JP3192528U - Chair for people with difficulty walking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair for a person having difficulty walking, in which a person having difficulty walking can comfortably sit and move in daily life, particularly in a general residence or a facility. SOLUTION: A chair 1 for a person who has difficulty walking is provided with a seat portion 2 and a backrest 3, and an elevating device for adjusting the height is attached between the lower surface of the seat portion 2 and the pedestal portion 8, and the pedestal portion 8 is provided. A footrest portion 9 formed so as to project at a position corresponding to the front side of the seat portion 2, a pair of direction-changeable casters 10 arranged below the footrest portion 9, and a seat portion 2. A pair of wheels 11 arranged below the position corresponding to the rear side and a wheel stopper mechanism for braking or releasing the rotation of the wheels 11 by operating the operation lever 18 are provided, and the rear upper side of the backrest 3 is provided. A hand-push grip 3a for a caregiver is provided, and the upper side of the seat portion 2 is formed in a cushion structure in which a stored cushion material is covered with a overlay. [Selection diagram] Fig. 1

Description

  The present invention relates to a chair for a person with difficulty in walking, which allows a person with difficulty in walking to sit and move comfortably in daily life.

  In general, elderly people, sick people, or injured people use a wheelchair that can move while sitting. In addition, when a person is in a certain place, such as when eating a meal or gathering, he often sits in a wheelchair.

  Normally used wheelchairs are provided with a seating part and wheels to move a person who has difficulty walking, but the seating part has no cushion and is not suitable for long-time seating. For this reason, when sitting, for example, a cushion such as a cushion is used to reduce fatigue. In order to alleviate such a feeling of fatigue that occurs when the wheelchair is used in a state where the wheelchair is stopped particularly during meals, it is configured in the same manner as a general indoor chair and can be adjusted in height. Chairs are commercially available. However, although these chairs are made movable by providing small casters on the legs, for example, in a general house, they are not barrier-free, so there are steps in various places, and people with difficulty walking are seated In a state, there is a problem that a small caster cannot get over. In addition, when the chair is stopped at a predetermined place, a brake is provided on the caster. However, since the wheel is small, the braking force is small, and the chair can easily move and harm a person with difficulty in walking.

  The problem to be solved by the present invention is to provide a chair for those who have difficulty walking, which can be comfortably seated and moved especially in daily life in ordinary residences and facilities.

  Therefore, the chair for people with difficulty walking according to the present invention has a seat portion and a backrest, and a lifting device for adjusting the height is attached between the lower surface of the seat portion and the pedestal portion, A footrest portion that is formed to project at a position corresponding to the front side of the seat portion, a pair of direction-changeable casters disposed below the footrest portion, and a position corresponding to the rear side of the seat portion And a wheel stopper mechanism that brakes or releases the rotation of the wheel by operating an operation lever. A hand grip for a caregiver is provided on the upper rear side of the backrest. The upper part of the seat portion is formed in a cushion structure in which the stored cushion material is covered with an overhang.

  Moreover, the outer diameter dimension of a pair of wheel arrange | positioned in the back side of the said seat part shall be 10 cm-25 cm.

  Furthermore, the pair of wheels disposed on the rear side of the seat portion may be configured as a spoke wheel type having a spoke, and a stopper member of a wheel stopper mechanism may be engaged with the spoke to be braked.

  The chair for the person with difficulty walking according to the present invention can adjust the height of the seat portion having a cushion structure by the lifting device, so that the seat portion can be adjusted to the height of the table or bed, etc. Because of the structure, you can sit comfortably for a long time, such as when you eat or relax. At this time, since the footrest portion is formed at a position corresponding to the front side of the seat portion, it is possible to place the inconvenient foot of a person who has difficulty walking. In addition, casters that can change direction forward and wheels on the back are provided, so that caregivers can move to various places in the same way as wheelchairs by gripping and operating the handgrip provided behind the backrest. Is possible. Furthermore, since the wheel stopper mechanism is provided, the rotation of the wheel can be braked and stopped safely in the stopped state. Therefore, a person who has difficulty walking can comfortably sit and move in daily life in a general residence or facility.

  In addition, when the outer diameter of the pair of wheels disposed on the rear side of the seat portion is set to 10 cm to 25 cm, the barrier is not made free in a general residence or facility, for example, a step of about 3 cm to 5 cm such as a sill Even if there is, it is possible to get over easily.

  Furthermore, when the pair of wheels is configured as a spoke wheel type, the wheel stopper mechanism can be braked by engaging the stopper member with the spoke. In this way, when engaged with the spoke, the chair is reliably stopped, so that safety can be ensured.

  It is a side view which shows the Example of the chair for persons with difficulty walking concerning this invention.   It is a rear view of the chair shown in FIG.   (A) (B) is explanatory drawing which shows operation | movement of a wheel stopper mechanism.   It is a principal part side view which shows the other Example of the raising / lowering apparatus.

  A chair for a person with difficulty in walking according to the present invention includes a seat portion and a backrest, and an elevating device for adjusting a height is attached between a lower surface of the seat portion and a pedestal portion, and the seat includes the seat. A footrest portion protruding at a position corresponding to the front side of the seat portion, a pair of direction-changeable casters disposed below the footrest portion, and a lower position corresponding to the rear side of the seat portion And a wheel stopper mechanism that brakes or cancels the rotation of the wheel by operating an operation lever, and on the upper rear side of the backrest, a hand grip for a caregiver is provided, The upper side of the seat part is formed in a cushion structure in which a stored cushion material is covered with an overhang.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A chair 1 for people with difficulty walking shown in FIGS. 1 and 2 has a seat portion 2, a backrest 3 erected from the rear end of the seat portion 2, and armrests 4 provided on both sides of the seat portion 2. doing. The seat portion 2 is formed in a substantially rectangular shape, and a cushion structure such as urethane foam or urethane chip is accommodated on the upper surface, and the surface is covered with a cloth, leather, resin sheet or the like. The seat portion 2 is provided on the upper surface of the seat plate 5 made of a solid material. Further, the backrest 3 has a cushion structure similar to that of the seat portion 2. Furthermore, a hand grip 3a is provided on the upper rear side of the backrest 3, and the chair 1 can be moved in an arbitrary direction by a caregiver holding the hand grip 3a.

  And the upper end of the gas spring 6 is attached to the lower surface of the seat board 5 which provided the seat part 2 in the upper surface as a raising / lowering apparatus which adjusts the height of the seat part 2. As shown in FIG. The gas spring 6 is used in a well-known chair or the like, and detailed description thereof is omitted. A height adjustment lever 7 is provided at the upper end of the gas spring 6, and the seat portion 2 can be moved to an arbitrary height by adjusting the gas in the gas spring 6 by lifting the tip end side of the height adjustment lever 7 upward, for example. You can move on. Further, by returning the height adjusting lever 7 to the original position, it can be fixed at an arbitrary height.

  The lower end of the gas spring 6 is attached to the pedestal portion 8. The pedestal portion 8 is formed in a flat plate shape or an annular shape by a solid plate material. In order to support the rod-shaped gas spring 6, the base portion 8 is provided with a plurality of support members 8 a formed in a semicircular shape on the side surface, and supports the central portion of the gas spring 6. Further, a footrest portion 9 is integrally formed on the pedestal portion 8 at a position corresponding to the front side of the seat portion 2. As shown in FIG. 1, the footrest unit 9 is configured to place the foot of the person with difficulty walking on the seat part 2 when the person with difficulty walking is seated on the seat part 2.

  On the lower surface of the pedestal portion 8 corresponding to the lower side of the footrest portion 9, a pair of direction changeable casters 10 is disposed. As the caster 10, a commercially available caster can be used. In addition, a pair of wheels 11 are rotatably disposed below a position corresponding to the rear side of the seat portion 2. As shown in FIG. 1, the wheel 11 is formed into a spoke wheel type having a spoke 11a, and a tire made of an elastic body is provided on the periphery. Like a general wheel, a hub shaft 11b is provided at the center of the wheel 11, and is rotatably supported by a bearing 12 disposed on the lower surface side of the seat portion 8. The outer diameter of the pair of wheels 11 is set to 10 cm to 25 cm. In general dwellings and facilities that are not barrier-free, there are, for example, thresholds or the like having a level difference of about 3 cm to 5 cm. It is necessary for the pair of wheels 11 to easily get over the step. For this purpose, the outer diameter of the wheel 11 needs to be at least 10 cm, and when it is set to an outer diameter of 25 cm or more, it becomes unbalanced with general furniture in a living room or a dining place, This will hinder the raising and lowering of the seat portion 8.

  FIG. 3 shows an embodiment of the wheel stopper mechanism. The wheel stopper mechanism is disposed on the lower surface of the pedestal portion 8. A pair of rod-like stoppers 13 that engage by inserting the tip side between the spokes 11a of the left and right wheels 11 to brake the wheels 11 are supported by a support portion 14 so as to be swingable in the axial direction. On the base end side of the stopper 13, a sliding portion 13 a that comes into sliding contact with the cam 15 is provided. Between the sliding portion 13a and the support portion 14, a coil-shaped pressing spring 16 is fitted to each stopper 13, and the sliding portion 13a of the stopper 13 is normally pressed against the cam 15. .

  The cam 15 is formed in a substantially triangular shape, and the left and right slopes are cam surfaces 15a. A long hole 15b is formed in the center of the cam 15, and is engaged with a pin 17 provided on the pedestal 8 to support the cam 15 so as to be movable in the longitudinal direction of the long hole 15b. Further, an operating lever 18 is provided at the top of the cam 15 so as to be swingable. The operation lever 18 is formed in a rod shape, and a groove-like locking portion 18a is formed at two positions in the middle portion. The position of the cam 15 is determined by inserting any one of the groove-shaped locking portions 18 a into the engaging pins 19 provided on the pedestal portion 8. Further, the side of the operation lever 18 opposite to the locking portion 18 a is pressed by the pressing spring 20, and normally presses the operation lever 18 in the direction of the engagement pin 19.

  Next, the wheel stopper mechanism will be described. FIG. 3A shows a state where the wheel 11 is braked. At this time, the lower locking portion 18 a of the operation lever 18 is inserted into the engagement pin 19 by the pressing of the pressing spring 20. In this state, the cam 15 is located at an upper position as shown in the drawing and has a wide lateral width. Therefore, the stopper 13 moves in the left-right direction against the elastic force of the pressing spring 16, and the left and right wheels The tip side is inserted between the 11 spokes 11a and is in a braking state.

  When releasing the braking of the wheel 11, as shown in FIG. 3B, the operation lever 18 is moved in the direction of the pressing spring 20 so that the groove-shaped locking portion 18a is detached from the engagement pin 19, and the operation lever 18 is moved downward in the figure and moved to a position where the upper locking portion 18 a is inserted into the engagement pin 19. In this state, since the pressing spring 20 presses the operation lever 18, the insertion state of the locking portion 18a into the engaging pin 19 is maintained. In this state, the cam 15 is in a lower position as shown in the drawing and has a narrow lateral width. Therefore, the stopper 13 moves toward the cam 15 by the elasticity of the pressing spring 16, and the left and right wheels 11. It becomes possible to move away from the spoke 11a. In this manner, the rotation of the wheel 11 can be braked or released by operating the operation lever 18.

  FIG. 4 shows another embodiment of the lifting device that adjusts the height of the seat portion 2. The lifting device shown in FIG. 4 has a configuration using a rack and pinion. A case portion 21 is provided on the upper side of the pedestal portion 8, and a rack 22 in which teeth are formed on a flat bar is disposed so as to be movable up and down. The upper end of the rack 22 is fixed to the lower surface side of the seat portion 2. In addition, a pinion 23 made of a small-diameter circular gear is rotatably disposed inside the case portion 21. A handle 24 is attached to the rotation shaft of the pinion 23.

  Then, by rotating the handle 24 clockwise or counterclockwise, the pinion 23 rotates to move the rack 22 up and down, thereby adjusting the height of the seat portion 2. When the rack and pinion system is adopted as the lifting device in this way, the height can be adjusted even when the person with difficulty walking M is seated on the seat portion 2, and the seat portion 2 can be adjusted like the gas spring 6 described above. When raising, it is possible to eliminate the inconvenience that the walking difficult person M himself / herself has to float. In addition, it is preferable to provide a brake means or a lock means on the pinion 23 or the handle 24 so that the seat portion 2 is not carelessly processed.

  Although the present invention has been specifically described above based on the embodiments, it is needless to say that the present invention is not limited to the above embodiments and can be variously modified without departing from the gist thereof. In the above-described embodiment, the wheel stopper mechanism may be of a type in which the stopper is engaged, such as a structure connected by a flat plate, in addition to a structure in which the spokes of the wheel penetrate. Moreover, as a raising / lowering apparatus, you may employ | adopt the pantograph jack type which a jack main body expands / contracts by rotating a long volt | bolt, and adjusts height.

DESCRIPTION OF SYMBOLS 1 Chair 2 Seat part 3 Backrest 3a Hand pushing grip 6 Gas spring 7 Height adjustment lever 8 Base part 9 Footrest part 10 Caster 11 Wheel 11a Spoke 13 Stopper 22 Rack 23 Pinion M Walking difficult person

Claims (3)

A chair with a seat and a backrest,
A lifting device for adjusting the height is attached between the lower surface of the seat portion and the pedestal portion,
The pedestal portion includes a footrest portion protruding at a position corresponding to the front side of the seat portion, a pair of turnable casters disposed below the footrest portion, and the seat portion. A pair of wheels disposed below a position corresponding to the rear side, and a wheel stopper mechanism that brakes or cancels the rotation of the wheels by the operation of an operation lever;
On the upper rear side of the backrest, a hand grip for caregivers is provided,
The upper side of the seat portion is a chair for a person with difficulty in walking formed in a cushion structure in which a stored cushion material is covered with an upholstery.   The chair for persons with difficulty walking according to claim 1, wherein the pair of wheels disposed on the rear side of the seat portion has an outer diameter of 10 cm to 25 cm.   The pair of wheels disposed on the rear side of the seat portion is configured as a spoke wheel type having spokes, and a difficulty is encountered in braking by engaging a stopper member of a wheel stopper mechanism with the spoke. Chair for the elderly.

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