SU1412014A1 - Connector for printed circuit-boards - Google Patents

Abstract

The invention relates to radio engineering. The connector for printed circuit boards has a housing 1 with an internal cavity divided by the ribs 5 into compartments in which the brush contacts 7 of elastic wires with a U-shaped bend fixed in series in a spiral, the ends of which are U-shaped and curved around the wall of the housing 1 with the formation of tails 14. The connector is reliable in operation. 2 hp f-ly, 5 ill.

Description

17

FIELD OF THE INVENTION The invention relates to radio engineering and concerns the design of a connector for the electrical connection of printed circuit boards.

The purpose of the invention is to reliably, simplify and cheapen the connector.

Fig, 1 shows the connector in the articulated position, obgcii view; on

figure 2 - contact element; nafig.Z view of L in figure 2; Fig.4 - contact element, general view, isometry; in FIG. 5 —BB in FIG. 1.

The connector for printed circuit boards contains a housing 1 with an U-shaped cavity and a printed circuit 2 with contact plates 3. The side walls 4 of the housing are provided with fins 5 in compartments 6 between which brush contacts 7 are installed

Each elastic brush contact 7 is made of spring metal wire, for example, of circular cross section, and its active part is made in the form of a flat spiral with loops 8, at least one. The width H of the helix depends on the density of laying the loops and their number, the diameter of the wires and is taken across the width of the plate 3 at the board 2. It is advisable to bend the loops with an M1-minimum gap S between adjacent -1 turns.

The active part of the contact element, made in the form of a flat spiral with loops 8, in the middle part of the U-about is differently bent so that the shape of the branches 9 and 10, and the middle part 11 is convex and forms a contact surface. The supporting ends of the spiral 12 at the spiral are bent relative to the branches 9 in the direction of the body. The ends of the spirals are bent U-shaped, worn on the wall 4 of the body and form the tails 13 and 14, while the jumpers 15 serve as supports when the contact element is hung on the wall 4 of the housing of the socket (Figs. 2 and 4), I

The length of the shank 13 is adopted by

the length of the helix, and the shank 14 serves as a terminal for connecting the conductor 16. At the same time, it is passed into the opening 17 of the housing and folded back in an L-shaped manner at the outlet of tides 18 and 19. Thus, the contact elements are fixed relative to the housing.

In order to ensure the location of conclusions in different planes tides

o

five

0

five

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five

0

five

0

five

18 and 19 make different, for example the thickness of the flange 19 is larger,. tidal planes, interacting with L-shaped bends, are parallel and located at a distance from one another. Conclusions 14 can be located in the same plane, but the grooves in the compartments 6 must be made in a checkerboard pattern (Fig., Dashed line).

When the board 2 connects to the connector, the contact plates 3 interact with the middle part 11 of the contacts 7, in this case the active part of the contact (helix) bends by h, and it bends towards the housing wall as shown by dotted lines (Fig. 2). The supporting end of the coils of the spiral 12 in this case slips along the wall of the cavity by an amount of 1. The contact pressing force is determined not only by the wire diameter, but also depends on the length of the active part of the contact and its bending angle, and the contact surface depends on the number of loops at the helix 12,

The wire contact, made of a single piece of wire, forms a spatial structure that combines the functions of the brush holder and its fastening elements in the housing.

Claims (3)

1. Connector for printed circuit boards, comprising a housing with an internal cavity divided by edges into compartments in which brush contacts are fixed, each of which is made of elastic wires with a U-shaped bend, arranged in a row and forming a convex contact surface, placed with the possibility interfacing with a printed circuit board, characterized in that, in order to increase reliability and simplify the design, the wires are successively interconnected in a spiral, the ends of which are U-shaped and bent, and encompass the wall of the housing, p When in use, at least one of them is fixedly connected to the housing. 2. A connector according to claim 1, characterized in that each contact is made of a single piece of wire, and one of its ends is missed in the opening of body ii of the unit, which is added (ITn-1). 3. The connector according to claim 2, I differ by the fact that the holes are arranged in rows at high tides one by one. for each row of openings, and each of the tides of each tide is flat-plane and matched with the H-shape of the bend No.t contacts, and the flat torpies of the tides are parallel and are located one distance from the other. / 2 FIG. 2 View a n ЕS 7 eight /. ll 12 -/four /four Fig.Z 6-6 Fy /four