EP2366308B1 - Frame device for an item of furniture - Google Patents

Description

The invention relates to a frame device for a piece of furniture, in particular a frame device for a student's table or a school chair of a school institution, with at least one variable in length adjustable furniture leg.

Furthermore, the invention relates to a table leg for a student's table.

In particular, in connection with the equipment of classrooms or classrooms, etc. with school facilities is increasingly the flexible and needs-based use of furniture, such as chairs or tables, required. In particular, it may be necessary to adapt the respective pieces of furniture, especially chairs and tables, to the respective size of the pupils. There is also an endeavor to design the school furniture pieces also for educational staff, non-educational staff, visitors to schools and for people who visit the school in extracurricular use, with and without disabilities, accessible, usable and adaptable to their individual needs.

To meet these concerns, for example, flexibly shaped furniture pieces are known from the prior art, which are particularly adaptable to the height of users. For example, tables or chairs are known from the prior art, which have a frame device with which the height of the piece of furniture is variably adjustable. In particular, lets you the height of the corresponding piece of furniture, for example, by adjusting the length of the respective furniture legs accomplish. A known from the prior art possibility of variable length adjustment of a furniture leg consists, for example, furniture leg elements relative to each other to move or move and to couple with each other via a latching device. However, in this context there is the problem that in the case of using such a quick connection, like the aforementioned latching connection, the same can unintentionally solve the flexible design or adjustment of the length of the respective furniture leg. This results in an increased risk of injury to the person using the piece of furniture. For example, in the case of the use of latching connections, the case may arise that, in connection with a spring-loaded latching element, for example a spring-loaded pin or bolt, a furniture leg element which engages in a corresponding counter-latching element, for example a recess or recess, in another furniture leg element in that the pin supporting the pin is worn so that the pin automatically disengages from the recess. This can lead to unintentional release of the corresponding furniture leg elements of the furniture leg. Therefore, there is an increased risk of injury in these known from the prior art, adjustable in height, furniture.

A frame device with the features of the preamble of claim 1 is known from US 3 469 870 A known.

The invention is therefore the object of developing the generic frame devices for furniture in such a way that the security against unintentional release is increased with adjustable in length furniture legs.

This object is solved by the features of the independent claim. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

The frame device according to the invention builds on the generic state of the art in that the length of the furniture leg is adjustable via relatively movable and a closure in the manner of a bayonet lock coupled to each other furniture leg elements. On the basis of this inventive design of the coupling or the closure of the corresponding furniture leg elements of a single furniture leg, the safety of the coupling against unintentional release can be significantly increased. By the Closure in the manner of a bayonet catch, the connection can be solved quickly and easily, but nevertheless an increased security of the connection is ensured. One of the furniture leg elements, which is pushed over the other of the furniture leg elements, for example, may have a longitudinal slot into which open a plurality of short transverse slots spaced substantially in the longitudinal direction of the longitudinal slot. The other of the furniture leg elements, however, may have a projection or a pin, which may be formed in particular in the form of a button, wherein the projection is guided through the longitudinal slot and is inserted to lock both furniture leg elements together in a corresponding transverse slot. As a result, a solid and secure connection can be achieved. Thus, the fixed connection is achieved by a plug-in and subsequent rotational movement of the respective furniture leg elements. In other words, the furniture leg elements are initially nested, wherein the desired positioning of the furniture leg elements in the longitudinal direction, a subsequent rotation of a furniture leg element is made so that the pin is inserted into the corresponding transverse slot. In addition, in order to increase the security of this closure in the manner of a bayonet lock, a latching connection can furthermore be provided, so that the pin inserted into the transverse slot is additionally pushed into a detent pin detent over the transverse slot; For example, the Raststiftarretierung be formed by a curved thin plate, which is arranged at the respective transverse slots and under which the pin of the furniture leg member can be pushed latching. Due to the fact that in addition to the plug movement, a rotational movement of the respective furniture leg elements to their mutual attachment, increased security against unintentional release of the furniture leg elements is ensured. Unintentional release of the closure on the type of bayonet lock can thus be avoided, even if a frequent adjustment of the length of the corresponding furniture legs is made.

A first furniture leg member is formed by a tubular member forming a first portion of the closure and a second furniture leg member is formed by a tubular member forming a second portion of the closure coupled to the first portion. Thus, a part of the closure is provided on the first furniture leg element in the manner of the bayonet closure, for example, the longitudinal slot and the transverse slots, while the other part of the closure is provided on the second furniture leg element in the manner of the bayonet closure, for example one or more pins or projections.

In addition, the frame device according to the invention can be realized so that the first portion of the closure is at least partially formed by a first recess extending in the longitudinal direction of the first furniture leg element and a plurality of longitudinally spaced second recesses extending transversely to the longitudinal direction and opening into the first recess. Accordingly, a closure is achieved in the manner of a bayonet closure, with which a plurality of different lengths of the furniture leg according to the number of transverse recesses and by a suitable selection of the distance of the transverse recesses can be variably adjusted. Preferably, the longitudinal and transverse recesses are in the form of slots, as explained above.

Furthermore, the frame device according to the invention can be formed such that the second portion of the closure at least one perpendicular to the longitudinal direction of the second furniture leg element extending Protrusion engageable with the first portion for locking the second portion. As mentioned above, a latching device may additionally be provided on the first section into which the projection of the second section engages, after the projection has been arranged in the corresponding transverse recess. Preferably, the projection is formed in the form of the aforementioned button. Of course, it is also conceivable that a plurality of projections formed in the form of buttons are provided, which each engage in a corresponding transverse recess. As a result, the stability of the variably adjustable furniture leg can be further increased.

Furthermore, the frame device according to the invention can be implemented so that the first furniture leg member is formed as a hollow tubular member which receives the sleeve formed as a second furniture furniture element. In this case, it is preferred that the hollow tubular first furniture leg element comprises the first section having the longitudinal and transverse recesses. On the other hand, the second furniture leg element designed as a sleeve comprises the second section, which has the pin guided through the longitudinal recess, which can be engaged with a corresponding transverse recess of the first section.

Furthermore, the frame device according to the invention can be embodied such that the first furniture leg element comprises a scale which indicates a plurality of different furniture leg length ranges relative to different body size ranges, and the third furniture leg element comprises means dependent on the relative positional relationship between the first furniture leg element and the third furniture leg element marked a corresponding furniture leg length range of the scale. For example, the scale can be designed according to DIN EN 1729-1, which is a table for rough orientation for the provision of furniture, in particular chairs and tables for educational institutions. Accordingly, the scale can be subdivided into corresponding color areas, wherein each color area is assigned to a specific body size area, preferably a student, etc. Thus, the students who know their color coding associated with their size, can make the appropriate height adjustment of the chair or table itself. The marking of the scale can be made, for example, via a viewing window provided in the third furniture leg element, which is formed for example by a hole at a suitable location in the third furniture leg element; it is also conceivable that the marking of the scale on the basis of the edge of the third furniture leg element, which receives the first and the second furniture leg element takes place; namely the fact that the edge of an opening for receiving the first furniture leg element acts as a corresponding mark on the scale.

The third furniture leg element is designed as a hollow tubular element which at least partially accommodates the first furniture leg element and the second furniture leg element. In this way, the closure in the manner of the bayonet closure is completely covered by the third tubular tubular furniture leg element, whereby the risk of injury to students on the closure on the type of bayonet closure, such as the risk of injury, starting from the provided on the first furniture leg element recesses, can be reduced.

The second furniture furniture element may be firmly connected to a frame element and the first furniture furniture element may be movably mounted relative to the frame element. Preferably is formed as a sleeve second furniture leg member fixedly connected to the frame member of the frame device of the furniture, for example via an axially extending coupling. It is also conceivable that the sleeve formed as a second furniture leg element is coupled via a transverse to the longitudinal direction of the second furniture leg element coupling with the third furniture leg element. In this case, it is necessary to provide the first furniture leg element with a corresponding recess for the transverse coupling, so that the first furniture leg element can still move axially and rotationally for fixing with the second furniture leg element formed as a sleeve.

Furthermore, the frame device according to the invention can be configured such that the furniture leg is designed such that its length adjustment can be made exclusively in different predetermined body size ranges. Accordingly, the corresponding height adjustment of the respective furniture is easy to perform just by the color assignment based on the scale. Since the length adjustment can thus be made exclusively in different predetermined body size ranges, ie just not continuously, the students can make the appropriate height adjustment to the piece of furniture itself according to their respective color coding. Of course, it is necessary in this case to set the spacing of the transverse recesses accordingly, so that the length of the furniture leg can be adjusted only in the body size ranges displayed in the scale.

In addition, the frame device according to the invention can be configured so that the frame device is formed by a table frame or chair frame for school facilities.

Furthermore, the frame device according to the invention can be realized such that a transverse or longitudinal strut of the frame device forming profile part is designed such that the profile part support Tischzubehöranbauteile and / or can lead along an extension direction of the profile part. Preferably, the profile part is designed with a C-shaped cross section, so that attachments for table accessories in the C-shaped profile part can be hung quasi quasi. Accordingly, the C-shaped profile part supports these attachments. Furthermore, the attachments can be guided and / or moved by the C-shaped profile part along the extension direction of the profile part, whereby the piece of furniture is flexibly adaptable to the needs of the user.

Furthermore, the frame device according to the invention can be carried out so that on the furniture leg means for moving the piece of furniture, preferably rollers or sliders, are provided, wherein preferably a locking device is provided by which the mobility of the furniture is prevented or permitted. Preferably, rollers or sliders are arranged at one end of each furniture leg of the piece of furniture, whereby the piece of furniture is movable. In order to prevent unintentional movement of the piece of furniture, a locking device known to those skilled in the art can be provided, by means of which, for example, the rollers can be locked or released in order to prevent or allow a movement of the piece of furniture.

Preferred embodiments of the invention are explained below by way of example with reference to FIGS.

• Fig. 1 eine Seitenansicht eines Möbelstücks mit einer erfindungsgemäßen Rahmenvorrichtung gemäß einem ersten Ausführungsbeispiel der Erfindung;
• Fig. 2 eine vergrößerte Darstellung eines Möbelbeins der Rahmenvorrichtung von Fig. 1;
• Fig. 3 eine Frontansicht des Möbelstücks von Fig. 1;
• Fig. 4 eine vergrößerte Darstellung eines Ausschnitts des Möbelstücks von Fig. 3;
• Fig. 5 eine Seitenansicht eines Möbelstücks mit einer erfindungsgemäßen Rahmenvorrichtung gemäß einem zweiten Ausführungsbeispiel der Erfindung;
• Fig. 6 eine Seitenansicht eines Möbelstücks mit einer erfindungsgemäßen Rahmenvorrichtung gemäß einem dritten Ausführungsbeispiel der Erfindung.

Show it:

• Fig. 1 a side view of a piece of furniture with a frame device according to the invention according to a first embodiment of the invention;
• Fig. 2 an enlarged view of a furniture leg of the frame device of Fig. 1 ;
• Fig. 3 a front view of the furniture of Fig. 1 ;
• Fig. 4 an enlarged view of a section of the piece of furniture of Fig. 3 ;
• Fig. 5 a side view of a piece of furniture with a frame device according to the invention according to a second embodiment of the invention;
• Fig. 6 a side view of a piece of furniture with a frame device according to the invention according to a third embodiment of the invention.

Fig. 1 shows a side view of a piece of furniture with a frame device 10 according to the invention according to a first embodiment the invention. In the case shown, the piece of furniture is a table, in particular a student table, with a frame device 10 designed as a table frame for a school device. The frame device 10 according to the invention comprises four furniture legs 12, in particular table legs which are variably adjustable in their length, whereby the table is variably adjustable in height. Furthermore, the frame device 10 comprises longitudinal and transverse struts which connect the corresponding furniture legs 12 in a manner known to those skilled in the art. Preferably, the transverse struts or transverse members extending in the width direction of the table are designed as steel tubes with a rectangular cross section. By contrast, the longitudinal beams extending in the longitudinal or depth direction are designed as C-profile-shaped metal pipes. The longitudinal and transverse members are preferably welded to the table leg 12, in particular a third furniture leg element 20 explained in greater detail below. Further, a table or worktop is arranged on the frame device 10 designed as a table frame and attached to the same.

For adjusting the length of the furniture leg and thus for height adjustment of the piece of furniture, in particular the table, the frame device 10 according to the invention comprises corresponding furniture legs 12, which relative to each other and movable via a closure 14 in the manner of a bayonet lock coupled furniture leg elements 16, 18, as hereinafter in connection with Fig. 2 will be discussed in more detail.

Fig. 2 shows an enlarged view of a furniture leg 12 of the frame device 10 of Fig. 1 , How out Fig. 2 it can be seen, formed as a table leg furniture leg 12 comprises a first furniture leg member 16 which is formed by a hollow tubular member and having a first portion 26 of the closure 14, and a second Furniture leg member 18, which is formed by a tubular, embodied as a sleeve element and comprising a first section 26 coupled to the first portion 26 and leading second section 28 of the closure 14. The designed as a hollow tubular element first furniture leg member 16 takes the second furniture leg member 18 formed as a sleeve completely, wherein formed as a sleeve furniture leg member 18 may be coupled for example with a not further described frame portion of the frame device 10, in particular by a coupling extending in the axial direction. In the illustrated case, however, the furniture leg element 18 designed as a sleeve is coupled via locking screws 30, 32 to a third furniture leg element 20 described in more detail below. Thus, the second furniture leg member 18 formed as a sleeve is fixed with respect to the third furniture leg member 20 of the frame device 10, while the first furniture leg member 16 is movable relative to the formed as a sleeve furniture leg member 18 and the frame portion of the frame device 10 along its longitudinal axis.

The first portion 26 of the closure 14, which is formed on the first furniture leg member 16, by a extending in the longitudinal direction of the furniture leg member 16 first recess, preferably a longitudinal slot, and a plurality of longitudinally spaced, transversely extending to the longitudinal second opening into the first recess second recesses , preferably transverse slots, at least partially formed. Preferably, the longitudinal slot and the respective transverse slots are milled into the first furniture leg element 16.

The second portion 28 of the closure 14 of the second furniture leg member 18 is formed by a perpendicular to the longitudinal direction of the second furniture leg member 18 extending projection or locking pin 28 which is connected to the first portion 26 for locking the first furniture leg member 16 is engageable; In particular, the first furniture leg element 16 can be limitedly moved by means of the longitudinal recess and the corresponding transverse recesses by the locking pin provided in the corresponding recesses. Furthermore, the second furniture leg element 18 embodied as a sleeve can have the aforementioned tightening screws or locking screws 30, 32, which serve for fixing the second furniture leg element 18 formed as a sleeve to the third furniture leg element 20. On the basis of the clamping screws 30, 32 formed as a sleeve furniture leg member 18 is pressed against an inner wall of the furniture leg member 16, whereby the furniture leg member 16 is in turn pressed against an inner wall of the third furniture leg member 20 described in more detail below. Accordingly, formed as a sleeve furniture leg member 18 is formed a loosely inserted into the furniture leg member 16 sleeve which is held by the locking screws 30, 32 and the basis of the locking pin 28, the first furniture leg member 16 via the corresponding recesses. The locking screws 30, 32 are preferably arranged on the furniture leg element 18 designed as a sleeve such that they extend through corresponding recesses of the first furniture leg element 16. Accordingly, the locking screws 30, 32 act in the illustrated case, at least as a fixation of the formed as a sleeve furniture leg member 18 on the third furniture leg member 20, while the locking pin for locking the first furniture leg member 16 on the second furniture leg member 18 formed as a sleeve.

As further out Fig. 2 it can be seen, the first furniture leg member 16 comprises a scale 34, which displays several different furniture leg length ranges based on different body size ranges according to DIN EN 1729-1. To mark the scale 34 and to cover the entire closure 14 is another or the aforementioned third furniture leg member 20 is provided, which will be explained in more detail below.

The third furniture leg element 20 takes in the illustrated case, the first and the second furniture leg member 16, 18 at least partially. In particular, the third furniture leg element 20 receives the first furniture leg element 16 at least partially (in the partially extended position) as a function of its position or completely (in the fully retracted position). In other words, the first furniture leg element 16 dips into the third furniture leg element 20, corresponding to the position of the first furniture leg element 16 in different insertion depth. Furthermore, the third furniture leg member 20 takes the fixed formed as a sleeve second furniture leg member 18 completely. A lower edge or a lower edge portion (as seen in FIG FIG. 2 ) of the third furniture leg element 20 serves to mark a corresponding body size range of the scale 34 as a function of the relative positional relationship between the first furniture leg element 16 and the second furniture leg element 18. In addition, remaining portions of the third furniture leg member 20 to cover the closure 14 in the manner of a bayonet closure, In addition, in the third furniture leg member 20 corresponding holes for the above-described tightening screws 30, 32, which fix the formed as a sleeve furniture leg member 18, suitable Job provided.

How to continue Fig. 2 can be seen and mentioned above, takes the third furniture leg member 20 as a hollow tubular member, the second furniture leg member 18 completely and the first furniture leg member 16 according to its positioning at least partially. When the first furniture leg element 16 is arranged in its fully retracted position, the third furniture leg element 20 receives the first furniture leg element almost completely. Is the first furniture leg element 18, however, in an extended position, the further or third furniture leg element 20 marks the corresponding body size range of the scale 34 and at the same time surrounds the closure 14 in the manner of the bayonet closure, whereby the security against injury by the bayonet lock is increased.

As mentioned above, the second furniture leg element 18 designed as a sleeve is preferably coupled to the third furniture leg element 20 via the clamping screws 30, 32 explained above. However, it is also conceivable for the furniture leg element 18 designed as a sleeve to connect an axially extending coupling to the frame section of the frame device 10. Furthermore, it is also conceivable that formed as a sleeve second furniture leg member 18 is fixedly connected to the other third furniture leg member 20 via another coupling. In this case, it is necessary to provide additional recesses in the first furniture leg element 16 surrounding the second furniture leg element 18 such that its rotatability and axial displaceability for fixing via the closure in the manner of a bayonet closure can nevertheless be ensured.

In particular, can Fig. 2 Furthermore, it can be seen that the transverse recesses of the first portion 26 are spaced apart such that the length adjustment of the furniture leg 12 can be made only in different predetermined body size ranges corresponding to the scale 34.

Fig. 3 shows a front view of the piece of furniture Fig. 1 , As can be seen, the frame device 10 of the invention further comprises a profile part 22 which is provided in a strut of the frame device in a manner known to those skilled in the art, which connects the corresponding furniture legs 12 together.

Fig. 4 shows an enlarged view of the profile part 22 of the piece of furniture Fig. 3 , The profile part 22 is formed as a C-profile and in the illustrated case as a longitudinal strut or perpendicular (perpendicular to the width direction of the piece of furniture) and designed such that the frame device 10 of the school table more devices can be coupled to the C-profile. Such devices may be, for example, structures for laboratory work, shelves, screens, storage baskets, etc. Preferably, these structures can be slidably guided along a horizontal direction through the C-profile.

Fig. 5 shows a side view of a piece of furniture with a frame device 10 according to the invention according to a second embodiment of the invention. The furniture of the Fig. 5 differs from that of the first embodiment only in that rollers 24 are provided exclusively on the right furniture legs 12, but not on the left furniture legs 12, so that the piece of furniture or the table can be moved in the manner of a wheelbarrow.

Fig. 6 shows a side view of a piece of furniture with a frame device 10 according to the invention according to a third embodiment of the invention. The furniture of the Fig. 6 differs from that of the first embodiment only in that all furniture legs 12 are provided with rollers 24, so that the piece of furniture can be easily moved without having to raise the furniture on one side.

In connection with the FIGS. 5 and 6 It should be noted that instead of rollers 24 also glides, especially furniture or chair glides can be used on the furniture legs 12. Furthermore, it is conceivable that the rollers 24 or sliders can be provided with or without a braking device, wherein the braking device serves to determine either the rollers 24 or with the sliders so cooperate, that a method of the piece of furniture is prevented, or release the rollers 24 and sliders, so that the piece of furniture 12 can be moved on the rollers 24 and the sliders.

LIST OF REFERENCE NUMBERS

10

frame device

12

furniture leg

14

Closure in the manner of a bayonet closure

16

first furniture leg element

18

second furniture leg element

20

third furniture leg element

22

C-section

24

roll

26

first section of the closure

28

second section of the closure

30

clamping screw

32

clamping screw

Claims (8)

1. A frame device (10) for an item of furniture with at least one furniture leg (12) that can be variably adjusted with respect to its length, wherein the length of the furniture leg (12) can be adjusted by means of furniture leg elements (16, 18) that can be moved relative to one another and coupled to one another by means of a coupling (14) realized in the form of a bayonet-type coupling, wherein a first furniture leg element (16) is realized in the form of a hollow tubular element that forms a first section (26) of the coupling (14) and receives a second furniture leg element (18) realized in the form of a sleeve, wherein the second furniture leg element (18) forms a second section (28) of the coupling (14) that can be coupled to the first section (26), wherein a third of furniture leg element (20) is provided and realized in the form of a hollow tubular element that at least partially receives the first furniture leg element (16) and the second furniture leg element (18), and wherein the second furniture leg element (18) is coupled to the third furniture leg element (20) in such a way that the second furniture leg element (18) is stationary referred to the third furniture leg element (20) and the first furniture leg element (16) is movable referred to the second furniture leg element (18), characterized in that the second furniture leg element (18) is coupled to the third furniture leg element (20) by means of locking screws (30, 32) that extend through corresponding recesses of the first furniture leg element (16).
2. The frame device (10) according to Claim 1, characterized in that the first section (26) of the coupling (14) is at least partially realized in the form of a first recess that extends in the longitudinal direction of the first furniture leg element (16) and several second recesses that are spaced apart in and extend transverse to the longitudinal direction and end in the first recess.
3. The frame device (10) according to Claim 1 or 2, characterized in that the second section (28) of the coupling (14) comprises at least one projection that extends perpendicular to the longitudinal direction of the second furniture leg element (18) and can be engaged with the first section (26) in order to lock the second section (28).
4. The frame device (10) according to one of Claims 1 to 3, characterized in that the first furniture leg element (16) comprises a scale that indicates several different furniture leg length ranges referred to different body size ranges, and in that the third furniture leg element (20) comprises means that mark a corresponding furniture leg length range of the scale in dependence on the relative position between the first furniture leg element (16) and the third furniture leg element (18).
5. The frame device (10) according to one of Claims 1 to 4, characterized in that the furniture leg (12) is realized in such a way that its length can only be adjusted in different predefined body size ranges.
6. The frame device (10) according to one of Claims 1 to 5, characterized in that the frame device is realized in the form of a desk frame or chair frame for school furniture.
7. The frame device (10) according to one of Claims 1 to 6, characterized in that a profile part forming a lateral or longitudinal brace of the frame device (10) is realized in such a way that the profile part can support and/or guide accessory desk attachments along a longitudinal direction of the profile part.
8. The frame device (10) according to one of Claims 1 to 7, characterized in that means for moving the item of furniture, preferably castors (24) or gliders, are provided on the furniture leg (12), wherein a locking device is preferably provided for disabling or enabling the mobility of the item of furniture.

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