EP0457025A1 - Swivel barrier in a passage leading to the passenger's room in a bus having a lift for wheel chair - Google Patents

Abstract

A swivel barrier (1) is provided in a passage leading to the passenger compartment of a bus having a wheelchair lift. The swivel barrier (1) has at least one swivel bar (2, 2') with an extension (4) projecting beyond the pivot (3). The extension (4) is connected in articulated fashion to the piston (6) of a compressed air cylinder (5) fixed to a frame at the other end. On the piston side not supplied with compressed air, the single-acting piston cylinder (5) has a compression spring (7). The compressed air cylinder (5) can be pressurised or bled via the main switch (8) "wheelchair lift on/off" with the interposition of a solenoid valve (9). <IMAGE>

Description

The invention relates to a pendulum barrier at the passage to the passenger compartment of buses with wheelchair lift and a main switch for the lift which can be actuated from the driver's position.

The invention has for its object to facilitate boarding for wheelchair users in buses.

This is achieved according to the invention in that the pendulum barrier has at least one pendulum bracket with an extension projecting beyond the fulcrum, which is articulated to the piston of another end of the frame-mounted compressed air cylinder, the single-acting piston cylinder has a compression spring on the piston side not pressurized with compressed air and the compressed air cylinder above the main switch can be acted upon or vented with the interposition of a solenoid valve. In this way, the pendulum barrier is opened automatically when the driver switches on the main switch for the wheelchair lift release on the dashboard. If the main lift switch is reset to "Off" after using the wheelchair lift, the compressed air cylinders are vented and the pendulum brackets return to their closed position. In normal passenger operation, the passing barriers can be opened by the passing passenger in the usual way. The return spring of the compressed air piston built into the compressed air cylinder, after the passenger releases the pendulum bracket (s), pulls it back into its closed position.

According to an advantageous embodiment of the invention, two pendulum brackets are arranged on the passage to the passenger compartment, each half closing or opening the passage. This offers the advantage over the use of a single pendulum bracket that the pendulum barriers do not protrude so far into the passenger compartment with the correspondingly shorter bracket lengths. According to a further feature of the invention, a preferably adjustable throttle valve is arranged between the solenoid valve and the compressed air cylinder. In this way, the opening speed of the swing barrier can be adjusted.

According to another embodiment, corresponding light or ultrasound barriers are provided for opening and closing the pendulum barrier with the wheelchair. This enables the pendulum barrier to be opened and closed independently of the driver, the automatic mechanism of which only comes into play when a wheelchair user passes through.

The invention is described and illustrated in an exemplary embodiment.

Fig. 1

eine Pendelschranke in der Draufsicht,

Fig. 2

eine Einzelheit der Pendelschranke im Schwenkbereich,

Fig. 3

ein Schaltschema der Pendelschranke.

Show it:

Fig. 1

a pendulum barrier in top view,

Fig. 2

a detail of the swing barrier in the swivel range,

Fig. 3

a circuit diagram of the pendulum barrier.

According to FIG. 1, the passage to the passenger area of a bus is half closed by the pendulum brackets 2 and 2 '. From Fig. 2 it can be seen that the pendulum bracket have an extension 4 beyond the pivot point 3. The free end of the extension 4 is pivotally connected to the piston 6 of the hydraulic cylinder 5, the other end is pivotally connected to frame elements. The compressed air cylinders 5 are single-acting piston cylinders which have prestressed compression springs 7 on the side which is not pressurized with compressed air. The compressed air cylinder 5 is preceded by a preferably adjustable throttle valve 10 and a 3/2-way valve 9, which can be switched by the driver via a switch 8 that can be actuated at the driver's position to open the compressed air supply to the hydraulic cylinder. The main switch 8 is initially used to activate the wheelchair lift integrated in the bus; by turning on the switch from the driver, two functions are triggered simultaneously, on the one hand lifting the wheelchair lift, on the other hand opening the pendulum brackets 2, 2 'into the dashed line position, so that the wheelchair user passing through does not have to perform any opening action. If the driver now sees the passing process ended, he switches the main switch 8 to "off", as a result of which the compressed air supply to the compressed air cylinders 5 is interrupted. Thus, the springs 5 are put back into effect and the pistons 6 of the compressed air cylinders are pushed back into their starting position. The pendulum barrier is closed again. For normal passenger operation, the compressed air barrier can be opened by hand against the resistance of the compression springs 7 located in the cylinders. After passing the pendulum barrier, the pistons 6 are brought back by the compression springs 7, as a result of which the pendulum brackets return to their closed position.

Reference symbol list

1

Pendulum barrier

2, 2 '

Pendulum bracket

3rd

Pivot point of 2

4th

Extension of 2nd

5

Air cylinder

6

Piston of 5

7

Compression spring

8th

Main switch

9

magnetic valve

10th

Throttle valve

Claims (4)

Pendulum barrier at the passage to the passenger compartment of buses with wheelchair lift and a main switch for the wheelchair lift which can be operated from the driver's position, characterized in that the pendulum barrier (1) has at least one pendulum bracket (2, 2 ') with an extension (4) projecting beyond the pivot point (3) has, which is articulated to the piston (6) of another end of the frame-mounted, pivotable compressed air cylinder (5), the single-acting piston cylinder (5) has a compression spring (7) on the piston side not pressurized with compressed air and the compressed air cylinder (5) via the Main switch (8) with the interposition of a solenoid valve (9) can be acted upon or vented. Pendulum barrier according to claim 1, characterized in that two pendulum brackets (2, 2 ') are arranged at the passage to the passenger compartment, each of which closes or opens the passage approximately in half. Pendulum barrier according to claim 1 or 2, characterized in that a preferably adjustable throttle valve (10) is arranged between the solenoid valve (9) and compressed air cylinder (2, 2 '). Pendulum barrier according to Claims 1 to 3, characterized in that light or ultrasound sensors corresponding to the wheelchair are provided for opening and closing the pendulum barrier (1).

Images