JPH044990Y2 - - Google Patents
Info
- Publication number
- JPH044990Y2 JPH044990Y2 JP10101087U JP10101087U JPH044990Y2 JP H044990 Y2 JPH044990 Y2 JP H044990Y2 JP 10101087 U JP10101087 U JP 10101087U JP 10101087 U JP10101087 U JP 10101087U JP H044990 Y2 JPH044990 Y2 JP H044990Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- boot
- substrate
- pressure receiving
- flexible body
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004519 grease Substances 0.000 description 5
- 230000002528 anti-freeze Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、シール部材としてのブーツの回転耐
久試験において、ブーツ内部からのグリースの飛
散を検知することによつてブーツの破損を検知す
る装置に関する。[Detailed description of the invention] [Field of industrial application] The present invention is a device that detects damage to a boot by detecting grease scattering from inside the boot during a rotational durability test of the boot as a sealing member. Regarding.
従来から、たとえば前輪駆動車のフロントアク
スルシヤフトの等速ジヨイントなどをシールする
ために用いられるゴム材製ブーツは優れた耐久性
が要求されることから、調温槽内でだいたい−40
℃〜150℃の範囲の温度条件が設定され、回転試
験機による回転耐久試験が行なわれている。
Conventionally, rubber boots used to seal the constant velocity joint of the front axle shaft of front-wheel drive vehicles, for example, are required to have excellent durability, so they last approximately -40°C in a temperature controlled tank.
Temperature conditions were set in the range of ℃ to 150℃, and a rotation durability test was conducted using a rotation tester.
この試験は、第２図に示すように、固定用マグ
ネツト５１上に立設されたリミツトスイツチ５２
と、該リミツトスイツチ５２上にレバー５３を介
して摺動自在かつ適度に傾倒した状態で設けられ
た検知板５４とからなる破損検知機を、回転試験
機に取り付けられて回転するブーツ５５に前記検
知板５４が近接した状態で設置して行ない、ブー
ツ５５が破損したときに遠心力によつて破損箇所
５６から飛散するブーツ５５内のグリース５７が
検知板５４に付着することによつて、該検知板５
４およびこれと一体のレバー５３が重みで傾倒
し、これに伴なうリミツトスイツチ５２の動作に
よつて前記破損を検知するようになつている。 This test was carried out using a limit switch 52 erected on a fixing magnet 51, as shown in FIG.
and a detection plate 54 provided on the limit switch 52 via a lever 53 in a freely slidable and moderately inclined state, is attached to a rotating boot 55 attached to a rotary testing machine. The detection is performed by installing the plates 54 in close proximity to each other, and when the boot 55 is damaged, the grease 57 inside the boot 55, which is scattered from the damaged area 56 due to centrifugal force, adheres to the detection plate 54. Board 5
4 and a lever 53 integrated therewith are tilted by the weight, and the breakage is detected by the accompanying operation of the limit switch 52.
ところが、上記従来の破損検知装置は、０℃よ
りも高い設定温度条件での試験では何ら問題ない
が、０℃以下の低温条件で試験を行なう場合は空
気中の水分の凝固付着（霜）が起こるため、検知
板５４およびレバー５３の傾倒動作に信頼性がな
くなり、破損時を正確に検知できなくなる欠点が
あつた。
However, with the conventional damage detection device described above, there is no problem when testing at a set temperature higher than 0°C, but when testing at a low temperature below 0°C, moisture in the air solidifies and adheres (frost). As a result, the tilting operation of the detection plate 54 and the lever 53 becomes unreliable, resulting in a drawback that it is not possible to accurately detect the occurrence of breakage.
本考案は、上記問題に鑑み、０℃以下の低温条
件での回転耐久試験において信頼性の高いブーツ
破損検知を行なうことを目的としてなされたもの
である。 In view of the above-mentioned problems, the present invention was developed with the aim of detecting boot damage with high reliability in a rotational durability test under low temperature conditions of 0° C. or lower.
この目的のため、本考案の破損検知装置は、基
板と該基板の一側に気密的に装着され所要の受圧
面積を有する可撓体の間に受圧室を形成してなる
受圧器の前記受圧室を、管路を介して圧力変換器
の感圧部へ連通させ、受圧室および管路には水よ
りも凝固点が低い作動液を満たした構成とした。
For this purpose, the damage detection device of the present invention includes a pressure receiving chamber formed between a substrate and a flexible body that is airtightly attached to one side of the substrate and has a required pressure receiving area. The chamber was connected to the pressure sensitive part of the pressure transducer via a pipe line, and the pressure receiving chamber and the pipe line were filled with a working fluid whose freezing point was lower than that of water.
回転試験機に取り付けられて回転しているブー
ツが破損し、遠心力によつて該ブーツ内から飛散
するグリースが受圧器の可撓体表面に衝突する
と、その瞬間該可撓体が撓んで受圧室内に衝撃圧
力が発生し、この衝撃圧力は受圧室および管路に
満たされた作動液によつて圧力変換器の感圧部へ
伝播し、電圧、電流などの電気量に変換される。
作動液は、０℃以下でも液相状態を保持して圧力
伝播媒体としての作用を果たす。
When a rotating boot attached to a rotation testing machine is damaged and the grease scattered from inside the boot due to centrifugal force collides with the surface of the flexible body of the pressure receiver, the flexible body bends at that moment and receives the pressure. Impact pressure is generated within the chamber, and this impact pressure is propagated to the pressure sensitive part of the pressure transducer by the hydraulic fluid filled in the pressure receiving chamber and the pipe line, and is converted into electrical quantities such as voltage and current.
The hydraulic fluid maintains a liquid state even at temperatures below 0° C. and functions as a pressure propagation medium.
以下、本考案を第１図に示す一実施例に基いて
説明すると、１は、固定用マグネツト２上に立設
した支柱３に、軸４を介して俯仰角調節自在に基
板５を連結し、該基板５の一側に周設した縁枠
５′にパツキン７で気密を保持した状態で金属製
薄板よりなる可撓体６をネジ８止めした構造の受
圧器である。試料たるブーツの大きさ等を考慮し
た適当な面積をもつ前記可撓体６と基板５の間に
は受圧室９が形成されている。
Hereinafter, the present invention will be explained based on an embodiment shown in FIG. 1. First, a substrate 5 is connected to a column 3 erected on a fixing magnet 2 via a shaft 4 so that the angle of elevation can be adjusted. This pressure receiver has a structure in which a flexible body 6 made of a thin metal plate is fixed with screws 8 to an edge frame 5' provided around one side of the base plate 5 while keeping airtightness with a gasket 7. A pressure receiving chamber 9 is formed between the flexible body 6 and the substrate 5, which has an appropriate area taking into consideration the size of the sample boot.
１１は一端１１ａを前記受圧器１の基板５に形
成された管継手部１０に、他端１１ｂを圧力変換
器１３内の図示しない感圧部に接続したチユーブ
で、受圧室９と、該受圧室９に管継手部１０を介
して連通するこのチユーブ１１内の管路１２に
は、たとえば不凍液のような、０℃以下の低温条
件でも凍結しない作動液１４が満たされている。
１５は前記管路１２中途に設けられた流量調整弁
である。 Reference numeral 11 denotes a tube having one end 11a connected to a pipe joint 10 formed on the substrate 5 of the pressure receiver 1, and the other end 11b connected to a pressure sensitive part (not shown) in the pressure transducer 13. A conduit 12 within this tube 11 that communicates with the chamber 9 via a pipe joint 10 is filled with a working fluid 14, such as antifreeze, which does not freeze even under low temperature conditions of 0° C. or lower.
Reference numeral 15 denotes a flow rate regulating valve provided midway through the pipe line 12.
受圧器１は、図示しない回転試験機に取り付け
られたブーツに可撓体６を比較的近接させた状態
で調温槽１６の内側へ設置し、圧力変換器１３は
調温槽１６の外部へ設置する。回転しているブー
ツに破損が生じて、遠心力により破損箇所から飛
散するグリースが可撓体６に衝突すると、そのと
きに受圧室９に発生した衝撃圧力は、作動液１４
を介して圧力変換器１３の感圧部へ印加される。
圧力変換器１３は、この衝撃圧力印加による前記
感圧部の歪を、圧電素子やその他の機械エネルギ
ー電気エネルギ変換素子を利用して電気信号に変
換するもので、この信号によってブーツが破損し
たことを電気的に検知するとともに、該検知によ
つて回転試験機の駆動を停止させる制御系を構成
することができる。 The pressure receiver 1 is installed inside the temperature control tank 16 with the flexible body 6 relatively close to a boot attached to a rotation tester (not shown), and the pressure transducer 13 is installed outside the temperature control tank 16. Install. When the rotating boot is damaged and grease scattered from the damaged area due to centrifugal force collides with the flexible body 6, the impact pressure generated in the pressure receiving chamber 9 at that time is transferred to the hydraulic fluid 14.
is applied to the pressure sensitive part of the pressure transducer 13 via the pressure transducer 13.
The pressure transducer 13 converts the strain in the pressure sensing section due to the application of this impact pressure into an electrical signal using a piezoelectric element or other mechanical energy/electrical energy conversion element, and this signal causes damage to the boot. It is possible to configure a control system that electrically detects the rotation tester and stops the rotation testing machine based on the detection.
以上の説明のように、本考案の破損検知装置
は、ブーツの回転試験において破損したブーツか
ら飛出したグリースが可撓体に衝突したときに発
生する圧力を、作動液を介して圧力変換機に印加
し電気信号に変換するもので、不凍液など０℃以
下でも凍結しない作動液を用いているため、低温
条件でも信頼性の高い破損検出が可能となるもの
である。
As explained above, the damage detection device of the present invention uses a pressure transducer to detect the pressure generated when the grease splashed out from a damaged boot collides with a flexible body during a boot rotation test. The system uses a working fluid such as antifreeze that does not freeze even at temperatures below 0°C, making it possible to detect damage with high reliability even under low-temperature conditions.
第１図は本考案に係る破損検知装置の一実施例
を示す一部断面を表わす側面図、第２図は従来の
破損検知装置の一例を示す使用状態の斜視図であ
る。
１……受圧器、２……固定用マグネツト、３…
…支柱、４……軸、５……基板、５′……縁枠、
６……可撓体、７……パツキン、８……ネジ、９
……受圧室、１０……管継手部、１１……チユー
ブ、１１ａ……一端、１１ｂ……他端、１２……
管路、１３……圧力変換器、１４……作動液、１
５……流量調整弁。
FIG. 1 is a partially sectional side view showing an embodiment of a damage detection device according to the present invention, and FIG. 2 is a perspective view showing an example of a conventional damage detection device in a state of use. 1...Pressure receiver, 2...Fixing magnet, 3...
...Strut, 4...Axle, 5...Substrate, 5'...Edge frame,
6...Flexible body, 7...Putskin, 8...Screw, 9
...Pressure receiving chamber, 10...Pipe joint part, 11...Tube, 11a...One end, 11b...Other end, 12...
Pipeline, 13... Pressure transducer, 14... Working fluid, 1
5...Flow rate adjustment valve.
Claims (1)
要の受圧面積を有する可撓体６の間に受圧室９を
形成してなる受圧器１の前記受圧室９を、管路１
２を介して圧力変換器１３の感圧部へ連通させ、
受圧室９および管路１２には水よりも凝固点が低
い作動液１４を満たしたことを特徴とするブーツ
回転試験における破損検知装置。 The pressure receiving chamber 9 of the pressure receiver 1 is formed between a substrate 5 and a flexible body 6 that is airtightly attached to one side of the substrate 5 and has a required pressure receiving area.
2 to the pressure sensitive part of the pressure transducer 13,
A failure detection device for a boot rotation test, characterized in that a pressure receiving chamber 9 and a pipe line 12 are filled with a working fluid 14 having a freezing point lower than that of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10101087U JPH044990Y2 (en) | 1987-07-02 | 1987-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10101087U JPH044990Y2 (en) | 1987-07-02 | 1987-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS646539U JPS646539U (en) | 1989-01-13 |
| JPH044990Y2 true JPH044990Y2 (en) | 1992-02-13 |
Family
ID=31329612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10101087U Expired JPH044990Y2 (en) | 1987-07-02 | 1987-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044990Y2 (en) |
-
1987
- 1987-07-02 JP JP10101087U patent/JPH044990Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS646539U (en) | 1989-01-13 |
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