CN201112230Y - Guarded knife switch - Google Patents
Guarded knife switch Download PDFInfo
- Publication number
- CN201112230Y CN201112230Y CNU2007201836834U CN200720183683U CN201112230Y CN 201112230 Y CN201112230 Y CN 201112230Y CN U2007201836834 U CNU2007201836834 U CN U2007201836834U CN 200720183683 U CN200720183683 U CN 200720183683U CN 201112230 Y CN201112230 Y CN 201112230Y
- Authority
- CN
- China
- Prior art keywords
- cover
- base
- protective cover
- knife switch
- blade
- 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 - Fee Related
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model relates to a protection knife-blade switch, pertaining to the technical field of electrical switch devices. The switch comprises a base; the lower end of the base is provided with a lower cover, and the upper end of the base is provided with an upper cover; the upper cover, the lower cover and the base enclose into a case structure; the lower end of the base corresponding to the inner side of the lower cover is provided with a plurality of static contacts and the upper end of the base corresponding to the inner side of the upper cover is provided with a plurality of movable contacts corresponding to the static contacts; the lower ends of blades, the number of which is the same as the number of the static contacts, are articulated with the static contacts; and the upper ends of the blades are connected with a protection lid; the upper end of the protection lid is provided with a protection clapboard which extends upwards and overtops the upper end of the base. The switch can further improve the safety protection capacity and reduce hidden troubles of the safety.
Description
Technical field
The utility model relates to a kind of protection knife switch, belongs to the technical field of electrical switchgear.
Technical background
For ensureing the safety of operator in operating process, avoid accident because of firmly careless false touch electric conductor, Chinese patent discloses a kind of protection knife switch (document number: CN2552149Y), comprise base, upper contact head seat, following contact base, blade, also has a protective cover, blade one end is fixed under the protective cover, an end is connected in down on the contact base and also can rotates, and protective cover, lower end peace low protection cover are set up in the base upper end.
Technique scheme has played the effect of protection electric arc to a certain extent, but the operator is when contacting blade with moving contact, the electric arc that moving contact and blade produce still may pass between protective cover upper end and the last cover slit operator is caused danger, so still there is certain potential safety hazard in it.
Summary of the invention
The utility model purpose is to provide a kind of security protection performance that can further improve, and reduces the protection knife switch of potential safety hazard, has solved the problems referred to above that prior art exists.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: it comprises base, the base lower end is provided with down cover, the base upper end is provided with cover, last cover, following cover and base surround case structure, the base lower end corresponding under cover the inboard and be provided with several fixed contacts, the base upper end is corresponding to inboard several moving contacts corresponding with fixed contact that be provided with of last cover, blade lower end and fixed contact that number is corresponding with fixed contact form hinged, the blade upper end is connected with protective cover, described protective cover upper end is provided with guard screen, and described guard screen extends upward and exceeds the base upper end.Wherein, in the protective cover upper end guard screen that exceeds the base upper end is set, the hand of operation is kept apart with moving contact and blade contact position, can prevent further that moving contact from contacting the electric arc that produces the operator is caused danger with blade, strengthen security protection performance of the present utility model, and reduced potential safety hazard.
As preferably, described protective cover is provided with handle, and described handle departs from the moving contact setting.Wherein, the veteran is set on protective cover can be convenient to the utility model folding operation, veteran's position deviation then be can further improve the fail safe of operation in the moving contact setting.
As preferably, the L-shaped structure of described guard screen, it is inboard that the vertical part of described L shaped structure is connected the protective cover upper end, the transverse part of L shaped structure from the junction, vertical part to the turnover of the outside of protective cover.Wherein, the guard screen of L shaped structure can be the hand semi-surrounding with operator's operation, thereby has strengthened security protection performance of the present utility model more.
As preferably, be provided with hook between described protective cover and the blade, described hook one end is square and cooperates with the square hole that is provided with on the blade, is connected by screw between the other end of hook and the protective cover.Wherein, will adopt hook to be connected between blade and the protective cover, thus between protective cover and blade the certain space of formation, thereby can be convenient to assembling of the present utility model.
As preferably, described base is provided with several dividing plates, and described dividing plate is separated adjacent fixed contact and moving contact.Wherein, dividing plate is set on the base will be separated between adjacent moving contact and the fixed contact mutually, can avoid adjacent moving contact and the phase mutual interference between the fixed contact, improves reliability of the present utility model.
As preferably, the described cover sidewall upper that goes up forms breach, and described breach is made of flat portion and the curved portions parallel with base, forms the arc port that cooperates with last cover curved portions on the described protective cover.Wherein, offering breach on last the cover can cooperate with the protective cover upper end, and the curved portions of breach then can cooperate with the arc port of protective cover, be convenient to operation, simultaneously, the protective cover upper end is cooperated the thickness that also can reduce protective cover with the breach of last cover, make the utility model overall structure more compact.
As preferably, described base one side is provided with auxiliary switch, and described protective cover one side is provided with the projection corresponding with auxiliary switch.Wherein, auxiliary switch can show folding condition of the present utility model.
As preferably, described go up cover and down between cover and the base by combining screw after convex body and the groove fit.Wherein, last cover reaches and adopts convex body and groove fit one side can increase their polarization down between the cover earlier, also is convenient to assembling on the other hand.
Therefore, the utlity model has and can further improve the security protection performance, reduce characteristics such as potential safety hazard.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as depicted in figs. 1 and 2, base 1 lower end is provided with down cover 2, base 1 upper end is provided with cover 3, last cover 3 and down between cover 2 and the base 1 by combining screw after convex body 19 and groove 20 cooperations, last cover 3, down cover 2 and base 3 surround case structure, base 1 lower end corresponding under cover 2 inboards and be provided with three fixed contacts 4, base 1 upper end is provided with three moving contacts 5 corresponding with fixed contact 4 corresponding to last cover 3 inboards, base 1 is provided with two dividing plates 9, and dividing plate 9 is separated adjacent fixed contact 4 and moving contact 5.Number and fixed contact 4 corresponding blade 6 lower ends and fixed contacts 4 form hinged, blade 6 upper ends are connected with protective cover 7, be provided with hook 8 between protective cover 7 and the blade 6, link up with 8 one ends and be square and cooperate, link up with between 8 the other end and the protective cover 7 and be connected by screw with the square hole that is provided with on the blade 6.Position corresponding to moving contact 5 on the protective cover 7 is respectively equipped with through hole 11, and protective cover 7 is provided with handle 12, and handle 12 departs from moving contact 5 and is provided with.Protective cover 7 upper ends are provided with guard screen 10, flexibly connect for pegging graft between guard screen 10 and the protective cover, like this when blade with after moving contact 5 contacts, guard screen 10 can be taken off, thereby make that the structure of knife switch is more succinct, guard screen 10 extends upward and exceeds base 1 upper end (referring to Fig. 2), guard screen 10 L-shaped structures, the vertical part 101 of L shaped structure is connected inboard, protective cover 7 upper end, and 101 junctions turn down to the outside of protective cover 7 transverse part 102 of L shaped structure from the vertical part.Last cover 3 sidewall upper form breach 13, and breach 13 is made of flat portion 14 and the curved portions 15 parallel with base 1, forms the arc port 16 that cooperates with last cover curved portions 15 on the protective cover 7.Base 1 one sides are provided with auxiliary switch 17, and protective cover 7 one sides are provided with the projection 18 corresponding with auxiliary switch 17.
Claims (8)
1, a kind of protection knife switch, comprise base, the base lower end is provided with down cover, the base upper end is provided with cover, last cover, following cover and base surround case structure, the base lower end corresponding under cover the inboard and be provided with several fixed contacts, the base upper end is corresponding to inboard several moving contacts corresponding with fixed contact that be provided with of last cover, blade lower end and fixed contact that number is corresponding with fixed contact form hinged, the blade upper end is connected with protective cover, it is characterized in that described protective cover upper end is provided with guard screen, described guard screen extends upward and exceeds the base upper end.
2, protection knife switch according to claim 1 is characterized in that described protective cover is provided with handle, and described handle departs from the moving contact setting.
3, protection knife switch according to claim 1 and 2 is characterized in that the L-shaped structure of described guard screen, and it is inboard that the vertical part of described L shaped structure is connected the protective cover upper end, and the outside to protective cover turns down the transverse part of L shaped structure from the junction, vertical part.
4, protection knife switch according to claim 1 and 2 is characterized in that being provided with hook between described protective cover and the blade, and described hook one end is square and cooperates with the square hole that is provided with on the blade, is connected by screw between the other end of hook and the protective cover.
5, protection knife switch according to claim 1 and 2 is characterized in that described base is provided with several dividing plates, and described dividing plate is separated adjacent fixed contact and moving contact.
6, protection knife switch according to claim 1 and 2 is characterized in that the described cover sidewall upper that goes up forms breach, and described breach is made of flat portion and the curved portions parallel with base, forms the arc port that cooperates with last cover curved portions on the described protective cover.
7, protection knife switch according to claim 1 and 2 is characterized in that described base one side is provided with auxiliary switch, and described protective cover one side is provided with the projection corresponding with auxiliary switch.
8, protection knife switch according to claim 1 and 2, it is characterized in that described go up cover and down between cover and the base by combining screw after convex body and the groove fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201836834U CN201112230Y (en) | 2007-09-29 | 2007-09-29 | Guarded knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201836834U CN201112230Y (en) | 2007-09-29 | 2007-09-29 | Guarded knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201112230Y true CN201112230Y (en) | 2008-09-10 |
Family
ID=39963975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201836834U Expired - Fee Related CN201112230Y (en) | 2007-09-29 | 2007-09-29 | Guarded knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201112230Y (en) |
-
2007
- 2007-09-29 CN CNU2007201836834U patent/CN201112230Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20100929 |