Plug-in protective earthing plate, plug-in insert, and method for assembling same

Abstract

The invention relates to a plug-in protective earthing plate (1, 1") for a plug-in insert (100, 100"), wherein the plug-in protective earthing plate (1, 1") has a flat plate section (11, 11"), a contact arm (12, 12") for electrically contacting an associated plug-in protective earthing plate (T, 1"'), and two latching arms (13, 13") for latching with corresponding latching hooks (51, 51") of the plug-in insert (100, 100"), characterised in that the plug-in protective earthing plate (1, 1") also comprises a retaining section (14, 14") and a contacting section (15, 15") which are formed on the flat plate section (11, 11"), wherein the retaining section (14, 14") is designed to reversibly retain a clamping spring (2, 2"), and the contacting section (15, 15") is in the form of a busbar in order to electrically contact and connect to a protective conductor. The invention also relates to a plug-in insert and to a method for assembling a plug-in insert.

Description

[0001] TECHNICAL AREA

[0002] The present invention is based on a pluggable protective conductor plate for a plug-in insert of an industrial connector. The present invention further relates to a plug-in insert of a pluggable protective earthing plate and a method for assembling a plug-in insert.

[0003] STATE OF THE ART

[0004] In previously known solutions, a screw terminal is used as the protective conductor connection on an earthing element, where the protective conductor is attached to the earthing element using a screwdriver. Over time, such screws can loosen due to vibrations, causing the protective conductor to lose its function. Therefore, a so-called "push-in" technique has gradually been developed, in which the stripped ends of the conductor wires (protective conductor) are manually connected to a busbar. This technique reduces installation time, allows for tool-free wiring, is easy to use, and is suitable for both stranded and solid conductors.For example, WO 2020 / 164664 discloses a protective conductor connection for connecting a protective conductor to a busbar of an earthing element, wherein the earthing element comprises a mounting area for its mounting on a wall of an insulating body, wherein a contact connection for the protective conductor with the busbar is closed by means of a spring element and an actuating element provided in the mounting area, and wherein the earthing element is further provided with a housing half-shell designed to be assembled with the earthing element to form a common housing. However, the construction of the protective conductor connection is relatively complex.

[0005] CONTENT OF THE PRESENT INVENTION

[0006] Therefore, the object of the present invention is to provide a pluggable protective earthing plate with a simple structure and low manufacturing costs, with which a protective conductor, i.e., a protective earthing cable, can be easily attached and removed; and to provide a plug-in insert which, by means of a retaining plate pre-assembled with an actuator, enables compatible assembly of a new pluggable protective earthing plate with an insulator. The design of the present invention allows for a quick connection of a hard / soft protective conductor using common tools.

[0007] According to one aspect of the present invention, a pluggable protective earthing plate is provided for a plug-in insert, wherein the pluggable protective earthing plate comprises a flat plate section, a contact arm for electrical contact with an associated pluggable protective earthing plate, and two locking arms for locking with corresponding locking hooks of the plug-in insert, wherein the pluggable protective earthing plate further comprises a retaining section and a contacting section which are integrally formed on the flat plate section, wherein the retaining section is designed for reversibly holding a clamping spring and the contacting section (15, 15") is designed as a busbar to electrically contact and connect a protective conductor.

[0008] In a specific embodiment, the retaining section comprises a retaining wall with a notch, two mutually parallel guide walls on both sides of the retaining wall, and a stop arranged below the notch and perpendicular to the retaining wall. Preferably, the retaining wall is formed integrally with the guide wall. In a specific embodiment, the retaining wall and the two guide walls form a retaining-guide space for holding / guiding the clamping spring, wherein the reversible retention of the clamping spring on the retaining section is achieved by an inner upper edge of the notch bearing against a tongue of a retaining leg of the clamping spring and the stop bearing against a free end of the retaining leg.The two guide walls and the retaining wall limit movement of the retaining leg of the clamping spring perpendicular to the insertion direction, while the inner upper edge of the notch and the stop limit movement of the retaining leg of the clamping spring along / against the insertion direction, thereby holding or fixing the clamping spring, in particular its retaining leg, to the retaining section.

[0009] In one specific embodiment, the contact section has an L-shaped cross-section and comprises a first wall and a second wall that are at right angles to each other. The first wall is positioned opposite the retaining wall. The second wall faces away from the retaining section. The clamping leg of the clamping spring presses against the first wall. When the protective conductor is inserted, the clamping leg can press the protective conductor against the first wall. In other embodiments, the contact section can be configured as a single wall.

[0010] In a specific embodiment, the retaining section is designed in a cantilevered form and comprises an angled section integrally formed on one side of the flat plate section and extending perpendicular to the flat plate section, as well as a retaining segment extending parallel to the flat plate section on the other side, wherein the retaining segment has a U-shaped retaining recess. In a specific embodiment, the flat plate section has a U-shaped opening aligned with the retaining recess and an inclined area arranged adjacent to the U-shaped opening.

[0011] In a specific embodiment, the retaining recess and the U-shaped opening form a retaining guide space for holding / guiding the clamping spring, wherein the clamping spring comprises a retaining leg having at its end an extension section and shoulders arranged on both sides of the extension section, and comprising a tongue at its rear, wherein the retaining recess is designed to hold the retaining leg and the U-shaped opening is designed to hold the extension section.

[0012] In one embodiment, an upper limit of movement of the clamping spring in the holding section is achieved by a contact of a surface of the retaining segment facing the flat plate section against the tongue, while a lower limit of movement of the clamping spring in the holding section is achieved by a contact of the shoulder of the retaining leg against a surface of the flat plate section on both sides of the U-shaped opening.

[0013] In one embodiment, the contacting section has an L-shaped cross-section and comprises a first wall and a second wall arranged at right angles to each other, the second wall pointing away from the holding section, the clamping spring further comprising a clamping leg inclined relative to the holding leg, the free end of which can rest against the first wall to create a boundary of the clamping spring between the holding section and the contacting section.

[0014] In one embodiment, the inclined section is designed as a support for the retaining leg to prevent the retaining leg from tilting towards the contact section. The inclined section has a through-opening and support sections arranged on both sides of the through-opening to support the retaining leg. Providing the through-opening increases the strength of the manufacturing process of the plug-in protective earthing plate.

[0015] In one embodiment, the pluggable protective earthing plate is an associated pluggable protective earthing plate and has a projection on a rear side of the contact arm.

[0016] According to a further aspect of the present invention, a plug-in insert is provided comprising: a female insert and a male insert, wherein the female insert comprises a female insulator, the female insulator having a plurality of female contact chambers, each for receiving a pluggable female contact unit; a female retaining plate, which is attached to the female insulator on the cable connection side of the female insulator, wherein the male insert comprises a male insulator, the male insulator having a plurality of male contact chambers, each for receiving a pluggable male contact unit;A male retaining plate, which is attached to the male insulator on the cable connection side of the male insulator, wherein the insert further comprises a pluggable protective earthing plate on each of the two narrow sides of the female insulator and a corresponding pluggable protective earthing plate on each of the two narrow sides of the male insulator. In a preferred embodiment, the pluggable protective earthing plate is a female pluggable protective earthing plate, while the corresponding pluggable protective earthing plate is a male pluggable protective earthing plate.

[0017] In a specific embodiment, the female retaining plate has on each of its narrow sides a receiving section for receiving the retaining section and the contacting section of the pluggable protective earthing plate, as well as the clamping spring and an actuator.

[0018] In a specific embodiment, the receiving section has an actuating opening and a connecting opening connected to the actuating opening, wherein an interior of the receiving section is a receiving chamber, wherein an inner wall of the receiving chamber has two opposing first stage sections and two opposing second stage sections.

[0019] In a specific embodiment, the actuator comprises a holding element with an effective surface and an actuating section, wherein the actuating section has two actuating arms extending in an actuating direction and an actuating web connecting the two actuating arms at their ends, with a reinforcing rib being integrally formed on the outside of each of the two actuating arms. The provision of the reinforcing ribs gives the actuator high stability.

[0020] In one embodiment, a tool, for example a screwdriver, can act on the actuator's working surface via the actuating opening, with the connecting opening being used to insert the protective conductor into the receiving section. Preferably, the actuating opening is a rectangular opening and adapted to the shape of the actuator's working surface, while the connecting opening is a circular opening and adapted to the shape / diameter of the cross-section of the protective conductor.

[0021] In a specific embodiment, the actuating section is guided between the two first stage sections, with the reinforcing rib moving in the area of ​​the corresponding second stage section. In a preferred embodiment, the actuating arm and the actuating bridge each slide on corresponding edges of the first stage section to prevent the actuating element from pivoting perpendicular to the direction of actuation.

[0022] Preferably, a stopper is formed on a wall facing the respective actuating arm of one of the first stage sections (e.g., the outer first stage section) which prevents the actuator from falling out of the receiving chamber.

[0023] Preferably, there is a gap between each of the second step sections and the corresponding reinforcing rib.

[0024] In a specific embodiment, the female insulator is provided on each of its narrow sides with a housing section for receiving the contact arm of the pluggable protective earthing plate and the locking hooks, and on each of its wide sides with locking lugs for locking with locking windows of the female retaining plate.

[0025] In a specific embodiment, the plug-in insert further comprises an associated pluggable protective earthing plate, which is arranged on each of the two sides of the male insulator.

[0026] In a specific embodiment, the receiving section has an actuating opening and a connecting opening connected to the actuating opening on its cable connection side. An interior space of the receiving section is a receiving chamber comprising a contact section receiving area for receiving the contact section and a retaining section receiving area for receiving the retaining section. The contact section receiving area is L-shaped, and the retaining section receiving area also receives the actuator and the clamping spring in addition to the retaining section. In a preferred embodiment, the shape of the contact section receiving area is adapted to that of the contact section of the pluggable protective earthing plate, and the contact section receiving area preferably has a base.

[0027] In a specific embodiment, the holding section / receiving area comprises a pair of opposing first walls, a pair of opposing second walls, and a pair of opposing third walls, wherein the distance between the first walls is greater than the distance between the second walls, and wherein a stop is arranged on one of the second walls and a post is arranged on each of the second walls. In a preferred embodiment, the distance between the second walls is greater than the distance between the third walls. Preferably, the upper part of the post is designed as a chamfer.

[0028] In a specific embodiment, the actuator is hollow and comprises a retaining part with an effective surface and an actuating section, wherein the actuating section has two actuating arms extending in the direction of actuation and an actuating web connecting the two actuating arms at their ends, wherein a reinforcing rib is formed on the outside of each of the two actuating arms, wherein the reinforcing ribs are guided and movable between the first walls, wherein the actuating arms are guided and movable between the second walls, are moved over a stop until a chamfer arranged on the actuating web abuts a chamfer on the post, wherein the post provides an upper boundary of the actuator in the receiving section and the stop provides a lower boundary of the actuator in the receiving section.

[0029] In a specific embodiment, the receiving section further comprises a misoperation protection feature that interacts with a corresponding misoperation protection feature of the female insulator. In a specific embodiment, the receiving section of the male retaining plate also comprises a misoperation protection feature that interacts with a corresponding misoperation protection feature of the male insulator. Preferably, the misoperation protection feature of the female retaining plate differs from the misoperation protection feature of the male retaining plate to prevent incorrect assembly.

[0030] In one specific embodiment, the space between the third walls corresponds to the connecting opening. In another specific embodiment, the space between the third walls is used to receive the clamping leg of the clamping spring.

[0031] According to another aspect of the present invention, a method for assembling a plug-in insert is provided, comprising the following steps:

[0032] A. An actuator is pre-installed in a receiving chamber of a receiving section of the female retaining plate,

[0033] B. the pluggable protective earthing plate is mounted on the female insulator, the clamping spring being reversibly held on the retaining section of the pluggable protective earthing plate; and at the same time the pluggable female contact unit is inserted into its corresponding female contact chamber;

[0034] C. The female retaining plate is mounted on the female insulator from one cable connection side;

[0035] D. Steps AC are performed for a male retaining plate, a male insulator and an associated pluggable protective earthing plate;

[0036] E. the female insulator and the male insulator are plugged together to form the plug-in insert.

[0037] In a specific embodiment, it is provided that the contact arm of the pluggable protective earthing plate and the contact arm of the associated pluggable protective earthing plate are in contact with each other before contacting the pluggable female contact unit and the pluggable male contact unit, and are separated from each other after disconnection of the pluggable female contact unit and the pluggable male contact unit, thereby providing earthing protection.

[0038] In a specific embodiment, a tool is designed as a three-legged tweezer, wherein a centrally arranged second leg is a straight leg and, on either side of it, a first leg and a third leg are each formed with a hook. The tool is inserted into the actuating opening of the receiving section of the female retaining plate from the side of the cable connection. The second leg presses an actuator, the hook of which engages on the inner wall of the receiving section to position the actuator. This leaves the hands free to insert the protective conductor into the connection opening while the tool positions the actuator in the receiving section, thus simplifying manual operation and making it user-friendly.

[0039] BRIEF DESCRIPTION OF THE DRAWING

[0040] Exemplary embodiments of the present invention are illustrated in the drawings and explained in more detail below. In the drawings:

[0041] Fig. 1 shows a perspective view of a pluggable protective earthing plate with a clamping spring according to an embodiment of the present invention;

[0042] Fig. 2 shows a perspective view of the pluggable protective earthing plate from a further angle according to an embodiment of the present invention;

[0043] Fig. 3 shows a perspective view of the plug-in protective earthing plate with an actuator according to an embodiment of the present invention; Fig. 4 shows a perspective view of an associated plug-in protective earthing plate with a clamping spring according to an embodiment of the present invention;

[0044] Fig. 5 shows a perspective view of an insert according to an embodiment of the present invention;

[0045] Fig. 6 shows an exploded view of the insert according to an embodiment of the present invention;

[0046] Fig. 7 shows a perspective view of an actuator according to an embodiment of the present invention;

[0047] Fig. 8 shows a perspective view of the actuator from a further angle according to an embodiment of the present invention;

[0048] Fig. 9 shows a top view of a retaining plate of the insert according to an embodiment of the present invention;

[0049] Fig. 10 shows a bottom view of the retaining plate from Fig. 9;

[0050] Fig. 11 shows an assembly drawing of a female retaining plate and a female insulator of a plug-in insert and a pluggable protective earthing plate according to an embodiment of the present invention;

[0051] Fig. 12 shows a perspective view of an insert according to a further embodiment of the present invention;

[0052] Fig. 13 shows a perspective view of a pluggable protective earthing plate according to a further embodiment of the present invention;

[0053] Fig. 14 shows a perspective view of the pluggable protective earthing plate shown in Fig. 13 from a different angle;

[0054] Fig. 15 shows a perspective view of an associated pluggable protective earthing plate according to a further embodiment of the present invention;

[0055] Fig. 16 shows the pluggable protective earthing plate from Fig. 3 with a clamping spring and an actuating mechanism. Fig. 17 shows the clamping spring from Fig. 16;

[0056] Fig. 18 shows the actuator from Fig. 16;

[0057] Fig. 19 shows an insert according to a further embodiment of the present invention;

[0058] Fig. 20 shows a female insertion of the insert from Fig. 19;

[0059] Fig. 21 shows a male insert of the plug-in insert from Fig. 19;

[0060] Fig. 22 shows a female retaining plate of the female insert from Fig.

[0061] 20;

[0062] Fig. 23 shows a receiving section of the female retaining plate from Fig. 22;

[0063] Fig. 24 shows the receiving section from Fig. 23, equipped with an actuator;

[0064] Fig. 25 shows a female insulator of the female insert from Fig. 20;

[0065] Fig. 26 shows a male retaining plate of the male insert from Fig. 21;

[0066] Fig. 27 shows a male insulator of the male insert from Fig. 21;

[0067] Fig. 28 shows a sectional view of a narrow side of the insert from Fig. 19;

[0068] Fig. 29 shows the plug-in insert from Fig. 19, which is not fully assembled and does not have female and male insulators; and

[0069] Fig. 30 shows a schematic view in which a tool is operated on the insert.

[0070] The drawings include schematic views, some of which are simplified. In some cases, the same reference symbols are used for similar, but possibly not identical, elements. Different views of the same element may be scaled differently. DETAILED DESCRIPTION

[0071] Figures 1 and 2 each show a perspective view of a pluggable protective earthing plate 1, in particular a female pluggable protective earthing plate, according to an embodiment of the present invention. The pluggable protective earthing plate 1 is designed for connection to a protective conductor (not shown) and is manufactured from sheet metal by punching and bending. In other embodiments, it can also be manufactured by zinc die casting or by milling from a solid material. The pluggable protective earthing plate 1 comprises: a flat plate section 11, in which two screw holes are provided and which is used to establish an electrical contact with a connector housing; a contact arm 12, which is used to establish an electrical contact with an associated pluggable protective earthing plate 1' (Fig.4), i.e., a male pluggable protective earthing plate, wherein in particular the contact arm 12 is in electrical contact with a contact arm 12' of the associated pluggable protective earthing plate 1'; two locking arms 13, each used for locking with a locking hook 51 (Fig. 5) of an insert 100 to position the pluggable protective earthing plate on the insert; and a retaining section 14 and a contacting section 15, which are integrally formed on the flat plate section. The retaining section 14 comprises a retaining wall 141 with a notch 144, guide walls 142 running parallel to each other, which are arranged on both sides of the retaining wall 141, and a stop 143, which is arranged below the notch 144 and perpendicular to the retaining wall 144. The retaining wall 141 and the two guide walls 142 are preferably integrally formed and form a retaining-guide space for holding / guiding a clamping spring 2.The clamping spring 2 is essentially V-shaped. It has a retaining leg 21 and a clamping leg 22, which are connected to each other via a spring bending section 23. A retaining device, namely a tongue 24, is arranged on the retaining leg 21. During assembly, the clamping spring 2 is inserted from above into the retaining guide space as shown in Fig. 1. Preferably, the retaining legs 21 of the clamping spring are guided on both sides by the two guide walls 142. The width of the retaining legs is preferably slightly less than or equal to the distance between the two guide walls to prevent the clamping spring from wobbling perpendicular to the insertion direction.The clamping spring 2 continues to move in the retaining guide space in the insertion direction (downwards in Figure 1) until the tongue 24 abuts an inner upper edge of the notch 144 and a free end of the retaining leg abuts a stop 143 at the bottom, thus preventing up-and-down movement of the clamping spring. Finally, the clamping spring is reversibly held in the retaining section to facilitate assembly / replacement. The contacting section 15 has an L-shaped cross-section and comprises a first wall 151 and a second wall 152, which are at right angles to each other. The first wall 151 is positioned opposite the retaining wall 141. The second wall 152 faces away from the retaining section 14 to avoid obstructing the space between the retaining wall 141 and the first wall 152. In other embodiments, the contacting section may also consist of only a single wall.When the clamping spring 2 is reversibly held in the retaining section 14, the free end of the clamping leg 22 of the clamping spring is pressed against the first wall 151. As soon as a protective conductor, for example a rigid conductor, is inserted in the insertion direction between the first wall 151 and the clamping leg 22, this protective conductor is pressed against the first wall 151 by means of the clamping leg 22 and is thus electrically conductively connected to it and mechanically held, i.e. clamped to it, and can no longer be easily pulled out against the insertion direction.

[0072] The function of the actuator 3 is now described in conjunction with Figure 3. If the protective conductor is, for example, a stranded wire (i.e., a soft conductor) of a cable, the clamping leg 22 must be separated from the first wall 151 by means of the actuator 3 in order to insert the protective conductor between them. Alternatively, for example, if the protective conductor clamped between the clamping leg 22 and the first wall 151 needs to be pulled out, it is necessary to disconnect the clamping leg 22 from the protective conductor by means of the actuator 3 to facilitate the removal of the protective conductor.

[0073] Specifically, Figures 7 and 8 show views of the actuator from different angles. The actuator 3 comprises a holding part 32 with an active surface 31 and an actuating section 33, the active surface 31 being used to hold a tool (not shown), for example, a screwdriver. The actuating section 33 has two flat, opposing actuating arms 34, which are connected at their ends by an actuating bridge 35. A receiving opening 37 remains between the actuating arms 34. To increase stability, a reinforcing rib 36 is formed on the outside of each of the two actuating arms 34 of the actuator 3.

[0074] First, as shown in Figure 3, the spring-bent section 23 of the clamping spring 2 is partially inserted into the receiving opening 37 of the actuator 3. When the tool acts on the working surface 31 of the actuator 3, the actuator 3 moves downwards in the insertion direction, and the clamping leg 22 of the clamping spring 2 is pivoted away from the first wall 151 of the contacting section 15 by the action of the actuating bridge 35, creating a gap between the clamping leg 22 and the first wall 151 for the insertion of a soft conductor. The tool then ceases to act on the working surface 31, and the clamping leg 22 is pivoted towards the first wall 151 by the spring force of the clamping spring 3 itself, pressing the inserted conductor against the first wall 151. Figure 4 shows an associated pluggable protective earthing plate 1', i.e., a male pluggable protective earthing plate.The construction of the associated pluggable protective earthing plate 1' is essentially the same as that of the pluggable protective earthing plate, with the exception of the contact arm 12'. Therefore, it will not be described again.

[0075] Figures 5 and 6 show a perspective view and an exploded view, respectively, of a plug-in insert 100 according to an embodiment of the present invention. In Figure 6, the plug-in insert 100 comprises, from top to bottom, a female retaining plate 4, several pluggable female contact units 6, a pluggable protective earthing plate 1, a female insulator 5, a male insulator 5', several pluggable male contact units 6', an associated pluggable protective earthing plate 1', and a male retaining plate 4'. The female retaining plate, the pluggable female contact unit, the pluggable protective earthing plate, and the female insulator form a female insert, while the male retaining plate, the pluggable male contact unit, the associated pluggable protective earthing plate, and the male insulator form a male insert.

[0076] The female insulator 5 is manufactured in one piece from plastic and has a cable-connection-side connection area 55 and a plug-side plug-in area 56, wherein several female contact chambers 53 are arranged in the connection area 55 (Figure 11). The connection area has two narrow side walls and two wide side walls. Two locking hooks 51 are molded onto each of the two narrow side walls, and several locking lugs 54 are molded onto each of the two wide side walls. A housing section 52 is molded onto each of the two narrow side walls of the plug-in area (Figure 11). The pluggable female contact unit 6 has an actuator, a clamping spring, a cage-shaped busbar, and a female contact. The female retaining plate 4 has two narrow sides and two wide sides. A receiving section 41 is provided on each of the two narrow sides, and a plurality of locking windows 47 are provided on each of the two wide sides.Figures 9 and 10 show a top and bottom view, respectively, of the female retaining plate. As shown in Figure 9, the receiving section 41 has an actuating opening 42 and a connecting opening 43 connected to the actuating opening. The actuating opening 42 is a rectangular opening, in which the actuator is recessed and can act on the operating surface 31 of the actuator on the cable connection side, for example, with a screwdriver. The connecting opening 43 is a circular opening through which the protective conductor can be inserted in the insertion direction, i.e., from top to bottom in the figure, to make contact with the contacting section 15 of the pluggable protective earthing plate, which serves as a busbar. As shown in Figure 9, the connecting opening 43 is a circular opening through which the protective conductor can be inserted in the insertion direction, i.e., from top to bottom in the figure, to make contact with the contacting section 15 of the pluggable protective earthing plate, which serves as a busbar.As shown in Figure 10, the interior of the receiving section is a receiving chamber, which is roughly divided into a first section for receiving an actuator, a second section for receiving the L-shaped contacting section 15, and a third section corresponding to the connecting opening 43. The first section has two opposing first stage sections 44 and two opposing second stage sections 45. The distance between the two first stage sections 44 is smaller than the distance between the two second stage sections 45. The actuating section 33 is guided between the two first stage sections 44, with the width between the two actuating arms 34 preferably being slightly less than or equal to the distance between the two first stage sections 44, thereby preventing the actuator from tilting.Preferably, a stopper 46 is integrally formed on a wall of one of the first step sections 44 facing the actuating arm 34. The reinforcing rib 36 on the outside of the actuating arm 34 is movable in the region of the second step sections 45. Preferably, there is a gap between the reinforcing rib and the second step section. That is, the width between the two reinforcing ribs is smaller than the distance between the two step sections, thereby reducing the frictional force that arises when the actuator moves in the receiving chamber. Furthermore, several actuating openings and connecting openings for receiving actuators of the pluggable female contact units or electrical conductors are provided in the region between the two narrow sides of the female retaining plate.The structures of the male insulator 5', the pluggable male contact unit 6' and the male retaining plate 4' are similar to those of the female insulator, the pluggable female contact unit and the female retaining plate and are not described again here.

[0077] A method for assembling a plug-in insert 100 is now described with reference to Fig. 11 and Fig. 5. A. An actuator 3 is pre-installed in a receiving chamber of a receiving section 41 of the female retaining plate 4. Specifically, the actuator 3 is first inserted into the receiving chamber with its retaining part 32, whereby the actuating section 33 moves along the first stepped section 44 of the receiving chamber until the retaining part 32 reaches the actuating opening 42 of the receiving section 41. Subsequently, the female retaining plate is turned over, whereby the stopper 46 located on the first receiving section 44 prevents the actuator 3 inserted into the receiving section from falling out. B. The pluggable protective earthing plate 1 is mounted on the female insulator 5.Specifically, the contact arm 12 of the pluggable protective earthing plate 1 is inserted into the housing section 52 of the plug-in area 56 of the female insulator 5, while the locking arm 13 is secured to the locking hook 51 of the connection area 55 of the female insulator 5, thus limiting the upward and downward movement of the pluggable protective earthing plate. The clamping spring is then reversibly held against the retaining section 14 of the pluggable protective earthing plate 1. Simultaneously, the pluggable female contact unit 6 is inserted into its corresponding female contact chamber 53. The female retaining plate 4 is mounted on the female insulator 5 from a cable connection side. Specifically, the locking window 47 of the female retaining plate 4 is locked onto the locking lug 54 of the female insulator 5.The retaining section 14 of the pluggable protective earthing plate 1, the clamping spring 2 held on this retaining section, the contacting section 15, and the previously pre-installed actuator 3 are together received in the receiving section 41 of the female retaining plate 4. D. Steps AC are performed for a male retaining plate 4', a male insulator 5', and an associated pluggable protective earthing plate 1'. E. The female insulator s and the male insulator 5' are plugged together at their mating areas to finally form the plug-in insert 100. The plug-in insert 100 can be installed in a connector housing.

[0078] Fig. 12 shows a further insert 100' according to a further embodiment of the present invention. The further insert uses conductors with different cross-sectional areas than the insert 100.

[0079] Figures 13 and 14 each show a perspective view of a pluggable protective earthing plate 1", in particular a female pluggable protective earthing plate, according to a further embodiment of the present invention. The pluggable protective earthing plate is manufactured by methods such as punching and bending of metal sheets, metal die casting, and the like. The pluggable protective earthing plate 1" comprises: a flat plate section 11"; a contact arm 12", which is used to establish an electrical contact with a contact arm 12" of the associated pluggable protective earthing plate 1", i.e., a male pluggable protective earthing plate, shown in Figure 15; two locking arms 13", each equipped with a locking hook 51" (Fig.19) a plug-in insert 100" is used to position the pluggable protective earthing plate 1"; and a retaining section 14" and a contacting section 15", which are molded onto the flat plate section 11".

[0080] The retaining section 14" is designed as a cantilever, is integrally formed with the flat plate section 11" and comprises an angled section 141" and a retaining segment 142", the angled section 141" being integrally formed with one side of the flat plate section 11" and extending substantially perpendicular to the flat plate section (upwards in Fig. 13), the retaining segment 142" extending substantially parallel to the flat plate section 11" to the other side of this flat plate section. The retaining segment 142" has a U-shaped retaining recess 143" for holding a retaining leg 21" of a clamping spring 2" (Fig. 17).

[0081] The flat plate section 11" has a U-shaped opening 111" aligned with the retaining recess 143" and whose width is smaller than the width of the retaining recess. Adjacent to the U-shaped opening 111" the flat plate section 11" is further provided with a sloping section 112". The sloping section 112" has a chamfer on one side facing the retaining segment 142" that forms an approximately U-shaped through-hole 113" and support sections 114" arranged on both sides of the through-hole 113", each of which has a chamfer. The flat plate section 11" is also provided with recesses 115" located on both sides of the contact arm 12". The through-hole 113" is used, for example, to insert a pin into a mold to reinforce the mold.

[0082] The contacting section 15" is integrally formed on the flat plate section 11", has an overall L-shaped cross-section and comprises a first wall 151" and a second wall 152", which are arranged at right angles to each other, wherein the second wall 152" is integrally formed on the flat plate section 11" on the same side as the angled section 141" of the retaining section 14" and points away from the retaining section, wherein the first wall 151" faces the retaining segment 143" of the retaining section.

[0083] Fig. 17 shows a clamping spring 2" according to a further embodiment of the invention, wherein the clamping spring has a retaining leg 21" and a clamping leg 22" which are connected to each other via a spring bending section 23". The retaining leg 21" has a tongue 24" on its rear side, i.e., a side facing away from the clamping leg 22', and has an extension section 25" at its end, the width of which is smaller than the width of the retaining leg, so that the retaining leg also has shoulders 26" at its end, which are arranged on both sides of the extension section.

[0084] Figure 16 shows that the clamping spring 2" and the actuator 3" are held on the pluggable protective earthing plate 1". As shown in Figure 16, the retaining recess 143" and the U-shaped opening 111" of the pluggable protective earthing plate 1" form a retaining guide space for holding and guiding the clamping spring 2". In particular, the retaining leg 21" of the clamping spring 2" and its extension section 25" are inserted successively against a z-direction into the retaining recess 143" and the U-shaped opening 111", the width of the retaining recess 143" being designed to match the width of the retaining leg 21" in order to prevent the clamping spring from wobbling along a y-direction in the retaining section; wherein the width of the U-shaped opening 111" is designed to be adapted to the width of the extension section 25" of the retaining leg 21" in order to limit the clamping spring in the y-direction and thus to perform a holding function.Furthermore, the retaining leg 21" can be guided within the retaining guide space, allowing it to move within a specific range along the z-direction. In other words, the retaining guide space acts as a guide. When the clamping spring 2" moves upwards along the z-direction due to its own elastic force, the tongue 24", located on the back of the retaining leg 21" abuts a surface of the retaining segment 141" (more precisely, an area where the retaining recess 143" is located) of the retaining section 14" facing the flat plate section 11", thereby achieving an upper limit to the movement of the clamping spring within the retaining section.When the clamping spring 2" moves downwards along the z-direction under the action of the actuator 3", the shoulder 26" of the retaining leg 21" rests against a surface of the flat plate section 11" on both sides of the U-shaped opening 111" (this surface faces the retaining segment 141"), thereby achieving a lower movement limit of the clamping spring in the retaining section.

[0085] After the retaining leg 21" of the clamping spring 2" is inserted into the retaining recess 143" and the extension section 25" into the U-shaped opening 111"', until the shoulder 26" rests against the flat plate section 11", the free end of the clamping leg 22" of the clamping spring 2" naturally rests against the first wall 151" of the contacting section 15", thus achieving the limitation of the clamping spring 2" between the retaining section 14" and the contacting section 15" along the x-direction. In particular, the U-shaped retaining recess 143" prevents the clamping spring 2" from tilting backward. In other words, it ensures retention in the x-direction. The first wall 151" prevents the clamping spring 2" from tilting forward. In other words, it ensures retention against the x-direction.

[0086] When the clamping leg 22" of the clamping spring 2" moves away from the first wall 151" under the action of the actuator 3", the inclined section 112", in particular its support section 114", provides support for the retaining leg 21" to prevent the retaining leg 21" from tilting towards the contacting section 15", thereby supporting / limiting the clamping spring against the x-direction.

[0087] Fig. 15 shows a perspective view of an associated pluggable protective earthing plate 1"' according to a further embodiment of the present invention. The construction of the associated pluggable protective earthing plate 1"' is approximately the same as that of the pluggable protective earthing plate 1" and is not described again here. One side (the side without hook sections) of the contact arm 12"' of the associated pluggable protective earthing plate T" is provided with a projection 12T" which is designed to establish electrical contact with the side (the side without hook sections) of the contact arm 12" of the pluggable protective earthing plate 1" and to move along it.

[0088] Fig. 19 shows a perspective view of a 100" plug-in insert according to a further embodiment of the present invention. Fig. 20 and Fig. 21 show a female and a male insert of the 100" plug-in insert, respectively. The female insert comprises a female insulator 5", a female retaining plate 4", a pluggable protective earthing plate 1" (i.e., a female pluggable protective earthing plate), each arranged on both narrow sides of the female insulator 5", and several pluggable female contact units 6" (Fig. 29). The male insert comprises a male insulator 5", a male retaining plate 4", an associated pluggable protective earthing plate 1" (i.e., a male pluggable protective earthing plate), each arranged on both narrow sides of the male insulator, and several pluggable male contact units 6" (Fig. 29).The female insulator 5" is provided on each of its narrow sides with a recess 52" used to receive part of the contact arm 12" of the pluggable protective earthing plate 1". The male insulator s'" is also provided on each of its narrow sides with a recess 52"' used to receive the contact arm 12" of the associated pluggable protective earthing plate. The female insulator 5" is provided on each of its narrow sides with two locking hooks 51" and on each of its wide sides with several locking lugs 54" for locking with locking windows 47" of the female retaining plate 4", thereby securing the female retaining plate to the female insulator.

[0089] Fig. 25 shows a perspective view of the female insulator 5". In the middle of the housing section 52" of the female insulator 5" an opening 521" is provided, wherein on both sides of this opening two locking sections 522" are provided, wherein the locking sections 522" rust into the recesses 115" of the flat plate section 11 when the pluggable protective earthing plate 1" is mounted. The vertical distance between the locking section 522" and the locking hook 51" is smaller than the vertical distance between the recess 115" of the insertable protective earthing plate 1" and the locking arm 13". Thus, the corrosion of the locking arm 13" against the locking hook 51" allows the insertable protective earthing plate 1" to rust into the female insulator s". Furthermore, the female insulator 5" is provided with a misoperation protection device 59" on each of its two narrow sides.Preferably, the misoperation protection can be configured as two misoperation protection devices of different shapes, one of which is a rectangular column and the other a column with a special shape. The female insulator 5" has a plurality of female contact chambers 53" for receiving a pluggable female contact unit 6".

[0090] Fig. 27 shows a perspective view of the male insulator 5'". The male insulator 5'" is also provided with a misoperation protection device 59'". Preferably, the misoperation protection device can also be configured as two misoperation protection devices of different shapes, one of which is a rectangular column and the other a semicircular column.

[0091] Fig. 22 shows a female retaining plate 4" of the female insert. The female retaining plate 4" has a receiving section 41" on each of its two narrow sides. As shown in Fig. 19, viewed from the cable connection side, the receiving section 41" has an actuating opening 42" and a connecting opening 43" connected to the actuating opening. The actuating opening is a circular opening, with the actuator 3" recessed in the actuating opening 42", and the connecting opening 43" being a circular opening through which the protective conductor can be inserted along the insertion direction, i.e., from the female insert towards the male insert. As shown in Fig.As shown in Figure 22, viewed from the insertion side, the interior of the receiving section 41" is designed as a receiving chamber used to receive the retaining section 14" and the contacting section 15" of the pluggable protective earthing plate 1", the actuator 3" and the clamping spring 2". The receiving chamber comprises a contacting section receiving area 44" for receiving the contacting section 15" and a retaining section receiving area for receiving the retaining section 14". The contacting section receiving area 44" is L-shaped and is adapted to the shape of the L-shaped contacting section 15". Preferably, the contacting section receiving area 44" has a base to provide a boundary for the contacting section 15". In addition to the retaining section 14", the retaining section receiving area also receives the actuator 3" and the clamping spring 2".

[0092] Figures 23 and 24 each show an enlarged view of the receiving section 41", with Figure 24 also showing the actuator 3" received in the receiving section 41". The receiving section comprises a pair of opposing first walls 46", a pair of opposing second walls 48", and a pair of opposing third walls 49". The distance between the first walls 46" is greater than the distance between the second walls 48", which in turn is greater than the distance between the third walls 49". A stop 481" is arranged on one of the second walls 48", and a post 482" is arranged on each of the second walls. Preferably, all inner walls of the receiving section have chamfers to facilitate assembly. The receiving section 41" also has a misoperation guard 45".Preferably, the misoperation protection can be configured as two misoperation protections of different shapes, one of which is a rectangular recess and the other a recess with a special shape. When the female retaining plate 4" is mounted on the female insulator 5", the misoperation protection 59" of the female insulator works in conjunction with the misoperation protection 45" of the female retaining plate to prevent incorrect assembly.

[0093] Fig. 26 shows a perspective view of the male retaining plate 4'''. The receiving section of the male retaining plate is essentially the same as the receiving section of the female retaining plate, except that the shape of the misoperation protection 45''' is different. The misoperation protection 45''' is preferably designed as two misoperation contactors of different shapes, one of which is a rectangular recess and the other a semicircular recess. This enables interaction with the fault protection section 59''' of the male insulator 59'''.

[0094] Fig. 18 shows a perspective view of the actuator 3". The actuator 3" comprises a holding part 32" with an active surface 31" and an actuating section 33", the active surface 31" being used to hold a tool 7 (Fig. 30), for example, three-legged tweezers. The actuating section 33" has two opposing actuating arms 34" which are connected at their ends by an actuating bridge 35". A receiving opening 37" remains between the actuating arms 34" and is therefore hollow. The two actuating arms 34" each have a reinforcing rib 36" on their outer surface. Compared to the actuator 3 from Fig. 7, the reinforcing rib 36" has a chamfer on its upper part.

[0095] During assembly, the actuator 3" is first installed in the receiving chamber of the female retaining plate 4". As shown in Fig. 24, the reinforcing ribs 36" of the actuator 3" are guided and moved between the first walls 46" of the receiving chamber, while the actuating arms 34" are guided and moved between the second walls 48". Since there is a receiving opening 37" between the actuating arms 34" and these actuating arms are hollow, the actuating arm 34" has a certain degree of elasticity and can move over the stop 481" on a pair of second walls 48" until a chamfer 38" arranged on the actuating web 35" abuts a chamfer on the post 482" of the second walls 48". If the female retaining plate 4" is turned over, the stop 481" prevents the installed actuator 3" from falling out of the female retaining plate.In other words, the post 482" provides an upper limit of the actuator 3" in the receiving section 41", while the stop 481" provides a lower limit of the actuator 3" in the receiving section 41".

[0096] The pluggable protective earthing plate 1" is then installed in the female insulator s", with the contact arm 12" being inserted into the housing section 52" and the flat plate section 11" resting on the upper part of the housing section 52". The clamping spring 2" is then inserted into the pluggable protective earthing plate 1", with the retaining leg 21" being held in the retaining section 14" and the clamping leg 22" bearing against the contacting section 15".

[0097] Finally, the female retaining plate 4" is turned over and mounted on the female insulator 5", whereby the retaining section 14" and the contacting section 15" of the pluggable protective earthing plate 1" and the clamping spring 2" enter the receiving chamber of the receiving section 41", whereby the spring bending section 23" of the clamping spring 2" enters the receiving opening 37" of the actuator 3" and pushes the actuator 3" upwards, i.e., towards the cable connection side. Now, the retaining part 32" of the actuator 3" enters the actuating opening 42" of the receiving section 41". Simultaneously, the detent window 47" of the female retaining plate 4" is locked onto the detent lug 54" of the female insulator 5", thus achieving the final assembly of the female insert. The assembly process for the male insert is identical.

[0098] Fig. 29 shows a partially assembled plug-in insert. The female and male inserts are not yet connected. The contact arm 12" of the plug-in protective earthing plate 1" and the contact arm 12"' of the associated plug-in protective earthing plate 1"' are in contact with each other before the plug-in female contact unit 6" and the plug-in male contact unit 6"' are connected, thus providing preliminary earthing. During a process in which the female and male inserts are further connected, the projection 121'" of the contact arm 12" moves along the contact arm 12" until the plug-in female contact unit 6" and the plug-in male contact unit 6"' are fully connected.When the female and male inserts are separated, the pluggable female contact unit 6" and the pluggable male contact unit 6"' are separated from each other first. At this point, the contact arm 12" and the contact arm 12"' are still in contact with each other to provide grounding protection.

[0099] Fig. 28 shows a sectional view of a narrow side of the fully assembled insert. In this assembled state, the space between the third wall 49" of the receiving section 41" accommodates the clamping leg 22" of the clamping spring 2" and corresponds to the connecting opening 43".

[0100] When it is necessary to insert a protective conductor (not shown) into the connecting opening 43", a tool 7, for example three-legged tweezers, acts on the working surface 31" of the actuator 3" located in the actuating opening 42", as shown in Fig. 30. A centrally arranged second leg 71 of the tool 7 is designed as a straight leg, and on either side of it are a first leg 72 and a third leg 73, each with a hook 74. The second leg 7 presses on the working surface 31" of the actuator 3" and pushes it downwards, so that the tool 7 can be inserted further into the actuating opening 42". At this point, the hooks 74 of the first leg 72 and the second leg 73 engage with the inner wall of the receiving section 41" to position the actuator 3" in this position.As the actuator 3" moves downwards, the actuating shank 35" of the actuator 3" acts on the clamping leg 22" of the clamping spring 2" and pushes the clamping leg 22" towards the retaining leg 21", thereby moving the clamping leg away from the first wall 151" of the contacting section 15" and thus creating a receiving space for the protective conductor. At this point, one hand is free to insert the protective conductor through the connecting opening 43". The clamping spring 2" also moves downwards with the thrust of the tool 7 until the shoulder 26" rests against the flat plate section 11". The second leg 72 and the third leg 73 of the three-legged tweezers are pressed together, so that the hook 74 releases from the receiving section 41" and the tool 7 is removed.At this point, the clamping spring 2" moves the retaining leg 21" upwards with its own elastic force until the tongue 24" rests against the retaining section 142", whereby the clamping leg 21" is moved towards the first wall 151" until the protective conductor is clamped between the free end of the clamping leg 22" and the first wall 151". Although the figures in combination show various aspects or features of the present invention, it is clear to those skilled in the art that the combinations shown and discussed are not the only possible combinations unless otherwise stated. In particular, corresponding units or features can be entirely interchanged in different embodiments.

[0101] List of reference signs

[0102] I, 1" pluggable protective earthing plate

[0103] II, 11" flat plate section

[0104] 12, 12" contact arm

[0105] 13, 13" ratchet arm

[0106] 14, 14" holding section

[0107] 15, 15" contact section

[0108] 141 retaining wall

[0109] 142 Guide wall

[0110] 143 attacks

[0111] 144 notch

[0112] 141" angled section

[0113] 142" holding segment

[0114] 143" U-shaped retaining recess

[0115] 111" U-shaped opening

[0116] 112" inclined area

[0117] 113" through hole

[0118] 114" support section

[0119] 115" recess

[0120] 151, 151" first wall

[0121] 152, 152" second wall

[0122] 2.2" clamping spring

[0123] 21, 21" retaining leg

[0124] 22, 22" clamping jaw

[0125] 23, 23" spring bending section

[0126] 24, 24" tongue

[0127] 25" extension section

[0128] 26" shoulder 3.3" actuator

[0129] 31, 31" effective area

[0130] 32, 32" retaining part

[0131] 33, 33" Actuating section

[0132] 34, 34" Actuating arm

[0133] 35, 35" Actuating bridge

[0134] 36, 36" reinforcing rib

[0135] 37, 37" aperture

[0136] 38" chamfer

[0137] 1', 1"' associated pluggable protective earthing plate

[0138] 12', 12"' Contact arm

[0139] 121'" lead

[0140] 100, 100" insert

[0141] 100', 100'" additional insert

[0142] 4.4" female mounting plate

[0143] 41, 41" recording section

[0144] 42, 42" Actuating opening

[0145] 43, 43" connection opening

[0146] 44 first stage section

[0147] 45 second stage section

[0148] 46 stoppers

[0149] 47, 47" detent window

[0150] 44" contact section receiving area

[0151] 45" Misuse protection

[0152] 46" pair of first walls

[0153] 48" pair of second walls

[0154] 49" pair of third walls

[0155] 481" stop

[0156] 482" posts

[0157] 5.5" female insulator

[0158] 51, 51" locking hook

[0159] 52, 52" accommodation section

[0160] 53, 53" female contact chamber

[0161] 54, 54" locking tab 55 connection area

[0162] 56 Plug area

[0163] 521" opening

[0164] 522" Locking section 59" Misuse protection

[0165] 6.6" pluggable female contact unit

[0166] 4 1 41 "male mounting plate"

[0167] 45"' Misuse protection

[0168] 5', 5"' male isolator 52"' accommodation section

[0169] 59'" Misuse protection

[0170] 6', 6'" pluggable male contact unit

[0171] 7 tools

[0172] 71 second thigh 72 first thigh

[0173] 73 third thigh

[0174] 74 hooks

Claims

Patent claims 1. Plug-in protective earthing plate (1, 1") for a plug-in insert (100, 100"), wherein the plug-in protective earthing plate (1, 1") comprises a flat plate section (11, 11"), a contact arm (12, 12") for electrical contact with an associated plug-in protective earthing plate (1', 1'') and two locking arms (13, 13") for locking with corresponding locking hooks (51, 51") of the plug-in insert (100, 100"), characterized in that the plug-in protective earthing plate (1, 1") further comprises a retaining section (14, 14") and a contacting section (15, 15") which are integrally formed on the flat plate section (11, 11"), wherein the retaining section (14, 14") is designed for reversibly holding a clamping spring (2, 2") and the contacting section (15, 15") is designed as a busbar to electrically contact and connect to a protective conductor.

2. Plug-in protective earthing plate (1 ) according to claim 1, wherein the retaining section (14) comprises a retaining wall (141 ) with a notch (144), two mutually parallel guide walls (142) on both sides of the retaining wall, and a stop (143) which is arranged below the notch and perpendicular to the retaining wall.

3. Plug-in protective earthing plate (1) according to claim 2, wherein the retaining wall (141) and the two guide walls (142) form a retaining / guiding space for holding / guiding the clamping spring (2), and wherein The reversible holding of the clamping spring (2) on the holding section (14) is achieved by an inner upper edge of the notch (144) abutting a tongue (24) of a holding leg (21) of the clamping spring (2) and an abutment of the stop (143) against a free end of the holding leg (21).

4. Plug-in protective earthing plate (1 ) according to claim 3, wherein the contact section (15) has an L-shaped cross-section and comprises a first wall (151 ) and a second wall (152) at a right angle to each other, wherein the second wall (152) points away from the retaining section (14).

5. Plug-in protective earthing plate (1") according to claim 1, wherein the retaining section (14") is designed in a cantilevered form and has an angled section (141") formed on one side of the flat plate section (11") and extending perpendicular to the flat plate section (11"), and a retaining section (142") extending parallel to the flat plate section (11") in the direction of the other side, wherein the retaining section (142") has an egg-shaped retaining recess (143").

6. Plug-in protective earthing plate (1") according to claim 5, wherein the flat plate section (11") has a U-shaped opening (111") aligned with respect to the retaining recess (143") and an inclined area (112") arranged adjoining the opening (111").

7. Plug-in protective earthing plate (1") according to claim 6, wherein the retaining recess (143") and the U-shaped opening (111") form a retaining guide space for holding / guiding the clamping spring (2"), wherein the clamping spring (2") comprises a retaining leg (21") having at its end an extension section (25") and shoulders (26") arranged on both sides of the extension section (25"), and comprising a tongue (24") at its rear, wherein the The retaining recess (143") is designed to hold the retaining leg (21") and the U-shaped opening (111") is designed to hold the extension section (25").

8. Plug-in protective earthing plate (1") according to claim 7, wherein an upper limit of movement of the clamping spring (2") in the holding section (14") is achieved by means of a surface of the retaining section (142") facing the flat plate section (11") bearing against the tongue (24") and a lower limit of movement of the clamping spring (2") in the holding section (14") is achieved by means of the shoulders (26") of the retaining leg (21") bearing against a surface of the flat plate section (11") on both sides of the U-shaped opening (111").

9. Plug-in protective earthing plate (1") according to claim 8, wherein the contacting section (15") has an L-shaped cross-section and comprises a first wall (151") and a second wall (152") which are arranged at right angles to each other, wherein the second wall (152") points away from the retaining section (14"), wherein the clamping spring (2") further comprises a clamping leg (22") inclined relative to the retaining leg (21"), the free end of which can rest against the first wall (151") in order to realize a limitation of the clamping spring (2") between the retaining section (14") and the contacting section (15").

10. Plug-in protective earthing plate (1") according to claim 9, wherein the inclined area (112") is designed as a support for the retaining leg (21") to prevent the retaining leg (21") from tilting towards the contacting section (15"), wherein the inclined area (112") has a through-opening (113") and support sections (114") arranged on both sides of the through-opening (113") for supporting the retaining leg (21").

11. Plug-in protective earthing plate (1 ,1") according to any one of claims 1 to 10, wherein the plug-in protective earthing plate (1 ,1") is an associated plug-in protective earthing plate (1 ', T") and has a projection on a rear side of its contact arm (12', 12'').

12. Insert (100, 100"), comprising a female insert and a male insert, wherein the female insert comprises a female insulator (5, 5"), the female insulator having a plurality of female contact chambers (53, 53") each for receiving an insertable female contact unit (6, 6"), a female retaining plate (4, 4") which is attached to the female insulator (5, 5") on the cable connection side of the female insulator (5, 5"), wherein the male insert comprises a male insulator (5', 5'"), the male insulator having a plurality of negative contact chambers (53) each for receiving an insertable male contact unit (6', 6'"), a male retaining plate (4', 4'") which is attached to the male insulator (5', 5'") on the cable connection side, characterized in that the insert (100,100'") further comprising a pluggable protective earthing plate (1 , 1") according to one of claims 1 to 10 arranged on each of the two narrow sides of the female insulator (5, 5") and an associated pluggable protective earthing plate (T, T") on each of the two narrow sides of the male insulator (5', 5'").

13. Insert (100, 100") according to claim 12, wherein the female retaining plate (4, 4") has on each of its narrow sides a receiving section (41, 41") for receiving the retaining section (14, 14") and the contacting section (15, 15") of the insertable protective earthing plate (1, 1") as well as the clamping spring (2, 2") and an actuator (3, 3").

14. Insert (100) according to claim 13, wherein the receiving section (41) has an actuating opening (42) and a connecting opening (43) connected to the actuating opening, wherein an interior of the receiving section (41) is a receiving chamber, wherein an inner wall of the receiving chamber has two opposing first step sections (44) and two opposing second step sections (45), wherein the actuator (3) has a retaining section (32) with an effective surface (31) and an actuating section (33), wherein the actuating section (33) has two actuating arms (34) extending in an actuating direction and an actuating web (35) connecting the two actuating arms (34) at their ends, wherein a reinforcing rib (36) is formed on the outside of each of the two actuating arms (34), wherein a tool extends via the actuating opening (42) onto the effective surface (31) of the Actuator (3) can actwherein the connecting opening (43) is used for inserting the protective conductor into the receiving section (41), wherein the actuating section (33) is guided between the two first step sections (44) and the reinforcing rib (36) is moved in the area of ​​the corresponding second step sections (45), wherein preferably a stopper (46) is formed on a wall of one of the first step sections (44) facing the respective actuating arm (34), which prevents the actuator (3) from falling out of the receiving chamber, wherein preferably there is a gap between each of the second step sections (45) and the corresponding reinforcing rib (36).

15. Insert (100") according to claim 13, wherein the receiving section (41") has an actuating opening (42") and a connecting opening (43") connected to the actuating opening on its cable connection side. comprising an interior of the receiving section (41") is a receiving chamber comprising a contacting section receiving area (44") for receiving the contacting section (15") and a holding section receiving area for receiving the holding section (14"), wherein the contacting section receiving area (44") is L-shaped, and wherein the holding section receiving area receives, in addition to the holding section (14"), the actuator (3") and the clamping spring (2").

16. Insert (100") according to claim 15, wherein the retaining section receiving area comprises a pair of opposing first walls (46"), a pair of opposing second walls (48") and a pair of opposing third walls (49"), wherein the distance between the first walls (46") is greater than the distance between the second walls (48"), wherein a stop (481") is arranged on one of the second walls (48") and a post (482") is arranged on each of the second walls (48").

17. Insert (100") according to claim 16, wherein the actuator (3") is hollow and comprises a retaining section (32") with an effective surface (31") and an actuating section (33"), wherein the actuating section (33") has two actuating arms (34") extending in the actuating direction and an actuating web (35") connecting the two actuating arms (34") at their ends, wherein a reinforcing rib (36") is formed on the outside of each of the two actuating arms (34"), wherein the reinforcing ribs (36") are guided and movable between the first walls (46"), wherein the actuating arms (34") are guided and movable between the second walls (48"), beyond the stop (481"), until a chamfer (38") arranged on the actuating web (35") abuts a chamfer of the post (482"), wherein the post (482") forms an upper boundary of the actuator (3") in the recording section (41") and the stop (481") provides a lower limit of the actuator (3") in the receiving section (41").

18. Insert (100") according to claim 17, wherein the receiving section (41") further comprises a misoperation protection (45") which interacts with a corresponding misoperation protection (59") of the female insulator (5").

19. Insert (100") according to claim 18, wherein a space between the third walls (49") corresponds to the connecting opening (43").

20. Insert (100, 100") according to one of claims 12 to 19, wherein the female insulator (5, 5") is provided on each of its narrow sides with a receiving section (52, 52") for receiving the contact arm (12, 12") of the insertable protective earthing plate (1, 1") and the locking hooks (51, 51") and on each of its broad sides with locking lugs (54, 54") for locking with locking windows (47, 47") of the female retaining plate (4, 4").

21. Method for assembling an insert (100, 100") according to any one of claims 12 to 20, comprising the following steps: A. An actuator (3, 3") is pre-installed in a receiving chamber of a receiving section (41, 41") of the female retaining plate (4, 4"), B. the pluggable protective earthing plate (1 , 1") is mounted on the female insulator (5, 5"), wherein the clamping spring (2, 2") is reversibly held on the retaining section (14, 14") of the pluggable protective earthing plate (1) and simultaneously each of the pluggable female contact units (6, 6") is inserted into its corresponding female contact chamber (53, 53"); C. the female retaining plate (4, 4") is mounted on the female insulator (5, 5") from a cable connection side; D. Steps AC are carried out for a male retaining plate (4', 4"'), a male insulator (5', 5"') and an associated pluggable protective earthing plate (1', 1"'); E. the female insulator (5, 5") and the male insulator (5', 5'') are joined together to form the plug-in insert (100, 100'').

22. Method according to claim 21, wherein the contact arm (12, 12") of the pluggable protective earthing plate (1, 1") and the contact arm (12', 12'") of the associated pluggable protective earthing plate (1', 1'") are in contact with each other before contacting the pluggable female contact unit (6, 6") and the pluggable male contact unit (6', 6'") and are separated after separation of the pluggable female contact unit (6, 6") and the pluggable male contact unit (6', 6'").

23. Method according to one of claims 21 and 22, wherein a tool (7) is designed as a three-legged tweezer, wherein a centrally arranged second leg (71) is a straight leg and on both sides of it a first leg (72) and a third leg (73) are each designed with a hook (74), wherein the tool is inserted from the side of the cable connection into the actuating opening (42, 42") of the receiving section (41, 41") of the female retaining plate (4, 4"), wherein the second leg (71) presses an actuator (3, 3"), wherein the hook (74) is hooked onto the inner wall of the receiving section (41, 41") for positioning the actuator (3, 3").

Images