EP2736063A1 - Insulation structure for the contact set of a relay - Google Patents

Abstract

The relay has a contact set arranged in a hood (2) and a spring gantry (3), and a contact series separated by an insulation structure (1). The contact series includes fixed, hood-side bars (5, 5 ') and a fixed, spring gantry-sided bar (6) directed and set opposite to each other. Movable actuators (4, 4 ') are arranged in an interstice between the hood and the spring gantry. The hood-sided bars are arranged parallel to each other and at a distance to each other, and the spring gantry-sided bar is engaged between the hood-side bars.

Description

The invention relates to an insulation structure for the contact set of a relay according to the preamble of claim 1.

In such relays, the contact rows of the contact set are separated from each other either only by air gaps or by movable or fixed ribs. Between the ribs usually an actuator is arranged, which is T-shaped or U-shaped and is supported on the armature and the moving parts.

The EP 0 634 767 B1 discloses a relay with a contact set. With the FIG. 2 the relay is shown with a hood and a spring bracket.

Two fixed webs are arranged on the hood and two fixed webs are arranged on the spring bellows underneath. Between these webs, a movable horizontal actuator is arranged, which has a vertical wing. The vertical wing is arranged between the webs, wherein it partially covers the webs of the hood and the spring bracket. This achieves insulation between the contact rows.
It is therefore known in the prior art that both the hood and the spring bracket have fixed vertical webs, with a movable actuator having at least one vertical wing therebetween. The desired isolation distance is thus achieved by the fixed webs and the movable vertical wing of the actuator.

With the subject of EP 0 192 928 A1 An electromagnetic relay has become known according to the preamble of the independent claims 1 to 3, in which the hood-side webs 25 engage over the spring-beam-side webs 23. However, the actuator is disposed outside of this space between the hood side and the spring block side webs on the side wall of the hood. This results in a very expansive structure, because the actuator are arranged outside of the overlapping webs, resulting in a very wide housing structure. The drive of the actuator is disposed between the webs in the central interior of the spring bracket, which is associated with the disadvantage that the housing structure is very wide. In the actuated on the contact springs actuator, the contacts are arranged. The actuator is therefore also contact carrier. The actuator therefore can not provide any additional insulation effect between the active and the passive contact springs. In the case of an undesired contact erosion in the area of the contact sets, undesired malfunctions occur, eg. B. to the contact closure within a contact.

The one concerning a similar electromagnetic relay EP 0 954 001 A1 shows only a very short projecting into the interior of the relay hood-side web 71, which engages in a v-shaped upwardly opening groove 49 of two short, arranged on the upper side of the spring bracket V-shaped webs 63. This has the disadvantage that there is no protective effect at all of the contacts through the hood-side and the spring-block-side webs.

From the DE 34 37 544 C2 a low voltage relay has become known, in which only between two contact chambers, a middle partition 26 is arranged, which engages with its lower free end in an associated, V-shaped upwardly opening groove between two spring bracket side legs of a spring bracket.

In each contact chamber, a contact is arranged in each case. The actuator is designed as a galvanically conductive element, and the contacts in the two contact chambers are therefore galvanically connected to each other. Although the middle partition wall 26 also has the task of preventing penetration of contact erosion from one side to the other, but because the contacts of one chamber with the contacts of the other chamber are galvanically connected, it depends on an isolation between the contacts one side the chamber and the contacts on the other side of the chamber not, because these are galvanically interconnected contacts.

The invention, however, assumes that in a relay on the spring box side a plurality of galvanically mutually separated contacts are arranged, which lead a variety of potentials and which are optionally designed as openers and / or closers. It is important, therefore, that is always avoided in the different, designed as an opener or closer, different potentials leading contacts that the potential of one contact to the potential of the other contact, for. B. by an isolation bridging (conductivity bridge) is deported. Such a conductivity bridge can, for. B. arise by a contact between the contacts resulting contact burn, which is inadvertently and undesirably carried off in the direction of the other contact.

This is where the invention begins, which prevents such carry-over of contact erosion in the contacts of a relay carrying different potentials.

Object of the present invention is to achieve an arrangement in the smallest space, which meets in particular the requirement for the insulation in the smallest space between the contact rows of the contact set of a relay.

To solve the problem, the invention is characterized by technical teaching of the independent claims 1 to 3.

An essential feature of the invention is that the shape of the actuator with wings attached thereto now ensures that the insulation between the contacts is improved. Thus, if burning takes place in the area of the actuator and the contacts actuated by the actuator, the wings provide cover for the mutually overlapping hoods and spring block-side webs from the side, so that contact erosion on the contact sets can not penetrate into the insulation gap, which results from the mutually overlapping hoods and spring block-side webs.

Thus, this gap, which results from the intermeshing hood-side and spring-bracket-side webs, not burdened with a contact erosion, which could lead to a reduction of the isolation distance.

The isolation distance, which results from the labyrinth-like interlocking hoods and spring-beam-side webs, is therefore not reduced or even bridged by a penetration of contact which penetrates there.

This is a significant advantage of the invention, because now in a confined space, a high isolation distance can be generated because it is prevented from the outset by arranged on actuators wings that caused by the contact sets on the part of the actuator Kontaktabbrand in the insulation gap between the interlocking hoods and spring-block-side webs passes.

The invention describes in several independent claims, as this insulation structure is formed with interlocking hoods and spring block side webs. Essentially, it is a labyrinthine structure, so that in each case one or two webs are arranged on the hood side and the one or two hood-side webs always engage in an opposite structure of one or two spring-block-side webs, wherein the webs over a very overlap one another and cover practically all of the mounting space between the bottom of the hood and the top of the spring bracket.

The wings of the actuator are then arranged either in extension to the flight of the hood-side or the spring-block-side webs, so that so optimum lateral coverage of the entire mounting space between the bottom of the hood and the top of the spring bracket is achieved.

Instead of an aligned arrangement of the wings of the actuator to the plane of the webs, it may also be possible in another embodiment that the wings of the actuator are not arranged in a plane, but in a lateral distance to the hood side or spring-beam-side webs, but still optimally cover from the side.

Through all the described embodiments, an optimal lateral coverage of the important insulation gap between the interlocking hoods and spring block side webs is thus achieved, by the inventive wings of the actuator, the penetration of arranged on the side of the actuator contacts and a contact erosion there in the Avoid isolation gap.

An essential feature is that for insulation between the contact rows of the contact set, the hood has at least one fixed webs and the spring bracket also has at least one fixed web. The movable actuator is arranged outside the insulation structure.

The insulation structure therefore consists in a first embodiment of two mutually parallel and mutually spaced hood-side webs and a spring bracket-side web which engages between the hood-side webs, and thus provides a favorable isolation or in a second embodiment, the insulation structure of two, mutually parallel and to each other spaced spring bracket side webs and a hood-side web which engages between the spring-beam-side webs.

It is therefore essential that the actuator is not part of this insulation structure, but is arranged outside of the insulation structure.

Thus, an advantageous embodiment of the present invention on the hood on two vertical, spaced, solid webs and the spring bracket on a vertical, fixed web. The individual web of the spring bracket is in this case arranged between the vertical webs of the hood. The vertical lengths of the webs are formed so that they cover each other, laterally.

The vertical web of the spring bracket thus immersed between the two webs of the hood. As a result, long isolation distances between the interlocking webs of the hood and the spring bracket are formed without the actuator participates in the insulation. It is therefore no longer important that the actuator with optionally molded wings must increase the isolation distance, as is the case in the prior art.

What is new about the invention is that the actuator is no longer guided between the two webs of the hood or spring suspension. This results in the significant advantage that is achieved by the special arrangement of the fixed webs of the hood and the spring bracket, independent of the actuator good insulation in the smallest space.

Of course, the arrangement can also reflect, so that the two webs of the hood can also be arranged on the spring bracket and the hood has the individual web, which is arranged between the two webs.

Important in the invention is that the at least one movable actuator does not run between the webs, but separated by the single web, which is arranged either on the hood or on the spring bracket.

The immersion depth of the individual, opposing webs must be designed so that always a good fulfillment of the requirement is guaranteed. Of course, the height of the bars can vary.

The movable actuator is not involved in the construction of the insulation. Thus, the two webs and the projecting from below individual web form an insulation, wherein the at least one actuator for a row of contacts outside this isolation is arranged to be movable.

It is important that no moving parts are involved in the construction of the insulation, as is known in the prior art.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the summary, in particular the training shown in the drawings, are claimed as essential to the invention, as far as they are new individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

• Figur 1: schematische Darstellung eines Isolationsaufbaues nach dem Stand der Technik mit zwei Stegen
• Figur 2: schematische Darstellung eines Isolationsaufbaues nach dem Stand der Technik mit vier vertikalen Stegen
• Figur 3: schematische Darstellung eines Isolationsaufbaues nach der Erfindung nach einem ersten Ausführungsbeispiel
• Figur 4: schematische Darstellung eines Isolationsaufbaues nach der Erfindung nach einem zweiten Ausführungsbeispiel
• Figur 5: schematische Darstellung eines Isolationsaufbaues der Erfindung nach dem dritten Ausführungsbeispiel
• Figur 6: schematische Darstellung eines Isolationsaufbaues der Erfindung nach einem vierten Ausführungsbeispiel

Show it:

• FIG. 1 : schematic representation of an insulation structure according to the prior art with two webs
• FIG. 2 : Schematic representation of a prior art isolation structure with four vertical lands
• FIG. 3 : schematic representation of an insulation structure according to the invention according to a first embodiment
• FIG. 4 : schematic representation of an insulation structure according to the invention according to a second embodiment
• FIG. 5 : schematic representation of an insulation structure of the invention according to the third embodiment
• FIG. 6 : schematic representation of an insulation structure of the invention according to a fourth embodiment

The illustrated drawings according to the invention according to the FIGS. 3 to 6 show possible first embodiments of the arrangement of hood-side and spring-block-side webs.

However, it is not shown in the drawing that the web arrangement shown here can be exactly the opposite. If you look at the drawings after the FIGS. 3 to 6 turns upside down and assumes that in the upside down drawings always the top 2 is arranged and below the spring bracket 3, so this is another embodiment of all drawings according to the FIGS. 3 to 6 that should also be included in the claims.

As a result, this means that in the FIGS. 3 to 6 illustrated diagrammatic embodiment of the hoods and spring-clip-side webs can be reversed, so that the reference numerals 2 and 3 are replaced with each other.

Just like that FIG. 3 in comparison to FIG. 4 the kinematic reversal of the web arrangement shows, this can also be done in the Figures 5 and 6 be performed. It is therefore in the Figures 5 and 6 not shown the kinematic reversal, but should fall within the scope of the invention.

With the FIG. 1 An insulation structure for a relay according to the prior art is shown. The insulation structure 1 consists essentially of a hood 2 and an opposite spring bracket. 3

On the hood 2, a vertically downwardly projecting first web 5 is arranged. The opposite spring bracket has a vertically upwardly in the direction of the hood extending web 6. Between the two components of the hood 2 and the spring bracket 3 and the associated webs 5 and 6, a movable actuator 4 is arranged. The actuator 4 has two vertical wings 7, which engage around the two webs 5 and 6. In the present embodiment, the insulation of the contact set by the two webs 5 and 6, and the two wings 7 of the movable actuator 4 is achieved.

With the FIG. 2 another embodiment of the prior art is shown. Here are the wings 7 of the actuator between the vertical webs 5 and 5 'of the hood 2, and the webs 6 and 6' of the spring bracket 3, is arranged movable. This reflects the reversal of the embodiment FIG. 1 because the wings 7 and 7 'surround the individual webs 5 and 6 there.

The at least one actuator 4 is part of the insulation structure and acts as an insulating separation between the two contact rows 11, 12. It is moved in the direction of arrow 10 in the direction perpendicular to the plane of the figures. The actuator 4 is in the prior art in the insulation structure with its wing 7 after FIG. 2 or the wings 7, 7 'after FIG. 1 disadvantageously integrates and degrades the creepage and insulation properties of the relay, because the insulating overlap of the stationary, oppositely directed hood and spring block side webs is deteriorated by the actuator 4 movable therebetween.

With the FIG. 3 a first embodiment of the invention is shown. Here, the hood 2 and the spring bracket 3 are arranged parallel and spaced from each other.

In all embodiments of the FIGS. 3 to 6 on the other hand, it is shown that the fixed hood and spring block side webs form a larger overlap, because the actuator is arranged outside of this overlap region. Thus, the insulation properties of such a relay can be significantly improved

In FIG. 3 is shown as an exemplary embodiment that on the right side of the insulation structure, a right row of contacts 11 and on the opposite side of the insulation structure, a left row of contacts 12 are arranged. The contacts of a contact row 11, 12 extend perpendicular to the plane of the drawing.

In a first embodiment of the invention, it is provided in all embodiments that the hood-side webs are formed directly on the underside of the hood and forms a material integral with this part. In a second embodiment of the invention, it is provided for all subsequent embodiments that the hood-side webs are not formed directly on the underside of the hood itself, but that these webs are attached to a separate carrier and the bottom of the hood is smooth and on the relay is plugged.

The same designs as for the hood-side webs also apply to the spring-beam-side webs. These, too, do not have to form a material-integral part with the spring bracket in solution. Rather, they can be arranged on a separate carrier and executed separately from spring bracket.

The focus of the invention is accordingly the improvement of the insulation capacity between the 1st contact row 11 and the oppositely arranged second contact row 12.

The hood 2 has two vertically extending webs 5, 5 ', which extend in the direction of the spring bracket 3. On the opposite spring bracket 3, a single vertically extending web 6 is arranged, which extends between the two webs 5, 5 'of the hood 2. The web 6 thus emerges between the two webs 5 and 5 '.

With the present embodiment, the isolation is achieved only by the fixed webs 5 and 5 'and the dipping web 6.

The at least one movable actuator 4, 4 'is for the first time outside of the insulation structure, which is formed by the webs 5, 5' and 6, arranged. The movable actuator 4, 4 'preferably has at least one vertical wing 8, 8'.

New in the present invention is now the first time that the insulation structure is formed purely by the webs 5, 5 'and the immersed web 6. Outside this isolation structure then the movable actuator 4, 4 'are arranged with the wings 8 and 8'.

With the FIG. 4 another embodiment of the invention is shown. The exemplary embodiment is a mirrored variant of the embodiment according to FIG. 3 ,

Starting from the hood 2, a vertical web 5 now extends downwards in the direction of the parallel spring clip 3. The spring clip 3 has two vertical webs 6, 6 ', which extend upwards in the direction of the hood. The webs 6, '6 are arranged so that they comprise the web 5. The web 5 thus emerges between the two webs 6, 6 '. This ensures the insulation between the contact rows.

The movable actuator 4, 4 'are in the structure essential to the invention outside of the insulation structure, which is formed by the webs 5, 6 and 6', arranged.

In a further preferred embodiment, the movable actuator 4, 4 'has a vertical wing 8, 8', which is formed on the actuator and serves to improve the insulation.

With the FIG. 5 a further embodiment essential to the invention is shown. Here, the hood 2 has two vertically downwardly extending webs 5, 5 ', which extend in the direction of the parallel to the hood extending spring bracket 3. The spring bracket 3 has a single web 6, which extends vertically in the direction of the hood and between the two webs 5, 5 'is immersed. The embodiment of FIG. 3 corresponds to the embodiment of FIG. 5 , only that now on the movable actuator 4, 4 'at least one additional wing 9, 9' is formed.

With the FIG. 6 another embodiment of the invention is shown. New in the embodiment according to FIG. 6 is that the actuator 4, 4 'next to or at the height of the webs 5, 5' is arranged.

In the embodiments of the Figures 3 . 4 and 5 are movable actuator 4, 4 'arranged at the height of the respective individual web 5 or 6. In the embodiment of the FIG. 6 the movable actuators 4, 4 'in each case at the height of the doubly formed webs 5, 5' or 6 and 6 'are arranged.

Essential in the invention is that the insulation structure is achieved only by fixed webs. The movable actuator is generally not used for insulation and is arranged outside of the invention essential isolation structure.

drawing Legend

1

insulation structure

2

Hood

3

spring bracket

4

Actuator (4, 4 ')

5

Footbridge (5, 5 ')

6

Footbridge (6, 6 ')

7

Wings (7, 7 ')

8th

Wings (8, 8 ')

9

Wings (9, 9 ')

10

arrow

11

Contact number

12

Contact number

Claims (10)

Relay with a contact set, which is arranged in a hood (2) and a spring bracket (3), wherein the rows of contacts by an insulation structure (1) are separated, which consists of at least one fixed, hood-side web (5, 5 ') and at least one oppositely directed, fixed, spring-block-side web (6, 6 ') and further at least one movable actuator (4, 4') in the space between the hood (2) and the spring bracket (3) is arranged, wherein the insulation structure (1) consists of two mutually parallel and mutually spaced hood side webs (5, 5 ') and a spring bracket-side web (6) which engages between the hood-side webs (5, 5'), characterized in that the actuator (4, 4 ') Wings (8, 8 ', 9, 9') are formed, whose longitudinal extent is arranged parallel and in alignment with the plane of the webs (5, 5 ', 6, 6'). (Fig. 3, 5. Relay with a contact set, which is arranged in a hood (2) and a spring bracket (3), wherein the rows of contacts by an insulation structure (1) are separated, which consists of at least one fixed, hood-side web (5, 5 ') and at least one oppositely directed, fixed, spring-block-side web (6, 6 ') and further at least one movable actuator (4, 4') in the space between the hood (2) and the spring bracket (3) is arranged, wherein the insulation structure (1) consists of two mutually parallel and mutually spaced spring-block-side webs (6, 6 ') and at least one hood-side web (5) which engages between the spring-beam-side webs (6, 6'), characterized in that the actuator (4, 4 ' ) Wings (8, 8) are formed, the longitudinal extent of which is parallel and aligned with the plane of the webs (5, 5 ', 6, 6'), (Fig. 4). Relay with a contact set, which is arranged in a hood (2) and a spring bracket (3), wherein the contact rows are separated by an insulation structure (1), which consists of at least one fixed, hood side Web (5, 5 ') and at least one oppositely directed, fixed, spring-bracket-side web (6, 6') and further comprises at least one movable actuator (4, 4 ') in the space between the hood (2) and the spring bracket (3 ), wherein the insulation structure (1) consists of two mutually parallel and mutually spaced hood side webs (5, 5 ') and a spring bracket side web (6) which engages between the hood side webs (5, 5'), characterized in that wings (8, 8 '; 9, 9') are formed on the actuator (4, 4 ') whose longitudinal extension is arranged parallel to the plane of the webs (5, 5', 6, 6 ') (FIG ). Relay with a contact set according to one of claims 1 to 3, characterized in that the actuator (4, 4 ') at the level of the at least one web (5) or the at least one web (6) is arranged. Relay with a contact set according to one of claims 1 to 4, characterized in that the actuator (4, 4 ') at the height of the two hood-side webs (5, 5') or at the height of the two spring-clip-side webs (6, 6 ') is arranged. Relay with a contact set according to one of claims 1 to 5, characterized in that the at least one movable actuator (4, 4 ') outside the insulation structure (1) is arranged. Relay with a contact set according to one of claims 1 to 6, characterized in that the length of the one or both hood sides or spring block-side webs (5, 5 ', 6, 6') is selected so that at the lower end of the wings (8, 8 ') of the actuator (4, 4') connect in extension and the length of the one or both hood-side or spring-block-side webs (5, 5 '; 6, 6') plus the length of the wings (8, 8 ' ) of the actuator (4, 4 ') approximately fill the gap between the bottom side of the hood (2) and the top of the spring bracket (3), (Figure 3). Relay according to Claim 7, characterized in that connect to the wings (8, 8 ') further, in the same direction extending parallel wing (9, 9'), (Fig. 5). Relay according to Claim 8, characterized in that the further leaves (9, 9 ') laterally cover the hood-side webs (5) and / or the spring-web-side webs (6, 6'), (Fig. 5) Relay with a contact set according to one of claims 1 to 9, characterized in that the length of the one or both spring-block-side webs (6, 6 ') is selected so that at the end of the wings (8, 8') of the actuator (4, 4 ') in extension connect and the length of the one or both spring-block-side webs (6. 6') plus the length of the wings (8, 8 ') of the actuator (4, 4') the space between the bottom side of Completely fill the hood (2) and the top of the spring block, (Fig. 4).

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