JP2024051340A - Transfer assisting device - Google Patents

Abstract

To provide a transfer assisting device which transfers a user by rotating a pedestal and can secure a prescribed movement amount that enables stable transfer of the user while making the device compact.SOLUTION: A transfer assisting device comprises: a base part 2; a pedestal 3 which can rotate around a rotational axis X and on which feet of a user can be placed; and a support part which supports the user on the pedestal 3. The pedestal 3 includes a first placement region 31a and a second placement region 32b. The peripheral edge of the pedestal 3 includes a pair of side edge parts E1, E2, a front end part E3 and a rear end part E4. The length L1 from the rotational axis X to a line LN2 connecting rear side portions in the second direction D2 of the first placement region 31a and the second placement region 31b of the rear end part E4 is longer than the length L2 from the rotational axis X to the side edge parts E1, E2.SELECTED DRAWING: Figure 10

Description

The present invention relates to a transfer assistance device.

A variety of transfer assistance devices are used to enable people (hereafter referred to as "care recipients") who have difficulty standing up on their own due to old age or illness to move (hereafter referred to as "transfer") between wheelchairs, beds, toilet seats, shower chairs in the bathroom, seats of bathing support devices, sofas, vehicle seats, etc.

For example, Patent Document 1 discloses a rotating transfer aid that can transfer a user from a pre-transfer position to a transfer destination position by rotating the base on which the user stands. This rotating transfer aid rotates a circular turntable (base) with a ring-shaped rotating frame relative to a circular base member, transferring the user with the center of the circular turntable as the rotation axis.

JP 2018-68878 A

In the device of Patent Document 1, if the rotation radius of the entire device is increased, the patient can be moved to a position farther away from the rotation center of the device at the transfer destination, but in that case, the entire device becomes larger.

The present invention aims to provide a transfer assistance device that transfers a user by rotating a base, which is compact and ensures a predetermined amount of movement that allows a stable transfer of the user.

The transfer assistance device of the present invention is a transfer assistance device that assists a user in moving from a predetermined first position to a second position, the transfer assistance device having a base that is placed on an installation surface, a pedestal that is rotatable around a rotation axis vertical to the base and on which the user's feet can be placed, and a support section that is provided on the pedestal and supports the user on the pedestal, the pedestal having a first placement area and a second placement area on which the user's feet are placed, The periphery of the includes a pair of side edges extending along a second direction perpendicular to a first direction connecting the first and second mounting areas, a front end connecting the pair of side edges on the front side in the second direction, and a rear end connecting the pair of side edges on the rear side in the second direction, and the length L1 from the rotation axis to a line connecting the rear parts of the first and second mounting areas in the second direction of the rear end is longer than the length L2 from the rotation axis to the side edges.

According to the present invention, in a transfer assistance device that transfers a user by rotating a base, it is possible to ensure a predetermined amount of movement that allows a stable transfer of the user while making the device compact.

1 is a schematic diagram showing a state in which a user being transferred by an assistant using the transfer assistance device of one embodiment of the present invention is seated on a chair in a bathroom. 2 is a schematic diagram showing a state in which a user is transferred from the state shown in FIG. 1 to the seat of a bathing support device installed in a bathtub by an assistant using a transfer assistance device of one embodiment of the present invention. FIG. 1 is a perspective view of a transfer assistance device according to an embodiment of the present invention; 4 is a perspective view of the transfer assist device of FIG. 3 as seen from a different angle. FIG. 4 is a side view of the transfer assistance device of FIG. 3 . FIG. 4 is a top view of the transfer assistance device of FIG. 3 . FIG. 4 is a bottom view of the transfer assistance device of FIG. 3 . FIG. 4 is a front view of the transfer assistance device of FIG. 3 . FIG. 4 is a rear view of the transfer assistance device of FIG. 3 . 4 is a top view of a base from which the support body and the pressing portion are removed from the transfer assistance device of FIG. 3. FIG. 1 is a schematic diagram showing a state in which a user is in a forward leaning position on the transfer assistance device. FIG. 13 is a perspective view showing a modified example of the transfer assistance device. 1 is a schematic diagram showing a state before a user assumes a forward leaning position on the transfer assistance device. FIG. 1 is a schematic diagram showing a state in which a user is in a forward leaning position on the transfer assistance device. FIG. 10A to 10C are schematic diagrams showing a process in which a user moves onto the seat of the bathing support device. 1 is a schematic diagram showing the position of the base and the position of the user's waist when the user is located in a first position in the transfer assistance device of the present embodiment. FIG. 18 is a schematic diagram showing the position of the base and the position of the user's waist when the user rotates from the state shown in FIG. 17 toward a second position. FIG. 11 is a schematic diagram showing the position of the base and the position of the user's waist when the user is located in a first position in the transfer assistance device of the reference example. FIG. 20 is a schematic diagram showing the position of the base and the position of the user's waist when the user rotates from the state shown in FIG. 19 toward a second position. FIG. 13 is a schematic diagram showing the position of the base and the position of the waist of the user when the user is located in a first position in a transfer assistance device of another reference example. FIG. 22 is a schematic diagram showing the position of the base and the position of the user's waist when the user rotates from the state shown in FIG. 21 toward a second position. FIG. 13 is a diagram showing a state in which the pedestal and base are tilted and the anti-slip portion is in contact with the installation surface. FIG.

The transfer assistance device of one embodiment of the present invention will be described below with reference to the drawings. Note that the embodiment shown below is merely an example, and the transfer assistance device of the present invention is not limited to the following embodiment.

In this specification, "perpendicular to A" and similar expressions do not only refer to a direction that is completely perpendicular to A, but also refer to a direction that is approximately perpendicular to A. In this specification, "parallel to B" and similar expressions do not only refer to a direction that is completely parallel to B, but also refer to a direction that is approximately parallel to B. In this specification, "C-shape" and similar expressions do not only refer to a perfect C-shape, but also refer to a shape that is visually reminiscent of a C-shape (approximately a C-shape).

As shown in Figs. 1 and 2, the transfer assistance device 1 of this embodiment is used to assist the user U in moving from a predetermined first position P1 to a second position P2. In this embodiment, the user U is moved from the first position P1 to the second position P2 by the assistant A using the transfer assistance device 1. The user U may move from the first position P1 to the second position P2 by himself, for example, using the edge of the bathtub BT or a handrail on the wall, without the assistance of the assistant A. In this embodiment, the user U is transferred using the transfer assistance device 1 and a support belt B (see Fig. 11) for lifting the user U by the assistant A (a set including the transfer assistance device 1 and the support belt B is called a transfer assistance tool T (see Figs. 14 to 16)), as described later. The support belt B described later does not necessarily have to be used. Therefore, when the user U is transferred, a support belt having a structure different from that described later or another support tool may be used.

In this specification, the term "user" refers to a person to be moved from the first position P1 to the second position P2 by the transfer assistance device 1. The user is not particularly limited, but may be, for example, a person (a person receiving assistance) who has difficulty standing up on his/her own due to old age, illness, temporary injury, etc. Also, in this specification, the term "assistant" refers to a person who assists the user U to move from the first position P1 to the second position P2 by the transfer assistance device 1. The assistant is not particularly limited, but may be, for example, an assistant who assists the person receiving assistance.

In this specification, the "first position" refers to a position before the user U moves to the destination position (second position) to which the user U should be moved, and also refers to a position in the preparation stage for transfer before using the transfer assistance device 1. The "second position" refers to a destination position to which the user U should be moved using the transfer assistance device 1. The first position is not particularly limited, but can be, for example, a position where the user U can be seated, such as a wheelchair or the seat of a chair located near the second position. The second position is not particularly limited, but can be, for example, a position where the user U can be seated, such as a bathing assistance device installed in the bathroom, a shower chair in the bathroom, a toilet seat, a bed, a sofa, or a vehicle seat. The first position and the second position may be the position of the user U before and after the transfer. For example, when moving the user U between a chair installed in the bathroom and a bathing support device BS (see FIG. 16) installed in the bathtub BT, as shown in FIG. 1 and FIG. 2, the first position P1 can be the seat of the chair installed in the bathroom and the second position P2 can be the seat of the bathing support device BS, or the first position can be the seat of the bathing support device BS and the second position can be the seat of the chair installed in the bathroom.

As described below, when the user U moves from the first position P1 to the second position P2, the user U moves from the first position P1 shown in FIG. 1 to a first rotation position on the base 3 of the transfer assistance device 1 (the position when the user U stands on the base 3 in the rotation position of the base 3 shown in FIG. 1). Next, the user U moves to a second rotation position (the position when the user U stands on the base 3 in the rotation position of the base 3 shown in FIG. 2) that is rotated from the first rotation position to a position corresponding to the second position P2 by the rotation of the base 3. After that, the user U moves from the second rotation position to the second position P2 (see FIG. 2).

The transfer assistance device 1 will be described below using an example in which the first position P1 is the seat of a chair installed in the bathroom (outside the bathtub BT) and the second position P2 is the seat of the bathing assistance device BS. However, the transfer assistance device 1 is not limited to the following description. The bathing assistance device BS is shown in a simplified form in Figure 16, but is a device that has a seat that rises and falls inside the bathtub BT and a drive unit (a bellows unit in Figure 16) that raises and lowers the seat, and its structure is not particularly limited.

As shown in Figures 3 to 5, the transfer assistance device 1 has a base 2 (see Figure 5) that is placed on a mounting surface FL, a pedestal 3 that can rotate around a rotation axis X in a vertical direction D3 relative to the base 2 and on which the feet of a user U can be placed, and a support part 4 that is provided on the pedestal 3 and supports the user U on the pedestal 3.

In this specification, the "vertical direction D3" refers to a direction perpendicular to the extension direction of the base 2 (in this embodiment, a direction parallel to the installation surface FL). In other words, the vertical direction D3 is a direction perpendicular to the mounting portion 31 of the base 3 (see Figures 3 to 5), and in this embodiment, it is also a direction perpendicular to the installation surface FL. In addition, in the vertical direction D3, the side of the base 2 with respect to the base 3 is called the lower side, lower side, or lower, and the side opposite the base 2 with respect to the base 3 is called the upper side, upper side, or upper side. In addition, in the horizontal direction (direction perpendicular to the vertical direction D3), the direction connecting the first mounting area 31a and the second mounting area 31b (see Figure 10) described later is called the first direction D1. In this embodiment, the first direction D1 is the left-right direction of the user U when the user U uses the transfer assistance device 1 in a normal usage method, and the first direction D1 can also be rephrased as the width direction or left-right direction of the transfer assistance device 1. In addition, among the horizontal directions, a direction perpendicular to the first direction D1 is referred to as the second direction D2. In this embodiment, the second direction D2 is a direction connecting the front and rear of the user U when the user U uses the transfer assistance device 1 in a normal manner, and the second direction D2 can also be referred to as the front-to-rear direction of the transfer assistance device 1. In the second direction D2, the front side of the user U, that is, the direction from the user U to the assistant A facing the user U, is referred to as the front, and the direction from the assistant A facing the user U to the user U is referred to as the rear. Note that the first direction D1 and the second direction D2 are directions in the base 3 of the transfer assistance device 1, and in this specification, are directions relative to a predetermined position of the base 3. In addition, in this embodiment, as described later, the support part 4 is configured to be swingable around a first swing axis Ax1 extending parallel to the base 3 (in this embodiment, parallel to the placement part 31 or the installation surface FL) as shown in FIG. 5. Among the swing directions of the support unit 4, the direction in which the angle θ (see FIG. 5) of the support unit 4 with respect to the installation surface FL increases from the inclined state of the support surface 411 (see solid line in FIG. 5) described later with respect to the base 3 is called the first swing direction D41. In this embodiment, the first swing direction D41 is the direction in which the support unit 4 approaches the user U. Among the swing directions of the support unit 4, the direction opposite to the first swing direction D41 is called the second swing direction D42. The second swing direction D42 is the direction in which the support unit 4 moves away from the user U. In this embodiment, the angle θ of the support unit 4 with respect to the installation surface FL is the angle between the installation surface FL and a plane extending the support surface 411 of the support unit 4 toward the installation surface FL, as shown in FIG. 5.

As shown in Figs. 5, 7 to 9, the base 2 is a base part of the transfer assistance device 1 that is installed on the installation surface FL (in this embodiment, the floor surface of the bathroom) and is a part that rotatably supports the pedestal 3. The pedestal 3 is attached to the base 2 so that it can rotate around the rotation axis X extending in the vertical direction D3. It is preferable that the base 2 is held stably on the installation surface FL, and the base 2 may have an anti-slip part (not shown) made of, for example, rubber, at the contact part with the installation surface FL. The shape and structure of the base 2 are not particularly limited as long as it is installed on the installation surface FL and the pedestal 3 can be attached rotatably around the rotation axis X. In this embodiment, the base 2 is a plate-like member arranged below the pedestal 3. Specifically, the base 2 is formed in a disk shape centered on the rotation axis X, as shown in Fig. 7. In this embodiment, the base 2 is spaced apart in the vertical direction D3 from the back surface (lower surface) 3b of the pedestal 3, but for example, a disk-shaped recess large enough to accommodate the base 2 may be provided on the back surface 3b of the pedestal 3, and the base 2 may be accommodated in the recess.

The pedestal 3 is attached directly or indirectly to the base 2 and is a part that rotates relative to the base 2 around a rotation axis X in the vertical direction D3. The pedestal 3 has a placement section 31 on which the feet of the user U are placed, and is configured to support the user U with the feet of the user U placed on the placement section 31. The connection structure between the pedestal 3 and the base 2 is not particularly limited as long as the pedestal 3 can rotate relative to the base 2 and can support the load due to the weight of the user U when the user U is placed on the pedestal 3. For example, a bearing member (not shown) such as a bearing is provided between the pedestal 3 and the base 2, and the pedestal 3 is configured to rotate smoothly relative to the base 2.

The placement section 31 is configured to allow at least a part (preferably the whole) of the user U's foot (from the heel to the toes) to be placed thereon. In this embodiment, the placement section 31 has a first placement area 31a and a second placement area 31b on which each of the user U's feet is placed, as shown in FIG. 10. The first placement area 31a and the second placement area 31b are spaced apart in the first direction (width direction) D1 on the upper surface of the base 3, as shown in FIG. 10, so that each of the user U's right foot and left foot can be placed thereon.

As shown in FIG. 10, the placement section 31 is provided between the first placement area 31a and the second placement area 31b in the first direction D1, and includes an assistant's foot placement area 31c on which one foot of the assistant A is placed. The assistant's foot placement area 31c allows the assistant A to stop the rotation of the pedestal 3 or to control the rotation speed of the pedestal 3 so that the rotation speed of the pedestal 3 does not become too fast, by placing the assistant A's foot on the assistant's foot placement area 31c and applying a load, as described later, the position of the base 2 and the pedestal 3 can be changed from a state in which the base 2 and the pedestal 3 are inclined with respect to the placement surface FL to a state substantially parallel to the placement surface FL (see FIG. 14 and FIG. 15).

In this embodiment, the assistant's foot rest area 31c is provided between the first placement area 31a and the second placement area 31b in the first direction D1, as shown in FIG. 10. This makes effective use of the space between the first placement area 31a and the second placement area 31b, and the feet of the user U and the assistant A can be placed on the base 3 without enlarging the base 3 (in the second direction D2). This allows the transfer assistance device 1 to be made smaller. In addition, when the feet of the user U and the assistant A are placed on the base 3, the load applied to the base 3 is well balanced. Note that the placement section 31 of the base 3 only needs to be able to place the feet of the user U, and does not necessarily have to have the assistant's foot rest area 31c.

In addition, in this embodiment, the first and second placement areas 31a and 31b, and the assistant's foot placement area 31c are at least partially separated in the first direction D1 by the support section 42 (see FIG. 4), as shown in FIG. 10. This prevents interference between the feet of the user U and the assistant A when the feet of the user U and the assistant A are placed on the placement section 31, thereby preventing injuries due to being stepped on. The detailed configuration of the base 3 will be described later.

The support unit 4 supports the user U on the pedestal 3. There are no particular limitations on the shape and structure of the support unit 4 as long as it can support the user U on the pedestal 3. In this embodiment, the support unit 4 has a support surface 411 that abuts against the shins of the user U to support the shins, as described below, and the support surface 411 is configured to be held in an inclined state at a predetermined angle with respect to the installation surface FL. By abutting against the shins of the user U, the support unit 4 is configured to support the user U in a forward-leaning position (see FIG. 12) while placed on the pedestal 3. In this embodiment, the support unit 4 has a support body 41 and a support portion 42, as shown in FIGS. 3 to 6. In addition, in this embodiment, the support unit 4 has a grip portion 43 that can be grasped by the user U.

The support column 42 is a portion that supports the support body 41 so that the support surface 411 is held in an inclined state, as described later. The support column 42 supports the support body 41 so that the user U can be held in a predetermined forward tilted position when the weight of the user U is applied to the support body 41. The shape and structure of the support column 42 are not particularly limited as long as the support body 41 can be supported. In this embodiment, the support column 42 extends from the end region of the front side in the second direction D2 of the mounting portion 31 of the base 3 at an incline toward the rear as it extends upward in the vertical direction D3, as shown in FIG. 5. In addition, the support column 42 is provided in a pair at a distance in the first direction D1, as shown in FIG. 4. In this embodiment, the support body 41 is configured to swing, as described later, and when the support body 41 swings to a predetermined position, the free ends (upper ends) of the pair of support columns 42 function as stoppers to hold the support body 41 in a predetermined position, as shown in FIG. 4 and FIG. 5. The pair of support pillars 42 are provided in the first direction D1 at positions corresponding to the first support surface 411a and the second support surface 411b described below, and more reliably support the load caused by the weight of the user U applied via the first support surface 411a and the second support surface 411b.

The pair of support pillars 42 also extend from both sides of the assistant's foot-rest area 31c in the first direction D1. As described above, the pair of support pillars 42 therefore also function as partitions that separate the assistant's foot-rest area 31c from the first and second rest areas 31a and 31b in the first direction D1. This helps prevent accidents caused by stepping on the feet when the user U or assistant A places their feet on the pedestal 3.

The grip portion 43 is gripped by the user U when he/she stands on the base 3, and prevents the user U from losing his/her posture or falling over when the base 3 rotates. The shape and structure of the grip portion 43 are not particularly limited as long as the user U can grip the grip portion 43 so as to prevent the user U from losing his/her posture or falling over when the base 3 rotates. In this embodiment, the grip portion 43 is configured by a pair of rod-shaped members protruding in the first direction D1 from the connection portion 44 connected to the support 41 on the front side of the support 41 in the second direction D2, as shown in FIG. 3 to FIG. 6. In this embodiment, the grip portion 43 is configured to swing together with the support 41. In this case, the grip portion 43 and the support 41 move together, so that when the support 41 swings, a part of the body of the user U or the assistant A is prevented from being pinched between the support 41 and the grip portion 43. The grip portion 43 may be provided separately from the support 41, for example, on the support column 42, or may be provided on a portion of the base 3 other than the support 41 or the support column 42.

The support 41 has a support surface 411, which is the part of the support section 4 that supports the shin of the user U. The shape and structure of the support 41 are not particularly limited as long as it has a support surface 411 that supports the shin of the user U. In this embodiment, the support 41 is formed in a plate shape having one surface 41a on the first swing direction D41 side and the other surface 41b on the second swing direction D42 side, as shown in Figures 3 to 5.

As shown in FIG. 5, the support surface 411 is configured to be held in an inclined state (see solid line portion) inclined at a predetermined angle with respect to the installation surface FL. As a result, as shown in FIG. 12, when the user U assumes a forward-leaning posture in which the angle between the line LN1 connecting the knees and ankles of the user U and the base 3 (the surface of the placement surface 3a that is forward in the second direction D2 from the intersection of the placement surface 3a and the line LN1) is an acute angle, the support surface 411 is configured so that the shins of the user U come into contact with the inclined support surface 411, thereby allowing the user U to maintain the forward-leaning posture.

The "forward leaning posture" is not limited to the posture of the user U shown in the figure, but as an example, the user U can be in a bent-over state with the user's head projecting forward relative to the waist with the user's shins in contact with the support surface 411 held in an inclined state. The "inclined state" of the support surface 411 is not particularly limited as long as it is inclined so as to maintain the user's forward leaning posture described above, but for example, when viewed in the first direction D1, the angle θ (see FIG. 5) between the support surface 411 and the installation surface FL can be 50° to 70°, preferably 55° to 65°.

As described above, the support surface 411 is held in an inclined state at a predetermined angle with respect to the installation surface FL, and when the user U assumes a forward leaning position, the user U's shins come into contact with the inclined support surface 411, thereby maintaining the forward leaning position of the user U, as shown in FIG. 12. Therefore, as will be described in detail later, when the user U moves from the first position P1 to the second position P2 by rotating the base 3 around the rotation axis X extending in the vertical direction D3, the user U can rotate stably with his/her weight forward. This makes it possible to stably transfer the user U with a simple configuration.

The shape and structure of the support surface 411 are not particularly limited as long as it can contact the shin of the user U so that the user U can maintain a forward leaning posture. In this embodiment, the support surface 411 is configured as one continuous surface that contacts the shin of the user U over a predetermined length in the direction in which the shin of the user U extends, as shown in Figs. 3, 6, and 8. In this case, the contact area between the support surface 411 and the shin of the user U is increased. Therefore, the reaction force applied from the support surface 411 to the shin of the user U is dispersed, and the load applied to the shin of the user U when the user U puts his/her weight on the support surface 411 is reduced. In this embodiment, the support surface 411 has a cushion part C made of a flexible material, as shown in Figs. 3 and 6, which further reduces the impact and pressure between the support surface 411 and the shin of the user U. The support surface may be divided into multiple parts that are not continuous in the direction in which the shin of the user U extends.

In this embodiment, as shown in Figs. 3, 6 and 8, the plate-shaped support 41 has, on one surface 41a, a first support surface 411a that supports one shin of the user U and a second support surface 411b that abuts against the other shin of the user U. In this embodiment, the support 41 is formed of a single plate-shaped body, and the first support surface 411a and the second support surface 411b are connected in the first direction D1 via an intermediate portion 412 in the first direction D1. Note that the first support surface and the second support surface may be formed of separate plate-shaped bodies separated by the first direction D1.

In this embodiment, as shown in FIG. 6, the support 41 protrudes in the second swing direction D42 in the area of the first support surface 411a and the second support surface 411b, and protrudes in the first swing direction D41 in the area (middle portion 412) between the first support surface 411a and the second support surface 411b. As a result, the plate-shaped support 41 has a pair of peaks M and a valley V provided between the pair of peaks M on the other surface 41b of the support 41, as shown in FIG. 6.

As shown in FIG. 6, a pair of recesses are formed on the surface (one surface 41a) of the support 41 opposite the portion where the pair of peaks M are formed, and a first support surface 411a and a second support surface 411b are formed in the pair of recesses. In this embodiment, the first support surface 411a and the second support surface 411b are curved along the curved shape around the shin and hold a part of the front part of the shin of the user U so as to envelop it. This reduces the load applied to the shin of the user U and prevents the shin of the user U from shifting in the first direction D1 when the user U leans forward. Therefore, when the base 3 rotates, the shin of the user U shifts in the first direction D1 relative to the support 41, and the user U falls off the base 3.

In this embodiment, as described above, the support part 4 is configured to be able to swing about a first swing axis Ax1 extending parallel to the base 3 from an inclined state to a first swing direction D41 in which the angle θ of the support part 4 with respect to the installation surface FL increases, as shown in FIG. 5.

The first swing axis Ax1 extends in a direction parallel to the base 3, and in this embodiment, it extends in a direction parallel to the surface of the mounting portion 31 or parallel to the installation surface FL. In this embodiment, the first swing axis Ax1 extends in a direction perpendicular to the second direction D2, that is, in the first direction D1. In this embodiment, the first swing axis Ax1 is configured by an axis member that can rotate with respect to the axis support portion 32 provided on the base 3. Also, in this embodiment, the support 41 is configured to swing via a swing arm 45 that is rotatably connected to the axis support portion 32 via an axis member, as shown in FIG. 5. In this embodiment, when the support 41 swings in the second swing direction D42 and moves to an inclined state, as shown in FIG. 5, the abutment portion 413 provided on the support 41 abuts against the stopper portion 42a, thereby maintaining the inclined state. In this embodiment, the abutment portion 413 is provided on the other surface 41b of the support 41, and the stopper portion 42a is provided on the upper end of the support portion 42. However, the abutment portion and the stopper portion may be provided in other locations as long as they abut against each other when the support 41 swings in the second swing direction D42 and can hold the support 41 in an inclined state.

In this embodiment, as shown in Figs. 3, 6 and 8, the swing arm 45 extends between the first support surface 411a and the second support surface 411b in the first direction D1 and is connected to the intermediate portion 412. In this case, the swing arm 45 does not get in the way when the user U's shin is brought into contact with the first support surface 411a and the second support surface 411b. In addition, the swing arm 45 is provided between the first support surface 411a and the second support surface 411b, and is connected to the support 41 at a position corresponding to the position where the pressing portion 5 described later is provided in the first direction D1. Therefore, as described later, when the support 41 is pressed by the pressing portion 5, the support 41 can be smoothly swung. Note that the position of the connection point (axial support portion 32) between the swing arm 45 and the base 3 is not particularly limited, but in this embodiment, it is located in the end area of the placement surface 3a on the user U side (rear side in the second direction D2).

In this embodiment, as shown in Figs. 4 to 6 and 9, the transfer assistance device 1 has a pressing part 5 pressed by assistant A on the second swing direction D42 side (in this embodiment, the other surface 41b side of the support body 41) with respect to the support part 4. As will be described in detail later, when assistant A presses the pressing part 5, a force is applied in a direction in which the support part 4 swings from an inclined state to the first swing direction D41. Therefore, the shin of the user U that contacts the support part 4 is pressed by the support part 4 toward the first swing direction D41 side (rearward in the second direction D2), and the shin of the user U swings in the first swing direction D41 together with the support part 4 with the ankle as a fulcrum. As a result, when assistant A lowers the user U from the transfer assistance device 1 at the second position P2, the position of the knee of the user U can be shifted backward in the second direction D2 by the support part 4. Therefore, the user U can sit deeply in the second position P2, which is the transfer destination.

The pressing part 5 is a part pressed by the assistant A to swing the support part 4 in the first swing direction D41. In particular, the pressing part 5 is pressed when the assistant A moves the user U from the first position P1 to the second position P2, after the user U reaches the second rotation position described above. When the pressing part 5 is pressed, the support part 4 swings from a predetermined inclination state so that the angle θ of the support part 4 with respect to the installation surface FL increases (see FIG. 16). As a result, the support part 4 presses the shins of the user U, and the position of the knees of the user U shifts a predetermined amount backward in the second direction D2, so that the user U can sit deeply in the second position P2. The amount of rotation (rotation angle) of the support part 4 from the inclined state to the first swing direction D41 is not particularly limited as long as the position of the knees of the user U is configured to shift a predetermined amount backward in the second direction D2. For example, the rotation angle of the support part 4 from the inclined state to the first swing direction D41 can be 20° to 60°, preferably 30° to 45°.

The pressing portion 5 may be pressed by assistant A when the support portion 4 swings toward the user U from the inclined state and abuts against the shins of the user U sitting in the first position P1 (e.g., perpendicular to the base 3 as shown in FIG. 14) as the user U assumes the forward leaning position shown in FIG. 12 from the inclined state and swings in the second swing direction D42 toward the inclined state (see FIG. 15) when the support portion 4 swings toward the user U from the inclined state (e.g., perpendicular to the base 3 as shown in FIG. 14) as the user U assumes the forward leaning position from the sitting state in the first position P1. This makes it possible to prevent the support portion 4 from swinging suddenly, so that the user U can safely assume the forward leaning position.

The position where the pressing portion 5 is provided is not particularly limited as long as it is a position where the pressing portion 5 can be pressed so as to swing the support portion 4 in the first swing direction D41. In this embodiment, the pressing portion 5 is disposed in a valley portion V provided between a pair of peaks M as shown in FIG. 6 and FIG. 9. This allows the force to be applied equally to the left and right shins of the user U even if the support portion 4 is pressed at one point. In addition, since the pressing portion 5 is provided in the valley portion V between a pair of peaks M in the first direction D1, it is not necessary to dispose the pressing portion 5 further forward (farther from the user U) in the second direction D2 with respect to the peaks M. Therefore, the space in the second direction D2 is saved, and the transfer assistance device 1 can be made more compact.

In this embodiment, the pressing unit 5 has a contact body 51 that contacts the knee or shin of assistant A, as shown in Figs. 4 to 6 and 9. As shown in Figs. 14 to 16, when the support unit 4 swings around the first swing axis Ax1, the posture of assistant A's knee or shin that contacts the contact body 51 changes. In this embodiment, the contact body 51 is configured to swing around the second swing axis Ax2 extending parallel to the base 3 relative to the support unit 4 (support body 41) in order to change the inclination angle of the contact body 51 in response to this change in posture (see arrow AR in Fig. 5). This allows the support unit 4 and the contact body 51 to swing independently of each other. Therefore, the contact body 51 can change the inclination angle in response to the change in posture of assistant A's knee or shin. This maintains an optimal contact state between assistant A's knee or shin and the contact body 51, making it easier for assistant A to apply force to the pressing part 5 and dispersing the load on assistant A's shin.

The second oscillation axis Ax2 extends in a direction parallel to the base 3, and in this embodiment, extends in a direction parallel to the surface of the mounting portion 31 or parallel to the installation surface FL. In this embodiment, the second oscillation axis Ax2 extends in a direction perpendicular to the second direction D2, i.e., in the first direction D1, and extends in a direction parallel to the first oscillation axis Ax1. Note that the connection structure of the abutment body 51 with the support portion 4 is not particularly limited as long as the abutment body 51 is configured to be able to oscillate with respect to the support portion 4 around the second oscillation axis Ax2. In this embodiment, as shown in FIG. 5, the pressing portion 5 has a fixed portion 52 fixed to the support body 41 (valley portion V), an extension portion 53 extending from the upper end of the fixed portion 52 toward the abutment body 51 and formed integrally with the fixed portion 52, and an elastically deformable biasing portion 54 extending between the fixed portion 52 and the abutment body 51 at the lower end side of the fixed portion 52. In this embodiment, the portion where the fixed portion 52 and the extension portion 53 intersect constitutes the second rotation axis Ax2. The portion where the fixed portion 52 and the extension portion 53 intersect is a hinge-like portion that has a predetermined rigidity and is elastically deformable, and when a force is applied to the abutting body 51, the extension portion 53 bends to change the angle with respect to the fixed portion 52, so that the extension portion 53 can swing around the second rotation axis Ax2 with respect to the fixed portion 52. When a force is applied from the assistant A to the abutting body 51 and the lower end of the abutting body 51 swings to approach the support body 41, the biasing portion 54 elastically deforms, and when the force from the assistant A to the abutting body 51 is released, the biasing force of the biasing portion 54 allows the abutting body 51 to return to its original position. Note that the abutting body 51 may be supported to be swingable by, for example, an axis member extending from the connection portion 44 in the first direction D1. In this case, the shaft member extending in the first direction D1 becomes the second oscillation axis Ax2.

The shape and structure of the abutment body 51 are not particularly limited as long as it is configured to swing around the second swing axis Ax2 relative to the support part 4 in response to changes in the posture of the knee or shin of assistant A. In this embodiment, as shown in FIG. 4 and FIG. 9, the abutment body 51 extends a predetermined length in a direction perpendicular to the second swing axis Ax2 (along the extension direction of the bottom of the valley part V) and is configured to be able to contact the shin of assistant A at a predetermined length along the extension direction of the shin. This distributes the reaction force applied from the abutment body 51 to the shin of assistant A when assistant A presses the abutment body 51 with his shin, reducing the load applied to the shin of assistant A. The abutment body 51 may have a cushion part formed of a flexible material, which further reduces the impact and pressure between the abutment body 51 and the shin of assistant A.

The position of the second oscillation axis Ax2 is not particularly limited as long as the abutment body 51 can oscillate relative to the support part 4 in response to changes in the posture of assistant A's knee or shin. In this embodiment, the second oscillation axis Ax2 is provided near the upper end of the support body 41, as shown in FIG. 5. The abutment body 51 can oscillate around the second oscillation axis Ax2 so that the upper end side of the abutment body 51 fits into the recess formed by the valley part V when the abutment body 51 is pressed by assistant A.

In addition, instead of the above-mentioned contact body 51, the pressing unit 5 may be provided with a roller 55 that contacts the knee or shin of the assistant A as shown in FIG. 13. The roller 55 is configured to rotate around the second swing axis Ax2 extending horizontally in response to a change in the posture of the knee or shin of the assistant A contacting the roller 55 when the support unit 4 swings around the first swing axis Ax1. As a result, when the roller 55 is pressed by the assistant A, the roller 55 rotates around the second swing axis Ax2, and when the posture of the knee or shin of the assistant A changes, the roller 55 can maintain contact with the knee or shin of the assistant A while rotating around the second swing axis Ax2 in response to the change in posture. As a result, a suitable contact state between the knee or shin of the assistant A and the roller 55 is maintained, making it easier for the assistant A to apply force to the pressing unit 5.

In the modified example shown in FIG. 13, the roller 55 has a recess that is concave in the center in the axial direction of the roller 55 and curved so that the outer diameter increases toward both ends in the axial direction. This increases the contact area with assistant A's knee or shin, reducing the load on assistant A's shin. The surface of the roller 55 may have a cushion portion made of a flexible material. In this case, the impact and pressure between the roller 55 and assistant A's shin are further reduced.

In addition, when assistant A moves user U from first position P1 to second position P2, support belt B shown in Figures 11 and 14 to 16 may be used to assist in temporarily lifting user U. Note that support belt B is merely a member that assists in the movement of user U, and does not necessarily have to be used.

As shown in FIG. 11, the support belt B has a lumbar support part B1 that is wrapped around the waist of the user U, and grip parts B2 that are provided on both ends of the lumbar support part B1 and are gripped by the assistant A.

The lumbar support part B1 is a part that is wrapped around the waist (including the buttocks) of the user U, as shown in Figs. 14 to 16. The shape, structure, and material of the lumbar support part B1 are not particularly limited as long as they can transmit a force to lift the waist of the user U. In this embodiment, the lumbar support part B1 is configured in a belt shape as shown in Fig. 11, but may have other shapes and structures. The lumbar support part B1 may be made of cloth or may be configured of an elastic material such as rubber.

The gripping part B2 is a part that is gripped to pull the lumbar support part B1 that is hung around the waist of the user U. The shape and structure of the gripping part B2 are not particularly limited as long as it can be gripped by the assistant A and can pull the lumbar support part B1 so as to lift up the waist of the user U.

When using the support belt B described above, as shown in Figures 14 to 16, assistant A can use the force of his or her own backward lean to slightly lift user U off the seat of a chair or the like. Therefore, assistant A can apply force to move user U while assistant A's upper body is prevented from leaning forward (close to the vertical direction D3), as shown in Figures 14 to 16. This reduces the load on assistant A's lower back, allowing user U to be easily moved from the first position P1 to the second position P2.

Next, the details of the pedestal 3 will be described. As described above, the pedestal 3 is rotatable around the rotation axis X with respect to the base 2, and is configured so that the user U's feet can be placed on it to support the user U. In this embodiment, as shown in Figures 3 to 5, the pedestal 3 has a placement surface (upper surface) 3a on the upper side in the vertical direction D3, and a first placement area 31a and a second placement area 31b are provided on the placement surface 3a (see Figure 10). The back surface (lower surface) 3b, which is the opposite side to the placement surface 3a of the pedestal 3, faces the installation surface FL in a spaced-apart state, as shown in Figure 5. The shape and structure of the pedestal 3 are not particularly limited as long as it is rotatable around the rotation axis X with respect to the base 2 and can support the user U. In this embodiment, the pedestal 3 is formed in a plate shape, but may be, for example, a flat cylindrical body having a hollow portion inside.

In this embodiment, as shown in Figs. 3 to 6, the base 3 has a protruding portion 33 protruding from the mounting surface 3a of the base 3 on the rear side in the second direction D2 of the first mounting area 31a and the second mounting area 31b. The protruding portion 33 is a portion on which the heel of the user U's foot is placed in the first mounting area 31a and the second mounting area 31b. The protruding portion 33 protrudes at a predetermined height so that the heel side of the user U's foot is higher and the toe side is lower when the user U's foot is placed in the first mounting area 31a and the second mounting area 31b (see Fig. 12). In this case, when the user U places his/her foot on the first mounting area 31a and the second mounting area 31b, the heel side becomes higher than the toes, so that the user U is likely to assume a forward-leaning posture as shown in Fig. 12. Therefore, the user U is prevented from losing balance on the base 3 and falling backward.

The shape and structure of the protrusion 33 are not particularly limited as long as it protrudes at a predetermined height so that the heel side of the user U's foot is higher and the toe side is lower when the user U's foot is placed on the first placement area 31a and the second placement area 31b. In this embodiment, the protrusion 33 is formed in a columnar shape having a predetermined width in the first direction D1 and the second direction D2. In this embodiment, as shown in FIG. 5, the protrusion 33 has an inclined surface 33a whose height decreases as it moves forward in the second direction D2 on the front side of the protrusion 33 in the second direction D2. When the protrusion 33 has an inclined surface 33a, the user U's foot is more likely to incline along the inclined surface 33a so that the toe side is lower, and the user U is more likely to be in a forward leaning position. Note that the protrusion may be provided inclined so that the height gradually decreases from the rear to the front in the second direction D2 over the entire first placement area 31a and the second placement area 31b in the second direction D2.

As shown in Figs. 3 to 5, the base 3 has a wall portion 34 extending upward from the base surface 3a in the vertical direction D3, forward in the second direction D2 of the first and second placement areas 31a and 31b. The wall portion 34 has a predetermined width in the first direction D1 and can abut against the toes of the user U's feet, preventing the user U's feet from shifting forward. This prevents the user U's feet from shifting forward and losing their posture, allowing the user U to stably transfer from the first position P1 to the second position P2. In this embodiment, the wall portion 34 is detachable from the base 3, and its position in the second direction D2 can be changed depending on the size of the user U's feet.

Furthermore, as shown in Figs. 3 to 5, the base 3 has an assistant protrusion 35 on the rear side in the second direction D2 of the assistant foot placement area 31c. As a result, when assistant A places his/her foot on the assistant foot placement area 31c, the toe side of assistant A's foot rests on the assistant protrusion 35, and assistant A's toe side becomes higher and his/her heel side becomes lower (see Figs. 14 to 16). In this case, assistant A's weight is more likely to be placed on the heel side of his/her foot, making it easier to lift user A.

In this embodiment, as shown in FIG. 10, the periphery of the base 3 has a pair of side edges E1, E2 extending along the second direction D2, a front end E3 connecting the pair of side edges E1, E2 on the forward side of the second direction D2, and a rear end E4 connecting the pair of side edges E1, E2 on the rear side of the second direction D2.

The side edges E1 and E2 are edge portions of the base 3 that extend along the second direction D2 at both ends of the first direction D1. In this embodiment, the first mounting area 31a extends in the second direction D2 along the side edge (first side edge) E1, and the second mounting area 31b extends in the second direction D2 along the side edge (second side edge) E2. In this embodiment, the side edges E1 and E2 extend linearly along the second direction D2, but the side edges E1 and E2 may be curved or may have a notch that is recessed inward from other portions.

The front end E3 is an edge portion of the base 3 that extends on the front side of the second direction D2 to connect a pair of side edges E1, E2 in the first direction D1. In this embodiment, the front end E3 is the end of the base 3 on the assistant A side, and the assistant foot placement area 31c extends from the front end E3 toward the rear end E4 (see FIG. 10). In this embodiment, the front end E3 has a portion that extends linearly in the first direction D1, but the front end E3 may be curved entirely or partially, or may have a notch that is recessed inward from other portions. In this embodiment, the front end E3 has a pair of inclined portions (curved portions) E31 that extend from the front end of the side edges E1, E2 in the first direction D1 and curve forward as it approaches the center of the front end E3, and a straight portion E32 that connects the pair of inclined portions E31 and extends linearly in the first direction D1. In this embodiment, the straight portion E32 extends perpendicular to the side edges E1 and E2.

The rear end E4 is an edge portion of the base 3 that extends rearward in the second direction D2 to connect a pair of side edges E1, E2 in the first direction D1. In this embodiment, the rear end E4 is the end of the base 3 on the user U side. In this embodiment, the rear end E4 extends in a curved manner along the first direction D1, but the rear end E4 may be provided in a straight line, or may have a notch or the like that is recessed inward from other portions.

In this embodiment, as shown in FIG. 10, the length L1 from the rotation axis X to the line LN2 connecting the rear part of the rear end E4 in the second direction D2 of the first placement area 31a and the second placement area 31b is longer than the length L2 from the rotation axis X to the side edges E1 and E2 (L1>L2). Here, the "rear part of the rear end E4 in the second direction D2 of the first placement area 31a and the second placement area 31b" can be the part of the rear end E4 that corresponds to the first placement area 31a and the second placement area 31b (a predetermined part from the side edges E1 and E2 toward the center of the rear end E4) that is located most rearward in the second direction D2. In other words, the "rear part of the rear end E4 in the second direction D2 of the first placement area 31a and the second placement area 31b" is the part of the rear end E4 that is the rear side of the heel of the foot of the user U placed on the pedestal 3. The portion of the rear end E4 that corresponds to the first placement area 31a may be, for example, a region from the rear end of one side edge E1 of the rear end E4 to 20 to 40% of the distance in the first direction D1 between the side edges E1 and E2. The portion of the rear end E4 that corresponds to the second placement area 31b may be, for example, a region from the rear end of the other side edge E2 of the rear end E4 to 20 to 40% of the distance in the first direction D1 between the side edges E1 and E2. In this embodiment, the "length L2 from the rotation axis X to the side edges E1 and E2" is the distance from the rotation axis X to the side edges E1 and E2 that extend linearly in the second direction D2. For example, if the side edges E1, E2 are not straight (for example, if they are curved or wavy), the "length L2 from the rotation axis X to the side edges E1, E2" is the length in the first direction D1 between a line LN3 (see FIG. 10) that extends in the second direction D2 passing through the rotation axis X and the portion of the side edges E1, E2 that is farthest from the line LN3 that extends in the second direction D2 passing through the rotation axis X.

As described above, in this embodiment, the length L1 from the rotation axis X to the line LN2 connecting the rear end E4 of the first placement area 31a and the second placement area 31b in the second direction D2 is longer than the length L2 from the rotation axis X to the side edges E1 and E2 (L1>L2). This makes it possible to ensure a predetermined amount of movement that allows the user U to transfer stably while making the transfer assistance device 1 compact. This point will be described in detail below with reference to Figures 17 to 22. Note that Figures 17 to 22 all use an example in which the user U transfers from the seat at the first position P1 to the seat at the second position P2. Note that in Figures 17 to 22, the position of the user U's waist (or buttocks) UW is indicated by a two-dot chain line, and parts of the user U other than the waist UW are omitted.

First, as shown in FIG. 17, when transferring the user U from the seat at the first position P1 to the seat at the second position P2, the transfer assistance device 1 may be installed on the installation surface FL with a space SP for placing the feet of the user U between the second position P2 (e.g., the wall of the bathtub BT or the legs of a chair) and the transfer assistance device 1. This space SP is a space for temporarily placing the feet of the user U when both legs of the user U are spread apart so that the feet of the user U do not interfere with the transfer assistance device 1 when the transfer assistance device 1 is placed close to the user U located at the first position P1. When this space SP is provided, the transfer assistance device 1 is installed at a position away from the second position P2 by the necessary space SP, as shown in FIG. 17.

In this way, when a space is provided between the transfer assistance device and the second position P2, the transfer assistance device 10 of the reference example shown in Figs. 19 and 20 is used. The transfer assistance device 10 of the reference example shown in Figs. 19 and 20 has a circular base 30 with a rotation axis at the center, unlike the transfer assistance device 1 of this embodiment (note that the base 30 of the reference example is shown as an example of a base with the same dimensions in the first direction D1 and the second direction D2, and may have a shape other than a circle). When the transfer assistance device 10 rotates from the first position P1 to the second position P2 around the rotation axis X, the position of the heel of the user U remains separated from the second position P2 by the space SP, as shown in Fig. 20. Therefore, the position of the waist UW of the user U shown by the two-dot chain line in Fig. 20 may not completely reach the seat surface of the second position P2 (the overlap with the seat surface of the second position P2 may be small). In this case, in order to transfer the user U to the second position P2, it is necessary to move the user U further backward (to the left in FIG. 20) in the second direction D2. Therefore, the user U must move in the second direction D2 by himself or the assistant A must assist him, which increases the effort of the user U or the assistant A. On the other hand, as shown in another reference example in FIG. 21 and FIG. 22, if the radius of the base 300 of the transfer assistance device 100 is increased, the rotation radius of the base 300 becomes large, and the waist UW of the user U can sit deeply at the second position P2 as shown in FIG. 22, but the transfer assistance device 100 becomes large, and it is not possible to secure the space SP for the user U to place his/her feet as shown in FIG. 21. In the transfer assistance device 100 shown in Figures 21 and 22, if a space SP for the user U's feet is provided as in Figure 19, the overlap of the user U's lower back UW with the seat surface in the second position P2 will be small, as in the state shown in Figure 20, and the effort required by the user U or assistant A will increase.

On the other hand, in this embodiment, as described above, the length L1 from the rotation axis X to the line LN2 connecting the rear side portion of the first placement area 31a and the second placement area 31b of the rear end E4 is longer than the length L2 from the rotation axis X to the side edges E1 and E2 (L1>L2). Therefore, when the base 3 rotates around the rotation axis X from the first position P1 to the second position P2, the heels of the user U (the rear parts of the first placement area 31a and the second placement area 31b) are positioned close to the second position P2 as shown in FIG. 18. Therefore, the waist UW of the user U overlaps more with the seat surface at the second position P2 as shown in FIG. 18 (compared to the reference example shown in FIG. 19). Therefore, it becomes easier to transfer the user U deep into the seat surface at the second position P2. Therefore, the amount of movement of the user U relative to the seat surface at the second position P2 is reduced, and the user U sits shallowly on the seat surface at the second position P2 (see FIG. 20), which reduces the risk of the user U falling over due to an unstable transfer. This reduces the amount of movement of the user U on the seat surface at the second position P2, thereby reducing the effort required by the user U or the assistant A. Furthermore, in this embodiment, the length L2 from the rotation axis X to the side edges E1 and E2 can be shortened, so the transfer assistance device 1 can be made compact in the first direction D1.

In this embodiment, as shown in FIG. 10, the rotation axis X is provided at a position where the length L3 in the second direction D2 from the rotation axis X to the rearmost part of the rear end E4 (the left end in FIG. 10) is longer than the length L4 in the second direction D2 from the rotation axis X to the frontmost part of the front end E3 (the right end in FIG. 10). That is, the rotation axis X is not provided at the center of the base 3 in the second direction D2, but is provided at a position eccentric to the front side in the second direction D2 from the center in the second direction D2. In this case, the rotation radius of the base 3 is larger than that of a transfer assistance device (e.g., the transfer assistance device 10 in FIG. 19) having a base of the same size in which the position of the rotation axis X is not eccentric, and the user U can be moved deeper in the second position P2. Furthermore, even if the rotation radius of the base 3 is increased, the length L4 from the rotation axis X to the front end E3 is shortened and the overall length of the base 3 in the second direction D2 does not increase, so the transfer assistance device 1 can be made smaller while ensuring the amount of movement of the user U. The position of the rotation axis X in the second direction D2, i.e., the lengths L3 and L4, are not particularly limited, but it is preferable that the rotation axis X be provided at a position where the length L3 is, for example, 60 to 90%, preferably 70 to 80%, of the overall length of the base 3 in the second direction D2 (length L3 + length L4).

In this embodiment, the "rearmost portion of the rear end E4" is the central portion of the rear end E4 in the first direction D1; however, if, for example, the central portion of the rear end E4 in the first direction D1 is recessed toward the rotation axis X so as to be forward in the second direction D2 than the rear portions of the first and second mounting areas 31a and 31b (line LN2 in FIG. 10), then the rearmost portion of the rear end E4 in the second direction D2 of the first and second mounting areas 31a and 31b may be the rearmost portion of the rear end E4. In addition, in this embodiment, the "forwardmost portion of the front end E3" is the central portion of the front end E3 in the first direction D1 (the straight portion E32 extending in a straight line in the first direction D1), but if, for example, the central portion of the front end E3 is recessed toward the rotation axis X relative to other portions, it may not be the central portion of the front end E3, but rather the portions on both ends of the front end E3 in the first direction D1 (for example, the portions corresponding to the inclined portions E31 in FIG. 10).

In this embodiment, the length L3 in the second direction D2 from the rotation axis X to the rearmost part of the rear end E4 is configured to be 80 to 120% (L3 = (L2 + L5) x 80 to 120%), preferably 90 to 110%, of the sum of the length L2 from the rotation axis X to the side edges E1, E2 and the width L5 in the first direction D1 of the first mounting area 31a or the second mounting area 31b. The width L5 of the first mounting area 31a or the second mounting area 31b is approximately the same as the width of the space SP shown in FIG. 17, and the width L5 can also be said to be the width of the space SP (see FIG. 10). In this case, as shown in FIGS. 17 and 18, the total length of the length L2 from the rotation axis X of the base 3 to the side edges E1, E2 and the width L5 of the space SP is approximately the same as the length L3 from the rotation axis X to the rearmost part of the rear end E4. Therefore, in the transfer assistance device 1 installed in consideration of the space SP for placing the feet of the user U, when the base 3 rotates from the first position P1 to the second position P2, the gap between the rear end E4 of the base 3 and the second position P2 becomes smaller. Therefore, while securing the minimum space SP for placing the feet of the user U, the transfer assistance device 1 can be made compact, and the rear end E4 of the base 3 can be brought closer to the second position P2, allowing the user U to sit deeper. The width L5 of the first placement area 31a or the second placement area 31b (width of the space SP) can be set to a size according to the average foot width of the user U, and is not particularly limited. For example, the width L5 of the first placement area 31a or the second placement area 31b (width of the space SP) can be set to 70 to 120 mm, preferably 80 to 100 mm.

The base 3 has a non-slip portion 36 that suppresses the rotation of the base 3 in the rear end region 3c (see FIG. 7) on the rear side of the back surface 3b opposite to the placement surface 3a on which the user U's feet are placed (see FIGS. 5, 7, 8, and 23). The non-slip portion 36 suppresses the rotation of the base 3 by being pressed against the installation surface FL or the base 2 due to the load applied to the base 3. As a result, when a load is applied to the base 3 by the user U, the assistant A, etc., the rotation of the base 3 is suppressed by the non-slip portion 36, so that the user U can stand on the base 3 with confidence. The rear end region 3c may be a region of the back surface 3b of the base 3 from the center to the rear in the second direction D2, and may be, for example, within a predetermined range in the second direction D2 from the rear end E4 (for example, within 1/3, preferably within 1/5 of the total length of the base 3 in the second direction D2).

The shape and structure of the anti-slip portion 36 are not particularly limited as long as the rotation of the base 3 can be suppressed by being pressed against the installation surface FL or the base 2. The anti-slip portion 36 is made of a material that can prevent slipping, such as rubber, at the contact portion with the installation surface FL or the base 2. In this embodiment, the anti-slip portion 36 includes a shaft portion 36a protruding from the back surface 3b of the base 3 and a contact portion 36b that can contact the installation surface FL, as shown in Figs. 5, 8, and 23. In addition, the number of anti-slip portions 36 is not particularly limited, but in this embodiment, a plurality of anti-slip portions 36 are provided along the rear end E4, as shown in Fig. 7. Specifically, the anti-slip portions 36 are provided (two) on the rear end side of the first placement area 31a, and (two) on the rear end side of the second placement area 31b. This makes it easier to suppress the rotation of the base 3 when feet are placed on the first placement area 31a and the second placement area 31b. In this embodiment, the anti-slip portion 36 is provided separately from the base 3, but it may be provided integrally with the base 3, for example, by thickening the rear end region of the base 3 partially or entirely.

7, in this embodiment, the rear end 21 of the base 2 in the second direction D2 is located closer to the rotation axis X in the second direction D2 than the rear end E4 of the pedestal 3. The pedestal 3 and the base 2 are configured to tilt with the rear end 21 of the base 2 as a fulcrum due to a load applied to the pedestal 3 (by the user U or the assistant A, etc.) so that the rear end E4 of the pedestal 3 approaches the installation surface FL (see FIGS. 14 and 23). In this way, when the pedestal 3 and the base 2 tilt, the anti-slip part 36 is pressed against the installation surface FL. As a result, in a situation where the user U is uneasy if the pedestal 3 rotates, such as when the user U places only his/her feet on the pedestal 3 and then stands on the pedestal 3 from the seat surface at the first position P1, the rotation of the pedestal 3 can be suppressed without any special operation by the user U or the assistant A. Therefore, even if assistant A is not present or if assistant A forgets to take action to prevent the rotation, the rotation of the pedestal 3 is suppressed by the anti-slip portion 36. Therefore, the user U can stand on the pedestal 3 with peace of mind. In this embodiment, the anti-slip portion 36 is configured so that the pedestal 3 tilts together with the base 2 and contacts the installation surface FL, but for example, the pedestal 3 may be configured to tilt relative to the base 2, so that when a load is applied to the pedestal 3, the pedestal 3 tilts relative to the base 2, causing the anti-slip portion to be pressed against the upper surface of the base 2, suppressing the rotation of the pedestal 3.

In this embodiment, in an unloaded state in which the user U is not on the pedestal 3, the anti-slip portion 36 is provided so as to be spaced apart from the installation surface FL, as shown in FIG. 5. Specifically, as shown in FIG. 5, the distance in the extension direction of the rotation axis X (vertical direction D3 in this embodiment) from the reference surface of the pedestal 3 (e.g., the back surface 3b of the pedestal 3) to the tip (lower end) of the anti-slip portion 36 is shorter than the distance in the extension direction of the rotation axis X from the reference surface of the pedestal 3 (e.g., the back surface 3b of the pedestal 3) to the lower surface of the base 2 that contacts the installation surface FL. As a result, in an unloaded state of the pedestal 3, the anti-slip portion 36 does not contact the installation surface FL, and the pedestal 3 is not braked. Therefore, the pedestal 3 can be easily rotated, for example, when the transfer assistance device 1 is installed on the installation surface FL and the rotation position of the pedestal 3 is adjusted before the user U places his/her foot on the pedestal 3. After adjusting the rotational position of the base 3, when the user U places his/her feet on the first placement area 31a and the second placement area 31b, the base 3 and the base 2 tilt as shown in FIG. 23, and the anti-slip portion 36 comes into contact with the installation surface FL, thereby preventing the base 3 from rotating. The "reference surface" of the base 3 can be, for example, the placement surface 3a (upper surface) of the base 3 or the back surface 3b (lower surface) of the base 3. If the placement surface 3a or back surface 3b of the base 3 is not flat, it can be a virtual surface perpendicular to the rotation axis X passing through one point on the placement surface 3a or back surface 3b.

In this embodiment, as shown in Figures 12 and 15, when the user U leans forward on the pedestal 3, the pedestal 3 and the base 2 become substantially parallel to the installation surface FL, and the anti-slip portion 36 moves away from the installation surface FL. In this manner, when the user U leans forward and the pedestal 3 is ready to rotate, the brake applied to the rotation of the pedestal 3 by the anti-slip portion 36 is released. Therefore, after the user U leans forward on the pedestal 3, the pedestal 3 can be smoothly rotated from the first position P1 to the second position P2. In particular, in this embodiment, as described above, the support surface 411 of the support unit 4 is configured to be held in an inclined state inclined at a predetermined inclination angle with respect to the installation surface FL, and the support surface 411 is configured so that when the user U assumes a forward-leaning posture in which the angle between the line LN1 connecting the knees and ankles of the user U and the placement unit 31 is an acute angle, the shins of the user U come into contact with the inclined support surface 411, thereby allowing the user U to maintain the forward-leaning posture. In this way, the support surface 411 of the support unit 4 causes the user U to assume a forward-leaning posture, and the center of gravity of the user U moves from the rear side to the front side in the second direction D2 to a position close to the rotation axis X. As a result, the pedestal 3 and the base 2 tend to move from an inclined state (see FIG. 14) to a state approximately parallel to the installation surface FL (see FIG. 15), making it easy to release the brake by the anti-slip part 36.

In this embodiment, as described above, the rotation axis X is provided at a position where the length L3 is longer than the length L4 as shown in FIG. 10. The rear end 21 of the base 2 is located closer to the rotation axis X than the rear end E4 of the pedestal 3, and the pedestal 3 and the base 2 are configured so that the rear end E4 of the pedestal 3 approaches the installation surface FL with the rear end 21 of the base 2 as a fulcrum due to the load applied to the pedestal 3. In this way, the rotation axis X is provided at a position eccentric to the front side in the second direction D2, and the rear end E4 side of the pedestal 3 protrudes rearward in the second direction D2 relative to the base 2 (see the rear end region 3c in FIG. 7), so that when the user U places his/her feet on the pedestal 3, the pedestal 3 is more likely to tilt with the rear end 21 of the base 2 as a fulcrum, as shown in FIG. 23. Therefore, even if the user U does not put his/her entire body weight on the platform, by simply placing his/her feet on the platform 3, the platform 3 and base 2 will tilt, and the anti-slip portion 36 can easily prevent the platform 3 from rotating.

In this embodiment, the anti-slip portion 36 is spaced apart from the installation surface FL when the base 3 is in an unloaded state, but the anti-slip portion may be configured to contact the installation surface FL or the base 2 when in an unloaded state, and when a load is applied to the base 3, the anti-slip portion is pressed against the installation surface FL or the base 2, increasing the braking force and suppressing the rotation of the base 3.

Next, with reference to the drawings, a method of using the transfer assistance device 1 of this embodiment will be described using an example of transferring from a chair in the bathroom to the seat of the bathing assistance device BS. Note that the following description is merely an example, and the transfer assistance device 1 is not limited to the following description. Also, in the following description, actions performed by assistant A may be performed by user U if it is possible for user U to perform them.

First, in order to transfer a person being assisted (user U, hereinafter also referred to as the person being assisted U) from a chair in the bathroom (first position P1, hereinafter also referred to as chair P1) to the seat of the bathing support device BS (second position P2, hereinafter also referred to as seat P2), the caregiver (assistant A, hereinafter also referred to as caregiver A) places the transfer assistance device 1 in front of the chair P1 on which the person being assisted U is seated (on the bathroom floor) (see FIG. 1). Specifically, as shown in FIG. 1, the transfer assistance device 1 is placed so that the support surface 411 of the transfer assistance device 1 faces the person being assisted U. At this time, in order to secure a space SP (see FIG. 17) between the transfer assistance device 1 and the second position P2 for the feet of the person being assisted U, the transfer assistance device 1 is installed slightly away from the wall of the bathtub BT. In this embodiment, the seat surface P2 of the bathing support device BS is rotated by the transfer assistance device 1 by approximately 90° around the rotation axis X in the vertical direction D3 relative to the chair P1 in the bathroom, but the angle between the first position P1 and the second position P2 can be any angle around the rotation axis X.

When the transfer assistance device 1 is installed, both feet of the person being assisted U are placed in the space SP on the side of the first and second placement areas 31a and 31b of the base 3, and then the feet of the person being assisted U are placed on the first and second placement areas 31a and 31b (note that the feet of the person being assisted U may be placed directly on the first and second placement areas 31a and 31b without moving them to the space SP). Next, in order to make the person being assisted U lean forward, the assistant A uses the support belt B to pull the person being assisted U forward while both feet of the person being assisted U are placed on the first and second placement areas 31a and 31b (see Figs. 14 and 15). In the process of leaning forward, the base 3 and the base 2 are inclined relative to the placement surface FL due to the load of the feet of the person being assisted U, as shown in Fig. 14, and the anti-slip part 36 is in contact with the placement surface FL. This allows the person being assisted U to stably change his/her posture to a forward leaning posture. When the person being assisted U is in a forward leaning posture, the caregiver A may further stabilize the base 3 by braking the base 3 by contacting the heel of the person being assisted A with the bathroom floor (installation surface FL). The caregiver A uses the support belt B to pull up the person being assisted U, and the person being assisted U moves his/her upper body forward (or the caregiver A moves the upper body of the person being assisted U forward), so that the person being assisted U is in a forward leaning posture as shown in FIG. 12. More specifically, when the person being assisted U is in a forward leaning posture, the caregiver A contacts the support surface 411 of the support part 4 with the shin of the person being assisted U, and presses the knee or shin of the caregiver A against the pressing part 5, as shown in FIG. 14. In this state, caregiver A can lift up person U without bending over by pulling support belt B around the waist of person U and putting his/her weight behind person A. As shown in FIG. 12, if person U can move from chair P1 to base 3 by himself/herself, person U may move to base 3 by himself/herself and assume a forward leaning position.

In addition, when the person being assisted U is placed in a forward-leaning position, the shins of the person being assisted U that come into contact with the support surface 411 are tilted so that the angle θ between the support surface 411 and the installation surface FL becomes smaller. At this time, the caregiver A applies force to the pressing part 5 toward the person being assisted U, gradually tilting the support 41 while adjusting the tilting speed of the support 41, thereby preventing the support 41 from suddenly swinging toward the tilted state.

When the support 41 swings a predetermined amount in the second swing direction D42, as shown in FIG. 12, the abutment portion 413 of the support 41 and the stopper portion 42a of the support portion 42 abut against each other, so that the support 41 stops and is held in an inclined state. As a result, the shins of the person being assisted U, which abut against the support surface 411 of the support 41, are also held in a predetermined inclined state. The person being assisted U grasps the grip portion 43 with both hands and moves his/her upper body so that his/her head is forward, so that the person being assisted U assumes a forward-leaning posture as shown in FIG. 12. In this way, the person being assisted U is held in a forward-leaning posture by the support surface 411 of the support portion 4, so that the person being assisted U can stably maintain a forward-leaning posture before rotating the base 3, and can also stably maintain a forward-leaning posture when rotating the base 3. In addition, the center of gravity of the person being assisted U approaches the center of rotation (rotation axis X) of the base 3 by maintaining the person being assisted U in a forward-leaning posture. This stabilizes the rotation of the base 3 around the rotation axis X, and allows the base 3 to rotate smoothly. In addition, since the transfer assistance device 1 does not have any other members above the support 41 (or the pressing part 5) in the vertical direction D3, there are no members above the knees that get in the way when the person being assisted U leans forward. Therefore, the transfer assistance device 1 of this embodiment can easily make the person being assisted U lean forward, and can be configured compactly in the vertical direction D3. Furthermore, by bringing the center of gravity of the person being assisted U closer to the base 3, it becomes possible for the shins of the person being assisted U to support the weight of the caregiver A. Furthermore, the lumbar support part B1 can be pulled around the knee joint of the person being assisted A, and the load when lifting the person being assisted U from the seat of the chair P1 is reduced by the principle of leverage, so the caregiver A can easily lift the person being assisted U. Therefore, the burden on the caregiver A can be reduced. When the person being assisted U leans forward, as shown in FIG. 15, the pedestal 3 and base 2 become approximately parallel to the installation surface FL, the anti-slip portion 36 moves away from the installation surface FL, and the brake of the pedestal 3 is released.

Next, with the person being assisted U in a forward-leaning position, the base 3 is rotated around the rotation axis X in the vertical direction D3. More specifically, the caregiver A places one foot on the assistant's footrest area 31c (see FIG. 10) of the base 3 and the other foot on the bathroom floor (see FIG. 15), and rotates the base 3 around the rotation axis X. When the caregiver A rotates the base 3 from the first rotation position corresponding to the position of the chair P1 to the second rotation position corresponding to the position of the seat surface P2 of the bathing support device BS, the caregiver A brings the heel portion exposed on the outside of the base 3 into contact with the bathroom floor (installation surface FL), braking the rotation of the base 3 and stopping the base 3.

After the caregiver A rotates the base 3 to the second rotation position, the caregiver A moves the person being assisted U toward the seat surface P2 of the bathing support device BS. If the person being assisted U can move from the base 3 to the seat surface P2 by himself, the person being assisted U may move to the seat surface P2 by himself. When the person being assisted U is moved from the base 3 to the seat surface P2 by the caregiver A, the person being assisted U is lifted up using the support belt B and lowered onto the seat surface P2 of the bathing support device BS. In this embodiment, as described above, the length L1 from the rotation axis X to the line LN2 connecting the rear side portions of the first placement area 31a and the second placement area 31b of the rear end E4 is longer than the length L2 from the rotation axis X to the side edges E1 and E2 (L1>L2). Therefore, when the base 3 rotates from the seat P1 to the seat P2 around the rotation axis X, the heel position of the person being assisted U (the position of the rear part of the first placement area 31a and the second placement area 31b) is positioned close to the seat P2 as shown in FIG. 18. Therefore, as shown in FIG. 18, the waist UW of the person being assisted U overlaps the seat P2 to a large extent, making it easy to transfer the person being assisted U deep into the seat P2. In addition, when the person being assisted U transfers from the base 3 to the seat P2, the center of gravity of the person being assisted U in a forward leaning position moves backward, so that the load applied to the rear end side of the base 3 increases. As a result, the anti-slip part 36 is pressed against the installation surface FL or the base 2, and the rotation of the base 3 can be suppressed. Therefore, the person being assisted U can transfer to the seat of the seat P2 in a stable state.

16, the knee or shin of the caregiver A presses the pressing part 5 toward the assisted person U (first swing direction D41) in order to move the assisted person U further backward from the state shown by the two-dot chain line in FIG. 16. When the pressing part 5 is pressed toward the assisted person U (first swing direction D41), the support 41 rotates around the first swing axis Ax1 and swings in the first swing direction D41, as shown in FIG. 16. When the support 41 swings in the first swing direction D41 by a predetermined angle, the part below the knee of the assisted person U is pressed by the support 41, as shown in FIG. 16, and rotates with the ankle of the assisted person U as a fulcrum. As a result, the position of the knee of the assisted person U shifts a predetermined amount backward (left side in FIG. 16) from the position shown by the two-dot chain line in FIG. 16 to the position shown by the solid line in FIG. When the knees of the person being assisted U shift backward, the position of the person being assisted U's waist (buttocks) also shifts backward accordingly. This allows the person being assisted U to sit further back on the seat surface P2 of the bathing support device BS. At this time, if the support body 41 is swung in the first swing direction D41 while the support belt B is used to lift the waist of the person being assisted U from the seat surface P2, the support body 41 can be swung even with a small force applied to the pressing portion 5, making it easier for the person being assisted U to sit further back.

In addition, in this embodiment, the caregiver A can move his/her knees and shins to allow the person being assisted U to sit deeply, so the caregiver A does not need to lift the person being assisted U upwards while bending his/her waist. Specifically, as shown in FIG. 16, the caregiver A, with his/her upper body extended in the vertical direction D3, bends the knee of the leg resting on the base 3 to press the pressing portion 5 and swing the support body 41 in the first swinging direction D41, allowing the person being assisted U to sit deeply. This greatly reduces the burden on the caregiver A's waist.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. Note that the above embodiment mainly describes an invention having the following configuration.

(1) A transfer assistance device that assists a user in moving from a predetermined first position to a second position, the transfer assistance device comprising:
A base that is installed on an installation surface;
a base that can rotate around a rotation axis vertical to the base and on which the user's feet can be placed;
a support portion provided on the base and configured to support the user on the base,
the base has a first placement area and a second placement area on which the user's feet are placed,
a peripheral edge of the base includes a pair of side edges extending along a second direction perpendicular to a first direction connecting the first mounting area and the second mounting area, a front end portion connecting the pair of side edges on a front side in the second direction, and a rear end portion connecting the pair of side edges on a rear side in the second direction,
a length L1 from the rotation axis to a line connecting the rear side portions of the first placement area and the second placement area in the second direction of the rear end portion is longer than a length L2 from the rotation axis to the side edge portion;
Transfer aids.

(2) The transfer assistance device described in (1), in which the rotation shaft is located at a position such that the length L3 in the second direction from the rotation shaft to the rearmost part of the rear end is longer than the length L4 in the second direction from the rotation shaft to the frontmost part of the front end.

(3) The base has a non-slip portion that suppresses rotation of the base in a rear end region that is on the rear side in the second direction on a back surface that is opposite to the placement surface on which the user's feet are placed,
The transfer assistance device according to (1) or (2), wherein the anti-slip portion is pressed against the installation surface or the base by a load applied to the base, thereby suppressing rotation of the base.

(4) A rear end of the base in the second direction is located closer to the rotation shaft in the second direction than a rear end of the pedestal,
the pedestal and the base are configured such that a rear end of the pedestal is inclined toward the installation surface with a rear end of the base as a fulcrum due to a load applied to the pedestal,
The transfer assistance device according to any one of (1) to (3), wherein the anti-slip portion is pressed against the installation surface when the pedestal and the base are tilted.

(5) In a no-load state in which the user is not standing on the base, the anti-slip portion is provided so as to be spaced apart from the installation surface,
When the user places his/her feet on the first placement area and the second placement area, the pedestal and the base are inclined, and the anti-slip portion comes into contact with the installation surface,
The transfer assistance device is configured so that, when the user leans forward on the pedestal, the pedestal and the base are substantially parallel to the installation surface, and the anti-slip portion is separated from the installation surface.
A transfer assistance device according to any one of (1) to (4).

(6) The support portion has a support surface that contacts the shin of the user to support the shin,
The support surface is configured to be held in an inclined state at a predetermined inclination angle with respect to the installation surface,
The support surface is configured so that when the user takes a forward leaning posture such that an angle between a line connecting the user's knees and ankles and the base is an acute angle, the user's shins come into contact with the support surface in the inclined state, thereby allowing the user to maintain the forward leaning posture.
A transfer assistance device according to any one of (1) to (5).

(7) The support part is configured to be swingable with respect to the base from the inclined state to a first swing direction in which an angle of the support part with respect to the installation surface increases, the first swing axis extending parallel to the base,
The transfer assistance device described in any one of (1) to (6) has a pressing portion that is pressed by an assistant assisting the user on the second swing direction side, which is opposite to the first swing direction, relative to the support portion.

(8) A transfer assistance device according to any one of (1) to (7), in which the base has a protruding portion protruding from the mounting surface of the base on the rear side in the second direction of the first mounting area and the second mounting area.

(9) A transfer assistance device according to any one of (1) to (8), in which the distance in the extension direction of the rotation axis from the reference surface of the base to the tip of the anti-slip portion is shorter than the distance in the extension direction of the rotation axis from the reference surface of the base to the lower surface of the base that contacts the installation surface.

1, 10, 100 Transfer assistance device 2 Base 21 Rear end 3, 30, 300 Base 3a Placement surface 3b Back surface 3c Rear end region 31 Placement portion 31a First placement region 31b Second placement region 31c Assistant's foot placement region 32 Axle support portion 33 Protruding portion 33a Inclined surface 34 Wall portion 35 Assistant's protruding portion 36 Anti-slip portion 36a Axle portion 36b Contact portion 4 Support portion 41 Support body 41a One surface 41b Other surface 411 Support surface 411a First support surface 411b Second support surface 412 Middle portion 413 Contact portion 42 Support portion 42a Stopper portion 43 Grip portion 44 Connection portion 45 Swing arm 5 Pressing portion 51 Contact body 52 Fixed portion 53 Extension portion 54 Pressing portion 55 Roller A Assistant (caregiver)
Ax1 First oscillation axis Ax2 Second oscillation axis B Support belt B1 Lumbar support section B2 Grip section BS Bathing assistance device BT Bathtub C Cushion section D1 First direction D2 Second direction D3 Vertical direction D41 First oscillation direction D42 Second oscillation direction E1, E2 Side edge section E3 Front end section E31 Inclined section E32 Straight section E4 Rear end section FL Installation surface L1 Length from the rotation axis to a line connecting the rear end section of the first placement area and the second placement area in the second direction L2 Length from the rotation axis to the side edge section L3 Length in the second direction from the rotation axis to the rearmost section of the rear end section L4 Length in the second direction from the rotation axis to the frontmost section of the front end section L5 Width in the first direction of the first placement area or the second placement area (width of the space)
LN1: Line connecting the knee and ankle of the user LN2: Line connecting the rear side portions of the first placement area and the second placement area in the second direction LN3: Line extending in the second direction passing through the rotation axis M: Mountain portion T: Transfer aid U: User (person being assisted)
UW User's lower back P1 First position (chair)
P2 Second position (seat)
SP Space for placing the user's feet V Valley X Rotation axis θ Angle of the support part with respect to the installation surface

Claims (9)

A transfer assistance device that assists a user in moving from a predetermined first position to a second position, the transfer assistance device comprising:
A base that is installed on an installation surface;
a base that can rotate around a rotation axis vertical to the base and on which the user's feet can be placed;
a support portion provided on the base and configured to support the user on the base,
the base has a first placement area and a second placement area on which the user's feet are placed,
a peripheral edge of the base includes a pair of side edges extending along a second direction perpendicular to a first direction connecting the first mounting area and the second mounting area, a front end portion connecting the pair of side edges on a front side in the second direction, and a rear end portion connecting the pair of side edges on a rear side in the second direction,
a length L1 from the rotation axis to a line connecting the rear side portions of the first placement area and the second placement area in the second direction of the rear end portion is longer than a length L2 from the rotation axis to the side edge portion;
Transfer aids. The transfer assistance device according to claim 1, wherein the rotation axis is located at a position such that the length L3 in the second direction from the rotation axis to the rearmost part of the rear end is longer than the length L4 in the second direction from the rotation axis to the frontmost part of the front end. the base has a non-slip portion that suppresses rotation of the base in a rear end region that is on the rear side in the second direction of a back surface that is opposite to the placement surface on which the user's feet are placed,
The transfer assistance device according to claim 2 , wherein the anti-slip portion is pressed against the installation surface or the base by a load applied to the pedestal, thereby suppressing rotation of the pedestal. a rear end of the base in the second direction is located closer to the rotation shaft in the second direction than a rear end of the seat,
the pedestal and the base are configured such that a rear end of the pedestal is inclined toward the installation surface with a rear end of the base as a fulcrum due to a load applied to the pedestal,
The transfer assistance device according to claim 3 , wherein the anti-slip portion is pressed against the installation surface when the pedestal and the base are tilted. In an unloaded state in which the user is not standing on the base, the anti-slip portion is provided so as to be spaced apart from the installation surface,
When the user places his/her feet on the first placement area and the second placement area, the pedestal and the base are inclined, and the anti-slip portion comes into contact with the installation surface,
The transfer assistance device is configured so that, when the user leans forward on the pedestal, the pedestal and the base are substantially parallel to the installation surface, and the anti-slip portion is separated from the installation surface.
The transfer aid according to claim 4. The support portion has a support surface that contacts the shin of the user to support the shin,
The support surface is configured to be held in an inclined state at a predetermined inclination angle with respect to the installation surface,
The support surface is configured so that when the user assumes a forward leaning posture such that an angle between a line connecting the user's knees and ankles and the base is an acute angle, the user's shins come into contact with the support surface in the inclined state, thereby enabling the user to maintain the forward leaning posture.
The transfer aid according to claim 1 . the support portion is configured to be swingable with respect to the base from the inclined state to a first swing direction in which an angle of the support portion with respect to the installation surface increases, the first swing axis extending parallel to the base;
The transfer assistance device according to claim 6, further comprising a pressing portion on a second swing direction side, opposite to the first swing direction, of the support portion, which is pressed by an assistant assisting the user. The transfer assistance device according to claim 1, wherein the base has a protrusion protruding from the base's mounting surface on the rear side of the first mounting area and the second mounting area in the second direction. The transfer assistance device according to claim 3, wherein the distance in the extension direction of the rotation axis from the reference surface of the base to the tip of the anti-slip portion is shorter than the distance in the extension direction of the rotation axis from the reference surface of the base to the lower surface of the base that contacts the installation surface.

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