JPH0133980Y2 - - Google Patents
Info
- Publication number
- JPH0133980Y2 JPH0133980Y2 JP1984072325U JP7232584U JPH0133980Y2 JP H0133980 Y2 JPH0133980 Y2 JP H0133980Y2 JP 1984072325 U JP1984072325 U JP 1984072325U JP 7232584 U JP7232584 U JP 7232584U JP H0133980 Y2 JPH0133980 Y2 JP H0133980Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode shaft
- insulating tube
- center hole
- connecting portion
- electrode
- 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
- 239000012212 insulator Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Spark Plugs (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は燃焼機器の圧電着火装置に用いる火花
放電電極として好適に使用される火花放電部材に
関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a spark discharge member suitably used as a spark discharge electrode for use in a piezoelectric ignition device for combustion equipment.
「従来の技術」
絶縁碍管の中心孔に、該中心孔の内壁面に当接
するように中央部分を屈曲させ、該絶縁碍管から
突出させた一端に放電部、他端に電纜の芯線と電
気的に導通する接続部をそれぞれ形成した径小の
電極軸を挿入し、固定を確実ならしめるため耐熱
セメントあるいは低融点ガラス等の接着剤を封入
して硬化、固定した火花放電部材が広く実用され
ているが、耐熱セメントの硬化、低融点ガラスの
溶融は数百度以上、1000℃近くの加熱を必要とす
るので接合の手間だけでなく、加熱設備を要し、
また冷却に長時間を要する等、量産に難点がある
だけでなく、この種の火花放電部材は15〜20KV
にも達する高電圧に対する絶縁長が要求され、し
かも高温のガス器具の内部、あるいはこれに近接
して設置されるから、磁器等からなる絶縁碍管と
金属の電極軸との間に不可避的に生ずる大きな軸
線方向の熱膨張差によつて接着剤にクラツクが発
生して接合力を失ない、あるいは特に接着力が強
固な場合は絶縁碍管にクラツクを発生させる怖れ
さえあつた。``Prior art'' A central part of an insulating tube is bent so as to be in contact with the inner wall surface of the center hole, and one end protruding from the insulating tube has a discharge section, and the other end has a core wire and an electrical wire. Spark discharge members are widely used, in which small-diameter electrode shafts each formed with a conductive connection are inserted into the electrode shaft, and an adhesive such as heat-resistant cement or low-melting glass is filled in to secure the fixation. However, curing of heat-resistant cement and melting of low-melting glass requires heating of several hundred degrees or more, close to 1000 degrees Celsius, which requires not only the labor of joining but also heating equipment.
In addition, not only are there difficulties in mass production, such as the long time it takes to cool down, but this type of spark discharge material requires a voltage of 15 to 20KV.
Insulation lengths are required to withstand high voltages that can reach up to 100%, and because they are installed inside or close to high-temperature gas appliances, insulation inevitably occurs between the insulating tube made of porcelain or the like and the metal electrode shaft. Due to the large difference in thermal expansion in the axial direction, cracks may occur in the adhesive and the bonding strength will not be lost, or if the adhesive strength is particularly strong, there is a risk that cracks may occur in the insulating pipe.
また、上記の接着剤に代えて絶縁碍管の中心孔
を挿通した電極軸を、該中心孔の一方の端面付近
に形成した径大の段座面において座定し、同じく
中心孔の他端から突出する部分にねじを刻設し、
これと螺合するナツトを用いて絶縁碍管と機械的
に固定することもできるが、この場合は前に述べ
た軸線方向の熱膨張差によつて両者間に緩みを生
ずる怖れがあり、このため上記の接着剤を併用す
る必要があり、満足すべきものは得られなかつ
た。 In addition, instead of using the adhesive described above, the electrode shaft inserted through the center hole of the insulating pipe is seated on a large-diameter stepped surface formed near one end surface of the center hole, and the electrode shaft is also inserted from the other end of the center hole. Carve a screw into the protruding part,
It is also possible to mechanically fix it to the insulating pipe using a nut that screws into it, but in this case there is a risk of loosening between the two due to the difference in thermal expansion in the axial direction mentioned earlier. Therefore, it was necessary to use the above adhesives in combination, and a satisfactory result could not be obtained.
「考案が解決しようとする問題点」
本考案は上記の接着剤を用いることなく、充分
な耐久性を具えた火花放電部材を提供しようとす
るものである。``Problems to be Solved by the Invention'' The present invention attempts to provide a spark discharge member with sufficient durability without using the above-mentioned adhesive.
「問題点を解決するための手段」
接着剤を使用することなく絶縁碍管と電極軸を
強固に接合するため、絶縁碍管の一方の端面にお
いて電極軸を座定、支承し、該電極軸を挿通した
絶縁碍管の中心孔の他方の端面を径大とし、上記
電極軸の他端に形成した外部のリード線の芯線に
圧入、導通する軸線方向の凹凸からなる接続部と
の間に形成される環状空隙の底部座面に断面が逆
ハの字状を呈するように弾性座板を圧入するもの
である。"Means for solving the problem" In order to firmly join the insulating tube and the electrode shaft without using adhesive, the electrode shaft is seated and supported on one end surface of the insulating tube, and the electrode shaft is inserted. The other end surface of the center hole of the insulated insulating tube has a larger diameter, and is press-fitted into the core wire of the external lead wire formed at the other end of the electrode shaft, and is formed between the connecting portion and the connecting portion consisting of unevenness in the axial direction. An elastic seat plate is press-fitted into the bottom seat of the annular gap so that its cross section has an inverted V-shape.
「作用」
電極軸は上記の通り、絶縁碍管の中心孔の一方
の端面に設けた座面に支承され、他方の端面の座
面において該電極軸に形成した凹凸部分と係合す
る弾性座板を断面が逆ハの字状を呈するように圧
入、固定したから、電極軸は軸線方向の大きな張
力を受けることになり、この張力により電極軸を
絶縁碍管とを確実に固定すると共に両者の熱膨張
差に起因する熱歪も吸収する。"Function" As mentioned above, the electrode shaft is supported by a seat provided on one end face of the center hole of the insulating pipe, and an elastic seat plate that engages with the uneven portion formed on the electrode shaft on the seat face of the other end face. Since the electrode shaft is press-fitted and fixed so that its cross section has an inverted V shape, the electrode shaft is subjected to a large tension in the axial direction.This tension securely fixes the electrode shaft and the insulating tube, and also reduces heat between It also absorbs thermal strain caused by differential expansion.
「実施例」
第１図は本考案の火花放電部材を示し、１は高
アルミナ磁器等からなる絶縁碍管を示し、中心孔
１１の一方の端面に、電極軸２に形成した断面が
十字状を呈する回り止め２１と嵌合して該電極軸
を回動不能に座定する座面１２を設け他方の端面
には上記中心孔１１から段座面１３ａによつて拡
開される径大部１３を形成する。上記電極軸２は
耐食性、耐火花放電特性に優れたニツケル合金等
からなり、上記絶縁碍管の中心孔１１を緩く挿通
すると共に上記の座面１２によつて座定される回
り止め２１の上方に、他方の電極（図示省略）と
対向して火花放電間隙を構成する放電部２２と、
下方に高圧電纜の芯線（図示省略）と中に圧入、
導通する小さいピツチのねじ、あるいはローレツ
ト等軸線方向の凹凸を具えた接続部２３を具え
る。３は該電極軸の接続部２３の凹凸と係合、上
記絶縁碍管軸孔の他方の端面の径大部１３と、電
極軸２の接続部２３との間に形成される環状空隙
内に圧入された断面を逆ハの字状に圧入して両者
を固定する弾性座板である。なお、絶縁体１の胴
部に形成した凹部１４は環状又は平行の切削面で
燃焼機器等に装着する際、固定部材（図示省略）
によつて挾持するためのものである。"Example" Fig. 1 shows a spark discharge member of the present invention, 1 is an insulating tube made of high alumina porcelain, etc., and the cross section formed on the electrode shaft 2 is formed on one end surface of the center hole 11. A seating surface 12 is provided to seat the electrode shaft unrotatably by engaging with a rotation stopper 21, and the other end surface is provided with a large diameter portion 13 which is expanded from the center hole 11 by a step seating surface 13a. form. The electrode shaft 2 is made of a nickel alloy or the like with excellent corrosion resistance and spark discharge resistance, and is inserted loosely through the center hole 11 of the insulating tube and above the detent 21 seated by the seat surface 12. , a discharge section 22 that faces the other electrode (not shown) and forms a spark discharge gap;
The core wire of the high-voltage cable (not shown) is press-fitted into the bottom.
The connecting portion 23 is provided with a small pitch screw or knurled concave and convex portion in the axial direction. 3 engages with the unevenness of the connecting portion 23 of the electrode shaft, and is press-fitted into the annular gap formed between the large diameter portion 13 of the other end face of the insulating tube shaft hole and the connecting portion 23 of the electrode shaft 2. This is an elastic seat plate that fixes the two by press-fitting the cross section into an inverted V-shape. Note that the recess 14 formed in the body of the insulator 1 has an annular or parallel cut surface and can be used as a fixing member (not shown) when attached to a combustion appliance, etc.
It is intended to be held in place by.
本例において絶縁体の中心孔１１内の一方の端
面に座定される電極軸の係合部を、電極軸の放電
部２２の下方において対向する外側面を部分的に
加圧して一対の板状突起２１ａ，２１ａを形成
し、一方絶縁碍管側は一端面にこれと嵌合する凹
部を、素体の鋳込み、あるいはラバープレス成型
時の芯型によつて形成した後焼成して組合せた態
様について示したが、該係合部は必ずしも径方向
の回動を制止する要なく、例えば第２図のように
電極軸の放電部２２の下方に形成した環状の溝２
１′にＣリングあるいはＥリング４を圧接しても
よく、また常法によつて図示しない鍔を打出して
もよい。 In this example, the engaging portion of the electrode shaft seated on one end surface in the center hole 11 of the insulator is pressed against the opposing outer surfaces below the discharge portion 22 of the electrode shaft to form a pair of plates. A mode in which the shaped protrusions 21a, 21a are formed, and on the other hand, on the insulating tube side, a recessed part that fits with the protrusions is formed by casting the element body or by using a core mold during rubber press molding, and then firing. However, the engaging part does not necessarily have to stop rotation in the radial direction, and for example, as shown in FIG.
A C-ring or an E-ring 4 may be pressed onto 1', or a collar (not shown) may be punched out using a conventional method.
「考案の効果」
本考案の火花放電部材は、以上の通り絶縁碍管
の一方の端面において電極軸を座定、支承し該電
極軸を挿通した絶縁碍管の中心孔の他方の端面を
径大とし、電極軸の他端に形成した軸線方向の凹
凸からなる電纜の芯線と導通する接続部との間に
形成される境状空隙の底部座面に、上記電極軸の
凹凸部と係合する弾性座板を、前記絶縁碍管中心
孔の径大部の底面に形成される座面に断面が逆ハ
の字状を呈するように圧入して弾接、係止して電
極軸に大きな張力を与えて絶縁碍管に固定するも
のであるから、従来の接着剤による固定を不要と
するので、組付け作業性の改善、製造コストの引
下げ等を図り、また絶縁碍管と電極軸との熱膨張
差による歪みをも吸収して耐久性を同時に向上し
得る効果がある。"Effect of the invention" As described above, the spark discharge member of the invention seats and supports the electrode shaft on one end surface of the insulating tube, and enlarges the diameter of the other end surface of the center hole of the insulating tube through which the electrode shaft is inserted. , an elastic material that engages with the uneven portion of the electrode shaft on the bottom seat surface of the boundary gap formed between the core wire of the electrical wire and the conductive connecting portion, which is formed on the other end of the electrode shaft and has unevenness in the axial direction. The seat plate is press-fitted into the seat surface formed at the bottom of the large-diameter portion of the center hole of the insulating tube so that its cross section has an inverted V-shape, and the seat plate is elastically contacted and locked to apply a large tension to the electrode shaft. Since it is fixed to the insulating tube by using the insulating tube, it eliminates the need for conventional fixing with adhesives, improving assembly workability and reducing manufacturing costs. It has the effect of absorbing distortion and improving durability at the same time.
図面は本考案の火花放電部材を示し、第１図Ａ
は一部を残して切截した縦断面図、同図ＢはＡ図
イ−イ線に沿う横断面図、また第２図は絶縁碍管
に対して電極軸の放電部側を座定する他の手段を
示し、Ａ図は縦断面図、Ｂ図は上面図である。
１……絶縁碍管、１１……中心孔、１３……径
大部、１３ａ……底部座面、２……電極軸、２２
……放電部、２３……接続部、３……弾性座板。
The drawings show the spark discharge member of the present invention, and FIG.
Figure B is a cross-sectional view taken along the line E-A in Figure A, and Figure 2 is a vertical cross-sectional view taken with a portion left open. Fig. A is a longitudinal sectional view, and Fig. B is a top view. DESCRIPTION OF SYMBOLS 1... Insulating pipe, 11... Center hole, 13... Large diameter part, 13a... Bottom seat surface, 2... Electrode shaft, 22
...Discharge part, 23...Connection part, 3...Elastic seat plate.
Claims (1)
通する軸線方向の凹凸からなる接続部２３を形成
した電極軸２を、絶縁碍管１の中心孔１１に挿
通、上記放電部２２を前方に突出させて座定し、
上記電極軸の他端の接続部２３と、該接続部の周
囲に形成された絶縁碍管中心孔の径大部１３によ
つて形成される環状空隙に、上記電極軸の接続部
２３の凹凸と係合し、環状空隙の底部座面１３ａ
に弾圧、係止される弾性座板３を断面が逆ハの字
状を呈するように圧入して電極軸２を絶縁碍官１
に固定してなる燃焼機器の火花放電部材。 The electrode shaft 2, which has a discharge part 22 at one end and a connection part 23 consisting of an axial unevenness that conducts with the core wire of the high-voltage wire at the other end, is inserted into the center hole 11 of the insulating tube 1, and the discharge part 22 is pushed forward. Protrude and sit,
The annular gap formed by the connecting portion 23 at the other end of the electrode shaft and the large-diameter portion 13 of the center hole of the insulating tube formed around the connecting portion is filled with the unevenness of the connecting portion 23 of the electrode shaft. The bottom seat surface 13a of the annular gap
The electrode shaft 2 is attached to the insulator 1 by press-fitting the elastic seat plate 3, which is pressed and locked into the insulator 1, so that its cross section has an inverted V-shape.
A spark discharge member for combustion equipment that is fixed to a
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7232584U JPS60185860U (en) | 1984-05-17 | 1984-05-17 | spark discharge parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7232584U JPS60185860U (en) | 1984-05-17 | 1984-05-17 | spark discharge parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60185860U JPS60185860U (en) | 1985-12-09 |
| JPH0133980Y2 true JPH0133980Y2 (en) | 1989-10-16 |
Family
ID=30610636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7232584U Granted JPS60185860U (en) | 1984-05-17 | 1984-05-17 | spark discharge parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185860U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4712858U (en) * | 1971-03-11 | 1972-10-16 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57199756U (en) * | 1981-06-10 | 1982-12-18 |
-
1984
- 1984-05-17 JP JP7232584U patent/JPS60185860U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4712858U (en) * | 1971-03-11 | 1972-10-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60185860U (en) | 1985-12-09 |
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