Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B63/00—Locks or fastenings with special structural characteristics
  • E05B63/06—Locks or fastenings with special structural characteristics with lengthwise-adjustable bolts ; with adjustable backset, i.e. distance from door edge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/02—Door or gate operation
  • B66B13/14—Control systems or devices
  • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
  • B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
  • B66B13/185—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors electrical
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/02—Door or gate operation
  • B66B13/14—Control systems or devices
  • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
  • B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
  • B66B13/20—Lock mechanisms actuated mechanically by abutments or projections on the cages

Definitions

• the present invention relates to a positive security lock, in particular for the landing door of elevating devices.
• landing door locks are an essential element of user safety since they aim to prevent any opening of a landing door when a car is not opposite that -this.
• these locks provide the central elevator or elevator control system with logic safety signals making it possible to prohibit any operation of the cabin when the landing door is open or not closed properly.
• positive security locks comprising, within a housing capable of being fixed to the door frame of a landing door, a bolt for locking the door capable of cooperating with a fixed striker secured to the door leaf, an operating arm disposed on the housing so as to be able to be actuated on the front or lateral plane by a fixed or movable cam, and one or more electrical bolt contacts.
• a housing capable of being fixed to the door frame of a landing door
• a bolt for locking the door capable of cooperating with a fixed striker secured to the door leaf
• an operating arm disposed on the housing so as to be able to be actuated on the front or lateral plane by a fixed or movable cam, and one or more electrical bolt contacts.
• the object of the present invention is to remedy these drawbacks by proposing a lock which can be fixed without requiring precise positioning of the housing in relation to the door jamb.
• a lock for a positive security door in particular for an elevator landing door, comprising within a housing:
• a locking bolt arranged to slide in this housing and comprising a sliding core capable of cooperating in closing with a striker secured to the door leaf, - means for moving this bolt to an extreme locking position in which the latter is engaged in a locking piece secured to the door and containing the striker, these displacement means being controlled by the core, and - maneuvering arm means for controlling a withdrawal of the bolt towards an extreme withdrawal or unlocking position.
• this lock further comprises, within the housing, means for adjusting the extreme attack position of the bolt relative to the housing.
• the lock further comprises connecting rod means for converting a rotational movement of the operating arm means into a translation movement of the bolt, return means cooperating with the connecting rod means to permanently exert a thrust on the bolt, and rocker means arranged to lock the connecting rod means in a first position corresponding to the attack position of the bolt and determined by the adjustment means and to release said connecting rod means towards a second position corresponding to the bolt locking position in response to an action of the striker on the sliding core 1 inside the bolt.
• the rocker means comprise for example a part rotating around a rocker axis and comprising a first finger intended to come into abutment against an internal end of the core and a second finger provided to come into abutment against the connecting rod means, and the adjustment means comprise means for moving the position of the axis of the rocker arm within the housing.
• the means for moving the axis of rotation of the rocker arm include means for supporting the axis of rotation of the rocker arm which can be rotated around an axis of adjustment which is fixed relative to the housing and separate the axis of the rocker arm, and means for maintaining these support means in a determined adjustment position. This constitutes a very simple and compact way of carrying out a displacement of the axis of the rocker arm.
• These support means comprise for example a part in the form of a sector and the holding or positioning means are associated with clamping means accessible on the front face of the lock housing and which can implement, for example, a nut and / or a screw.
• return means comprising at least one compression spring cooperating with the connecting rod means and the rocker so as to place the bolt, either in the locking position corresponding to a permanent thrust exerted on the bolt via the connecting rod means, either in the attack position corresponding to a blocking of the stroke of said connecting rod means by the rocker arm.
• the return means further comprise a connecting piece around which the compression spring is disposed, a first end of this connecting piece being disposed in a household housing in the rocker arm so as to produce an articulation while the 'other end is arranged to slide and be free to rotate within the connecting rod means.
• the function of this connecting piece is in particular to maintain the longitudinal shape of the return spring.
• return means can be envisaged, for example using axial springs.
• a lock in a preferred embodiment of a lock according to the invention, it further comprises means for limiting the torque exerted on the connecting rod means by the operating arm.
• This type of situation can notably meet in the case of elevators or old elevators with a large variable clearance between the car and the amount of the cage receiving the lock.
• These torque limiting means are for example arranged within the head of the connecting rod means and are arranged to mechanically decouple the connecting rod means from the operating arm in the event of a torque limit being exceeded. They comprise for example at least one calibrated spring mounted in compression between a part extending radially with respect to the axis of the operating arm and a housing formed within the connecting rod head.
• FIG. 1 is an overall view of a landing door equipped with a lock according to the invention
• FIG. 2A is a partial top view of the lock in the locked position
• - Figure 2B is a partial top view of the lock in the unlocked position while a cabin is present opposite the leaf of the landing door;
• - Figure 2C is a partial top view of the lock in the locked position in the presence of a cabin;
• Figure 3 is an external front view of a lock according to the invention;
• - Figure 4 is an internal front view of the lock shown in Figure 3, opposite a landing door;
• FIG. 5 is an external side view of the lock shown in Figure 3 and 4;
• FIG. 6 shows an example of a torque limiter fitted to a lock according to the invention.
• An adjustable lock 1 is intended to be fixed in a housing 30 formed in the upright of a frame 3 of a landing door 2, with reference to FIG. 1.
• the lock 1 comprises a housing 16, a bolt adjustable 10 provided for engaging in a locking piece 20 integral with the leaf of the landing door 2 and provided with a fixed striker 201, and an operating arm 15 provided with a contact roller 154.
• the lock 1 is also connected by electrical connection means (not shown) to elevator control equipment.
• the lock 1 according to the invention is designed to allow easy adjustment of the lateral or attack position of the bolt as a function of the effective spacing X between the leaf 2 and the frame 3, after fixing the lock 1 within location 30, for example on the interior wall 31 of the upright of the frame 3 and against the interior side wall 31.
• a first situation corresponds to a locking of the door leaf landing 2 while the cabin is not opposite this door.
• the adjustable bolt 10 is completely engaged in the locking part 20 of the leaf of the landing door 2 thus ensuring the locking of this door, while the operating arm 15 is at rest.
• the electrical contact of lock 1 is then in a logic state "1" corresponding to an authorization to start and control the elevator.
• a cabin 4 has just arrived and comes to rest opposite the leaf of the landing door 2.
• a control member 42 causes the displacement of a movable shoe 40 integral cabin 4, which comes into contact with the roller 154 of the operating arm 15 and which, by exerting a thrust on this roller, causes a rotation movement of the axis of said arm 15.
• This rotation movement has the effect of move the bolt 10 towards the interior of the lock 1 and thus release the landing door 2, and open the electrical contactor with the consequence of inhibiting any movement of the elevator.
• the control member 42 causes the movable shoe 40 to be withdrawn and therefore a reverse rotation movement of the operating arm 15. This has the effect, on the one hand, of releasing the bolt 10 towards the outside of the lock until it is engaged in the locking part 20 of the leaf of the landing door 2, and on the other hand, to replace the electrical contactor of the lock 1 in a state "1" authorizing the motorization control of the elevator.
• the lock 1 comprises, within the housing 16, the adjustable bolt 10 movable inside a guide bearing 11 and extended at its inner end by a sliding piece 110 connected by articulation at the foot of a connecting rod 12.
• the bolt 10 is constituted by a sliding cylindrical piece 102 comprising over its entire length a central bore 106 intended to receive a movable core 200 capable of sliding in the bolt 10.
• the latter comprises at its external end a chamfer 101 provided to allow engagement of the striker 201 in the central bore 106 in order to come into abutment against the outer end of the core 200.
• the core 200 is designed to be moved inward relative to the cylindrical part 102 by the action on its outer end of the striker 201 secured to the locking piece 20, and outwards by the action on its inner end of a first finger 141 of a movable piece 14 acting rocker arm.
• the inner end of the core 200 is provided with a head 105 making a stop to restrict the relative outward movement of the core 200 inside the bolt 10.
• the rocker arm 14 is movable around an adjustable axis 143 linked to a sector-shaped adjustment part 7 which can itself be rotated about a fixed axis 70 linked to the housing 16.
• a system of screws (not shown) makes it possible to block the sector 7 in an adjustment position determined by depending on the actual context of the installation, as will be described below.
• the rocker arm 14 includes a second finger 142 intended to bear against a heel 121 located on the body 127 of a connecting rod 12 comprising a connecting rod head connected to the inner end of the sliding part 110 and a connecting rod head 122 movable in rotation about a main axis and connected via an axial part to the operating arm 15.
• the operating arm 15 comprises, with reference to FIGS. 4 and 5, an arm 157 comprising at one of its ends a mechanism for fixing 156 to the main axis 123 and at the other end a movable pad 154 connected by a shoe axis 153.
• the connecting rod head 122 comprises a housing 126 designed to receive one end 133 of a compression spring mechanism 130 disposed between the connecting rod head 122 and a housing formed in the rocker arm 14 to receive the other end 134 of this spring mechanism 130 which comprises, for example, a helical spring 132 arranged around a guide bar 131.
• a contact piece 17, fixed to the sliding piece 110, is provided with a finger provided for mechanically actuating an electrical safety switch 19.
• the spring 132 in fact combines several functions which are generally dissociated in the locks of the prior art.
• a first function consists in exerting via the connecting rod 12 a permanent thrust on the sliding part 110 extending the bolt 10, in order to maintain the latter in the extended position. This permanent thrust is of course counteracted by the blocking produced by the rocker arm 14 against the heel 121.
• a second function of the spring 132 consists in holding the first finger 141 of the rocker arm 14 in abutment against the head 105 of the core 200.
• the control member 42 is then actuated to order a withdrawal of the shoe 40 which then exerts no more force on the roller 154. Due to the permanent compression of the spring 132, the connecting rod 12 is subjected to a rotational movement around the main axis so that the sliding part 110 and the bolt 10 move laterally towards the outside of the lock 1. L action of the finger 201 on the core 200 causes the rocker 14 to tilt and release the bolt 10 which returns to its extremal exit position.
• the adjustment of the extreme attack position consists in acting on the angular position of the sector 7 and therefore in adjusting the absolute position of the axis of rotation of the rocker arm 14.
• the tightening of the sector 7 can be achieved by means of a screw or a nut accessible on the front face of the housing 16 of the lock 1.
• the connecting rod head 122 comprises a main bore 63 provided for receiving the main axis 123 connected to the operating arm 15, a first substantially radial housing 65 provided for receiving a part 124 acting of torque transmission part, a second substantially tangential housing 61 provided to receive a limiting spring 60 used in compression, and a recess 66 provided to allow movement relative to the transmission part 124 with respect to the connecting rod head 122.
• the main axis 123 has a hole 64 intended to receive the transmission part 124 which bears against one end of the limiting spring 60 and the other end of which bears against the bottom of the tangential housing 61.
• the resulting torque exerted on the big end corresponding to the difference between the torque exerted on the main axis by action on the operating arm 15 and the resistive torque at the big end 122 is less than a limit value predetermined, the movement of the main axis is fully transmitted to the connecting rod body 122. Beyond this predetermined limit value, the torque differential is absorbed by the compression of the limiting spring 60 and is not reflected on the head of connecting rod 122.

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• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Lock And Its Accessories (AREA)
• Elevator Door Apparatuses (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9512206

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (6)

• 1997
  • 1997-10-14 FR FR9712835A patent/FR2769609B3/fr not_active Expired - Fee Related
• 1998
  • 1998-10-14 WO PCT/FR1998/002202 patent/WO1999019587A1/fr active IP Right Grant
  • 1998-10-14 DE DE69800840T patent/DE69800840T2/de not_active Expired - Lifetime
  • 1998-10-14 BR BR9814071-0A patent/BR9814071A/pt active Search and Examination
  • 1998-10-14 EP EP98949058A patent/EP1023513B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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