CN2924770Y

CN2924770Y - Electronic overload relay with boat-shape movable support for electromagnetic on-off mechanism

Info

Publication number: CN2924770Y
Application number: CN 200620026794
Authority: CN
Inventors: 梁燕; 高云旭; 徐景行; 宋玉霞; 段凤荣
Original assignee: Tianjin Baili Electronic Co Ltd
Current assignee: Tianjin Baili Electronic Co Ltd
Priority date: 2006-07-21
Filing date: 2006-07-21
Publication date: 2007-07-18
Anticipated expiration: 2016-07-21

Abstract

The utility model relates to an electromagnetic close and break mechanism of electronic overload relay which is provided with a boat-shaped movable frame. The utility model includes an electromagnetic close and break mechanism; the electromagnetic close and break mechanism includes a movable frame, the lower part of which takes the shape of a boat and permanent magnets; the bow and stern of the movable frame, the lower part of which takes the shape of a boat, are respectively provided with the permanent magnets. As the both ends of the lower part of the movable frame are respectively provided with permanent magnets, the magnetic field of the permanent magnets can interact with the generated magnetic field of the coils of the static part of the electromagnetic system through the current to impel the frame for rotation, thus to open the normally closed contact and close the normally opened contact, further to make the electromagnetic close and break mechanism of electronic overload relay have accurate movements, stable and reliable performances. In addition, due to the simple structure and easy processing, the utility model also reduces the costs.

Description

Electromagnetism closes the electronic overload relay that sub-agencies has the ship shape travel(l)ing rest

Affiliated technical field

The utility model belongs to relay, particularly relates to a kind of electromagnetism and closes the electronic overload relay that sub-agencies has the ship shape travel(l)ing rest.

Background technology

Except housing, it mainly comprises 3 parts at present known electronic overload relay: the one, and the induction by current mechanism part that lead and current transformer as load circuit part are assembled in base; The 2nd, the electromagnetism that fixed contact, moving contact, travel(l)ing rest, spring, magnet, magnetic machine and coil are housed is closed sub-agencies part actuating mechanism part just, and place above the induction by current mechanism; The 3rd, electronic circuit board.The structure that electromagnetism closes a kind of employing in the sub-agencies prior art is that the lower end of its travel(l)ing rest is a ship shape,, and two magnetic conductive board hot pressing is fixed on the travel(l)ing rest partly for the middle part with two magnetic conductive boards is gripped with permanent magnet in the ship shape of travel(l)ing rest.Below this travel(l)ing rest, install the static part of the electromagnetic system that synthesizes by yoke and coil groups, with the moving contact realizing that the magnetic field interaction that two magnetic conductive board end magnetic fields and electric current produce when flowing through electromagnetic system static part coil promotes the travel(l)ing rest action, further make being fixed on this travel(l)ing rest with to be fixed on fixed contact on the housing closed or open.Because the such structure of work in-process need be fixed on two magnetic conductive boards and the suitable back hot repressing of relative position allotment of placing permanent magnet the bottom of travel(l)ing rest, so its manufacturing process difficulty is relatively big, cost is than higher, and the volume of travel(l)ing rest is also big, also more complicated of structure, and the magnetic field that produces of the coil of electromagnetic system static part will by magnetic conductive board indirectly with the permanent magnet interaction.

Summary of the invention

The technical problem that exists in the known technology provides a kind of difficulty of manufacturing process smaller to the utility model in order to solve, the magnetic field of the coil generation of electromagnetism that system static part is direct and the interactional electromagnetism of permanent magnet closes the electronic overload relay that sub-agencies has the ship shape travel(l)ing rest.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: it includes electromagnetism and closes sub-agencies, described electromagnetism closes and includes travel(l)ing rest and the permanent magnet that the bottom is a ship shape in the sub-agencies, in the bottom be ship shape travel(l)ing rest the forward andor aft two ends respectively device described permanent magnet is arranged.

Advantage and the good effect that the utlity model has are: owing to adopt permanent magnet is equipped with at two ends, described travel(l)ing rest bottom respectively; Make that the magnetic field of permanent magnet can be directly and the magnetic field interaction that produces by electric current of the coil of electromagnetic system static part, promoting travel(l)ing rest rotates, make that normally-closed contact is opened, the normally opened contact closure, thereby it is accurate, stable and reliable for performance to make that the electromagnetism of electronic overload relay closes the sub-agencies action; And, also reduced cost because it is simple in structure, easy to process.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the travel(l)ing rest structural representation among Fig. 1;

Fig. 3 is the A-A profile of Fig. 2.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1, Fig. 2, fixed head 7 horizontal hot pressing are installed on the centre that the bottom is travel(l)ing rest 1 bottom of ship shape; Two blocks of permanent magnets 5 are installed in the two ends that the bottom is ship shape travel(l)ing rest 1 bottom respectively, and the both ends of the surface of fixed head 7 are joined with the permanent magnet 5 at two ends respectively.Again spring 4 and moving contact 3 are sleeved on the cylinder of travel(l)ing rest 1 lower protrusion.And fixed contact 2 is fixed on the pedestal 8.The yoke 6 that is with actuation coil is below travel(l)ing rest 1.Permanent magnet 5 be placed in travel(l)ing rest 1 bottom two ends and with the orthogonal lateral aperture of ship shape texture edge in.

As shown in Figure 3, in the centre of travel(l)ing rest 1 bottom ship shape structure, hot pressing has fixed head 7.

Also can adopt permanent magnet 5 is placed in the hole that the two ends end face of ship shape structure is provided with, promptly the end face by two ends inserts.

When the coil electricity on the yoke 6 that is enclosed within the electromagnetic system static part, the magnetic field that 6 two ends of yoke produce and the magnetic field interaction of the permanent magnet 5 on the travel(l)

ing rest

1,1 of travel(l)ing rest is around structural axis hole 9 rotations of bottom ship shape.

Claims

1. an electromagnetism closes the electronic overload relay that sub-agencies has the ship shape travel(l)ing rest, it includes electromagnetism and closes sub-agencies, described electromagnetism closes and includes travel(l)ing rest and the permanent magnet that the bottom is a ship shape in the sub-agencies, it is characterized in that: in the bottom be ship shape travel(l)ing rest the forward andor aft two ends respectively device described permanent magnet is arranged.