CN101976635A

CN101976635A - Reversing contactor

Info

Publication number: CN101976635A
Application number: CN 201010290565
Authority: CN
Inventors: 戴丁志
Original assignee: Individual
Current assignee: Ruian Wisdom Electric Appliance Co Ltd
Priority date: 2010-09-19
Filing date: 2010-09-19
Publication date: 2011-02-16
Anticipated expiration: 2030-09-19
Also published as: CN101976635B

Abstract

The invention discloses a reversing contactor, which is composed of an electromagnetic construction member, a movable contact bridge construction member (8), an upper contact bridge (10), a lower contact bridge (11), a curve contact bridge (12), a curved bridge stud (13), a reset spring (15) and a shell (9), wherein, the electromagnetic construction member comprises an iron core (1), a coil (2) and a lower magnet conducting plate (3), wherein, a magnet conducting outer ring (4) is arranged at the periphery of the coil (1); the magnet conducting outer ring (4) and the lower magnet conducting plate (3) surround the coil (2) and the iron core (1) in a U-shaped square manner; and an upper magnet conducting plate (5) is arranged above the coil (1). The upper magnet conducting plate, the magnet conducting outer ring and the lower magnet conducting plate wholly encase the coil and the iron core in a full surround type, so as to lead the coil and the iron core to have less leaked magnetism quantity and less magnetic loss when in operation, thereby improving the utilization of the electromagnetism, and promoting the quality of the product.

Description

Directional contactor

Technical field

The present invention relates to a kind of be used for to electric current commutate control directional contactor.

Background technology

At present, directional contactor is a kind of electric equipment products, it is made up of electromagnetic component, movable contact bridge member, last contact bridge, following contact bridge, curve contact bridge, curved bridge double-screw bolt, return spring, housing etc., wherein electromagnetic component comprises iron core, coil, magnetic conduction support and following magnetic conductive board, the magnetic conduction support reaches down, and magnetic conductive board encases coil and iron core with the semi-surrounding formula, cause the leakage field phenomenon to take place, magnetic loss is big, the electromagnetism utilance is lower, thereby has influenced the use of electric equipment products.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, and the directional contactor that a kind of magnetic loss is less, the electromagnetism utilance is high is provided.

Purpose of the present invention realizes by following technical solution: a kind of directional contactor, form by electromagnetic component, movable contact bridge member, last contact bridge, following contact bridge, curve contact bridge, curved bridge double-screw bolt, return spring, housing, wherein electromagnetic component comprises iron core, coil and following magnetic conductive board, be peripherally equipped with the magnetic conduction outer ring at described coil, magnetic conductive board surrounded coil and iron core with " U " shape block form under the magnetic conduction outer ring reached, and above coil upper conduction magnetic board was housed also.

After adopting the present invention, magnetic conductive board encases coil and iron core with full encirclement formula integral body because upper conduction magnetic board, magnetic conduction outer ring reach down, and magnetic flux leakage is little when making coil, iron core work, and magnetic loss is also less, thereby improved the electromagnetism utilance, the quality of product is improved.

Description of drawings

The present invention is described in further detail below in conjunction with accompanying drawing and execution mode.

Fig. 1 is the structural representation of directional contactor of the present invention.

Fig. 2 is the profile schematic diagram of directional contactor of the present invention.

Fig. 3 is the profile schematic diagram of electromagnetic component among Fig. 1.

Fig. 4 is the structural representation of movable contact bridge member among Fig. 1.

Embodiment

Referring to figs. 1 through Fig. 3 as can be known, directional contactor of the present invention, by electromagnetic component (being two covers), movable contact bridge member 8 (being two covers), last contact bridge 10, following contact bridge 11, curve contact bridge 12 (being two covers), curved bridge double-screw bolt 13 (and nut 14, be quadruplet), return spring 15 (is two covers, with the corresponding installation of movable contact bridge member), housing 9 is formed, wherein electromagnetic component comprises iron core 1, coil 2 and following magnetic conductive board 3, be peripherally equipped with magnetic conduction outer ring 4 at described coil 1, magnetic conductive board 3 surrounded coil 2 and iron core 1 (as shown in Figure 1) with " U " shape block form under magnetic conduction outer ring 4 reached, and above coil 1 upper conduction magnetic board 5 was housed also.

Wherein, coil 2 is contained in the coil rack 6; Described iron core 1, coil 2, following magnetic conductive board 3, magnetic conduction outer ring 4, upper conduction magnetic board 5, coil rack 6 are formed electromagnetic components, are two covers.As Fig. 1, shown in Figure 3, magnetic conductive board encased coil and iron core with full encirclement formula integral body under upper conduction magnetic board, magnetic conduction outer ring reached.This directional contactor is applied to electronic capstan, winch, fork truck or automobile etc. to be needed to use with the forward and reverse big electric current commutation of the high-power control of big electric current.

As Fig. 1, shown in Figure 4, described movable contact bridge member 8 comprises push rod 21, contact bridge 22 (is a metal material, contact bridge in the middle of also can claiming), overtravel reed 28 and spring base 23, described push rod 21 is a metal material, metal sleeve 24 and insulating sleeve 25 are housed between this push rod 21 and the contact bridge 22 successively, described insulating sleeve 25 contacts with contact bridge 22, the longitudinal surface of described metal sleeve 24 contacts (should leave very small space between the longitudinal surface of metal sleeve and the push rod) at interval with push rod 21, is separated by by mica spacer 26 (insulation) between the athwartship plane of metal sleeve 24 and the contact bridge 22.

Wherein, push rod 21 is located at the middle part of contact bridge 22, and spring base 23 is contained in the afterbody of push rod 21, and return spring 15 withstands on the spring base 23, and overtravel reed 28 is contained in the peripheral of push rod 21 and withstands on the metal sleeve 24; Also metallic gasket 27 can be housed between the athwartship plane of described metal sleeve 24 and the mica spacer 26, to increase tightness and firmness; The head of the push rod 21 of described movable contact bridge member is an evagination cone-shaped 29, and the iron core 1 of described electromagnetic component has the indent cone tank 7 that contacts, matches with the evagination cone-shaped 29 of push rod 21 heads, to increase the stability and the degree of balance of pushrod movement; Described insulating sleeve 25 is mica, poly-tetrafluoro, glass fibre or ceramic insulation tubing, and its lasting 1-2 minute high temperature resistant reaches 300-450 ℃, and moment is high temperature resistant to reach 600-700 ℃, wherein with ceramic insulation tubing best results.

As shown in Figure 1, during the work of this directional contactor, coil is put iron core on the spot and is produced magnetic field, and the electromagnetic component in left side drives the movable contact bridge member in left side with magnetic force push rod rises, and the two ends that make its contact bridge contact with the curve contact bridge top in left side, the left side of going up contact bridge respectively; Simultaneously, the electromagnetic component on right side promotes the movable contact bridge member on right side with magnetic force push rod descends, and the two ends of its contact bridge are contacted with the curve contact bridge bottom on right side, the right side of following contact bridge respectively.Perhaps, on the contrary above-mentioned work, and the two ends of the contact bridge on the left of making contact with the curve contact bridge bottom in left side, the left side of following contact bridge respectively; The two ends of the contact bridge on right side are contacted with the curve contact bridge top on right side, the right side of last contact bridge respectively.Thereby realize the commutation function (just change or reverse) of electric current.

Claims

1. directional contactor, form by electromagnetic component, movable contact bridge member (8), last contact bridge (10), following contact bridge (11), curve contact bridge (12), curved bridge double-screw bolt (13), return spring (15), housing (9), wherein electromagnetic component comprises iron core (1), coil (2) and following magnetic conductive board (3), it is characterized in that: be peripherally equipped with magnetic conduction outer ring (4) at described coil (1), magnetic conductive board (3) surrounded coil (2) and iron core (1) with " U " shape block form under magnetic conduction outer ring (4) reached, and in the top of coil (1) upper conduction magnetic board (5) was housed also.

2. directional contactor according to claim 1, it is characterized in that: described movable contact bridge member (8) comprises push rod (21), contact bridge (22), overtravel reed (28) and spring base (23), described push rod (21) is a metal material, metal sleeve (24) and insulating sleeve (25) are housed between this push rod (21) and the contact bridge (22) successively, described insulating sleeve (25) contacts with contact bridge (22), the longitudinal surface of described metal sleeve (24) contacts at interval with push rod (21), is separated by by mica spacer (26) between the athwartship plane of metal sleeve (24) and the contact bridge (22).

3. directional contactor according to claim 2 is characterized in that: between the athwartship plane of described metal sleeve (24) and the mica spacer (26) metallic gasket (27) is housed also.

4. according to claim 2 or 3 described directional contactors, it is characterized in that: the head of the push rod of described movable contact bridge member (21) is evagination cone-shaped (29), and the iron core of described electromagnetic component (1) has the indent cone tank (7) that contacts, matches with the evagination cone-shaped of push rod (21) head.

5. according to claim 2 or 3 described directional contactors, it is characterized in that: described insulating sleeve (25) is mica, poly-tetrafluoro, glass fibre or ceramic insulation tubing, its lasting 1-2 minute high temperature resistant 300-450 ℃, high temperature resistant 600-700 of moment ℃.