CN212342564U

CN212342564U - Novel double-coil structure of control and protection switch

Info

Publication number: CN212342564U
Application number: CN202021801354.3U
Authority: CN
Inventors: 龚叶; 刘凯; 潘儒凯
Original assignee: Nanjing Apaitek Technology Co ltd
Current assignee: Nanjing Apaitek Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-01-12
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a novel twin coil structure of control and protection switch, including manual switch, start coil, micro-gap switch, holding coil and electro-magnet, holding coil and start coil series connection, micro-gap switch and holding coil parallel connection, start coil and holding coil's inner circle is provided with the electro-magnet, manual switch is still including setting up the knob in outside, micro-gap switch carries out magnetism swing joint with the electro-magnet, the beneficial effects of the utility model: the power consumption is reduced, the energy-saving effect is realized, and meanwhile, due to the reduction of the power consumption, the problems that the contactor generates heat, the working noise is easy to generate, the shaking is easy to occur and the like are solved.

Description

Novel double-coil structure of control and protection switch

Technical Field

The utility model relates to a leakage protection switch technical field specifically is a novel twin coil structure of control and protection switch.

Background

In order to prevent accidents caused by electric leakage, an electric leakage protection function is often added on the protection switch. The current leakage protection switch is usually realized by a support, a circuit board, a reset button, a reset spring, a driving mechanism, a trip coil and a movable frame, when the leakage current occurs in the circuit, the circuit board receives the leakage signal of the circuit and enables the trip coil to be electrified, so that a movable iron core is driven to act, the movable frame is reset, and simultaneously, a movable contact and a static contact are separated, so that the circuit is in a breaking state. The static contact of the leakage protection switch is arranged on the support, the movable contact is arranged on the movable frame, and in order to enable the static contact and the movable contact to achieve opening and closing actions, the leakage protection switch needs to be abducted structurally, so that the integral volume of the leakage protection switch is directly large.

The leakage protection switch has two working modes, one mode is that a tripping coil is not electrified under the working condition of the switch, and when leakage current occurs, the tripping coil is electrified to drive a movable iron core to act so as to separate movable and static contacts, so that the leakage protection switch is called as a passive structure leakage protection switch; the other is the leakage protection switch with an active structure, wherein a tripping coil is electrified under the working condition of the switch, and when leakage current occurs, the tripping coil is electrified to drive a movable iron core to act, so that movable and static contacts are separated.

The existing leakage protection switch with an active structure has large starting power due to the attraction of an iron core, and always maintains high power consumption after the attraction, and causes the problems of heating of a contactor, generation of working noise, easy occurrence of jitter and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel twin coil structure of control and protection switch to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel twin coil structure of control and protection switch, includes hand switch, start coil, micro-gap switch, holding coil and electro-magnet, holding coil and start coil series connection, micro-gap switch and holding coil parallel connection, the inner circle of start coil and holding coil is provided with the electro-magnet, hand switch is still including setting up the knob outside, micro-gap switch carries out magnetism swing joint with the electro-magnet.

As a further aspect of the present invention: the holding coil is wound on the outer layer of the starting coil, namely the holding coil and the starting coil are arranged in a structure of a Chinese character 'hui'.

As a further aspect of the present invention: the starting coil is provided with a plurality of turns, and the sectional area of a wire forming the starting coil is larger than that of a wire forming the holding coil.

As a further aspect of the present invention: the manual switch and the micro switch are switches in a single-pole single-gate mode.

As a further aspect of the present invention: the electromagnet is in a structure like a Chinese character ri, and the holding coil and the starting coil penetrate through the electromagnet.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the power consumption is reduced, and the energy-saving effect is realized;

2. due to the reduction of power consumption, the problems that the contactor generates heat, easily generates working noise, easily shakes and the like are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the circuit structure of the present invention;

fig. 3 is a schematic diagram of the coil and the electromagnet of the present invention.

In the figure: 1 manual switch, 2 start coil, 3 micro-switch, 4 keep coil, 5 electro-magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in an embodiment of the present invention, a novel dual-coil structure of a control and protection switch includes a manual switch (1), a start coil (2), a micro switch (3), a hold coil (4) and an electromagnet (5), where the hold coil (4) and the start coil (2) are connected in series, the micro switch (3) and the hold coil (4) are connected in parallel, the hold coil (4) is wound on an outer layer of the start coil (2), that is, the hold coil (4) and the start coil (2) are arranged in a "return" shape, inner rings of the start coil (2) and the hold coil (4) are provided with the electromagnet (5), the start coil (2) is provided with a plurality of turns, and a cross-sectional area of a wire constituting the start coil (2) is larger than a cross-sectional area of a wire constituting the hold coil (4), the manual switch (1) further includes an externally disposed knob, the magnetic switch is characterized in that the microswitch (3) is magnetically and movably connected with the electromagnet (5), the manual switch (1) and the microswitch are switches in a single-pole single-gate mode, the electromagnet (5) is in a structure like a Chinese character 'ri', and the holding coil (4) and the starting coil (2) penetrate through the electromagnet.

Example (b):

when the electromagnet 5 starts to move, only the starting coil 2 is connected into a circuit, the left holding coil 4 is in short circuit connection with the normally closed auxiliary contact micro switch 3, and the starting coil 2 is large in number of turns and large in wire sectional area, so that the resistance of the coil is small, and large electromagnetic attraction can be generated to attract the electromagnet 5 to move against the spring counter force. When the electromagnet 5 moves to a set position, the normally closed auxiliary contact micro switch 3 is switched off, the left holding coil 4 is connected into a circuit, and the two coils are connected in series for operation; because the keeping coil 4 and the pull-in coil run simultaneously, the number of turns is large, the resistance of the coil is large, the current in the circuit is small, and the power loss can be effectively reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel twin coil structure of control and protection switch, includes hand switch (1), start coil (2), micro-gap switch (3), hold coil (4) and electro-magnet (5), its characterized in that: the manual switch is characterized in that the holding coil (4) and the starting coil (2) are connected in series, the micro switch (3) is connected with the holding coil (4) in parallel, the electromagnets (5) are arranged on the inner rings of the starting coil (2) and the holding coil (4), the manual switch (1) further comprises a knob arranged outside, and the micro switch (3) is in magnetic movable connection with the electromagnets (5).

2. The novel double-coil structure of the control and protection switch as claimed in claim 1, wherein: the holding coil (4) is wound on the outer layer of the starting coil (2), namely the holding coil (4) and the starting coil (2) are arranged in a structure in a shape like a Chinese character 'hui'.

3. The novel double-coil structure of the control and protection switch as claimed in claim 1, wherein: the starting coil (2) is provided with a plurality of turns, and the sectional area of a lead forming the starting coil (2) is larger than that of a lead forming the holding coil (4).

4. The novel double-coil structure of the control and protection switch as claimed in claim 1, wherein: the manual switch (1) and the micro switch are switches in a single-pole single-gate mode.

5. The novel double-coil structure of the control and protection switch as claimed in claim 1, wherein: the electromagnet (5) is of a structure like a Chinese character 'ri', and the holding coil (4) and the starting coil (2) penetrate through the electromagnet.