CN1261954A - 带压力套管的振动接收器 - Google Patents
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- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
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- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
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Abstract
提出了一种带有压力套管的振动接收器,其中压力套管通过一个固定件间接或直接地紧固在产生振动的构件上。传感器元件(6)在轴向偏压的作用下径向外部固定在压力套管(2)上,并可通过接触片(5、7)和连接片(11)电接触。接触片(5、7)中至少一个呈盘簧状,位于传感器元件(6)与轴向相邻的元件之间,以产生轴向偏压。为固定传感器元件(6),振动质块(16)可直接备有内螺纹(17)。接触片(5、7)可与电接头(11)制成一体。
Description
现有技术
本发明涉及一种带压力套管的振动接收器，其类别见独立权利要求。
在DE-OS 44 03 660中已经描述了一种带压力套管的振动接收器。其作为爆震传感器，用于监视汽车内燃机的工作状态。该压力套管通过一个支承区固定于产生振动的构件上，这里安装在发动机气缸体上。受检测的振动是内燃机工作时的爆震噪声，其通过压力套管传递到作为传感器元件的压电陶瓷片上，以便转换成可以计算处理的电输出信号。
这里，传感器元件在压力套管上的安装或固定方式，以及压力套管在振动构件上的固定方式，对制造方式有很大的影响。在这种已知的振动接收器中，传感器元件连同多个构件，例如弹簧、振动质量块的固定是通过相当繁琐的制造工序来完成的。
本发明的优点
根据本发明的上述型式的振动接收器具有权利要求1的特征，其优点特别在于，当把各个构件组装在一起以固定传感器元件时，不需再使用一个独立的盘簧来产生轴向的偏压。这是由于接触片已经呈盘簧状，因而不必单独制造和安装一盘簧了，其中该接触片靠置在压电陶瓷传感器元件的轴向平面上，用于产生电接触。
接触片可以简单的方式这样从板件冲压出来，即使接触片沿径向拱起或者倾斜或具有坡度，以产生弹性效果。冲压时，有利的是同时在接触片上成形一用于连接导线的插头。由此该插头从开始就与该接触片是一个整体，因而又可以省掉实现这些元件电连接的繁琐的组装工序。
因此根据本发明的振动接收器可以在较少的组装工序中由数量较少的元件制得，从而用于安装盘簧的特殊工具和可能出现的单独锡焊或焊接的接触插头也成为多余的。这样，不仅节省了制造成本和制造时间，而且制造的可靠性也因结构的简化而提高了。
在另一种优选实施方案中，还可省掉用于固定振动质量块的单独的螺纹环或其它固定装置。这里，振动质块加工成本身带有内螺纹并可能带有外六角，使得由此能够实现自身固定。由此，在达到较高制造质量和制造可靠性的同时，可进一步减少元件的数量、缩短制造周期和减轻重量。
在从属权利要求中给出了其它优选实施方案。
附图
以下借助附图对根据本发明带有压力套管的振动接收器实施例予以说明。其中：
图1所示为带有一盘簧形接触片的作为振动接收器的爆震传感器外壳剖面；
图2为图1中的接触片的剖面；
图3为图1中的接触片的俯视图；
图4为爆震传感器的剖面，该传感器有一带内螺纹的振动质块。
实施例说明
图1中示出了作为振动接收器的内燃机用爆震传感器，其带有一个塑料外壳1，外壳内安装有压力套管2，该压力套管以其底面3安置在这里未示出的发动机气缸体上，发动机气缸体的振动是要被检测的。在压力套管2的外周上，从下往上安装着下列元件：绝缘片4、第一接触片5、作为传感器元件的压电陶瓷片6，再往上又是第二接触片7以及第二绝缘片4。在该结构上放置有振动质块8，其被环9压向压电陶瓷片6，其中环9可用螺纹拧紧或用其它方式固定。
在特别用塑料压注法制造的外壳1的整体连接元件10中，铸有接触片5用的电接头11。这里，电接头11与各自的接触片5或7制成一体。这样，通过这两个接触片5和7与压电陶瓷片6的两侧形成电连通。从接头11上可以获得一个电压，该电压是由压电陶瓷片6受压应力作用而产生的。
压力套管2中有一个中心空隙或孔12，其中插入一个图中未示出的固定螺栓，通过该固定螺栓噪音传感器直接或间接地整体固定于内燃机发动机气缸体上。
借助图2和图3示例性地示出了第二接触片7，其也适用第一接触片5。接触片7与接触片5一样，也有一个径向坡度13，其作用是使得每个接触片5或7仅以其径向的内侧或外侧靠置在压电陶瓷片6上，并与此相对应，其另一侧靠置对面的绝缘片4上。接触片5和7各自具有预紧弹簧作用，安装在这些元件之间。从图3中可以看到，接触片7是这样用板材冲压出来的，即应形成一个与接触片7一体的桥接片14，桥接片端部具有通过折叠上另一薄板部分而形成的插头形的加厚部分15，该部分的作用是作为插头形接头(11)。接触片5以同样的方法制成，并具有相应的尺寸合适的桥接片14。
在装配爆震传感器时，由上述往发动机气缸体上安装用的固定螺栓产生的全部扭矩都通过底面3传递到压力套管2上，也就是说，固定时，没有任何力会作用在作为传感器元件的压电陶瓷片6上。
这里，安装环9时，通过压盘簧形接触片5和7形成偏压。该偏压是这样选择的，即使得在压电陶瓷片6上作用的轴向力刚好不会使电信号发生永久性的恶化，并且偏压尽可能与热膨胀以及安装时不可避免地发生的压力套管2的压缩无关。由振动质块8产生的与内燃机振动成正比的冲量在压电陶瓷片6中转化成电压脉冲，该脉冲可用相应的测量仪器读出。
在根据图4的实施例中，与借助图1至图3描述的构件功能相同构件具有相同的标记。图4中的振动质块16具有内螺纹17，通过该内螺纹质块16可直接拧在压力套管2上，从而将传感器元件6安装在弹性接触片5和7之间。为了简化装配，振动质块16的外侧可做成六角形。在该实施例中，接触片5和7被构造为相同，并且相互对称布置。由此进一步简化制造过程。
Claims (10)
1、带有压力套管的振动接收器，其中
- 压力套管(2)通过一个固定件间接或直接地安装固定在产生振动的构件上，并带有
- 一个传感器元件(6)，其在轴向偏压的作用下径向外部固定在压力套管(2)上，并可通过接触片(5，7)和连接元件(11)电接触，其特征为，
- 接触片(5、7)中至少一个是带有径向坡度(13)的薄板件，使得该至少一个接触片(5、7)呈盘簧形，位于传感器元件(6)与轴向相邻的元件之间，以产生轴向偏压。
2、根据权利要求1的振动接收器，其特征为，
- 该至少一个接触片(5、7)是用薄板冲压出来的，并在冲压过程中制出径向坡度(13)。
3、根据权利要求2的振动接收器，其特征为，
- 该至少一个接触片(5、7)与桥接片(14)用薄板一体冲压出来，其中桥接片(14)在其背离各自接触片(5、7)的端部具有一加厚部分(15)，该加厚部分的功能是作为插头形接头(11)。
4、根据权利要求3的振动接收器，其特征为，
- 加厚部分可通过折叠薄片部分制得。
5、根据权利要求3或4之一的振动接收器，其特征为，
- 两个接触片(5、7)被构造为相同，并且这样相互对称布置，即使得桥接片(15)处于相同高度上。
6、根据权利要求1至5之一的振动接收器，其特征为，
- 压力套管(2)用钢制造。
7、根据权利要求1至5之一的振动接收器，其特征为，
- 压力套管(2)用黄铜制造。
8、根据权利要求1至5之一的振动接收器，其特征为，
- 压力套管(2)用铝制造。
9、根据上述权利要求之一的振动接收器，其特征为，
- 振动质块(16)备有内螺纹(17)，并可直接拧到压力套管(2)上以固定传感器元件(6)。
10、根据上述权利要求之一作为爆震传感器的振动接收器，其特征为，
- 产生振动的构件是汽车中内燃机的发动机气缸体。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19727703A DE19727703A1 (de) | 1997-06-30 | 1997-06-30 | Schwingungsaufnehmer mit Druckhülse |
| DE19727703.9 | 1997-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1261954A true CN1261954A (zh) | 2000-08-02 |
| CN1141566C CN1141566C (zh) | 2004-03-10 |
Family
ID=7834056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB98806815XA Expired - Fee Related CN1141566C (zh) | 1997-06-30 | 1998-01-14 | 带压力套管的振动接收器 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6279381B1 (zh) |
| EP (1) | EP0993596B1 (zh) |
| KR (1) | KR100511147B1 (zh) |
| CN (1) | CN1141566C (zh) |
| DE (2) | DE19727703A1 (zh) |
| HK (1) | HK1027157A1 (zh) |
| WO (1) | WO1999001732A1 (zh) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303409C (zh) * | 2003-03-26 | 2007-03-07 | 三菱电机株式会社 | 内燃机用爆震传感器的安装结构及内燃机用爆震传感器 |
| CN105339768A (zh) * | 2013-06-25 | 2016-02-17 | 日本特殊陶业株式会社 | 爆震传感器 |
| CN105823595A (zh) * | 2015-01-28 | 2016-08-03 | 罗伯特·博世有限公司 | 用于接收引起振动的构件的振动的振动接收器 |
| CN107110732A (zh) * | 2015-01-09 | 2017-08-29 | 罗伯特·博世有限公司 | 用于接收引起振动的构件的振动的振动接收装置 |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19960328B4 (de) * | 1999-12-15 | 2008-05-15 | Robert Bosch Gmbh | Schwingungsaufnehmer mit einer Druckhülse |
| DE19960325B4 (de) * | 1999-12-15 | 2008-04-30 | Robert Bosch Gmbh | Schwingungsaufnehmer mit einer Druckhülse |
| DE19960324A1 (de) * | 1999-12-15 | 2001-06-21 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
| DE10044478C2 (de) * | 2000-09-08 | 2002-11-28 | Bosch Gmbh Robert | Schwingungsaufnehmer bzw. Isolierscheibe für einen Schwingungsaufnehmer |
| US6779381B2 (en) * | 2001-07-06 | 2004-08-24 | Delphi Technologies, Inc. | Threadless knock sensor |
| US6752005B2 (en) * | 2002-04-26 | 2004-06-22 | Ngk Spark Plug Co., Ltd. | Nonresonant type knock sensor |
| FR2855265B1 (fr) * | 2003-05-23 | 2006-01-21 | Siemens Vdo Automotive | Connecteur etanche pour capteur de pression de moteur a combustion interne |
| US6776026B1 (en) * | 2003-06-09 | 2004-08-17 | Delphi Technologies, Inc. | Knock sensor |
| JP4222196B2 (ja) * | 2003-12-01 | 2009-02-12 | 株式会社デンソー | 電気回路機器の破壊防止構造 |
| JP4138696B2 (ja) * | 2004-04-20 | 2008-08-27 | 三菱電機株式会社 | ノックセンサ |
| JP4053514B2 (ja) * | 2004-05-26 | 2008-02-27 | 三菱電機株式会社 | 内燃機関のノッキングセンサおよびその製造方法 |
| JP2006090865A (ja) * | 2004-09-24 | 2006-04-06 | Ngk Spark Plug Co Ltd | 非共振型ノッキングセンサ |
| JP4121092B2 (ja) * | 2005-11-22 | 2008-07-16 | 三菱電機株式会社 | ノックセンサ |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164921A (ja) | 1983-03-09 | 1984-09-18 | Nippon Soken Inc | 内燃機関用ノツキング検出器 |
| DE4011910A1 (de) | 1990-04-12 | 1991-10-17 | Busch Dieter & Co Prueftech | Vorrichtung und verfahren zur beschleunigungsmessung durch piezo-elektrische umformer |
| DE4123786A1 (de) * | 1991-07-18 | 1993-01-21 | Bosch Gmbh Robert | Klopfsensor |
| DE4403660B4 (de) | 1993-04-10 | 2006-08-10 | Robert Bosch Gmbh | Druckhülse |
| DE19612540B4 (de) | 1995-07-03 | 2004-04-22 | Robert Bosch Gmbh | Schwingungsaufnehmer mit Druckhülse |
| CZ194096A3 (cs) * | 1995-07-03 | 1998-09-16 | Robert Bosch Gmbh | Snímač kmitání s přítlačným pouzdrem |
| JP3516577B2 (ja) * | 1996-11-21 | 2004-04-05 | 日本特殊陶業株式会社 | ノッキング検出センサ |
-
1997
- 1997-06-30 DE DE19727703A patent/DE19727703A1/de not_active Withdrawn
-
1998
- 1998-01-14 CN CNB98806815XA patent/CN1141566C/zh not_active Expired - Fee Related
- 1998-01-14 WO PCT/DE1998/000110 patent/WO1999001732A1/de active IP Right Grant
- 1998-01-14 DE DE59806203T patent/DE59806203D1/de not_active Expired - Lifetime
- 1998-01-14 KR KR10-1999-7011591A patent/KR100511147B1/ko not_active IP Right Cessation
- 1998-01-14 US US09/446,284 patent/US6279381B1/en not_active Expired - Lifetime
- 1998-01-14 EP EP98905257A patent/EP0993596B1/de not_active Expired - Lifetime
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2000
- 2000-10-03 HK HK00106268A patent/HK1027157A1/xx not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303409C (zh) * | 2003-03-26 | 2007-03-07 | 三菱电机株式会社 | 内燃机用爆震传感器的安装结构及内燃机用爆震传感器 |
| CN105339768A (zh) * | 2013-06-25 | 2016-02-17 | 日本特殊陶业株式会社 | 爆震传感器 |
| US10094727B2 (en) | 2013-06-25 | 2018-10-09 | Ngk Spark Plug Co., Ltd. | Knocking sensor |
| CN107110732A (zh) * | 2015-01-09 | 2017-08-29 | 罗伯特·博世有限公司 | 用于接收引起振动的构件的振动的振动接收装置 |
| CN105823595A (zh) * | 2015-01-28 | 2016-08-03 | 罗伯特·博世有限公司 | 用于接收引起振动的构件的振动的振动接收器 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1141566C (zh) | 2004-03-10 |
| WO1999001732A1 (de) | 1999-01-14 |
| EP0993596A1 (de) | 2000-04-19 |
| KR100511147B1 (ko) | 2005-08-31 |
| EP0993596B1 (de) | 2002-11-06 |
| DE19727703A1 (de) | 1999-01-14 |
| US6279381B1 (en) | 2001-08-28 |
| DE59806203D1 (de) | 2002-12-12 |
| KR20010013584A (ko) | 2001-02-26 |
| HK1027157A1 (en) | 2001-01-05 |
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