JP2009115370A - Rail member and refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rail member of high quality and high usability with small operating force even when load is added, in a refrigerator including a drawer device. <P>SOLUTION: In this rail member 31, the inside diameter of a ball bearing as a rotational supporting member 31d of the rail member 31 is classified into ranks by each dimension, the rank is selected according to the dimension of each material lot of a fixed rail 31a, a moving rail 31b, and an intermediate traveling rail 31c, which constitute the rail member 31 to assemble the rail member, whereby sliding performance between the fixed rail 31a and the intermediate traveling rail 31c and between the intermediate traveling rail 31c and the moving rail 31b can be improved, and even when load is applied to a container, the sliding performance is excellent, so that the moving rail and the intermediate traveling rail are smoothly moved to improve the usability. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with a drawer device, and particularly to the configuration of a rail member for drawer.

  In recent years, as the size of refrigerators has increased, the amount of storage tends to increase, and in order to increase the amount of storage and improve usability, those equipped with a drawer device have become mainstream (for example, see Patent Document 1). ).

  Hereinafter, a refrigerator provided with the above-described conventional drawer device will be described with reference to the drawings.

  FIG. 5 is a perspective view of a drawer-type door of a conventional refrigerator. FIG. 6 is a cross-sectional view of a main part of a conventional refrigerator drawer device. FIG. 7 is a cross-sectional view of a conventional refrigerator drawer device.

  The refrigerator drawer device 17 of the prior art includes an openable / closable door 1 on the front surface of the refrigerator main body, a frame 2 having one end fixed to the left and right sides of the door, a connecting frame 16 connecting the rear ends, and a rear end of the frame 2. Mounted on the attached movable roller 3, the frame 2 fixed and attached to the inner box side wall 4, the fixed rail 5 for slidingly supporting the movable roller 3, the fixed roller 6, the frame 2, and the connecting frame 16. It is composed of a case 15 in the cabinet. Further, the frame side surface 9 is a flat surface, and the groove portion 12 of the fixed rail 5 is also a flat surface.

  Then, the movable roller 3 attached to the rear end of the frame 2 fixed in advance to the left and right sides of the door back surface of the door 1 is inserted into the groove 12 of the fixed rail 5 attached in advance to the refrigerator main body, and the bottom surface of the frame 2 and the fixed roller 6 is assembled so as to slide in contact.

In the above configuration, when the door 1 is opened and closed, the frame 2 having one end fixed to the door 1, the connecting frame 16 connected to the frame 2, the case 15 placed on these, and the movable roller 3 are fixed rails. 5 and the fixed roller 6 are allowed to slide in the front-rear direction synchronized with the door 1.
Japanese Utility Model Publication No. 60-27913

  However, in the conventional refrigerator, since the frame 2 fixed in advance on the left and right sides of the door back side of the door 1 is used by being incorporated in the fixed rail 5 attached in advance to the refrigerator main body side, the variation in mounting of the frame 2 or the fixed rail 5 and assembly In consideration of the characteristics, a certain amount of clearance is set between the rail and the roller in the assembled state. Due to this clearance, left and right rattling occurs when the door 1 is opened and closed, and there is a problem that the operability is impaired and the quality during operation is not improved.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an easy-to-use drawer rail member that has a high quality and a small operation force even when a load is applied.

  In order to solve the above-described conventional problems, the rail member of the present invention includes a fixed rail, an intermediate traveling rail, and a moving rail, and the inner diameter of a ball bearing that is a rotation support member of the rail member is set for each predetermined dimension. The rails are divided into ranks, and the ranks are selected and assembled according to the dimensions of each material lot of the rail members.

  This makes it possible to assemble in a state where the clearance of the sliding part of the rail member is stable, improve the slidability between the fixed rail and the intermediate traveling rail, and between the intermediate traveling rail and the moving rail, and pull out with high quality. The slidability is excellent even when a load is applied to the container, and the moving rail and the intermediate traveling rail can move smoothly.

  The rail member of the present invention can smoothly open and close the drawer even when a load is applied to the container, and can constitute a high-quality, easy-to-use and highly reliable drawer storage.

  The invention according to claim 1 has a rail member composed of a fixed rail, an intermediate traveling rail, and a moving rail, and ranks the inner diameters of the ball bearings, which are rotation support members of the rail members, for each predetermined dimension. In addition, by selecting and assembling the rank according to the dimensions of each rail member material lot, the slidability between the fixed rail and the intermediate traveling rail, between the intermediate traveling rail and the moving rail is improved, and high A high-quality drawer can be configured, and even when a load is applied to the container, it has excellent slidability, and the moving rail and the intermediate traveling rail move smoothly, so the operation force of the drawer can be reduced. Improvements can be made.

  The invention according to claim 2 is the invention according to claim 1, wherein the rail member is provided in the refrigerator so that the drawer can be opened and closed smoothly even when a load is applied to the container. It is possible to provide a refrigerator that constitutes an easy-to-use and highly reliable drawer storage.

  Hereinafter, an embodiment of a refrigerator provided with rail members according to the present invention will be described with reference to the drawings. Note that the same reference numerals are given to the same components as those of the above-described embodiment, and detailed description thereof is omitted. Further, the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is an exploded view of the refrigerator rail member of the same embodiment, and FIG. It is sectional drawing of the refrigerator rail member of embodiment.

  1 to 4, a heat insulating box 19 of the refrigerator 18 is filled with a foam heat insulating material 22 between an inner box 20 and an outer box 21, has a front opening 19a, and partition walls 23a and 23b. , 26 form a refrigerator compartment 24, a switching chamber 25, a vegetable compartment 27, and a freezing compartment 28 from above.

  Moreover, the both sides | surfaces of the partition wall 26 have the opening part 26a, and the partition wall 26 is filled with the foam heat insulating material 22 similarly to the heat insulation box 19. FIG.

  In addition, the vegetable compartment 27 arranged at the upper part of the partition wall 26 has a cooling temperature of about 5 ° C., and the freezer compartment 28 arranged at the lower part has a cooling temperature of about −20 ° C. Is set to

  The vegetable compartment 27 and the freezer compartment 28 are respectively closed at the front opening 19a by a vegetable compartment door 29 and a freezer compartment door 30, and the vegetable compartment 27, the vegetable compartment door 29, the freezer compartment 28, and the freezer compartment door 30 are respectively. By being connected by the rail member 31, it can be drawn and slid in the front-rear direction.

  The rail member 31 includes a fixed rail 31a, a movable rail 31b, an intermediate traveling rail 31c provided between the fixed rail 31a and the movable rail 31b, and an engagement between the intermediate traveling rail 31c, the fixed rail 31a, and the movable rail 31b. A plurality of rotation support members 31d such as bearings for supporting the rotation support and a frame 31f of the rotation support member for holding the rotation support member 31d. The lubrication has lubricity even at low temperatures and has excellent slidability of the metal member. The agent 31e is applied to a sliding portion in a range in which a plurality of rotation support members 31d such as bearings move.

  The fixed rail 31a is fixed to both side walls of the inner box 20 with the fixed rail 31a, the moving rail 31b, the intermediate traveling rail 31c, the rotation support member 31d, the frame 31f of the rotation support member, and the lubricant 31e being incorporated in advance. Then, the respective storage chambers and the storage chamber doors are connected by fixing the moving rails 31b to the respective storage chamber doors.

  With the above configuration, the intermediate traveling rail 31c disposed between the fixed rail 31a, the movable rail 31b, the rotation support member 31d, the frame 31f of the rotation support member, and the lubricant 31e between the fixed rail 31a and the movement rail 31b. The rail member 31 consisting of is incorporated in advance.

  Here, in order to improve the slidability of the rail member 31, the inner diameter of the ball bearing which is the rotation support member 31d of the rail member 31 is ranked in advance for each predetermined dimension, and the fixed rail constituting the rail member 31 is provided. Ranks are selected in accordance with the dimensions of each material lot of 31a, moving rail 31b, and intermediate running rail 31c, and the clearance between the rails is optimized.

  Further, the left and right rail members 31 fixed to the both side wall surfaces of the inner box 20 have a symmetrical shape and exhibit better sliding performance by being provided on both the left and right sides.

  The container 32 of each storage chamber supports the moving rail 31b of the rail member 31 after fixing the rail member 31 to the inner box 20, and moves back and forth together with the moving rail 31b in synchronization with pulling out each storage chamber door in the front-rear direction. Further, the container 32 is detachable upward when each storage chamber door is fully opened.

  Further, the fixed rails 31a of the pair of left and right rail members 31 are restricted in fixed positions via the inner box 20 by the connecting members 33 which are position restricting means.

  The connecting member 33 has a horizontal portion 33a and an H-shaped section having a vertical portion 33b at both ends of the horizontal portion 33a. The horizontal portion 33a is fixed inside the partition wall 26 between the upper partition wall 26b and the lower partition wall 26c. The vertical portion 33b protrudes from the opening portion 26a of the partition wall 26 to the outside of the partition wall 26 and is disposed on the side of the inner box 20 filled with the foam heat insulating material 22, so that the connecting member 33 is not exposed to each storage chamber. It has become.

  Further, both ends of the vertical portion 33b reach the vicinity of the center in the vertical direction of the vegetable compartment 27 and the freezing compartment 28, and the fixed rails 31a of the left and right rail members 31 in each storage chamber are fixed portions 33c of the vertical portion 33b. The fixed portion 33c of at least the vertical portion 33b is in contact with the surface of the inner box 20 on the side filled with the foam heat insulating material 22. Further, the left and right vertical portions 33b are provided with holes 33d.

  When the connecting member 33 becomes large, it is divided into a plurality of front and rear parts, each having a horizontal portion 33a, a vertical portion 33b, and a fixing portion 33c, and if necessary provided with a hole 33d, the connecting member 33 is integrated. The same effect as that obtained can be obtained.

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

  First, when each storage chamber door is pulled out, the moving rail 31b, the intermediate traveling rail 31c, the intermediate traveling rail 31c, and the fixed rail 31a of the rail member 31 provided on both sides of each storage chamber rotate the rotation support member 31d. And the lubricant 31e applied to the moving range of the rotation support member 31d smoothly slides forward.

  Accordingly, the container 32 supported by the rail member 31 is also pulled out to the front, and the object to be cooled stored in the container 32 can be taken out and a new object to be cooled can be stored.

  As described above, in the present embodiment, when the rail member 31 in which the fixed rail 31a, the moving rail 31b, and the intermediate traveling rail 31c are incorporated in advance is fixed to the both side wall surfaces of the inner box 20, it is attached to the refrigerator 18. The generated stress can be avoided, and the slidability between the fixed rail 31a and the intermediate traveling rail 31c and between the intermediate traveling rail 31c and the moving rail 31b can be improved, and a high-quality drawer can be configured.

  These effects are more effective as the allowance for the rail member 31 is larger. Further, even when a load is applied to the container 32 by supporting the fixed rail 31a and the intermediate traveling rail 31c and the moving rail 31b and the intermediate traveling rail 31c with the rotation support member 31d and the lubricant 31e, the moving rail can be smoothly moved. Since 31b and the intermediate | middle running rail can move, the operation force of drawer can be reduced and the usability can be improved.

  In addition, the rail member 31 ranks the inner diameter of the ball bearing, which is the rotation support member 31d of the rail member 31, in order to improve the slidability, and ranks the rail member 31 with a predetermined dimension. Since the rank is selected and assembled according to the size of each material lot of the rail 31b and the intermediate traveling rail 31c, the optimum clearance between the fixed rail 31a and the intermediate traveling rail 31c and between the intermediate traveling rail 31c and the moving rail 31a. Can be secured. For this reason, the slidability can be improved, the slidability is excellent even when a load is applied to the container, and the moving rail and the intermediate traveling rail move smoothly, so that the usability can be improved.

  Further, by restricting the mounting position of the fixed rail 31 a of the rail member 31 by the connecting member 33, the width dimension or the parallelism of the pair of left and right rail members 31 can be maintained as specified, and the connecting member 33 allows the heat insulating box body 19 to be maintained. Both sides of the inner box 20 with the rail member 31 in which the clearance between the fixed rail 31a and the movable rail 31b is set small in advance is suppressed by suppressing a dimensional change due to heat shrinkage at the time of cooling after filling the foam heat insulating material 22 Since the dimensional accuracy between the pair of left and right rail members 31 can be kept high as a specification to be fixed to the wall surface, the operability at the time of pulling out the container 32 can be enhanced by the connecting member 33 which is a position restricting means. Between the intermediate traveling rail 31c and between the intermediate traveling rail 31c and the moving rail 31b, the rotation support member 31d and the moisture are provided. Since supporting such wear of the sliding portion can be achieved also ensuring operation reliability for a long time is prevented by the agent 31e.

  In addition, by providing the intermediate traveling rail 31c, it is possible to increase the pull-out allowance of the moving rail 31b of the rail member 31, so that it can be pulled out to the inner part of the container 32, and can be overlooked to the inner part of the container 32, Loss due to forgetting to use the object to be cooled in the container 32 can be prevented, and the container 32 can be easily attached to and detached from the rail member 31, so that the usability can be improved.

  In particular, when it is desired to pull out the container 32 of each storage room having a larger depth, the intermediate traveling rail 31c is provided, which is effective for the strength and operability of the rail member 31 when it is pulled out.

  Moreover, since the connecting member 33 that connects the left and right fixed rails 31a is embedded in the foam heat insulating material 22 of the heat insulating box 19, it is possible to prevent condensation and frost formation of the connecting member 33 when the refrigerator 18 is used. Further, since the connecting member 33 does not come into contact with air, the corrosion resistance of the connecting member 33 can be improved, and the rust prevention treatment of the connecting member 33 can be reduced, so that the cost can be reduced.

  Further, the presence of the foam heat insulating material 22 around the connecting member 33 can improve the attachment strength of the connecting member 33, and can improve the reliability of position regulation and the attachment strength of the rail member 31.

  Moreover, since the vegetable room 27 and the freezing room 28 which adjoined up and down were each provided with the rail member 31, and the fixed rail 31a of each rail member 31 was integrally fixed by the connection member 33, the operativity of several storage chambers is carried out. It can be increased at the same time.

  In addition, since the connecting member 33 has an H-shaped cross section having the vertical portions 33b at both ends, the fixed rail 31a of the rail member 31 of the vegetable compartment 27 and the freezing compartment 28 adjacent to the vertical portion 33b is fixed integrally. By fixing the fixed rails 31a of the plurality of rail members 31 to one connecting member 33, it is possible to reduce the cost by reducing the number of parts.

  Further, since the holes 31c are provided in the vertical portions 31b at both ends of the connecting member 33, heat transfer from the connecting member 33 is suppressed when the temperature zones of the plurality of storage chambers are different, and condensation on the storage chamber side having a high temperature zone is suppressed. And increase in power consumption due to heat leakage can be suppressed.

  In addition, when the fixed rails 31a of the pair of left and right rail members 31 are connected in the front-rear direction by a plurality of connecting members 33, particularly when the rail members 31 are used in a large refrigerator, the connecting member 33 is divided into a plurality of parts. Accordingly, the size of the connecting member 33 can be reduced, so that the cost can be reduced.

  In the present embodiment, the rail member 31 and the container 32 are shared by the vegetables 27 and the freezer compartment 28. However, it is more costly to use materials formed of different materials for each storage compartment depending on the actual storage form. Reduction and improvement in reliability can be achieved.

  In the present embodiment, the vegetable room 27 and the freezing room 28 are described as using the rail member 31, but the present invention can be appropriately applied to a storage room provided with a drawer container. For example, you may use for the switching room 25 located in the upper part of the vegetable compartment 27, the ice making room (not shown) attached to the side of the switching room 25, etc.

  In the present embodiment, the connecting member 33 has a horizontal portion 33a and an H-shaped cross section having the vertical portions 33b at both ends of the horizontal portion 33a, and the rail members 31 of the vegetable compartment 27 and the freezer compartment 28 are fixed integrally. As described above, a connecting member having a U-shaped cross section having vertical portions at both ends may be used for each of the vegetable compartment 27 and the freezing compartment 28. In this case, in a refrigerator in which the vegetable compartment 27 and the freezer compartment 28 are not provided vertically, it is possible to provide an easy-to-use drawer with a small operation force even when a high quality and load with little backlash are applied. In addition, heat transfer from the connecting member is further suppressed when the temperature zones of the plurality of storage chambers are different compared to when a plurality of rail members are fixed to one connecting member, and condensation on the storage chamber side having a high temperature zone is prevented. And increase in power consumption due to heat leakage can be suppressed.

  Note that the fixed rails of the pair of left and right rail members may be connected by a plurality of connecting members. In this case, since the connecting member can be reduced in size by dividing the connecting member into a plurality of parts, the cost can be reduced and the weight can be reduced.

  As described above, the rail member according to the present invention can smoothly open and close the drawer even when a load is applied to the container, and can perform drawer storage with high quality and ease of use. It can also be used for applications such as a drawer device.

Side sectional view of the refrigerator according to Embodiment 1 of the present invention. AA sectional view of FIG. An exploded view of the rail member of the refrigerator of the same embodiment Sectional drawing of the rail member of the refrigerator of the embodiment Perspective view of a conventional drawer drawer door Sectional view of the main part of a conventional refrigerator drawer device Sectional view of a conventional refrigerator drawer device

Explanation of symbols

18 Refrigerator 31 Rail member 31a Fixed rail 31b Moving rail 31c Intermediate traveling rail 31d Rotation support member

Claims (2)

  It has a rail member composed of a fixed rail, an intermediate traveling rail, and a moving rail, and ranks the inner diameters of ball bearings, which are rotation support members of the rail members, for each predetermined dimension, and for each material lot of the rail members A rail member, wherein the rank is selected and assembled according to the dimensions of the rail.   A refrigerator comprising the rail member according to claim 1.

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