Insulated insert with high electric strength

Abstract

The object of the disclosure is to construct an insert which, given the simplest structure, is optimally insulated and and voltage-stable. This goal is achieved in that the insert is composed of a jacket housing of highly insulating synthetic, for example, amino-butadienestyrol (ABS) or the like, and of a layer packet comprised of at least two shielding plates of, for example, aluminum or sheet steel, with a printed circuit board structure seated between them as a carrier for those components which are required for the energy and/or signal transmission, said layer packet being designed so as to be insertable into the highly insulating jacket housing.

We claim as our invention: 
     
       1. An insulated insert assembly comprising an insulated insert with high electric strength for insertion into a device recess of a device housing, said insulated insert comprising a jacket housing (94) of highly insulating synthetic material, a layer packet comprised of at least two shielding plates (122, 123) of metallic material, and a printed circuit board structure (120, 121) seated between said shielding plates, and a transmission component carried by said layer packet, said layer packet together with said transmission component being designed so as to be insertable into the highly insulating jacket housing (94), characterized in that the jacket housing (94) is open only at the front side to provide a front opening, said insert having a front plate (118) carried by the layer packet (120 through 123) for closing the jacket housing at its front side, said front plate fitting tightly in its dimensions into the front opening of the jacket housing (94), said insert having a back part (119) at the back thereof, the layer packet comprising a printed circuit board structure formed of a prescribable number of printed circuit boards (120, 121) which are secured at the front side to the front plate (118) of the insert and are secured at the back to said back part (119), the two metallic shielding plates (122, 123) being connected to the front plate (118) of the insert and to the back part (119) partially by interfitting type connection and partially by a screw-type connection. 
     
     
       2. An insulated insert assembly according to claim 1, which each shielding plate having claws (124, 125) and flat edges (126, 127; 128, 129), the front plate (118) having an inside shoulder and claw-receiving recesses therebelow, characterized in that, for an interfitting type connection to the front plate (118) of the insert, each shielding plate (122, 123) has the claws (124, 125) at its front edge disposed such that, when the respective shielding plate is seated with its flat edges (126, 127; 128, 129) on the inside shoulder of the front plate (118) of the insert, the claws (124, 125) engage in the recesses below the shoulder, so that a type of clamped connection for supporting the front edge of the two shielding plates is produced at the shoulder. 
     
     
       3. An insulated insert assembly according to claim 3, characterized in that, for producing a screw-type connection, the back edges (130, 131) of the shielding plates (122, 123) lie on the edges of the back part (119) at respective seating locations, and are screwed to the back part in the vicinity of the seating locations via screw holes (132, 133, 134). 
     
     
       4. An insulated insert assembly according to claim 1, characterized in that the central parts of the shielding plates (122, 123) have claws (136) engaging resiliently against the side edges of the printed circuit boards (120, 121) arranged between them. 
     
     
       5. An insulated insert assembly according to claim 1, characterized in that, for the purpose of further shielding, the back part (119) carrying the printed circuit boards and the shielding plates at their back ends is manufactured of metallized synthetic material, and the front plate (118) of the insert is likewise provided with a metallic shielding layer. 
     
     
       6. An insulated insert assembly according to claim 1, with said layer packet having means for providing a galvanically separating coupling location for transmission between said transmission component on said layer packet and a transmission component at the inside of the device housing when the insert is inserted into the device recess. 
     
     
       7. An insulated insert assembly according to claim 6, characterized in that said transmission component on said layer packet comprises an energy transmission component (137) for the transmission of energy via the galvanically separating coupling location, said back part (119) carrying said energy transmission component in a floating and resilient manner. 
     
     
       8. An insulated insert assembly according to claim 6, with said layer packet having an insulated partition wall (98) with reduced thickness of not greater than about one millimeter at the galvanically separating coupling location for accommodating transmission via said transmission component. 
     
     
       9. An insulated insert assembly according to claim 6, with said jacket housing (94) having a wall (98) via which light transmission is to occur, said wall (98) having windows (100, 101) of synthetic material having light transmission characteristics matched to the light to be transmitted, a luminescent diode (138) and a light receiver (139) carried by the insert in alignment with the respective windows. 
     
     
       10. An insulated insert assembly according to claim 6, with said transmission component on said layer packet comprising optical signal transmission means (138; or 139) to provide for signal transmission between the transmission component of the layer packet and a transmission component at the inside of the device housing when the insert is inserted into the device recess. 
     
     
       11. An insulated insert assembly according to claim 10, with said means providing said galvanically separating coupling location comprising a wall (98) of the jacket housing having a synthetic window (100; or 101) aligned with said optical signal transmission means (138; or 139) and having light transmission characteristics matched to the light being transmitted, said window being disposed air- and water-tight and high-voltage resistant in said wall. 
     
     
       12. An insulated insert assembly according to claim 6, with said means providing said galvanically separating coupling location comprising a wall which is of reduced thickness over a region (99) thereof aligned with said transmission component (137) in order to keep the spacing at the galvanically separating coupling location small and thus to keep energy losses low, said wall providing an insulated partition between said transmission component (137) on the side of said insert and a cooperating transmission component on the side of the device housing when the insert is inserted into the device recess. 
     
     
       13. An insulated insert assembly according to claim 12, with means resiliently biasing the transmission component (137) into precise flatwise engagement with said wall (98) at the reduced thickness region (99) thereof. .Iadd. 
     
     
       14.  An insulated insert with high electric strength for insertion into a device recess of a device housing, comprising: (a) an elongated jacket housing of highly insulating synthetic material, said housing being open only at its front side to provide a front opening, said housing having a back wall and longitudinal sides, said longitudinal sides having corner portions,   (b) a front plate that fits tightly into said front opening,   (c) signal receiving means for receiving electrical signals, said signal receiving means being attached to said front plate,   (d) electrical components disposed in the interior of said jacket housing and electrically connected to said signal receiving means for processing said electrical signals, said components comprising a transmission component,   (e) means at said back wall of said housing for providing a galvanically separating coupling location for transmission between said transmission component in the interior of said housing and a transmission component at the inside of a device housing when the insert is inserted into said device recess, and   (f) glide grooves extending along said longitudinal sides of said jacket housing, each of said glide grooves forming a well-rounded channel at corner portions of said elongated jacket housing for slidably supporting said insert when introduced into said device recess. .Iaddend. .Iadd.   
     
     
       15.  An insert according to claim 14, wherein said jacket housing is in the form of a rectangular parallel piped and wherein said glide grooves extend along all four corner portions longitudinal sides of said elongated jacket housing. .Iaddend. .Iadd. 
     
     
       16.  An insert according to claim 14, wherein said jacket housing is formed of amino-butadiene-styrol. .Iaddend. .Iadd.17. An insert according to claim 14, wherein one of said glide grooves of said jacket housing has a latch-receiving recess for receiving a latch when said insert is inserted into a device recess. .Iaddend. .Iadd.18. An insert according to claim 17, wherein said latch-receiving recess is provided with a block of hard material against which said latch abuts when said insert is inserted. 
     
     
        .Iaddend. .Iadd.19.  An insert according to claim 14, wherein said grooves are proportioned to engage a corresponding support on said device housing such that said longitudinal sides of said insert are spaced from said device housing thereby preventing contact between said longitudinal sides and said device housing when said insert is placed in said device recess. .Iaddend. .Iadd.20. An insulated insert for insertion into a device recess of a device housing, comprising: (a) an insert housing of highly insulating synthetic material, said insert housing having a front wall, a back wall, longitudinal sides and elongated corner portions disposed along said longitudinal sides,   (b) signal receiving means attached to said front wall for receiving electrical signals, and   (c) signal coupling means at said back wall for providing a galvanically separating coupling location for transmission between said insert and said device housing when the insert is inserted into said device recess,   (d) said insert housing having elongated well-rounded glide support means in the form of grooves disposed along siad elongated corner portions of said insert housing thereby providing for limited surface interengagement with said device housing such that the insert is suspended by limited surface engagement with said device housing during insertion into said device recess. .Iaddend.