JP2010259705A - Nursing care device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nursing care device capable of suppressing cost increase by a simple configuration, keeping a suspension support part at a desired elevation angle by easy operation, and releasing the keeping state. <P>SOLUTION: The nursing care device for lifting and carrying a person to be cared over a support leg 3 provided with casters 2 at the corners is provided with: a pair of supports 4 provided upright on the support leg 3; a four-line parallel link mechanism 5 which has supporting points at the upper and lower sides of the supports 4, respectively, and moves a link lever in a vertical direction; a cushion member 6 provided on the rocking end side of the link lever constituting the four-line parallel link mechanism 5; a torso band 7 provided at the cushion member 6; a leg belt 8 provided at the link lever and put around the legs of the person to be cared; an operation arm 9 which rocks and rotates in the same direction as a caregiver operates; and elevation angle setting mechanisms 100 which is provided at the support points of the link lever and sets the elevation angle equivalent to the elevation rocking angle of the link lever in accordance with rocking of the operation arm 9. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a care device. In particular, the present invention relates to a mechanism for assisting transfer of a cared person who cannot stand by himself / herself.

  As a configuration for transferring by a caregiver for a cared person who cannot stand by himself / herself, for example, when transferring from a bed to another position, a portal frame is installed at the transfer position, In this state, a movable suspension support part that can move in the horizontal direction is provided on the horizontal frame of the portal frame, and the care receiver is suspended and supported by hanging the belt provided on the movable suspension part around the care receiver. The structure which moves a movable suspension support part toward another position from a bed is proposed (for example, patent document 1).

However, this configuration may require considerable equipment.
Therefore, a configuration has been proposed in which a handwheel handle is provided on a support column provided upright on a movable leg portion provided with wheels, and a suspension support arm that can be moved up and down by operation of the handwheel handle is provided (for example, Patent Documents). 2).
As in the configuration with the lift function as in Patent Document 2, a swing arm is provided instead of raising and lowering the suspension support arm, and the elevation angle corresponding to the rising swing angle of the swing arm is adjusted by the operation handle. A configuration has also been proposed (for example, Patent Document 3).

On the other hand, in the operation using the operation handle, it may take time to move up and down to a desired position.
Therefore, instead of the operation handle, a configuration has been proposed in which one end of a swing arm that can be swung by a caregiver is used as an operation unit, and a suspension support unit is provided at the other end (for example, Patent Document 4). .

JP 2001-104407 A JP-A-10-94566 JP 09-108277 A JP 2002-65766 A

  Unlike the configurations disclosed in other patent documents, the configuration disclosed in Patent Document 4 has the advantage that the facilities are not exaggerated and the operation time is relatively fast. Is complicated, and there is a possibility that a high-cost care device may be obtained.

  In other words, the configuration disclosed in Patent Document 4 is an arm on the side that supports a cared person in a suspended manner with a rotating hinge portion mounted on a support column provided upright on a support leg provided with wheels. And the arm on the operating side are interlocked. However, the elevation angle corresponding to the ascending swing angle of the suspension arm by the operating arm is controlled by air supply / exhaust control in the air cylinder.

  For this reason, the arm on the suspension support side cannot be maintained at the desired elevation angle only by swinging the operation side arm. Accordingly, a special elevation angle maintaining mechanism called an air cylinder is required, the configuration including the operation mechanism for controlling this mechanism is complicated, and there is a possibility that a high-cost care device may be obtained.

  An object of the present invention is to provide a structure that can suppress the increase in cost by a simple configuration and maintain the suspension support portion at a desired elevation angle and cancel the maintenance by a simple operation in view of the problems in the conventional care device. It is to provide a care device.

  In order to achieve the above object, a care device of the present invention is a care device for lifting and transferring a cared person who cannot stand by himself / herself, and includes a support leg having wheels at corners, and the support leg. A four-column parallel link mechanism that has a pair of support columns provided upright, a support point on the upper side of the support column and a lower portion of the support column, and a link lever that moves in the vertical direction; A cushion member provided on the rocking end side of the link lever constituting the link mechanism, and a torso band that is provided on the cushion member and can be adjusted around the waist around the cared person, A leg belt provided on a link lever used in the other one of the four-node parallel link mechanism and hung around a leg portion of a cared person, and a link lever used in one of the four-node parallel link mechanism Connected to a part of An operating arm for swinging the link lever by swinging about the support column as a fulcrum, and a support point of the link lever, which corresponds to the upward swing angle of the link lever An elevation angle setting mechanism that sets an elevation angle according to the swing of the operation arm, the elevation angle setting mechanism at an elevation angle according to the swing operation of the operation arm from an initial position where the care receiver is started to lift. The four-node parallel link mechanism can be locked and released at the position of the elevation angle so that the four-node parallel link mechanism can be lowered to the initial position.

  Further, the care device of the present invention defines a ratchet wheel provided at the support point and rotatable in conjunction with the swing of the operation arm, and a rotation position of the ratchet wheel. And a latching claw portion detachably attached to the ratchet wheel at one end in the longitudinal direction, and a sliding rod is inserted into the other end in the longitudinal direction. A movable locking lever is used, and the sliding rod is provided with an elastic body that can be expanded and contracted across the longitudinal end portion of the locking lever, and the sliding rod swings toward the support column. In response to the swinging operation of the release member that is movably supported, any one of the elastic bodies presses the other end in the longitudinal direction of the locking lever. Characterized by engaging and disengaging To have.

  Further, in the care device according to the present invention, a guide groove into which a lock pin provided on a link lever used in the four-bar parallel link mechanism can be fitted is provided at one end in the longitudinal direction, and one end in the extension direction of the thought spring is the above-described one. A rockable lock lever that is hooked to the other end in the longitudinal direction and whose rocking position is switched at an intermediate point of the thought spring, and the other end in the extension direction of the thought spring is hooked and the lock lever By sharing the swing fulcrum shaft, the position of the other end of the extension spring in the extending direction is changed with the swing fulcrum as a boundary to switch the swing urging direction to the lock lever. An external operation lever, and the guide groove has an elevation angle when the link lever is raised corresponding to the rocking position of the lock lever, and an initial position where the link lever is lowered to eliminate the elevation angle. When Holdable locking portion respectively is characterized in that is provided.

  Further, in the care device according to the present invention, the guide groove has an overturned J shape having a short-axis long hole, a long-axis long hole, and a groove continuous between these long holes, and the short-axis long hole is The lock holding portion at the elevation angle position of the lock lever and the long shaft elongated hole at the initial position of the lock lever are provided, and the lock pin corresponds to the swinging position of the external operation lever. By switching the swinging biasing direction to the lock lever by switching the other end position of the extension spring in the extension direction and by setting the swinging position of the operation arm, the swinging fulcrum The distance between the two is fixed, thereby preventing the link lever in each holding position from swinging.

  In the care device according to the present invention, the lock pin can be engaged with each locking holding portion provided in the lock lever by using the force in the gravity direction of the link lever.

  According to the present invention, when the link lever used in the four-node parallel link mechanism is swing-operated by the operation arm, the link lever of the four-node parallel link mechanism is raised and the position where the link lever has an elevation angle and the link lever is lowered. Thus, the initial position where the elevation angle is canceled can be set and held at that position. Moreover, since the holding release at that position can be performed only by the direct operation of the operator, there is no need for a special holding support mechanism and the like, and the complexity of the structure and the increase in cost as in the case of using the holding support mechanism are suppressed. It becomes possible.

It is an external view for demonstrating 1st Embodiment of the apparatus for care by this invention. It is a figure for demonstrating the principal part structure of the apparatus for nursing care shown in FIG. It is a figure for demonstrating the internal structure of the elevation angle setting mechanism of the link lever used for the apparatus for care shown in FIG. It is a figure for demonstrating the use condition of the apparatus for care using the elevation angle setting mechanism shown in FIG. It is a figure for demonstrating the one aspect | mode of an effect | action of the apparatus for care using the elevation angle setting mechanism shown in FIG. It is a figure for demonstrating the other aspect of an effect | action of the apparatus for care using the elevation angle setting mechanism shown in FIG. It is a figure for demonstrating 2nd Embodiment of the apparatus for care by this invention. It is a figure for demonstrating the principal part structure of the elevation angle setting mechanism used for the care apparatus by 2nd Embodiment shown in FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is an external view for explaining a first embodiment of a care apparatus according to the present invention.
In the same figure, the nursing care device 1 includes a support leg 3 formed of a rectangular frame in plan view having wheels (casters) 2 at corners, and a pair of support columns 4 provided upright on the support leg 3; A four-bar parallel link mechanism 5 having a swing fulcrum at the upper and lower portions of the support column 4 and having the support column 4 as a fixed portion is provided.

  A chest pad cushion member 6 is provided at the rocking end of the link levers 5A and 5A ′ used in the four-node parallel link mechanism 5, and the rocking end of the link lever 5A is provided on the side surface of the cushion member 6. A ring 5A1 is provided, and as shown in FIG. 4 (B), the ring 5A1 is inserted with a torso band 7 that is looped around the waist of the cared person P and can be adjusted in circumference. It has become.

  As in the case of the torso band 7, the link lever 5 </ b> A located on the lower side among the link levers used in the four-bar parallel link mechanism 5 as shown in FIG. 4 as a member that supports the cared person's body. 'Is provided with a leg belt 8 which is hung around the leg portion of the cared person. 1 and 2, reference numeral 5 </ b> C indicates a handle used when the care device is moved.

One of the link levers (indicated by reference numeral 5A for convenience) is provided with an operation arm 9 having an articulation lever 9A connected to a part of the link lever as an operating portion.
In FIG. 1, the operation arm 9 is integrated with the center in the longitudinal direction of the support rod 9C horizontally mounted between the support columns 4, and the link lever 5A of the four-node parallel link mechanism 5 is moved by swinging operation. Can be moved up and down.
As shown in FIG. 2 (C), the link lever 5A has a position having an elevation angle (θ) corresponding to the swing angle when the link lever 5A is raised, and as shown in FIG. 2 (B), the link lever 5A lowers the elevation angle. The member swings between the canceled initial positions.

An elevation angle setting mechanism 10 is provided as a mechanism for holding the link levers 5A and 5A ′ at a position having an elevation angle and releasing the holding at the position.
FIG. 3 is a diagram showing the internal structure of the elevation angle setting mechanism 10, in which the elevation angle setting mechanism 10 includes a ratchet wheel 10 </ b> A that can rotate in conjunction with the swing of the operation arm 9, and a ratchet wheel 10 </ b> A. The locking mechanism 11 is configured to define and release the rotational position. The support rod 9C (see FIGS. 1 and 2) is a swing fulcrum shaft of the operation arm 9, and the swing of the support rod 9C is transmitted to the link lever 5A via the articulation lever 9A and rotates the shaft 9B. .

The locking mechanism 11 includes a locking lever 11 </ b> A, a sliding rod 12, and elastic bodies 13 and 14.
As the locking lever 11A, a lever capable of seesaw movement is used with a support shaft 11A1 provided in the casing of the elevation setting mechanism 10 as a swinging fulcrum, and one end of the locking lever 11A can be engaged with and disengaged from the ratchet wheel 10A. The sliding rod 12 is inserted through the locking claw portion 11A2 and the other longitudinal end 11A3.

  The sliding rod 12 has an axial direction set to be substantially horizontal, a swing link lever 15 is connected to one end in the axial direction, and corresponds to a compression spring on both sides of the other end 11A3 in the longitudinal direction of the locking lever 11A. Elastic bodies 13 and 14 are arranged.

  As shown in FIGS. 1 and 2, the swing link lever 15 has both ends in the axial direction of the release bar 16 horizontally mounted between the casings of the elevation angle setting mechanism 10 as swing support points, and the swing end side is a slide rod. 12 are connected to one axial end.

  The release bar 16 is a member that has a convex shape at both ends in the axial direction as a shape along the axial direction, and can be rotated by the operator around the both ends in the axial direction.

  The elastic bodies 13 and 14 arranged with the other end 11A3 in the longitudinal direction of the locking lever 11A sandwiching either one of the surfaces of the other end 11A3 in the longitudinal direction of the locking lever 11A according to the sliding direction of the sliding rod 12. It is a member having a pressing function.

  That is, in FIG. 3A showing the state where the release lever 16 is rotated to the release position, the surface of the other end 11A3 in the longitudinal direction of the lock lever 11A facing the elastic body 14 is pressed, and thereby the lock lever 11A swings clockwise about the support shaft 11A1. At this time, the engagement claw portion 11A2 is disengaged from the ratchet wheel 10A.

  On the other hand, FIG. 3B shows a state in which the release lever 16 is rotated to the non-release position. In this state, the sliding rod 12 slides in the opposite direction to that shown in FIG. Move. As a result, the elastic body 13 presses the surface of the other end 11A3 in the longitudinal direction of the locking lever 11A opposite to the elastic body 13 so that the locking lever 11A swings counterclockwise and the locking claw portion 11A2 is moved. The state engaged with the teeth of the ratchet wheel 10A is maintained.

  When the latching claw portion 11A2 is engaged with the ratchet wheel 10A, the operation arm 9 is pushed down to raise the link levers 5A and 5A ′ of the four-node parallel link mechanism 5 and bring it to a position having an elevation angle. This state is the state shown in FIG.

Since the present embodiment is configured as described above, the operation, that is, the case where the care receiver P is transferred will be described as shown in FIGS.
First, when the four-bar parallel link mechanism 5 of the care apparatus 1 is raised, the release lever 16 (see FIGS. 1 and 2) is rotated so that the sliding rod 12 is as shown in FIG. The locking lever 11 </ b> A is pressed by the elastic body 14.
As a result, the engagement between the latching claw portion 11A2 of the latching lever 11A and the ratchet wheel 10A is released, and the link levers 5A and 5A ′ of the four-node parallel link mechanism 5 are lowered by the force in the gravitational direction due to their own weight, and the elevation angle The link levers 5A and 5A ′ swing at an initial position where there is no. This state is the state shown in FIG.

In this state, the trunk band 7 and the leg belt 9 are hung around the cared person P (see FIG. 5B), and then the operation arm 9 is pushed down to link through the articulated lever 9A. The levers 5A and 5A ′ are swung in the ascending direction.
As the link levers 5A and 5A ′ swing in the ascending direction, an elevation angle θ (see FIG. 2) is generated, and in this state, the cared person P is suspended by the four-bar parallel link mechanism 5 (Refer to FIG. 5C).

  When the cared person P is suspended and supported by the four-contact parallel link mechanism 5, a state in which the cared person P can be transferred from the wheelchair C to another place as shown in FIG. It is possible to move to the transfer place in the state (see FIG. 6B). During this movement, the handle 5C provided on the support column 4 functions effectively.

  When the movement to the transfer place is completed, as in the procedure shown in FIG. 5A, the release lever 16 is rotated to engage the engagement claw portion 11A2 of the engagement lever 11A and the ratchet wheel 10A. The care recipient P can be lowered and placed on the transfer place, for example, the bed B (see FIG. 6C).

  In the embodiment as described above, since the care receiver can perform the transfer operation only by the operation of the operator, the transfer operation can be easily performed without setting a special procedure. In addition, it is possible to reduce the labor burden on the operator by appropriately setting the length of the operation arm 9 to make the moment appropriate.

Next, a second embodiment of the care apparatus according to the present invention will be described.
This embodiment is characterized by an elevation angle setting mechanism.
FIG. 7 is a view showing a care apparatus (indicated by reference numeral 1 ′ for convenience) using the elevation angle setting mechanism (indicated by reference numeral 100 in FIG. 7 for convenience), which is the above feature. The same members as those shown are indicated by the same reference numerals. In the embodiment shown in FIG. 7, the operating arm 9 is integrated with the link lever 5A of the four-node parallel link mechanism 5, and one of the swinging ends of the operating arm 9, that is, the link on the four-node parallel link mechanism 5 side. The lever 5A is provided with a lock pin 102 used in an elevation angle setting mechanism 100 described later.

In the elevation setting mechanism 100 equipped in the care apparatus 1 ′ in FIG. 7, a lock lever 101 is provided between the support column 4 and one link lever 5 </ b> A of the four-node parallel link mechanism 5.
In the present embodiment, one link lever 5A used in the four-node parallel link mechanism 5 is provided with a lock pin 102, and the lock pin 102 is formed between the support column 4 and the swing end in the longitudinal direction of the link lever 5A. It is fixed at an intermediate position. The lock pin 102 is installed on the link lever 5A side by using the force in the gravitational direction of the link lever 5A, and the lock pin 102 is engaged with a latch holding portion provided in the guide groove on the lock lever 101 side. It is desirable that the link lever 5A be maintained at such a position as to prevent the link lever 5A from being inadvertently swung by a moment in the direction of gravity.

  FIG. 8 is a diagram showing details of the lock lever 101. In FIG. 8, the lock lever 101 is a member that is provided on the support column 4 side and is supported so as to be swingable by a support pin 101A constituting a swing fulcrum. One end in the longitudinal direction is engaged with a guide groove 101B into which the lock pin 102 can be fitted, and the other end in the longitudinal direction, that is, the end on the swing fulcrum side is hooked with one end in the extending direction of the thought spring 103. .

  The other end of the extension spring 103 is hooked on the swing end of the external operation lever 104, and the external operation lever 104 shares the support pin 101 </ b> A of the support column 4 with the swing support point of the lock lever 101. ing.

  The lock lever 101 has an intermediate point at a midpoint of the thought spring 103, that is, a position where a line connecting the latching position of the think spring 103 on the external operation lever 104 and the support pin 101A coincides with the longitudinal direction of the lock lever 101, The swing biasing direction by the thought spring 103, that is, the direction in which the traction force acts can be switched with the intermediate point as a boundary.

  FIG. 8A shows a state in which the latching position of the thought spring 103 on the external operation lever 104 side is moved counterclockwise from the middle point of the think spring 103, and FIG. A state in which the latching position of the thought spring 103 on the external operation lever 104 side is moved clockwise with the middle point of the spring 103 as a boundary is shown.

  The lock lever 101 has a habit of swinging clockwise (in the direction indicated by the arrow CW) with the support pin 101A as a fulcrum when the swing spring 103 is in the swing biasing direction shown in FIG. In the case of the swing biasing direction of the thought spring 103 shown in FIG. 8B, a habit of swinging in the counterclockwise direction (the direction indicated by the arrow CCW) with the support pin 101A as a fulcrum occurs.

  On the other hand, the guide groove 101B provided at one end in the longitudinal direction of the lock lever 101 has a position having an elevation angle when the link lever 5A, 5A ′ is raised corresponding to the swing position of the lock lever 101 and each link lever 5A. An engaging portion capable of holding the lock lever 101 is provided at an initial position where 5A ′ descends to cancel the elevation angle.

  The guide groove 101B has an overturned J-shape including a short-axis long hole 101B1, a long-axis long hole 101B2, and a groove portion 101B3 that communicates between each of the long holes. The long shaft long hole 101B2 is used as a latch holding portion capable of holding the lock lever 101 at the initial position where the elevation angle is eliminated. It is like that.

  When the lock pin 102 is positioned at each latching holding portion, one of the long-axis long holes 101B1 or the long-axis long holes 101B2 in the longitudinal direction, more specifically, the end located on the lower side Since the force in the gravity direction due to the weight of the link lever 5A acts via the lock pin 102, the lock pin 102 can be kept in a state of being stopped at any one of the end portions. As a result, the lock pin 102 is stopped at the end portion to be prevented from moving, so that the swinging of the link lever 5A, particularly the movement in the gravitational direction is prevented, and the position having the elevation angle is set to the initial position or the initial position, respectively. Will be retained.

The timing for switching the swing position of the external operation lever 104 corresponds to when the link levers 5A and 5A ′ of the four-bar parallel link mechanism 5 are raised and lowered.
FIG. 8A shows a case where the link lever 5A is lowered and is located at an initial position where the elevation angle is eliminated. From this state, the link lever 5A is swung in a direction to push down the operation arm 9. When raising, the external operation lever 104 is swung from the position indicated by the two-dot chain line to the position indicated by the solid line in the counterclockwise direction (the direction indicated by the arrow S1 in FIG. 8A).

  When the link lever 5A is raised, the lock lever 101 has a clockwise swinging behavior, so that the lock pin 102 that moves in conjunction with the swing of the link lever 5A is in the short shaft long hole 101B1 of the guide groove 101B. It becomes easy to fit in. That is, since the lock lever 101 and the link lever 5A swing in the direction approaching each other, the lock pin 102 is inserted into the guide groove 101B of the lock lever 101 swinging in the direction approaching the link lever 5A. It becomes easy to enter. As a result, when the push-down of the operation arm 9 is released, the lock pin 102 is stopped by the longitudinal end of the short-axis long hole 101B1 of the guide groove 101B using the force in the gravity direction of the link lever 5A. (State shown by a two-dot chain line in FIG. 8A).

  In this state, a counterclockwise moment is generated in the link lever 5A of the four-joint parallel link mechanism 5 due to the weight of the cared person acting on the swing end side, but the link lever 5A is locked to the longitudinal end of the short shaft long hole 101B1. Since the pin 102 is stopped, the link lever 5A is held at a position having an elevation angle as shown by a solid line in FIG. 8B.

On the other hand, contrary to the case described above, when the link lever 5A is lowered, as shown in FIG. 8B, the external operation lever 104 is moved clockwise (the direction indicated by the arrow S2 in FIG. 8B). Rocks.
As a result, the locking lever 101 has a swinging behavior in the counterclockwise direction by switching the latching position of the thought spring 103 on the external operation lever 104 side. As a result, the lock pin 102 is easily pulled out from the short shaft long hole 101B1.
When the link lever 5A is swung in the clockwise direction by swinging the operating arm 9 in this state, the lock lever 101 is swung counterclockwise and the link lever 5A is swung clockwise. The lock pin 102 that has come out of the short-axis long hole 101B1 of the groove 101B is likely to enter the long-axis long hole 101B2 of the guide groove 101B, and is blocked by the longitudinal end of the long-axis long hole 101B2.

  In this state, a counterclockwise moment due to the weight of the cared person acting on the swing end side is generated with respect to the link lever 5A of the four-node parallel link mechanism 5, but the longitudinal end portion of the short shaft long hole 101B1 is generated. Since the lock pin 102 is engaged, the link lever 5A is held at the position where the elevation angle is eliminated as shown by the solid line in FIG.

  In the embodiment as described above, the link lever can be held at the elevation angle position and the initial position without the elevation angle only by the swinging operation of the external operation lever 104. Therefore, the external operation lever 104 can be set without setting a special procedure. And the operation arm 9 can be used to lift and transfer the cared person.

DESCRIPTION OF SYMBOLS 1,1 'Care apparatus 2 Wheel 3 Support leg 4 Support pillar 5 4 node parallel link mechanism 5A One link lever 5A' The other link lever 6 Cushion member 7 trunk band 8 leg belt 9 operation arm 9A In operation part Corresponding articulation lever 10,100 Elevation angle setting mechanism 10A Ratchet wheel 11 Locking mechanism 11A Locking lever 11A1 Support shaft 11A2 Locking claw part 11A3 at one end in the longitudinal direction 12 Slide rod 13, 14 Elastic body 15 Swing link lever 16 Release bar 101 Lock lever 101A Support pin 101B Guide groove 101B1 Short shaft long hole 101B2 Long shaft long hole 102 Lock pin 103 Thought spring 104 External control lever

Claims (4)

A care device for lifting and transferring a cared person who cannot stand by himself / herself,
Support legs with wheels in the corners;
A pair of support columns provided upright on the support legs;
A four-bar parallel link mechanism having support points on the upper side of the support column and on the lower side thereof, and moving the link lever in the vertical direction;
A cushion member provided on the rocking end side of the link lever constituting the four-contact parallel link mechanism;
A torso band that is provided on the cushion member and is adjustable around the length of the cared person's torso;
A leg belt provided on a link lever used in another one of the four-bar parallel link mechanism and hung around a leg of a cared person;
An operating arm having an operating part coupled to a part of a link lever used in one of the four-node parallel link mechanisms, and swinging the link lever by swinging about the support column;
An elevation angle setting mechanism that is provided at a support point of the link lever and sets an elevation angle corresponding to the upward swing angle of the link lever according to the swing of the operation arm;
The elevation angle setting mechanism locks the four-bar parallel link mechanism at an elevation angle corresponding to the swing operation of the operation arm from an initial position where the care receiver is started to be lifted, and releases the lock at the position of the elevation angle. Then, it is possible to lower the 4-joint parallel link mechanism to the initial position. The elevation angle setting mechanism includes a ratchet wheel provided at the support point and rotatable in conjunction with the swing of the operation arm;
And a locking mechanism for defining the rotational position of the ratchet wheel and releasing the regulation,
The locking mechanism is provided with a locking claw that can be engaged with and disengaged from the ratchet wheel at one end in the longitudinal direction, and a locking lever that is inserted into the other end in the longitudinal direction and is capable of seesaw motion.
The sliding rod is provided with an elastic body that can expand and contract across the longitudinal end of the locking lever,
The sliding rod is in a state in which any one of the elastic bodies presses the other end in the longitudinal direction of the locking lever in response to a swinging operation of a release member that is swingably supported on the support column side. The care device according to claim 1, wherein the claw portion is engaged with and disengaged from the ratchet wheel. A guide groove into which a lock pin provided on a link lever used in the four-bar parallel link mechanism can be fitted is provided at one end in the longitudinal direction, and one end of the extension spring in the extension direction is latched to the other end in the longitudinal direction. A rockable lock lever whose rocking position can be switched with the middle point of the thought spring as a boundary;
The other end in the extension direction of the thought spring is latched and the position of the other end in the extension direction of the think spring is changed with the swing fulcrum as a boundary by sharing the swing fulcrum shaft of the lock lever. A swingable external operation lever that switches the swing biasing direction to the lever,
The guide groove can be held at a position having an elevation angle when the link lever is raised corresponding to the rocking position of the lock lever and an initial position where the link lever is lowered to cancel the elevation angle. The nursing device according to claim 1, further comprising a stop portion. The guide groove has an overturned J shape having a short-axis long hole, a long-axis long hole, and a groove continuous between these long holes, and the short-axis long hole is locked at an elevation angle position of the lock lever. A holding portion, and a long shaft long hole provided with a locking holding portion at an initial position of the lock lever,
The lock pin is configured to switch the swing biasing direction to the lock lever by switching the other end position in the extension direction of the thought spring according to the swing position of the external operation lever, and to set the swing position of the operation arm. 4. The link lever at each locking and holding position is prevented from swinging by being locked by each locking and holding portion and fixing the distance from the swing fulcrum. The care device described in 1.

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