Interlock device for elevator door

Abstract

To provide an interlock device for an elevator door, which can prevent contact with a long article present in a hoistway and unlocking of an interlock.SOLUTION: This interlock device for the elevator door comprises: an interlock that locks a landing door; and an engaging member provided in a car door to unlock the landing door. The interlock includes a lock mechanism for taking a locked state and an unlocked state of the landing door, a locking part that locks the lock mechanism in the locked state, an engaged part that is engaged with the engaging member to unblock the lock mechanism, thereby opening / closing the landing door, and a first cover that covers the engaged part. The first cover is disposed at a position not interfering with the engaging member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The embodiments relate to an interlock device for elevator doors. [Background technology]

[0002] An interlock is provided on the landing doors at elevator landings. The interlock locks the landing doors so that they cannot be opened. When the elevator car lands on the floor, an engagement vane on the car door engages with the interlock, releasing the locked state of the landing door. This allows the landing door to open in conjunction with the opening operation of the car door.

[0003] Such interlocks may come into contact with long objects present in the hoistway, potentially causing damage or malfunction. An example of a long object is the tail cord. The tail cord connects the car to a control panel installed in the hoistway. The tail cord includes wiring for supplying power and wiring for transmitting control signals. Because the tail cord hangs down from the car to the bottom of the hoistway, it is possible that the tail cord may swing when the car rises or falls and come into contact with the interlock device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 58-47792 [Patent Document 2] Patent Publication No. 2021-91528 Summary of the Invention [Problem to be solved by the invention]

[0005] The present embodiment aims to provide an elevator door interlock device that can prevent long objects present in the elevator shaft from coming into contact with the interlock and can prevent the interlock from being unlocked. [Means for solving the problem]

[0006] An elevator door interlock device according to an embodiment is a device for locking a landing door interlocked with an elevator car door. The interlock device includes an interlock for locking the landing door and an engaging member provided on the car door for unlocking the landing door. The interlock includes a locking mechanism for switching the landing door between a locked state and an unlocked state, an engaged part for engaging the locking mechanism in the locked state, an engaged part for engaging with the engaging member to switch the locking mechanism to the unlocked state and open / close the landing door, and a first cover for covering the engaged part. The first cover is positioned so as not to interfere with the engaging member. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an example of an elevator door to which an interlock device according to a first embodiment is applied. [Figure 2] FIG. 2 is a diagram for explaining the conventional configuration of the interlock device shown in FIG. 1, showing a locked state. [Figure 3] FIG. 3 is a diagram showing the unlocked state of the interlock device of FIG. [Figure 4] FIG. 4 is a diagram showing the interlock device according to the first embodiment. [Figure 5] FIG. 5 is a top view showing the first cover of FIG. [Figure 6] FIG. 6 is a perspective view showing the first cover of FIG. [Figure 7] FIG. 7 is a diagram showing an interlock device according to the second embodiment. [Figure 8] FIG. 8 is a perspective view showing the second cover of FIG. [Figure 9] FIG. 9 is a partial enlarged view showing the second cover of FIG. [Figure 10] FIG. 10(a) is a diagram showing a second fastening bolt for attaching the second mounting member to the first door panel, and FIG. 10(b) is a diagram showing a third fastening bolt for attaching the third mounting member to the first door panel. [Figure 11] FIG. 11 is a diagram showing an interlock device according to the third embodiment. [Figure 12] 12 is a perspective view showing the third cover of FIG. 11. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An elevator door interlock device according to an embodiment of the present invention will now be described with reference to the drawings.

[0009] (First embodiment) First, an elevator door interlock device according to a first embodiment of the present invention will be described with reference to Figures 1 to 6. First, the elevator door according to this embodiment will be described. The elevator door corresponds to an elevator landing door.

[0010] As shown in Fig. 1, the landing door 1 is installed at a landing provided on each floor of a building. The landing door 1 interlocks with a car door (not shown) provided on the car when the car (not shown) lands on its floor. The car is provided with a drive device (not shown) that drives the car door, and this drive device opens and closes the car door in conjunction with the landing door 1.

[0011] 1, in this embodiment, the landing door 1 includes a first door panel 2 and a second door panel 3. The landing door 1 has a double-hinged structure, and the first door panel 2 and the second door panel 3 are configured to move in opposite directions.

[0012] A header case 4 is disposed above the first door panel 2 and the second door panel 3. The header case 4 is fixed to the wall of the elevator shaft. A door rail 5 extending laterally is fixed to the header case 4. A door hanger 6 is fixed to each of the first door panel 2 and the second door panel 3. Each door hanger 6 includes a door roller 7 that can roll on the door rail 5, and the first door panel 2 and the second door panel 3 are movable laterally along the door rail 5.

[0013] Next, an elevator door interlock device according to this embodiment (hereinafter simply referred to as interlock device 10) will be described. Interlock device 10 is a device for locking hall doors 1 having a double-hinged structure that are interlocked with car doors provided on a passenger car.

[0014] As shown in FIGS. 1 and 2, the interlock device 10 includes an interlock 11 and engagement vanes 12A and 12B.

[0015] The engagement vanes 12A and 12B are an example of engagement members. The engagement vanes 12A and 12B are attached to a car door (not shown), and engage with the interlock 11 to unlock the landing door 1. In this embodiment, a pair of engagement vanes 12A and 12B are attached to the car door with a gap between them, and the engagement vanes 12A and 12B are arranged on both sides of a lock release roller 19 and a door opening / closing roller 20 (described later) of the interlock device 10 at a landing where the car has landed. The gap between the engagement vane 12A and the engagement vane 12B is variable. When the landing door 1 is in a locked state, the gap between the engagement vane 12A and the engagement vane 12B is relatively wide. When the landing door 1 is in an unlocked state, the gap between the engagement vane 12A and the engagement vane 12B is relatively narrow. At this time, the lock release roller 19 and the door opening / closing roller 20 may be abutted by the engaging vane 12A on the door closing side and the engaging vane 12B on the door opening side, so that the lock release roller 19 and the door opening / closing roller 20 are sandwiched between the pair of engaging vanes 12A, 12B.

[0016] The interlock 11 is configured to lock the landing door 1. More specifically, the interlock 11 includes a locking mechanism 13, a locked portion 14, an engaged portion 15, a first cover 30, a first mounting member 31, and a first fastening bolt 32.

[0017] The locking mechanism 13 is provided on the first door panel 2 of the landing door 1. The locking mechanism 13 is configured to place the landing door 1 in a locked state or an unlocked state.

[0018] The lock mechanism 13 includes a first swing lever 16, a second swing lever 17, and a link member .

[0019] As shown in FIGS. 1 to 3, the first swing lever 16 is swingably attached to the door hanger 6 attached to the first door panel 2. In the locked state, the first swing lever 16 is locked to the locked portion 14. As shown in FIGS. 2 and 3, the first swing lever 16 includes an arm 16b extending from a swing fulcrum 16a toward the second door panel 3. A protrusion 16c that protrudes downward is provided at the tip of the arm 16b. A bearing 16d is attached to the swing fulcrum 16a to enable the first swing lever 16 to swing relative to the door hanger 6. The bearing 16d is located on the side of the arm 16b that faces the car door (the front side of the paper in FIGS. 2 and 3).

[0020] The second swing lever 17 is swingably attached to the first door panel 2. The second swing lever 17 includes a first arm 17b extending from a swing fulcrum 17a toward the second door panel 3, and a second arm 17c extending from the swing fulcrum 17a toward the first swing lever 16 (upward from the swing fulcrum 17a). The second arm 17c extends in a different direction from the first arm 17b.

[0021] The link member 18 connects the first rocking lever 16 and the second rocking lever 17. More specifically, one end of the link member 18 is connected to the middle portion of the arm 16b of the first rocking lever 16, and the other end of the link member 18 is connected to the tip portion of the first arm 17b of the second rocking lever 17. The link member 18 extends in the vertical direction. In this way, the first rocking lever 16 and the second rocking lever 17 rock together.

[0022] The link member 18 is disposed on the side of the second door panel 3 (the door-closing side, left side in FIG. 4) with respect to the swing fulcrum 16a of the first swing lever 16 and the swing fulcrum 17a of the second swing lever 17. The link member 18 is disposed on the door-closing side with respect to a lock release roller 19 and a door opening / closing roller 20 of the engaged portion 15, which will be described later.

[0023] The link member 18 may be bent in the normal direction of the first door panel 2 (the normal direction to the paper in FIGS. 2 and 3). More specifically, the second rocking lever 17 is disposed on the side facing the car door relative to the first rocking lever 16. In other words, the first rocking lever 16 is disposed in a position further back than the second rocking lever 17 relative to the paper in FIGS. 2 and 3, and is disposed in a position farther from the car door than the second rocking lever 17. For this reason, the link member 18 connecting the first rocking lever 16 and the second rocking lever 17 may include a portion that is bent in the normal direction to the first door panel 2.

[0024] The locked portion 14 is provided on the second door panel 3 of the landing door 1. More specifically, the locked portion 14 is attached to a door hanger 6 attached to the second door panel 3 in a swingable manner. The locked portion 14 locks the lock mechanism 13 in the locked state. More specifically, the locked portion 14 is configured to lock the first swing lever 16 and prevent the first swing lever 16 from swinging so that the landing door 1 does not open. For example, the locked portion 14 may include an opening (not shown) into which the above-mentioned protrusion 16c provided at the tip of the first swing lever 16 can be inserted. When the protrusion 16c is inserted into this opening, the locked portion 14 locks the first swing lever 16.

[0025] The engaged portion 15 is configured to be engageable with the engaging vanes 12A, 12B. When the engaged portion 15 is engaged with the engaging vanes 12A, 12B, the engaged portion 15 puts the lock mechanism 13 into an unlocked state, thereby opening and closing the landing door 1. The engaged portion 15 may be attached to the second swing lever 17.

[0026] The engaged portion 15 may include an unlocking roller 19 with which the engaging vanes 12A, 12B abut to put the locking mechanism 13 into an unlocked state, and a door opening / closing roller 20 with which the engaging vanes 12A, 12B abut to open or close the landing door 1. The unlocking roller 19 is an example of an unlocking member, and the door opening / closing roller 20 is an example of a door opening / closing member. The unlocking roller 19 is attached to the second arm 17c of the second swing lever 17. The unlocking roller 19 is disposed on the first swing lever 16 side with respect to the swing fulcrum 17a of the second swing lever 17, and is disposed above the swing fulcrum 17a. The door opening / closing roller 20 is disposed at the swing fulcrum 17a of the second swing lever 17. The unlocking roller 19 and the door opening / closing roller 20 are disposed on the side of the second swing lever 17 facing the car door. The unlocking roller 19 and the door opening / closing roller 20 have the same diameter.

[0027] When the landing door 1 is opened, as shown in FIG. 2, one of the engagement vanes 12A comes into contact with the unlock roller 19. This is because, when the landing door 1 is in the locked state, the gap between the engagement vane 12A and the engagement vane 12B is relatively wide, and the unlock roller 19 is disposed on the door-closing side with respect to the door-opening / closing roller 20. As a result, when the engagement vanes 12A and 12B engage with the engaged portions 15 in the locked state, the engagement vane 12A comes into contact with the unlock roller 19 without coming into contact with the door-opening / closing roller 20. When the car door is opened in this state, the engagement vane 12A pushes the unlock roller 19 to the side opposite the second door panel 3 (the door-opening side, the right side in FIG. 2), and the second swing lever 17 rotates clockwise in FIG. 2. During this time, the gap between the engagement vane 12A and the engagement vane 12B gradually narrows.

[0028] In conjunction with the second swing lever 17, the first swing lever 16 also rotates clockwise in Fig. 2. As a result, as shown in Fig. 3, the protruding portion 16c of the first swing lever 16 is lifted upward from the locked portion 14, and the locked state of the landing door 1 is released.

[0029] As the car door continues to open, as shown in FIG. 3, the unlock roller 19 and the door opening / closing roller 20 are aligned in the vertical direction, and the gap between the engagement vane 12A and the engagement vane 12B becomes relatively narrow. As a result, the engagement vane 12A abuts against both the unlock roller 19 and the door opening / closing roller 20 on the door-closing side. As the car door continues to open, the engagement vanes 12A and 12B push the unlock roller 19 and the door opening / closing roller 20 toward the door-opening side, and the first door panel 2 moves to the right in FIG. 3. As a result, the first door panel 2 reaches the open position. At this time, the engagement vane 12B may abut against both the unlock roller 19 and the door opening / closing roller 20 on the door-opening side. The second door panel 3 moves to the left in FIG. 3 in conjunction with the first door panel 2, and reaches the open position. In this manner, the landing door 1 opens. While the engaging vanes 12A, 12B are engaged with the engaged portion 15, they do not come into contact with the bearing 16d of the first swing lever 16. This is because, as described above, the first swing lever 16 is disposed at a position farther from the car door than the second swing lever 17.

[0030] When the landing door 1 is closed, the other engagement vane 12B abuts against the unlock roller 19 and the door opening / closing roller 20, which are aligned in the vertical direction, on the door-opening side, and pushes the unlock roller 19 and the door opening / closing roller 20 toward the door-closing side. As a result, the first door panel 2 moves to the left in FIG. 3 and reaches the closed position. The second door panel 3 moves to the right in FIG. 3 in conjunction with the first door panel 2 and reaches the closed position. After the first door panel 2 reaches the closed position, the engagement vane 12A moves further toward the door-opening side, causing the first swing lever 16, the second swing lever 17, and the link member 18 to rotate counterclockwise in FIG. 2 due to the weights of the first swing lever 16, the second swing lever 17, and the link member 18. As a result, the above-mentioned protrusion 16c provided at the tip of the first swing lever 16 is inserted into the opening of the locked portion 14. In this way, the locking mechanism 13 is locked to the locked portion 14, and the landing door 1 is closed and locked.

[0031] Next, the first cover 30 according to this embodiment will be described with reference to FIGS.

[0032] 4 and 5, the first cover 30 constituting the engaged portion 15 covers the unlocking roller 19 and the door opening / closing roller 20. The first cover 30 is disposed on the side facing the car door relative to the unlocking roller 19 and the door opening / closing roller 20. Insertion spaces SA, SB into which the engaging vanes 12A, 12B can be inserted are formed on both lateral sides of the first cover 30. More specifically, the insertion space SA into which one engaging vane 12A can be inserted is formed on the left side of the first cover 30 in FIG. 4, and the insertion space SB into which the other engaging vane 12B can be inserted is formed on the right side of the first cover 30.

[0033] As shown in FIGS. 4 to 6, the first cover 30 according to this embodiment may include a first cover main body portion 30a, a first cover upper end portion 30b, and a first cover lower end portion 30c.

[0034] The first cover main body portion 30a is disposed on the side facing the car door with respect to the engaged portion 15. The first cover main body portion 30a covers the unlocking roller 19 and the door opening / closing roller 20. The first cover main body portion 30a faces the first door panel 2 and may be formed flat. As shown in FIGS. 5 and 6 , the first cover upper end portion 30b extends from the upper end of the first cover main body portion 30a toward the first door panel 2. The first cover upper end portion 30b may be inclined or perpendicular to the first cover main body portion 30a. The first cover lower end portion 30c extends from the lower end of the first cover main body portion 30a toward the first door panel 2. The first cover lower end portion 30c may be inclined or perpendicular to the first cover main body portion 30a. The first cover 30 may be manufactured as a single sheet metal part.

[0035] As shown in Fig. 6, a pair of corners 30p on the upper edge of the first cover upper end portion 30b may each be rounded. Alternatively, each of the corners 30p on the first cover upper end portion 30b may be chamfered. A pair of corners 30q on the lower edge of the first cover lower end portion 30c may each be rounded. Alternatively, each of the corners 30q on the first cover lower end portion 30c may be chamfered.

[0036] As shown in FIGS. 5 and 6 , the first mounting members 31 are members for mounting the first cover 30 to the first door panel 2. Each of the first mounting members 31 may be fixed to the surface of the first cover 30 facing the first door panel 2. For example, the first mounting members 31 may be welded to the first cover 30. For example, the first mounting members 31 may be formed in a U-shape when viewed from above. The first cover 30 may be mounted to the first door panel 2 by two first mounting members 31. In this case, the first mounting members 31 may be disposed at the upper and lower parts of the first cover main body portion 30a.

[0037] As shown in Fig. 6, the first mounting member 31 may include a first fastening seat 31a that is fastened to the first door panel 2 by a first fastening bolt 32. The first fastening seat 31a may include a bolt hole (not shown). The bolt hole may have a circular planar shape. The first fastening seat 31a may overlap the first cover main body portion 30a when viewed in the normal direction of the first door panel 2.

[0038] The first fastening bolt 32 fastens the first mounting member 31 to the first door panel 2. The first fastening bolt 32 may be inserted into a bolt hole (not shown) of the first mounting member 31 to fasten the first mounting member 31 to the first door panel 2.

[0039] As shown in Fig. 4, the first cover 30 according to this embodiment is disposed in a position that does not interfere with the engaging vanes 12A, 12B. More specifically, when viewed in the normal direction of the first door panel 2, the unlocking roller 19 and the door opening / closing roller 20 protrude from the first cover main body 30a of the first cover 30 toward the door closing side. This prevents the engaging vane 12A from contacting the first cover 30 when one of the engaging vanes 12A abuts against the unlocking roller 19 on the door closing side in the locked state. Even when the engaging vane 12A abuts against the unlocking roller 19 and the door opening / closing roller 20 on the door closing side in the unlocked state, the engaging vane 12A can be prevented from abutting against the first cover 30.

[0040] 4, when viewed in the normal direction of the first door panel 2, the unlocking roller 19 and the door opening / closing roller 20 protrude from the first cover main body 30a of the first cover 30 to the door opening side. This prevents the engaging vane 12B from contacting the first cover 30 even when the other engaging vane 12B contacts the unlocking roller 19 and the door opening / closing roller 20 on the door opening side.

[0041] As described above, according to this embodiment, the engaged portion 15 of the interlock 11 is covered by the first cover 30. This prevents long objects, such as a tail cord, present in the hoistway from coming into contact with the engaged portion 15 of the interlock 11. Furthermore, the first cover 30 is positioned so as not to interfere with the engaging vanes 12A, 12B. This prevents the engaging vanes 12A, 12B from coming into contact with the first cover 30, and maintains the function of the interlock 11. This prevents long objects from coming into contact with the interlock 11 and also prevents the interlock 11 from being unlocked.

[0042] Furthermore, according to the present embodiment, when viewed in the normal direction of the first door panel 2 of the landing door 1, the unlocking roller 19 and the door opening / closing roller 20 protrude from the first cover 30 toward the door closing side. As a result, when one of the engaging vanes 12A abuts against the unlocking roller 19 and the door opening / closing roller 20 on the door closing side, the engaging vane 12A can be prevented from contacting the first cover 30. Furthermore, the unlocking roller 19 and the door opening / closing roller 20 protrude from the first cover 30 toward the door opening side. As a result, when the other engaging vane 12B abuts against the unlocking roller 19 and the door opening / closing roller 20 on the door opening side, the engaging vane 12B can be prevented from contacting the first cover 30. This makes it possible to maintain the function of the interlock 11 and effectively prevent the interlock 11 from being unlocked.

[0043] Furthermore, according to this embodiment, the first cover 30 includes a first cover main body portion 30a, a first cover upper end portion 30b extending from the upper end of the first cover main body portion 30a toward the first door panel 2, and a first cover lower end portion 30c extending from the lower end of the first cover main body portion 30a toward the first door panel 2. This prevents a long object present in the elevator shaft from entering the space between the first cover 30 and the first door panel 2 from above, and also prevents the long object from entering the space between the first cover 30 and the first door panel 2 from below. This effectively prevents the long object from coming into contact with the engaged portion 15 of the interlock 11.

[0044] Furthermore, according to this embodiment, the interlock 11 includes a first mounting member 31 for mounting the first cover 30 to the first door panel 2, and a first fastening bolt 32 for fastening the first mounting member 31 to the first door panel 2. The first mounting member 31 is fixed to the surface of the first cover 30 facing the first door panel 2. This makes it possible to easily mount the first cover 30 to the first door panel 2 by fastening the first mounting member 31 to the first door panel 2 using the first fastening bolt 32. This improves the workability of mounting the first cover 30.

[0045] Furthermore, according to this embodiment, the locking mechanism 13 includes a first swing lever 16, a second swing lever 17, and a link member 18 that connects the first swing lever 16 and the second swing lever 17, and the engaged part 15 is attached to the second swing lever 17. As a result, even when the locking mechanism 13 is made up of two swing levers, it is possible to prevent a long object present in the elevator shaft from coming into contact with the engaged part 15 of the interlock 11 and to prevent the interlock 11 from being unlocked.

[0046] In the above-described embodiment, an example has been described in which a pair of engaging vanes 12A, 12B are attached to a car door (not shown), and one engaging vane 12A engages with the engaged portion 15 when the landing door 1 is opened, and the other engaging vane 12B engages with the engaged portion 15 when the landing door 1 is closed. However, the embodiment is not limited to this. For example, the car door may be provided with one engaging vane, which engages with the engaged portion 15 both when the landing door 1 is opened and when it is closed.

[0047] In the present embodiment described above, an example has been described in which the landing door 1 has a double-swing structure. However, the present embodiment is not limited to this. For example, the landing door 1 may have a single-swing structure. In this case, the interlock device 10 according to the present embodiment described above can also be applied. The same applies to the second and third embodiments described below.

[0048] (Second embodiment) Next, an elevator door interlock device according to a second embodiment will be described with reference to FIGS.

[0049] In the second embodiment shown in Figures 7 to 10, the interlock is different mainly in that it further includes a second cover, and other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 6. In Figures 7 to 10, the same parts as those in the first embodiment shown in Figures 1 to 6 are designated by the same reference numerals and detailed description thereof will be omitted.

[0050] The interlock 11 according to this embodiment further includes a second cover 40, a second mounting member 41, a second fastening bolt 42, a third mounting member 43, and a third fastening bolt 44.

[0051] As shown in Figures 7 and 8, the second cover 40 is disposed on the door-closing side (left side in Figure 7) of the first cover 30 when viewed in the normal direction of the first door panel 2. An insertion space SA into which one of the engaging vanes 12A can be inserted is formed on the left side of the first cover 30 in Figure 7. This insertion space SA is formed between the first cover 30 and the second cover 40. An insertion space SB into which the other engaging vane 12B can be inserted is formed on the right side of the first cover 30 in Figure 7. The second cover 40 is disposed on the door-opening side (right side in Figure 7) of the door stop surface of the first door panel 2. The second cover 40 does not protrude from the first door panel 2 toward the door-closing side.

[0052] The second cover 40 is disposed in a position that does not interfere with the engagement vanes 12A, 12B and the link member 18. The second cover 40 according to the present embodiment may include a second cover main body portion 40a, a second cover upper end portion 40b, a second cover lower end portion 40c, and a second cover side edge portion 40d.

[0053] The second cover main body portion 40a is disposed on the side of the first door panel 2 facing the car door. The second cover main body portion 40a faces the first door panel 2 and may be formed flat. The second cover upper end portion 40b extends from the upper end of the second cover main body portion 40a toward the first door panel 2. The second cover upper end portion 40b may be inclined or perpendicular to the second cover main body portion 40a. The second cover lower end portion 40c extends from the lower end of the second cover main body portion 40a toward the first door panel 2. The second cover lower end portion 40c may be inclined or perpendicular to the second cover main body portion 40a. The second cover side edge portion 40d is disposed on the opposite side of the second cover main body portion 40a from the first cover 30 (the door-closing side, the left side in FIG. 7 ) and extends from the side edge of the second cover main body portion 40a toward the first door panel 2. The second cover side edge 40d can be formed in the same manner as the third cover side edge 50d described later. The second cover 40 may be fabricated as a single sheet metal part. The second cover 40 may have a shape that is a left-right inversion of the third cover 50 described later.

[0054] As shown in FIG. 8, a pair of corners 40p on the upper edge of the second cover upper end 40b may each be rounded. Alternatively, each of the corners 40p on the second cover upper end 40b may be chamfered. Of the pair of corners 40p, the corner 40p on the door-closing side may not be rounded or chamfered. A pair of corners 40q on the lower edge of the second cover lower end 40c may each be rounded. Alternatively, each of the corners 40q on the second cover lower end 40c may be chamfered. Of the pair of corners 40q, the corner 40q on the door-closing side may not be rounded or chamfered.

[0055] As shown in FIG. 8, the second mounting member 41 is a member for mounting the second cover 40 to the first door panel 2. The second mounting member 41 may be fixed to the surface of the second cover 40 on the side facing the first door panel 2. For example, the second mounting member 41 may be welded to the second cover 40. For example, the second mounting member 41 may be formed in a U-shape. The second mounting member 41 may be disposed on an upper portion of the second cover main body portion 40a.

[0056] 9, the second mounting member 41 may include a second fastening seat 41a that is fastened to the first door panel 2 by a second fastening bolt 42. The second fastening seat 41a may include a bolt hole 41b. The bolt hole 41b may be formed in a U-shape, extending to the lower edge of the second fastening seat 41a. In this case, after the second fastening bolt 42 is threaded into a screw hole (not shown) in the first door panel 2, the second fastening seat 41a of the second mounting member 41 can be inserted from above, improving the ease of mounting the second mounting member 41.

[0057] 9, the second mounting member 41 may overlap the second cover main body portion 40a when viewed in the normal direction of the first door panel 2. The second fastening seat 41a may overlap the second cover main body portion 40a. In this case, the second cover 40 may include an access hole 40e. The access hole 40e is formed in the second cover main body portion 40a and allows a tool for fastening the second fastening bolt 42 to be inserted therein.

[0058] 8 and 9, the second fastening bolt 42 fastens the second mounting member 41 to the first door panel 2. The second fastening bolt 42 may be inserted into the bolt hole 41b of the second mounting member 41, thereby fastening the second mounting member 41 to the first door panel 2.

[0059] The third mounting member 43 is a member for mounting the second cover 40 to the first door panel 2. The third mounting member 43 may be fixed to the surface of the second cover 40 on the side facing the first door panel 2. For example, the third mounting member 43 may be welded to the second cover 40. For example, the third mounting member 43 may be formed in a crank shape. The third mounting member 43 may be disposed at the lower part of the second cover main body portion 40a.

[0060] As shown in FIGS. 7 and 8 , the third mounting member 43 may include a third fastening seat 43a that is fastened to the first door panel 2 by a third fastening bolt 44. The third fastening seat 43a may include a bolt hole (not shown). The planar shape of the bolt hole may be circular. The third fastening seat 43a may be exposed from the second cover 40 when viewed in the normal direction of the first door panel 2. The third fastening seat 43a may be disposed between the first cover 30 and the second cover 40. The portion of the third mounting member 43 other than the third fastening seat 43a may overlap the second cover 40.

[0061] The third fastening bolt 44 fastens the third mounting member 43 to the first door panel 2. The third fastening bolt 44 may be inserted into a bolt hole (not shown) of the third mounting member 43, thereby fastening the third mounting member 43 to the first door panel 2.

[0062] 10(a) and 10(b), the height h1 of the head 44h of the third fastening bolt 44 may be smaller than the height h2 of the head 42h of the second fastening bolt 42. The corners of the head 44h of the third fastening bolt 44 may be rounded. Alternatively, the corners of the head 44h of the third fastening bolt 44 may be chamfered.

[0063] As described above, according to this embodiment, the interlock 11 includes the second cover 40 disposed on the door-closed side of the first cover 30 when viewed in the normal direction of the first door panel 2. This allows the second cover 40 to prevent a long object present in the elevator shaft from entering the space between the first cover 30 and the first door panel 2 from the door-open side. This further prevents the long object from contacting the engaged portion 15 of the interlock 11. Furthermore, the second cover 40 is disposed in a position that does not interfere with the engaging vanes 12A, 12B and the link member 18. This prevents the engaging vanes 12A, 12B from contacting the second cover 40, thereby maintaining the function of the interlock 11. This prevents the long object from contacting the interlock 11 and prevents the interlock 11 from being unlocked.

[0064] Furthermore, according to this embodiment, the second cover 40 includes a second cover main body portion 40a and a second cover side edge portion 40d that is disposed on the door-closed side of the second cover main body portion 40a and extends from a side edge portion of the second cover main body portion 40a toward the first door panel 2. This prevents long objects present in the elevator shaft from entering the space between the second cover 40 and the first door panel 2 from the door-closed side. It also prevents long objects from coming into contact with the link member 18.

[0065] Furthermore, according to this embodiment, the interlock 11 includes a second mounting member 41 for mounting the second cover 40 to the first door panel 2, and a second fastening bolt 42 for fastening the second mounting member 41 to the first door panel 2. The second mounting member 41 is fixed to the surface of the second cover 40 facing the first door panel 2. This makes it possible to easily mount the second cover 40 to the first door panel 2 by fastening the second mounting member 41 to the first door panel 2 using the second fastening bolt 42. This improves the workability of mounting the second cover 40.

[0066] Furthermore, according to this embodiment, the second mounting member 41 overlaps the second cover main body portion 40a when viewed in the normal direction of the first door panel 2, and the second cover main body portion 40a includes an access hole 40e into which a tool can be inserted for fastening the third fastening bolt 44. This makes it possible to easily mount the second mounting member 41 to the first door panel 2 even when the space for mounting the second mounting member 41 to the first door panel 2 is limited. This improves the ease of mounting the second cover 40.

[0067] Furthermore, according to this embodiment, the interlock 11 includes a third mounting member 43 for mounting the second cover 40 to the first door panel 2 and a third fastening bolt 44 for fastening the third mounting member 43 to the first door panel 2. The third mounting member 43 is fixed to the surface of the second cover 40 facing the first door panel 2. The third mounting member 43 includes a third fastening seat 43a fastened to the first door panel 2 by the third fastening bolt 44, and the third fastening seat 43a is exposed from the second cover 40 when viewed in the normal direction of the first door panel 2. The height of the head 44h of the third fastening bolt 44 is lower than the height of the head 42h of the second fastening bolt 42. This reduces the possibility that a long object present in the elevator shaft will come into contact with the third fastening bolt 44 exposed from the second cover 40. This prevents the long object from coming into contact with the engaged portion 15 of the interlock 11.

[0068] (Third embodiment) Next, an elevator door interlock device according to a third embodiment will be described with reference to FIGS.

[0069] 11 and 12, the main difference is that the interlock further includes a third cover, and other configurations are substantially the same as those of the second embodiment shown in Figures 7 to 10. In Figures 11 and 12, the same parts as those of the second embodiment shown in Figures 7 to 10 are designated by the same reference numerals, and detailed description thereof will be omitted.

[0070] The interlock 11 according to the present embodiment further includes a third cover 50, a fourth mounting member 51, a fourth fastening bolt 52, a fifth mounting member 53, and a fifth fastening bolt .

[0071] 11 and 12, when viewed in the normal direction of the first door panel 2, the third cover 50 is disposed on the door-opening side (the right side in FIG. 11) of the first cover 30. An insertion space SA into which one engaging vane 12A can be inserted is formed on the left side of the first cover 30 in FIG. 11. This insertion space SA is formed between the first cover 30 and the second cover 40. An insertion space SB into which the other engaging vane 12B can be inserted is formed on the right side of the first cover 30 in FIG. 11. This insertion space SB is formed between the first cover 30 and the third cover 50.

[0072] The third cover 50 is disposed in a position that does not interfere with the engaging vanes 12A, 12B. The third cover 50 according to the present embodiment may include a third cover main body portion 50a, a third cover upper end portion 50b, a third cover lower end portion 50c, and a third cover side edge portion 50d.

[0073] The third cover main body portion 50a is disposed on the side of the first door panel 2 facing the car door. The third cover main body portion 50a faces the first door panel 2 and may be formed flat. The third cover upper end portion 50b extends from the upper end of the third cover main body portion 50a toward the first door panel 2. The third cover upper end portion 50b may be inclined or perpendicular to the third cover main body portion 50a. The third cover lower end portion 50c extends from the lower end of the third cover main body portion 50a toward the first door panel 2. The third cover lower end portion 50c may be inclined or perpendicular to the third cover main body portion 50a. The third cover side edge portion 50d is disposed on the opposite side of the third cover main body portion 50a from the first cover 30 (the door-opening side, the right side in FIG. 11 ) and extends from the side edge of the third cover main body portion 50a toward the first door panel 2. The third cover 50 may be manufactured as a single sheet metal part. The third cover 50 may have a shape obtained by mirror-inverting the second cover 40 described above.

[0074] As shown in FIG. 12 , a pair of corners 50p on the upper edge of the third cover upper end 50b may be rounded. Alternatively, each of the corners 50p on the third cover upper end 50b may be chamfered. Of the pair of corners 50p, the corner 50p on the door-opening side may not be rounded or chamfered. A pair of corners 50q on the lower edge of the third cover lower end 50c may be rounded. Alternatively, each of the corners 50q on the third cover lower end 50c may be chamfered. Of the pair of corners 50q, the corner 50q on the door-opening side may not be rounded or chamfered.

[0075] 12, the fourth mounting member 51 is a member for mounting the third cover 50 to the first door panel 2. The fourth mounting member 51 may be fixed to the surface of the third cover 50 on the side facing the first door panel 2. For example, the fourth mounting member 51 may be welded to the third cover 50. For example, the fourth mounting member 51 may be formed in a U-shape. The fourth mounting member 51 may be disposed on the upper part of the third cover main body portion 50a.

[0076] 12, the fourth mounting member 51 may include a fourth fastening seat 51a that is fastened to the first door panel 2 by a fourth fastening bolt 52. The fourth fastening seat 51a may include a bolt hole (not shown). The bolt hole of the fourth fastening seat 51a may be formed in a U-shape, similar to the bolt hole 41b of the second fastening seat 41a shown in FIG.

[0077] 12, the fourth mounting member 51 may overlap the third cover main body portion 50a when viewed in the normal direction of the first door panel 2. The fourth fastening seat 51a may overlap the third cover main body portion 50a. In this case, the third cover 50 may include an access hole 50e. A tool for fastening the fourth fastening bolt 52 can be inserted into the access hole 50e.

[0078] 11 and 12 , the fourth fastening bolt 52 fastens the fourth mounting member 51 to the first door panel 2. The fourth fastening bolt 52 may be inserted into a bolt hole in the fourth mounting member 51, thereby fastening the fourth mounting member 51 to the first door panel 2.

[0079] The fifth mounting member 53 is a member for mounting the third cover 50 to the first door panel 2. The fifth mounting member 53 may be fixed to a surface of the third cover 50 on the side facing the first door panel 2. For example, the fifth mounting member 53 may be welded to the third cover 50. For example, the fifth mounting member 53 may be formed in a crank shape. The fifth mounting member 53 may be disposed at the lower part of the third cover main body portion 50a.

[0080] As shown in FIG. 12 , the fifth mounting member 53 may include a fifth fastening seat 53a that is fastened to the first door panel 2 by a fifth fastening bolt 54. The fifth fastening seat 53a may include a bolt hole (not shown). The planar shape of the bolt hole may be circular. The fifth fastening seat 53a may be exposed from the third cover 50 when viewed in the normal direction of the first door panel 2. The fifth fastening seat 53a is disposed between the first cover 30 and the third cover 50. The portion of the fifth mounting member 53 other than the fifth fastening seat 53a may overlap the third cover 50.

[0081] The fifth fastening bolt 54 fastens the fifth mounting member 53 to the first door panel 2. The fifth fastening bolt 54 may be inserted into a bolt hole (not shown) of the fifth mounting member 53, thereby fastening the fifth mounting member 53 to the first door panel 2.

[0082] The third cover 50 according to the present embodiment may be formed symmetrically with the second cover 40 described above. However, the third cover 50 may be formed asymmetrically with the second cover 40. The fourth mounting member 51 and the fifth mounting member 53 may be formed symmetrically with the second mounting member 41 and the third mounting member 43 described above. However, the fourth mounting member 51 and the fifth mounting member 53 may be formed asymmetrically with the second mounting member 41 and the third mounting member 43 described above.

[0083] Although not shown, similar to the second fastening bolt 42 and the third fastening bolt 44 described above, the height of the head of the fifth fastening bolt 54 may be lower than the height of the head of the fourth fastening bolt 52. The corners of the head of the fifth fastening bolt 54 may be rounded, similar to the third fastening bolt 44. Alternatively, the corners of the head of the fifth fastening bolt 54 may be chamfered.

[0084] As described above, according to this embodiment, the interlock 11 includes the third cover 50 disposed on the door-opening side of the first cover 30 when viewed in the normal direction of the first door panel 2. This allows the third cover 50 to prevent a long object present in the elevator shaft from entering the space between the first cover 30 and the first door panel 2 from the door-opening side. This further prevents the long object from contacting the engaged portion 15 of the interlock 11. Furthermore, the third cover 50 is disposed in a position that does not interfere with the engaging vanes 12A, 12B. This prevents the engaging vanes 12A, 12B from contacting the third cover 50, thereby maintaining the function of the interlock 11. This prevents the long object from contacting the interlock 11 and prevents the interlock 11 from being unlocked.

[0085] Furthermore, according to this embodiment, the third cover 50 includes a third cover main body portion 50a and a third cover side edge portion 50d that is disposed on the door-opening side of the third cover main body portion 50a and extends from a side edge portion of the third cover main body portion 50a toward the first door panel 2. This prevents long objects present in the elevator shaft from entering the space between the third cover 50 and the first door panel 2 from the door-opening side.

[0086] According to the embodiment described above, it is possible to prevent long objects present in the elevator shaft from coming into contact with the interlock 11, and also to prevent the interlock 11 from being unlocked.

[0087] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0088] 1: landing door, 2: first door panel, 3: second door panel, 10: interlock device, 11: interlock, 12A, 12B: engaging vane, 13: locking mechanism, 14: engaged portion, 15: engaged portion, 16: first swing lever, 17: second swing lever, 18: link member, 19: unlocking roller, 20: door opening / closing roller, 30: first cover, 30a: first cover main body, 30b: first cover upper end, 30c: 1. Lower end of cover, 31: first mounting member, 32: first fastening bolt, 40: second cover, 40a: second cover main body, 40d: second cover side edge, 40e: working hole, 41: second mounting member, 42: second fastening bolt, 42h: head, 43: third mounting member, 43a: third fastening seat, 44: third fastening bolt, 44h: head, 50: third cover, 50a: third cover main body, 50d: third cover side edge, 53: fifth mounting member

Claims

1. An interlock device for locking a landing door interlocked with an elevator car door, an interlock that locks the landing door; an engagement member provided on the car door and configured to unlock the landing door, the interlock includes a locking mechanism that sets the landing door in a locked state and an unlocked state, an engaged portion that engages the locking mechanism in the locked state, an engaged portion that engages with the engaging member to set the locking mechanism in the unlocked state and open / close the landing door, and a first cover that covers the engaged portion, The first cover is disposed at a position where it does not interfere with the engaging member. Elevator door interlock device.

2. the engaged portion includes an unlocking member with which the engaging member abuts to bring the locking mechanism into the unlocked state, and a door opening / closing member with which the engaging member abuts to open and close the landing door, When viewed in a normal direction of the landing door, the lock release member and the door opening / closing member protrude from the first cover to a door closing side and also protrude from the first cover to a door opening side.

2. The elevator door interlock device of claim 1.

3. the first cover includes a first cover main body portion disposed on a side facing the car door with respect to the engaged portion, a first cover upper end portion extending from an upper end portion of the first cover main body portion toward the landing door, and a first cover lower end portion extending from a lower end portion of the first cover main body portion toward the landing door.

3. The elevator door interlock device according to claim 1 or 2.

4. the interlock includes a first attachment member for attaching the first cover to the landing door, and a first fastening bolt for fastening the first attachment member to the landing door, The first mounting member is fixed to a surface of the first cover on a side of the landing door.

3. The elevator door interlock device according to claim 1 or 2.

5. the locking mechanism includes a first swing lever that is swingably provided on a door hanger attached to the landing door and that is locked to the locked portion in the locked state, a second swing lever that is swingably provided on the landing door, and a link member that connects the first swing lever and the second swing lever, The engaged portion is provided on the second rocking lever.

3. The elevator door interlock device according to claim 1 or 2.

6. The link member is disposed on the door closing side with respect to the engaged portion, the interlock includes a second cover disposed on a door-closing side with respect to the first cover when viewed in a normal direction of the landing door, The second cover is disposed at a position where it does not interfere with the engaging member and the link member.

6. The elevator door interlock device according to claim 5.

7. the second cover includes a second cover main body portion disposed on a side facing the car door with respect to the landing door, and a second cover side edge portion disposed on a door-closing side with respect to the second cover main body portion and extending from a side edge portion of the second cover main body portion toward the landing door, 7. The elevator door interlock device according to claim 6.

8. the interlock includes a second mounting member for mounting the second cover to the landing door, and a second fastening bolt for fastening the second mounting member to the landing door, The second mounting member is fixed to a surface of the second cover on a side of the landing door.

7. The elevator door interlock device according to claim 6.

9. the second mounting member overlaps the second cover when viewed in a normal direction of the landing door, The second cover includes a work hole into which a tool for fastening the second fastening bolt can be inserted.

9. The elevator door interlock device of claim 8.

10. the interlock includes a third mounting member for mounting the second cover to the landing door, and a third fastening bolt for fastening the third mounting member to the landing door, the third mounting member is fixed to a surface of the second cover on a side of the landing door, the third mounting member includes a fastening seat fastened to the landing door by the third fastening bolt, the fastening seat is exposed from the second cover when viewed in a normal direction of the landing door, The height of the head of the third fastening bolt is lower than the height of the head of the second fastening bolt.

9. The elevator door interlock device of claim 8.

11. the interlock includes a third cover disposed on a door-opening side with respect to the first cover when viewed in a normal direction of the landing door, The third cover is disposed at a position where it does not interfere with the engaging member.

7. The elevator door interlock device according to claim 6.

12. the third cover includes a third cover main body portion disposed on a side facing the car door with respect to the landing door, and a third cover side edge portion disposed on a door-opening side with respect to the third cover main body portion and extending from a side edge portion of the third cover main body portion toward the landing door, 12. The elevator door interlock device of claim 11.

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