SU1056487A1 - Chassis earth for electronic units - Google Patents

Abstract

RADIATED CASE FOR RADIO ELECTRIC BLOCKS, containing chassis. (A casing with contact shelves stopped on it and contact elements located between them and the chassis, made in the form of spring strips with bent petals, characterized in that, in order to improve reliability and ease of operation, the chassis is equipped with profiled supports on which 1 contact shelves of the casing, and the ends of the spring strips of the contact elements are curved, each contact element being fixed with its ends on the chassis with the possibility of reciprocating one th from 1SHH and reacting Otog petals mentioned contact element with the chassis.

Description

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This invention relates to radio electronics and is intended to protect electronic equipment located in the electronic housing from electromagnetism, disrupting its normal functioning.

A device for protecting ot electromagnet interference is known, which includes support with grooves in which contact strips and housing elements C1 are installed

The drawback of the known device is the need for high accuracy of the positioning of the supporting elements and the manufacture of the housing elements in order to ensure reliable contact, and also that the location of the housing influences the transition resistance between the contact spring and the heat.

The closest technical solution is a shielding housing for electronic units, comprising a chassis, a housing mounted on it with contact shelves and contact elements located between them and the chassis, made in the form of spring strips with bent petals 21.

A disadvantage of the known technical solution is that it is unreliable in operation and is inconvenient in operation.

The purpose of the invention is to increase the reliability of operation and convenience of operation.

- The goal is achieved by the fact that in a 3KjpaHHpymmeM package for electronic units containing a chassis mounted on it. a casing with contact shelves and contact elements located between them and a chassis, made in the form of spring pads; los with bent petals, the chassis is equipped with profiled supports on which the casing contact shelves are located, and the ends of the springs} of the first bands of contact elements are bent, each contact the element is fixed with its ends on the chassis with the possibility of reciprocating movement of one of them and the interaction of the bent petals of the contact element of the chassis

FIG. 1 shows a shielding housing, a cross section; in fig. 2 - the same, longitudinal slit on the contact element; in fig. 3 - contact element.

The device encloses the chassis 1 with profiled supports 2, in which the contact elements 3 are installed, the casing 4 with the contact shelves 5. To ensure the necessary movement of the contact element 3, when the casing 4 is pushed into the shaped supports 2 of the chassis 1, holes are made in it.

The specified contact element 3 is made in the form of a spring strip with curved petals 6 and ends 7 and 8, with a groove 9 in the chassis 1.

The contact elements 3 are made of a conductor w, its material, with an oval hole 10 at its curved end 8 and a hole 11 in the chassis 1.

Each contact element 3 is installed between the contact shelf 5 of the casing 4 and the chassis 5 and 1, fixed with its curved ends 7 and 8 on the chassis 1, with the curved end 7 passed through the groove 9 of the chassis 1 and rigidly fixed to it by means of a screw 12, and its curved end 8 is fixed on chassis 1 s

0 by the possibility of reciprocating movement through the oval hole 10, the hole 11 of the chassis 1 and the screw 13 located therein, the curved ends 7 and 8 are made differently sized with the slope {parts 5 and 14 and 15 respectively, and when the contact elements 3 are fixed to the chassis 1 the fastening of the curved ends 7 and 8 is located on opposite sides of the chassis b

When installing the casing 4 on the chassis 1, the contact shelves 5 press on the curved

K01SchY 7 and 8 contact elements 3 and at. lift them up the thickness of the contact shelf 5. At the same time, the curved petals are pressed against the chassis 1, and the contact element 3 is pressed against the contact shelves 5, ensuring a constant electrical contact.

The invention allows to repeatedly remove and install the casing without producing any additional work on the screening of the block, ensuring reliable operation and convenience in operation; eliminate the breakage of contact elements.

The device allows one to provide shielding of the housings of electronic devices and units with the help of one sliding casing, which will reduce the laboriousness of manufacturing by reducing the number and range of contact elements. and fastening elements, improve the appearance of the hull and simplify its assembly.

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Claims (1)

SCREEN HOUSING FOR RADIO ELECTRONIC UNITS, comprising a chassis, a casing with contact shelves mounted on it and contact elements located between them and the chassis, made in the form of spring strips with bent petals, characterized in that, in order to increase reliability in operation and ease of use, the chassis equipped with profiled supports on which the contact shelves of the casing are located, and the ends of the spring strips of the contact elements are made curved, and each contact element is fixed with its ends on B, with a reciprocating movement of one of them and interaction Otog petals mentioned contact element with the chassis. Cn QO • H