JP6139008B1 - Awakening aid - Google Patents

Abstract

[PROBLEMS] To provide a rising assisting tool having a self-mechanism and other force assisting mechanism with a simple structure. A rising assist tool 1A according to an embodiment includes a user's body motion or a person other than the user in a direction to push down an upper end side of an operation handle 9 attached to at least a side support 6 to a movable seat 3 side. The lower end side of the operation handle 9 coupled to the coupling arm 8 pulls the movable sheet support member 5 and the movable sheet 3 connected to the fixed sheet 2 by the hinge portion 4 is raised from the horizontal state by the assisting operation of Assist the turning operation to shift to. [Selection] Figure 1

Description

  The present invention relates to a rising assistance tool having an auxiliary mechanism for self-power and other power.

  In particular, when a person suffering from low back pain or the like is at home, he / she wakes himself up from a supine position with bedding / sitting equipment, etc., which is very painful. In addition, when it is difficult to get up on its own, assistance from a caregiver or nurse is required.

  The care bed includes leg movement assisting means that undulates in a direction intersecting with the bed main body at a predetermined portion of the bed main body, and the leg portion of the cared person is provided by a rotating upright operation of the leg movement assisting means. It is known that by supporting the displacement movement in the lateral direction, the cared person can rise up from his back and sit on the end of the bedside on his / her side by himself (for example, Patent Literature 1).

JP 2000-166985 A

  For example, in a bed, etc., a handrail is set up around the person, and while getting caught by the handrail, the person who gets up by himself while taking time, or a caregiver / nurse etc. Relying on means such as requesting assistance.

  However, when standing up on its own, it raises its upper body on its own, which may cause handrails to be caught in an unreasonable posture, which may further hurt the affected area such as the lower back.

  In addition, when the upper body of a cared person / nurse was raised with the assistance of a carer / nurse, a considerable burden was placed on the body of the carer / nurse himself. In the worst case, the caregiver / nurse himself could have back pain.

  Moreover, in the technique as in the example of Patent Document 1, a special care bed must be purchased, and a certain amount of room space is also required for the place of placement. Therefore, there is a problem that such a bed or the like cannot be purchased when there is no extra space in the room or when a high cost cannot be paid.

  The problem to be solved by the present invention is to provide a rising assisting tool having an auxiliary mechanism of self-power and other power with a simple structure.

  In order to solve the above-described problems, a rising assistance tool according to the present invention is a rising assistance tool used as a rising assistance for a user's bedding or sitting tool. The rising assist tool can rotate between a fixed sheet positioned on the user's buttocks side, a movable sheet positioned on the back side of the user, and one end of the fixed sheet and the movable sheet. A hinge part to be connected, a movable sheet support attached to the movable sheet, a horizontal state in which the fixed sheet and the movable sheet are installed on the same installation surface, and only the movable sheet from the horizontal state is installed. An operation handle that can be operated with respect to a pivoting operation when rising from the surface, and a support structure for the fixed sheet and the operation handle, and the operation structure is formed at a substantially central portion with respect to a longitudinal direction of the operation handle. A lateral support having a pivot bearing for pivotally supporting the handle, one end pivotally connected to the movable sheet support, and A connecting arm having an end shorter than the length from the lower end of the operation handle to the axis of the rotary bearing, the end of which is rotatably connected to the lower end of the operation handle. ing. In the rising assist tool, at least the upper end side of the operation handle is pushed to the movable seat side by the user's body movement or the assistance movement of a person other than the user, and the connection arm is connected to the connection arm. A lower end portion side of the operation handle assists the rotating operation of pulling the movable sheet supporting member to shift the movable sheet from the horizontal state to the raised state.

  According to the rising assistance tool according to the present invention, it is possible to have an auxiliary mechanism of self-force and other force with a simple structure.

It is a figure which shows the structure of 1st Embodiment of the raising assistance tool which concerns on this invention. It is a perspective view of the raising assistance tool of 1st Embodiment. It is a right view of the raising assistance tool shown in FIG. It is a left view of the raising assistance tool shown in FIG. It is a top view of the raising assistance tool shown in FIG. It is a rear view of the raising assistance tool shown in FIG. It is use condition explanatory drawing of the horizontal setting state of the raising assistance tool. It is use condition explanatory drawing of the rising state of the rising assistance tool. It is use condition explanatory drawing of the rising assistance tool by an assistant. It is a figure which shows the example of a corresponding | compatible relationship between the movable angle of the operation handle of a raising assistance tool, and a raising angle. It is a figure which shows the structure of 2nd Embodiment of the raising assistance tool which concerns on this invention. It is a figure which shows the structure of 3rd Embodiment of the raising assistance tool which concerns on this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a description will be given in detail of a rising assistance tool according to an embodiment of the present invention with reference to the drawings. Here, the same or similar parts are denoted by common reference numerals, and redundant description is omitted. Here, in order to simplify the description of the structure and method of use of the assisting tool for rising according to the present invention, in any of the following embodiments, the user directly does not use the bedding or the sitting tool. An example of using a rising assistance tool will be described.

[First Embodiment]
Hereinafter, the configuration of the first embodiment of the assisting tool for waking up according to the present invention will be described with reference to FIGS. 1 to 10. Here, FIG. 1 is a diagram showing a configuration of the first embodiment of the assisting tool for getting up according to the present invention. FIG. 2 is a perspective view of the rising assistance tool 1A. FIG. 3 is a right side view of the rising assistance tool 1A shown in FIG. FIG. 4 is a left side view of the rising assistance tool 1A shown in FIG. FIG. 5 is a top view of the rising assist tool 1A shown in FIG. FIG. 6 is a rear view of the rising assist tool 1A shown in FIG. Other figures will be described later as appropriate.

  The rising assistance tool 1A is used as a rising assistance for the bedding or sitting tool of the user Ms. As shown in FIG. 1 to FIG. 6 and the like, the rising assist tool 1A mainly includes a fixed sheet 2, a movable sheet 3, a hinge part 4, a movable sheet support member 5, a side column 6, and a connecting arm. 8 and an operation handle 9 are provided.

  The fixed seat 2 is a seat seat located on the buttocks side of the user Ms. The fixed sheet 2 extends in the direction along the leg portion as the longitudinal direction, and has a length of at least about the lateral width of the heel portion as the short direction. In addition, as shown in FIG. 7 etc., when the fixing sheet 2 is provided long enough, you may provide the legrest 21 in the edge part located in the foot | leg side of the fixing sheet 2. As shown in FIG.

  The movable seat 3 is a back seat located on the back side of the user Ms. The movable sheet 3 extends in the direction along the head as the longitudinal direction, and has a length of at least about the lateral width of the shoulder width as the short direction. In addition, as shown to FIG. 4 etc., the length of the transversal direction of the fixed sheet | seat 2 and the movable sheet | seat 3 may be equal, and different length may be sufficient.

  The hinge portion 4 connects one end portions of the fixed sheet 2 and the movable sheet 3 so as to be rotatable. Since the fixed sheet 2 corresponds to the seat seat located on the buttocks side of the user Ms and the movable sheet 3 corresponds to the back seat located on the back side of the user Ms, the movable seat is used with the hinge portion 4 as a rotation axis. 3 has a rotatable structure.

  A movable sheet support member 5 is attached to the movable sheet 3 so that the movable sheet 3 can be rotated about the hinge portion 4 as a rotation axis. The movable sheet support member 5 has, for example, an L-shaped sheet metal structure that covers the lower surface side from the side surface side of the movable sheet 3. The movable sheet support member 5 is formed with a connecting plate extending in a convex shape from the side surface in a direction perpendicular to the seat surface so as to be connected to the connecting arm 8. A connecting portion 51 for connecting the connecting arm 8 and the movable sheet support member 5 in a rotatable manner is provided on the connecting plate extending in a convex shape.

  One end of the connecting arm 8 is rotatably connected to the movable sheet support 5 (the connecting portion 51 in the figure), and the other end is rotatably connected to the lower end of the operation handle 9 (see FIG. Inner link 91). The arm length of the connecting arm 8 is made shorter than the length of the radius r of the operation handle 9 in the longitudinal direction. The connecting portion 51 and the connecting portion 91 are rotatably connected by, for example, a rotating shaft bolt or a double nut.

  The operation handle 9 can be operated with respect to a rotating state between a horizontal state in which the fixed sheet 2 and the movable sheet 3 are installed on the same installation surface and a state in which only the movable sheet 3 is raised from the installation surface. It is. As shown in FIG. 2 and the like, the grip portion of the operation handle 9 is substantially T-shaped and extends in the vertical direction, but in addition to this, it extends to the movable sheet 3 side as a U-shape or L-shape. The grip portion may be formed so as to be close to the upper body side in the supine posture.

  In the example of the rising assistance tool 1A of the present embodiment, as shown in FIGS. 1 to 6 and the like, the horizontal support member 7 is used as the installation surface (or the installation surface). Further, the horizontal support member 7 is placed on a floor surface such as a flooring or a tatami mat or a bed.

  The side strut 6 is formed as a support structure for the fixed seat 2 and the operation handle 9. Specifically, the side struts 6 are formed in a direction perpendicular to the seat surface of the fixed sheet 2. In the example shown in FIG. 1 and the like, the side struts 6 are attached perpendicularly to the sheet surface of the fixed sheet 2 and can hold the fixed sheet 2 in a horizontal state on the installation surface.

  Moreover, the side support | pillar 6 has the rotation bearing 61 which supports the operation handle 9 so that rotation is possible in the approximate center part with respect to the longitudinal direction of the operation handle 9. As shown in FIG. In the rotation bearing 61, one end side of the shaft rod is connected so as to be fixed to the operation handle 9, and the other end side is rotatably connected to the side support column 6.

  Preferably, a ratchet 62 and a ratchet pawl 63 are attached to the side support 6 together with the rotation bearing 61. The rotation bearing 61, the ratchet 62, and the ratchet pawl 63 are configured to have a reverse rotation prevention mechanism so that the movable sheet 3 is not rotated suddenly in the reverse direction when the movable sheet 3 is rotated in the rising direction. .

  The teeth of the ratchet 62 have a shape that does not engage with the ratchet pawl 63 in a rotation direction (a direction in which the movable sheet 3 is raised) by an operation in which the operation handle 9 is tilted to the movable sheet 3 side. On the other hand, in the rotation direction (direction in which the movable seat 3 is tilted) by the operation in the direction of raising the operation handle 9, the teeth of the ratchet 62 have a shape that can be engaged with the ratchet pawl 63, and the rotation operation of the ratchet 62 is suppressed. The Further, a release mechanism such as an operation release button for disengaging the ratchet pawl 63 may be provided on the side support 6 so that the movable seat 3 can be easily tilted when it is tilted from the rising state.

  In addition, in the rising assistance tool 1A of the example shown in FIGS. 1 to 6 and the like, the rotation bearing 61, the ratchet 62, and the ratchet claw 63 are attached in an exposed state in the attached state of the side struts 6. A protective cover or the like that covers these portions and that can move the operation handle 9 may be attached.

  Next, a configuration as an additional function of the rising assistance tool 1A will be described. For example, preferably, the rising assistance tool 1 </ b> A further includes a horizontal support member 7 and a gentle descender (shock absorber) 31.

  The horizontal support member 7 is an installation surface (or installation surface) in the rising assistance tool 1A. The horizontal support member 7 is placed on a floor surface such as flooring or tatami mat, a bed, or the like. The horizontal support member 7 is connected at least on the side struts 6 and the lower surface side of the fixed sheet 2, and can hold the fixed sheet 2 in a horizontal state on the installation surface. In the rising assist tool 1A shown in FIG. 1 and the like, the horizontal support member 7 has a length up to the end side of the movable sheet 3 along the longitudinal direction when the fixed sheet 2 and the movable sheet 3 are in the horizontal state. There may be.

  The slow down machine 31 has a structure that expands and contracts in a longitudinal direction in accordance with the rotation of the movable sheet 3. The slow down machine (shock absorber) 31 has a weak resistance in the extending direction and a strong resistance in the contracting direction. The cylinder mechanism in the slow down machine 31 is, for example, a hydraulic type or a pneumatic type.

  Further, the horizontal support member 7 is provided with a storage groove 71 for storing the slow-down machine 31 on the contact surface side with the movable sheet 3 when the movable sheet 3 is in a horizontal state. In the slow down machine 31, one end side is connected to the upper end side on the back side of the movable sheet 3 (the slow down machine first connection portion 311), and the other end side is a groove of the storage groove 71 that stores the slow down machine 31. It is connected to one end of the inside (it is set as the slow down machine 2nd connection part 312).

  Next, a method of using the rising assistance tool 1A will be described. Here, FIG. 7 is an explanatory diagram of the usage state of the standing assist tool 1A in a flat state. FIG. 8 is an explanatory diagram of the usage state of the rising assist device 1A in the rising state. Moreover, FIG. 9 is an explanatory view of the usage state of the auxiliary assisting tool 1A by the assistant Mo.

  As shown in FIG. 7, the angle, position, and handle length of the operation handle 9 are substantially upright so that the user Ms extends his hand from the supine position and the operation handle 9 is provided at a reachable position. Determined.

  Since the connecting arm 8 is connected between the lower end portion of the operation handle 9 and the movable sheet support member 5, the movable sheet support member 5 is pulled through the connection arm 8 by the turning operation of the operation handle 9. The movable sheet 3 to which the movable sheet support material 5 is attached rises with the hinge portion 4 as a rotation axis.

  For example, as shown in FIG. 8, when the user Ms pulls the operation handle 9 at the movable angle φ and sets the rising angle θ to about 60 to 80 degrees at the maximum, the user Ms gets up with an easy posture. The rotation of the movable seat 3 with which the back of the user Ms is in contact with the easy position is assisted.

  The rising assistance tool 1A is a physical action of the user Ms in a direction of pushing down at least the upper end side of the operation handle 9 toward the movable seat 3 (for example, grasping the operation handle 9 and pulling it toward the upper body), or FIG. By the assistance operation of the assistant Mo other than the user Ms as shown, the lower end side of the operation handle 9 connected to the connection arm 8 pulls the movable sheet support member 5 and the movable sheet 3 is raised from the horizontal state. Assist the turning operation to shift to.

The following is a simple calculation example of rotation and trajectory in the support structure of the present embodiment.
As shown in FIG. 1, a radius r that is a length from the lower end of the operation handle 9 to the axis of the rotary bearing 61, a movable angle φ (radian) of the operation handle 9, and the operation handle 9 within the movable range. When the track length L ₁ at the lower end is set,
L ₁ = r · φ (Formula 1)
It becomes.

Next, as shown in FIG. 1, the length from the pivot axis of the hinge portion 4 to the connection point between the connecting arm 8 and the movable sheet support member 5 is defined as a rotation radius d, and the operation handle 9 is movable at a movable angle φ. When the rising angle θ (radian) of the movable sheet 3 from the horizontal state of the seat 3 to the rising state is set as the track length L ₂ of the connection point between the connecting arm 8 and the movable sheet support member 5,
L ₂ = d · θ (Formula 2)
It becomes.

Here, the track length L ₁ of the lower end of the operating handle 9 in relation to the track length L ₂ of the connection point of the connecting arm 8 and the movable seat support member 5, is considered to L ₁ ≒ L _2. Therefore, based on the relationship between (Expression 1) and (Expression 2), the rising angle θ of the movable sheet 3 is
θ≈φ · r / d (Formula 3)
The relationship is derived.

  According to (Expression 3), when the ratio of r / d is large, the rising angle θ is increased in proportion to the movable angle φ of the operation handle 9. For example, when the ratio r / d is large, the rising angle θ can be increased in proportion to the ratio r / d even when the movable angle φ of the operation handle 9 is small. That is, by operating the operation handle 9, the movable sheet 3 can act as a rising angle θ≈φ · r / d to assist the rotation operation.

  Here, FIG. 10 shows an example of a correspondence relationship between the movable angle φ of the operation handle 9 of the rising assistance tool 1A and the rising angle θ.

  For example, in the example of FIG. 10A, when the movable angle φa = 30 degrees and the rising angle θa = 77 degrees, r / d≈2.6. In the example of FIG. 10B, when φb = 30 degrees and θb = 60 degrees, r / d≈2.0. For example, when φa = 15 degrees and θa = 77 degrees, r / d≈5.1, and when φb = 15 degrees and θb = 60 degrees, r / d≈4.0.

  In view of the above, it is preferable that the ratio of r / d is 2 in consideration of including such a practical range (can be raised in a posture as shown in FIGS. 10A and 10B). ˜6, the radius r, which is the length from the lower end of the operation handle 9 to the axis of the rotary bearing 61, and the connecting arm 8 and the movable seat support 5 from the rotary axis of the hinge part 4. The rotation radius d is determined by the length to the connection point.

  According to the rising assistance tool 1A, it can be used mainly for the bedding or sitting tool of the user Ms as the following rising assistance.

  In the state where the user Ms is sleeping as shown in FIG. 7, when the operation handle 9 of the assisting tool 1 </ b> A is pulled up to the front by itself (to the chest side), the movable sheet 3 with which the back is in contact rotates. Therefore, without placing a burden on the waist of the user Ms, the user Ms can be shifted to a state where the user Ms gets up with the buttocks sitting on the fixed seat 2 as shown in FIG.

  At this time, even if the operation is stopped in the middle of getting up, by providing the reverse rotation prevention mechanism as described above, it does not return to the asleep state rapidly.

  In addition, when returning from the rising state to the sleeping state, the slow-down machine (shock absorber) 31 does not suddenly fall down, and the movable seat 3 is gradually rotated so as to incline horizontally.

  The user Ms grasps the operation handle 9 and uses a moment having an action point on an arm that grasps the operation handle 9 by a body motion that slightly puts the weight of the upper body so as to pull the operation handle 9 slightly. Via the connecting arm 8 connected to the lower end portion of the operation handle 9, the movable sheet 3 can be lifted up by assisting the turning operation of shifting the movable sheet 3 from the horizontal state to the rising state.

  Normally, when such an auxiliary tool is not used, the user Ms has to wake up his / her upper body with his / her waist as a fulcrum of the rising motion.

  On the other hand, in the rising assistance tool 1A of the present embodiment, a hand is placed on the grip portion of the operation handle 9, and the operation handle 9 is rotated while being tilted in the upper body direction with the rotation bearing 61 as a fulcrum. The abutting movable sheet 3 can be raised.

  Conventionally, when the upper body of a cared person / nurse or the like is raised with the assistance of an assistant Mo such as a caregiver / nurse, a considerable burden is placed on the body of the assistant Mo. In the worst case, the assistant Mo himself could suffer from back pain. On the other hand, as shown in FIG. 9, when the assistant Mo gets up and uses the assisting tool 1A, the burden on the body of the assistant Mo can be reduced.

  For example, the rising assistance tool 1A may directly use the rising assistance tool 1A without using a bedding or a sitting tool, or may use a lightweight bedding or sitting tool or the like.

  Further, in such a method of use, the rising aid 1A is made of, for example, a material (cloth, vinyl, carbon fiber, paper, etc.) whose surface is difficult to slip for the fixed sheet 2 as the material / material of the sheet, etc. The structural material is made of materials that are strong and can withstand load (metal, wood, plastic resin, carbon fiber, paper, cloth).

  As for the movable sheet 3, for example, the surface is made of a non-slip material (cloth, vinyl, carbon fiber, paper, etc.), and the base structure material is a material that is strong and can withstand load (metal, wood, plastic resin, carbon fiber, (Paper / cloth).

  The members of the joints and joints such as the movable sheet support member 5 and the operation handle 9 are made of metal, wood, plastic resin, carbon fiber, etc., as materials that can withstand heavy loads.

  As described above, the rising assist tool 1A of the present embodiment has a simple structure and can be manufactured with a low-cost material. For this reason, the manufacturing cost can be suppressed to a low cost.

  As described above, according to the rising assistance tool of the present embodiment, it is possible to have an auxiliary mechanism of self-power and other force with a simple structure.

[Second Embodiment]
The structure of the rising assistance tool of 2nd Embodiment is demonstrated using FIG. Here, FIG. 11 is a perspective view showing a configuration of the rising assisting tool 1B of the second embodiment.

  In the rising assistance tool 1B, as shown in FIG. 11, side struts 6b are provided as support structures on both sides of the fixed sheet 2 in the short direction.

  The side column 6b is formed in a direction perpendicular to the seat surface of the fixed sheet 2, and has a rotation bearing 61 that rotatably supports the operation handle 9b at a substantially central portion with respect to the longitudinal direction of the operation handle 9b. .

  The operation handle 9b supported from the rotation bearing 61 of each side support 6b on both sides in the short direction of the fixed sheet 2 is connected to the front side of the contact surface of the movable sheet 3 that contacts the back side of the user. Can be operated.

  As shown in FIG. 11, the connection handle 92 is formed in a bar shape that can be gripped, is rotatably connected to one operation handle 9b of the side struts 6b on both sides, and is detachable from the other operation handle 9b. It is said that.

  For example, the connection handle 92 of the operation handle 9b that can be gripped by the user can be opened and closed so that the body can pass through the rod-shaped portion. Since the bar portion of the operation handle 9b can be grasped with both hands, the movable sheet 3 can be raised by pushing down both operation handles 9b. As a result, the user can hold the connection handle 92 with both hands in a balanced manner, so that the operation handle 9b can be pushed down with a more stable posture and without difficulty.

  As described above, according to the rising assistance tool of the present embodiment, it is possible to have an auxiliary mechanism of self-power and other force with a simple structure.

[Third Embodiment]
FIG. 12 is a diagram showing a configuration of the third embodiment of the assisting tool for getting up according to the present invention. The rising assistance tool 1C of the third embodiment is an example of a structure to which a motor-driven assist device 64 is added. FIG. 12A shows a left side view of the rising assistance tool 1C, and FIG. 12B shows a top view of the rising assistance tool 1C. 12A is a perspective view seen from the XX direction side shown in FIG. 12B.

  In the rising assistance tool 1A of the first embodiment described above, it is assumed that the rising assistance tool 1A is used directly without using the bedding or the sitting tool, or the case where a lightweight bedding or sitting tool is used. Is. On the other hand, when it is difficult to get up by one's own power by the assisting operation by the assisting tool 1A of the first embodiment, or when a heavy bedding or sitting tool is used, a more powerful assisting operation is performed. Necessary.

  Therefore, the rising assistance tool 1C of the embodiment of the present embodiment is provided with a function capable of realizing a stronger auxiliary operation even in the above-described applications. For example, in the rising assistance tool 1C, as shown in FIGS. 12A and 12B, the side strut 6c is provided with the components of the assist device 64.

  The assist device 64 has a structure capable of meshing with an auxiliary gear 611 connected to the rotary bearing 61 via a transmission gear 643 via a shaft gear 642 fixed to the motor shaft of the motor 641 so that the movable sheet 3 is raised. Rotating movement can be assisted.

  Although not shown, the assist device 64 includes a drive device such as a battery or a rectifier for commercial power, a motor control circuit, and the like. In addition to this, for example, a motor activation command is transmitted by a contact signal from the operation handle 9, a sensor signal for capturing the operation, or the like. In addition, an operation command device or the like in which a motor start / stop command is transmitted by a user or an assistant pressing a start / stop button for the assist device 64 or the like.

  For example, the structure of the assisting tool 1A for rising up can be a structure in which components of the assist device 64 can be easily attached later, or a common structure in which the components of the assist device 64 are attached. In addition, the assist device 64 may be an auxiliary power source such as a pneumatic type or a hydraulic type using a foot pump or the like.

  The assisting tool 1C of the present embodiment further includes an assist device 64, so that it is easy even when it is necessary to significantly reduce the burden on a user who does not have physical strength by himself or a caregiver / assistant. It can assist the user to get up.

  As described above, according to the rising assistance tool of the present embodiment, it is possible to have an auxiliary mechanism of self-power and other force with a simple structure.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. For example, the features of the embodiments may be combined. Furthermore, these embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1A, 1B, 1C ... Standing assistance tool, 2 ... Fixed sheet, 3 ... Movable sheet, 4 ... Hinge part, 5 ... Movable sheet support material, 6, 6b, 6c ... Side support, 7 ... Horizontal support material, 8 ... Connection arm, 9, 9b ... operation handle, 21 ... footrest, 31 ... slow down machine, 51,91 ... connection part, 61 ... rotating bearing, 62 ... ratchet, 63 ... ratchet claw, 64 ... assist device, 71 ... storage Groove, 92 ... Connection handle, 311 ... Slow down machine first connection part, 312 ... Slow down machine second connection part, 611 ... Auxiliary gear, 641 ... Motor, 642 ... Shaft gear, 643 ... Transmission gear

Claims (4)

A rising aid used as a rising aid for a user's bedding or sitting,
A fixed sheet located on the buttocks side of the user;
A movable seat located on the back side of the user;
A hinge part that rotatably connects one end of the fixed sheet and the movable sheet;
A movable sheet support attached to the movable sheet;
An operation handle that can be operated with respect to a rotating state between a horizontal state in which the fixed sheet and the movable sheet are stationary on the same installation surface and a state in which only the movable sheet rises from the installation surface from the horizontal state;
Side struts that are formed as a support structure for the fixed seat and the operation handle, and that have a rotation bearing that rotatably supports the operation handle at a substantially central portion with respect to the longitudinal direction of the operation handle,
One end of the rotary bearing is connected to the movable sheet support member and the other end of the rotary handle is rotatably connected to the lower end of the operation handle. A connecting arm having an arm length shorter than the length to the axis,
The lower end portion of the operation handle connected to the connection arm by at least the body movement of the user in the direction of pushing down the upper end side of the operation handle toward the movable seat or the assistance operation of a person other than the user A rising assistance tool, wherein the side assists the rotation operation of pulling the movable sheet supporting member to shift the movable sheet from the horizontal state to the rising state. A radius r that is a length from the lower end portion of the operation handle to the shaft center of the rotation bearing and a movable angle φ of the rotation bearing in the operation handle, and
The length from the pivot axis of the hinge portion to the connection point between the connecting arm and the movable sheet support is determined from the horizontal state of the movable sheet at the rotation radius d and the movable angle φ of the operation handle. When the rising angle θ of the movable sheet leading to
The rising assistance tool according to claim 1, wherein the turning operation is assisted so that the rising angle θ of the movable sheet is approximately φ · r / d. The ratio of r / d is in the range of 2-6. On each of both sides in the short direction of the fixed sheet, the side support is provided,
The operation handle supported from the pivot bearing of each of the lateral struts on both sides in the lateral direction can be continuously provided on the front side of the contact surface of the movable seat that contacts the back side of the user. The waking assisting tool according to any one of claims 1 to 3, wherein the waking assisting tool is operable.

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