DE7304041U - Socket strip for multi-pole plug connections - Google Patents

Description

Dipl.Lug.Hans Rilling

83 Landshut

Schönbrunner Str. 22 Landshut, February 2, 1973

Socket strip for multi-pole plug connections.

The invention relates to a socket strip for multipole Plug connections with contact springs, the at least two opposing, each one contain other mechanical vibration behavior exhibiting spring tongues of different widths.

Multipole plug connections consisting of a socket strip fitted with contact springs and one with the male connector engaging male connector are well known. If such connectors are exposed to a difficult operating condition of mechanical vibrations, the problem arises flawless contact, as contact springs on the socket strip can resonate and are no longer permanently pressed against the contact pins of the male connector. One that difficulty The relevant contact piece (socket strip) is from the German utility model 69 18797 known. A contact spring tongue is from several, the socket piece forming resilient tongues through a punched longitudinal slot on their free End subdivided again to increase the number of contact points and secure contact all in one large frequency range of mechanical vibrations

-2-

7304041 08/25/77

different bending vibration natural frequencies of the Ensure contact spring tongues.

In the known contact piece described, the individual contact spring tongues are stamped with the exception of the one The longitudinal seat is the same in length and cross-section. The longitudinal slot thus requires a different spring force of the individual contact spring tongues. The result is a one-sided force the tongues of a contact spring on the associated male connector. The contact pins of the male connector are therefore mechanically unbalanced, causing disruptive tilting or tilting of the male connector can cause.

The object of the invention is now to provide a socket strip for multi-pole plug connections create, on the one hand, a secure contact even under the action of mechanical vibrations ensures a wide frequency range and, on the other hand, ensures a symmetrically acting contact pressure. In order to achieve this object, the invention is used in a socket strip of the type mentioned at the outset proposed that with essentially the same effective length, the different widths formed Spring tongues also have a different material thickness, so that the product of the width and the third power of the material thickness for the individual spring tongues is at least approximately the same in each case.

The invention is based on the knowledge that changes in width, length and cross-section (material thickness) of spring tongues influence the mechanical vibration behavior and the spring stiffness differently. It can be shown that with two differently dimensioned spring tongues the point-like on one Mechanical forces acting on the contact pin for equal

-3-

7304041 08/25/77

large spring travels coincide if the widths b ,, and b ~, lengths 1 * and 1 ~ and material strengths (thicknesses) d ^. and d _{o of} two spring tongues satisfy the condition ¹ I * ^ 2 * ^d 2 ^β ^ 2 * ^ 1 ' ^d 1, while the mechanical io key frequencies differ from eteba vuneiuaiiuex,

2 2

if d, -. Ip not equal to dp. 1,. is. With the same length of the spring tongues therefore always fulfills the task set according to the invention. About the To bring about a different mechanical vibration behavior would be, among other things, length of the spring tongues therefore unsuitable because the effective spring deflection during the process of insertion (opening of the contact springs) and is not the same when plugged in.

The invention will be explained in more detail below with reference to the figures of the drawing. It shows enlarged scale

Figure 1 shows a stamped part as a basis for producing the contact spring of a socket strip according to the invention and

FIG. 2 shows a contact spring produced from the stamped part of FIG. 1 in a front view.

The stamped part denoted by 1 in FIG. 1 is to be regarded as a development of the contact spring (spring bushing) of FIG. This contact spring has two spring tongues 2 and 3 "which emanate from a common base 4, a a contact post for a Vickeldrahtverbindung is at the bottom in Figure 2 to the longitudinal axis of the contact spring at 6 goose-necked extension 5 for contacting the contact spring preferably in the form present. The spring tongues 2 and 3 of the same length have different widths b ^ and bp. As can be seen from Figure 2, the material thickness (thickness) d, is also. and d ~ of the two spring tongues 2 and 3 different. These differ-

7304041 08/25/77

Liche material thickness can preferably by plastic Deformation of the section of the CVfcanzteiles 1 forming the spring tongue 3 can be achieved. Width and material strength the spring tongues 2 and 3 are dimensioned so that the cond ing uiig

is satisfied. This dimensioning ensures a divergent mechanical vibration behavior of the two Spring tongues 2 and 3i while at the same time the rigidity both tongues is the same and thus matching spring forces, so symmetrical pressure forces on one contact pin to be inserted is present.

The invention is not limited to the illustrated embodiment. In particular, the contact spring of a socket strip according to the invention can also contain more than two spring tongues; the contact springs also do not need to be divided into hexagons from a Sx; eilziteil. It is essential only that each spring tongue m the manner specified according to the invention is dimensioned to ensure consistent spring pressure at different mechanical natural frequencies.

-5-

7304041 08/25/77

Claims (2)

byisverbs 1) Socket strip for multi-pole plug connections with Contact springs, the at least two opposing, each a different mechanical Vibration behavior exhibiting springs of different Width included, characterized in that with essentially the same effective length the spring tongues of different widths \ C, ^ / y C1U.WJ1 C-L J. J. C lUll / CJ.OVUJ.CUiJ. ^ UC 110.OCX-LCLU-OIfCLXXLC (Thickness d ^, d ₂ ) have such that the product of the width and the cube of the material thickness for the individual spring tongues is at least approximately the same. 2) socket strip according to claim 1, characterized in that that the contact springs with the spring tongues (2,3) _s in a manner known per se from a U-shaped to- ^A " bent stamped part (1) -made, where the different material thicknesses (d,., dp) of the spring tongues are produced by plastic deformation untex ¹ taking into account possible ■ widening. 7304041 08/25/77