CN1110695C - 压力套筒 - Google Patents
压力套筒 Download PDFInfo
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- CN1110695C CN1110695C CN96110784A CN96110784A CN1110695C CN 1110695 C CN1110695 C CN 1110695C CN 96110784 A CN96110784 A CN 96110784A CN 96110784 A CN96110784 A CN 96110784A CN 1110695 C CN1110695 C CN 1110695C
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- 239000000463 material Substances 0.000 claims abstract description 4
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- 238000001514 detection method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
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- 239000010959 steel Substances 0.000 claims description 3
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- KRPAJLYSLFNDOA-UHFFFAOYSA-N mephenesin carbamate Chemical compound CC1=CC=CC=C1OCC(O)COC(N)=O KRPAJLYSLFNDOA-UHFFFAOYSA-N 0.000 description 1
- 229950006838 mephenesin carbamate Drugs 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- 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
- G01L23/22—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 for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—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 for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/222—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 for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using piezoelectric devices
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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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
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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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measuring Fluid Pressure (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
本发明提供了一种压力套筒，特别是用于一种振动传感器的压力套筒，其具支承面有一间接或直接固定件，该固定件穿过压力套筒(2)中的一中心掏空部分(12)，支承面使压力套筒(2)的一支承面(3)支撑在一振动产生部件(例如内燃机的外壳)上。支承面检测部件(6)，特别是一压电陶瓷片在一轴向预应力的作用下保持在压力套筒(2)支承面的径向外侧。弹簧的止挡件由压力套筒(2)的外圆周上形成的至少两个拱形块(20)，支承面最好五个拱形块构成，这些拱形块通过压力套筒(2)的(金属)材料的支承制成。
Description
技术领域
本发明涉及一种主权利要求所述类型的压力套筒，特别是用于一种振动传感器的压力套筒。
背景技术
DE-0S 44 03 660公开了一种压力套筒，它用于内燃机的爆燃传感器。这种压力套筒通过接触区域固定安装在部件上，可对该部件的振动进行检测。需检测的振动是内燃机运转时的爆燃噪声，该爆燃噪声通过压力套筒传到作为爆燃传感器的压电陶瓷振动传感器上，并被转换成一可分析的输出信号。把这种类型的爆燃传感器安装或夹装到压力套筒上并固定到振动部件上时会对制造方式以及工作连接测定线路中的瞬时误差测量和故障产生很大的影响。
这种公知的压力套筒通常由一种非常抗压的硬材料，例如钢制作，以便在较大的压力和温度波动下仍能保持无缺陷的检测。而将压力套筒和传感器一同夹紧封闭起来的壳体通常是由一种塑料，例如聚氨甲酸酯(PUR)或玻璃纤维加强的聚酰氨(PA66 GF35)制成。例如从EP 0 211019B1中得知，这种不同的部件可通过相应的螺纹结构彼此固定连接，并且这种连接基本上不受温度影响。
发明内容
按照本发明的压力套筒，特别是用于一振动传感器的压力套筒，带有一间接或直接固定件、检测部件和一压力套筒上的预应力弹簧止挡件，该固定件穿过压力套筒中的一中心掏空部分，具有支承面的压力套筒紧固在一振动产生部件上，检测部件在一轴向预应力作用下径向向外的保持在压力套筒上，其特征在于：止挡件由至少两个在压力套筒的外圆周上的拱形块构成，该拱形块可由压力套筒的支承材料制成。
按照本发明的这种装置，由于避免了切削加工过程，也就是说，不必切削出用于牢固旋紧的螺纹，因此可以保证实现一种简单而又可靠的制造方法，并且省去了去掉废屑的后序加工。根据支承的程度可调准压电陶瓷片(检测部件)的预应力。
优选地，本发明的压力套筒共有五个拱形块围绕压力套筒的圆周分布。
优选地，在本发明的压力套筒中，弹簧与拱形块直接相邻。
优选地，在本发明的压力套筒中，在弹簧与拱形块之间设置一可径向撑开的挡圈或一卡圈。
优选地，在本发明的压力套筒中，压力套筒由钢材制成。
优选地，在本发明的压力套筒中，压力套筒由黄铜制成。
优选地，在本发明的压力套筒中，检测部件为一压电陶瓷片。
优选地，在本发明的压力套筒中，在压力套筒的支承面上，在用于固定件的开口与径向外缘之间有一向上的倾斜部分，倾斜角为0.5°至1.5°。
优选地，在本发明的压力套筒中，振动产生部件为内燃机的发动机组。
附图说明
下面接合附图阐述带有一外壳的按照本发明的压力套筒的实施例。
图1为穿过一爆燃传感器外壳的纵剖面图，该爆燃传感器带有一压力套筒和在一弹簧上方的支承成形块；
图2为穿过图1中的压力套筒的一横截面图；
图3为图1中的压力套筒的一细部的一截面；
图4至6对应于上述各图，只是在弹簧上方带有一附加环。
具体实施方式
图1中示出一种带有一外壳1的内燃机燃传感器，该爆燃传感器内设置一压力套筒2，其下支承面3置于在此未示出的一需检测振动的发动机的外壳上。在压力套筒2的外圆周上，从下支承面3向上依排列的部件是：一隔离垫片4、一接触垫片5、一作为检测装置的压电陶瓷片6，其上面又是一第二接触垫片5和一第二隔离垫片4。位于该部件上面的是一地震块7，一盘形弹簧8将其压向压电陶瓷片6，拱形块20用作盘形弹簧8的止挡件，这在图2中可特别清楚地看出。在此，五个拱形块均匀地分布在压力套筒2的圆周上。
在塑料的、特别是以注塑方法制成的外壳的一整体连接部件10内插有一连接电缆11。连接电缆11的导线与压电陶瓷6两侧的两接触垫片5连接，并输送由压电陶瓷片6的压应力所产生的电压。一图中未示出的固定螺栓穿过压力套筒2内的一中心掏空部分或一孔12，通过该螺栓，整个爆燃传感器可间接或直接安装在内燃机壳体上。
在安装爆燃传感器时，全部由固定螺栓所施加的转矩都传递给压力套筒2，这就是说，在固定时不会有力作用在压电陶瓷片6上。盘形弹簧8紧贴着通过填缝在压力套筒2的周边形成的拱形块20，从而由部件4至7构成的整个装置压紧压力套筒2的一前伸区域13，因此产生一预应力，使整个振动传感器的主要部件保持在其起始位置。
预应力这样选择，使作用在压电陶瓷片6上的轴向力正好还不足以产生长久的电信号变化，并且最大程度地不受装配压力套筒2时热膨胀和不可避免地产生的压缩的影响。由地震块7所产生的、与内燃机的振成比例的脉冲在压电陶瓷6中转变成电压脉冲，该电压脉冲可在一相应的测量仪器上读出，或者可进一步传送到一控制设备中。
在图3中示出了压力套筒2在拱形块20设置的范围内的一详细视图。
在图4至6中示出了按照本发明的压力套筒2的另一实施形式。在此实施例中，在拱形块20与盘形弹簧8之间还设置一附加环21，而图4至6的压力套筒中与图1至3所示出的相同的其它特征采用相同的编号。
Claims (9)
1.压力套筒，是用于一振动传感器的压力套筒，带有一间接或直接固定件、用于检测内燃机运转时的爆燃噪声的检测部件(6)和一压力套筒上的预应力弹簧止挡件，该固定件穿过压力套筒(2)中的一中心掏空部分(12)，具有支承面(3)的压力套筒(2)紧固在一振动产生部件上，检测部件(6)在一轴向预应力作用下径向向外的保持在压力套筒(2)上，其特征在于：止挡件由至少两个在压力套筒(2)的外圆周上形成的拱形块(20)构成，该拱形块由压力套筒(2)的支承材料制成。
2.如权利要求1所述的压力套筒，其特征在于：共有五个拱形块(20)围绕压力套筒的圆周分布。
3.如权利要求1所述的压力套筒，其特征在于：弹簧(8)与拱形块(20)直接相邻。
4.如权利要求1所述的压力套筒，其特征在于：在弹簧(8)与拱形块(20)之间设置一可径向撑开的附加环(21)。
5.如权利要求1所述的压力套筒，其特征在于：压力套筒(2)由钢材制成。
6.如权利要求1所述的压力套筒，其特征在于：压力套筒(2)由黄铜制成。
7.如权利要求1所述的压力套筒，其特征在于：检测部件(6)为一压电陶瓷片。
8.如权利要求1所述的压力套筒，其特征在于：在压力套筒(2)的支承面(3)上，在用于固定件的开口与径向外缘之间有一向上的倾斜部分，倾斜角为0.5°至1.5°。
9.如权利要求1至8中任一项所述的压力套筒，其特征在于：振动产生部件为内燃机的发动机组。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19524152.5 | 1995-07-03 | ||
| DE19524152A DE19524152C1 (de) | 1995-07-03 | 1995-07-03 | Schwingungsaufnehmer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1147087A CN1147087A (zh) | 1997-04-09 |
| CN1110695C true CN1110695C (zh) | 2003-06-04 |
Family
ID=7765858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96110784A Expired - Lifetime CN1110695C (zh) | 1995-07-03 | 1996-07-03 | 压力套筒 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5798453A (zh) |
| KR (1) | KR100481238B1 (zh) |
| CN (1) | CN1110695C (zh) |
| DE (1) | DE19524152C1 (zh) |
| HU (1) | HU219527B (zh) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2759458B1 (fr) * | 1997-02-13 | 1999-04-30 | Siemens Automotive Sa | Capteur accelerometrique de cliquetis et son procede de fabrication |
| DE19829409C2 (de) * | 1998-07-01 | 2003-11-13 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
| DE19829379C2 (de) * | 1998-07-01 | 2002-11-07 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
| DE19829407A1 (de) * | 1998-07-01 | 2000-01-13 | Bosch Gmbh Robert | Schwingungsaufnehmer mit einer Druckhülse |
| DE10044476A1 (de) * | 2000-09-08 | 2002-04-04 | Bosch Gmbh Robert | Schwingungsaufnehmer zur mittelbaren oder unmittelbaren Befestigung an einem Schwingungen aufweisenden Bauteil |
| DE10044483A1 (de) * | 2000-09-08 | 2001-07-19 | Bosch Gmbh Robert | Schwingungsaufnehmer sowie Verfahren zur Herstellung eines Schwingungsaufnehmers |
| US6931905B2 (en) * | 2003-04-15 | 2005-08-23 | Stolle Machinery Company, Llc | Method and apparatus for forming container bodies |
| JP4209829B2 (ja) * | 2004-10-15 | 2009-01-14 | 三菱電機株式会社 | ノックセンサ及びその製造方法 |
| JP4121092B2 (ja) * | 2005-11-22 | 2008-07-16 | 三菱電機株式会社 | ノックセンサ |
| WO2008072807A1 (en) * | 2006-12-14 | 2008-06-19 | Inzi Controls Co., Ltd. | Sensor for vibration pickup |
| DE102007008862A1 (de) * | 2007-02-23 | 2008-08-28 | Robert Bosch Gmbh | Unfallsensor |
| DE102007026842A1 (de) * | 2007-06-06 | 2008-12-11 | Endress + Hauser Wetzer Gmbh + Co Kg | Vorrichtung zur Bestimmung und/oder Überwachung einer Messgröße |
| WO2011019318A1 (en) * | 2009-08-14 | 2011-02-17 | Peter Stenlund | A sensor unit positioned between opposing surfaces and an alert system |
| DE102011004144A1 (de) | 2011-02-15 | 2012-08-16 | Robert Bosch Gmbh | Schwingungsaufnehmer und Verfahren zum Herstellen eines derartigen Schwingungsaufnehmers |
| JP5876448B2 (ja) * | 2012-09-20 | 2016-03-02 | 日本特殊陶業株式会社 | ノッキングセンサ |
| DE102015200216A1 (de) * | 2015-01-09 | 2016-07-14 | Robert Bosch Gmbh | Schwingungsaufnehmer zum Aufnehmen von Schwingungen eines Schwingungen verursachenden Bauteils |
| DE102016214841A1 (de) * | 2016-08-10 | 2018-02-15 | Robert Bosch Gmbh | Schwingungsaufnehmer zum Aufnehmen von Schwingungen eines Schwingungen verursachenden Bauteils |
| DE102016224801A1 (de) * | 2016-12-13 | 2018-06-14 | Robert Bosch Gmbh | Schwingungsaufnehmer zum Aufnehmen von Schwingungen eines Schwingungen verursachenden Bauteils |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3503558A1 (de) * | 1985-02-02 | 1986-08-07 | Bosch Gmbh Robert | Aus wenigstens zwei teilen bestehendes gehaeuse |
| JPS6455428U (zh) * | 1987-10-01 | 1989-04-05 | ||
| US4964294A (en) * | 1988-09-12 | 1990-10-23 | Ngk Spark Plug Co., Ltd. | Non-resonating type knock sensor |
| US4978883A (en) * | 1988-10-12 | 1990-12-18 | Mitsubishi Denki Kabushiki Kaisha | Vibration detecting device |
| US5144837A (en) * | 1989-03-15 | 1992-09-08 | Mitsubishi Denki K.K. | Acceleration detector |
| JPH0363528A (ja) * | 1989-08-01 | 1991-03-19 | Mitsubishi Electric Corp | 振動検出器 |
| DE4123786A1 (de) * | 1991-07-18 | 1993-01-21 | Bosch Gmbh Robert | Klopfsensor |
| FR2703772B1 (fr) * | 1993-04-10 | 1995-05-19 | Bosch Gmbh Robert | Douille de pression, notamment pour un capteur de cognement. |
| DE4403660B4 (de) * | 1993-04-10 | 2006-08-10 | Robert Bosch Gmbh | Druckhülse |
-
1995
- 1995-07-03 DE DE19524152A patent/DE19524152C1/de not_active Expired - Lifetime
-
1996
- 1996-07-02 HU HU9601818A patent/HU219527B/hu unknown
- 1996-07-02 US US08/674,544 patent/US5798453A/en not_active Expired - Lifetime
- 1996-07-02 KR KR1019960027193A patent/KR100481238B1/ko not_active IP Right Cessation
- 1996-07-03 CN CN96110784A patent/CN1110695C/zh not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| HUP9601818A3 (en) | 2000-10-30 |
| HU9601818D0 (en) | 1996-08-28 |
| HUP9601818A2 (hu) | 1999-02-01 |
| DE19524152C1 (de) | 1996-05-23 |
| US5798453A (en) | 1998-08-25 |
| KR970007312A (ko) | 1997-02-21 |
| CN1147087A (zh) | 1997-04-09 |
| HU219527B (hu) | 2001-04-28 |
| KR100481238B1 (ko) | 2005-06-13 |
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