EP3717328A1 - System for locking a leaf of a landing door - Google Patents

Abstract

The invention relates to a system (1) for locking a leaf of a loading bay landing door, the leaf being capable of translating horizontally in a plane of the leaf between open and closed positions, including: - a support rail mounted on the leaf and including a receiving notch; - a motor body (20) forming the stator of a motor (12) for driving the leaf and mounted to rotate freely about a driving axis on a gear block (30); - a locking roller (22) mounted to project from the body of the motor (20) and arranged so as to: - roll along the support rail during a movement of the leaf; and - be inserted, by a rotation of the engine body, into the receiving notch when the leaf reaches the closed position or the open position in order to lock same.

Description

 LATCHING SYSTEM OF A PALLET DOOR VANTAIL

The invention relates to the field of landing landing doors. More particularly, the invention relates to a locking system of a sliding door leaf door and a landing platform door equipped with such a locking system.

The wharf façades make it possible to isolate the wharf platform as such from the traffic lane along which the wharf extends, when no traffic occurs on the lane. However, when a train is parked alongside the wharf, the wharf facade must allow users to access the passenger cars of the stationary trainset. For this, the dock facade comprises a series of landing doors arranged to extend in view of the access doors of passenger cars likely to park along the wharf. In a manner known per se, a platform landing door forms a module which is composed of at least one fixed panel and an associated sliding leaf that can move between an open position and a closed position (and vice versa) in one direction. horizontal in the plane of the leaf and substantially parallel to a platform nose on which is positioned the landing door. In the open position, the leaf releases at least in part an opening allowing a passage of users adjacent to the fixed panel of the landing door. In the closed position, the leaf obstructs this opening. For this, a drive system comprising a motor is provided between the fixed panel and the associated sliding leaf to move the associated sliding leaf in its translation movements between the open and closed positions. In general, the platform landing doors comprise two pairs of fixed panel / sliding leaf positioned mirror symmetrically. The two fixed panels are separated from each other by a door sill, the assembly defining the opening for the passage of users. The two sliding leaves then have the possibility of moving according to horizontal translation movements in the plane of the leaves which are symmetrical to each other between the closed position and the open position and vice versa. Each sliding leaf can have a drive system and an associated motor. Alternatively, the assembly may comprise a drive system and a motorization common to the two associated leaves.

When there is no train stationing along the wharf, the landing doors remain in the closed position. A locking system is provided so as to keep the leaves in this position in any situation as long as a train does not park alongside the platform, unless a specific unlocking means is used, such as an order of opening, a manual unlocking means, including a maintenance key.

Currently, the locking systems operate on the principle of preventing any translation of the sliding leaves of the landing doors from the closed position. To this end, the current locking systems comprise a hook which is rotating and which acts on a cam and mechanically locks a fixed finger installed on the sliding door leaf door to lock in position, and at the moment when the sliding leaf is arrived in closed position. The rotation movement of the hook blocking in the closed position the sliding leaf occurs under the effect of the pressure that is exerted by the finger on the latch during automatic or manual closing of the sliding leaf. Conversely, the automatic unlocking is achieved by a direct activation of a lever by an electromagnet, the movement of the sliding leaf being ensured by a motor. Such a locking system is complex and requires electronic synchronization with the implementation of the motorization moving the sliding door leaf door.

An object of the invention is to provide a locking system of a sliding door leaf landing door that is simple, inexpensive and reliable in its operation.

To this end, it is provided according to the invention, a locking system of a sliding leaf of the platform landing door, the sliding leaf can move relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the leaf releases or obstructs at least part of an opening adjacent to the fixed panel, the locking system comprising:

A support rail fixedly mounted on the sliding leaf and having a receiving notch;

A motor body forming the stator of a drive motor of the sliding leaf and rotatably mounted on a motor axis on a gear unit;

A locking roller mounted projecting on the motor body and arranged to: roll along the support rail during a movement of the sliding leaf; and engage, by rotation of the motor body, in the receiving slot when the sliding leaf reaches a given position to lock it, the receiving notch being arranged on the support rail so that this given position is the closed position or the open position.

Advantageously, but optionally, the locking system according to the invention has at least one of the following additional technical characteristics:

- The receiving notch is arranged at one end of the support rail so that the given position is the closed position;

 - The support rail comprises an additional receiving notch, the two receiving notches being arranged on the support rail so that to lock the sliding leaf, the locking roller engages, by the rotation of the body motor, in a first of the receiving notches when the sliding leaf reaches the closed position and in a second of the receiving notches when the sliding leaf reaches the open position;

 - It comprises a fixing bracket of the locking system according to the invention on a fixed panel of the door bearing relative to which the sliding leaf moves; in particular, the gear unit may be integral with the fixing support;

 the gear block has a lateral output of a given axis; in particular, the axis of the lateral outlet is perpendicular to the motor axis; thus, as soon as a driving torque is applied by the motor, the motor body is rotated about said motor axis while the rotor remains stationary;

the gear unit has an input, referred to as the input of the gear unit, for performing a drive of the lateral output, - the gear unit comprises a gearbox allowing to have a lower rotation in said lateral output at the input of the gear unit; in particular, the motor can be mounted in rotation on the gearbox;

- The gear unit comprises a bevel gear, for transmitting the input drive of the gear block along the axis of the motor at said lateral output; in particular, the angle gear can be formed by the gearbox;

 Said lateral outlet comprises a drive pulley of a belt;

 The motor body extends along said motor axis; in other words, this motor axis is therefore coaxial with a rotor axis of the motor;

 - It comprises a coupling device for mounting the motor body on the gear unit; in particular the coupling device may be a ball bearing;

- At an output of the rotor axis, the motor body comprises a ring cooperating with said coupling device, allowing free rotation of the motor body on the gear block, the rotor axis of the motor cooperating with an input of the gear block for performing a drive of the lateral output;

 - It comprises an elastic element for returning the locking roller in the receiving slot;

 - It comprises a stop protruding from the motor body arranged to limit a rotation of the motor body during disengagement of the locking roller of the receiving notch;

The stop is distinct from the locking roller; in particular, the stop may be arranged to be in contact with a support part of a support of attaching the motor, when the locking roller is disengaged from the receiving slot;

 the stop may be formed by the locking roller, the abutment being arranged to be in contact with a rolling track arranged facing said support rail, when the locking roller is disengaged from the notch receiving, the locking roller being arranged to come to roll both along said support rail and on the running track during a movement of the sliding leaf;

 - it has a manual unlocking mechanism;

 - the manual unlocking mechanism includes:

 - On the one hand, a cam integral with the motor body 20, for example of the ring;

 - on the other hand, an inclined pull,

 the manual unlocking mechanism being arranged in such a way that a displacement of the sloping zipper, in particular substantially parallel to the motor axis, allows the inclined zipper to come into contact with the cam, the cam then sliding on the inclined zipper when moving, until the locking roller is clear of the receiving notch;

 - The inclined pull can be operated by a cable, in particular fixed on a finger of the slanted zipper; for example, a manual pulling of the cable can come to move the inclined puller which comes into contact with the cam, the traction being continued, the inclination of the inclined puller requires, via the cam sliding on the inclined pull, the body of the motor to rotate along the motor axis until the locking roller is clear of the receiving slot;

- The movement of the zipper continues until it comes to bear on a stop, in particular adjustable, linked to the sliding leaf. It is also provided, according to the invention, a platform landing door comprising a fixed panel and a sliding leaf that can move relative to the fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the leaf releases or obstructs at least in part an opening adjacent to the fixed panel, and a locking system of the leaf sliding at least in the open position having at least one of the preceding characteristics.

Advantageously, but optionally, the landing door according to the invention has at least one of the following additional technical characteristics:

 - the locking system is integrated in the landing door;

 it comprises a belt drive system of the sliding leaf, the locking system being integrated into the motorization of the belt drive system;

 - said drive pulley, mentioned above, drives the belt driving the sliding leaf;

- The belt drive system links two sliding leaves of the landing door.

Other features and advantages of the invention will appear in the following description of an embodiment given purely by way of illustration. In the accompanying drawings:

- Figure 1 is a three-dimensional partial view of a sliding door leaf drive system comprising a locking system according to the invention; FIG. 2 is a three-dimensional view of the locking system according to the invention of FIG. 1;

FIG. 3 is a partial view in longitudinal section of the locking system of FIG.

2;

 - Figure 4 is a sectional view along IV-IV of the locking system of Figure 2; and,

 FIG. 5 is a three-dimensional partial view illustrating a manual unlocking mechanism of the locking system of FIG. 2.

In the remainder of the description we will describe a locking system 1 according to the invention integrated into a platform landing door comprising a belt drive system 2 or sliding leaves. Such a belt drive system 2 is described in detail in document FR3039581 or, alternatively, in document CN203361842, documents to which it is possible to refer for further information. Without describing it in more detail here, with reference to FIG. 1, the belt drive system 2 links the two sliding doors 210 of the landing door. For this, two belts 6 and 7 for driving the leafs 210 walk under a door sill between the two fixed panels of the landing door. A driving pulley 4, driven by a motor 12 via a gear block 30, cooperates with the first belt 6 to move one of the sliding leaves 210, the other of the sliding leaves 210 being driven via the second belt 7 by one of the sliding leaves 210 symmetrically and synchronously.

The embodiment of the locking system 1 according to the invention is here incorporated into the motorization of the belt drive system 2. The locking system 1 according to the invention comprises a support rail 3 which is secured. sliding leaf 210 adjacent to the engine. At one end of the support rail 3, the latter comprises a receiving notch 31: this receiving notch 31 is positioned such that in the closed position of the sliding leaf 210, the receiving notch 31 comes to placed along the motor 12 (as shown in Figure 1): the support rail 3 and the receiving slot 31 follow the sliding leaf 210 in these movements between its closed and open positions.

Referring to Figures 2 to 4, the locking system 1 according to the invention comprises a fastening support 10 of the locking system 1 according to the invention on a fixed panel of the landing door relative to which the sliding leaf 210 moves . On the other hand, the locking system 1 according to the invention comprises a gear unit 30, a lateral output of axis P includes the drive pulley 4 of the belt 6. The gear unit 30 is here secured The locking system 1 according to the invention further comprises a motor 12 having a motor body 20 forming the stator and extending along a longitudinal axis M said "motor axis", coaxial with a rotor axis of the motor 12. At an output of the rotor axis, the motor body 20 comprises a ring 21 cooperating with a coupling device 40, here a ball bearing, allowing a free rotational mounting the motor body 20 on the gear unit 30, the rotor axis of the motor 12 cooperating with an input of the gear unit 30 to perform a drive of the lateral output P. It should be noted that the axis of the lateral outlet P is perpendicular to the motor axis M. Thus, as soon as a driving torque is ap plicated by the motor 12, the motor body 20 is rotated about the axis M while the rotor remains stationary. In a manner not shown, the gear unit may comprise a gearbox allowing a lower rotation in said lateral output P than at the input of the gear unit 30. In particular, the motor can be mounted in rotation on the gearbox .

For example, the gearbox may form a bevel gear, for transmitting the input drive of the gear block 30 along the axis of the engine to said lateral output

P.

In order to limit this rotation of the motor body 20 during a displacement of the sliding leaf 210 from the closed position, the locking system 1 according to the invention comprises a stop 23 integral with the motor body 20 and extending radially projecting centrifugally said motor body 20. The abutment 23 bears on a bearing portion 11 of the fixing support 10. Once the abutment 23 bears against the bearing portion 11 of the attachment support 10, the body motor 20 resumes its function as a stator and the rotor of the motor 20 starts to rotate, driving the drive pulley 4 via the gear block 30. As an alternative embodiment, the stop 23 is mounted similarly on the ring 21.

On the other hand, in order to limit the rotation of the motor body 20 during a displacement of the sliding leaf 210 from the open position, the locking system 1 according to the invention comprises a locking roller 22 mounted at one end of an axis 221 secured to the ring 21 and extending radially projecting centrifugally from said ring 21. The locking roller 22 bears on the support rail 3. Once the locking roller 22 bears on the 3, the motor body 20 resumes its stator function and the rotor of the motor 20 starts to rotate, driving the drive pulley 4 via the block The sliding leaf 210 is then in translation movement from the open position to the closed position, the locking roller 22 then rolls along the support rail 3 in the direction of the receiving notch 31. Once the closed position reached by the sliding leaf 210, the locking roller 22 falls into the receiving notch 31 under the effect of a residual engine torque. This locks the sliding leaf 210 in the closed position, the locking roller 22 pressing immediately on the sides of the receiving notch 31, thus preventing any attempt to inadvertently open said sliding leaf 210. As an alternative embodiment, the locking roller is mounted similarly on the motor body 20.

In order to ensure that, in the closed position of the sliding leaf 210, the locking roller does not come out of the receiving notch 31, the locking system 1 according to the invention comprises an elastic return element 24, here under the shape of a tension spring, acting in a direction substantially perpendicular to a radius of the ring 21 (or the motor body 20). This elastic return member 24 is fixed at a first end 241 to the ring 21 (or alternatively to the motor body 20) and at a second end to the attachment support 10. This second end is not visible in Figure 2, but we can see a rod 242 attached to the support 10 and to which is attached this second end.

It should be noted that the relative positioning of the abutment 23 and of the shaft 221 carrying the locking roller 22 is such that when the abutment 23 bears against the bearing portion 11 of the fixing support 10, the roller locking 22 is disengaged from the receiving notch 31 and then at least in contact with the support rail 3 along which it can roll while the sliding leaf 210 is driven by the engine

12 from its closed position to its open position. Of course, the engine torque allowing the release of the locking roller 22 of the receiving notch 31 is greater than a return torque applied by the elastic element 24 of return.

Here the stop 23 is therefore distinct from the locking roller. However, according to an alternative embodiment not shown, the stop may be formed by the locking roller, the stop being arranged to be in contact with a running track arranged vis-à-vis said support rail, when the locking roller is disengaged from the notch. In this case, the locking roller is arranged so as to roll both along the support rail and on the rolling track during the movement of the sliding leaf.

If necessary, the locking system 1 according to the invention comprises a manual unlocking mechanism. This mechanism includes:

- On the one hand, a cam 25 integral with the motor body 20 or the ring 21;

 - On the other hand, an inclined zipper 82 operated by a cable 80 fixed on a finger 81 of the inclined zipper 82.

A manual pulling of the cable 80 moves the sloping zipper 82 which comes into contact with the cam 25. As the traction continues, the inclination of the inclined zipper 82 forces, via the cam 25 sliding on the sloping zipper 82, the body of the motor 20 to be rotated along the axis M until the maximum stop 23 comes to rest on the support portion 11 of the fixing support 10, the locking roller 22 then being cleared of the receiving notch 31. It follows from the above that such a structure of the locking system 1 according to the invention allows a significant reduction in the number of parts, a simple installation, avoid the use of a dedicated electromagnet, and use the driving motor for sliding leaves controlling directly the locking / unlocking.

Note that the support rail 3 may include an additional receiving notch, not shown in the example shown but positioned further to the right, with respect to Figure 1. The locking roller 22 engages in this notch when the sliding leaf 210 reaches the open position. It is also possible to simplify also the blocking in the open position.

Of course, it is possible to bring to the invention many modifications without departing from the scope thereof.

Claims

1. Locking system (1) of a sliding leaf (210) of platform landing door, the sliding leaf being movable relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions. closed door in which the leaf releases or obstructs at least part of an opening adjacent to the fixed panel, characterized in that the locking system comprises:  A support rail (3) fixedly mounted on the sliding leaf and having a receiving notch (31);  A motor body (20) forming the stator of a motor (12) for driving the sliding leaf and rotatably mounted along a motor axis (M) on a gear unit (30);  A locking roller (22) projecting from the motor body (20) and arranged to:  come rolling along the support rail during a movement of the sliding leaf; and  engaging, by a rotation of the motor body, in the receiving notch (31) when the sliding leaf reaches a given position to lock it, the receiving notch being arranged on the support rail so as to that this position is the closed position or the open position. 2. Locking system according to claim 1 characterized in that the receiving notch (31) is arranged at one end of the support rail (3) so that the given position is the closed position. Locking system according to claim 1 or 2, characterized in that the support rail (3) comprises an additional receiving slot, the two receiving slots being arranged on the support rail so that lock the sliding leaf (210), the locking roller engages, by the rotation of the motor body, in a first (31) of the receiving notches when the sliding leaf reaches the closed position and in a second of the receiving notches when the sliding leaf reaches the open position. Locking system according to one of Claims 1 to 3, characterized in that the gear unit (30) has a lateral outlet of a given axis (P). Locking system according to Claim 4, characterized in that the gear unit has an input, referred to as the input of the gear unit (30), for carrying out a drive of the lateral output (P), the block of gearbox comprising a gearbox for having a lower rotation in said lateral output (P) than at the input of the gear unit (30). Locking system according to Claim 5, characterized in that the motor is rotatably mounted on the gear unit. 7. Locking system according to one of claims 4 to 6, characterized in that the lateral outlet (P) comprises a driving pulley (4) of a belt (6). 8. Locking system according to one of claims 1 to 7, characterized in that it comprises a coupling device (40) for mounting the motor body on the gear block. 9. Locking system according to one of claims 1 to 8, characterized in that it comprises a resilient element (24) for returning the locking roller (22) in the receiving slot (31). 10. Locking system according to one of claims 1 to 9, characterized in that it comprises a stop (23) projecting from the motor body (20) arranged to limit a rotation of the motor body during a clearance of the locking roller of the receiving notch. 11. Locking system according to one of claims 1 to 10, characterized in that it comprises a manual unlocking mechanism (25, 80, 81, 82). 12. Locking system according to claim 11, characterized in that the manual unlocking mechanism comprises:  on the one hand, a cam (25) integral with the motor body (20);  on the other hand, an inclined pull (82), the manual unlocking mechanism being arranged in such a way that a movement of the inclined pull tab allows the inclined pull to come into contact with the cam, the cam then sliding on the inclined pull when moving, until the locking roller (22) is released from the receiving slot (31). 13. Locking system according to claim 12, characterized in that the movement of the inclined pull (82) is substantially parallel to the motor axis (M). 14 Landing landing platform door comprising a fixed panel and a sliding leaf (210) movable relative to the fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the leaf releases or obstructs at least partly an opening adjacent to the fixed panel, characterized in that it comprises a locking system (1) of the sliding leaf at least in the open position according to one of claims 1 to 13. Landing door according to claim 14, characterized in that the landing door comprises a belt drive system (2) of the sliding leaf (210), the locking system (1) being integrated into the motorization of the drive system. belt. 16. Landing door according to claim 15 wherein the locking system (1) is according to one of claims 1 to 13 when taken in combination with claim 7, characterized in that said drive pulley (4) drives the belt (6) driving the sliding leaf (210).