WO2010079009A2

WO2010079009A2 - Insulating element and conductive contact element for an electrical installation appliance, and electrical installation appliance

Info

Publication number: WO2010079009A2
Application number: PCT/EP2009/066015
Authority: WO
Inventors: Jürgen Bross; Johann Herrmann; Andreas Mundt; Sebastian Schaich
Original assignee: Siemens Aktiengesellschaft
Priority date: 2008-12-19
Filing date: 2009-11-30
Publication date: 2010-07-15
Also published as: CN102257691B; WO2010079009A3; DE102008064124A1; CN102257691A

Abstract

The invention relates to an insulating element for covering a conductive contact element of an electrical installation appliance, the conductive contact element being arranged behind an opening in the housing of the electrical installation appliance, and the insulating element (1) comprising a snap or catch device (2) for engaging in the rear of at least one region of the conductive contact element (10) and for fixing the insulating element (1) to the conductive contact element (10). The invention also relates to a conductive contact element of a terminal of an electrical installation appliance, the conductive contact element (10) being arranged behind an opening in the housing of the electrical installation appliance and comprising at least one gap (11) for feeding through a catch or snap device (2) of such an insulating element (1). The invention also relates to an electrical installation appliance comprising such a conductive contact element (10).

Description

description

Insulating element and conductive contact element for an electrical installation device and electrical installation device

The present invention relates to an insulating element for covering a conductive contact element of an electrical installation device, wherein the conductive contact element is arranged behind an opening in the housing of the electrical installation device. The invention further relates to a conductive contact element of an electrical installation device, wherein the conductive contact element is arranged behind an opening in the housing of the electrical installation device, and an electrical installation device, comprising at least one opening and behind the at least one opening in the housing of the electrical Installation device arranged conductive contact element.

On electrical installation devices, cables are fixed by terminals, usually by screw terminals. For this purpose, the Isolierstoffgehäuse the installation device openings, behind which are the terminals. In order to be able to clamp conductors of larger cross-section, it is unavoidable to dimension the terminal and thus the opening in the installation device so large that finger-lying metal parts can be touched and thereby an electric shock can be suffered. This danger is particularly present when conductors are clamped with a much smaller cross section than the maximum possible cross section. Because then a large part of the terminal cross-section is closed by a conductive element, ie a metallic part, such as a clamping screw or a clamping pressure piece. The clamping screw or the clamping pressure piece is now located directly behind the housing opening and can be touched by the installer or the user if, for example, he assembles or disassembles other devices in the distribution or connects or disconnects the conductor. To make the installation device umgreifsicher, externally accessible conductive contact element of the terminal, usually the clamping pressure piece, provided with an additional insulating, which prevents the installer or user can touch the conductive contact element. Known insulating elements are inserted with pins in openings of the conductive contact element, for example, the clamping pressure piece. The disadvantage is that the insulating element that forms the Umgreifschütz, in the housing, ie on the inside of the housing of the installation device, must be performed because the connector of the insulating in the clamping pressure piece is made very delicate and is not capable of the loads occurring during handling and clamping conductors. Subsequent installation of a known insulating is not possible. The insulating element must be fixed together with the terminal behind the opening of the housing, inside the housing. Although installation devices with such an insulating element on the conductive contact element are grip-proof, the installation devices themselves are completely inflexible. To equip an electrical installation device with such an insulating later, to make this umgreifsicher.

In Fig. 1, a so-called standard variant of an electrical installation device 20 is shown in which the

Terminal 18 and thus the conductive contact element 10 are formed without insulating. The metallic contact element 10, i. the clamping pressure piece, can be easily touched from the outside, whereby the user or installer can easily come into contact with the electrically conductive contact element 10.

2 shows an installation device 20 in which an insulating element 1 is arranged on the conductive contact element 10 of the terminal 18. In this comfort variant of the installation device 20, the conductive contact elements 10 of the terminals 18 are shielded by the insulating member 1. The insulating member 1 has two short pins, which in corresponding Holes in the conductive contact element 10, in particular in the clamping pressure piece, are inserted. In addition, the insulating element 1 is guided in the interior of the installation device 20 left and right on the housing 21, since the pins are only inserted in the conductive contact element 10 and not secured against falling out. Omitting the insulating element 1 to form the standard variant of the installation device 20 would have the consequence that the housing 21 would have to be adapted to the conductive contact element 10 or to the clamping pressure piece, since a clearance between the housing 21 and the conductive contact element 10 due to the absence of Insulating element 1 is created. Accordingly, standard and comfort variant of the installation device 20 can not be realized in the same housing 21.

The openings in the conductive contact element or in the clamping pressure piece, which serve to receive the pins of the insulating element 1, are in the standard series of installation devices 20, which have no insulating 1, open. This carries the risk of miscarriage. That is, there is a risk that the user who tries to connect a conductor to the installation device 20, the conductor, instead of the open terminal, in the openings for the pins, ie in the wrong hole, inserted and screwed the empty terminal, Especially since the user does not see the terminal opening in a mounted in a distribution cabinet installation device 20, so blind plugged.

In the case of the installation device 20 shown in FIG. 3, too, the conductive contact element 10 without insulating element 1 is used. The opening for the passage of an electrical conductor to the terminal, which is normally closed by the insulating element 1, is free here. As a result, there is a risk that the user, instead of inserting the conductor into the open terminal intended for this purpose, inserts it into the pin opening of the clamping pressure piece and screwed the terminal without a conductor. In built-in position, the opening of the clamp is usually not to see and by the mean of the opening or the bore falls a misfed ladder not too much.

The object of the invention is therefore to provide an insulating element for covering a conductive contact element of a terminal of an electrical installation device and a conductive contact element of a terminal of an electrical installation device, by which an electrical installation device simply umgreifsicher trained, in particular retrofitted, can be. In particular, an electrical installation device is to be created that can be re-equipped if necessary by simple means.

These objects are achieved according to the invention by an insulating element having the features according to independent claim 1, by a conductive contact element having the features according to independent claim 11 and by an electrical installation device having the features according to independent claims 18. Further features and details of the invention emerge from the subclaims, the description and the drawings. In this case, features and details that are described in connection with the insulating according to the invention, of course, also in connection with the conductive contact element according to the invention and the electrical installation device according to the invention, and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference.

According to the first aspect of the invention, the object is achieved by an insulating element for covering a conductive contact element of a terminal of an electrical installation device, wherein the conductive contact element is disposed behind an opening in the housing of the electrical installation device, wherein the insulating element at least one latching or snap-in device behind a portion of the conductive contact element and for securing the insulating element to the conductive contact element, solved. The core of the invention is that the insulating element is attached directly to the conductive contact element, in particular to the clamping pressure piece, non-positively. The insulating is not held by the housing of the installation device. The latching or snap device engages behind at least a portion of the conductive contact element and thereby secures the insulating element to the conductive contact element. An insulating element formed in this way is very simple and can be easily attached to the conductive contact element as required. In this case, the attachment of the insulating element to the conductive contact element is possible even after the assembly of the terminal or of the conductive contact element of the terminal in the housing interior of the installation device.

The connection of the insulating element and the conductive contact element of the terminal by means of a latching or snap-in device makes it possible to securely mount the insulating element on the installation device without having to guide it to housing walls in the interior of the installation device. As a result, the insulating element after installation of the terminals in the housing, so very late in the production process, are mounted. This offers the advantage that it is now possible to produce the variant variety of installation equipment, by sales-promoting additional features for higher-priced installation equipment, such as serving as Umgreifschütz insulating element, only at the end of the production process, and so the main part of production lean, so to keep low variation.

In addition, it is avoided that the device housing for installation equipment variants with insulating a wide guide for the clamping pressure piece and the insulating needed, while it requires installation device variants without Isoliere- ment only a narrow guide for the clamping pressure piece alone. This saves housing variants and costs through additional housing tools. The insulating member advantageously has approximately the shape of the opening through which the insulating member is passed, so that the insulating member almost completely covers the conductive contact element of the terminal. Therefore, it is further preferred that the shape of the insulating member is smaller than the opening in the housing of the electrical installation device, so that the insulating member is attachable through the opening to the conductive contact member.

Particularly preferred is an insulating element, in which the latching or snap device has at least one spring-elastic snap hook. That is, the insulating member may be fixed to the conductive contact member of the clamp by means of a compact snap-on hook. The snap hook is designed to be resilient, so that it is bent resiliently when passing through the opening in the conductive contact element, in particular in the clamping pressure piece and snaps back into its original shape after passing through the opening and thereby engages behind the conductive contact element. In a preferred embodiment of the insulating element, this has two snap hooks. Preferably, however, the insulating element can also have more than two snap hooks, for example four snap hooks. These are preferably arranged distributed on the insulating, so that a uniform attachment of the insulating element is made possible on the conductive contact element.

In another preferred embodiment of the insulating element is provided that the latching or Schnappeinrich- device has a Baj onettverschluss. The bayonet closure of the insulating element is formed by a protruding from the insulating hook, which is inserted through the opening in the conductive contact element of the terminal and then by a displacement and / or rotation of the insulating member, the conductive contact element non-positively and / or positively engages behind. The connection of the insulating element and the conductive contact element via a so-called plug-in rotary movement or plug-sliding movement of the Insulating. The inserted through the opening of the conductive contact element part of the protruding hook of the bayonet catch engages behind by the displacement and / or rotation of the conductive contact element. The protruding hook has, for example, an L-shaped or a T-shaped form, wherein the angled portion of the L-shaped or T-shaped form of the protruding hook after the displacement and / or rotation of the insulating element and thus the protruding hook the conductive Contact element engages behind and thereby securely fixes the insulating element on the conductive contact element.

That is, the insulating element is fixed by means of a compact bayonet closure on the conductive contact element, for example the clamping pressure piece. The bayonet contour, for example, the hook, the bayonet closure takes over both the positioning of the insulating element on the conductive contact element, as well as the stable tight fit, which prevents the falling of the insulating element from the conductive contact element. Therefore, the insulating member does not need a guide on its left and right sides in the housing, thereby making it possible to make the insulating narrower. Characterized a mounting of the insulating member to the conductive contact element after installation of the terminals in the housing of the installation device is possible, since the insulating element can be mounted from the outside through the opening in the housing of the installation device to the conductive contact element. The insulating element has on its side facing the conductive contact element at least one bayonet contour. The bayonet contour of the bayonet closure is not resilient. The bayonet contour is inserted in the conductive contact element, in particular the clamping pressure piece, by at least one corresponding counterculture and secured by turning or pushing against loosening.

As already stated above, an insulating element is preferred in which the bayonet fastening is designed as a sliding bayonet closure or as a rotating bayonet closure is. The shape of the sliding bayonet closure differs only slightly from the shape of the rotary baj onettverschluss. Both closure variants have at least one bayonet contour protruding from the insulating element, in particular a hook, which is guided through the corresponding mating contour, ie a recess or opening, in the conductive contact element. In Schiebebaj onettverschluss the entire insulating is displaced, so that an angled portion of the bayonet contour or the hook engages behind the conductive contact element. In which

Drehbaj onettverschluss the entire insulating is rotated so that the angled portion of the bayonet contour or the hook engages behind the conductive contact element. The latching or latching device may comprise a plurality of sliding bayonet constructions, i. a plurality of hooks, which can be passed through a corresponding plurality of recesses or openings in the conductive contact element.

Furthermore, an insulating element is preferred in which the insulating element has at least one fastening element for engagement in an opening of the conductive contact element. The fastening element serves for additional fixing of the insulating element to the conductive contact element. That is, after sliding or untwisting the insulating element on the conductive contact element, the insulating element is additionally secured by the at least one fastening element against displacement or rotation of the insulating element. The fact that at least one fastening element can be, for example, a pin or retaining pin projecting out of the insulating element. The fastening element is inserted into corresponding mating contours on the conductive contact element, in particular the clamping pressure piece. The additional fastening element is particularly advantageous if the latching or snap-in device of the insulating element is designed as a Baj onettverschluss.

The insulating element advantageously has a plate-shaped main body. This body can be different Shapes, for example, an oval, circular or rectangular shape, have. Preferably, the shape of the plate-shaped base body is adapted to the shape of the opening in the housing of the installation device through which the insulating element is passed for attachment to the conductive contact element. The latching or snap device is arranged on one or both side (s) of the plate-shaped base body.

Particularly preferred is an insulating element in which the latching or snap-in device, in particular the at least two spring-elastic snap hooks, are arranged on the edge of the plate-shaped basic body. The openings or recesses in the conductive contact element, which serve to receive the latching or snap device, are advantageously arranged as far as possible on the outside of the conductive contact element. That is, the openings or recesses are preferably very far off-center, that is provided at the edge of the conductive contact element. Therefore, an insulating element is preferred in which the snap-in hooks are also arranged off-center, in particular on the edge of the main body of the insulating element. An inadvertently inserted into the conductive contact element conductor is then not centered on the conductive contact element, but off-center, which is noticed by the user. Due to the eccentricity of the openings or recesses, the openings or recesses are also completely or partially covered by the clamping frame located behind the conductive contact element, in particular the clamping pressure piece, which additionally prevents mis-insertion. The openings or recesses in the conductive contact element are also made very narrow, so that the insertion of a conductor is difficult.

A provided on the second side of the plate-shaped base gripping device allows the gripping of the insulating element, so that it can be removed from the conductive contact element again. The gripping device can consist of one or more holes in the main body of the iso be formed lierelementes. Furthermore, it is conceivable that the gripping device is formed by an element protruding from the main body. In this case, the gripping device is arranged on the side facing away from the latching or snap-action side of the main body of the insulating element.

Particularly preferably, the plate-shaped base body of the insulating element openings, which are provided at the foot of the latching or snap device. These openings in the insulating allow the relatively short trained snap hook more elastic spring travel. When a snap hook is deflected, there are areas that are bent and areas that are twisted. As a result, the Aufschnappkraft the snap hook can be adjusted constructively through the length of the openings.

According to the second aspect of the invention, the object is achieved by a conductive contact element of a terminal of an electrical installation device, wherein the conductive contact element is arranged behind an opening in the housing of the electrical installation device, and wherein the conductive contact element has at least one recess for passing a locking device. or snap device of an insulating according to the first aspect of the invention, solved.

The core of the conductive contact element of the terminal is that the at least one recess formed in the conductive contact element for passage of the special locking or snap device of the insulating. That is, the at least one recess or opening of the conductive

Contact element is designed for the passage of a snap hook or a bayonet closure. The recess for the passage of a bayonet closure has at least the cross-sectional shape of the widest point of the bayonet contour, in particular of the hook on. In this case, the recess is arranged in the conductive contact element in such a way that the insulating element is inclined or rotated towards its end position on the conductive contact element to the conductive contact element. must be performed so that the Baj onettverschluss, which is preferably designed as a hook, can be passed through the recess in the conductive contact element. As a result of the subsequent rotation of the insulating element, the front angled region of the bayonet closure or the hook engages behind the conductive contact element. The Baj onettverschluss is advantageously, in contrast to the snap hooks of the snap device, centrally arranged on the contact element facing side of the main body of the insulating element.

Particularly preferred is an embodiment of the conductive contact element, which is characterized in that the at least one recess are provided on the edge or on the contour of the conductive contact element. Such an embodiment of the conductive contact element has the advantage that an inadvertently incorrectly inserted conductor is then not centered to the conductive contact element, but off-center, which is noticed by the installer. Due to the external impermeability, the recesses are also completely or partially covered by the clamping frame located behind the conductive contact element, which additionally prevents the incorrect insertion. The insulating element is attached only to the conductive contact element, in particular the clamping pressure piece, and does not require a guide on its left and right side in the housing. This makes it possible to make the insulating narrower. As a result, it is possible to mount the insulating element on the conductive contact element after the terminals have been installed in the housing of the installation device, since the insulating element can be easily mounted from outside on the conductive contact element or the clamping pressure piece.

Furthermore, a conductive contact element that has at least one embossed region for receiving a part of the latching or snap-in device on the side facing away from the opening in the housing of the electrical installation device side is particularly preferred. Chamfered means that the thickness of the conductive contact element at certain areas is reduced. The clamping pressure piece is designed so that the surfaces which are engaged behind by the angled portions of the snap hook or the front part of the bayonet closure, are embossed. That is, the clamping pressure piece is so thin on these surfaces that these surfaces and the angled portions of the snap hook or the front part of the bayonet contour are not thicker together than the sheet thickness of the conductive contact element, in particular of the clamping pressure piece. The part of the latching or snap-in device that is received on the embossed region is the front angled region of the hook protruding from the side of the main body of the insulating element or spring-loaded snap-action hook. In the case of the bayonet closure, the protruding hook represents the so-called bayonet wing. The conductive contact element, in particular the clamping pressure piece, is designed so that the surface (s) which is engaged behind by the bayonet wing (s) is embossed / are, that is, the clamping press piece is so thin on this / this surface (s) that this surface (s) and the / the bayonet wings together are not thicker than the sheet thickness of the conductive contact element itself.

Furthermore, an embodiment variant of the conductive contact element is preferred in which the at least one embossed region extends inclined to the side facing the opening in the housing of the electrical installation device. As a result, during the pushing on or during the rotation of the so-called bayonet wing, the front angled part of the bayonet wing is rubbed against the inclined, embossed region of the conductive contact element, so that the bayonet wing can be fixed non-positively to the conductive contact element.

The conductive contact element further preferably has at least one opening for receiving a fastening element of the insulating element. This opening may be formed as a simple bore into which the fastener, the in particular in the form of a pin, retaining pin or retaining tooth is formed, can snap. The inclusion in the conductive contact element, in interaction with the fastening element, ensures that the deferred or twisted-up insulating element can not be released by itself. The fastener thus represents an additional backup.

The conductive contact element preferably represents a terminal pressure piece of a terminal.

According to the third aspect of the invention, the object is achieved by an electrical installation device having at least one opening and a terminal arranged behind the at least one opening in the housing of the electrical installation device terminal with a conductive contact element, wherein the conductive contact element according to the second aspect of the invention is trained. An electrical installation device having such a conductive contact element can be made very secure by the arrangement of an insulating element, which is formed according to the first aspect of the invention, on the conductive contact element. In this case, the insulating element can be easily guided through an opening in the housing of the installation device to the behind the opening arranged conductive contact element to strip this. That is, such an electrical installation device can be made very secure when needed by the insertion of the special insulating element.

The invention will now be explained in more detail by means of embodiments with reference to the accompanying drawings. Show it:

Figure 1 is a known conductive contact element of a terminal, which is arranged behind an opening in the housing of an installation device; Figure 2 is a arranged on a conductive contact element insulating element according to the prior art;

3 shows a known conductive contact element of a clamp with an opening for receiving a pin of a

insulating;

Figure 4 shows an installation device with an insulating element, which is arranged on a conductive contact element;

FIG. 5 shows a terminal with a conductive contact element and an insulating element fastened to the conductive contact element by a sliding bolt onettverschluss;

Figure 6 shows an insulating with a Schiebebaj onettverschluss;

Figure 7 shows a conductive contact element with recesses for receiving an insulating element with sliding bayonet locks;

FIG. 8 shows another view of the conductive contact element according to FIG. 7;

Figure 9 shows a clamp with a on the conductive contact element of the terminal via a Drehbaj onettverschluss arranged insulating;

10 shows an insulating element with a Drehbaj onettverschluss during the attachment process to a conductive contact element of a terminal.

FIG. 11 an insulating element with a rotating baj onettver conclusion; FIG. 12 shows a conductive contact element with a recess for receiving a rotating bayonet closure of an insulating element;

FIG. 13 shows a fastened to a conductive contact element

Insulating element with two sliding bayonet locks in a sectional view;

Figure 14 Installation devices with a terminal and a conductive contact element and partially attached

insulating elements;

Figure 15 is a terminal with an insulating element attached to the conductive contact element of the terminal via snap hooks;

Figure 16 is a terminal with a conductive contact element and provided in the contour of the conductive contact element recesses for receiving snap hooks of an insulating element;

FIG. 17 shows an insulating element with four snap hooks;

FIG. 18 shows another view of the insulating element according to FIG. 17;

FIG. 19 shows a conductive contact element of a terminal with recesses provided in the contour of the conductive contact element for receiving snap hooks of an insulating element;

FIG. 20 shows a sectional view of an insulating element fastened to a conductive contact element of a terminal by means of snap hooks;

FIG. 21 shows an insulating element with four snap hooks; FIG. 22 shows a conductive contact element of a terminal with recesses provided in the contour of the conductive contact element for receiving four snap hooks of an insulating element;

FIG. 23 shows an insulating element attached to a conductive contact element of a terminal via four snap hooks;

FIG. 24 shows an insulating element with two snap hooks;

Figure 25 shows a conductive contact element of a terminal with provided in the contour of the conductive contact element recesses for receiving two snap hooks of an insulating element;

FIG. 26 shows an insulating element fastened to a conductive contact element of a terminal via two snap hooks;

FIG. 27 shows an insulating element with four snap hooks;

FIG. 28 shows a conductive contact element of a terminal with recesses provided in the contour of the conductive contact element for receiving four snap hooks of an insulating element;

FIG. 29 shows an insulating element attached to a conductive contact element of a terminal via four snap hooks;

FIG. 30 shows an insulating element with four snap hooks fastened to a conductive contact element of a terminal via four snap hooks;

FIG. 31 shows a conductive contact element of a terminal with recesses provided in the contour of the conductive contact element for receiving two snap-in hooks and two fastening elements of an insulating element; FIG. 32 shows an insulating element with two snap hooks and two fastening elements.

In Figs. 1 to 3 are known from the prior art electrical installation equipment 20 shown with known terminals, as stated in the introduction.

Fig. 4 shows an insulating element 1, which by means of a sliding bayonet closure 4a of a latching device 2 on the conductive contact element 10, i. on the clamping pressure piece, the terminal 18 of the electrical installation device 20 is attached. The insulating element 1 is narrower than the terminal opening 22 of the housing 21 of the installation device 20. Therefore, the insulating element 1 can be subsequently mounted with the installation device 20 closed through the opening 22 on the conductive contact element 10 of the terminal 18. The insulating element 1 has production-related openings or holes 7, through which the metal conductive contact element 10 can be seen. However, these are not large enough to touch the conductive contact element 10 behind it with the finger. The openings or holes 7 can serve as a gripping device when the insulating element 1 is to be removed from the conductive contact element 10.

In Fig. 5, a terminal 18 with a conductive contact element 10 and on the conductive contact element 10 by a Schiebebaj onettverschluss 4a a latching device 2 attached insulating 1 is shown. The terminal 18 has, in addition to the conductive contact element 10, a clamping frame 16 and a clamping screw 17. The clamping screw 17 serves to fix an inserted conductor. The two sliding bayonet locks 4a are designed as Schiebebaj onettflügel, wherein the angled wing tips engage behind the embossed portions 13 of the conductive contact element 10.

The latching or snap device 2 of the insulating element 1 can be designed in various ways. 6 shows a variant of an insulating element 1 with a sliding bebaj onettverschluss 4a. The Schiebebaj onettverschluss 4a has two Schiebebaj onettflügel which are pushed after insertion through corresponding recesses 11 in the conductive contact element 10 behind the conductive contact element 10, in particular behind embossed regions 13 of the conductive contact element 10. That is, the insulating member 1 is inserted with the Schiebebaj onettflügein 4a in the trained as a clamping pressure piece conductive contact element 10. By moving upwards the Baj onettverschluss 4 is closed. The Schiebebaj onettflügel 4a engage behind the embossment 13 in the pressure piece 10. The trained as holding pins fasteners 5 snap when closing the bayonet lock 4 in designated openings 15, in particular holes in the conductive contact element 10 and thereby prevent the Baj onettverschluss. 4 opens by itself.

FIGS. 7 and 8 show a conductive contact element 10 with recesses 11 for receiving an insulating element 1 with sliding bayonet locks 4, 4a. In this embodiment of the conductive contact element 10, this has two recesses 11 through which the Schiebebaj onettflügel the sliding bayonet catch 4a are first inserted therethrough before the insulating member 1 is moved, so that the Schiebebaj onettflügel 4a the embossed region on the second side 14 of the conductive contact element 10 behind. Due to the embossed areas 13, the combination of the deferred part of the sliding bay onettflugis 4a and the embossed area 13 in thickness is not thicker than the thickness of the widest point of the conductive contact element 10. Thereby no additional space for receiving the Schiebebaj onettflügel 4a needed. The recesses 11 of the conductive contact element 10 are prepared for receiving the latching device 2 designed as sliding bayonet locks 4, 4a. The second side 14 of the conductive contact element 10 faces away from the opening 22 in the housing 21 of the electrical installation device 20. At the first Side 12 of the conductive contact element 10, the insulating element 1 sets after passing through the opening 22 at.

FIGS. 9 and 10 show a clamp 18 with an insulating element 1 arranged on the conductive contact element 10 of the clamp 18 via a rotary latch 4b. That is, the insulating member 1 has in this embodiment a Drehbaj onettverschluss 4b. The insulating member 1 is, as shown in Fig. 10, placed twisted and fixed by turning in the upright position, see Fig. 9. The conductive contact element 10 has a corresponding recess 11, through which the Drehbaj onettverschluss 4 b in the position, such as shown in FIG. 10, can be pushed through. After the rotation of the insulating element 1, the rotating bayonet locks 4b are displaced such that they engage behind the conductive contact element 10.

In Fig. 11, an insulating 1 is shown, which has a Baj onettverschluss 4 a Drehbaj onettverschluss 4 b up. The Drehbaj onettverschluss 4b has so-called rotating bayonet wings, which engage behind the conductive contact element 10 after a corresponding rotation of the insulating member 1. In this embodiment variant of the insulating element 1, the rotating bayonet wings 4b are arranged in a circle opposite to one another. They are inserted into the recess 11 formed as a conductive contact element 10 clamping pressure piece and hold after twisting of the insulating 1 on the designated surfaces of the conductive contact element 10. The trained as a holding tooth fastening element snaps after mounting the insulating member 1 on the clamping pressure piece 10 in a corresponding opening 15 in the clamping pressure piece 10, prevents turning back of the insulating element 1 and thus secures the insulating element 1 against disassembly. The latching device 2 designed as a rotating bayonet catch 4b is arranged on one side 6a of the insulating element 1 designed as a plate-shaped main body 6. This so-called first side of the insulating element 1 is during assembly of the insulating member 1 to the conductive contact element 10 of the terminal 18 facing this.

FIG. 12 shows a conductive contact element 10 with a recess 11 for receiving a rotating bayonet closure 4b of an insulating element 1. The recess 11 in the conductive contact element 10 is arranged such that the insulating element 1 first has to be brought to the conductive contact element 10 in a position facing away from the vertical position, so that the rotary baj onettverschluß 4b with its two rotating bayonet wings through the recess 11 can be inserted therethrough. Only through the rotation of the insulating element 1 do the rotary bayonet wings engage behind the corresponding regions of the conductive contact element 10.

FIG. 13 shows a sectional view through a conductive contact element 10 and an insulating element 1. The insulating element 1 has two sliding bayonet locks 4a. These two sliding bayonet locks 4a have been inserted through the recesses 11 in the conductive contact element 10 and then the insulating member 1 has been moved so that the Schiebebaj onettflügel 4a engage behind the conductive contact element 10. In other words, due to the stamped regions 13 of the conductive contact element 10, the sliding bayonet wings engage behind the conductive contact element 10 without protruding beyond. This saves installation space and does not additionally inflate the clamp 18 with respect to a variant without an insulating element. Not shown in this Fig. 13 is the fastener 5, which engages in corresponding holes 15 of the conductive contact element 10 to hold the insulating member 1 in the pushed position.

FIG. 14 shows two electrical installation devices 20. The installation device 20 shown on the left in FIG. 14 has a clamp 18 behind the opening 22 in the housing 21. This clamp 18 has a conductive contact element 10 which is visible through the opening 22. The right side Installation device 20 additionally has an insulating element 1 fastened to the conductive contact element 10. The insulating element 1 is fastened by means of snap hooks 3 of a snap-action device 2 on the conductive contact element 10 designed as a clamping pressure piece. The insulating element 1 is narrower than the terminal opening 22. It can therefore be retrofitted with the installation device 20 is closed by the terminal opening 22 through in the installation device 20. The insulating element 1 has production-related openings 7, through which the metal clamping pressure piece 10 can be seen. However, these openings 7 are not large enough to touch the clamping press piece 10 behind it with the finger. The insulating element 1 is fastened here with four snap hooks 3 on the clamping pressure piece 10. These snap hooks 3 engage in the recesses 11 in the clamping pressure piece 10, which are formed extra narrow and attached to the edge of the clamping pressure piece 10. Furthermore, the recesses 11 are covered from behind by the clamping frame 16.

In Fig. 15, a terminal 18 is shown with a fixed to the conductive contact element 10 of the terminal 18 via snap hook 3 insulating 1. The recesses 11 in the conductive contact element 10 are arranged very far outside at the edge and partially covered by the clamping frame 16. This significantly reduces the risk of a wrongly set conductor. The snap hooks 3 of the insulating

I are passed through the recesses 11 and the front angled parts of the snap hooks 3 have the conductive contact element 10 engaged behind. Fig. 16 shows the same terminal 18 only without insulating 1. The recesses

II of the conductive contact element 10 are provided on the contour of the conductive contact element 10.

17 and 18 show a further embodiment of an insulating element 1. In this case, the insulating element 1 on the first side 6a of the plate-shaped main body 6 has four snap hooks 3 protruding from the main body 6. These are resiliently designed to pass through bent by the recesses 11 of the conductive contact element 10 and after passing through the recesses 11, the conductive contact element 10 due to the spring elasticity to engage behind. That is, the insulating member 1 is snapped onto the conductive contact member 10. The

Snap hooks 3 preferably engage behind specially shaped regions 13 of the conductive contact element 10. In the lateral transition of the main body 6 of the insulating element 1, the torsion region 8 of the snap hook 3 lies, while in the shaft of the snap hook 3 the bending region 9 lies. The openings 7 in the insulating 1 allow the relatively short snap hook 3 more elastic travel. That is, at a deflection of the snap hook 3, there are areas 9 that are bent and areas 8 that are twisted. Due to the length of the openings 7, the Aufschnappkraft the snap hook 3 can be structurally adjusted.

In Fig. 19, a conductive contact element 10 is shown, on its lateral contour four recesses 11 for receiving four snap hooks 3 of a corresponding

Having insulating 1. On the second side 14 of the recesses 11 of the conductive contact element 10 embossed areas 13 are provided, which are engaged behind by the angled tips of the snap hooks 3.

In Fig. 20, an insulating element 1 is shown in a sectional view that is secured by snap hooks 3 to a conductive contact element 10 of a terminal 18. The angled front regions of the snap hooks 3 engage behind the embossed regions 13 of the recesses 11 of the conductive contact element 10. As a result, the insulating element 1 is securely mounted on the clamp 18. Due to the stepped or stamped regions 13, the snap hooks 3 surround the conductive contact element 10 designed as a clamping pressure piece without protruding beyond it. This saves installation space and does not additionally inflate the clamp 18 with respect to the variant without insulating element. FIGS. 21 to 23 show an insulating element 1, a conductive contact element 10 and a terminal 18 with a conductive contact element 10 and an insulating element 1. The insulating element 1 has four snap hooks 3 and the conductive contact element 10 has four laterally arranged on the contour of the conductive contact element 10 recesses 11 for receiving the four snap hooks 3 of the insulating element running. In this embodiment of the insulating element 1, the snap hooks 3 are generated by a tool slide.

In the embodiment according to FIGS. 24 to 26, an insulating element 1 with two snap-action hooks 3, a conductive contact element 10 with two recesses 11 for the purpose of excluding such an insulating element 1 and a terminal 18 with an insulating element 1 are shown. In this variant, the production of snap hooks 3 without tool slide is possible. The snap hooks 3 are mounted in the lower region of the insulating element 1. The upper end is guided in the installation device 20 and needs no additional fixation.

FIGS. 27 to 29 show alternative embodiments of an insulating element 1 with positively shaped snap hooks 3. The conductive contact element 10 requires a corresponding, embossed contour.

FIG. 32 shows a further embodiment variant of an insulating element 1. On the first side 6a of the plate-shaped main body 6, two snap hooks 3, which form the snap device 2, are arranged. Furthermore, the insulating element 1 has two fastening elements 5, which serve as centering hooks. The purpose of the centering hooks 5 is to pre-center the insulating element 1 before snapping it onto the conductive contact element 10 on the conductive contact element 10, thus facilitating the assembly, ie the snapping-on. For this purpose, the centering hooks 5 are inserted into suitable recesses 15 on the conductive contact element 10, see FIG. 31. In FIG. 30 a terminal with a conductive contact element 10 is shown, to which an insulating element 1 has been attached.

The invention relates to an insulating element 1, which is fastened in a variant by means of compact snap hooks 3 to a conductive contact element 10, such as a clamping pressure piece. The recesses 11 in the clamping pressure piece 10, in which engage the snap hooks 3 are designed very narrow to avoid miscarriage. In addition, they are very far off-center, so arranged on the edge of the clamping pressure piece 10. A possibly inserted conductor is then not centered to the installation device 20 but off-center, which would be noticed by the user. As a result of the eccentricity, the recesses 11 are also completely or partially covered by the clamping frame 16 located behind the clamping pressure element 10, which additionally prevents the incorrect insertion. The insulating element 1 is fastened only to the clamping pressure piece 10 and does not require a guide on its left and right side in the housing 21 of the installation device 20, which allows the insulating element 1 to be made narrower than the opening 22 in the housing 21. Thereby, a mounting of the insulating member 1 after installation of the terminals 18 in the housing 21 is still possible, since the insulating elements 1 are mounted only from the outside to the clamping pressure piece 10.

In another variant, an insulating element 1 is provided, which is fixed by means of a compact bayonet lock 4 on the clamping pressure piece 10. Possible here is a Drehbaj onettverschluss 4b or a linear sliding bayonet closure 4a. The insulating element 1 is firmly on

Clamping pressure piece 10 mounted. The bayonet contour takes over both the positioning of the insulating element 1 on the clamping pressure piece 10, as well as the stable tight fit, which prevents the falling of the insulating element 1 from the clamping pressure piece 10. Therefore, the insulating member 1 does not need a guide on its left and right sides in the housing 21 of the installation device 20, which makes it possible to make the insulating element 1 narrower. This is an assembly after installation of the Clamps 18 in the housing 21 possible because the insulating elements 1 are mounted from the outside to the clamping pressure piece 10. The insulating member 1 has at its the clamping pressure piece 10 facing side 6a at least one hook contour. This is the clamping pressure piece 10 through the at least one corresponding mating contour, ie, the recess 11, inserted and secured by turning or pushing against loosening. Secured means that in addition one or more fastening elements configured as pins engage in corresponding openings 15 of the clamping pressure piece 10 and thereby produce a rotation.

/ Prevent sliding movement against the assembly movement.

The connection of the insulating element 1 and the conductive contact element 10 by means of compact snap hooks 3 or by means of a compact but reliable bayonet closure allows the insulating element 1 to be securely mounted on the installation device 20 without having to guide it to housing walls 21. As a result, the insulating element 1 can be mounted in the housing 21 after installation of the clamps 18, ie very late in the production process. This offers the advantage that it is possible to generate the variant variety, the additional insulation element 1 as Umgreifschütz only by the end of the production process by sales-promoting additional features for higher-priced installation equipment 20, and so the main part of manufacturing lean, So to keep low variation.

In addition, it is avoided that the device housing 21 in variants with insulating 1 requires a wide guide for the conductive contact element 10 and the insulating member 1, while it requires only a narrow guide for the conductive contact element 10 alone in variants without insulating 1. This saves housing variants and costs through additional housing tools.

Due to the narrow recesses 11 in the conductive contact element 10, which are mounted far outside and at least partially covered by the small clamping frame 16, a faulty stuck with cheaper series without insulating 1 effectively prevented.

Due to the narrow, far off-center recesses 11 in the conductive contact element 10, the remaining residual cross section of the conductive contact element 10 is also maximum. This is advantageous for the transmission of high mechanical loads and currents.

The conductive contact element 10 is designed so that the areas 13 which are engaged behind by the snap hooks 3 or the bayonet wings, are embossed, that is, the conductive contact element 10 is at these areas 13 so thin that these areas 13 and the angled tips the snap hook 3 and the bayonet wing together are not thicker than the sheet thickness of the conductive contact element 10 itself.

Reference sign list

1 insulating element

2 locking or snap device 3 spring-trained snap hooks

4 bayonet clasp

4a Schiebebaj onettverschluss

4b rotating bayonet catch

5 fastener 6 plate-shaped body

6a first side of the plate-shaped main body

6b second side of the plate-shaped base body

7 openings in the plate-shaped base body of the insulating 8 torsion region of the snap hook

9 Bending area of the snap hook

10 conductive contact element

11 recesses 12 first side of the conductive contact element

13 embossed area

14 second side of the conductive contact element

15 opening

16 clamping frame 17 clamping screw

18 clamp

20 electrical installation device

21 housing 22 opening

Claims

claims

1. insulating member for covering a conductive contact element of an electrical installation device, wherein the conductive contact element is disposed behind an opening in the housing of the electrical installation device, characterized in that the insulating element (1) a latching or snap device (2) for engaging behind at least one area of the conductive contact element (10) and for securing the insulating element (1) to the conductive contact element (10).

2. Insulating element according to claim 1, characterized in that the shape of the insulating element (1) is smaller than the opening (22) in the housing (21) of the electrical

Installation device (20), so that the insulating element (1) through the opening (22) on the conductive contact element (10) can be fastened.

3. Insulating element according to claim 1 or 2, characterized in that the latching or snap-in device (2) has at least one spring-elastic snap hook (3).

4. Insulating element according to claim 1 or 2, characterized in that the latching or snap-in device (2) has a Baj onettverschluss (4).

5. Insulating element according to claim 4, characterized in that the Baj onettverschluss (4) as a

Schiebebaj onettverschluss (4a) or as a Drehbaj onettverschluss (4b) is formed.

6. Insulating element according to one of the preceding claims 4 or 5, characterized in that the insulating element (1) has at least one fastening element (5) for engagement in an opening (11) of the conductive contact element (10).

7. Insulating element according to one of the preceding claims 1 to 6, characterized in that the insulating element (1) has a plate-shaped base body (6) and that the latching or snap device (2) on a first side (6a) of the plate-shaped base body (6 ) is arranged.

8. Insulating element according to claim 7, characterized in that the latching or snap-in device (2), in particular the at least two spring-elastic snap hooks (3), are arranged on the edge of the plate-shaped base body (6).

9. Insulating element according to one of the preceding claims 7 or 8, characterized in that on the second side (6b) of the plate-shaped base body (6) at least one gripping device for gripping the insulating element (1) is provided.

10. Insulating element according to one of the preceding claims 7 to 9, characterized in that the plate-shaped

Base body (6) of the insulating element (1) openings (7), which are provided at the foot of the latching or snap device (2).

11. Conductive contact element of a terminal of an electrical installation device, wherein the conductive contact element is disposed behind an opening in the housing of the electrical installation device, characterized in that the conductive contact element (10) at least one recess (11) for passing a locking or

Snap-on device (2) of an insulating element (1) according to one of claims 1 to 10.

12. Conductive contact element according to claim 11, characterized in that the at least one recess (11) are provided on the edge or on the contour of the conductive contact element (10).

13. Conductive contact element according to claim 11, characterized in that the at least one recess (11) for the passage of a bayonet closure (4) is formed.

14. Conductive contact element according to one of the preceding claims 11 to 13, characterized in that the conductive contact element (10) on the opening (22) in the housing (21) of the electrical installation device (20) facing away from (12) at least one embossed Area (13) for receiving a portion of the latching or snap device (2).

15. Conductive contact element according to claim 14, characterized in that the at least one embossed region (13) inclined to the opening (22) in the housing (21) of the electrical installation device (20) facing side (14).

16. Conductive contact element according to one of the preceding claims 11 to 15, characterized in that the conductive contact element (10) has at least one opening (15) for receiving a fastening element (5) of the insulating element (1).

17. Conductive contact element according to one of the preceding claims 11 to 16, characterized in that the conductive contact element (10) constitutes a clamping pressure piece of a clamp.

18. Electrical installation device, comprising at least one opening and arranged behind the at least one opening in the housing of the electrical installation device terminal with a conductive contact element, characterized in that the conductive contact element (10) is designed according to one of claims 11 to 17.

19. Electrical installation device according to claim 18, characterized in that the conductive contact element (10) has an insulating element (1) according to one of claims 1 to 10.