CN204375688U - P type fuse - Google Patents
P type fuse Download PDFInfo
- Publication number
- CN204375688U CN204375688U CN201520128022.6U CN201520128022U CN204375688U CN 204375688 U CN204375688 U CN 204375688U CN 201520128022 U CN201520128022 U CN 201520128022U CN 204375688 U CN204375688 U CN 204375688U
- Authority
- CN
- China
- Prior art keywords
- screwed hole
- pole plate
- boss
- screw thread
- model
- 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
Links
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 2
- 239000006004 Quartz sand Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a kind of P type fuse, comprise the pole plate with boss, the boss of pole plate offers screwed hole, the boss of pole plate offers the screwed hole successively decreased one by one at least two apertures successively towards pole plate.Boss of the present utility model has at least two screwed holes successively decreased step by step, because pole plate is formed by metal manufacture all over; So, the circuit thread head of different-diameter is all can be threaded in the screwed hole of boss.
Description
Technical field
The utility model relates to a kind of fuse, and more particularly, it relates to a kind of P type fuse.
Background technology
P type fast acting fuse is the one in fast acting fuse, and fast acting fuse is mainly used in the short-circuit protection of semiconductor rectifier cell or rectifying device.Because the overload capacity of semiconductor element is very low.Larger overload current can only be born in very short time, therefore require that short-circuit protection has the ability of quick fuse.The structure of fast acting fuse is substantially identical with enclosed fuse of filleding and endcloseing cartridge fuse-link.
Wherein, P type fast acting fuse comprises the shell, melt, the conductive plate that have through hole; Melt comprises two pole plates and the fusible core between pole plate.
Melt is placed in through hole by fast acting fuse in the process manufactured; Again quartz sand is filled in through hole, with fusible core is coated and seal; Side by side, two pole plates are positioned at the open at both ends place of through hole, do not covered by quartz sand completely, filling due to quartz sand is the bonding of particle, then need the open-mouth by conductive plate being fixed on through hole, quartz sand and pole plate are worked as and hides in through hole, be electrically connected between pole plate and conductive plate.Socket has two conductive feet, and electrical connection is positioned at two pieces of conductive plates at shell two ends respectively.
In prior art, there is the P type fast acting fuse directly accessed to by two pole plates in circuit, its conductive plate center offers through hole, and pole plate is provided with boss towards the side of conductive plate, boss extends to outside pole plate through through hole, offers screwed hole at the top of boss simultaneously; So, circuit is screwed in screwed hole by thread head and realizes electrical connection.
The screwed hole that existing P type fast acting fuse is offered on its boss is all that aperture is single, is not easy to coordinate different circuit thread heads;
So in order to be applicable to different circuit thread heads, usually the pole plate of production plurality of specifications and size is needed, and in order to improve this type of small dimension of pole plate, the production efficiency of large batch of metalwork, usual factory adopts mould to build shaping mode to manufacture pole plate, the pole plate producing different size then needs the mould manufacturing different size in advance, adds cost; Secondly, the pole plate of different size, for the pole plate of same specification, in sales process, will inevitably produce too much sale tail product, namely store goods, cause the waste of hoarding.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide one to be applicable to various lines thread head, reduces the model of producing product, enhances productivity, and reduces the P type fast acting fuse of businessman's hedge inventory amount.
For achieving the above object, the utility model provides following technical scheme:
A kind of P type fuse, comprise the pole plate with boss, the boss of described pole plate offers screwed hole, the boss of described pole plate offers the screwed hole successively decreased one by one at least two apertures successively towards pole plate.
Preferably, the boss of described pole plate has been threaded screw thread siphunculus, and described screw thread siphunculus has the external screw thread coordinated with described screwed hole, and its endoporus has internal thread.
Preferably, the boss of described pole plate once offers the first screwed hole and the second screwed hole towards pole plate, and the aperture of described first screwed hole is greater than the aperture of described second screwed hole; The external screw thread of described tapped through hole comprises the first external screw thread coordinated with described first screwed hole and the second external screw thread coordinated with described second screwed hole.
Preferably, protecting sleeve for thread is arranged with in the internal thread of described screw thread siphunculus.
Compared with prior art, boss of the present utility model has at least two screwed holes successively decreased step by step, because pole plate is formed by metal manufacture all over; So, the circuit thread head of different-diameter is all can be threaded in the screwed hole of boss.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model P type fuse embodiment;
Fig. 2 is the part figure of the utility model P type fuse embodiment;
Fig. 3 is the A portion enlarged drawing of Fig. 2;
Fig. 4 is the part figure of the utility model P type fuse embodiment;
Fig. 5 is the part figure of the utility model P type fuse embodiment.
Accompanying drawing marks: 1, shell; 2, pole plate; 21, boss; 211, the first screwed hole; 212, the second screwed hole; 22, screw thread siphunculus; 221, the first external screw thread; 222, the second external screw thread; 223, internal thread; 3, conductive plate.
Embodiment
Referring to figs. 1 through Fig. 5, the utility model P type fast acting fuse embodiment is described further.
A kind of P type fast acting fuse, comprises the shell 1, melt, the conductive plate 3 that have through hole; Melt comprises two pole plates 2 and the fusible core between pole plate 2.
The pole plate 2 of the present embodiment has boss 21 and is through pole plate 2, and boss 21 offers screwed hole, be used for screwing in circuit thread head so that series connection in the line.
The technical essential of the present embodiment is, the screwed hole of boss 21 is oppositely provided with the first screwed hole 211 and the second screwed hole 212 by uncovered successively towards pole plate 2; The aperture of the first screwed hole 211 is greater than the second screwed hole 212, so the present embodiment can adaptive two kinds of circuit thread heads, the circuit thread head namely spun with the first screwed hole 211 and the second screwed hole 212 spun through the first screwed hole 211 and the second screwed hole 212 by above-mentioned design.
Meanwhile, the outer wall of the screw thread siphunculus 22 of the present embodiment has the first external screw thread 221 and the second external screw thread 222 with the first screwed hole 211 and the second screwed hole 212 adaptation, and within it wall is provided with internal thread 223.So, when the diameter of circuit thread head is less than the second screwed hole 212, screw thread siphunculus 22 side by side can be screwed in the first screwed hole 211 and the second screwed hole 212, now circuit thread head be screwed in the endoporus to screw thread siphunculus 22, be connected with its inner hole thread and just can realize fixing.By above-mentioned design, the present embodiment is applicable to the circuit thread head of three kinds of different-diameters.
In addition, because screw thread siphunculus 22 can take apart, so screw thread siphunculus 22 has industry characteristics independently.The production process of independent production screw thread siphunculus 22 and shunting the present embodiment entirety; Meanwhile, when using screw thread siphunculus 22, the first screwed hole 211 and the second screwed hole 212 all can be protected effectively, prevent its corrosion passivation, extend the useful life of the present embodiment entirety.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a P type fuse, comprises the pole plate with boss, the boss of described pole plate offers screwed hole, it is characterized in that, the boss of described pole plate is offered the screwed hole successively decreased one by one at least two apertures successively towards pole plate by its surface.
2. P type fuse according to claim 1, is characterized in that, the boss of described pole plate has been threaded screw thread siphunculus, and described screw thread siphunculus has the external screw thread coordinated with described screwed hole, and its endoporus has internal thread.
3. P type fuse according to claim 2, is characterized in that, the boss of described pole plate has and offers the first screwed hole and the second screwed hole successively towards pole plate, and the aperture of described first screwed hole is greater than the aperture of described second screwed hole; The external screw thread of described tapped through hole comprises the first external screw thread coordinated with described first screwed hole and the second external screw thread coordinated with described second screwed hole.
4. P type fuse according to claim 2, is characterized in that, the internal thread of described screw thread siphunculus has been threaded protecting sleeve for thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128022.6U CN204375688U (en) | 2015-03-06 | 2015-03-06 | P type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128022.6U CN204375688U (en) | 2015-03-06 | 2015-03-06 | P type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204375688U true CN204375688U (en) | 2015-06-03 |
Family
ID=53331884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520128022.6U Expired - Fee Related CN204375688U (en) | 2015-03-06 | 2015-03-06 | P type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204375688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102462414B1 (en) * | 2022-08-08 | 2022-11-03 | 주식회사 세화 | Electronic Automatic Block Control System and the control method using it |
-
2015
- 2015-03-06 CN CN201520128022.6U patent/CN204375688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102462414B1 (en) * | 2022-08-08 | 2022-11-03 | 주식회사 세화 | Electronic Automatic Block Control System and the control method using it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150603 |