JP4313346B2 - Waterproof structure and method for waterproof bearing with rotation sensor - Google Patents

Waterproof structure and method for waterproof bearing with rotation sensor Download PDF

Info

Publication number
JP4313346B2
JP4313346B2 JP2005244901A JP2005244901A JP4313346B2 JP 4313346 B2 JP4313346 B2 JP 4313346B2 JP 2005244901 A JP2005244901 A JP 2005244901A JP 2005244901 A JP2005244901 A JP 2005244901A JP 4313346 B2 JP4313346 B2 JP 4313346B2
Authority
JP
Japan
Prior art keywords
bearing
rotation sensor
housing
electric wire
waterproof
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 - Fee Related
Application number
JP2005244901A
Other languages
Japanese (ja)
Other versions
JP2007057440A (en
Inventor
浩義 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp filed Critical NTN Corp
Priority to JP2005244901A priority Critical patent/JP4313346B2/en
Publication of JP2007057440A publication Critical patent/JP2007057440A/en
Application granted granted Critical
Publication of JP4313346B2 publication Critical patent/JP4313346B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Rolling Contact Bearings (AREA)
  • Insulated Conductors (AREA)

Description

この発明は回転センサ付軸受の防水構造および防水方法に関し、回転軸の回転数や回転速度や回転方向などを検出するためのセンサとして磁気感応素子を内蔵した回転センサ付軸受の防水構造および防水方法に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure and a waterproof method for a bearing with a rotation sensor, and relates to a waterproof structure and a waterproof method for a bearing with a rotation sensor incorporating a magnetically sensitive element as a sensor for detecting the rotational speed, rotational speed, rotational direction, and the like of a rotating shaft About.

回転センサ付軸受は、鉄道車両，自動車，設備機械，工作機械などの回転数や回転速度や回転方向などを検出するために、ホール素子やホールＩＣやＭＲ素子やＭＩ素子などの磁気感応素子を内蔵している。回転センサ付軸受は、機器などに組み込まれるが、センサに電源を供給するための電線が必要であり、信号伝達用の電線を機器のハウジングなどから外部に導出する必要がある。しかし、回転センサが組み込まれる機器の種類によっては、機器に水などがかかるものもあるため、機器内部への水などが浸入しないように防水対策を施す必要がある。   Bearings with rotation sensors use magnetic elements such as Hall elements, Hall ICs, MR elements, and MI elements to detect the rotation speed, rotation speed, and rotation direction of railway vehicles, automobiles, equipment machinery, machine tools, etc. Built-in. The rotation sensor-equipped bearing is incorporated in a device or the like, but an electric wire for supplying power to the sensor is necessary, and a signal transmission wire needs to be led out from the housing of the device or the like. However, depending on the type of device in which the rotation sensor is incorporated, some devices may be splashed with water. Therefore, it is necessary to take a waterproof measure to prevent water from entering the device.

特開平５−２１３１６７号公報（特許文献１）には、センサ部を軸受カバー部に取付け、センサハウジングと軸受カバー部との間で、圧入と溶接とによる防水対策を施すことが記載されている。
特開平５−２１３１６７号公報 Japanese Patent Application Laid-Open No. 5-213167 (Patent Document 1) describes that a sensor part is attached to a bearing cover part and a waterproof measure is taken between the sensor housing and the bearing cover part by press-fitting and welding. .
JP-A-5-213167

特許文献１に記載された防水対策では、センサハウジングと軸受カバー部との間で、圧入と溶接による防水対策をとっているため、コストが高くなってしまう。   In the waterproof measure described in Patent Document 1, since the waterproof measure by press-fitting and welding is taken between the sensor housing and the bearing cover portion, the cost becomes high.

機器内部に組み込まれた回転センサ付軸受は、電線の被覆外表面と保護チューブ内表面の間を外部から水が浸入して、機器内部に達することで、機器内部の部材に錆を発生させたり、機能低下や機能不全を招いたりすることが心配されている。   A bearing with a rotation sensor built into the device causes rust to occur on the members inside the device when water enters from the outside between the outer sheath surface of the wire and the inner surface of the protective tube and reaches the interior of the device. It is worried that it may cause functional decline or malfunction.

また、回転センサ付軸受は、機器内部のハウジングに穴などを設けて、外部に電線などを導出する必要があるため、電線などと電線導出部のハウジング穴内径部との間で防水処理を必要とする。   In addition, the bearing with a rotation sensor requires a waterproof treatment between the wire and the inner diameter of the housing hole of the wire lead-out portion because it is necessary to provide a hole in the housing inside the device and lead the wire to the outside. And

そこで、この発明の目的は、水などが電線を伝って機器内に浸入するのを防止でき、防水効果を高めた回転センサ付軸受の防水構造および防水方法を提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof structure and a waterproof method for a bearing with a rotation sensor that can prevent water and the like from entering an apparatus through an electric wire and have an improved waterproof effect.

この発明は、内輪と外輪とを含む回転軸の回転数，回転方向，回転速度のいずれかを測定するためのセンサを備えた回転センサ付軸受において、一端がセンサに接続される電線と、電線の少なくとも他端側を保護する被覆と、電線の他端側近傍に塗布される密封剤と、電線の他端側における被覆外周部の一部と、密封剤とを覆うようにして被せられるチューブとを備える。   The present invention relates to a rotation sensor bearing having a sensor for measuring any of the number of rotations, rotation direction, and rotation speed of a rotating shaft including an inner ring and an outer ring, and an electric wire having one end connected to the sensor, A tube that covers at least the other end of the wire, a sealant that is applied in the vicinity of the other end of the wire, a part of the outer periphery of the wire on the other end of the wire, and the sealant. With.

この発明では、電線の他端側が密封剤で覆われているので、電線を伝って水などが機器内に浸入するのを防止できる。   In this invention, since the other end side of the electric wire is covered with the sealant, water or the like can be prevented from entering the device through the electric wire.

好ましくは、チューブは、熱を加えることによって、径方向に所定量収縮する熱収縮チューブである。チューブを熱収縮させることで、より防水効果を高めることができる。   Preferably, the tube is a heat-shrinkable tube that shrinks by a predetermined amount in the radial direction by applying heat. The waterproof effect can be further enhanced by thermally shrinking the tube.

好ましくは、密封剤は、シリコーン，ウレタン，エポキシのうちのいずれかの樹脂である。これらの樹脂を用いることで密封性を向上できる。   Preferably, the sealant is a resin selected from silicone, urethane, and epoxy. Sealing properties can be improved by using these resins.

好ましくは、回転センサ付軸受は、ハウジングに組み込まれて電線がハウジングから引出され、ハウジングの電線を引出す部分に配置される弾性体からなるブッシュを含む。ブッシュを設けることで、ハウジングの電線引出し部分から水などが浸入するのを防止できる。   Preferably, the bearing with a rotation sensor includes a bush made of an elastic body that is incorporated in the housing, the electric wire is drawn out of the housing, and is arranged at a portion of the housing from which the electric wire is drawn. By providing the bush, water or the like can be prevented from entering from the wire drawing portion of the housing.

好ましくは、ハウジングは、開口部を含み、ハウジングの開口部を覆う蓋と、開口部と、蓋との間に設けられる板状の弾性体からなるパッキンとを含む。パッキンで蓋と開口部との間を封止することでハウジングと蓋との間から水などが浸入するのを防止できる。   Preferably, the housing includes an opening, and includes a lid that covers the opening of the housing, an opening, and a packing made of a plate-like elastic body provided between the lid. Sealing between the lid and the opening with the packing can prevent water and the like from entering between the housing and the lid.

好ましくは、ブッシュとパッキンとは一体形状からなる。一体形状とすることで製造が容易になりコストを下げることができる。   Preferably, the bush and the packing are integrally formed. By making it an integral shape, manufacturing becomes easy and cost can be reduced.

この発明の他の局面は、内輪と外輪とを含む回転軸の回転数，回転方向，回転速度のいずれかを測定するためのセンサを備えた回転センサ付軸受の電線組み込み方法であって、電線の一端をセンサに接続する工程と、電線の他端近傍に密封剤を塗布する工程と、電線の他端側における被覆外周部の一部と、密封剤とを覆うようにしてチューブを被せる工程とを備える。   Another aspect of the present invention is a method for assembling an electric wire in a bearing with a rotation sensor provided with a sensor for measuring any of the rotational speed, rotational direction, and rotational speed of a rotating shaft including an inner ring and an outer ring. A step of connecting one end of the wire to the sensor, a step of applying a sealant in the vicinity of the other end of the electric wire, and a step of covering the tube so as to cover a part of the outer periphery of the coating on the other end side of the electric wire and the sealant With.

このような電線組み込み方法により、容易に防水効果をもたせて電線を回転センサ付軸受に組み込むことができる。   By such an electric wire assembling method, the electric wire can be easily incorporated into the bearing with the rotation sensor with a waterproof effect.

電線の一端をセンサに接続し、電線の他端側近傍に密封剤を塗布し、電線の他端側における被覆外周部の一部と、密封剤とを覆うようにしてチューブを被せるようにしたので、水などが電線を伝って機器内に浸入するのを防止して防水効果を高めることができる。   One end of the wire was connected to the sensor, a sealant was applied in the vicinity of the other end of the wire, and the tube was covered so as to cover a part of the outer periphery of the coating on the other end side of the wire and the sealant. As a result, water and the like can be prevented from entering the device through the electric wire, thereby enhancing the waterproof effect.

図１はこの発明の一実施形態の回転センサ付軸受を示す図であり、特に、（Ａ）は（Ｂ）に示す線ＩＡ−Ｏ−ＩＡに沿う断面図であり、（Ｂ）は（Ａ）の線ＩＢ−ＩＢ方向から見た図である。   1 is a view showing a bearing with a rotation sensor according to an embodiment of the present invention. In particular, (A) is a sectional view taken along line IA-O-IA shown in (B), and (B) is (A ) Is a view seen from the direction of line IB-IB.

転がり軸受１０は、例えば回転側の軸受内輪１１と、固定側の軸受外輪１２と、軸受内輪１１および軸受外輪１２との間に配置された複数の転動体１３とを有している。なお、軸受内輪１１が固定側であって、軸受外輪１２が回転側であってもよい。複数の転動体１３は、保持器１４によって保持されており、軸受内輪１１と軸受外輪１２との間における軸受空間の軸方向一方側は軸受シール１５によって密封されている。   The rolling bearing 10 includes, for example, a rotation-side bearing inner ring 11, a fixed-side bearing outer ring 12, and a plurality of rolling elements 13 disposed between the bearing inner ring 11 and the bearing outer ring 12. The bearing inner ring 11 may be on the fixed side and the bearing outer ring 12 may be on the rotating side. The plurality of rolling elements 13 are held by a cage 14, and one axial side of the bearing space between the bearing inner ring 11 and the bearing outer ring 12 is sealed by a bearing seal 15.

軸受空間の軸方向他方側には、センサ１が装着されている。すなわち、軸受内輪１１の外周面にはエンコーダ取付部材２１が嵌め込まれており、エンコーダ取付部材２１の外周面にはリング状の磁気エンコーダ２２が装着されている。磁気エンコーダ２２の磁気センサ２５に対向する面には、周方向にＳ極とＮ極が交互に着磁されている。   A sensor 1 is mounted on the other axial side of the bearing space. That is, an encoder mounting member 21 is fitted on the outer peripheral surface of the bearing inner ring 11, and a ring-shaped magnetic encoder 22 is mounted on the outer peripheral surface of the encoder mounting member 21. S poles and N poles are alternately magnetized in the circumferential direction on the surface of the magnetic encoder 22 facing the magnetic sensor 25.

磁気センサ２５は、例えばホール素子やホールＩＣやＭＲ素子やＭＩ素子などが用いられており、磁気エンコーダ２２に対向して基板２６に取付けられている。基板２６は図示しないが円弧状に形成されており、一端側には磁気センサ２５が取付けられており、他端側には図１（Ｂ）に示すバラ電線３１の一端が接続されている。基板２６には、図示しないが電磁波ノイズを除去するためにノイズフィルタが取付けられており、基板２６上はモールド樹脂２８によって封止されている。   The magnetic sensor 25 uses, for example, a Hall element, Hall IC, MR element, MI element, or the like, and is attached to the substrate 26 so as to face the magnetic encoder 22. Although not shown, the substrate 26 is formed in an arc shape, and a magnetic sensor 25 is attached to one end side, and one end of a loose wire 31 shown in FIG. 1B is connected to the other end side. Although not shown, a noise filter is attached to the substrate 26 in order to remove electromagnetic wave noise, and the substrate 26 is sealed with a mold resin 28.

磁気センサ２５は、防水のために樹脂などで形成されたセンサケース２４によって覆われており、センサケース２４の外周面は導電部材からなる外環２３によって保護され、センサケース２４の軸方向他方端面および内周面は側板２９で保護されている。   The magnetic sensor 25 is covered with a sensor case 24 formed of resin or the like for waterproofing, and the outer peripheral surface of the sensor case 24 is protected by an outer ring 23 made of a conductive member. The inner peripheral surface is protected by a side plate 29.

バラ電線３１の他端にはコネクタ３２が接続されている。バラ電線３１の他端側には、纏めかつ保護するために、被覆として保護チューブ３３が被せられている。この保護チューブ３３は熱収縮チューブからなる。保護チューブ３３の先端部およびその近傍のバラ電線３１の周りに密封剤としてシリコーン剤３４を塗布し、さらに熱収縮チューブからなる防水チューブ３５をシリコーン剤３４の塗布部を覆うようにして被せる。その後、熱を加えて保護チューブ３３および防水チューブ３５を径方向に所定量収縮させ、絞り込むことでシリコーン剤３４の保持と密封とを行う。または、保護チューブ３３を先に熱収縮させた後、シリコーン剤３４を塗布し、さらに防水チューブ３５を被せて熱収縮する。   A connector 32 is connected to the other end of the loose wire 31. The other end side of the loose wire 31 is covered with a protective tube 33 as a covering for collecting and protecting. The protective tube 33 is a heat shrinkable tube. A silicone agent 34 is applied as a sealant around the distal end portion of the protective tube 33 and the rose wire 31 in the vicinity thereof, and a waterproof tube 35 made of a heat-shrinkable tube is covered so as to cover the application portion of the silicone agent 34. Thereafter, heat is applied to shrink the protective tube 33 and the waterproof tube 35 by a predetermined amount in the radial direction, and the silicone agent 34 is held and sealed by narrowing down. Alternatively, the protective tube 33 is first heat-shrinked, and then the silicone agent 34 is applied, and the waterproof tube 35 is further covered to heat-shrink.

上述のごとく、この実施形態によれば、バラ電線３１と保護チューブ３３との外周部にシリコーン剤３４を塗布し、さらにその上に防水チューブ３５を被せて熱収縮させることで、バラ電線３１と保護チューブ３３との間に水などが侵入するのを防止して防水効果を高めることができる。これにより、バラ電線３１を伝って機器外部から機器内部に水などが浸入するのを防止できるので、機器の信頼性および寿命を向上できる。   As described above, according to this embodiment, the silicone wire 34 is applied to the outer peripheral portion of the loose wire 31 and the protective tube 33, and the waterproof tube 35 is placed on the silicone agent 34, and the heat shrinkage is performed. Water and the like can be prevented from entering between the protective tube 33 and the waterproof effect can be enhanced. Thereby, it is possible to prevent water and the like from entering the inside of the device from the outside of the device through the loose wire 31, so that the reliability and life of the device can be improved.

なお、密封剤としてシリコーン剤３４に代えて、ウレタンやエポキシ樹脂を用いてもよい。   In addition, it may replace with the silicone agent 34 as a sealing agent, and may use urethane and an epoxy resin.

図２は、この発明の他の実施形態における回転センサ付軸受の電線引出し部分を示す図である。図１に示した実施形態はバラ電線３１を用いたのに対して、この実施形態は、多芯電線４１を使用したものである。すなわち、多芯電線４１の一端は図１に示した基板２６に接続されており、他端はコネクタ３２に接続されている。多芯電線４１は被覆として外被線４２によって覆われており、多芯電線４１の他端側には図１と同様にして、シリコーン剤３４を塗布し、さらにその上に熱収縮性の防水チューブ３５を被せている。防水チューブ３５を熱収縮させることで、多芯電線４１と外被線４２との間に、水などが侵入するのを防止できる。   FIG. 2 is a view showing a wire drawing portion of a bearing with a rotation sensor according to another embodiment of the present invention. The embodiment shown in FIG. 1 uses the loose wire 31, whereas this embodiment uses a multi-core wire 41. That is, one end of the multicore electric wire 41 is connected to the substrate 26 shown in FIG. 1 and the other end is connected to the connector 32. The multicore electric wire 41 is covered with a sheath wire 42 as a coating, and the other end of the multicore electric wire 41 is coated with a silicone agent 34 in the same manner as in FIG. The tube 35 is covered. By thermally shrinking the waterproof tube 35, it is possible to prevent water and the like from entering between the multi-core electric wire 41 and the jacketed wire 42.

図３はこの発明のさらに他の実施形態の回転センサ付軸受を示す図であり、（Ａ）は側面断面図であり、（Ｂ）は（Ａ）の線ＩＩＢ−ＩＩＢから見た側面図である。図４は図３に示したパッキンを示す斜視図である。   3A and 3B are views showing a bearing with a rotation sensor according to still another embodiment of the present invention, in which FIG. 3A is a side cross-sectional view, and FIG. 3B is a side view as viewed from line IIB-IIB in FIG. is there. FIG. 4 is a perspective view showing the packing shown in FIG.

図３（Ａ）において、開口部を有する中空のハウジング５１内には、回転軸５２が転がり軸受１０によって支持されている。転がり軸受１０は、図１と同様にして、軸受内輪１１と、軸受外輪１２と、転動体１３と、保持器１４と、軸受シール１５とを含む。回転軸５２は、軸受内輪１１の内径部分に挿入されており、軸受外輪１２の外径部分がハウジング５１に挿入されている。センサ１は、図１と同様にして構成された磁気エンコーダ２２と、磁気センサ２５とを含む。   In FIG. 3A, a rotating shaft 52 is supported by a rolling bearing 10 in a hollow housing 51 having an opening. The rolling bearing 10 includes a bearing inner ring 11, a bearing outer ring 12, a rolling element 13, a cage 14, and a bearing seal 15 in the same manner as in FIG. 1. The rotating shaft 52 is inserted into the inner diameter portion of the bearing inner ring 11, and the outer diameter portion of the bearing outer ring 12 is inserted into the housing 51. The sensor 1 includes a magnetic encoder 22 and a magnetic sensor 25 configured in the same manner as in FIG.

ハウジング５１には、防水シールとして図４に示すゴムパッキン５３を介して蓋５４が被せられており、ボルト５５によりねじ止めされている。ゴムパッキン５３は、耐油性に優れた例えばＮＢＲ（ニトリロゴム）や、耐熱性に優れたシリコーン系，フッ素系材料をリング状に形成し、４箇所にボルトを挿通するための穴５６を形成したものである。ゴムパッキン５３は、ハウジング５１と蓋５４との間に挟まれてゴムの弾力性によって、ハウジング５１と蓋５４との間からの水などの浸入を防止する。ゴムパッキン５３には、その一部に、ゴムブッシュ６２が一体的に形成されている。ゴムブッシュ６２は円筒形に形成されているが、多角形であってもよい。   The housing 51 is covered with a lid 54 through a rubber packing 53 shown in FIG. 4 as a waterproof seal, and is screwed with a bolt 55. The rubber packing 53 is made of, for example, NBR (nitrilo rubber) excellent in oil resistance, silicone-based or fluorine-based material excellent in heat resistance in a ring shape, and formed with holes 56 for inserting bolts in four places. It is. The rubber packing 53 is sandwiched between the housing 51 and the lid 54 and prevents intrusion of water or the like from between the housing 51 and the lid 54 due to the elasticity of rubber. A rubber bushing 62 is integrally formed on a part of the rubber packing 53. The rubber bushing 62 is formed in a cylindrical shape, but may be a polygonal shape.

ハウジング５１と蓋５４との連結部分には、貫通穴６１が形成されており、この貫通穴６１にはゴムブッシュ６２が嵌め込まれる。ゴムブッシュ６２には、保護チューブ３３によって覆われたバラ電線３１の一端が挿入されており、基板２６に接続されている。このために、ゴムブッシュ６２は、保護チューブ３３の外径部分をゴムの弾力性によって締め付ける寸法とし、同時にハウジング５１の貫通穴６１の内径部分に密着する寸法に選ばれている。バラ電線３１の他端にはコネクタ３２が接続されている。このコネクタ３２は、バラ電線３１をゴムブッシュ６２に通してからバラ電線３１の他端に接続するか、あるいは予めバラ電線３１の他端側にシリコーン剤３４を塗布して防水チューブ３５を被せておき、その多端側に接続しておいてもよい。   A through hole 61 is formed in a connecting portion between the housing 51 and the lid 54, and a rubber bush 62 is fitted into the through hole 61. One end of the loose wire 31 covered with the protective tube 33 is inserted into the rubber bush 62 and connected to the substrate 26. For this purpose, the rubber bushing 62 is selected to have a size that allows the outer diameter portion of the protective tube 33 to be tightened by the elasticity of rubber, and at the same time, to be in close contact with the inner diameter portion of the through hole 61 of the housing 51. A connector 32 is connected to the other end of the loose wire 31. The connector 32 is connected to the other end of the loose wire 31 after passing the loose wire 31 through the rubber bushing 62, or previously coated with a silicone agent 34 on the other end of the loose wire 31 and covered with a waterproof tube 35. Alternatively, it may be connected to the multi-end side.

上述のごとく、この実施形態によれば、バラ電線３１の保護チューブ３３とハウジング５１の貫通穴６１の内径部分との間に、ゴムブッシュ６２を介在させることで、この部分での外部からの水などの浸入を防止できる。したがって、図１および図２の実施形態と同様にして、信頼性および寿命が向上する。   As described above, according to this embodiment, the rubber bush 62 is interposed between the protective tube 33 of the loose wire 31 and the inner diameter portion of the through hole 61 of the housing 51, so that water from the outside in this portion can be obtained. Can be prevented. Therefore, reliability and lifetime are improved in the same manner as the embodiment of FIGS.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示された実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

この発明の回転センサ付軸受は、鉄道車両，自動車，設備機械，工作機械などの水が浸入しやすい機器で回転数や回転速度や回転方向などを検出するために利用できる。   The bearing with a rotation sensor according to the present invention can be used for detecting the number of rotations, the rotation speed, the rotation direction, and the like with a device such as a railway vehicle, an automobile, an equipment machine, a machine tool, etc., which is easily intruded by water.

この発明の一実施形態の回転センサ付軸受を示す図である。It is a figure which shows the bearing with a rotation sensor of one Embodiment of this invention. この発明の他の実施形態における回転センサ付軸受の電線引出し部分を示す図である。It is a figure which shows the electric wire drawer | drawing-out part of the bearing with a rotation sensor in other embodiment of this invention. この発明のさらに他の実施形態の回転センサ付軸受を示す図である。It is a figure which shows the bearing with a rotation sensor of other embodiment of this invention. 図３に示したパッキンを示す斜視図である。It is a perspective view which shows the packing shown in FIG.

符号の説明Explanation of symbols

１ センサ、１０ 転がり軸受、１１ 軸受内輪、１２ 軸受外輪、１３ 転動体、１４ 保持器、１５ 軸受シール、２２ 磁気エンコーダ、２５ 磁気センサ、２６ 基板、２９ 側板、３１ バラ電線、３２ コネクタ、３３ 保護チューブ、３４ シリコーン剤、３５ 防水チューブ、４１ 多芯電線、４２ 外被線、５１ ハウジング、５２ 回転軸、５３ ゴムパッキン、５４ 蓋、５６，６１ 貫通穴、６２ ゴムブッシュ。   DESCRIPTION OF SYMBOLS 1 Sensor, 10 Rolling bearing, 11 Bearing inner ring, 12 Bearing outer ring, 13 Rolling body, 14 Cage, 15 Bearing seal, 22 Magnetic encoder, 25 Magnetic sensor, 26 Substrate, 29 Side plate, 31 Loose wire, 32 Connector, 33 Protection Tube, 34 Silicone agent, 35 Waterproof tube, 41 Multi-core wire, 42 Outer wire, 51 Housing, 52 Rotating shaft, 53 Rubber packing, 54 Lid, 56, 61 Through hole, 62 Rubber bushing.

Claims (7)

内輪と外輪とを含む回転軸の回転数，回転方向，回転速度のいずれかを測定するためのセンサを備えた回転センサ付軸受と、
前記回転センサ付軸受を収容したハウジングと、
一端が前記センサに接続されて前記ハウジングから外部に導出され、他端がコネクタに接続された被覆電線と、
前記被覆電線を取り囲み、一端が前記ハウジングの被覆電線導出部に固定され、他端が前記コネクタ近傍で終端となって前記被覆電線を露出させる保護チューブと、
前記保護チューブから露出した他端側の前記被覆電線上に塗布される密封剤と、
前記保護チューブの他端と、他端側の前記被覆電線上の前記密封剤とを覆うように被せられる防水チューブとを備える、回転センサ付軸受の防水構造。 A bearing with a rotation sensor including a sensor for measuring any of the rotational speed, rotation direction, and rotation speed of the rotation shaft including the inner ring and the outer ring ;
A housing containing the rotation sensor bearing;
One end is connected to the sensor and led out from the housing, and the other end is connected to a connector ,
A protective tube that surrounds the covered electric wire, one end is fixed to the covered electric wire lead-out portion of the housing, and the other end is terminated near the connector to expose the covered electric wire;
A sealant applied on the covered electric wire on the other end exposed from the protective tube;
A waterproof structure for a bearing with a rotation sensor, comprising: a waterproof tube that covers the other end of the protective tube and the sealant on the covered electric wire on the other end side . 前記防水チューブは、熱を加えることによって、径方向に所定量収縮する熱収縮チューブである、請求項１に記載の回転センサ付軸受の防水構造。 The waterproof structure for a bearing with a rotation sensor according to claim 1, wherein the waterproof tube is a heat-shrinkable tube that contracts by a predetermined amount in the radial direction when heat is applied . 前記密封剤は、シリコーン，ウレタン，エポキシのうちのいずれかの樹脂である、請求項１または２に記載の回転センサ付軸受の防水構造。 The waterproof structure for a bearing with a rotation sensor according to claim 1 or 2, wherein the sealant is a resin selected from silicone, urethane, and epoxy. 前記ハウジングと、前記保護チューブとの間に配置される弾性体からなるブッシュを含む、請求項１から３のいずれかに記載の回転センサ付軸受の防水構造。 The waterproof structure for a bearing with a rotation sensor according to any one of claims 1 to 3, comprising a bush made of an elastic body disposed between the housing and the protective tube . 前記ハウジングは、前記回転センサ付軸受を収容するための開口部を含み、
さらに、前記ハウジングの開口部を覆う蓋と、
前記開口部と、前記蓋との間に設けられる板状の弾性体からなるパッキンとを含む、請求項４に記載の回転センサ付軸受の防水構造。 The housing includes an opening for accommodating the bearing with the rotation sensor ,
A lid covering the opening of the housing;
The waterproof structure for a bearing with a rotation sensor according to claim 4, comprising a packing made of a plate-like elastic body provided between the opening and the lid . 前記ブッシュと前記パッキンとは一体形状からなる、請求項４または５に記載の回転センサ付軸受の防水構造。 The waterproof structure for a bearing with a rotation sensor according to claim 4 or 5, wherein the bush and the packing are integrally formed . 内輪と外輪とを含む回転軸の回転数，回転方向，回転速度のいずれかを測定するためのセンサを備えた回転センサ付軸受の防水方法であって、
前記回転センサ付軸受をハウジングに収容する工程と、
被覆電線の一端を前記センサに接続して前記ハウジングから外部に導出し、他端をコネクタに接続する工程と、
保護チューブで前記被覆電線を取り囲み、前記保護チューブの一端を前記ハウジングの被覆電線導出部に固定し、他端を前記コネクタ近傍で終端となって前記被覆電線を露出させる工程と、
前記保護チューブから露出した他端側の前記被覆電線上に密封剤を塗布する工程と、
前記保護チューブの他端と、他端側の前記被覆電線上の前記密封剤とを覆うように防水チューブを被せる工程とを備える、回転センサ付軸受の防水方法。 A method for waterproofing a bearing with a rotation sensor comprising a sensor for measuring any of the rotational speed, rotational direction, and rotational speed of a rotating shaft including an inner ring and an outer ring ,
Storing the bearing with the rotation sensor in a housing;
Connecting one end of the covered wire to the sensor and leading out from the housing, and connecting the other end to the connector ;
Surrounding the covered electric wire with a protective tube , fixing one end of the protective tube to the covered electric wire lead-out portion of the housing, and exposing the covered electric wire with the other end terminated in the vicinity of the connector;
Applying a sealant on the coated wire on the other end exposed from the protective tube;
A method for waterproofing a bearing with a rotation sensor, comprising: covering the other end of the protective tube with the waterproof tube so as to cover the sealant on the covered electric wire on the other end side .
JP2005244901A 2005-08-25 2005-08-25 Waterproof structure and method for waterproof bearing with rotation sensor Expired - Fee Related JP4313346B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005244901A JP4313346B2 (en) 2005-08-25 2005-08-25 Waterproof structure and method for waterproof bearing with rotation sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005244901A JP4313346B2 (en) 2005-08-25 2005-08-25 Waterproof structure and method for waterproof bearing with rotation sensor

Publications (2)

Publication Number Publication Date
JP2007057440A JP2007057440A (en) 2007-03-08
JP4313346B2 true JP4313346B2 (en) 2009-08-12

Family

ID=37921060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005244901A Expired - Fee Related JP4313346B2 (en) 2005-08-25 2005-08-25 Waterproof structure and method for waterproof bearing with rotation sensor

Country Status (1)

Country Link
JP (1) JP4313346B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2403118A3 (en) 2010-07-01 2014-10-29 Kabushiki Kaisha Yaskawa Denki Actuator
JP5206749B2 (en) * 2010-07-30 2013-06-12 株式会社安川電機 Actuator

Also Published As

Publication number Publication date
JP2007057440A (en) 2007-03-08

Similar Documents

Publication Publication Date Title
US7215110B2 (en) Seal ring, sealing apparatus and bearing apparatus
JP5698389B2 (en) Vehicle sensor unit
US8253284B2 (en) Electric motor and electric motor vehicle
US5594334A (en) Bearing having a sensor incorporated in a bearing seal and a circumferential sensor cable extending through and along the side of the bearing seal
RU2472046C2 (en) Bearing seal
JP4514716B2 (en) Resolver
KR100250195B1 (en) Sealed movement sensor
CN108534804B (en) Detection device and method for manufacturing detection device
JP4313346B2 (en) Waterproof structure and method for waterproof bearing with rotation sensor
WO2011027482A1 (en) Rotation detecting apparatus
JP2007024778A (en) Bearing with rotary sensor
JP2006189101A (en) Bearing device with sensor
JP4983108B2 (en) Bearing device with sensor
JP2009270618A (en) Bearing device
KR102490076B1 (en) Sensing device for vehicle, wheel bearing assembly, and method for manufacturing sensing device for vehicle
JPH08122351A (en) Wheel support bearing with rotary sensor
JP4235833B2 (en) Railway vehicle bearing device
JP2009036233A (en) Bearing with sensor
JP2009069000A (en) Sensor unit
JP2008267423A (en) Bearing seal
JP2021509248A (en) motor
CN118159815A (en) Magnetostrictive torque sensor
JP2516584Y2 (en) Wheel seal
JP2010169652A (en) Rotation angle detector
JP5366383B2 (en) Sensor unit

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080709

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20081210

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20090116

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090203

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090402

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090512

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090514

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120522

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4313346

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130522

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140522

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees