to prevent the center of gravity from shifting. When the wheelchair body is unbalanced, the cooperation of the second spring and the third spring has a good buffering effect and a quick reset function for the wheelchair body to prevent the wheelchair body from shifting. By additionally adding an anti-tipping wheel for balancing, the stability of the wheelchair in different states can be effectively achieved.

[0023] 2. The anti-tipping wheel of a wheelchair described in the present invention is provided with a first bevel gear and a second bevel gear; the foot pedal is prone to be insufficient in length when facing different groups of people and needs to be adjusted by rotating the rotary block, which drives the rotating rod to rotate, which drives the second bevel gear to rotate, which drives the first bevel gear to rotate, which drives the reciprocating screw to rotate, which drives the second telescopic rod to move, and the second telescopic rod slides inside the first telescopic rod to adjust the height of the foot pedal to be suitable for users with different leg lengths; by providing a leg rest, the legs can be effectively supported, and at the same time, stable support can be achieved by cooperating with the foot pedal, and the leg rest is fixed at different heights by threaded bolts, which is convenient for users with different leg lengths to use and improves comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a first stereogram of the present invention;

[0026] Figure 2 is a second stereogram of the present invention;

[0027] Figure 3 It is a partial stereogram of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the anti-dumping mechanism in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the anti-tilt wheel in the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the footrest and the leg rest in the present invention;

[0031] Figure 7 is a structural schematic diagram of a cross section of a first telescopic rod in the present invention;

[0032] In the figure: 1, wheelchair body; 11, seat cushion; 12, moving wheel; 13, guide wheel; 131, mounting seat; 132, first spring; 133, first damping rod; 2, armrest; 21, mobile phone holder; 22, operating handle; 23, plug-in rack; 3, first cross bar; 31, second spring; 32, second damping rod; 4, second cross bar; 41, third spring; 42, third damping rod; 43, anti-tilt wheel; 44, connecting rod; 45, mounting plate; 46, first connecting block; 47, second connecting block; 5, first telescopic rod; 51, second telescopic rod; 52, leg support; 53, foot pedal; 54, first fixed block; 55, second fixed block; 56, rotary block; 57, reciprocating screw; 58, first bevel gear; 59, second bevel gear; 6, motor box; 61, driving push rod; 62, telescopic rack; 7, mounting block; 71, telescopic push rod. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 7As shown, an anti-tipping wheel of a wheelchair described in an embodiment of the present invention comprises: a wheelchair body 1; a motor box 6 and a driving push rod 61 installed under the wheelchair body 1 through a frame, the motor box 6 is used to control the driving adjustment of the wheelchair body 1, and the driving push rod 61 is used to control the angle adjustment of the wheelchair body 1; an armrest 2 rotatably connected to both ends of the wheelchair body 1 through a bearing; two moving wheels 12 and two guide wheels 13 installed under the wheelchair body 1, and the moving wheels 12 are both arranged at the front end of the wheelchair body 1, and the guide wheels 13 are both arranged at the rear end of the wheelchair body 1; an anti-tipping mechanism, which is arranged on the inner side of the moving wheel 12; the anti-tipping mechanism comprises two anti-tipping wheels 43; both sides of the wheelchair body 1 are fixedly connected with a first cross bar 3 and a first cross bar 43. Two cross bars 4, the first cross bar 3 and the second cross bar 4 are both rotatably connected with a second damping rod 32 through a pin shaft, and the outer side of the second damping rod 32 is sleeved with a second spring 31; the bottom of the second cross bar 4 is fixedly connected with a first connecting block 46, and the first connecting block 46 is rotatably connected with a third damping rod 42 through a pin shaft, the bottom of the third damping rod 42 is rotatably connected with a second connecting block 47 through a pin shaft, and the outer side of the third damping rod 42 is sleeved with a third spring 41; a connecting rod 44 is rotatably connected between the two second connecting blocks 47 through a rotating shaft, and both ends of the connecting rod 44 are rotatably connected with a mounting plate 45, and the anti-tip wheels 43 are rotatably connected to the mounting plate 45 through bearings.

[0035] When the user needs to adjust, the center of gravity of the wheelchair changes after the leg rest 52 of the wheelchair is unfolded, and the wheelchair is prone to tilting, which brings safety hazards to the user. In addition, the wheelchair is prone to hit stones or other hard objects during movement, causing the wheelchair to lose balance and tilt. When the anti-dumping mechanism provided by the present invention is in use, when the wheelchair body 1 and the leg rest 52 are spread out, the center of gravity of the wheelchair body 1 changes, and the wheelchair tilts. Through the anti-dumping wheel, under the cooperation of the third spring 41 and the third damping rod 42, the wheelchair is quickly reset and buffered under the action of the third spring 41. The vibration wave of the third spring 41 is reduced by the third damping rod 42. The anti-dumping wheel increases the stability between the moving wheel 12 and the guide wheel 13 to prevent the center of gravity from shifting. When the wheelchair body 1 is unbalanced, through the cooperation of the second spring 31 and the third spring 41, the wheelchair body 1 has a good buffering effect and a quick reset function to prevent the wheelchair body 1 from shifting. By additionally adding the anti-dumping wheel 43 for balancing, the stability of the wheelchair in different states can be effectively achieved.

[0036] like Figure 1 to Figure 2 As shown, a mobile phone holder 21 is fixedly connected to one of the armrests 2, and a rotating mechanism is provided on the mobile phone holder 21. A plug-in frame 23 is fixedly connected to the bottom of the other armrest 2, and an operating handle 22 is slidably connected to the plug-in frame 23, and a fastening bolt is threadedly connected to the plug-in frame 23.

[0037] When the mobile phone holder 21 and the operating handle 22 provided by the present invention are in use, the mobile phone holder 21 is installed on the armrest 2, so that the user can place the mobile phone conveniently, and the human-computer interaction brings convenience to the user. The mobile phone holder 21 is provided with a rotating mechanism, and the applicability of the mobile phone holder 21 is improved through multi-angle adjustment. The operating handle is provided, so that the user can adjust the wheelchair body 1 by himself to better suit his own use. The operating handle 22 is slidably connected to the plug-in frame 23, and the length of the operating handle 22 is adjusted to facilitate the use of users with different arm lengths.

[0038] like Figure 2 and Figure 3 As shown, the rear end of the wheelchair body 1 is rotatably connected to two mounting seats 131 via bearings, and the guide wheels 13 are rotatably connected to the mounting seats 131; a first damping rod 133 is rotatably connected between the mounting seats 131 and the wheelchair body 1 via a pin shaft, and a first spring 132 is sleeved on the outer side of the first damping rod 133.

[0039] When the first damping rod 133 and the first spring 132 provided by the present invention are in use, the wheelchair body 1 is prone to secondary injuries to the patient caused by bumps. By providing the first damping rod 133 and the first spring 132, rapid reset and buffering can be achieved under the action of the first spring 132, and the first damping rod 133 can reduce the vibration wave of the first spring 132 to prevent the first spring 132 from shaking; the stability of the wheelchair during movement can be achieved, and shaking and bumps can be reduced.

[0040] like Figure 4 and Figure 6 As shown, the front end of the wheelchair body 1 is rotatably connected to the first telescopic rod 5 through a pin shaft, and a driving motor is provided on one side of the pin shaft, and the driving motor is electrically connected to the motor box 6 and the operating handle; the bottom of the first telescopic rod 5 is slidably connected to the second telescopic rod 51; the first telescopic rod 5 is fixedly connected to a leg rest 52 through a first fixing block 54, and the second telescopic rod 51 is installed with a foot pedal 53 through the first fixing block 54, and the leg rest 52 is provided with flexible cushioning cotton.

[0041] When the leg rest 52 and the foot pedal 53 provided by the present invention are in use, the leg rest 52 can be provided to effectively support the legs, and stable support can be achieved by cooperating with the foot pedal 53; with the cooperation of the first telescopic rod 5 and the second telescopic rod 51, the positions of the leg rest 52 and the foot pedal 53 can be easily adjusted to improve the comfort of the user; by providing a driving motor and operating the driving motor through the operating handle 22, the leg rest 52 can be adjusted to different angles, which is convenient for rehabilitation training and also convenient for the user to adjust to a comfortable state.

[0042] like Figure 7As shown, a reciprocating screw 57 is rotatably connected to the inner wall of the first telescopic rod 5 via a bearing, the second telescopic rod 51 is threadedly connected to the reciprocating screw 57, and a first bevel gear 58 is fixedly connected to the top of the reciprocating screw 57; a rotating block 56 is rotatably connected to the first telescopic rod 5 via a rotating rod, and a second bevel gear 59 is fixedly connected to one end of the rotating rod, and the second bevel gear 59 is meshed with the adjacent first bevel gear 58.

[0043] When the first bevel gear 58 and the second bevel gear 59 provided by the present invention are in use, the foot pedal 53 is prone to being insufficient in length when facing different groups of people, and needs to be adjusted. By rotating the rotary block 56, the rotary block 56 drives the rotating rod to rotate, and the rotating rod drives the second bevel gear 59 to rotate, and the second bevel gear 59 drives the first bevel gear 58 to rotate, and the reciprocating screw rod 57 drives the first bevel gear 58 to rotate, and the reciprocating screw rod 57 drives the second telescopic rod 51 to move, and the second telescopic rod 51 slides in the first telescopic rod 5, and the height of the foot pedal 53 is adjusted to be suitable for users with different leg lengths.

[0044] like Figure 3 As shown, a frame and a telescopic frame 62 are provided at the bottom of the wheelchair body 1 , the frame cooperates with the telescopic frame 62 , and a locking mechanism is provided on the telescopic frame 62 .

[0045] When the frame and telescopic frame 62 provided by the present invention are in use, the frame and the telescopic frame 62 cooperate with each other to facilitate the contraction and expansion of the wheelchair body 1, so that the wheelchair body 1 can be easily folded for storage and transportation. The telescopic frame 62 can be easily fixed by setting a locking mechanism, thereby improving the stability of the telescopic frame 62.

[0046] like Figure 1 As shown, a seat cushion 11 is clamped on the outer wall of the wheelchair body 1, and the seat cushion 11 includes a seat cushion and a back cushion, and cushioning cotton is arranged inside the seat cushion and the back cushion.

[0047] When the seat cushion and the back cushion provided by the present invention are in use, both the seat cushion and the back cushion are provided with cushioning cotton, and are designed in a curved shape to be suitable for the back and buttocks of the user, thereby improving the comfort of the user.

[0048] like Figure 2 As shown, the rear end of the wheelchair body 1 is fixedly connected with four mounting blocks 7 via threaded bolts; two vertical mounting blocks 7 are each mounted with a telescopic push rod 71, and the top of each telescopic push rod 71 is provided with anti-slip grooves.

[0049] When the telescopic push rod 71 provided by the present invention is in use, the height of the telescopic push rod 71 is easily adjusted by setting the telescopic push rod 71, so that it is suitable for users of different heights to push the wheelchair body 1 or for rehabilitation training of different heights. By setting the anti-slip grooves, sweating of the hands can be prevented, which may cause the hands to slide and bring safety hazards.

[0050] Working principle: When the user needs to adjust, the center of gravity of the wheelchair changes after the leg rest 52 of the wheelchair is unfolded, and the wheelchair is prone to tilting, which brings safety hazards to the user. In addition, the wheelchair is prone to hit stones or other hard objects during movement, causing the wheelchair to lose balance and tilt. When the anti-dumping mechanism provided by the present invention is in use, when the wheelchair body 1 and the leg rest 52 are spread out, the center of gravity of the wheelchair body 1 changes, and the wheelchair tilts. Through the anti-dumping wheel, under the cooperation of the third spring 41 and the third damping rod 42, the anti-dumping wheel quickly resets and buffers under the action of the third spring 41, and the vibration wave of the third spring 41 is reduced by the third damping rod 42. The anti-dumping wheel increases the stability between the moving wheel 12 and the guide wheel 13 to prevent the center of gravity from shifting. When the wheelchair body 1 is unbalanced, through the cooperation of the second spring 31 and the third spring 41, the wheelchair body 1 has a good buffering effect and a quick reset function to prevent the wheelchair body 1 from shifting. By adding an additional anti-dumping wheel 43 for balancing, the stability of the wheelchair in different states can be effectively achieved.

[0051] By installing a collection bracket on the armrest 2, it is convenient for users to place their mobile phones, and through human-computer interaction, it brings convenience to users. The mobile phone bracket 21 is provided with a rotating mechanism, and the applicability of the mobile phone bracket 21 is improved through multi-angle adjustment; by providing an operating handle, it is convenient for users to adjust the wheelchair body 1 by themselves, so as to better suit their own use. The operating handle 22 is slidably connected to the plug-in frame 23, and by adjusting the length of the operating handle 22, it is convenient for users with different arm lengths to use;

[0052] When the wheelchair body 1 is in use, it is easy to cause secondary injuries to the patient due to bumps. By providing the first damping rod 133 and the first spring 132, the wheelchair body 1 is quickly reset and buffered under the action of the first spring 132, and the first damping rod 133 reduces the vibration wave of the first spring 132 to prevent the first spring 132 from shaking; thus, the wheelchair can be stabilized when moving and the shaking and bumping can be reduced;

[0053] By setting the leg support 52, the legs can be effectively supported, and at the same time, stable support can be achieved by cooperating with the foot pedal 53; with the cooperation of the first telescopic rod 5 and the second telescopic rod 51, the positions of the leg support 52 and the foot pedal 53 are easily adjusted to improve the user's comfort; by setting a driving motor and operating the driving motor through the operating handle 22, the leg support 52 can be adjusted to different angles, which is convenient for rehabilitation training and also convenient for the user to adjust to a comfortable state; when facing different groups of people, the foot pedal 53 is prone to the problem of insufficient length and needs to be adjusted, by rotating the rotary block 56, the rotary block 56 drives the rotating rod to rotate, the rotating rod drives the second bevel gear 59 to rotate, the second bevel gear 59 drives the first bevel gear 58 to rotate, the first bevel gear 58 drives the reciprocating screw 57 to rotate, the reciprocating screw 57 drives the second telescopic rod 51 to move, the second telescopic rod 51 slides in the first telescopic rod 5, and the height of the foot pedal 53 is adjusted to be suitable for users with different leg lengths.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wheelchair anti-tipping wheel, comprising: Wheelchair body (1); A motor box (6) and a driving push rod (61) are mounted below the wheelchair body (1) via a frame, wherein the motor box (6) is used to control the driving adjustment of the wheelchair body (1), and the driving push rod (61) is used to control the angle adjustment of the wheelchair body (1); Handrails (2) rotatably connected to both ends of the wheelchair body (1) via bearings; Two moving wheels (12) and two guide wheels (13) are installed below the wheelchair body (1), wherein the moving wheels (12) are both arranged at the front end of the wheelchair body (1), and the guide wheels (13) are both arranged at the rear end of the wheelchair body (1); An anti-dumping mechanism is arranged on the inner side of the moving wheel (12); The invention is characterized in that: the anti-dumping mechanism comprises two anti-dumping wheels (43); a first cross bar (3) and a second cross bar (4) are fixedly connected on both sides of the wheelchair body (1); a second damping rod (32) is rotatably connected between the first cross bar (3) and the second cross bar (4) via a pin shaft; a second spring (31) is sleeved on the outer side of the second damping rod (32); a first connecting block (46) is fixedly connected to the bottom of the second cross bar (4); a second connecting block (46) is fixedly connected to the bottom of the second cross bar (4); a second damping rod (32) is rotatably connected to the second cross bar (4) via a pin shaft; a second damping rod (32) is sleeved on the outer side of the second damping rod (32); a first connecting block (46) is fixedly connected to the bottom of the second cross bar (4); a second connecting block (46) is fixedly connected to the first cross bar (4) via a pin shaft; a second damping rod (32) is sleeved on the outer side of the second damping rod (32); a second ... spring (31) is sleeved on the outer side of the second damping rod (32); a first connecting block (46) is fixedly connected to the bottom of the second cross bar (4); a second connecting block (46) is sleeved on the outer side of the second damping rod (32); a second connecting block (46) is sleeved on the outer side of the second damping rod (32); a second connecting block (46) is sleeved on the outer side of the second damping rod (32); a second connecting block (46) is sleeved on the outer side of the second damping rod (32 A third damping rod (42) is rotatably connected to the pin shaft, and the bottom of the third damping rod (42) is rotatably connected to a second connecting block (47) via a pin shaft, and a third spring (41) is sleeved on the outer side of the third damping rod (42); a connecting rod (44) is rotatably connected between the two second connecting blocks (47) via a rotating shaft, and both ends of the connecting rod (44) are rotatably connected to a mounting plate (45), and the anti-tip wheel (43) is rotatably connected to the mounting plate (45) via a bearing.

2. The anti-tipping wheel for a wheelchair according to claim 1, characterized in that: A mobile phone holder (21) is fixedly connected to one of the armrests (2), and a rotating mechanism is provided on the mobile phone holder (21). A plug-in frame (23) is fixedly connected to the bottom of the other armrest (2), and a manipulation handle (22) is slidably connected to the plug-in frame (23), and a fastening bolt is threadedly connected to the plug-in frame (23).

3. The anti-tipping wheel for a wheelchair according to claim 2, characterized in that: The rear end of the wheelchair body (1) is rotatably connected to two mounting seats (131) via bearings, and the guide wheels (13) are rotatably connected to the mounting seats (131); a first damping rod (133) is rotatably connected between the mounting seats (131) and the wheelchair body (1) via a pin shaft, and a first spring (132) is sleeved on the outer side of the first damping rod (133).

4. The anti-tipping wheel for a wheelchair according to claim 3, characterized in that: The front end of the wheelchair body (1) is rotatably connected to a first telescopic rod (5) via a pin shaft, a driving motor is provided on one side of the pin shaft, and the driving motor is electrically connected to a motor box (6) and an operating handle; the bottom of the first telescopic rod (5) is slidably connected to a second telescopic rod (51); a leg rest (52) is fixedly connected to the first telescopic rod (5) via a first fixing block (54), a foot pedal (53) is installed on the second telescopic rod (51) via a second fixing block (55), and a flexible cushioning cotton is provided in the leg rest (52).

5. The anti-tipping wheel for a wheelchair according to claim 4, characterized in that: A reciprocating screw (57) is rotatably connected to the inner wall of the first telescopic rod (5) via a bearing, and the second telescopic rod (51) is threadedly connected to the reciprocating screw (57), and the top of the reciprocating screw (57) is fixedly connected to a first bevel gear (58); a rotating block (56) is rotatably connected to the first telescopic rod (5) via a rotating rod, and one end of the rotating rod is fixedly connected to a second bevel gear (59), and the second bevel gear (59) is meshed with an adjacent first bevel gear (58).

6. The anti-tipping wheel for a wheelchair according to claim 5, characterized in that: A frame and a telescopic frame (62) are provided at the bottom of the wheelchair body (1); the frame cooperates with the telescopic frame (62); and a locking mechanism is provided on the telescopic frame (62).

7. The anti-tipping wheel for a wheelchair according to claim 6, characterized in that: A seat cushion (11) is clamped onto the outer wall of the wheelchair body (1), and the seat cushion (11) comprises a seat cushion and a back cushion, and cushioning cotton is provided inside the seat cushion and the back cushion.

8. The anti-tipping wheel for a wheelchair according to claim 7, characterized in that: The rear end of the wheelchair body (1) is fixedly connected to four mounting blocks (7) via threaded bolts; two vertical mounting blocks (7) are each mounted with a telescopic push rod (71), and the top of each telescopic push rod (71) is provided with anti-slip grooves.

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