JP3620374B2 - Chariot - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric or electric assist type allocation vehicle used in hospitals, other hotels, schools, and the like.
[0002]
[Prior art]
In facilities such as hospitals, a distribution car equipped with a storage box with shelves to store a large number of food sets is used for distribution of meals to patients in each hospital room, and can be efficiently distributed to a large number of patients. ing. In recent years, a storage car has been provided with a heat retaining function and a cold retaining function so that a hot meal can be served without being cooled, or a cold food can be served as it is. Moreover, in order to reduce the burden on the person in charge, the above-mentioned layout vehicle is equipped with a handle for controlling traveling, and the handle can be moved with a small operating force by using this handle. A car has been proposed. (For example, JP-A-11-127975)
[0003]
[Problems to be solved by the invention]
By the way, the person in charge of the above-mentioned arrangement car frequently opens and closes the door of the hangar in order to put in and out the tray in which food is set in the hangar, but runs the laying car in a state where the person in charge has forgotten to close the door. There is a trouble that will. In hospitals and the like, since a person other than the person in charge can easily touch the parked car that is stopped, a person other than the person in charge may open and close the door. If you run the trolley with the door open, it will not only damage the door, but may also injure people.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a safety car with higher safety by preventing troubles when the door is opened. .
[0005]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an electric or electric assist type electric vehicle equipped with a door that can be opened and closed in order to put a tray in and out of a storage room having a heat insulating / cooling function. A lock mechanism for stopping the device, and a detector for detecting the open / closed state of the door , the detector having means for releasing the lock mechanism based on a result of detecting that the door is closed ; And a control unit for recording the opening and closing time of the door detected by the container and the temperature of the storage . As described above, since the lock mechanism of the driving device is released based on the detection signal from the detector provided in the door, the arrangement vehicle does not travel with the door opened, so the vehicle travels with the door opened. It is possible to prevent running troubles. In addition, by providing a control unit that records the opening / closing time of the door detected by the detector and the temperature of the storage, the time during which the storage room or cold storage room of the storage was opened can be investigated later. It can be done.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an example of an embodiment corresponding to the invention according to claim 1 , FIG. 1 is a side view of a layout car, FIG. 2 is a perspective view of the layout car, and FIG. 3 is a layout car. FIG. 4 is a flowchart of a process for releasing the lock mechanism of the trolley car.
[0010]
As shown in FIGS. 1 and 2, the arrangement vehicle 1 is an electric assist type arrangement vehicle with a built-in drive device 12 and is used in a hospital or the like. The distribution vehicle 1 includes a carriage 11 and a storage 4 for storing foods fixed thereon. The carriage 11 is provided with wheels 10 on the lower surface thereof, and the wheels 10 travel by driving a motor which is a driving device 12.
[0011]
The storage 4 is provided with four chambers 4a and 4b alternately, and the chamber 4a and the chamber 4b can be opened and closed in order to allow foods placed on the tray 3 to be taken in and out. The door 2 is provided on the side surfaces of the both sides of the distribution vehicle 1. The door 2 is formed of a transparent plate so that the state in the storage 4 can be confirmed without opening the door 2. The storage room 4a and the cold room 4b of the storage 4 are provided with a temperature sensor, and the temperature data of the temperature room 4a and the cold room 4b measured by the temperature sensor is a temperature indicator 9 provided above the door 2. Are displayed respectively.
[0012]
Further, the layout vehicle 1 includes a handle 6 for controlling traveling on the front surface thereof, and an electric assist function so that the handle 6 can be moved with a small operating force. The arrangement vehicle 1 includes an operation panel 7 provided with various switches and a monitor 8 for displaying various information above the handle 6. On the monitor 8, information such as an image obtained by photographing a rear blind spot area with a camera and temperature transition data of the thermal insulation room 4 a and the cold room 4 b is displayed by switching the images.
[0013]
The operation panel 7 can operate various switches such as a travel / stop changeover switch 13 for operating the driving device 12 for driving the wheels 10 and a switch 14 for setting the temperature of the warm room 4a and the cold room 4b. .
[0014]
In the arrangement vehicle 1, as shown in FIG. 3, a proximity switch 22 is provided as a detector 5 that detects the open / closed state of the door 2 at the entrance of each storage 4. The proximity switch 22 is provided at the upper end of the entrance of the storage 4 and detects the detection piece 21 fixed to the upper end of each door 2. When the door 2 is closed, the detection piece 21 is formed so as to be positioned directly below the proximity switch 22, and the proximity switch 22 detects that the door 2 is in a closed state. The detection piece 21 can be made of metal, magnetic material, or the like.
[0015]
The distribution vehicle 1 includes a lock mechanism 15 that stops the driving device 12. The lock mechanism 15 is released by switching a travel / stop changeover switch 13 to travel, along with the operation of the handle 6, and the detector. 5 is performed based on the result of detecting the door 2 in the closed state. FIG. 4 is a flowchart for performing the releasing process of the lock mechanism 15 of the drive device 12. In order to travel the arrangement vehicle 1, it is detected in step # 101 that the detector 5 is in the closed state of the door, and when the changeover switch 13 is turned on in step # 102, that is, from the stop. When the switch is switched to traveling, the steering wheel operation in step # 103 can be performed. When the handle 6 is operated, the lock is released in step # 104 and the drive device is started. In the figure, the order of step # 101 and step # 102 may be reversed.
[0016]
FIG. 5 is a block diagram showing the relationship between each device of the arrangement vehicle. When the door 2 is in a closed state, a signal for releasing the lock mechanism 15 based on a detection signal from the detector 5 is transmitted to the control unit 16 including a CPU or the like. The drive device 12 is moved by a signal from the control unit 16 so that the distribution vehicle 1 can travel.
[0017]
Since the arrangement vehicle 1 releases the lock mechanism 15 of the drive device 12 based on the detection signal from the detector 5 provided in the door 2, it is possible to prevent troubles that occur when the door is opened. Therefore, the arrangement vehicle 1 has higher safety.
[0018]
The detector 5 provided in the door 2 is not limited to the one using the proximity switch, and various detection devices such as a photoelectric sensor and a limit switch can be used. Is preferred.
[0019]
Next, an embodiment corresponding to the invention according to claim 1 will be described with reference to the block diagram of FIG.
[0020]
The control unit 16 of the arrangement vehicle has a clock function, and is configured to record the opening / closing time of the door 2 in the recording device 17 based on the detection signal from the detector 5 provided in the door 2. It is preferable. By recording the opening / closing time of the door 2, the time during which the storage room 4 a and the cold room 4 b of the storage 4 are opened can be investigated later. In addition, when the data measured by the temperature sensors 18 of the warm room 4a and the cold room 4b are also recorded in the recording device 17 together with the time, and this temperature transition data is displayed on the display device 19, the opening / closing time of the door 2 and It is preferable to display in conjunction. When the door opening / closing time and the temperature transition data are linked, for example, the relationship between the temperature transition of the thermal storage room 4a or the cold room 4b and the open / closed state of the door 2 can be investigated over time. When an abnormality or the like occurs in the temperature transition, it can be easily investigated.
[0021]
【The invention's effect】
Since the layout vehicle according to claim 1 releases the lock mechanism of the drive device based on the detection signal from the detector provided in the door, the layout vehicle does not travel with the door open. It is possible to prevent a traveling trouble that travels in an open state. Therefore, the arrangement vehicle has higher safety.
Furthermore, it is possible to investigate later the time during which the storage room or cold storage room of the storage is open. In particular, in conjunction with the time of temperature transition data of the greenhouse or cold room, it is possible to easily investigate when an abnormality or the like occurs in the temperature transition of the storage.
[Brief description of the drawings]
FIG. 1 is a side view of a distribution vehicle showing an example of an embodiment of the present invention.
FIG. 2 is a perspective view of a distribution vehicle showing an example of an embodiment of the present invention.
FIG. 3 is a schematic view of a main part of a trolley car showing an example of an embodiment of the present invention.
FIG. 4 is a flowchart of processing for releasing a lock mechanism of a trolley car according to an example of an embodiment of the present invention.
FIG. 5 is a block diagram showing the relationship between each device of the trolley car showing an example of an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wheel arrangement 2 Door 3 Tray 4 Container 4a Cold storage 4b Cold storage room 5 Detector 6 Handle 7 Operation panel 8 Monitor 12 Driving device 13 Changeover switch 15 Locking mechanism 21 Detection piece 22 Proximity switch

Claims (1)

In an electric or electric assist type trolley equipped with a door that can be opened and closed in order to put a tray in and out of a storage room with a heat insulation and cold insulation function, and that has a built-in drive device, a lock mechanism for stopping the drive device, and A detector for detecting an open / closed state of the door, and having a means for releasing the lock mechanism based on a result of the detector detecting the door being closed, and an opening / closing time of the door detected by the detector; A trolley equipped with a controller for recording the temperature of the storage .

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