CN112761420B

CN112761420B - Door assembly and storage cabinet

Info

Publication number: CN112761420B
Application number: CN202011613682.5A
Authority: CN
Inventors: 解卫浩; 任志洁; 席永学
Original assignee: Hubei Midea Refrigerator Co Ltd
Current assignee: Hubei Midea Refrigerator Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-04-19
Anticipated expiration: 2040-12-30
Also published as: CN112761420A

Abstract

The invention provides a door assembly and a storage cabinet. The door assembly comprises a door body, wherein an installation groove is formed in the door body, and a handle plate is installed in the installation groove; the detection assembly is arranged on the door body and is used for generating a detection signal; the driving device is arranged on the door body and is suitable for driving the handle plate to switch between an extending state and a contracting state based on the detection signal; in the extending state, the handle plate extends out of the door body, and in the contracting state, the handle plate contracts in the door body to shield the mounting groove. The door assembly can ensure that the front surface of the door body is flat and concise and is corresponding, the side surface of the door body does not need to be additionally provided with an exposed mounting groove, and the door body can be opened and closed conveniently by a user while the integrity and the simplicity of the door body are ensured.

Description

Door assembly and storage cabinet

Technical Field

The invention relates to the technical field of storage equipment, in particular to a door assembly and a storage cabinet.

Background

In order to facilitate the opening of the door body of the storage cabinet, the door body of the storage cabinet is mostly provided with a handle protruding outwards. Because the handle is convexly arranged on the door body to influence the appearance, the handle plate is arranged on the side wall of the door body. Although the handle plate is arranged on the door body, the front surface of the door body can be kept simple and smooth, no matter a single door body or a split door body is adopted, a recess which can be operated by a human hand needs to be additionally reserved on the side part of the door body so as to realize the action of buckling the handle plate to open the door, so that the integrity of the door body is poor, and the appearance is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a door assembly which can ensure that a door body is smooth and is convenient to open and close.

The invention also provides a storage cabinet.

According to a first aspect embodiment of the present invention, a door assembly includes:

the door body is provided with an installation groove, and a handle plate is installed in the installation groove;

the detection assembly is arranged on the door body and is used for generating a detection signal;

the driving device is arranged on the door body and is suitable for driving the handle plate to be switched between an extending state and a contracting state based on the detection signal; in the stretching state, the handle plate stretches out of the door body, and in the contracting state, the handle plate contracts in the door body to shield the mounting groove.

According to the door assembly of the first aspect of the invention, when the door needs to be opened, the detection assembly can generate the detection signal for representing the opening of the door, the driving device can drive the handle plate to be switched from the contraction state to the extension state based on the detection signal, and when the handle plate is switched to the extension state, a user can pull the handle plate to open the door body. When the door needs to be closed, the detection assembly can generate a detection signal for representing the closing of the door, and the driving device can drive the handle plate to be switched from the extending state to the contracting state and shield the installation groove based on the detection signal. Therefore, the front face of the door body is flat and simple, correspondingly, the side face of the door body is not required to be additionally provided with an exposed mounting groove, and the door body can be opened and closed conveniently by a user while the integrity and the simplicity of the door body are ensured.

According to one embodiment of the invention, the door further comprises a support and a support, the support is mounted on the door body, a first end of the support is suitable for being connected to the support through a hinge structure, and the handle plate is arranged at a second end of the support.

According to an embodiment of the present invention, the hinge structure includes a hinge hole and a hinge shaft which are engaged with each other, the hinge hole being provided at one of the bracket and the holder, the hinge shaft being provided at the other of the bracket and the holder; or,

the hinge hole set up in the support with the support, the articulated shaft wears to locate respectively in the support with the hinge hole on the support.

According to one embodiment of the invention, the handle plate and/or the bracket are/is suitable for being clamped on the support through a limiting structure so as to limit the handle plate and the bracket from falling out of the support.

According to one embodiment of the invention, the limiting structure comprises a limiting clamping plate arranged on the support, the first end of the limiting clamping plate is connected with the support, and the second end of the limiting clamping plate is provided with a clamping plate; in the extended state, the handle plate and/or the bracket are/is suitable for being clamped on the side face, facing the support, of the clamping plate.

According to one embodiment of the invention, the limiting structure further comprises a limiting projection formed on the edge of the handle plate and/or the bracket; in the extending state, the limiting bulge is abutted to the edge of the support.

According to one embodiment of the invention, a receiving groove for mounting the bracket is formed on the support, a guide block is formed on the bracket, and a first guide groove and a second guide groove which are oppositely arranged are formed on the side wall of the receiving groove; in the extended state, the guide block is located in the first guide groove, and in the retracted state, the guide block is located in the second guide groove.

According to one embodiment of the invention, the detection assembly comprises a first detection piece, the first detection piece is mounted on the door body, the first detection piece is used for detecting physical signs and generating a first detection signal, and the driving device drives the handle plate to be switched from the extending state to the retracting state based on the first detection signal; and/or the presence of a gas in the gas,

the driving device drives the handle plate to be switched from the retracted state to the extended state based on the first detection signal.

According to one embodiment of the invention, the detection assembly further comprises a second detection piece and a third detection piece, and the second detection piece and the third detection piece are mounted on the door body;

the second detection piece is suitable for generating a second detection signal for controlling the driving device to stop when the handle plate is detected to move to the extending state;

the third detection element is suitable for generating a third detection signal for controlling the driving device to stop when the handle plate is detected to move to the contraction state.

According to one embodiment of the present invention, the driving device includes:

the first driving piece is arranged on the door body;

the elastic piece, the elastic piece is the torsional spring, the both ends of torsional spring respectively with first driving piece and leg joint to the drive the handle board switches between extension state and shrink state.

According to one embodiment of the invention, the support is provided with mounting holes corresponding to the second detection piece and the third detection piece one to one, and a first push rod and a second push rod are respectively arranged in the mounting holes in a penetrating manner;

in the extended state, the first push rod is in contact with the second detection piece and the second push rod is separated from the third detection piece;

in the contracted state, the first push rod is disengaged from the second detection member and the second push rod is in contact with the third detection member.

According to an embodiment of the present invention, from the retracted state to the extended state, the bracket is adapted to bring the first push rod into contact with the second detection member, and the first driving member is adapted to stop based on the second detection signal and to reverse based on the first detection signal;

from the extended state to the retracted state, the bracket is suitable for driving the second push rod to contact with the third detection piece, and the first driving piece is suitable for stopping based on the third detection signal.

According to one embodiment of the invention, the driving device further comprises a mounting seat, the first driving part is mounted on the mounting seat, a shock absorption pad is arranged between the first driving part and the mounting seat, and an output shaft of the first driving part is in meshing transmission with the bracket.

According to one embodiment of the invention, the support is provided with a support block, the bracket is provided with an avoidance hole, and the support block is suitable for being supported on a panel of the door body in the contraction state.

the elastic piece is a torsion spring, and two ends of the torsion spring are respectively connected with the support and the bracket so as to switch the handle plate from the extending state to the contracting state;

the second driving piece is arranged on the door body;

the swing rod is connected with the second driving piece, and the first end of the swing rod is suitable for tightly pushing against the lower end face of the support so as to switch the handle plate from the contraction state to the extension state.

According to an embodiment of the invention, the detection assembly further includes a fourth detection piece, the fourth detection piece is mounted on the door body, and the fourth detection piece is adapted to generate a fourth detection signal for controlling the driving device to reversely rotate based on the movement state of the handle plate.

the elastic piece is a torsion spring, and two ends of the torsion spring are respectively connected with the support and the bracket so as to switch the handle plate from the contraction state to the extension state;

the second driving piece is arranged on the door body;

the swing rod is connected with the second driving piece, and the first end of the swing rod is suitable for pressing the upper end face of the support so as to switch the handle plate from the extending state to the contracting state.

According to an embodiment of the invention, the locking device further comprises a locking device, the locking device comprises a locking seat and a clamping column which are correspondingly arranged, the locking seat is arranged on one of the support and the bracket, the clamping column is arranged on the other one of the support and the bracket, and the locking seat is matched with the clamping column to lock or release the bracket.

According to one embodiment of the invention, the detection assembly further comprises a second detection member and a fifth detection member;

the fifth detection part is suitable for generating a fifth detection signal for controlling the second driving part to stop and reversely rotate after the swing rod is detected to separate the locking seat from the clamping column.

According to one embodiment of the invention, the number of the door bodies is at least two, and the handle plates on two adjacent door bodies are arranged in a flush mode or in a staggered mode.

A locker according to an embodiment of a second aspect of the invention comprises a door assembly as described above.

According to the storage cabinet disclosed by the embodiment of the second aspect of the invention, by arranging the door assembly, the overall structure of the storage cabinet can be simplified, and the surface of the door body of the storage cabinet is smooth.

According to one embodiment of the invention, the cabinet is a refrigerator, a cupboard or a showcase.

One or more technical solutions in the present invention have at least one of the following technical effects:

Further, according to the storage cabinet of the second aspect of the invention, by providing the door assembly, the overall structure of the storage cabinet can be simplified, and the surface of the door body of the storage cabinet is flat.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic block diagram of a door assembly in which a handle panel is in a retracted state, according to an embodiment of the present invention;

FIG. 2 is a schematic block diagram of a door assembly with a handle panel in an extended position provided by an embodiment of the present invention;

FIG. 3 is a schematic exploded view of a handle plate, bracket and support provided by embodiments of the present invention;

FIG. 4 is a schematic structural diagram of the installation of the handle plate with the bracket and the support in a contracted state according to the embodiment of the invention;

FIG. 5 is a schematic structural view of a handle plate installed with a bracket and a support in an extended state according to an embodiment of the present invention;

FIG. 6 is a schematic front view of a handle plate, bracket and support provided by embodiments of the present invention;

FIG. 7 is a schematic cross-sectional view taken in the direction A-A of FIG. 6;

FIG. 8 is a schematic block diagram of a bracket and a handle plate according to an embodiment of the present invention;

FIG. 9 is a schematic exploded view of another handle plate, bracket and support provided by embodiments of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

FIG. 11 is a schematic front view of another handle plate, bracket and support provided by embodiments of the present invention;

FIG. 12 is a schematic cross-sectional view taken in the direction B-B in FIG. 11;

fig. 13 is a partial enlarged view at B in fig. 12;

FIG. 14 is a schematic block diagram of another embodiment of the present invention, showing the handle plate mounted to the bracket and support in a retracted state;

FIG. 15 is a schematic block diagram of another alternative tab plate in an extended position mounted to a bracket or support in accordance with embodiments of the present invention;

FIG. 16 is a schematic block diagram of another bracket and handle plate provided by embodiments of the present invention;

FIG. 17 is a schematic block diagram of another mount provided by an embodiment of the invention;

FIG. 18 is a schematic structural view of a bracket and a handle plate according to still another embodiment of the present invention;

FIG. 19 is an enlarged view of a portion of FIG. 18 at C;

FIG. 20 is an enlarged fragmentary view at D in FIG. 18;

FIG. 21 is a schematic block diagram of another handle plate, bracket and support provided by an embodiment of the invention;

FIG. 22 is an enlarged view of a portion of FIG. 21 at E;

FIG. 23 is an enlarged view of a detail F of FIG. 21;

FIG. 24 is a schematic structural view of still another mount provided by the embodiment of the invention;

FIG. 25 is a schematic block diagram of yet another mount and bracket arrangement provided by an embodiment of the present invention.

Reference numerals:

100. a door body; 102. a handle plate; 104. a support; 106. a support; 108. a hinge hole; 110. hinging a shaft; 112. a limiting clamping plate; 114. a clamping and connecting plate; 116. a limiting bulge; 118. a guide block; 120. a first guide groove; 122. a second guide groove; 124. a support block; 126. avoiding holes; 128. a second detecting member; 130. a third detecting member; 132. mounting holes; 134. a first push rod; 135. a second push rod; 136. a first driving member; 138. an elastic member; 140. a mounting seat; 142. a shock pad; 144. a second driving member; 146. a swing rod; 147. a roller; 148. a fourth detecting member; 150. a locking seat; 152. clamping the column; 154. and a fifth detecting member.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 25, the door assembly according to the embodiment of the first aspect of the present invention includes a door body 100, a detection assembly, and a driving device; a mounting groove is formed on the door body 100, and a handle plate 102 is mounted in the mounting groove; the detection assembly is mounted on the door body 100 and used for generating a detection signal; the driving device is mounted on the door body 100 and is suitable for driving the handle plate 102 to switch between the extending state and the contracting state based on the detection signal; in the extended state, the handle plate 102 extends out of the door body 100, and in the retracted state, the handle plate 102 is retracted in the door body 100 to shield the installation groove.

According to the door assembly of the first aspect of the present invention, when the door needs to be opened, the detection assembly can generate a detection signal for indicating the opening of the door, the driving device can drive the handle plate 102 to switch from the retracted state to the extended state based on the detection signal, and when the handle plate 102 is switched to the extended state, the user can pull the handle plate 102 to open the door body 100. When the door needs to be closed, the detection assembly can generate a detection signal for representing the closing of the door, and the driving device can drive the handle plate 102 to be switched from the extending state to the contracting state and shield the installation groove based on the detection signal. Therefore, the front face of the door body 100 is flat and simple, correspondingly, structures such as handle grooves exposed outside do not need to be additionally arranged on the side face of the door body 100, and the door body 100 is convenient for a user to open and close while the integrity and the simplicity of the door body 100 are ensured.

Specifically, referring to fig. 1 to 25, in the embodiment of the present invention, the door assembly mainly includes a door body 100, a detection assembly and a driving device. The door assembly will be described below as being provided to a refrigerator as an example.

In the embodiment of the present invention, the refrigerator may be a single-door refrigerator or a side-by-side refrigerator. When the refrigerator is a single-door refrigerator, the mounting groove and the handle plate 102 may be formed at an edge position of the door body 100; as shown in fig. 1 and 2, when the refrigerator is a side by side refrigerator, the mounting groove and the handle plate 102 may be formed on a side close to each other on two adjacent door bodies 100, or on a side away from each other on two adjacent door bodies 100. In addition, when the mounting grooves and the handle plates 102 are formed on the sides of the two adjacent door bodies 100 close to each other, the mounting grooves and the handle plates 102 on the two adjacent door bodies 100 may be flush with each other or staggered with each other. In the embodiment of the invention, the mounting grooves and the handle plates 102 on two adjacent door bodies 100 are flush, so that the integral appearance of the door bodies 100 is better. The mounting slots in the embodiments of the present invention are used to mount the handle plate 102.

According to an embodiment of the present invention, the door assembly in the embodiment of the present invention further includes a bracket 104 and a support 106, the support 106 is mounted to the door body 100, a first end of the bracket 104 is adapted to be connected to the support 106 through a hinge structure, and the handle plate 102 is disposed at a second end of the bracket 104.

Referring to fig. 3, the support 106 is installed in the installation groove as described above, and at the same time, the support 106 is also used for installing the bracket 104 and the like. Specifically, a receiving groove for mounting the bracket 104 is formed on the holder 106, and the shape of the receiving groove is adapted to the shape of the bracket 104. The first end of the bracket 104 is mounted to the support 106 by a hinge structure, i.e., it is understood that the bracket 104 is capable of rotating relative to the support 106 and the second end of the bracket 104 is used to mount the handle plate 102 as described above. In one embodiment, the handle plate 102 and the second end of the bracket 104 may be detachably connected by a fastener, or the handle plate 102 and the bracket 104 may be connected by an integral molding.

In the embodiment of the present invention, the handle plate 102 has a substantially L-shaped structure, one side of the handle plate 102 is connected to the bracket 104, and the other side of the handle plate 102 is bent toward the bracket 104, so that a pulling space for a user's hand to extend into is formed between the other side of the handle plate 102 and the bracket 104.

According to an embodiment of the present invention, the hinge structure includes a hinge hole 108 and a hinge shaft 110 which are engaged with each other, the hinge hole 108 being provided to one of the bracket 104 and the support 106, and the hinge shaft 110 being provided to the other of the bracket 104 and the support 106; or the hinge holes 108 are formed in the bracket 104 and the support 106, and the hinge shafts 110 are respectively formed through the hinge holes 108 of the bracket 104 and the support 106.

With continued reference to fig. 3, in the embodiment of the present invention, the hinge structure can be implemented in at least the following two ways:

the implementation mode is as follows:

a hinge hole 108 is arranged on the support 106, and a hinge shaft 110 matched with the hinge hole 108 is arranged on the bracket 104; or the bracket 104 is provided with a hinge hole 108, the support 106 is provided with a hinge shaft 110 matched with the hinge hole 108, and the hinge shaft 110 is arranged in the hinge hole 108 in a penetrating way to realize the rotary connection between the bracket 104 and the support 106.

The implementation mode two is as follows:

hinge holes 108 are formed in the bracket 104 and the support 106, and hinge shafts 110 are arranged through the hinge holes 108 in the bracket 104 and the support 106 to realize the rotary connection between the bracket 104 and the support 106.

Of course, in other embodiments, a protrusion structure may be provided on one of the bracket 104 and the support 106, a hinge hole 108 may be provided on the other of the bracket 104 and the support 106, and the bracket 104 and the support 106 may be rotatably connected by inserting the protrusion structure into the hinge hole 108.

In the embodiment of the present invention, the support 104 and the support 106 are rotatably connected by the second implementation manner.

According to one embodiment of the present invention, the handle plate 102 and/or the bracket 104 are adapted to be snapped to the seat 106 by a retaining structure to limit the handle plate 102 and the bracket 104 from being removed from the seat 106.

In other words, to prevent the handle plate 102 from being disengaged from the seat 106 when the handle plate 102 is in the extended state, the handle plate 102, the bracket 104 are adapted to accomplish the above-mentioned purpose by a stopper structure.

Specifically, with continued reference to fig. 3, according to an embodiment of the present invention, the limiting structure includes a limiting clamping plate 112 disposed on the support 106, a first end of the limiting clamping plate 112 is connected to the support 106, and a second end of the limiting clamping plate 112 is formed with a clamping plate 114; in the extended state, the handle plate 102 and/or the bracket 104 are adapted to snap-fit to the side of the snap plate 114 facing the support 106.

The first end of the limiting clamping plate 112 is fixedly connected to the support 106, the second end of the limiting clamping plate 112 is connected to the clamping plate 114, the clamping plate 114 and the limiting clamping plate 112 are approximately perpendicular to each other, and the clamping plate 114 is used for being clamped to the upper surface of the support 104 to achieve the purpose of preventing the support 104 from being separated from the support 106. Accordingly, an opening through which the stopper tab 112 passes is formed in the bracket 104, and the tab 114 is connected to a portion of the stopper tab 112 that passes through the opening. The clamping plate 114 and the limiting clamping plate 112 can be detachably connected through a fastener, or the clamping plate 114 and the limiting clamping plate 112 can also be connected in an integrally formed manner.

In addition, when handle plate 102 is in the state of stretching out, joint board 114 can also improve handle plate 102's atress, promptly, when handle plate 102 pulled out the back, joint board 114 can block in the side of going up of support 104, and when the user stimulates handle plate 102, can be through the atress when butt relation of joint board 114 and support 104 is in order to improve pulling handle plate 102, convenience of customers pulls open door body 100.

With continued reference to fig. 3 and 5, according to an embodiment of the present invention, the position-limiting structure further includes a position-limiting protrusion 116 formed on an edge of the handle plate 102 and/or the bracket 104; in the extended state, the stop tab 116 abuts an edge of the support 106.

By providing the limiting protrusion 116 on the edge of the handle plate 102 and/or the bracket 104, the limiting protrusion 116 can abut against the edge of the support 106 when the handle plate 102 is in the extended state, so as to prevent the handle plate 102 from being pulled out of the support 106. For example, a limiting protrusion 116 may be disposed on the bottom of each side of the handle plate 102, and correspondingly, a plate-like structure protruding toward the inside of the receiving groove is disposed on the top of the edge of the support 106, and the limiting protrusions 116 on each side of the handle plate 102 can abut against the lower surface of the plate-like structure when the handle plate 102 is in the extended state. Of course, the force applied when the handle plate 102 is pulled out can be similarly increased by the abutting relationship between the stopper projection 116 and the plate-like structure.

With continued reference to fig. 3, according to an embodiment of the present invention, the bracket 104 is formed with a guide block 118, and a first guide slot 120 and a second guide slot 122 are formed on the side wall of the receiving slot; in the extended state, the guide block 118 is positioned in the first guide slot 120, and in the retracted state, the guide block 118 is positioned in the second guide slot 122.

By providing the first guide groove 120 and the second guide groove 122 on the side wall of the support 106 and providing the guide block 118 on the bracket 104 adapted to slidably switch in the first guide groove 120 and the second guide groove 122, the movement stability of the bracket 104 can be improved when the bracket 104 is switched between the retracted state and the extended state. Meanwhile, by providing the second guide groove 122 on the side wall of the receiving groove, and when the guide block 118 is placed in the second guide groove 122, the gap between the bracket 104 and the bottom of the receiving groove can also be limited by the cooperation of the second guide groove 122 with the guide block 118.

In the embodiment of the present invention, the first guide groove 120 and the second guide groove 122 are disposed opposite to each other, and the opposite sides of the first guide groove 120 and the second guide groove 122 are flared to facilitate the insertion of the guide block 118.

The detection assembly is installed on the door body 100 and used for detecting the physical sign signals and simultaneously realizing the limiting function of the driving device. The detection component can generate a corresponding detection signal and send the detection signal to the driving device, and the driving device can realize control of the handle plate 102 based on the detection signal after receiving the detection signal sent by the detection component.

According to an embodiment of the present invention, the detecting assembly includes a first detecting element (not shown in the figure), the first detecting element is installed on the door body 100, the first detecting element is used for detecting a physical sign and generating a first detecting signal, and the driving device drives the handle plate 102 to switch from the extended state to the retracted state based on the first detecting signal; and/or the driving device drives the handle plate 102 to switch from the retracted state to the extended state based on the first detection signal.

It is understood that the driving means may drive the handle plate 102 to switch from the extended state to the retracted state based on the first detection signal; the driving device may also drive the handle plate 102 to switch from the retracted state to the extended state based on the first detection signal. Or the driving device drives the handle plate 102 to switch from the extending state to the retracting state based on the first detection signal only; the driving means drives the handle plate 102 to switch from the retracted state to the extended state based on only the first detection signal.

Specifically, the first detection piece can be a proximity switch, an infrared sensor, and the like, and when the first detection piece detects that the user is close to the door body 100, the first detection piece can generate a first detection signal for representing a physical sign signal of a human body, and meanwhile, the first detection piece can also send the first detection signal to the driving device. The detection mode of the first detection piece can be that the first detection signal is generated after a plurality of seconds after the human body is detected, so that the misjudgment of the first detection piece can be avoided. Similarly, after the user leaves the door body 100, the first detection piece may also generate a first detection signal for indicating that the human body leaves, and after the first driving device receives the first detection signal, the handle plate 102 may be switched from the retracted state to the extended state, or the handle plate 102 may be switched from the extended state to the retracted state.

According to an embodiment of the present invention, the detecting assembly further includes a second detecting member 128 and a third detecting member 130, the second detecting member 128 and the third detecting member 130 are mounted on the door body 100; the second detecting member 128 is adapted to generate a second detection signal for controlling the driving means to stop upon detecting the movement of the handle plate 102 to the extended state; the third detecting member 130 is adapted to generate a third detecting signal for controlling the driving means to stop upon detecting the movement of the handle plate 102 to the contracted state.

Referring to fig. 3, the second detecting element 128 and the third detecting element 130 may use micro switches, in the embodiment of the present invention, the second detecting element 128 and the third detecting element 130 are installed on the door body 100, and the second detecting element 128 and the third detecting element 130 are used to limit the movement of the bracket 104. Specifically, when the handle plate 102 is switched to the extended state, the handle plate 102 or the bracket 104 can trigger the second detection member 128, and when the second detection member 128 is triggered, the second detection member 128 can generate a second detection signal and transmit the second detection signal to the driving device, and after the driving device receives the second detection signal, the driving device stops to keep the handle plate 102 in the extended state.

When the handle plate 102 is switched to the contracted state, the handle plate 102 or the bracket 104 can trigger the third detecting element 130, and after the third detecting element 130 is triggered, the third detecting element 130 can generate a third detecting signal and send the third detecting signal to the driving device, and after the driving device receives the third detecting signal, the driving device stops to keep the handle plate 102 in the contracted state.

Of course, in some other embodiments, the driving device may also stop with a delay after receiving the second detection signal and the third detection signal. In other words, after the driving device receives the second detection signal, the driving device stops delaying, so that the handle plate 102 can be locked in the extending state; similarly, when the driving device receives the third detection signal, the driving device also delays to stop, so that the handle plate 102 can be locked in the retracted state. This prevents the handle plate 102 from being shaken in the extended state and the retracted state.

The driving device is installed on the door body 100, and after receiving a detection signal sent by the detection assembly, the driving device drives the handle plate 102 to switch between an extending state and a contracting state, when the handle plate 102 is in the extending state, the handle plate 102 extends out of the door body 100, and at the moment, a user can pull the handle plate 102 to open the door body 100; when the handle plate 102 is in the contraction state, the handle plate 102 contracts back to the door body 100 and shields the installation groove, at the moment, a user can directly push the door body 100 to close the door body 100, and the handle plate 102 contracts back to the door body 100 and can shield the installation groove in the door body 100, so that the integrity of the appearance visual effect of the door body 100 is better.

In the embodiment of the present invention, the driving device may be implemented at least as follows:

the implementation mode is as follows:

referring to fig. 3 to 8, according to an embodiment of the present invention, the driving device includes a first driving member 136 and an elastic member 138; the first driving member 136 is mounted on the door body 100; the elastic member 138 is a torsion spring, and two ends of the torsion spring are respectively connected to the first driving member 136 and the bracket 104 to drive the handle plate 102 to switch between the extended state and the retracted state.

The first driving member 136 may use a motor, etc., the elastic member 138 may use a torsion spring, the torsion spring is disposed on the hinge shaft 110, one end of the torsion spring is connected to the first driving member 136, and the second end of the torsion spring is connected to the bracket 104. Therefore, when the first driving member 136 rotates, the torsion spring can be driven to rotate. That is, after receiving the first detection signal, the first driving member 136 may drive the torsion spring to rotate so as to switch the handle plate 102 from the retracted state to the extended state, or switch the handle plate 102 from the extended state to the retracted state.

In the embodiment of the present invention, from the retracted state to the extended state, the bracket 104 is adapted to bring the first push rod 134 into contact with the second detecting member 128, and the first driving member 136 is adapted to stop based on the second detecting signal and is adapted to reverse based on the first detecting signal; from the extended state to the retracted state, the bracket 104 is adapted to bring the second push rod 135 into contact with the third detecting member 130, and the first driving member 136 is adapted to stop based on the third detecting signal.

It will be appreciated that when the handle plate 102 is switched from the retracted state to the extended state, the bracket 104 can contact the first push rod 134, thereby causing the first push rod 134 to contact the second detection member 128 to trigger the second detection member 128. The second detecting member 128 generates a second detecting signal, and at this time, the first driving member 136 stops based on the second detecting signal, and the handle plate 102 is maintained in the extended state, and after the first detecting member generates a first detecting signal for indicating the departure of the human body, the first driving member 136 is reversed based on the first detecting signal. When the handle plate 102 is switched from the extended state to the retracted state, the bracket 104 can contact the second push rod 135, so that the second push rod 135 contacts the third detecting member 130 to trigger the third detecting member 130. The third detecting member 130 generates a third detecting signal, and the first driving member 136 stops based on the third detecting signal, and the handle plate 102 is maintained in the contracted state.

That is, in this implementation, the first driving member 136 drives the handle plate 102 to switch between two states, the extended state and the retracted state, based on the first detection signal.

Of course, in some other embodiments, the operation time of the first driving member 136 may be set to a predetermined value, for example, the operation time is automatically stopped after the first driving member 136 receives the first detection signal, so that when the handle plate 102 is in an abnormal condition during the switching to the extending state or the retracting state, the first driving member 136 may be automatically stopped to avoid the damage to the bracket 104 and the first driving member 136.

In addition, in the first implementation mode, when the handle plate 102 is stuck due to an abnormal reason, for example, a foreign object sticks to the handle plate 102 during the process of switching from the retracted state to the extended state, the first driving member 136 continues to operate to compress the torsion spring, the handle plate 102 does not operate at this time, when the operation reaches the set time, the first driving member 136 stops rotating, and when the foreign object is cleaned, the handle plate 102 can continue to automatically eject under the acting force of the torsion spring.

When the handle plate 102 is in the process of switching from the extended state to the retracted state and is blocked due to an abnormal reason, for example, the hand of the user is blocked, the first driving member 136 continues to operate to compress the torsion spring, the handle plate 102 does not operate at this time, when the operation is performed for a set time, the first driving member 136 stops rotating, the user can pull the handle plate 102 outwards, and when the hand of the user is pulled out of the handle plate 102, the handle plate 102 can retract under the action of the torsion spring.

In other words, the torsion spring can ensure that the handle plate 102 plays a role of buffering protection when the handle plate 102 is switched between the extending state and the retracting state.

Further, the first drive member 136 may also be coupled directly to the carriage 104 to enable direct drive of the carriage 104.

According to an embodiment of the present invention, the driving device further includes a mounting base 140, the first driving member 136 is mounted on the mounting base 140, a shock absorbing pad 142 is disposed between the first driving member 136 and the mounting base 140, and an output shaft of the first driving member 136 is in meshing transmission with the bracket 104.

Referring to fig. 3, a mount 140 is used to mount the first drive member 136, and the mount 140 may be mounted directly on the support 106. A shock absorbing pad 142 is further disposed between the mounting seat 140 and the first driving member 136, and the shock absorbing pad 142 may be a structural member similar to a rubber pad, and the shock absorbing pad 142 may reduce the shock when the first driving member 136 acts. One gear can be connected to the output shaft of the first driving member 136, and another gear can be connected to the hinge shaft 110, so that the transmission speed ratio between the first driving member 136 and the bracket 104 can be adjusted through the meshing transmission of the two gears, and the bracket 104 is prevented from rotating too fast.

According to an embodiment of the present invention, a supporting block 124 is disposed on the support 106, an avoiding hole 126 is formed on the bracket 104, and the supporting block 124 is adapted to be supported on a panel of the door body 100 in a contracted state.

As shown in fig. 3 to 6, when the handle plate 102 is in the contracted state, the top surface of the supporting block 124 can be supported on the bottom surface of the panel of the door body 100 by providing the supporting block 124, so as to ensure the structural strength of the panel of the door body 100. In the embodiment of the present invention, the supporting block 124 may be adhered to the supporting seat 106 or integrally formed on the supporting seat 106, and accordingly, in order to prevent the supporting seat 104 from interfering with the supporting block 124 when the supporting seat 104 is switched from the extended state to the retracted state, a relief hole 126 adapted to the supporting block 124 is formed on the supporting seat 104.

According to an embodiment of the present invention, the support 106 is further provided with mounting holes 132 corresponding to the second detecting member 128 and the third detecting member 130 one to one, and a first push rod 134 and a second push rod 135 are respectively inserted into the mounting holes 132; in the extended state, the first push rod 134 contacts the second detection member 128 and the second push rod 135 disengages from the third detection member 130; in the contracted state, the first push rod 134 is disengaged from the second detection member 128 and the second push rod 135 is in contact with the third detection member 130.

Referring to fig. 3 to 5, mounting holes 132 corresponding to the second detecting member 128 and the third detecting member 130 are respectively provided on the support 106, and it is understood that two mounting holes 132 may be provided on the support 106. A first push rod 134 and a second push rod 135 are respectively arranged in the two mounting holes 132 in a penetrating manner, the first push rod 134 and the second detection piece 128 are correspondingly arranged, and the second push rod 135 and the third detection piece 130 are correspondingly arranged. When the handle plate 102 is switched to the extended state, the bracket 104 presses the first push rod 134, the first push rod 134 contacts with the second detection piece 128, and the second detection piece 128 is triggered and generates a second detection signal; meanwhile, the second push rod 135 and the third detection member 130 are distant from each other. At this time, the first driving member 136 stops to make the handle plate 102 in the extended state after receiving the second detection signal. When the handle plate 102 is switched to the contracted state, the bracket 104 presses the second push rod 135, the second push rod 135 contacts with the third detection piece 130, and the third detection piece 130 is triggered and generates a third detection signal; meanwhile, the first push rod 134 and the second detection member 128 are distant from each other. At this time, the first driving member 136 stops to make the handle plate 102 in the contracted state after receiving the third detection signal.

In the embodiment of the present invention, referring to fig. 3, the first push rod 134 and the second push rod 135 are formed with inclined surfaces at one end toward the bracket 104, and in a direction from bottom to top shown in fig. 3, the inclined surface of the first push rod 134 gradually inclines toward the bracket 104, and the inclined surface of the second push rod 135 gradually inclines away from the bracket 104. Accordingly, the structure for pressing the first and

second push rods

134 and 135 on the bracket 104 may also have a slope, and the slope of the pressing structure is opposite to the slope of the first and

second push rods

134 and 135.

The implementation mode two is as follows:

referring to fig. 9 to 17, according to an embodiment of the present invention, the driving device includes an elastic member 138, a second driving member 144, and a swing link 146. The elastic member 138 is a torsion spring, and two ends of the torsion spring are respectively connected to the support 106 and the bracket 104 to switch the handle plate 102 from the extended state to the retracted state; the second driving member 144 is mounted on the door body 100; the swing link 146 is connected to the second driving element 144, and a first end of the swing link 146 is adapted to tightly abut against a lower end surface of the bracket 104, so as to switch the handle plate 102 from the retracted state to the extended state.

In this implementation, the driving means is constituted by the resilient member 138, the second driving member 144 and the swing link 146. The second driving member 144 may use an electric motor, a motor, etc.; the swing link 146 is connected to the output shaft of the second driver 144, for example, the output shaft of the second driver 144 may be connected to the swing link 146 by a key connection. The elastic member 138 may be a torsion spring, which is disposed through the hinge shaft 110, and one end of the torsion spring is connected to the support 106, and the second end of the torsion spring is connected to the bracket 104. The torsion spring is used to switch the handle plate 102 from the extended state to the retracted state.

With continued reference to fig. 9-17, in this implementation, the first end of the swing link 146 is adapted to abut against the lower end surface of the bracket 104 to switch the handle plate 102 from the retracted state to the extended state.

The swing link 146 is mounted on the second driving element 144, one end of the swing link 146 abuts against the lower end surface of the bracket 104, when the second driving element 144 drives the swing link 146 to rotate, the swing link 146 can lift the bracket 104, and meanwhile, in order to reduce the friction force between the swing link 146 and the bracket 104, a roller 147 is further disposed at one end of the swing link 146, which is in contact with the bracket 104.

Specifically, after the second driving element 144 receives the first detection signal indicating that the human body is approaching, the second driving element 144 acts to drive the swing link 146 to jack up upwards, so as to switch the handle plate 102 from the retracted state to the extended state, in this process, after the second end of the swing link 146 triggers the second detection element 128, the second driving element 144 receives the second detection signal, and the second driving element 144 stops or stops with a delay, at this time, the handle plate 102 is in the extended state. After the second driving element 144 receives the first detection signal indicating that the human body leaves, the second driving element 144 rotates reversely, the handle plate 102 is switched from the extending state to the retracting state under the action of the torsion spring, in this process, after the first end of the swing link 146 triggers the third detection element 130, the second driving element 144 stops or stops with time delay, and at this time, the handle plate 102 is in the retracting state.

According to an embodiment of the present invention, the detecting assembly further includes a fourth detecting element 148, the fourth detecting element 148 is mounted on the door body 100, and the fourth detecting element 148 is adapted to generate a fourth detecting signal for controlling the second driving element 144 to reversely rotate based on the movement state of the handle plate 102.

As shown in fig. 9, the fourth detecting member 148 may also be a structural member similar to a micro switch, and the fourth detecting member 148 is mounted on the door body 100. Specifically, when the handle plate 102 is switched from the retracted state to the extended state, the handle plate 102 has two extension stages, in the first extension stage, the second end of the handle plate 102 triggers the second detection element 128, the second driving element 144 receives the second detection signal to stop or stop with a delay, at this time, the user can pull the handle plate 102 to make the handle plate 102 enter the second extension stage, in the second extension stage of the handle plate 102, the bracket 104 triggers the fourth detection element 148 and makes the fourth detection element 148 generate a fourth detection signal for controlling the second driving element 144 to reverse, the second driving element 144 reverses based on the fourth detection signal, and after the first end of the swing link 146 triggers the third detection element 130, the second driving element 144 stops or stops with a delay; it will be appreciated that in this embodiment, the bracket 104 automatically switches to the retracted state under the action of the torsion spring after the user releases the handle plate 102 after completing the door opening action.

In this implementation, if the fourth detecting member 148 is disposed on the door assembly, the control signal for switching the handle plate 102 from the retracted state to the extended state is controlled by the first detecting signal generated by the first detecting member; the switching of the handle plate 102 from the extended state to the retracted state is not controlled based on the first detection signal.

The implementation mode is three:

referring to fig. 18 to 25, according to an embodiment of the present invention, the driving device includes an elastic member 138, a second driving member 144, and a swing link 146. The elastic member 138 is a torsion spring, and two ends of the torsion spring are respectively connected to the support 106 and the bracket 104 to switch the handle plate 102 from the retracted state to the extended state; the second driving member 144 is mounted on the door body 100; the swing link 146 is connected to the second driving member 144, and a first end of the swing link 146 is adapted to press the upper end surface of the bracket 104 to switch the handle plate 102 from the extended state to the retracted state.

In this implementation, the swing link 146 is used to switch the handle plate 102 from the extended state to the retracted state, and the torsion spring is used to switch the handle plate 102 from the retracted state to the extended state.

According to an embodiment of the present invention, the door assembly further includes a locking device, the locking device includes a locking seat 150 and a locking column 152, the locking seat 150 is disposed on one of the support 106 and the bracket 104, the locking column 152 is disposed on the other of the support 106 and the bracket 104, and the locking seat 150 cooperates with the locking column 152 to lock or unlock the bracket 104.

For example, the locking socket 150 may be disposed on a side of the bracket 104 facing the support 106 and the locking post 152 may be disposed on the support 106. In addition, in order to accurately fit the locking seat 150 and the locking column 152, the locking seat 150 and the locking column 152 are disposed opposite to each other. The locking device may use an elastic self-locking device, and after the user presses the bracket 104 to a certain position, the clamping column 152 disposed on the support 106 can be clamped to the base of the elastic self-locking device, so as to lock the bracket 104. At this time, the bracket 104 does not rebound, that is, the handle plate 102 can be stably maintained in the contracted state.

When the handle plate 102 needs to be pulled out, the support 106 on the support 104 can be pulled out from the clamping column 152 on the support 106 by pressing the handle plate 102 or pressing the support 104 downwards through the swing rod 146, at this time, the clamping column 152 is separated from the locking seat 150 of the elastic self-locking device, and the support 104 is switched from the contraction state to the extension state under the action of the coil spring.

The locking device can provide convenience for users, and the situation that the coil spring ejects the handle plate 102 when the handle plate 102 is in a contraction state is avoided.

In this implementation, the detecting assembly further includes a fifth detecting member 154, and the fifth detecting member 154 is adapted to generate a fifth detecting signal for controlling the second driving member 144 to stop and reverse after detecting that the swing link 146 separates the locking socket 150 from the clamping post 152.

Specifically, the swing link 146 is mounted on the second driving element 144, a first end of the swing link 146 is pressed against an upper end surface of the bracket 104, when the second driving element 144 drives the swing link 146 to rotate, the swing link 146 can press the bracket 104 downward, and meanwhile, in order to reduce the friction force between the swing link 146 and the bracket 104, a roller 147 is further disposed at an end of the swing link 146 contacting the bracket 104.

Specifically, after the second driving element 144 receives the first detection signal representing that the human body is approaching, the second driving element 144 acts and drives the swing rod 146 to rotate downwards, the first end of the swing rod 146 presses the bracket 104 in the process of rotating downwards, at this time, the locking seat 150 is separated from the clamping column 152, after the fifth detection element 154 is triggered by the bracket 104, a fifth detection signal used for controlling the second driving element 144 to stop and reverse is generated, the second driving element 144 stops and reverses based on the fifth detection signal, at this time, because the coil spring is always in a compression state, the coil spring can switch the handle plate 102 from a contraction state to an extension state. When the handle plate 102 moves to the extended state, the second end of the swing link 146 triggers the second detection element 128, and the second driving element 144 stops or stops with a delay after the second driving element 144 receives the second detection signal. When the second driving element 144 receives a first detection signal sent by the first detection element and representing that the human body leaves, the second driving element 144 acts and reverses to drive the swing rod 146 to act to switch the handle plate 102 from the extending state to the retracting state; when the locking seat 150 and the locking post 152 are engaged with each other, the second driving member 144 is stopped, and the handle plate 102 is in a retracted state.

In this case, during the process of switching the handle plate 102 from the retracted state to the extended state, the first end of the swing link 146 may be always in contact with the bracket 104, so as to control the ejection speed of the handle plate 102 by controlling the rotation speed of the second driving element 144, so that the ejection speed of the handle plate 102 is controllable, and thus a better pop-up experience is obtained.

In addition, when a power failure occurs, the second driving member 144 is damaged, or the user needs to manually operate, the user can manually press the handle plate 102 downwards, and the purpose of unlocking the handle plate 102 from the support 106 can also be achieved. After the hand is loosened, the handle plate 102 can be popped up under the action of the torsion spring, and the door can be opened by pulling the handle plate 102 at the moment. After the door opening and closing operation is completed, the handle plate 102 is manually pressed downwards, and the handle plate 102 is locked in the locking seat 150 again, so that the handle plate 102 can be switched to the contraction state.

When the handle plate 102 is switched from the extended state to the retracted state, the user can be prevented from being injured by the handle plate 102 by setting the operation time after the second driving element 144 is started. Specifically, in the process that the handle plate 102 is switched to the contracted state, the second driving element 144 drives the swing rod 146 to rotate, the swing rod 146 presses the bracket 104 downwards, if the set time length is exceeded, the locking seat 150 on the bracket 104 is not clamped with the clamping column 152 on the support 106, the bracket 104 is clamped by a foreign matter, the second driving element 144 stops automatically, at the moment, the handle plate 102 only receives the elastic restoring force provided by the coil spring, namely, the coil spring can switch the handle plate 102 to the extended state again, and the handle plate 102 is ejected again, so that the purpose of preventing the handle plate 102 from injuring a user by clamping can be achieved, and meanwhile, the damage of the second driving element 144 can be avoided.

It should be noted that, in this implementation, the control signal for switching the handle plate 102 from the retracted state to the extended state, and the control signal for switching the handle plate 102 from the extended state to the retracted state are both controlled by the first detection signal generated by the first detection element.

Referring to fig. 1 and 2, a locker according to a second aspect of the present invention includes the above-described door assembly.

According to the storage cabinet of the second aspect of the invention, by arranging the door assembly, the overall structure of the storage cabinet can be simplified, and the surface of the door body 100 of the storage cabinet is flat. Meanwhile, the technical effects of the door assembly provided by the embodiment of the first aspect of the invention are also provided in the storage cabinet provided by the embodiment of the second aspect of the invention, and are not repeated herein.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A door assembly, comprising:

the driving device is arranged on the door body and is suitable for driving the handle plate to be switched between an extending state and a contracting state based on the detection signal; in the extending state, the handle plate extends out of the door body, and in the contracting state, the handle plate contracts in the door body to shield the mounting groove;

the bracket is connected with the door body and the handle plate;

the locking device comprises a locking seat and a clamping column which are correspondingly arranged, and the locking seat is matched with the clamping column to lock or release the bracket;

the driving device includes:

the elastic piece is used for driving the handle plate to be switched from the contraction state to the extension state;

the second driving piece is arranged on the door body;

the swing rod is connected with the second driving piece, and the first end of the swing rod is suitable for pressing the upper end face of the bracket so as to switch the handle plate from the extending state to the contracting state;

the detection assembly further comprises a second detection piece and a fifth detection piece;

the second detection piece is suitable for generating a second detection signal for controlling the second driving piece to stop when the handle plate is detected to move to the extending state;

2. The door assembly as claimed in claim 1, further comprising a support base mounted to the door body, wherein the first end of the support base is adapted to be coupled to the support base by a hinge structure, and wherein the handle plate is disposed at the second end of the support base.

3. The door assembly as claimed in claim 2, wherein the hinge structure includes a hinge hole and a hinge shaft which are engaged with each other, the hinge hole being provided at one of the bracket and the holder, the hinge shaft being provided at the other of the bracket and the holder; or,

4. The door assembly as claimed in claim 2, wherein the handle plate and/or the bracket are adapted to be snapped into the seat by a retaining structure to restrict the handle plate and the bracket from being removed from the seat.

5. The door assembly as claimed in claim 4, wherein the limiting structure comprises a limiting snap-gauge provided on the support, a first end of the limiting snap-gauge being connected with the support, and a second end of the limiting snap-gauge being formed with a snap plate; in the extended state, the handle plate and/or the bracket are/is suitable for being clamped on the side face, facing the support, of the clamping plate.

6. The door assembly as claimed in claim 4, wherein the position-restricting structure further comprises a position-restricting projection formed at an edge of the handle plate and/or the bracket; in the extending state, the limiting bulge is abutted to the edge of the support.

7. The door assembly as claimed in claim 2, wherein the holder is formed with a receiving groove for mounting the bracket, the bracket is formed with a guide block, and a first guide groove and a second guide groove are formed at a side wall of the receiving groove to be oppositely disposed; in the extended state, the guide block is located in the first guide groove, and in the retracted state, the guide block is located in the second guide groove.

8. The door assembly according to any one of claims 2 to 7, wherein the detection assembly comprises a first detection member, the first detection member is mounted on the door body, the first detection member is used for detecting physical signs and generating a first detection signal, and the driving device drives the handle plate to be switched from the extended state to the retracted state based on the first detection signal; and/or the presence of a gas in the gas,

9. The door assembly according to claim 8, wherein the detection assembly further comprises a second detection member and a third detection member, the second detection member and the third detection member being mounted to the door body;

10. The door assembly as claimed in claim 8, wherein the elastic member is a torsion spring, and both ends of the torsion spring are respectively connected with the holder and the bracket to switch the handle plate from the contracted state to the extended state.

11. The door assembly as claimed in claim 10, wherein the locking seat is provided at one of the holder and the bracket, and the catching column is provided at the other of the holder and the bracket.

12. The door assembly according to any one of claims 1 to 7, wherein the number of the door bodies is at least two, and the handle plates on two adjacent door bodies are arranged flush with each other or staggered with each other.

13. A stowage bin including a door assembly as claimed in any one of claims 1 to 12.

14. A cabinet according to claim 13, wherein the cabinet is a refrigerator, cupboard or showcase.