JP2006329555A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator ensuring safety with little malfunction while attaining satisfactory door opening operation. <P>SOLUTION: The refrigerator comprises an operation detecting means 26, a door opening means 28 for putting a door in opening operation, and a door opening/closing detecting means 31 for detecting the open/closed state of another door different from the above door. The operation of the door opening means 28 is controlled based on another door opening/closing information which is input information from the door opening/closing detecting means 31 in addition to a signal from the operation detecting means 26 to attain the prevention of a malfunction by a user and the safety protection of the user in actual use. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator that includes means for detecting an external force in a door opening operation and opens the door when the external force is detected.

  In recent years, with the aging of society, increasing the usability of devices used in the home has been regarded as important. In particular, in refrigerators, with the recent trend toward large-scale and large-capacity, the doors are also relatively large, and the physical burden for opening and closing tends to increase. For this reason, the refrigerator which aimed at assisting opening and closing of the door in a refrigerator and reducing especially the load at the time of door opening is proposed.

  Conventionally, as this type of refrigerator, there is a refrigerator that drives a door opening device to push out a door when the door opening switch is pressed (for example, see Patent Document 1).

  FIG. 9 is a perspective view showing a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 9, the refrigerator 1 includes a refrigerator body 2 having a plurality of storage rooms, and doors 3, 4, 5, 6 that close the front surface of the refrigerator body 2.

  The door 3 is a rotary door pivotally supported at one end, and is provided with a handle 7. The doors 4, 5, and 6 are drawer-type doors, and are provided with a handle 8, and can be pulled out to the front in a straight line.

  Further, a door opening device 9 is provided on the top surface of the refrigerator main body 2 and is arranged behind the door 3.

  As an operation switch of the door opening device 9, a photo sensor switch 10 is provided on the side surface of the door 3, the handle 7, and the handle 8. Further, a push switch 11 is provided at a substantially lower center portion of the door 3. Furthermore, a foot switch 12 is connected to the refrigerator body 2 for remote operation.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

  First, when the door 3 is to be opened, when the handle 7 is grasped, the photo sensor switch 10 detects the approach of the hand, and a door opening signal is sent to the door opening device 9. Next, the door opening device 9 that has received the door opening signal starts an operation of pushing out the door 3 from the back surface, and opens the door 3.

  The photo sensor switch 10 or the push switch 11 provided on the side surface of the door 3 has the same action, and detects the operation when the hand is applied to the side surface of the door or when the switch is intentionally pressed to open the door. A signal is generated.

  In addition, when the photo sensor switch 10 provided on the handle 8 detects the approach of the hand, a door opening signal is similarly generated, and each door opening device (not shown) provided inside the refrigerator body 2 is driven. The door 4, the door 5 or the door 6 is opened.

Furthermore, when the foot switch 12 is stepped on with a foot, a predetermined door can be opened while being away from the refrigerator.
JP 2002-295967 A

  However, in the above conventional configuration, the switch reacts very easily, so the door may open unintentionally, and in the case of a refrigerator having a plurality of doors, there is a certain door. When opening and closing the storage, there was a risk that another door could be opened unintentionally and hit the user, or the fingers and hands could be caught. There was a problem that safety could not be secured.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a refrigerator that can realize a satisfactory door opening operation and can ensure safety with few malfunctions.

  In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a refrigerator main body including a plurality of storage rooms, a plurality of doors provided to be openable and closable at the openings of the storage rooms, an operation detection unit, In a refrigerator comprising door opening means for opening the door and door opening / closing detection means for detecting the open / closed state of the door, at least other than the storage room in which the door opening means for opening the door is installed. Door opening / closing detection means for detecting the opening / closing state of the door is installed in the storage room.

  This prevents a door from being opened unintentionally and hitting a user or holding a finger or hand when a door is opened and a storage item is put in and out. it can.

  The refrigerator according to the present invention includes a refrigerator main body having a plurality of storage chambers, a plurality of doors that are openable and closable at openings of the storage chambers, an operation detection unit, and a door opening that opens the doors. And a door opening / closing detecting means for detecting an open / closed state of the door, wherein the door is opened / closed in a storage chamber adjacent to the storage chamber in which door opening means for opening the door is installed. Door opening / closing detection means for detecting a state is installed, and when the door opening means is operated, the door opening means is controlled based on a signal from the door opening / closing detection means.

  As a result, when opening the door and taking in and out the stored items, there is a possibility that fingers or hands may be caught in the door unintentionally. Can prevent people from being injured.

  When the refrigerator of the present invention opens a door and puts in / out storage, another door opens unintentionally and hits the user or pinches fingers or hands. It is possible to provide a refrigerator that can be prevented, has few malfunctions, and has a good door opening operation that can ensure safety.

  The invention according to claim 1 is a refrigerator main body provided with a plurality of storage rooms, a plurality of doors provided to be openable and closable at openings of the storage rooms, operation detection means, and a door that opens the doors. In a refrigerator provided with an opening means and a door opening / closing detection means for detecting an opening / closing state of the door, at least an opening / closing state of the door in a storage room other than the storage room provided with a door opening means for opening the door Door opening / closing detection means is installed, and when the door opening means is operated, the door opening means is controlled based on a signal from the door opening / closing detection means. When you put in and out the stored items, you can prevent another door from opening unintentionally and hitting the user or pinching your fingers or hands. Good opening operation that can secure Refrigerator it is possible to provide a was.

  According to a second aspect of the present invention, there is provided a refrigerator main body having a plurality of storage rooms, a plurality of doors provided at the opening of the storage room so as to be openable and closable, operation detection means, and a door for opening the doors. In a refrigerator comprising an opening means and a door opening / closing detection means for detecting an open / closed state of the door, at least opening / closing of the door in the storage room adjacent to the storage room in which the door opening means for opening the door is installed. Door opening / closing detection means for detecting a state is installed, and when the door opening means is operated, the door opening means is controlled based on a signal from the door opening / closing detection means, thereby opening the door. When putting in / out things, there is a possibility that fingers and hands may be caught in the door unintentionally, so that the most dangerous adjacent door opens and the user is injured. Can be prevented.

  According to a third aspect of the present invention, when any one of the plurality of doors provided in the opening of the storage room provided in the refrigerator main body is freely opened and closed, the door is opened by the control means. By stopping the opening operation of the means, control is performed so as not to output a signal to the door opening means, so that when any one of the doors is open, the door opening means does not operate, and the own door when closed It is possible to eliminate an unsafe door operation due to a collision between the door opening means and a false detection due to vibrations of other doors. Further, it is possible to reliably eliminate contact with the door, finger stuffing, etc. due to inadvertent opening operation, thereby ensuring the safety of the user.

  The invention according to claim 4 is the refrigerator according to claim 1 or 2, wherein any one of the plurality of doors provided at the opening of the storage chamber provided in the refrigerator main body is freely opened and closed. When the door is open, the control means lowers the opening speed of the door opening means from the normal door opening speed, thereby reducing the impact between the door and the door opening means when the door is closed. Further, even if an inadvertent opening operation is performed, the door opening operation can be visually confirmed, so that the user can predict contact with the door, finger-filling, etc., and the safety of the user can be ensured.

  The invention according to claim 5 is the refrigerator of the invention according to claim 1 or 2, wherein any one of the plurality of doors provided to be openable and closable at the opening of the storage chamber provided in the refrigerator main body. When the door is in an open state, a warning is given by voice and then the door opening means is opened. Before the inadvertent opening action is performed, a warning is given by voice and contact with the door or finger The user can predict the filling and the like, and the safety of the user can be ensured.

  The invention according to claim 6 is the refrigerator of the invention according to any one of claims 3 to 5, among the plurality of doors provided to be openable and closable at the opening of the storage chamber provided in the main body. Since the door in the open state is a door adjacent to the door provided with the door opening means, especially in the opening operation of the adjacent door, the contact with the opened door, finger jamming, etc. are prevented. It is possible to secure further safety.

  The invention according to claim 7 is the refrigerator of the invention according to any one of claims 1 to 6, wherein the operation detecting means uses a piezoelectric sensor, detects weak vibration during operation, Even when using a piezoelectric sensor that operates only by lightly touching to generate an operation signal, contact with the door or finger jamming due to inadvertent opening operations can be reliably eliminated, ensuring user safety. it can.

  The invention according to claim 8 is the refrigerator according to any one of claims 1 to 6, wherein an electrostatic sensor is used as the operation detecting means, and an operation signal can be generated by touching the refrigerator. Therefore, even when an electrostatic sensor that operates only by lightly touching is used, it is possible to reliably eliminate contact with the door and finger jamming due to inadvertent opening operation, thereby ensuring the safety of the user.

  The invention according to claim 9 is the refrigerator according to any one of claims 1 to 6, wherein an optical sensor is used as the operation detection means, and detects an approach of a hand during operation. Therefore, even when using an optical sensor that can be operated just by approaching because it can generate an operation signal, contact with the door or finger jamming due to inadvertent opening operation can be reliably eliminated and used. The safety of the person can be secured.

  The invention according to claim 10 is the refrigerator according to any one of claims 1 to 6, wherein the operation detection means uses a sheet switch, and operates by energizing only by touching. Even when using a seat switch that can be operated with a light touch to enable signal generation, contact with the door due to inadvertent opening or finger jamming can be reliably eliminated, and user safety is ensured. Can be secured.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a side view of the refrigerator according to Embodiment 1, and FIG. 3 is a block diagram of a door opening operation of the refrigerator according to Embodiment 1. FIG. 4 is a flowchart of the door opening operation of the refrigerator in the first embodiment.

  1, 2, and 3, the refrigerator 1 includes a refrigerator body 2 having heat insulation properties and a plurality of doors 18, 19, 20, 21, and 22 having heat insulation properties. The refrigerator body 2 includes a plurality of storage chambers whose front surfaces are opened, that is, a refrigeration chamber 13, an ice making chamber 15, a switching chamber 16, a vegetable chamber 14, and a freezing chamber 17 in order from the top. At this time, the ice making chamber 15 and the switching chamber 16 are arranged in parallel at the same height, and the ice making chamber 15 is arranged on the left side and the switching chamber 16 is arranged on the right side as viewed from the front. In addition, a plurality of doors corresponding to the plurality of storage rooms and capable of opening and closing the openings of the respective storage rooms, that is, the refrigerator compartment door 18, the ice making compartment door 20, the switching compartment door 21, and the vegetable compartment A door 19 and a freezer compartment door 22 are arranged. Here, the refrigerator compartment door 18 is divided into a right door 18a and a left door 18b on the left and right sides. From the refrigerator main body 2, the hinge pin 23 facing up and down is extended | stretched, and the one end of the right door 18a and the left door 18b of a refrigerator compartment is pivotally supported. The right door 18a and the left door 18b of the refrigerator compartment can rotate around the hinge pin 23 and can be opened and closed. The vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22 are drawer type doors that can be opened and closed by sliding in the forward direction.

  An operation unit 25 is disposed on the right door 18a of the refrigerator compartment. A plastic material such as ABS resin is used as a main material constituting the operation unit 25. In addition, when rigidity is required for the operation unit 25, an extruded aluminum material, a stainless steel plate, or the like can be used. Further, at least a part of the operation unit 25 is disposed on the opposite side from the rotation axis centered on the hinge pin 23, that is, on the counter-rotation axis side of the center line of the right door 18a of the refrigerator compartment. The arrangement height of the operation unit 25 is set in a range of 900 mm to 1300 mm from the floor surface. This is set in consideration of the distance from the floor surface to the elbow of a standard Japanese woman (height 155 cm) is 970 mm and the distance from the floor surface to the shoulder is 1265 mm. . The lower limit dimension of 900 mm is a range that can be reached when a woman bends the elbow lightly, and lifting the arm above the shoulder is physically burdensome, so the upper limit dimension is set to 1300 mm, and the operating range 25 is disposed. It was determined.

  Further, the operation detection means 26 pushed by a person is installed in the operation unit 25.

  A door opening means 28 is provided on the upper part of the refrigerator body 2 and operates a push rod 29 which is one of the components of the door opening means 28. Although not shown, as the door opening means 28, a motor-driven actuator, a solenoid-type driving device, or the like is used.

  A control means 30 is provided on the back surface of the refrigerator main body 2, between the operation detection means 26 and the control means 30 disposed in the operation unit 25, between the door opening means 28 and the control device 30, and the door. The open / close detection means 31 and the control device 30 are electrically connected.

  In FIG. 3, the door open / close detecting means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch, etc., and is interlocked with a normal interior lamp (not shown). When the door is closed, the door opening / closing detection means 31 is turned on and outputs a signal S1. The control means 30 determines whether or not to open the right door 18a of the refrigeration room from the input signal from both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26. The determination signal S3 is output to the door opening means 28.

  About the refrigerator 1 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG.

  As an example of the basic operation, the first embodiment will be described with respect to the case where the right door 18a of the refrigerator compartment is opened by the door opening means 28, and the operation detection means 26 as a piezoelectric sensor.

  First, in step 1, control of the door opening / closing operation is started. In step 2, the door opening means 28 is stopped. That is, the door opening means 28 for opening the right door 18a of the refrigerator compartment is put on standby in a stopped state, that is, in an initial state.

  Next, in step 3, the logic advances to step 4 if the external force F2 detected by the operation detection means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 2 if smaller.

  Here, the piezoelectric sensor 26 uses a piezoelectric element, detects an external force F as an acceleration, outputs a voltage V, and when there is no external force F, maintains a constant voltage output state at an initial voltage V0. Therefore, when the external force F is applied, the amplitude range fluctuates depending on the magnitude of the external force F at a constant frequency, and actually the peak value V2 is output. A threshold level V1 is provided between the voltage V0 and the output voltage V2, and it is determined that there is an external force F when V1 is exceeded. That is, when the external force (operation force) applied to the operation unit 25 installed on the right door 18a of the refrigerator compartment exceeds a threshold level, the control device 30 generates a signal S2 for opening the right door 18a of the refrigerator compartment. Output to. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, a state where the door opening means 28 is kept in the initial state (step 2) is repeated.

  Since the piezoelectric sensor 26 has a feature that it can detect even weak vibrations, there is a possibility of detecting vibrations caused by opening / closing operations of other doors and vibrations transmitted from the floor surface, but a filter circuit unit (not shown). Only a specific frequency (3 Hz to 5 Hz) can be amplified by cutting vibrations other than during operation to prevent malfunction.

  Next, in step 4, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 5; if any door is open, step 2 is executed. repeat. That is, if all the doors (the right door 18a, the left door 18b, the ice making door 20, the switching room door 21, the vegetable room door 19, and the freezing room door 22 of the refrigerator compartment) are closed, the door opening / closing detection means 31 is ON. The signal S1 is output to the control device 30 as follows. If there is even one opened door, the signal S1 is not output, so the door opening means 28 is stopped, that is, the state in which it is kept in the initial state (step 2) is repeated.

  Finally, in step 5, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means. To 28. Then, the door opening means 28 receives the judgment signal S3 from the control means 30, the door opening operation starts and the right door 18a of the refrigerator compartment is opened, the push rod 29 is quickly stored, the operation is stopped, and the logic is Return to step 2.

  As described above, both the signal S1 from the door opening / closing detection means 31 for detecting the state in which the plurality of doors are opened and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input signals, and the control means 30 is used. Determines whether to open the door, and outputs a determination signal S3 to the door opening means 28. That is, if there is even one door that is opened, the door opening means 28 will not operate.

  Therefore, as in the first embodiment, the refrigerator compartment 13 is at the top, the ice making chamber 15 is on the left side in parallel with the same height, the switching chamber 16 is on the right side, and the vegetables are below it. In the refrigerator having the chamber 14 and the freezer compartment 17, the refrigerator compartment 13 is provided with door opening means 28 capable of opening the right door 18a of the refrigerator compartment, and at least the switching chamber 16 adjacent to the right door 18a of the refrigerator compartment or A door open / close detection means 31 is installed in the switching chamber door 21, or the ice making chamber 15 or ice making door 20, or the left door 18b of the refrigerating chamber 13 and at this time, for example, the door 21 of the switching chamber 16 is opened. If it is, the door opening means 28 that opens the right door 18a of the refrigerator compartment is controlled so as not to operate.

  Thus, in the case where the adjacent door is opened, in particular, the door opening device 28 is provided in the rotary refrigerator door 18 as described above, and a drawer-type door is provided adjacent to the lower part thereof. The type of configuration that is present is the most dangerous. In such a case, when you put your hand in the drawer and put in or out the stored items, if the door 18 of the adjacent rotating refrigerating chamber is accidentally opened, it will hit your finger or hand. Is very dangerous. Such an electric door opening means 28 usually has the fastest speed when opened slightly from the fully closed state of the refrigerator, and there is a possibility of serious injury if a hand is caught in the drawer type door in such a high speed state. However, according to the present invention, particularly when the door adjacent to the door where the door opening means 28 is installed is opened, contact with the door due to inadvertent opening operation or finger jamming is prevented. Can be secured.

  Further, when the door opening device 28 is provided in the rotary refrigerator compartment door 18 as in the present embodiment, the adjacent drawers may be a plurality of drawer doors, which are small and light in weight. By arranging the door 21 and the ice making room door 20, even if the user pinches the hand or finger, the rotary refrigerator compartment door 18 opens with the hand in the drawer, Since the weight of the drawer is light, the drawer can be easily opened, and the danger of causing a serious injury to the user can be avoided.

  Moreover, when the vegetable compartment door 19 and the freezer compartment door 22 which are not adjacent are open | released, the freezer compartment door 22 arrange | positioned especially at the lowest part is open | released, and the storage thing is taken in / out of the freezer compartment. In some cases, the user often operates in a bent posture because of the arrangement, and if the refrigerator compartment door 18 is opened carelessly, the door may collide with the head or face from that posture. Although it was dangerous, according to this embodiment, even when the vegetable room door 19 and the freezing room door 22 which are not adjacent to each other are opened, contact with the door due to the opening operation can be prevented and safety is improved. It can be secured.

  Therefore, in the first embodiment, in addition to the signal S2 from the operation detection means (piezoelectric sensor) 26 provided in the refrigerator compartment 13, in the first embodiment, the door opening / closing provided in the switching chamber 16 or the switching chamber door 21 is provided. By using the signal S1 from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the respective signals, it is possible to eliminate contact with the door or finger jamming due to an inadvertent opening operation. Safe. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Even when the vegetable room door 19 and the freezer door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the right door 18a of the refrigerator compartment is controlled so as not to operate. Contact with the door by the prepared opening operation can be eliminated, and safety can be ensured. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the door opening / closing detection means 31 is not limited. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Also, the refrigerator compartment 13 is provided with a door opening means 28 that can open the right door 18a of the refrigerator compartment, and the door opening / closing detection means 31 is installed on the right door 18a of the refrigerator compartment. When the door 18a is opened, the door opening means 28 for opening the right door 18a of the refrigerator compartment is controlled so as not to operate. As a result, the right door 18a of the refrigerator compartment and the push rod 29 of the door opening means 28 do not collide, and the occurrence of quality problems such as breakage of the door opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the right door 18a of the refrigerator compartment, the operation unit 25 is present where it is most noticeable, the arrangement location can be clearly recognized, and unintended door movement can be performed. Can be prevented.

  The operation unit 25 is not limited to the right door 18a of the refrigerator compartment, but is a drawer-type door that can be opened and closed by sliding in the front direction, the vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, By providing an operation unit on the handle of the freezer compartment door 22 or the like, the same control operation as described above is possible, and safety can be ensured in the same manner.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the first embodiment, the operation detection unit 26 has been described as a piezoelectric sensor, but an electrostatic sensor may be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S <b> 2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

(Embodiment 2)
FIG. 5 is a configuration block diagram of the door opening operation of the refrigerator according to the second embodiment of the present invention, and FIG. 6 is a flowchart of the door opening operation of the refrigerator according to the second embodiment.

  About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  1, 2, and 5, the refrigerator main body 2 includes a plurality of storage rooms whose front surfaces are opened, that is, a refrigerator room 13, an ice making room 15, a switching room 16, a vegetable room 14, A chamber 17 is provided. At this time, the ice making chamber 15 and the switching chamber 16 are arranged in parallel at the same height, and the ice making chamber 15 is arranged on the left side and the switching chamber 16 is arranged on the right side as viewed from the front. In addition, a plurality of doors corresponding to the plurality of storage rooms and capable of opening and closing the openings of the respective storage rooms, that is, the refrigerator compartment door 18, the ice making compartment door 20, the switching compartment door 21, and the vegetable compartment A door 19 and a freezer compartment door 22 are arranged.

  Here, the refrigerator compartment door 18 is divided into a right door 18a and a left door 18b on the left and right sides. From the refrigerator main body 2, the hinge pin 23 facing up and down is extended | stretched, and the one end of the right door 18a and the left door 18b of a refrigerator compartment is pivotally supported. The right door 18a and the left door 18b of the refrigerator compartment can rotate around the hinge pin 23 and can be opened and closed. The vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22 are drawer type doors that can be opened and closed by sliding in the forward direction.

  An operation unit 25 is disposed on the right door 18a of the refrigerator compartment. Further, at least a part of the operation unit 25 is disposed on the opposite side from the rotation axis centered on the hinge pin 23, that is, on the counter-rotation axis side of the center line of the right door 18a of the refrigerator compartment. The arrangement height of the operation unit 25 is set in a range of 900 mm to 1300 mm from the floor surface.

  Further, the operation detection means 26 pushed by a person is installed in the operation unit 25.

  A door opening means 28 is provided on the upper part of the refrigerator body 2 and operates a push rod 29 which is one of the components of the door opening means 28. Although not shown, as the door opening means 28, a motor-driven actuator, a solenoid-type driving device, or the like is used.

  A control means 30 is provided on the back surface of the refrigerator main body 2, between the operation detection means 26 and the control means 30 disposed in the operation unit 25, between the door opening means 28 and the control device 30, and the door. The open / close detection means 31 and the control device 30 are electrically connected.

  In FIG. 5, the door open / close detecting means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch, etc., and is linked with a normal interior lamp (not shown). When the door is closed, the signal S1 is output as the switch is turned on, and when the door is opened, the signal S1 ′ is output as the switch is turned off. The control means 30 determines the opening speed for opening the right door 18a of the refrigerator compartment from the input signals from both the signals S1 and S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26 as a normal speed V0. Whether to release at a slow speed of normal speed V0 or less. When determining to release at a normal speed V0, the determination signal S3 is used. Output to the door opening means 28. Here, the normal speed V0 is a speed at which the user does not feel slow as an opening operation in actual use.

  About the refrigerator 1 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG.

  As an example of the basic operation, the second embodiment will be described with respect to the case where the right door 18a of the refrigerator compartment is opened by the door opening means 28, and the operation detection means 26 as a piezoelectric sensor.

  First, in step 6, control of the door opening / closing operation is started. In step 7, the door opening means 28 is stopped. That is, the door opening means 28 for opening the right door 18a of the refrigerator compartment is put on standby in a stopped state, that is, in an initial state.

  Next, in step 8, the logic advances to step 9 if the external force F2 detected by the operation detecting means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 7 if smaller.

  When the external force F is applied to the piezoelectric sensor 26, the amplitude range fluctuates depending on the magnitude of the external force F at a constant frequency, and actually the peak value V2 is output. Therefore, this is determined as the magnitude F2 of the external force. Then, a threshold level V1 is provided between the initial voltage V0 and the output voltage V2, and when this V1 is exceeded, it is determined that there is an external force F. That is, when the external force (operation force) applied to the operation unit 25 installed on the right door 18a of the refrigerator compartment exceeds a threshold level, the control device 30 generates a signal S2 for opening the right door 18a of the refrigerator compartment. Output to. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, the state where the door opening means 28 is in the initial state (step 7) is repeated.

  Since the piezoelectric sensor 26 has a feature that it can detect even weak vibrations, there is a possibility of detecting vibrations caused by opening / closing operations of other doors and vibrations transmitted from the floor surface, but a filter circuit unit (not shown). Only a specific frequency (3 Hz to 5 Hz) can be amplified by cutting vibrations other than during operation to prevent malfunction.

  Next, in step 9, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 10; Advance logic. That is, if all the doors (the right door 18a, the left door 18b, the ice making door 20, the switching room door 21, the vegetable room door 19, and the freezing room door 22 of the refrigerator compartment) are closed, the door opening / closing detection means 31 is ON. The signal S1 is output to the control device 30 as follows. If there is even one open door, the signal S1 'is output to the control device 30.

  In step 10, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means 28. Output. Then, the door opening means 28 receives the judgment signal S3 from the control means 30, starts the door opening operation at the door opening operation speed V0, opens the right door 18a of the refrigerator compartment, and quickly pushes the push rod 29 after opening the door. Is stored and the operation is stopped, and the logic is returned to Step 7.

  On the other hand, in step 11, when both the signal S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 ′ is output to the door. Output to the opening means 28. Then, the door opening means 28 receives the determination signal S3 ′ from the control means 30, starts the door opening operation at a slow speed equal to or lower than the door opening operation speed V0, and opens the right door 18a of the refrigerator compartment. Quickly retracts push rod 29 to stop operation and returns logic to step 7.

  As described above, from the input signals from both the signals S1 and S1 ′ from the door open / close detection means 31 for detecting the open / closed states of the plurality of doors and the signal S2 from the operation detection means (piezoelectric sensor) 26, It is determined whether the opening speed for opening the right door 18a is the normal speed V0 or the slow speed of the normal speed V0 or less. When the normal speed V0 is opened, the determination signal S3 is set to the normal speed V0 or less. When the door is opened at a slower speed, a determination signal S3 ′ is output to the door opening means 28. That is, control is performed to change the operating speed of the door opening means 28 according to the open / closed state of the door.

  Therefore, as in the second embodiment, the refrigerator compartment 13 is at the top, the ice making chamber 15 is on the left side in parallel with the same height, the switching chamber 16 is on the right side, and the vegetables are below it. In the refrigerator having the chamber 14 and the freezer compartment 17, the refrigerator compartment 13 is provided with door opening means 28 capable of opening the right door 18a of the refrigerator compartment, and at least the switching chamber 16 adjacent to the right door 18a of the refrigerator compartment or A door open / close detection means 31 is installed in the switching chamber door 21, or the ice making chamber 15 or ice making door 20, or the left door 18b of the refrigerating chamber 13 and at this time, for example, the door 21 of the switching chamber 16 is opened. If it is, the door opening means 28 for opening the right door 18a of the refrigerating room starts the door opening operation at a slow speed equal to or lower than the door opening operation speed V0 and opens the right door 18a of the refrigerating room. As a result, especially when the door adjacent to the door where the door opening means 28 is installed is opened, the opening speed is slow even if the door is opened by an inadvertent opening operation. Thus, contact with the door, finger filling, etc. can be predicted, and safety can be ensured. Moreover, even when the vegetable compartment door 19 and the freezer compartment door 22 that are not adjacent to each other are opened, the opening speed is slow even when the door is opened due to an inadvertent opening operation, so that the door opening operation can be visually confirmed. The contact with the door can be predicted, and safety can be ensured.

  Therefore, in the second embodiment, in addition to the signal S2 from the operation detection means (piezoelectric sensor) 26 provided in the refrigerating chamber 13, the door opening / closing provided in the switching chamber 16 or the switching chamber door 21 in the second embodiment. By using the signals S1 and S1 ′ from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the signals S3 and S3 ′ for opening the right door 18a of the refrigerator compartment based on the respective signals. In addition, contact with the door due to inadvertent opening operation, finger filling, etc. can be eliminated, and safety can be ensured. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Even when the vegetable door 19 and the freezer door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the right door 18a of the refrigerator compartment is the door at a slow speed equal to or lower than the door opening operation speed V0. The opening operation is started and the right door 18a of the refrigerator compartment is opened. As a result, even if the door is opened due to an inadvertent opening operation, the opening speed is slow. Therefore, the door opening operation can be visually confirmed, and contact with the door, finger filling, etc. can be predicted, and safety can be ensured. .

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the doors are detected. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Further, the refrigerator compartment 13 is provided with a door opening means 28 capable of opening the right door 18a of the refrigerator compartment. When the door open / close detecting means 31 is installed on the right door 18a of the refrigerator compartment, the right door of the refrigerator compartment is provided. The door opening means 28 for opening the door 18a starts operating at a slow speed equal to or lower than the door opening operation speed V0. Therefore, the impact between the right door 18a of the refrigerator compartment and the push rod 29 of the door opening means 28 is Thus, quality problems such as breakage of the door opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the right door 18a of the refrigerator compartment, the operation unit 25 is present where it is most noticeable, the arrangement location can be clearly recognized, and unintended door movement can be performed. Can be prevented.

  The operation unit 25 is not limited to the right door 18a of the refrigerator compartment, but is a drawer-type door that can be opened and closed by sliding in the front direction, the vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, By providing an operation unit on the handle of the freezer compartment door 22 or the like, the same control operation as described above is possible, and safety can be ensured in the same manner.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the second embodiment, the operation detection unit 26 has been described as a piezoelectric sensor, but an electrostatic sensor can also be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

(Embodiment 3)
FIG. 7 is a front view of the refrigerator according to Embodiment 3 of the present invention.

  About the same structure as Embodiment 1 and Embodiment 2, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  3 and 7, the refrigerator 1 includes a refrigerator body 2 having heat insulation properties and a plurality of doors 18, 19, 20, 21, and 22 having heat insulation properties. The refrigerator body 2 includes a plurality of storage chambers whose front surfaces are opened, that is, a refrigeration chamber 13, an ice making chamber 15, a switching chamber 16, a vegetable chamber 14, and a freezing chamber 17 in order from the top. At this time, the ice making chamber 15 and the switching chamber 16 are arranged in parallel at the same height, and the ice making chamber 15 is arranged on the left side and the switching chamber 16 is arranged on the right side as viewed from the front. In addition, a plurality of doors corresponding to the plurality of storage rooms and capable of opening and closing the openings of the respective storage rooms, that is, the refrigerator compartment door 18, the ice making compartment door 20, the switching compartment door 21, and the vegetable compartment A door 19 and a freezer compartment door 22 are arranged. A hinge pin 23 is vertically extended from the refrigerator body 2 and pivotally supports one end of the refrigerator compartment door. The refrigerator compartment door 18 rotates around the hinge pin 23 and can be opened and closed. The vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22 are drawer type doors that can be opened and closed by sliding in the forward direction.

  An operation unit 25 is disposed in the refrigerator compartment door 18. Further, at least a part of the operation unit 25 is disposed on the substantially opposite side from the rotation axis centering on the hinge pin 23, that is, on the counter-rotation axis side with respect to the center line of the refrigerator compartment door 18. The arrangement height of the operation unit 25 is set in a range of 900 mm to 1300 mm from the floor surface.

  Further, the operation detection means 26 pushed by a person is installed in the operation unit 25.

  A door opening means 28 is provided on the upper part of the refrigerator body 2 and operates a push rod 29 which is one of the components of the door opening means 28.

  In FIG. 3, the door open / close detecting means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch, etc., and is interlocked with a normal interior lamp (not shown). When the door is closed, the door opening / closing detection means 31 is turned on and outputs a signal S1. The control means 30 determines whether or not to open the refrigerator compartment door 18 from the input signal from both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26, and determines when opening the door. The signal S3 is output to the door opening means 28.

  About the operation | movement of the refrigerator 1 comprised as mentioned above, although it becomes description using the door opening operation | movement flowchart shown in FIG. 4, although the layout of a refrigerator differs from Embodiment 1, embodiment Since the basic control 1 is the same, detailed description thereof is omitted.

  As an example of the basic operation, in the third embodiment, the case where the refrigerator door 18 is opened by the door opening means 28 and the operation detecting means 26 is a piezoelectric sensor.

  First, in step 1, control of the door opening / closing operation is started. In step 2, the door opening means 28 is stopped. That is, the door opening means 28 for opening the refrigerator compartment door 18 is put on standby in a stopped state, that is, in an initial state.

  Next, in step 3, the logic advances to step 4 if the external force F2 detected by the operation detection means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 2 if smaller. That is, when the external force (operation force) applied to the operation unit 25 installed in the refrigerator compartment door 18 exceeds the threshold level, a signal S2 for opening the refrigerator compartment door 18 is output to the control device 30. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, a state where the door opening means 28 is kept in the initial state (step 2) is repeated.

  Next, in step 4, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 5; if any door is open, step 2 is executed. repeat. That is, if all the doors (the refrigerator compartment door 18, the ice making compartment door 20, the switching compartment door 21, the vegetable compartment door 19, and the freezer compartment door 22) are closed, the door open / close detection means 31 is turned on and the signal S1 is controlled. Output to 30. If there is even one opened door, the signal S1 is not output, so the door opening means 28 is stopped, that is, the state in which it is kept in the initial state (step 2) is repeated.

  Finally, in step 5, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means. To 28. Then, the determination signal S3 from the control means 30 is received by the door opening means 28, the door opening operation is started, the refrigerator compartment door 18 is opened, the push rod 29 is quickly accommodated, the operation is stopped, and the logic is step 2 Return to.

  As described above, both the signal S1 from the door opening / closing detection means 31 for detecting the state in which the plurality of doors are opened and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input signals, and the control means 30 is used. Determines whether to open the door, and outputs a determination signal S3 to the door opening means 28. That is, if there is even one door that is opened, the door opening means 28 will not operate.

  Therefore, as in the third embodiment, the refrigerator compartment 13 is at the top, and next to the same height, the ice making chamber 15 is on the left side and the switching chamber 16 is on the right side. In the refrigerator having the chamber 14 and the freezer compartment 17, the refrigerator compartment 13 is provided with door opening means 28 that can open the refrigerator compartment door 18, and at least the switching compartment 16 or the switching compartment door 21 adjacent to the refrigerator compartment door 18. Alternatively, a door opening / closing detection means 31 is installed in the ice making room 15 or the ice making room door 20, and when the door 21 of the switching room 16 is opened at this time, for example, the door opening means for opening the refrigerator compartment door 18. 28 is controlled not to operate. As a result, especially when the door adjacent to the door on which the door opening means 28 is installed is opened, it is possible to prevent contact with the door due to an inadvertent opening operation, finger jamming, etc. Can be secured. Moreover, even when the vegetable compartment door 19 and the freezer compartment door 22 that are not adjacent to each other are opened, contact with the door due to an inadvertent opening operation can be prevented, and safety can be ensured.

  Therefore, in the third embodiment, in addition to the signal S2 from the operation detection means (piezoelectric sensor) 26 provided in the refrigerating chamber 13, the door opening / closing provided in the switching chamber 16 or the switching chamber door 21 in the third embodiment. By using the signal S1 from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the respective signals, it is possible to eliminate contact with the door or finger jamming due to an inadvertent opening operation. Safe. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Further, even when the vegetable room door 19 and the freezer room door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the refrigerator compartment door 18 is controlled so as not to operate. Contact with the door due to the opening operation, finger filling, etc. can be eliminated, and safety can be ensured. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the door opening / closing detection means 31 is not limited. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Further, when the refrigerating room 13 is provided with door opening means 28 capable of opening the refrigerating room door 18, and when the door opening / closing detecting means 31 is provided on the refrigerating room door 18, the refrigerating room door 18 is similarly opened. If it is, the door opening means 28 for opening the refrigerator compartment door 18 is controlled not to operate. Thus, the refrigerator compartment door 18 and the push rod 29 of the door opening means 28 do not collide, and quality problems such as breakage of the door opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the refrigerator compartment door 18, the operation unit 25 is present at the most noticeable position, so that the arrangement location can be clearly recognized and unintended door movement is prevented. Can do.

  The operation unit 25 is not limited to the refrigerating room door 18, but is a drawer-type door that can be opened and closed by sliding in the front direction, a vegetable room door 19, an ice making room door 20, a switching room door 21, a freezer room. By providing an operation portion on the handle of the door 22 or the like, the same control operation as described above can be performed, and safety can be ensured similarly.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the third embodiment, the operation detection unit 26 has been described as a piezoelectric sensor, but an electrostatic sensor may be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

(Embodiment 4)
FIG. 7 is a front view of the refrigerator in the fourth embodiment of the present invention.

  The same components as those in the first embodiment, the second embodiment, and the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  Since FIG. 7 is a refrigerator having the same layout as the refrigerator 1 described in the third embodiment, detailed description thereof is omitted.

  In FIG. 5, the door opening / closing detection means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch or the like, and is linked with a normal interior lamp (not shown). When the door is open, the signal S1 is output. When the door is opened, the switch is OFF and the signal S1 ′ is output. The control means 30 opens the refrigerating room door 18 at the normal speed V0 based on the input signals from both the signals S1 and S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26. To determine whether to open at a slow speed of normal speed V0 or less. When opening at normal speed V0, the judgment signal S3 is displayed. When opening at a slow speed of normal speed V0 or less, the judgment signal S3 ′ is opened. It outputs to the means 28. Here, the normal speed V0 is a speed at which the user does not feel slow as an opening operation in actual use.

  About the operation | movement of the refrigerator 1 comprised as mentioned above, although it becomes description using the door opening operation | movement flowchart shown in FIG. 6, although the layout of a refrigerator differs from Embodiment 2, embodiment Since the basic control 2 is the same, detailed description thereof is omitted.

  As an example of the basic operation, in the fourth embodiment, the case where the refrigerator door 18 is opened by the door opening means 28 and the operation detecting means 26 is a piezoelectric sensor.

  First, in step 6, control of the door opening / closing operation is started. In step 7, the door opening means 28 is stopped. That is, the door opening means 28 for opening the refrigerator compartment door 18 is put on standby in a stopped state, that is, in an initial state.

  Next, in step 8, the logic advances to step 9 if the external force F2 detected by the operation detecting means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 7 if smaller. That is, when the external force (operation force) applied to the operation unit 25 installed in the refrigerator compartment door 18 exceeds the threshold level, a signal S2 for opening the refrigerator compartment door 18 is output to the control device 30. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, the state where the door opening means 28 is in the initial state (step 7) is repeated.

  Next, in step 9, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 10; Advance logic. That is, if all the doors (the refrigerator compartment door 18, the ice making compartment door 20, the switching compartment door 21, the vegetable compartment door 19, and the freezer compartment door 22) are closed, the door open / close detection means 31 is turned on and the signal S1 is controlled. Output to 30. If there is even one open door, the signal S1 'is output to the control device 30.

  In step 10, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means 28. Output. Then, the door opening means 28 receives the judgment signal S3 from the control means 30, starts the door opening operation at the door opening operation speed V0, opens the refrigerator compartment door 18, and quickly stores the push rod 29 after the door is opened. Then the operation is stopped and the logic is returned to step 7.

  On the other hand, in step 11, when both the signal S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 ′ is output to the door. Output to the opening means 28. Then, the door opening means 28 receives the determination signal S3 ′ from the control means 30, starts the door opening operation at a slow speed equal to or lower than the door opening operation speed V0, opens the refrigerator compartment door 18, and quickly opens the door. The push rod 29 is retracted to stop the operation, and the logic returns to step 7.

  As described above, the refrigerator compartment door is obtained from the input signals from both the signals S1 and S1 ′ from the door open / close detecting means 31 for detecting the open / closed states of the plurality of doors and the signal S2 from the operation detecting means (piezoelectric sensor) 26. It is determined whether the door 18 is opened at the normal speed V0 or at a slow speed that is lower than the normal speed V0. When the door is opened at the normal speed V0, the judgment signal S3 is slowed down at the normal speed V0 or lower. When opening at a speed, a determination signal S3 ′ is output to the door opening means 28. That is, control is performed to change the operating speed of the door opening means 28 according to the open / closed state of the door.

  Therefore, as in the fourth embodiment, the refrigeration chamber 13 is at the top, the ice making chamber 15 is on the left side and the switching chamber 16 is on the right side in parallel with the same height. In the refrigerator having the chamber 14 and the freezer compartment 17, the refrigerator compartment 13 is provided with door opening means 28 that can open the refrigerator compartment door 18, and at least the switching compartment 16 or the switching compartment door 21 adjacent to the refrigerator compartment door 18. Alternatively, a door opening / closing detection means 31 is installed in the ice making room 15 or the ice making room door 20, and when the door 21 of the switching room 16 is opened at this time, for example, the door opening means for opening the refrigerator compartment door 18. 28 starts the door opening operation at a slow speed equal to or lower than the door opening operation speed V0 and opens the refrigerator compartment door 18. As a result, especially when the door adjacent to the door where the door opening means 28 is installed is opened, the opening speed is slow even if the door is opened by an inadvertent opening operation. Thus, contact with the door, finger filling, etc. can be predicted, and safety can be ensured. Also, at this time, if a warning is given by a buzzer before the door opening operation is started and then the door is opened at a slow opening speed, the user can predict the opening of the door, thereby improving the safety of the door opening operation. Can be made. Moreover, even when the vegetable compartment door 19 and the freezer compartment door 22 that are not adjacent to each other are opened, the opening speed is slow even when the door is opened due to an inadvertent opening operation, so that the door opening operation can be visually confirmed. The contact with the door can be predicted, and safety can be ensured.

  Therefore, in the fourth embodiment, in addition to the signal S2 from the operation detecting means (piezoelectric sensor) 26 provided in the refrigerator compartment 13, in the fourth embodiment, the door opening / closing provided in the switching chamber 16 or the switching chamber door 21 is provided. By using the signals S1 and S1 ′ from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the signals S3 and S3 ′ for opening the refrigerator compartment door 18 based on the respective signals. Contact with the door and fingering, etc. due to the prepared opening operation can be eliminated, and safety can be ensured. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Even when the vegetable room door 19 and the freezer room door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the refrigerator compartment door 18 opens the door at a slow speed equal to or lower than the door opening operation speed V0. And the refrigerator compartment door 18 is opened. As a result, even if the door is opened due to an inadvertent opening operation, the opening speed is slow. Therefore, the door opening operation can be visually confirmed, and contact with the door, finger filling, etc. can be predicted, and safety can be ensured. .

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the door opening / closing detection means 31 is not limited. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Further, when the refrigerator compartment 13 is provided with door opening means 28 capable of opening the refrigerator compartment door 18, and when the door opening / closing detection means 31 is installed on the refrigerator compartment door 18, the door for opening the refrigerator compartment door 18 is opened. Since the opening means 28 starts the operation of the push rod 29 at a slow speed equal to or lower than the door opening operation speed V0, the impact between the refrigerator compartment door 18 and the push rod 29 of the door opening means 28 is mitigated. Generation of quality problems such as breakage of the opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the refrigerator compartment door 18, the operation unit 25 is present at the most noticeable position, so that the arrangement location can be clearly recognized and unintended door movement is prevented. Can do.

  The operation unit 25 is not limited to the refrigerating room door 18, but is a drawer-type door that can be opened and closed by sliding in the front direction, a vegetable room door 19, an ice making room door 20, a switching room door 21, a freezer room. By providing an operation portion on the handle of the door 22 or the like, the same control operation as described above can be performed, and safety can be ensured similarly.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the fourth embodiment, the operation detection unit 26 has been described as a piezoelectric sensor. However, an electrostatic sensor may be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S <b> 2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

(Embodiment 5)
FIG. 8 is a front view of the refrigerator in the fifth embodiment of the present invention.

  The same components as those of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  3 and 8, the refrigerator 1 includes a refrigerator body 2 having heat insulation properties and a plurality of doors 18, 19, 20, 21, and 22 having heat insulation properties. The refrigerator body 2 includes a plurality of storage chambers whose front surfaces are opened, that is, a refrigeration chamber 13, a vegetable chamber 14, an ice making chamber 15, a switching chamber 16, and a freezing chamber 17 in order from the top. At this time, the ice making chamber 15 and the switching chamber 16 are arranged in parallel at the same height, and the ice making chamber 15 is arranged on the left side and the switching chamber 16 is arranged on the right side as viewed from the front. In addition, a plurality of doors corresponding to the plurality of storage rooms and capable of opening and closing the openings of the respective storage rooms, that is, the refrigerator compartment door 18, the vegetable compartment door 19, the ice making compartment door 20, and the switching compartment. A door 21 and a freezer compartment door 22 are arranged. A hinge pin 23 is vertically extended from the refrigerator body 2 and pivotally supports one end of the refrigerator compartment door. The refrigerator compartment door 18 rotates around the hinge pin 23 and can be opened and closed. The vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22 are drawer type doors that can be opened and closed by sliding in the forward direction.

  An operation unit 25 is disposed in the refrigerator compartment door 18. Further, at least a part of the operation unit 25 is disposed on the substantially opposite side from the rotation axis centering on the hinge pin 23, that is, on the counter-rotation axis side with respect to the center line of the refrigerator compartment door 18. The arrangement height of the operation unit 25 is set in a range of 900 mm to 1300 mm from the floor surface.

  Further, the operation detection means 26 pushed by a person is installed in the operation unit 25.

  A door opening means 28 is provided on the upper part of the refrigerator body 2 and operates a push rod 29 which is one of the components of the door opening means 28.

  In FIG. 3, the door open / close detecting means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch, etc., and is interlocked with a normal interior lamp (not shown). When the door is closed, the door opening / closing detection means 31 is turned on and outputs a signal S1. The control means 30 determines whether or not to open the refrigerator compartment door 18 from the input signal from both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26, and determines when opening the door. The signal S3 is output to the door opening means 28.

  About the operation | movement of the refrigerator 1 comprised as mentioned above, although it becomes description using the door opening operation | movement flowchart shown in FIG. 4, although the layout of a refrigerator differs from Embodiment 1, embodiment Since the basic control 1 is the same, detailed description thereof is omitted.

  As an example of the basic operation, the fifth embodiment uses a case where the refrigerator door 18 is opened by the door opening means 28 and the operation detecting means 26 is a piezoelectric sensor.

  First, in step 1, control of the door opening / closing operation is started. In step 2, the door opening means 28 is stopped. That is, the door opening means 28 for opening the refrigerator compartment door 18 is put on standby in a stopped state, that is, in an initial state.

  Next, in step 3, the logic advances to step 4 if the external force F2 detected by the operation detection means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 2 if smaller. That is, when the external force (operation force) applied to the operation unit 25 installed in the refrigerator compartment door 18 exceeds the threshold level, a signal S2 for opening the refrigerator compartment door 18 is output to the control device 30. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, a state where the door opening means 28 is kept in the initial state (step 2) is repeated.

  Next, in step 4, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 5; if any door is open, step 2 is executed. repeat. That is, if all the doors (the refrigerator compartment door 18, the vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22) are closed, the door opening / closing detection means 31 is turned on and the signal S1 is controlled. Output to 30. If there is even one opened door, the signal S1 is not output, so the door opening means 28 is stopped, that is, the state in which it is kept in the initial state (step 2) is repeated.

  Finally, in step 5, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means. To 28. Then, the determination signal S3 from the control means 30 is received by the door opening means 28, the door opening operation is started, the refrigerator compartment door 18 is opened, the push rod 29 is quickly accommodated, the operation is stopped, and the logic is step 2 Return to.

  As described above, both the signal S1 from the door opening / closing detection means 31 for detecting the state in which the plurality of doors are opened and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input signals, and the control means 30 is used. Determines whether to open the door, and outputs a determination signal S3 to the door opening means 28. That is, if there is even one door that is opened, the door opening means 28 will not operate.

  Therefore, as in the fifth embodiment, the refrigerator compartment 13 is at the top, then the vegetable compartment 14, and the ice making room 15 is on the left side parallel to the same height, and the switching room 16 is on the right side. In the refrigerator having the freezer compartment 17 below, the refrigerator compartment 13 is provided with door opening means 28 that can open the refrigerator compartment door 18, and at least the vegetable compartment 14 or vegetables adjacent to the refrigerator compartment door 18 are installed. The door opening / closing detection means 31 is installed in the room door 19. When the vegetable room door 19 is opened at this time, for example, the door opening means 28 for opening the refrigerator compartment door 18 is controlled so as not to operate. . As a result, especially when the door adjacent to the door on which the door opening means 28 is installed is opened, it is possible to prevent contact with the door due to an inadvertent opening operation, finger jamming, etc. Can be secured. Further, even when the ice making room door 20, the switching room door 21, and the freezing room door 22 that are not adjacent to each other are opened, contact with the door due to inadvertent opening operation can be prevented and safety can be ensured. .

  Therefore, in the third embodiment, in addition to the signal S2 from the operation detection means (piezoelectric sensor) 26 provided in the refrigerator compartment 13, the door opening / closing provided in the vegetable compartment 14 or the vegetable compartment door 19 is provided in the third embodiment. By using the signal S1 from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the respective signals, it is possible to eliminate contact with the door or finger jamming due to an inadvertent opening operation. Safe. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Further, even when the ice making room door 20, the switching room door 21, and the freezing room door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the refrigerating room door 18 is controlled not to operate. Therefore, it is possible to eliminate contact with the door or fingering due to inadvertent opening operation, thereby ensuring safety. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the door opening / closing detection means 31 is not limited. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Further, when the refrigerating room 13 is provided with door opening means 28 capable of opening the refrigerating room door 18, and when the door opening / closing detecting means 31 is provided on the refrigerating room door 18, the refrigerating room door 18 is similarly opened. If it is, the door opening means 28 for opening the refrigerator compartment door 18 is controlled not to operate. Thus, the refrigerator compartment door 18 and the push rod 29 of the door opening means 28 do not collide, and quality problems such as breakage of the door opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the refrigerator compartment door 18, the operation unit 25 is present at the most noticeable position, so that the arrangement location can be clearly recognized and unintended door movement is prevented. Can do.

  The operation unit 25 is not limited to the refrigerating room door 18, but is a drawer-type door that can be opened and closed by sliding in the front direction, a vegetable room door 19, an ice making room door 20, a switching room door 21, a freezer room. By providing an operation portion on the handle of the door 22 or the like, the same control operation as described above can be performed, and safety can be ensured similarly.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the fifth embodiment, the operation detecting means 26 has been described as a piezoelectric sensor, but an electrostatic sensor can also be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S <b> 2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

(Embodiment 6)
FIG. 8 is a front view of the refrigerator in the sixth embodiment of the present invention.

  The same components as those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  Since FIG. 8 is a refrigerator having the same layout as the refrigerator 1 described in the fifth embodiment, detailed description thereof is omitted.

  In FIG. 5, the door opening / closing detection means 31 for detecting the open / closed state of the door generally uses a magnetic sensor, a push-type contact switch or the like, and is linked with a normal interior lamp (not shown). When the door is open, the signal S1 is output. When the door is opened, the switch is OFF and the signal S1 ′ is output. The control means 30 opens the refrigerating room door 18 at the normal speed V0 based on the input signals from both the signals S1 and S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means 26. To determine whether to open at a slow speed of normal speed V0 or less. When opening at normal speed V0, the judgment signal S3 is displayed. When opening at a slow speed of normal speed V0 or less, the judgment signal S3 ′ is opened. It outputs to the means 28. Here, the normal speed V0 is a speed at which the user does not feel slow as an opening operation in actual use.

  About the operation | movement of the refrigerator 1 comprised as mentioned above, although it becomes description using the door opening operation | movement flowchart shown in FIG. 6, although the layout of a refrigerator differs from Embodiment 2, embodiment Since the basic control 2 is the same, detailed description thereof is omitted.

  As an example of the basic operation, in the sixth embodiment, the case where the refrigerator door 18 is opened by the door opening means 28 and the operation detecting means 26 is a piezoelectric sensor.

  First, in step 6, control of the door opening / closing operation is started. In step 7, the door opening means 28 is stopped. That is, the door opening means 28 for opening the refrigerator compartment door 18 is put on standby in a stopped state, that is, in an initial state.

  Next, in step 8, the logic advances to step 9 if the external force F2 detected by the operation detecting means (piezoelectric sensor) 26 is larger than a preset threshold value F1, and to step 7 if smaller. That is, when the external force (operation force) applied to the operation unit 25 installed in the refrigerator compartment door 18 exceeds the threshold level, a signal S2 for opening the refrigerator compartment door 18 is output to the control device 30. If the threshold level is not exceeded, the signal S2 is not output, so the door opening means 28 is stopped, that is, the state where the door opening means 28 is in the initial state (step 7) is repeated.

  Next, in step 9, the door open / close detection means 31 detects the open / closed state of a plurality of doors. If all the doors are closed, the logic proceeds to step 10; Advance logic. That is, if all the doors (the refrigerator compartment door 18, the vegetable compartment door 19, the ice making compartment door 20, the switching compartment door 21, and the freezer compartment door 22) are closed, the door opening / closing detection means 31 is turned on and the signal S1 is controlled. Output to 30. If there is even one open door, the signal S1 'is output to the control device 30.

  In step 10, when both the signal S1 from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 is sent to the door opening means 28. Output. Then, the door opening means 28 receives the judgment signal S3 from the control means 30, starts the door opening operation at the door opening operation speed V0, opens the refrigerator compartment door 18, and quickly stores the push rod 29 after the door is opened. Then the operation is stopped and the logic is returned to step 7.

  On the other hand, in step 11, when both the signal S1 ′ from the door opening / closing detection means 31 and the signal S2 from the operation detection means (piezoelectric sensor) 26 are input to the control means 30 as input signals, the determination signal S3 ′ is output to the door. Output to the opening means 28. Then, the door opening means 28 receives the determination signal S3 ′ from the control means 30, starts the door opening operation at a slow speed equal to or lower than the door opening operation speed V0, opens the refrigerator compartment door 18, and quickly opens the door. The push rod 29 is retracted to stop the operation, and the logic returns to step 7.

  As described above, the refrigerator compartment door is obtained from the input signals from both the signals S1 and S1 ′ from the door open / close detecting means 31 for detecting the open / closed states of the plurality of doors and the signal S2 from the operation detecting means (piezoelectric sensor) 26. It is determined whether the door 18 is opened at the normal speed V0 or at a slow speed that is lower than the normal speed V0. When the door is opened at the normal speed V0, the judgment signal S3 is slowed down at the normal speed V0 or lower. When opening at a speed, a determination signal S3 ′ is output to the door opening means 28. That is, control is performed to change the operating speed of the door opening means 28 according to the open / closed state of the door.

  Accordingly, as in the sixth embodiment, the refrigerator compartment 13 is at the top, the vegetable compartment 14, and then the ice making room 15 on the left side in parallel with the same height, the switching room 16 on the right side. In the refrigerator having the freezer compartment 17 below, the refrigerator compartment 13 is provided with door opening means 28 that can open the refrigerator compartment door 18, and at least the vegetable compartment 14 or vegetables adjacent to the refrigerator compartment door 18 are installed. The door opening / closing detection means 31 is installed in the room door 19, and when the vegetable room door 19 is opened at this time, for example, the door opening means 28 for opening the refrigeration room door 18 operates at a door opening operating speed V0 or less. The door opening operation is started at a slow speed to open the refrigerator compartment door 18. As a result, especially when the door adjacent to the door where the door opening means 28 is installed is opened, the opening speed is slow even if the door is opened by an inadvertent opening operation. Thus, contact with the door, finger filling, etc. can be predicted, and safety can be ensured. Even when the ice making room door 20, the switching room door 21, and the freezing room door 22 that are not adjacent to each other are opened, the opening speed is slow even if the door is opened due to an inadvertent opening operation. Can be confirmed visually, and contact with the door can be predicted, so that safety can be ensured.

  Therefore, in the sixth embodiment, in addition to the signal S2 from the operation detection means (piezoelectric sensor) 26 provided in the refrigerator compartment 13, in the sixth embodiment, the door opening / closing provided in the vegetable compartment 14 or the vegetable compartment door 19 is provided. By using the signals S1 and S1 ′ from the detection means 31 as input information and controlling the operation of the door opening means 28 based on the signals S3 and S3 ′ for opening the refrigerator compartment door 18 based on the respective signals. Contact with the door and fingering, etc. due to the prepared opening operation can be eliminated, and safety can be ensured. Further, it is possible to eliminate an unsafe door operation due to erroneous detection due to vibration of the other door.

  Further, even when the ice making room door 20, the switching room door 21, and the freezing room door 22 which are not adjacent to each other are opened, the door opening means 28 for opening the refrigerating room door 18 is slower than the door opening operation speed V0. The door opening operation is started at a speed to open the refrigerator compartment door 18. As a result, even if the door is opened due to an inadvertent opening operation, the opening speed is slow. Therefore, the door opening operation can be visually confirmed, and contact with the door, finger filling, etc. can be predicted, and safety can be ensured. .

  As described above, the door opening / closing detection means 31 is not limited to a single door. If a plurality of door opening / closing detection means 31 are installed to detect the open / closed state with respect to other doors, not only the safety of only the individual doors but also the door opening / closing detection means 31 is not limited. The safety concerning the door opening and closing of the entire refrigerator can be secured.

  Further, when the refrigerator compartment 13 is provided with door opening means 28 capable of opening the refrigerator compartment door 18, and when the door opening / closing detection means 31 is installed on the refrigerator compartment door 18, the door for opening the refrigerator compartment door 18 is opened. Since the opening means 28 starts the operation of the push rod 29 at a slow speed equal to or lower than the door opening operation speed V0, the impact between the refrigerator compartment door 18 and the push rod 29 of the door opening means 28 is mitigated. Generation of quality problems such as breakage of the opening means 28 can be prevented.

  In addition, since the operation unit 25 is arranged on the refrigerator compartment door 18, the operation unit 25 is present at the most noticeable position, so that the arrangement location can be clearly recognized and unintended door movement is prevented. Can do.

  The operation unit 25 is not limited to the refrigerating room door 18, but is a drawer-type door that can be opened and closed by sliding in the front direction, a vegetable room door 19, an ice making room door 20, a switching room door 21, a freezer room. By providing an operation portion on the handle of the door 22 or the like, the same control operation as described above can be performed, and safety can be ensured similarly.

  In the case of the lowermost drawer-type door (freezer compartment door 22), the operation unit 25 may be configured as a foot switch that is operated with a foot.

  In the sixth embodiment, the operation detection means 26 has been described as a piezoelectric sensor, but an electrostatic sensor can also be used. In this case, when the operation unit 25 is touched, contact detection is determined based on a predetermined threshold, and when it is determined that there is a contact, a signal S <b> 2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use an optical sensor as the operation detection means 26. As an optical sensor, for example, there is a reflective infrared sensor or the like, and an intention to open the door is detected by inserting a hand as an operation to open the door to the operation unit 25, and a signal S2 is input to the control device 30. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  It is also possible to use a sheet switch as the operation detection means 26. The seat switch is in a state where the electrodes maintain a certain clearance. When the electrode contacts the seat switch, the seat switch is energized, and the signal S2 is input to the control device 30 as detection of the intention to open the door. To do. Thereafter, the door opening means 28 can be operated in the same manner as the above control. Similar to the piezoelectric sensor, a highly accurate sensor can maintain good operability and ensure safety due to malfunction.

  As described above, since the refrigerator according to the present invention can obtain a good operational feeling using a high-precision sensor and at the same time prevent unintentional door movement, the refrigerator for business use as well as home use, Can be applied to a structure having a plurality of door opening / closing mechanisms.

Front view of the refrigerator in Embodiment 1 of the present invention Side view of refrigerator in embodiment 1 of the present invention. Configuration block diagram of door opening operation of refrigerator in Embodiments 1, 3, and 5 of the present invention Flowchart of refrigerator door opening operation in Embodiments 1, 3, and 5 of the present invention Configuration block diagram of the door opening operation of the refrigerator in Embodiments 2, 4, and 6 of the present invention Flowchart of refrigerator door opening operation in Embodiments 2, 4, and 6 of the present invention Front view of refrigerator in embodiments 3 and 4 of the present invention Front view of the refrigerator in Embodiments 5 and 6 of the present invention Perspective view of a conventional refrigerator

Explanation of symbols

1 Refrigerator 2 Refrigerator body 13 Storage room (refrigerated room)
14 Storage room (vegetable room)
15 Storage room (ice making room)
16 Storage room (switching room)
17 Storage room (freezer room)
18 Door (Refrigerator door)
18a door (refrigerator right door)
18b door (refrigerator left door)
19 Door (vegetable room door)
20 doors (ice chamber doors)
21 Door (switching room door)
22 Door (freezer compartment door)
26 Operation detection means 28 Door opening means 30 Control means 31 Door open / close detection means

Claims (10)

  A refrigerator main body provided with a plurality of storage rooms, a plurality of doors provided to be openable and closable at openings of the storage rooms, a door opening means for opening at least one of the plurality of doors, and the door In the refrigerator having an operation detection means for detecting an operation signal of the opening means and a door open / close detection means for detecting the open / closed state of the door, the storage chamber in which at least the door opening means for opening the door is installed. Door opening / closing detection means for detecting the open / closed state of the door is installed in a storage chamber other than the above, and when the door opening means is operated, the door opening means is controlled based on a signal from the door opening / closing detection means. refrigerator.   A refrigerator main body provided with a plurality of storage rooms, a plurality of doors provided to be openable and closable at openings of the storage rooms, a door opening means for opening at least one of the plurality of doors, and the door In the refrigerator having an operation detection means for detecting an operation signal of the opening means and a door open / close detection means for detecting the open / closed state of the door, the storage chamber in which at least the door opening means for opening the door is installed. Door opening / closing detection means for detecting the open / closed state of the door is installed in the storage room adjacent to the door, and when the door opening means is operated, the door opening means is controlled based on a signal from the door opening / closing detection means. Refrigerator.   The control means stops the opening operation of the door opening means when any one of the plurality of doors provided in the opening of the storage room provided in the refrigerator main body is freely opened and closed. The refrigerator according to 1 or 2.   When any one of the plurality of doors provided in the opening of the storage room provided in the refrigerator body is openable, the control means slows the opening operation speed of the door opening means. Item 3. The refrigerator according to Item 1 or 2.   When any one of the plurality of doors provided in the opening of the storage room provided in the refrigerator main body is freely opened and closed, the door opening means is opened after warning by sound. The refrigerator according to claim 1 or 2.   The door in an open state among a plurality of doors provided in an opening of a storage room provided in the refrigerator main body so as to be opened and closed is a door adjacent to a door provided with a door opening means. To 5. The refrigerator according to any one of 5.   The refrigerator as described in any one of Claim 1 to 6 which used the piezoelectric sensor for the operation detection means.   The refrigerator as described in any one of Claim 1 to 6 which used the electrostatic sensor for the operation detection means.   The refrigerator as described in any one of Claim 1 to 6 which used the optical sensor for the operation detection means.   The refrigerator according to any one of claims 1 to 6, wherein a sheet switch is used as the operation detection means.

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