EP1841682B1 - Elevator car door locking apparatus - Google Patents
Elevator car door locking apparatus Download PDFInfo
- Publication number
- EP1841682B1 EP1841682B1 EP05704398.6A EP05704398A EP1841682B1 EP 1841682 B1 EP1841682 B1 EP 1841682B1 EP 05704398 A EP05704398 A EP 05704398A EP 1841682 B1 EP1841682 B1 EP 1841682B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- slider
- latch
- cam
- locking apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003068 static effect Effects 0.000 claims description 32
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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 an apparatus to mechanically lock the door of an elevator car outside the landing zone, the unlocking zone, independent of the hoistway door motion.
- Automatic elevator doors are opened by the door drive usually located on the elevator car. In case the car stops between floors, e.g. due to a power failure, passengers force the car doors manually to open.
- a car door locking apparatus is applied in order to prevent the car doors from being manually opened.
- An elevator car door locking apparatus according to the preamble of claim 1 is already known e.g. from JP-A-10045360 .
- a solution for this problem is to secure a clearance between the roller and the ramp during car travel by adding a manual handle to manually provide this clearance between the ramp and the roller as described in Patent US 3659677 , Patent GB 1047977 or Patent GB 1265989 .
- the disadvantage of this solution is that the doors are no longer automatically operated, but manual operation is required to unlock a door locking mechanism even at a landing.
- the conventional door locking apparatus disclosed in Patent EP 0709334 has the lock 31, the ramp 30 at each floor in the hoistway, and the link device 32 for actuating the lock 31.
- the lock 31 and the link device 32 are mounted to the overhead support beam 36.
- the link device 32 has the actuation lever 33. With the car positioned at a floor, the actuation lever 33 infringes with the ramp 30 through the roller 34.
- the actuation lever 33 is rotatably mounted to the link device 32 through the movable pivot 35.
- the door coupling portion 38 is mounted to the hanger plate 37, with the coupling element 40 coupled to the vane 39 of the door coupling portion 38.
- the motion of the hanger plate 37 is transferred to the link device 32 via the vane 39 and the coupling element 40 before the door reaches its closed position, actuating the lock 31 by the drive force of the door actuating mechanism.
- An object of this invention is to provide a mechanical car door locking apparatus, automatically operated by the door drive but independent of the door drive coupling mechanism.
- This invention relates to an elevator car door locking apparatus for locking a sliding door of a car of an elevator when the car is outside a landing zone, including: a ramp mounted in a hoistway at each landing position; and a locking mechanism portion mounted on the car.
- the locking mechanism portion includes: a static latch which moves along with the door; a first cam which moves along with the door; and a lever mechanism mounted to the car.
- the lever mechanism includes: a slider rod whose one end is mounted to the car so as to be pivotable around a first hinge point, the slider rod being adapted to assume a locked position where the slider rod extends horizontally in a door opening direction and an unlocked position where the slider rod has been pivoted upward from the locked position by a predetermined angle; a latch arranged integrally with the slider rod such that the latch can engage with the static latch when the slider rod is in the locked position and that the latch does not engage with the static latch when the slider rod is in the unlocked position; a slider arranged so as to move along the slider rod; a first roller arranged below a position between the first hinge point and the slider and adapted to be rotatable around a second hinge point; a first lever mounted such that its one end is pivotable around the first hinge point and its other end is pivotable around the second hinge point, the first lever being suspended between the first and second hinge points; a second lever mounted such that its one end is pivotable around the second hinge point and its other end is mounted to the slider so
- the slider moves in conjunction with motion of the first cam along the slider rod in a door opening direction to cause the second roller to infringe with the ramp, and subsequent motion of the first cam causes the slider rod to pivot from the locked position to the unlocked position with a result that the static latch passes the latch without engaging with the latch, enabling opening operation of the door.
- the locking apparatus according to this invention is totally independent of the drive mechanism of the hoistway doors, whereby any type of hoistway door coupling mechanism can be applied. Furthermore, a mechanical lever mechanism with no electrically operated actuator is adopted, whereby no electrical power is required to effect locking operation.
- Figure 1 shows the basic concept of the locking apparatus of this invention.
- the locking apparatus can be divided into three groups of parts: the parts mounted to the door hanger 10; the parts mounted to the car support frame (not shown); and the parts mounted static in the hoistway (not shown).
- the parts mounted to the door hanger 10 are a static latch 16 and a first cam 9.
- a ramp 1 is mounted at each landing static in the hoistway. The ramp 1 is positioned next to the door entrance. Further, by positioning the ramp 1 behind the jamb of the door frame, appearance is not negatively influenced even in case of glass doors or a glass hoistway.
- a lever mechanism 25 is mounted to the car support frame, and has a first hinge point 15 static on the car support frame.
- This lever mechanism 25 is basically composed of three levers. Two levers, a first lever 11 and a slider rod 3, are hinge-connected to the first hinge point 15.
- a first roller 7 is mounted to the opposite end of the first lever 11 on the first hinge 15 side at a second hinge point 8.
- a slider 4 is moved along a slider rod 3.
- the second roller 5 is mounted to the slider 4 at a third hinge point 17.
- One end of the remaining second lever 6 is hinge-connected to the second hinge point 8, and the opposite side is hinge-connected to the third hinge point 17.
- a latch 2 is mounted to the slider rod 3.
- Figs. 2 and 3 show a state in which the car is at a landing with the door closed.
- the door hanger 10 is mounted to a door rail disposed on an upper outer wall of the car entrance so as to free to move in the door opening and closing direction. Further, a bracket 19 is mounted to the door hanger 10, and a cam bracket 18 is mounted to the door hanger 10 so as to be positioned below the bracket 19.
- the static latch 16 is mounted on top of the bracket 19. Further, although not shown, shims are applied in between the static latch 16 and the bracket 19, making it possible to easily adjust the height of the static latch 16 for proper locking distance.
- the first cam 9 has a pair of inclined parts 9a and 9c, and a flat part 9b connecting between the pair of inclined parts 9a and 9c.
- the first cam 9 is mounted on top of the cam bracket 18, with the inclined part 9a facing the direction of door opening and the flat part 9b being horizontal. Further, shims 24 are applied between the first cam 9 and the cam bracket 18, enabling easy adjustment of the height of the first cam 9. Further, slots 18a are provided in the cam bracket 18 for easy adjustment of the horizontal position of the first cam 9.
- a hinge block 12 is hinge-connected at the first hinge point 15.
- the slider rod 3 and the latch 2 are mounted to the hinge block 12.
- the slider 4 rests in default position where the slider 4 contacts the hinge block 12.
- the latch 2 and the slider rod 3 are at a horizontal position, and a clearance (standard set gap) is present between the ramp 1 and the second roller 5 mounted to the slider 4.
- a first cam 9 is mounted such that the first roller 7 just contacts the inclined part 9a of the first cam 9.
- a switch contact 14 is mounted to the latch 2 and contacts a switch 13 if the latch is in horizontal position as shown.
- the shown switch contact 14 and the switch 13 are just an example. Other types of safety switches can be applied in a similar way.
- a ramp bracket 27 is fastened onto a landing door frame (not shown) with bolts passed through slots 27a.
- the ramp 1 is fastened onto the ramp bracket 27 with bolts passed through slots 27b.
- the shape of the ramp bracket 27 depends of course on the landing door frame shape and is not limited to the design shown in Figs. 4 through 6 .
- the position of the ramp 1 can be adjusted in two directions corresponding to the longitudinal directions of the elongated slots 27a, 27b formed in the ramp bracket 27, that is, in the direction parallel to the door motion for adjusting the gap between the first roller 7 and the ramp 1 and in the direction perpendicular to the door motion for adjusting the clearance between static parts in the hoistway and the parts moving along with the car during car travel.
- the vertical position of the ramp 1 can be adjusted if necessary by providing shims between the ramp bracket 27 and the landing door frame.
- Figs. 7 though 9 show the locking apparatus when the door is partly opened inside the unlocking zone until the second roller 5 touches the ramp 1.
- the door is opened over a distance equal to the default gap between the second roller 5 and the ramp 1 in the case of a closed door.
- the first cam 9 moves together with the door in the rightward direction as seen in Figs. 7 and 8 and pushes against the first roller 7. Consequently the hinge-connected first lever 11 has to rotate counterclockwise as seen in Figs. 7 and 8 .
- This rotation of the first lever 11 moves the second hinge point 8.
- the second lever 6 shares the same second hinge point 8. Due to the fixed length of the second lever 6, the other hinge point of the second lever 6, the third hinge point 17, has to move as well.
- the slider 4 sharing the same third hinge point 17 is pressed on by the second lever 6 with a force F R .
- the vertical component of the force F R a force F RV , creates a counterclockwise torque around the first hinge point 15 which is equal to F RV multiplied by the distance between the third hinge point 17 and the first hinge point 15.
- a gravity force F COM of the whole lever mechanism 25 creates a clockwise torque around the first hinge point 15 which is equal to F COM multiplied by the horizontal distance between the center of mass (COM) of the lever mechanism 25 and the first hinge point 15.
- the mass and COM of the lever mechanism 25 are arranged such that the clockwise torque is greater than the counterclockwise torque.
- Figs. 10 and 11 show the locking apparatus when the car door is partly opened inside the unlocking zone with the latch unlocked position.
- the second roller 5 comes into contact with the ramp 1, preventing further horizontal motion of the third hinge point 17. If the inclined part 9a of the first cam 9 continues to push against the first roller 7 during continued door opening motion, the first lever 11 continues to rotate until the first roller 7 rides onto the flat part 9b on the top of the first cam 9 from the inclined part 9a. Due to the construction of the lever mechanism 25, the third hinge point 17 has no other option than to move upward.
- the slider 4, sharing the same third hinge point 17, is forced to move upward as well.
- the slider rod 3 is hinge-connected to the hinge point 15 static positioned on the car support frame. Accordingly, upward motion of the slider 4 results in counterclockwise rotation of the slider rod 3 around the first hinge point 15.
- the latch 2 linked to the slider rod 3 will rotate counterclockwise as well. As a result, the latch 2 and the slider rod 3 rotate upward by a predetermined angle from the locked position to the unlocked position so that the static latch 16 can pass the latch 2.
- the first roller 7 remains on the flat portion 9b of the first cam 9 until the static latch 16 and the bracket 19 have passed the latch 2 sufficiently to prevent infringements between those parts. That is, the latch 2 and the slider rod 3 are held in the unlocked position. Then, as the first roller 7 moves to the inclined part 9c via the flat part 9b, the latch 2 and the slider rod 3 are returned to the locked position from the unlocked position.
- Figs. 12 through 15 shows a state when the door is partly opened outside the unlocking zone. In this state, for example, passengers open the door manually in between floors.
- the ramp 1 does not exist, so the third hinge point 17 does not move upward during the continued door opening motion.
- the slider 4 will continue to move due to the horizontal component of the force F R , a force F RH , along the slider rod 3 until the static latch 16 hooks behind the latch 2. That is, the latch 2 and the slider rod 3 are held in their locked positions. Because the static latch 16 is mounted to the door hanger 10, the door hanger 10 can not continue to open further once the static latch 16 thus hooks behind the latch 2.
- the bracket 22 has a horizontal flange 22a and a vertical flange 22b and is mounted on top of the slider 4.
- a bracket 21 has a first flange 21a and a second flange 21b that are horizontally bent at two different levels, and is mounted to a lever assembly support plate 26.
- the first flange 21a nearest to the lever assembly support plate 26 is at the same horizontal level as the horizontal flange 22a.
- the vertical flange 22b is positioned between the first flange 21a and the second flange 21b.
- the first roller 7 When the door is opened with the slider 4 positioned in the default position, the first roller 7 is pushed upward along the inclined part 9a of the first cam 9. This first roller 7 motion creates a force for rotating the latch 2 counterclockwise around the first hinge point 15 as seen in Fig. 16 .
- the horizontal flange 22a of the bracket 22 Infringes almost directly with the first flange 21a.
- the reaction force created by the horizontal flange 22a infringing with the first flange 21a acts on the bracket 22, moving the slider 4 along the slider rod 3 in the rightward direction as seen in Fig. 16 .
- the above-mentioned reaction force acts to release the slider 4 from the slider rod 3 so that the slider 4 is able to move without rotating the latch 2.
- the first flange 21a and the horizontal flange 22a constitute slider motion generating means.
- the slider 4 moves along the slider rod 3 to the default latch position shown in Figs. 18 and 19 .
- this default latch position the vertical flange 22b is positioned directly below the second flange 21b, and there is a small vertical gap between the flanges 21b and 22b.
- this default latch position corresponds to the last part of the slider 4 motion path until the static latch 16 infringes with the latch 2 from its fully closed position.
- the second flange 21b and the vertical flange 22b constitute pivot stopping means.
- Embodiment 2 is of the same construction as Embodiment 1 described above.
- the second roller 5 In normal door opening operation inside the unlocking zone, the second roller 5 infringes with the ramp 1 before the vertical flange 22b reaches the second flange 21b.
- the latch 2 can thus rotate to unlock.
- the first cam 9 is mounted on top of the cam bracket 18. Further, a second cam 20 is mounted on top of the first cam 9. Shims 24 are applied in between the first cam 9 and the cam bracket 18 to adjust the vertical positions of the first and second cams 9 and 20 simultaneously. The combination of the first and second cams 9 and 20 is such that the lever mechanism 25 does not get clamped between the first and second cams 9 and 20 during door motion.
- Embodiment 3 is of the same construction as Embodiment 2 described above.
- the first roller 7 rides onto the flat part 9b of the first cam 9 from the inclined part 9c thereof, pivoting the slider rod 3 from the locked position to the unlocked position. The first roller 7 then moves along the flat part 9b so the slider rod 3 is held in the unlocked position.
- the latch 2 and the slider rod 3 rotate clockwise around the first hinge point 15 by their own weights.
- the first roller 7 thus moves downward along the inclined part 9a, causing the slider 4 to move along the slider rod 3 towards the hinge block 12. Then the slider 4 returns to the default position where it is positioned near the hinge block 12 and the latch 2 and the slider rod 3 are at their horizontal positions (unlocked positions).
- the slider 4 can be reliably returned to its default position in the state where the door is closed.
- the length of the flat part 9b of a first cam 9A is such that the flat part 9b contacts the first roller 7 during the whole door motion path from a time the static latch 16 passes the latch 2 until the door is fully opened.
- Embodiment 4 is of the same construction as Embodiment 1 described above.
- the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines.
- the first roller 7 is in contact with the flat part 9b of the first cam 9A during the whole door motion path until the door is really closed from its fully opened state, thereby maintaining the state (unlocked position) with the slider rod 3 having been rotated counterclockwise around the first hinge point 15 by a predetermined angle.
- the switch 13 is opened at this time, making it possible to achieve extended lifetime of the switch 13.
- the contact between the first roller 7 and the first cam 9A is kept by the gravity force or by the gravity force plus the spring force. Therefore, the contact between the first roller 7 and the first cam 9A can be maintained by means of an inexpensive structure.
- the flat part 9b of the first cam 9A and the flat part 20b of a second cam 20A have such lengths that they contact the first roller 7 during the whole door motion path from a time the static latch 16 passes the latch 2 until the door is fully opened.
- Embodiment 5 is of the same construction as Embodiment 3 described above.
- the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines.
- the first roller 7 is positioned between the flat part 9b of the first cam 9A and the flat part 20b of the second cam 20A during the whole door motion path until the door is really closed from its fully opened state, thereby maintaining the state (unlocked position) with the slider rod 3 having been rotated counterclockwise around the first hinge point 15 by a predetermined angle.
- the switch 13 is opened at this time, making it possible to achieve extended lifetime of the switch 13.
- first roller 7 is positioned between the flat parts 9b and 20b due to the shape relation of the first and second cams 9A and 20A, whereby the unlocked position of the slider rod 3 can be reliably maintained even during shock motion of the car. Thus closure of the switch 13 during shock motion of the car can be prevented as well.
- first and second cams 9A and 20A is not limited to the one shown in Fig. 26 but may be any other shape relation.
- the shape of the first cam 9 is such that the first cam 9 does not contact the first roller 7 during the end of the door closing path.
- Embodiment 6 is of the same construction as Embodiment 1 described above.
- the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines.
- the shape of the first cam 9 is such that the first cam 9 does not contact the first roller 7 during the end of the door closing path, that is, when the slider 4 is in its default position. Adjustment of the horizontal position of the first cam 9 is thus not required, and the installation of the first cam 9 is simplified.
- a relatively simple lever mechanism is applied without any electrically operated actuators, so the locking operation is independent of the presence of electrical power.
- Installation on the job-site is very simple. Most installation jobs can be performed in the factory where the work environment is much better than at the job-site.
- the parts mounted to the car support frame and the parts mounted to the door hanger 10 can all be installed in the factory.
- the ramp bracket 27 can be installed to the landing door frame in the factory as well.
- the ramp 1 can easily be installed at the job-site.
- any type of hoistway door coupling mechanism can be applied, because this car door locking apparatus is totally independent of the drive mechanism of the hoistway doors. This is an advantage because in many cases the hoistway door coupling mechanism is part of a certified hoistway door locking apparatus. Modifications to the hoistway door locking apparatus may require new certification.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
Description
- The present invention relates to an apparatus to mechanically lock the door of an elevator car outside the landing zone, the unlocking zone, independent of the hoistway door motion. Automatic elevator doors are opened by the door drive usually located on the elevator car. In case the car stops between floors, e.g. due to a power failure, passengers force the car doors manually to open. A car door locking apparatus is applied in order to prevent the car doors from being manually opened.
- An elevator car door locking apparatus according to the preamble of
claim 1 is already known e.g. fromJP-A-10045360 - Conventional mechanical car door locking apparatuses are operated by contact between a roller on the car and ramps mounted in the elevator hoistway at each floor. This had the disadvantage that the roller contacted the ramp of each floor during car travel, causing part wear and noise.
- A solution for this problem is to secure a clearance between the roller and the ramp during car travel by adding a manual handle to manually provide this clearance between the ramp and the roller as described in Patent
US 3659677 , PatentGB 1047977 GB 1265989 - Another solution was found in including some electrical actuator to keep clearance between the roller and the ramp during car travel as described in Patent
DE 598407 , PatentGB 2206331 EP 0426057 . The disadvantage of electrical actuators is that power is required for locking operation. - In view of this, to keep the clearance between the roller and the ramp during car travel, it has been proposed to use the motion of a coupling drive mechanism between the car doors and hoistway doors as described in Patent
EP 0709334 . - As shown in
Fig. 28 , the conventional door locking apparatus disclosed in PatentEP 0709334 has thelock 31, theramp 30 at each floor in the hoistway, and thelink device 32 for actuating thelock 31. Thelock 31 and thelink device 32 are mounted to theoverhead support beam 36. Thelink device 32 has theactuation lever 33. With the car positioned at a floor, theactuation lever 33 infringes with theramp 30 through theroller 34. Theactuation lever 33 is rotatably mounted to thelink device 32 through themovable pivot 35. Thedoor coupling portion 38 is mounted to thehanger plate 37, with thecoupling element 40 coupled to thevane 39 of thedoor coupling portion 38. - The motion of the
hanger plate 37 is transferred to thelink device 32 via thevane 39 and thecoupling element 40 before the door reaches its closed position, actuating thelock 31 by the drive force of the door actuating mechanism. - In the conventional car door locking apparatus according to Patent
EP 0709334 , the actuation of thelock 31 is dependent on the door drive. This involves a disadvantage that modification of the existing door drive coupling mechanism is necessary to add the additional function of the car door locking. - An object of this invention is to provide a mechanical car door locking apparatus, automatically operated by the door drive but independent of the door drive coupling mechanism.
- This invention relates to an elevator car door locking apparatus for locking a sliding door of a car of an elevator when the car is outside a landing zone, including: a ramp mounted in a hoistway at each landing position; and a locking mechanism portion mounted on the car. The locking mechanism portion includes: a static latch which moves along with the door; a first cam which moves along with the door; and a lever mechanism mounted to the car. The lever mechanism includes: a slider rod whose one end is mounted to the car so as to be pivotable around a first hinge point, the slider rod being adapted to assume a locked position where the slider rod extends horizontally in a door opening direction and an unlocked position where the slider rod has been pivoted upward from the locked position by a predetermined angle; a latch arranged integrally with the slider rod such that the latch can engage with the static latch when the slider rod is in the locked position and that the latch does not engage with the static latch when the slider rod is in the unlocked position; a slider arranged so as to move along the slider rod; a first roller arranged below a position between the first hinge point and the slider and adapted to be rotatable around a second hinge point; a first lever mounted such that its one end is pivotable around the first hinge point and its other end is pivotable around the second hinge point, the first lever being suspended between the first and second hinge points; a second lever mounted such that its one end is pivotable around the second hinge point and its other end is mounted to the slider so as to be pivotable around a third hinge point, the second lever being suspended between the second and third hinge points; and a second roller mounted to the slider so as to be rotatable around the third hinge point. When, with the car positioned outside the landing zone, motion of the first cam moving along with opening motion of the door is transferred to the first roller, the slider moves in conjunction with motion of the first cam along the slider rod in a door opening direction to keep the slider rod in the locked position, and the static latch moving along with the opening motion of the door engages with the latch, disabling opening operation of the door. Further, when, with the car positioned inside the landing zone, motion of the first cam moving along with opening motion of the door is transferred to the first roller, the slider moves in conjunction with motion of the first cam along the slider rod in a door opening direction to cause the second roller to infringe with the ramp, and subsequent motion of the first cam causes the slider rod to pivot from the locked position to the unlocked position with a result that the static latch passes the latch without engaging with the latch, enabling opening operation of the door.
- The locking apparatus according to this invention is totally independent of the drive mechanism of the hoistway doors, whereby any type of hoistway door coupling mechanism can be applied. Furthermore, a mechanical lever mechanism with no electrically operated actuator is adopted, whereby no electrical power is required to effect locking operation.
-
-
Fig. 1 is a schematic view schematically showing an elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where a car is at a landing with a closed door. -
Fig. 2 is a front view showing the elevator car door locking apparatus according to Embodiment 1 of this invention in the state where the car is at a landing with a closed door. -
Fig. 3 is a side view showing the elevator car door locking apparatus according to Embodiment 1 of this invention in the state where the car is at a landing with a closed door. -
Fig. 4 is a perspective view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention to explain how a ramp is mounted. -
Fig. 5 is a side view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention to explain how the ramp is mounted. -
Fig. 6 is a front view for explaining how the ramp is mounted in the elevator car door locking apparatus according toEmbodiment 1 of this invention. -
Fig. 7 is a schematic view schematically showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where a car door is partly opened inside an unlocking zone until a roller touches the ramp. -
Fig. 8 is a front view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the elevator door is partly opened inside the unlocking zone until the roller touches the ramp. -
Fig. 9 is a side view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened inside the unlocking zone until the roller touches the ramp. -
Fig. 10 is a schematic view schematically showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened inside the unlocking zone with unlocked latch. -
Fig. 11 is a front view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened inside the unlocking zone with unlocked latch. -
Fig. 12 is a schematic view schematically showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened outside the unlocking zone. -
Fig. 13 is a front view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened outside the unlocking zone. -
Fig. 14 is an enlarged view of a portion A ofFig. 13 . -
Fig. 15 is a side view showing the elevator car door locking apparatus according toEmbodiment 1 of this invention in the state where the car door is partly opened outside the unlocking zone. -
Fig. 16 is a front view showing an elevator car door locking apparatus according toEmbodiment 2 of this invention in a default position. -
Fig. 17 is a side view showing the elevator car door locking apparatus according toEmbodiment 2 of this invention in the default position. -
Fig. 18 is a front view showing the elevator car door locking apparatus according toEmbodiment 2 of this invention in a state where the car door is partly opened outside the unlocking zone. -
Fig. 19 is a side view showing the elevator car door locking apparatus according toEmbodiment 2 of this invention in the state where the car door is partly opened outside the unlocking zone. -
Fig. 20 is a front view showing an elevator car door locking apparatus according toEmbodiment 3 of this invention during door closing motion. -
Fig. 21 is an enlarged view of a portion B ofFig. 20 . -
Fig. 22 is a side view showing the elevator car door locking apparatus according toEmbodiment 3 of this invention during door closing motion. -
Fig. 23 is a front view showing the elevator car door locking apparatus according toEmbodiment 3 of this invention to explain a cam mounting structure. -
Fig. 24 is a side view showing the elevator car door locking apparatus according toEmbodiment 3 of this invention to explain the cam mounting structure. -
Fig. 25 is a schematic view schematically showing an elevator car door locking apparatus according toEmbodiment 4 of this invention. -
Fig. 26 is a schematic view schematically showing an elevator car door locking apparatus according toEmbodiment 5 of this invention. -
Fig. 27 is a schematic view schematically showing an elevator car door locking apparatus according toEmbodiment 6 of this invention. -
Fig. 28 is a structural view schematically showing a conventional elevator car door locking apparatus. - The basic concept and operation of this invention will hereinafter be explained by the aid of an application embodiment by referring to the drawings.
-
Figure 1 shows the basic concept of the locking apparatus of this invention. The locking apparatus can be divided into three groups of parts: the parts mounted to thedoor hanger 10; the parts mounted to the car support frame (not shown); and the parts mounted static in the hoistway (not shown). The parts mounted to thedoor hanger 10 are astatic latch 16 and afirst cam 9. Aramp 1 is mounted at each landing static in the hoistway. Theramp 1 is positioned next to the door entrance. Further, by positioning theramp 1 behind the jamb of the door frame, appearance is not negatively influenced even in case of glass doors or a glass hoistway. - A
lever mechanism 25 is mounted to the car support frame, and has afirst hinge point 15 static on the car support frame. Thislever mechanism 25 is basically composed of three levers. Two levers, afirst lever 11 and aslider rod 3, are hinge-connected to thefirst hinge point 15. Afirst roller 7 is mounted to the opposite end of thefirst lever 11 on thefirst hinge 15 side at asecond hinge point 8. Aslider 4 is moved along aslider rod 3. Thesecond roller 5 is mounted to theslider 4 at athird hinge point 17. One end of the remainingsecond lever 6 is hinge-connected to thesecond hinge point 8, and the opposite side is hinge-connected to thethird hinge point 17. Alatch 2 is mounted to theslider rod 3. - Here, the specific construction of the locking apparatus is described based on
Figs. 2 through 6 .Figs. 2 and 3 show a state in which the car is at a landing with the door closed. - Though not shown, the
door hanger 10 is mounted to a door rail disposed on an upper outer wall of the car entrance so as to free to move in the door opening and closing direction. Further, abracket 19 is mounted to thedoor hanger 10, and acam bracket 18 is mounted to thedoor hanger 10 so as to be positioned below thebracket 19. - The
static latch 16 is mounted on top of thebracket 19. Further, although not shown, shims are applied in between thestatic latch 16 and thebracket 19, making it possible to easily adjust the height of thestatic latch 16 for proper locking distance. Thefirst cam 9 has a pair ofinclined parts flat part 9b connecting between the pair ofinclined parts first cam 9 is mounted on top of thecam bracket 18, with theinclined part 9a facing the direction of door opening and theflat part 9b being horizontal. Further, shims 24 are applied between thefirst cam 9 and thecam bracket 18, enabling easy adjustment of the height of thefirst cam 9. Further,slots 18a are provided in thecam bracket 18 for easy adjustment of the horizontal position of thefirst cam 9. - A
hinge block 12 is hinge-connected at thefirst hinge point 15. Theslider rod 3 and thelatch 2 are mounted to thehinge block 12. Theslider 4 rests in default position where theslider 4 contacts thehinge block 12. In this default position thelatch 2 and theslider rod 3 are at a horizontal position, and a clearance (standard set gap) is present between theramp 1 and thesecond roller 5 mounted to theslider 4. In this way, no contact noise ofsecond roller 5 and theramp 1 will occur during car travel when theslider 4 is at the default position. When theslider 4 is at the default position, afirst cam 9 is mounted such that thefirst roller 7 just contacts theinclined part 9a of thefirst cam 9. Aswitch contact 14 is mounted to thelatch 2 and contacts aswitch 13 if the latch is in horizontal position as shown. The shownswitch contact 14 and theswitch 13 are just an example. Other types of safety switches can be applied in a similar way. - A
ramp bracket 27 is fastened onto a landing door frame (not shown) with bolts passed throughslots 27a. Theramp 1 is fastened onto theramp bracket 27 with bolts passed throughslots 27b. The shape of theramp bracket 27 depends of course on the landing door frame shape and is not limited to the design shown inFigs. 4 through 6 . Further, the position of theramp 1 can be adjusted in two directions corresponding to the longitudinal directions of theelongated slots ramp bracket 27, that is, in the direction parallel to the door motion for adjusting the gap between thefirst roller 7 and theramp 1 and in the direction perpendicular to the door motion for adjusting the clearance between static parts in the hoistway and the parts moving along with the car during car travel. Further, the vertical position of theramp 1 can be adjusted if necessary by providing shims between theramp bracket 27 and the landing door frame. - First, the operation of the locking apparatus of this invention inside the unlocking zone (inside the landing zone) is described.
-
Figs. 7 though 9 show the locking apparatus when the door is partly opened inside the unlocking zone until thesecond roller 5 touches theramp 1. In this case, the door is opened over a distance equal to the default gap between thesecond roller 5 and theramp 1 in the case of a closed door. Thefirst cam 9 moves together with the door in the rightward direction as seen inFigs. 7 and8 and pushes against thefirst roller 7. Consequently the hinge-connectedfirst lever 11 has to rotate counterclockwise as seen inFigs. 7 and8 . This rotation of thefirst lever 11 moves thesecond hinge point 8. Thesecond lever 6 shares the samesecond hinge point 8. Due to the fixed length of thesecond lever 6, the other hinge point of thesecond lever 6, thethird hinge point 17, has to move as well. Theslider 4 sharing the samethird hinge point 17 is pressed on by thesecond lever 6 with a force FR. The vertical component of the force FR, a force FRV, creates a counterclockwise torque around thefirst hinge point 15 which is equal to FRV multiplied by the distance between thethird hinge point 17 and thefirst hinge point 15. A gravity force FCOM of thewhole lever mechanism 25 creates a clockwise torque around thefirst hinge point 15 which is equal to FCOM multiplied by the horizontal distance between the center of mass (COM) of thelever mechanism 25 and thefirst hinge point 15. The mass and COM of thelever mechanism 25 are arranged such that the clockwise torque is greater than the counterclockwise torque. Thus, instead of thelatch 2 rotation, theslider 4 with the attachedsecond roller 5 will move along theslider rod 3 towards theramp 1 until thesecond roller 5 contacts theramp 1. That is, thelatch 2 and theslider rod 3 are held in their locked positions until thesecond roller 5 contacts theramp 1. - Here, as shown in
Fig. 8 , theslider 4 is moved away from thehinge block 12. Further, no clearance remains between thesecond roller 5 and theramp 1. -
Figs. 10 and11 show the locking apparatus when the car door is partly opened inside the unlocking zone with the latch unlocked position. - The
second roller 5 comes into contact with theramp 1, preventing further horizontal motion of thethird hinge point 17. If theinclined part 9a of thefirst cam 9 continues to push against thefirst roller 7 during continued door opening motion, thefirst lever 11 continues to rotate until thefirst roller 7 rides onto theflat part 9b on the top of thefirst cam 9 from theinclined part 9a. Due to the construction of thelever mechanism 25, thethird hinge point 17 has no other option than to move upward. Theslider 4, sharing the samethird hinge point 17, is forced to move upward as well. Theslider rod 3 is hinge-connected to thehinge point 15 static positioned on the car support frame. Accordingly, upward motion of theslider 4 results in counterclockwise rotation of theslider rod 3 around thefirst hinge point 15. Thelatch 2 linked to theslider rod 3 will rotate counterclockwise as well. As a result, thelatch 2 and theslider rod 3 rotate upward by a predetermined angle from the locked position to the unlocked position so that thestatic latch 16 can pass thelatch 2. - At this time, as shown in
Fig. 11 , theswitch contact 14 no longer contacts theswitch 13. - The
first roller 7 remains on theflat portion 9b of thefirst cam 9 until thestatic latch 16 and thebracket 19 have passed thelatch 2 sufficiently to prevent infringements between those parts. That is, thelatch 2 and theslider rod 3 are held in the unlocked position. Then, as thefirst roller 7 moves to theinclined part 9c via theflat part 9b, thelatch 2 and theslider rod 3 are returned to the locked position from the unlocked position. - Next, operation of the locking apparatus of this invention outside the unlocking zone (outside the landing zone) is described.
-
Figs. 12 through 15 shows a state when the door is partly opened outside the unlocking zone. In this state, for example, passengers open the door manually in between floors. - As shown in
Figs. 10 and11 , with the car door positioned inside the unlocking zone, thesecond roller 5 contacts theramp 1 during continued door opening motion, causing thethird hinge point 17 to move upward. - However, when, as shown in
Figs. 12 through 15 , the car door is outside the unlocking zone, theramp 1 does not exist, so thethird hinge point 17 does not move upward during the continued door opening motion. In that case theslider 4 will continue to move due to the horizontal component of the force FR, a force FRH, along theslider rod 3 until thestatic latch 16 hooks behind thelatch 2. That is, thelatch 2 and theslider rod 3 are held in their locked positions. Because thestatic latch 16 is mounted to thedoor hanger 10, thedoor hanger 10 can not continue to open further once thestatic latch 16 thus hooks behind thelatch 2. - Referring to
Figs. 16 through 19 , thebracket 22 has ahorizontal flange 22a and avertical flange 22b and is mounted on top of theslider 4. Abracket 21 has afirst flange 21a and asecond flange 21b that are horizontally bent at two different levels, and is mounted to a leverassembly support plate 26. Thefirst flange 21a nearest to the leverassembly support plate 26 is at the same horizontal level as thehorizontal flange 22a. Further, as shown inFig. 16 , in the default position with theslider 4 positioned nearest to thehinge block 12, only a negligible horizontal gap is present between thefirst flange 21a and thehorizontal flange 22a. Further, thevertical flange 22b is positioned between thefirst flange 21a and thesecond flange 21b. - When the door is opened with the
slider 4 positioned in the default position, thefirst roller 7 is pushed upward along theinclined part 9a of thefirst cam 9. Thisfirst roller 7 motion creates a force for rotating thelatch 2 counterclockwise around thefirst hinge point 15 as seen inFig. 16 . When thelatch 2 starts to rotate due to this force, thehorizontal flange 22a of thebracket 22 infringes almost directly with thefirst flange 21a. The reaction force created by thehorizontal flange 22a infringing with thefirst flange 21a acts on thebracket 22, moving theslider 4 along theslider rod 3 in the rightward direction as seen inFig. 16 . In case theslider 4 sticks to theslider rod 3 due to some cause, the above-mentioned reaction force acts to release theslider 4 from theslider rod 3 so that theslider 4 is able to move without rotating thelatch 2. Here, thefirst flange 21a and thehorizontal flange 22a constitute slider motion generating means. - Then, the
slider 4 moves along theslider rod 3 to the default latch position shown inFigs. 18 and 19 . In this default latch position, thevertical flange 22b is positioned directly below thesecond flange 21b, and there is a small vertical gap between theflanges slider 4 motion path until thestatic latch 16 infringes with thelatch 2 from its fully closed position. Thesecond flange 21b and thevertical flange 22b constitute pivot stopping means. - Note that, otherwise,
Embodiment 2 is of the same construction asEmbodiment 1 described above. - In normal door opening operation inside the unlocking zone, the
second roller 5 infringes with theramp 1 before thevertical flange 22b reaches thesecond flange 21b. Thelatch 2 can thus rotate to unlock. - Further, when the door is opened outside the unlocking zone, the
vertical flange 22b moves underneath thesecond flange 21b. From that moment thelatch 2 rotation is restricted due to the infringement between thevertical flange 22b and thesecond flange 21b. Then, thestatic latch 16 moves until it hooks behind thelatch 2, preventing further door opening operation. The worst case installation and car inclination conditions are considered in setting the gap between theflanges - Referring to
Figs. 20 through 24 , thefirst cam 9 is mounted on top of thecam bracket 18. Further, asecond cam 20 is mounted on top of thefirst cam 9.Shims 24 are applied in between thefirst cam 9 and thecam bracket 18 to adjust the vertical positions of the first andsecond cams second cams lever mechanism 25 does not get clamped between the first andsecond cams - Note that, otherwise,
Embodiment 3 is of the same construction asEmbodiment 2 described above. - During door closing motion, the
first roller 7 rides onto theflat part 9b of thefirst cam 9 from theinclined part 9c thereof, pivoting theslider rod 3 from the locked position to the unlocked position. Thefirst roller 7 then moves along theflat part 9b so theslider rod 3 is held in the unlocked position. When thefirst roller 7 reaches theinclined part 9a, thelatch 2 and theslider rod 3 rotate clockwise around thefirst hinge point 15 by their own weights. Thefirst roller 7 thus moves downward along theinclined part 9a, causing theslider 4 to move along theslider rod 3 towards thehinge block 12. Then theslider 4 returns to the default position where it is positioned near thehinge block 12 and thelatch 2 and theslider rod 3 are at their horizontal positions (unlocked positions). - In case the
latch 2 and theslider rod 3 do not return to their default positions by rotating clockwise around thefirst hinge point 15 due to their own weights, an extended part of theroller shaft member 23 contacts aninclined part 20a of thesecond cam 20. Then, continued door closing motion forces the extended part of theroller shaft member 23 to move downward along theinclined part 20a, causing thesecond hinge point 8 to move down. The first andsecond levers second hinge point 8 have to move together. Further, thesecond lever 6 and theslider 4 share the samethird hinge point 17. Accordingly, the motion of thesecond lever 6 forces theslider 4 to return to its default position. Consequently theslider rod 3, and thus the linkedlatch 2 as well, rotate clockwise around thefirst hinge point 15 during the last part of the door closing motion path, returning to their horizontal positions (locked positions). - As described above, according to
Embodiment 3, theslider 4 can be reliably returned to its default position in the state where the door is closed. - In
Embodiment 4, as shown inFig. 25 , the length of theflat part 9b of afirst cam 9A is such that theflat part 9b contacts thefirst roller 7 during the whole door motion path from a time thestatic latch 16 passes thelatch 2 until the door is fully opened. - Note that, otherwise,
Embodiment 4 is of the same construction asEmbodiment 1 described above. - Referring to
Fig. 25 , the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines. - As described above, the
first roller 7 is in contact with theflat part 9b of thefirst cam 9A during the whole door motion path until the door is really closed from its fully opened state, thereby maintaining the state (unlocked position) with theslider rod 3 having been rotated counterclockwise around thefirst hinge point 15 by a predetermined angle. Theswitch 13 is opened at this time, making it possible to achieve extended lifetime of theswitch 13. - Further, the contact between the
first roller 7 and thefirst cam 9A is kept by the gravity force or by the gravity force plus the spring force. Therefore, the contact between thefirst roller 7 and thefirst cam 9A can be maintained by means of an inexpensive structure. - In
Embodiment 5, as shown inFig. 26 , theflat part 9b of thefirst cam 9A and theflat part 20b of asecond cam 20A have such lengths that they contact thefirst roller 7 during the whole door motion path from a time thestatic latch 16 passes thelatch 2 until the door is fully opened. - Note that, otherwise,
Embodiment 5 is of the same construction asEmbodiment 3 described above. - Referring to
Fig. 26 , the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines. - As described above, the
first roller 7 is positioned between theflat part 9b of thefirst cam 9A and theflat part 20b of thesecond cam 20A during the whole door motion path until the door is really closed from its fully opened state, thereby maintaining the state (unlocked position) with theslider rod 3 having been rotated counterclockwise around thefirst hinge point 15 by a predetermined angle. Theswitch 13 is opened at this time, making it possible to achieve extended lifetime of theswitch 13. - Further, the
first roller 7 is positioned between theflat parts second cams slider rod 3 can be reliably maintained even during shock motion of the car. Thus closure of theswitch 13 during shock motion of the car can be prevented as well. - Note that the shape relation of the first and
second cams Fig. 26 but may be any other shape relation. - In
Embodiment 6, as shown inFig. 27 , the shape of thefirst cam 9 is such that thefirst cam 9 does not contact thefirst roller 7 during the end of the door closing path. - Note that, otherwise,
Embodiment 6 is of the same construction asEmbodiment 1 described above. - Referring to
Fig. 27 , the locking apparatus with the door fully opened is indicated by dotted lines while the locking apparatus with the door fully closed is indicated by solid lines. - In
Embodiment 6, the shape of thefirst cam 9 is such that thefirst cam 9 does not contact thefirst roller 7 during the end of the door closing path, that is, when theslider 4 is in its default position. Adjustment of the horizontal position of thefirst cam 9 is thus not required, and the installation of thefirst cam 9 is simplified. - Needless to say, the present invention is not restricted to
Embodiments 1 through 6 described above but may accommodate further modifications within the scope of the claims. - The advantages achievable by this invention as described include the following:
- No electrical power requirement to operate the lock;
- Easy to install at the job-site;
- Low maintenance needs;
- Independent of the hoistway door drive;
- Mounted inside the car door header and next to the entrance, in other words, behind the jamb of the door frame, preventing a negative effect on the appearance even in case of glass doors or a glass hoistway.
- A relatively simple lever mechanism is applied without any electrically operated actuators, so the locking operation is independent of the presence of electrical power.
- Installation on the job-site is very simple. Most installation jobs can be performed in the factory where the work environment is much better than at the job-site. The parts mounted to the car support frame and the parts mounted to the
door hanger 10 can all be installed in the factory. Theramp bracket 27 can be installed to the landing door frame in the factory as well. Theramp 1 can easily be installed at the job-site. - At the job-site, only a few possible part position adjustments remain. These are the following. It may be necessary to adjust the
second roller 5 position in the direction perpendicular to the door motion to keep sufficient clearance to the static parts in the hoistway. In this case, this can be simply arranged by adding or removing shims behind thesecond roller 5 mounting. - It might be necessary to adjust the position of the
first cam slots 18a in thecam bracket 18. Further, it might be necessary to adjust the position of theramp 1 in the direction parallel to the door motion to modify the gap between thesecond roller 5 and theramp 1. This can be simply effected by installing oneramp 1 at a proper position and using this ramp position as the plumb line for the positioning of the ramps at all landings. - Maintenance needs are low. In this locking apparatus, only lubrication of the bearings and periodical visual checks of the locking operation are necessary.
- In this locking apparatus, any type of hoistway door coupling mechanism can be applied, because this car door locking apparatus is totally independent of the drive mechanism of the hoistway doors. This is an advantage because in many cases the hoistway door coupling mechanism is part of a certified hoistway door locking apparatus. Modifications to the hoistway door locking apparatus may require new certification.
Claims (10)
- An elevator car door locking apparatus for locking a sliding door of a car of an elevator when the car is outside a landing zone, comprising:a ramp (1) mounted in a hoistway at each landing position; anda locking mechanism portion mounted on the car, comprisinga static latch (16) which moves along with the door;a first cam (9, 9A) which moves along with the door; anda lever mechanism (25) mounted to the car;the lever mechanism (25) comprises:a slider rod (3) whose one end is mounted to the car so as to be pivotable around a first hinge point (15), the slider rod (3) being adapted to assume a locked position where the slider rod (3) extends horizontally in a door opening direction and an unlocked position where the slider rod (3) has been pivoted upward from the locked position by a predetermined angle;a latch (2) arranged integrally with the slider rod such that the latch (2) can engage with the static latch (16) when the slider rod (3) is in the locked position and that the latch (2) does not engage with the static latch (16) when the slider rod (3) is in the unlocked position;the elevator car door locking apparatus being characterized in that:the locking mechanism portion comprises:a slider (4) arranged so as to move along the slider rod (3);a first roller (7) arranged below a position between the first hinge point (15) and the slider (4) and adapted to be rotatable around a second hinge point (8);a first lever (11) mounted such that its one end is pivotable around the first hinge point (15) and its other end is pivotable around the second hinge point (8), the first lever (11) being suspended between the first and second hinge points (15, 8);a second lever (6) mounted such that its one end is pivotable around the second hinge point (8) and its other end is mounted to the slider so as to be pivotable around a third hinge point (17), the second lever (6) being suspended between the second and third hinge points (8, 17); anda second roller (5) mounted to the slider (4) so as to be rotatable around the third hinge point (17);when, with the car positioned outside the landing zone, motion of the first cam (9, 9A) translating along with opening motion of the door is transferred to the first roller (7), the slider (4) moves in conjunction with motion of the first cam (9, 9A) along the slider rod (3) in a door opening direction to keep the slider rod (3) in the locked position, and the static latch (16) moving along with the opening motion of the door engages with the latch (2), disabling opening operation of the door; andwhen, with the car positioned inside the landing zone, motion of the first cam (9, 9A) moving along with opening motion of the door is transferred to the first roller (7), the slider (4) moves in conjunction with motion of the first cam (9, 9A) along the slider rod (3) in a door opening direction to cause the second roller (5) to infringe with the ramp (1), and subsequent motion of the first cam (9, 9A) causes the slider rod (3) to pivot from the locked position to the unlocked position with a result that the static latch (16) passes the latch (2) without engaging with the latch (2), enabling opening operation of the door.
- An elevator car door locking apparatus according claim 1, characterized in that the second roller (5) does not contact the ramp (1) when the door is fully closed.
- An elevator car door locking apparatus according to claim 1, characterized in that the first cam (9) is adapted to cause the slider rod (3) to pivot to the unlocked position only when, with the car positioned inside the landing zone, the static latch (16) has to pass the latch (2) without engaging with the latch (2).
- An elevator car door locking apparatus according to claim 1, characterized in that when the car is inside the landing zone, the first cam (9A) is adapted to keep the slider rod (3) in the unlocked position during a whole motion path of the door from a time the static latch (16) passes the latch (2) until the door is fully opened.
- An elevator car door locking apparatus according to claim 1, characterized in that in the lever mechanism (25), a drive force for moving the slider (4) along the slider rod (3) is greater than a pivoting force with which the slider rod (3) is pivoted from the locked position to the unlocked position.
- An elevator car door locking apparatus according to claim 1, characterized in that the ramp (1) is positioned next to an entrance behind a jamb of a hoistway door frame.
- An elevator car door locking apparatus according to claim 1, characterized in that the elevator car door locking apparatus comprises a second cam (20, 20A) which moves along with the door, the second cam (20) being adapted to operate in cooperation with the first roller (7) during a last part of a motion path of closing operation of the door to generate a drive force for causing the slider rod 3 to pivot from the unlocked position to the locked position.
- An elevator car door locking apparatus according to claim 7, characterized in that a shaft member (23) of the first roller (7) is extended so as to contact the second cam, the shaft member (23) being adapted to move in conjunction with motion of the second cam (20) while in contact with the second cam to generate a drive force for causing the slider rod (3) to pivot from the unlocked position to the locked position.
- An elevator car door locking apparatus according to claim 1, characterized in that the lever mechanism (25) comprises slider motion generating means (21a, 22a) for converting, at start of closing operation of the door, a pivoting force with which the slider rod (3) is pivoted from the locked position to the unlocked position into motion of the slider (4) along the slider rod (3).
- An elevator car door locking apparatus according to claim 1, characterized in that the lever mechanism (25) comprises pivot stopping means (21b, 22b) for stopping pivoting operation of the slider rod (3) from the locked position to the unlocked position during a final part of a motion path of the slider (4) until the static latch (16) moves to a position of the latch (2) from a fully closed position when the car is outside the landing zone.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/001638 WO2006080094A1 (en) | 2005-01-28 | 2005-01-28 | Elevator car door locking apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1841682A1 EP1841682A1 (en) | 2007-10-10 |
EP1841682A4 EP1841682A4 (en) | 2012-05-02 |
EP1841682B1 true EP1841682B1 (en) | 2014-03-19 |
Family
ID=36740129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05704398.6A Active EP1841682B1 (en) | 2005-01-28 | 2005-01-28 | Elevator car door locking apparatus |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1841682B1 (en) |
JP (1) | JP4292207B2 (en) |
CN (1) | CN101031497B (en) |
WO (1) | WO2006080094A1 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009128155A1 (en) | 2008-04-17 | 2009-10-22 | 三菱電機株式会社 | Elevator car door lock |
CN103068713B (en) * | 2010-08-24 | 2015-06-24 | 三菱电机株式会社 | Elevator device |
CN102951529B (en) * | 2011-08-17 | 2015-04-01 | 上海三菱电梯有限公司 | Elevator car door locking device |
WO2015008386A1 (en) | 2013-07-19 | 2015-01-22 | 三菱電機株式会社 | Elevator car door lock device |
JP6804517B2 (en) | 2015-08-04 | 2020-12-23 | オーチス エレベータ カンパニーOtis Elevator Company | Elevator car door interlock with door frame lock |
WO2017023927A1 (en) | 2015-08-04 | 2017-02-09 | Otis Elevator Company | Elevator car door interlock |
CN107399661B (en) * | 2016-05-19 | 2019-08-27 | 三菱电机上海机电电梯有限公司 | Elevator car door locking device |
CN105800437B (en) * | 2016-05-26 | 2017-10-03 | 永大电梯设备(中国)有限公司 | Elevator cab door is anti-to take off device |
CN106081819B (en) * | 2016-08-09 | 2018-06-12 | 日立电梯(中国)有限公司 | Elevator car door locking device and elevator |
IT201700052995A1 (en) * | 2017-05-16 | 2018-11-16 | Wittur Holding Gmbh | LOCK ASSEMBLY, LIFT SYSTEM |
WO2019025269A1 (en) * | 2017-07-31 | 2019-02-07 | Inventio Ag | Securing system for a door assembly of an elevator, and elevator |
US11046557B2 (en) * | 2018-05-01 | 2021-06-29 | Otis Elevator Company | Elevator door interlock assembly |
US11040858B2 (en) * | 2018-05-01 | 2021-06-22 | Otis Elevator Company | Elevator door interlock assembly |
US11155444B2 (en) | 2018-05-01 | 2021-10-26 | Otis Elevator Company | Elevator door interlock assembly |
US11040852B2 (en) | 2018-05-01 | 2021-06-22 | Otis Elevator Company | Elevator car control to address abnormal passenger behavior |
US11034548B2 (en) * | 2018-05-01 | 2021-06-15 | Otis Elevator Company | Elevator door interlock assembly |
WO2019211507A1 (en) * | 2018-05-04 | 2019-11-07 | Kone Corporation | Lock arrangement in elevator landing door |
WO2020188683A1 (en) * | 2019-03-18 | 2020-09-24 | 三菱電機株式会社 | Elevator car door device |
CN110054062B (en) * | 2019-04-16 | 2024-04-02 | 杭州优迈机电科技有限公司 | Elevator door lock device |
KR102349048B1 (en) * | 2020-02-20 | 2022-01-11 | 현대엘리베이터주식회사 | Separate elevator car door lock |
US11760604B1 (en) | 2022-05-27 | 2023-09-19 | Otis Elevator Company | Versatile elevator door interlock assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2083012T3 (en) * | 1991-05-14 | 1996-04-01 | Inventio Ag | LIFT. |
FI96676C (en) * | 1994-10-31 | 1996-08-12 | Kone Oy | Locking device for the basket door to a lift and method for locking and unlocking the basket door |
JP3363711B2 (en) * | 1996-08-05 | 2003-01-08 | 三菱電機ビルテクノサービス株式会社 | Elevator car door interlock device |
FR2858002B1 (en) * | 2003-07-22 | 2005-09-02 | Thyssenkrupp Elevator Mfg F | METHOD FOR ADJUSTING AN ELEVATOR LEVEL DOOR LOCK |
-
2005
- 2005-01-28 CN CN2005800173495A patent/CN101031497B/en active Active
- 2005-01-28 EP EP05704398.6A patent/EP1841682B1/en active Active
- 2005-01-28 JP JP2006520540A patent/JP4292207B2/en active Active
- 2005-01-28 WO PCT/JP2005/001638 patent/WO2006080094A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2008528399A (en) | 2008-07-31 |
CN101031497A (en) | 2007-09-05 |
WO2006080094A1 (en) | 2006-08-03 |
JP4292207B2 (en) | 2009-07-08 |
CN101031497B (en) | 2010-10-13 |
EP1841682A1 (en) | 2007-10-10 |
EP1841682A4 (en) | 2012-05-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1841682B1 (en) | Elevator car door locking apparatus | |
EP3564177B1 (en) | Elevator door interlock assembly | |
JP5649721B2 (en) | Elevator door coupler assembly | |
CN110422740B (en) | Elevator door interlocking piece assembly | |
US6446759B1 (en) | Door coupler and latch system for elevator car and landing doors | |
EP3564178B1 (en) | Method and assembly for positioning an elevator door interlock | |
US5690189A (en) | Apparatus and method for locking and unlocking the door of an elevator car | |
US20220024725A1 (en) | Elevator door interlock assembly | |
US5651428A (en) | Stationary actuator moving vane elevator car door coupling | |
CN111039133A (en) | Elevator landing door unlocking system | |
EP0676360A1 (en) | Elevator car door coupling | |
US6189658B1 (en) | Procedure for moving the landing door of an elevator, and a door coupler | |
AU2005284287B2 (en) | Floor lock | |
US20040066047A1 (en) | Device for securing a door leaf against unintentional deflection | |
US6173815B1 (en) | Door coupler and locking device | |
EP3564175B1 (en) | Elevator door interlock assembly | |
EP1841681B1 (en) | Elevator car door locking apparatus | |
US5485896A (en) | Rotary elevator car door coupling | |
KR100869610B1 (en) | Elevator car door locking apparatus | |
EP0896565A1 (en) | Door coupler and locking device | |
KR100812483B1 (en) | Interlock device for car door of elevator | |
JP2784582B2 (en) | Door system for track vehicle system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20061116 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR NL |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR NL |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20120330 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B66B 13/18 20060101AFI20120326BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20131018 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR NL |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602005043005 Country of ref document: DE Effective date: 20140430 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602005043005 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20141222 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602005043005 Country of ref document: DE Effective date: 20141222 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20150930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150202 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 602005043005 Country of ref document: DE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20191212 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20210201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210201 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230512 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20231205 Year of fee payment: 20 |