CN104792108A - Refrigerator and lifting shelf thereof - Google Patents

Abstract

The invention provides a refrigerator and its liftable shelf. The liftable shelf includes a plate body and at least one lifting unit. The lifting unit includes an outer cylinder installed on the plate to support the plate; an inner cylinder along the The axial direction of the outer cylinder is movably inserted into the outer cylinder from the end of the outer cylinder, having at least one peripheral wall opening; and a locking mechanism, which includes: an expansion friction block, fixed in an axial position relative to the inner cylinder It is arranged at the opening of the peripheral wall of the inner cylinder, and is configured to allow the friction part on it to pass through the opening of the peripheral wall of the inner cylinder to abut against the inner surface of the outer cylinder through the elastic deformation of the force; the expansion force applying member is set in the inner cylinder, and configured to operably apply a radially outward expansion force to the expansion friction block, so as to drive the friction part of the expansion friction block against the inner surface of the outer cylinder, so that the inner cylinder The body is retained and locked relative to the outer cylinder. The liftable shelf of the present invention can realize stepless height adjustment.

Description

Refrigerator and its liftable shelf

technical field

The invention relates to a refrigeration device, in particular to a refrigerator and its liftable shelf.

Background technique

The storage compartment of the refrigerator is usually provided with a shelf for placing refrigerated or frozen items. In order to meet the placement requirements of items of different heights and improve the space utilization rate of the storage room, it is necessary to adjust the height position of the shelf. The usual adjustment method is to set ribs of different heights on the left and right walls of the storage room, and the shelf can be placed on the ribs of different heights to adjust its height, but the items on the shelf need to be taken out It can be adjusted later, and the operation is cumbersome. Moreover, since the positions of the ribs are fixed, the adjustment range is limited to a certain extent, and fine adjustment cannot be realized.

Contents of the invention

An object of the present invention is to provide a liftable shelf used in a storage room of a refrigerator, so as to solve the defects that the height adjustment range of the existing shelf is fixed and fine adjustment cannot be realized.

Another object of the present invention is to provide a refrigerator including the liftable shelf.

In one aspect, the present invention provides a liftable shelf used in a storage room of a refrigerator, which includes a board for placing items, and the liftable shelf further includes: at least one lifting unit, and each lifting unit includes: The outer cylinder is installed on the board to support the board; the inner cylinder is movably inserted into the outer cylinder from the end of the outer cylinder along the axial direction of the outer cylinder, and has at least one peripheral wall opening on its peripheral wall and a locking mechanism, the locking mechanism includes: an expansion friction block, fixedly arranged at the opening of the peripheral wall of the inner cylinder relative to the axial position of the inner cylinder, and configured to allow the friction part on it to elastically deform under force The opening through the peripheral wall of the inner cylinder abuts against the inner surface of the outer cylinder; the expansion force applying member is arranged in the inner cylinder and is configured to operatively apply radially outward expansion to the expansion friction block force, so as to drive the friction part of the expansion friction block against the inner surface of the outer cylinder, so that the inner cylinder is fixed and locked relative to the outer cylinder.

Optionally, the expansion friction block is a hollow cylindrical member made of elastic material; the friction portion is a radially outwardly protruding protrusion on the outer peripheral surface of the hollow cylindrical member.

Optionally, the expansion friction block has a tapered through hole opened along the axial direction of the outer cylinder and tapered in radial size along the direction from the beginning end to the end of the outer cylinder.

Optionally, the tensioning force applying member is a conical member extending along the axial direction of the outer cylinder and tapered from the starting end to the end of the outer cylinder; and the tensioning force applying member is partially inserted into the tapered through hole , and make the outer peripheral surface of the conical member abut against the inner peripheral surface of the tapered through hole, so that when the conical member moves toward the end of the outer cylinder, the elastic deformation of the compression and expansion friction block forces the friction part to radially move outward and against the inner surface of the outer cylinder.

Optionally, an elastic element is installed between the tensioning force applying member and the outer cylinder, so as to apply an elastic restoring force to the tensioning force applying member along the axial direction of the outer cylinder and toward the starting end of the outer cylinder; and a pulling mechanism configured to operatively apply a pulling force opposite to the direction of the elastic restoring force to the expansion force applying member, so as to drive the expansion force application member to move, thereby pushing the friction part of the expansion friction block, so that It rests against the inner surface of the outer cylinder.

Optionally, there is at least one position-limiting hole on the peripheral wall of the inner cylinder; and the pulling mechanism of each lifting unit includes: an inner wire rope segment, the first end of which is attached to the tensioning force applying member so as to control the tensioning force The applying member exerts a pulling force; the stopper is connected to the second end of the inner line segment, and is movably arranged at the limit hole relative to the axial position of the inner cylinder, and is configured to allow the transverse direction of the stopper The limit post passes through the limit hole, so as to limit the distance that the expansion force applying member is pulled out by the inner wire rope section along the axial direction of the inner cylinder within a predetermined range; the outer wire rope section, its first end Attached to the stopper, the second end extends out of the inner cylinder.

Optionally, two lifting units are respectively included on each transverse side of the liftable shelf; a side beam is arranged between the ends of the inner cylinders of the two lifting units on the same transverse side of the liftable shelf, and the side beam There is a central cavity in which the outer cord section of the lifting unit extends; and a coiling knob is provided on each side beam, and the outer cord sections of the two lifting units on the same lateral side of the liftable shelf The second end is attached to the winding knob in the same winding direction.

Optionally, the inner surface at the starting end of the outer cylinder has a protrusion that limits the movement of the inner cylinder along the axial direction of the outer cylinder.

Optionally, the outer cylinder is fixedly mounted on the board and extends in a direction forming a predetermined angle with the board; or the outer cylinder is pivotally mounted on the board so as to be operatively pivoted to be below the board , a folded position parallel to the board body, or an unfolded position pivoted to extend in a direction forming a predetermined angle with the board body.

In another aspect, the present invention also provides a refrigerator, which includes a box body defining a storage room inside; and at least one liftable shelf according to any one of the preceding items, the liftable shelf is detachably mounted on Storage room.

The liftable rack of the present invention adopts the outer cylinder to support the plate, and the inner cylinder is movably inserted into the outer cylinder, so the height of the lifting unit is adjusted by adjusting the depth of the inner cylinder inserted into the outer cylinder, thereby Realize the stepless adjustment of the shelf height.

Further, the liftable shelf of the present invention can conveniently complete the adjustment process by using elastic elements, stoppers, winding knobs and inner and outer wire rope segments, and can ensure that the adjustment range is within a limited height section , with better stability.

Further, the liftable shelf of the present invention can pivotally fix the outer cylinder on the board, further adjust the height of the shelf, and facilitate the lifting of the shelf according to the height of the placed items. Adjust to any position.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic perspective view of a liftable shelf according to an embodiment of the present invention;

Fig. 2 is an exploded schematic view of the liftable shelf shown in Fig. 1;

Fig. 3 is a schematic sectional view of the lifting unit in the liftable shelf shown in Fig. 1;

Fig. 4 is a schematic sectional view of the liftable rack shown in Fig. 1;

Fig. 5 is a schematic diagram of the liftable rack shown in Fig. 1 when the outer cylinder is in a folded position;

Fig. 6 is a schematic diagram of the liftable shelf shown in Fig. 1 after the first level of adjustment;

Fig. 7 is a schematic diagram of the liftable rack shown in Fig. 1 after the second level of adjustment;

FIG. 8 is a schematic diagram of a refrigerator according to one embodiment of the present invention.

Detailed ways

Fig. 1 is a schematic perspective view of a liftable shelf according to an embodiment of the present invention. The liftable shelf 10 may generally include a plate body 200 for placing items and at least one lift unit 100 . Each lifting unit 100 includes an outer cylinder 110 for supporting the plate body 200 and is movably inserted into the outer cylinder 110 from the end of the outer cylinder 110 (the end away from the plate 200 ) along the axial direction of the outer cylinder 110 The inner cylinder 120 in. A part of the inner cylinder 120 can be stretched out from the outer cylinder 110, and then the two can be fixed and locked, so that the height adjustment of the liftable shelf 10 can be realized. It can be understood that the inner cylinder 120 can be stretched to any position within a set range, therefore, this adjustment method belongs to stepless adjustment, which is convenient for fine-tuning the height.

FIG. 2 is an exploded schematic diagram of the liftable shelf 10 shown in FIG. 1 , and FIG. 3 is a schematic cross-sectional view of the lifting unit 100 in the liftable shelf 10 shown in FIG. 1 . As shown in FIGS. 2 and 3 , the starting end of the outer cylinder 110 (the end opposite to the end) is arranged on the plate body 200 , and the starting end of the outer cylinder 110 can be fixed to the bottom of the plate body 200 by using pins 500 . The cross-sections of the outer cylinder 110 and the inner cylinder 120 can be prism or cylinder, preferably quadrangular prism. The lifting unit 100 may further include a locking mechanism 130 to achieve retention and locking between the inner cylinder 120 and the outer cylinder 110 .

The locking mechanism 130 includes an expansion friction block 132 and an expansion force applying member 134 . At least one peripheral wall opening 122 may be provided on the peripheral wall of the inner cylinder 120 . When the inner cylinder 120 is in the shape of a quadrangular prism, the number of peripheral wall openings 122 is preferably four, which are located at the same axial position of the four peripheral walls of the inner cylinder 120 . The expansion friction block 132 is disposed in the inner cylinder 120 and is a hollow cylindrical member made of elastic material (such as rubber), and its outer peripheral surface protrudes radially outward to form a friction portion 133 . Friction patterns can be provided on the friction portion 133 to increase the friction force. The expansion friction block 132 is fixedly arranged at the peripheral wall opening 122 relative to the inner cylinder 120 in an axial position, and is configured to allow the friction part 133 on it to pass through the peripheral wall opening 122 of the inner cylinder 120 to abut against the elastic deformation under force. on the inner surface of the outer cylinder 110. The expansion force applying member 134 is disposed in the inner cylinder 120 and configured to operatively apply a radially outward expansion force to the expansion friction block 132 to drive the friction portion 133 against the inner surface of the outer cylinder 110 . surface, the inner cylinder 120 is retained and locked relative to the outer cylinder 110 by means of static friction.

Preferably, a pulling mechanism 150 and an elastic element 140 are respectively provided at two axial ends of the lifting unit 100 . The pulling mechanism 150 is configured to operatively apply a pulling force to the expansion force applying member 134 to drive the expansion force application member 134 to move, thereby pushing the friction portion 133 of the expansion friction block 132 against the outer surface. The inner surface of the barrel 110. The elastic element 140 is installed between the expansion force applying member 134 and the outer cylinder 110, and may also be connected to the pin 500 provided between the outer cylinder 110 and the plate body 200, so as to apply the expansion force to the expansion force applying member 134 along the The elastic restoring force in the axial direction of the outer cylinder 110 and towards the starting end of the outer cylinder 110, so that when the pulling mechanism 150 cancels the pulling force on the tension applying member 134, the tension applying member 134 is Under the action of its elastic reset force, it moves towards the direction of loosening and tightening the friction part 133 of the friction block 132, so as to release the retaining and locking between the inner cylinder 120 and the outer cylinder 110, so as to facilitate the adjustment operation again. The elastic element 140 preferably uses a tension spring.

The pulling mechanism 150 includes an inner wire segment 152 , a stopper 154 and an outer wire segment 156 . A first end of the inner wire segment 152 is attached to the expansion force applying member 134 for applying a pulling force thereto, and a second end is connected to the limiting member 154 . There is at least one limiting hole 124 (preferably two) on the peripheral wall of the inner cylinder 120, and the matching limiting member 154 has at least one limiting column 155 (the same number as the limiting hole 124) in the lateral direction . The limiting member 154 is movably disposed at the limiting hole 124 relative to the axial position of the inner cylinder 120 , and is configured to allow the limiting column 155 to pass through the limiting hole 124 . The first end of the outer line segment 156 is attached to the stopper 154, and the second end extends out of the inner cylinder 120, so that the limiter 154 can be applied to the stopper 154 along the axis of the inner barrel 120 by pulling the outer line segment 156. directional force, thereby driving the inner wire segment 152 to apply tension to the expansion force applying member 134 . The limiting hole 124 can limit the axial movement of the limiting member 154 within a predetermined range, so that the distance that the tension applying member 134 is pulled by the inner wire segment 152 along the axial direction of the inner cylinder 120 is limited to within within a predetermined range to enhance the reliability of the locking mechanism 130 .

Preferably, the inner surface at the starting end of the outer cylinder 110 has a protrusion 112 that limits the movement of the inner cylinder 120 along the axial direction of the outer cylinder 110, so as to prevent the starting end of the inner cylinder 120 (closer to One end of the initial end of the outer cylindrical body 110 ) is in contact with the pin 500 .

FIG. 4 is a schematic side view of the liftable shelf 10 shown in FIG. 1 . As shown in FIG. 4 , there are two lifting units 100 on the same lateral side of the board body 200, that is, the liftable shelf 10 has a lifting unit 100 at the four corners of the bottom of the board body 200, so that the board body 200 is more stable. ground support. A side beam 300 is arranged between the ends of the inner cylinders 120 of the two lifting units 100 on the same lateral side of the liftable shelf 10 (the end opposite to the starting end of the inner cylinder 120), and the side beams 300 can strengthen the supporting structure stability. In some embodiments, both ends of the side beam 300 are respectively bent 90° in the same direction, and then sleeved and fixed on the inner walls of the two inner cylinders 120 . There is a central cavity in the side beam 300 that allows the extension of the outer wire rope section 156, and each side beam 300 is provided with a wire winding knob 400, and the two lifting units 100 on the same lateral side of the liftable shelf 10 The second end of the outer cord segment 156 is attached to the winding knob 400 in the same winding direction. Lifting and lowering of two lifting units 100 on the same lateral side can be controlled by twisting the winding knob 400 . Steering wheels 410 may be provided on both axial sides of the side beam 300 to provide support for the steering of the outer wire segment 156 .

The process of stepless adjustment is introduced below. Before the stepless adjustment, most of the inner cylinder 120 is deep into the outer cylinder 110 . The winding knob 400 before adjustment is in the adjustable position by default. At this time, the outer wire rope segment 156 is in a loose state, and the limit post 155 is pushed against the highest point of the limit hole 124 . In the radial direction of the outer cylinder 110, the expansion force applying member 134 does not squeeze the expansion friction block 132, that is, there is almost no contact and friction between the friction part 133 and the outer cylinder 110 (the locking mechanism 130 is in a relaxed state ). At this time, the inner cylinder 120 can be stretched out from the outer cylinder 110 for a certain length. The position of the application member 134 in the axial direction of the inner cylinder 120 does not change, and the locking mechanism 130 is still in a relaxed state. After the height adjustment is completed, the winding knob 400 can be twisted to the locking gear, so that a part of the outer wire segment 156 can be wound on it, thereby pulling the stopper 154, the inner wire segment 152 and the tensioning force applying member 134 moves toward the end of the outer barrel 110 . The expansion force applying member 134 will press the expansion friction block 132 to produce elastic deformation, thereby forcing the friction part 133 to move radially outward and abut against the inner surface of the outer cylinder 110, so that the inner cylinder 120 and the outer cylinder 110 locked up.

In some embodiments, the outer cylinder 110 is fixedly installed on the board 200, and the outer cylinder 110 extends along a direction forming a predetermined angle with the board 200, which can be specifically set to 90° or more. The liftable shelf 10 at that time can only complete the stepless adjustment of height. Preferably, the outer cylinder 110 is pivotally mounted on the board 200 , that is, the starting end of the outer cylinder 110 can rotate along the lateral direction of the end of the board 200 with the pin 500 as a connecting shaft. According to specific usage conditions, the outer cylinder 110 can pivot to a folded position below the board 200 and parallel to the board 200 , or to an unfolded position extending in a direction forming a predetermined angle with the board 200 . The predetermined angle is preferably set above 91.5°, which can well support the board body 200 and prevent it from shaking left and right after placing heavy objects, or the danger of the liftable shelf 10 falling due to the shift of the center of gravity. When the outer cylinder 110 is pivotally mounted on the board 200 , the height of the liftable shelf 10 can be adjusted in two stages.

FIG. 5 is a schematic diagram of the liftable shelf 10 shown in FIG. 1 when the outer cylinder 110 is in a folded position. The outer cylindrical body 110 is pivoted to a folded position parallel to the plate body 200 with the pin 500 as a pivot axis, and the liftable shelf 10 is at an initial height state at this moment.

FIG. 6 is a schematic diagram of the liftable shelf 10 shown in FIG. 1 after the first level of adjustment, and the process of the first level of adjustment will be described below. When it is necessary to adjust the position of the liftable shelf 10, the outer cylindrical body 110 can be pivoted to the unfolded position. Compared with the initial height state of the liftable shelf 10 shown in FIG. The position is lifted, and the lifted height is directly related to the axial length of the outer cylinder 110 . In order to ensure stable support, the axial length of the outer cylinder 110 should not be too long, preferably set to 5cm-10cm.

FIG. 7 is a schematic diagram of the liftable shelf 10 shown in FIG. 1 after the second level of adjustment, when the liftable shelf 10 has completed the first level of height adjustment (that is, the outer cylinder 110 is pivoted to the unfolded position) Afterwards, it can continue to raise its height through the second level of adjustment (ie, the aforementioned stepless adjustment). The process of the second level of adjustment has been described above, and will not be repeated here.

Fig. 8 is a schematic diagram of a refrigerator according to an embodiment of the present invention, illustrating the situation when the liftable shelf 10 of the present invention is applied to a refrigerator. As shown in FIG. 8 , the refrigerator 1 includes a liftable shelf 10 and a box body 20 , a storage room is defined inside the box body 20 , and the liftable shelf 10 is detachably installed in the storage room. Specifically, a plurality of ribs 30 of different heights may be provided on the left and right walls of the storage room. The liftable shelf 10 is placed in the storage room, and its lateral sides are respectively built on the upper surfaces of the ribs 30 on the left and right wall surfaces of the storage room. Through the first-level adjustment and the second-level adjustment, the liftable shelf 10 can be adjusted to any height position of the storage room, so as to meet the requirements for placing items of different heights.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. for the Liftable rack in refrigerator storage chamber, comprise the plate body for placing objects, it is characterized in that, described Liftable rack also comprises: at least one lifting unit, and each described lifting unit comprises:

Outer cylinder body, is installed on described plate body, to support described plate body;

Inner barrel, the axial direction along described outer cylinder body movably inserts described outer cylinder body from the end of described outer cylinder body, and its perisporium has at least one week wall opening; And

Retaining mechanism, it comprises:

Swelling brake pad, is arranged on the perisporium opening part of described inner barrel regularly relative to described inner barrel axial location, and all wall openings being configured to pass with allowing the stressed elastic deformation of the friction part on it described inner barrel are resisted against the inner surface of described outer cylinder body; With

Tension force applies component, be arranged in described inner barrel, and be configured to operationally apply radially outer tension force to described swelling brake pad, be resisted against the inner surface of described outer cylinder body with the friction part ordering about described swelling brake pad, thus described inner barrel is locked by maintenance relative to described outer cylinder body.

2. Liftable rack according to claim 1, is characterized in that,

Described swelling brake pad is the hollow tube-shape component be made up of elastomeric material;

Described friction part is the lug boss that described hollow tube-shape component outer peripheral face radially outward protrudes.

3. Liftable rack according to claim 2, is characterized in that,

Have in described swelling brake pad along described outer cylinder body axial direction offer and radial dimension along the conical through-hole of the initiating terminal terminad direction convergent of described outer cylinder body.

4. Liftable rack according to claim 3, is characterized in that,

Described tension force applies the cone member that component is the initiating terminal terminad direction convergent along described outer cylinder body axial direction extension and along described outer cylinder body; And

Described tension force applies component and partly inserts in described conical through-hole, and make the outer peripheral face of described cone member be resisted against the inner peripheral surface of described conical through-hole, when described cone member is towards the end direction motion of described outer cylinder body, oppresses described swelling brake pad and produce elastic deformation thus force described friction part radial outward movement and be resisted against the inner surface of described outer cylinder body.

5. Liftable rack according to claim 1, is characterized in that, each described lifting unit also comprises:

Flexible member, is arranged on described tension force and applies between component and described outer cylinder body, to apply the elastic reset power that component applies the axial direction along described outer cylinder body and the initiating terminal towards described outer cylinder body to described tension force; With

Draw-off mechanism, be configured to operationally to apply component to described tension force and apply the traction force contrary with the direction of described elastic reset power, apply component motion to order about described tension force, thus push the friction part of described swelling brake pad, make it be resisted against the inner surface of described outer cylinder body.

6. Liftable rack according to claim 5, is characterized in that,

The perisporium of described inner barrel has at least one spacing hole; And

The draw-off mechanism of each described lifting unit comprises:

Inner wire ran, its first end is attached to described tension force and applies component to apply component to described tension force applying traction force;

Locating part, connect the second end of described inner wire ran, and be movably arranged on described spacing hole place relative to described inner barrel axial location, and be configured to allow the limited post of the horizontal direction of described locating part to pass described spacing hole, be limited in preset range so that described tension force is applied component by the distance that described inner wire ran goes out along described inner barrel axial direction institute tractive;

Outer lines ran, its first end is attached to described locating part, and the second end extends described inner barrel.

7. Liftable rack according to claim 6, is characterized in that,

Two described lifting units are comprised respectively at each cross side of described Liftable rack;

Be provided with curb girder between the end being in the described inner barrel of two described lifting units of the same cross side of described Liftable rack, there is in described curb girder the central cavity allowing the outer lines ran of described lifting unit to extend wherein; And

Curb girder described in every root is provided with coiling knob, and the second end being in the outer lines ran of two lifting units of the same cross side of described Liftable rack is attached to described coiling knob with identical coiling direction.

8. Liftable rack according to claim 1, is characterized in that,

The inner surface at the initiating terminal place of described outer cylinder body has and carries out spacing protuberance to described inner barrel along the moving of axial direction of described outer cylinder body.

9. Liftable rack according to claim 1, is characterized in that,

Described outer cylinder body is installed on described plate body regularly, and the direction that edge and described plate body are predetermined angular extends; Or

Described outer cylinder body is installed on described plate body pivotly, is in folding position below described plate body, parallel with described plate body to be operationally pivoted to, or to be pivoted to described plate body be the expanded position that the direction of predetermined angular extends.

10. a refrigerator, is characterized in that comprising:

Inside is limited with the casing of material storage room; With

At least one Liftable rack according to any one of claim 1-9, described Liftable rack is removably mounted in described material storage room.