Elevator landing door device

Abstract

Provided is a landing door device which is for an elevator and is capable of improving work efficiency for limiting the movement of the landing door in the door closing direction. This landing door device for an elevator comprises a landing door, a latch receiving member provided in a wall of a hoistway, and a latch provided in the landing door and hooked onto the latch receiving member, thereby limiting the movement of the landing door in the door closing direction. When the landing door moves with a car door, the landing door moves between a door closed position where the landing doorway is closed and a door open position where the landing doorway is open. When the landing door separately from the car door, the landing door moves between the door closed position and a door open lock position where the landing door has moved from the door open position by a previously set distance in the door opening direction. When the landing door is in the door open lock position, the latch is hooked onto the latch receiving member.

Description

[Technical Field]

[0001] The present disclosure relates to an elevator landing door device. [Background technology]

[0002] Conventionally, there has been known an elevator landing door device that includes a landing door and a door stopper device provided on a wall of a hoistway. The door stopper device has a rotation shaft, a door receiving member that rotates around the rotation shaft, and a stopper operation key. The rotation shaft has a keyhole into which the stopper operation key is inserted. When the stopper operation key is inserted into the keyhole and the stopper operation key is operated, the door receiving member restricts the landing door, which is in the door-open position, from moving in the door-closing direction (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-189726 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration described in Patent Document 1, in order for the door receiving member to restrict the movement of the landing door in the door-closing direction, an operator must move the landing door from the door-closing position to the door-opening position, insert the stopper operation key into the keyhole, and operate the stopper operation key. Therefore, there has been a problem in that the work efficiency for restricting the movement of the landing door in the door-closing direction is poor.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an elevator landing door device that can improve the work efficiency for restricting the movement of the landing door in the door-closing direction. [Means for solving the problem]

[0006] The elevator landing door device according to the present disclosure includes a landing door, a latch receiving member provided on a wall of a hoistway, and a latch provided on the landing door that restricts movement of the landing door in a door-closing direction by engaging with the latch receiving member, and when the landing door moves together with the car door, the landing door moves between a door-closed position where a landing doorway is closed and a door-opened doorway where the landing door opens, and when the landing door moves separately from the car door, the landing door moves between the door-closed position and a door-opened lock position moved a preset distance in the door-opening direction from the door-opened position, and when the landing door is in the door-opened lock position, the latch engages with the latch receiving member. When the landing door is in the door-open lock position and is pushed in the door-open direction, the latch is released from the latch receiving member, and when the landing door moves from the door-close position to the door-open lock position, the latch is engaged with the latch receiving member. do. [Effects of the Invention]

[0007] According to the elevator landing door device of the present disclosure, it is possible to improve the work efficiency for restricting the landing door from moving in the door closing direction. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view showing an elevator landing door device according to a first embodiment. [Figure 2] FIG. 2 is a rear view showing the elevator landing door device of FIG. 1. [Figure 3] FIG. 3 is a rear view showing a state in which the landing door of FIG. 2 is in the door open position. [Figure 4] FIG. 3 is a rear view showing a state in which the landing door of FIG. 2 is in a door-open lock position. [Figure 5] FIG. 10 is a rear view showing an elevator hall door device according to a second embodiment. [Figure 6] FIG. 6 is a rear view showing a state in which the landing door of FIG. 5 is in a door-open lock position. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 Fig. 1 is a front view showing an elevator landing door apparatus according to embodiment 1. Fig. 2 is a rear view showing the elevator landing door apparatus of Fig. 1. The elevator landing door apparatus according to embodiment 1 includes a first landing door 1, a second landing door 2, a hanger case 3, a door rail 4, a first door hanger 5, a second door hanger 6, a pair of first hanger rollers 7, and a pair of second hanger rollers 8. The elevator landing door apparatus according to embodiment 1 also includes a landing threshold 9, a first latch receiving member 10, a second latch receiving member 11, a first latch 12, and a second latch 13.

[0010] A landing entrance 141 is formed in the elevator shaft wall 14. The first landing door 1 and the second landing door 2 are each a landing door. The first landing door 1 and the second landing door 2 open and close the landing entrance 141.

[0011] The elevator landing door device according to the first embodiment is a center-opening elevator landing door device. The first landing door 1 and the second landing door 2 each move in the width direction D of the landing entrance 141. The first landing door 1 and the second landing door 2 are connected to each other via an interlocking rope (not shown). Therefore, the first landing door 1 and the second landing door 2 move at the same time.

[0012] When the landing entrance 141 is closed by the first landing door 1 and the second landing door 2, half of the landing entrance 141 in the width direction D of the landing entrance 141 is closed by the first landing door 1. Furthermore, when the landing entrance 141 is closed by the first landing door 1 and the second landing door 2, the other half of the landing entrance 141 in the width direction D of the landing entrance 141 is closed by the second landing door 2.

[0013] When the landing entrance 141 is closed by the first landing door 1 and the second landing door 2, the positions of the first landing door 1 and the second landing door 2 are defined as door-closed positions.

[0014] Fig. 3 is a rear view showing a state in which the first landing door 1 and the second landing door 2 in Fig. 2 are in the door-open position. The positions of the first landing door 1 and the second landing door 2 when the landing entrance 141 is open are defined as the door-open position.

[0015] When a car (not shown) is stopped at a floor where the first landing door 1 and the second landing door 2 are installed, the car door (not shown) moves while being connected to the first landing door 1 and the second landing door 2 via a connecting member (not shown). Therefore, in this case, each of the first landing door 1 and the second landing door 2 moves together with the car door. As shown in Fig. 2 and Fig. 3 , when each of the first landing door 1 and the second landing door 2 moves together with the car door, each of the first landing door 1 and the second landing door 2 moves between a door-closed position and a door-open position.

[0016] The direction in which the landing door moves from the door-closed position to the door-opened position is defined as the door-opening direction, and the direction in which the landing door moves from the door-opened position to the door-closing direction is defined as the door-closing direction. Therefore, in Fig. 2 and Fig. 3, the rightward direction is the door-opening direction of the first landing door 1 and the door-closing direction of the second landing door 2. Also, in Fig. 2 and Fig. 3, the leftward direction is the door-opening direction of the second landing door 2 and the door-closing direction of the first landing door 1.

[0017] Fig. 4 is a rear view showing a state in which each of the first landing door 1 and the second landing door 2 in Fig. 2 is in the door-open lock position. For each of the first landing door 1 and the second landing door 2, the door-open lock position is a position moved a preset distance in the door-open direction from the door-open position.

[0018] When the car is stopped at a floor different from the floor on which the first landing door 1 and the second landing door 2 are installed, each of the first landing door 1 and the second landing door 2 moves while being separated from the car door. As shown in Fig. 2 and Fig. 4 , when each of the first landing door 1 and the second landing door 2 moves while being separated from the car door, each of the first landing door 1 and the second landing door 2 moves between a door-closed position and a door-open locked position.

[0019] The hanger case 3 is fixed to the wall 14 of the elevator shaft. The hanger case 3 is arranged along the width direction D of the landing entrance 141.

[0020] The door rail 4 is fixed to the hanger case 3. The door rail 4 is arranged along the width direction D of the landing entrance 141.

[0021] The first door hanger 5 is attached to an upper portion of the first landing door 1. Each of the pair of first hanger rollers 7 is rotatably provided on the first door hanger 5. The pair of first hanger rollers 7 are arranged spaced apart from each other in the width direction D of the landing entrance 141. Each of the pair of first hanger rollers 7 is placed on the door rail 4. The first landing door 1 is supported on the door rail 4 via the first door hanger 5 and the pair of first hanger rollers 7. As the pair of first hanger rollers 7 roll on the door rail 4, the first landing door 1 moves in the width direction D of the landing entrance 141.

[0022] The second door hanger 6 is attached to an upper part of the second landing door 2. Each of the pair of second hanger rollers 8 is rotatably provided on the second door hanger 6. The pair of second hanger rollers 8 are arranged spaced apart from each other in the width direction D of the landing entrance 141. Each of the pair of second hanger rollers 8 is placed on the door rail 4. The second landing door 2 is supported on the door rail 4 via the second door hanger 6 and the pair of second hanger rollers 8. As the pair of second hanger rollers 8 roll on the door rail 4, the second landing door 2 moves in the width direction D of the landing entrance 141.

[0023] The landing threshold 9 is fixed to the wall 14 of the elevator shaft. The landing threshold 9 forms the bottom surface of the landing entrance 141. A threshold groove (not shown) is formed on the upper surface of the landing threshold 9. The threshold groove of the landing threshold 9 is aligned with the width direction D of the landing entrance 141. The lower ends of the first landing door 1 and the second landing door 2 are inserted into the threshold groove of the landing threshold 9 from above. This restricts movement of the first landing door 1 and the second landing door 2 in the depth direction of the landing entrance 141. The depth direction of the landing entrance 141 is a direction perpendicular to the width direction D of the landing entrance 141 when viewed from above.

[0024] Each of the first latch receiving member 10 and the second latch receiving member 11 is a latch receiving member provided on a hoistway wall 14. In the elevator landing door device according to the first embodiment, each of the first latch receiving member 10 and the second latch receiving member 11 is provided on the hoistway wall 14 via a hanger case 3. Note that each of the first latch receiving member 10 and the second latch receiving member 11 may also be attached to the hoistway wall 14 without the hanger case 3. In this case, holes for attaching each of the first latch receiving member 10 and the second latch receiving member 11 are formed in the hoistway wall 14.

[0025] The first latch 12 and the second latch 13 are each a latch provided on a landing door. The first latch 12 is provided on the first landing door 1. The first latch 12 may be provided on the first landing door 1 via a first door hanger 5. The second latch 13 is provided on the second landing door 2. The second latch 13 may be provided on the second landing door 2 via a second door hanger 6.

[0026] When the first latch 12 engages with the first latch receiving member 10, the first latch 12 restricts the first landing door 1 from moving in the door-closing direction. When the second latch 13 engages with the second latch receiving member 11, the second latch 13 restricts the second landing door 2 from moving in the door-closing direction.

[0027] The first latch 12 and the first latch receiving member 10 are arranged so that the first latch 12 engages with the first latch receiving member 10 when the first landing door 1 is in the door open lock position. The second latch 13 and the second latch receiving member 11 are arranged so that the second latch 13 engages with the second latch receiving member 11 when the second landing door 2 is in the door open lock position.

[0028] When the first landing door 1 is in the door open lock position, the first latch 12 is released from engagement with the first latch receiving member 10 by pushing the first landing door 1 in the door opening direction of the first landing door 1.

[0029] An example of a configuration in which the engagement of the first latch 12 with the first latch receiving member 10 is released is a configuration in which the first landing door 1 is pushed in the door-opening direction, causing the first latch 12 to shift in the depth direction of the landing entrance 141 with respect to the first latch receiving member 10. The first latch 12 shifts in the depth direction of the landing entrance 141 with respect to the first latch receiving member 10, causing the engagement of the first latch 12 with the first latch receiving member 10 to be released, and the first landing door 1 becomes movable in the door-closing direction.

[0030] When the second landing door 2 is in the door open lock position, the second landing door 2 is pushed in the door opening direction of the second landing door 2, whereby the engagement of the second latch 13 with the second latch receiving member 11 is released.

[0031] An example of a configuration in which the engagement of the second latch 13 with the second latch receiving member 11 is released is a configuration in which the second landing door 2 is pushed in the door-opening direction, causing the second latch 13 to shift relative to the second latch receiving member 11 in the depth direction of the landing entrance 141. The second latch 13 shifts relative to the second latch receiving member 11 in the depth direction of the landing entrance 141, causing the engagement of the second latch 13 with the second latch receiving member 11 to be released, and the second landing door 2 becomes movable in the door-closing direction.

[0032] Next, a procedure for operating the elevator landing door device according to the first embodiment to open the landing entrance 141, maintain the landing entrance 141 in an open state, and close the landing entrance 141 will be described. First, the worker stops the car at a floor different from the floors where the first landing door 1 and the second landing door 2 are installed. After that, the worker pushes each of the first landing door 1 and the second landing door 2 in the door-opening direction to move each of the first landing door 1 and the second landing door 2 from the door-closed position to the door-open locked position.

[0033] When the position of the first landing door 1 is in the door-open lock position, the first latch 12 is engaged with the first latch receiving member 10. This restricts the first landing door 1 from moving in the door-closing direction from the door-open lock position. As a result, the position of the first landing door 1 is maintained in the door-open lock position.

[0034] When the position of the second landing door 2 is in the door-open lock position, the second latch 13 is engaged with the second latch receiving member 11. This restricts the second landing door 2 from moving in the door-closing direction from the door-open lock position. As a result, the position of the second landing door 2 is maintained in the door-open lock position.

[0035] The first landing door 1 and the second landing door 2 are maintained in the door open lock position, thereby maintaining the landing entrance 141 in an open state. This allows workers to perform elevator maintenance and inspection work by standing on the ceiling of the car, and also allows workers to enter a pit (not shown) to perform elevator maintenance and inspection work.

[0036] After the elevator maintenance and inspection work is completed, the worker pushes each of the first landing door 1 and the second landing door 2 in the door-open direction. This releases the first latch 12 from the first latch receiving member 10, and releases the second latch 13 from the second latch receiving member 11. This moves each of the first landing door 1 and the second landing door 2 from the door-open lock position to the door-closed position. This completes the procedure for opening the landing entrance 141, maintaining the landing entrance 141 in an open state, and closing the landing entrance 141.

[0037] As described above, the elevator landing door device according to the first embodiment includes the first landing door 1, the first latch receiving member 10, and the first latch 12. The first latch receiving member 10 is provided on the hoistway wall 14. The first latch 12 is provided on the first landing door 1. When the first latch 12 engages with the first latch receiving member 10, the first latch 12 restricts the first landing door 1 from moving in the door-closing direction. When the first landing door 1 moves together with the car door, the first landing door 1 moves between the door-closed position and the door-open position. When the first landing door 1 moves separately from the car door, the first landing door 1 moves between the door-closed position and the door-open locked position. When the first landing door 1 is in the door-open locked position, the first latch 12 engages with the first latch receiving member 10. According to this configuration, by an operator moving the first landing door 1 from the door-closed position to the door-open locked position, it is possible to restrict the first landing door 1, which is in the door-open locked position, from moving in the door-closing direction. This makes it possible to improve the efficiency of the work to restrict the first landing door 1 from moving in the door-closing direction, compared to a configuration in which a stopper operation key is inserted into a keyhole to move the door receiving member.

[0038] Moreover, the elevator landing door device according to the first embodiment includes a second landing door 2, a second latch receiving member 11, and a second latch 13. The second latch receiving member 11 is provided on a wall 14 of the elevator shaft. The second latch 13 is provided on the second landing door 2. When the second latch 13 engages with the second latch receiving member 11, the second latch 13 restricts the second landing door 2 from moving in the door-closing direction. When the second landing door 2 moves together with the car door, the second landing door 2 moves between a door-closed position and a door-open position. When the second landing door 2 moves separately from the car door, the second landing door 2 moves between a door-closed position and a door-open locked position. When the second landing door 2 is in the door-open locked position, the second latch 13 engages with the second latch receiving member 11. According to this configuration, by an operator moving the second landing door 2 from the door closed position to the door open locked position, it is possible to restrict the second landing door 2, which is in the door open locked position, from moving in the door closing direction. This makes it possible to improve the work efficiency for restricting the second landing door 2 from moving in the door closing direction, compared to a configuration in which a stopper operation key is inserted into a keyhole to move the door receiving member.

[0039] Furthermore, in the elevator landing door device according to the first embodiment, when the first landing door 1 is in the door-open lock position, the first latch 12 is released from engagement with the first latch receiving member 10 by pushing the first latch 12 in the door-open direction. According to this configuration, an operator can move the first landing door 1, which is in the door-open lock position, in the door-closing direction by pushing the first landing door 1 in the door-open direction. This improves the work efficiency for releasing the restriction on the movement of the first landing door 1 in the door-closing direction, compared to a configuration in which a stopper operation key is inserted into a keyhole to move the door receiving member.

[0040] Furthermore, in the elevator landing door device according to the first embodiment, when the second landing door 2 is in the door-open lock position, the second latch 13 is pushed in the door-open direction, thereby releasing the engagement of the second latch 13 with the second latch receiving member 11. According to this configuration, an operator can move the second landing door 2, which is in the door-open lock position, in the door-closing direction by pushing the second landing door 2 in the door-open direction. This improves the work efficiency for releasing the restriction on the movement of the second landing door 2 in the door-closing direction, compared to a configuration in which a stopper-operation key is inserted into a keyhole to move the door receiving member.

[0041] Furthermore, in the elevator landing door device according to the first embodiment, the first latch receiving member 10 is provided on the hoistway wall 14 via the hanger case 3. With this configuration, the first latch receiving member 10 can be provided on the hoistway wall 14 without forming a hole in the hoistway wall 14 for attaching the first latch receiving member 10.

[0042] Furthermore, in the elevator landing door device according to the second embodiment, the second latch receiving member 11 is provided on the hoistway wall 14 via the hanger case 3. With this configuration, the second latch receiving member 11 can be provided on the hoistway wall 14 without forming a hole in the hoistway wall 14 for attaching the second latch receiving member 11.

[0043] Embodiment 2 Fig. 5 is a rear view showing an elevator landing door device according to embodiment 2. Fig. 6 is a rear view showing a state in which the landing door of Fig. 5 is in the door-open lock position. In the elevator landing door device according to embodiment 2, each of the first latch receiving member 10 and the second latch receiving member 11 is provided on a hoistway wall 14 via a landing threshold 9.

[0044] Other configurations of the elevator hall door device according to the second embodiment are the same as those of the elevator hall door device according to the first embodiment.

[0045] As described above, in the elevator hall door apparatus according to the second embodiment, the first latch receiving member 10 is provided on the hoistway wall 14 via the hall threshold 9. According to this configuration, the first latch receiving member 10 can be provided on the hoistway wall 14 without forming a hole in the hoistway wall 14 for attaching the first latch receiving member 10.

[0046] Furthermore, in the elevator hall door apparatus according to the second embodiment, the second latch receiving member 11 is provided on the hoistway wall 14 via the hall threshold 9. With this configuration, the second latch receiving member 11 can be provided on the hoistway wall 14 without forming a hole in the hoistway wall 14 for attaching the second latch receiving member 11.

[0047] In the elevator landing door device according to each embodiment, the first latch 12 is released from engagement with the first latch receiver 10 when the first latch 12 is pushed in the door-open direction while the first landing door 1 is in the door-open lock position. However, a first operating member for releasing the engagement of the first latch 12 with the first latch receiver 10 may be provided on the first landing door 1, and the engagement of the first latch 12 with the first latch receiver 10 may be released when the first operating member is operated. Alternatively, the first latch 12 may be released from engagement with the first latch receiver 10 when a worker in the elevator shaft operates the first latch receiver 10 or the first latch 12. Alternatively, the elevator may be configured to include a first detection device that detects that the first latch 12 is pushed in the door-open direction while the first landing door 1 is in the door-open lock position, and a first drive device that releases the engagement of the first latch 12 with the first latch receiver 10. In this case, a control device (not shown) controls driving of the first drive device based on the detection result of the first detection device to release the engagement of the first latch 12 with the first latch receiving member 10. As a result, when the first latch 12 is pushed in the door-opening direction with the first landing door 1 in the door-open lock position, the engagement of the first latch 12 with the first latch receiving member 10 can be released. In this case, the first detection device may be configured to detect when the first latch 12 is continuously pushed in the door-opening direction for a predetermined period of time or more with the first landing door 1 in the door-open lock position. An example of the predetermined period of time is three seconds. This makes it possible to prevent the engagement of the first latch 12 with the first latch receiving member 10 from being released when the first latch 12 is accidentally pushed in the door-opening direction.

[0048] Furthermore, in the elevator landing door device according to each embodiment, the second latch 13 is released from engagement with the second latch receiving member 11 when the second latch 13 is pushed in the door-open direction while the second landing door 2 is in the door-open lock position. However, a configuration may also be adopted in which a second operating member for releasing the engagement of the second latch 13 with the second latch receiving member 11 is provided on the second landing door 2, and the engagement of the second latch 13 with the second latch receiving member 11 is released when the second operating member is operated. Alternatively, a configuration may be adopted in which the engagement of the second latch 13 with the second latch receiving member 11 is released when a worker in the elevator shaft operates the second latch receiving member 11 or the second latch 13. Alternatively, a configuration may be adopted in which the elevator includes a second detection device that detects that the second latch 13 is pushed in the door-open direction while the second landing door 2 is in the door-open lock position, and a second drive device that releases the engagement of the second latch 13 with the second latch receiving member 11. In this case, a control device (not shown) controls driving of the second drive device based on the detection result of the second detection device to release the engagement of the second latch 13 with the second latch receiving member 11. As a result, when the second latch 13 is pushed in the door-open direction with the second landing door 2 in the door-open lock position, the engagement of the second latch 13 with the second latch receiving member 11 can be released. In this case, the second detection device may be configured to detect when the second latch 13 is continuously pushed in the door-open direction for a preset period of time or more with the second landing door 2 in the door-open lock position. An example of the preset period of time is three seconds. This makes it possible to prevent the engagement of the second latch 13 with the second latch receiving member 11 from being released when the second latch 13 is accidentally pushed in the door-open direction.

[0049] Furthermore, the elevator landing door device according to each embodiment has been described as including the first latch receiving member 10, the second latch receiving member 11, the first latch 12, and the second latch 13. However, the elevator may be configured to include only either the first latch receiving member 10 and the first latch 12 or the second latch receiving member 11 and the second latch 13. The first landing door 1 and the second landing door 2 are connected to each other via an interlocking rope. Therefore, by providing a latch on either the first landing door 1 or the second landing door 2 and providing a latch receiving member on the hoistway wall 14, the positions of the first landing door 1 and the second landing door 2 can be maintained in the door-open lock position.

[0050] Although the elevator hall door devices according to the preferred embodiments have been described above, the elevator hall door devices according to the above-described embodiments are not limited to the above-described embodiments. Various modifications and alterations can be made to the elevator hall door devices according to the above-described embodiments without departing from the scope of the claims. [Explanation of symbols]

[0051] 1 first landing door (landing door), 2 second landing door (landing door), 3 hanger case, 4 door rail, 5 first door hanger, 6 second door hanger, 7 first hanger roller, 8 second hanger roller, 9 landing threshold, 10 first latch receiving member (latch receiving member), 11 second latch receiving member (latch receiving member), 12 first latch (latch), 13 second latch (latch), 14 elevator shaft wall, 141 landing entrance / exit.

Claims

1. Landing door and a latch receiving member provided on a wall of the elevator shaft; a latch that is provided on the landing door and that restricts movement of the landing door in a door-closing direction by engaging with the latch receiving member; Equipped with When the landing door moves together with the car door, the landing door moves between a door-closed position at which a landing entrance is closed and a door-open position at which the landing entrance is opened, when the landing door moves separately from the car door, the landing door moves between the door closed position and a door open lock position which is moved from the door open position in a door opening direction by a preset distance, When the landing door is in the door-open lock position, the latch engages with the latch receiving member, When the landing door is pushed in the door-opening direction while the landing door is in the door-opening lock position, the engagement of the latch with the latch receiving member is released, An elevator landing door device in which the latch engages with the latch receiving member when the landing door moves from the door closed position to the door open locked position.

2. 2. The elevator hall door device according to claim 1, wherein the latch receiving member is provided on a wall of the elevator shaft via a hanger case.

3. 2. The elevator hall door apparatus according to claim 1, wherein the latch receiving member is provided on a wall of the elevator shaft via a hall threshold.

Images