CN2133925Y

CN2133925Y - Pyramidal face contact-type knife switch

Info

Publication number: CN2133925Y
Application number: CN 92211871
Authority: CN
Inventors: 王建军
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-05-19
Filing date: 1992-05-19
Publication date: 1993-05-19
Anticipated expiration: 2002-05-19

Abstract

The utility model discloses a tapered face contact-type knife switch, which is composed of a switch knife handle, a base, a shield, an input wire wire-connecting terminal, an output wire wire-connecting terminal, a tapered plug, a tapered socket, a common terminal in the middle of the switch knife and fuses. The contact face of the knife switch is large, and electrical sparks or a high-temperature can not be generated. The utility model is suitable for two-phase wires or a three-phase knife switch.

Description

Pyramidal face contact-type knife switch

The invention belongs to mains switch electrical equipment

Existing knife switch electrical equipment, the parts of its on/off are plug-in strip and spring card, plug-in strip is copper band shape, and the spring lengthy motion picture is that steel is held on the plug-in strip two sides, and its contact-making surface is two extremely narrow lines face contact X1X2 Fig. 8, little because of contacting, very easily heating behind the expanded by heating, causes plug-in strip and spring card loose contact and produces electric spark after the energising, be heated when serious, the resin that is cast in the fixing hole also can trickle out.

It is big to the purpose of this invention is to provide a kind of contact, the conical surface contact knife switch that generates heat little.

Conical surface contact knife switch, its contact component are to be riveted on the upper conical plug of plug-in strip and to become the integrally-built socket that has conical pipe with binding post, are example with the two-phase knife switch below, and the present invention is described in detail in detail in conjunction with the accompanying drawings.

Description of drawings:

Fig. 1 is the structure chart (protective cover is not drawn) of conical surface contact knife switch.

Fig. 2 is the front view of cone-shaped plug.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the left view of Fig. 2.

Fig. 5 is the front view of tapered socket.

Fig. 6 is the vertical view of Fig. 5.

Fig. 7 is the left view of Fig. 5.

Fig. 8 is the spring card of former knife switch.

Conical surface contact knife switch Fig. 1, by handle 1, the fixing bolt 2 of plug-in strip, the fixing bolt 22 of plug-in strip, plug-in strip 3, plug-in strip 23, incoming line compresses spiral shell 4, incoming line compresses 24, binding post 5, binding post 25, awl cartridge type socket, awl cartridge type socket 26, cone-shaped plug 7, cone-shaped plug 27, guard shield is spiral shell 8 fixedly, the hole 28 of stepping brake knife switch base plate, 17 public connecting end 10, public connecting end 29, plug-in strip connects long slab 11, plug-in strip connects long slab 30, fuse compressing tablet 13, fuse compressing tablet 33, bolt 14, bolt 34, the bolt 15 of secure shroud, fuse 16, fuse 35, output line binding post 18, output line binding post 36, fuse compressing tablet 19, fuse compressing tablet 37, fuse hold-down bolt 20, fuse hold-down bolt 38, output line bolt 21, output line bolt 39, knife switch guard shield (not drawing among Fig. 1) constitutes.The conical surface contact knife switch that above-mentioned parts are formed removes former as energized, and the spring card that is clamped in the plug-in strip two sides is designed to tapered socket, the conical surface contact that cone-shaped plug constitutes, and miscellaneous part all adopts former design drawing 1.Cone-shaped plug 7, cone-shaped plug 27 is two identical in structure component diagram 1, Fig. 2, Fig. 3, Fig. 4, cone-shaped plug 7, cone-shaped plug 27 is cylindrical cone, its tapering is 1:25 or 1:30, cone-shaped plug 7, the stub end of cone-shaped plug 27 is designed to two coequal and plugs and becomes to put in order the J1J2 Fig. 2 that stops structure, Fig. 3, Fig. 4, clamping plate J2 designs the rivet hole K1K2K3K4 that is connected with plug-in strip respectively, plug-in strip 3, plug-in strip 23 is at corresponding cone-shaped plug 7, the location drawing 1 of cone-shaped plug 27 respectively processes two connecting holes, the plug-in strip clamping plate J1 that packs into, behind the clamping plate J2 with rivet with cone-shaped plug and the plug-in strip Fig. 1 that is riveted together; Tapered socket 6, tapered socket 26 is two structures component diagram 1 completely, Fig. 5, Fig. 6, Fig. 7, become overall structure with the incoming line terminal, one side of tapered socket 6 and tapered socket 26 is a binding post, design has the entrance hole J3 of incoming line and compresses the screw Y1 of incoming line, after incoming line inserts entrance hole J3, screw in the screw Y1 by bolt 4 and bolt 24 Fig. 1 incoming line is compressed, the conically shaped Z1 that tapered

socket

6 or 26 designs have cone-shaped plug the to match tapered socket that closes behind the knife switch is the conical surface with cone-shaped plug and contacts, it is two strip breach Q vertically downward at least that the barrel of conically shaped is provided with, give birth to the performance of thermal expansion influence knife switch to prevent overcurrent, the lower end design of conically shaped 6 and conically shaped 26 has the through hole K5 Fig. 5 with conically shaped Z1 coaxial line, so that tapered socket 6 and tapered socket 26 are installed in the mounting groove of the binding post on the knife switch base plate 9 with bolt, then with on the base plate 9 of bolt with tapered socket stepping brake knife switch, fill the location with resin again, prevent to get loose.

Advantage and effect:

Pyramidal face contact-type knife switch, connection (switch) mode of former cause spring lengthy motion picture clamping plug-in strip is designed to by cone-shaped plug, tapered socket consists of the conical surface and connects (switch) mode, increased contact area, overcome the heating, the loose contact that cause owing to contact-making surface is little and produced electric spark so that cause the disadvantage of resin trickling in the fixing hole, it is suitable on the knife switch of two-phase or three phase mains.

Claims

1, a kind of conical surface contact guillotine type switch, it comprises handle 1, the fixing bolt 2 of plug-in strip 3, the fixing bolt 22 of plug-in strip 23, incoming line hold-down bolt 4, incoming line hold-down bolt 24, binding post 5, binding post 25, guard shield set bolt 8, knife switch base plate 9, the hole 28 of stepping brake knife switch base plate 9,17, public connecting end 10,29, plug-in strip connects long slab 11,30, fuse compressing tablet 13,33, bolt 14,34, the bolt 15 of secure shroud, fuse 16,35, output line binding post 18,36, fuse compressing tablet 19,37, fuse hold-down bolt 20,38, output line hold-down bolt 21,39, the knife switch guard shield, it is characterized in that: the parts of power connection or disconnection are cone-shaped plug, and the cone barrel socket is the conical surface type contact after closing a switch, the cone barrel socket becomes overall structure with the binding post of incoming line, cone-shaped plug by rivet on plug-in strip.

2, its feature of conical surface contact knife switch according to claim 1 also is: the barrel design of conically shaped socket has strip breach vertically downward.

3, its feature of conical surface contact knife switch according to claim 1 also is: the head end of cone-shaped plug is designed to two and that be parallel to each other becomes integrally-built clamping plate with plug, and design has the rivet hole that is connected with plug-in strip on the clamping plate.

4, its feature of conical surface contact knife switch stated according to claim 1 also is: design has the rivet hole that connects cone-shaped plug on the plug-in strip.