Hovering door assembly and refrigerator

Abstract

The utility model discloses a hovering door component and refrigerator, including the fixed part that is used for connecting the doorframe and be used for connecting the rotating shaft of the door body, the rotating shaft and the fixed part are rotatingly connected through the ratchet wheel and pawl intermittent motion mechanism, the pawl is controlled by the telescoping mechanism to stretch out and draw back relative to the ratchet wheel, therefore, the pawl clamps or releases the ratchet wheel. Hovering of the door body is achieved through the ratchet wheel and pawl intermittent movement mechanism, clamping or releasing of the ratchet wheel by the pawl is controlled through the combination of the magnetic field and the reset spring, the structure is simple, control is convenient, and automatic door opening and closing of the refrigerator door body are controlled through the gear and rack mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to door technical field, especially relates to hovering door subassembly and refrigerator. BACKGROUND

[0002] Traditional refrigerator does not have hovering function, usually through the plastic material door closer and hinge cooperation, realize the maximum opening angle and close tightly of refrigerator door body. But in the process of opening the door, cannot achieve hovering, refrigerator will be closed gradually because of its inertia, at this moment need to hand the door body and prevent the refrigerator door body from closing. UTILITY MODEL CONTENTS

[0003] To solve the problem that the door cannot hover, the utility model provides a hovering door subassembly, which realizes the hovering of the door body by using a ratchet and pawl intermittent motion mechanism, and has a simple structure and is convenient to control.

[0004] The utility model discloses a technical scheme that designs a hovering door subassembly, which comprises a fixing part for connecting a door frame and a rotating shaft for connecting a door body, the rotating shaft is rotatably connected with the fixing part through a ratchet and pawl intermittent motion mechanism, the pawl is controlled to extend or retract relative to the ratchet by a telescopic mechanism, so that the pawl can be engaged with or released from the ratchet.

[0005] In some embodiments, the ratchet is fixedly connected with the rotating shaft, the telescopic mechanism is arranged on the fixing part, the telescopic mechanism comprises a telescopic part and a driving part for controlling the telescopic part to extend or retract along the radial direction of the ratchet, and the pawl is arranged on the telescopic part.

[0006] In some embodiments, the driving part is an electromagnet, the pawl is made of iron, and the telescopic part is a spring. The electromagnet generates a magnetic force to attract the pawl, so that the pawl moves relative to the ratchet teeth of the ratchet against the restoring force of the spring.

[0007] In some embodiments, the ratchet is an internal tooth ratchet, the telescopic mechanism further comprises a stop disc coaxially arranged with the rotating shaft, the stop disc is fixed relative to the fixing part, the stop disc is provided with a radial extension hole, the spring is arranged in the radial extension hole, one end of the spring is connected to the bottom end of the radial extension hole, and the other end of the spring is connected to the pawl.

[0008] In some embodiments, the pawl is a clamping block, the end of the radial extension hole is provided with a containing groove for containing the clamping block, and the restoring force of the spring pulls the clamping block into the containing groove, so that the ratchet can rotate freely relative to the stop disc.

[0009] In some embodiments, a control switch arranged on the door body is further included, and the control switch controls the on-off of the current of the electromagnet.

[0010] In some embodiments, the rotation control device further comprises a rotation control device.

[0011] In some embodiments, the rotation control device comprises a gear coaxially arranged outside the rotation shaft and a rack engaged with the gear, the movement of the rack being controlled by the telescopic device.

[0012] In some embodiments, the rotation shaft comprises a cylindrical shell, the gear is arranged on the outer wall of the shell, and the ratchet of the ratchet wheel is arranged on the inner wall of the shell.

[0013] A refrigerator comprising the hovering door assembly.

[0014] Compared with the prior art, the hovering door assembly has the following beneficial effects:

[0015] The hovering door assembly utilizes the intermittent movement mechanism between the ratchet wheel and the pawl to realize the hovering of the door body, utilizes the magnetic field combined with the reset spring to control the clamping or releasing of the pawl on the ratchet wheel, has a simple structure and is convenient to control, and controls the automatic opening and closing of the door body of the refrigerator through the gear and rack mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0016] The hovering door assembly will be described in detail below in combination with specific embodiments and drawings, which are not necessarily drawn to scale for the purpose of showing details and facilitating the understanding of the principles, and similar reference numerals can be used to describe similar components in different views. The drawings generally show the embodiments discussed herein in an exemplary and non-limiting manner. Among them:

[0017] Figure 1 is a schematic view of a refrigerator.

[0018] Figure 2 is Figure 1 is an enlarged schematic view of A of

[0019] Figure 3 is a schematic view of the door body separated from the refrigerator.

[0020] Figure 4 is an enlarged schematic view of B of Figure 3

[0021] Figure 5 is a schematic view of the refrigerator with the door body removed.

[0022] Figure 6 is an enlarged schematic view of C of Figure 5

[0023] Figure 7 is an exploded schematic view of Figure 6

[0024] Figure 8 is a cross-sectional schematic view of the hovering door assembly.​​​

[0025] In the diagram, 1. Refrigerator; 2. Door frame; 3. Door body; 4. Shaft; 5. Ratchet; 6. Pad; 7. Drive component; 8. Spring; 9. Stop plate; 10. Receiving groove; 11. Gear; 12. Rack; 13. Telescopic device; 14. Outer shell; 15. Fixing component. Detailed Implementation

[0026] The following are specific embodiments of this utility model, and the technical solution of this utility model will be further described with reference to the accompanying drawings. However, this utility model is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of features described in the embodiments are not necessarily necessary for the solution of the utility model.

[0027] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example

[0029] Smart refrigerators are a significant trend in the home appliance industry, bringing users a more convenient, intelligent, and healthy living experience. With continuous technological advancements and market expansion, smart refrigerators are poised to play an even more important role in the future, with features such as automatic door stopping and automatic door opening / closing being key directions for future development.

[0030] like Figure 1 , 2 As shown in Figures 3 and 4, the hovering door assembly of this embodiment is applied to the door of refrigerator 1 to enable the door of refrigerator 1 to hover after opening. The hovering door assembly includes a fixing member 15 for connecting the door frame 2 and a rotating shaft 4 for connecting the door body 3. The rotating shaft 4 and the fixing member 15 are rotatably connected by a ratchet wheel 5 and a pawl 6 intermittent motion mechanism. The pawl 6 is controlled by a telescopic mechanism to extend and retract relative to the ratchet wheel 5, thereby causing the pawl 6 to engage or disengage from the ratchet wheel 5, thus allowing the door body 3 to rotate or engage relative to the door frame 2. Under the action of the ratchet wheel 5 mechanism, the door body 3 can open freely without resistance, but after the door is opened, it cannot rotate freely to close. This achieves the door hovering. When it is necessary to close the door, the telescopic mechanism causes the pawl 6 to disengage from the ratchet wheel 5, allowing the ratchet wheel 5 to rotate freely, thereby closing the door body 3.

[0031] The ratchet wheel 5 is fixedly connected with the rotating shaft 4, the telescopic mechanism is arranged on the fixing member 15, the telescopic mechanism comprises a telescopic member and a driving member 7 for controlling the telescopic member to telescopically extend along the ratchet wheel 5, and the pawl 6 is arranged on the telescopic member. The telescopic member is driven by the driving member 7 to telescopically extend relative to the ratchet teeth of the ratchet wheel 5, so that the pawl 6 is clamped on or away from the ratchet teeth, thereby achieving clamping or releasing of the ratchet wheel 5, and achieving control on the rotation of the door body 3.

[0032] As shown in Figure 5 、 6 , 7, 8, the driving member 7 can be various devices capable of controlling the telescopic member to telescopically extend, such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder and the like. In the embodiment, the driving member 7 is an electromagnet arranged below the fixing member 15. A magnetic field generated by the electromagnet attracts the pawl 6 towards the ratchet wheel 5. The pawl 6 is made of ferrous material, and the telescopic member is a cylindrical spring 8. The magnetic force generated by the electromagnet attracts the pawl 6 to move towards the ratchet teeth of the ratchet wheel 5 against the restoring force of the spring 8, so that the pawl 6 is clamped on the ratchet teeth of the ratchet wheel 5. When the magnetic field disappears, the restoring force of the spring 8 telescopically extends the pawl 6 along the radial direction towards the rotating shaft 4, so that the pawl 6 is away from the ratchet teeth of the ratchet wheel 5, and the door body 3 can freely rotate.

[0033] The ratchet wheel 5 is an internal ratchet wheel 11, that is, the internal teeth of the ratchet wheel 5 are arranged on the inner side of the gear ring. The telescopic mechanism further comprises a stop disc 9 coaxially arranged with the rotating shaft 4. The stop disc 9 is fixed relative to the fixing member 15. The stop disc 9 is provided with a radial telescopic hole. The spring 8 telescopically extends in the radial telescopic hole, so that the spring 8 can telescopically extend in the radial telescopic hole, thereby achieving radial telescopic control on the pawl 6. One end of the spring 8 is connected with the bottom end of the radial telescopic hole, and the other end of the spring 8 is connected with the pawl 6.

[0034] The pawl 6 is a block, that is, the pawl 6 is a block body, the radial telescopic hole end is provided with a containing groove 10 containing the block, the containing groove 10 is the same as the block profile, the reset force of the spring 8 pulls the block into the containing groove 10 so that the ratchet wheel 5 can rotate freely relative to the stop disc 9. Under the action of the magnetic field, the block overcomes the elastic force of the spring 8 so that a part of the block enters the ratchet teeth of the ratchet wheel 5 and the other part is clamped in the containing groove 10, thereby achieving clamping of the door body 3. When the electromagnet is de-energized and the magnetic field disappears, the reset pulling force of the spring 8 pulls the block back into the containing groove 10 so that the ratchet wheel 5 can rotate freely relative to the stop disc 9. The connection between the spring 8 and the block can be biased to one end of the block, so that when the magnetic field is generated, one end of the block protrudes out of the containing groove 10 and is clamped in the ratchet teeth, and the other end is clamped in the containing groove 10. In this way, the door body 3 cannot rotate towards the door frame 2 but can rotate away from the door frame 2, achieving one-way opening of the door body 3 and preventing free rotation, thereby avoiding automatic closing of the door body 3.

[0035] A control switch is further arranged on the door body 3, which controls the on-off of the current of the electromagnet. For example, the control switch can be a pressure switch or a pressure sensor arranged on the door handle. When the user needs to suspend the door body 3, the user applies pressure to the pressure switch on the door handle with the hand, and when the pressure is greater than or equal to the pressure sensing setting value on the door handle, the electromagnet is energized to generate a magnetic force to attract the block inside, the block is separated from the stop disc under the action of the magnetic force, the end of the block is clamped in the ratchet teeth of the ratchet wheel 5, and the block and the stop disc no longer form a complete disc but are misaligned, thereby limiting the rotation of the door body 3 and achieving suspension of the door body 3 of the refrigerator 1. When the user needs to unlock the suspension, the user only needs to apply pressure to the pressure switch on the door handle with the hand, and when the pressure is greater than or equal to the pressure sensing setting value on the door handle, the electromagnet is de-energized to lose the magnetic force, the block returns to the original state under the stretching action of the spring 8, the block and the stop disc return to a complete disc, and the door body 3 can rotate normally, thereby unlocking the suspension of the refrigerator 1.

[0036] A rotation control device is further arranged to control the rotation of the rotating shaft 4, thereby replacing the hand control of the rotation of the door body 3. When the refrigerator 1 is closed, a certain pressure needs to be applied to the door body 3 to enable the door closer to effectively cooperate with the hinge. If the pressure is too small, the door closer and the hinge may not be normally matched, which may cause the refrigerator 1 to leak cold. In addition, as the number of opening and closing of the door body 3 of the refrigerator 1 increases, the door closer is gradually worn and torn, which may cause the door closer and the hinge to fail to cooperate, thereby causing the door body 3 to be not tightly closed, and affecting the normal use of the refrigerator 1. Therefore, the opening and closing of the door body 3 controlled by the rotation control device is not affected by the wear and tear of the door closer.

[0037] The rotation control device comprises a gear 11 coaxially arranged outside the rotation shaft 4 and a rack 12 engaged with the gear 11, the movement of the rack 12 is controlled by a telescopic device 13, and the action device can be a controllable telescopic device 13 such as a pneumatic cylinder or an electric telescopic cylinder. The telescopic device 13 controls the telescopic movement of the rack 12, thereby controlling the rotation of the gear 11, and then driving the rotation of the door body 3.

[0038] The rotation shaft 4 comprises a cylindrical shell 14 fixedly connected with the door body 3, the gear 11 is arranged on the outer wall of the shell 14, and the ratchet teeth of the ratchet wheel 5 are arranged on the inner wall of the shell 14, so that the hovering or rotation of the door body 3 can be controlled by controlling the rotation of the shell 14, and the structure is simple and the control is convenient.

[0039] The refrigerator 1 can be installed with a voice module to control the operation of the telescopic device 13 by voice. When the refrigerator 1 receives a voice instruction to open the door, the telescopic device 13 moves to drive the driving rack 12 to move in a single direction, and at the same time, the driving rack 12 drives the door closer to rotate, realizing the opening of the door body 3 of the refrigerator 1. When the refrigerator 1 receives a voice instruction to close the door, the telescopic device 13 moves in the opposite direction, and the driving rack 12 drives the door closer to rotate in the opposite direction, realizing the closing of the door body 3 of the refrigerator 1.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0041] Although some terms are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application. The order of actions, steps, etc. in the devices and methods shown in the specification and drawings can be implemented in any order as long as there is no specific order limitation and the output of the previous processing is not used in the subsequent processing. The use of similar ordinal terms (for example, "first", "then", "second", "again", "then" and the like) for the convenience of description does not mean that they must be implemented in such an order.

[0042] It will be understood by those within the art that, in this application, relative terms are intended to encompass different orientations of the device. For example, if a device is oriented vertically, terms such as "above" or "below" or "on" or "under" or "upper" or "lower" or the like can merely be used herein to indicate a spatial relationship for the purposes of this description without necessarily implying any particular orientation of the device. The application can also be implemented in computer languages including, for example, Ada, APL, Assembly, BASIC, C, C++, COBOL, D, Eiffel, FORTH, Fortran, Java, Modula-2, Pascal, Prolog, Python, REXX, RPG, Ruby, Smalltalk, Simula and / or Visual Basic. The application can be implemented as a routine embedded in a microprocessor or microcontroller or other hardware device, as a computer program running on a stand-alone device or networked device or as a routine running in a networked environment. The application can be implemented in a distributed manner or on different hardware devices.

[0043] Spatially relative terms, such as "under", "above", "between", "lower", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device shown in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0044] In addition, some terms can be used interchangeably with other terms, such as "substantially", "approximately", "about", "generally", and / or the like. Also, the use of "including", "comprising", "having" and / or "containing", and / or the like are used herein to mean that other components, integers, steps, or elements can be added to those specifically recited to achieve an analogous result.

Claims

1. A swing door assembly comprising a stationary member for attachment to a door frame and a rotating shaft for attachment to a door body, characterized in that, The rotation shaft is connected with the fixing member through a ratchet and pawl intermittent movement mechanism, the pawl is controlled to extend and retract relative to the ratchet through the extension and retraction mechanism, so that the pawl is engaged or released from the ratchet.

2. The overhang door assembly of claim 1, wherein, The ratchet is fixedly connected with the rotation shaft, the extension and retraction mechanism is arranged on the fixing member, the extension and retraction mechanism comprises an extension and retraction member and a driving member for controlling the extension and retraction member to extend and retract along the radial direction of the ratchet, and the pawl is arranged on the extension and retraction member.

3. The overhang door assembly of claim 2, wherein, The driving member is an electromagnet, the pawl is made of iron, and the extension and retraction member is a spring.

4. The overhang door assembly of claim 3, wherein, The ratchet is an internal tooth ratchet, the extension and retraction mechanism further comprises a stop disc coaxially arranged with the rotation shaft, the stop disc is fixed relative to the fixing member, the stop disc is provided with a radial extension and retraction hole, the spring is arranged in the radial extension and retraction hole, one end of the spring is connected with the bottom end of the radial extension and retraction hole, and the other end of the spring is connected with the pawl.

5. The overhang door assembly of claim 4, wherein, The pawl is a clamping block, the end of the radial extension and retraction hole is provided with a containing groove for containing the clamping block, and the reset force of the spring pulls the clamping block into the containing groove, so that the ratchet can freely rotate relative to the stop disc.

6. The overhang door assembly of claim 3, wherein, A control switch arranged on the door body is further included, and the control switch controls the on-off of the current of the electromagnet.

7. The overhang door assembly of claim 1, wherein, A rotation control device for controlling the rotation of the rotation shaft is further included.

8. The overhang door assembly of claim 7, wherein, The rotation control device comprises a gear coaxially arranged outside the rotation shaft and a rack engaged with the gear, and the rack is controlled to move by an extension and retraction device.

9. The overhang door assembly of claim 8, wherein, The rotation shaft comprises a cylindrical shell, the gear is arranged on the outer side wall of the shell, and the ratchet teeth of the ratchet are arranged on the inner side wall of the shell.

10. A refrigerator characterized by The hovering door assembly comprises the hovering door assembly according to any one of claims 1 to 9.

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