TWI818759B - wheelchair - Google Patents

Abstract

A wheelchair is suitable for a user to ride on and for the user to move to a supporting surface. The wheelchair includes a seat unit, a wheel unit, and two armrest units. The seat unit includes a seat surface. The seat surface can be extended in a transverse direction and adapted to a sitting state for the user to sit on, and can be transformed into an inclined state in which the seat surface is extended obliquely. The chair wheel unit is installed at the bottom of the chair base unit. Each armrest unit is pivotally connected to one of the left and right sides of the seat unit. At least one of the armrest units can be pivoted from an upright state in a direction away from the seat surface relative to the seat unit, to a swaying state, and is further adapted to cooperate with the seat surface to support the user. Move to this support surface.

Description

wheelchair

The present invention relates to a care tool suitable for caring for patients or people with mobility impairments, in particular to a wheelchair.

Currently, most existing wheelchairs include a seat unit, a wheel unit installed at the bottom of the seat unit, two armrest units protruding upward from the left and right sides of the seat unit, and an armrest unit extending upward from the left and right sides of the seat unit. The back unit protrudes upward from the rear end of the seat unit.

The seat unit is suitable for one user to sit on. The wheelchair wheel unit allows the wheelchair to move on the ground. The armrest units and the chair back unit are fixed on the seat unit to support and protect the user.

Although this kind of existing wheelchair has been in use for many years, it still has its shortcomings. For example, when the user has almost no ability to move independently, if you want to move the user to a hospital bed or a surgical or examination platform, you usually need to lift the user completely to move to the target location. However, the user must be moved to the target location. Lifting the whole thing requires not only sufficient strength, but also skills and dexterity. Non-professional caregivers may injure themselves or even fall and injure the user due to careless operation, so do not be careless.

The object of the present invention is to provide a wheelchair that improves at least one of the shortcomings of the prior art.

The wheelchair is suitable for a user to ride on, and is suitable for the user to move to a supporting surface. The wheelchair includes a seat unit, a wheel unit, and two armrest units.

The seat unit includes a seat surface. The seat surface can be extended in a transverse direction and adapted to a sitting state for the user to sit on, and can be transformed into an inclined state in which the seat surface is extended obliquely. The chair wheel unit is installed at the bottom of the chair seat unit. Each armrest unit is pivotally connected to one of the left and right sides of the seat unit. At least one of the armrest units can be pivoted from an upright state in a direction away from the seat surface relative to the seat unit, to a swaying state, and is further adapted to cooperate with the seat surface to support the user. Move to this support surface.

The effect of the present invention is that the chair surface and one of the armrest units can be transformed into the tilted state and the swaying state respectively, thereby facilitating the user to lean towards the armrest unit and supporting the user with the armrest unit , thereby facilitating the user to move to the support surface.

Referring to Figures 1 to 3, one embodiment of the wheelchair of the present invention is suitable for a user to ride on and for the user to move to a support surface 1 (see Figure 4). The supporting surface 1 is, for example, the surface of a bed or a hospital bed, or the bearing surface of a stretcher.

This embodiment includes a seat unit 2 suitable for the user to sit on, a seat back unit 3 fixedly connected to the rear end of the seat unit 2, and a wheel unit 4 installed at the bottom of the seat unit 2. And two armrest units 5 respectively pivotally connected to the left and right sides of the seat unit 2.

The seat unit 2 includes a seat frame 21, a plurality of pivot frames 22 arranged on the chair frame 21, a plurality of telescopic groups 23 whose bottoms are respectively pivotally connected to the pivot frames 22, and a plurality of telescopic groups 23 arranged on the seat frame 21. The elastic member 24 between the pivot frame 22 and the telescopic groups 23, and a riding group 25 arranged on the telescopic groups 23.

The chair seat frame 21 includes two base rods 211 spaced left and right and extending front and back, a base plate 212 in the shape of a rectangular plate and erected on the base rods 211, and four straight rods extending upward from the base plate 212. Seat post 213, four top seat posts 214 arranged at the top of the straight seat posts 213 and arranged in a square ring shape, and two top seat posts 214 extending from the front and back respectively, and two of the top seat posts 214 are inclined forward and downward. Extended foot lever 215. Among them, due to the viewing angle, one of the straight seat posts 213 and one of the top seat posts 214 are blocked by the ride group 25, so only three of them are shown in FIG. 1 .

The pivot frames 22 are used for respectively disposing the telescopic groups 23 on the chair seat frame 21 . Each pivot frame 22 includes a bottom wall 221 fixed on the base plate 212 , and two side wall portions 222 respectively extending upward from the front and rear ends of the bottom wall 221 . The bottom wall portion 221 of each pivot frame 22 cooperates with the side wall portions 222 so that the pivot frame 22 is U-shaped when viewed from the left and right directions.

Each telescopic group 23 is disposed on the base plate 212 of the chair frame 21 by pivoting to a respective pivot frame 22, and includes a bottom pivoting to a respective pivot frame. The telescopic body 231 of the side wall portions 222 of 22, and a telescopic member 232 that can protrude upward or retract downward into the telescopic body 231.

Among them, the telescopic groups 23 are located in the square ring formed by the top rods 214 in the lateral direction. Therefore, when each telescopic member 232 protrudes upward, it is inserted into the square ring formed by the top rods 214. in the square ring.

In this embodiment, each telescopic group 23 is a pneumatic cylinder. Therefore, each telescopic body 231 is a cylinder body of a pneumatic cylinder, and each telescopic member 232 is a (piston) rod of a pneumatic cylinder. In other embodiments of the present invention, each telescopic group 23 can also be a hydraulic cylinder or a telescopic rod group. The hydraulic cylinder can be manual or automatic. The telescopic rod group may include a telescopic rod driven by a motor, or a screw rod that can be driven with a threaded structure and can be driven manually.

In this embodiment, the number of the telescopic groups 23 is four, and they are divided into left and right groups in groups of two. Each group of telescopic groups 23 is located on one of the left and right sides of the base plate 212 of the chair frame 21 . That is to say, two telescopic groups 23 are provided on each side of the left and right sides of the chair seat frame 21 .

In other embodiments of the present invention, the number of telescopic groups 23 can also be six or more. That is to say, more than three telescopic groups 23 can be provided on each side of the left and right sides of the chair seat frame 21 to further increase the carrying capacity and operating load of this embodiment.

Each elastic member 24 is connected between the bottom of the telescopic body 231 of the respective telescopic group 23 and the bottom wall 221 of the pivot frame 22 .

The seating group 25 is pivotally mounted on the top of the telescopic members 232 of the telescopic groups 23 and defines a seat surface 251 located at the top and suitable for the user to sit on. For example, the seat assembly 25 may include a hard seat panel, a soft seat cushion disposed on the seat panel, and a skin or surface covering the seat panel and the seat cushion. Since the structure of the ride group 25 belongs to common knowledge, the illustration is omitted in the figure.

The chair back unit 3 includes two seat back rods 31 spaced left and right respectively fixed on the rear ends of two of the top seat rods 214 extending front and back of the seat unit 2, and a chair back rod 31 extending left and right on the seats. The seat back cloth 32 on the back rod 31. Each chair back rod 31 is generally inverted L shape. Each seat back fabric 32 is adapted to support the user's back.

The chair wheel unit 4 includes four moving wheels 41 . Two of the moving wheels 41 form a group. The moving wheels 41 of each group are pivotally connected to one of the base rods 211 of the chair frame 21 at a distance from each other. The moving wheels 41 are used to cooperate with the present embodiment to move on the ground.

Each of the armrest units 5 includes two pivot rods 51 extending up and down and spaced front and back and pivotally connected to one of the top seat rods 214 extending front and back of the chair frame 21 , and one pivot rod 51 extending front and back and integrally connected to the There are handrails 52 between the top branches of the pivot rods 51, several rollers 53 arranged at intervals up and down and extending front and back and pivotally connected between the pivot rods 51, and one detachably inserted in one of the rear ones. The pivot rod 51 and the latch group 54 of a chair back rod 31 of the chair back unit 3 respectively. Each roller 53 can rotate with its axis extending forward and backward as the axis of rotation.

Referring to Figures 1, 3, and 4, the seat surface 251 of this embodiment can be changed between a sitting state as shown in Figures 1 and 3 and a tilting state as shown in Figure 4, and each armrest of this embodiment Unit 5 can change between an upright state as shown in Figures 1 and 3, and a yaw state as shown in Figure 4. Among them, since the operation modes of the armrest units 5 are the same, only one of them is used as a representative illustration in FIG. 4 .

When the seat surface 251 is in the sitting state and extends laterally, and the armrest units 5 are in the upright state, this embodiment is like a general wheelchair, and can support the user's buttocks with the riding unit 25, and can The armrest units 5 support the user's hands, and the chair back unit 3 can support the user's back.

Taking the user's need to be moved to the right side of the figure onto the support surface 1 as an example, the latch group 54 located on the right side of the figure can be unplugged first, so that the armrest unit 5 located on the right side of the figure can be Pivot in the direction away from the seat surface 251 (that is, to the right in the figure) to change to the yaw state as shown in Figure 4, and first lean against the support surface 1.

Then, the telescopic members 232 located on the left side of the figure can protrude out the corresponding telescopic bodies 231 respectively, so that the entire riding group 25 tilts high to the left and low to the right in the figure, and the seat surface 251 is transformed into The slope of the inclined extension is greater than the inclined state of the riding state. In this way, the user originally located on the seat surface 251 can gradually and naturally lie down on the armrest unit 5 on the right side of the figure during the transformation of the seat surface 251 .

Since the rollers 53 of the armrest unit 5 on the right side of the figure can rotate with their own axis as the rotation axis, a caregiver who cares for the user is supported by the pivot rods 51 and the armrest rod 52 down, and with the rotation of the rollers 53, the user can move laterally to the right along the handrail unit 5 onto the support surface 1 without requiring high professional skills and much strength, that is, the user can move the It is very convenient for the user to move to the hospital bed or stretcher.

Among them, since each telescopic group 23 is pivotally connected to a respective pivot frame 22 and the riding group 25, when each telescopic member 232 protrudes from a respective telescopic body 231, the telescopic group 23 as a whole can be tilted and pivoted relative to the chair seat frame 21, so that the seat surface 251 can smoothly change between the sitting state and the tilted state.

After the user is moved to the support surface 1, the telescopic members 232 can be retracted into the telescopic bodies 231 respectively, so that the seat surface 251 returns to the sitting state, and then the armrest unit 5 is straightened. Return to the upright state and insert the latch set 54, and this embodiment returns to the state of a general wheelchair. When the telescopic members 232 are retracted into the telescopic body 231, the elastic members 24 can assist in pulling the telescopic bodies 231 back toward the pivot frames 22, thereby assisting the telescopic bodies 231. Straighten up.

To sum up, the effect of the wheelchair of the present invention is that the seat surface 251 and the armrest unit 5 can be transformed into the tilted state and the swaying state respectively, so that the user can lean towards the armrest unit 5 and use the The armrest unit 5 supports the user, thereby facilitating the user to move onto the support surface 1 .

The above are only examples of the present invention and cannot be used to limit the patentable scope of the present invention. Simple equivalent changes and modifications based on the patentable scope of the present invention and the patent specification should also be included in the present invention. covered by the patent application.

1: Support surface 2: Seat unit 21:Chair seat frame 211: Base rod 212: Base plate 213: Straight seatpost 214:Seat post 215: Foot lever 22: Pivot frame 221: Bottom wall 222: Side wall part 23: Scaling group 231:Telescopic body 232:Telescopic parts 24: Elastic parts 25:Ride group 251:Seat 3: Seat back unit 31: Chair back rod 32: Chair back cloth 4: Chair wheel unit 41:Moving wheel 5: Armrest unit 51: Pivot rod 52:Handrail 53:Roller 54:Latch set

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view illustrating an embodiment of the wheelchair of the present invention; Figure 2 is a side view illustrating this embodiment; Figure 3 is a front view illustrating a seat surface and one of the armrest units of this embodiment in a riding state and an upright state respectively; and Figure 4 is a front view illustrating that the seat surface and one of the armrest units of this embodiment are in a tilted state and a swaying state respectively.

2: Seat unit

21:Chair seat frame

211: Base rod

212: Base plate

213: Straight seatpost

214:Seat post

215: Foot lever

22: Pivot frame

221: Bottom wall

222: Side wall part

23: Scaling group

231:Telescopic body

232:Telescopic parts

24: Elastic parts

25:Ride group

251:Seat

3: Seat back unit

31: Chair back rod

32: Chair back cloth

4: Chair wheel unit

41:Moving wheel

5: Armrest unit

51: Pivot rod

52:Handrail

53:Roller

54:Latch set

Claims (6)

A wheelchair, suitable for a user to ride on, and suitable for the user to move to a support surface, the wheelchair includes: a seat unit, including a seat surface, the seat surface can extend in a transverse direction and is suitable for The riding state for the user to ride is changed to an inclined and extended tilt state; a wheel unit is installed at the bottom of the seat unit; and two armrest units, each of the armrest units is pivotally connected to the seat. On one of the left and right sides of the unit, at least one of the armrest units can be pivoted from an upright state in a direction away from the seat surface relative to the seat unit, to a swaying state, thereby being suitable for Cooperating with the chair surface to support the user to move to the support surface; wherein, the seat unit includes a chair seat frame, several telescopic groups arranged on the chair seat frame, and a telescopic group arranged on the telescopic groups. Applicable to the riding group for the user to ride on, the telescopic groups are divided into left and right groups in groups, and the telescopic groups of each group are located on one of the left and right sides of the chair seat frame, each of the above-mentioned The telescopic group can change the length to drive the seat surface to change between the riding state and the tilting state. The wheelchair according to claim 1, wherein each of the telescopic groups includes a telescopic body and a telescopic part that can protrude upward or retract downward into the telescopic body, and the riding group is arranged on the telescopic parts. It also includes the seat surface, and can be driven by the telescopic members to change the seat surface between the riding state and the tilting state. The wheelchair as described in claim 2, wherein the seat unit also includes several A pivot frame installed on the chair frame and provided respectively for the telescopic bodies, and a plurality of elastic members connected between the pivot frames and the telescopic bodies of the telescopic groups, each of which is The pivot frame is pivotally connected to each of the telescopic bodies, so that each of the telescopic bodies can pivot left and right relative to the chair seat frame, and each of the elastic members is connected to a respective one of the telescopic bodies. The pivot frame is between the telescopic body and the telescopic body, and is used to assist in pulling back and straightening the telescopic body that is tilted. The wheelchair according to claim 1, wherein each telescopic group is a pneumatic cylinder or a hydraulic cylinder. The wheelchair according to claim 1, wherein each of the armrest units can be changed between the upright state and the swaying state, and includes two arms extending up and down, spaced front and back and pivotally connected to the left and right sides of the chair frame. A pivot rod on one side of the armrest unit, and a plurality of rollers extending forward and backward between the pivot rods. Each of the rollers can rotate with its own axis as the axis of rotation, so as to rotate on each of the armrest units. When in the yaw state, it is convenient for the user to move laterally along the armrest unit. The wheelchair according to claim 5 further includes a chair back unit fixedly arranged at the rear end of the chair seat frame, and each armrest unit further includes a pivot rod detachably inserted at the rear and the chair. Set of pins between back units.

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