JP6091372B2 - Refrigerator drawer device and refrigerator equipped with the same - Google Patents

Description

  The present invention relates to a refrigerator or freezer used for home use or business use, and more particularly to a refrigerator drawer device.

  In the refrigerator, the refrigerator main body is formed of an inner box and an outer box whose front surfaces are open, and a heat insulating material is filled between the inner box and the outer box. The refrigerator body has a partition wall and a storage room having a drawer type door. In the storage room, a case inside is stored so as to be freely inserted and removed. One end (front end) of the left and right frames is attached to the left and right sides of the rear surface of the drawer-type door, and left and right movable rollers are respectively installed on the other end (rear end) of the left and right frames. Further, the rear portions of the left and right frames are connected by a connecting member. The connecting member forms a frame body together with the door and the left and right frames, and has a function of a rear beam. The internal case is placed on the left and right frames and the connecting member.

  On both sides of the inner box, which is the inner wall of the refrigerator body, groove-shaped left and right rails extending in the interior depth direction are respectively installed with the groove-shaped opening facing the inside of the inner box. The left and right movable rollers of the left and right frames are supported and rolled inside the shape.

  In addition, left and right fixed rollers are provided on the left and right side surfaces of the inner box so as to be positioned in front of the left and right rails, and the left and right fixed rollers are slidably supported on the left and right frames, respectively. That is, the door is supported by the left and right fixed rollers and the left and right movable rollers, slides back and forth, and is opened and closed.

  In recent years, refrigerators tend to increase in storage capacity as the size of the refrigerator increases. Therefore, the thing which raised the intensity | strength of the left-right frame which receives the load from a stored thing via a left-right movable roller is proposed. For example, a cross-shaped aperture is formed on the left and right frames, and the aperture around the mounting portion of the left and right movable rollers is a mountain-shaped aperture so as to avoid the mounting portion of the left and right movable rollers (for example, Patent Document 1 and Patent Document 2).

JP-A-11-083302 (FIGS. 1, 3, and 7) Japanese Patent Laid-Open No. 07-260338 (FIGS. 1 and 3)

  In the techniques described in Patent Document 1 and Patent Document 2, the strength of the entire left and right frames can be increased by the cross-shaped diaphragm. However, the aperture around the mounting portion of the left and right movable rollers where the load concentrates is a mountain-shaped aperture so as to avoid the mounting portion of the left and right movable rollers, so the strength could not be increased sufficiently.

  That is, in the state where the door is closed, the case storage item is located between the left and right fixed rollers and the left and right movable rollers. Therefore, the left and right movable rollers are in a state of being placed on the lower surfaces inside the groove shape of the left and right rails, and an upward bending moment is applied to the mounting portion of the left and right movable rollers due to the weight load of the case storage item. Further, when the door is pulled out, the case storage item is positioned in front of the left and right fixed rollers. For this reason, the weight load of the case storage item is applied to the left and right movable rollers arranged at the rear part of the left and right frames (backward from the fulcrum) with the left and right fixed rollers as fulcrums. Then, the left and right movable rollers are pressed against the upper surface inside the groove shape of the left and right rails. That is, when the door is pulled out, a downward bending moment is applied to the mounting portion of the left and right movable rollers due to the weight load of the case storage item. Thus, the weight load of the case storage item is applied to the mounting portions of the left and right movable rollers of the left and right frames in the vertical direction.

  Further, due to a side impact such as hitting a foot with the door pulled out, an external force in the left-right direction is applied to the left and right movable rollers and their attachments when viewed from the front of the refrigerator body.

  Furthermore, in the door removal work or assembly work, the left and right movable rollers and their mounting parts receive external forces from various directions in use, such as external forces from the top and bottom diagonal directions caused by abutment against the left and right rails. It takes.

  The weight load or external force of such a case storage item is concentrated on the left and right movable rollers and their mounting parts, and in particular, the mounting parts of the left and right frames are deformed. There was a possibility that abnormal wear might occur between the left and right movable rollers or the left and right frames and the left and right rails due to the tilt of the movable rollers. In such a case, there is a possibility that the door cannot be opened and closed.

  For this reason, conventionally, screws are used to attach reinforcing materials to the attachment portions of the left and right movable rollers of the left and right frames to increase the strength of the attachment portions of the left and right movable rollers of the left and right frames. However, in this case, the number of parts is increased, and there is a new problem of increasing the manufacturing price due to the cost of parts and mounting work.

  The present invention has been made in order to solve the above-described problem, and can maintain the same strength as when a reinforcing material is used even when an external force is applied to the mounting portion of the left and right movable rollers from various directions. It aims at providing the drawer apparatus for refrigerators, and a refrigerator provided with the same.

The refrigerator drawer device according to the present invention includes a door provided on the front surface of the refrigerator main body so as to be freely drawable, and one end fixed to the rear surface of the door so as to extend in the interior depth direction. A frame in which a bent portion is formed , a movable roller attached to the other end of the frame, a rail that is fixed to the side surface of the inner wall of the refrigerator body and extends in the depth direction of the refrigerator, and supports the movable roller in a freely rolling manner A fixed roller that is fixed to the side surface of the inner wall of the refrigerator main body so as to be positioned on the front side of the rail, and that supports the frame in a slidable manner, and an internal case that is placed on the frame, The mounting portion is formed with a hole through which the mounting screw portion of the movable roller is inserted, and a throttle portion is formed so as to surround at least a part of the mounting portion. Half Jo is formed on, in which the semicircular opening side is disposed so as to face the stepped bending portion.

  Moreover, the refrigerator which concerns on this invention is equipped with the refrigerator main body and the storage chamber provided in the refrigerator main body, and provided the said drawer | drawing-out apparatus for refrigerators in the storage chamber.

In the refrigerator drawer apparatus according to the present invention, the intake mounting portion of the variable dynamic roller frame, so to form a grain Ri portion so as to surround at least a portion of the mounting portion, the mounting portion of the variable dynamic rollers strength can be improved, and even if a force from various directions, can be difficult to deform the mounting portion of the variable dynamic rollers. Therefore, the reinforcing material and the screw for attaching the reinforcing material can be eliminated, the member cost and the number of attachment work steps can be reduced, and the manufacturing cost can be suppressed.

  Moreover, since the refrigerator which concerns on this invention provided the said drawer | drawing-out apparatus for refrigerators, durability improves.

It is a longitudinal cross-sectional view which shows schematic structure of the refrigerator using the drawer apparatus for refrigerators which concerns on Embodiment 1 of this invention. It is the perspective view which looked at the door of the drawer device for refrigerators concerning Embodiment 1 of the present invention from the back side. It is a perspective view of the frame of the door of FIG. It is XX arrow sectional drawing of FIG. It is sectional drawing which shows the comparative example which attached the reinforcing material to the attaching part of the movable roller of the frame of a door. (A) which shows the load direction to the movable roller of the drawer | drawing-out apparatus for refrigerators concerning Embodiment 1 of this invention is a side view, (b) is a YY arrow sectional drawing of (a). It is a side view which shows the attachment part of the movable roller of the frame of the door of the drawer | drawing-out apparatus for refrigerators concerning Embodiment 2 of this invention.

Embodiment 1. FIG.
FIG. 1 is a longitudinal sectional view showing a schematic configuration of a refrigerator using the refrigerator drawer according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the door of the refrigerator drawer according to Embodiment 1 of the present invention as viewed from the back side. FIG. 3 is a perspective view of the door frame of FIG. 4 is a cross-sectional view taken along line XX in FIG.
In the refrigerator according to Embodiment 1 of the present invention, as shown in FIG. 1, the refrigerator main body 1 is formed of an inner box 2 and an outer box 3 whose front surfaces are open, and between the inner box 2 and the outer box 3. The heat insulating material 4 is filled. The refrigerator body 1 has partition walls 5 and 6 and a storage room 8 having a drawer-type door 7 on the front surface. In the storage chamber 8, an internal case 17 is accommodated in a freely removable manner.

  In the refrigerator drawer device according to Embodiment 1 of the present invention, as shown in FIGS. 1 and 2, one end (front end) of the left and right frames 9 having the same configuration is provided on the left and right sides of the back surface of the drawer-type door 7. It is attached. In addition, left and right movable rollers 10 having the same configuration are respectively installed at the other end portions (rear end portions) of the left and right frames 9. Further, the rear portions of the left and right frames 9 are connected by a connecting member 11. The connecting member 11 constitutes a frame body together with the door 7 and the left and right frames 9 and functions as a rear beam. A case 17 is placed on the left and right frames 9 and the connecting member 11. The connecting member 11 can be eliminated by increasing the strength of the left and right frames 9.

  As shown in FIG. 1, groove-shaped left and right rails 12 having the same configuration and extending in the interior depth direction are provided on both side surfaces of the inner box 2 serving as the inner wall of the refrigerator main body 1. Each is installed inward of the box 2. The left and right movable rollers 10 of the left and right frames 9 are respectively supported inside the groove shapes of the left and right rails 12 and roll.

  Further, as shown in FIG. 1, left and right fixed rollers 13 having the same configuration are provided on the left and right side surfaces of the inner box 2 so as to be positioned on the front side of the left and right rails 12. Each of the frames 9 is slidably supported. That is, the door 7 is supported by the left and right fixed rollers 13 and the left and right movable rollers 10, slides back and forth, and is opened and closed.

  Further, as shown in FIGS. 3 and 4, the mounting portions 9 a, that is, the mounting screw portions (male screw portions) 10 a of the left and right movable rollers 10 are inserted into the mounting portions 9 a of the left and right movable rollers 10 of the left and right frames 9. Each hole 9b is formed. Furthermore, each attachment portion 9a is formed with a rectangular throttle portion 9c surrounding each hole 9b. The aperture 9c is formed so that the surface on the left and right movable rollers 10 side is the protruding side. The left and right movable rollers 10 are fixed to the respective attachment portions 9a using general-purpose nuts 16 as shown in FIG.

  Further, as shown in FIGS. 2 to 4, step bent portions 9 d that protrude toward the non-movable roller mounting surface side are respectively formed at the other end portions of the left and right frames 9, that is, the rear end portions of the respective mounting portions 9 a. ing. These step bent portions 9d function as reinforcing ribs for the respective attachment portions 9a.

Next, a load acting on the movable roller when the door of the refrigerator drawer according to Embodiment 1 of the present invention is opened and closed will be described with reference to FIGS. 1 to 4 based on FIGS. FIG. 5 is a cross-sectional view showing a comparative example in which a reinforcing material is attached to the attachment portion of the movable roller of the door frame. 6A is a side view showing a load direction to the movable roller of the refrigerator drawer according to Embodiment 1 of the present invention, and FIG. 6B is a cross-sectional view taken along line YY of FIG.
First, in a state in which the door 7 is closed, the stored item in the case 17 is located between the left and right fixed rollers 13 and the left and right movable rollers 10. Therefore, the left and right movable rollers 10 are in a state of being placed on the bottom surface inside the groove shape of the left and right rails 12, and the mounting portions 9 a of the left and right movable rollers 10 are subjected to the weight load of the stored items in the case 17. The accompanying upward bending moment is applied.

  When the door 7 is pulled out, the stored item in the in-case 17 is positioned in front of the left and right fixed rollers 13 as shown in FIGS. Therefore, the weight load of the case storage item is applied to the left and right movable rollers 10 arranged at the rear part of the left and right frames 9 (behind the fulcrum) with the left and right fixed rollers 13 as fulcrums. Then, the left and right movable rollers 10 are pressed against the upper surface inside the groove shape of the left and right rails 12. That is, when the door 7 is pulled out, each attachment portion 9a of the left and right movable roller 10 has a weight of the stored item in the case 17 as shown by a black arrow C in FIGS. A downward bending moment is applied with the load. The bending moment indicated by the black arrow C acts to deform the mounting portions 9a of the left and right movable rollers 10 in the direction indicated by the black arrow D in FIG. That is, the weight load of the stored item in the internal case 17 is applied to the mounting portions 9 a of the left and right movable rollers 10 of the left and right frames 9 when the door 7 is opened and closed.

  Further, the left and right movable rollers 10 and their respective attachment portions 9a are subjected to an external force in the left and right direction when viewed from the front of the refrigerator body 1 due to a side impact such as hitting a foot while the door 7 is pulled out. .

  Further, in the operation of removing or assembling the door 7, the left and right movable rollers 10 and their respective attachment portions have various directions in use such as external force from the up and down diagonal direction resulting from the abutment with the left and right rails 12. External force is applied.

  And the weight load or external force of such a stored item in the case 17 is concentrated on the left and right movable rollers 10 and their respective attachment portions 9a, particularly the peripheral portions of the respective holes 9b.

  However, since the drawer apparatus for refrigerators according to the first embodiment of the present invention forms the rectangular throttle portion 9c so as to surround each attachment portion 9a of the left and right movable roller 10, each attachment portion of the left and right movable roller 10 is provided. The strength of 9a can be improved. Therefore, even if an external force is applied from various directions, it is possible to make it difficult to deform the mounting portions 9 a of the left and right movable rollers 10 in the left and right frames 9. Therefore, the reinforcing member 14 and a screw (not shown) for attaching the reinforcing member 14 can be eliminated, the member cost and the number of attachment work steps can be reduced, and the manufacturing cost can be suppressed. And durability of the refrigerator provided with this drawer apparatus for refrigerators improves.

  Further, as shown in FIGS. 2 to 4, a step-bending portion 9 d that protrudes toward the anti-movable roller attachment surface is formed at the rear end portion of each attachment portion 9 a in the left and right frames 9. 9d functions as a reinforcing rib. Therefore, it is possible to make the mounting portions 9a of the left and right movable rollers 10 more difficult to deform. The height A of the stepped bending portion 9d shown in FIG. 4 is set to a height equivalent to the height B including the throttle portion as in the comparative example using the reinforcing material 14 shown in FIG. As a result, the left and right frames 9 that can maintain the same strength as in the case of using is obtained.

Embodiment 2. FIG.
FIG. 7 is a side view showing the movable roller mounting portion of the door frame of the refrigerator drawer according to Embodiment 2 of the present invention. In the figure, the same reference numerals are given to the same functional parts as those of Embodiment 1 described above. It is. In the description, reference is made to FIG. 4 and FIG.
As shown in FIGS. 4 and 7, the refrigerator drawer device according to Embodiment 2 of the present invention is configured so that the throttle portions formed in the respective attachment portions 9 a of the left and right movable rollers 10 of the left and right frames 9 A throttle portion 9f having a semicircular throttle portion 9e at the peripheral edge of the hole 9b through which the mounting screw portion 10a is inserted. The semicircular throttle portion 9e is arranged so that the semicircular opening 9g side faces the step bending portion 9d.

  In the refrigerator drawer according to Embodiment 2 of the present invention, the semicircular throttle 9e is formed at the peripheral edge of the hole 9b through which the mounting screw 10a of the left and right movable roller 10 is inserted. 9 can further improve the strength of each mounting portion 9a of the left and right movable rollers 10. Therefore, even if an external force is applied from various directions, it is possible to make it difficult for the mounting portions 9a of the left and right movable rollers 10 to be deformed. Therefore, the reinforcing member 14 (FIG. 5) and a screw (not shown) for attaching the reinforcing member 14 can be eliminated, the member cost and the number of attachment work steps can be reduced, and the manufacturing cost can be suppressed.

  In addition, since the narrowed portion 9e at the peripheral edge of the hole 9b is semicircular, even when the position of the stepped bending portion 9d is near the hole 9b through which the left and right movable rollers 10 are inserted, as in the second embodiment. By making the opening 9g of the semicircular throttle portion 9e face the step bending portion 9d, the semicircular throttle portion 9e can be easily formed, and the strength can be easily ensured.

  DESCRIPTION OF SYMBOLS 1 Refrigerator main body, 2 Inner box, 3 Outer box, 4 Thermal insulation material, 5, 6 Partition wall, 7 Door, 8 Storage room, 9 Left-right frame, 9a Mounting part, 9b Hole, 9c, 9f Restriction part, 9d Step bending Part, 9e semicircular throttle part, 9g opening, 10 left and right movable roller, 10a mounting screw part, 11 connecting member, 12 left and right rail, 13 left and right fixed roller, 14 reinforcing material, 16 general-purpose nut, 17 inner case, A , B Height, C, D Black arrows.

Claims (2)

A door provided on the front of the refrigerator body so as to be freely drawn out;
A frame in which one end is fixed to the rear surface of the door and is formed to extend in the interior depth direction, and a stepped portion is formed at the other end ;
A movable roller attached to the other end of the frame;
A rail that is fixed to the side surface of the inner wall of the refrigerator body and extends in the depth direction of the refrigerator, and supports the movable roller in a freely rolling manner.
A fixed roller that is fixed to the side surface of the inner wall of the refrigerator main body so as to be positioned on the near side of the rail, and that supports the frame slidably;
A cabinet case placed on the frame;
The mounting portion of the movable roller of the frame has a hole through which the mounting screw portion of the movable roller is inserted, and a throttle portion is formed so as to surround at least a part of the mounting portion ,
The throttle portion is formed in a semicircular shape at the peripheral edge of the hole, and is arranged so that the semicircular opening side faces the step bending portion.
Refrigerator drawer device. The refrigerator body,
A storage room provided in the refrigerator body,
The refrigerator characterized by providing the drawer | drawing-out apparatus for refrigerators of Claim 1 in the said storage room.

Images