CN217350337U - Elevator car door lock - Google Patents

Abstract

The utility model provides an elevator car door lock, which comprises a door knife bottom plate, a door knife arm component, a starting block, a latch hook component, a verification switch and an unlocking plectrum, wherein the door knife arm component, the starting block and the latch hook component are movably arranged on the door knife bottom plate, and the unlocking plectrum is respectively connected with the door knife arm component and the starting block; the starting block is used for enabling the door knife arm component to drive the unlocking shifting piece to press the lock hook component and enable the lock hook component to be lifted upwards and drive the switch contact to be separated from the switch socket, so that unlocking is realized; the starting block is also used for driving the unlocking shifting piece to rotate, so that the unlocking shifting piece is reset and the pressure on the latch hook assembly is relieved, the latch hook assembly moves downwards through dead weight and drives the switch contact to contact with the switch socket, and locking is realized. Compared with the prior art, the utility model discloses simple structure, installation and debugging are convenient and the security performance is high, under any circumstance, the regional homoenergetic of unblanking is opened the door from the sedan-chair in with the sedan-chair outward, and the non-region of unblanking can not be followed in the sedan-chair and the sedan-chair is taken off the door outward, can improve the reliability of sedan-chair lock.

Description

Elevator car door lock

Technical Field

The utility model relates to an elevator annex specifically relates to an elevator sedan-chair lock.

Background

With the increasing of high-rise buildings in the modern society, people have higher and higher requirements and more frequent use of elevators, the elevators are essential transportation tools in life and production, and the safety of elevator operation is very important. At present, the proportion of door system faults and improper maintenance operation in elevator accidents is quite high, so that the safety problem of an elevator door system is a major concern in the whole elevator industry.

The new national standard provides that when the car is at a landing, the car door can be opened by a force not exceeding 300N in the car, or the car can be opened by a force not exceeding 300N after the car is unlocked by a triangular key or the landing door is unlocked by the car door, and the car can be opened manually when the elevator is in abnormal operation. The elevator door should have an anti-theft function, and when the elevator car is at a non-landing, people in the elevator car cannot open the car door, and the car door cannot be opened even when an elevator motor is electrified accidentally, so that the accident of passengers caused by the opening of the elevator at the non-landing is avoided.

The existing car door lock has the advantages that the door cannot be pulled out of a car under the condition that a motor in an unlocking area is not powered off, and meanwhile, the risk that a door knife accidentally powered off in a non-unlocking area impacts a door ball of a floor door lock exists; still other door locks require the addition of additional attachment devices at the landing door assembly, which undoubtedly add additional maintenance difficulty and cost to the installation and maintenance of high-rise elevators.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides an elevator sedan-chair lock, concrete technical scheme is as follows:

an elevator car door lock comprising:

the door knife arm assembly, the starting block and the lock hook assembly are movably arranged on the door knife bottom plate, and the unlocking shifting piece is respectively connected with the door knife arm assembly and the starting block; the verification switch comprises a switch contact and a switch socket, the switch contact is arranged on the latch hook assembly, and the switch socket is arranged on an external base positioned below the latch hook assembly;

the starting block is used for driving the door knife arm component to be folded inwards when the lock hook component is unlocked, so that the door knife arm component drives the unlocking shifting piece to press the lock hook component, and the lock hook component is lifted upwards and drives the switch contact to be separated from the switch socket, and unlocking is realized;

the starting block is also used for driving the door knife arm component to be outwards opened and driving the unlocking shifting piece to rotate when the locking hook component is locked, so that the unlocking shifting piece is reset and the pressure on the locking hook component is relieved, the locking hook component moves downwards through self weight and drives the switch contact to contact the switch socket, and locking is realized.

In a specific embodiment, a first arc-shaped groove is formed in the door knife bottom plate, a starting block pin shaft is arranged on the starting block, and the starting block pin shaft is arranged in the first arc-shaped groove in a penetrating mode and connected with the door knife arm assembly;

the bottom of the unlocking shifting piece is provided with a first U-shaped notch which is used for clamping the starting block pin shaft, and the starting block pin shaft is used for driving the unlocking shifting piece to rotate through the door knife arm component.

In a specific embodiment, an arc surface is arranged at the bottom of the unlocking poking piece, and the circle center of the arc surface is consistent with the rotation center of the starting block;

the arc surface is used for enabling the unlocking shifting piece to press the lock hook assembly through deviation when the unlocking shifting piece deviates from the rotation center of the starting block.

In a specific embodiment, the latch hook assembly comprises a latch hook, a latch hook pin and a latch hook bearing, the latch hook is rotatably arranged on the door vane base plate, one end of the latch hook pin is connected with the latch hook, and the latch hook bearing is arranged at the other end of the latch hook pin;

the unlocking shifting piece is used for driving the arc surface to press the lock hook bearing on the lock hook pin shaft through the door knife arm component, so that the lock hook is lifted upwards.

In a specific embodiment, the latch hook assembly further comprises a latch hook limiting shaft, and a second arc-shaped groove is formed in the door vane bottom plate;

the lock hook limiting shaft is connected with the lock hook and is movably arranged in the second arc-shaped groove.

In a specific embodiment, a flexible piece is arranged on the starting block pin shaft, and a third arc-shaped groove is further formed in the starting block;

the starting block pin shaft penetrates through the third arc-shaped groove, and the flexible piece is used for swinging up and down in the third arc-shaped groove.

In a specific embodiment, the door vane further comprises a ball striking swing block assembly, wherein the ball striking swing block assembly comprises a swing block, a first ball striking, a limiting block and a swing block torsion spring, and the swing block is rotatably arranged on the door vane bottom plate;

the limiting block is arranged on the swinging block, the upper end of the door knife bottom plate is provided with a slot, and the starting block is matched with the slot and used for limiting the swinging block; the top of the starting block is provided with a clamping groove, and the lower end of the swinging block is used for being clamped and matched with the clamping groove so as to relatively fix the swinging block and the starting block;

the first ball is arranged at the upper end of the swinging block and used for touching a striking bow on the bottom plate of the door knife so as to enable the swinging block to rotate anticlockwise and enable the limiting block to be separated from the clamping groove; the swing block torsion spring is hooked with the swing block and used for releasing potential energy to enable the limiting block to be clamped with the clamping groove, and the swing block torsion spring is further used for accumulating the potential energy to enable the limiting block to be separated from the clamping groove.

In a specific embodiment, the device further comprises a spring pressure rod assembly, wherein the spring pressure rod assembly comprises a pressure rod and a spring;

a fixed shaft is arranged on the starting block, and one end of the pressure lever is connected with the fixed shaft;

the side of the door knife bottom plate is provided with a through hole, the other end of the pressing rod is slidably arranged on the spring and the through hole in a penetrating mode, and the spring is used for enabling the pressing rod to rotate around the fixed shaft to reset.

In a specific embodiment, one end of the pressure lever is provided with a second U-shaped notch, and one end of the pressure lever is connected with the fixed shaft through the second U-shaped notch.

In a specific embodiment, the door vane further comprises a second ball and a third ball, wherein the second ball and the third ball are both arranged on the door vane bottom plate;

the second colliding ball is used for limiting the starting block rotating along the first direction, the third colliding ball is used for limiting the starting block rotating along the second direction, and the first direction is opposite to the second direction.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a pair of elevator sedan-chair lock, simple structure, installation and debugging are convenient and the security performance is high, under any circumstance, the regional homoenergetic of unblanking is opened door with the sedan-chair outward from the sedan-chair in, and the non-region of unblanking can not be followed in the sedan-chair and the sedan-chair is taken off the door outward, can improve the reliability of sedan-chair lock.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of a first structure of an elevator car door lock in an embodiment;

FIG. 2 is a rear view of a first configuration of an elevator door lock in an embodiment;

FIG. 3 is a front view of a second structure of the elevator car door lock in the embodiment (the unlocking state of the latch hook component under the condition of normal door opening);

FIG. 4 is a front view of a third structure of the elevator car door lock in the embodiment (the unlocking state of a lock hook assembly when doors are opened inside and outside a car in an unlocking area);

fig. 5 is a front view of a fourth structure of the elevator car door lock in the embodiment (a locking state of a locking hook component when a motor is opened by mistake in a non-unlocking area).

Description of the main element symbols:

1-left door knife arm; 2-door knife bottom plate; 3-lower connecting block; 4-emergency unlocking plate; 5-latch hook tension spring; 6-a verification switch; 7-a switch contact; 8-contact mounting plate; 9-a switch fixing plate; 10-a latch hook; 11-a pressure bar; 12-a spring; 13-upper connecting block; 14-swinging a block; 15-a first ball strike; 16-a limiting block; 17-right gate knife arm; 18-unlocking plectrum; 19-starting block pin shaft; 20-latch hook pin shaft; 21-a start block; 22-plectrum pin shaft; 23-a first pin; 24-a second ball strike; 25-an actuating lever; 26-a pendulum block torsion spring; 27-a fixed shaft; 28-third billiard; 29-lock hook limit shaft; 30-latch hook bearing.

Detailed Description

Examples

As shown in fig. 1 to 5, the present embodiment provides an elevator car door lock, including: the door knife bottom plate 2, the door knife arm component, the starting block 21, the lock hook component, the verification switch 6 and the unlocking shifting sheet 18 are fixed on a right hanging plate of the gantry crane through screws, the door knife arm component, the starting block 21 and the lock hook component are movably arranged on the door knife bottom plate 2, a first bearing is arranged in the middle of the starting block 21, and the starting block is arranged on a first pin shaft 23 connected with the door knife bottom plate 2 through a clamp spring and can freely rotate; the unlocking shifting piece 18 is respectively connected with the door knife arm assembly and the starting block 21, and specifically, the unlocking shifting piece 18 is provided with a second bearing, is installed on a shifting piece pin shaft 22 fixed with the starting block 21 through screw connection, and can rotate freely. The verification switch 6 comprises a switch contact 7 and a switch socket, the switch contact 7 is arranged on the latch hook assembly, and the switch socket is arranged on an external base located below the latch hook assembly.

Specifically, door tool arm assembly includes left door tool arm 1, right door tool arm 17, goes up connecting block 13 and lower connecting block 3, and starting block round pin axle 19 below connects in right door tool arm 17, specifically fixes in the middle section position of right door tool arm 17 and passes the first arc wall on door tool bottom plate 2 below to the back of door tool bottom plate 2. The upper connecting block 13 and the lower connecting block 3 are respectively connected with the door vane bottom plate 2 and can rotate freely, namely the middle part of the upper connecting block 13 is hinged with the door vane bottom plate 2, and the middle part of the lower connecting block 3 is hinged with the door vane bottom plate 2. The upper end and the lower end of the left door knife arm 1 are respectively hinged with one end of the upper connecting block 13 and one end of the lower connecting block 3, the upper end and the lower end of the right door knife arm 17 are respectively hinged with the other end of the upper connecting block 13 and the other end of the lower connecting block 3, the left door knife arm 1, the upper connecting block 13, the right door knife arm 17 and the lower connecting block 3 are sequentially hinged to form a parallelogram structure, and the left door knife arm 1 and the right door knife arm 17 can be outwards opened or inwards clamped along with the upper connecting block 13 and the lower connecting block 3. This embodiment still includes actuating lever 25, and actuating lever 25 one end sets up on the piece 21 that starts, and the other end is connected in the quick-witted hold-in range of gantry crane.

When the door is opened, the starting rod 25 acts to drive the starting block 21 to rotate, so that the left door knife arm 1 and the right door knife arm 17 move, the left door knife arm 1 and the right door knife arm 17 are folded under the action of the upper connecting block 13 and the lower connecting block 3 to clamp a layer door ball, the starting block pin shaft 19 on the right door knife arm 17 drives the unlocking shifting piece 18 to rotate, the unlocking shifting piece 18 presses the lock hook assembly, the lock hook assembly is lifted upwards and drives the switch contact 7 to be separated from the switch, and the function of unlocking the layer car door is realized.

The starting block 21 is also used for driving the door knife arm assembly to open outwards and driving the unlocking shifting piece 18 to rotate when the locking hook assembly is locked, so that the unlocking shifting piece 18 resets and removes pressure on the locking hook assembly, the locking hook assembly moves downwards through self weight and drives the switch contact 7 to directly contact with the switch socket, and locking is achieved.

Preferably, this embodiment simple structure, installation and debugging are convenient and the security performance is high, and under any circumstance, the regional homoenergetic of unblanking opens the door from the sedan-chair inside and sedan-chair outside, and the regional door of can not all be taken off from the sedan-chair inside and sedan-chair outside in the non-unblanking, can improve the reliability of sedan-chair lock.

In this embodiment, a first arc-shaped groove is formed in the door knife base plate 2, a waist-shaped arc hole is preferably formed in the first arc-shaped groove, a starting block pin shaft 19 is arranged on the starting block 21, and the starting block pin shaft 19 penetrates through the first arc-shaped groove and is connected with the door knife arm assembly (specifically connected with the right door knife arm 17). The bottom of the unlocking shifting piece 18 is provided with a first U-shaped notch, the first U-shaped notch is used for clamping a starting block pin shaft 19, and the starting block pin shaft 19 is used for driving the unlocking shifting piece 18 to rotate through a door knife arm component.

Specifically, the lower end of the starting block 21 is provided with a third arc-shaped groove, the starting block pin shaft 19 on the right door knife arm 17 penetrates through a first U-shaped groove opening in the unlocking shifting piece 18 to the third arc-shaped groove at the lower end of the starting block 21, the starting block pin shaft 19 is clamped by the first U-shaped groove opening, the starting block pin shaft 19 is driven by the motion of the right door knife arm 17 to swing the first U-shaped groove opening of the unlocking shifting piece 18, and therefore free rotation of the unlocking shifting piece 18 is achieved.

In this embodiment, the bottom of the unlocking pulling piece 18 is provided with an arc surface, the circle center of the arc surface is consistent with the rotation center of the starting block 21, the arc surface arranged at the bottom of the unlocking pulling piece 18 moves in cooperation with the locking hook assembly, and when the unlocking pulling piece 18 deviates from the rotation center of the starting block 21, the arc surface makes the unlocking pulling piece 18 press the locking hook assembly through deviation.

In this embodiment, the latch hook assembly includes a latch hook 10, a latch hook pin 20 and a latch hook bearing 30, the latch hook 10 is rotatably disposed on the door vane base plate 2, and specifically, the latch hook 10 is installed on a bearing cover fixed to the door vane base plate 2 through a snap spring and can freely rotate. One end of the latch hook pin shaft 20 is connected with the tail of the latch hook 10, the latch hook bearing 30 is arranged at the other end of the latch hook pin shaft 20, the arc surface arranged at the bottom of the unlocking plectrum 18 is matched with the latch hook bearing 30 on the latch hook pin shaft 20 to move, specifically, the unlocking plectrum 18 is used for driving the arc surface to press the latch hook bearing 30 on the latch hook pin shaft 20 through the door blade arm component, so that the latch hook 10 is lifted upwards. Specifically, the actuating block pin 19 on the right door blade arm 17 drives the unlocking pulling piece 18 to rotate, so that the arc surface at the bottom of the unlocking pulling piece 18 presses the locking hook pin 20 on the locking hook 10, the locking hook 10 is lifted upwards, and the switch contact 7 is driven to be separated from the switch, thereby realizing the function of unlocking the car door.

In this embodiment, the latch hook assembly further includes a latch hook limiting shaft 29, a second arc-shaped groove is formed in the door vane bottom plate 2, the latch hook limiting shaft 29 is connected with the latch 10 hook and movably arranged in the second arc-shaped groove, and the second arc-shaped groove is preferably a waist-shaped arc-shaped groove.

Specifically, the upper end of the latch hook 10 is provided with a latch hook limiting shaft 29, the door vane bottom plate 2 is provided with a waist-shaped arc groove, and the latch hook limiting shaft 29 can freely move in the waist-shaped arc groove formed in the door vane bottom plate 2. When the right knife arm 17 is clamped and swung, the starting block pin 19 on the right knife arm 17 drives the first U-shaped notch on the unlocking plectrum 18 to swing, so that the arc surface at the bottom of the unlocking plectrum 18 presses the locking hook bearing 30 on the locking hook pin 20, the locking hook 10 rotates clockwise, the left end of the locking hook 10 is separated from the switch fixing plate 9 below, and meanwhile, the switch contact 7 is separated from the switch, so that unlocking is realized.

Specifically, verify switch 6 and include switch contact 7, switch socket, switch, contact mounting panel 8 and switch fixed plate 9, switch fixed plate 9 sets up on door sword bottom plate 2, and contact mounting panel 8 sets up the arm end at latch hook 10, and switch contact 7 is installed on contact mounting panel 8 and is realized electrical interlocking with the switch cooperation on the switch fixed plate 9, and the arm end of latch hook 10 can be colluded with switch fixed plate 9 on door sword bottom plate 2 each other and be linked together.

In this embodiment, still include and promptly separate locking plate 4, promptly separate locking plate 4 and be connected with door sword bottom plate 2 through the screw to can the free rotation, promptly separate 4 one ends of locking plate and be equipped with waist shape spout, the waist shape spout in promptly separating locking plate 4 is passed to first fixed pin axle on the door sword bottom plate 2, makes promptly separate locking plate 4 can be in waist shape spout within range luffing motion. A rescue rope is fixed at the lower end of the emergency unlocking plate 4, a round hole is formed in the upper end of the emergency unlocking plate 4, a second fixing pin shaft is arranged at the arm end of the lock hook 10 close to the rotation center of the lock hook 10, and the second fixing pin shaft is used for installing a lock hook tension spring 5; two ends of the lock hook tension spring 5 are respectively hooked with a round hole at the upper end of the emergency unlocking plate 4 and a second fixed pin fixed on the arm of the lock hook 10, so that auxiliary reset is realized. During normal conditions, promptly separate locking plate 4 and be in the epistasis under latch hook extension spring 5 effect, when needs rescue is unblanked, the rope is rescued in the downward pulling, promptly separates locking plate 4 and moves down, promptly separates the upper end oppression of locking plate 4 and is close to the lower extreme position of latch hook 10 centre of rotation, makes latch hook 10 clockwise rotation, realizes the unblock.

In this embodiment, the starting block pin shaft 19 is provided with a flexible member, the lower end of the starting block 21 is provided with a third arc-shaped groove, the starting block pin shaft 19 penetrates through the third arc-shaped groove on the starting block 21 and is fixed with the flexible member at the rear end through a snap spring, and the flexible member can swing up and down in the third arc-shaped groove; the flexible part is preferably a rubber ring, and the third arc-shaped groove is preferably a waist-shaped arc hole.

In this embodiment, still include the ball pendulum subassembly that collides, the ball pendulum subassembly includes pendulum piece 14, first ball 15, stopper 16 and pendulum piece torsional spring 26 that collides, pendulum piece 14 rotationally sets up on door sword bottom plate 2, installs the third bearing on pendulum piece 14 promptly, installs on the third fixed pin axle fixed with door sword bottom plate 2 through the jump ring to can freely rotate.

The limiting block 16 is arranged on the swinging block 14, the upper end of the door vane bottom plate 2 is provided with a slot, and the starting block 21 is matched with the slot and used for limiting the swinging block 14; the top of the starting block 21 is provided with a clamping groove, and the lower end of the swing block 14 is used for being in clamping fit with the clamping groove so as to enable the swing block 14 and the starting block 21 to be relatively fixed, namely, the swing block and the starting block are kept immovable.

The first ball 15 is arranged at the upper end of the swing block 14 through the pillar, the first ball 15 is connected with the pillar through the snap spring, and when the door is closed, the first ball 15 is used for touching the impact bow on the bottom plate 2 of the door knife, so that the swing block 14 rotates anticlockwise and the limit block 16 is separated from the clamping groove. The second pin shaft is provided with a swing block torsion spring 26 and is hooked with the upper end face of the swing block 14, the swing block torsion spring 26 is hooked with the swing block 14 and used for releasing potential energy to enable the limiting block 16 to be clamped with the clamping groove, and the swing block torsion spring 26 is also used for accumulating the potential energy to enable the limiting block 16 to be separated from the clamping groove; specifically, the actuating rod 25 drives the actuating block 21 to rotate when actuated, and the lower end of the swing block 14 falls into the slot formed at the top of the actuating block 21 through the swing block torsion spring 26 and remains stationary.

In this embodiment, the door vane further comprises a spring compression bar assembly, the spring compression bar assembly comprises a compression bar 11 and a spring 12, a fixed shaft 27 is arranged on the starting block 21, two ends of the compression bar 11 are respectively connected with the starting block 21 and the door vane base plate 2, and the starting block 21 is rotated and reset through the spring 12.

One end of the pressure lever 11 is provided with a second U-shaped notch, and one end of the pressure lever 11 is connected with a fixed shaft 27 arranged on the starting block 21 through the second U-shaped notch; the side edge of the door knife bottom plate 2 is provided with a through hole, the other end of the pressure lever 11 slidably penetrates through the spring 12 and the through hole, namely, the other end of the pressure lever 11 penetrates through the spring 12 and the through hole formed in the side edge of the door knife bottom plate 2, the spring 12 is used for enabling the pressure lever 11 to rotate around the fixed shaft 27 to reset, and the pressure lever 11 can freely rotate around the fixed shaft 27 under the action of the spring 12 and can freely slide in the through hole; the spring 12 is preferably a compression spring, and the through hole formed in the side edge of the door vane base plate 2 is preferably a circular hole.

In the embodiment, the door vane further comprises a second ball 24 and a third ball 28, wherein the second ball 24 and the third ball 28 are both arranged on the back surface of the door vane bottom plate 2, the second ball 24 is used for limiting the starting block 21 rotating along the first direction, the third ball 28 is used for limiting the starting block 21 rotating along the second direction, the limit position of the starting block 21 rotating along the second direction is limited by the second ball 24 and the third ball 28, and the first direction is opposite to the second direction; the second 24 and third 28 balls are preferably limit balls.

Preferably, in this embodiment, the operation principle of the elevator car door lock includes:

as shown in fig. 3, when the car is in the unlocked zone and the door is normally open: the synchronous belt moves towards the door opening direction under the action of the motor, the synchronous belt drives the starting rod 25 to enable the starting block 21 to rotate, the starting block 21 rotates to transmit the motion to the right door knife arm 17 through the starting block pin shaft 19, the right door knife arm 17 swings and transmits the motion to the left door knife arm 1 through the up-down movable connecting block, and the left door knife arm 17 and the right door knife arm 17 are folded inwards; in the folding process, the left door knife arm 1 firstly touches the landing door to unlock the door ball, and the landing door is unlocked. The starting block 21 continues to rotate until it contacts the second ball 24, and the swing block torsion spring 26 releases pressure (potential energy) to make the swing block 14 fall into the slot provided at the top of the starting block 21. Along with the continuous furling of left-door knife arm 1 and right-door knife arm 17, right-door knife arm 17 touches main gate ball, and gate ball prevents left-door knife arm 1 and right-door knife arm 17 to move and transmits the motion to starting block pin 19, makes starting block pin 19 move to the upside from the third arc wall downside that sets up on starting block 21, and starting block pin 19 drives the plectrum 18 of unblanking simultaneously and swings, and the arc surface of unblanking plectrum 18 bottom eccentric oppresses latch hook bearing 30 on latch hook pin 20, makes latch hook 10 rotate clockwise, realizes normally opening the door unblock. At this time, the pressing lever 11 slides in the door opening direction as the actuator block 21 rotates, and the spring 12 on the pressing lever 11 releases the pressing force.

As shown in fig. 1, when the car is in the unlocked area and normally closed: the motor moves to enable the synchronous belt to move towards the door closing direction, when the door is closed to be in place, the first collision ball 15 at the upper end of the swinging block 14 touches the collision bow fixed on the bottom plate 2 of the door knife, the swinging block 14 rotates anticlockwise and lifts, and the swinging block torsion spring 26 is stressed. The clamping groove arranged on the starting block 21 is separated from the swinging block 14, the starting rod 25 moves towards the door closing direction under the action of the synchronous belt, so that the starting block 21 rotates anticlockwise, the starting block 21 transmits the motion to the right knife arm 17 through the starting pin shaft, the right knife arm 17 swings and transmits the motion to the left knife arm 1 through the upper movable connecting block and the lower movable connecting block, the left knife arm 17 and the right knife arm 17 are opened outwards, a door ball is released, and the hall door lock is closed. The starting block 21 continues to rotate until the starting block contacts the third collision ball 28, the starting pin shaft moves from the upper side to the lower side of the third arc-shaped groove formed in the starting block 21, meanwhile, the starting pin shaft drives the unlocking shifting piece 18 to swing, the circle center of the arc surface at the bottom of the unlocking shifting piece 18 is reset to the rotating center of the starting block 21, pressure on a lock hook bearing 30 on the lock hook pin shaft 20 is relieved, the lock hook 10 falls down through the self weight of the lock hook arm, and pulling force is released through the lock hook tension spring 5 to assist in resetting, so that the goal of closing the door in place is achieved and guaranteed. At this time, the pressing lever 11 slides in the door closing direction as the actuator block 21 rotates, and the spring 12 on the pressing lever 11 is compressed.

As shown in fig. 4, when the car is in the unlocked zone and the doors are being walked away from the car: regardless of whether the motor is electrified, the action of opening the door from the car makes the car door move towards the door opening direction, the door hanging plate drives the door knife bottom plate 2 to move towards the door opening direction, the synchronous belt does not act, the starting block 21 also keeps still, and the left door knife arm 1 and the right door knife arm 17 cannot be clamped inwards under the action of the starting pin shaft. Because a certain gap is reserved between the front end of the lock hook 10 and the switch fixing plate 9, the door hanging plate moves towards the door opening direction until the left door knife arm 1 touches the movable door ball of the landing door, so that the landing door is unlocked and then touches the main door ball. The main gate ball transmits resistance to the starting pin shaft through the right gate knife arm 17, so that the starting pin shaft moves to the upper side from the lower side of a third arc-shaped groove arranged on the starting block 21, the action is consistent with the normal opening of a door, and the layer car door is opened simultaneously.

As shown in fig. 4, when the car is in the unlocked zone and the door is being raked from outside the car: earlier with the unblock of layer door with the triangle key, make the layer door to the direction motion that opens the door, move to layer door owner door ball and touch right door sword arm 17, right door sword arm 17 transmits the resistance of layer door owner door ball for the start pin axle, makes the third arc wall downside motion to the upside that the start pin axle set up on by the starting block 21, and the action is unanimous with normally opening the door afterwards, and the sedan-chair door is by the unblock, and layer sedan-chair door is opened simultaneously.

As shown in fig. 5, when the car is in the non-unlocking zone and the motor mistakenly opens the door: the motor action makes the hold-in range to the direction motion that opens the door, and the hold-in range drives actuating lever 25 and makes the piece 21 rotatory that opens, and the piece 21 rotation is given the motion to left door tool arm 1 and right door tool arm 17, makes left door tool arm 1 and right door tool arm 17 inwards draw in through starting the round pin axle. Because in the non-region of unblanking, left door sword arm 1 and right door sword arm 17 can't contact layer door ball at the in-process of drawing in, start the round pin axle and do not move, latch hook 10 does not lift, and whole to the direction motion of opening the door of sedan-chair to latch hook 10 catches on the switch fixed plate 9 of fixing on the door machine, and the distance between normal closed door state latch hook 10 and the hook plate is less than 50mm, so when the sedan-chair door was opened by mistake, the interval of opening the door satisfied national standard requirement.

When the car is in the non-unlocking area and the door is opened in the car: the motor synchronous belt does not act, the starting rod 25 and the starting block 21 also keep still, the door hanging plate drives the door knife bottom plate 2 to move towards the door opening direction when the door is opened, and the whole car door lock device moves towards the door opening direction to the lock hook 10 to hook the switch fixing plate 9 fixed on the door machine. Because in the non-region of unblanking, left door tool arm 1 and right door tool arm 17 can't contact layer door ball, so left door tool arm 1 and right door tool arm 17 do not move, start the round pin axle and do not move, and latch hook 10 does not lift, and the door link plate continues to move to the direction of opening the door and catches on the hook plate of fixing on the door machine to the hook, and the interval of opening the door is less than 50mm, satisfies the national standard requirement.

When the car is in the non-unlocking area and the car takes off the door (rescue): the landing door is unlocked by the triangular key firstly, the landing door moves to the door opening direction until the landing door is completely opened, at the moment, the rescue rope is pulled downwards manually, the rescue rope moves downwards to drive the emergency unlocking plate 4 to swing downwards, the upper end of the emergency unlocking plate 4 presses the lower end position of the rotation center of the lock hook 10, the lock hook 10 rotates clockwise, the car door is unlocked, and then the car door is opened manually. After the rescue rope is released, the lock hook tension spring 5 releases pressure (potential energy) to enable the emergency unlocking sheet 4 to swing upwards, and meanwhile, the lock hook 10 automatically resets under the action of self weight and the lock hook tension spring 5 to keep a locking state.

Compared with the prior art, the elevator car door lock provided by the embodiment has the advantages that the structure is simple, the installation and debugging are convenient, the safety performance is high, the unlocking region can be opened from the inside and the outside of the car under any condition, the non-unlocking region cannot be opened from the inside and the outside of the car, and the reliability of the car door lock can be improved.

Those skilled in the art will appreciate that the drawings are merely schematic representations of preferred embodiments and that the blocks or flowchart illustrations are not necessary to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The sequence numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenario.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an elevator sedan-chair lock which characterized in that:

the door knife assembly, the starting block and the lock hook assembly are movably arranged on the door knife base plate, and the unlocking shifting piece is respectively connected with the door knife assembly and the starting block; the verification switch comprises a switch contact and a switch socket, the switch contact is arranged on the latch hook assembly, and the switch socket is arranged on an external base positioned below the latch hook assembly;

the starting block is used for driving the door knife arm component to be folded inwards when the lock hook component is unlocked, so that the door knife arm component drives the unlocking shifting piece to press the lock hook component, and the lock hook component is lifted upwards and drives the switch contact to be separated from the switch socket, and unlocking is realized;

the starting block is also used for driving the door knife arm component to be outwards opened and driving the unlocking shifting piece to rotate when the locking hook component is locked, so that the unlocking shifting piece is reset and the pressure on the locking hook component is relieved, the locking hook component moves downwards through self weight and drives the switch contact to contact the switch socket, and locking is realized.

2. The elevator car door lock of claim 1, wherein:

a first arc-shaped groove is formed in the door knife bottom plate, a starting block pin shaft is arranged on the starting block, and the starting block pin shaft penetrates through the first arc-shaped groove and is connected with the door knife arm component;

the bottom of the unlocking shifting piece is provided with a first U-shaped notch which is used for being clamped with the starting block pin shaft, and the starting block pin shaft is used for driving the unlocking shifting piece to rotate through the door knife arm component.

3. The elevator car door lock of claim 1, wherein:

the bottom of the unlocking shifting piece is provided with an arc surface, and the circle center of the arc surface is consistent with the rotation center of the starting block;

the arc surface is used for enabling the unlocking shifting piece to press the lock hook assembly through deviation when the unlocking shifting piece deviates from the rotation center of the starting block.

4. The elevator car door lock of claim 3, wherein:

the lock hook assembly comprises a lock hook, a lock hook pin shaft and a lock hook bearing, the lock hook is rotatably arranged on the door vane bottom plate, one end of the lock hook pin shaft is connected with the lock hook, and the lock hook bearing is arranged at the other end of the lock hook pin shaft;

the unlocking shifting piece is used for driving the arc surface to press the lock hook bearing on the lock hook pin shaft through the door knife arm component, so that the lock hook is lifted upwards.

5. The elevator car door lock of claim 4, wherein:

the lock hook assembly further comprises a lock hook limiting shaft, and a second arc-shaped groove is formed in the door vane bottom plate;

the lock hook limiting shaft is connected with the lock hook and is movably arranged in the second arc-shaped groove.

6. The elevator car door lock of claim 2, wherein:

the starting block pin shaft is provided with a flexible part, and the starting block is also provided with a third arc-shaped groove;

the starting block pin shaft penetrates through the third arc-shaped groove, and the flexible piece is used for swinging up and down in the third arc-shaped groove.

7. The elevator car door lock of claim 1, wherein:

the door knife further comprises a ball striking swing block assembly, the ball striking swing block assembly comprises a swing block, a first ball striking block, a limiting block and a swing block torsion spring, and the swing block is rotatably arranged on the door knife bottom plate;

the limiting block is arranged on the swing block, a slot is formed in the upper end of the door knife bottom plate, and the starting block is matched with the slot and used for limiting the swing block; the top of the starting block is provided with a clamping groove, and the lower end of the swinging block is used for being clamped and matched with the clamping groove so as to relatively fix the swinging block and the starting block;

the first collision ball is arranged at the upper end of the swinging block and used for touching a collision bow on the bottom plate of the door knife so as to enable the swinging block to rotate anticlockwise and enable the limiting block to be separated from the clamping groove; the swing block torsion spring is hooked with the swing block and used for releasing potential energy to enable the limiting block to be clamped with the clamping groove, and the swing block torsion spring is further used for accumulating the potential energy to enable the limiting block to be separated from the clamping groove.

8. The elevator car door lock of claim 1, wherein:

the spring compression bar assembly comprises a compression bar and a spring;

a fixed shaft is arranged on the starting block, and one end of the pressure lever is connected with the fixed shaft;

the side of the door knife bottom plate is provided with a through hole, the other end of the pressing rod is slidably arranged on the spring and the through hole in a penetrating mode, and the spring is used for enabling the pressing rod to rotate around the fixed shaft to reset.

9. The elevator car door lock of claim 8, wherein:

one end of the pressing rod is provided with a second U-shaped notch, and one end of the pressing rod is connected with the fixed shaft through the second U-shaped notch.

10. The elevator car door lock of claim 1, wherein:

the door knife further comprises a second ball and a third ball, wherein the second ball and the third ball are both arranged on the bottom plate of the door knife;

the second colliding ball is used for limiting the starting block rotating along the first direction, the third colliding ball is used for limiting the starting block rotating along the second direction, and the first direction is opposite to the second direction.

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