Automatic door device, automatic door system, deterioration detection method, program and storage medium

Abstract

It detects deterioration of the door drive mechanism with high precision. [Solution] The automatic door device 1 includes a door 10 and a door drive mechanism 20 for driving the door 10. The door drive mechanism 20 includes a rail base 21 having a rail 215 that guides the door 10 in the opening and closing direction, a door hanger 22 attached to the top of the door 10 and hung on the rail base 21, a drive source 24 that generates a driving force DF for moving the door 10, a drive roller 25 that is rotatable by the driving force DF, a driven roller 26 that is separated from the drive roller 25 in the longitudinal direction of the rail 215, and a drive roller 25 that is hung on the drive roller 25 and the driven roller 26, transmits the rotation of the drive roller 25 to the driven roller 26, and is connected to the door hanger 22 to move the door 10 in the opening and closing direction. The automatic door device 1 includes an acquisition unit 41 that acquires driven rotation information relating to the rotation of the driven roller 26, and a storage unit 42 that stores the driven rotation information.

Description

Technical Field

[0001] The present invention relates to an automatic door device, an automatic door system, a deterioration detection method, a program, and a storage medium.

Background Art

[0002] As disclosed in Patent Document 1, an automatic door device including a door, a door drive mechanism for driving the door, and a detection device for detecting deterioration of the door drive mechanism is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the automatic door device of Patent Document 1, the detection device includes a sensor capable of detecting abnormal vibration generated during the opening and closing operation of the door by a deteriorated door drive mechanism. However, the sensor also detects vibrations caused by factors other than the opening and closing operation of the door. In the automatic door device of Patent Document 1, the detection device erroneously detects deterioration of the door drive mechanism. An object of the present invention is to detect deterioration of a door drive mechanism with high accuracy.

Means for Solving the Problems

[0005] An automatic door device according to an embodiment of the present invention is a door, A door drive mechanism comprising: a rail base having a rail for guiding the door in the opening and closing direction; a door hanger attached to the upper part of the door and hung on the rail; a drive source that generates a driving force for moving the door; a drive roller rotatable by the driving force; a driven roller located from the drive roller in the longitudinal direction of the rail; and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction; An acquisition unit that acquires driven rotation information relating to the rotation of the driven roller, The system includes a storage unit for storing the aforementioned driven rotation information.

[0006] An automatic door system according to one embodiment of the present invention is A door drive mechanism comprising: a rail base having a rail for guiding the door in the opening and closing direction; a door hanger attached to the upper part of the door and hung on the rail; a drive source that generates a driving force for moving the door; a drive roller rotatable by the driving force; a driven roller located longitudinally from the drive roller in the rail; and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction; and an acquisition unit that acquires driven rotation information relating to the rotation of the driven roller in a door drive mechanism, The system includes a determination unit that determines the deterioration of the door drive device based on the driven rotation information.

[0007] A method for detecting deterioration of a door drive mechanism according to one embodiment of the present invention is: A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, The method includes the step of determining the deterioration of the door drive mechanism operating device based on the driven rotation information.

[0008] A program according to one embodiment of the present invention is A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, The computer is instructed to perform the steps of determining the deterioration of the door drive mechanism operating device based on the driven rotation information.

[0009] A storage medium according to one embodiment of the present invention is A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, The system stores a program for the computer to perform the steps of determining the deterioration of the door drive mechanism operating device based on the driven rotation information. [Effects of the Invention]

[0010] According to the present invention, deterioration of the door drive mechanism can be detected with high precision. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a diagram illustrating one embodiment, and is a front view of an automatic door device. [Figure 2] Figure 2 is a perspective view showing the door and rail base of the automatic door system shown in Figure 1. [Figure 3] Figure 3 is an exploded front view of the automatic door device shown in Figure 1, including the door mechanism in the fully closed position. [Figure 4] Figure 4 is an exploded front view of the automatic door system shown in Figure 1, including the door mechanism in the fully open position. [Figure 5] Figure 5 is an enlarged view of the drive roller and strip-shaped member in the door drive mechanism shown in Figures 3 and 4. [Figure 6] Figure 6 is an enlarged view of the driven roller and strip-shaped member in the door drive mechanism shown in Figures 3 and 4. [Figure 7] Figure 7 is a diagram illustrating an example of a deteriorated door drive mechanism. [Figure 8] Figure 8 illustrates another example of a deteriorated door drive mechanism. [Figure 9] FIG. 9 is a diagram for explaining still another example of the deteriorated door drive mechanism. [Figure 10] FIG. 10 is a block diagram of the detection device. [Figure 11] FIG. 11 is a diagram for explaining the first detection program. [Figure 12] FIG. 12 is a flowchart of the first detection program. [Figure 13] FIG. 13 is a diagram for explaining the second detection program. [Figure 14] FIG. 14 is a flowchart of the second detection program. [Figure 15] FIG. 15 is a diagram for explaining the third detection program. [Figure 16] FIG. 16 is a flowchart of the third detection program. [Figure 17] FIG. 17 is a diagram showing the output waveform of the first acquisition unit in the normal door drive mechanism. [Figure 18] FIG. 18 is a diagram showing an example of the output waveform of the first acquisition unit in the deteriorated door drive mechanism. [Figure 19] FIG. 19 is a flowchart of the fourth detection program. [Figure 20] FIG. 20 is a block diagram of the automatic door system.

MODE FOR CARRYING OUT THE INVENTION

[0012] One embodiment of the present disclosure relates to the following [1] to

[11] .

[0013] [1] A door, A door drive mechanism comprising: a rail base having a rail for guiding the door in the opening and closing direction; a door hanger attached to the upper part of the door and hung on the rail; a drive source that generates a driving force for moving the door; a drive roller rotatable by the driving force; a driven roller located from the drive roller in the longitudinal direction of the rail; and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction; An acquisition unit that acquires driven rotation information relating to the rotation of the driven roller, An automatic door device comprising a storage unit for storing the aforementioned driven rotation information.

[0014] [2] The acquisition unit acquires drive rotation information relating to the rotation of the drive roller, The storage unit stores the drive rotation information of the automatic door device [1].

[0015] [3] The automatic door device according to [1] or [2], further comprising a determination unit that determines deterioration of the door drive mechanism based on the driven rotation information stored in the memory unit.

[0016] [4] The door drive mechanism is equipped with a determination unit for determining deterioration, The driven rotation information includes the output waveform acquired by the acquisition unit. The determination unit determines the deterioration based on the output waveform, and is one of the automatic door devices [1] to [3].

[0017] [5] A determination unit for determining deterioration of the door drive mechanism, The driven rotation information includes the rotation speed of the driven roller. The aforementioned drive rotation information includes the rotation speed of the drive roller, The automatic door device [2], wherein the determination unit determines the deterioration based on a comparison of the rotational speed of the drive roller and the rotational speed of the driven roller.

[0018] [6] The door drive mechanism is equipped with a determination unit for determining deterioration, The determination unit calculates the delay time from when the drive roller starts rotating until the driven roller starts rotating, based on the drive rotation information and the driven rotation information, and determines the deterioration based on the delay time, in the automatic door device of [2] or [5].

[0019] [7] An automatic door device according to any one of [3] to [6], further comprising a notification unit for notifying the determination result of the determination unit.

[0020] [8] An acquisition unit for acquiring driven rotation information relating to the rotation of the driven roller in a door drive mechanism, which includes a door hanger attached to the door, a rail base having a rail on which the door hanger runs, a drive source that generates a driving force for moving the door, a drive roller that is rotatable by the driving force, a driven roller that is separated from the drive roller in the longitudinal direction of the rail, and a strip-shaped member that is stretched over the drive roller and the driven roller and transmits the driving force to the door hanger, A determination unit that determines the deterioration of the door drive mechanism based on the driven rotation information, An automatic door system equipped with the following features.

[0021] [9] An acquisition unit for acquiring driven rotation information relating to the rotation of the driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller and transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger and moves the door in the opening and closing direction, A method for detecting deterioration of a door drive mechanism, comprising the step of determining deterioration of the door drive mechanism based on the driven rotation information.

[0022]

[10] A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail, and a strip-shaped member that is hung on the drive roller and the driven roller and transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger and moves the door in the opening and closing direction, A step of determining deterioration of the door drive mechanism based on the driven rotation information, A program that causes a computer to execute something.

[0023]

[11] A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding a door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail, and a strip-shaped member that is hung on the drive roller and the driven roller and transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger and moves the door in the opening and closing direction, A storage medium that stores a program for causing a computer to perform the steps of determining deterioration of the door drive mechanism based on the driven rotation information.

[0024] An embodiment will be described below with reference to the drawings. In the drawings, the scale and dimensional ratios have been exaggerated from those of the actual object as appropriate for illustrative purposes and ease of understanding. Note that some components shown in one drawing may be omitted in others.

[0025] Terms such as "orthogonal" and "parallel," used to specify shapes, geometric conditions, and their degrees, are not limited to their strict meanings. These terms are interpreted to include a range of degrees to which similar functions can be expected.

[0026] Directions common to multiple drawings are indicated by arrows with a common reference number in each drawing. In each direction, the tip of the arrow is the first side. In each direction, the opposite side from the first side, i.e., the base of the arrow, is the second side. Arrows that run perpendicular to the plane of the drawing, from the front to the back of the paper, are indicated by a symbol with an X inside a circle, as shown in Figure 1, for example.

[0027] Figures 1 to 20 illustrate one embodiment. Figure 1 is a front view of the automatic door device 1. The automatic door device 1 is installed in a building 200. The automatic door device 1 is installed at an entrance 201 of the building 200. Figure 1 shows the automatic door device 1 as viewed from inside the building 200, i.e., from the inside. The building 200 may be a residence such as an apartment building or condominium. The building 200 may also be a facility such as an office building, restaurant, school, hospital, gymnasium, library, community center, train station, airport, or ferry terminal.

[0028] The illustrated automatic door device 1 includes a door 10, a door drive mechanism 20 for driving the door 10, and a detection device 40 for detecting deterioration of the door drive mechanism 20. The door drive mechanism 20 moves the door 10 between a fully closed position and a fully open position.

[0029] In the illustrated automatic door device 1, the door drive mechanism 20 includes a rail base 21 having a rail 215, a door hanger 22 mounted on the top of the door 10, a drive source 24, a drive roller 25, a driven roller 26, and a strip-shaped member 27. The door hanger 22 is hung on the rail 215. The drive source 24 generates a driving force DF for moving the door 10. The drive roller 25 is rotatable by the driving force DF. The driven roller 26 is separated from the drive roller 25 in the longitudinal direction of the rail 215. The strip-shaped member 27 is hung on the drive roller 25 and the driven roller 26 and transmits the rotation of the drive roller 25 to the driven roller 26. The strip-shaped member 27 is connected to the door hanger 22. The automatic door device 1 may also include a connecting mechanism for connecting the door hanger 22 and the strip-shaped member 27.

[0030] As shown in Figure 1, the automatic door device 1 may include a control device 30 for controlling the door drive mechanism 20. The control device 30 may be a computer. The illustrated control device 30 includes a start sensor 31 for starting the door drive mechanism 20 and a control circuit 32 electrically connected to the start sensor 31. The control device 30 may also have a function to monitor for the presence or absence of obstacles at the entrance / exit 201.

[0031] In the illustrated automatic door device 1, the detection device 40 includes, as functional components, an acquisition unit 41, a storage unit 42, and a determination unit 43. The acquisition unit 41 acquires driven rotation information relating to the rotation of the driven roller 26. The acquisition unit 41 may also acquire driven rotation information relating to the rotation of the drive roller 25. The storage unit 42 stores the driven rotation information. The storage unit 42 may also store the driven rotation information. The determination unit 43 determines the deterioration of the door drive mechanism 20. As shown in Figure 8, the acquisition unit 41 and the storage unit 42 may constitute a storage device 50 that stores at least driven rotation information.

[0032] In the examples shown in Figures 1 and 2, the door 10 opens and closes by moving in a first direction D1 from the state shown in Figure 1. In the illustrated examples, the first direction D1 is the opening and closing direction of the door 10. When the door 10 opens, the entrance 201 of the building 200 opens. A person or object can pass through the open entrance 201 by moving in a second direction D2 which is perpendicular to the first direction D1. A person or object can enter the building 200 by passing through the entrance 201 while moving towards the first side in the second direction D2. A person or object can exit the building 200 by passing through the entrance 201 while moving towards the second side in the second direction D2.

[0033] As shown in Figure 1, the automatic door device 1 may include a front cover 61 located above the door 10. The illustrated front cover 61 is located on the first side in a third direction D3 perpendicular to both the first direction D1 and the second direction D2 relative to the door 10. The front cover 61 is attached to the building 200. The illustrated automatic door device 1 includes a pair of front covers 61 attached to the building 200 from both sides in the second direction D2. In the automatic door device 1 shown in Figures 2 to 4, the front cover 61 is removed.

[0034] In the illustrated example, the third direction D3 is parallel to the vertical direction. The first side in the third direction D3 is the upper side (upwards) in the vertical direction. The second side in the third direction D3 is the lower side (downwards) in the vertical direction.

[0035] The automatic door device 1 may include multiple doors 10, as shown in Figure 1. The automatic door device 1 may include double doors 10. The illustrated automatic door device 1 includes, as multiple doors 10, a first door 10A and a second door 10B adjacent to the first door 10A in a first direction D1. The first door 10A and the second door 10B each move in the first direction D1. The first door 10A opens away from the second door 10B in the first direction D1. The second door 10B opens away from the first door 10A in the first direction D1. In the example shown in Figure 1, the multiple doors 10 are in a fully closed state.

[0036] In the example shown in Figures 2 to 4, the rail base 21 has a rail 215 that guides the door 10 in the opening and closing direction. The rail base 21 is attached to the building 200 by three rail base mounting fixtures FM arranged in a first direction D1. When the rail base 21 is attached to the building 200, the rail 215 has its longitudinal direction in the first direction D1. Therefore, the illustrated rail 215 guides the door 10 in the first direction D1. The rail base 21 may be made of a metal such as aluminum.

[0037] In the example shown in Figure 2, the door hanger 22 is mounted on the top of the door 10. The door hanger 22 mounted on the door 10 is located on the first side in the third direction D3 relative to the door 10. The illustrated door hanger 22 is suspended on a rail 215. The door hanger 22 suspended on the rail 215 is capable of traveling along the rail 215. As the door hanger 22 travels along the rail 215, the door 10 attached to the door hanger 22 is capable of moving in the longitudinal direction of the rail 215. Multiple door hangers 22 may be mounted on the door 10. The door 10 shown in Figures 3 and 4 includes a first door hanger 22A and a second door hanger 22B adjacent in the first direction D1.

[0038] In the example shown in Figure 2, the door hanger 22 includes a roller 221 having a rotation axis, a side plate portion 222 that holds the roller 221 from the side, and a bottom plate portion 223 that faces the door 10 from above. The illustrated door hanger 22 is movable on the rail 215 by the rotation of the roller 221. The door 10 is attached to the bottom plate portion 223 of the door hanger 22. The door hanger 22 may also include an auxiliary side plate portion 214 that holds the roller 221 from the side together with the side plate portion 222. The door hanger 22 may also include a restricting member that restricts the upward movement of the door hanger 22.

[0039] In the door hanger 22 shown in Figures 2 to 4, the roller 221 is rotatable around an axis extending in a second direction D2 relative to the other components of the door hanger 22. The roller 221 is in contact with the rail 215 through a contact surface 221a. In the illustrated door hanger 22, the roller 221 has a circular shape in a front view (observed from one side in the second direction D2). The roller 221 may be made of metal such as aluminum or stainless steel. The roller 221 may also be made of resin. As shown in Figures 2 to 4, the door hanger 22 may include multiple rollers 221. In the illustrated example, the door hanger 22 includes two rollers 221 that are separated from each other in a first direction D1.

[0040] In the examples shown in Figures 3 and 4, the connecting mechanism 23 connects the door hanger 22 and the strip-shaped member 27. The strip-shaped member 27 is connected to the door hanger 22 via the connecting mechanism 23. The connecting mechanism 23 transmits force from the strip-shaped member 27 to the door 10 and the door hanger 22. The force from the strip-shaped member 27 is transmitted through the connecting mechanism 23, allowing the door 10 to move in the opening and closing direction between the fully closed position and the fully open position. In the example shown in Figure 2, the connecting mechanism 23 includes a plate-shaped connecting fitting 231 and a grip 232 for gripping the strip-shaped member 27. The connecting fitting 231 and the grip 232 may be screwed to each other, as shown in Figure 2.

[0041] In the illustrated automatic door device 1, the drive source 24, drive roller 25, and driven roller 26 are mounted on the rail base 21. The drive source 24 supplies a driving force DF to the drive roller 25. The illustrated drive source 24 is electrically connected to the control device 30 via wiring KB. The drive source 24 may also be a motor. The motor may rotate in response to a signal transmitted from the control device 30 via wiring KB. The motor may stop rotating in response to a signal transmitted from the control device 30 via wiring KB.

[0042] In the examples shown in Figures 3 and 4, the drive roller 25 is rotatable about an axis AS1 parallel to the second direction D2 while mounted on the rail base 21. The drive roller 25 has an outer circumferential surface 25a facing a direction perpendicular to the second direction D2. The drive roller 25 is rotatable by a driving force DF supplied from the drive source 24. The drive roller 25 may also be a pulley. The outer circumferential surface of the pulley may be made of metal or resin. The drive roller 25 may also be a sprocket. The sprocket may be made of metal. When the door 10 is moved between the fully closed position and the fully open position by the door drive mechanism 20, the drive roller 25 is rotatable in any direction in the circumferential direction about the axis AS1. In Figures 3 and 4, the drive roller 25 is stopped from rotating about the axis AS1.

[0043] As shown in Figure 5, the drive roller 25 may have external teeth 255 on its outer circumferential surface 25a. The outer circumferential surface 25a of the illustrated drive roller 25 is provided with a plurality of external teeth 255 spaced apart in the circumferential direction of the drive roller 25. The external teeth 255 mesh with the internal teeth 275 of the strip-shaped member 27, which will be described later, at the portion of the outer circumferential surface 25a that contacts the strip-shaped member 27.

[0044] In the examples shown in Figures 3 and 4, the driven roller 26 is rotatable about an axis AS2 parallel to the second direction D2 while mounted on the rail base 21. In the illustrated door drive mechanism 20, the rotation axis AS1 of the drive roller 25 and the rotation axis AS2 of the driven roller 26 are parallel to each other. The driven roller 26 has an outer circumferential surface 26a facing in a direction perpendicular to the second direction D2. When the door 10 is moved between the fully closed position and the fully open position by the door drive mechanism 20, the driven roller 26 is rotatable in any direction in the circumferential direction about the axis AS2. In the state shown in Figures 3 and 4, the driven roller 26 has stopped rotating about the axis AS2.

[0045] As shown in Figure 6, the driven roller 26 may have external teeth 265 on its outer circumferential surface 26a. The outer circumferential surface 26a of the illustrated driven roller 26 is provided with a plurality of external teeth 265 spaced apart in the circumferential direction. The external teeth 265 mesh with the internal teeth 275 of the strip-shaped member 27, which will be described later, at the portion of the outer circumferential surface 26a that contacts the strip-shaped member 27.

[0046] In the examples shown in Figures 3 and 4, the strip-shaped member 27 is a circumferential endless belt that is placed over the drive roller 25 and the driven roller 26. The strip-shaped member 27 is not limited to the illustrated examples, and may also be a circumferential chain. In the illustrated state where the strip-shaped member 27 is placed over the drive roller 25 and the driven roller 26, it has an inner circumferential surface 27a facing in a direction perpendicular to the second direction D2. The strip-shaped member 27 is in contact with the outer circumferential surface 25a of the drive roller 25 from the outside in the radial direction of the drive roller 25. The strip-shaped member 27 is in contact with the outer circumferential surface 25a of the drive roller 25 from the inner circumferential surface 27a. The strip-shaped member 27 is in contact with the outer circumferential surface 26a of the driven roller 26 from the outside in the radial direction of the driven roller 26. The strip-shaped member 27 is in contact with the outer circumferential surface 26a of the driven roller 26 from the inner circumferential surface 27a.

[0047] In the examples shown in Figures 3 and 4, the strip-shaped member 27 includes a first portion 271 and a second portion 272 located above the first portion 271, which are positioned between the portion that contacts the drive roller 25 and the portion that contacts the driven roller 26. The illustrated first portion 271 and second portion 272 extend linearly in a first direction D1. The first portion 271 and second portion 272 are in contact with the drive roller 25 at one end in the first direction D1. The first portion 271 and second portion 272 are in contact with the driven roller 26 at the other end in the first direction D1.

[0048] In the illustrated example, the strip-shaped member 27 extends in the circumferential direction of the drive roller 25 in the portion that contacts the drive roller 25. The strip-shaped member 27 extends in the circumferential direction of the driven roller 26 in the portion that contacts the driven roller 26. In the illustrated example, the strip-shaped member 27 extends in the first direction D1 between the drive roller 25 and the driven roller 26.

[0049] The illustrated strip-shaped member 27 revolves when the drive roller 25 rotates. The revolving strip-shaped member 27 moves in the first direction D1 in its first portion 271 and second portion 272. The direction of rotation of the strip-shaped member 27 changes according to the direction of rotation of the drive roller 25. The strip-shaped member 27 revolves such that when the drive roller 25 rotates counterclockwise around its axis, it moves outward in its first portion 271 and inward in its second portion 272. The strip-shaped member 27 revolves such that when the drive roller 25 rotates clockwise around its axis, it moves inward in its first portion 271 and outward in its second portion.

[0050] In the illustrated automatic door device 1, the connecting mechanism 23 is attached to the first part 271 or the second part 272, which moves linearly. In the illustrated example, the connecting mechanism 23 is attached to the first part 271. When the first part 271 moves outward, the door 10 moves together with the door hanger 22 and the connecting mechanism 23 from the fully closed position to the fully open position. When the first part 271 moves inward, the door 10 moves together with the door hanger 22 and the connecting mechanism 23 from the fully open position to the fully closed position.

[0051] As shown in Figures 5 and 6, the strip-shaped member 27 may have internal teeth 275 on its inner circumferential surface 27a. As shown in Figure 5, in a strip-shaped member 27 that is placed on a drive roller 25, the external teeth 255 of the drive roller 25 and the internal teeth 275 of the strip-shaped member 27 may mesh. As shown in Figure 6, in a strip-shaped member 27 that is placed on a driven roller 26, the external teeth 265 of the driven roller 26 and the internal teeth 275 of the strip-shaped member 27 may mesh.

[0052] In the example shown in Figure 1, the activation sensor 31 is mounted on the front cover 61. The illustrated activation sensor 31 detects a person or object approaching the entrance 201 of the building 200. The activation sensor 31 may also detect a person or object attempting to enter the building 200. The activation sensor 31 may also detect a person or object attempting to leave the building 200. The illustrated activation sensor 31 is electrically connected to the control circuit 32 via wiring (not shown). In the control device 30, the control circuit 32 may generate an electrical signal to drive the door drive mechanism 20 based on the detection result of the activation sensor 31.

[0053] In the examples shown in Figures 3 and 4, the control circuit 32 of the control device 30 is housed in a housing 70 attached to the rail base 21. In the illustrated control device 30, the control circuit 32 is attached to the rail base 21 by the housing 70 being attached to the rail base 21.

[0054] The control circuit 32 may include a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The control circuit 32 may also include a storage device such as RAM (Random Access Memory) and ROM (Read Only Memory). The control device 30 may operate by executing a program stored in the storage device of the control circuit 32.

[0055] The operation of the illustrated automatic door device 1 will be explained. Specifically, the door opening operation for opening the door 10 in the illustrated automatic door device 1 will be explained.

[0056] A person attempting to enter building 200 approaches the building's entrance / exit 201. The activation sensor 31 detects the person approaching the building's entrance / exit 201. The detection result from the activation sensor 31 is transmitted to the control circuit 32 via wiring (not shown).

[0057] Based on the detection result of the activation sensor 31, the control circuit 32 generates an electrical signal to open the door 10, which is used to drive the door drive mechanism 20. In the illustrated example, the control circuit 32 generates an electrical signal to operate the drive source 24. The electrical signal generated by the control circuit 32 is transmitted to the drive source 24 via the wiring KB between the control device 30 and the drive source 24.

[0058] The drive source 24 generates a driving force DF based on an electrical signal from the control device 30. The driving force DF is transmitted from the drive source 24 to the drive roller 25. The drive roller 25 begins to rotate around the axis AS1 due to the driving force DF. The illustrated drive roller 25 rotates counterclockwise around the axis AS1 from the state shown in Figure 3.

[0059] The driving force DF is transmitted from the drive roller 25 to the strip-shaped member 27. The driving force DF is transmitted to the strip-shaped member 27 while the external teeth 255 of the rotating drive roller 25 and the internal teeth 275 of the strip-shaped member 27 are engaged. In the illustrated strip-shaped member 27, the first portion 271 is pulled from the end that contacts the drive roller 25 by the drive roller 25 which rotates counterclockwise.

[0060] The driving force DF is transmitted from the strip-shaped member 27 to the driven roller 26. The driving force DF is transmitted to the driven roller 26, pulling the first portion 271 of the strip-shaped member 27, with the internal teeth 275 of the strip-shaped member 27 and the external teeth 265 of the driven roller 26 meshing together.

[0061] As the strip-shaped member 27 is pulled from the first portion 271, the tension exerted by the strip-shaped member 27 on the driven roller 26 in the first portion 271 exceeds the tension exerted by the strip-shaped member 27 on the driven roller 26 in the second portion 272. As a result, the strip-shaped member 27 moves outward from the driven roller 26 toward the drive roller 25 in the first portion 271. In the portion of the strip-shaped member 27 that contacts the outer circumferential surface 25a of the drive roller 25, it moves counterclockwise around the rotation axis AS1 of the drive roller 25. In the second portion 272, the strip-shaped member 27 moves inward from the drive roller 25 toward the driven roller 26. In the portion of the strip-shaped member 27 that contacts the outer circumferential surface 26a of the driven roller 26, it moves counterclockwise around the rotation axis AS2 of the driven roller 26. The strip-shaped member 27 rotates around the drive roller 25 and the driven roller 26 as described above.

[0062] The driven roller 26 begins to rotate as the strip-shaped member 27 rotates. The driven roller 26 shown rotates counterclockwise around the axis AS1 from the state shown in Figure 3.

[0063] The driving force DF is transmitted from the strip-shaped member 27 to the door 10. In the illustrated automatic door device 1, the driving force DF is transmitted from the connecting mechanism 23, which grips the first portion 271 of the strip-shaped member 27, to the door hanger 22 and the door 10. The door 10 moves outward in the first direction D1 together with the first portion 271.

[0064] As described above, the automatic door device 1 performs an opening operation of the door 10. The opening operation includes the movement of the door 10 from the fully open position to the fully closed position, as described above. In the illustrated automatic door device 1, contrary to the above description, a closing operation is performed to close the door 10 by a driving force DF that rotates the drive roller 25 and the driven roller 26 clockwise. In the automatic door device 1 during the closing operation, the closing operation may be interrupted if a person or object attempting to pass is detected. The opening operation may include the movement of the door 10 from the position where the closing operation was interrupted to the fully open position.

[0065] Incidentally, over long periods of operation, the various components of an automatic door system deteriorate. If this deterioration is left unaddressed, the automatic door system will malfunction. In particular, if the deterioration of the door drive mechanism is left unaddressed, critical failures such as door opening and closing problems can occur. From the perspective of suppressing automatic door system failures, it is necessary to detect the deterioration of the door drive mechanism at an early stage.

[0066] Furthermore, the term "deteriorated" in the context of an automatic door system means that even if the performance of that component has decreased, the component can still perform its function in the automatic door system. For example, in the context of a door drive mechanism, "deteriorated" means that even if the performance of at least one component of the door drive mechanism has decreased, the door drive mechanism can still drive the door.

[0067] Figure 7 shows an example of a deteriorated door drive mechanism 20. In Figure 7, the strip-shaped member 27 has stretched compared to when it was first installed. The stretched strip-shaped member 27 is sagging in the first portion 271 and the second portion 272. In Figure 7, the first portion 271 and the second portion 272 before stretching are shown by dashed lines. The strength of the stretched strip-shaped member 27 decreases. If the condition shown in Figure 7 is left untreated, the strength of the strip-shaped member 27 will further decrease and it may break. In the state where the strip-shaped member 27 has broken, the automatic door device 1 will not be able to drive the door 10, which may result in malfunctions such as failure to open or close the door 10.

[0068] Figure 8 shows another example of a deteriorated door drive mechanism 20. In Figure 8, the inner circumferential surface 27a of the strip member 27 is worn compared to its initial state, indicated by the dashed line in the figure. Some of the internal teeth 275 of the strip member 27 are missing on the worn inner circumferential surface 27a. The protruding height of some of the internal teeth 275 of the strip member 27 is reduced on the worn inner circumferential surface 27a. Also in Figure 8, the outer circumferential surface 25a of the drive roller 25 is worn compared to its initial state, indicated by the dashed line in the figure. Some of the external teeth 255 of the drive roller 25 are missing on the worn outer circumferential surface 25a. The protruding height of some of the external teeth 255 of the drive roller 25 is reduced on the worn outer circumferential surface 25a.

[0069] In Figure 8, the driving force DF transmitted by the meshing of the external teeth 255 of the drive roller 25 and the internal teeth 275 of the strip-shaped member 27 is reduced. This reduction in driving force DF may decrease the opening and closing speed of the door 10. Also, in Figure 8, the driving force DF may not be transmitted from the drive roller 25 to the strip-shaped member 27, resulting in slippage where only the drive roller 25 rotates. If the condition shown in Figure 8 is left untreated, the automatic door device 1 may be unable to drive the door 10, leading to malfunctions such as improper opening and closing of the door 10.

[0070] Figure 9 shows another example of a deteriorated door drive mechanism 20: a deteriorated roller 221 on a door hanger 22. The illustrated roller 221 is partially damaged due to prolonged use of the door hanger 22. The illustrated roller 221 has a crack CR that reaches the contact surface 221a. Although not shown, deterioration of the rail 215 causes distortion on the running surface of the rail 215. If the deteriorated roller 221 and rail 215 are left untreated, the automatic door device 1 may experience malfunctions such as the roller 221 falling off the door hanger 22 or the door hanger 22 falling off the rail base 21, resulting in problems with opening and closing the door 10.

[0071] From the perspective of suppressing the occurrence of failures in automatic door systems, JP2020-192954A proposes measuring vibration or sound using sensors as an indicator of deterioration of the door drive mechanism. The sensors are attached to the door hanger or rail base. However, vibration or sound in the door hanger or rail base can be caused by factors other than the opening and closing of the door. Specifically, actions unrelated to the opening and closing of the door, such as collisions of people or objects with the door, or the passage of vehicles near the automatic door system, can be measured as indicators of deterioration of the door drive mechanism. As a result, conventional automatic door systems may have the problem of incorrectly detecting deterioration of the door drive mechanism.

[0072] In contrast, the automatic door device 1 shown in Figures 1 to 20 includes a storage device 50. The storage device 50 includes an acquisition unit 41 that acquires driven rotation information relating to the rotation of the driven roller 26, and a storage unit 42 that stores the driven rotation information. According to this specific example, as will be explained below, deterioration of the door drive mechanism 20 can be detected with high accuracy based on driven rotation information that reflects the opening and closing operation of the door 10 by the door drive mechanism 20. In other words, based on the driven rotation information, false detection of deterioration of the door drive mechanism 20 due to operations unrelated to the opening and closing operation of the door 10 can be suppressed.

[0073] Deterioration of the door drive mechanism 20 may be detected in the automatic door device 1. The illustrated automatic door device 1 includes a detection device 40 capable of detecting deterioration of the door drive mechanism 20. The detection device 40 may also include a data storage device 50. The detection device 40 may detect deterioration of the door drive mechanism 20 based on driven rotation information and drive rotation information stored in the data storage device 50. In the illustrated automatic door device 1, the detection device 40 may detect deterioration of one or more of the door hanger 22, rail base 21, drive roller 25, driven roller 26, and strip member 27.

[0074] Deterioration of the door drive mechanism 20 does not need to be detected by the automatic door device 1. The automatic door device 1 may include a storage device 50 but may not include a detection device 40. Deterioration of the door drive mechanism 20 may be detected by an external computer installed outside the automatic door device 1.

[0075] Based on the detection results of deterioration of the door drive mechanism 20 by the detection device 40 or an external computer, a maintenance and inspection schedule for the automatic door system 1, or a schedule for replacing various parts constituting the door drive mechanism 20, may be formulated. By performing maintenance and inspection or replacing parts before a failure occurs, the occurrence of failures in the automatic door system 1 can be suppressed.

[0076] The detection device 40, including the storage device 50, will be described below, mainly with reference to Figures 3, 4, and 10.

[0077] In the example shown in Figure 10, the detection device 40 includes, as a functional configuration, an acquisition unit 41, a storage unit 42, a determination unit 43, and a notification unit 44 that notifies the determination result of the determination unit 43. As shown by the dashed line in the figure, the acquisition unit 41 and the storage unit 42 may constitute the storage device 50.

[0078] The detection device 40 may be a computer. The computer may include a control circuit 45. That is, the detection device 40 may include a control circuit 45. The control circuit 45 may include a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The control circuit 45 may include a storage device such as RAM (Random Access Memory) and ROM (Read Only Memory). The detection device 40 may operate by executing a program stored in the storage device. The storage device may store multiple programs, such as the first detection program to the fourth detection program described later. The storage device and the programs stored in the storage device may constitute a storage medium. The storage medium may be a tangible medium that is not temporary, such as a CD-ROM. In the illustrated automatic door device 1, the control circuit 45 is housed in the housing 70 together with the control circuit 32 of the control device 30.

[0079] The processor included in the control circuit 45 of the detection device 40 may be the same as the processor included in the control circuit 32 of the control device 30. The storage device included in the control circuit 45 of the detection device 40 may be the same as the storage device included in the control circuit 32 of the control device 30.

[0080] In the illustrated detection device 40, the acquisition unit 41 acquires driven rotation information. The acquisition unit 41 may also acquire drive rotation information. Instead of drive rotation information, the acquisition unit 41 may acquire an electrical signal generated by the control circuit 32 for driving the door drive mechanism 20.

[0081] The acquisition unit 41 may include a sensor capable of acquiring driven rotation information. The acquisition unit 41 may also include a sensor capable of acquiring drive rotation information. In the illustrated detection device 40, the acquisition unit 41 includes a rotary encoder 46 attached to the driven roller 26 as a sensor capable of acquiring driven rotation information. The acquisition unit 41 also includes a rotary encoder 46 attached to the drive roller 25 as a sensor capable of acquiring drive rotation information. Each rotary encoder 46 is electrically connected to the control circuit 45 of the detection device 40. The rotary encoder 46 may be of incremental or absolute type. In the illustrated example, the detection device 40 includes an incremental rotary encoder 46. Unlike the illustrated example, the sensor capable of acquiring driven rotation information and the sensor capable of acquiring drive rotation information may be Hall ICs.

[0082] The acquisition unit 41 may acquire the rotational speed of the driven roller 26 as driven rotation information. The acquisition unit 41 may acquire the direction of rotation of the driven roller 26 as driven rotation information. In the detection device 40 shown in Figures 3 and 4, the acquisition unit 41 may acquire that the rotation of the driven roller 26 around the axis AS2 is clockwise. The acquisition unit 41 may acquire that the rotation of the driven roller 26 around the axis AS2 is counterclockwise.

[0083] The acquisition unit 41 may acquire the rotational speed of the drive roller 25 as drive rotation information. The acquisition unit 41 may acquire the direction of rotation of the drive roller 25 as drive rotation information. In the detection device 40 shown in Figures 3 and 4, the acquisition unit 41 may acquire that the rotation of the drive roller 25 around the axis AS1 is clockwise. The acquisition unit 41 may acquire that the rotation of the drive roller 25 around the axis AS1 is counterclockwise.

[0084] The acquisition unit 41 may acquire an output waveform G as driven rotation information or driving rotation information, as shown in the graph in Figure 17. In the graph of the output waveform G shown in Figure 17, the horizontal axis represents time. In the graph of the output waveform G shown in Figure 17, the vertical axis represents the measured voltage value. As shown in Figure 17, the output waveform G may be a square wave. The output waveform G may include a high output value GH and a low output value GL.

[0085] The illustrated rotary encoder 46 may include a rotating disc that rotates coaxially with the drive roller 25 or the driven roller 26. In the example shown in Figures 3 and 4, the rotating disc rotates together with the drive roller 25 or the driven roller 26 about an axis parallel to the second direction D2. The rotating disc may have a plurality of slits spaced regularly apart in its circumferential direction. The rotary encoder may include a detection unit for detecting such rotation of the rotating disc as an output waveform as shown in Figure 17. The detection unit may include a light-emitting unit such as a diode and a light-receiving unit for detecting the light emitted by the light-emitting unit. The light-receiving unit may output the intensity of the detected light as an electrical signal. The rotating disc is located between the light-emitting unit and the light-receiving unit in the axial direction along the rotation axis. In the illustrated rotary encoder 46, the rotating disc is located between the light-emitting unit and the light-receiving unit in the second direction D2.

[0086] The light-receiving unit may detect light emitted from the light-emitting unit that has passed through the aforementioned slits on the rotating disc. The light-receiving unit may suppress the detection of light other than that emitted from the light-emitting unit. When the light-receiving unit detects light emitted from the light-emitting unit, it may output a high-power value GH in the output waveform G shown in Figure 17 as an electrical signal. When the light-receiving unit does not detect light emitted from the light-emitting unit, it may output a low-power value GL in the output waveform G shown in Figure 17 as an electrical signal.

[0087] The memory unit 42 stores drive rotation information and driven rotation information. The memory unit 42 may be the main memory as described above. The memory unit 42 may be the auxiliary memory as described above.

[0088] The determination unit 43 determines the deterioration of the door drive mechanism 20 based on the driven rotation information stored in the memory unit 42. The determination unit 43 may also determine the deterioration of the door drive mechanism 20 based on the driven rotation information and drive rotation information stored in the memory unit 42. The determination unit 43 may also determine changes in the state of the rotation of the driven roller 26. The determination unit 43 may also determine changes in the state of the rotation of the drive roller 25. The determination unit 43 may be the processor described above.

[0089] As shown in Figure 10, the notification unit 44 may transmit the determination result of the determination unit 43 to an external server separate from the detection device 40. The external server may be a management system for managing multiple automatic door devices 1, or a management system for a building 200 in which the automatic door devices 1 are installed. The notification unit 44 may be the processor described above.

[0090] The operation of the illustrated detection device 40 will be described. Specifically, the method for detecting deterioration of the door drive mechanism 20 using the illustrated detection device 40 will be described. The illustrated detection device 40 detects deterioration of the door drive mechanism 20 by executing a program stored in its memory device.

[0091] First, referring mainly to Figures 11 to 14, a program for detecting malfunctions in the automatic door device 1 and deterioration of the door drive mechanism 20 based on drive rotation information and driven rotation information will be described. A first detection program and a second detection program are given as examples of such programs. The first detection program and the second detection program may be executed during the opening operation of the door drive mechanism 20, or during the closing operation of the door drive mechanism 20.

[0092] Referring to Figure 11, the detection mechanism for deterioration of the door drive mechanism 20 by the first detection program will be explained. In the first detection program, deterioration of the door drive mechanism 20 is detected by the delay time calculated based on the driven rotation information and the driving rotation information. The delay time is the time from the start of rotation of the driving roller 25 to the start of rotation of the driven roller 26. In Figure 11, the change in rotational speed of the driving roller 25 is shown as line C1. In Figure 11, the change in rotational speed of the door drive mechanism 20 in a normal state is shown as line C2. In Figure 11, the change in rotational speed of the deteriorated door drive mechanism 20 is shown as line C3. As shown in Figure 11, the above-mentioned delay time increases in the deteriorated door drive mechanism 20. In particular, the delay time tends to increase due to the stretching and wear of the strip member 27 and the wear of the driving roller 25. In the example shown in Figure 11, the delay time t3 in the deteriorated door drive mechanism 20 is greater than the delay time t2 in the door drive mechanism 20 in a normal state.

[0093] The operation of the first detection program will be described with reference to Figure 12. The first detection program may be executed based on an electrical signal from the control device 30 to activate the drive source 24. In the illustrated automatic door device 1, the first detection program starts when the control device 30 sends a signal to rotate the motor.

[0094] <s11> In step S11, the acquisition unit 41 acquires driven-related information and drive rotation information. The acquisition unit 41 acquires the rotation speed of the driven roller 26 as driven-related information. The acquisition unit 41 acquires the rotation speed of the drive roller 25 as drive rotation information.

[0095] <s12> In step S12, the determination unit 43 detects the start of rotation of the drive roller 25. The determination unit 43 detects the start of rotation of the drive roller 25 based on the drive rotation information. The determination unit 43 may also detect the start of rotation of the drive roller 25 based on the rotation speed of the drive roller 25 detected by the acquisition unit 41. The determination unit 43 may also detect the start of rotation of the drive roller 25 when it detects a rotation of 1 rpm (revolutions per minute) or more of the drive roller 25. The rotation speed of the drive roller 25 may be stored in the storage unit 42 as drive rotation information.

[0096] <s13> In step S13, the determination unit 43 detects the start of rotation of the driven roller 26. The determination unit 43 detects the start of rotation of the driven roller 26 based on the driven rotation information. The determination unit 43 may also detect the start of rotation of the driven roller 26 based on the rotation speed of the driven roller 26 detected by the acquisition unit 41. The determination unit 43 may also detect the start of rotation of the driven roller 26 when it detects that the driven roller 26 is rotating at 1 rpm or more. The rotation speed of the driven roller 26 may be stored in the storage unit 42 as driven rotation information.

[0097] <s14> In step S14, the determination unit 43 calculates the delay time from the start of rotation of the drive roller 25 to the start of rotation of the driven roller 26. The determination unit 43 calculates the above delay time based on the driven rotation information acquired by the acquisition unit 41 and the drive rotation information acquired by the acquisition unit 41. The determination unit 43 may also calculate the delay time by calculating the time from the start of rotation of the drive roller 25 detected in step S12 to the start of rotation of the driven roller 26 detected in step S13. The delay time calculated by the determination unit 43 may be stored in the storage unit 42.

[0098] <s15> In step S15, the determination unit 43 determines whether the calculated delay time is below a threshold. The delay time threshold may be 0.01 seconds or 0.1 seconds. The delay time threshold may be stored in the storage unit 42. If the calculated delay time is below the threshold, the following step S16 is executed. If the calculated delay time is not below the threshold, i.e., it is greater than or equal to the threshold, the following step S17 is executed.

[0099] <s16> In step S16, the determination unit 43 determines that the door drive mechanism 20 is in a normal state. After step S16 is executed, the first detection program ends.

[0100] <s17> In step S17, the determination unit 43 determines that the door drive mechanism 20 is degraded. Information regarding the degradation of the door drive mechanism 20 may be stored in the storage unit 42. Information regarding the degradation of the door drive mechanism 20 may also be transmitted from the notification unit 44 to an external server. After step S17 is executed, the first detection program terminates.

[0101] As described above, the detection device 40 detects deterioration of the door drive mechanism 20 based on the delay time. According to the first detection program, the elongation of the strip-shaped member 27, wear on the inner circumferential surface 27a of the strip-shaped member 27, wear on the outer circumferential surface 25a of the drive roller 25, etc., can be detected with high accuracy. The first detection program may be stopped if the door closing operation of the door drive mechanism 20 is interrupted. After being stopped, the first detection program may be started from step S12.

[0102] In the first detection program described above, the rotational speed of the drive roller 25 was used as the drive rotation information in calculating the delay time until the driven roller 26 starts rotating, but this is not the only option. Instead of the drive rotation information, an electrical signal generated by the control circuit 32 for driving the door drive mechanism 20 may be used to calculate the delay time until the driven roller 26 starts rotating.

[0103] Referring to Figure 13, the detection mechanism for deterioration of the door drive mechanism 20 by the second detection program will be explained. In the second detection program, deterioration of the door drive mechanism 20 is detected based on a comparison of the rotational speed of the drive roller 25 and the rotational speed of the driven roller 26. Figure 13 shows the changes in the rotational speed of the drive roller 25 and the driven roller 26 in a deteriorated door drive mechanism 20, shown by two curves. Curve C4 shows the change in the rotational speed of the drive roller 25. Curve C5 shows the change in the rotational speed of the driven roller 26. As shown in Figure 13, the drive roller 25 and the driven roller 26 have a constant speed section SA in which they operate at a stable rotational speed due to the driving force DF. In the illustrated example, the drive roller 25, which starts rotating before the driven roller 26, reaches the constant speed section SA before the driven roller 26.

[0104] As shown in Figure 13, in a deteriorated door drive mechanism 20, a phenomenon may occur in which the rotational speed of the driven roller 26 temporarily decreases compared to the rotational speed of the drive roller 25. In particular, such a temporary decrease in the rotational speed of the driven roller 26 is likely to occur due to a decrease in the driving force DF between the drive roller 25 and the strip-shaped member 27, caused by the wear of the drive roller 25 and the strip-shaped member 27 as described above.

[0105] Referring to Figure 14, the operation of the second detection program will be explained. The second detection program detects deterioration of the door drive mechanism 20 by comparing the rotational speed of the drive roller 25 with the rotational speed of the driven roller 26. From the viewpoint of suppressing the influence of the aforementioned delay time on the comparison results, the second detection program may operate in the constant speed section SA of the driven roller 26. This suppresses the difference in rotational speed between the two rollers due to the delay time, and enables stable detection of the difference in rotational speed due to deterioration of the door drive mechanism 20.

[0106] The second detection program may be started based on the driven rotation information and the driven rotation information. In the illustrated detection device 40, the second detection program is started when the determination unit 43 detects the start of rotation of the driven roller 25 and the driven roller 26.

[0107] <s21> In step S21, the acquisition unit 41 acquires driven-related information and drive rotation information. The acquisition unit 41 acquires the rotation speed of the driven roller 26 as driven-related information. The acquisition unit 41 acquires the rotation speed of the drive roller 25 as drive rotation information.

[0108] <s22> In step S22, the determination unit 43 determines that the driven roller 26 has reached the constant speed section SA. The determination unit 43 may determine that the driven roller 26 has reached the constant speed section SA based on the driven rotation information acquired by the acquisition unit 41. The driven rotation information may also be the amount of variation in the rotational speed of the driven roller 26. The amount of variation in the rotational speed of the driven roller 26 may also be the difference between the rotational speed acquired by the acquisition unit 41 and past rotational speeds stored in the storage unit 42. The determination unit 43 may determine that the driven roller 26 has reached the constant speed section SA when the amount of variation in the rotational speed of the driven roller 26 has stabilized.

[0109] <s23> In step S23, the determination unit 43 calculates the difference between the rotational speed of the drive roller 25 and the rotational speed of the driven roller 26.

[0110] <s24> In step S24, the determination unit 43 determines whether the difference in rotational speed calculated in step S23 is below a threshold for a predetermined period of time. If the difference in rotational speed between the drive roller 25 and the driven roller 26 exceeds the threshold for a predetermined period of time, the following step S25 is executed, and then step S26 is executed. If the difference in rotational speed between the drive roller 25 and the driven roller 26 remains below the threshold for a predetermined period of time, the following step S26 is executed.

[0111] <s25> In step S25, the determination unit 43 increments the value of the counter related to the deterioration of the door drive mechanism 20 by one. The value of the counter may be stored in the storage unit 42. The storage unit 42 may store the value of the counter before the start of the second detection program.

[0112] <s26> In step S26, the determination unit 43 determines that the driven roller 26 has stopped. The determination unit 43 may determine that the driven roller 26 has stopped based on the driven rotation information. Specifically, the determination unit 43 may determine that the driven roller 26 has stopped based on the rotation speed of the driven roller 26. If the determination unit 43 determines that the driven roller 26 has stopped in step S26, the following step S27 is executed. If the determination unit 43 does not determine that the driven roller 26 has stopped in step S26, steps S23 and S24 described above are executed again.

[0113] <s27> In step S27, the determination unit 43 determines whether the counter value is below the threshold. If the counter value is below the threshold, the following step S28 is executed. If the counter value is not below the threshold, i.e., is above the threshold, the following step S29 is executed.

[0114] <s28> In step S28, the determination unit 43 determines that the door drive mechanism 20 is in a normal state. After step S28 is executed, the second detection program ends.

[0115] <s29> In step S29, the determination unit 43 determines that the door drive mechanism 20 is degraded. Information regarding the degradation of the door drive mechanism 20 may be stored in the storage unit 42. Information regarding the degradation of the door drive mechanism 20 may also be transmitted from the notification unit 44 to an external server. After step S29 is executed, the second detection program terminates.

[0116] As described above, the detection device 40 detects deterioration of the door drive mechanism 20 based on a comparison of the rotational speed of the drive roller 25 and the rotational speed of the driven roller 26. The second detection program can accurately detect wear on the drive roller 25 and the strip-shaped member 27. The second detection program may be stopped if the door closing operation of the door drive mechanism 20 is interrupted. The first detection program may be started from step S12 after being stopped.

[0117] Next, a program for detecting deterioration of the door drive mechanism 20 based on driven rotation information will be described. The following third and fourth detection programs are examples of such programs. The third and fourth detection programs may be executed during the opening operation of the door drive mechanism 20 or during the closing operation.

[0118] Referring to Figure 15, the detection mechanism for deterioration of the door drive mechanism 20 by the third detection program will be explained. In the third detection program, deterioration of the door drive mechanism 20 is detected based on driven rotation information stored in the memory unit 42. More specifically, in the third detection program, deterioration of the door drive mechanism 20 is detected based on a comparison between the rotation speed of the driven roller 26 acquired by the acquisition unit 41 and the rotation speed of the driven roller 26 stored in the memory unit 42.

[0119] In the third detection program, deterioration of the door drive mechanism 20 is detected based on the rotational fluctuations of the driven roller 26 during the opening and closing operation of the door 10. In the third detection program, the rotational fluctuations of the driven roller 26 are calculated as the difference between the acquired rotational speed of the driven roller 26 acquired by the acquisition unit 41 and the stored rotational speed of the driven roller 26 immediately before the acquired rotational speed. The stored rotational speed is stored in the storage unit 42. Figure 15 shows the change in the rotational speed of the driven roller 26 in the automatic door device 1 where the door drive mechanism 20 has deteriorated, as curve C6.

[0120] Referring to Figure 9, due to various factors such as damage to the door roller 221 in the door hanger 22 and distortion of the rail 215, pulse-like rotational fluctuations occur in the driven roller 26, as shown by curve C6 in Figure 15. The third detection program detects the deterioration of the door drive mechanism 20 due to these factors by detecting the rotational fluctuations of the driven roller 26.

[0121] Referring to Figure 16, the operation of the third detection program will be explained. From the viewpoint of suppressing rotational fluctuations due to acceleration and deceleration of the driven roller 26, the third detection program may operate in the constant speed section SA of the driven roller 26.

[0122] The third detection program may be started based on driven rotation information. In the illustrated detection device 40, the third detection program is started when the determination unit 43 detects that the driven roller 26 has reached the constant speed section SA. This prevents rotational fluctuations due to acceleration of the driven roller 26 from being judged as rotational fluctuations due to the detection of deterioration of the door drive mechanism 20.

[0123] <s31> In step S31, the acquisition unit 41 acquires driven rotation information. The acquisition unit 41 acquires the rotation speed of the driven roller 26 as the acquired rotation speed.

[0124] <s32> In step S32, the memory unit 42 stores the rotational speed of the driven roller 26 acquired by the acquisition unit 41 as the stored rotational speed.

[0125] <s33> In step S33, the determination unit 43 calculates the difference between the stored rotation speed and the acquired rotation speed as a rotational fluctuation.

[0126] <s34> In step S34, the determination unit 43 determines whether the calculated rotational fluctuation is below the threshold. If the calculated rotational fluctuation exceeds the threshold, the following step S35 is executed, followed by step S36. If the calculated rotational fluctuation is below the threshold, the following step S36 is executed.

[0127] <s35> In step S35, the determination unit 43 increments the value of the counter related to the deterioration of the door drive mechanism 20 by one. The value of the counter may be stored in the storage unit 42. The storage unit 42 may store the value of the counter before the start of the third detection program.

[0128] <s36> In step S36, the determination unit 43 determines that the driven roller 26 has stopped. The determination unit 43 may determine that the driven roller 26 has stopped based on the driven rotation information. Specifically, the determination unit 43 may determine that the driven roller 26 has stopped based on the rotation speed of the driven roller 26. If the determination unit 43 determines that the driven roller 26 has stopped in step S36, the following step S37 is executed. If the determination unit 43 does not determine that the driven roller 26 has stopped in step S36, steps S31 to S34 described above are executed again.

[0129] <s37> In step S37, the determination unit 43 determines whether the counter value is below the threshold. If the counter value is below the threshold, the following step S38 is executed. If the counter value is not below the threshold, i.e., is above the threshold, the following step S39 is executed.

[0130] <s38> In step S38, the determination unit 43 determines that the door drive mechanism 20 is in a normal state. After step S38 is executed, the third detection program ends.

[0131] <s39> In step S39, the determination unit 43 determines that the door drive mechanism 20 is degraded. Information regarding the degradation of the door drive mechanism 20 may be stored in the storage unit 42. Information regarding the degradation of the door drive mechanism 20 may also be transmitted from the notification unit 44 to an external server. After step S39 is executed, the third detection program terminates.

[0132] As described above, the detection device 40 detects deterioration of the door drive mechanism 20 by executing the third detection program, based on a comparison between the rotational speed of the driven roller 26 acquired by the acquisition unit 41 and the rotational speed of the driven roller 26 stored in the storage unit 42. The third detection program can accurately detect deterioration of the door drive mechanism 20, such as damage to the door roller 221 or distortion of the rail 215.

[0133] The detection mechanism for deterioration of the door drive mechanism 20 by the fourth detection program will be explained with reference to Figures 17 and 18. In the fourth detection program, deterioration of the door drive mechanism 20 is detected based on a comparison between the current driven rotation information acquired by the acquisition unit 41 and the past driven rotation information stored by the storage unit 42. More specifically, in the fourth detection program, deterioration of the door drive mechanism 20 is detected based on a comparison between the current output waveform G of the acquisition unit 41 and the past output waveform G of the acquisition unit 41 stored by the storage unit 42. Figure 17 shows the past output waveform stored by the storage unit 42. Figure 18 shows the current output waveform acquired by the acquisition unit 41.

[0134] The storage unit 42 may store, as past driven rotation information, the output waveform G of the acquisition unit 41 due to the operation of the door drive mechanism 20 on the day the automatic door device 1 was installed. The storage unit 42 may also store, as past driven rotation information, the output waveform of the acquisition unit 41 due to the operation of the door drive mechanism 20 in the automatic door device 1 after a predetermined period has elapsed since installation.

[0135] Figure 18 shows the output waveform of the acquisition unit 41 acquired in a deteriorated door drive mechanism 20. Various factors such as damage to the door roller 221 in the door hanger 22, distortion of the rail 215, elongation of the strip member 27, wear on the inner surface 27a of the strip member 27, and wear on the outer surface 25a of the drive roller 25 can reduce the rotational speed of the driven roller 26 during rotation. As a result, as shown in Figures 17 and 18, in a deteriorated door drive mechanism 20, the duration of high output value GH or low output value GL in the output waveform G may increase compared to a normal door drive mechanism 20. The fourth detection program detects the deterioration of the door drive mechanism 20 by detecting the increase in the duration of high output value GH or low output value GL in the output waveform G.

[0136] The operation of the fourth detection program will be explained with reference to Figure 19. In the fourth detection program, past output waveforms G of the acquisition unit 41 and the current output waveform G of the acquisition unit 41 are compared. Between the two output waveforms G, the average duration of the high output value GH and the average duration of the low output value GL are compared. From the viewpoint of suppressing rotational fluctuations due to acceleration and deceleration of the driven roller 26, the third detection program may operate in the constant speed section SA of the driven roller 26.

[0137] <s41> In step S41, the acquisition unit 41 acquires the rotational speed of the driven roller 26 as driven rotation information.

[0138] <s42> In step S42, the determination unit 43 determines that the driven roller 26 has reached the constant speed section SA. The determination unit 43 may determine that the driven roller 26 has reached the constant speed section SA based on the driven rotation information acquired by the acquisition unit 41. The driven rotation information may also be the amount of variation in the rotational speed of the driven roller 26. The amount of variation in the rotational speed of the driven roller 26 may also be the difference between the rotational speed acquired by the acquisition unit 41 and past rotational speeds stored in the storage unit 42. The determination unit 43 may determine that the driven roller 26 has reached the constant speed section SA when the amount of variation in the rotational speed of the driven roller 26 has stabilized.

[0139] <s43> In step S43, the acquisition unit 41 acquires driven rotation information and the output waveform G of the driven roller 26. The output waveform G may be stored in the storage unit 42.

[0140] <s44> In step S44, the determination unit 43 identifies the duration of the high-output value GH and the duration of the low-output value GL from the output waveform G acquired by the acquisition unit 41 over a predetermined period of time. The determination unit 43 may also calculate the duration of the high-output value GH and the low-output value GL in the output waveform G measured over a predetermined period of time. The determination unit 43 calculates the average duration of the high-output value GH based on the durations of multiple high-output values ​​GH. The determination unit 43 calculates the average duration of the low-output value GL based on the durations of multiple low-output values ​​GL.

[0141] <s45> In step S45, the determination unit 43 compares the average duration calculated in step S44 with the past average durations stored in the memory unit 42. The determination unit 43 calculates the difference between the average duration of the high-power value GH calculated in step S44 and the past average durations of the high-power value GH stored in the memory unit 42. The determination unit 43 also calculates the difference between the average duration of the low-power value GL calculated in step S44 and the past average durations of the high-power value GL stored in the memory unit 42.

[0142] <s46> In step S46, the determination unit 43 determines whether the calculated difference in average duration falls below a threshold. The threshold for the difference in average duration may be stored in the storage unit 42. If the calculated difference in average duration falls below the threshold, the following step S47 is executed. If the calculated difference in average duration does not fall below the threshold, i.e., it is greater than or equal to the threshold, the following step S48 is executed.

[0143] <s47> In step S47, the determination unit 43 determines that the door drive mechanism 20 is in a normal state. After step S47 is executed, the fourth detection program ends.

[0144] <s48> In step S48, the determination unit 43 determines that the door drive mechanism 20 is degraded. Information regarding the degradation of the door drive mechanism 20 may be stored in the storage unit 42. Information regarding the degradation of the door drive mechanism 20 may also be transmitted from the notification unit 44 to an external server. After step S48 is executed, the fourth detection program terminates.

[0145] As described above, the detection device 40 detects deterioration of the door drive mechanism 20 based on the output waveform G acquired by the acquisition unit 41 by executing the fourth detection program. The fourth detection program can accurately detect deterioration of the door drive mechanism 20 due to the factors described above.

[0146] In the embodiment described above, the automatic door device 1 includes a door 10 and a door drive mechanism 20 for driving the door 10. The door drive mechanism 20 includes a rail base 21 having a rail 215 that guides the door 10 in the opening and closing direction, a door hanger 22 attached to the top of the door 10 and hung on the rail base 21, a drive source 24 that generates a driving force DF for moving the door 10, a drive roller 25 that is rotatable by the driving force DF, a driven roller 26 that is separated from the drive roller 25 in the longitudinal direction of the rail 215, and a drive roller 25 that is hung on the drive roller 25 and the driven roller 26, transmits the rotation of the drive roller 25 to the driven roller 26, and is connected to the door hanger 22 to move the door 10 in the opening and closing direction. The automatic door device 1 includes an acquisition unit 41 that acquires driven rotation information relating to the rotation of the driven roller 26, and a storage unit 42 that stores the driven rotation information.

[0147] Furthermore, in the embodiment described above, the method for detecting deterioration of the door drive mechanism 20 includes the steps of: acquiring driven rotation information regarding the rotation of the drive roller 25 in a door drive mechanism 20 which includes a rail base 21 having a rail 215 that guides the door 10 in the opening and closing direction, a door hanger 22 attached to the upper part of the door 10 and hung on the rail base 21, a drive source 24 that generates a driving force DF for moving the door 10, a drive roller 25 that is rotatable by the driving force DF, a driven roller 26 that is separated from the drive roller 25 in the longitudinal direction of the rail 215, and a drive roller 25 that is hung on the drive roller 25 and the driven roller 26 and transmits the rotation of the drive roller 25 to the driven roller 26 and is connected to the door hanger 22 to move the door 10 in the opening and closing direction; and determining deterioration of the door drive mechanism 20 based on the driven rotation information.

[0148] Furthermore, in the embodiment described above, the program causes the computer to perform the following steps: acquire driven rotation information regarding the rotation of the drive roller 25 in a door drive mechanism 20 which includes a rail base 21 having a rail 215 that guides the door 10 in the opening and closing direction, a door hanger 22 attached to the top of the door 10 and hung on the rail base 21, a drive source 24 that generates a driving force DF for moving the door 10, a drive roller 25 that is rotatable by the driving force DF, a driven roller 26 that is separated from the drive roller 25 in the longitudinal direction of the rail 215, and a drive roller 25 that is hung on the drive roller 25 and the driven roller 26 and transmits the rotation of the drive roller 25 to the driven roller 26 and is connected to the door hanger 22 to move the door 10 in the opening and closing direction; and determine the deterioration of the door drive mechanism 20 based on the driven rotation information.

[0149] Furthermore, in the embodiment described above, the storage medium stores a program for causing a computer to perform the following steps: acquire driven rotation information regarding the rotation of the drive roller 25 in a door drive mechanism 20, which includes a rail base 21 having a rail 215 that guides the door 10 in the opening and closing direction, a door hanger 22 attached to the top of the door 10 and hung on the rail base 21, a drive source 24 that generates a driving force DF for moving the door 10, a drive roller 25 that is rotatable by the driving force DF, a driven roller 26 that is separated from the drive roller 25 in the longitudinal direction of the rail 215, and a drive roller 25 that is hung on the drive roller 25 and the driven roller 26 to transmit the rotation of the drive roller 25 to the driven roller 26 and is connected to the door hanger 22 to move the door 10 in the opening and closing direction; and determine the deterioration of the door drive mechanism 20 based on the driven rotation information.

[0150] According to this embodiment, by accumulating driven rotation information as an indicator of deterioration of the door drive mechanism 20, fluctuations in the deterioration indicator due to operations other than the opening and closing of the door 10 can be suppressed. This suppresses false detections when detecting deterioration of the door drive mechanism 20 using driven rotation information. Therefore, by detecting the deterioration of the door drive mechanism 20 with high accuracy, the occurrence of failures of the automatic door device 1, including the door drive mechanism 20, can be effectively suppressed.

[0151] While one embodiment has been described with reference to specific examples, the above-mentioned example does not limit this embodiment. The above-described embodiment can be implemented in various other examples, and various omissions, substitutions, modifications, and additions can be made without departing from its essence.

[0152] The automatic door device 1 described above included a detection device 40 for detecting deterioration of the door drive mechanism 20. The deterioration of the door drive mechanism 20 was detected in the automatic door device 1. However, the deterioration of the door drive mechanism 20 may also be detected at a remote location away from the installation location of the automatic door device 1, as in the automatic door system 100 shown in Figure 20.

[0153] In the example shown in Figure 20, the automatic door system 100 includes, as functional components, an acquisition unit 101, a storage unit 102, a determination unit 103, and a display unit 104. The acquisition unit 101 acquires driven rotation information. The storage unit 102 stores the driven rotation information. The determination unit 103 determines the deterioration of the door drive mechanism 20 based on the driven rotation information. The display unit 104 displays the determination result of the determination unit 103. The automatic door system 100 may also have a function to monitor a plurality of automatic door devices 1.

[0154] The automatic door system 100 may be a computer. The automatic door system 100 may be a computer installed in a location separate from the building 200 in which the automatic door device 1 is installed. The computer may include a control circuit. The automatic door system 100 may include an output device such as a display. The display unit 104 may also be an output device. In other words, the automatic door system 100 may include a control circuit. The control circuit may include a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The control circuit may include a storage device such as RAM (Random Access Memory) and ROM (Read Only Memory). The automatic door system 100 may operate by executing a program stored in the storage device. The storage device may store multiple programs, such as the first detection program to the fourth detection program described above.

[0155] The acquisition unit 101 acquires driven rotation information from the storage device 50 included in the automatic door device 1. As shown in Figure 20, the acquisition unit 101 may acquire driven rotation information from multiple automatic door devices 1. The illustrated acquisition unit 101 acquires driven rotation information from the storage device 50 included in each of the multiple automatic door devices 1. The acquisition unit 101 may also acquire driven rotation information from the storage device 50.

[0156] In the illustrated automatic door system 100, the storage unit 102 and the display unit 104 may be omitted. That is, the automatic door system 100 may include an acquisition unit 101 that acquires driven rotation information and a determination unit 103 that determines the deterioration of the door drive mechanism 20 based on the driven rotation information.

[0157] Among the embodiments disclosed herein, those composed of multiple objects may be integrated, and conversely, those composed of a single object may be divided into multiple objects. Whether or not they are integrated, the invention can be constructed in a way that achieves its objective.

[0158] In the embodiments disclosed herein, those in which multiple functions are provided in a distributed manner may have some or all of those multiple functions integrated into a single unit, and conversely, those in which multiple functions are integrated may have some or all of those functions provided in a distributed manner. Whether the functions are integrated or distributed, the configuration should be such that the objective of the invention can be achieved. [Explanation of Symbols]

[0159] 1: Automatic door device, 10: Door, 20: Door drive mechanism, 21: Rail base, 22: Door hanger, 24: Drive source, 25: Drive roller, 26: Driven roller, 27: Strip-shaped member, 30: Control device, 40: Detection device, 41: Acquisition unit, 42: Storage unit, 43: Judgment unit, 44: Notification unit, 50: Storage device, 100: Automatic door system, 101: Acquisition unit, 102: Storage unit, 103: Judgment unit, DF: Driving force

Claims

1. The door and A door drive mechanism comprising: a rail base having a rail for guiding the door in the opening and closing direction; a door hanger attached to the upper part of the door and hung on the rail; a drive source that generates a driving force for moving the door; a drive roller rotatable by the driving force; a driven roller located from the drive roller in the longitudinal direction of the rail; and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction; An acquisition unit that acquires driven rotation information relating to the rotation of the driven roller, An automatic door device comprising a storage unit for storing the aforementioned driven rotation information.

2. The acquisition unit acquires drive rotation information relating to the rotation of the drive roller, The automatic door device according to claim 1, wherein the storage unit stores the drive rotation information.

3. The automatic door device according to claim 1, further comprising a determination unit that determines deterioration of the door drive mechanism based on the driven rotation information stored in the memory unit.

4. The door drive mechanism is equipped with a determination unit for determining deterioration, The driven rotation information includes the output waveform acquired by the acquisition unit. The automatic door device according to claim 1, wherein the determination unit determines the deterioration based on the output waveform.

5. The door drive mechanism is equipped with a determination unit for determining deterioration, The driven rotation information includes the rotation speed of the driven roller. The aforementioned drive rotation information includes the rotation speed of the drive roller, The automatic door device according to claim 2, wherein the determination unit determines the deterioration based on a comparison of the rotational speed of the drive roller and the rotational speed of the driven roller.

6. The door drive mechanism is equipped with a determination unit for determining deterioration, The automatic door device according to claim 2, wherein the determination unit calculates a delay time from when the drive roller starts rotating until when the driven roller starts rotating, based on the drive rotation information and the driven rotation information, and determines the deterioration based on the delay time.

7. The automatic door device according to any one of claims 3 to 6, further comprising a notification unit for notifying the determination result of the determination unit.

8. A door drive mechanism comprising: a rail base having a rail for guiding the door in the opening and closing direction; a door hanger attached to the upper part of the door and hung on the rail; a drive source that generates a driving force for moving the door; a drive roller rotatable by the driving force; a driven roller located longitudinally from the drive roller in the rail; and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction; and an acquisition unit that acquires driven rotation information relating to the rotation of the driven roller in a door drive mechanism, An automatic door system comprising: a determination unit that determines the deterioration of the door drive mechanism based on the driven rotation information.

9. A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, A method for detecting deterioration of a door drive mechanism, comprising the step of determining deterioration of the door drive mechanism based on the driven rotation information.

10. A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, A program for causing a computer to perform the steps of determining deterioration of the door drive mechanism based on the driven rotation information.

11. A step of acquiring driven rotation information relating to the rotation of a driven roller in a door drive mechanism, which includes a rail base having a rail for guiding the door in the opening and closing direction, a door hanger attached to the upper part of the door and hung on the rail, a drive source that generates a driving force for moving the door, a drive roller rotatable by the driving force, a driven roller located longitudinally from the drive roller in the rail direction, and a strip-shaped member that is hung on the drive roller and the driven roller, transmits the rotation of the drive roller to the driven roller, and is connected to the door hanger to move the door in the opening and closing direction, A storage medium that stores a program for causing a computer to perform the steps of determining deterioration of the door drive mechanism based on the driven rotation information.

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