CN2867574Y - A safety switch - Google Patents
A safety switch Download PDFInfo
- Publication number
- CN2867574Y CN2867574Y CN 200620033470 CN200620033470U CN2867574Y CN 2867574 Y CN2867574 Y CN 2867574Y CN 200620033470 CN200620033470 CN 200620033470 CN 200620033470 U CN200620033470 U CN 200620033470U CN 2867574 Y CN2867574 Y CN 2867574Y
- Authority
- CN
- China
- Prior art keywords
- moving contact
- contact terminal
- contact arm
- guide rod
- protection switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a protection switch, including action structure and contact terminal system. The push pole of action structure could move horizontally in order to push the moving contact terminal arm in positive direction to open or close the contact terminal. The moving contact terminal arm is a fluctuating lever, with the structure of rod guidance and upright guidance. Specifically, the moving contact terminal arm has guide holes on the back end, the guide rod is fixed on the base in the direction parallel to the push rod movement and the guide holes are on the guide rod; a compression spring uplifts the moving contact terminal arm, the lower end of the compression spring is against the base and the upper end of the compression ring is against the place among the upper end surface of the moving contact terminal arm, the guide holes and the push rod. The utility model could facilitate enough initial pressure generation by the contact terminal when closing and enough end pressure generation after closing, as well as enough disjunction force in the contact terminal disjunction, in order to guarantee the contact terminal system with reliable make-and-break performance.
Description
(1) technical field:
The utility model relates to a kind of switch, particularly a kind of protection switch.
(2) background technology:
Existing, employing push rod translation forward promotes the protection switch (comprise be with earth leakage protective miniature circuit breaker and wall protection switch) of moving contact arm with the structure of switching contact; its moving contact arm adopts the structure of multiple-piece elastic conducting strip parallel connection more; the contact system of this structure is that the flexible deformation masterpiece of dependence elastic conducting strip is a contact pressure when closed; this has determined it that reliable, enough initial pressures can not be provided, even reliable end pressure can not be provided.And this protection switch is in use, if electric current is excessive, can cause also that flexure strip is overheated, the DE variation, thus pressure and breaking speed when further influencing contact closure.Said structure has limited the raising of switch on and off ability, and therefore, existing protection switch faults such as contact melting welding, adhesion occur in use for some time easily.In addition, the structure of existing protection switch and the restriction of inner space size have also strengthened the existing improved difficulty of protection switch contact system.
(3) utility model content:
The utility model is on the structure of existing protection switch; by improving contact system; lever type and the moving contact arm configuration of guide rod correcting is arranged adopt to float; produce enough initial pressures when making contact closure; produce enough end pressures after the contact closure, and also can produce the protection switch of enough disjunction power during the contact disjunction.
This novel protected switch is identical with existing protection switch; comprise actuating mechanism and contact system; and its actuating mechanism is also identical with existing protection switch; wherein; the push rod translation forward of actuating mechanism promotes the moving contact arm to open and close contact; different is that the moving contact arm of this novel protected switch is unsteady lever type and the structure that the guide rod correcting is arranged.In the such scheme, a kind of scheme preferably is: the rear end of moving contact arm offers pilot hole, and guide rod is installed on the pedestal with the form with the flat shape of direction of push rod translation, and pilot hole is placed on the guide rod; Also have one act on the moving contact arm, the position between pilot hole and the push rod, with the spring of lifting on the moving contact arm, as the compression spring that the lower end peaks on the pedestal, the upper end peaks at the position between moving contact arm lower surface, pilot hole and the push rod.Wherein the guide rod upper end preferably is provided with the positioning end of control moving contact arm rear end domain of walker, and lower end of the guide rod is fixed on the pedestal; Guide rod is preferably the adjustable adjusting guide rod of effective length, and as screw rod, screw rod is fixed on the pedestal with nut.Wherein the moving contact arm is preferably rigid structure.
Because this novel switched moving contact arm is the conductive plate that adopts a slice to have enough conductive sections and intensity, and the moving contact arm is shouldered bar as floating, by the effect of push rod to the moving contact arm, produce enough initial pressures in the time that contact closure can being made, produce enough end pressures after the contact closure, and also can produce enough disjunction power during the contact disjunction, thereby guarantee that contact system has reliable break-make performance.Adopt a kind of screw-type guide rod to pass contact arm simultaneously, both can contact arm float correcting and location can be realized clearance between open contacts and the isoparametric adjustment of the excess of stroke are obtained the best fit parameter easily by regulating this screw-type guide rod again.
(4) description of drawings:
Fig. 1 is its contact of a kind of execution mode of the utility model structural representation in opened condition;
Fig. 2 is the schematic diagram of closure state for execution mode contact shown in Figure 1.
1, fixed contact; 2, moving contact; 3, moving contact arm; 4, push rod; 5, pressing plate; 6, handle; 7, connecting rod; 8, screw rod; 9, nut; 10, compression spring; 11, pedestal; 12, pilot hole.
(5) embodiment:
Be non-limiting execution mode of the present utility model below.
In Fig. 1, execution mode shown in Figure 2; this protection switch comprises actuating mechanism and contact system; actuating mechanism comprises handle 6, pressing plate 5 and push rod 4; be connected interlock by connecting rod 7 between handle 6 and the pressing plate 5; push rod 4 is arranged at pressing plate 5 lower ends; push rod 4 lower ends are contact system, and push rod 4 translation in vertical direction opens and closes contact so that forward promotes moving contact arm 3.Contact system comprises fixed contact 1 and moving contact 2, moving contact 2 is fixed on moving contact arm 3 front ends, the conductive plate of moving contact arm 3 enough conductive sections and intensity for a slice has, its rear end offers pilot hole 12, pilot hole 12 is placed on the screw rod 8, screw rod 8 heads make progress, and the lower end vertically is fixed on the pedestal 11 with nut 9; The lower end of compression spring 10 peaks on the pedestal 11, and the upper end of compression spring 10 peaks at the position between moving contact arm 3 lower surfaces, pilot hole 12 and the push rod 4.
Claims (7)
1, a kind of protection switch comprises actuating mechanism and contact system, and actuating mechanism comprises push rod; Contact system comprises moving contact, and moving contact is fixed on moving contact arm front end; Push rod can translation open and close contact so that forward promotes the moving contact arm, it is characterized in that: the structure of described moving contact arm (3) for floating and shouldering bar and the guide rod correcting is arranged.
2, protection switch according to claim 1 is characterized in that: the rear end of moving contact arm (3) offers pilot hole (2), and guide rod is installed on the pedestal (11) with the form parallel with the direction of push rod (4) translation, and pilot hole (12) is placed on the guide rod; Also have one with the spring action of lifting on the moving contact arm (3) in moving contact arm (3) go up, position between pilot hole (12) and the push rod (4).
3, protection switch according to claim 2 is characterized in that: described spring is compression spring (10), and the lower end of compression spring (10) peaks on the pedestal (11), and the upper end of compression spring (10) peaks at moving contact arm (3) lower surface.
4, protection switch according to claim 2 is characterized in that: the guide rod upper end is provided with the positioning end of control moving contact arm (3) rear end domain of walker, and lower end of the guide rod is fixed on the pedestal (11).
5, protection switch according to claim 2 is characterized in that: described guide rod is the adjustable adjusting guide rod of effective length.
6, protection switch according to claim 5 is characterized in that: described guide rod is screw rod (8), and screw rod (8) head upwards is fixed on the pedestal (11) with nut (9).
7, protection switch according to claim 1 is characterized in that: described moving contact arm (3) is a rigid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033470 CN2867574Y (en) | 2006-03-15 | 2006-03-15 | A safety switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033470 CN2867574Y (en) | 2006-03-15 | 2006-03-15 | A safety switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867574Y true CN2867574Y (en) | 2007-02-07 |
Family
ID=37703279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620033470 Expired - Lifetime CN2867574Y (en) | 2006-03-15 | 2006-03-15 | A safety switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867574Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576248A (en) * | 2015-01-30 | 2015-04-29 | 浙江天正电气股份有限公司 | Breaker contact system |
| CN104599914A (en) * | 2015-01-30 | 2015-05-06 | 浙江天正电气股份有限公司 | Mini-type circuit breaker |
-
2006
- 2006-03-15 CN CN 200620033470 patent/CN2867574Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576248A (en) * | 2015-01-30 | 2015-04-29 | 浙江天正电气股份有限公司 | Breaker contact system |
| CN104599914A (en) * | 2015-01-30 | 2015-05-06 | 浙江天正电气股份有限公司 | Mini-type circuit breaker |
| CN104599914B (en) * | 2015-01-30 | 2017-02-22 | 浙江天正电气股份有限公司 | Mini-type circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070207 |
|
| EXPY | Termination of patent right or utility model |