EP1275173A1

EP1275173A1 - Plug-in connector with a bushing

Info

Publication number: EP1275173A1
Application number: EP01936092A
Authority: EP
Inventors: Mario Bartholomä; Achim Hoch; Herbert Bohusch
Original assignee: Anton Hummel Verwaltungs GmbH
Current assignee: Anton Hummel Verwaltungs GmbH
Priority date: 2000-04-15
Filing date: 2001-03-17
Publication date: 2003-01-15
Anticipated expiration: 2021-03-17
Also published as: US20040038596A1; EP1275173B1; BR0110070A; CN1249859C; AU6210301A; BRPI0110070B1; EA003808B1; DE50100805D1; ES2208601T3; WO2001080372A1; CN1423849A; DE20007001U1; ATE252280T1; US6780068B2; EA200201102A1

Abstract

A plug-in connector has an insulating body which holds electrical contacts, for example contact pins or contact tubes, in bores which extend in the axial direction. On its outside, the insulating body has a groove which opens outwardly and which intersects the holes or bores for the contacts over part of their radial extension. A retaining ring fits into the groove and in the working position, simultaneously engages in groove-like recesses provided on the contacts, thereby fixing the contacts in an axial direction. The retaining ring can also support at least one retaining tongue protruding preferably radially inwardly in the plane of the retaining ring. The retaining tongue extends into the area of a further bore for a middle contact through a channel or opening in the insulating body and in the working position, engages in the recess thereof so that this middle contact is also axially fixed.

Description

Plug with a sleeve

The invention relates to a plug with a sleeve and with an insulating body arranged in the use position in the sleeve and with elongated, pin-like contacts - contact pins or contact sockets - the holes or bores of the insulating body m in the use position are fixed by means of projections, which m transversely to the longitudinal direction of the contacts on these located groove-like depressions, the holes or bores with the elongated contacts on a concentric to the center of the sleeve or the insulating body and thus m the same distance from the inside of the sleeve or the surface of the insulating body, a further contact inside the imaginary cylinder is arranged parallel to the other contacts within a hole or bore.

Such electrical plugs are known and have proven themselves because the contacts are fixed and held in the axial direction when the plug is plugged together with or released from a counterpart, which is often associated with overcoming clamping forces through which the contacts m be subjected to a force in their longitudinal direction.

So far, the mutual assignment of the projections to the depressions on the plug contacts has been complex. In many cases, the insulating body is designed in several parts in order to be able to fix the contacts with their depressions to corresponding projections within the insulating body when the latter is disassembled. This means that it must then be put together, so that both the manufacture and the assembly are considered to be complex.

Another known solution provides protrusions made in one piece with the insulating body, which when inserting the pin-like First dodge contacts and then snap into the recesses on the contacts. This requires a correspondingly elastic material and, moreover, complex shapes are required to produce such an insulating body.

The invention has for its object to provide an electrical connector of the type mentioned, m is simple to manufacture and with a one-piece design of the insulating body, the determination of the contacts, be it contact pins or contact sockets, by means of depressions and projections engaging therein in a simple manner allows.

To achieve this object, the connector mentioned at the outset is characterized in that the insulating body has at least one circumferential and outwardly open groove on its outside, which has the perforations or bores for the contacts over a part of their radial extent facing the outside of the insulating body Side cuts or penetrates, and that the groove on the insulating body is arranged at the level at which the depressions of the contacts are in the position of use, that a locking or holding ring made of insulating material and extending over at least part of the entire circumference of the insulating body is provided is the m fits the groove of the insulating body and at the same time engages in the position of use as a projection m the recesses of the contacts, and that the retaining ring carries at least one inwardly projecting retaining tongue, which in the position of use m a channel or opening extending inwards from the groove h engages and protrudes into the recess of the further contact located inside the imaginary cylinder and the hole or bore receiving it.

In this way, a one-piece and one-piece insulating body can be provided, with which corresponding holes or Bores for inserting the pin-like contacts are arranged, the projections fixing these contacts in the axial direction being formed by a common retaining ring which runs around a groove of the insulating body which intersects or slightly penetrates the holes or bores of the contacts, so that the m of these Groove located retaining ring m can engage the depressions of the contacts located at the same height. A multipart structure of the insulating body or complex molded projections on the insulating body for axially fixing the contacts are avoided.

For simple assembly, it is advantageous if the retaining ring extends only over a pitch circle and its two free ends can be moved apart at least so far that their distance m this deformed state corresponds to the diameter of the insulating body in the region of the bottom of the groove. The retaining ring is thus interrupted and has two free ends and can be bent open in such a way that, despite its function surrounding the insulating body m of the groove m in the position of use, it can first be plugged on from the side. This retaining ring, which can be bent open due to its elasticity, then snaps into the groove in the position of use in the groove due to the elasticity and the resulting restoring force and is thereby already fixed. At the same time, its elasticity also allows it to dodge something again when the contacts are inserted into their perforations, which the retaining ring engages somewhat.

It is expedient if the groove-like depressions running around the elongated contacts or contact pins, in particular on their circumference, are each delimited by a collar or the like projecting radially from the contact area and this collar has a bevel or a cone on the side facing away from the depression, who when inserting the Contact m runs its hole against the retaining ring and deflects it radially outwards until the recess of the contact m matches the groove of the insulating body, so that the retaining ring then automatically engages the recess of the contact, thus axially defining the contact. It follows from this that the actual contact area of the contact has a smaller cross section than this collar and the part of the contact which extends to the other side.

One of the contacts arranged on an imaginary cylinder can be designed as a ground contact and be released from the retaining ring, and this ground contact can engage the groove on the contact with the groove of the insulating body and engage the depression in the position of use m and, in particular, engage the contact latching with spring arms conductive retaining spring or the like can be fixed in the axial direction. This arrangement is advantageous in several respects because such a connector generally requires a ground contact. The presence of this grounding contact is exploited so that the retaining ring only has to extend over part of the circumference of the insulating body, that is to say, it is correspondingly little to bend open during assembly, which reduces or avoids the risk of this retaining ring breaking during its assembly. At the same time, there is an expedient solution for fastening the grounding contact, in which the presence of the groove running around the insulating body can be appropriately exploited. The holder of the ground contact, namely a retaining spring, can also form the ground contact connection.

Overall, there is an arrangement in which not only simple manufacture, but also a very simple and yet effective assembly is made possible by first inserting the retaining ring on the insulating body whose groove and then the Contacts in the axial direction m the holes or bores are inserted so that their actual contact areas are in the direction of insertion. They then displace the retaining ring with their conical area or protrusion, which then, however, automatically re-engages their recess and thus already brings about the fastening. Since the retaining ring is resilient, it can deflect until the depression of the contact m reaches this area during axial insertion and the retaining ring can then spring back. Due to the elasticity of the retaining ring, de contact pins are already secured after insertion, this also applies to an internal contact pin which engages with a corresponding conical projection or area on the tongue of the retaining ring pointing radially inward and can move it radially outward, which is also possible due to the elasticity of the retaining ring.

The free ends of the retaining ring are arranged in the position of use on both sides of the grounding contact at a distance from this. The inwardly projecting retaining tongue, which penetrates a corresponding opening or channel in the insulating body, ensures the exact and correct positioning of the retaining ring.

In the final position of use, the retaining ring is secured against unintentional bending by the sleeve accommodating the insulating body, which generally forms the connector housing.

The retaining spring for the ground contact can consist of metal or electrically conductive plastic and in particular have a bead or protrusion on the outside, which in the position of use the surface of the insulating body at least by the play of the insulating body relative to the sleeve and / or the play of the retaining spring in the groove of the insulating body protrudes. Electrically conductive plastic can also be such a plastic, which is coated on the outside with metal or vapor-coated. Through the bead or projection, the retaining spring also protrudes slightly in the position of use over the surface of the insulating body, so that there is an electrical clamping contact for the grounding contact, as a rule, with the metallic sleeve, so that further measures for connecting the grounding contact are not required , Thus, the groove arranged on the insulating body proves to be advantageous because, in addition to the retaining ring, it can also easily accommodate the retaining spring for the ground contact and keep it in contact with the outer sleeve.

The cross-section of the retaining ring can approximately fill the cross-section of the groove in the position of use or at least the radial extension or width of the retaining ring can correspond to that of the groove and the sleeve receiving the insulating body can accordingly determine the position of use of the retaining ring. In this way, the outer circumferential side of the retaining ring practically forms a continuation of the outer surface or circumferential surface of the insulating body, ie the retaining ring can be approximately flush with the surface of the insulating body in the position of use.

The already mentioned, radially inwardly projecting retaining tongue of the retaining ring can have a concave shape on its end face and can thereby be at least partially adapted to the peripheral shape of the contact to be held by it at the bottom of its depression. The end face of the retaining tongue can thus have a concave curvature with the radius of curvature which corresponds to the radius of the contact within its depression, so that there is the largest possible contact surface between the retaining tongue and this contact and the contact is partially encompassed by this retaining tongue. The area of the retaining tongue, which engages the recess of the contact and ensures the axial fixing, is correspondingly large. The retaining ring can wrap more than 180 ° of the insulating body within the groove, which preferably surrounds the entire circumference thereof. Since the retaining ring does not have to run over the entire circumference, the groove does not necessarily have to run continuously, but this is expedient and simpler for production. Wrapping through more than 180 ° causes the retaining ring to allow the aforementioned automatic fixing to the insulating body before the outer sleeve encloses the arrangement and prevents and blocks the retaining ring from escaping from the groove of the insulating body. But it would also be conceivable to assemble the retaining ring from sections which are clamped in the groove and are finally fixed by the sleeve.

The free ends of the one-piece retaining ring can be bevelled against one another in such a way that they can be pushed on or

To facilitate insertion into the groove of the insulating body

Form insertion funnel. This in turn makes assembly easier.

The sleeve enclosing the insulating body can consist of metal and form the housing of the plug, if necessary carry a thread on the outside. As a result, this sleeve receives a corresponding additional function in a manner known per se, by fixing the insulating body and the retaining ring and thus also the contacts on the inside and, on the other hand, interacting with the ground contact and, as a mounting part, a housing or a grip part or the like can be screwed in ,

The sleeve can have positioning projections or recesses on its inside and the insulating body can have deformations that match it, which define the preselected rotational position when the insulating body is inserted axially. As a result, the contact pins then receive their precise positioning relative to the sleeve. In the interior of the sleeve, an axial cut that is effective in the axial direction can be provided, behind which, seen in the insertion direction, at least one radially resilient or compressible latching tongue protruding from the insulating body in the radial direction fits and can be pivoted resiliently. If the insulating body is inserted axially into the sleeve, the axial position is automatically determined by such a latching tongue and no further measures for the axial fixing of the insulating body within the sleeve are necessary, although they would also be possible. In any case, the axial position of the insulating body within the sleeve is also predetermined and fixed.

The latching tongue, which is elastically flexible or deformable in the radial direction, can be pivotable about a pivot axis running parallel to the central axis of the insulating body or the plug and can extend in the circumferential direction of the insulating body. Locking tongues are often known which extend in the axial or insertion direction and can be pivoted about corresponding transverse axes. By arranging the latching tongue approximately in the circumferential direction, it can have a relatively large length and width and thus establish a large-area connection to the interior behind the sleeve cut of the sleeve.

The elastically deformable latching tongue can adjoin the groove with a side face and limit the groove, and the retaining ring or retaining spring can lock the elastically flexible latching tongue against axial deformation in the position of use. Since the latching tongue is flexible in the radial direction, a certain axial deformation cannot be completely ruled out with corresponding forces, but this is advantageously prevented by the retaining ring or retaining spring in the groove of the insulating body. This gives the retaining ring another one Function .

The latching tongue can have a latching projection on its outside, the radial extent of which is equal to or less than the deformation path of the latching tongue in the radial direction. This protrusion jumps behind the sleeve cutout when the sleeve is inserted and ensures the axial fixation.

It should also be mentioned that the width of the retaining ring, i.e. its radial dimension, is adapted to the radial distance of the outwardly facing surface of a contact or contact pin from the outside of the insulating body and that the width of the retaining ring is larger in the region of thin contact pins or contact sockets than in the area of thicker contact pins or contact sockets. The width of the retaining ring can therefore vary in its circumference and can be adapted to how far the respective contact is located on the outer surface of the insulating body due to its own dimensions.

Overall, there is an electrical connector, with which a one-piece insulating body can accommodate the large number of contact pins and this axial direction is fixed by a common retaining ring, although at least one of the contacts is arranged within an imaginary cylinder. The basic shape of the insulating body is simple because no protrusions integrally formed on it are required to fix the contacts. The individual parts used are easy to manufacture and the entire assembly is also simple and quick to carry out and yet effective and ensures an accurate position of the individual contacts within the connector housing and relative to each other.

Below are exemplary embodiments of the invention based on the Drawing described in more detail. It shows m partly schematic representation:

FIG. 1 shows a perspective side view of the individual parts of a plug according to the invention even before they are assembled and assembled, that is to say in an "exploded view",

2 shows a representation corresponding to that of FIG

Joining the contacts, which are designed as pins in this case, to the insulating body before it is inserted, the sleeve serving as the housing,

3 shows a representation corresponding to FIGS. 1 and 2 after the final assembly of the plug, that is to say after the introduction of the insulating body m provided with the contacts, the sleeve,

4 shows a perspective top view of the insulating body provided with the contacts designed as pins, without the sleeve forming the plug housing,

5 shows a modified embodiment corresponding to FIG. 4, in which the insulating body for receiving contacts designed as sockets is modified compared to FIG. 4, but for fixing the contacts in the same way as in the embodiment example according to FIGS. 1 to 4 is designed

Fig. 6 shows a top view of the insulating body shown in perspective,

Fig. 7 shows a longitudinal section of the insulating body with it fixed contacts designed as pins according to line AA m Fig. 6,

8 shows a cross section of the insulating body equipped with contacts along the section line B-B in FIG. 7, which runs through the retaining ring which defines the contacts in the axial direction,

9 shows a cross section corresponding to FIG. 8 after inserting the insulating body provided with the contacts, the sleeve and

10 a cross section corresponding to FIG. 9 through a

Connector with eight contacts, with four contacts having a smaller cross section and diameter than the rest

9 and have the contacts according to FIG. 9 and the retaining ring accordingly has different areas with regard to its width.

In the exemplary embodiments of an electrical connector 1 described below, their functionally identical parts have the same reference numbers even with a somewhat modified design.

The connector 1 shown in FIG. 3 in its final state, FIG. 1 and 2 m of individual parts has a sleeve 2 forming its housing and an insulating body 3 arranged and fixed in the position of use m of this sleeve 2, as well as elongated, pin-like contacts 4, which according to Fιg.1 to 4 and 6 to 10 contact pins and according to Fig.5 can be contact sockets, in which the mating connector thus has pins.

At these contacts 4 before or after assembly, according to Fig. 1 to 3 cables or strands 5 connected before assembly, for example soldered.

The insulating body 3 contains holes or bores 6, with which the contacts 4, as will be described, are fixed by means of projections, which engage in groove-like depressions 7 located transversely to the longitudinal direction of the contacts 4, the holes or bores 6 with the elongated ones or pin-like contacts 4 according to FIGS. 4 and 5 or also according to FIGS. 9 and 10, for example on a cylinder intended concentrically to the center of the sleeve 2 or the insulating body 3 and thus m the same distance from the inside of the sleeve 2 or the outer or surface 3a of the Insulating body 3 are. It can also be seen from all of the exemplary embodiments that a further contact 41 is arranged inside the imaginary cylinder parallel to the other contacts 4 within a perforation or bore 6.

For the axial fixation of the contacts 4 and 41 within the insulating body 3, the latter has a groove 8 which runs on its outside 3a and is open to the outside and which covers the holes or bores 6 for the contacts 4 over part of their radial extent on the outside 3a thereof of the insulating body 3 facing side cuts. This can be seen, for example, in FIG. 1 and indirectly in FIGS. 7 through 10.

This groove 8 is arranged on the insulating body 3 m of the height or axial distance from its end faces, which are the recesses 7 of the contacts 4 in the position of use, so that the groove 8 after the insertion of the contacts 4 m practically their position of use groove-like depressions 4 continues.

The connector 1 also includes an insulating material existing, at least over a part of the entire circumference of the insulating body 3 locking or retaining ring 9, which m fits the groove 8 of the insulating body 3 and the position of use according to FIGS. 7 to 10 simultaneously engages the recesses 7 of the contacts 4 as the projection which m defines their position of use axially.

So that this retaining ring 9 can fix not only the contacts 4 arranged on the imaginary cylinder, but also the inside contact 41 m in the same way in the axial direction, the retaining ring 9 carries one in the exemplary embodiment - with several internal contacts, several could possibly also be provided - Radially inwardly projecting retaining tongue 10, which is integrally connected to it and the position of use engages a channel or opening 11 extending inwards from the groove 8 (see FIGS. 7 to 10) and until the recess 7 of the inside of the imaginary Cylinder located further contact 41 and the hole or bore 6 receiving this protrudes. Thus, the retaining ring 9 with the aid of this retaining tongue 10 can not only fix the contacts 4 located on a common cylinder, but also an intermediate contact 41 m in the axial direction, so that no locking projections attached to the insulating body 3 itself are required for such an axial fixing are or the insulating body 3 would have to be divided.

It can be seen in several figures, particularly clearly FIG. 1 and also m FIGS. 8 to 10, that the retaining ring 9 only extends over a pitch circle and that its two free ends 9a can thus be moved apart at least so far that their distance m deforms it State corresponds to the diameter of the insulating body 3 in the region of the bottom of the groove 8. This deformed or bent state of the retaining ring 9 is not shown, but is easily imaginable, for example, using FIG. 8. there it is favorable that the retaining tongue 10 is located practically m in the middle between the free ends 9a of the retaining ring 9 and also m in the same plane as the rest of the ring course, so that it is practically formed on the neutral zone when the retaining ring 9 is bent open.

The groove-like depressions 7 located on the contacts 4 and 41 run completely around their circumference in the exemplary embodiment, so that the rotational position of the contacts 4 and 41 can be arbitrary during their assembly. These recesses 7 are each delimited by a collar 12 which is radially opposite the contact region 4a, and this collar 12 has on the side facing away from the recess 7 a bevel or a cone 13 which 4 or 41 m counteracts its bore 6 when the respective contact is inserted the then already m the groove 8 located retaining ring 9 and deflects it radially outwards until the recess 7 of the contact 4 or 41 m coincides with the groove 8 of the insulating body 3, so that the retaining ring 9 then automatically m the recess 7 of the Contact 4 or 41 occurs. This results in a very simple assembly of the contacts 4 within the insulating body 3, to which the retaining ring 9 is first inserted, after which the contacts 4 can simply be inserted into their bores 6 in order to form an axial snap connection with the retaining ring 9.

In the exemplary embodiment, one of the contacts arranged on an imaginary cylinder is designed as a ground contact 411 and is left free by the retaining ring 9 according to FIGS. 7 to 10. This grounding contact 411 is provided with a groove 8 m which, in the exemplary embodiment and preferably encircling the entire circumference of the insulating body 3, engages the recess 7 on the grounding contact 411 in the position of use m and detects the grounding contact in particular with spring arms 15, and detects it with an electrically conductive retaining spring 14 m axially definable, whereby This retaining spring 14 thus fixes the grounding contact 411 m in the axial direction in an analogous manner, as does the retaining ring 9 for the other contacts 4 and 41, by making use of the fact that the circumferential groove 8 bores the bore 6 for the respective contact and thus also the grounding contact 411 cuts and the corresponding engagement m allows the recess 7 of this ground contact 411.

For example, with reference to Figures 8 to 10, it can be seen that the free ends 9a of the retaining ring 9 use position are arranged on both sides of the earth contact 411 at a distance from this, that is, the earth contact 411 is provided where the position of use is the distance between the two free ends 9a of the retaining ring 9 is located. Since the earth contact has its own attachment, this is favorable for the overall arrangement and assembly.

The retaining spring 14 for the grounding contact 411 is made of metal or electrically conductive plastic and, according to FIGS. 4, 5 and 8 to 10, has a bead or projection 16 on its outside which, in the position of use, projects beyond the surface of the insulating body 3, at least for the game of the insulating body 3 relative to the sleeve 2 and also the game of the retaining spring 14 m of the groove 8 of the insulating body 3. This projection 16 is so shaped and dimensioned that it m each case m mounting position under a certain pressure on the inside of the metal or existing electrically conductive material existing sleeve 2 and thus creates an electrical connection for grounding.

The retaining ring 9 fills the groove 8 at least with its width in the position of use, but can optionally also fill the groove 8 with its entire cross section and thereby be held securely in its position of use. Thus it closes with its outer circumference according to FIG. 7 flush with the outside or surface 3a of the insulating body 3, so that the sleeve 2 receiving the insulating body 3, which rests with its inside on the outside 3a of the insulating body 3m in the use position according to FIGS. 9 and 10, automatically defines the use position of the retaining ring 9. If the insulating body 3 with the contacts 4, 41 and 411 is inserted into the sleeve 2, all the parts serving to fix the contacts 4 are in turn automatically locked against unwanted opening.

In Fig.1 is indicated and m the figures 8 to 10 that the radially from the circumferential center of the retaining ring 9 m inwardly protruding plane of the retaining tongue 10 formed concave on its end face and thereby the peripheral shape of the further contact to be held by it 41 is adapted to the bottom of the recess 7. Due to its concave design, the retaining tongue 10 comprises the further contact 41 at the base of its recess 7 over a certain circumferential area, which results in a flat contact and a correspondingly large engagement area of the recess 7 and thus a good axial fixation.

The retaining ring 9 forms only part of a circular arm, but wraps around more than 180 ° of the insulating body 3 within the circumferential groove 8 on this in the exemplary embodiment in the exemplary embodiment, so that after insertion, the groove 8 and the resulting bending in the use position Because of the groove 8 also includes non-positively. This shape and configuration thus results in a relatively secure fastening of the contacts 4 and 41, so that, according to FIG. 2, the contacts 4 and 41 can first be connected to the insulating body 3 having the retaining ring 9, after which these are made of the insulating body 3 and contacts 4, 41 and 411 existing unit m inserted the sleeve 2 and thereby the assembly can be completed. The free ends 9a of the retaining ring 9 are chamfered towards one another in this way, in the exemplary embodiment with an approximately radial one Provide course that they form an insertion funnel to facilitate the pushing or pushing in the groove 8 of the insulating body 3.

The sleeve 2 enclosing the insulating body 3 m in the position of use expediently consists of metal, possibly of another relatively hard and solid, at least partially electrically conductive material and forms the housing of the plug 1. In the exemplary embodiment, it carries a thread 17 on its outside so that a Screwing in a corresponding counterpart is possible.

The sleeve 2 can have positioning projections or depressions (not shown in detail in the exemplary embodiment) and the insulating body 3 can have deformations 18 matching them, i.e. projections matching recesses or depressions matching the axial position of the insulating body 3, thereby defining its preselected rotational position later contacts 4, 41 and 411 receive a given orientation and positioning. Corresponding deformations 18 on the insulating body 3 are indicated in FIGS. 4 and 5.

In the interior of the sleeve, an area is also provided, which is arranged behind a cut in the axial direction, behind which, in the position of use, part of the insulating body 3 is arranged and secured against axial displacement. Seen in the insertion direction behind this notch, which is not shown in more detail, fits a radially resilient or compressible latching tongue 19 protruding from the insulating body 3 m in the radial direction, which can be pivoted resiliently and is clearly shown in FIGS. 1 and 2 and also in FIGS so that at the same time the position of the hip cutting within the sleeve 2 is also indicated and indicated. In Fig. 1 of this area of the hip cutting the m Inserted direction seen front limit 20 can be seen, behind which the sleeve 3 increases again axially inside, this area m axial direction corresponds to the axial width of the latching tongue 19, so that after inserting the insulating body 3, the sleeve 2 the something below explained latching tongue 19 is held in a form-fitting manner between this outer boundary 20 and an analog inner boundary m in the axial direction.

The locking tongue 19 which is elastically flexible or deformable in the radial direction can be pivoted in the exemplary embodiment about a pivot axis running parallel to the central axis of the insulating body 3 or the plug 1 due to elastic deformation of the material and extends according to FIG. 1 m circumferential direction of the insulating body 3 deformable locking tongue 19 with its side face 22 facing away from the lower end face 21 of the insulating body 3 to the groove 8 and also limits this groove 8 over the circumferential area over which this locking tongue 19 extends. This makes it possible for the retaining ring 9 or the retaining spring 14, in the exemplary embodiment according to FIGS. 4 and 5, both parts to a part to simultaneously lock the elastically flexible latching tongue 19 m in the use position against axial deformation, which would possibly be possible if the Insulating body 3 would be loaded, for example, via the contacts 4 with respect to the sleeve 2 m in the axial direction, which can occur, for example, when plug 1 is plugged together with a counterpart or when it is pulled apart. Since the latching tongue 19 is elastic for the latching, it could also be axially deflected somewhat in addition to its radial deformation under such axial loads, but this is prevented by the measures described. The retaining ring 9 and / or the retaining spring 14 thus have an additional function in the axial securing of the insulating body 3 with respect to the sleeve 2. The latching tongue 19 has on its outside a latching projection 23, the radial extent of which is equal to or smaller than the deformation path of the latching tongue 19 when it is pressed in in the radial direction, so that this latching projection 23 advances the interior of the envelope of the insulating body by pressing in the latching tongue 19m

3 can be moved to enable insertion of the sleeve 2, but then protrudes beyond the outer contour of the insulating body 3 in the position of use in order to effect the locking with the hermter-cut area behind the boundary 20 and thus the axial fixing.

When comparing FIGS. 9 and 10, it can also be seen that the width of the retaining ring 9, that is to say its radial dimension, is adapted to the radial distance of the outwardly facing surface of a contact 4, contact pin or contact socket, from the outside 3a of the insulating body 3 is, that is, the radial width of the retaining ring 9 can be larger in the area of thinner contact pins or contact sockets according to FIG. 10 than in the area of thicker contact pins or contact sockets. F g.9 shows an arrangement with a total of six contacts

4 of approximately the same diameter, while FIG. 10 shows an arrangement with a total of eight contacts, in which four have a smaller cross section than the others.

As already mentioned briefly, the above-described exemplary embodiments enable inexpensive manufacture of the individual parts and also simple assembly which, in brief, proceeds as follows:

First, the retaining ring 9 according to FIGS. 1 and 2 m snaps the groove 8 of the insulating body 3.

Then the contacts 4 and 41, contact pins or sockets, which may have been provided with cables 5 beforehand, with their later contacting ends in advance m introduced corresponding holes 6 of the insulating body 3. The retaining ring 9 is widened and displaced in the radial direction and then jumps into the groove-like depressions 7 of the contacts 4 when they are located in the same diameter plane as the groove 8.

The retaining spring 14 can then be inserted and snapped onto the ground contact 411 within the groove 8.

The insulating body 3 with the retaining ring 9, the retaining spring 14 and the contacts 4, 41 and 411 m is then inserted into the sleeve 2, which is designed as a metal housing, up to an internal stop. In this case, the locking projection 23 of the locking tongue 19 of the insulating body 3 jumps a cut provided for this purpose, which is delimited on the outside by an edge 20 and which can preferably encompass the locking projection 23 on both sides in the axial direction. As a result, the insulating body 3 m of the sleeve 2 is secured, as a result of which the retaining ring 9 and the retaining spring 14 are simultaneously secured and locked against a release movement, because the inner wall of the sleeve 2 on the outside 3a of the insulating body 3 and the retaining ring 9 flush therewith for contact is coming.

At the same time, the bead or projection 16, which initially projects beyond the diameter of the insulating body 3, lies against the inner wall of the sleeve 2 and leads to a reliable contacting of the grounding contact 411.

Disassembly is also easily possible by removing the insulating body 3 from the sleeve 2 again, the locking tongue 19 being deformed radially inward with the aid of a tool and then the insulating body 3 being pressed axially out of the sleeve 2. It is helpful that the latching tongue 9 is not provided with the latching projection 23 over its entire outer surface, so that in addition to the locking projection 23 em tool can be inserted between the inside of the sleeve 2 and the locking tongue 19.

The retaining ring 9 and the retaining spring 14 can then be removed from the groove 8, after which the contacts 4, 41 and 411 can in turn be pushed out or pulled out of the bores 6 in the axial direction.

The plug 1 has an electrical contacts 4, 41 and 411, for example contact pins or contact sockets, axially extending bores 6 holding insulating body 3. This has on its outside 3a an outwardly open groove 8, which the holes or bores 6 for the contacts 4th and 411 intersects part of their radial extent. In the groove 8 fits em retaining ring 9, the position of use engages simultaneously in the groove 4 provided on the contacts 4 groove-like recesses 7 and thereby defines the contacts in the axial direction. The retaining ring 9 can also carry at least one retaining tongue 10, preferably projecting radially inward in its plane, which extends through a channel or opening 14 in the insulating body 3 m in the region of a further bore for a central contact 41 and engages its depression in the use position, so that this further contact 41 located outside the ring area is also axially fixed.

Anspüche

Claims

Expectations

1. Plug (1) with a sleeve (2) and with a m use position m of the sleeve (2) arranged insulating body (3) and with elongated contacts (4), the m receiving holes or bores (6) of the insulating body m are fixed in the position of use by means of projections which engage in the groove-like recesses (7), which are at right angles to the longitudinal direction of the contacts (4), the perforations or bores (6) with the elongated contacts (4) being concentric with the center of the sleeve ( 2) or the insulating body imaginary cylinder and thus m the same distance from the inside of the sleeve (2) or the surface (3a) of the insulating body (3), with em further contact (41) inside the imaginary cylinder parallel to the other contacts (4) is arranged inside a perforation or bore (6), characterized in that the insulating body (3) has at least one on its outside (3a) which is open and open to the outside

Has groove (8) which cuts the holes or bores (6) for the contacts (4) over part of their radial extent on the side thereof facing the outside (3a) of the insulating body (3), and that the groove (8) is arranged on the insulating body (3) at the height at which the depressions (7) of the contacts (4) are in the position of use, that e made of insulating material, at least over a part of the entire circumference of the insulating body (3) extending latching or retaining ring (9) is provided, which fits into the groove (8) of the insulating body (3) and engages in the position of use as a projection m the recesses (7) of the contacts (4), and that the retaining ring (9) at least one after inside protruding tongue (10) carries m in the use position engages from the groove (8) inwardly extending channel or opening (11) and until the recess (7) of the inside of the imaginary cylinder further contact (41) and the hole or bore (6) receiving it protrudes.

2. Plug according to claim 1, characterized in that the retaining ring (9) extends only over a pitch circle and its two free ends (9a) can be moved apart at least so far that their distance m this deformed state the diameter of the insulating body (3) corresponds to the groove (8) in the area of the bottom.

3. Plug according to claim 1 or 2, characterized in that on the elongated contacts (4,41) or contact pins, in particular on their circumferential groove-like depressions (7) each of a radially projecting from the contact area collar (12) or the like are limited and this collar (12) on the side facing away from the recess (7) has a slope or a cone (13) which runs into the bore (6) against the retaining ring (9) when the contact (4,41) is inserted and this deflects radially outwards until the recess (7) of the contact (4.41) is in accordance with the groove (8) of the insulating body (3), so that the retaining ring (9) automatically m the

Indentation (7) of the contact (4.41) occurs.

4. Plug according to one of claims 1 to 3, characterized in that one of the arranged on an imaginary cylinder contacts as a ground contact (411) and is released from the retaining ring (9) and that this ground contact (411) with a the groove ( 8) of the insulating body (3) matching and use position, the recess (7) on the ground contact (411) engaging and Earthing contact (411), in particular with spring arms (15) which detects and detects electrically conductive holding spring or the like in the axial direction, can be fixed.

5. Plug according to claim 4, characterized in that the free ends (9a) of the retaining ring (9) m use position on both sides of the grounding contact (411) are arranged at a distance from this.

6. Plug according to claim 4 or 5, characterized in that the retaining spring (14) for the ground contact (411) consists of metal or electrically conductive plastic and in particular on its outside has a bead or projection (16) which, in the position of use, the surface of the insulating body (3) at least by the play of the insulating body (3) relative to the sleeve (2) and / or the play of the retaining spring (14) m of the groove (8) of the insulating body (3).

7. Plug according to one of claims 1 to 6, characterized in that the cross section of the retaining ring (9) m

Position of use approximately fills the cross section of the groove (8) or at least the radial extension or width of the retaining ring (9) corresponds to that of the groove (8) and the sleeve (2) receiving the insulating body (3) defines the position of use of the retaining ring (9).

8. Plug according to one of claims 1 to 7, characterized in that the radially inwardly projecting retaining tongue (10) of the retaining ring is concave on its end face and thereby at least partially to the peripheral shape of the further contact to be held by it (41) at the bottom from the recess (7) is adapted.

9. Plug according to one of the preceding claims, characterized characterized in that the retaining ring (9) wraps more than 180 ° of the insulating body (3) within the groove (8), which preferably runs around the entire circumference thereof.

10. Plug according to one of claims 1 to 9, characterized in that the free ends (9a) of the retaining ring (9) against each other are chamfered in such a way that they facilitate insertion or insertion of the groove (8) of the insulating body (3) into the insertion funnel form.

11. Plug according to one of the preceding claims, characterized in that the insulating body (3) enclosing sleeve (2) consists of metal and the housing of the plug

(1) forms, optionally outside thread (17) carries.

12. Plug according to one of claims 1 to 11, characterized in that the sleeve (2) on its inside positioning projections or depressions and the Isolierkör- body (3) have matching deformations (18) which upon axial insertion of the insulating body ( 3) determine its preselected rotational position.

13. Plug according to one of claims 1 to 12, characterized in that in the interior of the sleeve in an axial

Effective shoulder cutting is provided, behind which, when viewed in the insertion direction, at least one radially resilient or compressible latching tongue (19) protruding from the insulating body (3) in the radial direction fits, which can be pivoted resiliently.

14. Plug according to claim 13, characterized in that the resiliently flexible or deformable locking tongue (19) in the radial direction about a parallel to the central axis of the Insulating body (3) or the plug (1) extending pivot axis is pivotable and extends in the circumferential direction of the insulating body (3).

15. Plug according to claim 13 or 14, characterized in that the elastically deformable locking tongue (19) with a

Side surface (22) adjoins the groove (8) and delimits the groove (8) and that the retaining ring (9) and / or the retaining spring

(14) position of use locks the resilient locking tongue (19) against axial deformation.

16. Plug according to one of claims 13 to 15, characterized in that the latching tongue (19) on its outside has a latching projection (23), the radial extent of which is equal to or kiemer than the deformation path of the latching tongue

(19) m radial direction.

17. Plug according to one of claims 1 to 16, characterized in that the width of the retaining ring (9) is adapted to the radial distance of the outwardly facing surface of a contact (4) or contact pin from the outside (3a) of the insulating body (3) and that the width of the retaining ring (9) is larger in the area of thin contact pins or contact sockets than in the area of thicker contact pins or contact sockets.

18. Connector according to one of claims 1 to 17, characterized in that the retaining tongue (10) practically m the middle between the free ends (9a) of the retaining ring (9) and also m the same level as the rest

Ring course is located, so that it is practically formed on the neutral zone when bending the retaining ring (9).

/Summary