CN104332370A - Novel radial easy-to-assemble-type organic matter temperature fuse - Google Patents
Novel radial easy-to-assemble-type organic matter temperature fuse Download PDFInfo
- Publication number
- CN104332370A CN104332370A CN201410359907.7A CN201410359907A CN104332370A CN 104332370 A CN104332370 A CN 104332370A CN 201410359907 A CN201410359907 A CN 201410359907A CN 104332370 A CN104332370 A CN 104332370A
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- CN
- China
- Prior art keywords
- silver
- plated
- pin
- plated copper
- guide pillar
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
- H01H85/0415—Miniature fuses cartridge type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
- H01H85/147—Parallel-side contacts
Abstract
The invention relates to a novel radial easy-to-assemble-type organic matter temperature fuse comprising a plastic housing, a pin positioning block, a pin a and a pin b. A force-bearing rib is arranged above the plastic housing; the pin positioning block is arranged above the plastic housing and carries out positioning through the force-bearing rib; a copper sheet a, an organic matter pressing block, a copper sheet b, a thick spring, a silver-plated guide pillar and a thin spring are sequentially arranged between the bottom of the plastic housing and the pin positioning block from the bottom up; the thick spring is arranged between the copper sheet b and the silver-plated guide pillar in a compressed manner; the thin spring is arranged between the silver-plated guide pillar and the pin positioning block in a compressed manner; the two sides of the pin positioning block are provided with two corresponding silver-plated copper block installation holes respectively; the two silver-plated copper block installation holes are internally equipped with a silver-plated copper block a and a silver-plated copper block b respectively; the lower end of the silver-plated copper block a and the lower end of the silver-plated copper block b are connected to the silver-plated guide pillar; and the upper end of the silver-plated copper block a and the upper end of the silver-plated copper block b are connected to the pin a and the pin b respectively. The organic matter temperature fuse is novel and unique in design and has excellent electrical and mechanical performances.
Description
Technical field
The present invention relates to a kind of Thermal Cutoffs, specifically refer to that a kind of structure is unique, easily assemble, installation easy to use, there is the radial direction easy assembly type organic substance Thermal Cutoffs of remarkable anti-surge energy.
Background technology
Fuse is for preventing the electricity heating excessively over-temperature protection device of breaking out of fire.Organic substance Thermal Cutoffs is fuse comparatively conventional at present.The shell of traditional organic substance fuse is generally metal shell (copper is silver-plated), the two ends of shell are connected to lead-in wire, the organic substance temperature sensor that its inside is provided with and bulky spring coordinate and are connected with the lead-in wire of front end by starlike reed (being also metal eight calvus), during work, electric current flows into from front end lead-in wire and flows out through rear end lead-in wire after starlike reed, metal shell; Or flow into from rear end lead-in wire, flow out along front end lead-in wire after metal shell, starlike reed.When ambient temperature is increased to organic substance temperature sensor fusing point, organic substance dissolves, and starlike reed and front end will go between separation cut circuit by hairspring, thus play a protective role.
The starlike reed (metal eight calvus) of traditional organic substance fuse and the front end pier nose that goes between is point cantact.When cutting off circuit, starlike reed must movement reliably, so its metal eight calvus is usually less than 0.2mm.This brings potential safety hazard with regard to the occasion applying to big current for fuse.When larger electric current flows through front end lead-in wire pier nose and starlike reed, fuse action when cutting off circuit, starlike reed may be welded on lead-in wire pier nose by heavy current galvano-cautery; Again due to eight claws of starlike reed and the contact resistance of metal shell inconsistent; the electric current moment causing indivedual calvus to flow through is excessive; be welded on metal-back inwall; and make Thermal Cutoffs reliably cannot disconnect and cut off circuit, now Thermal Cutoffs also just loses its defencive function.And Thermal Cutoffs is safety device, the production and life of giving people are brought great danger by above-mentioned abnormal generation.
And during traditional organic substance fuse work, current path needs the metal shell through fuse, therefore user often will add cover one insulating barrier, as heat-shrinkable T bush or fiberglass tubes when installing Thermal Cutoffs on fuse shell.This not only adds the unnecessary operation in production process, and increase the consumption of material, also increase artificial waste.Traditional organic substance fuse is due to the restriction of self structure, and also there is assembling speed slow, the problem that production efficiency is low, cannot adapt to the demand of modern production.
Summary of the invention
The invention reside in and a kind of novel radial direction easy assembly type organic substance Thermal Cutoffs is provided, its novel unique design, this Thermal Cutoffs is made not only to have excellent electric and mechanical performance, the present invention also fully studies and considers the assembling of product, makes properties of product and manufacturing characteristics all have better lifting.
Technical scheme provided by the invention is as follows:
A kind of novel radial direction easy assembly type organic substance Thermal Cutoffs, comprise plastic casing, pin locating piece, pin a and pin b, the bottom of described plastic casing is provided with sealing, the top of plastic casing is provided with load muscle, and described pin locating block device is positioned in the top of plastic casing by described load muscle; Copper sheet a, organic substance briquetting, copper sheet b, bulky spring, silver-plated guide pillar, hairspring is provided with from the bottom up successively bottom described plastic casing and between pin locating piece, described bulky spring is extruded and is installed between copper sheet b and silver-plated guide pillar, and described hairspring is extruded and is installed between silver-plated guide pillar and pin locating piece; The both sides of described pin locating piece are provided with corresponding two silver-plated copper block assembly holes, in two silver-plated copper block assembly holes, device has silver-plated copper billet a and silver-plated copper billet b respectively, the lower end of described silver-plated copper billet a and silver-plated copper billet b is all connected to described silver-plated guide pillar, and the upper end of silver-plated copper billet a and silver-plated copper billet b is connected respectively to described pin a and pin b; The electroplate layer thickness of described silver-plated guide pillar, silver-plated copper billet a and silver-plated copper billet b is 1-6um; The top of described plastic casing is provided with seals resin accordingly.
Be provided with a bronze medal shell bottom described plastic casing, described copper sheet a, organic substance briquetting, copper sheet b, bulky spring, silver-plated guide pillar are installed in described copper shell in order from the bottom up.
Described pin locating piece is lower narrow wide cone-shaped, and pin locating piece top diameter equals plastic casing internal diameter.
Described pin a and pin b can be circle, triangle, square or oval.
From foregoing description:
During place in circuit of the present invention work, when ambient temperature is increased to organic substance temperature sensor fusing point, organic substance briquetting dissolves, and under the effect of bulky spring and hairspring, silver-plated guide pillar moves down, and Thermal Cutoffs disconnects, thus cuts off circuit; Silver-plated guide pillar does not hinder when moving down, and situation that is stuck or that be welded can not occur, and effectively ensures its fail safe used.
The galvanic contact of the easy assembly type organic substance Thermal Cutoffs of this radial direction and disconnection position are the bottom opening position of silver-plated copper billet a, silver-plated copper billet b, electrocorrosion-resisting copper material of good performance all selected by silver-plated copper billet a, silver-plated copper billet b and silver-plated guide pillar, the silver coating that its surface reaches 1-6um can guarantee that it only has very little contact resistance, reduces the impact that Thermal Cutoffs self-heating uses product; Silver-plated copper billet a, silver-plated copper billet b and silver-plated guide pillar can tolerate larger operating current, can bear larger 8/20us surge impact electric current and 1.2/50us surge voltage, and its anti-surge can be superior.
This radial direction easily assembly type organic substance Thermal Cutoffs adopts plastic casing, because plastic casing is insulator, there is good compressive resistance, so puzzlement when substantially having stopped traditional organic type Thermal Cutoffs user installation, client is not only helped to solve installation question, and decrease material and the cost of labor of client, greatly improve the using value of product, there is vast promotion prospect.
This radial direction easily assembly type organic substance Thermal Cutoffs increases by a load muscle above plastic casing, and devise corresponding cone-shaped pin locating piece for it especially and closely cooperate with it, complete the fixing and positioning function of each components and parts in Thermal Cutoffs plastic casing by the mode of mechanical snap, improve assembling speed and the production efficiency of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is part explosive view of the present invention.
Fig. 3 is impulse current method of testing schematic diagram.
Fig. 4 is surge voltage testing experiment circuit diagram.
Fig. 5 is standard impulse current In 8/20us oscillogram.
Fig. 6 is standard impulse voltage 1.2/50 oscillogram.
Embodiment
A kind of preferred embodiment of the present invention:
With reference to figure 1, Fig. 2, a kind of novel radial direction easy assembly type organic substance Thermal Cutoffs, comprises plastic casing (1), pin locating piece (2), pin a(3) and pin b(4), described pin a(3) and pin b(4) be circular.
Described pin locating piece (2) is lower narrow wide cone-shaped, pin locating piece (2) top diameter equals plastic casing (1) internal diameter, the bottom of described plastic casing (1) is provided with sealing, the top of plastic casing (1) is provided with load muscle (5), and the top that described pin locating piece (2) is installed on plastic casing (1) is positioned by described load muscle (5).This radial direction easily assembly type organic substance Thermal Cutoffs increases by a load muscle (5) in the top of plastic casing (1), and devise corresponding cone-shaped pin locating piece (2) for it especially and closely cooperate with it, complete the fixing and positioning function of each components and parts in Thermal Cutoffs plastic casing (1) by the mode of mechanical snap, improve assembling speed and the production efficiency of product.
Described plastic casing (1) bottom and pin locating piece (2) between be provided with copper sheet a(6 successively from the bottom up), organic substance briquetting (7), copper sheet b(8), bulky spring (9), silver-plated guide pillar (10), hairspring (11), described bulky spring (9) is extruded and is installed on copper sheet b(8) and silver-plated guide pillar (10) between, described hairspring (11) is extruded and is installed between silver-plated guide pillar (10) and pin locating piece (2); Described plastic casing (1) bottom is provided with a bronze medal shell (12), described copper sheet a(6), organic substance briquetting (7), copper sheet b(8), bulky spring (9), silver-plated guide pillar (10) be installed in described copper shell (12) in order from the bottom up.Be copper sheet a(6 by copper shell (12)), organic substance briquetting (7), copper sheet b(8), the element such as bulky spring (9), silver-plated guide pillar (10) provides the operational environment of a rigidity, guarantee that component devices can cooperatively interact, complete its set function.
The both sides of described pin locating piece (2) are provided with corresponding two silver-plated copper block assembly holes (2-1), in two silver-plated copper block assembly holes (2-1), device has silver-plated copper billet a(13 respectively) and silver-plated copper billet (14), described silver-plated copper billet a(13) and silver-plated copper billet b(14) lower end be all connected to described silver-plated guide pillar (10), silver-plated copper billet a(13) and silver-plated copper billet b(14) upper end be connected respectively to described pin a(3) and pin b(4); Described silver-plated guide pillar (10), silver-plated copper billet a(13) and silver-plated copper billet b(14) electroplate layer thickness be 6um; The top of described plastic casing is provided with seals resin (15) accordingly.
Described silver-plated copper billet a(13), silver-plated copper billet b(14) and silver-plated guide pillar (10) all select electrocorrosion-resisting copper material of good performance, the silver coating that its surface reaches 6um can guarantee its very little contact resistance, reduces the impact that Thermal Cutoffs self-heating uses product.Through theory calculate and experimental verification, silver-plated copper billet a(13), silver-plated copper billet b(14) and silver-plated guide pillar (10) can larger operating current be tolerated, can bear larger 8/20us surge impact electric current and 1.2/50us surge voltage, therefore this novel radial direction is easily assembled organic type Thermal Cutoffs and is had good anti-surge energy.
During place in circuit of the present invention work, its current path: 1. from pin a(3) flow into, through silver-plated copper billet a(13), silver-plated guide pillar (10) and silver-plated copper billet b(14) after, then from pin b(4) outflow; 2. from pin b(4) flow into, through silver-plated copper billet b(14), silver-plated guide pillar (10) and silver-plated copper billet a(13) after, then from pin a(3) outflow.When ambient temperature is increased to organic substance temperature sensor fusing point, organic substance briquetting (7) dissolves, and under the effect of bulky spring (9) and hairspring (11), silver-plated guide pillar (10) moves down, and Thermal Cutoffs disconnects, thus cuts off circuit.Silver-plated guide pillar (10) does not hinder when moving down, and situation that is stuck or that be welded can not occur, and effectively ensures its fail safe used.
experiment detects and experimental data
Above-mentioned novel radial direction easily assembles organic type Thermal Cutoffs after the test of the surge impact laboratory of authorized by state, confirms that its performance safety is reliable, meets the national standard that surge experiment is relevant.It is YD/T 1235.1 and YD/T 1235.2 communication bureau (station) low-voltage distribution system surge protector with reference to testing standard.
1, standard impulse current In tests
Applying 15 waveforms to this product is the impulse current of 8/20us.15 Secondary Shocks applied, being divided into 3 stages carries out, and each stage impacts 5 times, and the time interval between two Secondary Shocks is 50-60 second, and the time interval in every two stages is 25-30 minute, as shown in Figure 3.
2, surge voltage test
Adopt the hookup shown in Fig. 4, this product is applied to the 1.2/50us surge voltage of 10 times, the time interval of adjacent two Secondary Shocks should be enough to make this sample return to ambient temperature, but the longest should more than 5 minutes.
3, impulse current and High Voltage Impulse Waveform
As shown in Figure 5, standard impulse voltage 1.2/50 oscillogram in surge impact experiment as shown in Figure 6 for standard impulse current In 8/20us oscillogram in surge impact experiment.
4, experimental data
(1), standard impulse current In 8/20us test data is as following table
(2), surge voltage 1.2/50us test data is as following table
In sum, this novel radial organic type Thermal Cutoffs novel structure, mounting means is simple and reliable, be convenient to assembling, produce, have excellent electrically and mechanical performance, its induced environment temperature the breaking capacity cutting off operating current are given prominence to, and have good applying value and development prospect.
Above are only a specific embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. a novel radial direction easy assembly type organic substance Thermal Cutoffs, comprises plastic casing, pin locating piece, pin a and pin b, it is characterized in that:
The bottom of described plastic casing is provided with sealing, and the top of plastic casing is provided with load muscle, and described pin locating block device is positioned in the top of plastic casing by described load muscle;
Copper sheet a, organic substance briquetting, copper sheet b, bulky spring, silver-plated guide pillar, hairspring is provided with from the bottom up successively bottom described plastic casing and between pin locating piece, described bulky spring is extruded and is installed between copper sheet b and silver-plated guide pillar, and described hairspring is extruded and is installed between silver-plated guide pillar and pin locating piece;
The both sides of described pin locating piece are provided with corresponding two silver-plated copper block assembly holes, in two silver-plated copper block assembly holes, device has silver-plated copper billet a and silver-plated copper billet b respectively, the lower end of described silver-plated copper billet a and silver-plated copper billet b is all connected to described silver-plated guide pillar, and the upper end of silver-plated copper billet a and silver-plated copper billet b is connected respectively to described pin a and pin b;
The electroplate layer thickness of described silver-plated guide pillar, silver-plated copper billet a and silver-plated copper billet b is 1-6um;
The top of described plastic casing is provided with seals resin accordingly.
2. the novel radial direction of one according to claim 1 easy assembly type organic substance Thermal Cutoffs, it is characterized in that: be provided with a bronze medal shell bottom described plastic casing, described copper sheet a, organic substance briquetting, copper sheet b, bulky spring, silver-plated guide pillar are installed in described copper shell in order from the bottom up.
3. the novel radial direction of one according to claim 1 easy assembly type organic substance Thermal Cutoffs, is characterized in that: described pin locating piece is lower narrow wide cone-shaped, and pin locating piece top diameter equals plastic casing internal diameter.
4. the novel radial direction of one according to claim 1 easy assembly type organic substance Thermal Cutoffs, is characterized in that: described pin a and pin b can be circle, triangle, square or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359907.7A CN104332370B (en) | 2014-07-25 | 2014-07-25 | A kind of radial direction is easily assembled organic matter Thermal Cutoffs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359907.7A CN104332370B (en) | 2014-07-25 | 2014-07-25 | A kind of radial direction is easily assembled organic matter Thermal Cutoffs |
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| Publication Number | Publication Date |
|---|---|
| CN104332370A true CN104332370A (en) | 2015-02-04 |
| CN104332370B CN104332370B (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410359907.7A Active CN104332370B (en) | 2014-07-25 | 2014-07-25 | A kind of radial direction is easily assembled organic matter Thermal Cutoffs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016145642A1 (en) * | 2015-03-19 | 2016-09-22 | Cooper Technologies Company | High interrupting current subminiature fuse and method of manufacture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047449U (en) * | 1989-02-02 | 1989-11-08 | 南京太平专利技术实验工厂 | Organic compound type overtemperature fuse |
| CN203103254U (en) * | 2013-02-25 | 2013-07-31 | 漳州雅宝电子有限公司 | Surge-resistant type thermal fuse |
| JP3185784U (en) * | 2013-06-13 | 2013-09-05 | 株式会社アサヒ電機製作所 | Dual element fuse |
-
2014
- 2014-07-25 CN CN201410359907.7A patent/CN104332370B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047449U (en) * | 1989-02-02 | 1989-11-08 | 南京太平专利技术实验工厂 | Organic compound type overtemperature fuse |
| CN203103254U (en) * | 2013-02-25 | 2013-07-31 | 漳州雅宝电子有限公司 | Surge-resistant type thermal fuse |
| JP3185784U (en) * | 2013-06-13 | 2013-09-05 | 株式会社アサヒ電機製作所 | Dual element fuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016145642A1 (en) * | 2015-03-19 | 2016-09-22 | Cooper Technologies Company | High interrupting current subminiature fuse and method of manufacture |
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| Publication number | Publication date |
|---|---|
| CN104332370B (en) | 2019-06-11 |
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Address after: No.6, Hongjian Road, jiaomei Town, Taiwan investment zone, Zhangzhou City, Fujian Province, 363000 Patentee after: Zhangzhou Yabao Electronics Co.,Ltd. Address before: 363107 Hongjian Industrial Zone, Longchi Development Zone, Zhangzhou City, Fujian Province Patentee before: ZHANGZHOU YABAO ELECTRONIC Co.,Ltd. |
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