Alternating current contactor

Abstract

The utility model provides an AC contactor comprising a housing, a static iron core assembly, a movable iron core assembly, a coil, a circuit board, a static contact bridge and a movable contact bridge. The shell is provided with an opening and closing observation port, the static iron core assembly and the circuit board are fixedly installed in the shell, the coil is wound on the static iron core assembly, the static contact bridge is electrically connected with the circuit board, the movable contact bridge is connected with the movable iron core assembly, the movable iron core assembly is movably inserted in the static iron core assembly in a penetrating mode, and the static contact bridge is electrically connected with the circuit board. The movable contact bridge can move up and down relative to the static iron core to contact or separate the movable contact bridge from the static contact bridge; the opening and closing state can be conveniently observed through the opening and closing observation port, and data can be conveniently sent to intelligent control devices such as a control panel and an industrial personal computer by connecting the USB interface with the intelligent control devices.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to an AC contactor. Background Art

[0002] An AC contactor is an electrical appliance that uses a coil to pass an electric current to generate a magnetic field, causing the contact to close to control a load. When the coil of the AC contactor is energized, the coil current will generate a magnetic field. The generated magnetic field causes the static iron core to generate electromagnetic suction to attract the moving iron core, and drives the contacts of the AC contactor to act. The normally closed contacts are disconnected, and the normally open contacts are closed, and the two are linked. When the coil is de-energized, the electromagnetic suction disappears, and the moving iron core is released under the action of the release spring, so that the contacts are restored, the normally open contacts are disconnected, and the normally closed contacts are closed. The existing AC contactor cannot directly observe the open and closed states of the contacts, nor can it transmit data to the control panel.

[0003] In view of this, it is necessary to provide a new type of AC contactor to overcome the above defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an AC contactor, which can conveniently observe the closed and open states through the opening and closing observation port, and can conveniently connect to intelligent control devices such as a control panel and an industrial control computer through a USB interface to send data to the intelligent control device.

[0005] To achieve the above purpose, the technical solution provided by the utility model is realized as follows: an AC contactor includes a housing, a static iron core assembly, a moving iron core assembly, a coil, a circuit board, a static contact bridge and a moving contact bridge; a opening and closing observation port is arranged on the housing,

[0006] The static iron core assembly and the circuit board are fixedly installed in the housing, the coil is wound around the static iron core assembly, the static contact bridge is electrically connected to the circuit board, the moving contact bridge is connected to the moving iron core assembly, and the moving iron core assembly is movably inserted into the static iron core assembly and can move up and down relative to the static iron core to make the moving contact bridge contact or separate from the static contact bridge.

[0007] Preferably, a USB interface is arranged on the housing.

[0008] Preferably, the static iron core assembly includes a static iron core, a coil bobbin and a yoke. The coil bobbin is arranged inside the static iron core, the coil is wound around the coil bobbin, an installation groove is formed on the outer side of the static iron core, and the yoke is installed in the installation groove.

[0009] Preferably, the static iron core assembly further includes a fixing frame, and the fixing frame is installed on the top surface of the static iron core and contacts the inner wall of the housing.

[0010] Preferably, the static iron core assembly further includes a fixing bolt which is installed in the housing through the static iron core.

[0011] Preferably, the moving iron core assembly includes a moving iron core and an elastic member. The moving iron core is movably inserted into the coil bobbin, the elastic member is installed at the bottom of the moving iron core, and the moving contact bridge is connected to the elastic member and is arranged opposite to the static contact bridge.

[0012] Preferably, static contacts are provided on the static contact bridge, moving contacts are provided on the moving contact bridge, and the moving contacts and the static contacts are distributed oppositely.

[0013] Preferably, arc-drawing grid plates are installed in the insulating housing.

[0014] Compared with the prior art, the beneficial effects are as follows: It is convenient to observe the closed and separated states through the opening for separating and combining, and it is convenient to connect intelligent control devices such as a control panel and an industrial personal computer through a USB interface to send data to the intelligent control devices.

[0015] Other features and advantages of the present utility model will be described in the following description, and some of them will be obvious from the description, or can be understood through the implementation of the present utility model. The features and advantages of the present utility model can be realized and obtained by the elements and combinations specifically pointed out in the appended claims. These and other features of the present utility model will become more clear and obvious according to the following description and the appended claims, or can be understood through the embodiments described in the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a perspective view of the AC contactor of the present utility model.

[0018] Figure 2 is Figure 1 the sectional view of the AC contactor shown.

[0019] Figure 3 is Figure 2 the assembly drawing of the static iron core and the yoke of the AC contactor shown.

[0020] Figure 4 is Figure 3 the perspective view of the yoke of the AC contactor shown.

[0021] Reference numerals: 1, housing; 11, opening for observing separation and combination; 12, USB interface; 2, static iron core assembly; 21, static iron core; 211, mounting groove; 22, coil bobbin; 23, yoke; 24, fixing bracket; 25, fixing bolt; 3, moving iron core assembly; 31, moving iron core; 32, elastic member; 4, coil; 5, circuit board; 6, static contact bridge; 61, static contact; 7, moving contact bridge; 71, moving contact; 8, arc ignition grid piece; 9, auxiliary switch. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and beneficial technical effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0023] It should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for facilitating the description of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] It should also be noted that, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances.

[0025] Please refer to Figures 1 to 4 , the present utility model provides an AC contactor, including a housing 1, a static iron core assembly 2, a moving iron core assembly 3, a coil 4, a circuit board 5, a static contact bridge 6 and a moving contact bridge 7; an opening 11 for observing separation and combination is provided on the housing 1,

[0026] the static iron core assembly 2 and the circuit board 5 are fixedly installed in the housing 1, the coil 4 is wound around the static iron core assembly 2, the static contact bridge 6 is electrically connected to the circuit board 5, the moving contact bridge 7 is connected to the moving iron core assembly 3, the moving iron core assembly 3 is movably inserted into the static iron core assembly 2, and can move up and down relative to the static iron core 21 to make the moving contact bridge 7 contact or separate from the static contact bridge 6.

[0027] Thus, when power is supplied to the coil 4, the coil 4 generates a magnetic field, and the moving iron core assembly 3 moves upward to bring the moving contact bridge 7 into contact with the static contact bridge 6. At this time, the AC contactor is in the closed state; when the power supply to the coil 4 is cut off, the moving iron core assembly 3 moves downward to its original position to separate the moving contact bridge 7 from the static contact bridge 6. At this time, the AC contactor is in the open state. It is convenient to observe the closed and open states through the opening and closing observation port 11.

[0028] Furthermore, a USB interface 12 is provided on the housing 1, which facilitates connecting intelligent control devices such as a control panel and an industrial computer through the USB interface 12 and sending data to the intelligent control devices.

[0029] Furthermore, the static iron core assembly 2 includes a static iron core 21, a coil skeleton 22, and a yoke 23. The coil skeleton 22 is arranged inside the static iron core 21, the coil 4 is wound around the coil skeleton 22, an installation groove 211 is formed on the outer side of the static iron core 21, and the yoke 23 is installed in the installation groove 211.

[0030] Furthermore, the static iron core assembly 2 further includes a fixing bracket 24. The fixing bracket 24 is installed on the top surface of the static iron core 21 and contacts the inner wall of the housing 1, and the gap between the static iron core 21 and the housing 1 is filled through the fixing bracket 24.

[0031] Furthermore, the static iron core assembly 2 further includes a fixing bolt 25. The fixing bolt 25 passes through the static iron core 21 and is fixedly installed inside the housing 1.

[0032] Furthermore, the moving iron core assembly 3 includes a moving iron core 31 and an elastic member 32 (such as a spring). The moving iron core 31 is movably inserted into the coil skeleton 22, the elastic member 32 is installed at the bottom of the moving iron core 31, the moving contact bridge 7 is connected to the elastic member 32 and is arranged opposite to the static contact bridge 6. The elastic member 32 drives the moving contact bridge 7 to move up and down, so that the moving contact bridge 7 contacts or separates from the static contact bridge 6.

[0033] Furthermore, static contact points 61 are provided on the static contact bridge 6, moving contact points 71 are provided on the moving contact bridge 7, and the moving contact points 71 and the static contact points 61 are distributed oppositely. The elastic member 32 drives the moving contact bridge 7 to move upward, so that the moving contact point 71 of the moving contact bridge 7 is attracted and contacts the static contact point 61 of the static contact bridge 6, or the elastic member 32 drives the moving contact bridge 7 to move downward, so that the moving contact point 71 of the moving contact bridge 7 separates from the static contact point 61 of the static contact bridge 6.

[0034] Furthermore, an arc extinguishing grid 8 is installed inside the insulating housing to quickly cut off the arc and prevent the main contacts from being burned out.

[0035] Further, the AC contactor further includes an auxiliary switch 9 which has auxiliary contacts, facilitating the formation of a self-locking circuit and an interlocking circuit, and also facilitating the signal transmission of the circuit.

[0036] The present utility model is not limited only to what is described in the specification and embodiments. Therefore, for those skilled in the art, additional advantages and modifications can be easily achieved. Thus, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present utility model is not limited to specific details, representative devices, and the illustrated examples shown and described herein.

Claims

1. An AC contactor, characterized in that: The invention comprises a housing (1), a static iron core assembly (2), a dynamic iron core assembly (3), a coil (4), a circuit board (5), a static contact bridge (6) and a dynamic contact bridge (7); the housing (1) is provided with an opening and closing observation port (11). The static iron core assembly (2) and the circuit board (5) are fixedly installed in the housing (1); the coil (4) is wound on the static iron core assembly (2); the static contact bridge (6) is electrically connected to the circuit board (5); the movable contact bridge (7) is connected to the movable iron core assembly (3); the movable iron core assembly (3) is movably inserted into the static iron core assembly (2) and can move up and down relative to the static iron core (21) to make the movable contact bridge (7) contact or separate from the static contact bridge (6).

2. The AC contactor according to claim 1, characterized in that: The housing (1) is provided with a USB interface (12).

3. The AC contactor according to claim 1, characterized in that: The static iron core assembly (2) comprises a static iron core (21), a coil frame (22) and a yoke (23); the coil frame (22) is arranged on the inner side of the static iron core (21); the coil (4) is wound on the coil frame (22); a mounting groove (211) is provided on the outer side of the static iron core (21); and the yoke (23) is installed in the mounting groove (211).

4. The AC contactor according to claim 3, characterized in that: The static iron core assembly (2) further comprises a fixing frame (24), wherein the fixing frame (24) is mounted on the top surface of the static iron core (21) and is in contact with the inner wall of the housing (1).

5. The AC contactor according to claim 3, characterized in that: The static iron core assembly (2) further comprises a fixing bolt (25), wherein the fixing bolt (25) passes through the static iron core (21) and is installed in the housing (1).

6. The AC contactor according to claim 1, characterized in that: The moving iron core assembly (3) comprises a moving iron core (31) and an elastic member (32); the moving iron core (31) is movably inserted into the coil frame (22); the elastic member (32) is installed at the bottom of the moving iron core (31); and the moving contact bridge (7) is connected to the elastic member (32) and is arranged opposite to the stationary contact bridge (6).

7. The AC contactor according to claim 6, characterized in that: The stationary contact bridge (6) is provided with a stationary contact point (61), the moving contact bridge (7) is provided with a moving contact point (71), and the moving contact point (71) is distributed relative to the stationary contact point (61).

8. The AC contactor according to claim 1, characterized in that: An arc-starting grid (8) is installed in the shell.

Images