JPH0224701U - - Google Patents
Info
- Publication number
- JPH0224701U JPH0224701U JP10272888U JP10272888U JPH0224701U JP H0224701 U JPH0224701 U JP H0224701U JP 10272888 U JP10272888 U JP 10272888U JP 10272888 U JP10272888 U JP 10272888U JP H0224701 U JPH0224701 U JP H0224701U
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- tire pressure
- fixed
- displacement
- axis direction
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案の第１実施例を示す要部断面図
、第２図は同上実施例の空圧シリンダの構成図、
第３図は同上実施例の信号処理回路のブロツク図
、第４図は本考案の第２実施例を示す要部断面図
、第５図は本考案の第３実施例を示す要部断面図
、第６図は第５図のＡ―Ａ線矢視断面図である。
１……ホイール、２……タイヤ、６……空圧シ
リンダ、１１……反射板、１２……アクスルハウ
ジング、１３……ブラケツト、１４……超音波式
変位計、２３……Ｄ／Ａコンバータ、２４……タ
イヤ圧力計、２６……タイヤ圧警報装置。
FIG. 1 is a cross-sectional view of essential parts showing a first embodiment of the present invention, FIG. 2 is a configuration diagram of a pneumatic cylinder of the same embodiment,
FIG. 3 is a block diagram of the signal processing circuit according to the above embodiment, FIG. 4 is a cross-sectional view of main parts showing a second embodiment of the present invention, and FIG. 5 is a cross-sectional view of main parts showing a third embodiment of the present invention. , FIG. 6 is a sectional view taken along the line AA in FIG. 5. 1...Wheel, 2...Tire, 6...Pneumatic cylinder, 11...Reflector, 12...Axle housing, 13...Bracket, 14...Ultrasonic displacement meter, 23...D/A converter , 24... Tire pressure gauge, 26... Tire pressure alarm device.
Claims (1)
る空圧アクチユエータをタイヤと共に回転する回
転部材に固定し、該空圧アクチユエータにアクス
ルを中心とするリング状の反射板を固着する一方
、超音波を放射してから前記反射板で反射した反
射波を受信するまでの時間変化に基づいて前記反
射板のアクスル軸方向の変位を検出する反射板変
位検出手段を、非回転部材に固定すると共に、前
記反射板変位検出手段で検出した変位量をタイヤ
圧に相当する信号に信号処理する手段とを備えた
ことを特徴とするタイヤ圧検出装置。 A pneumatic actuator that reciprocates in the axle axis direction in response to tire pressure is fixed to a rotating member that rotates with the tire, and a ring-shaped reflection plate centered on the axle is fixed to the pneumatic actuator, while ultrasonic waves are emitted. A reflector displacement detection means for detecting a displacement of the reflector in the axle axis direction based on a time change from emitting the reflected wave to receiving the reflected wave reflected by the reflector is fixed to the non-rotating member; 1. A tire pressure detection device comprising: means for signal processing the amount of displacement detected by the reflector displacement detection means into a signal corresponding to tire pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10272888U JPH0442163Y2 (en) | 1988-08-04 | 1988-08-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10272888U JPH0442163Y2 (en) | 1988-08-04 | 1988-08-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0224701U true JPH0224701U (en) | 1990-02-19 |
| JPH0442163Y2 JPH0442163Y2 (en) | 1992-10-05 |
Family
ID=31332902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10272888U Expired JPH0442163Y2 (en) | 1988-08-04 | 1988-08-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442163Y2 (en) |
-
1988
- 1988-08-04 JP JP10272888U patent/JPH0442163Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442163Y2 (en) | 1992-10-05 |
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