TWI535431B - Wheelchair units that can be lifted by tilting - Google Patents

Description

Wheelchair device that can be tilted and tilted

The invention relates to a wheelchair device capable of labor-saving turning and tilting, in particular to a wheelchair device which can reduce the tilting force and the mechanical structure and achieve the labor-saving effect.

In today's wheelchair structure, it is no longer a simple ride design, it must be multi-functional, such as sitting, reclining or lying flat.

In view of the fact that in a wheelchair, if you are sitting for a long time, you may not be tired, and you may need to change your posture. However, if you are in a wheelchair, you must be inconvenient to move. It is even more inconvenient to change your posture. Even if the position can be changed by the accompanying care assistant, the care of the wheelchair will still be caused by the poor design of the wheelchair. Therefore, wheelchairs that are usually easy to change position have a power-assisted transposition design. Of course, the price is relatively expensive, and may be inoperable due to lack of electricity or electronic component failure.

At present, there is no pure mechanical design, and it can achieve a wheelchair-saving design with labor-saving tilting.

In view of this, it is necessary to develop a technique that can solve the above disadvantages.

It is an object of the present invention to provide a wheelchair device that can be tilted and tilted, and which has the advantages of a wheelchair device that can save labor, tilting and mechanical structure, and the same labor-saving effect. In particular, the problem to be solved by the present invention is that there is no pure mechanical design at present, and the problem of a wheelchair design that is labor-saving and tilting can be achieved.

The technical means for solving the above problems is to provide a wheelchair device capable of tilting and tilting, comprising: a pair of bottom frame assemblies, each bottom frame assembly comprising a bottom frame body, a front wheel and a rear wheel; the bottom frame body The utility model has a front wheel pivoting portion, a rear wheel pivoting portion, a first pivoting portion, a second pivoting portion, a third pivoting portion and a fourth pivoting portion; the front and the rear wheel trains respectively The pivoting mechanism is pivoted to the front and the rear wheel; the ride mechanism has a front support portion and a rear support portion; the ride mechanism is pivotally disposed between the pair of bottom frame assemblies and is rotatable relative to each other; The pivoting assembly is respectively disposed between the pair of bottom frame assemblies and the riding mechanism; each pivoting assembly comprises: a front sliding sleeve pivotally disposed on the front supporting portion; a rear sliding sleeve The first rod member is pivotally disposed at the first and second pivoting portions, and the pair of first rod members are sleeved on the first rod member. The front sliding sleeve is movable relative to the front sliding sleeve; a pair of second rod members, one ends of the two second rod members are respectively pivoted The fourth pivoting portion; and the pair of second rods are sleeved on the rear sliding sleeve and movable relative to the rear sliding sleeve; thereby, the riding mechanism is used to carry a user and constitute a combination When the body has a center of gravity, and when the ride mechanism and the pair of pivotal components are rotated and tilted, the front support portion A front arc moving track is generated, and the rear support portion generates a rear arc moving track, and the front arc moving track and the rear arc moving track form an instantaneous rotating center, and the instantaneous rotating center and the center of gravity The distance system is less than 5 cm.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the preferred embodiments illustrated herein.

The invention will be described in detail in the following examples in conjunction with the drawings:

10‧‧‧Bottom frame assembly

11‧‧‧ bottom frame

111‧‧‧Front wheel pivoting department

112‧‧‧ Rear Wheels Department

113‧‧‧First pivotal

114‧‧‧Second pivotal

115‧‧‧The third pivotal

116‧‧‧fourth pivotal

12‧‧‧ front wheel

13‧‧‧ Rear wheel

20‧‧‧ rides

20A‧‧‧ push

20B‧‧‧ backrest

20C‧‧‧ seats

20D‧‧‧ pedal

201‧‧‧Back extension rod

20E‧‧‧first link

20F‧‧‧second link

21‧‧‧ Front support

22‧‧‧Back support

30‧‧‧ pivot assembly

30A‧‧‧Sliding section

31‧‧‧ front sliding sleeve

311‧‧‧First Front Office

312‧‧‧Second Front Bearing Department

321‧‧‧First After the Department

322‧‧‧Second Rear Bearing Department

32‧‧‧After slip sleeve

33‧‧‧First member

34‧‧‧Second bars

91‧‧‧Users

L1‧‧‧ front arc movement track

L2‧‧‧After arc movement track

IC‧‧‧ Instant Rotation Center

G‧‧‧ center of gravity

P1‧‧‧ sitting position

P2‧‧‧ reclining position

P3‧‧‧ Approximate flat position

A, B, C, D‧‧‧ pivot points

θ A‧‧‧ front stagger angle

θ B‧‧‧post stagger angle

The first figure is a schematic diagram of the seat mechanism of the present invention in a fixed position in a sitting position.

The second figure is a schematic view of the seat mechanism of the present invention in a fixed position in a reclined position.

The third picture is the front view of the first figure

The fourth picture is a top view of the first figure

Figure 5A is a schematic view of the sliding sleeve before the present invention

Figure 5B is a schematic view of the sliding sleeve after the present invention

The fifth C diagram is a schematic diagram of the correspondence between the fifth A and the fifth B

The fifth D diagram is a schematic diagram of another application example of the sliding sleeve of the present invention.

Figure 6 is a schematic view of the ride mechanism of the present invention in a movable position in a reclined position.

Figure 7 is a schematic view of the ride mechanism of the present invention in a movable position in an approximately lying position.

The eighth picture is a perspective view of the seventh figure

Referring to the first, second, third and fourth figures, the present invention is a wheelchair device that can be tilted and tilted, and includes: A pair of bottom frame assemblies 10, each of which includes a bottom frame body 11, a front wheel 12 and a rear wheel 13; the bottom frame body 11 has a front wheel pivoting portion 111 and a rear wheel pivoting portion 112. A first pivoting portion 113, a second pivoting portion 114, a third pivoting portion 115, and a fourth pivoting portion 116; the front and rear wheels 12 and 13 are respectively pivoted before the front The rear wheel pivoting portions 111 and 112; a ride mechanism 20 having a front support portion 21 and a rear support portion 22; the ride mechanism 20 is pivotally disposed between the pair of bottom frame assemblies 10 and Rotating; a pair of pivoting assemblies 30 are respectively disposed between the pair of bottom frame assemblies 10 and the riding mechanism 20; each pivoting assembly 30 includes: a front sliding sleeve 31 pivotally mounted on the front support A rear sliding sleeve 32 is pivotally disposed on the rear support portion 22; a pair of first rod members 33, one ends of the first rod members 33 are respectively pivotally disposed on the first and second pivots And the pair of first rods 33 are sleeved on the front sliding sleeve 31 and movable relative to the front sliding sleeve 31; a pair of second rods 34, the two second rods 34 One end of the system The fourth pivoting portion 115 and 116; and the pair of second rods 34 are sleeved on the rear sliding sleeve 32 and movable relative to the rear sliding sleeve 34; thereby, the riding mechanism 20 is used for carrying When a user 91 (see the sixth figure) and constitutes the assembly, the center of gravity has a center of gravity G, and when the ride mechanism 20 and the pair of pivotal assemblies 30 are rotated and tilted, the front support portion 21 generates a front circle. The arc moves the trajectory L1, and the rear support portion 22 generates a rear circular arc moving trajectory L2, and the front circular arc moving trajectory L1 and the rear circular arc moving trajectory L2 form an instantaneous rotation center IC (Instantanrous center). Rotating center IC and The distance of the center of gravity G is less than 5 cm.

In practice, the ride mechanism 20 has a pair of push handles 20A, a backrest 20B, a seat 20C, and a pedal 20D.

When the seat mechanism 20 is of a fixed structure, the backrest 20B, the seat 20C and the pedal 20D are fixed to each other and are not movable.

Referring to the sixth and seventh figures, when the seat mechanism 20 is of a movable structure, the backrest 20B, the seat 20C and the pedal 20D are pivotally coupled to each other to be relatively movable.

The backrest 20B extends downwardly from a pair of back extension rods 201.

And the ride mechanism 20 further includes: A pair of first links 20E are pivotally connected between the corresponding back extension rods 201 and the pedals 20D.

a pair of second links 20F, one end of which is pivotally connected to the corresponding pedal 20D and the first link 20E, and the other end is pivotally connected to the corresponding bottom frame 11 (for example, pivoted to the front) The support portion 21 is either the front sliding sleeve 31).

The front support portion 21 is adjacent to the seat 20C.

The rear support portion 22 is adjacent to the backrest 20B.

The front sliding sleeve 31 has a first front bearing portion 311 and a second front bearing portion 312 with a front stagger angle θ A (as shown in FIG. 5A); the two first rod members 33 One of the first rods 33 is pivotally disposed at one end of the first pivoting portion 113 and is disposed at one end of the first rod member 33. The second pivoting portion 114 is sleeved on the two front mounting portions 312; thereby, when the front supporting portion 21 generates the front circular arc moving locus L1, the pair The first rods 33 are respectively moved in the first and second front mounting portions 311 and 312 and are opposite to the front sliding sleeve 31.

The rear sliding sleeve 32 has a first rear bearing portion 321 and a second rear bearing portion 322 with a rear stagger angle θ B therebetween (as shown in FIG. 5B); the two second rod members 34 One of the two second rods 34 is pivoted at one end and is pivotally disposed at the third pivoting portion 115. The second pivoting portion 116 is sleeved on the two rear mounting portions 322; thereby, when the rear supporting portion 22 generates the rear circular arc moving locus L2, the pair of second rod members 34 are respectively The first and second rear mounting portions 321 and 322 move relative to the rear sliding sleeve 32.

Further, the first front bearing portion 311, the first rear bearing portion 312, the second front bearing portion 321 and the second rear bearing portion 322 can each be provided with a sliding portion 30A. For the ball slide (refer to Figures 5A and 5B) or the roller slide (refer to Figure 5C), the smooth movement of the first and second members 33 and 34 can be improved. .

The front sliding sleeve 31 (the rear sliding sleeve 32 can also be designed in this way) can be a generally C-shaped opening structure and can be moved relative to the first pivoting portion 113 to make the front sliding sleeve 31 (or the rear) The sliding sleeve 32) is slidable relative to one end of the pair of first rod members 33 (or the pair of second rod members 34) to the other end.

The seating mechanism 20 can be configured in both fixed and movable configurations, so that the present invention has the following two application examples:

[a] Sitting-sloping: Referring to the first and second figures, the riding mechanism 20 is on the bottom frame assembly 10, with the front sliding sleeve 31 and the rear sliding sleeve 32 as supporting points, in a sitting position. P1 and one The movement between the reclining positions P2 is as follows: the one end of the two first rods 33 is rotated by the first and the second pivoting portions 113 and 114 respectively → the two first The rods 33 slide relative to the first and second front receiving portions 311 and 312, respectively.

One ends of the two second rods 34 are pivoted by the third and fourth pivoting portions 115 and 116 respectively. The two second rods 34 are respectively associated with the first and second rear bearing portions 321 Sliding relative to 322.

The front and rear support portions 21 and 22 respectively generate the front and rear circular arc movement loci L1 and L2, and the front circular arc movement locus L1 and the rear circular arc movement locus L2 form the instantaneous rotation center IC. Achieve labor saving to promote the rider 20.

[b] Sitting-approximately lying flat: Referring to the sixth and seventh figures, the riding mechanism 20 is on the bottom frame assembly 10, with the front sliding sleeve 31 and the rear sliding sleeve 32 as supporting points. The position P1 is changed between an approximate flat position P3; the action in the changing process is as follows: one end of the two first rods 33 is rotated by the first and second pivoting portions 113 and 114, respectively. The two first rods 33 slide relative to the first and second front mounting portions 311 and 312, respectively.

One ends of the two second rods 34 are pivoted by the third and fourth pivoting portions 115 and 116 respectively. The two second rods 34 are respectively associated with the first and second rear bearing portions 321 Sliding relative to 322.

Between the backrest 20B, the seat 20C, the pedal 20D and the second link 20F, there are four pivot points A, B, C, and D, which can move relative to each other in a diamond-shaped four-link to achieve the ride. The mechanism 20 changes from the sitting position P1 to the approximate lying position P3 (see the eighth figure).

The front and rear support portions 21 and 22 respectively generate the front and rear circular arc movement loci L1 and L2, and the front circular arc movement locus L1 and the rear circular arc movement locus L2 form the instantaneous rotation center IC. It is labor-saving to promote the ride mechanism 20.

The advantages and functions of the present invention are as follows:

[1] The wheelchair device can save labor and tilt. The invention provides a pivoting assembly between the bottom frame assembly and the riding mechanism, and the front and rear supporting portions of the riding mechanism and the pivoting assembly are pivotally connected to each other. According to this, the front support portion generates a front circular arc moving trajectory, and the rear support portion generates a rear circular arc moving trajectory, and the front and rear circular arc moving trajectories form a momentary rotation center, and the riding mechanism carries the user and constitutes the combined body. The system has a center of gravity, and the distance between the instantaneous center of rotation and the center of gravity is less than 5 cm. Therefore, the wheelchair device can be labor-saving to tilt.

[2] The mechanical structure also achieves a labor-saving effect. The invention utilizes the principle of instantaneous rotation center to achieve the labor-saving driving effect, and the whole mechanism does not need to use electric power assistance. The problem of labor-saving rotation cannot be achieved when there is no power (or no power) at all. Therefore, the mechanical structure also achieves a labor-saving effect.

The present invention has been described in detail with reference to the preferred embodiments of the present invention, without departing from the spirit and scope of the invention.

10‧‧‧Bottom frame assembly

11‧‧‧ bottom frame

111‧‧‧Front wheel pivoting department

112‧‧‧ Rear Wheels Department

113‧‧‧First pivotal

114‧‧‧Second pivotal

115‧‧‧The third pivotal

116‧‧‧fourth pivotal

12‧‧‧ front wheel

13‧‧‧ Rear wheel

20‧‧‧ rides

20A‧‧‧ push

20B‧‧‧ backrest

20C‧‧‧ seats

20D‧‧‧ pedal

21‧‧‧ Front support

22‧‧‧Back support

31‧‧‧ front sliding sleeve

32‧‧‧After slip sleeve

33‧‧‧First member

34‧‧‧Second bars

IC‧‧‧ Instant Rotation Center

G‧‧‧ center of gravity

P1‧‧‧ sitting position

Claims (9)

A wheelchair device capable of tilting and tilting, comprising: a pair of bottom frame assemblies, each bottom frame assembly comprising a bottom frame body, a front wheel and a rear wheel; the bottom frame body has a front wheel pivoting portion, a rear wheel pivoting portion, a first pivoting portion, a second pivoting portion, a third pivoting portion and a fourth pivoting portion; the front and rear wheel trains are respectively pivoted at the front and the rear a pivoting portion; a ride mechanism having a front support portion and a rear support portion; the ride mechanism is pivotally disposed between the pair of bottom frame assemblies and relatively rotatable; a pair of pivotal components are respectively provided The pivoting sleeve is pivotally disposed on the front support portion; a rear sliding sleeve is pivotally disposed on the rear support portion; a pair of first rod members, one end of the two first rod members are respectively pivoted on the first and second pivoting portions; and the pair of first rod members are sleeved on the front sliding sleeve, and Moving relative to the front sliding sleeve; a pair of second rod members, one end of the two second rod members being pivoted to the third and fourth pivoting portions respectively; and the pair of The rod sleeve is sleeved on the rear sliding sleeve and is movable relative to the rear sliding sleeve; thereby, the riding mechanism is configured to carry a user and constitute a combination body, and has a center of gravity, and when the riding mechanism is When the pair of pivotal components are rotated and tilted, the front support portion generates a front circular arc moving track, and the rear support portion generates a rear circular arc moving track, and the front circular moving track and the rear circular moving track Forming a momentary center of rotation, the momentary turn The distance between the center and the center of gravity is less than 5 cm. The wheelchair device of claim 1, wherein the front support portion is adjacent to the seat. The wheelchair device of claim 2, wherein the front sliding sleeve has a first front bearing portion and a second front bearing portion with a front stagger angle therebetween; One of the two first rods is pivotally disposed at the first pivoting portion and is sleeved on the first front bearing portion; the other of the two first members is one end The first pivoting portion is pivoted on the second pivoting portion and is sleeved on the two front mounting portions; thereby, when the front supporting portion generates the front circular arc moving track, the pair of first members are respectively at the first The second front mounting portion moves relative to the front sliding sleeve. The wheelchair device of claim 3, wherein the rear support portion is adjacent to the backrest. The wheelchair device of claim 4, wherein the rear sliding sleeve has a first rear bearing portion and a second rear bearing portion with a rear stagger angle therebetween; One of the two second rods is pivoted at one end to the third pivoting portion and sleeved to the second front bearing portion; the other of the two second members is one end The second pivoting portion is pivoted on the second pivoting portion and is sleeved on the two rear receiving portions; thereby, when the rear supporting portion generates the rear circular arc moving track, the pair of second rods are respectively at the first The second rear mounting portion moves relative to the rear sliding sleeve. The wheelchair device capable of turning and tilting as described in claim 5, wherein: The ride mechanism has a pair of push handles, a backrest, a seat and a pedal, which are fixed to each other; the ride mechanism is a fixed structure. The wheelchair device of claim 6, wherein the ride mechanism is switchable between a sitting position and a recline position. The wheelchair device capable of turning and tilting according to claim 5, wherein the riding mechanism has a pair of push handles, a backrest, a seat, a pedal, a pair of first links and a pair a second link, the components are pivotally connected to each other; the backrest extends downwardly to a pair of back extension rods; the pair of first links are pivotally connected between the corresponding back extension rods and the pedals; One end of the second connecting rod is pivotally connected to the corresponding pedal and the first connecting rod, and the other end is pivotally connected to the corresponding bottom frame; the riding mechanism is a pivotal structure. The wheelchair device capable of tilting and tilting as described in claim 8 wherein the ride mechanism is changeable between a sitting position and an approximate lying position.