JP2020067190A - Storage - Google Patents

Abstract

To provide a storage capable of preventing a door opening device from being operated when a door is in an open position.SOLUTION: A storage comprises: a storage body 11 which has an opening section 14; a door 13A which can be rotated between an open position to open the opening section 14 and a close position to close the same; a door opening device 40 which rotates the door 13A in the close position in a direction toward the open position; a switch 49 which activates the door opening device 40; a detection object section 61 which is installed on a front panel 30 covering the door opening device 40 from a front side; a sensor 60 which is installed on the door 13A; and a control section 70. When the door 13A is in the open position, the sensor 60 and the detection object section 61 are positioned to keep a predetermined distance or more therebetween. When the distance between the sensor 60 and the detection object section 61 is equal to or larger than the predetermined distance, the control section 70 does not activate the door opening device 40 even with the switch 49 turned on.SELECTED DRAWING: Figure 12

Description

  The present invention relates to storage.

  Conventionally, a storage provided with a door opening device (door opening unit) has been disclosed as a storage (Patent Document 1 below). Patent Document 1 describes a configuration in which the door opening device operates when the switch means is turned on, and the push rod included in the door opening device pushes the door open.

JP 2001-056176 A

  In the above configuration, when the door opening device operates when the door is in the open position, the user hears the operation sound of the door opening device even though the door opening device does not need to operate, which causes discomfort. I am worried about the situation.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a storage cabinet capable of suppressing a situation in which the door opening device operates with the door in the open position. .

  In order to solve the above-mentioned problems, a storage of the present invention is a box-shaped storage main body having an opening opening forward, and an opening that is rotatably attached to the storage main body and opens the opening. A door that is rotatable between a position and a closed position that closes the opening, a door opening device that rotates the door in the closed position to the open position side, and a switch that operates the door opening device. A cover member that is adjacent to the storage main body and covers the door opening device from the front, a detection target portion provided on one of the cover member and the door, and the cover member and the door, A sensor that is provided on the other side and that determines whether or not the distance to the detection target unit is within a predetermined distance, and a control unit, and the sensor and the detection target unit are the closed position of the door. And if the sensor and the detection There is a positional relationship in which the distance to the elephant portion is within the predetermined distance, and further, the sensor and the detection target portion, when the door is in the open position, between the sensor and the detection target portion. When the distance is greater than the predetermined distance, and the distance between the sensor and the detection target portion is greater than the predetermined distance, the control unit is a case where the switch is turned on. Is also characterized in that the door opening device is not operated.

  When the door is in the open position, the door opening device does not operate because the distance between the sensor and the detection target portion is larger than the predetermined distance. This can suppress the situation where the door opening device operates when the door is in the open position. Also, if the cover member is removed during maintenance of the door opening device, etc., the removed cover member will be placed at a position sufficiently far from the door, so the distance between the sensor and the detection target part It becomes large and the door opener does not work. Therefore, it is possible to suppress the situation where the door opening device operates during maintenance of the door opening device. According to the above configuration, by providing one sensor and one detection target portion, it is possible to respectively detect that the door is in the open position and that the cover member is removed. Therefore, the number of detection target parts to be installed can be reduced as compared with a configuration in which a sensor is provided on the storage main body and detection target parts are provided on the door and the cover member, respectively.

  Further, the control unit is in a state in which a distance between the sensor and the detection target unit is larger than the predetermined distance after the switch is turned on, and thereafter, a distance between the sensor and the detection target unit is the predetermined distance. The function of the switch may be disabled until the distance is within the distance. When the switch is operated while the door is not in the closed position and the distance between the sensor and the detection target portion is within the predetermined distance, it is possible to suppress the situation in which the door opening device operates.

  ADVANTAGE OF THE INVENTION According to this invention, the storage which can suppress the situation which a door opening apparatus operates in the state which a door is in an open position can be provided.

The front view which shows the cooling storehouse which concerns on one Embodiment of this invention. Perspective view showing a cooling storage Schematic diagram showing the opening and closing operation of the door Perspective view showing the door opening device The top view which shows a lever member and a door extrusion part Plan view showing the door opening device The top view which shows the state which the door opening device operated. Sectional view showing the front panel near the closed position Sectional view showing the front panel area (door open) Sectional view showing the front panel near the open position Block diagram showing the electrical configuration of the cooling storage Flowchart showing the operation of the control unit for opening and closing the door Flowchart showing the operation of the control unit related to the switch

  An embodiment of the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG. 1, a 4-door type cold storage 10 is illustrated as a storage. As shown in FIGS. 1 and 2, the cooling storage 10 has a box-shaped storage main body 11, a machine room 12 arranged above the storage main body 11, and is rotatably attached to the storage main body 11. And a door 13. The storage main body 11 is a heat-insulating box having an opening 14 (see FIG. 3) opened forward, and has a storage chamber 15 (see FIG. 3) in which stored items are arranged. A pair of left and right doors 13, 13 arranged in the vertical direction are attached to the storage body 11.

  As shown in FIG. 1, the door 13 is rotatably attached to the storage main body 11 via a hinge member 17 having a hinge pin 16. As a result, the door 13 is rotatable between a closed position that closes the opening 14 and an open position that opens the opening 14, as shown in FIG. That is, the storage chamber 15 is configured to be opened and closed by the door 13. In addition, in FIG. 3, the door 13 in the open position is indicated by a chain double-dashed line and is denoted by reference numeral 13B. As shown in FIG. 1, the opening 14 is divided into four by a partition member 18 (center pillar) extending in the vertical direction and a partition member 19 extending in the horizontal direction, and each of the openings is divided into four. Each door 13 is arranged so as to cover the part. In the following description, the door 13 side is the front side, the side opposite to the door 13 is the rear side, and the front-back direction is the Y-axis direction. Further, the left-right direction in the front view (a state in which the cooling storage 10 is viewed from the front side) shown in FIG. 1 is defined as the left-right direction (X-axis direction) of the cooling storage 10.

  As shown in FIG. 2, the machine room 12 accommodates a cooling device 20, an electrical equipment box 21, and a door opening device 40 (details will be described later). The cooling device 20 (refrigeration unit) includes a condenser 22, a condenser fan 23, and a compressor 24. The condenser 22 is covered with an air filter 25 from the front. The cooling device 20 includes a cooler (not shown) and a refrigerant pipe (not shown) arranged in a cooler chamber (not shown) provided above the storage chamber 15 in the storage body 11. Circular connection. Thus, the cooling device 20 is driven to cause the cooler to generate cool air. The cool air generated by the cooler is sent to the storage chamber 15 by the cooling fan 28 (see FIG. 11) arranged in the cooler chamber.

  As shown in FIG. 2, the machine room 12 is opened upward and backward, and is constituted by a front panel 30 and left and right side panels 26, 26. The upper surface of the storage body 11 has a rectangular shape, and columns 27 are provided at the four corners. The side panels 26, 26 are fixed to a pair of columns 27, 27 arranged in the front-rear direction. The pair of support columns 27, 27 arranged in the left-right direction on the rear side are connected by a reinforcing member 29 having a long shape.

  The door opening device 40 is a device for opening the door 13. In the present embodiment, a door opening device 40 for opening the door 13 located on the upper right side in a front view among the four doors 13 is illustrated. In the following description, the door 13 on the upper right side that is opened by the door opening device 40 is denoted by reference numeral 13A to distinguish it from other doors 13. The door opening device 40 is arranged at a position above the door 13A at the front end of the machine room 12.

  As shown in FIG. 4, the door opening device 40 includes a solenoid 41, a plunger 42 (movable iron core), a lever member 43, a rotating shaft 44, and a door pushing portion 45. A hinge pin 46 is attached to the tip of the plunger 42. The hinge pin 46 is fixed by a fixing member 50 so as to be displaceable in the front-rear direction. Specifically, the hinge pin 46 is inserted into the through hole 50A of the fixing member 50. The through hole 50A has a long shape that is long in the front-rear direction, and the hinge pin 46 can be displaced in the front-rear direction inside the through hole 50A.

  The lever member 43 is composed of a pair of plate members that are vertically opposed to each other with a space therebetween, and has a long shape that is long in the left-right direction as a whole. The lever member 43 is rotatable about a rotation shaft 44 extending in the vertical direction. As shown in FIG. 5, one end of the lever member 43 is a connecting portion 43A that is connected to the plunger 42 via a hinge pin 46. A through hole 43B into which the hinge pin 46 is inserted is formed in the connecting portion 43A. The through hole 43B has a long shape that is long in the left-right direction. A door pushing portion 45 is provided at the other end of the lever member 43. The door push-out portion 45 is configured to contact the rear surface of the door 13A as shown in FIG. Then, in the longitudinal direction of the lever member 43, the distance between the connecting portion 43A and the rotating shaft 44 is set to a value larger than the distance between the contact 45A of the door pushing-out portion 45 with respect to the door 13A and the rotating shaft 44. .

  As shown in FIGS. 6 and 7, when the plunger 41 (and the hinge pin 46) is displaced rearward by driving the solenoid 41, the lever member 43 rotates about the rotation shaft 44, and the door pushing portion 45. Is displaced forward. As a result, the door pushing section 45 pushes the door 13A forward, and the door 13A rotates from the closed position to the open position. That is, the connecting portion 43A of the lever member 43 is the force point, the rotating shaft 44 is the fulcrum, and the door pushing portion 45 (more specifically, the contact point 45A) is the action point. Further, as shown in FIG. 4, a spiral spring 51 is attached to the rotary shaft 44. One end of the spiral spring 51 is locked to the fixed member 50, and the other end is locked to the lever member 43. The spiral spring 51 has a function of returning the lever member 43 rotated by the displacement of the plunger 42 rearward to the initial position (see FIG. 5).

  The door 13 is attracted to the storage body 11 by a magnet gasket 47 (see FIG. 5). For this reason, in order to open the door 13, it is necessary to push the door 13 forward with a force larger than the attraction force of the magnet gasket 47 and peel the magnet gasket 47 from the storage body 11. By providing the lever member 43, the driving force of the plunger 42 can be amplified and transmitted to the door 13A. Therefore, the solenoid 41 having a lower suction force can be used as compared with the configuration in which the plunger that is displaced forward presses the door 13 directly, and the solenoid 41 can be downsized.

  Further, as shown in FIG. 1, the handle 48 of the door 13A is provided with a switch 49 for operating the door opening device 40. The switch 49 is, for example, an electrostatic sensor, and when the user touches the handle 48 to turn on the switch 49, the solenoid 41 is driven to open the door 13A. The switch 49 is not limited to the electrostatic sensor, and a push button type switch or the like may be used, for example.

  Moreover, in this embodiment, as shown in FIG. 1, the sensor 60 and the detection target part 61 for detecting opening / closing of the door 13A are provided. The sensor 60 can determine whether or not the distance L2 to the detection target portion 61 is within the predetermined distance L1. The sensor 60 is attached to an end of the upper surface of the door 13A on the side far from the hinge member 17. On the other hand, the detection target portion 61 is attached to the front surface of the front panel 30. The sensor 60 may be a proximity sensor, and the detection target unit may be any object that can be detected by the proximity sensor. For example, when a magnetic proximity sensor is used as the sensor 60, a magnet can be used as the detection target portion 61, and when an inductive proximity sensor is used as the sensor 60, a conductor such as metal is used. be able to. Further, the sensor 60 may be provided on the front panel 30 and the detection target portion 61 may be provided on the door 13A.

  As shown in FIG. 3, the distance L2 between the sensor 60 and the detection target portion 61 changes depending on the degree of opening of the door 13A. In the process in which the door 13A approaches the open position from the closed position, the sensor 60 rotates forward together with the door 13A, and after the sensor 60 is arranged in front of the detection target portion 61, as the sensor 60 and the detection target move closer to the open position. The distance L2 from the portion 61 gradually increases (see also FIG. 9). The predetermined distance L1 is a distance L2 between the sensor 60 and the detection target portion 61 when the door 13A is slightly opened (an intermediate position between the closed position and the open position). In other words, the sensor 60 and the detection target portion 61 have a positional relationship in which the distance L2 between the sensor 60 and the detection target portion 61 is within the predetermined distance L1 when the door 13A is in the closed position. Further, the sensor 60 and the detection target portion 61 have a positional relationship in which the distance L2 between the sensor 60 and the detection target portion 61 is larger than the predetermined distance L1 when the door 13A is in the open position. The area A1 shown in FIG. 3 is a rotation range of the door 13A in which the distance L2 is within the predetermined distance L1, and the area A2 shown in FIG. 3 is the rotation range of the door 13A in which the distance L2 is larger than the predetermined distance L1. It is a dynamic range.

  As shown in FIG. 8, the front panel 30 (cover member) is adjacent to the storage body 11 and the door 13A, and is configured to cover the door opening device 40 from the front (right side in FIG. 8). The front panel 30 is attached to a pair of columns 27, 27 (see FIG. 2) arranged in the left-right direction on the front side. The front panel 30 includes hooks 31 and elastic locking portions 32 that are locked to the columns 27, and is rotatably attached with the locking portion of the hooks 31 as a rotation center. For this reason, the front panel 30 has a closed position (front panel closed position, see FIG. 8) that covers the machine chamber 12 from the front and an open position (opens the front of the machine chamber 12) with the upper end of the front panel 30 as the center of rotation. It can be rotated between the closed position of the front panel and the position shown in FIG. Further, by releasing the hook 31 and the elastic locking portion 32 from the support 27, the front panel 30 can be removed from the support 27.

  Next, the electrical configuration of the cooling storage 10 will be described. As shown in FIG. 11, the cooling storage 10 includes a control unit 70. A display unit 71, an operation unit 72, a storage unit 73, a compressor 24, a condenser fan 23, a cooling fan 28, a switch 49, a solenoid 41, and a sensor 60 are electrically connected to the control unit 70.

  The control unit 70 is mainly composed of, for example, a CPU, and the storage unit 73 is composed of, for example, a ROM or a RAM. The control unit 70 can control the operation of each device (the compressor 24, the cooling fan 28, the solenoid 41, etc.) connected to the control unit 70 by executing the computer program stored in the storage unit 73. Has become. The control unit 70 is housed inside the electrical equipment box 21 (see FIG. 2) arranged in the machine room 12, for example, but is not limited to this.

  The display unit 71 and the operation unit 72 are provided, for example, in an operation box 74 arranged at the right end of the front end of the machine room 12. The display unit 71 is composed of a liquid crystal panel, and the operation unit 72 is composed of buttons that can be pressed. The display unit 71 and the operation unit 72 are arranged on the back side of the front panel 30. The user can visually recognize the display unit 71 from the front through a transparent member (such as glass) provided on the front panel 30. Further, the user can operate the operation unit 72 by opening the front panel 30. By operating the operation unit 72, the worker can operate the cooling storage 10 and perform various settings (such as changing the set temperature in the storage).

  Next, the operation of the control unit 70 for opening and closing the door 13A will be described. FIG. 12 is a flowchart showing the operation of the control unit 70 regarding opening / closing of the door 13A. As shown in FIG. 12, when the operator touches the handle 48 to operate the switch 49 and the switch 49 is turned on (“YES” in step S <b> 1), the control unit 70 causes the sensor 60 and the detection target unit 61. If the distance L2 between the and is within the predetermined distance L1 (“YES” in step S2), it is determined that the door 13A is closed (door closed state), and the solenoid 41 is operated (step S3). As a result, the door opening device 40 operates to rotate the door 13A toward the open position. That is, the control unit 70 determines that the door 13A is open (door open state) when the distance L2 between the sensor 60 and the detection target unit 61 is larger than the predetermined distance L1 (“NO” in step S2). However, even if the switch 49 is turned on, the door opening device 40 is not operated.

  FIG. 13 is a flowchart showing the operation of the control unit 70 related to the switch 49. As shown in FIG. 13, when the switch 49 is turned on (“YES” in step S11) and the distance L2 is within the predetermined distance L1 (“YES” in step S12), the control unit 70 switches the switch 49. The function of is invalidated (step S13). While the function of the switch 49 is disabled, the door opening device 40 does not operate even if the switch 49 is operated. As used herein, "to disable the function of the switch 49" means, for example, cutting off the power supply to the switch 49 to stop the output signal from the switch 49, or controlling even when the switch 49 is turned on. It means that the unit 70 does not operate the door opening device 40.

  Then, the control unit 70 disables the function of the switch 49, and after the distance L2 becomes larger than the predetermined distance L1 and then falls within the predetermined distance L1 (“YES” in step S14), the function of the switch 49. Is enabled (step S15). That is, the control unit 70 is in a state in which the distance L2 between the sensor 60 and the detection target unit 61 is greater than the predetermined distance L1 after the switch 49 is turned on (the state in which the door 13A is in the area A2 in FIG. 3), and thereafter. The function of the switch 49 is disabled until the distance L2 between the sensor 60 and the detection target portion 61 is within the predetermined distance L1 (the state in which the door 13A is in the area A1 in FIG. 3). Therefore, in the present embodiment, for example, the function of the switch 49 is disabled from when the door 13A in the closed position is opened by the door opening device 40 until the door 13A is placed in the closed position again.

  Next, the effect of this embodiment will be described. In the present embodiment, when the door 13A is in the open position, the distance L2 between the sensor 60 and the detection target portion 61 is such that the distance L2 is larger than the predetermined distance L1, so that the door opening device 40 does not operate. Has become. This can prevent the door opening device 40 from operating when the door 13A is in the open position. That is, when the switch 49 is operated while the door 13A is in the area A2 in FIG. 3, it is possible to suppress the situation where the door opening device 40 operates.

  Further, when the front panel 30 is removed when performing maintenance or the like of the door opening device 40, the removed front panel 30 is placed at a position sufficiently far from the door 13A. The distance L2 to the portion 61 becomes larger than the predetermined distance L1, and the door opening device 40 does not operate. Therefore, it is possible to suppress the situation where the door opening device 40 operates during the maintenance of the door opening device 40. Further, in the present embodiment, the distance L2 between the sensor 60 and the detection target portion 61 is larger than the predetermined distance L1 even when the front panel 30 is in the open position (see FIG. 10) that opens the front of the machine room 12. It has a positional relationship. Therefore, even when the switch 49 is turned on when the front panel 30 is in the open position, the door opening device 40 does not operate.

  Further, according to the above configuration, by providing the sensor 60 and the detection target portion 61 one by one, it is possible to respectively detect that the door 13A is in the open position and that the front panel 30 is removed. Therefore, the number of detection target parts 61 to be installed can be reduced as compared with the configuration in which the sensor 60 is provided in the storage main body 11 and the detection target parts 61 are provided in the door 13A and the front panel 30, respectively.

  Further, in the present embodiment, the control unit 70 makes the distance L2 between the sensor 60 and the detection target unit 61 larger than the predetermined distance L1 after the switch 49 is turned on, and thereafter, the sensor 60 and the detection target unit 61. The function of the switch 49 is disabled until the distance L2 between and is within the predetermined distance L1. When the switch 49 is operated in the state where the door 13A is not in the closed position and the distance L2 between the sensor 60 and the detection target portion 61 is within the predetermined distance L1, it is possible to suppress the situation where the door opening device 40 operates. That is, when the switch 49 is operated in a state where the door 13A that rotates from the closed position to the open position is in the area A1 in FIG. 3, it is possible to prevent the door opening device 40 from operating.

<Other Embodiments>
The present invention is not limited to the embodiments described above with reference to the drawings, and the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the cooling storage is illustrated as the storage, but the storage is not limited to this. As the storage, a showcase or the like can be exemplified.
(2) In the above embodiment, the configuration in which the door opening device 40 is arranged in the machine room 12 is illustrated, but the invention is not limited to this. The location of the door opening device 40 can be appropriately changed according to the door 13 to be rotated.
(3) In the above embodiment, the door opening device 40 including the lever member 43 is illustrated, but the present invention is not limited to this. For example, a door opening device configured to directly push the door by a plunger may be provided.

10 ... Cooling storage (storage), 11 ... Storage main body, 13A ... Door, 14 ... Opening part, 30 ... Front panel (cover member), 40 ... Door opening device, 49 ... Switch, 60 ... Sensor, 61 ... Detection target part , 70 ... Control unit, L1 ... Predetermined distance, L2 ... Distance between sensor and detection target unit

Claims (2)

A box-shaped storage main body having an opening opened forward,
A door that is rotatably attached to the storage body and is rotatable between an open position that opens the opening and a closed position that closes the opening;
A door opening device for rotating the door in the closed position to the open position side;
A switch for operating the door opening device,
A cover member that is adjacent to the storage body and covers the door opening device from the front,
Of the cover member and the door, the detection target portion provided on one of the,
A sensor provided on the other of the cover member and the door, for determining whether or not the distance to the detection target portion is within a predetermined distance,
And a control unit,
The sensor and the detection target portion, when the door is in the closed position, a positional relationship in which the distance between the sensor and the detection target portion is within the predetermined distance,
Furthermore, the sensor and the detection target portion is a positional relationship in which the distance between the sensor and the detection target portion is larger than the predetermined distance when the door is in the open position,
When the distance between the sensor and the detection target unit is larger than the predetermined distance, the control unit does not operate the door opening device even when the switch is turned on.   The control unit is in a state in which the distance between the sensor and the detection target unit is larger than the predetermined distance after the switch is turned on, and then the distance between the sensor and the detection target unit is within the predetermined distance. The storage according to claim 1, wherein the function of the switch is disabled until it becomes.

Images