JP2007089613A - Standing up assistance device and standing up assistance chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a standing up assistance device and a chair using thereof which has a simple structure to be easy to handle and can be used safely. <P>SOLUTION: In the chair 9a, the standing up assistance device 1a is interposed between a leg part 12 composed of casters 10 and supports 11 and a seat part 13 to which a backrest 15 is fitted by a frame 14. The standing up assistance device 1a is provided with: an upper face plate 2 and a base bottom plate 3 composed of a flat plate of a U-shaped cross section; an engaging means 4 turnably pivoted by the rear part of the side faces 2b of the upper face plate in a rotatable manner; and a stopping device 5 installed at the flat face 3a of the base bottom plate so as to project partially from the rear end of the base bottom plate 3. The front parts of the side faces 2b of the upper face plate are fitted in an inclinable manner to a shaft 6 installed at the front parts of the side faces 3b of the base bottom plate, and notches 7 and a projecting part 8 are respectively provided at the side faces 3b of the base bottom plate and the stopping device 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a device for assisting an elderly person, a handicapped person, a pregnant woman or an obese person when standing up from a chair, and a chair provided with the apparatus, and particularly, it is simple in structure and easy to handle and is used safely. The present invention relates to a standing support device and a chair provided with the same.

  The action of standing up from a chair for an elderly person or a handicapped person is extremely hard work because an excessive load is applied to the lower limbs. Therefore, in order to deal with such problems, various inventions and devices have been conventionally made regarding devices and chairs that assist the operation of getting up from a chair.

  For example, Patent Document 1 discloses an invention related to a stand-up auxiliary chair, which is called “stand-up assist chair”, and assists the operation by pushing up the seat when a person with reduced physical strength tries to stand up from the chair. Yes.

Hereinafter, the invention disclosed in Patent Document 1 will be described with reference to FIG.
FIG. 5 is a right side view of a stand-up auxiliary chair according to the prior art.
As shown in FIG. 5, the auxiliary assisting chair 51 according to the prior art is composed of a leg part 52 composed of four wooden legs 57 and 58, and an armrest 55 bolted to the upper end part of the leg part 52. , A seat portion 53 having a push-up plate 62 attached to the lower surface, and a backrest portion 54 comprising a back plate 61 and a back cushion 60, and a push-up spring 66 and a gas cylinder (not shown) are provided below the seat portion 53. A seat push-up mechanism 56 is installed, and an operation portion 63 and an operation piece 64 are attached to the distal end side of the armrest 55.
In the “stand-up auxiliary chair” having the above-described structure, when the user stands up and presses down the operation piece 64 disposed on the upper surface portion 65 of the armrest 55, the push-up spring 66 pushes up the rear end portion 59 of the seat portion 53. The gas cylinder acts to keep the pushing speed of the pushing spring 66 low. Therefore, the user can perform the rising operation safely and easily.

Patent Document 2 discloses an invention relating to a chair that can be easily seated and stood under the name of “chair with seating and standing assistance device” without applying a weight load to the lower limbs. .
The invention disclosed in Patent Document 2 includes a pair of left and right legs including a front leg and a rear leg, a seat receiving frame supported horizontally by the legs, and brackets provided on both left and right sides of the seat receiving frame. A seat on which the front support piece and the rear support piece are vertically suspended on the left and right sides of the back surface, a pair of left and right link members formed by crossing the long and short rods in an X shape via the connection rods, and a connection rod And a spring member that is mounted between the rear end portions of the seat receiving frame so as to be freely adjustable. Then, the upper and lower ends of the long rod are pivotally supported by the front portion of the bracket and the rear support piece of the lower surface of the seat, respectively, and the upper and lower ends of the short rod are inserted into the long holes provided in the front support piece and the bracket of the lower surface of the seat. The seat is configured to be forwardly tilted and horizontally positioned in an unloaded state and a loaded state by urging of a spring member.
In the "seat with a seating and standing support device" having the above structure, the spring member is extended and the link member gradually becomes horizontal by sitting on the forward tilted seat and applying weight, so it is easy to sit down. Can do. In addition, when standing up from the seated state, the weight applied to the seat is reduced, so that the extended spring member contracts and the link member stands up from the horizontal state, so that the seat gradually tilts forward. Can stand up comfortably.

Furthermore, Patent Document 3 is named “Standing Aid Chair” and can be used easily and safely by elderly people and people with disabilities who have weak muscles in the lower limbs. A device relating to a standing support chair is disclosed.
The “stand-up auxiliary chair” disclosed in Patent Document 3 has a seat frame body that is held by four pedestals having four corners on the lower surface and casters with brakes at the lower end, and a front edge portion in the seat frame body. A seat flange plate pivotally supported on the front edge of the spring pressure adjustment mechanism provided, a coil spring provided in the spring pressure adjustment mechanism, and a member provided on the seat frame and detachably engaged with the seat flange plate. And a back extension portion of the armrest rod provided on the left and right sides of the seat frame body.
In the “stand-up auxiliary chair” having the above structure, when holding the armrest with the left and right hands and sitting on the seat plate or the seat, the seat plate that pivots downward and contacts the upper surface of the seat frame body is provided. Since it is fixed by the locking device, the seated person can easily sit on the chair. Also, when standing up from the chair, the lever of the locking device is operated to release the engagement, and when you hold the left and right armrests with your hand and lift your hips, the rebounding force of the spring will turn the seat plate upward Therefore, the user can stand up easily without placing a burden on the knees or waist.
JP-A-11-290386 JP 7-88135 A Japanese Utility Model Publication No. 7-9327

  However, in the inventions and devices disclosed in Patent Documents 1 to 3 which are the above-described prior arts, since the structure is complicated with a spring and a gas cylinder, the chair becomes heavy and difficult to carry, and the manufacturing cost is low. There was a problem of becoming higher. Further, when the user is not seated, the seat portion is inclined, so that there is a problem that it is difficult to carry and store because the seat portion becomes an obstacle.

  The present invention has been made in response to such a conventional situation, and an object thereof is to provide a stand-up assisting device that is simple in structure and easy to handle, and that can be used safely, and a chair including the same.

In order to achieve the above object, a stand-up assisting device according to the first aspect of the present invention is a stand-up assisting device interposed between a seat part and a leg part of a chair, and a base attached substantially horizontally to the upper end of the leg part. A plate and an upper surface plate mounted substantially horizontally on the lower surface of the seat portion are provided, and the upper surface plate is pivotally supported by the base plate so as to be tiltable.
In the stand-up assisting device having such a structure, the seat portion tilts integrally with the upper surface plate by moving the weight of the user when attached to the chair. Accordingly, the seat portion is inclined so that the front is low and the rear is high.

According to a second aspect of the present invention, in the stand-up assisting device according to the first aspect, the base plate includes an extending portion extending in front of the upper surface plate, and the upper surface plate is tilted at a desired angle with respect to the base plate. In this case, the front end is in contact with the extended portion.
The stand-up assisting device having such a structure has an effect that the seat does not tilt more than a desired angle when attached to a chair.

According to a third aspect of the present invention, in the stand-up assisting device according to the first aspect, the upper surface plate is provided with a hooking means for hooking a stopper installed on the base plate when the upper surface plate is tilted at a desired angle with respect to the base plate. It is characterized by comprising.
In the stand-up assisting device having such a structure, when attached to a chair, the stopper and the latching means act so as not to incline the seat portion beyond a desired angle.

According to a fourth aspect of the present invention, in the stand-up assisting device according to any one of the first to third aspects, a holding means for holding the position of the upper surface plate tilted by a desired angle with respect to the base plate is provided. It is characterized by.
In the stand-up assisting device having such a structure, when attached to the chair, the holding means acts so as to hold the inclined state of the seat portion.

A standing assistance chair according to a fifth aspect of the present invention is characterized by including the standing assistance device according to any one of the first to fourth aspects.
The standing auxiliary chair having such a structure has the same operation as that of the invention described in any one of claims 1 to 4.

  As described above, in the standing assistance device according to the first aspect of the present invention, the user can easily stand up. Further, since the inclination angle of the seat is adjusted by the user's weight shift, the operation is easy. Furthermore, the structure is simple, and it can be easily attached to an existing chair and can be manufactured at low cost. And since it is light, it is easy to carry.

  In the standing assistance device according to the second aspect of the present invention, when the seat is attached to the chair, the seat portion does not tilt more than a desired angle, so that the user does not accidentally fall off the chair and is safe.

  In the standing assistance apparatus according to claim 3 of the present invention, the same effect as that of the invention described in claim 2 is obtained.

  In the standing assistance device according to the fourth aspect of the present invention, when attached to a chair, the inclined seat portion does not inadvertently tilt and return to a horizontal state, which is safe. Moreover, since the inclination of the seat portion can be performed little by little in several stages, the operation is easy even when the user is powerless.

  In the standing assistance apparatus according to claim 5 of the present invention, the same effects as those of the invention described in any one of claims 1 to 4 are achieved.

  Hereinafter, examples of the standing assistance device and the standing assistance chair according to the best mode of the present invention will be described.

The first embodiment will be described with reference to FIGS. 1 and 2 (particularly corresponding to claims 1, 3 and 5).
Fig.1 (a) is a perspective view of Example 1 of the standing assistance apparatus which concerns on embodiment of this invention, (b) and (c) are side views of the standing assistance apparatus of Example 1. FIG.
As shown in FIG. 1A, the standing assisting device 1a of the present embodiment includes an upper surface plate 2 and a base plate 3 made of a U-shaped flat plate, and an end portion 4b at the rear portion of the upper surface plate side surface 2b, A latching means 4 on which 4b is pivotally supported and a stopper 5 installed on the base plate plane 3a so as to partially protrude from the rear end of the base plate 3 are provided. The front portion of the top plate side surface 2b is rotatably attached to a shaft 6 installed at the front portion of the base plate side surface 3b, and the base plate side surface 3b has a half diameter larger than that of the end portion 4b of the latching means 4. A circular notch 7 is provided, the stopper 5 has a slide part 8a on which the latching part 4a of the latching means 4 slides, and a protrusion on which the latching part 4a can be latched at the front part of the slide part 8a. A part 8 is provided.

  In the standing assist device 1a having such a structure, when the angle formed by the base plate plane 3a and the upper plate plane 2a is 0 degree (hereinafter referred to as a state in which the upper plate 2 is closed), it is shown in FIG. Thus, the end portions 4b and 4b of the latching means 4 are fitted into the notch portion 7 of the base plate side surface 3b, and the latching portion 4a is located at the end of the slide portion 8a of the stopper 5. The top plate plane 2a is substantially parallel to the base plate plane 3a. Then, when the upper surface plate 2 is gradually opened from the closed state in the direction indicated by the direction A, the latching portion 4a slides in the direction indicated by the direction B in the upper surface of the slide portion 8a of the stopper 5, and eventually, FIG. As shown to 1 (c), it latches on the protrusion part 8 of the fastener 5. FIG. Therefore, the upper surface plate 2 does not tilt beyond a predetermined angle.

Next, the chair provided with the standing assistance apparatus 1a is demonstrated using FIG.
FIGS. 2A and 2B are side views of a chair provided with the standing assistance device of the first embodiment. The same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In the following description, it is assumed that the chair 9a is installed and used on a substantially horizontal floor.
As shown in FIG. 2 (a), the chair 9a provided with the standing assistance device 1a includes a leg portion 12 including a caster 10 and a column 11, and a seat installed on the upper portion of the leg portion 12 through the standing assistance device 1a. It comprises a portion 13 and a backrest 15 attached to the seat portion 13 by a frame 14. A base plate plane 3 a is attached substantially horizontally to the upper end of the leg portion 12, and an upper plate plane 2 a is attached substantially horizontally to the lower surface of the seat portion 13. Therefore, in a normal use state, the seat portion 13 is substantially horizontal.
On the other hand, when the user sitting on the chair 9a leans forward and puts his weight on the front end of the seat 13 in the direction indicated by the direction C, the seat 13 is integrated with the top plate 2 and the shaft 6 Is tilted in the direction indicated by the direction A.
As the seat portion 13 tilts, the latching portion 4a of the latching means 4 slides in the direction indicated by the direction B on the upper surface of the slide portion 8a of the stopper 5, but eventually, as shown in FIG. It hooks on the protrusion 8 of the stopper 5. Thereby, tilting of the seat part 13 stops. After the user stands up, the latching portion 4a slides on the slide portion 8a of the fastener 5 in the direction opposite to the direction of the arrow B by the weight of the seat portion 13 and the backrest 15 as shown in FIG. ).

  As described above, in the standing assist device 1a of this embodiment and the chair 9a including the standing assist device 1a, the seat 13 is inclined so as to lower the front and raise the rear, so that the user's standing motion is assisted. Is done. Further, the seat 13 is easily tilted by the user's weight shift, and the tilt angle can be adjusted by the user's weight shift, so that the operability is good. Furthermore, since the seat part 13 does not incline more than a desired angle, there is a low risk that the user will accidentally fall off the chair 9a. And since it is a lightweight structure, carrying and storing are easy. Moreover, since it is a simple structure and can be easily attached to an existing chair, the manufacturing cost can be reduced.

In this embodiment, the latching means 4 and the shaft 6 have a solid structure, but may have a hollow structure. Further, the number of the hooking means 4 and the stoppers 5 is not limited to one and may be two or more. Furthermore, it is desirable to appropriately adjust the latching position of the latching portion 4a and the protruding portion 8 so that the maximum value of the angle formed with the base plate 3 after the upper surface plate 2 is opened becomes a desired value.
Further, by forming the notch portion 7 shallowly or not providing the notch portion 7 itself, the upper surface plate 2 and the base plate 3 are within a range of 5 to 15 degrees while the user is seated. You may make it make an angle. In this case, since the seat portion 13 is inclined forward in advance while the user is seated, the seat portion 13 can be tilted more easily due to weight shift. When the angle is smaller than 5 degrees, the effect of facilitating the tilting of the seat portion 13 is small. When the angle is larger than 15 degrees, the seated user is always present. There is a risk that the user may feel an inclination and become uneasy or may gradually fall off the seat 13 while sitting.
Further, when the stopper 5 is installed on the base plate upper surface 3 a, a part of the stopper 5 may not be protruded from the rear end of the base plate 3. In this case, since the strength of the stopper 5 is increased by the base plate 3, the stopper 5 is not deformed even when the weight of the user is applied to the slide portion 8 a via the latching means 4.

Example 2 will be described with reference to FIG. 3 (corresponding to claim 4 in particular).
3A is a perspective view of Example 2 of the stand-up assisting apparatus according to the embodiment of the present invention, FIG. 3B is an enlarged view of the protrusion, and FIG. 3C is the stand-up assisting apparatus of Example 2. It is a side view of the chair provided with. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 3A, in the standing assistance device 1b according to the present embodiment, a lever 16 extends from the latching portion 4a of the latching means 4 in the standing assistance device 1a according to the first embodiment. The projection portion 17 having the inclined surface 17a and the concave standing surface 17b is provided. The base plate side surface 3b is provided with a notch 7a so as not to interfere with the lever 16.
The movement state of the latching means 4 accompanying the tilting of the upper surface plate 2 will be described in detail with reference to FIG. In addition, in order to distinguish the latching means 4 located in the both sides of the projection part 17, it shall represent as the latching means 4x and the latching means 4y, respectively. When the top plate 2 is tilted in the opening direction, the latching means 4x is pulled in the direction indicated by the direction B as a whole, as shown in FIG. Thereby, the latching means 4x can easily get over by sliding in the direction indicated by the direction D while the latching portion 4a is in contact with the inclined surface 17a. And it gets over the projection part 17 and will be in the state of the latching means 4y.
On the other hand, when the upper plate 2 is tilted in the closing direction, a force opposite to the direction B is applied to the hooking means 4y. However, in the latching means 4y, the latching portion 4a is engaged with the upright surface 17b and cannot move in the direction opposite to the direction B, so that the top plate 2 is prevented from tilting in the closing direction. That is, the protrusion 17 acts as a holding unit that holds the position of the top plate 2.
When the lever 16 is pulled up in the direction indicated by the direction E, the latching portion 4a of the latching means 4y can be prevented from being engaged with the concave surface 17b. Thereby, it is possible to release the holding operation by the protrusion 17 and to tilt the top plate 2 in the closing direction.
As shown in FIG. 3C, the chair 9 b provided with the standing assistance device 1 b has a structure in which the standing assistance device 1 b is interposed between the leg portion 12 and the seat portion 13. In a normal use state, the seat portion 13 is substantially horizontal. However, when the user sitting on the chair 9b takes a forward leaning posture and puts his / her weight in the direction indicated by the direction C on the front end of the seat portion 13, the seat portion 13 is placed. Is tilted integrally with the top plate 2 in the direction indicated by the direction A about the shaft 6.
As the seat portion 13 is tilted, the lower end portion of the latching means 4 sequentially passes over the protrusions 17 and the latching means 4 moves as a whole in the direction indicated by the direction B. However, the latching means 4 has a structure that cannot move in the direction opposite to the direction B when the latching portion 4a is engaged with the vertical surface 17b of the projection portion 17.
In the chair 9b provided with the standing assist device 1b having such a structure, the tilted state of the seat 13 after tilting has an action of being held in several stages.

  As described above, in the standing assistance device 1b of this embodiment and the chair 9b including the standing assistance device 1b, the seat portion 13 tilted during the user's standing up operation does not inadvertently tilt and returns to the horizontal state. In the unlikely event that the user cannot stand up and puts weight on the seat again, it is safe. Moreover, since the seat part 13 can be inclined little by little in steps, even a powerless user can easily operate it.

  The number of protrusions 17 is not limited to two, and can be changed as appropriate. Further, the shape of the rising surface 17b of the projection 17 that engages with the lower end portion of the latching means 4 is not limited to a concave shape, and is a shape that suppresses the sliding of the latching part 4a of the latching means 4. For example, it may be a surface formed with minute irregularities so as to increase friction or a surface formed in a bowl shape.

Example 3 will be described with reference to FIG. 4 (particularly corresponding to claim 2).
4 (a) and 4 (b) are side views of a chair provided with Example 3 of the standing assistance device according to the embodiment of the present invention. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 4, the standing assist device 1 c according to the present embodiment is different from the standing assist device 1 a according to the first embodiment in that an extending portion 18 is provided at the front end of the base plate 2 instead of the hooking means 4 and the fastener 5. It is to be prepared. Further, locking metal fittings 19 and 19 are pivotally supported on both sides of the rear portion of the top plate side surface 2b, and pins 20 and 20 are respectively attached to both sides of the rear portion of the base plate side surface 3b.
In the standing assist device 1c having such a structure, when the upper surface plate 2 is tilted in the opening direction, the front end portion of the upper surface plate 2 comes into contact with the extending portion 18 of the base plate 3 in due course. Therefore, the upper surface plate 2 does not rotate more than a predetermined angle. Further, the closed state of the upper surface plate 2 is maintained by locking the locking metal fitting 19 to the pin 20.
As shown in FIG. 4C, the chair 9 c provided with the standing assist device 1 c has a structure in which the standing assist device 1 c is interposed between the leg portion 12 and the seat portion 13.
In the chair 9c provided with the standing assist device 1c having such a structure, when the user sitting on the chair 9c is leaning forward and puts his / her weight in the direction indicated by the direction C on the front end of the seat 13, 13 is integrated with the upper surface plate 2 and tilts in the direction indicated by the direction A about the shaft 6. Then, when the front end of the base plate 3 comes into contact with the extending portion 18 of the upper surface plate 2, the tilting of the seat portion 13 stops. Moreover, if the locking metal fitting 19 is locked to the pin 20, the seat portion 13 is maintained in a horizontal state.
In this embodiment, the extending portion 18 is provided on the base plate 3 and the front end portion of the upper surface plate 2 is brought into contact with the extending portion 18 to suppress the tilting. The extending portion may be formed so as not to interfere with the base plate side surface 3b from the portion, and the end of the extended portion may be brought into contact with the base plate plane 3a to suppress tilting.

  As described above, the standing assistance device 1c of this embodiment and the chair 9c including the same can achieve the same effects as those of the first embodiment with a simpler structure than that of the first embodiment. Further, since the seat 13 can be prevented from inadvertently inclining by the locking metal 19 and the pin 20, it can be safely carried.

  The chair provided with the standing assistance apparatus of this invention is not limited to this Embodiment, A various deformation | transformation is possible. For example, a structure with arm rests may be used, or a structure with four legs instead of one support column and a plurality of casters may be used. Moreover, it can also be set as the structure without a backrest. Furthermore, it is also possible to use a seat with a seat on the top plate directly attached to the seat of the wheelchair.

  As described above, the inventions described in claims 1 to 5 can be applied to an apparatus or a chair that assists an elderly person, a disabled person, a pregnant woman, or an obese person get up from the chair.

(A) is a perspective view of Example 1 of the standing assistance device according to the embodiment of the present invention, and (b) and (c) are side views of the standing assistance device of Example 1. FIG. (A) And (b) is a side view of the chair provided with the standing assistance apparatus of Example 1. FIG. (A) is the perspective view of Example 2 of the standing assistance apparatus which concerns on embodiment of this invention, (b) is an enlarged view of a projection part, (c) is provided with the standing assistance apparatus of Example 2. FIG. FIG. (A) And (b) is a side view of the chair provided with Example 3 of the standing assistance apparatus which concerns on embodiment of this invention. It is a right view of the stand-up auxiliary chair which concerns on a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a-1c ... Standing auxiliary device 2 ... Top plate 2a ... Top plate plane 2b ... Top plate side surface 3 ... Base plate 3a ... Base plate plane 3b ... Base plate side surface 4, 4x, 4y ... Latching means 4a ... Latch part 4b ... End 5 ... Stopper 6 ... Shaft 7,7a ... Notch 8 ... Protrusion 8a ... Slide 9a-9c ... Chair 10 ... Caster 11 ... Past 12 ... Leg 13 ... Seat 14 ... Frame 15 ... Back 16 ... Lever 17 ... Projection part 17a ... Inclined surface 17b ... Elevation surface 18 ... Extension part 19 ... Locking bracket 20 ... Pin 51 ... Stand-up auxiliary chair 52 ... Leg part 53 ... Seat part 54 ... Backrest part 55 ... Earrest 56 ... Seat Part push-up mechanism 57, 58 ... Leg 59 ... Rear end 60 ... Back cushion 61 ... Back plate 62 ... Push-up plate 63 ... Operation part 64 ... Operation piece 65 ... Upper face part 66 ... Push-up spring A ~ E ... direction

Claims (5)

  In the standing assistance device interposed between the seat part and the leg part of the chair, the base plate is attached to the upper end of the leg part substantially horizontally, and the upper face plate is attached to the lower surface of the seat part substantially horizontally. The upright support device is characterized in that a front end portion of the upper surface plate is pivotally supported by the base plate so as to tilt.   The base plate includes an extending portion extending in front of the upper surface plate, and the upper end plate abuts on the extended portion when the upper surface plate is tilted at a desired angle with respect to the base plate. The standing assisting device according to claim 1, wherein   The stand-up assisting device according to claim 1, wherein the upper surface plate includes a latching unit that latches a stopper installed on the base plate when the upper surface plate is tilted at a desired angle with respect to the base plate.   The stand-up assisting device according to any one of claims 1 to 3, further comprising holding means for holding the position of the upper surface plate tilted at a desired angle with respect to the base plate.   A stand-up assisting chair comprising the stand-up assisting device according to any one of claims 1 to 4.