JP2020092797A - Chair for bathroom - Google Patents

Abstract

To provide a chair for a bathroom equipped with lock means for holding a seat part substantially in a parallel state, in which the seat part can be brought into a folded state by operating lock release means by a single touch.SOLUTION: A chair for a bathroom includes a leg frame with a leg part, a backrest part 5 attached to the leg frame, and a seat part attached to the leg frame rotatably between an expanded state and a folded state. The seat is provided with lock means for causing the seat part to engage with the leg frame and holding the expanded state. The backrest part is provided with lock release means 9 for releasing the engagement of the seat part and the leg frame by the lock means. A folding lever 90 of the lock release means is arranged so that its upper end part is substantially flush with an upper end part of the backrest part.SELECTED DRAWING: Figure 12

Description

The present invention relates to a foldable bathroom chair used in a bathroom, and in particular, a folding lever of a lock releasing means provided so as to be substantially flush with an upper end portion of a backrest is pulled upward or downward. The present invention relates to a bathroom chair that can be folded and unfolded by pushing it in with one-touch operation.

Conventionally, it is difficult for the elderly, care recipient, and physically handicapped to wash their bodies in a standing posture and take a shower when taking a bath, so a seat on which the user sits, Bathroom chairs having a backrest for supporting the back and legs for supporting these parts are used. When not in use, the bathroom chair occupies a space in a small bathroom and becomes an obstacle, so in recent years, when the legs are closed, the seat can be folded upward to make it compact. Is being developed.

For example, Japanese Unexamined Patent Application Publication No. 2008-295753 (Patent Document 1) discloses a seat portion connected to a leg portion, and an engagement means for holding the position of the seat portion in a horizontal state by opening the leg portion. A disengagement means for disengaging the seat portion, the disengagement means disengages the seat portion, and the leg portion is closed to fold the seat portion upward. A folding chair capable of performing is disclosed.

However, in the folding chair described in Patent Document 1, the handle and the grip bar for releasing the engagement of the seat portion in the horizontal state are arranged at the rear end of the seat portion below the backrest portion. In order to disengage the seat from the front side of the folding chair and fold the chair, the user must operate with the hands fully inserted into the rear end of the seat while leaning deeply. There is a problem that the chair cannot be easily folded by releasing the engagement of the seat, especially for the elderly who have physical disabilities, the care recipient, and the physically handicapped.

Further, in Japanese Patent Laid-Open No. 2011-67448 (Patent Document 2), as in Patent Document 1, the leg portion and the seat portion are connected to each other, and the leg portion is opened to make the seat portion horizontal. A lock device for holding the position and a release tool for releasing the lock of the seat part are provided, and the seat part is unlocked by the release tool, and the seat part is folded upward by closing the legs. A bathroom chair that can be used is disclosed.

Further, in the bathroom chair described in Patent Document 2, the unlocking tool and the lever piece for unlocking the seat in the horizontal state are not provided on the backrest itself, but from the upper end of the backrest. Is also provided at the lower position on the front leg frame that supports the backrest from the back side (paragraph 0045 of Patent Document 2, FIG. 9B).

For this reason, in order to unlock the seat portion, for example, with the thumb of one hand on the overhanging portion provided on the upper end of the backrest, the index finger or middle finger of the same hand of the lever piece is used. It is necessary to release the lock by hooking it on the lower side and strongly "grasping" one hand (paragraph 0045 of Patent Document 2), and for elderly people who do not have grip strength, care recipients, people with physical disabilities, etc. However, there was a problem that the seat chair could not be unlocked by itself and the bathroom chair could be folded. In addition, it is difficult for the elderly, who have a narrow range of motion such as wrists, to operate the lever piece by reaching from the front of the bathroom chair to the position below the back of the backrest. Therefore, there is also a problem that it is not easy to fold it from the front of the chair.

Further, since the lever piece of the release tool described in Patent Document 2 is rotatably attached, it is suitable for an operation such that a thumb or the like is hung on the upper end of the backrest and the lever piece is gripped. However, it is not suitable for the operation of pulling up the lever piece because the angle of the lever piece on which the finger is hooked changes. For this reason, when carrying a folded bathroom chair by operating the lever piece, the lever piece is placed behind the backrest part, and the hand that operated the lever piece is not the lever piece. There is another problem that it has to be replaced with a grip hole provided on the upper part of the backrest. Further, there is a problem that it is difficult to lean the back surface of the backrest portion against the wall without a gap when the lever piece is held.

Japanese Patent Laid-Open No. 2011-250897 (Patent Document 3) describes movement of a backrest portion with respect to a leg portion at a position of a seat portion that is attached so as to rotate by lifting a backrest portion and a substantially horizontal seat portion. Equipped with a lock mechanism to control and a lock release button to release the restriction of movement of the backrest, and by lifting the lock release button from below and lifting it upward, the movement of the backrest relative to the legs is released. There is disclosed a folding chair in which the seat rotates in conjunction with the movement of the backrest so that the seat can be folded in a substantially planar manner.

However, in the folding chair described in Patent Document 3, the lock release button for releasing the regulation of the movement of the backrest portion with respect to the leg portion at the position of the substantially horizontal seat portion has the lower end portion of the backrest portion at the rear end of the seat portion. Therefore, in order to fold the chair "from the front" of the folding chair by releasing the restriction on the movement of the backrest, the user bends deeply like the folding chair described in Patent Document 1. There is a problem that you have to insert your hand up to the lower end of the backrest located at the rear end of the seat in an uncomfortable position, especially for the physically handicapped elderly, care recipient, and physically handicapped. Had a problem that the chair cannot be easily folded by releasing the restriction on the movement of the backrest.

Further, since the lock release button described in Patent Document 3 is arranged at the lower end of the backrest, unless the lock release button is provided with a handle opening or a handle, the user can There is a problem that the folding chair is folded even if the user does not intend to operate the lock release button by mistake when carrying the vehicle (paragraph 0056 of Patent Document 3).

JP, 2008-295753, A JP, 2011-67448, A JP, 2011-250897, A

Therefore, the present invention is provided with a lock means for connecting the leg portion and the seat portion, for holding the deployed seat portion in a substantially horizontal state, and a lock release means for unlocking the seat portion. To provide a bathroom chair in which the seat portion can be rotated between a substantially horizontal unfolded state and a substantially vertical folded state by operating the folding lever of the unlocking means with one touch. With the goal.

The present inventors have found that the leg portion and the seat portion are connected to each other, and the lock portion holds the position of the seat portion in a horizontal state by opening the leg portion, and the lock releasing means unlocks the seat portion. However, in a bathroom chair in which the legs can be closed by folding the seat upward, as a result of extensive studies on the shape, operating method, attachment position, etc. of the folding lever of the unlocking means, the folding lever was lifted. The inventors have found that the above problems can be solved by arranging them so as to be incorporated in the upper end portion of the section and devising the shape and operating method thereof, and have completed the present invention.

That is, according to the present invention, a leg frame having a pair of left and right legs, a backrest attached to the leg frame, and a leg frame that is rotatable between a substantially horizontal deployed state and a substantially vertical folded state. In the bathroom chair consisting of the seat attached to the seat, the seat is provided with a locking means for engaging the seat with the leg frame and holding the seat in a substantially horizontal deployed state, and the seat back has a Is provided with lock releasing means for releasing the engagement between the seat portion and the leg frame by the lock means, and the lock releasing means has a folding lever for holding a hand, and the folding means There is provided a bathroom chair, wherein the lever is arranged such that its upper end is substantially flush with the upper end of the backrest. In addition, when the bathroom chair is folded and made to stand on a horizontal surface, the upper end of the backrest and the upper end of the folding lever are inclined so that the height rises from the front side of the backrest toward the back side. Is preferred.

Generally, in a folding chair, if a movable part such as a lever is provided at the upper end part of the backrest, the movable part projects to the back side at the upper end part of the backrest, and therefore the folded chair is brought into close contact with a wall to be compact. This causes the inconvenience that it cannot be accommodated. Also, if the unlocking means or its operating lever is directly attached to the backrest part, it will be separated from the frame member such as the leg part that is suitable for passing the operation transmitting means such as wires, so that the movement of the lever to the locking means. There is a problem that it is difficult to clean up the appearance without impairing the function of the operation transmitting means for transmitting.

According to the present invention, a recess is provided on the back surface of the backrest, and the folding lever of the unlocking means is attached to the backside of the backrest so that the folding lever can be slid vertically in the recess. We solved the above problem by finding that we can prevent it. That is, in the bathroom chair of the present invention, the folding lever does not project to the back side of the backrest even when it abuts against a vertical wall surface in the open state where the seat is substantially horizontally deployed, and the vertical direction Since it is slidable, the user can easily operate by inserting his/her fingers through the gap formed between the folding lever and the wall surface.

As for the operation transmission means for transmitting the movement of the folding lever to the locking means, the folding lever is attached so as to be slidable in the vertical direction along the back surface of the backrest portion, and further by combining the wire and lever means, the backrest portion is combined. The inventors have found that the vertical linear movement of the folding lever in the recess on the back surface of the lever can be converted into the rotational movement of the lever means in the substantially horizontal direction, and solved the above problems.

In the present invention, "substantially flush" means a state in which there is almost no step between the upper end surface of the folding lever and the upper end surface of the backrest portion, and in a strict sense, a state in which there is no step. It does not mean. In the present invention, the upper end portion of the folding lever and/or the upper end portion of the backrest portion is a region used by the user to push down the folding chair with the palm, for example, to open the bathroom chair in the folded state. .. For this reason, "substantially flush" means that the surface of the upper end of the folding lever does not feel a step even if the user presses the upper end of the folding lever and the upper end of the backrest at the same time with the palm. It suffices that the upper surface of the backrest portion and the surface of the upper portion are continuously formed.

In the bathroom chair of the present invention, the folding lever is preferably attached so as to be vertically slidable along the back surface of the backrest, and the upper end of the folding lever is located above the upper end of the backrest. More preferably, it is slidable only in the area.

Further, the lock releasing means is composed of a slide restriction slot provided on the folding lever and a slide restriction projection provided on the cover, which is inserted into the slide restriction slot, for restricting the sliding amount of the folding lever. It is preferable to provide a slide restricting means, and the slide restricting protrusion may be provided on the back surface of the backrest portion. Further, the slide restricting means may be provided with a slide restricting elongated hole on the back surface of the cover or the backrest portion and a slide restricting protrusion on the folding lever. According to the present invention, by providing the slide release means in the unlocking means, after the folding lever is pulled up to the slide limit, the bathroom chair 1 can be continuously lifted and carried without releasing the pulling hand. ..

Further, in the present invention, the leg frame includes a front leg frame and a rear leg frame, the front leg frame and the rear leg frame are rotatably attached to each other, and the front leg frame and the rear leg frame are mutually attached. The movement to open and close between the spaced apart open leg state and the close to each other closed leg state may be interlocked with the movement to rotate the seat between a substantially horizontal deployed state and a substantially vertical folded state. preferable.

In the present invention, when the folding lever is pulled upward, the engagement between the seat portion and the leg frame by the locking means is released, so that the seat chair is seated in the open state with the seat portion substantially deployed. It is also used to put the bathroom chair in the closed state into the open state by pushing it downward while the section is folded in a substantially vertical state. For this reason, the upper end of the folding lever slides above the upper end of the backrest, but does not slide below the upper end of the backrest. It becomes possible to easily and surely perform folding of the legs and the seat portion, and opening of the bathroom chair by pushing operation and deployment of the seat portion.

For this reason, it is preferable that the folding lever is non-rotatably attached to the back surface of the backrest portion.

The folding lever causes the bathroom chair in the open state to fold the seat portion in a substantially vertical state by the lifting operation, and the pushing operation causes the bathroom chair in the closed state to make the seat portion in a substantially horizontal state. It is used to put the legs in the opened state. For this reason, if the folding lever is rotatable, the angle of the folding lever changes during the pulling up and pushing operations, and the operability is reduced, and after pulling up the folding lever, without pulling the pulling hand, This is because the function peculiar to the present invention that the bathroom chair can be continuously carried by lifting it up will be lost.

As described above, in the bathroom chair of the present invention, as the lock releasing means for releasing the engagement between the seat portion and the leg frame by the locking means, the chair is slid vertically only in the upper region of the upper end portion of the backrest. Since the folding lever is arranged so that the upper end of the folding lever is substantially flush with the upper end of the backrest, the engagement of the seat portion and the leg frame by the locking means can be performed only by one-touch operation of pulling the folding lever upward. Once released, the seat can be pivoted from a substantially horizontal, unfolded condition to a substantially vertical, folded condition to place the bathroom chair in a closed condition. In addition, the bathroom chair can be lifted and carried as it is without having to change the hand that lifts the folding lever.

Further, the seat portion can be rotated from the substantially vertical folded state to the substantially horizontal unfolded state and the bathroom chair can be opened by only one-touch operation of pushing the folding lever downward. In particular, in the case of the bathroom chair of the present invention, in the state where the bathroom chair is folded and made to stand on a horizontal plane, the upper end portion of the backrest portion and the upper end portion of the folding lever become higher from the surface side of the backrest portion toward the rear side. Since it is inclined so that by pushing the upper end part of the backrest part and the upper end part of the folding lever by this inclination, the force is easily transmitted to the rear leg part and the rear leg frame, resulting in the expansion of the bathroom chair. It will be easier.

In the bathroom chair of the present invention, the unlocking means has a first arm and a second arm, and comprises a lever means rotatably mounted about a rotation axis, and a folding lever. Are preferably connected to the first arm.

In the present invention, when the folding lever is connected to one of the levers provided with the first arm and the second arm for connection, the vertical movement of the folding lever along the back surface of the backrest is prevented. At any position of the backrest part, it can be taken out as a reciprocating motion on an arc in any direction along the back surface of the backrest part by the other arm of the lever means. Therefore, if a wire for transmitting the operation of the folding lever to the locking means is connected to the other arm of the lever means, the movement of the wire will not be hindered by extreme bending, and the appearance of the backrest will be improved. It becomes possible to freely arrange the inside and the outside.

In addition, the length of the first arm 910 of the lever means 91 (more accurately, the distance from the connection point with the folding lever in the first arm to the rotation axis) and the length of the second arm (more accurately). In addition, the distance from the connection point (attachment point) to the wire in the second arm to the rotation axis can be arbitrarily set and adjusted, and the attachment angle of the lever means with respect to the rotation axis can be set. It can be set and adjusted arbitrarily. In other words, the first arm and the second arm may have the same length (distance from the connection point to the rotation axis) to each other, or may have different lengths. Further, the first arm and the second arm can be aligned linearly with respect to the rotation axis of the lever means, or can be attached at different angles and arranged so as not to be linearly aligned.

As a result, the vertical stroke by the folding lever and its operation force can be freely increased or decreased as the stroke and its operation force on the arc by the other arm of the lever means via the lever means. it can.

In the bathroom chair of the present invention, it is preferable that the leg frame includes a reinforcing frame that connects the pair of left and right leg portions, and the seat portion is engaged with the reinforcing frame by the locking means. It can be locked to hold the horizontal state easily and securely.

According to the present invention, as the lock releasing means for releasing the engagement between the seat portion and the leg frame by the locking means, the folding lever that slides in the vertical direction only in the upper region of the upper portion of the backrest portion has the upper end. Since the part is arranged so as to be substantially flush with the upper end part of the backrest part, the engagement between the seat part and the leg frame by the locking means is released only by the one-touch operation of pulling the folding lever upward. Can be rotated from a substantially horizontal unfolded state to a substantially vertical folded state to close the bathroom chair. In addition, the bathroom chair can be lifted and carried as it is without having to change the hand that lifts the folding lever.

Further, the seat portion can be rotated from the substantially vertical folded state to the substantially horizontal unfolded state and the bathroom chair can be opened by only one-touch operation of pushing the folding lever downward.

According to the present invention, the folding lever is connected to one of the levers having the first arm and the second arm so as to connect the folding lever to the vertical direction along the back surface of the backrest portion by the folding lever. Can be taken out as a reciprocating motion on an arc in any direction along the back surface of the backrest by the other arm of the lever at any position of the backrest.

Further, according to the present invention, the respective lengths of the first arm and the second arm of the lever means are arbitrarily set and adjusted, and the respective mounting angles of the lever means with respect to the rotation axis are arbitrarily set and adjusted. By doing so, it is possible to freely increase or decrease the vertical stroke by the folding lever and its operation force as the stroke on the arc by the other arm of the lever means and its operation force via the lever means. Will also be able to.

It is the perspective view which looked at the bathroom chair concerning one embodiment of the present invention from the above. It is the perspective view which looked at the chair for a bathroom shown in Drawing 1 from the bottom. It is a front view of the chair for a bathroom shown in FIG. It is a rear view of the chair for a bathroom shown in FIG. It is a top view of the chair for a bathroom shown in FIG. FIG. 2 is a left side view showing a state in which the bathroom chair shown in FIG. 1 is opened and the seat portion is expanded substantially horizontally. FIG. 2 is a left side view showing a state in which the bathroom chair shown in FIG. 1 is closed and the seat is folded substantially vertically. It is the schematic diagram which partially expanded the locking means in order to show the operation|movement of the locking means of the bathroom chair shown in FIG. 1, (a) shows the position in which an engagement nail is in a locked state, (b) is. The position where the engaging claw is in the unlocked state is shown. 9A and 9B are cross-sectional views taken along the line BB of the lock means showing the operation of the lock means of the bathroom chair shown in FIG. 8, where FIG. 9A shows a position where the engaging claws are in a locked state, and FIG. The unlocked position is shown, and (c) shows a partially enlarged view of the engaging pawl. It is a perspective view which shows the state which the backrest part of the bathroom chair shown in FIG. 1 decomposed|disassembled. It is a schematic diagram of a backrest part which shows operation|movement of the unlocking means of the bathroom chair shown in FIG. 1, (a) shows the position which a folding lever is in a locked state, (b) shows a folding lever in an unlocked state. Shows a position. FIG. 9 is a cross-sectional view of the backrest portion taken along the line AA showing the operation of the unlocking means of the bathroom chair shown in FIG. 4, the solid line indicating the position where the folding lever is in the locked state, and the broken line indicating that the folding lever is in the unlocked state. The position is shown. It is the perspective view which looked at the bathroom chair from the back side in the state folded in order to show the seat part biasing means of the bathroom chair shown in FIG. 1, and its partial enlarged view. It is a schematic diagram which shows operation|movement of the seat part biasing means of the bathroom chair shown in FIG. 13, (a) shows the state which opened the bathroom chair, (b) shows the state which closed the bathroom chair. Shows.

Hereinafter, a bathroom chair according to an embodiment of the present invention will be described in detail with reference to the 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.

1. Overall Configuration of Bathroom Chair FIG. 1 is a perspective view of a bathroom chair 1 according to an embodiment of the present invention seen from above, and FIG. 2 is a bathroom chair 1 shown in FIG. A perspective view from below is shown. 3, 4 and 5 are a front view, a rear view and a plan view of the bathroom chair 1 shown in FIG. Further, FIG. 6 is a left side view showing a state in which the bathroom chair 1 shown in FIG. 1 is opened and the seat portion 6 is developed substantially horizontally, and FIG. 7 is shown. A left side view showing a state in which the bathroom chair shown in FIG. In this specification, unless otherwise specified, the front side of the backrest 5 of the bathroom chair 1 is “front”, the rear side of the backrest 5 is “rear”, and the chair 1 for bathroom is seated. The side with the left hand is called "left" and the side with the right hand is called "right".

As shown in FIGS. 1 to 5, the leg frame 2 of the bathroom chair 1 of this embodiment includes a front leg portion 30 and a support portion 31 extending upward from the front leg portion 30 for attaching the backrest portion 5. And a pair of left and right front leg frames 3 including In the front leg frame 3, the pair of left and right support portions 31 have horizontal portions at their upper portions, and are connected to each other so as to form a downward U-shape in a front view. Moreover, the leg frame 2 of the bathroom chair 1 of the present embodiment includes the rear leg frame 4 having the rear leg portion 40, and is rotatably attached to the front leg frame 3. Each of the front leg frame 3 and the rear leg frame 4 is formed of a metal hollow pipe, but the material is not limited to this.

Further, as shown in FIGS. 2 and 3, the front leg frame 3 also functions as a reinforcement, and a first reinforcement frame 32 that connects the pair of left and right front leg portions 30 and a front side of the first reinforcement frame 32. And a second reinforcing frame 33 arranged in The first reinforcing frame 32 can fix the seat portion 6 to the first reinforcing frame 32 in a non-rotatable manner by engaging with the engaging claws 80 of the locking means 8 described later. Further, in the second reinforcing frame 33, the movement of the seat portion 6 which rotates between the substantially horizontal deployed state and the substantially vertical folded state is changed between the open leg state separated from each other and the closed leg state close to each other. A pair of links 63 connected to a pair of second brackets 62 provided on the back surface of the seat portion 6 are rotatably attached in order to interlock with the movements of the front leg frame 3 and the rear leg frame 4 which are opened and closed between the two. Has been.

As shown in FIGS. 2 and 4, the rear leg frame 3 has a seat portion support frame 41 that connects a pair of left and right rear leg portions 40 (rear leg frame 4) and also serves as a reinforcement, and a seat portion support frame. It has a reinforcing frame 42 arranged on the rear side of 41. The seat portion support frame 41 is non-rotatably attached to the pair of left and right rear leg portions 40, and the seat portion 6 is mounted via a pair of first brackets 61 provided on the back surface of the seat portion 6. It is rotatably attached to the seat support frame 41.

As shown in FIGS. 1 and 2, sleeve-shaped front leg movable parts 300 and rear leg movable parts 400 are slidably attached to the outer peripheries of the front leg parts 30 and the rear leg parts 40. By adjusting the insertion length of the part 300 and the rear leg movable part 400, the lengths of the front leg part 30 and the rear leg part 40 with respect to the front leg part 30 and the rear leg part 40 (the height of the seat part 6) can be adjusted. It has become. Further, the front leg movable portion 300 and the rear leg movable portion 400 are provided with a plurality of engagement holes 301 and 401 along the longitudinal direction, and the engagement holes 301 and 401 are formed in the front leg portion 30 and the rear leg portion, respectively. The insertion length of the front leg movable part 300 and the rear leg movable part 400 with respect to the front leg part 30 and the rear leg part 40 can be adjusted by aligning and fitting with a pin (not shown) provided on the 40. ..

Further, a resin cap 402 is attached to the tip of the rear leg movable part 400 to prevent damage to the floor and slippage, and the front leg movable part 300 prevents damage to the floor and slippage. In addition, a resin cap 302 having a ground contact surface and a roller is attached for facilitating the opening and closing of the bathroom chair 1 in the closed state (see FIG. 2).

The backrest 5 is made of a resin material, and a foamed resin backrest cushion 50 is attached to the front surface thereof. Further, the backrest portion 5 is screwed to the horizontal portion connecting the pair of left and right support portions 31 at the upper portion of the front leg frame 3 via a mounting bracket (see FIG. 4).

The pair of left and right armrests 7 is made of a resin material, and is rotatably attached to the pair of left and right support portions 31 on the upper part of the front leg frame 3 (see FIG. 1 ).

The seat 6 is made of a resin material, and a seat cushion 60 made of foam resin is attached to the surface of the seat 6. As shown in FIGS. 2, 3, 6 and 7, a pair of first brackets 61 is provided on the back surface of the seat portion 6, and a sleeve (see FIG. The seat portion support frame 41 is inserted through a not-shown), and is rotatably attached to the pair of left and right rear leg portions 40 (rear leg frame 4).

Further, a pair of second brackets 62 is provided on the rear surface of the seat portion 6 in front of the pair of first brackets 61, and one end portion of the pair of links 63 has the second bracket 61. Is rotatably attached to the through hole. The other ends of the pair of links 63 are rotatably attached so as to clamp the second reinforcing frame 33 that connects the pair of left and right front leg portions 30. Therefore, in the bathroom chair 1 of the present embodiment, when the seat 6 is rotated between the substantially horizontal unfolded state (FIG. 6) and the substantially vertical folded state (FIG. 7), In association with the movement, the front leg frame 3 and the rear leg frame 4 are opened and closed between an open leg state (FIG. 6) in which they are separated from each other and a closed leg state (FIG. 7) in which they are close to each other.

Although not shown, the seat portion 6 does not necessarily have to be rotatably attached to the rear leg frame 4, and may be rotatably attached to the front leg frame 3. In this case, for example, by providing a pair of left and right front leg portions 30 (front leg frames 3) with seat portion support frames, the seat portion 6 can be easily rotatably attached to the front leg frames 3 similarly to the rear leg frames 4 described above. be able to.

2. Locking Means FIG. 8 shows a partially enlarged schematic view of the locking means 8 in order to show the operation of the locking means 8 of the bathroom chair 1 of the present embodiment. 80 shows a position in which it is engaged with the first reinforcement frame of the front leg frame 3 and is in the 32 lock state, and (b) shows that the engaging claw 80 is separated from the first reinforcement frame of the front leg frame 3. It shows the position in the unlocked state. Further, FIG. 9 shows a BB cross-sectional view of the lock means 8 showing the operation of the lock means 8 of the bathroom chair 1 shown in FIG. 8, and FIG. The position in which the frame 3 is engaged with the first reinforcement frame and is in the 32 lock state is shown, and (b) shows the engagement claw 80 separated from the first reinforcement frame of the front leg frame 3 to be in the unlocked state. And the (c) shows a partially enlarged view of the engagement pawl 80.

In the bathroom chair 1 of the present embodiment, the locking means 8 includes the engaging claw 80 and a coiled spring-like claw that urges the engaging claw 80 in the direction of engaging the first reinforcing frame 32 of the front leg frame 3. It is provided with a biasing means 81, a housing 82 for accommodating the engaging claw 80 and the claw biasing means 81, and is screwed to the back surface of the seat portion 6 via the housing 82.

The engaging claw 80 is housed in the housing 82 slidably downward with respect to the back surface of the seat 6 so that the engaging claw 80 can be engaged and disengaged with the first reinforcing frame 32 of the front leg frame 3. Further, a wire 92 for transmitting an operation by a folding lever 90 of a lock releasing means 9 described later is connected to a rear end of the engaging claw 80.

The housing 82 fixes an opening 820 at the tip thereof for advancing and retracting the engaging claw 80 slidably, a tip of a sheath 920 for slidably accommodating the wire 92, and the claw urging means 81. Has a fixed wall 821. A spiral spring-like pawl urging means 81 is arranged between the rear end of the engaging pawl 80 connected to the wire 92 and the fixed wall 821, and the engaging pawl 80 is provided with a first reinforcement of the front leg frame 3. Energize in the direction to engage the frame.

The engaging claw 80 has a sliding contact surface 800 that engages so as to come into contact with the first reinforcing frame 32 of the front leg frame 3, and the sliding contact surface 800 is from the sliding direction to the first reinforcing frame 32. It includes an inclined surface 801 inclined to the side to be separated (see FIG. 9C).

As shown in FIGS. 8(a) and 9(a), the engaging claw 80 engages with the first reinforcing frame 32 by traversing over the first reinforcing frame 32, and the seat portion 6 is formed. Is fixed to the first reinforcing frame 32 and is held in a substantially horizontal expanded state. Further, as shown in FIGS. 8(b) and 9(b), the engaging claw 80 is completely retracted from above the first reinforcing frame 32 to engage with the first reinforcing frame 32. To release the seat portion 6 from the first reinforcing frame 32 and bring the seat portion 6 into a substantially vertical folded state.

In the present embodiment, since the sliding contact surface 800 of the engagement claw 80 has the inclined surface 800 as described above (FIG. 9C), when the engagement with the first reinforcing frame 32 is released. Is the first reinforcing frame 32 before the engaging claw 80 is completely retracted to the position where it does not interfere with the first reinforcing frame 32 (the non-transverse position shown in FIGS. 8B and 9B). Allows the movement relatively approaching the central axis (for example, the wire 92) of the engaging claw 80. Further, in the present embodiment, the locking means 8 provided with the engaging claw 80 is attached to the seat portion 6, and the first reinforcing frame 32 is attached to the front leg frame 3, so that the first reinforcing frame 32 is provided. The movement toward the center axis of the engaging claw 80 allows the movement of the seat portion 6 away from the front leg frame 3.

That is, in the bathroom chair 1 of the present embodiment, when the seat portion 6 and the front leg frame 3 are unlocked, the engagement of the seat portion 6 with the first reinforcing frame 32 by the engagement claw 80 is completely released. It becomes possible to smoothly shift the seat portion 6 from the substantially horizontal deployed state to the substantially vertical folded state from the stage immediately before being opened, and accordingly, the open leg state in which the front leg frame 3 and the rear leg frame 4 are separated from each other. It is also possible to smoothly shift from the closed state to the closed state where they are close to each other.

Particularly, in the present embodiment, since the first reinforcing frame 32 of the front leg frame 3 that engages with the engaging claw 80 is made of a round bar having a circular cross section, the engaging claw 80 is the first reinforcing frame 32. When the engagement with is disengaged, the engaging claw 80 is moved along the outer peripheral surface of the first reinforcing frame 32 so that the first reinforcing frame 32 moves relatively closer to the central axis of the engaging claw 80. And the movement of the seat portion 6 away from the front leg frame 3 also increases. As a result, it becomes even smoother to shift the seat 6 from the substantially horizontal unfolded state to the substantially vertical folded state, and accordingly, the front leg frame 3 and the rear leg frame 4 come close to each other from the open leg state in which they are separated from each other. The transition to the closed leg state becomes even smoother.

For this reason, it is preferable that the sliding contact surface 800 is formed of a curved surface, and the radius of curvature of the sliding contact surface 800 is smaller in the radius of curvature r2 near the tip end than in the radius of curvature r1 near the root end of the engaging claw. It is preferable (see FIG. 9(c)). Further, the sliding contact surface 800 may be formed not only by a curved surface but also by a combination of a flat surface and a curved surface.

Further, in the present embodiment, in order to assist the leg opening of the bathroom chair 1, a torsion coil spring-like seat for urging the seat portion 6 from a substantially horizontal unfolded state to a substantially vertical folded state. Since the part biasing means 43 is attached between the seat 6 and the seat support frame 41 to which the seat 6 is rotatably attached (see FIG. 13), the seat biasing means 43. When the engagement of the engaging claw 80 with the first reinforcing frame 32 is released, the first reinforcing frame 32 moves smoothly so as to approach the central axis (for example, the wire 92) of the engaging claw 80. To assist. As a result, the force for shifting the seat 6 from the substantially horizontal unfolded state to the substantially vertical folded state is reduced, and accordingly, the front leg frame 3 and the rear leg frame 4 come close to each other from the open leg state in which they are separated from each other. The force for shifting to the closed leg state is also reduced, and the movement of the leg frames 3 and 4 becomes even smoother.

Although not shown, the engaging claws 80 do not necessarily have to engage with the front leg frame 3 or the reinforcing frame of the front leg frame 3, but by engaging with the rear leg frame 4 or the reinforcing frame of the rear leg frame 4, The portion 6 can be fixed to the rear leg frame 4 or the reinforcing frame of the rear leg frame 4 and held in a substantially horizontal expanded state.

3. Lock Release Means FIG. 10 is a perspective view showing a disassembled state of the backrest portion 5 of the bathroom chair 1 in order to show an outline of the lock release means 9 of the bathroom chair 1 of the present embodiment. Further, FIG. 11 shows a schematic view of the backrest portion for showing the operation of the unlocking means 9 of the bathroom chair 1 of the present embodiment, and (a) shows the position where the folding lever 90 is in the locked state. And (b) shows the position where the folding lever 90 is in the unlocked state. Further, FIG. 12 shows an AA sectional view of the backrest portion 5 showing the operation of the unlocking means 9 of the bathroom chair 1 shown in FIG. 4, and the solid line shows the folding lever 90 in the locked state. The position is shown, and the broken line shows the position where the folding lever 90 is in the unlocked state.

In the bathroom chair 1 according to the present embodiment, the lock releasing means 9 includes the folding lever 90 for hanging the hand, the lever means 91 rotatably connected to the folding lever 90, and the wire connected to the lever means 91. 92, and is screwed to the back surface of the backrest portion 5 via a cover 93 that covers the folding lever 90 and the lever means 91.

As shown in FIGS. 1, 2 and 12, in the present embodiment, the folding lever 90 is arranged so that its upper end portion is substantially flush with the upper end portion 51 of the backrest portion 5. Further, in the present embodiment, in the state where the bathroom chair 1 is folded and made to stand on a horizontal plane, the upper end portion 51 of the backrest portion 5 and the upper end portion of the folding lever 90 move from the front surface side of the backrest portion 5 toward the rear surface side. It is inclined to be higher (Fig. 7).

If the upper end portion of the folding lever 90 is arranged so as to be substantially flush with the upper end portion 51 of the backrest portion 5, the folding lever 90 projects to the back side at the upper end portion 51 of the backrest portion 5, so in the present embodiment. The folding lever 90 is provided with a concave portion 52 on the back surface of the backrest portion 5, and the folding lever 90 is allowed to slide in the vertical direction along the back surface of the backrest portion 5 in the concave portion 52. It is attached so that it does not project to the back side. Therefore, in the present embodiment, the folding lever 90 can be easily operated by inserting the finger of the hand through the gap formed between the folding lever 90 and the wall surface.

Further, the lock releasing means 9 is provided on the slide restricting elongated hole 913 provided on the folding lever 90 and the cover 93 inserted into the slide restricting elongated hole 914 in order to restrict the sliding amount of the folding lever 90. The slide restricting means 913 including the slide restricting projection 930 may be provided, and the slide restricting projection 930 may be provided on the back surface of the backrest 5. Further, although not shown, the slide restricting means 913 may be provided with a slide restricting elongated hole on the back surface of the cover 93 or the backrest portion 5 and a slide restricting protrusion on the folding lever 90. In the present embodiment, by providing the slide restricting means 913 in the unlocking means 9, after the folding lever 90 is pulled up to the slide limit, the bathroom chair 1 can be continuously lifted and carried without releasing the pulling handle. become able to.

In addition, "substantially flush" means that there is almost no step between the surface of the upper end portion of the folding lever 90 and the surface of the upper end portion 51 of the backrest portion 5, and in a strict sense, there is no step. It does not mean. In the present embodiment, the user pushes the upper end portion of the folding lever 90 and/or the upper end portion 51 of the backrest portion 5 downward, for example, with the palm, to open the bathroom chair 1 in the folded state. This is the area to use. Therefore, “substantially flush” means that the folding lever 90 does not feel a step even if the user pushes the upper end of the folding lever 90 and the upper end 51 of the backrest 5 at the same time with the palm. It is sufficient that the surface of the upper end portion and the surface of the upper end portion 51 of the backrest portion 5 are continuously formed.

In the present embodiment, the unlocking means 9 has a first arm 910 and a second arm 911, and is rotatably mounted around a rotary shaft 912 provided in the recess 52 of the backrest part 5. The lever means 91 is provided. Then, the first arm 910 of the lever means 91 is fitted with the elongated hole provided in the first arm 910 to the columnar protrusion 900 provided near the lower end portion of the folding lever 90, so that the folding lever 90 is fitted. Is rotatably connected with. Further, a wire 92 for transmitting an operation (rotation of the lever 91) by the folding lever 90 to the lock 8 is attached to the second arm 911 of the lever 91.

Further, since the bathroom chair 1 of the present embodiment is provided with the link 63 that connects the front leg frame 3 and the seat portion 6 as described above, the front leg frame 3 and the rear leg frame 4 are separated from each other by the spread legs. The movement for opening and closing between the closed state and the closed leg state in which the state is close to each other is configured to interlock with the movement for rotating the seat portion 6 between the substantially horizontal deployed state and the substantially vertical folded state.

For this reason, in the bathroom chair 1 of the present embodiment, when the folding lever 90 is pulled upward (broken line portion in FIG. 11(b), FIG. 12), the engagement between the seat portion 6 and the front leg frame 3 by the locking means 8 is performed. When the folding lever 90 is pushed downward while the seat 6 is unfolded and the seat 6 is expanded substantially horizontally to the open state where the seat 6 is folded substantially vertically (FIG. 11(a)). ), the solid line portion in FIG. 12), the bathroom chair 1 in the closed state shifts to the open state. As described above, in this embodiment, the upper end of the folding lever 90 slides above the upper end portion 51 of the backrest portion 5, but does not slide below the upper end portion 51 of the backrest portion 5. (FIGS. 11(a), 11(b) and 12), the legs of the bathroom chair 1 are closed and the seat portion 6 is folded by the above-described lifting operation, and the legs of the bathroom chair 1 are opened and the seat portion 6 is expanded by the pushing operation. Can be performed easily and surely.

As shown in FIGS. 11A, 11</b>B, and 12, in the present embodiment, the folding lever 90 is configured so that the upper end portion thereof can slide only in the upper region of the backrest portion 5 above the upper end portion 51. Further, the folding lever 90 is non-rotatably attached to the back surface of the backrest portion 5.

The folding lever 90 causes the bathroom chair 1 in the open leg state to be in a state in which the seat portion 6 is folded in a substantially vertical state by the lifting operation, and the pushing operation causes the bathroom chair 1 in the closed leg state to be seated. 6 is used to bring the leg into an open state in which it is substantially horizontally deployed. For this reason, if the folding lever 90 is rotatable, the angle of the folding lever 90 changes during pulling up and pushing operations, and the operability is degraded, and after pulling up the folding lever 90, release the puller. This is because the function peculiar to the present embodiment that the bathroom chair 1 can be lifted and carried around without any change is lost.

As described above, in the bathroom chair 1 of the present embodiment, as the lock releasing means 9 for releasing the engagement between the seat portion 6 and the front leg frame 3 by the locking means 8, the upper side of the upper end portion 51 of the backrest portion 5 is higher. Since the folding lever 90 that slides in the vertical direction only in the region is arranged such that the upper end portion thereof is substantially flush with the upper end portion 51 of the backrest portion 5, the folding lever 90 can be locked only by one-touch operation of pulling it up. The engagement between the seat portion 6 and the front leg frame 3 by the means 8 is released, and the seat portion 6 is rotated from the substantially horizontal unfolded state to the substantially vertical folded state so that the bathroom chair 1 is closed. Can be done (Fig. 7). Further, the bathroom chair 1 can be lifted and carried in the state as it is without having to change the hand which raised the folding lever 90.

Further, the seat 6 can be rotated from the substantially vertical folded state to the substantially horizontal unfolded state and the bathroom chair 1 can be opened by only one-touch operation of pushing the folding lever 90 downward. (Figure 6). In particular, in the case of the present embodiment, when the bathroom chair 1 is folded and made to stand on a horizontal plane, the upper end portion 51 of the backrest portion 5 and the upper end portion of the folding lever 90 are directed from the front surface side of the backrest portion 5 to the rear surface side. Since it inclines so that it becomes higher as it goes, pressing the upper end portion 51 of the backrest portion 5 and the upper end portion of the folding lever 90 by this inclination facilitates the transmission of force to the rear leg portion 30 and the rear leg frame 5. The deployment of the bathroom chair 1 becomes easy.

In the present embodiment, when the folding lever 90 is connected to one of the levers 91 having the first arm 910 and the second arm 911 for connection, the folding lever 90 moves along the back surface of the backrest portion 5. The vertical linear motion can be taken out as a reciprocating motion on an arc in any direction along the back surface of the backrest 5 by the other arm of the lever means 91 at any position of the backrest 5. become. Therefore, if the wire 92 for transmitting the operation of the folding lever 90 to the lock means 8 is connected to the other arm of the lever means 91, the movement of the wire 92 is not hindered by extreme bending, and the like. It becomes possible to freely arrange the inside and outside of the backrest in a good appearance.

Further, the length of the first arm 910 of the lever means 91 (more accurately, the distance from the connection point with the folding lever 90 in the first arm 910 to the rotating shaft 912) and the length of the second arm 911. The distance (the distance from the connection point (attachment point) to the wire 92 in the second arm 911 to the rotary shaft 912) can be arbitrarily set and adjusted, and the rotary shaft of the lever means 91 (projection 900). It is also possible to arbitrarily set and adjust the respective mounting angles with respect to ). In other words, the first arm 910 and the second arm 911 can have the same length (distance from the connection point to the rotation axis) or different lengths. Also, the first arm 910 and the second arm 911 can be aligned linearly with respect to the rotation axis (projection 900) of the lever means 91, or they can be attached at different angles and not aligned linearly. It can also be placed in.

As a result, the vertical stroke by the folding lever 90 and its operating force can be freely increased through the lever means 91 as the stroke on the arc by the other arm of the lever means 91 and its operating force. You can also let it.

4. Opening Assist Mechanism FIG. 13 is a perspective view of the bathroom chair 1 in a state of being folded to show the torsion coil spring-like seat biasing means 43 of the bathroom chair 1 according to the present embodiment, as viewed from the back side, and its perspective view. A partially enlarged view is shown. Further, FIG. 14 is a schematic diagram showing the operation of the seat biasing means 43 of the bathroom chair 1 shown in FIG. 13, and (a) shows a state in which the bathroom chair 1 is opened. (B) shows a state in which the bathroom chair 1 is closed.

In the present embodiment, as described above, the seat portion 6 is provided with the pair of first brackets 61 on the back surface thereof, and the seat portion support is inserted into the through hole of the first bracket 61 via the sleeve (not shown). By inserting the frame 41, it is rotatably attached to the pair of left and right rear leg portions 40 (rear leg frame 4) (see FIGS. 2, 3, 6, and 7). Further, a pair of left and right eccentric cams 44 are fixed to the seat portion support frame 41 so as not to be rotatable with respect to the seat portion support frame 41, and a seat portion urging means 43 in the form of a torsion coil spring is provided in the seat portion 6. And the eccentric cam 44 (FIG. 13). In the present embodiment, the seat biasing means 43 is not limited to the torsion coil spring, and a general biasing means such as a leaf spring can be used as long as the shape and the like are suitable.

Specifically, the seat portion urging means 43 is a torsion coil spring having a first arm 430 and a second arm 431, and the seat portion support frame 41 is inserted into the center opening of the torsion coil spring 43. Thus, the center of the torsion coil spring 43 and the center of the seat supporting frame 41 are arranged coaxially. Therefore, the seat biasing means 43 in the form of a torsion coil spring is securely fixed to the seat support frame 41 without displacing its center without providing a dedicated biasing means fixing bracket or the like. To be done.

The tip of the first arm 430 of the torsion coil spring 43 has a hook shape and is fixed to the eccentric cam 44 fixed to the seat support frame 41, while the second arm 430 of the torsion coil spring 43 is fixed. The tip of the arm 431 has a coiled shape, and is always arranged so as to abut against the back surface of the seat 6 so as to press it. That is, the torsion coil spring-shaped seat biasing means 43 is provided between the seat 6 and the rear leg frame 4 to which the seat 6 is rotatably mounted or the seat support frame 41 of the rear leg frame 4. Since the seat supporting frame 41 and the eccentric cam 44 do not rotate with respect to the rear leg portion 40 (rear leg frame 4), the torsion coil spring 43 always keeps the seat portion 6 in a substantially horizontal expanded state (see FIG. 14(a)) is urged in a direction to rotate it to a substantially vertical folded state (FIG. 14(b)).

Although not shown, the seat portion biasing means 43 is not necessarily provided between the seat portion 6 and the rear leg frame 4 to which the seat portion 6 is rotatably mounted or the seat portion support frame 41 of the rear leg frame 4. For example, when the seat 6 is rotatably attached to the front leg frame 2, it may be attached between the front leg frame 2 or the seat support frame of the front leg frame 2. ..

The bathroom chair 1 of the present embodiment is provided with the link 63 that connects the front leg frame 3 and the seat portion 6 as described above, so that the front leg frame 3 and the rear leg frame 4 are separated from each other in an open leg state and apart from each other. The movement of opening and closing between the close leg state and the close leg state is configured to interlock with the movement of rotating the seat portion 6 between a substantially horizontal deployed state and a substantially vertical folded state.

Therefore, in the bathroom chair 1 of the present embodiment, if the lock releasing means 9 releases the engagement between the seat portion 6 and the front leg frame 3 by the lock means 8, the seat portion 6 is automatically or almost externally. Without applying force, the bathroom chair 1 is rotated from the substantially horizontal deployed state to the substantially vertical folded state, and the bathroom chair 1 is in the closed state (FIG. 7). When the folding lever 90 is pushed downward against the biasing force of the torsion coil spring-shaped seat biasing means 43, the seat 6 is rotated from the substantially vertical folded state to the substantially horizontal unfolded state. Then, the bathroom chair 1 is opened (FIG. 6).

1-Bathroom chair 2-Leg frame 3-Front leg frame 30-Front leg (leg)
300... Front leg movable part 301... Engagement hole 302... Cap 31... Support part 32... First reinforcement frame 33... Second reinforcement frame 4... ..Rear leg frame 40... Rear legs (legs)
400... Rear leg movable part 401... Engagement hole 402... Cap 41... .Seat support frame (rotating shaft of seat and rear leg frame)
42... Reinforcement frame 43... Seat biasing means (torsion coil spring)
430... First arm 431... Second arm 44... Eccentric cam 5... Backrest 50... Back cushion 51... Upper end 52... Recess 6... Seat 60... Seat cushion 61... First bracket 62... Second bracket 63... Link 7... Armrest 8. .... Locking means 80... Engaging claw 800... Sliding contact surface 801... Inclined surface r1... Curvature radius near root end r2... Curvature radius near tip 81. ...Claw biasing means (string spring)
82...Housing 820...Opening 821...Fixed wall 9...Lock releasing means 90...Folding lever 900...Projection 91...Lever means 910... First arm 911...Second arm 912...Rotary shaft 913...Slide restricting means 914...Slide restricting elongated hole 92...Wire 920...Sheath 93... 930...Slide restriction protrusion

For example, JP 2008-2957 A 35 (Patent Document 1), engagement means for holding a seat portion connected to the leg, the position of the seat which is in a horizontal state by the open leg legs And disengagement means for disengaging the seat portion. The disengagement means disengages the seat portion, and the leg portion is closed to fold the seat portion upward. A folding chair that can be used is disclosed.

JP, 2008-295735, A JP, 2011-67448, A JP, 2011-250897, A

Further, the lock releasing means is composed of a slide restriction slot provided on the folding lever and a slide restriction projection provided on the cover, which is inserted into the slide restriction slot to restrict the sliding amount of the folding lever. It is preferable to provide a slide restricting means, and the slide restricting protrusion may be provided on the back surface of the backrest portion. Further, the slide restricting means may be provided with a slide restricting elongated hole on the back surface of the cover or the backrest, and a slide restricting protrusion on the folding lever. In the present invention, by providing the lock releasing means with the slide restricting means, after the folding lever is pulled up to the slide limit, the bathroom chair can be continuously lifted and carried without releasing the pulling hand.

Further, the length of the first arm of the lever means (more accurately, the distance from the connection point with the folding lever in the first arm to the rotation axis) and the length of the second arm (more accurately , The distance from the connection point (attachment point) to the wire in the second arm to the rotation axis can be arbitrarily set and adjusted, and the attachment angle of the lever means with respect to the rotation axis can be arbitrarily set. It can also be set and adjusted. In other words, the first arm and the second arm may have the same length (distance from the connection point to the rotation axis) to each other, or may have different lengths. Further, the first arm and the second arm can be aligned linearly with respect to the rotation axis of the lever means, or can be attached at different angles and arranged so as not to be linearly aligned.

2. Locking Means FIG. 8 shows a partially enlarged schematic view of the locking means 8 in order to show the operation of the locking means 8 of the bathroom chair 1 of the present embodiment. 80 shows a position in which it is engaged with the first reinforcement frame of the front leg frame 3 and is in the 32 lock state, and (b) shows that the engaging claw 80 is separated from the first reinforcement frame of the front leg frame 3. It shows the position in the unlocked state. Further, FIG. 9 shows a BB cross-sectional view of the lock means 8 showing the operation of the lock means 8 of the bathroom chair 1 shown in FIG. 8, and FIG. and engaged with the first reinforcing frame 32 of the frame 3 indicates a position in the locked state, (b) is spaced apart from the first reinforcing frame engaging claws 80 are front leg frame 3 unlocked And the (c) shows a partially enlarged view of the engagement pawl 80.

In this embodiment, since the sliding contact surface 800 of the engaging claw 80 has the inclined surface 801 as described above (FIG. 9C), when the engagement with the first reinforcing frame 32 is released. Is the first reinforcing frame 32 before the engaging claw 80 is completely retracted to the position where it does not interfere with the first reinforcing frame 32 (the non-transverse position shown in FIGS. 8B and 9B). Allows the movement relatively approaching the central axis (for example, the wire 92) of the engaging claw 80. Further, in the present embodiment, the locking means 8 provided with the engaging claw 80 is attached to the seat portion 6, and the first reinforcing frame 32 is attached to the front leg frame 3, so that the first reinforcing frame 32 is provided. The movement toward the central axis of the engaging claw 80 allows the movement of the seat portion 6 away from the front leg frame 3.

4. Leg Closure Assist Mechanism FIG. 13 is a perspective view of the bathroom chair 1 in a state of being folded to show the torsion coil spring-shaped seat biasing means 43 of the bathroom chair 1 according to the present embodiment as viewed from the back side and its part. A magnified view is shown. Further, FIG. 14 is a schematic diagram showing the operation of the seat biasing means 43 of the bathroom chair 1 shown in FIG. 13, and (a) shows a state in which the bathroom chair 1 is opened. (B) shows a state in which the bathroom chair 1 is closed.

Claims (11)

A leg frame having a pair of left and right legs,
With a backrest attached to the leg frame,
In a bathroom chair consisting of a seat portion rotatably attached to a leg frame between a substantially horizontal deployed state and a substantially vertical folded state,
The seat portion is provided with locking means for engaging the seat portion with the leg frame and maintaining a substantially horizontal deployed state,
The backrest portion is provided with a lock releasing means for releasing the engagement between the seat portion and the leg frame by the lock means, and the lock releasing means has a folding lever for hanging a hand, Moreover, the folding chair is arranged such that the upper end portion thereof is substantially flush with the upper end portion of the backrest portion. In a state in which the bathroom chair is folded and made to stand on a horizontal plane, the upper end portion of the backrest portion and the upper end portion of the folding lever are inclined so that the height increases from the surface side of the backrest portion toward the back side. The bathroom chair according to claim 1. The leg frame includes a front leg frame and a rear leg frame,
The front leg frame and the rear leg frame are rotatably attached to each other, and the movement for opening and closing the front leg frame and the rear leg frame between the open leg state in which they are separated from each other and the closed leg state in which they are in close proximity to each other is a The chair for a bathroom according to claim 1 or 2, wherein the chair is interlocked with the movement for rotating between a substantially horizontal unfolded state and a substantially vertical folded state. The leg frame includes a reinforcing frame that connects a pair of left and right legs, and the seat is engaged with the reinforcing frame by a locking means. Bathroom chair as described. 5. The bathroom chair according to claim 1, wherein the folding lever is attached so as to be vertically slidable along the back surface of the backrest portion. The bathroom chair according to claim 5, wherein an upper end portion of the folding lever is slidable only in a region above the upper end portion of the backrest portion. The bathroom chair according to claim 5, wherein the folding lever is non-rotatably attached to the back surface of the backrest portion. Only by one-touch operation of pulling up the folding lever upward, the engagement between the seat portion and the leg frame by the locking means is released, and the seat portion is rotated from the substantially horizontal deployed state to the substantially vertical folded state. The bathroom chair according to any one of claims 1 to 7, which is characterized. The bathroom according to any one of claims 1 to 8, wherein the seat portion is rotated from a substantially vertical folding state to a substantially horizontal unfolding state only by a one-touch operation of pushing the folding lever downward. Chair. The unlocking means has a first arm and a second arm, and comprises a lever means rotatably mounted about an axis of rotation, and the folding lever is connected to the first arm. The bathroom chair according to any one of claims 1 to 9, wherein the chair is a bathroom chair. The bathroom chair according to claim 10, wherein the second arm is connected to a wire for transmitting an operation by the lock releasing means to the lock means.

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