Abstract:
A cable harness plug is described, including a housing part for accommodating the contact carriers and a cover, a securing device being provided for securing a cable harness leading to the contact elements on the cable harness plug, and the cable harness being arranged inside a cable protection device provided on the cable harness plug. The securing device includes a retaining strap which forms one piece with the cable protection device. This makes it possible to arrange a cable harness directly on the cable harness plug in a vibration-proof mount and to protect it from mechanical damage at the transition from the cable protection device to the cable harness plug.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a cable harness plug for establishing a disconnectable electric plug-and-socket connection with another plug part, including a housing part in which electric contact elements are arranged, and a cover to protect the contact elements, as well as a securing device for securing a cable harness leading to the contact elements on the cable harness plug, the cable harness being arranged inside a cable protection device provided on the cable harness plug. 
     BACKGROUND INFORMATION 
     Disconnectable plug-and-socket connections are known in a variety of versions. As a rule, they include a first plug part, e.g., a cable harness plug, and another plug part, e.g., a male connector. The cable harness plug itself includes a contact carrier in the form of a housing part in which the electric contact elements are arranged and a cover to protect the contact elements from dirt, water or the like or unintentional contact. The cover can be latched on the contact carrier. To prevent unintentional opening of the cover and thus detachment from the contact carrier, the cover can be secured by using a securing device, e.g., by a retaining strap. 
     Furthermore, there are known cable protection devices which are used to guide the cable harness to the contact elements and to protect the cable harness from mechanical stresses in the transitional area from support sleeves, sheathing or the like to the plug part. They are usually composed of two interlocking half-shells with the cable harness inside. The half-shells are usually connected in one piece to the plug part. 
     One disadvantage of the type mentioned above of cable harness plugs is that it does not permit a vibration-proof arrangement of the cable harness directly on the cable harness plug to protect it from mechanical damage at the transition from the cable protection device to the cable harness plug. 
     SUMMARY OF THE INVENTION 
     Therefore, an object of the present invention is to design a cable harness plug of the type mentioned above such that the disadvantages of the related art are avoided. 
     This object is achieved by the fact that the securing device is composed of a retaining strap which forms one piece with the cable protection device. 
     One important advantage of the present invention is that a cable harness plug has been created that provides all the elements for assembly of a cable harness on the contact carrier in a simple manner. Therefore, it is no longer necessary to keep an inventory of securing devices. 
     The cable protection device is preferably made of a grooved tube formed from two half-shells, a first half-shell being arranged on the cover and the other half-shell being arranged on the housing part of the cable harness plug. Therefore, there is a direct connection between the housing part of the cable harness plug and the cable protection device, so that this transition is protected from mechanical damage. 
     Furthermore, the securing device is designed in the form of a retaining strap which is arranged on the inside of the first half-shell and can be guided and secured through a side opening in the cable protection device around the cable harness and through the opening. The latching device for the retaining strap is preferably arranged on the outside of the cover. 
     As an alternative, the retaining strap can be arranged on the other half-shell with the same function. 
     An alternative securing device is designed such that the retaining strap is arranged on the outside of the first half-shell, can be guided around the other half-shell and can also be secured on the first half-shell. 
     As an alternative, the retaining strap may also be arranged on the other half-shell with the same function. 
     In the two embodiments mentioned last, the retaining strap in its first function is used to secure the two half-shells relative to one another and to prevent any inadvertent opening of the two half-shells due to vibration. 
     The other function of the retaining strap is to secure the cable harness in the cable protection device. Therefore, a holding device for the cable harness is provided inside the cable protection device and is designed so that the cable harness is secured by joining the two half-shells in the area of the holding device. The two half-shells preferably have two opposing curvatures arranged with a distance between them. When the half-shells are closed, this causes the cable harness to be secured in a fixed position. To increase this friction-locking effect, the securing device in the form of the retaining strap provided on one of the two half-shells is also preferably accommodated in this area. 
     A preferred variant of the embodiment mentioned last has in the first half-shell a recess into which the retaining strap provided on the other half-shell engages, so that a shorter retaining strap can be used. 
     To guarantee that the cable harness will be adequately secured, experiments have shown that the width of the holding device corresponds to the inside distance between the two legs of the first half-shell. 
     Furthermore, depending on the gauge of the cable harness, additional latching arrangements may also be provided in the embodiments mentioned above for securing the first half-shell on the other half-shell. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 shows a schematic diagram of a first embodiment of the cable harness plug according to the present invention immediately before joining the cover and the contact carrier. 
     FIG. 2 shows a section through the cable harness plug according to FIG. 1 along line II—II. 
     FIG. 3 shows a schematic diagram giving a sectional view of the cable protection device together with the securing device connected to the cable protection device in one piece. 
     FIG. 4 shows a schematic diagram of a second embodiment of the cable harness plug according to the present invention immediately before joining the cover and the contact carrier. 
     FIG. 5 shows a top view of the cable harness plug according to FIG.  4 . 
     FIG. 6 shows a schematic diagram of the cable protection device together with the securing device connected to the cable protection device in one piece. 
     FIG. 7 shows a schematic diagram of a third embodiment of the cable harness plug according to the present invention immediately before joining the cover and the contact carrier. 
     FIG. 8 shows a top view of the cable harness plug according to FIG.  7 . 
     FIG. 9 shows a schematic diagram of a fourth embodiment of the cable harness plug according to the present invention immediately before joining the cover and the contact carrier. 
     FIG. 10 shows a top view of the cable harness plug according to FIG.  9 . 
    
    
     DETAILED DESCRIPTION 
     First exemplary embodiment (FIGS. 1-3) 
     FIGS. 1 through 3 show the first embodiment of cable harness plug  1  according to the present invention. It includes a housing part  2 , corresponding to the contact carrier of a plug part, and a cover  3  to protect the contact carriers. 
     Furthermore, a securing device  4  is provided for securing a cable harness  5 , leading to the contact carriers, on the cable harness plug  1 , cable harness  5  being arranged inside a cable protection device  6  provided on cable harness plug  1 . 
     Cable protection device  6  is composed of two half-shells  6   a ,  6   b , first half-shell  6   a  being connected in one piece to cover  3  and other half-shell  6   b  to housing part  2 . 
     Securing device  4  includes a retaining strap  7  which is arranged on inside  8  of first half-shell  6   a , as shown in FIG.  3 . Before assembly, retaining strap  7  preferably extends out of an opening  9  and has latching elements  10  on its free end. 
     For assembly and thus for securing cable harness  5  on cable harness plug  1 , retaining strap  7  is looped around cable harness  5  inside the cable protection device, latching with its free end in a latching device  11 . Cable protection device  6  may already be closed here. 
     Furthermore, another latching arrangement  12  provided on first half-shell  6   a  works together with corresponding latching arrangement  13  on other half-shell  6   b , as shown in FIG.  1 . 
     Thus, it can be seen that cable harness  5  is also secured when cable harness plug  1  is assembled. 
     Second exemplary embodiment (FIGS. 4-6) 
     FIGS. 4 through 6 show the second embodiment of cable harness plug  20  according to the present invention. It includes a housing part  22 , corresponding to the contact carrier of a plug part, and a cover  23  to protect the contact carriers. 
     Furthermore, a securing device  24  is provided for securing a cable harness  25  leading to the contact carriers on cable harness plug  20 , cable harness  25  being arranged inside a cable protection device  26  provided on cable harness plug  20 . 
     Cable protection device  26  is composed of two half-shells  26   a ,  26   b , first half-shell  26   a  being connected in one piece to cover  23  and other half-shell  26   b  to housing part  22 . 
     Securing device  24  includes a retaining strap  27  which is provided directly on other half-shell  26   b , as shown in FIG.  6 . Before assembly, retaining strap  27  preferably extends perpendicularly away from the guide for cable harness  25  and has latching elements  30  on its free end. 
     For assembly and thus for securing cable harness  25  on cable harness plug  20 , retaining strap  27  is looped around cable harness  25  inside cable protection device  26 , latching with its free end in a latching device  31 . 
     Furthermore, another latching arrangement  32  provided on first half-shell  26   a  works together with a corresponding latching arrangement  33  on other half-shell  26   b , as shown in FIG.  4 . 
     Thus, it can be seen that cable harness  25  is also secured when cable harness plug  1  is assembled. 
     In addition, a holding device  34  which is used for additional securing of cable harness  25  is provided in the retaining area of retaining strap  27 . For this purpose, two elevations are provided in first half-shell  26   a  in the embodiment shown here, which work together with elevations arranged in parallel in other half-shell  26   b  such that cable harness  25  arranged between them is at least presecured when cover  23  is closed. 
     Third exemplary embodiment (FIGS. 7-8) 
     FIGS. 7 and 8 show the third embodiment of cable harness plug  40  according to the present invention. It includes a housing part  42 , corresponding to the contact carrier of a plug part, and a cover  43  to protect the contact carriers. 
     Furthermore, a securing device  44  is provided for securing a cable harness  45  leading to the contact carriers on cable harness plug  40 , cable harness  45  being arranged inside a cable protection device  46  provided on cable harness plug  40 . 
     Cable protection device  46  is composed of two half-shells  46   a ,  46   b , first half-shell  46   a  being connected in one piece to cover  43  and other half-shell  46   b  to housing part  42 . 
     Securing device  44  includes a retaining strap  47  which is provided directly on other half-shell  46   b , as shown in FIG. 7, for example. 
     In addition, a holding device  54  which is used for additional securing of cable harness  45  is provided in the retaining area of retaining strap  47 . For this purpose, two elevations are provided in first half-shell  46   a  in the embodiment shown here, which work together with elevations arranged in parallel in other half-shell  46   b  such that cable harness  45  arranged between them is at least presecured when cover  43  is closed. 
     Furthermore, a recess  55  provided on first cover  43  in the area of the arrangement of retaining strap  47  is designed with dimensions such that it can accommodate retaining strap  47 . 
     For assembly and thus for securing cable harness  45  on cable harness plug  40 , cover  43  is first placed on housing part  42 . A retaining strap  47  which is provided as the securing device is looped around two half-shells  46   a  and  46   b  and secures cable harness  45  on cable protection device  46  due to holding device  54 . 
     Furthermore, another latching arrangement  52  provided on first half-shell  46   a  work together with corresponding a latching arrangement  53  on other half-shell  46   b , as shown in FIG.  7 . 
     Thus, it can be seen that cable harness  45  is also secured when cable harness plug  40  is assembled. 
     Fourth exemplary embodiment (FIGS. 9-10) 
     FIGS. 9 and 10 show the fourth embodiment of cable harness plug  60  according to the present invention. This is the simplest form of the present invention. It includes a housing part  62 , corresponding to the contact carrier of a plug part, and a cover  63  to protect the contact carriers. 
     Furthermore, a securing device  64  is provided for securing a cable harness  65  leading to the contact carriers on cable harness plug  60 , cable harness  65  being arranged inside a cable protection device  66  provided on cable harness plug  60 . 
     Cable protection device  46  is composed of two half-shells  66   a ,  66   b , first half-shell  66   a  being connected in one piece to cover  63  and other half-shell  66   b  to housing part  62 . 
     Securing device  64  includes a retaining strap  67  which is provided directly on other half-shell  66   b , as shown in FIG. 9, for example. 
     In addition, two elevations  74  are provided in first half-shell  46   a  in the embodiment shown here, which work together with elevations  74  arranged in parallel in other half-shell  46   b  such that cable harness  65  arranged between them is at least presecured when cover  63  is closed. 
     For assembly and thus for securing cable harness  65  on cable harness plug  60 , cover  63  is first placed on housing part  62 . A retaining strap  67  which is provided as the securing device is looped around two half-shells  66   a  and  66   b  and secures cable harness  65  on cable protection device  66  due to holding device  74 . 
     Furthermore, another latching arrangement  72  provided on first half-shell  66   a  works together with a corresponding latching arrangement  73  on other half-shell  66   b , as shown in FIG.  8 . 
     Thus, it can be seen that cable harness  65  is also secured when cable harness plug  60  is assembled.