CN212392155U

CN212392155U - Change-over switch

Info

Publication number: CN212392155U
Application number: CN202021621708.6U
Authority: CN
Inventors: 贾委峰; 马建平
Original assignee: Wenzhou Lixin Traction Equipment Co ltd
Current assignee: Zhejiang Lixin Traction Equipment Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-01-22
Anticipated expiration: 2030-08-06

Abstract

The utility model relates to a change-over switch, which comprises a shell, a panel arranged on the shell, a handle rotationally arranged on the shell, a change-over mechanism arranged in the shell and in linkage fit with the handle, and a contact system, the contact system comprises a plurality of bases which are arranged on the lower end of the shell in an overlapping way, a plurality of groups of contact modules which are respectively arranged in the bases, the base is internally provided with an accommodating cavity for placing a contact module, the contact module comprises two moving contacts which are respectively in linkage fit with the cam of the switching mechanism, two static contacts which are respectively arranged on the base corresponding to the two ends of the two moving contacts, and a plurality of connecting terminals connected with the static contacts, the base in be provided with the conducting strip of connection between two binding post, connect respectively on two binding post on the both ends of conducting strip, and constitute two binding post's electricity and connect. The utility model has the advantages of simple structure, stable and reliable performance, high safety and high protection level.

Description

Change-over switch

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to change-over switch.

Background

The change-over switch is also called a combination switch, and is a planar operation rotating left and right, unlike the operation of the knife switch. The change-over switch has the advantages of multiple contacts, multiple positions, small volume, reliable performance, convenient operation, flexible installation and the like, is mainly used for an introduction switch of a power supply in a machine tool electric control circuit, plays a role of isolating the power supply, and can also be used as a control switch for directly controlling the infrequent starting and stopping of a small-capacity asynchronous motor. The change-over switch also has a single pole, a double pole and a triple pole. The change-over switch comprises a shell, a panel, a handle rotationally arranged on the shell, a switching mechanism arranged in the shell and linked with the manual operation, and a contact system, wherein the contact system comprises a plurality of contact components which are overlapped and arranged at the lower end of the shell, each contact component comprises a shell, a cam which is arranged in the shell and linked and matched with a rotating shaft of the switching mechanism, two contact frames which are linked and matched with the cam, two moving contacts which are respectively arranged on the two contact frames, a plurality of fixed contacts which are arranged in the shell and respectively matched with the two moving contacts, two incoming line connecting terminals and two outgoing line connecting terminals, and two incoming line connecting terminals or two outgoing line connecting terminals are arranged between the two incoming line connecting terminals and are respectively arranged on conducting strips, the structural design of the existing change-over switch is unreasonable, the incoming line connecting terminals, the change-over switch also has the defects of unreliable performance and lower protection level.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance is reliable, high security, change over switch that protection level is high.

In order to achieve the purpose, the utility model adopts a change-over switch, which comprises a shell, a panel arranged on the shell, a handle rotationally arranged on the shell, a change-over mechanism arranged in the shell and in linkage fit with the handle, and a contact system, the contact system comprises a plurality of bases which are arranged on the lower end of the shell in an overlapping way, a plurality of groups of contact modules which are respectively arranged in the bases, the base is internally provided with an accommodating cavity for placing a contact module, the contact module comprises two moving contacts which are respectively in linkage fit with the cam of the switching mechanism, two static contacts which are respectively arranged on the base corresponding to the two ends of the two moving contacts, and a plurality of connecting terminals connected with the static contacts, the base in be provided with the conducting strip of connection between two binding post, connect respectively on two binding post on the both ends of conducting strip, and constitute two binding post's electricity and connect.

The beneficial effect of above-mentioned structure is: the conducting strip connected between the two wiring terminals is arranged in the base, and the conducting strip is designed in a hidden structure, so that the conducting strip can be prevented from being exposed, potential safety hazards can be avoided, and the safety performance of the change-over switch can be improved. Therefore, the change-over switch has the advantages of simple structure, stable and reliable performance, high safety and high protection level.

Particularly, the base is provided with a clamping groove corresponding to the conducting strip, the conducting strip is provided with a flanging, the flanging is inserted into the clamping groove, and the conducting strip is in clamping fit with the flanging. The conducting strip is connected with the base in a clamping matching mode, so that the conducting strip and the base can be assembled conveniently, and the assembly efficiency of the change-over switch can be improved.

Particularly, two ends of the conducting strip are respectively provided with a bending part attached to the static contact, each bending part is provided with a U-shaped clamping groove, each U-shaped clamping groove is clamped on the wiring screw of the two wiring terminals respectively, and the conducting strip is clamped and matched with the two wiring terminals.

Particularly, the base on be provided with the protection casing on the binding post of shroud, the base on correspond protection casing department and all be provided with the joint groove, the protection casing on correspond joint groove department and be provided with the fixture block of looks adaptation, the fixture block in the joint inslot, and constitute the joint cooperation of shroud and base. The base is provided with the cover on the wiring terminal, so that the wiring screw can be prevented from being exposed out of the outer base, and the safety performance of the change-over switch can be improved.

Particularly, the base on correspond the outer edge department in holding chamber and be provided with the sand grip, the lower extreme of casing on be provided with sand grip matched with recess, the sand grip block just constitute the sealed cooperation of base and casing in the recess. The base and the upper cover are in sealing fit, so that dust can be prevented from entering the accommodating cavity of the base, and the protection performance of the change-over switch can be improved.

Particularly, the outer edge of the plurality of bases corresponding to the containing cavities is provided with protruding strips, the bases are mutually overlapped and assembled through the protruding strips, and sealing matching among the bases is formed. Adopt sealed cooperation mode to assemble between a plurality of bases, can avoid the dust to enter into inside this change over switch to be favorable to improving this change over switch's barrier propterty.

Particularly, a sealing groove is arranged on the upper end face of the shell corresponding to the rotating shaft of the conversion mechanism, and a sealing gasket which is in sealing fit with the rotating shaft and the panel is arranged in the sealing groove. The sealing washer with the panel and the rotating shaft in sealing fit is arranged on the shell, the sealing effect of the change-over switch is better, and the working reliability of the change-over switch is improved.

Drawings

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

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a cross-sectional view of an embodiment of the present invention.

Fig. 4 is an internal structure diagram of the embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 4, an embodiment of the present invention is a transfer switch, including a housing 10, a panel 11 disposed on the housing 10, a handle 12 rotatably disposed on the housing 10, a transfer mechanism 13 disposed in the housing 10 and cooperating with the handle 12, and a contact system 20, wherein the contact system 20 includes a plurality of bases 21 stacked on a lower end of the housing 10, and a plurality of sets of contact modules 22 disposed in the bases 21, the base 21 is internally provided with a receiving cavity 200 for receiving the contact modules 22, the contact modules 22 include two moving contacts 221 cooperating with a cam 131 of the transfer mechanism 13, two stationary contacts 222 disposed on the bases 21 at two ends corresponding to the two moving contacts 221, and a plurality of connection terminals 223 connected to the stationary contacts 222, the base 21 is internally provided with a conductive sheet 224 connected between the two connection terminals 223, the conductive plate 224 is connected to the two connection terminals 223 at both ends thereof, respectively, and constitutes electrical connection of the two connection terminals 223. Protruding strips 211 are arranged on the outer edges of the bases 21 corresponding to the accommodating cavities 200, the bases 21 are mutually overlapped and assembled through the protruding strips 211, and sealing fit among the bases 21 is formed. Adopt sealed cooperation mode to assemble between a plurality of bases, can avoid the dust to enter into inside this change over switch to be favorable to improving this change over switch's barrier propterty. The base 21 on correspond conducting strip 224 department and be provided with draw-in groove 212, conducting strip 224 on be provided with turn-ups 2241, turn-ups 2241 alternate in draw-in groove 212, and constitute conducting strip 224 and turn-ups 2241's joint cooperation. The conducting strip is connected with the base in a clamping matching mode, so that the conducting strip and the base can be assembled conveniently, and the assembly efficiency of the change-over switch can be improved. The two ends of the conductive plate 224 are respectively provided with a bending part 2242 attached to the fixed contact 222, each bending part 2242 is provided with a U-shaped groove 2243, each U-shaped groove 2243 is respectively clamped on the wiring screws 2231 of the two wiring terminals 223, and the conductive plate 224 is in clamping fit with the two wiring terminals 223. Base 21 on be provided with the protection casing 23 on the binding post 223 of shroud, base 21 on correspond protection casing 23 department and all be provided with joint groove 213, protection casing 23 on correspond joint groove 213 department and be provided with the fixture block 231 of looks adaptation, fixture block 231 block in joint groove 213, and constitute the joint cooperation of shroud 23 and base 21. The base is provided with the cover on the wiring terminal, so that the wiring screw can be prevented from being exposed out of the outer base, and the safety performance of the change-over switch can be improved.

As shown in fig. 2 and 3, a protruding strip 214 is disposed on the base 21 corresponding to the outer edge of the accommodating cavity 200, a groove 101 matching with the protruding strip 214 is disposed on the lower end of the housing 10, and the protruding strip 214 is engaged in the groove 101 and forms a sealing fit between the base 21 and the housing 10. The base and the upper cover are in sealing fit, so that dust can be prevented from entering the accommodating cavity of the base, and the protection performance of the change-over switch can be improved. A sealing groove 102 is arranged on the upper end surface of the housing 10 corresponding to the rotating shaft 132 of the switching mechanism 13, and a sealing gasket 14 which forms a sealing fit with the rotating shaft 132 and the panel 11 is arranged in the sealing groove 102. The sealing washer with the panel and the rotating shaft in sealing fit is arranged on the shell, the sealing effect of the change-over switch is better, and the working reliability of the change-over switch is improved.

The conducting strip connected between the two wiring terminals is arranged in the base, and the conducting strip is designed in a hidden structure, so that the conducting strip can be prevented from being exposed, potential safety hazards can be avoided, and the safety performance of the change-over switch can be improved. Therefore, the change-over switch has the advantages of simple structure, stable and reliable performance, high safety and high protection level.

Claims

1. The utility model provides a change over switch, includes the casing, sets up panel on the casing, rotates the handle that sets up on the casing, set up in the casing and with handle linkage complex shifter, contact system, its characterized in that: the contact system comprises a plurality of bases and a plurality of groups of contact modules, wherein the bases are stacked on the lower end of the shell, the contact modules are respectively arranged in the bases, a containing cavity for containing the contact modules is arranged in each base, each contact module comprises two moving contacts which are respectively in linkage fit with a cam of the switching mechanism, two static contacts which are arranged on the bases corresponding to the two ends of the two moving contacts respectively, and a plurality of wiring terminals connected with the static contacts, a conductive sheet connected between the two wiring terminals is arranged in each base, and the two ends of each conductive sheet are respectively connected to the two wiring terminals to form electric connection of the two wiring terminals.

2. The transfer switch of claim 1, wherein: the base is provided with a clamping groove corresponding to the conducting strip, the conducting strip is provided with a flanging, the flanging is inserted into the clamping groove, and the conducting strip is in clamping fit with the flanging.

3. A diverter switch according to claim 1 or 2, characterized in that: the two ends of the conducting strip are respectively provided with a bending part attached to the static contact, each bending part is provided with a U-shaped clamping groove, each U-shaped clamping groove is clamped on the wiring screw of the two wiring terminals respectively, and the conducting strip is clamped and matched with the two wiring terminals.

4. A diverter switch according to claim 1 or 2, characterized in that: the base on be provided with the protection casing on the binding post of shroud, the base on correspond protection casing department and all be provided with the joint groove, the protection casing on correspond joint groove department and be provided with the fixture block of looks adaptation, the fixture block in the joint inslot, and constitute the joint cooperation of shroud and base.

5. A diverter switch according to claim 1 or 2, characterized in that: the base on correspond the outer edge department in holding chamber and be provided with the sand grip, the lower extreme of casing on be provided with sand grip matched with recess, the sand grip block just constitute the sealed cooperation of base and casing in the recess.

6. A diverter switch according to claim 1 or 2, characterized in that: the outer edge of a plurality of bases corresponding to the containing cavities is provided with protruding strips, the bases are mutually overlapped and assembled through the protruding strips, and sealing cooperation among the bases is formed.

7. A diverter switch according to claim 1 or 2, characterized in that: the upper end face of the shell is provided with a sealing groove corresponding to the rotating shaft of the switching mechanism, and a sealing gasket which is in sealing fit with the rotating shaft and the panel is arranged in the sealing groove.