Door open / close status display for each floor

Abstract

To provide a device for displaying a door open and closed state on each floor which displays the door open and closed state on each floor to allow a person in a car to confirm it.SOLUTION: A device 100 for displaying a door open and closed state on each floor which displays the door open and closed state on each floor of a construction elevator, the device comprising: a door open and close detection unit 21 on each floor for detecting the door open and closed state on each floor provided on each floor; a transmission control unit 11 for receiving a signal from the door open and close detection unit on each floor; and a door open and close display unit 13 on each floor provided in a car 10, for displaying the door open and closed state on each floor received by the transmission control unit, in which the door open and close detection units on all floors and the transmission control unit are connected by a door open and closed state transmission line 23 on each floor to carry out multiple transmission of the door open and closed state on each floor.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an elevator for construction work used at construction sites, and more particularly to a door open / closed status display device for each floor, which displays the open / closed status of construction doors installed on each floor on a display panel inside the elevator car. [Background technology]

[0002] For safety reasons, construction elevators used at building construction sites are equipped with construction doors on each floor that separate the elevator side from the stage side. These construction doors can open due to human contact or strong winds. In such cases, it is dangerous to raise or lower the cage, so a person must close the construction door on the relevant floor.

[0003] Conventionally, if a construction door (hereinafter referred to as "floor door") on any floor was open, it was necessary to close the open floor door. However, since it was not known which floor the door was open on, someone had to visually check the open / closed status of the doors on all floors.

[0004] Patent Document 1 describes a configuration in which the open / closed state of the doors on each floor is detected and a call signal is transmitted to a control unit inside the car to automatically raise and lower the car. [Prior art documents] [Patent documents]

[0005] Patent document 1: Japanese Patent Application Laid-Open No. 9-194149 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the system described in Patent Document 1 has a problem in that it is not possible to obtain information about which floor the doors of each floor are in an open state.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to solve the above problems and to display the open / closed state of each floor door for each floor door so that people inside the car can check it. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a door open / close status display device for each floor that displays the open / close status of each floor door in a construction elevator inside the elevator car, A door open / close detection unit for each floor that detects the open / close state of each floor door provided for each floor; A transmission control unit that receives a signal from the each floor door opening / closing detection unit; A floor door open / close display unit is provided in the car and displays the open / close state of each floor door received by the transmission control unit; The door opening / closing detection unit and the transmission control unit of each floor are Consists of a pair of two cables Door open / close status on each floor is multiplexed and transmitted by connecting the doors via a transmission line. It is possible to The floor door open / close detection unit has a floor value indicating which floor the door is on, and transmits the open / closed state of each floor door to the floor door open / closed state transmission line by making the potential different between the open state and the closed state in synchronization with the floor designation signal corresponding to each floor value among a predetermined number of floor designation signals following the reset signal transmitted in time series to the floor door open / closed state transmission line. The present invention provides a door open / close status display device for each floor, characterized in that

[0009] With this configuration, the open / closed status of each floor door can be displayed so that people inside the cage can check it. Also, The open / closed state of each floor door is sent to the each floor door open / closed state transmission line by making the potential of the each floor door open / closed state different between the open and closed states in synchronization with the floor designation signal, so that the each floor door open / closed state transmission line can be constructed from a pair of cables consisting of one signal line and one ground line.

[0014] The door open / close status display device for each floor may be configured so that the door open / close status display unit for each floor can visually check the open / close status of all the doors for each floor at once.

[0015] This configuration allows people to see at a glance whether each floor door is open or closed. Effect of the Invention

[0016] The door open / closed status display device for each floor of the present invention displays the open / closed status of each floor door for each floor, allowing people inside the car to check which floor doors are open. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a diagram illustrating a door opening / closing state display device for each floor in the first embodiment of the present invention. [Diagram 2]FIG. 4 is a diagram for explaining multiplex transmission in a door open / closed state transmission line for each floor in the first embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram for explaining the display of the door open / close display unit for each floor in the first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0018] A first embodiment of the present invention will be described with reference to Figs. 1 to 3. Fig. 1 is a diagram for explaining an apparatus for displaying the open / closed state of each floor door in the first embodiment of the present invention. Fig. 2 is a diagram for explaining multiplex transmission in a transmission line for transmitting the open / closed state of each floor door in the first embodiment of the present invention. Fig. 3 is a diagram for explaining the display of the open / closed display unit for each floor door in the first embodiment of the present invention.

[0019] In the construction elevator equipped with the floor door open / closed state display device 100 in the first embodiment, a car 10 carrying people and luggage can be raised and lowered by a person in the car 10 from the first floor (or basement) to the top floor. Construction elevators are installed in buildings under construction, and the top floor becomes higher as construction progresses. For this reason, the floors at which the construction elevator stops also become higher as construction progresses. At the entrance of the construction elevator on each floor, a temporary sliding door (hereinafter also referred to as the "floor door") is installed to prevent danger. This floor door may be opened by contact with a person or by a strong wind. If it is opened, there is a danger that people or luggage may fall, so it is necessary to close the open floor door before raising or lowering the car 10.

[0020] Conventional construction elevators can detect when any of the doors on each floor are open, but they do not know which floor the doors are on. This requires a person to go up and down the stairs to each floor to check, which is tiring and time-consuming.

[0021] In the following description, a construction elevator capable of ascending and descending from the first floor to the nth floor (n is a maximum of 255) will be described. In the first embodiment, the floor door open / closed state display device 100 is provided with a floor door open / closed state detection unit 21 (21-1, 21-2, . . . 21-(n-1), 21-n) for each floor door, which detects the open state of each floor door 20 (20-1, 20-2, . . . 20-(n-1), 20-n) when the limit switch 22 (22-1, 22-2, 22-(n-1), 22-n) is closed (ON). Conversely, the limit switch 22 (22-1, 22-2, 22-(n-1), 22-n) detects the closed state when it is open (OFF). Here, each floor door opening / closing detection unit 21-1 is provided on the first floor, each floor door opening / closing detection unit 21-2 is provided on the second floor, and similarly each floor door opening / closing detection unit 21-(n-1) is provided on the (n-1) floor, and each floor door opening / closing detection unit 21-n is provided on the nth floor.

[0022] In the first embodiment, the elevator is a construction elevator capable of ascending and descending from the first floor to the nth floor (n is a maximum of 255), but this is not necessarily limited to this and can be changed as appropriate. For example, the elevator may be capable of ascending and descending from the fifth basement floor to the nth floor, or from the second floor to the nth floor, and may be capable of ascending and descending from any floor to any floor. In the first embodiment, the maximum number of floor doors that can be detected is 256.

[0023] The cage 10 is provided with a transmission control unit 11, a control unit 12, and an open / close display unit 13 for each floor door. The transmission control unit 11 is for grasping the open / close state of each floor door 20 (20-1, 20-2, . . . 20-(n-1), 20-n) detected by the floor door open / close detection unit 21 (21-1, 21-2, . . . 21-(n-1), 21-n). Specifically, the transmission control unit 11 sends a signal to the inverter 30 via a cable 24, and the inverter 30 sends a reset signal and a predetermined number (n in the first embodiment) of floor number designation signals in ascending order of 1 → 2 → . . . (n-1) → n to the floor door open / close state transmission line 23 based on the signal issued by the transmission control unit 11 (see FIG. 2). 2, "RESET" indicates a signal that triggers the subsequent transmission of a floor designation signal, "1" indicates a floor designation signal that designates the first floor, similarly, "2" indicates a floor designation signal that designates the second floor, "n-1" indicates a floor designation signal that designates the (n-1)th floor, and "n" indicates a floor designation signal that designates the nth floor. The predetermined number in the first embodiment is n.

[0024] Each floor door open / close detection unit 21 (21-1, 21-2, . . . 21-(n-1), 21-n) stores a floor number indicating which floor each floor door is installed on. Then, when a floor number designation signal corresponding to each floor number is received, the open / closed state of each floor door, indicating whether it is open or closed, is sent to each floor door open / closed state transmission line 23 and multiplexed in time series. That is, as shown in FIG. 2, if it is open (i.e., ON), the voltage is set to a negative potential, and if it is closed (i.e., OFF), the voltage is set to zero potential (0V). The negative potential in the first embodiment is -10V. Each floor door open / closed state transmission line 23 is composed of a pair of cables, a signal line and a ground line. For this reason, it can be constructed at low cost and the risk of failure such as disconnection can be reduced.

[0025] The transmission control unit 11 receives the open / closed status of each floor door based on the time-series multiplexed transmission signal sent to the floor door open / closed status transmission line 23. The received open / closed status of each floor door is transmitted to the control unit 12. The control unit 12 displays the open / closed status of each floor door on the floor door open / closed display unit 13, as shown in FIG. 3. The display on the floor door open / closed display unit 13 has a floor display 13a and an LED 13b for each floor door, which emits red light (shown in black in FIG. 3) when the door is open and green light (shown in white in FIG. 3) when the door is closed. This allows people to see the open / closed status of each floor door at a glance.

[0026] In addition, the control unit 12 can control the motor that raises and lowers the cage 10, and if it determines that the door of any floor is open while the cage 10 is rising or falling, it immediately stops the rise or fall of the cage 10 and controls it to stop at the nearest floor.

[0027] In the first embodiment, the open / close of each floor door is detected by a limit switch, but the present invention is not limited to this and can be modified as appropriate. For example, the door may be detected in a non-contact manner.

[0028] In the first embodiment, the floor door open / close display unit 13 is configured to have an LED for each floor door and to indicate the open or closed state with red or green, but this is not necessarily limited to this and can be modified as appropriate. For example, the color indicating the open or closed state may be displayed with any other color. Also, each floor door may be equipped with an LED or lamp, and the open or closed state may be indicated by lighting or not lighting. Furthermore, the floors in the open state may be displayed with numbers.

[0029] Furthermore, in the first embodiment, the open state in multiplex transmission is −10 V, but this is not necessarily limited to this and can be changed as appropriate. For example, it may be −24 V or another negative potential.

[0030] In addition, in the first embodiment, the floor designation signal is configured to be sent to each floor door open / closed status transmission line 23 in ascending order of 1 → 2 → ...(n-1) → n in time series, but this is not necessarily limited to this and can be changed as appropriate. For example, it may be sent in descending order of n → (n-1) → ... → 2 → 1. Also, the order may be set randomly instead of ascending or descending order. In any case, it is sufficient that each floor door open / closed detection unit 21 (21-1, 21-2, ... 21-(n-1), 21-n) and the transmission control unit 11 store the determined order of the floor designation signal.

[0031] Thus, in the first embodiment, a door open / close status display device for each floor that displays the open / close status of each floor door in a construction elevator inside the elevator car is provided. A floor door open / close detection unit that detects the open / close state of each floor door provided on each floor; A transmission control unit that receives a signal from the each floor door opening / closing detection unit; A floor door open / close display unit is provided in the car and displays the open / close state of each floor door received by the transmission control unit; The door open / close detection units and the transmission control unit on all floors are connected by door open / close status transmission lines on each floor, and the door open / close status display device on each floor is characterized in that it multiplexes and transmits the open / close status of each floor door, so that the open / close status of each floor door can be displayed so that people inside the car can check it. Therefore, there is no need for people to go up and down the stairs to check the open / close status of each floor door as in the past. [Industrial Applicability]

[0032] The door open / close state display device for each floor according to the present invention can be widely used in the field of construction elevators at construction sites. [Explanation of symbols]

[0033] 10: Cage 11: Transmission control section 12: Control unit 13: Door open / close indicator for each floor 13a: Floor display 13b: LED 20-1: 1st floor 20-2: 2nd floor 20-(n-1):(n-1)th floor 20-n:nth floor 21 (21-1, 21―2, 21-(n―1), 21-n): Door opening / closing detector for each floor 22(22-1, 22―2, 22-(n―1), 22-n): Limit switch 23: Door open / close status transmission line for each floor 24: Cable 100: Door open / close status display device for each floor

Claims

1. A door open / close status display device for each floor that displays the open / close status of each floor door in a construction elevator inside the car, A door open / close detection unit for each floor that detects the open / close state of each floor door provided for each floor; A transmission control unit that receives a signal from the each floor door opening / closing detection unit; A floor door open / close display unit is provided in the car and displays the open / close state of each floor door received by the transmission control unit; The floor door open / close detection units and the transmission control units of all floors are connected by floor door open / close status transmission lines consisting of two pairs of cables, and the open / close status of each floor door can be multiplexed and transmitted; Each floor door open / closed state detection unit has a floor value indicating which floor the door is on, and transmits the open / closed state of each floor door to the floor door open / closed state transmission line by making the potential different between the open state and the closed state in synchronization with a floor designation signal corresponding to each floor value out of a predetermined number of floor designation signals following a reset signal transmitted in chronological order to the floor door open / closed state transmission line.

2. The door open / closed state display device for each floor according to claim 1, characterized in that the open / closed state display unit for each floor door enables the open / closed state of all the doors for each floor to be visually confirmed all at once.

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