JP2017070543A - Folding chair for nursing care - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding chair for nursing care (shower) whose seating face is divided into left and right, which is foldable and can be made self-supporting in a folded state.SOLUTION: The folding chair for nursing care includes: front leg frames 2a, 2b having front leg parts 21a, 21b and a backrest support part 22 that extends upward from the front leg parts; rear leg parts 3a, 3b that are rotatably journaled by the front leg parts; a backrest part 4 installed on the backrest support part; and a seat part 5 which has in the upper part a left seating face 5a and a right seating face 5b that is separated from the left seating face, which has a groove part formed therein that is extended in the front and the rear direction between the left seating face and the right seating face, with the reverse face of the groove part bulged outward, and which is rotatably journaled by the rear leg part in the first pivot point. When the chair is folded by making the front leg part and the rear leg part closed, the chair can be self-supporting by the front leg part and the rear leg part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a folding chair for nursing care, and in particular, the seat surface is divided into right and left parts for cleaning a user's local part and the like, and when the front leg part and the rear leg part are closed, the seat divided into right and left parts is provided. The present invention relates to a folding chair for nursing that can be folded compactly so as to be stored under a backrest and can be made independent by a front leg and a rear leg.

  Conventionally, when an elderly person or a physically handicapped person wash a body in a bathroom or take a shower, a shower chair for nursing care having a higher seating surface than a general bath chair has been used. Particularly for users who are not easy to sit up, for example, Japanese Utility Model Laid-Open No. 3-94225 (Patent Document 1), Japanese Utility Model Laid-Open No. 6-77682 (Patent Document 2) and Japanese Patent Application Laid-Open No. 2007-61509. As described in the publication (Patent Document 3), a shower chair is used in which the seat surface is divided into left and right, and a U-shaped groove is provided at the center of the seat surface. . These shower chairs allow caregivers to wash their local areas by inserting their hands or shower heads between the divided seats, so that the user does not have to sit up and is burdened. It is reduced.

  On the other hand, when the shower chair is not used, it is convenient that the shower chair can be folded and stored. For this reason, for example, as described in Japanese Patent Application Laid-Open No. 2002-191523 (Patent Document 4), the opening / closing operation of the leg portion and the folding operation of the seat surface are not interlocked and can be moved independently. Thus, a shower chair that can be folded compactly or a leg as described in, for example, Japanese Patent Application Laid-Open No. 2007-37608 (Patent Document 5) and Japanese Patent Application Laid-Open No. 2008-229310 (Patent Document 6). A shower chair has been developed that can be folded easily and compactly by a single operation by moving the leg or the seating surface by linking the opening / closing operation of the seat and the folding operation of the seating surface.

  However, as described in Patent Documents 1 to 3, in the case of a shower chair in which the seat surface is divided into right and left and a U-shaped groove is provided in the center of the seat surface, the strength of the chair is increased. To ensure that the seating surface and backrest, left and right seating surfaces are integrated, or the frame is curved so that the seating surfaces and U-shaped grooves that are divided into left and right can be individually supported, or There is a fact that the frame structure must be complicated by dividing it.

  For this reason, in the shower chair as described in Patent Documents 1 to 3, the shower chair that can be folded like the shower chair described in Patent Documents 4 to 6 and can be self-supported in the folded state is provided. There was a basic problem that was not developed yet.

  Moreover, when trying to make the shower chair as described in Patent Documents 1 to 3 into a compactly foldable shower chair as described in Patent Documents 4 to 6, the seat surface and the backrest are separated from each other. The frame structure must be made more complicated by using divided parts or by providing a large number of link mechanisms, resulting in a problem that the strength of the chair is reduced.

  Furthermore, in the case of a shower chair as described in Patent Documents 1 to 3, since the U-shaped groove portion bulges greatly toward the back surface of the seat surface, the seat surface (or seat portion) becomes bulky in the thickness direction. There is a feature that. For this reason, in order to fold the shower chair as described in Patent Documents 1 to 3 more compactly, when the leg is closed and the chair is folded, the seat surface, the backrest and the leg Are aligned so that they are aligned in substantially the same plane.

  As a typical folding chair in which the seat surface, the backrest, and the leg are aligned so as to be aligned in substantially the same plane when the legs are closed, for example, Japanese Patent Laid-Open No. 9-69549 (Patent Document 7). General purpose pipe chairs are well known, as described in.

  However, in the case of a general-purpose pipe chair such as that described in Patent Document 7, when the leg portion is closed, the seat surface pivot point is set to the depth of the seat surface so that the seat surface can enter under the backrest. Therefore, when a load is applied to the rear side of the pivot point of the seat surface, the seat surface unexpectedly jumps and pivots, which is extremely dangerous. In particular, care shower chairs are scheduled to be used by elderly people, physically handicapped persons, and the like, and therefore, the elimination of the danger described above is an indispensable condition and has a restriction that it is not allowed.

  In addition, in the case of a shower chair for the purpose of nursing care or the like, it is preferable that the seating surface has a depth and a width that are not less than a predetermined length in order to ensure the safety and comfort of the user. The position of the backrest is also preferably attached within a predetermined height range with respect to the seating surface.

  For this reason, in the case of the shower chair for the care which has the fixed magnitude | size which ensured the user's safety and comfortable seating comfort, as described in patent documents 4-6, for example, a leg part is closed and a chair When the seat is folded, there is a problem in that the seating surface cannot be buried under the backrest, and the seating surface, the backrest and the leg portion cannot be aligned in substantially the same plane.

Japanese Utility Model Publication No. 3-94225 Japanese Utility Model Publication No. 6-77682 JP 2007-61509 A JP 2002-191523 A JP 2007-37608 A JP 2008-229310 A JP 9-69549 A

  Therefore, in the present invention, in order to clean the user's local area, the seat surface is divided into left and right, or the seat surface is divided into left and right, and a U-shaped groove is provided at the center of the seat surface. It is an object of the present invention to provide a folding chair for nursing care that is foldable and can be self-supported in a folded state.

  Further, in the present invention, in order to clean the user's local area, the seat surface is divided into left and right, or the seat surface is divided into left and right, and a U-shaped groove is provided in the center of the seat surface. The nursing (shower) chair can be folded in a single motion by moving the leg or seating surface, and in the folded state, the seating surface, the backrest portion, and the leg portion are substantially in the same plane. It is an object of the present invention to provide a folding chair for nursing care that is excellent in operability and compactness.

  In order to achieve the above-mentioned object, the present inventors have made extensive studies on the frame structure including the leg part, the shape of the seating surface and the backrest part, the connection structure of each part, etc., for the nursing (shower) chair. As a result, it has been found that it is most effective to optimize the axial support position of the seat portion having the seat surface by the leg portion, and the present invention has been completed.

  That is, the folding chair for care of the present invention includes a front leg frame including a front leg part, a back support part extending upward from the front leg part, a rear leg part pivotally supported by the front leg part, and a backrest. A backrest portion attached to the support portion; a left seat surface at the top; a right seat surface spaced from the left seat surface; and extending in the front-rear direction between the left seat surface and the right seat surface A seat portion in which a groove portion is formed and a rear surface of the groove portion bulges outward, and is pivotally supported on the rear leg portion at a first pivot point. In addition, when the chair is folded with the front legs and the rear legs closed, the front legs and the rear legs can stand on their own.

  Therefore, in the care (shower) chair of the present invention, the seat surface is divided into right and left parts and a U-shaped groove is provided in the center of the seat surface in order to wash the user's local part and the like. Nevertheless, unlike the nursing (shower) chairs described in Patent Documents 1 to 3, the chair can be folded and can be self-supported in the folded state.

  That is, the folding chair for care according to the present invention is capable of adjusting the length of the front leg portion and the rear leg portion, and the seat portion is aligned in a substantially same vertical plane as the backrest portion, the front leg frame, and the rear leg portion. When the chair is folded with the front and rear legs closed, the chair's center of gravity is inside the grounding point of the front leg and the grounding point of the rear leg (with the grounding point of the front leg). It is arranged between the grounding points of the rear legs) and can be made to stand extremely stably.

  In the present specification and the like, `` front '', `` downward '', `` left '', and `` right '' refer to the direction seen from the user seated forward on the folding chair for care of the present invention, forward, Down, left and right. Therefore, for example, the side on which the user's left arm is present is the left or left side of the nursing folding chair, and the side on which the user's right arm is present is the right or right side of the nursing folding chair. Also, “when the front and rear legs are open” means that the chair is widened and the user can sit down, and “when the front and rear legs are closed”. Means that the chair is folded. Further, “aligned in substantially the same vertical plane” means an aspect in which the bulky parts of each part are arranged so as to cross substantially the same plane, and all of the parts are substantially the same. It does not mean that they are arranged across a plane.

  In the folding chair for care of this invention, it is preferable that the 1st axial fulcrum of a seat part is arrange | positioned ahead of the rearmost end part of a seat part, and behind the intermediate point of the depth of a seat part.

  When the first shaft fulcrum of the seat is arranged in front of the rearmost end of the seat, the front leg and the rear leg are closed while ensuring the required height of the backrest relative to the seat surface. In a state where the seat is folded, the seat portion can be stored in a compact manner so as to be buried under the backrest portion. In addition, the first pivot point of the seat is behind the midpoint of the depth of the seat, more preferably behind the position of the coccyx when the user having an average body shape is seated. If it arrange | positions, even if a user seats back from the intermediate point of the depth of a seat part, it will prevent that a seat surface jumps up unexpectedly and rotates.

  In the folding chair for care according to the present invention, the seat portion is pivotally supported at the second leg fulcrum disposed in front of the first pivot point of the seat portion so that one end of the seat portion can be pivoted on the front leg portion. Is pivotally supported by the other end of the link, and the leg is opened when the front leg and the rear leg transition from the open leg state to the closed leg state or from the closed leg state of the front leg and the rear leg part. When shifting to the state, it is preferable that the rotation locus of the first pivot point related to the front leg portion intersects with the rotation locus of the second axis point related to the front leg portion.

  The seat is pivotally supported by the rear leg at the first pivot point, and is pivotally supported by the front leg at the second pivot point disposed in front of the first pivot point. If the seat is attached to the front leg via the link, the seat will be inadvertently rotated by the user's load, regardless of where the user is seated due to the two-point pivot support of the seat. Can be reliably prevented.

  Furthermore, in the present invention, when the front and rear legs are opened and the nursing folding chair is expanded, the front and rear legs are moved when the front and rear legs are closed and shifted to the folded state or vice versa. The pivot locus of the first pivot point and the second pivot point of the front leg intersect with each other, so that the relative positional relationship between the first pivot point and the second pivot point of the seat portion Can be freely changed. For example, in a state where the front and rear legs are opened and the chair is widened, the chair is folded by closing the front and rear legs and the second pivot that is disposed in front of the first pivot in a substantially horizontal plane. In this state, it is moved so as to be arranged above the first pivot point in a substantially vertical plane, or moved so as to be arranged behind the first pivot point in a substantially horizontal plane. it can.

  For this reason, in the present invention, the first pivot point and the second pivot point are aligned in a substantially horizontal plane by interlocking the pivoting movement of the seat and the opening / closing movement of the leg, and in the open leg state. In the closed leg state, the first pivot point and the second pivot point are arranged so as to be aligned in a substantially vertical plane, so that the seat portion is 90 degrees or more with respect to the front leg portion. As a result of being able to be rotated so that the backrest and the leg frame or leg are aligned in substantially the same vertical plane with a rotation angle, it can be folded into a very compact form. Moreover, since the folding chair for care of this invention can fold or expand a chair by one operation | movement by moving a leg part or a seat surface, it is excellent also in operativity.

  In the folding chair for care of the present invention, the distance from the rotation axis passing through the first pivot point to the front end of the seat portion in the vertical longitudinal section is the rotation through the first pivot point in the same vertical section. It is preferable that the distance is shorter than the distance from the shaft to the lower end of the backrest. Also, when the front and rear legs are closed and the chair is stood and folded, the width of the seat depends on the inner method between the back support parts and / or the left and right attached to the back support parts in the same horizontal cross section. It is preferably shorter than the inner method between the armrests.

  The shape of the seat part and the shape of the backrest part are determined from the rotational axis passing through the first pivot point so that the distance from the rotational axis passing through the first pivot point to the front end portion of the seat part is within a certain vertical longitudinal section. While making the distance shorter than the distance to the lower end of the backrest, to secure the necessary area required for the seat and the required area for the backrest in order to improve the user's safety and comfortable sitting comfort In a state in which the front and rear legs are closed and the chair is folded, the seat can be stored in a compact manner so as to be buried under the backrest. Further, when the chair is folded, the width of the seat portion is set to be larger than the inner method between the back support portions and / or the left and right armrests attached to the back support portions in the same horizontal cross section. Even in the case of shortening, the same effect as described above can be obtained.

  As another aspect, the folding chair for nursing care of the present invention includes a pair of left and right front leg frames and a right front leg frame including a front leg portion and a back support portion extending upward from the front leg portion, and a left front leg portion and a right front leg portion. A pair of left and right left and right rear legs pivotally supported on each of the two, a backrest attached to the back support, and a transverse frame connecting the left and right front legs. A left support member having a left support surface extending substantially parallel to the cross frame above the cross frame and having one end attached to the left front leg and the other end to the cross frame. An attached left support member; a right support member extending substantially parallel to the transverse frame above the transverse frame and having a right support surface spaced from the left support surface; and End is right front leg A right support member attached to the transverse frame at the other end, a left seat surface at the top, and pivotally supported on the left rear leg at the first left pivot point. And when the left and right front legs and left and right rear legs are open, the left seat is supported by the left support surface, and the upper portion has a right seat surface separated from the left seat surface. And a right supported by the right support surface when the left and right front legs and the left and right rear legs are open and pivotally supported by the right rear leg at the first right axis fulcrum. The seat has a feature that when the chair is folded with the left and right front legs and the left and right rear legs closed, the seat can be made independent by the left and right front legs and the left and right rear legs.

  In other words, in the folding chair for nursing care of the present invention of another aspect, unlike the nursing folding chair of the present invention, a groove portion extending in the front-rear direction is not necessarily formed between the seat surfaces divided / separated into the left and right. Therefore, the seat may be completely divided / separated into left and right seats. Therefore, the folding chair for care of the present invention has left and right support members for supporting the left and right seats from below. The folding chair for care of the present invention has a transverse frame that connects the left and right front legs, and the left and right support members are fixed by being attached to the left front leg or the right front leg and the transverse frame, respectively. Has been.

  For this reason, the care (shower) chair of the present invention is foldable in a folded state even though the seat surface is divided / separated into left and right to clean the user's local area and the like. Then you can make it independent. In addition, since the seat portion may be completely divided / separated into the left and right seat portions, in this case, the caregiver or the like is obstructed by a connecting seat portion formed between seat surfaces described later. In addition, the user's local area and the like can be freely washed from directly below using the space below the seat.

  Further, the folding chair for nursing of the present invention is capable of adjusting the lengths of the left and right front legs and the left and right rear legs, and the left and right seats with the backrest, the left and right front leg frames and the rear legs. The chairs can be folded so that they are aligned in substantially the same vertical plane, so in the state where the left and right front legs and left and right rear legs are closed and the chair is folded, the center of gravity of the chair is the grounding point of the left and right front legs. It is arranged inside the ground contact area that connects the ground contact points of the left and right rear legs, and can be made extremely stable and independent.

  In the folding chair for care of the present invention, the left support member and the right support member may be a left front leg part or a thin rectangular block or flat plate attached to the right front leg part and the transverse frame. Has a left support surface extending substantially parallel to the transverse frame above the transverse frame, and having one end attached to the left front leg and the other end attached to the transverse frame. More preferably, the right support member has a right support surface extending substantially parallel to the transverse frame above the transverse frame, and the one end is similar to the left support member. More preferably, it is in the form of a bar attached to the right front leg and the other end attached to the transverse frame. Further, the other end opposite to one end of the left support member is preferably attached to the transverse frame via a left auxiliary frame extending upward from the transverse frame, and the right support member The other end opposite to the other end is preferably attached to the transverse frame via a right auxiliary frame extending upward from the transverse frame.

  The left and right support members are rod-shaped, and the other ends of the left support member and the right support member opposite to the side attached to the transverse frame are attached to the transverse frame via the left and right auxiliary frames. In this case, the seat surface divided into the left and right can be firmly supported independently from the bottom, and the caregiver can easily access the user's local area from the front of the chair. In particular, when a U-shaped groove or the like is provided between the left and right seating surfaces, the frame traversing the front front of the groove can be omitted, so that the accessibility from the front of the chair is further improved.

  In the folding chair for care of the present invention, the left seat portion and the right seat portion are connected by the connecting seat portion so as to form a groove portion extending in the front-rear direction between the left seat surface and the right seat surface, and The groove portion may have a bottom surface that is inclined so as to be lowered rearward when the left and right front leg portions and the left and right rear leg portions are open.

  When the left seat portion and the right seat portion are connected by a connecting seat portion having a U-shaped groove or the like, the strength of the seat portion and the folding chair for care is improved. In addition, when the front, back, left, and right legs are opened and the chair is widened, the bottom of the groove is inclined so that it falls downward, so there is no waste or excrement generated by washing the user's local area. , It is possible to prevent unintended forward flow. In particular, when cleaning a user's local area, etc., seated on a folding chair for care, the caregiver often cares for the user from the back or side of the user. If it is installed, it becomes easy to treat drainage and excrement, and it will not flow out forward and soil the feet of users and the like.

  In the folding chair for care according to the present invention, it is preferable that the connecting seat portion includes an engaging means that engages with the transverse frame when the left and right front legs and the left and right rear legs are open.

  The connecting seat is disengaged from the transverse frame when the left and right and left and right legs are closed and the chair is folded, but when the left and right and left and right legs are opened and the chair is widened, it is supported from below by the transverse frame. ing. For this reason, if the connection seat part is provided with the engaging means which engages with a crossing frame, the support of the right and left seat part couple | bonded with the connection seat part and the connection seat part by a crossing frame will become more reliable. Further, in the present invention, the rotation operation of the left and right seat portions integrated with the connection seat portion is interlocked with the opening and closing operation of the left and right front and rear leg portions, so that the connection seat portion is engaged with the transverse frame by the engaging means. In the state where the chair is opened, the folding chair for care is prevented from being folded carelessly.

  In the folding chair for care of this invention, it is preferable that the connection seat part is provided with the cue part arrange | positioned ahead of a crossing frame, when the right-and-left front leg part and the right-and-left rear leg part are open.

  Since the back surface of the connecting seat bulges outward to form a U-shaped groove, when the left and right and left and right legs are opened and the chair is widened, There is a possibility that hands of a caregiver, a user, etc. may be pinched between the crossing frame that supports the protruding portion from below. For this reason, if the clue part is formed ahead of the crossing frame on the back surface of the connecting seat part, the caregiver's hand is prevented from being guided and pinched by the clue part. Also, when folding the chair with the left and right and left and right legs closed, it is convenient because the hand of a caregiver or the like is guided to a position that is safe and easy to fold. The clue part may be a recess formed on the back surface of the connection seat and / or a handle protruding from the projection or the connection seat.

  In the folding chair for care of the present invention, the first left axis fulcrum is disposed in front of the rearmost end of the left seat and rearward of the midpoint of the depth of the left seat, and the first The right axis fulcrum is preferably disposed in front of the rearmost end portion of the right seat portion and rearward of the midpoint of the depth of the right seat portion.

  When the first left and right shaft fulcrums are respectively arranged in front of the rearmost ends of the left and right seats, the left and right front legs and the left and right legs are secured while ensuring the required height of the backrest relative to the seat surface. In a state in which the rear leg portion is closed and the chair is folded, the left and right seat portions can be stored compactly so as to be embedded under the backrest portion. Further, the first left and right shaft fulcrums are respectively located behind the midpoint of the depths of the left and right seats, and more preferably, the abutment of the tailbone when a user having an average figure takes a sitting posture. If it is arranged behind the position, even if the user sits behind the midpoint between the depths of the left and right seats, the seat surface is prevented from unexpectedly jumping up and turning.

  In the folding chair for care of the present invention, the left seat portion is pivoted to the left front leg portion at the second left shaft fulcrum disposed forward of the first left shaft fulcrum of the left seat portion. The second seat is pivotally supported by the other end of the left link that is pivotally supported, and the right seat portion is disposed in front of the first right shaft fulcrum of the right seat portion. At the right fulcrum, one end is pivotally supported by the other end of the right link pivotally supported by the right front leg, and the left and right front legs and left and right rear legs When shifting from the open leg state to the closed leg state or when shifting from the closed leg state of the left and right front legs and the left and right rear legs to the open leg state, the rotation trajectory of the first left pivot point with respect to the left front leg is The rotation trajectory of the first right axis fulcrum with respect to the right front leg portion intersects with the rotation trajectory of the second left axis fulcrum with respect to the portion. It is preferred that intersects with the right shaft fulcrum rotation locus.

  The left and right seats are respectively pivotally supported by the left and right rear legs at the first left and right pivot points, and are disposed in front of the first left and right pivot points. If the left and right front legs are attached to the left and right front legs via left and right links pivotally supported by the left and right front legs, the user can Regardless of the position of the surface, careless rotation of the seat surface due to the load of the user can be reliably prevented.

  Furthermore, in the present invention, when the left and right and left and right legs are opened and the folding chair for nursing care is expanded, when the left and right and left and right legs are closed and shifted to the folded state or vice versa, Since the rotation trajectory of the first left or right pivot point with respect to the left or right front leg portion and the rotation trajectory of the second left or right pivot point with respect to the left or right front leg portion intersect each other, The relative positional relationship between the first left and right shaft fulcrum and the second left and right shaft fulcrum can be freely changed. For example, in a state where the left and right and left and right leg portions are opened and the chair is widened, the second left and right axial fulcrums arranged in front of the first left and right axial fulcrums in a substantially horizontal plane are respectively In a state where the legs are closed and the chair is folded, the chair moves so as to be positioned above the first left and right pivots in a substantially vertical plane, or from the first left and right pivots in a substantially horizontal plane. Can also be moved rearwardly.

  Therefore, in the present invention, the rotation operation of the left and right seat portions and the opening and closing operation of the left and right leg portions are interlocked, and in the open leg state, the first left and right shaft fulcrum and the second left and right shaft fulcrum Are arranged so that they are aligned in a substantially horizontal plane, and in the closed leg state, the first left and right shaft fulcrums and the second left and right shaft fulcrums are arranged in a substantially vertical plane, respectively. Thus, the left and right seats have a rotation angle of 90 degrees or more with respect to the left and right front legs, and are aligned in the same vertical plane as the backrest, the left and right front leg frames, and the rear legs. As a result, it can be folded into a very compact form. Moreover, the folding chair for care of this invention is excellent also in operativity, since a chair can be folded or expanded by one operation | movement by moving the leg part on either side, right and left, or a right and left seat surface.

  In the folding chair for care of the present invention, from the rotation axis connecting the first left axis fulcrum and the first right axis fulcrum in the vertical longitudinal section to the front end of the left seat or the front end of the right seat The distance is preferably shorter than the distance from the rotation axis connecting the first left axis fulcrum and the first right axis fulcrum to the lower end of the backrest in the same longitudinal section. Also, when the left and right front and rear legs are closed and the chair is stood and folded, the width between the left side of the left seat and the right side of the right seat is between the back support in the same horizontal cross section. The inner method is preferably shorter than the inner method and / or the inner method between the left and right armrests attached to the back support portion.

  The front end of the left and right seats from the rotation axis passing through the first left and right pivots in a vertical cross section in the vertical direction, the shape of the entire seat and the shape of the backrest including the left and right seats and the connecting seat In order to improve the user's safety and comfortable seating comfort, the left and right seating surfaces can be adjusted to be shorter than the distance from the rotation axis passing through the first left and right pivots to the lower end of the backrest. While ensuring the required area and height required for the backrest, while closing the left and right legs and folding the chair, the left and right seats should be hidden under the backrest. It can be stored compactly. In addition, when the chair is folded, the width of the entire seat including the left and right seats and the connecting seat is fixed to the inner method between the back supports in the same horizontal cross section and / or attached to the back support. The same effect as described above can be obtained when the length is shorter than the inner method between the left and right armrests.

  In the folding chair for nursing of the present invention, the left armrest is rotatably attached to the back support portion of the left front leg frame, and the right armrest is rotatably attached to the back support portion of the right front leg frame. The left armrest includes a left holding portion that locks the left seat by contacting the side surface of the left seat when the left and right front legs and the left and right rear legs are closed and the left armrest is flipped up. And / or the right armrest locks the right seat by contacting the side of the right seat when the left and right front legs and left and right rear legs are closed and the right armrest is flipped up. It is preferable to have a holding part.

  When left and right armrests are provided on the back support parts of the left and right front leg frames, the user uses the armrests to assist the user's sitting posture, standing posture, and movement between the two postures. And can be stabilized. In addition, when the left and right armrests are attached to the backrest supporter so that they can be rotated (folded), the armrests can be flipped up to improve accessibility when the user moves to or from the chair. In addition, when the left and right and left and right legs are closed and the chair is not used, the armrests should be flipped up and aligned in the same vertical plane as the left and right seats, backrest, left and right front leg frames, and rear legs. Therefore, the compact storability of the folding chair for care of the present invention is not hindered.

  Further, when the left or right armrest is provided with a left or right holding portion that is locked by interfering with the side surface of the left or right seat portion, the left and right and left and right leg portions are closed and the chair is folded. Therefore, it is possible to prevent the left and right leg portions from opening unexpectedly. In particular, since the holding portion is provided at a position (long distance) away from the first left and right pivots of the left and right seats, the left and right legs are reliably opened against a large rotational moment. Can be prevented. The left or right holding portion may be a concave portion and / or a convex portion formed on the side surface of the left or right armrest, respectively, and in particular, without providing the holding portion on the left and right armrests, The holding portion is a backrest support portion of the left and right front leg frames, and may be provided at a position that interferes with the side surface of the armrest.

  The care (shower) chair of the present invention is foldable in order to clean the user's local area and the like even though the seat surface is divided / separated into left and right, and is self-supporting in the folded state. be able to. Further, since the seat portion may be completely divided / separated into the left and right seat portions, in this case, the caregiver or the like is disturbed by a connecting seat portion (groove portion) formed between the seat surfaces. Without using the space below the seat, the user's local area and the like can be freely washed from directly below.

  Further, the folding chair for nursing of the present invention is capable of adjusting the lengths of the left and right front legs and the left and right rear legs, and the left and right seats with the backrest, the left and right front leg frames and the rear legs. The chairs can be folded so that they are aligned in substantially the same vertical plane, so in the state where the left and right front legs and left and right rear legs are closed and the chair is folded, the center of gravity of the chair is the grounding point of the left and right front legs. It is arranged inside the ground contact area that connects the ground contact points of the left and right rear legs, and can be made extremely stable and independent.

  The folding chair for care of the present invention interlocks the pivoting movement of the left and right seats with the opening and closing movements of the left and right leg parts, and in the open leg state, the first left and right pivot points and the second left and right pivots Are arranged so as to be aligned in a substantially horizontal plane, and in the closed leg state, the first left and right axial fulcrums and the second left and right axial fulcrums are respectively aligned in a substantially vertical plane. Because it is arranged, the left and right seats have a rotation angle of 90 degrees or more with respect to the left and right front legs, and are aligned in the same vertical plane as the backrest, left and right front leg frames, and rear legs. As a result, it can be folded into a very compact form. Moreover, the folding chair for care of this invention is excellent also in operativity, since a chair can be folded or expanded by one operation | movement by moving the leg part on either side, right and left, or a right and left seat surface.

It is a perspective view which shows one Embodiment seen from the folding chair for care of this invention. It is a perspective view which shows the aspect seen from the folding chair for nursing care of this invention shown by FIG. It is a perspective view which shows the aspect which decomposed | disassembled the seat part and backrest part of the folding chair for nursing care of this invention shown by FIG. It is a perspective view which shows the folded aspect of the folding chair for nursing care of this invention shown by FIG. It is a rear view which shows the folded aspect of the folding chair for nursing care of this invention shown by FIG. FIG. 3 is a side view showing a (use) mode in which a part of the folding chair for care shown in FIG. 1 is omitted and the chair is expanded. FIG. 3 is a side view showing a state in which a part of the folding chair for care shown in FIG. 1 is omitted and the chair is folded (stored).

  Hereinafter, the folding chair for care concerning one embodiment of the present invention is explained in detail, referring to drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

  The main structure of the folding chair 1 for care which concerns on one Embodiment of this invention is demonstrated using FIGS. The perspective view which looked at the folding chair 1 for care which concerns on this embodiment from the top is shown by FIG. FIG. 2 is a perspective view of the care folding chair 1 shown in FIG. 1 as viewed from below. FIG. 3 is an exploded perspective view of the backrest part 4 and the seat part 5 of the nursing folding chair 1 shown in FIG. FIG. 4 is a perspective view showing a folded state of the nursing folding chair 1 shown in FIG.

  As shown in FIGS. 1 to 4, the folding chair 1 according to the present embodiment includes a pair of left and right front leg frames 2 a and 2 b connected to one through a back support 22, and a left A pair of left and right left rear legs 3a and 3b pivotally supported on the front leg frame 2a and the right front leg frame 2b, respectively, and a left front leg frame 2a and a right front leg frame 2b. The left armrest 7a and the left armrest 7b that are pivotally attached to the left front leg frame 2a and the right front leg frame 2b, respectively, and the seat portion 5 pivotally supported on the backrest, the backrest portion 4 attached to the backrest support portion 22 When the chair 1 is folded with the left and right front leg frames 2a and 2b and the left and right rear leg portions 3a and 3b closed, the left and right front leg frames 2a and 2b and the left and right rear legs Parts 3a, can be self-supporting by 3b.

  The left front leg frame 2a and the right front leg frame 2b are integrally formed with left and right front leg portions 21a and 21b and a backrest support portion 22 that extends upward from the left and right front leg portions 21a and 21b and is connected to each other at the top. And has a substantially U-shape that is reversed in a front view, and a gentle S-shape that is gentle in a side view (see FIGS. 3 and 6). Further, the left front leg frame 2a and the right front leg frame 2b are made of a lightweight metal pipe such as aluminum, and a part of the front leg portions 21a and 21b is respectively shown by a solid line and a dotted line in FIG. It has a double pipe structure that is slidably fitted so that the length of the front legs 21a and 21b (the height of the chair 1) can be adjusted.

  As shown in FIG. 3, the left front leg frame 2 a and the right front leg frame 2 b include a cross frame 23 that connects the left front leg portion 21 a and the right front leg portion 21 b, and a cross frame 23 above the cross frame 23. A left support member 24a having a left support surface 240a extending substantially in parallel with one end and being attached to the left front leg 21a and the other end being attached to the transverse frame 23; A right support surface 240b extending substantially parallel to the cross frame 23 and spaced apart from the left support surface 240a and having one end attached to the right front leg portion 21b. And a right support member 24b attached to the transverse frame 23 at the other end.

  On the other hand, the left rear leg portion 3a and the right rear leg portion 3b are respectively provided with a left bracket 31a and a right bracket 31b extending laterally from the rear leg portions 3a and 3b, and the left front leg frame 2a or the right front leg frame 2b. Are pivotally attached to the left front leg frame 2a and the right front leg frame 2b via the left bracket 31a and the right bracket 31b so as to rotate eccentrically at a predetermined interval from the left bracket 31a. Further, the left rear leg portion 3a and the right rear leg portion 3b are made of a lightweight metal pipe such as aluminum, and a part of the rear leg portions 3a and 3b is shown by a solid line and a dotted line in FIG. Each of the rear legs 3a and 3b has a double pipe structure that is slidably fitted so that the length (the height of the chair 1) can be adjusted.

  The seat portion 5 is made of blow molded hollow plastic, and a left seat portion 5a having a left seat surface 51a made of foamed plastic attached to the upper portion and a right seat surface 51b made of foamed plastic being attached to the upper portion. A connecting seat that connects the left seat portion 5a and the right seat portion 5b so as to form a groove portion 61 extending in the front-rear direction between the right seat portion 5b and the left seat surface 51a and the right seat surface 51b. The unit 6 is integrally included. Further, the left seat surface 51a and the right seat surface 51b are separated from each other, and a kerf-shaped uneven pattern 510 having an anti-slip function and a drainage function is formed on the surfaces of the left and right seat surfaces 51a and 51b. Has been.

  And the seat part 5 is the left rear leg part 3a in the 1st left axis fulcrum 53a provided in the side surface of the left seat surface 51a, and the 1st right axis fulcrum 53b provided in the side surface of the right seat surface 51b. And it is pivotally supported by the right rear leg part 3b so that rotation is possible.

  As can be understood with reference to FIG. 3, a plurality of female holes 52 are formed in the upper surfaces of the left seat portion 5a and the right seat portion 5b, and on the other side of the left seat surface 51a and the right seat surface 51b. Are formed with protrusions 511 that fit into the female holes 52 of the left and right seat portions 5a and 5b. For this reason, since the left seat surface 51a and the right seat surface 51b are detachably mounted on the upper surfaces of the left seat portion 5a and the right seat portion 5b, the left and right seat surfaces 51a, 51b are connected to the left and right seat portions 5a, 5b. It can be easily removed and cleaned or replaced. Moreover, since the left seat surface 51a and the right seat surface 51b are made of a foam, it is excellent in heat insulation and cushioning properties that make it difficult for the user to feel the temperature of the chair 1, and is light and easy to handle. is there.

  The backrest part 4 is composed of a backrest body 41 made of blow-molded hollow plastic, and a foamed plastic pad 42 mounted on the front surface of the backrest body 41, using screws 43 and mounting brackets 44. The folding chair 1 for nursing care is attached to the back support 22. Further, on the surface of the pad 42, a kerf-shaped uneven pattern 420 having both an anti-slip function and a drainage function is formed.

  A plurality of female holes 45 are formed on the front surface of the backrest body 41, while a protrusion 421 that fits with the female holes 45 of the backrest body 41 is formed on the back side of the pad 42. For this reason, in this embodiment, since the pad 42 is detachably attached to the front surface of the backrest main body 41, the pad 42 can be easily removed from the backrest main body 41 for cleaning or replacement. Moreover, since the pad 42 is made of a foam, the pad 42 is excellent in heat insulation and cushioning properties that do not make the user feel the temperature of the chair 1, and is easy to handle because it is lightweight.

  In the folding chair 1 for care of this embodiment, the groove part 61 extended in the front-back direction does not necessarily need to be formed between the seat surfaces 51a and 51b divided / separated into right and left, so that the seat part 5 is The seats 5a and 5b may be completely divided / separated. Therefore, the folding chair 1 for nursing of this embodiment has left and right support members 24a and 24b for supporting the left and right seat portions 5a and 5b from below. Moreover, the folding chair 1 for care of this embodiment has the cross frame 23 which connects the left and right front leg parts 21a and 21b, and the left and right support members 24a and 24b are respectively the left front leg part 21a or the right front leg. It is fixed by being attached to the part 21b and the transverse frame 23.

  For this reason, the care (shower) chair 1 of this embodiment can be folded in order to wash the user's local area and the like, although the seating surfaces 51a and 51b are divided / separated into the left and right. Yes, and can be self-supported in the folded state. Although not shown, the seat 5 may be completely divided / separated into the left and right seats 5a and 5b. In this case, the caregiver or the like is connected to the seats 51a and 51b. Without being disturbed by the seat 6, the user's local portion or the like can be freely washed from directly below using the space below the seat 5.

  Moreover, the folding chair 1 for care of this embodiment can adjust the length of the left and right front legs 21a and 21b and the left and right rear legs 3a and 3b, and the left and right seats 5a and 5b can be backrested. Part 4, left and right front leg frames 21a, 21b and rear leg parts 3a, 3b can be folded so as to be aligned in substantially the same vertical plane, so left and right front leg parts 21a, 21b and left and right rear leg parts 3a, When the chair 1 is folded with the chair 3b closed, the center of gravity G of the chair 1 is disposed inside the ground contact area connecting the ground contact points of the left and right front leg portions 21a and 21b and the ground contact points of the left and right rear leg portions 3a and 3b. (See FIG. 7), it can be made to stand extremely stably.

  In the folding chair for care 1 of the present embodiment, the left support member 24a has a left support surface 240a extending substantially parallel to the cross frame 23 above the cross frame 23, and one end portion is the left front leg. It has a rod shape that is attached to the portion 21 a and has the other end attached to the transverse frame 23. Similarly to the left support member 24a, the right support member 24b also has a right support surface 240b extending substantially parallel to the cross frame 23 above the cross frame 23, and one end portion of the right support leg portion 21b. And has a bar shape with the other end attached to the transverse frame 23. Further, the other end opposite to one end of the left support member 21a is attached to the transverse frame 23 via a left auxiliary frame 25a extending upward from the transverse frame 23, and the right support member 24b. The other end opposite to the one end is also attached to the transverse frame 23 via a right auxiliary frame 25b extending upward from the transverse frame 23.

  The left and right support members 24a, 24b are rod-shaped, and the other ends of the left support member 24a and the right support member 24b opposite to the side attached to the transverse frame 23 are the left and right auxiliary frames 25a. , 25b, the seating surfaces 51a, 51b divided into the left and right sides can be firmly supported independently from the bottom, and the caregiver or the like can be viewed from the front of the chair 1 by the user. It is easy to access the local area. In particular, when the U-shaped groove 61 is provided between the left and right seat surfaces 51a and 51b as in the present embodiment, the frame traversing the front front of the groove 61 can be omitted. The property is further improved.

  In the folding chair 1 for care of this embodiment, the left seat part 5a and the right seat part 5b form the groove part 61 extended in the front-back direction between the left seat surface 51a and the right seat surface 51b by the connection seat part 6. The groove portion 61 has a bottom surface 610 that is inclined so as to be lowered rearward when the left and right front leg portions 21a and 21b and the left and right rear leg portions 3a and 3b are open. ing.

  If the left seat part 5a and the right seat part 5b are connected by the connection seat part 6 which has the U-shaped groove part 61 like this embodiment, the intensity | strength of the seat part 5 and the folding chair 1 for care will improve. Further, in the state where the front and rear, left and right leg portions 21a, 21b, 3a, 3b are opened and the chair 1 is widened, the bottom surface 610 of the groove portion 61 is inclined so as to be lowered rearward. It is possible to prevent drainage, excrement and the like generated by washing from flowing out in an unintended forward direction. In particular, when washing the user's local area or the like seated on the folding chair 1 for nursing care, the caregiver often cares for the user from the back or side of the user. If it is installed, it becomes easy to treat waste water and excrement, and it will not flow out forward and soil the feet of users and the like.

  As shown in FIG. 2, in the folding chair 1 for nursing care of this embodiment, the connection seat part 6 crosses when the left and right front leg parts 21a and 21b and the left and right rear leg parts 3a and 3b are opened. Engaging means 62 for engaging with the frame 23 is provided.

  The connecting seat portion 6 of the present embodiment is disengaged from the transverse frame 23 in a state in which the left and right and left and right leg portions 21a, 21b, 3a and 3b are closed and the chair 1 is folded, but the left and right and left and right and left and right leg portions 21a and 21a, In a state where the chairs 1 are opened by opening 21b, 3a, 3b, they are supported from below by the transverse frame 23. For this reason, when the coupling seat 6 includes the engaging means 62 that engages with the transverse frame 23, the transverse seat 23 supports the coupling seat 6 and the left and right seats 5a and 5b coupled to the coupling seat 6. Is more certain. Moreover, in this embodiment, since the rotation operation | movement of the right-and-left seat part 5a, 5b integrated with the connection seat part 6 and the opening / closing operation | movement of the right-and-left front-and-back leg parts 21a, 21b, 3a, 3b are interlocking, In the state in which the seat 6 is in the state in which the chair 1 engaged with the cross frame 23 is expanded by the engaging means 62, the care folding chair 1 is prevented from being accidentally folded.

  As shown in FIG. 2, in the folding chair 1 for nursing care of this embodiment, the connection seat part 6 crosses when the left and right front leg parts 21a and 21b and the left and right rear leg parts 3a and 3b are opened. A cue portion 63 is provided in front of the frame 23.

  Since the back surface of the connecting seat portion 6 bulges outward to form a U-shaped groove portion 61, when the left and right leg portions 21a, 21b, 3a, 3b are opened and the chair 1 is expanded, the connecting seat portion 6 may be sandwiched between the bulging portion 64 on the back surface 6 and the transverse frame 23 that supports the bulging portion 64 from below. For this reason, if the clue part 63 is formed ahead of the crossing frame 23 on the back surface of the connecting seat part 6, the caregiver's hand is prevented from being guided and pinched by the clue part 63. Further, when the chair 1 is folded by closing the left and right leg portions 21a, 21b, 3a, 3b, it is advantageous because the hand of a caregiver or the like is guided to a safe and easy position for folding. Note that the clue portion 63 may be a concave portion formed on the back surface of the connecting seat portion 6 as in the present embodiment, or may be a convex portion or a handle protruding from the connecting seat portion 6.

  FIG. 6 is a side view showing a state in which the folding chair 1 for care shown in FIG. 1 is partially omitted and the chair 1 is expanded (used). FIG. 7 is a side view showing a state in which a part of the folding chair for care 1 shown in FIG. 1 is omitted and the chair 1 is folded (stored).

  As shown in FIG. 6, in the folding chair 1 for care of this embodiment, the 1st left axis fulcrum 53a is ahead of the rearmost end Ea of the left seat part 5a, and the depth of the left seat part 5a. The first right shaft fulcrum 53b is located in front of the rearmost end Eb of the right seat portion 5b and rearward of the intermediate point Mb of the depth of the right seat portion 5b. Is arranged.

  If the first left and right shaft fulcrums 53a and 53b are arranged in front of the rearmost ends Ea and Eb of the left and right seat portions 5a and 5b, the necessary backrest portion 4 for the seat surfaces 51a and 51b is provided. In a state where the left and right front legs 21a and 21b and the left and right rear legs 3a and 3b are closed and the chair 1 is folded while securing the height, the left and right seat parts 5a and 5b are respectively placed below the backrest part 4. It can be stored compactly so as to be submerged. In addition, the first left and right shaft fulcrums 53a and 53b are rearward of the intermediate points Ma and Mb of the depths of the left and right seat portions 5a and 5b, respectively. If the user is seated rearward from the midpoint Ma and Mb of the depths of the left and right seat portions 5a and 5b, the seat surface 51a , 51b is prevented from unexpectedly jumping up and rotating.

  As shown in FIGS. 6 and 7, in the folding chair 1 for nursing care according to the present embodiment, the left seat portion 5a is the first seat disposed forward of the first left shaft fulcrum 53a of the left seat portion 5a. At the left shaft fulcrum 54a, one end is pivotally supported by the other end of the left link 8a pivotally supported by the left front leg 21a, and the right seat 5b. Is a second right shaft fulcrum 54b disposed in front of the first right shaft fulcrum 53b of the right seat portion 5b, with one end pivotally supported by the right front leg portion 21b. The other end of the link 8b is pivotally supported. When the left and right front legs 21a and 21b and the left and right rear legs 3a and 3b are shifted from the open state (FIG. 6) to the closed leg state (FIG. 7), or the left and right front legs 21a and 21b and the left and right rear legs 3a and 3b. When shifting from the closed leg state (FIG. 7) to the open leg state (FIG. 6), the rotation trajectory Pa of the first left axis fulcrum 53a related to the left front leg 21a is the second left axis fulcrum related to the left front leg 21a. The rotation trajectory Pb of the first right axis fulcrum 53b related to the right front leg 21b intersects the rotation trajectory Qb of the second right axis fulcrum 54b related to the right front leg 21b. .

  The left and right seat portions 5a and 5b are pivotally supported by the left and right rear legs 3a and 3b at the first left and right pivot points 53a and 53b, respectively, and the first left and right pivot points 53a and 53b are respectively supported. Left and right front legs 21a, 21b via left and right links 8a, 8b pivotally supported by left and right front legs 21a, 21b at second left and right shaft support points 54a, 54b arranged in front of 53b. If the user is seated at any position of the seating surfaces 51a and 51b by the two-point pivotal support of the left and right seats 5a and 5b, an unintentional seating surface due to the load of the user The rotation of 51a and 51b can be reliably prevented.

  Further, in the present embodiment, the left and right and left and right legs 21a, 21b, 3a, and 3b are opened from the state in which the left and right and left legs 21a, 21b, 3a, and 3b are opened and the folding chair 1 is expanded (FIG. 6). When shifting to the closed and folded state (FIG. 7) or vice versa, the rotation trajectory Pa of the first left shaft fulcrum 53a with respect to the left front leg 21a or the right front leg 21b or the first The rotation trajectory Pb of the right axis fulcrum 53b, the rotation trajectory Qa of the second left axis fulcrum 54a or the rotation trajectory Qb of the second right axis fulcrum 54b with respect to the left front leg 21a or the right front leg 21b, respectively. Therefore, the relative positional relationship between the first left and right shaft fulcrums 53a and 53b and the second left and right shaft fulcrums 54a and 54b can be freely changed.

  For example, in the state where the left and right front and rear legs 21a, 21b, 3a, 3b are opened and the chair 1 is widened (FIG. 6), it is disposed in front of the first left and right pivots 53a, 53b in a substantially horizontal plane. In the state where the chair 1 is folded with the left and right front and rear leg portions 21a, 21b, 3a, 3b closed (FIG. 7) to the second left and right shaft fulcrums 54a, 54b respectively, It can move so that it may be arranged above the left and right pivot points 53a and 53b.

  For this reason, in the folding chair 1 for care of this embodiment, the right and left seat portions 5a and 5b are rotated at an angle of 90 degrees or more with respect to the left and right front leg portions 21a and 21b, and the backrest portion 4 As a result, the front leg frames 2a and 2b and the rear leg portions 3a and 3b can be rotated so as to be aligned in the substantially same vertical plane, so that they can be folded into an extremely compact form. Moreover, the folding chair 1 for care of this embodiment can fold or extend the chair 1 by one operation | movement by moving the leg parts 21a, 21b, 3a, 3b on either side, and right and left seat surfaces 5a, 5b. Because it can, it is excellent in operability.

  FIG. 5 is a rear view showing a state in which the care folding chair 1 shown in FIG. 1 is folded.

  As shown in FIG. 5, in the folding chair 1 for care of this embodiment, the rotation axis R connecting the first left axis fulcrum 53a and the first right axis fulcrum 53b in the vertical cross section Z in the vertical direction. The distance L from the front end of the left seat 5a or the front end of the right seat 5b is shorter than the height H from the rotation axis R to the lower end of the backrest 4 in the same longitudinal section Z. When the left and right front and rear legs 21a, 21b, 3a, 3b are closed and the chair 1 is stood and folded, the width W between the left side of the left seat 5a and the right side of the right seat 5b is the same. It is shorter than the inner method Wi between the backrest support portions 22 and / or the inner method Wi between the left and right armrests 7a, 7b attached to the backrest support portion 22 in the horizontal cross section X.

  The entire shape of the seat portion 5 including the left and right seat portions 5a and 5b and the connecting seat portion 6 and the shape of the backrest portion 4 pass through the first left and right shaft fulcrums 53a and 53b in a vertical vertical section Z. If the distance L from the rotation axis R to the front end portion of the seat portion 5 is shorter than the height H from the rotation axis R to the lower end portion of the backrest portion 4, in order to improve the user's safety and comfortable sitting comfort The left and right leg parts 21a, 21b, 3a, 3b are closed and the chair 1 is folded while ensuring the necessary area and height required for the right and left seat surfaces 51a, 51b and the backrest part 4. In the state, the seat portion 5 can be stored in a compact manner so as to be submerged below the backrest portion 4. Further, when the chair 1 is folded, the width W of the entire seat portion 5 including the left and right seat portions 5a, 5b and the connecting seat portion 6 is set to the inner method Wi between the backrest support portions 22 in the same horizontal cross section X. The same effect as described above can also be obtained when the inner length Wi between the left and right armrests 7a and 7b attached to the back support 22 is shorter.

  As shown by a solid line and a dotted line in FIG. 1, in the folding chair 1 for care according to this embodiment, the left armrest 7 a is rotatably attached to the back support portion 22 of the left front leg frame 2 a, A right armrest 7b is rotatably attached to the backrest support portion 22 of the front leg frame 2b. The left armrest 7a and the left armrest 7b are respectively arranged on the side surface of the left seat 5a when the left and right front legs 21a, 21b and the left and right rear legs 3a, 3b are closed and the left armrests 7a, 7b are flipped up. A protruding left holding portion 71a and a right holding portion 71b are provided to lock the seat portion 5 by contacting the step (recess portion) and the step (recess portion) on the side surface of the right seat portion 5b.

  When the left and right armrests 7a and 7b are provided on the back support portions 22 of the left and right front leg frames 2a and 2b, the user uses the armrests 7a and 7b, so that the user's seating posture, standing leg posture and both It can assist and stabilize the movement when changing between postures. Further, when the left and right armrests 7a and 7b are attached to the backrest support portion 22 so as to be rotatable (foldable), when the armrests 7a and 7b are flipped up, when the user moves to the chair 1 or from the chair 1 In addition to improving accessibility when moving, when the chairs 1 are not used with the left and right and left and right legs 21a, 21b, 3a, 3b closed, the armrests 7a, 7b are flipped up and the left and right seats 5a, 5b. Since the backrest part 4, the left and right front leg frames 2a, 2b and the rear leg parts 3a, 3b can be aligned in substantially the same vertical plane, the compact folding property of the nursing folding chair 1 of the present embodiment is hindered. There is nothing to do.

Further, when the left and right armrests 7a and 7b are provided with left and right holding portions 71a and 71b that are engaged with each other by interfering with the side surfaces of the left and right seat portions 5a and 5b, the left and right front and rear legs 21a, 21b, and 3a are provided. , 3b can be prevented from unintentionally opening the left and right leg portions 21a, 21b, 3a, 3b from the state in which the chair 1 is folded. In particular, the holding portions 71a and 71b are provided at positions (long distances) away from the first left and right shaft fulcrums 53a and 53b of the left and right seat portions 5a and 5b or the rotation axis R passing through the shaft fulcrums. The leg portions 21a, 21b, 3a, 3b can be reliably prevented from opening against the large rotational moment. The left and right holding portions 71a and 71b may be, for example, concave portions and / or convex portions formed on the side surfaces of the left and right armrests 7a and 7b, respectively, and are particularly held by the left and right armrests 7a and 7b. Without providing the portions 71a and 71b, the holding portion may be provided at the position of the backrest support portion 22 of the left and right front leg frames 2a and 2b that interferes with the side surfaces of the armrests 7a and 7b.

1 ······ Folding chairs 2a, 2b ··· Left and right front leg frames 21a, 21b ··· Left and right front legs 22 ···· Back support 23... Cross frame 24a, 24b Left and right support members 240a and 240b Left and right support surfaces 25a and 25b Left and right auxiliary frames 3a and 3b.・ ・ Left and right rear legs 31a, 31b ・ ・ ・ Left and right brackets 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Backrest 41 ・ ・ ・ ・ ・ ・ ・ ・ Backrest body 42 ・ ・ ・ ・ ・ ・ ・ ・Pad 420 ······························································································· Female hole 5 ········· Seats 5a and 5b ··· Left and right seats 51a and 51b · · · Left and right seats 5 0 ····················································· 51 ························ 52 Second left and right axis fulcrum 6 ············ Connection seat 61 ·················································· Alignment means 63... Cue portion 64... Swelled portion 7 a, 7 b .. Left and right armrests 71 a, 71 b .. Holding portion 8 a, 8 b.・ ・ ・ Left and right links Ea, Eb ・ ・ ・ ・ ・ Left and right end of rear seat G ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Center of gravity of nursing folding chair L ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・Distance H ・ ・ ・ ・ ・ ・ ・ ・ Height W ・ ・ ・ ・ ・ ・ ・ ・ Width Wi ・ ・ ・ ・ ・ ・ ・ ・ Inner method between backrest support parts or armrests Ma, Mb ・ ・ ・ ・・ The midpoint of the left and right seat depth Pa, Pb ...... Rotation trajectory of the first left and right shaft fulcrum Qa, Qb ... Rotation trajectory of the second left and right shaft fulcrum R ... Rotation axis X ······· Horizontal cross section Z ······· Vertical cross section

Claims (13)

A front leg frame comprising a front leg part and a back support part extending upward from the front leg part;
A rear leg portion pivotally supported by the front leg portion;
A backrest portion attached to the backrest support portion; a left seat surface at an upper portion; a right seat surface spaced from the left seat surface; and between the left seat surface and the right seat surface Has a groove portion extending in the front-rear direction, and a seat portion in which the back surface of the groove portion bulges outward, and is pivotally supported by the rear leg portion at a first pivot point. And the seat portion
A folding chair for nursing that can be independent by the front and rear legs when the front and rear legs are closed.   The folding for care according to claim 2, wherein the first pivot point is disposed in front of a rearmost end of the seat and rearward of an intermediate point of the depth of the seat. Chair. The seat is a second shaft fulcrum disposed forward of the first shaft fulcrum of the seat, and one end of the link is pivotally supported by the front leg. When the front leg and the rear leg are shifted from the open leg state to the closed leg state or when the front leg and the rear leg part are shifted from the closed leg state to the open leg state. 3. The folding for nursing care according to claim 1, wherein a rotation trajectory of the first pivot point with respect to the front leg portion intersects with a pivot trajectory of the second pivot point with respect to the front leg portion. Chair.   The distance from the rotation axis passing through the first pivot point to the front end of the seat portion in the vertical longitudinal section is the lower end of the backrest portion from the rotation axis passing through the first pivot point in the same longitudinal section. The folding chair for nursing care according to any one of claims 1 to 3, wherein the folding chair is shorter than a distance to the part. A pair of left and right front leg frames and a right front leg frame including a front leg portion and a back support portion extending upward from the front leg portion;
A pair of left and right left rear legs and right rear legs pivotally supported on each of the left front leg and the right front leg,
A backrest attached to the backrest support;
A transverse frame connecting the left front leg and the right front leg;
Above the transverse frame has a left support surface extending substantially parallel to the transverse frame, and one end is attached to the left front leg and the other end is attached to the transverse frame The left support member being
Above the transverse frame, extends substantially parallel to the transverse frame, has a right support surface spaced from the left support surface, and one end is attached to the right front leg. And the right support member whose other end is attached to the transverse frame;
It has a left seat surface at the top, and is pivotally supported by the left rear leg at the first left pivot point, and the left and right front legs and left and right rear legs are open. A left seat portion supported by the left support surface, and a right seat surface spaced from the left seat surface at an upper portion, and rotated to the right rear leg portion at a first right shaft fulcrum. A right seat portion supported by the right support surface when the left and right front leg portions and the left and right rear leg portions are open.
A nursing folding chair that can stand on its own by the left and right front legs and the left and right rear legs when the left and right front legs and the left and right rear legs are closed. The left support member has a bar shape, the other end of the left support member is attached via a left auxiliary frame extending upward from the transverse frame, and the right support member has a bar shape, The other end portion of the right support member is attached via a right auxiliary frame extending upward from the transverse frame.   The left seat portion and the right seat portion are connected by a connecting seat portion so as to form a groove portion extending in the front-rear direction between the left seat surface and the right seat surface, and the groove portion is The folding chair for care according to claim 5 or 6, further comprising a bottom surface that is inclined so as to be lowered rearward when the left and right front legs and the left and right rear legs are open. .   8. The nursing folding according to claim 7, wherein the connecting seat portion includes an engaging means that engages with the transverse frame when the left and right front legs and the left and right rear legs are open. Chair.   The said connection seat part is provided with the cue part arrange | positioned ahead of the said crossing frame, when the right-and-left front leg part and the right-and-left rear leg part are open legs. Folding chair for nursing.   The folding chair for care according to claim 9, wherein the handhold portion is a concave portion and / or a convex portion formed on a back surface of the connecting seat portion, or a handle protruding from the connecting seat portion.   The first left axis fulcrum is disposed in front of the rearmost end of the left seat and behind the midpoint of the depth of the left seat, and the first right axis fulcrum is The nursing care device according to any one of claims 5 to 10, wherein the nursing care device is disposed in front of a rearmost end portion of the right seat portion and rearward of an intermediate point of the depth of the right seat portion. Folding chair. The left seat has a second left shaft fulcrum disposed forward of the first left shaft fulcrum of the left seat, and one end thereof is pivotally supported by the left front leg. Is pivotally supported by the other end of the left link,
The right seat portion is pivotally supported at a second right shaft fulcrum disposed in front of the first right shaft fulcrum of the right seat portion so that one end of the right seat portion can pivot on the right front leg portion. Is pivotally supported by the other end of the right link, and when the left and right front legs and left and right rear legs transition from the open leg to the closed leg or between the left and right front legs and left and right rear legs. When shifting from the closed leg state to the open leg state, the rotation trajectory of the first left axis fulcrum for the left front leg intersects the rotation trajectory of the second left axis fulcrum for the left front leg, and 12. The rotation trajectory of the first right axis fulcrum related to the right front leg portion intersects with the rotation trajectory of the second right axis fulcrum related to the right front leg portion. The folding chair for nursing care according to item 1.   In the vertical cross section in the vertical direction, the distance from the rotation axis connecting the first left axis fulcrum and the first right axis fulcrum to the front end of the left seat or the front end of the right seat is the same. The vertical cross section is shorter than a distance from a rotation axis connecting the first left axis fulcrum and the first right axis fulcrum to a lower end portion of a backrest portion. The folding chair for care according to the item.

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