JP4861926B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator.

  Conventionally, as a device for opening the door of the refrigerator, a short-distance operation section with a high gear ratio and a long-distance operation section with a low gear ratio are provided, and a large force is generated when the packing is pulled away, and then at a high speed. Open. The structure which provided the overload prevention clutch in the low gear part is disclosed (for example, refer patent document 1).

  Alternatively, a configuration is disclosed in which the pressing member is linearly moved by the worm gear and the rack, the drawer door is pushed out automatically by the pressing member to automatically open, and when the door has been opened, the return spring returns to the retracted position (for example, Patent Document 2).

Japanese Patent Laid-Open No. 02-157581 Japanese Patent Laid-Open No. 2001-280827

  In recent years, eating habits have changed, and daily foods are often purchased from nearby food stores and cooked, and suburban large supermarkets and other foods are purchased in bulk for about a week. The number of households is increasing. Furthermore, in response to situations such as an increase in the use of frozen foods, refrigerators with a capacity of more than 400 liters with a large freezer capacity are becoming average.

  However, the amount of food stored with the increase in size of the refrigerator is increasing, and in particular, the weight stored in the freezer compartment or vegetable compartment is increasing. For example, since foods of 20 kg or more are stored, there is a problem that the force necessary to open the doors of the vegetable compartment and the freezer compartment increases.

  In particular, at the beginning of the door opening, in addition to the load resistance of the drawer rail, a force for separating the magnet packing adsorbed on the refrigerator main body is applied, and the force necessary to open the door increases. For this reason, it has become a big burden at the time of opening a refrigerator for small people, such as an elderly person and a child.

  Further, in the refrigerator, when the door is not closed enough, when the so-called half-door is opened, the cold air leaks outside the refrigerator and the refrigeration function is lost. In this case, electricity consumption increases and the stored food deteriorates. Furthermore, there is a problem that warm outside air outside the refrigerator enters the refrigerator and water droplets are condensed in the refrigerator.

  In the refrigerator door, a magnet adsorption type packing is provided over the entire circumference of the door, and when the door is closed, the door is adsorbed and held around the opening of the main body by the magnetic force of the magnet. Also, when closing the door, it is common to have a closer mechanism that uses the force of the door itself, such as gravity or spring, when it is closed to the fully closed state, for example, when the opening amount is about 50 mm. is there.

  For this reason, when opening the door of the refrigerator, at the start of opening, the adsorption force by the magnet packing, the pulling force of the closer mechanism, and the force necessary to draw out the weight of the food in the storage container provided on the door , The power exceeding the total power of is required. That is, it is necessary to apply a force necessary to pull the entire drawer from the stopped state to open the door, for example, at a speed of about 200 mm per second, so that the door is pulled particularly when a large amount of food is stored. The opening force is the greatest first force. After opening the door about 10mm, the magnet packing is separated from the main body, so the force to open the door is the sum of the pulling force by the spring of the closer mechanism and the acceleration force to accelerate the pulling out. It becomes the power of. If the range in which the pulling force in the closing direction by the closer mechanism is applied is, for example, 50 mm from the closed state of the door, the second force is required in that range. Furthermore, after the opening operation is continued and the door opens more than 50mm, the closer mechanism no longer works, so the force applied to the drawer is only the acceleration force and the frictional force generated by the door frame to slide the drawer. The third force, which is a slight force, is sufficient to open the drawer. Here, if the drawer reaches the opening speed when it is opened about 50 mm, the third force is sufficient only to resist the frictional force generated by the door frame. It is sufficient to perform the opening operation with a slight third force.

  When opening the drawer of the refrigerator, as described above, a particularly large force is required at the beginning of opening, and a slight force is sufficient after the opening, for example, about 50 mm. In this invention, the refrigerator drawer door drive device suitable for the force required when pulling out the drawer door of the above refrigerators is provided.

  On the other hand, regarding the speed of the door during the opening operation, since the movement starts from the stop state at the time when the magnet packing is pulled away, the speed may be very small in that range, that is, the first force range. On the other hand, when the drawer door continues to open to the range of the second and third forces, if the door speed is accelerated to increase the speed, the action when the user pulls the drawer door by hand Therefore, it is suitable for natural operation. The present invention further provides a refrigerator drawer door driving device adapted to the speed characteristics when the drawer door of the refrigerator is pulled out as described above.

  In addition, as will be described later, the storage capacity and the container depth of the container that stores the stored food become shallow in the conventional door driving device, as will be described later, due to the configuration of the door driving device itself.

  Here, in Patent Document 1, a short stroke door pushing means and a long stroke door pushing means are necessary, and the configuration is complicated. Moreover, since the said door pushing-out means is provided in the side part of the vegetable storage box B in a refrigerator warehouse, the storage capacity of the said vegetable storage box B will reduce by the volume of this door extrusion means.

  Patent Document 2 discloses a configuration using a worm and a rack, but the operation speed of the rack, which is the speed at which the drawer door is opened, is a constant configuration, so that the force necessary to push out the magnet packing is output. Therefore, the reduction ratio needs to be large (that is, the speed is low) to be constant. Therefore, the operation speed is slow, and further, there is no function for closing the door. Moreover, since the unit case which accommodates a motor unit is installed in the container bottom part, the container depth of a storage container will become shallow by that much.

  An object of this invention is to provide the refrigerator which can open a door with small force, or to provide the refrigerator which can improve a storage volume.

  The refrigerator of the present invention described in claim 1 is a refrigerator including a door driving device that opens a door of the refrigerator, wherein the door driving device includes a rotation driving unit provided in a refrigerator main body, and the rotation driving unit. A rotating member provided with a plurality of power transmission portions at positions such that the distance from the rotation center becomes longer as it rotates and rotates in the direction opposite to the rotation direction; and a control unit that controls the rotation driving unit; A connecting member that is provided on the door side and receives power from the power transmission unit and converts the rotational motion of the rotary member into a linear motion, the power transmission unit includes a flat surface portion, and the flat surface of the flat surface portion. The connecting member has a plurality of stepped step portions, and the step portion and the flat portion are in contact with each other and power is transmitted. To open the door. Characterized in that it.

  With this configuration, the driving force of the rotating member can be efficiently transmitted to the connecting member, and the refrigerator door can be opened with a small force.

  A refrigerator according to a second aspect of the present invention is the refrigerator according to the first aspect, wherein the door is a drawer-type door, and the drawer door includes a door, door frames provided on the left and right of the door, and left and right doors. It has the member formed ranging over this door frame, It has the said connection member in this member, It is characterized by the above-mentioned.

  With this configuration, since the connecting member is provided on the member formed across the door frame, the driving force of the rotating member can be steadily and efficiently transmitted to the drawer door.

  A refrigerator according to a third aspect of the present invention is the refrigerator according to the second aspect, wherein the member is formed in a U shape when viewed from the front of the door.

  With this configuration, since the members are arranged in a U shape on the side surface of the drawer container, the drawer container can be used effectively.

  A refrigerator according to a fourth aspect of the present invention is the refrigerator according to the first aspect, wherein the door is a drawer-type door, and the drawer door includes a door and door frames provided on the left and right sides of the door. A drawer container is placed on the door frame, and the connecting member is formed integrally with or separate from the drawer container.

  According to this configuration, the rotational force of the rotating member can be transmitted to the connecting member even if the connecting member is integrated with or separate from the drawer container, and the drawer container can be easily pulled out.

  The refrigerator of the present invention described in claim 5 is a refrigerator provided with a drawer door that can be pulled out in the front-rear direction, and is rotated by the rotation driving means fixed to the refrigerator main body and the rotation driving means. A rotating member provided with a plurality of power transmission units at positions where the distance from the rotation center is gradually changed toward the center, a control unit for controlling the rotation driving unit, and the power transmitted from the power transmission unit A connecting member that converts the rotational motion of the rotating member into a linear motion, and the drawer door is a door, a door frame provided on the left and right of the door, and a member formed across the door frame on the left and right The connecting member is provided on the member, and a portion to which power is transmitted from the power transmission unit is positioned outside the outer periphery of the member.

  With this configuration, the portion to which the power of the connecting member is transmitted is positioned outside the outer periphery of the member, so that the member is placed closer to the refrigerator inner wall than when positioned inside the outer periphery of the member. You can get closer. For this reason, the volume of the drawer container can be increased correspondingly.

  A refrigerator according to a sixth aspect of the present invention is the refrigerator according to the fifth aspect, wherein the member is formed in a U shape when viewed from the front of the door.

  With this configuration, the U-shaped bottom can be brought closer to the refrigerator inner wall side, and the volume of the drawer container can be increased accordingly.

  A refrigerator according to a seventh aspect of the present invention is the refrigerator according to the fifth aspect, wherein the drawer door includes a door and door frames provided on the left and right sides of the door, and a drawer container is placed on the door frame. The connecting member is formed integrally with or separately from the drawer container.

  According to this configuration, the rotational force of the rotating member can be transmitted to the connecting member even if the connecting member is integrated with or separate from the drawer container, and the drawer container can be easily pulled out.

  The refrigerator of the present invention described in claim 8 is characterized in that, in claim 5, the drawer door is closed by rotating the rotation driving means in a direction opposite to the opening of the drawer door. To do.

  With this configuration, the drawer door can be closed by the rotation driving means in a so-called half door state.

  ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which can open a door with small force can be provided. Or the refrigerator which can improve a storage capacity can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

  A first embodiment of the present invention will be described below with reference to FIGS.

(Overall configuration of refrigerator)
FIG. 1 is a perspective view showing the structure of a refrigerator according to the present invention, and FIG.

  In FIG. 1 and FIG. 2, the refrigerator main body 1 is divided into a plurality of storage rooms, the uppermost part is a refrigerating room 2, and the door thereof is a refrigerating room that is a double door of a kannon type that opens to the left and right sides as an example. It is a door 2a. The lower side of the refrigerator compartment 2 is a storage room divided into left and right, for example, one of which is a function switching room 3, and the other is an accumulator for taking out ice produced by an automatic ice making device (not shown). It is an ice making room 4.

  Further, the lower part is a freezer compartment 5 provided with a freezer compartment door 5a which is a drawer door which can be pulled out and opened to the front, and the bottom stage is a vegetable compartment 6 provided with a vegetable compartment door 6a which is a drawer door. It is the composition which is.

  Here, the freezer compartment 5 and the vegetable compartment 6 are provided with a freezer compartment door 5 a and a vegetable compartment door 6 a that can be pulled back and forth, and the freezer compartment door 5 a of at least one of the freezer compartment 5 or the vegetable compartment 6. The vegetable compartment door 6a is configured to be electrically opened as will be described later.

  The freezer compartment door 5a and the vegetable compartment door 6a are configured to be pulled out electrically. The freezer compartment door 5a and the vegetable compartment door 6a that can be pulled out electrically are operated by operating the push buttons shown in the open switch 8a for the freezer compartment door and the open switch 8b for the vegetable compartment door, so that a conventional manually opened drawer door is opened. It can be opened with about 1/10 of the force. In the embodiment, in a state where 25 kg is stored in the freezer compartment, the force with which the conventional manual pull-out is about 40 Newton is about 4 Newton. This makes it easy to open with one hand even in a heavy state where vegetables are full, in a freezer room with a large capacity of about 170 L, or in a vegetable room that is placed under the freezer room and has a posture that makes it difficult to apply force when opening the door. it can.

  Thus, it was set as the refrigerator provided with the drawer door of the electric freezer compartment 5 and the vegetable compartment 6 which can be opened easily with one hand, and the refrigerator compartment door 2a opened on both right and left sides of the refrigerator compartment 2 which can be opened with the said small force. Thus, even a large refrigerator can open all doors without requiring a large force. As a result, all doors can be easily opened and closed even by children, the elderly, and other people who do not have great power. In addition, since it can be opened with a small force, it can be easily opened without dropping the baggage or with a reaction force when opening and closing the baggage with the bag in hand or sitting in a wheelchair.

  Further, the refrigerator room 2, a freezer room 5 provided below the refrigerator room 2, and a vegetable room 6 provided below the freezer room 5, the freezer room 5 and the vegetable room 6 include A freezer compartment door 5a and a vegetable compartment door 6a that can be pulled back and forth are provided, and the freezer compartment door 5a of the freezer compartment 5 is configured to be electrically opened as described later. The freezer compartment 5 is provided in the middle of the refrigerator, and it is a frequently used freezer compartment. However, the drawer door automatically overcomes the suction force of the freezer compartment door 5a due to the cooling of the internal space and the magnetizing force by the seal packing. It is necessary to pull out. Ease of use is improved by pulling out the drawer door electrically.

  Further, the freezer compartment is arranged in the middle of the refrigerator, so that the freezer compartment at a low temperature, for example −20 degrees, is not adjacent to the machine room 52 where the compressor is arranged and is at a high temperature, for example 50 ° C. Adjacent to the cooler chamber (not shown) at a low temperature, for example, −40 ° C., the temperature difference with the adjacent chamber is reduced, thereby reducing the thickness dimension of the heat insulating wall between the adjacent chambers. I can do it. Similarly, the temperature difference in the vegetable room was reduced, and the insulation between adjacent machine rooms was made thinner.

  In the above-described configuration, a cooler is provided behind the freezer compartment 5. Thereby, since the temperature difference between the freezer compartment and the cooler can be small, the thickness of the heat insulating wall separating the freezer compartment and the cooler chamber can be reduced compared to the case where there is a cooler on the back side of the vegetable compartment, It becomes possible to enlarge the internal volume of the freezer compartment 5 more. Here, the internal volume is a rated internal volume defined by JIS. For this reason, more force is required when pulling out the freezer compartment 5, but ease of use can be improved by adopting a configuration that can be pulled out electrically.

  In addition, the refrigerator compartment door is provided with an operation display unit 7, which includes a freezer compartment door open switch 8 a and a vegetable compartment door open switch 8 b, and the user presses the switch to open the drawer. It is the structure which can instruct | indicate operation | movement. Here, when the freezer compartment 5 is provided above the vegetable compartment 6, an open switch 8a for the freezer compartment door is provided above the open switch 8b for the vegetable compartment door, and is provided similarly to the positional relationship of the doors. This is preferable because it is easy to understand which open switch 8 should be operated when the user operates.

(Implementation of opening and closing mechanism (1))
Hereinafter, the door driving device will be described taking the vegetable compartment 6 as an example. The same applies to the freezer compartment 5.

  The vegetable compartment door 6a and the container 12 for storing food are supported by a door frame 400 so that they can be pulled out.

  A door driving device 500 is provided inside the vegetable compartment 6. The door driving device 500 is fixed to the refrigerator main body 1 side, and is provided with a driving device 600 on the main body side that includes a motor that is a driving source as a rotational driving means and a speed reduction mechanism that decelerates the rotation of the motor. It is opened and closed together with the door 6a of the chamber 6, and in this embodiment, it is provided with a connecting member 700 provided on a reinforcing member 410 installed so as to connect between the left and right door frames 400, and a driving device 600 on the main body side. It is the structure which opens and closes the vegetable compartment door 6a by applying a force to the connecting member 700 in the moving direction of the door frame 400. Detailed configurations and functions of the driving device 600 and the connecting member 700 on the main body side will be described later.

  In the vegetable compartment 6, it is detected whether or not the vegetable compartment 6 is completely closed (that is, whether or not the vegetable compartment door 6a is in a closed state), and the control means 51 is described later. The first door state detecting means 510 configured to send the signal is provided. As an installation method of the first door state detection unit 510, for example, a magnetic detection sensor 512 constituting the first door state detection unit 510 is provided in the driving device 600 on the main body side, and the magnetic detection sensor 512 is provided. By providing the connecting member 700 with the magnet 521 to be actuated, it is possible to reliably detect whether or not the vegetable compartment 6 is completely closed (that is, whether or not the vegetable compartment door 6a is closed).

  In addition, the vegetable chamber 6 is closed on the upper portion of the vegetable compartment door 6a, or the opening amount of the vegetable compartment door 6a is, for example, a predetermined amount in a half-door state of about 30 mm (a closing drive amount described later). There is provided a second door state detecting means 520 that detects whether or not the opening amount is within 35) and sends a signal to the control means 51 as will be described later.

  As an installation method of the second door state detection means 520, for example, as shown in FIG. 3, a magnetic detection sensor 522 constituting the second door state detection means 520 is provided in the partition portion 1a on the refrigerator main body side. By providing the vegetable compartment door 6a with the magnet 521 for operating the magnetic detection sensor 522, the vegetable compartment 6 is closed, or the vegetable compartment door 6a is opened (35 in FIG. 3), for example, about 30 mm. It can be reliably detected whether or not it is within a predetermined amount of the half door state. Further, if this second door state detection means 520 is also used as a detection means such as a half-door opening warning buzzer, for example, it becomes an advantageous configuration in terms of manufacturing cost.

(Configuration of multi-stage acceleration link)
Next, the configuration of the door drive device 500 including the drive device 600 on the main body side and the connecting member 700 provided on the reinforcing member 410 will be described in detail with reference to FIGS. 4 to 11. Here, the door driving device 500 will be described below as being provided in the vegetable compartment 6, but the same applies to the freezer compartment 5. In addition, about the same structure as FIGS. 1-3 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  FIG. 4 is a plan view showing the configuration of the drawer door driving device in the first embodiment of the present invention, FIG. 5 is a perspective view showing the configuration of the connecting member in the first embodiment of the present invention, and FIG. It is a perspective view which shows the structure of the drive transmission member which is a rotation member in 1st Example of this invention.

  4 to 6, reference numeral 400 denotes door frames provided on the left and right sides of the above-described drawer door (vegetable room door 6 a in FIG. 2), and reinforcement installed so as to connect the left and right door frames 400. A member 410 is provided. The reinforcing member 410 is provided with a connecting member 700 which will be described later. This connecting member 700 is connected to the main body side drive device 600 (600 in FIG. 2) attached to the main body side. By receiving this driving force, the drawer door (vegetable compartment door 6a in FIG. 2) is automatically opened and closed.

  In the drive device 600 (600 in FIG. 2) on the main body side, a drive transmission member 640 that is a rotary member that is a rotary drive body is rotatably supported around a drive shaft 620 that is a rotary output shaft, The drive transmission member 640 has a plurality of positions arranged at positions where the distance from the rotation center is gradually changed toward the rotation direction so that the drawer door (vegetable room door 6a in FIG. 2) can be opened. An opening pusher 660 is provided. That is, when the door is opened due to the rotation of the motor, the opening pusher 660 which is a plurality of power transmission parts is located at a position where the distance from the center of rotation increases as it goes in the direction opposite to the rotation direction. Is provided.

  The door opening pusher 660 includes, for example, eight pushers, and according to the distance from the drive shaft 620, the first pusher 661 at a distance r1, the second pusher 662 at a distance r2, A third pusher 663 at a distance r3, a fourth pusher 664 at a distance r4, a fifth pusher 665 at a distance r5, a sixth pusher 666 at a distance r6, a seventh pusher 667 at a distance r7, Eighth pushing portions 668 are provided at a distance r8, each pushing portion has flat portions 661 to 668 that are planar, and is substantially part of the radiation from the drive shaft 620. That is, the plane direction of the substantially planar portion is formed so as to be substantially the rotation center direction. Here, it is assumed that r1 <r2 <r3 <r4 <r5 <r6 <r7 <r8.

  Further, the drive transmission member 640 is provided with a door closing push portion 670 so that the drawer door (the vegetable compartment door 6a in FIG. 2) can be closed.

  In order to simplify the configuration of the connecting member 700 described later, the distance r9 from the rotation center of the door closing push portion 670 is the farthest from the rotation center among the plurality of door opening push portions 660 described above. The pushing portion, for example, the eighth pushing portion 668 is set at substantially the same distance.

  The connecting member 700 includes a connecting member locking portion 710 for fixing to the reinforcing member 410 and a connecting member configured to open and close the drawer door (vegetable compartment door 6a in FIG. 2). The opening part 730 and the closing part 720 of the connecting member are formed integrally or separately as described later in FIG.

  And in the opening part 730 of this connection member, the planar shape which is the several step-like step part arrange | positioned in the position corresponding to the several opening push part 660 arrange | positioned at the drive transmission member 640 mentioned above. By providing a pressing surface (for example, an eight-step surface from the first pressing surface of 731 to the eighth pressing surface of 738), the flat surface portion 661 of the door opening pressing portion 660 by the rotational movement of the drive transmission member 640. 668 and the pushing surfaces 731 to 738 of the connecting member 700 are rotated in the direction of the arrow CCW by transmitting power while making substantially surface contact, and changed to a linear motion of the door opening portion 730 of the connecting member. Thus, the drawer door (vegetable compartment door 6a in FIG. 2) can be opened. Thereby, the driving force of the rotating member can be efficiently transmitted to the connecting member, and the refrigerator door can be opened with a small force.

  Further, the door closing portion 720 of the connecting member is provided with a door closing surface 722 at a position corresponding to the door closing pressing portion 670 provided in the drive transmission member 640 described above, thereby rotating the drive transmission member 640. For example, the drawer door (vegetable compartment door 6a in FIG. 2) is rotated by rotating in the direction of the arrow CW opposite to that when the drawer door is opened to change the linear movement of the door closing portion 720 of the connecting member. ) Can be closed. In other words, when closing the door of the refrigerator, the drive transmission member 640 is provided with a door closing push portion 670 capable of closing the drawer door in a state where the door is not closed enough (half door open state), and the door closing push portion By changing the rotational motion of 670 to the linear motion of the connecting member 700, the drawer door in the half door open state can be closed.

  Note that a space 721 may be provided so that the door closing push portion 670 does not come into contact with the connecting member 700 due to the rotational movement of the door closing push portion 670 of the drive transmission member 640.

  Further, as an example of the rotation detecting means for detecting the origin position 40 (40 in FIG. 10 described later) of the drive transmission member 640, as shown in FIG. 4, a magnet 531 provided on the drive transmission member 640 itself. And a position detection means 530 of the drive transmission member constituted by a magnetic detection sensor 532 configured to detect a magnetic force of the magnet 531 and perform a switching operation. If the magnetic detection sensor 532 is provided in the drive device 600 on the main body side (600 in FIG. 2), the wiring and signal lines of the magnetic detection sensor 532 can be shared with the drive device 600 on the main body side. This is an advantageous configuration in the manufacturing process.

  Next, FIG. 7 will be described.

  FIG. 7 is a perspective view showing the configuration of the drive device 600 on the main body side in the first embodiment of the present invention, and is an explanatory view seen through the inside of the drive device case 610 for the sake of simplicity. In addition, about the same structure as FIGS. 1-3 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the figure, a motor pinion 25 is provided on the rotating shaft of the motor 24 and meshes with an idler 26 to be decelerated. The idler 26 and the idler pinion 27 rotate as a unit, and the idler pinion 27 meshes with the idler 28. The idler 28 and the idler pinion 29 rotate as a unit, and the idler pinion 29 meshes with the drive gear 30 and is decelerated. The drive shaft 620 and the drive gear 30 are connected to each other, and the rotational speed of the motor 24 is reduced to, for example, about 1/100 by such a gear configuration, and the drive transmission member 640 provided on the drive shaft 620 is rotated. . In this embodiment, torque limiting means 31 is provided between the idler 28 and the idler pinion 29, and when an excessive external force is applied to the drive transmission member 640, the torque limiting means 31 is interposed between the idler 28 and the idler 28. The sliding of the idler pinion 29 with each other can prevent the drive device 600 on the main body side from being damaged.

  As an example of the rotation detection means, for example, the rotation detection means 32 is provided on the drive shaft 620 so that the rotation position of the drive shaft 620 can be detected. An example of such rotation detection means 32 is a variable resistor whose resistance value changes with the rotation of the shaft. As another example of the rotation detection means, the position detection means 530 of the drive transmission member constituted by the magnet 531 shown in FIG. 4 and the magnetic detection sensor 532 that detects the magnetic force of the magnet 531 and performs a switching operation. There is.

  Next, the height positional relationship between the reinforcing member 410 and the connecting member 700 will be described with reference to FIG. FIG. 8 is a cross-sectional explanatory view of the main part taken along the line AA in FIG. In addition, about the same structure as FIGS. 1-7 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the drawing, the connecting member 700 includes a connecting member locking portion 710 for fixing to the reinforcing member 410, a connecting member opening portion 730 configured to open and close the drawer door, and a connecting member closing portion 720. Are formed integrally or separately.

  Then, the engaging portion 710 of the connecting member abuts on the lower surface of the reinforcing member 410, so that the height portion of the connecting member 700 itself can be held at a predetermined position, and the reinforcing member 410. And a pinching portion 712 formed so that the depth dimension of the connecting member 700 can be held at a predetermined position by being pinched, and can be removed from the reinforcing member 410 by a locking tool 713 such as a screw, for example. It is fixed to.

  Then, the thickness h12 dimension of the locking portion 710 of the connecting member is set according to the aforementioned “maximum first force for opening the drawer door from the stopped state” and the height h11 dimension of the reinforcing member 410. For example, the reinforcing member 410 is formed of a steel plate having a thickness of 0.8, the height h11 is assumed to be about 4 to 10 mm, and the engaging portion 710 of the connecting member is formed of synthetic resin or the like. In this case, the thickness h12 of the engaging portion 710 of the connecting member is set to about 6 to 15 mm. That is, it can be set to a dimension smaller than the dimension of about 12 to 30 mm which is “h1 + h2 + h3” described above in the conventional example of FIG.

  And the thickness h13 dimension of the door closing part 720 of the connecting member and the door opening part 730 of the connecting member is the above-mentioned “maximum first force for opening the drawer door from the stopped state” and the drive transmission member 640. It is set by the engagement dimension h14 of the door opening pushing portion 660 or the door closing pushing portion 670 and the door opening portion 730 of the connecting member or the door closing portion 720 of the connecting member. For example, the connecting member and the drive transmission member are synthesized. When forming with resin etc., it sets to about 5-12 mm or more, for example. That is, it can be set to a dimension smaller than the thickness h12 dimension of the locking portion 710 of the connecting member.

  Therefore, in the present invention, the height position of the closing portion 720 of the connecting member and the opening portion 730 of the connecting member is set to a position at least partially overlapping with the reinforcing member 410 when viewed from the front of the drawer door. By doing so, the reduced depth dimension h15 of the container 12 can be reduced.

  According to the inventors' experiments, simulations, and the like, the reinforcing member 410 described above is formed of, for example, a steel plate having a thickness of 1.2 mm, the height h11 is set to about 3 to 6 mm, and the connecting member 700 itself. Is formed of Duracon resin or the like, the thickness h12 dimension of the engaging portion 710 of the connecting member can be set to about 5 to 8 mm. That is, since it can be set to a dimension equal to or less than the thickness h13 of the connecting member closing door 720 and the connecting member opening 730, the reduced depth dimension h15 of the container 12 can be further reduced. .

  Next, a description will be given with reference to FIG. FIG. 9 is a perspective view showing the configuration of the door frame 400 and the reinforcing member 410 in the first embodiment of the present invention. In addition, about the same structure as FIGS. 1-9 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the figure, the door frame 400 is a door frame provided on the left and right sides of the aforementioned drawer door (vegetable compartment door 6a in FIG. 2), and includes a reinforcing member 410 so as to connect the left and right door frames 400. is there. The reinforcing member 410 is formed in a U-shape when viewed from the front of the drawer door, and includes the connecting member 700 described above at the bottom. And the part of the pushing surfaces 731-738 of the connection member 700 to which motive power is transmitted from the plane parts 661-668 of the door opening pushing part 660 is located outside the outer periphery of the reinforcing member. In other words, it is positioned below the reinforcing member 410. With this configuration, the portion to which the power of the connecting member is transmitted is positioned outside the outer periphery of the member, so that the member is placed closer to the refrigerator inner wall than when positioned inside the outer periphery of the member. You can get closer. For this reason, the volume of the drawer container can be increased correspondingly.

  And the deformation | transformation of the door frame 400 itself when a load is loaded is suppressed by making the position of this reinforcement member 410 into a door side from the center of the depth dimension full length of the said door frame 400 at least. That is, by making the position L12 of the reinforcing member 410 less than or equal to ½ of the total depth L11 of the door frame 400, the deformation due to the load of the door frame 400 is suppressed.

  Therefore, for example, the weight of food stored in the storage container supported by the door frame 400 differs between the left and right of the storage container, and the above-mentioned “maximum first force for opening the drawer door from the stopped state” is left and right. However, since the deformation amount of the elastic deformation of the L12 dimension portion of the door frame 400 is small, the door opening time due to the extrusion of the door mounting surface 401a of the left door frame, for example, as described above with reference to FIG. For example, the momentary deviation from the door opening time due to the extrusion of the door mounting surface 401b of the right door frame can be suppressed small.

  Therefore, the initial stage when the drawer door drive device is driven, for example, the time for separating the magnet packing from the main body is instantaneously shifted from side to side, and the amount of instantaneous vibration of the door itself can be reduced. Occurrence and user discomfort can be reduced.

  If the rear reinforcement 403 is added so as to connect between the left and right door frame rear end portions 402, the above-mentioned “maximum first force for opening the drawer door from the stopped state” is applied to the door frame 400. Even when loaded, the deformation amount of the door frame 400 itself can be reduced.

  Further, the rear end portion 752 of the connecting member 700 is located in front of the rear end portion 402 of the door frame. That is, the dimension L13 in FIG. 9 is set larger than zero. Therefore, in the state shown in FIG. 9, that is, when the left and right door frames 400, the reinforcing member 410, and the connecting member 700 are partially assembled, when handling the partially assembled parts in the manufacturing process, other parts, other equipment, etc. Since the connecting member 700 is difficult to abut, the structure is advantageous in the manufacturing process.

  Further, since the rear end portion 752 of the connecting member 700 is set to be in front of the rear end portion 402 of the door frame, the rear end portion 752 of the connecting member 700 is the rear surface of the inner box of the refrigerator main body. It becomes the structure which does not contact | abut 1c (1c of FIG. 2). Therefore, since the inner box back surface 1c portion can be configured to be substantially planar, the heat insulation thickness of the portion can be ensured.

(Opening operation)
Next, the detail of operation | movement at the time of opening the vegetable compartment door 6a with the door drive device 10 by this invention is demonstrated using FIG. FIG. 10 is a view for explaining the opening operation of the drawer door driving device in the first embodiment of the present invention. In addition, about the same structure as FIGS. 1-9 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the figure, (a) is an origin position, which will be described later, and shows a state where the vegetable compartment 6 is closed. And the operation | movement which opens the vegetable compartment 6 by operating in order of (b) (c) (d) (e) (f) is shown.

  First, the origin position in FIG. In (a), the connecting member 700 illustrated by a solid line is in a position where the left end of the connecting member 700 matches the drawing position 34 and the vegetable compartment door 6a (vegetable compartment door 6a in FIG. 2) is closed. Even if the refrigerator is provided with the door driving device 500 of the present invention, the vegetable compartment door 6a may be pulled out by hand for some reason. Alternatively, when the door driving device 500 does not operate due to a failure, it is desirable that the user can manually open and close it freely. When manually opening and closing in this way, the door driving device 500 desirably has a configuration that does not obstruct a manual operation by the user when opening or closing the vegetable compartment door 6a or a phenomenon such as a heavy operation. .

  If the user manually pulls out and opens the vegetable compartment door 6a from the state in which the vegetable compartment door 6a is closed, the opening portion 730 of the connecting member provided in the vegetable compartment door 6a moves to the left side in the figure, and the broken line It becomes the position. In the position of the broken line, each symbol is indicated by adding '. Here, the drive transmission member 640 is located at the position indicated by the solid line in FIG. 10A, and the illustrated uppermost end 680 of the drive transmission member 640 and the door opening 730 of the connecting member have moved to the left in the figure. Sometimes, there is a gap δ4 between the uppermost end 680 and the illustrated lowermost end 740 of the nearest connecting member, and the uppermost end even if the opening 730 of the connecting member moves to the left in the figure. 680 and the lowermost end portion 740 are not in contact with each other, and between a first pressing portion 661 of a drive transmission member 640 described later and a first pressing surface 731 of the opening portion 730 of the connecting member. In a state where there is a gap δ3 and the vegetable compartment door 6a is closed, if the positional relationship is such that the first pushing portion 661 and the first pushing surface 731 do not contact, the user manually moves the vegetable compartment door 6a. Connecting member 700 and drive transmission when opening and closing Since the member 640 does not contact, the vegetable compartment door 6a can be opened and closed freely.

  Such a position of the drive transmission member 640 is referred to as being at the origin position 40 in the present invention.

  The drive transmission member 640 is rotatable around the drive shaft 620, the opening portion 730 of the connecting member of the connecting member is supported so as to be movable in the horizontal direction in the figure, and the door opening portion 730 of the connecting member. Is provided on the vegetable compartment door 6a side, the movement of the connecting member opening door 730 in the left direction indicates the opening operation of the vegetable compartment door 6a. Here, the reference line which shows the position of the illustration left end of the connection member 700 in the state in which the vegetable compartment door 6a is closed is represented as the drawing-in position.

  Then, when driving is started, as shown in FIG. 10B, the drive transmission member 640 rotates in the direction of the arrow CCW, the first pressing portion 661 comes into contact with the first pressing surface 731, and the connecting member A force in the direction of the arrow 23b is generated on the opening portion 730. At this time, since the first push portion 661 is located at the distance r1 shown in FIG. 4 from the drive shaft 620, the force transmitted from the first push portion 661 to the opening portion 730 of the connecting member is the drive shaft 620. If the torque applied to is T, then T / r1. This force is set to be greater than the resultant force of the force that pulls away the magnet packing of the vegetable compartment door 6a, the pulling force by the closer 13, and the force that accelerates the weight of the vegetable compartment door 6a and the mass of the stored food. Thus, the adsorption of the magnet packing is pulled away, and the opening portion 730 of the connecting member moves in the left direction in the drawing together with the vegetable compartment door 6a, and the vegetable compartment 6 starts to open.

  Further, in the state of FIG. 10C in which the drive transmission member 640 is rotated in the CCW direction, the second pressing portion 662 is in contact with the second pressing surface 732, and the first pressing portion 661 is the first pressing surface 731. Is far from. That is, the second pressing portion 662 is located at the distance r2 shown in FIG. 4 from the drive shaft 620 and r2> r1, and the second pressing portion 662 is more than the first pressing portion 661. Since the distance from the drive shaft 620, which is the center of rotation, is longer, the peripheral speed of rotation is faster. Therefore, after the second pressing portion 662 comes into contact with the second pressing surface 732, the first pressing portion 661 is separated from the first pressing surface 731. In this state, the second pushing portion 662 is in contact with the second pushing surface 732 and applies the force indicated by the arrow 23c. At this time, since the second pushing portion 662 is located at the distance r2 shown in FIG. 4 from the drive shaft 620, the door opening portion 730 of the connecting member is connected from the second pushing portion 662 via the second pushing surface 732. If the torque applied to the drive shaft 620 is T, the force transmitted to is T / r2. Although this force is smaller than the force applied to the opening portion 730 of the connecting member by the first push portion 661 in the direction of the arrow 23b in the state of FIG. 10B, the magnet packing has already been separated, The force applied at this time may be set so as to be larger than the resultant force of the pull-in force by the closer 13, the weight of the vegetable compartment door 6a and the force of further accelerating the mass of the stored food. 730 moves further to the left in the figure together with the vegetable compartment door 6a, and continues the opening operation of the vegetable compartment 6.

  Further, in the state (d) in which the drive transmission member 640 is rotated in the CCW direction, the third pressing portion 663 is in contact with the third pressing surface 733, and the second pressing portion 662 is separated from the second pressing surface 732. Get away. In other words, the third pushing portion 663 is located at the distance r3 shown in FIG. 4 from the drive shaft 620 and r3> r2, and the third pushing portion 663 is more than the second pushing portion 662. Since the distance from the drive shaft 620, which is the center of rotation, is longer, the peripheral speed of rotation is faster. Therefore, after the third pushing portion 663 comes into contact with the third pushing surface 733, the second pushing portion 662 is separated from the second pushing surface 732. In this state, the third pushing portion 663 is in contact with the third pushing surface 733 and applies the force indicated by the arrow 23d. At this time, since the third pushing portion 663 is located at the distance r3 shown in FIG. 4 from the drive shaft 620, the opening 730 of the connecting member is connected from the third pushing portion 663 via the third pushing surface 733. The force transmitted to is T / r3, where T is the torque applied to the drive shaft 620. Although this force is smaller than the force applied to the opening part 730 of the connecting member by the second pushing part 662 in the direction of the arrow 23c in the state of FIG. 10C, the vegetable compartment door 6a has already opened. The vegetable compartment door 6a5 has a momentum according to its own weight and speed including the container and the stored food, and the third moment from the momentum and the third pusher 663 The opening operation can be further continued against the pulling force by the closer 13 by the force transmitted to the pressing surface 733.

  Further, the drive transmission member 640 rotates in the CCW direction, and the fourth pushing portion 664 sequentially contacts the fourth pushing surface 734 in the same manner as described above, and then the fifth pushing portion 665 becomes the fifth pushing surface. 735, and then the sixth pushing portion 666 is in contact with the sixth pushing surface 736, and then the seventh pushing portion 667 is in contact with the seventh pushing surface 737 (state shown in FIG. 10 (e)). Next, when the eighth pushing portion 668 is in contact with the eighth pushing surface 738 (the state shown in FIG. 10F), the opening operation of the vegetable compartment door 6a can be continued.

  Then, after the state of FIG. 10 (f), the drive transmission member 640 shows a state of being substantially separated from the opening portion 730 of the connecting member.

  The range of the movement amount 33 of the connecting member 700 from the state of FIG. 10A to the state of FIG. 10F is within the range where the door opening portion 730 of the connecting member receives a force from the drive transmission member 640. That is a certain opening drive range. Here, it is preferable that the moving amount 33 of the opening portion 730 of the connecting member is set to be larger than the closing urging range which is the retracting amount by the closer 13. That is, if the retracting stroke by the closer which is the closing urging range is 50 mm and the movement amount 33 of the opening portion 730 of the connecting member is 60 mm or more (the position of the connecting member at the position shown in FIG. 10 (f)). This is because the vegetable compartment door 6a that has just been opened by the closer 13 is not closed even when the opening door 730 is stopped, that is, the vegetable compartment door 6a is stopped.

  Further, the movement amount 33 of the opening portion 730 of the connecting member is set to, for example, 1/4 or more of the full opening dimension of the drawer door (vegetable room door 6a in FIG. 2), that is, by the closer 13 described above. If set so as to be larger than the closing urging range that is the amount of pull-in, the vegetable chamber door 6a that has just been opened by the closer 13 is not closed.

  Further, if the drawer door is opened by 1/4 or more of the fully opened dimension, the stored food in the drawer container 12 (container 12 in FIG. 2) can be automatically opened to the extent that it can be understood, so that the convenience of the refrigerator is improved. .

  When the vegetable compartment door 6a is opened more than the state of FIG. 10 (f) and the opening portion 730 of the connecting member moves to the left in the drawing, the opening portion 730 of the connecting member is driven from the drive transmission member 640. The vegetable compartment door 6a has a speed in the direction of the arrow 23f, but it will not open until it is gradually decelerated by the friction load of the door frame 400 (400 in FIG. 2) and stops. Continue operation. Since it operate | moves in this way, the opening amount of the vegetable compartment door 6a becomes larger than the moving amount 33 of the opening part 730 of a connection member.

  As described above, the driving force in the opening direction is not continuously applied during the opening operation of the vegetable compartment door 6a, but the driving force is applied only at the beginning of opening, and thereafter the moving speed obtained in the range of the driving force is the door frame 400. Because it can realize an operation of stopping while gradually decelerating due to the frictional force of, even if the vegetable room door 6a hits when the user is standing just before the door or when an object is placed, the opening direction It is safe because no driving force is applied.

  As described above, when the vegetable compartment door 6a starts to be opened from the closed state, the first push portion 661 disposed closest to the drive shaft 620 pushes and opens the opening portion 730 of the connecting member. The magnet packing is pulled apart by applying a large force at a low speed, but then the second pushing portion 662 provided further away from the first pushing portion 661 pushes out the opening portion 730 of the connecting member. Then, the third push portion 663 sequentially provided farther than the second push portion 662 pushes out the opening portion 730 of the connecting member, and the fourth push provided farther than the third push portion 663. The part 664 pushes out the opening part 730 of the connecting member, and the eighth pushing part 668 provided farther than the seventh pushing part 667 pushes out the opening part 730 of the connecting member, and vegetables Opening movement of the door 6a It is continued. Therefore, although the pushing force gradually decreases, the opening speed of the door can be accelerated sequentially, so that, for example, it can be approximated to the form when the user manually opens the door, thus providing an easy-to-use refrigerator. it can.

  After the vegetable compartment door 6a is opened by the above operation (after FIG. 10 (f)), the drive transmission member 640 further continues to rotate in the CCW direction, and the state of FIG. To stop rotating. Needless to say, in this case, the connecting member 700 is not at the position shown by the solid line in FIG. 10A, and the vegetable compartment door 6a is open, so that it is moved to the left, for example, the position of the broken line. is there.

(Closing action)
When the vegetable compartment door 6a is closed, the vegetable compartment door 6a is not closed until the magnet packing 14 is adsorbed for some reason, and a gap is formed between the magnet packing 14 and the refrigerator main body 1, so-called a half-door state. May be. The operation of the door drive device 500 when the door is in the half door state will be described with reference to FIG.

  FIG. 11 is a view showing an operation when the door driving device 500 according to the present invention closes the vegetable compartment door 6a. FIG. 11A shows that the vegetable compartment door 6a is not closed, and the illustrated left end of the connecting member 700 is retracted. It shows that the position is moved by the opening amount 35 that is the closing drive range in which the closing operation can be performed from the position 34. If the vegetable compartment door 6a is provided with the closer 13, the freezer compartment is usually drawn in and closed by the pulling force generated by the closer 13, but for some reason, a part of the food is caught. There are rare cases where the operation of the door frame 400 becomes temporarily awkward and cannot be pulled in.

  Here, when the drive transmission member 640 is rotated around the drive shaft 620 in the direction of the arrow CW, the door closing push portion 670 of the drive transmission member 640 rotates in the space 721 that constitutes the door closing portion 720 of the connection member and is connected. It abuts on the door closing push surface 722 constituting the door closing portion 720 of the member (FIG. 11B).

  When the drive transmission member 640 is further rotated in the arrow CW direction, the door closing surface 722 is pushed in the direction of the arrow 36 by the door closing pushing portion 670 and moved, so that the illustrated left end of the connecting member 700 is in the retracted position 34. (FIG. 11 (c)).

  The position shown in FIG. 11 (c) indicates that the vegetable compartment door 6 a is in a completely closed position until the magnet packing 14 is attracted to the refrigerator body 1.

  Thereafter, the drive transmission member 640 rotates in the direction of the arrow CCW to the state of FIG. 11D, and rotates to the same origin position 40 as shown in FIG. 10A and stops.

  By operating as described above, even if the vegetable compartment door 6a is not completely closed and is in a so-called half-door state, the drive transmission member 640 is rotated in the opposite direction to the case where the vegetable compartment door 6a is opened. Since it can close by applying the force of the direction which closes the vegetable compartment door 6a with respect to the connection member 700, a half door can be prevented and it is suitable.

  As described above, the force when opening the vegetable compartment door 6a requires a force that is greater than the total of the pulling force by the closer 13 and the pulling force by the closer 13, but when closing, pull the magnet packing 14 apart. Since no force is required and a pull-in force is generated by the closer 13, the closing force applied by the door driving device 500 according to the present invention is sufficient as a weak force compared to the force necessary for opening. According to this embodiment, when closing the vegetable compartment door 6a, the eighth pushing portion 668 that is farthest from the drive shaft 20 and the closing push portion 670 that is substantially the same distance are used to close the closing portion 720 of the connecting member. Even if the driving torque applied to the drive shaft 620 is the same as that at the time of opening, the closing force is preferably smaller by r1 / r9 (see FIG. 4) than the force necessary for opening. In addition, even when a finger or the like is sandwiched between the vegetable compartment door 6a and the refrigerator body 1, the clamping force is small and thus the safety is high.

(Control system configuration)
Next, the configuration of a control system for controlling the door driving device 500 will be described with reference to FIG. FIG. 12 is a block diagram showing a configuration of a control system of the refrigerator door driving device 500 of FIGS. In addition, since the door drive device 500 related to the vegetable compartment door 6a and the door drive device 500 related to the freezer compartment door 5a have the same control system and the same processing flow, the following description will be made on the vegetable compartment door 6a.

  The door opening switch 8 is operated when the user opens the vegetable compartment door 6 a electrically, and sends a signal by the operation to the control means 51. Each motor 24 of the drive device 600 on the main body side provided in the vegetable compartment door 6a, a rotation detecting means 32 for detecting the rotational position of the drive shaft 620, and a first door state detecting means for detecting the open / closed state of the door. 510 and the second door state detection means 520 are connected to the control means 51. The rotation detecting means 32 is constituted by a detecting means such as a variable resistor whose resistance value changes with rotation of the shaft, or a micro switch for detecting a predetermined rotation position of the shaft.

  The door state detection means includes first door state detection means 510 that detects whether or not the vegetable compartment door 6a is completely closed (that is, whether or not the vegetable compartment door 6a is in a closed state), and the vegetable compartment. Second door state detection means 520 for detecting whether or not the opening amount of the door 6a is a predetermined opening amount 35 or less (that is, whether or not the vegetable compartment door 6a is fully opened) is provided. The door state detection means may be, for example, a magnet provided in the vegetable compartment door 6a and a hall element provided in the refrigerator body 1, or may be detection means such as a micro switch.

  An informing means 70 is provided for informing the user that the vegetable compartment door 6a is in a half door state. This notifying means 70 gives notification by sounding a buzzer or lighting or blinking a lamp.

  The timer unit 42 controls the standby time, operation time, and the like in each function relating to the half door state of the vegetable compartment door 6a and the opening and closing of the vegetable compartment door 6a. The timer T1 change switch 92a is for enabling the user to increase or decrease the set value of the duration timer T1 when the vegetable compartment door 6a changes from the fully open state to the half door state. The timer T2 change switch 92b is for enabling the user to increase or decrease the set value of the duration timer T2 when the vegetable compartment door 6a changes from the closed state to the half door state.

  Next, the opening control procedure when the vegetable compartment door 6a is opened will be described with reference to FIG. FIG. 13 is a flowchart showing a procedure of opening control when the vegetable compartment door 6a is opened.

  When the opening operation is started (S001), the control unit 51 monitors the state of the rotation detection unit 32, and the origin position 40 (FIG. 10A) at which the drive transmission member 640 of the drive device 600 on the main body side starts its operation. 40) is detected (S002). Here, the origin position 40 means that the drive transmission member 640 does not interfere with the connecting member 700 even when the vegetable compartment door 6a is manually opened and closed (as described in FIG. 10A). A state in a position.

  If the drive transmission member 640 is not at the origin position 40 in the detection of S002, the motor 24 is energized to rotate the drive transmission member 640 so as to reach the origin position 40 (S003). Whether the motor 24 is rotated in the CW direction or the CCW direction is determined based on a signal from the rotation detection unit 32 in which direction the drive transmission member 640 is displaced with respect to the origin position 40. The means 51 determines and determines the direction in which the drive voltage is applied to the motor 24.

  If it is detected that the drive transmission member 640 is at the origin position 40 and the control means 51 detects that the user has operated the door opening switch 8 (S004), the motor 24 is energized to drive the drive transmission member. 640 is rotated (S005). The rotation direction of the drive transmission member 640 at this time is the arrow CCW direction in FIG. 10, and when the drive transmission member 640 rotates, the vegetable compartment door 6a opens as described in FIG. When it is confirmed that the motor 24 continues to rotate and the rotational position of the drive transmission member 640 detected by the rotation detection means 32 has entered the origin position 40 (S006), the motor is stopped (S007), The opening operation is terminated (S008).

  Next, the control procedure when the vegetable compartment door 6a is closed from the state where the vegetable compartment door 6a is not completely closed (that is, the vegetable compartment door 6a is in a half-door state) will be described with reference to FIG. FIG. 14 is a flowchart showing the procedure of closing control when closing the vegetable compartment door 6a.

  The operation is started (S051), the origin position 40 is detected (S052), and the motor 24 is energized (S053). The operations are the same as S001 to S003 in FIG.

  When the origin position 40 is detected in S052, the first door state detection means 510 detects the closing of the vegetable compartment door 6a (S054). If the vegetable compartment door 6a is detected to be closed by this detection, it can be confirmed that the vegetable compartment door 6a is not in a half door state but is closed, and thus the door closing operation is completed (S055). If the first door state detection means 510 cannot detect the closing of the vegetable compartment door 6a, is the second door state detection means 520 the opening amount of the vegetable compartment door 6a and the refrigerator body 1 being the opening amount 35 or less? Is detected (S056). If the second door state detection means 520 cannot detect the vegetable compartment door 6a in S056, the vegetable compartment door 6a is opened to an opening amount of 35 or more, and therefore cannot be closed by the door driving device 500. In that case, the process ends (S066).

  If it is detected in S056 that the opening amount is 35 or less, the vegetable compartment door 6a is opened with the opening amount 35 or less (that is, the vegetable compartment door 6a is in a half-door state) and is closed by the door driving device 500. Therefore, the motor 24 is energized (S058). The rotation direction at this time is the CW direction in FIG. By energizing the motor 24 in the CW direction for a predetermined time (for example, 3 seconds) (S058, S059), the drive transmission member 640 reaches the state shown in FIG. 6a is closed) and the vegetable compartment door 6a is closed.

  After the predetermined time has elapsed, the motor 24 is energized so as to rotate in the CCW direction (S060), and the drive transmission member 640 is rotated until it reaches the origin position 40 as shown in FIG. When it is detected by the signal from the means 32 that the position is at the origin position 40 (S061), the rotation of the motor 24 is stopped (S062). Next, the first door state detection means 510 detects whether the vegetable compartment door 6a is closed (S063). Here, a process is complete | finished when the vegetable compartment door 6a is completely closed (S066).

  If the first door state detection means 510 cannot detect the closing of the vegetable compartment door 6a in S063, it can be determined that the half door state continues, so the processing from (S058) to (S063), that is, the motor 24. The operation of rotating the drive transmission member 640 in the CW direction to close the vegetable compartment door 6a is repeated a plurality of times (S064). If the closing of the first door state detection means 510 cannot be detected even after repeating this closing operation a predetermined number of times, for example, three times, it is determined that, for example, something is caught and the vegetable compartment door 6a cannot be closed. To end the process.

  Next, manual control when the door is closed will be described with reference to FIG. FIG. 15 is a control flow diagram that starts when the door driving device 500 is fully opened.

  Then, after starting the operation (S100), the origin detection operation is performed (S101). This origin detection operation is the same as S001 to S003 in FIG.

  Next, the control means 51 detects whether the vegetable compartment door 6a has been fully opened from half open (S102, S104). The detection of whether or not the valve has been fully opened is performed in the following order. First, the first door state detection means 510 detects the open state of the vegetable compartment door 6a (that is, the closed state) and the second door state detection means 520 detects the fully open state of the vegetable compartment door 6a ( S102). Since the case where both states are detected here can be confirmed as the fully open state of the vegetable compartment door 6a, in that case, the open state of the vegetable compartment door 6a and the freezer compartment door 5a by the first door state detection means 510 (ie, Detection of the non-closed state) and detection of the half-door state of the vegetable compartment door 6a by the second door state detecting means 520 (closed state of the second door state detecting means 520) are performed (S102). Here, when both states are detected, it can be confirmed that the vegetable compartment door 6a has shifted from the fully open state to the half door state.

  And if it transfers to a half door state from a full open state, the half door state monitoring timer T1 will be started (S105). When the half-door state continues until the half-door state monitoring timer T1 expires (S106, S107), that is, when the motor energization closing operation start condition is satisfied, the notification means 70 is sounded (S108), for a predetermined time, for example, Wait for one second (S109). Even when the finger is sandwiched between the door gap 72 (72 in FIG. 2), the vegetable compartment door 6a, and the refrigerator main body 1 during this waiting time, it is possible to remove the finger after confirming that the notification means 70 has been sounded. It is safe because it can.

  After waiting for a predetermined time in S109, the closing operation by the same motor 24 as shown in (S058) to (S062) of FIG. 14 is performed (S110). For this reason, even when the user does not move the door from the half-open range during the T1 time, the vegetable compartment door 6a can be prevented from being left in the half-door state.

  Since it is comprised as mentioned above, according to this invention, it is possible to reduce the force required in order to open the drawer door of a refrigerator, and to open a door lightly. As a result, for example, pregnant women and elderly people can easily open the doors of the freezer compartment 5 and the vegetable compartment 6 while the elbows and knees are difficult to bend, or the doors are automatically closed from the so-called half-door state to save energy. The refrigerator which can improve can be provided.

  Further, since the door drive device for opening and closing the door is provided, and the height position of the opening portion and the closing portion of the drive device is at least partially overlapped with the reinforcing member when viewed from the front of the drawer door, It is possible to provide a refrigerator in which the storage depth of the stored food storage container installed therein is small.

  When manually opening and closing, the door driving device according to the present invention does not contact the driving device provided in the refrigerator main body with the opening or closing portion provided on the drawer door side. It is easy to use because it does not hinder the user's manual operation or the opening / closing operation becomes heavy, and the user's usability is not impaired in the event of a failure. .

  Moreover, since the opening dimension of the drawer door was set to 1/4 or more of the full opening dimension, the inside of the vegetable room or the freezer can be looked over from the opening when opened.

  Further, since the position of the reinforcing member is set to 1/2 or less of the depth dimension total length L11 of the door frame, the elastic deformation of the door frame becomes smaller than that of the conventional case. Therefore, the initial stage when the drawer door drive device is driven, for example, the time for separating the magnet packing from the main body is instantaneously shifted from side to side, and the amount of instantaneous vibration of the door itself can be reduced. Occurrence and user discomfort can be reduced.

  A first door state detecting means for detecting a closed state of the door; a second door state detecting means for detecting a half door state of the door installed within a range in which the door can be closed by the door opening and closing means; The door driving device closes the door after a predetermined time has elapsed after detecting that both the first door state detecting means and the second state detecting means are open. When you try to close the door manually with a finger or other foreign object in between, if you notice that you are pinching your finger in the door in a half-door state, you can release your finger before the drive means start closing the door It is. Further, since the door can be manually closed while the half-door state of the door continues for a predetermined time, the door can be closed naturally without being pulled by the driving means while the door is being closed. Even if the door is not completely closed, the door can be reliably closed by the door driving device.

  Further, since the door is driven to close after a predetermined time has passed after the notification by the notification means such as a buzzer, the user can know the closing operation start timing and can be operated safely.

  Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. FIG. 16 is a cross-sectional explanatory view of the main part of the refrigerator in the second embodiment of the present invention, and FIG. 17 is a perspective view showing the configuration of the connecting member in the second embodiment of the present invention. In addition, about the same structure as Example 1 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the figure, the connecting member 700 integrally includes a connecting member locking portion 710 for fixing to the reinforcing member 410, and a connecting member opening portion 730 and a closing portion 720 configured to open and close the drawer door. Alternatively, the vegetable compartment door (6a in the figure) can be opened and closed by the driving force of the driving device 600 on the main body side.

  Then, a protrusion or hole 751 is provided at the rear portion of the connecting member 700, and is removably engaged with the hole or protrusion 15b provided in the container bottom 15a. The door opening 730 of the connecting member is configured to be difficult to shift in directions other than the door opening direction even when the maximum first force for pulling the door from the stop state is applied.

  In FIG. 17, the protruding portion has a rib shape. However, the present invention does not restrict the shape, and may have a column shape or a pin shape, for example.

  Since it is configured as described above, in the second embodiment of the present invention, even when the connecting member 700 receives the driving force of the driving device 600 on the main body side, the deviation of the door in directions other than the opening / closing direction can be reduced. A refrigerator capable of smoothly opening and closing the vegetable compartment door (6a in the figure) can be provided.

  Moreover, since the said latching | locking part can be removed, when the container 15 is cleaned, it becomes a structure which can remove this container easily and can wash with water.

  Further, if the protrusion is formed in a circular pin shape and the hole is a round hole, the manufacturing process is facilitated, and thus the structure is advantageous in terms of manufacturing cost.

  A third embodiment of the present invention will be described below with reference to FIGS. FIG. 18 is a plan view showing the configuration of the drawer door driving device in the third embodiment of the present invention, and FIG. 19 is a perspective view showing the configuration of the driving device on the main body side in the third embodiment of the present invention. . In addition, about the same structure as Example 1 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  First, in FIG. 18, reference numeral 400 denotes door frames provided on the left and right sides of the aforementioned drawer door (vegetable compartment door 6a in FIG. 2), and the drawer is connected to connect the left and right door frames 400. The reinforcing member 410 is formed and installed in a U shape when viewed from the front of the door. The reinforcing member 410 includes a plurality of connecting members 700a and 700b, which will be described later. The connecting members 700a and 700b are driving devices 600a on the main body side attached to the main body side (corresponding to 600 in FIG. The drawer door is automatically opened and closed by receiving a driving force from the drive transmission members 640a and 640b provided in 600a) of FIG.

  In the drive device 600a on the main body side, drive transmission members 640a and 640b as rotational drive bodies are rotatably supported around drive shafts 620a and 620b as rotation output shafts. 640b is provided with a plurality of door opening push portions 660a and 660b arranged at positions where the distance from the rotation center is gradually changed toward the rotation direction so that the drawer door can be opened.

  The drive transmission members 640a and 640b are provided with door closing push portions 670a and 670b so that the drawer door can be closed.

  The connecting members 700a and 700b are integrated with locking portions 710a and 710b of the connecting member for fixing to the reinforcing member 410 with the opening portions 730a and 730b of the connecting member and the closing portions 720a and 720b of the connecting member. Or it is formed separately.

  The door opening portions 730a and 730b of the connecting member have a plurality of stepped pushes arranged at positions corresponding to the plurality of door opening push portions 660a and 660b arranged in the drive transmission members 640a and 640b described above. By providing a surface, the rotational movement of the drive transmission members 640a, 640b is rotated in the direction of the arrows CCWa, CCWb, for example, and changed to the linear movement of the door opening portions 730a, 730b of the connecting member, thereby The drawer door can be opened.

  Further, the door closing portions 720a and 720b of the connecting member are provided with door closing pressing surfaces 722a and 722b at positions corresponding to the door closing pressing portions 670a and 670b provided in the drive transmission members 640a and 640b described above. The rotational movement of the drive transmission members 640a and 640b is changed to, for example, the linear movement of the closing portions 720a and 720b of the connecting member by rotating in the directions of the arrows CWa and CWb opposite to those when the drawer door is opened. Thus, the drawer door can be closed. In other words, when the refrigerator door is closed, the drive transmission members 640a and 640b are provided with the door closing push portions 670a and 670b capable of closing the drawer door in a state where the closing method is insufficient (half door open state), By changing the rotational movement of the door closing push portions 670a and 670b to the linear movement of the connecting members 700a and 700b, the drawer door in the half door open state can be closed.

  Next, a description will be given with reference to FIG. FIG. 19 shows an embodiment in which the drive transmission members 640a and 640b described above with reference to FIG. 18 are driven by a single motor.

  In the figure, a motor pinion 25a is provided on the rotating shaft of the motor 24a. The output of the motor 24a and the configuration of the motor pinion 25a are such that the drive system on the left side in the figure and the drive system on the right side in the figure can be driven simultaneously. Is set.

  For example, as the drive system on the left side of the figure, the motor pinion 25a and the idler 26a are engaged with each other and decelerated. The idler 26a and the idler pinion 27a rotate as a unit, and the idler pinion 27a meshes with the idler 28a. The idler 28a and the idler pinion 29a rotate as a unit, and the idler pinion 29a is engaged with the drive gear 30a and decelerated. The drive shaft 620a and the drive gear 30a are coupled. With such a gear configuration, the rotational speed of the motor 24a is reduced to, for example, about 1/100, and the drive transmission member 640a provided on the drive shaft 620a is rotated. .

  For example, as the drive system on the right side of the figure, the motor pinion 25a and the idler 26b are engaged with each other and decelerated. The idler 26b and the idler pinion 27b are configured to rotate as a unit, and the rotation direction of the drive transmission member 640a on the left side in the drawing and the rotation direction of the drive transmission member 640b on the right side in the drawing face each other. Provide. Of these, the idler pinion 27b meshes with the idler 28b. The idler 28b and the idler pinion 29b rotate as a unit, the idler pinion 29b meshes with the gear 60, and the gear 60 meshes with the drive gear 30b and is decelerated. The drive shaft 620b and the drive gear 30b are connected. With such a gear configuration, the rotational speed of the motor 24a is reduced to, for example, about 1/100, and the drive transmission member 640b provided on the drive shaft 620b is connected to, for example, Then, the drive transmission member 640a is rotated in the direction opposite to the rotation direction.

  Note that the drive transmission members 640a and 640b described above with reference to FIG. 18 may be driven by a single motor, for example, as described above with reference to FIG. In this case, since the output of each motor can be reduced, the life of the apparatus can be extended.

  Since it is comprised as mentioned above, since the 3rd Example of this invention can install multiple mechanisms which drive opening and closing of a vegetable compartment door (6a of FIG. 2), the door attachment surface 401a of a right-and-left door frame, In other words, the force that pushes 401b and the force that closes it, in other words, the left and right forces that open and close the drawer door can be made substantially uniform.

  Therefore, even when a load which is “the maximum first force for pulling the drawer door from the stopped state” is applied to the drawer door, such as when the magnetic packing is separated, or the door frame 400 is supported. Even if the weight of the food stored in the storage container is different on the left and right of the storage container and the above-mentioned “maximum first force to open the drawer door from the stopped state” is different on the right and left, Can be opened or closed almost simultaneously, so that a refrigerator that can smoothly open and close the drawer door can be provided.

  Further, since the left and right drive transmission members 640a and 640b can be driven by one motor 24a, a refrigerator that is advantageous in terms of manufacturing cost can be provided.

  Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 20 is a cross-sectional view of the main part of the refrigerator in the fourth embodiment of the present invention, FIG. 21 is a cross-sectional view of the main part of the BB line in FIG. 20, and FIG. It is the perspective view seen from the back surface which shows the structure of a drawer container.

  In addition, about the same structure as Example 1 and Example 3 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In this embodiment, the functions of the opening portions 730a and 730b of the connecting members of the connecting members 700a and 700b and the functions of the closing portions 720a and 720b of the connecting members are integrated with the bottom surface of the drawer container 16 described later. Alternatively, it is provided separately.

  20 to 22, the vegetable compartment door 6a is moved forward by the left and right door frames 420 movably installed by the rollers 421 provided on the inner box 1b and the rollers 422 provided on the door frame 420. It is supported so that it can be pulled out freely. A drawer container 16 is provided between the left and right door frames 420 and can be pulled out together with the vegetable compartment door 6a.

  And the opening part 730c, 730d of the connection member of a container is provided in the bottom face of the said drawer | drawing-out container 16, or the separate body, The drive part of the main body side attached to the main body side is provided with the door opening parts 730c, 730d The drawer door is automatically opened by receiving a driving force from drive transmission members 640a and 640b provided in 600a.

  Further, the container closing members 720c and 720d are provided integrally or separately on the bottom surface of the drawer container 16, and the container doors 720c and 720d are connected to the main body side driving device 600a attached to the main body side. The drawer door is automatically closed by receiving a driving force from the provided drive transmission members 640a and 640b.

  In the above-described configuration, for example, a plurality of reinforcing ribs 16b are provided on the bottom surface of the drawer container 16 to improve the strength of the drawer container 16 itself. If the door frame flange 420a of the door frame 420 is configured to be fitted, the opening portions 730c and 730d of the connecting member of the container that receives the driving force from the drive transmission members 640a and 640b described above, and the closing portion 720c of the container, Since 720d is stable in strength, the drawer door can be opened and closed smoothly.

  In addition, as a method of providing separately on the bottom surface of the drawer container 16, for example, only the door opening portions 730c and 730d of the container subjected to a large load and the container closing portions 720c and 720d are provided with duracon having mechanical strength and lubricity. It is preferable that the molded article is molded by resin or polyamide resin or the like, and fixed to the bottom of the drawer container 16 itself made of styrene resin or polypropylene resin having good moldability by adhesion or insert molding. .

  Since it is configured as described above, the fourth embodiment of the present invention can reduce the force required to open the drawer door of the refrigerator and can open the door easily and electrically, or automatically from the so-called half-door state. Thus, it is possible to provide a refrigerator capable of improving the energy saving effect by electrically closing the door. In addition, for example, the reinforcing member 410 and the engaging portion 710 of the connecting member as described in the third embodiment can be dispensed with, so that a refrigerator advantageous in terms of manufacturing cost can be provided.

  The fifth embodiment of the present invention will be described below with reference to FIGS. FIG. 23 is a cross-sectional explanatory view of the main part of the refrigerator in the fifth embodiment of the present invention, and FIG. 24 is a perspective view seen from the back side showing the configuration of the drawer container in the fifth embodiment of the present invention. In addition, about the same structure as Example 4 mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  23-26, 420 is the door frame provided in the right and left of the vegetable compartment door 6a (equivalent to the vegetable compartment door 6a of FIG. 2), and so as to connect between the left and right door frames 420, and The reinforcing member 411 is provided so as to be U-shaped when viewed from the front of the drawer door. The drawer container 17 is placed on the door frame 420 and the reinforcing member 411, and connecting members 700e and 700f described later are formed integrally or separately on the bottom portion 17a of the drawer container 17.

  The connecting members 700e and 700f include connecting member locking portions 710e and 710f configured to be locked to the reinforcing member 411, connecting member opening doors 730e and 730f, which will be described later, and a connecting member. Doors 720e and 720f.

  And the attachment height position of the opening parts 730e and 730f of the connecting member and the closing parts 720e and 720f of the connecting member is at least partially in the thickness direction with respect to the reinforcing member 411 when viewed from the front of the vegetable compartment door 6a. Overlapping position. In other words, the opening portions 730e and 730f of the connecting member, the closing portions 720e and 720f of the connecting member, and the reinforcing member so that the dimension h53 in which the storage depth of the drawer container 17 shown in FIG. The overlap dimension h52 with 411 is set larger than zero.

  When the vegetable compartment door 6a is pulled out by setting the overlapping dimension h52 to be smaller than a gap dimension h51 between the lower surface of the bottom 17a of the drawer container and drive transmission members 640a and 640b described later, the reinforcing member 411 is configured not to contact the drive transmission members 640a and 640b.

  The locking portions 710e and 710f of the connecting member are detachably fitted to the base members 711e and 711f for positioning the connecting members 700e and 700f and the reinforcing member 411 and the connecting members 700e and 700f to the reinforcing member 411. It has pinching portions 712e and 712f to be combined.

  The connecting members 700e and 700f are drive transmission members 640a and 640b (shown in FIG. 4) provided on the drive device 600a on the main body side attached to the main body side (corresponding to 600 in FIG. 2 and 600a in FIG. 23). It is equivalent to 640, and is configured to automatically open and close the vegetable compartment door 6a by receiving a driving force from 640a and 640b) in FIG.

  A plurality of door opening portions 730e and 730f of the connecting member are disposed at positions corresponding to the plurality of door opening push portions 660 (corresponding to 660 in FIG. 4) disposed on the drive transmission members 640a and 640b described above. By providing a stepped push surface (for example, a surface corresponding to eight steps from the first push surface 731 of FIG. 4 to the eighth push surface 738), the rotational movement of the drive transmission members 640a and 640b is performed. The vegetable compartment door 6a can be opened by changing the connecting members 700e and 700f into a linear motion.

  Further, the door closing surfaces 720e and 722f (FIG. 4) are located at positions corresponding to the door closing portions 670 (corresponding to 670 in FIG. 4) provided on the drive transmission members 640a and 640b described above. 24, 722e and 722f) in FIG. 24, the rotational movement of the drive transmission members 640a and 640b is rotated in the opposite direction to that when the drawer door is opened, for example. The vegetable compartment door 6a can be closed by changing the connecting members 700e and 700f to linear motion.

  In the above configuration, the reinforcing member mounting groove portion 17b that fits the reinforcing member 411 is formed on the bottom portion 17a and the container side wall of the drawer container, but the fitting margin between the reinforcing member mounting groove portion 17b and the reinforcing member 411 is formed. By properly setting the fitting margin between the above-described sandwiching portions 712e and 712f and the reinforcing member 411, the drawer container 17 and the connecting members 700e and 700f are removed from the reinforcing member 411. If it is configured to be possible, it can be removed and washed with water when the drawer container 17 is cleaned, so that a refrigerator with good cleanability can be provided.

  Further, if the height of the inner surface of the bottom portion 17a of the drawer container and the height of the ceiling surfaces 714e and 714f of the connecting members are set substantially the same as shown in FIG. 23, the connecting members 700e and 700f are formed integrally or separately. Since the bottom surface of the drawn container 17 can be made substantially flat, there is no problem in cleaning performance.

  Since it is configured as described above, the fifth embodiment of the present invention can reduce the force required to open the drawer door of the refrigerator and can open the door easily and electrically, or automatically from the so-called half-door state. Thus, it is possible to provide a refrigerator capable of improving the energy saving effect by electrically closing the door.

  In addition, since a plurality of mechanisms for driving the opening / closing of the drawer door can be installed on the bottom of the container, the left and right forces for opening / closing the drawer door can be made substantially uniform. Therefore, even when a load that is “the maximum first force for pulling out the drawer door from the stopped state” is applied to the drawer door, such as when the magnetic packing is separated, or the door frame 420 is supported. Even if the weight of the food stored in the storage container is different on the left and right of the storage container and the above-mentioned “maximum first force to open the drawer door from the stopped state” is different on the right and left, Can be opened or closed almost simultaneously, so that a refrigerator that can smoothly open and close the drawer door can be provided.

  Further, since the door drive device for opening and closing the door is provided, and the height position of the opening portion and the closing portion of the drive device is at least partially overlapped with the reinforcing member when viewed from the front of the drawer door, It is possible to provide a refrigerator in which the storage depth of the stored food storage container installed therein is small.

(Application to others)
In the present embodiment, an example in which the door driving device 500 is provided on the drawer door of the freezer compartment 5 or the vegetable compartment 6 is shown. However, the present invention is not limited to this embodiment, and the refrigerating compartment door 2 is rotatable. It goes without saying that the same effect can be obtained even if it is provided on the door.

  Further, in the present embodiment, the configuration in which the refrigerator is provided with the door driving device has been described, but it is not limited to the refrigerator, for example, a file cabinet for storing documents or a sink built-in type that is used by pulling out toward the front. It can be applied to a drawer-type device such as a dishwasher, and in that case, it is clear that the same effect as described in the present invention can be obtained.

The perspective view which shows the structure of the refrigerator by this invention. The principal part cross-section explanatory drawing of the refrigerator in the 1st Example of this invention. The 2nd door state detection means installation explanatory drawing in the 1st Example of this invention. The top view which shows the structure of the drawer door drive device in 1st Example of this invention. The perspective view which shows the structure of the connection member in the 1st Example of this invention. The top view which shows the structure of the drive transmission member in 1st Example of this invention. The perspective view which shows the structure of the drive device by the side of the main body in the 1st Example of this invention. FIG. 5 is a cross-sectional explanatory view of a main part of the AA line in FIG. 4. The perspective view which shows the structure of the door frame and reinforcement member in 1st Example of this invention. The figure explaining opening operation | movement of the drawer door drive device in 1st Example of this invention. The figure explaining closing operation of the drawer door drive device in the 1st example of the present invention. The block diagram which shows the structure of the control system of the door drive device in one Example of this invention. The flowchart which shows the control procedure in the case of opening operation | movement of the door drive device in one Example of this invention. The flowchart which shows the control procedure in the case of closing operation of the door drive device in one Example of this invention. The flowchart which shows the control procedure started from the time of the door full open of the door drive device in one Example of this invention. The principal part cross-section explanatory drawing of the refrigerator in the 2nd Example of this invention. The perspective view which shows the structure of the connection member in the 2nd Example of this invention. The top view which shows the structure of the drawer door drive device in the 3rd Example of this invention. The perspective view which shows the structure of the drive device by the side of the main body in the 3rd Example of this invention. Cross-section explanatory drawing of the principal part of the refrigerator in the 4th Example of this invention. BB line principal part sectional explanatory drawing in FIG. The perspective view seen from the back surface which shows the structure of the drawer container in the 4th Example of this invention. The principal part cross-section explanatory drawing of the refrigerator in the 5th Example of this invention. The perspective view seen from the back surface which shows the structure of the drawer container in the 5th Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 1a Main body side partition part 1b Inner box 1c Inner box back surface 2 Refrigeration room 2a Refrigeration room door 3 Switching room 3a Switching room door 4 Ice making room 5 Freezing room 5a Freezing room door 6 Vegetable room 6a Vegetable room door 7 Operation display Port 8 Open switch 8a Open switch 8b for freezer compartment door Open switch 12, 15, 16, 17, 901 for vegetable compartment door Container 12a, 15a, 16a, 17a, 901a Container bottom 13 Closer 14 Magnet packing 15b Hole or protrusion 16b Reinforcement Rib 16c Flange locking portion 17b Reinforcing member mounting groove 24, 24a Motor 25, 25a Motor pinion 26, 26a, 26b, 28, 28a, 28b Idler 27, 27a, 27b, 29, 29a, 29b Idler pinion 30, 30a, 30b Drive gear 31 Torque limiting means 32 Rotation detecting means
33 Movement amount 34 Retraction position 35 Opening amount 36 Arrows 38, 39 Clearance 40 Origin position 42 Timer 51 Control means 52 Machine room 60 Gear 70 Notification means 72 Door gap 92a Timer T1 change switch 92b Timer T2 change switch 400, 420, 908 Door frame 401a, 401b, 909a, 909b Door mounting surface 402 of door frame Rear end 403 of door frame Reinforcement 410, 411, 902 Reinforcement member 420a Door frame flange
421, 422 Roller 500, 500a Door drive device 510 First door state detection means 511, 521, 531 Magnet 512, 522, 532 Magnetic detection sensor 520 Second door state detection means 530 Position detection means 600 of the drive transmission member, 600a Drive unit 610, 610a Drive unit case 620 on main body side Drive shaft 640, 640a, 640b, 907 Drive transmission member 650 Bearing portion 660, 660a, 660b Door opening push portion 661 First plane portion 662 Second plane portion 663 Third plane portion 664 Fourth plane portion 665 Fifth plane portion 666 Sixth plane portion 667 Seventh plane portion 668 Eight plane portions 670, 670a, 670b Closed door pushing portion 680 Top end portion 700, 700a , 700b, 700e, 700f Connecting members 710, 710a, 710b, 710e, 7 0f Connecting member locking portions 711, 711e, 711f Base portions 712, 712e, 712f Nipping portions 713 Locking tools 714e, 714f Connecting member ceiling surfaces 720, 720a, 720b, 720e, 720f Connecting member closing door portions 720c, 720d Container closing portion 721 Space 722, 722a, 722b, 722e, 722f Door closing pushing surface 730, 730a, 730b, 730e, 730f Connecting member opening portion 730c, 730d Container opening portion 731 First pushing surface 732 Second Push surface 733 3rd push surface 734 4th push surface 735 5th push surface 736 6th push surface 737 7th push surface 738 8th push surface 740 Bottom end 751 Projection or hole 752 Connecting member Rear end portion 900 Conventional refrigerator main body 903 Locking portion 904 Screw 905 Opening door portion 906 The door portion 907a drive pin

Claims (8)

In a refrigerator equipped with a door driving device that opens the door of the refrigerator,
The door driving device includes a plurality of rotation driving means provided in a refrigerator main body, and a plurality of positions at a position where the distance from the rotation center increases as the rotation driving means rotates in the direction opposite to the rotation direction. A rotation member provided with a power transmission unit, a control unit for controlling the rotation drive unit, and a connection provided on the door side for transmitting power from the power transmission unit and converting the rotation motion of the rotation member into a linear motion. And having a member
The power transmission unit has a plane part, and the plane direction of the plane part is formed so as to be substantially the rotation center direction,
The connecting member has a plurality of stepped step portions, and the power is transmitted while the step portions and the flat portion are in substantially surface contact, thereby opening the door. .   2. The door according to claim 1, wherein the door is a drawer-type door, and the drawer door includes a door, door frames provided on the left and right sides of the door, and members formed across the left and right door frames. A refrigerator having the connecting member on the member.   The refrigerator according to claim 2, wherein the member is formed in a U shape when viewed from the front of the door.   In Claim 1, The said door is a drawer-type door, This drawer door has a door and the door frame provided in the right and left of this door, A drawer container is mounted in this door frame. The refrigerator is characterized in that the connecting member is formed integrally with or separate from the drawer container. In a refrigerator with a drawer door that can be pulled out in the front-rear direction,
Rotation drive means fixed to the refrigerator body and a rotation member provided with a plurality of power transmission portions at positions where the distance from the rotation center is gradually changed in the rotation direction by rotating the rotation drive means;
Control means for controlling the rotation driving means;
A power transmission unit that transmits power from the power transmission unit and converts rotational motion of the rotating member into linear motion;
The drawer door includes a door, door frames provided on the left and right sides of the door, and members formed across the left and right door frames, the connecting member is provided on the members, and the power transmission unit The refrigerator is characterized in that the portion to which power is transmitted is located outside the outer periphery of the member.   6. The refrigerator according to claim 5, wherein the member is formed in a U shape when viewed from the front of the door.   6. The drawer door according to claim 5, wherein the drawer door includes a door and door frames provided on the left and right sides of the door, a drawer container is placed on the door frame, and the connecting member is connected to the drawer container. A refrigerator formed integrally or separately.   6. The refrigerator according to claim 5, wherein the drawer door is closed by rotating the rotation driving means in a direction opposite to that of the opening of the drawer door.

Images