CN114787569A

CN114787569A - Refrigerator

Info

Publication number: CN114787569A
Application number: CN202080086110.8A
Authority: CN
Inventors: 岩上荣生; 石田贵志
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Priority date: 2019-12-25
Filing date: 2020-12-16
Publication date: 2022-07-22
Anticipated expiration: 2040-12-16
Also published as: JP7374474B2; JP2021103035A; CN114787569B; WO2021129484A1

Abstract

The refrigerator (1) comprises a storage rack height position adjusting part (30) and a rib (21) arranged on the storage rack (20), wherein a first convex part (211) and a second convex part (212) on the rib (21) are respectively clamped with a plurality of first concave parts (311) and a plurality of second concave parts (312) of a track groove (31) of the storage rack height position adjusting part (30), the height position of the storage rack (20) can be adjusted, and the storage space of stored objects can be effectively used.

Description

Refrigerator

Technical Field

The present invention relates to a refrigerator.

Background

In order to effectively use a storage space in the refrigerator, for example, a plurality of shelves for partitioning the inside of the refrigerating chamber are arranged side by side in the up-down direction. For the same purpose, a plurality of storage shelves are provided in parallel in the vertical direction in the heat insulation door that opens and closes the front opening of the refrigerating compartment.

However, in a general refrigerator, the positions of the shelf and the storage shelf are fixed. On the other hand, the stored objects have various heights depending on the types and packaging forms thereof. Thus, when the height position of the shelf or the storage rack is fixed, an empty area is generated between the stored object and the shelf or the storage rack arranged directly above the stored object. Since the vacant area becomes an ineffective area where the stored objects cannot be placed, effective use of the storage space in the refrigerator is hindered. For example, techniques for eliminating such an invalid region in a refrigerator are disclosed in the following

patent documents

1 and 2.

[ Prior art documents ]

[ patent document ]

[ patent document 1 ] Japanese unexamined patent publication No. 2010-71577

[ patent document 2 ] Japanese unexamined patent publication No. 2005-43048

Disclosure of Invention

[ problem to be solved by the invention ]

All of the techniques disclosed in the above patent documents are techniques for adjusting the height position of a shelf in a refrigerating chamber, and are not techniques for adjusting the height position of a storage rack provided inside a heat insulation door. Since the storage rack also stores stored articles having various heights, such as bottles containing beverages, liquid seasonings, and the like, the problem of the ineffective area described above also occurs.

In view of the foregoing, it is an object of the present invention to provide a refrigerator including a storage shelf provided inside an insulated door and capable of adjusting a height position, so as to seek further flexible and efficient use of a storage space for stored objects.

[ means for solving the problems ] to solve the problems

In order to solve the above problem, a refrigerator according to the present invention includes:

a refrigerator main body including a storage chamber;

an insulation door disposed at a front side of the refrigerator main body for opening and closing the storage chamber;

a storage rack arranged at the back side of the heat insulation door and used for storing stored objects;

a pair of ribs protruding outward from both side walls of the storage rack, respectively, and extending in a height direction of the storage rack; and

a pair of receiving frame height position adjusting parts respectively arranged at two sides of the back surface of the heat insulation door and comprising track grooves for embedding the ribs in a way of moving up and down;

wherein a first convex portion is formed on a front wall of the rib;

wherein a second convex portion is formed on a rear wall of the rib;

wherein a plurality of first concave portions engageable with the first convex portions are provided in the track groove in series in the height direction of the first side wall;

wherein a plurality of second concave portions capable of engaging with the second convex portions are provided in the track groove in series in the height direction of the second side wall;

and, the storage rack is fixed at a predetermined height position by moving the storage rack up and down along the rail groove into which the rib is fitted, and the first convex portion reaches a height position of any one of the first concave portions while the second convex portion reaches a height position of any one of the second concave portions, the first convex portion being engaged with the first concave portion and the second convex portion being engaged with the second concave portion.

In the refrigerator according to the present invention, the rail groove is wider than the rib, and the engagement between the first convex portion and the first concave portion and the engagement between the second convex portion and the second concave portion are released by the rear side of the storage rack being raised or lowered, so that the storage rack can be moved up and down.

In addition, the refrigerator according to the present invention is a refrigerator in which a rack extending in a height direction is provided at a predetermined position of a height position adjusting portion of the storage rack, wherein the storage rack includes:

a rotating body including a base plate, a pinion gear provided on a front surface side of the base plate and meshed with the rack, an annular portion provided on a back surface side of the base plate, and a plurality of claw portions provided side by side along an outer periphery of the annular portion, each of the plurality of claw portions protruding outward in a radial direction of the annular portion; and

and a locking lever including a collision protrusion portion that can collide with the claw portion of the rotating body, the locking lever colliding with the claw portion that rotates in conjunction with the lowering of the storage rack and locking the rotation of the claw portion.

In addition, in the refrigerator according to the present invention, the claw portion includes:

an inclined surface that collides with one surface of the collision protrusion when rotating in conjunction with the rising of the storage rack; and

a vertical surface provided opposite to the inclined surface and configured to collide with the other surface of the collision protrusion when the vertical surface rotates in conjunction with the lowering of the storage rack;

wherein the one face of the collision projection is inclined in correspondence with the inclined face;

wherein the other face of the collision protrusion is vertically disposed corresponding to the vertical face;

and wherein, when the inclined surface collides with the one surface, the inclined surface slides on the one surface while the collision projection is pushed, thereby allowing the claw portion to rotate in conjunction with the ascent of the housing rack, on the other hand,

when the vertical surface collides with the other surface, the vertical surface interferes with the other surface, thereby locking the rotation of the claw portion.

In the refrigerator according to the present invention, in the storage shelves provided vertically adjacent to each other, a falling-down prevention rib for preventing the stored material stored in the lower storage shelf from falling down is formed on the bottom wall of the upper storage shelf.

In the refrigerator according to the present invention, the pair of long protruding walls protruding into the storage chamber from the back side of the heat insulation door is further provided, and the pair of storage rack height position adjusting portions are respectively attached to the inner sides of the pair of protruding walls.

In the refrigerator according to the present invention, the storage rack has first recessed regions provided in front regions of the two side walls, the first recessed regions being recessed inside the storage rack to accommodate the protruding walls, and the pair of ribs are respectively provided in the first recessed regions of the two side walls.

In the refrigerator according to the present invention, the storage shelf has first recessed regions and second recessed regions recessed further inward from the first recessed regions provided in front regions of both side walls, the rotating body and the lock lever are provided in the second recessed regions, and the lock lever is disposed above the rotating body in the second recessed region.

In addition, in the refrigerator according to the present invention, an upper surface of the second recessed area has an opening, one end side of the lock lever is rotatably connected to a front end portion of the upper surface by a rotating shaft, and the lock lever is rotatable to a position where the other end side of the lock lever is accommodated at the opening of the upper surface.

In the refrigerator according to the present invention, the collision projection projects downward from a bottom portion on the other end side and collides with the claw portion of the rotating body.

[ Effect of the invention ]

According to the present invention, by providing the rib protruding outward from the side wall of the storage shelf and the storage shelf height position adjusting portion including the rail groove functioning as a moving path in the up-down direction thereof when the rib is fitted therein, the storage shelf can be moved in the up-down direction. Further, the storage rack can be fixed by moving the storage rack to a predetermined height position, and engaging the first convex portion of the rib with the first concave portion of the rail groove while engaging the second convex portion of the rib with the second concave portion of the rail groove. Accordingly, the height position of the storage rack can be appropriately adjusted in accordance with the height of the stored object stored in the storage rack, and therefore, the occurrence of an invalid area can be suppressed. Therefore, the storage space of the stored object arranged on the back side of the heat insulation door can be effectively used compared with the prior refrigerator with the fixed height position of the storage rack. Further, the height position of the storage shelf can be adjusted by the simple structure of the first and second protrusions of the rib and the first and second recesses of the rail groove as described above, and thus it is possible to prevent the cost of the refrigerator from being excessively increased.

Further, according to the present invention, by the track groove being wider than the rib, a minute gap can be formed between the track groove and the rib. Thus, the rib in the rail groove is inclined by the rear side of the storage rack being raised or lowered as compared with the front side, and the engagement of the first convex portion with the first concave portion and the engagement of the second convex portion with the second concave portion are released. As a result, the storage rack fixed at the predetermined height position can be returned to the vertically movable state. According to this aspect, the fixing of the storage rack can be released by the simple operation described above. This makes it possible to easily perform the height adjustment work of the storage rack.

In addition, according to the present invention, when the housing rack is to be lowered, the claw portion of the rotating body collides with the collision convex portion of the lock lever, and the rotation of the claw portion is locked. Thus, in addition to the engagement structure of the first convex portion of the rib with the first concave portion of the rail groove and the engagement structure of the second convex portion of the rib with the second concave portion of the rail groove, this aspect of the present invention can fix the housing rack at a prescribed height position by both of the rotation locking structures of the claw portion of the lock lever described above. Thus, according to the present invention, even if the engagement between the first projecting portion of the rib and the first recessed portion of the rail groove or the engagement between the second projecting portion of the rib and the second recessed portion of the rail groove is insufficient, the lowering of the storage rack can be prevented by the rotation lock structure of the claw portion of the lock lever. As a result, the storage rack can be effectively prevented from being accidentally dropped, and safety can be secured. In addition, the small gear and the rack are meshed to assist the lifting movement of the storage rack.

Further, according to the present invention, when the storage rack is raised, the inclined surface of the claw portion collides with one surface of the collision convex portion and pushes the collision convex portion, so that the claw portion is allowed to rotate in conjunction with the raising of the storage rack, and when the storage rack is about to be lowered, the vertical surface of the claw portion collides with the other surface of the collision convex portion, so that the locking claw portion rotates in conjunction with the lowering of the storage rack. Thus, according to the present invention, since the claw portion linked with the raising of the storage rack is not prevented from rotating, the storage rack can be raised without increasing an excessive work load, and since the claw portion linked with the lowering of the storage rack is prevented from rotating by the lock lever, it is possible to effectively prevent the storage rack from accidentally falling. Therefore, convenience and safety can be improved simultaneously.

In addition, according to the present invention, since the height position of the upper storage rack can be adjusted in conformity with the height of the stored object stored in the lower storage rack, it is possible to arrange the falling-over preventing rib at an appropriate position in conformity with the height of the stored object. Thus, even if the stored objects with different heights are stored in the storage rack, the stored objects can be prevented from overturning.

Drawings

Fig. 1 is an overall perspective view of a refrigerator according to the present embodiment.

Fig. 2 is a perspective view of the storage rack in the present embodiment.

Fig. 3 is a perspective view of the rotating body in the present embodiment.

Fig. 4 is an exploded view of the storage rack according to the present embodiment.

Fig. 5 is a partial perspective view of the housing rack in the state where the rotor and the lock lever are assembled in the present embodiment.

Fig. 6 is an explanatory view of the falling prevention rib included in the storage shelf.

Fig. 7 is a partial perspective view of the storage rack height position adjusting unit in the present embodiment.

Fig. 8 is a partial schematic view of the housing rack height position adjusting portion in the assembled state of the housing rack in the present embodiment.

Fig. 9a is a schematic view of the storage rack fixed at a predetermined height position.

Fig. 9b is a schematic view of the state where the storage rack is released from the predetermined height position.

Fig. 10a is a schematic view of the action of the rotating body and the lock lever when the storage rack ascends in the present embodiment.

FIG. 10b is a schematic view showing the operation of the rotating body and the lock lever when the storage rack is lowered in the present embodiment

Detailed Description

Next, a refrigerator 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the refrigerator 1 according to the present embodiment, the "up-down" direction corresponds to the height direction of the refrigerator 1, the "left-right" direction corresponds to the width direction of the refrigerator 1, and the "front-back" direction corresponds to the thickness direction of the refrigerator 1. Further, each direction of the heat insulating door is defined based on a state in which the heat insulating door closes the storage chamber. That is, the height direction (up-down direction) of the heat insulating door corresponds to the height direction of the refrigerator 1, the width direction (left-right direction) of the heat insulating door corresponds to the width direction of the refrigerator 1, and the thickness direction (front-back direction) of the heat insulating door corresponds to the thickness direction of the refrigerator 1.

[ Structure ]

The overall structure of the refrigerator 1 according to the present embodiment will be described with reference to fig. 1. Here, fig. 1 is an overall perspective view of the refrigerator 1. As shown in fig. 1, a refrigerator 1 according to the present embodiment includes a heat insulating box 2 corresponding to a refrigerator main body. The heat insulating box 2 includes an outer box made of a steel plate, an inner box made of a synthetic resin, and a heat insulating material made of foamed polyurethane filled in a gap between the outer box and the inner box.

A heat-insulating partition wall is disposed inside heat-insulating box 2, and refrigerating room 3, freezing room 4, vegetable room 5, and the like are defined in heat-insulating box 2. The refrigerator 1 according to the present embodiment includes a plurality of storage chambers corresponding to a refrigerating chamber 3, a freezing chamber 4, and a vegetable chamber 5 from the top. However, the arrangement order of the respective storage chambers is not limited thereto. In addition, the number of storage chambers is not limited thereto.

Each storage chamber provided in the heat-insulating box 2 has a front opening. The refrigerator 1 is further provided with an insulated door disposed at a front side of the insulated cabinet 2 to open and close the front openings, thereby opening and closing the storage compartments. The heat insulation door 10 is rotatably coupled to the heat insulation box 2 through a hinge mechanism to open and close a front opening of the refrigerating chamber 3, and the hinge mechanism may be provided at upper and lower ends of a right end of the refrigerator 1 when viewed from a front side of the refrigerator 1. Further, the heat-insulating door 6 is arranged to be drawable in the front-rear direction with respect to the heat-insulating box body 2 to open and close the front opening of the freezing chamber 4. The heat-insulating door 7 is also arranged to be pulled out in the front-rear direction with respect to the heat-insulating box 2 to open and close the front opening of the vegetable compartment 5.

The insulated door 10 shown in fig. 1 includes: an outer package portion 11 having a back side (rear side) opening and having a hollow box shape; an inner packaging panel part 12 fitted in the back side opening region of the outer packaging part 11; and a frame body 13, wherein the frame body 13 is installed along the periphery of the inner packaging panel part 12 and is used for sealing the joint of the inner packaging panel part 12 and the outer packaging part 11. The inside of the heat insulation door 10 is filled with a heat insulation material.

A plurality of storage shelves 20 for storing objects to be stored are vertically arranged at predetermined intervals on the rear side of the insulation door 10 to which the inner packing panel part 12 is mounted. Although three storage shelves 20 including a storage shelf fixedly provided at the lowermost portion are shown in fig. 1, the number of the storage shelves 20 provided is not limited thereto. Each storage rack 20 stores stored objects of various types such as bottles for beverages and liquid seasonings.

Further, the refrigerator 1 is provided with long protruding

walls

121a and 121b, and the protruding

walls

121a and 121b protrude from both sides of the inner packaging panel portion 12 into the refrigerating chamber 3, respectively, in a state where the heat insulating door 10 closes the refrigerating chamber 3. A pair of housing frame height

position adjusting parts

30a and 30b for adjusting the height position of the housing frame 20 are respectively installed correspondingly inside the protruding

walls

121a and 121 b. Further, since the housing frame height

position adjusting portions

30a and 30b are the same member, the housing frame height

position adjusting portions

30a and 30b will be hereinafter collectively referred to as "housing frame height position adjusting portions 30".

The structure of the storage rack 20 according to the present embodiment will be described in detail with reference to fig. 2 to 5. Fig. 2 is a perspective view of the storage rack 20. Fig. 3 is a perspective view including the rotating body 22. Further, fig. 4 is an exploded view of the storage rack 20, in which a state is shown after the rotary body 22 and the locking lever 23 included in the storage rack 20 are detached from the main body of the storage rack 20. Fig. 5 is a partial perspective view of the storage rack 20 in an assembled state of the rotating body 22 and the lock lever 23.

As shown in fig. 2, the storage rack 20 includes a pair of

ribs

21a and 21b provided on the two side walls 20S1 and 20S2, respectively, and the

ribs

21a and 21b are hereinafter collectively referred to as "ribs 21". In the present embodiment, first recessed areas 20S3 and 20S4, which are recessed inside the storage shelf 20 so as to accommodate the protruding

walls

121a and 121b of the inner packaging panel part 12, are provided in front side areas of the two side walls 20S1 and 20S2 of the storage shelf 20, respectively. Two of the pair of ribs 21 are provided in the first recessed areas 20S3 and 20S4, respectively.

A pair of ribs 21 protrude outward from both side walls 20S1 and 20S2 of the storage rack 20, respectively, and extend in the height direction of the storage rack 20. A first protrusion 211 protruding forward is formed on the front wall 21F of the rib 21. Similarly, a second convex portion 212 protruding rearward is formed on the rear wall 21B of the rib 21. The number of the first convex portions 211 shown in fig. 2 is one, but the number is not limited thereto. Further, the position of the first convex portion 211 is also not limited to the position shown in the drawings. Similarly, the number of the second convex portions 212 shown in fig. 2 is also one, but the number is not limited thereto. Further, the position of the second convex portion 212 is also not limited to the position shown in the drawing.

In addition, on each of the two side walls 20S1 and 20S2 of the housing rack 20, specifically, at the second recessed areas 20S5 and 20S6 recessed further inward from the first recessed areas 20S3 and 20S4, the rotating body 22 is provided. As shown in fig. 3, the rotating body 22 includes a base plate 221, a pinion gear 222, a ring-shaped portion 223, and a plurality of claw portions 224. Here, the pinion gear 222 is provided on the surface 221F side of the base plate 221. The annular portion 223 and the claw portion 224 are provided on the back surface 221B side of the substrate 221.

The plurality of claw portions 224 protrude radially outward of the annular portion 223 and are arranged along the outer periphery of the annular portion 223. Further, each claw portion 224 includes an inclined surface 224S inclined such that the width of the claw portion 224 becomes narrower from the inner side to the outer side in the radial direction, and a vertical surface 224V rising vertically from the outer peripheral surface of the annular portion 223.

In addition, as shown in fig. 4 and 5, a pair of lock levers 23 are provided at the second recessed areas 20S5 and 20S6, respectively. Each lock lever 23 in the present embodiment is disposed above the rotating body 22 attached to the same recessed area as a member acting on the rotating body 22 that rotates.

In the present embodiment, the upper surfaces 20S51 and 20S61 of the aforementioned second recessed areas 20S5 and 20S6 have openings, respectively. Next, taking the structure of the second recessed area 20S6 and the lock lever 23 fitted on the second recessed area 20S6 as an example, the second recessed area 20S5 and the lock lever 23 fitted on the second recessed area 20S5 also have the same structure.

One end side 231 of the lock lever 23 is rotatably connected to a front end portion 20S62 of the upper surface 20S61 having an opening by a rotating shaft, and the lock lever 23 is rotatable so that the other end side 232 is accommodated at the opening of the upper surface 20S61 (refer to fig. 5). However, the position of the lock lever 23 is not limited thereto.

In addition, as shown in fig. 5, the lock lever 23 includes a collision convex portion 233, and the collision convex portion 233 protrudes downward from the bottom portion of the other end side 232 and collides with the claw portion 224 of the rotating body 22. The collision protrusion 233 includes: a surface 233S which collides with the inclined surface 224S of the claw portion 224; and another surface 233V which is provided opposite to the one surface 233S and collides with the vertical surface 224V of the claw portion 224.

One surface 233S of the collision projection 233 is inclined in correspondence to the inclined surface 224S of the pawl 224. Further, the other face 233V of the collision projection 233 is provided extending vertically downward from the bottom of the lock lever 23, that is, vertically so as to correspond to the vertical face 224V of the pawl 224.

In addition, the storage shelves 20 preferably include a falling prevention rib 24 to prevent stored objects stored in another storage shelf 20 directly below one storage shelf 20 from falling. As shown in fig. 6, the falling prevention rib 24 in the present embodiment extends downward from the bottom wall 20B of the storage shelf 20 to cover at least the upper front area and the side area of the stored goods. For example, when the stored object is about to fall over due to any impact, the upper end thereof collides with the falling prevention rib 24, and the falling prevention rib 24 and the upper end of the stored object interfere with each other, thereby preventing the stored object from falling over.

As described later, the storage rack 20 is supported by the storage rack height adjusting unit 30 and can be moved up and down by the storage rack height adjusting unit 30. Thus, among the storage shelves 20 disposed vertically adjacent to each other, at least the storage shelf 20 disposed at the upper side can be moved to the vicinity of the upper end of the stored object stored in the lower storage shelf 20.

Therefore, when the stored objects having different heights are stored in the lower storage shelf 20, the rib 24 for preventing the overturn can be disposed at a proper position by the vertical movement of the upper storage shelf 20. Thereby, the stored object can be more effectively prevented from falling over, as compared with the case where the ribs 24 for preventing falling over are provided in the conventional storage rack 20 whose height position is fixed.

Next, the structure of the storage rack height position adjusting section 30 will be described in detail with reference to fig. 7 and 8. Fig. 7 is a partial perspective view showing a part of the housing frame height position adjusting portion 30. Further, fig. 8 shows a partial schematic view of the housing rack height position adjusting section 30 in the assembled state of the housing rack 20.

The storage rack height position adjusting unit 30 has a function of supporting the storage rack 20 so as to be movable up and down and adjusting the height position thereof. Referring to fig. 7, more specifically, the housing height position adjustment portion 30 includes a rail groove 31 extending in a height direction thereof and a rack 32 extending substantially parallel to the rail groove 31.

In the present embodiment, a plurality of first concave portions 311, which are recessed to the front side, are recessed on the first side walls 31S1 of the rail groove, respectively. As shown in fig. 7, the plurality of first recesses 311 are arranged side by side in order along the height direction of the track groove 31. The plurality of first recesses 311 are shown as being arranged at equal intervals, but is not limited thereto.

In addition, a plurality of second concave portions 312, which are recessed to the rear side, are recessed on the second side walls 31S2 of the rail groove, respectively. As shown in fig. 7, the plurality of second recesses 312 are arranged side by side in order along the height direction of the track groove 31. The plurality of second recesses 312 shown in the drawing are arranged at equal intervals, but are not limited thereto.

As shown in fig. 8, the rail groove 31 is wider than the rib 21 of the housing 20, and the rib 21 is fitted into the rail groove 31. In this state, the rib 21 moves up and down, and the first convex portion 211 thereof reaches the position of the first concave portion 311 of the track groove 31. Thereby, the first protrusion 211 is engaged with the first recess 311. Likewise, the second convex portion 212 of the rib 21 reaches the position of the second concave portion 312 of the track groove 31. Thereby, the second protrusion 212 is engaged with the second recess 312. In this way, the storage shelf 20 can be supported by the rib 21 not only on the storage shelf position adjusting portion 30 but also moved to a specified arbitrary height position along the extending direction of the rail groove 31, that is, the up-down direction.

As shown in fig. 8, the rack 32 of the storage rack position adjusting portion 30 in the present embodiment can be engaged with the pinion 222 provided on the rotating body 22 of the storage rack 20. Thereby, the rack 32 is disposed at a position opposed to the pinion 222. Although not particularly limited, the rack 32 in the present embodiment is formed along the height direction of the front side outer wall 33 of the housing rack height position adjusting section 30.

Referring to fig. 1, a pair of storage shelf height

position adjusting portions

30a and 30b in the present embodiment are disposed substantially parallel to the back side of the heat insulation door 10. Therefore, as long as the housing rack 20 is provided with the

ribs

21a and 21b, the

ribs

21a and 21b are provided with the first protrusion 211 and the second protrusion 212 that cooperate to adjust the height position, and the distance between the

ribs

21a and 21b is substantially constant, even if the shape of the housing rack 20 is different, it is applicable to the housing rack height position adjusting portion 30. Further, even if the number of the storage shelves 20 is increased as necessary, the storage shelves 20 can be easily assembled to the storage shelf height position adjusting parts 30.

In addition, in the present embodiment, the housing frame height position adjusting portion 30 is mounted as a separate member inside the protruding

walls

121a and 121b of the inner housing panel portion 12, but the mounting manner is not limited thereto. For example, in other embodiments, the inner sides of the protruding

walls

121a and 121b of the inner package panel part 12 are provided with long-sized recessed spaces in the height direction, and the recessed spaces serve as the rail grooves 31, so that the protruding

walls

121a and 121b correspond to the housing shelf height position adjusting parts. Of course, the technical solution of the present invention is not limited thereto.

[ actions ]

Next, the fixing and releasing operation of the height position of the storage rack 20 will be described with reference to fig. 9. Here, fig. 9a is the same as the aforementioned fig. 8, and shows a state where the storage rack 20 is fixed at a specified height position. Further, fig. 9b shows a state where the storage shelf 20 is released from being fixed at a specified height position.

First, as shown in the left side of fig. 9a, when the storage shelf 20 moves to a predetermined height position, the first protrusion 211 of the rib 21 engages with the first recess 311 of the track groove 31, and the second protrusion 212 of the rib 21 engages with the second recess 312 of the track groove 31. Thus, the storage rack 20 is supported by the rail groove 31 of the storage rack height position adjusting part 30 and fixed at a predetermined height position.

At this time, as shown in the lower right drawing of fig. 9a, a gap S1 is provided between the region 21B1 of the rear wall 21B of the rib 21 that opposes the first protrusion 211 and the second side wall 31S2 of the rail groove 31. Referring to the upper right view of fig. 9a, there is a gap S2 between the region 21F1 in the front wall 21F of the rib 21 that is opposite to the second projection 212 and the first side wall 31S1 of the rail groove 31.

In this state, when the storage shelf 20 is inclined as shown in the left drawing of fig. 9b, for example, the rear side is raised higher than the front side, since there are gaps S1 and S2 between the rib 21 and the rail groove 31, the upper side of the rib 21 moves forward, that is, the right side of the drawing, see the upper right drawing of fig. 9b, while the lower side of the rib 21 moves rearward, that is, the left side of the drawing, see the lower right drawing of fig. 9 b. Thereby, the engagement between the first convex portion 211 and the first concave portion 311 is released, and the engagement between the second convex portion 212 and the second concave portion 312 is released. This releases the fixing of the storage shelf 20.

The storage rack 20 released from the fixing is returned to the vertically movable state again. Next, the storage shelf 20 moves up and down, and the first convex portion 211 engages with the other first concave portion 311 of the rail groove 31 and the second convex portion 211 engages with the other second concave portion 312 of the rail groove 31, so that the storage shelf 20 can be fixed at different height positions.

According to the present embodiment, since the height position of the storage shelf 20 can be adjusted by the engagement structure of the rib 21 and the rail groove 31, the structure is simple, and the cost can be reduced. Further, since the fixing of the storage rack 20 can be released only by the operation of tilting the storage rack 20, the height adjustment of the storage rack 20 can be performed easily.

However, the manner of releasing the fixing of the storage rack 20 is not limited to the manner shown in fig. 9. For example, if the first protrusion 211 is provided on the upper side of the rib 21 and the second protrusion 212 is provided on the lower side of the rib 21, the storage rack 20 can be released from being fixed so that the rear side of the storage rack 20 is lower than the front side, that is, the storage rack 20 is inclined in the opposite direction to fig. 9 b. The fixing of the storage rack 20 may be released by other means.

Next, the operation of the rotating body 22 and the lock lever 23 provided in the storage rack 20 will be described with reference to fig. 10. Here, fig. 10a is a diagram illustrating the operation of the rotating body 22 and the lock lever 23 when the storage rack 20 is raised. Fig. 10b is a diagram illustrating the operation of the rotating body 22 and the lock lever 23 when the storage rack 20 is lowered.

First, when the storage rack 20 is raised, the pinion gear 222 engaged with the rack of the storage rack height adjusting section 30 rotates. In conjunction with this, the claw portion 224 coupled to the pinion gear 222 via the base plate 221 rotates in the direction of the arrow shown in fig. 10 a. At this time, the inclined surface 224S of the pawl portion 224 collides with one surface 233S of the collision protrusion 233 constituting the lock lever 23.

As described above, the one surface 233S is inclined in correspondence with the inclined surface 224S. The other end 232 including the collision protrusion 233 of the lock lever 23 is rotatable around the one end 231. Thereby, after the inclined surface 224S collides with the one surface 233S, the inclined surface 224S slides on the one surface 233S while pushing up the other end side 232 of the lock lever 23 by the collision pressure of the inclined surface 224S.

Then, the rotational operation of the pawl 224 shown in fig. 10a is not stopped by the lock lever 23. In this way, the claw portion 224 can continue to rotate in this manner, and therefore, the operation of the storage rack 20 is not hindered. In addition, the ascending operation of the storage rack 20 is assisted by the rotation of the pinion 222 of the rotating body 22, which is engaged with the rack 32 of the storage rack height position adjusting part 30.

In contrast, when the storage rack 20 is lowered, the pinion gear 222 and the claw portion 224 rotate in the arrow direction shown in fig. 10 b. At this time, the vertical surface 224V of the pawl portion 224 collides with the aforementioned one surface 233S together with the other surface 233V of the collision protrusion 233 constituting the lock lever 23.

As described above, the vertical surface 224V of the claw portion 224 is vertically raised from the outer peripheral surface of the annular portion 223. Further, the other surface 233V of the lock lever 23 is vertically provided downward from the bottom of the lock lever 23. Thus, the moving direction of the vertical surface 224V which collides with the other surface 233V is substantially orthogonal to the other surface 233V. Therefore, the vertical plane 224V and the other plane 233V physically interfere with each other. As a result, the other surface 233V blocks further rotation of the vertical surface 224V. Accordingly, the rotation of the pinion gear 222 is also stopped, and further lowering of the storage rack 20 is stopped.

Thus, the lowering of the storage rack 20 is stopped by the lock lever 23. Thus, even if the rib 21 of the storage rack 20 is not sufficiently engaged with the rail groove 31 of the storage rack height adjusting portion 30, the storage rack 20 can be prevented from dropping or falling off from the rail groove 31 by the action of the claw portion 224 and the lock lever 23.

In addition, when the height position of the storage rack 20 is intentionally lowered, the other end side 232 of the lock lever 23 is lifted. Thereby, the collision of the claw 224 with the collision convex 233 is avoided, and the rotation of the claw 224 shown in fig. 10b is not hindered. As a result, the pinion gear 222 can rotate while meshing with the rack 32, and the housing rack 20 is allowed to descend.

The embodiments of the present invention have been described in detail. However, the foregoing description is given for the purpose of promoting understanding of the present invention, and is not intended to limit the spirit of the present invention. The present invention can cover the content that can be changed or improved without departing from the gist thereof. Further, the present invention encompasses equivalents thereof.

[ description of symbols ]

1 refrigerator

10 Heat insulation door

20 storage rack

21 rib

211 first convex part

212 second projection

22 rotating body

221 substrate

222 pinion gear

223 annular part

224 claw portion

Inclined surface of 224S claw part

224V jaw vertical plane

23 locking lever

233 collision projection

233S collision projection part

The other surface of the 233V collision projection

24 anti-tip over rib

30 accommodating frame height position adjusting part

31 track groove

311 first concave part

312 second recess

32 rack

Claims

A refrigerator, characterized by comprising:

a refrigerator main body including a storage chamber;

an insulation door disposed at a front side of the refrigerator main body for opening and closing the storage chamber;

a storage rack arranged at the back side of the heat insulation door and used for storing stored objects;

a pair of ribs protruding outward from both side walls of the storage rack, respectively, and extending in a height direction of the storage rack; and

a pair of accommodating frame height position adjusting parts respectively arranged at two sides of the back surface of the heat insulation door and comprising track grooves for embedding the ribs therein in a mode of moving up and down;

wherein a first convex portion is formed on a front wall of the rib;

wherein a second projection is formed on a rear wall of the rib;

wherein a plurality of first concave portions engageable with the first convex portions are provided in the track groove in series in the height direction of the first side wall;

wherein a plurality of second concave portions engageable with the second convex portions are provided in the rail groove in the height direction of the second side wall in series;

and, the storage rack is fixed at a predetermined height position by moving the storage rack up and down along the rail groove into which the rib is fitted, and the first convex portion reaches a height position of any one of the first concave portions while the second convex portion reaches a height position of any one of the second concave portions, the first convex portion being engaged with the first concave portion and the second convex portion being engaged with the second concave portion.
The refrigerator according to claim 1, wherein the rail groove is wider than the rib, and by a rear side of the receiving rack being raised or lowered, engagement of the first convex portion with the first concave portion and engagement of the second convex portion with the second concave portion are released, and the receiving rack is enabled to move up and down.
The refrigerator according to claim 1, wherein a rack extending in a height direction is provided at a prescribed position of the storage rack height position adjusting portion; wherein, accomodate the frame and include:

a rotating body including a base plate, a pinion gear provided on a front surface side of the base plate and meshed with the rack, an annular portion provided on a back surface side of the base plate, and a plurality of claw portions arranged in line along an outer periphery of the annular portion, each of the plurality of claw portions protruding outward in a radial direction of the annular portion; and

and a locking lever including a collision protrusion that can collide with the claw portion of the rotating body, the locking lever colliding with the claw portion that rotates in conjunction with the lowering of the storage rack and locking the rotation of the claw portion.
The refrigerator according to claim 3, wherein the claw portion includes:

an inclined surface that collides with one surface of the collision protrusion when rotating in conjunction with the ascent of the storage rack; and

a vertical surface provided opposite to the inclined surface and configured to collide with the other surface of the collision protrusion when the vertical surface rotates in conjunction with the lowering of the storage rack;

wherein the one face of the collision protrusion is inclined corresponding to the inclined face;

wherein the other face of the collision projection is vertically provided in correspondence with the vertical face;

and wherein, when the inclined surface collides with the one surface, the inclined surface slides on the one surface while the collision projection is pushed, thereby allowing the claw portion to rotate in conjunction with the ascent of the housing rack, on the other hand,

when the vertical surface collides with the other surface, the vertical surface interferes with the other surface, thereby locking the rotation of the claw portion.
The refrigerator as claimed in claim 1, wherein in the storage shelves adjacently disposed up and down, a falling prevention rib for preventing the stored goods stored in the lower storage shelf from falling is formed at a bottom wall of the upper storage shelf.
The refrigerator according to claim 1, further comprising a pair of long protruding walls protruding from a rear side of the heat insulation door into the storage chamber, wherein the pair of receiving frame height adjusting portions are respectively installed inside the pair of protruding walls.
The refrigerator according to claim 6, wherein first recessed regions are provided in front side regions of both side walls of the receiving rack, respectively, the first recessed regions being recessed inside the receiving rack to accommodate the protruding walls, and the pair of ribs are provided in correspondence in the first recessed regions of the both side walls, respectively.
The refrigerator according to claim 3, wherein each of front side regions of both side walls of the housing rack is provided with a first recessed region, and a second recessed region recessed further inward from the first recessed region, the rotating body and the lock lever are both provided in the second recessed region, and the lock lever is disposed above the rotating body in the same second recessed region.
The refrigerator according to claim 8, wherein an upper surface of the second concave area has an opening, one end side of the locking lever is rotatably connected to a front end portion of the upper surface by a rotating shaft, and the locking lever is rotatable to receive the other end side thereof at the opening of the upper surface.
The refrigerator according to claim 9, wherein the collision protrusion protrudes downward from a bottom portion of the other end side and collides with the claw portion of the rotating body.