EP0767978A1

EP0767978A1 - Electric plug connection

Info

Publication number: EP0767978A1
Application number: EP95924279A
Authority: EP
Inventors: Uwe Frinker; Peter Pszola; Stephan Peter Dieudonne
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 1994-06-29
Filing date: 1995-06-19
Publication date: 1997-04-16
Anticipated expiration: 2015-06-19
Also published as: CN1119843C; SK282667B6; CN1389960A; CN1154763A; US5906520A; SK282668B6; CN1198365C; DK0767978T3; CZ374596A3; WO1996000994A1; AU2885395A; ATE172817T1; CZ288203B6; PL177680B1; PT836245E; PL317990A1; SK167796A3; CZ286008B6; ES2123260T3; ES2188851T3

Abstract

The invention relates to an electric plug connection (1) with a plug holder (7) and a pin (3), especially a round-section pin (3), in which the plug holder (7) has a holding compartment in which is an axially compressible coil spring (2) having individual turns (5, 6) with the turns (5) largely having the same main diameter (dh). In order to reduce wear to the minimum even with frequent plug-in cycles and also not to increase the plugging force excessively, the invention proposes that the main diameter (dh) be larger than the outside diameter (d) of the pin (3) and that one or a few of the contact windings (6) have a smaller contact diameter than the main diameter (dh) and than the outside diameter (d) of the pin (3).

Description

00001 Electrical connector

00002

00003 The invention relates to an electrical connector

00004 with a connector receptacle and a connector pin, in particular

00005 in particular a round plug pin in cross section, wherein

00006 the connector receptacle has a receiving chamber and in

00007 of the receiving chamber is compressible in the axial direction

00008 re, single-turn helical spring arranged

00009 is net.

00010

Such an electrical connector is in the

Form known that in the insertion direction in front of the coil spring

00013 an axially displaceable Kontakt¬ in the receiving chamber

00014 piece is arranged with which the connector pin in

00015 face electrical contact with a Einsteck¬

00016 operation occurs. It is also known to be a tubular

To provide connector receptacles on which on an Außen¬

00018 surface a coil spring is pushed on, one

00019 winding of the coil spring through an opening in the

00020 connector receptacles secant the inside of the connector receptacle

00021 acquisition enforced. The plug pin is at a Ein¬

00022 cornering process due to the secant winding

00023 pressed against an inner surface of the connector receptacle, so

00024 that in this way the desired electrical contact

00025 come about.

00026

00027 These known connectors are each in ver¬

00028 unsatisfactory in several respects. In the back

00029 look at the axially movable contact piece it comes

00030 between the contact piece and the connector pin only

00031 a comparatively very small area to one

00032 electrical contact. It results from the small

00033 NEN, punctiform contact area a relative

00034 high wear on the contact surfaces, because Über¬

00035 impact and tear-off sparks are exactly in the area of this Form 00036 areas. The secant version

00037 extending spring turn results in a relatively high

00038 friction between the connector pin and the inner surface

00039 of the connector receptacle. The wear is particularly large 00040 when plugged in under electrical load and

00041 is pulled. Through tear-off and arcing spark

00042 fertilizer in the area of contacting is mechanical

00043 wear greatly promoted. 00044

In view of the prior art described above

Technology becomes a technical problem of the invention

00047 seen in attaching an electrical connector

00048 ben, in which on the one hand the lowest possible

00049 wear occurs even with high mating cycles, other-

00050 since the insertion force is not too high, all this

00051 good and reliable electrical contact. 00052

00053 This technical problem is first and foremost

Resolved in the subject matter of claim 1, wherein

00055 is focused on that the main diameter of the

00056 turns is larger than an outer diameter of the plug

00057 kerstiftes and that one or a few contact turns

00058 a smaller contact than the main diameter

Have 00059 diameter, which is also smaller than that

00060 outer diameter of the connector pin. According to the invention

00061 is an electrical connector directly through

00062 Insert the plug pin into the helical spring

00063 is enough. A reliable and reproducible contact

00064 ation is also achieved in that in

00065 course of the helical spring a programmed constriction

00066 is provided by a narrower turn. On-

00067 due to the given geometric conditions

00068 the plug pin is locked during a plug-in process

00069 casually into this narrower turn, the contact turn,

00070 with which the reproducible at this point 00071 electrical contact is given. It is also preferred

Provided that due to a cooperation between

00073 of such a contact turn and a front area

00074 of the connector pin the other turns of the helix

00075 in a front area of the coil spring

00076 contact system come to the connector pin. This occurs, for example, when the front end of the connector

00078 pin conical or dome-shaped tapering

Is 00079 forms. By interacting with the contact

00080 turn results in the effect that the coil spring

00081 tried to bend. This further leads to

00082 that the contact winding in the direction of insertion

00083 turns of the helical spring are on one side of the

Connect 00084 connector. The result is a variety of

Make a reliable electrical contact between

00086 reached the connector pin and the coil spring. A

Such an electrical connector is preferred

00088 a household appliance such as a vacuum cleaner or one

00089 food processor trained. With a vacuum cleaner, for example.

00090 for connecting a separate electric drive

Electric carpet brush having 00091. Regarding one

00092 practical application is also, for example

00093 Gm. Application 93 18 460.3 to refer to the applicant.

00094 The connector can be used as a control contact

00095 can be used as a main current contact. The invention

00096 connector system is also characterized by

00097 that ä≤m immersed in the spring pin to

00098 entering the pen tip into the spring constriction, the

00099 contact turn or contact turns, no significant

00100 value friction resistance is opposed. The

00101 electrical initial contact is made in the area of

00102 lying spring turns of the insertion opening

00103 locks. When reaching the contact turns

00104 starts the actual electrical contact. By

00105 between the spring and the tip of the connector pin 00106 tes building force on an off-center point of

00107 spring the spring is tilted by this point

00108 celt. This then overlaps with that

00109 spring pins located on the top

00110 surface of the connector pin and form a total

00111 large contact area. The low friction between

00112 see the connector pin and the spring turns up to

00113 actual contacting keeps the wear low.

00114 The necessary contact pressure between the coil spring

00115 and the connector pin is on the one hand between the

00116 of the contact turn and up to a rear forehead

00117 area remaining residual spring axially, and on the other hand

00118 by spring tipping and winding against the pin

00119 reached radially. The English contact turns

00120 of the insertion opening as first or last contact

00121 tacting the resulting rollover and

00122 Tear spark when plugging and pulling under electrical

00123 load on themselves and keep the actual contact

00124 area free of the resulting burn-up

00125 tracks. The degree of contact coverage, as is the case with

00126 connector systems specified according to the prior art

00127, can with the connector system described here

00128 can be equated to the plug feed between

00129 reaching the contact turn and the block state

00130 (ossification) the between the contact turn and the

00131 remaining end face of the receiving chamber

00132 residual spring is possible. The typical mechanical properties

00133 shaft of the coil spring and the structural design

00134 of the diameter of the receiving chamber, the receiving chamber

00135 and the spring insertion area, allow a feed

00136 tion of the round connector pin under large angular misalignment

00137 1er, radial and axial offset. With appropriate

00138 choice of .spring material and correct dimensional

00139 The mood of the spring contact system remains the spring force

00140 the coil spring and thus the contact force itself 00141 extreme climatic conditions up to the

00142 en received the connector system. Furthermore, the 00143 invention proposes that the contact turn in the insertion direction

00144 device of the connector pin to a rear area of the

00145 coil spring is arranged offset. Bpsw. is the

00146 contact winding at least in the second third of the helix

00147 formed spring, preferably also in the second half

00148 the coil spring. But it can also be an individual

00149 other arrangement can be made because of the position

00150 of the contact winding in the course of the helical spring from the

00151 free pin length, the most dimensionally unfavorable tolerance

00152 chain between the pin tip and the contact

00153 winding and the design of the contact chamber

00154 and the position of the contact element is dependent. The

00155 coil spring itself can in the usual way from one

00156 spring wire exist. A front end of the connector pin

00157 tes can be designed in various ways. E.g. half-

00158 spherical. A slightly conical shape is preferred

00159 Formation of the front end of the connector pin. The

00160 total coil spring suitably lies with one

00161 pretension in the connector receptacle or the

00162 mer one. This turns the coil spring into contact pressure

00163 a contact element on a rear face

00164, for example, as detailed below

00165 described, built to a safe electrical

00166 to ensure contacting of the leading strand.

00167 If a plug pin is inserted, it can be inserted in

00168 Dependence on the preload and the insertion pressure

00169 to lift the coil spring from the front

00170 contact surface of the insertion opening of the receiving chamber

00171 come. On the other hand, the coil spring lifts when it is pulled out

00172 of the connector pin not from the front

00173 surface on the contact element. A wall of the receiving

00174 chamber, which is arranged laterally to the coil spring,

00175 preferably extends at a distance that is at least 00176 least about a diameter of a spring wire

00177 which the coil spring consists of corresponds to the

00178 del spring. An outer diameter of the coil spring will

00179 exceeded on both sides by at least 0.5 mm. this applies

00180 for example for small pin diameters; the spring contact system

00181 ste can also be used if the design is different

00182 sets. This ensures that the

00183 delfeder a connector that is not centered

00184 pin can dodge to avoid getting too fast

00185 increasing, wear-promoting frictional force. On

00186 rear end of the coil spring is further preferred with

00187 connected to a contact element, the implementation

00188 through the receiving chamber in the radial direction

00189 electrical connection allows. The con-

00190 clock element also in the axial direction in the

00191 mer be fitted. In this embodiment, the

00192 receiving chamber preferably designed open at the end. The

00193 inserted contact part, for example. In the receiving chamber

00194 contact part inserted from behind, thus replacing the

00195 rear end face of the receiving chamber and offers the

00196 coil spring the system at the spring end. At the same time,

00197 through good contact between the coil spring

00198 and the contact part reached. The contact

00199 may be provided with a crimp connection, for un

00200 direct crimping of a strand. 00201

00202 Another object of the invention is characterized

00203 characterized in that the helical spring is a spiral spring,

00204 which has some turns, the diameter of which is larger

00205 is as the outer diameter of the connector pin and

00206 which has further turns, one opposite

00207 the outer diameter of the pin smaller

00208 knife. In this embodiment, the

00209 coil spring so formed overall funnel-like.

00210 There is also a contact system between the 00211 connector pin and the turns, their diameter

00212 equal to or smaller than an outer diameter of the plug

00213 kerstiftes, the contact system here over two,

00214 three turns can extend approximately. By a

00215 corresponding geometric design of the coil spring

00216 and the length of the connector pin is ensured

00217 that when a

00218 insert the connector pin so far into the helix

00219 which is inserted so that the front end in the

00220 with the narrower turns, the contact

00221 turns, comes into contact. The coil spring is wider

00222 also preferably radially evasible in the connector receptacle

00223 me arranged. 00224

00225 Another object of the invention relates to a

00226 embodiment in which the coil spring on a

00227 axially displaceable contact piece in the receiving chamber

00228 acts in the form of a contact socket. Is essential

00229 the special design of the contact piece. In

00230 in this context, the invention proposes that the

00231 contact socket a receiving opening for the plug pin

00232. The plug pin is therefore not only

00233 flat on the contact socket in the contact state, otherwise

00234 is partially retracted into the contact socket.

00235 Furthermore, it is preferred that the receiving opening

00236 tion has an insertion funnel. Deviations in

00237 the axial alignment of the contact socket and the plug

00238 kerstiftes during an insertion process can thus advantageously

00239 be compensated for. Another special pre

00240 part is also with regard to the insertion funnel

00241 given that when pulling out the connector

00242 pin from the contact socket a tear-off spark only in

00243 area of the receiving funnel arises, this receiving

00244 funnel on the other hand not for the electrical

00245 contact is responsible. Any signs of wear 00246 openings on the insertion funnel affect the

00247 electrical effectiveness of the contact is not. In wide

00248 rer embodiment it is provided that the receiving opening

00249 voltage of the contact socket in a continuation hole in

00250 of the contact socket passes over which continuation bore

00251 has a smaller diameter than the connector

00252 pen. This continuation hole is suitable

00253 designed as a blind bore. Overall, this also leads

00254 in a preferred manner to an embodiment that a

00255 contact surface for face contact with the plug

00256 kerstift in the contact socket as a circular •

00257 surface is formed. This contact area is in

00258 another preferred embodiment spherically curved

00259 designed. The opening also has

00260 prefers a slightly larger diameter than it

00261 an outer diameter of an associated connector pin

00262 is. This is a slight misalignment of the

00263 connector pin tolerable even in contact condition. On

00264 the electrical contact changes in terms of

00265 circular, preferably spherically curved

00266 contact surface nothing. 00267

00268 The invention is further based on the

00269 attached drawing, however, only execution

00270 illustrates examples explained. Here shows: 00271

00272 Fig. 1 shows a basic representation of a

00273 coil spring inserted connector pin with

00274 electrical contact; 00275

00276 FIG. 2 the helical spring according to FIG. 1 in a single representation

00277 lung; 00278

00279 FIG. 3 the helical spring according to FIG. 2 taken in

00280 a receiving chamber; 00281 Fig. 4 representation of an insertion process of the plug

00282 pin in the coil spring;

00283

5 shows a representation according to FIG. 3, with alternati¬

00285 ven contact element;

00286

00287 Fig. 6 shows an alternative embodiment of the object

00288 of that of FIG. 3;

00289

00290 Fig. 7 shows a further alternative connector system;

00291

8 the plug system according to FIG. 7 when plugged in

00293 of the connector pin;

00294

00295 FIG. 9 shows the plug system according to FIG. 7 or FIG. 8

00296 inserted plug pin;

00297

00298 Fig. 10 is a detailed representation of the processes at

00299 to 13 inserting or removing a plug pin

00300 tes the arrangement of FIG. 7;

00301

14 shows a further cross-sectional illustration of a

00303 receiving chamber with Kontakt¬ located therein

00304 socket;

00305

00306 FIG. 15 is a side view, partly in cross section,

00307 a variant of the contact socket according to the

00308 arrangement of FIG. 14, with subsequent

00309 locking part and strand connection part;

00310

00311 Fig. 16 is a partial cross-sectional view

00312 of the contact area of the contact socket with

00313 inserted connector pin;

00314 00315 FIG. 17 shows an illustration according to FIG. 15 of an alternative

00316 ven embodiment; 00317

00318 Fig. 18 is a partial cross-sectional view

00319 of the contact area of the alternative

00320 form of FIG. 17, in a representation

00321 according to Fig. 16. 00322

00323 is shown and described, initially with reference to

00324 Fig. 1, an electrical connector 1, which

00325 a coil spring 2 and a connector pin 3 there.

00326 The coil spring 2 and the plug pin 3 are electrical

00327 trically conductive. By inserting the plug pin 3

00328 in the coil spring 2 can an electrical circuit 4th

00329 can be closed. 00330

00331 It is essential that the helical spring 2, as well

00332, in particular from FIG. 2, predominantly turns 5

00333 of an equal (inner) main diameter ie.

00334 The helical spring 2 also has contact windings.

00335 gen 6, the one compared to the main diameter

00336 have smaller contact blades dk. The main diameter

00337 ser that is a little larger than an outside diameter

00338 ser d of the connector pin 3, while a contact diameter

00339 ser dk is smaller than the diameter d of the connector

00340 pin 3. 00341

From Fig. 3 it can be seen that the helical spring 2 in

00343 a receiving chamber 7 is arranged. The coil spring

00344 2 is pre-tensioned into the retainer 7

00345 sets so that they on the front end face 8 or

00346 rear end face 9 of the receiving chamber 7 with preload

00347 voltage is present. The concern on the rear face

00348 9 can by means of or on a contact element 00349 10 be given, which is described in more detail below

00350 is.

00351

It is also important that the helical spring 2 in this way

00353 is inserted into the receiving chamber 7 that too

00354 a side wall 11 of the receiving chamber 7 a radial

00355 free state a results.

00356

00357 The receiving chamber 7 can, for example, in plastic injection molding

00358 drive - if necessary in two parts to insert the

00359 coil spring 2 - be made. Has on the outside

00360 the receiving chamber 7, a front end of the Wendelfe¬

00361 assigned to FIG. 2, an insertion funnel 12 which is in a

00362 insertion opening 13 opens. The insertion opening 13 has

00363 about a diameter that is a major diameter ie

00364 corresponds to the turns 5.

00365

4 is the process when inserting a plug

00367 pin in the coil spring and the resulting Kon¬

00368 clock state clarified in detail.

00369

00370 From the illustration above it can be seen at first

00371 that the plug pin 3 so far into the coil spring

00372 is that this is in any case in the area of their

00373 compresses free end turns 5 '(somewhat). Because of

00374 of the geometry of the contact turns 6 is provided

00375 inserted connector pin 3 according to FIG. 4 a Verset¬

00376 tongue between the longitudinal axis a '' of the plug pin 3

00377 and the central axis a 'of the - unaffected - Wendelfe¬

00378 the one. Due to the given geometry, the kuppei¬

00379 shaped configuration of a tip of the connector pin

00380 3 and of course obliquely to the central axis a'verla¬

00381 ufenden- contact windings 6 still gives the essential

Liche effect 00382 that the coil spring 2 bend

00383 is looking for. However, this deflection can only be minimal 00384 extent occur, which means that the central axis a '

00385 the coil spring 2 is shifted and thereby

00386 a variety of main windings 5, which overlap

00387 to the connector pin 3, on one side, in the

00388 provided embodiment in its lower area

00389 come to connector pin 3. Overall are

00390 thus a large number of turns, both the contact

00391 turns 6 as well as main turns 5, in electrical

00392 Contact the connector pin 3. It is a very good one

00393 contacting ensured. 00394

00395 A conductive connection between the coil spring 2 and

00396 a voltage source 14 (see FIG. 1) of the circuit

00397 4 can in detail by the already mentioned

00398 contact element 10 (see FIG. 3) can be achieved. This

00399 contact element 10 has a plate-shaped contact

00400 surface 14 through a radial opening 15 in the

00401 receiving chamber 7 is inserted into this. she lies

00402 in front of the rear end wall 9 of the receiving chamber 7. Die

00403 Coil spring 2 is in - on the front - pressure system on

00404 the plate 14. A splayed foot 14 'of the

00405 contact element 10 can in a recess 16 of the

00406 receiving chamber 7 be inserted. 00407

00408 In the embodiment of FIG. 5 is alternatively one

00409 contact element 18 provided, the spread locking feet

00410 19, which is in corresponding recesses

Support 00411 of the inner wall of the receiving chamber 7. By

00412 the pretension of the helical spring 2 is such a secure

00413 te location of the contact element 18 given. In addition

00414 can still be limited by an end face

00415 chige stage 21 of the receiving chamber 7 may be provided.

00416 A contact is also connected to the contact element 18.

00417 p connection point 20, in the same way

00418 a strand 17 can be crimp-connected. The contact 00419 ment 18 is in its cross section to the

00420 adapted internal cross-section of the receiving chamber 7

00421 det, i.e. circular. 00422

00423 In one embodiment of the electrical connector

6 is the helical spring as a spiral spring

00425 22 trained. It tapers from a tallest

00426 diameter Dl at its beginning to a smallest diameter

00427 knife D2 at its end. The connector pin 3 is such

00428 inserted in the coil spring 22 that the larger

00429 diameter of the coil of the coil spring 22 not on the

00430 Pin 3, some of the smaller helix

00431 with a smaller diameter, however. 00432

00433 The electrical connector

00434 connection according to FIGS. 7 to 13 is initially in

00435 correspondingly from a connector pin 3 and

00436 a receiving chamber 7 with one located therein

00437 coil spring 2. However, the coil spring 2 springs in this

00438 ser embodiment from its own contact socket 23.

00439 This contact socket consists of a transverse

00440 cut larger end portion 24 against an end face

00441 25 under the pretension of the helical spring 2 in the

00442 takes chamber 7 abuts. At this end part 24

00443 a front, cross-section-thinner area

00444 lock in which a receiving opening 26 for the

00445 connector pin 3 is formed. The contact socket 23

However, 00446 is total, both the end part 24 and that

00447 front cross-sectional area, in which

00448 mer 7 added. The receiving opening 26 has front

00449 on an insertion funnel 27. In Fig. 7

00450 position shown, in which the end part 24

00451 of the end face 25, there is also a

00452 sentence v with respect to a front face 28 of the

00453 receiving chamber 7. 00454 The receiving opening 26 is connected via a conical

00455 tapered contact surface 29 a continuation

00456 tongue hole in the form of a blind hole 30 smaller

00457 diameter - compared to the diameter of the

00458 receiving opening 26 - on. The blind bore 30 can, for example.

00459 Pick up dirt particles. 00460

00461 In FIGS. 8 and 9, the movement process when entering

00462 plug connector 3 shown. First of all

00463 the connector pin 3 is inserted into the receiving opening 26

00464 and then lies on the end face of the contact surface 29 00465. The front end of the plug pin 3 can, for example, be rounded in a dome shape, as shown in 00466. 00467

00468 Furthermore, such pressure on the connector pin 3

00469 exercised that the coil spring 2 is compressed

00470 and the contact socket 23 in the receiving chamber 7

00471 is moved towards a rear end. 00472

00473 As can further be seen from FIGS. 7 and 8, can

00474 a continuation of the end part 24

00475 connect tapered contact part 30 ',

00476 which with a strand 17 in a conventional manner

00477 is connected. The helical spring 2 is over the contact

00478 part 30 'pushed. It is not necessary

00479 that an electrical connection between the contact

00480 part and the helical spring 2 is given because the helical spring

00481 of FIG. 2 in this embodiment only a cushioning

00482 has function. 00483

00484 The plug pin 3 and the contact socket 23 are off

00485 a tool suitable for electrical contact

00486 fabric made, for example, of a bronze alloy. 00487 10 to 13 is the insertion process and

00489 increases the possible displacements of the connector pin

00490 is shown in detail. 00491

00492 First of all, a case is shown in FIG.

00493 does not include a longitudinal axis al of the contact socket 23

00494 a longitudinal axis a2 of the plug pin 3 is aligned. On-

00495 due to the introductory funnel 27 results, however

00496 an introductory effect so that the connector pin 3rd

00497 according to FIG. 11 towards the center, i. H. to the axis al

00498 receptacle 23 out, is deflected. This can

00499 still an angular offset between the axes al and

00500 a2 exist. This is due to the fact that a

00501 knife the receiving opening 26 a little larger

00502 is designed as an outer diameter of the connector pin

00503 tes 3. In Fig. 13 is a complete alignment of the

00504 axes al and a2 shown. It is essential that the

00505 Place of origin of the tear-off spark (insertion funnel

00506 27) separated from the contact surface 29, i.e. axially di

00507 is punched. With a conical shape of the

00508 contact surface 29 is created in combination with a

00509 rounded tip of the connector pin 3 a linear

00510 contact zone. Overall, this type of electrical

00511 see connector a combination of a front

00512 surface contact and a circumferential contact

00513 (the latter over the side walls of the receiving opening

00514 26). The plug-in length of the connector is exposed

00515 an axial length of the receiving opening 26 and one

00516 travel of the coil spring 2 together. The travel is

00517 determining for a so-called contact coverage. The

00518 dimensional relationships allow a

00519 certain radial play of the connector pin 3 in the

00520 receiving opening .26. The resulting friction

00521 of the plug tip on the contact surface has a positive 00522 tiv with regard to self-cleaning of the contact

00523 surfaces. 00524

00525 In the embodiment of FIG. 14, the receiving

00526 chamber 7 a contact socket 23 insertion side

00527 inserted which has a receiving opening 26 for the

00528 pin 3 has. The receiving opening 26

00529 connects to an insertion funnel 27, which

00530 guidance example of FIG. 14 by a bending edge

00531 or flanged edge is formed, which results here.

00532 In detail, the contact socket 23 is

00533 of FIG. 14 geometrically from two diameters

00534 different tubular, integrally molded

00535 elements assembled, the small-diameter

00536 re part is turned inside so that the

00537 addressed bending or flanging results. All in all

00538 is the contact socket 23, however, in stamping / bending technology

00539 created and formed in one piece. In another axial

00540 insertion direction, the contact socket has an integral

00541 molded stop element 31, which is a central

00542 has passage opening 32. This is again axial

00543 spaced from a further axial through opening

00544 33 in the larger section of the contact socket

00545 23. A bottom region 33 'formed by flanging

00546 of the contact socket 23 is used for a coil spring 34

00547 edition. The helical spring 34 is supported on the other side

00548 from a locking part 35, which by means of radially evading

00549 barbed locking feet 36 are in radial

00550 recesses 37 of the receiving chamber 7 supports. A

00551 Axial movement of the locking part 35 in the insertion direction of the

00552 pin 3 is not possible. To the

00553 locking part 35 integrally closes a crimp holder 38

00554 for attachment with a strand 39. 00555 00556 In accordance essentially with the execution

00557 forms FIGS. 7 to 9 has the stop element 31st

00558 an annular conical or spherically curved

00559 surface, for face contact with the plug

00560 pin 3.

00561

00562 In this embodiment as well as those below

00563 described embodiments of Figs. 15-18

00564 particularly essential that it is due to the locking part

00565 35 not during the plugging process to an axial

00566 movement of the strand 39 can come. An assembly effort

00567 terung arises from the fact that no spring over the Lit¬

00568 zenanschluß 38 must be threaded.

00569

00570 The helical spring 34 is of course electrical

00571 conductive.

00572

00573 In the embodiment of Fig. 15 is the locking part

00574 35 'integrally molded by radial expansion.

00575 The contact socket 23 is also integral with the latching part

00576 35 'via a tube connecting part 40.

00577 Otherwise Fig. 15 shows that the locking part

00578 35 ', as already explained above, the crimping

00579 p connection 38 connects in direct connection.

00580 It is also essential that the contact socket 23

00581 is not axially movable in this embodiment.

00582

00583 The cross-sectional view of FIG. 16 is in detail

00584 NEN the favorable electrical contact in the An¬

00585 impact element due to the spherically curved surface

00586.

00587

00588 The embodiment of FIGS. 17 and 18 corresponds in

00589 essential to the embodiment of FIGS. 15 and 16,

00590 with the exception that the contact socket 23 no longer 00591 has a retracted part that the spherically

00592 curved stop surface, but the tube

00593 binding part 40 towards the contact socket 23

00594 tapered and in the area of the smallest diameter

00595 sers in the spherically curved surface to the end face

00596 chigen contact with the pin 3 passes. in this connection

00597 remains a through opening 32. The cross-sectional

00598 representation of FIG. 18 can be seen that also

00599 here essentially the same contact conditions

00600 result, as in the previously described embodiments

00601 men of FIGS. 14 to 16. 00602

00603 All disclosed features are essential to the invention. In

00604 the disclosure of the application is hereby also

00605 disclosure content of the associated / attached priori

00606 documents (copy of the pre-registration)

00607 was included, also for the purpose of characteristics of this

00608 documents in claims of the present application

00609 record.

Claims

00610 claims

00611

00612 1. Electrical plug connection (1) with a plug opening

00613 (7) and a connector pin (3), in particular

00614 a round in cross-section pin (3), the

00615 connector receptacle (7) has a receiving chamber and in

00616 of the receiving chamber compresses in the axial direction

00617 bare coil spring with individual turns (5, 6)

00618 (2) is arranged, the turns (5) predominantly

00619 have the same main diameter (ie), thereby

00620 characterized that the main diameter (ie) larger

00621 is an outer diameter (d) of the plug pin (3)

00622 and that one or a few contact turns (6) one

00623 compared to the main diameter (ie) smaller contact

00624 diameter (dk), which is also smaller than

00625 the outer diameter (d) of the connector pin (3).

00626

00627 2. Electrical connector (1) according to claim 1 or

00628 in particular according to claim 1, characterized in

00629 that according to an interaction between a Kon¬

00630 clock winding (6) and a front area of the plug

00631 pin (3) the turns (5) in a front area

00632 the coil spring (2) in a contact system on the Stek¬

00633 kerstift (3) come.

00634

00635 3. Electrical connector (1) after one or

00636 several of the preceding claims or in particular

00637 afterwards, characterized in that the contact turn

00638 (6) in the direction of insertion of the connector pin (3) into one

00639 rear area of the coil spring (3) offset

00640 net.

00641

00642 4. Electrical connector (1) after one or

00643 several of the preceding claims or in particular 00644 after that, characterized in that a front end

00645 of the plug pin (3) is conical.

00646

00647 5. Electrical connector (1) after one or

00648 several of the preceding claims or in particular

00649 thereafter, characterized in that the helical spring (2)

00650 with prestress in the receiving chamber (7).

00651

00652 6. Electrical connector (1) after one or

00653 several of the preceding claims or in particular

00654 after that, characterized in that the helical spring (2)

00655 only rests in the receiving chamber (7).

00656

00657 7. Electrical connector (1) after one or

00658 several of the preceding claims or in particular

00659 thereafter, characterized in that a wall of the

00660 receiving chamber (7) with a laterally to the Wendelfe¬

00661 the (2) arranged distance (a) is arranged, the

00662 at least about a diameter of the spring wire

00663 which corresponds to the helical spring (2).

00664

00665 8. Electrical connector (1) after one or

00666 several of the preceding claims or in particular

00667 after that, characterized in that a rear end

00668 of the coil spring (2) with a contact element (10)

00669 is bound, which is carried out by the plug on

00670 took chamber (7) in the radial direction an electrical

00671 connection enabled.

00672

00673 9. Electrical plug connection (1) with a plug opening

00674 acquisition (7) and a connector pin (3), in particular

00675 a round in cross-section pin (3), the

00676 connector receptacle (7) has a receiving chamber and in

00677 the receiving chamber compresses in the axial direction

00678 bare coil spring with individual turns (5) 00679 (2), characterized in that the 00680 coil spring is a spiral spring (22) which has a number of coils 00681, the diameter of which is greater than an 00682 outer diameter of the plug pin (3), and which has 00683 further coils, which have a smaller diameter than the 00684 outer diameter of the plug pin (3) 00685 00686 00687 10. Electrical plug connection (1) according to Claim 9 00688 or in particular according thereto, characterized in that 00689 the spiral spring (22) can be radially deflected in the plug 00690 recording (7) is arranged. 00691 00692 11. Electrical plug connection (1) with a plug 00693 receptacle (7) and a plug pin (3), in particular 00694 a plug pin (3) which is round in cross section, the 00695 plug receptacle (7) having a receptacle and in 00696 the Receiving chamber a helical spring (2) 00698 which is compressible in the axial direction and has individual turns is arranged, the helical spring acting on a contact socket 00699 (23), characterized in that the 00700 contact socket (23) has a receiving opening (26). for the 00701 connector pin (3). 00702 00703 12. Electrical plug connection (1) according to claim 11 00704 or in particular according thereto, characterized in that 00705 the receiving opening (26) has an insertion funnel (27) 00706. 00707 00708 13. Electrical connector (1) according to one of claims 00 or 9 or 12 or in particular according thereto, characterized 00710 in that the receiving opening (26) merges into a 00711 continuation bore (30) which has a smaller diameter 00712 than the connector pin (3). 00713 00714 14. Electrical connector (1) according to one of the

00715 Claims 11 to 13 or in particular according thereto, thereby

00716 characterized in that the continuation bore is a pocket

00717 bore (30). 00718

00719 15. Electrical plug connection (1) according to one of the

00720 sayings 11 to 14 or especially afterwards, thereby

00721 characterized in that a contact surface (29) to the front

00722 flat contact with the connector pin (3) in the con-

00723 clock bushing (23) designed as an annular surface

00724 is. 00725

00726 16. Electrical plug connection (1) according to one of the

00727 claims 11 to 15 or in particular afterwards, thereby

00728 characterized in that the contact surface (20) is spherical

00729 is curved. 00730

00731 17. Electrical plug connection (1) with a plug

00732 record (7) and a connector pin (3), in particular

00733 a round in cross-section pin (3), the

00734 connector receptacle (7) has a receiving chamber and in

00735 a receptacle (23) is arranged in the receiving chamber

00736, characterized in that the contact socket (23)

00737 a receiving opening (26) for the plug pin (3)

00738. 00739

00740 18. Electrical connector (1) after one or

00741 several of the preceding claims or in particular

00742 after, characterized in that the receiving opening

00743 (26) a formed by a bending or flanged edge

00744 ten insertion funnel (27). 00745

00746 19. Electrical connector (1) after one or

00747 several of the preceding claims or in particular

00748 after that, characterized in that the receiving opening 00749 (26) is completed by a stop element (31),

00750 whereby the suction plate (31) has a central passage

00751 opening (32). 00752

00753 20. Electrical connector (1) after one or

00754 several of the preceding claims or in particular

00755 after that, characterized in that the stop element

00756 (31) an annular conical or spherically

00757 forms curved surface for face contact

00758 with the preferably rounded end

00759 connector pin (3) 00760

00761 21. Electrical connector (1) after one or

00762 several of the preceding claims or in particular

00763 thereafter, with an axial extension to the contact

00764 socket (23) a contact part is connected, for example in

00765 Form of a crimp connection (38) for electrical connection

00766 fertilizer with a strand (39), characterized in that

00767 between the contact socket (23) and the contact part

00768 (38) a locking part (35) is formed for axial

00769 latching in the receiving chamber (7). 00770

00771 22. Electrical connector (1) after one or

00772 several of the preceding claims or in particular

00773 after that, characterized in that the latching part (35)

00774 via a helical spring (34) with the contact socket (23)

00775 is electrically connected. 00776

00777 23. Electrical connector (1) after one or

00778 several of the preceding claims or in particular

00779 thereafter, characterized in that the latching part (35)

00780 over barb-like support feet (36) in the receiving chamber

00781 mer (7) is set. 00782 00783 24. Electrical plug connection (1) according to one or 00784 several of the preceding claims or in particular 00785 thereafter, characterized in that the latching part (35) 00786 has a 00787 circumferential rib (35 ') which is larger in cross-section than the receiving chamber, for axially fixing the 00788 latching part (35) in an associated circumferential recess 00789 of the receiving chamber (7). 00790 00791 25. Electrical plug connection (1) according to one or 00792 several of the preceding claims or in particular 00793 thereafter, characterized in that the contact socket 00794 (23) is formed by indenting or flanging a Rohrele¬ 00795 mentes. 00796 00797 26. Electrical plug connection (1) according to one or 00798 several of the preceding claims or in particular 00799 thereafter, characterized in that a 00801 funnel-shaped connecting part (pipe part 00802 (40)) connects to the central 00800 through-opening (32) of the stop element . 00803 00804 00805 00806