An adjustable leg support device

Abstract

An adjustable leg support device includes a leg support bracket, which is an open isosceles trapezoidal frame with a large opening and a small base. Flexible pads are fixedly connected to the bottom surface and side walls of the trapezoidal frame. These flexible pads are fixedly connected to a rigid plate. Elongated holes are formed on the side walls of the trapezoidal frame, oriented from the opening to the base. The rigid plate is fixed to the side walls of the trapezoidal frame in one of two ways: First, a screw is fixedly connected to the rigid plate, passing through the elongated hole and locked with a nut; second, a screw hole is formed on the rigid plate, and a bolt passes through the elongated hole and is screwed into the screw hole to lock the rigid plate. This device can better accommodate patients.

Description

Technical Field

[0001] This utility model relates to rehabilitation training equipment, and in particular to a leg support device on a rehabilitation training device, belonging to the technical field of rehabilitation training components. Background Technology

[0002] Leg supports are commonly used training devices in rehabilitation training to restrict the patient's legs. Common leg supports include flexible band-like enclosed structures formed by Velcro closures and C-shaped supports. C-shaped supports typically have a flexible lining fixed to their inner wall. Currently, compared to enclosed leg supports, C-shaped supports offer better patient comfort and facilitate leg movement. Both types of leg supports have disclosed technical solutions in Chinese patent applications, such as the leg support of the lower limb exoskeleton rehabilitation training robot disclosed in CN106539665B, which is an enclosed leg support, and CN112773670A. The disclosed calf support structure for gait rehabilitation training and the leg support mechanism for a gait training rehabilitation robot disclosed in CN109846668A both use C-shaped supports. Because the patients, conditions, and severity of the conditions are not the same in rehabilitation training, the leg support needs to be adjustable during training to make the patient feel comfortable. The aforementioned C-shaped support involves a structure that can be adjusted in three dimensions, but its adjustment structure is relatively complex. Moreover, the existing C-shaped support designs use adjustment structures for different leg thicknesses. In rehabilitation training, there are even cases where patients experience gait distortion and deformation, and the existing C-shaped supports cannot adapt well to such adjustments. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems of existing C-shaped footrests and to provide an adjustable leg support device.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: An adjustable leg support device includes a leg support bracket, wherein the leg support bracket is an open isosceles trapezoidal frame with a large opening and a small bottom. Flexible pads are fixedly connected to the bottom surface and side walls of the trapezoidal frame. The flexible pads are fixedly connected to a rigid plate. Elongated holes are opened on the side walls of the trapezoidal frame, with the direction of the elongated holes from the opening to the bottom edge. The rigid plate is fixed to the side walls of the trapezoidal frame in one of the following two ways: First method: a screw is fixedly connected to the rigid plate, and the screw passes through the elongated hole and is locked by a nut; Second method: a screw hole is opened on the rigid plate, and a bolt passes through the elongated hole and is screwed into the screw hole to lock the rigid plate.

[0005] Furthermore, a circular end rod is fixedly connected to the rear end of the bottom edge. The end rod passes through a circular hole in a slider. A through slit is formed from the circular hole to one end of the slider, dividing one end of the slider into an upper half and a lower half. Through holes are formed along the upper half and the lower half. The through hole in the lower half is a threaded hole. The slider slides on the guide rail, which is located below the slider. The slider is limited by the guide rail in the vertical direction. After the locking bolt passes through the through hole in the upper half, it is screwed into the threaded hole and presses the upper half and the lower half against the surface of the guide rail.

[0006] Furthermore, the guide rail is fixedly installed in a square tube, and elongated windows are opened on the other three sides of the square tube except for the side that fixes the guide rail, through which the end rod passes.

[0007] Furthermore, the square tube is slidably connected to the column via a sleeve, and a set screw hole is provided on the sleeve. The sleeve and the column are locked together by a set screw screw screwed into the set screw hole.

[0008] Furthermore, a clamping nut is screwed onto the locking bolt above the upper half. After the locking bolt presses against the surface of the guide rail, the clamping nut is rotated to press the upper half to lock the end rod.

[0009] The positive and beneficial technical effects of this device are as follows: This device is not only three-dimensionally adjustable, but the end rod can also be used as a rotation axis to adjust to adapt to different leg deformations. It can also adjust the distance between the flexible pads to adapt to legs of different thicknesses. The specific implementation method will be described in detail. Attached Figure Description

[0010] Figure 1 This is a partial schematic diagram of the device.

[0011] Figure 2 This is a schematic diagram of the inside of the square tube.

[0012] Figure 3 This is a schematic diagram of a system equipped with a lifting column. Detailed Implementation

[0013] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0014] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: trapezoidal frame; 2: flexible pad; 3: rigid plate; 4: elongated hole; 5: bolt; 6: end rod; 7: slider; 8: round hole; 9: through slot; 10: guide rail; 11: locking bolt; 12: window; 13: square tube; 14: column; 15: sleeve; 16: set screw.

[0015] As shown in the attached figure, an adjustable leg support device includes a leg support bracket, which is an open isosceles trapezoidal frame 1 with a large opening and a small bottom. Flexible pads 2 are fixedly connected to the bottom surface and side walls of the trapezoidal frame 1. The flexible pads are fixedly connected to a rigid plate 3. Elongated holes 4 are formed on the side walls of the trapezoidal frame, with the direction of the holes from the opening to the bottom edge. The rigid plate is fixed to the side walls of the trapezoidal frame in one of two ways: First, a screw is fixedly connected to the rigid plate, and the screw passes through the elongated hole and is locked with a nut; Second, a screw hole is formed on the rigid plate, and a bolt passes through the elongated hole and is screwed into the screw hole to lock the rigid plate. In this embodiment, the second method is used. The bolt is used in the second method. Because a trapezoidal frame is used, the space between the flexible pads on the side walls of the trapezoidal frame can be adjusted by adjusting the position of the rigid plate along the elongated hole to accommodate patients with legs of different thicknesses.

[0016] A circular end rod 6 is fixedly connected to the rear end of the bottom edge. The end rod 6 passes through a circular hole 8 in a slider 7. A through slit 9 is provided from the circular hole to one end of the slider, dividing one end of the slider into an upper half and a lower half. The upper half and the lower half form an elastic opening structure. Through holes are provided along the upper half and the lower half. The through hole in the lower half is a threaded hole. The slider 7 is slidably fitted on the guide rail 10. The guide rail is located below the slider. The slider is limited by the guide rail in the vertical direction. There are many examples in the prior art where the slider is limited by the guide rail in the vertical direction, such as a dovetail slider. After the locking bolt 11 passes through the through hole in the upper half and is screwed into the threaded hole, it presses the upper half and the lower half and then presses against the surface of the guide rail 10. By selecting an appropriate locking bolt length, when the locking bolt presses against the guide rail, the elastic opening structure formed by the upper half and the lower half can be locked at the same time, thus locking and fixing the end rod in the circular hole. Multiple adjustment dimensions can be locked by one locking mechanism. As a further optimization, a clamping nut is screwed onto the locking bolt above the upper half. After the locking bolt rests against the guide rail surface, the clamping nut is rotated to tighten the upper half and lock the end rod. This method eliminates the need for a specific locking bolt length. In this embodiment, the guide rail is fixedly installed in a square tube 13. The square tube has elongated windows 12 on its three sides other than the side that fixes the guide rail, and the end rod passes through the elongated windows.

[0017] The square tube is slidably connected to the column via a sleeve 16, and the square tube and the sleeve are fixedly connected. A set screw hole is provided on the sleeve, and the sleeve and the column are locked together by a set screw 16 screwed into the set screw hole. When using this device, the column can be connected to the corresponding training equipment.

[0018] In this device, by loosening the locking bolt, the slider can be moved left and right on the guide rail, the end rod can be moved forward and backward in the hole, and the end rod can be rotated to achieve rotational adjustment. Multiple degrees of freedom can be locked through one locking position, which is convenient for adjustment.

[0019] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. An adjustable leg rest device comprising a leg rest support, characterised in that: The leg support bracket is an open isosceles trapezoidal bracket, the opening of the trapezoidal bracket is large and the bottom is small, flexible pads are fixedly connected on the bottom surface and the two side walls of the trapezoidal bracket, the flexible pads are fixedly connected on rigid plates, long holes are formed in the two side walls of the trapezoidal bracket, the direction of the long holes is from the opening to the bottom edge, the rigid plates are fixed on the side walls of the trapezoidal bracket in one of the following two ways; the first way is that a screw rod is fixedly connected on the rigid plate, the screw rod is locked through the long hole by a nut; the second way is that a screw hole is formed in the rigid plate, a bolt is screwed in the screw hole to lock the rigid plate.

2. An adjustable leg rest device according to claim 1, wherein: A circular end rod is fixedly connected at the rear end of the bottom edge, the end rod is arranged in a circular hole formed in a sliding block, a through slit is formed from the circular hole to one end of the sliding block, the through slit divides the one end of the sliding block into an upper half and a lower half, through holes are formed along the upper half and the lower half, the through hole of the lower half is a threaded hole, the sliding block is slidingly fitted on a guide rail, a locking bolt is screwed in the threaded hole after passing through the through hole of the upper half, and the upper half and the lower half are pressed and abut against the surface of the guide rail.

3. An adjustable leg rest device according to claim 2, wherein: The guide rail is fixedly installed in a square tube, long windows are formed in the other three surfaces of the square tube except the surface on which the guide rail is fixed, and the end rod passes through the long windows.

4. An adjustable leg rest device according to claim 3, wherein: The square tube is slidingly connected on a stand column through a sleeve, a jackscrew hole is formed in the sleeve, and the sleeve and the stand column are locked by a jackscrew in the jackscrew hole.

5. An adjustable leg rest device according to claim 2, wherein: A pressing nut is screwed on the locking bolt above the upper half, and the locking bolt abuts against the surface of the guide rail, and the pressing nut is rotated to press the upper half to lock the end rod.

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