CN2653680Y

CN2653680Y - AC contactor

Info

Publication number: CN2653680Y
Application number: CN 200320106296
Authority: CN
Inventors: 田新疆; 李芃
Original assignee: Xiamen Hongmei Electronic Co ltd
Current assignee: Xiamen Hongmei Electronic Co ltd
Priority date: 2003-10-17
Filing date: 2003-10-17
Publication date: 2004-11-03
Anticipated expiration: 2013-10-17

Abstract

The utility model relates to an AC contactor, which comprises a top cover, a pedestal and a motherboard. The inside of the pedestal is provided with an E shaped gag bit and an E shaped yoke iron in a face to face manner, and the E shaped gag bit is fixedly connected with a contact bracket, and a bridge shaped moveable contact is elastically connected on the contact bracket. The pedestal is fixedly provided with a stationary contact, and the outside of the pedestal is provided with an external connecting end connected with the stationary contact. A loop supporting bracket is sleeved on the protruding part of the middle of the E shaped yoke iron, and a short circuit ring is positioned on the end face of protruding part on two ends. The loop supporting bracket is winded with the loop, and two ends of the loop are provided with a control end extending to the outside of the pedestal in a protruded manner. A counterforce spring is arranged between the loop supporting bracket and the E shaped gag bit. The loop supporting bracket and the touching surface of the E shaped yoke iron are provided with a plurality of cross bar-shaped or stellate-shaped protuberances. The motherboard and the touching part of the E shaped yoke iron form an elastic mechanism tightly protruding upwards in a hollowed manner.

Description

A kind of A.C. contactor

Technical field

The utility model relates to a kind of parts that are used for electrical load control, particularly a kind of A.C. contactor that is used for the heavy duty electrical control.

Background technology

A.C. contactor is mainly used in the important power control member of control alternating current machine start-stop and other electrical load break-make, the basic principle of existing A.C. contactor is: comprise pedestal, top cover, base plate, relative E shape armature of direction and E shape yoke are installed in pedestal, be provided with reaction spring between E shape armature and the E shape yoke, be fixedly connected with contact supporting on the E shape armature, be elasticly connected with bridge shape moving contact on the contact supporting, pedestal is provided with and the corresponding a pair of fixed contact of bridge shape moving contact, and fixed contact links to each other with external connection end, is arranged with coil on the projection in the middle of E shape yoke, coil links to each other with control end, during use, external connection end inserts motor circuit, control end access control circuit, when coil electricity, E shape armature and E shape yoke be adhesive mutually under magneticaction, and bridge-shaped contact is communicated with a pair of fixed contact, constitutes path, make electric motor starting, on the contrary, coil blackout is under the effect of reaction spring, bridge-shaped contact and fixed contact separate, and the motor outage stops.According to different needs, A.C. contactor can be provided with one to three bridge shape moving contact and corresponding three pairs of fixed contacts, for use in load motor or three phase alternating current motor and other electrical load.

Mainly there is following shortcoming in existing A.C. contactor:

At first, because E shape yoke does not have buffer structure, when E shape yoke and the mutual adhesive of E shape armature, meeting produces collision and vibrates, thereby can drive contact vibration and produce the contact secondary rebound starting the arc, causing the product loss of function, the employing rubber parts that has is as buffer unit, yet General Purpose Rubber spare wears out easily and follows the string, thereby loses the function of buffering vibration;

Secondly, connect by screw usually between top cover, base plate and the pedestal of existing A.C. contactor, thereby cause the inconvenience of assembling when producing;

The 3rd, the top, protruding end of the E shape yoke both sides of existing A.C. contactor is arranged with short-circuited conducting sleeve usually, to eliminate unnecessary noise, because E shape yoke and the regular collision of E shape armature, and cause this short-circuited conducting sleeve to be subjected to vibratory impulse regularly, on four angles of this short-circuited conducting sleeve, be prone to fracture, make it send huge noise, even lose due function;

The 4th, in order to realize interlock control, be typically provided with AUI on the contact supporting, be used for the mechanically external attached module that helps of interlock control, corresponding with it, need be provided with opening on the sidewall of pedestal, and this opening need have a length, holding external piece, and makes external piece that movable space can be arranged, this opening makes introduced contaminants that the chance of the base interior of entering be arranged, thereby influences the operate as normal of contactor.

The utility model content

The utility model provides a kind of A.C. contactor, and its main purpose is to overcome existing A.C. contactor owing to adopt rubber parts as the parts that reduce to vibrate, thereby easily aging and lose vibration-damping function and be directed at the defective that A.C. contactor damages.

Two of the purpose of this utility model is to overcome between existing A.C. contactor pedestal and a lid, the base plate owing to adopt screw to be connected and fixed, thereby the defective that comparatively bothers of assembling process.

Three of the purpose of this utility model is to overcome the defective of the short-circuited conducting sleeve of existing A.C. contactor at four corner easy fractures.

Four of the purpose of this utility model is to overcome existing A.C. contactor easily enters in the pedestal introduced contaminants owing to being provided with annex interlock interface, thereby influences the defective of its operate as normal.

In order to achieve the above object, the utility model adopts following technical scheme: comprise top cover, pedestal, base plate, top cover is located at pedestal top, base plate is located at the pedestal bottom, be provided with relative E shape armature and E shape yoke in the pedestal, be fixedly connected with contact supporting on the E shape armature, be elasticly connected with one to three bridge shape moving contact on the contact supporting, be installed with bridge shape moving contact corresponding a pair of on the pedestal to three pairs of fixed contacts, the pedestal outside is provided be connected with fixed contact a pair of to three pairs of external connection end, in the middle of E shape yoke, be arranged with the coil support frame on the projection, two ends protuberance end face is arranged with short-circuited conducting sleeve, be arranged with coil on the coil support frame, the two ends of coil are provided with the control end that convexedly stretches in the pedestal outside, be provided with reaction spring between coil support frame and the E shape armature, the contact-making surface of coil support frame and E shape yoke is provided with the projection of some " " shapes or " Off type ", and the contact-making surface part hollow out of base plate and E shape yoke forms an elastic construction that slightly raises up.

Described top cover edge is provided with the hook-shaped snap close piece of some downward extensions, and the pedestal sidewall is provided with the catching groove that matches with this hook-shaped snap close piece near the place, top.

Described pedestal both sides the latter half is arranged with left plate and right plate, is respectively equipped with the clamping part that inwardly protrudes out on left plate and the right plate, and E shape yoke is held between two clamping parts.

Described bottom edge is provided with some fasteners, and the pedestal lower sidewall is provided with snapping with matching portion.

The sectional area in short-circuited conducting sleeve four bights is greater than the sectional area of other parts.

Be provided with annex interlock interface with pedestal sidewall contact position on the contact supporting, pedestal sidewall and this interlock socket contact position are provided with the strip through hole, and the width of annex interlock interface both sides of the edge is enough to make its this edge when strip through hole length direction moves can hide the remainder of strip through hole.

By above-mentioned description to the utility model structure as can be known, compare with prior art, the utlity model has following advantage: at first, the elastic construction that the contact-making surface part hollow out of the utility model by " " shape on the contact-making surface of coil support frame and E shape yoke or " Off type " projection and base plate and E shape yoke forms cooperates and carries out vibration reduction and cushioning, adopts rubber parts reliable and durable more as damping means than in the past; Secondly, adopt the snapping mode to connect between the utility model top cover, base plate and the pedestal, assemble simply just, without any need for instrument; The 3rd, short-circuited conducting sleeve of the present utility model is owing to have reinforcement in four corners, thereby than in the past short-circuited conducting sleeve easy fracture more not; The 4th, the utility model has better seal than product in the past, more is not subject to the influence of impurity such as extraneous dust.

Description of drawings

Fig. 1 is the three-dimensional explosive view of the utility model;

Fig. 2 is the three-dimensional explosive view of the utility model electromagnet portion.

Specific embodiment

A specific embodiment of the present utility model, see figures.1.and.2, this A.C. contactor mainly comprises housing parts, contact part, electromagnet portion, wherein housing parts comprises pedestal 1, top cover 2, base plate 3, left plate 91 and right plate 92, both sides of the edge, top cover 2 front and back are provided with and respectively are provided with two hook-shaped snap close pieces 21 that extend downwards, two side, pedestal 1 front and back is provided with the catching groove 11 that matches with aforementioned hook-shaped snap close piece 21 near the place, top, and top cover 2 is fixedlyed connected with cooperating of catching groove 11 by hook-shaped snap close piece 21 with pedestal 1; The both sides of the edge, front and back of base plate 3 are respectively equipped with two upwardly extending fasteners 32, bottom, two side, pedestal 1 front and back is provided with snapping with matching portion 12, in addition, the both sides, front and back of base plate also respectively are provided with one and outwards protrude out ear 331, this ear 331 is provided with through hole 332, through hole 332 outer side edges are provided with two protuberances 33 that inwardly protrude out, pedestal sidewall corresponding position is provided with the Plug Division 132 that protrudes out downwards, this Plug Division 132 is matched with in the through hole 332, this Plug Division 132 is provided with two hole clippings 13, and hole clipping 13 matches with protuberance 33; The strip projection 910 of left plate 91 and right plate 92 sides is matched with in the strip groove 10 of corresponding site on the pedestal 1, thereby left plate 91 and right plate 92 are sticked between pedestal 1 left and right sides Lower Half and the base plate 3.Hence one can see that, and the assembling of above-mentioned housing parts need not to use screw and connects, thereby need not any instrument during assembling.

Base plate 3 middle parts are engraved and are formed an elastic construction that raises up slightly 31, and the inboard of left plate 91 and right plate 92 is respectively equipped with the clamping part 911,921 that inwardly protrudes out.

The electromagnet portion of this A.C. contactor comprises E shape armature 41, coil support frame 70, coil 7, reaction spring 5 and E shape yoke 42.The back of E shape yoke 42 relies on the elastic construction 31 at base plate 3 middle parts, and its both sides then are held between the

clamping part

911 and 921 of left plate 91, right plate 92.E shape armature 41 is positioned at E shape yoke 42 tops and relative with E shape armature 42 directions, coil support frame 70 is sheathed on the projection at E shape yoke 42 middle parts, coil 7 is set around on the coil support frame 70, coil 7 is provided with

external control end

71,72, this

control end

71,72 is arranged between right plate 92 and the pedestal 1, and convexedly stretches in pedestal 1 outside.Be respectively equipped with two " " shape projectioies 701 on the contact-making surface between two recesses of coil support frame 70 bottoms and yoke 42, the vibration that electromagnetic system is subjected to mainly cushions by the elastic construction 31 that is somebody's turn to do " " shape projection 701 and base plate 3 middle parts.5 of reaction springs are located between coil support frame 70 tops and the E shape armature.

Contact partly comprises contact supporting 6, three bridge shape moving contacts 61, three pairs of fixed contacts 610, contact supporting 6 is fixedly connected on E shape armature 41 tops, three bridge shape moving contact 61 elasticity are connected in contact supporting 6 middle parts, the three pairs of fixed contacts 610 and three bridge shape moving contacts, the 61 corresponding relevant positions that are arranged at pedestal 1, simultaneously, pedestal 1 appearance both sides also are provided with three pairs of external connection end 611, and these three pairs of external connection end 611 and three pairs of fixed contacts 610 connect one to one.

Contact supporting 6 is provided with annex interlock interface 62 with pedestal 1 sidewall contact-making surface, pedestal 1 sidewall corresponding section with it is provided with a strip through hole 14, these annex interlock interface 62 both sides of the edge 621 and 622 width are enough big, so that when annex interlock interface 62 being moved up and down in strip through hole 14 when contact supporting 6 knee-actions, the remainder of strip through hole 14 can be blocked in its both sides of the edge 621 and 622, and does not allow impurity enter A.C. contactor inside.

E shape yoke two ends protuberance end face is arranged with short-circuited conducting sleeve 8, and the sectional area in 8 four bights of short-circuited conducting sleeve is greater than the sectional area of other parts.

Above-mentioned only is a specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, be easy to conceive and change a little with this, as " " shape projection 701 being changed into the projection of " Off type ", or its quantity changed, or the number of change contact, these conspicuous changes should all belong within the design concept scope of the present utility model.

Claims

1, a kind of A.C. contactor, comprise top cover, pedestal, base plate, top cover is located at pedestal top, base plate is located at the pedestal bottom, be provided with relative E shape armature and E shape yoke in the pedestal, be fixedly connected with contact supporting on the E shape armature, be elasticly connected with one to three bridge shape moving contact on the contact supporting, be installed with bridge shape moving contact corresponding a pair of on the pedestal to three pairs of fixed contacts, the pedestal outside is provided be connected with fixed contact a pair of to three pairs of external connection end, in the middle of E shape yoke, be arranged with the coil support frame on the projection, two ends protuberance end face is arranged with short-circuited conducting sleeve, be arranged with coil on the coil support frame, the two ends of coil are provided with the control end that convexedly stretches in the pedestal outside, be provided with reaction spring between coil support frame and the E shape armature, it is characterized in that: the contact-making surface of coil support frame and E shape yoke is provided with the projection of some " factory " shapes or " Off type ", and the contact-making surface part hollow out of base plate and E shape yoke forms an elastic construction that slightly raises up.

2, a kind of A.C. contactor as claimed in claim 1 is characterized in that: described top cover edge is provided with the hook-shaped snap close piece of some downward extensions, and the pedestal sidewall is provided with the catching groove that matches with this hook-shaped snap close piece near the place, top.

3, a kind of A.C. contactor as claimed in claim 1 is characterized in that: described pedestal both sides the latter half is arranged with left plate and right plate, is respectively equipped with the clamping part that inwardly protrudes out on left plate and the right plate, and E shape yoke is held between two clamping parts.

4, a kind of A.C. contactor as claimed in claim 1, it is characterized in that: described bottom edge is provided with some fasteners, and the pedestal lower sidewall is provided with snapping with matching portion.

5, a kind of A.C. contactor as claimed in claim 1 is characterized in that: the sectional area in short-circuited conducting sleeve four bights is greater than the sectional area of other parts.

6, a kind of A.C. contactor as claimed in claim 1, it is characterized in that: be provided with annex interlock interface with pedestal sidewall contact position on the contact supporting, pedestal sidewall and this interlock socket contact position are provided with the strip through hole, and the width of annex interlock interface both sides of the edge is enough to make its this edge when strip through hole length direction moves can hide the remainder of strip through hole.