CN109974367B - Multi-air-door device for refrigerator - Google Patents
Multi-air-door device for refrigerator Download PDFInfo
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- CN109974367B CN109974367B CN201910269832.6A CN201910269832A CN109974367B CN 109974367 B CN109974367 B CN 109974367B CN 201910269832 A CN201910269832 A CN 201910269832A CN 109974367 B CN109974367 B CN 109974367B
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- guide rail
- air door
- rocker arm
- air
- guide groove
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- 230000033001 locomotion Effects 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims description 29
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 description 9
- 206010044048 Tooth missing Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a multi-air door device for a refrigerator, in particular to a three-air door device. The multi-air door device comprises an air door shell (1), a power driving mechanism (2) and a movement direction conversion mechanism (3); a plurality of air inlets are formed in the air door shell (1), and an air door capable of being freely opened and closed is respectively arranged on each air inlet; the power driving mechanism (2) controls a plurality of corresponding air doors on a plurality of air openings of the air door shell (1) to be opened or closed independently through the movement direction conversion mechanism (3). The multi-air door device, in particular to a three-air door device, adopts a single power driving mechanism to control a plurality of air doors to be opened and closed independently, realizes air inlet combination in various states, has simple structure assembly, fewer parts and low cost, and has small volume of the whole air door device, thereby having low occupancy rate of the inner space of the refrigerator and being beneficial to miniaturization of the refrigerator.
Description
Technical Field
The invention relates to the technical field of refrigerator air doors, in particular to a multi-door device for a refrigerator.
Background
With the progress of technology, there are more and more demands on temperature control of different areas inside the refrigerator functionally, and thus, there are more and more demands on the combination of the opening and closing states of the damper.
However, most of the existing refrigerator using damper devices are single damper or double damper devices, and actual use of damper devices of three or more dampers on refrigerator products has not yet occurred. The air inlet combination provided by the single double-air door device has at most four states, and cannot meet market demands. If more air inlet state combinations are needed, for example, eight air inlet state combinations of three air doors are needed, two executors of a single air door and a double air door are needed, and two sets of controllers/wires/wiring channels are needed, the refrigerator is further complicated in internal structure and more troublesome to assemble, and the occupied space in the refrigerator is large, so that the requirements of miniaturization, low energy consumption, low cost and the like of the refrigerator are not facilitated.
Therefore, there is an increasing need for a multi-damper device that uses one motor to independently open and close three dampers or more, thereby forming eight or more air intake state combinations. However, the introduction of the conventional multi-door device for a refrigerator generally includes drawbacks such as complicated structure and high complexity of function implementation. For example, patent application publication No. CN108895750a discloses a multi-air-door device, however, the opening and closing process of the multi-air-door device in realizing more than three air doors needs to be realized through at least more than 15 gears, which not only has complex structure, troublesome assembly and high cost, but also increases the volume of the whole air-door device, thereby having high space occupancy rate in the refrigerator, being unfavorable for the miniaturization design of the refrigerator, and having low practicability.
Disclosure of Invention
The invention aims to overcome the defects or shortcomings of the prior art and provides a multi-air-door device for a refrigerator. The multi-air door device is especially a three-air door device, a plurality of air doors can be controlled to be opened and closed independently by adopting a single power driving mechanism, air inlet combination in various states is realized, the structure is simple to assemble, parts are few, the cost is low, the volume of the whole air door device is small, and therefore, the occupancy rate of the internal space of the refrigerator is low, and the refrigerator is miniaturized.
The aim of the invention is achieved by the following technical scheme.
The multi-air door device for the refrigerator is characterized by comprising an air door shell, a power driving mechanism and a movement direction conversion mechanism;
the air door shell is provided with a plurality of air openings, and each air opening is respectively provided with an air door capable of being freely opened and closed; the power driving mechanism controls a plurality of corresponding air doors on a plurality of air openings of the air door shell to be opened or closed respectively and independently through the movement direction conversion mechanism.
The multi-damper device for a refrigerator according to the preferred embodiment, the movement direction conversion mechanism includes a guide rail, and the movement direction conversion mechanism may convert a linear movement of the guide rail in a length direction into a rotational movement required for opening and closing the damper.
As a multi-damper device for a refrigerator of the preferred embodiment, the multi-damper device is preferably a three-damper device; three air inlets are formed in the air door shell, and each air inlet is respectively provided with an air door capable of being freely opened and closed, namely a first air door, a second air door and a third air door; the motion direction conversion mechanism is a double-guide-rail motion direction conversion mechanism; the power driving mechanism controls the first air door, the second air door and the third air door to be opened and closed respectively and independently through the double-guide-rail movement direction conversion mechanism.
As a more preferable embodiment, the double guide rail movement direction conversion mechanism includes a first moving guide rail and a second moving guide rail;
the first moving guide rail and the second moving guide rail comprise a guide rail panel; the two sides of the guide rail panel of the first movable guide rail are respectively provided with a first waveform guide groove and a second waveform guide groove; a third wavy guide groove is formed on one side surface of the guide rail panel of the second movable guide rail; the first waveform guide groove, the second waveform guide groove and the third waveform guide groove are waveform guide grooves with different waveforms;
the first air door, the second air door and the third air door are respectively connected with the first wave guide groove, the second wave guide groove and the third wave guide groove through rocker arm components to realize swing arm connection;
the first moving guide rail and the second moving guide rail are driven by the power driving mechanism to reciprocate; through the reciprocating movement of the first moving guide rail and the second moving guide rail, mutually different waveform tracks of the first waveform guide groove, the second waveform guide groove and the third waveform guide groove can form mutually independent rotary swing arms at the tail ends of the rocker arm assemblies corresponding to the waveform guide grooves, so that the first air door, the second air door and the third air door are driven to be respectively and independently opened and closed.
Preferably, the first wave guide groove, the second wave guide groove and the third wave guide groove are wave guide grooves with the same amplitude and different wavelengths.
As a further preferred embodiment of the multi-damper device for a refrigerator, the guide rail panel of the first moving rail and the guide rail panel of the second moving rail are slidably provided on the damper housing through a main bracket.
As a further preferred embodiment, the multi-door device for a refrigerator is characterized in that the guide rail panel is further provided with a rack; the output end of the power driving mechanism is in meshed transmission connection with the racks on the guide rail panel so as to drive the first moving guide rail and the second moving guide rail to reciprocate.
As a multi-air-door device for a refrigerator of a still further preferred embodiment, the rocker arm assembly includes a first rocker arm assembly, a second rocker arm assembly and a third rocker arm assembly, and the first air door, the second air door and the third air door are connected with the first wave guide slot, the second wave guide slot and the third wave guide slot through the first rocker arm assembly, the second rocker arm assembly and the third rocker arm assembly in sequence respectively;
the first rocker arm assembly, the second rocker arm assembly and the third rocker arm assembly all comprise a supporting rod and a rocker arm; one end of the supporting rod is arranged on the wave guide groove in a sliding connection mode, the other end of the supporting rod is connected with one end of the rocker arm in a rotating mode, and the other end of the rocker arm is fixedly connected with the air door through the transmission shaft.
As a further preferred embodiment of the multi-damper apparatus for a refrigerator, the transmission shaft is rotatably provided on the damper housing through a boss.
As a further preferred embodiment, the portion of the first wave guide groove on the guide rail panel of the first moving guide rail includes a straight groove having both ends parallel to the longitudinal direction and a chute having an inclination angle of the middle section with the longitudinal direction; the part of the second wave-shaped guide groove on the guide rail panel of the first movable guide rail is a complete sine wave shape which is regular along the length direction; the part of the third wave-shaped guide groove on the guide rail panel of the second movable guide rail comprises a straight groove with two ends parallel to the length direction and a chute with an inclination angle between the middle section and the length direction; the amplitudes of the first waveform guide groove, the second waveform guide groove and the third waveform guide groove are the same, the length of the part of the first waveform guide groove on the guide rail panel of the first moving guide rail and the length of the part of the second waveform guide groove on the guide rail panel of the first moving guide rail along the length direction are the same, and the length of the part of the third waveform guide groove on the guide rail panel of the second moving guide rail along the length direction is half of the length of the part of the first waveform guide groove on the guide rail panel of the first moving guide rail along the length direction;
the rocker arm assemblies respectively corresponding to the first air door, the second air door and the third air door are all positioned on the same plane;
the power driving mechanism drives the first moving guide rail and the second moving guide rail to carry out semi-synchronous reciprocating movement through the semi-synchronous transmission gear set.
As a multi-damper device for a refrigerator of a still further preferred embodiment, the semi-synchronous transmission gear set includes a driving gear and a driven gear;
the driving gear is provided with a bulge in the axial direction, the driven gear is provided with a transverse rib corresponding to the bulge of the driving gear in the axial direction, and the transverse rib can block the bulge in the rotation direction of the gear; the driven gear is coaxially and rotatably arranged on the driving gear, and synchronously rotates along with the driving gear only when the driving gear rotates to reach the contact of the protrusion and the transverse rib;
the gear part of the driving gear, which is used for being meshed with the first movable guide rail, is a half-tooth; the driving gear is also provided with a full-tooth gear part which is coaxially arranged with the half-tooth gear part, and the driving gear is in meshed connection with the output end of the power driving mechanism through the full-tooth gear part so as to drive the driving gear to perform forward rotation or reverse rotation;
the gear part of the driven gear, which is used for being meshed with the second movable guide rail, is a tooth missing part.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the multi-air door device, in particular to a three-air door device, adopts a single power driving mechanism to control a plurality of air doors to be opened and closed independently, realizes air inlet combination in various states, has simple structure assembly, less parts and low cost, and has small volume of the whole air door device, thereby having low occupancy rate of the inner space of the refrigerator, being beneficial to miniaturization of the refrigerator, having high practicability and having wide application prospect.
Drawings
Fig. 1 is a schematic view showing the overall structure of a three-damper device for a refrigerator according to the present invention in an embodiment;
fig. 2 is a schematic front view of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic top view of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating an internal structure of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the power drive mechanism and the dual rail motion direction conversion mechanism portion of the three door apparatus for the refrigerator of FIG. 4;
FIG. 6 is a schematic diagram of an assembled structure of rocker arm assemblies and guide rails in a dual guide rail motion direction conversion mechanism of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
fig. 7 is a schematic front view of a first rail in a dual rail motion direction conversion mechanism of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
FIG. 8 is a schematic view of the back structure of the first rail in the dual rail motion direction conversion mechanism of the three-door apparatus for a refrigerator of the present invention in an embodiment;
FIG. 9 is a schematic diagram of a front structure of a second rail in a dual rail motion direction conversion mechanism of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of an assembled structure of a guide rail and a semi-synchronous drive gear set in a dual guide rail motion direction conversion mechanism of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a driving gear of a semi-synchronous drive gear set in a dual rail motion direction conversion mechanism of a three-door apparatus for a refrigerator according to an embodiment of the present invention;
FIG. 12 is a schematic view of the structure of the driven gear of the semi-synchronous drive gear set in the dual rail motion direction conversion mechanism of the three-door apparatus for a refrigerator of the present invention in an embodiment;
fig. 13 is a schematic view illustrating an operation principle of the three-door apparatus for a refrigerator according to the present invention in an embodiment;
the drawings are marked: 1-damper housing, 101-first damper, 102-second damper, 103-third damper, 2-power drive mechanism, 3-direction of motion conversion mechanism, 31-first moving rail, 32-second moving rail, 300-rail panel, 301-first wave guide slot, 302-second wave guide slot, 303-third wave guide slot, 304-rack, 33-rocker arm assembly, 331-first rocker arm assembly, 332-second rocker arm assembly, 333-third rocker arm assembly, 3301-strut, 3302-rocker arm, 34-main bracket, 35-drive shaft, 36-semi-synchronous drive gear set, 361-drive gear, 3610-bump, 3611-half-tooth gear portion, 3612-full tooth gear portion, 3613-gear groove, 362-driven gear, 3620-cross bar, 3621-tooth missing gear portion, 3622-gear extension, 400-power transmission housing, 401-top cover, 402-bottom shell.
Detailed Description
The technical scheme of the present invention is described in further detail below with reference to specific examples and drawings, but the scope and embodiments of the present invention are not limited thereto. In the description of the embodiments of the present invention, it should be noted that, the terms "upper," "lower," "left," "right," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that the inventive product is conventionally put in use, or are merely used to distinguish between the descriptions, merely to facilitate describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention, nor should it be construed as indicating or implying relative importance.
In a specific implementation application, a multi-damper apparatus for a refrigerator of the present embodiment includes a damper housing 1, a power driving mechanism 2, and a movement direction conversion mechanism 3. A plurality of air inlets are formed in the air door shell 1, and an air door capable of being freely opened and closed is respectively arranged on each air inlet; the power driving mechanism 2 controls a plurality of corresponding air doors on a plurality of air openings of the air door shell 1 to be respectively and independently opened or closed through the movement direction conversion mechanism 3. In a specific embodiment, the power drive mechanism 2 is selected from the group consisting of a motor or a servo motor.
Wherein in a preferred embodiment the movement direction conversion means 3 comprises a guide rail. The movement direction conversion mechanism 3 converts the linear movement of the guide rail in the longitudinal direction into the rotational movement required for opening and closing the damper. The motion direction conversion mechanism 3 is used for simplifying the structure assembly of the integral air door device, reducing the parts and the cost, and reducing the volume of the integral air door device, thereby reducing the occupancy rate of the internal space of the refrigerator and being beneficial to the miniaturization of the refrigerator.
Example 1
Referring to fig. 1 to 5, a multi-damper device for a refrigerator according to the present embodiment is a three-damper device. Three air openings are formed in the air door shell 1, and an air door capable of being freely opened and closed, namely a first air door 101, a second air door 102 and a third air door 103 are respectively arranged on each air opening. In this embodiment, the sides of the first damper 101, the second damper 102, and the third damper 103 on the upper side are rotatably provided on the damper housing 1, so that the first damper 101, the second damper 102, and the third damper 103 can be opened and closed freely. The motion direction conversion mechanism 3 is a double-guide-rail motion direction conversion mechanism; the power driving mechanism 2 controls the first air door 101, the second air door 102 and the third air door 103 to be opened and closed respectively and independently through a double-guide-rail movement direction conversion mechanism. The power drive mechanism 2 of the present embodiment is selected as a motor.
Specifically, the three-air door device in this embodiment is a combined three-air door of a single air door and a double air door, and the single air door and the double air door are in the same plane. The power driving mechanism 2 and the double-guide-rail movement direction conversion mechanism 3 are arranged between the single air door and the double air door, and the power driving mechanism 2 and the double-guide-rail movement direction conversion mechanism 3 are accommodated in a power transmission shell 400 fixedly connected with the single air door and the double air door. The power transmission housing 400 includes a bottom case 402 and a top cover 401, the bottom case 402 has a receiving chamber extending from the bottom toward the top for receiving the power driving mechanism 2 and the double-rail movement direction conversion mechanism 3, and the top cover 401 is hermetically disposed on the top of the bottom case 402 by screw fitting. Also, wherein the third damper 103 is provided on the single damper housing, the first damper 101 and the second damper 102 are provided on the double damper, and the first damper 101 is located on the side close to the single damper.
In this embodiment, referring to fig. 4 and 5, the dual rail movement direction conversion mechanism includes a first moving rail 31 and a second moving rail 32. Wherein, the first moving rail 31 and the second moving rail 32 each comprise a rail panel 300; the two sides of the guide rail panel 300 of the first moving guide rail 31 are respectively provided with a first wave guide groove 301 and a second wave guide groove 302; a third wavy guide groove 303 is formed on one side surface of the guide panel 300 of the second moving guide 32; the first wavy guide groove 301, the second wavy guide groove 302 and the third wavy guide groove 303 are specifically wavy guide grooves having the same amplitude and different wavelengths.
And the first air door 101, the second air door 102 and the third air door 103 are respectively connected with the first wave guide groove 301, the second wave guide groove 302 and the third wave guide groove 303 through the rocker arm assembly 33 in a swinging arm mode.
The arrangement of the double-moving guide rail and rocker arm assembly 33 movement direction conversion mechanism is used for providing the rotation movement required by opening and closing of the air door, so that the integral air door device is simple in structural assembly, few in parts, low in cost and small in size, and the occupancy rate of the inner space of the refrigerator is low, and the refrigerator is miniaturized.
The first moving guide rail 31 and the second moving guide rail 32 are driven by the power driving mechanism 2 to reciprocate; by the reciprocating movement of the first moving guide rail 31 and the second moving guide rail 32, mutually different wave tracks of the first wave guide groove 301, the second wave guide groove 302 and the third wave guide groove 303 can form mutually independent rotating swing arms at the tail end of the rocker arm assembly 33 corresponding to each wave guide groove, so that the first air door 101, the second air door 102 and the third air door 103 are driven to be respectively and independently opened and closed.
In this embodiment, the guide rail panel 300 of the first moving rail 31 and the guide rail panel 300 of the second moving rail 32 are slidably disposed on the damper housing 1 through the main bracket 34. Wherein the main support 34 is fixedly disposed between the housings of the single damper and the double damper by being engaged and positioned in the power transmission housing 400, and the main support 34 has rails on which the rail panel 300 of the first moving rail 31 and the rail panel 300 of the second moving rail 32 slide, and the rail panel 300 of the first moving rail 31 and the rail panel 300 of the second moving rail 32 have sliding pins engaged with the rails of the main support 34, so that the first moving rail 31 and the second moving rail 32 can move in a predetermined linear direction.
Furthermore, the guide rail panel 300 is further provided with a rack 304; the output end of the power driving mechanism 2 is in meshed transmission connection with a rack 304 on the guide rail panel 300, so as to drive the first moving guide rail 31 and the second moving guide rail 32 to reciprocate.
In this embodiment, the rocker arm assembly 33 includes a first rocker arm assembly 331, a second rocker arm assembly 332 and a third rocker arm assembly 333, and the first air door 101, the second air door 102 and the third air door 103 are connected with the first wave guide slot 301, the second wave guide slot 302 and the third wave guide slot 303 in a swing arm manner through the first rocker arm assembly 331, the second rocker arm assembly 332 and the third rocker arm assembly 333, respectively.
Referring to fig. 6, the first rocker arm assembly 331, the second rocker arm assembly 332, and the third rocker arm assembly 333 each comprise a strut 3301 and a rocker arm 3302; one end of the supporting rod 3301 is slidably connected to the wave-shaped guide groove, the other end of the supporting rod is rotatably connected with one end of the rocker arm 3302, and the other end of the rocker arm 3302 is fixedly connected with the air door through a transmission shaft 35.
The transmission shaft 35 is rotatably arranged on the air door shell 1 through a shaft sleeve, and the transmission shaft 35 is fixedly connected with the side edge of the air door, which is positioned above, so that the air door can be freely turned over to be opened and closed. In this embodiment, the drive shaft 35 for connecting the third damper 103 and the third rocker arm assembly 333 is provided on the single damper housing by a bushing; and the transmission shaft 35 for connecting the first air door 101 and the first rocker arm assembly 331 and the transmission shaft 35 for connecting the second air door 102 and the second rocker arm assembly 332 are arranged on the double air door shell, the transmission shaft 35 for connecting the first air door 101 and the first rocker arm assembly 331 is arranged on the double air door shell, and the transmission shaft 35 for connecting the second air door 102 and the second rocker arm assembly 332 is arranged by penetrating the transmission shaft 35 for connecting the first air door 101 and the first rocker arm assembly 331.
In operation, the rail moves in a linear direction along its own length, and the strut 3301 connects one end disposed on the wave guide groove with the linear movement of the rail to perform a sliding movement on the track of the rail. In addition, the track of the wavy guide groove is wavy along the length direction, so that the sliding motion of the support rod 3301 on the wavy guide groove presents a wavy sliding track, and one end of the support rod 3301, which is connected with the rocker arm 3302, presents a motion track swinging up and down. Because the rocker arm 3302 is rotatably connected to the support rod 3301 at one end, the other end of the rocker arm 3302 is fixedly connected with the transmission shaft 35, the rocker arm 3302 presents rotary motion rotating around the fixed shaft under the up-and-down swing guide of the support rod 3301, so that the linear motion of the guide rail is converted into rotary motion of the rocker arm 3302 and the transmission shaft 35, the conversion of the motion direction is realized, and rotary motion required by the turning of the air door is provided to enable the air door to be turned over for opening and closing.
Further, as shown in fig. 7, the portion of the first wavy guide 301 on the guide panel 300 of the first moving guide 31 includes a straight groove with two ends parallel to the longitudinal direction and a chute with an intermediate section inclined at 135 ° to the longitudinal direction. Referring to fig. 8, the portion of the second wave guide 302 on the guide panel 300 of the first moving guide 31 has a regular sine wave shape along the length direction. Referring to fig. 9, the portion of the third wave guide 303 on the guide panel 300 of the second moving guide 32 includes a straight groove with two ends parallel to the longitudinal direction and a chute with an intermediate section inclined at 45 ° to the longitudinal direction.
The amplitudes of the first wavy guide 301, the second wavy guide 302 and the third wavy guide 303 are the same, and the length of the portion of the first wavy guide 301 on the guide panel 300 of the first moving guide 31 and the length of the portion of the second wavy guide 302 on the guide panel 300 of the first moving guide 31 are the same along the length direction; and the length of the portion of the third wavy guide 303 on the guide panel 300 of the second moving guide 32 is half of the length of the portion of the first wavy guide 301 on the guide panel 300 of the first moving guide 31, so that the length of the guide panel 300 of the second moving guide 32 is also half of the length of the guide panel 300 of the first moving guide 31. In this embodiment, the first wavy guide slot 301 is opposite to the third wavy guide slot 303.
Also, of course, the positions of the first wave guide groove 301 and the second wave guide groove 302 may be interchanged.
The rocker arm assemblies 33 corresponding to the first air door 101, the second air door 102 and the third air door 103 are all located on the same plane.
Referring to fig. 10, the power driving mechanism 2 drives the first moving rail 31 and the second moving rail 32 to perform semi-synchronous reciprocating movement through a semi-synchronous transmission gear set 36.
Specifically, the semi-synchronous drive gear set 36 includes a driving gear 361 and a driven gear 362, with the driving gear 361 and the driven gear 362 having a semi-synchronous drive connection.
Referring to fig. 11, the center portion of the driving gear 361 is hollow; referring to fig. 12, a central shaft of a gear connecting portion of the driven gear 362 extends upward to form a gear extending portion 3622, a central portion of the gear extending portion 3622 is hollow and can be provided with a fixed shaft, the gear extending portion 3622 is mutually matched with a central hollow portion of the driving gear 361, and the driven gear 362 is coaxially and rotatably mounted on the driving gear 361 and can rotate on the driving gear 361 through the mutual matching of the gear extending portion 3622 and the central hollow portion of the driving gear 361. Further, as shown in fig. 11, a gear groove 3613 is provided in the periphery of the central hollow portion in the axial direction of the gear connecting portion of the drive gear 361; the gear connection edge of the driven gear 362 has an axial micro-convex structure adapted to the gear recess 3613, and when the driven gear 362 is rotatably mounted on the driving gear 361 through the gear extension 3622, the gear connection edge of the driven gear 362 is also rotatably mounted on the recess 3613 of the driving gear 361.
More specifically, the driving gear 361 has a protrusion 3610 along an axial direction of the driving gear 361, which is located between a periphery of a central hollow portion of the driving gear 361 and the gear recess 3613. Referring to fig. 12, the driven gear 362 has a transverse rib 3620 corresponding to the protrusion 3610 of the driving gear 361 in the axial direction, the transverse rib 3620 is located between the periphery of the gear extension 3622 and the gear connection edge of the driven gear 362, and the transverse rib 3620 can block the protrusion 3610 in the rotation direction of the gear. In this way, in the preliminary rotation process when the driving gear 361 works, the driven gear 362 does not rotate with the driving gear 361 at this time because the driven gear 362 and the driving gear 361 do not have a clamping relationship; and only when the rotation of the driving gear 361 reaches the contact of the protrusion 3610 and the transverse rib 3620, the driven gear 362 synchronously rotates along with the driving gear 361, so that the local synchronous transmission connection of the driving gear 361 and the driven gear 362 is realized, the local synchronous reciprocating motion of the double guide rails is further realized, and the requirement is provided for the realization of two swing arm motions needing the operation of local synchronous motion.
Further, referring again to fig. 11, in the present embodiment, the gear portion of the driving gear 361 for engaging with the first moving rail 31 is a half-tooth gear portion 3611 located on a side close to the driven gear 362. The driving gear 361 further has a full-tooth gear portion 3622 coaxially provided with the half-tooth gear portion 3611, that is, the driving gear 361 includes two gear portions of the half-tooth gear portion 3611 and the full-tooth gear portion 3612, and the full-tooth gear portion 3612 is located on a side away from the driven gear 362; the driving gear 361 is engaged with the power mechanism through the full gear portion 3612 to drive the driving gear 361 to rotate forward or backward.
Referring again to fig. 12, in this embodiment, the gear portion of the driven gear 362 includes a gear portion 3621 with a missing tooth, and the gear portion 3621 is configured to be engaged with the second moving rail 32.
The flow chart of the working principle of the three-air door device for the refrigerator in this embodiment is shown in fig. 13. First, as shown in fig. 13, in the original operating state i, one end of the strut of the third rocker arm assembly 333 is located on the left Bian Ping straight channel of the third wavy guide slot 303, while one end of the strut of the second rocker arm assembly 332 is located on the rightmost peak of the second wavy guide slot 302, and one end of the strut of the first rocker arm assembly 331 is located on the rightmost straight channel of the right straight channel of the first wavy guide slot 301, and at this time, the first damper 101, the second damper 102 and the third damper 103 are all in the closed state. Then, the power driving mechanism 2 starts to drive the first moving guide rail 31 and the second moving guide rail 32 to start to perform linear motion through the semi-synchronous transmission gear set 36, and because of the semi-synchronous connection relationship between the driving gear 361 and the driven gear 362, before the power driving mechanism 2 drives the driving gear 361 to rotate and the protrusion 3610 is not contacted with the transverse rib 3620, the semi-tooth-missing gear part 3611 of the driving gear 361 drives the first moving guide rail 31 to move rightward; in the working state ii, one end of the strut of the second rocker arm assembly 332 reaches the rightmost trough of the second wavy guide slot 302, while one end of the strut of the first rocker arm assembly 331 reaches the leftmost side of the right straight guide slot of the first wavy guide slot 301, at which time the first damper 101 is opened while the second damper 102 is still closed; in the working state iii, one end of the strut of the second rocker arm assembly 332 reaches the leftmost peak of the second wavy guide slot 302, and one end of the strut of the first rocker arm assembly 331 reaches the bottommost portion of the inclined guide slot of the first wavy guide slot 301, at this time, the first damper 101 is closed, and the second damper 102 is opened; in the working state iv, one end of the strut of the second rocker arm assembly 332 reaches the leftmost trough of the second wavy guide slot 302, and one end of the strut of the first rocker arm assembly 331 reaches the leftmost side of the left straight guide slot of the first wavy guide slot 301, at this time, the first damper 101 is opened, and the second damper 102 is also opened; in the operating states ii to iv, the second moving rail 32 is not moved, and the third damper 103 is always closed. After that, the power driving mechanism 2 continues to drive the driving gear 361 to rotate until the protrusion 3610 contacts the transverse rib 3620, the driven gear 362 starts to synchronously rotate along with the driving gear 361, and the second moving rail 32 and the first moving rail 31 synchronously move; in the working state v, the second moving rail 32 moves and makes one end of the strut of the third rocker arm assembly 333 reach the right straight guide groove of the third wavy guide groove 303, and the half-tooth-missing gear portion 3611 of the driving gear 361 no longer drives the first moving rail 31 to move, so that the first air door 101, the second air door 102 and the third air door 103 are all in an open state. Then, the power driving mechanism 2 is reversed and drives the driving gear 361 to be reversed, the protrusion 3610 is separated from the transverse rib 3620 and is not contacted, at this time, the first moving guide rail 31 is reversely moved leftwards, and the second moving guide rail 32 is not moved; in the working state vi, one end of the strut of the second rocker arm assembly 332 returns to reach the leftmost peak of the second wavy guide slot 302, while one end of the strut of the first rocker arm assembly 331 returns to reach the bottommost portion of the inclined guide slot of the first wavy guide slot 301, the first damper 101 is closed, and the second damper 102 is opened; in the working state vii, one end of the strut of the second rocker arm assembly 332 returns to reach the rightmost trough of the second wave guide slot 302, while one end of the strut of the first rocker arm assembly 331 returns to reach the leftmost side of the right straight guide slot of the first wave guide slot 301, at which time the first damper 101 is opened and the second damper 102 is closed; in the working state viii, one end of the strut of the second rocker arm assembly 332 returns to the initial state of the rightmost peak of the second wavy guide slot 302, one end of the strut of the first rocker arm assembly 331 returns to the initial state of the rightmost straight guide slot of the right straight guide slot of the first wavy guide slot 301, and both the first damper 101 and the second damper 102 are closed; in the working states vi to viii, the third damper 103 is still kept in the open state because the second moving rail 32 is not moved.
Based on the above-described working conditions of the working flows i to viii, the opening and closing combined states of the first damper 101, the second damper 102, and the third damper 103 are shown in table 1.
Table 1 the opening and closing combined state of the first damper 101, the second damper 102, and the third damper 103
Wherein 0FF represents off and ON represents ON.
As can be seen from table 1, the multi-air door device for a refrigerator of the present embodiment adopts a single power driving mechanism to control the three air doors to be opened and closed independently, and can realize eight air inlet combinations; the multi-air door device is simple in structure assembly, few in parts, low in cost and small in size, and accordingly the occupancy rate of the inner space of the refrigerator is low, miniaturization of the refrigerator is facilitated, practicability is high, and the multi-air door device has a wide application prospect.
In addition, in the multi-damper device with more than three dampers of the present invention, as a preferred embodiment, a wave guide groove may be added to the first moving rail 31 or the second moving rail 32, and a corresponding rocker arm assembly 33 may be added thereto, or a moving rail with a wave guide groove may be added thereto, and a rocker arm assembly 33 may be added thereto, thereby forming the damper device with more than three dampers.
The above embodiments are merely preferred embodiments of the present invention and only the technical solutions of the present invention will be described in further detail, but the scope and embodiments of the present invention are not limited thereto, and any changes, combinations, deletions, substitutions or modifications made without departing from the spirit and principles of the present invention are included in the scope of the present invention.
Claims (7)
1. The multi-air door device for the refrigerator is characterized by comprising an air door shell (1), a power driving mechanism (2) and a movement direction conversion mechanism (3);
a plurality of air inlets are formed in the air door shell (1), and an air door capable of being freely opened and closed is respectively arranged on each air inlet; the power driving mechanism (2) controls a plurality of corresponding air doors on a plurality of air openings of the air door shell (1) to be opened or closed independently through the movement direction conversion mechanism (3);
the motion direction conversion mechanism (3) is a double-guide-rail motion direction conversion mechanism; the power driving mechanism (2) controls the plurality of air doors to be opened and closed respectively and independently through a double-guide-rail movement direction conversion mechanism;
the double-guide-rail movement direction conversion mechanism comprises a first moving guide rail (31) and a second moving guide rail (32); the first moving guide rail (31) and the second moving guide rail (32) both comprise a guide rail panel (300); a first wavy guide groove (301) is formed on one side surface of a guide rail panel (300) of the first movable guide rail (31); a third wavy guide groove (303) is formed on one side surface of the guide rail panel (300) of the second movable guide rail (32); the first waveform guide groove (301) and the third waveform guide groove (303) are waveform guide grooves with the same amplitude and different wavelengths;
the air doors are respectively connected with the first wave guide groove (301) and the third wave guide groove (303) through rocker arm assemblies (33) in a swinging mode; the movement direction conversion mechanism (3) can convert the linear movement of the first moving guide rail (31) and the second moving guide rail (32) along the length direction into the rotation movement required by opening and closing the air door.
2. The multi-air door device for the refrigerator according to claim 1, wherein three air openings are formed in the air door shell (1), and each air opening is respectively provided with an air door capable of being freely opened and closed, namely a first air door (101), a second air door (102) and a third air door (103); the power driving mechanism (2) controls the first air door (101), the second air door (102) and the third air door (103) to be opened and closed respectively and independently through the double-guide-rail movement direction conversion mechanism.
3. A multi-door apparatus for a refrigerator according to claim 2, wherein the other side surface of the rail panel (300) of the first moving rail (31) is further provided with a second wave guide groove (302);
the first moving guide rail (31) and the second moving guide rail (32) are driven by the power driving mechanism (2) in a transmission manner to perform reciprocating movement; through the reciprocating movement of the first moving guide rail (31) and the second moving guide rail (32), the double-guide-rail movement direction conversion mechanism can enable the waveform tracks of the first waveform guide groove (301), the second waveform guide groove (302) and the third waveform guide groove (303) which are different from each other to form mutually independent rotary swing arms at the tail ends of the rocker arm assemblies (33) corresponding to the waveform guide grooves, so that the first air door (101), the second air door (102) and the third air door (103) are driven to be respectively and independently opened and closed;
the guide rail panel (300) of the first movable guide rail (31) and the guide rail panel (300) of the second movable guide rail (32) are slidably arranged on the air door shell (1) through a main bracket (34);
a rack (304) is further arranged on the guide rail panel (300); the output end of the power driving mechanism (2) is in meshed transmission connection with a rack (304) on the guide rail panel (300) so as to drive the first moving guide rail (31) and the second moving guide rail (32) to reciprocate.
4. A multi-door apparatus for a refrigerator according to claim 3, wherein the rocker arm assembly (33) comprises a first rocker arm assembly (331), a second rocker arm assembly (332) and a third rocker arm assembly (333), and the first air door (101), the second air door (102) and the third air door (103) are connected with the first wave guide groove (301), the second wave guide groove (302) and the third wave guide groove (303) through the first rocker arm assembly (331), the second rocker arm assembly (332) and the third rocker arm assembly (333) in sequence; the first rocker arm assembly (331), the second rocker arm assembly (332) and the third rocker arm assembly (333) each comprise a strut (3301) and a rocker arm (3302); one end of the supporting rod (3301) is arranged on the wave-shaped guide groove in a sliding connection mode, the other end of the supporting rod is connected with one end of the rocker arm (3302) in a rotating mode, and the other end of the rocker arm (3302) is fixedly connected with the air door through the transmission shaft (35).
5. A multi-damper apparatus for a refrigerator according to claim 4, wherein the transmission shaft (35) is rotatably provided on the damper housing (1) through a boss.
6. The multi-door device for a refrigerator according to any one of claims 3 to 5, wherein the portion of the first wave guide groove (301) on the guide rail panel (300) of the first moving guide rail (31) includes a straight groove having both ends parallel to the longitudinal direction and a chute having an inclination angle between the middle section and the longitudinal direction; the part of the second wave guide groove (302) on the guide rail panel (300) of the first movable guide rail (31) is a complete sine wave shape which is regular along the length direction; the part of the third wave-shaped guide groove (303) on the guide rail panel (300) of the second movable guide rail (32) comprises a straight groove with two ends parallel to the length direction and a chute with an inclination angle between the middle section and the length direction; the amplitudes of the first waveform guide groove (301), the second waveform guide groove (302) and the third waveform guide groove (303) are all the same, the length of the part of the first waveform guide groove (301) on the guide rail panel (300) of the first moving guide rail (31) along the length direction is the same as the length of the part of the second waveform guide groove (302) on the guide rail panel (300) of the first moving guide rail (31) along the length direction, and the length of the part of the third waveform guide groove (303) on the guide rail panel (300) of the second moving guide rail (32) along the length direction is half of the length of the part of the first waveform guide groove (301) on the guide rail panel (300) of the first moving guide rail (31) along the length direction;
the rocker arm assemblies (33) corresponding to the first air door (101), the second air door (102) and the third air door (103) are all positioned on the same plane;
the power driving mechanism (2) drives the first moving guide rail (31) and the second moving guide rail (32) to perform semi-synchronous reciprocating movement through a semi-synchronous transmission gear set (36).
7. The multiple door apparatus for a refrigerator according to claim 6, wherein the semi-synchronous transmission gear set (36) includes a driving gear (361) and a driven gear (362);
a protrusion (3610) is arranged on the axial direction of the driving gear (361), a transverse rib (3620) corresponding to the protrusion (3610) of the driving gear (361) is arranged on the axial direction of the driven gear (362), and the transverse rib (3620) can block the protrusion (3610) in the rotation direction of the gear; the driven gear (362) is coaxially and rotatably arranged on the driving gear (361), and the driven gear (362) synchronously rotates along with the driving gear (361) only when the driving gear (361) rotates to reach the contact of the protrusion (3610) and the transverse rib (3620);
the gear part of the driving gear (361) for being meshed with the first movable guide rail (31) is a half-tooth; the driving gear (361) is also provided with a full-tooth gear part which is coaxially arranged with the half-tooth gear part, and the driving gear (361) is meshed and connected with the output end of the power driving mechanism (2) through the full-tooth gear part so as to drive the driving gear (361) to rotate positively or reversely;
the gear part of the driven gear (362) for engaging and connecting the second moving guide rail (32) is a missing tooth.
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| CN201910269832.6A CN109974367B (en) | 2019-04-04 | 2019-04-04 | Multi-air-door device for refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111271923A (en) * | 2020-02-26 | 2020-06-12 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN111156760B (en) * | 2020-02-28 | 2021-09-10 | 江苏雷利电机股份有限公司 | Air door device for refrigerator and refrigerator with same |
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