CN212485266U - Novel overcurrent and overtemperature protection element - Google Patents
Novel overcurrent and overtemperature protection element Download PDFInfo
- Publication number
- CN212485266U CN212485266U CN202021583551.2U CN202021583551U CN212485266U CN 212485266 U CN212485266 U CN 212485266U CN 202021583551 U CN202021583551 U CN 202021583551U CN 212485266 U CN212485266 U CN 212485266U
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- cap
- wire
- long metal
- porcelain tube
- metal cap
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Abstract
The utility model discloses a novel overcurrent excess temperature protection component, including the tail wire cap, the porcelain tube, the sleeve pipe, the resistance wire, long metal cap, the membrane fuse, the head wire cap, the porcelain tube is installed in the sleeve pipe the inside, be provided with the resistance wire on the winding porcelain tube in the clearance between porcelain tube and the sleeve pipe, the one end and the tail wire cap circuit connection of resistance wire, the other end and long metal cap circuit connection, long metal cap is provided with the recess that inserts the porcelain tube, in the recess was inserted to the one end of porcelain tube, the edge circuit connection of resistance wire and long metal cap recess, the one end that the membrane fuse does not have the pin insert the centre of long metal cap and with long metal cap interference fit, the other end and with head wire cap circuit connection, long metal cap and membrane fuse circuit connection. The beneficial effects of the utility model reside in that: adopt the membrane fuse to replace the temperature fuse, the utility model discloses production technology is ripe, has reduced manufacturing cost, has improved the degree of automation of product production technology.
Description
Technical Field
The utility model relates to a fuse technical field especially relates to a novel overcurrent excess temperature protection component.
Background
Adopt the temperature fuse to do the excess temperature protection wire resistor of fuse, the manufacturing cost of temperature fuse is higher to and the temperature fuse pin is eccentric, influences production efficiency, leads to the cost of whole product to be unfavorable for the popularization and application in market to and the welding process of temperature fuse pin and metal cap is difficult to control, has the hidden danger of rosin joint.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel overcurrent and overtemperature protection element solves the problem that overcurrent and overtemperature protection element cost is too high.
In order to solve the technical problem, the utility model provides a novel overcurrent and overtemperature protection element, which comprises a tail wire cap, a porcelain tube, a sleeve, a resistance wire, a long metal cap, a film fuse and a head wire cap; the ceramic tube is arranged in the sleeve, and a resistance wire wound on the ceramic tube is arranged in a gap between the ceramic tube and the sleeve; one end of the resistance wire is connected with the tail wire cap circuit, and the other end of the resistance wire is connected with the long metal cap circuit; the long metal cap is provided with a groove inserted into the ceramic tube, one end of the ceramic tube is inserted into the groove, the resistance wire is connected with a marginal circuit of the groove of the long metal cap, one end of the membrane fuse without pins is inserted into the middle of the long metal cap and is in interference fit with the long metal cap, the other end of the membrane fuse is connected with a head wire cap circuit, and the long metal cap is connected with the membrane fuse circuit.
In the structure, the tail wire cap and the head wire cap are hard metal wires convenient for the plug-in.
In the above structure, the centerline of the tail line cap is the same as the centerline of the head line cap.
In the structure, insulating paint for insulation is coated in the tail wire cap, the head wire cap, the gap between the porcelain tube and the sleeve and the resistance wire.
In the structure, one end of the porcelain tube at the tail wire cap is a through hole.
In the structure, one end of the porcelain tube at the tail wire cap is a blind hole.
In the above structure, the film fuse includes a substrate made of ceramic, and a film layer made of a tin alloy, the film layer being attached to the substrate.
The beneficial effects of the utility model reside in that: adopt the membrane fuse to replace the temperature fuse, the utility model discloses production technology is ripe, has reduced manufacturing cost, has improved the degree of automation of product production technology.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a cross-sectional view of another structure of the present invention.
In the figure, 1-tail wire cap, 2-porcelain tube, 3-sleeve, 4-resistance wire, 5-long metal cap, 6-insulating paint, 7-film fuse, 8-head wire cap and 9-groove.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to the attached drawings, the novel over-current and over-temperature protection element comprises a tail wire cap 1, a porcelain tube 2, a sleeve 3, a resistance wire 4, a long metal cap 5, a film fuse 7 and a head wire cap 8, wherein the porcelain tube 2 is arranged in the sleeve 3, a resistance wire 4 wound on the porcelain tube 2 is arranged in a gap between the porcelain tube 2 and the sleeve 3, one end of the resistance wire 4 is electrically connected with the tail wire cap 1, the other end is electrically connected with the long metal cap 5, the long metal cap 5 is provided with a groove 9 inserted into the porcelain tube 2, one end of the porcelain tube 2 is inserted into the groove 9, the resistance wire 4 is in circuit connection with the edge of a groove 9 of the long metal cap 5, one end, without a pin, of the membrane fuse 7 is inserted into the middle of the long metal cap 5 and is in interference fit with the long metal cap 5, the other end of the membrane fuse 7 is in circuit connection with the head wire cap 8, and the long metal cap 5 is in circuit connection with the membrane fuse 7.
Preferably, the tail cap 1 and the head cap 8 are hard metal wires for convenient insertion.
Preferably, the centerline of the tail cap 1 is the same as the centerline of the head cap 8. The utility model discloses two off-the-shelf pins can be guaranteed at same central line, are fit for PCB's automatic plug-in components like this, effectively reduce the man-hour cost of PCB equipment, improve production efficiency.
Preferably, the tail wire cap 1, the head wire cap 8, the gap between the porcelain tube 2 and the sleeve 3 and the resistance wire 4 are coated with insulating paint 6 for insulation.
Preferably, the porcelain tube 2 is a through hole at one end of the tail cap 1, as shown in fig. 2.
Preferably, the porcelain tube 2 is a blind hole at one end of the tail cap 1, as shown in fig. 1.
Preferably, the substrate of the film fuse 7 is ceramic or other high temperature resistant insulating material, and the film layer is tin alloy or other low temperature material.
Preferably, the film fuse 7 comprises a substrate made of ceramic, a film layer made of a tin alloy, the film layer being attached to the substrate.
The technical scheme of the utility model has following advantage:
the film fuse 7 is adopted to replace a temperature fuse, the production process is mature, and the cost is far lower than that of the temperature fuse; welding a metal cap at one end of a film fuse 7 on a pin head wire cap 8, and enabling a metal cap without a pin at the other end to penetrate into a long metal cap 5 with a cavity as large as the metal cap, wherein an opening (or a small hole) is not needed at the bottom of a sleeve, the metal cap of the film fuse 7 is tightly pressed and in interference fit with the small cavity and the bottom of the long metal cap 5, the process is mature and reliable, then the metal sleeve is pressed and in interference fit with a ceramic tube 2 base body and a tail wire cap 1, and then the traditional mature process of a wound resistance wire 4 is adopted for production, so that the whole production process is high in automation degree and low in manufacturing cost, large-batch automatic production can be realized, and the requirement of a customer on cost reduction is;
the volume of the product body with the structure can be greatly reduced compared with the existing mode, and the miniaturization design requirement of electronic products can be met.
1, the material cost of the product is greatly reduced, and a more suitable scheme is provided for circuit protection.
2 the pins of the product are ensured to be centered, the production process is suitable for full-automatic production, the production efficiency is greatly improved, the manufacturing cost of the product is effectively reduced, the cost performance of the product is improved, and the large-batch requirements of customers are met.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a novel overcurrent excess temperature protection component which characterized by: the device comprises a tail wire cap, a porcelain tube, a sleeve, a resistance wire, a long metal cap, a film fuse and a head wire cap, wherein the porcelain tube is arranged in the sleeve, and the resistance wire wound on the porcelain tube is arranged in a gap between the porcelain tube and the sleeve; one end of the resistance wire is connected with the tail wire cap circuit, and the other end of the resistance wire is connected with the long metal cap circuit; the long metal cap is provided with a groove inserted into the ceramic tube, one end of the ceramic tube is inserted into the groove, the resistance wire is connected with a marginal circuit of the groove of the long metal cap, one end of the membrane fuse without pins is inserted into the middle of the long metal cap and is in interference fit with the long metal cap, the other end of the membrane fuse is connected with a head wire cap circuit, and the long metal cap is connected with the membrane fuse circuit.
2. The novel overcurrent over-temperature protection element as set forth in claim 1, wherein: the tail wire cap and the head wire cap are hard metal wires convenient for plug-in.
3. The novel overcurrent over-temperature protection element as set forth in claim 2, wherein: the central line of the tail line cap is the same as that of the head line cap.
4. The novel overcurrent over-temperature protection element as set forth in claim 1, wherein: and insulating paint for insulation is coated in the tail wire cap, the head wire cap, the gap between the porcelain tube and the sleeve and on the resistance wire.
5. The novel overcurrent over-temperature protection element as set forth in claim 1, wherein: and one end of the porcelain tube at the tail wire cap is a through hole.
6. The novel overcurrent over-temperature protection element as set forth in claim 1, wherein: the porcelain tube is a blind hole at one end of the tail wire cap.
7. The novel overcurrent over-temperature protection element as set forth in claim 1, wherein: the film fuse includes a substrate made of ceramic, a film layer made of a tin alloy, the film layer being attached to the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583551.2U CN212485266U (en) | 2020-07-31 | 2020-07-31 | Novel overcurrent and overtemperature protection element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583551.2U CN212485266U (en) | 2020-07-31 | 2020-07-31 | Novel overcurrent and overtemperature protection element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212485266U true CN212485266U (en) | 2021-02-05 |
Family
ID=74452891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021583551.2U Active CN212485266U (en) | 2020-07-31 | 2020-07-31 | Novel overcurrent and overtemperature protection element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212485266U (en) |
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2020
- 2020-07-31 CN CN202021583551.2U patent/CN212485266U/en active Active
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