JPH0619853U - Electrostatic spray gun - Google Patents
Electrostatic spray gunInfo
- Publication number
- JPH0619853U JPH0619853U JP3046392U JP3046392U JPH0619853U JP H0619853 U JPH0619853 U JP H0619853U JP 3046392 U JP3046392 U JP 3046392U JP 3046392 U JP3046392 U JP 3046392U JP H0619853 U JPH0619853 U JP H0619853U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- resistor
- paint
- electrode
- electrostatic spray
- 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.)
- Pending
Links
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
(57)【要約】
【目的】 電極に高電圧を印加する通電経路の、抵抗
体、圧縮コイルばね及び埋金の間で錆により接触不良が
起きるのを防止する。
【構成】 抵抗体１３の先端に嵌着された導電材料から
なるキヤツプ２０と、圧縮コイルばね１７と、埋金１１
の表面に、夫々、金めつき層２１が形成されている。
(57) [Abstract] [Purpose] To prevent contact failure due to rust between the resistor, the compression coil spring and the embedded metal in the energization path for applying a high voltage to the electrode. [Structure] A cap 20 made of a conductive material, fitted to the tip of a resistor 13, a compression coil spring 17, and a padding 11.
A gold plating layer 21 is formed on each of the surfaces.
Description
【０００１】[0001]
本考案は、塗料帯電用の電極に高電圧を印加する通電経路の途中で接触不良が 生ずるのを防止するための対策を講じた静電スプレイガンに関する。 The present invention relates to an electrostatic spray gun that has taken measures to prevent contact failure in the course of a current-carrying path for applying a high voltage to a paint charging electrode.
【０００２】[0002]
従来の静電スプレイガンの一例を、本考案の一実施例を示す図１を参照して説 明する。 符号１は、ガン本体に突設された合成樹脂製のエクステンシヨン部であつて、 その先端に図示しない塗料噴出用のノズルを取り付けるハウジング２が設けられ 、そのハウジング２内に、塗料供給路３に連通した塗料室４が形成されて、その 前面に、上記したノズルに連通した弁口７を有する弁シートを兼ねた電極６が嵌 着されている。 An example of a conventional electrostatic spray gun will be described with reference to FIG. 1 showing an embodiment of the present invention. Reference numeral 1 is an extension portion made of synthetic resin protruding from the gun body, and a housing 2 for attaching a paint spray nozzle (not shown) is provided at the tip of the extension portion. A paint chamber 4 communicating with the above is formed, and an electrode 6 also serving as a valve seat having a valve opening 7 communicating with the above-mentioned nozzle is fitted on the front surface thereof.
【０００３】 ハウジング２の塗料供給路３と反対側の外周部にはハウジング２の先端付近に 達する収容孔９が穿設され、ハウジング２内に上記した電極６と接触した状態で 嵌着された埋金１１の先端が、収容孔９の先端に突出しているとともに、その収 容孔９内に、外周面が樹脂製のモールドチユーブ１４で被われて、後端が図示し ない高電圧発生装置から引き出された高圧ケーブル１５に接続された抵抗体１３ の先端が嵌入され、その抵抗体１３の先端面と埋金１１とが、その間に介装され た導電材料からなる圧縮コイルばね１７により電気接続され、それらを介して電 極６に高電圧が印加されるようになつている。A housing hole 9 reaching the vicinity of the tip of the housing 2 is formed in the outer peripheral portion of the housing 2 on the side opposite to the paint supply passage 3, and is fitted in the housing 2 in a state of being in contact with the electrode 6 described above. The tip of the embedded metal 11 projects from the tip of the housing hole 9, and the receiving hole 9 is covered with a resin-made mold tube 14 on the outer peripheral surface, so that the rear end of the high voltage generator is not shown. The tip of the resistor 13 connected to the high-voltage cable 15 drawn out from is inserted, and the tip surface of the resistor 13 and the embedded metal 11 are electrically connected by the compression coil spring 17 made of a conductive material interposed therebetween. They are connected, and a high voltage is applied to the electrode 6 via them.
【０００４】 そして、ニードル弁１８を開放することにより電極６の弁口７を通つて塗料が 流出し、その間に帯電されてノズルから噴出するようになつている。Then, by opening the needle valve 18, the coating material flows out through the valve opening 7 of the electrode 6, and during this period, the coating material is charged and ejected from the nozzle.
【０００５】[0005]
このような通電構造では、抵抗体１３、圧縮コイルばね１７及び埋金１１の間 の電気的接触部分が剥き出しとなつていて、接触部分の表面に酸化被膜ができる 、すなわち錆が出やすいのであるが、従来はその防錆対策が考慮されていなかつ た。 In such a current-carrying structure, the electrical contact portion between the resistor 13, the compression coil spring 17, and the embedded metal 11 is exposed, and an oxide film is formed on the surface of the contact portion, that is, rust is easily generated. However, the rust prevention measures have not been considered in the past.
【０００６】 接触部分に錆が出ると、特に電流値の低い高電圧電流であることから電流が流 れにくくなり、言わば接触不良が生じて、コロナ放電などのスパークが起きやす くなる。そうすると、紫外線やオゾンが発生して、エクステンシヨン部１の合成 樹脂を劣化させ、さらには電圧破壊を招くおそれがあつた。If rust appears on the contact part, the current is difficult to flow because it is a high voltage current with a particularly low current value, so to speak, contact failure occurs and sparks such as corona discharge are likely to occur. Then, ultraviolet rays and ozone are generated, which may deteriorate the synthetic resin of the extension part 1 and further lead to voltage breakdown.
【０００７】[0007]
本考案の静電スプレイガンは、叙上の点に鑑み案出されたものであつて、抵抗 体の先端、中間接触体及び埋金の表面に、金めつきを施した構成とした。 The electrostatic spray gun of the present invention has been devised in view of the above points, and has a structure in which the tip of the resistor, the intermediate contact body, and the surface of the embedded metal are plated with gold.
【０００８】[0008]
本考案では、錆の発生しやすかつた接触部分を構成する抵抗体の先端、中間接 触体及び埋金の表面に、夫々、導電性を有し、かつ、耐食性すなわち防錆性に優 れた金めつきを施したことによつて、それらの間に錆に伴う接触不良が生ずるの が確実に防止される。 According to the present invention, the tip of the resistor, the intermediate contactor, and the surface of the embedded metal, which form the contact portion where rust easily occurs, have conductivity and excellent corrosion resistance, that is, rust prevention. By applying the gold plating, it is possible to surely prevent a contact failure due to rust between them.
【０００９】 それによりスパークの発生が防止されて、エクステンシヨン部の劣化や電圧破 壊が起きにくくなり、エクステンシヨン部ひいてはスプレイガンの耐用寿命を大 幅に伸ばすことができる。また、スパークが発生しなければ抵抗体の温度上昇も 抑えられるから、抵抗体自身の耐用寿命も伸ばすことができる効果がある。As a result, the occurrence of sparks is prevented, deterioration of the extension portion and voltage breakdown are less likely to occur, and the useful life of the extension portion and thus of the spray gun can be greatly extended. Further, if the spark does not occur, the temperature rise of the resistor can be suppressed, so that the useful life of the resistor itself can be extended.
【００１０】[0010]
以下、本考案の一実施例を添付図面に基づいて説明する。 本実施例では、図２に詳細に示すように、埋金１１と、圧縮コイルばね１７と 、抵抗体１３の先端に嵌着された導電材料からなるキヤツプ２０の夫々の表面に 、金めつき層２１が形成されている。 An embodiment of the present invention will be described below with reference to the accompanying drawings. In the present embodiment, as shown in detail in FIG. 2, the metal plating 11, the compression coil spring 17, and the cap 20 made of a conductive material fitted to the tip of the resistor 13 are respectively plated with gold. The layer 21 is formed.
【００１１】 この金めつき層２１は、導電性を有し、かつ、耐食性すなわち防錆性に優れる ので、抵抗体１３のキヤツプ２０、圧縮コイルばね１７及び埋金１１の表面に錆 が出ることがなく、それらの間の接触不良が確実に回避されてスパークの発生が 防止される。Since the gold-plated layer 21 has conductivity and is excellent in corrosion resistance, that is, rust resistance, rust is generated on the surfaces of the cap 20 of the resistor 13, the compression coil spring 17, and the embedded metal 11. Therefore, the poor contact between them is reliably avoided and the occurrence of sparks is prevented.
【００１２】 なお、本考案は、抵抗体の先端面に装着した圧縮コイルばねの弾拡力でさらに 別の接触子を埋金に押し付けるもの等、抵抗体と埋金の間に中間接触体を介装し た通電構造を持つ静電スプレイガン全般に広く適用することができる。According to the present invention, an intermediate contact body is interposed between the resistor and the metal pad, such as one in which another contact is pressed against the metal by elastic expansion force of a compression coil spring mounted on the tip surface of the resistor. It can be widely applied to all electrostatic spray guns with an energized structure interposed.
【図１】本考案の一実施例の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】その部分拡大断面図である。FIG. 2 is a partially enlarged cross-sectional view thereof.
１：エクステンシヨン部 ２：ハウジング ３：塗料供
給路 ４：塗料室 ６：電極 ９：収容孔 １１：埋金
１３：抵抗体 １５：高圧ケーブル １７：圧縮コイ
ルばね ２０：キヤツプ ２１：金めつき層1: Extension Part 2: Housing 3: Paint Supply Channel 4: Paint Chamber 6: Electrode 9: Housing Hole 11: Gold 13: Resistor 15: High Voltage Cable 17: Compression Coil Spring 20: Cap 21: Gold Plated Layer
Claims (1)
部の塗料噴出用のノズルが取着される先端部に該ノズル
に塗料を供給する塗料供給路を形成して、該塗料供給路
に電極を介装するとともに、前記塗料供給路の側方に形
成した収容孔内に、後端を高電圧発生装置に接続した抵
抗体の先端を嵌入し、該抵抗体の先端を、前記電極に接
続されて前記収容孔の先端に臨んだ埋金に、導電性を有
する中間接触体を介して通電可能に接触させることによ
り、前記電極に高電圧を印加して噴出塗料に帯電させる
ようにした静電スプレイガンにおいて、前記抵抗体の先
端、前記中間接触体及び前記埋金の表面に、金めつきを
施したことを特徴とする静電スプレイガン。1. A paint supply passage for supplying paint to the nozzle is formed at a tip end portion of the extension portion made of a synthetic resin material, to which a paint ejection nozzle is attached, and an electrode is interposed in the paint supply passage. And a tip of a resistor whose rear end is connected to a high-voltage generator is fitted into a housing hole formed on the side of the paint supply path, and the tip of the resistor is connected to the electrode. An electrostatic spray in which a high voltage is applied to the electrode to charge the jetted paint by contacting the buried metal facing the tip of the housing hole so as to be able to conduct electricity through a conductive intermediate contact body. In the gun, an electrostatic spray gun characterized in that the tip of the resistor, the intermediate contact body, and the surface of the embedded metal are plated with gold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3046392U JPH0619853U (en) | 1992-04-08 | 1992-04-08 | Electrostatic spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3046392U JPH0619853U (en) | 1992-04-08 | 1992-04-08 | Electrostatic spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0619853U true JPH0619853U (en) | 1994-03-15 |
Family
ID=12304583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3046392U Pending JPH0619853U (en) | 1992-04-08 | 1992-04-08 | Electrostatic spray gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619853U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54118447A (en) * | 1978-02-13 | 1979-09-13 | Nordson Corp | Improved electrostatic jet gun |
| JPS61120730A (en) * | 1984-11-19 | 1986-06-07 | 加藤 忠雄 | Thermal welding perforation processing equipment for continuous transfer web |
-
1992
- 1992-04-08 JP JP3046392U patent/JPH0619853U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54118447A (en) * | 1978-02-13 | 1979-09-13 | Nordson Corp | Improved electrostatic jet gun |
| JPS61120730A (en) * | 1984-11-19 | 1986-06-07 | 加藤 忠雄 | Thermal welding perforation processing equipment for continuous transfer web |
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