JP2009139018A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain a storing space for food from being reduced. <P>SOLUTION: When an L electromagnet 48, an R electromagnet 49, an I electromagnet 50 and an S electromagnet are respectively magnetized at a retreat position of an extension rod 56, a push head 59 is opposite to one of an L pusher 43, an R pusher 44, an I pusher 45 and an S pusher corresponding to the rotating position of the extension rod 56 from the rear based on the rotation of the extension rod 56. In this state, when a door operating solenoid 31 is actuated, the push head 59 moves from the backward position to the forward position, and among the L pusher 43 to S pusher, one in front of the push head 59 is pressed from the retreat position to the pressing position by the push head 59, whereby among a plurality of doors, one in front of the push head 59 is pressed forward from the closed state. Therefore, it is not necessary to store a door operating device in a cabinet in each door, so that the storing space of the cabinet can be restrained from being reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refrigerator including a door operation device that operates a door of a cabinet from a closed state to an open state.

Some refrigerators are configured to apply drive power to a drive source of a door operating device based on operation of an operator. This door operation device is provided with a pusher member that can move between the pressing position and the retracted position, and the pusher member moves from the retracted position to the pressed position based on the application of drive power to the drive source, The door is pushed forward from the closed state based on the movement of the pusher member from the retracted position to the pressed position.
Japanese Patent Application No. 2006-184987

  In the case of the refrigerator, a door operation device is housed in the cabinet. For this reason, when each of the plurality of doors is to be operated by the door operation device, it is necessary to store the door operation device for each door in the cabinet. Therefore, since the internal volume of the cabinet is reduced by an amount corresponding to the number of door operation devices, there arises a problem that the storage space for storing food is reduced.

  This invention is made | formed in view of the said situation, and it aims at providing the refrigerator which can operate each of several doors with a door operation apparatus, suppressing the storage space of a cabinet becoming small. Is.

  The refrigerator of the present invention is movable between a box-shaped cabinet whose front side is a user side, a closed state where the front surface of the cabinet is closed, and an open state where the front surface of the cabinet is opened. A plurality of doors adjacent to each other, a pressing position which is provided for each of the plurality of doors and presses the door forward in a closed state of the door, and a position behind the pressing position, and A plurality of pusher members movable between retreat positions separated from the door in a closed state of the door, and a retreat position and a forward position ahead of the retreat position, which are rotatable about an axis extending in the front-rear direction. A movable member movable between each other, and the plurality of pushers provided on the movable member based on the movable member rotating about the axis at the retracted position. An operation member that moves in the circumferential direction so as to face each of the members from the rear, and an operation that moves the operation member in the circumferential direction based on rotating the movable member around the axis at the retracted position. The first driving source, a second driving source for moving the movable member between the retracted position and the advanced position, and driving control of the first driving source. A first drive control means for controlling a rotational position, wherein the operating member is opposed to one of the plurality of pusher members according to the rotational position of the movable member from the rear; and the second drive The movable member is moved between the retracted position and the forward position based on driving control of a source, and is based on moving the movable member from the retracted position to the forward position. The second drive for pressing the pusher member in front of the operating member from the retracted position to the pressing position by the operating member and pressing the door in front of the pusher member from the closed state to the front by the pusher member. It is characterized in that it has a control means.

  When the first drive source is operated at the retracted position of the movable member, the operation member moves in the circumferential direction based on the rotation of the movable member about the axis, and the operation member moves the movable member among the plurality of pusher members. It faces one thing according to the rotational position from the rear. When the second drive source is activated in this state, the operating member moves from the retracted position to the advanced position, and one pusher member in front of the operating member is pressed from the retracted position to the pressed position by the operating member. The door in front of the member is pushed forward from the closed state by one pusher member. For this reason, each of the plurality of doors can be selectively operated forward from the closed state by a common door operation device, so that it is not necessary to store the door operation device for each door in the cabinet. Therefore, it can suppress that the storage space of a cabinet becomes small.

[Example 1]
As shown in FIG. 1, the cabinet 1 has a box shape with an open front, and has a vertically long rectangular shape having a bottom plate, a left side plate, a right side plate, a top plate, and a rear plate. The cabinet 1 is configured by storing an inner box inside an outer box and filling a gap between the outer box and the inner box with a heat insulating material. The wall 2 is fixed. The upper heat insulating partition wall 2 is configured by housing a solid heat insulating material in a hollow case, and the cabinet 1 is located above the upper heat insulating partition wall 2 in the refrigerator compartment 3. Is formed.

  As shown in FIG. 2, the L door 4 and the R door 5 are mounted on the cabinet 1 in front of the refrigerator compartment 3. The L door 4 is configured to be rotatable around a vertical axis 6 between a closed state in which the left half of the front surface of the refrigerator compartment 3 is closed and an open state in which the left half is opened. Reference numeral 5 denotes a rotatable state about a vertical axis 7 between a closed state in which the right half of the front face of the refrigerator compartment 3 is closed and an open state in which the right half is opened. Each of the L door 4 and the R door 5 corresponds to a door, and the refrigerator compartment 3 corresponds to a storage compartment.

  A rubber gasket 8 is fixed to each of the rear surface of the L door 4 and the rear surface of the R door 5 as shown in FIG. The gasket 8 of the L door 4 has a frame shape surrounding the L door 4, and the L door 4 is in a closed state of the L door 4, and the gasket 8 contacts the front surfaces of the cabinet 1 and the upper heat insulating partition wall 2. Based on this, the left half of the refrigerator compartment 3 is sealed. The gasket 8 of the R door 5 has a frame shape surrounding the R door 5, and the R door 5 comes into contact with the front surfaces of the cabinet 1 and the upper heat insulating partition wall 2 in the closed state of the R door 5. Based on this, the right half of the refrigerator compartment 3 is sealed. A cold air outlet is fixed to the chamber wall of the refrigerator compartment 3, and the inside of the refrigerator compartment 3 is supplied with cold air from the cold air outlet when the L door 4 and the R door 5 are closed. The temperature is controlled in a refrigerated temperature range where refrigeration can be stored.

  Each of the L door 4 and the R door 5 is formed with a vertically long handle portion 9 as shown in FIG. The handle portion 9 of the L door 4 is for the user to operate the L door 4 by hooking his / her finger, and the L door button 10 corresponding to an operator is attached to the handle portion 9 of the L door 4. Has been. The handle portion 9 of the R door 5 is for the user to operate the R door 5 by hooking his / her finger, and the R door button 11 corresponding to the operator is attached to the handle portion 9 of the R door 5. Has been. Each of the L door button 10 and the R door button 11 can be operated from the front by the user, and is linearly movable in the front-rear direction between the initial position and the pushing position behind the initial position. .

  A permanent magnet is connected to each of the L door button 10 and the R door button 11. The permanent magnet of the L door button 10 is housed inside the L door 4 so as to be positioned in front of the upper heat insulating partition wall 2, moves to the operating position when the L door button 10 is pushed, and moves to the L door button 10. It moves to the non-operation position ahead of the operation position at the initial position. The permanent magnet of the R door button 11 is housed inside the R door 5 so as to be positioned in front of the upper heat insulating partition wall 2, moves to the operation position when the R door button 11 is pushed, and moves to the R door button 11. It moves to the non-operation position ahead of the operation position at the initial position.

  As shown in FIG. 1, a horizontal middle heat insulating partition wall 12 positioned below the upper heat insulating partition wall 2 is fixed inside the cabinet 1. The middle heat insulating partition wall 12 is configured by housing a solid heat insulating material in a hollow case, and the cabinet 1 has an interior between the upper heat insulating partition wall 2 and the middle heat insulating partition wall 12. The ice making chamber 13 and the select chamber are arranged side by side in the left-right direction. As shown in FIG. 2, the cabinet 1 is provided with an I slide door 14 located in front of the ice making chamber 13 and an S slide door 15 located in front of the select chamber. The I-sliding door 14 is linearly movable in the front-rear direction between a closed state in which the front surface of the ice making chamber 13 is closed and an open state in which the front surface of the ice making chamber 13 is opened. It is configured to be linearly movable in the front-rear direction between a closed state in which the front surface of the chamber is closed and an open state in which the front surface of the select chamber is opened. Each of the I slide door 14 and the S slide door 15 corresponds to a door, and each of the ice making chamber 13 and the select chamber corresponds to a storage chamber.

  A rubber gasket 16 is fixed to each of the rear surface of the I slide door 14 and the rear surface of the S slide door 15 as shown in FIG. The gasket 16 of the I-sliding door 14 has a frame shape surrounding the I-sliding door 14. The I-sliding door 14 is in a closed state of the I-sliding door 14, and the gasket 16 is insulated from the cabinet 1, the upper heat insulating partition wall 2, and the middle heat insulating. The ice making chamber 13 is sealed based on contact with the front surfaces of the partition walls 12. The gasket 16 of the S-sliding door 15 has a frame shape surrounding the S-sliding door 15, and the S-sliding door 15 is in the closed state of the S-sliding door 15, and the gasket 16 is in the cabinet 1, the upper heat insulating partition wall 2, and the middle heat insulating. The select chamber is sealed based on contact with the front surfaces of the partition walls 12. A cold air outlet is fixed to each of the chamber wall of the ice making chamber 13 and the chamber wall of the select chamber, and the inside of the ice making chamber 13 is supplied with cold air from the cold air outlet when the I slide door 14 is closed. Based on the fact that the temperature is controlled to an ice making temperature range in which water can be frozen based on the fact that the cold air is supplied from the cold air outlet while the S slide door 15 is closed, the food can be refrigerated and stored. It is controlled to either a refrigerated temperature range or a freezing temperature range where food can be stored frozen.

  Each of the I slide door 14 and the S slide door 15 is formed with a horizontally long handle 17 as shown in FIG. A handle 17 of the I-slide door 14 is used by the user to operate the I-slide door 14 by hooking a finger. The handle 17 of the I-slide door 14 has an I-door button corresponding to an operator. 18 is mounted. The handle portion 17 of the S slide door 15 is for a user to operate the S slide door 15 by hooking a finger, and the handle portion 17 of the S slide door 15 has an S door button corresponding to an operator. 19 is installed. Each of the I door button 18 and the S door button 19 can be operated from the front by the user, and is linearly movable in the front-rear direction between the initial position and the pushing position behind the initial position. .

  A permanent magnet is connected to each of the I door button 18 and the S door button 19. The permanent magnet of the I-door button 18 is housed inside the I-slide door 14 so as to be positioned in front of the upper heat insulating partition wall 2 and moves to the operating position when the I-door button 18 is pushed. It moves to the non-operation position ahead of the operation position at the initial position of 18. The permanent magnet of the S door button 19 is housed inside the S slide door 15 so as to be positioned in front of the upper heat insulating partition wall 2 and moves to the operation position when the S door button 19 is pushed. It moves to the non-operation position ahead of the operation position at the initial position of 19.

  As shown in FIG. 1, a horizontal lower heat insulating partition wall 20 positioned below the middle heat insulating partition wall 12 is fixed inside the cabinet 1. The lower heat insulating partition wall 20 is configured by housing a solid heat insulating material in a hollow case, and the inside of the cabinet 1 is between the middle heat insulating partition wall 12 and the lower heat insulating partition wall 20. A freezer compartment 21 is formed and a vegetable compartment 22 is formed below the lower heat insulating partition wall 20. The cabinet 1 is provided with an F slide door 23 located in front of the freezer compartment 21 and a V slide door 24 located in front of the vegetable compartment 22. The F slide door 23 is linearly movable in the front-rear direction between a closed state in which the front surface of the freezer compartment 21 is closed and an open state in which the front surface of the freezer compartment 21 is opened, and the V slide door 24 is a vegetable. It is made linearly movable in the front-rear direction between a closed state in which the front surface of the chamber 22 is closed and an open state in which the front surface of the vegetable chamber 22 is opened.

  A rubber gasket 25 is fixed to the rear surface of the F slide door 23 as shown in FIG. The gasket 25 has a frame shape surrounding the F-sliding door 23. The F-sliding door 23 is in a closed state of the F-sliding door 23, and the gasket 25 includes the cabinet 1, the middle heat insulating partition wall 12, and the lower heat insulating partition wall 20. The freezer compartment 21 is sealed based on contact with each front surface. A cold air outlet is fixed to the chamber wall of the freezer compartment 21, and the food in the freezer compartment 21 is stored frozen based on the fact that cold air is supplied from the cold air outlet when the F slide door 23 is closed. Is controlled to the freezing temperature range.

  As shown in FIG. 1, a rubber gasket 26 is fixed to the rear surface of the V slide door 24. The gasket 26 has a frame shape surrounding the V-sliding door 24. The V-sliding door 24 is in a closed state of the V-sliding door 24, and the gasket 26 contacts the front surfaces of the cabinet 1 and the lower heat insulating partition wall 20. Based on this, the vegetable compartment 22 is sealed. A cold air outlet is fixed to the wall of the vegetable compartment 22, and food is stored in the vegetable compartment 22 based on the fact that cold air is supplied from the cold air outlet when the V slide door 24 is closed. Is controlled to the refrigerated temperature range.

  As shown in FIG. 3, a door operation device 30 is accommodated inside the cabinet 1. The door operation device 30 is for moving the L door 4, the R door 5, the I slide door 14, and the S slide door 15 forward from the closed state, and is configured as follows. A door operation solenoid 31 corresponding to a second drive source is fixed inside the upper heat insulating partition wall 2. The door operation solenoid 31 is an electromagnetic solenoid and includes a solenoid case 32, a solenoid coil 33, and a plunger 34. The solenoid case 32 has a cylindrical shape having a front plate and a rear plate. The solenoid coil 33 has a cylindrical shape in which each of the front surface and the rear surface is open, and is fixed inside the solenoid case 32. The plunger 34 has a cylindrical shape extending linearly in the front-rear direction, and is inserted into the solenoid coil 33 so as to be linearly movable in the front-rear direction and rotatable about the axis line CL.

  As shown in FIG. 3, the rear end portion of the plunger 34 passes through the rear plate of the solenoid case 32 and protrudes rearward of the solenoid case 32. The rear end portion of the plunger 33 is positioned outside the solenoid case 32. And the collar part 35 is being fixed. The flange 35 has a disk shape having a diameter larger than that of the plunger 34, and a return spring 36 is located on the outer periphery of the plunger 34 between the flange 35 and the rear plate of the solenoid case 32. Has been inserted. The return spring 36 is composed of a compression coil spring. The plunger 34 is operated by the spring force of the return spring 36 to a retracted position where the return spring 36 is extended to a natural state when the solenoid coil 33 is in an off state. In the ON state, the return spring 36 is operated against the spring force of the return spring 36 at the advanced position where the wires of the return spring 36 contact each other.

  As shown in FIG. 3, a pusher guide 37 is fixed inside the upper heat insulating partition wall 2. The pusher guide 37 has a rectangular tube shape in which each of the front surface and the rear surface is open, and a partition member 38 is fixed inside the pusher guide 37. The partition member 38 has a cross shape formed by combining a horizontal horizontal plate and a vertical vertical plate, and the inner space of the pusher guide 37 is stored in an L pusher storage chamber 39, an R pusher storage chamber 40, and an I pusher storage. It is divided into a chamber 41 and an S pusher storage chamber 42 (see FIG. 10). Each of the L pusher storage chamber 39 to the S pusher storage chamber 42 refers to a space extending in the front-rear direction. The L pusher storage chamber 39 is disposed behind the L door 4 of the refrigeration chamber 3, and the R pusher storage chamber. 40 is arranged behind the R door 5 of the refrigerator compartment 3, the I pusher storage chamber 41 is arranged behind the I slide door 14 of the ice making chamber 13, and the S pusher storage chamber 42 is behind the S slide door 15 of the select chamber. Is arranged.

  An L pusher 43 is inserted into the L pusher storage chamber 39 as shown in FIG. The L pusher 43 is disposed opposite to the rear side of the L door 4 of the refrigerator compartment 3, and the L pusher 43 is operated to press the L door 4 forward when the L door 4 is closed, and the L pusher 43 is closed when the L door 4 is closed. The reciprocating positions separated from the rear surface of the door 4 are linearly movable in the front-rear direction along the wall surface of the L pusher storage chamber 39. An R pusher 44 is inserted into the R pusher storage chamber 40. The R pusher 44 is disposed opposite to the rear side of the R door 5 of the refrigerating chamber 3. The R pusher 44 is disposed so as to press the R door 5 forward in the closed state of the R door 5 and in the closed state of the R door 5. The reciprocating positions separated from the rear surface of the door 5 are linearly movable in the front-rear direction along the wall surface of the R pusher storage chamber 40. Each of the L pusher 43 and the R pusher 44 corresponds to a pusher member.

  As shown in FIG. 3, an I pusher 45 is inserted into the I pusher storage chamber 41. The I pusher 45 is disposed opposite to the rear side of the I slide door 14 in the ice making chamber 13. The I pusher 45 has a pressing position for pressing the I slide door 14 forward in the closed state of the I slide door 14 and the I slide door 14. In the closed state, it can be moved linearly in the front-rear direction along the wall surface of the I pusher storage chamber 41 between the retreat positions separated from the rear surface of the I slide door 14. An S pusher 46 is inserted into the S pusher storage chamber 42 as shown in FIG. The S pusher 46 is disposed opposite to the rear side of the S slide door 15 in the select chamber. The S pusher 46 is pressed to operate the S slide door 15 forward when the S slide door 15 is closed, and the S slide door 15 is closed. In the state, it can be moved linearly in the front-rear direction along the wall surface of the S pusher storage chamber 42 between the retreat positions separated from the rear surface of the S slide door 15. Each of these I pusher 45 and S pusher 46 corresponds to a pusher member.

  As shown in FIG. 3, a cylindrical electromagnet holder 47 whose front and rear surfaces are open is fixed inside the upper heat insulating partition wall 2. The electromagnet holder 47 is made of a nonmagnetic synthetic resin, and the rear end of the plunger 34 is inserted into the electromagnet holder 47. On the inner peripheral surface of the electromagnet holder 47, as shown in FIG. 4, the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 are spaced apart from each other in the circumferential direction so as to surround the plunger 34. Is fixed. Each of the L electromagnets 48 to S electromagnet 51 is constituted by winding a magnet wire around the outer peripheral surface of the iron core, and each tip portion of the L electromagnet 48 to S electromagnet 51 is in a positive direction with respect to the magnet wire. It is magnetized to the N pole based on the current flowing, and is magnetized to the S pole based on the current flowing in the opposite direction to the magnet wire. Each of these L electromagnets 48 to S electromagnet 51 corresponds to an electromagnet, and each of the tip portions of the L electromagnets 48 to S electromagnet 51 refers to a portion facing the plunger 34 from the radial direction.

  As shown in FIG. 3, a permanent magnet 52 is fixed to the plunger 34 at the rear of the flange portion 35. As shown in FIG. 4, the permanent magnet 52 has a base end portion on the plunger 34 side magnetized to an N pole, and a tip end opposite to the plunger 34 magnetized to an S pole. Each of the electromagnets 48 to S electromagnet 51 is set to a length dimension in which the entire tip of the permanent magnet 52 is opposed in the radial direction even when the plunger 34 is operated in either the forward position or the backward position. Yes. The permanent magnet 52 constitutes the first drive source 70 together with the L electromagnet 48 to the S electromagnet 51, and the L door together with the plunger 34 is based on the rotation of the plunger 34 around the axis line CL at the retracted position. It moves in the circumferential direction among the operation position, the R door operation position, the I door operation position, and the S door operation position.

  As shown in FIG. 4, the L door operation position is a position facing the radial direction based on the fact that the permanent magnet 52 is attracted to the L electromagnet 48 by the magnetic attraction force of the L electromagnet 48. The tip of the electromagnet 48 is magnetized to the N pole, and the tips of the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 are magnetized to the S pole. The R door operation position is a position where the permanent magnet 52 is opposed to the R electromagnet 49 from the radial direction based on the attraction of the R electromagnet 49 by the magnetic attractive force of the R electromagnet 49. When the tip portions of the L electromagnet 48, the I electromagnet 50, and the S electromagnet 51 are magnetized to the S pole, the plunger 34 moves to the R door operation position.

  The I door operation position is a position where the permanent magnet 52 is opposed to the I electromagnet 50 from the radial direction based on the attraction of the I electromagnet 50 by the magnetic attraction force. When the tip portions of the L electromagnet 48, the R electromagnet 49, and the S electromagnet 51 are magnetized to the S pole, the plunger 34 moves to the I door operation position. The S door operation position is a position where the permanent magnet 52 is opposed to the S electromagnet 51 from the radial direction based on the attraction of the S electromagnet 51 by the magnetic attractive force of the S electromagnet 51. When the tip portions of the L electromagnet 48, the R electromagnet 49, and the I electromagnet 50 are magnetized to the S pole, the plunger 34 moves to the S door operation position.

  Each of the L pusher 43, the R pusher 44, the I pusher 45, and the S pusher 46 is formed with a projecting spring receiver 53, and the spring receiver 53 to the S pusher 46 of the L pusher 43 are formed. A common support plate 54 is disposed in front of each of the spring receivers 53 so as to face each other. The support plate 54 is fixed to the front end portion of the partition member 38, and a pusher spring 55 is interposed between the spring receiver 53 of the L pusher 43 and the support plate 54, and the spring receiver 53 and the support of the R pusher 44. A pusher spring 55 is interposed between the plates 54, a pusher spring 55 is interposed between the spring receiver 53 of the I pusher 45 and the support plate 54, and between the spring receiver 53 of the S pusher 46 and the support plate 54. A pusher spring 55 is interposed. Each of these pusher springs 55 is composed of a compression coil spring, and each of the L pusher 43, the R pusher 44, the I pusher 45, and the S pusher 46 is held at the retracted position by the spring force of the pusher spring 55, and the pusher spring 55 The spring moves from the retracted position to the pressed position against the spring force.

  As shown in FIG. 3, a rod-like extension rod 56 is fixed to the front end portion of the plunger 34 of the door operation solenoid 31. The extension rod 56 has a cylindrical shape concentric with the plunger 34, moves linearly in the front-rear direction between the retracted position and the advanced position together with the plunger 34, and rotates about the axis CL with the plunger 34. . The extension rod 56 corresponds to a movable member, and the axial center line CL of the plunger 34 corresponds to the axis of the extension rod 56. A rod-like connecting rod 57 is fixed to the front end portion of the extension rod 56. The connecting rod 57 extends in the radial direction around the extension rod 56, and a rod-like push rod 58 is fixed to the tip of the connecting rod 57. The push rod 58 has a cylindrical shape that extends linearly in the front-rear direction in parallel to the extension rod 56, and is based on the extension rod 56 rotating around the axis line CL at the retracted position of the plunger 34. Then, it moves in the circumferential direction so as to face each of the L pusher 43 to S pusher 46 from the rear. The push rod 58 corresponds to an operation member.

  A push head 59 is fixed to the front end of the push rod 58 as shown in FIG. The push head 59 has a cylindrical shape having a diameter larger than that of the pusher rod 58, and the permanent magnet 52 moves to the L door operation position when the plunger 34 is retracted. The permanent magnet 52 faces the rear surface of the R pusher 44 through the gap when the permanent magnet 52 moves to the R door operation position when the plunger 34 moves backward, and the permanent magnet 52 moves at the backward position of the plunger 34. Is moved to the I-door operation position and faces the rear surface of the I pusher 45 through a gap, and the permanent magnet 52 moves to the S-door operation position when the plunger 34 is moved backward. It faces the rear surface through a gap.

  The solenoid coil 33 of the door operation solenoid 31 is connected to a solenoid drive circuit 60 as shown in FIG. The solenoid drive circuit 60 applies a DC drive power to the solenoid coil 33 and is connected to a control circuit 61 mainly composed of a microcomputer. The control circuit 61 includes a CPU, a ROM, and a RAM, and moves the plunger 34 of the door operation solenoid 31 between the backward position and the forward position based on driving control of the solenoid drive circuit 60.

  As shown in FIG. 5, an L electromagnet drive circuit 62 and an R electromagnet drive circuit 63 are connected to the control circuit 61. The L electromagnet drive circuit 62 is a DC drive power supply for magnetizing the tip of the L electromagnet 48 to the N pole on the magnet wire of the L electromagnet 48 and a DC drive power supply for magnetizing the tip of the L electromagnet 48 to the S pole. The control circuit 61 magnetizes the tip portion of the L electromagnet 48 to each of the N pole and the S pole based on the drive control of the L electromagnet drive circuit 62. The R electromagnet drive circuit 63 is a DC drive power source for magnetizing the tip of the R electromagnet 49 to the N pole on the magnet wire of the R electromagnet 49 and a DC drive power source for magnetizing the tip of the R electromagnet 49 to the S pole. The control circuit 61 magnetizes the tip portion of the R electromagnet 49 to each of the N pole and the S pole based on the drive control of the R electromagnet drive circuit 63.

  As shown in FIG. 5, an I electromagnet drive circuit 64 and an S electromagnet drive circuit 65 are connected to the control circuit 61. The I electromagnet drive circuit 64 is a DC drive power source for magnetizing the tip of the I electromagnet 50 to the N pole on the magnet wire of the I electromagnet 50 and a DC drive power source for magnetizing the tip of the I electromagnet 50 to the S pole. The control circuit 61 magnetizes the tip portion of the I electromagnet 50 to each of the N pole and the S pole based on driving control of the I electromagnet drive circuit 64. The S electromagnet drive circuit 65 is a DC drive power supply for magnetizing the tip of the S electromagnet 51 to the N pole on the magnet wire of the S electromagnet 51 and a DC drive power supply for magnetizing the tip of the S electromagnet 51 to the S pole. The control circuit 61 magnetizes the tip portion of the S electromagnet 51 to each of the N pole and the S pole based on driving control of the S electromagnet drive circuit 65. The control circuit 61 corresponds to each of the first drive control means and the second drive control means.

  As shown in FIG. 5, an L door opening switch 66 and an R door opening switch 67 are connected to the control circuit 61. The L door opening switch 66 is composed of a Hall IC which is housed in the upper heat insulating partition wall 2 so as to be located behind the permanent magnet of the L door button 10. It is turned off without receiving a magnetic force, and is turned on in response to the magnetic force from the permanent magnet based on the operation of the L door button 10 from the initial position to the pushing position. The R door opening switch 67 is composed of a Hall IC housed in the upper heat insulating partition wall 2 so as to be located behind the permanent magnet of the R door button 11, and from the permanent magnet at the initial position of the R door button 11. It is turned off without receiving a magnetic force, and is turned on in response to the magnetic force from the permanent magnet based on the operation of the R door button 11 from the initial position to the pushing position.

  As shown in FIG. 5, an I door opening switch 68 and an S door opening switch 69 are connected to the control circuit 61. The I door opening switch 68 is composed of a Hall IC which is housed in the upper heat insulating partition wall 2 so as to be located behind the permanent magnet of the I door button 18. It is turned off without receiving a magnetic force, and turned on in response to the magnetic force from the permanent magnet based on the operation of the I-door button 18 from the initial position to the pushed-in position. The S door opening switch 69 is composed of a Hall IC which is housed in the upper heat insulating partition wall 2 so as to be located behind the permanent magnet of the S door button 19. It is turned off without receiving magnetic force, and is turned on in response to the magnetic force from the permanent magnet based on the operation of the S door button 19 from the initial position to the pushing position.

  A control program is recorded in the ROM of the control circuit 61, and the CPU of the control circuit 61 drives the door operation solenoid 31, the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 based on the control program. By controlling, each of the L door 4, the R door 5, the I slide door 14, and the S slide door 15 is operated forward from the open state. Hereinafter, the processing content of the CPU of the control circuit 61 will be described based on the flowchart of FIG. The CPU determines whether or not the L door opening switch 66 is turned on in step S1, determines whether or not the R door opening switch 67 is turned on in step S5, and whether or not the I door opening switch 68 is turned on in step S9. It is determined whether or not the S door opening switch 69 is turned on in step S13.

  When the CPU determines that the L door opening switch 66 is turned on in step S1, the CPU proceeds to electromagnet energization start processing L in step S2. Here, the tip of the L electromagnet 48 is magnetized to the N pole based on the drive control of the L electromagnet drive circuit 62, and the tip of the R electromagnet 49 is set to the S pole based on the drive control of the R electromagnet drive circuit 63. And the tip of the S electromagnet 51 is magnetized based on the drive control of the S electromagnet drive circuit 65, based on the drive control of the I electromagnet drive circuit 64. Magnetized in the south pole. In a state where each of the L electromagnet 48 to the S electromagnet 51 is magnetized, a magnetic repulsive force is generated from the tip of the R electromagnet 49, the tip of the I electromagnet 50, and the tip of the S electromagnet 51 to the tip of the permanent magnet 52. Since the magnetic attractive force acts from the tip of the L electromagnet 48 to the tip of the permanent magnet 52, the tip of the permanent magnet 52 exerts a magnetic repulsive force when the permanent magnet 52 is not operated to the L door operation position. Based on the reception, it moves in the circumferential direction from the current position together with the plunger 34 of the door operation solenoid 31.

  When the CPU magnetizes each of the L electromagnets 48 to 51 in step S2, the CPU resets the timer T1 of the RAM to “0” in step S3. The timer T1 is measured based on the fact that the CPU starts timer interrupt processing at regular time intervals and adds a unit value in the timer interrupt processing. When the CPU resets the timer T1 in step S3, the CPU executes step S4. Then, the addition result of the timer T1 is compared with the movement stop time recorded in advance in the ROM. This movement stop time is set to the maximum required time required from when the tip of the permanent magnet 52 starts to move in the circumferential direction due to the magnetic repulsive force until it stops moving due to the magnetic attraction force. When the permanent magnet 52 stops moving to the L door operation position by the magnetic attractive force of the L electromagnet 48, the CPU determines “T1 = movement stop time” in step S4, and proceeds to step S17.

  In step S17, the CPU starts energizing the solenoid coil 33 of the door operation solenoid 31. The energization of the solenoid coil 33 is performed while the L electromagnet 48 to the S electromagnet 51 are magnetized. The plunger 34 of the door operation solenoid 31 is energized by the solenoid coil 33 as shown in FIG. Based on the start, the permanent magnet 52 moves forward from the retracted position while being positioned at the L door operation position by the magnetic attractive force.

  When the CPU starts energizing the solenoid coil 33 in step S17 of FIG. 6, the CPU resets the timer T2 of the RAM to “0” in step S18. The timer T2 is measured based on the fact that the CPU starts timer interrupt processing at regular time intervals and adds a unit value in the timer interrupt processing. When the CPU resets the timer T2 in step S18, the CPU executes step S19. Then, the result of addition of the timer T2 is compared with the advance stop time recorded in advance in the ROM. This forward stop time is set to a time required for the plunger 34 of the door operation solenoid 31 to move from the reverse position to the forward position. When the plunger 34 moves from the reverse position to the forward position, the CPU performs step S19. Then, “T2 = forward stop time” is determined, and energization of the solenoid coil 33 of the door operation solenoid 31 is stopped in step S20. And it transfers to the electromagnet energization stop process of step S21, and each of the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 is deenergized.

  That is, when the user operates the L door button 10 from the initial position to the pushed position while the L door 4 is closed, the plunger 34 of the door operation solenoid 31 moves backward together with the extension rod 56 and the push rod 58 at the L door operation position. Move from position to forward position. Then, since the push head 59 pushes the front L pusher 43 against the spring force of the pusher spring 55 from the retracted position to the pressing position, the L pusher 43 pushes the front L door 4 from the rear to the front. To move forward from the closed state. In this state, when the solenoid coil 33, the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 are disconnected, the plunger 34 is moved by the spring force of the return spring 36 together with the extension rod 56 and the push rod 58, respectively. Returning to the retracted position, the L pusher 43 returns to the retracted position by the spring force of the pusher spring 55.

  When the CPU determines that the R door opening switch 67 is turned on in step S5 of FIG. 6, the CPU proceeds to electromagnet energization start processing R in step S6. Here, the tip of the L electromagnet 48 is magnetized to the S pole based on the drive control of the L electromagnet drive circuit 62, and the tip of the R electromagnet 49 is set to the N pole based on the drive control of the R electromagnet drive circuit 63. And the tip of the S electromagnet 51 is magnetized based on the drive control of the S electromagnet drive circuit 65, based on the drive control of the I electromagnet drive circuit 64. Magnetized in the south pole. In a state where each of the L electromagnet 48 to the S electromagnet 51 is magnetized, a magnetic repulsive force is generated from the tip of the L electromagnet 48, the tip of the I electromagnet 50, and the tip of the S electromagnet 51 to the tip of the permanent magnet 52. Since the magnetic attractive force acts from the tip of the R electromagnet 49 to the tip of the permanent magnet 52, the tip of the permanent magnet 52 exerts a magnetic repulsive force when the permanent magnet 52 is not operated to the R door operation position. In response, it moves from the current position in the circumferential direction.

  When the CPU magnetizes each of the L electromagnet 48 to the S electromagnet 51 in step S6, the timer T1 is reset to “0” in step S7. In step S8, the addition result of the timer T1 is compared with the movement stop time. When the permanent magnet 52 stops moving to the R door operation position by the magnetic attraction force of the R electromagnet 49, "T1 = movement stop time" is set in step S8. Determination is made and the process proceeds to step S17. Here, energization of the solenoid coil 33 of the door operation solenoid 31 is started while the L electromagnets 48 to S are magnetized, and the plunger 34 of the door operation solenoid 31 is moved to the R door operation position as shown in FIG. The movement starts from the retracted position while being positioned by the magnetic attraction force 49.

  That is, when the user operates the R door button 11 from the initial position to the pushed position while the R door 5 is closed, the plunger 34 of the door operation solenoid 31 is magnetically applied to the R door operation position together with the extension rod 56 and the push rod 58. Moves from the reverse position to the forward position while locked. Then, the push head 59 presses the front R pusher 44 from the retracted position to the pressing position against the spring force of the pusher spring 55, so that the R pusher 44 presses the front R door 5 from the rear to the front. To move forward from the closed state.

  When the CPU determines that the I door opening switch 68 is turned on in step S9 in FIG. 6, the CPU proceeds to electromagnet energization start processing I in step S10. Here, the tip of the L electromagnet 48 is magnetized to the S pole based on the drive control of the L electromagnet drive circuit 62, and the tip of the R electromagnet 49 is set to the S pole based on the drive control of the R electromagnet drive circuit 63. And the tip of the S electromagnet 51 is magnetized based on the drive control of the S electromagnet drive circuit 65. Magnetized in the south pole. In a state where each of the L electromagnet 48 to the S electromagnet 51 is magnetized, a magnetic repulsive force is generated from the tip of the L electromagnet 48, the tip of the R electromagnet 49, and the tip of the S electromagnet 51 to the tip of the permanent magnet 52. Since the magnetic attractive force acts from the tip of the I electromagnet 50 to the tip of the permanent magnet 52, the tip of the permanent magnet 52 exerts a magnetic repulsive force when the permanent magnet 52 is not operated to the I door operation position. In response, it moves from the current position in the circumferential direction.

  When the CPU magnetizes each of the L electromagnet 48 to the S electromagnet 51 in step S10, the timer T1 is reset to “0” in step S11. In step S12, the addition result of the timer T1 is compared with the movement stop time. When the permanent magnet 52 stops moving to the I door operation position by the magnetic attractive force of the I electromagnet 50, "T1 = movement stop time" is set in step S12. Determination is made and the process proceeds to step S17. Here, energization of the solenoid coil 33 of the door operation solenoid 31 is started while the L electromagnet 48 to the S electromagnet 51 are magnetized, and the plunger 34 of the door operation solenoid 31 is moved to the magnetic attraction force of the I electromagnet 50 as shown in FIG. Thus, the movement starts from the retracted position to the front while being magnetically locked to the I-door operation position.

  That is, when the user operates the I door button 18 from the initial position to the pushed position while the I slide door 14 is closed, the plunger 34 of the door operation solenoid 31 moves to the I door operation position together with the extension rod 56 and the push rod 58. It moves from the retracted position to the advanced position while being locked by the magnetic force. Then, the push head 59 pushes the front I pusher 45 from the retracted position to the pressed position against the spring force of the pusher spring 55, so that the I pusher 45 turns the front I slide door 14 forward and backward. Based on the pressing, it operates forward from the closed state.

  When the CPU determines that the S door opening switch 69 is turned on in step S13 of FIG. 6, the CPU proceeds to electromagnet energization start processing S in step S14. Here, the tip of the L electromagnet 48 is magnetized to the S pole based on the drive control of the L electromagnet drive circuit 62, and the tip of the R electromagnet 49 is set to the S pole based on the drive control of the R electromagnet drive circuit 63. And the tip of the S electromagnet 51 is magnetized based on the drive control of the S electromagnet drive circuit 65, based on the drive control of the I electromagnet drive circuit 64. Magnetizes to the N pole. In a state where each of the L electromagnet 48 to the S electromagnet 51 is magnetized, a magnetic repulsive force is generated from the tip of the L electromagnet 48, the tip of the R electromagnet 49, and the tip of the I electromagnet 50 to the tip of the permanent magnet 52. Since the magnetic attractive force acts from the tip of the S electromagnet 51 to the tip of the permanent magnet 52, the tip of the permanent magnet 52 exerts a magnetic repulsive force when the permanent magnet 52 is not operated to the S door operation position. In response, it moves from the current position in the circumferential direction.

  When the CPU magnetizes each of the L electromagnets 48 to 51 in step S14, the timer T1 is reset to “0” in step S15. In step S16, the addition result of the timer T1 is compared with the movement stop time. When the permanent magnet 52 stops moving to the S door operation position by the magnetic attractive force of the S electromagnet 51, "T1 = movement stop time" is set in step S16. Determination is made and the process proceeds to step S17. Here, energization of the solenoid coil 33 of the door operation solenoid 31 is started while the L electromagnet 48 to the S electromagnet 51 are magnetized, and the plunger 34 is moved to the S door operation position as shown in FIG. Start moving forward from the retracted position while locked.

  That is, when the user operates the S door button 19 from the initial position to the pushed position while the S slide door 15 is closed, the plunger 34 of the door operation solenoid 31 is moved to the S door operation position together with the extension rod 56 and the push rod 58. It moves from the retracted position to the advanced position while being locked by the magnetic force. Then, the push head 59 pushes the front S pusher 46 from the retracted position to the pressed position against the spring force of the pusher spring 55, so that the S pusher 46 turns the front S slide door 15 forward and backward. Based on the pressing, it operates forward from the closed state.

  When the CPU starts energizing the solenoid coil 33 while magnetically locking the plunger 34 of the door operation solenoid 31 at the R door operation position, I door operation position or S door operation position in step S17 of FIG. 6, the timer T2 is set in step S18. Reset to “0”. Then, the addition result of the timer T2 is compared with the forward stop time in step S19, and when the plunger 34 moves from the reverse position to the forward position, “T2 = advance stop time” is determined in step S19. In this case, energization of the solenoid coil 33 of the door operation solenoid 31 is stopped in step S20, and energization of the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 is stopped in the electromagnet energization stop process of step S21. When the solenoid coil 33, the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 are each de-energized, the plunger 34 is moved backward by the spring force of the return spring 36 together with the extension rod 56 and the push rod 58. The R pusher 44, the I pusher 45, or the S pusher 46 returns to the retracted position by the spring force of the pusher spring 55.

According to the said Example 1, there exists the following effect.
When each of the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 is magnetized at the retracted position of the extension rod 56, the push rod 58 is rotated based on the rotation of the extension rod 56 around the axis line CL. Moving in the circumferential direction, the push head 59 of the push rod 58 faces one of the L pusher 43, the R pusher 44, the I pusher 45, and the S pusher 46 corresponding to the rotational position of the extension rod 56 from the rear. When the door operation solenoid 31 is operated in this state, the push head 59 moves from the retracted position to the advanced position, and one of the L pushers 43 to S pusher 46 in front of the push head 59 is moved from the retracted position by the push head 59. One of the L door 5, the R door 6, the I slide door 14, and the S slide door 15 in front of the push head 59 is pressed forward from the closed state. For this reason, since each of the L door 5 to the S slide door 15 can be alternatively operated forward from the closed state by the common door operation device 30, the door operation device is housed in the cabinet 1 for each door. There is no need. Therefore, it can suppress that the storage space of the cabinet 1 becomes small.

  A push rod is fixed based on the permanent magnet 52 fixed to the plunger 34 of the door operation solenoid 31, and the permanent magnet 52 is attracted to any one of the L electromagnet 48, the R electromagnet 49, the I electromagnet 50, and the S electromagnet 51 with a magnetic attraction force. 58 was rotated to the target position. This eliminates the need for a dedicated motor for rotating the push rod 58 to the target position, thus simplifying the configuration. Moreover, the length of each of the L electromagnets 48 to S electromagnet 51 is set so that the permanent magnet 52 is set to each of the L electromagnets 48 to S electromagnet 51 regardless of whether the plunger 34 is operated to the forward position or the backward position. The push rod is set based on maintaining each of the L electromagnets 48 to S electromagnets 51 in the energized state when the plunger 34 of the door operation solenoid 31 is moved from the retracted position to the advanced position. 58 was locked in the direction of rotation by magnetic force. For this reason, when the plunger 34 moves from the retracted position to the advanced position, the push rod 58 is prevented from being displaced in the circumferential direction based on the rotation of the plunger 34 around the axis line CL. One of the L doors 4 to S sliding doors 15 can be reliably operated forward from the closed state.

  An L door button 10 for operating the L door 4 is attached to the L door 4, an R door button 11 for operating the R door 5 is attached to the R door 5, and I for operating the I slide door 14 The door button 18 is attached to the I slide door 14, and the S door button 19 for operating the S slide door 15 is attached to the S slide door 15. Therefore, when the user operates the L door 4, the L door button 10 is operated without hesitation, when the R door 5 is operated, the R door button 11 is operated without hesitation, and when the I slide door 14 is operated. The I door button 18 can be operated without hesitation, and when the S slide door 15 is operated, the S door button 19 can be operated without hesitation.

  In the first embodiment, when the plunger 34 of the door operation solenoid 31 is moved from the reverse position to the forward position at the L door operation position, only the L electromagnet 48 is applied so that the magnetic attractive force acts from the L electromagnet 48 to the permanent magnet 52. When the plunger 34 of the door operation solenoid 31 is moved from the reverse position to the forward position at the R door operation position, only the R electromagnet 49 is applied so that the magnetic attractive force acts from the R electromagnet 49 to the permanent magnet 52. When the plunger 34 of the door operation solenoid 31 is moved from the reverse position to the forward position at the I door operation position, only the I electromagnet 50 is applied so that the magnetic attractive force acts on the permanent magnet 52 from the I electromagnet 50. Is maintained in the energized state, and the plunger 34 of the door operation solenoid 31 is advanced from the retracted position at the S door operation position. May be maintained only in the energized state S electromagnet 51 to act the magnetic attraction force from the S electromagnet 51 to the permanent magnet 52 when the moving operation to the location.

  In the first embodiment, each of the I slide door 14, the S slide door 15, and the F slide door 23 may be operated from the closed state to the front by the common door operation device 30.

  In the first embodiment, each of the F slide door 23 and the V slide door 24 may be operated from the closed state to the front by the common door operation device 30.

The figure which shows Example 1 (sectional drawing which shows the internal structure of a refrigerator) Figure showing the appearance of the refrigerator The figure which shows a door operation apparatus (a is sectional drawing which follows Xa line, b is sectional drawing which follows Xb line) Sectional view along line X4 in FIG. Block diagram showing electrical configuration Flow chart showing processing contents of control circuit FIG. 3 (a) equivalent view showing the door operating device (showing a state where the L door is operated forward) FIG. 3 (a) equivalent view showing the door operating device (showing a state where the R door is operated forward) FIG. 3 (a) equivalent view showing the door operating device (the figure showing the state where the I-sliding door is operated forward) FIG. 3A is a view corresponding to FIG. 3 (showing a state in which the S-sliding door is operated forward).

Explanation of symbols

  1 is a cabinet, 4 is an L door (door), 5 is an R door (door), 10 is an L door button (operator), 11 is an R door button (operator), 14 is an I slide door (door), 15 Is an S slide door (door), 18 is an I door button (operator), 19 is an S door button (operator), 31 is a door operation solenoid (second drive source), 34 is a plunger, and 43 is an L pusher ( Pusher member), 44 is an R pusher (pusher member), 45 is an I pusher (pusher member), 46 is an S pusher (pusher member), 48 is an L electromagnet (electromagnet), 49 is an R electromagnet (electromagnet), and 50 is I An electromagnet (electromagnet), 51 is an S electromagnet (electromagnet), 52 is a permanent magnet, 56 is an extension rod (movable member), 57 is a connecting rod, 58 is a push rod (operation member), 61 is a control circuit (first drive) control Stage, the second drive control means), 70 indicates a first driving source.

Claims (5)

A box-shaped cabinet with an open front on the user side;
A plurality of doors that are movable between a closed state that closes the front surface of the cabinet and an open state that opens the front surface of the cabinet, the doors being adjacent to each other;
Provided for each of the plurality of doors, a pressing position for pressing the door forward in the closed state of the door, and a rear position compared to the pressing position from the door in the closed state of the door A plurality of pusher members movable between retracted positions separated from each other;
A movable member that is rotatable about an axis extending in the front-rear direction, and is movable between a retracted position and an advanced position ahead of the retracted position;
An operation member that is provided in the movable member and moves in a circumferential direction so as to face each of the plurality of pusher members from the rear based on rotation of the movable member around the axis at the retracted position;
A first drive source that operates to move the operating member in a circumferential direction based on rotating the movable member about the axis at the retracted position;
A second drive source for moving the movable member between the retracted position and the advanced position;
The rotational position of the movable member is controlled based on driving control of the first drive source, and the operation member is one of the plurality of pusher members according to the rotational position of the movable member. First drive control means facing the object from the rear,
The movable member is moved between the retracted position and the forward position based on driving control of the second drive source, and the movable member is moved from the retracted position to the forward position. The pusher member in front of the operation member is pushed from the retracted position to the push position by the operation member, and the door in front of the pusher member is pushed forward from the closed state by the pusher member. A refrigerator comprising second drive control means. Provided at each of the plurality of doors, comprising an operator that can be operated by a user
The first drive control means controls the drive of the first drive source according to the operation content of each of the plurality of operation elements, and controls the operation content of the operation element among the plurality of doors. 2. The refrigerator according to claim 1, wherein the operation member is made to face one of the plurality of pusher members from the rear so that a corresponding one is operated forward from the closed state. The second drive source comprises an electromagnetic solenoid having a plunger that is linearly movable in the front-rear direction and rotatable about an axis extending in the front-rear direction.
The movable member is connected to a plunger of the electromagnetic solenoid, and is moved and operated in the front-rear direction and the rotational direction via the plunger of the electromagnetic solenoid,
The first drive source comprises a permanent magnet provided on a plunger of the electromagnetic solenoid and a plurality of electromagnets provided at intervals in the circumferential direction so as to surround the plunger of the electromagnetic solenoid,
The first drive control means is configured to apply a magnetic attraction force from any one of the plurality of electromagnets to the permanent magnet and a magnetic repulsion force from the remaining electromagnets to the permanent magnet. Each of the electromagnets is driven and controlled, and the rotation position of the movable member is controlled based on the rotation of the plunger to a position where the permanent magnet is attracted to one electromagnet by a magnetic attraction force. The refrigerator according to any one of claims 1 and 2. Each of the plurality of electromagnets is set such that the permanent magnets are opposed to each other in the radial direction even when the movable member is operated at either the forward position or the backward position. ,
The first drive control means energizes each of the electromagnets when the second drive control means moves the movable member from the retracted position to the forward position via the plunger of the electromagnetic solenoid. The refrigerator according to claim 3, wherein the movable member is locked by a magnetic force in the rotation direction based on maintaining the state. The movable member is connected to a plunger of the electromagnetic solenoid and is composed of a rod-like extension rod extending in the front-rear direction,
The operating member is provided with a connecting rod extending in a direction intersecting the moving direction of the extension rod on the extension rod, and is composed of a rod-like push rod extending in the front-rear direction. The refrigerator in any one of Claims 3-4.

Images