JP2020006141A - Bathroom chair - Google Patents

Abstract

To facilitate opening legs of a bathroom chair in a folded state.SOLUTION: A bathroom chair 100 comprises a front leg 10, a rear leg 20, and a rotary mechanism 30 relatively rotatably connecting the front leg 10 and the rear leg 20. A position after relatively rotating the front leg 10 and the rear leg 20 so as to make the lower part of the front leg 10 and the lower part of the rear leg 20 come close to each other is a folding position P1, and a position after relatively rotating the front leg 10 and the rear leg 20 so as to separate the lower part of the front leg 10 and the lower part of the rear leg 20 from each other is a leg opening position P2. One of the lower parts of the front leg 10 and the rear leg 20 is provided with an antislip part 37 coming into contact with a floor 5 in the folding position P1 and the leg opening position P2, and having skid resistance to the floor 5 as first resistance. The other of the lower parts of the front leg 10 and the rear leg 20 is provided with a slide part 35 coming into contact with the floor 5 in the folding position P1, and having skid resistance to the floor 5 as second resistance smaller than the first resistance.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a bathroom chair.

  For example, Patent Literature 1 discloses a foldable bathroom chair. The bathroom chair includes a pair of left and right front legs, a pair of left and right rear legs, a connector for connecting the front and rear legs so as to be relatively rotatable, and a backrest. The upper ends of the pair of left and right front legs are connected by a connection frame, and the connection frame is provided with a backrest. Further, leg rubbers are attached to the lower ends of the front legs and the rear legs to prevent the front legs and the rear legs from slipping on the floor.

  In the bathroom chair with the legs opened, the bathroom chair can be folded by relatively rotating the front leg and the rear leg around the connecting member so that the lower portion of the front leg and the lower portion of the rear leg approach each other. On the other hand, in the folded bathroom chair, the bathroom chair can be opened by relatively rotating the front leg and the rear leg around the connecting tool so that the lower portion of the front leg and the lower portion of the rear leg are separated from each other. it can.

Patent No. 5905928

  By the way, in the bathroom chair disclosed in Patent Document 1, when the folded bathroom chair is opened, the user brings the rubber feet of the rear legs into contact with the floor and the rubber feet of the front legs from the floor. After tilting the bathroom chair backward so that it floats, press the upper end of the backrest downward. As a result, the connecting frame rotates downward, and the lower part of the front leg rotates upward. As a result, the lower part of the front leg is separated from the lower part of the rear leg, and the bathroom chair can be opened. However, when the bathroom chair is opened, it is necessary to float the leg rubber of the front leg once, so that when the bathroom chair is opened, a troublesome operation for the user has occurred.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bathroom chair that can easily open a folded bathroom chair.

  Hereinafter, "the front legs and the rear legs are floating above the floor" means that the rubber feet provided at the lower part of each of the front legs and the rear legs are floating above the floor. "Contacting" means that rubber feet or the like provided below each of the front leg and the rear leg are in contact with the floor. The inventor of the present application raises both the front leg and the rear leg from the floor, for example, by moving the lower portion of the front leg and the lower portion of the rear leg closer and away from each other, for a bathroom chair to be folded or opened. Without any considerations, various studies were made on the configuration for opening the bathroom chair. In view of this, the present inventor first proposed that in the bathroom chair disclosed in Patent Literature 1, when the rubber feet of the front legs and the rear legs are in contact with the floor, the rubber feet play the role of preventing slippage. Discovered that it was difficult to separate the lower part of the front legs from the lower part of the rear legs. Then, as a result of further study, the inventor of the present application provided a slippery member at the lower end of one of the front leg and the rear leg with respect to the floor, so that the front leg and the rear leg of the folded bathroom chair were on the floor. It has been found that it is easy for the lower part of the front leg and the lower part of the rear leg to separate from each other when in contact with the vehicle.

  A bathroom chair according to the present invention includes a first leg, a second leg, and a moving mechanism. The lower part of the second leg is provided at a position away from the lower part of the first leg. The moving mechanism relatively moves the lower part of the first leg and the lower part of the second leg closer or farther apart. The position of the first leg and the second leg when the lower portion of the first leg and the lower portion of the second leg approach each other is a folding position, and the lower portion of the first leg and the second leg When the position of the first leg and the second leg when the lower portion of the second leg is separated from the lower leg is an open leg position, the lower portion of any one of the first leg and the second leg Is provided with a non-slip portion which comes into contact with the floor at the time of the folding position and the open leg position, and whose sliding resistance with the floor is a first resistance. A lower portion of the other of the first leg and the second leg, which is in contact with the floor when in the folded position, has a second resistance smaller than the first resistance in sliding resistance with the floor. Is provided.

  According to the bathroom chair of the present invention, the sliding portion and the non-slip portion are in contact with the floor when in the folded position. At this time, when a force is applied to the bathroom chair from above, the sliding part moves with respect to the floor, and the lower part of the first leg and the lower part of the second leg separate from each other. As a result, the bathroom chair can be in a state where the legs are opened. As described above, according to the present invention, the folded bathroom chair can be opened with the sliding portion and the non-slip portion in contact with the floor. Therefore, unlike the bathroom chair disclosed in Patent Literature 1, it is not necessary to perform an operation of once lifting the front legs off the floor, so that the folded bathroom chair can be easily opened.

  According to a preferred aspect 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 connect the first leg and the second leg so as to be relatively rotatable.

  According to the above aspect, by applying a force to the bathroom chair from above, the sliding portion moves with respect to the floor, and the front leg and the rear leg are separated so that the lower portion of the front leg and the lower portion of the rear leg are separated from each other. Mutual rotation. Therefore, the folded bathroom chair can be opened with the sliding portion and the non-slip portion in contact with the floor.

  According to a preferred aspect of the present invention, the lower portion of any one of the first leg and the second leg does not contact the floor at the folding position, and does not contact the floor at the open position. And a second non-slip portion that is in contact with the floor and has a third resistance that is higher than the second resistance in sliding resistance with the floor.

  According to the above aspect, at the folded position, of the first leg and the second leg, the leg provided with the sliding portion contacts the floor via the sliding portion, and the other non-slip portion contacts the floor. I haven't. Therefore, it is easy to open the folded bathroom chair. When the leg is in the open position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the floor via another non-slip portion. Therefore, when the user sits on the bathroom chair with the legs opened, the bathroom chair can be made hard to slip on the floor.

  According to another preferred aspect of the present invention, the sliding portion is configured so as not to contact the floor when in the open position.

  According to the above aspect, at the open position, one of the first leg and the second leg provided with the sliding portion is in contact with the floor via another sliding portion, and the sliding portion is on the floor. Is not in contact. Therefore, when the user sits on the bathroom chair with the legs opened, the bathroom chair can be made more difficult to slip on the floor.

  According to another preferred aspect of the present invention, when in the folded position, the other non-slip portion is disposed above a lower end of the slide portion.

  According to the above aspect, at the folded position, of the first leg and the second leg, the leg provided with the sliding portion contacts the floor via the sliding portion, and the other non-slip portion contacts the floor. I haven't. Therefore, when the folded bathroom chair is opened, the lower part of the first leg and the lower part of the second leg are easily separated while the sliding part is in contact with the floor. Therefore, it is easy to open the bathroom chair.

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

  According to the above aspect, when the leg is in the open position, the leg provided with the sliding portion of the first leg and the second leg is in contact with the floor via the other non-slip portion, and the sliding portion is No contact with floor. Therefore, when the user sits on the bathroom chair, the bathroom chair can be made hard to slip on the floor.

  According to another preferred aspect of the present invention, the sliding portion is a roller provided rotatably with respect to the lower portion of one of the first leg and the second leg.

  According to the above aspect, when in the folded position, the roller of one of the first leg and the second leg is in contact with the floor. Therefore, when the folded bathroom chair is opened, the roller rotates with respect to the floor, so that the lower part of the first leg and the lower part of the second leg are easily separated from each other.

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

  The bathroom chair is used in a bathroom, and dust such as water scale and hair easily adheres to the roller, for example. However, in the above aspect, the roller can be easily removed from the lower portion of one of the first leg and the second leg. Therefore, dust attached to the cap is easily removed, and the cap is easily cleaned.

  According to another preferred aspect of the present invention, the bathroom chair covers a lower portion of one of the first leg and the second leg and is recessed upward from a bottom surface. And a roller cover removably fitted into the fitting space of the cap so that the lower end of the roller is exposed downward so that the roller is rotatably housed. .

  According to the above aspect, it is possible to attach the roller to the cap via the roller cover. Further, the roller is rotatably accommodated in the roller cover. Therefore, by providing such a cap and a roller cover, a roller can be removably provided below either one of the first leg and the second leg, and the first leg and the second leg can be provided. The roller can be made rotatable in a state where it is provided at the lower part of one of the other legs.

  According to another preferred aspect of the present invention, a concave portion is formed on one of an inner peripheral surface of the cap and an outer peripheral surface of the roller cover. A convex portion that fits into the concave portion is formed on one 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 in a fitted state, and the vertical movement of the roller cover is further restricted. Therefore, the roller cover does not easily fall from the cap.

  According to another preferred aspect of the present invention, the cap is formed of an elastic body. A groove is formed in a lower portion of the outer peripheral surface of the roller cover.

  According to the above aspect, the tip of a removal tool such as a flathead 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 of the removal tool inserted into the groove. Therefore, it is easy to remove the roller cover and the roller housed in the roller cover from the cap by using a removal tool.

  According to another preferred aspect of the present invention, at least a surface of the non-slip portion that comes into contact with the floor is formed of rubber.

  Rubber is a material that does not easily slip on the floor. Therefore, by forming at least the surface of the non-slip portion that is in contact with the floor with rubber, a non-slip portion that is hard to slip on the floor can be manufactured.

  According to another preferred aspect of the present invention, the sliding portion is provided at a lower portion of the front leg. The non-slip portion is provided below the rear leg.

  For example, a bathroom chair may be used with the back facing the wall and close to the wall. In such a case, the folded bathroom chair is placed with its back to the wall and close to the wall, and a force is applied to the bathroom chair from above. At this time, the bathroom chair can be opened by moving forward so that the lower part of the front leg is separated from the lower part of the rear leg. Therefore, it is easy to turn the legs of the folded bathroom chair with the back turned to the wall and close to the wall.

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

  According to the above aspect, the portion on the front side of the lower end of the front leg at the time of the open position is located at the lowermost end of the front leg at the time of the folding 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 in the folded position.

  According to another preferred aspect of the present invention, the bathroom chair is directly or indirectly attached to the front leg so as to be disposed rearward of the rotation mechanism in a side view at the time of the folding position and the open leg position. It is provided with a depressing portion provided in a specific manner. The press-down portion is configured to separate a lower portion of the front leg from a lower portion of the rear leg by applying a downward force.

  According to the above aspect, even when a relatively small force from above is applied to the push-down portion, the force causes the lower portion of the front leg to move forward so as to separate from the lower portion of the rear leg. Easy to do. Therefore, the bathroom chair can be opened with relatively small force.

  According to another preferred aspect of the present invention, the contact area of the sliding portion with the floor at the folding position is a first area. The contact area of the sliding portion with the floor at the open position is a second area smaller than the first area.

  According to the above aspect, when the folded bathroom chair is opened, the contact area between the sliding portion and the floor is large, so that the leg provided with the sliding portion out of the front leg and the rear leg can be easily moved. In addition, when the leg is in the open position, the contact area between the sliding portion and the floor is small, so that the bathroom chair can be made difficult to slide on the floor.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a bathroom chair in which a folded bathroom chair can be easily opened.

It is a perspective view of the bathroom chair which concerns on embodiment. It is a front view of the bathroom chair. It is a rear view of the bathroom chair. It is a top view of a bathroom chair. It is a left view which shows the state which opened the leg of the bathroom chair. It is a left view which shows the folded state of the bathroom chair. It is a perspective view of the bathroom chair. It is a perspective view of the bathroom chair. It is a left view which shows a front non-slip cap and a roller in a leg-spread position. It is a left view which shows a front non-slip cap and a roller in a folding position. In another embodiment, it is a left view which shows the front side non-slip cap in an open position. In another embodiment, it is a left view which shows the front side non-slip cap in a folding position. FIG. 9 is a perspective view of a cap, a roller cover, and a roller according to another embodiment. It is a front sectional view of a cap, a roller cover, and a roller concerning other embodiments. It is a perspective view of a cap concerning other embodiments. It is a side view of a roller cover and a roller concerning another embodiment. FIG. 10 is an exploded perspective view of a roller cover according to another embodiment.

  Hereinafter, a bathroom chair according to the present invention will be described with reference to the drawings. The embodiment described below is merely an embodiment of the present invention, and is not intended to limit the present invention.

<Embodiment>
FIG. 1 is a perspective view of a bathroom chair 100 according to the present embodiment. In the following description, front, rear, left, right, upper, and lower mean front, rear, left, right, upper, and lower, respectively, as viewed from a user sitting on the bathroom chair 100. Symbols F, Rr, L, R, U, and D in the drawings represent front, rear, left, right, upper, and lower, respectively. However, these directions are merely directions for convenience of description, and do not limit the mode of the bathroom chair 100 at all.

  Hereinafter, the bathroom chair 100 will be simply referred to as the chair 100. The chair 100 according to the present embodiment is foldable. The chair 100 is mainly used in a bathroom. The chair 100 is used, for example, when an elderly person or a care recipient takes a shower in a bathroom. However, the use place of the chair 100 is not limited to the bathroom, and the use target of the chair 100 is not limited to the elderly or the care recipient.

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

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

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

  In the following description, the position of each part and component indicates the position where the chair 100 is in the open position unless otherwise specified. As shown in FIG. 2, the front legs 10 are in the form of pipes provided in pairs 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 symmetrical shapes. As shown in FIG. 5, the front leg 10 includes a lower front leg 11 extending obliquely forward and downward, and an upper front leg 12 extending obliquely upward and rearward from the lower front leg 11. In this embodiment, the lower part of the front leg 10 refers to the lower front leg 11.

  The front leg 10 is extendable and contractible, and its length can be adjusted. Although not shown, the front leg 10 is composed of a front leg upper pipe portion and a front leg lower pipe portion into which the front leg upper pipe portion is slidably inserted. The length of the front leg 10 can be adjusted by adjusting the insertion length of the upper front leg pipe portion into the lower front leg pipe portion.

  In this embodiment, as shown in FIG. 3, the left and right front legs 10 are connected to each other by a connection frame 15. As shown in FIG. 5, the connecting 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, and a left vertical frame 16 and a right vertical frame 16 as shown in FIG. And a horizontal frame 17 spanned between the vertical frame 16. Note that the pair of left and right front legs 10 and the connection frame 15 may be separate bodies or may be integrated.

  As shown in FIG. 5, the rear leg 20 is provided at a position where the lower portion is separated from the lower portion of the front leg 10 (here, a position separated rearward). In a side view, at least a part (the lower part in the present embodiment) of the rear leg 20 is arranged behind the front leg 10. As shown in FIG. 3, the rear leg 20 is a pipe-shaped member provided in a pair 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 left-right symmetric shapes. 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 upward and forward from the lower rear leg 21. In the present embodiment, the lower portion of the front leg 20 refers to the lower front leg 21.

  Like the front leg 10, the rear leg 20 is also extendable and contractible, and its length can be adjusted. Although not shown, the rear leg 20 includes a rear leg upper pipe portion and a rear leg lower pipe portion into which the rear leg upper pipe portion is slidably inserted. The length of the rear leg 20 can be adjusted by adjusting the insertion length of the rear leg upper pipe portion into the rear leg lower 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 connected to each other via a rotation mechanism 30 so as to be rotatable with each other. The rotating mechanism 30 is an example of the moving mechanism of the present invention, and relatively moves the lower part of the front leg 10 and the lower part of the rear leg 20 toward or away from each other. Here, the rotation mechanism 30 is a mechanism that connects the front leg 10 and the rear leg 20 and rotates the front leg 10 and the rear leg 20 mutually. The configuration of the rotation mechanism 30 is not particularly limited. In the present embodiment, the rotation mechanism 30 has a connection shaft 31. In the present embodiment, as shown in FIG. 2, the front leg 10 and the rear leg 20 are provided in a pair on the left and right, respectively, so the pair of connecting shafts 31 are also provided on the left and right. The connecting shaft 31 is a member extending in the left-right direction, and connects 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. The front leg 10 is rotatable with respect to the rear leg 20 about the connection shaft 31, and the rear leg 20 is rotatable with respect to the front leg 10 about the connection shaft 31. In the present embodiment, the lower portion of the lower front leg 11 of the front leg 10 (hereinafter, also simply referred to as the lower portion of the front leg 10) and the lower portion of the lower leg 21 of the rear leg 20 (hereinafter, also simply referred to as the lower portion of the rear leg 20). The chair 100 can be folded as shown in FIG. 6 by relatively rotating the front leg 10 and the rear leg 20 so that the two approach each other. Conversely, by relatively rotating the front leg 10 and the rear leg 20 so that the lower portion of the front leg 10 and the lower portion of the rear leg 20 are separated from each other, the chair 100 can be opened as shown in FIG.

  In the present embodiment, as shown in FIG. 6, when the lower part of the front leg 10 and the lower part of the rear leg 20 approach, in other words, the lower part of the front leg 10 and the lower part of the rear leg 20 approach each other. The position of the front leg 10 and the rear leg 20 after the and the rear leg 20 have been rotated mutually is referred to as a folded position P1. The folding position P1 is a position where the chair 100 is folded. As shown in FIG. 5, when the lower part of the front leg 10 and the lower part of the rear leg 20 are separated, in other words, the front leg 10 and the rear leg are separated so that the lower part of the front leg 10 and the lower part of the rear leg 20 are separated. The positions of the front leg 10 and the rear leg 20 after the rotation of the front leg 20 and the rear leg 20 are referred to as a leg opening position P2. The split position P2 is a position where the chair 100 is split.

  As shown in FIGS. 5 and 6, the front leg 10 and the rear leg 20 intersect at the folding position P1 and the open leg position P2. As shown in FIG. 6, at the folding position P1, the axis A11 of the lower front leg 11 of the front leg 10 is inclined forward and obliquely upward from the vertical direction, and the axis A12 of the upper front leg 12 is inclined rearward and upward from the axis A11. Extending. However, at the folding position P1, the axis A11 of the lower front leg 11 may extend in the vertical direction. At the folding position P1, the axis A21 of the lower rear leg 21 of the rear leg 20 is inclined obliquely rearward and upward from the vertical direction, and the axis A22 of the upper rear leg 22 extends obliquely forward and upward from the axis A21. A part of the axis A22 is bent. At the folded position P1, the axis A21 of the lower rear leg 21 may extend in the vertical direction.

  As shown in FIG. 5, at the open leg 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 A11. Also, at the open leg 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 A21. For example, when the distance between the lower rear end of the front leg 10 at the folding position P1 and the lower front end of the rear leg 20 is a first distance D1 (see FIG. 6), the lower position of the front leg 10 at the open position P2 is obtained. The distance between the rear end and the lower front end of the rear leg 20 is a second distance D2 (see FIG. 5) longer than the first distance D1. By rotating the front leg 10 and the rear leg 20 relatively, the position of the front leg 10 and the rear leg 20 is changed from the folded position P1 to the open leg position P2, or from the open leg position P2 to the folded position P1. Can be.

  In the present embodiment, as shown in FIG. 5, a front side non-slip cap 33, which is an example of another non-slip portion, and a roller 35, which is an example of a slip portion of the present invention, are provided below the front leg 10. Is provided. At the lower end of the rear leg 20, a rear non-slip cap 37 which is an example of the non-slip member of the present invention is provided.

  FIG. 9 is a left side view showing the front-side non-slip cap 33 and the roller 35 at the leg opening position P2. FIG. 10 is a left side view showing the front non-slip cap 33 and the roller 35 at the folding position P1. As shown in FIG. 9, the front non-slip cap 33 is a member that covers a lower portion of the lower front leg 11 of the front leg 10. The front-side non-slip cap 33 is separate from the front leg 10 in the present embodiment, but a part or the whole may be formed integrally with the front leg 10. Here, the front side non-slip cap 33 does not come into contact with the floor 5 at the folding position P1 as shown in FIG. 10, but comes into contact with the floor 5 at the open leg position P2 as shown in FIG. Is configured. Here, the surface of the front non-slip cap 33 that comes into contact with the floor 5 at the leg opening position P2 is referred to as a contact surface 33a. As shown in FIG. 10, at the folded position P <b> 1, the contact surface 33 a of the front-side non-slip cap 33 extends obliquely rearward and upward without contacting the floor 5. In other words, at the folding position P1, the contact surface 33a is gradually separated from the floor 5 from the front end toward the rear end. At this time, the front end of the contact surface 33a is not in contact with the floor 5.

  The contact area of the front-side non-slip cap 33 with the floor 5 is the first front-side non-slip area at the folding position P1 in FIG. 10 and the second front-side non-slip area at the open leg position P2 in FIG. It is. The first front non-slip area includes “0”. Here, the first front non-slip area is smaller than the second front non-slip area.

  The rollers 35 assist the legs of the front leg 10 and the rear leg 20 when the chair 100 is opened. The roller 35 is rotatably provided on the front leg 10. The roller 35 is provided on the front side below the front leg 10. Here, a roller bracket 36 is provided on the front side of the lower part of the front leg via a front side non-slip cap 33. The roller bracket 36 may be separate from the front-side non-slip cap 33, or may be integrated with the front-side non-slip cap 33. A rotating shaft 36 a extending in the left-right direction is rotatably attached to the roller bracket 36. The roller 35 is attached to the rotation shaft 36a, and rotates together with the rotation shaft 36a. As described above, the roller 35 is indirectly provided on the lower front leg 11 of the front leg 10 via the rotation shaft 36 a, the roller bracket 36, and the front side non-slip cap 33. However, the roller 35 may be directly provided rotatably below the front leg 10.

  As shown in FIG. 10, the roller 35 is configured to contact the floor 5 at the folding position P1. In the present embodiment, as shown in FIG. 9, the roller 35 is configured so as not to contact the floor 5 at the open position P2, but is in contact with the floor 5 at the open position P2. Is also good. As shown in FIG. 10, at the folding position P <b> 1, the front-side non-slip 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 33 a of the front-side non-slip cap 33. Therefore, at the folding position P1, the contact surface 33a is in a state of floating from the floor 5. As shown in FIG. 9, at the time of the leg open position P <b> 2, the roller 35 is disposed above the lower end (here, the contact surface 33 a) of the front-side non-slip cap 33. Therefore, at the time of the leg open position P <b> 2, the roller 35 is in a state of floating from the floor 5. Here, the roller 35 is in contact with the floor 5 while the position is being changed from the folding position P1 to the open leg position P2.

  The contact area of the roller 35 with the floor 5 is the first roller contact area at the folded position P1 in FIG. 10 and the second roller contact area at the open leg position P2 in FIG. Note that the second roller contact area includes “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 non-slip cap 37 is a member that covers a lower portion of the lower rear leg 21 of the rear leg 20. The rear non-slip cap 37 is separate from the rear leg 20 and is attached to the lower rear leg 21. However, part or all of the rear-side non-slip cap 37 may be formed integrally with the rear leg 20. The rear non-slip cap 37 is in contact with the floor 5 at the folding position P1 and the open leg position P2, as shown in FIGS. Here, at least part of the rear-side non-slip cap 37 is in contact with the floor 5 while the position is being changed from the folding position P1 to the open leg position P2.

  In the present embodiment, as shown in FIG. 5, the entire bottom surface of the rear non-slip cap 37 is in contact with the floor 5 at the open leg position P2. Here, the surface of the rear non-slip cap 37 that comes into contact with the floor 5 at the leg opening position P2 is referred to as a contact surface 37a. As shown in FIG. 6, at the folded position P1, the contact surface 37a of the rear non-slip cap 37 extends obliquely forward and upward. In other words, at the folding position P1, the contact surface 37a is gradually separated from the floor 5 from the rear end toward the front end. At the folding position P1, at least the rear end of the contact surface 37a is in contact with the floor 5.

  The contact area of the rear non-slip cap 37 with the floor 5 is the first rear non-slip area at the folded position P1 in FIG. 6 and the second rear non-slip area at the open leg position P2 in FIG. Non-slip area. Here, the first rear non-slip area is smaller than the second rear non-slip area.

  In this embodiment, the sliding resistance of the rear non-slip cap 37 with respect to the floor 5 is the first resistance. The sliding resistance of the roller 35 with respect to the floor 5 is a second resistance. The sliding resistance of the front non-slip cap 33 with respect to the floor 5 is a third resistance. Here, the “slip resistance” refers to a resistance generated between the chair 5 and the floor 5 when a downward force is applied to the chair 100. The “slip resistance” includes resistance generated when the member is rotating with respect to the floor 5 as well as resistance generated when the member is sliding with respect to the floor 5. In the present embodiment, the second resistance of the roller 35 is smaller than the first resistance of the rear non-slip cap 37 and smaller than the third resistance of the front non-slip cap 33. Further, the first resistor is the same as the third resistor. Here, the fact that the first resistor and the third resistor are the same is assumed to include some error. Note that the first resistance may be larger or smaller than the third resistance.

  The contact surface 33a of the front-side non-slip cap 33 and the contact surface 37a of the rear-side non-slip cap 37 are formed of rubber. In the present embodiment, the entire front side non-slip cap 33 and the entire rear side non-slip cap 37 are formed of rubber. However, the material for forming the front non-slip cap 33 and the rear non-slip cap 37 is not limited to rubber. The part other than the contact surface 33a of the front-side anti-skid cap 33 and the part other than the contact surface 37a of the rear-side anti-skid cap 37 may be formed of a material other than rubber. For example, a portion of the roller 35 that comes into contact with the floor 5 is formed of polypropylene. However, the portion of the roller 35 that does not come into contact with the floor 5 may be formed of polypropylene, or may be formed of a material different from polypropylene, for example, a material having a smaller sliding resistance than the front-side anti-skid cap 33.

  In the present embodiment, as shown in FIG. 8, a first support bar 41 and a first connection bar 44 are bridged between the left front leg 10 and the right front leg 10. Each of the first support bar 41 and the first connection bar 44 extends in the left-right direction, and connects the left front leg 10 and the right front leg 10. The first support bar 41 is disposed diagonally above and behind the first connection bar 44, and is configured to support the seat 50 when the chair 100 is open. The first support bar 41 is connected to the upper front leg 12 of the front leg 10. The first connection bar 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 bar 42 and a second connection bar 45 are bridged between the left rear leg 20 and the right rear leg 20. Each of the second support bar 42 and the second connection bar 45 extends in the left-right direction, and connects the left rear leg 20 and the right rear leg 20. The second support bar 42 is disposed obliquely above and in front of the second connection bar 45, and is configured to support the seat 50 when the chair 100 is open. The second support bar 42 is connected to the upper rear leg 22 of the rear leg 20. The second connection bar 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 left and right rear brackets 61 are provided on the back surface of the seat portion 50. The second support bar 42 is rotatably supported by the rear bracket 61. Therefore, the seat portion 50 is configured to be rotatable with respect to the rear leg 20 via the rear bracket 61 and the second support bar 42.

  A pair of left and right front brackets 62 are provided on the back surface of the seat 50 in addition to the rear bracket 61. The front bracket 62 is located forward of the rear bracket 61 and is located closer to the center in the left-right direction than the rear bracket 61. A connection shaft 63 extending in the left-right direction is attached to the front bracket 62.

  In the present embodiment, the connecting shaft 63 attached to the front bracket 62 and the first connecting bar 44 are connected by a link 66. Since the connection shaft 63 is provided in a pair on the left and right, the link 66 is also provided in a pair on the left and right. The link 66 is used to rotate the seat 50 with respect to the rear leg 20 and the front leg around the connecting shaft 31 of the rotation mechanism 30 when the chair 100 being opened is folded and when the folded chair 100 is opened. This is a member for linking the relative rotation between the rear leg 10 and the rear leg 20.

  In the present embodiment, as shown in FIG. 7, a pair of left and right supported portions 64 is 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 back surface of the seat portion 50. The supported portion 64 is configured to be in contact with the first support bar 41 when the chair 100 is opened and to be supported by the first support bar 41. Therefore, when the chair 100 is opened, the seat portion 50 is supported by the front leg 10 via the supported portion 64 and the first support bar 41.

  Further, at the open position P <b> 2 in FIG. 5, a part 22 a of the upper rear leg 22 of the rear leg 20 is separated downward from the seat 50. Here, this portion is referred to as a separation portion 22a. A reinforcing member 65 is provided on the separation portion 22a. As shown in FIG. 7, the reinforcing member 65 is configured to contact the first support bar 41 and support the first support bar 41 when the chair 100 is opened. Therefore, when the chair 100 is opened, the first support bar 41 is supported by the rear leg 20 via the reinforcing member 65.

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

  The backrest 70 is attached to the horizontal frame 17 of the connection frame 15. In the present embodiment, the backrest 70 is separate from the horizontal frame 17, but the backrest 70 and the horizontal frame 17 may be formed integrally. 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 it with one hand by inserting a finger into the hole 71 and holding the backrest 70. Here, a concave portion 72 that is concave upward is formed at a lower end portion of the backrest 70. The material of the backrest 70 is not particularly limited, but in the present embodiment, the backrest 70 is a blow molded product made of a synthetic resin. In the present embodiment, the rear portion 70a of the backrest 70 is an example of the push-down portion of the present invention. As shown in FIG. 6, at the folding position P1, the rear portion 70a of the backrest 70 is disposed behind the rotation mechanism 30 in a side view.

  As shown in FIG. 5, the operation handle 80 is used by a user to apply force when the folded chair 100 is opened or when the opened chair 100 is folded. For example, by applying a force vertically downward to the operation handle 80, the folded chair 100 can be opened. 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 horizontal frame 17 of the connection 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 operation handle 80 is provided on a shaft 82 and rotates together with the shaft 82. Here, the operation handle 80 is rotatable around an axis 82 around its front end, and the operation handle 80 can be raised and lowered. As shown in FIG. 6, at the folding position P1, the operation handle 80 is disposed behind the rotation mechanism 30 in a side view.

  In the present embodiment, the operation handle 80 is connected to a pair of left and right pins 84 (see FIG. 3) via wires (not shown). As shown in FIG. 3, the pair of left and right pins 84 is located between the upper front legs 12 of the pair of left and right front legs 10, and from the housing members 48 provided at both ends of the first support bar 41 to the center in the left and right direction. It is provided so as to be able to protrude. Hooks 49 are provided on a pair of left and right supported portions 64 provided on the back surface of the seat portion 50 at the center in the left-right direction with respect to the housing member 48. When the pin 84 protrudes from the housing member 48, it engages with the hook 49. Here, when the operation handle 80 is at the lower position, the pin 84 engages with the hook 49, and when the operation handle 80 is lifted upward, the pin 84 comes off from the hook 49. Although not shown, a spring is provided inside the pair of left and right housing members 48. The spring urges the pin 84 so as to maintain the folded state at the folded position P1, and engages the hook 49 so as to maintain the opened state at the open position P2. Is configured to bias the pin 84 as described above. Therefore, when the chair 100 is in the folded state, the state of the folded position P1 is maintained unless the operation handle 80 is operated. On the other hand, when the chair 100 is in the opened state, the state of the opened position P2 is maintained unless the operation handle 80 is operated.

  As shown in FIG. 1, the armrests 90 are attached to a pair of left and right vertical frames 16 of the connection frame 15, respectively. In the present embodiment, as shown in FIG. 4, the vertical frame 16 is provided with a bracket 18 projecting forward. The bracket 18 is provided with a horizontal shaft 19 extending in the left-right direction. The armrest 90 is rotatably attached to 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 distal end is located forward and a vertical state in which the distal end is located upward.

  The configuration of the chair 100 has been described 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 with one hand. As shown in FIG. 5, when folding the chair 100 in the opened state, first, the armrest 90 is flipped up, and the armrest 90 is changed from a horizontal state to a vertical state. Next, the backrest 70 and the operation handle 80 are grasped by hand. At this time, the operation handle 80 rotates upward, and the pin 84 (see FIG. 3) comes off the hook 49 (see FIG. 3). Next, when the backrest 70 is lifted, the seat portion 50 rotates about the first support bar 41, and the rear portion of the seat portion 50 moves upward while the front portion of the seat portion 50 moves as shown in FIG. Moves down.

  In the present embodiment, as shown in FIG. 8, the front portion of the seat portion 50 is connected to the first connection bar 44 via the link 66, so that when the front portion of the seat portion 50 moves downward, the front legs 10 Receives a rearward diagonally downward force from the link 66 and the first connecting bar 44. As a result, as shown in FIG. 6, the front leg 10 rotates about the connection shaft 31 of the rotation mechanism 30 so that the front leg 10 and the rear leg 20 approach each other. When the chair 100 is lifted, its own weight acts on the front legs 10 and the rear legs 20. Due to their own weight, the front leg 10 and the rear leg 20 relatively rotate about the connection shaft 31. When the front leg 10 and the rear leg 20 rotate relative to each other, the contact surface 33a of the front non-slip cap 33 rises from the floor 5 and at the same time, the roller 35 that has not contacted the floor 5 contacts the floor 5. At the contact surface 37a of the rear non-slip cap 37, the front end moves away from the floor 5, and when the roller 35 is in contact with the floor 5, only the rear end of the contact surface 37a is in contact with the floor 5. Become. Here, the front leg 10 easily approaches the rear leg 20 as the roller 35 rotates. When the front leg 10 and the rear leg 20 rotate relative to each other, the chair 100 is folded as shown in FIG. 6, and the chair 100 is maintained at the folded position P1.

  When the folded chair 100 is opened, the user can open the chair 100 without lifting the front leg 10 and the rear leg 20 from the floor 5 via other members. Here, first, the user places his / her hand on the rear part 70a of the backrest 70 and applies a downward downward force to the rear part 70a of the backrest 70. At this time, an operation reverse to the above-described folding operation is performed, and the front leg 10 and the rear leg 20 relatively rotate about the connection shaft 31. As a result, the lower part of the front leg 10 and the lower part of the rear leg 20 gradually separate from each other. Here, at the folding position P <b> 1 shown in FIG. 6, the rear end of the contact surface 37 a of the rear non-slip cap 37 is in contact with the floor 5. Then, as shown in FIG. 10, at the folding position P <b> 1, the contact surface 33 a of the front-side non-slip cap 33 is separated from the floor 5, and the roller 35 is in contact with the floor 5. Since the rear non-slip cap 37 is in contact with the floor 5 while the position moves from the folding position P1 to the open leg position P2, the position of the lower end of the rear leg 20 with respect to the floor 5 does not substantially change. On the other hand, while the position moves from the folding position P1 to the open leg position P2, the front slip stopper cap 33 is not in contact with the floor 5 and the roller 35 is in contact with the floor 5. Therefore, the lower part of the front leg 10 moves forward with the rotation of the roller 35, and the rotation of the roller 35 promotes the leg opening operation. By performing such an operation, as shown in FIG. 5, the chair 100 is opened, and assumes a posture like the open position P2. As shown in FIG. 9, at the open position P <b> 2, the contact surface 33 a of the front-side non-slip cap 33 is in contact with the floor 5, and the roller 35 is separated from the floor 5. It becomes hard to slip against.

  As described above, in the present embodiment, as shown in FIG. 6, the roller 35 and the rear non-slip cap 37 are in contact with the floor 5 at the folding position P1. At this time, by applying a force to the chair 100 from above, the roller 35 moves with respect to the floor 5, and the front leg 10 and the rear leg 20 are separated from each other so that the lower portion of the front leg 10 and the lower portion of the rear leg 20 are separated from each other. Rotate mutually. As a result, as shown in FIG. 5, the chair 100 can be in a state where the legs are opened. As described above, in this embodiment, the folded chair 100 can be opened with the roller 35 and the rear non-slip cap 37 in contact with the floor 5. Therefore, unlike the bathroom chair disclosed in Patent Literature 1, there is no need to perform an operation of once lifting the front legs off the floor, so that the folded chair 100 can be easily opened.

  In the present embodiment, the roller 35 is provided below the front leg 10. For example, the chair 100 may be used with the back turned to the wall and in a state of approaching the wall. In such a case, the folded chair 100 is placed with the back facing the wall and close to the wall, and a force is applied to the chair 100 from above. At this time, the chair 100 can be opened by moving the lower part of the front leg 10 forward so as to separate from the lower part of the rear leg 20. Therefore, it is easy to open the folded chair 100 with the back turned to the wall and close to the wall.

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

  In the present embodiment, as shown in FIG. 10, when in the folded position P <b> 1, the front-side non-slip cap 33 is disposed above the lower end of the roller 35. Thus, at the folded position P1, the front leg 10 contacts the floor 5 via the roller 35, and the front non-slip cap 33 does not contact the floor 5. Therefore, the folded chair 100 can be easily opened. Further, as shown in FIG. 9, the roller 35 is disposed above the lower end of the front-side non-slip cap 33 at the time of the open leg position P <b> 2. As a result, at the open leg position P2, the front leg 10 is in contact with the floor 5 via the front non-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 opened, the chair 100 can be made hard to slip on the floor 5.

  In the present embodiment, as shown in FIGS. 5 and 6, the rear portion 70a of the backrest 70 is behind the rotation mechanism 30 (specifically, the connection shaft 31) in the side view when the folding position P1 and the leg opening position P2 are in place. Is provided on the front leg 10 via the connecting frame 15 so as to be disposed at the front side. Accordingly, even when a relatively small force (for example, about 20N to 80N) is applied to the rear portion 70a of the backrest 70 from above, the front leg 10 rotates with respect to the rear leg 20 due to the force. Therefore, it is easy to move forward so that the lower part of the front leg 10 separates from the lower part of the rear leg 20. Therefore, the chair 100 can be opened with relatively small force.

  In the present embodiment, the contact area of the roller 35 with the floor 5 at the folding position P1 is the first roller contact area. The contact area of the roller 35 with the floor 5 at the open leg position P2 is a second roller contact area smaller than the first roller contact area. Accordingly, when the folded chair 100 is opened, the contact area between the roller 35 and the floor 5 is large, so that the front leg 10 can be easily moved forward. In addition, at the open leg position P2, since the contact area between the roller 35 and the floor 5 is small (here, it is 0), the chair 100 can be made difficult to slide on the floor 5.

  In the present embodiment, as shown in FIG. 10, the roller 35 is provided rotatably with respect to the lower part of the front leg 10. This makes it easy to separate the lower part of the front leg 10 and the lower part of the rear leg 20 while rotating the roller 35 on the floor 5 when the folded chair 100 is opened.

  In the present embodiment, the contact surface 33a of the front non-slip cap 33 and the contact surface 37a of the rear non-slip cap 37 are formed of rubber. The rubber is a material that does not slip easily on the floor 5. Therefore, by forming the contact surfaces 33a and 37a with rubber, it is possible to make the front-side anti-skid cap 33 and the rear-side anti-skid cap 37 that are hard to slip on the floor 5 hard to slip.

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

<Other embodiments>
In the above embodiment, the roller 35 is employed as an example of the sliding portion of the present invention, and the front leg 10 is easily moved relative to the floor 5 by the rotation of the roller 35 when the chair 100 is opened. However, the sliding portion of the present invention is not limited to the roller 35. FIG. 11 is a left side view showing the front-side non-slip cap 133 at the open leg position P2 in another embodiment. FIG. 12 is a left side view showing the front-side non-slip cap 133 at the folding position P1.

  For example, as shown in FIG. 11, the lower front leg 11 of the front leg 10 is provided with a front non-slip cap 133, and the front non-slip cap 133 has a non-slip surface 133 a and an example of a slide portion of the present invention. May be provided. In a side view, the sliding surface 135 is disposed in front of the non-slip surface 133a. As shown in FIG. 12, at the folding position P1, the non-slip surface 133a does not contact the floor 5, and the sliding surface 135 contacts the floor 5. Here, at the folding position P1, the sliding surface 135 is a surface extending in the horizontal direction, and the non-slip surface 133a extends obliquely rearward and upward from the sliding surface 135.

  As shown in FIG. 11, at the leg opening position P <b> 2, the non-slip surface 133 a is in contact with the floor 5, and the slide surface 135 is not in contact with the floor 5. Here, at the leg opening position P2, the non-slip surface 133a extends in the horizontal direction, and the slide surface 135 extends obliquely forward and upward from the non-slip surface 133a.

  In the present embodiment, the slip resistance of the non-slip surface 133a on the floor 5 is different from the slip resistance of the slip surface 135 on the floor 5. For example, the slip resistance of the rear non-slip cap 37 (see FIG. 5) with respect to the floor 5 is defined as a first resistance, the slide resistance of the slide surface 135 with respect to the floor 5 is defined as a second resistance, and the slip resistance of the non-slip surface 133a with respect to the floor 5 is determined. The slip resistance is defined as a third resistance. At this time, the second resistance of the slip surface 135 is smaller than the first resistance of the rear non-slip cap 37 and smaller than the third resistance of the non-slip surface 133a. Further, the first resistance is the same as the third resistance, but may be larger or smaller than the third resistance. The material forming the sliding surface 135 and the material forming the non-slip surface 133a may be different so that such a slip resistance relationship is obtained. In addition, the non-slip surface 133a and the slip surface 135 may be subjected to surface processing so as to have such a relationship of the slip resistance.

  Even in the present embodiment, the same effect as in the first embodiment is obtained, and the folded chair can be easily opened.

  In the above-described embodiment, the roller 35 is separated from the floor 5 at the time of the leg opening position P2. However, the roller 35 may be in contact with the floor 5 together with the contact surface 33a of the front-side non-slip cap 33 when the leg is in the open position P2.

  In the above embodiment, the front side non-slip cap 33 can be omitted. In this case, the roller 35 may be rotatably attached to the lower end of the lower front leg 11 of the front leg 10. In this case, the roller 35 is in contact with the floor 5 at both the folded position P1 and the open leg position P2. When the front non-slip cap 33 is omitted, the slip resistance between the contact surface 37a of the rear non-slip cap 37 and the floor 5 causes the chair 100 to move to the floor 5 when the user sits on the chair 100. On the other hand, it is preferable that the size is small enough to prevent slippage.

  In the above embodiment, the roller 35 is provided on the front side of the lower part 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 below the front leg 10. The roller 35 may be provided on the lower left side of the front leg 10, or may be provided on the lower right side of the front leg 10.

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

  In the above embodiment, the moving mechanism according to the present invention is the rotation mechanism 30, and the rotation mechanism 30 relatively rotates the front leg 10 and the rear leg 20, thereby opening or folding the chair 100. Was. However, the moving mechanism according to the present invention relatively slides the lower part of the front leg 10 and the lower part of the rear leg 20 by sliding the lower part of the front leg 10 relative to the lower part of the rear leg 20. It may be configured as follows.

  In the above embodiment, the chair 100 is opened or folded by relatively rotating the front leg 10 and the rear leg 20. However, by moving the lower part of the left leg (that is, the left front leg 10 and the left hind leg 20) and the lower part of the right leg (that is, the right front leg 10 and the right hind leg 20) close and away from each other, the chair 100 is moved. The legs may be opened or folded. At this time, the moving mechanism (the rotating mechanism 30 in the above embodiment) of the present invention is configured to relatively move the lower part of the left leg and the lower part of the right leg toward or away from each other. 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. In this case, the moving mechanism may connect the left leg and the right leg so as to be mutually rotatable, or by sliding the lower portion of the right leg relative to the lower portion of the left leg, the left leg and the right leg respectively. You may be comprised so that a lower part may approach or separate relatively. In this case, the rollers 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).

  Even in this case, when the folded chair 100 is opened, the user can open the chair 100 without lifting the left leg and the right leg from the floor 5 via other members. . When the folded chair 100 is opened, the lower part of the left leg and the lower part of the right leg gradually separate from each other. At this time, since the roller 35 is in contact with the floor 5, while the position moves from the folding position P1 to the open position P2, the lower part of the right leg moves rightward with the rotation of the roller 35, With the rotation of 35, the leg opening operation is promoted. By performing such an operation, 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 other of 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 push-down portion of the present invention. However, the push-down portion is not limited to the rear portion 70 a of the backrest 70, and may be a portion provided directly or indirectly on the front leg 10, and may be a portion that rotates in conjunction with the front leg 10. For example, the push-down portion of the present invention may be the operating handle 80, the connecting frame 15, the rear portion of the seat portion 50, or the rear portion of the armrest 90. .

  In the above embodiment, the operation handle 80 is provided behind the backrest 70, but the installation location is not particularly limited. For example, the operation 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 part of the front leg 10 via the rotation shaft 36 a, the roller bracket 36, and the front-side non-slip cap 33. The roller 35 could not be easily removed from the lower part of the front leg 10 and the front side non-slip cap 33. However, the roller 35 may be provided detachably with respect to the lower part of the front leg 10, that is, detachably provided.

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

  Here, the cap 233 covers the lower part of the front leg 10 from below. As shown in FIG. 15, the cap 233 has a fitting space 234 that is recessed upward from the bottom surface. 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 on the bottom surface of the cap 233. The cap 233 is formed of an elastic body. The elastic body is, for example, rubber. The cap 233 is made of, for example, rubber.

  As shown in FIG. 14, the roller cover 240 is detachably fitted into the fitting space 234 of the cap 233 from below. The roller cover 240 has a shape that matches the fitting space 234. The roller 235 is rotatably accommodated in the roller cover 240 such that the lower end of the roller 235 is exposed downward from the roller cover 240. In the present embodiment, as shown in FIG. 17, the roller cover 240 has a pair of left and right left covers 240a and a right cover 240b. However, the roller cover 240 may be configured by one member, or may be configured by 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 240a. As shown in FIG. 14, when the left cover 240a and the right cover 240b are assembled, a cover space 241 is formed inside. Further, when the left cover 240a and the right cover 240b are assembled, the bottom is open, and the cover space 241 is connected to the above-mentioned bottom opening.

  In this embodiment, the roller cover 240 is provided with a rotation shaft 245. A roller 235 is inserted into the rotation shaft 245. The roller 235 rotates around the rotation shaft 245. The rotation shaft 245 is disposed in the cover space 241 and extends left and right. Here, the rotating shaft 245 is formed integrally with the right cover 240b, and extends from the right cover 240b toward the left cover 240a. The rotation shaft 245 may be formed integrally with the left cover 240a, or may be separate from the left cover 240a and the right cover 240b.

  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 concave portions 251 are formed on the inner peripheral surface of the cap 233, but the number of the concave portions 251 is not particularly limited, and may be one or three or more. You may. Here, the two concave portions 251 face each other. One concave portion 251 is formed at the lower portion on the left side of the inner peripheral surface of the cap 233, and the other concave portion 251 is formed at the lower right portion of the inner peripheral 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 protrusion 252 protrudes from the outer peripheral surface of the roller cover 240. The number of the convex portions 252 is not particularly limited, but is, for example, the same two as the number of the 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 the roller cover 240 is fitted into the fitting space 234 of the cap 233, the convex portion 252 fits into the 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. However, the position of the concave portion 251 and the position of the convex portion 252 are different. The reverse is also possible. That is, the concave portion 251 may be formed on the outer peripheral surface of the roller cover 240, and the convex portion 252 may be formed on the inner peripheral surface of the 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 lower front part of the outer peripheral surface of the roller cover 240, and the other groove 255 is formed in the lower rear part of the outer peripheral surface of the roller cover 240. Here, as shown in FIG. 17, one groove 255 formed in the lower front part of the roller cover 240 extends from the left cover 240a to the right cover 240b. Although not shown, the other groove 255 formed in the lower rear portion of the roller cover 240 is also formed from the left cover 240a to the right cover 240b. However, the two grooves 255 may be formed in only one of the left cover 240a and the right cover 240b. For example, a removal tool (not shown) such as a flathead screwdriver is inserted into the groove 255.

  For example, when removing the roller cover 240 from the cap 233, first, the above-described removal tool is 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, with the tip of the removal tool inserted into the groove 255, the tip is moved downward to push the roller cover 240 downward. As a result, the roller cover 240 can be removed 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 bathroom chair. The bathroom chair is used in a bathroom. For example, dust such as water scale or hair easily adheres to the inside of the cap 233 or the roller 235. However, since the roller 235 can be easily removed from the front leg 10, it is easy to remove dust adhering to the cap 233 and the roller 235, and it is easy to clean the cap 233 and the roller 235.

  In the present embodiment, the roller 235 can be attached to the cap 233 via the roller cover 240. The roller 235 is rotatably accommodated in the roller cover 240. By providing such a cap 233 and a roller cover 240, the roller 235 can be detachably provided below the front leg 10, and can be rotatable while being provided below 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 the cap 233, and as shown in FIG. 16, a convex portion 252 that fits into the concave portion 251 is formed on the outer peripheral surface of the roller cover 240. Is formed. Thus, when the roller cover 240 is fitted into the cap 233, the concave portion 251 and the convex portion 252 are fitted, and the vertical movement of the roller cover 240 is further restricted. Therefore, the roller cover 240 is unlikely to fall from the cap 233.

  In the present embodiment, a groove 255 is formed at 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 flathead screwdriver into the groove 255. Therefore, the roller cover 240 and the roller 235 can be easily removed from the cap 233 by using a removal tool.

Reference Signs List 10 front leg 20 rear leg 30 rotation mechanism 33 front non-slip cap (other non-slip part)
35 Roller (sliding part)
37 Rear non-slip cap (non-slip part)
100 chairs (bathroom chairs)
P1 Folding position P2 Open leg position

Claims (16)

A first leg,
A second leg whose lower portion is provided at a position away from the lower portion of the first leg;
A moving mechanism that relatively moves the lower part of the first leg and the lower part of the second leg toward and away from each other;
With
When the lower part of the first leg and the lower part of the second leg approach each other, the position of the first leg and the second leg is set to the folding position, and the lower part of the first leg and the second When the position of the first leg and the second leg when the lower part of the second leg is separated from the second leg is the open leg position,
The lower part of one of the first leg and the second leg is in contact with the floor at the folding position and the open position, and the sliding resistance with the floor is the first resistance. A stop is provided,
A lower portion of the other of the first leg and the second leg, which is in contact with the floor when in the folded position, has a second resistance smaller than the first resistance in sliding resistance with the floor. A bathroom chair provided with a sliding part. The first leg is a front leg,
The second leg is a hind leg,
The bathroom chair according to claim 1, wherein the moving mechanism is configured to connect the first leg and the second leg so as to be relatively rotatable.   The lower part of any one of the first leg and the second leg does not contact the floor when in the folded position, contacts the floor in the open position, and 3. The bathroom chair according to claim 1, further comprising another non-slip portion having a third resistance having a third resistance greater than the second resistance. 4.   The bathroom chair according to claim 3, wherein the sliding portion is configured not to contact the floor when the leg is in the open position.   5. The bathroom chair according to claim 3, wherein, when in the folded position, the other non-slip portion is disposed above a lower end of the slide portion. 6.   The bathroom chair according to any one of claims 3 to 5, wherein in the open position, the sliding portion is disposed above a lower end of the other non-slip portion.   The said sliding part is a roller provided in any one of the said 1st leg and the said 2nd leg, and provided rotatably with respect to the said other lower part, The any one of Claim 1 to 6 characterized by the above-mentioned. Bathroom chair.   The bathroom chair according to claim 7, wherein the roller is detachably provided to a lower portion of the other of the first leg and the second leg. A cap that covers a lower part of the other of the first leg and the second leg and that has a fitting space recessed upward from a bottom surface;
A roller cover in which the roller is rotatably housed so that the cap is detachably fitted into the fitting space of the cap and the lower end of the roller is exposed downward;
The bathroom chair according to claim 8, comprising: A concave portion is formed on one of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover,
The bathroom chair according to claim 9, wherein a convex portion that fits into the concave portion is formed on one of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover. The cap is formed by an elastic body,
The bathroom chair according to claim 9 or 10, wherein a groove is formed in a lower portion of an outer peripheral surface of the roller cover.   The bathroom chair according to any one of claims 1 to 11, wherein at least a surface of the non-slip portion that contacts the floor is formed of rubber. The sliding portion is provided at a lower portion of the front leg,
The bathroom chair according to any one of claims 1 to 12, wherein the non-slip portion is provided at a lower portion of a rear leg.   The bathroom chair according to claim 13, wherein the sliding portion is provided on a front side of a lower portion of the front leg. At the time of the folding position and the open position, a push-down portion provided directly or indirectly on the front leg so as to be disposed behind the rotation mechanism in a side view,
The bathroom chair according to claim 13, wherein the press-down portion is configured to cause a lower portion of the front leg to be separated from a lower portion of the rear leg by applying a downward force. The contact area of the sliding portion with the floor at the folding position is a first area,
The bathroom chair according to any one of claims 1 to 15, wherein a contact area of the sliding portion with the floor at the open leg position is a second area smaller than the first area.

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