Fitting for a liquid-tight cable leadthrough
View Patent ↗The invention relates to a fitting for a liquid-tight cable leadthrough in an opening ( 1 ) in a solid surface ( 2 ), which solid surface can be gripped from the back, wherein said fitting comprises an upper boundary plate ( 4 ) that covers the opening ( 1 ), an elastic moulded element ( 3 ) that flatly contacts and is connected to the upper boundary plate ( 4 ) and can be at least partially inserted into the opening ( 1 ), a lower boundary plate ( 8 ) that can be lead through the opening ( 1 ), wherein the lower boundary plate flatly contacts and is connected to the elastic moulded element ( 3 ) on the opposite side of the elastic moulded element ( 3 ) referred to the upper boundary plate ( 4 ), a locking plate ( 9 ) that can be moved relative to the lower boundary plate ( 8 ) and is providable with at least two pivoted locking elements ( 17 ), wherein said locking elements are supported between pairs of mounting limbs ( 20 ) by element of a bolt ( 22 ) and can be pivoted between a position in which the locking plate ( 9 ) can be lead through the opening ( 1 ) and a stopping position which they enables a gripping from the back of the solid surface ( 2 ), at least one clamping element for adjusting the spacing between the upper boundary plate ( 4 ) and the locking plate ( 9 ) against forces generated during a deformation of the elastic moulded element, and opening ( 10 ) that extends through the locking plate ( 9 ), the boundary plates ( 4, 8 ) and the elastic moulded element ( 3 ) and serves for accommodating a cable ( 7 ) to be lead through the solid surface ( 2 ).
1. A fitting for a liquid-tight cable leadthrough in an opening in a solid surface, which is gripped from the back, the fitting comprising:
an upper boundary plate,
an elastic moulded element,
a lower boundary plate,
a locking plate,
at least one clamping element, and
at least one opening for accommodating a cable to be lead through the solid surface,
wherein the upper boundary plate covers the opening,
wherein the elastic moulded element flatly contacts and is connected to the upper boundary plate and is at least partially inserted into the opening,
wherein the lower boundary plate is lead through the opening, wherein the lower boundary plate flatly contacts and is connected to the elastic moulded element on the opposite side of the elastic moulded element referred to the upper boundary plate,
wherein the locking plate is moved relative to the lower boundary plate and is provided with at least two pivotable locking elements, wherein said locking elements are mounted between pairs of mounting limbs by element of a bolt and is pivoted between a position in which the locking plate is lead through the opening and a stopping position which enables a gripping from the back of the solid surface,
wherein the at least one clamping element is operable for adjusting the spacing between the upper boundary plate and the locking plate against forces generated during a deformation of the elastic moulded element,
wherein the at least one opening for accommodating a cable to be lead through the solid surface extends through the locking plate, the boundary plates and the elastic moulded element and serves.
2. The fitting of claim 1 , wherein the locking plate comprises at least three pivotable locking elements that are arranged in a star configuration.
3. The fitting of claim 1 , wherein the locking plate contains five pivotable locking elements that are arranged in a star configuration.
4. The fitting of claim 1 , wherein the elastic moulded element is a cylindrical rubber block that can be completely inserted into the opening in the solid surface which solid surface can be gripped from the back.
5. The fitting of claim 4 , wherein the diameter of the cylindrical section of the rubber block is smaller in the relaxed state than the diameter of the opening in the solid surface which solid surface can be gripped from the back.
6. The fitting of claim 1 , wherein the elastic moulded element is a rubber block with a cylindrical section that can be inserted into the opening in the solid surface, which solid surface can be gripped from the back, and with a widened section that is supported on the edge of the opening.
7. The fitting of claim 1 , wherein several openings extending through the locking plate, the boundary plates and the elastic moulded element are provided for respectively accommodating a cable to be lead through the solid surface.
8. The fitting of claim 1 , wherein five openings extending through the locking plate, the boundary plates and the elastic moulded element are provided for respectively accommodating a cable to be lead through the solid surface.
9. The fitting of claim 1 , wherein the clamping element for adjusting the distance between the upper boundary plate and the locking plate comprises a screw that extends through a central opening in the locking plate, the boundary plates and the elastic moulded element.
10. The fitting of claim 9 , wherein the screw is engaged with a female thread in the locking plate.
11. The fitting of claim 9 , wherein the screw is secured with a self-locking nut.
12. The fitting of claim 1 , wherein the locking plate is connected to a guide pin that can be moved in a guide bore in the lower boundary plate.
13. The fitting of claim 1 , wherein the pivotable locking elements are supported in such a way that the stopping position of the pivotable locking elements, which stopping position enables that the solid surface can be gripped from the back, can only be vacated against an elastic restoring force.
14. The fitting of claim 1 , wherein the openings for accommodating the cables to be lead trough have such dimensions in the region of the upper boundary plate that they are able to accommodate an casting compound volume required for sealing the lead through cables.