CN110998755A - Resistor with a resistor element - Google Patents
Resistor with a resistor element Download PDFInfo
- Publication number
- CN110998755A CN110998755A CN201880053962.XA CN201880053962A CN110998755A CN 110998755 A CN110998755 A CN 110998755A CN 201880053962 A CN201880053962 A CN 201880053962A CN 110998755 A CN110998755 A CN 110998755A
- Authority
- CN
- China
- Prior art keywords
- resistor
- terminal
- intermediate terminal
- gripping
- grip
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/014—Mounting; Supporting the resistor being suspended between and being supported by two supporting sections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/148—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Resistors (AREA)
Abstract
Provided is a three-terminal resistor having excellent stability and reliability. The three-terminal resistor is provided with a 1 st resistor (21) and a 2 nd resistor (22), and an intermediate terminal (23) connecting the 1 st and the 2 nd resistors (21, 22), wherein the intermediate terminal (23) is provided with a 1 st gripping part (23a) and a 2 nd gripping part (23b) which respectively grip the 1 st and the 2 nd resistors (21, 22) linearly in the axial direction, and the 1 st and the 2 nd resistors (21, 22) are gripped with a space (S) between the 1 st gripping part (23a) and the 2 nd gripping part (23 b).
Description
Technical Field
The present invention relates to a resistor, and more particularly, to a three-terminal resistor including a middle terminal at the center thereof in addition to terminals at both ends of the resistor.
Background
Conventionally, there have been known three-terminal type resistors described above in which a winding resistor in which windings are applied to a glass core and a ceramic core, and a metal oxide coated resistor in which a metal oxide coated resistor is disposed on a ceramic core are sealed in a cement case or the like. According to such a resistor, flame retardancy, a large electric power capacity, and particularly, a resistor excellent in pulse/rush current prevention function, and preferably suitable for applications such as a balance resistor of a capacitor, can be obtained.
An example of the conventional three-terminal resistor is shown in fig. 5. One core 11 is wound with a coil 12, and terminals 13 and 14 are provided at both ends, and an intermediate terminal 15 is provided at the center of the terminals 13 and 14 (see japanese patent application laid-open No. s 49-78154).
Further, there is also a resistor in which one core material is divided into two core materials, the two core materials are arranged in a butt joint, and windings are arranged individually on the two core materials to obtain different resistance values. Further, there is also known a three-terminal type resistor in which the cap end surfaces of two capped winding resistors are soldered to ground and terminals are fixed to the caps (see japanese patent application laid-open No. 2010-212483).
Disclosure of Invention
Problems to be solved by the invention
The conventional three-terminal resistor having a long axial length has a problem that the degree of thermal expansion and contraction varies along the axial direction of the resistor, and the stability and reliability of the resistor are problematic due to long-term use.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a three-terminal resistor having excellent stability and reliability.
Means for solving the problems
The three-terminal resistor of the present invention includes a 1 st resistor and a 2 nd resistor, and an intermediate terminal connecting the 1 st resistor and the 2 nd resistor, the intermediate terminal including a 1 st gripping part and a 2 nd gripping part that grip the 1 st resistor and the 2 nd resistor linearly in an axial direction, respectively, the 1 st resistor and the 2 nd resistor being gripped with a gap therebetween. Preferably, the space is formed by a slit.
According to the present invention, since the 1 st resistor and the 2 nd resistor are held with a space between the holding portions of the 1 st resistor and the 2 nd resistor constituting the three-terminal type resistor, the 1 st resistor and the 2 nd resistor are independent from each other. Thus, even when the degree of thermal expansion and contraction differs along the axial direction of the resistor in a three-terminal resistor having a long axial length, the 1 st resistor and the 2 nd resistor can be thermally expanded and contracted independently. Therefore, the problem that a problem occurs in the stability and reliability of the resistor due to long-term use is solved, and a three-terminal type resistor having excellent stability and reliability can be provided.
Drawings
Fig. 1 is a front view of a three-terminal type resistor according to an embodiment of the present invention.
Fig. 2 shows an example of the structure of the intermediate terminal, where (a) is a front view and (b) is a side view.
Fig. 3 shows a three-terminal resistor according to another embodiment of the present invention, in which (a) is a front view, (b) is a sectional view taken along line AA ', and (c) is a sectional view taken along line BB'.
Fig. 4 is a side view showing another structural example of the terminal, where (a) is an example in which a step is provided between the grip portion and the connection portion, and (b) is an example in which a torsion portion is provided between the grip portion and the connection portion.
Fig. 5 is a front view of a conventional three-terminal resistor.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to fig. 1 to 4. In the drawings, the same or corresponding members or elements are denoted by the same reference numerals.
Fig. 1 shows a three-terminal resistor according to an embodiment of the present invention, and fig. 2 shows an example of the structure of an intermediate terminal. As shown in fig. 1, the resistor of the present invention includes a 1 st resistor 21 and a 2 nd resistor 22, and an intermediate terminal 23 connecting the 1 st resistor 21 and the 2 nd resistor 22. For example, a winding resistor in which a winding is applied to a glass core or a ceramic core, or a metal oxide film resistor in which a metal oxide film is disposed on a ceramic core, or the like is used as the 1 st resistor 21 and the 2 nd resistor 22.
The ends of the 1 st resistor 21 and the 2 nd resistor 22 opposite to the intermediate terminal 23 are connected to the terminals 24 and 25, respectively, and constitute a three-terminal resistor as a whole. The resistor is sealed in a cement container or the like, and can be used as a resistor having flame retardancy, a large power capacity, and particularly an excellent pulse/surge current prevention function.
The intermediate terminal 23 includes a 1 st grip 23a and a 2 nd grip 23b that grip the 1 st resistor 21 and the 2 nd resistor 22 linearly in the axial direction, respectively, and the 1 st and 2 nd resistors 21 and 22 are gripped with a space S between the 1 st grip 23a and the 2 nd grip 23 b. In this embodiment, the intermediate terminal 23 includes a slit S between the 1 st grip portion 23a and the 2 nd grip portion 23b, and the space S is formed by the slit S.
The intermediate terminal 23 includes a common connecting portion 23c extending from the 1 st grip portion 23a and the 2 nd grip portion 23 b. The terminals 24 and 25 also include holding portions 24a and 25b for holding the end portions of the 1 st resistor 21 and the 2 nd resistor 22 opposite to the intermediate terminal 23, and connecting portions 24c and 25c extending from the holding portions. The connection portions 23c, 24c, and 25c are used for connection to a circuit when mounted.
According to the three-terminal type resistor, the 1 st resistor and the 2 nd resistor are held by the intermediate terminal 23 with a space (slit S) between the holding portions 23a and 23b of the intermediate terminal 23 of the 1 st resistor 21 and the 2 nd resistor 22 constituting the three-terminal type resistor, and therefore the 1 st resistor 21 and the 2 nd resistor 22 are independent from each other.
Therefore, the stability and reliability of the three-terminal resistor can be improved with respect to thermal expansion and thermal contraction of the cement case. For example, in the case where the 1 st resistor 21 expands due to heat generation and the 2 nd resistor 22 does not generate heat and remains in a contracted state, by holding the 1 st resistor 21 and the 2 nd resistor 22 with a gap between the holding portions 23a and 23b, the thermal expansion of the 1 st resistor 21 does not affect the 2 nd resistor 22.
Thus, even when the degree of thermal expansion and contraction differs along the axial direction of the resistor in a three-terminal resistor having a long axial length, the 1 st resistor and the 2 nd resistor can be thermally expanded and contracted independently. Therefore, conventionally, there has been a problem in the stability and reliability of the resistor due to long-term use, but such a problem has been solved by gripping the 1 st resistor 21 and the 2 nd resistor 22 with a gap between the gripping portions 23a and 23 b.
Further, by disposing the slit S at the center of the three-terminal resistor, the 1 st resistor 21 and the 2 nd resistor 22 can be mounted in a well-balanced manner when mounted in a cement container. That is, by providing a partition plate at the center of the cement container and fitting the partition plate and the slit S deep, the three-terminal type resistor can be easily and well-balanced attached to the cement casing.
The intermediate terminal 23 is formed by forming a metal coating (e.g., Sn plating) on a base material of a single thin plate-like metal such as Fe, Cu, or the like. In the present embodiment, the thickness of the metal plate is preferably about 0.5 mm. The inner diameters of the annular gripping portions 23a and 23b gripping the axial end portions of the resistors 21 and 22 are set to a size such that the resistor can be fitted therein and a spring force capable of continuously gripping the resistor having a diameter of 4.0mm can be obtained, for example, when gripping the resistor having a diameter of 4.0 mm.
For example, the axial length of the annular gripping portions 23a and 23b for gripping a resistor having a diameter of 4.0mm is preferably about 3.5 mm. The distance between the annular gripping portions 23a and 23b, that is, the axial length of the slit S is preferably about 1mm, and the depth of the slit S is preferably about 7 mm. Thus, the thermal expansion and contraction of the resistor, which repeats thermal expansion and contraction in the axial direction, is absorbed by the elasticity of the metal plate, and the two resistors 21 and 22 are held at a distance from each other without interfering with each other.
The intermediate terminal 23 includes a connecting portion 23c extending from the annular grip portions 23a and 23b, but the distance from the grip portions 23a and 23b to the connecting portion 23c, that is, the height of the intermediate terminal 23 is determined in accordance with the specification of the cement container or the like to which the intermediate terminal is attached.
Fig. 3 shows a three-terminal type resistor according to another embodiment of the present invention. In this embodiment, the intermediate terminal 23 and the terminals 24 and 25 are formed with embossings O by press working or the like as shown in fig. 3(b) and (c). This improves the strength of the intermediate terminal 23 and the terminals 24 and 25 against bending stress.
Fig. 4 shows a modification of the intermediate terminal 23 and the terminals 24 and 25 shown in fig. 2. (a) The intermediate terminal and the terminal are provided with a step in the middle. (b) The intermediate terminal and the terminal are provided with a twisted portion formed by twisting the connecting portions 23c, 24c, and 25c by 90 °. These processes can be appropriately adopted according to various mounting methods.
While one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and may be implemented in various different forms within the scope of the technical idea thereof.
Industrial applicability of the invention
The present invention can be preferably applied to a three-terminal resistor used for a cement resistor or the like, which includes a middle terminal in the center in addition to terminals at both ends of the resistor.
Claims (4)
1. A three-terminal type resistor characterized in that,
the three-terminal resistor includes a 1 st resistor and a 2 nd resistor, and an intermediate terminal connecting the 1 st resistor and the 2 nd resistor,
the intermediate terminal includes a 1 st gripping part and a 2 nd gripping part for gripping the 1 st resistor and the 2 nd resistor linearly in an axial direction,
the 1 st resistor and the 2 nd resistor are held between the 1 st holding part and the 2 nd holding part with a gap.
2. Three-terminal type resistor according to claim 1,
the space is formed by a slit.
3. Three-terminal type resistor according to claim 1,
the intermediate terminal includes a connecting portion extending from the 1 st grip portion and the 2 nd grip portion.
4. Three-terminal type resistor according to claim 1,
the intermediate terminal is formed of a single thin plate-like metal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017158489A JP6938274B2 (en) | 2017-08-21 | 2017-08-21 | Resistor |
| JP2017-158489 | 2017-08-21 | ||
| PCT/JP2018/026184 WO2019039122A1 (en) | 2017-08-21 | 2018-07-11 | Resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110998755A true CN110998755A (en) | 2020-04-10 |
| CN110998755B CN110998755B (en) | 2021-12-28 |
Family
ID=65438841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880053962.XA Active CN110998755B (en) | 2017-08-21 | 2018-07-11 | Resistor with a resistor element |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6938274B2 (en) |
| CN (1) | CN110998755B (en) |
| DE (1) | DE112018004738T5 (en) |
| WO (1) | WO2019039122A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3221397A (en) * | 1961-03-29 | 1965-12-07 | Installationsmateriel Ab | Method of mass producing resistors |
| JPS4417852B1 (en) * | 1967-06-01 | 1969-08-06 | ||
| JPS5110549U (en) * | 1974-07-11 | 1976-01-26 | ||
| JPH05347201A (en) * | 1992-06-15 | 1993-12-27 | Tdk Corp | Thin film resistor |
| JP2008053048A (en) * | 2006-08-24 | 2008-03-06 | Fujikura Ltd | Crimp terminal |
| CN103180741A (en) * | 2011-03-31 | 2013-06-26 | 古河电气工业株式会社 | Connecting terminal of shunt resistor, and battery state detecting apparatus |
| CN103843078A (en) * | 2011-09-29 | 2014-06-04 | 兴亚株式会社 | Ceramic resistor |
| CN105900189A (en) * | 2014-01-08 | 2016-08-24 | 三菱综合材料株式会社 | Resistor and production method for resistor |
| CN106960707A (en) * | 2016-01-08 | 2017-07-18 | Koa株式会社 | Resistor bracket, the resistor of subsidiary bracket and its manufacture method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS3718945Y1 (en) * | 1961-05-14 | 1962-07-27 | ||
| JPS4978154A (en) | 1972-12-05 | 1974-07-27 | ||
| JPH062242Y2 (en) * | 1989-02-22 | 1994-01-19 | ミクロン電気株式会社 | Resistors for controlling blowers of automobile air conditioners |
| JP2016001758A (en) * | 2015-09-15 | 2016-01-07 | ミクロン電気株式会社 | Method of manufacturing resistor |
-
2017
- 2017-08-21 JP JP2017158489A patent/JP6938274B2/en active Active
-
2018
- 2018-07-11 CN CN201880053962.XA patent/CN110998755B/en active Active
- 2018-07-11 WO PCT/JP2018/026184 patent/WO2019039122A1/en active Application Filing
- 2018-07-11 DE DE112018004738.5T patent/DE112018004738T5/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3221397A (en) * | 1961-03-29 | 1965-12-07 | Installationsmateriel Ab | Method of mass producing resistors |
| JPS4417852B1 (en) * | 1967-06-01 | 1969-08-06 | ||
| JPS5110549U (en) * | 1974-07-11 | 1976-01-26 | ||
| JPH05347201A (en) * | 1992-06-15 | 1993-12-27 | Tdk Corp | Thin film resistor |
| JP2008053048A (en) * | 2006-08-24 | 2008-03-06 | Fujikura Ltd | Crimp terminal |
| CN103180741A (en) * | 2011-03-31 | 2013-06-26 | 古河电气工业株式会社 | Connecting terminal of shunt resistor, and battery state detecting apparatus |
| CN103843078A (en) * | 2011-09-29 | 2014-06-04 | 兴亚株式会社 | Ceramic resistor |
| CN105900189A (en) * | 2014-01-08 | 2016-08-24 | 三菱综合材料株式会社 | Resistor and production method for resistor |
| CN106960707A (en) * | 2016-01-08 | 2017-07-18 | Koa株式会社 | Resistor bracket, the resistor of subsidiary bracket and its manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6938274B2 (en) | 2021-09-22 |
| WO2019039122A1 (en) | 2019-02-28 |
| JP2019036673A (en) | 2019-03-07 |
| DE112018004738T5 (en) | 2020-06-10 |
| CN110998755B (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10477897B2 (en) | Air and/or aerosol heater | |
| US9443688B2 (en) | Fuse providing overcurrent and thermal protection | |
| CN103460574B (en) | Vibrating electricity generator | |
| KR101320720B1 (en) | Fuse and manufacturing method thereof | |
| CN101183603A (en) | Inductance device, filter device comprising the same, and noise filter comprising the same | |
| US7723897B2 (en) | Electrical component and method for the production thereof | |
| JP6659028B2 (en) | Wound inductor and manufacturing method thereof | |
| CN110998755B (en) | Resistor with a resistor element | |
| US20060220487A1 (en) | Field apparatus for a rotary electric machine and field coil used for the field apparatus | |
| WO2015040999A1 (en) | Spring connector | |
| US4456900A (en) | High frequency coil | |
| JP2008270329A (en) | Capacitor | |
| TWI289966B (en) | Commutator for an electric machine | |
| JP2009277828A (en) | Capacitor | |
| EP3640966A3 (en) | Coiled fusible element for high reliability fuse | |
| US2922138A (en) | Electric mount | |
| JP2007280919A (en) | Surface-mounted current fuse and its manufacturing method | |
| JP2008124231A (en) | Electronic component-link and its manufacturing method | |
| JP2016001758A (en) | Method of manufacturing resistor | |
| US2406961A (en) | Device for use with helically-wound coils | |
| JP4831764B2 (en) | Electrolytic capacitor | |
| JP5878651B2 (en) | Chip fuse and manufacturing method thereof | |
| JP3224762U (en) | Cap parts | |
| US4052689A (en) | Wire spring fuse holder with pigtail leads | |
| EP0117253A1 (en) | Cylindrical piezoelectric vibrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |