DE2402610A1 - FOLDING CHAIR WITH A JOINT CONNECTING THREE ELEMENTS - Google Patents

Description

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TALIN S.R.L., Comedo Vicentino (Vicenza - Italy)

Foldable chair with a joint connecting three elements

The invention relates to a collapsible. bar chair, but especially on a tubular metal chair a joint connecting three elements.

It is known that metal tube chairs are increasingly used recently, which are used in an operational. or put out of operation can be transferred. These chairs have a frame made of metal tubes, which is in the Cross-section is approximately rectangular. These metal pipes form the ' front support, the bracket and the frame for ^ the backrest and the rear support of the chair.

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The aforementioned elements are in the inoperative position, in which the chair is folded or folded up is, practically in a single level, in order to minimize the space required for the folded chair. This provides for both the storage or the parking as well as for the transport of the chair, even a corresponding- * the advantage.

The object of the invention is therefore to create a chair of this type with connecting joints with which all three The aforementioned parts of the chair assume two stable positions, namely a working position and an inoperative position can, with a perfect stability in these two positions is ensured, with what load this chair and so the individual parts of it may also always be burdened. ·

According to a further feature of the invention, those elements which form the joint consist of a core made of iron or steel, which is covered with an aluminum layer is. Parts to be inserted are also provided which, together with the joints, give the chair great strength. In addition, these parts forming the frame of the chair can be assembled very easily to form the chair according to the invention.

According to a further feature of the invention, an external element of the joint is provided, which with an approach is equipped, on which a support rod for the armrests of the chair is attached, with these The foldable chair according to the invention can have armrests be equipped.

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The invention is illustrated in more detail below with reference to the drawing. In this show in pure schematic way:

Fig. 1 is a perspective view of the chair according to the invention, the The frame of the same is in the open position and the two joints according to the invention are trained

FIG. 2 shows a longitudinal section along the line II-II in FIG. 3, one of which is the joint constituent elements is shown

3 shows a cross section along the line III - III in Figure 2 '

FIG. 4 shows a longitudinal section along the line IV - IV in FIG. 5, the middle element of the Joint is shown

Fig. 5 is a cross-section along the line V-V. in Figure 4

Fig. 6 is an external view of the joint according to Figure in a different angular position

7 shows an overall view, partly in cross section, of the joint of the chair according to the invention in the open position

FIG. 8 shows an overall view of the arrangement according to FIG. 1 seen from a different point

9 shows an overall view of the joint in the inoperative position of the chair, i.e. in the

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folded state of the same

10 is an overall perspective view

of the frame of the folding chair according to the invention, the one with armrests or arm rests

11 is a side view, partly in section, of the joint of the chair according to the invention in the operating position

Fig. 12 is a side view of the joint of the chair according to the invention in the folded up Position.

The joint is particularly suitable for being attached to a collapsible chair, the frame of which has a square element 1 (FIG. 1) which is connected to the inner element of the joint. There is further provided a rectangular member 2, which is U-shaped with the outer element of the joint and with the \ element 3 is connected, the latter what with the middle member of the joint is connected. f

The inner element 4 of the joint (Figures 2 and 3)! consists of an inner core 5 made of steel or iron, the is clad on the outside by transfer molding or pressure spraying with aluminum or a light alloy. An in the middle lying cylindrical part of larger diameter is provided, on which two cylindrical parts laterally Connect egg-shaped training, the diameters are smaller. The tubular elements | attached, which form the frame of the chair 1.

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Also, the central member 6 (Figures 4 to 6) has an inner core 7 made of steel or iron, which by _injection: is coated molding or injection molding with a layer of aluminum or a light alloy ·. The shaft 8 or the socket has a smaller diameter. In this shaft; 8 or socket, the tubular element 3 is used; he; forms the rear support column or support of the chair. :

The inner elements 4 or the middle elements 6 ] of the joint, in which bores are machined, are; penetrated by a pin protruding from the element 2. '■ The member 2 thereby forms the front support of the carrier of the backrest of the chair.

The aforementioned middle element shows two lateral ones; Shoulders, namely the shoulder 9 on one side and | the shoulder 10 on the opposite side. These two '■ shoulders 9, 10 are formed so that they j the Innenelement- and then receive the outer member of the joint, when the chair is thus located inthe operating position, in the open position.

The shoulder 9 (Figure 8) is formed by a lens-shaped projection, which on the outer edge of the middle Element 6 is arranged to give the support of the frame 2 a support when the frame is in a position which corresponds to the operating position of the chair.

The shoulder 10 (Figure 7) also has an angularly curved inner edge to align with one of the two Pages 10 'to support against the inner element 1, which the

forms the inner square of the chair when the chair is in its Operating position, i.e. open position; on the other hand {he supports himself with the other side 10 '· (Figure 9) against the same j Item 1 off when the chair is in its folded up!

Position.

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With such an arrangement and design of the shoulders 9, 10 take the bearings of the lateral elements , the joint into two stable positions, which correspond to the operating position and the inoperative position of the chair. This gives the chair great stability in these positions.

The special arrangement with the smaller diameter segments 4 ¹ , 4 * ^f (Figure 7) of the inner element of the joint ^{at the outer ends allows easy assembly of the parts 1 ', 11 of} the frame of the chair, these parts with Force on the segments 4 ^f , 4 ^{1f be} pulled or pinned on.

The small annular channels of the lugs 11 ', 11 ^IT, which, 4 ¹ at the inner, outer ends of the segments 4 *' are disposed, provide a proper positioning of the tubular members 1 ^1, 1 ¹¹ on the segments confident.

The same also applies to the segment 8 of smaller diameter, which is the central element of the joint belongs to which the tubular element 3 is attached, which as a result of the annular, .kleinen channel 12 on the outer The inner end of the segment 8 fits perfectly against the base of the central element of the joint is supported.

In the embodiment according to FIG. 10 of the drawing, the tubular part 13 - which is the front Support of the chair and the storage of the backrest forms the armrests 14 in an articulated manner. Inside these armrests 14, a guide 15 is arranged in which the rod 16 is slidably movable, which is attached to the inner member of the joint.

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More precisely, the rod 16 (Figure 11) is attached to the middle element 17, which with .dem U-shaped Fitting 18 forms a unit. This fitting forms the rear supports or supports of the chair.

The connection between the rod 16 and the inner element 17 of the joint is obtained by an extension 19, which corresponding to the olive-shaped element 20 from the middle element 17 protrudes. This element 20 forms the stop for the in the operating and inoperative positions Element 13 of the frame.

Figure 12 shows the inoperative position of the chair. From this figure it can be seen that the rod 16 is almost lies parallel to the element 13 of the frame and comes to lie in the immediate vicinity of this element 13. The element 13! superimposed on the two elements 18, 21. This forms the; Element 21 the frame of the chair.

In this way it is possible to convert the collapsible chair into an armchair with armrests, a Fordujig, as it is raised again and again by customers.

It is clear that the framework of the basic concept is not exceeded if the individual parts of the chair, in particular, however, the materials for their production have been modified from the illustrated and described embodiment will.

- patent claims -

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Claims (1)

PATENT CLAIMS 1.) Foldable chair with a joint connecting three elements, a rectangular frame which forms the front support and the support for the backrest of the chair, a square frame which forms the support element of the seat and one that supports the seat
forming U-shaped element, characterized in that the joint consists of three, mitein-; other articulated parts, of which the
one internal part with the frame of the seat, the other is connected in the middle lying member with the rear support of the chair and the outer part forms the] front support and the mounting of the backrest of the j chair, and in that the middle element two shoulders | has which project on opposite sides of this EIe- \ mentes outward to the two lateral elements of the joint J in the operating and non-operating position of the chair i a firm hold to offer. j Chair according to claim 1, characterized in that j draws that the inner elements and the outer j elements of the joint have an inner core made of steel, i which by injection molding with a coating of aluminum! or a light alloy, such that j In this way, this element is extremely robust! is borrowed and to outwardly the characteristics of aluminum | to show. 3. Chair according to claim 1 and 2, characterized
characterized in that each of the inner members and medium \ sized elements of the joint lying at the center of a segment of larger diameter and two segments, and an outboard segment of smaller diameter has, on which ' 409836/0285 those tubular elements pushed on by force
are, which form the frame of the chair, such that
in this way the honing is greatly simplified. 4. Chair according to claim 1 to 3, characterized in that the middle element which is connected to the rear supports of the frame of the chair with
an approach is provided, to which a rod for mounting the armrest is attached and with a, on the armrest attached slider is slidably connected, and that the armrest in turn is articulated with its outer end to that carrier of the frame which is used to support the backrest, such that
in this way the joint on a collapsible leaning. chair with armrests is applicable. 5. Chair according to claim 4, characterized. marked j indicates that from the middle part of the ''. The joint protruding outward on a | olive-shaped element is attached, which is used for the, external support of the frame of the chair in its j two positions, namely the operating position and the ^! Inoperative position, serves as a stop. i 409836/0285 Blank page