CN109906196B - Elevator car and elevator - Google Patents

Abstract

The emergency exit device includes a rescue door, a hinge portion, and a locking device, and the locking device includes a frame body, a cam body, a rotating shaft, a detection switch, and an engaging member. The cam body, the rotating shaft and the detection switch are accommodated in the casing. The cam body includes: a first cam piece that engages with the engaging member; and a second cam piece that presses the switching movable portion of the detection switch when the cam body rotates.

Description

Elevator Cars and Elevators

technical field

The present invention relates to an elevator car provided with an emergency exit device and an elevator provided with the elevator car.

Background technique

The elevator car of the elevator is provided with an emergency exit device for rescuing passengers in the elevator car in an emergency. The emergency exit device is arranged on the ceiling of the elevator car. In addition, the emergency rescue door device is provided with a switch, and when the rescue door is locked and unlocked, the switch is used to stop the raising/lowering operation of the elevator car for safety.

As a conventional emergency exit device, there is the emergency exit device described in Patent Document 1, for example. Patent Document 1 describes an emergency exit device including: a contact switch provided on a top cover plate; an eccentric cam rotatably provided on the rescue exit cover; and one end fixed to an offset cam The core cam and the other end are locked to the locking lever of the hook provided on the top cover plate when the rescue outlet cover is closed. In addition, the technique described in Patent Document 1 includes: a lever which is reciprocally provided on the rescue outlet cover, one side is urged to press the eccentric cam, and the other side is in contact with the contact switch; The core cam integrally rotates the shaft.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Application Laid-Open No. 9-278303

SUMMARY OF THE INVENTION

The problem to be solved by the invention

However, in the technique described in Patent Document 1, a contact switch representing a detection switch is provided on a roof panel representing a ceiling panel, and a lock lever for switching on and off of the contact switch is provided on a Cover the rescue opening. In this way, since the contact switch and the lock lever are respectively arranged in different members, this not only affects the arrangement of surrounding structures, but also leads to an increase in the size of the emergency exit device.

An object of the present invention is to provide an elevator car and an elevator capable of realizing the miniaturization of an emergency exit device in consideration of the above-mentioned problems.

solutions to problems

In order to solve the above-mentioned problems and achieve the object of the present invention, an elevator car of the present invention includes: a hollow car room; Save the exit. The emergency exit device includes a rescue door, a hinge portion, and a locking device. The rescue door covers the emergency rescue exit. The hinge part supports the rescue door so as to be rotatable with respect to the ceiling. The locking device locks the rescue door in a lockable manner. The locking device includes a frame body, a cam body, a rotating shaft, a detection switch, and an engaging member. The frame is arranged at the rescue door. The cam body is accommodated in the frame body. The rotating shaft is accommodated in the housing, and rotatably supports the cam body. The detection switch is accommodated in the frame body, and detects the locked state and the unlocked state of the locking device. The engaging member is arranged on the ceiling, and is engaged with the cam body. Further, the cam body includes: a first cam piece that engages with the engaging member; and a switchable movable portion provided in the detection switch for switching on and off of the electrical contact when the cam body rotates of the second cam plate.

In addition, the elevator of the present invention includes: an elevator car that moves up and down in a hoistway; a rope connected to the elevator car; a hoisting machine on which the rope is wound; and a control unit that controls the drive of the hoisting machine. As the elevator car, the above-mentioned elevator car is used.

Invention effect

According to the elevator car and the elevator of the present invention, the size of the emergency exit device can be reduced.

Description of drawings

FIG. 1 is a schematic configuration diagram of an elevator showing an example of an embodiment.

Fig. 2 is a perspective view showing an elevator car according to an embodiment.

Fig. 3 is a plan view showing an upper portion of a car room in an elevator car according to the embodiment.

4 is a cross-sectional view showing an emergency exit device installed in an elevator car according to an embodiment.

FIG. 5 is a plan view showing the locking device of the emergency exit device according to the embodiment.

FIG. 6 is an explanatory diagram showing a locking mechanism of the emergency exit device according to the embodiment.

7 is a cross-sectional view showing a locking device of the emergency exit device according to the embodiment.

8 is a plan view showing an unlocked state of the locking device in the emergency exit device according to the embodiment.

FIG. 9 is an explanatory diagram showing the lock mechanism in the state of FIG. 8 .

10 is a plan view showing the locking device in a state in which the rescue door in the emergency exit device of the embodiment is opened.

FIG. 11 is an explanatory diagram showing the lock mechanism in the state of FIG. 10 .

Detailed ways

Hereinafter, embodiments of an elevator car and an elevator according to the present invention will be described with reference to FIGS. 1 to 11 . In addition, in each figure, the same code|symbol is attached|subjected to the common member.

1. The structure of the elevator

First, with reference to FIG. 1, the structure of the elevator of the embodiment example (henceforth "this example") of this invention is demonstrated.

FIG. 1 is a schematic configuration diagram showing a configuration example of the elevator of this example.

As shown in FIG. 1, the elevator 1 of this example is installed in the lift passage 110 formed in the building structure. The elevator 1 includes an elevator car 120 , a sling 130 , a counterweight 140 , a hoisting machine 100 , and a control unit 190 , which perform an ascending and descending motion in the hoistway 110 and mount a person and a cargo. A machine room 160 is provided at the top of the lift tunnel 110 .

The hoisting machine 100 is arranged in the machine room 160 , and the elevator car 120 is moved up and down by winding the sling 130 . In addition, the deflector pulley 150 on which the suspending rope 130 is installed is provided in the vicinity of the hoisting machine 100 .

The elevator car 120 is attached to one end of the suspension rope 130 in the axial direction, and the counterweight 140 is attached to the other end of the suspension rope 130 in the axial direction. Therefore, the elevator car 120 is connected to the counterweight 140 via the slings 130 . Then, when the hoisting machine 100 is driven, the elevator car 120 and the counterweight 140 are moved up and down.

The control part 190 is provided in the machine room 160, for example. And the control part 190 controls the drive of the hoisting machine 100.

[elevator car]

Next, the configuration of the elevator car 120 will be described with reference to FIGS. 2 and 3 .

FIG. 2 is a perspective view showing the elevator car 120 , and FIG. 3 is a plan view showing the elevator car 120 .

As shown in FIG. 2 , the elevator car 120 has a car room 121 and a door unit 122 .

The car room 121 is formed in a hollow substantially rectangular parallelepiped shape. The car room 121 is provided with an entrance and exit 124 whose surface is open. Then, people and goods enter and exit through the doorway 124 in the interior space of the car room 121 . The door 123 of the door unit 122 is provided in the doorway 124 so as to be openable and closable.

In addition, the car room 121 includes a car floor 127 , side plates 126 , and a ceiling 125 . The car floor 127 is formed in a substantially rectangular shape. A side plate 126 is arranged around the car floor 127 . An entrance 124 is formed in one of the side plates 126 surrounding the car floor 127 .

The ceiling 125 is opposed to the car floor 127 in the vertical direction. The ceiling 125 is formed in a substantially rectangular shape similarly to the car floor 127 . As shown in FIG. 3 , the ceiling 125 is composed of a plurality of (three in this example) panels 2A, 2B, and 2C. The panels 2A, 2B, and 2C are formed in a flat plate shape. Further, the plurality of panels 2A, 2B, and 2C are arranged in parallel with each other substantially parallel to the horizontal direction. Moreover, the edge part by the side of the adjacent panels 2A, 2C among the panels 2B is formed with the folded-back part 2a which folded back upwards in the vertical direction together with the adjacent panels 2A, 2C.

In the panel 2B arrange|positioned in the middle among the some panels 2A, 2B, and 2C, the emergency rescue opening 3 opened in a substantially rectangular shape is formed. The emergency exit 3 is formed in the edge part on the side of the panel 2C which adjoins among the panels 2B. An emergency exit device 10 is provided on the panel 2B so as to block the opening of the emergency exit 3 .

In this example, the example in which the emergency exit device 10 is provided on the middle panel 2B has been described, but the present invention is not limited to this, and the emergency exit device 10 may be provided on both side panels 2A and 2C.

[emergency exit device]

Next, the configuration of the emergency exit device 10 will be described with reference to FIGS. 3 to 7 .

FIG. 4 is a cross-sectional view showing the emergency exit device 10 .

As shown in FIG. 3 , the emergency rescue door device 10 includes a rescue door 11 , a hinge portion 12 , and a locking device 13 that locks the rescue door 11 in a lockable manner. The rescue door 11 is formed in a substantially flat shape. In addition, the rescue door 11 is formed in a substantially rectangular shape corresponding to the shape of the opening of the emergency rescue door 3 . As shown in FIG. 4 , the rescue door 11 is attached to the panel 2B so as to be openable and closable via the hinge portion 12 . Moreover, the rescue door 11 covers the emergency rescue exit 3 . Moreover, the locking device 13 is provided in the edge part of the panel 2C side which adjoins the panel 2B of the rescue door 11.

FIG. 5 is a plan view showing the locking device 13 , FIG. 6 is a side view of the locking device 13 viewed from the side of the adjacent panel 2C, and FIG. 7 is a cross-sectional view showing the locking device 13 .

As shown in FIG. 5 , the locking device 13 includes a frame body 20 , a cam body 21 , a rotating shaft 22 , a detection switch 23 , a locking mechanism 24 , an engaging member 25 , a guide pin 26 , and a restricting piece 27 . In addition, the locking device 13 has a grip portion 28 provided on the cam body 21 .

The frame body 20 has a base plate 31 , a cover body 32 , a first side plate 33 and a second side plate 34 . Further, the frame body 20 is formed into a hollow substantially rectangular parallelepiped shape by bending a flat plate-shaped member.

The board|substrate 31 is formed in the substantially flat plate shape of a substantially rectangular shape. The board 31 is placed on the rescue door 11 . The cam body 21 , the rotation shaft 22 , the detection switch 23 , the lock mechanism 24 , the guide pin 26 , and the restriction piece 27 are arranged on the base plate 31 . In addition, the lid body 32 is arranged above the substrate 31 in the vertical direction.

The lid body 32 is provided so as to face the substrate 31 in the up-down direction. The cover body 32 covers the cam body 21 , the rotation shaft 22 , the detection switch 23 , the lock mechanism 24 , the guide pin 26 , and the restriction piece 27 arranged on the base plate 31 . Thereby, the detection switch 23 can be prevented from being stepped on by an operator or dust from adhering to the detection switch 23 . Moreover, the opening part 32a is formed in the cover body 32. As shown in FIG. The cam body 21 and the gripping portion 28 provided on the substrate 31 are faced from the opening of the cover body 32 .

Moreover, the edge part of the 1st side plate 33 on the folded-back part 2a side in the board|substrate 31 is continuous substantially vertically. The end of the second side plate 34 on the opposite side to the first side plate 33 in the base plate 31 is continuous substantially vertically. The first side plate 33 and the second side plate 34 face each other with the base plate 31 therebetween. The first side plate 33 faces the folded-back portion 2a. In addition, as shown in FIGS. 5 and 6 , the lock mechanism 24 is arranged on the first side plate 33 .

Next, the cam body 21 and the rotating shaft 22 will be described.

The rotating shaft 22 is erected substantially vertically from the base plate 31 . In addition, as shown in FIG. 7 , one end portion in the axial direction of the rotating shaft 22 , that is, the lower end portion in the vertical direction penetrates through the base plate 31 and the rescue door 11 and protrudes to the panel 2B. A key groove 22 a is formed at one end of the rotating shaft 22 . Furthermore, the key groove 22a is exposed to the inside of the car room 121 of the elevator car 120 . The rotary shaft 22 can be rotated from the inside of the car room 121 by inserting a tool into the key groove 22a.

A cam body 21 is provided at the other end portion in the axial direction of the rotating shaft 22 , that is, the upper end portion in the vertical direction. The cam body 21 is formed in a substantially circular flat plate shape. The cam body 21 is rotatably supported by the base plate 31 via the rotating shaft 22 . In addition, the cam body 21 faces the base plate 31 via the rotating shaft 22 and rotates substantially parallel to one surface of the base plate 31 .

As shown in FIG. 5 , the cam body 21 has a first cam piece 35 , a second cam piece 36 and a third cam piece 37 . The first cam piece 35 , the second cam piece 36 , and the third cam piece 37 are formed along the circumferential direction of the cam body 21 on the side of the cam body 21 .

The first cam piece 35 protrudes from the side portion of the cam body 21 toward the folded-back portion 2a. In addition, the first cam piece 35 is formed in a substantially fan shape. In the locked state shown in FIGS. 5 and 6 , the first cam piece 35 is disposed below the engaging member 25 described later in the vertical direction. In addition, the corners of the outer edge portions of the first cam pieces 35 are chamfered. Therefore, the outer edge portion of the first cam piece 35 is formed in a tapered shape.

The second cam piece 36 is continuously formed at the end of the first cam piece 35 in the circumferential direction of the cam body 21 . The second cam piece 36 protrudes radially outward from the side portion of the cam body 21 . It should be noted that the protruding length of the second cam piece 36 is set to be shorter than the protruding length of the first cam piece 35 .

In addition, a third cam piece 37 is formed between the first cam piece 35 and the second cam piece 36 in the circumferential direction of the cam body 21 . The third cam piece 37 protrudes radially outward from the side portion of the cam body 21 . In addition, the protruding length of the third cam piece 37 is set longer than the protruding length of the second cam piece 36 and is set shorter than the protruding length of the first cam piece 35 . In the locked state, between the second cam piece 36 and the third cam piece 37 , the roller portion 43 of the detection switch 23 , which will be described later, is arranged.

In addition, a first guide hole 38 and a second guide hole 39 are formed on one surface of the cam body 21 facing the base plate 31 . The first guide hole 38 is formed between the first cam piece 35 and the second cam piece 36 . The second guide hole 39 is formed in the third cam piece 37 . The guide pins 26 are fitted into the first guide holes 38 and the second guide holes 39 .

The guide pins 26 protrude substantially vertically from the base plate 31 . The guide pins 26 are arranged in the vicinity of the rotation shaft 22 in the base plate 31 . In addition, the front end portion of the guide pin 26 faces one surface of the cam body 21 . As shown in FIGS. 5 and 7 , in the locked state, the guide pins 26 are fitted into the first guide holes 38 . In addition, in the unlocked state, the guide pin 26 is fitted into the second guide hole 39 (see FIGS. 8 and 10 ). Further, when the guide pin 26 is fitted into the first guide hole 38 or the second guide hole 39 , a click sound and a click feel are generated.

In addition, a grip portion 28 is provided on the other surface of the cam body 21 on the opposite side to the one surface facing the substrate 31 . The grasping portion 28 is configured to be graspable by the operator. The grip portion 28 faces the opening portion 32 a provided in the lid body 32 . When the operator operates the grip portion 28, the cam body 21 rotates around the rotation shaft 22. As shown in FIG.

As described above, by forming the cam body 21 into a flat plate shape, the size of the cam body 21 in the thickness direction can be reduced. In addition, the grip portion 28 that performs the rotation operation of the cam body 21 is located in the projection surface of the cam body 21, and the cam body 21 can be rotated without using a structure such as a handle or a lever. Thereby, it can prevent that a handle, a lever, etc. protrude from the housing|casing 20 of the locking device 13 and interfere with a structure nearby.

In addition, a toggle spring that holds the cam body 21 at the position of the locked state shown in FIG. 5 may be provided on the rotating shaft 22 and the cam body 21 .

Next, the detection switch 23 will be described.

The detection switch 23 is a switch having a forced separation mechanism. The detection switch 23 has a main body portion 41 , a switching movable portion 42 , and a roller portion 43 . The main body portion 41 is provided with electrical contacts (not shown). In addition, the main body portion 41 detects the locked state and the unlocked state of the locking device 13 when the electrical contacts are switched. The main body portion 41 outputs a detection signal to the control portion 190 (see FIG. 1 ) when the electrical contact is switched on and off. The switching of the electrical contacts of the main body portion 41 between ON and OFF is performed by the switching movable portion 42 .

The switching movable portion 42 is supported by the main body portion 41 so as to be swingable. The switching movable portion 42 swings substantially parallel to the plane of the base plate 31 . The switching movable portion 42 switches on and off of an electric contact (not shown) provided in the main body portion 41 when it swings. In addition, the switching movable portion 42 protrudes from the main body portion 41 toward the side portion of the cam body 21 . In addition, the switching movable part 42 is held in the state shown in FIG. 5 by the urging member which is not shown in figure.

A roller portion 43 is rotatably provided at an end portion of the switching movable portion 42 on the side opposite to the main body portion 41 , that is, an end portion on the side of the cam body 21 . The roller portion 43 is in contact with the side portion of the cam body 21 . It should be noted that, as shown in FIG. 5 , in the locked state, the roller portion 43 abuts on the side portion between the second cam piece 36 and the third cam piece 37 in the cam body 21 . Furthermore, the roller portion 43 is held by the side portion between the second cam piece 36 and the third cam piece 37 . Thereby, the switching movable portion 42 can be prevented from swinging against the operator's will.

In addition, when the cam body 21 is rotated in the unlocking direction (clockwise in this example), the roller portion 43 is pressed by the side portion of the second cam piece 36 in the cam body 21 (see FIGS. 8 and 10 ). Then, the switching movable portion 42 swings to switch the electrical contact of the main body portion 41 between ON and OFF.

In addition, a limiting sheet 27 is arranged in the vicinity of the detection switch 23 . In addition, the restriction piece 27 is arranged between the main body portion 41 of the detection switch 23 and the cam body 21 . The restricting piece 27 protrudes substantially vertically upward from the base plate 31 toward the upper part in the vertical direction. When the cam body 21 is rotated in the unlocking direction, the end portion on the unlocking direction side of the first cam piece 35 comes into contact with the restricting piece 27 (see FIGS. 8 and 10 ). Then, the restricting piece 27 restricts the rotation of the cam body 21 in the unlocking direction.

Next, the lock mechanism 24 will be described.

As shown in FIGS. 5 and 6 , the locking mechanism 24 is provided on the first side plate 33 . The lock mechanism 24 has a lock member 45 , a swing shaft 46 , an urging spring 47 , and a stopper pin 48 . The swing shaft 46 is provided on the first side plate 33 . Moreover, the rocking shaft 46 penetrates the 1st side plate 33, and the one end part protrudes to the one surface of the 1st side plate 33 which opposes the folded-back part 2a. The lock member 45 is swingably supported on one end portion of the swing shaft 46 .

The locking member 45 is formed in a flat plate shape. The locking member 45 has a locking piece 45a, an abutting piece 45b, and a connecting piece 45c. The connection piece 45c is formed in a substantially rectangular shape. A locking piece 45a is provided at one end in the longitudinal direction of the connecting piece 45c, and a contact piece 45b is provided at the other end in the longitudinal direction of the connecting piece 45c.

The locking piece 45a protrudes substantially vertically from one end portion of the connecting piece 45c. The contact piece 45b protrudes substantially perpendicularly from the other end portion of the connecting piece 45c in the direction opposite to the locking piece 45a. In addition, the rocking shaft 46 is attached to the connecting piece 45c. When the lock member 45 is attached to the first side plate 33 via the swing shaft 46 , the lock piece 45 a protrudes upward in the direction of separation from the base plate 31 , that is, upward in the vertical direction. On the other hand, the contact piece 45b protrudes downward in the direction approaching the substrate 31, that is, in the vertical direction. Moreover, in the state which closed the rescue door 11, the contact piece 45b contact|abuts with the panel 2B.

As shown in FIGS. 5 and 7 , between the lock member 45 and the first side plate 33 , an urging spring 47 , which is an example of an urging member, is arranged. The biasing spring 47 is attached to the swing shaft 46 . As the biasing spring 47, for example, a torsion coil spring is used. As shown in FIG. 6 , one end portion 47 a of the biasing spring 47 is attached to the connecting piece 45 c of the locking member 45 . In addition, the other end portion 47 b of the biasing spring 47 is attached to the first side plate 33 .

Furthermore, the urging spring 47 urges the lock member 45 so that the lock piece 45a faces upward in the vertical direction. In addition, in the state which closed the rescue door 11, since the contact piece 45b abuts on the panel 2B, the rocking|fluctuation operation|movement of the lock member 45 stops. At this time, the lock piece 45a of the lock member 45 is arranged below the first cam piece 35 of the cam body 21 in the vertical direction.

In addition, although this example demonstrated the example which used the biasing spring 47 which consists of a torsion coil spring as an example of a biasing member, it is not limited to this. As the urging member, any elastic member may be used as long as it can urge the locking member 45 so that the locking piece 45a faces upward, and for example, rubber or the like may be used.

In addition, a stopper pin 48 is provided on the first side plate 33 . The stopper pin 48 protrudes from one surface of the first side plate 33 toward the folded-back portion 2a. The stopper pin 48 is arranged below the connection piece 45 c of the locking member 45 in the vertical direction in the first side plate 33 . When the lock member 45 swings, the stopper pin 48 abuts against the connecting piece 45c (see FIG. 11 ). Thereby, the rocking motion of the lock member 45 is restricted by the stopper pin 48 .

Next, the engaging member 25 will be described.

As shown in FIGS. 5 and 7 , the engaging member 25 is fixed to the folded-back portion 2a of the panel 2B. In addition, the engaging member 25 is formed in a flat plate shape which is partially bent substantially vertically. Moreover, the engaging member 25 protrudes toward the cam body 21 from the folded-back portion 2a. That is, all the members constituting the emergency exit device 10 are located in the panel 2B. Thereby, when the emergency exit device 10 is installed on the panel 2B, it is possible to prevent the influence on the arrangement of the panels 2A and 2C other than the panel 2B and the surrounding structures, and the installation work of the emergency exit device 10 can be easily performed. .

In the locked state, the engaging member 25 is arranged above the first cam piece 35 in the vertical direction. The opening operation of the rescue door 11 is restricted by the engagement of the engaging member 25 with the first cam piece 35 . As a result, the locking device 13 of the emergency rescue door apparatus 10 is locked, and the rescue door 11 is not opened.

As described above, according to the emergency exit device 10 of the present example, all the members except the engaging member 25 in the locking device 13 are accommodated in the casing 20 . Thereby, the size reduction of the emergency exit apparatus 10 can be achieved. In addition, since the cam body 21 and the detection switch 23 are not arranged in the structure other than the rescue door 11, there is no problem in the arrangement of the panels 2A and 2C other than the panel 2B on which the emergency rescue door apparatus 10 is installed, and the surrounding structures. It is possible to increase the degree of freedom in the design of the elevator car 120 by restricting it.

2. Action of the locking device

Next, the operation of the locking device 13 of the emergency exit device 10 having the above-described configuration will be described with reference to FIGS. 8 to 11 .

FIG. 8 is a plan view showing the unlocked state of the locking device 13, FIG. 9 is a view showing the locking mechanism 24 in the state of FIG. 8, and FIG. 10 is a view showing the locking device 13 in a state where the rescue door 11 is opened. FIG. 11 is a plan view showing the lock mechanism 24 in the state of FIG. 10 .

When an emergency such as a passenger trapping accident occurs in the car room 121 of the elevator car 120, the operator sets the locking device 13 of the emergency exit device 10 from the upper part of the ceiling 125 of the elevator car 120 is unlocked. Then, the operator opens the rescue door 11 to perform rescue work.

Specifically, first, the operator inserts the hand into the opening 32 a provided in the housing 20 to grasp the grasping portion 28 . Then, the operator operates the grip portion 28 to rotate the cam body 21 clockwise as shown in FIG. 8 . The first cam piece 35 passes through the lower part of the engaging member 25 in the vertical direction along with the rotation of the cam body 21 . Thereby, the engaged state of the first cam piece 35 and the engaging member 25 is released, and the locking device 13 is brought into an unlocked state. In addition, the end portion on the unlocking direction side of the first cam piece 35 is in contact with the restricting piece 27 . Thereby, the rotational movement of the cam body 21 in the unlocking direction is restricted.

In addition, the second cam piece 36 presses the roller portion 43 of the detection switch 23 in accordance with the rotational operation of the cam body 21 . Then, the switchable movable portion 42 is swung against the holding force of an unillustrated biasing member, and the switchable movable portion 42 switches between ON and OFF of an unillustrated electrical contact provided on the main body portion 41 . Moreover, the main body part 41 outputs a switching signal to the control part 190 (refer FIG. 1) when an electric contact is switched. And the control part 190 stops the drive of the hoisting machine 100 by receiving the switching signal, and prohibits the raising/lowering operation of the elevator car 120. Thereby, the rescue operation can be performed safely.

At this time, the guide pin 26 is disengaged from the first guide hole 38 along with the rotation of the cam body 21 in the unlocking direction. Then, when the first cam piece 35 of the cam body 21 comes into contact with the restricting piece 27 , the guide pin 26 is fitted into the second guide hole 39 . When the guide pin 26 is fitted into the second guide hole 39, a click feeling and a click sound are generated. Thereby, the operator can be notified that the engagement state of the first cam piece 35 and the engagement member 25 is released and that the electrical contact of the main body portion 41 is switched on and off.

As shown in FIG. 9 , when the cam body 21 is rotated in the unlocking direction, the first cam piece 35 is moved from above in the vertical direction of the locking piece 45 a of the locking member 45 . Therefore, the upper part in the vertical direction of the locking piece 45a is opened.

Next, as shown in FIG. 4 , the operator turns the rescue door 11 via the hinge portion 12 to open the emergency rescue door 3 . Thereby, as shown in FIGS. 10 and 11 , the contact piece 45b of the lock member 45 is separated from the panel 2B, and the lower part of the contact piece 45b in the vertical direction is opened. Then, by the urging force of the urging spring 47, the lock member 45 is swung so that the lock piece 45a is raised upward in the vertical direction. In addition, when the locking member 45 is swung at a predetermined angle, the connecting piece 45c comes into contact with the stopper pin 48 . Thereby, the rocking motion of the lock member 45 is stopped.

At this time, the upper end portion of the lock piece 45a in the vertical direction is disposed above the first cam piece 35 of the cam body 21 in the vertical direction. Further, the lock piece 45 a is arranged on the downstream side in the locking direction (counterclockwise direction) of the first cam piece 35 .

Then, the end portion of the first cam piece 35 on the unlocking direction (clockwise direction) side is in contact with the restricting piece 27 , and the end portion of the first cam piece 35 on the locking direction (counterclockwise direction) side is in contact with the locking piece 45 a Abut. Therefore, both the rotation of the cam body 21 in the unlocking direction and the rotation in the locking direction are restricted, and the cam body 21 is held by the restricting piece 27 and the locking piece 45a in the unlocked state. In addition, since the cam body 21 is held in the unlocked state, the swing operation of the switching movable portion 42 in the detection switch 23 is also held, and the electrical contact is not switched on and off.

Thereby, when the rescue door 11 is opened, the cam body 21 can be prevented from being rotated in the locking direction against the operator's will to switch between on and off of the electrical contact of the detection switch 23 . As a result, it is possible to maintain the state in which the raising and lowering operation of the elevator car 120 is prohibited, and it is possible to improve the safety of rescue work.

In addition, when the rescue operation is completed, as shown in FIG. 4 , the operator turns the rescue door 11 via the hinge portion 12 to close the emergency rescue door 3 . At this time, as shown in FIG. 9 , the contact piece 45b of the lock member 45 is in contact with the panel 2B. Therefore, the locking member 45 is swung so that the locking piece 45a descends downward in the vertical direction against the biasing force of the biasing spring 47 . And the lock piece 45a is arrange|positioned at the position below the 1st cam piece 35 in an up-down direction.

Next, the operator operates the grip portion 28 to rotate the cam body 21 in the locking direction (counterclockwise direction). As a result, as shown in FIGS. 5 and 6 , the first cam piece 35 enters below the engaging member 25 in the vertical direction, and the engaging member 25 is engaged with the first cam piece 35 . Therefore, the rotational movement of the rescue door 11 in the opening direction is restricted by the engaging member 25 and the first cam piece 35, and the locking device 13 is locked. In addition, since the corner portion of the outer edge portion of the first cam piece 35 is formed into a tapered shape, when the cam body 21 is rotated in the locking direction, the first cam piece 35 can be smoothly inserted below the engaging member 25 .

When the cam body 21 rotates, the pressing of the second cam piece 36 on the roller portion 43 of the detection switch 23 is released. Therefore, the switching movable portion 42 of the detection switch 23 swings from the state shown in FIGS. 8 and 10 to the state shown in FIG. 5 by the holding force of the urging member (not shown). As a result, on and off of the electrical contacts of the main body portion 41 are switched. Then, the main body portion 41 outputs a switching signal to the control portion 190 (see FIG. 1 ) when the electrical contacts are switched. Then, by receiving the switching signal, the control unit 190 permits the driving of the hoisting machine 100 to permit the raising/lowering operation of the elevator car 120 . Thereby, the elevator car 120 becomes the state which can be raised and lowered.

In addition, when the third cam piece 37 of the cam body 21 comes into contact with the roller portion 43 , the rotational movement of the cam body 21 is restricted. In addition, the guide pin 26 is disengaged from the second guide hole 39 as the cam body 21 rotates, and is fitted into the first guide hole 38 . The operator can be notified that the locking device 13 is locked by the click feeling and the click sound generated at this time. Thereby, the rescue operation using the emergency exit device 10 is completed.

It should be noted that the present invention is not limited to the above-described embodiments shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims. For example, in the above-mentioned embodiment example, the example in which the rocking motion of the lock member 45 is regulated by the contact piece 45b contact|abutting with the panel 2B was demonstrated, but it is not limited to this.

For example, the rocking motion of the lock member 45 may be restricted by abutting the lock piece 45a of the lock member 45 with the first cam piece 35 of the cam body 21 in the locked state. In this case, when the cam body 21 is rotated in the unlocking direction, the upper part in the vertical direction of the lock piece 45a is opened, and therefore, the lock member 45 can be rocked. As a result, the rotational movement of the cam body 21 can be restricted until the rescue door 11 is opened.

In addition, the elevator car having the above-described structure can also be applied to a so-called machine-room-less elevator that does not have a machine room in the elevator hoistway.

It should be noted that terms such as "parallel" and "orthogonal" are used in the present specification, but these terms not only mean "parallel" and "orthogonal" in the strict sense, but may also include "parallel" and "orthogonal". The states of "substantially parallel" and "substantially orthogonal" in the range that can further exhibit its function including "orthogonal".

Description of reference numbers:

1...elevator, 2A, 2B, 2C...panel, 2a...return portion, 3...emergency exit, 10...emergency exit device, 11...rescue door, 12...hinge, 13...locking device, 20...frame , 21...cam body, 22...rotating shaft, 22a...keyway, 23...detection switch, 24...locking mechanism, 25...engaging member, 26...guide pin, 27...restricting piece, 28...grip portion, 31...substrate, 32...cover, 32a...opening, 33...first side plate, 34...second side plate, 35...first cam piece, 36...second cam piece, 37...third cam piece, 38...first guide hole, 39...second guide hole, 41...main body portion, 42...switchable movable portion, 43...roller portion, 45...locking member, 45a...locking piece, 45b...abutting piece, 45c...connecting piece, 46...swinging Shaft, 47a...one end, 47b...other end, 48...stop pin, 100...hoist, 110...hoistway, 120...elevator car, 121...cabinet, 122...door unit, 123...door, 124... Entrance and exit, 125...ceiling, 126...side panels, 127...car floor, 130...slings, 140...counterweight, 160...machine room, 190...control department.

Claims (4)

1. An elevator cage, wherein,

the elevator car is provided with:

a hollow car chamber; and

an emergency exit device which is openably and closably provided at an emergency exit provided in a ceiling of the car room,

the emergency exit device is provided with:

a rescue door covering the emergency exit;

a hinge portion that supports the rescue door to be rotatable with respect to the ceiling; and

a locking device for locking the rescue door in a lockable manner,

the locking device is provided with:

a frame body provided to the rescue door;

a cam body housed in the housing;

a rotating shaft which is accommodated in the housing and rotatably supports the cam body;

a detection switch which is housed in the housing and detects a locked state and an unlocked state of the locking device;

an engaging member disposed on the ceiling and engaged with the cam body; and

a grip portion for performing a rotation operation of the cam body,

the cam body has:

a first cam piece engaged with the engaging member; and

a second cam piece for pressing a switching movable portion provided in the detection switch for switching on and off of the electrical contact when the cam body is rotated,

the holding portion is located in a projection plane of the cam body.

2. The elevator car of claim 1,

the locking device is provided with:

a restricting piece provided in the housing and abutting against an end portion of the first cam piece on the unlocking direction side when the cam body is rotated in the unlocking direction; and

and a lock mechanism that abuts against an end portion of the first cam piece on the side in the locking direction and restricts rotation of the cam body in the locking direction.

3. The elevator car of claim 1,

the locking device is provided with:

a restricting piece provided in the housing and abutting against an end portion of the first cam piece on the unlocking direction side when the cam body is rotated in the unlocking direction; and

a lock mechanism that restricts rotation of the cam body in a locking direction,

the frame body has:

a base plate mounted on the rescue door;

a cover that faces the substrate, covers the detection switch, and has an opening facing the grip portion;

a first side plate that is substantially vertically continuous from one end of the base plate; and

a second side plate that is continuous substantially perpendicularly from the other end portion of the base plate and is opposed to the first side plate,

the cam body is formed in a flat plate shape and rotates substantially parallel to one surface of the base plate,

the first cam piece is extended in a fan shape from a side portion of the cam body and is arranged below the engaging member in a vertical direction in a locked state of the locking device,

the holding portion is provided on the other surface of the cam body opposite to the one surface facing the substrate,

the lock mechanism includes:

a swing shaft protruding from the first side plate; and

and a lock member that is swingably supported by the swing shaft and that abuts against an end portion of the first cam piece on the side in the locking direction in the locked state of the locking device.

4. An elevator, wherein the elevator is provided with a cage,

the elevator is provided with:

an elevator car which performs a lifting operation in the lifting passage;

a sling connected with the elevator car;

a hoist on which the sling is wound; and

a control unit for controlling the driving of the hoist,

the elevator car is provided with:

a hollow car chamber; and

an emergency exit device which is openably and closably provided at an emergency exit provided in a ceiling of the car room,

the emergency exit device is provided with:

a rescue door covering the emergency exit;

a hinge portion that supports the rescue door to be rotatable with respect to the ceiling; and

a locking device for locking the rescue door in a lockable manner,

the locking device is provided with:

a frame body provided to the rescue door;

a cam body housed in the housing;

a rotating shaft which is accommodated in the housing and rotatably supports the cam body;

a detection switch which is housed in the housing, detects a locked state and an unlocked state of the locking device, and outputs a detection signal to the control unit;

an engaging member disposed on the ceiling and engaged with the cam body; and

a grip portion for performing a rotation operation of the cam body,

the cam body has:

a first cam piece engaged with the engaging member; and

a second cam piece for pressing a switching movable portion provided in the detection switch for switching on and off of the electrical contact when the cam body is rotated,

the holding portion is located in a projection plane of the cam body.

Images