EP3091315A1 - Refrigerator - Google Patents
Refrigerator Download PDFInfo
- Publication number
- EP3091315A1 EP3091315A1 EP15876661.8A EP15876661A EP3091315A1 EP 3091315 A1 EP3091315 A1 EP 3091315A1 EP 15876661 A EP15876661 A EP 15876661A EP 3091315 A1 EP3091315 A1 EP 3091315A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- guide rail
- guide
- secondary door
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 102
- 238000007789 sealing Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 4
- 230000009189 diving Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 9
- 235000013305 food Nutrition 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 238000003860 storage Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/021—Sliding doors
-
- 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
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
-
- 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
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
-
- 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
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
- F25D2323/023—Door in door constructions
Definitions
- the present invention relates to the technical field of refrigerators, and in particular to a refrigerator.
- Fig. 1 is a refrigerator in the prior art, including a refrigerator door 01.
- a storage space (not shown) is provided on the refrigerator door 01.
- a secondary door 03 is provided outside of an opening 02 of the storage space.
- a revolving shaft 04 of the secondary door 03 is arranged horizontally on the bottom of the opening 02.
- the secondary door 03 is rotated about the revolving shaft 04 to open or enclose the opening 02. Because commonly used goods are arranged inside the storage space on the refrigerator door 01, it is just needed to open the secondary door 03 when users fetch them. This avoids opening and closing the large-sized refrigerator door 01 frequently, thereby reducing the leakage of the cooling capacity in the refrigerator and decreasing the energy consumption of the refrigerator.
- Embodiments of the present invention provide a refrigerator which may solves problems such as increased external space occupied by a refrigerator when its secondary door is opened, increased difficulty in fetching goods in the refrigerator, and heavy loss of cooling capacity resulted from the full opening of the opening.
- a refrigerator including a main door; an opening is formed on a door body of the main door; a guide rail is provided at an edge of the opening, and a secondary door is fitted on the guide rail; and the secondary door is connected with a driving mechanism which can drive the secondary door to slide along the guide rail, and as the secondary door slides along the guide rail, the secondary door can enclose or open the opening.
- the embodiments of the present invention provide a refrigerator.
- the secondary door is provided on the main door.
- the opening on the main door can be opened by driving the secondary door to slide along the guide rail by the driving mechanism, so that it is possible to fetch the goods in the refrigerator; and the opening on the main door can be enclosed by driving the secondary door by the driving mechanism to slide along the guide rail in the opposite direction.
- a small-sized secondary door can be opened partially or fully when users fetch the commonly used goods, so as to reduce the loss of cooling capacity, fetch and place goods conveniently, and improve the user experience.
- the secondary door when opened, is located in the main door and in a same plane as the main door, so that it will not block in front of the human body and will not exert an influence on the external space occupied by the refrigerator and the difficulty in fetching goods.
- orientation or location relationships indicated by terms “center”, “up”, “down”, “front”, “behind”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside” and the like are the orientation or location relationships based on the accompanying drawings, provided just for ease of describing the present invention and simplifying the description. They are not intended to indicate or imply that the stated devices or elements must have the specific orientation and be constructed and operated in the specific orientation. Hence, they shall not be understood as any limitation to the present invention.
- mount should be understood in a broad sense, for example, it can be fixed connection, and can also be detachable connection or integral connection; and, it can be direct connection, can also be connection by intermediate members, and can be internal connection between two elements.
- mount can be fixed connection, and can also be detachable connection or integral connection; and, it can be direct connection, can also be connection by intermediate members, and can be internal connection between two elements.
- Fig. 2 is one specific embodiment of the refrigerator according to the embodiments of the present invention.
- the refrigerator in this embodiment includes a main door 1; an opening 2 is formed on the door body of the main door 1; a guide rail 3 is provided at an edge of the opening 2, and a secondary door 4 is fitted on the guide rail 3; and the secondary door 4 is connected to a driving mechanism 5 which can drive the secondary door 4 to slide along the guide rail 3, and as the secondary door 4 slides along the guide rail 3, the secondary door 4 can enclose or open the opening 2.
- the secondary door 4 is provided on the main door 1, and the opening 2 on the main door 1 can be opened by driving the secondary door 4 to slide along the guide rail 3 by the driving mechanism 5 so that it is possible to fetch the goods in the refrigerator; and the opening 2 on the main door 1 can be enclosed by driving the secondary door 4 by the driving mechanism 5 to slide along the guide rail 3 in the opposite direction.
- the small-sized secondary door 4 can be opened partially or fully when users fetch the commonly used goods, so as to reduce the loss of cooling capacity in the refrigerator, fetch and place goods conveniently for users, and improve the user experience.
- the secondary door 4 when opened, is located in the main door 1 and in a same plane as the main door 1, so that it will not block in front of the human body and will not exert an influence on the external space occupied by the refrigerator and the difficulty in fetching goods.
- the door hinge parts which are easy to wear, are omitted, and the durability of the secondary door 4 is enhanced.
- the opening or enclosing of the secondary door 4 can be implemented by the driving mechanism 5, which is beneficial to the automation development of refrigerators.
- the arrangement of the guide rail 3 at an edge of the opening 2 can be implemented in the following two ways.
- the first implementation way is to arrange the guide rail 3 at an edge of only one side of the opening 2.
- the sliding of the secondary door 4 can be implemented by limiting the edge of the one side of the secondary door 4 by the guide rail 3 on the corresponding one side, and as a result, the sliding stability of the secondary door 4 is relatively low.
- the second implementation way is to arrange parallel guide rails 3 at two opposite edges of the opening 2, respectively.
- Such implementation in which edges of two sides of the secondary door 4 are limited by guide rails 3 on the two sides, makes the secondary door 4 slide more smoothly and stably. Therefore, it is preferable to arrange guide rails 3 at the two opposite edges of the opening 2, respectively.
- the driving mechanism 5 includes a motor 6 and a transmission assembly 7; an output shaft of the motor 6 is connected to the transmission assembly 7 in a transmission way, and the transmission assembly 7 is connected to the secondary door 4 in a transmission way; and the transmission assembly 7 can transform a rotary motion of the output shaft of the motor 6 to a linear motion to drive the secondary door 4 to slide along the guide rail 3. Power of the motor 6 is transmitted to the secondary door 4 by the transmission assembly 7, to drive the secondary door 4 to slide along the guide rail 3, so as to realize the opening and enclosing of the opening 2 on the main door 1.
- Fig. 2 is one implementation of the transmission assembly 7, including a first gear 71, a first connecting rod 72 and a second connecting rod 73; the first connecting rod 72 is connected to the door body of the main door 1 by a first shaft 75, and the first connecting rod 72 can rotate about the first shaft 75; the second connecting rod 73 is hinged with the first connecting rod 72 by a second shaft 76; the first gear 71 is fixed onto the output shaft of the motor 6; one end of the first connecting rod 72 is a gear structure 721, and the other end thereof is connected with a first guide pin 722; the gear structure 721 is engaged with the first gear 71; a first chute 41 perpendicular to the guide rail 3 is provided on one side of the secondary door 4 close to the driving mechanism 5, and the first guide pin 722 is fitted inside the first chute 41; one end of the second connecting rod 73 is connected with a second guide pin 731 and the other end thereof is connected with a third guide pin 732, and the second guide pin 731 is fitted inside the first chute 41; and a
- the motor 6 starts, and drives the first gear 71 to rotate about the motor shaft counterclockwise. Because the first gear 71 is engaged with the gear structure 721, the first gear 71 drives the first connecting rod 72 to rotate about the first shaft 75 clockwise, and drives the second shaft 76 to rotate about the first shaft 75 clockwise.
- the first guide pin 722 slides along the first chute 41 in a direction away from the first gear 71; the second connecting rod 73 rotates about the second shaft 76 counterclockwise, so that the second guide pin 731 slides along the first chute 41 in a direction opposite to the sliding direction of the first guide pin 722; and the third guide pin 732 slides along the second chute 74 in a direction the same as the sliding direction of the first guide pin 722, so as to drive the secondary door 4 to slide along the guide rail 3 in a direction close to the first gear 71 until the opening 2 is fully opened.
- the motor 6 starts, and drives the first gear 71 to rotate about the motor shaft clockwise.
- the first gear 71 drives the first connecting rod 72 to rotate about the first shaft 75 counterclockwise, and drives the second shaft 76 to rotate about the first shaft 75 counterclockwise.
- the first guide pin 722 slides along the first chute 41 in a direction close to the first gear 71;
- the second connecting rod 73 rotates about the second shaft 76 clockwise, so that the second guide pin 731 slides along the first chute 41 in a direction opposite to the sliding direction of the first guide pin 722;
- the third guide pin 732 slides along the second chute 74 in a direction the same as the sliding direction of the first guide pin 722, so as to drive the secondary door 4 to slide along the guide rail 3 in a direction away from the first gear 71 until the opening 2 is fully enclosed.
- Power of the motor 6 is transmitted to the first connecting rod 72 and the second connecting rod 73 by engaging the first gear 71 and the gear structure 721 on the first connecting rod 72, so that the first connecting rod 72 and the second connecting rod 73 drive the secondary door 4 to slide along the guide rail 3 smoothly and stably, so as to realize the opening and enclosing of the opening 2.
- the bearing capacity and impact resistance of the transmission assembly 7 are so high that there is a relatively small abrasion during the transmission. Furthermore, the manufacturing is convenient and it is easy to obtain a relatively high precision when producing a refrigerator.
- the second chute 74 is formed on the door body of the main door 1, strength at the corresponding position of the main door 1 will be reduced. If the second chute 74 is damaged, the main door 1 will be scraped entirely.
- a support rod (not shown) perpendicular to the guide rail 3 is preferably arranged on the door body of the main door 1, and the second chute 74 is formed on the support rod.
- the third guide pin 732 is fitted inside the second chute 74. Therefore, when the second chute 74 is damaged, it is just needed to replace the support rod. This prevents the main door 1 from entirely scraping and also guarantees the strength of the main door 1 not being impacted.
- the gear structure 721 is preferably a sector gear structure as shown in Fig. 2 .
- the transmission assembly 7 in one embodiment of the invention also includes a second gear 77, and the gear structure 721 is engaged with the first gear 71 by the second gear 77.
- the transmission assembly 7 can adopt a gear rack for transmission, including a transmission gear, a rack and a rack guide rail; the rack guide rail is fixed onto the door body of the main door 1, the gear guide rail is in parallel to the guide rail 3, and the rack can slide along the rack guide rail and one end of the rack is connected to the secondary door 4; and the transmission gear is connected with an output shaft of the motor 6 in a transmission way, and engaged with the rack.
- the motor 6 starts, and drives the transmission gear to rotate about the motor shaft counterclockwise.
- the rack engaged with the transmission gear slides along the rack guide rail so as to drive the secondary door 4 to slide along the guide rail 3 in a direction close to the transmission gear until the opening 2 is fully opened.
- the motor 6 starts, and drives the transmission gear to rotate about the motor shaft clockwise.
- the rack engaged with the transmission gear slides along the rack guide rail so as to drive the secondary door 4 to slide along the guide rail 3 in a direction away from the transmission gear until the opening 2 is fully closed.
- the rotary motion of the output shaft of the motor 6 is transformed to a linear motion by the gear rack.
- the secondary door 4 is driven to slide along the guide rail 3, so as to realize the opening and enclosing of the opening 2.
- Such transmission assembly 7 can ensure a constant transmission ratio, high transmission efficiency, and smooth and stable transmission, so that the secondary door 4 slides more smoothly and stably along the guide rail 3. In this way, the service life becomes longer.
- the motor 6 drives this transmission gear to rotate when it starts.
- the rotation of the transmission gear drives the rack engaged with the transmission gear to slide along the rack guide rail, so as to drive the secondary door 4 to slide along the guide rail and thus to realize the opening and closing of the opening 2.
- the transmission gear includes two gears, i.e., a third gear 78 and a fourth gear 79.
- the transmission gear includes two gears, i.e., a third gear 78 and a fourth gear 79.
- the two racks 710 are spaced apart from each other and in parallel to the guide rail 3, and one end of each of the two racks 710 is connected with the secondary door 4.
- the two rack guide rails 711 are spaced apart from each other and in parallel to the guide rail 3.
- the two racks 710 are fitted on the two rack guide rails 711, respectively.
- the third gear 78 is fixed on the output shaft of the motor 6, and is engaged with one rack 710 and the fourth gear 79, respectively.
- the fourth gear 79 is engaged with the other rack 710.
- the motor 6 starts, and drives the third gear 78 to rotate about the motor shaft clockwise.
- the fourth gear 79 engaged with the third gear 78 rotates its rotary center counterclockwise.
- the third gear 78 and the fourth gear 79 drive the secondary door 4 to slide along the guide rail 3 in a direction away from the third gear 78 until the opening 2 is fully closed, by driving two racks 710 engaged with them to slide along the rack guide rail 711.
- the secondary door 4 is driven from two sides. Compared with driving the secondary door 4 from one side, this implementation enables the secondary door 4 to be stressed more evenly, preventing the secondary door 4 from being jammed during the sliding. Therefore, it is preferred that there are two transmission gears, two racks and two rack guide rails.
- the transmission assembly 7 includes a guide block 701 which is arranged along a direction in parallel to the guide rail 3; at both ends of the guide block 701, a first guide wheel 703 and a second guide wheel 704 are provided, respectively; a driving wheel 705 is sleeved on the output shaft of the motor 6; the secondary door 4 includes a sliding bottom plate 702 which is sleeved on the guide block 701 and can slide along the guide block 701; the sliding bottom plate 702 is located between the first guide wheel 703 and the second guide wheel 704 and connected with a transmission rope 706; the transmission rope 706 includes a first transmission rope segment 7061 and a second transmission rope segment 7062 which are located on both sides of the sliding bottom plate 702, respectively; and the first transmission rope segment 7061 is passed over the first guide wheel 703 and wound onto the driving wheel 705 in a first direction, and the second transmission rope segment 7062 is passed beneath the second guide wheel 704 and
- the operating process of the above embodiment is as follows.
- the output shaft of the motor 6 drives the driving wheel 705 to rotate counterclockwise, so as to pull the first transmission rope segment 7061 and release the second transmission rope segment 7062, so that the transmission rope located between the first guide wheel 703 and the second wheel 704 moves upward because of being partially stressed and then, guided by the guide block 701 and the guide rail 3 in terms of direction, pulls the sliding bottom plate 702 in order to drive the secondary door 4 to move upward to reach the closed position.
- the output shaft of the motor 6 drives the driving wheel 705 to rotate clockwise, so as to pull the second transmission rope segment 7062 and release the first transmission rope segment 7061, so that the transmission rope located between the first guide wheel 703 and the second wheel 704 moves downward and then, guided by the guide block 701 and the guide rail 3 in terms of direction, pulls the sliding bottom plate 702 in order to drive the secondary door 4 to move downward drive to reach the opened state.
- a transmission structure shown in Fig. 5 compared with a common transmission structure, the number of components and parts assembled is reduced, and the production efficiency is increased.
- the transmission rope is continuously coordinated with the driving wheel and the guide wheels, and the transmission rope is a flexible member, compared with gear transmission, the friction and collision between the teeth generated when engaged with each other are avoided, and as a result, noise generated during the transmission is reduced.
- a portion of the transmission rope 706 located between the first guide wheel 703 and the second wheel 704 can be made in parallel to the guide rail 3 by arranging the positions and sizes of the first guide wheel 703 and the second guide wheel 704.
- the first guide wheel 703 and the second wheel 704 can be set to have an equal radius and their centers can be located in a same straight line. Therefore, the stressed direction of the secondary door is made consistent with the arrangement direction of the guide rail 3. This avoids jamming during the movement.
- a first guide groove 7051 and a second guide groove 7052 which are in parallel to each other, are preferably provided along an outer circumference of the driving wheel 705; and the first transmission rope segment 7061 is passed over the first guide wheel 703 and wounded into the first guide groove 7051 in a first direction, and is fixedly connected to the first guide groove 7051; and the second diving rope segment 7062 is passed beneath the second guide wheel 704 and wounded into the second guide groove 7052 in a direction opposite to the first direction, and is fixedly connected to the second guide groove 7052.
- the output shaft of the motor 6 drives the driving wheel 705 to rotate counterclockwise so as to: pull the first transmission rope segment 7061 so that the first transmission rope segment 7061 is gradually wound into the guide groove 7051; and to release the second transmission rope segment 7062 so that the second transmission rope segment 7062 is gradually separated from the second guide groove 7052, and as a result, transmission rope located between the first guide wheel 703 and the second guide wheel 704 moves upward because of being partially stressed, and then, guided by the guide block 701 and the guide rail 3 in terms of direction, pulls the sliding bottom plate 702 in order to drive the secondary door 4 to move upward to reach the closed position.
- the driving wheel 705 in a structure having two guide grooves can separate the first transmission rope segment 7061 and the second transmission rope segment 7062 wound onto the driving wheel 705 from each other, thereby preventing increasing the resistance of the movement of the secondary door due to the contact and friction between the first transmission rope segment 7061 and the second transmission rope segment 7062 during the transmission.
- a length of the transmission rope 706 wound onto the driving wheel 705 should be enough to allow for a stroke traveled by the secondary door between the fully enclosed position and the fully opened position. As such, the whole movement of the secondary door between the fully enclosed position and the fully opened position can be ensured. Specifically, when the secondary door is in the fully enclosed position (that is, the position shown in Fig. 5 ), the length of the transmission rope 706 wound into the first guide groove 7051 should be equal to or greater than the stroke.
- the transmission rope 706 can be a whole rope, and can also be separated into two segments.
- the middle portion of the transmission rope 706 penetrates through and is connected with the sliding bottom plate 702.
- the two transmission ropes are connected with an upper end and a lower end, of the sliding bottom plate 702, respectively.
- pulleys 7022 can be provided between the sliding bottom plate 702 and the guide block 701.
- rotary pulleys 7022 can be provided on an inner wall of the sliding bottom plate 702 in contact with the guide block 701, and then the sliding bottom plate 702 is sleeved onto the guide block 702. Therefore, the sliding between the sliding bottom plate 702 and the guide block 701 is supported by the pulleys 7022, so that the friction force when the sliding bottom plate 702 slides along the guide block 701 becomes a rolling fiction force which significantly reduces the movement resistance of the secondary door.
- the transmission rope 706 is preferably made of a steel rope which is more resistant to loss.
- a mounting groove 7021 on a surface of the sliding bottom plate 702 facing the secondary door. An edge of the secondary door is clamped into the mounting groove 7021. Therefore, it may prevent the secondary door and the sliding bottom plate 702 from being separated during the transmission.
- a thickness of a foam layer on the main door 1 at a corresponding position is reduced, and as a result, the thermal insulation performance of the main door 1 is decreased.
- a thickening layer 11 which is protruded from a surface of an inner wall is provided on the inner wall of the main door 1 at a position corresponding to the driving mechanism 5. By the arrangement of the thickening layer 11, the thermal insulation performance of the main door 1 may be enhanced.
- a vacuum insulation panel 8 is provided on an external surface of the driving mechanism 5.
- the thermal insulation performance of the main door 1 is enhanced.
- a sealing strip 9 is provided around an inner wall of the opening 2, a groove 91 is provided on one side of the sealing strip 9 facing the secondary door 4, and elastic projections 92 are provided inside the groove 91; and when the secondary door 4 is closed, an edge of the secondary door 4 can be extended into the groove 91 to press against the elastic projections 92. At this time, the elastic projections 92 are in close contact with the secondary door 4, which ensures the sealing performance of the opening 2 when the secondary door is closed.
- the sealing strip 9 is arranged on the inner wall of the opening 2 and a temperature on the inner wall of the opening 2 is relatively low, the sealing strip 9 is required to keep a good elasticity at low temperature, so as to ensure the sealing performance of the opening 2.
- the material of the sealing strip 9 is preferably EPDM (Ethylene-Propylene-Diene Monomer), TPE (Thermoplastic Elastomer) or TPR (Thermoplastic Rubber). The three materials mentioned above have a good elasticity at low temperature, so that the sealing performance of the opening 2 is ensured.
- the secondary door 4 is made of heat insulating glass.
- the heat insulating glass may prevent cooling capacity inside the refrigerator from leaking, so that the thermal insulation performance of the refrigerator is enhanced.
- users may also check the storage condition of goods from the secondary door 4, when the main door 1 and the secondary door 4 are both closed. It is helpful to fetch goods.
- the guide rail 3 in this embodiment can be arranged in a vertical direction, and in this case, the secondary door 4 can slide up and down along the guide rail 3.
- the guide rail 3 can also be arranged in a horizontal direction, and in this case, the secondary door 4 can slide left and right along the guide rail 3. If a storage rack is horizontally arranged inside the main door 1, when the guide rail 3 is arranged in a horizontal direction, users may fetch only goods on half of the storage rack even if the secondary door 4 is fully opened; and when the guide rail 3 is arranged in a vertical direction, users may fetch goods on the whole storage rack even if the secondary door 4 is partially opened. For example, users only need to open the upper part of the secondary door 4 to fetch goods on the upper layer of the storage rack, and this thus reduces the loss of cooling capacity. Therefore, it is preferable to arrange the guide rail 3 in a vertical direction.
- a rotary guide wheel 31 is provided on inner walls of two sides of the guide rail 3, when the secondary door 4 slides along the guide rail 3, the surfaces of the two sides of the secondary door 4 are fitted to the guide wheel 31, respectively.
- the position of the secondary door 4 is limited by the guide wheel 31, thereby preventing the secondary door 4 from swinging toward the two sides during the sliding and allowing the secondary door 4 to slide more smoothly and stably along the guide rail 3.
- the material of the guide wheel 31 is preferably rubber or nylon, and this may prevent the guide wheel 31 from scratching the glass secondary door 4 to influence the appearance.
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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)
Abstract
Description
- The application claims both the priority of Chinese Patent Application No.
201510009262.9 201510107398.3 - The present invention relates to the technical field of refrigerators, and in particular to a refrigerator.
- With the improvement of people's life quality, a gradually increasing storage requirement for a refrigerator makes refrigerator products with a large capacity become popular. However, an enlarged capacity will lead to a correspondingly increased size of the refrigerator, and the door body of the refrigerator will also become taller and wider. Because users will frequently open the large-sized door body when they fetch goods, cooling capacity in the refrigerator will leak heavily which causes a compressor to frequently start and thus leads to increased energy consumption of the refrigerator. In addition, due to the deeper depth of the refrigerator, it will be more difficult for users to fetch goods if the goods are not placed in good classification, when a large number of goods are stored in the refrigerator.
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Fig. 1 is a refrigerator in the prior art, including arefrigerator door 01. A storage space (not shown) is provided on therefrigerator door 01. Asecondary door 03 is provided outside of anopening 02 of the storage space. A revolvingshaft 04 of thesecondary door 03 is arranged horizontally on the bottom of the opening 02. Thesecondary door 03 is rotated about the revolvingshaft 04 to open or enclose theopening 02. Because commonly used goods are arranged inside the storage space on therefrigerator door 01, it is just needed to open thesecondary door 03 when users fetch them. This avoids opening and closing the large-sizedrefrigerator door 01 frequently, thereby reducing the leakage of the cooling capacity in the refrigerator and decreasing the energy consumption of the refrigerator. - When the
secondary door 03 is opened, an angle between thesecondary door 03 and therefrigerator door 01 will become larger as thesecondary door 03 rotates about the revolvingshaft 04, leading to increased space occupied by the refrigerator. Thesecondary door 03 will occupy a certain external space when it is fully opened, causing unnecessary limitations. And, thesecondary door 03 sometimes blocks in front of the human body and thus increases the difficulty in fetching goods. In addition, opening the door each time will cause the full opening of the opening 02 on therefrigerator door 01. As a result, loss of cooling capacity remains heavy. - Embodiments of the present invention provide a refrigerator which may solves problems such as increased external space occupied by a refrigerator when its secondary door is opened, increased difficulty in fetching goods in the refrigerator, and heavy loss of cooling capacity resulted from the full opening of the opening.
- In order to achieve this objective, the embodiments of the present invention adopt the following technical solution.
- A refrigerator is provided, including a main door; an opening is formed on a door body of the main door; a guide rail is provided at an edge of the opening, and a secondary door is fitted on the guide rail; and the secondary door is connected with a driving mechanism which can drive the secondary door to slide along the guide rail, and as the secondary door slides along the guide rail, the secondary door can enclose or open the opening.
- The embodiments of the present invention provide a refrigerator. The secondary door is provided on the main door. When users fetch goods, the opening on the main door can be opened by driving the secondary door to slide along the guide rail by the driving mechanism, so that it is possible to fetch the goods in the refrigerator; and the opening on the main door can be enclosed by driving the secondary door by the driving mechanism to slide along the guide rail in the opposite direction. With regard to the refrigerator provided by the embodiments of the present invention, a small-sized secondary door can be opened partially or fully when users fetch the commonly used goods, so as to reduce the loss of cooling capacity, fetch and place goods conveniently, and improve the user experience. Furthermore, the secondary door, when opened, is located in the main door and in a same plane as the main door, so that it will not block in front of the human body and will not exert an influence on the external space occupied by the refrigerator and the difficulty in fetching goods.
- In order to describe technical solutions in the embodiments of the present invention or in the prior art more clearly, the accompanying drawings to be used for describing the embodiments or the prior art will be introduced briefly. Obviously, the accompanying drawings to be described below are merely some embodiments of the present invention, and a person of ordinary skill in the art can obtain other drawings according to those drawings without paying any creative effort.
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Fig. 1 is a side view of a refrigerator door in the prior art; -
Fig. 2 is a schematic structure diagram of a main door according to one embodiment of the present invention; -
Fig. 3 is a schematic structure diagram of a second gear provided in a transmission assembly according to one embodiment of the present invention; -
Fig. 4 is a schematic structure diagram of a transmission assembly, which is a gear rack, according to one embodiment of the present invention; -
Fig. 5 is a schematic overall structure diagram in which a secondary door is driven by a transmission rope according to one embodiment of the present invention; -
Fig. 6 is a partially schematic structure diagram of the transmission assembly ofFig. 5 ; -
Fig. 7 is a schematic structure diagram of a driving wheel in the transmission assembly ofFig. 5 ; -
Fig. 8 is a partially top view of the transmission assembly ofFig. 5 ; -
Fig. 9 is a schematic structure diagram in which a guide rail of the refrigerator is arranged in a horizontal direction, according to one embodiment of the present invention. -
Fig. 10 is a side view of the main door when a thickening layer is provided, according to one embodiment of the present invention; -
Fig. 11 is a side view of the main door when a vacuum insulation panel is provided, according to one embodiment of the present invention; -
Fig. 12 is a schematic diagram when a sealing strip is not in contact with the secondary door, according to one embodiment of the present invention; -
Fig. 13 is a schematic diagram when the sealing strip is in contact with the secondary door, according to one embodiment of the present invention; and -
Fig. 14 is a schematic diagram when a guide wheel is provided in a guide rail, according to one embodiment of the present invention. - The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments to be described are merely some but not all of embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without paying any creative effort are included the protection scope of the present invention.
- In the description of the present invention, it should be understood that orientation or location relationships indicated by terms "center", "up", "down", "front", "behind", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are the orientation or location relationships based on the accompanying drawings, provided just for ease of describing the present invention and simplifying the description. They are not intended to indicate or imply that the stated devices or elements must have the specific orientation and be constructed and operated in the specific orientation. Hence, they shall not be understood as any limitation to the present invention.
- Terms "first" and "second" are simply used for description, and shall not be understood to indicate or imply relative importance or to imply the amount of the stated technical features. Therefore, features defined with "first" and "second" can explicitly or impliedly include one or more such features. In the description of the present invention, "more" means "two or more than two", unless otherwise specifically stated.
- In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, terms "mount", "connected with" and "connected to" should be understood in a broad sense, for example, it can be fixed connection, and can also be detachable connection or integral connection; and, it can be direct connection, can also be connection by intermediate members, and can be internal connection between two elements. For a person of ordinary skill in the art, the specific meaning of those terms in the present invention can be understood in specific circumstances.
-
Fig. 2 is one specific embodiment of the refrigerator according to the embodiments of the present invention. The refrigerator in this embodiment includes amain door 1; anopening 2 is formed on the door body of themain door 1; aguide rail 3 is provided at an edge of theopening 2, and asecondary door 4 is fitted on theguide rail 3; and thesecondary door 4 is connected to adriving mechanism 5 which can drive thesecondary door 4 to slide along theguide rail 3, and as thesecondary door 4 slides along theguide rail 3, thesecondary door 4 can enclose or open theopening 2. - With regard to the refrigerator provided in this embodiment of the present invention, the
secondary door 4 is provided on themain door 1, and theopening 2 on themain door 1 can be opened by driving thesecondary door 4 to slide along theguide rail 3 by thedriving mechanism 5 so that it is possible to fetch the goods in the refrigerator; and theopening 2 on themain door 1 can be enclosed by driving thesecondary door 4 by thedriving mechanism 5 to slide along theguide rail 3 in the opposite direction. With regard to the refrigerator provided in this embodiment of the present invention, the small-sizedsecondary door 4 can be opened partially or fully when users fetch the commonly used goods, so as to reduce the loss of cooling capacity in the refrigerator, fetch and place goods conveniently for users, and improve the user experience. Furthermore, thesecondary door 4, when opened, is located in themain door 1 and in a same plane as themain door 1, so that it will not block in front of the human body and will not exert an influence on the external space occupied by the refrigerator and the difficulty in fetching goods. By opening the secondary door by sliding thesecondary door 4 along theguide rail 3, the door hinge parts, which are easy to wear, are omitted, and the durability of thesecondary door 4 is enhanced. In addition, the opening or enclosing of thesecondary door 4 can be implemented by thedriving mechanism 5, which is beneficial to the automation development of refrigerators. - The arrangement of the
guide rail 3 at an edge of theopening 2 can be implemented in the following two ways. The first implementation way is to arrange theguide rail 3 at an edge of only one side of theopening 2. In this case, the sliding of thesecondary door 4 can be implemented by limiting the edge of the one side of thesecondary door 4 by theguide rail 3 on the corresponding one side, and as a result, the sliding stability of thesecondary door 4 is relatively low. The second implementation way is to arrangeparallel guide rails 3 at two opposite edges of theopening 2, respectively. Such implementation, in which edges of two sides of thesecondary door 4 are limited byguide rails 3 on the two sides, makes thesecondary door 4 slide more smoothly and stably. Therefore, it is preferable to arrangeguide rails 3 at the two opposite edges of theopening 2, respectively. - In this embodiment, the
driving mechanism 5 includes amotor 6 and atransmission assembly 7; an output shaft of themotor 6 is connected to thetransmission assembly 7 in a transmission way, and thetransmission assembly 7 is connected to thesecondary door 4 in a transmission way; and thetransmission assembly 7 can transform a rotary motion of the output shaft of themotor 6 to a linear motion to drive thesecondary door 4 to slide along theguide rail 3. Power of themotor 6 is transmitted to thesecondary door 4 by thetransmission assembly 7, to drive thesecondary door 4 to slide along theguide rail 3, so as to realize the opening and enclosing of theopening 2 on themain door 1. -
Fig. 2 is one implementation of the transmission assembly 7, including a first gear 71, a first connecting rod 72 and a second connecting rod 73; the first connecting rod 72 is connected to the door body of the main door 1 by a first shaft 75, and the first connecting rod 72 can rotate about the first shaft 75; the second connecting rod 73 is hinged with the first connecting rod 72 by a second shaft 76; the first gear 71 is fixed onto the output shaft of the motor 6; one end of the first connecting rod 72 is a gear structure 721, and the other end thereof is connected with a first guide pin 722; the gear structure 721 is engaged with the first gear 71; a first chute 41 perpendicular to the guide rail 3 is provided on one side of the secondary door 4 close to the driving mechanism 5, and the first guide pin 722 is fitted inside the first chute 41; one end of the second connecting rod 73 is connected with a second guide pin 731 and the other end thereof is connected with a third guide pin 732, and the second guide pin 731 is fitted inside the first chute 41; and a second chute 74 perpendicular to the guide rail 3 is provided on the door body of the main door 1, and the third guide pin 732 is fitted inside the second chute 74. When thesecondary door 4 changes to the opened position from the closed position, themotor 6 starts, and drives thefirst gear 71 to rotate about the motor shaft counterclockwise. Because thefirst gear 71 is engaged with thegear structure 721, thefirst gear 71 drives the first connectingrod 72 to rotate about thefirst shaft 75 clockwise, and drives thesecond shaft 76 to rotate about thefirst shaft 75 clockwise. In this case, thefirst guide pin 722 slides along thefirst chute 41 in a direction away from thefirst gear 71; the second connectingrod 73 rotates about thesecond shaft 76 counterclockwise, so that thesecond guide pin 731 slides along thefirst chute 41 in a direction opposite to the sliding direction of thefirst guide pin 722; and thethird guide pin 732 slides along thesecond chute 74 in a direction the same as the sliding direction of thefirst guide pin 722, so as to drive thesecondary door 4 to slide along theguide rail 3 in a direction close to thefirst gear 71 until theopening 2 is fully opened. When thesecondary door 4 changes to the closed state from the opened state, themotor 6 starts, and drives thefirst gear 71 to rotate about the motor shaft clockwise. Because thefirst gear 71 is engaged with thegear structure 721, thefirst gear 71 drives the first connectingrod 72 to rotate about thefirst shaft 75 counterclockwise, and drives thesecond shaft 76 to rotate about thefirst shaft 75 counterclockwise. In this case, thefirst guide pin 722 slides along thefirst chute 41 in a direction close to thefirst gear 71; the second connectingrod 73 rotates about thesecond shaft 76 clockwise, so that thesecond guide pin 731 slides along thefirst chute 41 in a direction opposite to the sliding direction of thefirst guide pin 722; and thethird guide pin 732 slides along thesecond chute 74 in a direction the same as the sliding direction of thefirst guide pin 722, so as to drive thesecondary door 4 to slide along theguide rail 3 in a direction away from thefirst gear 71 until theopening 2 is fully enclosed. Power of themotor 6 is transmitted to the first connectingrod 72 and the second connectingrod 73 by engaging thefirst gear 71 and thegear structure 721 on the first connectingrod 72, so that the first connectingrod 72 and the second connectingrod 73 drive thesecondary door 4 to slide along theguide rail 3 smoothly and stably, so as to realize the opening and enclosing of theopening 2. The bearing capacity and impact resistance of thetransmission assembly 7 are so high that there is a relatively small abrasion during the transmission. Furthermore, the manufacturing is convenient and it is easy to obtain a relatively high precision when producing a refrigerator. - In the above embodiment, because the
second chute 74 is formed on the door body of themain door 1, strength at the corresponding position of themain door 1 will be reduced. If thesecond chute 74 is damaged, themain door 1 will be scraped entirely. In order to avoid this case, in another embodiment of the present invention, a support rod (not shown) perpendicular to theguide rail 3 is preferably arranged on the door body of themain door 1, and thesecond chute 74 is formed on the support rod. Thethird guide pin 732 is fitted inside thesecond chute 74. Therefore, when thesecond chute 74 is damaged, it is just needed to replace the support rod. This prevents themain door 1 from entirely scraping and also guarantees the strength of themain door 1 not being impacted. - In the above embodiment, because only some of teeth in the
gear structure 721 are used during the swing process of the first connectingrod 72, in order to save material of thegear structure 721 and simplify its processing process, thegear structure 721 is preferably a sector gear structure as shown inFig. 2 . - With reference to
Fig. 3 , thetransmission assembly 7 in one embodiment of the invention also includes asecond gear 77, and thegear structure 721 is engaged with thefirst gear 71 by thesecond gear 77. - Another implementation of the
transmission assembly 7 can adopt a gear rack for transmission, including a transmission gear, a rack and a rack guide rail; the rack guide rail is fixed onto the door body of themain door 1, the gear guide rail is in parallel to theguide rail 3, and the rack can slide along the rack guide rail and one end of the rack is connected to thesecondary door 4; and the transmission gear is connected with an output shaft of themotor 6 in a transmission way, and engaged with the rack. When thesecondary door 4 changes to the opened state from the closed state, themotor 6 starts, and drives the transmission gear to rotate about the motor shaft counterclockwise. In this case, the rack engaged with the transmission gear slides along the rack guide rail so as to drive thesecondary door 4 to slide along theguide rail 3 in a direction close to the transmission gear until theopening 2 is fully opened. When thesecondary door 4 changes to the closed state from the opened state, themotor 6 starts, and drives the transmission gear to rotate about the motor shaft clockwise. In this case, the rack engaged with the transmission gear slides along the rack guide rail so as to drive thesecondary door 4 to slide along theguide rail 3 in a direction away from the transmission gear until theopening 2 is fully closed. The rotary motion of the output shaft of themotor 6 is transformed to a linear motion by the gear rack. Thesecondary door 4 is driven to slide along theguide rail 3, so as to realize the opening and enclosing of theopening 2.Such transmission assembly 7 can ensure a constant transmission ratio, high transmission efficiency, and smooth and stable transmission, so that thesecondary door 4 slides more smoothly and stably along theguide rail 3. In this way, the service life becomes longer. - In the above embodiment, there can be one transmission gear, one rack and one rack guide rail. The
motor 6 drives this transmission gear to rotate when it starts. The rotation of the transmission gear drives the rack engaged with the transmission gear to slide along the rack guide rail, so as to drive thesecondary door 4 to slide along the guide rail and thus to realize the opening and closing of theopening 2. - In another embodiment of the present invention, there can be two transmission gears, two racks and two rack guide rails. With reference to
Fig. 4 , specifically, the transmission gear includes two gears, i.e., athird gear 78 and afourth gear 79. There are tworacks 710 and two rack guide rails 711. The tworacks 710 are spaced apart from each other and in parallel to theguide rail 3, and one end of each of the tworacks 710 is connected with thesecondary door 4. The tworack guide rails 711 are spaced apart from each other and in parallel to theguide rail 3. The tworacks 710 are fitted on the tworack guide rails 711, respectively. Thethird gear 78 is fixed on the output shaft of themotor 6, and is engaged with onerack 710 and thefourth gear 79, respectively. Thefourth gear 79 is engaged with theother rack 710. When thesecondary door 4 changes to the opened state from the closed state, themotor 6 starts and drives thethird gear 78 to rotate about the motor shaft counterclockwise. In this case, thefourth gear 79 engaged with thethird gear 78 rotates about its rotary center clockwise; thethird gear 78 and thefourth gear 79 drive thesecondary door 4 to slide along theguide rail 3 in a direction close to thethird gear 78 until theopening 2 is fully opened, by driving tworacks 710 engaged with them to slide along therack guide rail 711. When thesecondary door 4 changes to the closed state from the opened state, themotor 6 starts, and drives thethird gear 78 to rotate about the motor shaft clockwise. In this case, thefourth gear 79 engaged with thethird gear 78 rotates its rotary center counterclockwise. Thethird gear 78 and thefourth gear 79 drive thesecondary door 4 to slide along theguide rail 3 in a direction away from thethird gear 78 until theopening 2 is fully closed, by driving tworacks 710 engaged with them to slide along therack guide rail 711. Because there are two transmission gears, two racks and two rack guide rails, thesecondary door 4 is driven from two sides. Compared with driving thesecondary door 4 from one side, this implementation enables thesecondary door 4 to be stressed more evenly, preventing thesecondary door 4 from being jammed during the sliding. Therefore, it is preferred that there are two transmission gears, two racks and two rack guide rails. - As shown in
Fig. 5 and Fig. 6 , in another embodiment of the present invention, thetransmission assembly 7 includes aguide block 701 which is arranged along a direction in parallel to theguide rail 3; at both ends of theguide block 701, afirst guide wheel 703 and asecond guide wheel 704 are provided, respectively; adriving wheel 705 is sleeved on the output shaft of themotor 6; thesecondary door 4 includes a slidingbottom plate 702 which is sleeved on theguide block 701 and can slide along theguide block 701; the slidingbottom plate 702 is located between thefirst guide wheel 703 and thesecond guide wheel 704 and connected with atransmission rope 706; thetransmission rope 706 includes a firsttransmission rope segment 7061 and a secondtransmission rope segment 7062 which are located on both sides of the slidingbottom plate 702, respectively; and the firsttransmission rope segment 7061 is passed over thefirst guide wheel 703 and wound onto thedriving wheel 705 in a first direction, and the secondtransmission rope segment 7062 is passed beneath thesecond guide wheel 704 and wound onto thedriving wheel 705 in a direction opposite to the first direction. - The operating process of the above embodiment is as follows. When the
secondary door 4 moves from the opened position to the closed position, the output shaft of themotor 6 drives thedriving wheel 705 to rotate counterclockwise, so as to pull the firsttransmission rope segment 7061 and release the secondtransmission rope segment 7062, so that the transmission rope located between thefirst guide wheel 703 and thesecond wheel 704 moves upward because of being partially stressed and then, guided by theguide block 701 and theguide rail 3 in terms of direction, pulls the slidingbottom plate 702 in order to drive thesecondary door 4 to move upward to reach the closed position. When thesecondary door 4 moves from the closed position to the opened position, the output shaft of themotor 6 drives thedriving wheel 705 to rotate clockwise, so as to pull the secondtransmission rope segment 7062 and release the firsttransmission rope segment 7061, so that the transmission rope located between thefirst guide wheel 703 and thesecond wheel 704 moves downward and then, guided by theguide block 701 and theguide rail 3 in terms of direction, pulls the slidingbottom plate 702 in order to drive thesecondary door 4 to move downward drive to reach the opened state. In a transmission structure shown inFig. 5 , compared with a common transmission structure, the number of components and parts assembled is reduced, and the production efficiency is increased. Furthermore, because the transmission rope is continuously coordinated with the driving wheel and the guide wheels, and the transmission rope is a flexible member, compared with gear transmission, the friction and collision between the teeth generated when engaged with each other are avoided, and as a result, noise generated during the transmission is reduced. - In order to make the stressed direction of the secondary door consistent with the arrangement direction of the
guide rail 3, a portion of thetransmission rope 706 located between thefirst guide wheel 703 and thesecond wheel 704 can be made in parallel to theguide rail 3 by arranging the positions and sizes of thefirst guide wheel 703 and thesecond guide wheel 704. For example, thefirst guide wheel 703 and thesecond wheel 704 can be set to have an equal radius and their centers can be located in a same straight line. Therefore, the stressed direction of the secondary door is made consistent with the arrangement direction of theguide rail 3. This avoids jamming during the movement. - In order to prevent the first
transmission rope segment 7061 and the secondtransmission rope segment 7062 wound onto thedriving wheel 705 from interfering with each other, as shown inFig. 7 , afirst guide groove 7051 and asecond guide groove 7052, which are in parallel to each other, are preferably provided along an outer circumference of thedriving wheel 705; and the firsttransmission rope segment 7061 is passed over thefirst guide wheel 703 and wounded into thefirst guide groove 7051 in a first direction, and is fixedly connected to thefirst guide groove 7051; and the seconddiving rope segment 7062 is passed beneath thesecond guide wheel 704 and wounded into thesecond guide groove 7052 in a direction opposite to the first direction, and is fixedly connected to thesecond guide groove 7052. Therefore, when thesecondary door 4 moves from the opened position to the closed position, the output shaft of themotor 6 drives thedriving wheel 705 to rotate counterclockwise so as to: pull the firsttransmission rope segment 7061 so that the firsttransmission rope segment 7061 is gradually wound into theguide groove 7051; and to release the secondtransmission rope segment 7062 so that the secondtransmission rope segment 7062 is gradually separated from thesecond guide groove 7052, and as a result, transmission rope located between thefirst guide wheel 703 and thesecond guide wheel 704 moves upward because of being partially stressed, and then, guided by theguide block 701 and theguide rail 3 in terms of direction, pulls the slidingbottom plate 702 in order to drive thesecondary door 4 to move upward to reach the closed position. Therefore, by designing thedriving wheel 705 in a structure having two guide grooves can separate the firsttransmission rope segment 7061 and the secondtransmission rope segment 7062 wound onto thedriving wheel 705 from each other, thereby preventing increasing the resistance of the movement of the secondary door due to the contact and friction between the firsttransmission rope segment 7061 and the secondtransmission rope segment 7062 during the transmission. - Wherein, a length of the
transmission rope 706 wound onto thedriving wheel 705 should be enough to allow for a stroke traveled by the secondary door between the fully enclosed position and the fully opened position. As such, the whole movement of the secondary door between the fully enclosed position and the fully opened position can be ensured. Specifically, when the secondary door is in the fully enclosed position (that is, the position shown inFig. 5 ), the length of thetransmission rope 706 wound into thefirst guide groove 7051 should be equal to or greater than the stroke. - It should be noted that, when the secondary door moves to a limiting position, the portion of the
transmission rope 706 wound onto thedriving wheel 705 may have been fully released. Such limiting cases are also in the explanation scope of the "wind" in the embodiment of the present invention. - In the above embodiment, the
transmission rope 706 can be a whole rope, and can also be separated into two segments. When thetransmission rope 706 is a whole rope, the middle portion of thetransmission rope 706 penetrates through and is connected with the slidingbottom plate 702. When thetransmission rope 706 is separated into two segments, as shown inFig. 6 , the two transmission ropes are connected with an upper end and a lower end, of the slidingbottom plate 702, respectively. - As shown in
Fig. 8 , in order to reduce the friction force when the slidingbottom plate 702 slides along theguide block 701,pulleys 7022 can be provided between the slidingbottom plate 702 and theguide block 701. Specifically,rotary pulleys 7022 can be provided on an inner wall of the slidingbottom plate 702 in contact with theguide block 701, and then the slidingbottom plate 702 is sleeved onto theguide block 702. Therefore, the sliding between the slidingbottom plate 702 and theguide block 701 is supported by thepulleys 7022, so that the friction force when the slidingbottom plate 702 slides along theguide block 701 becomes a rolling fiction force which significantly reduces the movement resistance of the secondary door. - Wherein, the
transmission rope 706 is preferably made of a steel rope which is more resistant to loss. - As shown in
Fig. 6 , in order to realize a more stable connection between the slidingbottom plate 702 and thesecondary door 4, it is preferable to form a mountinggroove 7021 on a surface of the slidingbottom plate 702 facing the secondary door. An edge of the secondary door is clamped into the mountinggroove 7021. Therefore, it may prevent the secondary door and the slidingbottom plate 702 from being separated during the transmission. - Because the
driving mechanism 5 of thesecondary door 4 is arranged inside the door body of themain door 1, a thickness of a foam layer on themain door 1 at a corresponding position is reduced, and as a result, the thermal insulation performance of themain door 1 is decreased. In order to keep the thermal insulation performance of themain door 1, as shown inFig.10 , a thickeninglayer 11 which is protruded from a surface of an inner wall is provided on the inner wall of themain door 1 at a position corresponding to thedriving mechanism 5. By the arrangement of the thickeninglayer 11, the thermal insulation performance of themain door 1 may be enhanced. - In addition, with reference to
Fig. 11 , a vacuum insulation panel 8 is provided on an external surface of thedriving mechanism 5. By the arrangement of the vacuum insulation panel 8, the thermal insulation performance of themain door 1 is enhanced. - With reference to
Fig. 10 to Fig. 13 , in order to ensure the sealing performance of theopening 2 when thesecondary door 4 is closed, a sealingstrip 9 is provided around an inner wall of theopening 2, agroove 91 is provided on one side of the sealingstrip 9 facing thesecondary door 4, andelastic projections 92 are provided inside thegroove 91; and when thesecondary door 4 is closed, an edge of thesecondary door 4 can be extended into thegroove 91 to press against theelastic projections 92. At this time, theelastic projections 92 are in close contact with thesecondary door 4, which ensures the sealing performance of theopening 2 when the secondary door is closed. - To prolong the service life of the
elastic projections 92 and improve the sealing performance and easy sliding at the junction of thesecondary door 4 and thesealing strip 9, external surfaces of theelastic projections 92 are planted with fluff by flocking. Therefore, the friction resistance of theelastic projections 92 is increased, thereby prolonging the service time of theelastic projections 92 and improving the sealing performance and easy sliding at the junction of thesecondary door 4 and thesealing strip 9. - Because the sealing
strip 9 is arranged on the inner wall of theopening 2 and a temperature on the inner wall of theopening 2 is relatively low, the sealingstrip 9 is required to keep a good elasticity at low temperature, so as to ensure the sealing performance of theopening 2. The material of the sealingstrip 9 is preferably EPDM (Ethylene-Propylene-Diene Monomer), TPE (Thermoplastic Elastomer) or TPR (Thermoplastic Rubber). The three materials mentioned above have a good elasticity at low temperature, so that the sealing performance of theopening 2 is ensured. - In order to enhance the thermal insulation performance of the refrigerator, the
secondary door 4 is made of heat insulating glass. The heat insulating glass may prevent cooling capacity inside the refrigerator from leaking, so that the thermal insulation performance of the refrigerator is enhanced. In addition, users may also check the storage condition of goods from thesecondary door 4, when themain door 1 and thesecondary door 4 are both closed. It is helpful to fetch goods. - The
guide rail 3 in this embodiment can be arranged in a vertical direction, and in this case, thesecondary door 4 can slide up and down along theguide rail 3. In addition, as shown inFig. 9 , theguide rail 3 can also be arranged in a horizontal direction, and in this case, thesecondary door 4 can slide left and right along theguide rail 3. If a storage rack is horizontally arranged inside themain door 1, when theguide rail 3 is arranged in a horizontal direction, users may fetch only goods on half of the storage rack even if thesecondary door 4 is fully opened; and when theguide rail 3 is arranged in a vertical direction, users may fetch goods on the whole storage rack even if thesecondary door 4 is partially opened. For example, users only need to open the upper part of thesecondary door 4 to fetch goods on the upper layer of the storage rack, and this thus reduces the loss of cooling capacity. Therefore, it is preferable to arrange theguide rail 3 in a vertical direction. - With reference to
Fig. 14 , in order to make thesecondary door 4 slide more stably along theguide rail 3, arotary guide wheel 31 is provided on inner walls of two sides of theguide rail 3, when thesecondary door 4 slides along theguide rail 3, the surfaces of the two sides of thesecondary door 4 are fitted to theguide wheel 31, respectively. The position of thesecondary door 4 is limited by theguide wheel 31, thereby preventing thesecondary door 4 from swinging toward the two sides during the sliding and allowing thesecondary door 4 to slide more smoothly and stably along theguide rail 3. In addition, the material of theguide wheel 31 is preferably rubber or nylon, and this may prevent theguide wheel 31 from scratching the glasssecondary door 4 to influence the appearance. - The above description is merely specific implementation of the present invention, and the protection scope of the present invention is not limited thereto. Changes or replacements readily obtained by any technical person who is familiar with the technical field within the disclosed technical scope of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (12)
- A refrigerator, comprising a main door, characterized in that an opening is formed on a door body of the main door; a guide rail is provided at an edge of the opening, and a secondary door is fitted on the guide rail; and the secondary door is connected with a driving mechanism which can drive the secondary door to slide along the guide rail, and as the secondary door slides along the guide rail, the secondary door can enclose or open the opening.
- The refrigerator according to claim 1, characterized in that the driving mechanism comprises a motor and a transmission assembly; an output shaft of the motor is connected to the transmission assembly in a transmission way, and the transmission assembly is connected to the secondary door in a transmission way; and the transmission assembly can transform a rotary motion of the motor output shaft to a linear motion to drive the secondary door to slide along the guide rail.
- The refrigerator according to claim 2, characterized in that the transmission assembly comprises a first gear, a first connecting rod and a second connecting rod; the first connecting rod is connected to the door body of the main door by a first shaft, and the first connecting rod is rotatable about the first shaft; the second connecting rod is hinged with the first connecting rod by a second shaft; the first gear is fixed onto the output shaft of the motor; one end of the first connecting rod is a gear structure, and the other end thereof is connected with a first guide pin; the gear structure is engaged with the first gear; a first chute perpendicular to the guide rail is provided on one side of the secondary door close to the driving mechanism, and the first guide pin is fitted inside the first chute; one end of the second connecting rod is connected with a second guide pin and the other end thereof is connected with a third guide pin, and the second guide pin is fitted inside the first chute; and a second chute perpendicular to the guide rail is provided on the door body of the main door, and the third guide pin is fitted inside the second chute.
- The refrigerator according to claim 2, characterized in that the transmission assembly comprises a transmission gear, a rack and a rack guide rail; the rack guide rail is fixed onto the door body of the main door, the gear guide rail is in parallel to the guide rail, and the rack is slidable along the rack guide rail and one end of the rack is connected to the secondary door; and the transmission gear is connected with the output shaft of the motor in a transmission way, and engaged with the rack.
- The refrigerator according to claim 2, characterized in that the transmission assembly comprises a guide block which is arranged along a direction in parallel to the guide rail; at both ends of the guide block, a first guide wheel and a second guide wheel are provided, respectively; a driving wheel is sleeved on the motor output shaft; the secondary door comprises a sliding bottom plate which is sleeved on the guide block, and the sliding bottom plate is located between the first guide wheel and second guide wheel and connected with a transmission rope; the transmission rope comprises a first transmission rope segment and a second transmission rope segment which are located on both sides of the sliding bottom plate, respectively; and the first transmission rope segment is passed over the first guide wheel and wound onto the driving wheel in a first direction, and the second transmission rope segment is passed beneath the second guide wheel and wound onto the driving wheel in a direction opposite to the first direction.
- The refrigerator according to claim 5, characterized in that a first guide groove and a second guide groove, which are in parallel to each other, are provided along an outer circumference of the driving wheel; and the first transmission rope segment is passed over the first guide wheel and wounded into the first guide groove in a first direction, and the second diving rope segment is passed beneath the second guide wheel and wounded into the second guide groove in a direction opposite to the first direction.
- The refrigerator according to any one of claims 2 to 6, characterized in that the driving mechanism is arranged inside the door body of the main door, and a thickening layer which is protruded from a surface of an inner wall is provided on the inner wall of the main door at a position corresponding to the driving mechanism.
- The refrigerator according to any one of claims 2 to 6, characterized in that the driving mechanism is arranged inside the door body of the main door, and a vacuum insulation panel is provided on an external surface of the driving mechanism.
- The refrigerator according to claim 1, characterized in that a sealing strip is provided around an inner wall of the opening, a groove is provided on one side of the sealing strip facing the secondary door, and elastic projections are provided inside the groove; and when the secondary door is closed, an edge of the secondary door can be extended into the groove to press against the elastic projections.
- The refrigerator according to claim 9, characterized in that an external surface of each of the elastic projections is planted with fluff by flocking.
- The refrigerator according to claim 1, characterized in that the secondary door is made of heat insulating glass.
- The refrigerator according to claim 1, characterized in that the guide rail is arranged in a vertical direction, and the secondary door is slidable along the guide rail up and down.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201510009262 | 2015-01-07 | ||
CN201510107398.3A CN106032958B (en) | 2015-01-07 | 2015-03-11 | A kind of refrigerator |
PCT/CN2015/095263 WO2016110161A1 (en) | 2015-01-07 | 2015-11-23 | Refrigerator |
Publications (4)
Publication Number | Publication Date |
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EP3091315A1 true EP3091315A1 (en) | 2016-11-09 |
EP3091315A4 EP3091315A4 (en) | 2017-08-23 |
EP3091315B1 EP3091315B1 (en) | 2021-08-11 |
EP3091315B8 EP3091315B8 (en) | 2021-11-03 |
Family
ID=56355491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15876661.8A Active EP3091315B8 (en) | 2015-01-07 | 2015-11-23 | Refrigerator |
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EP (1) | EP3091315B8 (en) |
WO (1) | WO2016110161A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107856590A (en) * | 2017-11-22 | 2018-03-30 | 上汽大众汽车有限公司 | Heel row mobile operation table |
CN110094132B (en) * | 2018-01-31 | 2024-02-20 | 宁波方太厨具有限公司 | Oven door opening structure |
CN110173760A (en) * | 2019-06-26 | 2019-08-27 | 广东美的制冷设备有限公司 | Air conditioner indoor unit |
CN114251902B (en) * | 2020-09-25 | 2023-09-15 | 青岛海尔电冰箱有限公司 | Refrigerator with a refrigerator body |
CN114701530B (en) * | 2022-04-02 | 2023-07-28 | 广东电网有限责任公司惠州供电局 | Safety control's transmission line track transportation equipment |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH07276999A (en) * | 1994-04-15 | 1995-10-24 | Toyoda Gosei Co Ltd | Glass run for automobile |
JP4838949B2 (en) * | 2001-06-26 | 2011-12-14 | 三洋昭和パネルシステム株式会社 | Stopper device for door in sliding door opening and closing device such as refrigerator |
KR20030043221A (en) * | 2001-11-27 | 2003-06-02 | 삼성전자주식회사 | Sub-door opening and closing device for refrigerator |
JP2005124793A (en) * | 2003-10-23 | 2005-05-19 | Daiwa Industries Ltd | Refrigerating showcase |
CN1699901A (en) * | 2004-05-18 | 2005-11-23 | 乐金电子(天津)电器有限公司 | Domestic bar door of refrigerator |
JP2007132605A (en) * | 2005-11-11 | 2007-05-31 | Hitachi Appliances Inc | Refrigerator and door closing device |
KR20100071306A (en) * | 2008-12-19 | 2010-06-29 | 삼성전자주식회사 | Refrigerator |
CN102022889B (en) * | 2010-12-10 | 2013-01-23 | 海信科龙电器股份有限公司 | Rear cover component structure of bar counter door of refrigerator |
KR101728196B1 (en) * | 2013-04-26 | 2017-04-18 | 엘지전자 주식회사 | Refrigerator |
-
2015
- 2015-11-23 WO PCT/CN2015/095263 patent/WO2016110161A1/en active Application Filing
- 2015-11-23 EP EP15876661.8A patent/EP3091315B8/en active Active
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EP3091315A4 (en) | 2017-08-23 |
WO2016110161A1 (en) | 2016-07-14 |
EP3091315B8 (en) | 2021-11-03 |
EP3091315B1 (en) | 2021-08-11 |
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