JP6143334B2 - Bathroom chair - Google Patents

Description

  The present invention relates to a chair, and more particularly to a bathroom chair used in a bathroom.

  It is convenient for a sick person, an elderly person, a physically handicapped person, etc. to sit on a chair with a backrest and wash their body when taking a bath. And such a chair is provided with the seat part on which a user sits, the backrest part from which a user (sitting person) can crawl his back, and the leg part which supports a seat part and a backrest part.

  Furthermore, in the bathroom chair of Patent Document 1 and the like, the rear leg is foldable with respect to the front leg with the backrest part attached, and the leg part is folded while rotating the seat part upward, so that it can be folded when not in use. Some are compact and have a smaller footprint in a narrow bathroom.

  In addition, some bathroom chairs such as Patent Document 2 make it easy for a seated person to change the direction of the body by making the seat portion rotatable by a rotation mechanism with respect to the leg portion.

Japanese Patent Laid-Open No. 2007-037608 JP 2005-110785 A

  However, in a conventional bathroom chair, for example, in the case where a leg is provided with a link that inclines the seating surface when folded, the folding mechanism such as this link interferes with the rotating mechanism. Since it becomes easy, it is difficult to add a rotation mechanism easily.

  If the rotation mechanism for rotating the seat is provided on the one with the backrest integrated with the front leg, it is difficult to use the backrest in a rotated posture because only the seat rotates. . Further, in this case, when the seat portion is rotated, the backrest portion easily interferes with the seated person, so that the range of rotation (available rotation angle) is limited by this interference, and the rotation angle is likely to be narrowed. There's a problem.

  Therefore, the present invention has been invented in view of the above-mentioned conventional problems. And the place made into the objective of this invention is providing the chair which can rotate a seat with respect to a leg part, and also can fold a leg part.

First form of the bath chair according to the present invention, a seat having a seating surface attached to the seat, a rear-side supporting portions you support the seated person from the rear side, and a leg portion supporting the seat . The seat has the seat surface and the body portion to which the back side support portion is integrally attached, and a connecting portion disposed in a plane parallel to the seat surface and having the leg portion connected to the lower end portion. A rotation mechanism portion that is disposed between the main body portion and the connecting portion and that connects the main body portion to the connecting portion so as to be rotatable around a first rotation axis along a normal direction of the seating surface. Prepare . Before Kiashi portion, the parallel beauty in a direction parallel to the direction of the second rotation axis orthogonal to the first rotation axis, and front legs of a pair of upper is extended toward the rear, of the second rotary shaft provided parallel beauty in a direction parallel to the direction, and the pair of rear legs which top is extended toward the front, and a folding mechanism, the. The folding mechanism, the legs connecting the upper portion of the second rotating axis to be rotatable in the pair of rear legs so as to have a folded state and the normal state to an upper portion of the pair of front legs. The leg portion is fixed to a lower end portion of the connecting portion in one of the upper portion of the pair of front legs and the upper portion of the pair of rear legs.

In the bathroom chair according to the second aspect of the present invention, in the first aspect, the leg portion has an open leg state that opens in a U-shape downward in a side view as the normal state. The folding mechanism includes a pivotal support that connects the pair of front legs and the pair of rear legs. The pivot portion has a bottom line that is a line connecting the pair of front legs and the lower ends of the pair of rear legs so that the pair of front legs and the pair of rear legs stand independently even when the legs are in the folded state. Located at the apex of an equilateral triangle.

In the bathroom chair of the 3rd form which concerns on this invention, in the 1st or 2nd form, the said connection part is arrange | positioned in the surface parallel to the said seat surface, and cross | intersects in the position where the said 1st rotating shaft passes. Have two support bars.

The fourth embodiment of the bathroom chair according to the present invention, in any one of the first to third embodiments, obtain Preparations restriction mechanism. The restriction mechanism is configured to prohibit switching of the leg portion between the normal state and the folded state when the seat is not positioned at a predetermined position with respect to the leg portion. The prescribed position is a position where the front direction of the seat coincides with the front direction of the front leg .

In the bathroom chair according to a fifth aspect of the present invention, in the fourth aspect, the restriction mechanism includes a protrusion attached to the leg portion and a flange portion attached to the seat. The protrusion is located at the first position when the leg is in the normal state, and is located at the second position when the leg is in the folded state. The flange portion is disposed between the first position and the second position so as to inhibit movement of the protrusion between the first position and the second position. The flange portion has an opening through which the protrusion is passed at a portion facing the protrusion when the seat is located at the specified position.

A bathroom chair according to a sixth aspect of the present invention is the lock chair according to any one of the first to third aspects, and releases the holding of the leg by the lock device according to a user operation. obtain Bei and release device, the. The locking device is configured to hold the leg in the normal state. The release device is configured not to release the holding of the leg by the lock device in response to a user operation unless the seat is located at a predetermined position with respect to the leg. The prescribed position is a position where the front direction of the seat coincides with the front direction of the front leg.

In a bathroom chair according to a seventh aspect of the present invention, in the sixth aspect, the lock device includes a lock tool and a lock hole. The locking device is provided on one of the pair of front legs and the pair of rear legs. The lock hole is provided in the other of the pair of front legs and the pair of rear legs, and faces the lock when the leg portion is in the normal state. The lock tool includes a lock shaft, a holding mechanism, and a release tool. The lock shaft is movably disposed between a third position where the lock member is fitted to the lock hole and a fourth position which is not fitted to the lock hole when the lock tool is opposed to the lock hole. The holding mechanism is configured to hold the lock shaft in the third position. The release tool is movable between a fifth position where the release tool does not release the holding of the lock shaft by the holding mechanism and a sixth position where the release tool releases the holding of the lock shaft by the holding mechanism. Placed in. The release tool is configured to release the holding of the lock shaft by the holding mechanism and move the lock shaft to the fourth position when the release tool is located at the sixth position. The release device includes an operation tool, a manual operation unit, and a transmission mechanism. The operating tool is movably disposed between a seventh position where the operating tool can not contact the releasing tool and an eighth position where the operating tool can contact the releasing tool. The manual operation unit is disposed on the back side support unit. The transmission mechanism is configured to move the operating tool from the seventh position to the eighth position in response to an operation of the manual operation unit by a user. The operation tool and the release tool constitute a connection mechanism when the seat is located at the specified position. The coupling mechanism is configured to move the release tool from the fifth position to the sixth position in response to the movement of the operation tool from the seventh position to the eighth position.

The present invention is provided with the above-described configuration, so that it is difficult to cause interference between the back-side support portion and the seated person and between the rotation mechanism portion and the folding mechanism portion during rotation of the seat portion in the rotation mechanism portion. It is possible to easily reduce the limitation on the rotation angle caused by the interference .

It is a perspective view which shows the leg open state of the chair for bathrooms of Embodiment 1. FIG. It is a side view which shows the closed leg state of the chair for bathrooms of Embodiment 1. FIG. It is a front view which shows the open leg state of the chair for bathrooms of Embodiment 1. FIG. It is a rear view which shows the leg-opened state of the bathroom chair of Embodiment 1. It is a side view which shows the leg-opening state of the bathroom chair of Embodiment 1. It is a top view which shows the leg open state of the chair for bathrooms of Embodiment 1. FIG. It is a figure which shows the state in the middle of rotation of the leg part in the part shown by B1 in FIG. It is a perspective view which shows the state which rotated the seat part of the chair for bathrooms of Embodiment 1. FIG. It is a bottom view which shows the chair for bathrooms of Embodiment 1. FIG. It is a partial rear view which shows the horizontal part periphery of the chair for bathrooms of Embodiment 1. FIG. FIG. 3 is a perspective view showing a bottom plate in the first embodiment. FIG. 3 is a cross-sectional view showing the periphery of a bearing in the first embodiment. It is a perspective view which shows the chair for bathrooms of Embodiment 1. FIG. It is a fragmentary perspective view which shows the rotation restricting device periphery of the bathroom chair of Embodiment 1. It is a perspective view which shows the chair for bathrooms of Embodiment 1. FIG. It is a fragmentary perspective view which shows the rotation restricting device periphery of the bathroom chair of Embodiment 1. It is a perspective view which shows the leg-opening state of the bathroom chair of Embodiment 2. It is sectional drawing which shows the closed leg state of the bathroom chair of Embodiment 2. It is a side view which shows the closed leg state of the chair for bathrooms of Embodiment 2. It is a front view which shows the leg-opening state of the bathroom chair of Embodiment 2. It is a rear view which shows the leg-opening state of the bathroom chair of Embodiment 2. It is a side view which shows the leg-opening state of the bathroom chair of Embodiment 2. It is a top view which shows the leg-opening state of the chair for bathrooms of Embodiment 2. It is a fragmentary perspective view which shows the state in the middle of rotation of the leg part of the bathroom chair of Embodiment 2. It is an enlarged view of the part shown by B2 in FIG. It is a perspective view which shows the state which rotated the seat part of the chair for bathrooms of Embodiment 2. FIG. It is a bottom view which shows the chair for bathrooms of Embodiment 2. FIG. It is sectional drawing which shows the leg-opening state of the bathroom chair of Embodiment 2. It is an enlarged view around the locking device of the bathroom chair according to the second embodiment. It is an enlarged view around the locking device of the bathroom chair according to the second embodiment. It is a perspective view which shows the chair for bathrooms of Embodiment 2. FIG. It is a fragmentary perspective view which shows the locking device periphery of the bathroom chair of Embodiment 2. FIG. It is a perspective view which shows the chair for bathrooms of Embodiment 2. FIG. It is a fragmentary perspective view which shows the locking device periphery of the bathroom chair of Embodiment 2. FIG.

(Embodiment 1)
The chair 1 (1A) of this embodiment is a bathroom chair used in a bathroom. As shown in FIGS. 1 to 6, the chair 1 </ b> A of the present embodiment includes a cushion part 11 that defines a seat having a seating surface 10 a, a leg part 2 that supports the cushion part (seat) 11, a rotation mechanism part 16, and the like. .

  In general, the chair 1A is placed on a horizontal surface when in use. Therefore, in the following description, the upward direction in FIG. 5 is the upward direction of the chair 1A, the downward direction in FIG. 5 is the downward direction of the chair 1A, the left direction in FIG. 5 is the forward direction of the chair 1A, and the right direction in FIG. It is called 1A backward direction. 4 is referred to as the left direction of the chair 1A, and the right direction in FIG. 4 is referred to as the right direction of the chair 1A.

  The rotation mechanism unit 16 is configured to connect the seat (cushion unit) 11 to the leg unit 2 so as to be rotatable about the first rotation axis A1 along the normal direction of the seat surface 10a (the vertical direction in FIG. 6). Composed.

  The leg portion 2 includes a first leg (in this embodiment, a front leg) 3, a second leg (in this embodiment, a rear leg) 4, and a folding mechanism portion 6. The folding mechanism unit 16 connects the second leg to the first leg so as to be rotatable around a second rotation axis A2 that intersects the first rotation axis A1 so that the leg 2 has a normal state and a folded state. Configured as follows. In the present embodiment, the second rotation axis A2 is orthogonal to the first rotation axis A1.

  Hereinafter, the chair 1 of the present embodiment will be described in detail.

  As shown in FIGS. 1 to 6, the leg portion 2 of the chair (bathroom chair) 1 of the present embodiment includes a pair of front legs (first legs) 3 and a pair of rear legs (second legs). ) 4. The front leg 3 and the rear leg 4 are each formed of a hollow pipe.

  The front leg 3 has a first end (lower end in FIG. 5) and a second end (upper end in FIG. 5) in the length direction. The first end of the front leg 3 defines the foot 3b. Each pair of front legs 3 has an upper portion (second end) that extends horizontally rearward to form a horizontal portion 3a. The rear leg 4 has a first end (lower end in FIG. 5) and a second end (upper end in FIG. 5) in the length direction. The first end of the front leg 4 defines a foot 4b. The upper part of each pair of rear legs 4 extends forward and forms a horizontal part 4a.

  Further, the front leg 3 and the rear leg 4 are connected via a folding mechanism 6.

  As shown in FIG. 7, the folding mechanism 6 includes a front hinge 6a attached to the horizontal part 3a of each front leg 3, a rear hinge 6b attached to the horizontal part 4a of each rear leg 4, a front hinge 6a and a rear hinge. And a pivot 6c that connects 6b. And the leg part 2 is connecting the front hinge 6a and the rear hinge 6b so that rotation is possible up and down in the state which has arrange | positioned each rear hinge 6b under each front hinge 6a. That is, the folding mechanism unit 6 is configured to connect the first leg (front leg) 3 and the second leg (rear leg) 4 at the second ends (horizontal parts) 3a and 4a.

  Therefore, the leg part 2 can switch a state by this rotation. The leg portion 2 is in such a switchable state as shown in FIGS. 3 to 6, and the front leg 3 and the rear leg 4 are opened in a U-shape with the front leg 3 facing downward, as shown in FIG. Such a lower leg portion of the front leg 3 and the rear leg 4 has a closed leg state (folded state) close to each other.

  The normal state is a state in which the user can sit on the chair 1 (use state of the chair 1). For example, the normal state is a state in which the seat surface 10a is parallel to the installation surface when the chair 1 is installed on the installation surface (see FIGS. 3 to 6).

  The folded state is a state in which the user cannot sit on the chair 1. In other words, the folded state is a state for storing the chair 1 (see FIG. 2). The folded state is a state in which the angle around the second rotation axis A2 between the front leg (first leg) 3 and the rear leg (second leg) 4 is smaller than the normal state. In the folded state, the first leg 3 does not intersect the second leg 4.

  In other words, the leg portion 2 rotates freely (openable and closable) between these two states. The pivot 6c is set so as to be positioned at the apex of an isosceles triangle having a base connecting the lower end of the front leg 3 and the rear leg 4 so that the leg 2 can be made independent in a closed leg state. This is preferable. That is, the leg 2 is configured to be independent by the first leg 3 and the second leg 4 even in the folded state.

  Moreover, as shown in FIGS. 3-6, the seat part 10 is attached to the upper end part of the horizontal part 3a.

  When the leg portion 2 is in the open leg state, the seat portion 10 can be seated because the seat surface 10a is substantially parallel to the horizontal plane. The seat portion 10 includes a seat body 12 having a rotation mechanism portion 16 and a cushion portion 11 that is detachable from the seat body 12.

  In addition, since the seat part 10 has the rotation mechanism part 16, the case where the front-back direction D1 of the seat part 10 differs from the front-back direction D2 of the leg part 2 with the rotation by the rotation mechanism part 16 arises. Therefore, unless otherwise specified, the following description is based on the state in which the front-rear direction D1 of the seat 10 and the front-rear direction D2 of the leg 2 are parallel and the fronts of each other coincide.

  The cushion portion 11 has a substantially rectangular shape in a plan view and is formed of a soft member having elasticity or the like, and is made of, for example, a soft foam resin. Furthermore, the cushion part 11 has the seat surface 10a in an upper end part. The cushion portion 11 has a protrusion at the lower end, and is detachably attached to the seat body 12 by fitting the protrusion into the seat body 12.

  The seat body 12 includes an upper part (main body part) 13 for attaching the cushion part 11 to the upper end part, a lower part (connecting part) 14 with the leg part 2 connected to the lower end part, and a rotation for rotating the upper part 13 with respect to the lower part 14. The mechanism part 16 is provided. The seat body 12 is supported by the lower part 14 so that the upper part 13 is rotatable via a rotation mechanism part 16.

  In other words, the seat body 12 is partitioned into an upper portion 13 and a lower portion 14 with the rotation mechanism portion 16 as a reference. Therefore, as shown in FIG. 8, the seat main body 12 has the front-rear direction of the upper portion 13 coincident with the front-rear direction D1 of the seat portion 10 and the front-rear direction of the lower portion 14 coincides with the front-rear direction D2 of the leg portion 2. It is rotated by the rotation mechanism unit 16.

  The upper part 13 is a main body part (first main body part) 13 that supports a seated person (user). In this embodiment, the cushion part 11 is attached on the upper part 13, and the upper surface of the cushion part 11 prescribes | regulates the seat surface 10a. However, the cushion part 11 is not essential. When the cushion part 11 is not provided, the upper part 13 is used as the seat of the chair 1, and the upper surface of the upper part 13 defines the seating surface 10a.

  The lower part 14 is a connecting part that connects the leg part 2 to the rotating mechanism part 16. The lower part (connection part) 14 has two support rods 14a. The two support bars 14a are arranged in a plane parallel to the seating surface 10a and intersect at a position where the first rotation axis A1 passes. The support bar 14a is, for example, a hollow pipe. The front leg 3 is connected to one end of the support bar 14a.

  In other words, as shown in FIGS. 9 and 10, the lower portion 14 is formed by intersecting two hollow pipes 14a in an X shape in plan view. The lower leg 14 has the front leg 3 fixed to the end of the X-shape. Further, in the lower part 14, the X-shaped intersection is located at the rotation center 16 a of the rotation mechanism unit 16.

  Note that the leg portion 2 is not necessarily fixed to the rotation mechanism portion 16 by the front leg (first leg) 3. For example, the leg part 2 may be fixed to the rotation mechanism part 16 by the rear leg (second leg) 4. That is, the leg portion 2 only needs to be fixed to the rotation mechanism portion 16 on one of the first leg 3 and the second leg 4.

  And the lower part 14 is being fixed to the lower surface board 17 (it mentions later for details) of the rotation mechanism part 16 at an upper end part. For example, the lower plate 14 has a bottom plate 17 fixed by bolts and nuts or the like at a position overlapping the rotation center 16a. Further, on the diameter of the rotation circle of each pipe 14a, there are two screws to be rotated (total of four locations) with screws or the like. A bottom plate 17 is fixed.

  As shown in FIGS. 9 to 12, the rotation mechanism unit 16 includes a lower surface plate (first plate) 17, an upper surface plate (second plate) 18 (see FIGS. 3 to 6), a bearing 29, and position definition. The lower surface plate 17 and the upper surface plate 18 are made of resin. The lower surface plate 17 is substantially cylindrical and is formed to open upward. The bottom plate 17 is fixed to the lower portion 14 at four locations near the outer peripheral edge of the bottom of the cylinder and the center of the bottom. The upper surface plate 18 is substantially cylindrical and is formed to open downward.

  The lower surface plate 17 and the upper surface plate 18 are positioned in a state where the axial centers of the cylinders in plan view are substantially overlapped (substantially concentric). An annular groove 19 for bearing is provided on the upper end surface of the lower surface plate 17 and the lower end surface of the upper surface plate 18. The annular groove 19 is formed substantially concentrically at a position facing the axial direction. A bearing 29 is arranged between the annular grooves 19. The bearing 29 includes a plurality of spheres 21 arranged side by side in a circle, a defining plate 22 that defines a circumferential interval between the spheres 21, and a groove reinforcing plate 23 that covers and reinforces the annular groove 19. Made of stainless steel.

  As a result, the rotation mechanism 16 has a rotation center 16a at the approximate center of the circle of the lower surface plate 17, and the upper surface plate 18 is rotatable in the circumferential direction of this circle. In other words, the upper surface plate 18 rotates relative to the lower surface plate 17 about the axis of the cylindrical axis (circumferential direction of the cylinder). Therefore, the front-rear direction of the upper surface plate 18 coincides with the front-rear direction D1 of the seat portion 10, and the front-rear direction of the lower surface plate 17 coincides with the front-rear direction D2 of the leg portion 2. Hereinafter, the circumferential direction of the rotation mechanism unit 16 is simply referred to as the circumferential direction, and is used as a reference for the direction.

  The position defining portion 24 includes a recess 25 provided in the lower surface plate 17, a partition plate 26 that partitions the recess 25, a lock pin (not shown) that can be inserted into and removed from the recess 25, and a lock lever 28 that moves the lock pin. . The concave portions 25 are provided on the upper end surface of the lower surface plate 17, and a plurality of the concave portions 25 are provided at predetermined intervals in the circumferential direction.

  The partition plate 26 is made of stainless steel, and is fixed to the lower surface plate 17 with its plate surface in contact with the opening edge of the recess 25. The partition plate 26 has a plurality of through holes 26a, and the number of the through holes 26a is substantially the same as or more than that of the recesses 25. The through holes 26a are arranged at substantially equal intervals in the circumferential direction. For example, the through holes 26a are formed in the partition plate 26 at intervals of about 30 ° in the circumferential direction, and the through holes 26a are positioned to insert the lock pins. It functions as the hole 27.

  In other words, the bathroom chair 1 forms the positioning hole 27 by partitioning the recess 25 by the edge of the through hole 26a. Accordingly, the bathroom chair 1 can easily form the positioning hole 27 in the lower surface plate 17 by suppressing the lowering of the strength of the lower surface plate 17 and the positioning hole 27 compared to the case where the positioning hole 27 is formed only by resin molding. can do.

  The lock lever 28 is substantially H-shaped in plan view and is attached to the upper surface plate 18. The lock lever 28 performs a so-called seesaw motion in which the first end portion on the inner peripheral side and the second end portion on the outer peripheral side of the rotating circle are alternately moved up and down. Further, the lock lever 28 has a lock pin attached to the first end and an operation piece 28a attached to the second end. Therefore, the position defining unit 24 can move the lock pin up and down by operating the operation piece 28a. Then, the lock pin is switched between a state in which the lock pin is fitted in the positioning hole 27 and a state in which the lock pin is extracted from the positioning hole 27 with the vertical movement.

  Thus, the rotation mechanism portion 16 is held in a non-rotatable state by the position defining portion 24 by the lock pin being fitted into the positioning hole 27 and is defined at a predetermined rotational position. Then, the rotation mechanism unit 16 can be rotated by releasing the position regulation (holding) by extracting the lock pin from the state defined by the rotation position.

  As shown in FIGS. 3 to 6, the upper part (main body part) 13 is fixed to the upper end part of the upper surface plate 18, and the rotation center 16 a of the rotation mechanism part 16 is located substantially at the center in plan view. The upper portion 13 has an operation piece 28a projecting leftward and rightward in a plan view, and the operation piece 28a can be operated in a posture in which a seated person is seated. The upper portion 13 has a substantially rectangular shape that is substantially the same shape as the planar cushion portion 11 and is made of a resin that is harder than the cushion portion 11. And the back side support part 30 is attached to the upper part 13, and the back side support part 30 stands up from the rear end of the upper part 13.

  The back side support part 30 includes a main body part (second main body part) 31 that supports a seated person from the back side, a cushion part 32 made of a soft foam resin, and an attachment part 33 that fixes the main body part 31 to the upper part 13. Prepare. In addition, the front-back direction of the back side support part 30 corresponds with the front-back direction D1 of the seat part 10. FIG.

  The main body 31 has a cushion part (second cushion part) 32 detachably attached to the front end surface. And the main-body part 31 is extended toward the front from the lower end, and the attaching part 33 is provided. The back side support part 30 is fixed to the upper part 13 via the attachment part 33, and the back side support part 30 rotates relative to the lower part 14 together with the cushion part 11 and the upper part 13.

  Moreover, the back side support part 30 is the backrest part 30a, for example. In the backrest 30a, the support post 37 has a downward U-shape, and is formed of, for example, a stainless steel pipe. The column portion 37 is provided with a main body portion 31 having a substantially rectangular shape when viewed from the front. The main body 31 is provided with a substantially identical cushion portion 32 detachably attached to the front end portion, and supports the back of the seated person via the cushion portion 32.

  The support portion 37 is provided with an armrest portion 38 rotatably below the main body portion 31. By this rotation, the armrest portion 38 can be switched between a holding state in which the armrest portion 38 protrudes forward from the column portion 37 and can hold the seated person's elbow, and a standby state in which the armrest is raised upward.

  The attachment portion 33 is provided so as to protrude forward from the lower portion of the column portion 37. For example, the attachment portion 33 is formed by bending the lower end of the pipe forward. The attachment portion 33 is attached to the lower end portion of the upper portion 13.

  Further, the back side support portion 30 is provided with a gripping hole 34 so that a hand can be inserted when the bathroom chair 1 is carried. The grip hole 34 is provided through the main body 31 and the cushion part 32. The back side support part 30 may be, for example, a so-called waist placing part that supports the waist, and the back side support part 30 may be provided extending from the rear end of the seat part 10. The gripping hole 34 is not limited to the through-hole penetrating in the front-rear direction D1, but may be a recess opened rearward.

  Thus, as shown in FIGS. 1 and 3 to 6, the bathroom chair 1 is configured such that the leg portion 2 is in an open state and the seat portion 10 (seat surface 10 a) is horizontal, and the seat portion 10 ( It is used by sitting on the seating surface 10a). In the bathroom chair 1, the seat surface 10 a and the back side support portion 30 are provided so as to be rotatable relative to the leg portion 2. Furthermore, the bathroom chair 1 is provided with the leg portion 2 and the folding mechanism portion 6 independently of the seat portion 10 and the back side support portion 30.

  Accordingly, the bathroom chair 1 can make it difficult for the folding mechanism unit 6 (folding operation) to interfere with the rotating mechanism unit 16 (rotating operation). In other words, the bathroom chair 1 makes it difficult for the back-side support portion 30, the seat portion 10, and the rotation mechanism portion 16 to interfere with the leg portion 2 and the folding mechanism portion 6 during the folding operation and the rotation operation. Can do.

  Therefore, the bathroom chair 1 can easily reduce the limitation on the rotation angle associated with the interference, and the seat portion 10 and the back side support portion 30 are rotated relative to the leg portion 2 within a range of 360 °. The orientation of the seated person can be changed by this relative rotation. Accordingly, the bathroom chair 1 can be used by a seated person sitting in the posture of the relative rotation angle of the seat part 10 and the back side support part 30 with respect to the leg part 2. It is possible to make it easier to reduce the burden of the assistant and the assistant when using the bathroom. The range in which the rotation mechanism unit 16 can relatively rotate may be 360 ° or less.

  Furthermore, the bathroom chair 1 can fold the leg portion 2 while suppressing interference with the seat portion 10 and the rotation mechanism portion 16. As a result, the bathroom chair 1 can be folded in the legs 2 when not in use to make it compact compared to the open leg state, and can easily reduce the exclusive area in a narrow bathroom when not in use. The utility value can be easily improved.

  In addition, the bathroom chair 1 is provided with the position defining portion 24 in the rotation mechanism portion 16, so that it is difficult to cause unintended relative rotation of the seat portion 10, and safety can be easily improved. . And the rotation mechanism part 16 makes it easy to perform rotation operation | movement of a rotating body smoothly by using the spherical body 21 for the rotating body of a bearing compared with the case where the roller (column) hold | maintained at the lower surface board 17 is used. be able to. Therefore, the bathroom chair 1 can simplify the configuration of the rotation mechanism portion 16 and the like, and facilitate the smooth rotation of the seat portion 10 with respect to the leg portion 2.

  Further, the bathroom chair 1 is formed by forming the lower portion 14 of the seat portion 10 with an X-shaped pipe 14a and arranging the intersection of the X shapes on the planar rotation center 16a so that the pipe 14a is parallel to the planar view. Compared with the case where it arrange | positions side by side, the intensity | strength with respect to the load of the seat part 10 can be improved easily. Thereby, the chair 1 for bathrooms can suppress the weight increase accompanying strength improvement, makes it easy to support a seated person stably, or a caregiver or user (sitting person) in transportation, movement, etc. It is possible to make it easier to reduce the burden.

  Moreover, the bathroom chair 1 is provided with the rotation limiting device 40 which restrict | limits the switching (folding operation | movement) to the closed leg state of the leg part 2, as shown in FIG.7 and FIG.9,10. The rotation restricting device 40 is a restricting mechanism that prohibits switching between the normal state and the folded state of the leg portion 2 when the seat 11 is not located at a predetermined position with respect to the leg portion 2. The specified position is, for example, a position where the front direction of the seat 11 and the front direction of the leg portion 2 coincide (see FIG. 5).

  The rotation restricting device (restricting mechanism) 40 includes a protrusion (extension tool) 41 attached to the leg portion 2 and a flange portion 43 attached to the seat 11.

  The protrusion 41 is located at the first position (see FIG. 10) when the leg portion 2 is in the normal state, and is located at the second position (see FIG. 2) when the leg portion 2 is in the folded state. That is, the protrusion 41 moves between the first position and the second position in accordance with the relative rotation between the front leg 3 and the rear leg 4.

  As shown in FIGS. 2, 10, and 16, the flange portion 43 is disposed between the first position and the second position so as to inhibit the movement of the protrusion 41 between the first position and the second position. . Further, as shown in FIG. 9, the flange portion 43 has an opening 44 through which the projection 41 is passed at a portion facing the projection 41 when the seat 11 is located at the specified position.

  Specifically, the rotation restricting device 40 includes a flange portion 43 provided on the upper surface plate 18 of the rotation mechanism portion 16 and an extending tool 41 provided on the horizontal portion 4 a of the rear leg 4. In addition, the front-back direction of the extension tool 41 corresponds to the front-back direction D2 of the leg part 2, and the front-back direction of the flange part 43 corresponds to the front-back direction D1 of the seat part 10.

  The flange portion 43 is integrally provided on the outer peripheral edge of the upper surface plate 18 on the opening side. The flange portion 43 has a substantially annular shape that is substantially concentric with the lower end (opening edge) of the upper surface plate 18 and protrudes from the upper surface plate 18 in the radially outward direction. The flange portion 43 is provided with an opening 44 in a part in the circumferential direction, and the opening 44 is formed to open in the radially outward direction and penetrate vertically.

  Furthermore, the openings 44 are provided at two locations of the flange 43, and the two openings 44 are positioned side by side on a straight line that is substantially orthogonal to the front-rear direction D1 in plan view and passes through the rotation center 16a. In other words, the two openings 44 are provided in the flange portion 43 at positions shifted from each other by 180 °.

  The two openings 44 have a shape that is line-symmetric with a straight line passing through the rotation center 16a along the front-rear direction D1. In addition, the opening 44 is located behind the folding mechanism 6 in a plan view in a state where the front and rear directions D1 and D2 of the seat 10 and the leg 2 match each other.

  The extension tool (projection) 41 has a Z-shape when viewed from the front, and is provided on the horizontal portion 4a of the rear leg 4 at the lower end of the Z-shape. And the upper end part of the extension tool 41 has faced the rotation center 16a side (inward diameter direction) of the rotation mechanism part 16, and is located above the flange part 43 in the open leg state.

  This upper end portion of the extending tool 41 is an interference portion 42 that interferes with the rotation of the leg portion 2 by contacting the flange portion 43 when the leg portion 2 (rear leg 4) is rotated. Then, the rotation restricting device 40 restricts the rotation of the leg 2 (inhibits the rotation) by causing the interference unit 42 to interfere with the rotation of the leg 2.

  Further, as shown in FIGS. 13 and 14, the extension tool 41 has a movement range of the interference part 42 accompanying the rotation (when the relative rotational position of the seat part 10 and the leg part 2 in the open leg state is a normal position) A part of the (movement trajectory) is positioned so as to overlap with the opening 44 in plan view (located in the opening 44).

  The normal position is, for example, a position where the direction in which the rear legs 4 are aligned with respect to the front legs 3 (the direction of the legs 2) is substantially parallel to the direction of the seats 10. In other words, the normal position is, for example, a position where the front-rear direction D2 of the leg part 2 and the front-rear direction D1 of the seat part 10 are substantially parallel and the fronts are in the same direction (the above-mentioned specified position). .

  The part of the movement range of the interference part 42 is a range in which at least a part of the interference part 42 is located at substantially the same height as the flange part 43 (hereinafter referred to as an interference range).

  In this embodiment, for example, from the state in which the horizontal portion 4 a is in contact with the horizontal portion 3 a (open leg state) until the interference portion 42 is positioned below the flange portion 43 due to the movement accompanying the rotation of the extension tool 41. It is in range. Therefore, when the bathroom chair 1 is in the normal position, the interference part 42 does not easily contact the flange part 43, and the rotation restricting device 40 does not easily interfere with the rotation of the leg part 2.

  Further, as shown in FIGS. 15 and 16, when the extension tool 41 is in a position other than the normal position (in the case of the non-normal position), the interference range of the interference part 42 is located at a part other than the opening 44 of the planar view flange part 43. Overlapping (not located in opening 44). Therefore, when the bathroom chair 1 is in the non-normal position, the interference part 42 comes into contact with the flange part 43 and the rotation restriction device 40 easily interferes with the rotation of the leg part 2. It is easy to be restricted.

  In other words, when the bathroom chair 1 is in the normal position, the leg portion 2 is pivotable without being substantially restricted by the rotation restricting device 40, and is restricted to the rotation restricting device 40 in the non-normal position. As a result, the leg 2 is not rotatable. Therefore, the bathroom chair 1 can be switched between the closed leg state and the closed leg state when in the normal position, and cannot be switched when in the non-normal position.

  Here, the case where it switches from the open leg state (refer FIGS. 3-6) to the closed leg state (refer FIG. 2) (the leg part 2 is folded) is demonstrated. In this case, the bathroom chair 1 in an open leg state can be switched (folded) at the normal position as described above. Then, the bathroom chair 1 switches the leg 2 from the normal leg open state to the closed leg state by the user holding the rear leg 4 and rotating the lower end side of the rear leg 4 to the front leg 3 side. be able to.

  Furthermore, the case where it switches to an open leg state (refer FIGS. 3-6) for using from a closed leg state (refer FIG. 2) is demonstrated. In this case, the bathroom chair 1 is in a state in which the legs 2 are folded at the normal position as described above. In this state, the bathroom chair 1 touches the horizontal portion 3a against the horizontal portion 4a from a posture in which the lower end of the front leg 3 is floated and the lower end of the rear leg 4 is grounded on a floor (not shown) such as a bathroom washroom. The leg part 2 can be switched to an open leg state by making it contact. At this time, the bathroom chair 1 holds the back-side support part 30 with one hand, puts it in the above-mentioned posture, and presses the seat part 10 and the back-side support part 30 downward from this posture, as described above. You can switch to

  As described above, the bathroom chair 1 includes the rotation restricting device 40, and thus the rotation of the rear leg 4 is restricted in a position other than the normal position, and the leg portion 2 is easily held in the open leg state. can do. Accordingly, the bathroom chair 1 can prevent unintentional switching (folding) of the leg 2 to the closed leg state, and can easily support the seated person stably when sitting or rotating. It is possible to improve the utility value in the bathroom.

  The bathroom chair 1 can be switched to the closed leg state in the normal position, and cannot be switched to the closed leg state in the non-normal position other than the normal position, so that the leg portion 2 can be folded in the normal position. Can do. In other words, the bathroom chair 1 has the front-rear direction D1 of the seat part 10 and the front-rear direction D2 of the leg part 2 arranged substantially in parallel, and the fronts of the seat part 10 and the leg part 2 are aligned in substantially the same direction. In the state (posture), the leg 2 can be closed. Thereby, even if the chair 1 for bathrooms is provided with the rotation mechanism part 16, it can make it easy to prescribe | regulate the gravity center in the case of a closed leg state. Therefore, the bathroom chair 1 can be made to stand on its own by the leg 2 in the closed leg state, and it is not necessary to lean on the wall or the like, and is stored in a state of standing on the leg 2 (in a self-standing state). Can do.

  Furthermore, as described above, the bathroom chair 1 can be easily switched with one hand from the closed leg state to the open leg state. Therefore, the bathroom chair 1 can be easily expanded to the floor surface (switched to the open leg state) during use by facilitating the switching operation to the open leg state with only one hand. Of course, the bathroom chair 1 may switch the leg portion 2 to the open leg state by grasping the front leg 3 and the rear leg 4 and rotating the rear leg 4 relative to the front leg 3. The method is not limited to this.

  The purpose of the chair 1 of the present embodiment described above is to allow the relative rotation in a state where the seat 10 can be used by suppressing the interference between the back support 30 and the like at the time of rotation and the seated person, In addition, an object of the present invention is to provide a bathroom chair that can fold the leg portion 2 by suppressing interference between the rotation mechanism portion 16 and the like and the folding mechanism portion 6.

  In order to achieve this object, the chair 1 </ b> A of the present embodiment includes a seat portion 10, a back side support portion 30 attached to the seat portion 10, and a leg portion 2 that supports the seat portion 10. The seat unit 10 includes a rotation mechanism unit 16 that rotates the seat unit 10 and the back-side support unit 30 relative to the leg unit 2. The leg portion 2 includes a folding mechanism portion 6 that connects the front leg 3 and the rear leg 4 so as to be rotatable and switches between an open leg state and a closed leg state.

  Further, in the chair 1 </ b> A of the present embodiment, the seat portion 10 is partitioned into an upper portion 13 and a lower portion 14 based on the rotation mechanism portion 16. The lower portion 14 includes an X-shaped pipe 14 a that is located at an intersection point at the rotation center of the rotation mechanism portion 16. The leg part 2 supports the seat part 10 with the pipe 14a.

  In addition, the chair 1A of the present embodiment is a rotation that restricts the rotation of the leg portion when the relative rotation position between the seat portion 10 and the leg portion 2 is the non-normal position and releases the restriction of the rotation when the relative position is the normal position. A movement limiting device 40 is further provided.

  In other words, the chair 1A of the present embodiment has the following first feature. In the first feature, the chair 1A includes a seat 11 having a seating surface 10a, a leg portion 2 that supports the seat 11, and a rotation mechanism portion 16. The rotation mechanism unit 16 connects the seat to the leg unit 2 so as to be rotatable about the first rotation axis A1 along the normal direction of the seat surface 10a. The leg 2 includes a first leg (front leg) 3, a second leg (rear leg) 4, and a folding mechanism 6. The folding mechanism unit 6 turns the second leg 4 to the first leg 3 so as to be rotatable around a second rotation axis A2 that intersects the first rotation axis A1 so that the leg 2 has a normal state and a folded state. Link.

  Moreover, the chair 1 of the present embodiment feature selectively has the following second to tenth features. That is, the second to tenth features are arbitrary features.

  In the second feature, in the first feature, the leg portion 2 is fixed to the rotation mechanism portion 16 by one of the first leg 3 and the second leg 4.

  In the third feature, in the first or second feature, the first leg 3 does not intersect the second leg 4 in the folded state.

  In the fourth feature, in the third feature, the folded state is a state in which the angle around the second rotation axis A2 between the first leg 3 and the second leg 4 is smaller than in the normal state.

  In the fifth feature, in the fourth feature, the first leg 3 and the second leg 4 have first ends 3a, 4a and second ends 3b, 4b in the length direction. The first ends 3a and 4a define the foot. The folding mechanism unit 6 is configured to connect the first leg 3 and the second leg 4 at the second ends 3b and 4b.

  According to a sixth feature, in any one of the first to fifth features, the leg portion 2 is configured to be independent by the first leg 3 and the second leg 4 even in the folded state.

  In the seventh feature, in any one of the first to sixth features, the chair 1A further includes a restriction mechanism (rotation restriction device) 40. When the seat 11 is not located at the specified position (normal position) with respect to the leg 2 (when the seat 11 is in the non-normal position), the restriction mechanism 40 switches between the normal state and the folded state of the leg 2. Configured to prohibit.

  In the eighth feature, in the seventh feature, the restriction mechanism 40 includes a protrusion (extension tool) 41 attached to the leg portion 2 and a flange portion 43 attached to the seat 11. The protrusion 41 is located at the first position when the leg portion 2 is in the normal state, and is located at the second position when the leg portion 2 is in the folded state. The flange portion 43 is disposed between the first position and the second position so as to inhibit the movement of the protrusion 41 between the first position and the second position. The flange portion 43 has an opening 44 through which the protrusion 41 passes at a portion facing the protrusion 41 when the seat 11 is located at a specified position (normal position).

  In the ninth feature, in the seventh or eighth feature, the specified position is a position where the front direction of the seat 11 coincides with the front direction of the leg portion 2.

  In the tenth feature, in any one of the first to ninth features, the chair 1A includes a connecting portion (lower portion) 14 that connects the leg portion 2 to the rotating mechanism portion 16. The connecting portion 14 has two support bars that are arranged in a plane parallel to the seating surface 10a and intersect at a position through which the first rotation axis A1 passes.

  According to the chair 1 </ b> A of the present embodiment described above, when the seat portion 10 is rotated by the rotation mechanism portion 16, interference between the back side support portion 30 and the seated person and interference between the rotation mechanism portion 16 and the folding mechanism portion 6. It is possible to easily reduce the limitation on the rotation angle due to the interference.

  Furthermore, the chair 1 of the present embodiment makes it difficult for the rotation mechanism unit 16, the seat unit 10, and the back side support unit 30 to interfere with the operation of the folding mechanism unit 6 when the leg unit 2 is folded (switched to the closed leg state). Or the leg 2 can be easily folded independently of the seat 10 and the back support 30. Thereby, the chair 1A of the present embodiment can seat the seat portion 10 and the back side support portion 30 in each posture of an arbitrary relative rotation angle, and suppress interference with the rotation mechanism portion 16 and the like. The leg part 2 can be folded, and there exists an effect that the utility value in a bathroom can be made easy to improve.

  In addition, the chair 1 of this embodiment is not limited only to the above-mentioned structure, If it is in the range which this invention intends, it is possible to perform an appropriate design change. For example, the bathroom chair 1 is not limited to the case where the front and rear direction D1 of the seat portion 10 and the front and rear direction D2 of the leg portion 2 are substantially parallel and the front is substantially in the same direction. It may be the case where D2 intersects at a predetermined angle or the case where the front sides of each other are shifted by 180 °.

(Embodiment 2)
The chair 1 (1B) of this embodiment is a bathroom chair used in a bathroom. As shown in FIGS. 17 to 27, the chair 1 </ b> B of the present embodiment includes a cushion part 11 that defines a seat having a seating surface 10 a, a leg part 2 that supports the cushion part (seat) 11, and a rotation mechanism part 16. . The chair 1 </ b> B includes a backrest 30 a (back support 30) attached to the seat 11.

  In general, the chair 1B is placed on a horizontal surface when in use. Therefore, in the following description, the upward direction in FIG. 22 is the upward direction of the chair 1B, the downward direction in FIG. 22 is the downward direction of the chair 1B, the left direction in FIG. 22 is the forward direction of the chair 1B, and the right direction in FIG. It is called the backward direction of 1B. 21 is referred to as the left direction of the chair 1B, and the right direction in FIG. 21 is referred to as the right direction of the chair 1B.

  Moreover, the bathroom chair 1B includes a lock device 140 that holds the leg 2 in an open leg state (normal state), as shown in FIG. Note that the front-rear direction of the locking device 140 coincides with the front-rear direction D2 of the leg 2. The bathroom chair 1 </ b> B further includes a release device 57 that releases the holding of the leg 2 by the lock device 140 in accordance with a user operation. The release device 57 is configured not to release the holding of the leg portion 2 by the lock device 140 according to the user's operation unless the seat 11 is located at the specified position (normal position) with respect to the leg portion 2.

  Thus, the chair 1B of the present embodiment is different from the chair 1 (1A) of the first embodiment in that the lock device 140 and the release device 57 are provided instead of the rotation restricting device (restricting mechanism) 40. To do. In addition, the same code | symbol is attached | subjected to the structure common to the chair 1B and the chair 1A, and description is abbreviate | omitted.

  The lock device 140 includes a lock tool 142 and a lock hole 141. The locking device 142 is provided on one of the first leg 3 and the second leg 4. The lock hole 141 is provided on the other of the first leg 3 and the second leg 4 and faces the lock member 142 when the leg 2 is in a normal state. In the present embodiment, the locking device 140 includes a locking tool 142 provided in the horizontal portion 3 a of the front leg 3 and a lock hole 141 provided in the horizontal portion 4 a of the rear leg 4.

  The horizontal portion 4a is provided with a rising portion 147 that rises upward. The rising portion 147 is located on the rear side of the rear end of the horizontal portion 3a in the open leg state. The rising portion 147 has a plate surface facing the rear end of the horizontal portion 3a, and a lock hole 141 is provided on the plate surface. The lock hole 141 is a through-hole penetrating in the front-rear direction or a recess opening forward.

  The locking device 142 includes a lock shaft 143 that fits into the lock hole 141, a case 144 that houses the lock shaft 143, a holding portion (holding mechanism) 145 that causes the rear end of the lock shaft 143 to protrude rearward of the case 144, and a holding And a release tool 146 for releasing the holding of the portion 145.

  The case 144 has a cylindrical shape that opens rearward and closes the front end, and accommodates the lock shaft 143 and the holding portion 145 in the cylinder. Note that the case 144 is not essential.

  The holding portion 45 is disposed in front of the lock shaft 143 in the case 144. And the holding | maintenance part 145 is formed with elastic bodies, such as a spring which urges | biases the lock shaft 143 back, for example.

  The lock shaft 143 is cylindrical, and is held in a state where the rear end protrudes rearward of the case 144 by the urging of the holding portion 145. The held lock shaft 143 is fitted into the lock hole 141 when the leg portion 2 is in the open leg state. Thereby, the locking device 140 locks the leg 2 in the open leg state.

  That is, the lock shaft 143 is disposed so as to be freely movable between a first position where the lock tool 142 is opposed to the lock hole 141 and a second position where the lock tool 142 is not fit into the lock hole 141. . The holding mechanism 145 is configured to hold the lock shaft 143 in the first position.

  The release tool 146 has a rod shape, and a first end portion of the rod protrudes above the case 144 and a second end portion is attached to the lock shaft 143 via a connecting portion 146a. The release tool 146 is pivotable back and forth with the connecting portion 146a as a fulcrum. That is, the release tool 146 is movably disposed between the third position (position shown in FIG. 28) and the fourth position. The third position is the initial position of the release tool 146. The third position is a position where the release tool 146 does not release the holding of the lock shaft 143 by the holding portion 145. The fourth position is a position where the release tool 146 releases the holding of the lock shaft 143 by the holding portion 145.

  Further, the release tool 146 moves the lock shaft 143 forward via the connecting portion 146a by rotating the portion (first end portion side) protruding upward to hold the holding portion 145. To release. That is, the release tool 146 is configured to release the holding of the lock shaft 143 by the holding mechanism 145 and move the lock shaft 143 to the second position when it is located at the fourth position.

  In other words, the release tool 146 moves from the third position to the fourth position, thereby moving the lock shaft 143 forward against the urging force of the holding portion 145 and immersing it in the case 144. Then, the lock device 140 moves the lock shaft 143 forward from the state in which the lock shaft 143 is fitted in the lock hole 141, so that the lock shaft 143 comes out of the lock hole 141, and the lock is released.

  Further, the upper portion 13 of the seat body 12 is provided with a base 13a at the lower end portion, and the base 13a is provided with an operation tool 50 that causes the release tool 146 to perform the release operation (backward turning operation). Note that the front-rear direction of the operating tool 50 coincides with the front-rear direction D1 of the seat portion 10.

  The upper end of the operating tool 50 is attached to the base 13a via a pivot shaft 50a, and the lower end side rotates back and forth with the pivot shaft 50a as a fulcrum. In other words, the operating tool 50 is disposed so as to be movable between the fifth position and the sixth position. The operating tool 50 is rotated by moving to the front side, so that the lower end side is positioned at a standby position (fifth position) located above the release tool 146 and is further released from the standby position by rotating backward. It is located at the operating position (sixth position) where it can contact the tool 146.

  When the release tool 146 is positioned in the rotatable state within the rotation range that becomes the operation position when the operation tool 50 is rotated from the front to the rear, the release tool 146 has the holding portion 145 attached to the release tool 146. Release the hold. In other words, the bathroom chair 1 </ b> B can be unlocked by the lock device 140 via the operation tool 50.

  That is, the operation tool 50 and the release tool 146 constitute the coupling mechanism 60 when the seat 11 is located at the specified position (normal position) as shown in FIG. The coupling mechanism 60 is configured such that the release tool 146 moves from the third position to the fourth position in accordance with the movement of the operation tool 50 from the fifth position to the sixth position.

  Furthermore, as shown in FIGS. 31 and 32, the bathroom chair 1 </ b> B is within the rotation range of the operation tool 50 when the relative rotation position between the seat portion 10 and the leg portion 2 in the open leg state is the normal position. The release tool 146 is positioned in a state in which it can pivot backward.

  The normal position is, for example, a position where the direction in which the rear legs 4 are aligned with respect to the front legs 3 (the direction of the leg portions 2) is substantially the same direction of the seat portion 10. In other words, the normal position is, for example, a position where the front-rear direction D2 of the leg part 2 and the front-rear direction D1 of the seat part 10 are substantially parallel and the fronts are in the same direction. As shown in FIGS. 33 and 34, the bathroom chair 1 </ b> B is released when the release tool 146 is located outside the rotation range of the operating tool 50 when it is other than the normal position (in the non-normal position). 146 is not rotated by the operating tool 50. That is, when the seat 11 is not located at the specified position (normal position), the operating tool 50 and the release tool 146 do not constitute the coupling mechanism 60.

  Moreover, the chair 1B for bathrooms is further provided with the cancellation | release operation tool (manual operation part) 53 which cancels | releases the locking device 140, as shown to FIGS. Note that the front-rear direction of the release operation tool 53 coincides with the front-rear direction D1 of the seat portion 10.

  The release operation tool 53 is attached to the back side of the back side support part 30 via the attachment tool 54. That is, the manual operation part 53 is arrange | positioned at the backrest part 30a. The fixture 54 is provided at the lower end edge of the grip hole 34 directly below the overhanging portion 35. The release operation tool 53 is pivotally supported by the mounting tool 54 at the first end, and the second end is rotatable up and down with the mounting tool 54 as a fulcrum. The release operation tool 53 is provided with a stopper piece 55, a standby posture in which the first end side protrudes rearward and the stopper piece 55 abuts on the fixture 54, and an operation posture in which the stopper piece 55 is lifted obliquely upward from the standby posture. Is switched by the rotation.

  A release wire (transmission mechanism) 56 is attached between the lock tool 142 (operation tool 50) and the release operation tool 53 as shown in FIGS. The release wire 56 is formed by inserting a wire into a flexible tube.

  The first end of the release wire 56 is connected and fixed to a wire connecting portion (not shown) of the operating tool 50. Further, the release wire 56 has its second end led out to the back side of the back side support portion 30, for example, by passing it through the column portion 37, and this second end is connected and fixed to the release operation tool 53. is there. Therefore, the bathroom chair 1 </ b> B rotates the operating tool 50 backward via the release wire 56 by externally operating the release operating tool 53 from the standby position to the operating position. That is, the transmission mechanism 56 is configured to move the operating tool 50 from the fifth position (standby position) to the sixth position (operating position) in accordance with the operation of the manual operation unit 53 by the user.

  In the present embodiment, the operating device 50, the manual operation unit (release operation tool) 53, and the transmission mechanism (release wire) 56 constitute a release device 57.

  Further, as shown in FIGS. 27, 28, and 31 to 34, the leg portion 2 has a biasing portion 7 such as a coil spring attached between the front leg 3 and the rear leg 4. The urging unit 7 urges the front leg 3 and the rear leg 4 toward the closed leg state via the front hinge 6a and the rear hinge 6b. Therefore, when the lock of the locking device 140 is released, the leg 2 is biased by the biasing part 7 so as to close the front leg 3 and the rear leg 4 with the pivotal part 6c as the center. It turns in the direction to make it a closed leg state.

  Here, the case where it switches from the open leg state (refer FIGS. 20-23) to a closed leg state (refer FIG. 18, 19) (the leg part 2 is folded) is demonstrated. In this case, the bathroom chair 1 </ b> B in the open leg state extracts the lock tool 142 of the lock device 140 from the lock hole 141 and releases the lock. The lock can be released by operating the release operation tool 53 at the normal position.

  Specifically, in the bathroom chair 1B, the release wire 56 (second end of the release wire 56) connected to the release operation tool 53 is pulled by rotating the release operation tool 53 upward. When the release wire 56 is pulled (pulled) in the bathroom chair 1 </ b> B, the operating tool 50 rotates backward via the first end of the release wire 56.

  When the bathroom chair 1B is in the normal position, the release tool 146 is positioned in a rotatable range within the rotation range of the operation tool 50. Therefore, the release tool 146 is pushed rearward by being pushed by the rotating operation tool 50. Rotate towards. The bathroom chair 1 </ b> B is rotated by the release tool 146 to move the lock shaft 143 forward to be extracted from the lock hole 141, and the lock of the lock device 140 is released.

  In addition, when the bathroom chair 1B is in the non-normal position, the release tool 146 does not rotate in the pivotable range of the operation tool 50 in a state in which the release tool 146 can rotate. Is not released.

  Next, a case where the leg is switched from the closed leg state (see FIGS. 18 and 19) to the open leg state (see FIGS. 20 to 23) for use will be described. In this case, the bathroom chair 1B is in a normal position and the leg 2 is folded.

  In this state, the bathroom chair 1B presses the overhanging portion 35 downward from a posture in which the lower end of the front leg 3 is floated and the lower end of the rear leg 4 is grounded on a floor surface (not shown) of a bathroom washroom or the like. The leg portion 2 can be switched to the open leg state by bringing the horizontal portion 3a into contact with the horizontal portion 4a.

  At this time, the bathroom chair 1B holds the back-side support part 30 and the overhanging part 35 with one hand, puts it in the above-mentioned posture, and presses the overhanging part 35 downward with the one hand from this posture. You can switch to the state. Therefore, the bathroom chair 1B can be easily switched to an open leg state with only one hand. Of course, the bathroom chair 1B may switch the leg portion 2 to the open leg state by grasping the front leg 3 and the rear leg 4 and rotating the rear leg 4 relative to the front leg 3. The method is not limited to this.

  Thus, the bathroom chair 1 </ b> B includes the lock device 140, so that the leg 2 can be easily held in the open leg state. Accordingly, the bathroom chair 1B can prevent unintentional switching (folding) of the leg 2 to the closed leg state, and can easily support the seated person stably when sitting or rotating. be able to.

  The bathroom chair 1 </ b> B can prevent the lock device 140 from interfering with the rotation operation of the rotation mechanism unit 16 by providing the lock device 140 on the leg 2. Thereby, even if the chair 1B for bathrooms is provided with the locking device 140, the leg portion 2 can be folded and the seat portion 10 and the back side support portion 30 can be rotated by 360 ° relative to each other. .

  Therefore, the bathroom chair 1 can seat the seat portion 10 or the like in any posture of an arbitrary relative rotation angle, and can fold the leg portion 2 while suppressing interference with the rotation mechanism portion 16 or the like. It is possible to easily improve the utility value in the bathroom. The range in which the rotation mechanism unit 16 can relatively rotate may be 360 ° or less.

  Further, the bathroom chair 1B is provided with the urging portion 7 that urges toward the closed leg state, so that the front leg 3 and the rear leg 4 are automatically moved by the urging force of the urging portion 7 when the lock is released. Can be easily rotated. In other words, the bathroom chair 1B can be easily switched to the closed leg state when the lock is released, and can be easily folded.

  In addition, the bathroom chair 1 </ b> B can release the lock of the lock device 140 from the side of the seat 10 by providing the operation tool 50 on the upper portion 13 of the seat 10.

  Then, the bathroom chair 1B is provided with a release operation tool 53 for remotely transmitting and operating the rotation of the operation tool 50 (external operation), so that the lock can be released from a position away from the operation tool 50. Can be done. Furthermore, the bathroom chair 1B is provided with a release operation tool 53 on a member located at the highest position of the chair, that is, the back side support portion 30, so that it does not need to bend and remains in an easy standing posture. The release operation tool 53 can be easily operated.

  Therefore, the bathroom chair 1B performs the unlocking operation of the lock device 140 by, for example, rotating the release operation tool 53 by lowering the arm while standing and hooking the release operation piece 28a on the finger. Can be made easier.

  The bathroom chair 1 </ b> B increases the distance between the release operation tool 53 and the lock device 140 by providing the release wire 56 between the lock device 140 (the operation tool 50) and the release operation tool 53. Even in this case, the lock device 140 can be remotely operated by a simple mechanism called the release wire 56.

  Furthermore, the bathroom chair 1B is provided with the overhanging portion 35 at the upper edge of the holding hole 34 directly above the release operation tool 53, so that both the overhang portion 35 and the release operation tool 53 can be easily grasped with one hand. . Therefore, for example, the bathroom chair 1B holds the one hand by holding the index finger or the middle finger of the same hand on the lower side of the release operation tool 53 with the thumb of one hand placed on the overhanging portion 35. By doing so, an operation of pulling up the release operation tool 53 can be performed. Accordingly, the bathroom chair 1B can be unlocked by an operation with only one hand, and can easily apply a force to the release operation tool 53 during this operation.

  The bathroom chair 1B facilitates the operation of the release operation tool 53 with one hand and automatically folds the leg 2 so that the bathroom chair 1B can be folded with only one hand. It becomes possible. Accordingly, the bathroom chair 1B can be easily folded. Furthermore, the bathroom chair 1B can be easily expanded to the floor surface (switched to the open leg state) during use by facilitating the switching operation to the open leg state with only one hand.

  In addition, the bathroom chair 1B allows the lock device 140 to be unlocked in the normal position via the operation tool 50, and in the non-normal position other than the normal position, the lock cannot be released. The leg 2 can be folded at the normal position. In other words, the bathroom chair 1B has the front-rear direction D1 of the seat part 10 and the front-rear direction D2 of the leg part 2 aligned substantially in parallel, and the fronts of the seat part 10 and the leg part 2 are aligned in substantially the same direction. In the state (posture), the leg 2 can be closed.

  Accordingly, the bathroom chair 1B can easily define the center of gravity in the closed leg state even when the bathroom mechanism 1B includes the rotation mechanism unit 16. Therefore, the bathroom chair 1B can be made to stand on its own by the leg 2 in the closed leg state, and can be stored in a state of standing up on the leg 2 (in a self-standing state) without having to lean on the wall or the like. Can do.

  The bathroom chair as described in Documents 1 and 2 can be switched to the closed leg state by folding the leg part, and the seat part and the backrest part can be rotated with respect to the leg part. The center of gravity tends to change according to the rotation angle of the seat or the like. Therefore, the conventional bathroom chair has a new problem that it is difficult to be self-supported in the closed leg state.

  The purpose of the chair 1 (1B) of the present embodiment is to enable the relative rotation in a state where the seat 10 can be used by suppressing the interference between the back support 30 and the like at the time of rotation and the seated person, In addition, the interference between the rotation mechanism portion 16 and the like and the folding mechanism portion 6 is suppressed, and the leg portion 2 can be switched to a closed leg state in which it can stand on its own.

  In order to achieve this object, the bathroom chair 1B of the present embodiment includes a front leg 3 and a rear leg 4, and the leg 2 that can be switched between an open leg state and a closed leg state. The seat 10 supported by the leg 2 and rotatable relative to the leg 2, the back-side support 30 attached to the seat 10 and rotating relative to the seat 10, and the leg 2 in the open leg state A lock device 140 for locking and a release operation tool 53 for unlocking the lock device 140 are provided. The release operation tool 53 can release the lock of the lock device 140 when the relative rotational position between the seat 10 and the leg 2 is the normal position, and cannot be released when the relative rotation position is the non-normal position.

  Moreover, in the bathroom chair 1 </ b> B of the present embodiment, the release operation tool 53 is provided on the back side support part 30. The chair 1 </ b> B includes a release wire 56 that remotely transmits an external operation of the release operation tool 53, and an operation tool 50 that is provided on the seat 10 and rotates in the front-rear direction of the seat 10 by an external operation from the release wire 56. . The lock device 140 includes a lock member 142 provided on one of the front leg 3 and the rear leg 4, and a lock hole 141 provided on the remaining one of the front leg 3 and the rear leg 4 to fit the lock member 142. Prepare. The lock tool 142 is slidable in the front-rear direction of the leg part 2 and fits into the lock hole 141; the holding part 145 that restricts sliding and holds the lock shaft 143 fitted; and the action tool 50 And a release tool 146 for releasing the holding of the holding portion 145. When the locking device 140 is in the normal position, the locking device 140 is positioned within the rotation range of the operating tool 50 in a state in which the release tool 146 can be released from the holding state. It is located in a state where it cannot be released or is located outside the rotation range.

  The chair 1B of the present embodiment described above has the following 11th to 13th features in addition to the 1st to 6th features. The second to sixth, twelfth and thirteenth features are arbitrary features.

  In the eleventh feature, the chair 1B further includes a locking device 140 that holds the leg 2 in a normal state, and a release device 57 that releases the holding of the leg 2 by the locking device 140 in accordance with a user operation. . The release device 57 is configured not to release the holding of the leg portion 2 by the lock device 140 according to the user's operation unless the seat 11 is located at the specified position (normal position) with respect to the leg portion 2.

  According to a twelfth feature, in the eleventh feature, the chair 1B includes a backrest portion 30a (back side support portion 30) attached to the seat 11.

  According to a thirteenth feature, in the twelfth feature, the lock device 140 includes a lock tool 142 and a lock hole 141. The locking device 142 is provided on one of the first leg 3 and the second leg 4. The lock hole 141 is provided on the other of the first leg 3 and the second leg 4 and faces the lock member 142 when the leg 2 is in a normal state. The lock tool 142 includes a lock shaft 143, a holding mechanism (holding unit) 145, and a release tool 146. The lock shaft 143 is disposed so as to be movable between a first position where the lock member 142 faces the lock hole 141 and a second position where the lock shaft 142 does not fit the lock hole 141. The holding mechanism 145 is configured to hold the lock shaft 143 in the first position. The release tool 146 is movably disposed between the third position and the fourth position. When the release tool 146 is positioned at the fourth position, the release tool 146 is configured to release the holding of the lock shaft 143 by the holding mechanism 145 and move the lock shaft 143 to the second position. The release device 57 includes an operation tool 50, a manual operation unit (release operation tool) 53, and a transmission mechanism (release wire) 56. The operating tool 50 is disposed so as to be movable between the fifth position and the sixth position. The manual operation unit 53 is disposed on the backrest 30a. The transmission mechanism 56 is configured to move the operating tool 50 from the fifth position to the sixth position in accordance with the operation of the manual operation unit 53 by the user. The operation tool 50 and the release tool 146 constitute the coupling mechanism 60 when the seat 11 is located at the specified position. The coupling mechanism 60 is configured such that the release tool 146 moves from the third position to the fourth position in accordance with the movement of the operation tool 50 from the fifth position to the sixth position.

  According to the chair 1 of the present embodiment described above, since the structure is provided, when the seat portion 10 is rotated by the rotation mechanism portion 16, interference between the back side support portion 30 and the seated person and the rotation mechanism portion 16 It is possible to make it difficult for interference with the folding mechanism section 6 to occur, and to easily reduce the limitation on the rotation angle associated with the interference.

  And according to the chair 1B of this embodiment, when the leg part 2 is folded (switching to the closed leg state), the rotation mechanism part 16, the seat part 10, and the back side support part 30 interfere with the operation of the folding mechanism part 6. It can be made difficult, or the leg portion 2 can be easily folded independently of the seat portion 10 and the back side support portion 30. Thereby, the chair 1B of the present embodiment can seat the seat portion 10 and the back side support portion 30 in each posture of an arbitrary relative rotation angle, and suppress interference with the rotation mechanism portion 16 and the like. The leg part 2 can be folded, and there exists an effect that the utility value in a bathroom can be made easy to improve.

  Further, in the chair 1B of the present embodiment, the closed leg state can be defined as the posture of the normal position by switching to the closed leg state at the normal position and not switching at the non-normal position. Accordingly, the chair 1B of the present embodiment can easily define the center of gravity in the closed leg state, and has an effect of being able to be easily made independent in the closed leg state.

1 Chair 2 Leg 3 First leg (front leg)
4 Second leg (rear leg)
6 Folding mechanism part 10a Seat surface 11 Seat 16 Rotating mechanism part A1 1st rotating shaft A2 2nd rotating shaft

Claims (7)

A seat having a seating surface;
Attached to the seat, a rear-side supporting portions you support the seated person from the rear side,
Legs supporting the seat;
With
The seat is
A main body having the seating surface and to which the back side support is integrally attached;
A connecting portion disposed in a plane parallel to the seating surface and having the leg portion connected to a lower end portion;
A rotation mechanism portion that rotatably said body portion about a first rotary shaft connected to the connecting portion along the arranged normal to the direction of the seat surface between the body portion and the connection portion,
With
The legs are
The parallel beauty in a direction parallel to the direction of the second rotation axis orthogonal to the first rotation axis, a pair of front legs which top is extended toward the rear,
Parallel beauty in a direction parallel to the direction of the second rotary shaft, and a pair of upper is extended toward the front rear leg,
A folding mechanism for connecting the upper parts of the pair of rear legs to the upper parts of the pair of front legs so as to be rotatable around the second rotation shaft so that the leg parts have a normal state and a folded state;
With
The said leg part is fixed to the lower end part of the said connection part in any one of the upper part of the said pair of front legs , and the upper part of the said pair of rear legs. The bathroom chair characterized by the above-mentioned. The leg portion has an open leg state that opens in a U-shape downward in a side view as the normal state,
The folding mechanism includes a pivotal support that connects the pair of front legs and the pair of rear legs,
The pivot portion has a bottom line that is a line connecting the pair of front legs and the lower ends of the pair of rear legs so that the pair of front legs and the pair of rear legs stand independently even when the legs are in the folded state. The bathroom chair according to claim 1, wherein the bathroom chair is located at a vertex of an equilateral triangle . The connecting portion is disposed in a plane parallel to the bearing surface, bath chair according to claim 1 or 2, characterized in that it has two support bars intersect at a position where the first rotary shaft passes . With a limiting mechanism,
The restriction mechanism is configured to prohibit switching between the normal state and the folded state of the leg when the seat is not located at a predetermined position with respect to the leg.
The specified position is a position where the front direction of the seat and the front direction of the front leg coincide.
The bathroom chair according to any one of claims 1 to 3 . The limiting mechanism is
A protrusion attached to the leg,
A flange portion attached to the seat;
With
The protrusion is located in a first position when the leg is in the normal state, and is located in a second position when the leg is in the folded state;
The flange portion is disposed between the first position and the second position so as to inhibit movement of the protrusion between the first position and the second position;
5. The bathroom chair according to claim 4, wherein the flange portion has an opening through which the protrusion passes at a portion facing the protrusion when the seat is located at the predetermined position . 6. A locking device;
A release device for releasing the holding of the leg by the lock device in response to a user operation;
With
The locking device is configured to hold the leg in the normal state;
The release device is configured not to release the holding of the leg by the lock device according to a user operation unless the seat is located at a predetermined position with respect to the leg.
The bathroom chair according to any one of claims 1 to 3, wherein the specified position is a position where a front direction of the seat and a front direction of the front leg coincide with each other . The locking device is
A lock provided on one of the pair of front legs and the pair of rear legs;
A lock hole provided on the other of the pair of front legs and the pair of rear legs, and facing the lock when the leg is in the normal state;
With
The locking device is
A lock shaft that is movable between a third position that fits into the lock hole and a fourth position that does not fit into the lock hole when the locking tool faces the lock hole;
A holding mechanism for holding the lock shaft in the third position;
A release tool,
With
The release tool is movable between a fifth position where the release tool does not release the holding of the lock shaft by the holding mechanism and a sixth position where the release tool releases the holding of the lock shaft by the holding mechanism. Disposed in the sixth position, and is configured to release the holding of the lock shaft by the holding mechanism and move the lock shaft to the fourth position,
The release device is
An operation tool that is movably disposed between a seventh position that is not capable of contacting the release tool and an eighth position that is capable of contacting the release tool;
A manual operation unit disposed on the back side support unit;
A transmission mechanism for moving the operating tool from the seventh position to the eighth position in response to an operation of the manual operation unit by a user;
With
The operating tool and the release tool constitute a coupling mechanism when the seat is located at the specified position,
The coupling mechanism is configured to move the release tool from the fifth position to the sixth position in accordance with the movement of the operating tool from the seventh position to the eighth position. The bathroom chair according to claim 6 .

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