RU54259U1 - ELECTROMAGNETIC RELAY - Google Patents

Abstract

The utility model relates to electrical engineering and can be used at the enterprises of the automotive and electrical industries in the manufacture of electromechanical and electromechanical devices. The task and the technical result consists in creating a relay design in the current dimensions and weight with the ability to work with increased switching currents and at the same time simplifying the design with increasing manufacturability by eliminating the operations of adjusting the contact spring and improving the accuracy of the relative positions of relay nodes: yoke - armature - contact spring - contact details. The relay contains a flat insulating base 1, on the surface of which there is an electromagnetic system with a L-shaped yoke 2. A core 3 is fixed on the yoke 2, on which a frame 4 with a coil of the relay coil 18 is mounted. An anchor 5 is fixed with a contact beryllium spring 6 bronzes with a movable contact - detail 7. On the base 1 is fixed a contact-output plate with two bends 8, 9, pin 10, bearing pad 11, contact rack 12 with a fixed contact - detail 13, which are normally open contact. Similar elements contains the contact-output plate of the node of normally closed contact with

fixed contact - detail 14 with pin 15. In frame 4, elements 16 are mounted for attaching two ends of the relay winding on opposite sides of the side surface of the frame. The relay has a housing 17. In addition, it is provided that the yoke is electrically connected to the contact spring by a movable contact - part by means of contact spot welding 20, which eliminates the operation of adjusting the contact spring and improves the accuracy of the relative positions of the relay nodes - yoke - armature - contact spring - contacts . This achieves the technical result, which consists in simplifying the design and improving manufacturability.

The proposed utility model has the following advantages:

- Simplified product design;

- Simplified manufacturing technology;

- Simplified adjustment of electrical parameters;

- Improved reliability and stability;

- The scope of the relay in new promising has been expanded

car modifications in which the number of energy consumers is increased;

- On the product 75.3777.000 using the proposed

utility model developed design and technological

documentation, production prepared.

Description

The utility model relates to electrical engineering and can be used at the enterprises of the automotive and electrical industries in the manufacture of electromechanical and electromechanical devices.

Known electromagnetic relay 91.3747.000., Manufactured by JSC "Auto Electrical" in Pskov, RF patent No. 2106035. 7 MKI HO1 H 51/00; 51/06.

The relay includes an L-shaped yoke on which a core with a frame and a control winding is mounted. A spring with an anchor and a movable contact - a part are fixed on the yoke. The relay contains fixed contact parts made integrally with the connection pins. The disadvantages of the relay are: insufficient structural rigidity, since all elements are mounted on the frame and there is no base; has limited use due to the fact that it can only be connected by soldering; thus, in particular, it cannot be used in blocks of promising new cars.

Known electromagnetic relay 98.3747.000 manufactured by JSC "Autoelectroarmature" in the city of Pskov, certificate for PM of the Russian Federation No. 11390 7 MKI N 01 N 51/00, 51/06.

The relay consists of a L-shaped yoke, a core is fixed to the yoke. A core with a control winding is installed on the core. A contact spring with a movable contact - part is installed on the yoke. The frame has a flange. A hole is made in the flange in which the pins with fixed contact parts are placed. Pins for connecting the control winding are installed in the holes. The relay has a base in which the frame assembly is installed. The groove in the base is designed to install a noise suppression resistor. The outer part of the yoke is designed in the form of a pin. The contact spring is mounted and welded at anchor. The control winding is wired with pins.

The relay has insufficient rigidity. The insufficient size of the movable contact part does not allow currents to pass more than 20A at a voltage of not more than 12V.

Electrical parameters require adjustment due to the relative position of the movable and fixed contact parts.

Known electromagnetic relay 90.3747.000, manufactured by JSC "Autoelectroarmatura" in the city of Pskov, certificate for PM RF №25368 7 MKI H 01 H 50/00; 50/14; 50/18. This product is taken as a prototype.

The relay contains a flat insulating base, on the surface of which there is an electromagnetic system with a L-shaped yoke. A core is fixed on the yoke, on which a frame with a relay coil winding is installed. An anchor flat spring with a movable contact part is anchored. On the basis of fixed contact output

a plate with two folds, a pin, a support platform, a contact stand with a fixed contact part, which are elements of a normally open contact assembly. Similar elements are contained in the contact-output plate of the normally-closed contact assembly with the fixed contact part with the pin. The contact spring is electrically connected to the yoke with an elastic wire, the ends of which are welded to the yoke and contact spring. The frame has fasteners for the two ends of the coil of the relay coil on opposite sides of the side surface of the frame. In order to ensure that the intersecting sections of both contact racks and their support pads are not in contact, they are made narrower, which provides an insulating gap between them. The relay has a housing. The relay is made in dimensions with a housing without an arm with pins 23.7 mm * 27.2 mm * 38 mm plus, minus 20 percent, weighing 0.03 kg plus, minus 20 percent.

The gap A between the armature and the core at the moment of closing the normally open contact with the coil of the relay coil on is 0.15 mm plus, minus 50 percent.

The relay has the following disadvantages:

- the presence of a return coil spring for the anchor;

- the presence of an elastic wire electrically connecting the contact spring to the yoke, the ends of which are welded to the yoke and contact spring;

- the conclusions of the coil winding and the findings of the resistor are soldered to the sections of the pins located on the upper surface of the flat base, at one point. There is no orientation of the contact spring with respect to the anchor. The spring of the movable contact is made of tin-phosphorous bronze having insufficient electrical conductivity.

These design flaws do not allow working with high switching currents in the range of over 30A to 40A, since the spring and contact parts are heated, and the voltage drop reaches a large unacceptable value.

The relay is not technologically advanced, since there is no reliable orientation when assembling the yoke with the armature, which leads to distortions of the movable contact with the armature. Electrical parameters require constant adjustment.

The objective and technical result consists in creating a relay design in the current dimensions and mass with the ability to work with increased switching currents and at the same time simplifying the design with increasing manufacturability by eliminating the operations of adjusting the contact spring and increasing the accuracy of the relative position of relay nodes: yoke - armature - contact spring - contact details.

The proposed utility model has the following set of essential features having a causal relationship with the technical result.

The electromagnetic relay contains a housing, a flat base, on the surface of which an electromagnetic system is located, including a yoke with a core fixed to it, on which a frame with a relay coil winding is mounted, an armature with a contact spring with a movable contact - part, also containing contact-output plates . Distinctive features of the prototype are the following:

- sections of the contact-output plates located on the upper surface of the flat base, electrically connected to the terminals of the coil winding of the relay, have a groove designed to secure the output of the resistor in it;

- a tensile cylindrical spring connecting the armature to the yoke and an elastic wire connecting the yoke to the spring of the moving contact part are replaced by a spring of the moving contact part made of beryllium bronze rigidly fixed to the yoke with rivets or spot welding.

Elements for mounting the terminals of the relay coil are crimped by the shanks of the pins located on the upper surface of the base.

The anchor is made convex for orientation of the contact spring when assembling the anchor with the contact spring.

The yoke made stops for orientation of the anchor with the yoke during assembly and welding of the spring with the yoke.

The above set of essential features in comparison with the prior art allows us to conclude that the proposed technical solution meets the criterion of "novelty."

Figure 1 - General view of the proposed electromagnetic relay in the context.

Figure 2 is a view along arrow B on the contact spring and the anchor convex.

Figure 3 is a view along arrow B at the place of welding of the contact spring with the yoke.

Figure 4 is a section along G-G.

The positions in the drawing indicate: base - 1; yoke - 2; core - 3; frame - 4; anchor - 5; contact spring - 6; movable contact - detail - 7; bends of the contact-output plate - 8, 9; pin forming pin - 10; reference area - 11; contact rack - 12; fixed contact - part of the normally open contact - 13; fixed contact - part of the normally closed contact - 14; pin forming pin - 15; elements for mounting the terminals of the coil of the relay coil - 16; relay housing - 17; coil winding - 18; portions of the pins 19 located on the upper surface of the base have shanks 23, which are crimped elements 16; the place of fixed connection of the contact spring with the yoke of spot welding - 20; groove - 21; Pukli - 22; output - 24 resistors; emphasis - 25 on the yoke.

The relay contains a flat insulating base 1, on the surface of which there is an electromagnetic system with a L-shaped yoke 2.

A core 3 is mounted on yoke 2, on which a frame 4 with a coil of relay coil 18 is mounted. An anchor 5 is attached with a contact flat spring 6 made of beryllium bronze with a movable contact - part 7. On the base 1, a contact-output plate with two bends 8 is fixed , 9, pin 10, bearing pad 11, contact stand 12 with a fixed contact - detail 13, which are elements of a node of normally open contact. Similar elements are contained in the contact-output plate of the normally-closed contact node with the fixed contact - part 14 with pin 15. In the frame 4 there are installed elements 16 for fastening the two ends of the relay winding on opposite sides of the side surface of the frame. The relay has a housing 17.

In addition, it is provided that the yoke is electrically connected to the contact spring of the moving contact part by means of contact spot welding 20, which eliminates the operation of adjusting the contact spring and improves the accuracy of the relative positions of the relay nodes - yoke - armature - contact spring - contacts.

There are two stops 25 on the yoke, between which the anchor 5 is installed during assembly. After that, the anchor with the spring 6 welded to it becomes oriented with respect to the yoke. Then produce welding of the spring 6 with a yoke. This achieves the technical result, which consists in simplifying the design and improving manufacturability.

The relay is made in the dimensions and weight of the prototype with a housing without an arm and with pins 23.7 mm * 27.2 mm * 38 mm plus, minus 20 percent, weight 0.03 kg plus, minus 20 percent.

The gap A between the armature and the core at the moment of closing the normally open contact with the coil of the relay coil on is 0.15 mm plus, minus 50 percent.

Before operating the relay, the pins are installed in the socket block of the vehicle. When the relay coil coil circuit is closed by the switch, the core 3 attracts the armature 5, opening the circuit of the moving contact part with the normally closed contact part 14. The moving contact part 7 closes the normally open contact with the fixed contact part 13, the voltage is supplied to the consumer. During operation, the movable contact part 7 is located in a region bounded by a contact stand with a fixed contact part and a conditional imaginary plane, in which lies the flat part of the terminal that forms the pin of the same contact plate.

The proposed utility model has the following advantages:

- Simplified product design;

- Simplified manufacturing technology;

- Simplified adjustment of electrical parameters;

- Improved reliability and stability;

- Simultaneous tests of 30 samples of relay 75.3777.000 for all types of loads were carried out. The tests gave positive results;

- The scope of the relay has been expanded in new promising vehicle modifications, in which the number of energy consumers has been increased;

- On the product 75.3777.000 using the proposed utility model, design and technological documentation was developed, production was prepared.

Claims (4)

1. An electromagnetic relay comprising a housing, a flat base, on the surface of which an electromagnetic system is located, comprising a yoke with a core fixed to it, on which a frame with a coil of a relay coil is mounted, an armature with a contact spring, with a movable contact part, also containing contact-output plates, characterized in that the parts of the contact-output plates located on the surface of a flat base, electrically connected to the terminals of the coil of the relay coil, have a groove for fixing it odov resistor spring movable contact piece is fixedly secured, e.g., welded to the yoke, wherein the anchor jacke made for orientation of the spring movable contact piece anchor. 2. The electromagnetic relay according to claim 1, characterized in that the spring of the movable contact part is made of beryllium bronze. 3. The electromagnetic relay according to claim 1, characterized in that the elements for mounting the terminals of the relay coil are crimped by the shanks of the pins located on the upper surface of the base. 4. The electromagnetic relay according to claim 1, characterized in that the yoke has stops between which an anchor is mounted for orientation.