CN214672418U

CN214672418U - High-voltage direct-current relay with auxiliary switch

Info

Publication number: CN214672418U
Application number: CN202121232703.9U
Authority: CN
Inventors: 殷秋生; 金建领; 屈淑亚; 姚曼
Original assignee: Bengbu Shuanghuan Electronics Group Co ltd
Current assignee: Bengbu Shuanghuan Electronics Group Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-11-09
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a high-voltage direct-current relay with an auxiliary switch, which comprises a main stationary contact, an arc extinguishing chamber, an auxiliary switch component, a bridging contact component and a coil component; the arc extinguishing bin is matched with a support in the bridging contact assembly to form a cavity for accommodating the bridging contact; the two main stationary contacts are arranged above the arc extinguishing bin and enable the contact surface at the bottom of the main stationary contacts to be positioned in the cavity; the utility model relates to an automatic control technical field. This high-voltage direct current relay with auxiliary switch draws forth the connected mode of end and supplementary preceding stationary contact and supplementary back stationary contact through auxiliary switch subassembly second, can regard as two kinds of working methods of normally open signal detection and normally closed signal detection respectively when not increasing the part or changing the structure, is suitable for multiple operation requirement.

Description

High-voltage direct-current relay with auxiliary switch

Technical Field

The utility model relates to an automatic control technical field specifically is a high-voltage direct current relay with auxiliary switch.

Background

Under the large environment of high-speed development of new energy, the application of the high-voltage direct-current contactor is more and more mature. Especially, the equipment adopts matrix layout and annular power supply, and hundreds of contactors are connected in series and parallel through copper bars for use. If a single contactor fails, a plurality of screws must be disassembled to complete the replacement of a certain contactor. The maintenance man-hour is too long, and the maintenance cost is high. The requirements for high voltage direct current contactors are therefore also becoming more stringent. The quality of the contactor must be highly reliable. In the existing high-voltage direct-current contactor in the market, auxiliary contacts report auxiliary faults sometimes in the long-time static pressure use process.

This patent is a neotype auxiliary switch structure, mainly solves the auxiliary contact reliability problem of contactor to this structure has simplified contactor assembly process, can improve production efficiency greatly.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a high voltage direct current relay with auxiliary switch has solved the problem of the auxiliary contact reliability of contactor.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-voltage direct-current relay with an auxiliary switch comprises a main fixed contact, an arc extinguishing chamber, an auxiliary switch assembly, a bridging contact assembly and a coil assembly;

the arc extinguishing bin is matched with a support in the bridging contact assembly to form a cavity for accommodating the bridging contact; the two main stationary contacts are arranged above the arc extinguishing bin and enable the contact surface at the bottom of the main stationary contacts to be positioned in the cavity;

the bridging contact assembly comprises a yoke iron plate, a support, a push rod assembly, a bridging contact and a push rod, wherein the bridging contact and the push rod are installed at the head of the push rod;

the auxiliary switch assembly comprises a PCB (printed circuit board), an auxiliary movable spring, an auxiliary front static spring, an auxiliary rear static spring and two conductive leading-out ends, and is fixed on the outer side of the arc extinguishing chamber through a screw; the conductive leading-out ends are rectangular with two fixed welding feet on the side edges, the lower ends of the two conductive leading-out ends are fixed at one end of the PCB through the fixed welding feet, and the upper ends of the two conductive leading-out ends penetrate through the arc extinguishing chamber to the upper part of the arc extinguishing chamber to form a first leading-out end and a second leading-out end; the auxiliary front static reed and the auxiliary rear static reed are rectangles with two auxiliary welding feet at the bottom, the auxiliary front static reed and the auxiliary rear static reed are fixed on the PCB through the auxiliary welding feet and are arranged in parallel, the auxiliary rear static reed positioned above is a normally open static reed, and the auxiliary front static reed positioned below is a normally closed static reed; the auxiliary movable reed is a rectangular metal plate with side edge welding feet, one end of the auxiliary movable reed is fixed on the PCB through the welding feet and is horizontally arranged, the auxiliary movable reed is opposite to the cylindrical step of the push rod, and the swing end of the auxiliary movable reed extends to the position between the auxiliary front static reed and the auxiliary rear static reed.

As a further aspect of the present invention: the first leading-out end of the auxiliary switch component is communicated with the fixed end of the auxiliary movable reed; the second is drawn forth the end and is passed through short circuit pad and pad for the second is drawn forth end and supplementary back static reed intercommunication, and auxiliary signal is for normally opening, and the second is drawn forth the end and is passed through short circuit pad and pad, makes the second draw forth end and supplementary preceding static reed intercommunication, and auxiliary signal is the normally closed.

As a further aspect of the present invention: the auxiliary movable spring is tightly pressed on the auxiliary front static spring; when the bridging contact and the main fixed contact are closed, the auxiliary movable reed is tightly pressed on the auxiliary rear fixed reed under the action of the push rod.

Compared with the prior art, the utility model discloses there is following function:

the utility model discloses in, with first end and the supplementary movable contact spring stiff end intercommunication of drawing forth, the second is drawn forth the end and is passed through the first pad of short circuit and second pad, make the second draw forth end and supplementary back stationary contact intercommunication, form normally open detected signal, when the coil does not work, the swing end of supplementary movable contact spring pastes tight normally closed reed, signal circuit does not switch on, after the coil work, promote bridging contact upward movement and main stationary contact through the electromagnetic force, the push rod upward movement thereupon, with supplementary movable contact spring upward movement and normally open reed contact, signal circuit switches on, this connected mode is normally open signal detection mode.

On the contrary, the first leading-out end is communicated with the fixed end of the auxiliary movable reed, the second leading-out end is communicated with the auxiliary front static reed through short-circuit of the first bonding pad and the third bonding pad to form a normally closed detection signal, when the coil does not work, the swinging end of the auxiliary movable reed is tightly attached to the normally closed reed, and the signal circuit is conducted; after the coil works, the electromagnetic force pushes the bridging contact to move upwards to be in contact with the main fixed contact, the push rod moves upwards along with the bridging contact, the auxiliary movable reed is pushed to move upwards to be separated from the normally closed reed and to be in contact with the normally open reed, the signal circuit is disconnected, and the connection mode is a normally closed signal detection mode.

The detection function of the position of the bridging contact is realized through the two modes.

Advantageous effects

The utility model provides a high-voltage direct current relay with auxiliary switch. Compared with the prior art, the method has the following beneficial effects: adopt normally open static reed and normally closed static reed parallel arrangement, supplementary movable contact spring one end is fixed, supplementary movable contact spring swing end is in between normally open static reed and the normally closed static reed and hugs closely on the normally closed reed, the coil does not work the time, supplementary movable contact spring swing end and normally closed reed contact, the bridging contact is in the release state, the coil during operation moves the magnetic core upward movement, bridging contact and main stationary contact, the push rod upward movement, push rod cylindricality step promotes supplementary movable contact spring upward movement and normally open reed contact, the bridging contact is in the actuation state this moment, draw forth the connected mode of end and supplementary preceding stationary contact and supplementary back stationary contact through auxiliary switch subassembly second, can regard as normally open signal detection and normally closed signal detection two kinds of working methods respectively when not increasing the part or changing the structure, be suitable for multiple operation requirement.

Drawings

Fig. 1 is a schematic perspective view of an example of the present invention;

fig. 2 is a front view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the coil when not in operation;

FIG. 5 is a schematic diagram of the coil after operation;

FIG. 6 is a schematic view of the position of the auxiliary switch assembly and the push rod when the coil is not in operation;

fig. 7 is a schematic diagram of the position of the auxiliary switch assembly and the push rod after the coil is operated.

In the figure: 1. a main stationary contact; 2. an arc extinguishing bin; 3. an auxiliary switch assembly; 4. a screw; 5. a bridging contact assembly; 6. a coil; 7. an exhaust pipe; 8. an upper cover; 9. a housing; 21. a cavity; 51. bridging contacts; 52. a push rod; 53. a yoke iron plate; 54. a support; 521. a groove; 522. a cylindrical step; 31. a PCB board; 32. a conductive terminal; 33. an auxiliary stationary reed; 34. an auxiliary movable spring plate; 321. a first lead-out terminal; 322. a second lead-out terminal; 323. fixing the welding leg; 331. a normally open static reed; 332. normally closing the static reed; 333. auxiliary welding feet; 341. welding feet; 342. the swing end of the auxiliary movable spring leaf; 351. a first pad; 352. a second pad; 353. and a third bonding pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a high-voltage direct-current relay with an auxiliary switch comprises a main stationary contact 1, an arc extinguishing chamber 2, an auxiliary switch assembly 3, a bridging contact assembly 5, a coil 6, an exhaust pipe 7, an upper cover 8 and a shell 9;

the arc extinguishing chamber 2 and the support 54 in the bridging contact assembly 5 are matched to form a cavity 21 for accommodating the bridging contact 51; the two main stationary contacts 1 are arranged above the arc extinguishing chamber 2, and the contact surface 111 at the bottom of the main stationary contact 1 is positioned in the cavity 21;

the bridging contact assembly 5 comprises a yoke iron plate 53, a support 54, a push rod assembly 55, and a bridging contact 51 and a push rod 52 which are arranged on the head 511 of the push rod, wherein the head 511 of the push rod penetrates through the yoke iron plate 53 and is positioned in the cavity 21, two ends of the bridging contact 51 correspond to the contact surfaces 111 of the two main stationary contacts 1, one end of the push rod 52 forms a C-shaped groove 521, the bridging contact 51 is wrapped to enable the push rod 52 to be fixed on the bridging contact 51, an insulating arm on one side of the C-shaped groove 521 extends outwards from the arc extinguishing chamber 2, one end extending out of the arc extinguishing chamber 2 is a cylindrical step 522, and the tail of the bridging contact 51 assembly penetrates through the yoke iron plate 53 and is matched with the coil assembly 6 below;

the auxiliary switch component 3 comprises a PCB (printed circuit board) 31, an auxiliary movable spring 34, an auxiliary static spring 33 and two conductive leading-out ends 32, and the auxiliary switch component 3 is fixed on the outer side of the arc extinguishing chamber 2 through a screw 4; the auxiliary static spring plate 33 is divided into an auxiliary front static spring plate and an auxiliary rear static spring plate, the auxiliary conductive leading-out end 32 is rectangular with two fixed welding feet 323 on the side edge, the lower ends of the two conductive leading-out ends 32 are fixed on one end of the PCB 31 through the fixed welding feet 323, and the upper ends penetrate through the arc extinguishing chamber 2 to the upper part of the arc extinguishing chamber 2 to form a first leading-out end 321 and a second leading-out end 322; the auxiliary front static reed and the auxiliary rear static reed are rectangles with two auxiliary welding feet 333 at the bottom, and are fixed on the PCB 31 through the auxiliary welding feet 333, the auxiliary front static reed and the auxiliary rear static reed are arranged in parallel, the auxiliary rear static reed positioned above is a normally open static reed 331, and the auxiliary front static reed positioned below is a normally closed static reed 332; the auxiliary movable spring 34 is a rectangular and elastic metal plate with welding feet 341 on the side, one end of the auxiliary movable spring 34 is fixed on the PCB 31 through the welding feet 341 and is horizontally arranged, opposite to the cylindrical step 522 of the push rod 52, and the swing end 342 of the auxiliary movable spring extends between the auxiliary front static spring and the auxiliary rear static spring;

the utility model discloses when implementing, draw end 321 and supplementary movable reed 34 leg 341 end to switch on, the second is drawn forth end 322 and is passed through first pad 351 of short circuit and second pad 352 for the second is drawn forth end 322 and is normally opened stationary reed 331 and communicate, when coil pack 6 did not work, supplementary movable reed swing end 342 pastes close normally closed stationary reed 332, draw the end 321 to the second and draw open circuit between the end 322, no detected signal, it is not contacted with bridging contact 51 to reflect main stationary contact 1, high-voltage direct-current relay is in the off-state; after the coil assembly 6 works, the bridge contact 51 is pushed to move upwards to be in contact with the main fixed contact 1 through electromagnetic force, the push rod 52 moves upwards along with the bridge contact, the swing end 342 of the auxiliary movable spring leaf is pushed to move upwards to be in contact with the normally open fixed spring leaf 331, a circuit between the first leading-out end 321 and the second leading-out end 322 is conducted, a detection signal is output, and the high-voltage direct-current relay is in an attraction state;

conversely, the first leading-out end 321 is conducted with the welding leg 341 end of the auxiliary movable reed 34, the second leading-out end 322 is short-circuited with the first bonding pad 351 and the third bonding pad 353, so that the second leading-out end 322 is communicated with the normally closed stationary reed 332, when the coil assembly 6 does not work, the auxiliary movable reed swinging end 342 is tightly attached to the normally closed stationary reed 332, a circuit between the first leading-out end 321 and the second leading-out end 322 is conducted, a detection signal is output, it is reflected that the main stationary contact 1 is not contacted with the bridging contact 51, and the high-voltage direct-current relay is in a disconnected state; after the coil assembly 6 works, the bridge contact 51 is pushed to move upwards to be in contact with the main fixed contact 1 through electromagnetic force, the push rod 52 moves upwards along with the bridge contact, the swing end 342 of the auxiliary movable spring leaf is pushed to move upwards to be in contact with the normally open fixed spring leaf 331, a circuit between the first leading-out end 321 and the second leading-out end 322 is disconnected, no detection signal is output, and the high-voltage direct-current relay is in an attraction state.

The utility model has the advantages that the utility model discloses a static reed before supplementary, supplementary back static reed are arranged perpendicularly, and supplementary movable reed 34 one end is fixed, and supplementary movable reed swing end 342 is in and hugs closely on normally closed static reed 332 between normally open static reed 331 and normally closed static reed 332, draws forth the connected mode of end 322 and supplementary preceding static reed, supplementary back static reed through the second, can regard as normally open signal detection and normally closed signal detection two kinds of working methods respectively when not increasing part or change structure, is suitable for multiple operation requirement.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-voltage direct-current relay with an auxiliary switch is characterized in that: the arc extinguishing chamber comprises a main fixed contact, an arc extinguishing chamber, an auxiliary switch assembly, a bridging contact assembly and a coil assembly;

2. The HVDC relay with auxiliary switch of claim 1, wherein: the first leading-out end of the auxiliary switch component is communicated with the fixed end of the auxiliary movable reed; the end is drawn forth through the first pad of short circuit and second pad to the second for the second is drawn forth end and supplementary back static reed intercommunication, and auxiliary signal is for normally opening, and the second is drawn forth the end and is passed through the first pad of short circuit and third pad, makes the second draw forth end and supplementary preceding static reed intercommunication, and auxiliary signal is the normally closed.

3. The HVDC relay with auxiliary switch of claim 1, wherein: the auxiliary movable spring is tightly pressed on the auxiliary front static spring; when the bridging contact and the main fixed contact are closed, the auxiliary movable reed is tightly pressed on the auxiliary rear fixed reed under the action of the push rod.