CN218896595U - Arc extinguishing structure and contactor - Google Patents

Abstract

The utility model relates to the technical field of electrical elements, in particular to an arc extinguishing structure and a contactor. The arc extinguishing structure provided by the utility model comprises: the base is internally provided with a plurality of groups of first accommodating cavities, the first accommodating cavities are suitable for accommodating the moving contact and the fixed contact, and the side wall of the base is correspondingly provided with a plurality of groups of leading-out holes communicated with the first accommodating cavities; the fixed contact is a bending piece, the first end of the fixed contact is arranged in the first accommodating cavity, and the second end of the fixed contact extends outwards from the leading-out hole; the baffle is connected with the base, and inside is provided with a plurality of groups of second and holds the chamber, and the baffle is towards the lateral wall of base and has seted up a plurality of groups of introduction holes that communicate the second and hold the chamber correspondingly, and the second end of stationary contact stretches into in the introduction hole, corresponds on the baffle to set up a plurality of groups and hold the wiring mouth that the chamber communicates with the second. According to the arc extinguishing structure provided by the utility model, the wiring port is not easy to extend out of the arc, the safety of products is improved, and in addition, black residues generated by the arc are not easy to directly splash out, so that the user experience is improved.

Description

Arc extinguishing structure and contactor

Technical Field

The utility model relates to the technical field of electrical elements, in particular to an arc extinguishing structure and a contactor.

Background

Contactors refer to electrical appliances that utilize a coil to flow current to generate a magnetic field in industrial electricity, so that contacts are closed to control loads. The working principle is as follows: when the contactor coil is electrified, coil current can generate a magnetic field, the generated magnetic field enables the static iron core to generate electromagnetic attraction to attract the insertion core, the movable contact of the contactor is driven to act, the normally closed contact is opened, the normally open contact is closed, and the two contacts are linked; when the coil is powered off, the electromagnetic attraction force disappears, the insert core is released under the action of the release spring, the contact is restored, the normally open contact is opened, and the normally closed contact is closed.

The existing contactor generates electric arc when the movable contact and the fixed contact are disconnected, and because the wiring end of the contact directly extends to the contactor shell, the electric arc directly extends to the outside of a product to pollute the contactor and a cabinet body, black residues generated by the electric arc splash out of the contactor to influence the use experience of customers, the human eyes can be burnt by the electric arc light, and the electric arc light has the risk of breakdown damage to electronic products in the control cabinet to cause safety accidents.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the electric arc in the prior art is easy to stretch out of the contactor and has potential safety hazard, so as to provide an arc extinguishing structure and the contactor.

The arc extinguishing structure provided by the utility model comprises:

the base is internally provided with a plurality of groups of first accommodating cavities, the first accommodating cavities are suitable for accommodating moving contacts and fixed contacts, and the side wall of the base is correspondingly provided with a plurality of groups of leading-out holes communicated with the first accommodating cavities;

the fixed contact is a bending piece, a first end of the fixed contact is arranged in the first accommodating cavity, and a second end of the fixed contact extends out of the leading-out hole;

the baffle, with pedestal connection, inside is provided with a plurality of groups of second and holds the chamber, the baffle orientation the lateral wall of base corresponds and has seted up a plurality of groups of introduction holes that communicate the second and hold the chamber, the second end of static contact stretches into in the introduction hole, a plurality of groups of on the baffle with the wiring mouth that the chamber was held to the second communicates has been seted up.

Optionally, the lateral wall bottom of base is provided with the boss, the baffle is located boss top and with boss butt.

Optionally, the bottom surface of baffle is provided with joint foot and/or draw-in groove, the boss top surface correspond offered with draw-in groove and/or the joint foot of joint foot adaptation, the joint foot card is gone into in the draw-in groove.

Optionally, the side wall of the base and/or the baffle plate is provided with a back-off groove with the same number as that of the first accommodating cavity group, so that an avoidance space is formed between the base and the baffle plate, and the avoidance space is communicated with the leading-out hole.

Optionally, the side wall of baffle is provided with the same butt foot of first accommodation chamber group number, the butt end of butt foot is towards the side wall of base, the butt foot is suitable for with the static contact butt press in the base.

Optionally, the lateral wall of baffle offer with first hold the louvre that chamber group number is the same, the louvre intercommunication dodge the space with the second holds the chamber.

Optionally, the spout has been seted up to the lateral wall of base, the lateral wall of spout is fixed with the card strip, the lateral wall of baffle correspond be provided with the slider of spout adaptation, the base with baffle sliding connection, the card strip is suitable for preventing the slider is followed deviate from in the spout.

The contactor provided by the utility model comprises:

the arc extinguishing structure;

the cover plate is fixedly connected with the base of the arc extinguishing structure and is abutted to the baffle of the arc extinguishing structure, through holes with the same number as that of the first accommodating cavity groups of the arc extinguishing structure are formed in the top of the cover plate, and the through holes are communicated with the second accommodating cavity of the arc extinguishing structure.

Optionally, the first accommodating cavity is embedded with an arc extinguishing member;

the bottom of the cover plate is provided with an abutting seat, the bottom end of the abutting seat abuts against the top end of the arc extinguishing piece, an abutting table extends outwards from the bottom end of the abutting seat, and the abutting seat is in conformal fit with the top end and the inner wall of the arc extinguishing piece;

and/or the contactor comprises an inserting core, the inserting core is fixedly connected with the plurality of groups of moving contacts, the inserting core is inserted into the base, a partition board is arranged at the bottom of the cover plate, and the partition board is positioned between the inserting core and the arc extinguishing piece.

Optionally, the contactor still includes wiring portion, wiring portion includes wire frame, wire screw rod, presser foot, the wire frame is cavity annular frame, the wire frame slides and sets up the first intracavity that holds of arc extinguishing structure, the second end of the static contact of arc extinguishing structure stretches into the wire frame, the top of wire frame seted up with the screw hole of wire screw rod adaptation, the wire screw rod stretch into the through-hole and with wire frame threaded connection, the tail end connection of wire screw rod has the presser foot, the wire screw rod with leave the clearance between the through-hole.

The utility model has the following advantages:

1. according to the arc extinguishing structure provided by the utility model, the fixed contact is the bending piece, the first end of the fixed contact is arranged in the first accommodating cavity of the base, the second end of the fixed contact stretches into the introducing hole of the baffle, the first accommodating cavity of the base is also provided with the moving contact, when the moving contact is separated from the fixed contact, arc energy generated between the contacts is discharged from the baffle along the bent fixed contact, the bent fixed contact can provide a longer cooling path for an arc, the wiring port is not easy to stretch out of the arc, breakdown damage to electronic products in the control cabinet is avoided, the product safety is improved, and in addition, black residues generated by the arc are not easy to directly splash out, and the user experience is improved.

2. According to the arc extinguishing structure provided by the utility model, the side wall of the base and/or the baffle is provided with the relief groove so as to form the relief space between the base and the baffle, the relief space is communicated with the first accommodating cavity, the side wall of the baffle is provided with the radiating hole, the radiating hole is communicated with the relief space and the second accommodating cavity, the static contact penetrates through the relief space, when an electric arc is generated, the relief space between the base and the baffle can disperse the energy of the electric arc, the electric arc discharges the energy through a plurality of movement channels after passing through the relief space, the energy of the electric arc is not easy to gather, and the arc extinguishing effect is improved.

3. The contactor provided by the utility model has any of the advantages because of the arc extinguishing structure.

4. According to the contactor provided by the utility model, the bottom end of the abutting seat is abutted with the top end of the arc extinguishing piece, the abutting table is outwards extended from the bottom end of the abutting seat and is attached to the inner wall of the arc extinguishing piece, and the abutting seat is matched with the top end of the arc extinguishing piece and the inner wall in a shape, so that arc light can be prevented from escaping through the cover plate, and arc energy is suitably guided to be discharged out of the base through the leading-out hole.

5. According to the contactor provided by the utility model, the partition plate is arranged at the bottom of the cover plate, and is positioned between the insert core and the arc extinguishing piece, so that arc light can be prevented from escaping through the cover plate, and the contactor is suitable for guiding arc energy to be discharged out of the base through the leading-out hole.

6. According to the contactor provided by the utility model, the wire connection frame is arranged in the first accommodating cavity of the arc extinguishing structure in a sliding manner, the wire connection screw rod extends into the through hole and is in threaded connection with the wire connection frame, a gap is reserved between the wire connection screw rod and the through hole, so that arc energy in the second accommodating cavity can be discharged through the through hole, and the arc energy is prevented from being concentrated in a product.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a base of an arc extinguishing structure according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a baffle plate of an arc extinguishing structure according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a baffle plate of an arc extinguishing structure according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a contactor according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a contactor according to an embodiment of the utility model;

FIG. 6 is a schematic bottom view of a cover plate of a contactor according to an embodiment of the utility model;

fig. 7 is a schematic structural view of a connection portion of a contactor according to an embodiment of the present utility model;

fig. 8 is a schematic connection diagram of a connection portion of a contactor according to an embodiment of the utility model.

Reference numerals illustrate:

10. a base; 101. a first accommodation chamber; 11. a lead-out hole; 12. a stationary contact; 13. a boss; 131. a clamping groove; 14. a relief groove; 15. a chute; 151. clamping strips; 16. arc extinguishing pieces; 20. a baffle; 201. a second accommodation chamber; 21. an introduction hole; 22. a wiring port; 23. a clamping pin; 24. the abutting pin; 25. a heat radiation hole; 26. a slide block; 27. a transition rib; 28. a barrier strip; 30. a cover plate; 31. a through hole; 32. a fixing screw; 33. a butt joint seat; 331. an abutment; 34. a partition plate; 40. a core insert; 41. a moving contact; 50. a wire frame; 51. a wire connection screw; 52. and (5) pressing feet.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

Referring to fig. 1 to 8, an arc extinguishing structure provided by an embodiment of the present utility model includes:

the base 10 is internally provided with a plurality of groups of first accommodating cavities 101, the first accommodating cavities 101 are suitable for accommodating the moving contact 41 and the fixed contact 12, and the side wall of the base 10 is correspondingly provided with a plurality of groups of leading-out holes 11 communicated with the first accommodating cavities 101;

the fixed contact 12 is a bending piece, a first end of the fixed contact 12 is arranged in the first accommodating cavity 101, and a second end of the fixed contact 12 extends out of the leading-out hole 11;

baffle 20 is connected with base 10, and inside is provided with a plurality of groups of second and holds the chamber 201, and baffle 20 is towards the lateral wall of base 10 and is provided with a plurality of groups of introduction holes 21 that communicate second and hold the chamber 201 correspondingly, and the second end of stationary contact 12 stretches into in the introduction hole 21, and a plurality of groups of wiring mouths 22 that communicate with second hold the chamber 201 have been offered to the correspondence on the baffle 20.

In this embodiment, the fixed contact 12 is a bending piece, the first end of the fixed contact 12 is disposed in the first accommodating cavity 101 of the base 10, the second end of the fixed contact 12 extends into the introducing hole 21 of the baffle 20, the first accommodating cavity 101 of the base 10 is further provided with the moving contact 41, when the moving contact 41 is separated from the fixed contact 12, the arc energy generated between the contacts is discharged from the baffle 20 along the bent fixed contact 12, the bent fixed contact 12 can provide a longer cooling path for the arc, the wiring port 22 is not easy to extend out of the arc, breakdown damage to electronic products in the control cabinet is avoided, product safety is improved, and in addition, black residues generated by the arc are not easy to directly splash, thereby improving user experience.

In this embodiment, the number of the first accommodating chambers 101 of the base 10 is not specifically limited, and may be one or multiple groups in this embodiment, specifically, referring to fig. 1, 4 and 5, the first accommodating chambers 101 may be three groups, three groups of first accommodating chambers 101 are arranged in parallel, and each group of first accommodating chambers 101 includes two first accommodating chambers that are bilaterally symmetrical (in the direction of fig. 5), and two sides of the base 10 are connected with the baffle 20.

In this embodiment, the bending shape of the stationary contact 12 is not particularly limited, and may be a multi-step shape as one embodiment, and may be a zigzag structure as another embodiment, referring to fig. 5 and 8.

As a preferred embodiment, referring to fig. 3, a barrier strip 28 is disposed between the terminal openings 22 of the barrier 20 for protecting the second end face of the stationary contact 12.

As a preferred embodiment, the bottom of the side wall of the base 10 is provided with a boss 13, and the baffle 20 is located above the boss 13 and abuts against the boss 13.

In this embodiment, the boss 13 is mounted on the bottom of the sidewall of the base 10, which can facilitate connection with the baffle 20, and also facilitate connection of the base 10 with other structures.

Based on the above embodiment, in a preferred embodiment, the bottom surface of the baffle 20 is provided with the clamping pin 23, the top surface of the boss 13 is correspondingly provided with the clamping groove 131 adapted to the clamping pin 23, and the clamping pin 23 is clamped into the clamping groove 131; as an alternative embodiment, it is also possible to provide the bottom surface of the baffle 20 with a clamping groove 131, and the top surface of the boss 13 is correspondingly provided with a clamping pin 23 adapted to the clamping groove 131, and the clamping pin 23 is clamped into the clamping groove 131; or the bottom surface of the baffle 20 is simultaneously provided with a clamping pin 23 and a clamping groove 131, the top surface of the boss 13 is correspondingly provided with an adaptive clamping groove 131 and a clamping pin 23, and the clamping pin 23 is clamped into the clamping groove 131.

In this embodiment, the engagement of the clamping groove 131 and the clamping pin 23 facilitates alignment of the baffle 20 with the base 10.

As a preferred embodiment, the side wall of the base 10 is provided with the same number of evacuation grooves 14 as the first accommodating chambers 101, so as to form evacuation spaces between the base 10 and the baffle 20, and the evacuation spaces are communicated with the extraction holes 11; as an alternative, it is conceivable that the side wall of the baffle 20 is provided with the same number of relief grooves 14 as the first accommodating chambers 101; or the side walls of the base 10 and the baffle 20 are provided with the same number of the relief grooves 14 as the first accommodating chambers 101.

In this embodiment, the stationary contact 12 passes through the avoidance space, and when an arc is generated, the avoidance space between the base 10 and the baffle 20 can disperse arc energy, thereby improving arc extinguishing effect.

In addition to the above embodiment, in a preferred embodiment, the side wall of the baffle 20 is provided with the same number of abutment pins 24 as the first accommodating chambers 101, the abutment ends of the abutment pins 24 face the side wall of the base 10, and the abutment pins 24 are adapted to press the stationary contact 12 against the base 10.

In this embodiment, the fixing of the position of the fixed contact 12 can be simply and conveniently completed by the arrangement of the abutting pin 24, referring to fig. 2 and 5, taking the Z-shaped fixed contact 12 as an example, the first end of the fixed contact 12 stretches into the first accommodating cavity 101 and is attached to the cavity bottom of the first accommodating cavity 101, the second end of the fixed contact 12 stretches into the second accommodating cavity 201 of the baffle 20, and after the baffle 20 is connected with the base 10, the abutting pin 24 of the baffle 20 presses the middle section of the fixed contact 12 to the side wall of the base 10, so as to fix the position of the fixed contact 12.

In the present embodiment, the shape of the contact pins 24 is not particularly limited, and as an embodiment, referring to fig. 2, each set of contact pins 24 is provided in pairs with a gap left between each pair of contact pins 24.

In addition to the above embodiment, in a preferred embodiment, the side wall of the baffle 20 is provided with the heat dissipation holes 25 having the same number as the first accommodating chambers 101, and the heat dissipation holes 25 communicate the avoidance space with the second accommodating chambers 201.

In this embodiment, the lateral wall of baffle 20 has seted up louvre 25, and the louvre 25 intercommunication dodges space and second and holds chamber 201, makes the electric arc through dodging the space after with the energy discharge through a plurality of motion channels, and the electric arc energy is difficult for gathering, has further promoted the arc extinguishing effect.

In this embodiment, the connection manner of the base 10 and the baffle 20 is not specifically limited, and as an embodiment, the base 10 and the baffle 20 may be directly and fixedly connected by a screw, and as another embodiment, referring to fig. 1 and 2, a chute 15 is formed on a side wall of the base 10, a clamping strip 151 is fixed on a side wall of the chute 15, a slider 26 adapted to the chute 15 is correspondingly disposed on a side wall of the baffle 20, the base 10 and the baffle 20 are slidably connected, and the clamping strip 151 is adapted to prevent the slider 26 from falling out of the chute 15.

In this embodiment, the base 10 is slidably connected with the baffle 20, so that the baffle 20 is easy to be assembled and disassembled, and the clamping strips 151 are arranged on two sides of the chute 15, so that the slide block 26 can be prevented from falling out of the chute 15, and the stability of connection is ensured.

As a further improvement of the above embodiment, referring to fig. 1, a clamping strip 151 is provided below the initial section of the chute 15, when the baffle 20 is installed, the fixed contact 12 is first installed on the base 10, the second end of the fixed contact 12 extends into the introduction hole 21 of the baffle 20, and the slider 26 provided on the sidewall of the baffle 20 is horizontally inserted into the initial section of the chute 15 and then slides along the extending direction of the chute 15, thus completing the sliding installation.

The present embodiment also provides a contactor, including:

the arc extinguishing structure;

the cover plate 30 is fixedly connected with the base 10 of the arc extinguishing structure and is abutted against the baffle 20 of the arc extinguishing structure, through holes 31 with the same number as that of the first accommodating cavities 101 of the arc extinguishing structure are formed in the top of the cover plate 30, the through holes 31 are communicated with the second accommodating cavities 201 of the arc extinguishing structure, and specifically, the cover plate 30 is connected with the base 10 through fixing screws 32.

As a preferred embodiment, referring to fig. 5 and 6, the arc extinguishing member 16 is embedded in the first accommodating cavity 101, the bottom of the cover plate 30 is provided with a supporting seat 33, the bottom end of the supporting seat 33 is abutted with the top end of the arc extinguishing member 16, the bottom end of the supporting seat 33 is extended with a supporting table 331, and the supporting seat 33 is in conformal fit with the top end and the inner wall of the arc extinguishing member 16.

In the present embodiment, the bottom end of the abutment seat 33 abuts against the top end of the arc extinguishing member 16, the abutment table 331 extends outward from the bottom end of the abutment seat 33, the abutment table 331 abuts against the inner wall of the arc extinguishing member 16, the abutment seat 33 is in conformal fit with the top end and the inner wall of the arc extinguishing member 16, the arc light can be prevented from escaping through the cover plate 30, and the arc light is suitably guided to be discharged out of the base 10 through the extraction hole 11.

As a preferred embodiment, referring to fig. 5 and 6, the contactor includes a ferrule 40, the ferrule 40 is fixedly connected with a plurality of groups of moving contacts 41, the ferrule 40 is inserted into the base 10, a partition 34 is disposed at the bottom of the cover plate 30, and the partition 34 is located between the ferrule 40 and the arc extinguishing member 16.

In the present embodiment, the partition 34 is provided at the bottom of the cover plate 30, and the partition 34 is located between the insert 40 and the arc extinguishing member 16, so that arc light can be prevented from escaping through the cover plate 30, and arc energy is suitably guided to be discharged out of the base 10 through the extraction holes 11.

Referring to fig. 7 and 8, in this embodiment, the contactor further includes a wiring portion, where the wiring portion includes a wiring frame 50, a wiring screw 51, and a presser foot 52, where the wiring frame 50 is a hollow annular frame, the wiring frame 50 is slidably disposed in the first accommodating cavity 101 of the arc extinguishing structure, the second end of the fixed contact 12 of the arc extinguishing structure stretches into the wiring frame 50, a threaded hole adapted to the wiring screw 51 is provided at the top of the wiring frame 50, the wiring screw 51 stretches into the through hole 31 and is in threaded connection with the wiring frame 50, the presser foot 52 is connected to the tail end of the wiring screw 51, and a gap is left between the wiring screw 51 and the through hole 31.

In this embodiment, the wire frame 50 is slidably disposed in the first accommodating cavity 101 of the arc extinguishing structure, the wire screw 51 extends into the through hole 31 and is in threaded connection with the wire frame 50, a gap is left between the wire screw 51 and the through hole 31, so that the arc energy in the second accommodating cavity 201 can be discharged through the through hole 31, and the arc energy is prevented from being concentrated in the product.

As a preferred embodiment, referring to fig. 3, a transition rib 27 is provided in the second receiving cavity 201, and the transition rib 27 includes a transition slope adapted to guide the wire frame 50 to slide into the second receiving cavity 201.

Based on the above specific embodiments, the working principle of the contactor of this embodiment is:

when the moving contact 41 is separated from the fixed contact 12, an arc is generated in the first accommodating cavity 101 of the base 10, part of energy of the arc is discharged out of the contactor along the surface of the bent fixed contact 12, and part of energy is discharged out of the contactor through the heat dissipation holes 25, so that the energy of the arc is rapidly dispersed in the moving process (the moving direction is shown as A in FIG. 5), the electronic product in the control cabinet cannot be broken down and damaged, the product has higher safety, and in addition, black residues generated by the arc are not easy to splash out directly, and the user experience is improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. An arc extinguishing structure, characterized by comprising:

the base (10) is internally provided with a plurality of groups of first accommodating cavities (101), the first accommodating cavities (101) are suitable for accommodating moving contacts (41) and fixed contacts (12), and a plurality of groups of leading-out holes (11) communicated with the first accommodating cavities (101) are correspondingly formed in the side wall of the base (10);

the fixed contact (12) is a bending piece, a first end of the fixed contact (12) is arranged in the first accommodating cavity (101), and a second end of the fixed contact (12) extends outwards from the leading-out hole (11);

baffle (20), with base (10) are connected, and inside is provided with a plurality of groups of second and holds chamber (201), baffle (20) orientation the lateral wall of base (10) is offered a plurality of groups of introduction holes (21) that communicate second and hold chamber (201) correspondingly, the second end of stationary contact (12) stretches into in introduction hole (21), a plurality of groups of wiring mouth (22) that hold chamber (201) intercommunication with the second have been offered to the correspondence on baffle (20).

2. The arc extinguishing structure according to claim 1, characterized in that the bottom of the side wall of the base (10) is provided with a boss (13), and the baffle (20) is located above the boss (13) and abuts against the boss (13).

3. The arc extinguishing structure according to claim 2, characterized in that the bottom surface of the baffle (20) is provided with a clamping pin (23) and/or a clamping groove (131), the top surface of the boss (13) is correspondingly provided with a clamping groove (131) and/or a clamping pin (23) which are matched with the clamping pin (23), and the clamping pin (23) is clamped into the clamping groove (131).

4. The arc extinguishing structure according to claim 1, characterized in that the side wall of the base (10) and/or the baffle (20) is provided with a plurality of relief grooves (14) which are the same as the first accommodating chambers (101) in number, so as to form a relief space between the base (10) and the baffle (20), and the relief space is communicated with the extraction hole (11).

5. The arc extinguishing structure according to claim 4, characterized in that the side walls of the baffle plate (20) are provided with the same number of abutment feet (24) as the first accommodation cavities (101), the abutment ends of the abutment feet (24) face the side walls of the base (10), and the abutment feet (24) are suitable for pressing the static contact (12) against the base (10).

6. The arc extinguishing structure according to claim 4, wherein the side wall of the baffle plate (20) is provided with heat dissipation holes (25) with the same number as the first accommodating cavities (101), and the heat dissipation holes (25) are communicated with the avoidance space and the second accommodating cavities (201).

7. The arc extinguishing structure according to any one of claims 1-6, characterized in that a chute (15) is provided on a side wall of the base (10), a clamping strip (151) is fixed on a side wall of the chute (15), a sliding block (26) adapted to the chute (15) is correspondingly provided on a side wall of the baffle (20), the base (10) is slidably connected with the baffle (20), and the clamping strip (151) is adapted to prevent the sliding block (26) from falling out of the chute (15).

8. A contactor, comprising:

the arc extinguishing structure according to any one of claims 1-7;

the cover plate (30) is fixedly connected with the base (10) of the arc extinguishing structure and is abutted to the baffle (20) of the arc extinguishing structure, through holes (31) with the same number of groups of first accommodating cavities (101) of the arc extinguishing structure are formed in the top of the cover plate (30), and the through holes (31) are communicated with the second accommodating cavities (201) of the arc extinguishing structure.

9. The contactor according to claim 8, characterized in that said first housing chamber (101) is provided internally with an arc extinguishing member (16);

the bottom of the cover plate (30) is provided with a supporting seat (33), the bottom end of the supporting seat (33) is in supporting connection with the top end of the arc extinguishing piece (16), the bottom end of the supporting seat (33) is externally extended with a supporting table (331), and the supporting seat (33) is in conformal fit with the top end and the inner wall of the arc extinguishing piece (16);

and/or the contactor comprises an inserting core (40), the inserting core (40) is fixedly connected with a plurality of groups of moving contacts (41), the inserting core (40) is inserted into the base (10), a partition plate (34) is arranged at the bottom of the cover plate (30), and the partition plate (34) is positioned between the inserting core (40) and the arc extinguishing piece (16).

10. The contactor according to claim 8, further comprising a wire connection portion, wherein the wire connection portion comprises a wire connection frame (50), a wire connection screw (51) and a presser foot (52), the wire connection frame (50) is a hollow annular frame, the wire connection frame (50) is slidably arranged in a first accommodating cavity (101) of the arc extinguishing structure, a second end of a fixed contact (12) of the arc extinguishing structure extends into the wire connection frame (50), a threaded hole adapted to the wire connection screw (51) is formed in the top of the wire connection frame (50), the wire connection screw (51) extends into the through hole (31) and is in threaded connection with the wire connection frame (50), the presser foot (52) is connected to the tail end of the wire connection screw (51), and a gap is reserved between the wire connection screw (51) and the through hole (31).

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