EP4592483A1

EP4592483A1 - Door hinge assembly and door-in-door refrigerator body

Info

Publication number: EP4592483A1
Application number: EP23870647.7A
Authority: EP
Inventors: Jia OUYANG; Hao Zhang
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-09-26
Filing date: 2023-09-22
Publication date: 2025-07-30
Also published as: WO2024067416A1; EP4592483A4

Abstract

A door hinge assembly, comprising a first gear (101), a second gear (102), and a snap-fit assembly (5). The first gear (101) is arranged on a primary door (6) by means of a first hinge plate (3); the second gear (102) is engaged with the first gear (101), and the second gear (102) is arranged on the primary door (6); the snap-fit assembly (5) is arranged on a secondary door (7), and the snap-fit assembly (5) is connected to the second gear (102) by means of a second hinge plate (4). When the primary door (6) is open, the first gear (101) is in a snap-fit state, so that the secondary door (7) moves in synchronization with the primary door (6). Also provided is a door-in-door refrigerator body. When a primary door is open, a secondary door can be automatically locked, and when the primary door is closed, the secondary door can be automatically unlocked, so that the problem of inconvenience for users to access items is solved, and the use experience of users is improved.

Description

This application claims priority to Chinese Patent Application No. 202211173463.9, filed on September 26, 2022 , Chinese Patent Application No. 202211173520.3, filed on September 26, 2022 , Chinese Patent Application No. 202211173444.6, filed on September 26, 2022 , and Chinese Patent Application No. 202211174339.4, filed on September 26, 2022 . The contents of which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of storage devices, and more particularly to a door hinge assembly and a door-in-door cabinet.

BACKGROUND

With rising living standards, user's demand for capacity requirements, energy saving, and preservation of refrigerators is gradually improving. At present, most refrigerators are single-door or door-to-door refrigerators, and the capacity of the refrigerator is limited. When the refrigerator door is opened, lots of cold air is lost, resulting in low efficiency of the refrigerator, thus a door-in-door refrigerator emerges. The door-in-door refrigerator has a main door for opening or closing the cabinet, and a secondary door for opening or closing an opening of the main door. When the user only needs to access items through the opening of the main door, they can only open the secondary door, thus avoiding leakage of cold capacity.
In order to prevent the secondary door from being opened while opening the main door by the user, the conventional door-in-door refrigerator is provided a door lock on the secondary door, the secondary door is locked on the main door so that the secondary door can move together following the main door to prevent the secondary door from being opened while opening the main door by the user.
During the implementation of the embodiment of the present disclosure, at least the following problems have been found in the related arts:
For the above door-in-door refrigerator provided with the door lock on the secondary door, when the user opens the secondary door, it is necessary to unlock the secondary door before opening the secondary door. If the user is holding other items in their hands, it is very inconvenient to operate, reducing the user's experience.

SUMMARY

A brief summary is given below to give a basic understanding of some aspects of the disclosed embodiments. The summary is not intended to be a general comment to identify crucial/essential constituent elements or to describe the protection scope of these embodiments but rather to serve as a preface to the detailed description that follows.
The embodiment of the present disclosure is provided with a door body hinge assembly and a door-in-door cabinet. When the main door is opened, the secondary door is locked automatically. When the main door is closed, the secondary door is unlocked automatically, solving the problem of inconvenient access to items of the user, and improving the user's experience.
A door body hinge assembly is provided by the embodiment of the present disclosure, and comprises a first gear, a second gear, and a snap assembly. The first gear is disposed on the main door by a first hinge plate. The second gear is engaged with the first gear and disposed on the main door. The snap assembly is disposed on the secondary door, and the snap assembly is connected to the second gear by a second hinge plate. When the main door is opened, the first gear is engaged with the second gear, the second gear drives the second hinge plate to raise, and the snap assembly is in a snapped state to drive the secondary door and the main door to move synchronously.
In some embodiments, the second hinge plate comprises a connecting rod. The connecting rod connects the second hinge plate and the second gear, and the connecting rod is configured to be a raisable and lowerable structure. When the main door is opened, the first gear drives the second gear to rotate, to raise the connecting rod, and to drive the second hinge plate to raise, so that the snap assembly is in a snapped state.
In some embodiments, the connecting rod comprises a first cylindrical cam and a second cylindrical cam. The first cylindrical cam is fixedly connected to a shaft of the second gear. The second cylindrical cam is fixedly connected to the second hinge plate and abutted against the first cylindrical cam. The second gear is configured to drive the first cylindrical cam to rotate so that the first cylindrical cam jacks up the second cylindrical cam and the second hinge plate.
In some embodiments, the snap assembly comprises a secondary door shaft sleeve and a snap rod. The secondary door shaft sleeve is fixedly disposed on the secondary door. The snap rod is inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate. When the second gear rotates, the snap rod is driven to raise and snap into the secondary door shaft sleeve.
In some embodiments, the connecting rod further comprises an elastic member. The elastic member is configured to tension the first cylindrical cam and the second cylindrical cam so that the first cylindrical cam and the second cylindrical cam are abutting against each other.
A door-in-door cabinet is further provided by the embodiment of the present disclosure, comprises a cabinet body and a door body disposed on an opening of the cabinet body, and further comprises the above door body hinge assembly.
In some embodiments, the door body comprises a main door and a secondary door. The first gear and the second gear are rotatably disposed on a pivot side surface of the main door. The secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door. When the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
In some embodiments, the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
In some embodiments, a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that, when the main door drives the second gear to move, the first gear rotates relatively to the main door, and drives the second gear to rotate.
In some embodiments, the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve. The shaft of the first gear is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly is provided by the embodiment of the present disclosure, and comprises a first gear, a second gear, a connecting rod, and a snap assembly. The first gear is disposed on the main door; The second gear is engaged with the first gear and disposed on a main door. The connecting rod connects the second hinge plate and the second gear, and the connecting rod is configured to be a raisable and lowerable structure. The snap assembly is disposed on a secondary door, and the snap assembly is connected to the connecting rod by the second hinge plate. The connecting rod is provided with a cam, and, when the main door is opened, the cam drives the second hinge plate to raise, so that the snap assembly is in a snapped state, and the secondary door and the main door move synchronously.
In some embodiments, the connecting rod comprises a first cylindrical cam and a second cylindrical cam. The first cylindrical cam comprises a first inclined section surface. The second cylindrical cam comprises a second inclined section surface. When the main door is closed, the first inclined section surface is complementarily attached to the second inclined section surface.
In some embodiments, the connecting rod comprises an outer side surface facing the secondary door, and an inner side surface opposite to the outer side surface. When the main door is closed, the first inclined section surface is complementarily attached to the second inclined section surface with a lowest joint on the inner side surface.
In some embodiments, the snap assembly comprises a secondary door shaft sleeve and a snap rod. The secondary door shaft sleeve is fixedly disposed on the secondary door. The snap rod is inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate. When the first cylindrical cam jacks up the second cylindrical cam, and the snap rod is driven to raise and snap into the secondary door shaft sleeve by the second hinge plate.
In some embodiments, a bottom end of the secondary door shaft sleeve is provided with a snap slot. The snap rod snap slot is provided with a snap protrusion located corresponding to the snap slot. The second cylindrical cam drives the snap rod to raise by the second hinge plate, the snap protrusion is embedded into the snap slot, so that the snap assembly is in the snapped state.
A door-in-door cabinet is provided by the embodiment of the present disclosure, comprises a cabinet body and a door body disposed on an opening of the cabinet body, and further comprises the above door body hinge assembly.
In some embodiments, the door body comprises a main door and a secondary door. The first gear and the second gear are rotatably disposed on a pivot side surface of the main door. The secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door. When the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
In some embodiments, the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
In some embodiments, a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that, when the main door drives the second gear to move, the first gear rotates relatively to the main door and drives the second gear to rotate.
In some embodiments, the pivot side surface of the main door is provided with the first shaft sleeve and the second shaft sleeve. The shaft of the first gear is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly is provided by the embodiment of the present disclosure, and comprises a transmission assembly, a connecting rod, a secondary door shaft sleeve, and a snap rod. The transmission assembly is disposed on the main door by the first hinge plate. The connecting rod connects the second hinge plate and the transmission assembly, and the connecting rod is configured to be a raisable and lowerable structure. The secondary door shaft sleeve is fixedly disposed on the secondary door. The snap rod is inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate. When the main door is opened, the transmission assembly drives the second hinge plate to raise by the connecting rod, to drive the snap rod to raise and snap into the secondary door shaft sleeve, so that the secondary door and the main door move synchronously.
In some embodiments, a bottom end of the secondary door shaft sleeve is provided with a snap slot. The snap rod is provided with a snap protrusion located corresponding to the snap slot. The connecting rod drives the snap rod to raise by the second hinge plate, and the snap protrusion is embedded into the snap slot, so that the snap rod is snapped into the secondary door shaft sleeve.
In some embodiments, when the main door is closed, an upper top surface of the snap protrusion is flush with a lower bottom surface of the snap slot.
In some embodiments, the snap slot is in a vertical straight-line shape.
In some embodiments, a length of the snap slot is greater than or equal to a preset length.
In some embodiments, the transmission assembly comprises a first gear and a second gear. The first gear is disposed on the main door; The second gear is engaged with the first gear and disposed on the main door. The connecting rod is fixedly connected to the second gear, the first gear is configured to drive the second gear to rotate, to drive the connecting rod to raise.
In some embodiments, the connecting rod comprises a first cylindrical cam and a second cylindrical cam. The first cylindrical cam is fixedly connected to a shaft of the second gear. The second cylindrical cam is fixedly connected to the second hinge plate and abuts against the first cylindrical cam. The second gear is configured to drive the first cylindrical cam to rotate so that the first cylindrical cam jacks up the second cylindrical cam and the second hinge plate.
A door-in-door cabinet is provided by the embodiment of the present disclosure, comprises a cabinet body and a door body disposed on an opening of the cabinet body, and further comprises the above door body hinge assembly.
In some embodiments, the door body comprises the main door and the secondary door. The first gear and the second gear are rotatably disposed on a pivot side surface of the main door. The secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door. When the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
In some embodiments, the first hinge plate is provided with a shaft hole, and a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that when the main door drives the second gear to move, the first gear rotates relatively to the main door, to drive the second gear to rotate.
In some embodiments, the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve. The shaft of the first gear is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly is provided by the embodiment of the present disclosure, and comprises a first cylindrical cam, a second cylindrical cam, a secondary door shaft sleeve, and a snap rod. The first cylindrical cam is rotatably disposed on a main door. The second cylindrical cam is abutted against the first cylindrical cam and fixedly connected to a second hinge plate. The secondary door shaft sleeve is fixedly disposed on the secondary door, and a bottom of the secondary door shaft sleeve is provided with a snap slot. The snap rod is inserted into the secondary door shaft sleeve, a first end of the snap rod is fixedly connected to the second hinge plate, and a second end of the snap rod is provided with the snap protrusion located corresponding to the snap slot. When the main door is closed, the first cylindrical cam and the second cylindrical cam are in a completely abutting state, and the snap protrusion and the snap slot are in a disengaged state, so that the secondary door moves independently; when the main door rotates, the first cylindrical cam rotates relatively to the second cylindrical cam to jack up the second cylindrical cam, and the snap rod is driven to raise, so that the snap protrusion is snapped into the snap slot, and the secondary door and the main door move synchronously.
In some embodiments, a length of the snap slot is greater than or equal to a maximum jacked height of the second cylindrical cam by the first cylindrical cam.
In some embodiments, a bottom end of the secondary door shaft sleeve is provided with two sets of snap slots. The snap rod is provided with two sets of snap protrusions located corresponding to the two sets of snap slots.
In some embodiments, the length of the snap protrusion is equal to the length of the snap slot.
In some embodiments, the above door body hinge assembly further comprises a transmission assembly. The transmission assembly is disposed on the main door by a first hinge plate. The first cylindrical cam is fixedly connected to the transmission assembly so that the transmission assembly drives the first cylindrical cam to rotate.
In some embodiments, the transmission assembly comprises a first gear and a second gear. The first gear is disposed on the main door; The second gear is engaged with the first gear, and is disposed on the main door. The first cylindrical cam is fixedly connected to the second gear, and the first cylindrical cam is configured to drive the second gear to rotate, so that the first cylindrical cam is driven to rotate and jacks up the second cylindrical cam.
A door-in-door cabinet is provided by the embodiment of the present disclosure, comprises a cabinet body and a door body disposed on an opening of the cabinet body, and further comprises the above door body hinge assembly.
In some embodiments, the door body comprises a main door and a secondary door. The first gear and the second gear are rotatably disposed on a pivot side surface of the main door. The secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door. When the main door is opened, the first gear drives the second gear to rotate, the first cylindrical cam jacks up the second hinge plate, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
In some embodiments, the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
In some embodiments, a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that when the main door drives the second gear to move, the first gear rotates relatively to the main door, and drives the second gear to rotate.
In some embodiments, the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve. The shaft of the first gear is rotatably disposed inside the first shaft sleeve, and a shaft of the second gear is rotatably disposed inside the second shaft sleeve.
The door body hinge assembly and the door-in-door cabinet are provided by the embodiment of the present disclosure, and have the following technical proposals:
The door body hinge assembly comprises a first gear, a second gear, and a snap assembly. The first gear is disposed on a main door by a first hinge plate. The second gear is engaged with the first gear, and the second gear is disposed on the main door. The snap assembly is disposed on a secondary door, and the snap assembly is connected to the second gear by a second hinge plate. When the main door is opened, the first gear is engaged with the second gear, the second gear drives the second hinge plate to raise, and the snap assembly is in a snapped state to drive the secondary door and the main door to move synchronously. Thus, when the user opens the main door, the secondary door is locked on the main door automatically and moves with the main door synchronously, when the main door is closed, the secondary door is unlocked automatically, so as to utilize more convenient for the user and improving the user's experience.
The door body hinge assembly comprises a first gear, a second gear, a connecting rod, and a snap assembly. The first gear is disposed on a main door; The second gear is engaged with the first gear and disposed on the main door. A second hinge plate is connected to the second gear by a raisable and lowerable connecting rod. The snap assembly is disposed on a secondary door, and the snap assembly is connected to the connecting rod by the second hinge plate. The connecting rod is provided with a cam, when the main door is opened, the cam drives the second hinge plate to raise, so that the snap assembly is in a snapped state, and the secondary door and the main door move synchronously. Thus, when the user opens the main door, the secondary door is locked on the main door automatically and moves with the main door synchronously, when the main door is closed, the secondary door is unlocked automatically, so as to utilize more convenient for the user and improving the user's experience.
The door body hinge assembly comprises a transmission assembly, a connecting rod, a secondary door shaft sleeve, and a snap rod. The transmission assembly is disposed on the main door by a first hinge plate. The connecting rod connects a second hinge plate and the transmission assembly, and the connecting rod is configured to be a raisable and lowerable structure. The secondary door shaft sleeve is fixedly disposed on the secondary door. The snap rod is inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate. When the main door is opened, the transmission assembly drives the second hinge plate to raise by the connecting rod, to drive the snap rod to raise and snap into the secondary door shaft sleeve, so that the secondary door and the main door move synchronously. Thus, when the user opens the main door, the secondary door is locked on the main door automatically and moves with the main door synchronously, when the main door is closed, the secondary door is unlocked automatically, so as to utilize more convenient for the user and improving the user's experience.
The door body hinge assembly comprises a first cylindrical cam, a second cylindrical cam, a secondary door shaft sleeve, and a snap rod. The first cylindrical cam is rotatably disposed on a main door; The second cylindrical cam is abutted against the first cylindrical cam and is fixedly connected to a second hinge plate. A secondary door shaft sleeve is fixedly disposed on the secondary door, and a bottom of the secondary door shaft sleeve is provided with a snap slot. The snap-fit is inserted into the secondary door shaft sleeve. A first end of the snap rod is fixedly connected to the second hinge plate, and a second end of the snap rod is provided with a snap protrusion located corresponding to the snap slot. When the main door is closed, the first cylindrical cam and the second cylindrical cam are in a completely abutting state, and the snap protrusion and the snap slot are in a disengaged state, so that the secondary door moves independently; when the main door rotates, the first cylindrical cam rotates relatively to the second cylindrical cam to jack up the second cylindrical cam, and the snap rod is driven to raise, so that the snap protrusion is snapped into the snap slot, and the secondary door and the main door move synchronously. Thus, when the user opens the main door, the secondary door is locked on the main door automatically and moves with the main door synchronously, when the main door is closed, the secondary door is unlocked automatically, so as to utilize more convenient for the user and improving the user's experience.
The above general description and the description below are exemplary and explanatory only and are not intended to limit the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are illustrated by means of the corresponding drawings, which do not constitute a limitation of the embodiments, elements having the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a limitation of proportion, where:

Fig. 1 is a schematic structure diagram of the door body hinge assembly provided by the embodiment of the present disclosure;
Fig. 2 is a front view of the door body hinge assembly provided by the embodiment of the present disclosure;
Fig. 3 is a schematic structure diagram of the connecting rod or the second cylindrical cam in a lowering provided by the embodiment of the present disclosure;
Fig. 4 is a schematic structure diagram of the connecting rod or the first cylindrical cam in a raising provided by the embodiment of the present disclosure;
Fig. 5 is a schematic structure diagram of the snap assembly in a disengaged provided by the embodiment of the present disclosure;
Fig. 6 is a schematic structure diagram of the snap assembly in a snapped provided by the embodiment of the present disclosure;
Fig. 7 is a schematic structure diagram of the door-in-door cabinet provided by the embodiment of the present disclosure;
Fig. 8 is a sectional view of the part of the door-in-door cabinet provided by the embodiment of the present disclosure.

REFERENCES IN THE DRAWINGS:

1: transmission assembly; 101: first gear; 102: second gear; 2: connecting rod; 201: first cylindrical cam; 202: second cylindrical cam; 203: elastic member; 3: first hinge plate; 4: second hinge plate; 501: snap rod; 5011: snap protrusion; 502: secondary door shaft sleeve; 5021: snap slot; 6: main door; 7: secondary door; 8: cabinet body.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings, which are for illustration only and are not intended to limit the embodiments of the present disclosure. In the following technical description for the convenience of explanation, several details are provided for a full understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, the well-known structures and devices may simplify the disclosure in order to simplify the drawings.
The terms "first", "second" and the like in the specification and claims of embodiments of the present disclosure and the above drawings are used to distinguish similar elements and are not necessarily used to describe a particular order or priority. It should be understood that the data used in this way can be interchanged where appropriate for the embodiments of the present disclosure described herein. Furthermore, the terms "comprise" and "have" and any variations thereof are intended to cover a non-exclusive inclusion.
In embodiments of the present disclosure, directional or positional relationship indicated by terms such as "up", "down", "inside", "middle", "outside", "front" and "rear" is based on the directional or positional relationship shown in the figures. These terms are mainly intended to describe embodiments of the present disclosure, not to limit that the described devices, elements, or components must have a specific orientation or must be configured and operated in a specific orientation. Furthermore, in addition to indicating the directional or positional relationship, the above partial terms might also be used to convey other meanings, for example, the term "on" might also be used to indicate a dependency relationship or connectional relationship in some cases. Those having ordinary skills in the art may understand specific meanings of these terms in the embodiments of the present disclosure according to specific situations.
In addition, the terms "dispose", "connect" and "fix" should be understood in a broad sense. For example, "connect" may be a fixed connection, detachable connection, or integral connection, may be a mechanical connection or electrical connection, may be a direct connection, or an indirect connection through an intermediate medium, or may be internal communication between two devices, elements, or components. Those having ordinary skills in the art may understand specific meanings of the above terms in the embodiments of the present disclosure according to specific situations.
Unless otherwise illustrated, the term "a plurality of" means two or more.
In the embodiment of the present disclosure, the character "/" indicates that the front element and rear element are in an "or" relationship. For example, A/B illustrates A or B.
The term "and/or" is an association relationship that describes elements, indicating that there can be three relationships. For example, A and/or B represent relationships: A or B, or A and B.
Embodiments of the present disclosure and features in the embodiments may be combined with one another without conflict.
The conventional door-in-door cabinet, such as a refrigerator with a door-in-door cabinet, in order to conveniently utilize for the user and reduce the energy consumption of the refrigerator, the refrigerator door body comprises a main door and a secondary door. The main door is for opening or closing an opening of the cabinet body, the main door is further provided with an opening, and the secondary door is for opening or closing the opening of the main door. When items can be accessed through the opening of the main door, only to open the secondary door without opening the main door. To ensure the secondary door isn't opened automatically when the main door is opened, the secondary door is provided with a door lock to lock the secondary door on the main door.
However, when the user utilizes the door-in-door refrigerator with the secondary door provided with the door lock, the secondary door should be manually locked or unlocked, thus in, a case where the user is holding other items in their hands, it is very inconvenient to operate, reducing the user's experience. Furthermore, the secondary door should be designed thicker to accommodate the lock, reducing the overall aesthetics of the refrigerator.
As shown in Figs. 1 to 6, a door body hinge assembly is provided by the embodiment of the present disclosure, and comprises a first gear 101, a second gear 102, and a snap assembly 5. The first gear 101 is disposed on the main door 6 by the first hinge plate 3. The second gear 102 is engaged with the first gear 101, and the second gear 102 is disposed on the main door 6. The snap assembly 5 is disposed on a secondary door 7, and the snap assembly 5 is connected to the second gear 102 by a second hinge plate 4. When the main door 6 is opened, the first gear 101 is engaged with the second gear 102, the second gear 102 drives the second hinge plate 4 to raise, and the snap assembly 5 is in a snapped state to drive the secondary door 7 and the main door 6 to move synchronously.
Specifically, the first gear 101 and the second gear 102 are disposed on the main door 6, and the first gear 101 is engaged with the second gear 102. When the main door 6 rotates around the first gear 101 to open, the first gear 101 rotates relative to the main door 6 and the second gear 102 to drive the second gear 102 to rotate. A shaft of the second gear 102 is connected to the snap assembly 5 by the second hinge plate 4, when the second gear 102 rotates to drive the second-second hinge plate 4 to raise, so that the snap assembly 5 is in a snapped state to lock the secondary door 7 on the main door 6, thus when the user rotates the main door 6, the secondary door 7 rotates following the main door 6 synchronously. When the main door 6 rotates around the first gear 101 to close, the first gear 101 rotates relative to the main door 6 and the second gear 102 to drive the second gear 102 to rotate in a reverse direction. The shaft of the second gear 102 is connected to the snap assembly 5 by the second hinge plate 4, when the second gear 102 rotates in the reverse direction to drive the second hinge plate 4 to lower, the snap assembly 5 is in a disengaged state, to unlock the secondary door 7 with the main door 6, thus the secondary door 7 rotates independently. The secondary door 7 rotates synchronously with the main door 6. It should be understood that the snap assembly 5 is in the snapped state, the secondary door 7 is locked on the main door 6, and the secondary door 7 cannot rotate to open.
As shown in Figs. 1 and 2, in some embodiments, the second hinge plate 4 comprises a connecting rod 2. The connecting rod 2 connects the second hinge plate 4 and the second gear 102, and the connecting rod 2 is configured to be a raisable and lowerable structure. When the main door 6 is opened, the first gear 101 drives the second gear 102 to rotate, to raise the connecting rod 2, to drive the second hinge plate 4 to raise, so that the snap assembly 5 is in the snapped state.
Specifically, the second hinge plate 4 comprises a first end disposed the connecting rod 2 and a second end connecting the snap assembly 5, where the first end is disposed opposite to the second end. The shaft of the second gear 102 is connected to the connecting rod 2, when the first gear 101 rotates in a forward direction, to drive the second gear 102 to rotate in the reverse direction, to raise the connecting rod 2, and the second hinge plate 4 is driven to raise, so that the snap assembly 5 is in the snapped state. When the first gear 101 rotates in the reverse direction, to drive the second gear 102 to rotate in the forward direction, to lower the connecting rod 2, and the connecting rod 2 is driven to lower, so that the snap assembly 5 is in the disengaged state.
It should be understood that the first gear 101 rotates in the forward direction could be clockwise or counterclockwise, adapting according to the direction in which the main door 6 is opened.
As shown in Fig. 2, in some embodiments, the connecting rod 2 comprises a first cylindrical cam 201 and a second cylindrical cam 202. The first cylindrical cam 201 is fixedly connected to the shaft of the second gear 102. The second cylindrical cam 202 is fixedly connected to the second hinge plate 4 and abutted against the first cylindrical cam 201. The second gear 102 is configured to drive the first cylindrical cam 201 to rotate so that the first cylindrical cam 201 jacks up the second cylindrical cam 202 and the second hinge plate 4.
Specifically, the first cylindrical cam 201 is fixedly connected to the shaft of the second gear 102, and the second cylindrical cam 202 is fixedly connected to the second hinge plate 4, and abutted against the first cylindrical cam 201. When the first cylindrical cam 101 drives the second gear 102 to rotate, the first cylindrical cam 201 rotates synchronously with the second gear 102. Thus, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, so that the first cylindrical cam 201 jacks up the second cylindrical cam 202, and the second hinge plate 4 fixed to the second cylindrical cam 202 is jacked up.
As shown in Fig. 3, in some embodiments, the first cylindrical cam 201 comprises a first inclined section surface. The second cylindrical cam 202 comprises a second inclined section surface. When the main door 6 is closed, the first inclined section surface is complementarily attached to the second inclined section surface.
Specifically, when the main door 6 is closed, the first inclined section surface is complementarily attached to the second inclined section surface, simultaneously, the contact area of the first inclined section surface and the second inclined section surface is maximum, as shown in Fig. 3. When the main door 6 is opened, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, so that the first inclined section surface jacks up the second inclined section surface, simultaneously, the contact area between the first inclined section surface and the second inclined section surface is reduced to minimum, as shown in Fig. 4.
As shown in Fig. 3, in some embodiments, the connecting rod 2 comprises an outer side surface facing the secondary door 7 and an inner side surface opposite to the outer side surface. When the main door 6 is closed, the first inclined section surface is complementarily attached to the second inclined section surface with a lowest joint on the inner side surface.
Specifically, when the main door 6 is closed, a lowest point of the first inclined section surface is disposed in the inner side surface and a lowest point of the second inclined section surface is disposed in the inner side surface, as shown in Fig. 3. When the main door 6 is opened, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, the lowest point of the first inclined section surface rotates to the outer side surface, and a highest point of the first inclined section surface rotates to the inner side surface, simultaneously, the highest point of the first inclined section surface abuts against the lowest point of the second inclined section surface, so that the second cylindrical cam 202 is jacked up, as shown in Fig. 4.
As shown in Figs. 1 to 6, another door body hinge assembly is provided by the embodiment of the present disclosure, and comprises the first gear 101, the second gear 102, the connecting rod 2, and the snap assembly 5. The first gear 101 is disposed on the main door 6. The second gear 102 is engaged with the first gear 101, and the second gear 102 is disposed on the main door 6. The connecting rod 2 connects the second hinge plate 4 and the second gear 102, and the connecting rod 2 is configured to be a raisable and lowerable structure. The snap assembly 5 is disposed on the secondary door 7, and the snap assembly 5 is connected to the connecting rod 2 by the second hinge plate 4. The connecting rod 2 is provided with a cam, and when the main door is opened, the cam drives the second hinge plate 4 to raise, so that the snap assembly 5 is in the snapped state, and the secondary door 7 and the main door 6 move synchronously.
The first gear 101 and the second gear 102 are disposed on the main door 6, and the first gear 101 is engaged with the second gear 102. When the main door 6 rotates around the first gear 101, the first gear 101 rotates relative to the main door 6 and the second gear 102, to drive the second gear 102 to rotate. The shaft of the second gear 102 is connected to the connecting rod 2, and when the second gear 102 rotates, the connecting rod 2 is driven to raise or lower. When the main door 6 is opened, the second gear 102 rotates and drives the second hinge plate 4 to raise by the connecting rod 2, so that the snap assembly 5 is in the snapped state, and the secondary door 7 is locked on the main door 6, so that when the user opens the main door 6, the secondary door 7 rotates following the main door 6 synchronously. The secondary door 7 rotates following the main door 6 synchronously, it should be understood that the snap assembly 5 is in the snapped state, the secondary door 7 is locked on the main door 6, and the secondary door 7 cannot rotate to open. When the main door 6 is closed, the second gear 102 rotates in the reverse direction to drive the second hinge plate 4 2 to lower by the connecting rod, so that the snap assembly 5 is in the disengaged state, and the secondary door 7 is unlocked with the main door 6, thus the secondary door 7 rotates independently.
It should be understood that the first gear 101 rotates in the forward direction could be clockwise or counterclockwise, adapting according to the direction the main door 6 is opened.
As shown in Fig. 3, in some embodiments, the connecting rod 2 comprises the first cylindrical cam 201 and the second cylindrical cam 202. The first cylindrical cam 201 comprises the first inclined section surface. The second cylindrical cam 202 comprises the second inclined section surface. When the main door 6 is closed, the first inclined section surface is complementarily attached to the second inclined section surface.
Specifically, the first cylindrical cam 201 is fixedly connected to the shaft of the second gear 102, and the second cylindrical cam 202 is fixedly connected to the second hinge plate 4 and abutted against the first cylindrical cam 201. When the first cylindrical cam 101 drives the second gear 102 to rotate, the first cylindrical cam 201 rotates synchronously with the second gear 102. Thus, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, so that the first cylindrical cam 201 jacks up the second cylindrical cam 202, and the second hinge plate 4 fixed to the second cylindrical cam 202 is jacked up.
It should be understood that when the main door 6 is closed, the first inclined section surface is complementarily attached to the second inclined section surface, simultaneously, the contact area of the first inclined section surface and the second inclined section surface is maximum, as shown in Fig. 3. When the main door 6 is opened, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, so that the first inclined section surface jacks up the second inclined section surface, simultaneously, the contact area of the first inclined section surface and the second inclined section surface is reduced to minimum, as shown in Fig. 4.
In some embodiments, the connecting rod comprises the outer side surface facing the secondary door, and the inner side surface opposite to the outer side surface. When the main door is closed, the first inclined section surface is complementarily attached to the second inclined section surface with a lowest joint on the inner side surface.
As shown in Figs. 1 to 6, another door body hinge assembly is provided by the embodiment of the present disclosure, and comprises the transmission assembly 1, the connecting rod 2, the secondary door shaft sleeve 502, and a snap rod 501. The transmission assembly 1 is disposed on the main door by the first hinge plate 3. The connecting rod 2 connects the second hinge plate 4 and the transmission assembly 1, and the connecting rod 2 is configured to be a raisable and lowerable structure. The secondary door shaft sleeve 502 is fixedly disposed on the secondary door 7. The snap rod 501 is inserted into the secondary door shaft sleeve 502 and fixedly connected to the second hinge plate 4. When the main door 6 is opened, the transmission assembly 1 drives the second hinge plate 4 to raise by the connecting rod 2, and drives the snap rod 501 to raise and snap in the secondary door shaft sleeve 502, so that the secondary door 7 and the main door 6 move synchronously.
Specifically, transmission assembly 1 is disposed on the main door by the first hinge plate 3 and connected to the second hinge plate 4 by the connecting rod 2. When the main door rotates around the transmission assembly 1 to drive transmission assembly 1 to move, and the connecting rod 2 is driven to raise and lower. One end of the snap rod 501 is inserted into the secondary door shaft sleeve 502, and the other end of the snap rod 501 is fixedly connected to the second hinge plate 4, so that, when transmission assembly 1 drives the snap rode 501 to raise or lower by the second hinge plate 4, the snap rod 501 is slidable inside the secondary door shaft sleeve 502 to snap into or disengage from the secondary door shaft sleeve 502. When the main door 6 is opened, the transmission assembly 1 moves and drives the second hinge plate 4 to raise by the connecting rod 2, and drives the snap rod 501 to raise and snap into the secondary door shaft sleeve 502, to lock the secondary door 7 on the main door 6. When the user rotates the main door 6, the secondary door 7 rotates following the main door 6 synchronously. The secondary door 7 rotates following the main door 6 synchronously, it should be understood that the snap rod 501 is snapped into the secondary door shaft sleeve 502, to lock the secondary door 7 on the main door 6, and the secondary door 7 cannot rotate to open. When the main door 6 is closed, the transmission assembly 1 is connected to the snap rod 501 by the second hinge plate 4, the transmission assembly 1 drives the second hinge plate 4 to lower, the snap rod 501 is disengaged from the secondary door shaft sleeve 502, and the secondary door 7 is unlocked with the main door 6, thus the secondary door 7 rotates independently.
In some embodiments, a bottom end of the secondary door shaft sleeve 502 is provided with a snap slot 5021. The snap rod 501 is provided with a snap protrusion 5011 located corresponding to the snap slot. The connecting rod 2 drives the snap rod 501 to raise by the second hinge plate 4, and the snap protrusion 5011 is embedded into the snap slot 5021, so that the snap rod 501 is snapped into the secondary door shaft sleeve 502.
Specifically, the transmission assembly 1 drives the connecting rod 2 to raise, and the second hinge plate 4 drives the snap rod 501 to slide up inside the secondary door shaft sleeve 502, so that the snap protrusion 5011 moves up and is embedded into the snap slot 5021, and the snap assembly 5 is in the snapped state, as shown in Fig. 6. Similarly, the first cylindrical cam 201 drives the second cylindrical cam 202 to lower, and the second hinge plate 4 drives the snap rod 501 to slide down inside the secondary door shaft sleeve 502, so that the snap protrusion 5011 moves down and disengages from the snap slot 5021, and the snap assembly 5 is in a disengaged state, as shown in Fig. 5.
In some embodiments, when the main door 6 is closed, an upper top surface of the snap protrusion 5011 is flush with a lower bottom surface of the snap slot 5021.
Specifically, when the main door 6 is closed, the upper top surface of the snap protrusion 5011 is flush with the lower bottom surface of the snap slot 5021. Thus, in a moment when the main door 6 is opened, the connecting rod 2 drives the snap rod 501 to raise and snap into the secondary door shaft sleeve 502.
In some embodiments, the snap slot 5021 is in a vertical straight-line shape.
It should be understood that the snap slot 5021 is designed in a vertical straight-line shape conducive to the snap protrusion 5011 snapped in the snap slot 5021.
In some embodiments, a length of the snap slot 5021 is greater than or equal to a preset length.
Specifically, the length of the snap slot 5021 is greater than or equal to 0.5 mm. For example, the length of the snap-fit 5021 slot is 1 mm, 1.5 mm, or 2 mm.
As shown in Fig. 1, in some embodiments, the transmission assembly 1 comprises the first gear 101 and the second gear 102. The first gear 101 is disposed on the main door 6. The second gear 102 is engaged with the first gear 101, and the second gear 102 is disposed on the main door 6. The connecting rod 2 is fixedly connected to the second gear 102, and the first gear 101 is configured to drive the second gear 102 to rotate, to drive the connecting rod 2 to raise.
Specifically, the shaft of the second gear 102 is connected to the connecting rod 2, when the first gear 101 rotates in the forward direction to drive the second gear 102 to rotate in the reverse direction, to drive the connecting rod 2 to raise, and to drive the second hinge plate 4 to raise, so that the snap rod 501 is snapped into the secondary door shaft sleeve 502. When the first gear 101 rotates in the reverse direction, to drive the second gear 102 to rotate in the forward direction, to drive the connecting rod 2 to lower, to drive the snap rod 501 to lower, so that the snap rod 501 is disengaged from the secondary door shaft sleeve 502.
As shown in Figs. 1 to 6, another door body hinge assembly is provided by the embodiment of the present disclosure, and comprises the first cylindrical cam 201, the second cylindrical cam 202, the secondary door shaft sleeve 502, and the snap rod 501. The first cylindrical cam 201 is rotatably disposed on the main door 7. The second cylindrical cam 202 is disposed against the first cylindrical cam 201 and fixedly connected to the second hinge plate 4. The secondary door shaft sleeve 502 is fixedly disposed on the secondary door 7, and the bottom of the secondary door shaft sleeve 502 is provided with the snap slot 5021. The snap rod 501 is inserted into the secondary door shaft sleeve 502, and the first end of the snap rod 501 is fixedly connected to the second hinge plate 4, the second end of the snap rod 501 is provided with the snap protrusion 5011 located corresponding to the snap slot 5021. When the main door 6 is closed, the first cylindrical cam 201 and the second cylindrical cam 202 are in a completely abutting state, and the snap protrusion 5011 and the snap slot 5021 are in a disengaged state, so that the secondary door 7 can move independently. When the main door 6 rotates, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202 to jack up the second cylindrical cam 202, and the snap-fit rod 501 is driven to raise, so that the snap protrusion 5011 is snapped into the snap slot 5021, and the secondary door 7 and the main door 6 move synchronously.
Specifically, the first cylindrical cam 201 is rotatably disposed on the main door 6, when the main door 6 rotates, the first cylindrical cam 201 is driven to rotate relatively to the second cylindrical cam 202, and the second hinge plate 4 drives the snap rod 501 slides up or down inside the secondary door shaft sleeve 502. When the main door 6 is opened, the first cylindrical cam 201 rotates relatively to the second cylindrical cam 202, and the second cylindrical cam 202 is jacked up. The second cylindrical cam 202 drives the snap rod 501 to raise by the second hinge plate 4, so that the snap protrusion 5011 is snapped into the snap slot 5021 of the secondary door shaft sleeve 502, and the secondary door 7 is locked on the main door 6. When the user opens the main door 6, the secondary door 7 rotates following the main door 6 synchronously. The secondary door 7 rotates synchronously with the main door 6. It should be understood that the snap assembly 5 is in the snapped state, the secondary door 7 is locked on the main door 6, and the secondary door 7 cannot rotate to open. When the main door 6 is closed, the first cylindrical cam 201 rotates in the reverse direction, and drives the second cylindrical cam 202 to lower. The second cylindrical cam 202 drives the snap rod 501 to lower by the second hinge plate 4, so that the snap protrusion 5011 is disengaged from the snap slot 5021 of the secondary door shaft sleeve 502, and the secondary door 7 can rotate independently.
In some embodiments, the length of the snap slot 5021 is greater than or equal to a maximum jacking height of the second cylindrical cam 202 by the first cylindrical cam 201.
Specifically, the maximum jacking height of the second cylindrical cam 202 by the first cylindrical cam 201 can be 4/5, 3/4, 2/3, or 1/2 of the length of the snap slot 5021. Thus, when the first cylindrical cam 201 completely jacks up the second cylindrical cam 202, the snap slot 5021 cannot interfere with the movement of the snap protrusion 5011.
It should be understood that if the length of the snap slot 5021 is less than the maximum jacking height of the second cylindrical cam 202 by the first cylindrical cam 201, when the first cylindrical cam 201 jacks up the second cylindrical cam 202, and when the second hinge plate 4 drives the snap rod 501 to raise, the snap slot 5021 can interfere with moving of the snap protrusion 5011, and limit the second cylindrical cam 202 from continuing raising.
In some embodiments, the bottom end of the secondary door shaft sleeve 502 is symmetrically provided with two sets of snap slots 5021. The snap rod 501 is provided with two sets of snap protrusions 5011 located corresponding to the two sets of snap slots 5021.
It should be understood that the secondary door shaft sleeve 502 and the snap rod 501 are provided correspondingly with the two sets of snap slots 5021 and the two sets of snap protrusions 5011 respectively, improving the stability of the snap assembly 5 in snapping.
In some embodiments, the length of the snap protrusion 5011 is equal to the length of the snap slot 5021.
In some embodiments, the above door body hinge assembly further comprises the transmission assembly 1. The transmission assembly 1 is disposed on the main door 6 by the first hinge plate 3. The first cylindrical cam 201 is fixedly connected to the transmission assembly 1, so that the transmission assembly 1 drives the first cylindrical cam 201 to rotate.
Specifically, the transmission assembly 1 is disposed on the main door 6 by the first hinge plate 3 and connected to the second hinge plate 4 by the first cylindrical cam 201 and the second cylindrical cam 202. When the main door rotates around the transmission assembly 1, the first cylindrical cam 201 is driven to rotate, and the second cylindrical cam 202 is driven to raise or lower.
As shown in Fig. 1, in some embodiments, the transmission assembly 1 comprises the first gear 101 and the second gear 102. The first gear 101 is disposed on the main door 6. The second gear 102 is engaged with the first gear 101, and the second gear 102 is disposed on the main door 6. The first cylindrical cam 201 is fixedly connected to the second gear 102, the gear 101 is configured to drive the second gear 102 to rotate, so that the first cylindrical cam 201 is driven to rotate and jacks up the second cylindrical cam 202.
Specifically, the shaft of the second gear 102 is connected to the first cylindrical cam 201, when the first gear 101 rotates in the forward direction to drive the second gear 102 to rotate in the reverse direction, to raise the second cylindrical cam 202, and the second hinge plate 4 is driven to raise, so that the snap rod 501 is snapped into the secondary door shaft sleeve 502. When the first gear 101 rotates in the reverse direction to drive the second gear 102 to rotate in the forward direction, to lower the second cylindrical cam 202, and the snap rod 501 is driven to lower, so that the snap rod 501 is disengaged from the secondary door shaft sleeve 502.
As shown in Figs. 5 and 6, in some embodiments, the snap assembly 5 comprises the secondary door shaft sleeve 502 and the snap rod 501. The secondary door shaft sleeve 502 is fixedly disposed on the secondary door 7. The snap rod 501 is inserted into the secondary door shaft sleeve 502, and fixedly connected to the second hinge plate 4. When the second gear 102 rotates, the snap rod 501 is driven to raise and snapped in the secondary door shaft sleeve 502.
Specifically, the secondary door shaft sleeve 502 is fixedly disposed on the secondary door 7. The snap rod 501 is inserted into the secondary door shaft sleeve 502, and is slidable up and down inside the secondary door shaft sleeve 502, to snap into or disengage from the secondary door shaft sleeve 502. The snap rod 501 is fixedly connected to the second hinge plate 4, the second gear 102 rotates, so that the first cylindrical cam 201 jacks up the second cylindrical cam 202 and the second hinge plate 4, the second hinge plate 4 drives the snap rod 501 slides up inside the secondary door shaft sleeve 502, so that the snap rod 501 is snapped into the secondary door shaft sleeve 502, as shown in Fig. 6. When the second gear 102 rotates in the reverse direction, to lower the second cylindrical cam 202 and the second hinge plate 4, and the second hinge plate 4 drives the snap rod 501 to slide down inside the secondary door shaft sleeve 502, so that the snap rod 501 is disengaged from the secondary door shaft sleeve 502, as shown in Fig. 5.
In some embodiments, the bottom end of the secondary door shaft sleeve 502 is provided with the snap slot 5021. The snap rod 501 is provided with the snap protrusion 5011 located corresponding to the snap slot 5021. The second cylindrical cam 202 drives the snap rod 501 to raise by the second hinge plate 4, the snap protrusion 5011 is embedded into the snap slot 5021, so that the snap assembly 5 is in the snapped state.
Specifically, the first cylindrical cam 201 jacks up the second cylindrical cam 202, and the second hinge plate 4 drives the snap rod 501 to slide up inside the secondary door shaft sleeve 502, so that the snap protrusion 5011 moves up and is inserted into the snap slot 5021, and the snap assembly 5 is in the snapped state, as shown in Fig. 6. Similarly, the first cylindrical cam 201 lower the second cylindrical cam 202, and the second hinge plate 4 drives the snap rod 501 to slide down inside the secondary door shaft sleeve 502, so that the snap protrusion 5011 moves down and disengages from the snap slot 5021, and the snap assembly 5 is in the disengaged state, as shown in Fig. 5.
In some embodiments, the length of the snap slot 5021 is greater than or equal to the maximum jacked height of the second cylindrical cam 202 by the first cylindrical cam 201.
Specifically, the maximum jacking height of the second cylindrical cam 202 by the first cylindrical cam 201 can be 4/5, 3/4, 2/3, or 1/2 of the length of the snap slot 5021. Thus, when the first cylindrical cam 201 completely jacks up the second cylindrical cam 202, the snap slot 5021 cannot interfere with the moving of the snap protrusion 5011.
It should be understood that if the length of the snap slot 5021 is less than the maximum jacking height of the second cylindrical cam 202 by the first cylindrical cam 201, when the first cylindrical cam 201 jacks up the second cylindrical cam 202, and the second hinge plate 4 drives the snap rod 501 to raise, the snap slot 5021 can interfere with moving of the snap protrusion 5011, and limit the second cylindrical cam 202 from continuing raising.
In some embodiments, the bottom end of the secondary door shaft sleeve 502 is symmetrically provided with two sets of snap slots 5021. The snap rod 501 is provided with two sets of snap protrusions 5011 located corresponding to the snap slot 5021.
It should be understood that the secondary door shaft sleeve 502 and the snap rod 501 are provided correspondingly with the two sets of snap slots 5021 and the two sets of snap protrusions 5011 respectively, improving the stability of the snap assembly 5 in snapping.
In some embodiments, the length of the snap protrusion 5011 is equal to the length of the snap slot 5021.
As shown in Fig. 4, in some embodiments, the connecting rod 2 further comprises an elastic member 203. The elastic member 203 is configured to tension the first cylindrical cam 201 and the second cylindrical cam 202, so that the first cylindrical cam 201 and the second cylindrical cam 202 are abutting against each other.
Specifically, the first cylindrical cam 201 is provided with a first accommodating cavity, and the second cylindrical cam 202 is provided with a second accommodating cavity corresponding to the first accommodating cavity. A first end of the elastic member 203 is fixedly disposed inside the first accommodating cavity, and a second end is fixedly disposed inside the second accommodating cavity, so that when the first cylindrical cam 201 jacks up or lowers the second cylindrical cam 202, ensuring the second cylindrical cam 202 and the first cylindrical cam 201 are always abutting against each other.
Further, the elastic member 203 is configured to be an expandable and retractable spring.
In some embodiments, when the main door 6 is closed, the upper top surface of the snap protrusion 5011 is flush with the lower bottom surface of the snap slot 5021.
Specifically, when the main door 6 is closed, the upper top surface of the snap protrusion 5011 is flush with the lower bottom surface of the snap slot 5021. Thus, in a moment when the main door 6 is opened, the connecting rod 2 drives the snap rod 501 to raise and be snapped into the secondary door shaft sleeve 502.
In some embodiments, the snap slot 5021 is in a vertical straight-line shape.
It should be understood that the snap slot 5021 is designed in the vertical straight-line shape conducive to the snap protrusion 5011 snapped into the snap slot 5021.
In some embodiments, the length of the snap slot 5021 is greater than or equal to the preset length.
Specifically, the length of the snap slot 5021 is greater than or equal to 0.5 mm. For example, the length of the snap slot 5021 is 1 mm, 1.5 mm, or 2 mm.
As shown in Figs. 7 and 8, a door-in-door cabinet is provided by the embodiment of the present disclosure, comprises a cabinet body 8 and a door body disposed on an opening of the cabinet body 8, and further comprises the above door body hinge assembly.
Specifically, the above door body hinge assembly is disposed inside the door body and is connected to the main door 6 by the first hinge plate 3.
As shown in Fig. 8, in some embodiments, the door body comprises the main door 6 and the secondary door 7. The first gear 101 and the second gear 102 are rotatably disposed on a pivot side surface of the main door 6. The secondary door shaft sleeve 502 is fixedly disposed on a pivot side surface of the secondary door 7. When the main door 6 is opened, the first gear 101 drives the second gear 102 to rotate, the connecting rod 2 drives the second hinge plate 4 to raise, so that the snap rod 501 is snapped into the secondary door shaft sleeve 502, and the secondary door 7 and the main door 6 moves synchronously.
Specifically, the first gear 101 and the second gear 102 are disposed on the pivot side surface of the main door 6, and the main door 6 is rotatably around the first gear 101 to open or close the opening of the cabinet body 8. When the main door 6 is opened, the first gear 101 rotates relative to the main door 6 and the second gear 102, and the second gear 102 is driven to rotate. The shaft of the second gear 102 is connected to the snap assembly 5 by the second hinge plate 4, when the second gear 102 rotates to drive the second hinge plate 4 to raise, so that the snap assembly 5 is in a snapped state to lock the secondary door 7 on the main door 6, thus when the user rotates the main door 6, the secondary door 7 rotates following the main door 6 synchronously. When the main door 6 is closed, the snap assembly 5 is in the disengaged state, and the secondary door 7 can rotate independently relative to the main door 6, so that the user can close the main door 6 and open the secondary door 7 independently.
In some embodiments, the first hinge plate 3 comprises the first end provided with the shaft hole, and the second end fixedly connected to the cabinet body 8.
In some embodiments, the shaft of the first gear 101 is fixedly inserted into the shaft hole of the first hinge plate 3, so that when the main door 6 drives the second gear 102 to move, the first gear 101 rotates relatively to the main door 6, and drives the second gear 102 to rotate.
Specifically, the shaft hole of the first hinge plate 3 is configured to be a profiled shaft hole, so that when the first gear 101 is inserted into the shaft hole, the first gear 101 cannot move relatively to the first hinge plate 3. Thus, when the main door 6 is opened, the first hinge plate 3 is fixedly connected to the cabinet body 8, so that the gear 101 cannot rotate relatively to the cabinet body 8, but rotate relatively to the main door 6, to drive the second gear 102 to rotate.
In some embodiments, the pivot side surface of the main door 6 is provided with the first shaft sleeve and the second shaft sleeve. The shaft of the first gear 101 is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear 102 is rotatably disposed inside the second shaft sleeve.
In some embodiments, the above door-in-door cabinet further comprises an end cap.
Specifically, the end cap is disposed on the shaft hole of the first hinge plate 3 for fixing the shaft of the first gear 101 inside the shaft hole of the first hinge plate 3.
The above description and drawings sufficiently illustrate embodiments of the present disclosure to enable practice by those skilled in the art. Other embodiments may comprise structural and other modifications. Embodiments represent only possible variations. Unless explicitly required, individual parts and functions are optional, and the order of operation can vary. Portions and features of some embodiments may be included in or in place of portions and features of other embodiments. Embodiments of the present disclosure are not limited to the structures already described above and shown in the figures, and are subject to various modifications and changes without departing from their scope. The scope of the present invention is defined by the attached claims.

Claims

A door body hinge assembly, characterized in that, comprising:
a first gear, disposed on a main door by a first hinge plate;

a second gear, engaged with the first gear and disposed on the main door; and

a snap assembly, disposed on a secondary door and connected to the second gear by a second hinge plate;

wherein, when the main door is opened, the first gear is engaged with the second gear, the second gear drives the second hinge plate to raise, and the snap assembly is in a snapped state to drive the secondary door and the main door to move synchronously.
The door body hinge assembly according to claim 1, wherein the second hinge plate comprises:
a connecting rod, connecting the second hinge plate and the second gear and configured to be a raisable and lowerable structure;

wherein, when the main door is opened, the first gear drives the second gear to rotate, to raise the connecting rod, to drive the second hinge plate to raise, so that the snap assembly is in the snapped state.
The door body hinge assembly according to claim 2, wherein the connecting rod comprises:
a first cylindrical cam, fixedly connected to a shaft of the second gear, and

a second cylindrical cam, fixedly connected to the second hinge plate and abutted against the first cylindrical cam;

wherein the second gear is configured to drive the first cylindrical cam to rotate so that the first cylindrical cam jacks up the second cylindrical cam and the second hinge plate.
The door body hinge assembly according to claim 1, wherein the snap assembly comprises:
a secondary door shaft sleeve, fixedly disposed on the secondary door; and

a snap rod, inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate;

wherein, when the second gear rotates, the snap rod is driven to raise and snap into the secondary door shaft sleeve.
The door body hinge assembly according to claim 3, wherein the connecting rod further comprises:
an elastic member, configured to tension the first cylindrical cam and the second cylindrical cam, so that the first cylindrical cam and the second cylindrical cam are abutting against each other.
A door-in-door cabinet, comprising a cabinet body and a door body disposed on an opening of the cabinet body, characterized in that, further comprising:
the door body hinge assembly according to any one of claims 1 to 5.
The door-in-door cabinet according to claim 6, wherein the door body comprises:
a main door, wherein the first gear and the second gear are rotatably disposed on a pivot side surface of the main door; and

a secondary door, wherein the secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door;

wherein, when the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
The door-in-door cabinet according to claim 7, wherein
the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
The door-in-door cabinet according to claim 8, wherein
a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that, when the main door drives the second gear to move, the first gear rotates relatively to the main door, and drives the second gear to rotate.
The door-in-door cabinet according to claim 7, wherein
the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve;

wherein the shaft of the first gear is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly, characterized in that, comprising:
a first gear, disposed on a main door;

a second gear, engaged with the first gear, and disposed on a main door;

a connecting rod, connecting a second hinge plate and the second gear, wherein the connecting rod is configured to be a raisable and lowerable structure; and

a snap assembly, disposed on a secondary door and connected to the second gear by the second hinge plate;

wherein the connecting rod is provided with a cam, and, when the main door is opened, the cam drives the second hinge plate to raise, so that the snap assembly is in a snapped state and the secondary door and the main door move synchronously.
The door body hinge assembly according to claim 11, wherein the connecting rod comprises:
a first cylindrical cam, comprising a first inclined section surface; and

a second cylindrical cam, comprising a second inclined section surface;

wherein, when the main door is closed, the first inclined section surface is complementarily attached to the second inclined section surface.
The door body hinge assembly according to claim 12, wherein
the connecting rod comprises an outer side surface facing the secondary door and an inner side surface opposite to the outer side surface; and

when the main door is closed, the first inclined section surface is complementarily attached to the second inclined section surface with a lowest joint on the inner side surface.
The door body hinge assembly according to claim 11, wherein the snap assembly comprises:
a secondary door shaft sleeve, fixedly disposed on the secondary door; and

a snap rod, inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate;

wherein the first cylindrical cam jacks up the second cylindrical cam and the snap rod is driven to raise and snap into the secondary door shaft sleeve by the second hinge plate.
The door body hinge assembly according to claim 14, wherein
a bottom end of the secondary door shaft sleeve is provided with a snap slot; and

the snap rod is provided with a snap protrusion located corresponding to the snap slot;

wherein the second cylindrical cam drives the snap rod to raise by the second hinge plate, the snap protrusion is embedded into the snap slot, so that the snap assembly is in the snapped state.
A door-in-door cabinet, comprising a cabinet body and a door body disposed on an opening of the cabinet body, characterized in that, further comprising:
the door body hinge assembly according to any one of claims 11 to 15.
The door-in-door cabinet according to claim 16, wherein the door body comprises:
a main door, wherein the first gear and the second gear are rotatably disposed on a pivot side surface of the main door; and

a secondary door, wherein the secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door;

wherein, when the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
The door-in-door cabinet according to claim 17, wherein
the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
The door-in-door cabinet according to claim 18, wherein
a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that, when the main door drives the second gear to move, the first gear rotates relatively to the main door and drives the second gear to rotate.
The door-in-door cabinet according to claim 17, wherein
the pivot side surface of the main door is provided with the first shaft sleeve and the second shaft sleeve;

wherein the shaft of the first gear is rotatably disposed inside the first shaft sleeve and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly, characterized in that, comprising:
a transmission assembly, disposed on the main door by a first hinge plate;

a connecting rod, connecting a second hinge plate and the transmission assembly, wherein the connecting rod is configured to be a raisable and lowerable structure;

a secondary door shaft sleeve, fixedly disposed on the secondary door; and

a snap rod, inserted into the secondary door shaft sleeve and fixedly connected to the second hinge plate;

wherein, when the main door is opened, the transmission assembly drives the second hinge plate to raise by the connecting rod, to drive the snap rod to raise and snap into the secondary door shaft sleeve, so that the secondary door and the main door move synchronously.
The door body hinge assembly according to claim 21, wherein
a bottom end of the secondary door shaft sleeve is provided with a snap slot; and

the snap rod is provided with a snap protrusion located corresponding to the snap slot;

wherein the connecting rod drives the snap rod to raise by the second hinge plate and the snap protrusion is embedded into the snap slot, so that the snap rod is snapped into the secondary door shaft sleeve.
The door body hinge assembly according to claim 22, wherein
when the main door is closed, an upper top surface of the snap protrusion is flush with a lower bottom surface of the snap slot.
The door body hinge assembly according to claim 22, wherein
the snap slot is in a vertical straight-line shape.
The door body hinge assembly according to claim 24, wherein
a length of the snap slot is greater than or equal to a preset length.
The door body hinge assembly according to claim 21, wherein the transmission assembly comprises:
a first gear, disposed on the main door; and

a second gear, engaged with the first gear and disposed on the main door;

wherein the connecting rod is fixedly connected to the second gear, the first gear is configured to drive the second gear to rotate, to drive the connecting rod to raise.
The door body hinge assembly according to claim 26, wherein the connecting rod comprises:
a first cylindrical cam, fixedly connected to a shaft of the second gear, and

a second cylindrical cam, fixedly connected to the second hinge plate and abutted against the first cylindrical cam;

wherein the second gear is configured to drive the first cylindrical cam to rotate so that the first cylindrical cam jacks up the second cylindrical cam and the second hinge plate.
A door-in-door cabinet, comprising the cabinet body and the door body disposed on an opening of the cabinet body, characterized in that, further comprising:
the door body hinge assembly according to any one of claims 21 to 27.
The door-in-door cabinet according to claim 28, wherein the door body comprises:
a main door, wherein the first gear and the second gear are rotatably disposed on a pivot side surface of the main door; and

a secondary door, wherein the secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door;

wherein, when the main door is opened, the first gear drives the second gear to rotate, the connecting rod drives the second hinge plate to raise, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
The door-in-door cabinet according to claim 28, wherein
the first hinge plate is provided with a shaft hole, a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that when the main door drives the second gear to move, the first gear rotates relatively to the main door, to drive the second gear to rotate.
The door-in-door cabinet according to claim 28, wherein
the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve;

wherein the shaft of the first gear is rotatably disposed inside the first shaft sleeve, and the shaft of the second gear is rotatably disposed inside the second shaft sleeve.
A door body hinge assembly, characterized in that, comprising:
a first cylindrical cam, rotatably disposed on a main door;

a second cylindrical cam, abutted against the first cylindrical cam and fixedly connected to a second hinge plate;

a secondary door shaft sleeve, fixedly disposed on the secondary door, wherein a bottom of the secondary door shaft sleeve is provided with a snap slot; and

a snap rod, inserted into the secondary door shaft sleeve, wherein a first end of the snap rod is fixedly connected to the second hinge plate, and a second end of the snap rod is provided with a snap protrusion located corresponding to the snap slot;

wherein, when the main door is closed, the first cylindrical cam and the second cylindrical cam are in a completely abutting state, and the snap protrusion and the snap slot are in a disengaged state, so that the secondary door moves independently; when the main door rotates, the first cylindrical cam rotates relatively to the second cylindrical cam to jack up the second cylindrical cam, and the snap rod is driven to raise, so that the snap protrusion is snapped into the snap slot, and the secondary door and the main door move synchronously.
The door body hinge assembly according to claim 32, wherein
a length of the snap slot is greater than or equal to a maximum jacked height of the second cylindrical cam by the first cylindrical cam.
The door body hinge assembly according to claim 33, wherein
a bottom end of the secondary door shaft sleeve is provided with two sets of snap slots; and

the snap rod is provided with two sets of snap protrusions located corresponding to the two sets of snap slots.
The door body hinge assembly according to claim 34, wherein
a length of the snap protrusion is equal to the length of the snap slot.
The door body hinge assembly according to claim 32, further comprising:
a transmission assembly, disposed on the main door by a first hinge plate;

wherein the first cylindrical cam is fixedly connected to the transmission assembly so that the transmission assembly drives the first cylindrical cam to rotate.
The door body hinge assembly according to claim 36, wherein the transmission assembly comprises:
a first gear, disposed on the main door; and

a second gear, engaged with the first gear, and disposed on the main door;

wherein the first cylindrical cam is fixedly connected to the second gear, and the first gear is configured to drive the second gear to rotate, so that the first cylindrical cam is driven to rotate and jacks up the second cylindrical cam.
A door-in-door cabinet, comprising the cabinet body and the door body disposed on an opening of the cabinet body, characterized in that, further comprising:
the door body hinge assembly according to any one of claims 35 to 37.
The door-in-door cabinet according to claim 37, wherein the door body comprises:
a main door, wherein the first gear and the second gear are rotatably disposed on a pivot side surface of the main door; and

a secondary door, wherein a secondary door shaft sleeve is fixedly disposed on a pivot side surface of the secondary door;

wherein, when the main door is opened, the first gear drives the second gear to rotate, the first cylindrical cam jacks up the second hinge plate, so that the snap rod is snapped into the secondary door shaft sleeve, and the secondary door and the main door move synchronously.
The door-in-door cabinet according to claim 38, wherein
the first hinge plate comprises a first end provided with a shaft hole, and a second end fixedly connected to the cabinet body.
The door-in-door cabinet according to claim 39, wherein
a shaft of the first gear is fixedly inserted into the shaft hole of the first hinge plate, so that when the main door drives the second gear to move, the first gear rotates relatively to the main door, and drives the second gear to rotate.
The door-in-door cabinet according to claim 40, wherein
the pivot side surface of the main door is provided with a first shaft sleeve and a second shaft sleeve;

wherein the shaft of the first gear is rotatably disposed inside the first shaft sleeve, and a shaft of the second gear is rotatably disposed inside the second shaft sleeve.