JP3032937U - Chair with legs - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To put a chair with a footrest into practical use, which makes it possible to increase the rigidity of legs while ensuring storageability by stacking and to obtain good footrest. SOLUTION: Two steel pipe leg members 3a formed by bending a steel pipe in an inverted U shape intersect so as to form a cross shape in a plan view, and a disc-shaped seat plate 2 is provided on an upper portion of the steel pipe leg members 3. On the other hand, the floor surface protecting member 5 is inserted into the lower end of the leg portion 3 facing downward, and the supporting member 4a stands horizontally and radially at a predetermined height position from the lower end of each leg portion 3a. The supporting member 4
An annular footrest member 4, which is concentrically formed on the seat plate 2, is fixed to the outer periphery of the chair body 1 at the tip of a.

Description

[Detailed description of the invention]

[0001]

[Purpose of the invention]

 This invention relates to the structure of a chair having an annular footrest made of steel pipe in the middle of the leg, which is often found in dining room table chairs and counter chairs, and in particular, enables stacking and storing of a plurality of chairs. At the same time, the present invention aims to provide a chair with a legrest having a novel structure characterized by a structure for attaching the annular legrest to the leg.

[0002]

[Prior art]

 Chairs generally used for dining table chairs, counter chairs, etc. are called round chairs with a steel pipe leg attached with a disk-shaped seat plate. The ends of the two legs formed by bending in a substantially inverted U shape are set to the ground side, and they are crossed in a cross shape in plan view and integrated with the back surface of the seat plate by tapping screws or the like. If necessary, a cushion cover or the like is laminated on the seat plate. A round chair with such a structure is lightweight and inexpensive, and is extremely suitable for a short time as a chair for dining halls, school children, etc. Moreover, since it can be stacked, it can be stored and managed. It has been used for many years due to its excellent handleability.

Although the round chair has the above-mentioned utility value, since the legs are usually composed of only four steel pipes, the legs expand when an excessive load is applied. Therefore, there are many things that are poor in structural strength, such as being unable to withstand sitting and falling into a damaged state.Therefore, it has been desired to improve the structural strength of the legs. However, if some kind of reinforcement structure is incorporated into the legs, the stacking and storing ability, which is one of the features of this type of chair, may be impaired. No particular improvement in strength was made, and the structure remains the same as it used to be, until now.

In addition, it is difficult to provide a backrest or a footrest portion for stabilizing the seating in order to realize stacking storage in the round chair, and it is difficult to stabilize the sitting posture particularly when used for school children. In addition, there is a risk that the seated posture may not be maintained even when the seated posture is vigorously moved, which leads to the structural improvement described above and is effective for stabilizing the seated posture. Although the necessity of incorporating footrests has been sought many times in the past, there were almost no proposals for achieving the intended purpose.

The inventor of the present application pays attention to the present situation of such a round chair, and pays attention to the necessity of practical application of a chair with a legrest that can increase the rigidity of legs while ensuring the storage capacity by stacking. As a result of repeated research and development over a long period of time through repeated trial and error, we finally developed and realized a new chair with a footrest that has a completely new footrest structure, as will be described later. succeeded in. In the following, the configuration will be described in detail together with an embodiment representative of the present invention shown in the drawings.

[0006]

[Structure of device]

 As can be clearly understood from the representative examples of the present invention shown in the drawings, the chair with a legrest included in the present invention basically has the following configuration. That is, a plurality of steel pipe leg members, which are bent in a substantially inverted U-shape and have both open end sides as legs, and floor protection members are attached to the lower ends of the legs, respectively, are provided above the leg members. It intersects in the center of the horizontal part and is combined in a well-balanced manner in a plane arrangement, and on the upper horizontal part of the plurality of steel pipe leg members, the horizontal distance between both leg parts of each steel pipe leg member is Also has a small diameter so that a seat plate formed into a shape and dimension that can be inserted inside each leg is integrated, while the outside of a predetermined height position from the lower end of each leg of the steel pipe leg member. Is a chair with a footrest whose main feature is a structure in which an annular footrest is connected and fixed by a connection structure in which the support member is partially exposed to the outside by a predetermined dimension. .

The above-mentioned steel pipe leg member is a metal pipe material having sufficient strength and formability. Further, since it is desirable that it is a lightweight material, in addition to a simple steel pipe, for example, an aluminum alloy. It may be made of stainless steel, or a material in which reinforced plastic is laminated and reinforced on them. Also, the inverted U-shaped structure is not limited to one steel pipe bent and formed in an inverted U-shape, and for example, three or more legs having an inverted L-shape are connected. By doing so, it is possible to form three or more legs and finally form adjacent U-shaped legs in which the adjacent legs are slightly deformed.

The floor surface protection member is fitted to the end portion of the above-mentioned steel pipe leg member and is made of a soft material to prevent the floor surface from being scratched. For example, natural rubber or synthetic rubber, A cushioning material such as cork, non-woven fabric, sponge, or rubber may be added to the portion formed of soft plastic or the like and joined to the floor surface. It is also possible to attach casters to the ends of the above steel pipe leg members, and the casters are provided with cushioning materials such as synthetic resin or rubber covers on the rolling surfaces of the wheels to protect the floor surface. It may be configured as follows.

The seat plate has a shape that can be inserted and stacked from the lower side of the leg, that is, a flat shape such as a shape passing through the axis of each leg, such as a perfect circle, an ellipse, a polygon, or another shape. Plates processed so that they fit inside (in the case of four legs, the diameter is smaller than the horizontal distance between the legs that are arranged opposite to each other by at least slightly larger than twice the cross section of the legs). Material, such as synthetic resin, metal plate, wood board, plywood, etc., that has rigidity to withstand sitting, and is made of cloth or resin with or without cushioning material such as sponge or urethane foam as necessary. The chair shall have a general surface finish as a chair, such as a structure with a cover sheet made of leather or leather attached. It is also possible to connect the seat plate by a shaft structure that rotatably supports the legs so that the direction can be freely changed while seated.

The support member has a function of attaching and supporting an annular footrest, which will be described later, to the leg portion of the steel pipe leg member. The leg member is formed by cutting a steel pipe or steel rod into short pieces. For example, a ring-shaped band tube having a diameter larger than that of the leg portion, whose inner peripheral edge is the leg It is also possible to employ a device that is welded so as to come into contact with the portion and fixed with a screw so as to be integrated, etc., and at a height position of at least about 20 mm or more from the lower end, in order to obtain a sufficient effect as a footrest. Desirably, at a height position of about 50 mm to 150 mm, the side opposite to the side connected to the leg is projected to the lateral side of the leg or obliquely upward, and an annular footrest member is connected to the end to integrally After being converted, the circular footrest The external force applied to the foot members is reliably transmitted to the legs, and from the viewpoint of strength and storability, it is desirable to safely support the below-mentioned annular footrest on the outside with a distance of about 10 mm from the surface of the legs. It enables you to do it.

It has been stated above that the annular footrest member is located about 50 to 150 mm above the lower ends of all the legs and about 10 to 40 mm outside each leg. It is supported by a support member and serves to receive the person's foot in order to stabilize the posture of the seated person and maintain a comfortable posture. For example, a steel pipe bent into an annular shape. If necessary, it may be roughened, or rubber or soft plastic material may be added or a paint finish may be applied to prevent slippage. It is also possible to give a stimulus to the sole of the foot, or attach a magnet or the like to a necessary place to improve blood circulation on the sole of the foot so as to improve the health.

[0012] For the annular footrest member having the above-mentioned magnet attached thereto, for example, is the entire member made of highly rigid magnetic steel, is the magnet piece itself embedded in the outer surface, or is it attached? Alternatively, in addition to the one inserted in the hollow portion of the steel pipe, a magnet sheet may be attached to the surface, or a coating layer may be formed with a paint containing magnet powder. Hereinafter, each embodiment will be described with reference to the drawings in order to more clearly understand the footrest chair included in the present invention.

[0013]

Embodiment 1 A case shown in a perspective view of a chair with a legrest in FIG. 1, a plan view of FIG. 2 and a sectional view of an essential part showing a coupling structure of an annular legrest member and legs in FIG. This is an example of a chair with a legrest having the most typical structure, and the structure thereof will be specifically described below. The chair 1 with a legrest shown in the figure comprises a wooden disc-shaped seat plate 2 and a steel pipe leg member 3 which is integrated with the lower surface of the seat plate 2 by tapping screws or the like. The steel pipe leg member 3 is formed by bending a φ22 mm steel pipe into a substantially inverted U shape, and the open end sides of the steel pipe leg member 3 become a pair of leg portions 3a and 3a. A floor surface protection member that prevents damage is attached.

The upper horizontal portions of the leg portions 3a, 3a are crushed at the center portion thereof and have small holes formed therein so that the pair of steel pipe leg members 3, 3 intersect in a cross shape in plan view. , The tapping screws are screwed together by using the small holes of each other, and the tapping screws are similarly screwed into the small holes that are formed in advance in the horizontal part apart from the small holes. A pair of steel pipe leg members 3 and 3 are firmly integrated on the back surface of the seat plate 2 including the child.

On the other hand, the leg portions 3a, 3a, ... Of the steel pipe leg members 3, 3 are annular footrests formed by bending a steel pipe into a substantially circular shape on the outer peripheral portion above the lower end by about 100 mm. 4 are supported by short tube support members 4a, 4a, ... so as to stop at positions about 10 mm away from the outer peripheral surfaces of the respective leg portions 3a, 3a ,. The supporting member 4a is formed from a total of four steel pipes having an outer diameter of 9 mm and a total length of about 50 mm, and the base end of each of the supporting members 4a penetrates the peripheral walls of the legs 3a, 3a ,. The holes are inserted into the holes 3b, 3b, ...

The annular footrest member 4 is formed by bending a steel pipe having an outer diameter of φ19 mm into a circular shape and welding both ends to each other. The supporting members 4a, 4a protruding from the leg portion 3a are provided. As shown in FIG. 3, insertion holes 4b, 4b, ... Are bored in the inner peripheral surfaces of the four locations corresponding to ,, ..., And the front end sides of the support members 4a, 4a ,. By being inserted and welded, the legs 3a, 3a, ... Are firmly integrated with each other at a distance of about 10 mm from the outer peripheral surface. The welded portion W1 is integrated with the edge portion of the through hole 3b and the base end portion of the support member 4a, and the welded portion W2 is the welded portion between the support member 4a and the outer peripheral wall surface of the leg portion 3a facing outward. The welded portions W3 show the welded portions of the edge of the insertion hole 4b and the lower portion of the outer peripheral wall of the support member 4a, respectively. The two welded portions W2, W3 formed in the middle of the support member 4a are Both are given to the lower part, so that they are not noticeable in appearance.

On the other hand, as shown in FIG. 5 and FIG. 6, a felt 5c for protecting the floor is integrally molded in the lower end opening of each of the steel pipe leg members 3a. 5 is press fitted. The floor surface protecting member 5 is formed by integrally pressing a press-fitting cylinder portion 5a into which the opening portion of the steel pipe leg member 3a is press-fitted and fitted, and a lower end of the press-fitting cylinder portion 5a. A step holding portion 5b for limiting the amount of press-fitting to the leg member 3a and receiving a load at the time of sitting, and a felt 5c integrally formed on the lower portion of the step holding portion 5b and directly contacting the floor surface are provided. There is.

[0018]

Embodiment 2 The example shown in the cross-sectional view of the main part showing the connecting structure of the annular footrest member 4 to the steel pipe leg member 3 in FIG. 4 is another embodiment of the chair 1 with footrest included in the present invention. It is shown. A mounting hole 4b for the supporting member 4a is formed in the inner peripheral surface of the annular footrest member 4 corresponding to the leg portion 3a, and a supporting member is also provided on the outer peripheral wall of the leg portion 3a facing the annular footrest member 4. A mounting hole 3b for mounting 4a is bored, and the base end of the support member 4a inserted into the mounting hole 3b is in contact with the inner peripheral wall of the leg 3a facing the inside of the chair 1. The upper part of the mounting hole 3b and the supporting member 4a are integrated by welding (welding part W2).

Further, the tip end portion of the support member 4 a is inserted into an insertion hole 4 b formed in the inner peripheral wall surface facing the leg portion 3 a of the annular footrest member 4, and the tip end portion thereof is inside the annular footrest member 4. In addition to being in contact with the peripheral surface, the edge of the mounting hole 4b and the outer peripheral wall of the support member 4a are integrated by welding (welding portion W2). In this case, unlike the above-described embodiment, the base end of the support member 4b does not penetrate the leg portion, so that the welded portion W1 appears inside the leg portion and an internal structure can be realized.

[0019]

[Action]

 Since the chair 1 with a legrest of the first embodiment is provided with the ring-shaped legrest 4, the rigidity of the leg 3 is increased, and high durability is exhibited even when a heavy load is applied to the chair 1. In addition, it is possible to efficiently stack and store a plurality of chairs 1, 1, 1 as shown in FIG. Since the footrest 4 is attached and fixed to the outside of the leg 3 by a predetermined distance, the chair 1 with a footrest can be stored at a high density without hindering stacking. Further, leg caps 5 that can be extremely easily inserted by hand are attached to all the lower end portions of the leg portions 3, and a felt 5c at the tip is configured to protect the floor surface. .

The mounting structure for the footrest 4 shown in FIG. 3 is extremely efficient assembling only by welding, and the welds W1, W2 and W3 are found from the appearance during normal use. Since it is provided in a position where it is difficult to perform, it is possible to provide the chair 1 having a high external appearance.

[0021]

【effect】

 As described above, according to the chair with a footrest included in the present invention, first of all, by providing the footrest part which is not provided at all in the conventional round chair or the like, the sitting position in a comfortable posture is first of all provided. In addition, the footrests, which are located appropriately forward of the seat plate, stabilize the sitting posture, and especially for school children who have unstable sitting posture and are expected to move violently. It was possible to make it the most suitable chair to use for dining, eating, reading, etc., and also to have a good design and a functional beauty not seen in other chairs. In addition, the annular footrest member is expected to be useful for stimulating the soles of the feet and promoting health, and in order to increase the effect, the annular footrest member is provided with surface protrusions, magnets, etc. Assume By, it becomes possible to promote the circulation of the soles of the feet, in particular, be used for school children, it is possible to provide as a very ideal chair in promoting a healthy development.

Further, since the annular footrest member is arranged on the outside of the leg portion, it is possible to stack and store the same plurality of chairs, so that extremely high storage efficiency can be achieved. In addition, by providing the annular footrest member, it is possible to remarkably improve the strength of the round chair, which is generally considered to be low in rigidity and poor in durability, and is particularly rough to handle. , It can be extremely effective as a chair for schoolboys who like mischief.

As described above, the chair with a footrest included in the present invention uniformly achieves the usability and handleability that cannot be realized by the conventional round chair, and further the improvement in structural strength. In addition, since it can be provided with the same simplicity as the conventional one in terms of manufacturing, it is very useful for the further spread of the circular chair, which is evaluated for its various uses and conveniences. Is expected to become.

[Brief description of the drawings]

The drawings show some typical embodiments embodying the technical idea of the chair according to the present invention.

FIG. 1 is a perspective view of a foot chair included in the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a main-portion cross-sectional view showing an example of a connecting structure of an annular footrest member and a leg portion.

FIG. 4 is a cross-sectional view of a main part showing another example of the same connecting structure.

FIG. 5 is an exploded perspective view of essential parts showing a mounting structure of a floor surface protection member.

FIG. 6 is a vertical sectional view of a floor surface protection member.

FIG. 7 is a perspective view illustrating a storage state.

[Explanation of symbols]

 1 Chair with a footrest 2 Disc-shaped seat plate 3 Steel pipe leg member 3a Same leg portion 3b Same through hole 4 Annular footrest member 4a Same support member 4b Same insertion hole W1, W2, W3 Welded portion 5 Floor surface protection member 5a Same Press-fitting cylinder part 5b Same step holding part 5c Same felt 6 Tapping screw 7 Tapping screw

Claims (4)

[Utility model registration claims] 1. A plurality of steel pipe leg members, each of which is bent into a substantially inverted U shape and has both open end sides as legs, and floor protection members are attached to the lower ends of the legs. , The upper horizontal part is intersected at the center and is combined in a well-balanced manner on the plane arrangement, and the horizontal distance between the two leg parts of each steel pipe leg member is on the upper horizontal part of the plurality of steel pipe leg members. While the seat plate having a smaller diameter than that of the leg portion of the steel pipe leg member is integrated with a seat plate formed into a shape dimension that can be inserted inside each leg portion, the outside of a predetermined height position from the lower end of each leg portion of the steel pipe leg member. The annular footrest is connected to a supporting member that is protruded outward by a predetermined dimension with a connection structure in which the supporting member is partially exposed.
A chair with a legrest that is fixed. 2. A pair of steel pipe leg members, each of which is bent in a substantially inverted U-shape and has both open end sides as legs, and the floor surface protecting members are attached to the lower ends of the legs, respectively. At the center of the upper horizontal portion, they intersect in a cross shape and are combined in a well-balanced manner in a plane arrangement. A seat plate having a diameter smaller than the distance and having a shape dimension that can be inserted into the inside of each leg is integrated by a screw penetrating a horizontal portion of the steel pipe leg member. 20 mm or more from the lower end of each leg of the member, preferably outside the height position within the range of about 50 to 150 mm,
A connection structure in which the support member is exposed to the outside by a predetermined dimension and the support member has an exposed shape of about 10 to 40 mm, preferably about 10 mm. A chair with a legrest that is characterized by being made. 3. The chair with a footrest according to any one of claims 1 to 3, wherein the ring-shaped footrest has a combination of magnets at essential points. 4. The floor protection member attached to the lower end of the leg portion of the steel pipe leg member includes a press-fitting column portion or a press-fitting tubular portion made of an elastic synthetic resin that can be press-fitted into a steel pipe cut portion forming the leg portion, The lower part of the press-fitting column part or the press-fitting cylinder part is provided with a step holding part for abutting against the cut end of the steel pipe forming the leg to limit the amount of press-fitting, and the lower end surface of the step holding part is appropriately thickened. The chair with a footrest according to any one of claims 1 to 3, wherein the protection piece made of felt is integrally formed, or is integrally formed by adhesion or welding.