JP2023056703A - Transfer assistance chair - Google Patents

Abstract

To provide a transfer assistance chair for facilitating a transfer assistance and reducing a load on a work to lift up a body of a cared person.SOLUTION: A transfer assistance chair 10 includes a base frame 12, wheels 18b or the like, a seat board part 20, a seat board support frame 22, and a lift part 26. The base frame 12 includes a left-side supporter 34, a right-side supporter 36, and a handle 42. A left-side rotary frame 66 and a right-side rotary frame 68 of the seat board support frame 22 are respectively and rotatably attached to the left-side supporter 34 and the right-side supporter 36 so as to selectively become a first state of proximity and a second state of separation. The lift part 26 includes: a lift supporter 114 arranged at a horizontally center part of a front part of the base frame 12 and vertically extended; a bar-shape arm 116 extended backward from an upper end of the lift supporter 114 so as to suspend a body of a cared person; and an elevating/lowering mechanism 118.SELECTED DRAWING: Figure 2

Description

Applied for the application of Article 30, Paragraph 2 of the Patent Act August 31, September 1, 2021 Posted on the website of Best One Co., Ltd. https://happy-bestone. com/ Posted on YouTube video distribution site on August 31 and September 1, 2021 https://www. youtube. com/channel/UCUxs_4DOTtwhhVvOARC1a6g/videos? view = 0 & sort = da & flow = grid September 1, 2021 Posted in the database of the Techno Aid Association http://www. techno-aids. or. jp/

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer assist chair having a transfer assist function operated by a caregiver when moving a cared person.

When moving a cared person sleeping on a bed to another place, a caregiver provides transfer assistance for transferring the cared person from the bed to a chair for movement. If the other place is the toilet, the caregiver provides transfer assistance to transfer the care-receiver from the transfer chair to the toilet seat. When returning the cared person to the bed, the caregiver assists the transfer in the reverse order of the above. As described above, transfer assistance is frequently performed in nursing care sites, and various devices have been conventionally made to reduce the burden.

For example, Patent Literature 1 below discloses a wheelchair with a lift that has a function of moving a care recipient in a sleeping position on a bed to a wheelchair. This lift-equipped wheelchair includes a wheelchair constructed substantially in the same manner as a general wheelchair, and a lift for suspending and moving the care-receiver's body. A weight support column (lift column) of the lift is provided at one end in the left-right direction of the front portion of the wheelchair so as to extend in the vertical direction. The upper part of the weight support column (lift column) is tilted forward, and the upper end is provided with a rope drum around which a lift rope for suspending the body of the care recipient is wound. A rear pulling drum is provided at the rear of the wheelchair for winding a rear pulling rope for pulling the cared person's body rearward.

Further, Patent Literature 2 listed below discloses a transfer assist chair configured to allow a care recipient to be transferred between an assist chair and a bed. In this transfer assist chair, the seat plate member on which the care-receiver sits is divided into left and right parts, and the front part of the left rotating frame supporting the left seat plate member is positioned on the left side of the front part of the base. Rotatably attached to the shaft member, the front portion of the right rotating frame supporting the right seat plate member is rotatably attached to the right shaft member provided in the front portion of the base. A left push handle member is provided at the rear of the left rotating frame, and a right push handle member is provided at the rear of the right rotating frame. The space for accommodating the care recipient seated on the seat plate is open forward, and the space secured below the seat plate member is open rearward so that the bed can be received from the rear. is open.

JP-A-2000-333996 Utility Model Registration No. 3226653

However, the lift-equipped wheelchair disclosed in Patent Document 1 uses two kinds of ropes, a lift rope and a rear pull rope, and thus has a problem of a complicated structure and high manufacturing cost. Moreover, since it is necessary to operate two kinds of ropes, there is a problem that the work for transfer assistance is complicated. On the other hand, the transfer assist chair disclosed in Patent Document 2 has a simple structure and can easily perform the work for transfer assistance, but the work burden on the caregiver when lifting the cared person's body is increased. I had a big problem.

The present invention has been made to solve the above problems. It has a simple structure and can easily perform work for transfer assistance, and reduces the burden on the caregiver when lifting the care-receiver's body. To provide a transfer assist chair capable of reducing

In order to achieve the above object, the transfer assist chair according to the present invention is characterized by a base frame to be placed on the floor, a plurality of wheels for moving the base frame on the floor, and a chair on which the care-receiver sits. A front and rear view of a cared person seated on the seat plate, comprising a plate-shaped seat plate, a seat plate support frame for supporting the seat plate, and a lift portion for lifting the body of the care receiver. When the left-right direction is taken as a reference, the base frame includes a rod-shaped left base member and a right base member that are spaced apart from each other in the left-right direction so as to extend in the front-rear direction along the floor surface; A left strut provided to extend vertically at the front end of the left base member, a right strut provided to extend vertically at the front end of the right base member, and the left strut and the right strut. and a rod-shaped handle configured to be bridged between and gripped by a caregiver's hand, wherein the seat plate support frame is secured between the left base member and the right base member. The left strut and the right strut are rotated so as to selectively take a first state in which they are close to each other above the space and a second state in which they are separated from each other by opening in the left-right direction from the first state. a left pivoting frame and a right pivoting frame removably attached to each other, the seat plate portion being attached to the left pivoting frame and forming a left portion of the seat plate portion in the first state; and a right seat plate piece attached to the right rotating frame and constituting the right side portion of the seat plate portion in the first state, and the lift portion is positioned at the center of the front portion of the base frame in the left-right direction. a lift strut provided to extend in the vertical direction in the part; a rod-shaped arm portion extending rearward from the upper end of the lift strut for suspending the body of the care recipient; and an elevating mechanism for elevating the cared person's body.

According to this configuration, when the left rotating frame and the right rotating frame are in the first state, the cared person can be seated on the seat plate portion. When the left and right rotating frames are opened above the bed and the toilet seat to put them in the second state, a space can be secured between the left and right seat plate pieces. A cared person can be easily transferred between the toilet seat and the seat plate. At this time, the burden on the caregiver can be reduced by attaching the support to the care-receiver's body and lifting the care-receiver's body together with the support by the lift section. Since the direction in which the care-receiver is pulled up may be the straight upward direction, the structure of the lift section can be simplified, and the manufacturing cost can be kept low.

In addition, even when the seat plate is placed on the bed, the handle provided on the front part of the base frame can be placed outside the bed, so that the caregiver can easily grasp the handle by hand. easy to operate. Furthermore, the lift column is provided at the center of the front portion of the base frame in the left-right direction and extends vertically, and the arm portion is provided so as to extend rearward from the upper end of the lift column. The position can be set at the center of the transfer chair in plan view, and the transfer chair can be stabilized.

Another feature of the transfer assist chair according to the present invention is that the lift strut is fixed to the handle portion.

According to this configuration, since the lift support is fixed to the bar-shaped handle portion that spans between the left support and the right support, the lift support can be stably supported by the handle.

Another feature of the transfer assist chair according to the present invention is that the base frame is spaced downward from the handle portion and bridged between the left support and the right support, and is grasped by the care-receiver's hand. and wherein said lift strut is fixed to both said handle portion and said handrail portion.

With this configuration, the lift strut can be stably supported by the handle portion and the handrail portion.

Another feature of the transfer assist chair according to the present invention is that a left movable part and a right movable part are provided at respective lower ends of the left support and the right support for moving the left support and the right support in the vertical direction. and a first expansion and contraction device configured to move the left support column and the right support column vertically by extending and contracting with power applied from a first power source. be.

According to this configuration, the height adjustment mechanism can be configured with a simple structure using the first expansion/contraction device.

Another feature of the transfer assist chair according to the present invention is that the base frame has a rod-shaped connection base member that connects a front end portion of the left base member and a front end portion of the right base member, The device is configured such that its axial center is located between the upper surface of the central portion of the connecting base member in the lateral direction and the lower end surface of the lift strut, and when the first telescopic device is extended, the first 1. An upward force is input to the lift column from the telescopic device.

According to this configuration, the load of the lift section can be stably received by the first telescoping device arranged directly below the lift column, and the load of the lift section prevents the left column, the right column, and the handle portion from being distorted. can.

Another feature of the transfer assist chair according to the present invention is that the elevating mechanism includes a rotary connecting portion that rotatably connects a front end portion of the arm portion to an upper end portion of the lift column, and one end portion of which is connected to the lift column. The power supplied from the second power source is attached to a portion of the support that is spaced downward from the pivot connection portion, and the other end is attached to a portion of the arm portion that is spaced rearward from the pivot connection portion. and a second telescoping device configured to change the inclination angle of the arm portion by telescoping the arm.

According to this configuration, the lifting mechanism can be configured with a simple structure using the second expansion and contraction device.

Another feature of the transfer assist chair according to the present invention is that the left wheel mounting portion and the right wheel mounting portion are provided so as to protrude forward from the left base member and the right base member, respectively. and the right wheel mounting portion, respectively.

According to this configuration, the entire transfer chair can be prevented from tilting forward by the left wheel mounting portion, the right wheel mounting portion, and the wheels mounted thereon. In addition, even when the left base member and the right base member are inserted into the space below the bed or the like, the left wheel mounting portion and the right wheel mounting portion are located outside the space, so the turning performance is excellent with respect to these. Larger wheels can be attached.

Another feature of the transfer assist chair according to the present invention is that a plate-like footrest is bridged between the left wheel mounting portion and the right wheel mounting portion for placing the feet of the care recipient. .

According to this configuration, since the plate-shaped footrest can be arranged in a wide range between the left wheel mounting portion and the right wheel mounting portion, the cared person can easily place his/her feet on the footrest.

Another feature of the transfer assist chair according to the present invention is that the space secured below the seat plate is opened toward the rear so that the bed used by the care recipient can be received from the rear. It is in.

According to this configuration, the bed can be received from the rear in the space secured below the seat plate. It is sufficient to move the auxiliary chair rearward, and the workability is good.

Another feature of the transfer assist chair according to the present invention is that the lift column is configured to be vertically divisible above the handle portion.

According to this configuration, when the lift section is not used, the upper part of the lift support column and the arm section can be easily removed, so that the overall size of the transfer assist chair can be reduced and the operability can be enhanced.

1 is a perspective view showing a use state of a transfer assist chair according to a first embodiment; FIG. 1 is a perspective view showing the configuration of a transfer assist chair according to a first embodiment; FIG. Fig. 2 is a perspective view showing the configuration of the transfer assist chair with the main part of the lift section removed; Fig. 2 is an exploded perspective view showing the configuration of part of the transfer assist chair; It is a figure which shows the locking mechanism of a seat-plate support frame. FIG. 4 is an exploded perspective view showing the configuration of part of the right movable portion; It is an exploded perspective view which shows the structure of some lift columns. FIG. 11 is a perspective view of the configuration of the seat plate support frame and the seat plate portion in the second state, as viewed obliquely from the rear upper side; FIG. 10 is a perspective view seen obliquely from the front and above, showing a state in which the seat plate support frame and the seat plate portion in the first state are arranged on the bed;

Hereinafter, an embodiment of a transfer assist chair according to the present invention will be described with reference to the drawings. It should be noted that the directions of "up, down, left, right, front, and rear" used in the following description are directions viewed from the cared person X seated on the seat plate portion 20, and are indicated by arrows in the drawings. matches.

(Composition of a transfer assist chair)
FIG. 1 is a perspective view showing a use state of a transfer assist chair 10 according to the first embodiment. FIG. 2 is a perspective view showing the configuration of the transfer assist chair 10. As shown in FIG. FIG. 3 is a perspective view showing the configuration of the transfer assist chair 10 with the main part of the lift section 26 removed. FIG. 4 is an exploded perspective view showing the configuration of part of the transfer assist chair 10. As shown in FIG. A transfer assistance chair 10 shown in FIG. 1 is a care assistance tool operated by a caregiver (not shown) when moving a care recipient X, and has a function of assisting the caregiver's transfer assistance. .

As shown in FIG. 2, the transfer assist chair 10 includes a base frame 12 placed on a floor surface F, left and right wheel mounting portions 14 and 16, and a plurality of (four in this embodiment) wheels 18a to 18d. , a seat plate portion 20 , a seat plate support frame 22 , a height adjustment mechanism 24 and a lift portion 26 . As shown in FIG. 3, the main part of the lift section 26 is configured to be detachable.

As shown in FIG. 4 , the base frame 12 is a base portion of the transfer assist chair 10 . The base frame 12 is a rod-shaped member provided at intervals in the left-right direction so as to extend in the front-rear direction along the floor surface F. It has a left base member 28 , a right base member 30 , and a bar-like connection base member 32 that connects the front end portion 28 a of the left base member 28 and the front end portion 30 a of the right base member 30 . These three members 28, 30, and 32 are formed in the shape of square pipes having a square cross section, and are firmly joined together so as to form a U-shape (or U-shape) in plan view. . When the left rotating frame 66 and the right rotating frame 68, which will be described later, are in the second state (FIG. 8), the cared person X can stand on the floor F inside these three members 28, 30, 32. can be done.

The base frame 12 also includes a left support column 34 provided to extend vertically at the front end portion 28a of the left base member 28, and a right support column provided to extend vertically at the front end portion 30a of the right base member 30. 36. Each of the left support 34 and the right support 36 is formed in the shape of a round pipe having a circular cross section, and its upper end is inclined forward.

The lower end portion 34a of the left support 34 is attached to the front end portion 28a of the left base member 28 via the left movable portion 94 of the height adjustment mechanism 24 (FIG. 2). On the rearward surface of the lower end portion 34a of the left support column 34, a rod-shaped left rotation shaft portion 38 is rotatably fitted from above with a mating portion (front end portion) 66b of a left rotation frame 66, which will be described later. is provided.

The lower end portion 36a of the right support 36 is attached to the front end portion 30a of the right base member 30 via the right movable portion 96 of the height adjustment mechanism 24 (FIG. 2). A rod-shaped right rotation shaft portion 40 to which a mating portion (front end portion) 68b of a right rotation frame 68, which will be described later, is rotatably fitted from above on a rearward surface of the lower end portion 36a of the right support column 36. is provided.

Further, the base frame 12 is bridged between the left support 34 and the right support 36 and configured to be gripped from the front by a caregiver's (not shown) hand. A bar-shaped handrail part 44 is provided so as to be spaced downward from the support and bridged between the left support 34 and the right support 36 so as to be grasped by the hand of the person X to be cared from behind. The handle portion 42 and the handrail portion 44 are formed in the shape of round pipes having a circular cross section.

The left end portion 42a of the handle portion 42 and the upper end portion 34b of the left support column 34 are connected via a smoothly curved curved portion 46a. , are connected via a smoothly curved curved portion 46b. The left end 44a of the handrail 44 is welded to the right-facing surface of the left support 34, and the right end 44b of the handrail 44 is welded to the left-facing surface of the right support 36. It is

As shown in FIG. 4 , the left wheel mounting portion 14 is a plate-like member that is rectangular in plan view and protrudes forward from the upper portion of the front end portion 28 a of the left base member 28 . The rear end portion of the left wheel mounting portion 14 is joined to the front end portion 28a of the left base member 28 using joining means (not shown) such as bolts, nuts and welding. A through hole 14a through which a bolt 48a provided on the third wheel 18c is inserted is formed in the front end portion of the left wheel mounting portion 14. As shown in FIG.

The right wheel mounting portion 16 is a plate-like member that is rectangular in plan view and protrudes forward from the upper portion of the front end portion 30 a of the right base member 30 . The rear end portion of the right wheel mounting portion 16 is joined to the front end portion 30a of the right base member 30 using joining means (not shown) such as bolts, nuts, and welding. A through hole 16a through which a bolt 48b provided on the fourth wheel 18d is inserted is formed in the front end portion of the right wheel mounting portion 16. As shown in FIG.

As shown in FIG. 1, a footrest 50 is provided between the left wheel mounting portion 14 and the right wheel mounting portion 16 so as to place the feet of the care recipient X thereon. As shown in FIG. 4, the footrest 50 is formed in a rectangular plate shape in plan view, and the front and rear ends of the footrest 50 are smoothly curved downward. A through hole 50a through which a bolt 48a provided on the third wheel 18c is inserted is formed at the left end of the footrest 50, and a bolt 48b provided on the fourth wheel 18d is provided at the right end of the footrest 50. A through hole 50b to be inserted is formed.

As shown in FIG. 4, the wheels 18a-18b are members for moving the base frame 12 on the floor surface F. As shown in FIG. A first wheel 18a and a second wheel 18b that support the rear portion of the base frame 12 are configured to face in any direction, and have stoppers (not shown) for stopping their rotation. The first wheel 18a is fixed to the lower surface of the rear end portion 28b of the left base member 28 using joining means (not shown) such as bolts and nuts, and the second wheel 18b is attached to the right base member 30. It is fixed to the lower surface of the rear end portion 30b by using joining means (not shown) such as bolts and nuts. The first wheel 18a and the second wheel 18b are inserted together with the left base member 28 and the right base member 30 into a space S (FIG. 9) secured below the bed 82 or the like. Therefore, the diameters of the first wheel 18a and the second wheel 18b are set as small as possible, assuming that the height of the space S (FIG. 9) is low.

As shown in FIG. 4, the third wheel 18c and the fourth wheel 18d that support the front portion of the base frame 12 are configured to face in any direction, and stoppers 52a and 52b are provided to stop their rotation. have. The third wheel 18c is fixed to the lower surface of the front end portion of the left wheel mounting portion 14 using bolts 48a and nuts 54a, and the fourth wheel 18d is fixed to the lower surface of the front end portion of the right wheel mounting portion 16 by bolts 48b. and a nut 54b. The diameters of the third wheel 18c and the fourth wheel 18d are set larger than the diameters of the first wheel 18a and the second wheel 18b in order to improve turning performance.

When attaching the third wheel 18c and the fourth wheel 18d to the left wheel mounting portion 14 and the right wheel mounting portion 16, the footrests 50 are placed on the upper surfaces of the left wheel mounting portion 14 and the right wheel mounting portion 16, respectively. . A bolt 48a provided on the third wheel 18c is inserted through the through hole 14a of the left wheel mounting portion 14 and the through hole 50a of the footrest 50 and screwed onto the nut 54a. A bolt 48b provided on the fourth wheel 18d is inserted through the through hole 16a of the right wheel mounting portion 16 and the through hole 50b of the footrest 50 and screwed onto the nut 54b. Furthermore, caps 56a and 56b are attached to the nuts 54a and 54b.

As shown in FIG. 4, the seat plate portion 20 is a plate-like member having a cushioning property on which the care recipient X (FIG. 1) sits, and is divided in the left-right direction. The left seat plate piece 58 that constitutes the left portion of the seat plate portion 20 is formed in a rectangular shape that is elongated in the front-rear direction in a plan view. A notch 60a is formed. The right seat plate piece 62 that constitutes the right portion of the seat plate portion 20 is formed in a rectangular shape that is long in the front-rear direction when viewed from above, and has a semicircular shape at the left end of the front-rear direction central portion of the right seat plate piece 62 . A notch 60b is formed.

As shown in FIG. 2, the seat plate portion 20 is configured by arranging the left seat plate piece 58 and the right seat plate piece 62 side by side. The overall shape of the seat plate portion 20 in a plan view is a rectangle elongated in the left-right direction, and a circular hole 60 is formed by notches 60a and 60b at the center of the entire seat plate portion 20 . The buttocks of the cared person X (FIG. 1) are received in the inner periphery of this hole 60 .

As shown in FIG. 4, the seat plate support frame 22 is a member that supports the seat plate portion 20 and the backrest portion 64, and is a left rotating frame that is rotatably attached to each of the left support column 34 and the right support support 36. 66 and right pivot frame 68 . The backrest portion 64 is a portion that receives the back of the care recipient X (FIG. 1) seated on the seat plate portion 20, and is divided in the left-right direction. That is, the left portion of the backrest portion 64 is composed of a plate-shaped left backrest portion 70 having cushioning properties, and the right portion of the backrest portion 64 is composed of a plate-shaped right backrest portion 72 having cushioning properties. there is

The left pivot frame 66 includes a rod-shaped support portion 66a that supports the left seat plate piece 58 and the left backrest portion 70, a rod-shaped fitting portion 66b that is fitted to the left pivot shaft portion 38, and a rod-shaped arm rest. 66c. These parts are continuously and integrally formed by a round pipe-shaped member having a circular cross section.

More specifically, the support portion 66a includes a seat plate support portion 74a formed along the left edge and the rear edge of the left seat plate piece 58, and a backrest support portion 74a formed along the lower edge of the left backrest portion 70. and a connecting portion 74c connecting the rear right end portion of the seat plate support portion 74a and the right end portion of the backrest support portion 74b. A fitting portion 66b is formed to extend downward from the front end portion of the seat plate support portion 74a, and an armrest portion 66c is formed to extend forward from the left end portion of the backrest support portion 74b.

The left seat plate piece 58 is joined to the seat plate support portion 74a by using joining means such as bolts and nuts and brackets (not shown), and the left backrest portion 70 is joined by joining means such as bolts and nuts and brackets (not shown). (not shown)) to the backrest support portion 74b. The armrest portion 66c and the backrest support portion 74b are covered with a pipe-shaped cover member 76a having cushioning properties.

The right rotation frame 68 includes a rod-shaped support portion 68a that supports the right seat plate piece 62 and the right backrest portion 72, a rod-shaped fitting portion 68b that is fitted to the right rotation shaft portion 40, and a rod-shaped arm rest. 68c. These parts are continuously and integrally formed by a round pipe-shaped member having a circular cross section.

More specifically, the support portion 68a includes a seat plate support portion 80a formed along the right and rear edges of the right seat plate piece 62 and a backrest support portion 80a formed along the lower edge of the right backrest portion 72. and a connecting portion 80c connecting the rear left end portion of the seat plate support portion 80a and the left end portion of the backrest support portion 80b. A fitting portion 68b is formed to extend downward from the front end portion of the seat plate support portion 80a, and an armrest portion 68c is formed to extend forward from the right end portion of the backrest support portion 80b.

The right seat plate piece 62 is joined to the seat plate support portion 80a using joining means such as bolts and nuts and a bracket (not shown), and the right backrest portion 72 is joined by joining means such as bolts and nuts and a bracket ( (not shown)) to the backrest support portion 80b. The armrest portion 68c and the backrest support portion 80b are covered with a pipe-shaped cover member 76b having cushioning properties.

As described above, the left rotating frame 66 and the right rotating frame 68 are rotatably attached to the left supporting column 34 and the right supporting column 36 via the left rotating shaft portion 38 and the right rotating shaft portion 40, respectively. ing. Therefore, above the space Q secured between the left base member 28 and the right base member 30, there are a first state in which they are close to each other, and a second state in which they are separated from each other by opening in the left-right direction from the first state. can be taken selectively. In the first state, the left seat plate piece 58 constitutes the left portion of the seat plate portion 20 , and the right seat plate piece 62 constitutes the right portion of the seat plate portion 20 . A space Q secured below the seat plate portion 20 is opened toward the rear so that a bed 82 (FIG. 9) used by the care recipient X can be received from the rear.

FIG. 5 is a diagram showing the locking mechanism 84 of the seat plate support frame 22. As shown in FIG. When the left pivot frame 66 and the right pivot frame 68 are in the first state, the left pivot frame 66 and the right pivot frame 68 must be rotated in order for the care recipient X to sit on the seat plate portion 20 (FIG. 2). should be prevented from opening arbitrarily. Therefore, the seat plate support frame 22 is provided with a lock mechanism 84 . As shown in FIG. 5, the lock mechanism 84 is configured by a projecting hooked portion 86 provided on the rear facing surface of the left connecting portion 74c and a rear facing surface of the right connecting portion 80c. and a movably provided hook-shaped hook portion 88 . A spring member 90 for biasing the hooking portion 88 counterclockwise is incorporated in the hooking portion 88 . As shown in FIG. 8, a plate-like positioning member 92 formed in a U shape in plan view for positioning the left connecting portion 74c is attached to the right connecting portion 80c. The member 92 is formed with a notch 92 a for avoiding interference with the hooked portion 86 .

As shown in FIG. 5, when the left pivoting frame 66 and the right pivoting frame 68 are closed to take the first state (the state indicated by the solid line), the left connecting portion 74c is received by the positioning member 92 and the right It is positioned with respect to the connecting portion 80c. At this time, in order to prevent the hooking portion 88 from interfering with the hooked portion 86 , the caregiver manually operates the hooking portion 88 to rotate clockwise against the bias of the spring member 90 . rotate to After the left connecting portion 74 c is completely received by the positioning member 92 , when the hook portion 88 is released, the hook portion 88 is hooked to the hooked portion 86 by the force of the spring member 90 . 5 indicates the position of the hooking portion 88 in the natural state, and P2 indicates the position of the hooking portion 88 rotated clockwise.

As shown in FIG. 2, the height adjustment mechanism 24 is a mechanism for adjusting the heights of the seat plate portion 20 and the lift portion 26 by vertically moving the left support column 34 and the right support support 36 . The height adjustment mechanism 24 is provided at the lower end portion 34a of the left support column 34, and is provided at the lower end portion 36a of the right support column 36, and the left movable portion 94 for moving the left support column 34 in the vertical direction. It has a right movable part 96 for vertical movement and a first telescopic device 98 .

The left movable portion 94 includes a support pipe 100a having a circular cross section and protruding upward from the front end portion 28a of the left base member 28, a rod-shaped sliding guide member 100b having a circular cross section, and a support pipe. It has a connecting member 100c that connects the pipe 100a and the sliding guide member 100b. The outer diameter of the slide guide member 100b is set to be slightly smaller than the respective inner diameters of the support pipe 100a and the left support 34, and the lower end of the slide guide member 100b is inserted into the support pipe 100a to form a connecting member. 100c. A portion of the sliding guide member 100b protruding upward from the support pipe 100a is slidably inserted into the left support 34 from below.

The right movable portion 96 includes a support pipe 102a having a circular cross section and protruding upward from the front end portion 30a of the right base member 30, a rod-shaped sliding guide member 102b having a circular cross section, and a support pipe. It has a connecting member 102c that connects the pipe 102a and the sliding guide member 102b. The outer diameter of the sliding guide member 102b is set to be slightly smaller than the respective inner diameters of the support pipe 102a and the right support 36, and the lower end of the sliding guide member 102b is inserted into the support pipe 102a to form a connecting member. 102c. A portion of the slide guide member 102b protruding upward from the support pipe 102a is slidably inserted into the right support 36 from below.

FIG. 6 is an exploded perspective view showing the configuration of part of the right movable portion 96. As shown in FIG. As shown in FIG. 6, the connecting member 102c constituting the right movable portion 96 includes a C-shaped mounting portion 103a mounted on the outer peripheral surface of the support pipe 102a and a rod-shaped connecting pin 103b fixed to the mounting portion 103a. and When connecting the support pipe 102a and the slide guide member 102b, the connection pin 103b is inserted through the through holes 103c and 103d formed in the support pipe 102a and the slide guide member 102b, respectively, and is attached to the mounting portion. 103a is attached to the outer peripheral surface of the support pipe 102a. A connecting member 100c of the left movable portion 94 shown in FIG.

As shown in FIG. 2, the first extension/contraction device 98 is configured to vertically move the left support 34 and the right support 36 by extending and contracting with power applied from the first power source. The first expansion/contraction device 98 of the present embodiment is an electric actuator having an expansion/contraction rod 104, and the first power source is a battery (not shown) that supplies electric power to the drive motor of the electric actuator. The lower end portion of the first expansion/contraction device 98 is attached to a bracket 33 (FIG. 4) provided on the upper surface of the central portion of the connection base member 32 in the left-right direction using bolts and nuts (not shown). The axial center of the first telescopic device 98 , that is, the axial center of the telescopic rod 104 is arranged between the upper surface of the central portion of the connecting base member 32 in the left-right direction and the lower end surface of the lift column 114 . Therefore, when the first telescopic device 98 is extended, an upward force is input from the first telescopic device 98 to the lift strut 114 via the input section 120 or the like. A switch pillar 106 is provided alongside the telescopic rod 104 , and a switch 108 for operating the first telescopic device 98 is attached to the upper end of the pillar 106 .

As shown in FIG. 1, the lift part 26 is a device for lifting the body of the person X to be cared. When the body of the person to be cared X is lifted using the lift section 26 , the body of the person to be cared X is attached with a support (sling sheet) 110 . The support (sling sheet) 110 of this embodiment is configured to be suspended by four suspension belts 112a to 112d, and includes a pair of belts 112a and 112c facing each other in the front-rear direction and another pair of belts 112b and 112b. 112d are formed continuously.

As shown in FIG. 2, the lift section 26 includes a lift column 114 extending vertically in the center of the front portion of the base frame 12 in the left-right direction, and an upper end portion 114a of the lift column 114 extending rearward. A rod-shaped arm portion 116 for suspending the body of the care recipient X together with the support (sling sheet) 110 shown in FIG. and a lifting mechanism 118 .

FIG. 7 is an exploded perspective view showing the configuration of part of the lift strut 114. As shown in FIG. As shown in FIG. 7, the lift strut 114 is shaped like a round pipe with a circular cross section. As shown in FIG. 2, the lower end 114b of the lift strut 114 is fixed to the upwardly facing surface of the handrail 44 by welding. A round pipe-shaped input portion 120 is fixed by welding to the downward facing surface of the handrail portion 44 so as to be arranged on an extension line of the lift column 114 . A portion of the lift column 114 that intersects with the handle portion 42 is located rearward of the handle portion 42 and is fixed to the rearward facing surface of the handle portion 42 by welding.

As shown in FIG. 2, in this embodiment, the upper ends of the left support 34 and the right support 36 are tilted forward, and the handle section 42 that spans between them is more inclined than the handrail section 44. are also placed in front. This causes the lift post 114 welded to the rearwardly facing surface of the handle portion 42 to be tilted slightly forward. Further, the upper end surface of the telescopic rod 104 constituting the first telescopic device 98 is abutted against the lower end surface of the input portion 120 . Therefore, the axial center of the telescopic rod 104 is arranged between the upper surface of the central portion of the connecting base member 32 in the left-right direction and the lower end surface of the lift support 114 .

As shown in FIG. 7, the lift column 114 is configured to be vertically divisible above the handle portion 42 . That is, the main part of the lift part 26 is configured to be removable. A lower portion 122a and an upper portion 122b of the lift column 114 are connected via a connecting rod 124 at the portion where the lift column 114 is divided. The connecting rod 124 is formed in the shape of a round pipe having a circular cross section, and the outer diameter of the connecting rod 124 is set slightly smaller than the inner diameter of the lift column 114 . The lower portion of the connecting rod 124 is inserted into the lower portion 122a from above, and the upper portion of the connecting rod 124 is inserted into the upper portion 122b from below. The end surfaces of the lower portion 122a and the upper portion 122b are formed in a shape that has a step in the circumferential direction and can be fitted to each other. Therefore, when the lower portion 122a and the upper portion 122b are butted and connected, the upper portion 122b does not rotate with respect to the lower portion 122a.

As shown in FIG. 2, the arm portion 116 includes a round pipe-shaped first portion 126 having a circular cross section and a round pipe-shaped second portion 126 joined to the rear end portion 126a of the first portion 126 in a T-shape. and a portion 128 . The second portion 128 is provided so as to extend in the horizontal direction, and the first portion 126 is joined to the longitudinal central portion of the second portion 128 so as to form a right angle.

As shown in FIG. 1, a plate-shaped left belt attachment portion 130 is provided on the left portion of the second portion 128 relative to the lengthwise central portion. A through hole 130a is formed to hook a hook member 132 that supports the belts 112a and 112c. A plate-like right belt attachment portion 134 is provided in a portion of the second portion 128 on the right side of the central portion in the longitudinal direction, and the right belt attachment portion 134 supports a pair of suspension belts 112b and 112d. A through hole 134a is formed to which the hook member 136 is hooked.

As shown in FIG. 2, the lifting mechanism 118 has a pivoting connecting portion 140 that pivotally connects the front end portion 116a of the arm portion 116 to the upper end portion 114a of the lift column 114, and a second telescoping device 142. ing. The second expansion/contraction device 142 is configured to change the inclination angle of the arm portion 116 (that is, the height of the rear end portion 116b) by expanding and contracting with power applied from the second power source. The second expansion/contraction device 142 of the present embodiment is an electric actuator having an expansion/contraction rod 144, and the second power source is a battery (not shown) that supplies electric power to the drive motor of the electric actuator. One end 142a of the second telescoping device 142 is rotatably attached to a portion of the lift column 114 which is spaced downward from the rotational connection portion 140, and the other end 142b of the second telescoping device 142 is , is attached to a portion of the arm portion 116 that is spaced rearward from the rotary connection portion 140 . A switch 146 for operating the second telescoping device 142 is mounted on the lift post 114 at a height that is easily accessible to the caregiver. The switch 146 may be fixedly attached to the lift column 114, or may be attached so that its position can be changed as appropriate.

(How to use the transfer chair)
Next, the method of using the transfer assist chair 10 will be described by taking as an example the case of transferring the cared person X from the bed 82 (FIG. 9) to the seat plate portion 20 (FIG. 2). In this transfer assistance, the caregiver first causes the care recipient X to sit on the side edge of the bed 82 . In addition, the left swing frame 66 and the right swing frame 68 of the transfer assist chair 10 are opened to the second state (FIG. 8). Then, the transfer assist chair 10 is brought closer to the care receiver X from the front, and the left seat plate piece 58 and the right seat plate piece 62 are arranged on both left and right sides of the care receiver X above the bed 82 .

Subsequently, the caregiver attaches the support (sling sheet) 110 connected to the four hanging belts 112a to 112d shown in FIG. is operated to raise the rear end portion 116b of the arm portion 116, thereby lifting the body of the care-receiver X together with the support (sling sheet) 110. As shown in FIG. When a gap is created between the buttocks of the person X to be cared for and the bed 82, the caregiver closes the left pivoting frame 66 and the right pivoting frame 68 to the first state, and pulls the lock mechanism 84 (FIG. 5). The hooking portion 88 is hooked on the hooked portion 86 . Thereafter, the cared person X is seated on the seat plate portion 20 by operating the second expansion/contraction device 142 to lower the rear end portion 116b of the arm portion 116 .

In the field of nursing care, various kinds of assistance are provided, such as assistance in transferring from the seat plate portion 20 to the bed 82 (FIG. 9), and assistance between the seat plate portion 20 and a toilet seat or a wheelchair (not shown). The transfer assistance chair 10 can be used for transfer assistance, transfer assistance without using the lift section 26, and assistance using the lift section 26 without using the seat plate section 20. - 特許庁

(Effect of transfer assist chair)
According to this embodiment, the following effects can be obtained by the above configuration. That is, when the left pivot frame 66 and the right pivot frame 68 are in the first state, the cared person X can be seated on the seat plate portion 20 . When the seat plate portion 20 is arranged on the bed 82 or the toilet seat, and the left side swing frame 66 and the right side swing frame 68 are opened to set the second state, the space between the left side seat plate piece 58 and the right side seat plate piece 62 is set. Since a space can be secured in the space, the cared person X can be easily transferred between the bed 82 or the toilet seat and the seat plate portion 20 through this space. At this time, if the support (sling sheet) 110 is attached to the body of the cared person X and the body of the cared person X is lifted together with the support (sling sheet) 110 by the lift section 26, the caregiver's burden is reduced. can be reduced. Since the direction in which the care-receiver X is pulled up may be the vertical direction, the structure of the lift section 26 can be simplified, and the manufacturing cost can be kept low.

Even when the seat plate part 20 is arranged on the bed 82, the handle part 42 provided at the front part of the base frame 12 can be arranged outside the bed 82, so that the caregiver can easily grasp the handle part 42 by hand. , the transfer assist chair 10 is easy to operate. The lift column 114 is provided at the center of the front portion of the base frame 12 in the left-right direction and extends vertically. The center of gravity of the entire transfer chair 10 can be set at the center of the transfer chair 10 in plan view, and the transfer chair 10 can be stabilized.

The lift strut 114 is fixed to the rod-shaped handle portion 42 and the handrail portion 44 that span between the left strut 34 and the right strut 36, so that the lift strut 114 can be stably supported at these two points. . Further, the height adjustment mechanism 24 can be configured with a simple structure using the first expansion/contraction device 98 , and the lifting mechanism 118 can be configured with a simple structure using the second expansion/contraction device 142 . Furthermore, since the load of the lift section 26 can be received by the first telescoping device 98 arranged directly below the lift column 114, the load of the lift section 26 can be stably received, and the left column 34, It is possible to prevent the right pillar 36, the handle portion 42 and the handrail portion 44 from being distorted.

The left wheel mounting portion 14, the right wheel mounting portion 16, and the wheels 18c and 18d mounted thereto can prevent the entire transfer chair 10 from tilting forward. Further, even when the left base member 28 and the right base member 30 are inserted into the space S below the bed 82 or the like, the left wheel mounting portion 14 and the right wheel mounting portion 16 are outside the space S, so these Large wheels 18c and 18d having excellent turning performance can be attached to the . Further, since the plate-shaped footrest 50 can be arranged in a wide range between the left wheel mounting portion 14 and the right wheel mounting portion 16, the cared person X can easily put his feet on the footrest 50.

Since the bed 82 can be received from behind in the space Q secured below the seat plate portion 20, when the caregiver places the seat plate portion 20 above the bed 82, the caregiver pushes the handle portion 42 to transfer. It suffices to move the auxiliary chair 10 rearward, and the workability is good. When the lift part 26 is not used, the upper part 122b of the lift column 114, the arm part 116 and the lifting mechanism 118 can be easily removed, so that the overall size of the transfer assist chair 10 can be reduced and the operability can be improved. can.

(Modification)
The implementation of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, in the above embodiment, an electric actuator powered by a battery is used as the first telescoping device 98 of the height adjustment mechanism 24 and the second telescoping device 142 of the lifting mechanism 118. A hydraulic cylinder powered by a hydraulic source, an air cylinder powered by compressed air, or the like may be used.

The height adjustment mechanism 24 for adjusting the height of the seat plate portion 20 may be omitted, or may be changed to another height adjustment mechanism that does not have the first telescoping device 98 . In these cases, the lift strut 114 may be fixed to the connecting base member 32 as there is no need to provide the first telescoping device 98 below the lift strut 114 . Also, the lift post 114 may be secured to at least one selected from the handle portion 42 , the handrail portion 44 and the connecting base member 32 . Furthermore, in the above embodiment, the axial center of the first telescoping device 98, that is, the axial center of the telescopic rod 104, is arranged directly below the lift column 114, but this axial center is shifted from directly below the lift column 114. may be placed in position.

Further, in the above-described embodiment, as a system of the lifting mechanism 118 that constitutes the lift section 26, a system of pulling up the belts 112a to 112d connected to the support (sling sheet) 110 by the arm section 116 is adopted. Alternatively, a method of winding the wire connected to the support (sling sheet) 110 with a winding device may be employed.

Furthermore, in the above embodiment, the support (sling sheet) 110 is suspended by the four belts 112a to 112d, but the method for suspending the support (sling sheet) 110 is not limited to this. For example, a method of suspending with two belts may be adopted, or a method of suspending with a belt for supporting the head of the care recipient X in addition to the four belts 112a to 112d. may be Furthermore, although each of the pair of belts 112a, 112c and the other pair of belts 112b, 112d are formed continuously in the above embodiment, they may be formed independently.

DESCRIPTION OF SYMBOLS 10... Transfer assistance chair, 12... Base frame 12, 18a-18d... Wheel, 20... Seat plate part, 22... Seat plate support frame, 24... Height adjustment mechanism, 26... Lift part, 28... Left base member, 30 ... right base member, 32 ... connection base member, 34 ... left support, 36 ... right support, 42 ... handle, 66 ... left rotation frame, 68 ... right rotation frame, 114 ... lift support, 116 ... arm, 118... Lifting mechanism.

In order to achieve the above object, the transfer assist chair according to the present invention is characterized by a base frame to be placed on the floor, a plurality of wheels for moving the base frame on the floor, and a chair on which the care-receiver sits. A front and rear view of a cared person seated on the seat plate, comprising a plate-shaped seat plate, a seat plate support frame for supporting the seat plate, and a lift portion for lifting the body of the care receiver. When the left-right direction is taken as a reference, the base frame includes a rod-shaped left base member and a right base member that are spaced apart from each other in the left-right direction so as to extend in the front-rear direction along the floor surface; A left strut provided to extend vertically at the front end of the left base member, a right strut provided to extend vertically at the front end of the right base member, and the left strut and the right strut. A rod-shaped handle portion configured to be held by a caregiver's hand, and a rod-shaped handle portion that is bridged between the left support and the right support, and is spaced downward from the handle and bridged between the left support and the right support. and a rod-shaped handrail configured to be gripped by the hand of the care receiver seated on the board, wherein the seat board support frame is secured between the left base member and the right base member. The left strut and the right strut are rotated so as to selectively take a first state in which they are close to each other above the space and a second state in which they are separated from each other by opening in the left-right direction from the first state. a left pivoting frame and a right pivoting frame removably attached to each other, the seat plate portion being attached to the left pivoting frame and forming a left portion of the seat plate portion in the first state; and a right seat plate piece attached to the right rotating frame and constituting the right side portion of the seat plate portion in the first state, and the lift portion is positioned at the center of the front portion of the base frame in the left-right direction. and a lift strut provided to extend in the vertical direction on the seat plate portion, and a lift strut provided to extend rearward from the upper end of the lift strut above the care recipient seated on the seat plate portion, so that the care recipient's body can be viewed from directly above. It has a rod-shaped arm for suspension and an elevating mechanism configured to lift the body of the care-receiver suspended by the arm in a vertical direction .

Another feature of the transfer chair according to the present invention is that the lift strut is fixed to both the handle portion and the handrail portion.

Claims (10)

a base frame placed on the floor;
a plurality of wheels for moving the foundation frame on the floor;
a plate-shaped seat plate on which the care recipient sits;
a seat plate support frame that supports the seat plate portion;
and a lift unit for lifting the body of the person being cared for,
When the front, back, left, and right directions as seen from the cared person seated on the seat plate are used as a reference,
The base frame includes a rod-shaped left base member and a right base member that are spaced apart from each other in the left-right direction so as to extend in the front-rear direction along the floor surface, and a rod-shaped base member that is vertically attached to the front end of the left base member. a left support provided to extend to the right base member; a right support provided to extend vertically at the front end of the right base member; a rod-shaped handle configured to be held by hand;
The seat plate support frame has a first state in which the seat plate support frame is close to each other above the space secured between the left base member and the right side base member, and a second state in which the seat plate support frame is opened in the left-right direction from the first state and separated from each other. a left pivoting frame and a right pivoting frame rotatably attached to the left support and the right support, respectively, so as to selectively take a state;
The seat plate portion is attached to a left-side rotating frame, is attached to a left-side seat plate piece forming a left-side portion of the seat-plate portion in the first state, and is attached to a right-side rotating frame, and is attached to the seat plate portion in the first state. a right seat plate piece forming a right portion of the plate portion;
The lift section includes a lift column extending vertically at the center of the front portion of the base frame in the left-right direction, and a lift column extending rearward from the upper end of the lift column to suspend the body of the care recipient. A transfer assist chair comprising a rod-shaped arm for lowering and an elevating mechanism for elevating the body of a care-receiver suspended by the arm. 2. The transfer chair of claim 1, wherein the lift strut is secured to the handle portion. The base frame has a rod-shaped handrail section that is spaced downward from the handle section and spans between the left support column and the right support column and is configured to be grasped by the care recipient's hand,
3. A transfer chair according to claim 1 or 2, wherein the lift strut is fixed to both the handle portion and the handrail portion. A left movable part and a right movable part provided at the lower ends of the left support and the right support, respectively, for moving the left support and the right support in the vertical direction; 4. The transfer according to any one of claims 1 to 3, further comprising a height adjustment mechanism having a first telescoping device configured to vertically move the left support column and the right support column by extending and contracting. auxiliary chair. The base frame has a rod-shaped connection base member that connects the front end of the left base member and the front end of the right base member,
The first expansion/contraction device is configured such that its axial center is arranged between the upper surface of the central portion in the left-right direction of the connection base member and the lower end surface of the lift support,
5. The transfer assist chair according to claim 4, wherein an upward force is input from said first telescoping device to said lift strut when said first telescoping device is extended. The elevating mechanism includes a rotary connection portion that rotatably connects the front end portion of the arm portion to the upper end portion of the lift column, and a portion of the lift column that has one end spaced downward from the rotary connection portion. and the other end is attached to a portion of the arm portion spaced rearward from the rotational connection portion, and is extended and contracted by power applied from a second power source to change the inclination angle of the arm portion. 6. A transfer chair as claimed in any one of claims 1 to 5, having a second telescoping device configured to allow the seat to move. a left wheel mounting portion and a right wheel mounting portion protruding forward from the left base member and the right base member, respectively;
7. The transfer assist chair according to any one of claims 1 to 6, wherein the wheel is attached to each of the left wheel attachment portion and the right wheel attachment portion. 8. The transfer assist chair according to claim 7, wherein a plate-like footrest for placing the care-receiver's feet is bridged between the left wheel mounting portion and the right wheel mounting portion. 9. The space secured below the seat plate portion according to any one of claims 1 to 8, wherein the space is opened rearward so as to receive a bed used by the care recipient from behind. Transfer chair. 10. The transfer assisting chair according to any one of claims 1 to 9, wherein said lift column is configured to be vertically divisible above said handle portion.

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