SU1120435A1 - Lamp-holder for tubular lamps - Google Patents

Abstract

CARTRIDGE FOR TUBULAR LAMPS, comprising a casing of electrically insulating material. On the basis of which the liner with contact elements is fixed, and the seal assembly, characterized in that 4to, in order to simplify it and increase the convenience of operation, the seal assembly is made in a sleeve sleeve, tightly mounted on the side surface of the liner having a trapezoidal ring collar and made from elastic material, ensuring its folding around the collar towards the base of the body under the action of axial force.

Description

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The invention relates to lighting technology, in particular to tubular lampholders, and can be used in lighting fixtures, pa. in the environment, adversely affecting the performance of contact systems.

Known compacted. tubular lamp cartridges comprising a housing in which the current-carrying parts are placed at the base, and a nut with internal threads for screwing into the housing, and the lamp and current-conducting parts are sealed with a series of rubber rings and metal washers. To fix the cap nut with the body of the cartridge in a certain position on the outer surfaces of the body and the nut, a special bracket II will be fastened.

However, such a cartridge structure is difficult to manufacture and operate with a large number of sealing rings), washers and threaded elements.

Also known are cartridges for a fluorescent lamp in a spray-proof design, comprising a body made of electrically insulating material with a protruding threaded part, a cap nut with a female thread, a rubber ring and a metal washer placed inside the nut, and a contact system 2J ,,

However, these cartridges have large dimensions and a significant number of threaded connections, rings and washers, unreliable contact with the lamp strings due to the presence of many contacting elements. In addition to the TorOj, replacing the lamp requires disassembling elements with threaded connections.

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The closest technical

The essence of the invention is a tubular lamp cartridge, comprising a body made of electrically insulating material with an annular groove made inside the said body around the entire perimeter, an O-shaped sealing ring made of an elastic material and a spring-loaded axially moving insert with contact elements located at the base of the body . In the working position, the insert is pressed against the bottom of the base, providing mutual sealing. L3J.

However, the known cartridge is laborious to manufacture, has large dimensions, does not provide reliable sealing in cases of technological misalignment of the bases and the lamp tube and non-parallelism of the ends of the bases. The base of the lamp is in a zone that is not compacted from the harmful effects of the environment.

The purpose of the invention is to simplify the design, increase ease of operation.

This goal is achieved by the fact that in the tubular lamp cartridge, comprising a body of electrically insulating material, on the basis of which the liner with contact elements is fixed, and the seal assembly, the latter is made in the form of a cuff tightly mounted on the side surface of the liner having an annular, trapezoidal shoulder form, and made of elastic material, ensuring its folding around the collar towards the base of the body under the action of axial force.

Figure 1 shows the cartridge in the expanded (working) position, a longitudinal section; figure 2 - the same, in the collapsed position.

The cartridge contains a housing 1 made of an electrically insulating material, a sealing assembly 2, made in the form of a cuff of elastic material, and an insert 3 with a contact system.

For the passage of the mounting wires 4 in the bottom 5 of the seal assembly 2 - the cuff - holes 6 are made. In this case, the cylindrical part of the cuff 2 is made of a fixed 7 and a movable 8 parts with an annular collar 9 made of trapezoidal shape in the front (movable) part 8, perimeter. The movable part 8 is easily rotated around the collar 9 and is stably fixed in the collapsed position when rotated for every 180.

A sufficiently reliable seal is achieved due to the guaranteed tension of the cuff 2 on the base 10 of the lamp 11, which is made with an inner diameter smaller than the outer diameter of the socle.

The cartridge works as follows. Insert the liner 3 into the cuff 2 about the moment when the bottom 5 of the cuff and the 31 side surfaces of the liner 3 are tightly pressed to each other, after which the assembled assembly (cuff-liner) is rigidly fixed to the base 12 of the housing 1. Then fold the movable part 8 of the cuff together with the collar 9 in the direction of the liner 3 to the position (Fig. 2), when the stitches of the lamp 11 freely fit into the socket of the liner. After installing the lamp 11 under the 354, the part 8 of the cuff is deployed around the annular collar 9 towards the lamp 11, tightly covering the base 10 around the entire perimeter. The proposed cartridge is easy to manufacture and install, allows for easy maintenance of the lamps, quickly changing lamps at any height, while ensuring their reliable seal.

Claims (1)

CARTRIDGE FOR TUBULAR LAMPS, comprising a body of electrical insulating material, on the basis of which a liner with contact elements is fixed, and a sealing assembly, characterized in that, in order to simplify it and increase ease of use, the sealing assembly is made in the form of a cuff tightly mounted on the side the surface of the liner having an annular shoulder of a trapezoidal shape, and made of an elastic material, ensuring its folding around the shoulder in the direction to the base of the body under the action of axial force. FIG. / 1 1120435 2