JPH01118136U - - Google Patents
Info
- Publication number
- JPH01118136U JPH01118136U JP1258788U JP1258788U JPH01118136U JP H01118136 U JPH01118136 U JP H01118136U JP 1258788 U JP1258788 U JP 1258788U JP 1258788 U JP1258788 U JP 1258788U JP H01118136 U JPH01118136 U JP H01118136U
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- throttle valve
- small diameter
- hole
- camshaft
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図から第４図に至る各図は、本考案の安全
機構をそなえた電子制御の絞り弁の第１の実施例
の構成及び作用を示す図、第５図は第１の実施例
の変形例、第６図及び第７図は第２の実施例の構
成と作用を説明する図、第８図及び第９図は従来
構成を示す図である。
符号の説明、１０１……吸気通路、１０２……
絞り弁、１０３……絞り弁の回動軸、１０４……
スプリング、１０５……制御モータ、１０６……
制御回路、１０７……アクセル操作信号、１０９
……制御モータの回動軸、１１０……大径の軸、
１１０ａ……絶縁物質からなる大径の軸、１１３
……透孔、１１４……係合部材、１１５……大径
部、１１６……小径部、１１７……カム軸、１１
８……軸方向溝、１１９……開度センサ信号、１
２０……アクチユエータ、１２２……絶縁物質か
らなるパイプ、１２３ａ，１２３ｂ……形状記憶
合金からなるコイルばね、１２４……トランジス
タ、１２５……電源。
Each figure from FIG. 1 to FIG. 4 shows the structure and operation of a first embodiment of an electronically controlled throttle valve equipped with a safety mechanism of the present invention, and FIG. Modifications FIGS. 6 and 7 are diagrams explaining the configuration and operation of the second embodiment, and FIGS. 8 and 9 are diagrams showing the conventional configuration. Explanation of symbols, 101... Intake passage, 102...
Throttle valve, 103... Throttle valve rotation axis, 104...
Spring, 105... Control motor, 106...
Control circuit, 107... Accelerator operation signal, 109
...Control motor rotation axis, 110...Large diameter shaft,
110a...Large diameter shaft made of insulating material, 113
...Through hole, 114...Engaging member, 115...Large diameter portion, 116...Small diameter portion, 117...Camshaft, 11
8... Axial groove, 119... Opening sensor signal, 1
20... Actuator, 122... Pipes made of insulating material, 123a, 123b... Coil springs made of shape memory alloy, 124... Transistor, 125... Power supply.
Claims (1)
５の回動軸１０９との係合を解除することができ
るものにおいて、前記絞り弁１０２の回動軸１０
３と前記制御モータ１０５の回動軸１０９とは少
なくとも相対する軸端部側が互いに大小異なつた
径に形成され、大径の軸１１０には軸端から小径
の軸が同心に遊嵌する孔１１１が穿設されて前記
小径の軸が回動自在に挿入され、該小径の軸は軸
端から軸方向孔１１２が同心に穿設されて中空筒
状に形成されると共に径方向の透孔１１３が前記
軸方向孔１１２と交叉して穿設されて係合部材１
１４が摺動自在に配置され、前記小径の軸の軸方
向孔１１２内には大径部１１５と小径部１１６と
からなり、前記軸方向孔１１２内を摺動して前記
係合部材１１４を前記小径の軸の径方向に移動さ
せるカム軸１１７が配置され、前記小径の軸が遊
嵌する大径の軸の孔１１１の内周面には、前記係
合部材１１４の一部分が前記小径の軸の外周面外
に位置するとき係合する軸方向溝１１８が形成さ
れていて、前記絞り弁１０２が正常に開閉制御さ
れているときは前記カム軸１１７の大径部１１５
によつて、前記係合部材１１４が前記軸方向溝１
１８に係合して前記絞り弁１０２の回動軸１０３
が前記制御モータ１０５の回動軸１０９と係合し
、制御回路１０６に信号を供給するセンサ、前記
制御モータ１０５の何れかの故障によつて前記絞
り弁１０２の開閉制御に異常を生じたときは、前
記制御回路１０６に入力するアクセル操作信号１
０７と前記絞り弁１０２の開度センサ信号１１９
との喰違いによつて、前記制御回路１０６が出力
する信号によつて動作するアクチユエータが、前
記カム軸１１７を軸方向に移動させ、該カム軸１
１７の小径部１１６によつて、前記係合部材１１
４と前記軸方向溝１１８との係合が解除され、前
記絞り弁１０２を閉じる方向に前記絞り弁１０２
の回動軸を付勢するスプリング１０４によつて閉
弁する安全機構をそなえた電子制御の絞り弁。 Rotating shaft 103 of throttle valve 102 and control motor 10
5, the rotation shaft 10 of the throttle valve 102 can be disengaged from the rotation shaft 109 of the throttle valve 102.
3 and the rotation shaft 109 of the control motor 105 are formed with different diameters at least on their opposing shaft end sides, and the large diameter shaft 110 has a hole 111 into which a small diameter shaft is loosely fitted concentrically from the shaft end. is bored and the small-diameter shaft is rotatably inserted, and the small-diameter shaft has an axial hole 112 concentrically drilled from the shaft end to form a hollow cylindrical shape, and a radial through hole 113. is bored to intersect with the axial hole 112 to form the engaging member 1.
14 is slidably disposed in the axial hole 112 of the small diameter shaft and consists of a large diameter portion 115 and a small diameter portion 116. A camshaft 117 for moving the small diameter shaft in the radial direction is disposed, and a portion of the engaging member 114 is attached to the inner peripheral surface of the large diameter shaft hole 111 into which the small diameter shaft loosely fits. An axial groove 118 that engages when located outside the outer peripheral surface of the shaft is formed, and when the throttle valve 102 is normally controlled to open and close, the large diameter portion 115 of the camshaft 117
Accordingly, the engaging member 114 is connected to the axial groove 1.
18 to rotate the rotation shaft 103 of the throttle valve 102.
When an abnormality occurs in the opening/closing control of the throttle valve 102 due to a failure in either the sensor that engages with the rotating shaft 109 of the control motor 105 and supplies a signal to the control circuit 106, or the control motor 105. is the accelerator operation signal 1 input to the control circuit 106
07 and the opening sensor signal 119 of the throttle valve 102
The actuator operated by the signal output from the control circuit 106 moves the camshaft 117 in the axial direction due to the misalignment between the camshaft 1
17 small diameter portions 116, the engagement member 11
4 and the axial groove 118 is released, and the throttle valve 102 is moved in the direction of closing the throttle valve 102.
An electronically controlled throttle valve equipped with a safety mechanism that closes the valve using a spring 104 that biases the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258788U JPH01118136U (en) | 1988-02-03 | 1988-02-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258788U JPH01118136U (en) | 1988-02-03 | 1988-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01118136U true JPH01118136U (en) | 1989-08-09 |
Family
ID=31222156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1258788U Pending JPH01118136U (en) | 1988-02-03 | 1988-02-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01118136U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60240835A (en) * | 1984-05-12 | 1985-11-29 | Nissan Motor Co Ltd | Control device of intake air quantity in internal-combustion engine |
| JPS635120A (en) * | 1986-06-23 | 1988-01-11 | Mazda Motor Corp | Throttle valve control device for automobile engine |
-
1988
- 1988-02-03 JP JP1258788U patent/JPH01118136U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60240835A (en) * | 1984-05-12 | 1985-11-29 | Nissan Motor Co Ltd | Control device of intake air quantity in internal-combustion engine |
| JPS635120A (en) * | 1986-06-23 | 1988-01-11 | Mazda Motor Corp | Throttle valve control device for automobile engine |
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