JPH035009B2 - - Google Patents
Info
- Publication number
- JPH035009B2 JPH035009B2 JP19148086A JP19148086A JPH035009B2 JP H035009 B2 JPH035009 B2 JP H035009B2 JP 19148086 A JP19148086 A JP 19148086A JP 19148086 A JP19148086 A JP 19148086A JP H035009 B2 JPH035009 B2 JP H035009B2
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- contact
- oil
- grease
- movable contact
- 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
- 239000000314 lubricant Substances 0.000 claims description 29
- 239000004519 grease Substances 0.000 claims description 24
- 239000012212 insulator Substances 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 15
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 239000002199 base oil Substances 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 5
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 4
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- -1 acrylic ester Chemical class 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000010702 perfluoropolyether Substances 0.000 claims 1
- 230000006866 deterioration Effects 0.000 description 6
- 238000003763 carbonization Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Contacts (AREA)
Description
産業上の利用分野
本発明は摺動スイツチに関し、詳しくは、絶縁
体に固定接点を取り付けた固定子の摺動面上を可
動接点が摺動することにより可動接点と固定接点
とが接離してスイツチが開閉するもので、特に、
スイツチの開閉部で電気アークを発生する中〜大
電流が流れる摺動スイツチにおいて、これら可動
接点と固定接点の摺動面に塗布する潤滑剤を改良
して、接点の摩耗を低減し耐久性の向上を図るも
のである。
従来の技術
従来、この種の摺動スイツチでは、接点および
摺動部に塗布する潤滑グリスとしてシリコン油系
を用いると、アークで硬い生成物を作るため、炭
化水素系合成油を基油とするグリスが多く用いら
れている。
しかしながら、該炭化水素系合成油を基油とす
るグリスは、スイツチ開閉時にアークが発生する
接点のものの近くにも粘着するために、アーク熱
で炭化し、使用を重ねると該炭化が進むと共に、
接点、絶縁体の摺動による摩擦粉も混入して高粘
着性のグリスとなつて接点に粘着する。この導電
粉を含んだグリスの間で接点開離が行われると、
導体電極が散在していることとなるため、電気接
点がかなり離れても電気アークが消滅せず、アー
ク継続時間が長くなつてアーク熱が発生する。そ
のため、これらの熱により接点の酸化、絶縁体の
炭化も誘発され、油切れによる接点の摩擦も増す
等、諸原因が重なつて摺動スイツチの寿命が短く
なる問題があつた。
発明の目的
本発明は上記した問題を解消せんとするもので
あり、アーク発生部へのグリスの粘着を抑えるこ
とにより、スイツチの使用を重ねることで生じる
アーク継続時間の増加および該増加により生じる
油切れ等による摺動スイツチの劣化を防ぎ、よつ
て耐久性能の向上を図るものである。
発明の構成
本発明は上記した目的を達成するために、絶縁
体および固定接点からなる固定子の摺動面上を可
動接点が摺動して、可動接点と固定接点を接離す
る摺動スイツチにおいて、
上記固定子の摺動面と可動接点の摺動面に、相
互に混り合わない別種の潤滑油あるいは潤滑グリ
スを塗布したことを特徴とするものであり、
上記可動接点に塗布する潤滑剤としては、揆水
揆油性で且つ高温で炭化し難い特殊フツ素を基油
としたグリスを用いる一方、固定接点など固定子
側に塗布する潤滑剤として、炭化水素合成油また
は鉱油を基油とするグリスを用いることを特徴と
し、特に、スイツチ開閉時に中〜大電流が流れる
摺動スイツチにおいて、接点グリスのアーク劣化
を防ぎ、該劣化により誘発される故障原因を除去
して耐久性能を向上したものである。
実施例
以下、本発明を図面に示す実施例により詳述す
る。
第１図に示す摺動スイツチでは、絶縁体１に一
対の固定接点２を埋設し、その円弧状の接点面２
ａを絶縁体１の上面より突出させ、これら接点面
２ａに潤滑剤Ａを塗布している。一方、上記絶縁
体１および固定接点２からなる固定子３上に、可
動接点４をスプリング５により付勢して摺動自在
に配置している。該可動接点４には上記潤滑剤Ａ
とは別種の潤滑剤Ｂを塗布し、該可動接点４の平
板状の接点面４ａが固定接点２の接点面２ａと接
離してスイツチを開閉するようにしている。尚、
図中、R1＜R2である。
第２図に示す摺動スイツチでは、固定接点２の
接点面２ａを絶縁体１の正面１ａと同一平面に設
定し、該固定子３の摺動面、即ち、接点面２ａと
絶縁体１の上面１ａに上記潤滑剤Ａを塗布してい
る。尚、接点面２ａと絶縁体１の間にはエアギヤ
ツプ６を設けている。一方、上記潤滑剤Ｂを塗布
する可動接点４には、下部両側に一対の突出した
接点部４ｂを形成し、該接点部４ｂの下端接点面
４ａが固定子３の摺動面を摺動してスイツチを開
閉するようにしている。また、図中、R1＜R2で
ある。
上記した第１図および第２図に示す摺動スイツ
チにおいては、固定子３側に塗布する潤滑剤Ａと
可動接点４側に塗布する潤滑剤Ｂとして、相互に
混り合わない別種のグリスを用いている。即ち、
可動接点４側では、摺動しながらアークを発生し
て広い範囲にわたつてアーク熱の直射を受けるた
め、塗布する潤滑剤Ｂとして、揆水性および揆油
性を有し、かつ、アークなどの高温で炭化し難い
特殊フツ素油であるペルフルオロアルキル基を含
むポリエーテル油を基油とし、ペルフルオロアル
キル基を含む低分子ポリマーの微粉末及び又は変
性低分子量テトラフルオロエチレンワツクスを増
稠剤とするグリスを用いている。一方、固定子３
側の固定接点２（第２図の実施例では絶縁体１も
含む）に塗布する潤滑剤Ａとして、炭化水素合成
油又は鉱油を基油とするグリスを用いている。
上記した構成からなる摺動スイツチにおいて
は、互いに摺動する固定接点２と可動接点４に塗
布する潤滑剤を別種のグリスとし、即ち、潤滑剤
Ａは油系、潤滑剤Ｂは揆油系としているため、互
いに混じり合わない。よつて、摺動時の摩擦抵抗
が少なくなり、摺動耐久性が優れたものとなると
共に、接点の耐摩耗性も向上する。
さらに、広い範囲でアーク熱の直射を受ける可
動接点４には揆水揆油系の潤滑剤Ｂを塗布して油
系の潤滑剤Ａが粘着し難くしているため、粘着グ
リスのアーク熱による炭化がなく、よつて、アー
ク継続時間の増大、アークエネルギーの増加によ
る粘着グリスの劣化が防止でき、接点２，４や絶
縁体１の劣化を防いで長寿命化が図れる。
上記した潤滑剤Ａ，Ｂの塗布による作用効果は
上記の実験で実証された。
実験例
まず、試料の調整および実験方法を下記のよう
に設定した。
摺動スイツチの接点グリスに関連する劣化は、
アーク熱で絶縁体が加熱して絶縁体の摩擦粉が出
来やすい上記第２図に示す摺動スイツチで発生し
やすく、かつ、接点開離時のアークエネルギーを
大きくした方が加速度的に起こりやすい。
上記した点を考慮して、第３図に示す摺動スイ
ツチの耐久性評価装置を設けた。図中、１は絶縁
体、２は固定接点、４Ａ，４Ｂは可動接点で、可
動接点４Ａは矢印方向へ往復移動させて固定接点
２と開離する一方、可動接点４Ｂは固定して固定
接点２と接触状態を保持させている。上記可動接
点４Ａと４Ｂには、25V、120Wのランプ１０を
接続し、可動接点４Ａを速度１cm／secで移動し
てスイツチを開閉し、これを繰り返すことにより
耐久性能を測定するようにした。
上記固定接点２および絶縁体１の上面に塗布す
る潤滑剤、可動接点４Ａ，４Ｂに塗布する潤滑
剤、および絶縁体１の素材を次頁の表に示すよう
に変えて、本発明の実施例１、実施例２と従来例
１、従来例２の試料を作成した。
INDUSTRIAL APPLICATION FIELD The present invention relates to a sliding switch, and more specifically, the movable contact slides on the sliding surface of a stator in which the fixed contact is attached to an insulator, thereby causing the movable contact and the fixed contact to come into contact with and separate from each other. A switch that opens and closes, especially
In sliding switches through which medium to large currents flow that generate electric arcs at the switch opening/closing parts, the lubricant applied to the sliding surfaces of these movable and fixed contacts has been improved to reduce contact wear and improve durability. This is intended to improve the quality of life. Conventional technology Conventionally, in this type of sliding switch, when a silicone oil-based lubricating grease is applied to the contacts and sliding parts, a hard product is created by the arc, so hydrocarbon-based synthetic oil is used as the base oil. Grease is often used. However, grease based on hydrocarbon-based synthetic oils also sticks near the contacts where arcs are generated when switches are opened and closed, so they carbonize due to arc heat, and as they are used repeatedly, the carbonization progresses.
Friction powder from the sliding of the contacts and insulators also mixes in and becomes highly sticky grease that sticks to the contacts. When the contact is opened between the grease containing this conductive powder,
Since the conductor electrodes are scattered, the electric arc will not be extinguished even if the electrical contacts are far apart, and the arc duration will become longer and arc heat will be generated. As a result, the heat causes oxidation of the contacts, carbonization of the insulator, and increases friction of the contacts due to lack of oil, all of which lead to a shortened lifespan of the slide switch. Purpose of the Invention The present invention aims to solve the above-mentioned problems, and by suppressing the adhesion of grease to the arc generating part, the increase in arc duration that occurs due to repeated use of the switch and the oil that is generated due to this increase are avoided. This prevents deterioration of the sliding switch due to breakage, etc., and thereby improves durability. Composition of the Invention In order to achieve the above-mentioned object, the present invention provides a sliding switch in which a movable contact slides on a sliding surface of a stator consisting of an insulator and a fixed contact to connect and separate the movable contact and the fixed contact. The sliding surface of the stator and the sliding surface of the movable contact are coated with different types of lubricating oil or lubricating grease that do not mix with each other, and the lubricant applied to the movable contact is As a lubricant, we use a special fluorine-based grease that has water-repelling properties and is difficult to carbonize at high temperatures.As a lubricant to be applied to the stator side such as fixed contacts, we use hydrocarbon synthetic oil or mineral oil as a base oil. It is characterized by the use of grease that prevents arc deterioration of contact grease and improves durability by eliminating causes of failure caused by such deterioration, especially in sliding switches where medium to large current flows when the switch is opened and closed. This is what I did. EXAMPLES Hereinafter, the present invention will be explained in detail with reference to examples shown in the drawings. In the sliding switch shown in FIG. 1, a pair of fixed contacts 2 are embedded in an insulator 1, and the arc-shaped contact surfaces 2
A is made to protrude from the upper surface of the insulator 1, and a lubricant A is applied to these contact surfaces 2a. On the other hand, a movable contact 4 is biased by a spring 5 and is slidably disposed on a stator 3 consisting of the insulator 1 and fixed contact 2. The above-mentioned lubricant A is applied to the movable contact 4.
A different type of lubricant B is applied to the movable contact 4 so that the flat contact surface 4a of the movable contact 4 comes into contact with and separates from the contact surface 2a of the fixed contact 2 to open and close the switch. still,
In the figure, R 1 <R 2 . In the sliding switch shown in FIG. 2, the contact surface 2a of the fixed contact 2 is set on the same plane as the front surface 1a of the insulator 1, and the sliding surface of the stator 3, that is, the contact surface 2a and the insulator 1 The above lubricant A is applied to the upper surface 1a. Note that an air gap 6 is provided between the contact surface 2a and the insulator 1. On the other hand, the movable contact 4 to which the lubricant B is applied has a pair of protruding contact parts 4b on both sides of the lower part, and the lower end contact surface 4a of the contact part 4b slides on the sliding surface of the stator 3. The switch is opened and closed using the switch. Furthermore, in the figure, R 1 <R 2 . In the sliding switch shown in FIGS. 1 and 2 described above, different types of greases that do not mix with each other are used as lubricant A applied to the stator 3 side and lubricant B applied to the movable contact 4 side. I am using it. That is,
On the movable contact 4 side, an arc is generated while sliding and the arc heat is directly irradiated over a wide range, so the lubricant B to be applied has water-repellent and oil-repellent properties and is suitable for high-temperature materials such as arcs. Grease whose base oil is polyether oil containing perfluoroalkyl groups, which is a special fluorinated oil that is difficult to carbonize, and whose thickener is fine powder of a low-molecular polymer containing perfluoroalkyl groups and/or modified low-molecular-weight tetrafluoroethylene wax. is used. On the other hand, stator 3
As the lubricant A applied to the side fixed contacts 2 (including the insulator 1 in the embodiment shown in FIG. 2), a grease based on hydrocarbon synthetic oil or mineral oil is used. In the sliding switch constructed as described above, the lubricants applied to the fixed contact 2 and the movable contact 4 that slide against each other are different types of grease, that is, lubricant A is oil-based and lubricant B is oleum-based. Therefore, they do not mix with each other. Therefore, the frictional resistance during sliding is reduced, the sliding durability is excellent, and the wear resistance of the contacts is also improved. Furthermore, the movable contact 4, which is directly exposed to arc heat over a wide range, is coated with water-based lubricant B to make it difficult for oil-based lubricant A to stick. There is no carbonization, so deterioration of the adhesive grease due to an increase in arc duration and arc energy can be prevented, and deterioration of the contacts 2 and 4 and the insulator 1 can be prevented, resulting in a longer service life. The effects of applying the above-mentioned lubricants A and B were demonstrated in the above-mentioned experiment. Experimental Example First, sample preparation and experimental methods were set as follows. Deterioration related to sliding switch contact grease is
This is more likely to occur in the sliding switch shown in Figure 2 above, where the insulator is heated by the arc heat and friction particles are formed on the insulator, and it is more likely to occur at an accelerated rate if the arc energy is increased when the contact opens. . In consideration of the above points, a sliding switch durability evaluation device shown in FIG. 3 was provided. In the figure, 1 is an insulator, 2 is a fixed contact, and 4A and 4B are movable contacts.The movable contact 4A is moved back and forth in the direction of the arrow to separate from the fixed contact 2, while the movable contact 4B is fixed and is a fixed contact. 2 is kept in contact. A 25V, 120W lamp 10 was connected to the movable contacts 4A and 4B, and the movable contact 4A was moved at a speed of 1 cm/sec to open and close the switch, and this was repeated to measure durability. The lubricant applied to the fixed contact 2 and the upper surface of the insulator 1, the lubricant applied to the movable contacts 4A and 4B, and the material of the insulator 1 were changed as shown in the table on the next page, and an embodiment of the present invention was carried out. 1. Samples of Example 2, Conventional Example 1, and Conventional Example 2 were prepared.
【表】
上記した試料毎に耐久試験を行い、固定接点は
50000回、可動接点は200000回それぞれ行い、接
点の摩耗および絶縁体の炭化、粘着物の付着状況
を比較した。
その結果は前記表に示す通りであり、従来例
１、２の可動接点側と固定接点側に同じ油系の潤
滑グリスを塗布した場合は、第４図に示すよう
に、潤滑グリスが可動接点４Ａ，４Ｂ、（特に、
４Ａ）に粘着し、可動接点４Ａがかなり離れても
アークが継続して発生した。これに対して、本発
明の実施例１および２では炭化グリスの粘着が少
なく、よつて、可動接点および固定接点は共に従
来例より摩耗が少ない。
発明の効果
以上の説明より明らかなように、本発明に係わ
る摺動スイツチによれば、固定接点側に塗布する
潤滑剤と可動接点側に塗布する潤滑剤は、油系と
揆油系として互いに混じ合わない別種のものを用
いているため、従来の一種の油系グリスを用いた
場合と比較して、耐摩耗性が優れると共に、開閉
アークによるグリスの耐炭化性に優れ、よつて、
耐久性が向上する利点を有するものである。[Table] Durability tests were conducted on each of the above samples, and the fixed contacts were
The tests were repeated 50,000 times and 200,000 times for the movable contacts, and the wear of the contacts, carbonization of the insulators, and adhesion of sticky substances were compared. The results are as shown in the table above. When the same oil-based lubricating grease was applied to the movable contact side and the fixed contact side in Conventional Examples 1 and 2, as shown in Figure 4, the lubricating grease was applied to the movable contact side. 4A, 4B, (especially,
4A), and an arc continued to occur even if the movable contact 4A was far away. On the other hand, in Examples 1 and 2 of the present invention, the adhesion of the carbonized grease is low, and therefore both the movable contact and the fixed contact have less wear than the conventional example. Effects of the Invention As is clear from the above explanation, according to the sliding switch according to the present invention, the lubricant applied to the fixed contact side and the lubricant applied to the movable contact side are mutually related to each other as oil-based and lubricant-based. Because it uses a different type of grease that does not mix, it has superior wear resistance compared to conventional oil-based greases, and also has excellent resistance to carbonization of the grease due to opening and closing arcs.
This has the advantage of improved durability.
第１図は本発明に係わる摺動スイツチの実施例
を示す断面図、第２図は他の実施例を示す断面
図、第３図は実験装置を示す断面図、第４図は従
来例の欠点を示す断面図である。
１……絶縁体、２……固定接点、３……固定
子、４……可動接点、Ａ……固定接点側の潤滑
剤、Ｂ……可動接点側の潤滑剤。
Fig. 1 is a sectional view showing an embodiment of a sliding switch according to the present invention, Fig. 2 is a sectional view showing another embodiment, Fig. 3 is a sectional view showing an experimental device, and Fig. 4 is a sectional view of a conventional example. It is a sectional view showing a defect. 1...Insulator, 2...Fixed contact, 3...Stator, 4...Movable contact, A...Lubricant on the fixed contact side, B...Lubricant on the movable contact side.
Claims (1)
面上を可動接点が摺動して、可動接点と固定接点
を接離する摺動スイツチにおいて、 上記固定子の摺動面と可動接点の摺動面に、相
互に混り合わない別種の潤滑油あるいは潤滑グリ
スを塗布したことを特徴とする摺動スイツチ。 ２ 特許請求の範囲１記載の可動接点に塗布する
潤滑剤として、揆水揆油性で且つ高温で炭化し難
い特殊フツ素を基油としたグリスを用いる一方、
固定接点など固定子側に塗布する潤滑剤として、
炭化水素合成油または鉱油を基油とするグリスを
用いることを特徴とする摺動スイツチ。 ３ 特許請求の範囲２記載の可動接点に塗布する
潤滑剤は、ペルフルオロアルキル基を含むペルフ
ルオロポリエーテルを基油とし、ペルフルオロア
ルキル基を含む種々のポリエーテルのアクリル酸
エステルのポリマー及び又は変性低分子量テトラ
フルオロエチレンワツクスを増稠剤とする揆水揆
油性グリスからなることを特徴とする摺動スイツ
チ。[Scope of Claims] 1. A sliding switch in which a movable contact slides on a sliding surface of a stator consisting of an insulator and a fixed contact to connect and separate the movable contact and the fixed contact, wherein the sliding of the stator A sliding switch characterized by having a different type of lubricating oil or lubricating grease that does not mix with each other applied to the sliding surface of the movable contact. 2. As the lubricant applied to the movable contacts according to claim 1, a grease based on a special fluorine base oil that is water-repellent and difficult to carbonize at high temperatures is used,
As a lubricant to be applied to the stator side such as fixed contacts,
A sliding switch characterized by using grease based on hydrocarbon synthetic oil or mineral oil. 3. The lubricant applied to the movable contact according to claim 2 uses a perfluoropolyether containing a perfluoroalkyl group as a base oil, and a polymer and/or modified low molecular weight acrylic ester of various polyethers containing a perfluoroalkyl group. A sliding switch characterized by being made of water-based oil-based grease with tetrafluoroethylene wax as a thickener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19148086A JPS6348712A (en) | 1986-08-14 | 1986-08-14 | Slide switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19148086A JPS6348712A (en) | 1986-08-14 | 1986-08-14 | Slide switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6348712A JPS6348712A (en) | 1988-03-01 |
| JPH035009B2 true JPH035009B2 (en) | 1991-01-24 |
Family
ID=16275345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19148086A Granted JPS6348712A (en) | 1986-08-14 | 1986-08-14 | Slide switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6348712A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5023855B2 (en) * | 2006-08-29 | 2012-09-12 | パナソニック株式会社 | Vehicle switch |
-
1986
- 1986-08-14 JP JP19148086A patent/JPS6348712A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6348712A (en) | 1988-03-01 |
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