Iron core structure of contactor

Abstract

The iron core structure comprises a static iron core assembly, a movable iron core assembly and a coil, the static iron core assembly comprises a static iron core, a coil framework and a magnet yoke, the coil framework is arranged on the inner side of the static iron core, the coil is wound on the coil framework, the magnet yoke is arranged on the outer side of the static iron core, and the movable iron core assembly is arranged on the magnet yoke. The static iron core assembly is fixedly installed in the contactor, the coil is wound on the static iron core assembly, and the movable iron core assembly is movably inserted in the static iron core assembly in a penetrating mode and can move up and down relative to a static iron core; the coil framework is specially designed for the coil, the coil is wound on the coil framework, so that the coil formed by winding the coil is convenient to form a regular shape, the static iron core assembly and the movable iron core assembly are convenient to effectively isolate, after the coil is electrified, the movable iron core assembly moves and does not make contact with the coil of the coil, and noise is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to an iron core structure of a contactor. Background Technique

[0002] AC contactors are widely used in low-voltage circuits. They are industrial necessities that are safe to use, convenient to control, large in quantity and wide in scope. Their working principle is that when the electromagnetic coil of the contactor is not energized, the reaction force of the spring and the weight of the armature core keep the main contacts in the open position. When the AC contactor coil is energized, the coil current generates a magnetic field. The generated magnetic field makes the static iron core 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. The two are linked. Most of the existing coils of AC contactors are directly wound on the static iron core without designing corresponding structures for them, resulting in irregular shapes of the wire packages after the coils are wound. Moreover, when the coils are working, there is no effective isolation, and noise is likely to occur after being energized.

[0003] In view of this, it is necessary to provide a new iron core structure of a contactor to overcome the above defects. Content of the Utility Model

[0004] The purpose of the utility model is to provide an iron core structure of a contactor. A coil skeleton is specially designed for the coil, which is convenient for the wire package after the coil is wound to form a regular shape, and is also convenient for effectively isolating the static iron core assembly and the moving iron core assembly. After the coil is energized, the moving iron core assembly will not contact the wire package of the coil when it moves, avoiding noise.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is realized as follows: An iron core structure of a contactor includes a static iron core assembly, a moving iron core assembly and a coil. The static iron core assembly includes a static iron core, a coil skeleton and a yoke. The coil skeleton is arranged inside the static iron core. The coil is wound on the coil skeleton. The yoke is installed on the outside of the static iron core.

[0006] The static iron core assembly is fixedly installed inside the contactor. The coil is wound on the static iron core assembly. 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.

[0007] Preferably, a bayonet is opened inside the static iron core. The top and bottom ends of the coil skeleton are clamped in the bayonet.

[0008] Preferably, an installation groove is opened on the outside of the static iron core. The yoke is installed in the installation groove.

[0009] 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, and the elastic member is installed at the bottom of the moving iron core to drive the moving contact bridge to move up and down.

[0010] Compared with the prior art, the beneficial effects are as follows: A coil bobbin is specially designed for the coil. By winding the coil around the coil bobbin, it is convenient for the wire package formed after winding the coil to form a regular shape, and it is also convenient to effectively isolate the static iron core assembly and the moving iron core assembly. After the coil is energized, the moving iron core assembly will not contact the wire package of the coil during movement, avoiding noise.

[0011] Other features and advantages of the present invention will be described in the following description, and some will be obvious from the description, or can be understood through the implementation of the present invention. The features and advantages of the present invention can be achieved and obtained through the elements and combinations specifically pointed out in the appended claims. These and other features of the present invention will become more clear and obvious according to the following description and the appended claims, or can be understood through the implementation of the embodiments described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a three-dimensional view of the iron core structure of the contactor of the present invention.

[0014] Figure 2 is Figure 1 an assembly drawing of the static iron core and the yoke of the shown AC contactor.

[0015] Figure 3 is Figure 2 a three-dimensional view of the yoke of the shown AC contactor.

[0016] Reference numerals: 1, static iron core assembly; 11, static iron core; 111, bayonet; 112, installation groove; 12, coil bobbin; 13, yoke; 2, moving iron core assembly; 21, moving iron core; 22, elastic member; 3, coil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the purpose, technical solution 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 embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0018] It should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing 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 cannot be understood as a limitation to the present utility model.

[0019] It should also be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be determined according to specific circumstances.

[0020] Please refer to Figures 1 to 3 , the present utility model provides an iron core structure of a contactor, including a static iron core assembly 1, a moving iron core assembly 2 and a coil 3. The static iron core assembly 1 includes a static iron core 11, a coil bobbin 12 and a yoke 13. The coil bobbin 12 is arranged inside the static iron core 11, the coil 3 is wound around the coil bobbin 12, and the yoke 13 is installed on the outside of the static iron core 11.

[0021] The static iron core assembly 1 is fixedly installed inside the contactor, the coil 3 is wound around the static iron core assembly 1, and the moving iron core assembly 2 is movably inserted into the static iron core assembly 1 and can move up and down relative to the static iron core 11.

[0022] In this way, a coil bobbin 12 is specifically designed for the coil 3. By winding the coil 3 around the coil bobbin 12, it is convenient for the wire package after winding the coil 3 to form a regular shape, and it is also convenient to effectively isolate the static iron core assembly 1 and the moving iron core assembly 2. After the coil 3 is energized, the moving iron core assembly 2 will not contact the wire package of the coil 3 during movement, avoiding the occurrence of noise.

[0023] Further, a bayonet 111 is provided inside the static iron core 11. The coil bobbin 12 is in an "I" shape, and the top and bottom ends of the coil bobbin 12 are clamped in the bayonet 111 to limit the coil bobbin 12 and prevent the wire package on the coil bobbin 12 from shifting in position.

[0024] Further, a mounting groove 112 is provided on the outer side of the static iron core 11, and the yoke 13 is installed in the mounting groove 112.

[0025] Further, the moving iron core assembly 2 includes a moving iron core 21 and an elastic member 22 (such as a spring). The moving iron core 21 is movably inserted through the coil bobbin 12, and the elastic member 22 is installed at the bottom of the moving iron core 21. The elastic member 22 drives the moving contact bridge to move up and down, so that the moving contact bridge of the contactor contacts or separates from the static contact bridge.

[0026] During use, by winding the coil 3 around the coil bobbin 12, since the coil bobbin 12 is specially designed for the coil 3, it is convenient for the wire package formed after winding the coil 3 to form a regular shape, and it is also convenient to effectively isolate the static iron core assembly 1 and the moving iron core assembly 2. After the coil 3 is powered on, the moving iron core assembly 2 will not contact the wire package of the coil 3 during movement, avoiding noise.

[0027] 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 the specific details, representative devices, and illustrated examples shown and described herein.

Claims

1. A contactor core structure, characterized in that: The invention comprises a static iron core component (1), a dynamic iron core component (2) and a coil (3), wherein the static iron core component (1) comprises a static iron core (11), a coil frame (12) and a magnetic yoke (13), wherein the coil frame (12) is arranged on the inner side of the static iron core (11), the coil (3) is wound on the coil frame (12), and the magnetic yoke (13) is installed on the outer side of the static iron core (11). The static iron core assembly (1) is fixedly mounted inside the contactor, the coil (3) is wound around the static iron core assembly (1), and the movable iron core assembly (2) is movably inserted into the static iron core assembly (1) and is capable of moving up and down relative to the static iron core (11).

2. The iron core structure of the contactor according to claim 1, characterized in that: A bayonet (111) is provided on the inner side of the static iron core (11), and the top and bottom ends of the coil frame (12) are clamped in the bayonet (111).

3. The iron core structure of the contactor according to claim 1, characterized in that: An installation groove (112) is provided on the outer side of the static iron core (11), and the magnetic yoke (13) is installed in the installation groove (112).

4. The iron core structure of the contactor according to claim 1, characterized in that: The moving iron core assembly (2) comprises a moving iron core (21) and an elastic member (22); the moving iron core (21) is movably inserted into the coil frame (12); and the elastic member (22) is installed at the bottom of the moving iron core (21) to drive the moving contact bridge to move up and down.

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