CN110664291A

CN110664291A - Chair for bathroom

Info

Publication number: CN110664291A
Application number: CN201910585230.1A
Authority: CN
Inventors: 青山智行; 岩本枫
Original assignee: ANLONG CHEMICALS Co Ltd
Current assignee: ANLONG CHEMICALS Co Ltd
Priority date: 2018-07-02
Filing date: 2019-07-01
Publication date: 2020-01-10
Anticipated expiration: 2039-07-01
Also published as: CN110664291B

Abstract

A chair (100) for a bathroom has a folded position (P1) at which the front legs (10) and the rear legs (20) are rotated relative to each other such that the lower portions of the front legs (10) and the lower portions of the rear legs (20) are close to each other, and an opened position (P2) at which the front legs (10) and the rear legs (20) are rotated relative to each other such that the lower portions of the front legs (10) and the lower portions of the rear legs (20) are spaced apart from each other. A non-slip part (37) is provided on the lower part of either the front leg (10) or the rear leg (20), and the non-slip part (37) is in contact with the ground (5) when in the folded position (P1) and the leg-opened position (P2), and the sliding resistance with the ground (5) is a first resistance. A sliding part (35) is arranged at the lower part of any other one of the front leg (10) and the rear leg (20), and the sliding part (35) is in contact with the ground (5) when in the folding position (P1), and the sliding resistance of the sliding part with the ground (5) is a second resistance smaller than the first resistance.

Description

Chair for bathroom

Technical Field

The invention relates to a chair for a bathroom.

Background

For example, patent document 1 discloses a foldable bathroom chair. The chair for bathroom is provided with: the seat back comprises a pair of left and right front legs, a pair of left and right rear legs, a connecting tool for connecting the front legs and the rear legs in a relatively rotatable manner, and a backrest. The upper ends of the pair of left and right front legs are connected by a connecting frame, and a backrest is provided on the connecting frame. In addition, leg rubbers for preventing slipping against the ground are provided at the lower ends of the front and rear legs, respectively.

In the bathroom chair with the legs opened, the bathroom chair can be folded by relatively rotating the front legs and the rear legs about the connecting tool so that the lower portions of the front legs and the lower portions of the rear legs are close to each other. On the other hand, in the folded chair for bathroom, the legs of the chair for bathroom can be opened by relatively rotating the front legs and the rear legs about the connecting tool so as to separate the lower portions of the front legs and the lower portions of the rear legs.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5905928

Disclosure of Invention

Technical problem to be solved

In the bathroom chair disclosed in patent document 1, when the legs of the folded bathroom chair are opened, the user brings the leg rubber of the rear leg into contact with the floor surface, and the bathroom chair is brought into a state of being inclined rearward so that the leg rubber of the front leg is suspended from the floor surface, and then presses the upper end of the backrest downward. Thereby, the connecting frame rotates downward, and the lower portions of the front legs rotate upward. As a result, the lower portions of the front legs and the lower portions of the rear legs are separated from each other, and the legs of the chair for bathroom can be opened. However, when the legs of the bathroom chair are opened, the leg rubber of the front leg needs to be suspended temporarily, and therefore, when the legs of the bathroom chair are opened, a troublesome operation for the user is caused.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a chair for a bathroom, which can easily open legs of the chair for a bathroom in a folded state.

(II) technical scheme

Hereinafter, the term "front leg and rear leg are suspended from the ground" means that leg rubbers and the like provided on the lower portions of the front leg and rear leg are suspended from the ground, and the term "front leg and rear leg are in contact with the ground" means that leg rubbers and the like provided on the lower portions of the front leg and rear leg are in contact with the ground. The inventors of the present application have made various studies on a structure in which legs of a bathroom chair are opened so as to avoid both front legs and rear legs from being suspended from the floor surface, for example, with respect to a bathroom chair in which the lower portions of the front legs and the lower portions of the rear legs are folded or opened by approaching or separating the lower portions of the front legs to or from the lower portions of the rear legs. Therefore, the inventors of the present application have first found that in the chair for bathroom disclosed in patent document 1, in a state where the leg rubbers of the front and rear legs are in contact with the floor surface, the leg rubbers exert a slip-preventing function, and therefore, it is difficult to separate the lower portions of the front and rear legs from each other. Further, the inventors of the present application further investigated and found that: the lower portions of the front legs and the lower portions of the rear legs can be easily separated from each other in a state where the front legs and the rear legs are in contact with the floor surface in the folded bathroom chair by providing a structure that is easily slidable with respect to the floor surface at the lower ends of either the front legs or the rear legs.

The chair for bathroom of the invention is provided with: a first leg, a second leg, a moving mechanism. The lower portion of the second leg is disposed away from the lower portion of the first leg. The moving mechanism relatively approaches or separates a lower portion of the first leg from a lower portion of the second leg. When the positions of the first leg and the second leg when the lower portion of the first leg and the lower portion of the second leg are close to each other are set as a folded position, and the positions of the first leg and the second leg when the lower portion of the first leg and the lower portion of the second leg are away from each other are set as an opened leg position, a slip prevention portion that is in contact with the ground when the lower portion of either one of the first leg and the second leg is in the folded position and the opened leg position and has a first resistance as a sliding resistance with the ground is provided on the lower portion of either one of the first leg and the second leg. A sliding portion that comes into contact with the ground in the folded position and has a second resistance smaller than the first resistance against sliding on the ground is provided at a lower portion of the other of the first leg and the second leg.

According to the chair for bathroom of the present invention, the sliding part and the anti-slip part are in contact with the ground when the chair is in the folded position. At this time, the lower portion of the first leg is separated from the lower portion of the second leg by applying a force to the bathroom chair from above, and the slide portion moves relative to the floor surface. As a result, the legs of the bathroom chair can be opened. Thus, in the present invention, the legs of the folded chair for bathroom can be opened in a state where the slide part and the anti-slip part are in contact with the floor surface. Therefore, unlike the bathroom chair disclosed in patent document 1, it is not necessary to perform an operation of temporarily suspending the front legs from the floor surface, and therefore, the legs of the bathroom chair in the folded state can be easily opened.

According to a preferred embodiment of the present invention, the first leg is a front leg, and the second leg is a rear leg. The moving mechanism is configured to couple the first leg and the second leg to be relatively rotatable.

According to the above aspect, the sliding portion moves relative to the floor surface by applying a force to the bath chair from above, and the front leg and the rear leg are rotated relative to each other so that the lower portion of the front leg and the lower portion of the rear leg are separated from each other. Therefore, the legs of the folded chair for bathroom can be opened in a state where the slide part and the anti-slip part are in contact with the floor.

According to a preferred aspect of the present invention, another antiskid portion that does not contact the ground surface in the collapsed position and contacts the ground surface in the leg open position and has a third resistance greater than the second resistance is provided below the other of the first leg and the second leg.

According to the above aspect, in the folded position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the ground surface via the sliding portion, and the other anti-slip portion is not in contact with the ground surface. Therefore, the legs of the folded chair for bathroom can be easily opened. In addition, when the legs are in the open position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the ground through the other anti-slip portion. Therefore, when the user sits on the bathroom chair with the legs open, the bathroom chair can be made less likely to slide with respect to the floor.

According to another preferred embodiment of the present invention, the sliding portion is configured not to contact the ground surface when the leg is in the open position.

According to the above aspect, when the leg is in the leg open position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the ground surface via the other sliding portion, and the sliding portion is not in contact with the ground surface. Therefore, when the user sits on the bathroom chair with the legs open, the bathroom chair can be made less likely to slide with respect to the floor.

According to another preferred embodiment of the present invention, the other antiskid portion is disposed above a lower end of the slide portion in the folded position.

According to the above aspect, in the folded position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the ground surface via the sliding portion, and the other anti-slip portion is not in contact with the ground surface. Therefore, when the legs of the folded chair for bathroom are opened, the lower portion of the first leg and the lower portion of the second leg can be easily separated from each other while the sliding portion is brought into contact with the floor surface. Therefore, the legs of the chair for bathroom are easily opened.

According to another preferred aspect of the present invention, the sliding portion is disposed above a lower end of the other anti-slip portion in the leg open position.

According to the above aspect, in the leg open position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the ground surface via the other anti-slip portion, and the sliding portion is not in contact with the ground surface. Therefore, when the user sits on the bathroom chair, the bathroom chair can be made less likely to slide with respect to the floor surface.

According to another preferred embodiment of the present invention, the sliding portion is a roller provided to be rotatable with respect to a lower portion of the other of the first leg and the second leg.

According to the above aspect, in the folded position, the roller of any other one of the first leg and the second leg is in contact with the ground. Therefore, when the legs of the folded bathroom chair are opened, the rollers rotate relative to the ground, so that the lower portion of the first leg and the lower portion of the second leg are easily separated from each other.

According to another preferred embodiment of the present invention, the roller is detachably provided to a lower portion of the other of the first leg and the second leg.

A bathroom chair is a chair used in a bathroom, and for example, dirt such as scale and hair is likely to adhere to a roller. However, in the above aspect, the roller can be easily detached from the lower portion of any other one of the first leg and the second leg. Therefore, it is easy to remove the dust attached to the cap and to clean the cap.

According to another preferred aspect of the present invention, the chair for bathroom includes a cap covering a lower portion of any one of the first leg and the second leg and having a fitting space recessed upward from a bottom surface; the roller cover is detachably fitted into the fitting space of the cap, and rotatably accommodates the roller such that a lower end of the roller is exposed downward.

According to the above aspect, the roller can be attached to the cap through the roller cover. In addition, the roller is rotatably accommodated in the roller cover. Therefore, by providing such a cap and a roller cover, the roller can be detachably provided on the lower portion of any other of the first leg and the second leg, and the roller can be rotated in a state of being provided on the lower portion of any other of the first leg and the second leg.

According to another preferred embodiment of the present invention, a concave portion is formed in either one of the inner peripheral surface of the cap or the outer peripheral surface of the roller cover. A convex portion that fits into the concave portion is formed on the other of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover.

According to the above aspect, when the roller cover is fitted into the cap, the concave portion and the convex portion are fitted to each other, and the vertical movement of the roller cover is further restricted. Therefore, the roller cage is not easily detached from the cap.

According to another preferred form of the invention, the cap is formed of an elastomer. A groove is formed in a lower portion of an outer peripheral surface of the roller shell.

According to the above aspect, the tip of the removal tool such as a straight screwdriver is inserted into the groove from between the cap and the roller cover. The roller cover can be removed from the cap by operating the removal tool with the tip end of the removal tool inserted into the groove. Therefore, the roller cover and the roller accommodated in the roller cover can be easily removed from the cap by using the removing tool.

According to another preferred embodiment of the present invention, at least a surface of the non-slip portion which contacts the ground is formed of rubber.

The rubber is a material that does not easily slip with respect to the ground. Therefore, by forming at least the surface of the non-slip portion that contacts the ground surface with rubber, it is possible to manufacture a non-slip portion that is not likely to slide on the ground surface.

According to another preferred embodiment of the present invention, the sliding portion is provided at a lower portion of the front leg. The antiskid part is arranged at the lower part of the rear leg.

For example, the chair for a bathroom can be used in a state of being away from a wall and in a state of being close to the wall. In this case, the folded chair for a bathroom is arranged in a state of being away from the wall and being close to the wall, and a force is applied to the chair for a bathroom from above. At this time, the lower portion of the front leg is moved forward so as to be away from the lower portion of the rear leg, whereby the legs of the chair for bathroom can be opened. Therefore, the legs of the folded bathroom chair, which is in a state of being away from the wall and approaching the wall, can be easily opened.

According to another preferred embodiment of the present invention, the sliding portion is provided on the front side of the lower portion of the front leg.

According to the above aspect, the front portion of the lower end of the front leg in the leg open position is located at the lowermost end of the front leg in the folded position. Therefore, by providing the sliding portion on the front side of the lower portion of the front leg, the sliding portion can be easily brought into contact with the floor surface in the folded position.

According to another preferred aspect of the present invention, the bathroom chair includes a pressing portion provided directly or indirectly on the front leg so as to be disposed behind the moving mechanism in a side view in the folded position and the leg-open position. The pressing portion is configured to be capable of moving a lower portion of the front leg away from a lower portion of the rear leg by applying a downward force.

According to the above aspect, even when a relatively small force is applied from above to the pressing portion, the lower portion of the front leg is easily moved forward so as to be separated from the lower portion of the rear leg by the force. Therefore, the legs of the chair for bathroom can be opened with relatively small force.

According to another preferred aspect of the present invention, a contact area of the sliding portion with the ground in the folded position is a first area. The area of contact of the sliding portion with the ground in the leg-open position is a second area smaller than the first area.

According to the above aspect, when the legs of the folded bathroom chair are opened, the sliding portion has a large contact area with the floor surface, and therefore, the leg provided with the sliding portion of the front leg and the rear leg is easily moved. In addition, since the contact area between the sliding portion and the floor surface is small in the leg-open position, the chair for bathroom can be made less likely to slide with respect to the floor surface.

(III) advantageous effects

According to the present invention, it is possible to provide a chair for a bathroom, which can easily open legs of the chair for a bathroom in a folded state.

Drawings

Fig. 1 is a perspective view of a chair for a bathroom according to an embodiment.

Fig. 2 is a front view of the chair for bathroom.

Fig. 3 is a rear view of the chair for bathroom.

Fig. 4 is a plan view of the chair for bathroom.

Fig. 5 is a left side view showing a state where legs of the chair for bathroom are opened.

Fig. 6 is a left side view showing a folded state of the chair for bathroom.

Fig. 7 is a perspective view of a chair for a bathroom.

Fig. 8 is a perspective view of a chair for a bathroom.

Fig. 9 is a left side view of the front antiskid cap and roller showing the leg open position.

Fig. 10 is a left side view of the front anti-slip cap and roller shown in a folded position.

Fig. 11 is a left side view of the front anti-slip cap showing a leg open position in another embodiment.

Fig. 12 is a left side view of the front anti-slip cap shown in a folded position in another embodiment.

Fig. 13 is a perspective view of another embodiment cap, roller cage and roller.

FIG. 14 is a front cross-sectional view of another embodiment of a cap, roller cage and roller.

Fig. 15 is a perspective view of another embodiment cap.

FIG. 16 is a side view of another embodiment roller cage and roller.

Fig. 17 is an exploded perspective view of a roller shell according to another embodiment.

Description of the reference numerals

10-front leg; 20-rear leg; 30-a rotating mechanism; 33-front side non-slip cap (other non-slip part); 35-rollers (slides); 37-rear side non-slip cap (non-slip portion); 100-chair (bathroom chair); p1-folded position; p2-leg open position.

Detailed Description

The chair for bathroom of the present invention will be described below with reference to the accompanying drawings. The embodiment described below is only one embodiment of the present invention, and it is needless to say that the present invention is not limited thereto.

< embodiment >

Fig. 1 is a perspective view of a chair 100 for a bathroom according to the present embodiment. In the following description, front, rear, left, right, up, and down refer to front, rear, left, right, up, and down, respectively, as viewed from a user seated in the bathroom chair 100. The symbols F, Rr, L, R, U, D in the drawings respectively represent front, rear, left, right, upper and lower. However, these directions are only defined for convenience of explanation, and are not intended to limit the form of the bathroom chair 100.

Hereinafter, the bathroom chair 100 will be simply referred to as the chair 100. The chair 100 of the present embodiment is foldable. The chair 100 is mainly used in a bathroom. The chair 100 is used by, for example, an elderly person or a care-receiver when bathing in a bathroom. However, the place of use of the chair 100 is not limited to the bathroom, and the object of use of the chair 100 is not limited to the elderly or the care-receiver.

Fig. 2, 3, and 4 are front, rear, and top views of the chair 100, respectively. Fig. 5 and 6 are left side views showing the opened leg state of the chair 100 and the folded state of the chair 100, respectively. The chair 100 is used with the legs open and folded when not in use. Fig. 7 and 8 are perspective views of the chair 100.

As shown in fig. 5, the chair 100 is placed on the floor 5, for example. Here, the floor 5 includes a bottom surface of the bathtub in addition to the floor of the bathroom. The floor 5 may be a floor of a room or a corridor at each floor of a building.

As shown in fig. 1 to 6, the chair 100 includes: front legs 10, rear legs 20, a rotation mechanism 30, a seat 50, a backrest 70, an operating handle 80, and an armrest 90.

In the following description, the positions of the respective parts and components indicate the positions of the legs of the chair 100 in the opened state, unless otherwise specified. As shown in fig. 2, the front leg 10 has a pair of tubular structures provided on the left and right. The front leg 10 is an example of a first leg of the present invention. In the present embodiment, the left front leg 10 and the right front leg 10 have a bilaterally symmetrical shape. As shown in fig. 5, the front leg 10 has: a lower front leg 11 extending obliquely forward and downward, and an upper front leg 12 extending obliquely rearward and upward from the lower front leg 11. In the present embodiment, the lower portion of the front leg 10 is the lower front leg 11.

The front legs 10 are telescopic and adjustable in length. Although not shown, the front leg 10 includes: a front leg upper tube part, and a front leg lower tube part into which the front leg upper tube part is slidably inserted. The length of the front leg 10 can be adjusted by adjusting the insertion length of the front leg upper tube part with respect to the front leg lower tube part.

In the present embodiment, as shown in fig. 3, the left and right front legs 10 are coupled to each other by a coupling frame 15. The coupling frame 15 includes: a pair of left and right vertical frames 16 extending rearward and obliquely upward from the upper front legs 12 of the left and right front legs 10 as shown in fig. 5, and a horizontal frame 17 bridging between the left vertical frame 16 and the right vertical frame 16 as shown in fig. 3. The pair of left and right front legs 10 and the coupling frame 15 may be separate bodies or may be integrated.

As shown in fig. 5, the lower portion of the rear leg 20 is provided at a position distant from the lower portion of the front leg 10 (in this case, at a position distant rearward). At least a part (lower part in the present embodiment) of the rear leg 20 is disposed rearward of the front leg 10 in the side view. As shown in fig. 3, the rear leg 20 is a pair of tubular members provided on the left and right. The rear leg 20 is an example of the second leg of the present invention. In the present embodiment, the left rear leg 20 and the right rear leg 20 have a bilaterally symmetrical shape. As shown in fig. 5, the rear leg 20 has: a lower rear leg 21 extending obliquely rearward and downward, and an upper rear leg 22 extending obliquely forward and upward from the lower rear leg 21. In the present embodiment, the lower portion of the rear leg 20 is the lower rear leg 21.

The rear legs 20 are also extendable and adjustable in length as the front legs 10. Although not shown, the rear leg 20 includes: a rear leg upper tube part and a rear leg lower tube part into which the rear leg upper tube part is slidably inserted. The length of the rear leg 20 can be adjusted by adjusting the insertion length of the upper rear leg pipe portion with respect to the lower rear leg pipe portion. In the present embodiment, the height of the seat 50 can be adjusted by adjusting the length of the left and right front legs 10 and the length of the left and right rear legs 20.

The front leg 10 and the rear leg 20 are mutually rotatably coupled via a rotating mechanism 30. The rotation mechanism 30 is an example of a moving mechanism of the present invention, and moves the lower portion of the front leg 10 and the lower portion of the rear leg 20 relatively close to or away from each other. Here, the rotation mechanism 30 is a mechanism that couples the front leg 10 and the rear leg 20 and rotates the front leg 10 and the rear leg 20 mutually. The structure of the rotation mechanism 30 is not particularly limited. In the present embodiment, the rotation mechanism 30 has a coupling shaft 31. In the present embodiment, as shown in fig. 2, since the front leg 10 and the rear leg 20 are provided in a pair on the left and right sides, the coupling shaft 31 is also provided in a pair on the left and right sides. The coupling shaft 31 is a member extending in the left-right direction, and couples the upper front leg 12 of the front leg 10 and the upper rear leg 22 of the rear leg 20 as shown in fig. 5. The front legs 10 are rotatable with respect to the rear legs 20 about the coupling shafts 31, and the rear legs 20 are rotatable with respect to the front legs 10 about the coupling shafts 31. In the present embodiment, the chair 100 can be folded as shown in fig. 6 by relatively rotating the front legs 10 and the rear legs 20 so that the lower portions of the lower front legs 11 of the front legs 10 (hereinafter also simply referred to as the lower portions of the front legs 10) and the lower portions of the lower rear legs 21 of the rear legs 20 (hereinafter also simply referred to as the lower portions of the rear legs 20) are close to each other. Conversely, the legs of the chair 100 can be opened as shown in fig. 5 by relatively rotating the front legs 10 and the rear legs 20 so that the lower portions of the front legs 10 and the lower portions of the rear legs 20 are spaced apart from each other.

In the present embodiment, the positions of the front legs 10 and the rear legs 20 after the front legs 10 and the rear legs 20 are rotated with respect to each other so that the lower portions of the front legs 10 and the lower portions of the rear legs 20 are brought close to each other, as shown in fig. 6, are referred to as folded positions P1. The folded position P1 is a position where the chair 100 is folded. The positions of the front legs 10 and the rear legs 20 after the front legs 10 and the rear legs 20 are rotated with respect to each other so that the lower portions of the front legs 10 and the lower portions of the rear legs 20 are separated from each other as shown in fig. 5 are referred to as leg opening positions P2. The leg opening position P2 is a position in which the legs of the chair 100 are opened.

As shown in fig. 5 and 6, the front legs 10 cross the rear legs 20 at the folded position P1 and the leg-opening position P2. As shown in fig. 6, in the folded position P1, the axis a11 of the lower front leg 11 of the front leg 10 is inclined obliquely upward forward from the vertical direction, and the axis a12 of the upper front leg 12 extends obliquely upward rearward from the axis a 11. However, in the folded position P1, the axis a11 of the lower front leg 11 may extend in the vertical direction. In the folded position P1, the axis a21 of the lower rear leg 21 of the rear leg 20 is inclined rearward and obliquely upward from the vertical direction, and the axis a22 of the upper rear leg 22 extends forward and obliquely upward from the axis a 21. A portion of the axis a22 is bent. In the folded position P1, the axis a21 of the lower rear leg 21 may extend in the vertical direction.

As shown in fig. 5, in the leg open position P2, the axis a11 of the lower front leg 11 extends obliquely forward and downward, and the axis a12 of the upper front leg 12 extends obliquely rearward and upward from the axis a 11. In addition, in the leg open position P2, the axis a21 of the lower rear leg 21 extends obliquely rearward and downward, and the axis a22 of the upper rear leg 22 extends obliquely forward and upward from the axis a 21. For example, when the distance between the lower rear end of the front leg 10 and the lower front end of the rear leg 20 in the folded position P1 is defined as the first distance D1 (see fig. 6), the distance between the lower rear end of the front leg 10 and the lower front end of the rear leg 20 in the leg open position P2 is defined as the second distance D2 (see fig. 5) which is longer than the first distance D1. By relatively rotating the front legs 10 and the rear legs 20, the positions of the front legs 10 and the rear legs 20 can be changed from the folded position P1 to the leg-opened position P2, or from the leg-opened position P2 to the folded position P1.

In the present embodiment, as shown in fig. 5, the lower portion of the front leg 10 is provided with: a front nonslip cap 33 as an example of another nonslip portion of the present invention, and a roller 35 as an example of a sliding portion of the present invention. A rear antiskid cap 37 as an example of an antiskid member of the present invention is provided at the lower end of the rear leg 20.

Fig. 9 is a left side view of the front antiskid cap 33 and the roller 35 showing the leg opening position P2. Fig. 10 is a left side view of the front antiskid cap 33 and the roller 35 showing the folded position P1. As shown in fig. 9, the front antiskid cap 33 covers the lower portion of the lower front leg 11 of the front leg 10. The front antiskid caps 33 are separate from the front legs 10 in the present embodiment, but may be formed integrally with the front legs 10 in part or in whole. Here, the front antiskid cap 33 is configured not to contact the floor 5 in the folded position P1 as shown in fig. 10, but to contact the floor 5 in the leg-open position P2 as shown in fig. 9. Here, the surface of the front antiskid cap 33 that contacts the floor 5 in the leg opening position P2 is referred to as a contact surface 33 a. In the folded position P1, as shown in fig. 10, the contact surface 33a of the front antiskid cap 33 extends obliquely upward rearward without contacting the floor 5. In other words, in the folded position P1, the contact surface 33a gradually moves away from the floor 5 as it goes from the front end toward the rear end. At this time, the front end of the contact surface 33a does not contact the ground 5.

The contact area between the front antiskid cap 33 and the floor 5 is a first front antiskid area in the folded position P1 in fig. 10 and a second front antiskid area in the leg-open position P2 in fig. 9. Further, the first front side non-slip area includes a case of "0". Here, the first front side non-slip area is smaller than the second front side non-slip area.

The rollers 35 assist in spreading the front legs 10 and the rear legs 20 when spreading the legs of the chair 100. The roller 35 is rotatably provided to the front leg 10. The roller 35 is provided at the front side of the lower portion of the front leg 10. Here, a roller bracket 36 is provided on the front side of the lower portion of the front leg via a front antiskid cap 33. The roller bracket 36 and the front antiskid cap 33 may be separate or integrated. A rotation shaft 36a extending in the left-right direction is rotatably attached to the roller bracket 36. The roller 35 is mounted to the rotation shaft 36a and rotates together with the rotation shaft 36 a. In this way, the roller 35 is indirectly provided on the lower front leg 11 of the front leg 10 via the rotation shaft 36a, the roller bracket 36, and the front antiskid cap 33. However, the roller 35 may be rotatably provided directly at the lower portion of the front leg 10.

As shown in fig. 10, the roller 35 is configured to contact the floor 5 in the folded position P1. In the present embodiment, as shown in fig. 9, the roller 35 is configured not to contact the floor 5 in the leg open position P2, but may contact the floor 5 in the leg open position P2. As shown in fig. 10, in the folded position P1, the front antiskid cap 33 is disposed above the lower end of the roller 35. The lower end of the roller 35 is disposed below the contact surface 33a of the front antiskid cap 33. Therefore, at the folded position P1, the contact surface 33a is suspended from the floor surface 5. As shown in fig. 9, in the leg open position P2, the roller 35 is disposed above the lower end (here, the contact surface 33a) of the front antiskid cap 33. Therefore, in the leg open position P2, the roller 35 is suspended from the floor 5. Here, the roller 35 contacts the floor 5 while changing the position from the folded position P1 to the leg-open position P2.

The contact area between the roller 35 and the floor 5 is a first roller contact area in the folded position P1 in fig. 10, and a second roller contact area in the leg-open position P2 in fig. 9. Note that the second roller contact area includes a case of "0". Here, the second roller contact area is smaller than the first roller contact area. In the present embodiment, the first roller contact area is an example of the first area of the present invention, and the second roller contact area is an example of the second area of the present invention.

As shown in fig. 5, the rear antiskid cap 37 covers the lower portion of the lower rear leg 21 of the rear leg 20. The rear antiskid cap 37 is attached to the lower rear leg 21 as a separate body from the rear leg 20. However, a part or all of the rear antiskid cap 37 may be formed integrally with the rear leg 20. The rear antiskid cap 37 is in contact with the ground 5 in the folded position P1 and the leg-open position P2 as shown in fig. 5 and 6. Here, at least a part of the rear antiskid cap 37 contacts the floor 5 on the way of changing the position from the folded position P1 to the leg-open position P2.

In the present embodiment, as shown in fig. 5, in the leg open position P2, the entire bottom surface of the rear antiskid cap 37 is in contact with the ground 5. Here, the surface of the rear antiskid cap 37 that contacts the ground 5 in the leg opening position P2 is referred to as a contact surface 37 a. As shown in fig. 6, in the folded position P1, the contact surface 37a of the rear antiskid cap 37 extends obliquely upward and forward. In other words, in the folded position P1, the contact surface 37a gradually moves away from the floor 5 from the rear end toward the front end. At least the rear end of the contact surface 37a is in contact with the floor 5 in the folded position P1.

The contact area between the rear antiskid cap 37 and the ground 5 is a first rear antiskid area in the folded position P1 of fig. 6 and a second rear antiskid area in the leg-open position P2 of fig. 5. Here, the first rear non-slip area is smaller than the second rear non-slip area.

In the present embodiment, the sliding resistance of the rear antiskid cap 37 with respect to the ground 5 is the first resistance. The sliding resistance of the roller 35 with respect to the ground 5 is the second resistance. The sliding resistance of the front antiskid cap 33 with respect to the ground 5 is the third resistance. Here, the "sliding resistance" refers to a resistance generated between the chair 100 and the floor 5 when a downward force is applied thereto. "sliding resistance" includes, in addition to resistance generated when the member slides with respect to the ground 5, resistance generated when the member rotates with respect to the ground 5. In the present embodiment, the second resistance of the roller 35 is smaller than the first resistance of the rear-side nonslip cap 37 and smaller than the third resistance of the front-side nonslip cap 33. In addition, the first resistance is the same as the third resistance. Here, the first resistance is the same as the third resistance, and includes a slight error. Further, the first resistance may be larger than the third resistance or may be smaller than the third resistance.

The contact surface 33a of the front antiskid cap 33 and the contact surface 37a of the rear antiskid cap 37 are formed of rubber. In the present embodiment, the entirety of the front antiskid cap 33 and the entirety of the rear antiskid cap 37 are formed of rubber. However, the material forming the front-side nonslip cap 33 and the rear-side nonslip cap 37 is not limited to rubber. The portions other than the contact surface 33a of the front antiskid cap 33 and the portions other than the contact surface 37a of the rear antiskid cap 37 may be formed of materials other than rubber. The portion of the roller 35 that contacts the ground 5 is formed of polypropylene, for example. However, the roller 35 may be formed of polypropylene at a portion not in contact with the floor 5, or may be formed of a material different from polypropylene, for example, a material having a lower sliding resistance than the front antiskid cap 33.

In the present embodiment, as shown in fig. 8, a first support rod 41 and a first connecting rod 44 are provided between the left front leg 10 and the right front leg 10. The first support rod 41 and the first connecting rod 44 each extend in the left-right direction, and connect the left front leg 10 and the right front leg 10. The first support rod 41 is disposed diagonally upward from the rear of the first connecting rod 44, and is configured to support the seat 50 when the legs of the chair 100 are opened. The first support bar 41 is connected to the upper front leg 12 of the front leg 10. The first connecting rod 44 may be connected to the lower front leg 11 of the front leg 10 or may be connected to the upper front leg 12.

As shown in fig. 7, a second support rod 42 and a second connecting rod 45 are bridged between the left rear leg 20 and the right rear leg 20. The second support rod 42 and the second coupling rod 45 each extend in the left-right direction, and couple the left rear leg 20 with the right rear leg 20. The second support rod 42 is disposed diagonally above the second connecting rod 45 and configured to support the seat 50 when the legs of the chair 100 are opened. The second support bar 42 is connected to the upper rear leg 22 of the rear leg 20. The second connecting rod 45 may be connected to the lower rear leg 21 of the rear leg 20 or may be connected to the upper rear leg 22.

As shown in fig. 8, a pair of right and left rear brackets 61 are provided on the rear surface of the seat 50. The second support rod 42 is rotatably supported by the rear bracket 61. Therefore, the seat 50 is configured to be rotatable with respect to the rear leg 20 via the rear bracket 61 and the second support rod 42.

A pair of left and right front stays 62 is provided on the rear surface of the seat 50 in addition to the rear stay 61. The front bracket 62 is disposed forward of the rear bracket 61 and on the center side in the left-right direction of the rear bracket 61. A coupling shaft 63 extending in the left-right direction is attached to the front bracket 62.

In the present embodiment, the coupling shaft 63 attached to the front bracket 62 and the first coupling rod 44 are coupled by the link 66. Since the connecting shafts 63 are provided in a pair on the left and right sides, the links 66 are also provided in a pair on the left and right sides. The link 66 is a member that links the rotation of the seat 50 with respect to the rear legs 20 and the relative rotation of the front legs 10 and the rear legs 20 about the connecting shaft 31 of the rotating mechanism 30 when the chair 100 with the opened legs is folded and when the legs of the folded chair 100 are opened.

In the present embodiment, as shown in fig. 7, a pair of right and left supported portions 64 are provided on the back surface of the seat portion 50. The supported portion 64 is disposed rearward of the rear bracket 61 and the front bracket 62, and protrudes from the rear surface of the seat portion 50. The supported portion 64 is configured to contact the first support rod 41 when the legs of the chair 100 are opened, and to be supported by the first support rod 41. Therefore, when the legs of the chair 100 are opened, the seat 50 is supported by the front legs 10 via the supported portions 64 and the first support rods 41.

In the leg open position P2 of fig. 5, a part 22a of the upper rear leg 22 of the rear leg 20 is spaced downward from the seat 50. This portion is referred to herein as the distant portion 22 a. The remote portion 22a is provided with a reinforcing member 65. As shown in fig. 7, the reinforcing member 65 is configured to contact the first support rod 41 when the legs of the chair 100 are opened, and to support the first support rod 41. Therefore, when the legs of the chair 100 are opened, the first support rod 41 is supported by the rear leg 20 via the reinforcement member 65.

As shown in fig. 4, the seat portion 50 is formed on an upper surface and has a seat surface 51 on which a user sits. The material of the seat 50 is not particularly limited, and in the present embodiment, the seat 50 is a blow-molded article made of synthetic resin. A recess 50a recessed forward is formed at the rear end of the seat 50. The recess 50a is formed in the center of the seat 50 in the left-right direction. A handle 56 is disposed inside the recess 50 a. The handle 56 is fixed to the seat 50.

The backrest 70 is attached to the lateral frame 17 of the connecting frame 15. In the present embodiment, the backrest 70 and the lateral frame 17 are separate bodies, but the backrest 70 and the lateral frame 17 may be integrally formed. As shown in fig. 2, a hole 71 is formed in the backrest 70. The user can lift the chair 100 with one hand or move the chair 100 with one hand by inserting fingers into the holes 71 to hold the backrest 70. Here, a recess 72 that is recessed upward is formed in the lower end portion of the backrest 70. The material of the backrest 70 is not particularly limited, and in the present embodiment, the backrest 70 is a blow-molded synthetic resin article. In the present embodiment, the rear portion 70a of the backrest 70 is an example of the pressing portion of the present invention. As shown in fig. 6, in the folded position P1, the rear portion 70a of the backrest 70 is disposed rearward of the rotation mechanism 30 in side view.

As shown in fig. 5, the operating handle 80 is used to apply force to a user when the legs of the folded chair 100 are unfolded or when the chair 100 with the unfolded legs is folded. For example, the legs of the folded chair 100 can be opened by applying a force to the operating handle 80 in the vertical direction downward. In the present embodiment, the operation handle 80 is provided behind the backrest 70. Here, as shown in fig. 3, a bracket 81 is provided at the center of the lateral frame 17 of the connecting frame 15. The bracket 81 is provided with a shaft 82 (see fig. 5) extending in the left-right direction. The front end of the operating handle 80 is provided to the shaft 82 and rotates together with the shaft 82. Here, the operation handle 80 can be rotated about the tip thereof around the shaft 82, and the operation handle 80 can be raised and lowered. As shown in fig. 6, in the folded position P1, the operating handle 80 is disposed rearward of the rotating mechanism 30 in side view.

In the present embodiment, a pair of left and right pins 84 (see fig. 3) are connected to the operation handle 80 via a wire (not shown). As shown in fig. 3, a pair of left and right pins 84 are provided between the upper front legs 12 of the pair of left and right front legs 10 so as to be able to protrude from the receiving members 48 provided at both end portions of the first support rod 41 toward the center in the left-right direction. Hooks 49 are provided on a pair of left and right supported portions 64 provided on the back surface of the seat portion 50, respectively, on the center side in the left-right direction with respect to the accommodating member 48. The pin 84 engages with the hook 49 when protruding from the housing member 48. Here, when the operation handle 80 is in the lower position, the pin 84 engages with the hook 49, and when the operation handle 80 is lifted upward, the pin 84 is disengaged from the hook 49. Although not shown, springs are provided inside the pair of right and left housing members 48. The spring is configured to bias the pin 84 to maintain the folded state at the folded position P1, and bias the pin 84 to maintain the leg-open state at the leg-open position P2, so that the pin 84 engages with the hook 49. Therefore, when the chair 100 is in the folded state, the folded position P1 is maintained unless the operation handle 80 is operated. On the other hand, when the chair 100 is in the leg-open state, the state of the leg-open position P2 is maintained unless the operation handle 80 is operated.

As shown in fig. 1, the armrests 90 are attached to the pair of left and right vertical frames 16 of the connecting frame 15, respectively. In the present embodiment, as shown in fig. 4, a bracket 18 protruding forward is provided on the vertical frame 16. A horizontal shaft 19 extending in the left-right direction is provided to the bracket 18. The armrest 90 is rotatably mounted on the horizontal shaft 19. The armrest 90 is rotatably attached to the vertical frame 16 via the horizontal shaft 19 and the bracket 18. Here, the armrest 90 is rotatable between a horizontal state in which the front end portion is positioned forward and a vertical state in which the front end portion is positioned upward.

The structure of the chair 100 is explained above. Next, an example of the leg opening operation and the folding operation of the chair 100 will be described.

The leg opening operation and the folding operation of the chair 100 can be performed by one hand. As shown in fig. 5, when the chair 100 with the legs open is folded, the armrests 90 are first erected to change the armrests 90 from the horizontal state to the vertical state. The backrest 70 and the operating handle 80 are then held by hand. At this time, the operation handle 80 is rotated upward, and the pin 84 (see fig. 3) is disengaged from the hook 49 (see fig. 3). When the backrest 70 is then lifted up, the seat 50 rotates about the first support rod 41, and as shown in fig. 6, the rear portion of the seat 50 moves upward, while the front portion of the seat 50 moves downward.

In the present embodiment, as shown in fig. 8, since the front portion of the seat portion 50 is connected to the first connecting rod 44 via the link 66, when the front portion of the seat portion 50 moves downward, the front leg 10 receives a force directed diagonally downward rearward from the link 66 and the first connecting rod 44. As a result, as shown in fig. 6, the front leg 10 rotates about the connecting shaft 31 of the rotating mechanism 30, and the front leg 10 and the rear leg 20 approach each other. When the chair 100 is lifted, the self weight acts on the front legs 10 and the rear legs 20. The front leg 10 and the rear leg 20 also rotate relative to each other about the coupling shaft 31 due to their own weight. When the front leg 10 and the rear leg 20 rotate relative to each other, the contact surface 33a of the front antiskid cap 33 is suspended from the floor surface 5, and the roller 35 not in contact with the floor surface 5 is in contact with the floor surface 5. The front end of the contact surface 37a of the rear antiskid cap 37 is gradually separated from the ground surface 5, and when the roller 35 contacts the ground surface 5, only the rear end of the contact surface 37a contacts the ground surface 5. Here, the front leg 10 is easily moved toward the rear leg 20 in accordance with the rotation of the roller 35. When the front legs 10 and the rear legs 20 are rotated relative to each other in this way, the chair 100 is folded as shown in fig. 6, and the chair 100 is maintained at the folded position P1.

When the legs of the folded chair 100 are unfolded, the user can unfold the legs of the chair 100 without suspending the front legs 10 and the rear legs 20 from the floor 5 through other members. Here, the user first places his or her hand on the rear portion 70a of the backrest 70 and applies a force vertically downward to the rear portion 70a of the backrest 70. At this time, the operation reverse to the folding operation described above is performed, and the front leg 10 and the rear leg 20 rotate relative to each other about the coupling shaft 31. As a result, the lower portions of the front legs 10 and the lower portions of the rear legs 20 are gradually spaced apart. Here, in the folded position P1 shown in fig. 6, the rear end of the contact surface 37a of the rear antiskid cap 37 is in contact with the ground 5. As shown in fig. 10, in the folded position P1, the contact surface 33a of the front antiskid cap 33 is away from the floor 5, and the roller 35 contacts the floor 5. During the movement of the position from the folded position P1 to the leg-opening position P2, the rear antiskid cap 37 is in contact with the ground 5, and thus the position of the lower end of the rear leg 20 with respect to the ground 5 is substantially unchanged. On the other hand, while the position is moving from the folded position P1 to the leg-open position P2, the front antiskid cap 33 is not in contact with the ground 5, and the roller 35 is in contact with the ground 5. Therefore, the lower portion of the front leg 10 moves forward with the rotation of the roller 35, and the leg opening operation is promoted with the rotation of the roller 35. By performing such an operation, the legs of the chair 100 are opened to assume a posture of the opened leg position P2, as shown in fig. 5. Further, as shown in fig. 9, in the leg open position P2, the contact surface 33a of the front antiskid cap 33 is in contact with the ground 5, and the roller 35 is away from the ground 5, so the front leg 10 is not easily slid with respect to the ground 5.

As described above, in the present embodiment, as shown in fig. 6, in the folded position P1, the rollers 35 and the rear anti-slip cap 37 are in contact with the ground 5. At this time, by applying a force to the chair 100 from above, the rollers 35 move relative to the ground 5, and the front legs 10 and the rear legs 20 rotate relative to each other, so that the lower portions of the front legs 10 and the lower portions of the rear legs 20 are spaced apart. As a result, as shown in fig. 5, the chair 100 can be set to a state in which the legs are opened. In this way, in the present embodiment, the legs of the folded chair 100 can be opened in a state where the rollers 35 and the rear anti-slip cap 37 are in contact with the floor surface 5. Therefore, as in the bathroom chair disclosed in patent document 1, it is not necessary to perform an operation of temporarily suspending the front legs from the floor surface, and therefore, the legs of the chair 100 in the folded state can be easily opened.

In the present embodiment, the roller 35 is provided at the lower portion of the front leg 10. For example, the chair 100 can be used in a state of being away from a wall and in a state of being close to the wall. In this case, the folded chair 100 is arranged in a state of being away from the wall and in a state of being close to the wall, and a force is applied to the chair 100 from above. At this time, the legs of the chair 100 can be spread by moving the lower portions of the front legs 10 forward so as to be apart from the lower portions of the rear legs 20. Therefore, it is easy to open the legs of the folded chair 100 in a state of being back to the wall and in a state of being close to the wall.

In the present embodiment, the roller 35 is provided on the front side of the lower portion of the front leg 10. The lower end front side portion of the front leg 10 in the leg open position P2 is located at the lowermost end of the front leg 10 in the folded position P1. Therefore, by providing the roller 35 on the front side of the lower portion of the front leg 10, the roller 35 can be easily brought into contact with the floor 5 in the folded position P1.

In the present embodiment, as shown in fig. 10, in the folded position P1, the front antiskid cap 33 is disposed above the lower end of the roller 35. Thus, in the folded position P1, the front leg 10 contacts the floor 5 via the roller 35, and the front antiskid cap 33 does not contact the floor 5. Therefore, it is easy to open the legs of the folded chair 100. As shown in fig. 9, in the leg open position P2, the roller 35 is disposed above the lower end of the front antiskid cap 33. Thus, in the leg open position P2, the front leg 10 is in contact with the floor 5 via the front anti-slip cap 33, and the roller 35 is not in contact with the floor 5. Therefore, when the user sits on the chair 100 with the legs open, the chair 100 can be made less likely to slide with respect to the floor 5.

In the present embodiment, as shown in fig. 5 and 6, the rear portion 70a of the backrest 70 is provided to the front legs 10 via the coupling frame 15 so as to be disposed further rearward than the swivel mechanism 30 (specifically, the coupling shaft 31) in a side view at the folded position P1 and the leg-open position P2. Accordingly, even when a relatively small force (for example, about 20N to 80N) is applied from above to the rear portion 70a of the backrest 70, the front leg 10 can be rotated with respect to the rear leg 20 by the force, and therefore, the lower portion of the front leg 10 can be easily moved forward so as to be separated from the lower portion of the rear leg 20. Accordingly, the legs of the chair 100 can be spread with relatively small force.

In the present embodiment, the contact area of the roller 35 with respect to the floor 5 at the folded position P1 is the first roller contact area. The contact area of the roller 35 with respect to the ground 5 in the leg opening position P2 is a second roller contact area smaller than the first roller contact area. Accordingly, when the legs of the folded chair 100 are opened, the front legs 10 are easily moved forward because the contact area between the rollers 35 and the floor 5 is large. In addition, in the leg open position P2, since the contact area between the roller 35 and the floor surface 5 is small (here, 0), the chair 100 can be made less likely to slide on the floor surface 5.

In the present embodiment, as shown in fig. 10, the roller 35 is provided rotatably with respect to the lower portion of the front leg 10. Thus, when the legs of the folded chair 100 are opened, the lower portions of the front legs 10 and the lower portions of the rear legs 20 are easily separated from each other while the rollers 35 are rotated on the floor 5.

In the present embodiment, the contact surface 33a of the front antiskid cap 33 and the contact surface 37a of the rear antiskid cap 37 are formed of rubber. The rubber is made of a material that does not easily slide on the floor 5. Therefore, by forming the contact surfaces 33a and 37a with rubber, the front-side nonslip cap 33 and the rear-side nonslip cap 37 which are not easily slid with respect to the floor 5 can be manufactured.

The chair 100 of the present embodiment has been described above. Next, a bathroom chair according to another embodiment will be described. In the following description, the same reference numerals are used for the same components as those already described, and the description thereof is appropriately omitted.

< Another embodiment >

In the above embodiment, the roller 35 is used as an example of the sliding portion of the present invention, and when the legs of the chair 100 are opened, the front leg 10 is easily moved with respect to the floor 5 by the rotation of the roller 35. However, the sliding portion of the present invention is not limited to the roller 35. Fig. 11 is a left side view of the front antiskid cap 133 showing a leg opening position P2 in another embodiment. Fig. 12 is a left side view of the front antiskid cap 133 showing the folded position P1.

For example, as shown in fig. 11, a front anti-slip cap 133 may be provided on the lower front leg 11 of the front leg 10, and an anti-slip surface 133a, a slip surface 135 as an example of a sliding portion of the present invention may be provided on the front anti-slip cap 133. The sliding surface 135 is disposed in front of the anti-slip surface 133a in a side view. As shown in fig. 12, in the folded position P1, the anti-slip surface 133a is not in contact with the ground 5, and the sliding surface 135 is in contact with the ground 5. Here, in the folded position P1, the sliding surface 135 is a horizontally extending surface, and the anti-slip surface 133a extends obliquely upward rearward from the sliding surface 135.

As shown in fig. 11, in the leg open position P2, the slip-preventing surface 133a is in contact with the ground 5, and the sliding surface 135 is not in contact with the ground 5. Here, in the leg open position P2, the slip preventing surface 133a extends in the horizontal direction, and the sliding surface 135 extends obliquely upward and forward from the slip preventing surface 133 a.

In the present embodiment, the sliding resistance of the anti-slip surface 133a with respect to the ground surface 5 is different from the sliding resistance of the sliding surface 135 with respect to the ground surface 5. For example, the sliding resistance of the rear antiskid cap 37 (see fig. 5) with respect to the ground 5 is defined as a first resistance, the sliding resistance of the sliding surface 135 with respect to the ground 5 is defined as a second resistance, and the sliding resistance of the antiskid surface 133a with respect to the ground 5 is defined as a third resistance. At this time, the second resistance of the sliding surface 135 is smaller than the first resistance of the rear antiskid cap 37 and smaller than the third resistance of the antiskid surface 133 a. The first resistance may be greater than or less than the third resistance, which is the same as the third resistance. In order to achieve such a relationship of the sliding resistance, the material forming the sliding surface 135 may be different from the material forming the non-slip surface 133 a. In order to achieve such a relationship of the sliding resistance, the anti-slip surface 133a and the sliding surface 135 may be subjected to surface processing.

In the present embodiment, the same effects as those of the first embodiment can be obtained, and the folded chair legs can be easily opened.

Further, in the above embodiment, in the leg open position P2, the roller 35 is away from the ground 5. However, in the leg open position P2, the roller 35 may contact the ground 5 together with the contact surface 33a of the front antiskid cap 33.

In the above embodiment, the front antiskid cap 33 may be omitted. At this time, the roller 35 may be rotatably mounted to the lower end of the lower front leg 11 of the front leg 10. At this time, the roller 35 is in contact with the floor 5 at both the folded position P1 and the leg-opened position P2. In the case where the front anti-slip cap 33 is omitted, the sliding resistance between the contact surface 37a of the rear anti-slip cap 37 and the floor surface 5 is preferably so large that the chair 100 is not easily slid with respect to the floor surface 5 when the user is seated on the chair 100.

In the above embodiment, the roller 35 is provided on the front side of the lower portion of the front leg 10. However, the position of the roller 35 with respect to the front leg 10 is not particularly limited. For example, the roller 35 may be provided on the rear side of the lower portion of the front leg 10. The roller 35 may be provided on the left side of the lower portion of the front leg 10, or may be provided on the right side of the lower portion of the front leg 10.

In the above embodiment, the roller 35 as an example of the sliding portion of the present invention is provided in the front leg 10, but may be provided in the rear leg 20. In this case, the roller 35 may be provided on the rear side of the rear antiskid cap 37. However, the roller 35 may be provided on the front side of the rear antiskid cap 37, or may be provided on the left or right side. At this time, in the folded position P1, the contact surface 37a of the rear anti-slip cap 37 does not contact the floor 5, and the roller 35 contacts the floor 5. In the folded position P1, the contact surface 37a is located above the lower end of the roller 35. At this time, in the leg open position P2, the roller 35 may or may not contact the ground 5.

In the above embodiment, the moving mechanism of the present invention is the rotating mechanism 30, and the legs of the chair 100 are opened or folded by rotating the front legs 10 and the rear legs 20 relative to each other by the rotating mechanism 30. However, the moving mechanism of the present invention may be configured such that the lower portion of the front leg 10 and the lower portion of the rear leg 20 are relatively slid to be relatively close to or away from each other.

In the above embodiment, the legs of the chair 100 are opened or folded by relatively rotating the front legs 10 and the rear legs 20. However, the legs of the chair 100 may be opened or folded by approaching or separating the lower portion of the left leg (i.e., the left front leg 10 and the left rear leg 20) and the lower portion of the right leg (i.e., the right front leg 10 and the right rear leg 20). In this case, the moving mechanism (the rotating mechanism 30 in the above-described embodiment) of the present invention is configured to be able to relatively approach or separate the lower portion of the left leg from the lower portion of the right leg. In this case, for example, the right leg corresponds to the first leg of the present invention, and the left leg corresponds to the second leg of the present invention. The moving mechanism in this case may be configured such that the left leg and the right leg are coupled to each other so as to be rotatable, and the lower portion of the right leg is relatively slid with respect to the lower portion of the left leg, so that the lower portions of the left and right legs can be relatively moved toward and away from each other. In this case, the roller 35 may be provided on one of the pair of left and right front legs 10 (for example, the right front leg 10) and one of the pair of left and right rear legs 20 (for example, the right rear leg 20).

In this case, when the legs of the folded chair 100 are opened, the user can open the legs of the chair 100 without suspending the left and right legs from the floor 5 via another member. When the legs of the folded chair 100 are unfolded, the lower portion of the left leg and the lower portion of the right leg are gradually spaced apart. At this time, the roller 35 contacts the floor 5, and while the position is moving from the folded position P1 to the leg-open position P2, the lower portion of the right leg moves rightward with the rotation of the roller 35, and the leg-open operation is promoted with the rotation of the roller 35. By performing such an operation, the legs of the chair 100 can be opened. In this case, the roller 35 may be provided on the other of the pair of left and right front legs 10 (for example, the left front leg 10) and the pair of left and right rear legs 20 (for example, the left rear leg 20).

In the above embodiment, the rear portion 70a of the backrest 70 is an example of the pressing portion of the present invention. However, the pressing portion is not limited to the rear portion 70a of the backrest 70, and may be provided directly or indirectly on the front leg 10 or may be rotated in conjunction with the front leg 10. For example, the pressing portion of the present invention may be the operation handle 80, the connection frame 15, the rear portion of the seat 50, or the rear portion of the armrest 90.

In the above embodiment, the operation handle 80 is provided behind the backrest 70, and the position of the operation handle is not particularly limited. For example, the operating handle 80 may be provided on the back surface of the seat 50.

In the above embodiment, the roller 35 is attached to the lower portion of the front leg 10 via the rotation shaft 36a, the roller bracket 36, and the front antiskid cap 33. The roller 35 cannot be easily detached from the lower portion of the front leg 10 and the front-side nonskid cap 33. However, the roller 35 may be detachably provided to the lower portion of the front leg 10.

Fig. 13 and 14 are a perspective view and a front sectional view of another embodiment of cap 233, roller cover 240, and roller 235, respectively. Fig. 13 is a front view of cap 233, roller cover 240, and roller 235 viewed obliquely from the left lower side. Fig. 15 is a perspective view of cap 233. Fig. 16 and 17 are a side view and an exploded perspective view of roller cover 240, respectively. As shown in fig. 13, the roller 235 is detachably provided to the lower portion of the front leg 10 via the roller cover 240 and the cap 233.

Here, the cap 233 covers the lower portion of the front leg 10 from below. As shown in fig. 15, a fitting space 234 recessed upward from the bottom surface is formed in the cap 233. In the present embodiment, the bottom surface of the cap 233 is open, and a fitting space 234 is formed inside the cap 233. The fitting space 234 is connected to an opening in the bottom surface of the cap 233. The cap 233 is formed of an elastomer. The elastomer is, for example, rubber. The cap 233 is made of rubber, for example.

As shown in fig. 14, roller cover 240 is detachably fitted into fitting space 234 of cap 233 from below. The roller cover 240 has a shape matching the fitting space 234. In the roller cover 240, the rollers 235 are rotatably housed such that the lower ends of the rollers 235 are exposed downward from the roller cover 240. In the present embodiment, as shown in fig. 17, the roller cover 240 includes two members, i.e., a pair of left and

right covers

240a and 240 b. However, the roller cover 240 may be formed of one member, or may be formed of three or more members.

In the present embodiment, the left end of the right cover 240b is attached to the right end of the left cover 240 a. As shown in fig. 14, when the left cover 240a and the right cover 240b are assembled, a cover space 241 may be formed inside. In addition, when the left cover 240a and the right cover 240b are assembled, the bottom is opened and the cover space 241 is connected to the opening of the bottom.

In the present embodiment, a rotary shaft 245 is provided in the roller cover 240. The roller 235 is inserted into the rotation shaft 245. The roller 235 rotates about the rotation shaft 245. The rotating shaft 245 is disposed in the cover space 241 and extends in the left-right direction. Here, the rotary shaft 245 is integrally formed with the right cover 240b, and extends from the right cover 240b to the left cover 240 a. The rotary shaft 245 may be integrally formed with the left cover 240a, or may be separate from the left cover 240a and the right cover 240 b.

In the present embodiment, as shown in fig. 15, a concave portion 251 is formed on the inner peripheral surface of the cap 233. As shown in fig. 14, two recesses 251 are formed in the inner peripheral surface of cap 233, and the number of recesses 251 is not particularly limited, and may be one, or three or more. Here, the two recesses 251 face each other. One recess 251 is formed in the lower left portion of the inner circumferential surface of the cap 233, and the other recess 251 is formed in the lower right portion of the inner circumferential surface of the cap 233.

A convex portion 252 that fits into the concave portion 251 is formed on the outer peripheral surface of the roller cover 240. The convex portion 252 protrudes from the outer circumferential surface of the roller cover 240. The number of convex portions 252 is not particularly limited, and is, for example, two as many as the number of concave portions 251. One convex portion 252 is formed at a lower portion of the outer peripheral surface of the left cover 240a of the roller cover 240. The other convex portion 252 is formed at a lower portion of the outer peripheral surface of the right cover 240b of the roller cover 240. In the present embodiment, when roller cover 240 is fitted into fitting space 234 of cap 233, convex portion 252 is fitted into concave portion 251.

In the present embodiment, the concave portion 251 is formed on the inner peripheral surface of the cap 233, and the convex portion 252 is formed on the outer peripheral surface of the roller cover 240, but the position of the concave portion 251 and the position of the convex portion 252 may be reversed. That is, concave portion 251 may be formed on the outer circumferential surface of roller cover 240, and convex portion 252 may be formed on the inner circumferential surface of cap 233.

In the present embodiment, as shown in fig. 16, a groove 255 is formed in a lower portion of the outer peripheral surface of the roller cover 240. The number and position of the grooves 255 are not particularly limited. Here, two grooves 255 are formed in the roller cover 240. Specifically, one groove 255 is formed in the front lower portion of the outer peripheral surface of roller cover 240, and the other groove 255 is formed in the rear lower portion of the outer peripheral surface of roller cover 240. Here, as shown in fig. 17, one groove 255 formed in the front lower portion of roller cover 240 is formed from left cover 240a to right cover 240 b. Although not shown, another groove 255 formed in the rear lower portion of the roller cover 240 is also formed from the left cover 240a to the right cover 240 b. However, the two grooves 255 may be formed only in one of the left cover 240a and the right cover 240 b. A removal tool (not shown), such as a straight screwdriver, may be inserted into the slot 255.

For example, when detaching the roller cover 240 from the cap 233, the above-described detaching tool is first inserted between the roller cover 240 and the cap 233 from below. Then, the removal tool is pushed upward, and the tip of the removal tool is inserted into the groove 255. Thereafter, in a state where the tip end of the removal tool is inserted into the groove 255, the tip end is moved downward to push out the roller cover 240 downward. As a result, the roller cover 240 can be detached from the cap 233.

As described above, in the present embodiment, as shown in fig. 13, the roller 235 is detachably provided at the lower portion of the front leg 10 of the chair for bathroom. The bathroom chair is a chair that can be used in a bathroom, and for example, dirt such as scale and hair is likely to adhere to the inside of the cap 233 and the roller 235. However, since the roller 235 can be easily detached from the front leg 10, the dust attached to the cap 233 and the roller 235 can be easily removed, and the cap 233 and the roller 235 can be easily cleaned.

In the present embodiment, roller 235 can be attached to cap 233 via roller cover 240. Further, the rollers 235 are rotatably housed in the roller housing 240. By providing such a cap 233 and roller cover 240, the roller 235 can be detachably provided at the lower portion of the front leg 10, and can be rotated in a state of being provided at the lower portion of the front leg 10.

In the present embodiment, as shown in fig. 15, a concave portion 251 is formed on the inner peripheral surface of cap 233, and as shown in fig. 16, a convex portion 252 fitted into concave portion 251 is formed on the outer peripheral surface of roller cover 240. Accordingly, when the roller cover 240 is fitted into the cap 233, the concave portion 251 and the convex portion 252 are fitted to each other, and the vertical movement of the roller cover 240 is further restricted. Thus, roller cover 240 is less likely to fall from cap 233.

In the present embodiment, a groove 255 is formed in a lower portion of the outer peripheral surface of the roller cover 240. Thus, the roller cover 240 and the roller 235 can be removed from the cap 233 by inserting the tip of a removal tool such as a straight screwdriver into the groove 255. Thus, the roller cover 240 and rollers 235 are easily removed from the cap 233 using a removal tool.

Claims

1. A chair for a bathroom, comprising:

a first leg,

A second leg having a lower portion disposed at a position distant from the lower portion of the first leg, and

a moving mechanism relatively approaching or separating a lower portion of the first leg to or from a lower portion of the second leg,

when the positions of the first leg and the second leg when the lower portion of the first leg is close to the lower portion of the second leg are taken as a folded position and the positions of the first leg and the second leg when the lower portion of the first leg is far from the lower portion of the second leg are taken as an opened leg position,

a non-slip part is provided at a lower part of either one of the first leg and the second leg, the non-slip part is in contact with the ground when in the folded position and the leg-opened position, and sliding resistance with the ground is first resistance,

a sliding portion that comes into contact with the ground when in the folded position and has a second resistance smaller than the first resistance against sliding on the ground is provided at a lower portion of the other of the first leg and the second leg.

2. The bathroom chair according to claim 1,

the first leg is a front leg,

the second leg is a rear leg,

the moving mechanism is configured to couple the first leg and the second leg to each other so as to be relatively rotatable.

3. The bathroom chair according to claim 1,

and a second anti-slip portion that is provided on a lower portion of either the first leg or the second leg, does not contact the ground surface in the folded position, contacts the ground surface in the leg-open position, and has a third resistance greater than the second resistance against sliding with respect to the ground surface.

4. The bathroom chair according to claim 3,

the sliding portion is configured not to contact the ground when the leg is in the open position.

5. The bathroom chair according to claim 3,

in the folded position, the other anti-slip portion is disposed above a lower end of the sliding portion.

6. The bathroom chair according to claim 3,

the sliding portion is disposed above a lower end of the other anti-slip portion in the leg-open position.

7. The bathroom chair according to claim 1,

the sliding portion is a roller provided rotatably with respect to a lower portion of the other of the first leg and the second leg.

8. The bathroom chair according to claim 7,

the roller is detachably provided to a lower portion of the other of the first leg and the second leg.

9. The bathroom chair according to claim 8, comprising:

a cap covering a lower portion of any one of the first leg and the second leg and having a fitting space recessed upward from a bottom surface; and

and a roller cover which is detachably fitted into the fitting space of the cap and rotatably accommodates the roller so that a lower end of the roller is exposed downward.

10. The bathroom chair according to claim 9,

a concave portion is formed on either one of the inner peripheral surface of the cap or the outer peripheral surface of the roller cover,

a convex portion that fits into the concave portion is formed on the other of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover.

11. The bathroom chair according to claim 9,

the cap is formed of an elastomer and,

a groove is formed in a lower portion of an outer peripheral surface of the roller shell.

12. The bathroom chair according to claim 1,

at least the surface of the non-slip portion that contacts the ground is formed of rubber.

13. The bathroom chair according to claim 1,

the sliding part is arranged at the lower part of the front leg,

the antiskid part is arranged at the lower part of the rear leg.

14. The bathroom chair according to claim 13,

the sliding part is arranged on the front side of the lower part of the front leg.

15. The bathroom chair according to claim 13,

a pressing portion provided directly or indirectly on the front leg so as to be disposed behind the moving mechanism in a side view in the folded position and in the leg-open position,

the pressing portion is configured to be separated from a lower portion of the front leg with respect to a lower portion of the rear leg by applying a downward force.

16. The bathroom chair according to claim 1,

the contact area of the sliding part in the folded position relative to the ground is a first area,

the sliding part in the leg opening position has a contact area with respect to the ground surface of a second area smaller than the first area.