CN113101152B - Anti-falling sitting and standing dual-purpose rollator - Google Patents

Abstract

The invention provides a dual-purpose rollator for preventing falling and sitting, which comprises: a support mechanism; a seat mechanism; the lifting mechanism is respectively hinged with the supporting mechanism and the seat mechanism to drive the supporting mechanism and the seat mechanism to move up and down so as to switch the sitting posture; a base; the base comprises a fixed seat and a movable seat; the fixing seat is used for fixing the lifting mechanism; the seat mechanism is connected with the movable seat through the pushing mechanism, and when the seat mechanism ascends or descends, the pushing mechanism drives the movable seat to move along the front-back direction of the vehicle body, so that the area of the base is expanded or reduced. Lifting of the supporting mechanism and the seat mechanism is realized through the lifting mechanism, so that the sitting posture is switched; the seat mechanism enables the pushing mechanism to move in the lifting process, and then the movable seat can be driven to move along the front-back direction of the vehicle body, the area of the base is expanded or reduced, so that the gravity center of a user falls in the base to keep the balance of the vehicle body carrying the human body, and the human body is prevented from falling down due to backward tilting.

Description

An anti-fall rollator for sitting and standing

technical field

The invention relates to the field of nursing aids, in particular to a fall-proof rollator for sitting and standing.

Background technique

With the continuous development of science and technology and the increase of the population with lower limb disabilities, the performance and types of walking aids are constantly improving and increasing. walker. Compared with the sitting walker, the standing walker effectively prevents the problems of decubitus and muscle atrophy caused by users sitting in a wheelchair for a long time, and also has a certain rehabilitation effect.

The standing rollator uses the lifting mechanism and the seat mechanism to assist the user to switch between sitting and standing. However, since the center of gravity of the user is different when using the rollator in a sitting position and when using the rollator in a standing position, in order to prevent the center of gravity from moving backward when using the rollator in a sitting position The walking aids on the market will add a large amount of counterweight to the head of the body, generally 80kg-100kg, to balance the rearward movement of the center of gravity after a person sits down, which will lead to excessive weight of the vehicle. Large, inconvenient to use and transport, and a waste of energy. There are also some walkers, in order to ensure stability, the chassis is made longer, which increases the turning radius of the car body, which seriously affects the flexibility of the walker to complete some actions such as turning at home or in some small spaces. .

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides an anti-fall rollator for both sitting and standing, which can switch between sitting and standing postures, and has multiple uses. When the rollator body is switched between sitting and standing, The area of the base is adjusted accordingly to ensure that the user's center of gravity can fall on the base to prevent the user from falling backwards.

In order to achieve the above objectives, the present invention is achieved through the following technical solutions.

The present invention provides a fall-proof, dual-purpose rollator for sitting and standing, including a rollator body; the rollator body includes:

A support mechanism for supporting the upper limbs of a human body;

The seat mechanism is used to support the human buttocks;

The lifting mechanism is respectively hinged to the support mechanism and the seat mechanism to drive the support mechanism and the seat mechanism to move up and down to switch between sitting and standing postures;

The base is provided with a number of walking wheels; the base includes a fixed seat and a movable seat; the fixed seat is used to fix the lifting mechanism; the seat mechanism is connected to the movable seat through a pushing mechanism;

When the seat mechanism is raised or lowered, the push mechanism drives the movable seat to move along the front and rear directions of the vehicle body to expand or reduce the area of the base, so that the center of gravity of the user is located on the base when sitting or standing. within the vertical projection area.

Preferably, it also includes a frame fixed on the fixed seat; the lifting mechanism is hinged on the frame.

Preferably, the lifting mechanism includes an active part and a first connecting rod and a second connecting rod arranged in parallel up and down in the same longitudinal plane and having equal lengths; both ends of the first connecting rod and two ends of the second connecting rod are respectively hinged under the support mechanism and the frame; the two ends of the active part are respectively hinged to the second connecting rod and the frame;

The driving element is lifted up and down to drive the first connecting rod and the second connecting rod to rise and fall synchronously, so as to realize the lifting of the supporting mechanism.

Preferably, the bottom of the support mechanism is provided with a first right-angle connector; the upper plate of the first right-angle connector is arranged horizontally; the upper plate and the lower plate of the first right-angle connector are respectively hinged on the One end of the first connecting rod and the second connecting rod.

Preferably, the seat mechanism includes a seat, a third connecting rod, and a fourth connecting rod; both ends of the third connecting rod are respectively hinged to the seat and the frame; the two ends of the fourth connecting rod The ends are respectively hinged to the third connecting rod and the second connecting rod;

The lifting of the seat is realized through the transmission of the fourth connecting rod and the third connecting rod when the second connecting rod is raised and lowered.

Preferably, the pushing mechanism includes a fifth connecting rod, a chain, and a push rod; the first rotating shaft of the fifth connecting rod is coaxially connected with the rotating shaft of the third connecting rod, and the second rotating shaft is hinged to the chain The first end of the chain; the chain is bent, and the second end of the chain extends along the front and rear direction of the car body and is connected to the push rod; the push rod is movably connected to the fixed seat;

When the third connecting rod rotates, it drives the first rotating shaft to rotate, drives the second rotating shaft to drive the chain to move, and pushes the push rod to drive the movable seat to move along the front and rear directions of the vehicle body.

Preferably, the frame is provided with a fixed plate; the fixed plate is vertically arranged and provided with a slot, and the chain moves in the slot; a section of the slot close to the second rotating shaft is along the The movement track of the second rotating shaft is extended.

Preferably, the movement directions of the third link and the fifth link are opposite; the chain extends upward from the first end and then bends to extend downward to the second end.

Preferably, at least two running wheels at the bottom of the fixed base are electric wheels; the movable base has a U-shaped structure, and the running wheels at the bottom of both ends of the movable base are universal wheels.

Preferably, the supporting mechanism is provided with two underarm supports; the supporting mechanism is provided with a remote control for controlling the moving direction of the vehicle body.

Compared with the prior art, the beneficial effects of the present invention are:

The invention provides an anti-fall rollator for both sitting and standing. The supporting mechanism and the seat mechanism can be lifted up and down through the lifting mechanism to realize the switching of sitting and standing postures; the seat mechanism moves the pushing mechanism during the lifting process, Furthermore, the movable seat can be driven to move along the front and rear directions of the vehicle body, and the area of the base can be adjusted so that the user's center of gravity falls in the base, so as to keep the balance of the vehicle body carrying the human body and prevent the human body from falling backwards.

In a preferred solution, the lifting mechanism provides driving force through an active part, which has a simple structure, is easy to assemble, and saves processing costs.

In a preferred solution, the lifting mechanism realizes the transmission of the supporting mechanism and the seat mechanism through two first and second connecting rods with equal lengths and parallel to each other. The structure is simple, and it is convenient to maintain the supporting mechanism and the seat during the lifting process. The horizontal state of the chair mechanism.

In a preferred solution, the push mechanism pushes the movable seat through the fifth connecting rod, chain, and push rod, and cooperates with the seat mechanism. Only one power of the active part is needed to complete the switch between the sitting and standing postures of the body. And base length adjustment, simple structure, flexible body.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention will be described in detail below with accompanying drawings. The specific embodiment of the present invention is given in detail by the following examples and accompanying drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic diagram of the three-dimensional structure of the rollator body in the standing position of the present invention;

Fig. 2 is a schematic diagram of the three-dimensional structure of the rollator body in the sitting position of the present invention;

Fig. 3 is a schematic diagram of the local structure of the rollator body in the standing position of the present invention;

Fig. 4 is a partial structural schematic diagram of the base of the present invention;

Fig. 5 is the schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

Fig. 6 is a schematic diagram of the assembly structure of the fixing plate and the chain of the present invention.

In the picture:

100. Roller body;

10. Support mechanism; 11. First right-angle connector; 111. Upper plate; 112. Lower plate; 12. Underarm support; 121. First support plate; 122. Second support plate; 13. Chest guard ; 14. Auxiliary handrails;

20. Seat mechanism; 21. Seat; 22. The third connecting rod; 23. The fourth connecting rod;

30. Lifting mechanism; 31. Active part; 32. First connecting rod; 33. Second connecting rod; 34. Second right-angle connector;

40, base; 41, fixed seat; 411, fixed block; 412, electric wheel; 42, movable seat; 421, universal wheel;

50. Rack; 51. Fixed plate; 501. First fixed plate; 502. Second fixed plate; 511. Card slot; 5111. Channel; 52. First connector; 53. Second connector;

61, the fifth connecting rod; 611, the first shaft; 612, the second shaft; 62, the chain; 621, the first end; 622, the second end; 623, the first chain segment; 624, the second chain segment; 625 , the third chain segment; 63, the push rod; 64, the latch;

70. Remote control;

80, knee protection mechanism; 81, knee protection plate; 82, expansion part; 83, knee protection frame.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, and the foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement them with reference to the description. In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are generally not intended to require a specific orientation. Terms referring to attachment, coupling, etc. (e.g., "connected" and "attached") refer to a fixed or attached relationship, as well as a movable or rigid attachment or relationship, of structures to one another, directly or indirectly through intermediate structures, unless otherwise stated in The other way is clearly stated.

Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

Example 1

The present invention provides a fall-proof, sit-stand dual-purpose rollator, as shown in Figure 1, Figure 2, and Figure 4, which includes a rollator body 100, and the rollator body 100 includes:

The support mechanism 10 is used to support the upper limb of the human body;

The seat mechanism 20 is used to support the buttocks of the human body;

The lifting mechanism 30 is respectively hinged to the support mechanism 10 and the seat mechanism 20 to drive the support mechanism 10 and the seat mechanism 20 to move up and down, so as to switch between sitting and standing postures;

The base 40 is provided with several walking wheels; the base 40 includes a fixed seat 41 and a movable seat 42; the fixed seat 41 is used to fix the lifting mechanism 30; the seat mechanism 20 is connected to the movable seat 42 by a pushing mechanism ;

When the seat mechanism 20 is raised or lowered, the pushing mechanism drives the movable seat 42 to move along the front and rear direction of the vehicle body to expand or reduce the area of the base 40, so that the center of gravity of the user is located in both sitting and standing postures. The base 40 is within the vertical projection area.

Specifically, the support mechanism 10 and the seat mechanism 20 jointly form a support for the upper body and the lower body of the human body, so as to stably support the human body. In one embodiment, the rollator body 100 is further provided with a seat belt to restrain the human body, and firmly fix the human body when the user is completely weak.

Specifically, the lifting mechanism 30 is fixed relative to the fixed seat 41, and the lifting mechanism 30 can move up or down relative to the fixed seat 41. Since the lifting mechanism 30 is hinged to the supporting mechanism 10 and the seat mechanism 20, when the lifting mechanism 30 moves up and down, Under the downward force of the human body on the supporting mechanism 10, when the lifting mechanism 30 props up the supporting mechanism 10, it rotates at a certain angle relative to the supporting mechanism 10, and the supporting mechanism 10 does not rotate relative to the horizontal plane during the lifting process, so as to ensure that the supporting mechanism 10 maintain a relatively horizontal state to stably support the upper limbs of the human body, by restricting the hinge point of the support mechanism 10 and the lifting mechanism 30 to be in a dead point or locked state when the switch between the sitting and standing postures is completed, so as to ensure that the support structure 10 Under its own gravity, it will not rotate the supporting mechanism relative to the lifting mechanism 30 . For the seat mechanism 20, when the lifting mechanism 30 moves up and down, it drives the seat mechanism 20 to move up and down, so as to adjust the position of the human buttocks.

Specifically, while the base 40 is provided with a fixed seat 41 and a movable seat 42 to support the vehicle body, the length of the base 41 can be adjusted by moving the movable seat 42 along the front and rear directions of the vehicle body, so as to support the situation when different postures of sitting and standing result in different centers of gravity. human body. When switching to a standing posture, the center of gravity moves forward relative to the car body, and the lifting mechanism 30 props up the support mechanism 10 to match the height of the upper limbs of the human body while driving the seat mechanism 20 to rise, and the rise of the seat mechanism 20 drives the pushing mechanism to drive the movable seat 42 moves close to the fixed seat 41, thereby shortening the overall length of the base 40 and ensuring the flexibility of the vehicle body in motion. When switching to a sitting posture, the center of gravity moves backward relative to the vehicle body, and the lifting mechanism 30 descends so that the support mechanism 10 descends to match the height of the lower limbs of the human body during the sitting posture. The seat mechanism 20 descends so that the pushing mechanism drives the movable seat 42 to move away from the fixed seat 41, thereby extending the overall length of the base 40, ensuring that the center of gravity of the user always falls on the base 40 when sitting down, and preventing the human body from leaning backward. That is, the rollator body 100 is driven by the lifting mechanism 30, the seat mechanism 20, and the driving mechanism, so that the movable seat 42 cooperates with the vehicle body to switch between sitting and standing postures and runs along the front and rear directions of the vehicle body to adjust the length of the base 40 to ensure that the base 40 The stable support for the car body and the center of gravity of the human body prevents the human body from falling.

In one embodiment, the rollator body 100 further includes a frame 50 fixed on the fixing seat 41 ; the lifting mechanism 30 is hinged on the frame 50 . The elevating mechanism 30 is fixed by the frame 50 to shorten the overall length of the elevating mechanism 30. On the one hand, the lifting range of the elevating mechanism 30 is controlled, and on the other hand, the processing cost of the elevating mechanism 30 with a complicated structure is saved.

Further, the frame 50 is vertically arranged, has a simple structure and can provide stable support.

Further, the frame 50 is arranged on the upper surface of the fixing seat 41 and is arranged close to the front end of the fixing seat 41, so as to facilitate the balanced design of the vehicle body.

In one embodiment, the lifting mechanism 30 includes a driving member 31 and a first connecting rod 32 and a second connecting rod 33 which are arranged in parallel up and down in the same longitudinal plane and have equal lengths; the first connecting rod 32, the Both ends of the second connecting rod 33 are respectively hinged below the supporting mechanism 10 and the frame 50;

The active member 31 is lifted up and down to drive the first connecting rod 32 and the second connecting rod 33 to rise and fall synchronously, so as to realize the lifting of the supporting mechanism 10 . Specifically, during the lifting process of the lifting mechanism 30 , the first connecting rod 32 and the second connecting rod 33 always form a parallelogram structure, which is simple in structure. When the active part 31 pushes or pulls down the second connecting rod 33, the first connecting rod 32, the second connecting rod 33 rotate relative to the hinge point of the frame 50, then in order to match the first connecting rod 32, the second connecting rod 33 forms With a parallelogram structure, the hinge points of the first connecting rod 32 and the second connecting rod 33 relative to the supporting mechanism 10 also rotate, thereby maintaining the supporting mechanism 10 in a relatively horizontal state and lifting the supporting mechanism 10 at the same time. Due to the parallelogram structure formed by the first connecting rod 32 and the second connecting rod 33 and located below the support mechanism 10, when the driving member 31 stops driving, the first connecting rod 32 and the second connecting rod 33 do not move relative to the frame 50. Rotate, then in order to match the parallelogram structure that the first connecting rod 32, the second connecting rod 33 form, the first connecting rod 32, the second connecting rod 33 do not rotate relative to the support mechanism 10, that is, the first connecting rod 32, the second connecting rod The two hinge points of the two connecting rods 33 relative to the support mechanism 10 are in a dead point state at this time. Even if the support mechanism 10 is self-weight, the support mechanism 10 is maintained in a relatively horizontal state, so that the support mechanism 10 is always in a relative position when the vehicle body sits and stands. Horizontal state to support the upper limbs of the human body stably. The active part 31 includes but is not limited to an electric push rod and an electric cylinder, which can realize automatic expansion and contraction, so as to drive the second connecting rod 33 to drive the first connecting rod 32 to move up and down. The active part 31 is simple in structure. Power is provided by the active part 31, and together with the first connecting rod 32 and the second connecting rod 33, they form a lifting transmission mechanism, which can realize the lifting of the supporting mechanism 10 and the seat mechanism 20.

Further, the active member 31 is in the same longitudinal plane as the first connecting rod 32 and the second connecting rod 33, so as to facilitate the design of the effect of the assembly position of the active member 31, the first connecting rod 32, and the second connecting rod 33 on the lifting range of the vehicle body. control.

Furthermore, both the first connecting rod 32 and the second connecting rod 33 are telescopic rods, which can be adjusted in equal lengths to ensure that the support mechanism 10 is in a horizontal state and at the same time adjust the vehicle body size to match human bodies of different shapes.

Further, the bottom of the support mechanism 10 is provided with a first right-angle connecting piece 11; the upper plate 111 of the first right-angle connecting piece 11 is arranged horizontally; the upper plate 111 and the lower plate of the first right-angle connecting piece 11 The member 112 is hinged to one end of the first connecting rod 32 and the second connecting rod 33 respectively. The hinge connection between the support mechanism 10 and the first connecting rod 32 and the second connecting rod 33 is realized by the first right-angled connecting piece 11. The first right-angled connecting piece 11 has a certain supporting strength and is simple in structure. The rod 32 and the second connecting rod 33 cooperate to realize the horizontal support of the supporting mechanism 10 by the first connecting rod 32 and the second connecting rod 33 .

Further, the first connecting rod 32 and the second connecting rod 33 are respectively hinged on the top of the frame 50 . Specifically, a first connecting piece 52 is provided on the top wall of the frame 50 , and a second connecting piece 53 is provided on the side wall of the top end of the frame 50 . The first connecting piece 52 and the second connecting piece 53 are hinged with the first connecting rod 32 and one end of the second connecting rod 33 respectively, and the first connecting piece 52 and the second connecting piece 53 form a right angle connecting structure, and the first connecting rod 52 and the second connecting piece 53 form a right angle connecting structure, The right-angle connectors 11 cooperate to realize the hinge connection of the two ends of the first connecting rod 32 and the second connecting rod 33 .

In one embodiment, the seat mechanism 20 includes a seat 21, a third link 22, and a fourth link 23; the two ends of the third link 22 are respectively hinged to the seat 21, the machine frame 50; both ends of the fourth connecting rod 23 are respectively hinged to the third connecting rod 22 and the second connecting rod 33;

The lifting of the seat 21 is realized through the transmission of the fourth connecting rod 23 and the third connecting rod 22 when the second connecting rod 33 is raised and lowered. Specifically, the hinge point between the seat 21 and the third link 22 is used to realize the rotational adjustment of the position of the seat 21, and then realize the folding and stowing or opening of the seat 21, so as to meet the different needs of the user for getting on and off the car. Further, the switch between the fixed connection and the rotational connection between the seat 21 and the third link 22 is realized by a mechanical locking method (such as a locking wrench). Taking the active part 31 as an electric push rod as an example to elaborate, when the car body is switched from a sitting position to a standing position, the active part 31 is extended to drive the first connecting rod 32 to move upward by jacking up the second connecting rod 33, And the hinge points at both ends of the first connecting rod 32 and the second connecting rod 33 rotate to prop up the supporting mechanism 10; the second connecting rod 33 moves upwards to pull up the fourth connecting rod 23, and the fourth connecting rod 23 moves upwards to pull up the fourth connecting rod 23; Three connecting rods 22, the hinge points at the two ends of the third connecting rod 22 rotate to cooperate with the upward movement of the third connecting rod 22, driving the seat 21 to move upward, and then realize the switch from a sitting posture to a standing posture. When the car body is switched from a standing posture to a sitting posture, the active part 31 is retracted, and the second connecting rod 33 is pulled downward to drive the first connecting rod 32 to move downward, and the two ends of the first connecting rod 32 and the second connecting rod 33 The hinge point rotates, so that the support mechanism 10 moves downward; the second connecting rod 33 moves downward to press the fourth connecting rod 23, and the fourth connecting rod 23 moves downward to press the third connecting rod 22, and the third connecting rod 22 The hinge points at both ends rotate to cooperate with the downward movement of the third connecting rod 22, which drives the seat 21 to move downward, and then realizes switching from a standing posture to a sitting posture.

Further, the driving element 31 , the first connecting rod 32 , the second connecting rod 33 , the third connecting rod 22 and the fourth connecting rod 23 are all symmetrical about the same vertical plane, so as to facilitate the balanced design of the vehicle body.

Furthermore, the active part 31 and the fourth connecting rod 23 are connected below the second connecting rod 33 through the second right-angle connecting part 34, which reduces the amount of connecting parts and simplifies the difficulty of car body design.

In one embodiment, as shown in FIG. 1 , FIG. 2 , and FIG. 3 , the pushing mechanism includes a fifth connecting rod 61, a chain 62, and a push rod 63; the first rotating shaft 611 of the fifth connecting rod 61 is connected to the The rotating shaft of the third connecting rod 22 is coaxially connected, and its second rotating shaft 612 is hinged to the first end 621 of the chain 62; extending and connected to the push rod 63; the push rod 63 is movably connected to the fixing base 41;

When the third connecting rod 22 rotates, it drives the first rotating shaft 611 to rotate, and drives the second rotating shaft 612 to drive the chain 62 to move, so as to push the push rod 63 to drive the movable seat 42 along the front and rear direction of the vehicle body. sports. Specifically, when the lifting mechanism 30 lifts, the third connecting rod 22 rotates relative to the rotating shaft of the fifth connecting rod 61, and then rotates together with the first rotating shaft 611, so that the shaft of the fifth connecting rod 61 is relative to the first rotating shaft. When the rotating shaft 611 rotates, the second rotating shaft 612 is displaced longitudinally, so as to apply a driving force in the longitudinal direction to the first end 621 of the chain 62, so that the chain 62 is displaced longitudinally, and the second end 622 of the chain 62 will move forward and backward along the vehicle body. direction, so that the push rod 63 moves along the front and rear directions of the car body; and when the push rod 63 moves along the front and rear directions of the car body, it will drive the movable seat 42 to move along the front and rear directions of the car body, so as to realize the adjustment of the length of the base 40, so as to ensure that the car body When switching between sitting and standing postures, the center of gravity of the human body falls on the base 40 all the time when the human body sits down, so as to prevent the human body from falling backwards.

In one embodiment, as shown in Fig. 1, Fig. 2, Fig. 5 and Fig. 6, the frame 50 is provided with a fixed plate 51; Move in the card slot 511. The movement track of the chain 62 is defined by the slot 511 . A section of the groove 5111 of the engaging slot 511 close to the fifth connecting rod 61 extends along the movement track of the second rotating shaft 612 of the fifth connecting rod 61 , so as to facilitate the movement of the chain 62 to match the movement of the second rotating shaft 612 .

Further, the fixing plate 51 is disposed on the left or right side of the frame 50 to facilitate the connection of the fifth connecting rod 61 and the third connecting rod 22 .

Further, the peripheral profile of the fixing plate 51 extends along the extending direction of the chain 62 to improve the visual aesthetics.

Further, the fixing plate 51 includes a first fixing plate 501 and a second fixing plate 502 to facilitate the assembly of the fixing plate 51 . The first fixing plate 501 is a plate-shaped structure for fixing the upper curved section of the chain 62 , and the second fixing plate 502 is an L-shaped structure for fixing the lower curved section of the chain 62 .

Further, as shown in FIG. 1 and FIG. 3 , the movement directions of the third connecting rod 22 and the fifth connecting rod 61 are opposite, so the third connecting rod 22 can rotate in the opposite direction with the fifth connecting rod 61 when rotating. , by arranging the third connecting rod 22 and the fifth connecting rod 61 on both sides of the hinge point respectively, so that the fifth connecting rod 61 rotates to drive the movement process of the chain 62 without interfering with the third connecting rod 22 exercise. The positions of the elevating mechanism 30 and the pushing mechanism are reasonably arranged so as to facilitate the vehicle body posture switching. Further, as shown in FIG. 6 , the chain 62 extends upward from the first end 621 and then bends to extend downward to the second end 622 . Let the chain 62 extend upward from the first end 621 to be the first chain segment 623, and extend downward from the end of the first chain segment 623 to form the second chain segment 624, which extends forward and backward from the end of the second chain segment 624 along the vehicle body The extension of the direction is the third segment 625 ; the first end 621 is disposed on the first segment 623 , and the second end 622 is disposed on the third segment 625 . Since the third connecting rod 22 and the fifth connecting rod 61 move in the opposite direction and the first chain segment 623 and the second chain segment 624 move in the opposite direction, when the car body rises (the sitting position is switched to the standing position) ), the third connecting rod 22 moves upward, the fifth connecting rod 61 rotates downward, the first end 621 of the chain 62 drives the first chain segment 623 to move downward, and the second chain segment 624 moves upward, finally making the first chain segment 623 move downward. The three chain segments 625 drive the movable seat 42 to move close to the fixed seat 41 to shorten the length of the base 40 . On the contrary, the principle is similar when the vehicle body descends, and will not be repeated here. By limiting the movement direction of the third connecting rod 22 and the fifth connecting rod 61, and limiting the bending direction of the chain 62, the purpose of switching between sitting and standing of the vehicle body and adjusting the length of the base 42 is realized, and the structure of the vehicle body is simplified to improve Roller body 100 flexibility.

It should be understood that the first end 621 and the second end 622 of the chain 62 may represent links at the two ends of the chain 62 respectively, or may be links near the ends of the chain 62 . In order to effectively utilize the transmission of the chain 62 , the first end 621 and the second end 622 of the chain 62 represent two end links of the chain 62 respectively.

In one embodiment, as shown in FIG. 1 , FIG. 2 , and FIG. 4 , the push rod 63 is movably connected under the fixing seat 41 , and is hidden to improve the aesthetics of the vehicle body. In one embodiment, the fixing seat 41 is a plate-shaped structure to provide a stable support force. Further, the fixed plate 51 includes a first fixed plate 501 and a second fixed plate 502; the fixed seat 41 is provided with a through groove, the second fixed plate 502 has an L-shaped structure, and the lateral side plate of the second fixed plate 502 is inserted into the fixed seat 41 In the through slot on the top, the chain 62 located on the second fixed plate 502 is located below the fixed seat 41 , so that the push rod 63 located below the fixed seat 41 is connected to the second end 622 of the chain 62 .

Further, as shown in FIG. 4 , the second end 622 of the chain 62 is connected to the push rod 63 through a pin 64 , and the pin 64 has a simple and compact structure.

In one embodiment, as shown in FIG. 4 , the push rod 63 has an optical axis structure, and the push rod 63 has a simple structure and is convenient for flexible connection with the fixing seat 41 . Furthermore, the fixing base 41 is provided with a fixing block 411, and a through hole is formed in the fixing block 411, and the push rod 63 is movably connected in the through hole, and the assembly structure is simple.

In one embodiment, as shown in FIG. 1 , at least two running wheels at the bottom of the fixed seat 41 are electric wheels 412 to drive the rollator body 100 to walk; the movable seat 42 has a U-shaped structure, and the movable seat 42 The running wheels provided at the bottoms at both ends are universal wheels 421 . Specifically, the movable seat 42 has a U-shaped structure, which is simple in structure and stable in support. The movable seat 42 of the U-shaped structure is convenient to be inserted into both sides of furniture such as toilets and chairs, so that the user can move from the rollator body 100 to other positions in the home. . In order to facilitate the activities of the movable seat 42 , its weight is lower than that of the fixed seat 41 , and its stability is weaker than that of the fixed seat 41 . The electric wheel 412 is arranged on the bottom of the fixed seat 41, and the universal wheel 421 is arranged on the bottom of the movable seat 42, which is more conducive to the driving of the vehicle body by the wheel structure.

In one embodiment, as shown in FIGS. 1 and 2 , the support mechanism 10 is provided with two underarm support members 12 . Further, the underarm support 12 includes a first support plate 121 and a second support plate 122 perpendicular to each other, the first support plate 121 is used to support the lower arm, and the second support plate 122 is used to limit the left and right sides of the human body. The support mechanism 10 is provided with a remote control member 70 for controlling the moving direction of the car body. Further, the remote control member 70 is a joystick.

In one embodiment, as shown in Fig. 1 and Fig. 2, the support mechanism 10 also includes a chest guard 13, and an outer surface of the chest guard 13 facing the human body is a concave curved surface, which is used to fit the frontal contour of the upper body of the human body. To support the body of the column person leaning forward.

Further, the support mechanism 10 also includes an adjustment mechanism (not shown in the figure), used to adjust the horizontal and vertical positions of the chest shield 13, and/or used to adjust the horizontal and vertical positions of the two underarm supports 12 respectively, so as to Suitable for people of different heights and shapes.

In one embodiment, as shown in FIG. 1 and FIG. 2 , the support mechanism further includes an auxiliary handrail 14 for the nursing staff to hold to push the rollator body 100 .

In one embodiment, as shown in FIG. 1 , FIG. 2 , and FIG. 3 , the rollator body 100 further includes two sets of knee protectors 80 , which are used to limit human knees and lower limbs. Further, two pairs of knee protection mechanisms 80 are arranged symmetrically.

Further, the knee protection mechanism 80 includes a knee protection board 81, a telescopic member 82, and a knee protection frame 83. The knee protection board 81 is used to abut against the human knee; The front and rear directions of the car body are moved to adjust the front and rear positions of the knee pads 81 . The telescoping member 82 is connected to a knee protector 83 , and the knee protector 83 is connected to the frame 50 . The knee protector 83 can move vertically to adjust the vertical height of the knee protector 81 . Furthermore, by adjusting the front and rear, up and down positions of the knee pad 81, the needs of users with different heights and leg lengths can be met.

The method for the user to get on the car includes the following steps:

S11. The user sits on a chair or beside the bed, and the remote control rollator body 100 moves to the front of the user, keeping the seat 21 in a folded state;

S12. The user puts the feet on the fixing seat 41, fixes the calf and the waist with the safety belt, and supports the armpits with the underarm support member 12;

S13. Control the active part 31 to pick up the user to a standing state;

S14. Expand the seat 21 so that it is attached to the user's buttocks;

S15. The user can control the rollator to drive, and can switch between a sitting posture and a standing posture by controlling the active part 31 .

The method for the user to get off the car includes the following steps:

S21. Control the rollator body 100 to move to a suitable position in front of the chair or bed, and the user adjusts the posture to a standing posture;

S22. Utilize the underarm support member 12 to support the armpit;

S23, folding seat 21;

S24. Control the active part 31 to land, and place the user on a chair or beside a bed;

S25. The user releases the fixation of the waist and lower legs;

S26. The remote control rollator body 100 moves to a proper position.

When the user is on the chair or the edge of the bed and wants to get on the vehicle, or when the user wants to get off the vehicle from the rollator body 100 to the edge of the bed or the chair, in order to ensure that the rollator body 100 can move to the position closest to the bed or chair, The seat 21 can be folded; when the user is using the rollator body 100, no matter standing or sitting, the seat 21 can be unfolded to support the buttocks and ensure the safety of the user. When the seat 21 is turned over, the seat 21 can be turned around the hinge point of the seat 21 and the third connecting rod 22, and the seat 21 is locked by mechanical locking when turned in place.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form; all those skilled in the art can smoothly implement the present invention as shown in the accompanying drawings and above; however, all Those skilled in the art who make use of the above-disclosed technical content within the scope of the technical solutions of the present invention to make some changes, modifications and equivalent changes are all equivalent embodiments of the present invention; meanwhile, Any equivalent changes, modifications and evolutions made to the above embodiments based on the substantive technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (8)

1. A dual-purpose rollator of sitting at station prevents falling, includes rollator body (100), characterized in that, rollator body (100) includes:

a support mechanism (10) for supporting the upper limb of the human body;

a seat mechanism (20) for supporting the buttocks of a person;

the lifting mechanism (30) is respectively hinged with the supporting mechanism (10) and the seat mechanism (20) to drive the supporting mechanism (10) and the seat mechanism (20) to move up and down so as to switch the sitting posture;

a base (40) provided with a plurality of travelling wheels; the base (40) comprises a fixed seat (41) and a movable seat (42); the fixed seat (41) is used for fixing the lifting mechanism (30); the seat mechanism (20) is connected to the movable seat (42) through a pushing mechanism;

when the seat mechanism (20) ascends or descends, the pushing mechanism drives the movable seat (42) to move along the front-back direction of the vehicle body so as to expand or reduce the area of the base (40), so that the gravity center of a user is positioned in the vertical projection area of the base (40) when in two postures of sitting and standing;

the seat mechanism (20) comprises a seat (21) and a third connecting rod (22), and the third connecting rod (22) is hinged to the seat (21);

the pushing mechanism comprises a fifth connecting rod (61), a chain (62) and a push rod (63); the first rotating shaft (611) of the fifth connecting rod (61) is coaxially connected with the rotating shaft of the third connecting rod (22), and the second rotating shaft (612) of the fifth connecting rod is hinged with the first end (621) of the chain (62); the chain (62) is bent, and a second end (622) of the chain (62) extends along the front-rear direction of the vehicle body and is connected to the push rod (63); the push rod (63) is movably connected with the fixed seat (42);

when the third connecting rod (22) rotates, the first rotating shaft (611) is driven to rotate, the second rotating shaft (612) is driven to drive the chain (62) to move, so that the push rod (63) is pushed to drive the movable seat (42) to move along the front-back direction of the vehicle body;

the supporting mechanism (10) is provided with two armpit supporting pieces (12); a remote control (70) is arranged on the supporting mechanism (10) and used for controlling the movement direction of the vehicle body;

the seat mechanism (20) rises to drive the pushing mechanism to drive the movable seat (42) to move close to the fixed seat (41), so that the overall length of the base (40) is shortened, and the seat mechanism (20) descends to drive the movable seat (42) to move away from the fixed seat (41), so that the overall length of the base (40) is prolonged.

2. Rollator for use in both fall and sitting positions according to claim 1, further comprising a frame (50) fixed to the fixed seat (41); the lifting mechanism (30) is hinged to the frame (50).

3. A rollator for both sitting and standing as claimed in claim 2, wherein the lifting mechanism (30) comprises a driving member (31) and a first link (32) and a second link (33) which are arranged in parallel up and down in the same longitudinal plane and have the same length; both ends of the first connecting rod (32) and both ends of the second connecting rod (33) are respectively hinged below the supporting mechanism (10) and the rack (50); two ends of the driving piece (31) are respectively hinged to the second connecting rod (33) and the frame (50);

the driving piece (31) is lifted to drive the first connecting rod (32) and the second connecting rod (33) to synchronously lift so as to realize the lifting of the supporting mechanism (10).

4. A rollator for both sitting and standing use, according to claim 3, characterized in that the bottom of the supporting means (10) is provided with a first right angle connection (11); the upper plate (111) of the first right-angle connecting piece (11) is horizontally arranged; the upper plate (111) and the lower plate (112) of the first right-angle connecting piece (11) are respectively hinged to one ends of the first connecting rod (32) and the second connecting rod (33).

5. A rollator for both fall and sitting positions according to claim 3, characterized in that the seat mechanism (20) further comprises a fourth link (23); two ends of the third connecting rod (22) are respectively hinged to the seat (21) and the frame (50); two ends of the fourth connecting rod (23) are respectively hinged to the third connecting rod (22) and the second connecting rod (33);

when the second connecting rod (33) is lifted, the lifting of the seat (21) is realized through the transmission of the fourth connecting rod (23) and the third connecting rod (22).

6. Rollator for use in a fall and sitting position according to claim 5, characterized in that the frame (50) is provided with a fixing plate (51); the fixing plate (51) is vertically arranged and provided with a clamping groove (511), and the chain (62) moves in the clamping groove (511); the clamping groove (511) is close to a section of channel (5111) of the second rotating shaft (612) and extends along the movement track of the second rotating shaft (612).

7. A rollator for both sitting and standing as claimed in claim 1, characterized in that the third link (22) and the fifth link (61) are moved in opposite directions; the chain (62) extends upwardly from a first end (621) and then bends to extend downwardly to the second end (622).

8. The rollator for both sitting and standing as claimed in claim 1, wherein at least two walking wheels at the bottom of the fixed seat (41) are electric wheels (412); the movable seat (42) is of a U-shaped structure, and travelling wheels arranged at the bottoms of two ends of the movable seat (42) are universal wheels (421).

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