CN211181811U - Resistor with built-in temperature fuse - Google Patents
Resistor with built-in temperature fuse Download PDFInfo
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- CN211181811U CN211181811U CN201922237958.3U CN201922237958U CN211181811U CN 211181811 U CN211181811 U CN 211181811U CN 201922237958 U CN201922237958 U CN 201922237958U CN 211181811 U CN211181811 U CN 211181811U
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Abstract
The utility model provides a resistor with a built-in temperature fuse, which comprises a temperature fuse 6, wherein two ends of the temperature fuse 6 are respectively provided with a first pin 61 and a second pin 62, the temperature fuse 6 is arranged in the second ceramic tube 5, the first pin 61 extends out of one end of the second ceramic tube 5, the first pin 61 is wrapped and clamped by the first connecting part 11 of the metal shell 1, and is tightly sleeved by a copper cap 7, the metal shell 1 is wrapped and clamped with the second ceramic tube 5, the second pin 62 extends out of the other end of the second ceramic tube 5, the metal shell 1 is arranged in the first ceramic tube 4, the second connecting part 12 of the metal shell 1 is turned over to the outside of one end of the first ceramic tube 4 and is clamped, the other end of the first ceramic tube 4 is provided with a metal conductive cap 2 which is clamped, and a resistance wire winding 3 is arranged between the metal conductive cap 2 and the second connecting part 12.
Description
Technical Field
The utility model relates to a resistor, concretely relates to resistor of built-in temperature fuse.
Background
The resistor and the fuse are similar in material and structure, and the fuse type resistor has the functions of both, can be used as a resistor at ordinary times, plays the role of the fuse to protect machine equipment once the current is abnormal, and reduces the cost along with the dual-purpose function. The fuse type wire-wound resistor is one of the common forms, however, at present, most resistance wire windings and temperature fuses are connected in series in a ceramic matrix, and the length and the volume of the resistor are large. Chinese patent publication No.: CN109994293A discloses a resistor with a built-in metal case temperature fuse, the resistance wire winding is located outside the ceramic substrate, and the fuse connected through the metal case is located inside the ceramic substrate, which has the advantages of reducing the volume of the resistor, but still has the following disadvantages: 1) the pin and the metal shell are likely to be touched in the production process, and unqualified products are easy to produce when the pin and the metal shell are sealed by glue pouring; 2) the fuse is disposable and can not be used after being fused.
SUMMERY OF THE UTILITY MODEL
Problem to the background art provides, the utility model aims at, provide a resistor of built-in temperature fuse, prevent that pin collision metal casing from leading to the product unqualified in the production process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a temperature fuse built-in resistor comprising: temperature fuse (6), temperature fuse (6) both ends have first pin (61) and second pin (62) respectively, in second ceramic pipe (5) are arranged in to temperature fuse (6), first pin (61) stretches out the one end of second ceramic pipe (5), first pin (61) is by first connecting portion (11) cladding joint of metal casing (1) to use copper cap (7) to tighten up, metal casing (1) cladding joint second ceramic pipe (5), the other end that second ceramic pipe (5) were stretched out to second pin (62), first ceramic pipe (4) are arranged in to metal casing (1), second connecting portion (12) of metal casing (1) turn over to the outside and the joint of first ceramic pipe (4) one end, the other end of first ceramic pipe (4) sets up metal conductive cap (2) and joint, and a third pin (8) is butt-welded on the metal conductive cap (2), a resistance wire winding (3) is arranged between the metal conductive cap (2) and the second connecting part (12), and two ends of the resistance wire winding (3) are respectively and electrically connected with the metal conductive cap (2) and the second connecting part (12).
Further, the resistor with the built-in temperature fuse is characterized in that the temperature fuse (6) is a temperature sensing alloy wire, a first pin (61) and a second pin (62) are welded to two ends of the temperature sensing alloy wire in advance respectively, the second ceramic tube (5) is a cylindrical tube body with a step through hole, the first pin (61) extends out of one end of a small hole of the second ceramic tube (5), a fusing assistant agent (10) is poured into the through hole of the second ceramic tube (5), the second pin (62) extends out of a large hole of the second ceramic tube (5), and sealing resin (9) is poured into the large hole of the second ceramic tube (5).
Further, the resistor with the built-in temperature fuse is characterized in that the temperature fuse (6) is a temperature sensing alloy wire which is coated in advance, the middle of the temperature fuse is large, two ends of the temperature fuse respectively extend out of a first pin (61) and a second pin (62), the main body of the temperature fuse (6) is arranged in a second ceramic tube (5), the second ceramic tube (5) is a hollow cylindrical tube body with a through hole at the bottom, the second pin (62) extends out of the through hole at the bottom of the second ceramic tube (5), and the first pin (61) extends out of the other end of the second ceramic tube (5).
The utility model has the advantages that: the second ceramic tube (5) is added, so that the stability of the temperature fuse (6) can be better protected, the process is more stable, and the defective rate is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a resistor with a built-in temperature fuse;
FIG. 2 is a schematic structural diagram of an embodiment 2 of a temperature fuse-embedded resistor;
description of the drawings: the lead frame comprises a metal shell (1), a metal conductive cap (2), a resistance wire winding (3), a first ceramic tube (4), a second ceramic tube (5), a temperature fuse (6), a copper cap (7), a third pin (8), sealing resin (9), a fluxing agent (10), a first connecting part (11), a second connecting part (12), a first pin (61) and a second pin (62).
Detailed Description
The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.
Example 1: as shown in fig. 1, a resistor with a built-in temperature fuse includes: temperature fuse (6), temperature fuse (6) are the temperature sensing alloy silk, and both ends weld first pin (61) and second pin (62) respectively in advance, in second ceramic pipe (5) are arranged in to temperature fuse (6), second ceramic pipe (5) are the cylindrical body of taking the step through-hole, first pin (61) stretches out the one end of second ceramic pipe (5) aperture, first pin (61) are by first connecting portion (11) cladding joint of metal casing (1) to use copper cap (7) to overlap tightly, metal casing (1) cladding joint second ceramic pipe (5), pour into in the through-hole of second ceramic pipe (5) and help fusing agent (10), second pin (62) stretch out the macropore of second ceramic pipe (5), pour into in the macropore of second ceramic pipe (5) and seal resin (9), the arranging of metal casing (1) in first ceramic pipe (4), the second connecting part (12) of the metal shell (1) is turned to the outside of the first ceramic tube (4) and clamped, the other end of the first ceramic tube (4) is provided with a metal conductive cap (2) and clamped, a third pin (8) is welded on the metal conductive cap (2), a resistance wire winding (3) is arranged between the metal conductive cap (2) and the second connecting part (12), and two ends of the resistance wire winding (3) are respectively and electrically connected with the metal conductive cap (2) and the second connecting part (12); the temperature fuse (6) is placed in the ceramic tube with the step hole and then placed in the metal shell (1), so that the temperature fuse can be insulated better, and the stability of the temperature fuse (6) is protected.
Example 2: as shown in fig. 2, a resistor with a built-in temperature fuse includes: the temperature fuse (6), the temperature fuse (6) is the temperature sensing alloy silk of cladding in advance, and the centre is big, and both ends stretch out first pin (61) and second pin (62) respectively, the main part of temperature fuse (6) is arranged in second ceramic pipe (5), second ceramic pipe (5) are the hollow cylindrical body of bottom band-pass hole, second pin (62) stretch out the through-hole of second ceramic pipe (5) bottom, first pin (61) stretches out the other end of second ceramic pipe (5), first pin (61) is by first connecting portion (11) cladding joint of metal casing (1) to use copper cap (7) to overlap tightly, metal casing (1) cladding joint second ceramic pipe (5), place in first ceramic pipe (4) of metal casing (1), the second connecting portion (12) of metal casing (1) turn over to the outside and the joint of first ceramic pipe (4), the other end of the first ceramic tube (4) is provided with a metal conductive cap (2) and is clamped, a third pin (8) is welded on the metal conductive cap (2), a resistance wire winding (3) is arranged between the metal conductive cap (2) and the second connecting part (12), and two ends of the resistance wire winding (3) are respectively and electrically connected with the metal conductive cap (2) and the second connecting part (12); dispensing is not needed, and the clamping process is adopted completely.
The above examples are only intended to illustrate the specific embodiments of the present invention, but not to limit the present invention, and it will be apparent to those skilled in the art that various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should be regarded as the protection scope of the present invention.
Claims (3)
1. A temperature fuse built-in resistor, comprising: temperature fuse (6), temperature fuse (6) both ends have first pin (61) and second pin (62) respectively, in second ceramic pipe (5) are arranged in to temperature fuse (6), first pin (61) stretches out the one end of second ceramic pipe (5), first pin (61) is by first connecting portion (11) cladding joint of metal casing (1) to use copper cap (7) to tighten up, metal casing (1) cladding joint second ceramic pipe (5), the other end that second ceramic pipe (5) were stretched out to second pin (62), first ceramic pipe (4) are arranged in to metal casing (1), second connecting portion (12) of metal casing (1) turn over to the outside and the joint of first ceramic pipe (4) one end, the other end of first ceramic pipe (4) sets up metal conductive cap (2) and joint, and a third pin (8) is butt-welded on the metal conductive cap (2), a resistance wire winding (3) is arranged between the metal conductive cap (2) and the second connecting part (12), and two ends of the resistance wire winding (3) are respectively and electrically connected with the metal conductive cap (2) and the second connecting part (12).
2. The resistor with the built-in temperature fuse as claimed in claim 1, wherein the temperature fuse (6) is a temperature sensing alloy wire, the two ends of the temperature sensing alloy wire are respectively welded with a first pin (61) and a second pin (62), the second ceramic tube (5) is a cylindrical tube body with a step through hole, the first pin (61) extends out of one end of the small hole of the second ceramic tube (5), the through hole of the second ceramic tube (5) is filled with the fusing assistant agent (10), the second pin (62) extends out of the large hole of the second ceramic tube (5), and the large hole of the second ceramic tube (5) is filled with the sealing resin (9).
3. The resistor with the built-in temperature fuse according to claim 1, wherein the temperature fuse (6) is a pre-coated temperature-sensitive alloy wire, the middle of the temperature-sensitive alloy wire is large, the two ends of the temperature-sensitive alloy wire respectively extend out of a first pin (61) and a second pin (62), the main body of the temperature fuse (6) is arranged in a second ceramic tube (5), the second ceramic tube (5) is a hollow cylindrical tube body with a through hole at the bottom, the second pin (62) extends out of the through hole at the bottom of the second ceramic tube (5), and the first pin (61) extends out of the other end of the second ceramic tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922237958.3U CN211181811U (en) | 2019-12-13 | 2019-12-13 | Resistor with built-in temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922237958.3U CN211181811U (en) | 2019-12-13 | 2019-12-13 | Resistor with built-in temperature fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211181811U true CN211181811U (en) | 2020-08-04 |
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ID=71803558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922237958.3U Active CN211181811U (en) | 2019-12-13 | 2019-12-13 | Resistor with built-in temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211181811U (en) |
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2019
- 2019-12-13 CN CN201922237958.3U patent/CN211181811U/en active Active
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