Single-leg walking aid convenient for adjusting angle of seat cushion

Abstract

The utility model discloses a single-leg walking aid convenient for adjusting the angle of a seat cushion, which belongs to the technical field of walking auxiliary instruments and comprises a front support, a rear support and the seat cushion, one end of the rear support is hinged with the front support, the seat cushion is mounted at the upper end of the front support, and an angle adjusting component is arranged between the seat cushion and the front support. The angle adjusting assembly comprises an arc-shaped pipe arranged on the front support and an arc-shaped column arranged on the cushion, the arc-shaped column is inserted into the arc-shaped pipe in a sliding mode, the cushion is hinged to the front support through a fixing pin, a spring is arranged between the arc-shaped column and the arc-shaped pipe, a plurality of locking holes are formed in the arc-shaped column, a locking column is arranged on the arc-shaped pipe in a pluggable mode, and the locking hole is communicated with the locking column. The locking column can be inserted into any locking hole, the arc-shaped pipe is provided with a fixing cover allowing the locking column to penetrate through, and an elastic piece is arranged between the locking column and the fixing cover. According to the single-leg walking aid, after the single-leg walking aid is adjusted in place, the position can be locked through the locking column, operation is easy and convenient, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of walking aids, and in particular, to a single-leg walking aid with an adjustable seat angle. Background Technology

[0002] A single-leg walking aid is a device that assists in walking. It is mainly used to help people with mobility difficulties (such as the elderly, disabled people, or those recovering from surgery) improve their walking ability and stability, greatly facilitating their lives and work.

[0003] The applicant applied for a utility model patent on March 31, 2022 (authorization announcement number CN217409250U), which discloses a single-leg walking aid, including a front support, a rear support, a damping shock absorber, a seat cushion, and a lower leg support. The front support includes a sleeve and a telescopic rod slidably mounted on the sleeve. The sleeve and the telescopic rod are fixedly connected by a locking member. The rear support is rotatably connected to the sleeve. The two ends of the damping shock absorber are respectively hinged to the sleeve and the rear support. The rear support includes two interconnected and oppositely arranged connecting frames. A universal wheel is installed at the lower end of the sleeve, and a rear wheel is installed at the lower end of the connecting frames. The seat cushion is rotatably mounted on the upper end of the telescopic rod. The seat cushion and the telescopic rod are fixedly connected by a knob. The lower leg support is rotatably connected to the sleeve and fixedly connected to the sleeve by a fixing member. The above technical solutions make the walking aid fit the human body structure better, improving user comfort. At the same time, the damping shock absorber can realize shock absorption and cushioning function, thereby improving the user experience.

[0004] It should be noted that, to improve user comfort, the seat cushion in the above design is rotatable relative to the telescopic rod to adjust its angle. Specifically, a fixed cylinder protrudes from the upper end of the telescopic rod, and two opposing limiting plates protrude from the lower surface of the seat cushion. The fixed cylinder is sandwiched between the two limiting plates, and a stud is used as the knob. The limiting plates and the fixed cylinder are fixedly connected by the stud. Gear grooves are formed on both opposite end faces of the fixed cylinder, and teeth protrude from opposite sidewalls of the two limiting plates. The teeth and grooves engage with each other, and the limiting plates are made of plastic. In use, the teeth and grooves engage, thus restricting the rotation of the fixed cylinder relative to the limiting plates and effectively preventing easy relative rotation between them. To adjust the seat cushion angle, the user can pry open the plastic limiting plates to disengage the teeth and grooves, then adjust the fixed cylinder to the appropriate position, and finally secure it using the knob.

[0005] However, based on user feedback, the inventors of the aforementioned patented single-leg walking aid found that adjusting the seat was cumbersome. First, the limiting plate had to be forcefully pried open to disengage the teeth from the grooves, then the fixing cylinder had to be adjusted into place, and finally the position locked using a knob. This inconvenient operation reduced the user experience. Therefore, the inventors felt it necessary to further improve the structure of the single-leg walking aid to overcome the aforementioned problems encountered by users. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a single-leg walking aid with an adjustable seat angle is provided.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a single-leg walking aid with an adjustable seat angle, comprising a front support, a rear support, and a seat. One end of the rear support is hinged to the front support. A calf support plate is installed on the front support. Universal wheels are installed at the lower ends of both the front and rear supports. The seat is installed on the upper end of the front support. An angle adjustment component is provided between the seat and the front support. The angle adjustment component includes an arc-shaped tube on the front support and an arc-shaped post on the seat. The arc-shaped post is slidably inserted into the arc-shaped tube. The seat and the front support are hinged by a fixing pin. A spring is provided between the arc-shaped post and the arc-shaped tube. Multiple locking holes are provided on the arc-shaped post. A locking pin is insertable and can be inserted into any of the locking holes. A fixing cover for locking through is provided on the arc-shaped tube. An elastic element is provided between the locking pin and the fixing cover.

[0008] Furthermore, one end of the arc-shaped tube is open, the spring is installed inside the arc-shaped tube, one end of the spring abuts against the closed end of the arc-shaped tube, and the other end of the spring abuts against one end of the arc-shaped column.

[0009] Furthermore, the fixing cover has a hollow cylindrical structure, the locking post has a cylindrical structure, and a bearing edge is radially protruding on the side wall of the locking post. One end of the elastic element abuts against the bearing edge, and the other end of the elastic element abuts against the end of the fixing cover away from the arc-shaped tube.

[0010] Furthermore, a latch is fixedly connected to one end of the locking pin that extends outside the fixing cover.

[0011] Furthermore, the centers of the arc-shaped tube and the arc-shaped column are located on the axis of the fixing pin, and a through hole is provided on the side wall of the arc-shaped tube away from the front bracket, and a plurality of locking holes are arranged along the extension direction of the arc-shaped column.

[0012] Furthermore, a wear-resistant sleeve is fixedly installed inside the locking hole.

[0013] Furthermore, a groove is provided on the outer wall of the arc-shaped column along the extension direction of the arc-shaped column, and a limiting post is fixedly installed on the side wall of the arc-shaped tube, with one end of the limiting post extending into the groove.

[0014] Furthermore, the seat cushion includes a seat cushion body and a mounting plate fixedly connected to the lower surface of the seat cushion body. The upper end of the front bracket is provided with a fixing cylinder, and the fixing pin is fixedly mounted on the mounting plate. The fixing cylinder is rotatably sleeved on the outside of the fixing pin.

[0015] The beneficial effects of this utility model are as follows: This utility model is a single-leg walking aid with an adjustable seat angle. When the locking post is released, the seat only needs to be rotated relative to the front support. After the seat is adjusted to the correct position, the locking post will automatically insert into the locking hole under the elastic force of the elastic element, thereby locking the arc-shaped post onto the arc-shaped tube. Compared with the prior art, it is simple and convenient to operate, greatly improving the user experience. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the single-leg walking aid of this utility model, which features an adjustable seat angle.

[0018] Figure 2 yes Figure 1 A magnified view of point A in the single-leg walker shown, which allows for easy adjustment of the seat angle.

[0019] Figure 3 yes Figure 2 The main view;

[0020] Figure 4 yes Figure 3 A cross-sectional view along the middle BB.

[0021] In the diagram: 1. Front support, 11. Fixed cylinder, 2. Rear support, 3. Seat cushion, 31. Seat cushion body, 32. Mounting plate, 4. Lower leg support plate, 5. Casters, 6. Angle adjustment assembly, 61. Arc-shaped tube, 611. Through hole, 612. Limiting post, 62. Arc-shaped post, 621. Locking hole, 622. Wear-resistant sleeve, 623. Slide groove, 63. Locking post, 631. Supporting edge, 632. Grip button, 64. Spring, 65. Fixed cover, 66. Elastic element, 310. Fixed pin, 7. Damping shock absorber. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] Please see Figures 1-4 This utility model provides a single-leg walking aid with an easily adjustable seat angle, including a front support 1, a rear support 2, and a seat 3. One end of the rear support 2 is hinged to the front support 1. A calf support plate 4 is installed on the front support 1. Universal wheels 5 are installed at the lower ends of both the front support 1 and the rear support 2. The seat 3 is installed on the upper end of the front support 1. An angle adjustment component 6 is provided between the seat 3 and the front support 1. The angle adjustment component 6 allows the seat 3 to change its angle with the front support 1 to adapt to the user's needs. In use, the user places the thigh of the leg to be supported on the seat 3 and secures it with straps, while the lower leg rests on the calf support plate 4. The user can then use the walking aid to assist walking.

[0024] In this embodiment, the seat cushion 3 and the front support 1 are rotatably connected by a fixing pin 310. Specifically, the seat cushion 3 includes a seat cushion body 31 and a mounting plate 32 fixedly connected to the lower surface of the seat cushion body 31. The upper surface of the seat cushion body 31 has a curved structure to adapt to the shape of the human thigh. The mounting plate 32 is vertically arranged, and the fixing pin 310 is fixedly installed on the mounting plate 32. A fixing cylinder 11 is protruding from the upper end of the front support 1. The fixing cylinder 11 is rotatably sleeved on the outside of the fixing pin 310, thereby realizing the hinged relationship between the seat cushion 3 and the front support 1. Furthermore, there are two mounting plates 32, and the fixing pin 310 is fixedly connected between the two mounting plates 32, which improves the connection strength between the fixing pin 310 and the mounting plate 32. In addition, the front support 1 is a hollow aluminum alloy tube, and the fixing cylinder 11 is a solid structure. Connecting the fixing pin 310 to the fixing cylinder 11 avoids the problem of low strength when the hollow front support 1 is connected to the fixing pin 310.

[0025] The angle adjustment assembly 6 includes an arc-shaped tube 61 and an arc-shaped column 62. The arc-shaped tube 61 is fixedly mounted on the front support 1, and the arc-shaped column 62 is fixedly mounted on the seat cushion 3. The arc-shaped column 62 is inserted into the arc-shaped tube 61 and can slide relative to the arc-shaped tube 61. The centers of the arc-shaped tube 61 and the arc-shaped column 62 are located on the axis of the fixing pin 310. Thus, when the seat cushion 3 rotates relative to the front support 1 around the fixing pin 310, the arc-shaped column 62 slides relative to the fixing tube 61.

[0026] The arc-shaped tube 61 is a hollow tube structure with one end open, while the arc-shaped column 62 is a solid column. A locking pin 63 is detachably installed on the arc-shaped tube 61. The locking pin 63 passes through the side wall of the arc-shaped tube 61, extends into the arc-shaped tube 61, and can be inserted into the arc-shaped column 62. At this time, under the action of the locking pin 63, the arc-shaped column 62 cannot slide relative to the arc-shaped tube 61. Thus, the position of the seat cushion 3 is locked, and the seat cushion 3 cannot rotate relative to the front support 1.

[0027] Specifically, a through hole 611 is provided on the side wall of the arc-shaped tube 61 away from the front bracket 1, and multiple locking holes 621 are provided on the side wall of the arc-shaped column 62 along the extension direction of the arc-shaped column 62. The through hole 611 can be aligned with any of the locking holes 621. During adjustment, the user pulls out the locking pin 63, so that one end of the locking pin 63 is pulled out of the locking hole 621. At this time, the user rotates the seat 3 relative to the front bracket 1. After adjustment, the user inserts the locking pin 63 inward, so that one end of the locking pin 63 is inserted into the corresponding locking hole 621, thereby achieving locking. Furthermore, a wear-resistant sleeve 622 is fixedly installed in the locking hole 621. One end of the locking pin 63 is inserted into the wear-resistant sleeve 622. The wear-resistant sleeve 622 has good wear resistance and can effectively prevent the locking hole 621 from being worn. In this embodiment, the wear-resistant sleeve 622 is made of polytetrafluoroethylene material.

[0028] A spring 64 is installed inside the arc-shaped tube 61. One end of the spring 64 abuts against the closed end of the arc-shaped tube 61, and the other end of the spring 64 abuts against one end of the arc-shaped column 62. In this way, the arc-shaped column 62 is always subjected to the outward pushing force of the spring 64, so that the arc-shaped column 62 is always in a higher position. When adjusting the angle of the seat cushion 3, the user only needs to lean forward and press the seat cushion 3 with his thighs down. After the seat cushion 3 moves to the desired position, the arc-shaped column 62 can be locked on the arc-shaped tube 61 by locking 63, which greatly facilitates the user's operation.

[0029] Furthermore, to prevent the arc-shaped column 62 from completely sliding out of the open end of the arc-shaped tube 61 and to prevent the two from separating, a groove 623 is provided on the outer wall of the arc-shaped column 62 along its extension direction. The end of the groove 623 does not penetrate the side wall of the end of the arc-shaped column 62. A limiting post 612 is fixedly installed on the side wall of the arc-shaped tube 61, with one end of the limiting post 612 extending into the groove 623. When the arc-shaped column 62 slides along the arc-shaped tube 61, the limiting post 612 simultaneously slides relative to the groove 623. When the spring 64 is in its natural state, the limiting post 612 remains in a high position under the action of elastic force. At this time, the limiting post 612 abuts against one end of the groove 623, thereby effectively preventing the arc-shaped column 62 from sliding out of the arc-shaped tube 61.

[0030] In a preferred embodiment, a fixing cover 65 is fixedly installed on the arc-shaped tube 61, and a locking pin 63 slidably passes through the fixing cover 65. An elastic element 66 is provided between the locking pin 63 and the fixing cover 65, telescopically along the direction of movement of the locking pin 63. Under the elastic force of the elastic element 66, the locking pin 63 tends to move inward, so that one end of the locking pin 63 is inserted into the locking hole 621. Only when the locking pin 63 is pulled outward to overcome the elastic force of the elastic element 66 can the locking pin 63 move and disengage from the locking hole 621. By providing the elastic element 66, the situation where the locking pin 63 easily disengages from the locking hole 621 is effectively prevented.

[0031] Specifically, the fixing cover 65 has a hollow cylindrical structure, the locking post 63 has a cylindrical structure, and a bearing flange 631 is radially protruding on the side wall of the locking post 63. One end of the elastic member 66 abuts against the bearing flange 631, and the other end of the elastic member 66 abuts against the end of the fixing cover 65 away from the arc-shaped tube 61. In this embodiment, the elastic member 66 is a compression spring sleeved on the outside of the locking post 63.

[0032] Furthermore, a gripper 632 is fixedly connected to one end of the locking post 63 that extends to the outside of the fixing cover 65. The gripper 632 is for the user to grip and move the locking post 63.

[0033] The single-leg walking aid of this utility model with adjustable seat angle also includes a damping shock absorber 7 to achieve shock absorption. The damping shock absorber 7 is disposed between the front support 1 and the rear support 2. Its connection relationship with the front support 1 and the rear support 2, as well as the structure of the damping shock absorber 7 itself, are the same as those of Chinese Patent No. CN 217409250 U (Patent title: A Single-Leg Walking Aid), and will not be described in detail here.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A single-leg walking aid with an adjustable seat angle, comprising a front support, a rear support, and a seat, wherein one end of the rear support is hinged to the front support, a leg rest is mounted on the front support, casters are mounted on the lower ends of both the front and rear supports, and the seat is mounted on the upper end of the front support, characterized in that: An angle adjustment assembly is provided between the seat cushion and the front support. The angle adjustment assembly includes an arc-shaped tube on the front support and an arc-shaped post on the seat cushion. The arc-shaped post can be slidably inserted into the arc-shaped tube. The seat cushion and the front support are hinged by a fixing pin. A spring is provided between the arc-shaped post and the arc-shaped tube. Multiple locking holes are provided on the arc-shaped post. A locking post is pluggable on the arc-shaped tube. The locking post can be inserted into any of the locking holes. A fixing cover is provided on the arc-shaped tube for locking through. An elastic element is provided between the locking post and the fixing cover.

2. The single-leg walking aid with adjustable seat angle as described in claim 1, characterized in that: One end of the arc-shaped tube is open, and the spring is installed inside the arc-shaped tube. One end of the spring abuts against the closed end of the arc-shaped tube, and the other end of the spring abuts against one end of the arc-shaped column.

3. The single-leg walking aid with adjustable seat angle as described in claim 1, characterized in that: The fixing cover has a hollow cylindrical structure, the locking post has a cylindrical structure, and a supporting edge is radially protruding on the side wall of the locking post. One end of the elastic element abuts against the supporting edge, and the other end of the elastic element abuts against the end of the fixing cover away from the arc-shaped tube.

4. The single-leg walking aid with adjustable seat angle as described in claim 3, characterized in that: A latch is fixedly connected to one end of the locking pin that extends outside the fixing cover.

5. The single-leg walking aid with adjustable seat angle as described in claim 1, characterized in that: The centers of the arc-shaped tube and the arc-shaped column are located on the axis of the fixing pin. A through hole is provided on the side wall of the arc-shaped tube away from the front bracket, and multiple locking holes are arranged along the extension direction of the arc-shaped column.

6. The single-leg walking aid with adjustable seat angle as described in claim 5, characterized in that: A wear-resistant sleeve is fixedly installed inside the locking hole.

7. The single-leg walking aid with adjustable seat angle as described in claim 1, characterized in that: A groove is provided on the outer wall of the arc-shaped column along the extension direction of the arc-shaped column, and a limiting post is fixedly installed on the side wall of the arc-shaped tube, with one end of the limiting post extending into the groove.

8. The single-leg walking aid with adjustable seat angle as described in claim 1, characterized in that: The seat cushion includes a seat cushion body and a mounting plate fixedly connected to the lower surface of the seat cushion body. The upper end of the front bracket is provided with a fixing cylinder. The fixing pin is fixedly installed on the mounting plate, and the fixing cylinder is rotatably sleeved on the outside of the fixing pin.

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