EP0061587A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A socket member for an electrical connector and a method for making same
Assignee: CONNEI SpA
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Filing: 1982-02-25
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Granted: —
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Expires: 2002-02-25
Abstract
Abstract The socket member for electrical connectors is obtained thanks to permanent deformation by twisting of a cylindrical sleeve of suitable metal, provided with through slots (2) arranged on its cylindrical surface and inclined with respect to the longitudinal axis of the sleeve. Each slot, previously to its twisting deformation, presents a transverse profile with sides (102. 202) diverging towards the exterior, and said sides meet at the ends of the slot forming curvilinear edges (302, 402) in such a manner that the vertices of said edges located on the inner surface of the sleeve are nearer to each other with respect to the vertices of the edges located on the outer surface, which are farther from each other. The particular shape of the slots contributes in a determining manner to the correct deformation upon twisting of the sleeve, so that the strips defined by the slots tend to be arranged according to a family of straight generatrices of a hyperboloid of one sheet, taking in consideration the composite stresses of traction-compression and torsion which take place precisely upon twisting of the sleeve. In this manner there is avoided the formation of irregularities, such as sharp edges or warped surfaces, in the areas of contact at the interior of the thus formed socket.
Inventors
- 👤 Giovanni Ghigliotti
- 👤 Attilio Lancella
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/10; H01R13/11; H01R13/111; H01R43/00; H01R43/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
201 words
1) A socket member for pin-and-socket electrical connectors, of the type in which the inner areas of the socket member intended to establish the contact with the pin member are, when the said pin member is not inserted, arranged at least approximately according to a family of straight generatrices of a hyperboloid of revolution of one sheet, said socket being obtained by means of permanent deformation by twisting, according to a predetermined angle, of a hollow cylindrical body of a suitable metal provided with through slots arranged along its cylindrical surface and inclined with respect to the longitudinal axis of said cylindrical body, said twisting being directed in the senf of inclinna of the slots Charctemined by the fact that each slot (2) previously to its twisting deformation, presents a transverse profile with sides (102, 202) which diverge towards the exterior, and said sides (102, 202) meet at the ends of the slot forming curvilinear edges (302, 402) in such a manner that the vertices of said edges located on the inner surface of the socket member are nearer to each other, with respect to the vertices of the edges located on the outer surface, which are farther from each other.
Claim 2
Dependent Claim
201 words
1) A socket member for pin-and-socket electrical connectors, of the type in which the inner areas of the socket member intended to establish the contact with the pin member are, when the said pin member is not inserted, arranged at least approximately according to a family of straight generatrices of a hyperboloid of revolution of one sheet, said socket being obtained by means of permanent deformation by twisting, according to a predetermined angle, of a hollow cylindrical body of a suitable metal provided with through slots arranged along its cylindrical surface and inclined with respect to the longitudinal axis of said cylindrical body, said twisting being directed in the senf of inclinna of the slots Charctemined by the fact that each slot (2) previously to its twisting deformation, presents a transverse profile with sides (102, 202) which diverge towards the exterior, and said sides (102, 202) meet at the ends of the slot forming curvilinear edges (302, 402) in such a manner that the vertices of said edges located on the inner surface of the socket member are nearer to each other, with respect to the vertices of the edges located on the outer surface, which are farther from each other.
Claim 3
Dependent Claim
38 words
2) A socket member according to claim 1, characterized by the fact that the sides (102, 202) of each slot (2), previously to the twisting deformation, form between each other an angle (Z) comprised between 30° and 70°.
Claim 4
Dependent Claim
26 words
3) A socket member according to claim 2, characterized by the fact that the angle formed by the sides of the slot is of about 60°.
Claim 5
Dependent Claim
31 words
4) A socket member according to claim 2, characterized by the fact that the sides of the slot are inclined symmetrically with respect to the longitudinal median plane of the slot.
Claim 6
Dependent Claim
31 words
5) A socket member according to claim 2, characterized by the fact that the sides of the slot are inclined asymmetrically with respect to the longitudinal median plane of the slot.
Claim 7
Dependent Claim
43 words
6) A socket member according to claim 1, characterized by the fact that the slots (2) are arranged, previously to the twisting deformation, inclined with respect to the longitudinal axis of the hollow cylindrical body of an angle comprised between 5° and 20°.
Claim 8
Dependent Claim
37 words
7) A socket member according to claim 6, characterized by the fact that the inclination angle of each slot with respect to the longitudinal axis of the hollow cylindrical body is preferably comprised between 8° and 10°.
Claim 9
Dependent Claim
36 words
8) A socket member according to claim 1, characterized by the fact that the hollow cylindrical body presents, at least in the zone interested by the through slots (2), a cylindrical wall having a uniform thickness.
Claim 10
Dependent Claim
40 words
9) A socket member according to claim 1, characterized by the fact that the hollow cylindrical body presents, at least in the zone interested by the through slots (2), a cylindrical wall having a non-uniform thickness in the longitudinal direction.
Claim 11
Dependent Claim
36 words
10) A socket member according to claim 9, characterized by the fact that the hollow cylindrical body presents at its exterior a conical profile which is converging towards the inlet opening of the socket member itself.
Claim 12
Dependent Claim
84 words
11) A method for the manufacture of socket members for electrical connectors, in accordance with the preceding claim 1, characterized by the fact of comprising the following operational steps: a) obtaining a cylindrical sleeve of suitable metal, presenting an inner axial bore; b) cutting of the through slots (2) arranged on the cylindrical surface of the sleeve by means of a double angle cutter; c) twisting of the sleeve according to a predetermined angle in the same direction as the inclination of the slots.
Claim 13
Dependent Claim
56 words
12) A method according to claim 11, in which the inner bore of the cylindrical sleeve presents initially a diameter which is smaller than the desired final diameter, and the inner surface of the said inner bore is finish bored and polished up to the desired final diameter after the cutting of the through slots (2).
Claim 14
Dependent Claim
23 words
13) A method according to claim 11, in which the cylindrical sleeve is obtained by lathe machining and boring of solid metal bar.
Claim 15
Dependent Claim
26 words
14) A method according to claim 11, in which the cylindrical sleeve is obtained by punching of a blank from a metal sheet and subsequent shaping.
Claim 16
Dependent Claim
25 words
15) A method according to claim 11, in which the cylindrical sleeve is obtained by cutting according to predetermined lengths of a continuous metal pipe.
Claim 17
Dependent Claim
23 words
16) A method according to claim 11, in which the slots (2) are obtained by means of cuttizig effected by double equal-angle cutters.
Claim 18
Dependent Claim
23 words
17) A method according to claim 11, in which the slots (2) are obtained by means of cutting effected by double unequal-angle cutters.
Claim 19
Dependent Claim
47 words
18) A method according to claim 11, in which prior to the obtaining of the through slots, the outer surface of the cylindrical sleeve is machined in such a manner as to obtain a cylindrical wall presenting a non-uniform thichnessin the longitudinal direction of the sleeve itself.
References Cited (Backward Citations)
No citation records indexed.
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