CN218782976U - A contactor - Google Patents

Abstract

The contactor that this embodiment provided, including contactor body and the intelligent object of setting in contactor body, contactor body includes the base, is formed with at least one accommodation space in the bottom of base along the direction of height in the base, and intelligent object is provided with the fixed orifices, and the fixed orifices is fixed intelligent object in the accommodation space, and intelligent object is used for monitoring the state of major loop. The existing contactor is not utilized at the bottom of the base, space is wasted, the contactor provided by the embodiment of the application is provided with the intelligent module at the bottom of the base, the bottom space of the base is utilized to be the position for placing the intelligent module, and the intelligent module is used for monitoring the state of the main loop to enable the main loop to be adjusted timely. In an embodiment of the present application, the two accommodating spaces can both accommodate the smart module.

Description

Contactor

Technical Field

The application relates to the technical field of contactors, in particular to an intelligent module placing structure of a contactor.

Background

The contactor is an automatic switcher used for connecting or disconnecting the circuit, the main control object is an electric motor, and the contactor is also used for electric power, power distribution and power utilization occasions such as an electric heater, an electric welding machine and lighting equipment. The contactor has the advantages of rapid action, large control capacity, safe and convenient use, frequent operation, remote operation and the like, and is one of important elements in an automatic control system. The contactor is composed of electromagnetic system (movable iron core, static iron core, electromagnetic coil), insulating casing accessory, contact system and arc-extinguishing device. When the electromagnetic coil of the contactor is electrified, a strong magnetic field is generated, so that the static iron core generates electromagnetic attraction to attract the movable iron core and drive the contact to act, and the contact is closed; when the coil is powered off, the electromagnetic attraction disappears, the movable iron core is released under the action of the counterforce spring, the contact is restored, the contact is disconnected, and therefore the power supply is cut off.

With the development of power electronic technology, more and more products are required to be simplified, lightened and integrated to reduce the used space, improve the space utilization efficiency and realize multiple functions. For the contactor, the utilization ratio of the inner space is also very important, and the contactor in the market at present is not provided with a device at the bottom of the base, so that the space is very wasted.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a contactor, placed the intelligent object who is used for monitoring the major loop state in the bottom of the base of contactor, make full use of the space of base.

The scheme for solving the technical problems is as follows: the application provides a contactor, including contactor body and the intelligent object of setting in contactor body, the contactor body includes the base, is formed with at least one accommodation space in the base bottom along base direction of height, is provided with a plurality of fixed orificess on the intelligent object, and a plurality of fixed orificess fix the intelligent object in the accommodation space, and the intelligent object is used for monitoring the state of major loop.

Optionally, the intelligent module includes the fixed plate and installs signal conversion board and a plurality of mutual-inductor on the fixed plate, and the fixed plate has two installation faces of carrying on the back mutually to install signal conversion board and mutual-inductor respectively, the one side of installing the signal conversion board on the intelligent module is towards the opening of accommodation space.

Optionally, a fastener is arranged on one surface of the fixed plate, on which the signal conversion plate is mounted, and the signal conversion plate is fastened on the fixed plate through the fastener; one side of the fixed plate for mounting the mutual inductor is provided with a plurality of fixed plate stand columns, mounting grooves matched with the size of the mutual inductor are formed in the fixed plate stand columns, and the mutual inductor is fixed on the fixed plate through the mounting grooves.

Optionally, a plurality of lugs protrude from the accommodating space, a plurality of holes matched with the lugs are formed in the fixing plate, and the intelligent module is positioned in the horizontal direction through the holes.

Optionally, a buffering insulator is disposed between the signal conversion board and the accommodating space, and the buffering insulator extends toward the transformer to abut against the accommodating space.

Optionally, the buffering insulating part is a plurality of screw insulating caps, the screw insulating caps are connected through a connecting rod, a through hole is formed in the position, corresponding to the screw insulating cap, of the base, a cavity is formed in the screw insulating cap, and the screw penetrates through the screw insulating cap and the through hole in sequence, so that the head of the screw is placed in the cavity.

Optionally, a signal line fabrication hole is formed in the base, penetrates through the height direction of the base, and is used for arranging a signal line of the intelligent module.

Optionally, the signal line process hole is located on one side of the base, which is far away from the arc extinguishing system of the contactor, so that interference of the arc extinguishing system on the signal line is avoided.

Optionally, a bottom cover plate is arranged on the base and used for covering the opening of the accommodating space.

Optionally, the position that corresponds a plurality of fixed orificess on the end cover plate stretches out and has a plurality of second stands, a plurality of second stands and a plurality of fixed orificess cooperation to support intelligent object in the accommodation space along the direction of height.

The application provides a contactor, wherein set up intelligent object, intelligent object is used for monitoring the major loop state, and intelligent object sets up in the accommodation space of following base direction of height in the base bottom, with the intelligent object integration of contactor in the bottom of base, does not occupy other spaces, space utilization promotes. The base is also provided with a plurality of signal wire fabrication holes for routing the intelligent module; a buffering insulating part is arranged between the signal conversion plate and the accommodating space so as to reduce the impact force applied to the intelligent module; the opening of the accommodating space is provided with a bottom cover plate, and the bottom cover plate is used for shielding the opening of the accommodating space and offsetting the intelligent module, so that the intelligent module is more firmly installed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of a base structure of a contactor provided in the present embodiment;

fig. 2 is a schematic bottom structure diagram of the base provided in this embodiment;

FIG. 3 is a schematic structural view of the base provided in this embodiment with a bottom cover plate removed;

fig. 4 is a schematic structural diagram illustrating a positional relationship between a surface of the intelligent module provided with the signal conversion board and the buffering insulating member;

fig. 5 is a schematic structural diagram illustrating a positional relationship between a surface of the intelligent module provided with the transformer and the buffer insulating member;

fig. 6 is a schematic structural view of a side of the fixed plate provided with the instrument transformer mounted thereon;

fig. 7 is a schematic structural view of a side of the fixing plate provided in the present embodiment, on which the signal conversion plate is mounted;

fig. 8 is a schematic structural view of the smart module removal signal conversion board provided in this embodiment, which is mounted on the bottom surface of the base;

fig. 9 is a schematic structural view of the accommodating space and the buffering insulator provided in this embodiment;

fig. 10 is a schematic structural view of a side of the bottom cover plate facing the accommodating space according to this embodiment.

Icon: 100-a base; 110-a containing space; 111-a limiting block; 112-a boss with holes; 113-a bump; 120-a first column; 121-post holes; 130-signal line fabrication holes; 200-an intelligent module; 201-fixing holes; 210-a signal conversion board; 211-circular holes; 212-snap groove; 220-a fixing plate; 221-cylinder; 222-a buckle; 223-fixing the plate column; 224-mounting holes; 225-holes; 230-a transformer; 231-transformer holes; 300-bottom cover plate; 310-a second upright; 311-first section; 312-a second segment; 320-cover plate holes; 400-buffer insulation.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly and include, for example, fixed and removable connections as well as integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

For the contactor, space utilization is very important, and in the contactor on the market at present, the base space of contactor has not obtained make full use of, has caused the waste, and on the other hand, the major loop of contactor is a very crucial component, and its state is also very important, and common contactor does not have the device of monitoring the major loop state at present, and the device of dress on the major loop can not obtain accurate monitoring, can not discover the trouble in time, makes the user can not in time adjust the contactor.

In order to solve the above problem, an embodiment of the present application provides a contactor, an intelligent module 200 is disposed in a base 100 of the contactor, the intelligent module 200 includes a fixing plate 220, and a signal conversion plate 210 and a transformer 230 disposed on the fixing plate 220, the intelligent module 200 is configured to detect a main loop state of the contactor, the intelligent module 200 is disposed in an accommodating space 110 at a bottom of the base 100, an arc extinguishing device of the contactor is not affected, in order to achieve a function of detecting the main loop state of the intelligent module 200, the base 100 is further provided with a signal line wiring slot, the wiring slot is a through hole, the accommodating space 110 and the main loop on the base 100 are communicated, and the accommodating space 110 is further provided with a buffering insulator 400, which simultaneously achieves a function of buffering and protecting a screw head of a screw of a fixed stationary contact plate of the base 100.

Specifically, please refer to fig. 1: the contactor that this embodiment provided, including contactor body and the intelligent module 200 of setting in the contactor body, the contactor body includes base 100, be formed with at least one accommodation space 110 in the base 100 bottom along base 100 direction of height, be provided with a plurality of fixed orificess 201 on the intelligent module 200, a plurality of fixed orificess 201 fix the intelligent module in accommodation space 110, intelligent module 200 is used for monitoring the state of the major loop of contactor, fig. 1 shows the base 100 that provides for this application embodiment, in the description of this application, it is vertical direction to set for the direction of height along base 100.

A contactor is a device capable of rapidly cutting off main circuits of ac and dc and frequently turning on and off a large current control (up to 800A) circuit, is often used in a motor as a control object, and is also used for controlling electric loads such as factory equipment, electric heaters, mother machines, and various electric power units, and not only can turn on and off a circuit, but also has a low voltage discharge protection function. The contactor has large control capacity, is suitable for frequent operation and remote control, and is one of important elements in an automatic control system. The contactor comprises a contactor structure which comprises an electromagnetic system, a contact system, an arc extinguishing system, an insulating shell and accessories. The existing contactor does not have the fully utilized space at the bottom of the base, the intelligent module 200 is arranged at the bottom of the base 100, the intelligent module 200 is used for monitoring the state of the main loop, the main loop is adjusted timely, the space at the bottom of the base 100 is fully utilized, and waste is avoided.

As shown in fig. 2, the base 100 is formed with an accommodating space 110 along the bottom of the base 100 in the height direction, the smart module 200 is disposed in the accommodating space 110, fig. 3 is a schematic view of the base 100 without a bottom cover plate 300, the bottom cover plate 300 is matched with the accommodating space 110 in size, and is provided with a structure for abutting the smart module 200 in the accommodating space 110, and the bottom cover plate 300 is mounted on the base 100 by a fastening structure.

In an embodiment of the present application, the accommodating space 110 is provided at the bottom of the base 100 with a left space and a right space, both of which can accommodate the smart module 200, and in fig. 3, the smart module 200 is relatively disposed at the right side.

For example, as shown in fig. 4 (fig. 4 shows a side on which the signal conversion plate 210 is disposed), the smart module 200 includes a fixing plate 220, and the signal conversion plate 210 and a plurality of transformers 230 mounted on the fixing plate 220, the fixing plate 220 has two mounting surfaces opposite to each other to mount the signal conversion plate 210 and the transformers 230, respectively, and the side of the smart module 200 on which the signal conversion plate 210 is mounted faces the opening of the accommodating space 110. The intelligent module 200 is a device that implements signal collection, transmission, and processing for the main loop.

Specifically, a buckle 222 is arranged on one surface of the fixing plate 220, on which the signal conversion plate 210 is mounted, the buckle 222 is arranged to protrude from the surface of the fixing plate, a buckle groove 212 is arranged at a position of the signal conversion plate 210 corresponding to the buckle 222, and the signal conversion plate 210 is clamped on the fixing plate 220 through the buckle 222; the fixing plate 220 is provided with a plurality of fixing plate columns 223 on one side thereof where the transformer 230 is installed, as shown in fig. 6, the fixing plate columns 223 are provided with mounting grooves matched with the size of the transformer 230, and the transformer 230 is positioned and fixed on the fixing plate 220 through the mounting grooves. Fig. 6 and 7 are schematic views showing two faces of the fixing plate 220. The two buckles 222 are symmetrically arranged on the shorter side of the fixing plate 220 to clamp the signal conversion plate 210 on the fixing plate 220, two cylinders 221 perpendicular to the fixing plate 220 are further arranged near the two short sides of the fixing plate 220, and the two cylinders 221 are matched with the round hole 211 on the signal adapter plate to position the connection between the signal conversion plate 210 and the fixing plate 220.

The fixing plate 220 is provided at the side where the signal conversion plate 210 is mounted, with a protruding rib protruding perpendicularly to the fixing plate 220 at the edge thereof, to space the signal conversion plate 210 and the fixing plate 220 at a distance, thereby increasing the strength of the fixing plate.

Fig. 5 shows a side of the smart module 200 where the transformer 230 is installed, in an embodiment of the present application, there are three transformers 230, which are placed on a fixing plate pillar 223 protruding from the fixing plate 220, the fixing plate pillar 223 has a groove matching the size of the transformer 230, an installation portion protruding from the bottom of the groove is further disposed at the center of the fixing plate pillar 223, an installation hole 224 is disposed on the installation portion, a transformer hole 231 is disposed at a position corresponding to the installation hole 224 on the transformer 230, the installation hole 224 and the transformer hole 231 are used for connecting a fastener, and the transformer 230 and the fixing plate pillar 223 are fixed. The mutual inductor 230 is arranged in the groove, the height of the groove is higher than the thickness of the mutual inductor 230, the top surface of the fixing plate column 223 is higher than the plane of the mutual inductor, so that the mutual inductor 230 does not directly contact with the inner wall of the accommodating space 110, and the mutual inductor 230 is not pressed to protect the mutual inductor 230. On the other hand, the fixing plate pillar 223 keeps a distance between the fixing plate 220 and the bottom surface of the base 100, so that the smart module 200 can reduce the vibration received, and the fixing plate 220 is not deformed by the fixing plate pillar.

The size of the intelligent module 200 is matched with the size of the accommodating space 110, and the inner wall of the accommodating space 110 limits the intelligent module 200.

As shown in fig. 8, which is a schematic view of the fixing plate 220 being mounted on the base 100, a plurality of protrusions 113 protrude from the accommodating space 110, a plurality of holes 225 matching with the plurality of protrusions 113 are disposed on the fixing plate 220, and when the intelligent module 200 is mounted on the accommodating space 110, the plurality of protrusions 113 are disposed in the plurality of holes 225, so as to position the intelligent module 200 in a horizontal direction. Specifically, the protrusion 113 of the accommodating space 110 is perpendicular to the bottom surface, the cross section of the accommodating space is circular, the corresponding hole 225 is also circular, and two protrusions 113 are specifically arranged along the longer side of the smart module 200.

The two horizontal limiting and positioning manners for the smart module 200 are described above, the smart module 200 is limited by using the inner wall of the accommodating space 110, and the plurality of protrusions 113 and the plurality of holes 225 on the fixing plate 220 are disposed in the accommodating space 110 for limiting.

Perforated bosses 112 are arranged at four corners of the intelligent module 200, the perforated bosses 112 are matched with fixing holes 201 on the intelligent module 200, the fixing holes 201 are matched with the perforated bosses 112 to fix the intelligent module 200 in the accommodating space 110, and the perforated bosses 112 are used for leveling the four corners of the intelligent module 200, so that a distance exists between the fixing plate 220 and the bottom surface of the base 100, and a device for damping can be placed.

As shown in fig. 8, a buffering insulator 400 is disposed between the signal conversion board 210 and the accommodating space 110, and the buffering insulator 400 extends toward the transformer 230 to abut against the base 100. The fixing plate 220 is provided with a space for the buffering insulator 400 to pass through, one end of the buffering insulator 400 contacts the signal conversion plate 210, the other end contacts the inner wall of the accommodating space 110, i.e., the base 100, and the buffering insulator 400 is used for buffering vibration and protecting the smart module 200.

In an embodiment of the present application, the buffering insulating member 400 is a plurality of screw insulating caps, the screw insulating caps are connected to each other through a connecting rod, a through hole is formed in a position on the base 100 corresponding to the screw insulating cap, a cavity is formed in the screw insulating cap, a step that is inwardly narrowed is formed in the cavity, and the step is used for cooperating with a gasket penetrating through a screw of the fixed stationary contact plate to protect a screw head. And the screw for fixing the static contact plate sequentially penetrates through the screw insulating cap and the through hole, so that the screw head of the screw is placed in the cavity. In order to achieve the effects of insulation and buffering, the buffering insulating part 400 adopted in the present application is made of rubber, and may be made of other materials capable of achieving buffering and insulation, which are not described herein again.

In one embodiment of the application, the number of the screw insulating caps is three, and the three screw insulating caps are connected through connecting rods. In order to make the buffering effect better, three screw insulation caps are arranged and connected by using a connecting rod, so that the installation and the positioning are easier, the three screw insulation caps extend along the longer side of the intelligent module 200 and are arranged in the gap of the fixing plate 220 relative to the signal conversion plate 210, and the screw insulation caps respectively abut against the accommodating space 110 and the signal conversion plate 210. As shown in fig. 8, a plurality of limiting blocks 111 for limiting the buffering insulating member 400 are further disposed in the accommodating space, and the cross-sectional areas of the limiting blocks 111 in the vertical direction are trapezoidal and are clamped at the connecting rod between the screw insulating caps to fix the buffering insulating member 400.

In an embodiment of the present application, the base 100 is provided with a signal line hole 130, and the signal line hole 130 penetrates through the height direction of the base 100 and is used for arranging a signal line of the smart module 200.

Fig. 9 shows that in the accommodating space 110, a signal line process hole 130 is provided, and when the intelligent module 200 is used, a signal line needs to be connected with a main control board of a contactor, in an embodiment of the present application, the signal line process hole 130 for routing is provided, so as to facilitate maintenance and installation and maintenance of a signal line (flat cable), the signal line process hole 130 is provided as a hole communicating up and down, two holes are provided near a position where the buffering insulator 400 is provided in the accommodating space 110, and the two holes pass through the base 100 and extend along the height direction of the base 100, and are connected with the main control board provided at the top of the base 100.

As shown in fig. 1, the signal line hole 130 is located at a side of the base away from the arc extinguishing system of the contactor, which is an important component of the contactor and may affect the signal line, thereby avoiding interference with the signal line. The signal line process hole 130 is disposed on the outer side of the base 100 where the arc extinguishing system is disposed, so that the uncontrollable interference of the arc extinguishing system to the signal line is avoided, and the operation and accuracy of the intelligent module 200 are affected.

In an embodiment of the present application, signal line process holes 130 are added to both ends of the base 100 on the premise of ensuring the strength of the whole base 100; the signal line process hole 130 is located on one side of the base 100 far away from the arc extinguishing system of the contactor, so that the interference of the arc extinguishing system to the signal line is avoided; the space requirement of the signal wire for the signal wire fabrication hole 130 can effectively save the consumable materials of the middle cover and the base 100; the wiring design can allow the smart module 200 to be placed in the remaining space of the base 100, thereby increasing the space utilization.

As shown in fig. 10, a bottom cover 300 is disposed on the base 100, and the bottom cover 300 is used for covering the opening of the accommodating space 110.

Specifically, a first upright column 120 protruding from an inner wall of the accommodating space 110 is disposed in the accommodating space 110, and the first upright column 120 is used for mounting the bottom cover plate 300. In this embodiment, the accommodating spaces 110 are symmetrically disposed, the first upright posts 120 are disposed at corners of the accommodating space 110 and on a center line separating the two accommodating spaces 110, and two first upright posts 120 are disposed at the center line along the center line, the above six first upright posts 120 are perpendicular to an inner wall of the accommodating space 110 relative to the bottom cover plate 300, that is, a bottom surface of the accommodating space 110 in the vertical direction, a height of the first upright posts 120 is lower than a height of the accommodating space 110, when the bottom cover plate 300 is mounted on the base 100 to shield the accommodating space 110, a top surface of the first upright posts 120 abuts against the bottom cover plate 300, end surfaces of the first upright posts 120 are provided with upright post holes 121, a position of the bottom cover plate 300 relative to the upright post holes 121 is provided with matched cover plate holes 320, the cover plate holes 320 are through holes, the cover plate holes 320 and the upright post holes 121 cooperate to pass through a fastener, so that the bottom cover plate 300 is mounted on the base 100.

In an embodiment of the present application, the first vertical pillar 120 for connecting with the bottom cover 300 is disposed around the smart module 200, and can also horizontally limit the smart module 200. Specifically, notches are further disposed at four corners of the signal conversion board 210 to match the first upright 120, so that the intelligent module 200 can be installed in the accommodating space 110.

A plurality of second pillars 310 extend from the bottom cover plate 300 at positions corresponding to the plurality of fixing holes 201, and the plurality of second pillars 310 are matched with the plurality of fixing holes 201 to support the intelligent module 200 in the accommodating space 110 along the height direction. The bottom cover plate 300 blocks the opening of the accommodating space 110, and also has a function of supporting the smart module 200 in the accommodating space 110.

The intelligent module 200 is mounted by the fastening member through the fixing hole 201 and the boss 112 with hole of the accommodating space, and the intelligent module 200 is supported in the accommodating space 110 through the second pillar 310 on the bottom cover plate 300. In one embodiment of the present application, the bottom cover plate 300 is provided with the second pillars 310, which are distributed at four corners of the intelligent module 200.

Specifically, the fixing holes 201 are disposed at four corners of the fixing plate 220 and the signal conversion plate 210 and have the same size, the second upright 310 is perpendicular to one side of the bottom cover plate 300 facing the accommodating space 110, the second upright 310 has a first section 311 and a second section 312 connected to each other, the second section 312 is close to the bottom cover plate 300, the first section 311 is matched with the fixing hole 201 in size, and can extend into the fixing hole 201 during installation, the cross section of the cylinder of the first section 311 is cross-shaped, the cylinder of the second section 312 is larger than the fixing hole 201 during installation, the first section enters the fixing hole 201, the second section 312 cannot enter the fixing hole 201, so that the second section 312 abuts against the intelligent module 200, the length of the second section 312 is equal to the length of the bottom cover plate 300, the distance between the bottom cover plate 300 and the intelligent module 200, and the second upright 310 of the intelligent module 200 can fix the intelligent module 200 in the vertical direction.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a contactor, its characterized in that is in including contactor body and setting intelligent module (200) in the contactor body, the contactor body includes base (100), follows the direction of height of base (100) is in the bottom of base (100) is formed with at least one accommodation space (110), be provided with a plurality of fixed orificess (201) on intelligent module (200), it is a plurality of fixed orificess (201) will intelligent module (200) are fixed in accommodation space (110), intelligent module (200) are used for monitoring the state of major loop.

2. The contactor according to claim 1, wherein the smart module (200) comprises a fixing plate (220) and a signal conversion plate (210) and a plurality of transformers (230) mounted on the fixing plate (220), the fixing plate (220) has two mounting surfaces opposite to each other for mounting the signal conversion plate (210) and the transformers (230), respectively, and the side of the smart module (200) on which the signal conversion plate (210) is mounted faces the opening of the accommodating space (110).

3. The contactor according to claim 2, wherein a surface of the fixing plate (220) on which the signal conversion plate (210) is mounted is provided with a buckle (222), and the signal conversion plate (210) is clamped on the fixing plate through the buckle (222);

the one side of fixed plate (220) installation mutual-inductor (230) is provided with a plurality of fixed plate stand (223), be provided with on fixed plate stand (223) with the mounting groove that mutual-inductor (230) size matches, mutual-inductor (230) pass through the mounting groove is fixed on fixed plate (220).

4. The contactor according to claim 2, wherein a plurality of protrusions (113) protrude from the receiving space (110), a plurality of holes (225) matching the plurality of protrusions (113) are disposed on the fixing plate (220), and the smart module (200) is horizontally positioned through the plurality of holes (225).

5. The contactor according to claim 2, wherein a buffering insulator (400) is disposed between the signal conversion plate (210) and the accommodating space (110), and the buffering insulator (400) extends towards the transformer (230) to abut against the accommodating space (110).

6. The contactor according to claim 5, wherein the buffer insulator (400) is a plurality of screw insulating caps connected by a connecting rod, a through hole is provided on the base (100) corresponding to the screw insulating caps, a cavity is formed on the screw insulating caps, and a screw passes through the screw insulating caps and the through hole in sequence, so that a head of the screw is placed in the cavity.

7. The contactor according to claim 1, wherein the base (100) is provided with a signal line hole (130), and the signal line hole (130) penetrates through the height direction of the base (100) and is used for arranging a signal line of the intelligent module (200).

8. The contactor according to claim 7, wherein the signal line process hole (130) is located in the base (100) on a side away from an arc extinguishing system of the contactor to avoid interference of the arc extinguishing system with the signal line.

9. Contactor according to claim 2, characterized in that a bottom cover plate (300) is provided on said base (100), said bottom cover plate (300) being adapted to cover said opening of said housing space (110).

10. The contactor according to claim 9, wherein a plurality of second posts (310) are extended from the bottom cover plate (300) at positions corresponding to the plurality of fixing holes (201), and the plurality of second posts (310) are matched with the plurality of fixing holes (201) to support the smart module (200) in the accommodating space (110) along the height direction.

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