Chair With Indexing Supports

Abstract

A chair is comprised of a main body including a seat portion with a back portion extending therefrom and two confronting sidewalls formed integrally therewith and somewhat extended downwardly to form legs of the chair. The confronting sidewalls are externally and indexably provided with support arms for enabling the chair to serve as either a rocking chair or a stationary chair.

Description

BACKGROUND AND SUMMARY OF THE INVENTION

This invention relates to a chair and particularly a chair for body which is specially balanced and constructed to let baby sit, sleep, feed and play safely, with a gentle, soothing rocking motion or a stationary settlement as desired.

Hitherto, the cradle or rocking chair usually necessitates an anchoring device when it is needed to be positioned stationarily without entailing any rocking motion.

It is, therefore, a general object of the invention to provide a chair which may be used as either a rocking chair or a stationary one without requiring any anchoring device.

In accordance with the invention, the chair is comprised of a main body including a seat portion with back portion extended therefrom and two confronting sidewalls formed integrally therewith and somewhat extended downwardly to form legs of the chair. The confronting sidewalls are externally and indexably mounted with two support arms of substantially ear form each of which having at its one end a head portion of large width providing an apertured means adapted to be indexably engaged with post means projecting from the sidewalls and at its opposite end a tail end of small width adapted to be interconnected with a tail end of the other support arm through a connection laid across the rear side of the seat back.

A principal object of the present invention is to provide a chair which comprises a main body including a seat portion with a back portion integrally extending therefrom, two sidewalls integrally provided at opposite sides of the main body, each sidewall consisting of a triangular segment having a base linking between a top corner of the back portion and an end corner of the seat portion with a slow curve and a rounded apex with sides extending from a boundary of the body seat with a steep slope to form one of legs of the chair and two support arms indexably mounted to outer sides of the sidewalls respectively.

Another objects, features and advantages of the invention will be apparent from the following description in connection with the accompanying drawing in which:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the chair in a complete assembly in accordance with the present invention;

FIG. 2 is a longitudinally sectioned view of the main body of the chair taken along the line II--II of FIG. 1;

FIG. 3 is a lateral elevation of the chair showing the connecting relation between the chair body and the indexable support arm with distinct positions shown by the dotted lines;

FIG. 4 is a lateral elevation in partially sectioned of the connection similar to FIG. 3 but showing another embodiment of the invention;

FIG. 5 is a longitudinally sectioned view of the connection between the chair body and the indexable support arm of FIG. 4; and

FIG. 6 is a sectional elevation of a connection between the support arm at its tail end and a connection member.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

In FIGS. 1 and 2, the chair in accordance with the present invention comprises a main body 10 which includes a seat portion 12 and a back portion 14 extending upwardly from the seat portion 12 with a little level thus forming the main body into an acute form in section as best shown in FIG. 2 and is provided at its opposite sides with two symmetrical side walls of triangular form 16 which includes a base rim portion of slow slope 18 extending between an upper corner 20 of the back portion 14 and a lower corner 22 of the seat portion 12 and a rounded apex 24 with two sides 26 both serving as a leg of the chair. That is, in accordance with the invented chair, the seat 12 and the back 14 may be reversible by indexing the support arms as hereinafter described. The sidewalls 16 are externally provided with two posts 28 of polygonal and preferably pentagonal or hexagonal form in section. Alternatively, the post may be of a rod-like configuration having around its circumferentail region an external toothing as shown in FIG. 4. To the post 28 is indexably mounted a support arm 30.

The support arm 30 is typically formed into an ear profile including a head portion of large width 32 and a tail end of small width 34. The head portion 32 is provided with an aperture 36 for interlocking separable engagement with the post 28.

In another embodiment shown in FIG. 4, the post 28 is of a rod like member and provided with an external toothing 38 at its circumferential region whereas an aperture 36 is provided with an internal toothing 40 adapted to be made into an interlocking separable engagement with the post 28 having the external toothing 38 in an indexing operational relation.

In the indexing operation of the support arm 30 in cooperation with the chair body 10, the head portion 32 of the arm is completely disengaged and separated from the post 28 in case of the first embodiment whereas in case of the second embodiment the support arm at its head portion is inseparably connected to the main body through a spring means as hereinafter described.

In FIG. 5, the post 28 comprises a base external toothing 42 and an extension 44 possessing therein a guide slot 46. While the apertured means of the support arm 30 comprises an internal toothing 48 and a projection 50 adapted to be inserted into the guide slot 46 and having a guide groove 52 for mounting therein spring means 54. The groove 52 is opened at its one end for insertion of the spring means and closed at its opposite end except a center hole for passing a core fastener of the spring means. By this construction, the support arm is made into an interlocking inseparable engagement with the post in the indexing relation.

As best shown in FIGS. 1 and 6, tail end 34 of the support arm is interconnected with each other at the rear side of the seat back 14 by a connecting pipe 56 through a coupling member 58 embeded in one end of the connection pipe 56, an adapter 60 encircling the said end and a fastener 62 screwed into the coupling member 58. An inserting post for the fastener 62 is somewhat protruded outwardly to form a protuberance 64 so that the bending distorsion converged at the tail end of the support arm when the head portion of the arm is somewhat widened for indexing operation is satisfactorily absorved by the said protuberance 64 without damaging the tail end of the support arm.

The main body of the chair may be provided with a safty band, for example, a T-shaped band 66 as best shown in FIG. 1.

All members of the chair in accordance with the present invention may be made of synthetic resin but some member, particularly, support members are preferably reinforced by a beam 68.

In the positioning operation of the chair, the head portion of the support arms are manually disengaged from the posts for indexing the support arms against the chair body as desired according to the purpose. For example, when the support arms are indexed as shwon in FIG. 1, the chair serves as a cradle or rocking chair. On the other hand, when the support arms are indexed in the positions A and B as shown in FIG. 3, the chair will serve as a stationary chair.

While, certain preferred embodiments of the invention have been illustrated by way of example in the drawings and particularly described, it will be understood that modifications may be made in the constructions and that the invention is no way limited to the embodiments shown.

Claims

1. A chair comprising a main body having integrally formed therewith a seat portion, a back portion extending therefrom and two sidewall portions joining said seat and back portions at opposed sides thereof, a pair of support arms indexably mounted adjacent at least one of their ends to the outer sides of said sidewall portions, and post means provided on each of said sidewall portions and projecting laterally and outwardly therefrom for connection with said support arms, said post means comprising a projection of circular section and having an outer tooth formation about its periphery, said support arms at said indexably mounted ends being formed with a circular bore provided with an inner complementary tooth

2. A chair according to claim 1, wherein each of said sidewall portions is substantially in the form of a triangular segment the base of which has a shallow inward curve linking the upper corner of said back portion with an outer corner of said seat portion, the apex of the triangular segment being rounded and the sides of the triangular segment at the boundary of

3. A chair according to claim 2, wherein each support arm has a substantially ear-shaped profile and includes a head portion of large width which is provided with an apertured means for interlocking engagement with the post means, each support arm further having a tail end of a width smaller than that of the head portion, the tail ends of each of

4. A chair according to claim 3, wherein said tail end of each support arm is provided with a distortion absorbing means comprising a protruberance for permitting absorbtion of bending forces resulting from indexing of said support means.