CN203607354U - Reusable protective tube - Google Patents
Reusable protective tube Download PDFInfo
- Publication number
- CN203607354U CN203607354U CN201320687740.8U CN201320687740U CN203607354U CN 203607354 U CN203607354 U CN 203607354U CN 201320687740 U CN201320687740 U CN 201320687740U CN 203607354 U CN203607354 U CN 203607354U
- Authority
- CN
- China
- Prior art keywords
- protective tube
- movable
- fixedly connected
- lower cover
- contact spring
- 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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Abstract
The utility model discloses a reusable protective tube, comprising an upper cover and a lower cover, metal caps wrapped on two ends of the upper cover and the lower cover, a first contact plate disposed on the lower cover, a movable contact spring whose fixed end is fixedly connected with the bottom surface of the first contact plate, a metal sheet which contact movable contacts on the bottom surface of the movable end of the movable contact spring, a heating coil fixedly connected with the metal sheet, and a second contact plate which is fixedly connected with the heating coil. The movable contact spring is provided with at least a salient point on the bottom surface between the fixed end and the movable end. The lower cover is also provided with a temperature strip. The salient points are disposed on the temperature strip. The protective tube can be repeated used, and does not need changing after the protective tube plays a role, thereby greatly improving usage convenience and reducing use cost.
Description
Technical field
The utility model relates to a kind of protective tube, relates in particular to a kind of reused protective tube.
Background technology
As Fig. 1; it has demonstrated the concrete structure of existing protective tube, and existing protective tube generally comprises glass tube 1, be placed in fuse 2 in glass tube 1, be enclosed within the iron cover 3 on glass tube 1 two ends, in the time that electric current is excessive; fuse 2 blows blocking-up electric current, thereby plays a protective role.But existing this protective tube can only use once, once the blowout that plays a role can not reuse, need to again change protective tube, so not only make troubles to user, but also improved use cost.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of reused protective tube, and it has not only improved the convenience using, but also has reduced use cost.
For achieving the above object, the utility model adopts following technical scheme:
Reused protective tube, comprise upper cover, lower cover, be wrapped in the metal cap on upper cover and lower cover two ends, be arranged on down the first contact plate covering, the movable contact spring that stiff end is fixedly connected with the first contact plate bottom surface, the sheet metal contacting with the moving contact being arranged on movable contact spring movable end bottom surface, the heating wire being fixedly connected with sheet metal, the second contact plate being fixedly connected with heating wire, described movable contact spring is provided with at least one salient point on the bottom surface between its stiff end and movable end, under described, cover a thermometer is also installed, described salient point is placed on this thermometer.
As a kind of preferred version, described metal cap is copper cap.
As a kind of preferred version, described sheet metal is silver strip.
As a kind of preferred version, described salient point has two.
The reused protective tube of one that the utility model is set forth, its beneficial effect is: compared with prior art, protective tube of the present utility model can repeatedly use, and after playing a role at it, changes protective tube, greatly improve the convenience using, reduced use cost.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of existing protective tube.
Fig. 2 is the configuration diagram of the utility model embodiment.
Description of reference numerals:
1, glass tube; 2, fuse; 3, iron cover;
10, upper cover; 20, lower cover; 30, copper cap; 40, the first contact plate; 50, movable contact spring; 51, moving contact; 52, salient point; 60, silver strip; 70, heating wire; 80, the second contact plate; 90, thermometer.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.
Please refer to shown in Fig. 2, it has demonstrated the concrete structure of the utility model preferred embodiment, reused protective tube, comprise upper cover 10, lower cover 20, be wrapped in the copper cap 30 on upper cover 10 and lower cover 20 two ends, be arranged on the first contact plate 40 on lower cover 20, the movable contact spring 50 that stiff end is fixedly connected with the first contact plate 40 bottom surfaces, the silver strip 60 contacting with the moving contact 51 being arranged on movable contact spring 50 movable end bottom surfaces, the heating wire 70 being fixedly connected with silver strip 60, the second contact plate 80 being fixedly connected with heating wire 70, described movable contact spring 50 is provided with two salient points 52 on the bottom surface between its stiff end and movable end, one thermometer 90 is also installed on described lower cover 20, described salient point 52 is placed on this thermometer 90.
When use, if electric current is excessive, the heat that heating wire 70 produces is delivered on thermometer 90, thermometer 90 temperature distortions upwards promote movable contact spring 50, the movable end of movable contact spring 50 is upwards lifted, moving contact 51 on movable end separates with silver strip 60, thereby reach the object of power-off, the defencive function of performance protective tube, and the temperature of working as thermometer 90 is reduced to a certain degree, when thermometer 90 restores to the original state, the movable end of movable contact spring 50 moves down reset, moving contact 51 on movable end recovers to contact with silver strip 60, now protective tube can continue again to use, without changing protective tube, greatly improve the convenience using, reduce use cost.
Be pointed out that, the copper cap 30 in the present embodiment can replace with other metal cap, and such as chapeau de fer, silver strip 60 also can replace with other sheet metal, such as copper sheet, certainly, because thermal conductivity and the conductivity of silver strip 60 are splendid, adopts silver strip 60 effects best.Salient point 52 quantity on movable contact spring 50 are not limited to two in the present embodiment, also can only have one, or three, even more.
The above, it is only the utility model preferred embodiment, not technical scope of the present utility model is imposed any restrictions, therefore any trickle modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. reused protective tube, it is characterized in that: comprise upper cover, lower cover, be wrapped in the metal cap on upper cover and lower cover two ends, be arranged on down the first contact plate covering, the movable contact spring that stiff end is fixedly connected with the first contact plate bottom surface, the sheet metal contacting with the moving contact being arranged on movable contact spring movable end bottom surface, the heating wire being fixedly connected with sheet metal, the second contact plate being fixedly connected with heating wire, described movable contact spring is provided with at least one salient point on the bottom surface between its stiff end and movable end, under described, cover a thermometer is also installed, described salient point is placed on this thermometer.
2. reused protective tube according to claim 1, is characterized in that: described metal cap is copper cap.
3. reused protective tube according to claim 1, is characterized in that: described sheet metal is silver strip.
4. reused protective tube according to claim 1, is characterized in that: described salient point has two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687740.8U CN203607354U (en) | 2013-11-02 | 2013-11-02 | Reusable protective tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687740.8U CN203607354U (en) | 2013-11-02 | 2013-11-02 | Reusable protective tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607354U true CN203607354U (en) | 2014-05-21 |
Family
ID=50720018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320687740.8U Expired - Fee Related CN203607354U (en) | 2013-11-02 | 2013-11-02 | Reusable protective tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607354U (en) |
-
2013
- 2013-11-02 CN CN201320687740.8U patent/CN203607354U/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 | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160321 Granted publication date: 20140521 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160704 Granted publication date: 20140521 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20160921 Granted publication date: 20140521 Date of cancellation: 20170104 Granted publication date: 20140521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20151102 |