JP2023074963A - Lowering adjustment component and deadweight use=type stand-up assist device including lowering adjustment component - Google Patents

Abstract

To provide a lowering adjustment component capable of smoothly lowering without impairing seating comfort by using a deadweight use-type stand-up assist device.SOLUTION: A lowering adjustment component 200 includes a pair of vertical members having a plurality of protrusions 18 aligned in the longitudinal direction, at side parts. a transverse member for supporting a seat part 12 on which a user sits, and first energizing means disposed opposite to each other with respect to a center of the transverse member and provided to intersect with each other in the longitudinal diction. A pair of locking members are respectively provided swingably between a locking position for receiving dead weight of a user and an unlocking position, with respect to each of a plurality of recesses of the corresponding vertical member. A protrusion has a serrated shape including a second engagement part inclined upward from a most retracted portion to a most protruded edge. When the seat part is lowered, switching means is turned on, and the user sitting on the seat part repeatedly moves a weight to be applied to the seat in the front and back direction to change over protrusions between the pair of locking members 32A and B, so that the user can lower the protrusions step by step to a first engagement part.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a lowering adjustment part and a lifting aid using its own weight, and more particularly, using the lifting aid using its own weight to lower a seat, the feeling of sitting is impaired. The present invention relates to a descent adjustment part that can be smoothly lowered without any pressure, and a self-weight-utilizing stand-up aid equipped with the descent adjustment part.

BACKGROUND ART Conventionally, various care tools for elderly people have been developed.
In particular, elderly people have weak legs and find it difficult to stand up on their own from a chair. .

The first type is, for example, as disclosed in Patent Literature 1 and Patent Literature 2, a driving device is used to raise an elderly person in a sitting position to a standing position.
More specifically, the stand-up assist device disclosed in Patent Document 1 includes a base serving as a foundation, a first arm that has a support portion that supports the body of a user at its tip, and is rotatably fixed to the base, A second arm slidable along the inside of the first arm, and a driving device housed inside the base for driving the first arm and the second arm, the driving device being a motor and a worm gear provided coaxially therewith. , a worm wheel that meshes with the worm gear and rotates around a horizontal axis, a pinion that is provided coaxially with the worm wheel, a gear that meshes with the pinion, a shaft that meshes with the gear, and a bevel gear attached to the shaft. and a sun gear constituting a planetary gear mechanism, the first arm is driven by the bevel gear, and the second arm is driven by the sun gear.
According to the above configuration, the first arm is in charge of circular motion and the second arm is in charge of linear motion. The trajectory of the arc, which is a combination of circles and straight lines drawn by the first and second arms, matches the natural movement of a person standing up. It is possible to provide assistance.

The standing-up assist device disclosed in Patent Document 2 includes a seat for sitting and a drive means for moving the seat from a sitting position to a separated position, and the driving means moves the seat from the sitting position. When moving to the unseated position, the seat portion is moved forward while tilting forward, and then moved diagonally rearward while being moved upward, and the seat portion has the first hole, the second hole, and the drive means includes a lift drive means for lifting and lowering the seat portion, a support, and a rotation drive means for rotating the support, and the lift drive means is provided in the first hole One end of the post is rotatably supported by the rotary driving means, and the other end of the post is connected to the seat through the second hole.
According to the above configuration, it is possible to reduce the lifting of the soles of the feet and the slipping of the buttocks when standing up from a toilet seat, etc., making it easier to stand up.

The second type is handrail aids, for example, as disclosed in US Pat.
More specifically, this handrail assisting device is equipped with various sensors so that elderly people who feel uneasy about getting out of bed or walking can grasp the degree of difficulty in standing and walking on a daily basis. Based on the data obtained from this assistive smart handrail device, we developed a standing motion observation and analysis system that evaluates the degree of independence in daily life (muscle balance). This is a stand-up movement, analysis, and support system that is sent to related parties. Using a stand-up assist type smart handrail device placed at the bedside, the direction and magnitude of the force generated on the handrail when the elderly, etc. By continuously acquiring information such as the strength and the size and distribution of the load on the floor on a daily basis, we can observe changes in the movement of standing up, and use this information to watch over and provide necessary coping methods.
The basic structure of the smart handrail device that assists standing up is to attach columns to the left and right sides of the bottom plate, and to provide a handrail on top of the columns. The base of the strut can be provided with adjustment means so that the height can be adjusted. A handrail with a horizontal bar is attached to the upper part of the column. A horizontal intermediate bar is provided in the intermediate part of the column. Since the handrail is equipped with a sensor that measures the load applied when the handrail is gripped, the handrail is attached to the support.

However, both types have the following technical problems.
The first type requires a driving device such as a driving motor, a driving mechanism, etc., which is expensive, heavy, and inconvenient to move. However, the more elderly people depend on care robots instead of using their own physical strength, the more they become the cause of weakening their physical strength, especially their legs.

Unlike the first type, the second type does not use a driving device and is lightweight and easy to carry. It is difficult for elderly people who are infirm to use it.
Furthermore, if an elderly person sitting on a chair has arm strength, it can be used to help them stand up. Until you can stand up completely from a sitting position and stand up with your feet, you have no choice but to support your body with your hands, and there is a risk of dropping your buttocks from the middle position to the sitting height.
In addition, it is equally difficult for the elderly to grasp the handrail aids and support themselves to descend to the desired height mid-sitting level.
As described above, both types can use their own physical strength in various ways, such as when sitting on a chair, when sitting straight, or when soaking in a bathtub, depending on the situation of the elderly. It is not a lightweight and portable lift that can be used while maintaining physical strength.
In this regard, the present applicant has proposed a device that is lightweight and convenient to carry, and uses the weight and body movement of the user in the sitting position to automatically adjust the sitting position without requiring nursing care and enabling the user to rehabilitate. We are proposing a self-weighted stand-up aid that can be lifted up and down.
This self-weight assisting device for standing up is a pair of vertical members each having a plurality of vertically aligned protrusions on its sides, and the plurality of protrusions on one side and the plurality of protrusions on the other side are arranged horizontally. A pair of vertical members arranged facing each other with a predetermined interval in the direction, and a horizontal member supporting a seating portion on which a user sits, the pair of vertical members being positioned so that the center of the horizontal member is located between the pair of vertical members. horizontal members extending in the horizontal direction so as to straddle between the members, and arranged on opposite sides of each other with respect to the center of the horizontal members, provided so as to intersect the horizontal members in the vertical direction, and the horizontal members with respect to the vertical members and a first biasing means for biasing each of the pair of locking members toward each of the plurality of recesses of the corresponding longitudinal member, wherein each of the pair of locking members are provided to each of the plurality of concave portions of the corresponding vertical member so as to be swingable about a connection point to the horizontal member between a locking position where the weight of the user is received and a locking release position. .
However, although such self-weight-based standing aids are convenient when a user who is seated on the seating section climbs up, they have the following technical problems when a user who is seated on the seating section descends. have a point.
That is, the convex portion has a serrated shape having a first engaging portion extending from the most retracted portion to the most projecting edge 35 and a second engaging portion inclined upward from the most retracted portion to the most projecting edge 35. , even in a state in which each of the pair of locking members is constantly pressed against the corresponding convex portion by the first biasing means, the user alternately applies his/her weight back and forth on the seat portion to lift the seat portion. When it moves upward, it rises along the inclined surface of the second engaging portion and can already rise while being pressed against the most retracted portion of the first engaging portion. Since it is necessary to be pulled out from the retracted portion to the most protruding edge 35 toward the other locking member and descend along the inclined surface of the second engaging portion, the convex portion at the lower end of the pair of locking members Separately, if the horizontal member that supports the seating portion is manually freed from the vertical member by removing the support by the first biasing means, the convex portion must be lowered step by step in the state of being constantly pressed against the convex portion by the first biasing means. It is difficult.
JP 2014-8341 JP 2009-297461 JP 2021-62123

In view of the above technical problems, it is an object of the present invention to provide a lowering adjustment that enables smooth lowering without impairing the feeling of sitting when lowering the seat using a self-weight type rising aid. to provide parts.
In view of the above technical problems, it is an object of the present invention to provide a lowering adjustment that enables smooth lowering without impairing the feeling of sitting when lowering the seat using a self-weight type rising aid. To provide a self-weight assisting device for standing up having parts.

In order to solve the above problems, the descent adjustment component of the present invention includes:
A pair of vertical members each having a plurality of vertically aligned protrusions on its sides, wherein the plurality of protrusions on one side and the plurality of protrusions on the other side are arranged to face each other at a predetermined interval in the horizontal direction. a pair of longitudinal members;
a horizontal member that supports a seat on which a user sits, the horizontal member extending in the front-rear direction so as to straddle between the pair of vertical members so that the center of the horizontal member is located between the pair of vertical members;
a pair of locking members arranged opposite to each other with respect to the center of the horizontal member, provided so as to cross the horizontal member in the vertical direction, and supporting the horizontal member with respect to the vertical member;
a first biasing means for biasing each of the pair of locking members toward each of the plurality of recesses of the corresponding vertical member;
Each of the pair of locking members is arranged between a locking position receiving the user's own weight and a locking release position with respect to each of the plurality of recesses of the corresponding vertical member, centering on the connection point with the horizontal member. , is pivotably provided,
The convex portion has a serrated shape having a first engaging portion extending from the most retracted portion to the most projecting edge 35 and a second engaging portion inclined upward from the most retracted portion to the most projecting edge 35. A lowering adjustment part applicable to a mold rising aid,
A base member having a flat portion exposed from between the pair of vertical members and slidable in the vertical direction along the pair of vertical members,
Furthermore, a connecting member that connects the horizontal member and the base member and is connected to the horizontal member from above is provided,
The base member has
In each of the pair of locking members, an inclination push-back means for pushing back the inclination of the upper end of one locking member toward the other locking member;
a switching means for turning on and off the push-back function of the tilt/tilt push-back means;
a stopper for limiting the push-back of the tilt-tilt push-back means;
When the horizontal member is tilted in the front-rear direction, the stopper pushes back the tilt push-back means at a position where the lower end of one of the upper locking members is separated from the most protruding edge 35 toward the other locking member. positioned on the base member to stop,
By turning on the switching means, the lateral member is tilted in the front-rear direction so that the upper end of each of the pair of locking members is tilted away from the corresponding protrusion against the biasing force of the first biasing means. At this time, the tilting and tilting push-back means is configured to push out the upper end of the engaging member in the opposite direction so that the lower end of the locking member is separated from the corresponding first engaging portion,
Accordingly, when the seat portion is lowered, by turning on the switching means, the lower end of one of the lower locking members when the horizontal member is tilted in the front-rear direction is engaged with the second locking portion of the corresponding convex portion. When it moves downward along the joining portion and reaches the most retracted portion, the lower end of the other locking member is separated from the most retracted portion of the first engaging portion of the corresponding convex portion toward the one locking member. A user sitting on the seat repeatedly shifts the weight on the seat in the front-rear direction so that the protrusions that are locked by the lower ends of the locking members are engaged with the pair of locking members. By alternately changing between the stop members, the seating portion can be lowered step by step along the plurality of projections.

According to the descent adjustment component having the above configuration, even when the pair of locking members are constantly pressed against the corresponding projections by the urging means, the user's weight on the front and back of the seat can be reduced. By alternately repeating, when ascending, it ascends along the inclined surface of the second engaging portion, and when ascending while being pushed to the back of the horizontal surface of the first engaging portion, when descending, the first Since it is necessary to pull out from the back of the horizontal surface of the engaging portion toward the other engaging member and descend along the inclined surface of the second engaging portion, it is difficult to descend the convex portion step by step. At some point, the descent adjustment component allows such stepwise descent of the projection, especially smooth descent.
As a result, for example, when bathing in a bathtub, the bather sits on the seat while the seat is positioned directly below the surface of the water so that the user can easily sit on the seat. By descending the convex portion one step at a time, especially smoothly, it is possible to soak in the bathtub up to the chest without the care of a caregiver. and it becomes possible to get out of the bathtub.

In order to solve the above problems, the weight-utilizing standing-up aid of the present invention includes:
A pair of vertical members each having a plurality of vertically aligned protrusions on its sides, wherein the plurality of protrusions on one side and the plurality of protrusions on the other side are arranged to face each other at a predetermined interval in the front-rear direction. a pair of longitudinal members;
a horizontal member that supports a seat on which a user sits, the horizontal member extending in the front-rear direction so as to straddle between the pair of vertical members so that the center of the horizontal member is located between the pair of vertical members;
a pair of locking members arranged opposite to each other with respect to the center of the horizontal member, provided so as to cross the horizontal member in the vertical direction, and supporting the horizontal member with respect to the vertical member;
a first biasing means for biasing each of the pair of locking members toward each of the plurality of recesses of the corresponding vertical member;
Each of the pair of locking members is arranged between a locking position receiving the user's own weight and a locking release position with respect to each of the plurality of recesses of the corresponding vertical member, centering on the connection point with the horizontal member. , is pivotably provided,
The convex portion has a serrated shape having a first engaging portion extending from the most retracted portion to the most projecting edge 35 and a second engaging portion inclined upward from the most retracted portion to the most projecting edge 35. A mold rising aid,
Furthermore, having the lowering adjustment component according to claim 1,
As a result, when the seat portion is lowered, the switching means is turned on so that the user sitting on the seat portion repeatedly shifts his or her weight on the seat portion in the front-rear direction. By alternately changing the convex portion to which the lower end is locked between the pair of locking members, the lower end of the locking member is guided by the second engaging portion while smoothly moving the convex portion step by step to the first engaging portion. to
When the seat portion is raised, the switching means is turned off, so that the user sitting on the seat portion repeatedly shifts the weight of the seat portion in the extending direction of the seat portion holding portion. By alternately changing the protrusions to which the lower ends of the members are locked between the pair of locking members, the seating portion can be raised and lowered.

Each of the pair of vertical members is a member having an L-shaped cross-section composed of a front portion extending in the front-rear direction and side portions extending in the left-right direction. A plurality of protrusions fixedly spaced apart from each other and formed on the side edges are offset in the left-right direction,
The lowering adjustment component has a flat plate shape with flat surfaces facing each other, and is inclined in a predetermined left-right direction with respect to the pair of vertical members in a state in which the pair of locking members and the horizontal member are assembled to the pair of vertical members. It is preferably insertable into the gap.
Further, it is preferable that the lower end of the connecting member is connected to the swinging center position of the horizontal member.
Furthermore, the tilt push-back means is provided on the base member above the upper end of the locking member in each of the plane portions, and is swingable between a position engaged with the locking member and a non-engaged position. a first oscillating member; and
and second biasing means for biasing the first swing member toward the engaged position.
In addition, the second biasing means is a cantilever-like bar spring that extends vertically and has a fixed upper end on the portion of the flat portion on the side opposite to the corresponding convex portion of the locking member, Preferably, the lower end is engageable with the first swing member.

Further, the switching means has a first swinging member moving member for moving the first swinging member to the disengaged position against the biasing force of the first biasing means on each of the planar portions,
a non-engaging position holding means for engaging the upper end of the first swinging member moving member to hold the first swinging member at the non-engaging position;
unlocking means for unlocking the upper end portion of the first swing member moving member by the non-engagement position holding means;
should have
Furthermore, in each of the planar portions, the stopper is fixedly arranged above the corresponding locking member,
The first swinging member is provided with a stopper pad that contacts the stopper at the edge on the side of the corresponding locking member,
The stopper pad preferably has a vertical length below the position where it contacts the stopper so as to cover the vertical movement range of the corresponding locking member.
Further, the first swinging member moving means is a second swinging member having an intermediate portion pivotally attached to the flat portion of the base member and extending vertically and swingable about the intermediate portion,
The upper end of the second swinging member can be locked by non-engagement position holding means, and the lower end of the second swinging member is biased toward the locking position by second biasing means. It is good to be

In addition, the non-engagement position holding means is a first manual lever capable of laterally swinging around a vertical rotation shaft provided on the upper surface of the base member,
the first manual lever is provided such that each end engages the upper end of the corresponding second swing member;
the unlocking means is a second manual lever that can swing vertically, the second manual lever having a recess on the lower edge thereof to which the first manual lever can be locked;
the first manual lever is biased toward the unlocked position by the second swinging member through the biasing force of the second biasing means;
By swinging the second manual lever upward, the first manual lever is moved to the unlocked position, and by swinging the first manual lever until it is locked in the recess, the first manual lever is It is preferably held in a locked position.
Also, the manual operation portions of the first manual lever and the second manual lever are preferably provided on the seat portion side.
Further, the locking member has an L-shaped vertical cross section including an upper plate portion arranged parallel to the vertical member and a bottom plate portion extending from the lower edge of the upper plate portion in a direction intersecting the vertical member,
The upper portion of the upper plate portion is connected to the first biasing means, and the lower surface of the bottom plate portion constitutes a portion for transmitting the user's own weight to the corresponding convex portion and extends from the lower edge of the upper plate portion of the bottom plate portion. One edge preferably constitutes an engaging portion for the second engaging portion of the corresponding projection.

Furthermore, the horizontal member is composed of a pair of plate members facing each other with their upper and lower surfaces spaced apart in the horizontal direction, and the pair of vertical members and the engaging member are housed in the space formed by the opposing inner surfaces of the upper and lower surfaces. Preferably, two pairs of plate members are arranged in a direction perpendicular to the upper and lower surfaces with a predetermined interval therebetween, and the seating portion is arranged across the two pairs of plate members.
In addition, each of the pair of vertical members is a member having an L-shaped cross-section composed of a front portion extending in the front-rear direction and side portions extending in the left-right direction. A plurality of protrusions fixedly arranged at predetermined intervals and formed on the side edges are offset in the left-right direction,
The lowering adjustment component may be housed in an interior space defined by a pair of longitudinal members.

In addition, when the user tilts the seat using his/her own weight, one locking member on the lower side of the tilt is locked to the most retracted portion of the corresponding convex portion of the one vertical member on the lower side of the tilt. However, when the other locking member on the upper side of the inclination moves upward while being guided by the second engaging portion of the corresponding convex portion of the other vertical member on the upper side of the inclination, the horizontal member laterally shifts to the lower side of the inclination. Therefore, it is preferable that the horizontal member is provided with a jig for preventing the seat portion from falling off, which prevents one of the locking members from being locked and disengaged.
Furthermore, it is preferable to provide a maximum tilt angle adjusting member on the upper surface of the horizontal member, which can adjust the tilt angle of the horizontal member by adjusting the distance between it and the outer surface of the vertical member.

Furthermore, the connecting positions of the pair of locking members with respect to the horizontal member are arranged symmetrically with respect to the center of the horizontal member, and the distance between the connecting positions is between the first locking portions of the vertically adjacent projections. It is preferably set according to the spacing and/or the maximum possible tilt angle of the seat by the user and/or the spacing between the pair of locking members.
In addition, the seat portion, vertical member, horizontal member, pair of locking members, and lowering adjustment component are preferably made of hard resin having a strength capable of supporting the weight of the user.

While referring to the drawings, the first embodiment of the self-weight-utilizing standing-up assist tool with descending adjustment parts according to the present invention will be described in detail below, taking as an example the case where the self-weight-using standing-up assist tool itself is used as a seating tool for a user. to explain.
As shown in FIGS. 1 to 6, the self-weight assisting device 10 includes a seat portion 12 on which the user sits, and a seat support portion 14 that supports the seat portion 12. The seat support portion 14 is roughly composed of an upright weight bearing portion 20 and a seat portion holding portion 22, and the user moves the seat portion 12 upward by sitting on the seat portion 12 and repeatedly inclining the upper body back and forth. so that you can stand up from the front.
The seat part 12 is similar to the seat surface of an ordinary chair, and is a rectangular seat surface having a cushioning property, for example, solid urethane, and its upper surface is recessed in the center where the buttocks can be accommodated. It is curved. As a result, when the user who is seated on the seat portion 12 tilts the upper body forward and backward, the upper surface of the seat portion 12 is prevented from shifting forward and backward.

The seat support part 14 has a pair of horizontal members 15 whose upper and lower surfaces 46 are opposed to each other with a gap therebetween. support the bottom of the The seat portion 12 is preferably detachable from the seat support portion 14 .
The seat support portion 14 is composed of a pair of plate members facing each other with a gap between the upper and lower surfaces. , two pairs of plate members are arranged in a direction perpendicular to the upper and lower surfaces at a predetermined interval, and the seating portion 12 is arranged across the two pairs of plate members.
The seat holding portions 22 are respectively bridged between the pair of upright weight bearing portions 20 and are connected to each other so as to be able to swing integrally. One horizontal member 15 is supported by one of the upright weight bearing portions 20, The other horizontal member 15 is supported by the other upright weight-bearing portion 20 and is supported at two points by the pair of upright weight-bearing portions 20 so as to be movable in the lateral direction (front-rear direction).
The seat holding portion 22 is supported by the pair of upright weight bearing portions 20 and constitutes a lateral member 15 that can swing vertically.
As will be described later in detail, a user who is seated on the seat portion 12 shifts the way in which the user places his or her weight on the seat portion 12 in the direction in which the seat portion holding portion 22 extends (front-to-rear direction). By alternately changing the convex portion 18 that locks the lower end between the pair of locking members 32, the seat portion 12 can be raised and lowered.
The inclination angle of the cross member 15 is preferably set between 5° and 30°. Less than 5° would require too many repetitions of the forward-backward tilting movement of the user's upper body to raise the seat 12 over the same height, whereas greater than 30° would cause such a This is because the number of repetitions can be reduced, but the tilting motion of the user at one time becomes tighter.
The seat support section 14 has, for example, a frame-shaped stand 42 with a U-shaped cross section that can be stably held on the floor surface, and one of the pair of upright weight bearing sections 20 is fixed to each of the opposing frame sections 44 . They are supported and arranged opposite each other. The frame portion 44 may be, for example, a pipe-shaped integral body.

As shown in FIG. 3, the upright weight bearing portion 20 is composed of a pair of vertical members 17, and the side portions 16 are arranged to face each other with a predetermined distance D therebetween.
More specifically, from the viewpoint of limiting the required inclination angle of the horizontal member 15, the predetermined distance D preferably does not exceed 20 centimeters in width of the rear end.
The vertical member 17 is a member having an L-shaped cross-section composed of a front portion 68 extending in the front-rear direction and side portions 70 extending in the left-right direction. More specifically, the side edges of the front portion 68 are fixedly arranged with a predetermined interval in the left-right direction, and the plurality of protrusions 18 formed on the side edges are offset in the left-right direction.

Each side portion 16 is provided with a plurality of protrusions 18 spaced apart by a predetermined interval h in the height direction.
As shown in FIG. 4, the convex portion 18 includes a first engaging portion 34 extending from the most retracted portion 39 to the most projecting edge 3535 and a second engaging portion sloping upward from the most retracted portion 39 to the most projecting edge 3535. 38, and the projecting portion around the second engaging portion 38 below the first engaging portion 34 that receives the user's own weight via the locking member 32 is a reinforcing portion. , and the second engaging portion 38 forms a guide surface for the lower end of the locking member 32 , while the most retracted portion 39 is at the locking position with respect to the locking member 32 .
When the user inclines the seat holding portion 22 by using its own weight, the lower end portion 30 of the locking member 32 is unlocked from the locked convex portion 18 .
The first engaging portion 34 is inclined downward from the most recessed portion 39 to the most projecting edge 3535 at an inclination angle Θ3 smaller than the upward inclination angle Θ4 of the second engaging portion 38 .
For example, Θ4 is 45° to 75° from the viewpoint that the lower end 30 of the locking member 32 is guided to the second engaging portion, From the viewpoint of engagement, 5° to 30° is preferable.
Alternatively, protrusion 18 may be retractably movable by upward movement of locking member 32 along second engaging portion 38 , while downwardly moving locking member 32 relative to first engaging portion 34 . may be fixed and held by the movement of

The interval h between the convex portions 18 adjacent to each other in the height direction is 0.5 cm to 2 cm, and the interval D between the side portions 16 is 0.5 cm to 2 cm, taking into account the burden on the user's physical strength when the user repeatedly inclines the upper body back and forth. is preferably between 2 and 5 cm.
As a modification, as shown in FIG. 7, the corresponding plurality of protrusions 18 are staggered in height, but may be aligned, and the distance h between the protrusions 18 on one side and the height on the other side may be the same. The interval h of the protrusions 18 on the side of 1 may be different, or may be a combination of alternate heights.
As will be explained later, depending on the situation of the user, for example, in the case of an elderly person with weak physical strength, the interval h between the convex portions 18 is alternately set to 1 cm, and the convex portions 18 are arranged slightly one by one. For example, if an elderly person has physical strength, the interval h between the projections 18 may be set at 2 cm, and the projections 18 may be jumped several steps.
Alternatively, the convex portion 18 may be retractably movable by upward movement of the cross member 15 and fixed by downward movement of the cross member 15 .
The range of R covers from the sitting state to the standing state, and is usually 20 cm to 40 cm. When used as a seating tool, the lowest level (sitting level) is 30 cm to 40 cm.

As shown in FIGS. 5 and 6, the upper end portion 26 is connected to the seat portion holding portion 22 via the first biasing means 28, the lower end portion 30 is engaged with one of the plurality of protrusions 18, and the lateral A locking member 32 is provided that is pivotably supported about a connection point 43 with respect to the member 15 .
The locking member 32 has an L-shaped longitudinal section including an upper plate portion 60 arranged parallel to the vertical member 17 and a bottom plate portion 64 extending from a lower edge 62 of the upper plate portion 60 in a direction intersecting the vertical member 17. , the upper part of the upper plate part 60 is connected to the first biasing means, the lower surface of the bottom plate part 64 constitutes a part for transmitting the user's own weight to the corresponding convex part 18, and the upper part of the bottom plate part 64 One edge portion 66 extending from the lower edge 62 of the plate portion 60 constitutes an engaging portion for the second engaging portion 38 of the corresponding convex portion 18 .
Locking members 32A and 32B are provided on the inner side (on the side of the seat portion 12) and the outer side of the vertical members 17 provided on the left and right sides, respectively. The point 43A and the connecting point 43B of the locking member 32B to the corresponding lateral member 15 are symmetrically arranged with a distance d with respect to the center C of the lateral member 15. The smaller the distance d, the better.

When the user tilts the upper body forward to tilt the front portion of the seat portion 12 downward, the lower end surface of one of the pair of locking members 32 on the front side corresponds to the lower end surface of the locking member 32 . While being supported by the first engaging portion 34 of the convex portion 18 and moving integrally with the horizontal member 15, the other locking member 32 on the rear side swings around the corresponding connection point. It moves upward while being guided by the second engaging portion 38 of the corresponding convex portion 18 , and finally engages with the first engaging portion 34 of the convex portion 18 . and the distance between the lower end surface of the locking member 32 and the connecting point of the locking member 32 to the lateral member 15, both the lower end surfaces of the locking members 32 can be aligned with the corresponding first engaging member. The weight of the user can be stably supported by surface contact with the joining portion 34, and the vertical member 17 provided with the convex portion 18 can be made of hard resin to reduce weight. As a result, it is convenient to carry, and since it is less corrosive, it is suitable for use by arranging it in a bathtub when taking a bath. It may be made of lightweight aluminum. If it is made of metal, the protrusions 18 may be formed by cutting, and if it is made of resin, the protrusions 18 may be formed by molding. In addition, since the drop prevention jig 40 described later is attached, each of the four locking members does not need to be surface-supported by the first engaging portion 34 of the corresponding convex portion 18. A form similar to point support may be used.

A fall prevention jig for the seat portion 12 is attached to the seat support portion 14 so that one of the upright weight-receiving portions 20 with which the locking member 32 engages engages with the other upright weight-receiving portion 20 . 40 are provided.
More specifically, on the side surface 81 of the fall prevention jig 40, the locking member 32 on the side opposite to the side on which the fall prevention jig 40 is provided is locked to the recessed portion of the corresponding convex portion 18, which serves as a fulcrum. As a result, when the locking member 32 on the side where the fall prevention jig 40 is provided rises to the upper convex portion 18, it hits the side surface and restricts the lateral movement while allowing the horizontal member 15 to tilt. , a curved portion 83 is formed. The shape of the curved portion 83 may be determined from such a viewpoint.
The curved plate prevents the locking member 32 on the same side from deviating from the locking position and falling when the locking member 32 on the other side rises with the locking position as a fulcrum, and prevents movement in the opposite direction. Facilitate.

When the user tilts the seat portion 12 using its own weight, one of the locking members 32 on the lower side of the inclination moves into the most retracted portion 39 of the corresponding convex portion 18 of the one vertical member 17 on the lower side of the inclination. While being locked, when the other locking member 32 on the inclined upper side moves upward while being guided by the second engaging portion 38 of the corresponding convex portion 18 of the other vertical member 17 on the inclined upper side, the horizontal member A fall prevention jig for the seat portion 12 is provided to prevent the other locking member 32 from being locked and disengaged due to lateral displacement of the seat portion 15 to the downward tilt side.

The first biasing means 28 is configured to always bias the lower end portion 30 of the locking member 32 toward the convex portion 18 . The first biasing means may be a normal coil spring.
The distance l2 between the connecting portion 25 and the connecting point 43 and the distance l1 between the lower end portion 30 and the connecting point 43 are from the viewpoint of utilizing this principle in the biasing force of the locking member 32 against the convex portion 18, and from the point of view of using this principle. However, it is preferable to set l2 larger than l1 from the viewpoint that the horizontal movement distance of the horizontal member 15 can be short.
With l1 and l2, it is possible to increase the pressing force of the L-shaped end to the corresponding convex portion 18 using a small biasing force according to the principle of leverage.
In this sense, the first biasing means 28 may be one or a plurality of rubber bands, and may be bridged between the locking member 32 and the seat portion holding portion 22 in a one-touch replaceable manner. Multiple rubber bands are safe even if one is broken.

The seat portion 12, the seat support portion 14, and the pair of upright weight bearing portions 20 are made of hard resin capable of supporting the weight of the user. This makes it safe and convenient to carry.
By adjusting l1 and the inclination angle Θ3 of the first engaging portion 34, when the engaging member is supported by the corresponding first engaging portion of the concave-convex portion 18, stable surface support is possible.

Maximum inclination angle adjustment means 41 are arranged on both sides of the vertical member 17 of the horizontal member with a predetermined distance W on the upper surface. More specifically, it is a rectangular plate placed on the upper surface, and a predetermined distance W between the edge of the rectangular plate near the vertical member 17 and the vertical member 17 is adjustable, whereby the horizontal member 15 is tilted. At this time, it hits the side of the vertical member 17 and restricts it from tilting any further. The inclination angle adjusting means adjusts the maximum inclination angle of the horizontal member 15. For example, when the predetermined interval W is set so that the convex portion 18 can be inclined up to two steps, the convex portion 18 is inclined one step at a time. The tilt angle adjusting means does not function when used so as to The maximum tilt angle adjusting means 41 may be capable of adjusting a predetermined interval W, or several types of rectangular plates having different lengths may be prepared.

As described above, when the user repeatedly inclines the upper body back and forth to raise the seat portion 12 from the seated state to the state immediately before standing up, the seat portion 12 is in the seated state and the state immediately before standing up. While the seat portion 12 is being raised, the seat portion 12 is supported by the fall prevention jig 40 and the maximum inclination angle adjustment means 41. It is stably supported at two points on the vertical member 17 via the horizontal member 15 without fear of the portion 12 falling.
More specifically, in the static state of the seated state and the state just before standing up, the seated position is 4 points in total, 2 points by the pair of left locking members 32 and 2 points by the pair of right locking members 32 . A seat portion 12 on which a user sits, a horizontal member 15 that supports the seat portion 12, and a locking member 32 that communicates between the horizontal member 15 and the vertical member 17. , is transmitted to the first engaging portion 34 of the convex portion 18 of the longitudinal member 17 .
On the other hand, in a dynamic state in which the seat portion 12 is raised, for example, when the user leans the upper body forward, the seat portion 12 tilts downward at the front portion and upward at the rear portion. In each case, the bottom plate portion 64 of the locking member 32 on the front side is pressed against the most retracted portion 39 of the corresponding convex portion 18 on the side surface 16 on the front side by the biasing force of the first biasing means 28, While being locked, the bottom plate portion 64 of the locking member 32 on the rear side is pressed against the second engaging portion 38 of the corresponding convex portion 18 of the side surface 16 on the rear side by the biasing force of the first biasing means 28 . , moves upward while being guided by the second engaging portion 38, and engages with the first engaging portion 34 of the convex portion 18 one step above.

At this time, when the user leans the upper body forward, the seat portion 12 can accordingly tilt the front portion downward and shift laterally in the front-rear direction.
Based on this assumption, the locking member 32 on the front side is rotatably connected about the connection point with the horizontal member 15 , but the lower portion of the locking member 32 is pressed against the most retracted portion 39 . Since the connecting point moves forward in this state, the locking member 32 on the front side moves together with the horizontal member 15. For example, when the user leans his/her upper body forward on the seat portion 12, the locking member 32 moves forward. By shifting the buttocks rearward, there is a possibility that the horizontal member 15 may slip rearward. While suppressing the rearward disengagement of the locking member 32 on the front side with the first engaging portion 34, the locking position of the locking member 32 on the front side with respect to the most retracted portion 39 is used as a fulcrum, and the rear side , the upper movement of the locking member 32 is enabled.
The maximum tilt angle limiting means limits the tilt angle of the seat portion 12, i.e., the horizontal member 15, to within the maximum tilt angle. Due to the inclination of the seat portion 12 due to the inclination, how much the convex portion 18 on the upper side of the inclination can rise is limited to one step or three steps by adjusting the distance from the side surface of the vertical member 17 of the maximum inclination angle limiting means 41. For example, it is possible to make it possible up to the stage. In this case, for example, when up to three steps are possible, the fall prevention jig 40 prevents the seat portion 12 from falling, while the seat portion 12 is tilted once to the front or rear side of the user's upper body. , it is of course possible to go up one or two steps.

Next, the lowering adjustment component 200 will be described. As shown in FIG. 2, the lowering adjustment component 200 is arranged above the horizontal member 15 and has opposed planar portions 204 exposed between the pair of vertical members 17, respectively. , and has a base member 202 slidable in the vertical direction along the pair of vertical members 17 and switching means for switching downward adjustment. As for the parts provided on the flat surface portions 204, one of the flat surface portions 204 is provided with a connecting member 254 that is connected to the horizontal member 15 from above and that connects the horizontal member 15 and the base member 202. 204, only the parts provided on one flat portion 204 will be described below.
The connecting member 254 has a lower end portion 258 connected to the swing center position of the horizontal member 15 and an upper end portion 256 connected to the base member 202 .

The base member 202 is accommodated in the inner space formed by the pair of vertical members 17, each side surface slidably contacts the inner surface of the corresponding vertical member 17, the thickness corresponds to the width of the inner surface of the vertical member 17, and the clip 260 suppresses backlash in the thickness direction.
In each of the pair of locking members 32, tilt push-back means for pushing back the tilt of the upper end of one locking member 32 toward the other locking member 32, switching means for turning on and off the push-back function of the tilt push-back means, and tilt push-back. A stopper 212 is provided for limiting the push-back of the means, and the stopper 212 is such that the lower end 30 of one of the upper locking members 32 when the lateral member 15 is tilted in the longitudinal direction is aligned with the uppermost portion of the corresponding projection 18 . It is positioned on the base member 202 so as to stop the push-back of the tilt push-back means at a position away from the protruding edge 35 toward the other locking member 32 .
The inclined push-back means is provided on the base member 202 above the upper end of the locking member 32 on each of the plane portions 204, and swings between a position engaged with the locking member 32 and a non-engaged position. A first pivotable member 206 and a second biasing means 218 for biasing the first pivotable member 206 toward the engaged position.
The second biasing means 218 extends vertically on the portion of the flat portion 204 on the side opposite to the projection 18 corresponding to the locking member 32 . is a cantilevered bar spring 218 , the lower end 220 of which is engageable with the first swing member 206 .
The first rocking member 206 is pinned to the base member 202 and can rock left and right about a pin position 208. Near a bottom end 210, a bottom end 220 of a bar spring 218 engages. A protrusion 216 is provided that transfers the biasing force of 218 to the first rocker member 206 and also engages the lower end 248 of a second rocker member 244 (described later) to reduce the tension of the bar spring 218. The biasing force is also transmitted to the second swing member 244 .
In each of the planar portions 204 , the stopper 212 is fixedly arranged above the corresponding locking member 32 , and the first swinging member 206 has a stopper pad 214 contacting the side surface 213 of the stopper 212 on the side of the corresponding locking member 32 . The stopper rest 214 has a vertical length h below the position where it contacts the stopper 212 so as to cover the vertical movement range of the corresponding locking member 32 .

The switching means has a first swing member moving member 244 for moving the first swing member 206 to the disengaged position against the biasing force of the bar spring 218 on each flat portion 204, and Non-engagement position holding means for engaging the upper end portion 246 of the first swing member moving member 244 to hold the first swing member 206 at the non-engagement position; and unlocking means for unlocking the upper end portion 246 of the moving member moving member 244 .
The first oscillating member moving member 244 is a second oscillating member 244 having an intermediate portion 250 pivotally attached to the flat portion 204 of the base member 202 and extending vertically to be able to oscillate about the intermediate portion 250 . , the upper end portion 246 of the second swinging member 244 can be locked by the non-engagement position holding means, and the lower end portion 248 of the second swinging member 244 is moved to the locking position by the second biasing means 218. urged toward.
The disengagement position holding means is a first manual lever 222 that can swing laterally around a vertical rotation shaft 228 provided on the upper surface 242 of the base member 202 .

The first manual lever 222 is provided so that each end 224, 226 engages with the upper end 221 of the corresponding second swing member 244, and the unlocking means is a second lever that can swing vertically. A manual lever 230, the second manual lever 230 has a recess 236 at its lower edge to which the first manual lever 222 can be locked. 236 can be locked to one end face 237 .
More specifically, the second manual lever 230 engages the first manual lever with one end 234 centered while the other end 232 is biased downward by a vertical biasing spring 231 . It is vertically swingable between the stop release level and the first manual lever lock level.

The first manual lever 222 is biased toward the unlocked position by the second swinging member 244 through the biasing force of the second biasing means 218, and swings the second manual lever 230 upward. , the first manual lever 222 is moved to the unlocked position and rocked until the first manual lever 222 is locked in the recess 236, thereby holding the first manual lever 222 in the locked position.
Manual operation portions of the first manual lever 222 and the second manual lever 230 are provided on the seat portion side (inside) so that the user sitting on the seat portion can easily operate them.
The descent adjustment component 200 has a flat plate shape with the flat portions 204 facing each other, and the pair of vertical members 17 is attached to the pair of vertical members 17 in a state in which the locking member 32 and the horizontal member 15 are assembled. It can be inserted and assembled at a predetermined interval in the left-right direction obliquely with respect to.
The base member 202 is fixed to the pair of vertical members 17 by clips 260 so as to be vertically slidable.

The switching means 205 is roughly composed of a first manual lever 222 , a second manual lever 230 , a vertical biasing spring 231 , a manual lever support member 238 and a second rocking member 244 .
The first manual lever 222 can swing horizontally between a lowerable position and a lowerable position about a vertical rotary shaft 228 provided on the upper surface 242 of the base member 202. The end portion 224 is engaged with the end surface 237 of the concave portion 236 through the upper end 246 of the second swing member 244 by 218 so as to reach the downward impossible position.

A vertical biasing spring 231 is provided at the other end 232 of the second manual lever 230 and constantly biases the other end 232 downward.
The manual lever support member 238 supports the manual lever 222 from below with the upper surface 240 at a level below the upper surface of the recess 236 , and is provided on each side of the base member 202 .
Each manual lever support member 238 is screwed into a screw hole provided in a bracket 252 provided on the upper surface 242 of the base member 202 .

With reference to FIGS. 7 to 9, the operation of the self-weight assisting device 10 having the above configuration, including the usage thereof, will be described below.
First, as shown in the upper part of FIG. 7, the switching means is turned off, and the seating section 12 is placed in a ready state for raising. More specifically, the inner end 224 of the manual lever 222 is pivoted to engage the end surface 237 of the recess 236, and the first pivoting member 206 of the lowering adjustment component 200 is disengaged from the corresponding engaging member 32. The matching position is a state in which the downward adjustment component 200 does not function.
In FIG. 8, when the front portion of the horizontal member 15 is tilted downward, the user tilts the upper body backward to tilt the rear portion of the horizontal member 15 downward and the front portion upward. The situation in which the seat part 12 is raised is shown. More specifically, in FIG. 8A, the bottom plate portion 64 of the locking member 32 on the front side is supported by the first engaging portion 34 of the corresponding convex portion 18, while the locking member 32 on the rear side is supported. 8(B) shows a state in which the lateral member 15 is inclined forward by supporting the bottom plate portion 64 of the bottom plate portion 64 on the corresponding first engaging portion 34 of the convex portion 18 above it. While the bottom plate portion 64 of the locking member 32 on the rear side is supported by the first engaging portion 34 of the corresponding convex portion 18 , the bottom plate portion 64 of the locking member 32 on the front side is supported by the corresponding convex portion 18 . FIG. 8(C) shows a state in which the bottom plate portion 64 of the locking member 32 on the rear side is guided upward while contacting the second engaging portion 38 of the rear side, and FIG. 34, the bottom plate portion 64 of the locking member 32 on the front side reaches the most protruding edge 3535 of the convex portion 18 one step above. The bottom plate portion 64 of the engaging member 32 is supported by the first engaging portion 34 of the corresponding projection 18 , while the bottom plate portion 64 of the locking member 32 on the front side is supported by the first engaging portion 34 of the projection 18 one step above. 1 engaging portion 34 and the bottom plate portion 64 of the locking member 32 on the front side from FIG. 8A is raised by one step.

On the other hand, FIGS. 9A and 9B show a state in which the level of the seating portion 12 increases from a seated state to a standing state, FIG. 9A shows a state in which the user is seated, and FIG. , the user repeatedly tilts the upper body back and forth to raise the level of the seating portion 12, and FIG. 9C shows the state in which the user can stand up.
First, as shown in FIG. 9(A), the maximum tilt angle adjusting means 41 adjusts the distance, and the elderly user sits down.
Next, as shown in FIG. 8A, when the user stands up from the seated position, the user's weight on the seat portion 12 is changed.
More specifically, by shifting the position of the buttocks of the user placed on the seat portion 12 forward, the front portion of the support portion of the seat portion 12 tilts downward.
As a result, the lower end of one locking member 32 positioned at the low level is unlocked from the receiving surface of the convex portion 18 , while the lower end of the other locking member 32 positioned at the high level is released from the convex portion 18 . is locked to the receiving surface of the
During this time, the fall prevention tool can prevent the seat portion 12 from falling. The tilt angle of the horizontal member 15 is limited by the maximum tilt angle adjusting means 41 .

Next, as shown in FIG. 8(B), the user who is seated on the seat inclines the upper body to the rear side, thereby further applying the weight to the rear side, and thereby the front side of the horizontal member 15 is bent. When the upper and rear sides are further tilted downward and are laterally displaced toward the rear side, one edge of the bottom plate portion of the locking member 32 on the rear side is first biased against the corresponding protrusion 19 . While being pressed by the urging force of the means 28 and locked to the most retracted portion 39, the connecting point of the locking member 32 on the rear side to the horizontal member 15 laterally shifts to the rear side, so that the locking member 32 is Although it is connected to the horizontal member 15 so as to be rotatable about the connection point, it is integral with the horizontal member 15 and inclined rightward in the drawing. , while being supported by the locking member 32 on the rear side, one edge of the bottom plate portion is pushed against the corresponding convex portion 19 by the biasing force of the first biasing means 28 and guided to the second engaging portion. while moving the second engaging portion upward.
Next, as shown in FIG. 8(C), for example, when the front side is tilted downward, the horizontal member 15 slightly moves in the horizontal direction to the front side with respect to the vertical member 17. The left side surface of the prevention jig 40 abuts against the side surface 19 of the vertical member 17 , thereby restricting further lateral movement to the front side and moving the vertical member 17 to the side opposite to the fall prevention jig 40 . While the L-shaped lower end portion of one of the locking members 32 positioned is locked and supported by the recessed portion of the corresponding convex portion 18, the other locking member 32 positioned on the rear side on the same side as the drop prevention jig 40 with respect to the vertical member 17 is supported. When the engaging member 32 is guided upward while being pressed by the first urging means 28 against the inclined surface of the corresponding projection 18, the left side of the drop prevention jig 40, especially the lower part, moves forward. The convex curved shape allows the other locking member 32 to move upward with the one locking member 32 as a fulcrum.
Next, as shown in FIG. 8(D), the user who is seated on the seat tilts his/her upper body backward, thereby further applying his or her body weight to the rear side, so that the front side of the horizontal member 15 is bent. While the upper and rear sides further incline downward, the fall prevention jig 40 prevents the horizontal member 15 from slipping forward while the curved portion 83 of the side surface abuts the side surface of the vertical member 17 on the front side. While the horizontal member 15 is supported by the locking member 32 on the rear side, the bottom surface of the locking member 32 on the front side is the first locking member that is one step higher than that in FIG. 8(A). It is supported by the joints so that a single backward tilt of the user causes the front side of the cross member 15 to move upwards.
In order to return the seat portion 12 to the original seating level, the seat portion 12 is freed by releasing the locking of the corresponding upright weight bearing portion of the convex portion 18 of each of the pair of locking tools. It can be dropped to a level and locked again on the convex portion 18 at that position.

While seated, the seat 12 may be horizontal.
As described above, as shown in FIG. 9(B), while the horizontal member 15 is movable in the front-rear direction while rising from the sitting level to the standing-up level, for example, the weight is applied to the front side of the seat portion 12. When tilting the front portion downward and tilting the rear portion of the seat portion 12 upward, the connection point of one locking member 32 on the front side moves toward the front portion while the first biasing means 28 pushes the lower portion downward. is pressed against the corresponding convex portion 18 and rotates integrally with the seat portion 12, the other locking member 32 is guided by the second engaging portion 38 with the first engaging portion 34 as a fulcrum. , to the level of the first engaging portion 34 of the upper convex portion 18 . In the meantime, by restricting the movement while moving laterally to the front side, it is possible to prevent one locking member 32 from slipping down. The maximum tilt angle adjusting means 41 limits the tilt angle of the seat portion 12 to a certain limit.
When the other engaging member 32 reaches the level of the first engaging portion 34 of the upper convex portion 18 , the seat portion 12 is held by both engaging members 32 against the first engaging portion 34 of the corresponding convex portion 18 . The user's weight is supported stably.

As shown in FIG. 9(C), by repeating this process, the angle formed by the thigh with respect to the knee becomes obtuse when reaching the stand-up level.

Next, the operation of lowering the convex portion 18 step by step using the lowering adjustment component 200 will be described in detail below with reference to the drawings.
Even when the pair of locking members 32 are constantly pressed against the corresponding protrusions 18 by the first urging means 28, the user alternately places his or her weight on the seat 12 forward and backward. , when ascending, it ascends along the inclined surface of the second engaging portion 38 and ascends while being pressed against the most retracted portion 39 of the first engaging portion 34, and when descending, the first engaging portion Since it is necessary to pull out from the most retracted portion 39 of 34 toward the other locking member 32 and descend along the inclined surface of the second engaging portion 38, descending the convex portion 18 step by step is Where it is difficult, the descent adjustment component 200 enables such descent of the projection 18 step by step, particularly smooth descent.
As a result, for example, when bathing in a bathtub, a bather sits on the seat 12 in a state where the seat 12 is positioned directly below the surface of the hot water so that the user can easily sit down, and the lowering adjustment part 200 allows the user to sit on the seat 12. By lowering the convex portion 18 step by step, particularly smoothly, it is possible to soak in the bathtub up to the chest level without the care of a caregiver. It becomes possible to get out of the bathtub by raising the convex part 18. - 特許庁

With reference to FIGS. 10 to 13, a detailed description will be given below of how the descent adjustment component 200 enables such descent of the convex portion 18 step by step, particularly smooth descent.
FIG. 10 is a diagram showing a state immediately before the front side of the horizontal member 15 is completely lowered by the user shifting the weight to the front side (right side in the drawing) of the horizontal member 15, and FIG. 12 shows a state in which the front side of the horizontal member 15 has been completely lowered by shifting the weight to the front side (right side in the drawing) of the horizontal member 15. FIG. FIG. 13 shows a state in which the rear side of the horizontal member 15 is being lowered by shifting the weight to the left side in the drawing, and FIG. It is a figure which shows the situation where the rear part side of the horizontal member 15 has completed descent|fall by moving.
First, as shown in the lower part of FIG. 7, the switching means is turned on to bring the seating section 12 into a lowering ready state. More specifically, the one end 232 of the manual lever 230 is pivoted upward to release the engagement of the one end 224 of the manual lever 222 with the end face 237 of the recess 236, and the first swing member 206 of the downward adjustment component 200 is disengaged. The lowering adjustment component 200 functions as an engageable position with respect to the corresponding locking member 32 .
As a result, when each of the pair of locking members 32 tilts the horizontal member 15 forward and backward, the tilt angle in the direction away from the corresponding projection 18 (the direction toward the other locking member 32) is limited to a certain limit. It will be ready to descend so that it can be lowered.

As shown in FIG. 10, when the front side of the horizontal member 15 is about to be lowered by the user shifting the weight to the front side (the right side in the drawing) of the horizontal member 15, the horizontal member 15 The locking member 32 on the rear side (left side in the drawing) is positioned at the most retracted portion 39 of the corresponding convex portion 18, as shown in the partially enlarged view, while the locking member 32 on the front side of the horizontal member 15 , descends along the inclined surface of the second engaging portion 38 of the corresponding convex portion 18, just before reaching the most retracted portion 39. As shown in FIG.
Next, as shown in FIG. 11, when the lower end portion 30 of the locking member 32 on the front side of the horizontal member 15 reaches the most retracted portion 39 of the first engaging portion 34 of the corresponding convex portion 18, the lateral The upper end portion 26 of the locking member 32 at the rear portion of the member 15 is pushed back by the action of the lowering adjustment component 200, swings about the connection point 43 with respect to the horizontal member 15, and inclines toward the corresponding convex portion 18. .
More specifically, the angle of the upper end portion 26 of the locking member 32 at the rear of the cross member 15 is inclined in the direction toward the other locking member 32 , so that the other locking member 32 is pulled by the bar spring 218 . It hits the stopper piece 214 at the edge of the first swing member 206 that is biased in the direction opposite to the direction toward which it moves, and is pushed back by the biasing force of the rod spring 218 . A stopper 212 is provided to limit the push-back due to the urging force of the bar spring 218. When the edge of the first swinging member 206 hits the stopper 212, the stopper 212 reaches the limit position of the push-back position of the locking member 32. becomes.
This push-back inclined position is preferably a position in which the locking member 32 is in an upright posture as much as possible. At this time, it is possible to smoothly guide the movement along the second engaging portion 38 from the most protruding edge 35 .
For this purpose, the connection point 43 of the locking member 32 to the horizontal member 15 and the relative position of the horizontal member 15 to the vertical member 17 in the longitudinal direction may be set.

As a result, when the user places his or her weight on the rear side of the seat portion 12 to tilt the rear portion of the horizontal member 15 downward and the front portion thereof upward, the lower end of the locking member 32 at the rear portion of the horizontal member 15 is Since the portion 30 is positioned at the extended proximity position (push-back inclined position) toward the other locking member 32 of the first engaging portion 34 of the corresponding convex portion 18 , the front side of the lateral member 15 is locked. The lower end portion 30 of the member 32 is pressed against the first engaging portion 34 of the corresponding projection 18 by the corresponding first biasing means 28, and the rear portion of the horizontal member 15 is locked and held. The lower end portion 30 of the side locking member 32 can smoothly move downward along the inclined surface of the second engaging portion 38 of the convex portion 18 adjacent to the corresponding convex portion 18 below. .
Firstly, the spring force of the second biasing means 218 and secondly, it is necessary to set the relative position of the stopper 212 to the locking member 32 so that the locking member 32 is in such a push-back inclined position. be.

Next, as shown in FIG. 12, the user puts his or her weight on the rear side of the seat portion 12, thereby tilting the rear portion of the horizontal member 15 downward and the front portion thereof upward.
As a result, the lower end portion 30 of the locking member 32 on the front side of the horizontal member 15 is pressed against the first engaging portion 34 of the corresponding convex portion 18 by the corresponding first biasing means 28 . While being locked and held, the lower end portion 30 of the locking member 32 on the rear side of the horizontal member 15 is pushed against the inclined surface of the second engaging portion 38 of the corresponding convex portion 18 by the first biasing means 28 . moves downward along the inclined surface while being pressed by

Next, as shown in FIG. 13, the lower end portion 30 of the locking member 32 on the rear side of the horizontal member 15 has completely moved downward along the inclined surface of the second engaging portion 38 of the corresponding convex portion 18. That is, it reaches the most retracted portion 39 of the first engaging portion 34 of the corresponding convex portion 18, and the convex portion 18 is lowered by one step.

As described above, the horizontal member 15 , that is, the seat portion 12 on which the user sits is adjusted to the second position of the convex portion 18 by alternately applying the user's weight to the front and back of the seat portion 12 . It is possible to smoothly descend step by step along the inclined surface of the engaging portion 38 .
Regarding each of the maximum inclination angle limiting means 50 and the fall prevention jig 40 used when climbing, the former is required to secure a space from the corresponding vertical member 17 so that the descent adjustment component 200 can work. In the latter case, it is necessary to secure a space necessary for the projection 18 to descend by one step. The latter is from the viewpoint of suppressing lateral movement of the horizontal member 15 and preventing the locking member 32 from detaching from the projection 18. Therefore, it is also necessary when the lowering adjustment component 200 works.

According to the self-weight assisting device 10 having the above configuration, the user sitting on the seat 12 moves the seat 12 holding part 22 up and down by moving the weight on the seat 12 back and forth. At that time, the seat portion 12 holding portion 22 is supported by the pair of upright weight bearing portions 20 at two points, and the engaging member 32 is attached to one of the plurality of protrusions 18 of the pair of upright weight bearing portions 20 . Since the first biasing means 28 is configured to engage the lower end 248 portion 30 and bias the lower end 248 portion 30 toward the convex portion 18, the lower end 248 of the locking member 32 is supported. The seat portion 12 can be raised and lowered by alternately changing the convex portion 18 to the left and right, and there is no need for a drive device such as a drive motor. can be used to automatically raise and lower the seating position without nursing care, and it is possible to contribute to the maintenance of physical strength of the elderly.

According to the weight-utilizing standing-up aid having the above configuration, when the user inclines the upper body forward and puts his or her weight on the front portion of the seat portion 12, the front portion of the horizontal member 15 tilts downward. While moving forward while tilting the rear portion upward, the locking member 32 on the front side of the lateral member 15 is in the locking position against the corresponding convex portion 18 by the first biasing means 28 . , that is, while the horizontal member 15 is supported from its position as a base point, the locking member 32 on the rear side is slanted upward by the first biasing means 28. Resisting the biasing force on the portion 18, the lateral member 15 moves upward from the locked position with respect to the corresponding protrusion 18, the unlocked position, and further to the locked position with respect to the upper protrusion 18. can be supported by
Thus, based on the locking position of one locking member 32, the locking position of the other locking member 32 is moved to the unlocked position, thus to the locking position of the upper projection 18, By repeating forward and backward movements of the upper body of the user, the horizontal member 15, that is, the seat portion 12 supported by the horizontal member 15, alternately moves the front portion and the rear portion upward while also serving as rehabilitation for the user. Thus, the seating portion 12 can be moved upward to assist the user in standing up. In addition, depending on the inclination angle of the lateral member 15, it is possible to raise the convex portion 18 not one step at a time, but a plurality of steps. It is possible to return to

Although the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and changes without departing from the scope of the present invention.
For example, in the present embodiment, the self-weight-utilizing rising aid with the descending adjusting parts has been described, but without being limited to this, the descending-adjusting parts can be easily attached as parts to the self-weight-utilizing rising aid. Therefore, it can be used not only to assist rising but also to smoothly lower the seat portion 12 when descending.
For example, in this embodiment, the pair of upright weight-bearing portions are offset in the left-right direction by interlocking spacers, so that the side portions of the pair of upright weight-bearing portions on which the projections 18 are provided are shifted in the left-right direction. Although it has been described as being arranged, it is not limited to this, and the side portions on which the convex portions 18 of the pair of upright weight bearing portions are provided may be oppositely arranged without being shifted in the left-right direction.

For example, in the present embodiment, when the user repeatedly tilts the seat 12 in the front-rear direction to raise and lower the seat 12, the vertically adjacent protrusions 18 are raised and lowered one step at a time. Without being limited to this, the user may increase the tilt angle at which the seat portion 12 is tilted in the left-right direction to move vertically adjacent protrusions 18 up and down by several steps. can reduce the number of movements of the upper body required to tilt the seat 12 in the horizontal direction.

For example, in the present embodiment, it is applied to a height-adjustable seating device and described as an elevating device using its own weight as an aid for standing up. Alternatively, the user may use the device as a rehabilitation device by repeatedly tilting the upper body forward and backward.
For example, in the present embodiment, it is applied to a height-adjustable seating device and described as a self-weight-utilizing lifting device that assists stand-up independently, but is not limited to this, and can be used in combination with conventional handrails. Then, using this self-weight-utilizing lift, the user repeatedly inclines the upper body back and forth, and when the level of the seating section 12 reaches a certain height, the handrail is used to lift the legs. In situations where it is easy for the child to hold on, you may use the strength of your hands to stand up.

1 is a schematic perspective view showing a self-weight-utilizing stand-up aid with a descent adjustment part according to an embodiment of the present invention; FIG. FIG. 4 is a schematic exploded view showing in detail around the descent adjustment component of the self-weight assisting device with the descent adjustment component according to the embodiment of the present invention. FIG. 4 is a side view showing a vertical member 17 of the self-weight assisting device with a descent adjustment component according to the embodiment of the present invention. FIG. 4 is a detailed view of part A in FIG. 3; FIG. 10 is an outside side view of the self-weight assisting device with descent adjusting parts according to the embodiment of the present invention, just before the front portion of the horizontal member 15 is completely lowered; FIG. 10 is an inner side view of the self-weight assisting device with the descent adjusting part according to the embodiment of the present invention, just before the front portion of the horizontal member 15 is completely lowered; FIG. 4 is a partial plan view showing switching by a switching means in the self-weight assisting device with the descent adjustment component according to the embodiment of the present invention. FIG. 4 is a schematic partial side view showing an operating state of the self-weight-utilizing stand-up aid with the descent adjustment component according to the embodiment of the present invention when the stand-up aid is raised. FIG. 10 is a schematic diagram showing how a user in a sitting posture rises from a sitting state to a standing state in the self-weight assisting device with a lowering adjustment component according to the embodiment of the present invention. FIG. 4 is a schematic partial side view showing an operation state when the self-weight assisting device with the descent adjusting part according to the embodiment of the present invention is lowered. FIG. 4 is a schematic partial side view showing an operation state when the self-weight assisting device with the descent adjusting part according to the embodiment of the present invention is lowered. FIG. 4 is a schematic partial side view showing an operation state when the self-weight assisting device with the descent adjusting part according to the embodiment of the present invention is lowered. FIG. 4 is a schematic partial side view showing an operation state when the self-weight assisting device with the descent adjusting part according to the embodiment of the present invention is lowered.

h Interval C between vertically adjacent convex portions Center of horizontal member D Interval between upright weight bearing portions d Distance between center C and connection point Θ1 Angle of inclination of seating portion Θ2 Final inclination angle of seating portion Θ3 First relationship Inclination angle Θ4 of the joint portion Inclination angle l1 of the second engaging portion Distance l2 between the connecting portion and the connecting point Distance R between the lower end portion and the connecting point Range L of the convex portion 18 Length of the seat portion 12 in the front-rear direction
CH Chair 10 Self-weight type rising aid 12 Seating portion 14 Seating portion support portion 15 Horizontal member 16 Side portion 17 Vertical member 18 Protruding portion 19 Side surface 20 Upright weight bearing portion 21 Space 22 Seating portion holding portion 23 Connecting portion 24 Swinging member 25 connecting portion 26 upper end portion 27 elongated member 28 first biasing means 30 lower end portion 31 L-shaped portion 32 locking member 34 first engaging portion 35 most protruding edge 38 second engaging portion 39 most retracted portion 40 fall prevention jig tool 41 side surface 50 maximum inclination angle adjusting means 51 plate member 53 plate member 55 upper surface 60 upper plate portion 62 lower edge 64 bottom plate portion 66 one edge portion 68 front portion 70 side portion 81 side surface 83 curved portion 85 spacer 200 lowering adjustment component 202 Base member 204 Plane portion 205 Switching means 206 First rocking member 208 Screw 210 Lower end portion 212 Stopper 214 Stopper pad 216 Screw 218 Bar spring 220 Lower end portion 222 First manual lever 224 One end 226 Other end 228 Vertical rotation shaft 230 Second manual Lever 231 Vertical spring 232 One end 234 Other end 236 Recess 237 End surface 238 First manual lever support member 240 Upper surface 242 Upper surface 244 Second rocking member 246 Upper end 248 Lower end 250 Intermediate portion 252 Bracket 254 Connecting member 256 Upper end 258 Lower end 260 Clip

Claims (18)

A pair of vertical members each having a plurality of vertically aligned protrusions on its sides, wherein the plurality of protrusions on one side and the plurality of protrusions on the other side are arranged to face each other at a predetermined interval in the horizontal direction. a pair of longitudinal members;
a horizontal member that supports a seat on which a user sits, the horizontal member extending in the front-rear direction so as to straddle between the pair of vertical members so that the center of the horizontal member is located between the pair of vertical members;
a pair of locking members arranged opposite to each other with respect to the center of the horizontal member, provided so as to cross the horizontal member in the vertical direction, and supporting the horizontal member with respect to the vertical member;
a first biasing means for biasing each of the pair of locking members toward each of the plurality of recesses of the corresponding vertical member;
Each of the pair of locking members is arranged between a locking position receiving the user's own weight and a locking release position with respect to each of the plurality of recesses of the corresponding vertical member, centering on the connection point with the horizontal member. , is pivotably provided,
The convex portion has a serrated shape having a first engaging portion extending from the most retracted portion to the most projecting edge 35 and a second engaging portion inclined upward from the most retracted portion to the most projecting edge 35. A lowering adjustment part applicable to a mold rising aid,
A base member having a flat portion exposed from between the pair of vertical members and slidable in the vertical direction along the pair of vertical members,
Furthermore, a connecting member that connects the horizontal member and the base member and is connected to the horizontal member from above is provided,
The base member has
In each of the pair of locking members, an inclination push-back means for pushing back the inclination of the upper end of one locking member toward the other locking member;
a switching means for turning on and off the push-back function of the tilt/tilt push-back means;
a stopper for limiting the push-back of the tilt-tilt push-back means;
When the horizontal member is tilted in the front-rear direction, the stopper pushes back the tilt push-back means at a position where the lower end of one of the upper locking members is separated from the most protruding edge 35 toward the other locking member. positioned on the base member to stop,
By turning on the switching means, the lateral member is tilted in the front-rear direction so that the upper end of each of the pair of locking members is tilted away from the corresponding protrusion against the biasing force of the first biasing means. At this time, the tilting and tilting push-back means is configured to push out the upper end of the engaging member in the opposite direction so that the lower end of the locking member is separated from the corresponding first engaging portion,
Accordingly, when the seat portion is lowered, by turning on the switching means, the lower end of one of the lower locking members when the horizontal member is tilted in the front-rear direction is engaged with the second locking portion of the corresponding convex portion. When it moves downward along the joining portion and reaches the most retracted portion, the lower end of the other locking member is separated from the most retracted portion of the first engaging portion of the corresponding convex portion toward the one locking member. A user sitting on the seat repeatedly shifts the weight on the seat in the front-rear direction so that the protrusions that are locked by the lower ends of the locking members are engaged with the pair of locking members. A lowering adjustment component, characterized in that the seating portion can be lowered step by step along a plurality of projections through alternating stop members. A pair of vertical members each having a plurality of vertically aligned protrusions on its sides, wherein the plurality of protrusions on one side and the plurality of protrusions on the other side are arranged to face each other at a predetermined interval in the front-rear direction. a pair of longitudinal members;
a horizontal member that supports a seat on which a user sits, the horizontal member extending in the front-rear direction so as to straddle between the pair of vertical members so that the center of the horizontal member is located between the pair of vertical members;
a pair of locking members arranged opposite to each other with respect to the center of the horizontal member, provided so as to cross the horizontal member in the vertical direction, and supporting the horizontal member with respect to the vertical member;
a first biasing means for biasing each of the pair of locking members toward each of the plurality of recesses of the corresponding vertical member;
Each of the pair of locking members is arranged between a locking position receiving the user's own weight and a locking release position with respect to each of the plurality of recesses of the corresponding vertical member, centering on the connection point with the horizontal member. , is pivotably provided,
The convex portion has a serrated shape having a first engaging portion extending from the most retracted portion to the most projecting edge 35 and a second engaging portion inclined upward from the most retracted portion to the most projecting edge 35. A mold rising aid,
Furthermore, having the lowering adjustment component according to claim 1,
As a result, when the seat portion is lowered, the switching means is turned on so that the user sitting on the seat portion repeatedly shifts his or her weight on the seat portion in the front-rear direction. By alternately changing the convex portion to which the lower end is locked between the pair of locking members, the lower end of the locking member is guided by the second engaging portion while smoothly moving the convex portion step by step to the first engaging portion. to
When the seat portion is raised, the switching means is turned off, so that the user sitting on the seat portion repeatedly shifts the weight of the seat portion in the extending direction of the seat portion holding portion. A self-weight assisting device for raising a seat, characterized in that a seat portion can be raised and lowered by alternately changing a convex portion to which a lower end of a member is locked between a pair of locking members. Each of the pair of vertical members is a member having an L-shaped cross-section composed of a front portion extending in the front-rear direction and side portions extending in the left-right direction. A plurality of protrusions fixedly spaced apart from each other and formed on the side edges are offset in the left-right direction,
The lowering adjustment component has a flat plate shape with flat surfaces facing each other, and is inclined in a predetermined left-right direction with respect to the pair of vertical members in a state in which the pair of locking members and the horizontal member are assembled to the pair of vertical members. 3. The self-weight assisting device for standing up according to claim 2, which can be inserted into the gap and assembled. 3. The self-weight assisting device for standing up according to claim 2, wherein the lower end of the connecting member is connected to the swinging center position of the horizontal member. The tilting push-back means is provided on the base member above the upper end of the locking member on each of the plane portions, and is capable of swinging between an engaging position with the locking member and a non-engaging position. a swinging member;
3. The dead weight assisting device according to claim 2, further comprising second biasing means for biasing the first swing member toward the engaging position. The second urging means is a cantilever-shaped bar spring extending vertically on the portion of the flat portion on the opposite side of the corresponding convex portion of the locking member, having a fixed upper end and a lower end. 6. A self-weight type rising aid according to claim 5, which is engageable with the first swinging member. the switching means has a first swinging member moving member that moves the first swinging member to the disengaged position against the biasing force of the first biasing means on each of the planar portions;
a non-engaging position holding means for engaging the upper end of the first swinging member moving member to hold the first swinging member at the non-engaging position;
unlocking means for unlocking the upper end portion of the first swing member moving member by the non-engagement position holding means;
The weight-utilizing standing-up aid according to claim 5, comprising: in each of the planar portions a stopper is fixedly positioned above the corresponding locking member;
The first swinging member is provided with a stopper pad that contacts the stopper at the edge on the side of the corresponding locking member,
8. The self-weight assisting device according to claim 7, wherein the stopper rest has a vertical length below a position where it contacts the stopper so as to cover a vertical movement range of the corresponding engaging member. The first swinging member moving means is a second swinging member having an intermediate portion pivotally attached to the planar portion of the base member and extending vertically and swingable about the intermediate portion,
The upper end of the second swinging member can be locked by non-engagement position holding means, and the lower end of the second swinging member is biased toward the locking position by second biasing means. A self-weight standing-up aid according to claim 7, wherein the non-engagement position holding means is a first manual lever capable of laterally swinging around a vertical rotation shaft provided on the upper surface of the base member;
the first manual lever is provided such that each end engages the upper end of the corresponding second swing member;
the unlocking means is a second manual lever that can swing vertically, the second manual lever having a recess on the lower edge thereof to which the first manual lever can be locked;
the first manual lever is biased toward the unlocked position by the second swinging member through the biasing force of the second biasing means;
By swinging the second manual lever upward, the first manual lever is moved to the unlocked position, and by swinging the first manual lever until it is locked in the recess, the first manual lever is 10. The self-weight lifting aid according to claim 9, which is held in a locking position. 11. The self-weight assisting device for rising according to claim 10, wherein the manual operation portion of each of the first manual lever and the second manual lever is provided on the seat portion side. The locking member has an L-shaped vertical cross section including an upper plate portion arranged parallel to the vertical member and a bottom plate portion extending from a lower edge of the upper plate portion in a direction intersecting the vertical member,
The upper portion of the upper plate portion is connected to the first biasing means, and the lower surface of the bottom plate portion constitutes a portion for transmitting the user's own weight to the corresponding convex portion and extends from the lower edge of the upper plate portion of the bottom plate portion. 3. The self-weight assisting device according to claim 2, wherein one edge constitutes an engaging portion for the second engaging portion of the corresponding convex portion. The horizontal member is composed of a pair of plate members facing each other with their upper and lower surfaces spaced apart in the left-right direction. 3. The self-weight-utilizing riser according to claim 2, wherein the pair of plate members are arranged in a direction perpendicular to the upper and lower surfaces with a predetermined gap therebetween, and the seating portion is arranged across the two pairs of plate members. Auxiliary. Each of the pair of vertical members is a member having an L-shaped cross-section composed of a front portion extending in the front-rear direction and side portions extending in the left-right direction. A plurality of protrusions fixedly spaced apart from each other and formed on the side edges are offset in the left-right direction,
3. The weight-utilizing rising aid according to claim 2, wherein the descent adjustment component is accommodated in an internal space formed by a pair of vertical members. When the user tilts the seat using its own weight, one locking member on the lower side of the tilt is locked to the most retracted portion of the corresponding convex portion of the one vertical member on the lower side of the tilt. When the other locking member on the upper side of the inclination moves upward while being guided by the second engaging portion of the corresponding convex portion of the other vertical member on the upper side of the inclination, lateral displacement of the horizontal member to the lower side of the inclination causes 3. The self-weight assisting device for rising according to claim 2, wherein a jig for preventing the fall of the seat portion for preventing one of the locking members from being locked and disengaged is provided on the horizontal member. 3. A self-weight utilization according to claim 2, wherein a maximum inclination angle adjusting member is provided on the upper surface of the horizontal member, which is capable of adjusting the inclination angle of the horizontal member by making it possible to adjust the distance between it and the outer surface of the vertical member. Mold rise aid. The connection positions of the pair of locking members with respect to the horizontal member are arranged symmetrically with respect to the center of the horizontal member, and the distance between the connection positions is the distance between the first locking portions of the vertically adjacent projections and/or 3. The dead weight assisting device according to claim 2, which is set according to the maximum possible inclination angle of the seating portion by the user and/or the spacing between the pair of locking members. 3. The self-weight-utilizing riser according to claim 2, wherein the seat portion, the vertical member, the horizontal member, the pair of locking members, and the lowering adjustment component are made of hard resin having a strength capable of supporting the weight of the user. Auxiliary.

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