Contactor

Abstract

Provided is a contactor. The problem that an existing contactor is poor in universality is solved. The switch comprises a base, a pedestal and a rod core, and further comprises a contact system which comprises a plurality of groups of main contact assemblies; the main contact assembly is arranged on the rod core and is driven by the rod core to move so that a circuit can be switched on and off. The electromagnetic system comprises a coil rack, a movable iron core and a static iron core, and a coil is wound on the coil rack; the wiring terminal is arranged on the coil rack or the base; the control circuit board is arranged in the base, and the control circuit board is connected with the wiring terminal and used for switching input current into direct current or alternating current for driving the movable iron core to act; and the control circuit board is connected with the coil on the coil rack and is used for driving the movable iron core to act and attract. The utility model also has the advantages of simple structure, convenience in assembly, reliable action, wide adaptation range, long service life and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric appliance field, specifically a kind of contactor. BACKGROUND

[0002] Contactor is divided into AC contactor (voltage AC) and DC contactor (voltage DC), is the contactor generalization refers to the industrial electricity using coil current to generate magnetic field, make contact closure, to achieve the control load electrical appliance. In electrotechnics, because can quickly cut off AC and DC main circuit and can frequently connect with large current control circuit device, so often used in motor as control object, also can be used as control factory equipment, electric heater, working mother machine and various power units etc. Power load, contactor not only can connect and cut off circuit, but also has low voltage release protection function. Contactor control capacity is large, suitable for frequent operation and remote control, is one of important elements in automatic control system. Existing contactor whether AC contactor or DC contactor, it can only be used in specific circuit, not mixed use, such as DC contactor is set in the place of AC current, AC current cannot work at this time. And existing contactor usually includes main contact and auxiliary contact, wherein auxiliary contact is usually only selected normally closed or normally open, therefore, existing user purchases again, both need to select according to the communication mode of auxiliary contact, and it is more complicated, and it is more difficult for non-professionals (such as procurement personnel), and because of not universal, also cause great waste. SUMMARY

[0003] To solve the problem of poor universal of existing contactor in the background art, the utility model provides a kind of contactor.

[0004] The technical scheme of the utility model is: a kind of contactor, including base, pedestal and stem core, further including:

[0005] Contact system, is located on pedestal, the contact system includes multiple groups of main contact component;The main contact component is located stem core and is moved by stem core to make circuit on-off;

[0006] Electromagnetic system, the electromagnetic system includes coil holder, moving iron core and static iron core, the coil holder is wound with coil, the moving iron core has the first position with static iron core attraction and the second position with static iron core separation;The moving iron core is linked with stem core connection;

[0007] Terminal, is located on coil holder or pedestal;

[0008] The control circuit board is arranged in the base, and is connected with the terminal and used for switching the input current into direct current or alternating current to drive the moving iron core to act.

[0009] As a further improvement of the utility model, the base is provided with a first accommodating cavity and a second accommodating cavity; the coil holder is arranged in the first accommodating cavity; and the control circuit board is arranged in the second accommodating cavity.

[0010] As a further improvement of the utility model, the second accommodating cavity is provided with a limiting groove, and the control circuit board is inserted into the limiting groove and limited by the limiting groove.

[0011] As a further improvement of the utility model, the utility model further comprises a cover plate, the cover plate is arranged on the second accommodating cavity and used for shielding the control circuit board.

[0012] As a further improvement of the utility model, the lower surface of the cover plate is provided with a limiting column, the limiting column is in L shape, and the limiting column in L shape is matched with the inner surface of the second accommodating cavity.

[0013] As a further improvement of the utility model, the utility model further comprises a limiting part arranged on the coil holder or the base; the coil holder or the base is matched with the base to form a gap, the cover plate is inserted into the gap, and the limiting part is arranged above the cover plate and used for vertically limiting the cover plate.

[0014] As a further improvement of the utility model, the static iron core is provided with an insertion block, and the base is provided with an insertion slot matched with the insertion block.

[0015] As a further improvement of the utility model, the insertion block is integrally formed by using rubber material, and the insertion block is provided with a guide inclined surface facilitating insertion into the insertion slot.

[0016] As a further improvement of the utility model, the contact system comprises an auxiliary contact assembly, the auxiliary contact assembly comprises a normally-open auxiliary contact group and a normally-closed auxiliary contact group; the normally-open auxiliary contact group and the normally-closed auxiliary contact group are arranged on the rod core and switch the communication state when the moving iron core acts.

[0017] As a further improvement of the utility model, the auxiliary contact assembly is arranged outside the main contact assembly, the rod core is provided with a partition plate between different main contact assemblies and between the main contact assembly and the auxiliary contact assembly; the normally-open auxiliary contact group is arranged above the normally-closed auxiliary contact group, and the rod core is provided with a stopper between the normally-open auxiliary contact group and the normally-closed auxiliary contact group.

[0018] The utility model discloses an advantageous effect is, set up control circuit board, the current type that can output needs after control circuit board, drive movable iron core reliable action, realize the on -off of contact system, make the utility model discloses product can adapt to the system of different type current, product structure is simple, and the adaptation range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0019] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structure schematic drawing of the utility model embodiment.

[0020] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the explosion structure schematic drawing of the utility model embodiment.

[0021] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the explosion structure schematic drawing of the utility model embodiment.

[0022] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the explosion structure schematic drawing of the utility model embodiment.

[0023] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is the structure schematic drawing of the utility model embodiment pole core.

[0024] BRIEF DESCRIPTION OF DRAWINGS Figure 6 It is the structure schematic drawing of the utility model embodiment base.

[0025] In the drawing, 1, base, 11, first accommodating cavity, 12, second accommodating cavity, 13, limit groove, 14, slot, 2, base, 3, pole core, 31, baffle, 32, stopper, 4, contact system, 41, main contact assembly, 42, auxiliary contact assembly, 421, normally open auxiliary contact group, 422, normally closed auxiliary contact group, 5, electromagnetic system, 51, coil holder, 511, limiting portion, 512, notch, 52, movable iron core, 53, static iron core, 531, plug, 532, guide inclined plane, 54, coil, 6, terminal, 7, cover plate, 71, limiting column, 8, control circuit board. DETAILED DESCRIPTION

[0026] The utility model embodiment is further explained in combination with the drawings:

[0027] By Figure 1 In combination Figures 2-6 As shown in the figure, a contactor, including base 1, base 2 and pole core 3, still includes:

[0028] Contact system 4, set up on base 2, the contact system 4 include multiple main contact assembly 41, the main contact assembly 41 set up pole core 3 and by pole core 3 drive its movement makes that circuit on -off;

[0029] An electromagnetic system 5, comprising a coil holder 51, a moving iron core 52 and a static iron core 53, the coil holder 51 is wound with a coil 54, the moving iron core 52 has a first position of being attracted to the static iron core 53 and a second position of being separated from the static iron core 53; the moving iron core 52 is connected with the rod core 3 in linkage;

[0030] A terminal 6 is arranged on the coil holder 51 or the base 2;

[0031] A control circuit board 8 is arranged in the base 1, the control circuit board 8 is connected with the terminal 6 and is used for switching the input current into a direct current or an alternating current for driving the moving iron core 52 to act; the control circuit board 8 is connected with the coil 54 on the coil holder 51 and is used for driving the moving iron core 52 to act and be attracted. The control circuit board is arranged, the required current type can be outputted after passing through the control circuit board, the moving iron core is reliably driven to act, the on-off of the contact system is realized, the product of the utility model can adapt to the systems of different types of currents, the product structure is simple, and the adaptation range is wide. The utility model also has the advantages of simple structure, convenient assembly, reliable action, wide adaptation range and long service life. Specifically, the control circuit board can realize the conversion from direct current to alternating current or from alternating current to direct current by using the existing technology. When the control circuit board is arranged on the contactor, it can adapt to the alternating current system or the direct current system, and different specifications of products can be applied to 24V-60V, 90V-275V systems, i.e. they can work normally in a wide voltage range, so that the adaptation range of the product is wide. The user or the purchaser does not need to judge the use scene when purchasing, and even if more products are purchased, they can also be used in other scenes, i.e. the products have good versatility, so that the adaptation range of the utility model is wide.

[0032] The base 1 is provided with a first accommodating cavity 11 and a second accommodating cavity 12; the coil holder 51 is arranged in the first accommodating cavity 11; and the control circuit board 8 is arranged in the second accommodating cavity 12. The first accommodating cavity and the second accommodating cavity are separated from each other and do not affect each other, only the second accommodating cavity is additionally arranged on the base for assembling the control circuit board, the influence on other parts of the product is small, the parts have high adaptability, and the circuit board arranged in the accommodating cavity does not affect other parts.

[0033] The second accommodating cavity 12 is provided with a limiting groove 13, and the control circuit board 8 is inserted into the limiting groove 13 and is limited by the limiting groove 13. The limiting groove is arranged to limit the control circuit board, so as to avoid the displacement of the control circuit board affecting the circuit connection.

[0034] The utility model also includes the cover plate 7, the cover plate 7 cover is placed on the second accommodating cavity 12 and is used to shield control circuit board 8.

[0035] The static iron core 53 is provided with an insertion block 531, and the base 1 is provided with an insertion groove 14 matched with the insertion block 531.

[0036] The contact system 4 includes an auxiliary contact assembly 42, the auxiliary contact assembly 42 includes a normally open auxiliary contact group 421 and a normally closed auxiliary contact group 422, and the normally open auxiliary contact group 421 and the normally closed auxiliary contact group 422 are arranged on the rod core 3 and switch the communication state when the moving iron core 52 is actuated.

[0037] The auxiliary contact assembly 42 is arranged on the outer side of the main contact assembly 41, the rod core 3 is provided with a partition plate 31 between different main contact assemblies 41 and between the main contact assembly 41 and the auxiliary contact assembly 42, the normally open auxiliary contact group 421 is arranged above the normally closed auxiliary contact group 422, and the rod core 3 is provided with a stop block 32 between the normally open auxiliary contact group 421 and the normally closed auxiliary contact group 422.

[0038] In the description of the utility model, it is necessary to explain that, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the utility model, it is necessary to explain that, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0040] Skilled persons should know: although the utility model has been described according to the above specific embodiments, the utility model idea of the utility model is not limited to this utility model, and any modification using the utility model idea will be included in the utility model patent protection scope.

Claims

1. A contactor comprising a base (1), a pedestal (2) and a stem core (3), characterized in that: Also include: The contact system (4) is provided on the base (2), the contact system (4) includes a plurality of main contact assemblies (41); The main contact assembly (41) is provided on the stem core (3) and is driven by the stem core (3) to make the circuit on-off; The electromagnetic system (5) includes a coil holder (51), a moving iron core (52) and a static iron core (53), the coil (54) is wound on the coil holder (51), the moving iron core (52) has a first position attracted to the static iron core (53) and a second position separated from the static iron core (53); The moving iron core (52) is connected with the stem core (3) in linkage; The terminal (6) is provided on the coil holder (51) or the base (2); The control circuit board (8) is provided in the base (1), the control circuit board (8) is connected with the terminal (6) and is used for switching the input current into direct current or alternating current to drive the moving iron core (52) to act; The control circuit board (8) is connected with the coil (54) on the coil holder (51) and is used for driving the moving iron core (52) to act and attract.

2. A contactor according to claim 1, characterised in that The base (1) is provided with a first accommodating cavity (11) and a second accommodating cavity (12); The coil holder (51) is provided in the first accommodating cavity (11); The control circuit board (8) is provided in the second accommodating cavity (12).

3. A contactor according to claim 2, wherein The second accommodating cavity (12) is provided with a limiting groove (13), the control circuit board (8) is inserted into the limiting groove (13) and is limited by the limiting groove (13).

4. A contactor according to claim 2, wherein It also includes a cover plate (7), the cover plate (7) is covered on the second accommodating cavity (12) and is used for shielding the control circuit board (8).

5. A contactor according to claim 4, wherein The lower surface of the cover plate (7) is provided with a limiting column (71), the limiting column (71) is L-shaped, the L-shaped limiting column (71) is fitted with the inner surface of the second accommodating cavity (12).

6. A contactor according to claim 4, wherein It also includes a limiting part (511) provided on the coil holder (51) or the base (2); The coil holder (51) or the base (2) is matched with the base (1) to form a gap (512), the cover plate (7) is inserted into the gap (512), and the limiting part (511) is provided above the cover plate (7) for vertically limiting the cover plate (7).

7. A contactor according to claim 1, wherein The static iron core (53) is provided with an insertion block (531), and the base (1) is provided with an insertion groove (14) matched with the insertion block (531).

8. A contactor according to claim 7, wherein The insertion block (531) is integrally formed of rubber material, and the insertion block (531) is provided with a guide inclined surface (532) facilitating insertion into the insertion groove (14).

9. A contactor according to claim 1, wherein The contact system (4) includes an auxiliary contact assembly (42), the auxiliary contact assembly (42) includes a normally open auxiliary contact group (421) and a normally closed auxiliary contact group (422); The normally open auxiliary contact group (421) and the normally closed auxiliary contact group (422) are provided on the stem core (3) and switch the communication condition when the moving iron core (52) acts.

10. A contactor according to claim 9, wherein The auxiliary contact assembly (42) is arranged outside the main contact assembly (41), the rod core (3) is provided with a partition plate (31) between different main contact assemblies (41) and between the main contact assembly (41) and the auxiliary contact assembly (42); the normally open auxiliary contact group (421) is arranged above the normally closed auxiliary contact group (422), and the rod core (3) is provided with a stop block (32) between the normally open auxiliary contact group (421) and the normally closed auxiliary contact group (422).

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