FR2669074A1 - DOOR OPERATION AND LOCKING DEVICE FOR INDUSTRIAL VEHICLES FOR THE TRANSPORT OF PERSONS. - Google Patents

Abstract

Device for actuating and locking doors for industrial vehicles intended for the transport of persons comprising a double-acting main cylinder (7) having an opening chamber (8) and a closing chamber (9), a secondary cylinder (10 ) having a locking chamber (12) and an unlocking chamber (11), a first energy source (14), a first distributing valve (13) controlling the energy supply to the closing chamber (9) of the main cylinder (7) via a first supply circuit (18), when controlling the closing of the doors from the dashboard (3), and the power supply to the chamber d opening (8) of the main cylinder (7) via a second supply circuit (19), when controlling the opening of the doors (1 or 2) from the dashboard (3 ), characterized in that when the opening of the doors (1 or 2) is ordered from the t edge panel (3), the first distributor valve (13) also allows the power supply to the unlocking chamber (11) of the secondary cylinder (10), via a third supply circuit (20 ).

Description

ACTION AND LOCKING DEVICE

  DOORS FOR INDUSTRIAL VEHICLES FOR

FOR THE TRANSPORT OF PEOPLE

  The present invention relates to a device for actuating and locking the doors for

  industrial vehicles intended for the transport of people.

  The vehicles concerned by this invention are

  mainly public transport vehicles.

  These vehicles are generally fitted with a central door opening and closing control located on the driver's dashboard. The driver also has a control allowing him to lock or

  unlock the doors, centralized or not.

  In all cases, the locking and unlocking control must be able to be actuated from the inside, as from the outside of the vehicle. Indeed, it is mandatory that the opening of the doors is always possible, from the inside and the outside of the vehicle, even in the absence of the assistance effort, which can be electrical or mechanical, but which is most often provided by a hydraulic or pneumatic control fluid Furthermore, safety rules require that the final locking of the doors, carried out from the outside by the driver, when he abandons his vehicle, leaves a passenger who accidentally remains inside the vehicle, the possibility of unlocking

the doors and go out.

  The publication FR-2 555 239 describes a centralized electropneumatic door control device from the driving position of a vehicle. The device described comprises in particular a system for reversing the movement of the doors coming into action when a

2 2669074

  any resistance is detected during the closing movement Publication FR-2 489 403 relates to an electropneumatic device for maneuvering a bus door, equipped with an electronic device. This device has a door position rocker reproducing electronically at all times. door position, to automatically reverse

  its movement when a person is trapped.

  In the actuation and locking devices currently used, the central door opening and closing control is independent of the locking and unlocking commands. When the driver leaves his vehicle at the end of his service, he must close the doors from the central control on the dashboard, reopen one of the doors by actuating the interior emergency opening control, then close and lock this door from the outside If he forgets to perform the first these operations, he will not be able to close and lock the last door after getting out of the vehicle Furthermore, if he does not take care to unlock all the doors before starting, the doors that are not unlocked will not respond to the command general opening initiated during the first stop In the latter case, the restoration of a normal situation by actuation of the central unlocking control illage, while some doors are already

  open, is detrimental to all mechanisms.

  In order to simplify the operation of the doors by the driver, the invention provides an automatic interaction system between the actuation control and the

lock command.

  According to one embodiment of the invention, the device for actuating and locking the doors for industrial vehicles intended for the transport of people comprises a double-acting main cylinder having an opening chamber and a closing chamber, a secondary cylinder having a locking chamber and an unlocking chamber, a first energy source, a first distributor valve controlling the supply of energy to the closing chamber of the main cylinder, via a first circuit d 'supply, when closing the doors from the dashboard, and the power supply to the opening chamber of the main cylinder via a second supply circuit, when ordering opening the doors from the dashboard This device is characterized in that when the doors are opened from the dashboard, the first The distributor valve also allows energy to be supplied to the unlocking chamber of the secondary cylinder, via

  a third supply circuit.

  According to one embodiment of the invention, the jack

  main has a flow limiter.

  According to one embodiment of the invention, when controlling the opening of the doors from the dashboard, the secondary cylinder sets in motion before the

main cylinder.

  According to one embodiment of the invention, the secondary cylinder actuates a bolt which is placed during locking in a keeper provided on the main cylinder -4-, this bolt withdrawing from the keeper during unlocking. According to one embodiment of the invention, the locking of the doors is controlled by a second distributor valve, which ensures the supply e of the locking chamber of the secondary cylinder by

  through a fourth supply circuit.

  According to one embodiment of the invention, the power supply to the locking chamber of the secondary cylinder is ensured from the first

energy source.

  According to one embodiment of the invention, the power supply to the locking chamber of the secondary cylinder is ensured from a second

  energy source independent of the first.

  According to one embodiment of the invention, the device comprises an interior and exterior unlocking control, associated with at least one of the doors, and independent of the first and of the second.

energy source.

  According to one embodiment of the invention, the interior and exterior unlocking controls are constituted by handles, mechanically connected to the

  leads by a common actuation cable.

  According to one embodiment of the invention, the interior and exterior unlocking controls are connected to a third energy source independent of the

first two.

  According to one embodiment of the invention, the energy

used is pneumatic.

  According to one embodiment of the invention, the energy

used is hydraulic.

  According to one embodiment of the invention, the energy

used is electric.

  According to one embodiment of the invention, the energy

used is mechanical.

  According to one embodiment of the invention, use is made

  simultaneously energies of different nature.

  According to one embodiment of the invention, the interior and exterior emergency opening controls are mounted between the respective supply circuits of the opening and closing chambers of the main cylinder, so as to obtain the emergency opening. by connecting the two chambers of the main cylinder. According to one embodiment of the invention, the unlocking chamber of the secondary cylinder is connected to the supply circuit of the opening chamber of the main cylinder at a point located downstream of the stitching point of the opening control of interior emergency and upstream of the stitching point of the exterior opening control, so that the actuation of the interior emergency opening command, and not that of the exterior emergency opening command, allows one operation opening a door

locked.

  Other features and advantages of the invention

  will emerge more clearly from the description which will

  follow from a nonlimiting embodiment, from the invention as well as from the appended drawings in which: FIGS. 1 and 2 locate the location of the various controls on the vehicle, FIG. 3 provides a block diagram of the device. The industrial vehicle for transporting people shown in FIGS. 1 and 2 comprises a front door (1) and a central door (2), but the invention is applicable without any restriction to vehicles having a greater number of doors. used for actuating and locking the doors can be hydraulic, pneumatic, mechanical or electric On the dashboard (3), the driver has a control (4) for opening and closing the leaves for each door. locking is controlled from outside the vehicle In the present case, it is unique, that is to say that it exists only with one door. It could possibly be present on all the doors or some only. door (1) and (2) is associated with an interior unlocking control (5), and with door 1 is associated an exterior unlocking control (6), which could also be present at all or some doors s only The opening and closing of the doors is ensured by a double-acting main cylinder (7), having an opening chamber (8) and a closing chamber (9) Locking and unlocking are the work of '' a secondary cylinder (10) also double acting, comprising a locking chamber (12) and a

unlocking chamber (11).

  -7- In general, and in the case of the door (1), where all the basic devices (exterior locking, exterior unlocking) are present, we can describe the overall device as follows: ïb A first valve distributive (13) actuated from the dashboard (3) and connected to a first energy source (14) ensures the supply of the closing chamber (9) of the main cylinder (7) via a first supply circuit (18) and the supply of its opening chamber (8) via a second supply circuit (19), as well as the supply of energy to the unlocking chamber (11) of the secondary cylinder (10), via a third supply circuit (20) A second distributing valve (15), connected to the first energy source (14) or to a second source d energy (16) controls the energy supply to the locking chamber ( 12) of the secondary cylinder (10) via a fourth circuit

supply (21).

  When the doors are opened from the dashboard (3) of the vehicle, the first distributor valve (13) triggers the supply of energy to the opening chamber (8) of the main cylinder (7) and the unlocking chamber (11) of the secondary cylinder of the corresponding door If the doors (1) or (2) are locked, the secondary cylinder (10) is initially set in motion towards its unlocking position, so to release the main cylinder (7) The secondary cylinder (10) actuates for this purpose a bolt (22) housed inside a keeper (not shown) of the main cylinder (7) in the closed position during unlocking, the bolt (22) is withdrawn -8from the strike The main cylinder (7) is then free to move In a second step, the main cylinder (7) moves to its open position, without further intervention on the part of the conductor The main cylinder (7) starts to move after the cylinder condaee (10) thanks to a flow limiter (not shown) which slows down its energy supply Its delay is also due to its size and the effort required to take off the doors (1, 2) If the door (1, or 2) is unlocked, only the main cylinder corresponding to it

(7) is put into action.

  Unlocking can also be controlled independently of the central opening and closing control (4). This arrangement is necessary, in particular to allow a person locked by mistake inside the vehicle, to exit For this purpose, the device can have an interior unlocking handle (5) for each door (1, 2) The door (1) has an unlocking handle at that time

  interior and an exterior release handle.

  This external unlocking handle does not exist at the door (2) but could be there. These two handles can be associated in a single mechanism connected to the bolt (22) in order to control the unlocking In the case where the two handles external and internal (5, 6) exist, they are connected to the bolt (22) by an actuating cable (23) Their control can be direct or be carried out by the intermediary of a third source of energy (17 ) independent of the first and

  second source of energy (14, 15).

  -9- In the case of pneumatic doors, for which the emergency opening is obtained by bringing the two chambers (8, 9) of the main cylinder into communication, another solution will be applied, consisting in connecting the unlocking chamber (11 ) said secondary cylinder (10) to the supply circuit (19) of the opening chamber (8) of the main cylinder (7), at a point (24) located downstream of the stitching point (25) of the control interior emergency opening (27), and upstream of the stitching point (26) of the exterior emergency opening control (28), so that only the actuation of the interior emergency opening control ( 27) actuates the unlocking device and allows, in a single operation from inside the vehicle, the opening of a locked door. The closing of the doors is controlled from the dashboard (3), under the control of the first distributor valve (13) by supplying the closing chamber (9) of the main cylinder (7) from the first source of energy (14), via the first circuit

supply (18).

  The locking of the doors is controlled by the second distributor valve (15) which can supply the locking chamber (12) of the secondary cylinder (10), via the fourth supply circuit (21). , either from the first energy source (14) if the order is made from the dashboard, or from the second energy source (16), if the order is made from

  from the outside, centralized or not.

-

Claims (5)

  1) Device for actuating and locking doors for industrial vehicles intended for the transport of persons comprising a double-acting main cylinder (7) having an opening chamber (8) and a closing chamber (9), a secondary cylinder (10) having a locking chamber (12) and an unlocking chamber (11), a first energy source (14), a first distributing valve (13) controlling the energy supply to the closing chamber (9 ) of the main cylinder (7) via a first supply circuit (18), when controlling the closing of the doors from the dashboard (3), and the supply of energy to the opening chamber (8) of the main cylinder (7) via a second supply circuit (19), when controlling the opening of the doors (1 or 2) from the dashboard (3), characterized in that when the doors are opened (1 or 2) from the dashboard (3), the first distributing valve (13) also allows the power supply to the unlocking chamber (11) of the secondary cylinder (10), via a third power circuit (20).   2) actuation and locking device according to claim 1, characterized in that the main cylinder (7) comprises a flow limiter 3) actuation and locking device according to claim 1, characterized in that, during 11- the command to open the doors (1 or 2), from the dashboard (3), the secondary cylinder (10) sets in motion before the cylinder main (7).   4) actuation and locking device according to claim 1, characterized in that the secondary cylinder (10) actuates a bolt (22) being placed during locking in a keeper provided on the main cylinder (7), this bolt ( 22) withdrawing from the door release when unlocking.    ) Actuating and locking device according to claim 1, characterized in that the locking of the doors is controlled by a second distributor valve (15), which supplies the locking chamber (12) of the secondary cylinder (10 ), through a   fourth supply circuit (21).   ) Actuating and locking device according to claim 5, characterized in that the supply of the locking chamber (12) of the secondary cylinder (10) is ensured from the primary source of energy (14).   ) Actuating and locking device according to claim 5, characterized in that the energy supply to the locking chamber (12) of the secondary cylinder (10) is ensured from a second energy source (16 ) independent of the first.   12-) Actuating and locking device according to claim 1, characterized in that it comprises an internal (5) and external (6) unlocking control associated with at least one of the doors and independent of the first and the "second source of energy (14, 16)) actuation and locking device according to claim 8, characterized in that the unlocking controls inside (5) and outside (6) are constituted by handles mechanically connected to the bolt (22) by cable common actuator (23).   ) Actuating and locking device according to claim 8, characterized in that the interior (5) and exterior (6) unlocking controls are connected to a third energy source (17) independent of the first and the   second source of energy (14, 16).   11) Actuating and locking device according to   any one of claims 1 to 8,   characterized in that the energy used is pneumatic. 12) Actuating and locking device according to   any one of claims 1 to 8,   characterized in that the energy used is hydraulic. 13) Actuating and locking device according to   any one of claims 1 to 8,   characterized in that the energy used is electric. 13 -) Actuating and locking device according to   any one of claims 1 to 8,   characterized in that the energy used is mechanical. ) Actuating and locking device according to   any one of claims 1 to 8,   characterized in that simultaneous use is made of energies of a different nature.   ) Actuating and locking device according to claim 10, characterized in that the interior and exterior emergency opening controls (27, 28) are mounted between the supply circuits (18, 19) of the opening chambers and closing (8, 9) of the main cylinder (7) so as to obtain the opening of a door by connecting the two chambers (8, 9) of the cylinder main (7).   17) An actuating and locking device according to claim 16, characterized in that the unlocking chamber (11) of the secondary cylinder (10) is connected to the supply circuit (19) of the opening chamber (8) the main cylinder (7) at a point (24) located downstream of the stitching point (25) of the interior emergency opening control (27) and upstream of the stitching point (26) of the exterior unlocking control (28), so that the actuation of the interior emergency control (27), and not that of the exterior unlocking control (28) allows, in a single operation, the opening of a locked door.