CN1055259A

CN1055259A - Wire spring socket for curved bus

Info

Publication number: CN1055259A
Application number: CN 90108108
Authority: CN
Inventors: 本人请求不公布姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-09-28
Filing date: 1990-09-28
Publication date: 1991-10-09

Abstract

A kind of wire spring socket for curved bus that is used for electric connector, be in a wire spring socket that comprises interior cover, overcoat and spring wire, many spring wires are arranged by single leaf hyperboloid that circles round, form the big and middle little shape in two ends, each spring wire is then under the situation that does not also have contact pin to insert, just according to the direction bending of arching upward, thereby become no prestressing force wire spring socket for curved bus towards central axial line.

Description

Wire spring socket for curved bus

The present invention relates to electric connector, particularly relate to the contact of multipolar electric connector.

Electric connector is made of jack and contact pin coupling usually, and its core component is flexible conduction contact and its zygosome.At United States Patent (USP) 3,107, No. 966 and 3,470, in No. 527, product and manufacture method that title is " electric connector jack " are disclosed.This is a kind of widely different hyperboloid wire spring socket that revolves, and is revolved bi-curved straight edge line and arranges by single leaf is widely different by many elastic metallic yarns (to call spring wire in the following text) in the hole, forms the big and middle little shape in two ends.When contact pin entered jack, each spring wire was close on the contact pin by distortion, thereby guaranteed between jack and the contact pin good electricity and thermo-contact are arranged.According to the design theory of this wire spring socket, each spring wire must be tightened up under the prestressing force effect in the hole, is strict straight edge line state, thereby the manufacturing process complexity, requires the element precision height, assemble also difficult, the cost height.

The objective of the invention is to avoid weak point in the above-mentioned prior art and provide a kind of manufacturing process simple, require that element precision is lower, assembling easily, be fit to produce in enormous quantities, thereby the lower wire spring socket product of cost, Here it is no prestressing force wire spring socket for curved bus.For easy, below no prestressing force wire spring socket for curved bus note that the present invention is proposed make QHC, and prestressing force straight edge line wire spring socket of the prior art is written as HC.

Purpose of the present invention can reach by following measure, in a wire spring socket that comprises interior cover, overcoat and spring wire, many spring wires are arranged by the widely different hyperboloid that revolves of single leaf, form the big and middle little shape in two ends, each spring wire then under the situation that does not also have contact pin to insert just according to the direction bending of arching upward towards central axial line, thereby become no prestressing force wire spring socket for curved bus, just create certainly than being easier to.

Figure of description drawing of the present invention is described as follows:

Fig. 1 shows the mechanical model of QHC, and 1 is that each spring wire is arranged the wire spring socket that forms by the widely different hyperboloid that revolves of single leaf on it, the 2nd, and the contact pin that matches, K are a mouthful circle, and H is a gorge circle, and V represents the contact pin direction of motion;

Fig. 2 is the QHC that is used for electric connector, and wherein 4 is interior covers, the 5th, and overcoat, the 9th, spring wire, Z represents central axial line;

Fig. 3 is the flexural deformation schematic diagram of spring wire, and wherein Fig. 3 a is used for straight edge line, and Fig. 3 b is used for bent bus, 9 ' be the shape that contact pin enters the bending of jack rear spring silk;

Fig. 4 is the QHC as little current connector, and wherein Fig. 4 a is divided into

protheca

6 and 7 two in back cover to overcoat,

cover

6,7 and caudal peduncle 8 before and after Fig. 4 b then is divided into overcoat;

The equally distributed plug 13 of control spring wire when Fig. 5 is the assembly line spring socket;

Fig. 6 is the bipolar electric connector that adopts Fig. 2 QHC;

Fig. 7 adopts Fig. 4 multipole little current connector QHC, that be used for printed circuit board (PCB);

The assembling process of Fig. 8 diagrammatic sketch 2 QHC.

The invention will be further described below in conjunction with two most preferred embodiments: QHC is used for the most preferred embodiment of electric connector and sees Fig. 2 and Fig. 6, cover 4, overcoat 5 and spring wire 9 in comprising.Many spring wires 9 are arranged by the widely different hyperboloid that revolves of single leaf in the jack, form the big and middle little shape in two ends, but allow in assembling process, an amount of bending just takes place by predetermined direction in each spring wire under the situation that does not also have contact pin to insert, and especially allows them arch upward towards central axial line Z.In fact, see Fig. 1, each spring wire 9 keeps set a distance r ', decides angle of cut α around central axial line Z, and is evenly distributed along the inwall of interior cover 4, constitutes a widely different enveloping surface M that revolves that mouth circle K is big, gorge circle H is little.Because spring wire 9 is subjected to both ends bending stress σ in assembling process _WEffect, the body of spring wire 9 is inevitable to arch upward to central axial line Z.Therefore under the condition of same geometric parameter, the gorge circle radius r of QHC ' the be less than gorge circle radius r of HC, i.e. r '＜r, this is the important difference feature of QHC and HC.Fig. 1 is the mechanical model of QHC, and the diameter d of contact pin 2 is slightly less than a mouthful round K on the figure, but greater than gorge circle H, d＞2r '.During work, contact pin 2 imports from a mouthful circle K, crosses gorge circle H, and each spring wire 9 is subjected to contact pin 2 compressings, moves outside the diametric(al) of contact pin 2, occurs bending and deformation.Each spring wire 9 is close on the cylinder of contact pin 2, forms the path that electrically contacts of a plurality of parallel connections, thereby connects reliably working stability.Each spring wire 9 is subjected to the schematic diagram of contact pin 2 compressing distortion to see Fig. 3, has only drawn the flexural deformation situation of a spring wire 9 on it, and wherein Fig. 3 a is the situation of straight edge line wire spring socket, and Fig. 3 b is the situation of wire spring socket for curved bus provided by the invention.

Make for convenient, overcoat 5 can be designed to form by two to three.In Fig. 4 a, before overcoat 5 is divided into (outward) cover 6 and afterwards (outward) overlap 7 two.For preventing that them from coming off, should make roll extrusion arc groove or press point to handle at protheca 6 and back cover 7 joint J.(outer) cover 6 before in Fig. 4 b, then overcoat 5 being divided into, back (outside)

overlap

7 and 8 three of caudal peduncles.Between back cover 7 and the caudal peduncle 8, look the concrete structure difference and can adopt spot welding, glued joint, be threaded or press to be full of to cooperate and combine.Fig. 2 structure is used for electric connector, has vertical radiating groove m on its overcoat 5; Fig. 4 structure is as little current connector, and overcoat is 6 and 7 smooth, wall thin, do not consider heat radiation.

The interior cover 4 of QHC and overcoat 5(or 6,7) make with brass, spring wire 9 usefulness beryllium-bronze and phosphor bronzes, caudal peduncle 8 usefulness tin bronzes are made.The coating surface layer can be selected good conductivity such as gold, silver, palladium, the metal of stable chemical performance for use.Also want the anticorrosion lubricant of dip-coating at last.

QHC is used for the most preferred embodiment of little current connector and sees Fig. 7, comprises socket 21 and plug 22, and this is a kind of electric connector that is used for printed circuit board (PCB), and volume is little, and spring wire 29 intensity are low, so overcoat is made up of protheca 26 and 27 two in back cover.

During the QHC assembling, must utilize a plug that oblique notches 13 control spring silks 9 evenly to distribute, see Fig. 5.Plug 13 keeps H9/C9 movingly with the internal diameter of interior cover 4; Groove and axis angle of cut α on the plug 13, consistent with the QHC design; The groove diameter is 1.7～2.2 times of spring wire 9 diameters, and the groove number is consistent with the radical of spring wire 9, and evenly distributes.For the most preferred embodiment of Fig. 2, used tool also will utilize a collar 14 during assembling except that described plug 13, and long 2 millimeters of this collar, internal diameter be with the internal diameter unanimity of overcoat 5, the two ends rounding, and 0.5 millimeter of wall thickness is made with H62-y.Assembling process is described as follows referring to Fig. 8:

A. each spring wire 9 is passed from each hole, plug 13 top layers, make the one side stretch out 2.5 millimeters, the termination flushes;

B. interior cover 4 is placed on the plug 13, withstands the A face;

C. with the termination of spring wire 9 along interior cover 4 end face reflexeds, make the termination be attached on the outer surface of cover 4;

D. axially firmly press the collar 14 along

plug

13,1～1.5 millimeter of compression distance;

E. the interior cover 4 and the collar 14 are withdrawed from simultaneously cover 2.5 in spring wire 9 grows from plug 13 ^{+ 0} _-0.5The millimeter place is cut off;

F. the semi-finished product transposing direction that heading is unloaded is contained on the plug 13;

G. press the afterbody that C money way is disposed spring wire 9;

H. axially firmly press overcoat 5 along plug 13;

I. overcoat 5 is passed forward, is removed the collar 14, interior cover 4 is depressed into the hole at the bottom of;

J. unload the QHC 1 that assembles from plug 13, check presentation quality, the evaluation technology index.

With prior art relatively, the advantage of no prestressing force wire spring socket for curved bus of the present invention (QHC) is with it and cylinder type contact pin coupling, can make the electric connector of high reliability. This electric connector can transmit the power current of kiloampere, also can transmit the small-signal of microampere order. Its insertion force is little, connect soft, the seldom wearing and tearing in thousands of times connections, separation process of contact idol; Its contact resistance is little and stable, and pressure drop is little, hear rate is low, the temperature rise of product is low, even run into intense impact, vibration and rapid variations in temperature, does not also have the significant change of resistance value and produces the above outage of 1 microsecond; The fatigue performance of its long-term work is very excellent, can in the long-term connection procedure more than 10 years, keep good, steady operation. Particularly, because do not apply prestressing force, each spring wire all is assembled into bent bus, thereby manufacturing process is simple, requires element precision low, and assembling be fit to produce in enormous quantities, and cost is very low easily.

Claims

1, a kind of wire spring socket for curved bus, cover 4, overcoat 5 and spring wire 9 in comprising, many spring wires 9 are arranged by the widely different hyperboloid that revolves of single leaf in the hole, it is big and middle little shape is characterized in that to form two ends: each spring wire 9 under the situation that does not also have contact pin to insert just according to the direction bending of arching upward towards central axial line.