Multi-angle adjusting leg support device

Abstract

The utility model discloses a multi-angle adjusting leg support device which comprises a leg support inclined rod, a pedal plate, a leg support plate, an air rod and a fixed vertical rod, the bottom of the leg support inclined rod is connected with the pedal plate towards the inner side, the middle of the leg support inclined rod is connected with the leg support plate towards the inner side, and the multi-angle adjusting leg support device is characterized in that the top of the leg support inclined rod is connected with the top of the fixed vertical rod in a hinged mode; the rear part of the lower section of the leg support inclined rod is fixedly connected with a rod cylinder seat; the rod cylinder seat is movably connected with the bottom of a rod cylinder of the air rod; a travel switch base is fixed to the outer wall of the top of a travel telescopic rod of the air rod, and a telescopic rod valve switching device is movably connected to the travel switch base. The top of the travel switch seat is hinged to the middle section of the fixed vertical rod; according to the structure of the product, the required leg supporting inclination can be adjusted according to the lengths of the shanks and the sitting and lying states of people, so that people can place the shanks more comfortably.

Description

Technical Field

[0001] The utility model relates to a footrest device and a leg rest device of a wheelchair, in particular to a multi-angle adjustable leg rest device. Background Art

[0002] Example 1: The Chinese patent document publication number: CN220256650U discloses an adjustable wheelchair, which includes a base, a seat plate frame, a backrest frame, a leg rest plate frame and a footrest. Two brackets are symmetrically arranged on the base. The front end of the seat plate frame intersects with the front ends of the two brackets and is hinged to the brackets at the intersection. The backrest frame is inclined, and its lower end intersects with the seat plate frame and is hinged to the seat plate frame at the intersection. One end of the leg rest plate frame is hinged to the front end of the seat plate frame, and the other end of the leg rest plate frame is vertically connected to the footrest; it also includes a first telescopic driving member and a second telescopic driving member. The two ends of the first telescopic driving member are respectively hinged to the base and the rear end of the seat plate frame; the two ends of the second telescopic driving member are respectively hinged to the rear end of the seat plate frame and the upper end of the backrest frame; it also includes a V-shaped connecting member and a third telescopic driving member; it can adjust the angles of the seat, backrest and other plates according to the use needs after the height is adjusted, and the user can adjust to a comfortable sitting posture.

[0003] The above are components of the same type of wheelchair. The above leg rest plate frame and footrest cannot be adjusted in an inclined manner, and the leg rest plate frame and footrest cannot adjust the comfort of supporting the lower legs of people in sitting and lying postures.

[0004] Example 2: The Chinese patent document publication number: CN217040530U discloses a wheelchair with a leg exercise function, which includes a wheelchair and a cross plate. The cross plate is arranged below the wheelchair and horizontally, and both ends of one side of the top of the cross plate are fixed with fixed columns, and the tops of the two fixed columns are fixed to both ends of one side of the bottom of the wheelchair. Four ends of the bottom of the wheelchair are all equipped with rollers, and both ends of one side of the wheelchair are hinged with leg rests. The top of the cross plate is provided with an adjusting mechanism for adjusting the two leg rests, and both ends of the two leg rests away from the wheelchair are fixed with footrests. Each footrest is provided with a foot exercise mechanism on the top, and both leg rests are equipped with guard plates on the top.

[0005] The above are components of the same type of wheelchair. The above leg rests and footrests cannot be adjusted in an inclined manner, and the leg rests and footrests cannot adjust the comfort of supporting the lower legs of people in sitting and lying postures. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides a multi-angle adjustable leg rest device with reasonable structural design and convenient multi-angle adjustment.

[0007] The solution to the above technical problems is as follows:

[0008] A multi-angle adjustable leg support device includes a leg support diagonal rod, a footrest, a leg support plate, a gas rod, and a fixed vertical rod. The bottom of the leg support diagonal rod is connected to the footrest on the inner side, and the middle of the leg support diagonal rod is connected to the leg support plate on the inner side. It is characterized in that: the top of the leg support diagonal rod is hinged to the top of the fixed vertical rod; a rod barrel seat is fixedly connected to the rear part of the lower section of the leg support diagonal rod, and the rod barrel seat is movably connected to the bottom of the rod barrel of the gas rod; a travel switch seat is fixed on the outer wall of the top of the travel telescopic rod of the gas rod, and a telescopic rod valve switch device is movably connected to the travel switch seat; the top of the travel switch seat is hinged to the middle section of the fixed vertical rod.

[0009] The beneficial effects of the multi-angle adjustable leg support device of the present utility model are as follows: When a person sits on a wheelchair, the inclination degrees of the footrest and the leg support plate can be adjusted according to the required inclination comfort of the lower leg; the inclination degrees of the footrest and the leg support plate of this product are adjusted by operating the telescopic rod valve switch device to adjust the elastic switch valve at the top cross-section of the travel telescopic rod of the gas rod, realizing multi-angle flipping adjustment; the structure of this product can adjust the required inclination degree of the leg support according to the length of a person's lower leg to make it more comfortable for more people to use; the structure of this product can adjust the required inclination degree of the leg support according to a person's sitting and lying states; the structure of this product is convenient for people to adjust the required inclination degree of the leg support, making the placement of the lower leg of the person sitting on the wheelchair more comfortable. Brief Description of the Drawings

[0010] Figure 1 It is a side view of the product of the present utility model in the normal state;

[0011] Figure 2 It is a side view of the product of the present utility model after the leg support diagonal rod, the footrest, the leg support plate, and the gas rod are all raised to adjust the inclination degree;

[0012] Figure 3 、 Figure 4 、 Figure 5 It is a three-dimensional view of the present utility model;

[0013] Figure 6 、 Figure 7 、 Figure 8 It is an exploded view of the present utility model.

[0014] Leg support diagonal rod 1, footrest 2, leg support plate 3, gas rod 4, travel telescopic rod 41, elastic switch valve 42, fixed vertical rod 5, protruding part 51, rod barrel seat 6, travel switch seat 7, telescopic rod valve switch device 8, L-shaped switch rod 81, limit anti-disengagement part 82, long strip vertical through hole 83, through connection hole 84, upward pressing part 9, groove 91, jack 92. Detailed Embodiment

[0015] Such as Figures 1 to 8As shown: A multi-angle adjustable leg rest device, belonging to the wheelchair component device. The multi-angle adjustable leg rest device includes a leg rest diagonal rod 1, a footrest 2, a leg rest plate 3, a gas rod 4, and a fixed vertical rod 5. The leg rest diagonal rod 1, the footrest 2, the leg rest plate 3, the gas rod 4, and the fixed vertical rod 5 are existing technology products. The fixed vertical rod 5 is vertically and fixedly installed at the front of the wheelchair; the bottom of the leg rest diagonal rod 1 is connected to the inside by passing through or by means of a screw assembly or the like with the footrest 2, and the middle part of the leg rest diagonal rod 1 is connected to the inside by a screw assembly with the leg rest plate 3; the leg rest diagonal rod 1 is made of metal, such as made of aluminum pipe or iron pipe; after the leg rest diagonal rod 1 is adjusted obliquely, the leg rest plate 3 is used to support the calf of a person, enhancing the comfort of placing the feet; the footrest 2 is used to place the feet of a person; the fixed vertical rod 5 is made of metal, such as made of aluminum pipe or iron pipe.

[0016] The main technical improvement of this product lies in: The top of the leg rest diagonal rod 1 is hinged to the top of the fixed vertical rod 5; the rear part of the lower section of the leg rest diagonal rod 1 is welded or fixedly connected by a screw assembly with a rod cylinder seat 6, and the rod cylinder seat 6 is in a U shape; the rod cylinder seat 6 is movably connected to the bottom of the rod cylinder of the gas rod 4; the top outer wall of the stroke telescopic rod 41 of the gas rod 4 is fixedly connected by a screw assembly with a stroke switch seat 7, and an expansion rod valve switch device 8 is movably connected to the stroke switch seat 7; the top of the stroke switch seat 7 is hinged to the middle section of the fixed vertical rod 5;

[0017] When using this product, a person sits on the wheelchair and can adjust the inclination angles of the footrest 2 and the leg rest plate 3 according to the required inclination comfort of their calves to support the calves. For example: When a person is sitting, it is more comfortable to adjust the inclination of the footrest 2 and the leg rest plate 3 by 15 degrees to 20 degrees for support; for example: When the wheelchair is adjusted to a lying and sleeping position, when a person is lying and sleeping, it is more comfortable to adjust the inclination of the footrest 2 and the leg rest plate 3 by 45 degrees to 60 degrees for support.

[0018] When it is necessary to adjust the inclination angles of the footrest 2 and the leg rest plate 3 upward, by operating the expansion rod valve switch device 8, the elastic switch valve 42 of the top cross-section of the stroke telescopic rod 41 of the gas rod 4 is compressed to open the valve, so that the inside and outside of the gas rod 4 are ventilated and will not suck tightly the stroke telescopic rod 41. When the calf is lifted, the stroke telescopic rod 41 automatically pops out, pushing up the leg rest diagonal rod 1 upward. The leg rest diagonal rod 1 flips upward and rises, and the footrest 2 and the leg rest plate 3 flip and rise synchronously. When it rises to a suitable inclination angle, the expansion rod valve switch device 8 is released, and the elastic switch valve 42 of the top cross-section of the stroke telescopic rod 41 of the gas rod 4 automatically pops out to close the valve, so that the gas rod 4 stops ventilating, sucks tightly the stroke telescopic rod 41, stops the telescopic adjustment of the stroke telescopic rod 41, fixes the extended length of the stroke telescopic rod 41, thereby fixing the inclination angle of the leg rest diagonal rod 1, and thus fixing the inclination angles of the footrest 2 and the leg rest plate 3; when adjusting the inclination angle of the leg rest diagonal rod 1, the gas rod 4, the stroke switch seat 7, and the rod cylinder seat 6 also flip and move accordingly; the fixed vertical rod 5 stands still.

[0019] When it is necessary to adjust the inclination of the footrest 2 and the leg support plate 3 downward by flipping, the telescopic rod valve switch device 8 is operated to compress the elastic switch valve 42 at the top cross-section of the stroke telescopic rod 41 of the gas rod 4, opening the valve so that the inside and outside of the gas rod 4 are ventilated, and the stroke telescopic rod 41 will not be tightly sucked. Using the lower leg to press down the footrest 2 and the leg support plate 3 forcefully, the stroke telescopic rod 41 is compressed and retracted inward, and the leg support diagonal rod 1 flips downward. The leg support diagonal rod 1 flips downward and descends, and the footrest 2 and the leg support plate 3 flip downward and descend synchronously. When it flips downward and descends to a suitable inclination angle, the telescopic rod valve switch device 8 is released, and the elastic switch valve 42 at the top cross-section of the stroke telescopic rod 41 of the gas rod 4 automatically pops out to close the valve, so that the gas rod 4 stops ventilating and sucks tightly the stroke telescopic rod 41, stopping the telescopic adjustment of the stroke telescopic rod 41, fixing the extended length of the stroke telescopic rod 41, thereby fixing the inclination of the leg support diagonal rod 1, and thus fixing the inclination of the footrest 2 and the leg support plate 3; when adjusting the inclination of the leg support diagonal rod 1, the gas rod 4, the travel switch seat 7, and the rod barrel seat 6 also flip along.

[0020] The above adjustment of the inclination of the footrest 2 and the leg support plate 3 is achieved by operating the telescopic rod valve switch device 8 to adjust the elastic switch valve 42 at the top cross-section of the stroke telescopic rod 41 of the gas rod 4, realizing multi-angle flipping adjustment; the above structure can adjust the required leg support inclination according to the length of the lower leg of a person, so as to adapt to more people to use more comfortably; the above structure can adjust the required leg support inclination according to the sitting and lying states of a person; the above structure is convenient for people to adjust the required leg support inclination, making the placement of the lower leg of the person sitting in the wheelchair more comfortable.

[0021] The above adjustment can be arbitrarily telescoped within the telescopic length range of the stroke telescopic rod 41 of the gas rod 4, and the extended length of the stroke telescopic rod 41 determines the inclination of the footrest 2 and the leg support plate 3.

[0022] Further improvement of the preferred technical solution: The top of the fixed vertical rod 5 is fixedly connected with an upper top member 9, and the upper top member 9 is hinged to the top of the leg support diagonal rod 1; in this way, the movable hinge connection is more flexible, there is more sufficient space for the movable hinge, and it is flexible to use.

[0023] The top of the fixed vertical rod 5 and the rear part of the upper top member 9 are jointly connected by cross bolts to form a fixed connection, and its connection is firm and stable; the front part of the upper top member 9 and the top of the leg support diagonal rod 1 are jointly connected by cross bolts to form a hinged movable connection, with stable connection and good anti-disconnection ability.

[0024] Further preferred technical solution: a groove 91 is provided at the front bottom of the upper top component 9, and a socket 92 is provided at the rear bottom of the upper top component 9. The top of the fixed vertical rod 5 is inserted into the socket 92 and fixed, and the top of the leg support diagonal rod 1 is movably inserted into the groove 91. The upper top component 9 wraps the top end cross-section of the leg support diagonal rod 1 and the top end cross-section of the fixed vertical rod 5; the outer top of the upper top component 9 is an arc-shaped top surface, which prevents the cross-sectional end from piercing or scratching people's pants and prevents the cross-sectional end from possibly injuring people.

[0025] Further preferred technical solution: a protruding part 51 is welded and fixedly connected to the front wall of the middle section of the fixed vertical rod 5, and the protruding part 51 and the top of the travel switch seat 7 are connected together by cross bolts to form an articulated movable connection, which has a stable connection and good anti-slip ability, and is more convenient to connect with the top of the travel switch seat 7. In this way, the movable hinge connection is more flexible, the movable hinge has more sufficient space, and is flexible to use.

[0026] Further preferred technical solution: the travel switch seat 7 is in a U-shaped structure, clamping the mounting protruding component 51, and the hinged connection is more balanced and stable. The top of the travel telescopic rod 41 of the gas rod 4 is fixedly connected to the travel switch seat 7 of the U-shaped structure by a through-connection method, and the top outer wall of the travel telescopic rod 41 of the gas rod 4 is fixedly connected to the travel switch seat 7 of the U-shaped structure by a nut or welding.

[0027] The top section of the travel telescopic rod 41 of the gas rod 4 is an elastic switch valve 42, which is a component of the gas rod 4;

[0028] The telescopic rod valve switch device 8 includes an L-shaped switch rod 81, a limit anti-drop component 82, a long vertical through hole 83 opened on the outer wall of the travel switch seat 7, and a through hole 84 opened on the inner wall of the travel switch seat 7;

[0029] The cross bar section of the L-shaped switch rod 81 crosses the long vertical through hole 83 and the connecting through hole 84, the end of the cross bar section of the L-shaped switch rod 81 passes through the outside of the connecting through hole 84 and is fixedly connected with the limiting anti-detachment component 82, the vertical bar section of the L-shaped switch rod 81 is arranged outside the long vertical through hole 83, and the cross bar section of the L-shaped switch rod 81 is contact-connected with the elastic switch valve 42.

[0030] The above is the specific structure of the telescopic rod valve switch device 8 and the travel switch seat 7. The elastic switch valve 42 is opened by using the lever principle, and the force is small. The structure is simple to operate, convenient and flexible to use.

[0031] During operation, hold the vertical rod section of the L-shaped switch rod 81, then press down forcefully to transmit the downward pressure to the horizontal rod section of the L-shaped switch rod 81. The horizontal rod section of the L-shaped switch rod 81 presses down the elastic switch valve 42 to open the elastic switch valve 42 at the top cross-section of the telescopic rod 41 of the pneumatic rod 4; after releasing the hand, the L-shaped switch rod 81 is no longer pressed, and the elastic switch valve 42 automatically pops up to close the valve;

[0032] Since the L-shaped switch rod 81 moves up and down, a long vertical through-hole 83 needs to be provided to have enough space for up and down movement;

[0033] The limit and anti-disengagement component 82 is a limit and anti-disengagement nut assembly. The diameter of the limit and anti-disengagement nut assembly is larger than the through-hole 84 for passing through. The limit and anti-disengagement nut assembly is tightened at the end of the horizontal rod section of the L-shaped switch rod 81 to play a role in preventing the L-shaped switch rod 81 from disengaging.

[0034] Further improvement of the preferred technical solution: The rod barrel base 6 and the bottom of the rod barrel of the pneumatic rod 4 are jointly connected by a bolt passing through to form a hinged movable connection, with stable connection and good anti-disengagement ability.

[0035] The leg support diagonal rod 1 can be flipped and adjusted relative to the fixed vertical rod 5 by 0 degrees to 90 degrees to adjust the suitable adjustment angle range. According to the needs of the user, adjust the inclination of the footrest 2 and the leg support plate 3 as required.

Claims

1. A multi-angle adjustable leg support device, comprising a leg support inclined rod, a foot pedal, a leg support plate, a gas rod, and a fixed vertical rod, wherein the bottom of the leg support inclined rod is connected to the foot pedal toward the inside, and the middle of the leg support inclined rod is connected to the leg support plate toward the inside, characterized in that: The top of the leg support diagonal rod is hingedly connected to the top of the fixed vertical rod; the rear part of the lower section of the leg support diagonal rod is fixedly connected to a rod barrel seat, and the rod barrel seat is movably connected to the bottom of the rod barrel of the gas rod; the top outer wall of the travel telescopic rod of the gas rod is fixed with a travel switch seat, and the travel switch seat is movably connected to the telescopic rod valve switch device; the top of the travel switch seat is hingedly connected to the middle section of the fixed vertical rod.

2. The multi-angle adjustable leg support device according to claim 1, characterized in that: The top of the fixed vertical rod is fixedly connected with an upper top component, and the upper top component is hingedly connected to the top of the leg support oblique rod.

3. The multi-angle adjustable leg support device according to claim 2, characterized in that: The top of the fixed vertical rod and the rear of the upper top component are connected together by cross bolts to form a fixed connection; the front of the upper top component and the top of the leg support diagonal rod are connected together by cross bolts to form a hinged movable connection.

4. A multi-angle adjustable leg support device according to claim 2 or 3, characterized in that: The front bottom of the upper top component is provided with a groove, the rear bottom of the upper top component is provided with a socket, the top of the fixed vertical rod is inserted into the socket and fixed, the top of the leg support diagonal rod is movably inserted into the groove, and the upper top component wraps the top end section of the leg support diagonal rod and the top end section of the fixed vertical rod; the outer top of the upper top component is an arc-shaped top surface.

5. The multi-angle adjustable leg support device according to claim 1, characterized in that: A protruding component is fixedly connected to the front wall of the middle section of the fixed vertical rod, and the protruding component and the top of the travel switch seat are connected together by a transverse bolt to form an articulated movable connection.

6. The multi-angle adjustable leg support device according to claim 1, characterized in that: The travel switch seat is in a U-shaped structure, the top of the travel telescopic rod of the gas rod is fixedly connected to the travel switch seat of the U-shaped structure in a through-connection manner, and the outer wall of the top of the travel telescopic rod of the gas rod is fixedly connected to the travel switch seat of the U-shaped structure; The top section of the travel telescopic rod of the gas rod is an elastic switch valve; The telescopic rod valve switch device comprises an L-shaped switch rod, a limit anti-drop component, a long vertical through hole opened on the outer side wall of the travel switch seat, and a through hole opened on the inner side wall of the travel switch seat; The cross bar section of the L-shaped switch rod crosses the long vertical through hole and the connecting through hole, the end of the cross bar section of the L-shaped switch rod passes out of the connecting through hole and is fixedly connected with a limit anti-slip component, the vertical bar section of the L-shaped switch rod is arranged outside the long vertical through hole, and the cross bar section of the L-shaped switch rod is contact-connected with the elastic switch valve.

7. The multi-angle adjustable leg support device according to claim 1, characterized in that: The rod barrel seat and the bottom of the rod barrel of the gas rod are connected together by transverse bolts to form an articulated movable connection.

8. The multi-angle adjustable leg support device according to claim 1, characterized in that: The leg support oblique rod is made of metal.

9. The multi-angle adjustable leg support device according to claim 1, characterized in that: The fixed vertical rod is made of metal.

10. The multi-angle adjustable leg support device according to claim 1, characterized in that: The leg support diagonal rod can be flipped and adjusted by 0 to 90 degrees relative to the fixed vertical rod.

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