TW202406520A - Back-pressure auxiliary stand-up chair - Google Patents

Abstract

The invention provides a back-pressure auxiliary rising chair, which includes a seat, a control support component and a lifting component. The control support component is located on both sides of the seat, and the lifting component is located between the control support components and at the bottom of the seat. The first and second linkage frames of the lifting assembly are in a cross-pivot state with the pivot point adjacent to the front end. The rear end of the first linkage frame is against the seat, and the front end of the second linkage frame and the seat are fixed to each other. When force is applied from the rear end of the force-applying armrest of the control support component, the force-applying armrest links a pivot rod to pivot and drive the rear legs to move forward. At this time, the rear legs drive the second linkage frame. Its rear end moves downward and its front end tilts upward. At the same time, the second linkage frame links the first linkage frame, so that the first linkage frame uses a pivot point to form a state in which the rear end tilts upward, and the first linkage frame The two bearings at the rear end of the body slide along the seat so that the seat is raised with the back side high and the front side low, thereby forming an upward and forward thrust with an asymmetrical lever structure, assisting the movement of the center of gravity and feet when the human body stands up. The fulcrum changes, effectively assisting the user to stand up and stand with less effort and safety.

Description

Back-pressure auxiliary stand-up chair

The present invention is related to the field of assistive devices, and is particularly a pressure-assisted stand-up method that utilizes an asymmetric lever structure to apply force from behind to provide upward and forward thrust of the seat to comply with changes in the center of gravity and footing of the human body when standing up. chair.

Our country has now entered an aging society, and it is estimated that it will enter a super-aged society in 2025, and the proportion of the elderly population will become higher and higher. As people get older, their physical disabilities become more severe, and they rely more on assistive devices in daily life. Therefore, under the current social situation in our country, the market for assistive device products is also expanding. The most commonly used product in the lives of the elderly is a seat that is conducive to resting. The most common accidents among the elderly are falls, mainly due to muscle weakness. Combining the above two points, it can be seen that getting up and leaving the chair is harmful to the elderly. In other words, it is a relatively dangerous and inconvenient action, and it is also a common cause of falling accidents. Therefore, how to solve the problem of the elderly getting up will be an urgent problem that needs to be overcome and solved.

Aging in the elderly can be divided into three aspects, including physiological, psychological and social aging. Physiological aging is related to the degeneration of cells, organic tissues, nervous systems, sensory systems, muscles and muscle strength, and the degeneration of muscles and muscle strength. On the other hand, as the muscles age with age, the number of muscle fibers will decrease, and the volume will also become smaller. Among them, the back and thigh muscles are the most significant, which will evolve into symptoms of sarcopenia. Since the human lower limbs are in a state of resistance to weight for a long time, the muscles of the lower limbs will degenerate faster than those of the upper limbs. The muscles of the lower limbs are muscle groups that are used quite frequently in daily life. Sitting, standing, walking, etc. all require the supply of muscles of the lower limbs. Support and power are carried out, so the degeneration of lower limb muscles will make it more strenuous for the elderly to perform many actions.

In view of this, many assistive devices related to the mobility of the elderly have emerged. Through these assistive devices, accidents can be reduced, the waste of caregiving manpower can be reduced, and the mobility of the elderly can be increased, etc. Common stand-up assistive devices can be roughly divided into electric drive types and non-electric drive types. By raising the seating surface of the seat, the purpose of assisting the elderly to stand up is achieved. However, the existing mechanism designs all use the front edge of the chair as the axis to rotate forward to lift the chair surface. This method is like dumping something, so that when standing up, the body's center of gravity should move upward and forward instead of moving forward in an instant. As a result, elderly people may easily lean forward and slip. This is especially dangerous for users with insufficient muscle strength in their lower limbs. In addition to the danger caused by the insufficient lifting mechanism, existing related products also have problems such as large size, large number of parts, and complicated combination methods. Under such a mechanism design, in addition to causing inconvenience and high costs in production, it is also easy to A problem occurred during assembly.

Therefore, based on visits to elderly people and actual understanding of their daily life conditions, the team of the invention conceived and proposed a back-pressure auxiliary stand-up chair based on the center of gravity and movement changes of the human body's rising movements, combined with the ergonomic design of the seat. We hope to effectively solve the above product deficiencies and provide assistive devices for the elderly that are safer, easier to use and easier to produce.

One object of the present invention is to provide a back-pressure auxiliary stand-up chair, which uses an asymmetrical lever structure with a cross-pivot, and is matched with the armrest to form a downward pressure from the rear to tilt the seat forward and lift upward at the same time. It leads the user to change the center of gravity into a state that is conducive to standing up, effectively avoiding the dangerous situation of the user falling forward, and can achieve self-service and semi-self-service functions in use, and is also very convenient. At the same time, the structure is simple and The stable characteristics also have certain advantages in production and assembly.

In order to achieve the above object, the present invention proposes a back-pressure auxiliary rising chair, which includes: a seat with a backrest, a connecting part and a sitting part. One end of the connecting part is connected to the sitting part, and the other end is connected to the sitting part. It is connected to the backrest and is located between the seating part and the backrest, and the connection part is in a concave arc shape; a pair of control support assemblies are respectively provided on both sides of the seat, and each control support component The component includes a force-applying armrest, a pivot rod, a front leg and a rear leg. The force-applying armrest has a fixed section and a movable section that are pivotally connected to each other. The front end of the fixed section is connected to the The front leg is connected, and the rear end is pivotally connected to the movable section; one end of the pivot rod is connected to the movable section, and the other end is pivotally connected to the rear leg; one end of the front leg and the rear leg The system is provided for contacting the ground, and the rear leg is tilted and extends beyond the rear of the seat; and a lifting component is provided between the pair of control support components and located on the bottom side of the seat. The lifting component includes: a The first linkage frame has an opening at the front end to form a U-shape. There is a through hole on both sides of the first linkage frame. The rear end of the first linkage frame has two bearings. The two bearings are The bearing system is arranged oppositely and leans against the connecting part; a second linkage frame has an opening at the front end, and the second linkage frame is a U-shaped rear end with two symmetrically arranged extension sections. Frame-like structure, the two ends of the second linkage frame pass through the through holes and are cross-pivoted with the first linkage frame to form two pivot points, wherein each pivot point is adjacent to the first linkage frame The body and the front end of the second linkage frame are arranged, and the two extension sections of the rear end of the second linkage frame are respectively connected to the rear legs, and the front end of the second linkage frame is assembled on the seat. The bottom surface of the seating part of the chair; and a leg reinforcing rod set, which is located at the opening of the first linkage frame. The leg reinforcing rod set has one front reinforcing rod and two rear reinforcing rods, The front reinforcing rod has a left section, a central section and a right section, the first linkage frame is connected to the central section, and the left section and the right section are connected to the central section respectively. The opposite ends of the section, and the end of the left section is connected to any one of the front legs, and the end of the right section is connected to the other front leg; the two rear reinforcing rods are arranged oppositely, and the two rear reinforcement bars One end of the reinforcing rod is connected to the front reinforcing rod, and the other end is connected to the rear leg; among them, after applying force from the movable section on the rear side of the force-applying handrail, the movable section is The pivot rods are linked to make the rear legs pivot and move forward relative to the pivot rods. At this time, the rear legs drive the second linkage frame, so that the second linkage frame moves forward. The front end moves downward and the front end tilts upward to lift the front side of the seat; at the same time, the second linkage frame links the first linkage frame so that the first linkage frame connects with the central section The fulcrum rotates to form a state in which the rear end is tilted upward, and the two bearings slide along the connecting portion toward the seat, so that the rear side of the seat is lifted upward and forward, and the seat is tilted upward. The rear side is high and the front side is low.

Preferably, the front reinforcing rod is an integrally formed structure, and the length of the central section is smaller than the distance between the pair of control support components. This simplifies the overall structure and at the same time improves the overall structural strength through the integrally formed structure.

Based on the same concept, the present invention also proposes a back-pressure auxiliary rising chair, which includes: a seat with a backrest, a connecting part and a sitting part, one end of the connecting part is connected to the sitting part, and the other One end is connected to the backrest, and is located between the seating part and the backrest, and the connection part is in a concave arc shape; a pair of control support assemblies are provided on both sides of the seat, each controlling the The support component includes a force-applying armrest, at least one pivot rod, a front leg and a rear leg. The front end of the force-applying armrest is pivotally connected to the pivot rod, and one end of the front leg and the rear leg is connected to the pivot rod. The pivot rod is pivotally connected to each other, the other end is provided for contacting the ground, and the rear leg is tilted and extends beyond the back of the seat; and a lifting component is provided between the pair of control support components and is located On the bottom side of the seat, the lifting assembly includes: a first linkage frame, which is mouth-shaped. The rear end of the first linkage frame has two bearings. The two bearings are arranged oppositely and lean against the connecting part; a second linkage frame. The second linkage frame is a frame-like structure with two symmetrically arranged extension sections at the mouth-shaped rear end. The second linkage frame and the first linkage frame system are cross-pivoted to form two pivot points. Each of the pivot fulcrums is disposed adjacent to the front ends of the first linkage frame and the second linkage frame, and the two extension sections of the rear end of the second linkage frame are respectively connected to the rear legs; The foot reinforcing rod group is connected to the front side of the first linkage frame. The foot reinforcing rod group has one front reinforcing rod and two rear reinforcing rods. The front reinforcing rod has a left section, A central section and a right section, the central section is connected to the first linkage frame, the left section and the right section are respectively connected to the opposite ends of the central section, and the left section The end of the section is connected to any one of the front legs, the end of the right section is connected to the other front leg, the two rear reinforcing rods are arranged oppositely, and one end of the two rear reinforcing rods is connected to the front leg respectively. The reinforcing rod is connected, and the other end is connected to the rear leg; and a connecting piece is a mouth-shaped metal sheet body, one end of which is assembled on the bottom side of the riding part of the seat, and the other end is connected to the second linkage frame Set up so that the second linkage frame and the seat are assembled and fixed to each other; wherein, after the force is applied from the rear end of the force-applying armrests, the force-applying armrests are linked to the pivot rods, so that the force-applying armrests are The pivot rod pivots relative to the front legs and drives the rear legs to move forward. At this time, the rear legs drive the second linkage frame so that the rear end of the second linkage frame Move downward and tilt the front end upward to lift the front side of the seat; at the same time, the second linkage frame links the first linkage frame, so that the first linkage frame connects to the central section. The fulcrum rotates to form a state where the rear end is tilted upward, and the two bearings slide along the connecting portion toward the seat, so that the rear side of the seat is lifted upward and forward, and the seat is tilted backward. The side is high and the front side is low.

Preferably, a front frame rod of the first linkage frame has an accommodating part, the front reinforcing rod is an integrally formed structure, and the central section of the front reinforcing rod is assembled in the accommodating part, and the central Both ends of the section have a bent portion respectively. The bent portions protrude from the accommodating portion to be connected to the left section and the right section. The two rear reinforcing rods are respectively connected to the bent sections. folds to enhance the overall structural strength.

Preferably, the second linkage frame includes a main body and a support rod. The main body is mouth-shaped and one of its rear frame rods is hollow. The support rod is inserted into the rear frame rod and has both ends protruding. The extension sections are formed from the rear frame rod to be connected with the rear legs, thereby improving the overall stability of the rear-pressure auxiliary stand-up chair.

Preferably, the pivot rods respectively have a first section and a second section arranged successively. One end of the first section is pivotally connected to the front end of the force-applying handrail, and the other end is connected to the second section. One end of the sections is connected, and the front leg is pivotally connected to the connection point of the first section and the second section, and the end of the second section opposite to the first section is connected to the rear leg. The foot pivot joint, wherein the first section and the second section are both arc-shaped, and the first section is an upward convex arc-shaped, the second section is a concave arc-shaped, and the length of the first section It is smaller than the second section, so that the mechanism linkage after pressing down on the force-applying handrails can be smoother.

Preferably, the support rod is a cylinder with a diameter of 1 to 3 cm and a length of 60 to 80 cm to provide better support performance.

Based on the above embodiments, preferably, the distance between the pivot points and the front end of the first linkage frame is L1, and the total length of the first linkage frame is L2, where L1:L2 is 1:3~1 : 3.5; the distance between the pivot points and the front end of the second linkage frame is L3, and the total length of the second linkage frame is L4, where L3:L4 is 1:3 to 1:3.5. By making the pivot Having the fulcrum at the above position can achieve a better linkage effect, and at the same time, it also allows the lifting of the seat to be closer to the center of gravity and fulcrum changes of the human body when standing up. Preferably, L1:L2 is 1:3, and L3:L4 is 1:4, so that the longer second linkage frame can prevent the rear legs from being too tilted.

Furthermore, the connecting part further has a protrusion, which is located corresponding to the hollow area of the first linkage frame. When the rear side of the seat is lifted by the first linkage frame, the protrusion can be The rear end of the first linkage frame is blocked, thereby preventing the seat from tilting too forward, thereby further improving safety.

To sum up, the back-pressing auxiliary rising chair of the present invention utilizes an asymmetrical lever structure with a center offset, so that the armrest can be slightly raised by pressing down from behind the seat through the first and second linkage frames. The front side of the seat and the rear side of the seat are greatly lifted forward and upward. This can conform to the changing state of the center of gravity and fulcrum when the human body stands up. In addition to preventing the dangerous situation of the user standing up and leaning forward directly, it can also allow the user to stand up and lean forward directly. This makes it easier for the user to get up. In use, in addition to allowing others to help push down the force armrest from behind, the structural design of the invention also enables the rider to reach out and push down the force armrest on his own, achieving the purpose of getting up by himself. It is also quite safe and labor-saving in this way of use. Furthermore, the present invention also provides relevant examples regarding detailed technical features that can be added to improve performance in various aspects, as described in the above paragraphs.

In order to enable those with ordinary knowledge in the art to clearly understand the contents of the present invention, the following description is accompanied by the drawings, for which please refer. Each of the drawings is used to illustrate the technical features of the present invention. The dimensions such as length, width, height, and proportions of structural components are only for illustrative purposes. They do not represent the actual structure, nor can they be used to limit the present invention. Description.

Please refer to Figures 1 to 4, which are partially exploded schematic diagrams, assembly schematic diagrams and application schematic diagrams (1) and (2) of the first embodiment of the invention. The present invention discloses a back-pressure auxiliary rising chair 1, which allows the rider 2 to press down from the rear of the chair and lift the seat upward and forward at the same time, by himself or with the assistance of others, to assist the human body in getting up from a sitting position. Shift in focus. The back-pressure auxiliary rising chair 1 includes a seat 10 , a pair of control support components 11 and a lifting component 12 .

The seat 10 has a backrest part 101, a connection part 102 and a seating part 103. One end of the connection part 102 is connected to the seating part 103, and the other end is connected to the backrest part 101, and is located on the seating part. between the connecting portion 103 and the backrest portion 101, and the connecting portion 102 is in a concave arc shape. The seat 10 is generally L-shaped, and has a concave arc-shaped connecting portion 102 as a connecting structure between the backrest portion 101 and the seating portion 103. This can provide the rider 2 with a more comfortable riding experience. This can also make the lifting of the seat 10 smoother and more stable.

The pair of control support components 11 are arranged on both sides of the seat 10. Each of the control support components 11 includes a force-applying armrest 111, a pivot rod 112, a front leg 113 and a rear leg 114. The armrest 111 has a fixed section 1112 and a movable section 1111 that are pivotally connected to each other. The front end of the fixed section 1112 is connected to the front leg 113, and the rear end is pivotally connected to the movable section 1111; the pivotal connection One end of the rod 112 is connected to the movable section 1111, and the other end is pivotally connected to the rear leg 114; one end of the front leg 113 and the rear leg 114 is for contacting the ground, and the rear leg 114 is Tilt setting and beyond the seat 10 rear. Among them, in view of the diverse body shapes of the passengers 2, the height of the pair of control support components 11 can be changed accordingly. For example, it can be set lower and closer to the seating part 101 of the seat 10, or it can be set higher. It can correspond to the center position of the backrest 101 and so on, so as to facilitate the use of riders of various sizes.

The lifting component 12 is disposed between the pair of control support components 11 and is located on the bottom side of the seat 10. The lifting component 12 includes a first linkage frame 121, a second linkage frame 122 and a leg reinforcing rod. Group 123. The front end of the first linkage frame 121 has an opening to form a U-shape. The rear end of the first linkage frame 121 has two bearings 1211 . The two bearings 1211 are arranged oppositely and abut against the connecting portion 102 . The first linkage frame 121 may be integrally formed or may be a U-shaped structure formed by a plurality of rods fixedly combined with each other. The front end of the second linkage frame 122 has an opening to form a U-shape, and the second linkage frame 122 has a U-shaped frame structure with two symmetrically arranged extension sections 1229 at the rear end. A through hole 1221 is provided on both sides. The two ends of the first linkage frame 121 pass through the through holes 1221 and are cross-pivoted with the second linkage frame 122 to form two pivot points 124, each of which has a through hole 1221. The pivot point 124 is disposed adjacent to the front ends of the first linkage frame 121 and the second linkage frame 122, and the two extension sections 1229 at the rear end of the second linkage frame 122 are respectively connected to the rear legs 114. , the front end of the second linkage frame 122 is assembled on the bottom surface of the seating part 103 of the seat 10 . The second linkage frame 122 may be integrally formed or may be a structure formed by a plurality of rods fixedly combined with each other. The foot reinforcing rod group 123 is located at the opening of the first linkage frame 121. The foot reinforcing rod group 123 has a front reinforcing rod 1231 and two rear reinforcing rods 1232. The front reinforcing rod 1231 has a left section. 12311. A central section 12312 and a right section 12313. The first linkage frame 121 is connected to the central section 12312. The left section 12311 and the right section 12313 are respectively connected to the central section 12312. The two opposite ends, and the end of the left section 12311 is connected to any one of the front legs 113, and the end of the right section 12313 is connected to the other front leg 113; the two rear reinforcing rods 1232 are arranged oppositely, One end of the two rear reinforcing rods 1232 is connected to the front reinforcing rod 1231 respectively, and the other end is connected to the rear leg 114 .

During operation, when force is applied from the movable section 1111 on the rear side of the force-applying armrest 111 to press down, the movable sections 1111 link the pivot rods 112 so that the rear legs 114 face each other. The pivot rods 112 pivot and move forward. At this time, the rear legs 114 drive the second linkage frame 122, causing the rear end of the second linkage frame 122 to move downward and the front end to tilt upward. Lift the front side of the seat 10; at the same time, the second linkage frame 122 links the first linkage frame 121, so that the first linkage frame 121 rotates with the connection point with the central section 12312 as the fulcrum to form The rear end is tilted upward, and the two bearings 1211 slide along the connecting portion 102 toward the seating portion 103 so that the rear side of the seat 10 is lifted upward and forward, and the seat 10 is tilted upward. The rear side is high and the front side is low. In this way, when the passenger 2 wants to get up, he can stretch his hand back and directly press down the movable sections 1111 of the force-applying armrests 111, so that the seat 10 can be lifted up through the lifting component 12. In addition to the rear side of the seating part 103 being raised forward and upward, the front side of the seating part 103 will also be in a rising state. This can effectively prevent the rider from 2 When standing up, only the hips are raised, causing the center of gravity to momentarily move forward beyond the ankles, causing the person to fall forward. The advantage of designing the connecting part 102 into a concave arc shape can be seen during the above-mentioned movement process, because the two bearings 1211 will slide along the connecting part 102 toward the seating part 103 to allow the seat 10 to move backward. The side is lifted forward and upward, so that the connecting portion 102 has a concave arc structure, which not only improves the comfort of the rider 2, but also makes the sliding of the two bearings 1211 smoother.

Getting up is a process of changing from a sitting position to a standing position. During the process, the feet are fixed on the ground. With the ankle joint as the fixed point, the upper body, especially the center of gravity of the chest, is tilted forward and moved to the ankle fulcrum to form a vertical line to achieve a balanced position. You can get up. When standing up, the greater the forward tilt of the trunk means that the center of gravity is lower and rearward, and it must be moved forward to reduce the torque on the lower limbs to facilitate standing up. At this time, more effort must be expended to complete. On the contrary, if the standing angle is The smaller it is, the higher the center of gravity is, and the execution will be more effortless. Therefore, it can be seen from the above that the center of gravity transfer is concentrated in the early stage of getting up and is the most laborious part of the process. In order to solve this problem and trouble, the present invention is designed so that the back-pressure auxiliary getting up chair 1 can achieve the goal of standing up. The center of gravity of the body is forward and upward, and it provides auxiliary needs for balance, support and force application. In addition, another problem with existing auxiliary stand-up products is that most of them only have the action of raising the buttocks, but do not have the action of synchronously raising the seating surface of the seat. Therefore, when the rider sits on it, the assistive device product is also driven. At this time, the seat will move as if it is about to tip the rider forward, which can easily cause the rider's body center of gravity to lean too far forward beyond the ankle position, and then fall forward. For this purpose, the team of the present invention used The pivot points 124 of the first linkage frame 121 and the second linkage frame 122 are not located at the center, so that the front side of the seat 10 is in a slightly lifted state, and the rear side is larger. The upward and forward lifting can achieve the effect of lifting the buttocks. This can solve the dangerous situation of the rider 2 easily falling forward and effectively assist the rider 2 to change the center of gravity and stand up using the feet as a fulcrum. Furthermore, the present invention is a back-pressure type operation, so that when the rider 2 uses the back-pressure auxiliary stand-up chair 1 by himself, he can use it by applying force backwards, effectively reducing the risk of forward leaning, and is also suitable for weak people. For the powerless rider 2, it is also more convenient for others to assist from the rear.

Preferably, the front reinforcing rod 1231 can be an integrally formed structure, and the length of the central section 12312 is smaller than the spacing between the pair of control support assemblies 11. This can make the structure of the front reinforcing rod 1231 more complete and easy to use. Improving the overall structural strength and limiting the length of the central section 12312 to less than the distance between the pair of control support components 11 not only ensures that the foot reinforcing rod group 12 can withstand the force, but also allows the back-pressure auxiliary rising chair 1 The overall structure is simpler and safer and more stable in use.

In order to enable the second linkage frame 122 to smoothly drive the first linkage frame 121 in response to the forward tilting displacement of the rear legs 114, so that the rear side of the seat 10 can be greatly raised, the first linkage frame can be The front end of the body 121 is flush with the front end of the second linkage frame 122, and the distance between the pivot points 124 and the front end of the first linkage frame 121 is L1. The total length of the first linkage frame 121 The degree is L2, where L1:L2 is 1:3 to 1:3.5; the distance between the pivot points 124 and the front end of the second linkage frame 122 is L3, and the total length of the second linkage frame 122 is L4. , where L3:L4 is 1:3~1:4.5. Through the above-mentioned position restriction conditions of the pivot point 124, the first linkage frame 121 and the second linkage frame 122 can be in a better linkage state, and the front side of the seat 10 can be slightly raised. The rear side is in a state of greater forward and upward lift. Preferably, L1:L2 can be 1:3, and L3:L4 can be 1:4. In this way, when the length of the second linkage frame 122 is greater than the length of the first linkage frame 121, the design can Relatively, the rear legs 114 are prevented from tilting too far backward to affect the lifting height of the seat 10 .

When used, as shown in Figures 3 and 4, the rider 2 sits on the seat 103 of the seat 10, his back can be against the backrest 101, and his knees can be located in front of the seat 103. Therefore, when you need to get up, you need to apply force to press down the movable section 1111. This action can be done by yourself applying force backwards with your hands or by someone else applying force from the back-pressure auxiliary rising chair 1. When the movable sections 1111 are pressed down, they are linked to the pivot rods 112, so that the rear legs 114 are driven by the pivot rods 112 to tilt and rotate forward with the ground as the fulcrum. At this time, the When the rear legs 114 drive the second linkage frame 122 , the rear end of the second linkage frame 122 moves downward, and the front end of the second linkage frame 122 is tilted upward. At this time, the front side of the seat 10 is the seating part. The front position of 103 will be slightly lifted upward as the second linkage frame 122 moves. At the same time, in response to the pivot points 124, the first linkage frame 121 also moves synchronously, and uses the joint between the first linkage frame 121 and the central section 12312 as a fulcrum to rotate to form a rear end tilted upward. state, the two bearings 1211 slide along the connecting portion 102 toward the seating portion 103 so that the rear side of the seat 10 is lifted upward and forward, so that the seat 10 is lifted with the rear side high and the front side low. condition. At this time, the passenger 2 can effectively shift the center of gravity of the body through the raised state of the seat 10, and complete the standing action using the ankle joint as the fulcrum. It is reiterated here that in such a raised state of the seat, the dangerous situation of the passenger 2 being instantly shifted and falling forward beyond the ankle joint due to the lifting of only the buttocks can be effectively avoided, and the seat can be allowed to move forward. The chair 10 achieves this better assisted standing and lifting state by relying on the structural design of the lifting component 12 and the control support component 11 , especially the first linkage frame 121 and the second linkage frame in the lifting component 12 The structural feature is that the pivot point 124 of the body 122 is biased forward.

Please continue to refer to Figures 5 to 8, which are partially exploded schematic diagrams, assembly schematic diagrams and application schematic diagrams (1) and (2) of the second embodiment of the present invention. Based on the same concept, this embodiment also proposes a back-pressure auxiliary rising chair 1 , which also includes a seat 10 , a pair of control support components 11 and a lifting component 12 .

The seat 10 also has a backrest part 101, a connecting part 102 and a sitting part 103. One end of the connecting part 102 is connected to the sitting part 103, and the other end is connected to the backrest part 101, and is located on the Between the seating part 103 and the backrest part 101, the connecting part 102 is in a concave arc shape.

The pair of control support components 11 are arranged on both sides of the seat 10. Each of the control support components 11 includes a force-applying armrest 111, at least one pivot rod 112, a front leg 113 and a rear leg 114. The front end of the armrest 111 is pivotally connected to the pivot rod 112, the front leg 113 and the rear leg 114 are pivotally connected to the pivot rod 112, and the other end is for contacting the ground, and the rear leg System 114 is tilted and extends beyond the rear of the seat 10 . Among them, preferably, each control support component 11 is provided with two pivot rods 112, and the two pivot rods 112 are symmetrically arranged inside and outside the force applying armrest 111 to respond to the force application synchronously. The armrest 111 moves. And similarly, the height of the pair of control support components 11 can be changed according to the body shape of the user group of the back-pressure auxiliary rise chair 1. For example, the sitting portion 103 can be set lower and closer to the seat 10, or The higher setting can correspond to the center position of the backrest 102 and so on, so as to facilitate the use of riders of various body types.

The lifting component 12 is disposed between the pair of control support components 11 and is located on the bottom side of the seat 10. The lifting component 12 includes a first linkage frame 121, a second linkage frame 122, and a leg reinforcing rod. Group 123 and a connecting piece 125. The first linkage frame 121 and the second linkage frame 122 are each mouth-shaped. There are two bearings 1211 at the rear end of the first linkage frame 121. The two bearings 1211 are arranged oppositely and abut against the connecting portion 102. The second linkage frame 122 is a frame-like structure with two symmetrically arranged extension sections 1229 at the rear end of the mouth. The second linkage frame 122 and the first linkage frame 121 are cross-pivoted to form two pivot points. 124, wherein each of the pivot points 124 is disposed adjacent to the front ends of the first linkage frame 121 and the second linkage frame 122, and the two extension sections 1229 at the rear end of the second linkage frame 122 are respectively connected with the rear end. Leg 114 connection set. The leg reinforcing rod group 123 is connected to the front side of the first linkage frame 121. The leg reinforcing rod group 123 has a front reinforcing rod 1231 and two rear reinforcing rods 1232. The front reinforcing rod 1231 has a left section. 12311. A central section 12312 and a right section 12313. The central section 12312 is connected to the first linkage frame 121. The left section 12311 and the right section 12313 are respectively connected to the central section. The opposite ends of 12312, and the end of the left section 12311 is connected to any one of the front legs 113, the end of the right section 12313 is connected to the other front leg 113, and the two rear reinforcing rods 1232 are arranged oppositely. , and one end of the two rear reinforcing rods 1232 is connected to the front reinforcing rod 1231 respectively, and the other end is connected to the rear leg 114. The connecting piece 125 is a mouth-shaped metal piece, one end of which is assembled on the bottom side of the seating part 103 of the seat 10, and the other end is connected to the second linking frame 122, so that the second linking frame 122 The seats 10 are assembled and fixed with each other. In order to ensure that the second linkage frame 122 and the seat 10 can be stably assembled with each other, the connecting piece 125 is made of metal to reduce the probability of deformation and has a certain structural strength, and the connecting piece 125 can be locked, for example. The seating portion 103 of the seat 10 is assembled and fixed to each other, which can expand the material selection of the seat 10 . Even if the entire seat 10 is made of non-metallic materials, it can be smoothly and stably assembled with the connecting piece 125 . The connecting piece 125 and the second linking frame 122 can also be assembled with each other in the above manner.

During operation, when force is applied from the rear end of the force-applying armrests 111 to press down, the force-applying armrests 111 are linked to the pivoting rods 112 so that the pivoting rods 112 pivot relative to the front legs 113 , and drive the rear legs 114 to move forward. At this time, the rear legs 114 drive the second linkage frame 122, causing the rear end of the second linkage frame 122 to move downward and the front end to tilt upward. Lift the front side of the seat 10; at the same time, the second linkage frame 122 links the first linkage frame 121, so that the first linkage frame 121 rotates with the connection point with the central section 12312 as the fulcrum. The rear end is tilted upward, and the two bearings 1211 slide along the connecting portion 102 toward the seating portion 103 so that the rear side of the seat 10 is lifted upward and forward, and the seat 10 is lifted upward and forward. 10 It is in a raised state with the back side being high and the front side being low. Through the above structural features, when the rear end of the force-applying armrest 111 is pressed down and displaced downward, the lifting component 12 is used to form a raised state in which the front side is lower and the rear side is higher. This can avoid Only the rear side of the seat 10 is lifted upwards, causing the rider 2 to easily fall forward, and the rear-pressure operation system is more conducive to the assistance of others. For other detailed technical features and corresponding functions that are the same as those of the first embodiment, please refer to the preceding paragraphs and will not be repeated here.

In specific implementation, the front frame rod 1212 of the first linkage frame 121 can have a receiving portion 1213, the front reinforcing rod 1231 is an integrally formed structure, and the central section 12312 of the front reinforcing rod 1231 is assembled. In the accommodating part 1213, the two ends of the central section 12312 are respectively provided with a bending part 12314. The bending parts 12314 protrude from the accommodating part 1213 to connect with the left section 12311 and the right section. 12313 are connected and arranged, and the two rear reinforcing rods 1232 are respectively connected to the bending portion 12314. In order to further simplify and ensure the structural stability of the leg reinforcement rod groups 123 and the first linkage frame 121, in specific implementation, the front frame rod 1212 of the first linkage frame 121 can have the accommodation. part 1213, and the receiving part 1213 can be, for example, a C-shaped or U-shaped groove, or can be a hole penetrated in the center of the front frame rod 1212, so that the central section 12312 of the front reinforcing rod 1231 can be more It is easy to assemble with the first linkage frame 121 while maintaining excellent structural stability.

As for the second linkage frame 122, preferably, the second linkage frame 122 may include a main body 1222 and a support rod 1223. The main body 1222 is mouth-shaped and one of its rear frame rods 12221 is hollow. The support rod 1223 is passed through the rear frame rod 12211 and its two ends protrude from the rear frame rod 12211 to form extension sections 1229 for connection with the rear legs 114 . Through the above structural features, choosing to insert a complete rod body into the rear frame rod 12211 will make the assembly of the second linkage frame 122 and the rear legs 114 more stable, and the overall structural strength will also be stronger. promote. In a preferred embodiment, the support rod 1223 is a cylinder with a diameter of 1 to 3 cm and a length of 60 to 80 cm. For example, the support rod 1223 can have a diameter of 2 cm and a length of about 70 cm.

In addition, the pivot rods 112 respectively have a first section 1121 and a second section 1122 that are continuously arranged. One end of the first section 1121 is pivotally connected to the front end of the force-applying armrest 111, and the other end is connected to the front end of the force-applying armrest 111. One end of the second section 1122 is connected, and the front leg 113 is pivotally connected to the connection between the first section 1121 and the second section 1122. The second section 1122 is relatively connected to the first section. The end of the section 1121 is pivotally connected to the rear leg 114, wherein both the first section 1121 and the second section 1122 are arc-shaped, and the first section 1121 is an upward convex arc-shaped, and the second section 1121 is arc-shaped. The section 1122 is in a concave arc shape, and the length of the first section 1121 is smaller than that of the second section 1122 . In order to facilitate the force exerted on the force-applying armrest 111 to be transmitted through the pivot rods 112 to drive the first linkage frame 121 and the second linkage frame 122, the pivot rods 112 can be set to approximately S-shaped shape, and the front end, turning part and rear end of the S-shaped are respectively used as the pivot joints with the force-applying armrest 111, the front leg 113 and the rear leg 114, so that the downward force can be transmitted and The first linkage frame 121 and the second linkage frame 122 are driven to move in an appropriate state.

Similarly, in order for the second linkage frame 122 to smoothly drive the first linkage frame 121 in response to the forward tilting displacement of the rear leg 114, the front end of the first linkage frame 121 can also be connected to the second linkage frame 122. The front end of the linkage frame 122 is in a flush state, and the distance between the pivot points 124 and the front end of the first linkage frame 121 is L1. The total length of the first linkage frame 121 is L2, where L1: L2 is 1:3~1:3.5; the distance between the pivot points 124 and the front end of the second linkage frame 122 is L3, and the total length of the second linkage frame 122 is L4, where L3:L4 is 1: 3~1:4.5. Through the above-mentioned position restriction conditions of the pivot point 124, the first linkage frame 121 and the second linkage frame 122 can be in a better linkage state, and the front side of the seat 10 can be slightly raised. The rear side is in a state of greater forward and upward lift.

Furthermore, in this embodiment, it is disclosed that the connecting part 102 further has a protrusion 1021. The protrusion 1021 is located corresponding to the hollow area of the first linkage frame 121 and is supported by the first rear side of the seat 10. When the linkage frame 121 is lifted, the bump 1021 can block the rear end of the first linkage frame 121 . The bump 1021 can form a blocking and limiting effect. Although the lifting angle of the rear side of the seat 10 can be controlled only through the structural design of the lifting component 12 and the pair of control support components 11, the bump 1021 In addition to more reliably limiting the aforementioned lifting angle, the use safety of the rear-pressure auxiliary rising chair 1 can be further improved, making the seat 10 more stable in the raised state. Of course, in the first embodiment, the protrusion can also be provided on the bottom surface of the connecting portion 102 of the seat 10 so as to block the rear end of the first linkage frame 121.

Practically speaking, as shown in Figures 7 and 8, the rider 2 is seated on the seating part 03 of the seat 10, the buttocks can be pressed against the connecting part 102, and the back can be pressed against the backrest part 101. When wanting to get up, the rear ends of the force-applying armrests 111 are pressed down to link the lifting assembly 12 to lift the seat 10 forward and upward. The aforementioned pressing action can be performed by the rider 2 himself or It is assisted by others from behind. After the force-applying armrests 111 are pressed down due to force, they are linked to the pivot rods 112. The pivot rods 112 pivot relative to the front legs 113 and drive the rear legs 114, so that the The point where the rear leg 114 contacts the ground is used as a fulcrum to move forward. At this time, the rear legs 114 drive the second linkage frame 122 to move its rear end downward and its front end to tilt upward, and the front side of the seat 10 connected to the front end of the second linkage frame 122 follows. be lifted. At the same time, the second linkage frame 122 links the first linkage frame 121 so that the first linkage frame 121 uses the connection point with the central section 12312 of the front reinforcing rod 1231 as a fulcrum to rotate and move. The rear end of the linkage frame 121 is tilted, and the two bearings 1211 slide along the connecting portion 102 toward the seating portion 103 , causing the rear side of the seat 10 to be lifted upward and forward, and finally the seat 10 It presents a raised state with the back side being high and the front side being low. The rider 2 can smoothly change the center of gravity of the body in response to the lifting change of the seat 10, making it easier and safer to get up from a sitting position to a standing position. Likewise, this system can effectively avoid the dangerous situation of the rider 2 falling forward due to only raising his buttocks. For descriptions of other features and functions of the system, please refer to the previous paragraphs.

To sum up, the back-pressure auxiliary rising chair of the present invention utilizes a double-frame structure that crosses and pivots with the fulcrum in the front, and is matched with the control support component that applies force by pressing down from the rear, so that force can be applied easily, and The seat can be made into a raised state in which the rear side is lifted forward and upward, and the front side is also slightly raised. This can effectively solve the dangers and deficiencies of conventional auxiliary standing chair products. The team of this invention conducted on-site visits and investigations into the difficulties that seniors often encounter in their lives, and studied existing related assistive products. They found that existing assistive standing products, whether electric or non-electric, have hidden dangers. That is to say, most of their structures are designed with the front side of the chair as the pivot axis, resulting in a state where only the back of the chair is raised, which is like tilting the items placed on the chair forward. At this time, the rider is easily Only the hip area is raised, causing the center of gravity to instantly move forward and exceed the ankle position. In this situation, it will cause the rider to fall forward and fall forward. Therefore, in order to solve this problem and provide safer and better assistive products, the team of the present invention conceived and proposed the technical features described in the above embodiments, using an asymmetrical lever structure to achieve simultaneous lifting of the front side of the seat and the The action state of the rear side allows users who need assistance in getting up to get help more safely and conveniently. At the same time, in order to allow others to assist more easily, the invention is designed to apply force from the rear. The pressure structure allows others to observe the lifting of the seat and the change in the center of gravity of the rider's body from the rear, and adjust the speed of pressing down until the rider smoothly transitions to a standing position. Regarding the detailed technical features that can be added to the back-pressure auxiliary stand-up chair, the present invention also proposes, for example, the detailed structure of the first linkage frame and the second linkage frame, or the arrangement of the pivot fulcrum. Conditions, etc., in order to further enhance the functions of the back-pressure auxiliary rising chair in all aspects. Finally, with the improvement of social medical standards, the average life span of Taiwan's population has gradually increased. The team of the present invention hopes to provide safe and easy-to-use standing assistive products for the elderly, so that the elderly can improve their quality of life and caregivers can also use them. This helps us to do our best in an aging society.

The above is only an illustration of the preferred embodiments within the patentable scope of the present invention, and is not intended to limit the scope of rights of the present invention based on the content of these embodiments; therefore, any changes in the meaning of the present invention may be made without departing from the equal scope of the present invention. or modifications should still be covered by the patentable scope of the present invention.

1: Back-pressure auxiliary stand-up chair 10: Seat 101: Backrest 102:Connection part 1021: Bump 103:Ride Department 11:Control support components 111: Force armrest 1111: Movable section 1112: Fixed section 112: Pivot rod 1121: First section 1122:Second section 113:Front feet 114:Rear legs 12: Lift components 121: First linked frame 1212:Bearing 1213:Front frame rod 1214: Accommodation Department 122: Second linked frame 1221:Perforation 1222:Subject 12221:Rear frame rod 1223:Support rod 1229:Extended section 123: Leg reinforcement rod set 1231: Front reinforcing rod 12311:Left section 12312:Central section 12313:Right section 12314: Bending part 124: Pivot fulcrum 125: Connecting piece 2: Rider

Figure 1 is a partially exploded schematic view of the push-type auxiliary rising chair according to the first embodiment of the present invention. Figure 2 is a schematic assembly diagram of the rear push-type auxiliary rising chair according to the first embodiment of the present invention. Figure 3 is a schematic diagram (1) of the application of the push-type auxiliary rising chair according to the first embodiment of the present invention. Figure 4 is a schematic diagram (2) of the application of the push-type auxiliary rising chair according to the first embodiment of the present invention. Figure 5 is a partially exploded schematic view of the push-type auxiliary rising chair according to the second embodiment of the present invention. Figure 6 is a schematic assembly diagram of the rear push-type auxiliary rising chair according to the second embodiment of the present invention. Figure 7 is a schematic diagram (1) of the application of the push-type auxiliary rising chair according to the second embodiment of the present invention. Figure 8 is a schematic diagram (2) of the application of the push-type auxiliary rising chair according to the second embodiment of the present invention.

1: Back-pressure auxiliary stand-up chair

10: Seat

101: Backrest

102:Connection part

103:Ride Department

11:Control support components

111: Force armrest

1111: Movable section

1112: Fixed section

112: Pivot rod

113:Front feet

114:Rear legs

121: First linked frame

1211:Bearing

122: Second linked frame

1221:Perforation

1229:Extended section

123: Leg reinforcement rod set

1231: Front reinforcing rod

12311:Left section

12312:Central section

12313:Right section

124: Pivot fulcrum

Claims (10)

A back-pressure auxiliary rising chair, including: A seat has a backrest, a connecting part and a seating part. One end of the connecting part is connected to the seating part, and the other end is connected to the backrest, and is located between the seating part and the backrest. between, and the connecting portion is concave arc-shaped; A pair of control support components are provided on both sides of the seat. Each control support component includes a force armrest, a pivot rod, a front leg and a rear leg. The force armrests are pivoted to each other. A fixed section and a movable section, the front end of the fixed section is connected to the front leg, and the rear end is pivotally connected to the movable section; one end of the pivot rod is connected to the movable section, and the other end is connected to the movable section. One end is pivotally connected to the rear leg; one end of the front leg and the rear leg is for contacting the ground, and the rear leg is tilted and extends beyond the rear of the seat; and A lifting component is provided between the pair of control support components and located on the bottom side of the seat. The lifting component includes: A first linkage frame, the front end of the first linkage frame has an opening to form a U-shape, the rear end of the first linkage frame has two bearings, the two bearings are arranged oppositely and lean against the connecting part; A second linkage frame, the front end of the second linkage frame has an opening, and the second linkage frame is a U-shaped frame structure with two symmetrically arranged extension sections at the rear end. The side system is provided with a through hole, and both ends of the first linkage frame pass through the hole and are cross-pivoted with the second linkage frame to form two pivot fulcrums, wherein each pivot fulcrum is adjacent to the third linkage frame. A linkage frame is provided with the front end of the second linkage frame, and the two extension sections of the rear end of the second linkage frame are respectively connected to the rear legs. The front end of the second linkage frame is assembled on the underside of the seat of the seat; and A foot reinforcing rod set, the leg reinforcing rod set is located at the opening of the first linkage frame, the leg reinforcing rod set has a front reinforcing rod and two rear reinforcing rods, the front reinforcing rod has a left area section, a central section and a right section, the first linkage frame is connected to the central section, the left section and the right section are respectively connected to the opposite ends of the central section, and the The end of the left section is connected to any one of the front legs, and the end of the right section is connected to the other front leg; the two rear reinforcing rods are arranged oppositely, and one end of the two rear reinforcing rods is connected to the other front leg respectively. The front reinforcing rod is connected, and the other end is connected to the rear leg; Among them, after the force is applied from the movable section on the rear side of the force-applying armrest, the movable section is linked to the pivot rods, so that the rear legs pivot relative to the pivot rods. Move forward, and at this time, the rear legs drive the second linkage frame, causing the rear end of the second linkage frame to move downward and the front end to tilt upward, thereby lifting the front side of the seat; at the same time, the third linkage frame moves forward The two linkage frames link the first linkage frame, so that the first linkage frame rotates with the connection point with the central section as the fulcrum to form a state where the rear end is tilted upward, and the two bearings are along the connecting portion. Sliding in the direction of the seating part causes the rear side of the seat to be lifted upward and forward, and the seat is in a lifted state with the rear side being high and the front side being low. As claimed in claim 1, the rear push-type auxiliary rising chair is characterized in that the front reinforcing rod is an integrally formed structure, and the length of the central section is smaller than the distance between the pair of control support components. A back-pressure auxiliary rising chair, including: A seat has a backrest, a connecting part and a seating part. One end of the connecting part is connected to the seating part, and the other end is connected to the backrest, and is located between the seating part and the backrest. between, and the connecting portion is concave arc-shaped; A pair of control support components are provided on both sides of the seat. Each control support component includes a force-applying armrest, at least one pivot rod, a front foot and a rear foot. The front end of the force-applying armrest is connected to The pivot rod is pivoted, one end of the front leg and the rear leg is pivoted to the pivot rod, the other end is for contacting the ground, and the rear leg is tilted and exceeds the seat rear; and A lifting component is provided between the pair of control support components and located on the bottom side of the seat. The lifting component includes: A first linkage frame is mouth-shaped, and the rear end of the first linkage frame has two bearings, the two bearings are arranged oppositely and lean against the connecting part; A second linkage frame. The second linkage frame is a frame-like structure with two symmetrically arranged extension sections at the mouth-shaped rear end. The second linkage frame and the first linkage frame system are cross-pivoted to form two pivots. The pivot points are arranged adjacent to the front ends of the first linkage frame and the second linkage frame, and the two extension sections of the rear end of the second linkage frame are respectively connected to the rear legs. ; A foot reinforcing rod group, the foot reinforcing rod group is connected to the front side of the first linkage frame, the foot reinforcing rod group has a front reinforcing rod and two rear reinforcing rods, the front reinforcing rod has a left area section, a central section and a right section, the central section is connected to the first linkage frame, the left section and the right section are respectively connected to the opposite ends of the central section, and The end of the left section is connected to any one of the front legs, the end of the right section is connected to the other front leg, the two rear reinforcing rods are arranged oppositely, and one end of the two rear reinforcing rods is connected to each other respectively. The front reinforcing rod is connected, and the other end is connected to the rear leg; and A connecting piece is a mouth-shaped metal sheet, one end of which is assembled on the bottom side of the seating part of the seat, and the other end is connected to the second linkage frame, so that the second linkage frame is connected to the seat. Assemble and fix each other; Among them, after force is applied from the rear end of the force-applying armrests, the force-applying armrests link the pivot rods, causing the pivot rods to pivot relative to the front legs and drive the rear legs. The feet move it forward, and at this time, the rear legs drive the second linkage frame, causing the rear end of the second linkage frame to move downward and the front end to tilt upward, thereby lifting the front side of the seat; At the same time, the second linkage frame links the first linkage frame, causing the first linkage frame to rotate with the connection point with the central section as the fulcrum to form a state where the rear end is tilted upward, and the two bearings are along the The connecting part slides toward the seating part so that the rear side of the seat is lifted upward and forward, and the seat is in a lifted state with the rear side being high and the front side being low. As claimed in claim 3, the rear push-type auxiliary rising chair, wherein a front frame rod of the first linkage frame has a receiving portion, the front reinforcing rod is an integrally formed structure and the central section of the front reinforcing rod It is assembled in the accommodating part, and the two ends of the central section respectively have a bending part, and the bending parts protrude from the accommodating part to be connected with the left section and the right section, The two rear reinforcing rods are respectively connected to the bent portion. As claimed in claim 4, the back-press type auxiliary rising chair, wherein the second linkage frame includes a main body and a support rod, the main body is mouth-shaped and one of the rear frame rods is hollow, and the support rod is through The portions located in the rear frame rod and protruding from the rear frame rod at both ends form the extension sections for connection with the rear legs. As claimed in claim 5, the back pressure auxiliary rising chair is characterized in that the pivot rods respectively have a first section and a second section arranged in succession, and one end of the first section is connected to the force-applying armrest. The front end is pivotally connected, the other end is connected to one end of the second section, and the front leg is pivotally connected to the connection between the first section and the second section, and the second section is connected to the opposite end. The end of the first section is pivotally connected to the rear leg, wherein both the first section and the second section are arc-shaped, and the first section is an upward convex arc-shaped, and the second section is Concave arc-shaped, the length of the first section is smaller than that of the second section. As described in claim 6, the back-pressing auxiliary rising chair is characterized in that the support rod is a cylinder with a diameter of 1 to 3 cm and a length of 60 to 80 cm. As claimed in any one of claims 1 to 7, the rear-pressure auxiliary rising chair is characterized in that the front end of the first linkage frame and the front end of the second linkage frame are in a flush state, and the pivot points are in a flush state with the front end of the second linkage frame. The distance between the front ends of the first linkage frame is L1, and the total length of the first linkage frame is L2, where L1:L2 is 1:3 to 1:3.5; the pivot points and the second linkage frame The distance between the front ends is L3, and the total length of the second linked frame is L4, where L3:L4 is 1:3 to 1:4.5. As described in claim 8, the back-press type auxiliary rising chair is provided, wherein L1:L2 is 1:3, and L3:L4 is 1:4. As claimed in claim 9, the rear push-type auxiliary rising chair is characterized in that the connecting part further has a protrusion, the protrusion is correspondingly located in the hollow area of the first linkage frame, and is supported by the first rear side of the seat. When the linkage frame is lifted, the bump can block the rear end of the first linkage frame.