DE202020106347U1 - Chair frame - Google Patents

Abstract

Chair frame comprising:
- two support parts (16), opposite to each other and substantially parallel or sub-parallel, each comprising a front leg (18a) and a rear leg (18b), the front leg (18a) and the rear leg (18b) in addition are designed to form a common armrest, these legs (18a, 18b) creating a front angle (A) and a rear angle (C) with the support plane;
- Two support parts (12) for fastening a seat and a backrest to the chair frame (10) in order to enable a person to have a seat in it during use, each support part (12) having a first section (13a) and a second section ( 13b), which run in an opposite manner to one another relative to a center point (P), the support part (12), whereby an angle (E) is formed;
- Two cross members (14) which are essentially parallel or subparallel to one another and are each designed for this purpose, with the respective leg (18a, 18b) of the two support parts (16) and with support parts (12), advantageously at least in the vicinity of the respective support parts (16 ) to be connected, wherein the front leg (18a) and the rear leg (18b) of the support part (16) each form a front angle (B) and a rear angle (D) to the first section (13a), the chair frame thereby is characterized in that the front angle (A) has a value between 76.5 ° and 82 ° and the rear angle (C) has a value between 76.6 ° and 82 °, advantageously the angle (A) has a value between 77, 3 ° and 80 ° and the angle (C) has a value between 77 ° and 80 °.

Description

FIELD OF USE

The embodiments described here relate to a chair frame, in particular a frame of a stackable chair for common rooms and public facilities.

STATE OF THE ART

It is known to have chairs for common rooms and public facilities which are provided with a chair frame to which a seat and a backrest are attached so that a seat means is provided for a person.

In particular, a chair frame comprises two support parts which are continuous in order to also define an armrest in use, which are arranged opposite one another and essentially parallel, each of which comprises a front leg and a rear leg.

The chair frame further comprises two support parts for attaching a seat and a backrest to the frame, the seat and the backrest being designed to provide a person with a seat.

Such a chair is commonly, though not exclusively, used for common rooms and public facilities and is designed to be suitable to be stacked with or without the seat in order to take up little space in storage.

These chairs are used in particular in spaces with public access and / or with a high, and often temporary, flow of people, where it is necessary to provide a large number of chairs to enable the users to sit down.

Such rooms can be, for example, closed rooms, such as conference halls, lecture halls, canteen rooms, theaters, entertainment rooms, exhibition rooms, etc. or open environments, such as meadows or parking lots, etc., in which events can be organized that attract a high number of visitors Bring people with them.

Often the above-mentioned rooms are not equipped with any chairs or, at most, only partially equipped with sufficient chairs to accommodate the intended influx of users, so that it is therefore necessary to have the chairs there by transporting them.

Similarly, a company that manufactures such chairs must also store and transport large numbers of chairs at customers' sites for storage reasons.

Transport is usually done by truck and it is therefore evident that a large number of chairs to be transported can also require a large number of trips.

As the journeys required increase, the direct and indirect costs of transportation increase accordingly.

In addition, the excess travel also contributes to other negative aspects, such as the increase in traffic and the deterioration in air quality, which aspects deserve special attention given that the above spaces can often be located in densely populated areas.

It can also be seen that the storage of such chairs is a factor influencing the administrative costs and the space for the inventory, both on the manufacturer's side and on the user's side.

There is therefore a need to improve the specific chair frame so that it can overcome at least one of the disadvantages of the technology.

In particular, it is an object of the present invention to provide a chair frame which enables its handling to be facilitated.

Another aim of the present invention is to increase the number of chairs to be transported while maintaining the same area of the means of transport, and to reduce transport costs and pollution problems.

Another object of the present invention is to provide a chair frame which enables storage to be optimized and at the same time to maintain the desired stability and security.

In order to overcome the disadvantages of the prior art, and to achieve these, as well as other objects and advantages, the applicant has developed, studied and implemented the present invention.

DISCLOSURE OF THE INVENTION

The present invention is expressed and characterized in the independent claim. The dependent claims explain further Features of the present invention or variants of the main concept.

For the handling processes with means of transport, chair frames are alone or connected to the seat and the backrest, usually stacked in columns or stacks. These stacks can preferably, but not necessarily, be connected in groups of two or more in an embodiment in order to be placed vertically on a pallet and to facilitate its handling and transport.

The pallet advantageously currently has dimensions with a horizontal space requirement which are essentially a multiple of the dimensions with a horizontal space requirement of a current chair frame.

Such space requirements must fall within certain limits so that the pallet can be loaded into the interior of the means of transport, and it is known that the occupancy of the interior of the means of transport must be maximized.

The vertical space taken up by the means of transport is particularly critical because it determines the maximum number of chairs that can be stacked without exceeding the maximum height imposed by the dimensions of the means of transport.

In particular, the known chair frames, either by themselves or connected to the seat and the backrest and stacked, can form stacks of 25 chairs and with a height of up to 2610 mm, whereby an area of approximately 1200 x 1500 mm is occupied when they are on a pallet are arranged in groups of four stacks.

The problem that the present invention seeks to solve is to provide a chair frame which enables stacks of chairs to be formed which take up less space at the base, so that smaller pallets can be used and therefore more pallets can be loaded into a transport vehicle .

The saving of horizontal space according to the invention is obtained without sacrificing the vertical space requirement, which therefore makes it possible to stack a maximum number of 25 chairs for each stack that makes up the pallet.

The essentially unchanged maintenance of the vertical space requirement therefore still makes it possible to obtain pallets which are suitable for loading onto a typical means of transport currently in use.

On the other hand, the saving of horizontal space requirement makes it possible to arrange a higher number of chairs than that which is possible with the frames according to the prior art on the same floor of the transport vehicle or in general on the same available area.

This makes it possible to make best use of the space in the means of transport and the areas that are intended for storage.

It is therefore clear that the present invention aims to enable the transport costs, but also the storage costs, to be reduced considerably compared to known chair frames, because the horizontal space occupied by the stacks of chairs is smaller than that which is has been occupied so far.

In order to reduce the horizontal space requirement, although a substantial vertical space requirement is maintained, the chair frame described here is provided with dimensions, proportions and angles which originate from a new concept of the support structure, which structure aims to overcome the limits of the prior art and correct the above defects.

The invention therefore makes it possible to handle the same number of chairs with fewer transport journeys, enables otherwise smaller means to be used to drive in areas with high traffic and / or on roads that are not allowed to be used by heavy-duty trucks.

Likewise, the invention makes it possible to save space within a warehouse by reducing the space required to store such chairs, thereby reclaiming space that may be dedicated to other uses or for the storage of other material.

In accordance with the above, the chair frame of the present invention is provided with a smaller horizontal space requirement, while the vertical space requirement of the known chair frames is essentially maintained.

This chair frame comprises two support elements, each of which comprises two parallel, spread legs.

According to embodiments, each support element can be continuous, so that it also forms an upper section which can serve as an armrest or a support for an armrest.

The legs mentioned, which are usually supported by two horizontal bars or cross members in Position are attached in cooperation with the upper part of the legs and with the upper elements or support parts intended to support the seat and to position the backrest.

Known chairs of this type usually occupy a horizontal space between approximately 500/520 x 550 mm, ie occupy approximately 0.28 / 0.30 m ² , a space which is larger than a quarter of a square meter.

According to the invention, the following has been found: while maintaining a fixed front-side space requirement and by expediently acting on the splay angles of the parallel legs and / or on the angle of inclination of the upper elements that support the backrest, it is possible to occupy a horizontal space between 0, 25 and 0.22 m ² , with this space varying from a quarter of a square meter to less than a square meter.

It is evident that such a newly achieved area of occupation of a horizontal space makes it possible to obtain stacks with the same horizontal space and that therefore, with the same number of stacks, a reduction in the space required for their arrangement is obtained , which makes it possible to put several stacks in a transport vehicle or in a warehouse.

In this way it is possible, for example, using an embodiment of the present invention, to place four stacks of chairs on a pallet suitable for transport, with a base in the vicinity of 1200 x 1340 mm.

In particular, a chair frame according to the invention comprises two support parts which are opposite to one another and are substantially parallel or sub-parallel, each of which comprises a front leg and a rear leg. The front leg and the rear leg can be designed to form a common armrest. The legs can create a front angle and a rear angle with the support plane.

The chair frame further comprises two support parts for attaching a seat and a backrest to the chair frame in order to enable a person to have a seat therein during use. Each support member includes a first portion and a second portion that are opposite to one another relative to a center point of the support member, thereby forming an angle.

The chair frame further comprises two cross members that are essentially parallel or sub-parallel to one another, each of which is designed to be connected to the respective leg of the two support parts. The two cross members are also advantageously connected with support parts at least in the vicinity of the respective support parts. The front leg and the rear leg of the support part each form a front angle and a rear angle to the first section.

According to embodiments, the chair frame, relative to the support plane, can have the front angle with a value between 76.5 ° and 82 ° and the rear angle with a value between 76.6 ° and 82 °.

The angle can advantageously have a value between 77.3 ° and 80 ° and the angle can have a value between 77 ° and 80 °.

Figure list

• - 1 eine schematische Seitenansicht eines Stuhlgestells gemäß hier beschriebenen Ausführungsformen ist;
• - 2 eine schematische Vorderansicht eines Stuhlgestells gemäß hier beschriebenen Ausführungsformen ist.

These and other aspects, features and advantages of the present invention will become apparent from the following description of embodiments, given by way of non-limiting example, reference being made to the accompanying drawings, where:

• - 1 Figure 3 is a schematic side view of a chair frame according to embodiments described herein;
• - 2 Figure 3 is a schematic front view of a chair frame according to embodiments described herein.

To facilitate understanding, identical reference numbers are used, where possible, to refer to identical common elements in the figures. It should be understood that elements and features of one embodiment can be incorporated in a favorable manner in other embodiments without further explanation.

DESCRIPTION OF EMBODIMENTS

Reference should now be made in detail to the possible embodiments of the invention, one or more examples of which are shown in the accompanying drawings. Each example serves to illustrate the invention and is not to be construed as a limitation thereof. For example, one or more features that are illustrated or described as belonging to one embodiment may be changed or applied to other, or in conjunction with other, embodiments to yield further embodiments. It should be understood that the present invention includes such modifications and variations.

Before describing the embodiments, it is further clarified that the present description is not limited in its application to the details of construction and arrangement of the component, as these are described in the following description using the accompanying figures. The present description is capable of other embodiments and of being practiced or implemented in other different ways. It is further clarified that the phraseology and terminology used here are for the purpose of description and are not to be regarded as limiting.

The embodiments described herein using, for example, 1 and 2 refer to a chair frame 10 which can be made from a steel tube, possibly chrome-plated or painted.

The chair frame 10 includes two support parts 16 that are opposite to one another and are substantially parallel or sub-parallel, each having a front leg 18a and a back leg 18b include. The front leg 18a and the back leg 18b can be designed to form a common armrest. The legs 18a , 18b can make a front angle with the support plane A. and a back angle C. create.

The chair frame further comprises two support parts 12 for attaching a seat and a backrest to the chair frame 10 in order to enable a person to have a seat in it. Every support part 12 includes a first section 13a and a second section 13b that are in opposite ways to each other relative to a center point P of the support part 12 run, whereby an angle E is formed.

The chair frame furthermore comprises two cross members that are essentially parallel or sub-parallel to one another 14th , which are each designed to, with the respective leg 18a , 18b of the two support parts 16 to be connected. The two cross members 14th are also with support parts 12 advantageously at least in the vicinity of the respective support parts 16 connected. The front leg 18a and the back leg 18b of the support part 16 each form a front angle B. and a back angle D. to the first section 13a .

According to embodiments, the chair frame can have the front angle A. with a value between 76.5 ° and 82 ° and the rear angle C. with a value between 76.6 ° and 82 °.

The angle can advantageously A. a value between 77.3 ° and 80 ° and the angle C. can have a value between 77 ° and 80 °.

In known frames, the angles A. and C. a value of 74.6 °.

According to embodiments, each support part 16 continuous, ie in one piece, made and designed so that there is an upper portion 18c which can perform the function of armrest or support of an armrest.

Any top section 18c has two bends, in the end part of which there is a connection area 20th is defined in which the respective front leg 18a and the respective rear leg 18b can connect, which run essentially in a straight line to the contact point with the support plane.

According to embodiments, each upper portion 18c to the side a room 22nd for a seat such that the seat is between each upper section 18c ( 2 ) is included.

The chair frame further comprises two support parts 12 which have a curvature at angle E, around a seat and a backrest on the chair frame 10 to be attached to enable a person to have a seat in it.

In the known frame, the angle E has a value of 106.4 °.

According to embodiments, the frame has the angle E between 94 ° and 103 °.

Every support part 12 can holes 24 have, which are suitable for the seat on the support part 12 with fastening means, for example screws or the like to fasten.

Every support part 12 includes a first section 13a and a second section 13b that are in opposite ways to each other relative to a center point P which essentially defines the center of the curve.

The chair frame also includes two cross members 14th , each having two ends that are designed to with the respective support part 16 to be connected. Every cross member 14th is also designed to work with each support member 12 to be connected at one point, which is between the support parts 16 is comprised of each front leg 18a and each back leg 18b an angle each B. and D. to the first section 13a form.

In the previously known frame, the angle B. and the angle D. each a value of 105.4 °.

According to embodiments, the frame of the invention has the angle B. a value between 97 ° and 104 ° and the angle D. a value between 100 ° and 107 °.

Every support part 12 can be attached to any cross member 14th through the first section 13a be attached so that each support member 12 essentially at right angles to the cross members 14th is.

Embodiments of the present invention make it possible through the novel design of the above-mentioned angles A. , B. , C. , D. and E. and through their different combinations, the horizontal space requirements of the chair frame 10 to reduce.

The chair frame 10 has a maximum space requirement, or length, L1 on.

Typically the length can be L1 be the distance from the point of support of the front leg 18a to the free end of the second section 13b is measured.

In other embodiments, the length can L1 be the distance from the point of support of the front leg 18a up to the point of support of the rear leg 18b is measured.

The previously known frame has a length L1 in the vicinity of 520 mm.

This length L1 is the length that the invention is intended to reduce in order to achieve the purposes outlined.

According to embodiments, the length is L1 between 410 and 470 mm.

Such a length range enables a chair frame 10 to obtain which, in a similar manner to the previously known frame, is suitable to be stacked and to provide a user with a comfortable seat in use, but increases the ability to reduce the space used.

By changing the design of the angles B. and or D. are the angles A. and or C. changed.

By changing the angles B. and or D. is it possible to have a length L2 to change that of the maximum space required on the seat level between the front leg 18a and back leg 18b is defined at the point of contact with the support plane.

The length L2 between each front leg 18th and back leg 18b can be changed by the incidence of each leg 18a , 18b to the connection area 20th any curvature of the top section 18c within the limits of the angles given above B. and D. is set.

This way, the slope of each leg can be adjusted 18a , 18b can be changed while the curvatures of the upper section 18c be kept unchanged.

The previously known frame has a length L2 in the vicinity of 470 mm.

According to embodiments in accordance with the angular ranges of the present invention, the length L2 between 380 and 470 mm, preferably between 380 and 430 mm.

According to embodiments, the width of the angle D. greater than the angle B. by a value between 0.1 ° and 3 °, preferably between 0.5 ° and 3 °, more preferably between 1 ° and 3 °, and even more preferably between 1.5 ° and 2.5 °.

As a result, the sum of the angles C. and D. be greater than 180 °.

With regard to the seating level, the frame has a maximum space requirement, length L3 , between the front position of the support part 12 and the rear position of the same.

According to the invention, the length L1 can be further changed by looking at the length L3 acts.

In the case of the previously known frame, the length L3 a value in the vicinity of 410 mm.

According to embodiments, the present invention can have a length L3 be between 335 and 370 mm.

The length L3 can be done advantageously by adjusting the width of the angle E. be changed.

May be the length L3 also by acting on a length L4 can be changed, essentially the length of the first section 13a can correspond.

In the previously known frame, the length L4 a value in the vicinity of 310 mm.

According to embodiments, the present invention can have a length L4 between 280 and 290 mm.

The reduction in length L3 can with the reduction in length L2 can be combined to fill the space of the horizontal occupation of the chair frame 10 to reduce further.

The length L3 can by acting on a length L5 be further reduced, which is substantially the length of the second section 13b can correspond.

In the previously known frame is the length L5 in the vicinity of 290 mm.

According to embodiments, the present invention can have a length L5 between 265 and 275 mm.

According to embodiments, the cross members are 14th with respect to each central longitudinal axis R by a length L6 separated from each other.

In the previously known frame, the length L6 a value in the vicinity of 200 mm.

According to embodiments, the present invention can have a length L6 between 185 and 190 mm.

According to embodiments, the cross member 14th that with the front leg 18a connected, to be positioned on a level with a height different from that of the cross member 14th is the one with the back leg 18b connected is.

In particular, the cross member is the one with the front leg 18a connected, positioned at a level with a height higher than the cross member 14th is the one with the back leg 18b connected is.

According to embodiments, each cross member defines 14th down a room 22nd .

The cross members 14th may, at the center line of their length, have a curvature that is conveniently designed to accommodate a seat that matches the dimensions and shapes of the room 22nd is compatible.

The chair frame also has a length L7 on that of the distance between two opposite support members 16 is defined. This length L7 can essentially along the course of the support parts 16 ( 2 ) remain constant.

The previously known frame has a length L7 in the vicinity of 550 mm.

According to embodiments, the present invention can have a length L7 between 530 and 540 mm.

Of course, changes can be made and / or parts can be added to the chair frame described so far without, for this reason, deviating from the scope of the present invention as defined by the claims.

It is also to be understood that, although the present invention has been described with reference to a few specific examples, a person skilled in the art can readily realize many other equivalent forms of chair frame having the features defined in the claims and thus all in those defined by the claims Scope of protection.

In the following claims, the reference signs in parentheses are used for ease of reading only and are not to be taken as limiting factors with regard to the scope of protection which is subject to the specific claims.

Claims (11)

Chair frame comprising: - two support parts (16), which are opposite to one another and substantially parallel or sub-parallel, each comprising a front leg (18a) and a rear leg (18b), the front leg (18a) and the rear leg ( 18b) are designed to form a common armrest, these legs (18a, 18b) creating a front angle (A) and a rear angle (C) with the support plane; - Two support parts (12) for fastening a seat and a backrest to the chair frame (10) in order to enable a person to have a seat in it during use, each support part (12) having a first section (13a) and a second section ( 13b), which run in an opposite manner to one another relative to a center point (P), the support part (12), whereby an angle (E) is formed; - Two cross members (14) which are essentially parallel or subparallel to one another and are each designed for this purpose, with the respective leg (18a, 18b) of the two support parts (16) and with support parts (12), advantageously at least in the vicinity of the respective support parts (16 ) to be connected, wherein the front leg (18a) and the rear leg (18b) of the support part (16) each form a front angle (B) and a rear angle (D) to the first section (13a), the chair frame thereby is characterized in that the front angle (A) has a value between 76.5 ° and 82 ° and the rear angle (C) has a value between 76.6 ° and 82 °, advantageously the angle (A) has a value between 77, 3 ° and 80 ° and the angle (C) has a value between 77 ° and 80 °. Chair frame after Claim 1 , characterized in that the angle (E) has a value between 94 ° and 103 °. Chair frame according to one of the preceding claims, characterized in that the angle (B) has a value between 97 ° and 104 ° and the angle (D) has a value between 100 ° and 107 °. Chair frame according to one of the preceding claims, characterized in that the maximum space requirement (L1) is comprised between 410 and 470 mm. Chair frame according to one of the preceding claims, characterized in that there is a length (L2), which is defined by the maximum space requirement on the seat plane, between the front leg (18a) and rear leg (18b) between 380 and 470 mm, preferably between 380 and 430 mm. Chair frame according to one of the preceding claims, characterized in that with regard to the seat plane, the maximum space requirement between the front position of the support part (12) and the rear position of the same has a length (L3) between 335 and 370 mm. Chair frame according to one of the preceding claims, characterized in that the first section (13a) has a length (L4) between 280 and 290 mm. Chair frame according to one of the preceding claims, characterized in that the second section (13b) has a length (L5) between 265 and 275 mm. Chair frame according to one of the preceding claims, characterized in that the two cross members (14) are separated from one another by a length (L6) between 185 and 190 mm with regard to each central longitudinal axis (R). Chair frame according to one of the preceding claims, characterized in that the width of the rear angle (D) is greater than the front angle (B) by a value between 0.1 ° and 3 °, preferably between 0.5 ° and 3 °, in more preferably between 1 ° and 3 °, and even more preferably between 1.5 ° and 2.5 °. Chair frame according to any one of the preceding claims, characterized in that the cross member (14) connected to the front leg (18a) is positioned on a plane with a height different from the cross member (14) associated with the rear leg (18b) is connected.

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