CN202134469U

CN202134469U - Lead connecting structure of contactor

Info

Publication number: CN202134469U
Application number: CN201120221181U
Authority: CN
Inventors: 曹永�
Original assignee: XIAMEN HONGMEI ELECTRONIC CO Ltd
Current assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Priority date: 2011-06-27
Filing date: 2011-06-27
Publication date: 2012-02-01
Anticipated expiration: 2021-06-27

Abstract

The utility model discloses a lead connecting structure of a contactor, comprising a lead, a contact plate, an insertion sheet, a bolt and a nut. The insertion sheet is pasted on a lower end of the contact plate; the lead is pasted on an upper end of the contact plate; the nut is pasted on a lower end of the insertion sheet; and the bolt successively passes through the lead, the contact plate and the insertion sheet, and is threadedly fastened with the nut under the insertion sheet. After employing the structure, the lead can be directly contacted with the contact plate, so that contact resistance can be substantially reduced; and reliability of lead connection is increased. A screw seat on the contact plate does not need be made, so that making of the contact plate is easier; and the purpose of material saving is achieved, by employing thinner material to make the contact plate. The material of the insertion sheet can be other materials of bad conductive capability such as a steel plate, so that contact failure does not generate. The nut can be made by steel materials of better intensity, so that a larger torque can be endured and the nut is not damaged; the lead is locked more tightly by using a larger torque; and thus reliability of the lead connection is increased.

Description

A kind of conductor connecting structure of contactor

Technical field

The utility model relates to a kind of contactor, particularly relates to a kind of conductor connecting structure of contactor.

Background technology

Contactor is a kind of control apparatus of automation, and it is to utilize coil to flow through electric current to produce magnetic field, makes contact closure, to reach the electrical equipment of control load.Contactor is made up of electromagnetic system, contact system, arc-control device, insulation crust and annex etc. usually; Electromagnetic system has generally comprised solenoid, moving iron core and static iron core; Contact system includes moving contact; Moving contact normally with the connect together mutual interlock of moving iron core, arc-control device is commonly used to rapid breaking arc, avoids burning out contact system.After the solenoid energising of contactor; Can produce very strong magnetic field, make static iron core produce electromagnetic attraction and attract moving iron core, moving iron core is inhaled and when static iron core, has been driven the moving contact action; Make the moving contact of moving contact contact, thereby connect load power source with corresponding fixed contact; When solenoid cut off the power supply, magnetic field suction disappeared, and moving iron core interlock part relies on the reaction force of spring and separates, and moving contact is broken off, and promptly the moving contact of moving contact is separated with corresponding fixed contact, thereby cuts off load power source.Be typically provided with conductor connecting structure in the contactor, to realize being connected between contact plate and the lead, the conductor connecting structure of a kind of contactor of prior art is as shown in Figure 1; This conductor connecting structure comprise lead 1 ', contact plate 2 ', inserted sheet 3 ' and screw 4 ', contact plate 2 ' the bottom be provided with screw base 21 ', inserted sheet 3 ' be located at contact plate 2 ' the top; Lead 1 ' be pressed in inserted sheet 3 ' on, then, screw 4 ' pass successively lead 1 ', inserted sheet 3 ' with the contact plate 2 ' bottom of below screw base 21 ' spinning fixes; Make lead 1 ', inserted sheet 3 ' and contact plate 2 ' three be fixed together, this conductor connecting structure, inserted sheet 3 ' be positioned at contact plate 2 ' the top; Lead 1 ' and contact plate 2 ' between across inserted sheet 3 '; Like this, the one, increased the contact-making surface number that conducts electricity, the 2nd, when the inserted sheet material is steel plate; Heating increases, and the destruction of plate surface also can produce serious influence to the conducting of main circuit.

The utility model content

The purpose of the utility model is to overcome the deficiency of prior art; A kind of conductor connecting structure of contactor is provided, through architecture advances, when contactor connects lead; Lead directly contacts contact plate; The reliability that makes lead connect is improved, and simultaneously, has eliminated inserted sheet material and the surface appearance adverse effect that connection produced to main circuit conductor.

The utility model solves the technical scheme that its technical problem adopted: a kind of conductor connecting structure of contactor comprises lead, contact plate and inserted sheet; Also comprise a bolt and a nut; Said inserted sheet is attached to the lower end of contact plate, and said lead is attached to the upper end of contact plate, and nut is attached to the lower end of inserted sheet, and bolt passes lead, contact plate and inserted sheet from top to bottom successively and spins and be fastened with nut under the inserted sheet.

Further, also comprise a pad, this pad is located between the head and lead of bolt.

The conductor connecting structure of a kind of contactor of the utility model is that the cooperation with screw bolt and nut substitutes the screw of prior art and the cooperation between the contact plate screw base, because the nut that is used for fixing with bolt is not on contact plate; Therefore; Can contact plate be moved on to the upper end of inserted sheet and directly contacts with lead, like this, can simplify the processing and fabricating of contact plate; Simultaneously, can reduce contact resistance greatly.

The beneficial effect of the utility model is; Owing to adopted the combination of screw bolt and nut to fix lead, contact plate and inserted sheet; Like this; Just can contact plate be moved on to the upper end of inserted sheet and directly contacts with lead, overcome the long-standing technological prejudice in present technique field, can bring following beneficial effect:

The one,, lead can directly contact with contact plate, can reduce contact resistance greatly, and the reliability that lead is connected is improved;

The 2nd,, need not make screw base again on the contact plate, the making of contact plate is more prone to, can adopt thinner material to make contact plate simultaneously, reach the purpose of economical with materials;

The 3rd,, the inserted sheet material can be relatively poor material of other conductive capabilities such as steel plate, and can not cause loose contact;

The 4th,, the better steel material of nut usable intensity is processed, and can stand bigger moment of torsion and does not damage, and helps locking lead tightlyer with bigger moment of torsion, thereby improves the reliability that lead connects.

Below in conjunction with accompanying drawing and embodiment the utility model is done further explain; But the conductor connecting structure of a kind of contactor of the utility model is not limited to embodiment.

Description of drawings

Fig. 1 is the sketch map of the conductor connecting structure of prior art contactor;

Fig. 2 is the organigram of the utility model.

Embodiment

Embodiment, referring to shown in Figure 2, the conductor connecting structure of a kind of contactor of the utility model comprises lead 1, contact plate 2 and inserted sheet 3; Also comprise a bolt 4 and a nut 5; Said inserted sheet 3 is attached to the lower end of contact plate 2, and said lead 1 is attached to the upper end of contact plate 2, and nut 5 is attached to the lower end of inserted sheet 3, and bolt 4 passes lead 1, contact plate 2 and inserted sheet 3 from top to bottom successively and spins and be fastened with nut 5 under the inserted sheet.

Further, also comprise a pad 6, this pad 6 is located between the head and lead 1 of bolt 4.

The conductor connecting structure of a kind of contactor of the utility model is that the cooperation with bolt 4 and nut 5 substitutes the screw of prior art and the cooperation between the contact plate screw base, because the nut that is used for fixing with bolt is not on contact plate; Therefore; Can contact plate be moved on to the upper end of inserted sheet and directly contacts with lead, like this, can simplify the processing and fabricating of contact plate; Simultaneously, can reduce contact resistance greatly.

The foregoing description only is used for further specifying the conductor connecting structure of a kind of contactor of the utility model; But the utility model is not limited to embodiment; Every technical spirit according to the utility model all falls in the protection range of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. the conductor connecting structure of a contactor comprises lead, contact plate and inserted sheet; It is characterized in that:

Also comprise a bolt and a nut; Said inserted sheet is attached to the lower end of contact plate, and said lead is attached to the upper end of contact plate, and nut is attached to the lower end of inserted sheet, and bolt passes lead, contact plate and inserted sheet from top to bottom successively and spins and be fastened with nut under the inserted sheet.

2. the conductor connecting structure of contactor according to claim 1 is characterized in that: further, also comprise a pad, this pad is located between the head and lead of bolt.