CN216133828U - Low temperature rise electromagnetic relay - Google Patents

Abstract

The utility model discloses a low temperature rise electromagnetic relay, comprising: an electromagnetic relay body; the electromagnetic relay body includes: the device comprises a machine body main body, a movable reed assembly, a stationary contact, a fixed terminal pin, a yoke and a quick-plug terminal pin; each static contact is fixedly arranged on the machine body through a fixed end pin, the yoke is fixed on the machine body, one end of the movable reed component is connected with the yoke, the other end of the movable reed component is provided with a movable contact, and the movable contact is switched between the states of closing the static contact and opening the static contact; the yoke and the quick-insertion end pin are of a split structure, and the quick-insertion end pin is fixedly connected to the yoke. The yoke and the quick-insertion terminal pin are made into a split structure, and the quick-insertion terminal pin is assembled on the yoke, so that the quick-insertion terminal pin does not need to use an iron material, and can be made of other materials with better electric conductivity (such as copper materials), the heat dissipation performance of the electromagnetic relay is effectively enhanced, the heat dissipation efficiency is improved, and the temperature rise in the relay is reduced.

Description

Low temperature rise electromagnetic relay

Technical Field

The utility model relates to the field of relays, in particular to a low-temperature-rise electromagnetic relay.

Background

A Relay (Relay), also called Relay, is an electronic control device having a control system (also called input loop) and a controlled system (also called output loop), usually applied in an automatic control circuit, which is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

Electromagnetic relay can produce a large amount of heat energy after long-time work, especially small-size big electromagnetic relay, owing to can receive the impact of heavy current, can produce high temperature because arc discharge in the twinkling of an eye between the contact, if the heat that produces can not in time effectual conduction go out the relay machine external, then influence electromagnetic relay's life gently, can lead to electromagnetic relay inside because the high temperature burns out when serious. The structure of the existing small-sized large electromagnetic relay is shown in fig. 1, and a machine body of the existing small-sized large electromagnetic relay comprises a movable contact spring assembly 1, a fixed contact 2, a yoke 3 and a fixed terminal pin 4, wherein the movable contact spring assembly 1 comprises a movable contact 5. When the electromagnetic relay works with a load, the movable contact spring assembly 1 moves, a large amount of heat energy can be generated by arc discharge at the moment that the movable contact 1 and the fixed contact 2 are opened and closed, and the heat energy can be conducted out through the yoke 3 and the fixed terminal pin 4. However, the yoke 3 is an integral structure, and because the yoke 3 itself is limited by the material, the iron material is needed, and the conductivity and heat dissipation performance of the iron material are not ideal enough, resulting in low heat dissipation efficiency, large temperature rise inside the relay, easy burnout, ignition and short service life.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a low-temperature-rise electromagnetic relay which can solve the problem that the existing electromagnetic relay is poor in heat dissipation performance and large in temperature rise.

The utility model is realized by the following technical scheme:

a low temperature rise electromagnetic relay comprising: an electromagnetic relay body; the electromagnetic relay body includes: the device comprises a machine body main body, a movable reed assembly, a stationary contact, a fixed terminal pin, a yoke and a quick-plug terminal pin; each static contact is fixedly arranged on the machine body through one fixed end pin, the yoke iron is fixed on the machine body, one end of the movable spring leaf assembly is connected with the yoke iron, the other end of the movable spring leaf assembly is provided with a movable contact, and the movable contact is switched between a state of closing the static contact and a state of opening the static contact; the yoke iron and the quick-plugging terminal pin are of a split structure, and the quick-plugging terminal pin is fixedly connected to the yoke iron.

Furthermore, the quick-plug terminal pin is made of copper.

Furthermore, a plurality of fixed convex hull structures are arranged on the surface of the yoke, corresponding through holes are formed in the quick-inserting end pins, and the quick-inserting end pins are riveted and fixed on the yoke.

Furthermore, the low temperature rise electromagnetic relay comprises two fixed contacts and two fixed terminal pins, wherein one fixed contact is arranged right above the movable contact, and the other fixed contact is arranged right below the movable contact.

Further, the movable spring piece assembly comprises a spring piece, a mounting plate and a movable contact; one end of the spring piece is connected with the yoke iron, and the other end of the spring piece is fixedly provided with the movable contact; the mounting plate is fixedly connected to the bottom of the spring piece and can be rotatably connected to the yoke.

Further, the low temperature rise electromagnetic relay further comprises a shield shell, an accommodating space is formed inside the shield shell, and the electromagnetic relay body is fixedly arranged in the shield shell.

Further, the low temperature rise electromagnetic relay further comprises a bottom plate, the bottom plate is adapted to the shield shell, and the bottom plate is clamped and fixed at the bottom of the shield shell.

Compared with the prior art, the utility model can achieve the following beneficial effects: a large amount of heat energy can be generated due to arc discharge at the moment when the movable contact and the fixed contact are closed and opened, the heat energy can be transmitted out through the fixed terminal pin and the yoke iron, and the heat energy on the yoke iron can be further transmitted out through the quick-plug terminal pin. The yoke and the quick-insertion terminal pins are made into a split structure, and the quick-insertion terminal pins are assembled on the yoke, so that the quick-insertion terminal pins do not need to be made of iron materials, but can be made of other materials with better conductivity (such as copper materials), the heat dissipation performance of the electromagnetic relay is effectively enhanced, the heat dissipation efficiency is improved, the temperature rise inside the relay is reduced, the risk of burning out and firing caused by large temperature rise is avoided, and the service life of the relay is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a conventional electromagnetic relay body;

FIG. 2 is a schematic overall view of the present invention;

FIG. 3 is an exploded view of the present invention;

fig. 4 is a schematic structural view of an electromagnetic relay body according to the present invention;

FIG. 5 is an exploded view of the yoke and the quick connect terminal pin;

FIG. 6 is a schematic structural view of an electromagnetic relay body at another angle;

fig. 7 is a side view of the electromagnetic relay body;

fig. 8 is a schematic view showing the assembly of the movable spring assembly and the yoke.

In the figure: 10. an electromagnetic relay body; 11. a main body of the machine body; 12. a movable spring plate component; 121. a spring plate; 122. mounting a plate; 123. a movable contact; 13. a stationary contact; 14. fixing the end pin; 15. a yoke; 151. fixing the convex hull; 16. a fast-plug terminal pin; 20. a shroud housing; 30. a base plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

The utility model discloses a low temperature rise electromagnetic relay, in particular to a low temperature rise small-sized high-power relay. Referring to fig. 4 to 7, the relay includes: an electromagnetic relay body 10 for realizing the main electrical functions of the relay; the electromagnetic relay body 10 further includes: the main body 11, the movable contact spring assembly 12, the fixed contact 13, the fixed terminal pin 14, the yoke 15 and the quick plug terminal pin 16. Wherein, each static contact 13 is fixedly arranged on the machine body 11 through a fixed terminal pin 14; the yoke 15 is fixedly connected to the machine body 11, specifically, the yoke 15 is a sheet structure and is fixed on the side of the machine body 11; one end of the movable contact spring assembly 12 is connected with the yoke 15, the other end is provided with a movable contact 123, the movable contact 123 and the fixed contact 13 are switched between a closed state and an open state, a large amount of heat is generated due to arc discharge at the closing and opening moment, and the heat is transferred to the yoke 15 and the fast plug terminal pin 16 through the movable contact 123 and the fixed terminal pin 14 through the fixed contact 13. Referring to fig. 5, the yoke 15 and the fast plugging terminal pin 16 are of a split structure, and are two independent components, and the fast plugging terminal pin 16 is fixedly connected to the yoke 15.

When the relay works with load, the movable contact spring assembly 12 moves to drive the movable contact 123 to move, so that the fixed contact 13 is closed or opened. The moment the movable contact 123 and the stationary contact 13 are closed and opened generates a large amount of heat energy due to the arc discharge, the heat energy is transferred through the fixed terminal pin 14 and the yoke 15, and the heat energy on the yoke 15 is further transferred through the fast plug terminal pin 16. According to the utility model, the yoke 15 and the quick-plug terminal pin 16 are made into a split structure, and the quick-plug terminal pin 16 is assembled on the yoke 15, so that the quick-plug terminal pin 16 does not need to use an iron material, but can use other materials with better conductivity (such as copper materials), thereby effectively enhancing the heat dissipation performance of the electromagnetic relay, improving the heat dissipation efficiency, reducing the temperature rise in the relay, avoiding the risk of burning out and firing caused by large temperature rise, and prolonging the service life of the relay.

It should be noted that the improvement of the present invention lies in the structure of the yoke 15 and the quick-insertion terminal pin 16; the specific components of the main body 11, the connection relationship between the main body 11 components, and the electrical operation principle of the electromagnetic relay are all common knowledge of those skilled in the art, and are not described herein again.

Preferably, the quick-connect terminal pin 16 is made of copper. In the aspect of conductivity and heat energy conduction, the comprehensive performance of the copper material is better than that of the iron material, and the phenomenon that the electromagnetic relay is short in service life or burnt out to cause fire due to overhigh temperature rise in working can be effectively avoided. Of course, the utility model is not limited to copper material, and other known materials with excellent conductivity and heat dissipation performance can be selected.

Preferably, referring to fig. 8, the specific connection between the yoke 15 and the quick-insertion terminal pin 16 is as follows: the surface of the yoke 15 is provided with a plurality of fixed convex hulls 151, more preferably 3 fixed convex hulls 151, and the fast-plugging terminal pin 16 is provided with through holes corresponding in number and shape; the quick-insertion terminal pins 16 are riveted to the surface of the yoke 15 by the fitting of the fixing bosses 151 and the through holes. The riveting mode has higher stability and bonding strength, so that the connection between the yoke 15 and the quick-insertion end pin 16 is firmer and more reliable.

Preferably, with reference to fig. 6-7, the utility model comprises in particular two stationary contacts 13 and two fixed terminal pins 14. One of the stationary contacts 13 is disposed directly above the movable contact 123, and the other stationary contact 13 is disposed directly below the movable contact 123. The top of the fixed contact 13 above the moving contact 123 is connected with a fixed terminal pin 14, and the bottom of the fixed contact 13 below the moving contact 123 is connected with a fixed terminal pin 14.

Preferably, with reference to fig. 8, the movable spring assembly 12 comprises in particular: spring leaf 121, mounting plate 122, and movable contact 123. One end of the spring leaf 121 is connected with the yoke 15, and the other end is fixedly provided with a movable contact 123; the mounting plate 122 is fixedly attached to the bottom of the spring plate 121 and is rotatably attached to the yoke 15. When the movable spring piece assembly 12 moves downwards, the spring piece 121 bends and has elastic potential energy, the mounting plate 122 rotates relative to the yoke 15, and the movable contact 123 contacts the lower fixed contact 13; when the movable contact 123 is disconnected from the lower stationary contact 13, the spring leaf 121 rebounds to drive the movable spring piece assembly 12 to reset.

Preferably, referring to fig. 2 to 3, the present invention further includes a shield case 20, the shield case 20 has an accommodating space therein, and the electromagnetic relay body 10 is fixedly disposed in the shield case 20.

Further preferably, the present invention further includes a bottom plate 30, the bottom plate 30 is adapted to the shield case 20, and the bottom plate 30 is fastened to the bottom of the shield case 20, for hermetically fixing the electromagnetic relay main body inside the shield case 20, so as to perform a protection function.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (7)

1. A low temperature rise electromagnetic relay, comprising: an electromagnetic relay body; the electromagnetic relay body includes: the device comprises a machine body main body, a movable reed assembly, a stationary contact, a fixed terminal pin, a yoke and a quick-plug terminal pin; each static contact is fixedly arranged on the machine body through one fixed end pin, the yoke iron is fixed on the machine body, one end of the movable spring leaf assembly is connected with the yoke iron, the other end of the movable spring leaf assembly is provided with a movable contact, and the movable contact is switched between a state of closing the static contact and a state of opening the static contact; the yoke iron and the quick-plugging terminal pin are of a split structure, and the quick-plugging terminal pin is fixedly connected to the yoke iron.

2. A low temperature rise electromagnetic relay as claimed in claim 1 wherein said quick-connect terminal pin is copper.

3. A low temperature rise electromagnetic relay as claimed in claim 1, wherein said yoke has a plurality of fixed convex hull structures on its surface, said fast-plug terminal pin has a corresponding through hole, said fast-plug terminal pin is riveted to said yoke.

4. The low temperature-rise electromagnetic relay according to claim 1, wherein said low temperature-rise electromagnetic relay includes two stationary contacts and two fixed terminal pins, one of said stationary contacts being disposed directly above said movable contact, and the other of said stationary contacts being disposed directly below said movable contact.

5. A cryogenic rise electromagnetic relay according to claim 1 wherein the movable spring assembly comprises a spring plate, a mounting plate and a movable contact; one end of the spring piece is connected with the yoke iron, and the other end of the spring piece is fixedly provided with the movable contact; the mounting plate is fixedly connected to the bottom of the spring piece and can be rotatably connected to the yoke.

6. The low temperature rise electromagnetic relay of claim 1 further comprising a shield case having an accommodation space therein, wherein the electromagnetic relay body is fixedly disposed in the shield case.

7. The low temperature-rise electromagnetic relay of claim 6, further comprising a bottom plate adapted to the shield housing, the bottom plate snap-fit secured to a bottom of the shield housing.

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