CN1330942C - 位置测量装置 - Google Patents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/264—Mechanical constructional elements therefor ; Mechanical adjustment thereof
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
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Abstract
一种位置测量装置,一个屏蔽电缆(8)从检测装置(5)穿过外壳(9)的一个开孔(10)引到外边。该电缆(8)的固定以及电缆(8)屏蔽(8.1)在外壳(9)上的接触通过外壳(9)壁板(9.1)的塑性变形实现。
Description
技术领域
本发明涉及一种位置测量装置。
背景技术
这种位置测量装置用于测量一个移动结构部件的行程和角度。为了获得结构部件的移动在一个外壳的保护下设置一个检测装置。通过电缆将与位置相关的电测量信号从外壳内部空间引到外部并传导到一个用于处理检测值的后续电路。
由DE 195 43 372 A1已知这样一种角度测量装置形式的位置测量装置。围绕电缆屏蔽层卷绕一个护套,护套作用于一个配合体并由此构成一个用于电缆的去张力。护套和配合体由一个盖板遮盖。
这种装置的缺陷是围绕屏蔽层要求一个护套以及电缆通过孔缺少密封性。
发明内容
本发明的目的是,提出一种位置测量装置,其中一个被屏蔽的电缆特别简单地固定在位置测量装置的一个外壳上。
这个目的通过本发明的位置测量装置得以实现,该位置测量装置具有一个导电的外壳;一个设置在外壳里面的装置,用于获得测量值和/或处理测量值并通过一个电缆的信号导线输出一个与位置相关的测量信号,所述电缆具有包围信号导线的屏蔽;一个位于外壳的壁板中的开孔,用于穿过电缆,其中,所述外壳本身的壁板的塑性变形,用于将电缆固定在开孔里面并用于将屏蔽连接到外壳上,从而屏蔽在开孔中与外壳导电接触。
屏蔽的电缆透穿外壳壁的开孔,通过壁板的变形或挤压使该开孔变小,由此将电缆固定在开孔里面。
按照一个有利的实施例,所述屏蔽层在电缆外皮上回翻并且变形具有一个第一区段,在该区段在外壳的变形壁板与外壳之间没有屏蔽层并且变形具有一个第二区段,在该区段外壳的变形壁板接触包络的屏蔽层。
通过第一区段建立电缆通过孔的密封性而通过第二区段保证屏蔽连接到导电的外壳上,这是有利的。
通过本发明能够将电缆简单且节省空间地屏蔽连接到位置测量装置的外壳上。
附图说明
下面借助于附图详细描述本发明的实施方式。附图中:
图1以沿着角度测量装置轴线的横截面图示出一个角度测量装置;
图2示出电缆通过孔处的角度测量装置的横截面图;
图3示出图2中角度测量装置外壳的I-I截面图;
图4示出图3中外壳的II-II截面图;
图5示出第二角度测量装置外壳的截面图;
图6示出第三角度测量装置外壳的截面图。
具体实施方式
在附图中所示和示例性描述的位置测量装置都是角度测量装置。这些角度测量装置具有一个用于连接到被测物体上的轴1。该轴1可旋转地支承在一个基体2上,也称为定子或法兰。为了测量角度该轴1例如与一个电机轴连接而基体2与相对于基体静止的电机外壳连接。
在轴1上扭转刚性地设置一个编码盘,它具有微差和/或绝对编码,编码盘可以被光电地、电磁地、电容地或电感地扫描。在所示实施例中所述编码盘3被光电地扫描。为此使用一个光源4,它发射出一个光束,该光束被编码盘3根据位置进行调制。经调制的光到达一个检测装置5,该检测装置设置在一个电路板6上。此外一个插连接7的静止部件7.1位于电路板6上。这个插连接7的对应部件7.2固定在向外输出的电缆8上。
一个圆柱形或钵形的端面封闭外壳9用于保护检测装置5,它通过圆周固定在基体2上。电磁干扰辐射防护由此得到保证,即,所述外壳9由导电材料构成并与导电基体2处于导通。所述外壳9和基体2以电缆8屏蔽层8.1的形式与基准电位连接用于导出电荷。这个连接在图2至4中详细描述。
在外壳9的端面壁板上设置一个垂直于轴线A延伸的孔10。围绕电缆8的信号导线8.2设置一个屏蔽层8.1形式的金属屏蔽并且一个由塑料制成的外皮8.3围绕屏蔽层8.1。所述屏蔽层8.1在一个短的长度上裸露并且该裸露段外皮8.3在外圆周上向后回翻或向后叠堆。这样选择用于容纳电缆8的开孔10长度,使得在其长度段上从外部向着外壳内部空间延伸地具有一个第一区段L1,电缆8的没有回翻的屏蔽层8.1部位位于这个第一区段里面并且具有接着的第二区段L2,具有回翻到外皮8.3上的电缆8屏蔽层8.1的部位位于这个区段里面。
通过塑性变形、外壳9壁板9.1的挤压或者说顶压11使开孔10在两个区段L1,L2里面的直径缩小,由此使电缆8通过形状配合连接抗拉地固定在外壳9的开孔10里面。第一区段L1保证密封地封闭,因为外壳9的壁板9.1在整个圆周上直接接触电缆8的弹性外皮8.3并由此可靠地密封开孔。第二区段L2保证屏蔽层8.1与外壳9可靠地电接触并由此使外壳屏蔽电磁干扰辐射。防止信号导线8.2的损伤,因为通过外皮8.3的塑性变形承担壁板9.1在这两个区段里的变形。
为了简化电缆8在变形前在开孔10中的装配和可靠定位在开孔10中,设置一个台阶12作为外皮8.3端部的止挡,如图3所示。
此外如在图3和4中特别清晰地看出的那样,具有开孔10的端部壁板9.1厚于外壳9的其余壁板。变形部位11在一侧通过一个半园形状的卷边实现,以实现良好的材料流程。为了改进材料流程变形部位11还在开孔10的纵向上在起点和终点上分别具有一个止挡。
当电缆8的外皮外径为约6mm时变形部位11的长度为约9mm,其中第一区段L1长约6mm而第二区段L2长约3mm。
外壳9由导电材料、尤其是铝或铝合金在冲挤或压铸工艺中制成。开孔10在冲挤工艺中是事后通过切削加工出来的孔而在压铸工艺中可以在模型中成形。
在图5中示出角度测量装置的一个变化实施例。与图1至4中的第一角度测量装置不同的是对于这个第二角度测量装置在电缆8外皮8.3与外壳9之间附加地加入粘接材料13。这个粘接材料13有利地在电缆8的整个圆周上位于开孔10里面并保证更好的密封。
在图6中示出角度测量装置的另一变型。与图1至4中的第一角度测量装置不同的是对于这个第三角度测量装置,在电缆8外皮8.3与外壳9之间例如存在一个橡胶管形状的弹性中间层14。这个中间层14被推到外皮8.3上并部分地推到翻回的屏蔽8.1。这种中间层14的优点是,通过适当选择中间层14材料保证弹性变形并由此保证良好的密封性。因此使密封性不仅仅取决于电缆8外皮8.3的变形性。
在所有的实施例中也可以实现电缆10的轴线延伸取代所示电缆8的径向延伸,在外壳的一个侧壁上加厚并在这个材料加厚部加入一个轴向延伸的开孔用于容纳和固定电缆。所详尽描述的和可选择的实施例具有节省空间和不加大外壳径向圆周结构的优点,这尤其对于将角度测量装置装进电机外壳管状内部空间是有利的。
所述外壳也可以是长度测量装置扫描装置的组成部分。在此所述外壳可以遮盖一个用于获得测量值的装置,该装置是一个检测装置或者是一个用于处理外设检测装置的扫描信号的计算装置。
Claims (7)
1.一种位置测量装置,具有
一个导电的外壳(9);
一个设置在外壳(9)里面的装置(5),用于获得测量值和/或处理测量值并通过一个电缆(8)的信号导线(8.2)输出一个与位置相关的测量信号,所述电缆具有包围信号导线(8.2)的屏蔽(8.1)一个包围所述屏蔽(8.1)的外皮(8.3);
一个位于外壳(9)的壁板(9.1)中的开孔(10),用于穿过电缆(8),其特征在于,
所述外壳(9)本身的壁板(9.1)的塑性变形,用于将电缆(8)固定在开孔(10)里面并用于将屏蔽(8.1)连接到外壳(9)上,从而屏蔽(8.1)在开孔(10)中与外壳(9)导电接触,其中
所述变形(11)在其长度上从外面向着外壳(9)内部空间延伸地具有一个第一区段(L1),在该区段外壳(9)的壁板(9.1)不与屏蔽(8.1)接触并且接着具有一个第二区段(L2),在该区段外壳(9)的壁板(9.1)接触屏蔽(8.1)。
2.如权利要求1所述的位置测量装置,其特征在于,在第一区段(L1)中所述外壳(9)的壁板(9.1)在整个圆周上直接接触和包围外皮(8.3)。
3.如权利要求2所述的位置测量装置,其特征在于,在第二区段(L2)中屏蔽(8.1)回翻到外皮(8.3)上。
4.如权利要求1所述的位置测量装置,其特征在于,在开孔(10)中在外皮(8.3)与外壳(9)之间具有一个弹性中间层(14),其中在第一区段(L1)中所述外壳(9)的壁板(9.1)在整个圆周上直接接触和包围中间层(14)而在第二区段(L2)中屏蔽(8.1)回翻到中间层(14)上。
5.如权利要求1所述的位置测量装置,其特征在于,所述外壳(9)圆柱形地带有一个端面壁板(9.1)并包括一个用于角度测量的编码盘(3)和一个扫描编码盘(3)的检测装置(5)。
6.如权利要求5所述的位置测量装置,其特征在于,所述开孔(10)垂直于外壳(9)的纵轴线(A)延伸并设置在外壳(9)的一个端面壁板(9.1)中。
7.如权利要求6所述的位置测量装置,其特征在于,所述端面壁板(9.1)在开孔(10)处具有壁板本身的一个材料加厚部。
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Application Number | Priority Date | Filing Date | Title |
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DE10316870.2 | 2003-04-11 | ||
DE10316870A DE10316870A1 (de) | 2003-04-11 | 2003-04-11 | Positionsmesseinrichtung |
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CN1330942C true CN1330942C (zh) | 2007-08-08 |
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US (1) | US7316071B2 (zh) |
EP (1) | EP1467187B1 (zh) |
JP (1) | JP4402985B2 (zh) |
CN (1) | CN1330942C (zh) |
AT (1) | ATE408805T1 (zh) |
DE (2) | DE10316870A1 (zh) |
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JP4241012B2 (ja) * | 2002-11-25 | 2009-03-18 | パナソニック株式会社 | 回転角度検出装置 |
EP1528369B1 (de) * | 2003-10-27 | 2014-03-12 | SICK STEGMANN GmbH | Optischer Drehwinkelsensor |
DE502006000758D1 (de) * | 2005-03-16 | 2008-06-26 | Busch Dieter & Co Prueftech | Schwingungssensor oder Meßaufnehmer |
DE202005006379U1 (de) * | 2005-04-21 | 2006-08-24 | Hengstler Gmbh | Hohlwellen-Drehgeber mit Motorwellen-Schutzkappe |
JP2007147381A (ja) * | 2005-11-25 | 2007-06-14 | Ntn Corp | 回転角検出センサ |
EP1960733A1 (de) | 2005-12-11 | 2008-08-27 | Valeo Schalter und Sensoren GmbH | Drehwinkelsensor und drehwinkelsensorsystem |
US20080018675A1 (en) * | 2006-07-22 | 2008-01-24 | Aubrey Dare Westmoreland | Mimic gauge for a chart recorder |
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DE102007026498A1 (de) * | 2007-06-05 | 2008-12-11 | Endress + Hauser Wetzer Gmbh + Co Kg | Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße |
DE102007036484B3 (de) * | 2007-08-01 | 2009-02-05 | Endress + Hauser Wetzer Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung der Temperatur |
DE102008008278A1 (de) * | 2008-02-07 | 2009-08-13 | Dr. Johannes Heidenhain Gmbh | Winkelmesseinrichtung |
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JP5883637B2 (ja) * | 2011-05-23 | 2016-03-15 | 株式会社ショーワ | 相対角度検出装置および電動パワーステアリング装置 |
DE202011051839U1 (de) * | 2011-11-02 | 2013-02-04 | Weidmüller Interface GmbH & Co. KG | Wanddurchführung mit einem Steckverbinder |
DE102012101962A1 (de) * | 2012-03-08 | 2013-09-12 | Hella Kgaa Hueck & Co. | Niveausensor |
DE102012106021A1 (de) * | 2012-07-05 | 2014-05-08 | Hella Kgaa Hueck & Co. | Niveausensor |
DE102013013960C5 (de) * | 2013-08-23 | 2020-04-16 | Baumer Electric Ag | Sensorgehäuse für einen kabelgebundenen Sensor und kabelgebundener Sensor |
JP7083228B2 (ja) * | 2013-10-01 | 2022-06-10 | レニショウ パブリック リミテッド カンパニー | 電子機器 |
EP3399284B1 (de) * | 2017-05-03 | 2019-07-10 | Dr. Johannes Heidenhain GmbH | Sensoreinheit zur positionsmessung |
JP7225640B2 (ja) * | 2018-09-27 | 2023-02-21 | セイコーエプソン株式会社 | エンコーダー、駆動部、及びロボット |
JP7187933B2 (ja) * | 2018-09-27 | 2022-12-13 | セイコーエプソン株式会社 | エンコーダー、駆動部、及びロボット |
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US4495700A (en) * | 1982-02-26 | 1985-01-29 | Johannes Heidenhain Gmbh | Apparatus for measuring the angular displacement of two objects relative to each other |
US4922069A (en) * | 1988-09-07 | 1990-05-01 | Aircap Industries Corporation | Electrical control switch mechanism |
DE4241020A1 (de) * | 1992-12-05 | 1994-06-09 | Bosch Gmbh Robert | Drehsteller für Drosselklappe |
DE19523795C1 (de) * | 1995-06-29 | 1996-12-19 | Siemens Ag | Kabeldurchführung für ein geschirmtes Schaltkabel |
DE19543372A1 (de) * | 1995-11-21 | 1997-05-22 | Heidenhain Gmbh Dr Johannes | Winkelmeßeinrichtung |
US5657544A (en) * | 1995-09-26 | 1997-08-19 | Ntn Corporation | Device for detecting the angle of rotation |
US6257907B1 (en) * | 1999-03-24 | 2001-07-10 | Dr. Johannes Heidenhain Gmbh | Angular position encoder |
US6531880B1 (en) * | 2000-07-03 | 2003-03-11 | American Electric Power Company, Inc. | Non-invasive cable tester |
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JP3942801B2 (ja) * | 2000-04-28 | 2007-07-11 | Ntn株式会社 | 回転角検出センサ |
DE10031302A1 (de) * | 2000-06-27 | 2002-01-10 | Heidenhain Gmbh Dr Johannes | Winkelmeßrichtung |
US20030019113A1 (en) * | 2001-07-26 | 2003-01-30 | Valeo Schalter Und Sensoren Gmbh | Steering column module with steering angle sensor having low sensitivity to steering column radial run-out |
US7044795B2 (en) * | 2003-04-01 | 2006-05-16 | Hamilton Sundstrand | Miniature, shielded electrical connector with strain relief |
-
2003
- 2003-04-11 DE DE10316870A patent/DE10316870A1/de not_active Withdrawn
-
2004
- 2004-02-13 EP EP04003235A patent/EP1467187B1/de not_active Revoked
- 2004-02-13 DE DE502004008067T patent/DE502004008067D1/de not_active Revoked
- 2004-02-13 AT AT04003235T patent/ATE408805T1/de active
- 2004-03-09 JP JP2004065368A patent/JP4402985B2/ja not_active Expired - Fee Related
- 2004-04-09 US US10/821,628 patent/US7316071B2/en not_active Expired - Fee Related
- 2004-04-09 CN CNB2004100334526A patent/CN1330942C/zh not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4495700A (en) * | 1982-02-26 | 1985-01-29 | Johannes Heidenhain Gmbh | Apparatus for measuring the angular displacement of two objects relative to each other |
US4922069A (en) * | 1988-09-07 | 1990-05-01 | Aircap Industries Corporation | Electrical control switch mechanism |
DE4241020A1 (de) * | 1992-12-05 | 1994-06-09 | Bosch Gmbh Robert | Drehsteller für Drosselklappe |
DE19523795C1 (de) * | 1995-06-29 | 1996-12-19 | Siemens Ag | Kabeldurchführung für ein geschirmtes Schaltkabel |
US5657544A (en) * | 1995-09-26 | 1997-08-19 | Ntn Corporation | Device for detecting the angle of rotation |
DE19543372A1 (de) * | 1995-11-21 | 1997-05-22 | Heidenhain Gmbh Dr Johannes | Winkelmeßeinrichtung |
US6257907B1 (en) * | 1999-03-24 | 2001-07-10 | Dr. Johannes Heidenhain Gmbh | Angular position encoder |
US6531880B1 (en) * | 2000-07-03 | 2003-03-11 | American Electric Power Company, Inc. | Non-invasive cable tester |
Also Published As
Publication number | Publication date |
---|---|
CN1536339A (zh) | 2004-10-13 |
US7316071B2 (en) | 2008-01-08 |
JP4402985B2 (ja) | 2010-01-20 |
EP1467187A2 (de) | 2004-10-13 |
EP1467187B1 (de) | 2008-09-17 |
ATE408805T1 (de) | 2008-10-15 |
DE502004008067D1 (de) | 2008-10-30 |
EP1467187A3 (de) | 2005-12-21 |
DE10316870A1 (de) | 2004-10-21 |
US20040244210A1 (en) | 2004-12-09 |
JP2004317494A (ja) | 2004-11-11 |
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