Mechanical switching contact

FIELD: electrical engineering.

SUBSTANCE: proposed mechanical switching contact designed for double-pole change-over has holder made of insulating material that accommodates fixed contacts alternately coming in contact with contact holder; the latter, in its turn, mounts on its loose end turning lever carrying on its end respective conducting contact member. Mechanical switching contact is made in the form of modular structural unit that can be arbitrarily assembled. It has minimal quantity of structural components for double-pole switching and can be easily built in load switch without additional adjustment and matching.

EFFECT: simplified design, reduced space requirement.

4 cl, 4 dwg

 

The invention relates to a mechanical switching contact for a bipolar switch, in particular in the load switch speed switch.

From the document WO 95/24724 known switching device for load switch speed switch, which contains a mechanical main switch contact and mechanical resistive switching contact. At the same time as the main switching contact and the ohmic switching contact are composed of two interconnected managed separate breaker contacts, and accordingly a single normally closed contact as the main switching contact and the ohmic switching contact, electrically connected with the first side of the load switch, and the other a separate normally closed contact as the main switching contact and the ohmic switching contact, electrically connected with the second side of the load switch. In this device, a separate normally closed contacts of the main switching contact may connect the first switch, and a separate normally closed contacts resistive switching contact may connect the second switch. Thus, there is a correspondingly double-pole switch is Uchenie through two switches.

From the document WO 96/30922 known load switch speed switch, in which the possibility of technical realization of such a two-pole switch is provided by a lever mechanical contacts, rotating around a point of rotation. Additionally, there are spring-loaded crank levers affecting mounted for rotation mechanical contacts so that they can take two switching position beyond the dead point. Both the movable contact are separated for each phase in the same horizontal plane with the outer side of the load switch.

It is a known mechanical switching contacts for two-pole tripping is a complex and technically expensive, requires accurate adjustment after installation and takes up relatively much space.

Therefore, the objective of the invention is to create a structurally simple and includes a minimum number of easily assembled structural elements of a mechanical switching contact for a bipolar switch, made in the form of a modular Autonomous construction unit, which may be integrated in the load switch without additional adjustment and negotiation, taking up the minimum for the e space.

This problem is solved due to mechanical switching contact to the distinctive features according to claim 1 of the claims. Dependent items include particularly advantageous variants of the invention.

A significant advantage of the mechanical switching contact according to the invention is extremely compact and simple design. Due to the few elements as the main mechanical switching contact and the ohmic mechanical switching contact can be made as identical modular structural components. For the main switching contact, as for resistive switching contact, in use, therefore, the same modular mechanical switching contacts; and the main switching contact and the ohmic switching contact of each phase can be implemented in the simplest way as a common structural site of two identical interconnected modular switching contacts according to the invention.

Below the invention is explained in more detail with the help of illustrative example with reference to the following drawings:

figure 1 - mechanical switching contact according to the invention in a perspective image

figure 2 - kontaktdaten only one presented to f is 1 switching contact,

figure 3 - the combination of the two switching contacts according to the invention in accordance with figure 1 as a single-phase constructive node for the main switching ohmic contact and the switching contact

4 is a diagram of the load switch speed switch implemented using mechanical switching contacts according to the invention.

First, more detail to clarify presented in figure 1 mechanical switching contact according to the invention. It contains the holder 1 made of insulating material on which are located below the structural elements. The holder 1 of insulating material provided with parallel spaced longitudinal rails 1.1,1.4... in the form of through holes, which are described below. In addition, it includes two seats 1.5 and 1.6 for support, which was installed using the anchor bolt 3 with the possibility of rotation of kontaktdaten 2. In the field of both 1.5 and 1.6 for support provided by the side of the spherical mounting 1.7 and 1.8, about which more details below. Further, in the holder 1 made of insulating material molded fastening 1.9,1.12... under the contacts, which are placed in the fixed contacts 4...7.

Kontaktdaten 2, shown separately in figure 2, is installed with the possibility of rotation is in the holder 1 made of insulating material by means of a support 2.1 and the above-mentioned anchor bolt 3. It contains a pivotable around a support 2.1 turning the lever 2.2, which, in turn, at its free end fastening 2.3 under the contact. This mount 2.3 under the contact consists of through holes running parallel to the longitudinal axis of the support 2.1 or anchor bolt 3. Side in the mounting area 2.3 under the contact molded mounting 2.4 or 2.5 under the arrester, also in the shape of a hemisphere. On the other opposing free end kontaktdaten 2 has a control circuit 2.6. In attachment 2.3 under the contact is electrically conductive contact element 8, with both free ends of the contact rollers 8.1 or 8.2. These contact rollers 8.1 and 8.2 interact either with the stationary contacts 4 and 5 on one side of the holder 1 made of insulating material, either with fixed contacts 6 and 7 on the other side of the holder 1 made of insulating material, depending on which way will kontaktdaten around 2 2.1 support.

Between contacttitle 2 and the holder 1 made of insulating material installed on both sides of the two telescopic rails 9 and 10. These telescopic guides 9 and 10 consist of two digemid one into the other tubes. On one free end they have respectively hemisphere 9.1 or 10.1, which they rely, respectively, in one of the spherical to the of apleni 1.7 or 1.8 holder 1 made of insulating material. On the other free end of the telescopic rails 9, 10 are respectively spherical arrester, which they, in turn, are guided respectively in one of the two fasteners 2.4 or 2.5 under the arrester on both sides of contacttitle 2. Additionally around the first telescopic guide 9 includes a spring 11 compression preload, which is also based on contacttitle 2 between the spherical mount 1.7 and mount 2.4 under the arrester. Around the second telescopic rail 10 similarly there is another spring 12 compression preload, which, in turn, rests between the spherical mount 1.8 and the other counter 2.5 on contacttitle 2.

In the position represented in figure 1, both of the fixed contact 4 and 5 is also connected via the contact rollers 8.1 and 8.2, which is electrically connected via a contact element 8. Thus, if the switch load roller or the like is sent to the contour 2.6 control and rolled on him, the whole kontaktdaten rotates around its support 2.1 downward force of the springs 11 and 12 compression preload. As a result both of the contact roller 8.1 and 8.2 connect the opposite fixed contacts 6 and 7. Thanks bilateral telescopicallybecause 9 and 10 in connection with these springs 11 and 12 is implemented in the easiest way locking mechanism, which, firstly, does not allow kontaktdaten 2 took an undefined intermediate position, and, secondly, provides a sufficient contact pressure contact rollers 8.1 and 8.2 to the corresponding fixed contacts. Lateral hemisphere 9.1 or 9.2 of these telescopic rails 9 or 10, based respectively in spherical mounts 1.7 or 1.8 holder 1 made of insulating material, act as three-dimensional spatial reference node. Telescopic guides 9 and 10 change when switching, ie when you turn contacttitle 2, as its length - so and telescopic design, and its spatial performance.

Figure 3 shows two switching contact according to the invention, forming a complete mechanical switching node for a single phase load switch. Here one switching contact I acts as the main switch contact and the other switching contact II as resistive switching contact. The same elements are denoted by the same position - it is obvious that both modules are of identical construction. Reasons of clarity in this image, not all of the described parts are supplied by symbols. Figure 3 same as figure 1 for separate switching contact selected unbalanced is CNA diagram of the control circuit 2.6 brush holder 2. Here both the switching contact I and II are shifted relative to each other at 180°so that both control path facing each other. However, this is only one of many possible variants. The connection of both switching contacts I and II is carried out by means of a common connecting bolts 13...16, which pass through the respective longitudinal rails 1.1...1.4 and davinciaudio on both sides. Next, figure 3 shows that the respectively opposite fixed contacts 4 and 6 of each of the switching contact I and II are electrically connected via a connecting cable 17, 18. Further, it is seen that adjacent pins 5 and 7 of each of the switching contact on one side electrically connected among themselves by means of the first conductive connection 19 and respectively adjacent fixed contacts 7 and 5 on the other side with another conductive connection 20. Thus implemented the two-pole switch in the load switch on the manual switch.

This is again presented in figure 4: the top diagram shows schematically the speed selector switch, performing a preliminary search, without the power consumption, the new branch n+1 winding speed switch that you want to switch, while still electrically is clucene former branch of the n windings. Below shows both sides a and b of the load switch, between which should be switching under load without breaking. Also shown below is the mechanical switching contacts, in particular in the left branch, the main switching branches, the main switching contacts SK. The indices a and b denote respectively the identity of the corresponding individual contact to the a-side or the load switch. In the right branch, branch resistor, similarly presents resistive switching contacts HKM; the same applies to indexes. The dashed line shows the part of the circuit, which is implemented technically both mechanical switching contacts I or II according to the invention. Below, in the main switching branches shows the first vacuum switching sequentially enabled cell SKV for removal of the load, and in the branches of the resistor presents a series connection of the intermediate resistor and the second vacuum switching cell HKV for removal of the load L.

The list of entries on drawings:

1 Holder of insulating material

1.1 Longitudinal guide

1.2 Longitudinal guide

1.3 Longitudinal guide

1.4 Longitudinal guide

1.5 Place under support

1.6 Place under support

1.7 Spherical fastening

1.8 Sherice is some fastening

1.9 Fastening under contact

1.10 Mount under contact

1.11 Mount under contact

1.12 Mount under contact

2 Kontaktdaten

2.1 Support

2.2 Rotary lever

2.3 Mounting under contact

2.4 Mount under the arrester

2.5 Mount under the arrester

2.6 control circuit

3 Anchor bolt

4 Stationary contact

5 Stationary contact

6 Stationary contact

7 Stationary contact

8 Contact

8.1 Contact roller

8.2 Contact roller

9 Telescopic guide

9.1 Hemisphere

10 Telescopic guide

10.1 Hemisphere

11 Spring

12 Spring

13 connecting bolt

14 connecting bolt

15 connecting bolt

16 connecting bolt

17 connecting cable

18 connecting cable

19 Conductively connected

20 Conductive connection

1. Mechanical switching contact for a bipolar switching, in particular, the load switch speed switch, containing

the holder (1) of insulating material on which are arranged in pairs near each other, and pairs of opposite fixed contacts(4, 5; 6, 7),

on the holder (1) of insulating material is mounted for rotation kontaktdaten (2)having on one of two free is different ends of the swivel arm (2.2) and on the other free end a control circuit (2.6),

on the swivel arm (2.2) is electrically conductive contact element (8), which, depending on the possible end positions of contacttitle (2) in a stationary position is made with the possibility of conducting connection with each other arranged respectively in pairs next to each other on one of both sides of the stationary contacts 4 and 5 or 6 and 7),

on both sides of the pivot arm (2.2) provide a telescopic guides (9, 10), each with a spring (11, 12) compression supported respectively by one free end on kontaktdaten (2) and the other free end on the holder (1) made of insulating material so that kontaktdaten (2) is under the action of the latch and configured to, when the impact force on a control circuit (2.6) abruptly turn from one fixed position to another fixed position.

2. Mechanical switching contact according to claim 1, characterized in that the telescopic guides (9, 10), each with a spring (11 or 12) compression, based respectively one of its free end in the bracket (2.4, 2.5) under the arrester on contacttitle (2), respectively, and its other free end on the spherical mount (1.7, 1.8) on the holder (1) made of insulating material so that policetraining spatial reference node at the points of support.

3. Mechanical switching contact according to claim 1 or 2, characterized in that the holder (1) of insulating material includes longitudinal rails (1.1-1.4) so that at least two identical mechanical switching contact can be modularly connected.

4. Mechanical switching contact according to any one of claims 1 to 3, characterized in that the contact element (8) is fixed in the middle of the bracket (2.3) under contact on the rotary lever (2.2) and both free ends is respectively on the contact roller (8.1, 8.2)communicating respectively with one of the stationary contacts (4-7).



 

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