CN118922370A - Elevator with a motor - Google Patents

Abstract

The locking mechanism includes a locking side hook member, a fixed hook member, a detection switch, a hook side protection part, and a switch side protection part. The locking side hook member is rotatably supported on the door. The fixed hook member and the locking side hook member are releasably engaged. The detection switch detects the opening and closing of the door. The hook side protection part is provided on the locking side hook member. The switch side protection part overlaps with the hook side protection part in the upper and lower directions in the locked state, and the rotation of the locking side hook member is restricted by the contact of the hook side protection part.

Description

elevator

Technical Field

The present invention relates to an elevator provided with a locking mechanism for unlocking and locking a door to the ground.

Background Art

Conventionally, the lobby door disposed on the lobby side of the elevator is provided with a lobby side locking mechanism for locking and unlocking the opening and closing action in order to prevent passengers from falling into the elevator shaft. In addition, in recent years, elevators have been proposed in which the elevator car side is also provided with an elevator car side locking mechanism for locking and unlocking the opening and closing action of the elevator car side door of the elevator car.

As a technology related to such a locking mechanism, there is a technology such as that described in Patent Document 1. Patent Document 1 describes an elevator, which includes a base plate, a locking side hook member, a fixed hook member, an elevator car side engaging member, and a forced unlocking mechanism capable of operating the elevator car side engaging member. The base plate has a sling support surface extending to the lower end of the elevator car side door. In addition, the forced unlocking mechanism has an unlocking sling and a guide member supporting the unlocking sling. One end of the unlocking sling is arranged at the lower end of the elevator car side door, and the other end is connected to the elevator car side engaging member.

In addition, the locking mechanism is provided with a detection switch for detecting the unlocked state of the door. The detection switch has a fixed side contact point, and the movable side contact point provided on the locking side hook member is connected or separated with respect to the fixed side contact point, thereby detecting the locked state or unlocked state of the locking mechanism.

Prior art literature

Patent Literature

Patent Document 1: Japanese Patent Application Publication No. 2019-99315

Summary of the invention

Problems to be solved by the invention

In addition, when the operation of the elevator stops due to a power outage, an earthquake, etc., the locking mechanism is unlocked by rotating the locking side hook member by the operator. At this time, in order to release the connection between the movable side contact and the fixed side contact, it is necessary to rotate the locking side hook member after moving the door in the opening direction by a predetermined distance. However, in the technology described in Patent Document 1, the locking side hook member can be rotated in a state where the movable side contact and the fixed side contact are connected. Therefore, in the technology described in Patent Document 1, it is possible to detect switch breakage due to the rotation of the locking side hook member in a state where the movable side contact and the fixed side contact are connected.

This object is to provide an elevator which can prevent the detection switch from being damaged and can safely unlock the locking mechanism in consideration of the above-mentioned problems.

Solutions to Solve Problems

In order to solve the above problems and achieve this purpose, the elevator has: a door, which is set at the opening of the elevator car that moves up and down in the lifting passage of the building structure or the entrance and exit of the elevator lobby where the elevator car in the building structure stops; and a locking mechanism, which can unlock and lock the door.

The locking mechanism includes a locking side hook member, a fixed hook member, a detection switch, a hook side protection part, and a switch side protection part. The locking side hook member is rotatably supported on the door. The fixed hook member is releasably engaged with the locking side hook member. The detection switch detects the opening and closing of the door. The hook side protection part is provided on the locking side hook member. The switch side protection part overlaps with the hook side protection part in the upper and lower directions in the locked state, and the rotation of the locking side hook member is restricted by the contact of the hook side protection part.

Effects of the Invention

According to the elevator of the above structure, it is possible to prevent the detection switch from being damaged and to unlock the locking mechanism safely.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic configuration diagram showing an elevator according to an embodiment.

FIG. 2 is a side view showing a state in which the elevator car of the elevator according to the embodiment stops at an arbitrary floor.

Fig. 3 is a front view of the entrance and exit of the elevator according to the embodiment as viewed from the elevator car side.

FIG. 4 is a front view showing an elevator car side door provided in the elevator car of the elevator according to the embodiment.

FIG. 5 is a front view showing the elevator car-side locking mechanism (locking mechanism) of the elevator according to the embodiment.

6 is an enlarged view showing the periphery of a detection switch of the elevator car-side locking mechanism of the elevator according to the embodiment.

FIG. 7 is an explanatory diagram showing a normal unlocking operation of the elevator car-side locking mechanism of the elevator according to the embodiment.

8 is an explanatory diagram showing an unlocking operation at the time of rescue of the elevator car-side locking mechanism of the elevator according to the embodiment.

DETAILED DESCRIPTION

Hereinafter, an elevator according to an embodiment will be described with reference to Fig. 1 to Fig. 8. It should be noted that the same reference numerals are given to common components in each figure.

1. The structure of the elevator

First, the structure of an elevator according to an embodiment example (hereinafter referred to as “this example”) will be described with reference to FIGS. 1 to 6 .

Fig. 1 is a schematic structural diagram showing a structural example of an elevator according to this example, and Fig. 2 is a side view showing a state in which an elevator car stops at an arbitrary floor.

As shown in Fig. 1, the elevator 1 of this example is a so-called machine room-less elevator that does not have a machine room above a hoistway 100 formed in a building structure. It should be noted that, in the elevator 1 of this example, an example of using a machine room-less elevator is described, but it is not limited to this, and an elevator having a machine room above the hoistway 100 may also be used.

The elevator 1 includes an elevator car 110 that is raised and lowered in an elevator shaft 100 , a hoist 120 , a counterweight 130 , a first driven pulley 140 , a second driven pulley 150 , and a rope 170 .

A push-up pulley 111 is provided at the lower portion of the elevator car 110. A sling 170 is provided at the push-up pulley 111. It should be noted that a detailed description of the elevator car 110 will be described later.

A counterweight side pulley 131 is provided above the counterweight 130. A suspension rope 170 is wound around the counterweight side pulley 131. The hoist 120 is disposed at the lowest part of the elevator passage 100, and lifts the elevator car 110 and the counterweight 130 in a bucket-like manner via the suspension rope 170. The hoist 120 is driven by a control unit.

The first driven pulley 140 and the second driven pulley 150 are fixed to the uppermost portion of the elevator passage 100. One end and the other end of the sling 170 are fixed to the uppermost portion of the elevator passage 100. The sling 170 is mounted on the first driven pulley 140 from the counterweight side pulley 131 provided on the counterweight 130, and is wound around the hoist 120, the second driven pulley 150, and the lifting pulley 111 of the elevator car 110 in sequence.

The hoisting machine 120 is driven so that the elevator car 110 and the counterweight 130 move up and down in the elevator shaft 100. Hereinafter, the direction in which the elevator car 110 and the counterweight 130 move up and down is referred to as the up-and-down direction.

2, an entrance 102 for people and objects to enter and exit the elevator car 110 is provided in the elevator lobby 101 where the elevator car 110 stops on each floor of the building structure. A pair of elevator lobby side doors 211 (211A, 211B) are provided in the entrance 102 so as to be openable and closable.

The hall door 211 is supported to be openable and closable by a hall door unit 212 provided at an upper end portion of the entrance 102 in the vertical direction and a hall door sill 213 provided at a lower end portion of the entrance 102 in the vertical direction.

[Lobby side door unit and lobby side door]

Next, the structure of the hall side door unit 212 will be described with reference to FIG. 3 .

FIG. 3 is a front view of the entrance 102 as viewed from the elevator car 110 side.

As shown in FIG3 , the hall side door unit 212 includes a hall side door track 215, a first pulley 216, a second pulley 218, a transmission belt 217, door hangers 221, 221, and a hall side locking mechanism 230. The door hanger 221 is provided at the upper end portion of the hall side door 211 in the up-down direction. A moving roller 224 is rotatably mounted on the door hanger 221. The moving roller 224 is slidably engaged with the hall side door track 215. The hall side door track 215 extends along the opening and closing direction of the pair of hall side doors 211, 211.

In addition, connecting members 222 and 223 are respectively provided on the two door hangers 221. The connecting members 222 and 223 are connected to the transmission belt 217 described later. In addition, the door hanger 221 of the two door hangers 221 and 211 that faces the first door hanger 21A of the elevator car 110 is provided with a lobby side locking mechanism 230. The lobby side locking mechanism 230 will be described later.

The first pulley 216 is arranged on one side of the elevator hall side door unit 212 in the horizontal direction, and the second pulley 218 is arranged on the other side of the elevator hall side door unit 212 in the horizontal direction. A transmission belt 217 is wound around the first pulley 216 and the second pulley 218. The transmission belt 217 is formed into a ring shape with both ends in the length direction connected. In addition, the upper and lower parts of the transmission belt 217 in the vertical direction move in opposite directions to each other.

A first connecting member 222 is connected to the lower portion of the conveyor belt 217 as the return path side, and a second connecting member 223 is connected to the upper portion of the conveyor belt 217 as the outward path side. When the conveyor belt 217 moves, the pair of elevator hall side doors 211, 211 move toward the closing direction of approaching each other or the opening direction of separating from each other via the connecting members 222, 223.

The elevator hall side locking mechanism 230 has a locking side hook member 231, a rotating shaft 232, two elevator hall side engaging members 235, 235 and a fixed hook member 234. The rotating shaft 232 is provided on one of the two door hangers 221. The locking side hook member 231 is rotatably provided on the rotating shaft 232. The locking side hook member 231 and the fixed hook member 234 are engaged in an unlockable manner. In addition, the elevator hall side engaging members 235, 235 are arranged on the locking side hook member 231. The two elevator hall side engaging members 235, 235 are arranged to face each other in the opening and closing direction of a pair of elevator hall doors 211A. In addition, when the elevator car 110 stops at an arbitrary floor, the elevator hall side engaging member 235 faces the elevator car side engaging member 32 in the elevator car side locking mechanism 30 described later at a predetermined interval.

The fixing hook member 234 is fixed to a door hanger 221 or the hall-side door 211 which is different from the door hanger 221 on which the rotation shaft 232 and the locking-side hook member 231 are provided.

In addition, a locking holding member (not shown) is arranged near the hall-side engaging member 235 of the locking-side hook member 231. The locking holding member applies force to the locking-side hook member 231 in the locking direction, that is, downward in the vertical direction. Thus, the locking state of the locking-side hook member 231 in the hall-side locking mechanism 230 is maintained.

The force of the lock holding member in the elevator lobby side locking mechanism 230 to maintain the locked state is set to be greater than the force of the lock holding member in the elevator car side locking mechanism 30 to maintain the locked state. That is, the force of the lock holding member in the elevator car side locking mechanism 30 is set to be smaller than the force of the lock holding member in the elevator lobby side locking mechanism 230.

[Elevator car]

Next, the structure of the elevator car 110 will be described.

As shown in Fig. 1, the elevator car 110 includes an elevator car room 10 for people and objects to get on and off, a pair of elevator car side doors 11A and 11B, an elevator car side door unit 12, and an elevator car side door sill 13. An opening is provided on one side of the elevator car room 10. People and objects enter and exit through the opening.

The elevator car side door unit 12 is provided at the upper end portion in the vertical direction of the opening portion of the elevator car chamber 10, and the elevator car side door sill 13 is provided at the lower end portion in the vertical direction of the opening portion of the elevator car chamber 10. Furthermore, the pair of elevator car side doors 11A and 11B are supported by the elevator car side door unit 12 and the elevator car side door sill 13 so as to be openable and closable in a horizontal direction orthogonal to the vertical direction.

FIG. 4 is a front view of the elevator car side door 11A as viewed from the elevator lobby side.

As shown in Fig. 1 and Fig. 4, the elevator car side door unit 12 is provided with an elevator car side door rail 15, a driving unit 16, a transmission belt 17 and a driven roller 18. The elevator car side door rail 15 is parallel to the horizontal direction and extends along the opening and closing direction of the pair of elevator car side doors 11A, 11B.

The driving unit 16 is disposed at one horizontal end of the elevator car side door unit 12, and the driven roller 18 is disposed at the other horizontal end of the elevator car side door unit 12. A transmission belt 17 is wound around the driving shaft of the driving unit 16 and the driven roller 18.

The conveyor belt 17 is formed into a ring shape with both ends in the longitudinal direction connected. When the driving unit 16 is driven, the conveyor belt 17 circulates between the driven roller 18 and the driving shaft of the driving unit 16. At this time, the upper and lower parts of the conveyor belt 17 in the vertical direction move in opposite directions to each other. The lower part of the conveyor belt 17, which is the return path side, is connected to the first connecting member 22 described later, and the upper part of the conveyor belt 17, which is the outgoing path side, is connected to the second connecting member 23 described later.

A fixing hook member 34 constituting a car locking mechanism 30 described later is fixed to the car door unit 12. The fixing hook member 34 is disposed above the first car door 11A in the vertical direction when the pair of car doors 11A and 11B are closed.

Next, the pair of elevator car side doors 11A, 11B will be described.

The pair of elevator car side doors 11A and 11B are each formed in a rectangular shape. A first door hanger 21A is provided at the upper end of the first elevator car side door 11A in the vertical direction, and a second door hanger 21B is provided at the lower end of the second elevator car side door 11B in the vertical direction. In addition, a slider 14 is provided at the lower end of the pair of elevator car side doors 11A and 11B in the vertical direction. The slider 14 is slidably engaged with a guide groove provided in the elevator car side door sill 13.

The first door hanger 21A and the second door hanger 21B are each rotatably provided with a moving roller 24. The moving roller 24 is slidably engaged with the elevator car side door rail 15.

The first door hanger 21A has a first connecting member 22, and the second door hanger 21B has a second connecting member 23. The first connecting member 22 protrudes upward from the upper end of the first door hanger 21A in the vertical direction. The second connecting member 23 protrudes upward from the upper end of the second door hanger 21B in the vertical direction. The first connecting member 22 is connected to the lower part of the conveyor belt 17, and the second connecting member 23 is connected to the upper part of the conveyor belt 17.

Therefore, when the driving unit 16 is driven and the transmission belt 17 moves, the pair of elevator car side doors 11A and 11B move toward each other through the first coupling member 22 and the second coupling member 23 in the door opening direction or away from each other in the door closing direction.

The first car door 11A is provided with a safety shoe 25 and a car locking mechanism 30. The safety shoe 25 is provided at the end of the first car door 11A on the door closing direction side, the so-called door stop side end 11a close to the second car door 11B.

The safety shoe 25 is formed of a long strip member extending in the vertical direction with a length substantially the same as the length of the first elevator car side door 11A in the vertical direction. The safety shoe is supported on the door stop side end 11a of the first elevator car side door 11A via a pair of link members so as to be movable in the vertical direction and in the opening and closing direction. In addition, a detection unit (not shown) for detecting the movement of the safety shoe 25 is provided near the door stop side end 11a of the first elevator car side door 11A and the link member supporting the safety shoe 25. The detection unit detects the application of a load to the safety shoe 25 by detecting the movement of the safety shoe 25.

[Elevator car side locking mechanism]

Next, the elevator car side locking mechanism 30 will be described with reference to FIG. 5 .

FIG. 5 is a front view showing the elevator car-side locking mechanism 30 .

As shown in Fig. 5, the elevator car side locking mechanism 30 showing an example of the locking mechanism includes a base plate 31, an elevator car side engaging member 32, a locking side hook member 33, a fixing hook member 34, a rotating shaft 35, a locking holding member (not shown), and a first link member 41A and a second link member 41B. In addition, the elevator car side locking mechanism 30 includes a detection switch 81.

The fixing hook member 34 is fixed to the elevator car side door unit 12. It should be noted that the fixing hook member 34 may also be fixed to the second door hanger 21B or the elevator car side door 11B. The fixing hook member 34 is provided with a hook portion 34a. The hook portion 34a engages with a hook portion 33a of the locking side hook member 33 described later.

The base plate 31 is formed in a substantially flat plate shape and is fixed to the first door hanger 21A. The rotation shaft 35 , the first stopper 45 , the plurality of second stoppers 46 , and the link shafts 42 , 42 of the link members 41A, 41B are fixed to the base plate 31 .

The first link member 41A is rotatably supported by a link shaft 42 provided at a lower end portion in the vertical direction of the base plate 31. The second link member 41B is rotatably supported by a link shaft 42 provided at an upper end portion in the vertical direction of the base plate 31. A shaft portion 43 is provided at the end portion of each of the first link member 41A and the second link member 41B on the opposite side to the link shaft 42.

The elevator car side engaging member 32 is rotatably mounted on the two shaft portions 43, 43. The elevator car side engaging member 32 is formed by a long strip-shaped member extending at a predetermined length along the lifting direction of the elevator car 110. In addition, when the elevator car side locking mechanism 30 is in a locked state, the first link member 41A and the second link member 41B are oriented upward in the vertical direction in such a manner that the ends of the shaft portions 43, 43 connected to the elevator car side engaging member 32 are higher in the horizontal direction than the ends of the connecting rod shafts 42, 42. Therefore, when the elevator car side locking mechanism 30 is in a locked state, the elevator car side engaging member 32 is configured in a state of being lifted upward in the vertical direction by the first link member 41A and the second link member 41B.

In addition, when the elevator car 110 stops at an arbitrary floor and before the lock of the elevator car side locking mechanism 30 is released, the elevator hall side engaging member 235 of the elevator hall side locking mechanism 230 described later is arranged on the door opening direction side of the elevator car side door 11A of the elevator car side engaging member 32. At this time, the elevator car side engaging member 32 and the elevator hall side engaging member 235 are opposite to each other with a predetermined interval T therebetween.

The first stopper 45 is arranged near the first link member 41A provided at the lower end in the up-down direction. When the elevator car side locking mechanism 30 is in the locked state, the first stopper 45 abuts against the door opening direction side of the elevator car side door 11A in the first link member 41A. Therefore, the first link member 41A and the second link member 41B are restricted from rotating in the counterclockwise direction in FIG. 5 .

The plurality of second stoppers 46 are opposed to the end of the elevator car side engaging member 32 on the door closing direction side of the elevator car side door 11A at a predetermined interval M. The interval M becomes the movable range of the elevator car side engaging member 32 in the horizontal direction. Furthermore, when the first link member 41A and the second link member 41B rotate and the elevator car side engaging member 32 moves to the lower side in the vertical direction and to the door closing direction side of the elevator car side door 11A, the elevator car side engaging member 32 abuts against the second stoppers 46, thereby limiting the movement of the elevator car side engaging member 32 and the first link member 41A and the second link member 41B.

A transmission portion 36 is provided in the middle of the length direction of the first elevator car side engagement member 32. The transmission portion 36 is provided at the end portion on the door frame side of the first elevator car side engagement member 32. The transmission portion 36 contacts a transmission pin 37 described later.

The rotation shaft 35 is disposed on the door opening direction side of the car door 11A from the car-side engaging member 32 mounted to the base plate 31 via the first link member 41A and the second link member 41B. The locking-side hook member 33 is rotatably supported on the rotation shaft 35 .

The locking hook member 33 has a hook portion 33a, a rotation receiving portion 33b, a connecting portion 33c and an unlocking receiving portion 33d. The rotation receiving portion 33b is rotatably supported by the rotation shaft 35. A transmission pin 37 is arranged at a position below the rotation shaft 35 in the vertical direction and on the door stop side of the rotation receiving portion 33b.

The transmission pin 37 contacts the transmission part 36 provided on the elevator car side engaging member 32. When the first elevator car side engaging member 32 moves to the lower side and the door stop side in the vertical direction via the pair of link members 41A and 41B, the movement of the elevator car side engaging member 32 is transmitted to the transmission pin 37 via the transmission part 36. As a result, the locking side hook member 33 rotates counterclockwise (unlocking direction) in FIG. 5 around the rotation shaft 35.

A connecting portion 33c is provided at the end of the rotation receiving portion 33b on the door stop side. The connecting portion 33c protrudes from the rotation receiving portion 33b toward the door stop side. In addition, a hook portion 33a is formed at the end of the connecting portion 33c on the side opposite to the rotation receiving portion 33b. The hook portion 33a protrudes toward the door stop side more than the elevator car side engaging member 32. In addition, when the elevator car side locking mechanism 30 is in a locked state, the hook portion 33a is arranged above the fixed hook member 34 in the up-down direction, and engages with the hook portion 34a of the fixed hook member 34 at a predetermined interval S.

Here, the interval S between the hook 33a and the hook 34a is set to be at least greater than the sum of the interval M between the second stopper 46 and the elevator car side engaging member 32 and the interval T between the elevator car side engaging member 32 and the elevator lobby side engaging member 235.

Here, the rotation shaft 35 is provided on the door opening direction side of the elevator car side door 11A of the elevator car side engaging member 32, and the hook portion 33a is made to protrude from the door closing direction side of the elevator car side engaging member 32 on the opposite side to the rotation shaft 35. That is, the elevator car side engaging member 32 is arranged between the rotation shaft 35 and the hook portion 33a of the locking side hook member 33. Thus, the rotation radius of the locking side hook member 33 can be made longer than the case where the rotation shaft 35 is provided on the door closing direction side of the elevator car side door 11A of the elevator car side engaging member 32. Thus, the hook portion 33a can be moved upward in the vertical direction to a large extent with a small rotation amount, and the movement amount of the elevator car side engaging member 32 can be reduced.

In addition, a locking holding member (not shown) is arranged at the upper end portion of the connecting portion 33c of the locking side hook member 33 in the vertical direction, and the locking holding member is arranged at a position closer to the door stop than the elevator car side engaging member 32. And the locking holding member applies force to the locking side hook member 33 downward in the vertical direction, that is, in the locking direction, via the connecting portion 33c.

As the lock holding member, a compression coil spring, a leaf spring, rubber or other various elastic members are used.

Next, the detailed structure of the detection switch 81 will be described.

FIG. 6 is an enlarged view showing the periphery of the detection switch 81 .

As shown in Fig. 5, regarding the detection switch 81, the fixing hook member 34 is fixed to the elevator car side door unit 12. It should be noted that the fixing hook member 34 may also be fixed to the second door hanger 21B or the elevator car side door 11B. That is, the elevator car side door 11B disposed on the side opposite to the elevator car side door 11A is a non-movable member.

As shown in Fig. 6, the detection switch 81 has a fixed side contact 82 and a movable side contact 72. The fixed side contact 82 is provided at the end of the detection switch 81 on the door opening direction side, that is, the end on the side opposite to the elevator car side door 11A. In this example, two fixed side contacts 82 are provided in the detection switch 81, but the number of fixed side contacts 82 is not limited to two.

The fixed side contact 82 is a hole that is recessed from the end of the detection switch 81 on the door opening direction side toward the opening and closing direction. Therefore, the end face on the door opening direction side of the fixed side contact 82 is open. In addition, the electrode of the detection switch 81 is arranged on the end face on the door closing direction side of the fixed side contact 82, that is, the bottom face of the hole. In this way, by arranging the electrode of the detection switch 81 at a position deep in the hole, it is possible to prevent the operator from contacting the electrode and getting an electric shock. In addition, the opening of the fixed side contact 82 is oriented toward the opening and closing direction orthogonal to the up and down direction, so that garbage, dust, etc. can be suppressed from entering the fixed side contact 82. The movable side contact 72 is inserted into the fixed side contact 82.

In addition, a switch side guard 77 is provided at the lower end of the detection switch 81 in the vertical direction. The switch side guard 77 protrudes downward in the vertical direction from the lower end of the detection switch 81. The front end of the switch side guard 77, that is, the lower end in the vertical direction, is arranged at a position lower in the vertical direction than the connecting portion 33c of the locking side hook member 33 in the locked state. In addition, the lower end of the switch side guard 77 protrudes in the door opening direction. The switch side guard 77 abuts against the hook side guard 76 described later.

A fixing bracket 75 is fixed to the locking hook member 33. The fixing bracket 75 is provided at the connection portion 33c of the locking hook member 33. The fixing bracket 75 is disposed on the door closing direction side relative to the rotation shaft 35. The contact point support portion 71 and the hook side protection portion 76 are fixed to the fixing bracket 75.

The contact support portion 71 is disposed at the end portion on the door closing direction side of the fixing bracket 75. In addition, the contact support portion 71 is disposed above the locking side hook member 33 in the vertical direction. In the locked state, the contact support portion 71 faces the end surface on the door opening direction side of the detection switch 81. The contact support portion 71 is provided with two movable side contacts 72 of the detection switch 81.

The movable side contact 72 protrudes from a surface of the contact support portion 71 that is opposite to the detection switch 81 toward the door closing direction, that is, toward the detection switch 81 body. In addition, the movable side contact 72 is inserted into the fixed side contact 82 in a pluggable manner. By inserting the movable side contact 72 into the fixed side contact 82, the detection switch 81 detects that the elevator car side locking mechanism 30 is in the locked state. In addition, when the movable side contact 72 is pulled out from the fixed side contact 82, the detection switch 81 detects that the elevator car side locking mechanism 30 is in the unlocked state.

It should be noted that, in this example, an example in which two movable-side contacts 72 are provided is described, but the present invention is not limited thereto, and the number of movable-side contacts 72 may correspond to the number of fixed-side contacts 82 .

The lower end of the fixing bracket 75 in the vertical direction is arranged at a position lower in the vertical direction than the connecting portion 33c of the locking side hook member 33, and a hook side guard portion 76 is provided at the lower end of the fixing bracket 75. The hook side guard portion 76 is formed in a substantially flat plate shape. And the hook side guard portion 76 protrudes from the lower end of the fixing bracket 75 toward the door closing direction. In addition, in the locked state, the hook side guard portion 76 is arranged below the switch side guard portion 77 in the vertical direction at a predetermined interval L4. Therefore, in the locked state, the hook side guard portion 76 and the switch side guard portion 77 at least partially overlap when viewed from the vertical direction.

The amount of overlap between the hook-side guard 76 and the switch-side guard 77 in the vertical direction is set to be longer than the insertion depth of the movable-side contact 72 into the fixed-side contact 82. In addition, the amount of overlap between the hook-side guard 76 and the switch-side guard 77 is set to be shorter than the interval S (see FIG. 5 ) between the hook portion 33 a of the locking-side hook member 33 and the hook portion 34 a of the fixed hook member 34.

Here, when the outer diameter of the movable side contact 72 is L1 and the opening diameter of the fixed side contact 82 is L2, the interval L3 of the gap between the fixed side contact 82 and the movable side contact 72 is L2-L1. In addition, the length from the center of the rotating shaft 35 to the front end of the movable side contact 72 is R, and the length from the center of the rotating shaft 35 to the front end of the hook side guard 76 is r. The angle formed by the line connecting the front end of the hook side guard 76 and the center of the rotating shaft 35 in the locked state and the line connecting the front end of the movable side contact 72 and the center of the rotating shaft 35 is β. And the angle from the contact between the movable side contact 72 and the fixed side contact 82 in the locked state to the contact between the hook side guard 76 and the switch side guard 77 is α.

In this case, the detection switch 81 is arranged at a position that satisfies the following Expression 1.

[Formula 1]

L3(-Rsinβ＋Rsin(α+β))≤L4(rsinα)

2. Unlocking action of the locking mechanism on the elevator car side

2-1. Normal time

Next, the unlocking operation of the elevator car side locking mechanism (locking mechanism) 30 having the above-mentioned structure will be described with reference to Fig. 7 and Fig. 8. First, the unlocking operation in a normal state will be described with reference to Fig. 7 .

FIG. 7 is an explanatory diagram showing a normal unlocking operation.

As shown in Fig. 2, when the elevator car 110 stops at any floor, the elevator car side door unit 12 is opposed to the elevator hall side door unit 212, and the elevator car side locking mechanism 30 is opposed to the elevator hall side locking mechanism 230. And, as shown in Fig. 5, the elevator car side engaging member 32 is opposed to the elevator hall side engaging member 235 in the opening and closing direction.

At this time, as shown in Fig. 7 (a), the locking hook member 33 of the elevator car side locking mechanism 30 is engaged with the fixed hook member 34, and the elevator car side locking mechanism 30 is in a locked state. In addition, the hook side guard 76 and the switch side guard 77 overlap in the vertical direction, and the rotation of the locking hook member 33 is restricted.

When the driving unit 16 is driven in this state and the pair of elevator car side doors 11A and 11B move in the door-opening direction away from each other, the elevator car side engaging member 32 abuts against the elevator lobby side engaging member 235. When the first elevator car side door 11A further moves in the door-opening direction, the elevator car side engaging member 32 is pressed by the elevator lobby side engaging member 235 in the direction opposite to the direction in which the first elevator car side door 11A moves. Therefore, the connecting rod members 41A and 41B rotate around the connecting rod shaft 42, respectively. And the elevator car side engaging member 32 moves in the direction opposite to the direction in which the first elevator car side door 11A moves and in the downward direction in the vertical direction.

In addition, as the elevator car side doors 11A and 11B move in the door opening direction, the locking side hook member 33 provided on the elevator car side door 11A also moves in the door opening direction. Therefore, as shown in FIG. 7 (b), the movable side contact 72 provided on the locking side hook member 33 is pulled out from the fixed side contact 82. As a result, the detection switch 81 detects the door opening action of the elevator car side doors 11A and 11B. In addition, as the locking side hook member 33 moves in the door opening direction, the hook side guard 76 also moves in the door opening direction. Therefore, the hook side guard 76 is separated from the switch side guard 77, and the hook side guard 76 and the switch side guard 77 do not overlap in the vertical direction. As a result, the rotation action of the locking side hook member 33 can be performed.

The moving action of the elevator car side engaging member 32 is transmitted to the locking side hook member 33 via the transmission part 36 and the transmission pin 37. Therefore, the locking side hook member 33 overcomes the force of the locking holding member and rotates around the rotation axis 35. And the locking side hook member 33 rotates from the locking position where the hook part 33a is engaged with the fixed hook member 34 to the unlocking position facing upward in the vertical direction. In addition, since the overlap between the hook side protection part 76 and the switch side protection part 77 is eliminated, the engagement between the hook part 33a and the fixed hook member 34 is released as shown in (c) of Figure 7, and the elevator car side locking mechanism 30 is unlocked. It should be noted that the elevator car side engaging member 32 stops its movement by contacting with the second stopper 46. At this time, the movable side contact 72 is pulled out from the fixed side contact 82, so the movable side contact 72 does not interfere with the fixed side contact 82 due to the rotation action of the locking side hook member 33. This can prevent the detection switch 81 from being damaged.

Furthermore, when the first elevator car side door 11A moves in the door opening direction, the elevator hall side engaging member 235 is pressed against the elevator car side engaging member 32. Furthermore, the locking side hook member 231 of the elevator hall side locking mechanism 230 overcomes the acting force and rotates around the rotating shaft 232. Thus, the elevator hall side locking mechanism 230 is unlocked. As a result, the elevator hall side doors 211, 211 move in the door opening direction together with the elevator car side doors 11A, 11B, and the door opening actions of the elevator car side doors 11A, 11B of the elevator car 110 and the elevator hall side doors 211, 211 of the elevator hall 101 are completed.

2-2. Rescue

Next, the unlocking operation of the elevator car side locking mechanism 30 during rescue will be described with reference to FIG. 8 .

FIG. 8 is an explanatory diagram showing an unlocking operation during rescue.

In the case of a power outage, etc., the operator rotates the locking hook member 33 of the elevator car side locking mechanism 30. At this time, when the elevator car side doors 11A and 11B are not moved in the door opening direction by a predetermined amount, as shown in FIG. 8 (a), the hook side guard 76 and the switch side guard 77 overlap in the vertical direction. In addition, the movable side contact 72 is inserted into the fixed side contact 82. In this state, when the locking side hook member 33 is rotated, as shown in FIG. 8 (b), the hook side guard 76 and the switch side guard 77 abut. Therefore, the rotation of the locking side hook member 33 is restricted. As a result, the locking side hook member 33 can be prevented from rotating in the state where the movable side contact 72 is inserted into the fixed side contact 82, so that the detection switch 81 can be prevented from being damaged.

The positional relationship between the detection switch 81 and the hook side guard 76 and the switch side guard 77 is expressed by the above equation 1. Therefore, even if the locking hook member 33 rotates at a small angle α, the inner wall surfaces of the movable side contact 72 and the fixed side contact 82 can be prevented from interfering.

As described above, during rescue, the locking hook member 33 cannot be rotated until the overlap between the hook side guard 76 and the switch side guard 77 is eliminated, so the operator first moves the elevator car side doors 11A, 11B in the door opening direction. Then, after the movable side contact 72 is pulled out from the fixed side contact 82 to eliminate the overlap between the hook side guard 76 and the switch side guard 77, the operator rotates the locking hook member 33. As a result, the hook 33a of the locking hook member 33 is disengaged from the hook 34a of the fixed hook member 34, and the elevator car side locking mechanism 30 is unlocked.

In addition, the timing of the rotation of the locking side hook member 33 can be adjusted by the overlap amount of the hook side guard 76 and the switch side guard 77. Therefore, even if there is a deviation in the interval T between the elevator hall side engaging member 235 provided in the elevator hall side door 211 and the elevator car side engaging member 32, the locking side hook member 33 can be rotated at a predetermined timing by adjusting the positional relationship between the hook side guard 76 and the switch side guard 77. As a result, the adjustment operation of the arrangement of the plurality of elevator hall side engaging members 235 provided for the elevator hall of each building structure can be simplified.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims.

In the above-described embodiment, an example is described in which the opening of the elevator cage is opened and closed by a pair of door portions approaching and separating from each other, but the present invention is not limited thereto, and the opening of the elevator cage may be opened and closed by moving a single door portion.

Furthermore, although the example in which the elevator car side locking mechanism 30 is applied as the locking mechanism has been described, the present invention is not limited thereto and the locking mechanism may also be applied to the elevator hall side locking mechanism 230.

Furthermore, the example in which the switch side guard portion 77 and the hook side guard portion 76 are arranged below the connecting portion 33c of the locking side hook member 33 in the vertical direction in the locked state has been described, but the present invention is not limited thereto. For example, the switch side guard portion 77 and the hook side guard portion 76 may be arranged above the connecting portion 33c in the vertical direction, and the positions of the switch side guard portion 77 and the hook side guard portion 76 are not particularly limited.

It should be noted that, in this specification, words such as "parallel" and "orthogonal" are used, but they do not mean only strictly "parallel" and "orthogonal", but can also mean a state of "approximately parallel" or "approximately orthogonal" that includes "parallel" and "orthogonal" and is within the range where they can perform their functions.

Description of Reference Numerals

1: elevator, 10: elevator car room, 11A, 11B: elevator car side door, 11a: door stop side end, 11b: door frame side end, 11c: middle part, 12: elevator car side door unit, 13: elevator car side door sill, 15: elevator car side door track, 16: driving part, 17: transmission belt, 18: driven roller, 21A, 21B: door hanger, 25: safety shoe, 30: elevator car side locking mechanism, 31: base plate, 31a: main surface, 31b: sling support surface, 32: elevator car side engaging member, 33: locking side hook member, 33a: hook part, 33b: rotation receiving part, 33d: unlocking receiving part, 34: fixed hook Component, 35: rotating shaft, 36: transmission part, 37: transmission pin, 41A, 41B: connecting rod component, 71: contact supporting part, 72: movable side contact, 75: fixed bracket, 77: switch side protection part, 76: hook side protection part, 81: detection switch, 82: fixed side contact, 100: lifting channel, 101: elevator hall, 102: entrance and exit, 110: elevator car, 120: winch, 130: counterweight, 170: suspension rope, 211: elevator hall side door, 212: elevator hall side door unit, 213: elevator hall side door sill, 215: elevator hall side door track, 230: elevator hall side locking mechanism, 235: elevator hall side engaging part.

Claims (5)

1. An elevator, wherein: The elevator has: A door provided at an opening of an elevator car that moves up and down in an elevator passage provided in a building structure or at an entrance and exit of an elevator lobby where the elevator car stops in the building structure; and A locking mechanism that locks the door so it can be unlocked. The locking mechanism comprises: A locking side hook member rotatably supported on the door; a fixed hook member, which is releasably engaged with the locking side hook member; A detection switch, which detects the opening and closing of the door; a hook-side protection portion, which is provided on the locking-side hook member; and The switch-side guard portion overlaps with the hook-side guard portion in the vertical direction in the locked state, and restricts the rotational movement of the locking-side hook member by abutting against the hook-side guard portion. 2. The elevator according to claim 1, wherein: The detection switch has: a fixed side contact point provided on a member different from the member on which the locking side hook member is provided; and A movable side contact point is provided on the locking side hook member, When the fixed-side contact is separated from the movable-side contact, the overlap between the hook-side guard portion and the switch-side guard portion in the vertical direction is eliminated, so that the locking-side hook member can be rotated. 3. The elevator according to claim 2, wherein: The switch side protection part is fixed to the main body of the detection switch, The movable-side contact and the hook-side guard are fixed to the locking-side hook member via a fixing bracket. 4. The elevator according to claim 2, wherein: The fixed side contact is a hole provided in the main body of the detection switch, and an electrode is arranged on the bottom surface of the hole. The movable-side contact is insertable and removable into the fixed-side contact. 5. The elevator according to claim 4, wherein: The fixed side contact point is a hole recessed along the opening and closing direction of the door. The vertical overlap between the hook-side guard and the switch-side guard in the locked state is set longer than the insertion depth of the movable-side contact into the fixed-side contact and is set shorter than the interval between the locking-side hook member and the fixed hook member in the opening and closing direction.