JPH0168490U - - Google Patents
Info
- Publication number
- JPH0168490U JPH0168490U JP16438987U JP16438987U JPH0168490U JP H0168490 U JPH0168490 U JP H0168490U JP 16438987 U JP16438987 U JP 16438987U JP 16438987 U JP16438987 U JP 16438987U JP H0168490 U JPH0168490 U JP H0168490U
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- door
- piston
- compressed air
- opened
- 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
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例に係るバスの扉の開
閉用のエアシリンダの配管図を示すブロツク図、
第２図は扉の開閉機構を示す要部正面図、第３図
は同平面図である。
なお図面に用いた符号において、１２……昇降
口、１３……扉、１４……開閉用アーム、１５…
…エアシリンダ、２０……ピストン、２１……第
１室、２２……開閉操作弁、２３……非常操作弁
、２９……ピストンロツド、３１……第２室、３
４……リング状突部、３５……Ｏリング、３６…
…クツシヨンボス部、３７……空間、３８……連
通孔、である。
FIG. 1 is a block diagram showing a piping diagram of an air cylinder for opening and closing a bus door according to an embodiment of the present invention;
FIG. 2 is a front view of essential parts showing the door opening/closing mechanism, and FIG. 3 is a plan view of the same. In addition, in the symbols used in the drawings, 12...doorway, 13...door, 14...opening/closing arm, 15...
... Air cylinder, 20 ... Piston, 21 ... First chamber, 22 ... Opening/closing operation valve, 23 ... Emergency operation valve, 29 ... Piston rod, 31 ... Second chamber, 3
4...Ring-shaped protrusion, 35...O-ring, 36...
. . . cushion boss portion, 37 . . . space, 38 . . . communication hole.
Claims (1)
に、該扉をエアシリンダによつて開閉操作するよ
うにした装置において、前記エアシリンダのピス
トンの有効面積の大きな部分に臨む第１室を開閉
操作弁および非常操作弁を介して圧縮空気の供給
源に接続するとともに、前記ピストンの有効面積
の小さな部分に臨む第２室を前記非常操作弁を介
して前記圧縮空気の供給源に接続し、前記第１室
と前記第２室とに圧縮空気を供給することによつ
て前記エアシリンダで前記扉を開くとともに、前
記第１室の圧縮空気を排出することによつて前記
エアシリンダで前記扉を閉じるようにし、さらに
前記ピストンの前記第２室側にクツシヨンボス部
を設け、該クツシヨンボス部と嵌合するリング状
突部の内側から前記第２室へ圧縮空気を供給する
ようにし、前記ピストンを前記扉が開かれる方向
に所定のストローク移動すると前記ピストンの前
記第２室に臨む部分の有効面積がさらに小さくな
るようにするとともに、前記クツシヨンボス部の
内側に圧縮空気を蓄えておく空間を形成し、該空
間の前記第２室と連通させるようにしたことを特
徴とする車両用扉の開閉装置。 In a device in which a door is slidably attached to a vehicle entrance and exit, and the door is opened and closed by an air cylinder, the first chamber facing a large effective area of the piston of the air cylinder opens and closes. a second chamber facing a small effective area of the piston is connected to the compressed air supply source via the emergency operation valve; The door is opened by the air cylinder by supplying compressed air to the first chamber and the second chamber, and the door is opened by the air cylinder by discharging the compressed air from the first chamber. Further, a cushion boss portion is provided on the second chamber side of the piston, and compressed air is supplied to the second chamber from the inside of a ring-shaped protrusion that fits with the cushion boss portion, and the piston is closed. When the door is moved by a predetermined stroke in the direction in which the door is opened, the effective area of the portion of the piston facing the second chamber is further reduced, and a space is formed inside the cushion boss portion to store compressed air; An opening/closing device for a vehicle door, characterized in that the device communicates with the second chamber of the space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16438987U JPH0629422Y2 (en) | 1987-10-26 | 1987-10-26 | Opening / closing device for vehicle doors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16438987U JPH0629422Y2 (en) | 1987-10-26 | 1987-10-26 | Opening / closing device for vehicle doors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0168490U true JPH0168490U (en) | 1989-05-02 |
| JPH0629422Y2 JPH0629422Y2 (en) | 1994-08-10 |
Family
ID=31449950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16438987U Expired - Lifetime JPH0629422Y2 (en) | 1987-10-26 | 1987-10-26 | Opening / closing device for vehicle doors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629422Y2 (en) |
-
1987
- 1987-10-26 JP JP16438987U patent/JPH0629422Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0629422Y2 (en) | 1994-08-10 |
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