Automatic door opening and closing device and refrigerator
By designing an automatic door opening and closing device in the refrigerator, using a retractable push rod and locking structure, the automatic opening and closing of the push rod and the door body is achieved, which solves the reduction in the contact area between the push rod and the door body and the user forgets to close it in the prior art. The problem has improved the energy efficiency of the refrigerator and the freshness effect of the food.
Patent Information
- Application Number
- CN202010045136.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-01-16
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2040-01-16
AI Technical Summary
When the push rod pushes the door body to open, the contact area between the push rod and the door body gradually decreases, resulting in only a part of the force on the push rod acting on the door body, and when the user forgets to close it, it may cause the door body to remain in constant motion. In the open state, causing energy waste and food deterioration.
An automatic door opening and closing device is designed, including a retractable push rod, a first driving member, a locking structure and a transmission member. The locking structure enables locking and unlocking of the push rod and the door body, and pushing the door body when the push rod extends out. The door body is automatically closed when retracted to prevent the door body from being in the open state.
The force on the push rod is effectively acted on the door body, ensuring that the door body is automatically closed after the user is opened, avoiding energy waste and food deterioration, and improving the convenience of the refrigerator and energy efficiency.
Smart Images
Figure CN113123680B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of refrigerators, and in particular relates to an automatic door opening and closing device and a refrigerator. Background Art
[0002] With the improvement of residents' living standards, refrigerators have become essential household appliances. The capacity of refrigerators has also begun to expand, and refrigerator doors have become heavier. However, the weight of refrigerator doors will make it inconvenient for people to open them. In particular, in order to improve the sealing performance, the door seals with greater suction force are used.
[0003] When the door is opened, it is necessary to overcome the closing force provided by the hinge and the suction force of the door seal, which requires a large force. In order to achieve easy door opening, an automatic door opening device has emerged. After receiving the door opening signal, it pushes the door open for a distance, and then manually opens and closes the refrigerator door.
[0004] The automatic door opening device pushes the door open a certain distance and waits for the user to open it. In actual applications, it is often the case that the user forgets to open the door at this time, and the door will remain open, which may cause the internal temperature to rise, causing food to spoil, and causing the refrigerator to be in a continuous cooling state, resulting in energy waste.
[0005] In addition, when the push rod pushes the door body to open, the push rod moves in a straight line, while the door body rotates around the intersection axis. That is, in the process of the push rod pushing the door body to open, the contact area between the push rod and the door body gradually decreases, and only a part of the force on the push rod acts on the door body.
[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0007] In view of the above problems in the prior art, the present invention provides an automatic door opening and closing device, which can realize automatic opening and closing of a door body and prevent the door body from being in an open state all the time.
[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:
[0009] An automatic door opening and closing device, which is used to realize automatic opening and closing of the door body, comprises:
[0010] A push rod, which is retractable and used to push the door body open and pull the door body closed;
[0011] A first driving component, used for driving the push rod to move telescopically;
[0012] The locking structure is used to realize the locking and unlocking of the connection between the push rod and the door body. The locking structure has a locking opening arranged at the extended end of the push rod and a retractable locking column arranged on the door body and matching with the locking opening.
[0013] Furthermore, the locking structure also has a second driving component arranged on the door body for driving the lock column to extend and retract.
[0014] Furthermore, a connecting groove for accommodating the extended end of the push rod is provided on the door body, and the lock column is telescopically located in the connecting groove.
[0015] Furthermore, a retractable second switch is provided at the connecting groove, which is used to be pushed and triggered after the push rod extends into the connecting groove.
[0016] Furthermore, the locking opening is a strip-shaped opening in the left-right direction, and the locking column is a cylinder.
[0017] Furthermore, the push rod comprises a push rod body and a hinged joint hingedly arranged at the end of the push rod body, and the locking opening is provided on the hinged joint.
[0018] Furthermore, when the push rod pushes the second switch to retract, the second driving component is controlled to push the lock column to extend, thereby locking the connection between the push rod and the door body.
[0019] Furthermore, after the push rod is extended into position, the second driving component is controlled to push the lock column to retract, thereby unlocking the connection between the push rod and the door body.
[0020] Furthermore, after the push rod is extended into position, if the door body is not opened within a set time, the second driving component is controlled to push the lock column to extend, and the first driving component is controlled to drive the push rod to retract, so that the door body is driven to close.
[0021] Furthermore, it also includes a transmission component arranged between the first driving component and the push rod, and the push rod is provided with a rack meshing with the transmission component.
[0022] Furthermore, it also includes a base fixed on the box body, and the push rod is located on the base so as to be telescopic forward and backward.
[0023] Furthermore, it also includes a first switch that is triggered after the push rod is extended and retracted into place and is used to cut off the power supply circuit of the first driving component.
[0024] Furthermore, the transmission component has a first gear, on which a matching edge coaxially matched with the first switch is provided, and the matching edge has a non-triggering segment and triggering segments located at both ends of the non-triggering segment.
[0025] Furthermore, the distance between the triggering section and the axis of the first gear is smaller than the distance between the non-triggering section and the axis of the first gear.
[0026] Based on the above-mentioned automatic door opening and closing device, the present invention also provides a refrigerator with the above-mentioned automatic door opening and closing device, which can realize automatic opening and closing of the door body to avoid the door body being in an open state all the time.
[0027] A refrigerator, comprising:
[0028] Box;
[0029] A door body, which is hingedly arranged on the box body;
[0030] The above-mentioned automatic door opening and closing device is used to realize automatic opening and closing of the door body.
[0031] Furthermore, the automatic door opening and closing device is arranged on a side away from the hinge axis.
[0032] Compared with the prior art, the advantages and positive effects of the present invention are: by setting a locking structure, it is used to achieve the locking and unlocking of the connection between the push rod and the door body; it is conducive to achieving the connection between the push rod and the door body, and the door body can be pushed open when the push rod is extended outward, and the door body can be driven to close when the push rod is retracted inward; it is conducive to applying the force on the push rod to the door body, and the connection and disconnection between the push rod and the door body are achieved through the locking and unlocking of the locking structure, and the push rod can be retracted after the user opens the door body to avoid the extended push rod interfering with the user's movements or vision, and to avoid impact on the push rod. By setting a locking port and a retractable lock column, it is used to achieve the locking and unlocking between the lock column and the push rod, and the locking and unlocking of the connection between the push rod and the door body are achieved.
[0033] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0035] Figure 1 A schematic structural diagram of an embodiment of the automatic door opening and closing device proposed by the present invention;
[0036] Figure 2 for Figure 1 Schematic diagram of the structure after the middle door body is opened by the user;
[0037] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;
[0038] Figure 4 for Figure 1 A schematic diagram of the structure of the automatic door opening and closing device in a transverse section after the middle door body is closed;
[0039] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part;
[0040] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the middle B area;
[0041] Figure 7 for Figure 5 A schematic diagram of the enlarged structure of the middle part;
[0042] Figure 8 It is a structural schematic diagram when the push rod moves forward to the door body;
[0043] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of the middle part;
[0044] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of the middle C area;
[0045] Fig.11 for Fig. 9 Schematic diagram of the cross-sectional structure in the middle DD direction;
[0046] Fig.12 for Fig.11 Schematic diagram of the enlarged structure of the middle E area;
[0047] Fig.13 It is a structural schematic diagram of the process in which the push rod pushes the door body to extend and retract;
[0048] Fig.14 for Fig.13 A schematic diagram of the enlarged structure of the middle part;
[0049] Fig.15 for Fig.14 Schematic diagram of the enlarged structure of the middle F region;
[0050] Fig.16 It is a structural schematic diagram of the door being opened by the user and the push rod being retracted. DETAILED DESCRIPTION
[0051] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0052] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the positional relationship relative to the user when the refrigerator is in normal use. The terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0054] See also Figure 1-Figure 16 , is an embodiment of the automatic door opening and closing device proposed by the present invention, an automatic door opening and closing device 300, which is used to realize the automatic opening and closing of the refrigerator door body 200, the automatic door opening and closing device 300 includes: a push rod 10, a first driving component 20 and a locking structure 30, the push rod 10 can be set on the box body 100 to be telescopic, when the push rod 10 extends forward, it can push the door body 200 to open, and when the push rod 10 retracts backward, it can pull the door body 200 to close, and the first driving component 20 is used to drive the telescopic movement of the push rod 10. The locking structure 30 is arranged between the push rod 10 and the door body 200, and is used to realize the locking and unlocking of the connection between the push rod 10 and the door body 200; that is, through the locking structure, the connection and locking between the push rod 10 and the door body 200 can be realized, so that when the push rod 10 moves, it can drive the movement of the door body 200, and when the push rod 10 is extended and retracted, it drives the opening and closing of the door body 200; it is also possible to realize the unlocking of the connection between the push rod 10 and the door body 200, that is, the push rod 10 and the door body 200 are separable, so that after the door body 200 is opened by the user, the push rod 10 can be retracted.
[0055] In this embodiment, a locking structure 30 is provided between the push rod 10 and the door body 200 to realize locking and unlocking of the connection between the push rod 10 and the door body 200; this is beneficial to realizing the connection between the push rod 10 and the door body 200, and the door body 200 can be pushed open when the push rod 10 is extended outward, and the door body 200 can be driven to close when the push rod 10 is retracted inward; this is beneficial to applying the force on the push rod 10 to the door body 200, and the connection and release of the push rod 10 and the door body 200 are realized through the locking and unlocking of the locking structure 30, and the push rod can be retracted after the user opens the door body 200 to prevent the extended push rod 10 from interfering with the user's movements or line of sight, and to avoid impact on the push rod 10.
[0056] The door body 200 is hingedly arranged on the box body 100, and the push rod 10 is arranged on the side away from the hinge axis, which is conducive to the increase of torque and facilitates the door body 200 to be pushed open. After the push rod 10 pushes the door body 200 to open, the angle of the door body 200 is generally between 5° and 15°. When taking food out of the refrigerator, the user still needs to open the door body 200 by hand; at this time, the user needs less force when opening.
[0057] In other embodiments, the push rod 10 may be disposed on the door body 200 .
[0058] See also Figure 6 As shown, the locking structure 30 has a locking port 11 provided at the extended end of the push rod 10 and a locking column 32 provided on the door body 200. The locking port 11 is provided on the push rod 10 near the end of the door body 200. The locking column 32 is retractable and matches the locking port 11. The lock hook 31 and the lock rod 32 have a mutually matched locking state and a mutually separable unlocking state. When the locking column 32 extends into the locking port 11, the locking structure 30 is locked; when the locking column 32 retracts and leaves the locking port 11, the locking structure 30 is unlocked.
[0059] When the push rod 10 pushes the door body 200 to open or pulls the door body 200 to close, the locking opening 11 and the locking column 32 are locked with each other, so that the push rod 10 and the door body 200 are connected and locked. After the push rod 10 pushes the door body 200 open, the locking opening 11 and the locking column 32 are in an unlocked state that can be separated from each other. After the door body 200 is continued to be opened by the user, the push rod 200 retracts; if the user does not continue to open the door body 200 within the set time, the door body 200 needs to be closed at this time, that is, the locking opening 11 and the locking column 32 are locked with each other, and the push rod 10 is retracted backwards to drive the door body 200 to close. When the door body 200 is in the closed state, the locking structure 30 can be in a locked state, an unlocked state, or a mutually separated state; preferably, the locking structure 30 is set to be in a mutually separated state.
[0060] The locking structure 30 also has a second driving component 31 disposed on the door body 200 for driving the lock column 32 to extend and retract. The second driving component 33 controls the extension and retraction of the lock column 32, so that the locking port 11 and the lock column 32 are locked or separated from each other.
[0061] See also Figure 3 As shown, a connecting groove 201 is provided on the door body 200 for accommodating the extended end of the push rod 10, so that the locking port 11 extends into the connecting groove 201, and the lock column 32 is retractably located in the connecting groove 201. A second switch 33 is provided at the connecting groove 201, and the second switch 33 can be retracted in the front-back direction. The second switch 33 is used to push the second switch 33 to move after the push rod 10 extends into the connecting groove 201, and trigger the second switch 33. The retractable second switch 33 is provided, and after the extended end of the push rod 10 extends into the connecting groove 201, the push rod pushes the second switch 33 to move backward, triggering the second switch 33; and then controlling the second driving component 31 to start, pushing the lock column 32 to extend. It is ensured that after the locking port 11 is in place, the lock column 32 is pushed out, so that the lock column 32 extends into the locking port 11, and the connection and locking between the push rod 10 and the door body 200 are realized.
[0062] The locking opening 11 is preferably a strip opening in the left-right direction, and the locking column 32 is a cylinder. When the push rod 10 pushes the door body 200 to open, the push rod 10 moves forward linearly, and the door body 200 rotates around its hinge axis, so as the door body 200 opens, the locking column 32 moves in the locking opening 11.
[0063] In other embodiments, the push rod 10 may also have a push rod body and a hinge joint hingedly arranged at the end of the push rod body, and the locking port 11 is provided on the hinge joint; during the opening process of the door body 200, the hinge joint is rotated to make the hinge joint and the door body 200 relatively stationary.
[0064] After the push rod 10 is extended to the right position, the second driving component 31 is controlled to push the lock column 32 to retract, so as to unlock the connection between the push rod 10 and the door body 200. At this time, the user can open the door body 200. If the door body 200 is not opened by the user within the set time, the second driving component 31 is controlled to push the lock column 32 to extend, so that the locking port 11 and the lock column 32 are locked with each other; then the first driving component 20 is activated to drive the push rod 10 to retract, so that the door body 200 is driven to close.
[0065] See also Figure 5As shown, the automatic door opening and closing device 300 further includes a transmission component 50 disposed between the first driving component 20 and the push rod 10, and a rack 13 meshing with the transmission component 50 is disposed on the push rod 10. The rack 13 is also provided to facilitate the transmission of a larger force to the push rod 10 and the telescopic movement of the push rod 10. The automatic door opening and closing device 300 further includes a base 90 fixedly mounted on the box body 100, and the push rod 10 is located in a slideway on the base 90 so as to be telescopic.
[0066] The transmission component 50 is a gear set, and the first driving component 20 is a motor. After the first driving component 20 rotates forward, the first driving component 20 can drive the transmission component 50 to rotate, thereby causing the rack 13 to move forward, so that the push rod 10 extends forward; after the push rod 10 extends forward to the right position, the first driving component 20 is powered off and stops. After the first driving component 20 rotates reversely, the first driving component 20 can drive the transmission component 50 to rotate, thereby causing the rack 13 to move backward, so that the push rod 10 retracts backward; after the push rod 10 retracts backward to the right position, the first driving component 20 is powered off and stops.
[0067] See also Figure 7As shown, in order to realize the automatic stop of the first driving component 20 after the push rod 10 moves to the right position, a first switch 61 for cutting off the power supply circuit of the first driving component 20 is provided. After the push rod 10 is extended or retracted to the right position, the first switch 61 is triggered, and the main controller controls the power supply circuit of the first driving component 20 to cut off the power, so that the first driving component 20 stops. Specifically, the transmission component 50 has a first gear 51, and a matching edge 62 is coaxially provided on the first gear 51. The matching edge 62 matches the first switch 61, and the matching edge 62 has a non-triggering section 621 and a triggering section 622 located at both ends of the non-triggering section 621; when the push rod 10 is telescopically moved, the first gear 51 rotates, and the first switch 61 abuts against the non-triggering section 621, so that the first switch 61 is in a closed state, and the first switch 61 and the matching edge 62 move relatively; when the push rod 10 is extended or retracted to the right position, the first switch 61 contacts the non-triggering section 621 and contacts the triggering section 622, thereby triggering the first switch 61. The first switch 61 is a micro switch. By setting the distance between the non-triggering section 621 and the triggering section 62 and the first switch 61 to be different, the first switch 61 can be triggered when reaching the triggering section 62. When the push rod 10 starts to extend or lock in, the first switch 61 contacts the triggering section 622, and the first driving component 20 starts to rotate, driving the first gear 51 to rotate, so that the first switch 61 contacts the non-triggering section 621; that is, after the first gear 51 starts to rotate, the first switch 61 transitions from contacting the non-triggering section 621 to contacting the triggering section 622. It is preferred to set an arc-shaped transition section between the triggering section 622 and the non-triggering section 621, which is conducive to the contact transition between the first switch 61 and the mating edge 62. It is preferably set that the distance between the triggering section 622 and the axis of the first gear 51 is smaller than the distance between the non-triggering section 621 and the axis of the first gear 51.
[0068] In other embodiments, the distance between the triggering section 622 and the axis of the first gear 51 may be set to be greater than the distance between the non-triggering section 621 and the axis of the first gear 51 .
[0069] See also Figure 1-Figure 16 As shown, the working process of the automatic door opening and closing device 300 is described, including the following steps:
[0070] S10. The first driving component 20 is started, driving the push rod 10 to move outward, so that the locking structures are locked with each other, and continue to push the door body 200 to open.
[0071] After receiving the instruction to open the door body 200, the main controller starts the first driving component 20 to rotate forward, and drives the push rod 10 to extend forward through the transmission component 50; when the extended end of the lock push rod 10 extends into the connecting groove 201, the push rod pushes the second switch 33 to move backward, triggering the second switch 33; then the second driving component 31 is controlled to start, pushing the lock column 32 to extend, so that the lock column 32 extends into the locking port 11, realizing the connection and locking between the push rod 10 and the door body 200; then the push rod 10 continues to move forward, so that the door body 200 is opened.
[0072] S20. After the push rod 10 is extended and moved to a position, the first driving component 20 stops and the locking structure is unlocked.
[0073] When the push rod 10 is extended and moved into position, the first switch 61 is triggered to stop the first driving component 20 ; the second driving component 31 is started to drive the lock cylinder 32 to retract, thereby unlocking the locking port 11 and the lock cylinder 32 .
[0074] S30. Determine whether the door body 200 is continuously opened by the user within the set time, if yes, proceed to step S40; if not, proceed to step S50.
[0075] S40. Start the first driving component 20 to rotate in the opposite direction, driving the push rod 10 to retract backwards; the user closes the door 200 after taking the food.
[0076] S50. The locking structure is locked, and the first driving component 20 is started to rotate in the opposite direction, driving the push rod 10 to retract backwards, and closing the door body 200.
[0077] The second driving component 31 is started to push the lock column 32 out, so that the lock column 32 extends into the locking port 11, and the connection and locking between the push rod 10 and the door body 200 is realized; then the first driving component 20 is started to rotate in the opposite direction, so that the push rod 10 retracts backwards, driving the door body 200 to close. After the door body 200 is closed, the second driving component 31 is started to drive the lock column 32 to retract, and the locking port 11 and the lock column 32 are unlocked; then the push rod 10 continues to lock backwards, and after retracting into place, the first switch 61 is triggered to stop the first driving component 20.
[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.
Claims
1. An automatic door opening and closing device, characterized in that: It is used to realize automatic opening and closing of the door, including: A push rod, which is retractable and used to push the door body open and pull the door body closed; A first driving component, used for driving the push rod to move telescopically; A locking structure, which is used to achieve locking and unlocking of the connection between the push rod and the door body, and the locking structure comprises a locking opening arranged at the extended end of the push rod, and a retractable locking column arranged on the door body and matching the locking opening; The locking structure also has a second driving component arranged on the door body for driving the lock column to extend and retract; a connecting groove for accommodating the extended end of the push rod is opened on the door body, and a second switch is arranged at the connecting groove for the push rod to be pushed and triggered after the push rod extends into the connecting groove; After the push rod is extended to the right position, if the door body is not opened within a set time, the second driving component is controlled to push the lock column to extend, and the first driving component is controlled to drive the push rod to retract, so that the door body is driven to close.
2. The automatic door opening and closing device according to claim 1, characterized in that: The locking column is telescopically located in the connecting groove.
3. The automatic door opening and closing device according to claim 2, characterized in that: The second switch can be telescopically arranged.
4. The automatic door opening and closing device according to any one of claims 1 to 3, characterized in that: The locking opening is a strip-shaped opening in the left-right direction, and the locking column is a cylinder.
5. The automatic door opening and closing device according to any one of claims 1 to 3, characterized in that: The push rod comprises a push rod body and a hinged head hingedly arranged at the end of the push rod body, and the locking opening is arranged on the hinged head.
6. The automatic door opening and closing device according to any one of claims 1 to 3, characterized in that: It also includes a first switch that is triggered after the push rod is extended and retracted into place and is used to cut off the power supply circuit of the first driving component.
7. The automatic door opening and closing device according to claim 6, characterized in that: It also includes a transmission component arranged between the driving component and the push rod, the transmission component has a first gear, a matching edge coaxially arranged on the first gear and matching with the first switch, the matching edge has a non-trigger segment and trigger segments located at both ends of the non-trigger segment.
8. A refrigerator, characterized in that: include: Box; A door body, which is hingedly arranged on the box body; The automatic door opening and closing device according to any one of claims 1 to 7 is used to realize automatic opening and closing of the door body.