JPH02201268A - Outer ring rotation detector for roller bearing - Google Patents
Outer ring rotation detector for roller bearingInfo
- Publication number
- JPH02201268A JPH02201268A JP1019763A JP1976389A JPH02201268A JP H02201268 A JPH02201268 A JP H02201268A JP 1019763 A JP1019763 A JP 1019763A JP 1976389 A JP1976389 A JP 1976389A JP H02201268 A JPH02201268 A JP H02201268A
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- magnetic pole
- roller bearing
- detection sensor
- seal plate
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011162 core material Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
この発明はころがり軸受の外輪の回転検出装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a rotation detection device for an outer ring of a rolling bearing.
［従来の技術Ｊ
従来、軸受外輪の回転数を検出するには、回転数に比例
した（ワ返し周波数を有するパルス信号を取出す方法と
してロータリーエンコーダを外輪に係合させて、ロータ
リーエンコーダの回転に伴って発生するパルス列信号を
検出する方法があった。[Prior art J] Conventionally, in order to detect the rotational speed of the outer ring of a bearing, a rotary encoder is engaged with the outer ring, and a rotary encoder is engaged with the outer ring, and the rotation of the rotary encoder is There was a method of detecting the pulse train signal generated accordingly.
［発明が解決しようとする課題］
しかしながら転がり軸受外輪の回転数に比例したくり返
しパルス列信号を取り出すために軸受外輪にロータリー
エンコーダを接続した場合（第４図参ＩＩ） 、ロータ
リーエンコーダ９のトルクロスのために、被測定軸受の
外輪２の回転が影響を受け、ロータリーエンコーダを接
続しない７１７−の回転時と異ってしまうと云う問題が
あり、またロータリーエンコーダ９、接姦慨構としての
カップリング８、アタブタ−７ｋｌ？を取りつけるため
のスペースが必要であり装置が大型化すると云う問題も
あった。[Problems to be Solved by the Invention] However, when a rotary encoder is connected to the outer ring of the bearing in order to extract a repetitive pulse train signal proportional to the rotation speed of the outer ring of the rolling bearing (see II in Fig. 4), due to the torque loss of the rotary encoder 9. However, there is a problem in that the rotation of the outer ring 2 of the bearing to be measured is affected and becomes different from the rotation of the rotary encoder 717- when the rotary encoder is not connected. , attabuta-7kl? There was also the problem that space was required to install the device, which increased the size of the device.
［課題を解決するための手段］
この発明の装置は、ころがり軸受のシール板の鉄板の表
面に少なくとも２極以上の磁極を構成し、前記シール板
表面の近傍に磁極検出センサーを設けて、磁極の交番的
変化を一検出゛することによって回転数に比例したくり
返し周波数を有するパルス列信号を取り出し、この信号
を電気的に解析処理する装置である。[Means for Solving the Problems] The device of the present invention comprises at least two or more magnetic poles on the surface of an iron plate of a seal plate of a rolling bearing, and a magnetic pole detection sensor is provided near the surface of the seal plate to detect the magnetic poles. This device extracts a pulse train signal having a repetition frequency proportional to the number of revolutions by detecting an alternating change in the number of rotations, and electrically analyzes and processes this signal.
［作用Ｊ
この発明の装置によれば転がり軸受の外輪回転数比例の
くり返しパルス列信号を取り出すのに必要な装置の所要
スペースは従来の場合に比較して少なくてすみ、また外
輪とは非接触状態で信号が取出されるので、外輪回転に
影響を与えない。[Operation J] According to the device of this invention, the space required for the device to extract the repetitive pulse train signal proportional to the rotational speed of the outer ring of a rolling bearing is smaller than in the conventional case, and the outer ring is not in contact with the device. Since the signal is extracted at , it does not affect the rotation of the outer ring.
［実施例］
次に第１図ないし第３図を参照しながらこの発明の一実
施例について説明する。[Embodiment] Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
１は回転検出される転がり軸受の内輪、２は前記軸受の
外輪、３は転動体である複数個のボール、４は前記ボー
ル３を等間隔に保持する保持器、５は外部からの異物の
侵入を防止し、また封入されたグリースの漏洩を防止す
るためのシール板である。1 is an inner ring of a rolling bearing whose rotation is detected, 2 is an outer ring of the bearing, 3 is a plurality of balls that are rolling elements, 4 is a cage that holds the balls 3 at equal intervals, and 5 is a foreign object from the outside. This is a seal plate to prevent intrusion and leakage of sealed grease.
この実施例におけるシール板５は外輪２に固定されてい
て、外輪と一体になって回転する。シール板５の芯材で
ある鉄板５ａの軸受外側表面には磁性体５ｂが塗布され
、周方向に少なくとも２極以上の磁極が構成されている
。通常は多数の磁極が着磁されたものがのぞましい。前
記磁性体５ｂを塗布された鉄板５ａは一部を除き、弾性
体５０例乏ば、耐油性ゴム５ｃにより被覆されている。The seal plate 5 in this embodiment is fixed to the outer ring 2 and rotates together with the outer ring. A magnetic material 5b is coated on the bearing outer surface of the iron plate 5a, which is the core material of the seal plate 5, and at least two or more magnetic poles are formed in the circumferential direction. Usually, it is preferable to use a magnet with a large number of magnetic poles. The iron plate 5a coated with the magnetic material 5b is covered with an oil-resistant rubber 5c, except for a portion of the iron plate 5a, which is made of an elastic material.
このシール板５の磁極の周方向変位を検出するためにそ
の近傍にホール素子、ホールＩＣ等の磁極検出センサー
６が設けられている。検出センサー、例えばアンプ内蔵
のホールＩＣを用いた場合、得られた信号の処理は、波
形整形回路６１、周期比較器６２、基準周期回路６３、
および表示１１６６４よりなる電気回路によりなされる
。In order to detect circumferential displacement of the magnetic pole of the seal plate 5, a magnetic pole detection sensor 6 such as a Hall element or a Hall IC is provided in the vicinity thereof. When a detection sensor, for example a Hall IC with a built-in amplifier, is used, the obtained signal is processed by a waveform shaping circuit 61, a period comparator 62, a reference period circuit 63,
and an electric circuit consisting of a display 11664.
上記構成の回転検出′ｆＩｃｒａにおいて外輪２が回転
すると外輪に取付られなシール板５も共に回転し、磁性
体５ｂに着磁された磁極も回転変位する。この磁極の変
位は、検出センサー６により検出され、波形整形回路６
１により波形整形が行われ、予め定めた基準周期と検出
周期とが比較回路６３で比較され、比較結果に基づく信
号が表示機器６４に表示され、外輪２の回転変位状態を
検出することができる。When the outer ring 2 rotates in the rotation detection 'fIcra' having the above configuration, the seal plate 5 not attached to the outer ring also rotates, and the magnetic pole magnetized on the magnetic body 5b is also rotationally displaced. This displacement of the magnetic pole is detected by the detection sensor 6, and the waveform shaping circuit 6
Waveform shaping is performed by 1, a predetermined reference period and a detection period are compared in a comparison circuit 63, a signal based on the comparison result is displayed on a display device 64, and the rotational displacement state of the outer ring 2 can be detected. .
［発明の効果］
この発明の装置は松が９軸受まわりの必要スペースが少
なくてすむので装置全体の必要体積を小さくできる。従
って本装置は回転検出を必要とするいずれの装置にも略
取付可能で用途が広い特徴をもっでいる。また電気回路
も比較的簡単であり、安価である。さらに外輪とは非接
触状態で信号が取出されるので、外輪回転に影響を与え
ないと云う効果もある。[Effects of the Invention] Since the device of this invention requires less space around the 9 bearings, the required volume of the entire device can be reduced. Therefore, this device has a feature that it can be attached to almost any device that requires rotation detection and has a wide range of uses. The electric circuit is also relatively simple and inexpensive. Furthermore, since the signal is taken out without contacting the outer ring, there is also the effect that it does not affect the rotation of the outer ring.
第１図ないし第３図はこの発明の一実施例を示し、第１
図はブロック図を含む装置の断面図、第２図はシール板
の断面図、第３図はシール板の一部を破断した斜視図、
第４図は従来の回転検出装置の説明図である。
符号の説明Figures 1 to 3 show one embodiment of the present invention.
The figure is a sectional view of the device including a block diagram, FIG. 2 is a sectional view of the seal plate, and FIG. 3 is a partially cutaway perspective view of the seal plate.
FIG. 4 is an explanatory diagram of a conventional rotation detection device. Explanation of symbols
Claims (1)
板の芯材を構成する鉄板の表面に少なくとも２極以上の
磁極をもったシール板と、前記シール板の近傍に位置し
前記磁極の交番的変化を検出し回転数に比例したくり返
し周波数を有するパルス列信号を取出すための磁極検出
センサーと、前記検出センサーにより検出した信号を解
析処理する電気回路とを有するころがり輸受の外輪回転
検出装置。In a sealed rolling bearing for rotating an outer ring, there is provided a seal plate having at least two or more magnetic poles on the surface of an iron plate constituting a core material of the seal plate, and an alternating change in the magnetic poles located near the seal plate. An outer ring rotation detection device for a rolling transport vehicle, comprising a magnetic pole detection sensor for detecting the pulse train and extracting a pulse train signal having a repetition frequency proportional to the number of rotations, and an electric circuit for analyzing and processing the signal detected by the detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019763A JPH02201268A (en) | 1989-01-31 | 1989-01-31 | Outer ring rotation detector for roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019763A JPH02201268A (en) | 1989-01-31 | 1989-01-31 | Outer ring rotation detector for roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02201268A true JPH02201268A (en) | 1990-08-09 |
Family
ID=12008377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1019763A Pending JPH02201268A (en) | 1989-01-31 | 1989-01-31 | Outer ring rotation detector for roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02201268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278319A (en) * | 1995-02-03 | 1996-10-22 | Carl Freudenberg:Fa | Packing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62242130A (en) * | 1986-04-11 | 1987-10-22 | Koyo Seiko Co Ltd | Seal with built-in pulser |
| JPS6415608A (en) * | 1987-07-10 | 1989-01-19 | Olympus Optical Co | Rotation detector |
| JPS6421219A (en) * | 1987-07-16 | 1989-01-24 | Nippon Seiko Kk | Bearing assembly |
-
1989
- 1989-01-31 JP JP1019763A patent/JPH02201268A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62242130A (en) * | 1986-04-11 | 1987-10-22 | Koyo Seiko Co Ltd | Seal with built-in pulser |
| JPS6415608A (en) * | 1987-07-10 | 1989-01-19 | Olympus Optical Co | Rotation detector |
| JPS6421219A (en) * | 1987-07-16 | 1989-01-24 | Nippon Seiko Kk | Bearing assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278319A (en) * | 1995-02-03 | 1996-10-22 | Carl Freudenberg:Fa | Packing device |
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