EP1295545B1 - Connection device for table system - Google Patents

Abstract

The connection comprises a movable unit (10) preferably positioned on the table leg. A clamping piece (14) which turns on the longitudinal axis of the movable unit joins the table leg and table-top. An immovable unit positioned on the table-top has an engaging part with an opening and into which engaging part the clamping piece at least partly fits through the opening. The clamping part turns into two positions so that the movable unit is tightly clamped on the immovable unit.

Description

The present invention relates to a connecting device for Connecting a table leg with a table top and on a table system.

In US-A-5 232 303 there is already a connection device become known according to the preamble of claim 1.

There are table systems known in which a table leg over a Connecting device is attached to a table top. Here are For example, recesses in the table top with appropriate Projections of the table leg or the connecting device with each other in Engaged and subsequently locked. The latching can with the help of a Tool be performed.

However, such table systems of the prior art have the disadvantage that the Assembly is cumbersome and expensive.

It is an object of the present invention to provide a connection device for Connecting a table leg with a table top and a table system to provide, which allows a simple construction of the table system.

This object is achieved by a connecting device with the claim 1 specified features and a table system with the in claim 14 specified characteristics.

Preferred embodiments of the present invention are the contents of dependent subclaims.

According to the invention, a connecting device for connecting a Table leg provided with a table top, wherein the connecting device a movable unit and a stationary unit. The mobile one Unit is preferably in or on the table leg anordbar and has a to the Longitudinal axis of the movable unit rotatable clamping member for connecting the Table leg with the tabletop on. The immovable unit is preferably in or formed or arranged on the table top and has an at least partially undercut engagement area with an opening into which the clamping part the movable unit is at least partially insertable through the opening. The Clamping part can be brought by a rotational movement in a first position, so that the clamping member at least partially engages behind the engagement region and further Can be brought by axial movement in a second position, so that the movable Unit is fixed or clamped to the immovable unit.

Due to the fact that the clamping part of the movable unit during assembly of a Table top with a table leg is first brought into the first position becomes achieved a first positioning of the table leg relative to the table top. The Table leg is hereby already fixed to the table top. However, the tabletop can within a certain margin of the table leg become. Thus, the tabletop can be aligned exactly with respect to the table leg become. After the alignment process is completed, the clamping part is replaced by a Axial movement brought into the second position, in which the table leg now immovably connected to the table top.

Preferably, the clamping member by a rotation of 30 ° to 60 °, most preferably about 45 °, can be brought to the first position. Thus, already by a short rotation of the table leg are fixed to the table top.

In a preferred embodiment, the clamping part has respect to its Partially substantially the shape of a rectangle, the outer circumference at least one corner is bevelled. Preferably, at least on the table leg a stop provided so that the at least one bevelled corner of Clamping part after the rotational movement of the clamping member abuts this. By the Provision of the chamfered corner of the clamping part and the stop, the Rotary movement of the clamping part to be limited safely.

Preference is given to two corners of the clamping part, which are preferably diagonal opposite, beveled, and two substantially opposite one another Attacks are provided. Furthermore, the clamping part is preferably between provided for the attacks. Characterized in that the clamping part between the Stops is provided, the clamping part can be safe from damage, for example, during assembly or storage, protected become.

The inner circumference of the opening of the stationary unit preferably corresponds such as the limited by the outer contour of the attacks form.

In a preferred embodiment, the movable unit further comprises a Thread dome with an external thread, the external thread with a engages on or formed in the clamping part formed thread to the Allow axial movement of the clamping part. By providing the interlocking thread on the threaded mandrel and the clamping part can Up and down movement of the clamping part on the threaded dome after the Rotary movement of the clamping part can be ensured.

Preferably, the formed on the threaded dome and on the clamping part Thread trapezoidal thread. By providing trapezoidal threads, the required rotation of the threaded mandrel to the clamping part in the required position to bring, advantageously be reduced.

Preferably, the threaded mandrel has a laterally at one of its longitudinal ends projecting contact surface on which the clamping part as long as frictionally abuts until the rotational movement of the clamping part is completed. Thus, can sure to be ensured that initially the required rotational movement of the Clamping part is performed and only then the axial movement of the Clamping part begins.

In a preferred embodiment, the pitch of the thread is such formed, that the clamping part by a rotation of the threaded mandrel by 120 ° to 150 °, preferably about 135 °, can be brought from the first to the second position. Thus, preferably, in interaction with the short rotational movement of Clamping part, the locking or locking or fixing the table leg to the Table top can be done by a short turn of the threaded mandrel, which This results in that the table leg can be quickly mounted on the table top. Most preferably, the total rotation of the threaded mandrel is up to must be performed to lock the clamping part, 180 °.

Furthermore, the movable unit preferably has a plastic made Brake on to the clamping part when opening the connection by friction to hold in an undercut position until the clamping part of the second in the first position. The fact that the clamping part as long held in the undercut position until the clamping part of the second to the first position, i. from the specified state to a detached one Condition has been brought, it can be ensured that the table leg still fixed to the table top. Thus, the disassembly can also of the table leg and table top are carried out easily and safely.

In a preferred embodiment, the movable unit further comprises a Turn handle on. Preferably, the rotary handle is coupled to a first gear and the threaded mandrel preferably at its opposite the contact surface End coupled with a second gear, wherein the first gear and the Engage second gear so that rotation of the rotary handle on the Thread dome is transmitted. Preferably, the first gear is to the Casting handle. In a preferred embodiment, the two Gears be designed so that a lower or translation during rotation takes place.

By providing the two intermeshing gears it is possible to that the rotary handle is not arranged on the same axis as the threaded mandrel have to be. Thus, the rotary handle, for example, advantageously further to the center of Table top are arranged, although the clamping member relatively close relative the tabletop edge can be arranged.

Preferably, the rotary handle is configured to a dissolved state and to indicate a fixed state of the connection device. For this purpose can For example, the rotary handle prefers one of a round plate projecting portion. Preferably, the projecting Section elongated and is arranged diametrically on the circular plate. Further, the width of the rotary handle may be widened to one side or his Height can be reduced to one side, preferably one Combination of broadening the width and decreasing the height of the Rotary handle provided.

According to the invention, there is further provided a table system which comprises at least one table top and at least one table leg, wherein the at least one table top and the at least one table leg by at least a connecting device as described above are connectable.

Preferably, the immovable unit comprises a recess in the at least a table top, wherein the recess is designed such that a Rotation of the clamping part is allowed therein. Furthermore, the immovable Unit preferably a recess of the at least one table top covering plate, wherein the opening is provided in the plate. Thus, can the immovable unit can be easily formed by the recess is formed for example by milling in the table top, and the recess covering the plate, which for example made of metal can be prepared, preferably screwed or glued to the table top.

In a preferred embodiment, this has at least one table leg the end to be connected to the table top on a connecting portion, in or on which the movable unit of the connecting device can be arranged is. Thus, the operability of the connection device can be improved.

Preferably, the connecting portion is configured such that two movable Units can be arranged in it. Preferably, the two are movable Units arranged at an angle of 45 ° to each other. Further preferred points the table system at least two tabletops. By providing two movable units in a connecting portion of a table leg can For example, two table tops are connected by a table leg. Consequently can advantageously different arrangements of table tops and Table legs can be achieved.

Fig.1

eine perspektivische Ansicht der beweglichen Einheit der Verbindungseinrichtung gemäß einer bevorzugten Ausführungsform der Erfindung;

Fig. 2

eine Schnittansicht des Gewindedorns der beweglichen Einheit der erfindungsgemäßen Verbindungseinrichtung;

Fig. 3A

eine Schnittansicht des Klemmteils der beweglichen Einheit der erfindungsgemäßen Verbindungseinrichtung;

Fig. 3B

eine Unteransicht des in Fig. 3A gezeigten Klemmteils;

Fig. 4A

eine Schnittansicht des Bremsteils der beweglichen Einheit der erfindungsgemäßen Verbindungseinrichtung;

Fig. 4B

eine Aufsicht des in Fig. 4A gezeigten Bremsteils;

Fig. 5A

eine Schnittansicht des zweiten Zahnrads der beweglichen Einheit der erfindungsgemäßen Verbindungseinrichtung;

Fig. 5B

eine Aufsicht des in Fig. 5A gezeigten zweiten Zahnrads;

Fig. 6A

eine Seitenansicht des Drehgriffs und des ersten Zahnrads der beweglichen Einheit der erfindungsgemäßen Verbindungseinrichtung;

Fig. 6B

eine Unteransicht des in Fig. 6A gezeigten Drehgriffs;

Fig. 7A

eine Schnittansicht einer Tischplatte mit einer unbeweglichen Einheit gemäß einer bevorzugten Ausführungsform der Erfindung darin;

Fig. 7B

eine Aufsicht einer abdeckenden Platte der unbeweglichen Einheit einer Verbindungseinrichtung gemäß einer bevorzugten Ausführungsform der Erfindung;

Fig. 8A

eine Aufsicht eines Verbindungsabschnitts gemäß einer bevorzugten Ausführungsform der Erfindung;

Fig. 8B

eine perspektivische Ansicht eines Verbindungsabschnitts gemäß einer bevorzugten Ausführungsform der Erfindung von oben;

Fig. 8C

eine perspektivische Ansicht eines Verbindungsabschnitts gemäß einer bevorzugten Ausführungsform der Erfindung von unten;

Fig. 9A

eine teilweise Prinzipschnittansicht, welche die Verbindungseinrichtung gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung zeigt, wenn diese in die erste Position gebracht wurde; und

Fig. 9B

eine teilweise Prinzipschnittansicht, welche die Verbindungseinrichtung gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung zeigt, wenn diese in die zweite Position gebracht wurde.

Other objects, features and advantages of the present invention will become apparent from the exemplary description of a preferred embodiment with reference to the drawings. Show it:

Fig.1

a perspective view of the movable unit of the connecting device according to a preferred embodiment of the invention;

Fig. 2

a sectional view of the threaded mandrel of the movable unit of the connecting device according to the invention;

Fig. 3A

a sectional view of the clamping part of the movable unit of the connecting device according to the invention;

Fig. 3B

a bottom view of the clamping member shown in Figure 3A;

Fig. 4A

a sectional view of the braking member of the movable unit of the connecting device according to the invention;

Fig. 4B

a plan view of the brake member shown in Figure 4A;

Fig. 5A

a sectional view of the second gear of the movable unit of the connecting device according to the invention;

Fig. 5B

a plan view of the second gear shown in Figure 5A;

Fig. 6A

a side view of the rotary handle and the first gear of the movable unit of the connecting device according to the invention;

Fig. 6B

a bottom view of the rotary handle shown in Figure 6A.

Fig. 7A

a sectional view of a table top with a stationary unit according to a preferred embodiment of the invention therein;

Fig. 7B

a plan view of a covering plate of the immovable unit of a connecting device according to a preferred embodiment of the invention;

Fig. 8A

a plan view of a connecting portion according to a preferred embodiment of the invention;

Fig. 8B

a perspective view of a connecting portion according to a preferred embodiment of the invention from above;

Fig. 8C

a perspective view of a connecting portion according to a preferred embodiment of the invention from below;

Fig. 9A

a partial schematic sectional view showing the connecting device according to a preferred embodiment of the present invention, when it has been brought into the first position; and

Fig. 9B

a partial schematic sectional view showing the connecting device according to a preferred embodiment of the present invention, when it has been brought to the second position.

Fig. 1 shows a perspective view of a preferred embodiment of a movable unit of the connecting device of the present invention. FIG. FIGS. 2 to 6B show sectional and top views of parts of the movable ones Unit of FIG. 1.

Hereinafter, the movable unit will be referred to with reference to Figs. 1 to 6B described.

The movable unit 10 includes a threaded mandrel 12, a clamping member 14, a Brake member 16, a first gear 18, a second gear 20 and a rotary handle 22nd

The threaded dome 12 is preferably threaded along its longitudinal side a trapezoidal thread 24, provided. At one of its longitudinal ends, the Thread dome 12 has a radially outwardly extending abutment surface 26. At its other longitudinal end of the mandrel 12 is tapered and has a Square 28 on. Furthermore, the threaded mandrel 12 with a Through hole 30 provided in the longitudinal direction. Is preferred in the Through hole 30 provided a thread. The threaded mandrel 12 is preferably made of free-cutting steel or a cast alloy, but wherein also other suitable materials can be used.

The clamping member 14 has substantially the shape of a cylinder 32, on which a substantially rectangular portion 34 has been placed. Preferably two diagonally opposite corners 36 of the rectangular or square Section 34 are chamfered. The bevel of the corners 36 is preferred designed such that a side which is adjacent to the corner 36 on is bevelled than the other side, which is adjacent to the corner 36. Thus is the bevels of the corners are essentially asymmetrical in themselves, wherein both corners bevelled in the same way and point-symmetrical to each other to the axis of rotation of the clamping member 14 are. The preferred two non-bevelled Corners 37 are in the direction of the cylinder 32 extending projections 35th which are rounded at their sides facing the center to a partial circle with a certain radius around the axis of rotation of the Form clamping part 14. The clamping part 14 is preferably made of free-cutting steel or a cast alloy. However, there may be others as well suitable materials are used.

Furthermore, the clamping part 14 has a through hole with a Internal thread 38, wherein the thread 38 is designed such that it with matches the thread 24 of the threaded mandrel. When the thread 24 of the Threaded mandrel 12 is designed as a trapezoidal thread, the thread 38 of Clamping part 14 also designed as a trapezoidal thread.

The brake member 16 has substantially the shape of a cylinder 40, which in the upper area is widened to the shape of a rectangle or square of which preferably two are diagonally opposite one another Corners 42 are bevelled. The bevel of the corners 42 of the brake member 16 is essentially symmetrical. Preferably, the bevel is also outward or curved convexly, wherein the curvature preferably the curvature of a Circle around the center of the brake member 16 with a corresponding radius equivalent. At the non-tapered corners of the brake member 16 are preferred Projections 43 provided (Fig. 1). The outer diameter of the cylinder is preferably slightly smaller than the diameter of the circle, which through the Inner sides of the projections 35 is formed. The clamping member 14 is also with a through hole 44 is provided, the inner diameter of the Outer diameter of the cylinder 32 of the clamping member 14 corresponds. The brake part 16 is thus preferably frictionally engaged on the clamping member 14. The brake part 16 is preferably plastic, preferably polyamide, most preferably Polyamide-6 (PA6).

The second gear 20 is along its axis of rotation with a projection 46th provided, wherein the outer shape of the projection 46 is round. Furthermore, points the gear 20 on a through hole 48, which preferably from in essential square shape is to match the square 28 of the threaded mandrel 12 to match. The gear 20 is preferably made of a zinc-aluminum alloy, preferably Zn Al 27, prepared.

The rotary handle 22 is provided with a substantially circular plate 50 and a substantially along the diameter of the plate 50 extending projection 52 provided. The projection 52 is preferably wider to one side and to the designed to be narrower side higher. It is also possible that the projection 52 of the rotary handle 22 has another suitable shape.

The first gear 18 is preferably molded to the rotary handle and so configured to engage with the second gear 20 in each other. It can However, also be provided, the gear, for example by means of a To fasten screw connection to the rotary handle. In the present preferred Embodiment, the gears 18 and 20 are made equal. However, it is also conceivable, the two gears 18 and 20 form such that a Under or translation is provided.

Furthermore, the gear 18 with a substantially cylindrical Locking member 54 is provided, wherein the locking member 54 at its distal end has radially outwardly extending projections 56. The locking member 54 may preferably be cast on the gear. Furthermore, it is conceivable that the Locking member 54 by means of a first gear 18 and the rotary handle 22nd connecting screw is attached to the first gear 18. However, it is also conceivable, the locking member 54 to another suitable Befestigungsart, for example by screwing, on the gear 18 to Fasten.

It is also conceivable, the rotary handle 22 without the use of the gears 18th and 20 to connect directly to the threaded mandrel 12.

The rotary handle 22 and the gear 18 are preferably made of a zinc-aluminum alloy, preferably Zn Al 27, prepared.

Fig. 7A shows a sectional view of a tabletop with a stationary unit according to a preferred embodiment of the invention therein and Fig. 7B a Top view of an immovable unit one covering plate Connecting device according to a preferred embodiment of Invention. Hereinafter, with reference to FIGS. 7A and 7B, the fixed one Unit 60 of the connecting device according to a preferred Embodiment of the present invention described.

The immovable unit 60 includes a recess 62 in a table top 90. The recess 62 is configured such that a rotation of the clamping part 14th around a rotation axis, that is, in the case where the Recess 62 is circular, the diameter of the circle is slightly larger than the diagonal of the two non-chamfered corners of the clamping part 14. Die However, recess 62 may also be rectangular, square or each be formed of any other shape, as long as a rotation of the clamping part 14 is allowed in it.

Furthermore, the immovable unit comprises a plate 64, which the Recess 62 covers. Preferably, the plate 64 is designed slightly larger as the recess 62 and preferably made of metal. The plate 64 can be attached to the table top 90 in any suitable manner, for example, by screwing or gluing with this. Furthermore, a Recess 65 may be provided in the table top 90 to the plate 64 therein take, so that the underside of the table top 90 flush with the Outer contour of the plate 64 completes. Further, it is conceivable, the recess 62nd and the plate 64 in one piece by appropriately milling the table top 90th train. In this embodiment, the plate 64 is made of the material the table top 90 and is integrally formed therewith.

The plate 64 is provided with an opening 66.

FIG. 7B shows another preferred embodiment of a plate 64 according to FIG present invention. In the plate 64 of Fig. 7B, two are preferably in substantially rectangular openings 66 are provided. Accordingly, the Table top 90 two recesses 62 at appropriate positions. Consequently can a table leg, on which two inventive Connecting means are arranged (as described later), at the Table top 90 are attached. However, it is also conceivable only one opening to provide in the plate 64.

The table leg is preferably provided with a connecting portion 94, which in a corresponding substantially tubular portion (not shown) is inserted to form the table leg. It is However, also conceivable, the tubular portion and the Form connecting portion 94 in one piece. Subsequently, the Connection section 94 described in detail.

Fig. 8A shows a plan view of the connecting portion 94, Fig. 8B a perspective view of the connecting portion 94 according to a preferred Embodiment of the invention according to a preferred embodiment of Invention from above, and Fig. 8C is a perspective view of Connecting portion 94 according to a preferred embodiment of Invention from below.

As shown in Figs. 8A-C, the connecting portion 94 preferably comprises a first portion 72, which in a correspondingly shaped tubular portion of a table leg is inserted, and a second Section 74, which is substantially perpendicular to the first portion 72nd extends. Preferably, the movable unit 10 is so in the Connecting portion 94 arranged (as described below) that the movable unit 10 moves during use, i. preferably rotated and locked, but not from the connecting portion 94th can be separated. Characterized in that the movable unit 10 during the Use can not be separated from the connection portion 94 can the handling of the table system according to the invention can be improved. In particular, there is the advantage that during construction and dismantling and in the Storage only table legs and table tops and not additional Small parts must be managed.

FIG. 8A shows an elevational view of a connecting portion 94 according to FIG preferred embodiment of the invention. As is apparent from Fig. 8A, the Connecting portion 94 according to a preferred embodiment of Invention designed such that two movable units 10 received can be. By providing two movable units 10 in one Connecting portion 94, for example, two table tops 90 by means of a Tischbein be connected. For this purpose, a movable unit of the Connecting portion 94, each with a stationary unit 60, which in the two table tops 90 are arranged, connected. Is a table leg only with connected to a table top 90, both movable units 10 in the arranged a table top 90. For this purpose, the table top 90 with two immovable units 60 provided, which at corresponding positions are arranged and it is preferably the plate 64 of Fig. 7B used. Consequently Various variations of table arrangements can be formed. For example, with multiple table tops 90 and table legs according to the present invention, a large table or a plurality of small tables formed become. Furthermore, a table system can also be formed. Should For example, a table are formed, which only a rectangular table top a table leg is placed at each corner of the table top and attached.

In the preferred embodiment of the present invention illustrated in FIGS. 8A-8C Invention is the connecting portion 94 for receiving two movable Units 10 provided, but only one inserted mobile unit 10th shown. In the ready state, two are preferred immovable units 10 inserted into the connecting portion 94.

As seen in Figs. 8A and 8B, at the top of the connection portion 94 preferably stops 68 arranged. In the present preferred Embodiment two stops 68 are provided which are located in However, it is also possible to have only one Stop 68 to provide. The attacks 68 have a in the supervision substantially rectangular shape, with each one end 70 linearly widens. The flared ends 70 of the stops 68 are in the present case preferred embodiment diagonally opposite, wherein the corresponding Elements of the movable unit 10, as described later, in between are arranged. Thus, the movable unit can be protected from damage become. The inner contour formed by the stops 68 substantially is substantially corresponds to the outer contour of the rectangular portion 34th of the clamping part 14. The stops 68 are preferably made of aluminum or a Aluminum alloy, preferably Al 226, produced.

The mounting of the movable unit 10 in the connecting portion 94 becomes described below with reference to the drawings.

First, the clamping member 14 is screwed so far on the threaded dome 22 until it rests against the contact surface 26 of the threaded mandrel 22. Below is the Brake member 16 placed on the cylinder 32 of the clamping member 14. Now that will be so mounted unit from the top in Fig. 8B in the connecting portion 94 introduced. Here, the brake member 16 is preferably at the connecting portion 94th arranged that the projections 43 with recesses 82, which preferably are provided in the connecting portion 94, engages. The brake member 16 is thus positively arranged in the connecting portion 94 and is against Twisting and pulling secured. From below, the second gear 20 attached to the threaded mandrel 12. The gear 20 is preferably by means of a screw secured to the threaded dome 12, and others Possibilities of securing the gear 20 to the mandrel 12 conceivable are. Thus, the threaded dome 12, the clamping member 14, the brake member 16 and the second gear 20 is rotatably fixed in the connecting portion 94.

Subsequently, the first gear 18, which is connected to the rotary handle 22 is brought into engagement with the second gear 20 and on the Connecting portion 94 secured by a snap connection, wherein the Projections 56 of the locking member 54 with corresponding recesses (not shown) connecting portion 94 into each other. It is also conceivable the gear by means of a screw connection to the connecting portion 94 to Fasten. Thus, a rotation of the rotary handle 22 via the first gear 18th and the second gear 20 are transmitted to the threaded dome 12. Of the Turning handle 22 is hereby arranged in the connecting section 94 as in FIG. 8C.

The plate 50 of the rotary handle 22 is preferably formed such that the entire Recess 80 at the bottom of the connecting portion 94, which is preferably circular, can be covered. Thus, the Mechanics of the movable unit 10 are at least partially covered.

Hereinafter, referring to FIGS. 9A and 9B, the connecting operation will be described a provided with a stationary unit 60 table top 90 with a with a movable unit 10 provided table leg described.

For assembly of the table top 90 with the table leg is the clamping part 14 initially frictionally engaged on the contact surface 26 of the threaded mandrel 12. Of Furthermore, the clamping part 14 is aligned in such a way that the bevelled corners 36 of the clamping member abut substantially at the ends 70 of the stops 68. Thus, the outer contour of the stops 68 together with the clamping part 14th essentially the shape of a rectangle. Now the stops 68, the clamping member 14 and the brake member 16 through the opening 66 in the recess 62 of the table top 90 preferably introduced as far as possible.

Subsequently, the rotary handle 22 is actuated, wherein this rotated by about 45 ° becomes. However, there may be other angles about which the rotary handle 22 is rotated will be provided as necessary. This rotation is about the Gears 18 and 20 transmitted to the threaded mandrel 12. Since the clamping part 14th frictionally engages the contact surface 26 of the threaded mandrel 12, the rotates Clamping part 14 with the threaded dome 12. The clamping member 14 rotates with as long the threaded mandrel 12 until the chamfered corners 36 on the stops 68th issue. Now, the clamping member 14 can not be rotated and is thus in its first position, as shown in Fig. 9A.

A further rotation of the rotary handle 22 causes a further rotation of the Threaded mandrel 12, wherein the clamping member 14 by means of the intermeshing Thread 24, 38 is moved away in the axial direction of the contact surface 26. The Axial movement of the clamping member 14 as long as the rotation of the rotary handle 22 performed until the clamping member 14 at the top of the plate 64 (Fig. 9B). is applied. In this case, the angle of rotation of the rotary handle 22 is preferably 135 °, wherein Other angles of rotation are possible. In this state is the Clamping part in its second position (Fig. 9B), in which the Connecting portion 94 and thus the table leg fixed to the table top 90 fixed are.

To open the connection of the rotary handle 22 in the opposite Direction turned. In this case, the clamping part 14 initially remains in the engages behind position, since the clamping member 14 and the brake member 16 each other contact frictionally. If the clamping member 14 by sufficient rotation of the rotary handle 22 is brought from the second to the first position and thus lies the clamping member 14 again frictionally against the abutment surface 26 of the threaded mandrel 12, the frictional force between the clamping part 14 and the outweighs Bearing surface 26, the frictional force between the clamping member 14 and the Brake member 16, so that the clamping member 14 rotates with the threaded mandrel 12. When Sequence leaves the clamping part 14, the engaging behind the first position. After that you can the movable unit 10 together with the connecting portion 94 of the immovable unit 60 are removed and thus the table top 90 of the Table leg to be separated.

LIST OF REFERENCE NUMBERS

10

mobile unit

12

mandrel

14

clamping part

16

brake part

18

first gear

20

second gear

22

rotary handle

24

trapezoidal thread

26

contact surface

28

square

30

Through Hole

32

cylinder

34

rectangular section

35

head Start

36

bevelled corner

37

non-bevelled corner

38

inner thread

40

cylinder

42

corners

43

projections

44

Through Hole

46

head Start

48

Through Hole

50

plate

52

head Start

54

locking member

56

projections

60

immovable unity

62

recess

64

plate

65

deepening

66

opening

68

attack

70

The End

72

first section

74

second part

80

recess

82

recesses

90

tabletop

94

connecting portion

Claims (19)

1. Connecting device for connecting a table leg (94) to a table top (90), the connecting device comprising:

   a movable unit (10), which can preferably be arranged on the table leg (94) and has a clamping part (14),

   which can be rotated about the longitudinal axis of the movable unit (10), for connecting the table leg (94) to the table top (90), and

   an immovable unit (60), which is preferably designed or can be arranged in or on the table top (90) and has an at least partly undercut engagement region with an opening (66), into which region the clamping part (14) of the movable unit (10) can be at least partly introduced through the opening (66), and

   the clamping part (14) being bringable into a first position by a rotary movement, so that the clamping part (14) engages at least partly behind the engagement region, characterized in that the clamping part (14) can be brought into a second position by axial movement, so that the movable unit (10) is fastened or clamped to the immovable unit (60).
2. Connecting device according to Claim 1, the clamping part (14) being bringable into the first position by rotation through 30° to 60°, preferably approximately 45°.
3. Connecting device according to one of the preceding claims, the clamping part (14) having with regard to its outer periphery in part essentially the shape of a rectangle which is slanted at at least one corner (36), and at least one stop (68) preferably being arranged on the table leg (94) in such a way that the at least one slanted corner (36) of the clamping part (14) bears against this stop after the rotary movement of the clamping part (14).
4. Connecting device according to Claim 3, two corners of the clamping part (14) being slanted and two essentially mutually opposite stops (68) being provided and the clamping part being provided between the stops (68).
5. Connecting device according to Claim 4, the inner periphery of the opening (66) of the immovable unit (60) corresponding approximately to the shape delimited by the outer contour of the stops (68).
6. Connecting device according to one of the preceding claims, the movable unit (10) also having a threaded pin (12) with an external thread (24), the external thread (24) engaging with a thread (38) designed on/in the clamping part (14) in order to make the axial movement of the clamping part (14) possible.
7. Connecting device according to Claim 6, the threads (24, 38) designed on the threaded pin (12) and on the clamping part (14) being trapezoidal threads.
8. Connecting device according to Claim 6 or 7, the threaded pin (12) having at one of its longitudinal ends a laterally projecting bearing surface (26), against which the clamping part (14) bears in a frictionally engaged manner until the rotary movement of the clamping part (14) is completed.
9. Connecting device according to one of Claims 6-8, the pitch of the thread (24, 38) being designed in such a way that the clamping part (14) can be brought into the second position by rotation of the threaded pin (12) through 120° to 150°, preferably approximately 135°.
10. Connecting device according to one of the preceding claims, the movable unit (10) also having a brake part (16), made preferably of plastic, in order when the connection is being undone to hold the clamping part (14) in an undercutting position by frictional engagement until the clamping part (14) has been brought from the second into the first position.
11. Connecting device according to one of the preceding claims, the movable unit (10) also having a rotary handle (22).
12. Connecting device according to Claim 11, the rotary handle being connected to a first toothed wheel (18) and the threaded pin (12) being connected, preferably at its end lying opposite the bearing surface (26), to a second toothed wheel (20), the first toothed wheel (18) and the second toothed wheel (29) meshing in such a way that rotation of the rotary handle (22) is transmitted to the threaded pin (12).
13. Connecting device according to Claim 10 or 11, the rotary handle (22) being designed so as to indicate a loosened state and a fastened state of the connecting device.
14. Table system, comprising at least one table top (90) and at least one table leg (94), the at least one table top (90) and the at least one table leg (94) being connectable by at least one connecting device according to one of the preceding claims.
15. Table system according to Claim 14, the immovable unit (60) comprising a recess (62) in the at least one table top (90), the recess (62) being designed so as to make rotation of the clamping part (14) therein possible.
16. Table system according to Claim 15, the immovable unit (60) also comprising a plate (64) covering the recess (62) of the at least one table top (90), the opening (66) being provided in the plate (64).
17. Table system according to one of Claims 14-16, the at least one table leg (94) having at the end to be connected to the table top (90) a connecting portion (94), in or on which the movable unit (10) of the connecting device and the at least one stop (68) can be arranged.
18. Table system according to Claim 17, it being possible for two movable units (10) to be arranged in the connecting portion (94), preferably at an angle of 45° to one another.
19. Table system according to Claim 18, the table system having at least two table tops (90) and the immovable units (60) being designed or arranged in the table tops (90) in such a way that a table leg (94) can be connected to two table tops (90).

Images