AC contactor structure

Abstract

The utility model relates to the technical field of electrical switches, in particular to an alternating current contactor structure, which comprises a main body, a movable iron core fixing device is arranged inside the main body, a contact pressing device is arranged outside the main body, the inner wall of the main body is fixedly connected with a bottom plate, and the other ends of two first springs are fixedly connected with the main body. Through cooperation of the main body and the movable iron core fixing device, the pressing block drives the push rod to move, the push rod drives the abutting block to move, the second spring drives the abutting block to abut against the movable iron core, and then an operator enables a limiting bolt to penetrate through the pressing block and screw the limiting bolt into the main body. Through the cooperation of the main body and the contact pressing device, the rotating disc drives the sliding block to move, the sliding block drives the pressing block to move, and the pressing block abuts against the contacts, so that the two contacts can be in close contact, the situation that the contacts cannot be in contact can be avoided through the mode, and the working quality of the alternating current contactor is improved.

Description

Technical Field

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

[0002] The working principle of the AC contactor is to use the electromagnetic force and the spring force to achieve the connection and disconnection of the contacts. The AC contactor has two working states: de-energized state and energized state. When the attraction coil is energized, the static iron core generates electromagnetic attraction, the armature is attracted, and the connecting rod connected to the armature drives the contact to move, so that the normally closed contact is disconnected and the contactor is in the energized state; when the attraction coil is de-energized, the electromagnetic attraction disappears, the armature is reopened, the normally open contact is closed, and the position spring is released, all contacts are reset, and the contactor is in the de-energized state.

[0003] For example, a position-limiting AC contactor with the authorization announcement number "CN204809148U" ensures that the main coil does not need to be energized when the position is fixed. The AC contactor has a simple structure and saves energy. However, when the movable iron core of the position-limiting AC contactor needs to be contacted to limit the position, it is inconvenient for the operator to contact the limit switch, which makes it inconvenient for the operator to operate. At the same time, since the two contacts of the position-limiting AC contactor often need to collide, the two contacts will not be able to contact after working for a long time, which reduces the working quality of the position-limiting AC contactor. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when the moving iron core needs to be contacted to the limit switch, it is inconvenient for the operator to contact the limit switch, which is inconvenient for the operator to operate; and because the two contacts often need to collide, the two contacts cannot be in contact after working for a long time, which reduces the working quality of the limit AC contactor, and an AC contactor structure is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An AC contactor structure is designed, including a main body, a moving iron core fixing device is provided inside the main body, a contact clamping device is provided outside the main body, the inner wall of the main body is fixedly connected to a base plate, the outer wall of the base plate is adjacent to the moving iron core through a through hole, two protrusions are processed on the surface of the moving iron core, the outer walls of the two protrusions are slidably connected to the base plate through a slide groove, the outer wall of the moving iron core is fixedly connected to one end of two first springs, and the other ends of the two first springs are fixedly connected to the main body.

[0007] Preferably, the moving iron core fixing device includes a pressure block, the outer wall of the pressure block is slidably connected to the main body, the outer wall of the pressure block is threadedly connected to the limiting bolt, the outer wall of the limiting bolt is threadedly connected to the outer wall of the main body, the outer wall of the pressure block is fixedly connected to the push rod, the outer wall of the push rod is fixedly connected to the clamping block, the outer wall of the clamping block is slidably connected to the bottom plate through a slide groove, a second spring is wound around the surface of the push rod, and one end of the second spring is fixedly connected to the clamping block.

[0008] Preferably, the other end of the second spring is fixedly connected to the main body, and the outer wall of the abutting block is abutted against the moving iron core.

[0009] Preferably, the contact clamping device includes a shell, the outer walls of the two shells are fixedly connected to the main body, the outer walls of the two shells are movably connected to the knob through a bearing, the outer wall of the knob is fixedly connected to the turntable, the inner wall of the turntable is slidably connected to two sliders through a curved groove, the outer walls of the two sliders are respectively fixedly connected to two pressure blocks, the outer walls of the two pressure blocks are slidably connected to the inner wall of the main body through a sliding groove, and the outer walls of multiple pressure blocks are all in contact with the contacts.

[0010] Preferably, the outer wall of the moving iron core is fixedly connected to the first bent rod, and the outer wall of the first bent rod is fixedly connected to a contact.

[0011] Preferably, the outer wall of the main body is movably connected to the starting switch, the starting switch is electrically connected to the main coil, the main coil is wound on the fixed iron core, the outer wall of the fixed iron core is fixedly connected to the second bent rod, the outer wall of the second bent rod is fixedly connected to another contact, the outer wall of the second bent rod is slidably connected to the partition through a slide groove, and the outer walls of the partitions are fixedly connected to the inner wall of the main body.

[0012] The utility model proposes an AC contactor structure, which has the beneficial effect that: through the cooperation between the main body and the moving iron core fixing device, the pressure block drives the push rod to move, the push rod drives the clamping block to move, the clamping block is away from the moving iron core, and at the same time, after the second spring is compressed, the operator releases the pressure block, the second spring is reset, and the second spring drives the clamping block to clamp the moving iron core, and then the operator passes the limit bolt through the pressure block and screws it into the main body. The above method can facilitate the operator to use the AC contactor.

[0013] Through the cooperation of the main body and the contact clamping device, the knob drives the turntable to rotate, the turntable drives the slider to move, the slider drives the pressure block to move, and the pressure block presses against the contact so that the two contacts can be in close contact. The above method can avoid the situation where the contacts cannot contact, which improves the working quality of the AC contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A front view schematic diagram of

[0016] Figure 3 for Figure 2 A rear cross-sectional schematic diagram of

[0017] Figure 4 for Figure 1 A side cross-sectional schematic diagram of

[0018] Figure 5 for Figure 3 A partial downward sectional schematic diagram of

[0019] Figure 6 for Figure 1 A schematic side cross-sectional view of the middle shell.

[0020] In the figure: 1. main body, 2. moving iron core fixing device, 201. limiting bolt, 202. pressure block, 203. push rod, 204. second spring, 205. pressing block, 3. contact pressing device, 301. shell, 302. knob, 303. turntable, 304. slider, 305. pressure block, 4. bottom plate, 5. moving iron core, 6. protrusion, 7. first spring, 8. first bent rod, 9. contact, 10. starting switch, 11. main coil, 12. fixed iron core, 13. second bent rod, 14. partition. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] See attached Figure 1-6 : In the present embodiment, an AC contactor structure includes a main body 1, a moving iron core fixing device 2 is provided inside the main body 1, a contact pressing device 3 is provided outside the main body 1, the inner wall of the main body 1 is fixedly connected to the bottom plate 4, the outer wall of the bottom plate 4 is adjacent to the moving iron core 5 through a through hole, and the surface of the moving iron core 5 is processed with two protrusions 6, the outer walls of the two protrusions 6 are slidably connected to the bottom plate 4 through a slide groove, the protrusions 6 slide on the bottom plate 4, the outer wall of the moving iron core 5 is fixedly connected to one end of two first springs 7, the moving iron core 5 drives the first spring 7 to extend or shorten, the elastic coefficient of the first spring 7 is selected according to actual needs, and the selection can meet the work needs, the other ends of the two first springs 7 are fixedly connected to the main body 1, the first spring 7 is fixed on the main body 1, the other end of the second spring 205 is fixedly connected to the main body 1, the second spring 205 is fixed on the main body 1, the size of the second spring 205 is selected according to actual needs, and the selection can meet the work needs, the outer wall of the pressing block 205 is pressed against the moving iron core 5, and the pressing block 205 prevents the moving iron core from moving;

[0023] The outer wall of the moving iron core 5 is fixedly connected to the first bent rod 8, and the moving iron core 5 drives the first bent rod 8 to move. The outer wall of the first bent rod 8 is fixedly connected to a contact 9, and the first bent rod 8 drives the contact 9 to move. The outer wall of the main body 1 is movably connected to the starting switch 10, and the starting switch 10 is electrically connected to the main coil 11. The main coil 11 is wound on the fixed iron core 12. The outer wall of the fixed iron core 12 is fixedly connected to the second bent rod 13. The outer wall of the second bent rod 13 is fixedly connected to another contact 9. The outer wall of the second bent rod 13 is slidably connected to the partition 14 through a slide groove. The second bent rod 13 moves on the partition 14, and the outer walls of the partition 14 are fixedly connected to the inner wall of the main body 1.

[0024] See attached Figure 1 , Figure 2 and Figure 4 : In this embodiment, an AC contactor structure is provided, and the moving iron core fixing device 2 includes a pressure block 202, the outer wall of the pressure block 202 is slidably connected to the main body 1, the pressure block 202 moves on the main body 1, the outer wall of the pressure block 202 is threadedly connected to the limiting bolt 201, the limiting bolt 201 prevents the pressure block 202 from moving, the outer wall of the limiting bolt 201 is threadedly connected to the outer wall of the main body 1, the limiting bolt 201 is tightened on the main body 1, the outer wall of the pressure block 202 is fixedly connected to the push rod 203, the pressure block 202 drives the push rod 203 to move, the outer wall of the push rod 203 is fixedly connected to the tightening block 205, the push rod 203 drives the tightening block 205 to move, the outer wall of the tightening block 205 is slidably connected to the bottom plate 4 through a slide groove, the tightening block 205 moves on the bottom plate 4, the surface of the push rod 203 is wound with a second spring 204, one end of the second spring 204 is fixedly connected to the tightening block 205, and the tightening block 205 drives the second spring 204 to move.

[0025] See attached Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 In the present embodiment, an AC contactor structure is provided, wherein the contact pressing device 3 comprises a shell 301, the outer walls of the two shells 301 are fixedly connected to the main body 1, the shell 301 is fixed on the main body 1, the outer walls of the two shells 301 are movably connected to the knob 302 through a bearing, the knob 302 rotates on the shell 301, the outer wall of the knob 302 is fixedly connected to the turntable 303, the knob 302 drives the turntable 303 to rotate, the inner wall of the turntable 303 is slidably connected to the two sliders 304 through a curved groove, the turntable 303 drives the sliders 304 to move, the outer walls of the two sliders 304 are respectively fixedly connected to the two pressing blocks 305, the sliders 304 drive the pressing blocks 305 to move, the outer walls of the two pressing blocks 305 are slidably connected to the inner wall of the main body 1 through a sliding groove, the pressing blocks 305 slide on the main body 1, the outer walls of the plurality of pressing blocks 305 are all in contact with the contacts 9, and the pressing blocks 305 press the contacts.

[0026] Working principle:

[0027] When using this AC contactor:

[0028] AC contactor opening stage:

[0029] First, the operator pulls open the pressure block 202, and the pressure block 202 drives the push rod 203 to move, and the push rod 203 drives the clamping block 205 to move, and the clamping block 205 moves away from the moving iron core 5, and the second spring 204 is compressed at the same time. Then the operator presses the starting switch 10, and the starting switch 10 energizes the main coil 11, and the main coil 11 energizes the fixed iron core 12 with magnetic force, and then the fixed iron core 12 attracts the moving iron core 5 to move, and the moving iron core 5 drives the first bent rod 8 to move, and the first bent rod 8 drives the contact 9 to approach the other contact 9. When the fixed iron core 12 contacts the moving iron core 5, the two contacts 9 just touch, so that the two contacts 9 are connected, and then the operator releases the pressure block 202, the second spring 204 resets, and the second spring 204 drives the clamping block 205 to press against the moving iron core 5, and then the operator passes the limit bolt 201 through the pressure block 202 and screws it into the main body 1.

[0030] Contact adjustment stage:

[0031] The operator rotates the knob 302, the knob 302 drives the rotating disk 303 to rotate, the rotating disk 303 drives the slider 304 to move, the slider 304 drives the pressing block 305 to move, the pressing block 305 presses against the contact 9, so that the two contacts 9 can be in close contact, and then the operator stops rotating the knob 302, so that the two contacts 9 can always be in close contact.

[0032] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An AC contactor structure, comprising a main body (1), characterized in that: A moving iron core fixing device (2) is provided inside the main body (1), and a contact clamping device (3) is provided outside the main body (1). The inner wall of the main body (1) is fixedly connected to the bottom plate (4), and the outer wall of the bottom plate (4) is adjacent to the moving iron core (5) through a through hole. Two protrusions (6) are processed on the surface of the moving iron core (5), and the outer walls of the two protrusions (6) are slidably connected to the bottom plate (4) through a sliding groove. The outer wall of the moving iron core (5) is fixedly connected to one end of two first springs (7), and the other ends of the two first springs (7) are fixedly connected to the main body (1).

2. An AC contactor structure according to claim 1, characterized in that: The moving iron core fixing device (2) comprises a pressure block (202), the outer wall of the pressure block (202) is slidably connected to the main body (1), the outer wall of the pressure block (202) is threadedly connected to the limiting bolt (201), the outer wall of the limiting bolt (201) is threadedly connected to the outer wall of the main body (1), the outer wall of the pressure block (202) is fixedly connected to the push rod (203), the outer wall of the push rod (203) is fixedly connected to the clamping block (205), the outer wall of the clamping block (205) is slidably connected to the bottom plate (4) via a sliding groove, and a second spring (204) is wound around the surface of the push rod (203), and one end of the second spring (204) is fixedly connected to the clamping block (205).

3. An AC contactor structure according to claim 2, characterized in that: The other end of the second spring (204) is fixedly connected to the main body (1), and the outer wall of the abutting block (205) is abutted against the moving iron core (5).

4. The AC contactor structure according to claim 1, characterized in that: The contact pressing device (3) comprises a shell (301), the outer walls of the two shells (301) are fixedly connected to the main body (1), the outer walls of the two shells (301) are movably connected to the knob (302) via a bearing, the outer wall of the knob (302) is fixedly connected to the turntable (303), the inner wall of the turntable (303) is slidably connected to two sliders (304) via a curved groove, the outer walls of the two sliders (304) are respectively fixedly connected to two pressing blocks (305), the outer walls of the two pressing blocks (305) are slidably connected to the inner wall of the main body (1) via a sliding groove, and the outer walls of the plurality of pressing blocks (305) are all in contact with the contacts (9).

5. The AC contactor structure according to claim 1, characterized in that: The outer wall of the moving iron core (5) is fixedly connected to the first bent rod (8), and the outer wall of the first bent rod (8) is fixedly connected to a contact (9).

6. The AC contactor structure according to claim 1, characterized in that: The outer wall of the main body (1) is movably connected to the starting switch (10), the starting switch (10) is electrically connected to the main coil (11), the main coil (11) is wound on the fixed iron core (12), the outer wall of the fixed iron core (12) is fixedly connected to the second bent rod (13), the outer wall of the second bent rod (13) is fixedly connected to another contact (9), the outer wall of the second bent rod (13) is slidably connected to the partition (14) through a sliding groove, and the outer wall of the partition (14) is fixedly connected to the inner wall of the main body (1).

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