CN214477034U

CN214477034U - Change-over switch

Info

Publication number: CN214477034U
Application number: CN202120937427.XU
Authority: CN
Inventors: 郑玉井; 陈琼良; 黄国青
Original assignee: Gler Electric Co ltd
Current assignee: Gler Electric Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-10-22
Anticipated expiration: 2031-04-30

Abstract

The utility model relates to a change-over switch, including operating device, contact system, a plurality of contact subassembly, contact subassembly include the casing, rotate the contact support that sets up in the casing, set up cardboard in the contact support, two symmetry set up the movable contact bridge on the cardboard, two magnetic conductive plates that set up respectively on two movable contact bridge one sides, set up spring bracket on two movable contact bridges, set up spring leaf between spring bracket and magnetic conductive plate, two set up respectively at casing internal static contact, two set up on the casing and the wiring board that is connected with two static contact respectively, the casing include the base, set up the apron on the base, the apron on correspond two movable contact bridge departments and be provided with the observation hole, the observation hole in be provided with the translucent cover. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly.

Description

Change-over switch

Technical Field

The utility model particularly relates to a change over switch.

Background

At present, a change-over switch is a switching device for switching over two or more power sources or loads. The change-over switch is often used to switch on and off the circuit infrequently to switch on the electrical load. The change-over switch has wide application, and can be used as a circuit control switch, a test equipment switch, a motor control switch, a master control switch and the like. The current that can be carried by the change-over switch is great, so the change-over switch generally needs to have higher security. The change-over switch comprises an operating mechanism and a contact system, and the contact system of the existing change-over switch is unreasonable in structural design, so that the change-over switch has the defects of complex structure, unreliable performance and inconvenient assembly.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, dependable performance, the convenient change over switch of assembly.

In order to realize the above purpose, the utility model discloses a change-over switch, including operating device, contact system include the contact subassembly that a plurality of superpositions set up, the contact subassembly include the casing, rotate the contact carrier that sets up in the casing, set up cardboard in the contact carrier, two symmetry set up the movable contact bridge on the cardboard, two set up respectively at two movable contact bridge one side magnetic conductive plate, set up the spring bracket on two movable contact bridges, set up spring leaf between spring bracket and magnetic conductive plate, two set up respectively at casing internal static contact, two set up on the casing and the wiring board that is connected with two static contact respectively, the casing include the base, set up the apron on the base, the apron on correspond two movable contact bridge departments and be provided with the observation hole, the observation hole in be provided with the translucent cover.

The structure has the advantages that the transparent cover is arranged in the observation hole of the cover plate, a user can observe the position of the movable contact bridge through the transparent cover, so that the working state of the change-over switch can be known, the safety performance of the change-over switch can be improved, the contact pressure of the movable contact bridge can be enhanced through the spring piece, the contact resistance of the movable contact bridge and the static contact piece can be reduced, the service life of a contact system can be prolonged, and the change-over switch has the advantages of simple structure, stable and reliable performance and convenience in assembly.

Particularly, the two ends of the cover plate are respectively provided with a clamping hook, the base is provided with a clamping hole matched with the clamping hook, and the clamping hook is clamped in the clamping hole and forms clamping matching of the base and the cover plate. The cover plate is connected with the base in a clamping matching mode, so that the base and the cover plate can be assembled conveniently, and the assembly efficiency of the change-over switch can be improved.

Particularly, the base is provided with limiting blocks corresponding to two sides of the observation hole, the limiting blocks abut against the lower end face of the transparent cover, and the limiting blocks are in limiting fit with the transparent cover. The limiting block of the base is connected with the transparent cover in a limiting matching mode, and the limiting block can tightly press the transparent cover in the observation hole, so that the transparent cover can be conveniently assembled with the base and the cover plate.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an internal structure diagram of the embodiment of the present invention.

Fig. 3 is an assembly view of the movable contact bridge and the clamping plate according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 3, an embodiment of the present invention is a transfer switch, including an operating mechanism 10 and a contact system 20, where the contact system 20 includes a plurality of contact assemblies 30 stacked one on another, the contact assemblies 30 include a housing 31, a contact support 32 rotatably disposed in the housing 31, a clamping plate 33 disposed in the contact support 32, two movable contact bridges 34 symmetrically disposed on the clamping plate 33, two magnetic conductive plates 35 respectively disposed on one side of the two movable contact bridges 34, spring supports 36 disposed on the two movable contact bridges 34, a spring plate 37 disposed between the spring support 36 and the magnetic conductive plate 35, two stationary contact plates 38 respectively disposed in the housing 31, and two wiring boards 39 disposed on the housing 10 and respectively connected to the two stationary contact plates 38, the housing 31 includes a base 311 and a cover plate 312 disposed on the base 311, the cover plate 312 is provided with observation holes 313 corresponding to the two movable contact bridges 34, the transparent cover 40 is arranged in the observation hole 313.

As shown in fig. 2, two ends of the cover plate 312 are respectively provided with a hook 314, the base 311 is provided with a locking hole 315 matching with the hook 314, the hook 314 is locked in the locking hole 315, and the base 311 and the cover plate 312 are locked and matched. The cover plate is connected with the base in a clamping matching mode, so that the base and the cover plate can be assembled conveniently, and the assembly efficiency of the change-over switch can be improved. The base 311 is provided with a limiting block 316 at two sides corresponding to the observation hole 313, the limiting block 316 is abutted against the lower end face of the transparent cover 40, and the limiting block 316 is in limiting fit with the transparent cover 40. The limiting block of the base is connected with the transparent cover in a limiting matching mode, and the limiting block can tightly press the transparent cover in the observation hole, so that the transparent cover can be conveniently assembled with the base and the cover plate.

Be provided with the translucent cover in the observation hole of apron, the position of movable contact bridge is observed to user's accessible translucent cover to can know change over switch's operating condition, be favorable to improving this change over switch's security performance, and the spring leaf can strengthen the contact pressure of movable contact bridge, can reduce the contact resistance of movable contact bridge and static contact, be favorable to prolonging contact system's life, thereby this change over switch has simple structure, stable performance is reliable, the convenient advantage of assembly.

Claims

1. A change-over switch comprises an operating mechanism and a contact system, wherein the contact system comprises a plurality of contact assemblies which are arranged in a stacked mode, and the change-over switch is characterized in that: the contact assembly comprises a shell, a contact support, a clamping plate, two movable contact bridges, two magnetic conduction plates, spring supports, spring pieces, two static contact pieces and two wiring boards, wherein the contact support is rotatably arranged in the shell, the clamping plate is arranged in the contact support, the two movable contact bridges are symmetrically arranged on the clamping plate, the two magnetic conduction plates are respectively arranged on one side of the two movable contact bridges, the spring supports are arranged on the two movable contact bridges, the spring pieces are arranged between the spring supports and the magnetic conduction plates, the two wiring boards are respectively arranged in the shell, the two wiring boards are arranged on the shell and are respectively connected with the two static contact pieces, the shell comprises a base and a cover plate arranged on the base, observation holes are formed in the cover plate corresponding to the two movable contact bridges, and transparent covers are arranged in the observation holes.

2. The transfer switch of claim 1, wherein: the two ends of the cover plate are respectively provided with a clamping hook, the base is provided with a clamping hole matched with the clamping hook, and the clamping hook is clamped in the clamping hole and forms clamping matching of the base and the cover plate.

3. A diverter switch according to claim 1 or 2, characterized in that: the base on correspond the both sides punishment of observing the hole and do not be provided with the stopper, this stopper is contradicted on the lower terminal surface of translucent cover, and constitutes the spacing cooperation of stopper and translucent cover.