Leg bending and lifting and standing auxiliary device

Abstract

The utility model discloses a leg bending and lifting and standing assisting device, which belongs to the technical field of nursing and comprises a support, a seat disc, a back lifting frame, a leg support and a foot support. The front end of the seat disc is pivotally connected with the front end of the top of the bracket, and a standing push rod is connected between the seat disc and the bracket; the back lifting frame is pivotally connected to the rear end of the seat disc, and a back lifting push rod is connected between the seat disc and the back lifting frame; the foot support is horizontally arranged, and the foot support is connected with the front end of the top of the support through a parallelogram connecting rod mechanism; the leg support is fixed on the parallelogram connecting rod mechanism, and a leg bending push rod is further connected between the leg support and the bracket. The back lifting frame can be driven by the back lifting push rod to turn over relative to the seat disc, the seat disc can be driven by the standing push rod to turn over relative to the support, the leg support can be driven by the leg bending push rod to turn over relative to the support, and therefore the back lifting frame, the seat disc and the leg support can be turned over, and the functions of lying, standing, leg bending and lifting and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rehabilitation and nursing, in particular to a leg-lifting and standing assisting device. Background Art

[0002] For elderly people with limited mobility, they often need to lie down or sit. However, for rehabilitation purposes, they cannot always remain in a lying or sitting position. They also need to move regularly to promote blood circulation. When necessary, they also need to be able to stand up.

[0003] However, in the prior art, for example, the Chinese utility model patent with the public number CN218979529U discloses a nursing bed, which, although it can support the user's legs to switch between raising and bending the legs, and can support the user to raise his back, cannot assist the user in standing. The transition from sitting to standing requires the user's own efforts or the help of a caregiver. Summary of the Invention

[0004] In view of the problem that the nursing equipment in the prior art cannot assist the user to stand, the purpose of the present utility model is to provide a leg-lifting and standing assistance device, so as to at least partially solve the above problem.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A leg-bending and standing assisting device comprises a bracket, a seat pan, a back-lifting frame, a leg support and a foot support; the front end of the seat pan is pivotally connected to the top front end of the bracket, and a standing push rod is connected between the seat pan and the bracket; the back-lifting frame is pivotally connected to the rear end of the seat pan, and a back-lifting push rod is connected between the seat pan and the back-lifting frame; the foot support is arranged horizontally, and the foot support is connected to the top front end of the bracket via a parallelogram linkage mechanism; the leg support is fixed on the parallelogram linkage mechanism, and a leg-bending push rod is also connected between the leg support and the bracket.

[0007] In some preferred embodiments, there are two parallelogram linkage mechanisms and they are spaced apart along the tilt axis of the foot support.

[0008] In some preferred embodiments, a support frame is provided on one side of the bottom surface of the foot support.

[0009] In some preferred embodiments, the seat pan and the leg support are both pivotally connected to a standing hinge shaft provided at the top front end of the bracket.

[0010] In some preferred embodiments, a controller is further included, and the controller is electrically connected to the bent-leg push bar, the back-lift push bar, and the standing push bar.

[0011] In some preferred embodiments, the bent-leg push rod, the back-lifting push rod, and the standing push rod are pneumatic cylinders, hydraulic cylinders, or electric cylinders.

[0012] In some preferred embodiments, the controller is an ECU controller.

[0013] By adopting the above technical solution, the beneficial effects of the utility model are: the utility model can drive the back-lifting frame to flip relative to the seat pan through the back-lifting push rod, can drive the seat pan to flip relative to the bracket through the standing push rod, and can drive the leg support to flip relative to the bracket through the bent-leg push rod, so that the back-lifting frame, the seat pan and the leg support can all be flipped, realizing the functions of overall horizontalization (supporting lying flat), overall tilting (supporting standing), partial flipping (supporting sitting and bent-leg lifting), etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the utility model of the bent leg raising and standing assisting device.

[0015] Figure 2 This is a schematic structural diagram of the utility model of the mid-leg lifting and standing assisting device.

[0016] In the figure: 1- bracket, 2- seat plate, 3- back lifting frame, 4- leg support, 5- foot support, 6- standing hinge axis, 7- standing push rod, 8- back lifting push rod, 9- parallelogram linkage mechanism, 10- bent leg push rod, 11- support frame, 12- controller. DETAILED DESCRIPTION

[0017] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0018] It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the description of the structure of the present invention shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0019] The "first" and "second" in this technical solution are only used to distinguish the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have any ranking, size comparison, or other meanings.

[0020] In addition, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two structures. Those skilled in the art can understand the specific meanings of the above terms in this utility model based on the overall concept of this utility model and the specific context of this solution.

[0021] Example

[0022] A leg-lifting and standing assisting device, which can be applied to a bed chair (or bed chair robot), such as Figure 1 and Figure 2 As shown, the device includes a bracket 1 and a seat pan 2, a backrest frame 3, a leg support 4 and a foot support 5 arranged in sequence along the length direction, where the length direction refers to the length direction of the bed chair.

[0023] The bracket 1 is the bed frame of the bed chair. The seat pan 2 is roughly planar in structure, and can be configured in a plate or frame shape according to the actual application scenario. A standing hinge shaft 6 is fixedly installed on the front end of the top face of the bracket 1, and the front end of the seat pan 2 (i.e., the end adjacent to the leg support 4) is pivotally connected to the front end of the top face of the bracket 1 through the standing hinge shaft 6. In addition, a standing push rod 7 is connected between the seat pan 2 and the bracket 1, and the two ends of the standing push rod 7 are respectively pivotally connected to one side of the bottom surface of the seat pan 2 and the bracket 1 through a pin or a shaft. The standing push rod 7 can be configured as a pneumatic cylinder, a hydraulic cylinder or an electric cylinder, so that the seat pan 2 can be driven to flip relative to the bracket 1 through the telescopic movement of the standing push rod 7, so that the arrangement angle of the seat pan 2 relative to the bracket 1 changes. This angle refers to the angle between the top surface of the seat pan 2 and the horizontal plane where the top surface of the bracket 1 is located. When the angle is 180°, the seat pan 2 is arranged horizontally and is completely supported by the top surface of the bracket 1. At this time, the standing push rod 7 is usually in a retracted state. When the standing push rod 7 is extended, the seat pan 2 rotates around the standing hinge axis 6, that is, the above-mentioned angle decreases accordingly.

[0024] The lifting frame 3 is also roughly planar in structure and can be configured as either a plate or a frame, depending on the actual application scenario. The front end of the lifting frame 3 is pivotally connected to the rear end of the seat pan 2, and the axis of rotation of the lifting frame 3 relative to the seat pan 2 is parallel to the axis of rotation of the seat pan 2 relative to the bracket 1. Furthermore, a lifting push rod 8 is connected between the bottom surface of the seat pan 2 and the bottom surface of the lifting frame 3. The two ends of the lifting push rod 8 are pivotally connected to the bottom surface of the seat pan 2 and the bottom surface of the lifting frame 3, respectively, via pins or shafts. The lifting push rod 8 can also be configured as a pneumatic cylinder, a hydraulic cylinder or an electric cylinder. In this way, the lifting frame 3 can be driven to flip relative to the seat plate 2 through the telescopic movement of the lifting push rod 8, so that the arrangement angle of the lifting frame 3 relative to the seat plate 2 changes. The angle refers to the angle between the top surface of the lifting frame 3 and the top surface of the seat plate 2. The maximum angle is 180 degrees. At this time, the lifting push rod 8 is usually in a retracted state. When the lifting push rod 8 is extended, the lifting frame 3 flips relative to the seat plate 2, that is, the angle between the two decreases accordingly, and the lifting operation is achieved. Usually, a limit block is fixed at a position slightly below the rear end of the seat plate 2. When the bottom surface of the lifting frame 3 contacts the limit block, the maximum angle of 180 degrees is reached, thereby preventing the lifting frame 3 from further expanding its flip angle relative to the seat plate 2 by the limit block, avoiding situations that are not conducive to use.

[0025] The foot support 5 is also generally planar and can be configured as a plate or frame, depending on the actual application scenario. The foot support 5 is arranged horizontally, located in front of the seat pan 2. The rear end of the foot support 5 is connected to the front end of the bracket 1 via a parallelogram linkage 9. It will be readily understood that the parallelogram linkage 9 is typically configured in pairs, connected on either side of the foot support 5 along its width.

[0026] The leg support 4 is fixedly mounted on the parallelogram linkage 9. For example, the two sides of the leg support 4 in the width direction are respectively fixedly connected to two parallelogram linkages 9 (the linkages on the upper side). In this way, when the parallelogram linkage 9 moves, the leg support 4 changes its tilt angle accordingly, thereby supporting the legs. It is easy to understand that the two sides of the leg support 4 in the width direction are directly used as components of the two parallelogram linkages 9 (that is, the two ends of the leg support 4 in the width direction are respectively used as a linkage). Of course, the foot support 5 and the bracket 1 can also be used as two components of the parallelogram linkage 9, that is, the parallelogram linkage 9 can actually have only one linkage component. Accordingly, the leg support 4 is also pivotally connected to the bracket 1 via the above-mentioned standing hinge shaft 6.

[0027] In addition, a bent leg push rod 10 is connected between the leg support 4 and the frame 1. The two ends of the bent leg push rod 10 are respectively pivotally connected to one side of the bottom surface of the leg support 4 and the frame 1 via a pin or shaft. The bent leg push rod 10 can be configured as a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. In this way, the telescopic movement of the bent leg push rod 10 can drive the movement of the parallelogram linkage 9, thereby changing the inclination angle of the leg support 4 while maintaining the foot support 5 horizontal. It is easy to understand that because the leg support 4 is fixedly connected to the parallelogram linkage 9, the two ends of the bent leg push rod 10 can also be pivotally connected to the frame 1 and the parallelogram linkage 9 (the connecting rod member therein).

[0028] Thus, when the leg-bending push rod 10 is extended, the footrest 5 remains horizontal while flipping upward until it reaches the same height as the seat pan 2 (which remains horizontal). The legrest 4 is then connected between the footrest 5 and the seat pan 2, and is also approximately level with the footrest 5. This allows the user to lie flat or sit with legs straight on the device provided by this embodiment. When the leg-bending push rod 10 begins to retract, the footrest 5 remains horizontal while flipping downward, and the front end of the legrest 4 tilts downward, transforming the user's leg position from straight to bent. During this leg position transition, the footrest 5 remains horizontal.

[0029] A support frame 11 is provided on one side of the bottom surface of the leg support 5. This supports the leg support 5 after it is lowered, thereby preventing the leg support 5 from tipping over when subjected to heavy pressure. It will be readily understood that when the legs are bent, the support frame 11 typically does not contact the ground; for example, the support frame 11 may be a few to several dozen millimeters above the ground. When the device tilts, the support frame 11 contacts the ground, providing support and preventing tipping.

[0030] The device further includes a controller 12 , which is electrically connected to the bent-leg push rod 10 and the standing push rod 7 via wires. The controller 12 is configured as an ECU controller.

[0031] The use process of the bent leg raising and standing assist device provided by the embodiment of the utility model is as follows:

[0032] The device has three operating positions: lying down, bending legs, and standing. In the lying down position, the standing push rod 7 is retracted, the back-lifting push rod 8 is retracted, and the leg-bending push rod 10 is extended, so that the back-lifting frame 3, seat pan 2, leg support 4, and foot support 5 are all horizontal and in the same plane, allowing the user to lie flat or sit with legs straight.

[0033] In the reclining position, while maintaining the extended and retracted positions of the standing push rod 7 and the back-lifting push rod 8, the leg-bending push rod 10 is retracted, thereby allowing the foot support 5 to tilt downward while remaining horizontal. Accordingly, the front end of the leg support 4 tilts downward, and the user's leg posture changes from straight to bent, and the device enters the bent-leg position. It will be readily understood that in the bent-leg position, the standing push rod 7 can also be used to drive the back-lifting frame 3 to tilt, allowing the user to perform a back-lifting operation, thereby facilitating the user's ability to maintain a sitting position.

[0034] On the basis of lying down state, while only keeping the standing push rod 7 in the telescopic state unchanged, the back-lifting push rod 8 is extended, so that the seat pan 2 is flipped around the standing hinge axis 6, that is, the rear end of the seat pan 2 (together with the back-lifting frame 3) is flipped upward, and at the same time, the bent-leg push rod 10 is contracted, so that the foot support 5 is flipped downward while maintaining a horizontal state, and the front end of the corresponding leg support 4 will tilt downward, and the user's leg posture will change from straight legs to bent legs. By coordinating the extension action of the back-lifting push rod 8 and the contraction action of the bent-leg push rod 10, it is possible to ensure that the leg support 4 and the seat pan 2 (together with the back-lifting frame 3) continue to remain in the same plane, and the plane gradually tilts with the action of the back-lifting push rod 8 and the bent-leg push rod 10, thereby assisting the user to stand up.

[0035] It is easy to understand that the lying state, bent-leg state and standing state of the device can be switched among each other according to usage.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A device for assisting leg lifting and standing, characterized by: It includes a bracket, a seat pan, a back-lifting frame, a leg support and a foot support; the front end of the seat pan is pivotally connected to the top front end of the bracket, and a standing push rod is connected between the seat pan and the bracket; the back-lifting frame is pivotally connected to the rear end of the seat pan, and a back-lifting push rod is connected between the seat pan and the back-lifting frame; the foot support is arranged horizontally, and the foot support is connected to the top front end of the bracket through a parallelogram linkage mechanism; the leg support is fixed on the parallelogram linkage mechanism, and a bent-leg push rod is also connected between the leg support and the bracket.

2. The leg-lifting and standing assisting device according to claim 1, characterized in that: There are two parallelogram linkage mechanisms and they are spaced apart along the tilt axis of the foot support.

3. The leg-lifting and standing assisting device according to claim 1, characterized in that: A support frame is provided on one side of the bottom surface of the foot support.

4. The leg-lifting and standing assisting device according to claim 1, characterized in that: The seat pan and the leg support are both pivotally connected to a standing hinge shaft arranged at the top front end of the bracket.

5. The leg-lifting and standing assisting device according to claim 1, characterized in that: The utility model further comprises a controller, wherein the controller is electrically connected to the leg curling push rod, the back raising push rod and the standing push rod.

6. The leg-lifting and standing assisting device according to claim 5, characterized in that: The leg bending push rod, the back raising push rod and the standing push rod are air cylinders, hydraulic cylinders or electric cylinders.

7. The leg-lifting and standing assisting device according to claim 5, characterized in that: The controller is an ECU controller.

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