CN112211522A - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN112211522A CN112211522A CN201910631600.0A CN201910631600A CN112211522A CN 112211522 A CN112211522 A CN 112211522A CN 201910631600 A CN201910631600 A CN 201910631600A CN 112211522 A CN112211522 A CN 112211522A
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- door body
- push rod
- refrigerator
- driving wheel
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- 230000007246 mechanism Effects 0.000 claims abstract description 128
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 239000012634 fragment Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
- E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
- E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators
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- Refrigerator Housings (AREA)
Abstract
The invention discloses a refrigerator, relates to the technical field of refrigeration, and aims to provide a refrigerator which can guarantee the service life of a rotating mechanism through a time delay mechanism. The refrigerator includes that inside is formed with the box of storeroom and the door body of setting at the opening part of storeroom, installs the articulated slab on the box, and the articulated slab passes through the articulated shaft and rotates with the door body to be connected, still includes the switch door gear, and the switch door gear includes: the door body ejection mechanism comprises an ejection mechanism and a rotating mechanism, wherein the ejection mechanism and the rotating mechanism are driven by the same driving mechanism, and the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body and driving the rotating mechanism to move so as to drive the door body to rotate around a hinge shaft; and the delay mechanism is used for delaying the movement of the driving mechanism driving the rotating mechanism from the movement of the driving mechanism driving the ejection mechanism. The refrigerator is used for improving the service performance.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigerator.
Background
Along with the improvement of the living standard of residents, the refrigerator becomes a necessary household appliance product for families, the volume of the refrigerator also begins to be continuously enlarged, the door body of the refrigerator is heavier and heavier, the refrigerator door body is aggravated, people cannot conveniently open the refrigerator door, and particularly, the old and children have a great problem that how to realize easy door opening becomes a trouble for numerous consumers and refrigerator manufacturers.
According to the refrigerator in the prior art, a door opening and closing device is adopted to realize automatic opening and automatic closing of a refrigerator door body, and referring to fig. 1, the door opening and closing device comprises a driving motor (not shown), a driving wheel 03 installed on an output shaft of the driving motor, and a driven wheel 05 meshed with the driving wheel 03 at present, wherein the driven wheel 05 is meshed with a meshing tooth 06 arranged in the circumferential direction of a hinged shaft (used for rotatably connecting the door body 02 and a refrigerator body 01), a push rod 04 is arranged on the refrigerator body 1, and a transmission tooth meshed with the driving wheel 03 is arranged on the push rod 04. The specific process of opening the door body 2 is as follows: the output shaft of the driving motor rotates to drive the driving wheel 03 to rotate, and then the push rod 04 is driven to move towards the door body 01, so that the door body 02 is pushed open, meanwhile, the driving wheel 03 also drives the driven wheel 05 to rotate in the opposite direction, the driven wheel 05 rotates under the action of the meshing teeth on the hinged shaft, so that the door body 02 is driven to rotate around the hinged shaft, and finally the door body 02 is opened.
However, in the door opening and closing device shown in fig. 1, when the driving wheel 03 drives the push rod 04 to move, the driving wheel 03 also drives the driven wheel 04 to rotate, and the rotating driven wheel 04 also generates torque on the meshing teeth on the hinge shaft, because the door seal suction force between the door body 02 and the box body 01 is large, a large force needs to be applied to the door body 02 at the moment of opening the door, and if the driving wheel 03 also drives the driven wheel 04 to rotate at the moment of opening the door, a large torque is applied to the meshing teeth on the hinge shaft, so that the service life of the meshing teeth on the hinge shaft is influenced, the service life of the whole door opening and closing device is finally shortened, and the service performance of the refrigerator is influenced.
Disclosure of Invention
The embodiment of the invention provides a refrigerator, and mainly aims to provide a refrigerator which can guarantee the service life of a rotating mechanism through a time delay mechanism.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the embodiment of the invention provides a refrigerator, which comprises a refrigerator body and a door body, wherein a storage chamber is formed in the refrigerator body, the door body is arranged at an opening of the storage chamber, the door body is rotatably connected with the refrigerator body through a hinge shaft, the refrigerator also comprises a door opening and closing device, and the door opening and closing device comprises:
the door body is driven by the same driving mechanism, and the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body and driving the rotating mechanism to move so as to drive the door body to rotate around the hinge shaft;
the delay mechanism is used for enabling the driving mechanism to drive the rotating mechanism to move later than the driving mechanism drives the ejection mechanism to move.
According to the refrigerator provided by the embodiment of the invention, the ejection mechanism and the rotating mechanism are driven by the same driving mechanism, and the delay mechanism is arranged, so that the movement of the rotating mechanism lags the movement of the ejection mechanism, and further, the ejection mechanism damages the door seal with larger suction force to push the door body open, the driving mechanism capable of outputting larger torque cannot drive the rotating mechanism to move, and further, larger torque cannot act on the rotating mechanism, so that the rotating mechanism cannot be damaged, and the rotating mechanism is protected.
Drawings
Fig. 1 is a schematic structural view of a refrigerator having a door opening and closing apparatus according to the related art;
fig. 2 is an external perspective view of a refrigerator according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is another perspective view of FIG. 2;
FIG. 5 is an enlarged view of FIG. 4 at B;
fig. 6 is a schematic structural diagram of a door opening and closing device according to an embodiment of the present invention;
FIG. 7 is another perspective view of FIG. 6;
FIG. 8 is an exploded view of FIG. 6;
fig. 9 is a schematic view of a connection relationship between a driving mechanism, a delay mechanism and a rotating mechanism according to an embodiment of the present invention;
FIG. 10 is an exploded view of a delay mechanism provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic diagram of a delay mechanism according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a delay mechanism according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a delay mechanism according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a delay mechanism according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of a delay mechanism according to an embodiment of the present invention;
fig. 16 is an exploded view of a driving mechanism for opening and closing a door apparatus according to an embodiment of the present invention;
fig. 17 is a schematic view illustrating a connection relationship between a driving mechanism and an ejection mechanism according to an embodiment of the present invention;
fig. 18 is a top view of an ejection mechanism provided in accordance with an embodiment of the present invention;
fig. 19 is a schematic view illustrating an operating state of an ejection mechanism according to an embodiment of the present invention;
fig. 20a is a working principle diagram of the refrigerator according to the embodiment of the present invention when a door is opened;
fig. 20b is a working principle diagram of closing a door of a refrigerator according to an embodiment of the present invention.
Detailed Description
The refrigerator according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 2 and 3, an embodiment of the present invention provides a refrigerator, including a refrigerator body 1 having a storage chamber formed therein and a door body 2 disposed at an opening of the storage chamber, wherein the door body 2 is rotatably connected to the refrigerator body 1 through a hinge shaft 4, specifically, a hinge plate 3 is mounted on the refrigerator body 1, and the hinge plate 3 is rotatably connected to the door body 2 through the hinge shaft 4. In order to realize the automatic opening and closing of the door body 2, the refrigerator provided by the embodiment of the invention further comprises a door opening and closing device, and referring to fig. 6, fig. 7 and fig. 8, the door opening and closing device comprises: the door body 2 is driven by the same driving mechanism 5, wherein the driving mechanism 5 is used for driving the ejection mechanism to move so as to eject the door body 2, and is used for driving the rotating mechanism to move so as to drive the door body 2 to rotate around the hinge shaft 4, and the delay mechanism is used for enabling the movement of the driving mechanism 5 for driving the rotating mechanism to lag behind the movement of the driving mechanism 5 for driving the ejection mechanism.
That is, when the driving mechanism 5 drives the ejection mechanism to move, the driving mechanism does not drive the rotation mechanism to move at the same time, but lags behind the movement of the ejection mechanism.
The door 2 of the refrigerator needs to go through two stages in the opening process: firstly, the larger suction force of the door seal between the door body 2 and the box body 1 is destroyed to jack the door body 2 open (the ejection mechanism executes), then the door body 2 rotates around the hinge shaft 4 (the rotation mechanism executes), and finally the door body 2 is opened. In the process of destroying the suction force of the door seal between the door body 2 and the box body 1, the driving mechanism needs to output larger torque to push the door body open, but once the suction force of the door seal is destroyed, the required torque is smaller when the door body 2 rotates around the hinged shaft 4. If the ejection mechanism also drives the rotating mechanism to move in the process of damaging the suction force of the door seal, a large torque is generated on the rotating mechanism, so that certain damage can be caused on the rotating mechanism, and the service life of the rotating mechanism is further reduced.
Referring to fig. 6, the drive mechanism 5 includes a drive motor 501 and a drive pulley 504 connected to an output shaft of the drive motor 501; referring to fig. 7 and 3, the ejection mechanism includes: the push rod 7 is characterized in that the push rod 6 is arranged on the mounting seat 6 in a sliding mode, the sliding direction of the push rod 7 is parallel to the thickness direction L2 of the door body 2, and the push rod 7 is provided with transmission teeth which are arranged along the extending direction of the push rod 7 and meshed with the driving wheel 504; referring to fig. 7 and 8, the rotation mechanism includes: a driven wheel 8, the driven wheel 8 is meshed with the driving wheel 504, and the hinged shaft 4 is provided with meshing teeth 401 which are arranged along the circumferential direction of the hinged shaft and are meshed with the driven wheel 8 (in addition, a driving wheel meshed with the driven wheel 8 can also be fixed on the hinged shaft); the time delay mechanism is used for delaying the rotation of the driving wheel 504 driving the driven wheel 8 from the movement of the driving wheel 504 driving the push rod 7. That is to say, in the process that the driving wheel 504 drives the push rod 7 to move so as to destroy the door seal suction force to push the door body 2 open, the driving wheel 504 cannot generate large torque to the driven wheel 8 through the time delay mechanism, and further cannot generate large torque to the engaging teeth 401, when the push rod 7 pushes the door body 2 open to a certain angle, the driving wheel 504 can drive the driven wheel 8 to rotate so as to drive the door body 2 to continue to rotate around the hinge shaft 4, and thus the engaging teeth 401 can be protected.
Referring to fig. 8 and 9, the delay mechanism comprises a delay gear 9, the rotation axis of the driven wheel 8 is collinear with the rotation axis of the delay gear 9, the driven wheel 8 is connected with the delay gear 9 through a second connecting shaft 11, the delay gear 9 is meshed with the driving wheel 504, and the driven wheel 8 is in clearance fit with the second connecting shaft 11.
Referring to fig. 10, a first projection 902 is formed on a surface of the delay gear 9 facing the driven wheel 8, the first projection 902 has a first contact surface P1 and a second contact surface R1 facing each other, a second projection 801 is formed on a surface of the driven wheel 8 facing the delay gear 9, and the second projection 801 has a third contact surface P2 and a fourth contact surface R2 facing each other; under the condition that the driving wheel 504 drives the ejection mechanism to move and drives the delay gear 9 to move along the first direction, the first lug 902 moves towards the stationary second lug 801 along the first direction, and under the condition that the first abutting surface P1 abuts against the third abutting surface P2, the driving wheel 504 drives the delay gear 9 and the driven wheel 8 to synchronously rotate along the first direction; under the condition that the driving wheel 504 drives the ejection mechanism to move and drives the delay gear 9 to move along the second direction, the first protrusion 901 moves towards the stationary second protrusion 801 along the second direction, and under the condition that the second abutting surface R1 abuts against the fourth abutting surface R2, the driving wheel 504 drives the delay gear 9 and the driven wheel 8 to synchronously rotate along the second direction, wherein the first direction is opposite to the second direction.
The operation of the delay mechanism will be explained below with reference to fig. 11 to 15.
Referring to fig. 11, when the delay gear 9 and the driven wheel 8 are at the initial position, the first contact surface P1 and the third contact surface R1 are not in contact, and the second contact surface P2 and the fourth contact surface R2 are not in contact. Referring to fig. 11 to 12, the delay gear 9 is driven by the driving wheel 504 to rotate counterclockwise, and the driven wheel 8 is not driven to rotate synchronously in the process of rotating the delay gear 9 due to the clearance fit between the driven wheel 8 and the second connecting shaft 11, and referring to fig. 12, when the delay gear 9 rotates until the first abutting surface P1 contacts with the third abutting surface R1, the rotating delay gear 9 drives the driven wheel 8 to rotate counterclockwise synchronously (fig. 12 to 13), and the driven wheel 8 generates torque on the meshing teeth 401.
In fig. 13 to 14, the delay gear 9 is driven by the driving wheel 504 to rotate clockwise, the first abutting surface P1 and the third abutting surface R1 which are in contact with each other are separated, and the driven wheel 8 cannot rotate synchronously with the delay gear 9, in fig. 14 to 15, when the delay gear 9 rotates until the second abutting surface P2 is in contact with the fourth abutting surface R2, the rotating delay gear 9 drives the driven wheel 8 to rotate synchronously clockwise.
In order to further improve the compactness of the connection between the delay gear 9 and the driven wheel 8, referring to fig. 10, a groove 901 is formed on the surface of the delay gear 9 opposite to the driven wheel 8, the first projection 902 is located in the groove 901, and the second projection 801 is located in the groove 901 after the driven wheel 8 is buckled with the delay gear 9. In this way, the opposite surfaces of the driven wheel 8 and the delay gear 9 are tightly attached, so that the structure is more compact and the occupied space is smaller.
The delay mechanism that this embodiment provided simple structure, job stabilization can make rotary mechanism's rotation lag behind ejection mechanism's motion, and then plays the guard action to rotary mechanism.
In order to improve the appearance beauty of the refrigerator, referring to fig. 2 and 3, and fig. 4 and 5, an extension part exceeding the top of the refrigerator body 1 is formed at the top of the door body 2, a mounting cavity 201 is formed in the extension part, and the door opening and closing device is arranged in the mounting cavity 201. In the field, the hinge plate 3 is generally installed on the top of the refrigerator body 1, in order to prevent the hinge plate 3 from being obviously viewed when the refrigerator is viewed from the front side of the refrigerator, the top of the door body 2 is higher than the top of the refrigerator body 1, so that an extending part for shielding the hinge plate 3 is formed above a door seal of the door body 2, and the hinge plate 3 is shielded by the extending part, thereby improving the appearance attractiveness of the refrigerator. In an example, the top of the door body 2 is about 25mm higher than the top of the box body 1.
According to the door opening and closing device provided by the embodiment of the invention, the extension part of the existing door body 2, which is higher than the top of the refrigerator body 1, is fully utilized, and the door opening and closing device is arranged in the installation cavity 201 formed in the extension part, so that the arrangement position of the door opening and closing device is more hidden, and the extension part is positioned above the door seal of the door body, therefore, the refrigerator provided by the embodiment of the invention has the advantages that the sealing effect between the door body 2 and the refrigerator body 1 is ensured, and the door opening and closing device is exposed to the outside on the premise that the refrigerator has an automatic door opening and closing function, and the appearance attractiveness of the refrigerator is.
When the door opening and closing device is arranged in the installation cavity 201, referring to fig. 3 and 6, the output shaft of the driving motor 501 is parallel to the width direction L1 of the door body 2, and the axis of the driving wheel 504 is parallel to the height direction L3 of the door body 2; that is, the driving motor 501 is horizontally disposed in the installation cavity 201, so that a large space in the width direction of the door body 2 is also fully utilized. Since the output shaft of the driving motor 501 is parallel to the width direction L1 of the door body 2, and the axis of the driving wheel 504 is parallel to the height direction L3 of the door body 2, a steering mechanism is further needed in the door opening and closing device provided in the embodiment of the present invention, that is, the driving wheel 504 is connected to the output shaft of the driving motor 501 through the steering mechanism, and the steering mechanism is used for converting the rotation of the output shaft of the driving motor 501 around the width direction L1 of the door body 2 into the rotation of the driving wheel 504 around the height direction L3 of the door body 2.
In some embodiments, referring to fig. 8, 16 and 17, the steering mechanism comprises: a first bevel gear 505 and a second bevel gear 506, wherein the first bevel gear 505 is mounted on the output shaft of the driving motor 501, the second bevel gear 506 is engaged with the first bevel gear 505, the driving wheel 504 is connected with the second bevel gear 506 through a second connecting shaft 507, and the axis of the second bevel gear 506 is perpendicular to the axis of the first bevel gear 505. Specifically, the axis of the first bevel gear 505 is parallel to the output shaft of the driving motor 501, the axis of the second bevel gear 506 is perpendicular to the axis of the first bevel gear 505, and the axis of the driver 504 is parallel to the axis of the second bevel gear 506. The steering mechanism has the following steering principle: when the output shaft of the driving motor 501 drives the first bevel gear 505 to rotate, the first bevel gear 505 drives the second bevel gear 506 to rotate, and since the axis of the second bevel gear 506 is perpendicular to the axis of the first bevel gear 505, the horizontal rotation of the first bevel gear 505 is converted into the vertical rotation of the second bevel gear 506 and the driving wheel 504.
Since the second bevel gear 506 needs to drive the driving wheel 504 to rotate synchronously through the second connecting shaft 507, for example, the cross section of the second connecting shaft 507 for connecting the second bevel gear 506 and the driving wheel 504 may be a D-shaped structure, and referring to fig. 16, the cross section of the hole 5041 for installing the second connecting shaft 507 of the corresponding driving wheel 504 is also a D-shaped structure; as another example, the cross section of the second connecting shaft 507 for connecting the second bevel gear 506 and the driver 504 may be a kidney-shaped structure, and the cross section of the hole 5041 of the corresponding driver 504 for installing the second connecting shaft 507 is also a kidney-shaped structure. Certainly, the cross section of second connecting axle 507 can also adopt other different nature structures, compares the second connecting axle that the cross section is circular structure, adopts the second connecting axle 507 that the cross section is D shape structure or waist shape structure can prevent effectively that second bevel gear 506 from driving action wheel 504 when rotating, takes place the phenomenon of skidding between the two to effectively ensure both synchronous rotations, and then guarantee whole switch door gear's job stabilization nature.
Because the push rod 7 is also arranged in the installation cavity 201, in order to facilitate the push rod 7 to apply thrust to the box body 1, referring to fig. 3, a yielding hole 202 for the push rod 7 to extend out is formed on the side wall of the door body 2 close to the box body 1. When the door body 2 needs to be opened, the push rod 7 extends out of the avoiding hole 202, and when the door body 2 is closed, the push rod 7 contracts into the mounting cavity 201 along the avoiding hole 202, so that the attractive appearance of the whole refrigerator is guaranteed.
In order to make the whole door opening and closing device more compact, referring to fig. 8, the mounting seat 6 includes a first mounting portion 601 and a second mounting portion 602 which are vertically arranged, the driving mechanism can be fixed on the first mounting portion 601, and the push rod 7 is slidably mounted on the second mounting portion 602. Therefore, the installation position is provided for the driving mechanism and the ejection mechanism through the installation seat 6, so that the structure of the whole door opening and closing device is centralized as much as possible, and the occupied space is reduced.
For example, referring to fig. 7, the second mounting portion 602 of the mounting seat 6 is provided with a guide rib, the corresponding push rod 7 is provided with a guide groove, and the sliding of the push rod 7 is realized by the cooperation of the guide groove and the guide rib. Of course, the push rod 7 can be slidably mounted on the mounting seat 6 by using other sliding structures, preferably the sliding structure shown in fig. 7, because the guiding rib and the guiding groove have simple structures and the manufacturing process is also simple.
In order to prevent the push rod 7 from sliding out of the mounting seat 6 in the sliding process, the door opening and closing device provided by the embodiment of the invention further comprises a limiting structure, and the limiting structure is used for preventing the push rod 7 from sliding out of the mounting seat 6. For example, referring to fig. 18 and 19, the limiting structure includes a first limiting structure 12 and a second limiting structure 13 disposed on the push rod 7, the first limiting structure 12 and the second limiting structure 13 are disposed along the extending direction of the push rod 7, and referring to fig. 19, in a case that the driving wheel 504 drives the push rod 7, the first limiting structure 12 and the second limiting structure 13 to move towards a direction L22 close to the box 1, the first limiting structure 12 may abut against a side of the mounting seat 6 close to the box 1, so as to prevent an end of the push rod 7 far from the box 1 from sliding out of the side of the mounting seat 6 close to the box 1; referring to fig. 18, in a case that the driving wheel 504 drives the push rod 7, the first limiting structure 12 and the second limiting structure 13 to move towards the direction L21 away from the box body 1, the second limiting structure 13 may abut against one side of the mounting seat 6 away from the box body 1 to prevent the end of the push rod 7 away from the box body 1 from sliding out of the side of the mounting seat 6 away from the box body 1.
Specifically, referring to fig. 18, when the push rod 7 is retracted on the mounting seat 6, when the driving wheel 504 rotates counterclockwise, the second limiting structure 13 abuts against one side of the mounting seat 6, which is away from the box 1, and under the action of the second limiting structure 13, the push rod 7 is stationary, but when the driving wheel 504 rotates clockwise, the push rod 7 can be driven to extend out, so that when the driving wheel 504 drives the push rod 7 extending out of the mounting seat 6 to retract, the push rod 7 can be prevented from sliding out of the mounting seat 6 in the retracting process through the second limiting structure 13. Referring to fig. 12, when the push rod 7 extends out of the mounting seat 6, the first limiting structure 12 abuts against one side of the mounting seat 6 close to the box body, when the driving wheel 504 rotates counterclockwise, the push rod 7 can be driven to contract, and when the driving wheel 504 rotates clockwise, the push rod 7 is stationary under the action of the first limiting structure 12, so that when the driving wheel 504 drives the contracted push rod 7 to extend out, the push rod 7 can be prevented from sliding out of the mounting seat 6 through the first limiting structure 12 in the extending process.
Adopt first limit structure 12 and second limit structure 13 as limit structure, not only simple structure implements the convenience. In addition, the first limiting structure 12 and the second limiting structure 13 can be made of elastic materials, and the first limiting structure 12 and the second limiting structure 13 made of elastic materials can also achieve the following technical effects: referring to fig. 18, when the driving wheel 504 drives the push rod 7 extending out of the mounting seat 6 to contract along the direction L21, under the driving of the driving motor, along with the counterclockwise continuous rotation of the driving wheel 504, the driving wheel 504 will disengage from the driving teeth M at the extreme edge of the driving teeth of the push rod 7, so that the driving wheel 504 cannot engage with the driving teeth on the push rod 7, if the driving wheel 504 rotates clockwise again, and the push rod 7 needs to be driven to move along the direction opposite to the direction L21, because the driving wheel 504 already disengages from the driving teeth on the push rod 7, it is difficult to drive the push rod 7 to move along the opposite direction, however, if the second limit structure 13 made of elastic material is adopted as the limit structure, when the second limit structure 13 moves synchronously with the push rod 7 and the second limit structure 13 contacts with the edge of the mounting seat 6, under the elastic force of the second limit structure 13, the push rod 7 will be driven to move along the direction opposite to the direction L21 for, this ensures that the driving wheel 504 is engaged with the driving gear M on the push rod 7, thereby ensuring that the push rod 7 is smoothly driven to move when the driving wheel 504 rotates clockwise.
Similarly, referring to fig. 19, when the driving wheel 504 drives the push rod 7 retracted on the mounting seat 6 to extend along the direction L22, under the driving of the driving motor, along with the clockwise continuous rotation of the driving wheel 504, the driving wheel 504 will disengage from the driving teeth N at the edge of the driving teeth of the push rod 7, so that the driving wheel 504 cannot engage with the driving teeth on the push rod 7, if the driving wheel 504 rotates counterclockwise again, and it is necessary to drive the push rod 7 to move along the direction opposite to the direction L22, because the driving wheel 504 has disengaged from the driving teeth on the push rod 7, it is difficult to drive the push rod 7 to move along the opposite direction, however, if the first position-limiting structure 12 made of elastic material is used as the position-limiting structure, when the first position-limiting structure 12 moves synchronously with the push rod 7 and the first position-limiting structure 12 contacts with the edge of the mounting seat 6, under the elastic force of the first position-, the push rod 7 is driven to move for a certain distance in the direction opposite to the direction of the L22, so that the driving wheel 504 is meshed with the transmission teeth N on the push rod 7, and the push rod 7 is driven to move smoothly when the driving wheel 504 rotates counterclockwise.
Therefore, the first limiting structure 12 and the second limiting structure 13 made of elastic materials not only limit the movement of the push rod 7, but also ensure the continuity of the movement of the whole push rod 7 and the driving wheel 504.
Generally, when the door body 2 is jacked to alpha is 10-12 degrees by the push rod 7, alpha is the rotation angle of the door body 2, the push rod 7 stops moving, in specific implementation, the number of teeth of the transmission teeth on the push rod 7 can be determined according to the rotation angle of the door body 2 under the action of the push rod 7, the number of teeth of the transmission teeth on the push rod 7 is not limited, and any number of teeth is within the protection range of the invention.
Referring to fig. 3 and 9, when the driven wheel 8 in the rotating mechanism is disposed in the mounting cavity 201, the rotating mechanism specifically works according to the following principle: when the driving wheel 504 rotates, the driven wheel 8 is driven to rotate in the opposite direction, and the rotating driven wheel 8 transmits the acting force to the engaging teeth 401, but since the engaging teeth 401 are formed on the hinge shaft 4, the engaging teeth 401 apply a reaction force to the driven wheel 504 to drive the door body 2 to rotate around the hinge shaft 4.
According to the refrigerator provided by the embodiment of the invention, when the driving motor 501 is electrified, the driving motor 501 can drive the driving wheel 504 to rotate, so that the push rod 7 and the driven wheel 8 are driven to move; if the door body 2 needs to be opened or closed, but the driving motor 501 is not powered on, the door body 2 needs to be opened or closed manually, and when the door body 2 is pulled manually, the large transmission resistance between the output shaft of the driving motor 501 and the driving wheel 504 needs to be overcome, so that when the driving motor 501 is not powered on, and the door body 2 is opened or closed manually, physical strength is consumed, and the user experience is obviously reduced.
In order to overcome the inconvenience caused by the non-energization of the driving motor 501, in some embodiments, referring to fig. 6, a clutch 503 is installed on the output shaft of the driving motor 501, in the case that the driving motor 501 and the clutch 503 are de-energized, the clutch 503 prevents the driving wheel 504 from driving the output shaft of the driving motor 501 to rotate, and in the case that the driving motor 501 and the clutch 503 are energized, the driving motor 301 drives the driving wheel 504 to rotate through the clutch. That is to say, when the driving motor 501 and the clutch 503 are powered off, the pulling force for pulling the door body 2 will not be transmitted to the output shaft of the driving motor 501, so that the transmission resistance transmitted from the driving wheel 504 to the driving motor 501 does not need to be overcome, and the physical force for pulling the door body by hand is reduced.
The clutch 503 has various structures, for example, referring to fig. 16, the clutch includes a clutch body having a friction surface 5031 and a friction plate 5032 engaged with the friction surface 5031, and when the clutch is de-energized, the friction plate 5032 is separated from the friction surface 5031 and is engaged when the clutch is energized. The specific working process is as follows: when the driving motor 501 and the clutch 503 are both powered on, the friction plate 5032 is attached to the friction surface 5031, and the output shaft of the driving motor 501 drives the driving wheel 504 to rotate through the clutch 503, so as to drive the ejection mechanism and the rotating mechanism to open or close the door body 2; when the driving motor 501 and the clutch 503 are both powered off, the friction plate 5032 is separated from the friction surface 5031, and when the door body 2 is pulled manually, the friction plate 5032 is separated from the friction surface 5031, so that the torque of the driving wheel 504 is not transmitted to the output shaft of the driving motor 501, and the pulling force or the pushing force acting on the door body 2 is reduced, and the door body is opened and closed easily. Therefore, the refrigerator provided by the embodiment of the invention can be used for easily opening and closing the door body when the driving motor is electrified and can be used for easily opening and closing the door body when the driving motor is not electrified.
If the door opening and closing device provided by the embodiment of the present invention includes a steering mechanism, the clutch 504 is connected to a first bevel gear 505 of the steering mechanism.
In order to realize automatic opening and closing of the door body with ease and increased output torque, referring to fig. 16, the driving mechanism 5 according to the embodiment of the present invention further includes a transmission 502, the transmission 502 is mounted on the output shaft of the driving motor 501, the transmission 502 is used to increase the torque of the output shaft of the driving motor 501, the output end of the transmission 502 is connected to the driving wheel 504, and if the door opening and closing device according to the embodiment of the present invention includes a steering mechanism, the transmission is connected to the first bevel gear 505 of the steering mechanism. Of course, if the switch device provided by the embodiment of the present invention further includes the clutch 503, the output end of the transmission 502 is connected to the clutch 503.
Referring to fig. 7 and 8, the second bevel gear 506, the driving gear 504, the delay gear 9 and the driven gear 8 are all arranged on the second mounting portion 602 of the mounting seat 6, so that the mounting seat 6 carries all the structures of the door opening and closing device, the whole door opening and closing device is more compact, and the assembly and the maintenance are convenient.
In order to detect the rotation angle of the door body 2, the door opening and closing device provided by the embodiment of the invention further comprises an angle detection element and a control unit, wherein the angle detection element detects the rotation angle of the door body, the input end of the control unit is connected with the angle detection element, the output end of the control unit is connected with the driving mechanism, the angle detection element detects a detection signal of the rotation angle of the door body and transmits the detection signal to the control unit, and the control unit controls the rotation of the driving mechanism. By way of example, the angle detection element may be an angle sensor. The mounting position of the angle sensor has various cases, for example, referring to fig. 7, the angle sensor 10 is mounted on a second connecting shaft for connecting the delay gear 9 and the driven wheel 8; as another example, the angle sensor is mounted on the hinge shaft 4.
It should be noted that: to facilitate the clear clockwise and counterclockwise directions in fig. 20a and 20b, "S" represents clockwise and "N" represents counterclockwise in fig. 20a and 20 b.
The process of opening the door body 2 is described in detail with reference to fig. 20 a: the output shaft of the driving motor 501 rotates counterclockwise to drive the first bevel gear 505 to rotate counterclockwise, so as to drive the second bevel gear 506 to rotate clockwise, the clockwise second bevel gear 506 drives the driving wheel 504 to rotate clockwise, and further drives the push rod 7 to slide towards the box body until the push rod contacts with the box body and acts thrust on the box body, the door body is opened under the reaction, meanwhile, the driving wheel 504 also drives the delay gear 9 to rotate counterclockwise, because the driven wheel 8 and the second connecting shaft for connecting the delay gear 9 and the driven wheel 8 are in clearance fit, in the process that the push rod 7 slides towards the box body, the driven wheel 8 is still, however, when the driving wheel 504 drives the push rod 7 to slide to mesh with the driving teeth of the push rod 7 far away from the box body, the push rod 7 stops sliding, at this time, the first abutting surface P1 of the delay gear 9 contacts with the third abutting surface R1 of the driven wheel 8, thereby time delay gear 9 drives from driving wheel 8 and also along anticlockwise rotation, and anticlockwise rotation is from driving wheel 8 effect moment of torsion on meshing tooth 401 to drive the door body and continue to rotate around the articulated shaft, realize opening of the door body.
The process of closing the door 2 will be described in detail with reference to fig. 20 b: the output shaft of the driving motor 501 rotates clockwise to drive the first bevel gear 505 to rotate clockwise, so as to drive the second bevel gear 506 to rotate counterclockwise, the second bevel gear 506 rotating counterclockwise drives the driving wheel 504 to rotate counterclockwise, so as to drive the push rod 7 to slide away from the box body, at the same time, the driving wheel 504 also drives the delay gear 9 to rotate clockwise, at this time, the first abutting surface P1 of the delay gear 9 is separated from the third abutting surface R1 of the driven wheel 8, because the driven wheel 8 and the second connecting shaft are in clearance fit, during the process that the push rod 7 slides away from the box body, the driven wheel 8 is stationary, but when the driving wheel 504 drives the push rod 7 to slide to mesh with the transmission teeth of the push rod 7 close to the box body, the push rod 7 stops sliding, at this time, the second abutting surface P2 of the delay gear 9 contacts with the fourth abutting surface R2 of the driven wheel 8, so that the delay gear 9 drives the driven wheel 8 to, the clockwise rotation driven wheel 8 acts on the torque on the meshing teeth 401 to drive the door body to rotate around the hinge shaft, and the door body is closed.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (12)
1. The utility model provides a refrigerator, includes that inside is formed with the box of storeroom and sets up the door body at the opening part of storeroom, the door body pass through the articulated shaft with the box is rotated and is connected, its characterized in that still includes the switch door gear, the switch door gear includes:
the door body is driven by the same driving mechanism, and the driving mechanism is used for driving the ejection mechanism to move so as to eject the door body and driving the rotating mechanism to move so as to drive the door body to rotate around the hinge shaft;
the delay mechanism is used for enabling the driving mechanism to drive the rotating mechanism to move later than the driving mechanism drives the ejection mechanism to move.
2. The refrigerator according to claim 1, wherein the driving mechanism comprises:
a drive motor;
the driving wheel is connected with an output shaft of the driving motor;
the ejection mechanism includes:
the push rod is arranged on the mounting seat in a sliding mode, the sliding direction of the push rod is parallel to the thickness direction of the door body, and the push rod is provided with transmission teeth which are arranged along the extending direction of the push rod and meshed with the driving wheel;
the rotating mechanism includes:
the driven wheel is meshed with the driving wheel;
the hinged shaft is provided with meshing teeth which are arranged along the circumferential direction of the hinged shaft and meshed with the driven wheel;
the time delay mechanism is used for enabling the driving wheel to drive the driven wheel to rotate later than the driving wheel drives the push rod to move.
3. The refrigerator as claimed in claim 2, wherein the delay mechanism comprises a delay gear, the rotation axis of the driven wheel is collinear with the rotation axis of the delay gear, the driven wheel is connected with the delay gear through a second connecting shaft, the delay gear is meshed with the driving wheel, and the driven wheel is in clearance fit with the second connecting shaft;
a first bump is formed on the surface, opposite to the driven wheel, of the delay gear, the first bump is provided with a first abutting surface and a second abutting surface which are opposite, a second bump is formed on the surface, opposite to the delay gear, of the driven wheel, and the second bump is provided with a third abutting surface and a fourth abutting surface which are opposite;
under the condition that the driving wheel drives the ejection mechanism to move and drives the delay gear to move along a first direction, the first lug moves towards the stationary second lug along the first direction, and under the condition that the first abutting surface abuts against the third abutting surface, the driving wheel drives the delay gear and the driven wheel to synchronously rotate along the first direction;
under the condition that the driving wheel drives the ejection mechanism to move and drives the delay gear to move along the second direction, the first lug moves towards the static second lug along the second direction, and under the condition that the second abutting surface abuts against the fourth abutting surface, the driving wheel drives the delay gear and the driven wheel to synchronously rotate along the second direction, wherein the first direction is opposite to the second direction.
4. The refrigerator as claimed in claim 3, wherein a surface of the delay gear opposite to the driven wheel is formed with an annular groove disposed along a circumference of the delay gear, the first protrusion is located in the annular groove, and the second protrusion is located in the annular groove after the driven wheel is fastened to the delay gear.
5. The refrigerator according to claim 2, wherein an extension portion is formed at a top of the door body to extend beyond a top of the cabinet, a mounting cavity is formed in the extension portion, the door opening and closing device is disposed in the mounting cavity, and the ejecting mechanism and the rotating mechanism are disposed adjacent to the hinge shaft.
6. The refrigerator according to claim 5, wherein an output shaft of the driving motor is parallel to a width direction of the door body, an axis of the driving wheel is parallel to a height direction of the door body, the driving wheel is connected with the output shaft of the driving motor through a steering mechanism, and the steering mechanism is used for converting rotation of the output shaft of the driving motor around the width direction of the door body into rotation of the driving wheel around the height direction of the door body.
7. The refrigerator according to claim 6, wherein the steering mechanism comprises:
a first bevel gear installed on an output shaft of the driving motor;
and the second bevel gear is meshed with the first bevel gear, the axis of the second bevel gear is perpendicular to the axis of the first bevel gear, and the driving wheel is connected with the second bevel gear through a second connecting shaft.
8. The refrigerator of claim 5, further comprising a first limit structure and a second limit structure disposed on the push rod;
under the condition that the driving wheel drives the push rod, the first limiting structure and the second limiting structure to move towards the direction close to the box body, the first limiting structure can be abutted against one side, close to the box body, of the mounting seat so as to prevent the end part, far away from the box body, of the push rod from sliding out of one side, close to the box body, of the mounting seat;
the action wheel drives the push rod under the condition that the first limit structure and the second limit structure face away from the direction of box removes, the second limit structure can with keeping away from of mount pad one side butt of box to prevent keeping away from of push rod the tip roll-off of box the keeping away from of mount pad one side of box.
9. The refrigerator of claim 8, wherein the first and second stoppers are made of an elastic material.
10. The refrigerator as claimed in claim 2, wherein a clutch is installed on an output shaft of the driving motor, the clutch prevents the driving pulley from driving the output shaft of the driving motor to rotate in case the driving motor and the clutch are powered off, and the driving motor drives the driving pulley to move through the clutch in case the driving motor and the clutch are powered on.
11. The refrigerator as claimed in claim 2, wherein a transmission is mounted on an output shaft of the driving motor, the transmission being for expanding a torque of the output shaft of the driving motor, an output end of the transmission being connected to the driving pulley.
12. The refrigerator according to claim 1, further comprising an angle detecting member for detecting an angle at which the door body rotates about the hinge shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910631600.0A CN112211522B (en) | 2019-07-12 | 2019-07-12 | A kind of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910631600.0A CN112211522B (en) | 2019-07-12 | 2019-07-12 | A kind of refrigerator |
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| Publication Number | Publication Date |
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| CN112211522A true CN112211522A (en) | 2021-01-12 |
| CN112211522B CN112211522B (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910631600.0A Active CN112211522B (en) | 2019-07-12 | 2019-07-12 | A kind of refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073917A (en) * | 2021-03-26 | 2021-07-06 | 湖北三环汽车电器有限公司 | Automatic open and close lid mechanism |
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| KR20090076555A (en) * | 2008-01-09 | 2009-07-13 | 엘지전자 주식회사 | Apparatus for automatically opening door of refrigerator |
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| CN112211522B (en) | 2022-01-11 |
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