CN203950729U

CN203950729U - The contact system of isolating switch

Info

Publication number: CN203950729U
Application number: CN201420345863.8U
Authority: CN
Inventors: 李长营; 龚柱
Original assignee: XIAMEN LRONGXK ELECTRICAL Co Ltd
Current assignee: XIAMEN LRONGXK ELECTRICAL Co Ltd
Priority date: 2014-06-26
Filing date: 2014-06-26
Publication date: 2014-11-19
Anticipated expiration: 2024-06-26

Abstract

The utility model discloses a kind of contact system of isolating switch, it comprises the sliding beam of insulation, insulating base, above the sliding beam of described insulation, be provided with three groups of moving contact components, above described insulating base, be provided with six fixed contacts, in every phase electric loop of isolating switch, formed by a moving contact component and two fixed contacts.Described moving contact component is made up of the arcing contact of two cylindrical shapes, contact contact, spring and the supporter of two cylindrical shapes; Described fixed contact is made up of three parts: there is a knife-edge groove described Part I edge, also there are a knife-edge groove and one, center fixed contact installing hole in described Part II edge, and there are a fixed contact installing hole and a wiring hole being connected with outside phase line in described Part III center.Contact system connection interrupting performance of the present utility model is high, and temperature rise is low, and bearing capacity is large, is a kind of good structure of contact terminal of isolating switch product.

Description

The contact system of isolating switch

Technical field

The utility model relates to a kind of contact system of isolating switch, relates in particular to the structure of moving contact and the fixed contact of isolating switch.

Background technology

In the market in the contact system of conventional isolating switch, the structure of its moving contact only arranges one group of contact contact for conduction, if the isolating switch that this structure forms is in the time of connection or disjunction load current of different nature, the electric arc of generation is by outer surface or the contact body of seriously scaling loss contact contact.Switch to be isolated is again when making current, the contact-making surface of its moving contact and fixed contact will produce great resistance and even two contacts at all cannot On current, therefore, can make isolating switch because causing product temperature rise in disjunction or after connecting heterogeneity load, reduce the serious consequence of electric conductivity and damage.

Summary of the invention

The purpose of this utility model is to solve isolating switch in the market because producing product temperature rise in disjunction or after connecting heterogeneity load, the technical problem of electric conductivity reduction and a kind of novel contact system is provided.

In order to achieve the above object, target of the present utility model is to provide a kind of novel contact system, and the contact contact 6 in the moving contact component 2 of this contact system can be because not changing after isolating switch connection or the load of disjunction heterogeneity with the quality of fixed contact 1 Surface Contact.

By the contact system of isolating switch hereinafter, above-mentioned object, target all will become more obvious, this contact system comprises the sliding beam 3 of insulation, insulating base 4, the sliding beam 3 of insulation is provided with three groups of moving contact components 2, insulating base 4 is provided with six fixed contacts 1, and every group of moving contact component 2 is made up of two contact contacts 6 and two arcing contacts 5, spring 9 and supporters 10; It is characterized in that, the length of two arcing contacts 5 is greater than the length of two contact contacts 6, fixed contact 1 is made up of three parts: there is a knife-edge groove Part I 1a edge, also there are a knife-edge groove and one, center fixed contact installing hole in Part II 1b edge, and there are a fixed contact installing hole and a wiring hole being connected with outside phase line in Part III 1c center.

Brief description of the drawings

Fig. 1 is the structural perspective of the utility model switch touching head system in disjunction position.

Fig. 2 is the structural perspective of the utility model moving contact component.

Fig. 3 is the schematic diagram of fixed contact of the present utility model.

Fig. 4 is the partial structurtes stereogram of the utility model switch touching head system in disjunction moment.

Fig. 5 is the partial structurtes stereogram of the utility model switch touching head system in on-position.

Description of reference numerals.

1-fixed contact; 2-moving contact component; The sliding beam of 3-insulation; 4-insulating base; 5-arcing contact;

6-contacts contact; 7-fixed contact installing hole; 8-phase line wiring hole; 9-spring; 10-supporter;

H-height; L-distance of center circle; 1a-Part I; 1b-Part II; 1c-Part III.

Embodiment

With reference to Fig. 1, the sliding beam 3 of insulation of isolating switch is arranged in the inner chamber of insulating base 4, moving contact component 2 is arranged on the sliding beam 3 of insulation, fixed contact 1 is arranged on the sidewall of insulating base 4, in the time that the sliding beam 3 of insulation horizontally slips in the inner chamber of insulating base 4, drive moving contact component 2 is horizontally slipped together, make it contact or separate with the fixed contact 1 being arranged on insulating base 4 sidewalls, realize point basic function of closing of isolating switch.

With reference to Fig. 2, Fig. 3, Fig. 5, the arcing contact 5 of moving contact component 2 with contact contact 6 and adopt cylindrical shape structural design, adopt the design of knife-edge divided edge structure because of the Part I 1a of fixed contact 1 and the edge that Part II 1b contacts with moving contact component 2 again, therefore under the effect that moving contact component 2 moves at the sliding beam 3 of insulation, speed that can be very fast rolls on the surface of fixed contact 1, two arcing contacts 5 contact contact 6 at spring 9 with two, under the active force of supporter 10, clamp respectively Part II 1b and the Part I 1a of fixed contact 1, the quick connection of dynamic/static contact, improve the electric connection performance of isolating switch, in like manner also can learn the raising of interrupting performance.

With reference to Fig. 4, isolating switch is in the time of connection or disjunction load, between moving contact and fixed contact 1, can produce arc burning, thereby the surface of will burn moving contact and fixed contact 1 or damage contact body, in order to address this problem, the utility model has been taked the structural design of moving contact component 2 and fixed contact 1 to dynamic/static contact, the fixed contact 1 of this structure is divided into three partial design, the knife-edge groove of Part I 1a and the knife-edge groove of Part II 1b and Part III 1c and outside phase terminal, three parts are all a metallic plate and manufacture, moving contact component 2 is to contact contact 6 and spring 9 by the arcing contact 5 of two cylindrical shapes and two cylindrical shapes, supporter 10 forms, the knife-edge groove of the knife-edge of described fixed contact Part I and Part II forms stairstepping, and the height h of ladder is greater than arcing contact 5 and the distance of center circle L that contacts contact 6 in moving contact component 2, this contact system is in the time of disjunction load current, only have arcing contact 5 and the knife-edge groove of the Part II 1b of fixed contact 1 participate in disjunction load current work and produce electric arc, cause both surfaces to produce scaling loss, in contrast, the Part I 1a of contact contact 6 and fixed contact 1 is without participating in disjunction work, corresponding without electric arc generation with without surperficial scaling loss, breaking operation repeatedly circulates, the Part I 1a of contact contact 6 and fixed contact 1 can keep the good effect that contacts all the time, ensure that isolating switch can not produce the technical problem of product temperature rise rising and electric conductivity reduction after connection or the load of disjunction heterogeneity.

Claims

1. the contact system of an isolating switch, it comprises insulation sliding beam (3), insulating base (4), the described sliding beam of insulation (3) is provided with three groups of moving contact components (2), described insulating base (4) is provided with six fixed contacts (1), in the every phase electric loop of isolating switch, is made up of a moving contact component (2) and two fixed contacts (1); It is characterized in that, described moving contact component (2) is made up of contact contact (6), spring (9) and the supporter (10) of the arcing contact (5) of two cylindrical shapes, two cylindrical shapes; Described fixed contact (1) is made up of three parts:

There is a knife-edge groove described Part I (1a) edge, also there are a knife-edge groove and one, center fixed contact installing hole in described Part II (1b) edge, and there are a fixed contact installing hole and a wiring hole being connected with outside phase line in described Part III (1c) center.

2. the contact system of a kind of isolating switch according to claim 1, is characterized in that, the length of the arcing contact (5) of described cylindrical shape is greater than the length of the contact contact (6) of described cylindrical shape.

3. the contact system of a kind of isolating switch according to claim 1, it is characterized in that, three parts of described fixed contact (1) are all the plate part of a plane, the knife-edge groove of described Part I (1a) becomes stairstepping with the knife-edge groove of described Part II (1b), and the height (h) of its ladder is greater than the arcing contact (5) and the distance of center circle (L) that contacts contact (6) in moving contact component (2).