CN202977188U

CN202977188U - Novel self-cleaning rotary switch

Info

Publication number: CN202977188U
Application number: CN 201220704584
Authority: CN
Inventors: 黄臶
Original assignee: TIANJIN BEIFANG VALVE ACTUATOR CO Ltd
Current assignee: TIANJIN BEIFANG VALVE ACTUATOR CO Ltd
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2013-06-05
Anticipated expiration: 2022-12-17

Abstract

The utility model provides a novel self-cleaning rotary switch, comprising a switch shell, a rotary body, a conductive ring, two contact plates, two same pressure springs, and two wiring pins, wherein the rotary body is rotatably arranged in the switch shell; the conductive ring is embedded inside the rotary body; two contact plates are arranged at the left and right sides of the rotary body; the two same pressure springs are respectively arranged at the outer sides of the two contact plates; the two wiring pins respectively contact with the lower ends of inner sides of the two contact plates; and the two same contact plates, pressure springs and wiring pins are in axisymmetric distribution in the switch shell respectively. The novel self-cleaning rotary switch has the beneficial effects that the pressure of each pressure spring is basically kept constant; the 'self-cleaning function' can be achieved between the contact plates and the wiring pins; the novel self-cleaning rotary switch has the advantages of being simple in structure, convenient to maintain, long in service life and the like; and the self-cleaning function is achieved by a plurality of contact points.

Description

Novel auto purification type rotary switch

Technical field

The utility model belongs to the switching technique field, especially relates to a kind of novel auto purification type rotary switch.

Background technology

Rotary switch is to rotate a kind of switch that rotary body is controlled the main contacts break-make, and common rotary switch comprises the contact chip with fixed contact and the rotary body with armature contact.Drive the conducting ring on it and be switched on or switched off at the contact chip with fixed contact by rotary body, reaching conducting or cut off the function of circuit.Rotary body in the process of rotating, is CONTACT WITH FRICTION between conducting ring and contact chip, and this process can be removed the slight corrosion, dirt on electric conductor surface etc., therefore becomes by " auto purification type switch ".

For example, as shown in Figure 1, have in the rotary switch of said structure, the outer surface of conducting ring 2 protrudes from the outer surface of rotary body 1, when therefore conducting ring is contact chip 3 rotating contact, conducting ring 2 can promote contact chip 3 radial displacement occurs, and the pressure of the stage clip 4 in contact chip 3 outsides increases at this moment, thereby the load meeting that causes rotary body 1 to need to overcome in rotation process increases; On the other hand, because contact chip 3 is defined the position by a bolt that runs through 5 in this rotary switch, motion on vertical direction can not occur in contact chip 3, therefore switch is in the process that is switched on or switched off, relative motion can not occur with wiring pin 6 in contact chip 3, can not realize " self-cleaning " function between contact chip 3 and wiring pin 6.

Summary of the invention

Problem to be solved in the utility model is to provide the constant pressure that a kind of novel auto purification type rotary switch, especially rotary body bear in rotary course, and can realize certain " self-cleaning " effect between contact chip and wiring pin.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of novel auto purification type rotary switch, comprise that a switch case, is rotatably installed in the rotary body in described switch case, one is embedded in the conducting ring of described a rotating body, two contact chips that are positioned at the described rotary body left and right sides, two stage clips that lay respectively at two described contact chip outsides, two respectively with described two wiring pins that the contact chip inside lower end contacts;

Further, described switch case inside has a fixed block, and the inboard of described two identical wiring pins is connected with described fixed block;

Further, described rotary body is cylinder, it is positioned on the end face of described switch case and has the groove identical with described conducting ring shape, described conducting ring is embedded in described groove, described conducting ring has two identical circular arc sides, and the radius of described two circular arc sides is identical with the radius of described rotary body;

Further, described contact chip comprises the first contact-segment, supporting section and the second contact-segment, and described the first contact-segment is inboard to be contacted with described rotary body, is connected with described stage clip outside described supporting section, described the second supporting section inboard and the outer side contacts of described wiring pin;

Further, an end of described each stage clip connects a described contact chip, and the other end of described stage clip is fixed on described switch case inwall;

Further, described wiring pin comprises canned paragraph and wiring section, and described canned paragraph inboard is fixed on described fixed block, and its outside, upper end connects and its described contact chip at the fixed block homonymy, has a connection bolt on described wiring section.

Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, rotary body is in the process of rotation, conducting ring can not promote contact chip generation radial displacement, the constant pressure of the stage clip in the contact chip outside, the load value that rotary body need to overcome when rotating is constant, is conducive to extend the useful life of rotary switch; On the other hand, contact chip is in quick condition in described switch case, when rotary body drives the conducting ring rotation, conducting ring and contact chip CONTACT WITH FRICTION, under the drive of frictional force, between the contact chip that is in quick condition and corresponding wiring pin, slight reciprocating motion can occur, realize the self-purification functions such as cleaning corrosion, dirt.The utlity model has simple in structure, easy to maintenance, long service life, many contact points are realized the advantages such as self-cleaning function.

Description of drawings

Fig. 1 is the structural representation of prior art

Fig. 2 is structural representation of the present utility model

In figure:

1, rotary body 2, conducting ring 3, contact chip

4, stage clip 5, set bolt 6, wiring pin

7, fixed block

Embodiment

As shown in Figure 2, the utility model provides a kind of novel auto purification type rotary switch, comprise that a switch case, is rotatably installed in the rotary body 1 in described switch case, one is embedded in the conducting ring 2 of described a rotating body, two identical contact chips 3 that are positioned at the described rotary body left and right sides, two lay respectively at two identical stage clips 4 outside described contact chip, two respectively with the identical wiring pin 6 of described two contact chip inside lower end contact, described two identical contact chips 3, stage clip 4 and wiring pin 6 distribute respectively in switch case axisymmetricly;

Switch case inside has upper chamber, lower chambers and always puts on the fixed block 7 of lower chambers, the wiring pin that has described rotary body, conducting ring, contact chip, stage clip and part in upper chamber, described bottom chamber has the other part of described wiring pin, and described fixed block is between described two wiring pins;

Rotary body is cylinder, it is positioned on that end of described upper chamber and has the groove identical with the conducting ring shape, conducting ring is embedded in described groove, and conducting ring is comprised of two identical circular arc sides and a bottom horizontal, and the radius of two circular arc sides is identical with the radius of rotary body;

Contact chip comprises the first contact-segment, supporting section and the second contact-segment, and described the first contact-segment is inboard to be contacted with rotary body, is connected with described stage clip outside supporting section, and the second supporting section is inboard to be contacted with wiring pin, and its bottom contacts with described upper cavity;

One end of each stage clip connects a described contact chip, and its other end is fixed on the upper cavity inwall;

Wiring pin comprises canned paragraph and wiring section, and the canned paragraph inboard is fixed on described fixed block, and its outside, upper end connects and its contact chip at the fixed block homonymy, has a connection bolt on described wiring section.

the course of work of this example: the rotary body that rotates the present embodiment, make the first contact-segment of the conducting ring that is embedded in a rotating body and the second contact-segment respectively with two corresponding contact chip CONTACT WITH FRICTION, can realize the effect of " self-cleaning " between conducting ring and contact chip in rotation process, the frictional force that produces in rotation process simultaneously can be with between moving contacting plate and wiring pin relative motion occurs, this relative motion is also a CONTACT WITH FRICTION, therefore can realize " self-cleaning " function between contact chip and wiring pin, stage clip keeps constant pressure substantially in the course of work of the present embodiment.

Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., within all should still belonging to patent covering scope of the present utility model.

Claims

1. novel auto purification type rotary switch, it is characterized in that: comprise that a switch case, is rotatably installed in the rotary body in described switch case, one is embedded in the conducting ring of described a rotating body, two contact chips that are positioned at the described rotary body left and right sides, two stage clips that lay respectively at two described contact chip outsides, two respectively with described two wiring pins that the contact chip inside lower end contacts.

2. novel auto purification type rotary switch according to claim 1 is characterized in that: described switch case inside has a fixed block, and the inboard of described two identical wiring pins is connected with described fixed block.

3. novel auto purification type rotary switch according to claim 1, it is characterized in that: described rotary body is cylinder, it is positioned on the end face of described switch case and has the groove identical with described conducting ring shape, described conducting ring is embedded in described groove, described conducting ring has two identical circular arc sides, and the radius of described two circular arc sides is identical with the radius of described rotary body.

4. novel auto purification type rotary switch according to claim 1, it is characterized in that: described contact chip comprises the first contact-segment, supporting section and the second contact-segment, described the first contact-segment is inboard to be contacted with described rotary body, the described supporting section outside is connected with described stage clip, described the second supporting section inboard and the outer side contacts of described wiring pin.

5. novel auto purification type rotary switch according to claim 1 is characterized in that: an end of described each stage clip connects a described contact chip, and the other end of described stage clip is fixed on described switch case inwall.

6. novel auto purification type rotary switch according to claim 2, it is characterized in that: described wiring pin comprises canned paragraph and wiring section, described canned paragraph inboard is fixed on described fixed block, its outside, upper end connects and its described contact chip at the fixed block homonymy, has a connection bolt on described wiring section.