JPH0528721Y2 - - Google Patents
Info
- Publication number
- JPH0528721Y2 JPH0528721Y2 JP10469789U JP10469789U JPH0528721Y2 JP H0528721 Y2 JPH0528721 Y2 JP H0528721Y2 JP 10469789 U JP10469789 U JP 10469789U JP 10469789 U JP10469789 U JP 10469789U JP H0528721 Y2 JPH0528721 Y2 JP H0528721Y2
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- heat dissipation
- insulating substrate
- heat
- dissipation fin
- 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.)
- Expired - Lifetime
Links
- 230000017525 heat dissipation Effects 0.000 claims description 49
- 239000000758 substrate Substances 0.000 claims description 28
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 10
- 230000005855 radiation Effects 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、車両用送風機の速度制御用抵抗器
に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a speed control resistor for a vehicle blower.
（従来の技術）
従来の車両用送風機の速度制御用抵抗器として
は、絶縁基板上に設けられ、過電流が流れると溶
断する抵抗体と、この抵抗体の所定個所にそれぞ
れ接続してある複数の端子と、前記抵抗体に生じ
た熱を放出する放熱フインとを備え、前記絶縁基
板上に放熱板を固定し、この放熱板上に前記放熱
フインをはんだ等の接着材料を用いて固定してな
るものがある（特開昭62−140705号公報）。(Prior Art) A conventional speed control resistor for a vehicle blower includes a resistor that is provided on an insulating substrate and melts when an overcurrent flows, and a plurality of resistors that are connected to predetermined locations of the resistor. and a heat dissipation fin that radiates heat generated in the resistor, a heat dissipation plate is fixed on the insulating substrate, and the heat dissipation fin is fixed on the heat dissipation plate using an adhesive material such as solder. (Japanese Unexamined Patent Publication No. 140705/1983).
この速度制御用抵抗器を送風機モータに直列に
接続し、その抵抗値を切換タツプで切り換えて送
風機モータの回転数を変え、そのモータの速度制
御を行つている。 This speed control resistor is connected in series to the blower motor, and its resistance value is switched with a switching tap to change the rotational speed of the blower motor, thereby controlling the speed of the motor.
この速度制御用抵抗器によれば、送風機モータ
のロツクや短絡等の異常事態が生じた場合、送風
機の運転が停止して放熱フインの放熱量が大幅に
減少し、抵抗体の熱が蓄積して速度制御用抵抗器
が高温に熱せられ、接着材料のはんだが溶融して
接着力を失い、放熱フインが放熱板から外れる。
その結果、急速に温度上昇した抵抗体が溶断し、
電源から送風機モータへの通電が断たれる。 According to this speed control resistor, if an abnormal situation such as the blower motor locks or a short circuit occurs, the blower will stop operating, the amount of heat radiated by the heat radiation fins will be significantly reduced, and heat will accumulate in the resistor. The speed control resistor is heated to a high temperature, the solder of the adhesive material melts and loses adhesive strength, and the heat dissipation fin comes off from the heat dissipation plate.
As a result, the resistor, whose temperature rose rapidly, melted and
Power to the blower motor is cut off from the power supply.
また、従来の他の速度制御用抵抗器としては、
絶縁基板上に設けられ、過電流が流れると溶断す
る抵抗体と、この抵抗体の所定個所にそれぞれ接
続してある複数の端子と、前記抵抗体に生じた熱
を放出する放熱フインとを備え、絶縁基板上に固
定した放熱板と、この放熱板に面接触している放
熱フインとを、所定の高い温度になると伸長する
形状記憶合金製のばねを介して連結してなるもの
がある（実開昭62−147303号公報）。 In addition, other conventional speed control resistors include:
The resistor is provided on an insulating substrate and includes a resistor that melts when an overcurrent flows, a plurality of terminals each connected to a predetermined location of the resistor, and a heat dissipation fin that releases heat generated in the resistor. There is one in which a heat dissipation plate fixed on an insulating substrate and heat dissipation fins in surface contact with the heat dissipation plate are connected via a shape memory alloy spring that expands when a predetermined high temperature is reached. Utility Model Publication No. 147303/1983).
この速度制御用抵抗器によれば、異常事態が生
じた場合、抵抗器の温度上昇により形状記憶合金
製のばねが伸長し、放熱フインが放熱板から離
れ、その結果急速に温度上昇した抵抗体が溶断す
る。したがつて、上述した速度制御用抵抗器の場
合と同様に、電源から送風機モータへの通電が断
たれる。 According to this speed control resistor, when an abnormal situation occurs, the shape memory alloy spring expands due to the rise in temperature of the resistor, and the heat dissipation fins separate from the heat dissipation plate, resulting in a rapid temperature rise in the resistor. melts. Therefore, as in the case of the speed control resistor described above, the power supply from the power supply to the blower motor is cut off.
（考案が解決しようとする課題）
ところが、絶縁基板上に放熱板を固定し、その
放熱板上に放熱フインをはんだ等の接着材料を用
いて固定してなる速度制御用抵抗器は、異常事態
発生時に放熱フインを離脱させようとするもので
あるから、放熱フインの離脱後著しく高い温度に
なつた放熱板の表面が通風ダクト内に露出するこ
とになるので、その放熱板に通風ダクト内のゴミ
や枯葉などが付着すると、発火することがあると
ともに、抵抗器交換の際、離脱した放熱フインを
通風ダクトから見つけ出し、回収する作業が煩雑
であるという問題があつた。(Problem to be solved by the invention) However, the speed control resistor, which is made by fixing a heat sink on an insulating substrate and fixing heat sink fins on the heat sink using an adhesive material such as solder, is susceptible to abnormal situations. Since the heat dissipation fins are intended to be removed at the time of occurrence, the surface of the heat dissipation plate, which has become extremely hot after the heat dissipation fins are removed, will be exposed inside the ventilation duct. If dust or leaves adhere to the resistor, it may cause a fire, and when replacing the resistor, there is a problem in that it is complicated to find and retrieve the dislodged heat dissipation fin from the ventilation duct.
また、放熱板と放熱フインとを形状記憶合金製
のばねを介して連結してなる速度制御用抵抗器
は、異常事態発生時に放熱フインが離脱すること
はないが、伸長すべき所定温度に達したにも拘ら
ず、予め記憶させておいた形状（伸長状態）に変
化しないことがあり、信頼性若しくは安定性に問
題があるとともに、形状記憶合金製のばねは高価
であり、コストアツプの一因にもなつていた。 In addition, in a speed control resistor in which a heat dissipation plate and a heat dissipation fin are connected via a shape memory alloy spring, the heat dissipation fin will not come off when an abnormal situation occurs, but it will reach a predetermined temperature at which it should expand. Even though springs are made of shape memory alloys, they may not change to the pre-memorized shape (stretched state), which poses problems with reliability or stability, and springs made of shape memory alloys are expensive, contributing to increased costs. I was used to it.
この考案が解決しようとする技術的課題は、放
熱フインを離脱させずに抵抗体を溶断させるとと
もに、コストを抑制しつつ高い信頼性と安定性と
を確保するという２つの要請に同時に応えること
ができる車両用送風機の速度制御用抵抗器を提供
することである。 The technical problem that this invention aims to solve is to simultaneously meet the two demands of melting down the resistor without removing the heat dissipation fins, and ensuring high reliability and stability while keeping costs down. An object of the present invention is to provide a speed control resistor for a vehicle blower.
（課題を解決するための手段）
上述の課題を解決するためこの考案は、絶縁基
板の表面に設けられ、過電流が流れると溶断する
抵抗体と、この抵抗体の所定個所にそれぞれ接続
してある複数の抵抗値可変端子と、前記抵抗体に
生じた熱を放出する放熱フインとを備えた車両用
送風機の速度制御用抵抗器において、前記放熱フ
インを前記絶縁基板の表面に所定の隙間をもたせ
て固定し、前記隙間に低融点物質を充填した。(Means for Solving the Problems) In order to solve the above-mentioned problems, this invention has a resistor that is provided on the surface of an insulating substrate and melts when an overcurrent flows, and a resistor that is connected to predetermined points of the resistor. In a resistor for speed control of a vehicle blower, which includes a plurality of variable resistance value terminals and a heat dissipation fin that radiates heat generated in the resistor, the heat dissipation fin is provided with a predetermined gap on the surface of the insulating substrate. It was held upright and fixed, and the gap was filled with a low melting point substance.
（作用）
上述のように前記放熱フインを前記絶縁基板の
表面に所定の隙間をもたせて固定し、前記隙間に
低融点物質を充填したので、放熱フインによる放
熱量が減少して抵抗器全体の温度が上昇すると、
低融点物質が溶融して流出し、放熱フインと絶縁
基板の表面とに隙間が生じるが、依然として放熱
フインは絶縁基板に固定されており、放熱フイン
は離脱せず、その結果絶縁基板の表面は露出しな
い。(Function) As described above, since the heat dissipation fin is fixed to the surface of the insulating substrate with a predetermined gap and the gap is filled with a low melting point substance, the amount of heat dissipated by the heat dissipation fin is reduced and the overall resistance of the resistor is reduced. As the temperature rises,
The low melting point substance melts and flows out, creating a gap between the heat dissipation fin and the surface of the insulating substrate, but the heat dissipation fin is still fixed to the insulating substrate, and the heat dissipation fin does not separate, resulting in the surface of the insulating substrate Not exposed.
また、隙間が生じる結果、抵抗体から放熱フイ
ンに伝わる熱の量が減り、放熱量は一層減少する
ので、過電流によりジユール熱が発生して高温状
態にある抵抗体は更に温度が上昇して溶断する。 In addition, as a result of the gap, the amount of heat transferred from the resistor to the heat dissipation fins is reduced, and the amount of heat dissipated is further reduced, so the overcurrent generates Joule heat, causing the high temperature resistor to further rise in temperature. To melt.
（実施例）
以下、この考案の一実施例を図面に基づいて説
明する。(Example) Hereinafter, an example of this invention will be described based on the drawings.
第２図は速度制御用抵抗器１の取付位置を示
し、２は車両用空調装置の樹脂製の通風ダクト、
３は送風機、４は送風機を作動させる送風機モー
タである。速度制御用抵抗器１は通風ダクト２内
に取り付けてあり、送風機４からの風により強制
的に冷却されるようにしてある。 Figure 2 shows the mounting position of the speed control resistor 1, 2 is a resin ventilation duct of the vehicle air conditioner,
3 is a blower, and 4 is a blower motor for operating the blower. The speed control resistor 1 is installed in a ventilation duct 2, and is forcibly cooled by air from a blower 4.
前記速度制御用抵抗器１は第１図に示すように
例えばセラミツク等の耐熱性の絶縁基板５を備え
ており、この絶縁基板５の表面には、第３図に示
すように、過電流により生ずるジユール熱で溶断
する合金を抵抗体２０として蒸着し、この抵抗体
には溶断し易いようにくびれた溶断部２０ａが形
成してある。 As shown in FIG. 1, the speed control resistor 1 is equipped with a heat-resistant insulating substrate 5 made of ceramic or the like, and as shown in FIG. An alloy that melts due to the generated Joule heat is deposited as a resistor 20, and this resistor has a constricted fusing portion 20a to facilitate fusing.
前記絶縁基板５上にはセンメト収容部８ａを有
する放熱板８が取り付けてあり、この放熱板８と
絶縁基板５との空間には図示しないセメントが充
填してある。放熱板８と絶縁基板５とはスペーサ
１０を介してボルト１１で取付板１２に固定して
ある。また、抵抗体２０の所定個所にそれぞれ接
続された抵抗値可変端子１３を絶縁基板５から垂
下させ、それらの抵抗値可変端子１３の中間屈曲
部１３ａをビス１４により取付板１２に固定して
ある。端子先端部１３ｂを取付板１２の図示しな
い端子貫通孔から逃がす。また、端子貫通孔から
突き出た端子先端部１３ｂは取付板１２に固定し
たコネクタハウジング７で覆われている。 A heat radiating plate 8 having a cement accommodating portion 8a is mounted on the insulating substrate 5, and a space between the heat radiating plate 8 and the insulating substrate 5 is filled with cement (not shown). The heat sink 8 and the insulating substrate 5 are fixed to a mounting plate 12 with bolts 11 via spacers 10. Further, variable resistance terminals 13 connected to predetermined locations of the resistor 20 are suspended from the insulating substrate 5, and intermediate bent portions 13a of the variable resistance terminals 13 are fixed to the mounting plate 12 with screws 14. . The terminal tip portion 13b is released from the terminal through hole (not shown) of the mounting plate 12. Further, the terminal tip end portion 13b protruding from the terminal through hole is covered with a connector housing 7 fixed to the mounting plate 12.
前記放熱板８上には放熱フイン１５が取り付け
てある。放熱フイン１５の底面１６にはつめ部１
７が突き出ている。これらのつめ部１７により放
熱フイン１５の底面１６と放熱板８の表面６との
間にはつめ部１７の高さに相当する隙間が生じ
る。この隙間には低融点物質１８として例えば
200度で溶融するはんだなどの低融点合金や鉛な
どの低融点金属が充填してある。 A heat dissipation fin 15 is attached on the heat dissipation plate 8. A claw portion 1 is provided on the bottom surface 16 of the heat dissipation fin 15.
7 is sticking out. These pawls 17 create gaps corresponding to the height of the pawls 17 between the bottom surface 16 of the radiation fin 15 and the surface 6 of the heat sink 8 . In this gap, as a low melting point substance 18, for example,
It is filled with a low melting point alloy such as solder that melts at 200 degrees, or a low melting point metal such as lead.
また、放熱フイン１５は絶縁基板５にボルト１
９で固定してある。 Further, the heat dissipation fin 15 is attached to the insulating substrate 5 by a bolt 1.
It is fixed at 9.
上述のように構成された抵抗器は通風ダクト２
内に装着され、また送風機モータ４と図示しない
電源との間に直列に接続されて回路素子の１つを
構成する。 The resistor configured as described above is connected to the ventilation duct 2.
It is also connected in series between the blower motor 4 and a power supply (not shown) to constitute one of the circuit elements.
次に、送風機モータ４のロツクや短絡等の異常
事態が生じたときの速度制御用抵抗器１の作用に
ついて述べる。 Next, the action of the speed control resistor 1 when an abnormal situation such as locking or short circuit of the blower motor 4 occurs will be described.
速度制御用抵抗器１への送風が停止され、放熱
量が減少するので、速度制御用抵抗器１が温度上
昇し、所定の高い温度（例えば200度）に達した
とき、低融点物質１８のはんだが溶融して流出
し、放熱フイン１５の底面１６と放熱板８の表面
６との間につめ部１７の高さに相当する隙間が生
じる。したがつて、抵抗体２０の熱が放熱フイン
１５側にほとんど伝わらなくなるので、放熱量が
更に減少し、過電流により生じるジユール熱のた
めに高温状態にある抵抗体２０は更に温度が上昇
して溶断部２０ａで溶断する。その結果、電源か
ら送風機モータ４への通電が断たれる。 Since the air blowing to the speed control resistor 1 is stopped and the amount of heat radiation is reduced, the temperature of the speed control resistor 1 increases and when it reaches a predetermined high temperature (for example, 200 degrees), the low melting point substance 18 The solder melts and flows out, and a gap corresponding to the height of the claw portion 17 is created between the bottom surface 16 of the heat dissipation fin 15 and the surface 6 of the heat dissipation plate 8. Therefore, almost no heat from the resistor 20 is transferred to the radiation fin 15 side, so the amount of heat radiation is further reduced, and the temperature of the resistor 20, which is in a high temperature state due to the heat generated by the overcurrent, further increases. It is fused at the fused portion 20a. As a result, the power supply to the blower motor 4 from the power supply is cut off.
なお、上述の実施例においては放熱フイン１５
を放熱板８を介して絶縁基板５の表面に固定した
場合について述べたが、これに代え、放熱フイン
１５を絶縁基板５の表面に直接固定するようにし
ても、上述の実施例の場合と同様の作用効果を得
ることができる。 In addition, in the above-mentioned embodiment, the heat dissipation fin 15
Although the case has been described in which the heat dissipation fins 15 are fixed to the surface of the insulating substrate 5 via the heat dissipation plate 8, even if the heat dissipation fins 15 are directly fixed to the surface of the insulating substrate 5 instead of this, the same effect as in the above embodiment is achieved. Similar effects can be obtained.
また、上述の実施例においてはつめ部１７を放
熱フイン１５に設けた場合について述べたが、こ
れに代え、放熱板８側に設けるようにしてもよい
し、放熱板８を使用しないときは、絶縁基板５の
表面に設けるようにしてもよい。 Further, in the above embodiment, the case where the claw portion 17 is provided on the heat sink fin 15 has been described, but instead of this, it may be provided on the heat sink 8 side, or when the heat sink 8 is not used, It may also be provided on the surface of the insulating substrate 5.
（考案の効果）
以上説明したように本考案の車両用送風機の速
度制御用抵抗器によれば、放熱フインを絶縁基板
の表面に所定の隙間をもたせて固定し、前記隙間
に低融点物質を充填したので、放熱フインによる
放熱量が減少して抵抗器全体の温度が上昇する
と、低融点物質が溶融して流出し、放熱フインと
絶縁基板の表面に隙間が生じるが、依然として放
熱フインは絶縁基板に固定されており、放熱フイ
ンは離脱せず、その結果絶縁基板の表面は露出し
ない。したがつて、通風ダクト内のゴミや枯葉な
どが抵抗体に付着して発火することがないととも
に、放熱フインの回収が不要になり、抵抗器の交
換作業が容易になる。(Effects of the invention) As explained above, according to the speed control resistor for a vehicle blower of the invention, the heat dissipation fin is fixed to the surface of the insulating substrate with a predetermined gap, and a low melting point substance is injected into the gap. As the heat dissipation fins are filled, the amount of heat dissipated by the heat dissipation fins decreases and the temperature of the entire resistor rises.The low melting point substance melts and flows out, creating a gap between the heat dissipation fins and the surface of the insulating substrate, but the heat dissipation fins are still insulated. Since it is fixed to the substrate, the heat radiation fins do not come off, and as a result, the surface of the insulating substrate is not exposed. Therefore, dust, dead leaves, etc. in the ventilation duct will not adhere to the resistor and cause a fire, and there will be no need to collect the heat dissipation fins, making it easier to replace the resistor.
また、低融点物質を溶融させて放熱フインと絶
縁基板上の表面との間に隙間を生じさせ、抵抗体
から放熱フインに伝わる熱の量を減らし、過電流
により高温状態にある抵抗体の温度を更に上昇さ
せて溶断させる。したがつて、抵抗体が所定温度
に達した時点で、確実に放熱フインを絶縁基板の
表面から遠ざけることができ、抵抗器の信頼性若
しくは安定性が向上し、しかもコストの抑制に資
する。 In addition, by melting a low-melting point substance to create a gap between the heat dissipation fin and the surface of the insulating substrate, the amount of heat transferred from the resistor to the heat dissipation fin is reduced, and the temperature of the resistor, which is in a high temperature state due to overcurrent, is reduced. further rise and fuse. Therefore, when the resistor reaches a predetermined temperature, the heat dissipation fin can be reliably moved away from the surface of the insulating substrate, improving the reliability or stability of the resistor and contributing to cost reduction.
第１図はこの本考案の一実施例に係る車両用送
風機の速度制御用抵抗器の一部を破砕した拡大正
面図、第２図はその速度制御用抵抗器の取付位置
を示す説明図、第３図は第１図の−線矢視断
面図である。
５……絶縁基板、１３……抵抗値可変端子、１
５……放熱フイン、１８……低融点物質、２０…
…抵抗体。
FIG. 1 is an enlarged front view of a partially crushed speed control resistor of a vehicle blower according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the mounting position of the speed control resistor. FIG. 3 is a sectional view taken along the - line in FIG. 1. 5... Insulating board, 13... Resistance variable terminal, 1
5... Heat radiation fin, 18... Low melting point substance, 20...
...Resistor.
Claims (1)
溶断する抵抗体と、この抵抗体の所定個所にそれ
ぞれ接続してある複数の抵抗値可変端子と、前記
抵抗体に生じた熱を放出する放熱フインとを備え
た車両用送風機の速度制御用抵抗器において、前
記放熱フインを前記絶縁基板の表面に所定の隙間
をもたせて固定し、前記隙間に低融点物質を充填
したことを特徴とする車両用送風機の速度制御用
抵抗器。 A resistor for controlling the speed of a vehicle blower, comprising: a resistor provided on the surface of an insulating substrate, which melts when an overcurrent flows through it; a plurality of variable resistance terminals each connected to a predetermined location on the resistor; and a heat dissipation fin for dissipating heat generated in the resistor, wherein the heat dissipation fin is fixed to the surface of the insulating substrate with a predetermined gap therebetween, and the gap is filled with a low melting point substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10469789U JPH0528721Y2 (en) | 1989-09-06 | 1989-09-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10469789U JPH0528721Y2 (en) | 1989-09-06 | 1989-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0343701U JPH0343701U (en) | 1991-04-24 |
| JPH0528721Y2 true JPH0528721Y2 (en) | 1993-07-23 |
Family
ID=31653483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10469789U Expired - Lifetime JPH0528721Y2 (en) | 1989-09-06 | 1989-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528721Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2904103B1 (en) * | 2006-07-18 | 2015-05-15 | Airbus France | HEAT FLOW DEVICE |
-
1989
- 1989-09-06 JP JP10469789U patent/JPH0528721Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0343701U (en) | 1991-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR920000868Y1 (en) | Control device for a blower | |
| JP2872002B2 (en) | fuse | |
| AU725850B2 (en) | Thermally fused resistor | |
| JPH0528721Y2 (en) | ||
| JP2002184282A (en) | Fuse element and chip fuse | |
| KR100453299B1 (en) | Blower resistor | |
| JPS62229801A (en) | Resistor for speed controller of automobile blower | |
| JPH10172413A (en) | Adjustment method of fuse pre-arcing time-current characteristics and fuse structure | |
| JPH09231892A (en) | Resistor with temperature fuse | |
| JPH0751925Y2 (en) | Resistors for controlling blowers of automobile air conditioners | |
| JPH09134654A (en) | Air blower control resistor of air conditioner for automobile and its manufacture | |
| JPH0618805Y2 (en) | Blower control device for automobile air conditioner | |
| JPH0755130Y2 (en) | Resistors for controlling blowers of automobile air conditioners | |
| KR0125056Y1 (en) | Blower resistor | |
| JP2563499Y2 (en) | Blower control resistors for automotive air conditioners | |
| JPH073560Y2 (en) | Blower control device for automobile air conditioner | |
| JPH0745171A (en) | Overload protective device for motor | |
| JP2505566B2 (en) | Method of manufacturing resistor with temperature fuse | |
| JPS6313808A (en) | Speed control resistor of blower for automobile | |
| JPS6046507B2 (en) | Thick film fuse and its manufacturing method | |
| JPS62211901A (en) | Resistor for speed control of automobile blower | |
| JPH071822B2 (en) | Method of manufacturing resistive circuit board with thermal fuse | |
| KR0117633Y1 (en) | The speed adjustable resistor of a motor | |
| JPS62244101A (en) | Resistor for speed control of automobile blower | |
| JP2964749B2 (en) | Resistor assembly for blower speed regulation |