CN111489943A - Plug-in fuse and installation method - Google Patents
Plug-in fuse and installation method Download PDFInfo
- Publication number
- CN111489943A CN111489943A CN202010267210.2A CN202010267210A CN111489943A CN 111489943 A CN111489943 A CN 111489943A CN 202010267210 A CN202010267210 A CN 202010267210A CN 111489943 A CN111489943 A CN 111489943A
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- Prior art keywords
- fuse
- conductor
- wire
- plug
- pressing plate
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Classifications
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- 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
- H01H85/0078—Security-related arrangements
-
- 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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/2015—Bases for supporting the fuse; Separate parts thereof for plug-in type fuses
-
- 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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
-
- 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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/205—Electric connections to contacts on the base
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Fuses (AREA)
Abstract
The invention discloses a plug-in fuse and an installation method, and belongs to the technical field of electrical appliance protection devices. The fuse comprises a shell, two ceramic bases and two square closed space structures, wherein the ceramic bases are arranged between the two square closed space structures; two wire inlet holes are symmetrically arranged on the shell; the porcelain cover and the porcelain seat form a closed structure; a cavity is arranged in the middle of the porcelain seat, a fuse link is arranged in the cavity, two ends of the fuse link are arranged on the mounting pins, second conductors are arranged at the bottoms of the mounting pins, and the second conductors and the mounting pins are arranged oppositely up and down and are connected through fasteners; a first conductor and a line pressing plate are arranged in the square closed space structure, and the first conductor is connected with the line pressing plate through an elastic connecting part; the wire pressing plate and the first conductor are provided with a threading groove which is communicated with the wire inlet hole in a front-back penetrating manner. The fuse link body of the invention replaces a fuse wire and is connected to a circuit through the mounting pin, thereby being safe and reliable, being convenient to replace and being conveniently applied to high-power lines.
Description
Technical Field
The invention belongs to the technical field of electric appliance protection devices, and particularly relates to an insertion type fuse and an installation method.
Background
The plug-in fuse is also called a ceramic plug-in fuse, which means a fuse in which a fuse link is plugged into a base by a conductive plug-in. The novel plug-in fuse has the advantages of simple structure, low price, convenience in melt replacement and the like, is widely applied to short-circuit protection of lighting circuits and small-capacity motors, but the traditional plug-in fuse is connected with the circuits through a pair of static contact, movable contact and fuse wire, the protection measures are insufficient, the problem is easy to occur when the plug-in fuse is connected into a high-power circuit, the plug-in fuse cannot be widely used, and the wiring mode is that the two side connecting ports are wired, so that dust is easy to enter, the contact is unstable, and the.
Disclosure of Invention
The invention aims to solve the technical problem of providing an insert fuse, which solves the problems of insufficient safety protection measures and small application range of the existing fuse; the plug-in fuse has the advantages of dust prevention, moisture prevention, electric leakage prevention, close contact and good safety performance. The invention aims to solve the technical problem of providing an installation method of a plug-in fuse, which has the advantages of simple installation process, firm connection and higher use safety.
In order to solve the problems, the invention adopts the following technical scheme:
a plug-in fuse comprises a shell, two ceramic bases and two square closed space structures, wherein the ceramic bases are arranged between the two square closed space structures; the outer parts of the porcelain seat and the square closed space structure are provided with a shell, and two wire inlet holes are symmetrically formed in the shell; the ceramic base is provided with a ceramic cover, and the ceramic cover and the ceramic base form a closed structure; a cavity is arranged in the middle of the porcelain seat, a fuse link is arranged in the cavity, two ends of the fuse link are arranged on the mounting pins, second conductors are arranged at the bottoms of the mounting pins, and the second conductors and the mounting pins are arranged oppositely up and down and are connected through fasteners; a first conductor and a line pressing plate are arranged in the square closed space structure, and the first conductor is connected with the line pressing plate through an elastic connecting part; and the wire pressing plate and the first conductor are provided with a wire threading groove which is communicated with the wire inlet hole in a front-back penetrating manner.
The plug-in fuse, be equipped with the fastener mounting hole on second conductor and the installation foot, the fastener is screw or bolt.
The elastic connecting part of the plug-in fuse comprises a connecting bolt, a connecting nut matched with the connecting bolt and a spiral spring sleeved on the connecting bolt, and bolt through holes for the connecting bolt are formed in the first conductor and the wire pressing plate; the connecting bolt penetrates through the bolt through hole and is in threaded connection with the connecting nut. The first conductor is connected with the line pressing plate through the bolt and the spring, and the position of the power line between the first conductor and the line pressing plate can be reasonably adjusted.
The plug-in fuse, coil spring is 1, locates the line ball board below.
The plug-in fuse is characterized in that the porcelain cover is provided with a plurality of radiating holes, and the radiating holes extend to the fuse link. Through setting up the louvre, improve radiating efficiency, guarantee fuse-link normal work, reduce the unexpected loss of fuse-link.
The cavity of the plug-in fuse is arc-shaped. The cavity in the middle of the porcelain seat is set to be arc-shaped, and the arc extinguishing chamber and the porcelain cover form an arc extinguishing chamber, so that accidents are prevented, and the safety performance of the fuse is greatly improved.
A desiccant placing cavity is arranged below the wire pressing plate of the plug-in fuse, and a desiccant is placed in the desiccant placing cavity, so that a moisture-proof function can be achieved, and a circuit is protected from being oxidized; can be stored for a long time in a humid environment, improves the safety degree and prolongs the service life.
The plug-in fuse, inlet wire hole department is equipped with the lag, lag and inlet wire hole joint. The protective sleeve can effectively prevent dust and prevent electric leakage; the protective sleeve is made of insulating materials.
The plug-in fuse, lag joint end is equipped with the annular groove, the entrance hole is equipped with the convex body, the annular groove is connected with the convex body cooperation.
The installation method of the plug-in fuse comprises the following steps:
(1) an external wire is connected into the fuse through the wire inlet hole, then the wire pressing plate moves upwards, and the external wire is pressed between the wire pressing plate and the first conductor, so that the external wire and the first conductor are electrically connected;
(2) the fuse link is installed on the installation pin, the fuse link and the installation pin are integrally placed in the cavity, the porcelain cover is additionally arranged, the fastening piece is installed, and the first conductor and the second conductor are in contact connection to achieve circuit communication.
Has the advantages that: compared with the prior art, the invention has the beneficial effects that:
(1) the invention has the advantages of dust prevention, moisture prevention, electric leakage prevention, close contact and good safety performance.
(2) The fuse link body of the invention replaces a fuse wire and is connected to a circuit through the mounting pin, thereby being safe and reliable, being convenient to replace and being conveniently applied to high-power lines.
(3) The ceramic cover and the ceramic base are both made of ceramic materials, and have the advantages of high temperature resistance and high pressure resistance; on the basis of improving the security performance advantage, keep traditional fuse simple structure, advantage low price makes it can adapt to market demand.
(4) The safety fuse has the advantages that the safety functions of connecting the mounting foot with the second conductor through the fastener, connecting the first conductor with the line pressing plate through the elastic connecting part and the like are added, so that the reliability of the fuse in wide application in life is ensured.
Drawings
Figure 1 is an isometric view of a drop fuse;
FIG. 2 is a front view of a plug-in fuse;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a left side view of the plug-in fuse;
fig. 6 is a cross-sectional view taken along line C-C of fig. 5.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
A plug-in fuse is disclosed in figures 1-6. The plug-in fuse comprises a shell 1, two ceramic bases and two square closed space structures, wherein the ceramic bases are arranged between the two square closed space structures; the outer parts of the porcelain seat and the square closed space structure are provided with a shell 1, and two wire inlet holes 9 are symmetrically arranged on the shell 1; the ceramic cover is arranged on the ceramic base, the ceramic cover and the ceramic base form a closed structure, and the ceramic cover and the ceramic base are made of ceramic materials, so that the ceramic base has the advantages of high melting point, high hardness, high wear resistance, oxidation resistance and the like; a cavity 15 is arranged in the middle of the porcelain seat, a fuse link 3 is arranged in the cavity 15, two ends of the fuse link 3 are arranged on the mounting pin 4, a second conductor 14 is arranged below the mounting pin 4, and the second conductor 14 and the mounting pin 4 are arranged up and down oppositely and connected through a fastener; a first conductor 6 and a line pressing plate 10 are arranged in the square closed space structure, and the first conductor 6 is connected with the line pressing plate 10 through an elastic connecting part; the wire pressing plate 10 and the first conductor 6 are provided with a threading groove which is communicated with the wire inlet hole 9.
The second conductor 14 and the mounting foot 4 are provided with fastener mounting holes, and the fasteners are bolts. The elastic connecting part comprises a connecting bolt 11, a connecting nut 12 matched with the connecting bolt 11 and a spiral spring sleeved on the connecting bolt 11, and bolt through holes for the connecting bolt 11 are formed in the first conductor 6 and the line pressing plate 10; the connecting bolt 11 is inserted into the bolt through hole and is in threaded fit with the connecting nut 12. The first conductor 6 is connected with the line pressing plate 10 through a bolt and a spring, so that the position of a power line between the first conductor and the line pressing plate can be reasonably adjusted; the coil spring is 1, locates the line ball board 10 below. 4 heat dissipation holes 13 are formed in the ceramic cover, and the heat dissipation holes 13 extend to the fuse link 3; through setting up the louvre, improve radiating efficiency, guarantee fuse-link normal work, reduce the unexpected loss of fuse-link. The cavity 15 is circular-arc, sets up the cavity in the middle of the porcelain seat into circular-arc, constitutes the explosion chamber with the porcelain cover, prevents accident, and the security performance of fuse promotes greatly. A drying agent placing cavity is arranged below the wire pressing plate 10, and drying agents are placed in the drying agent placing cavity, so that a moisture-proof function can be achieved, and a circuit is protected from being oxidized; can be stored for a long time in a humid environment, improves the safety degree and prolongs the service life. A protective sleeve 8 is arranged at the wire inlet hole 9; the clamping end of the protective sleeve 8 is provided with an annular groove, the wire inlet hole 9 is provided with a convex body 7, and the annular groove is connected with the convex body in a matching way; the protective sleeve can effectively prevent dust and prevent electric leakage; the protective sleeve is made of insulating materials.
After the plug-in fuse is connected into a circuit, two wires to be connected in the circuit are respectively in contact connection with two second conductors 14 in the fuse, and the two second conductors 14 are electrically communicated through the fuse link 3, so that the circuit is connected. Two installation foot 4 and two second electric conductor 14 relative up-down set up, and realize the contact through the bolt and be connected, installation foot 4 and the difficult separation of second electric conductor 14, the bolt is also difficult for droing to make installation foot 4 and the reliable and stable of the 14 contact of second electric conductor, and then guarantee the job stabilization nature and the reliability of fuse under the high voltage level, guarantee the normal reliable operation of circuit. When the current of the circuit is too large due to short circuit, fault and the like, the fuse wire in the fuse link 3 is fused to disconnect the electrical connection of the two second conductors 14, so that the whole circuit is disconnected and the protection effect is achieved; at this time, the operator can disconnect the whole circuit, rotate the bolt to release the connection between the mounting leg 4 and the second conductor 14, then take the handle 2 and the fuse link 3 out of the housing 1 together, replace the new fuse link 3, then put the handle 2 and the new fuse link 3 into the housing 1 together, and then screw the bolt to connect the mounting leg 4 and the second conductor 14 to make them contact; thus, the detachable connection of the mounting foot 4 to the second electrical conductor 14 is also achieved by means of a bolt, so that the fuse link 3 can be replaced and directly mounted, which is very convenient in operation. The mounting pin 4 and the second conductor 14 are both in a flat plate shape, so that the mounting pin 4 and the second conductor 14 are in surface contact, the contact area between the mounting pin and the second conductor is increased, and the reliability and the stability of current transmission are ensured.
In addition, the one-way wiring structure of the fuse is as follows: all set up the entrance hole 9 that link up around on the preceding terminal surface of shell 1 and the rear end face, in addition two set up relatively around with entrance hole 9, and the line ball board 10 that can reciprocate, line ball board 10 is made by conducting material, link up around having seted up in line ball board 10 and the first electric conductor 6, and the threading groove that is linked together with entrance hole 9, two electric wires penetrate two entrance holes 9 respectively, and arrange in the threading groove of two line ball boards 10 and first electric conductor 6 respectively, line ball board 10 moves up, make the electric wire compressed tightly between line ball board 10 and first electric conductor 6, in order to realize the electric wire, the electricity between the first electric conductor 6 is connected. In addition, the structure also ensures the connection strength between the wire and the first conductor 6, the contact surface between the wire and the first conductor 6 is large, the contact is reliable, and the wire is not easy to separate from the first conductor 6. A protection plate is fixedly arranged above the first electric conductor 6, the second electric conductor 14 is fixed on the protection plate, the first electric conductor 6 is in contact connection with the second electric conductor 14, and the first electric conductor and the second electric conductor can be communicated and conduct electricity in the working process.
First electric conductor 6 passes through elastic connection part with line ball board 10 and is connected, elastic connection part includes connecting bolt 11, establish the coil spring on connecting bolt 11 with connecting bolt 11 complex coupling nut 12 and cover, coil spring's use provides the elastic force who is close to first electric conductor 6 for line ball board 10, be equipped with the bolt perforation that supplies connecting bolt 11 on first electric conductor 6 and the line ball board 10, connecting bolt 11 wears to establish in the bolt perforation and cooperates with coupling nut 12 spiro union. By adopting the structure of the invention, the power line is connected into the gap between the first conductor 6 and the line pressing plate 10, and the first conductor 6 and the line pressing plate 10 are in close contact with the power line under the action of the helical spring in the elastic connecting part, thereby ensuring the reliability of electric connection. The number of the coil springs is 1, and below the tension disc 10.
The plug-in fuse adopts the fuse link to replace a fuse wire and is connected to a circuit through the mounting pin, so that the plug-in fuse is safe and reliable, is convenient to replace and is conveniently applied to a high-power line; the reliability of the fuse in wide application in life is ensured by adding multiple safety functions of connecting the mounting foot with the second conductor through the fastener, connecting the first conductor with the line pressing plate through the elastic connecting part and the like; the ceramic cover and the ceramic base are both made of ceramic materials, and have the advantages of high temperature resistance and high pressure resistance; on the basis of improving the security performance advantage, keep traditional fuse simple structure, advantage low price makes it can adapt to market demand.
Claims (10)
1. A plug-in fuse is characterized by comprising a shell (1), two ceramic bases and two square closed space structures, wherein the ceramic bases are arranged between the two square closed space structures; the outer parts of the porcelain seat and the square closed space structure are provided with a shell (1), and two wire inlet holes (9) are symmetrically formed in the shell (1); the ceramic base is provided with a ceramic cover, and the ceramic cover and the ceramic base form a closed structure; a cavity (15) is formed in the middle of the porcelain seat, a fuse link (3) is arranged in the cavity (15), two ends of the fuse link (3) are arranged on the mounting pins (4), a second conductor (14) is arranged at the bottom of the mounting pins (4), and the second conductor (14) and the mounting pins (4) are arranged oppositely up and down and are connected through fasteners; a first conductor (6) and a line pressing plate (10) are arranged in the square closed space structure, and the first conductor (6) is connected with the line pressing plate (10) through an elastic connecting part; threading grooves which are communicated with the wire inlet holes (9) are formed in the wire pressing plate (10) and the first electric conductor (6) in a front-back penetrating mode.
2. A plug-in fuse according to claim 1, characterised in that the second conductor (14) and the mounting foot (4) are provided with fastener mounting holes, the fasteners being screws or bolts.
3. An insert fuse according to claim 1, characterized in that the resilient connecting element comprises a connecting bolt (11), a connecting nut (12) cooperating with the connecting bolt (11) and a helical spring arranged around the connecting bolt (11), the first electrical conductor (6) and the tension disc (10) being provided with bolt holes for the connecting bolt (11); the connecting bolt (11) penetrates through the bolt through hole and is in threaded fit with the connecting nut (12).
4. A plug-in fuse according to claim 3, characterised in that the number of coil springs is 1, which is arranged below the tension disc (10).
5. An insert fuse as claimed in claim 1, characterised in that the porcelain cover is provided with a number of heat dissipation apertures (13), which heat dissipation apertures (13) extend to the fuse link (3).
6. An insert fuse according to claim 1, characterized in that the cavity (15) is circular-arc shaped.
7. A plug-in fuse according to claim 1, characterised in that a desiccant receiving chamber is provided below the tension disc (10), in which desiccant is provided.
8. A plug-in fuse as claimed in claim 1, characterized in that a protective sleeve (8) is arranged in the entry opening (9), the protective sleeve (8) engaging in the entry opening (9).
9. A plug-in fuse as claimed in claim 8, characterized in that the protective sleeve (8) is provided at its clamping end with an annular groove, and the wire entry hole (9) is provided with a projection (7), the annular groove being in mating connection with the projection.
10. A method of installing an insert fuse as recited in claim 1, including the steps of:
(1) an external wire is connected into the fuse through the wire inlet hole, then the wire pressing plate (10) moves upwards, and the external wire is pressed between the wire pressing plate (10) and the first conductor (6), so that the external wire and the first conductor are electrically connected;
(2) the fuse link (3) is installed on the installation pin (4), the fuse link (3) and the installation pin (4) are integrally placed in the cavity, the porcelain cover is additionally arranged, the fastening piece is installed, and the first conductor (6) and the second conductor (14) are in contact connection to achieve circuit communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267210.2A CN111489943A (en) | 2020-04-07 | 2020-04-07 | Plug-in fuse and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267210.2A CN111489943A (en) | 2020-04-07 | 2020-04-07 | Plug-in fuse and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111489943A true CN111489943A (en) | 2020-08-04 |
Family
ID=71810884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010267210.2A Pending CN111489943A (en) | 2020-04-07 | 2020-04-07 | Plug-in fuse and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111489943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086222A (en) * | 2020-08-25 | 2020-12-15 | 南京鑫瀚瑞电子有限公司 | Wire with fuse and fuse mounting method |
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| US20090247015A1 (en) * | 2008-03-31 | 2009-10-01 | Sumitomo Wiring Systems, Ltd | Electrical component holder |
| CN102394201A (en) * | 2011-11-22 | 2012-03-28 | 邹腾 | Connecting terminal |
| CN103944124A (en) * | 2014-04-29 | 2014-07-23 | 波瑞电气有限公司 | Rapid and safe bus connecting assembly |
| CN204577616U (en) * | 2015-05-27 | 2015-08-19 | 上升电力科技有限公司 | Prevent the connecting cable clamp that main line comes off |
| CN105140082A (en) * | 2015-09-01 | 2015-12-09 | 上海爱浦克施电力科技股份有限公司 | Fuse |
| CN206363979U (en) * | 2016-12-01 | 2017-07-28 | 上海爱浦克施电力科技股份有限公司 | Single channel fuse |
| CN206441885U (en) * | 2017-02-06 | 2017-08-25 | 山东领能电力工程有限公司 | A kind of easily changeable electronic equipment High voltage output safety lead device |
| CN110379688A (en) * | 2019-06-27 | 2019-10-25 | 广东电网有限责任公司佛山供电局 | For DC source output short circuit protective device |
| CN110635261A (en) * | 2019-08-23 | 2019-12-31 | 贵州电网有限责任公司 | Wire lapping device |
-
2020
- 2020-04-07 CN CN202010267210.2A patent/CN111489943A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090247015A1 (en) * | 2008-03-31 | 2009-10-01 | Sumitomo Wiring Systems, Ltd | Electrical component holder |
| CN102394201A (en) * | 2011-11-22 | 2012-03-28 | 邹腾 | Connecting terminal |
| CN103944124A (en) * | 2014-04-29 | 2014-07-23 | 波瑞电气有限公司 | Rapid and safe bus connecting assembly |
| CN204577616U (en) * | 2015-05-27 | 2015-08-19 | 上升电力科技有限公司 | Prevent the connecting cable clamp that main line comes off |
| CN105140082A (en) * | 2015-09-01 | 2015-12-09 | 上海爱浦克施电力科技股份有限公司 | Fuse |
| CN206363979U (en) * | 2016-12-01 | 2017-07-28 | 上海爱浦克施电力科技股份有限公司 | Single channel fuse |
| CN206441885U (en) * | 2017-02-06 | 2017-08-25 | 山东领能电力工程有限公司 | A kind of easily changeable electronic equipment High voltage output safety lead device |
| CN110379688A (en) * | 2019-06-27 | 2019-10-25 | 广东电网有限责任公司佛山供电局 | For DC source output short circuit protective device |
| CN110635261A (en) * | 2019-08-23 | 2019-12-31 | 贵州电网有限责任公司 | Wire lapping device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086222A (en) * | 2020-08-25 | 2020-12-15 | 南京鑫瀚瑞电子有限公司 | Wire with fuse and fuse mounting method |
| CN112086222B (en) * | 2020-08-25 | 2021-12-14 | 南京鑫瀚瑞电子有限公司 | Wire with fuse and fuse mounting method |
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| PB01 | Publication | ||
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Application publication date: 20200804 |