Sitting-up assisting mechanism and defecation device

By designing a sitting-up assist mechanism consisting of a hinged seat, base frame, linkage assembly, and support frame, and using a gas spring to drive the support frame to rise and fall, the problems of inconvenient installation and obstruction of toilet use in existing technologies are solved, achieving a toilet assistance effect that is easy to install and provides stable support.

CN223994820UActive Publication Date: 2026-03-17NINGBO FIRST HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-10
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing sitting-up assistive devices are inconvenient to install and hinder users from using the toilet normally, especially among elderly people living alone, patients with joint pain, postoperative recovery patients, pregnant women, and people with disabilities, who face difficulties in getting up and using the toilet and are at risk of falling.

Method used

A sitting and standing assistance mechanism was designed, comprising a hinged base, a base frame, a linkage assembly, and a support frame. The linkage assembly is driven by a gas spring to swing, thereby raising and lowering the support frame to assist the user in sitting down and standing up. The entire mechanism can be rotated so as not to affect toileting activities. It is applicable to toilet devices without requiring modification of the original toilet.

Benefits of technology

It is easy to install and use, provides stable support, assists the elderly and people with mobility impairments in sitting up and getting up when using the toilet, does not affect normal toilet activities, adapts to different height ranges, and improves the user's autonomy and safety.

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Abstract

The sitting-up auxiliary mechanism comprises a hinge seat, a bottom frame, a connecting rod assembly and a supporting frame, the bottom frame, the connecting rod assembly and the supporting frame are sequentially arranged from bottom to top, the bottom frame is hinged to the hinge seat, the first end of the connecting rod assembly is hinged to the bottom frame, and the second end of the connecting rod assembly is hinged to the supporting frame; one end of the gas spring is hinged to the bottom frame, the other end of the gas spring is hinged to the middle of the connecting rod assembly, the middle of the connecting rod assembly is located between the first end and the second end of the connecting rod assembly, and the gas spring drives the connecting rod assembly to swing so that the supporting frame can ascend and descend. According to the device, the connecting rod assembly can be driven to swing through stretching out and drawing back of the air spring so that the supporting frame can ascend and descend, when a user is supported on the supporting frame, sitting down and getting up can be assisted, and home movement of the user is facilitated; when the sitting-up assisting mechanism does not need to be used, the sitting-up assisting mechanism can be rotated to one side, so that normal defecation and other actions of the user are not affected.
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Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a sitting-up assist mechanism and a toileting device. Background Technology

[0002] Currently, China's elderly population is increasing. Due to physiological aging, the elderly experience muscle atrophy and a decline in mobility. Insufficient leg and abdominal strength often causes problems for the elderly in getting up and sitting down. In individuals living alone, the lack of assistance with daily life and the resulting difficulties in getting up and sitting down can significantly impact their home life. Furthermore, for those with joint pain, post-operative recovery patients, pregnant women, and people with disabilities, there are significant challenges in getting up from squatting / sitting on the toilet, increasing the risk of falls.

[0003] In related technologies, auxiliary devices for toilet seats require modifications to the original toilet seat, which is inconvenient to install, and the auxiliary devices may hinder the user's normal toilet use. Utility Model Content

[0004] The purpose of this application is to provide a sitting-up assist mechanism and a toilet device to solve the problems that sitting-up assist mechanisms are inconvenient to install and hinder users from using the toilet normally.

[0005] To achieve the objectives of this application, the following technical solution is provided:

[0006] In a first aspect, this application provides a sitting-up assist mechanism, comprising:

[0007] Hinge mount;

[0008] The base frame, connecting rod assembly, and support frame are arranged sequentially from bottom to top. The base frame is hinged to the hinge seat, the first end of the connecting rod assembly is hinged to the base frame, and the second end of the connecting rod assembly is hinged to the support frame.

[0009] A gas spring is provided, one end of which is hinged to the base frame, and the other end of which is hinged to the middle of the connecting rod assembly. The middle of the connecting rod assembly is located between the first and second ends of the connecting rod assembly. The gas spring drives the connecting rod assembly to swing, thereby raising and lowering the support frame.

[0010] In one embodiment, the base frame includes a first rod and a second rod, one end of the first rod is hinged to the hinge seat, the other end of the first rod is connected to one end of the second rod, the other end of the second rod is connected to the connecting rod assembly, and one end of the gas spring is hinged to the first rod.

[0011] In one embodiment, the gas spring includes a cylinder and a piston rod. The cylinder is hinged to the first rod member, one end of the piston rod is placed inside the cylinder and can move axially along the cylinder, and the other end of the piston rod is hinged to the connecting rod assembly.

[0012] In one embodiment, the base frame further includes a third member and a fourth member, wherein the first member, the second member, the third member, and the fourth member are sequentially connected to form a quadrilateral structure;

[0013] The linkage assembly includes a first linkage and a second linkage. One end of the first linkage and one end of the second linkage are hinged to the third linkage at a distance from each other. The other ends of the first linkage and the other ends of the second linkage are hinged to the support frame at a distance from each other.

[0014] The end of the piston rod away from the cylinder is hinged to the first connecting rod.

[0015] In one embodiment, the support frame includes a fifth rod, an underarm support rod, and a hand support rod. The first connecting rod and the second connecting rod are both hinged to the fifth rod. The underarm support rod is fixedly connected to the fifth rod, and the hand support rod is fixedly connected to the underarm support rod.

[0016] In one embodiment, a pull-wire switch is provided on the hand support rod, and the pull-wire switch is connected to the gas spring.

[0017] In one embodiment, an armpit support is provided at the end of the armpit support rod away from the fifth rod.

[0018] In one embodiment, a caster wheel is connected to the end of the first rod away from the hinge seat.

[0019] Secondly, this application also provides a toilet device, including a toilet seat and a sitting-up assist mechanism as described in any of the various embodiments of the first aspect, wherein the sitting-up assist mechanism is disposed on one side of the toilet seat and the hinge seat is fixed to a wall or the ground.

[0020] In one embodiment, at least two sitting-up assist mechanisms are provided, with the two sitting-up assist mechanisms respectively located on both sides of the toilet. The ends of the base frames of the two sitting-up assist mechanisms away from the hinge seat can be close to or far from each other.

[0021] Compared with the prior art, this application has at least the following beneficial effects:

[0022] 1. In this application, a base frame, a linkage assembly, and a support frame are arranged sequentially from bottom to top. The two ends of the linkage assembly are hinged to the base frame and the support frame, respectively, and the two ends of the gas spring are hinged to the base frame and the linkage assembly, respectively. By extending and retracting the gas spring, the linkage assembly can be driven to swing, so that the support frame can be raised and lowered. When the user supports the support frame, it can assist in sitting down and getting up, which facilitates the user's home activities.

[0023] 2. In this application, by hinged between the base frame and the hinge seat, the base frame, linkage assembly, support frame and gas spring can be rotated to one side as a whole when the sitting-up assist mechanism is not needed, so as not to affect the user's normal toileting and other actions.

[0024] 3. In this application, the entire sitting-up assist mechanism can be installed via a hinged seat. When applied to a toilet device, it does not require modification of the original toilet and is easy to install and remove. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a front view of a toilet device according to one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of a sitting-up assist mechanism according to one embodiment of this application;

[0028] Figure 3 This is a structural schematic diagram of another state of the sitting-up assist mechanism according to one embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Toilet seat; 200. Sitting-up assist mechanism; 210. Hinge seat; 220. Base frame; 221. First rod; 222. Second rod; 223. Third rod; 224. Fourth rod; 230. Linkage assembly; 231. First link; 232. Second link; 240. Support frame; 241. Fifth rod; 242. Underarm support rod; 243. Hand support rod; 244. Pull-cord switch; 245. Underarm support; 250. Gas spring; 251. Cylinder; 252. Piston rod; 260. Caster wheel. Detailed Implementation

[0031] The following are specific embodiments of this application, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments.

[0032] refer to Figure 1 This application provides a toilet device, including a toilet seat 100 and a sitting-up assist mechanism 200, the sitting-up assist mechanism 200 being disposed on one side of the toilet seat 100. Combining the toilet seat 100 with the sitting-up assist mechanism 200 can help the user move from a sitting position to a standing position or from the toilet seat 100 to other positions when using the toilet.

[0033] Specifically, it can be applied in various scenarios such as medical rehabilitation centers, age-friendly housing, and public restrooms. In these scenarios, users' needs are not only for using the toilet, but also for safe transfer and standing assistance. For example, for elderly people with limited mobility, the sitting-up assistive device 200 can provide support to help them transfer from a wheelchair to a commode 100 and then stand up safely.

[0034] refer to Figure 1 , Figure 2 and Figure 3 This application provides a sitting-up assist mechanism 200, including a hinge seat 210, a base frame 220, a linkage assembly 230, a support frame 240, and a gas spring 250.

[0035] The hinge seat 210 is fixed to the wall or the ground. The entire sitting-up assist mechanism 200 can be installed through the hinge seat 210 without modifying the original toilet 100, making it easy to install and remove.

[0036] The base frame 220, the connecting rod assembly 230, and the support frame 240 are arranged sequentially from bottom to top. The base frame 220 is hinged to the hinge seat 210. The first end of the connecting rod assembly 230 is hinged to the base frame 220, and the second end of the connecting rod assembly 230 is hinged to the support frame 240. A gas spring 250 is provided, with one end of the gas spring 250 hinged to the base frame 220 and the other end of the gas spring 250 hinged to the middle of the connecting rod assembly 230. The middle of the connecting rod assembly 230 is located between the first end and the second end of the connecting rod assembly 230. The gas spring 250 drives the connecting rod assembly 230 to swing, thereby raising and lowering the support frame 240. The base frame 220, the linkage assembly 230, and the support frame 240 are arranged sequentially from bottom to top. The two ends of the linkage assembly 230 are hinged to the base frame 220 and the support frame 240, respectively. The two ends of the gas spring 250 are hinged to the base frame 220 and the linkage assembly 230, respectively. By extending and retracting the gas spring 250, the linkage assembly 230 can be driven to swing, so that the support frame 240 can be raised and lowered. When the user is supported on the support frame 240, it can assist in sitting down and getting up, making it convenient for the user to use the toilet and other home activities.

[0037] Among them, by hinged between the base frame 220 and the hinge seat 210, when the sitting-up assist mechanism 200 is not needed, the base frame 220, the connecting rod assembly 230, the support frame 240 and the gas spring 250 can be rotated as a whole to one side of the toilet 100 so as not to affect the user's normal toilet activities.

[0038] In one embodiment, at least two sitting-up assist mechanisms 200 are provided, with each of the two sitting-up assist mechanisms 200 respectively disposed on both sides of the toilet seat 100. The ends of the base frames 220 of the two sitting-up assist mechanisms 200 away from the hinge seat 210 can be brought together or moved away from each other. Providing assist mechanisms on both sides of the toilet seat 100 can provide more stable support, allowing the user to receive assistance from both sides, resulting in better balance than from one side. This is especially suitable for situations requiring more support, such as rehabilitation patients or those with weak muscles.

[0039] The base frame 220 includes a first rod 221 and a second rod 222. One end of the first rod 221 is hinged to the hinge seat 210, and the other end of the first rod 221 is connected to one end of the second rod 222. The other end of the second rod 222 is connected to the connecting rod assembly 230. One end of the gas spring 250 is hinged to the first rod 221. The first rod 221 is directly connected to the hinge seat 210, and the second rod 222, as an extension, is connected to the connecting rod assembly 230, which can distribute the load transmitted by the support frame 240 and avoid single-point stress concentration. By adjusting the length ratio or connection angle of the first rod 221 and the second rod 222, the effective working length of the base frame 220 can be changed to adapt to the installation size limitations of different toilet seats 100. One end of the gas spring 250 is hinged to the first rod 221, which is located at the bottom of the base frame 220. This allows the gas spring 250 to have a larger extension range, thereby driving the support frame 240 to achieve a larger lifting range to accommodate users of a wider height range.

[0040] The first rod 221, at the end furthest from the hinge seat 210, is connected to a caster wheel 260. When the base frame 220 rotates around the hinge seat 210, the caster wheel 260, through its contact with the ground, provides multiple support points at the bottom of the sitting-up assist mechanism 200, improving the stability of support for the user. Furthermore, the caster wheel 260 on the base frame 220 makes rotation of the base frame 220 easier. Simultaneously, the caster wheel 260 with a locking function maintains stability in a fixed position, preventing slippage.

[0041] The gas spring 250 includes a cylinder 251 and a piston rod 252. The cylinder 251 is hinged to a first rod 221. One end of the piston rod 252 is located inside the cylinder 251 and can move axially along the cylinder 251. The other end of the piston rod 252 is hinged to a connecting rod assembly 230. The cylinder 251 of the gas spring 250 is hinged to the first rod 221, rather than being directly fixed to the base frame 220 or the connecting rod assembly 230, making the direction of action of the gas spring 250 more flexible and adaptable to different movement trajectories of the support frame 240. The hinged connection of the piston rod 252 to the connecting rod assembly 230 ensures that during the movement of the support frame 240, the force of the gas spring 250 always acts in the direction of the connecting rod assembly 230, improving transmission efficiency.

[0042] During the descent of the support frame 240, the piston rod 252 of the gas spring 250 is compressed, which can store part of the gravitational potential energy as gas compression energy; the gas compression energy can provide power for the support frame 240 to rise, thereby assisting the user in sitting down and standing up.

[0043] In this embodiment, the base frame 220 further includes a third member 223 and a fourth member 224. The first member 221, the second member 222, the third member 223 and the fourth member 224 are connected in sequence to form a quadrilateral structure. The quadrilateral base frame 220 forms a closed structure, which can withstand greater loads and provide more stable support.

[0044] The linkage assembly 230 includes a first link 231 and a second link 232. One end of the first link 231 and one end of the second link 232 are hinged to a third member 223 at a distance from each other. The other end of the first link 231 and the other end of the second link 232 are hinged to a support frame 240 at a distance from each other. The linkage assembly 230 is designed with double links, which are hinged at a distance to the third member 223 and the support frame 240. This structure makes the swing of the support frame 240 more stable. The double links distribute the force on the support frame 240, reduce the burden on individual components, and improve durability.

[0045] The end of the piston rod 252 away from the cylinder 251 is hinged to the first connecting rod 231, so that the force of the gas spring 250 acts directly on the connecting rod assembly 230, thereby improving the transmission efficiency.

[0046] The support frame 240 includes a fifth member 241, an underarm support rod 242, and a hand support rod 243. The first connecting rod 231 and the second connecting rod 232 are both hinged to the fifth member 241. The underarm support rod 242 is fixedly connected to the fifth member 241, and the hand support rod 243 is fixedly connected to the underarm support rod 242. The support frame 240 is divided into multiple parts, each responsible for a different support function. The fifth member 241 serves as the main body, connecting the connecting rod assembly 230 and the underarm support rod 242, which in turn connects to the hand support rod 243. The underarm support rod 242 and the hand support rod 243 provide more targeted support for different body parts. The underarm support can distribute the weight of the torso, suitable for users who require greater support, while the hand support rod 243 provides a gripping position for the user, increasing stability when standing up.

[0047] In this embodiment, a pull-wire switch 244 is provided on the hand support rod 243, and the pull-wire switch 244 is connected to the gas spring 250. The pull-wire switch 244 allows the user to control the movement of the gas spring 250 by pulling the switch, increasing the user's control over the gas spring 250 and enabling the user to actively adjust the position of the support frame 240 when needed, thereby improving the flexibility and autonomy of use.

[0048] An armpit support 245 is provided at the end of the underarm support bar 242 away from the fifth bar 241. The design of the armpit support 245 can provide users with more comfortable underarm support. The shape and material of the armpit support 245 can be optimized to distribute pressure and reduce discomfort during prolonged use; the armpit support 245 can also provide additional stability to prevent users from slipping or losing balance when sitting down or standing up.

[0049] The working process of the sitting-up assist mechanism 200 provided in this embodiment is as follows:

[0050] The sit-up assist mechanism 200 is installed on both sides of the toilet seat 100. When using the sit-up assist mechanism 200, the user rotates it to place the underarm support bar 242 under their armpits, pulls the cable switch 244, and then sits down. Under the action of body weight, the gas spring 250 is compressed. The gas spring 250 precisely controls the support force and extension stroke by adjusting the gas pressure in the sealed cylinder 251, and can be locked at any position. This causes the linkage assembly 230 to drive the underarm support bar 242 to descend in a translational manner. When sitting on the toilet seat 100, the user releases the cable switch 244, and the gas spring 250 locks back in place. Then, the sit-up assist mechanism 200 is rotated around the hinge seat 210 to the side to avoid obstructing the user's view, and then the user can use the toilet.

[0051] When using the sit-up assist mechanism 200 to stand up, the user rotates the mechanism around the hinge seat 210 to their side, places the underarm support bar 242 under their armpits, and pulls the cable switch 244 with both hands. This unlocks the gas spring 250, releasing the energy stored in it and pushing the linkage assembly 230. The linkage assembly 230 then slowly raises the underarm support bar 242 in a translational manner, thus assisting the user in standing up. After reaching the extreme position, the user releases the cable switch 244, locking the gas spring 250 and fixing the position of the sit-up assist mechanism 200. The user then rotates the sit-up assist mechanism around the hinge seat 210 to the side.

[0052] Therefore, the sitting and standing assistance mechanism 200 provided in this application can assist users in sitting down and standing up when using the toilet. It has a simple structure, is easy to operate, and does not require modification of the original toilet 100.

[0053] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0054] Furthermore, the use of terms such as "first," "second," and "a" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

Claims

1. A sit-to-stand assist mechanism, characterized by, The application relates to a sitting-up assisting mechanism, which comprises the following parts: a hinged seat; a bottom frame, a connecting rod assembly and a supporting frame arranged in sequence from bottom to top, the bottom frame being hinged to the hinged seat, the first end of the connecting rod assembly being hinged to the bottom frame, and the second end of the connecting rod assembly being hinged to the supporting frame; an air spring, one end of the air spring being hinged to the bottom frame, and the other end of the air spring being hinged to the middle part of the connecting rod assembly, the middle part of the connecting rod assembly being located between the first end and the second end of the connecting rod assembly, the air spring driving the connecting rod assembly to swing so as to lift and lower the supporting frame.

2. The sit-to-stand assist mechanism of claim 1, wherein, The bottom frame comprises a first rod and a second rod, one end of the first rod being hinged to the hinged seat, the other end of the first rod being connected to one end of the second rod, the other end of the second rod being connected to the connecting rod assembly, and one end of the air spring being hinged to the first rod.

3. A sit-to-stand assist mechanism according to claim 2, wherein, The air spring comprises a cylinder and a piston rod, the cylinder being hinged to the first rod, one end of the piston rod being arranged in the cylinder and being axially movable along the cylinder, and the other end of the piston rod being hinged to the connecting rod assembly.

4. The sit-to-stand assist mechanism of claim 3, wherein, The bottom frame further comprises a third rod and a fourth rod, the first rod, the second rod, the third rod and the fourth rod being sequentially connected to form a quadrilateral structure. The connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod being hinged to the third rod in a spaced manner, and the other end of the first connecting rod and the other end of the second connecting rod being hinged to the supporting frame in a spaced manner. The other end of the piston rod, which is away from the cylinder, is hinged to the first connecting rod.

5. A sit-to-stand assist mechanism according to claim 4, wherein, The supporting frame comprises a fifth rod, an underarm supporting rod and a hand supporting rod, the first connecting rod and the second connecting rod being hinged to the fifth rod, the underarm supporting rod being fixedly connected to the fifth rod, and the hand supporting rod being fixedly connected to the underarm supporting rod.

6. The sit-to-stand assist mechanism of claim 5, wherein, A pull wire switch is arranged on the hand supporting rod, and the pull wire switch is connected to the air spring.

7. The sit-to-stand assist mechanism of claim 5, wherein, An underarm supporting rod is arranged on the other end of the underarm supporting rod, which is away from the fifth rod.

8. The sit-to-stand assist mechanism of claim 2, wherein, A universal wheel is connected to the other end of the first rod, which is away from the hinged seat.

9. A toilet device characterized by comprising: The application further relates to a toilet bowl and a sitting-up assisting mechanism, the sitting-up assisting mechanism being arranged on one side of the toilet bowl, and the hinged seat being fixed to a wall surface or a ground surface.

10. The toilet device according to claim 9, characterized by The sitting-up assisting mechanism is arranged on two sides of the toilet bowl, and the bottom frames of the two sitting-up assisting mechanisms are capable of approaching or moving away from each other.