JP7448063B1 - elevator - Google Patents

Abstract

The present invention provides an elevator that can suppress damage to the sensor and the plate even if the sensor collides with the plate. [Solution] The elevator includes a plate that is attached to a hoistway and arranged according to the landing position of a car moving up and down in the hoistway, a sensor that is attached to the car and detects the plate, and a plate. and a rotation mechanism that connects at least one of the sensors so as to be rotatable about an axis in a lateral direction with respect to the hoistway or the car, and the rotation mechanism initializes the plate or the sensor by the collision between the plate and the sensor. Rotate from position. [Selection diagram] Figure 3

Description

This application relates to elevators.

Elevators, for example, detect the position of a car in order to land the car at a destination floor (for example, Patent Document 1 listed below). Detection of the car position is realized, for example, by using a U-shaped photoelectric sensor provided on the car to detect plates provided near each floor in the hoistway. The car position is detected by the plate entering the open part of the U-shaped photoelectric sensor and blocking the optical axis.

By the way, for example, due to shaking of a building (hoistway) such as during an earthquake, the positions of sensors and plates may shift while the car is running. In such a case, the sensor may collide with the plate and be damaged, and it may take time to restore the sensor.

Japanese Patent Application Publication No. 2007-161373

Therefore, an object of the present invention is to provide an elevator that can suppress damage to the sensor and the plate even when the sensor collides with the plate.

[1]
The elevator includes a plate attached to a hoistway and arranged according to a landing position of a car ascending and descending in the hoistway, a sensor attached to the car and detecting the plate, and the plate. and a rotation mechanism that rotatably connects at least one of the sensors with respect to the hoistway or the car about a lateral direction, and the rotation mechanism is configured to rotate when the plate and the sensor collide. , rotating the plate or the sensor from an initial posture.

[2]
Further, in the elevator of [1] above, the rotation mechanism includes a torque limiter that connects the hoistway and the plate, or the car and the sensor, and the plate or the sensor is connected to the torque The configuration may be such that the initial posture is held by a limiter.

[3]
Further, in the elevator according to [2] above, the set torque of the torque limiter may be configured such that the set torque of the torque limiter is 2.5 times or more and 5 times or less of the torque generated by the own weight of the plate or the sensor in the initial posture. .

[4]
Further, in any of the elevators [1] to [3] above, the rotation mechanism includes a support member that is fixed to the hoistway or the car and rotatably supports the plate or the sensor. The plate or the sensor may be held in the initial position by weight balance of the plate or the sensor.

[5]
Further, in the elevator of [4] above, the plate or the sensor is provided with a vertically elongated elongated hole, the support member is provided with a support shaft inserted through the elongated hole, and the plate or the sensor is provided with a support shaft that is inserted into the elongated hole, The sensor may be configured to be held in the initial position with the support shaft in contact with the upper end of the elongated hole.

[6]
Further, in the elevator of [5] above, the plate or the sensor includes a protrusion extending parallel to the support shaft, and the plate or the sensor is provided with the protrusion in contact with the upper surface of the support member. , and may be held in the initial position.

Overall diagram of the elevator according to the first embodiment Plan view showing the positional relationship between the plate and sensor Front view showing the positional relationship between the plate and sensor A plan view showing main parts of the elevator according to the first embodiment A front view showing main parts of the elevator according to the first embodiment Front view showing what happens when the sensor collides with the plate from below Front view showing what happens when the sensor collides with the plate from below A plan view showing main parts of an elevator according to a second embodiment A front view showing main parts of an elevator according to a second embodiment Front view showing what happens when the sensor collides with the plate from above Front view showing what happens when the sensor collides with the plate from above Front view showing what happens when the sensor collides with the plate from below Front view showing what happens when the sensor collides with the plate from below Front view showing what happens when the sensor collides with the plate from below Front view showing what happens when the sensor collides with the plate from below A plan view showing main parts of an elevator according to another embodiment A front view showing main parts of an elevator according to another embodiment A plan view showing main parts of an elevator according to another embodiment

<First embodiment>
A first embodiment of the elevator will be described below with reference to FIGS. 1 to 7. In each figure, the dimensional ratio in the drawing and the actual dimensional ratio do not necessarily match, and the dimensional ratio between the drawings also does not necessarily match.

As shown in FIG. 1, the elevator 1 includes, for example, a car 1a for people to ride, a car rope 1b connected to the car 1a, and an elevator counterweight (hereinafter simply referred to as " 1c, a hoist 1d that drives the car rope 1b to make the car 1a and the counterweight 1c travel in the vertical direction D3, a car rail 1e that guides the car 1a, and a counterweight 1c. The elevator 1 may include a weight rail 1f that guides the elevator 1c, and a processing section 1g that controls each part of the elevator 1.

Note that although the elevator 1 according to the present embodiment has a configuration in which the hoisting machine 1d is disposed inside the machine room X2, it is not limited to such a configuration. For example, the elevator 1 may have a configuration in which the machine room X2 is not provided and the hoisting machine 1d is disposed inside the hoistway X1.

Further, in each figure, the first direction D1 is the first lateral direction D1, and the second direction D2 is the second lateral direction D2, which is a lateral direction orthogonal to the first lateral direction D1, in which the passenger is in the car. The third direction D3 is an up-and-down direction D3 that is perpendicular to each of the lateral directions D1 and D2, and is an up-and-down direction in which the car 1a and the counterweight 1c go up and down.

The elevator 1 includes a plate 2 attached to the hoistway X1 and a sensor 3 attached to the car 1a to detect the plate 2. The elevator 1 also includes a rotation mechanism 4 (not shown in FIG. 1) that connects the sensor 3 to the car 1a so as to be rotatable about the second lateral direction D2.

FIG. 2 is a plan view showing the positional relationship between the plate 2 and the sensor 3. Moreover, FIG. 3 is a front view showing the positional relationship between the plate 2 and the sensor 3.

The plate 2 has a plate shape extending along the vertical direction D3 and the first lateral direction D1. Although the plate 2 of this embodiment has a plate shape that is bent into a substantially L-shape when viewed in the vertical direction D3, the plate 2 is not limited to this. The plate 2 may have a flat plate shape.

Plate 2 is attached to hoistway X1. Here, being attached to the hoistway X1 means that it is attached directly or to a structure such as an inner wall or a beam of the hoistway Means to be attached indirectly. That is, although the plate 2 of this embodiment is attached to the car rail 1e via the stay 2a, the present invention is not limited to this. For example, the plate 2 may be attached directly to the car rail 1e. Furthermore, for example, the plate 2 may be attached directly or indirectly to the inner wall of the hoistway X1.

The plate 2 is arranged according to the landing position of the car 1a moving up and down within the hoistway X1. More specifically, the plate 2 is provided near each floor in the hoistway X1. Although only two plates 2 are shown in FIG. 1, three or more plates 2 may be provided depending on the number of floors.

FIG. 4 is a plan view showing the main parts of the elevator 1 according to the first embodiment, and FIG. 5 is a front view showing the main parts of the elevator 1 according to the first embodiment. In addition, in FIG. 5, only a part of the rotation mechanism 4 is shown.

The sensor 3 is attached to the car 1a. Although not particularly limited, the sensor 3 is attached, for example, near the side of the ceiling of the car 1a, as shown in FIG. The sensor 3 of this embodiment is a photoelectric sensor. Note that the sensor 3 is not particularly limited as long as it can detect the plate 2, and may be a proximity sensor, an image sensor, etc., for example. The sensor 3 has a U-shape as shown in FIG. 4, and can detect the plate 2 entering the opening. The sensor 3 includes a light projector that emits light and a light receiver that receives the light. The light projecting section and the light receiving section are arranged to face the open section. When the light emitted from the light projecting section is blocked by an object, the light received by the light receiving section changes, so that the sensor 3 can detect the object (here, the plate 2) entering the open section. The optical axis 3a of the sensor 3 extends in the second lateral direction D2. The sensor 3 can rotate around a rotation axis 4a (described later) that extends in the second lateral direction D2.

The rotation mechanism 4 may include a first support member 41 fixed to the car 1a, and a torque limiter 42 provided between the first support member 41 and the rotation shaft 4a of the sensor 3. Further, the rotation mechanism 4 may include a mounting bracket 43 to which the sensor 3 is mounted.

The mounting bracket 43 may include a horizontal plate 43a to which the sensor 3 is fixed by a fastening member or the like, and a vertical plate 43b connected to the lower surface of the horizontal plate 43a. The mounting bracket 43 has a T-shape when viewed in the first lateral direction D1. A rotating shaft 4a is provided protruding from one side surface of the vertical plate 43b. The rotating shaft 4a has a cylindrical shape.

The first support member 41 is a substantially L-shaped member when viewed in the vertical direction D3, is fixed to the car 1a, and supports the torque limiter 42.

Torque limiter 42 holds rotation shaft 4a of mounting bracket 43. The torque limiter 42 normally holds the rotating shaft 4a at a predetermined position, but when a torque exceeding a set torque is applied to the rotating shaft 4a, it cuts off torque transmission and allows the rotating shaft 4a to rotate. do.

Normally, as shown in FIG. 2, the sensor 3 and the plate 2 are arranged so as not to overlap in a plan view (as seen in the vertical direction D3). Further, the sensor 3 shown in FIG. 3 is in a normal state, and this normal attitude of the sensor 3 is referred to as an initial attitude 3P. Normally, the sensor 3 moves up and down together with the car 1a without contacting the plate 2, so the sensor 3 maintains the initial posture 3P. However, due to shaking such as an earthquake, the positions of the sensor 3 and/or the plate 2 may shift, and the sensor 3 may collide with the plate 2.

FIGS. 6 and 7 show the situation when the sensor 3 collides with the plate 2 from below when the car 1a rises. When the sensor 3 collides with the plate 2 and a torque exceeding the set torque is applied to the rotating shaft 4a, the torque limiter 42 allows the rotating shaft 4a to rotate. As a result, the mounting bracket 43 becomes rotatable downward, and the sensor 3 starts rotating downward (clockwise in FIGS. 6 and 7) about the rotation axis 4a from the initial posture 3P. Then, as the sensor 3 continues to rise, the sensor 3 continues to rotate around the rotating shaft 4a, and can be rotated and retracted to a retracted position where it does not come into contact with the plate 2, as shown in FIG. Note that the retracted position is a position where the sensor 3 and the plate 2 do not overlap in plan view (viewed in the vertical direction D3).

Note that the set torque of the torque limiter 42 is preferably 2.5 times or more and 5 times or less of the torque generated by the sensor 3's own weight in the initial posture 3P. Here, the torque generated by the weight of the sensor 3 is the torque generated by the weight of the sensor 3 and the mounting bracket 43 when the sensor 3 is connected to the torque limiter 42 via the mounting bracket 43 as in this embodiment. It is torque. When the set torque is smaller than 2.5 times the torque generated by the sensor 3's own weight, there is a risk that the sensor 3 will rotate unintentionally when the torque is applied due to vertical vibrations that may occur during an earthquake, for example. be. On the other hand, when the set torque is more than five times the torque generated by the sensor 3's own weight, the sensor 3 will not rotate even if the sensor 3 collides with the plate 2, and there is a risk that the sensor 3 will be damaged.

Similarly, when the sensor 3 collides with the plate 2 from above, the sensor 3 can rotate upward from the initial posture 3P (counterclockwise in FIGS. 6 and 7) and retreat. .

As described above, the elevator 1, as in the present embodiment, includes a plate 2 that is attached to the hoistway X1 and arranged according to the landing position of the car 1a that ascends and descends in the hoistway X1, and a plate 2 that is attached to the hoistway a sensor 3 attached to the car 1a to detect the plate 2; and a rotation mechanism 4 rotatably connecting the sensor 3 to the car 1a about a second lateral direction D2 as an axis. The mechanism 4 preferably has a configuration in which the plate 2 and the sensor 3 collide with each other to rotate the sensor 3 from the initial posture 3P.

According to such a configuration, when the plate 2 and the sensor 3 collide, the sensor 3 can rotate and retreat from the initial posture 3P about the second lateral direction D2, so that the sensor 3 collides with the plate 2. Even if the sensor 3 and the plate 2 collide with each other, damage to the sensor 3 and the plate 2 can be suppressed.

Further, in the elevator 1, the rotation mechanism 4 includes a torque limiter 42 that connects the car 1a and the sensor 3, and the sensor 3 is held in the initial posture 3P by the torque limiter 42. configuration is preferred.

According to such a configuration, the sensor 3 can be reliably held in the initial posture 3P by the torque limiter 42, and when the plate 2 and the sensor 3 collide and a torque exceeding the set torque is applied to the torque limiter 42, The sensor 3 can be appropriately rotated and retracted from the initial posture 3P.

Further, in the elevator 1, it is preferable that the set torque of the torque limiter 42 is 2.5 times or more and 5 times or less the torque generated by the dead weight of the sensor 3 in the initial posture 3P.

According to such a configuration, the sensor 3 is normally held reliably in the initial posture 3P by the torque limiter 42, and can be appropriately rotated and evacuated from the initial posture 3P when colliding with the plate 2.

Further, in the elevator 1, a plurality of plates 2 are arranged side by side in the vertical direction D3, and are attached to the hoistway X1 without using the rotation mechanism 4, and the rotation mechanism 4 rotates the sensor 3 with respect to the car 1a. A configuration in which the components are rotatably connected is preferable.

According to such a configuration, since the rotation mechanism 4 rotatably connects the sensor 3, the installation cost can be reduced compared to the case where a plurality of plates 2 provided near each floor are rotatably connected.

Note that the elevator 1 is not limited to the configuration and operation of the elevator 1 according to the first embodiment described above. For example, the following changes may be made to the elevator 1 according to the first embodiment described above.

(1A) In the elevator 1 according to the first embodiment, the rotation mechanism 4 includes a torque limiter 42 that connects the car 1a and the sensor 3, and the sensor 3 is held in the initial posture 3P by the torque limiter 42. The configuration is as follows. However, the elevator 1 is not limited to such a configuration. For example, as shown in FIG. 16, the rotation mechanism 4 may include a torque limiter 42 that connects the hoistway X1 and the plate 2, and the plate 2 may be held in an initial position by the torque limiter 42. A rotating shaft 4c is provided protruding from the side surface of the plate 2, and the plate 2 can rotate around the rotating shaft 4c extending in the second lateral direction D2. The first support member 41 is a substantially L-shaped member when viewed in the vertical direction D3, is fixed to the hoistway X1, and supports the torque limiter 42.

<Second embodiment>
Next, a second embodiment of the elevator 1 will be described with reference to FIGS. 8 to 15. Note that in FIGS. 8 to 15, parts with the same reference numerals as those in FIGS. 1 to 7 represent elements having substantially the same configuration or substantially the same function (action) as in the first embodiment, and Do not repeat the explanation.

FIG. 8 is a plan view showing the main parts of the elevator 1 according to the second embodiment, and FIG. 9 is a front view showing the main parts of the elevator 1 according to the second embodiment.

The elevator 1 includes a plate 2 attached to the hoistway X1 and a sensor 3 attached to the car 1a to detect the plate 2. The elevator 1 also includes a rotation mechanism 4 that rotatably connects the plate 2 to the hoistway X1 about the second lateral direction D2. The plate 2 rotates around a support shaft 4b (described later) that extends in the second lateral direction D2.

The rotation mechanism 4 may include a second support member 44 that is fixed to the hoistway X1 and rotatably supports the plate 2. The second support member 44 has a substantially L-shape when viewed from the front (viewed in the second lateral direction D2), and is attached to structures such as the inner walls and beams of the hoistway X1, members installed in the hoistway The rail 1e, the weight rail 1f) may include a horizontal portion 44a, one end of which is fixed directly or via a stay (not shown), and a vertical portion 44b extending upward from the other end of the horizontal portion 44a. . The horizontal portion 44a and the vertical portion 44b are plate-shaped. A support shaft 4b is provided protruding from one side of the upper part of the vertical portion 44b. The support shaft 4b has a cylindrical shape.

The plate 2 has a substantially rectangular plate shape. The plate 2 includes a long hole 21 extending in the vertical direction D3. Although the elongated hole 21 of this embodiment is formed at the center of the plate 2 in the first lateral direction D1, the elongated hole 21 is not limited thereto. The long hole 21 may be formed on the side closer to the car 1a than the center of the plate 2 in the first lateral direction D1.

The support shaft 4b of the second support member 44 is inserted into the long hole 21. Thereby, the plate 2 is supported by the second support member 44 so as to be rotatable about the support shaft 4b. The support shaft 4b is longer than the thickness of the plate 2, and a split pin, retaining ring, etc. (not shown) is attached to the tip of the support shaft 4b to prevent the plate 2 from falling off.

Further, the width of the long hole 21 in the first lateral direction D1 is larger than the diameter of the support shaft 4b. Therefore, the support shaft 4b is movable along the elongated hole 21. Thereby, under normal conditions, the plate 2 is lowered by its own weight and is supported with the support shaft 4b in contact with the upper end of the elongated hole 21, as shown in FIG.

The plate 2 may include a protrusion 22 extending parallel to the support shaft 4b. The protrusion 22 is provided in a protruding manner on a side surface of the plate 2 that is closer to the second support member 44 . The protrusion 22 is formed on the side farther from the car 1a than the elongated hole 21. Furthermore, the protrusion 22 is formed below the upper end of the elongated hole 21 . In the plate 2, the support shaft 4b is in contact with the upper end of the elongated hole 21, and the protrusion 22 is urged in a downward rotating direction (clockwise in FIG. 9) about the support shaft 4b.

The plate 2 may be supported with the protrusion 22 in contact with the upper surface of the second support member 44, more specifically, the upper surface of the horizontal portion 44a. That is, the protrusion 22 may function as a stopper that restricts the rotation of the plate 2. Further, the protrusion 22 may be arranged so as to be in contact with the end surface of the vertical portion 44b of the second support member 44.

The plate 2 is arranged according to the landing position of the car 1a moving up and down within the hoistway X1. More specifically, the plate 2 is provided near each floor in the hoistway X1. Although only one plate 2 is shown in FIG. 9, it is actually provided on each floor. Each plate 2 is connected to the hoistway X1 by a rotation mechanism 4.

Normally, as shown in FIG. 8, the sensor 3 and the plate 2 are arranged so as not to overlap in a plan view (as seen in the vertical direction D3). Further, the plate 2 shown in FIG. 9 is in a normal state, and this normal posture of the plate 2 is referred to as an initial posture 2P. Normally, the sensor 3 moves up and down together with the car 1a without contacting the plate 2, so the plate 2 maintains the initial posture 2P. However, due to shaking such as an earthquake, the positions of the sensor 3 and/or the plate 2 may shift, and the sensor 3 may collide with the plate 2.

As described above, in the initial position 2P, the plate 2 is rotated in the downward rotation direction (clockwise in FIG. direction). The protrusions 22 restrict the rotation of the plate 2, so that the plate 2 is held in the initial posture 2P by its own weight balance.

FIGS. 10 and 11 show how the sensor 3 collides with the plate 2 from above when the car 1a descends. When the sensor 3 collides with the plate 2, as shown in FIG. 10, the plate 2 starts rotating downward (counterclockwise in FIGS. 10 and 11) about the support shaft 4b from the initial posture 2P. Then, as the sensor 3 continues to descend, the plate 2 continues to rotate about the support shaft 4b, and as shown in FIG. 11, it can rotate and retreat to a retracted position where it does not come into contact with the sensor 3. Note that the retracted position is a position where the sensor 3 and the plate 2 do not overlap in plan view (viewed in the vertical direction D3).

On the other hand, FIGS. 12 to 15 show the situation when the sensor 3 collides with the plate 2 from below when the car 1a rises. When the sensor 3 collides with the plate 2, the plate 2 starts to rise while being guided by the support shaft 4b, as shown in FIG. At this time, the plate 2 may rise while the protrusion 22 is guided by the vertical portion 44b of the second support member 44. Then, as the sensor 3 continues to rise, the plate 2 rises until the support shaft 4b comes into contact with the lower end of the elongated hole 21, as shown in FIG. As the sensor 3 continues to rise further, the plate 2 starts rotating upward (clockwise in FIG. 14) from the initial posture 2P about the support shaft 4b, as shown in FIG. Then, as the sensor 3 continues to rise further, the plate 2 continues to rotate around the support shaft 4b, and as shown in FIG. 15, can be rotated and retracted to a retracted position where it does not come into contact with the sensor 3.

In FIGS. 12 to 14, the plate 2 starts rotating about the support shaft 4b after the support shaft 4b comes into contact with the lower end of the elongated hole 21, but in reality, the plate 2 starts rotating before that. You may start.

As described above, the elevator 1, as in the present embodiment, includes a plate 2 that is attached to the hoistway X1 and arranged according to the landing position of the car 1a that ascends and descends in the hoistway X1, and a plate 2 that is attached to the hoistway a sensor 3 that is attached to and detects the plate 2; and a rotation mechanism 4 that rotatably connects the plate 2 to the hoistway X1 about a second lateral direction D2; It is preferable that the rotation mechanism 4 rotates the plate 2 from the initial posture 2P when the plate 2 and the sensor 3 collide.

According to such a configuration, when the plate 2 and the sensor 3 collide, the plate 2 can rotate and retreat from the initial posture 2P about the second lateral direction D2, so that the sensor 3 collides with the plate 2. Even if the sensor 3 and the plate 2 collide with each other, damage to the sensor 3 and the plate 2 can be suppressed.

Furthermore, in the elevator 1, the rotation mechanism 4 includes a second support member 44 that is fixed to the hoistway X1 and rotatably supports the plate 2; It is preferable to maintain the initial posture 2P due to weight balance.

According to such a configuration, the plate 2 is held in the initial posture 2P by its own weight balance, and therefore can be easily set to the initial posture 2P.

Further, in the elevator 1, the plate 2 includes a long hole 21 extending in the vertical direction D3, the second support member 44 includes a support shaft 4b inserted through the long hole 21, and the plate 2 It is preferable that the support shaft 4b is held in the initial position 2P with the support shaft 4b in contact with the upper end of the elongated hole 21.

According to such a configuration, since the center of gravity is located at the lower part of the plate 2, the plate 2 is appropriately held in the initial posture 2P by its own weight balance.

Further, in the elevator 1, the plate 2 includes a protrusion 22 extending parallel to the support shaft 4b, and the plate 2 has a protrusion 22 extending parallel to the support shaft 4b. It is preferable to maintain the initial posture 2P.

According to such a configuration, the protrusion 22 functions as a stopper that restricts the rotation of the plate 2, so that the plate 2 is appropriately held in the initial posture 2P by its own weight balance.

Note that the elevator 1 is not limited to the configuration and operation of the elevator 1 according to the second embodiment described above. For example, the following changes may be made to the elevator 1 according to the second embodiment described above.

(2A) In the elevator 1 according to the second embodiment, the rotation mechanism 4 includes the second support member 44 that is fixed to the hoistway X1 and rotatably supports the plate 2, and the plate 2 The configuration is such that the weight balance of the plate 2 keeps it in the initial posture 2P. However, the elevator 1 is not limited to such a configuration. For example, as shown in FIG. 17, the rotation mechanism 4 includes a second support member 44 that is fixed to the car 1a and rotatably supports the sensor 3. It may also be configured such that it is held in a posture. The sensor 3 includes a movable plate 45, and the second support member 44 rotatably supports the sensor 3 via the movable plate 45. Further, the sensor 3 is held in the initial posture by the weight balance of the sensor 3 including the movable plate 45.

(2B) Furthermore, in the elevator 1 according to the second embodiment, the plate 2 includes the elongated hole 21 that is elongated in the vertical direction D3, and the second support member 44 has a support shaft that is inserted through the elongated hole 21. 4b, and the plate 2 is held in the initial posture 2P with the support shaft 4b in contact with the upper end of the elongated hole 21. However, the elevator 1 is not limited to such a configuration. For example, as shown in FIG. 17, the sensor 3 includes a long hole 45a extending in the vertical direction D3, the second support member 44 includes a support shaft 4b inserted through the long hole 45a, and the sensor 3 includes: It may be configured such that the support shaft 4b is held in the initial position with the support shaft 4b in contact with the upper end of the elongated hole 45a. The long hole 45a is formed in the movable plate 45. Further, the elongated hole 45a is formed on the side farther from the car 1a than the center of the movable plate 45 in the first lateral direction D1. The support shaft 4b of the second support member 44 is inserted into the long hole 45a. Thereby, the sensor 3 is rotatably supported by the second support member 44 together with the movable plate 45 about the support shaft 4b.

(2C) Furthermore, in the elevator 1 according to the second embodiment, the plate 2 includes the protrusion 22 extending parallel to the support shaft 4b, and the plate 2 has the protrusion 22 in contact with the upper surface of the second support member 44. The configuration is such that the initial posture 2P is maintained in this state. However, the elevator 1 is not limited to such a configuration. For example, as shown in FIG. 17, the sensor 3 includes a protrusion 45b extending parallel to the support shaft 4b, and the sensor 3 is held in the initial position with the protrusion 45b in contact with the upper surface of the second support member 44. It may also be configured such that The movable plate 45 includes a protrusion 45b extending parallel to the support shaft 4b. Further, the protrusion 45b is provided to protrude from a side surface of the movable plate 45 that is closer to the second support member 44.

Note that the elevator 1 is not limited to the configuration of the embodiment described above, nor is it limited to the effects described above. Moreover, it goes without saying that the elevator 1 may be modified in various ways without departing from the gist of the present invention. For example, each configuration, each method, etc. of the plurality of embodiments described above may be arbitrarily adopted and combined (each configuration, each method, etc. of one embodiment may be combined with the configuration, method, etc. of another embodiment). Furthermore, it is possible to arbitrarily select one or more of the configurations, methods, etc. related to the various modification examples described below and adopt them to the configurations, methods, etc. related to the embodiments described above. Of course.

(A) In the elevator 1 according to the first and second embodiments, only one sensor 3 is attached to the car 1a. However, the elevator 1 is not limited to such a configuration. For example, a plurality of sensors 3 may be attached to the car 1a. Further, the plurality of sensors 3 may be individually attached to the car 1a, or may be attached together via a mounting bracket 43, as shown in FIG. At this time, the rotation mechanism 4 connects the plurality of sensors 3 together to be rotatable about the second lateral direction D2 with respect to the car 1a.

In the example shown in FIG. 18, the plurality of sensors 3 are arranged side by side in the second horizontal direction D2, but the plurality of sensors 3 may be arranged side by side in the vertical direction D3. At this time, the rotation mechanism 4 may connect each sensor 3 rotatably to the car 1a.

(B) Furthermore, in the elevator 1 according to the second embodiment, the rotation mechanism 4 includes a second support member 44 that is fixed to the hoistway X1 and rotatably supports the plate 2, and the plate 2 is The configuration is such that the weight balance of the plate 2 keeps it in the initial posture 2P. However, the elevator 1 is not limited to such a configuration. For example, the plate 2 may be held in the initial position 2P by a biasing member such as a spring. Further, in the embodiment shown in FIG. 17, the sensor 3 may be held in the initial position by a biasing member such as a spring.

(C) In the elevator 1 according to the second embodiment, the second support member 44 is approximately L-shaped in front view, and is attached to structures such as the inner walls and beams of the hoistway X1. A horizontal portion 44a, one end of which is fixed directly or via a stay (not shown), to a member (for example, car rail 1e, weight rail 1f) installed in 44b. However, the elevator 1 is not limited to such a configuration. For example, the second support member 44 may have a rectangular shape when viewed from the front.

(D) Furthermore, the upper corner of the vertical portion 44b of the second support member 44 may be chamfered (R chamfer, C chamfer). Among the upper corners of the vertical portion 44b, the corner closer to the protrusion 22 (the protrusion 45b in the example shown in FIG. 17) is preferably chamfered. Thereby, when the plate 2 (the movable plate 45 in the example shown in FIG. 17) rotates, it is possible to prevent the protrusion 22 (the protrusion 45b in the example shown in FIG. 17) from interfering with the corner.

(E) The sensor 3 may include protective plates (not shown) fixed to the upper and lower surfaces. Thereby, the impact when colliding with the plate 2 can be suppressed.

(F) In the elevator 1 according to the first and second embodiments, the sensor 3 is a transmissive photoelectric sensor, but is not limited thereto, and may be a reflective photoelectric sensor.

(G) In the elevator 1 according to the first and second embodiments, the rotation mechanism 4 rotates at least one of the plate 2 and the sensor 3 about the second lateral direction D2 with respect to the hoistway X1 or the car 1a. It has a configuration in which it is rotatably connected. However, the elevator 1 is not limited to such a configuration. For example, the rotation mechanism 4 may have a configuration in which at least one of the plate 2 and the sensor 3 is rotatably connected to the hoistway X1 or the car 1a about the first lateral direction D1. Further, the rotation mechanism 4 connects at least one of the plate 2 and the sensor 3 so as to be rotatable with respect to the hoistway X1 or the car 1a about a lateral direction that intersects the first lateral direction D1 and the second lateral direction D2. It may be configured to do so.

(H) In addition, when the plate 2 is connected to the hoistway X1 by the rotation mechanism 4, and the sensor 3 is connected to the car 1a by the rotation mechanism 4, both may be the same rotation mechanism 4, or different rotation Mechanism 4 may also be used. For example, the plate 2 is connected to the hoistway X1 by the rotation mechanism 4 including the torque limiter 42 as shown in the first embodiment, and the sensor 3 is connected to the car 1a as shown in the first embodiment. The connection may be made by a rotation mechanism 4 including a torque limiter 42 such as the above. Further, the plate 2 is connected to the hoistway X1 by the rotation mechanism 4 provided with the second support member 44 as shown in the second embodiment, and the sensor 3 is connected to the car 1a as shown in the second embodiment. The connection may be made by a rotation mechanism 4 including a second support member 44 as shown in FIG. Further, the plate 2 is connected to the hoistway X1 by a rotation mechanism 4 including a torque limiter 42 as shown in the first embodiment, and the sensor 3 is connected to the car 1a as shown in the second embodiment. The connection may be made by a rotation mechanism 4 including a second support member 44 such as the above. Further, the plate 2 is connected to the hoistway X1 by the rotation mechanism 4 including the second support member 44 as shown in the second embodiment, and the sensor 3 is connected to the car 1a in the same manner as in the first embodiment. The connection may be made by a rotation mechanism 4 equipped with a torque limiter 42 as shown in FIG.

1... Elevator, 1a... Car, 1b... Car rope, 1c... Counterweight, 1d... Hoisting machine, 1e... Car rail, 1f... Weight rail, 1g... Processing section, 2... Plate, 2P... Initial posture, 2a ...stay, 3...sensor, 3P...initial posture, 3a...optical axis, 4...rotation mechanism, 4a...rotation shaft, 4b...support shaft, 4c...rotation shaft, 21...long hole, 22...protrusion, 41...first Support member, 42...torque limiter, 43...mounting bracket, 43a...horizontal plate, 43b...vertical plate, 44...second support member, 44a...horizontal part, 44b...vertical part, 45...movable plate, 45a...elongated hole, 45b...Protrusion, D1...First lateral direction, D2...Second lateral direction, D3...Vertical direction, X1...Hoistway, X2...Machine room

Claims (6)

a plate attached to a hoistway and arranged according to a landing position of a car moving up and down in the hoistway;
a sensor attached to the car and detecting the plate;
a rotation mechanism that rotatably connects at least one of the plate and the sensor to the hoistway or the car, with a lateral direction as an axis;
The rotation mechanism rotates the plate or the sensor from an initial posture when the plate and the sensor collide ,
The rotation mechanism includes a torque limiter that connects the hoistway and the plate, or the car and the sensor,
The torque limiter is supported by the hoistway or the car, and holds a rotation axis provided on the plate or the sensor,
The elevator , wherein the plate or the sensor is held in the initial posture by the torque limiter . The elevator according to claim 1 , wherein the set torque of the torque limiter is 2.5 times or more and 5 times or less the torque generated by the weight of the plate or the sensor in the initial posture. The rotation mechanism includes a support member that is fixed to the hoistway or the car and rotatably supports the plate or the sensor,
The elevator according to claim 1 or 2 , wherein the plate or the sensor is held in the initial posture by a weight balance of the plate or the sensor. The plate or the sensor includes a vertically elongated elongated hole,
The support member includes a support shaft inserted into the long hole,
The elevator according to claim 3 , wherein the plate or the sensor is held in the initial position with the support shaft in contact with the upper end of the elongated hole. a plate attached to a hoistway and arranged according to a landing position of a car moving up and down in the hoistway ;
a sensor attached to the car and detecting the plate;
a rotation mechanism that rotatably connects at least one of the plate and the sensor to the hoistway or the car, with a lateral direction as an axis;
The rotation mechanism rotates the plate or the sensor from an initial posture when the plate and the sensor collide,
The rotation mechanism includes a support member that is fixed to the hoistway or the car and rotatably supports the plate or the sensor,
The plate or the sensor includes a vertically elongated elongated hole,
The support member includes a support shaft inserted into the long hole,
In the elevator, the plate or the sensor is held in the initial position by a weight balance of the plate or the sensor with the support shaft in contact with an upper end of the elongated hole. The plate or the sensor includes a protrusion extending parallel to the support axis,
The elevator according to claim 5, wherein the plate or the sensor is held in the initial position with the protrusion in contact with the upper surface of the support member.