Adjustable leg support of wheelchair

Abstract

The utility model relates to the technical field of wheelchair leg supports, in particular to an adjustable wheelchair leg support which comprises a front leg tube, a leg pad arranged on the side wall of the front leg tube, a rear leg tube arranged on one side of the front leg tube, an upper end of the front leg tube rotatably connected with the upper portion of the rear leg tube, and an adjusting leg rod rotatably connected with the front leg tube. A plurality of tooth grooves are vertically formed in the side, away from the rear leg pipe, of the adjusting leg rod, a sleeve rod rotationally connected with the rear leg pipe is arranged on one side of the adjusting leg rod, the sleeve rod is connected with a grip, the side wall of the sleeve rod is fixedly connected with a blocking piece arranged on the adjusting leg rod in a sleeving mode, a through hole is formed in the blocking piece, and tooth pieces clamped with the tooth grooves in a matched mode are arranged on the inner side wall of the through hole. The adjusting leg rod is sleeved with a switch angle piece. According to the utility model, the leg pad is convenient to lift, the legs of people can be lifted, and the leg pad can be adjusted at different angles according to requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair leg supports, in particular to an adjustable wheelchair leg support. Background Art

[0002] A wheelchair is an important mobile tool for patients to recover at home and go out, which not only meets the transportation needs of patients, but more importantly, facilitates the movement and care of patients by their families, enabling patients to exercise their bodies and participate in social activities with the help of wheelchairs.

[0003] For example, on September 29, 2017, a disclosed patent with the publication number CN206526197U, an adjustable wheelchair plastic bottom plate, includes a connecting rod, a connecting sleeve, a telescopic rod, a rotating bearing, an anti-slip pad and a footrest. A lifting handle is installed on the right side of the connecting rod. A connecting sleeve is sleeved on the surface of the connecting rod. A leg support pad is installed on the left side of the connecting sleeve. A telescopic rod is installed below the connecting rod. By installing the leg support pad, the utility model can bear the force of the patient's legs, reduce the force on the patient's feet, make the patient more comfortable when using the wheelchair plastic bottom plate, and improve the quality of the wheelchair plastic bottom plate. However, the applicant found that the above leg support cannot be lifted, making it difficult to support the patient's lifted legs. Summary of the Invention

[0004] In view of this, the purpose of the present utility model is to provide an adjustable wheelchair leg support to solve the problem that the leg support is not easy to lift.

[0005] Based on the above purpose, the present utility model provides a front leg tube. A pad shell is arranged on the side wall of the front leg tube. A leg pad is arranged on the pad shell. A rear leg tube is arranged on one side of the front leg tube. The upper end of the front leg tube is rotatably connected to the upper part of the rear leg tube. An adjustable leg rod is rotatably connected to the front leg tube. A plurality of tooth grooves are arranged in an up-and-down arrangement on the side of the adjustable leg rod away from the rear leg tube. A sleeve rod rotatably connected to the rear leg tube is arranged on one side of the adjustable leg rod. The sleeve rod is connected with a grip. A retaining piece sleeved on the adjustable leg rod is fixedly connected to the side wall of the sleeve rod. A through hole is arranged on the retaining piece. A tooth piece matched with the tooth groove is arranged on the inner side wall of the through hole. A switch angle piece is sleeved on the adjustable leg rod. The switch angle piece includes a connecting cylinder sleeved on the adjustable leg rod. A connecting plate is arranged on the connecting cylinder. An opening located on one side of the connecting cylinder is arranged on the connecting plate. The retaining piece penetrates through the opening.

[0006] Optionally, the connecting plate includes a first plate and a second plate vertically connected to the first plate. The first plate is perpendicular to the axis of the connecting cylinder. The second plate is parallel to the axis of the connecting cylinder. A switch spring sleeved outside the connecting cylinder is arranged inside the connecting plate. The two ends of the switch spring are respectively connected to the first plate and the retaining piece.

[0007] Optionally, a switch sleeve sleeved outside the connecting cylinder is disposed on one side of the baffle facing the first plate, and the switch sleeve is disposed inside the switch spring.

[0008] Optionally, a handle frame is connected between the sleeve rod and the grip, and the handle frame is integrally formed with the sleeve rod.

[0009] Optionally, a sleeve is disposed on one side of the rear leg tube facing the front leg tube, and the sleeve rod passes through the sleeve and is rotatably connected to the sleeve.

[0010] Optionally, a U-shaped connecting iron is disposed on the upper part of the rear leg tube, an articulation sleeve perpendicular to the axis of the front leg tube is disposed at the upper end of the front leg tube, the connecting iron and the articulation sleeve are rotatably connected, and a plastic inner plug is disposed inside the articulation sleeve.

[0011] Advantages of the present utility model: For the adjustable leg rest of the wheelchair provided by the present utility model, when it is necessary to raise the front leg tube and the leg pad, manually lift the front leg tube, the front leg tube rotates clockwise around its upper end, the leg pad is lifted, the adjusting leg rod is pulled upward, and after adjusting to a suitable position, the tooth groove on the adjusting leg rod cooperates with the tooth piece on the baffle, so that the front leg tube and the leg pad are fixed after being raised to a suitable position. At this time, people can use the raised leg pad, which is convenient for people to raise the front leg tube and the leg pad, can raise people's legs, and can be adjusted at different angles according to needs; when it is necessary to reset the front leg tube, swing the grip to separate the tooth groove from the tooth piece, and the adjusting leg rod and the front leg tube connected to its upper end move downward under the action of their own gravity, so that the front leg tube is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is an exploded structural view of the present utility model;

[0015] Figure 3 is a partial structural view of the present utility model;

[0016] Figure 4 is Figure 3 an enlarged structural view of part A in

[0017] Figure 5 is Figure 4 the enlarged structural schematic diagram of part B in

[0018] Figure 6 the connection structural schematic diagram of the sleeve rod and the sleeve of the present utility model.

[0019] In the figure: 1, front tube; 2, insertion tube; 3, foot pedal; 4, front leg tube; 5, rear leg tube; 6, adjustable leg rod; 61, tooth groove; 7, retaining piece; 71, tooth piece; 72, perforation; 8, sleeve rod; 9, sleeve; 10, grip; 11, switch sleeve; 12, switch spring; 13, switch angle piece; 131, connecting cylinder; 132, connecting plate; 133, opening; 14, cushion shell; 15, leg pad; 16, joint sleeve; 17, connecting iron; 18, plastic inner plug. Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates on the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0021] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] such as Figures 1 to 6As shown in the figure, an adjustable leg rest for a wheelchair includes a front leg tube 4. A cushion shell 14 is provided on the side wall of the front leg tube 4. A leg cushion 15 is provided on the cushion shell 14. An insertion tube 2 is provided under the front leg tube 4. A front tube 1 perpendicular to the insertion tube 2 is provided on one side of the insertion tube 2. A footrest 3 is connected to the front tube 1. A rear leg tube 5 is provided on one side of the front leg tube 4. The upper end of the front leg tube 4 is rotatably connected to the upper part of the rear leg tube 5. An adjustable leg rod 6 is rotatably connected to the front leg tube 4. A plurality of tooth grooves 61 are arranged vertically on the side of the adjustable leg rod 6 away from the rear leg tube 5. A sleeve rod 8 rotatably connected to the rear leg tube 5 is provided on one side of the adjustable leg rod 6. A grip 10 is connected to the sleeve rod 8. A retaining piece 7 sleeved on the adjustable leg rod 6 is fixedly connected to the side wall of the sleeve rod 8. A through hole 72 is provided on the retaining piece 7. A tooth piece 71 that cooperates and engages with the tooth groove 61 is provided on the inner side wall of the through hole 72. A switch angle piece 13 is sleeved on the adjustable leg rod 6. The switch angle piece 13 includes a connecting cylinder 131 sleeved on the adjustable leg rod 6. A connecting plate 132 is provided on the connecting cylinder 131. An opening 133 located on one side of the connecting cylinder 131 is provided on the connecting plate 132. The retaining piece 7 passes through the opening 133.

[0023] When it is necessary to raise the front leg tube 4 and the leg cushion 15, manually lift the front leg tube 4. The front leg tube 4 rotates clockwise around its upper end, the leg cushion 15 is lifted, the adjustable leg rod 6 is pulled upward. After adjusting to a suitable position, the tooth groove 61 on the adjustable leg rod 6 cooperates with the tooth piece 71 on the retaining piece 7, so that the front leg tube 4 and the leg cushion 15 are fixed at a suitable position after being raised. At this time, people can use the raised leg cushion 15, which is convenient for people to raise the front leg tube 4 and the leg cushion 15, can raise people's legs, and can be adjusted at different angles according to needs; when it is necessary to reset the front leg tube 4, swing the grip 10 to separate the tooth groove 61 from the tooth piece 71. The adjustable leg rod 6 and the front leg tube 4 connected to its upper end move downward under the action of their own gravity, so that the front leg tube 4 is reset.

[0024] The connecting plate 132 includes a first plate and a second plate perpendicularly connected to the first plate. The first plate is perpendicular to the axis of the connecting cylinder 131. The second plate is parallel to the axis of the connecting cylinder 131. A switch spring 12 sleeved outside the connecting cylinder 131 is provided inside the connecting plate 132. The two ends of the switch spring 12 are respectively connected to the first plate and the retaining piece 7.

[0025] A switch sleeve 11 sleeved outside the connecting cylinder 131 is provided on the side of the retaining piece 7 facing the first plate. The switch sleeve 11 is arranged inside the switch spring 12. The arrangement of the switch sleeve 11 is convenient for preventing the switch spring 12 from affecting the cooperation between the tooth groove 61 and the tooth piece 71.

[0026] A handle frame is connected between the sleeve rod 8 and the grip 10, and the handle frame is integrally formed with the sleeve rod 8.

[0027] On one side of the rear leg tube 5 facing the front leg tube 4, a sleeve 9 is provided. The sleeve rod 8 passes through the sleeve 9 and is rotatably connected to the sleeve 9 to facilitate the rotational connection between the sleeve rod 8 and the rear leg tube 5.

[0028] At the upper part of the rear leg tube 5, a U-shaped connecting iron 17 is provided. At the upper end of the front leg tube 4, an articulating sleeve 16 perpendicular to the axis of the front leg tube 4 is provided. The connecting iron 17 and the articulating sleeve 16 are rotatably connected. A plastic inner plug 18 is provided inside the articulating sleeve 16 to facilitate better buffering of external forces during the rotation between the front leg tube 4 and the rear leg tube 5.

[0029] On the side of the switch angle piece 13 facing the front leg tube 4, an elastic spring sleeved on the adjusting leg rod 6 is provided to facilitate the buffering of the reset when the front leg tube 4 rotates counterclockwise.

[0030] Those of ordinary skill in the art should understand that the discussion of any above embodiment is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0031] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable leg support for a wheelchair, comprising a front leg tube (4), a cushion shell (14) being arranged on the side wall of the front leg tube (4), and a leg pad (15) being arranged on the cushion shell (14), characterized in that: A rear leg tube (5) is arranged on one side of the front leg tube (4), the upper end of the front leg tube (4) is rotatably connected to the upper part of the rear leg tube (5), the front leg tube (4) is rotatably connected to an adjusting leg rod (6), a side of the adjusting leg rod (6) away from the rear leg tube (5) is provided with a plurality of tooth grooves (61) arranged in an upper and lower arrangement, a sleeve rod (8) rotatably connected to the rear leg tube (5) is arranged on one side of the adjusting leg rod (6), the sleeve rod (8) is connected to a handle (10), and a baffle (7) sleeved on the adjusting leg rod (6) is fixedly connected to the side wall of the sleeve rod (8), The blocking piece (7) is provided with a through hole (72), and the inner wall of the through hole (72) is provided with a tooth piece (71) engaged with the tooth groove (61). The adjusting leg rod (6) is provided with a switch angle piece (13), and the switch angle piece (13) comprises a connecting tube (131) sleeved on the adjusting leg rod (6), and a connecting plate (132) is provided on the connecting tube (131). The connecting plate (132) is provided with an opening (133) located on one side of the connecting tube (131), and the blocking piece (7) is provided through the opening (133).

2. The adjustable leg support for a wheelchair according to claim 1, characterized in that: The connecting plate (132) comprises a first plate and a second plate vertically connected to the first plate, the first plate being arranged vertically to the axis of the connecting tube (131), the second plate being arranged parallel to the axis of the connecting tube (131), a switch spring (12) sleeved outside the connecting tube (131) being arranged inside the connecting plate (132), the two ends of the switch spring (12) being respectively connected to the first plate and the blocking plate (7).

3. The adjustable leg support for a wheelchair according to claim 2, characterized in that: A switch sleeve (11) sleeved outside the connecting tube (131) is arranged on the side of the blocking piece (7) facing the first plate, and the switch sleeve (11) is arranged inside the switch spring (12).

4. The adjustable leg support for a wheelchair according to claim 1, characterized in that: A handle frame is connected between the sleeve rod (8) and the grip (10), and the handle frame and the sleeve rod (8) are integrally formed.

5. The adjustable leg support for a wheelchair according to claim 1, characterized in that: A sleeve (9) is provided on the side of the rear leg tube (5) facing the front leg tube (4), and the sleeve rod (8) passes through the sleeve (9) and is rotatably connected to the sleeve (9).

6. The adjustable leg support for a wheelchair according to claim 1, characterized in that: The upper part of the rear leg tube (5) is provided with a U-shaped connecting iron (17), and the upper end of the front leg tube (4) is provided with an open joint sleeve (16) arranged perpendicular to the axis of the front leg tube (4). The connecting iron (17) and the open joint sleeve (16) are rotatably connected, and a plastic inner plug (18) is arranged in the open joint sleeve (16).

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