Electrical plug connection and locking element

Abstract

The invention relates to an electrical plug connection device having a plug connector and a mating plug connector and having a locking element by means of which the plug connector can be locked on the mating plug connector, wherein the locking element is fixed on the plug connector and has at least one first locking element which is designed for locking with a second locking element which is arranged on the mating plug connector, wherein by locking the first locking element with the second locking element the plug connector can be locked on the mating plug connector by means of the locking element, characterized in that the locking element has a frame with an internal opening, wherein in the installed state a region of a housing of the plug connector projects through the frame.

Description

Technical Field

[0001] This invention relates to an electrical plug-in connection device having a plug connector and a mating plug connector, and a locking element by which the plug connector can be locked onto the mating plug connector. The locking element is fixed to the plug connector and has at least one first locking element designed to lock with a second locking element disposed on the mating plug connector. The plug connector can be locked onto the mating plug connector by means of the locking element through the locking of the first and second locking elements. The invention also relates to a locking element of such an electrical plug-in connection device. Background Technology

[0002] To reliably hold an electrical plug-in connection device formed by a plug-in connector and mating parts in a plugged-in state, a locking mechanism is required. Numerous proposals for this exist in the prior art. For example, refer to DE 10 2014107 950 A1. This shows a plug-in connector device having a locking element and an advantageous releasing mechanism for releasing the locking element by means of a crank mechanism. Another plug-in connection device and releasing element are known from DE 10 2016 102 071 B3. Summary of the Invention

[0003] The present invention aims to further improve the electrical plug-in connection device and locking element.

[0004] The aforementioned objective is achieved in the type of electrical plug-in connection device mentioned earlier by means of a locking element having a frame with a preferably continuous internal opening, through which a region of the connector housing protrudes in the installed state. The frame can be fitted, in particular, with the dimensions of the region of the connector housing through which the connector protrudes by means of its internal opening. Thus, the internal opening of the frame can be completely or at least substantially filled, for example, at least 90%, by the region of the connector housing.

[0005] This locking element has the advantages of being able to be retrofitted onto the connector, meaning it doesn't need to be used under any circumstances and can be used to secure the electrical connector when needed. Furthermore, this design allows for easy placement. In particular, specific structural space can be preserved in the area surrounding the connector, such as the space below it. The locking element can then be more easily placed in areas with narrow structural spaces when using the electrical connector. The locking element can be a separate component, provided independently of the connector or the mating connector, for example, as an accessory. Through this securing element, the locking element can be fixed to the connector, especially its housing, and can be removed again when needed.

[0006] The plug connector may have a housing with a base-shaped area that protrudes relative to the mating area where the electrical mating contacts of the plug connector are located. A locking element may be provided in the base-shaped area in such a way that a frame with an internal opening snaps onto the base-shaped area of ​​the housing, or completely surrounds or encloses the base-shaped area.

[0007] The locking element may have at least one retaining element for securing the locking element to the plug connector. The locking element can be secured to the plug connector in different ways. For example, the internal opening of the frame may be designed such that the locking element is secured thereto by friction in the area of ​​the plug connector housing when it is snapped into place.

[0008] In this case, at least a portion of the inner wall of the frame surrounding the internal opening is used as a fixing element. It is also advantageously possible, additionally or alternatively, that the fixing element is configured to rotatably or pivotally support the locking element on the plug connector. For example, the fixing element on the locking element can be configured as a support pin and / or a support hole. On the plug connector, a fixing element configured as a mating element is provided, which is then correspondingly configured as a support hole or a support pin.

[0009] Overall, structural elements can be easily held in this manner by means of locking elements with simple and intuitive operation regarding locking and unlocking.

[0010] According to an advantageous design according to the invention, the first locking element is configured as a locking hook or a locking edge. This allows for a more advantageous implementation of the locking element with a robust locking mechanism. A locking hook then serves as a mating element on the mating connector, requiring a locking connecting plate or locking edge. Alternatively, the design of the first and second locking elements can be implemented in reverse, for example, by a second locking element configured as a locking hook and a first locking element configured as a locking connecting plate or locking edge. Multiple first locking elements and multiple second locking elements may also exist. The first locking elements may be configured similarly or differently.

[0011] According to an advantageous design of the invention, the frame has a first crossbar on the side facing the mating connector and a second crossbar on the side away from the mating connector, wherein the first and second crossbars are respectively connected to each other via side bars that are laterally guided beside the connector. Thus, the construction of the locking element remains simple. The side bars can be configured relatively narrow so that the width of the electrical connection device does not significantly increase when the locking element is engaged with the housing area of ​​the connector.

[0012] The frame can, for example, be configured as a closed annular frame that completely surrounds the internal opening on the circumferential side. The frame can also have an interruption, such that it does not completely surround the internal opening on the circumferential side. Therefore, the frame can be centrally opened in the region of the first crossbar, since the operating force is primarily transmitted to the lateral locking elements via the side bars. In the region of the second crossbar (handle element 5), the second crossbar varies in width via adapters (multi-piece construction) to match different pole numbers, the adapters being able to clamp in a form-fitting manner between the side bars. In this way, a universal locking element can be achieved.

[0013] In the top view of the frame, the internal openings can be, for example, square or rectangular in shape. In the top view, the side bars can be constructed to be significantly narrower than the first and / or second crossbars.

[0014] According to an advantageous design of the invention, at least one first locking element is disposed on the first crossbar. The first crossbar can therefore also be referred to as a locking bar. Therefore, advantageously, no additional components on the locking element are required to provide the first locking element.

[0015] According to an advantageous design of the invention, the locking element has a handle section for manually operating the locking element from a locked position to an unlocked position, in which a locking connection exists between first and second locking elements, and in the unlocked position, the locking connection between the first and second locking elements is released, thereby releasing the lock between the plug connector and the mating plug connector. The handle section allows for simple and intuitive operation of the locking element to unlock the initially locked plug connection. Intuitive operation is further achieved or improved by placing the handle section in an area of ​​the wire inlet opening, which is normally visible to the operator, making the handle section well-visible. The locking element is therefore not only well-visible to the operator, but also allows for simple and one-to-one operation.

[0016] According to an advantageous design of the invention, the handle section is disposed on the second crossbar or the second crossbar as a whole is configured as the handle section. The second crossbar can therefore also be referred to as the handle lever. Advantageously, therefore, no additional components on the locking element are required for the arrangement of the handle section.

[0017] According to an advantageous design of the invention, the handle section is positioned on the side of the wire introduction opening of the connector in both the unlocked and locked positions and does not intersect with the wire introduction opening during pivoting. In this manner, the function of the electrical connection device, and in particular the connector, is not hindered by the locking element in both the unlocked and locked positions. In particular, the wire introduction opening is accessible at all times. The electrical wires connected to the connector and introduced through the wire introduction opening are not hindered by the locking element and, in particular, the handle section. Furthermore, the pivoting movement of the locking element is not hindered by the electrical wires connected to the connector and introduced through the wire introduction opening. The locking element also does not hinder the use of the manual operating lever of the connector. The manual operating lever can, for example, be used to open and close the clamping portion of the connector, where the electrical wires can be clamped, for example by means of a spring force provided in the housing of the connector to clamp the terminals. Therefore, for example, the handle section can be positioned between the wire introduction opening of the connector and the manual operating lever of the connector in both the unlocked and locked positions.

[0018] According to an advantageous design of the invention, the plug-in connection device has at least one spring-return element by which the locking element is spring-loaded relative to a portion of the plug-in connection device toward the locked position. In this manner, the locking element is automatically held. To operate the locking element to the unlocked position, the force of the spring-return element must be manually overcome. If the manual operation of the locking element ends, the locking element can automatically return to the locked position via the spring-return element. The spring-return element may, for example, be supported on a housing section or edge of the plug-in connector or mating plug-in connector.

[0019] The spring return element can be made of plastic material, for example, as a flexible spring arm. Similarly, the locking element can be made of plastic material, for example, the same plastic material as the spring return element.

[0020] According to an advantageous design of the invention, the spring return element and the locking element, particularly their frame, are formed in one piece. This allows the spring return element to be simply supplied without a separate manufacturing step. Furthermore, the spring return element cannot be lost during the operation of the locking element. This also eliminates the need for separate installation of the spring return element, further simplifying the use and operation of the locking element.

[0021] Alternatively, the spring return element may also be part of the housing of the plug connector or mating plug connector, for example, it may be formed as a single piece with the housing of the plug connector or mating plug connector.

[0022] According to an advantageous design of the invention, at least one spring return element is disposed on the first crossbar, the second crossbar, and / or one or two side bars. Accordingly, no additional elements are required on the locking element for disposing the spring return element thereon. Rather, existing elements can be used. Multiple spring return elements may also be present on the locking element, and these spring return elements may be disposed on one or more of the elements mentioned above in the frame of the locking element.

[0023] According to an advantageous design of the invention, the locking element has a form-fitting retaining element for form-fittingly securing and / or supporting the locking element on the plug connector. This allows for reliable securing and / or pivoting support of the locking element on the plug connector. The risk of loss of the locking element is minimized in this manner. The form-fitting retaining element may, for example, be disposed on a frame, such as a first crossbar.

[0024] According to an advantageous design of the invention, the locking element is configured as a one-piece manufactured structural unit. This allows for the simple and low-cost manufacture of the locking element. For example, the locking element can be integrally configured as an injection-molded component.

[0025] The aforementioned objective is further achieved by a locking element of the type of electrical plug-in connection device described above, wherein the locking element has at least one fixing element for securing the locking element to the plug-in connector and at least one first locking element, the first locking element being designed to cooperate with a second locking element disposed on the mating plug-in connector, wherein the locking element has an annular closed frame with an internal opening, wherein the frame can be fastened to a region of the plug-in connector housing via the internal opening, such that, in the installed state, the region of the plug-in connector housing extends through the frame. Thus, the advantages described above can also be achieved. This locking element can be improved by means of one or more of the features and elements described above.

[0026] The locking element thus surrounds the housing of the plug connector in a ring. If an attempt is made to release the plug connector from the mating plug connector while it is in the locked position, the resulting pull is transmitted via the first locking element to the second crossbar through the side bar, which rests against the side of the plug connector opposite to the housing of the mating plug connector, or at least stops there after a short stroke. In this manner, the locking of the electrical plug connection is ensured.

[0027] In the context of this invention, the indefinite article "one" is not understood as a numeral. Therefore, if, for example, a component is mentioned, it is interpreted in the sense of "at least one component." If the angle is described in degrees, then it refers to a circle of 360 degrees (360°). Attached Figure Description

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] The attached diagram shows:

[0030] Figure 1 A perspective view of the locking element is shown, and

[0031] Figure 2 Showing according to Figure 1 A side view of the locking element, and

[0032] Figure 3 Showing according to Figure 1 A side cross-sectional view of the locking element, and

[0033] Figure 4 An electrical plug connector with locking elements in different positions is shown, and

[0034] Figure 5 A cross-sectional view of an electrical plug connector with a locking element is shown.

[0035] Figure 6A side view of an electrical plug-in connection device with a locking element in the unlocked position is shown.

[0036] Figure 7 Showing according to Figure 6 The plug-in connection device in the locked position, and

[0037] Figure 8 Showing according to Figure 6 A side cross-sectional view of the plug-in connector in the locked position, and

[0038] Figure 9 Showing according to Figure 7 A side cross-sectional view of the plug-in connection device in the unlocked position, and

[0039] Figure 10 A side view showing another embodiment of a plug-in connection device having a locking element in the locked position, and

[0040] Figure 11 The diagram shows a locking element in the unlocked position. Figure 10 The plug-in connection device, and

[0041] Figure 12-14 A perspective view showing another embodiment of the locking element, and

[0042] Figure 15 Showing according to Figure 14 A side cross-sectional view of the locking element, and

[0043] Figure 16 Showing according to Figure 14 Front view of the locking element, and

[0044] Figure 17 Showing according to Figure 16 A cross-sectional view of the locking element, and

[0045] Figure 18 Showing according to Figures 14 to 17 A cross-sectional view of the electrical connector for the locking element, and

[0046] Figure 19 Showing according to Figures 14 to 17 A side view of the electrical plug-in connection device of the locking element, and

[0047] Figure 20 Showing according to Figure 19 First lateral sectional view of the plug-in connection device, and

[0048] Figure 21 Showing according to Figure 19 The second lateral cross-sectional view of the plug-in connection device.

[0049] The reference numerals used in the figures have the following relationships:

[0050] 1. Plug connector

[0051] 2. Use with plug-in connectors

[0052] 3 Locking elements

[0053] 4. Interruption section

[0054] 5 Second crossbar

[0055] 6. Wire introduction opening

[0056] 7. Compatible parts

[0057] 8. Spring return element

[0058] 9 Fixed Sections

[0059] 10 First locking element

[0060] 11. Control lever

[0061] 12 First horizontal bar

[0062] 13 Side bars

[0063] 14 Internal openings

[0064] 15. Housing

[0065] 16. Base-shaped area

[0066] 17. Fixing elements

[0067] 18 Shell edges

[0068] 19. Empty Section

[0069] 20 Second locking element

[0070] 21 Locking section

[0071] 22 First locking element

[0072] 23 Second locking element

[0073] B Width direction Detailed Implementation

[0074] exist Figures 1 to 3The locking element 3 shown has an annular closed frame formed by a first crossbar 12, a second crossbar 5, and two side bars 13. The first crossbar 12 and the second crossbar 5 are connected at their lateral edges by one of the side bars 13. The annular closed frame formed in this manner has an internal opening 14, which in a top view is, for example, square or rectangular, or at least approximately square or rectangular, and may have rounded corner areas. For example, the side bars 13 may have a length longer than the first and second crossbars 5, 12, such that the locking element 3 has a smaller dimension along the width direction B than along the longitudinal direction of the side bars 13. The width direction B extends parallel to the longitudinal extensions of the first and second crossbars 5, 12 and correspondingly orthogonal to the longitudinal extensions of the side bars 13.

[0075] At least one first locking element 10, or in the illustrated embodiment, three locking elements 10, are provided on the first crossbar 12, each spaced apart from the others by gaps. At least one central locking element 10 is centrally located on the first crossbar 12. A spring return element 8, for example in the form of a plate extending from the first crossbar 12, is also provided on the first crossbar 12. The spring return element 8 is integrally formed with the first crossbar 12. For example, the spring return element can extend from the first crossbar 12 in the opposite direction to the first locking element 10. The second crossbar 5 forms a handle section for manually operating the locking element.

[0076] exist Figure 3 In the cross-sectional view, a fixing element 17 is also visible, used to fix the locking element 3 to the plug connector 1. The fixing element 17 is configured as a shape-fitting fixing element in the form of a rotating pin, which extends from the region of the first crossbar 12 along the width direction B.

[0077] Figure 4 A plug connector 1 with a locking element 3 fixed thereon is shown. The plug connector 1 is shown in a view of one side of its housing 15, on which a corresponding wire introduction opening 6 is provided for introducing electrical wires into the housing 15. The housing 15 has a base-shaped protruding region 16, onto which the locking element 3 is fastened via an internal opening 14 of a frame, such that the base-shaped protruding region 16 extends through the frame of the locking element 3. The internal dimensions of the internal opening 14, particularly the spacing between the side bars 13, are configured such that the side bars 13 abut against or are spaced apart from the outer side of the housing 15 or the base-shaped region 16 by a small tolerance.

[0078] Figure 4 The left side shows a plug connector 1 with a locking element 3 in a locked position, in which the locking connection between the plug connector 1 and the mating plug connector 2 is effective. Figure 4The right side shows a plug connector 1 with a locking element 3 in the unlocked position, in which the locking connection between the plug connector 1 and the mating plug connector 2 is released, thereby removing the lock. It can be seen that from the locked position to the unlocked position, the locking element 3 pivots downward toward the wire inlet opening 6, which is achieved by manually pressing down the second crossbar 5 via a handle section. Here, the handle section is positioned between the wire inlet opening 6 and the manual operating lever 11 in both the unlocked and locked positions. The manual operating lever is used to manually operate the spring-loaded clamping terminals in the plug connector 1. In particular, the wire inlet opening 6 is not covered by the handle section in any position of the locking element 3.

[0079] Figure 5 Showing through according to Figure 4 A cross-sectional view of the device. The cross-sectional plane extends vertically through the first crossbar 12 in the region of the fixing element 17. It can be seen that a plurality of fixing elements 17 are molded on the first crossbar 12, which respectively engage in the recesses 19 configured as mating parts in the housing 15 of the plug connector 1, thereby forming a rotational support for locking element 3.

[0080] The recess 19 can be configured as an elongated hole oriented along the insertion direction of the connector 1, allowing the pivot support to float by a certain amount along the insertion direction. The locking element can therefore be modified. The floating support provides additional advantages regarding tolerance compensation.

[0081] Figure 6 As shown in Figure 4 The described side view shows the plug connector 1 together with the mating plug connector 2 to which it is plugged. The locking element 3 is visible, in the locked position. The spring return element 8 rests against a region of the housing 15 of the plug connector 1 by a certain preload, for example, against a base-shaped region 16. In this state, the plug connector 1 is locked to the mating plug connector 2 via the locking element 3. The first locking element 10 is locked here with the second locking element 20 present on the mating plug connector 2.

[0082] Figure 7 Showing according to Figure 6 The device, in which locking element 3 is now moved to the unlocked position. Similar to... Figure 4 As can be seen, the handle element now moves downward or away from the manual operating lever 11 by means of the second crossbar 5. The locking between the first locking element 10 and the second locking element 20 of the mating connector 2 is here released. The locking element 3 here moves to the unlocked position against the restoring force of the spring return element 8, which is in Figure 7 The spring return element 8 can be used relative to the spring return element 8. Figure 6The state is deformed as shown and is identified by pressing against the housing 15 or the base-shaped area 16 with a higher clamping force than in the locked position.

[0083] Figure 8 and 9 Shown in Figure 6 and 7 The image shows a side cross-sectional view of the plug-in connection device. Figure 8 The locked position is also shown. Figure 9 Shows the unlock location. Figure 8 The first locking element 10 and the second locking element 20 are locked together, and the locking is based on... Figure 9 The locking element 3 is removed from the unlocked position. The mating connector 1 and the mating connector 2 can now be separated from each other. As soon as the handle section is released by the operator, the locking element 3 is moved to the position by the spring return force of the spring return element 8. Figure 8 or Figure 6 In the locked position. Figure 8 It can also be seen that the first locking element 10, which is configured as a locking hook, engages the locking edge of the second locking element from the rear.

[0084] Figure 10 An electrical plug-in connection device with a plug connector 1, a mating plug connector 2, and a locking element 3 is shown. The locking element 3 is modified from the embodiment described above as follows: in this case, the spring return element 8 is not provided on the crossbar 12, but rather on one or both side bars 13 respectively. The spring return element 8 can be configured as a spring arm, as shown, which... Figure 10 In the locked position shown, the spring return element 8 extends forward from the side plate 13 at an angle, essentially in a straight line. The spring return element 8 interacts with a portion of the housing 15, for example, with a lateral housing edge 18 on which the spring return element 8 is supported. If the locking element 3 now moves to the unlocked position, this... Figure 11 As shown, the spring return element 8 is deformed into a bent shape, wherein the return force generated by the spring return element is increased. The spring return element 8 is based on... Figure 11 The view, in addition, works in conjunction with the housing edge 18 to form a stop for limiting the adjustment path of the locking element 3. Here, the free end of the spring return element 8 abuts against the side of the side plate 13 facing the spring return element 8, while the spring return element 8 abuts against the housing edge 18 in the region between the root and the free end.

[0085] The embodiments described so far each have a locking element 3 with a ring-shaped closed frame that completely (uninterruptedly) surrounds the internal opening 14 on the circumferential side, while Figure 12An embodiment is shown in which at least one interruption 4 exists in the annular structure of the frame. For example, the frame may be interrupted in the region of the first crossbar 12 by the interruption 4, wherein the interruption 4 may interrupt the first crossbar 12 centrally, for example. Thus, mechanical durability and the transmittable force are not reduced or only slightly reduced, because the force is transmitted substantially via the side bars 13.

[0086] Figure 13 One embodiment of the locking element 3 is shown, wherein the second crossbar 5 also has an interruption portion, which in this case is bridged by an adapter. In this manner, the second crossbar 5 is constructed in multiple parts. The width of the locking element 3 can be changed by inserting a matching adapter 7 and, for example, to match different sizes of plug connectors. The adapter 7 can clamp onto two end-shaped portions of the second crossbar 5 extending from the side bar 13.

[0087] Figures 14 to 17 Another embodiment of the locking element 3 with a ring-shaped closed frame is shown. Instead of a spring return element provided on the first crossbar 12, a spring return element 8 is provided on each side bar 13 in this embodiment. It is also possible to provide such a spring return element 8 on only one side bar 13. The spring return element 8 is similar to... Figure 10 and 11 In one embodiment, the branch extends from the corresponding side rod 13 in a forward direction from the operating side of the plug connector 1, i.e., the side where the operating rod 11 is provided. Figure 10 and 11 In this embodiment, the spring return element branches at a location on the side rod 13 that is closer to the second crossbar 5 than the first crossbar 12, and correspondingly extends towards the first crossbar 12 from said branch location. Figures 14 to 17 In the embodiment, the spring return element 8 is arranged in the opposite manner. The spring return element 8 branches off at a location on the side bar 13 that is closer to the first crossbar 12 than the second crossbar 5. From there, the spring return element 8 extends in the form of a spring arm toward the side of the locking element 3 where the second crossbar 5 is located.

[0088] exist Figures 14 to 17In the embodiment shown, the corresponding spring return element 8 has an arcuate or bent portion, wherein the extending direction of the spring return element 8 changes upward, i.e., the spring return element 8 transitions into a locking section 21 extending substantially perpendicular to the longitudinal extension of the corresponding side rod 13, the locking section extending toward the corresponding side rod 13. A first locking element 22, for example in the form of a protruding pin, is provided near its free end on the corresponding locking section 21. The first locking element 22 is used to establish a form-fitting connection with a second locking element 23, which is formed on the housing 15 of the plug connector 1, as further described below.

[0089] The spring return element 8 does not necessarily have to be configured to have an angled or bent region and a locking section 21 extending in other directions. The spring return element 8 may also terminate at or before the bent portion. In this case, the first locking element 22 is provided in the region of the subsequently existing free end of the spring return element 8.

[0090] As can also be seen, the first locking elements 22 are respectively disposed on the side of the spring return element 8 facing the inner opening 14. The spring return element 8, under no-load conditions, such as in... Figures 14 to 17 It bends slightly toward the inner opening 14 as shown in the diagram. In this manner, the spring arm 8 can be locked onto the housing 15 of the plug connector 1 with a certain preload.

[0091] Furthermore, it can be seen that each locking section 21 is provided with a shoulder 24, which can contact the side of the side rod 13 facing the spring return element 8 in the offset position, thereby limiting the offset of the locking element 3. In this embodiment, the shoulder 24 is respectively provided on the opposite sides of the respective locking sections 21.

[0092] Furthermore, it can be seen that in Figure 14 In this embodiment, the fixing element 17 is arranged slightly further away from the first crossbar 12, for example, on the fixing section 9 extending forward from the side bar 13, such as also by means of Figure 15 As further evidenced.

[0093] Figure 18 Showing according to Figures 14 to 17 The locking element 3 is connected to the plug connector 1. The locking element 3 is partially cut open on the left and right sides in different cross-sectional planes. The cross-section in the left area shows the locking element 3 being secured to the housing 15 by means of a fixing element 17, which engages in the recess 19 of the housing 15. In this manner, the locking element 3 is pivotally fixed to the plug connector 1 on both sides about a rotation axis.

[0094] Through Figure 18 The cross-sectional view in the right-hand region shows the locking of the corresponding spring element 8 on the housing 15. A locking section 21 with a first locking element 22 is visible, which is form-fitted to a second locking element 23 on the housing 15. In the illustrated drawing, the first locking element 22 is configured as a protruding pin, and correspondingly, the second locking element 23 is configured as a corresponding recess on the housing 15. This association can also be reversed, for example, with a protruding pin on the housing 15 and a recess on the locking section 21 into which the pin of the housing 15 engages.

[0095] according to Figure 19 The side view shows the installation of the locking element 3 on the plug-in connection device consisting of the plug-in connector 1 and the mating plug-in connector 2. In particular, it can be seen that the locking element 3 is fixed via the fixing section 9 and the recess 19.

[0096] Figure 20 The position of the locking section 21 on the plug connector 1 is shown in the first cross-section.

[0097] according to Figure 21 As can be seen, the first locking element 22 is connected to the second locking element 23 in a shape-fitting manner.

Claims

1. An electrical plug connection device having a plug connector (1) and a mating plug connector (2) and having a locking element (3) by means of which the plug connector (1) can be locked on the mating plug connector (2), wherein the locking element (3) is fixed on the plug connector (1) and has at least one first locking element (10) which is designed to lock with a second locking element (20) provided on the mating plug connector (2), wherein by locking of the first locking element (10) with the second locking element (20) the plug connector (1) can be locked on the mating plug connector (2) by means of the locking element (3), characterized in that the locking element (3) has a frame (5, 12, 13) which has an inner opening (14), wherein the locking element is a separate component and the frame (5, 12, 13) can be clipped onto the area of a housing (15) of the plug connector (1) by means of the inner opening (14) such that in the installed state the area of the housing (15) of the plug connector (1) protrudes through the frame (5, 12, 13).

2. An electrical plug connection device having a plug connector (1) and a mating plug connector (2) and having a locking element (3) by means of which the plug connector (1) can be locked on the mating plug connector (2), wherein the locking element (3) is fixed on the plug connector (1) and has at least one first locking element (10) which is designed to lock with a second locking element (20) provided on the mating plug connector (2), wherein by locking of the first locking element (10) with the second locking element (20) the plug connector (1) can be locked on the mating plug connector (2) by means of the locking element (3), characterized in that the locking element (3) has a frame (5, 12, 13) which has an inner opening (14) such that in the installed state the area of the housing (15) of the plug connector (1) protrudes through the frame (5, 12, 13), wherein the electrical plug connection device has at least one spring return element (8) by means of which the locking element (3) is spring-loaded towards a locking position relative to a part of the electrical plug connection device.

3. The electrical plug connection device according to claim 1 or 2, characterized in that the first locking element (10) is designed as a locking hook or a locking edge.

4. The electrical plug connection device according to claim 1 or 2, characterized in that the locking element (3) has at least one fixing element (17) for fixing the locking element (3) on the plug connector (1).

5. The electrical plug connection device according to claim 1 or 2, characterized in that the locking element (3) has a ring-closed frame (5, 12, 13).

6. Electrical plug connection arrangement according to claim 1 or 2, characterized in that the frame (5, 12, 13) has a first crossbar (12) on the side facing towards the mating plug connector (2) and a second crossbar (5) on the side facing away from the mating plug connector (2), wherein the first and second crossbars (12, 5) are connected to one another via side bars (13) which are guided laterally alongside the plug connector (1).

7. Electrical plug connection arrangement according to claim 6, characterized in that at least one of the first locking elements (10) is arranged on the first crossbar (12).

8. Electrical plug connection arrangement according to claim 6, characterized in that the locking element (3) has a handle section for manually operating the locking element (3) from a locked position, in which a locking connection exists between the first and second locking elements (10, 20), into an unlocked position, in which the locking connection between the first and second locking elements (10, 20) is eliminated, and thus the locking of the plug connector (1) with the mating plug connector (2) is eliminated.

9. Electrical plug connection arrangement according to claim 8, characterized in that the handle section is arranged on the second crossbar (5) or the second crossbar (5) is formed integrally as a handle section.

10. Electrical plug connection arrangement according to claim 8, characterized in that the handle section is arranged on the side of the plug connector (1) of a lead introduction opening (6) not only in the unlocked position but also in the locked position and does not intersect the lead introduction opening (6) during the pivoting movement.

11. Electrical plug connection arrangement according to claim 1, characterized in that the electrical plug connection arrangement has at least one spring return element (8) by means of which the locking element (3) is spring-loaded relative to a part of the electrical plug connection arrangement towards the locked position.

12. Electrical plug connection arrangement according to claim 2 or 11, characterized in that the spring return element (8) is formed in one piece with the locking element (3).

13. Electrical plug connection arrangement according to claim 6, characterized in that at least one spring return element (8) of the electrical plug connection arrangement is arranged on the first crossbar (12), the second crossbar (5) and / or one or both side bars (13), by means of which the locking element (3) is spring-loaded relative to a part of the electrical plug connection arrangement towards the locked position.

14. Electrical plug connection arrangement according to claim 1 or 2, characterized in that the locking element (3) has a form-fitting securing element (17) for form-fitting securing and / or supporting the locking element (3) on the plug connector (1).

15. Electrical plug connection arrangement according to claim 1 or 2, characterized in that ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The locking element (3) is configured as a one-piece structural unit.

16. An electrical plug connection arrangement according to claim 12, characterized in that The spring return element (8) is formed in one piece with the frame (5, 12, 13) of the locking element (3).

17. A locking element (3) of an electrical plug connection arrangement according to any one of claims 1 to 16, wherein the locking element (3) has at least one securing element (17) for securing the locking element (3) on the plug connector (1) and at least one first locking element (10) which is designed to cooperate with a second locking element (20) provided on the mating plug connector (2), characterized in that The locking element (3) has a frame (5, 12, 13) with an internal opening (14), wherein the locking element is a separate component and the frame (5, 12, 13) can be snapped onto the region of the housing (15) of the plug connector (1) by means of the internal opening (14) such that, in the installed state, the region of the housing (15) of the plug connector (1) protrudes through the frame (5, 12, 13).

18. A locking element (3) of an electrical plug connection arrangement according to any one of claims 1 to 16, wherein the locking element (3) has at least one securing element (17) for securing the locking element (3) on the plug connector (1) and at least one first locking element (10) which is designed to cooperate with a second locking element (20) provided on the mating plug connector (2), characterized in that The locking element (3) has a frame (5, 12, 13) with an internal opening (14), wherein the frame (5, 12, 13) can be snapped onto the region of the housing (15) of the plug connector (1) by means of the internal opening (14) such that, in the installed state, the region of the housing (15) of the plug connector (1) protrudes through the frame (5, 12, 13), wherein the electrical plug connection arrangement has at least one spring return element (8) by means of which the locking element (3) is spring-loaded towards a locking position relative to a part of the electrical plug connection arrangement.

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