CN221466506U - Relay device - Google Patents

Abstract

The utility model discloses a relay, which comprises two groups of contact assemblies, wherein each group of contact assemblies comprises an outgoing sheet for being connected with an external electric loop, a fixed contact arranged on the outgoing sheet, a supporting piece arranged at the side of the outgoing sheet and a moving contact arranged on the supporting piece and opposite to the fixed contact, the moving contacts in the two groups of contact assemblies are arranged in a one-to-one correspondence manner so as to form a moving contact pair comprising two moving contacts which are arranged correspondingly, and the two moving contacts in the moving contact pair are connected in series through a conductive piece; the auxiliary pins are arranged and selectively electrically connected with the conductive pieces or the movable contact pairs, so that the working states of the two groups of contact assemblies are synchronously monitored. The relay realizes synchronous monitoring of the working states of the two groups of contact assemblies through the auxiliary pin, so that the convenience, the accuracy and the safety of the state identification work of the power distribution system are improved; and the auxiliary monitoring module is prevented from occupying more space, the relay structure is simplified, and the volume of the relay is reduced.

Description

Relay device

Technical Field

The utility model relates to the technical field of relays, in particular to a relay with an auxiliary monitoring function.

Background

The relay is a circuit control element, which consists of a control loop and a load loop, and is generally used for controlling the connection and disconnection of a circuit. The relay can realize the control of higher current and voltage by smaller current and voltage, and plays roles of safety protection, circuit conversion, automatic control and the like in the system. At present, the relay is widely applied to the fields of aerospace, household appliances, power grids and the like, and is one of important components of various power distribution systems.

The Chinese patent ZL202223099318.9 provides a multi-fracture relay, wherein two groups of contact assemblies and two groups of driving devices which can respectively drive the two groups of contact assemblies to work are arranged in the relay; the purpose of this design is to achieve: when a problem occurs in a product or unexpected fault current occurs in a loop, and adhesion can possibly occur to contacts of the relay, as two groups of contact assemblies are controlled independently of each other, even if adhesion occurs between a moving contact and a fixed contact in one group of contact assemblies, the other group of contact assemblies can also realize instant disconnection of a main loop, thereby ensuring safety of an electrical loop and greatly reducing unreliable risks caused by adhesion.

However, in the above relay structure, a functional structure and/or a module capable of monitoring the working state of the main contact in real time are not provided, so that the identification work of the state of the power distribution system is not ideal, and the safety of the power distribution system is affected.

Disclosure of Invention

In order to overcome the defects, the utility model provides the relay which can realize synchronous monitoring of the working states of the two groups of contact assemblies through one auxiliary pin, thereby improving the convenience and the accuracy of the state identification work of the power distribution system and the safety of the power distribution system; and the auxiliary monitoring module is prevented from occupying more space, the relay structure is simplified, the volume of the relay is reduced, and the manufacturing cost of the relay is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the relay comprises two groups of contact assemblies, wherein each group of contact assemblies comprises a leading-out sheet, a fixed contact, a supporting piece and a moving contact, the leading-out sheet is used for being connected with an external electric loop, the fixed contact is arranged on the leading-out sheet, the supporting piece is arranged beside the leading-out sheet, the moving contacts are arranged on the supporting piece and are opposite to the fixed contact at the same time, the moving contacts in the two groups of contact assemblies are arranged in a one-to-one correspondence manner so as to form a moving contact pair comprising two moving contacts which are correspondingly arranged, and the two moving contacts in the moving contact pair are connected in series through a conductive piece; the auxiliary pins are arranged and are selectively and electrically connected with the conductive pieces or the movable contact pairs, so that the working states of the two groups of contact assemblies are synchronously monitored.

As a further improvement of the present utility model, the auxiliary pin is electrically connected to the conductive member.

As a further improvement of the utility model, the conductive member is provided with a main body part fixed and electrically connected with the two moving contacts and a connecting part A integrally connected with the main body part, and the connecting part A is fixed and electrically connected with the auxiliary pin.

As a further improvement of the utility model, the auxiliary pin is of an integrated structure with a plurality of bending sections, one bending section is used for being connected with an external electric circuit, and the other bending section is fixedly connected with the conductive piece.

As a further improvement of the utility model, the auxiliary pin is electrically connected with two moving contacts in the moving contact pair.

As a further improvement of the utility model, the auxiliary pin is provided with a pin main body for accessing an external electric circuit and two connecting parts B which are respectively fixed with the pin main body and electrically connected, and the two connecting parts B are respectively and correspondingly fixedly connected or contacted with the two moving contacts.

As a further improvement of the utility model, the connecting part B is fixedly connected with one end of the moving contact, which is opposite to the fixed contact;

or the supporting piece is provided with a mounting hole for mounting the moving contact, the connecting part B is fixedly connected to the supporting piece, and the connecting part B is provided with a through hole which is coaxial with and penetrates through the mounting hole; when the movable contact is fixedly arranged in the mounting hole, the movable contact is tightly matched with the through hole so as to realize contact conduction with the connecting part B.

As a further improvement of the utility model, the auxiliary pin is also provided with two connecting parts, the two connecting parts are of bending structures, and the two connecting parts are respectively and correspondingly integrally connected between the two connecting parts B and the pin main body.

As a further improvement of the utility model, in each group of contact assemblies, the number of the fixed contacts and the number of the movable contacts are multiple and are arranged in a one-to-one correspondence manner;

correspondingly, the number of the moving contact pairs is also a plurality, and the auxiliary pins are selectively and electrically connected with one of the moving contact pairs.

As a further improvement of the present utility model, the conductive member is any one of a flexible wire, a flexible copper braid, or a flexible copper strip formed by stacking a plurality of copper foils;

The relay is also provided with two groups of driving devices, and the two groups of driving devices are respectively connected with the two supporting pieces correspondingly and can drive the moving contact to be connected with or disconnected from the fixed contact in a suction way.

The beneficial effects of the utility model are as follows: compared with the prior art, ① of the utility model can realize synchronous monitoring of the working states of the two groups of contact assemblies by only providing one auxiliary pin; the convenience and the accuracy of the state identification work of the power distribution system are improved, so that the safety of the power distribution system is improved; and the auxiliary monitoring module is prevented from occupying more space, so that the relay structure is simplified, the volume of the relay is reduced, and the manufacturing cost of the relay is reduced. ② The auxiliary pin and the conductive piece are combined, and the auxiliary pin is simple and reasonable in structure, easy to assemble, good in applicability, high in practicability and high in popularization and application value.

Drawings

Fig. 1 is a schematic view of a relay according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view of a portion of the relay of FIG. 1 (at a first view angle) with the outer housing and base removed;

FIG. 3 is a schematic view of a partial structure of the relay of FIG. 2 in a second view;

FIG. 4 is a schematic view of a portion of the relay of FIG. 2 in a third view;

FIG. 5 is a schematic perspective view of the contact assembly, conductive member and auxiliary pin of the relay structure of FIG. 4 assembled together;

FIG. 6 is a schematic side view of the relay structure of FIG. 4 with the contact assembly, conductive member and auxiliary pins assembled together;

FIG. 7 is an enlarged schematic view of the conductive member and auxiliary pins shown in FIG. 5 assembled together;

fig. 8 is a schematic structural diagram of the relay structure according to embodiment 2 of the present utility model when the conductive member and the auxiliary pin are assembled together;

Fig. 9 is a schematic structural diagram of the relay structure according to embodiment 3 of the present utility model when the movable contact pair and the auxiliary pin are assembled together;

fig. 10 is a schematic structural diagram of the relay structure according to embodiment 4 of the present utility model when the movable contact pair and the auxiliary pin are assembled together;

fig. 11 is a schematic structural view of the support member according to the present utility model.

The following description is made with reference to the accompanying drawings:

1. A contact assembly; 10. a lead-out sheet; 11. a stationary contact; 12. a support;

120. A mounting hole; 13. a moving contact; 2. a conductive member; 20. a main body portion; 21. a connection part A; 3. auxiliary pins; 30. a pin body; 31. a connecting part B; 32. a joint portion; 40. a coil; 41. a magnetic core; 42. a yoke; 43. an armature; 5. an outer housing; 6. and (5) a base.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1:

Referring to fig. 1 to 7, embodiment 1 provides a relay, which mainly includes an outer housing 5, a base 6, two groups of contact assemblies 1 and two groups of driving devices, wherein the outer housing 5 and the base 6 are surrounded to form a housing cavity, and both the two groups of contact assemblies 1 and the two groups of driving devices are housed in the housing cavity; the two groups of contact assemblies 1 respectively comprise a leading-out sheet 10 for being connected into an external electric loop, a fixed contact 11 arranged on the leading-out sheet 10, a supporting piece 12 positioned at the side of the leading-out sheet 10 and a moving contact 13 arranged on the supporting piece 12 and opposite to the fixed contact 11 at the same time, the moving contacts 13 in the two groups of contact assemblies 1 are arranged in a one-to-one correspondence manner so as to form a moving contact pair comprising two moving contacts 13 arranged correspondingly, the two moving contacts 13 in the moving contact pair are also connected in series through a conducting piece 2, and it can be understood that the two moving contacts 13, the conducting piece 2 and the two fixed contacts 11 arranged opposite to the two moving contacts 13 form a switch branch together; the two sets of driving devices are respectively connected with the two supporting pieces 12 correspondingly and can drive the moving contact 13 to be in or out of suction connection with the fixed contact 11, and it is understood that when the moving contact 13 is in suction connection with the fixed contact 11, the switch branch is in a passage state, and when the moving contact 13 is out of contact with the fixed contact 11, the switch branch is in an open state. In particular, the relay is further provided with an auxiliary pin 3, and the auxiliary pin 3 is electrically connected with the conductive member 2, so as to realize synchronous monitoring of the working states of the two groups of contact assemblies 1.

The working principle of the auxiliary pin 3 for synchronously monitoring the working states of the two groups of contact assemblies 1 is as follows:

For the sake of brevity and clarity to explain the monitoring principle of the auxiliary pin 3, two coil pins in the first group of driving devices are defined as 1# and 2# pins according to the conventional specifications of the relay industry; defining two coil pins in the second set of the driving devices as 3# and 4# pins; the lead-out tab 10 in the contact assembly 1 corresponding to the first set of the driving devices is defined as a pin 5#, the lead-out tab 10 in the contact assembly 1 corresponding to the second set of the driving devices is defined as a pin 6# and the auxiliary pin 3 is defined as a pin 7 #. The pins 1# to 7# extend out of the accommodating cavity so as to be convenient for accessing an external electric circuit.

① When the two groups of driving devices respectively drive the two supporting pieces 12 to act so that the moving contact 13 is in contact with the fixed contact 11:

If the pins 5# and 6# and the pin 7# have signal output, the signals indicate that the moving contact 13 and the fixed contact 11 in the two groups of contact assemblies 1 are closed/attracted normally;

If no signal is output from pins 5# and 6# and 7#, the movable contact 13 and the fixed contact 11 in the two groups of contact assemblies 1 are not normally closed;

If neither the pin 5 nor the pin 7 outputs a signal or neither the pin 6 nor the pin 7 outputs a signal, it indicates that the moving contact 13 and the fixed contact 11 in the contact assembly 1 corresponding to the pin 5 or the pin 6 are not normally closed.

② When the two groups of driving devices respectively drive the two supporting pieces 12 to act so as to disconnect the moving contact 13 from the fixed contact 11:

If no signal is output from pins 5# and 6# and 7#, the moving contact 13 and the fixed contact 11 in the two groups of contact assemblies 1 are normally disconnected;

If the pins 5# and 6# and the pin 7# have signal output, the abnormal adhesion of the moving contact 13 and the fixed contact 11 in the two groups of contact assemblies 1 is shown;

If the pins 5 and 7 have signal output and/or the pins 6 and 7 have signal output, it indicates that the movable contact 13 and the fixed contact 11 in the contact assembly 1 corresponding to the pin 5 or 6 have abnormal adhesion.

As can be seen from the above description, in this embodiment 1, only one auxiliary pin 3 is provided, so that the synchronous monitoring of the working states of the two groups of contact assemblies 1 can be realized; the convenience and the accuracy of the state identification work of the power distribution system are improved, so that the safety of the power distribution system is improved; and the auxiliary monitoring module (namely, the auxiliary module for monitoring the working state of the main contact in real time) is prevented from occupying more space, so that the relay structure is simplified, the volume of the relay is reduced, and the manufacturing cost of the relay is reduced. In a word, the auxiliary pin 3 provided in this embodiment 1 is combined with the conductive member 2, so that the applicability is good, the practicability is strong, and the popularization and application value is high.

The relay structure provided in this embodiment 1 is described in detail below.

First, the conductive member 2 and the auxiliary pin 3 are referred to.

In the relay structure provided in this embodiment 1, the structure for implementing the connection between the conductive member 2 and the moving contact 13 and the auxiliary pin 3 is as follows: with continued reference to fig. 2 to 7, the conductive member 2 is provided with a main body 20 and a connection portion a21 integrally connected with the main body 20, wherein the main body 20 is fixed to and electrically connected with the two moving contacts 13, and the connection portion a21 is fixed to and electrically connected with the auxiliary pin 3.

Further preferably, the conductive member 2 is formed by using any one of flexible wires, flexible copper braided wires, and flexible copper bars formed by stacking a plurality of copper foils, that is: the conductive member 2 is a flexible connection member. By means of the conductive member 2, when the moving contact 13 and the fixed contact 11 perform the attraction or disconnection, if one group of the moving contact 13 and the fixed contact 11 are stuck, the other group of the moving contact 13 and the fixed contact 11 are not affected, so that the relay product can still realize partial functions, and complete failure is not caused, and the reliability and the use safety of the relay product are improved.

And based on the structural type of the conductive member 2, the specific structural designs of the main body portion 20 and the connection portion a21 may adopt the following modes: ① When the conductive member 2 is integrally formed by flexible wires or soft copper wires, it can be understood that the main body 20 is a main body of the conductive member 2, and the structure thereof is a flexible wire or soft copper wire; the connection portion a21 is understood to be a "lead" led out from the main body portion 20.

Or ② when the conductive member 2 integrally adopts a flexible copper bar, it can be understood that the main body portion 20 is used as a main body portion of the conductive member 2, and the structure thereof is shown as a flexible copper bar; the connection portion a21 is understood to be "a copper foil strip and/or a copper foil wire" led out from the main body portion 20.

Still further preferably, the connection portion a21 may be provided as one according to product design requirements, at which time the connection/layout relationship between the connection portion a21 and the main body portion 20 may be as follows: ① One end of the connecting portion a21 is integrally connected with the middle portion of the main body portion 20, and the other end of the connecting portion a21 is separated from the main body portion 20 and is fixedly connected with the auxiliary pin 3. Or ②, two ends of the connecting portion a21 are integrally connected with two ends of the main body portion 20, and the middle portion of the connecting portion a21 is separated from the main body portion 20 and is fixedly connected with the auxiliary pin 3.

Of course, the connection portions a21 are not limited to the above number and connection layout configuration, and may be specifically determined according to the design requirements of the relay product.

Still more preferably, as the above-mentioned "fixed connection between the main body 20 and the movable contact 13", and "fixed connection between the connection portion a21 and the auxiliary pin 3", there may be adopted:

The two ends of the main body part 20 are fixedly connected with the two moving contacts 13 in a riveting or welding mode respectively; the connection part a21 is fixedly connected with the auxiliary pin 3 by riveting or welding.

As can be seen from the above, the structure of the conductive member 2 and the auxiliary pin 3 and the connection method between them provided in embodiment 1 are very simple and easy to manufacture.

Next, with respect to the contact assembly 1 and the driving device.

For the sake of brevity and clarity in explaining the structure and working principle of the contact assembly 1 and the driving device, the relative arrangement relationship between the fixed contact 11 and the movable contact 13 is defined as follows according to the conventional specifications of the relay industry: the fixed contact 11 and the movable contact 13 are arranged vertically opposite to each other, and it is understood that the lead-out sheet 10 and the supporting member 12 in the same contact assembly 1 are arranged vertically; the azimuthal layout presented in combination with fig. 1 and 2 further yields: the movable contact 13 (and the supporting member 12) are located above the fixed contact 11 (and the lead-out sheet 10).

Based on the above-mentioned limitation of the azimuth layout of the fixed contact 11 and the movable contact 13, in the relay structure provided in this embodiment 1, the two groups of contact assemblies 1 may be set to be arranged side by side along the left-right direction, that is: the two lead-out tabs 10 are arranged side by side in the left-right direction, and the two supporting members 12 are arranged side by side in the left-right direction. As can be seen from fig. 2 to fig. 7, in each group of the contact assemblies 1, the number of the fixed contacts 11 and the number of the movable contacts 13 are all configured to be a plurality, and are arranged in a one-to-one correspondence manner; at the time, can be obtained: in each group of contact assemblies 1, a plurality of the fixed contacts 11 are arranged in parallel along the front-rear direction, and a plurality of the movable contacts 13 are also arranged in parallel along the front-rear direction. In addition, it can be understood that, since each group of the contact assemblies 1 is configured with a plurality of moving contacts 13, and correspondingly, a plurality of moving contact pairs are formed, and then a plurality of conductive members 2 are configured in a combined manner, two groups of the contact assemblies 1 form a plurality of switch branches, and the switch branches are connected in parallel, the resistance of the contact assemblies can be greatly reduced, and the load bearing capacity of the relay is further improved.

In addition, based on the above configuration of the plurality of the fixed contacts 11 and the movable contacts 13 in each group of the contact assemblies 1, the height of the plurality of the fixed contacts 11 may be adjusted in the embodiment 1, so as to achieve that the actions of the plurality of the fixed contacts 11 respectively connected to or disconnected from the plurality of the movable contacts 13 in a suction manner are not synchronized; and further, the contact resistance and the electric repulsive force between the moving contact and the fixed contact are reduced, so that the performance of a relay product is well optimized and improved, and the use risk of equipment is reduced. The technical means described above belong to conventional technical means in the relay field, as shown in the visible patent ZL202223099318.9, and therefore are not described herein.

With continued reference to fig. 2 to fig. 4, in the relay structure provided in embodiment 1, two sets of driving devices are arranged side by side along the left-right direction based on the above-mentioned orientation limitation; each group of driving device comprises a coil 40, a magnet core 41, a yoke 42 and an armature 43, wherein the magnet core 41 is transversely inserted into a space surrounded by the coil 40, the yoke 42 is transversely arranged beside the lower side of the coil 40 and is simultaneously connected with the tail end of the magnet core 41, the armature 43 is vertically arranged beside the head end of the magnet core 41, and meanwhile, the armature 43 is also rotationally connected with the rear end side of the yoke 42 and forms a rotation fulcrum at the joint, namely: the armature 43 can be pivoted about the pivot point.

The rear ends of the two supporting pieces 12 in the two groups of contact assemblies 1 are respectively and fixedly connected with the lower ends of the two armatures 43 (which can be realized through an injection molding process), so that when the set voltage is applied to the two coils 40, the two armatures 43 can deflect positively, the upper ends of the two armatures 43 are respectively connected with the head ends of the two magnet cores 41 in an attracting way, and the lower ends of the two armatures 43 drive the two supporting pieces 12 to swing obliquely downwards, so that the attraction communication between the moving contact 13 and the fixed contact 11 is realized; when both coils 40 are powered off, the two armatures 43 can deflect reversely, so that the upper ends of the two armatures 43 are disconnected with the head ends of the two magnet cores 41 respectively, and the lower ends of the two armatures 43 drive the two supporting pieces 12 to tilt upwards and swing, so that the moving contact 13 is disconnected with the fixed contact 11.

Description: the driving device structure adopted in this embodiment 1 belongs to the conventional technical means in the clapping relay, and the driving device is not described in detail herein because it does not belong to the technical points to be protected by the present patent.

Example 2:

The embodiment 2 also provides a relay, and compared with the embodiment 1, the main difference of the embodiment 2 is that: the specific connection manner between the auxiliary pin 3 and the conductive member 2 is different from that of embodiment 1.

Specifically, referring to fig. 8, in the relay structure provided in this embodiment 2, the conductive member 2 is any one of a flexible conductive wire, a soft copper braid, and a flexible copper bar formed by stacking a plurality of copper foils, and the conductive member 2 is an elongated integrated structure. The auxiliary pin 3 has an integral structure with a plurality of bending sections, one bending section is used for being connected into an external electric circuit, and the other bending section is fixedly connected with the conductive piece 2 in a riveting or welding mode.

Further preferably, the auxiliary pins 3 may have a zigzag shape.

Compared with embodiment 1, the structure of the auxiliary pin 3 and the conductive member 2 and the specific connection manner between them provided in embodiment 2 are also very simple and easy to manufacture.

Description: in addition to the above-described differences, the other components in the relay structure provided in embodiment 2 are specifically as follows: contact assemblies, drive devices, etc.; the same corresponding structure as that of embodiment 1 can be adopted, and thus, the description thereof will be omitted.

Example 3:

Embodiment 3 also provides a relay, and compared with embodiment 1, the main difference of embodiment 3 is that: the specific technical means for synchronously monitoring the working states of the two groups of contact assemblies 1 by using the auxiliary pins 3 is different from that of the embodiment 1.

Specifically, in the relay structure provided in this embodiment 3, the auxiliary pin 3 is electrically connected to the moving contact pair (specifically, to the two moving contacts 13 in the moving contact pair), so as to realize synchronous monitoring of the working states of the two groups of contact assemblies 1.

Further preferably, the structure for electrically connecting the auxiliary pin 3 with the two moving contacts 13 in the moving contact pair is as follows: referring to fig. 9, the auxiliary pin 3 is provided with a pin body 30 for accessing an external electrical circuit, and two connection portions B31 respectively fixed to and electrically connected with the pin body 30, and the two connection portions B31 are respectively and correspondingly fixed to the two movable contacts 13.

Still further preferably, the structure for realizing the fixed connection between the connection portion B31 and the pin body 30 is as follows: with continued reference to fig. 9, the auxiliary pin 3 is further provided with two connection portions 32, and the two connection portions 32 are of a bent structure, so as to avoid other structures of the relay and adapt to the installation space, and the two connection portions 32 are integrally connected between the two connection portions B31 and the pin main body 30, respectively.

The structure for realizing the fixed connection between the connecting part B31 and the two moving contacts 13 is as follows: the connecting portion B31 is fixedly connected with one end of the moving contact 13 opposite to the fixed contact 11 through riveting or welding.

Compared with embodiment 1, the structure of the auxiliary pin 3 and the specific connection manner between the auxiliary pin and the movable contact 13 in embodiment 3 are also very simple and easy to manufacture.

Description: in addition to the above-described differences, the other components in the relay structure provided in embodiment 3 are specifically as follows: contact assemblies, drive devices, etc.; the same corresponding structure as that of embodiment 1 can be adopted, and thus, the description thereof will be omitted.

In addition, since the number of the moving contact pairs configured in embodiment 3 is plural based on the above description, the auxiliary pin 3 may be selectively electrically connected to one of the moving contact pairs, which further improves convenience in mounting and layout of the auxiliary pin 3.

Example 4:

Embodiment 4 also provides a relay, and compared with embodiment 3, the main difference of embodiment 4 is that: the manner of electrical connection between the connection portion B31 and the pair of moving contacts (specifically, the two moving contacts 13 in the pair of moving contacts) is different from that of embodiment 3.

Specifically, the electrical connection manner between the connection portion B31 and the moving contact 13 provided in embodiment 4 is as follows: referring to fig. 10 and 11, the supporting member 12 is provided with a mounting hole 120 for mounting the movable contact 13; the connecting part B31 is fixedly connected to the supporting member 12, and the connecting part B31 is provided with a through hole coaxial with and penetrating the mounting hole 120; when the movable contact 13 is fixedly arranged in the mounting hole 120, the movable contact 13 is tightly fitted through the through hole so as to be in contact conduction with the connecting portion B31.

Further preferably, the connecting portion B31 is fixedly connected to the supporting member 12 by riveting or welding.

Compared with embodiment 3, the structure of the auxiliary pin 3 and the specific connection manner between the auxiliary pin and the movable contact 13 in embodiment 4 are also very simple and easy to manufacture.

Description: in addition to the above-described differences, the other components in the relay structure provided in embodiment 4 are specifically as follows: contact assemblies, drive devices, etc.; the same corresponding structure as that of embodiment 3 can be adopted, and thus, the description thereof will be omitted.

In summary, the relay can realize synchronous monitoring of the working states of the two groups of contact assemblies through one auxiliary pin, so that the convenience and the accuracy of the state identification work of the power distribution system are improved, and the safety of the power distribution system is improved; and the auxiliary monitoring module is prevented from occupying more space, the relay structure is simplified, the volume of the relay is reduced, and the manufacturing cost of the relay is reduced.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (10)

1. The relay comprises two groups of contact assemblies (1), wherein each group of contact assemblies (1) comprises an extraction sheet (10) for being connected into an external electric loop, a fixed contact (11) arranged on the extraction sheet (10), a supporting piece (12) arranged on the side of the extraction sheet (10) and a moving contact (13) arranged on the supporting piece (12) and opposite to the fixed contact (11) at the same time, the moving contacts (13) in the two groups of contact assemblies (1) are arranged in a one-to-one correspondence manner so as to form a moving contact pair comprising two moving contacts (13) which are arranged correspondingly, and the two moving contacts (13) in the moving contact pair are connected in series through a conductive piece (2); the method is characterized in that: the movable contact is provided with an auxiliary pin (3), and the auxiliary pin (3) is selectively electrically connected with the conductive piece (2) or the movable contact pair so as to realize synchronous monitoring of working states of the two groups of contact assemblies (1).

2. The relay of claim 1, wherein: the auxiliary pin (3) is electrically connected with the conductive piece (2).

3. The relay according to claim 2, wherein: the conductive piece (2) is provided with a main body part (20) which is fixedly and electrically connected with the two movable contacts (13) and a connecting part A (21) which is integrally connected with the main body part (20), and the connecting part A (21) is fixedly and electrically connected with the auxiliary pin (3).

4. The relay according to claim 2, wherein: the auxiliary pin (3) is of an integrated structure with a plurality of bending sections, one bending section is used for being connected into an external electric loop, and the other bending section is fixedly connected with the conductive piece (2).

5. The relay of claim 1, wherein: the auxiliary pin (3) is electrically connected with the two moving contacts (13) in the moving contact pair.

6. The relay of claim 5, wherein: the auxiliary pin (3) is provided with a pin main body (30) for accessing an external electric loop and two connecting parts B (31) which are respectively fixed with the pin main body (30) and are electrically connected, and the two connecting parts B (31) are respectively and correspondingly connected with the two moving contacts (13) in a fixed mode or in a contact mode.

7. The relay of claim 6, wherein: the connecting part B (31) is fixedly connected with one end of the moving contact (13) which is opposite to the fixed contact (11);

or the supporting piece (12) is provided with a mounting hole (120) for mounting the movable contact (13), the connecting part B (31) is fixedly connected to the supporting piece (12), and the connecting part B (31) is provided with a through hole which is coaxial with and penetrates through the mounting hole (120); when the movable contact (13) is fixedly arranged in the mounting hole (120), the movable contact (13) is tightly matched with the through hole so as to realize contact conduction with the connecting part B (31).

8. The relay of claim 6, wherein: the auxiliary pin (3) is further provided with two connecting portions (32), the two connecting portions (32) are of a bending structure, and the two connecting portions (32) are respectively and correspondingly integrally connected between the two connecting portions B (31) and the pin main body (30).

9. The relay of claim 5, wherein: in each group of contact assemblies (1), the number of the fixed contacts (11) and the number of the movable contacts (13) are multiple, and the fixed contacts and the movable contacts are arranged in a one-to-one correspondence manner;

Correspondingly, the number of the moving contact pairs is also a plurality, and the auxiliary pin (3) is selectively and electrically connected with one of the moving contact pairs.

10. The relay of claim 1, wherein: the conductive piece (2) is any one of a flexible lead, a soft copper braided wire or a flexible copper bar formed by stacking a plurality of copper foils;

The relay is also provided with two groups of driving devices, the two groups of driving devices are respectively connected with the two supporting pieces (12) correspondingly, and the driving devices can drive the moving contact (13) to be connected with or disconnected from the fixed contact (11) in a suction way.