CN113911867B - Elevator door and elevator - Google Patents

Abstract

The present invention relates to an elevator door and an elevator. This elevator door is equipped with: a locking device having an upper lock side hook member and a fixed hook member that engages with the upper lock side hook member at the time of locking; and a locking detection device that detects whether or not the locking device is in a locked state, the locking detection device including a movable portion attached to the upper lock side hook member, the movable portion extending in a door opening and closing direction in which the elevator door is opened and closed, and a fixed portion provided at a position opposite to the movable portion, the movable portion having a convex cross section perpendicular to the door opening and closing direction, the fixed portion including: a fixed contact point which is contacted with the lower end of the movable part during locking; and a fixed cover portion that covers the fixed contact, the fixed cover portion being provided in parallel with the movable portion along the door opening and closing direction and having a concave shape in a cross section perpendicular to the door opening and closing direction.

Description

Elevator doors and elevators

technical field

The invention relates to an elevator, in particular to an elevator door.

Background technique

Conventionally, the car door and landing door of an elevator are equipped with a detection device for detecting the opening and closing of the door. If the door is detected to be open, the operation of the elevator is stopped and countermeasures are taken to ensure the safety of passengers.

Such a detection device detects the switch of the door through a circuit, and maintenance personnel may have the risk of electric shock if they touch it.

International Publication No. 2017/179197 discloses a protective cover for contacts, which is used for locking devices of landing doors, and is used to prevent maintenance personnel from electric shock.

Contents of the invention

Although the protective cover for the above-mentioned contacts can protect maintenance personnel from electric shock, it has no slidable area in the opening and closing direction of the door, and cannot cooperate with the deviation of the car stop position in the opening and closing direction of the door.

The object of the present invention is to provide an elevator door, which solves at least one of the above-mentioned technical problems, not only can protect maintenance personnel from electric shock, but also has a slidable area in the opening and closing direction of the door, and can be matched with the elevator in the opening and closing direction of the door. The deviation of the car stop position.

In order to solve the above-mentioned technical problems, the elevator door of the present invention includes: a locking device having a locking side hook member and a fixed hook member that engages with the locking side hook member when locked; A lock detection device for whether it is in a locked state, the lock detection device includes a movable part and a fixed part, the movable part is installed on the locking side hook member, and the movable part is along the door opening and closing direction The section extending and perpendicular to the door opening and closing direction is downwardly convex, the door opening and closing direction is the direction in which the elevator door is opened and closed, the fixed part is arranged at a position opposite to the movable part, and has : a fixed contact that is in contact with the lower end of the movable part when locked; and a fixed cover that covers the fixed contact, and the fixed cover is parallel to the movable part along the door opening and closing direction The section arranged and perpendicular to the door opening and closing direction is concave.

Preferably, the movable part has a flat top and a lower convex part protruding downward from the lower end of the flat top, and a cross section of the movable part perpendicular to the door opening and closing direction is roughly T-shaped.

Preferably, the fixed cover part has a front wall part covering the front of the fixed contact, a rear wall part covering the rear of the fixed contact, and a bottom on which the fixed contact is installed, and the fixed cover part The section perpendicular to the door opening and closing direction is roughly U-shaped.

The present invention also provides an elevator including the elevator door described above.

The elevator door of the present invention can not only protect maintenance personnel from electric shock, but also has a slidable area in the opening and closing direction of the door, and can adapt to the deviation of the car stop position in the opening and closing direction of the door.

Problems, configurations, and effects other than those described above will be clarified by the description of the following embodiments.

Description of drawings

FIG. 1 is a front view schematically showing a locking device and a locking detection device according to an embodiment of the present invention.

Fig. 2 is a front view schematically showing a locking detection device according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view schematically showing a locking detection device according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view schematically showing a locking detection device according to an embodiment of the present invention.

Fig. 5 is a front view schematically showing a locking device and a locking detection device according to an embodiment of the present invention.

Fig. 6 is a diagram schematically showing an example of an elevator door to which the locking device and the locking detection device of the present invention are applied.

Fig. 7 is an enlarged view schematically showing a partial structure of the elevator door of Fig. 6 .

Fig. 8 is a diagram schematically showing a locked and unlocked state of a partial structure of the elevator door of Fig. 7 .

Fig. 9 is a diagram schematically showing an example of an elevator to which the elevator door of the present invention is applied.

＜Symbols in the drawings＞

1 elevator door; 10 locking device; 11 locking side hook member; 12 fixed hook member; 20 locking detection device; 21 movable part; 211 lower convex part; 212 flat top; 22 fixed part; 221 fixed contact 222 fixed cover part; 2221 front wall part; 2222 rear wall part; 2223 bottom; 30, 30a, 30b door leaf; 40a, 40b door hanger; 2 link member; 53 linkage piece; 54 first limit piece; 55 second limit piece; 56 elastic piece; 57 transmission part; 60 door unit; 62 drive part; 71 linkage wheel;

Detailed ways

Hereinafter, specific implementations of the present invention will be described in detail with reference to the drawings and examples.

FIG. 1 is a front view schematically showing a locking device and a locking detection device according to an embodiment of the present invention. The elevator door of the present invention may be a landing door or a car door. That is to say, the locking device and the locking detection device of the present invention can be applied to landing doors, and can also be applied to car doors. FIG. 1 is a front view viewed from the hoistway side when it is applied to a landing door, or a front view viewed from the landing side when it is applied to a car door. The locking device and the locking detection device in Fig. 1 are in the locked state.

In Fig. 1, X represents the switch direction (horizontal direction, left-right direction) of elevator door, Y represents the up-down direction (vertical direction), and Z represents the front-to-back direction (thickness direction, the direction where the observer is located is the front, and the opposite direction is the rear) ( The following figures are the same).

The elevator door includes a locking device 10 and a locking detection device 20 . The locking device 10 includes a locking-side hook member 11 and a fixed hook member 12 that engages with the locking-side hook member 11 when locked.

The locking-side hook member 11 has a hook portion 111 , a base portion 113 , and a connection portion 112 between the hook portion and the base portion. The hook portion 111 is located above a hook portion 121 of the fixed hook member 12 described later. As shown in the drawing, in the locked state, the hook portion 111 of the locking side hook member 11 and the hook portion 121 of the fixed hook member 12 are engaged with each other with a space S therebetween. The interval S varies due to movement (movement) of the lock-side hook member 11 .

The lock-side hook member 11 is attached to a support plate to be described later via a rotation shaft 51 penetrating through the base portion 113 . The support plate moves in the X direction with the opening and closing of the door leaf. As shown in FIG. 5 , the lock-side hook member 11 can be rotated counterclockwise about the rotation shaft 51 to be disengaged from the fixed hook member 12 , and the engagement between the two can be released.

The locking-side hook member 11 also has a bracket 114 that is fixed to the connecting portion 112 so as to protrude downward.

The fixed hook member 12 has a hook portion 121 and a base portion 122 . The fixed hook member 12 is fixed to the door unit and will not move with the opening and closing of the door leaf.

Fig. 2 is a front view schematically showing a locking detection device according to an embodiment of the present invention, in which a movable part and a fixed part are shown separately. Fig. 3 is a cross-sectional view schematically showing a lock detection device according to an embodiment of the present invention, taken along line AA of Fig. 1 . Fig. 4 is a cross-sectional view schematically showing a locking detection device according to an embodiment of the present invention, in which the movable part and the fixed part are shown separately.

The lock detection device 20 is used to detect the locked state, that is, to detect whether the locking device is in the locked state. As shown in FIGS. 1 to 4 , the locking detection device 20 includes a movable portion 21 and a fixed portion 22 .

The movable part 21 is attached to the lock-side hook member 11, extends along the opening and closing direction of the elevator door (hereinafter referred to as "door opening and closing direction"), and has a downwardly convex cross section perpendicular to the door opening and closing direction. The fixed part 22 is arranged at a position opposite to the movable part 21, and has: a fixed contact 221 that contacts the lower end of the movable part 21 when locked; and a fixed cover part 222 that covers the fixed contact 221. The movable part 21 is arranged parallel to the door opening and closing direction and the cross section perpendicular to the door opening and closing direction is concave.

With such a structure, the lock detection device 20 can not only protect maintenance personnel from electric shock, but also has a slidable area in the door opening and closing direction, and can adapt to the deviation of the car stop position in the door opening and closing direction.

First, because the fixed contact 221 that is energized is covered by the fixed cover 222, it will not be exposed no matter in the locked state or in the unlocked state (unlocked state), and maintenance personnel can be prevented from getting an electric shock.

Secondly, the movable part 21 and the fixed part 22 are arranged in parallel along the door switch direction, and the cross section perpendicular to the door switch direction of the movable part 21 is downward convex and the fixed part 22 is concave. A part can cooperate with the concave part of the fixing part 22 and can slide in the door opening and closing direction. In this way, by providing the lock detection device 20 with a slidable region in the door opening and closing direction, it is possible to adapt to the deviation of the car stop position in the door opening and closing direction.

In the elevator, when the car moving up and down stops at the landing, the stop position of the car in the door opening and closing direction cannot be exactly the same every time, and deviations will occur. The locking side hook member 11 and the fixed hook member 12 The distance S of the distance varies, and the locking detection device 20 of the present invention has a slidable area in the door opening and closing direction, and can adapt to such a change of the distance S.

The movable part 21 and the fixed part 22 of the locking detection device 20 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings 2 to 4 .

The movable portion 21 is attached to the locking-side hook member 11 of the locking device 10 through a bracket 114 . Therefore, the movable portion 21 moves (moves) accompanying the movement (movement) of the locking-side hook member 11 .

The movable part 21 extends along the door opening and closing direction, and its lower end protrudes downward. The movable portion 21 is integrally formed of, for example, a conductive metal material. As an example, the movable part 21 has a flat top 211 and a lower convex part 212 .

The flat top 211 extends along the door opening and closing direction, preferably, the length in the door opening and closing direction is greater than the width in the up and down direction. Preferably, the flat top portion 211 is in the shape of a vertically flat plate, and the thickness in the front-back direction is greater than the width in the up-down direction. The upper end of the flat top 211 is fixed to the bracket 114 .

The lower convex portion 212 is formed to protrude downward from the lower end of the flat top portion 211 . The lower convex portion 212 extends along the door opening and closing direction, and preferably, its length in the door opening and closing direction is greater than its width in the up and down direction. Preferably, the lower convex portion 212 is in the shape of a front-rear flat plate, and the width in the up-down direction is greater than the thickness in the front-rear direction. The thickness of the lower convex portion 212 corresponds to and is smaller than the inner distance T between the front and rear wall portions of the fixed cover portion 222 described later. The lower convex portion 212 has a predetermined length in the door opening and closing direction, and the predetermined length is at least greater than an outer distance U between a pair of fixed contacts 221 to be described later.

Preferably, as shown in FIGS. 3 and 4 , the continuous section of the movable portion 21 perpendicular to the door opening and closing direction is substantially T-shaped. That is to say, the flat top portion 211 and the lower convex portion 212 of the movable portion 21 are vertically connected, and the lower convex portion 212 is located approximately in the middle of the front-back direction of the lower end of the flat top portion 211 . Such a structure can make the movable part 21 cooperate with the fixed part 22 better, and make the sliding of the movable part 21 in the door opening and closing direction more smooth.

The above-mentioned movable part 21 is only an example. Although not shown, the movable portion 21 may have a substantially L-shaped cross section perpendicular to the door opening and closing direction. That is to say, the flat top portion 211 and the lower convex portion 212 in the movable portion 21 are vertically connected, and the lower convex portion 212 is located at the front end or the rear end of the lower end of the flat top portion 211 in the front-rear direction. The movable part 21 may not have the flat top part 211 but only the lower convex part 212 .

The fixed part 22 is fixed to a door unit described later, and is provided at a position facing the movable part 21 when locked, and the fixed part 22 does not move when the door is opened and closed.

The fixed part 22 has a pair of fixed contacts 221 arranged along the door opening and closing direction. The pair of fixed contacts 221 are in the energized state, and when the lower end of the movable part 21 contacts with the pair of fixed contacts 221, the pair of fixed contacts 221 are closed to connect the detection circuit to detect the locked state.

Preferably, when in contact with the lower end of the movable part 21 , the fixed contact 221 can move downward while keeping in contact with the movable part 21 , and the part near the lower end sinks into the bottom 2223 to reduce its height. In this way, not only can the lower convex part 212 be matched to make it slide smoothly, but also the fixed contact can be avoided from being damaged.

The fixed cover 222 has a front wall 2221 covering the front of the fixed contact 221 , a rear wall 2222 covering the rear of the fixed contact 221 , and a bottom 2223 on which the fixed contact 221 is mounted. Preferably, the front and rear walls of the fixed cover portion 222 are in a shape that is wide at the top and narrow at the bottom, such as a trapezoid.

The front wall portion 2221 and the rear wall portion 2222 extend along the door opening and closing direction, and the width in the vertical direction is greater than the height of the fixed contact 221 . Preferably, the length in the door opening and closing direction of the front wall portion 2221 and the rear wall portion 2222 is greater than the width in the vertical direction. In addition, the front wall part 2221 and the rear wall part 2222 are in the shape of a front-rear flat plate, and the width in the up-down direction is larger than the thickness in the front-rear direction.

Preferably, as shown in FIGS. 3 and 4 , the continuous section of the fixed covering portion 222 perpendicular to the door opening and closing direction is substantially U-shaped. That is, the fixed cover portion 222 is a groove-shaped member that is open on the left, right, and upper sides. The inner spacing T of the groove, that is, the inner spacing T between the front wall portion 2221 and the rear wall portion 2222 is greater than the thickness (diameter) of the pair of fixed contacts 221 in the front and rear direction, and the pair of fixed contacts 221 are along the direction of door opening and closing. The pair of fixed contacts 221 are accommodated in the groove, and the pair of fixed contacts 221 are located on the inner side of the groove than the left and right ends. Such a structure can make the fixed part 22 cooperate with the movable part 21 better, and it is easier to ensure the slidable area in the door opening and closing direction. Moreover, the fixed contact 221 will not be exposed no matter in the locked state or in the unlocked state, which can prevent maintenance personnel from getting an electric shock.

The above-mentioned fixed covering part 222 is only an example. Although not shown in the figure, the fixed cover portion 222 may be opened only to the left and upward, or only to the right and upward, or only to the upward.

Fig. 6 is a diagram schematically showing an example of an elevator door to which the locking device and the locking detection device of the present invention are applied. Fig. 7 is an enlarged view schematically showing a partial structure of the elevator door of Fig. 6 , and Fig. 8 is a view schematically showing an unlocked state of the partial structure. As described above, the elevator door of the present invention may be a landing door or a car door. As an example, an example of a car door is shown in the figure, and it will be described below. Fig. 6 is a front view seen from the landing side, and the elevator doors in the figure are locked.

As shown in FIG. 6, the elevator door 1 has a pair of door leaves 30 (30a, 30b), the left door leaf 30a opens to the left, and the right door leaf 30b opens to the right. A threshold 31 is provided below the door leaf 30 . The upper ends of the door leaf 30a and the door leaf 30b are respectively equipped with a door hanger 40a and a door hanger 40b. The moving roller 41 is rotatably attached to the door hanger 40a and the door hanger 40b. A support plate 50 is fixed to the front side of one door hanger (for example, the left door hanger 40a). The door hanger 40a and the door hanger 40b have a connection part 42a and a connection part 42b extending upward, respectively. The door hanger 40a and the door hanger 40b are connected to a drive belt 63 of a door unit 60 described later through a connection portion 42a and a connection portion 42b, respectively.

The support plate 50 has a rotation shaft 51 through which the above-described lock-side hook member 11 is rotatably mounted to the support plate 50 . A first link member 52 a and a second link member 52 b each having two shaft portions (a first shaft and a second shaft) are attached to the support plate 50 . The 1st link member 52a and the 2nd link member 52b are attached to the support plate 50 via the 1st shaft located below each. The link 53 is attached to the support plate 50 via the two upper second shafts of the first link member 52a and the second link member 52b. The link 53 has a transmission portion 57 at the left (door opening side) end, and the lock-side hook member 11 has a transmission pin 115 at the base, and the transmission portion 57 is in contact with the transmission pin 115 . A first stopper 54 , a plurality of (for example, three) second stoppers 55 and elastic members 56 are also attached to the support plate 50 . In addition, the interlocking roller 71 of the landing door is also shown by the dotted line in the drawing. Before the car stops at a landing and the driving unit 62 described later is driven, the interlocking roller 71 faces the interlocking member 53 front and rear and is positioned on the door-opening side of the interlocking member 53 .

The door unit 60 is provided above the door leaf 30 , and the above-mentioned fixing hook member 12 and fixing portion 22 are fixed to the door unit 60 . The door unit 60 includes a door rail 61 , a drive portion 62 , a drive belt 63 , and a driven roller 64 . The driving belt 63 circulates between the driven roller 64 and the driving roller of the driving part 62, and the upper and lower parts of the driving belt 63 move in opposite directions to each other. The connection part 42a is connected to the lower part of the driving belt 63, and the connection part 42b is connected to the upper part of the driving belt 63. As shown in FIG. The driving part 62 drives the driving belt 63 to move, and the door leaf 30a and the door leaf 30b approach or separate from each other through the connecting part 42A and the connecting part 42b, and the elevator door is opened or closed.

As shown in FIG. 7 , in the locked state, the link 53 is lifted upward by the first link member 52 a and the second link member 52 b. Since the first stopper 54 is in contact with the left end portion of the first link member 52a, the counterclockwise rotation of the first link member 52a and the second link member 52b is restricted. At this time, the second stopper 55 is located at a position with a gap facing the right end of the link 53 . In addition, as described above, the hook portion of the lock-side hook member 11 and the hook portion of the fixed hook member 12 are engaged with the interval S therebetween. The elastic member 56 exerts a downward force on the locking-side hook member 11 , that is, a force towards the locking direction.

As shown in FIG. 8 , when the car stops at a landing and the drive unit 62 drives to move the door, the link 53 comes into contact with the link roller 71 . Door leaf continues to move, and then interlocking member 53 is pressed to the right side by interlocking roller 71. This causes the first link member 52a and the second link member 52b to rotate about the first axis so as to descend downward, thereby moving the link 53 downward to the right. The movement of the link 53 is transmitted to the lock-side hook member 11 through the transmission portion 57 and the transmission pin 115 . The locking-side hook member 11 overcomes the force of the elastic member 56, and the hook part rotates upward about the rotating shaft 51, that is, in the unlocking direction, so that the engagement between the locking-side hook member 11 and the fixed hook member 12 is released. With the movement of the lock-side hook member 11, the movable part 21 of the lock detection device 20 separates from the fixed contact point of the fixed part 22 to detect the unlocked state (release of the locked state). When the link 53 abuts against the second stopper 55 , its movement stops.

Fig. 9 is a diagram schematically showing an example of an elevator to which the elevator door of the present invention is applied. Although a traction elevator having a machine room is shown in the drawings and will be described below, an elevator without a machine room may also be used. The present invention can also be applied to elevators other than traction elevators.

As an example, as shown in the figure, in the elevator 100, one end of the traction rope 90 suspends the car 91, the other end suspends the counterweight 92, and the middle part winds around the traction sheave of the traction machine 93 in the machine room. The traction rope 90 is frictionally driven by the traction machine 93, so that the car 91 and the counterweight 92 are raised and lowered in opposite directions in the hoistway. More specifically, in the hoistway, the car 91 is raised and lowered along the car guide rail 94, and the counterweight 92 is raised and lowered along the counterweight guide rail (not shown). A control cabinet 95 for controlling the operation of the elevator is installed in the machine room. In addition, guide wheels 96 may also be provided.

The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-mentioned embodiments have been described in detail in order to make the present invention more intelligible, but are not necessarily limited to include all the configurations described. In addition, it is possible to replace a part of the structure of one embodiment with the structure of another embodiment, and it is also possible to add the structure of another embodiment to the structure of one embodiment. In addition, addition, deletion, and replacement of other configurations can be performed on a part of the configurations of the respective embodiments.

Claims (4)

1. A door for an elevator, comprising: a locking device having a locking side hook member and a fixed hook member engaged with the locking side hook member when locked; and detecting whether the locking device is locked. The locking detection device of the state is characterized in that, The locking detection device includes a movable part and a fixed part, The movable part is installed on the locking side hook member, the movable part extends along the door opening and closing direction and the section perpendicular to the door opening and closing direction is convex downward, and the door opening and closing direction is the direction of the elevator with the direction of door opening and closing, The fixed part is arranged at a position opposite to the movable part, and has: a fixed contact that contacts the lower end of the movable part when locked; and a fixed cover that covers the fixed contact. The covering part is arranged parallel to the movable part along the door opening and closing direction and has a concave cross section perpendicular to the door opening and closing direction. 2. The elevator door according to claim 1, wherein: The movable part has a flat top and a convex part protruding downward from the lower end of the flat top, and the cross section of the movable part perpendicular to the door opening and closing direction is roughly T-shaped. 3. The elevator door according to claim 1, wherein: The fixed cover part has a front wall part covering the front of the fixed contact, a rear wall part covering the rear of the fixed contact, and a bottom on which the fixed contact is installed, and the fixed cover part is connected with the fixed contact. The section perpendicular to the door switch direction is roughly U-shaped. 4. An elevator, characterized in that, The elevator door according to any one of claims 1 to 3 is provided.

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