CN112803197B

CN112803197B - Electrical plug connector system with locking element

Info

Publication number: CN112803197B
Application number: CN202011258881.9A
Authority: CN
Inventors: 尼克拉斯·布兰德; 瓦莱里·赖姆申
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2019-11-12
Filing date: 2020-11-12
Publication date: 2022-06-28
Anticipated expiration: 2040-11-12
Also published as: CN112803197A; DE102019130491B3

Abstract

The invention relates to an electrical plug connector system (10) having two connecting parts (20; 30) with a first and a second locking element (24; 25; 26; 44; 45; 46), which are designed and adapted to each other in such a way that they force the first and the second locking element (24; 25; 26; 44; 45; 46) to lock by form-locking when the two connecting parts (20; 30) are axially plugged together. Furthermore, a swivel (40) is provided, the position of which can be locked by a locking element (50; 50') having a resilient locking section (51), wherein the locking section (51) can be accessed from the outside through an opening (42) in the swivel (40). The locking element (50; 50 ') is mounted on the second connecting part (30) so as to be axially displaceable and is displaced by the first connecting part (20) during the plugging process from a first position into a second position against the spring force, in which second position a locking section (51) of the locking element (50; 50') engages in a latching manner in a recess (42) of the swivel (40), whereby a rotation of the swivel (40) is prevented in the latching position.

Description

Electrical plug connector system with locking element

Technical Field

The present invention relates to an electrical plug connector system according to the preamble of claim 1. The plug connector system has two electrical connecting parts which, after being plugged together, are locked to one another by means of a locking element, so that they cannot be easily separated axially. In this case, one connecting part has a swivel which, for locking with the other connecting part, is rotated about its longitudinal axis and then swiveled back again.

Background

It is known in the field of electrical plug connector systems to connect a plug to a mating plug. The plug and the mating plug each have electrical conductor contacts which are electrically conductively connected to one another by introducing the plug into the mating plug. The electrically conductive connection can be implemented in different ways. In order to achieve a mechanical connection of the two plugs, for example using a bayonet connection or other axial locking, it is part of a coupling device which can preferably be operated simply and as quickly as possible. For this purpose, a complementary element, for example a swivel ring, is usually installed in the coupling device, which is rotated and/or pushed in order to axially lock the two plugs. Such a swivel can be implemented in particular spring-loaded.

For example, US 7776638B 2 discloses a plug connector system with a swivel which is rotatably held on a first connecting part. The locking is performed by means of the swivel ring and the locking element on the second connecting part. By means of the arrangement and shaping of the locking element, the swivel rotates against the spring force when the second connecting part is inserted into the swivel and rotates back again to its initial position due to the spring force when the locking element has reached a specific axial locking state. To release the plug connection again, the swivel is manually rotated into a position in which the locking elements are disengaged from one another again, so that the two connecting parts can be axially separated.

However, in such a quick lock it is not protected against illegal opening/separation, since it can be manually released in a simple manner by rotating the swivel. However, this is often a requirement, especially if the electrical plug connector system is used in an easily accessible area. For example, there may be a need to be able to disconnect the plug connection only by means of a tool.

For example, solutions are also known in which the coupling device has one or more screws, by means of which the two connecting parts can be fixedly connected to one another or disconnected from one another, which each require the use of a screwdriver. Furthermore, solutions are also known in which the connection is made automatically without additional tools, but tools are required for releasing the connection.

Coupling devices with locking elements are also known, in which, when the first connecting part is inserted into the second connecting part, for example, elastic tongues on the first connecting part engage in receptacles in the second connecting part. For releasing the connection, the elastic tongue can be accessed from the outside, so that it can be pushed inward by means of a tool, in order to be able to thereby release the latch and pull the second connection part out of the first connection part.

EP 1625641B 1 discloses, for example, a coupling device for an electrical connector, by means of which a contact block is connected to a handle via a bayonet connection. A separate elastic latching element can be mounted on the contact block, which snaps into a recess in the handle when the contact block is pushed in and then rotated relative to the handle, thereby causing an axial locking. The position of the recess is such that it can be easily reached, so that to release the coupling device the elastic locking element is pushed inward by means of a tool, thereby removing the latching.

However, this coupling device has the disadvantage that the elastic locking element must first be tensioned radially when the two connecting parts are plugged together, in that the spring section is pushed radially inward. For this purpose, the two connecting parts must be configured accordingly. In addition, when such a locking element is used with an additional swivel, it is advantageous to ensure that the locking element on one connection part engages only with the other connection part and that the user does not have to actuate the locking element before the actual insertion process.

Disclosure of Invention

It is therefore an object of the present invention to provide an improved electrical plug connector system with a quick lock which can be released only by means of a tool.

This object is achieved by an electrical plug connector system having the features of claim 1. Advantageous embodiments of the plug connector system are specified in the dependent claims 2 to 10.

The electrical plug connector system according to the invention has a first connecting part with a tubular plug section which is provided with at least one first locking element. Preferably, a plurality of locking elements is provided. In addition to the tubular plug section, the first connecting part can also have further regions which are configured accordingly according to the field of application and the requirements for the plug connector system. The plug connector system also has a second connecting part with a likewise tubular bearing section and a swivel, which is provided with at least one second locking element. Preferably, a plurality of locking elements are also provided on the swivel. The swivel is coaxially rotatably mounted on the bearing section of the second connecting part.

The plug section of the first connecting part is designed to be inserted telescopically into the swivel ring of the second connecting part during the plugging process. The first and second locking elements are designed and adapted to each other in such a way that they cause a locking of the first and second locking elements in the axial locking position when the plug section is inserted into the swivel ring while the swivel ring is rotated about the bearing section of the second connecting part. The axial locking is thus achieved in that, in the locking position, the locking elements of the two connecting parts are placed against one another such that a form-fit is established in the axial direction between each two locking elements. Thus, the locking elements, which are axially aligned with each other, prevent the separation of the two connecting parts.

The two connecting parts are constructed such that they can be provided with a plurality of electrical connection contacts which are brought into electrical contact after the two connecting parts have been plugged together. These electrical connection contacts with the corresponding power supply can be configured according to the field of application. In particular, the electrical connectors and/or lines are guided through the tubular plug section of the first connecting part and the tubular support section of the second connecting part.

In order to ensure that the plug connector system is in the locked state, the swivel has at least one recess, and at least one locking element, which has a resilient locking section, is mounted on the bearing section of the second connecting part, which locking section latches with the recess on the swivel in the locking position of the first and second locking elements. This is caused in that the locking section is moved radially outward by the spring loading and is thus inserted into the recess. The locking section is formed, for example, by an arm or a web, which projects compliantly and elastically from the locking element. As long as the locking section is not located in the region of the cutout in the swivel ring, it is pushed radially inward by the inner geometry of the swivel ring and is therefore spring-prestressed. If the locking section is moved into the region of the recess in the swivel, it is moved radially outward by the spring prestress and engages in the recess in a locking manner.

In this case, the locking section is accessible from the outside through a recess in the swivel ring, so that it can be pushed radially inward by means of a tool. In this way, the engagement of the pivot in the recess can be manually cancelled.

According to the invention, the locking element is mounted on the bearing section of the second connecting part so as to be displaceable in the axial direction and is preferably guided linearly. Thus, its bearing section with respect to the second connecting part is not located in a fixed axial position, but is guided movably between different axial positions. The plug connector system is designed such that, when the plug section of the first connecting part is inserted into the swivel ring, the first connecting part moves the locking element axially against a spring force from a first position into a second position in which the locking section of the locking element engages in a locking manner in the recess of the swivel ring, thereby preventing rotation of the swivel ring in at least one direction. In this case, in particular, a rotation of the swivel ring in a direction which could cause the lock to be released is prevented.

Thus, an electrical plug connector system can be provided which has a safe and simple quick locking with the swivel. For locking, no tools are required, but locking is done automatically during the plugging process. In this case, the locking against an incorrect detachment/opening is ensured, since the locking element of the catch prevents a manual rotation of the swivel in the unlocking direction. However, the locking element is accessible from the outside, so that it can be pushed inwardly by means of a tool in order to unlock the lock. In another way, the locking element cannot be disengaged from its latching with the swivel, preferably without irreversible damage to the plug connector system. Safety regulations can thus be met in this respect.

However, as long as the first connecting part has not yet been introduced with its tubular plug section into the swivel ring, the locking element is not located in the region in which it can latch with the recess in the swivel ring. The swivel can thus be rotated freely first, and for this purpose the user does not have to actuate the locking element in any way. This only causes the locking element to move into its axial position in which it can be latched with the recess in the swivel ring when the first connecting part is pushed with its plug section into the swivel ring. This takes place automatically when the plug-in section is inserted, so that the locking element does not have to be actuated by the user either. The locking is only effective when the two connecting parts engage with one another. This simplifies the handling of the plug connector system and increases its user comfort, since the user would otherwise have to first release the latching of the latching element before each plugging operation.

The position and design of the locking element and the recess in the swivel are preferably selected such that the locking of the locking element with the recess in the swivel is only accomplished in the region of the locking position of the first and second locking elements. The locking of the plug connector system and the fixing by the locking element are therefore suitably coordinated with one another.

In the following, the first position of the locking element relative to the bearing section of the second connecting part is also referred to as the standard position, while the second position is referred to as the latching position, in which the locking element can be latched with the swivel. In one embodiment of the invention, the axial displacement of the locking element from the normal position into the latching position takes place against a spring force, whereby the locking element is displaced into the normal position again by the spring force after the latching of the locking element is released and the first connecting part is removed. This further simplifies the release and re-insertion of the plug connector system for the user, since the return movement of the locking element into the standard position takes place automatically.

For example, the locking element has at least one axially acting spring element which is loaded in a compressive or tensile manner when the locking element is moved axially from the first position into the second position. The spring element is designed in one piece with the locking element. For example, one or more spring arms which protrude compliantly and elastically from the region of the locking element. Such a spring element is supported, for example, in the region of the second connecting part. In a further embodiment of the invention, the spring element is a separate part, for example a spring which is tensioned between a region of the locking element and a further region of the second connecting part.

The spring element can here contact the second connecting part at different positions. For example, the second connecting part can have, in addition to its tubular bearing section, a plug body from which a tubular bearing section for the swivel projects. In one embodiment of the invention, the spring element is supported on the plug body in a region in which the outer contour of the plug body projects radially beyond the outer contour of the tubular bearing section of the second connecting part. At least in this region, therefore, a shoulder is formed between the tubular bearing section and the further plug body, on which shoulder the spring element can be axially supported. The locking element is then pushed in the direction of this shoulder during the plugging process, so that the spring element or spring elements between them are tensioned. In a further embodiment of the invention, the spring element is supported on a stop formed on the tubular bearing section of the second connecting part.

Advantageously, a movement of the locking element in the direction of the first connecting part is limited. This is likewise achieved, for example, by means of at least one stop, so that the normal position of the locking element is defined by the at least one stop and the spring element or spring elements of the locking element cannot move further beyond this stop. The locking element thus ensures that it does not fall out in the normal position.

The locking of the plug connector system can be carried out in different ways depending on the locking elements on the two connecting parts. For example, a bayonet connection can be used, in which the locking element is positively locked in the corresponding channel by a plugging movement and a rotational movement. The snap-in locking is preferably implemented such that the locking element of the first connecting part, when inserted into the swivel ring, acts on the locking element on the swivel ring and exerts a force on it, so that it causes the swivel ring to rotate about the bearing section. The swivel ring is thus caused to rotate radially by the axial plug-in movement. This is achieved, for example, by ramp-like flanks on the locking elements sliding on one another. Starting from a specific axial position of the two connecting parts with respect to each other, the locking element allows the swivel to be turned in the opposite rotational direction. This rotation causes the locking elements to move relative to each other to a position in which the first and second locking elements are respectively positioned relative to each other such that they cause an axial form-fit.

In one embodiment of the invention, the first and second locking elements are therefore configured such that, when the tubular plug section of the first connecting part is introduced into the swivel ring, the first locking element causes the swivel ring to rotate from the rest angular position into the deflection angular position by sliding on the second locking element, and causes the first and second locking elements to be axially locked in their axially locked position by rotating the swivel ring from the deflection angular position back into the rest angular position.

The second connecting part preferably has a spring mechanism by means of which the swivel is able to rotate against a spring force from the rest angular position into the deflected angular position. As soon as the mutual position of the locking elements permits, the swivel is automatically rotated from the deflected angular position back into the rest angular position by the spring force. Thus, a plug connector system with a simple and effective quick locking can be provided.

However, it is also possible to embody the swivel without such a spring mechanism and to rotate back manually into the rest angular position. Furthermore, the spring mechanism acts, for example, between the swivel and the tubular bearing section of the second connecting part in that one or more springs are tensioned between these two parts. However, the spring mechanism may also act between the swivel and other parts of the second connecting part.

The locking element may also be arranged at different positions of the two connecting parts. Preferably, the first locking element is formed on the outer circumference of the tubular plug section of the first connecting element, and the second locking element is formed on the inner circumference of the tubular swivel ring of the second connecting part. If the plug section of the first connecting part is pushed telescopically into the swivel ring, its first locking element contacts a second locking element on the swivel ring. The outer diameter of the plug section and the inner diameter of the swivel are correspondingly adapted to one another, whereby the contacting takes place.

Drawings

Further advantages, features and advantageous embodiments of the invention are given in the dependent claims and in the following description of preferred embodiments with reference to the drawings.

Therein is shown

Fig. 1 shows a three-dimensional view of an embodiment of a plug connector system according to the invention in an exploded state;

fig. 2 shows the plug connector system according to fig. 1 during plugging;

fig. 3 shows the plug connector system according to fig. 1 after locking;

fig. 4A shows the plug connector system with a locked detail view at the beginning of the plugging process;

fig. 4B shows the plug connector system according to fig. 4A during a continued plugging process;

Fig. 4C shows the plug connector system according to fig. 4A after locking;

fig. 5 shows the plug connector system according to fig. 1 without a swivel, with a first embodiment of the locking element;

fig. 6A shows the plug connector system according to fig. 5 in a disassembled state;

fig. 6B shows the plug connector system according to fig. 5 during plugging;

fig. 6C shows the plug connector system according to fig. 5 after locking;

FIG. 7A shows a detail view of the locking element without the latch;

FIG. 7B shows a detail view of the locking element of the latch;

FIG. 8 shows a detail view of the locking element with the tool inserted;

FIG. 9 shows a detail view of the latch release locking element;

FIG. 10 shows a second connecting part without a swivel, with a second embodiment of the latching element;

fig. 11 shows the plug connector system with the connecting part according to fig. 10 without swivel after locking;

fig. 12 shows a connecting part without swivel with a third embodiment of the locking element; and is

Fig. 13 shows the plug connector system with the connecting part according to fig. 12 without swivel after locking.

Detailed Description

Fig. 1 shows a three-dimensional view of an embodiment of a plug connector system 10 according to the invention in an exploded state. The plug connector system 10 comprises two connecting

parts

20 and 30, which can also be referred to as plug and mating plug. The first connecting part 20 has a plug body 22 and a tubular plug section 21, which projects from the plug body 22. A plurality of locking elements, two of which 24 and 25 are visible in the perspective of fig. 1, are arranged distributed over the outer contour of the plug section 21 in the circumferential direction. These locking

elements

24, 25 project radially outward from the outer contour of the plug section 21 and have a tip pointing away from the plug body 22.

The second connecting member 30 is composed of a plurality of pieces connected to each other. It likewise has a plug body 32 from which a tubular support section 31 projects. A swivel ring 40 is mounted coaxially rotatably on the bearing section 31, so that the swivel ring 40 can rotate about a common longitudinal axis L. A plurality of locking elements, three of which 44, 45 and 46 are visible, are likewise arranged on the inner periphery 41 of the swivel ring 40. These locking

elements

44, 45, 46 likewise have a tip pointing away from the plug body 32. This is particularly apparent from the locking element 46. In addition, the swivel 40 has a notch 42. Which is located in the region of the plug body 32 and opens as a slit towards the plug body 32. However, it can also be configured as a completely closed opening.

The

plug bodies

22, 32 and the swivel 40 may have a substantially circular outer contour in cross-section. A plurality of grooves or grooves may be provided on this outer contour, for example, in order to achieve a secure grip of the plug connector system and its components (not shown). In the embodiment of the figures, it is also provided that the parts have straight surfaces facing each other, which lie in parallel planes. These gripping

surfaces

43a and 43b are visible on the swivel 40. Fig. 1 shows a gripping surface 23a on the first connecting part 20, however the connecting part 20 likewise has an opposite further gripping surface. The same is true for the second connecting part 30 and its gripping surface 33 a. The notch 42 in the swivel 40 is located, for example, inside the grip surface 33 a.

The swivel ring 40 is preferably mounted on the bearing section 31 in a spring-loaded manner. This means that a spring mechanism is provided against which the swivel ring 40 can be rotated on the bearing section 31. If the swivel rotates, it resists the spring force, which can rotate the swivel 40 back again to the initial angular position.

The two

connection parts

20, 30 are constructed such that they can be provided with a plurality of electrical connection contacts which are electrically contacted after the two connection parts have been plugged together. These electrical connection contacts with the corresponding power supply can be configured according to the field of application and are not shown in detail in the figures. In particular, a plurality of electrical connections and/or lines are routed through the tubular plug section 21 of the first connecting part 20 and the tubular support section 31 of the second connecting part 30. The figures also show only the region of the two connecting

parts

20, 30 which is designed for a plug connection. The design of the connecting parts outside this region is not shown, so that the flanged sides of the two connecting

parts

20, 30 are shown in each case.

Fig. 2 shows the plug connector system according to fig. 1 in the plugging process. The tubular plug section 21 of the first connecting part 20 is pushed telescopically (teleskopart ig) into the swivel 40. Here, the locking elements of the first coupling member 20 have contacted the locking elements in the swivel 40. By their pointed shape, they constitute ramp-like sides which are positioned relative to each other such that the first locking elements slide over the second locking elements, respectively. In this case, the first locking element exerts an axial force on the second locking element, which is deflected by the ramp and thus rotates the swivel ring in the direction of the rotation arrow D1. The rotating ring is driven to rotate radially by axial insertion movement. If the second locking element is exceeded, the swivel ring 40 can be swiveled back again into its initial angular position, as is shown in fig. 3 with the swivel arrow D2. In this position, the gripping surfaces of the plug body 22, the plug body 32, and the swivel 40 are aligned with one another in a coherent plane.

In this position, the first and second locking elements are also positioned relative to each other such that they establish a positive lock in the axial direction. This is illustrated according to the embodiment of fig. 4A to 4C. These figures show the plug connector system in a locked detail view, with the swivel shown partially removed. However, the design of the first and second locking elements does not correspond to the embodiment shown in fig. 1, but an alternative embodiment is selected. In this embodiment, the triangular locking elements on the plug section 21 likewise have a tip pointing in the direction of the second connecting part 30. However, the locking elements on swivel 40 are configured as noses on larger structures. Fig. 4A to 4C show, for example, a triangular locking element 24 on the plug section 21. A structure having a nose 44 is formed on the inside of the swivel 40.

At the beginning of the plugging process, the bevel of the locking element 24 touches the bevel of the nose 44. The locking element 24 slides along the nose 44, wherein this causes the swivel 40 to rotate. The same applies to the other locking elements in the circumferential direction of the plug-in section 21. In particular, the rotation of the swivel ring 40 is performed against the spring force of a spring mechanism (not shown), whereby at least one spring is tensioned. During the further plugging process, the locking element 24 slides along the face of the nose 44 in the axial direction, as can be seen in fig. 4B. When the axially locked position is reached, the swivel 40 can be swiveled back again, and the locking element 24 is now located behind the nose 44. The pivoting back of the pivot 40 is caused in particular by the spring force of the spring mechanism. After this, a form-fit is established in the axial direction between the locking element 24 and the nose 44 (fig. 4C), so that the plug section 21 cannot be pulled out of the swivel 40. By rotating the swivel ring 40 again, this form-locking can be released and the plug section 21 can be pulled out of the swivel ring again. This re-rotation of the swivel 40 is performed manually.

In order to ensure such a quick locking in the locked state against an incorrect detachment/opening, a locking element is provided according to the invention on the second connecting part 30. The locking element can be configured in different ways and a plurality of possible embodiments are described below. In order to illustrate the different locking elements and their way of operation, a plug connector system without swivel is shown in the subsequent figures. Fig. 5 shows, for example, the plug connector system according to fig. 1 without a swivel and with a first embodiment of the locking element 50. In this illustration, it can be seen that a plurality of receptacles are formed by beams on the outer side of the support section 31. For example,

spring receptacles

34 and 35 are provided, by means of which a plurality of springs of a spring mechanism can be tensioned between support section 31 and swivel ring 40 (not shown).

In addition,

such receptacles

34, 35 serve in the embodiment according to the invention for axially and radially guiding the swivel ring 40 on the bearing section 31. For this purpose, one or more guide cams are provided on the inner side of the swivel ring 40, for example, which engage in corresponding receptacles. One or more projections on the inside of the swivel 40 can also be used to latch the swivel 40 when it is assembled with the bearing section 31, so that the swivel 40 can no longer be removed from the bearing section 31 afterwards.

Between these

spring receptacles

34 and 35, a further receptacle 36 is formed by a beam, in which the locking element 50 is received and guided in a linear manner. The locking element 50 has a flat base body from which two arms project in the axial direction. These arms are V-shaped relative to one another and form two

spring elements

52 and 53, which are also referred to as spring arms, on the locking element. The

spring elements

52, 53 point in the direction of the plug body 32. Furthermore, a locking section 51 is formed on the locking body 50, which has the shape of a web. The lug 51 is located in a recess in the locking element 50, but it can also be arranged freely. The webs 51 are formed elastically in the radial direction, the spring force acting radially outward. In the illustration of fig. 5, the tab 51 is thus pushed out of the view plane by the spring force.

Two stops 37 and 38 are also formed on the tubular support section 31, against which the locking element 50 comes into contact by forming corresponding shoulders. The stops 37 and 38 thus limit the movement of the locking element 50 in the direction of the first connecting part 20. The locking element 50 can be moved in opposite directions inside the receptacle 36, so that the axial position of the locking element 50 can be varied. When the locking element 50 is moved in the direction of the plug body 32, the

spring elements

52, 53 bear on them, are loaded with pressure and are therefore tensioned.

The mode of operation of the locking element 50 is explained with reference to fig. 6A to 6C. Fig. 6A shows the plug connector system according to fig. 5 in a disassembled state. The locking element 50 bears against the

stops

37 and 38 and against the plug body 32. In this position, the locking section 51 of the locking element 50 is located outside the cutout 42 of the swivel (see fig. 1), and this position of the locking element 50 is referred to as the standard position. If the plug section 21 is pushed into a not shown swivel, it is in contact with the locking element 50. Fig. 6B shows that the plug section 21 is here covered on the support section 31, i.e. the support section 31 is pushed telescopically into the plug section 21. The diameter of the

tubular sections

21 and 31 is selected accordingly.

The plug section 21 pushes the locking element 50 in the direction of the plug body 32. The locking section 51 is thereby also moved axially in this direction and the

spring elements

52 and 53 are tensioned. This is carried out to a maximum displacement and deformation at which the plug-in section 21 strikes against the

stops

37, 38. In this state, the locking section 51 of the locking element is located in the region of the recess 42 in the swivel ring 40, so that it can now be pivoted radially outward by the spring force. The locking section 51 latches into the recess 42. This maximum displacement and deformation is shown in fig. 6C, and this position of the locking element 50 is referred to as the latching position. In this position, the first and second locking elements of the two connecting

parts

20, 30 are also locked.

Fig. 7A and 7B show the latching operation of the locking element 50 in an enlarged detail view. In each case a cross section through the second connecting element, fig. 7A shows the region outside the cutout 42 in the swivel ring 40, while the section plane of fig. 7B extends through the cutout 42. Fig. 7A shows the state of fig. 6A, in which the locking element 50 is in the normal position. The locking section 51 is pushed radially outward in particular by a spring force, but remains in this tensioned state due to the geometry of the swivel ring 40. Fig. 7B shows the state of fig. 6C, in which the locking member 50 is in the locked position. The locking section 51 reaches the recess 42 in the swivel ring 40 and can be pivoted radially outward by the spring force. Thus, it now fits into the notch. A locking of the possible rotational movement of the swivel ring 40 in the direction of the rotational arrow D1 is thus achieved. The swivel ring 40 cannot be manually rotated in this direction, whereby the locked state of the two connecting

parts

20, 30, which is now achieved, is ensured against an illegal separation/opening. In this case, the force is transmitted via the locking section 51 to the locking element 50, which is supported on the bearing section 31.

This securing can be cancelled by pushing the locking section 51 radially inward against its spring force by means of a tool in order to cancel its engagement in the recess 42. Fig. 8 shows a detail of the locking element 50 with a tool 60, which is inserted into the recess 42 for this purpose. Fig. 9 shows the release of the latch by means of the tool 60.

Fig. 10 shows a second connecting part without a swivel, which has a locking element 50' of the second embodiment. The locking element 50' is still held and guided linearly inside the receptacle 36 formed by the beam. The locking element 50' has a spring element 54 in the form of a projecting arm. The spring element 54 is supported on the stop 39'. Furthermore, the locking element 50' has a guide 55 in the form of a groove, in which the further stop 39 is guided. The locking section 51 is still designed as a tab, which is pushed radially outward by the spring force. Fig. 10 shows the locking element 50' in its normal position. In this position, it is pushed away from the plug body 32 by the stress of the spring element 54, wherein this is limited by the guide 55 abutting against the stop 39. In this standard position of the locking element 50', the locking section 51 is located outside the recess 42 on the swivel ring 40. Fig. 11 shows the locking element 50 in the latched position, in which it is pushed by the plug-in section 21 of the first connecting part 20. The guide 55 now bears against the opposite side of the stop 39, and the spring element 54 bears against the stop 39' and is tensioned. The locking element 51 can engage in the recess 42 in the swivel ring 40 and thus lock the swivel ring. If this engagement is canceled by the tool, the locking element 50' is moved back into its normal position by the spring force of the spring element 54.

Fig. 12 shows the connecting part without the swivel ring, which has a locking element 50 ″ of the third embodiment. In this embodiment, the locking element 50 ″ still has a locking section 51 in the form of a web, which is constructed in the manner already described. However, the locking element 50 ″ does not have an integrally formed spring element, but rather a separate spring element in the form of a helical spring 70. The spring 70 is supported between the body of the latch member and the plug body 32 and urges the latch member 50 "away from the plug body 32 to its normal position under stress. The axial compression spring is referred to herein. When the locking element 50 ″ is moved in the direction of the plug body 32, the spring is tensioned under pressure. Fig. 13 shows the locking element 50 ″ in its latched position after locking.

Description of the reference numerals

Plug connector system 10

First connecting part, plug 20

Plug-in section, tubular 21

Plug main body 22

Gripping surface 23a

Locking

elements

24, 25, 26

Second connecting part, socket, mating plug 30

Supporting sections, tubular 31

Plug main body 32

Gripping surface 33a

Spring receiving parts

34, 35

Accommodating part 36

Stops

37, 38, 39'

Swivel 40

Inner periphery 41

Notch 42

Gripping

surfaces

43a, 43b

Locking element,

noses

44, 45, 46

Locking

element

50, 50', 50 ″

Locking section 51

Spring elements

52, 53, 54

Guide part 55

Tool 60

Spring 70

Claims

1. Electrical plug-in connector system (10) having

A first connecting part (20) having a tubular plug-in section (21) which is provided with at least one first locking element (24; 25; 26);

a second connecting part (30) with a tubular bearing section (31) and a swivel (40) which is provided with at least one second locking element (44; 45; 46) and is coaxially rotatably mounted on the bearing section (31);

Wherein the plug-in section (21) of the first connecting part (20) is designed for telescopic insertion into a swivel ring (40) of the second connecting part (30); and is

The first and second locking elements (24; 25; 26; 44; 45; 46) are configured and fitted to each other such that they cause an axial locking of the first and second locking elements (24; 25; 26; 44; 45; 46) in the axial locking position upon this insertion of the plug-in section (21) into the swivel (40) and simultaneous rotation of the swivel (40) about the bearing section (31) of the second connecting part (30);

wherein the swivel (40) has at least one recess (42) and at least one locking element (50; 50') is mounted on the bearing section (31) of the second connecting part (30), which has an elastic locking section (51) that engages in a locking position of the first and second locking elements (24; 25; 26; 44; 45; 46) in the recess (42) on the swivel (40) in a locking manner in that the locking section (51) is moved radially outward by a spring load, wherein the locking section (51) can be reached from the outside through the recess (42),

it is characterized in that the preparation method is characterized in that,

the locking element (50; 50 ') is mounted on a bearing section (31) of the second connecting part (30) in an axially movable manner, and the first connecting part (20) moves the locking element (50; 50 ') axially against a spring force from a first position into a second position when the plug-in section (21) of the first connecting part (20) is inserted into the swivel ring (40), in which second position the locking section (51) of the locking element (50; 50 ') engages in a latching manner in the recess (42) of the swivel ring (40), thereby blocking a rotation of the swivel ring (40).

2. A plug connector system according to claim 1, wherein the locking element (50; 50') has at least one spring element (52; 53; 54; 70) which is loaded in an axial compressive or tensile manner when the locking element (50) is moved from the first position into the second position.

3. Plug connector system according to claim 2, wherein the spring element (52; 53; 54; 70) is constructed integrally with the locking element (50; 50'; 50 ") or as a separate part.

4. Plug connector system according to claim 2 or 3, wherein the spring element (52; 53; 54; 70) is supported on the plug body (32) of the second connection part (30) in a region in which an outer contour of the plug body (32) projects radially beyond an outer contour of the tubular bearing section (31) of the second connection part (30).

5. Plug connector system according to one of claims 2 to 4, wherein the spring element (52; 53; 54; 70) bears against a stop which is formed on the tubular bearing section (31) of the second connection part (30).

6. Plug connector system according to one of claims 1 to 5, wherein a movement of the locking element (50) in the direction of the first connecting part (20) is defined.

7. Plug connector system according to one of claims 1 to 6, wherein the first and second locking elements (24; 25; 26; 44; 45; 46) are configured such that the first locking element (24; 25; 26) causes the swivel (40) to rotate from the rest angular position into the deflected angular position and the first and second locking elements (24; 25; 26; 44; 45; 46) to axially lock in their axial locking position by sliding on the second locking element (44; 45; 46) when the tubular plug section (21) of the first connecting part (20) is inserted into the swivel (40) in such a way that the swivel (40) is swiveled from the deflected angular position into the rest angular position.

8. Plug connector system according to one of claims 1 to 7, wherein the second connecting part (30) has a spring mechanism by means of which the rotary ring (40) can be rotated against a spring force from a rest angular position into a deflected angular position and by means of which the rotary ring can be rotated back from the deflected angular position into the rest angular position.

9. Plug connector system according to claim 8, wherein the spring mechanism acts between the swivel (40) of the second connecting part (30) and the tubular bearing section (31).

10. A plug connector system according to one of claims 1 to 9, wherein the first locking element (24; 25; 26) is formed on the outer circumference of the tubular plug section (21) of the first connection part (20) and the second locking element (44; 45; 46) is formed on the inner circumference of the swivel (40) of the second connection part (30).