CN212934496U

CN212934496U - Electromagnetic relay structure

Info

Publication number: CN212934496U
Application number: CN202021183745.3U
Authority: CN
Inventors: 黄才笋; 付道明; 陈妙华; 严海成; 黄宇林; 朱文瑞
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-04-09
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to an electromagnetic relay structure, through setting up two movable contacts and two stationary contacts in electromagnetic relay, make the magnetic circuit module promote two sets of movable contacts to move simultaneously through a promotion module, make it switch on with the stationary contact, realize the double control function, make it replace two single-contact relays on the function, save the control panel space, do benefit to the miniaturization of control panel; when a set of contact adhesion, another group of contact still can normally realize the break-make function under the promotion of promotion module, and in addition, can also realize realizing the line double-cutting of zero fire, improved circuit system's security.

Description

Electromagnetic relay structure

Technical Field

The utility model relates to a relay structure, concretely relates to electromagnetic relay structure.

Background

An electromagnetic relay is an electronic control device, which has a control system and a controlled system, is usually applied to an automatic control circuit, and is actually an 'automatic switch' for controlling a larger current by using a smaller current, and plays roles in automatic regulation, safety protection, switching circuits and the like in the circuit. The electromagnetic relay controls the contact and the disconnection of a pair of movable and static contacts of a controlled system through components such as an iron core, a coil and an armature of the control system, so that the on-off of a circuit is realized.

The electromagnetic relay in the prior art generally only has a group of moving and static contacts and can only control the on-off of a single wire, when the relay is applied to other household electrical control systems, if the relay is applied to an air conditioner electric auxiliary heat control system, a single-contact electromagnetic relay is adopted for control, when the relay is normally closed due to the fact that a relay or a front section control chip breaks down, the PTC of an air conditioner is continuously heated to cause serious potential safety hazards, and if the safety of the air conditioner electric auxiliary heat control system is improved, the area and the cost of a control panel can be increased due to the fact that two single-contact electromagnetic relays are adopted for control.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electromagnetic relay structure, which can realize the dual-cutting of zero line and live line, and can solve the problem that one set of contacts in the dual-contact relay can not work normally due to the adhesion of the other set of contacts, in particular,

an electromagnetic relay comprises a magnetic circuit module, a pushing module and a plurality of contact modules, wherein each contact module comprises a fixed contact and a movable contact, and the fixed contacts are fixed in the electromagnetic relay; the movable contact is movably arranged on one side of the static contact and is arranged opposite to the static contact; the magnetic circuit module is arranged on one side of the movable contact far away from the fixed contact; the pushing module is arranged above the magnetic circuit module, one end of the pushing module is in driving connection with the magnetic circuit module, the other end of the pushing module extends towards the direction close to the moving contact, and a certain gap is formed between the pushing module and the moving contact;

when the magnetic circuit module is electrified, the magnetic circuit module generates magnetic force to drive the pushing module to move towards the moving contact to push the moving contact, so that the moving contact is in contact conduction with the static contact; when the magnetic circuit module is powered off, the magnetic force generated by the magnetic circuit module disappears, the pushing module moves towards the direction far away from the movable contact, the movable contact resets after losing the pushing force, and the movable contact and the fixed contact are separated and powered off.

Optionally, the pushing module at least comprises a pushing plate, and the pushing plate is flatly paved above the magnetic circuit module; the pushing plate extends outwards to form two contact pins at the corresponding positions of the two side edges of the movable contact; when the magnetic circuit module is electrified, the pushing plate moves towards the direction close to the movable contact, and the two contact pins push the movable contact to be in contact with the fixed contact.

Optionally, the magnetic circuit module comprises an iron core, a coil and an armature, the iron core is fixed on one side of the movable contact far away from the fixed contact, and the coil is sleeved on the iron core; the armature is arranged on one side of the coil far away from the moving contact, and the middle section of the armature is magnetically connected with the coil.

Optionally, the magnetic circuit module further comprises a yoke, the yoke is connected with the pole face on one side of the iron core, and when the magnetic circuit module is electrified, a closed-loop magnetic circuit is generated among the yoke, the iron core and the coil.

Optionally, the magnetic circuit module further comprises a pressure spring piece, and the pressure spring piece is arranged on one side, away from the iron core, of the armature and used for supporting the armature.

Optionally, the bottom end of the compression spring piece is lower than the lower end face of the yoke, a connecting plate is further arranged between the bottom end of the compression spring and the lower end face of the yoke, and the bottom end of the armature is located on the connecting plate and can move back and forth along the length direction of the connecting plate.

Optionally, the contact module further comprises a static reed and a movable reed, and the static contact is arranged on the static reed; the movable contact is arranged on the movable spring piece, the movable spring piece is arranged on one side of the static spring piece, one end of the movable spring piece, far away from the movable contact, is fixed, one end provided with the movable contact can move relative to the fixed end, and the width of the movable spring piece is larger than the width between the two contact pins of the pushing plate opposite to the movable contact.

Optionally, the electromagnetic relay further comprises a baffle plate disposed between adjacent contact modules.

Optionally, the electromagnetic relay further comprises a fixing block, and the fixing block is arranged on one side, far away from the static reed, of the movable reed.

Optionally, electromagnetic relay still includes two sets of soldering lug, and the soldering lug passes electromagnetic relay's bottom and outwards extends, and contains two soldering lugs of being connected with static reed or movable contact spring respectively in every group soldering lug, and one of them soldering lug is connected with the zero line, and another soldering lug is connected with the live wire.

The utility model provides an electromagnetic relay structure, through set up two movable contacts in electromagnetic relay inside to and two stationary contacts that correspond with the movable contact, the magnetic circuit module drive push module moves forward during the circular telegram, make the unsettled one end of push module promote two sets of movable contacts and contact with the stationary contact and switch on, realize the double control function; when one group of contacts are adhered, the other group of contacts can still normally realize the on-off function under the pushing of the pushing module, and the safety of a circuit system is improved.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural view (front sectional view) of an electromagnetic relay in an embodiment of the present invention;

fig. 2 is a schematic structural view (top view) of an electromagnetic relay in an embodiment of the present invention;

fig. 3 is a schematic diagram of the wiring of the electromagnetic relay contact module in the embodiment of the present invention;

in the figure:

1-a base; 2-a pressure spring piece; 3-an iron core; 4-an armature; 5-a coil former; 6-a housing; 7-pushing the board; 8-movable reed; 9-moving contact; 10-stationary contact; 11-a stationary reed; 12-fixing blocks; 13-a coil; 14-a yoke; 15-a baffle; 16-soldering lug.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art so that they can be easily implemented by those skilled in the art. As can be readily understood by those skilled in the art to which the present invention pertains, embodiments to be described later may be modified into various forms without departing from the concept and scope of the present invention. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" include plural forms as well, unless the contrary is expressly stated. The term "comprising" as used in the specification embodies particular features, regions, constants, steps, actions, elements and/or components and does not exclude the presence or addition of other particular features, regions, constants, steps, actions, elements, components and/or groups.

All terms used below, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in dictionaries are to be interpreted as meanings complied with in the relevant technical documents and the present disclosure, and cannot be interpreted as having a very formal meaning without definition.

Example (b):

as shown in fig. 1-3, this embodiment provides an electromagnetic relay structure, which includes a base 1, a housing 6, a magnetic circuit module, a pushing module, and a plurality of contact modules, where the housing 6 is disposed above the base 1, a cavity is formed between the housing 6 and the base 1, the magnetic circuit module, the pushing module, and the plurality of contact modules are disposed in the cavity, and there are two contact modules in this embodiment; each contact block comprises a fixed contact 10 and a movable contact 9, and the fixed contact 10 is fixed in the electromagnetic relay; the movable contact 9 is movably arranged on one side of the fixed contact 10 and is opposite to the fixed contact 10; the magnetic circuit module is arranged on one side of the movable contact 9 far away from the fixed contact 10; the pushing module is arranged above the magnetic circuit module, one end of the pushing module is in driving connection with the magnetic circuit module, extends towards the direction close to the movable contact 9, and has a certain gap with the movable contact 9; when the electromagnetic relay is electrified, the magnetic circuit module generates magnetic force, and can drive the pushing module to move towards the moving contact 9 to push the moving contact 9, so that the two groups of moving contacts 9 are in contact conduction with the two groups of fixed contacts 10, and the double-control function is realized; when the electromagnetic relay is powered off, the magnetic force disappears, the magnetic circuit module drives the pushing module to move towards the direction far away from the movable contact 9, the movable contact 9 resets after losing the pushing force and is separated from the fixed contact 10 to be powered off, and the circuit controlled by the movable contact 9 and the fixed contact 10 is disconnected; even if one group of the fixed contact 10 and the movable contact 9 in the two groups of contact modules are adhered together due to faults, when the electromagnetic relay is powered off, the group of the contact modules which do not have faults can still be normally separated; when the electromagnetic relay is powered off, a group of contact modules which do not have faults can be normally contacted, and a circuit controlled by the electromagnetic relay is still not influenced. That is, as shown in fig. 3, the two sets of contact modules are connected in series, when the fixed contact 10 and the movable contact 9 of one of the contact modules are stuck together due to a fault, the corresponding circuit switch of the contact module is in a short-circuit state, and the other one can still normally perform the on-off function of the circuit.

The pushing module at least comprises a pushing plate 7, and the pushing plate 7 is flatly laid above the magnetic circuit module; the pushing plate 7 extends outwards to form two contact pins at the corresponding positions of the two side edges of the movable contact 9; when the magnetic circuit module is electrified, the pushing plate 7 moves towards the direction close to the movable contact 9, and the two contact pins push the movable contact 9 to be contacted with the fixed contact 10; when the magnetic circuit module is powered off, when the push plate 7 moves away from the movable contact 9, the two contact pins are separated from the movable contact 9, and the movable contact 9 is separated from the fixed contact 10.

The contact module further comprises a static reed 11 and a movable reed 8, a static contact 10 is arranged on the static reed 11, the static reed 11 is fixed in the electromagnetic relay, and therefore the position of the static contact 10 arranged on the static reed 11 is also fixed; the movable contact 9 is arranged on the movable spring 8, the movable spring 8 is arranged on one side of the fixed spring 11, one end far away from the movable contact 9 is fixed, and the movable spring 8 has certain elasticity, so that the movable spring 8 bends under the abutting pressure of the push plate 7, the end provided with the movable contact 9 moves relative to the fixed end, the width of the movable spring 8 is larger than the width between two contact pins of the push plate 7 opposite to the movable spring 8, the situation that the movable spring 8 cannot be pushed due to too large width between the two contact pins of the push plate 7 is avoided, and when the movable contact 9 is contacted with the fixed contact 10, a circuit controlled by the movable contact 9 and the fixed contact 10 is conducted; when the push plate 7 does not apply pressure to the movable spring 8 and separates from it, the movable spring 8 is restored to its original state, and the movable contact 9 returns to the original position to be separated from the stationary contact 10, so that the circuit controlled by the movable contact 9 and the stationary contact 10 is opened.

The magnetic circuit module comprises an iron core 3, a coil 13 and an armature 4, wherein the iron core 3 is fixed on one side of the movable contact 9 far away from the fixed contact 10; the coil 13 is sleeved on the iron core 3; the armature 4 is arranged on one side of the coil 3 far away from the movable contact 9, the middle section of the armature 4 is magnetically connected with the coil 3, and the top end of the armature 4 is connected with the pushing plate 7. Specifically, the armature 4 is arranged at one end of the iron core 3, which is far away from the movable reed 8, when the electromagnetic relay is electrified, according to the electromagnetic principle, the iron core 3 and the coil 13 generate a magnetic field to generate magnetic force, the armature 4 can be attracted to move towards the direction of the iron core 3, and the pushing plate 7 connected with the armature 4 moves towards the same direction under the driving of the armature 4, so that the pushing effect on the movable reed 8 is realized; when the electromagnetic relay is powered off, the magnetic force disappears, and the armature iron 4 drives the push plate 7 to return to the initial position. The magnetic circuit module further comprises a coil rack 5 and a yoke 14, the yoke 14 is suspended inside the electromagnetic relay, specifically, the iron core 3 is arranged on the coil rack 5, the yoke 14 is arranged below the coil rack 5, one end of the yoke 14 is connected with a pole face at one end of the iron core 3, when the electromagnetic relay is electrified, a closed-loop magnetic circuit is generated among the yoke 14, the iron core 3 and the coil 13, magnetic lines of force generated by the coil 13 are sealed inside, and magnetic energy is fully utilized.

Preferably, the magnetic circuit module further comprises a pressure spring piece 2, the pressure spring piece 2 consists of a fixed part and a movable part, a bending structure is formed between the fixed part and the movable part, and the movable part can rotate relative to the fixed part; the fixed part is suspended in the electromagnetic relay, and the movable part is pressed on one side of the armature iron 4 far away from the iron core 3. The pressure spring piece 2 is vertically suspended on one side, far away from the coil 13, of the armature 4, has certain elasticity, can support the armature 4, and can incline backwards under the action of gravity when the armature 4 is not attracted by magnetic force, and at the moment, the pressure spring piece 2 supports the armature 4 to avoid the situation that the armature is not easily attracted by the iron core 3 due to too large toppling amplitude.

In this embodiment, the bottom end of the pressure spring piece 2 is lower than the lower end surface of the yoke 14, a connecting plate is further disposed between the bottom end of the pressure spring piece 2 and the lower end surface of the yoke 14, and the bottom end of the armature 4 is located on the connecting plate and can move back and forth along the length direction of the connecting plate. Specifically, 4 one end of armature is connected with catch plate 7, the platelike structure that the other end formed to extend to both sides, platelike structure one end is supported and is leaned on 14 bottoms of yoke, the other end is supported and is leaned on 2 bottoms of pressure spring piece, specifically, pressure spring piece 2 below still is equipped with a connecting plate, platelike structure's the other end is restricted and is moved between pressure spring piece 2 and connecting plate, can prevent armature 4 and drop, wherein, the bottom minimum of pressure spring piece 2 is less than the bottom minimum of yoke 14, make platelike structure both ends highly differ and armature 4 is in the tilt state not receiving magnetic attraction. When the armature 4 is subjected to magnetic attraction, one end of the armature 4 connected with the pushing plate 7 rotates around one end forming a plate-shaped structure, and the function of driving the pushing plate 7 is achieved.

Preferably, the electromagnetic relay further comprises a baffle 15, and the baffle 15 is arranged between the adjacent contact modules, in this embodiment, the baffle 15 is arranged between the two contact modules, and plays a role in isolating the contact modules, so that when an electric arc is generated at a contact of one contact module, the adjacent contact module is prevented from being affected, and the safety performance of the electromagnetic relay is improved; the electromagnetic relay further comprises a fixed block 12, wherein the fixed block 12 is arranged on one side, far away from the static reed 11, of the movable reed 8, namely the fixed block 12 is arranged between the movable reed 8 and the push plate 7, and the movable reed 8 is prevented from rebounding due to the inertia effect.

The electromagnetic relay further comprises two groups of soldering lugs 16, wherein the soldering lugs 16 penetrate through the bottom of the electromagnetic relay and extend outwards, specifically penetrate through the base 1 and extend outwards, and are convenient to be connected with other circuits; each group of soldering lugs comprises two soldering lugs 16 respectively connected with a static reed 11 or a movable reed 8 in the contact module, one soldering lug 16 is connected with a zero line, the other soldering lug 16 is connected with a live wire, and the zero line and the live wire connected with each contact module form a loop capable of simultaneously cutting off the live wire and the zero line, so that the electromagnetic relay in the embodiment can realize the double-cutting function of the zero line and the live wire.

The embodiment provides an electromagnetic relay structure, two movable contacts and two fixed contacts are arranged in an electromagnetic relay, so that a magnetic circuit module simultaneously pushes two groups of movable contacts to move through a pushing module, the movable contacts are in contact conduction with the fixed contacts, a double-control function is realized, the electromagnetic relay structure can replace two single-contact relays in function, the space of a control panel is saved, and the miniaturization of the control panel is facilitated; when a set of contact adhesion, another group of contact still can normally realize the break-make function under the promotion of promotion module, and in addition, can also realize realizing the line double-cutting of zero fire, improved circuit system's security.

Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An electromagnetic relay, characterized in that it comprises a magnetic circuit module, a push module and a plurality of contact modules, wherein each of said contact modules comprises a stationary contact (10) and a movable contact (9), said stationary contact (10) being fixed inside said electromagnetic relay; the movable contact (9) is movably arranged on one side of the fixed contact (10) and is opposite to the fixed contact (10); the magnetic circuit module is arranged on one side of the movable contact (9) far away from the fixed contact (10); the pushing module is arranged above the magnetic circuit module, one end of the pushing module is in driving connection with the magnetic circuit module, the other end of the pushing module extends towards the direction close to the movable contact (9), and a certain gap is formed between the pushing module and the movable contact (9);

when the magnetic circuit module is electrified, the magnetic circuit module generates magnetic force to drive the pushing module to move towards the moving contact (9) to push the moving contact (9), so that the moving contact (9) is in contact conduction with the fixed contact (10); when the magnetic circuit module is powered off, the magnetic force generated by the magnetic circuit module disappears, the pushing module moves towards the direction far away from the movable contact (9), the movable contact (9) resets after losing the pushing force, and the movable contact (9) and the fixed contact (10) are separated and powered off.

2. An electromagnetic relay according to claim 1, characterized in that said push module comprises at least a push plate (7), said push plate (7) being arranged above said magnetic circuit module; the positions of the push plate (7) corresponding to the two side edges of the movable contact (9) extend outwards to form two contact pins; when the magnetic circuit module is electrified, the pushing plate (7) moves towards the direction close to the movable contact (9), and the two contact pins push the movable contact (9) to be in contact with the fixed contact (10).

3. An electromagnetic relay according to claim 2, characterized in that the magnetic circuit module comprises a core (3), a coil (13) and an armature (4), the core (3) is fixed on the side of the moving contact (9) far away from the stationary contact (10), and the coil (13) is sleeved on the core (3); the armature (4) is arranged on one side of the coil (13) far away from the movable contact (9), the middle section of the armature (4) is magnetically connected with the coil (13), and the top end of the armature (4) is connected with the pushing plate (7).

4. An electromagnetic relay according to claim 3, characterized in that the magnetic circuit module further comprises a yoke (14), the yoke (14) being connected to the pole face on the side of the core (3), and when the magnetic circuit module is energized, a closed magnetic circuit is created between the yoke (14), the core (3) and the coil (13).

5. The electromagnetic relay according to claim 4, characterized in that the magnetic circuit module further comprises a pressure spring (2), the pressure spring (2) being provided on a side of the armature (4) remote from the core (3) for supporting the armature (4).

6. The electromagnetic relay according to claim 5, characterized in that the bottom end of the pressure spring piece (2) is lower than the lower end face of the yoke (14), a connecting plate is further arranged between the bottom end of the pressure spring piece (2) and the lower end face of the yoke (14), and the bottom end of the armature (4) is located on the connecting plate and can move back and forth along the length direction of the connecting plate.

7. The electromagnetic relay according to any of claims 2-6, characterized in that the contact module further comprises a stationary spring (11) and a movable spring (8), the stationary contact (10) being arranged on the stationary spring (11); the movable contact (9) is arranged on the movable spring piece (8), the movable spring piece (8) is arranged on one side of the fixed spring piece (11), one end of the movable spring piece, far away from the movable contact (9), is fixed, one end provided with the movable contact (9) can move relative to the fixed end, and the width of the movable spring piece (8) is larger than the width between two contact pins of the pushing plate (7) opposite to the movable spring piece.

8. The electromagnetic relay according to any of claims 1-6, characterized in that the electromagnetic relay further comprises a baffle (15), the baffle (15) being provided between adjacent contact modules.

9. The electromagnetic relay according to claim 7, characterized in that the electromagnetic relay further comprises a fixed block (12), wherein the fixed block (12) is arranged on the side of the movable spring (8) far away from the static spring (11).

10. The electromagnetic relay according to claim 9, characterized in that the electromagnetic relay further comprises two sets of soldering lugs (16), the soldering lugs (16) extending outwards through the bottom of the electromagnetic relay, and each set of soldering lugs (16) comprises two soldering lugs (16) connected to the static spring (11) or the movable spring (8), respectively, wherein one soldering lug (16) is connected to a neutral wire and the other soldering lug (16) is connected to a live wire.