CN207977273U - A kind of line short circuit current protective device - Google Patents
A kind of line short circuit current protective device Download PDFInfo
- Publication number
- CN207977273U CN207977273U CN201820476586.2U CN201820476586U CN207977273U CN 207977273 U CN207977273 U CN 207977273U CN 201820476586 U CN201820476586 U CN 201820476586U CN 207977273 U CN207977273 U CN 207977273U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- metal terminal
- capping
- sliding plunger
- mobile
- 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 kind of line short circuit current protective devices, including：Cylinder, sliding plunger, capping, fixed metal terminal, mobile metal terminal, compressed spring, connect metal wire, expanded by heating filler, the cylinder is cylinder, the sliding plunger is slidably connected in cylinder, the capping is threadedly attached at cylinder lower ending opening, the fixation metal terminal is fixed in the center of capping, the mobile metal terminal is fixed in the center of sliding plunger, and mobile metal terminal is contacted with fixed metal terminal, the compressed spring both ends respectively with end closure on cylinder, sliding plunger connects, described connection metal wire one end is electrically connected on mobile metal terminal, the expanded by heating filler is filled in cylinder, in cavity between capping and sliding plunger.The utility model has simple in structure, cheap；The advantages that replacing more convenient, sensitivity higher.
Description
Technical field
Utility model is related to electric protective equipment technical field, specially a kind of line short circuit current protective device.
Background technology
Current protection is exactly to make a kind of protected mode of protective device action when electric current is more than predetermined maximum.Protection
When electric current in original paper is more than some numerical value adjusted in advance, protective device starts, and the selectivity of safety action, makes breaker
Trip or provide alarm signal.
Traditional short circuit current protective device be fuse, principle be when electric current more than specified value for a period of time after, with
Its own heat generated makes Melt molten, and to make circuit disconnect, however existing fuse is many times replaced and gets up ten
Divide trouble, and structure is complex, can not reuse.
Utility model content
The purpose of this utility model is to provide a kind of line short circuit current protective devices, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions：A kind of line short circuit current protective device, packet
It includes：Cylinder, sliding plunger, capping, fixed metal terminal, mobile metal terminal, compressed spring, connection metal wire, expanded by heating
Filler, the cylinder are cylinder, and the upper end is sealing, and lower end is opening, and the sliding plunger is slidably connected at circle
In cylinder, the capping is threadedly attached at cylinder lower ending opening, and the fixation metal terminal is fixed in capping
Heart position, the mobile metal terminal are fixed in the center of sliding plunger, and mobile metal terminal and fixed metal end
Son contact, the compressed spring are arranged in cylinder, and compressed spring both ends connect with end closure, sliding plunger on cylinder respectively
It connects, described connection metal wire one end passes through end closure on cylinder, and the other end is electrically connected on mobile metal terminal, described
Expanded by heating filler is filled in cylinder, is located in the cavity between capping and sliding plunger.
Further, the connection metal wire is spiral helicine elastic metallic conducting wire.
Further, charging port and threaded cap are provided in the capping.
Compared with prior art, the utility model has the beneficial effects that：The current protective device of the utility model, with tradition
Fuse compare, have it is simple in structure, cheap；The advantages that replacing more convenient, sensitivity higher.
Description of the drawings
Fig. 1 is the utility model overall structure diagram；
In figure：1- cylinders；2- sliding plungers；3- is covered；4- fixes metal terminal；5- moves metal terminal；6- compresses bullet
Spring；7- connection metal wires；8- expanded by heating fillers；9- charging ports and threaded cap.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of line short circuit current protective device, including：Cylinder 1, sliding are lived
Plug 2, capping 3, fixed metal terminal 4, mobile metal terminal 5, compressed spring 6, connection metal wire 7, expanded by heating filler 8,
The cylinder 1 is cylinder, and the upper end is sealing, and lower end is opening, and the sliding plunger 2 is slidably connected in cylinder 1,
The capping 3 is threadedly attached at 1 lower ending opening of cylinder, and the fixation metal terminal 4 is fixed in the center of capping 3
Position, the mobile metal terminal 5 are fixed in the center of sliding plunger 2, and mobile metal terminal 5 and fixed metal end
Son 4 contacts, and the compressed spring 6 is arranged in cylinder 1, and 6 both ends of compressed spring respectively with end closure on cylinder 1, sliding
Piston 2 connects, and described 7 one end of connection metal wire passes through end closure on cylinder 1, the other end to be electrically connected at mobile metal terminal
On 5, expanded by heating filler filling 8 is located in cylinder 1 in the cavity between capping 3 and sliding plunger 2.
Further, the connection metal wire 7 is spiral helicine elastic metallic conducting wire.
Further, charging port and threaded cap 9 are provided in the capping 3.
Operation principle：The utility model provides a kind of line short circuit current protective device, when in use, mobile metal end
Son 5 is contacted with fixed metal terminal 4, and circuit is connected, when line short, mobile metal terminal 5 and 4 electric current of fixed metal terminal
Amount greatly improves, and generates a large amount of heat, and expanded by heating filler 8 is expanded by heating, and volume increases, to push sliding plunger
2 movements, compressed spring 6 are compressed, and are moved metal terminal 5 at this time and are detached with fixed metal terminal 4, circuit disconnects；When maintenance, unload
Lower capping 3, pours out expanded by heating filler 8, then covers again, and mobile metal terminal 5 is contacted with fixed metal terminal 4, circuit
It connects, then is filled with new expanded by heating filler 8 by charging port and threaded cap 9, you can reuse, the utility model
With simple in structure, cheap；The advantages that replacing more convenient, sensitivity higher.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of line short circuit current protective device, including：Cylinder (1), sliding plunger (2), capping (3), fixed metal terminal
(4), mobile metal terminal (5), compressed spring (6), connection metal wire (7), expanded by heating filler (8), it is characterised in that：Institute
The cylinder (1) stated is cylinder, and the upper end is sealing, and lower end is opening, and the sliding plunger (2) is slidably connected at cylinder
(1) in, the capping (3) is threadedly attached at cylinder (1) lower ending opening, and the fixation metal terminal (4) is affixed
Center in capping (3), the mobile metal terminal (5) are fixed in the center of sliding plunger (2), and mobile gold
Belong to terminal (5) to contact with fixed metal terminal (4), the compressed spring (6) setting is in cylinder (1), and compressed spring (6)
Both ends are connect with end closure, sliding plunger (2) on cylinder (1) respectively, and described connection metal wire (7) one end passes through cylinder (1)
Upper end closure, the other end are electrically connected on mobile metal terminal (5), and the expanded by heating filler (8) is filled in cylinder
(1) in, it is located in the cavity between capping (3) and sliding plunger (2).
2. a kind of line short circuit current protective device according to claim 1, it is characterised in that：The connection metal wire
(7) it is spiral helicine elastic metallic conducting wire.
3. a kind of line short circuit current protective device according to claim 1, it is characterised in that：In the capping (3)
It is provided with charging port and threaded cap (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476586.2U CN207977273U (en) | 2018-04-04 | 2018-04-04 | A kind of line short circuit current protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476586.2U CN207977273U (en) | 2018-04-04 | 2018-04-04 | A kind of line short circuit current protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207977273U true CN207977273U (en) | 2018-10-16 |
Family
ID=63763498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820476586.2U Expired - Fee Related CN207977273U (en) | 2018-04-04 | 2018-04-04 | A kind of line short circuit current protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207977273U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994347A (en) * | 2019-04-08 | 2019-07-09 | 曹欢 | It is a kind of it is anti-short circuit restore fuse |
| CN112865025A (en) * | 2021-02-23 | 2021-05-28 | 马海涛 | Automatic protection distribution switchgear for avoiding short circuit |
-
2018
- 2018-04-04 CN CN201820476586.2U patent/CN207977273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994347A (en) * | 2019-04-08 | 2019-07-09 | 曹欢 | It is a kind of it is anti-short circuit restore fuse |
| CN112865025A (en) * | 2021-02-23 | 2021-05-28 | 马海涛 | Automatic protection distribution switchgear for avoiding short circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181016 Termination date: 20210404 |