JP2017072305A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that reduces door opening force even when a large amount of food is put in a container and suppresses a door from tilting to the right and left in opening/closing operation and makes the door be drawn out straight to the front to improve usability.SOLUTION: A refrigerator comprises: a pair of support rails which are provided on both right and left side faces of a storage container while extending forward and backward; a pair of guide grooves which are provided on right and left inner side faces of a stock room while extending forward and backward and where slide parts of the support rails are fitted and roll; a pair of first support rollers which support lower surfaces of the support rails when the storage container is closed and are so arranged as to move the storage container forward and backward while rolling; and a pair of second support rollers which support the lower surfaces of the support rails when the storage container is opened and are so arranged as to move the storage containers forward and backward while rolling. The pair of second support rollers is located in front of a front end of the storage container when the storage container is closed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a refrigerator.

  Conventionally, a refrigerator in which the door opening force of the storage case is reduced is known (see, for example, Patent Document 1 and Patent Document 2).

  According to claim 1 of Patent Document 1, “a movable handle and a fulcrum are provided on a door formed by filling a space formed by an outer plate bent up and down, a cap disposed on the side surface thereof and an inner plate with foam insulation. A refrigerator is disclosed in which a door opening force reduction mechanism for reducing the door opening force by the lever principle of the shaft and lever is provided on the upper part of the outer plate independently of the cap.

  Further, in claim 1 of Patent Document 2, “a storage chamber formed in the refrigerator main body, a door for opening and closing the storage chamber, a storage container disposed in the storage chamber, and the storage container are placed. A base, a handle on the front of the base, a rail provided on the surface of the storage chamber, a moving body provided on the rear of the base and moving on the rail, and provided in front of a lower portion of the storage chamber And a first support that supports the base so as to be movable in the front-rear direction, and a height position of each sliding portion of the first support, the rail, and the movable body, There is disclosed a “refrigerator” characterized in that the height position of at least a part of the handle portion is close to or the same as the height position of the base bottom surface. Further, in claim 2, “a second support body provided in front of the first support body is provided, and the second support body is such that the moving body is located on the rear end side of the rail. In this case, when the handle is operated and the movable body moves a predetermined distance from the rear end side of the rail to the front side of the front end of the base, the base is supported to support the storage. The container is characterized in that it moves in the front-rear direction so that the height positions of the front part and the rear part do not change ", and further, a configuration in which" the second support is a slider "is disclosed in claim 5. .

JP 2004-116842 A JP 2014-66419 A

  However, in the apparatus of Patent Document 1, the movable handle is provided at the center of the left and right of the door so that when the handle (12) is operated, the lever (13) is interlocked and protrudes toward the refrigerator (1). It moves and pushes a partition part, and it is the structure which pushes and opens a door to the near side with the reaction force. Here, the lever operating force is made smaller than the door opening force using the lever principle. The lever that opens the door is located in only one central part of the door, so if the food is stored in the container with a bias to the left or right, or if there is a difference in the suction force between the left and right packings, Unbalance occurs in the force, and the door opens while tilting to the left or right. A configuration for eliminating such imbalance is not described.

  In the apparatus of Patent Document 2, the second support body positioned in front of the front end of the base is not a rotating roller but a fixed slider having sliding friction. Therefore, when the storage container is expanded and a large amount of food is stored, there is a problem that the opening force increases due to an increase in frictional resistance because the pressure on the slider increases. Further, when the vicinity of the front end of the base is supported by the slider, the base and the slider generate the same frictional resistance in the front-rear direction and the left-right direction. Therefore, if you try to open the handle by pulling it further forward, the frictional resistance in the front-rear direction and the frictional resistance in the left-right direction are equal, so the food is stored in the container with a bias to the left and right Alternatively, when the position where the handle is pulled is shifted in the left-right direction from the center position, the base tends to be pulled out while being tilted in the left-right direction at the same time as moving forward. For this reason, there is a problem that when the width of the storage container and the base is expanded to increase the storage capacity, the tendency becomes more remarkable.

  Therefore, the present invention reduces the door opening force even when a large amount of food is put into the container, suppresses the door from tilting left and right during opening and closing operations, and improves usability by being drawn straight forward. To provide a refrigerator.

  The refrigerator of the present invention that solves the above problems is a storage chamber that is open at the front, a storage container that is supported so as to be movable back and forth so that it is in an open position in the front and a closed position in the rear, A pair of support rails extending in the front-rear direction on both the left and right side surfaces of the storage container, and extending in the front-rear direction on the left and right inner side surfaces of the storage chamber, the sliding portions of the support rails are fitted A pair of guide grooves that roll and a pair of first support rollers arranged to support the lower surface of the support rail when the storage container is closed and to move the storage container back and forth while rolling, A pair of second support rollers arranged to support the lower surface of the support rail when the storage container is opened and move the storage container back and forth while rolling. Is It has a configuration which is positioned further forward than the front end of the container when the container closed.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that it is easy to open and close a door, and can provide the refrigerator which improved usability.

It is a front view of the refrigerator in embodiment of this invention. It is a sectional side view which shows typically the AA cross section of FIG. It is a front view showing the structure in the store | warehouse | chamber of a refrigerator. It is the top view of the refrigerator seen from the B direction of FIG. It is a disassembled perspective view which shows the structure of the vegetable compartment container of the refrigerator in embodiment of this invention. It is a perspective view which shows the structure of the vegetable compartment container of the refrigerator in embodiment of this invention. It is CC sectional drawing which shows the structure of the vegetable compartment container of the refrigerator in embodiment of this invention. It is the (a) front view and (b) DD sectional view which show the structure of the vegetable compartment container of the refrigerator in embodiment of this invention. It is a top view which shows the structure of the vegetable compartment container of the refrigerator in embodiment of this invention, (a) Whole vegetable compartment and (b) E section enlarged view. It is a longitudinal cross-sectional view which shows the structure of the vegetable compartment container of the refrigerator in embodiment of this invention, (a) A closed position and (b) An open position. It is a longitudinal cross-sectional view which shows the structure and operation | movement of the open handle of the vegetable compartment of the refrigerator in embodiment of this invention, (a) A closed state, (b) The handle open operation middle, (c) The handle open operation completed Show. It is a side view which shows opening operation | movement of the vegetable compartment of the refrigerator in 2nd embodiment of this invention.

  Hereinafter, an example for carrying out the present invention (hereinafter referred to as “embodiment”) will be described in detail with reference to the drawings as appropriate. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted. Further, in the following description, the vertical and horizontal directions are based on the vertical and horizontal directions shown in FIG. 1, and the front and rear directions are based on the front and rear directions shown in FIG.

First, the whole structure of the refrigerator which concerns on embodiment of this invention is demonstrated.
≪Overall configuration of refrigerator≫
FIG. 1 is a front view of a refrigerator in an embodiment of the present invention. As shown in FIG. 1, the refrigerator 1 of this embodiment has the refrigerator compartment 2 and the freezer compartment 3 from upper direction. As an example, the refrigerator compartment 2 is a storage room having a refrigeration temperature zone of approximately 3 to 5 ° C., and the freezer compartment 3 is a storage chamber having a refrigeration temperature zone of approximately −18 ° C.

  The refrigerating room 2 is divided into left and right parts, so-called French-type refrigerating room doors 2a (first door) and refrigerating room doors 2b (second doors), which are spread in front (front side in FIG. 1). It has. The refrigerator compartment doors 2a and 2b rotate around the hinge 5a and the hinge 5b. In order to close the gap between the left and right refrigerating room doors 2a and 2b, rotary slots 6a and 6b are provided along the side of the refrigerating room door 2a close to the refrigerating room door 2b.

  Similarly to the refrigerator compartment 2, the freezer compartment 3 also includes a French-type freezer compartment door 3a (third door) and a freezer compartment door 3b (fourth door).

  In the following description, the left and right refrigerator compartment doors 2a and 2b and the left and right freezer compartment doors 3a and 3b may be simply referred to as the door 2a, the door 2b, the door 3a, and the door 3b.

  The refrigerator 1 has a door sensor (not shown) that detects the open / closed state of each of the doors 2a, 2b, 3a, and 3b, and at least one of the doors 2a, 2b, 3a, and 3b is open. When the state determined to be present continues for a predetermined time (for example, 1 minute or longer), notification means (not shown) for notifying the user of the state, and temperature settings of the refrigerator compartment 2, the freezer compartment 3, etc. The control panel 59 shown in FIG. 1 provided with a temperature setting device, a predetermined operation unit, a display unit and the like are provided.

  FIG. 2 is a side sectional view schematically showing the AA section of FIG. 1. As shown in FIG. 2, the outside of the refrigerator 1 and the inside of the refrigerator 1 are separated by a heat insulating box 7 formed by filling a foam heat insulating material (foamed polyurethane) between the inner box 7a and the outer box 7b. ing. In the refrigerator, the refrigerator compartment 2 and the freezer compartment 3 arranged in the vertical direction with different temperature zones are partitioned insulatively by a heat insulating partition wall 8. A plurality of door pockets 9a and 9b are provided on the inner side of the doors 2a and 2b and the doors 3a and 3b. The refrigerator compartment 2 is partitioned into a plurality of storage spaces in the vertical direction by a plurality of shelves 10. At the bottom of the refrigerator compartment 2, there is a drawer-type vegetable storage chamber 4, a top shelf 47 that closes the top surface of the vegetable storage chamber 4 when closed, and a drawer just above the top shelf 47. A storage container 11 of the type is provided. Draw-out type storage containers 12a and 12b are respectively provided behind the doors 3a and 3b provided in front of the storage chamber of the freezer compartment 3.

  As shown in FIG. 2, the doors 2 a, 2 b, 3 a, 3 b are provided with door packings 13 around the doors, and when the doors 2 a, 2 b, 3 a, 3 b are closed, the opening periphery of the front surface of the refrigerator 1 The inside of the storage space (the refrigerator compartment 2 and the freezer compartment 3) is closed and sealed by being in close contact with the section, and leakage of cold air from these storage spaces to the outside is prevented.

  As shown in FIG. 2, the cooler 14 is disposed in a cooler storage chamber 15 provided substantially at the back of the freezer compartment 3. The cooler 14 can exchange heat between the refrigerant in the internal piping of the cooler 14 and the air. Above the cooler 14, an internal fan 16 (for example, a motor-driven fan) is provided. The air cooled by heat exchange in the cooler 14 (hereinafter, this cooled low-temperature air is referred to as “cold air”) is sent through the refrigerator blower 17 and the freezer compartment blower duct 18 by the internal fan 16. The refrigerator compartment 2 and the freezer compartment 3 are sent to the storage compartments.

  FIG. 3 is a front view illustrating the configuration inside the refrigerator.

  As shown in FIG. 3, the air ducts to the refrigerator compartment 2 and the freezer compartment 3 are provided on the back side of the storage compartments of the refrigerator 1 as indicated by broken lines in FIG. 3.

  The storage room to which the cool air of the cooler 14 is sent is controlled by the cool air control means 19.

  Here, the cool air control means 19 is a single damper having a single opening that can be freely opened and closed, and controls the air blowing to the refrigerator compartment air duct 17. Specifically, when the opening of the cold air control means 19 is in the open state, the cold air is sent to the refrigerator compartment 2 through the refrigerator compartment air duct 17. That is, the cold air is sent to the refrigerator compartment 2 from a plurality of outlets 20 provided along the extending direction of the refrigerator compartment air duct 17. When the opening a of the cool air control means 19 is closed, the cool air is sent to the freezer compartment 3 from the outlets 21 and 21 via the freezer compartment air duct 18 (see FIG. 2). This cold air flows into the cooler storage chamber 15 through a freezer return port 22 (see FIG. 2), which will be described later, provided in the back of the freezer compartment 3, and exchanges heat with the cooler 14. Yes. Thereby, cold air can be supplied to the freezing temperature zone room (freezing room 3) and the refrigerating temperature zone room (refrigerating room 2) which are storage rooms having different temperature zones by one cooler 14. .

  As described above, switching of cool air to be blown into each storage chamber of the refrigerator 1 can be performed by appropriately controlling the open / close of the cool air control means 19.

  Below the cooler 14, a defrosting heater 23 that is a defrosting means is installed, and above the defrosting heater 23, in order to prevent defrosting water from dripping onto the defrosting heater 23, An upper cover 24 is provided.

  The defrost water generated by the defrosting (melting) of the frost attached to the wall of the cooler 14 and the surrounding cooler storage chamber 15 flows into the gutter 25 provided at the lower part of the cooler storage chamber 15. It reaches the evaporating dish 28 disposed in the machine room 27 through the drain pipe 26, is evaporated by the heat of the compressor 29 (see FIG. 3) and a condenser which is a radiator (not shown), and is discharged outside the refrigerator. It is like that.

  As shown in FIG. 2, a control board 30, which is a control means equipped with a CPU, a memory such as a ROM and a RAM, an interface circuit, and the like, is disposed as a control unit on the upper surface side of the ceiling wall of the refrigerator 1. The refrigerator 1 includes a refrigerator temperature sensor (not shown) that detects the temperature of the refrigerator 2, a refrigerator temperature sensor (not shown) that detects the temperature of the refrigerator, a refrigerator temperature sensor (not shown) that detects the temperature of the cooler 14, and the like. A temperature sensor is provided, and the detected temperature is input to the control board 30.

  The control board 30 is connected to a door sensor (not shown) that detects the open / closed state of the doors 2a, 2b, 3a, and 3b, and the control panel 40 (see FIG. 1) provided on the door 2a. . The control board 30 controls the ON / OFF of the compressor 29, the control of the rotational speed, the control of each drive motor (not shown) for driving the cool air control means 20, and the internal blower by the program previously installed in the ROM. By controlling the ON / OFF of 16 and the rotational speed, controlling the ON / OFF of the external fan (not shown), the rotational speed, etc., ON / OFF of the notifying means (not shown) for notifying the door open state, etc. Control the operation of the entire refrigerator.

  FIG. 4 is a plan view of the refrigerator viewed from the direction B of FIG.

  In the present embodiment, the rotation doors 6a and 6b are provided on the left door 2a and the door 3a.

  The rotation thresholds 6a and 6b are pivotally supported around a rotation threshold fulcrum 6c provided on the doors 2a to 3a. When the door 2a through the door 3a are closed, the rotary slots 6a and 6b are positioned in parallel with the door 2a through the door 3a so that a gap between the door 2a and the right door 2b or between the door 3a and the right door 3b is formed. Block it. When the user opens the doors 2a to 3a, the rotation thresholds 6a and 6b are rotated around the rotation threshold fulcrum 6c to a position substantially orthogonal to the doors 2a to 3a by the action of a cam (not shown). The rotation holes 6a and 6b are opened without interfering with the doors 2b to 3a. The refrigerator 1 also includes a closer that prevents a so-called half-door by energizing the doors 2a, 2b to 3a, 3b in a closing direction before completely closing the doors 2a, 2b to 3a, 3b. ing.

  Next, the structure of the vegetable storage chamber 4 in this embodiment is demonstrated in detail using FIGS. 5-11.

  FIG. 5 is an exploded perspective view showing the configuration of the vegetable storage chamber 4 in the present embodiment. FIG. 6 is a perspective view showing the configuration of the vegetable storage chamber 4 in the present embodiment, and is incorporated in the refrigerator compartment 2 so as to be movable in the front-rear direction with the vegetable compartment container 31 placed on the vegetable compartment base 32. And the state which pulled out the vegetable storage chamber 4 ahead is shown. 7 is a cross-sectional view taken along the line CC in FIG. FIG. 8: is (a) front view and (b) DD sectional drawing of a vegetable compartment container. FIG. 9 is a top view of the vegetable compartment container. FIG. 10: is a longitudinal cross-sectional view which shows the structure of a vegetable compartment container, (a) The closed position and (b) The open position. FIG. 11 is a longitudinal sectional view showing the configuration and operation of an open handle in the vegetable compartment, and shows a state in which (a) the closed state, (b) during the handle open operation, and (c) the handle open operation completed.

  In FIG. 5 to FIG. 11, a vegetable storage room 4 is provided in the refrigerator compartment 2 of the refrigerator 1 so as to be freely pulled out in the front-rear direction, and is drawn forward with the refrigerator compartment doors 2 a and 2 b opened. The food can be taken in and out of the vegetable storage chamber 4.

  The vegetable storage room 4 includes a vegetable room container 31 and a vegetable room base 32 on which the vegetable room container 31 is placed.

  The vegetable compartment container 31 includes a container main body 33 and a front lid 34 provided on the front surface of the container main body 33. A magnet is built in the rear side of the upper end of the front lid 34, and the surface thereof is a flexible material such as rubber. The magnet packing 35 comprised by this is provided. The container body 33 is injection-molded with a transparent resin, and a side surface from the opening on the upper surface to the bottom surface of the lower surface has a so-called taper taper so that the upper surface is wide and the lower surface is narrow to ensure releasability from the mold. ing.

  The vegetable room base 32 includes a pair of support rails 37 made of, for example, an iron plate provided in the front-rear direction along the left and right side surfaces, a resin-made bottom face 36 connecting the left and right support rails 37, 37, and a bottom face And a bottom glass 38 fitted to the center of the bowl 36. The vegetable compartment container 31 is placed and supported on the top glass 38, and the width of the vegetable compartment base 32 is the bottom of the vegetable compartment container 31. Greater than width. Since the bottom portion glass 38 having a high strength is provided at the center of the vegetable compartment base 32, the vegetable compartment base 32 has a sufficient strength.

  The lower surface of the support rail 37 becomes a support roller mounting surface 40 that supports the vegetable storage chamber 4 movably in the front-rear direction by being mounted on a first support roller 39a and a second support roller 39b described later. At the front end of the support rail 37, a handle support shaft 42 is provided along the left-right direction for supporting an open handle 41, which will be described later, so as to be rotatable in the front-rear direction.

  The support rail 37 is provided in the front-rear direction along the left and right sides of the vegetable compartment base 32, and is formed between the vicinity of the bottom surface of the vegetable compartment container 31 and the inner side surface of the inner box 7 a by the taper of the vegetable compartment container 31. Since it arrange | positions to the clearance gap which arises, in order not to reduce the volume of the vegetable compartment container 31 in order to arrange | position the support rail 37, the volume of the vegetable compartment container 31 can be maximized.

  Along the lower side of the front lid 34, an open handle 41 is provided on the front surface of the vegetable compartment base 32 so as to be pivotable in the front-rear direction around a handle support shaft 42 provided in the left-right direction. . The handle support shaft 42 is provided along the vicinity of the upper side of the open handle 41, and the lower end of the open handle 41 is pivotally supported so as to be rotatable forward.

  As shown in the partial top view of FIG. 9B, the left and right ends of the open handle 41 are arranged to rotate back and forth in conjunction with the open handle 41 and extend rearward and upward of the open handle 41. A handle arm 43 is provided. A cam roller 44 that protrudes in the direction approaching the side surface of the inner box 7b toward the left and right outer sides and is rotatably supported around a rotation shaft provided in the left and right direction is disposed at the distal end of the handle arm 43. Yes. Details of the configuration and operation of the opening handle 41 will be described later.

  The widths of the vegetable compartment base 32 and the open handle 41 are substantially equal to each other and are larger than the entire width of the bottom of the vegetable compartment container 31. The left and right ends of the open handle 41 are close to the left and right inner walls of the inner box 7b. That is, the width of the open handle 41 is slightly smaller than the left and right width of the inner box 7b, but is substantially equal.

  On the inner side surface of the inner box 7b, guide grooves 45, which are concave grooves extending in the front-rear direction, are provided symmetrically.

  In the vicinity of the rear ends of the left and right support rails 37, guide rollers 46, 46 are provided as sliding portions that protrude outwardly and are arranged so as to be rotatable around a rotation axis in the left-right direction.

  When the vegetable storage chamber 4 is incorporated into the refrigerator compartment 2, the left and right guide rollers 46 are supported by rolling so as to be fitted in the respective guide grooves 45, and the vegetable storage chamber 4 is movable in the front-rear direction. is there.

  The first support rollers 39a and 39a and the second support rollers 39b and 39b (only 39a and 39b are shown in FIG. 6) are provided on the left and right sides of the upper surface of the heat insulating partition wall 8 provided on the bottom surface of the refrigerator compartment 2, And it arrange | positions so that it can rotate around the rotating shaft provided in the left-right direction in the recessed part provided in the vicinity of the inner box 7b, and it arrange | positions so that a circumferential surface may protrude rather than the upper surface of the heat insulation partition wall 8. FIG. .

  The second support rollers 39b and 39b are provided in the vicinity of the front end of the heat insulating partition wall 8, and are provided at a position ahead of the front cover 34 of the vegetable compartment when the vegetable storage compartment 4 is closed. The first support rollers 39a and 39a are arranged behind the second support rollers 39b and 39b so that the support rails 37 and 37 are placed when the vegetable storage chamber 4 is closed. The guide rollers 46, 46, the first support rollers 39a, 39a, and the second support rollers 39b, 39b support the vegetable storage chamber 4 while rotating, and the drawer operation to move the vegetable storage chamber 4 support forward or backward Performs a closing operation that moves to. The rotation support shafts of the first support rollers 39a, 39a and the second support rollers 39b, 39b are detachably provided from above by a so-called snap fit utilizing elastic deformation with respect to the heat insulating partition wall 8, and Can be removed and cleaned.

  As shown in FIGS. 7, 9, and 10, when the vegetable storage chamber 4 is closed, the front ends of the support rails 37 and 37 are placed on the first support rollers 39a and 39a disposed on the rear side. And is not placed on the second support rollers 39b and 39b.

  As shown in FIG. 7, an upper surface shelf 47 is provided on the upper surface of the vegetable storage chamber 4 so as to cover the upper surface of the vegetable chamber container 31 when the vegetable storage chamber 4 is closed. Is provided with a shelf front edge 48 made of, for example, a magnetic ferritic stainless steel.

  When the vegetable storage chamber 4 is closed, the magnet packing 35 at the upper end of the front lid 34 is attracted to the shelf front edge portion 48 to close the gap, and the inside of the vegetable chamber container 31 is sealed to obtain airtightness. Therefore, the freshness of the vegetables stored by maintaining the inside of the vegetable compartment container 31 at high humidity can be maintained.

Here, with reference to FIG. 10A, the load applied to the roller in a state where the vegetable storage chamber 4 is closed will be described. The mass of the vegetable storage chamber 4 is m, the acceleration of gravity is g, the distance between the first support roller 39a and the center of gravity G is L1, the distance between the first support roller 39a and the guide roller 46 is L2, and the left and right first When the total load applied to the support rollers 39a and 39a is F1, and the total load applied to the left and right guide rollers 46 is F2, the sign of the downward force is positive from the balance of the vertical force,
mg + F1 + F2 = 0 (Expression 1)
From the balance of moments around the center of gravity: -F1 * L1 + F2 * (L2-L1) = 0 (Equation 2)
From (Expression 2) F2 = F1 × L1 / (L2-L1) (Expression 3)
Substituting (Equation 3) into (Equation 1) to obtain F1,
F1 = −mg × (L2−L1) / L2 (Equation 4)
Substituting (Equation 4) into (Equation 2) to obtain F2,
F2 = −mg × L1 / L2 (Equation 5)
F1 and F2 are obtained from (Expression 4) and (Expression 5).
That is, in proportion to the distances L1 and (L2-L1) from the center of gravity G, the total weight F2 of the weight mg of the vegetable storage chamber 4 applied to the left and right guide rollers 46 and the first left and right support rollers 39a, 39a Is distributed to the total load F1. Here, since the center of gravity G is between the first support roller 39 a and the guide roller 46, the guide roller 46 abuts on the lower side of the guide groove 45 and applies a downward load F <b> 2 to the guide groove 45. Since the guide roller 46 receives an upward reaction force from the guide groove 45, the signs of (Expression 4) and (Expression 5) are negative.

  When the vegetable storage chamber 4 is pulled forward by L1, since the center of gravity G is located just above the first support roller 39a, all loads are applied only to the left and right first support rollers 39a, 39a. The total F1 is equal to the mass mg (F1 = −mg), and the total load applied to the left and right guide rollers 46 is F2 = 0. When the vegetable storage chamber 4 is further drawn forward and the center of gravity G is located just above the second support roller 39b, all the loads are applied only to the left and right second support rollers 39b, 39b, and the total of the loads F1 Is equal to mg (F1 ′ = − mg), and the total load applied to the left and right guide rollers 46 is F2 ′ = 0.

  With reference to FIG. 10B, the load applied to the roller in a state where the vegetable storage chamber 4 is fully opened will be described. It is assumed that the vegetable storage chamber 4 is fully opened and the center of gravity G is moved further forward L1 ′ than the second support roller 39b in front, and the distance between the second support roller 39b and the guide roller 46 is L2 ′. The total load applied to the second support rollers 39b and 39b is F1 ′, and the total load applied to the left and right guide rollers 46 is F2 ′.

When the center of gravity G moves further forward than the second support roller 39b, the vegetable storage chamber 4 generates a counterclockwise moment around the second support roller 39b. It floats from the lower surface of 45 and abuts against the upper surface of the guide groove 45 to give an upward load F2 ′ to the guide groove. Accordingly, the support rail 37 is supported only by the second support roller 39b and the guide roller 46 located at the front, and is not in contact with the first support roller 39a located at the rear.
From the balance of the vertical force, the sign of the downward force is positive,
mg + F1 ′ + F2 ′ = 0 (Expression 6)
From the balance of moments around the center of gravity,
F1 ′ × L1 ′ + F2 ′ × (L2 ′ + L1 ′) = 0 (Expression 7)
From (Expression 7) F2 ′ = − F1 ′ × L1 ′ / (L2 ′ + L1 ′) (Expression 8)
Substituting (Equation 8) into (Equation 6) to obtain F1 ′,
F1 ′ = − mg × (L2 ′ + L1 ′) / L2 ′ (Equation 9)
Substituting (Equation 9) into (Equation 7) to obtain F2 ′,
F2 ′ = mg × L1 ′ / L2 ′ (Equation 10)

  That is, the load F2 ′ obtained by multiplying the weight mg of the vegetable storage chamber 4 by (L2 ′ + L1 ′) / L2 ′ (> 1) by the lever principle is applied to the second support roller 39b, and the guide roller 46 has its own weight. A load which is a ratio L1 / L2 (<1) times the distance from the center of gravity G to mg is applied in the opposite direction. Here, when the opening amount of the vegetable storage chamber 4 is further increased in order to facilitate the taking in and out of the food, since (L2 ′ + L1 ′) remains constant and L2 ′ decreases, (L2 ′ + L1 ′) / L2 Both “L” and (L1 ′ / L2 ′) increase, and the loads F1 ′ and F2 ′ applied to the second support roller 39b and the guide roller 46 increase.

  As described above, when the center of gravity of the vegetable storage chamber 4 is opened to the front of the second support roller 39b, the first support roller 39a does not support the load, and the second support roller A load larger than the weight mg of the vegetable storage chamber 4 is applied to 39b. The load increases as the opening amount of the vegetable storage chamber 4 increases, and becomes maximum when the vegetable storage chamber 4 is fully opened.

  By the way, the opening / closing force for opening and closing the vegetable storage chamber 4 is the sum of the friction forces generated in the first support roller 39a, the second support roller 39b, and the guide roller 46, and is proportional to the friction coefficient and the load. Therefore, in order to reduce the opening / closing force, it is desirable that the first support roller 39a, the second support roller 39b, and the guide roller 46 are all rotary rollers, and the rolling friction is smaller than the sliding friction. In the case where the second support roller 39b is not a roller but a simple protrusion and the sliding friction has a friction coefficient μ1, the second support roller 39b is a rotary roller and has a friction coefficient μ2 (<< μ1). When the load is the same as that of F1 ′, the roller-type opening / closing force is smaller by F1 ′ × (μ1−μ2) in consideration of the difference in friction coefficient. Therefore, by using the second support roller 39b as a rotating roller, it is effective in improving usability by increasing the capacity of the vegetable storage chamber 4 and increasing the opening amount.

  Furthermore, the behavior of the vegetable storage chamber 4 during opening and closing by using the guide roller 46, the first support roller 39a, and the second support roller 39b as rotating rollers will be described. First, the difference in behavior between the rotating roller and the sliding friction is generally described. As an example, when the vehicle is decelerated, the vehicle can be decelerated while maintaining the direction of travel as the wheel continues to rotate. However, when the wheel is locked and sliding friction occurs between the road surface and the wheel, the direction of travel is not maintained because the coefficient of friction does not change in the front-rear direction and the left-right direction, and the vehicle decelerates while performing so-called slip. This is well known as the behavior of an automobile when decelerating on ice or snow. This is because when the rotating roller (wheel) is rotating, the movement in the rotation direction is likely to proceed due to rolling friction, but the movement in the left-right direction is difficult to proceed because of sliding friction. This is because of the accompanying directionality.

  Fig.9 (a) has shown the top view in the state which closed the vegetable storage chamber 4, FIG.9 (b) is an enlarged view of the E section.

  10A, the vegetable storage chamber 4 is placed by left and right guide rollers 46, 46 and first support rollers 39a, 39a. The guide rollers 46, 46 and the first support rollers 39a, 39a is rotatable around a rotation axis in the left-right direction, so when the vegetable storage chamber 4 is opened, these four rollers rotate and are pulled out to the near side.

  Therefore, as shown by the arrows in FIG. 9, even if the opening force P is applied to a position shifted to the left and right from the center in the left-right direction of the vegetable compartment container 31, the vegetable storage chamber 4 is left and right guide rollers 46. , 46 and the first support rollers 39a, 39a, the vegetable compartment tends to advance straight forward even when the opening force P is applied to a position shifted from the center. Therefore, an easy-to-use vegetable room that can be easily opened and closed can be provided. Furthermore, in the present embodiment, the vegetable storage chamber 4 is configured to translate forward at the beginning of opening by the action of the opening handle 41, which will be described in detail later, so that the traveling direction during the opening operation is stable and further convenient. A vegetable storage room 4 can be provided.

  Next, an embodiment of the open handle according to the present invention will be described with reference to FIG. 11 and FIGS. 5 to 10 as appropriate. FIG. 11 is a longitudinal sectional view showing the configuration and operation of the open handle, where (a) shows a closed state, (b) shows the handle open operation in progress, (c) shows the handle open operation completed, The closed state in FIG. 11 (a) shows the same state as in FIG. 7 to FIG. 10 (a).

  The open handle 41 has a substantially L-shaped cross section as shown in FIGS. 7, 10, and 11 and extends in the left-right direction, and is a handle support shaft provided near the front ends of the left and right support rails 37. 42 is pivotally supported around 42. The open handle 41 includes a handle operating portion 49 provided to extend downward from the handle support shaft 42 and a reinforcing portion 50 provided to extend rearward from the handle support shaft 42 perpendicular to the handle operation portion 49. I have. When opening the vegetable storage chamber 4, the open handle 41 is rotated about the handle support shaft 42 toward the front side by inserting a finger behind the handle operating portion 49 and under the reinforcing portion 50 and pulling it forward. To do. Since the open handle 41 has a substantially L-shaped cross section, the second moment of the cross section is large and the bending strength is large compared to a simple plate shape, and the rear side of the handle operating portion 49 and below the reinforcing portion 50. There is enough space for inserting fingers. Furthermore, since the rear lower end of the handle operation part 49 is provided with a handle operation protrusion 60 that protrudes rearward, when inserting a finger behind the handle operation part 49 and pulling it forward, the fingertip is placed on the handle operation protrusion 60. It is easy to operate because it does not slip and slip. Also, since the open handle 41 is configured to insert fingers from below, the space for inserting fingers is configured downward, so that dirt such as food debris is less likely to accumulate, which is suitable for keeping clean. It is.

  Furthermore, as shown in FIG. 11, the center of gravity 51 of the open handle 41 is shaped to be slightly forward and lower than the handle support shaft 42, so that if the user releases the hand after the open operation, the open handle 41 Reference numeral 41 denotes the state at the closed position shown in FIG. 11A, that is, the handle operating portion 49 is rotated and returned in the direction in which it faces downward. Therefore, the opening handle 41 does not require a biasing means such as a special return spring and can be realized with a simple configuration.

  Further, if the opening handle 41 is made of an aluminum extrusion material or a drawing material, the rigidity is high, so that it is not deformed when the opening handle 41 is operated, and a stable opening operation can be performed.

  Of the front side of the vegetable room base 32, the rear side of the handle operating portion 49 of the open handle 41 is a bottom side front wall 52 extending toward the reinforcing portion 50, close to the handle operating portion 49 and upward. Yes. In the vicinity of the center of the bottom side front wall 52 in the left-right direction, a handle portion 53 that is recessed rearward is provided, so that a sufficient gap is provided between the handle operation portion 49 of the open handle 41 and fingers can be inserted. The opening handle 41 is easy to operate. When the user visually recognizes the handle portion 53 during the opening operation, it can be guided to insert a finger naturally in the center of the opening handle 41, so that the opening force during the subsequent opening operation is near the center of the opening handle 41. It is easy to start and the right and left balance can be taken, so the opening operation is stable.

  Handle arms 43 extending left and right along the side wall of the inner box 7b facing the handle operation portion 49 with respect to the handle support shaft 42 and extending rearward and upward are provided on the left and right ends of the open handle 41, Rotate around the handle support shaft 42 together with the open handle 41. The distance between the left and right handle arms 43 is substantially equal to the entire width of the vegetable storage chamber 4, and the handle arms 43 are provided close to the inside of the inner box 7b.

  In the vicinity of the extended end of the handle arm 43, symmetrically toward the left and right outer sides from the left and right handle arms 43, around a rotation axis parallel to the handle support shaft 42 in a direction approaching the inner wall of the inner box 7b. A cam roller 44 that is pivotally supported is provided. When the opening handle 41 is rotated in the opening direction, the cam roller 44 is rotated around the handle support shaft 42 together with the opening handle 41, and when the handle operating portion 49 is rotated forward, the cam roller 44 is rotated rearward. is there.

  As shown in FIG. 9B and FIG. 11, a pair of cam plates 54 projecting inward are provided symmetrically on the left and right side walls of the inner box 7 b, and on the front side of the cam plate 54 The cam surface 55 is formed of a curved surface provided so as to be closer to the front as it is closer to the lower side. The cam surface 55 is arranged so that the opening force is applied to the cam roller 44 when the opening handle 41 is operated and opened when the vegetable storage chamber 4 is closed. As shown in FIG. 11A, the cam roller 44 is disposed so as to abut on the vicinity of the upper end of the cam surface 55 when the vegetable storage chamber 4 is closed.

  The lower surface of the support rail 37 is a mounting surface 56 that is mounted on the first support roller 39a. In the closed state shown in FIG. 11A among the mounting surfaces 56, the X1 range provided before and after the first support roller 39a is a pull-in surface that is an inclined surface inclined downward toward the rear. When the weight of the vegetable storage chamber 4 acts on the pull-in surface, the vegetable storage chamber 4 has a so-called “drop” shape that generates a component force that moves the vegetable storage chamber 4 to the right, that is, in the closing direction. That is, when the vegetable storage chamber 4 is closed, if the opening amount becomes X1 or less, the first support roller 39a comes into contact with the pull-in surface of the “drop” shape, so that the component force in the closing direction is generated by its own weight. This has the effect of closing automatically.

  The horizontal X2 range is behind the X1 range. Before and after the “drop” that is an inclined surface, not only the support rail 37 but the whole vegetable storage chamber 4 moves up and down by h in the height direction, so the height h has a limit, for example, about 2 mm. Further, as shown in FIG. 11 (a), the first support roller 39a is disposed in the vicinity of the front end of the drawing surface with the vegetable storage chamber 4 closed, so that the vegetable storage chamber 4 is further closed in the closing direction. Because it is energized, there is an effect that the closing is ensured.

  On the other hand, when the vegetable storage chamber 4 is opened, in addition to the rolling frictional resistance of the first support roller 39a, the second support roller 39b, and the guide roller 46 due to the weight of the vegetable storage chamber 4, when opening the vegetable storage chamber 4, Since the force in the closing direction due to “drop” is applied, the opening force increases. In the present embodiment, as will be described below, the opening force can be reduced by the action of the opening handle 41.

  FIG. 11B shows a state in which the opening handle 41 is operated to start opening the vegetable storage chamber 4. When the user inserts a fingertip behind the handle operating portion 49 and pulls it while applying a force P1 forward, the open handle 41 rotates to the front side and rotates clockwise around the handle support shaft 42 in the illustrated clockwise direction. It is rotated by an angle θ1.

  The handle arm 43 together with the open handle 41 and the cam roller 44 provided at the tip of the handle arm 43 rotate together. As the handle arm 43 rotates, the cam roller 44 moves downward along the cam surface 55. Since the cam surface 55 is provided so as to be closer to the front as it is closer to the lower side, the cam roller 44 is also moved forward by b1, and the handle support shaft 42 is moved forward.

  Since the handle support shaft 42 is provided on the left and right support rails 37, 37, the support rail 37 is also moved forward by u1, and as a result, the whole vegetable storage chamber 4 is opened by u1. Here, if the amount of movement of the lower end of the handle operating portion 49 is s1, the length of the handle operating portion 49, the length of the handle arm 43, the position of the cam roller 44, and the cam surface 55 are set so that s1> u1. The curved surface shape is appropriately determined. The first support roller 39a is within the X1 range of the mounting surface 56 and generates a component force in the closing direction. If the finger is removed from the open handle 41 in the state of FIG. Is closed, and the closed state shown in FIG.

  FIG. 11C shows a state where the opening operation of the vegetable storage chamber 4 by the operation of the opening handle 41 is completed. When the user continues the operation of pulling further forward while applying the force P2 to the handle operating portion 49, the open handle 41 is further rotated to the maximum rotation angle clockwise around the handle support shaft 42 in the figure. The opening handle 41 is configured to turn to an angle θ2 and abut against a stopper (not shown) so that the opening handle 41 does not rotate beyond the angle θ2. The position of the cam roller 44 moves further downward along the cam surface 55 and reaches the vicinity of the lowermost end of the cam surface 55. The cam roller 44 moves forward up to u2, and further moves the handle support shaft 42 forward to open the whole vegetable storage chamber 4 by u2. Here, if the movement amount of the lower end of the handle operating portion 49 is s2, the curved surface shape of the cam surface 55 is appropriately determined so that s2> u2.

  Here, the first support roller 39a is located in the vicinity of the boundary between the X1 range, which is an inclined surface provided on the mounting surface 56 on the lower surface of the support rail 37, and the horizontal X2 range. Therefore, when the vegetable storage chamber 4 is further pulled forward than the position shown in FIG. 11C, the first support roller 39a is in contact with the horizontal X2 range of the placement surface 56, so “drop”. The opening operation of the vegetable storage chamber 4 can be performed with a slight force without causing a closing force.

  Next, in order to open the vegetable storage chamber 4 including the operation forces P1 and P2 for pulling the handle operating portion 49 of the opening handle 41 forward to open the vegetable storage chamber 4 and the closing force due to “drop”. The relationship between the opening forces Q1 and Q2 required for the above will be described. In other words, the opening forces Q1 and Q2 are forces that are required when the open handle 41 is not used or when the vegetable storage chamber 4 is opened forward by applying a force to a portion other than the open handle 41. In this description, the frictional force is not considered for simplicity.

  As described above, when the opening handle 41 is rotated by the angles θ1 and θ2 as shown in FIGS. 11B and 11C from the closed position shown in FIG. Moves s1 and s2 forward with the force P1 and P2, and the vegetable storage chamber 4 moves u1 and u2 forward. At this time, the position of the cam roller 44 and the cam surface are in a relationship of s1> u1 and s2> u2. 55 curved surface shapes are formed.

  Here, a general “principal principle” will be described. The distance from the fulcrum that is the rotation support shaft to the force point is z1, the distance from the fulcrum to the action point is z2, the force applied to the force point is W1, and the force is applied to the action point. Assuming that the force is W2, it is well known that there is a relationship of z1 × W1 = z2 × W2. Here, if the lever is rotated around the fulcrum by the force applied to the force point, and the force point and the action point move around the fulcrum, the distance z1 from the fulcrum to the force point and the distance from the fulcrum to the action point. The ratio with z2 is equal to the ratio between the moving amount e1 of the power point and the moving amount e2 of the action point. Therefore, the relationship of z1 × e1 = z2 × e2 can be rewritten as the relationship of e1 × W1 = e2 × W2.

  Based on this lever principle, the relationship of s1 × P1 = u1 × Q1 in FIG. 11B and s2 × P2 = u2 × Q2 in FIG. 11C is obtained. Here, since the relationship of s1> u1 and s2> u2 is established, the relationship of P1 <Q1, P2 <Q2 is obtained, and the operation forces P1, P2 for opening the vegetable storage chamber 4 are: Since the opening force Q1 and Q2 of the vegetable storage chamber 4 is smaller, the vegetable storage chamber 4 can be opened with a small force by operating the opening handle 41. Here, since the ratio of the operating force P1 and the opening force Q1 of the vegetable storage chamber 4 is equal to the ratio of s1 and u1, as an example, the position of the cam roller 44 is s1 = 2 × u1, s2 = 2 × u2. If the curved shape of the cam surface 55 is configured, the vegetable storage chamber 4 can be opened by the operation force P1, P2 of 1/2 of the opening force Q1, Q2 by the action of the opening handle 41.

  That is, when the vegetable storage chamber 4 is opened from the closed position by the action of the open handle 41, the movement amount of the handle operating portion 49 is larger than the movement amount of the handle support shaft 42 or the movement amount of the vegetable storage chamber 4. By configuring, the open handle 41 acts according to the principle of leverage, and the opening operation force applied to the handle operation unit 49 by the user can be reduced rather than the opening force of the vegetable storage chamber 4, so that the refrigerator is easy to open and easy to use. Can provide.

  Further, as an example, if the curved shape of the cam surface 55 is configured so that the rotation angle of the opening handle 41 to θ2 and the amount of movement of the vegetable storage chamber 4 to b2 are proportional to each other, Since the opening amount of the vegetable storage chamber 4 is proportional to the rotation angle of the opening handle 41 when the user operates the opening handle 41, the opening operation feels natural and is not uncomfortable.

  As described above, in the “drop” range x1, a pulling force is generated by the slope, so that the operating force at the time of opening increases by that amount, but the opening operating force can be reduced by the action of the opening handle 41. . Here, in particular, if the opening amount b2 of the vegetable storage chamber 4 by the operation of the open handle 41 and the drop range x1 are set as u2> x1, the operation force P1, P2 is reduced in the drop range A by the operation of the open handle 41. Therefore, the opening force can be reduced by the action of the opening handle 41 in spite of “dropping”, which is convenient and convenient.

  Here, as described with reference to FIGS. 8 and 9, the open handle 41 is provided substantially equal to the entire width of the vegetable storage chamber 4, and the handle arm 43, the cam roller 44, and the cam surface 55 are symmetrically arranged on the inner box 7b. It is provided inside the left and right sides. Further, since the opening handle 41 is made of, for example, aluminum and has sufficient rigidity, when the user operates the opening handle 41, the opening handle 41 rotates around the handle support shaft 42 without bending, and the opening handle 41 is opened. 41 The left and right handle arms 43 and cam rollers 44 are rotated.

  Since the cam plate 54 is also provided symmetrically, when the vegetable storage chamber 4 is opened by b2 by the action of the opening handle 41 as shown in FIG. Open b2 on both sides. In other words, the vegetable storage chamber 4 is pulled out by the action of the open handle 41 while keeping parallel to the front. Therefore, even when the width of the vegetable storage chamber 4 is expanded, the food storage state inside the vegetable storage chamber 4 is uneven, or the opening handle 41 is operated at a position shifted from the left and right center of the opening handle 41. However, since the vegetable storage room 4 is pulled out in parallel, the operation is stable, and a convenient and highly reliable refrigerator can be provided.

  Since the open handle 41 is arranged in the vicinity of the lower end of the vegetable storage chamber 4 placed on the heat insulating partition wall 8, the open handle 41 is located immediately above the upper surface of the heat insulating partition wall 8, and its height from the floor surface. Is, for example, about 70 cm, which is lower than the line of sight, and is easy to open because it is arranged at a height where it is easy to put a finger on the opening handle 41 by extending the arm forward and downward.

  Furthermore, since the door opening forces P1 and P2 when the opening handle 41 is opened forward are applied to the vicinity of the bottom of the vegetable storage chamber 4, even if the food in the vegetable storage chamber 4 is small and light, for example, the upper end suddenly moves forward. The phenomenon that the vegetable storage chamber 4 falls to the front and the rear part floats and rattles due to the moment that is generated when pulling is not generated. Therefore, there is an effect that the opening operation by the opening handle 41 is stabilized.

  Furthermore, when opening the vegetable storage chamber 4 by operating the open handle 41, the user moves the tip of the open handle operating portion 49 forward from the closed state in FIG. 11 (a) to the state shown in FIG. 11 (c). Since the vegetable storage chamber 4 has an initial speed toward the front in the state of FIG. 11 (c) and the vegetable storage chamber 4 is moving in a parallel state in the state of FIG. 11 (c), the vegetable storage chamber 4 is moving in parallel. It has kinetic energy to do. In addition, the vegetable storage chamber 4 is rotated and supported in the front-rear direction by the first support roller 39a, the second support roller 39b, and the guide roller 46. Therefore, the vegetable storage chamber 4 has a high degree of straightness and therefore opens without tilting left and right. Can provide a refrigerator that is stable, easy to use and reliable.

  A second embodiment will be described with reference to FIG. FIG. 12 is a side view showing the support rail 37, the first support roller 39a, and the second support roller 39b during the opening operation of the vegetable storage chamber 4. The difference from the first embodiment is that “drop” The slope of the X1 range provided for the two-step inclined surface having two different angles, the first slope 57 of the slope angle φ1 provided in the x3 range, and the first slope 57 And a second inclined surface 58 having an inclination angle φ2 provided in the x4 range continuous to the rear, and φ1> φ2 and x3 <x4. FIG. 12A shows a closed state as in FIG. 11A, FIG. 12B shows that the first support roller 39a is in contact with the first inclined surface 57, and FIG. The support roller 39a is in contact with the second inclined surface 58, and in FIG. 12D, the first support roller 39a is in contact with the horizontal plane x2 as in FIG. 11C.

  In the second embodiment, in the closed state shown in FIG. 12A, the first support roller 39a is a support roller on the lower surface of the support rail 37 on the first inclined surface (x3 range) having a large inclination angle φ1. Since it is in contact with the mounting surface 40, the component force in the closing direction is large, and a sufficient closing force is obtained, so that the degree of sealing when closed is high. On the other hand, since there is a limit to the height “h” of “drop” as described above, if the entire X1 range is configured with a large inclination angle φ1, the height h becomes excessive. Furthermore, the closing force becomes excessive and closes more rapidly than necessary when the vegetable storage chamber 4 is closed.

  Therefore, only the vicinity of the closed state in which the degree of sealing is desired is set to the x3 range provided with the first slope 57 having the large inclination angle φ1, and the x4 range behind the x3 range is the second inclined surface having the small inclination angle φ2. 58 is preferable because the height h can be kept within a predetermined range while ensuring the X1 range in which the closing effect due to “drop” occurs, and the closing force does not become excessive. Furthermore, although the opening force is large in the x3 range at the beginning of opening, the operating force of the handle operating portion 49 is small due to the lever effect of the opening handle 41, and in the x4 range where the inclination angle φ2 is small, closing is performed by dropping. Since the force is reduced, the operating force of the opening handle 41 can be further reduced, so that it is possible to provide the vegetable storage room 4 that is securely closed and has a reduced opening operating force.

  According to the present embodiment, the support rails 37 are provided at the left and right ends of the vegetable compartment base 32, and are formed in the gap generated between the vicinity of the bottom of the vegetable compartment container 31 and the inner box 7b by the taper of the vegetable compartment container 31. Since it arrange | positions, in order not to reduce the volume of the vegetable compartment container 31 in order to arrange | position the support rail 37, there exists an effect that the volume of the vegetable compartment container 31 can be maximized.

  According to the present embodiment, since the movement amount of the handle operating portion 49 of the opening handle 41 during the opening operation is made larger than the movement amount of the vegetable storage chamber 4, the opening handle 41 acts in accordance with the lever principle, Since the opening operation force applied by the user to the handle operation unit 49 can be reduced more than the opening force of the chamber 4, it is possible to provide a refrigerator that is easy to open and easy to use.

  Furthermore, according to the present embodiment, the opening amount u2 of the vegetable storage chamber 4 due to the operation of the opening handle 41 is set larger than the dropping range x1 due to its own weight using an inclined surface. There is an effect that can be reduced.

  Furthermore, according to the present embodiment, the support rails 37 provided along the front-rear direction on the left and right sides of the vegetable compartment base 32 of the vegetable storage compartment 4 are pivotally supported around the pivot axis. Since it is supported by the first support roller 39a, the second support roller 39b and the guide roller 46 so as to be movable in the front-rear direction, it can be opened and closed with a slight force, and the vegetable storage chamber 4 is moved in the front-rear direction to open and close It is easy to open and close because it has good straightness when operated and is not easily tilted to the left or right.

  Furthermore, according to this embodiment, when the vegetable storage chamber 4 is closed, the magnet packing 35 at the upper end of the front cover 34 is attracted to the shelf front edge portion 48 having magnetism provided on the upper surface shelf 47. By closing the gap and sealing the inside of the vegetable compartment container 31 to obtain airtightness, there is an effect of maintaining the freshness of the stored vegetables while maintaining the inside of the vegetable compartment container 31 at high humidity.

  Still further, according to the present embodiment, in the vicinity of the distal ends of the handle arms 43 provided at the left and right ends of the open handle 41 pivotally supported in the front-rear direction, the direction close to the inner side wall of the inner box 7b. Is provided with a cam roller 44 and rotates integrally with the opening handle 41. By operating the opening handle 41 by moving in contact with the cam surface 55 that is a curved surface provided on the front side of the cam plate 54 that protrudes inwardly symmetrically on the inner left and right side walls of the inner box 7b. Since the vegetable storage room 4 moves to the front in conjunction with the operation of pulling to the front side, the vegetable storage room 4 that is easy to open and has good operability can be provided.

  Furthermore, according to the present embodiment, the open handle 41 has a substantially L-shaped cross section, so that the second moment of section is large and the bending strength is large compared to a simple plate shape, and the handle operating portion 49 There is an effect that a sufficient space for inserting a finger can be obtained at the rear side and below the reinforcing portion 50.

  Furthermore, according to the present embodiment, since the opening handle 41 is made of an aluminum extrusion material or a drawing material, the opening handle 41 has high rigidity and is not deformed when the opening handle 41 is operated, so that a stable opening operation can be performed. Is preferred.

  Furthermore, according to the present embodiment, the center of gravity 51 of the opening handle 41 is shaped so as to be slightly in front of and below the handle support shaft 42, so that if the user releases his hand after the opening operation, the opening handle 41 will open. The handle 41 is rotated and returned in a direction in which the handle operation unit 49 faces downward. Therefore, the opening handle 41 does not require a biasing means such as a special return spring, and there is an effect that a simple configuration can be realized.

  Furthermore, according to the present embodiment, the width of the open handle 41 is substantially equal to the entire width of the vegetable storage chamber 4 and is made of aluminum and has sufficient rigidity. Therefore, when the user operates the open handle 41, The open handle 41 rotates around the handle support shaft 42 without bending. The handle arm 43 and the cam roller 44 on the left and right ends of the open handle 41 are rotated so that the vegetable storage chamber 4 is opened synchronously by the action of the cam roller 44 and the cam surface 55 so that the width of the vegetable storage chamber 4 is increased. Even so, the vegetable storage room 4 is pulled out in parallel, and the operation is stable, easy to use, and a highly reliable refrigerator can be provided.

  The open handle 41 is located immediately above the upper surface of the heat insulating partition wall 8, and the height from the floor surface is, for example, about 70 cm, which is lower than the line of sight. It is easy to open because it is placed at a height. Furthermore, since the door opening forces P1 and P2 when opening the opening handle 41 forward are applied to the vicinity of the bottom surface of the vegetable storage chamber 4, the opening operation by the opening handle 41 is effective.

  Furthermore, according to the present embodiment, when the vegetable storage chamber 4 is opened by operating the opening handle 41, the vegetable storage chamber 4 has an initial speed directed forward, and the vegetable storage chamber 4 is kept parallel. Therefore, it has kinetic energy that tries to move straight forward due to inertia. In addition, the vegetable storage chamber 4 is rotated and supported in the front-rear direction by the first support roller 39a, the second support roller 39b, and the guide roller 46. Therefore, the vegetable storage chamber 4 has a high degree of straightness and therefore opens without tilting left and right. Can provide a refrigerator that is stable, easy to use and reliable.

  According to yet another embodiment, the inclined surface for “drop” is continuous with the first inclined surface 57 having a large inclination angle near the front and the first inclined surface 57 behind the first inclined surface 57. In addition, a two-step inclined surface provided with a second inclined surface 58 having an inclination angle smaller than that of the first inclined surface 57 is used. By increasing the tilt angle only in the vicinity of the closed state where you want to increase the degree of sealing and decreasing the tilt angle behind it, you can secure a range where the closing effect will be caused by `` dropping '' and change the height of `` dropping '' There is an effect that it can be within a predetermined range.

1 Refrigerator body 2 Refrigerated room (refrigerated temperature zone)
3 Freezing room (freezing temperature room)
4 Vegetable storage room 5 Hinge 6 Rotating squeeze 6a Rotating squeeze fulcrum 7 Insulating box 7a Inner box 7b Outer box 8 Insulating partition walls 9a, 9b Door pocket 10 Shelf 11 Storage containers 12a, 12b Storage container 13 Door packing 14 Cooler 15 Cooling Refrigerator compartment blower 17 Refrigeration compartment air duct 18 Freezer compartment air duct 19 Cold air control means 20 Air outlet (refrigeration room)
21 Air outlet (freezer)
22 Freezer return port 23 Defrost heater 24 Upper cover 25 樋 26 Drain pipe 27 Machine room 28 Evaporating dish 29 Compressor 30 Control board 31 Vegetable room container 32 Vegetable room base 33 Container body 34 Front cover 35 Magnet packing 36 Bottom packing 37 Support rail 38 Bottom glass 39a First support roller 39b Second support roller 40 Support roller mounting surface 41 Open handle 42 Handle support shaft 43 Handle arm 44 Cam roller 45 Guide groove 46 Guide roller 47 Top shelf 48 Front shelf edge 49 Handle operation portion 50 Reinforcement portion 51 Center of gravity position 52 Bottom wall front wall 53 Handle portion 54 Cam plate 55 Cam surface 56 Placement surface 57 First slope 58 Second slope 59 Control panel 60 Handle operation protrusion

Claims (3)

A storage room with an open front;
In the storage chamber, a storage container supported so as to be movable back and forth so that it is an open position at the front and a closed position at the rear,
A pair of support rails provided extending in the front-rear direction on the left and right side surfaces of the storage container;
A pair of guide grooves that are provided to extend in the front-rear direction on the left and right inner side surfaces of the storage chamber, and the sliding portions of the support rail are fitted and rolled,
A pair of first support rollers arranged to support the lower surface of the support rail when the storage container is closed and move the storage container back and forth while rolling;
A pair of second support rollers arranged to support the lower surface of the support rail when the storage container is opened and move the storage container back and forth while rolling,
The pair of second support rollers are positioned forward of the front end of the storage container when the storage container is closed. A storage room with an open front;
In the storage chamber, a storage container supported so as to be movable back and forth so that it is an open position at the front and a closed position at the rear,
A pair of support rails provided extending in the front-rear direction on the left and right side surfaces of the storage container;
A pair of guide grooves extending in the front-rear direction provided on the left and right inner side surfaces of the storage chamber;
A guide roller that is rotatably supported around a rotation shaft provided in the left-right direction behind the support rail, and moves forward and backward through the storage container while rolling while fitting into the guide groove;
A pair of first support rollers arranged to support the lower front edge of the support rail when the storage container is closed and to move the storage container back and forth while rolling;
When the storage container is opened, the lower surface of the support rail is supported, and the storage container is arranged to move back and forth while rolling, between the pair of first support rollers and the front end of the storage chamber, A refrigerator comprising a pair of second support rollers. 3. The refrigerator according to claim 1, wherein the first support roller and the second support roller are both rotatably and detachably provided on a bottom surface of the storage chamber. 4. .

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