TWM627016U - Device with stand assisting function - Google Patents

Abstract

The creation system includes a lower seat, two power sources, two first rod assemblies, two second rod assemblies and an upper seat. The lower seat has a virtual rotation axis, and the fixing parts of the two power sources, one end of the two first rod assemblies and one end of the two second rod assemblies are all pivotally connected to the lower seat. In addition, the upper seat is simultaneously erected on the movable parts of the two power sources, the other ends of the two first rod assemblies and the other ends of the two second rod assemblies. When the movable part of the power source is in the retracted position, the seat cushion part is in the sitting position. And when the movable part changes to the extended position, it pushes the seat cushion part to rotate with the virtual rotation axis as the center of the circle, so as to change from the sitting position to an auxiliary standing position. Therefore, this case has the advantages of taking the knee as the virtual rotation axis, which is quite ergonomic, and having no chute, which can greatly reduce the probability of maintenance and failure.

Description

standing aids

This creation relates to an assisting standing device, especially an assisting standing device that has the knee as a virtual rotation axis, which is quite ergonomic and has no chute, which can greatly reduce the probability of maintenance and failure.

Press, for the disabled or the elderly, sometimes it is not easy to stand up from the seat (or to sit on the seat). Currently, there are seat devices for assisting standing. The following designs are available:

1. Taiwan's new patent No. M291289 is a seat device with an auxiliary standing function. The key point is that when the air pressure rod is controlled to expand and contract, it is mainly through the pivot point of the air pressure rod to slide in the guide groove of the cushion frame to achieve the control of the seat cushion. The function of raising or lowering the frame from the wheelchair body.

The disadvantage is that the guide ditch is very easy to be dirty. Once it is dirty, it will affect the smoothness of the pivot point of the air pressure rod. In severe cases, it may even be impossible to lift.

2. The wheelchair that can assist standing in Taiwan Invention Patent No. I465230, the key point is that when controlling the retraction and retraction of the push unit, in addition to pushing the seat unit through the third pivot assembly, it is necessary to pass the first pivot assembly. (including multiple components), the disadvantage is that the related linkage structure is complex and the operation is complicated, which may be inconvenient for people with inconvenient mobility who have inflexible hands and feet.

3. The auxiliary stand-up device of Taiwan's new patent No. M505291 mainly consists of setting up a two-support high seat pad, but the two-support high seat pad can only be raised and lowered. It is impossible to rotate, and the human body sits down and stands up, both are not simple lifting movements, but include rotating movements with the knee as the axis. Therefore, the disadvantage of its design is that the simple lifting and lowering cannot fully assist the human body to sit or stand.

4. The assisting standing device of U.S. Patent No. 2021100411A1, and

5. About the 2011 Beijing University of Science and Technology Master's Thesis: Toilet Assisted Standing Mechanism. Since the shortcomings of these two designs are similar, they are briefly described as follows: The disadvantages include: [a] The seat cushion is raised too high, and the ankle must be raised, which may cause the user to put the toes on the toes. ; [b] The rotation angle of the seat cushion is too small; [c] It is necessary to set up an electric cylinder with a considerable thrust, and the cost is quite high.

Summarize the disadvantages of the aforementioned 5 designs:

(a) The part of the compound joint is a chute, which is easy to get stuck and difficult to clean and maintain.

(b) The chair cushion is raised too high, and the angular displacement of the thigh is also large. The ankle must be raised, which is more likely to cause danger.

(c) The rotation angle of the seat cushion is too small.

(d) The electric cylinder with a load of 100KG requires a large force to push the lower rod: Please refer to Figure 7A, which is a simplified schematic diagram of the aforementioned fifth design (Master's thesis of Beijing University of Science and Technology in 2011), which is provided with an electric cylinder GA1, and pushes the seat cushion GA3 through a plurality of connecting rods GA2. And the final thrust rises to more than 8000 Newtons (N) (as shown by the fourth thrust point M4 shown in the fourth curve L4 of FIG. 7B ), which causes the electric cylinder GA1 to be easily worn out.

Please refer to FIG. 8A, which is a simplified schematic diagram of the mechanism of the aforementioned fourth design (US Patent No. 2021100411A1), which is provided with an electric cylinder GB1 and pushes the seat cushion GB3 through a plurality of connecting rods GB2. The point is that the initial thrust needs to exceed 12,000 Newtons (N) (such as the fifth thrust point M5 shown in the fifth curve L5 in Fig. 8B ), and commercially available electric cylinders are difficult to find.

In view of this, it is necessary to develop a technology that can solve the above-mentioned conventional shortcomings.

The purpose of this creation is to provide an auxiliary standing device, which has the advantages of taking the knee as the virtual rotation axis, which is quite ergonomic, and has no chute, which can greatly reduce the probability of maintenance and failure. In particular, the problem to be solved by the present invention is that the first known device produces a guide groove that is easily dirty. Once dirty, it will affect the smoothness of the pivot point movement of the air pressure rod, and may even fail to lift. The second to fifth known devices have various problems, such as complicated structure, difficult to operate, unable to rotate the seat cushion simply raised, too high rise, insufficient rotation angle, and higher cost of electric cylinders that may require a larger thrust.

The technical means to solve the above problem is to provide an auxiliary standing device, which includes: a lower seat, which has a front end, a rear end, an upper end, a lower end, two side ends and a virtual rotation axis; The front end extends out and is adjacent to the upper end, and the lower seat has two first pivoting parts, two second pivoting parts and two third pivoting parts; the two first pivoting parts are respectively located at the lower end and Distributed on the two side ends, the two second pivot parts are respectively located on the upper end and distributed on the two side ends, the two third pivot parts are respectively located on the two side ends; and the two first pivot parts , the two second pivot parts and the two third pivot parts are adjacent to the rear end; two power sources are respectively arranged on the lower seat, each of the two power sources has a fixed part and a movable part, the movable part can be changed at least between a retracted position and an extended position, and the two power sources are respectively pivoted to the two first pivoting parts by the ends of the two fixed parts; two first rod assemblies , which are respectively pivoted on the two second pivot parts with one end; two second rod assemblies are pivoted on the two third pivot parts with one end respectively; and an upper seat is pivoted on the two power on the source, the two first rod assemblies and the two second rod assemblies; the upper seat has a cushion part, and two seat cushion first pivot parts and two seat cushion second pivot parts located on both sides of the seat cushion part and the third pivoting part of the two seat cushions; the first pivoting part of the two seat cushions is for the seat cushion part to be pivoted at the end of the two movable parts; the second pivoting part of the two seat cushions is for the seat cushion The part is pivoted at the other end of the two first rod assemblies ; The second pivot portion of the two seat cushions is for the seat cushion portion to be pivoted on the other ends of the two first rod assemblies; the third pivot portion of the two seat cushions is for the seat cushion portion to be pivoted to the second The other end of the two-rod assembly; thus, when the movable part is in the retracted position, the seat cushion part is mounted on the upper end and is in a seating position; and when the movable part is changed to the extended position, the movable part The system pushes the seat cushion with the virtual rotation axis as the center of the circle, and rotates corresponding to the upper end, so as to change from the sitting position to an auxiliary standing position.

The above objectives and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of the following selected embodiments.

Hereinafter, the present creation will be described in detail with the following examples and accompanying drawings:

10: The next seat

10A: Front end

10B: Backend

10C: Upper end

10D: lower end

10E: side end

11: The first pivot part

12: The second pivot part

13: The third pivot part

20: Power source

21: Fixed part

22: Activities Department

30: First rod assembly

40: Second rod assembly

50: Take the seat

51: Seat cushion

511: Lower extension

52: The first pivot part of the seat cushion

53: The second pivot part of the seat cushion

54: The third pivot part of the seat cushion

90: user

91: Knee

92: Feet

X: virtual rotation axis

P1: retracted position

P2: extended position

PA: Riding position

PB: Assisted Standing Position

θ 1: first angle

θ 2: second angle

GA1, GB1: electric cylinder

GA2, GB2: connecting rod

GA3, GB3: Chair cushion

L1: first curve

L2: Second curve

L3: Third Curve

L4: Fourth curve

L5: Fifth curve

M1: first thrust point

M2: Second thrust point

M3: Third thrust point

M4: Fourth thrust point

M5: Fifth thrust point

Figure 1A is a schematic diagram of the upper seat in the sitting position of this creation

Figure 1B is a schematic diagram of the corresponding relationship between Figure 1A and the toilet

The second picture is a schematic diagram of the upper seat in the auxiliary standing position of this creation

Figure 3A is a schematic diagram of one of the movement processes of the seat in this creation

Figure 3B is a schematic diagram of the second movement process of the seat of this creation

Figure 3C is a schematic diagram of the third movement process of the seat of the author.

Figure 4 is the first graph of this creation

Figure 5 is the second graph of this creation

Figure 6 is a graph of the thrust of the power unit of this creation

Fig. 7A is a simplified schematic diagram of the mechanism of the fifth known design

Figure 7B is a graph of the thrust force of Figure 7A

Figure 8A is a simplified schematic diagram of the known fourth design

Figure 8B is a graph of the thrust force of Figure 8A

Referring to Figures 1A, 1B and 2, the present invention is an auxiliary standing device, which includes: a lower base 10, which has a front end 10A, a rear end 10B, an upper end 10C, a lower end 10D, and two side ends 10E and a virtual axis of rotation X. The virtual rotation axis X extends from the front end 10A and is adjacent to the upper end 10C. And the lower seat 10 has two first pivot parts 11 , two second pivot parts 12 and two third pivot parts 13 . The two first pivot parts 11 are respectively located at the lower end 10D and distributed on the two side ends 10E, the two second pivot parts 12 are respectively located at the upper end 10C and distributed on the two side ends 10E, the two third The pivoting portions 13 are respectively located at the two side ends 10E; and the two first pivoting portions 11 , the two second pivoting portions 12 and the two third pivoting portions 13 are all adjacent to the rear end 10B.

Two power sources 20 are respectively disposed on the lower seat 10 , each of the two power sources 20 has a fixed part 21 and a movable part 22 , and the two power sources 20 are respectively connected by the two fixed parts The ends of 21 are pivoted on the two first pivoting parts 11 and can rotate relative to each other, and the two movable parts 22 of the two power sources 20 can be changed at least between a retracted position P1 and an extended position P2.

One end of the two first rod assemblies 30 is pivotally mounted on the two second pivoting portions 12 respectively, and can rotate relative to each other.

Two second rod assemblies 40 are pivotally mounted on the two third pivoting portions 13 at their one ends respectively, and can rotate relative to each other.

An upper seat 50 is pivotally mounted on the two power sources 20 , the two first rod assemblies 30 and the two second rod assemblies 40 . The upper seat 50 has a cushion portion 51 , and two seat cushion first pivot portions 52 , two seat cushion second pivot portions 53 , and two seat cushion third pivot portions 54 located on both sides of the seat cushion portion 51 . The first pivoting portion 52 of the two seat cushions is for the seat cushion portion 51 to be pivoted at the ends of the two movable portions 22 and can be rotated relative to each other; The two pivoting parts 53 are for the seat cushion part 51 to be pivoted on the other ends of the two first rod assemblies 30 and can rotate relative to each other, and the two seat cushion third pivoting parts 54 are for the seat cushion part 51 to pivot It is arranged on the other end of the two second rod assemblies 40 and can rotate relatively.

Therefore, when the two movable parts 22 are both located at the retracted position P1 (as shown in FIG. 3A ), the seat cushion part 51 is mounted on the upper end 10C and is located at a seating position PA; and when the two movable parts 22 In the process of changing from the retracted position P1 to the extended position P2 (sequentially changing from Fig. 3A, Fig. 3B to Fig. 3C ), the two movable parts 22 both push the seat cushion part 51 to rotate the virtual The axis X is the center of the circle, and the upper end 10C is rotated to change from the sitting position PA to an auxiliary standing position PB.

In practice, each of the two power sources 20 can be an electric cylinder.

The seat cushion portion 51 may further have two lower extension pieces 511 . The two lower extension pieces 511 correspond to the front end 10A respectively and extend downwards from both sides of the seat cushion portion 51 . The second pivot portion of the seat cushion portion 51 The second pivoting portion 53 of each seat cushion in 53 and the third pivoting portion 54 of each seat cushion in the third pivoting portion 54 of the two seat cushions are respectively located one above the other and the other corresponding to each seat cushion. on the extension piece 511.

When the two movable parts 22 are located at the retracted position P1 (as shown in FIG. 3A ), and the seat cushion part 51 is located at the sitting position PA, the two first rod assemblies 30 are respectively connected with the corresponding two second The rod assemblies 40 are generally parallel.

When the two movable parts 22 are both located at the extended position P2 (changed from FIG. 3A and FIG. 3B to FIG. 3C ), and the seat cushion part 51 is located at the auxiliary standing position PB.

There is a first angle θ1 between the two first rod assemblies 30 and the seat cushion portion 51 .

The first angle θ 1 may be between 30.5 degrees and 40.5 degrees.

The first angle θ 1 is preferably 35.5 degrees (as shown by the first curve L1 in FIG. 4 , it is about 35.5 degrees at 5 seconds).

Moreover, there may be a second angle θ 2 between the seat cushion portion 51 and the upper end 10C.

The second angle θ 2 may be between 36.2 degrees and 46.2 degrees.

The second angle θ 2 is preferably 41.2 degrees (as shown by the second curve L2 in FIG. 5 , it is about 41.2 degrees at 5 seconds).

Referring to Figure 1A, one of the application methods in this case can be an auxiliary seat cushion for the toilet of the handicapped toilet (as shown in Figure 1B). And has the following two ways of use:

[a] Ride: As shown in Figures 1A, 1B and 3A. When the movable portion 22 is located at the retracted position P1, the seat cushion portion 51 is erected on the upper end 10C, and is located at the sitting position PA for a user 90 to sit on the toilet. At this time, the knee 91 of the user 90 is close to The virtual rotation axis X (which can also be said to be coaxial), and the feet 92 of the user 90 are stably stepped on the ground, which can improve stability.

[b] Assisted standing: as shown in Figures 3B to 3C. The movable portion 22 is controlled to change from the retracted position P1 to the extended position P2, the movable portion 22 pushes the seat cushion portion 51 to take the virtual rotation axis X as the center of the circle, and rotates corresponding to the upper end 10C. The sitting position PA is changed to the auxiliary standing position PB.

For example, if the weight of the user 90 is 100 kg, the thrust required by the relative position (coupling rod) of the power source 20 and the seat cushion portion 51 can refer to the third curve shown in FIG. 6 L3 (corresponding to Fig. 3A having a first thrust point M1). The thrust required at the beginning is the largest (that is, the first thrust point M1), which is about 4796.5 Newtons (N), and then the thrust required becomes smaller and smaller (corresponding to Figure 3B, there is a second thrust point M2), about It is 39146 Newtons (N), and finally only a thrust of about 2990 Newtons (N) is required (corresponding to Fig. 3C, there is a third thrust point M3).

That is, in this case, the electric cylinder (the power source 20 ) is used to directly push the seat cushion (the seat cushion portion 51 ), in addition to reducing the thrust dispersion, the seat cushion portion 51 is connected to the knee 91 of the user 90 . as the virtual rotation The axis X can be the most ergonomic standing angle, so that the user 90 can switch between the sitting position PA and the auxiliary standing position PB under the condition that the feet 92 of the user 90 can pedal smoothly, and it can be safely to assist the user 90 in changing movements between sitting and standing. In addition, all joints (ie, each pivot part and its pivot device) are connected and actuated by rotating pairs (removing the disadvantage that the guide groove of the conventional device or the guide groove is easily dirty, which affects the movement of the pivot point).

Features of this creation:

(1). Simple structure, no chute design, easy maintenance.

(2). Use the electric cylinder to directly push the seat cushion (coupling rod), and use the knee position as the virtual center of rotation (in line with ergonomics).

(3). All joints are swivel pairs.

(4). The maximum driving force of the electric cylinder is small and stable.

The advantages and effects of this creation can be summarized as follows:

[1] Taking the knee as the virtual axis of rotation is quite ergonomic. The seat cushion in this case takes the virtual rotation axis (that is, the user's knee) as the center of the circle, and corresponds to the rotation of the lower seat, so that the most ergonomic angle can be used between the sitting position and the auxiliary standing position. It is used to assist the transition between sitting and standing when the user's feet are smoothly stepped on. Therefore, taking the knee as the virtual axis of rotation is quite ergonomic.

[2] No chute significantly reduces the chance of maintenance and failure. All pivot parts and related pivot elements in this case are designed as "rotating pairs", which greatly reduces the probability that the conventional device needs maintenance or even malfunctions due to dirty chutes. Therefore, no chute can greatly reduce the probability of maintenance and failure.

The above is only a detailed description of the present invention by means of the preferred embodiment, and any simple modifications and changes made to the embodiment do not depart from the spirit and scope of the present invention.

10: The next seat

10A: Front end

10B: Backend

10C: Upper end

10D: lower end

11: The first pivot part

12: The second pivot part

13: The third pivot part

20: Power source

21: Fixed part

22: Activities Department

30: First rod assembly

40: Second rod assembly

50: Take the seat

51: Seat cushion

511: Lower extension

52: The first pivot part of the seat cushion

53: The second pivot part of the seat cushion

54: The third pivot part of the seat cushion

X: virtual rotation axis

P2: extended position

PB: Assisted Standing Position

θ1: first angle

θ2: second angle

Claims (7)

An auxiliary standing device, comprising: a lower seat with a front end, a rear end, an upper end, a lower end, two side ends and a virtual rotation axis; the virtual rotation axis extends from the front end and is adjacent to the the upper end, and the lower seat has two first pivoting parts, two second pivoting parts and two third pivoting parts, the two first pivoting parts are respectively located at the lower end and distributed on the two side ends, the The two second pivot parts are respectively located at the upper end and distributed on the two side ends, the two third pivot parts are respectively located at the two side ends; and the two first pivot parts and the two second pivot parts and the two third pivot parts are adjacent to the rear end; two power sources are respectively set on the lower seat, each of the two power sources has a fixed part and a movable part, the two power sources The ends of the two fixed parts are respectively pivoted to the two first pivot parts, and the two movable parts of the two power sources can be changed between at least a retracted position and an extended position; two first rod assemblies, One end is pivoted on the two second pivot parts; two second rod assemblies are pivoted on the two third pivot parts respectively with one end; and an upper seat is pivoted on the two power sources , on the two first rod assemblies and the two second rod assemblies; the upper seat has a cushion part, and two seat cushion first pivot parts and two seat cushion second pivot parts located on both sides of the seat cushion part and a third pivoting portion of the two seat cushions, the first pivoting portion of the two seat cushions is for the seat cushion portion to be pivoted at the end of the two movable portions; the second pivoting portion of the two seat cushions is for the seat cushion portion pivoted at the other ends of the two first rod assemblies, and the third pivoting portion of the two seat cushions is for the seat cushion portion to be pivoted at the other ends of the two second rod assemblies; thus, when the two movable parts are both located in the retracted position, the seat cushion part is erected on the upper end, and is located in a sitting position; and when the two movable parts are both transformed from the retracted position to the extended position, the two The movable part pushes the seat cushion part with the virtual rotation axis as the center of the circle, and performs a rotation action corresponding to the upper end, so as to change from the sitting position to an auxiliary standing position. The standing assist device as claimed in claim 1, wherein each of the two power sources is an electric cylinder. The standing aid device according to claim 1, wherein: the seat cushion part has two lower extension parts, the two lower extension parts are respectively corresponding to the front end and extend downward from two sides of the seat cushion part; Each of the second pivotal joints of the seat cushion and the third pivotal joint of each of the second pivotal joints of the two seat cushions are located one above the other and one below the other corresponding to each other. on each of the lower extensions. The standing assist device according to claim 1, wherein when the two movable parts are both located at the retracted position and the seat cushion part is located at the sitting position, the two first rod assemblies are respectively associated with the corresponding two second rods The components are approximately parallel. The standing assist device according to claim 1, wherein: when the two movable parts are both located at the extended position, and the seat cushion part is located at the standing assist position; between the two first rod assemblies and the seat cushion part, All have a first angle; and between the seat cushion portion and the upper end, there is a second angle. The standing assist device as claimed in claim 5, wherein: The first angle is between 30.5 degrees and 40.5 degrees; and the second angle is between 36.2 degrees and 46.2 degrees. The standing assist device of claim 6, wherein: the first angle is 35.5 degrees; and the second angle is 41.2 degrees.

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