JP3089874B2 - Position detection device - Google Patents
Position detection deviceInfo
- Publication number
- JP3089874B2 JP3089874B2 JP05006867A JP686793A JP3089874B2 JP 3089874 B2 JP3089874 B2 JP 3089874B2 JP 05006867 A JP05006867 A JP 05006867A JP 686793 A JP686793 A JP 686793A JP 3089874 B2 JP3089874 B2 JP 3089874B2
- Authority
- JP
- Japan
- Prior art keywords
- end cover
- detection unit
- detecting means
- detecting device
- present
- 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
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Details Of Measuring And Other Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば磁気スケール等
に使用して好適な位置検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position detecting device suitable for use in, for example, a magnetic scale.
【０００２】[0002]
【従来の技術】従来、磁気記録媒体に対向して配置さ
れ、磁気記録媒体に対して検出部を移動させて、その検
出信号により位置を検出する位置検出装置において、磁
気記録媒体の左右の両端部に設けられた端部カバーは、
外部からの衝撃等により破損しないように、剛性をもた
せるために板厚を厚くしていた。2. Description of the Related Art Conventionally, in a position detecting device which is arranged to face a magnetic recording medium, moves a detecting section with respect to the magnetic recording medium, and detects a position based on a detection signal, a left and right end of the magnetic recording medium is used. The end cover provided on the part
In order to have rigidity so that it is not damaged by an external impact or the like, the plate thickness is increased.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述した装置
では、端部カバーの板厚が厚いため、スケールオーバー
ラン時に、検出部の破損が大きくなる。検出部の破損を
小さくするために板厚を薄くすると、端部カバーの剛性
が失われてしまい、スケール端部カバーの外側からの衝
撃等に対して弱くなり、また、位置検出装置の内部への
ゴミ等の進入を防ぐ構造がとりにくくなるという不都合
があった。本発明はかかる点に鑑みてなされたもので、
スケールオーバーラン時の検出部の破損を小さくする位
置検出装置を提案しようとするものである。However, in the above-described apparatus, since the end cover has a large plate thickness, the damage to the detecting section is increased during scale overrun. If the plate thickness is reduced to reduce the damage of the detection unit, the rigidity of the end cover will be lost, making it weaker against impact from the outside of the scale end cover, etc. There is an inconvenience that it is difficult to take a structure that prevents the ingress of garbage and the like. The present invention has been made in view of such a point,
An object of the present invention is to propose a position detection device that reduces damage to the detection unit at the time of scale overrun.
【０００４】[0004]
【課題を解決するための手段】本発明の位置検出装置は
例えば図１乃至図６に示す如く、位置信号を記録した被
検出手段１０と、被検出手段１０に対向して配置され、
被検出手段１０との相対的移動により位置信号を出力す
る検出手段１１と、被検出手段１０の左右両側端に固定
部２により固定され、固定部２近傍に溝３を設け、検出
手段１１の移動方向の側端面に当接する突起部５を固定
部２から離隔して設けた端部カバー１とからなるもので
ある。As shown in FIGS. 1 to 6, for example, a position detecting apparatus according to the present invention is arranged so as to face a detected means 10 on which a position signal is recorded, and to face the detected means 10.
A detecting means 11 for outputting a position signal by a relative movement with respect to the detected means 10, and a fixing part 2 fixed to both left and right ends of the detected means 10, and a groove 3 provided near the fixing part 2 ; The end cover 1 is provided with a projection 5 that is in contact with the side end face in the moving direction and is separated from the fixing portion 2.
【０００５】また、本発明は、位置信号を記録した被検
出手段１０と、被検出手段１０に対向して配置され、被
検出手段１０との相対的移動により位置信号を出力する
検出手段１１と、被検出手段１０の左右両側端に固定部
２により固定され、固定部２近傍に穴８を設け、検出手
段１１の移動方向の側端面に当接する突起部５を固定部
２から離隔して設けた端部カバー１とからなるものであ
る。The present invention also relates to a detecting means 10 which records a position signal, and a detecting means 11 which is arranged opposite to the detecting means 10 and outputs a position signal by a relative movement with respect to the detecting means 10. A hole 8 is provided in the vicinity of the fixed portion 2 at both left and right ends of the detection means 10, and the projection 5 which contacts the side end surface of the detection means 11 in the moving direction is separated from the fixed portion 2. And the end cover 1 provided.
【０００６】[0006]
【０００７】[0007]
【作用】上述せる本発明によれば、端部カバー１の固定
部２近傍に溝３を設けたので、検出手段１１が端部カバ
ー１の内側から衝突することにより容易に破損する。ま
た本発明によれば、端部カバー１の固定部２近傍に穴８
を設けたので、検出手段１１が端部カバー１の内側から
衝突することにより容易に破損する。According to the present invention described above, since the groove 3 is provided in the vicinity of the fixing portion 2 of the end cover 1, the detection means 11 is easily broken by colliding from the inside of the end cover 1. Further, according to the present invention, the hole 8 is provided near the fixing portion 2 of the end cover 1.
Is provided, the detection means 11 is easily broken by colliding from the inside of the end cover 1.
【０００８】[0008]
【実施例】以下に、図１乃至図６を参照して本発明の位
置検出装置の一実施例について詳細に説明する。図１及
び図２において、磁気記録媒体１０に対向して配置さ
れ、移動可能に設けられた検出部１１には、位置信号を
送出するケーブル１２が取り付けられていて、位置検出
装置の左右両側端部には端部カバー１が設けられてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the position detecting device according to the present invention will be described below in detail with reference to FIGS. In FIGS. 1 and 2, a cable 12 for transmitting a position signal is attached to a movably provided detection unit 11 which is disposed opposite to a magnetic recording medium 10, and is provided on both left and right ends of the position detection device. The part is provided with an end cover 1.
【０００９】図３及び図４において、上述した端部カバ
ー１の構成を詳細に説明する。１は端部カバーであり、
位置検出装置の左右両側端部に設けられるものである。
２は固定穴であり、ネジにより基台に固定可能とするも
のである。３は溝であり、固定穴を挟んで直線上に設け
られている。４は円弧壁であり、５は円弧壁４の上部に
設けられた突起部である。６は防塵壁であり、位置検出
装置の内部にゴミ等が進入するのを防止するものであ
る。７は支持片であり、基台の一部と嵌合可能に設けら
れている。3 and 4, the structure of the above-mentioned end cover 1 will be described in detail. 1 is an end cover,
It is provided at both left and right ends of the position detecting device.
Reference numeral 2 denotes a fixing hole, which can be fixed to the base with screws. Reference numeral 3 denotes a groove, which is provided on a straight line across the fixing hole. Reference numeral 4 denotes an arc wall, and reference numeral 5 denotes a projection provided on an upper portion of the arc wall 4. Reference numeral 6 denotes a dust-proof wall which prevents dust and the like from entering the position detecting device. Reference numeral 7 denotes a support piece, which is provided so as to be fitted to a part of the base.
【００１０】この発明の位置検出装置の一実施例は以上
のように構成され、以下のような作用をする。検出部１
１が左方向にオーバーランすると、左側端部の端部カバ
ー１に衝突する。このとき検出部１１は突起部５に衝突
するので、図２の左端に２点鎖線で示すように端部カバ
ー１は、溝３部分で折れて、外側に曲がるので、検出部
１１を破損することがない。An embodiment of the position detecting device according to the present invention is configured as described above, and operates as follows. Detector 1
When 1 overruns in the left direction, it collides with the left end cover 1. At this time, since the detection unit 11 collides with the protrusion 5, the end cover 1 is broken at the groove 3 and bent outward as shown by a two-dot chain line at the left end of FIG. Nothing.
【００１１】一方、外側から端部カバー１に衝撃が加わ
ったときには、溝３は内側にのみ設けられているので、
剛性が保てる。また、防塵壁６により、位置検出装置内
部にゴミ等が進入するのを防止することが出来る。な
お、端部カバー１はポリカーボネート樹脂等の硬くても
ろく割れやすい材質が好ましい。On the other hand, when an impact is applied to the end cover 1 from the outside, since the groove 3 is provided only inside,
Rigidity can be maintained. Further, the dustproof wall 6 can prevent dust and the like from entering the position detecting device. The end cover 1 is preferably made of a hard but brittle material such as polycarbonate resin.
【００１２】また、上例では、端部カバー１の固定穴２
を挟むようにして溝３を設ける例を示したが、図５に示
すように、端部カバー１の固定穴２を挟むようにして、
直線的に穴８を設けても良い。また、図６に示すよう
に、固定穴２の周囲に円形溝９を設けても良い。In the above example, the fixing hole 2 of the end cover 1 is provided.
Although the example in which the groove 3 is provided so as to sandwich it is shown, as shown in FIG.
The holes 8 may be provided linearly. Further, as shown in FIG. 6, a circular groove 9 may be provided around the fixing hole 2.
【００１３】上例によれば、端部カバー１は固定部２か
ら離隔して突起部５を設けたので、検出部１１が端部カ
バー１の内側から衝突することにより容易に破損する。
また上例によれば、端部カバー１の固定部２近傍に溝３
を設けたので、検出部１１が端部カバー１の内側から衝
突することにより容易に破損する。According to the above example, since the end cover 1 is provided with the projection 5 at a distance from the fixing portion 2, the detection portion 11 is easily damaged by the collision of the detection portion 11 from the inside of the end cover 1.
Further, according to the above example, the groove 3 is formed near the fixing portion 2 of the end cover 1.
Is provided, the detection unit 11 is easily damaged by the collision from the inside of the end cover 1.
【００１４】また上例によれば、端部カバー１の固定部
２近傍に穴８を設けたので、検出部１１が端部カバー１
の内側から衝突することにより容易に破損する。従っ
て、検出部１１の内側からの衝突により端部カバー１が
容易に破損するので、検出部１１の破損を防ぐことが出
来る。Further, according to the above example, since the hole 8 is provided in the vicinity of the fixing portion 2 of the end cover 1, the detecting portion 11 is provided with the end cover 1
It is easily damaged by collision from inside. Therefore, the end cover 1 is easily damaged by a collision from the inside of the detection unit 11, so that the detection unit 11 can be prevented from being damaged.
【００１５】また、上例によれば、検出部１１の破損を
最小限にすることが出来るので、検出部１１の交換を省
くことが出来る。また、上例によれば、破損した端部カ
バー１のみを交換すればよいので、サービス性を向上さ
せることが出来る。Further, according to the above example, since the damage to the detection unit 11 can be minimized, the replacement of the detection unit 11 can be omitted. Further, according to the above example, only the damaged end cover 1 needs to be replaced, so that the serviceability can be improved.
【００１６】また、上例によれば、端部カバー１に防塵
壁６を設けたので、外部からゴミ等が進入するのを防止
することが出来る。Further, according to the above example, since the dust-proof wall 6 is provided on the end cover 1, it is possible to prevent dust and the like from entering from the outside.
【００１７】上例では、位置検出装置の左側端部の端部
カバーの例を示したが、右側端部のカバーについても左
右対称の構造であることはいうまでもない。In the above example, the example of the end cover at the left end of the position detecting device is shown, but it goes without saying that the cover at the right end is also symmetrical.
【００１８】さらに、上例では、端部カバーの固定穴２
の近傍に、溝３、穴８または円形溝９を設ける例を示し
たが、固定穴２近傍に端部カバー１が割れやすい構成を
とるようにすれば良いことはいうまでもない。Further, in the above example, the fixing hole 2 of the end cover is used.
Although the example in which the groove 3, the hole 8 or the circular groove 9 is provided in the vicinity of the above is shown, it is needless to say that the end cover 1 may be easily broken in the vicinity of the fixing hole 2.
【００１９】尚、上述の実施例は本発明の一例であり、
本発明の要旨を逸脱しない範囲でその他様々な構成が取
り得ることは勿論である。The above embodiment is an example of the present invention.
It goes without saying that various other configurations can be adopted without departing from the spirit of the present invention.
【００２０】[0020]
【発明の効果】上述せる本発明によれば、端部カバーの
固定部近傍に溝を設けたので、検出部が端部カバーの内
側から衝突することにより容易に破損する。また本発明
によれば、端部カバーの固定部近傍に穴を設けたので、
検出部が端部カバーの内側から衝突することにより容易
に破損する。従って、検出部の内側からの衝突により端
部カバーが容易に破損するので、検出部の破損を防ぐこ
とが出来る。According to the present invention described above, since the groove is provided in the vicinity of the fixing portion of the end cover, the detection portion is easily damaged by collision from the inside of the end cover. Further, according to the present invention, since the hole is provided in the vicinity of the fixing portion of the end cover,
The detector is easily damaged by colliding from the inside of the end cover. Therefore, the end cover is easily damaged by a collision from the inside of the detection unit, so that damage to the detection unit can be prevented.
【図１】本発明の位置検出装置の一実施例の一部省略し
た平面図である。FIG. 1 is a partially omitted plan view of an embodiment of a position detecting device according to the present invention.
【図２】本発明の位置検出装置の一実施例の一部省略し
た側面図である。FIG. 2 is a partially omitted side view of an embodiment of the position detecting device of the present invention.
【図３】本発明の位置検出装置の一実施例の端部カバー
の平面図である。FIG. 3 is a plan view of an end cover of the position detecting device according to one embodiment of the present invention.
【図４】本発明の位置検出装置の一実施例の端部カバー
の斜視図である。FIG. 4 is a perspective view of an end cover of the position detecting device according to one embodiment of the present invention.
【図５】本発明の位置検出装置の他の実施例の端部カバ
ーの平面図である。FIG. 5 is a plan view of an end cover of another embodiment of the position detecting device of the present invention.
【図６】本発明の位置検出装置の他の実施例の端部カバ
ーの平面図である。FIG. 6 is a plan view of an end cover of another embodiment of the position detecting device of the present invention.
１ 端部カバー ２ 固定穴 ３ 溝 ４ 円弧壁 ５ 突起部 ６ 防塵壁 ７ 支持片 ８ 穴 ９ 円形溝 １０ 磁気記録媒体 １１ 検出部 １２ ケーブル DESCRIPTION OF SYMBOLS 1 End cover 2 Fixing hole 3 Groove 4 Arc wall 5 Projection 6 Dustproof wall 7 Supporting piece 8 Hole 9 Circular groove 10 Magnetic recording medium 11 Detector 12 Cable
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01B 21/00 - 21/32 G12B 1/00 - 17/08 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) G01B 21/00-21/32 G12B 1/00-17/08
Claims (2)
被検出手段に対向して配置され、前記被検出手段との相
対的移動により前記位置信号を出力する検出手段と、前
記被検出手段の左右両側端に固定部により固定され、前
記固定部近傍に溝を設け、前記検出手段の移動方向の側
端面に当接する突起部を前記固定部から離隔して設けた
端部カバーとからなることを特徴とする位置検出装置。A detection unit that records a position signal; a detection unit that is disposed to face the detection unit and outputs the position signal by a relative movement with respect to the detection unit; is fixed by the fixing unit on the left and right side ends, before
A position detecting device , comprising: a groove provided in the vicinity of the fixing portion, and an end cover provided with a protruding portion abutting on a side end surface in the moving direction of the detection means, separated from the fixing portion.
被検出手段に対向して配置され、前記被検出手段との相
対的移動により前記位置信号を出力する検出手段と、前
記被検出手段の左右両側端に固定部により固定され、前
記固定部近傍に穴を設け、前記検出手段の移動方向の側
端面に当接する突起部を前記固定部から離隔して設けた
端部カバーとからなることを特徴とする位置検出装置。2. A detecting means which records a position signal, a detecting means which is arranged to face the detecting means and outputs the position signal by a relative movement with respect to the detecting means, and a detecting means. is fixed by the fixing unit on the left and right side ends, before
A position detecting device , comprising: a hole provided in the vicinity of the fixing portion; and an end cover provided with a projection abutting on a side end surface of the detecting means in the moving direction, separated from the fixing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05006867A JP3089874B2 (en) | 1993-01-19 | 1993-01-19 | Position detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05006867A JP3089874B2 (en) | 1993-01-19 | 1993-01-19 | Position detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06213651A JPH06213651A (en) | 1994-08-05 |
| JP3089874B2 true JP3089874B2 (en) | 2000-09-18 |
Family
ID=11650195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05006867A Expired - Fee Related JP3089874B2 (en) | 1993-01-19 | 1993-01-19 | Position detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3089874B2 (en) |
-
1993
- 1993-01-19 JP JP05006867A patent/JP3089874B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06213651A (en) | 1994-08-05 |
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