FR2846024A1 - Train driver cab door lock has output sleeve to receive handle locking lug and moved between locking and release positions by key via gear drive - Google Patents

Abstract

The train driver cab door lock actuator moves the lock lug (36), on the opposite side of the door to the handle (34), between locking and release positions. The actuator (24) has an output sleeve (76) connected to the lug to actuate it and gear drives move the sleeve between free and blocking conditions under the control of a key at one side of the door.

Description

The present invention relates to an actuation module for a lock

  mounted on a door, the lock comprising - a handle disposed on a first side of the door, the handle being movable between an open position and a closed position of the door, - a locking member which is located on a second side of the door opposite said first side, member which is movable between blocking and release positions and which is adapted to bring the lock between corresponding blocking and release configurations of the handle, the locking module being adapted to drive the actuator between its positions of

blocking and release.

  The present invention applies in particular to door locks for access to driver's cabs

of railway vehicles.

  Door locking devices are known

  access to the cabs of driver's cabs for rail vehicles.

  Such devices generally include a main lock having a latch bolt which is adapted to keep the door closed and which is actuated by a first handle, disposed on the inside of the door. The known devices also include a second handle, disposed on the outside of the door. The second handle is offset downward relative to the first handle and allows the door to be opened from the platform. The second handle is connected to the main lock by 30 rods, allowing the actuation of the latch bolt from

this lock.

  The second handle is part of an auxiliary lock which allows this second handle to be blocked in order to prevent access to the driver's cabin.

  outside. Auxiliary locks can be operated with a simple square key and are unsafe.

  However, replacing these auxiliary locks with more secure locks is very expensive and results in significant assembly time. However, a railway vehicle cannot remain

  generally only 24 hours in a service center.

  This is why the invention aims to propose a device which makes it possible to increase the security of access 10 of a lock mounted on a door, while allowing a

quick assembly.

  To this end, the invention relates to an actuation module of the aforementioned type, characterized in that it comprises an output member adapted to be coupled to the locking member for its drive, and means for driving the output member between a locking configuration where the locking member is in its locking position and a release configuration in which the locking member is in its release position under the action of first ways

  forming a key, from said first side of the door.

  According to particular embodiments, the module comprises one or more of the following characteristics: - the drive means comprise first and second devices for driving the output member, and each of the first and second devices for drive is adapted to drive the output member independently of the other drive device, said first drive device is adapted to be driven by said first key means, and said second drive device is adapted to be driven by second key forming means, distinct from the first key forming means; - Said first drive device comprises an electric actuator, in particular an electric motor, connected to the output member by transmission means; said second drive device comprises a safety cylinder offset from the actuating member in the plane of the door; - The security cylinder comprises an outer end, which in the mounted state protrudes from the surface of the door on said first side, and the module comprises a protective block 10 suitable for sealingly separating the outer end from the environmental safety cylinder; - at least one of the drive devices comprises a clutch device which is adapted to connect a receiving member of one of the key means to the outlet member only when the key forming means cooperate with the 'receiving agency; the module comprises a third device for driving the output member, adapted to be actuated by a handle disposed on said second side of the door in the assembled state; and - the module includes a suitable mounting plate

  to fix the module relative to the lock, and a recess intended to be crossed by the locking member is provided in the mounting plate.

  The invention further relates to an assembly comprising a lock which comprises a handle disposed on a first side of a door, the handle being movable between an open position and a closed position of the door, and a member a locking device which is located on a second side of the door opposite said first side, which is movable between locking and release positions and which is adapted to bring the lock between a locking configuration of the handle and a configuration of release of the handle, characterized in that it

  further includes a module as defined above.

  The invention will be better understood on reading the

  description which follows, given solely by way of example, and made with reference to the accompanying drawings on

  which: - Figure lA is an exploded perspective front view of a part of a door comprising an auxiliary lock and a module according to the invention; - Figure 1B is an exploded exploded perspective view from behind of the assembly of Figure lA; - Figure 2 is a three quarter front view of the module according to the invention, in the unassembled state Figure 3 is a view of the module according to the invention corresponding to Figure 2, a mounting plate being removed; - Figure 4 is a rear quarter view of the module according to the invention in the unassembled state; Figure 5 is a view corresponding to Figure 20 4, a mounting plate being removed; and - Figures 6A and 6E are views in longitudinal section of a module safety cylinder

actuator according to the invention.

  FIGS. 1A and 1B show, in exploded view, a lower part of a door 2 of a railway vehicle, in particular an access door to the cab.

locomotive operator station.

  Door 2 has an exterior side, to the right in Figure 1A, and an interior side, to the left in Figure 30 1A. The door 2 delimits an opening 20 through

  receiving an auxiliary lock 22. An actuating module 24 of the auxiliary lock is mounted on the inside of the door 2. The receiving opening 20 has a rectangular shape having two small concave sides.

  Furthermore, two mounting holes 26 are provided in the door 2, on one side and on the other of the opening 20. A rod 28 is connected to the actuation mechanism of the latch bolt of a main lock (not shown) serving 5 to block the door 2 in the closed state. This main lock is located at the top of door 2.

  In addition, a circular access opening 30 is formed in the door 2, offset downward relative to

reception opening 20.

  The auxiliary lock 22 is known per se. She

  includes a base body 32, an opening handle 34 located on the outside of the door 2, an actuation shaft 36 connected to a locking mechanism 38, as well as a locking and unlocking handle 40 located on the side 15 inside the door (Fig. 1B).

  The basic body 32 has an external shape

  complementary to the receiving opening 20 of the door 2 and comprises a fixing flange 42 provided with two fixing holes 44, which coincide, in the assembled state, with the mounting holes 20 of the door 2.

  The opening handle 34 is connected to the base body 32, movable in rotation about an axis XX, between a horizontal rest position as shown in the Figures, and an inclined position for opening the door 2. 25 The actuation shaft 36 passes through the base body 32 and is arranged coaxially with the axis XX, in a through opening 46 formed in the handle 34. The actuation shaft 36 ends in two end pieces added to the four sides outside 48 and inside 50. It is rotatable in a range of 900 around the axis XX, between

  blocking and release positions.

  In the locking position of the shaft 36, the opening handle 34 is locked in its horizontal rest position and cannot be actuated. In the release position of the shaft 36, the opening handle 34 is free to rotate between its two rest positions

and opening.

  The locking mechanism 38 being known per se, it will not be described in more detail. The actuation module 24 is adapted to drive the actuation shaft 36 between its two positions

blocking and release.

  The actuation module 24 comprises a support 52 10 comprising two rectangular mounting plates proximal 54 and distal 56, having the same size and being arranged parallel to one another. The support 52 also includes a support block 58 and two spacers

  , 62 arranged between the two mounting plates.

  The proximal mounting plate 54 is pressed against the interior surface of the door 2, while the

  distal mount 56 is spaced from door 2.

  A receiving recess 64 passing through (FIG. 1B) is formed in the proximal mounting plate 54, recess 20 whose shape is complementary to the shape of the body of

  base 32 of the auxiliary lock 22.

  The proximal mounting plate 54 further comprises two mounting bores 66 arranged at locations corresponding to the mounting holes 26. The mounting plate 54 is fixed to the door 2 by means of screws

68 and 70 nuts.

  The actuation module 24 further comprises an output wheel 72 mounted movable in rotation about the axis X-X. On one side, this output wheel 72 comprises a hub 74 30 in which is formed a recess 76 (FIG. 1A) of a shape complementary to the internal hexagon socket 50. This recess 76 is open towards the door 2 and forms an outlet. On the other side, the hub 74 forms a four-sided tip 78 identical to the four-sided tip 50. This four-sided tip 78 protrudes from the surface facing away from the door 2 of the plate. distal mount 56

and receives the handle 40.

  In the assembled state, the locking mechanism 38 and the actuating shaft 36 extend through the

  recesses 20, 64, and the four-sided end piece of the actuating shaft 36 extends into the recess 76 of the hub 74.

  The output wheel 72 and the actuation shaft 36 are therefore

united in rotation.

  A toothed segment 80 (Fig. 5) is disposed on the output wheel 72 and extends over a sector of the circumference

of it.

  The actuation module 24 further comprises a first 82 and a second 84 devices for driving the output wheel 72, each of which is adapted to drive this wheel 72 independently of the other between positions which correspond to the positions of blocking and release

of the actuation shaft 36.

  In this case, the first drive device 82 comprises an electric motor 86 disposed

  in a corresponding recess in the support block 58 (see Figure 5). The motor drive shaft 86 is arranged along an axis Y-Y parallel to the axis X-X.

  The motor 86 is connected to the toothed segment 80 of the output wheel 72 by means of three reduction gears, two of which 88, 90 are visible in FIG. 5. The electric motor 86 is connected to control means (not shown ) by electrical wires 92, 94. These control means comprise for example a badge reader. They are adapted to drive the motor 86 as a function of the observation of the presence of a key, for example of a

empowered badge.

  The control means also comprise timing means adapted to power the electric motor 86 in order to bring the output wheel 72 to its locked position after the wheel 72 has remained

  in its liberation position for a while.

  The second drive device 84 comprises a safety cylinder 100 (FIG. 1A) and a drive pinion

  102 (Fig. 5) movable in rotation about an axis Z-Z, arranged parallel to the axis X-X. The drive pinion 102 meshes with the toothed sector 80 of the output wheel 72 and comprises a hub 104 in which is formed a slot 106 open towards the proximal mounting plate 54.

  The safety cylinder 100 is shown more in

detail in Figures 6A and 6B.

  The safety cylinder comprises a base body 108 in which are housed, movable in rotation around an axis 15 A-A, external 110 and internal rotors 112. The axis A-A

  extends parallel to the X-X axis.

  The outer rotor 110 comprises an opening 114 for receiving a mechanical key 116 (FIG. 6B), and the inner rotor 112 comprises a drive pin 118, which has a shape complementary to that of the slot 106 of the pinion

102.

  Needles 120 and springs 122 are interposed between the outer rotor 110 and the base body

108 as is known per se.

  The safety cylinder 100 comprises a clutch 124 which secures the tenon 118 in rotation only when the key 116 is fully inserted into the external rotor 110. The clutch 124 comprises two external 126 and internal 127 drawers which are arranged between the two rotors 110, 112 and which are axially movable along the axis AA, between declutching positions (Figure 6A) and

clutch (Figure 6B).

  The outer drawer 126 is rotationally connected to the exterior rotor 110, while the interior drawer 127 is rotationally connected to the rotor

interior 112.

  The outer drawer 126 and the inner drawer 127 include complementary profiles 128, 130. These two profiles 128, 130 are adapted to cooperate with one

  the other and are arranged in such a way that the external drawer 126 is free to rotate relative to the internal drawer 127 when the drawers 126, 127 are in the disengaged position and integral in rotation when they are in the clutch position.

  A spring 132, interposed between the external drawer 126 and the internal drawer 127, urges the drawers 126,

  127 to their declutching positions.

  Thus, when the output wheel 72 is driven by the motor 86 or by the locking handle 40 and when simultaneously the key 116 is not fully inserted in the external rotor 110, the rotation of the output wheel 72 is not transmitted to the outer rotor 110 which is

blocked by needles 120.

  Furthermore, the actuation module 24 comprises a protective block 140 fixed on the outside of the

  door, over access opening 30.

  The protective block 140 is suitable for sealingly separating the access opening 30 as well as the outer end of the security cylinder 100 from the opposite.

of the environment.

  Thus the module, and in particular the safety cylinder

  , is protected against rain and dirt.

  The protective block 140 comprises a recess 142 30 for receiving the end on the door side of the safety cylinder 100. Tapped blind holes 144 are provided in the protective block 140. These holes 144 extend parallel to the axis AA , and lead to the opening

access 30.

  Fixing screws 146 extend through bores 148 formed in the support 52 and through

the access opening 30.

  The actuation module according to the invention is mounted 5 on a door 2 provided with the auxiliary lock 22 as follows: Initially, the auxiliary lock 22 is fixed on

door 2.

  First of all, the access opening 30 is drilled in the door 2.

  The actuating handle 40 is removed from the tip

  inside four 50 of the actuating shaft 36.

  Then, the fixing screws 68 of the base body 32 are unscrewed and the actuation module 24 is inserted 15 on the base body 22, so that the hexagon socket 50 comes to be inserted in the recess 76 of the hub 74 of the output wheel 72. Then the support 52 is fixed to the base body and to the door 2 by the screws 68

and the nuts 70.

  The protective block 140 is applied to the outer side of the door 2 and is tightened against it by the screws 146. In other words, the door 2 is sandwiched between the proximal plate 54 and the block

  protection 140 as well as the flange 42.

  The electric motor 86 is connected to the reader

  badge by electrical wires 92, 94.

  The actuating handle 40 is plugged into the hexagon socket 78 of the output wheel 72 and is fixed there. Finally, the use of a square key is made impossible, for example by removing the tip with four

  outer sides 48 of the actuating shaft 36.

  The actuation module 24 according to the invention

works as follows.

  Door 2 is in the closed state and the

  blocking 38 is in its blocking configuration.

  When the driver wishes to open the door 2, he plugs the badge into the badge reader, which subsequently supplies the motor 86 with current. The output wheel 72 is driven from its locking position to its release position and brings, via the actuating shaft 36, the locking mechanism 38 to its

release position.

  Door 2 can then be opened by rotating

the opening handle 34.

  The delay means supply the motor

  electric 86 after a certain period of time, and the motor 86 drives the locking mechanism 38 to its locking position.

  During the rotation of the output wheel 72 by the motor 86, the outer rotor 110 of the safety cylinder 100 remains stationary since it is disengaged from the drive wheel.

exit 72.

  In the event of a power failure or in the event of an emergency, the locking mechanism 38 can also be actuated by the key 116 inserted into the external rotor 110. The operation is analogous to operation when the

  output wheel 72 is driven by the motor.

  The locking mechanism 38 can also be actuated from inside the locomotive by manipulation of

  the operating handle 40, without the need for a key.

  The actuation mechanism 24 according to the invention makes it possible to improve the security of the means of access to a locomotive with few modifications to the door 2. In fact, the only machining modification necessary is the cutting of

the access opening 30.

  Furthermore, the mechanism according to the invention has significant security thanks to the three independent actuation means 40, 82, 84.

Claims (9)

  1. actuation module for a lock (22) mounted on a door (2), the lock (22) comprising - a handle (34) disposed on a first side of the door (2), the handle (34) being movable between an open position and a closed position of the door (2), - a locking member (36) which is located on a second side of the door opposite said first side, member 10 (36) which is movable between locking and releasing positions and which is adapted to bring the lock (22) between corresponding locking and releasing configurations of the handle (34), the locking module (24) being adapted to drive the actuator (36) between its blocking and release positions, characterized in that it comprises - an output member (76) adapted to be coupled to the locking member (36) for its drive 20 and - drive means (82, 84) of the output member (76) between a configuration of locking o the locking member is in its locking position and a release configuration in which the locking member (36) is in its release position under the action of first key means, from said first side of the door.   2. Module according to claim 1, characterized in that the drive means comprise first (82) and second (84) devices for driving the output member (76), and in that each of the first (82) and second (84) drive device is adapted to drive the output member (76) independently of the other drive device, in that said first drive device (82) is adapted to be driven by said first key means, and in that said second drive device (84) is adapted to be driven by second key means (116), distinct from the first key means. 3. Module according to claim 2, characterized in   that said first drive device comprises an electric actuator, in particular an electric motor (86), connected to the output member (76) by transmission means (88, 90).   4. Module according to claim 2 or 3, characterized in that said second drive device (84) comprises a safety cylinder (100) offset from the member   actuation (36) in the plane of the door (2).   5. Module according to claim 4, characterized in that the safety cylinder (100) comprises an outer end, which in the mounted state projects from the surface of the door on said first side, and in that the module comprises a protective block (140) adapted for sealingly separating the outer end of the safety cylinder of the environment.   6. Module according to one of claims 2 to 5,   characterized in that at least one of the drive devices (84) includes a clutch device (124) 25 which is adapted to connect a receiving member (110) of one of the key means (116 ) to the outlet member (76) only when the key means cooperate with the receiving member (110).   7. Module according to any one of claims 30 2 to 6, characterized in that it comprises a third   device (78) for driving the output member, adapted to be actuated by a handle (40) disposed on said   second side of the door in the assembled state.   8. Module according to any one of claims   previous, characterized in that it comprises a mounting plate (54) adapted to fix the module relative to the lock (22), and in that a recess (64) intended to be crossed by the member lock (36) is formed in the mounting plate (54).   9. Assembly comprising a lock which comprises - a handle (34) disposed on a first side of a door (2), the handle (34) being movable between an open position and a closed position of the door ( 2), and - a locking member (36) which is located on a second side of the door (2) opposite said first side, which is movable between locking and release positions and which is adapted to bring the lock (22) between a locking configuration of the handle (34) and a release configuration of the handle, characterized in that it further comprises a module (24) according to one   any of the preceding claims. 2 0