JPH0110877Y2 - - Google Patents
Info
- Publication number
- JPH0110877Y2 JPH0110877Y2 JP9563084U JP9563084U JPH0110877Y2 JP H0110877 Y2 JPH0110877 Y2 JP H0110877Y2 JP 9563084 U JP9563084 U JP 9563084U JP 9563084 U JP9563084 U JP 9563084U JP H0110877 Y2 JPH0110877 Y2 JP H0110877Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheath tube
- bobbin
- heating wire
- heating
- heating element
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はモールド型加熱用及び温水加熱用等に
使用されるカートリツジヒータに関するものであ
る。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cartridge heater used for heating molds, heating hot water, and the like.
（従来の技術）
従来、この種のカートリツジヒータは第３図に
示す如く金属管７の一端に金属製の円板８を溶着
してシース管４を構成し、一方外周に電熱線２を
巻回したボビン１の貫通孔１１，１２に端子棒３
１，３２を挿通し、その端子棒３１，３２の夫々
の一端に電熱線２の一端及び他端を接続して形成
した発熱体２３を前記シース間４に挿入し、シー
ス間４の開口に前記端子棒３１，３２を突出して
配置し、且つ発熱体２３とシース管４の隙懐に電
気絶縁粉末５を充てんし、その後シース管４を減
径したものである。(Prior Art) Conventionally, this type of cartridge heater has a sheath tube 4 formed by welding a metal disc 8 to one end of a metal tube 7, as shown in FIG. 3, and a heating wire 2 on the outer circumference. Insert the terminal rod 3 into the through holes 11 and 12 of the wound bobbin 1.
1 and 32, and the heating element 23 formed by connecting one end and the other end of the heating wire 2 to one end of each of the terminal bars 31 and 32 is inserted into the space between the sheaths 4, and the heating element 23 is inserted into the opening of the space between the sheaths 4. The terminal rods 31 and 32 are arranged to protrude, and the gap between the heating element 23 and the sheath tube 4 is filled with electrical insulating powder 5, and then the sheath tube 4 is reduced in diameter.
（考案が解決しようとする問題点）
上記のカートリツジヒータは電熱線２と端子棒
３１，３２は単に接触のみで接続されておりボビ
ン１の貫通孔１１，１２内の電熱線２と端子棒３
１又は３２間に電気絶縁物が入り込み、しばしば
接触不良が発生するという欠点があり又、丸形状
同志が並行に接する方向のため、接触が不完全と
なる場合があり、使用時短時間で導通不良が発生
するという欠点があつた。(Problem to be Solved by the Invention) In the above cartridge heater, the heating wire 2 and the terminal bars 31 and 32 are connected only by contact, and the heating wire 2 and the terminal bar in the through holes 11 and 12 of the bobbin 1 are connected only by contact. 3
There is a disadvantage that electrical insulating material gets between 1 and 32, often causing poor contact.Also, because the round shapes touch each other in parallel, contact may be incomplete, and conduction may fail in a short time during use. There was a drawback that this occurred.
（問題点を解決するための手段）
本考案は上記の欠点を解消し、電熱線と端子棒
の接触を良好にし、信頼性の高いカートリツジヒ
ータを得るにある。そのために電熱線を折返して
ボビンの貫通孔内に挿通し、それに端子棒を接触
させたものである。(Means for Solving the Problems) The object of the present invention is to eliminate the above-mentioned drawbacks, improve the contact between the heating wire and the terminal bar, and obtain a highly reliable cartridge heater. For this purpose, the heating wire is folded back and inserted into the through hole of the bobbin, and the terminal bar is brought into contact with it.
（考案の作用）
これによつてシース管の減径時に電熱線が端子
棒に強くくい込み、接触面積が大きくなり、接触
が確実となるものである。(Function of the invention) As a result, the heating wire strongly bites into the terminal bar when the diameter of the sheath tube is reduced, the contact area becomes large, and the contact becomes reliable.
（考案の実施例）
以下、本考案の一実施例を第１図及び第２図に
従つて説明する。(Embodiment of the invention) An embodiment of the invention will be described below with reference to FIGS. 1 and 2.
図において、１はボビン、２はこのボビン１の
外周に巻回した電熱線３１，３２はボビン１の貫
通孔１１，１２に挿通した端子棒で、これらで発
熱体が構成されている。４はシース管、５はシー
ス管４と発熱体との間に充てんした電気絶縁粉末
でこれらは第３図のものと同様である。 In the figure, 1 is a bobbin, and 2 is a terminal rod that is wound around the outer periphery of the bobbin 1. Heating wires 31 and 32 are inserted into through holes 11 and 12 of the bobbin 1, and these constitute a heating element. Reference numeral 4 denotes a sheath tube, and 5 denotes electrical insulating powder filled between the sheath tube 4 and the heating element, which are similar to those shown in FIG.
本考案においては電熱線２の両端２１，２２を
折返して貫通孔１１，１２内に挿通し、その折返
した両端２１，２２に端子棒３１，３２を接触さ
せたものである。 In the present invention, both ends 21 and 22 of the heating wire 2 are folded back and inserted into the through holes 11 and 12, and the terminal rods 31 and 32 are brought into contact with the folded ends 21 and 22.
次にその作用について述べる。 Next, we will discuss its effect.
ボビン１の内部で電熱線２の折り返し部と、端
子棒３１，３２がほぼ直角に交わるため、シース
管減径時に他の平行に交わつている部分よりも電
熱線２が端子棒３１に強くくいこみ、互いの接触
が確実となる。又、貫通孔１１，１２に電熱線２
が２本通つており、接触面積が１本の場合より増
加し、信頼性が向上する。 Inside the bobbin 1, the folded part of the heating wire 2 and the terminal bars 31, 32 intersect at almost right angles, so when the sheath tube diameter is reduced, the heating wire 2 bites into the terminal bar 31 more strongly than other parts that intersect in parallel. , mutual contact is ensured. In addition, heating wires 2 are inserted into the through holes 11 and 12.
Since two wires pass through the wire, the contact area is increased compared to the case where there is only one wire, and reliability is improved.
（考案の効果）
以上述べたように本考案によるとボビンの貫通
孔内で電熱線を折り返し、端子棒とほぼ直交する
部分を設け、又、接触面積が増えたことにより、
端子棒と電熱線の接触が確実となり信頼性の高い
カートリツジヒータを得ることができるものであ
る。(Effects of the invention) As described above, according to the invention, the heating wire is folded back within the through hole of the bobbin to provide a part that is almost perpendicular to the terminal bar, and the contact area is increased.
The contact between the terminal bar and the heating wire is ensured, and a highly reliable cartridge heater can be obtained.
第１図は本考案のカートリツジヒータの断面
図、第２図は第１図のＡ−Ａ断面図、第３図は従
来のカートリツジヒータの断面図である。
１……ボビン、２……電熱線、４……シース
管。
FIG. 1 is a sectional view of the cartridge heater of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view of a conventional cartridge heater. 1...Bobbin, 2...Heating wire, 4...Sheath tube.
Claims (1)
を挿入するとともに、このシース管４と発熱体の
隙間に電気絶縁粉末５を充てんし、このシース管
４を減径してなるカートリツジヒータにおいて、
前記発熱体を構成する電熱線２をボビン１に巻回
し、その両端２１，２２を折返してボビン１の貫
通孔１１，１２に挿通し、さらに前記貫通孔１
１，１２内に折返した電熱線２にそつて端子棒３
１，３２を挿入し、シース管４を減径してなるカ
ートリツジヒータ。 A cartridge heater made by inserting a heating element into a metal sheath tube 4 with an open end, filling the gap between the sheath tube 4 and the heating element with electrical insulating powder 5, and reducing the diameter of the sheath tube 4. In,
The heating wire 2 constituting the heating element is wound around the bobbin 1, its both ends 21 and 22 are folded back and inserted into the through holes 11 and 12 of the bobbin 1, and the heating wire 2 is inserted into the through holes 11 and 12 of the bobbin 1.
Terminal bar 3 along heating wire 2 folded inside 1, 12
1 and 32 and the diameter of the sheath tube 4 is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563084U JPS6111293U (en) | 1984-06-26 | 1984-06-26 | Cartridge heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563084U JPS6111293U (en) | 1984-06-26 | 1984-06-26 | Cartridge heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6111293U JPS6111293U (en) | 1986-01-23 |
| JPH0110877Y2 true JPH0110877Y2 (en) | 1989-03-29 |
Family
ID=30654854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9563084U Granted JPS6111293U (en) | 1984-06-26 | 1984-06-26 | Cartridge heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6111293U (en) |
-
1984
- 1984-06-26 JP JP9563084U patent/JPS6111293U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6111293U (en) | 1986-01-23 |
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