CN115031486B

CN115031486B - Drawer assembly and refrigerator

Info

Publication number: CN115031486B
Application number: CN202210963734.4A
Authority: CN
Inventors: 黄凯
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-11-08
Anticipated expiration: 2042-08-11
Also published as: CN115031486A

Abstract

The invention discloses a drawer assembly and a refrigerator, and relates to the technical field of refrigeration equipment, wherein the drawer assembly comprises a base, a drawer and an energy storage pop-up mechanism, the drawer and the base can move relatively, and a push-in stop block and a push-out stop block are arranged on the bottom surface of the drawer; the energy storage pop-up mechanism comprises a movable rack, a fixed rack, a ring gear, a movable rod, a locking block and a switch component, wherein the movable rack is connected to the base in a sliding manner, the movable rack is connected with a first spring fixed on the base, the fixed rack is fixed on the base, the ring gear is provided with an outer gear ring and an inner gear ring, the movable rack and the fixed rack are meshed with two opposite sides of the outer gear ring, the movable rod is connected to the base in a sliding manner, the movable rod is connected with a planetary gear, the planetary gear is meshed with the inner gear ring, the locking block can limit a hook of the movable rod, and the switch component is used for pushing the locking block to unlock the movable rod; the pushing stop block is used for pushing the movable rack and compressing the first spring, and the unlocked movable rod can push the pushing stop block to enable the drawer to extend out.

Description

Drawer assembly and refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a drawer assembly and a refrigerator.

Background

A refrigerator is a freezing apparatus maintaining a stable low temperature for maintaining a low temperature state of food materials or other articles. The refrigerator is internally provided with a refrigeration component, and the refrigeration component is used for producing cold energy to keep low temperature.

In the related art, a refrigerator generally has a drawer for placing various articles, and some of the drawers used in the refrigerator have an automatic ejection function. At present, mainly through motor drive gear rack motion pair in order to promote the drawer, realize the automatic function of stretching out, in order to satisfy the thrust demand, the probability of motor is great, and there are defects such as noise of operation is big, with high costs in the combination of motor and gear rack motion pair, and user experience is not good, remains to improve.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a drawer assembly, which can realize automatic extension of a drawer and reduce the cost.

The invention also provides a refrigerator with the drawer assembly.

The drawer assembly comprises a base, a drawer and an energy storage ejection mechanism, wherein the base is used for being connected with a refrigerator body of a refrigerator, the drawer is located above the base and can move along a first direction relative to the base, and a pushing stop block are arranged on the bottom surface of the drawer; the energy storage ejection mechanism is connected to the base and comprises a movable rack, a fixed rack, a ring gear, a movable rod, a locking block and a switch component, wherein the movable rack is connected to the base in a sliding mode along the first direction, the movable rack is connected with a first spring fixed to the base, the fixed rack is fixed to the base and arranged along the first direction, the ring gear is provided with an outer gear ring and an inner gear ring, the movable rack and the fixed rack are meshed with two opposite sides of the outer gear ring, the movable rod is connected to the base in a sliding mode along the first direction, the movable rod is connected with a planet gear, the planet gear is meshed with the inner gear ring, the locking block is connected to the base in a sliding mode along the second direction, the second direction is perpendicular to the first direction, one end of the movable rod is provided with a hook, the locking block can limit the hook to lock the movable rod, and the switch component is used for pushing the locking block to unlock the movable rod; the pushing stop block is used for pushing the movable rack and compressing the first spring, and the unlocked movable rod can push the pushing stop block to enable the drawer to extend.

The drawer assembly according to the embodiment of the first aspect of the invention has at least the following advantages: when the drawer is pushed in, the movable rack of the energy storage ejection mechanism is pushed through the pushing stop block, the first spring is compressed to realize energy storage, and the movable rack drives the ring gear and the planet gear so as to drive the movable rod to move; when the drawer is pushed in place, the hook of the movable rod is limited by the locking block, and the first spring is in a compressed state; when the drawer needs to be pulled out, the locking block is pushed through the switch component to unlock the movable rod, the movable rack moves reversely under the pushing of the first spring to drive the ring gear and the planetary gear, so that the movable rod moves reversely, the movable rod pushes the push-out stop block to extend the drawer, and a user can take articles in the drawer conveniently. The number of teeth of the planet gear is less than that of the inner gear ring, and the diameter of the planet gear is smaller than that of the ring gear, so that when the drawer is automatically ejected, the driving force and the speed can be amplified through the transmission of the movable rack, the ring gear and the planet gear, the requirements for pushing the drawer and articles inside the drawer are met, the force for pushing the drawer by a user is small, the use is convenient, and the automatic extending function of the drawer is quick and reliable. The drawer assembly adopts the energy storage ejection mechanism as a power mechanism, so that the running noise is greatly reduced, the user experience is improved, the production cost is low, and the product competitiveness of the refrigerator is favorably improved.

According to some embodiments of the first aspect of the present invention, the movable lever is provided with a plurality of mounting holes for mounting the rotating shafts of the planetary gears, the plurality of mounting holes being aligned in the first direction.

According to some embodiments of the first aspect of the present invention, the base is connected to a driving seat, the driving seat is connected to a movable lever, and the pushing stopper pushes the moving rack through the lever.

According to some embodiments of the first aspect of the present invention, the driving seat is provided with an annular slide in which one end of the bar is located and is movable along the slide, the moving rack crossing the slide in the second direction towards the first end face of the thrust block.

According to some embodiments of the first aspect of the present invention, the first end face includes a first inclined face, the thrust dog is provided with a second inclined face adapted to the first inclined face, the first inclined face and the second inclined face are each capable of abutting against the stopper rod, and the thrust dog is offset from the moving rack in an axial direction of the stopper rod.

According to some embodiments of the first aspect of the present invention, an annular cover plate and a middle cover plate are connected to the actuator seat, and the stopper rod is provided with a slider in the slide, the annular cover plate covering an outer side of the slide and the middle cover plate covering an inner side of the slide to define the slider.

According to some embodiments of the first aspect of the present invention, the locking block is provided with a third slope, the hook has a guide surface which cooperates with the third slope to push the locking block, and the locking block is connected with a second spring fixed to the base.

According to some embodiments of the first aspect of the present invention, the switch component is a push rod, the push rod is connected to the base in a sliding manner along the first direction, one end of the push rod is provided with a fourth inclined surface, the fourth inclined surface is used for pushing the locking block, and the other end of the push rod is provided with an operation portion located outside the base.

According to some embodiments of the first aspect of the present invention, one end of the push rod where the fourth slope is disposed is connected to a third spring fixed to the base.

According to some embodiments of the first aspect of the present invention, the switch component is an electric push rod, the electric push rod is arranged along the first direction, and one end of the electric push rod is provided with a fourth inclined surface for pushing the locking block.

According to some embodiments of the first aspect of the present invention, a motor is connected to the base, and a gear set for driving the locking block is connected to the motor, thereby constituting the switch member.

The refrigerator according to the second aspect embodiment of the invention comprises the drawer assembly according to the first aspect embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a drawer assembly according to some embodiments of the first aspect of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the drawer assembly of FIG. 1 at an initial stage of insertion;

FIG. 4 is a schematic view of the drawer assembly of FIG. 1 pushed into position;

FIG. 5 is a schematic view of the drawer assembly of FIG. 1 shown at the end of its insertion;

FIG. 6 is a schematic view of the actuator seat portion of the drawer assembly of FIG. 1;

FIG. 7 is a schematic view of the actuator mount of the drawer assembly of FIG. 1;

fig. 8 is an exploded schematic view of the drive mount of fig. 7.

The reference numbers are as follows:

the guide device comprises a base 100, a first guide strip 101, an outer guide strip 102, a second guide strip 103, a pressing plate 110, a guide piece 111, a transmission seat 120, a slide way 121, an annular cover plate 122, a middle cover plate 123, a stop rod 130, a sliding block 131 and a surrounding edge 140;

a drawer 200, a push-in stopper 210, and a push-out stopper 220;

the movable rack 310, the first spring 311, the fixed rack 320, the ring gear 330, the outer ring gear 331, the inner ring gear 332, the movable lever 340, the hook 341, the guide surface 3411, the mounting hole 342, the locking block 350, the third inclined surface 351, the second spring 352, the stopper 353, the switch member 360, the fourth inclined surface 361, the operating portion 362, the third spring 363, and the planetary gear 370.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The refrigerator is an electric appliance for providing a low-temperature environment to store food materials and other articles, is popular among people and is widely used. A refrigerator generally has a drawer for placing articles therein, and some of the drawers have an automatic extending function for a user to conveniently take and use. In the related art, the gear and rack kinematic pair is driven by the motor to push the drawer, so that the automatic extending function is realized, the weight of the drawer and the weight of the internal articles are large, the motor with high power is needed, the operation noise of the combination of the motor and the gear and rack kinematic pair is large, the user experience is poor, the production cost is high, and the improvement is needed.

Referring to fig. 1 to 8, an embodiment of a first aspect of the present invention provides a drawer assembly applied to a refrigerator, which can effectively improve operation noise of an automatically extending drawer, reduce production cost, and improve user experience.

The drawer assembly comprises a base 100, a drawer 200 and an energy storage ejection mechanism, wherein a groove for accommodating the drawer 200 is formed in a box body of the refrigerator, the base 100 is connected with the box body of the refrigerator and is located on the lower side of the groove, the drawer 200 is generally in sliding connection with the box body of the refrigerator, a sliding rail is arranged in the box body, the drawer 200 can be pushed in and extended out through the sliding rail, the moving direction of the drawer 200 is defined as a first direction, the drawer 200 is located above the base 100, the drawer 200 and the base 100 can slide relatively along the first direction, the energy storage ejection mechanism is connected to the base 100, the base 100 is provided with a surrounding edge 140 surrounding the energy storage ejection mechanism, and the surrounding edge 140 extends to be close to the drawer 200.

The bottom surface of the drawer 200 is provided with a push stopper 210 and a push stopper 220, and the push stopper 210 and the push stopper 220 are used for matching with an energy storage ejection mechanism. The energy storage ejection mechanism comprises a movable rack 310, a fixed rack 320, a ring gear 330, a movable rod 340, a locking block 350 and a switch component 360, wherein the movable rack 310 and the fixed rack 320 are arranged along a first direction, the movable rack 310 can slide relative to the base 100 along the first direction, the fixed rack 320 is fixed on the base 100, the movable rack 310 is connected with a first spring 311, and the other end of the first spring 311 is limited by the base 100. It is understood that the fixed rack 320 is fixed to the base 100 by fasteners, which may be screws, rivets, pins, etc., and considering that the fixed rack 320 is elongated, it is preferable to use three fasteners, and the three fasteners are spaced apart from each other along the first direction, so that the fixed rack 320 is more stably connected to the base 100. The base 100 is provided with two first guide strips 101, the first guide strips 101 are arranged along a first direction, the movable rack 310 is provided with a guide groove matched with the first guide strips 101, so that the movable rack 310 can slide, the first spring 311 is located in a space between the two first guide strips 101, the two first guide strips 101 play a role in limiting the first spring 311, the first spring 311 is prevented from deviating, the end part of the movable rack 310 and the base 100 are both provided with positioning columns, two ends of the first spring 311 are sleeved on the two positioning columns, and the structure is reliable. The base 100 is further provided with an outer guide strip 102 arranged along the first direction, the side wall of the movable rack 310 abuts against the outer guide strip 102 to serve as a second guide structure, the use reliability is further improved, and the positioning column is located on the side wall of the outer guide strip 102, so that the processing is convenient.

The ring gear 330 is annular, an outer gear ring 331 is formed on the outer side of the ring gear 330, an inner gear ring 332 is formed on the inner side of the ring gear 330, the outer gear ring 331 and the inner gear ring 332 are concentric structures, the number of teeth of the outer gear ring 331 and the number of teeth of the inner gear ring 332 can be equal or unequal, the moving rack 310 and the fixed rack 320 are meshed with the outer gear ring 331 at the same time, and the moving rack 310 and the fixed rack 320 are distributed on two opposite sides of the ring gear 330. It is understood that the ring gear 330 can move and rotate relative to the base 100, the ring gear 330 is held by the moving rack 310 and the fixed rack 320, and the holding is performed by the engagement of the teeth, and further, the base 100 may be connected with the pressing plate 110, and the ring gear 330 is axially held by the pressing plate 110, preventing the ring gear 330 from coming off.

The movable rod 340 is also slidably connected to the base 100 and moves in the first direction, the movable rod 340 is connected to the planetary gear 370, the planetary gear 370 can freely rotate, and the planetary gear 370 is engaged with the ring gear 332. It is understood that, in order to achieve the sliding and guiding of the movable bar 340, two guide pieces 111 arranged in the first direction may be provided at the pressure plate 110, and the two guide pieces 111 sandwich the movable bar 340, thereby defining the moving direction of the movable bar 340. The planetary gear 370 may have a rotation shaft, which is inserted into the mounting hole 342 of the movable rod 340 and can freely rotate; it is also possible that the movable lever 340 is provided with a rotation shaft to which the planetary gear 370 is mounted and can freely rotate.

The locking block 350 is also slidably connected to the base 100, but the moving direction of the locking block 350 is a second direction, the second direction is perpendicular to the first direction, a hook 341 is disposed at one end of the movable rod 340, and when the locking block 350 moves to the locking position, the hook 341 hooks the locking block 350 so as to lock the movable rod 340; when the locking block 350 moves in the reverse direction, the locking block 350 is disengaged from the hook 341, and the movable lever 340 is unlocked. In order to realize the sliding and guiding of the locking block 350, a second guide strip 103 arranged in the second direction is provided on the base 100, and the second guide strips 103 are two and distributed on both sides of the locking block 350, defining the moving direction of the locking block 350.

It will be appreciated that the switch member 360 is used to push the locking block 350 such that the locking block 350 is disengaged from the hook 341 to unlock the movable lever 340.

The pushing block 210 moves along with the drawer 200, the moving rack 310 can be pushed by the pushing block 210, and the first spring 311 is compressed to realize energy storage. The push-out stopper 220 is located in the moving direction of the movable rod 340, and after the movable rod 340 is unlocked, the movable rod 340 can push the push-out stopper 220, so that the drawer 200 is extended.

The use process of the drawer assembly is as follows: as shown in fig. 3, a user puts an object into the drawer 200, then pushes the drawer 200 into the refrigerator, the drawer 200 pushes the movable rack 310 of the energy storage ejection mechanism through the push stopper 210, and at the same time, the first spring 311 is compressed to realize energy storage, the movable rack 310 which moves is matched with the fixed rack 320, so as to drive the ring gear 330 to rotate, the planet gear 370 rotates along with the ring gear 330, and simultaneously, the movable rod 340 is driven to move towards the locking block 350; as shown in fig. 4, when the drawer 200 is pushed into position, the hook 341 of the movable lever 340 catches the locking block 350 to lock the movable lever 340, and the first spring 311 is compressed to store energy.

When a user needs to take out the articles in the drawer 200, the user pushes the locking block 350 through the switch component 360, the locking block 350 is separated from the hook 341, so as to unlock the movable rod 340, the first spring 311 loses the limit and releases energy, under the pushing of the first spring 311, the movable rack 310 moves in the reverse direction, the ring gear 330 is driven to rotate in the reverse direction, the planetary gear 370 rotates along with the ring gear 330, meanwhile, the movable rod 340 is driven to move in the direction away from the locking block 350, the pushing-out stop block 220 is pushed through the movable rod 340, so that the drawer 200 automatically extends out, the user can take out the articles in the drawer 200 conveniently, the user does not need to pull out the drawer 200 forcibly, and the operation is simplified. The drawer component adopts energy storage pop-up mechanism as power mechanism, relies on the restoring force of first spring 311 to promote drawer 200 and stretches out, and the running noise is less, promotes user experience, need not adopt powerful motor moreover, reduction in production cost helps improving the product competitiveness of refrigerator.

It can be understood that, since the movable rack 310 is engaged with the outer gear ring 331, the planet gear 370 is engaged with the inner gear ring 332, the number of teeth of the planet gear 370 is less than that of the inner gear ring 332, and the diameter of the planet gear 370 is less than that of the ring gear 330, when the drawer 200 is automatically ejected, the driving force and speed can be amplified through the transmission of the movable rack 310, the ring gear 330 and the planet gear 370, so as to meet the requirement of pushing the drawer 200 and the internal objects thereof, the force for pushing the drawer 200 by a user is small, the use is convenient, and the automatic extending function of the drawer 200 is fast and reliable.

Referring to fig. 2 to 5, it can be understood that the movable lever 340 is provided with a plurality of mounting holes 342, the mounting holes 342 are used for mounting the rotation shafts of the planetary gears 370, and the plurality of mounting holes 342 are arranged in the first direction and are equally spaced, or are unequally spaced. By mounting the planet gear 370 to different mounting holes 342 and changing the relative position of the movable rod 340 and the movable rack 310, the stroke of the movable rack 310 can be adjusted, and the versatility is improved.

Referring to fig. 2 to 5, it can be understood that the base 100 is connected to the driving seat 120, the driving seat 120 is connected to the movable stopper 130, the pushing stopper 210 pushes the moving rack 310 through the stopper 130, and the stopper 130 is used to transmit the pushing force, so that the pushing stopper 210 and the moving rack 310 can be prevented from directly colliding, and the loss can be reduced.

Referring to fig. 6 to 8, it can be understood that the transmission seat 120 is provided with an annular slide way 121, one end of the blocking rod 130 is installed on the slide way 121, and the blocking rod 130 can move along the slide way 121, and in the second direction, the moving rack 310 crosses the slide way 121 towards the first end surface of the pushing stopper 210, so that the pushing stopper 210 pushes the blocking rod 130 to be able to contact the first end surface of the moving rack 310, thereby pushing the moving rack 310, and improving the reliability of use.

It can be understood that the first end face includes a first inclined surface, the push stopper 210 is provided with a second inclined surface, the first inclined surface and the second inclined surface are arranged in parallel or nearly in parallel, both the first inclined surface and the second inclined surface can abut against the stopper rod 130, and the push stopper 210 and the moving rack 310 are staggered from each other in the axial direction of the stopper rod 130. When the drawer 200 is pushed in, the first inclined surface and the second inclined surface abut against the stop lever 130 at the same time, the stop lever 130 is pushed to move from the end of the slide rail 121 far away from the first spring 311 to the end close to the first spring 311, and at this time, the hook 341 of the movable rod 340 hooks the locking block 350. The slide rail 121 is provided with an inclined section, the stop lever 130 is positioned at the inlet of the inclined section, under the action of the second inclined plane, the stop lever 130 enters the inclined section, then the stop lever 130 enters the other side of the slide rail 121 along the inclined section, the first inclined plane is not in contact with the stop lever 130 to form a gap, because the planet gear 370 and the ring gear 330 have a slight virtual position, the first spring 311 pushes the movable rack 310 to move a slight distance to the pushing block 210, but the pushing block 210 is not in contact with the movable rack 310 (staggered in the axial direction of the stop lever 130), so that the movable rack 310 is prevented from ejecting the drawer 200, meanwhile, the drawer 200 is prevented from being buckled with a refrigerator body, and the use stability is improved. The drawer 200 and the box body are usually connected in a magnetic attraction or a buckling manner, and the movable rack 310 cannot prop against the drawer 200, so that the drawer 200 and the box body are more stably connected and have better sealing performance.

Referring to fig. 7 and 8, it can be understood that the driving seat 120 is connected with an annular cover plate 122 and a middle cover plate 123, the stopper rod 130 is provided with a slide block 131 positioned in the slide rail 121, the annular cover plate 122 covers the outer side of part of the slide rail 121 and the middle cover plate 123 covers the inner side of part of the slide rail 121, the stopper rod 130 and the slide block 131 are both cylindrical, the diameter of the slide block 131 is slightly smaller than the width of the slide rail 121, so that the stopper rod 130 can slide in the gap between the annular cover plate 122 and the middle cover plate 123, and the annular cover plate 122 and the middle cover plate 123 are used for limiting the slide block 131, so that the slide block 131 is prevented from falling out of the slide rail 121, and the stopper rod is reliable and durable.

Referring to fig. 2 to 5, it can be understood that the locking block 350 is provided with a third inclined surface 351, the hook 341 has a guide surface 3411, the third inclined surface 351 is parallel to and can abut against the guide surface 3411, the locking block 350 is connected with a second spring 352 fixed to the base 100, when the movable lever 340 moves toward the locking block 350, the guide surface 3411 of the hook 341 pushes the locking block 350 through the third inclined surface 351 while compressing the second spring 352, and then the hook 341 passes over the locking block 350, the second spring 352 pushes the locking block 350 to return, thereby defining the hook 341, and locking the movable lever 340 is achieved. The locking process is automatic, the operation of a user is simplified, the convenience is improved, and the user experience is improved. One end of the locking block 350, which faces away from the movable rod 340, is provided with a limiting portion 353, and the limiting portion 353 is used for limiting the maximum stroke of the movable rod 340 and preventing the movable rod 340 from moving excessively to affect the engagement between the fixed rack 320 and the ring gear 330.

Referring to fig. 2 to 5, it can be understood that the switch member 360 may be a push rod, the push rod is slidably connected to the base 100 along the first direction, one end of the push rod is provided with a fourth inclined surface 361, the fourth inclined surface 361 abuts against the locking block 350, and the other end of the push rod is provided with an operation portion 362 located outside the base 100. When a user needs to take out an article in the drawer 200, the push rod is pushed by the operating portion 362, and the push rod pushes the locking block 350 to move through the fourth inclined surface 361, so that the movable rod 340 is unlocked, and the operation is simple and easy to use. When the user releases the push rod, the second spring 352 pushes the locking block 350 to automatically reset. The locking block 350 may be provided with an inclined surface matching with the fourth inclined surface 361, and the push rod may push the locking block 350 more smoothly, thereby improving the reliability of use.

It is understood that one end of the push rod provided with the fourth inclined surface 361 is connected with a third spring 363, the third spring 363 is arranged along the first direction, one end of the third spring 363 is connected with the push rod, and the other end is fixed to the base 100. The user pushes the push rod through the operation part 362, the push rod pushes the locking block 350 to move through the fourth inclined surface 361, at this time, the third spring 363 is compressed, and when the user loosens the push rod, the third spring 363 pushes the push rod to automatically reset, so that the use is more convenient.

It is understood that the switch member 360 may also be a power push rod (not shown) disposed along the first direction, one end of which is also provided with a fourth inclined surface, and the power push rod pushes the locking block 350 to move through the fourth inclined surface 361, so as to unlock the movable rod 340. The electric push rod does not need to output large power, the model with smaller power can be selected, and the cost and the running noise can be controlled at a lower level.

It is understood that the switch component 360 can also be a motor (not shown in the figures) installed on the base 100, the motor drives the locking block 350 through a gear set, and the gear set can adopt a combination of a gear and a rack to push the locking block 350 to lock the movable rod 340 and unlock the movable rod 340, so as to achieve the purpose of automatic operation. The power requirement for pushing the locking block 350 is low, the motor can be of a type with low power, and the cost and the running noise can be controlled at a low level.

The second aspect of the present invention provides a refrigerator, which includes the drawer assembly of the first aspect, the drawer assembly includes a base 100, a drawer 200, and an energy storage ejecting mechanism, a push-in stop 210 and a push-out stop 220 are disposed on a bottom surface of the drawer 200, and the push-in stop 210 and the push-out stop 220 are used for cooperating with the energy storage ejecting mechanism. The energy storage ejection mechanism comprises a movable rack 310, a fixed rack 320, a ring gear 330, a movable rod 340, a locking block 350 and a switch component 360, wherein the movable rack 310 and the fixed rack 320 are arranged along a first direction, the movable rack 310 can slide relative to the base 100 along the first direction, the fixed rack 320 is fixed on the base 100, the movable rack 310 is connected with a first spring 311, and the other end of the first spring 311 is limited by the base 100. The ring gear 330 is annular, an outer gear ring 331 is formed on the outer side of the ring gear 330, an inner gear ring 332 is formed on the inner side of the ring gear 330, the outer gear ring 331 and the inner gear ring 332 are concentric structures, the number of teeth of the outer gear ring 331 and the number of teeth of the inner gear ring 332 can be equal or unequal, the moving rack 310 and the fixed rack 320 are meshed with the outer gear ring 331 at the same time, and the moving rack 310 and the fixed rack 320 are distributed on two opposite sides of the ring gear 330. The movable rod 340 is also slidably connected to the base 100 and moves in the first direction, and the movable rod 340 is connected with a planetary gear 370, the planetary gear 370 can freely rotate, and the planetary gear 370 is engaged with the inner gear ring 332. The locking block 350 is also slidably connected to the base 100, but the moving direction of the locking block 350 is a second direction, the second direction is perpendicular to the first direction, a hook 341 is disposed at one end of the movable rod 340, and when the locking block 350 moves to the locking position, the hook 341 hooks the locking block 350 so as to lock the movable rod 340; when the locking block 350 moves in the reverse direction, the locking block 350 is disengaged from the hook 341, and the movable lever 340 is unlocked. The switch member 360 is used to push the locking block 350 so that the locking block 350 is disengaged from the hook 341 to unlock the movable lever 340.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A drawer assembly, comprising:

the base is used for connecting a refrigerator body of the refrigerator;

the drawer is positioned above the base and can move along a first direction relative to the base, and a pushing stop block are arranged on the bottom surface of the drawer;

the energy storage ejection mechanism is connected to the base and comprises a movable rack, a fixed rack, a ring gear, a movable rod, a locking block and a switch component, the movable rack is connected to the base in a sliding mode along the first direction, a first spring fixed to the base is connected to the movable rack, the fixed rack is fixed to the base and arranged along the first direction, the ring gear is provided with an outer gear ring and an inner gear ring, the movable rack and the fixed rack are meshed with two opposite sides of the outer gear ring, the movable rod is connected to the base in a sliding mode along the first direction, the movable rod is connected with a planet gear, the planet gear is meshed with the inner gear ring, the locking block is connected to the base in a sliding mode along the second direction, the second direction is perpendicular to the first direction, a hook is arranged at one end of the movable rod, the locking block can limit the hook to lock the movable rod, and the switch component is used for pushing the locking block to unlock the movable rod;

the pushing stop block is used for pushing the movable rack and compressing the first spring, and the unlocked movable rod can push the pushing stop block to enable the drawer to extend.

2. The drawer assembly of claim 1, wherein the movable lever is provided with a plurality of mounting holes for mounting the rotation shafts of the planetary gears, the plurality of mounting holes being aligned in the first direction.

3. The drawer assembly of claim 2, wherein the base is connected to a driving seat, the driving seat is connected to a movable stopper, and the pushing stopper pushes the moving rack through the stopper.

4. A drawer assembly according to claim 3 wherein the actuator mount is provided with an annular slide in which one end of the lever is located and movable along the slide, the moving rack spanning the slide in the second direction towards the first end face of the thrust block.

5. The drawer assembly of claim 4, wherein the first end surface includes a first inclined surface, the advancing stopper is provided with a second inclined surface adapted to the first inclined surface, the first inclined surface and the second inclined surface can abut against the lever, and the advancing stopper is staggered from the moving rack in an axial direction of the lever.

6. The drawer assembly of claim 4, wherein an annular cover plate and a center cover plate are attached to the actuator mount, the lever being provided with a slider in the slide, the annular cover plate covering an outer side of the slide and the center cover plate covering an inner side of the slide to define the slider.

7. The drawer assembly of claim 2, wherein the locking block is provided with a third ramp, the hook has a guide surface that engages the third ramp to push the locking block, and the locking block is connected to a second spring that is fixed to the base.

8. The drawer assembly of claim 7, wherein the switch component is a push rod, the push rod is slidably connected to the base along the first direction, one end of the push rod is provided with a fourth inclined surface, the fourth inclined surface is used for pushing the locking block, and the other end of the push rod is provided with an operating part located outside the base.

9. The drawer assembly of claim 8, wherein the end of the push rod on which the fourth ramp is disposed is connected to a third spring secured to the base.

10. The drawer assembly of claim 7, wherein the switch member is a power push rod disposed along the first direction, and one end of the power push rod is provided with a fourth slope for pushing the locking block.

11. The drawer assembly of claim 2, wherein a motor is connected to the base, and a gear set for driving the locking block is connected to the motor, thereby constituting the opening and closing member.

12. Refrigerator, characterized in that it comprises a drawer assembly according to any one of claims 1 to 11.