JPH0361452U

JPH0361452U -

Info

Publication number: JPH0361452U
Application number: JP12264489U
Authority: JP
Priority date: 1989-10-19
Filing date: 1989-10-19
Publication date: 1991-06-17

Description

[Brief explanation of the drawing]

第１図はキヤブオーバ型トラツクのキヤブに本
考案を適用した一実施例を示す概略側面図、第２
図は第１図に示した可動ステツプ装置の要部構成
図である。１０……キヤブ、１２……乗降口、１４……ド
ア、１６……ヒンジ、２０……ドアスイツチ、２
２……固定ステツプ、２４……可動ステツプ装置
、２６ａ及び２６ｂ……縦リンク、２８……支持
リンク、３０……ステツプ、３４……複動式エア
シリンダ、３６……格納側電磁弁、３８……圧縮
空気源、４０……展張側電磁弁、４２……電源、
５６……格納検出スイツチ、５８……ブザー、６
０……アラームランプ。 Fig. 1 is a schematic side view showing an embodiment in which the present invention is applied to the cab of a cab-over type truck;
This figure is a block diagram of the main parts of the movable step device shown in FIG. 1. 10... Cab, 12... Entrance/exit, 14... Door, 16... Hinge, 20... Door switch, 2
2...Fixed step, 24...Movable step device, 26a and 26b...Vertical link, 28...Support link, 30...Step, 34...Double acting air cylinder, 36...Storage side solenoid valve, 38 ... Compressed air source, 40 ... Expansion side solenoid valve, 42 ... Power supply,
56... Storage detection switch, 58... Buzzer, 6
0...Alarm lamp.

Claims

[Scope of Claim for Utility Model Registration] (1) A step movable in the width direction of the vehicle suspended via a parallel link mechanism below the entrance/exit of the vehicle, connected to the parallel link mechanism, and located in the pressure chamber on its expansion side. By supplying compressed air, the movable step is extended to the use position outside the vehicle body, and by supplying compressed air to the storage side pressure chamber, the movable step is moved to the storage position inside the vehicle body. a double-acting air cylinder to be stored, and an expansion-side solenoid valve and a storage-side solenoid valve interposed between the expansion-side pressure chamber and the storage-side pressure chamber of the double-acting air cylinder and a compressed air source, respectively. The movable step is configured such that, while the vehicle is running, the storage side pressure chamber of the air cylinder is communicated with the compressed air source via the storage side solenoid valve, so that the movable step is held in the storage position. A step device for getting on and off a vehicle, characterized by: (2) A step movable in the vehicle width direction suspended below the vehicle entrance via a parallel link mechanism, connected to the parallel link mechanism, and compressed air is supplied to the pressure chamber on its expansion side. Therefore, a double-acting air cylinder extends the movable step to a use position outside the vehicle body, and stores the movable step in a storage position inside the vehicle body by supplying compressed air to the storage side pressure chamber; and an expansion-side solenoid valve and a storage-side solenoid valve interposed between the expansion-side pressure chamber and the storage-side pressure chamber of the double-acting air cylinder and the compressed air source, respectively, so that the air cylinder can be operated while the vehicle is running. The movable step is configured to be held in the retracted position by communicating the storage-side pressure chamber with the compressed air source via the storage-side solenoid valve, the storage-side solenoid valve comprising: A step device for getting on and off a vehicle, characterized in that the step device is configured to communicate the compressed air source with a storage side pressure chamber of an air cylinder by being deenergized. (3) A step movable in the vehicle width direction suspended below the vehicle entrance via a parallel link mechanism, connected to the parallel link mechanism, and compressed air is supplied to the pressure chamber on its expansion side. Therefore, a double-acting air cylinder extends the movable step to a use position outside the vehicle body, and stores the movable step in a storage position inside the vehicle body by supplying compressed air to the storage side pressure chamber; An expansion-side solenoid valve and a storage-side solenoid valve are interposed between the expansion-side pressure chamber and the storage-side pressure chamber of the double-acting air cylinder and the compressed air source, respectively, and the opening/closing of the door provided at the entrance/exit. a door switch for controlling energization and deenergization of the extension-side solenoid valve and the retraction-side solenoid valve in accordance with the above, characterized in that the door switch is arranged near the pivot end of the door relative to the vehicle body. A step device for getting on and off a vehicle.