Abstract:
The invention relates to a device for removably fixing a conductor ( 10 ) to a current transformer housing ( 12 ), comprising a fixing element ( 18 ) which runs through a retaining element ( 16 ) lying on the current transformer housing ( 12 ) and which sits at least partly against the surface of the conductor ( 10 ) when the conductor ( 10 ) is fixed on the current transformer housing ( 12 ). The invention is characterized in that the fixing element ( 18 ) runs around the circumferential surface of the conductor ( 10 ) in a looped manner when fixed.

Description:
FIELD 
       [0001]    The innovation applies to a device for the detachable attachment of a conductor on a transformer housing with a fastening element, whereby the fastening element must be routed, so that the fastening element is placed onto the surface of the conductor at least partially when the conductor is attached to the transformer. 
       BACKGROUND 
       [0002]    A conductor is usually routed through an opening that is provided on the transformer housing. The conductor is attached on the transformer housing with two screws or threaded pins, which are routed in two holding elements arranged on the transformer housing. For the purpose of fastening, the screws and/or threaded pins are turned inside of the holding element with a purely rotating movement in the direction of the conductor until their cross section is placed onto the surface of the conductor. Continued turning of the screws and/or threaded pins will result in securing the conductor in the transformer housing. 
         [0003]    The disadvantage is hereby that the threaded pins and/or screws must travel a relatively long path for fastening on the conductor, whereby this occurs exclusively with a purely rotating movement, which requires a lot of force and time, especially with a larger number of transformer housings to be secured on a conductor. 
         [0004]    Therefore, the innovation is based on the task to provide a device to fasten a conductor on a transformer housing, which is marked by a more simplified and faster installation. 
       SUMMARY 
       [0005]    The solution for this task occurs according to the innovation with the characteristics of claim  1 . Advantageous designs of the innovation are indicated in the subclaims. 
         [0006]    The innovation-based device to fasten a conductor on a transformer housing has a fastening element, whereby the fastening element must be waged so that the fastening element is at least partially placed onto the surface of the conductor when the conductor is fastened on the transformer housing. The fastening element is characterized in that the fastening element is looped around the surrounding area of the conductor when it is secured. 
         [0007]    The retaining element is preferably constructed in form of a flange, which is arranged on the transformer on the outer area of the transformer housing Two such retaining elements are thereby preferably arranged on two side areas of the transformer housing across from each other on the transformer housing so that not only the first retaining element but also the second retaining element can be used to feed through a fastening element according to the innovation. According to the innovation, the conductor is fastened in that the fastening element that is fed into the retaining element in the secured state is routed in a loop around the surrounding area of the conductor. The fastening element is thereby preferably constructed in form of an elongated rod, which is constructed with elasticity and can thereby be bent flexibly. The fastening element is preferably made of plastic. In the secured state, the conductor is placed onto the outer area of the fastening element, which is shaped as a loop and points toward the conductor and will be kept by it in its position. The conductor is thereby fed through the loop of the fastening element and held in this loop and fastened on the transformer housing. The fastening element is thereby preferably routed around the surrounding area of the conductor that is arranged perpendicular to the longitudinal axis of the conductor. Because the fastening element is looped around the conductor to secure the transformer housing on the conductor, the installation to secure the conductor is especially easy and quick. In addition, the fastening element can be flexibly adjusted to the dimension of the surrounding area of the conductor because of the loop shaped design of the fastening element in the fastened state, so that the conductor can be secured permanently and slip-proof with the fastening element regardless of the dimensions of the surrounding area of the conductor. 
         [0008]    According to an advantageous design of the innovation, the fastening element has a first end section and a second end section across from the first end section, whereby the first end section can be fed through a first opening provided on the retaining element. The fastening element can thereby be secured in a fixed position on then retaining element. To secure the conductor, the fastening element is preferably routed from the end section of the fastening element that is kept in the opening with a second end section in a loop around the surrounding area of the conductor. After another preferred design of the innovation, the first section has an aperture through which the second end section can be routed. When the second end section is fed through the aperture on the first end section, the conductor will be fastened by routing the fastening in form of a loop. Because the second end section can be fed through an aperture that is provided on the first end section, whereby the second end section can thereby preferably be fed as far as needed through the aperture, the fastening element can be adjusted to the size of the surrounding area of the conductor flexibly so that the conductor can be permanently secured with the fastening element regardless of the size of the conductor. This makes an especially flexible fastening and/or mounting possible. For example, the fastening element may be constructed in form of a cable tie. 
         [0009]    As an alternative, the second end section can be fed through a second opening provided on the retaining element according to a further preferred design of the innovation. The first opening and second opening must thereby preferably be shaped parallel to each other on the retaining element. The fastening element is preferably fed with its first end section through the first opening first, and then the fastening element is routed around the surrounding area of the conductor until the second end section can be fed through the second opening. This makes it possible to not only secure the first end section but also the second end section on the retaining element, which makes an especially easy handling of the device according to the innovation to fasten a conductor possible for the user. 
         [0010]    It must further be preferably provided that latch mechanisms are designed at the first end section and/or second end section. The latch mechanisms, which may be constructed as snap tabs, can be used to secure the end sections of the fastening element within the openings, whereby the routing of the end sections through the openings can be adjusted optionally and very flexibly to the size of the surrounding area of the conductor depending on the number of latch mechanisms that are provided. The first opening and/or second opening thereby preferably have one hook element each, in which the latch mechanisms of the first end section and/or second end section can latch so that the end sections can be fastened in the desired position. If both end sections have latch mechanisms, both end sections can be evenly fed through the two openings provided in the retaining element so that an even load distribution is applied to the fastening element in the secured state. 
         [0011]    In order to provide improved handling of the device according to the innovation, an operating element to release the first end section from the first opening and/or releasing the second end section from the second opening is provided in a further preferred design of the innovation on the retaining element. For example, the operating element can be used to operate a provided hook element in the first opening and/or second opening to secure the first end section and/or second end section within the first opening and/or second opening. For example, The operating element can be operated to release the hook element provided in the openings from the latch mechanisms provided at the end sections and/or the hook element can be unlatched from the latch mechanisms so that the first end section and/or second end section can be moved and/or slid freely within the first opening and/or second opening. The operating element is preferably provided in form of a push button that is arranged on the retaining element. The provision of such operating element can be implemented with an especially easy and quick installation of the fastening element. 
         [0012]    The innovation will be explained in further detail below with reference to the attached drawings based on preferred designs. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0013]    The following is illustrated: 
           [0014]      FIG. 1  shows a schematic illustration of a device according to the innovation according to an initial design; 
           [0015]      FIG. 2  shows a schematic illustration of a device according to the innovation according to a second design; and 
           [0016]      FIG. 3  shows a schematic top view of the device according to the innovation shown in  FIG. 2  whereby the retaining element is shown in across-section. 
       
    
    
     DETAILED DESCRIPTION 
       [0017]      FIG. 1  shows a device according to the innovation for the detachable fastening of a conductor  10  on a transformer housing  12 , whereby the conductor  10  is fed through an opening  14  provided on a transformer housing  12 . The transformer housing  12  has two retaining elements  16 . One fastening  18  is positioned on each one with panning capability.  FIG. 1  shows the device according to the innovation in a secured state where the fastening element  18  is at least partially placed onto the surface of the conductor  10 . The fastening element  18  has a retaining clip  20  and a lever  22  on the retaining clip  20 . The retaining clip  20  is placed on the surface of the conductor  10  in the secured state. The retaining clip  20  is designed in form of a bridge, whereby an open end  24  of the retaining clip  20  has a curved area, whereby the curve of the curved area points away from the conductor  10 . The retaining clip  20  is hereby placed onto the surface of the conductor  10  in the area of its curved area. The lever  22  also has a curved area at its open end  32 , whereby the lever  22  is easier to handle for a user. 
         [0018]      FIG. 1  shows a device according to the innovation according to a first design, whereby a conductor  10  is hereby fed through an opening  14  provided on the transformer housing  12  and with two fastening elements  18  that are provided on the transformer housing  12 , which are fastened and can be fed through retaining elements  6  arranged on one of two side areas of the transformer housing  12  across from each other. In the design shown in  FIG. 1  the retaining elements  16  have a first opening  20  each, through which the fastening elements  18  are routed. A fastening element  18  thereby has a first end section  22 , which is fed through the opening  20  of the retaining element  16 . To fasten the conductor  10  on the transformer housing  12 , a second end section  24  of the fastening element  18 , which is positioned across from the first end section  22 , is fed through an aperture  26  that is provided on fastening element  18 .  FIG. 1  shows the device according to the innovation in a state where the conductor  10  has not yet been secured with the fastening element  18  because the second end section  24  of the fastening element  18  has not yet been fed through the aperture  26  of the first end section  22 . The fastening element  18  is hereby preferably designed in form of a cable tie. In the secured state, which is not shown here, the fastening element  18  is routed around the surrounding area of the conductor  10  in a loop. 
         [0019]      FIGS. 2 and 3  show a device according to the innovation according to a second design, where a conductor  10  is fed through an opening  14  that is provided on the transformer housing  12 . 
         [0020]    A fastening element  18  is provided on both sides of the transformer housing  12  to attach the conductor  10 , which is fed in a loop around the surrounding area of the conductor  10  in the secured state, as this is shown in  FIG. 2 . The fastening element  18  is designed in form of an elongated rod made of flexible material. The fastening element  18  has an initial end section  22  and a second end section  24 , whereby the first end section  22  is fed through a first opening  20  on the retaining element  16  and the second end section  24  is fed through a second opening  28  on the retaining element  16 . Multiple latch mechanisms are designed on the first end section  22  and the second end section  24  in form of snap tabs, which can be fed through the openings  20 ,  28  and that can be latched inside of the openings  20 ,  28  in hook elements, which are not shown here, which can lock into the snap tabs  30 . An operating element  32 , in form of a push button, for example, is provided on retaining element  16  to release the fastening element  18 . Operating the operating element  30  will detach the hook elements from the latch mechanisms so that the latch mechanisms  30  will be released and the first end section  22  and second end section  24  of the fastening element  18  can be moved freely in the first opening  20  and the second opening  28 . 
         [0021]      FIG. 3  shows a more detailed illustration of the device according to the innovation according to the second design in form of a top view onto the transformer housing  12  and conductor  10 , whereby the retaining element  16  is shown in a cross-section. It is hereby recognizable that the operating element  32  can grip into spring arms  34  provided within the retaining element  16 . 
         [0022]      FIG. 3  shows the fastening element  18  in a position where the fastening element  18  is permanently fixed within the openings  20 ,  28  and kept in its position with the operating element  32 . Operating the operating element  32  in the direction of the transformer housing  12 , the fastening element  32  will latch in the spring arms  34  and will be kept by them in this position; whereby the fastening element  18  is thereby released by the operating element  32  and will thereby be freely movable in the openings  20 ,  28 . As soon as the user releases the operating element  32  again, it will move back into the position shown in  FIG. 3  due to the spring arms  34 , so that the end sections  22 ,  24  of fastening element  18  are secured again and can no longer be moved in the openings  20 ,  28 . This makes a flexible adjustment of the fastening element  18  to the size of the surrounding area of the conductor  10  to be secured possible so that the conductor  10  can be kept in place with a tensioned state of the fastening  18  that is routed around the surrounding surface. 
       REFERENCE CODE LIST 
       [0000]    
       
         Conductor  10   
         Transformer housing  12   
         Opening  14   
         Retaining element  16   
         Fastening element  18   
         First opening  20   
         First end section  22   
         Second end section  24   
         Aperture  26   
         Second opening  28   
         Latch mechanism  30   
         Operating element  32   
         Spring arm  34