JPH08280480A - Chair convertible to stepladder - Google Patents

Abstract

PURPOSE: To convert a chair to a stepladder by performing rotation around a hinge connection part, positioning the end part of a back pressing member on the same plane as the lower end parts of legs and turning the back pressing member to a supporting leg. CONSTITUTION: A first part 2 and a second part 3 can be rotated around hinges 13 and conversion from a frost state to a second state is performed. In the first state, the inclined side faces 7b of legs 7 on both sides of the second part 3 are piled on the inclined side faces 4b of the legs 4 on both sides of the first part 2. Also, the upper plate number 5 of the first part 2 and the upper plate member 8 of the second part 3 are positioned on the same plane. In the second state, the upper plate member 8 of the second part 3 is piled on the upper plate member 5 of the first part 2 and the ends of the side members 11a of the back pressing part 11 of the second part 3 are abutted onto a floor surface and turned to the supporting legs. That is, the length of the side members 11a of the back pressing part 11 is determined so as to position the ends of the side members 11 on the same plane as the lower ends of the legs 4 of the first part 2 in the second state. In the state, the stepladder whose steps are the step plate 6 of the first part 2, the back surface of the upper plate member 8 of the second part 3 and the step plate 10 of the second part 3 is obtained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a chair that can be converted into a stepladder. More particularly, the present invention relates to a chair that is made up of two hinged parts that can be converted from a chair to a stepladder and vice versa by rotating the two parts at the hinged connection.

[0002]

2. Description of the Related Art Conventionally, a chair only has a function as a chair, and when it is used instead of a stepladder, it has been used only by riding on a seat of the chair. In addition, the stepladder cannot be used as a stepladder.

[0003]

An object of the present invention is to provide a chair that can be used as both a chair and a stepladder, that is, can be converted into a stepladder.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention provides a chair having a structure that can be converted into a stepladder. The chair according to the present invention comprises substantially triangular legs having diagonally inclined side faces on one side, on both sides, and a first portion to which a laterally extending plate member is attached so as to connect the upper portions of the legs on both sides. And a pair of substantially triangular legs having diagonally inclined side faces on one side, and a plate member extending in the lateral direction is attached so as to connect the upper portions of the both sides, from the upper end on the opposite side of the inclined side faces. And a second portion provided with a back support member extending upward. The first and second parts are
The edge of the plate member of the first portion on the inclined side surface side and the edge of the plate member of the second portion on the inclined side surface side are hingedly connected. In this connection, the plate member of the first portion and the plate member of the second portion are on the same plane when the inclined side surface of the leg of the first portion and the inclined side surface of the leg of the second portion overlap each other in the first state. Is a chair that is positioned and uses the plate members of the first and second parts as seats, and the second part is rotated around the hinge connecting part so that the plate member of the second part is superposed on the plate member of the first part. In the second state, the end of the backrest member of the second portion is located on the same plane as the lower end of the leg of the first portion so that the backrest member serves as a support leg.

A chair according to another aspect of the present invention has a triangular leg having a vertical leg member standing substantially vertically and an oblique leg member having an upper portion connected to the vertical leg member and extending obliquely downward from the upper portion. A first portion provided on both sides, to which plate members extending in the lateral direction are attached so as to connect the upper portions of the legs on both sides;
Triangular legs each having a vertically extending vertical leg member and a lower portion connected to a lower portion of the vertical leg member, and diagonal leg members extending obliquely upward from the lower portion are provided on both sides, and upper portions of the legs on both sides are connected. And a second portion provided with a back support member extending upward from the upper ends of the vertical leg members. First part and second
The portion includes the edge of the plate member of the first portion on the side of the diagonal leg member and the second portion.
Hinge connection is made at the edge of the plate member of the portion on the side of the diagonal leg member. The connection is between the diagonal leg member of the leg of the first part and the second leg.
In the first state in which the diagonal leg members of the partial legs overlap each other, the plate member of the first portion and the plate member of the second portion are located on the same plane with each other to form a chair having the plate member as a seat portion. , In the second state in which the second portion is rotated around the hinge connecting portion and the plate member of the second portion is superposed on the plate member of the first portion, the end portion of the backrest member of the second portion is first A part of the leg member is located on the same plane as the lower end portion of the leg member so that the backrest member serves as a supporting leg.

In a preferred embodiment of the invention, releasable coupling means are provided for coupling the legs of the first part and the legs of the second part when the chair is in the first state. By providing this coupling means, a sense of stability can be obtained in the state of use as a chair. Further, at least one intermediate step plate is provided to both sides of the first portion and / or both of the middle portions in the height direction of the legs of the second portion and the middle portions of the legs in the height direction of both sides of the second portion. It is preferable. This intermediate tread can increase the number of steps when used as a stepladder.

In the chair of the present invention, each of the first portion and the second portion is preferably formed by integrally molding a plastic material. The backrest member is composed of a pair of side members continuously formed integrally with the upper ends of the legs on both sides of the second portion, and at least one lateral member provided between the pair of side members. Preferably. Embodiments of the present invention will be described below with reference to the drawings.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, these figures show perspective views of a convertible chair according to an embodiment of the present invention when used as a chair and as a stepladder, respectively. . The chair 1 has a first part 2 and a second part 3
With. The first portion 2 has a pair of legs 4 and both legs 4
An upper plate member 5 is provided between the upper ends of the two. The leg 4 has a substantially triangular shape having a notch 4a at the lower end, and a foot plate 6 is provided in the middle of the height direction between the legs 4. Each of the legs 4 has an edge surface 4b extending substantially perpendicularly to one side.
And has an inclined side surface 4c on the opposite side so as to taper toward the upper end. The step board 6 constitutes a connecting member that secures the rigidity of the first portion 1 by connecting the legs 4 on both sides together with the upper plate member 5. At the same time, the footboard 6 becomes a footboard when the chair 1 of this embodiment is used as a stepladder. First
The part 1 is preferably formed by integral molding of a plastic material.

The second portion 3 has a pair of legs 7. Leg 7
Is an edge surface 7a formed so as to extend substantially vertically to one side.
And a substantially triangular shape having an inclined side surface 7b formed on the opposite side of the edge surface 7a. As shown in FIG. 1, the legs 7 of the second part 3 are arranged in a downwardly tapered manner. An upper plate member 8 is provided in the second portion 3 between the upper ends of the legs 7. Further, a connecting member 9 is provided between the lower ends of the legs 7. In the middle of the leg 7 in the height direction, a footboard 10 is arranged between the legs 7 on both sides.

On the side of the edge surface 7a of the leg 7 of the second portion 3, there is provided a pair of side members 11a forming a back support 11 so as to extend upward from the leg 7. Two lateral members 12a and 12b are provided between the pair of side members 11a. The leg 7 for the upper plate member 8 of the second portion 3
The inclination angle of the inclined side surface 7b is the same as the inclination angle of the inclined side surface 4c of the leg 4 with respect to the upper plate member 5 of the first portion. The second portion 3 is formed by integrally molding a plastic material.

As shown in FIG. 2, the first portion 2 and the second portion 3 are formed of legs 4 and 5 among the edges of the upper plate members 5 and 8, respectively.
The hinges 13 are connected to each other at the edges located on the side of the inclined side surfaces 4c, 7b of 7. By this connection, the first portion 2 and the second portion 3 can be rotated around the hinge 13, and the first state shown in FIG. 1 can be converted to the second state shown in FIG.

In the first state shown in FIG. 1, the inclined side surfaces 7b of the legs 7 on both sides of the second portion 3 overlap the inclined side surfaces 4b of the legs 4 on both sides of the first portion 2. Further, the upper plate member 5 of the first portion 2 and the upper plate member 8 of the second portion 3 are located on the same plane. A coupling device 14 is provided for coupling the legs 4 of the first part 2 and the legs 7 of the second part 3 together in this first state. As shown in FIG. 3, the coupling device 14 includes a hook metal fitting 14a attached to the outer surface of the leg 7 of the second portion 3 and a metal fitting 14b attached to the outer surface of the leg 4 of the first portion 2. An engagement lever 14c is rotatably provided on the metal fitting 14b.
The legs 4 and 7 are coupled to each other by engaging the engaging lever 14c on the metal fitting 14b with the hook of the metal fitting 14a.

In the second state shown in FIG. 2, the upper plate member 8 of the second portion 3 is superposed on the upper plate member 5 of the first portion 2, and the end of the side member 11a of the back support portion 11 of the second portion 3 is formed. Hits the floor and becomes a supporting leg. That is, the side member 11 of the back support portion 11
The length of a is determined so that the end of the side member 11 is flush with the lower end of the leg 4 of the first portion 2 in the second state. In this state, the footboard 6 and the second portion 3 of the first portion 2
A stepladder in which the back surface of the upper plate member 8 and the step plate 10 of the second portion 3 serve as a step is formed.

4 and 5 show another embodiment of the present invention. The structure of this embodiment is basically the same as the previously described embodiment, but the structure of the legs 4, 7 is different. In this embodiment, the leg 4 has a substantially triangular shape as in the previous embodiment, but in addition to the lower cutout 4a, a triangular cutout hole 4d is formed in the upper portion. Therefore, the leg 4 is composed of a vertical leg member 4e extending substantially vertically and an oblique leg member 4f extending obliquely downward from the upper end of the vertical leg member 4e. The vertical leg member 4e and the diagonal leg member 4f are connected by a connecting member 4g in the lower portion.

The legs 7 of the second portion 3 are formed by vertical leg members 7c extending substantially vertically and diagonal leg members 7d extending diagonally. A connecting member 7e for connecting the leg members 7c and 7d
Is provided. The side member 11a of the back support 11 is formed continuously with the vertical leg member 7c of the leg 7. Other structures are
It is similar to the previous embodiment. Therefore, the corresponding parts are designated by the same reference numerals as in the previous embodiment, and detailed description thereof is omitted.

[0016]

As is apparent from the above description, according to the present invention, there is provided a chair that can be converted into a stepladder as needed. This chair is very convenient because it can be used as a stepladder.

[Brief description of drawings]

FIG. 1 is a perspective view showing a use state of a chair convertible into a stepladder showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the chair of the embodiment of the present invention shown in FIG. 1 is used as a stepladder.

FIG. 3 is a modified side view showing details of a coupling device between legs in the embodiment of FIG.

FIG. 4 is a perspective view similar to FIG. 1, showing another embodiment of the present invention.

5 is a perspective view showing a state where the chair of the embodiment of FIG. 4 is used as a stepladder. FIG.

[Explanation of symbols]

 1 ... Chair, 2 ... 1st part, 3 ... 2nd part, 4, 7 ..., Leg, 5, 8 ... ..Treads, 11 ...

Claims (7)

[Claims] 1. A first plate having, on both sides, substantially triangular legs each having a side surface that is inclined to one side, and a plate member extending in a lateral direction attached to connect upper portions of the legs on both sides.
And a substantially triangular leg having one side and one side inclined obliquely on one side, and a plate member extending in the lateral direction is attached so as to connect the upper portions of the both sides of the leg to the opposite side of the inclined side. Second provided with a back support member extending upward from the upper end of the
A portion of the first portion hingedly connected to the edge of the plate member on the inclined side surface side and an edge of the second portion of the plate member on the inclined side surface side, the leg of the first portion Of the plate member of the first portion and the plate member of the second portion are located on the same plane when the inclined side surface and the inclined side surface of the leg of the second portion overlap each other in the first state. And a chair using the plate member of the first and second portions as a seat portion is provided, and the plate member of the second portion is rotated by rotating the second portion around the hinge connecting portion. In the second state in which the back rest member of the second portion is overlaid, the end portion of the back rest member of the second portion is located in the same plane as the lower end portion of the leg of the first portion, and the back rest member is supported. A chair that can be converted into a stepladder characterized by becoming a stepladder. 2. Triangular legs, each of which is composed of a vertically extending vertical leg member and an oblique leg member whose upper portion is connected to the vertical leg member and extends obliquely downward from the upper portion, are provided on both sides, and the legs on both sides are provided. A first part to which a plate member extending in a lateral direction is attached so as to connect the upper part of the vertical leg member, and a vertical leg member extending substantially vertically and a lower part of the vertical leg member connected to the lower part of the vertical leg member and extending obliquely upward from the lower part And a plate member extending laterally so as to connect the upper parts of the legs on both sides, and a backrest member extending upward from the upper end of the vertical leg member. Hingedly connecting the formed second portion to the edge of the plate member of the first portion on the side of the diagonal leg member and the edge of the plate member of the second portion on the side of the diagonal leg member, The diagonal leg member of the leg of the first portion; The plate member of the first portion and the plate member of the second portion are located on the same plane with each other in the first state in which the diagonal leg member of the leg of the second portion overlaps each other. In the second state in which the member is a chair, and the second portion is rotated around the hinge connecting portion to overlap the plate member of the second portion on the plate member of the first portion. An end portion of the backrest member of the second portion is located on the same plane as a lower end portion of the leg member of the first portion to form a stepladder having the backrest member as a support leg. A chair that can be converted into a stepladder. 3. The chair according to claim 1 or 2, wherein releasable coupling means for coupling the leg of the first portion and the leg of the second portion in the first state. A chair characterized by being provided. 4. The chair according to any one of claims 1 to 3, wherein a middle portion of both sides of the first portion is provided at a middle portion in a height direction of the legs, and the middle portion is provided to the both legs. A chair having at least one tread. 5. The chair according to any one of claims 1 to 4, wherein a middle portion of both sides of the second portion is provided at an intermediate portion in a height direction of the legs, and the middle portions are provided to the legs on both sides. A chair having at least one tread. 6. The chair according to claim 1, wherein each of the first portion and the second portion is formed by integrally molding a plastic material. Chair to do. 7. The chair according to any one of claims 1 to 6, wherein the backrest member is the second member.
It is characterized by comprising a pair of side members continuously formed integrally with the upper ends of the legs on both sides of the part, and at least one lateral member provided between the pair of side members. Chair.