JP4858164B2 - Electric transmission mechanism and residual chlorine meter using the same - Google Patents
Electric transmission mechanism and residual chlorine meter using the same Download PDFInfo
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- JP4858164B2 JP4858164B2 JP2006353774A JP2006353774A JP4858164B2 JP 4858164 B2 JP4858164 B2 JP 4858164B2 JP 2006353774 A JP2006353774 A JP 2006353774A JP 2006353774 A JP2006353774 A JP 2006353774A JP 4858164 B2 JP4858164 B2 JP 4858164B2
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims description 33
- 229910052801 chlorine Inorganic materials 0.000 title claims description 33
- 239000000460 chlorine Substances 0.000 title claims description 33
- 230000005540 biological transmission Effects 0.000 title claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 77
- 239000002184 metal Substances 0.000 claims description 77
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910000971 Silver steel Inorganic materials 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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Description
本発明は、回転体と静止体との間で電力または電気信号の伝達を行う電気伝達機構およびこれを利用して回転する指示極から電流を取り出すようにした残留塩素の測定を行う残留塩素計に関するものである。 The present invention relates to an electric transmission mechanism that transmits electric power or an electric signal between a rotating body and a stationary body, and a residual chlorine meter that measures residual chlorine so that current is taken out from an indicator electrode that rotates using the electric transmission mechanism. It is about.
図６は従来の残留塩素計の一例を示す図であり、ポーラログラフ方式を利用して水中の残留塩素を測定するものである。サンプル水５中に指示極１と比較極２を入れ、これらの電極間に直流電圧を加えると、指示極１表面において被電解質（塩素）の電解還元反応が生じ、指示極１と比較極２間に電流が流れる。 FIG. 6 is a diagram showing an example of a conventional residual chlorine meter, which measures residual chlorine in water using a polarographic method. When the indicator electrode 1 and the comparison electrode 2 are placed in the sample water 5 and a DC voltage is applied between these electrodes, an electrolytic reduction reaction of the electrolyte (chlorine) occurs on the surface of the indicator electrode 1, and the indicator electrode 1 and the comparison electrode 2. Current flows between them.
電極間に電圧が印加されると、指示極１の近傍には濃度分極を生じた一定の拡散層が形成される。この状態では電解還元電流は拡散速度に比例する。拡散速度はサンプル水５中の残留塩素濃度に比例する。したがって、このときの電流（拡散電流Ｉｄ）を測定することでサンプル水５中の残留塩素を測定することができる。 When a voltage is applied between the electrodes, a certain diffusion layer having concentration polarization is formed in the vicinity of the indicator electrode 1. In this state, the electrolytic reduction current is proportional to the diffusion rate. The diffusion rate is proportional to the residual chlorine concentration in the sample water 5. Therefore, residual chlorine in the sample water 5 can be measured by measuring the current (diffusion current Id) at this time.
このような塩素濃度測定においては、塩素濃度と拡散電流の比例性を安定的に得るために拡散層の厚さを一定に保つことが重要である。そのため、拡散層の厚さを一定に保つために、指示極１をモータ３によって一定速度で常時回転させる。
指示極１は常時回転しているため、拡散電流Ｉｄを検出するためには回転体から電流を取り出すことができる電気伝達機構４が必要となる。
In such chlorine concentration measurement, it is important to keep the thickness of the diffusion layer constant in order to stably obtain the proportionality between the chlorine concentration and the diffusion current. Therefore, the indicator electrode 1 is always rotated at a constant speed by the motor 3 in order to keep the thickness of the diffusion layer constant.
Since the indicator electrode 1 is always rotating, the electric transmission mechanism 4 that can extract the current from the rotating body is required to detect the diffusion current Id.
図７は従来の電気伝達機構４の一例を示す図である。４１は指示極１と電気的に導通しこの指示極１とともに回転する円形のスリップリングである。スリップリング４１の近傍には、スリップリング４１の外周面に接触するブラシ４２およびこのブラシ４２を支持する支持部４３が非回転状態で設置されている。ブラシ４２をスリップリング４１に接触させることにより電気的に導通常体となり、回転しているスリップリング４１と静止しているブラシ４２の間で電流を伝達することができる。 FIG. 7 is a view showing an example of a conventional electric transmission mechanism 4. A circular slip ring 41 is electrically connected to the indicator electrode 1 and rotates together with the indicator electrode 1. In the vicinity of the slip ring 41, a brush 42 that contacts the outer peripheral surface of the slip ring 41 and a support portion 43 that supports the brush 42 are installed in a non-rotating state. By bringing the brush 42 into contact with the slip ring 41, an electrically conducting body is obtained, and current can be transmitted between the rotating slip ring 41 and the stationary brush 42.
しかしながら、残留塩素計は製品の性質上連続運転がなされることが多く、電気伝達機構４として上記のような構造を採用すると、スリップリング４１とブラシ４２が磨耗したり、ブラシ４２に曲がりが発生したりする場合がある。このような異常が認められた場合には、スリップリング４１やブラシ４２を交換する必要がある。 However, the residual chlorine meter is often operated continuously due to the nature of the product, and when the above-described structure is adopted as the electric transmission mechanism 4, the slip ring 41 and the brush 42 are worn or the brush 42 is bent. There is a case to do. When such an abnormality is recognized, it is necessary to replace the slip ring 41 and the brush 42.
しかし、スリップリング４１とブラシ４２の位置調整は難しく、スリップリング４１とブラシ４２の当たり方が強いと磨耗が発生しやすくなってしまう。一方、スリップリング４１とブラシ４２の当たり方が弱いと、ブラシ４２とスリップリング４１が非接触となる場合があり、問題である。そのため、製品組み立て時や部品の交換時において、スリップリング４１とブラシ４２の位置調整に時間がかかってしまう。 However, it is difficult to adjust the position of the slip ring 41 and the brush 42, and wear is likely to occur if the slip ring 41 and the brush 42 are strongly contacted. On the other hand, if the contact between the slip ring 41 and the brush 42 is weak, the brush 42 and the slip ring 41 may not be in contact with each other, which is a problem. Therefore, it takes time to adjust the positions of the slip ring 41 and the brush 42 when assembling the product or replacing parts.
本発明は、上記のような従来装置の欠点をなくし、非接触の状態となる恐れなく回転体と静止体との間で電力または電気信号の伝達を行うとともに、安価で難しい調整作業が不要な電気伝達機構およびこれを利用した残留塩素計を実現することを目的としたものである。 The present invention eliminates the disadvantages of the conventional apparatus as described above, transmits electric power or an electric signal between the rotating body and the stationary body without fear of non-contact, and does not require an inexpensive and difficult adjustment operation. The purpose is to realize an electric transmission mechanism and a residual chlorine meter using this mechanism.
上記のような目的を達成するために、本発明の請求項１では、回転体と静止体との間で電力または電気信号の伝達を行う電気伝達機構において、
回転軸を中心として回転可能に支持された回転体と、
この回転体の回転軸方向の端部に形成され、導電性のある金属球を内部に収納した収納部と、
複数の電極棒で構成され、前記収納部の金属球と接触するように前記収納部に挿入された接触子とを有し、
前記収納部の金属球を介して前記回転体と前記接触子との間で電力または電気信号の伝達を行うようにしたことを特徴とする。
In order to achieve the above object, in claim 1 of the present invention, in an electric transmission mechanism that transmits electric power or an electric signal between a rotating body and a stationary body,
A rotating body supported rotatably about a rotation axis;
A storage part that is formed at an end of the rotating body in the rotation axis direction and stores a conductive metal ball inside,
It is composed of a plurality of electrode rods, and has a contactor inserted into the storage unit so as to contact the metal ball of the storage unit,
Electric power or an electric signal is transmitted between the rotating body and the contact through the metal sphere of the storage portion.
請求項２では、請求項１に記載の電気伝達機構において、前記収納部の金属球は導電性のある潤滑剤が塗布されたことを特徴とする。 According to a second aspect of the present invention, in the electric transmission mechanism according to the first aspect, a conductive lubricant is applied to the metal sphere of the storage portion.
請求項３では、請求項１または２に記載の電気伝達機構において、前記金属球および前記回転体、前記接触子の少なくともいずれか１つは、チタン、プラチナ、金、銀、ステンレスなど腐食しにくい金属で形成されたことを特徴とする。 According to claim 3, in the electric transmission mechanism according to claim 1 or 2, at least one of the metal ball, the rotating body, and the contact is not easily corroded such as titanium, platinum, gold, silver, and stainless steel. It is characterized by being made of metal.
請求項４では、指示極と比較極とをサンプル水中に浸漬するとともにこの指示極をサンプル水中で回転させ、これらの電極間に電圧を印加し、電極間に流れる電流に基づきサンプル水中の塩素濃度を測定する残留塩素計において、
前記指示極の回転軸方向の端部に形成され、導電性のある金属球を内部に収納した収納部と、
複数の電極棒で構成され、前記収納部の金属球と接触するように前記収納部に挿入された接触子とを有し、
前記指示極と前記比較極間に流れる電流を前記収納部の金属球を介して前記指示極から前記接触子へ伝達するようにしたことを特徴とする。
In claim 4, the indicator electrode and the comparison electrode are immersed in the sample water, the indicator electrode is rotated in the sample water, a voltage is applied between these electrodes, and the chlorine concentration in the sample water is determined based on the current flowing between the electrodes. In the residual chlorine meter that measures
A storage part that is formed at an end of the indicator electrode in the rotation axis direction and stores a conductive metal sphere inside;
It is composed of a plurality of electrode rods, and has a contactor inserted into the storage unit so as to contact the metal ball of the storage unit,
A current flowing between the indicator electrode and the comparison electrode is transmitted from the indicator electrode to the contact via a metal sphere of the storage portion.
請求項５では、請求項４に記載の残留塩素計において、前記収納部の金属球は導電性のある潤滑剤が塗布されたことを特徴とする。 According to a fifth aspect of the present invention, in the residual chlorine meter according to the fourth aspect of the present invention, a conductive lubricant is applied to the metal sphere of the storage portion.
請求項６では、請求項４または５に記載の残留塩素計において、前記金属球および前記回転電極、前記接触子の少なくともいずれか１つは、チタン、プラチナ、金、銀、ステンレスなど腐食しにくい金属で形成されたことを特徴とする。 In claim 6, in the residual chlorine meter according to claim 4 or 5, at least one of the metal ball, the rotating electrode, and the contact is not easily corroded, such as titanium, platinum, gold, silver, and stainless steel. It is characterized by being made of metal.
このように、収納部の金属球を介して回転体と静止状態の接触子との間で電力または電気信号の伝達を行うようにしたことにより、非接触の状態となる恐れなく回転体と静止体との間で電力または電気信号の伝達を行うとともに、安価で難しい調整作業が不要な電気伝達機構を実現することができる。
金属球を使用して電流を伝達する構造は、スリップリングとブラシの微妙な位置調整のような難しい調整作業が必要ない。収納部の中に電流を取り出す接触子を挿入するだけでよいため、簡単に取り付けることができる。
また、金属球が回転して金属球自身および回転体、接触子を研磨するため、酸化皮膜が除去されて導電性能が劣化しにくくなる。
また、接触子が複数の電極棒で構成されているため、接触子自体の表面積が大きくなり、接触抵抗を小さくすることができる。また、金属球が撹拌されやすくなり、金属球による研磨効果が高くなる。
As described above, power or an electrical signal is transmitted between the rotating body and the stationary contact through the metal ball of the storage unit, so that the rotating body and the stationary body can be stationary without fear of becoming a non-contact state. It is possible to realize an electric transmission mechanism that transmits electric power or an electric signal to and from the body and does not require an inexpensive and difficult adjustment work.
A structure that uses a metal sphere to transmit current does not require difficult adjustment work such as delicate adjustment of the slip ring and brush. Since it suffices to insert a contact for taking out current into the storage portion, it can be easily attached.
Further, since the metal sphere rotates to polish the metal sphere itself, the rotator, and the contact, the oxide film is removed and the conductive performance is hardly deteriorated.
Further, since the contact is composed of a plurality of electrode rods, the surface area of the contact itself increases, and the contact resistance can be reduced. Further, the metal sphere is easily stirred, and the polishing effect by the metal sphere is increased.
請求項２では、金属球は導電性のある潤滑剤が塗布されているため、金属球の潤滑と酸化皮膜の防止に効果的である。 According to the second aspect, since the metal sphere is coated with a conductive lubricant, the metal sphere is effective for lubrication of the metal sphere and prevention of an oxide film.
請求項３では、金属球および回転体、接触子の素材としてチタン、プラチナ、金、銀、ステンレスなど腐食しにくい金属が用いられるため、導電性能が劣化しにくい。 According to the third aspect of the present invention, the metal ball, the rotating body, and the contact material are made of a metal that is not easily corroded, such as titanium, platinum, gold, silver, and stainless steel.
請求項４では、指示極と比較極間に流れる電流を収納部の金属球を介して指示極から接触子へ伝達するようにしたことにより、非接触の状態となる恐れなく、回転している指示極と静止している接触子との間で電流の伝達を行うとともに、安価で難しい調整作業が不要な残留塩素計を実現することができる。
金属球を使用して電流を伝達する構造は、スリップリングとブラシの微妙な位置調整のような難しい調整作業が必要ない。収納部の中に電流を取り出す接触子を挿入するだけでよいため、簡単に取り付けることができる。
また、金属球が回転して金属球自身および回転体、接触子を研磨するため、酸化皮膜が除去されて導電性能が劣化しにくくなる。
また、接触子が複数の電極棒で構成されているため、接触子自体の表面積が大きくなり、接触抵抗を小さくすることができる。また、金属球が撹拌されやすくなり、金属球による研磨効果が高くなる。
According to the fourth aspect of the present invention, the current flowing between the indicator electrode and the comparison electrode is transmitted from the indicator electrode to the contact through the metal ball of the housing portion, so that it rotates without fear of becoming a non-contact state. It is possible to realize a residual chlorine meter that transmits current between the indicator electrode and the stationary contact and that is inexpensive and does not require difficult adjustment work.
A structure that uses a metal sphere to transmit current does not require difficult adjustment work such as delicate adjustment of the slip ring and brush. Since it suffices to insert a contact for taking out current into the storage portion, it can be easily attached.
Further, since the metal sphere rotates to polish the metal sphere itself, the rotator, and the contact, the oxide film is removed and the conductive performance is hardly deteriorated.
Further, since the contact is composed of a plurality of electrode rods, the surface area of the contact itself increases, and the contact resistance can be reduced. Further, the metal sphere is easily stirred, and the polishing effect by the metal sphere is increased.
請求項５では、金属球は導電性のある潤滑剤が塗布されているため、金属球の潤滑と酸化皮膜の防止に効果的である。 According to the fifth aspect of the present invention, since the metal sphere is coated with a conductive lubricant, the metal sphere is effective for lubrication of the metal sphere and prevention of an oxide film.
請求項６では、金属球および指示極、接触子の素材としてチタン、プラチナ、金、銀、ステンレスなど腐食しにくい金属が用いられるため、導電性能が劣化しにくい。 According to the sixth aspect of the present invention, the metal ball, the indicator electrode, and the contact material are made of a metal that hardly corrodes, such as titanium, platinum, gold, silver, and stainless steel.
以下、図面を用いて本発明の電気伝達機構および残留塩素計を説明する。 Hereinafter, an electric transmission mechanism and a residual chlorine meter according to the present invention will be described with reference to the drawings.
（実施例１）
図１は本発明の電気伝達機構およびこれを利用した残留塩素計の一実施例を示す図である。電気伝達機構６以外の構成は図６に示す従来の残留塩素計と同様である。
Example 1
FIG. 1 is a view showing an embodiment of an electric transmission mechanism of the present invention and a residual chlorine meter using the same. The configuration other than the electrical transmission mechanism 6 is the same as that of the conventional residual chlorine meter shown in FIG.
図２は電気伝達機構６と指示極１の拡大図である。指示極１はサンプル水５中の拡散層を一定にするために常時回転している（回転体）。６１はこの指示極１の回転軸方向の端部に指示極１の一部として形成された収納部であり、内部に導電性のある金属球６１ａが複数収納されている。必要に応じて、金属球６１ａの回転をスムーズにするために金属球６１ａに導電性グリースなどの潤滑剤６１ｂを塗布してもよい。６２は非回転状態に固定された接触子であり、金属球６１ａと接触するように収納部６１に挿入される。収納部６１は、金属球６１ａが外部に飛び出さないように、必要に応じて蓋体６３を設けてケーシングされる。 FIG. 2 is an enlarged view of the electric transmission mechanism 6 and the indicator electrode 1. The indicator electrode 1 is constantly rotating (rotating body) in order to make the diffusion layer in the sample water 5 constant. Reference numeral 61 denotes a storage portion formed as a part of the indicator electrode 1 at the end of the indicator electrode 1 in the rotation axis direction, and a plurality of conductive metal balls 61a are accommodated therein. If necessary, a lubricant 61b such as conductive grease may be applied to the metal sphere 61a in order to smoothly rotate the metal sphere 61a. Reference numeral 62 denotes a contact fixed in a non-rotating state, and is inserted into the storage portion 61 so as to come into contact with the metal ball 61a. The housing 61 is provided with a lid 63 as necessary so that the metal ball 61a does not jump out.
金属球６１ａは、チタンまたはチタン合金、プラチナまたはプラチナ合金、金または金合金、銀または銀合金、ステンレス鋼など腐食しにくい金属で形成されることが望ましい。また、指示極１および接触子６２も、全体あるいは金属球６１ａとの接触面が同様の材質で形成されることが望ましい。 The metal ball 61a is preferably formed of a metal that hardly corrodes, such as titanium or a titanium alloy, platinum or a platinum alloy, gold or a gold alloy, silver or a silver alloy, and stainless steel. In addition, the indicator electrode 1 and the contactor 62 are preferably formed of the same material as the whole or the contact surface with the metal ball 61a.
収納部６１の内側壁面は金属球６１ａと接触し、また金属球６１ａ同士も接触する。さらに金属球６１ａと接触子６２も互いに接触する。したがって、指示極１と接触子６２は、金属球６１ａを介して電気的に導通状態となる。 The inner wall surface of the storage unit 61 is in contact with the metal balls 61a, and the metal balls 61a are also in contact with each other. Furthermore, the metal ball 61a and the contact 62 also contact each other. Therefore, the indicator electrode 1 and the contactor 62 are electrically connected via the metal ball 61a.
指示極１と比較極２に電圧を印加すると、これらの電極間にサンプル水５中の塩素濃度に応じた拡散電流Ｉｄが流れる。指示極１に流れる拡散電流Ｉｄは、指示極１から金属球６１ａを介して接触子６２に伝達される。接触子６２から取り出された拡散電流Ｉｄは測定回路（図示せず）に入力され、拡散電流Ｉｄの大きさに応じてサンプル水５中の残留塩素濃度が算出される。このように、金属球６１ａを用いることによって、回転している指示極１から静止している接触子６２に容易に電流を取り出すことができる。 When a voltage is applied to the indicator electrode 1 and the comparison electrode 2, a diffusion current Id corresponding to the chlorine concentration in the sample water 5 flows between these electrodes. The diffusion current Id flowing through the indicator electrode 1 is transmitted from the indicator electrode 1 to the contact 62 via the metal ball 61a. The diffusion current Id extracted from the contactor 62 is input to a measurement circuit (not shown), and the residual chlorine concentration in the sample water 5 is calculated according to the magnitude of the diffusion current Id. As described above, by using the metal ball 61a, the current can be easily taken out from the rotating indicator electrode 1 to the stationary contactor 62.
スリップリングを用いた従来の電気伝達機構では、スリップリング等の部品の取り付けや交換の際に、スリップリングとブラシの位置調整や接触抵抗の確認など難しい調整作業が必要となる。一方、本発明では収納部６１に接触子６２を挿入するだけでよい。そのため、難しい調整作業をすることなく接触子６２を取り付けることができ、簡単に回転体から電流を取り出すことができる。 The conventional electric transmission mechanism using a slip ring requires difficult adjustment work such as adjustment of the position of the slip ring and the brush and confirmation of contact resistance when attaching or replacing components such as the slip ring. On the other hand, in the present invention, it is only necessary to insert the contact 62 into the storage portion 61. Therefore, the contactor 62 can be attached without performing difficult adjustment work, and the current can be easily extracted from the rotating body.
なお、指示極１が回転しているため、収納部６１内部で金属球６１ａも回転する。金属球６１ａが収納部６１内で回転することによって、金属球６１ａ自身や収納部６１内壁、接触子６２表面が研磨される。このため、金属表面に形成される酸化皮膜が除去されて導電性能が劣化しにくくなる。金属球６１ａは拡散電流Ｉｄの伝達と金属表面の酸化皮膜の除去、酸化皮膜の形成を妨げる機能を有する。また、接触子６２には複数の金属球６１ａが入れ替わり接触することになるため、接触子６２と金属球６１ａとは長期的に一定の条件に保たれ、接触抵抗も変化しにくくなる。 In addition, since the indicating electrode 1 is rotating, the metal ball 61 a is also rotated inside the storage unit 61. When the metal ball 61a rotates in the storage unit 61, the metal ball 61a itself, the inner wall of the storage unit 61, and the surface of the contact 62 are polished. For this reason, the oxide film formed on the metal surface is removed, and the conductive performance is hardly deteriorated. The metal sphere 61a has a function of preventing transmission of the diffusion current Id, removal of the oxide film on the metal surface, and formation of the oxide film. In addition, since the plurality of metal balls 61a are switched and contacted with the contactor 62, the contactor 62 and the metal ball 61a are kept in a constant condition for a long time, and the contact resistance is hardly changed.
また、接触子６２は、図３に示すように複数の電極棒で構成してもよい。接触子６２をこのような形状とすれば、接触子自体の表面積が大きくなり、接触抵抗を小さくすることができる。また、金属球６１ａが収納部６１内で撹拌されやすくなり、金属球６１ａによる研磨効果の向上が期待できる。 The contactor 62 may be composed of a plurality of electrode bars as shown in FIG. If the contactor 62 has such a shape, the contactor itself has a large surface area, and the contact resistance can be reduced. Further, the metal ball 61a is easily stirred in the storage unit 61, and an improvement in the polishing effect by the metal ball 61a can be expected.
さらに、本実施例では、収納部６１は指示極１の一部として形成されているが、指示極１と電気的に導通していれば別個の部品として形成するようにしてもよい。また、本実施例の残留塩素計においては電気伝達機構６を電流の伝達に用いたが、電力供給や電気信号の伝達にも利用することができる。 Furthermore, in the present embodiment, the storage portion 61 is formed as a part of the indicator electrode 1, but may be formed as a separate part as long as it is electrically connected to the indicator electrode 1. Further, in the residual chlorine meter of the present embodiment, the electric transmission mechanism 6 is used for current transmission, but it can also be used for power supply and electric signal transmission.
（参考例）
前記実施例１では、回転する指示極を保持する軸受けとは別に電流を伝達するための電気伝達機構を設けたが、本参考例では指示極の軸受け自体で電気伝達機構の機能を兼ねる。
(Reference example)
In the first embodiment, an electric transmission mechanism for transmitting current is provided separately from the bearing that holds the rotating indicator electrode. However, in this reference example , the bearing of the indicator electrode itself also functions as an electric transmission mechanism.
図４は本発明の残留塩素計の参考例を示す図である。転がり軸受け７によって、回転する指示極１の保持と指示極１に流れる拡散電流の取り出しを兼ねる。これ以外の構成は図６に示す従来の残留塩素計と同様である。 FIG. 4 is a view showing a reference example of the residual chlorine meter of the present invention. The rolling bearing 7 serves to both hold the rotating indicator electrode 1 and take out the diffusion current flowing through the indicator electrode 1. The other configuration is the same as that of the conventional residual chlorine meter shown in FIG.
図５は転がり軸受け７の拡大図であり、（ａ）は転がり軸受け７と指示極１の関係、（ｂ）は転がり軸受け７内部の構造を示している。転がり軸受け７は、指示極１とともに回転する内輪７１、非回転状態に固定された外輪７２、軸受け７の内部で内輪７１と外輪７２の間に収納された金属球７３から構成される。金属球７３が転がり軸受け７内部で回転することにより、内輪７１が滑らかに回転する。金属球７３の回転を円滑に行えるように、導電性の潤滑剤７４が転がり軸受け７内部に充填されている。転がり軸受け７は導電性のある素材で形成される。 FIG. 5 is an enlarged view of the rolling bearing 7, (a) shows the relationship between the rolling bearing 7 and the indicator electrode 1, and (b) shows the structure inside the rolling bearing 7. The rolling bearing 7 includes an inner ring 71 that rotates together with the indicator electrode 1, an outer ring 72 that is fixed in a non-rotating state, and a metal ball 73 that is housed between the inner ring 71 and the outer ring 72 inside the bearing 7. As the metal ball 73 rotates inside the rolling bearing 7, the inner ring 71 rotates smoothly. A conductive lubricant 74 is filled in the rolling bearing 7 so that the metal ball 73 can rotate smoothly. The rolling bearing 7 is made of a conductive material.
指示極１は内輪７１と接触して電気的に導通状態となる。また、内輪７１と外輪７２は、潤滑剤７４と金属球７３を介して電気的に導通状態となる。このため、指示極１から外輪７２までは導通状態となる。したがって、指示極１に流れる拡散電流Ｉｄは転がり軸受け７を介して外輪７２に伝達される。このような導電性のある転がり軸受け７を利用することにより、回転する指示極１に流れる電流を静止状態の外輪７２から容易に取り出すことができる。 The indicator electrode 1 comes into contact with the inner ring 71 and becomes electrically conductive. Further, the inner ring 71 and the outer ring 72 are electrically connected via the lubricant 74 and the metal ball 73. For this reason, the indicator electrode 1 to the outer ring 72 are in a conductive state. Accordingly, the diffusion current Id flowing through the indicator electrode 1 is transmitted to the outer ring 72 via the rolling bearing 7. By using such a conductive rolling bearing 7, the current flowing through the rotating indicator electrode 1 can be easily taken out from the stationary outer ring 72.
このような導電性軸受を使用して電流を伝達する構造は、スリップリングのように回転部とブラシの微妙な位置調整を必要としないで済み、指示極１の保持と電流伝達という２つの機能を同時に満たすことができる。また、スリップリングなど別個の部品が不要となるため、コストダウンを図ることができる。 Such a structure for transmitting a current using a conductive bearing does not require a delicate position adjustment of the rotating part and the brush unlike a slip ring, and has two functions of holding the indicator electrode 1 and transmitting the current. Can be satisfied at the same time. Further, since separate parts such as a slip ring are not required, the cost can be reduced.
１ 指示極
２ 比較極
３ モータ
５ サンプル水
６ 電気伝達機構
６１ 収納部
６１ａ 金属球
６１ｂ 潤滑剤
６２ 接触子
６３ 蓋体
７ 転がり軸受け
７１ 内輪
７２ 外輪
７３ 金属球
７４ 潤滑剤
DESCRIPTION OF SYMBOLS 1 Indicator pole 2 Comparison pole 3 Motor 5 Sample water 6 Electric transmission mechanism 61 Storage part 61a Metal ball 61b Lubricant 62 Contact 63 Lid body 7 Rolling bearing 71 Inner ring 72 Outer ring 73 Metal ball 74 Lubricant
Claims (6)
回転軸を中心として回転可能に支持された回転体と、
この回転体の回転軸方向の端部に形成され、導電性のある金属球を内部に収納した収納部と、
複数の電極棒で構成され、前記収納部の金属球と接触するように前記収納部に挿入された接触子とを有し、
前記収納部の金属球を介して前記回転体と前記接触子との間で電力または電気信号の伝達を行うようにしたことを特徴とする電気伝達機構。 In an electric transmission mechanism that transmits electric power or an electric signal between a rotating body and a stationary body,
A rotating body supported rotatably about a rotation axis;
A storage part that is formed at an end of the rotating body in the rotation axis direction and stores a conductive metal ball inside,
It is composed of a plurality of electrode rods, and has a contactor inserted into the storage unit so as to contact the metal ball of the storage unit,
An electric transmission mechanism characterized in that electric power or an electric signal is transmitted between the rotating body and the contact through the metal ball of the storage portion.
前記指示極の回転軸方向の端部に形成され、導電性のある金属球を内部に収納した収納部と、
複数の電極棒で構成され、前記収納部の金属球と接触するように前記収納部に挿入された接触子とを有し、
前記指示極と前記比較極間に流れる電流を前記収納部の金属球を介して前記指示極から前記接触子へ伝達するようにしたことを特徴とする残留塩素計。 Residual chlorine that immerses the indicator electrode and reference electrode in the sample water and rotates the indicator electrode in the sample water, applies a voltage between these electrodes, and measures the chlorine concentration in the sample water based on the current flowing between the electrodes. In total
A storage part that is formed at an end of the indicator electrode in the rotation axis direction and stores a conductive metal sphere inside;
It is composed of a plurality of electrode rods, and has a contactor inserted into the storage unit so as to contact the metal ball of the storage unit,
A residual chlorine meter, wherein a current flowing between the indicator electrode and the comparison electrode is transmitted from the indicator electrode to the contact through a metal sphere of the housing portion.
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