Spray-protected connection housing for electrical consumers

Details Spray-protected connection housing for electrical consumers Spray-protected connection housing for electrical consumers

1991-07-15

1993-09-28

Picard, Leo P.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

285158, 285396, H02G 308

Patent

active

052488497

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field of the Invention
The invention relates to a jet-proof adapter box or connection housing for electrical consumers with a base structure that has an annular sealing ridge on the cover side and with a cover that has a sealing effect with an annular sealing strip in conjunction with the sealing ridge, with the walls of the base structure having windows, each of which holds a sealing flange of a connector.
2. Prior art
Such an adapter box is described in DE-GM 80 08 956. The sealing between the base structure and the lid is very problematic. Although several ring steps are foreseen, which provide a labyrinthine seal, it is hardly possible for a seal complying with the regulations for jet-proof installation equipment to be realized.


SUMMARY OF THE INVENTION

Object of the invention is a complete seal of the adapter box in the area of the cover and of a connector, so that jet-proofing is attained.
According to the invention, this object is solved in that the sealing strip has a trough-shaped section overlapping the sealing ridge and that the sealing ridge has two tongues separated by a gap.
The invention differs from the prior art in that the trough-shaped section on the end face of the tongues forms a space so that the sealing surface and thus the capillary leakage paths are interrupted in this area. The capillary pressure is thus cancelled. As a result of this, a perfect sealing can be attained, as the outer leakage paths end in this space, so that no water can penetrate even into this gap. The tongues ensure a perfect sealing as a result of the deformation within the trough-shaped section.
An improved sealing effect is attained in that the width of the sealing ridge is greater than the inside width of the trough-shaped section.
In order that the capillary leakage paths are interrupted for a large path section, the invention provides according to a further development for the trough-shaped section to leave a space free above the ends of the tongues when the adapter box is in an assembled state.
An additional seal is attained in that the sealing ridge has an annular external step with a peripheral trough and that the sealing strip engages with a face edge in the peripheral trough.
An external seal is assured in that the external step and the face edge each have conical surfaces.
This external seal is designed with exceptional reliability in that the external conical surface of the face edge is steeper than the corresponding conical surface of the peripheral trough.
A seal in the connector area is attained in that each window formed as a cutout in a wall has a contour consisting of straight sections and centric arc sections with the same radius, which together form in each case a one nth partial arc, with n=3, 4 . . . , of the full arc, that a collar of the sealing flange of the connector has an external contour identical with the contour of the window and that the neck of the sealing flange has in each case a partial section extending over one nth partial arc from one arc section starting from the center of a straight section and a straight section running at a tangent to it.
The sealing flanges of the connectors are designed as swivel connections that are tightened firmly on being inserted by being swivelled through a partial arc.
The interlocking path is determined in that the arc section of the partial section of the neck extends across half the partial arc.
Firm tightening and a good seal are attained in that the underside of the flange has in each case a sloping profile rising towards the arc section.
A right-angled alignment is attained in each case in that the contour of the window and the neck profile are dimensioned in a four-fold manner respectively. The connector can thus be aligned in four different positions, each of them offset at 90.degree. to each other.
A high degree of security against unintentional actuation is attained in that, in relation to the insertion direction of the flange, the arc section of the neck profile extends towards the straight section in clo

REFERENCES:
patent: 982535 (1911-01-01), Rudkiewicz
patent: 1131399 (1915-03-01), McGinley
patent: 4103101 (1978-07-01), Maier
patent: 4620061 (1986-10-01), Appleton

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