WO2002023086A1 - Cable height adjusting device for an electrical appliance, and electrical appliance - Google Patents

Abstract

The invention relates to a cable height adjusting device (1) for an electrical appliance, especially for a lamp, comprising a cable fixing element (2) to which a cable (3) can be fixed. According to the invention, a first means of adjustment (4) can be fixed in its position in relation to the cable fixing element (2), in the axial direction X of the cable (3), and a second means of adjustment (5) can be moved continuously in relation to the first means of adjustment (4), in the axial direction X of the cable (3), can be engaged with the first means of adjustment (4) and can be fixed in its position in relation to said first means of adjustment. The second means of adjustment (5) comprises at least one fixing means (6) which can be engaged with the electrical appliance. The invention also relates to an electrical appliance, especially a lamp, comprising a cable height adjusting device (1) having the aforementioned characteristics.

Description

 HIGH ADJUSTABLE CABLE JUSTICE FOR AN ELECTRICAL DEVICE AND

ELECTRICAL EQUIPMENT

The invention relates to a height-adjustable cable adjustment for an electrical device, in particular for a lamp, with a cable fixation to which a cable can be fixed and an electrical device.

To attach canopies to pendant lights, it is known to attach the canopies to an insulated electrical cable. This is done by a releasable connection, for example a screw that is screwed into a fastening device on the canopy, so that the cable is clamped. The problem with fastening lights that have to be connected to a ceiling on two sides is that the canopy or the light should be aligned as horizontally as possible. An oblique arrangement of the canopy or the luminaire is extremely annoying to a viewer, similar to a picture hung at an angle. Due to the previously known fastenings, only a rough setting of the two fixing positions on the two cables is possible. It is very difficult to be able to change the fastening of the cables to the fastening devices of the canopy in a metered manner. For this it is necessary with the previously known fixing means to loosen the screw to such an extent that the cable can move freely in the fastening device, then to move the cable therein and then to tighten the screw again and thus the cable again in the fastening device set. Most of the time, the cable is either moved too much or too little in a corresponding direction and the desired state that the canopy or the luminaire is aligned horizontally is not achieved.

The object of the present invention is therefore to design a height-adjustable cable adjustment and an electrical device in such a way that an exact adjustment of the height of the adjustment is possible in a simple manner.

This object is achieved by a height-adjustable cable adjustment with the features of claim 1 and by an electrical device according to claim 7. Advantageous developments of the invention are the subject of the dependent claims.

According to the invention it is provided that a cable can be fixed in a cable fixation, the cable fixation being able to be moved along the axial direction of the cable. This is done in that a first adjustment means in the axial direction of the cable can be fixed in its position for fixing the cable. However, an azimuthal movement of the first adjusting means around the cable is still possible. The first Nerstellmittel cooperates with a second Nerstellmittel, wherein it is continuously movable in the axial direction of the cable. The second setting means is provided with a fixing means which can be brought into engagement with a part of the electrical device. Due to the axial movement of the first locking device, the cable fixation is moved continuously with respect to the second locking device and thus the electrical device. This enables a very fine and precise adjustment of the height of the cable fixation without tools, and the electrical device can be aligned extremely precisely.

It is advantageous if the first adjustment means is designed as a rotary block with a first thread, in particular as a knurled screw, and the second adjustment means is designed as a rotary anchor with a second thread, the two threads interacting. This represents a particularly easy to manufacture and operate device for changing the axial position of the cable adjustment with respect to the electrical device.

It is also advantageous if the cable fixation and the two adjustment means each have an opening and are arranged concentrically to one another, enclosing a section of the cable and the second adjustment means being arranged in the radial direction of the cable between the cable fixation and the second adjustment means. A particularly good and safe movement of the individual parts relative to one another is thereby achieved, since they are arranged around the cable and the first adjusting means can rotate freely around the cable.

Furthermore, it is advantageous if the cable fixation and the first adjustment means are connected to one another by means of a plug-in mechanism in such a way that they are fixed to one another in the axial direction. As a result, it is not possible for the contact between the cable fixation and the first adjusting means to be interrupted in the axial direction, but at the same time a movement in the azimuthal direction around the cable is still possible. The first adjustment means and the cable fixation are thus completely decoupled from one another in the azimuthal direction, but act as a unit in the axial direction. It when the at least one fixing means of the second adjusting means is designed as a locking lug is particularly advantageous. This enables a very simple and secure connection between the second adjusting means and the electrical device.

To fix the cable, it is particularly advantageous if the cable fixation has an opening with a third thread for receiving a screw. Such a configuration is very easy to implement and leads to a secure fixation of the cable in the cable fixation.

Furthermore, the invention is solved by an electrical device which has a height-adjustable cable adjustment with the aforementioned and / or advantageous features according to the invention. The advantages mentioned above result in each case.

The at least one fixing means is preferably connected to the housing, in particular in the canopy. Furthermore, it is particularly preferred if the height-adjustable cable adjustment between a carrier plate and the canopy can be varied. This results in a particularly large scope for adapting the height-adjustable cable adjustment to the height desired by the user.

In the following, further advantages and details of the invention will be explained using an exemplary embodiment which is illustrated in the drawings. Here show:

Fig. 1 is a perspective view of a height-adjustable cable adjustment according to the invention with a cable and a bracket for one

Canopy,

2 is an exploded view of the cable adjustment from Figure 1 with a modified cable fixation,

3 is a cable fixation according to the invention, such as that shown in Figure 2,

Fig. 4 shows a first adjustment means according to the invention with inserted cable fixation and 5 shows a part of a second adjusting means according to the invention, as shown in FIG. 2.

In Figure 1, a height-adjustable cable adjustment 1 is shown, which is arranged on a cable 3 and a bracket for an electrical device. The cable adjustment 1 has a cable fixation 2, in which the cable 3 is fixed both in the axial direction X and in the radial direction Y and azimuthal direction Z, based on the cable 3. The cable fixation 2 has a plug mechanism 9 at its lower end. A head 16 is formed at its upper end, which has a larger diameter than the lower end.

A first adjustment means 4 is arranged between the head 16 and the plug mechanism 9. It encloses the cable fixation 2 between the head 16 and the plug mechanism 9. The first adjustment means 4 is thus fixed in the axial direction X and the radial direction Y with respect to the cable fixation 2. In contrast, rotation of the first adjusting means 4 about the azimuthal direction Z with respect to the cable fixation 2 is possible.

The first adjustment means 4 interacts with a second adjustment means 5, which is designed as a rotating anchor. For this purpose, the second adjustment means 5 is changed from the first

Adjustment means 4 penetrated. The second adjusting means 5 is fixed in position with the holding bracket 12 via a fixing means 6, here a locking lug. The first adjusting means 4 cooperates with a second thread 8 on the second adjusting means 5 by means of a first thread 7. The first adjusting means 4 designed as a rotary block can thus be rotated in the azimuthal direction Z to the second adjusting means 5 and thereby in its axial direction

Direction X with respect to the second adjusting means 5 are shifted. With an axial

Displacement of the first adjusting means 4 becomes the cable fixation 2 in the axial direction

Moved in the X direction. However, this remains unchanged in its azimuthal orientation with respect to the second adjusting means 5 and thus the retaining bracket 12. This means that by rotating the first adjusting means 4, its rotational movement only leads to an axial movement of the cable fixation 2 with respect to an electrical device attached to the holding bracket 12.

In Figure 2, the meshing of the individual parts of the invention is shown schematically. The cable fixation 2 encloses part of the cable 3 (not shown), the first

Adjustment means 4 part of the cable fixation 2 and the second adjustment means 5 with the first thread 7 provided part of the first adjusting means 4. The second adjusting means 5 is composed of a rotary anchor 22 and a fastening nut 20. The rotating armature 22 prevents the fastening nut 20 from rotating in the azimuthal direction Z when the first adjusting means 4 is rotated. For this purpose, two fixing means 6 are formed on the rotating armature 22 and are inserted into holes 26 on the holding bracket 12.

The cable fixation 2 shown in FIG. 3 has a first opening 13 through which the cable 3 (not shown) is guided. It can be fixed in its position for cable fixing 2 by an opening 10, which is provided with a third thread 11, by a screw 23 shown in FIG. 2 with a fourth thread 24. For this purpose, a rounded clamping device 25 presses the cable against the wall of the first opening 13. The opening 10 is formed in the head 16. This is followed at the bottom by a tube wall 17 which is aligned with the first opening 13. The tube wall 17 terminates at its free end with the plug mechanism 9. This has lugs 18 at its end facing the head 16. At the transition between head 16 and tube wall 17, a stop 19 is formed due to the different diameters of the two parts. In the installed state, the first adjusting means 4 is located between the stop 19 and the lugs 18. So that this can be pushed onto the tube wall 17, slots 27 are formed in the axial direction X in the region of the plug-in mechanism 9. Due to the elasticity of the material, the first adjusting means 4 can be pushed over the plug mechanism 9.

The first adjusting means 4 shown in FIG. 4 has a second opening 14, into which, as in the assembled state, the cable fixation 2 is inserted. Both the tube wall 17 of the cable fixation 2 and the second opening 14 are designed to be as smooth as possible, so that as little friction as possible occurs when the first adjusting means 4 is rotated in the azimuthal direction Z between these two parts. This ensures simple and energy-saving adjustment of the cable adjustment 1. The first adjusting means 4 is designed as a knurled screw, the first thread 7 of which is formed as an external thread.

The part of the second adjusting means 5 shown in FIG. 5 is designed as an essentially plate-shaped rotary anchor 22. The fixing means 6 are arranged on one of its surfaces. The second adjusting means 5 is penetrated centrally by a third opening 15, into which the fastening nut 20 (FIG. 2) is connected in a connection 21, which is straight is so large that it can receive the fastening nut 20 in a form-fitting manner. The fastening nut 20 carries the second thread 8. This is designed as an internal thread (FIG. 2). In the assembled state, the second thread 8 and the first thread 7 of the first adjusting means 4 interact by intermeshing. The rotary anchor 22 has the effect that the fastening nut 20 is also rotated when the first adjusting means 4 is rotated. This allows the height of the cable adjustment to be adjusted with millimeter precision when the knurled screw is turned, and an exact horizontal alignment of the electrical device is child's play.

In addition to the two-part design of the second adjusting means 5 with a rotating anchor 22 and a fastening nut 20 which can be inserted therein, it is also possible to form the second adjusting means 5 in one piece. Then the second thread 8 is formed directly in the third opening 15 of the rotating armature 22.

LIST OF REFERENCE NUMBERS

1 cable adjustment

2 cable fixation

3 cables

4 First adjustment device

5 Second adjustment means

6 fixing agents

7 First thread

8 Second thread

9 plug-in mechanism 0 opening in the cable fixation 1 third thread 2 retaining bracket 3 first opening 4 second opening 5 third opening 6 head 7 tube wall 8 nose 9 stopper 0 fastening nut 1 recess 2 rotating anchor 3 screw 4 fourth thread 5 clamping device 6 hole in the retaining bracket 7 slot

X axial direction

Y Radial direction z Azimuthal direction

Claims

1. Height-adjustable cable adjustment (1) for an electrical device, in particular for a lamp, with a cable fixation (2) on which a cable (3) can be fixed, characterized in that the s with a first adjusting means (4) in the axial direction (X) of the cable (3) in its position for fixing the cable (2) can be fixed, and with a second locking means (5) which is in the axial direction (X) of the cable (3) with respect to the first Nerstellmittel (4) can be moved continuously, can be brought into engagement with the first Nerstellmittel (4) and its position can be fixed in relation to it, the second adjusting means (5) having at least one fixing means (6) which can be brought into engagement with the electrical device , 2. Height-adjustable cable adjustment (1) according to the preceding claim, characterized in that the first adjustment means (4) is designed as a rotary block with a first thread (7), in particular as a knurled screw, and the second adjustment means (5) as a rotary anchor is formed with a second thread (8), the two Interact with threads (7, 8). 3. Height-adjustable cable adjustment (1) according to one of the preceding claims, characterized in that the cable fixation (2) and the two adjusting means (4, 5) each have one Have opening (13, 14, 15) and are arranged concentrically to each other, enclosing a portion of the cable (3) and the first adjusting means (4) in the radial direction (Y) of the cable (3) between the cable fixation (2) and the second adjustment means (5) is arranged. 4. Height-adjustable cable adjustment (1) according to one of the preceding claims, characterized in that the cable fixation (2) and the first adjustment means (4) are connected to one another by means of a plug mechanism (9) in such a way that they are in the axial direction (X) to one another are set. 5. Height-adjustable cable adjustment (1) according to one of the preceding claims, characterized in that s the at least one fixing means (6) of the second adjusting means (5) is a locking lug. 6. Height-adjustable cable adjustment (1) according to one of the preceding claims, characterized in that the cable fixation (2) has an opening (10) with a third thread (11) for receiving a screw which is used to fix the cable (3) in the cable fixation (2) is used. 7. Electrical device, in particular lamp, with a height-adjustable kakeljustierung (1) according to any one of the preceding claims. 8. Electrical device according to the preceding claim, characterized in that the at least one fixing means (6) is connected to the housing, in particular a canopy. 9. Electrical device according to one of the two preceding claims, characterized in that the height-adjustable cable adjustment (1) is variable between a carrier plate and the canopy.