contactor

Abstract

The contactor comprises a shell, a main contact system and an electromagnetic system, the electromagnetic system comprises a coil assembly and a moving iron core, the main contact system comprises a main contact support and a main contact assembly, each group of the main contact assembly comprises at least one main movable contact bridge, two main stationary contacts, two main terminal ends, one side of the main contact support is provided with a mounting cavity, the main movable contact bridge is arranged in the mounting cavity, the other side of the main contact support is provided with a containing space, the coil assembly is arranged in the containing space, the moving iron core is connected with the main contact support and is arranged outside the containing space and away from one side of the main movable contact bridge in the containing space. The contactor has the advantages that the coil assembly and the main contact support occupy the same contactor height space, the moving iron core and the main movable contact bridge are arranged on both sides of the main contact support in the contactor height direction, the electromagnetic system and the main contact support are compactly arranged, the internal space of the contactor occupied by the main contact system and the electromagnetic system is reduced, more groups of auxiliary contacts can be arranged, and more auxiliary functions can be expanded.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a contactor. Background Technology

[0002] Contactors are one of the main low-voltage electrical appliances for controlling motors and power supply circuits. Their primary function is to frequently connect and disconnect motor circuits or power supply circuits. Contactors typically consist of a main contact system and an electromagnetic system. The electromagnetic system drives the main contact system to connect or disconnect the main circuit. To add auxiliary functions, such as status indication and feedback, contactors usually also need an auxiliary contact system. This auxiliary contact system typically includes one or more sets of auxiliary contacts. However, existing contactors have many parts and a complex overall structure. The main contact system and electromagnetic system occupy too much internal space, limiting the number of auxiliary contacts and hindering the development of more auxiliary functions. Utility Model Content

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a contactor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A contactor includes a housing, a main contact system and an electromagnetic system respectively disposed within the housing. The electromagnetic system includes a coil assembly and a moving iron core driven by the coil assembly. The main contact system includes a main contact support and a main contact assembly. Each set of main contact assemblies includes at least one active contact bridge disposed on the main contact support, two main stationary contacts disposed opposite to the two ends of the active contact bridge, and two main terminals electrically connected to the two main stationary contacts. One side of the main contact support has a mounting cavity corresponding to the active contact bridge. The active contact bridge is installed in the mounting cavity and its two ends extend out of the mounting cavity and are disposed opposite to the two main stationary contacts. The other side of the main contact support has a receiving space. The coil assembly of the electromagnetic system is located in the receiving space, and its moving iron core is connected to the main contact support and located outside the receiving space on the side away from the active contact bridge.

[0006] Optionally, the main contact support includes a substrate, a mounting structure with a protrusion on one side of the substrate and having the mounting cavity, and a receiving structure with a protrusion on the other side of the substrate and having the receiving space, wherein the moving iron core is connected to the receiving structure of the main contact support.

[0007] Optionally, the receiving structure includes four connecting posts respectively disposed at the four corners of the substrate, the four connecting posts forming the receiving space, the two ends of the moving iron core are respectively provided with connecting shafts, and the two ends of the moving iron core are respectively connected to two connecting posts supported by the main contact through connecting shafts, the ends of the two connecting posts connected to the same connecting shaft are respectively provided with connecting grooves on opposite sides, and the two ends of the connecting shaft are respectively inserted into the connecting grooves of the corresponding two connecting posts.

[0008] Optionally, the substrate is provided with a reinforcing plate connected to the connecting post.

[0009] Optionally, the housing includes a main cover, the mounting structure supported by the main contact and the main contact assembly are located inside the main cover, the substrate supported by the main contact covers the main cover along the second direction, the two main terminals of the main contact assembly are located on both sides of the active contact bridge in the first direction, one end of the two main stationary contacts in the first direction is respectively connected to the two main terminals, and the other end is respectively arranged opposite to the two ends of the active contact bridge along the second direction, the first direction and the second direction are perpendicular to each other.

[0010] Optionally, multiple sets of main contact components are provided, and the multiple sets of main contact components are arranged at intervals along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; the mounting structure includes multiple mounting parts corresponding to the active contact bridges of the multiple sets of main contact components and arranged at intervals along a third direction, and each mounting part is provided with a mounting cavity; a partition plate is provided between each two adjacent mounting parts in the main cover, such that the partition plate divides the main cover into multiple partition cavities, and a single partition cavity is used to accommodate a set of main contact components and a mounting part.

[0011] Optionally, the partition plate is provided with a first guide groove on one side in the second direction, and the substrate is provided with two first clearance notches located on both sides in the first direction and a first guide part located between the two first clearance notches between each two adjacent mounting parts. The partition plate is inserted into the gap between the two adjacent mounting parts and the first clearance notch of the substrate, and the first guide part of the substrate is slidably inserted into the first guide groove of the partition plate.

[0012] Optionally, each mounting part extends away from the substrate and is provided with an arc-blocking portion. The arc-blocking portion is located between the two main stationary contacts of the main contact assembly in a first direction, and the arc-blocking portion is provided with an arc-blocking groove. Each partition chamber is provided with an arc-blocking plate. The arc-blocking plate is located between the two main stationary contacts of the main contact assembly in a first direction, and the arc-blocking plate extends at least partially into the arc-blocking groove.

[0013] Optionally, a reaction spring is also included. The coil assembly includes a coil frame, a coil, and a stationary iron core. Both the moving iron core and the stationary iron core have an E-shaped structure with three protruding structures. The three protruding structures of the moving iron core and the stationary iron core are respectively arranged opposite to each other, and the middle protruding structure extends into both ends of the coil frame. The coil is located on the outside of the coil frame and between the two protruding structures on the outside of the stationary iron core. The two ends of the coil are electrically connected to two coil terminals respectively. When the coil is energized, the moving iron core moves towards the stationary iron core under the electromagnetic force of the coil. The moving iron core drives the active contact bridge to contact the main stationary contact. The moving iron core also drives the reaction spring to store energy. When the coil is de-energized, the reaction spring releases energy and drives the moving iron core to move away from the stationary iron core. The moving iron core drives the active contact bridge to separate from the main stationary contact.

[0014] Optionally, the main terminal is an elastic clip structure with an opening along the second direction; the main cover has a first wiring hole corresponding to the main terminal at its bottom in the second direction away from the substrate.

[0015] The contactor of this invention features a main contact support with a space for accommodating the coil assembly of the electromagnetic system to avoid interference. The moving iron core is located outside the accommodating space of the main contact support on the side away from the active contact bridge. That is, the coil assembly and the main contact support occupy the same height space of the contactor. The moving iron core and the active contact bridge are located on both sides of the main contact support in the height direction of the contactor, so that the electromagnetic system and the main contact support are compactly arranged, reducing the internal space occupied by the main contact system and the electromagnetic system. This allows for the installation of more sets of auxiliary contacts or other accessories, thereby facilitating the expansion of more auxiliary functions.

[0016] In addition, the housing structure is formed by four connecting posts respectively set at the four corners of the substrate, which not only facilitates the formation of a sufficiently large housing space to accommodate the coil assembly, but also facilitates the connection of the connecting posts to the moving iron core. Attached Figure Description

[0017] Figure 1 This is a perspective view of the contactor of this utility model;

[0018] Figure 2 This is a schematic diagram of the contactor structure of this utility model without the housing;

[0019] Figure 3 This is a cross-sectional view of the contactor of this utility model;

[0020] Figure 4 This is a schematic diagram of the front of the auxiliary base of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the back of the auxiliary base of this utility model;

[0022] Figure 6This is a schematic diagram of the auxiliary contact support structure of this utility model;

[0023] Figure 7 This is a perspective view of the main contact support of this utility model;

[0024] Figure 8 This is a view of the main contact support of this utility model;

[0025] Figure 9 This is another view of the main contact support of this utility model;

[0026] Figure 10 This is a schematic diagram of the structure of the main cover of this utility model.

[0027] Housing 100; Main cover 110; Partition plate 111; Partition cavity 112; First guide groove 113; Arc blocking plate 114; First wiring hole 115; Main base 120; Coil assembly cavity 121; Through hole 122; Auxiliary base 130; First partition plate 131; First receiving cavity 132; Second partition plate 133; Moving iron core cavity 134; Second receiving cavity 135; Second guide groove 136; Second clearance notch 137; Auxiliary cover 140; Second wiring hole 141; Third wiring hole 142; Main contact support 200; Base plate 210; First clearance notch 211; First guide portion 212; Mounting portion 220; Mounting through cavity 221; Connecting post 230; Connecting groove 231; Space 240; Reinforcing plate 250; Arc blocking part 260; Arc blocking groove 261; Main contact assembly 300; Active contact bridge 310; Main stationary contact 320; Main terminal block 330; Main contact spring 340; Coil assembly 400; Coil frame 410; Coil 420; Stationary iron core 430; Connecting piece 440; Coil terminal block 450; Moving iron core 500; Connecting shaft 510; Reaction spring 600; Auxiliary contact support 700; Slot 701; First through cavity 702; Second through cavity 703; Second guide part 704; First auxiliary contact assembly 801; Second auxiliary contact assembly 802; Auxiliary moving contact bridge 810; Auxiliary stationary contact 820; Auxiliary terminal block 830. Detailed Implementation

[0028] The specific embodiments of the contactor of this utility model are further described below with reference to the accompanying drawings. The contactor of this utility model is not limited to the descriptions in the following embodiments.

[0029] like Figure 1-3As shown, the contactor of this embodiment includes a housing 100, a main contact system, an electromagnetic system, and an auxiliary contact system respectively disposed within the housing 100. The main contact system includes a main contact support 200 and main contact assemblies 300. The main contact support 200 is slidably disposed within the housing 100. Each set of main contact assemblies 300 includes at least one active contact bridge 310 disposed on the main contact support 200, two main stationary contacts 320 respectively disposed opposite to both ends of the active contact bridge 310, and two main terminals 330 electrically connected to the two main stationary contacts 320 respectively. The two main terminals 330 of the main contact assembly 300 are located on both sides of the active contact bridge 310 in a first direction. One end of each of the two main stationary contacts 320 in the first direction is connected to the two main terminals 330, and the other end is disposed opposite to both ends of the active contact bridge 310 in a second direction. The auxiliary contact system includes an auxiliary contact support 700 and auxiliary contact groups. The auxiliary contact support 700 is slidably disposed within the housing 100. Each set of auxiliary contact components includes at least one auxiliary moving contact bridge 810 disposed on the auxiliary contact support 700, two auxiliary stationary contacts 820 respectively disposed opposite to both ends of the auxiliary moving contact bridge 810, and two auxiliary terminals 830 respectively electrically connected to the two auxiliary stationary contacts 820. The two auxiliary terminals 830 of the auxiliary contact components are located on both sides of the auxiliary moving contact bridge 810 in a first direction. One end of each of the two auxiliary stationary contacts 820 in the first direction is connected to the two auxiliary terminals 830, and the other end is respectively disposed opposite to both ends of the auxiliary moving contact bridge 810 in a second direction. The auxiliary moving contact bridge 810 and auxiliary stationary contacts 820 of the auxiliary contact components can be configured as normally open contacts or normally closed contacts as required. The first direction, the second direction, and the third direction are perpendicular to each other. The first direction X is the length direction of the contactor, the second direction Y is the height direction of the contactor, and the third direction Z is the width direction of the contactor.

[0030] One improvement of this application is that, Figure 2-3As shown in Figures 7-9, the main contact support 200 of the main contact system has a mounting cavity 221 on one side corresponding to the active contact bridge 310. The active contact bridge 310 of the main contact assembly 300 is installed in the mounting cavity 221 and its two ends extend out of the mounting cavity 221 and are arranged opposite to the two main stationary contacts 320. In particular, the other side of the main contact support 200 has a receiving space 240. The coil assembly 400 of the electromagnetic system is located in the receiving space 240. Its moving iron core 500 is connected to the main contact support 200 and is located outside the receiving space 240 on the side away from the active contact bridge 310. That is, the coil assembly 400 is located between the moving iron core 500 and the active contact bridge 310 of the main contact assembly 300. In this embodiment, the contactor has a main contact support 200 for the main contact system, which provides a space 240 for accommodating the coil assembly 400 of the electromagnetic system. The moving iron core 500 is located outside the space 240 of the main contact support 200, away from the active contact bridge 310. That is, the coil assembly 400 and the main contact support 200 occupy the same height space of the contactor. The moving iron core 500 and the active contact bridge 310 are located on both sides of the main contact support 200 in the height direction of the contactor. This allows the electromagnetic system and the main contact support 200 to be compactly arranged, reducing the internal space occupied by the main contact system and the electromagnetic system. This facilitates the installation of more sets of auxiliary contacts or other accessories, thereby enabling the expansion of more auxiliary functions.

[0031] In this embodiment, each group of main contact components 300 further includes a main contact spring 340. The main contact spring 340 provides contact pressure between the active contact bridge 310 and the main stationary contact 320. The main contact spring 340 is installed in the mounting cavity 221, and its two ends are respectively connected to the active contact bridge 310 and one side wall of the mounting cavity 221.

[0032] Furthermore, the housing 100 includes a main cover 110, a main base 120, an auxiliary base 130, and an auxiliary cover 140 that are sequentially covered along the second direction. Any two adjacent main covers 110, main base 120, auxiliary base 130, and auxiliary cover 140 can be connected by means of snap-fit, screw connection, or riveting. The main stationary contact 320 and main terminal 330 of the main contact assembly 300 are fixed inside the main cover 110. The coil assembly 400 is fixed inside the main base 120. The auxiliary stationary contact 820 and auxiliary terminal 830 of the auxiliary contact assembly 802 are fixed inside the auxiliary base 130. The internal spaces of the main base 120 and the auxiliary base 130 are connected. The moving iron core 500 and the auxiliary contact support 700 are slidably disposed inside the auxiliary base 130. The main contact support 200 is slidably disposed inside the main cover 110, and the main contact support 200 extends at least partially into the main base 120 and the auxiliary base 130 to connect with the moving iron core 500. The housing 100 of this embodiment has a four-layer structure formed by the main cover 110, the main base 120, the auxiliary base 130 and the auxiliary cover 140 arranged in sequence. This facilitates the assembly of the contactor in sections, simplifies installation, reduces assembly difficulty, and promotes automated assembly.

[0033] Furthermore, the main contact support 200 includes a substrate 210, a mounting structure protruding from one side of the substrate 210 and having the mounting cavity 221, and a receiving structure protruding from the other side of the substrate 210 and having the receiving space 240. The moving iron core 500 is connected to the receiving structure of the main contact support 200. The main contact support 200 is formed by the mounting structure and the receiving structure protruding from opposite sides of the substrate 210, and has a simple structure.

[0034] Preferably, the receiving structure includes four connecting posts 230 respectively disposed at the four corners of the substrate 210, forming the receiving space 240. The moving iron core 500 has connecting shafts 510 at both ends, and both ends of the moving iron core 500 are connected to two connecting posts 230 of the main contact support 200 via the connecting shafts 510. The ends of the two connecting posts 230 connected to the same connecting shaft 510 have corresponding connecting grooves 231 on opposite sides, and both ends of the connecting shaft 510 are inserted into the connecting grooves 231 of the corresponding two connecting posts 230. The receiving structure, formed by the four connecting posts 230 respectively disposed at the four corners of the substrate 210, facilitates the formation of a sufficiently large receiving space 240 for accommodating the coil assembly 400, and also facilitates the connection between the connecting posts 230 and the moving iron core 500.

[0035] Furthermore, the base plate 210 of the main contact support 200 is provided with a reinforcing plate 250 connected to the connecting post 230 to improve the structural strength of the main contact support 200.

[0036] Furthermore, the mounting structure of the main contact support 200 and the main contact assembly 300 are located inside the main cover 110 of the housing 100. The base plate 210 of the main contact support 200 covers the main cover 110 along the second direction. The two main terminals 330 of the main contact assembly 300 are located on both sides of the active contact bridge 310 in the first direction. One end of the two main stationary contacts 320 in the first direction is connected to the two main terminals 330 respectively, and the other end is respectively arranged opposite to the two ends of the active contact bridge 310 along the second direction.

[0037] like Figure 2-3 As shown in Figures 7-10, multiple sets of main contact components 300 are provided, and these multiple sets of main contact components 300 are arranged at intervals along a third direction. The mounting structure includes multiple mounting portions 220 corresponding to the active contact bridges 310 of the multiple sets of main contact components 300 and arranged at intervals along a third direction. Each mounting portion 220 is provided with a mounting cavity 221. A partition plate 111 is provided between every two adjacent mounting portions 220 in the main cover 110, so that the partition plate 111 divides the main cover 110 into multiple partition cavities 112. Each partition cavity 112 is used to accommodate one set of main contact components 300 and one mounting portion 220. Each set of main contact components 300 is installed in a relatively independent cavity, improving the electrical isolation effect.

[0038] Furthermore, the partition plate 111 of the main cover 110 is provided with a first guide groove 113 on one side in the second direction. The base plate 210 of the main contact support 200 has two first clearance notches 211 located on both sides of the base plate 210 in the first direction and a first guide portion 212 located between the two first clearance notches 211 between each pair of adjacent mounting portions 220. The partition plate 111 is inserted into the gap between adjacent mounting portions 220 and into the first clearance notches 211 of the base plate 210. The first guide portion 212 of the base plate 210 is slidably inserted into the first guide groove 113 of the partition plate 111. The first guide portion 212 of the main contact support 200 and the first guide groove 113 of the main cover 110 cooperate to provide sliding guidance and installation positioning and limiting functions for the main contact support 200.

[0039] Furthermore, each mounting portion 220 of the main contact support 200 extends away from the substrate 210 and is provided with an arc-blocking portion 260. The arc-blocking portion 260 is located between the two main stationary contacts 320 of the main contact assembly 300 in a first direction, and the arc-blocking portion 260 is provided with an arc-blocking groove 261. Each partition chamber is provided with an arc-blocking plate 114. The arc-blocking plate 114 is located between the two main stationary contacts 320 of the main contact assembly 300 in a first direction, and the arc-blocking plate 114 extends at least partially into the arc-blocking groove 261. When the main contact support 200 drives the active contact bridge 310 and the main stationary contacts 320 to contact, the arc-blocking portion 260 of the main contact support 200 moves towards the arc-blocking plate 114, so that more of the arc-blocking plate 114 extends into the arc-blocking groove 261. The arc-blocking groove 261 on the arc-blocking part 260 of the main contact support 200 and the arc-blocking plate 114 cooperate to completely block the two main stationary contacts 320 located in the same partition cavity 112, so as to further improve the electrical isolation effect.

[0040] Preferably, the main terminal 330 is an elastic clip structure with an opening along the second direction, so as to facilitate quick plugging and unplugging connection between the main terminal 330 and the external conductive sheet. Correspondingly, as... Figure 1 , 10 As shown, the housing 100 has a first wiring hole 115 corresponding to the main terminal 330 on the side of the housing 100 that is closer to the main contact assembly 300 and farther away from the auxiliary contact assembly in the second direction. That is, the main cover 110 of the housing 100 has a first wiring hole 115 corresponding to the main terminal 330 on the bottom of the housing 100 that is farther away from the substrate 210 in the second direction. The external conductive sheet extends into the main cover 110 through the first wiring hole 115 and is plugged into the main terminal 330. The main contact assembly 300 is located on the bottom side of the contactor for easy insertion, and the auxiliary contact assembly is located on the top side of the contactor for easy wiring, signal output, and greater safety.

[0041] In this embodiment, the main stationary contact 320 includes a wiring terminal and a contact terminal as opposite ends of the main stationary contact 320 in a first direction, and a connecting segment perpendicularly connected between the wiring terminal and the contact terminal. The wiring terminal and the contact terminal of the main stationary contact 320 are parallel to the first direction and perpendicular to the second direction, respectively. The opposite end of the opening of the main wiring terminal 330 is located within the angle between the wiring terminal and the connecting segment of the main stationary contact 320, and the outer side of the opposite end of the opening of the main wiring terminal 330 is connected to the wiring terminal of the main stationary contact 320.

[0042] Another improvement of this application is that the electromagnetic system includes a coil assembly 400 fixed within a housing 100 and a moving iron core 500 linearly movable within the housing 100 and driven by the coil assembly 400. The moving iron core 500 is connected to a main contact support 200 and an auxiliary contact support 700, respectively. The main contact assembly 300 is located on one side of the coil assembly 400 in a second direction, and the auxiliary contact assembly is located on the other side of the coil assembly 400 in the second direction. When the coil assembly 40 is energized, the generated electromagnetic force drives the moving iron core 500 to move in the second direction, causing the main contact support 200 and the auxiliary contact support 700 to move in the second direction. The coil assembly 40 remains stationary, the main contact support 200 moves below the coil assembly 40, and the auxiliary contact support 700 moves above the coil assembly 40. When the coil assembly 40 is de-energized, the return spring 600 can drive the moving iron core 500 to reset, and the moving iron core 500 causes the main contact support 200 and the auxiliary contact support 700 to reset.

[0043] In this embodiment, the main contact system and the auxiliary contact system share the same electromagnetic system. The main contact component 300 of the main contact system and the auxiliary contact component of the auxiliary contact system are located on both sides of the coil component 400 of the electromagnetic system in the height direction of the contactor. This simplifies the structure of the contactor, makes the layout compact and reasonable, and facilitates the use of more sets of auxiliary contact components, thereby facilitating the expansion of more auxiliary functions.

[0044] Furthermore, the moving iron core 500 and the auxiliary contact assembly are located on the same side of the coil assembly 400 in the second direction. The auxiliary contact system is provided with multiple sets of auxiliary contact assemblies, including multiple sets of first auxiliary contact assemblies 801 and at least one set of second auxiliary contact assemblies 802. The second auxiliary contact assemblies 802 and the moving iron core 500 are spaced apart along a third direction. The multiple sets of first auxiliary contact assemblies 801 are arranged spaced apart along a third direction. The first auxiliary contact assemblies 801 are located on the side of the moving iron core 500 and the second auxiliary contact assemblies 802 away from the coil assembly 400 in the second direction. By having the moving iron core 500 and the auxiliary contact assembly located on the same side of the coil assembly 400 in the contactor height direction, not only can multiple sets of first auxiliary contact assemblies 801 be arranged on one side of the moving iron core 500 in the contactor height direction, but a second auxiliary contact assembly 802 can also be arranged on the side of the moving iron core 500 in the contactor width direction. That is, the moving iron core 500 and the second auxiliary contact assembly 802 occupy the same contactor height space and jointly occupy the space between the first auxiliary contact assembly 801 and the coil assembly 400, making the layout more compact.

[0045] Specifically, the auxiliary contact system is provided with six sets of auxiliary contact components, namely four sets of first auxiliary contact components 801 and two sets of second auxiliary contact components 802. The two sets of second auxiliary contact components 802 are located on both sides of the moving iron core 500 in a third-dimensional direction. Unlike existing contactors that mainly provide four or two sets of auxiliary contact components, the contactor in this embodiment can provide six sets of auxiliary contact components while maintaining the original size.

[0046] like Figure 2 , 6 As shown, the auxiliary contact support 700 has a slot 701 on one side in the second direction, and the moving iron core 500 is snapped and fixed in the slot 701. The auxiliary contact support 700 has a first cavity 702 and a second cavity 703. The second cavity 703 is located between the slot 701 and the first cavity 702 in the second direction. The auxiliary moving contact bridge 810 of the first auxiliary contact assembly 801 is installed in the first cavity 702 and its two ends extend out of the first cavity 702 in the first direction, which is opposite to the two auxiliary stationary contacts 820 of the first auxiliary contact assembly 801. The auxiliary moving contact bridge 810 of the second auxiliary contact assembly 802 is installed in the second cavity 703 and its two ends extend out of the second cavity 703 in the first direction, which is opposite to the two auxiliary stationary contacts 820 of the second auxiliary contact assembly 802.

[0047] In this embodiment, each auxiliary contact assembly further includes an auxiliary contact spring (not shown in the figure). The auxiliary contact spring provides contact pressure between the auxiliary moving contact bridge 810 and the auxiliary stationary contact 820. The auxiliary contact spring of the first auxiliary contact assembly 801 is installed in the first through cavity 702, and its two ends are respectively connected to the auxiliary moving contact bridge 810 and a side wall of the first through cavity 702. The auxiliary contact spring of the second auxiliary contact assembly 802 is installed in the second through cavity 703, and its two ends are respectively connected to the auxiliary moving contact bridge 810 and a side wall of the second through cavity 703.

[0048] like Figure 4-6 As shown, the auxiliary base 130 of the housing 100 has a first space and a second space connected along a second direction, and the size of the first space in the first direction is smaller than the size of the second space in the first direction. The first space of the auxiliary base 130 is provided with at least one first partition 131, which divides the first space into multiple first receiving cavities 132 for accommodating multiple sets of first auxiliary contact assemblies 801. The second space of the auxiliary base 130 is provided with at least one second partition 133, which divides the second space into a moving iron core cavity 134 for installing the moving iron core 500 and at least one second receiving cavity 135 for accommodating the first auxiliary contact assemblies 801. The moving iron core 500 and each set of auxiliary contact assemblies are respectively installed in relatively independent cavities, improving the electrical isolation effect.

[0049] In this embodiment, the auxiliary terminal 830 is preferably a terminal block with a wiring screw. The auxiliary terminal 830 and the auxiliary stationary contact 820 are integrally connected, but they can also be separate components connected by welding or riveting. The auxiliary cover 140 has second wiring holes 141 on opposite sides in the first direction, corresponding to the auxiliary terminal 830 of the first auxiliary contact assembly 801 and communicating with the first receiving cavity 132. The auxiliary cover 140 also has third wiring holes 142 on opposite sides in the first direction, corresponding to the auxiliary terminal 830 of the second auxiliary contact assembly 802 and communicating with the second receiving cavity 135. Of course, the auxiliary terminal 830 can also be a terminal with other structures such as an elastic clip.

[0050] Furthermore, the first partition 131 of the auxiliary base 130 is provided with a second guide groove 136 on the side near the second space in the second direction. The auxiliary contact support 700 is provided with a second guide portion 704 corresponding to the second guide groove 136, and the second partition 133 is provided with a second clearance notch 137 corresponding to the second guide portion 704. The second guide portion 704 of the auxiliary contact support 700 is slidably inserted into the second guide groove 136 of the first partition 131. The second guide portion 704 of the auxiliary contact support 700 and the second guide groove 136 of the auxiliary base 130 cooperate to provide sliding guidance and installation positioning limit for the auxiliary contact support 700.

[0051] like Figure 2-3 As shown, the coil assembly 400 of this embodiment includes a coil frame 410, a coil 420, and a stationary iron core 430. Both the moving iron core 500 and the stationary iron core 430 have an E-shaped structure with three protruding structures. The three protruding structures of the moving iron core 500 and the stationary iron core 430 are respectively arranged opposite to each other, and the middle protruding structure extends into both ends of the coil frame 410. The coil 420 is disposed outside the coil frame 410 and between the two outer protruding structures of the stationary iron core 430. The two ends of the coil 420 are electrically connected to two coil terminals 450 respectively. When the coil 420 is energized, the moving iron core 500 moves towards the stationary iron core 430 under the electromagnetic force of the coil 420. The moving iron core 500 drives the active contact bridge 310 to contact the main stationary contact 320, and the moving iron core 500 also drives the reaction spring 600 to store energy. When the coil 420 is de-energized, the reaction spring 600 releases energy and drives the moving iron core 500 to move away from the stationary iron core 430. The moving iron core 500 drives the active contact bridge 310 to separate from the main stationary contact 320. Furthermore, in this embodiment, the reaction spring 600 is connected between the coil frame 410 and the auxiliary contact support 700. Of course, the reaction spring 600 can also be connected between the coil frame 410 and the main contact support 200. There can be one or more reaction springs 600.

[0052] In this embodiment, the main base 120 of the housing 100 is provided with a coil assembly cavity 121 that communicates with the moving iron core cavity 134 of the auxiliary base 130 and a through hole 122 corresponding to the connecting post 230 of the main contact support 200. The coil frame 410 and the stationary iron core 430 of the coil assembly 400 are respectively limited and installed in the coil assembly cavity 121. The connecting post 230 of the main contact support 200 passes through the through hole 122 of the main base 120 and the coil assembly cavity 121 in sequence and is connected to the moving iron core 500.

[0053] Preferably, the coil frame 410 is provided with two connecting plates 440. The two ends of the coil 420 are electrically connected to two coil terminals 450 via the two connecting plates 440, respectively. The two ends of the coil 420 are wound around the two connecting plates 440, and the two connecting plates 440 are electrically connected to the two coil terminals 450, respectively. The coil terminals 450 are preferably connecting plates with connecting screws. The connecting plates 440 and the coil terminals 450 are electrically connected by wires, with the two ends of the wires soldered to the connecting plates 440 and the coil terminals 450, respectively. The electrical connection structure between the coil 420 and the coil terminals 450 is simple, saves material on the coil terminals 450, and is easy to process.

[0054] In another embodiment, the coil terminal 450 can also be located at the position of the first auxiliary contact component 801 or the second auxiliary contact component 802 in the figure, that is, the first auxiliary contact component 801 or the second auxiliary contact component 802 is set less or not at all.

[0055] In another embodiment, the contactor may also have fewer or no first auxiliary contact component 801 or second auxiliary contact component 802, and the corresponding space may be used to install surge protection accessories or mechanical interlocking accessories, etc.

[0056] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0057] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A contactor, comprising a housing (100), a main contact system and an electromagnetic system respectively disposed within the housing (100), the electromagnetic system comprising a coil assembly (400) and a moving iron core (500) driven by the coil assembly (400), the main contact system comprising a main contact support (200) and a main contact assembly (300), each main contact assembly (300) comprising at least one active contact bridge (310) disposed on the main contact support (200), two main stationary contacts (320) respectively disposed opposite to both ends of the active contact bridge (310), and two main terminals (330) respectively electrically connected to the two main stationary contacts (320), one side of the main contact support (200) having a mounting cavity (221) corresponding to the active contact bridge (310), the active contact bridge (310) being installed in the mounting cavity (221) and having both ends extending out of the mounting cavity (221) and disposed opposite to the two main stationary contacts (320), characterized in that: The other side of the main contact support (200) is provided with a receiving space (240), and the coil assembly (400) of the electromagnetic system is located in the receiving space (240). Its moving iron core (500) is connected to the main contact support (200) and is located outside the receiving space (240) on the side away from the active contact bridge (310).

2. The contactor according to claim 1, characterized in that: The main contact support (200) includes a base plate (210), a mounting structure with a protrusion on one side of the base plate (210) and having the mounting cavity (221), and a receiving structure with a protrusion on the other side of the base plate (210) and having the receiving space (240). The moving iron core (500) is connected to the receiving structure of the main contact support (200).

3. The contactor according to claim 2, characterized in that: The accommodating structure includes four connecting posts (230) respectively disposed at the four corners of the base plate (210), the four connecting posts (230) forming the accommodating space (240), the two ends of the moving iron core (500) are respectively provided with connecting shafts (510), and the two ends of the moving iron core (500) are respectively connected to the two connecting posts (230) of the main contact support (200) through the connecting shafts (510). The two connecting posts (230) connected to the same connecting shaft (510) are respectively provided with connecting grooves (231) on opposite sides of their ends, and the two ends of the connecting shaft (510) are respectively inserted into the connecting grooves (231) of the corresponding two connecting posts (230).

4. The contactor according to claim 3, characterized in that: The base plate (210) is provided with a reinforcing plate (250) connected to the connecting post (230).

5. The contactor according to claim 2, characterized in that: The housing (100) includes a main cover (110), the mounting structure of the main contact support (200) and the main contact assembly (300) are located inside the main cover (110), the base plate (210) of the main contact support (200) covers the main cover (110) along the second direction, the two main terminals (330) of the main contact assembly (300) are located on both sides of the active contact bridge (310) in the first direction, one end of the two main stationary contacts (320) is connected to the two main terminals (330) respectively in the first direction, and the other end is respectively arranged opposite to the two ends of the active contact bridge (310) along the second direction, the first direction and the second direction are perpendicular to each other.

6. The contactor according to claim 5, characterized in that: The main contact assembly (300) is provided in multiple sets, and the multiple sets of main contact assemblies (300) are arranged at intervals along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other; the mounting structure includes multiple mounting parts (220) corresponding to the active contact bridges (310) of the multiple sets of main contact assemblies (300) and arranged at intervals along a third direction, and each mounting part (220) is provided with a mounting cavity (221); a partition plate (111) is provided between each two adjacent mounting parts (220) in the main cover (110), so that the partition plate (111) divides the main cover (110) into multiple partition cavities (112), and a single partition cavity (112) is used to accommodate a set of main contact assemblies (300) and a mounting part (220).

7. The contactor according to claim 6, characterized in that: The partition plate (111) has a first guide groove (113) on one side in the second direction. The substrate (210) has two first clearance notches (211) located on both sides of the substrate (210) in the first direction and a first guide part (212) located between the two first clearance notches (211) between each two adjacent mounting parts (220). The partition plate (111) is inserted into the gap between the two adjacent mounting parts (220) and the first clearance notch (211) of the substrate (210). The first guide part (212) of the substrate (210) is slidably inserted into the first guide groove (113) of the partition plate (111).

8. The contactor according to claim 6, characterized in that: Each mounting part (220) extends away from the substrate (210) and is provided with an arc-blocking part (260). The arc-blocking part (260) is located between the two main stationary contacts (320) of the main contact assembly (300) in a first direction. The arc-blocking part (260) is provided with an arc-blocking groove (261). Each partition chamber is provided with an arc-blocking plate (114). The arc-blocking plate (114) is located between the two main stationary contacts (320) of the main contact assembly (300) in a first direction. The arc-blocking plate (114) extends at least partially into the arc-blocking groove (261).

9. The contactor according to claim 1, characterized in that: It also includes a reaction spring (600). The coil assembly (400) includes a coil frame (410), a coil (420), and a stationary iron core (430). Both the moving iron core (500) and the stationary iron core (430) have an E-shaped structure with three protruding structures. The three protruding structures of the moving iron core (500) and the stationary iron core (430) are respectively arranged opposite to each other, and the middle protruding structure extends into both ends of the coil frame (410). The coil (420) is located on the outside of the coil frame (410) and between the two protruding structures on the outside of the stationary iron core (430). The coil (420) has... Both ends are electrically connected to two coil terminals (450) respectively; when the coil (420) is energized, the moving iron core (500) is driven by the electromagnetic force of the coil (420) to move towards the stationary iron core (430), and the moving iron core (500) drives the active contact bridge (310) to contact the main stationary contact (320). The moving iron core (500) also drives the reaction spring (600) to store energy; when the coil (420) is de-energized, the reaction spring (600) releases energy and drives the moving iron core (500) to move away from the stationary iron core (430). The moving iron core (500) drives the active contact bridge (310) to separate from the main stationary contact (320).

10. The contactor according to claim 5, characterized in that: The main terminal (330) is an elastic clip structure with an opening along the second direction; the main cover (110) has a first wiring hole (115) corresponding to the main terminal (330) at the bottom in the second direction away from the substrate (210).

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