Insulation structure of alternating current contactor and alternating current contactor

Abstract

The utility model discloses an insulation structure of an alternating current contactor and the alternating current contactor, and particularly relates to the technical field of electric power accessories. A first clamping position of a mutual inductor shell is clamped with a first mounting position arranged on an insulating base so as to form a plurality of mutually independent first insulating cavities between the mutual inductor shell and the insulating base, and meanwhile, a second clamping position of the mutual inductor shell is clamped with a second mounting position arranged on the insulating shell; a plurality of second insulation cavities which are independently arranged are formed between the mutual inductor shell and the insulation base, the function of insulation between any two adjacent insulation cavities is achieved through joint cooperation of the first insulation cavities and the second insulation cavities which are independently arranged and the mutual inductor shell, and the phenomenon of creepage or electric leakage is avoided. And safe use of the AC contactor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of power accessories, in particular to an insulation structure of an AC contactor and an AC contactor. Background Art

[0002] An AC contactor is an automatic switching device that connects or disconnects the main circuit of a motor or load. It uses electromagnetic force to close or disconnect the switch. It is suitable for frequent operation and remote control of high-voltage circuits, and has low-voltage release protection performance.

[0003] AC contactors usually use three arc extinguishing methods: double-break electric arc extinguishing, longitudinal arc extinguishing and grid arc extinguishing. They are used to eliminate the arc generated by the moving and static contacts during the opening and closing process. Contactors with a capacity of more than 10A have arc extinguishing devices. AC contactors also have auxiliary components such as reaction springs, buffer springs, contact pressure springs, transmission mechanisms, bases and terminals.

[0004] The AC contactor in the prior art is usually not convenient to be installed on the integrated circuit device due to its large structure and volume. Although reducing the volume of the AC contactor can meet the requirements of installation on the integrated circuit device, it has poor insulation effect and hidden dangers such as creepage and leakage in actual application. Utility Model Content

[0005] The main purpose of the utility model is to propose an insulation structure of an AC contactor and an AC contactor, aiming to solve the problem that the AC contactor in the prior art is usually inconvenient to be installed on an integrated circuit device due to its large structure and volume. Although reducing the volume of the AC contactor can meet the requirements of installation on an integrated circuit device, it has poor insulation effect and technical problems of creepage and leakage in actual application.

[0006] In order to achieve the above object, the utility model proposes an insulation structure of an AC contactor, the insulation structure comprising:

[0007] an insulating base, wherein a first mounting position is formed on the insulating base;

[0008] an insulating shell, the insulating shell being able to cover the insulating base to form an installation space with the insulating enclosure, the first installation position being located in the installation space, and a second installation position corresponding to the first installation position being formed on one side of the insulating shell facing the installation space; and

[0009] A transformer housing, the transformer housing can be placed in the installation space, and the two ends of the transformer housing are respectively a first snap-in position and a second snap-in position, the first snap-in position is snap-in with the first installation position to isolate a plurality of first insulating cavities independently arranged between the transformer housing and the insulating substrate, and the second snap-in position is snap-in with the second installation position to isolate a plurality of second insulating cavities independently arranged between the transformer housing and the insulating housing, the number of the first insulating cavities is consistent with that of the second insulating cavities and corresponds one to one, and insulating holes are formed on the transformer housing, which are consistent with the number of the first insulating cavities and connect the first insulating cavities with the second insulating cavities one to one, and a conductor rod is installed in each of the insulating holes.

[0010] In one embodiment, a plurality of first insulating ribs are provided at the first installation position, and the plurality of first insulating ribs are cross-arranged at the first installation position. The first engaging position is formed with first card slots that are the same in number as the first insulating ribs and are arranged one-to-one, and all of the first card slots are engaged with the corresponding first insulating ribs to isolate the installation space into a plurality of first insulating cavities that are independently arranged.

[0011] In one embodiment, the first installation position is further provided with a second insulating rib plate cross-arranged with the first insulating rib plate, the second insulating rib plate is arranged in the first insulating cavity, and one end of the second insulating rib plate away from the insulating base abuts against the transformer housing.

[0012] In one embodiment, the area of ​​the transformer housing located at the first engaging position extends into the first insulating cavity in a direction away from the transformer housing to form a first insulating protrusion, and the first engaging groove is formed on the first insulating protrusion.

[0013] In one embodiment, a first isolation cover is further provided at the first installation position, and the first isolation cover is connected to all the first insulating ribs to cooperate with the first insulating ribs to isolate a plurality of the first insulating cavities at the first installation position.

[0014] In one embodiment, a plurality of third insulating ribs are provided at the second installation position, and the plurality of third insulating ribs are cross-arranged at the second installation position. The second engaging position is formed with second card slots that are the same in number as the third insulating ribs and are arranged one-to-one, and all of the second card slots are engaged with the corresponding third insulating ribs to isolate the installation space into a plurality of second insulating cavities that are independently arranged.

[0015] In one embodiment, a fourth insulating rib plate cross-arranged with the third insulating rib plate is further provided at the second installation position, the third insulating rib plate is provided in the second insulating cavity, and one end of the fourth insulating rib plate away from the insulating housing abuts against the transformer housing.

[0016] In one embodiment, the area of ​​the transformer housing located at the second engaging position extends into the second insulating cavity in a direction away from the transformer housing to form a second insulating protrusion, the second slot is formed on the second insulating protrusion, and the second slot passes through the transformer housing and is connected to the corresponding first slot.

[0017] In one embodiment, a second isolation cover is further provided at the second installation position, and the second isolation cover is connected to all the third insulating ribs to cooperate with the third insulating ribs to isolate a plurality of the second insulating cavities at the second installation position.

[0018] Based on the same technical concept, in a second aspect, the utility model provides an AC contactor, which applies the insulation structure of the AC contactor described in the first aspect.

[0019] The technical solution of the utility model is to provide an insulating base, an insulating shell and a transformer shell. When in use, the first engaging position of the transformer shell is engaged with the first installation position arranged on the insulating base to form a plurality of first insulating cavities independently arranged between the transformer shell and the insulating base. At the same time, the second engaging position of the transformer shell is engaged with the second installation position arranged on the insulating shell to form a plurality of second insulating cavities independently arranged between the transformer shell and the insulating base, and the first insulating cavities are connected with the second insulating cavities through the insulating holes that are arranged in the same number and one-to-one correspondence. Therefore, when in use, the utility model can realize the function of insulating any two adjacent insulating cavities through the cooperation of the independently arranged first insulating cavity and the second insulating cavity and the transformer shell, and further, the conductor rods inserted in the insulating holes will not have creepage or leakage when they are powered on, thereby ensuring the safe use of the AC contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1A schematic diagram of the exploded structure of the insulation structure of the AC contactor provided by the utility model;

[0022] Figure 2 A schematic diagram of the planar structure of the insulation structure of the AC contactor provided by the utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure of the AA section of the example;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of the insulating substrate exemplified in FIG.

[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the transformer housing of the example;

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of the insulating housing of the example.

[0027] Description of Figure Numbers:

[0028] 100, insulating base; 110, first installation position; 120, first insulating rib plate; 130, second insulating rib plate; 140, first isolation cover; 150, first groove;

[0029] 200, insulating housing; 210, installation space; 220, second installation position; 230, third insulating rib plate; 240, fourth insulating rib plate; 250, second isolation cover; 260, second groove; 400, conductive sheet;

[0030] 300, transformer housing; 310, first snap-fit ​​position; 320, second snap-fit ​​position; 330, first insulating cavity; 340, second insulating cavity; 350, insulating hole; 360, conductor rod; 370, first slot; 380, first insulating protrusion; 390, second slot; 391, second insulating protrusion.

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] See also Figures 1 to 6 In one embodiment of the utility model, the insulation structure of the AC contactor includes an insulation base 100, an insulation shell 200 and a transformer shell 300. A first installation position 110 is formed on the insulation base 100. The insulation shell 200 can cover the insulation base 100 to form an installation space 210 with the insulation enclosure. The first installation position 110 is located in the installation space 210. The insulation shell 200 is formed with a second installation position 220 corresponding to the first installation position 110 on one side of the insulation shell 200 facing the installation space 210. The transformer shell 300 can be placed in the installation space 210, and the two ends of the transformer shell 300 are the first clamping position 310 and the second clamping position, respectively. The transformer housing 300 is provided with a plurality of insulating holes 350, the first engaging position 320 is engaged with the first installation position 110 to isolate a plurality of mutually independently arranged first insulating cavities 330 between the transformer housing 300 and the insulating substrate, and the second engaging position 320 is engaged with the second installation position 220 to isolate a plurality of mutually independently arranged second insulating cavities 340 between the transformer housing 300 and the insulating housing 200, the number of the first insulating cavities 330 and the second insulating cavities 340 are consistent and correspond one to one, and the transformer housing 300 is formed with insulating holes 350, which are consistent with the number of the first insulating cavities 330 and connect the first insulating cavities 330 and the second insulating cavities 340 one to one, and a conductor rod 360 is installed in each insulating hole 350.

[0036] In this embodiment, by providing an insulating base 100, an insulating housing 200 and a transformer housing 300, when in use, a first engaging position 310 of the transformer housing 300 is engaged with a first mounting position 110 provided on the insulating base 100 to form a plurality of first insulating cavities 330 independently provided between the transformer housing 300 and the insulating base 100, and a second engaging position 320 of the transformer housing 300 is engaged with a second mounting position 220 provided on the insulating housing 200 to form a plurality of first insulating cavities 330 independently provided between the transformer housing 300 and the insulating base 100. The second insulating cavity 340 is independently arranged, and the first insulating cavity 330 and the second insulating cavity 340 are connected through the insulating holes 350 that are arranged in the same number and one-to-one correspondence. Therefore, when the utility model is in use, it is possible to achieve the function of insulating any two adjacent insulating cavities through the cooperation of the independently arranged first insulating cavity 330 and the second insulating cavity 340 and the transformer housing 300. Furthermore, when the conductor rod 360 inserted in each insulating hole 350 is powered on, there will be no creepage or leakage, thereby ensuring the safe use of the AC contactor.

[0037] In some specific embodiments, the first installation position 110 is provided with multiple first insulating ribs 120, and the multiple first insulating ribs 120 are cross-arranged at the first installation position 110. The first snap-fit ​​position 310 is formed with first snap-fitting grooves 370 that are the same number as the first insulating ribs 120 and are arranged one-to-one. All first snap-fitting grooves 370 are snap-fitted with the corresponding first insulating ribs 120 to isolate the installation space 210 into multiple first insulating cavities 330 that are independently arranged.

[0038] In this embodiment, by setting a plurality of first insulating ribs 120, the plurality of first insulating ribs 120 are cross-arranged at the first installation position 110, and at the same time, the first engaging position 310 is formed with first card slots 370 that are consistent in number with the first insulating ribs 120 and are arranged one-to-one, so that the first card slots 370 are engaged with the first insulating ribs 120 to form a plurality of first insulating cavities 330, thereby enabling the utility model to realize the function of opening or closing the first insulating cavity 330 by utilizing the cooperation of the set first card slots 370 and the first insulating ribs 120 when in use.

[0039] In some specific embodiments, the first installation position 110 is also provided with a second insulating rib plate 130 cross-set with the first insulating rib plate 120, and the second insulating rib plate 130 is arranged in the first insulating cavity 330, and the end of the second insulating rib plate 130 away from the insulating base 100 abuts against the transformer housing 300.

[0040] In this embodiment, by setting the second insulating rib 130 on the first installation position 110, the end of the second insulating rib 130 away from the insulating base 100 is abutted against the transformer housing 300, thereby enabling the utility model to avoid the defect of relative sliding between the transformer housing 300 and the insulating base 100 when the transformer housing 300 is engaged with the insulating base 100 during use.

[0041] In some specific embodiments, the area of ​​the transformer housing 300 located at the first engaging position 310 extends into the first insulating cavity 330 in a direction away from the transformer housing 300 to form a first insulating protrusion 380 , and the first engaging groove 370 is formed in the first insulating protrusion 380 .

[0042] In this embodiment, a first insulating protrusion 380 is formed on the transformer housing 300 and a first slot 370 is formed on the first insulating protrusion 380 , so that the utility model can utilize the first insulating protrusion 380 to improve the connection stability between the transformer housing 300 and the insulating base 100 when in use.

[0043] In some specific embodiments, a first isolation cover 140 is further provided on the first installation position 110 , and the first isolation cover 140 is connected to all the first insulating ribs 120 to cooperate with the first insulating ribs 120 to isolate a plurality of first insulating cavities 330 at the first installation position 110 .

[0044] In this embodiment, by setting the first isolation cover 140, the utility model can utilize the set first isolation cover 140 to make each first insulating cavity 330 in a closed state when in use, thereby avoiding creepage or leakage between the conductor rod 360 located in each first insulating cavity 330 and other electrical equipment.

[0045] It should be particularly and clearly stated that, in the present embodiment, in order to ensure the electrical conduction effect between the conductor rod 360 and the external power supply or device, first grooves 150 which are the same in number and correspond one to one with the first insulating cavity 330 are also arranged on the first isolation cover 140. When in use, the conductive sheet 400 is used to connect one end of the conductor rod 360 located in the first insulating cavity 330, and the conductive sheet 400 is snapped into the corresponding first groove 150.

[0046] In some specific embodiments, the second installation position 220 is provided with a plurality of third insulating ribs 230, and the plurality of third insulating ribs 230 are cross-arranged at the second installation position 220, and the second snap-in position 320 is formed with second snap-in slots 390 that are the same in number as the third insulating ribs 230 and are arranged one-to-one, and all second snap-in slots 390 are snap-fitted with the corresponding third insulating ribs 230 to isolate the installation space 210 into a plurality of second insulating cavities 340 that are independently arranged.

[0047] In this embodiment, by setting a plurality of third insulating ribs 230, the plurality of third insulating ribs 230 are cross-arranged at the second installation position 220, and at the same time, the second engaging position 320 is formed with second card slots 390 that are the same number as the third insulating ribs 230 and are arranged one-to-one, so that the second card slots 390 are engaged with the third insulating ribs 230 to form a plurality of second insulating cavities 340, thereby enabling the utility model to realize the function of opening or locking the second insulating cavity 340 by utilizing the cooperation of the second card slots 390 and the third insulating ribs 230 when in use.

[0048] In some specific embodiments, the second installation position 220 is also provided with a fourth insulating rib 240 cross-set with the third insulating rib 230, the third insulating rib 230 is arranged in the second insulating cavity 340, and the end of the fourth insulating rib 240 away from the insulating housing 200 abuts against the transformer housing 300.

[0049] In this embodiment, by setting the fourth insulating rib 240 on the second installation position 220, the end of the fourth insulating rib 240 away from the insulating housing 200 is abutted against the transformer housing 300, thereby enabling the utility model to avoid the defect of relative sliding between the transformer housing 300 and the insulating housing 200 when the transformer housing 300 is engaged with the insulating housing 200 during use.

[0050] In some specific embodiments, the area of ​​the transformer housing 300 located at the second locking position 320 extends into the second insulating cavity 340 in a direction away from the transformer housing 300 to form a second insulating protrusion 391, and the second locking groove 390 is formed on the second insulating protrusion 391, and the second locking groove 390 passes through the transformer housing 300 and is connected to the corresponding first locking groove 370.

[0051] In this embodiment, a second insulating protrusion 391 is formed on the transformer housing 300 and a second slot 390 is formed on the second insulating protrusion 391 , so that the utility model can utilize the second insulating protrusion 391 to improve the connection stability between the transformer housing 300 and the insulating housing 200 when in use.

[0052] In some specific embodiments, a second isolation cover 250 is further provided on the second installation position 220 , and the second isolation cover 250 is connected to all the third insulating ribs 230 to cooperate with the third insulating ribs 230 to isolate a plurality of second insulating cavities 340 at the second installation position 220 .

[0053] In this embodiment, by setting the second isolation cover 250, the utility model can utilize the set second isolation cover 250 to make each second insulation cavity 340 in a closed state when in use, thereby avoiding creepage or leakage between the conductor rod 360 located in each second insulation cavity 340 and other electrical equipment.

[0054] It should be particularly and clearly stated that, in the present embodiment, in order to ensure the electrical conduction effect between the conductor rod 360 and the external power supply or device, second grooves 260 which are the same in number and correspond one to one with the second insulating cavities 340 are also arranged on the second isolation cover 250. When in use, the conductive sheet 400 is used to connect one end of the conductor rod 360 located in the second insulating cavity 340, and the conductive sheet 400 is snapped into the corresponding second groove 260.

[0055] Based on the same technical concept, in a second aspect, the utility model provides an AC contactor, which uses the insulation structure of the AC contactor in the first aspect.

[0056] The AC contactor provided in the embodiment of the present application adopts the insulation structure of the AC contactor in the above embodiment, which can solve the problem that the AC contactor is usually inconvenient to be installed on the integrated circuit device due to its large structure and volume when the mutual inductor on the AC contactor is in use. Although reducing the volume of the AC contactor can meet the requirements of being installed on the integrated circuit device, it has poor insulation effect and technical problems such as creepage and leakage in actual application. Compared with the prior art, the beneficial effects of the AC contactor provided in the embodiment of the present application are the same as the beneficial effects of the insulation structure of the AC contactor provided in the above embodiment, and the other technical features of the mutual inductance mechanism are the same as the features disclosed in the above embodiment, which will not be repeated here.

[0057] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An insulation structure of an AC contactor, characterized in that: The insulating structure comprises: an insulating base, wherein a first mounting position is formed on the insulating base; an insulating shell, the insulating shell being able to cover the insulating base to form an installation space with the insulating enclosure, the first installation position being located in the installation space, and a second installation position corresponding to the first installation position being formed on one side of the insulating shell facing the installation space; and A transformer housing, the transformer housing can be placed in the installation space, and the two ends of the transformer housing are respectively a first snap-in position and a second snap-in position, the first snap-in position is snap-in with the first installation position to isolate a plurality of first insulating cavities independently arranged between the transformer housing and the insulating substrate, and the second snap-in position is snap-in with the second installation position to isolate a plurality of second insulating cavities independently arranged between the transformer housing and the insulating housing, the number of the first insulating cavities is consistent with that of the second insulating cavities and corresponds one to one, and insulating holes are formed on the transformer housing, which are consistent with the number of the first insulating cavities and connect the first insulating cavities with the second insulating cavities one to one, and a conductor rod is installed in each of the insulating holes.

2. The insulation structure of the AC contactor according to claim 1, characterized in that: The first installation position is provided with a plurality of first insulating ribs, which are cross-arranged at the first installation position, and the first clamping position is formed with first clamping slots which are the same in number as the first insulating ribs and are arranged one-to-one, and all the first clamping slots are clamped and matched with the corresponding first insulating ribs to isolate the installation space into a plurality of first insulating cavities that are independently arranged.

3. The insulation structure of the AC contactor according to claim 2, characterized in that: The first installation position is also provided with a second insulating rib plate arranged crosswise with the first insulating rib plate, the second insulating rib plate is arranged in the first insulating cavity, and one end of the second insulating rib plate away from the insulating base abuts against the transformer housing.

4. The insulation structure of the AC contactor according to claim 3, characterized in that: The area of ​​the transformer housing located at the first engaging position extends into the first insulating cavity in a direction away from the transformer housing to form a first insulating protrusion, and the first engaging groove is formed on the first insulating protrusion.

5. The insulation structure of the AC contactor according to claim 4, characterized in that: A first isolation cover is also provided at the first installation position. The first isolation cover is connected to all the first insulating ribs to cooperate with the first insulating ribs to isolate a plurality of the first insulating cavities at the first installation position.

6. The insulation structure of the AC contactor according to claim 2, characterized in that: The second installation position is provided with a plurality of third insulating ribs, and the plurality of third insulating ribs are cross-arranged at the second installation position. The second engaging position is formed with second card slots which are the same in number as the third insulating ribs and are arranged one-to-one. All the second card slots are engaged with the corresponding third insulating ribs to isolate the installation space into a plurality of second insulating cavities which are independently arranged.

7. The insulation structure of the AC contactor according to claim 6, characterized in that: The second installation position is further provided with a fourth insulating rib plate arranged crosswise with the third insulating rib plate, the third insulating rib plate is arranged in the second insulating cavity, and one end of the fourth insulating rib plate away from the insulating housing abuts against the transformer housing.

8. The insulation structure of the AC contactor according to claim 7, characterized in that: The area of ​​the transformer housing located at the second engaging position extends into the second insulating cavity in a direction away from the transformer housing to form a second insulating protrusion, and the second slot is formed on the second insulating protrusion, and the second slot passes through the transformer housing and is connected to the corresponding first slot.

9. The insulation structure of the AC contactor according to claim 8, characterized in that: A second isolation cover is also provided at the second installation position. The second isolation cover is connected to all the third insulating ribs to cooperate with the third insulating ribs to isolate a plurality of the second insulating cavities at the second installation position.

10. An AC contactor, characterized in that: An insulation structure of an AC contactor as claimed in any one of claims 1 to 9 is used.

Images