WO2020250767A1 - 介助装置における回動連結構造 - Google Patents

介助装置における回動連結構造 Download PDF

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Publication number
WO2020250767A1
WO2020250767A1 PCT/JP2020/021913 JP2020021913W WO2020250767A1 WO 2020250767 A1 WO2020250767 A1 WO 2020250767A1 JP 2020021913 W JP2020021913 W JP 2020021913W WO 2020250767 A1 WO2020250767 A1 WO 2020250767A1
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WO
WIPO (PCT)
Prior art keywords
locking
rotation
connection structure
assistance device
swing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/021913
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English (en)
French (fr)
Japanese (ja)
Inventor
哲生 飛川
秀靖 細谷
怜子 庄子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naka Corp
Original Assignee
Naka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naka Corp filed Critical Naka Corp
Priority to CN202080037633.3A priority Critical patent/CN113853144B/zh
Publication of WO2020250767A1 publication Critical patent/WO2020250767A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K17/00—Other sanitary equipment not covered by the other groups of this subclass ; Holders for toilet brushes
    • A47K17/02—Body supports, other than seats, for closets, e.g. handles, back-rests, foot-rests; Accessories for closets, e.g. reading tables
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/14—Standing-up or sitting-down aids

Definitions

  • the present disclosure relates to a rotation connection structure in an assistance device that can lock rotation at a predetermined position.
  • Patent Document 1 discloses an assisting device when a person to be assisted such as a person with a disability or an elderly person is seated on a seated toilet (Western style toilet).
  • the elbow rest portion (25) rotatably held around the support shaft (12) with respect to the support column (2) is in front of the person being assisted seated on the seated toilet bowl. It is possible to selectively take a use position located at a right angle and a shunt position rotated 90 degrees upward from the use position.
  • a lock mechanism is provided to prevent the elbow rest portion (25) from being rotated toward the use position at the escape position.
  • one end of the link (14) is rotatably connected to the elbow rest (25) with a pin (13), and a pin provided at the other end of the link 14 is provided.
  • (16) is slidably fitted into a long hole (23) formed in a guide member (15) fixed to a support column (2).
  • the pin (16) is slid in the elongated hole (23) according to the rotation of the elbow rest portion (25).
  • the locking portion (20) of the release lever (18) provided swingably on the guide member 15 slides the pin (16).
  • the mechanism for locking the rotation of the elbow rest portion (25) has a link (14) and a guide member (15) having an elongated hole, and the elbow rest portion (25) has a guide member (15). ), Since it is necessary to dispose of it so as to extend long to a position far away from the support shaft (12) which is the center of rotation, the size of the support shaft (12) must be considerably large.
  • the embodiment of the present invention takes into consideration the above circumstances, and the first object thereof is to reduce the size as a whole while allowing the rotating members constituting the assisting device to be locked at a predetermined rotating position. It is an object of the present invention to provide a rotary connection structure in an assisting device made possible. A second object of the embodiment of the present invention is to provide an assisting device having the above-mentioned rotary connection structure.
  • the following solution method is adopted in the embodiment of the present invention. That is, It is a rotary connection structure in the assistance device arranged in the vicinity of the seat where the person being assisted is seated.
  • a connecting bracket having a fixed portion and a rotating holding portion, The first member fixed to the fixing portion of the connecting bracket and A use position that has an assistance portion and is rotatably held by the rotation holding portion of the connecting bracket to assist a person to be assisted seated on the seat portion by the assistance portion, and a predetermined position from the use position.
  • a second member that can selectively take a retreat position that has been rotated by an angle, and A locking mechanism for locking the rotation of the second member between the used position and the shunting position at the used position or at least one of the shunting positions.
  • the locking mechanism has a first locking portion formed on the outer peripheral surface of a portion of the second member held by the rotation holding portion, and a swinging member swayably held by the connecting bracket. And an urging means for urging the rocking member in a predetermined direction.
  • the swing member includes a second locking portion that is engaged with and disengaged from the first locking portion at a lock position where the rotation of the second member should be locked, and an operating portion that is manually operated.
  • the urging means urges the swing member in a direction in which the second locking portion is engaged with the first locking portion.
  • the second member is rotatable between the used position and the shunting position. I am doing it.
  • the second member is rotatably connected to the first member via a connecting bracket. Then, while forming the first locking portion in the portion of the second member that is rotatably held by the connecting bracket, the swing having the second locking portion engaged with and disengaged from the first locking portion. Since the member is held by the connecting bracket, the rotary connecting structure portion having a locking function can be significantly reduced in size as a whole.
  • the first locking portion is formed as a locking groove.
  • the rotation of the second member is locked by fitting the second locking portion to the locking groove. Can be done.
  • the first locking portion can be formed by the locking groove.
  • the locking groove as the first locking portion is locked by fitting the second locking portion formed on the swing lever, but the locking grooves are engaged on both sides in the rotation direction. Since it has a pair of inner wall surfaces constituting the stop step portion, the second member can be locked in both directions by the second locking portion.
  • first locking portion and the second locking portion of the swinging member can be positioned within the length range of the rotation holding portion, which is even more preferable in terms of miniaturization.
  • the second member constitutes a main body portion having the assisting portion and a rotating portion fixed to the main body portion and held by the rotating holding portion, and a shaft member on which the first locking portion is formed. And have, can be.
  • the portion to be rotated is separately formed of a shaft member to ensure smooth rotation and to easily form the first locking portion.
  • a first stopper portion and a second stopper portion are formed on the outer peripheral surface of the second member at intervals in the circumferential direction.
  • a first step portion and a second step portion are formed on the inner peripheral surface of the rotation holding portion at intervals in the circumferential direction.
  • the other position between the used position and the shunting position is an unlocked position that is not locked by the locking mechanism.
  • the second locking portion is brought into contact with the outer peripheral surface of the second member from the circumferential direction at the unlocked position.
  • a locking step is formed to regulate further rotation of the two members. Can be done. It is preferable to effectively use the second locking portion to tightly regulate the situation where the second member is rotated beyond the unlocked position. In particular, it is preferable to reliably prevent the second member from being rotated beyond a predetermined rotation angle from the unlocked position side when a large external force is received from the person being assisted or the like at the unlocked position. It becomes.
  • the other position between the used position and the shunting position is an unlocked position that is not locked by the locking mechanism.
  • a positioning surface is formed on the outer peripheral surface of the second member so that the tip surface of the locking portion abuts at the unlocked position. Can be done. In this case, the second member can be stably held at the unlocked position by the contact between the tip surface of the locking portion and the positioning surface.
  • the fixing portion, the rotation holding portion, and the swinging member each have a shape extending in the rotation axis direction which is the rotation center of the second member.
  • the fixing portion, the rotation holding portion, and the swing member are set so that their end faces in the direction of the rotation axis are substantially flush with each other. Can be done. In this case, the appearance is improved, and it is preferable in terms of safety measures to prevent large protrusions and the like from being present on each end face.
  • the assistance device has the above-mentioned rotary connection structure.
  • the rotary connection structure having a locking function in the assistance device can be significantly miniaturized as a whole. Further, it is possible to provide an assistance device having a miniaturized rotary connection structure.
  • FIG. 2 is a side view showing a state in which the person being assisted seated on the seated toilet is held in a state where the side frame portion is tilted forward from the state of FIG.
  • the main part side view which shows the swing angle change mechanism part.
  • FIG. 6 is a cross-sectional view corresponding to line X7-X7 in FIG. The cross-sectional view which shows the detail of the cushion member provided in a bearing member.
  • FIG. 8 is a cross-sectional view corresponding to FIG. 8 showing that the cushion member of FIG. 8 can swing within a predetermined angle range.
  • FIG. 8 is a view of the cushion member shown in FIG. 8 as viewed from the side serving as a mounting surface to the bearing member.
  • FIG. 5 is a cross-sectional view showing a state in which the swing toward the use position is locked by the lock mechanism when the front arm portion is in the retracted position extending in the vertical direction.
  • a cross-sectional view corresponding to FIG. 11 showing a state when the front arm portion is in the used position.
  • the perspective view which shows the main part related to the lock mechanism among the front arm part.
  • the main part perspective view which shows the lock mechanism which locks the front arm part.
  • the second embodiment of this invention is shown, and the side view corresponding to FIG. It shows the 3rd Embodiment of this invention, and is the side view corresponding to FIG.
  • 1 to 3 show an example of the assistance device K according to the embodiment of the present invention.
  • 1 to 3 show a state in which the assistance device K is arranged with respect to the seated toilet bowl 1.
  • the assistance device K is roughly divided into a base member 10, a pair of left and right side frame portions 20 as a first member, a pair of left and right front arm portions 30 as a second member, and a rear frame portion 40. It has a connecting mechanism 50 and.
  • a bearing member is formed by the side frame portion 20 and the front arm portion 30.
  • the base member 10 is connected to a pair of left and right vertical rod-shaped members 11 extending in the vertical direction, a horizontal rod-shaped member 12 extending in the left-right direction to connect the upper ends of the pair of left and right vertical rod-shaped members, and a lower end of the vertical rod-shaped member 11. It has a mounting plate portion 13 and a gate-shaped portion as a whole. The rear portion of the seated toilet bowl 1 is arranged in the space below the horizontal bar-shaped member 12 between the pair of left and right vertical bar-shaped members 11.
  • the base member 10 has a structure of a seated toilet bowl 1, that is, a floor-standing type that is not affected by a flush valve or a low tank.
  • the base member 10, more specifically, the mounting plate portion 13 of the base member 10 may be arranged in the vicinity of the seated toilet bowl 1 and may be fixed to the seated toilet bowl 1 or to the floor surface. Can be fixed.
  • a pair of left and right side frame portions 20 are provided, and are formed by bending a pipe material.
  • the pipe material described below is composed of, for example, a metal core material such as SUS and a synthetic resin coating material, but is not limited thereto.
  • Each side frame portion 20 is roughly divided into an upper frame portion 21 extending in the front-rear direction, and a lower frame portion 22 extending downward from the front end of the upper frame portion 21 and then extending rearward. Then, as will be described later, the rear end portion of the lower frame portion 22 is swingably attached to the vertical rod-shaped member 11 via the swing connecting mechanism 50.
  • the rear end portions of the upper frame portion 21 are connected to each other by the rear frame portion 40 extending in the left-right direction in a horizontal state.
  • the side frame portion 20 and the rear frame portion 40 are integrally formed of the same pipe material.
  • the pair of left and right side frame portions 20 are connected by the rear frame portion 40 to improve the rigidity as a whole, and by swinging one side frame portion 20, the other side is interlocked with this.
  • the square frame portion 20 is also oscillated.
  • the swing connecting mechanism 50 has a connecting bracket 51 fixed to the vertical rod-shaped member 11 in the base portion 10.
  • the side frame portion 20, more specifically, the rear end portion of the lower frame portion 22 of the side frame portion 20 is oscillatingly connected to the connecting bracket 51 by the connecting portion 52 in the vertical direction.
  • the connecting portion 52 can be formed by an appropriate method such as being formed by a connecting pin with a screw and a nut screwed therein.
  • the connecting bracket 51 is formed with a plate-shaped upper stopper portion 53 and a pin-shaped lower stopper portion 54.
  • the stopper portions 53 and 54 are set to form an angle of approximately 45 degrees with respect to the connecting portion 52.
  • the side frame portion 20 is swung around the connecting portion 52 so that the forward downward angle (forward tilt angle) can be changed.
  • the rear end portion of the lower frame portion 22 comes into contact with the upper and lower stopper portions 53 or 54, swinging beyond the stopper portions 53 and 54 is restricted.
  • the upper frame portion 21 is in a horizontal state and is in a basic posture state extending in the front-rear direction.
  • a swing angle changing mechanism 60 for changing the swing angle of the side frame portion 20 is provided only for one side frame portion 20.
  • the swing angle changing mechanism 60 has a locking member 61 integrated with the connecting bracket 51.
  • the locking member 61 is formed of, for example, a metal such as SUS or a synthetic resin, and is fixed to the connecting bracket 51 by a fixture 62.
  • the locking member 61 has an arcuate surface centered on the connecting portion 52, and a plurality of locking recesses 63 are formed on the arcuate surface along the circumferential direction at equal angles. There is. A locking protrusion 64 is located between the adjacent locking recesses 63.
  • the engaging member 65 is slidably held in the rear end portion of the lower frame portion 22 in the side frame portion 20.
  • the engaging member 65 has a plate shape and extends from the main body portion 65a sliding with respect to the inner surface of the lower frame portion 22 toward the rear side of the main body portion 65a, that is, toward the back side of the lower frame portion 22. It has an extension portion 65b provided.
  • the extending portion 65b is formed with an elongated guide hole 65c extending in the sliding direction of the engaging member 65.
  • an engaging protrusion 65d extending toward the locking member 61 is formed from the main body 65a.
  • the engaging protrusion 65d can be fitted (locked) and disengaged (unlocked) from the locking recess 63 according to the sliding of the engaging member 65.
  • a guide pin 66 penetrating the guide hole 65c is fixed to the lower frame portion 22.
  • the engaging member 65 is displaceable within the range in which the guide pin 66 slides in the guide hole 65c.
  • 6 and 7 show a state in which the engaging member 65 is most projected from the lower frame portion 22 at the locking position.
  • the guide pin 66 penetrates the guide hole 65c with almost no rattling, and the situation in which the plate-shaped engaging member 65 rotates in the circumferential direction of the lower frame portion 22 is regulated.
  • a return spring 67 made of a coil spring as an urging means is arranged in the lower frame portion 22.
  • the return spring 67 is located between the guide pin 66 and the main body portion 65a, and is arranged so as to surround the extension portion 65b.
  • the return spring 67 constantly urges the engaging member 65 in a direction protruding from the lower frame portion 22, that is, in a direction of being fitted into the locking recess 64.
  • the operating member 68 is slidably held in the vertical direction at a portion of the lower frame portion 22 that extends in the vertical direction.
  • the operating member 68 has a tubular portion 68a that is slidably fitted to a portion of the lateral frame portion 20 that extends in the vertical direction, and an operating portion 68b that is integrated with the tubular portion 68a.
  • a guide pin 69 integrated with the tubular portion 68a is slidably fitted in a guide hole 70 formed in the side frame portion 20 and extending shortly in the vertical direction.
  • the guide pin 69 and the extension portion 65b of the engaging member 65 are connected by a connecting wire 71 arranged in the lower frame portion 22.
  • the upper side surface is an inclined surface 64a that gradually downwards toward the tip.
  • the lower side surface of the locking convex portion 64 has a shape that stands out at a substantially right angle, and an inclined surface is not formed.
  • the side frame portion 20 is slightly lowered forward from the states shown in FIGS. 4 and 5, and the engaging protrusion 65d of the engaging member 65 is fitted and locked in the locking recess 63. Is assumed. In this state, even if a large external force is applied to swing the side frame portion 20 in the forward downward direction, that is, in the counterclockwise direction in FIGS. 4 and 5, the locking convex portion 64 swings the side frame portion 20. Is tightly regulated.
  • the front arm portion 30 is formed in a substantially L shape by bending the pipe material. That is, the front arm portion 30 has a rotating portion 31 along the upper arm portion 21 of the side frame portion 20, and a main body portion 32 extending from the rotating portion 31 by being bent by approximately 90 degrees. As will be described later, the main body portion 32 is an assisting portion that prevents the person being assisted seated in the seated toilet bowl 1 from falling forward when the front arm portion 30 is in the used position.
  • the front arm portion 30 is provided with respect to the left and right side frame portions 20, respectively.
  • the rotating portion 31 is rotatably attached to the upper arm portion 21.
  • the front arm portion 30 has a use position in which the main body portion 32 extends in the horizontal direction, that is, a position shown by a solid line in FIGS. 1 and 2, and a shunting position in which the tip portion thereof faces upward, that is, FIG.
  • the position indicated by the alternate long and short dash line in FIG. 2 can be selectively taken.
  • the swing of the front arm portion 30 can be locked at the shunting position by the lock mechanism 90 described later.
  • the distance between the pair of left and right vertical rod-shaped members 11 in the base member 10 is set considerably larger than the width of the seated toilet bowl 1 from the viewpoint of versatility and the like. Therefore, in the front view shown in FIG. 1, the pair of left and right side arms 20 are slightly inclined so that the width gradually narrows toward the upper side. Further, a gap adjusting member 14 for filling a gap between the seated toilet bowl 1 and the left and right vertical rod-shaped members 11 is attached.
  • the cushion member 80 is attached to the pair of left and right main body portions 32 (see FIGS. 1 to 3).
  • the mounting structure of the cushion member 80 will be described with reference to FIGS. 8 to 10.
  • the cushion member 80 includes a substrate 81 formed of, for example, an aluminum alloy or a synthetic resin, and an elastic member 82 having elasticity such as rubber or urethane, which is integrated with the substrate 81 so as to cover one surface side of the substrate 81.
  • the substrate 81 has a curved portion 81a curved in an arc shape and a pair of flange portions 81b extending from each end of the curved portion 81a.
  • the substrate 81 can be formed, for example, by injection molding a synthetic resin.
  • the curved portion 81a is curved to a size exceeding 180 degrees, and the opening width thereof is smaller than the outer diameter of the main body portion 32.
  • the cushion member 80 is attached to the main body 32 by elastically deforming the curved portion 81a and fitting it into the main body 32 in a state where the opening width is widened.
  • the elastic member 82 of the cushion material 80 is arranged so as to face the person to be assisted P seated on the seated toilet bowl 1.
  • the board 81 can swing by a predetermined angle with respect to the main body 32. That is, a guide pin 83 made of a bolt is fixed to the main body 32, and a part of the guide pin 83 protrudes from the outer surface of the main body 32. On the other hand, a guide hole 81c extending in the circumferential direction is formed on the inner surface of the curved portion 81a of the substrate 81. The guide pin 83 projects into the guide hole 81c.
  • the cushion member 80 can swing with respect to the main body 32 within a range in which the guide pin 83 can move in the guide hole 81c. In FIG. 9, the cushion member 80 at the end of the swing stroke is shown by a chain double-dashed line. Since the guide pin 83 projects into the guide hole 81c, the cushion member 80 is restricted from being displaced in the axial direction of the main body portion 32.
  • the cushion member 80 attached to the main body 32 softly receives the upper body of the person being assisted and prevents the person being assisted from suffering pain or the like.
  • the cushion member 80 attached to the main body 32 is appropriately swung in response to a change in the swing angle of the side frame portion 20 or a difference in the physique of the person being assisted, so that the elastic member 82 is always in a preferable posture state for bearing. can do.
  • the cushion member 80 is also attached to the rear frame portion 40 in the same manner as shown in FIGS. 8 and 9.
  • the cushion member 80 attached to the rear frame portion 40 can swing in the vertical direction.
  • the cushion member 80 attached to the rear frame portion 40 softly receives the upper body of the person being assisted, which may cause pain or the like to the person being assisted. Be prevented.
  • the cushion member 80 attached to the rear frame portion 40 is appropriately swung in response to a change in the leaning angle to the rear frame portion 40, a difference in the physique of the person being assisted, or the like, and the elastic member 82 is always preferable for bearing. It can be in a posture state.
  • the cushion member 80 is also attached to the upper frame portion 21, more specifically, the connecting bracket 100 to be described later, which is fitted to the upper frame portion 21 (FIGS. 11 and 12). reference).
  • the cushion member 80 for the upper frame portion 21 is a fixed type that does not swing in the vertical direction. As a result, when the person being assisted is about to fall sideways, the cushion member 80 attached to the upper frame portion 21 softly receives it.
  • the shunting position is the locked position where the lock is performed
  • the used position is the unlocked position where the lock is not performed.
  • the rear end of the rotating portion 31 of the front arm portion 30 is composed of a shaft-shaped connecting member 33 (see FIG. 13).
  • the connecting member 33 is formed by, for example, extruding an aluminum alloy, and is fixed to a rotating portion 31 made of a pipe material by a fixture 34 such as a bolt.
  • the cross-sectional shape of the connecting member 33 is shown in FIGS. 11 and 12. As the cross-sectional shape of the connecting member 33 shows, the connecting member 33 has a locking groove 33a as a first locking portion, and a first stopper portion 33b and a second stopper portion 33c, which are formed of locking steps, respectively. ing.
  • a connecting bracket 100 is used for the front arm portion 30, more specifically, the rotating portion 31 of the front arm portion 30 and the side frame portion 20, and more specifically, the upper arm portion 21 of the side frame portion 20.
  • the connecting bracket 100 the first tubular portion 101 as a rotation holding portion into which the rotating portion 31 of the front arm portion 30 is rotatably fitted and the upper arm portion 31 of the side frame portion 20 are fitted.
  • It has a second tubular portion 102 as a fixed portion to be combined.
  • the connecting bracket 100 is a portion of the second cylinder portion 102 and has a structure in which the first member 100A and the second member 100B are split in two. Then, the two members 100A and 100B are fastened by the bolt 103 and the nut 104 penetrating the upper arm portion 21. Further, the upper arm portion 21 and the connecting bracket 100 are integrated by the bolt 103 and the nut 104.
  • a swing lever 110 as a swing member is swingably attached to the connecting bracket 100 by a pin member 111.
  • One end of the swing lever 110 is a locking portion 110a as a protruding second locking portion.
  • the second locking portion 110a can be fitted (locked) to the locking groove 33a of the connecting member 33 in a state of penetrating the through hole 101c formed in the first tubular portion 101.
  • the swing lever 110 is urged by a spring 112 as an urging means in a direction in which the locking portion 110a fits into the locking groove 33a.
  • the spring 112 is composed of a leaf spring and is interposed between the swing lever 110 and the connecting bracket 100.
  • the swing lever 110 has an operation unit 110b that is manually operated. By operating the operating portion 110b clockwise in FIG. 11, the locking portion 110a is released from being fitted to the locking groove 33a (unlocking).
  • the through hole 101c formed in the first tubular portion 101 is in the form of a slit extending over the entire length of the first tubular portion 101 in the axial direction in the embodiment, but is not limited to this.
  • the through hole 101c may have a shape in which at least one end thereof is closed in the longitudinal direction, that is, in the axial direction of the connecting member 33. That is, both ends may be closed, or only one of the ends may be closed.
  • the first step portion 101a and the second step portion 101b are formed on the inner surface of the first cylinder portion 101 of the connecting bracket 100 at intervals in the circumferential direction formed of the locking step portions.
  • the first stopper portion 33b of the connecting member 33 hits the first stepped portion 101a. It is regulated that the front arm portion 30 is further rotated beyond the shunting position due to contact.
  • the inner wall surface on one side of the locking groove 33a, which is also the locking step portion is in contact with the second locking portion 110a of the swing lever 110 from the circumferential direction, and exceeds the shunting position. Therefore, the situation in which the front arm portion 30 is further rotated is more strongly regulated, and it is also preferable in that the load applied to the connecting bracket 100 due to the rotation regulation is dispersed.
  • the second stopper portion 33c of the connecting member 33 hits the second step portion 101b. It is regulated that the front arm portion 30 is further rotated beyond the used position due to contact. At this used position, the first stopper portion 33b, which is the locking step portion, is in contact with the second locking portion 110a of the swing lever 110 from the circumferential direction, and the front arm portion 30 exceeds the used position. It is also preferable in that the situation in which the lever is further rotated is more strongly regulated, and the load applied to the connecting bracket 100 due to the rotation regulation is dispersed.
  • the operation 110b of the swing lever 110 is operated to lock the locking portion 110a of the connecting member 33. This may be done by separating from the groove 33a.
  • the tip surface of the locking portion 110a is a substantially flat surface. Further, a predetermined position on the outer peripheral surface of the connecting member 33 is a positioning surface 33d formed of a substantially flat surface. In FIG. 12 corresponding to the use position which is the unlock position, the tip surface of the locking portion 110a is in contact with the positioning surface 33d of the connecting member 33, and the front arm is brought into contact with the urging force of the spring 112. The portion 30 is stably held in the used position. However, by applying an appropriate external force toward the retreat position to the front arm portion 30 in the used position, it is easy to set the front arm portion 30 in the retreat position without operating the swing lever 110. Is.
  • the shape of the tip surface of the locking portion 110a and the positioning surface 33d can be set as follows. That is, one of the tip surface of the locking portion 110a and the positioning surface 33d may be a slightly convex convex surface, and the other may be a substantially flat surface or a slightly concave concave surface.
  • the locking portion 110a of the swing lever 110 is brought into contact with the first stopper portion 33b on the outer peripheral surface of the connecting member 33.
  • the connecting member 33 is restricted from being rotated counterclockwise in FIG. That is, the situation in which the connecting member 33 is rotated in the direction opposite to the direction toward the locked position beyond the unlocked position is more strongly regulated by also utilizing the locking portion 110a.
  • the first stopper portion 33b is brought into contact with the first step 101a formed on the connecting bracket 100 and with the locking portion 110a in both directions of the connecting member 33 (front arm portion 30). It has the function of two locking steps that regulate the rotation of the.
  • the connecting bracket 110 is restricted from being displaced in the axial direction with respect to the connecting member 33. That is, although not shown, a restricting member with which the side surface of the connecting bracket 10 is in contact is attached to the tip of the connecting member 33, and one end surface of the connecting member 110 is restricted from coming off from the connecting member 33. ing. Further, the other end surface of the connecting bracket 110 is in contact with the end surface of the rotating portion 31 made of a pipe material.
  • the connecting bracket 100 more specifically, the first cylinder portion 101 and the second cylinder portion 102 of the connecting bracket 100, and the swing lever 110 are, as shown in FIG. 14, in the axial direction of the connecting member 33.
  • the end faces are set to be flush with each other. As a result, the appearance is improved, and it is preferable in terms of safety measures to prevent large protrusions and the like from being present on each end face.
  • the front arm portion 30 in the shunting position is used by a caregiver or a person being assisted as a handrail, it is conceivable that a large external force acts on the locking groove 33a and the locking portion 110a.
  • the front arm portion 30 is reliably placed in the shelter position against the external force. It can be locked.
  • the lock strength at the lock position can be easily set by the method of setting the length of the locking groove 33a and the length of the locking portion 110a corresponding thereto.
  • the front arm portion 30 is in the shunting position, that is, the state shown by the alternate long and short dash line in FIGS. 1 and 2, and the front of the seated toilet bowl 1 is wide open.
  • the side frame portion 20 is in a basic posture state in which it does not tilt forward, for example, the state shown in FIG. In this state, the person being assisted P is seated on the seat portion 1a of the seated toilet bowl 1 with the assistance of the caregiver.
  • the front arm portion 30 After the person being assisted P is seated on the seat portion 1a, the front arm portion 30 is set to the used position. At the use position, the cushion member 80 attached to the main body 32, more specifically the main body 32, of the front arm 30, is positioned immediately before the front surface of the upper body of the person being assisted P (see FIG. 3). .. As a result, when the upper body of the person being assisted P tries to fall forward, the front arm portion 30 supports the person P to prevent the person being assisted P from falling forward.
  • the upper body of the person being assisted P seated on the seat 1a When the upper body of the person being assisted P seated on the seat 1a tries to fall backward, the upper body is supported by the rear frame portion 40 to prevent the upper body from falling backward. Further, the pair of left and right side frame portions 20 prevents the person being assisted P seated on the seat portion 1a from falling sideways.
  • the caregiver operates the operating member 68 to release the locking action of the swing angle changing mechanism 60, and the side frame portion 20, and the front arm portion 30 and the rear frame portion 40 integrated therein. Can be tilted forward to a desired forward tilt angle. By releasing the operation of the operating member 68 after reaching the desired forward tilt angle, the swing of the side frame portion 20 is regulated at that position.
  • FIG. 3 shows the state when the side frame portion 20 is tilted forward by about 20 degrees from the basic posture state.
  • the person being assisted P will be supported by the front arm portion 30 in a state of leaning forward. Since the person being assisted P leans forward, it becomes a particularly preferable posture for promoting defecation, and a large space is formed behind the upper body of the person being assisted P, the caregiver is able to perform the hips after defecation. It is possible to easily clean up after wiping.
  • the caregiver or the person being assisted P whose arm is free should smoothly set the arm portion 30 in the escape position. Can be done.
  • the arm portion 30 can be smoothly swung to the shunting position at the will of the person being assisted P, and the person being assisted feels restrained. It is also preferable for preventing or suppressing giving to P.
  • the person being assisted P When the side frame portion 20 is tilted forward as shown in FIG. 3, the person being assisted P voluntarily deposits the weight on the rear frame portion 40, so that the swing angle changing mechanism 60 is locked. It is automatically released by the action of the inclined surface 64a on the locking convex portion 64, and can be moved in the direction of reducing the forward tilt angle of the side frame portion 20, and returns to the basic posture state as shown in FIG. You can also let them.
  • the fact that the forward tilt angle of the side frame portion 20 can be easily reduced based on the intention of the person being assisted P prevents or suppresses giving the person being assisted P a feeling of being restrained. It is also preferable above. Further, even when it is difficult for the person being assisted P to maintain the forward leaning posture due to excessive tilting forward, it is possible to quickly return to the preferable forward tilting angle desired by the person being assisted P.
  • the side frame portion 20 is in the basic posture state in which it does not tilt forward, that is, the state shown in FIG. 2, and the arm portion 30 is in the shunting position, for example, the state shown in FIG. After this, the person being assisted P leaves the seated toilet bowl 1 with the assistance of the caregiver.
  • the front arm portion 30 in the shunting position is in a locked state in which its rotation is restricted.
  • the front arm portion 30 in the shunting position carelessly becomes the used position and hinders the movement of the person being assisted to sit down. The situation is definitely prevented. Further, the person being assisted or the assisted vehicle can use the locked front arm portion 30 as a handrail.
  • FIG. 15 shows a second embodiment of the present invention, and the same components as those of the embodiment are designated by the same reference numerals. This also applies to the following third embodiment and the following.
  • This embodiment shows a modified example of the swing angle changing mechanism. That is, in the swing angle changing mechanism 60B of the present embodiment corresponding to the swing angle changing mechanism 60 of the embodiment, the engaging member 72 corresponding to the engaging member 65 of the embodiment is cylindrical. There is. The engaging member 72 is slidably fitted to the lower frame portion 22 via a tubular guide member 73.
  • the locking member 74 corresponding to the locking member 61 in the above embodiment has a plate material in an arc shape.
  • the locking member 74 is formed with locking holes 74a corresponding to the locking recesses 63 of the embodiment at equal angular intervals around the connecting portion 52.
  • the lower stopper portion 54B corresponding to the pin-shaped lower stopper portion 54 in the above embodiment has a plate shape.
  • the lower surface is an inclined surface 72b.
  • the inclined surface 72b corresponds to the inclined surface 64a in the locking convex portion 64 in the embodiment. That is, in a state where the engaging protrusion 72a is fitted (locked) to the locking hole 74a, the side frame portion 20 (front arm portion 30) is strongly restricted from swinging in the forward downward direction. ..
  • the inclined surface 72b is formed along the inner peripheral edge portion of the locking hole 74a. It is possible to get out of 74a. That is, swinging in the forward rising direction is allowed.
  • FIG. 16 shows a third embodiment of the present invention, which is a modified example of the second embodiment.
  • the engaging protrusion 74a formed on the engaging member 72B does not have an inclined surface 72b.
  • the side frame portion 20 is firmly locked in both the front-down direction and the front-up direction. In both directions, it is necessary to operate the operation member 68 to release the lock.
  • FIG. 17 shows a fourth embodiment of the present invention.
  • the base member 10D corresponding to the base member 10 is fixed to the wall surface located behind the seated toilet bowl 1. That is, the base member 10D includes a pair of left and right mounting plate portions 121 that serve as mounting portions on the wall surface, a pair of left and right rod-shaped members 122 extending forward from each mounting plate portion 121, and a pair of left and right rod-shaped member tips. It has a connecting rod-shaped member 123 that connects the two members. Further, in the present embodiment, each cushion member 80 is a fixed type that does not swing.
  • FIG. 18 shows a fifth embodiment of the present invention.
  • the base member 10E is substantially formed by a mounting plate portion 131 fixed to a wall surface located behind the seated toilet bowl 1.
  • the bearing member including the side arm portion 20 and the front arm portion 30 is arranged only on the left side of the person being assisted.
  • a support member having a symmetrical shape with that of the structure shown in FIG. 18 may be provided only on the right side, or a pair of left and right support members may be provided independently.
  • the front arm portion 30 is in a posture of being rotated downward at the shunting position shown by the alternate long and short dash line in the figure.
  • the use position is the lock position where the lock is performed
  • the escape position is the unlock position.
  • the front arm portion 30 in the shunting position may be in a posture of being rotated upward as in the first embodiment. In this case, in order to use the front arm portion 30 in the shunting position as a handrail, the shunting position may be set as the lock position.
  • FIG. 19 shows a sixth embodiment of the present invention, which is also a modified example of the embodiment shown in FIG.
  • the rotation portion of the front arm portion 30 and the lock mechanism 90 are provided at a portion of the side frame portion 20 extending in the vertical direction.
  • the front arm portion 30 is rotated about an axis extending in the vertical direction, and at the shunting position indicated by the alternate long and short dash line in the figure, the front arm portion 30 is rotated toward the front. That is, the main body 32 of the front arm 30 extends substantially horizontally in both the used position and the shunting position.
  • the use position is the lock position, while the escape position is the unlock position.
  • the shunting position may also be the locked position.
  • the front arm portion 30 may be provided only for the side frame portion 20 of any one of the pair of left and right side frame portions 20.
  • At least one of the cushion members 80 provided on the main body 32 or the rear frame 40 may be a fixed type that does not swing, or may have a shape that covers the entire circumference of the main body 32 and the rear arm 40.
  • the swing angle changing mechanism 60 can be provided only on one side frame portion 20 of the pair of left and right side frame portions 20, and more. It can also be provided on both side frame portions 20 in order to ensure a reliable locking action.
  • the side frame portions 20 may be provided on either the left or right side without providing a pair on the left and right sides.
  • the number of swing angles that the bearing member can take between the swing stroke ends is set in a stepwise manner, but it may be changed to a continuously variable type.
  • the rotation lock of the front arm portion 30 by the lock mechanism 90 may be performed at both the shunting position and the used position, or may be locked only at the used position.
  • the first locking portion may be in the form of a locking step portion instead of the groove form of the locking groove 33a.
  • FIG. 11 showing the lock position, of the inner wall surfaces on both sides in the circumferential direction of the locking groove 33a, only the inner wall surface on the second stopper portion 33c side may be formed as a locking step portion. it can.
  • the side frame portion 20 and the rear frame portion 40 can adopt an appropriate structure, and can be configured to form, for example, a surface (formed in a surface shape).
  • a surface formed in a surface shape
  • it can be configured only by a plate material, or it can be configured by a combination of a plate material and a pipe material.
  • a plate material to be used a metal plate or a plastic plate, particularly a fiber reinforced plastic plate can be used, and a perforated plate can also be used.
  • the second member serving as the rotating member corresponding to the front arm portion 30 in the embodiment may be located in the vicinity of the assisted person seated on the seat portion and have a function of assisting the assisted person.
  • an appropriate one such as the elbow rest portion described in Patent Document 1 can be selected.
  • an appropriate one can be selected as long as the first member is rotatably connected.
  • the locking groove 33a and the corresponding locking portion 110a can also be located in the immediate vicinity of the first tubular portion 101 and outside its end face.
  • the locking portion 110a can be positioned only on one end face side of the first tubular portion 101, or can be positioned on both end face sides, respectively.
  • the device having a seat to which the present invention is applied is not limited to a seated toilet bowl, and includes, for example, a fixed chair for a break, a fixed chair in an ornamental position, and the like as appropriate.
  • the swing connection mechanism 50 is not limited to the embodiment and may have an appropriate structure.
  • the swing angle changing mechanism 60 and the lock mechanism 90 are not limited to the embodiment and have an appropriate structure. Can be adopted.
  • an object of the present invention is not limited to what is specified, but also implicitly includes providing what is expressed as substantially preferable or advantageous.
  • the embodiment of the present invention is suitable as an assistance device having a rotary connection structure with a lock function.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Toilet Supplies (AREA)
  • Invalid Beds And Related Equipment (AREA)
PCT/JP2020/021913 2019-06-12 2020-06-03 介助装置における回動連結構造 Ceased WO2020250767A1 (ja)

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JP7137665B1 (ja) 2021-06-15 2022-09-14 ナカ工業株式会社 介助装置
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JP2020199141A (ja) 2020-12-17
CN113853144A (zh) 2021-12-28

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