CN113279642A - Hinge assembly and household appliance - Google Patents

Abstract

The application relates to a hinge assembly and a household appliance. The hinge assembly includes a hinge base, a hinge arm, and a driving part. The hinge arm is hinged with the hinge seat, the hinge arm is arranged on a rotating path rotating relative to the hinge seat, and a first angle, a second angle and a third angle which are increased progressively are arranged between the hinge arm and the hinge seat. The driving part is connected with the hinge arm and is used for driving the hinge arm to rotate from the first angle to the second angle and allowing the hinge arm to rotate from the second angle to the third angle under the action of external force. Compared with the prior art, the door body is connected in the box through hinge subassembly in this application, need not set up external handle on the door body, drives the door body by the hinge arm and opens and shuts to supply the user operation behind the certain angle, and the opening can be opened completely to the door body under user's effect, has avoided setting up on the door body and has exposed the danger that the handle brought.

Description

Hinge assembly and household appliance

Technical Field

The application relates to the technical field of household appliances, in particular to a hinge assembly and a household appliance.

Background

The standard of living improves gradually, and people focus on diet culture and diet health more and more, and along with embedded domestic appliance (like steaming oven, dish washer, sterilizer etc.) increases gradually today, and kitchen life is more convenient, but the door handle of market domestic appliance is mostly external handle so that the manual door that opens, and external handle often can cause in the kitchen and collide with, and the family that has child in the family has more safe danger.

Disclosure of Invention

This application exposes the problem that has the potential safety hazard to current domestic appliance handle, has provided a hinge subassembly and domestic appliance, and this hinge subassembly and domestic appliance have the technical effect that can open the door automatically and do not need external handle.

A hinge assembly, comprising:

a hinge mount;

the hinge arm is hinged with the hinge seat; on a rotation path of the hinge arm rotating relative to the hinge seat, a first angle, a second angle and a third angle which are increased progressively are arranged between the hinge arm and the hinge seat; and

and the driving part is connected with the hinge arm and used for driving the hinge arm to rotate from the first angle to the second angle, and the driving part allows the hinge arm to rotate from the second angle to the third angle under the action of external force.

In one embodiment, the driving part includes a connecting arm connecting the hinge arm and the hinge base, and a power source, the connecting arm being configured to move synchronously during rotation of the hinge arm;

when the included angles between the hinge arms and the hinge seat are respectively a first angle, a second angle and a third angle, the connecting arms are respectively positioned at a first position, a second position and a third position of a self-movement path; the power source is used for providing driving force for enabling the connecting arm to move from the first position to the second position, and allowing the hinge arm to drive the connecting arm to move between the second position and the third position under the action of external force.

In one embodiment, the connecting arm has opposite first and second ends, the first end is movably connected to the hinge base along a first direction, and the second end is rotatably connected to the hinge arm; wherein the first end is further configured to be rotatable relative to the hinge base or the second end is further configured to be movable relative to the hinge arm.

In one embodiment, one of the second end and the hinge arm has a strip-shaped hole extending along the extending direction of the second end, and the other of the second end and the hinge arm has an adapter part, and the adapter part is rotatably connected to the strip-shaped hole and can move along the strip-shaped hole, so that the second end can move relative to the hinge arm.

In one embodiment, the power source and the connecting arm have a connected state and a disconnected state;

when the connecting arm is located between the first position and the second position, the power source is connected with the connecting arm, and when the connecting arm is located between the second position and the third position, the power source is disconnected with the connecting arm.

In one embodiment, the power source comprises a push rod which can stretch and contract along the first direction, and the push rod is positioned on one side of the connecting arm, which faces away from the hinge arm; when the connecting arm is located between the first position and the second position, the push rod is abutted to the connecting arm, and when the connecting arm is located between the second position and the third position, the push rod is disconnected from the connecting arm.

In one embodiment, the hinge base further comprises a matching part, the hinge base is provided with a guide part extending along the first direction, the matching part is connected to the first end and is movably arranged on the guide part along the first direction; the power source acts on the mating portion.

In one embodiment, the mating portion includes a first connecting shaft and a second connecting shaft, which are disposed in an intersecting manner, the guide portion is a guide slot extending along the first direction, and the first connecting shaft is connected to the first end and movably disposed in the guide slot; the power source acts on the second connecting shaft.

In one embodiment, the device further comprises an elastic member connected to the connecting arm and storing a deformation force urging the connecting arm to return to the first position during movement of the connecting arm in the first direction.

In one embodiment, the hinge device further comprises a mounting seat and a limiting part fixedly arranged relative to the hinge seat, the mounting seat is movably arranged on the hinge seat, and the mounting seat is connected with the connecting arm; the elastic piece is sleeved on the mounting seat and limited at the limiting part and one end of the mounting seat departing from the connecting arm.

In one embodiment, the hinge device further comprises a hinge shell, wherein the hinge shell covers the hinge seat and is provided with an avoiding groove for moving the connecting arm.

In addition, this application embodiment still provides a domestic appliance, including box, door body and as above any embodiment the hinge subassembly, the box has an opening, door body rotationally connects in the opening part, the hinge arm is located the door body, the hinge seat is located the box.

Above-mentioned hinge subassembly, during actual operation, along with the angle between hinge arm and the hinge seat constantly increases, the hinge arm drives the door body and opens the opening gradually. When the hinge arm rotates to a second angle from a first angle, the hinge arm is driven by the driving part, the driving part drives the hinge arm to rotate to a certain angle when the door body is opened, and at the moment, the door body partially opens the opening and provides a space for a user to operate. When a user operates the opening part and acts on the door body, the hinge is driven to rotate between the second angle and the third angle, and the driving part does not apply acting force to the hinge arm in the process, so that the hinge arm continues to rotate along with the rotation of the door body (the user acts on the door body) and the angle between the hinge arm and the hinge seat is enlarged. Compared with the prior art, when the door body is connected to the box body through the hinge assembly in the embodiment, an external handle does not need to be arranged on the door body, the door body is driven by the hinge arm to open and close to a certain angle for user operation, the door body can completely open the opening under the action of a user, and the danger caused by the fact that the exposed handle is arranged on the door body is avoided.

Drawings

FIG. 1 is a schematic view of a hinge base according to an embodiment of the present application;

FIG. 2 is an exploded schematic view of the hinge base shown in FIG. 1;

FIG. 3 is a schematic view of a partial structural assembly of the hinge base shown in FIG. 2;

fig. 4 is a schematic structural diagram of a household appliance in an embodiment of the present application;

fig. 5 is a partial schematic view of the household appliance shown in fig. 4.

Description of reference numerals:

a hinge assembly 100; a hinge base 110; a guide portion 111; a hinge arm 120; a strip-shaped hole 121; a drive unit 130; a connecting arm 131; an adapter 1311; a mating portion 1312; a power source 132; a push rod 1321; an elastic member 140; a mount 150; a card slot 151; a hinge case 160; an avoidance groove 161; a household appliance 200;

a case 201; a door body 202.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, 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.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The hinge assembly 100 provided by the embodiment of the application is mainly applied to a door opening structure, the door opening structure comprises a box body 201 and a door body 202, the box body 201 is provided with an opening, and the door body 202 is rotatably connected to the opening of the box body 201 through the hinge assembly 100 and can open or close the opening. Specifically, the hinge includes a hinge arm 120 and a hinge base 110, the hinge base 110 is disposed on the cabinet 201, the hinge arm 120 is disposed on the door body 202, and the hinge arm 120 is rotatably connected to the hinge base 110 to support the door body 202 to open or close the opening. The hinge subassembly 100 of this application mainly is to but not the limit is applied to the structure of opening the door that does not have external handle, provides hinge subassembly 100 through this application and opens the space of the automatic certain angle in order to provide the user operation with the door body 202, then supplies the user to open the door by oneself to the biggest angle, need not external handle and also can open the door, can solve the dangerous problem of external handle.

The structure of the hinge assembly 100 provided in the present application will be described in detail below.

Referring to fig. 1, a hinge assembly 100 according to an embodiment of the present disclosure includes a hinge base 110, a hinge arm 120, and a driving portion 130. The hinge arm 120 is hinged to the hinge base 110, the hinge arm 120 is on a rotation path relative to the hinge base 110, and the hinge arm 120 and the hinge base 110 have a first angle, a second angle and a third angle which are increased. The driving part 130 is connected to the hinge arm 120 and is used to drive the hinge arm 120 to rotate from the first angle to the second angle and allow the hinge arm 120 to rotate from the second angle to the third angle under the action of an external force.

In the hinge assembly 100, during actual operation, as the angle between the hinge arm 120 and the hinge base 110 is increased continuously, the hinge arm 120 drives the door body 202 to gradually open the opening. When the hinge arm 120 rotates from the first angle to the second angle, the hinge arm is driven by the driving part 130, the driving part 130 drives the hinge arm 120 to rotate until the door body 202 is opened to a certain angle, and at the moment, the door body 202 partially opens the opening and provides a space for a user to operate. When a user operates the opening portion and acts on the door body 202, the hinge is driven to rotate between the second angle and the third angle, and in the process, the driving portion 130 does not apply acting force to the hinge arm 120, so that the hinge arm 120 continues to rotate along with the rotation of the door body 202 (the user acts on the door body 202) and expands the angle between the hinge arm and the hinge base 110. Compared with the prior art, when the door body 202 is connected to the box body 201 through the hinge assembly 100 in the embodiment, an external handle does not need to be arranged on the door body 202, the hinge arm 120 drives the door body 202 to open and close to a certain angle for a user to operate, the door body 202 can completely open an opening under the action of the user, and the danger caused by the fact that the exposed handle is arranged on the door body 202 is avoided.

The driving part 130 is configured such that no resistance is generated to the stroke of the hinge arm 120 during the rotation of the hinge arm 120 between the second angle and the third angle. To achieve this, in one example, the hinge arm 120 is provided with a driven gear, and the driving part 130 includes a motor, a driving gear, and a transmission toothed belt, wherein the motor is in transmission connection with the driving gear, the driving gear is in transmission connection with the driven gear through the transmission toothed belt, and the transmission toothed belt moves under the action of the driving gear. The driven gear is provided with external teeth meshing with the transmission toothed belt on one part of the circumference and is provided with smooth on the other part. When the hinge arm 120 rotates from the first angle to the second angle, the external teeth of the driven gear engage with the transmission gear belt, and the driven gear drives the hinge arm 120 to rotate under the driving of the transmission gear belt. When the hinge arm 120 rotates from the second angle to the third angle, the motor stops (the transmission toothed belt remains stationary) and the smooth portion of the driven gear comes into contact with the transmission toothed belt, and when the user acts on the door body 202, the hinge arm 120 can drive the driven gear to rotate relative to the transmission toothed belt without being limited by the transmission toothed belt. Of course, the driving unit 130 may adopt the configuration of the embodiment described below to achieve the above object.

Referring to fig. 1, 2 and 3, in some embodiments, the driving part 130 includes a connecting arm 131 and a power source 132, the connecting arm 131 connects the hinge arm 120 and the hinge base 110, and the connecting arm 131 is configured to move synchronously during the rotation of the hinge arm 120. When the included angle between the hinge arm 120 and the hinge base 110 is divided into a first angle, a second angle, and a third angle, the connecting arm 131 is located at the first position, the second position, and the third position of the movement path of the connecting arm 131, and the power source 132 is configured to provide a driving force for moving the connecting arm 131 from the first position to the second position, and allow the hinge arm 120 to drive the connecting arm 131 to move between the second position and the third position under the action of an external force.

In this embodiment, when the connecting arm 131 moves from the first position to the second position under the driving of the power source 132, the connecting arm 131 actively pushes the hinge arm 120 to rotate from the first angle to the second angle, and at this time, the hinge arm 120 drives the door body 202 to open a partial opening and provide a space for a user to operate. When the user operates to open all the openings of the door body 202, the door body 202 drives the hinge arm 120 to rotate, and the connecting arm 131 is driven by the hinge arm 120 to move continuously to the third position. During the movement of the connecting arm 131 from the second position to the third position, the power source 132 does not apply a driving force to the connecting arm 131, and does not restrict the movement of the connecting arm 131.

Wherein the connecting arm 131 can move in a telescopic manner. Taking the connection arm 131 as an example of the telescopic motion, the connection arm 131 includes a first arc arm and a second arc arm, the first arc arm is sleeved with the second arc arm, the first arc arm is connected to the hinge base 110, and the second arc arm is connected to the hinge arm 120. Power supply 132 includes the driving gear, the driving gear can be located on first circular arc arm, be equipped with connecting portion on the second circular arc arm, the extending direction of connecting portion is the same circular arc direction with the extending direction of first circular arc arm and second circular arc arm, connecting portion have rack section and smooth section, rack section and driving gear meshing, promote connecting portion through the rack section and remove along self extending direction when the driving gear rotates, thereby promote second circular arc arm and remove (make linking arm 131 extend) along self extending direction, make second circular arc arm can remove along first circular arc arm, make the length of linking arm 131 lengthen, and then promote the articulated arm and rotate (at this moment, linking arm 131 moves to the second position from the first position, hinge arm 120 rotates the second angle from the first angle). And after the driving gear is meshed with the rack section, the driving gear is connected with the smooth section, and the driving gear stops rotating. When the hinge arm 120 is controlled to rotate from the second angle to the third angle, the hinge arm 120 drives the second arc arm to move continuously along the moving direction of the second arc arm, the smooth section is smoothly connected with the driving gear, the friction force is small, and the power source 132 cannot block the movement of the second arc arm. Conversely, when the hinge base 110 is controlled to rotate from the third position to the first position, the connecting arm 131 retracts. Of course, the movement of the connecting arm 31 can also take the form of the solution provided in the following embodiments.

Referring to fig. 1, 2 and 3, in an embodiment, the connecting arm 131 has a first end and a second end in the extending direction, the first end is movably connected to the hinge base 110 along the first direction, the second end is rotatably connected to the hinge arm 120, wherein the first end is further configured to be rotatable relative to the hinge base 110, or the second end is further configured to be movable relative to the hinge arm 120.

At this time, the first end has a first position, a second position and a third position in the first direction, the power source 132 is only used for providing a driving force to move the first end from the first position to the second position, so that the connecting arm 131 pushes the hinge arm 120 to rotate from the first angle to the second angle, and when the hinge arm 120 rotates between the second angle and the third angle, the connecting arm 131 is driven to move between the second position and the third position.

In this embodiment, the first direction is a direction from the first position to the second position (third position, position), and has directivity.

In this embodiment, when the connecting arm 131 is driven by the power source 132 to move from the first position to the second position in the first direction, the connecting arm 131 actively pushes the hinge arm 120 to rotate from the first angle to the second angle, and at this time, the hinge arm 120 drives the door body 202 to open a portion of the opening, and a space for a user to operate is provided. When the user operates to open all the openings of the door body 202, the door body 202 drives the hinge arm 120 to rotate, and the connecting arm 131 is driven by the hinge arm 120 to continue to move forward to the third position in the first direction. During the movement of the connecting arm 131 from the second position to the third position, the power source 132 does not apply a driving force to the connecting arm 131, and does not restrict the movement of the connecting arm 131. At this time, the hinge base 110 is driven to rotate by the movement of the connecting wall, so that the structure is simple and the control is convenient.

It should be noted that, in the present embodiment, the connection between the connection arm 131 and the hinge base 110 and the hinge arm 120 includes two specific connection manners.

First, a first end of the connecting arm 131 is movably connected to the hinge base 110, a second end of the connecting arm 131 is rotatably connected to the hinge arm 120, and the second end of the connecting arm 131 and the hinge arm 120 can move relatively. At this time, in the moving process of the connecting arm 131, the hinge arm 120 is rotated by the pushing force applied to the hinge arm 120 by the connecting arm 131, and at the same time, the connecting arm 131 moves along the hinge arm 120 (or the hinge arm 120 moves relative to the connecting arm 131) to change the position of the connection between the second end of the connecting arm 131 and the hinge arm 120, so as to ensure that the distance between the connection between the second end of the connecting arm 131 and the hinge arm 120 and the first end of the connecting arm 131 is kept constant, so as to prevent the connecting arm 131 from limiting the rotation of the hinge arm 120 by the length thereof.

Secondly, the first end of the link arm 131 is movably connected to the hinge base 110, the second end of the link arm 131 is rotatably connected to the hinge arm 120, and the first end of the link arm 131 is rotatable relative to the hinge base 110. At this time, in the moving process of the connecting arm 131, the hinge arm 120 is rotated by the pushing force applied to the hinge arm 120 by the connecting arm 131, and meanwhile, the first end of the connecting arm 131 is rotated to gradually reduce the angle between the connecting arm 131 and the hinge base 110, so as to adapt to the increasing angle between the hinge arm 120 and the hinge base 110, and prevent the connecting arm 131 from limiting the rotation of the hinge arm 120 by its own length.

Referring to fig. 1, 2 and 3, in an embodiment, one of the second end of the connecting arm 131 and the hinge arm 120 has a strip-shaped hole 121 extending along the extending direction thereof, the other of the second end of the connecting arm 131 and the hinge arm 120 has an adaptor 1311, and the adaptor 1311 is rotatably connected to the strip-shaped hole 121 and can move along the strip-shaped hole 121, so that the second end can move relative to the hinge arm

At this time, the second end of the connecting arm 131 is movable with respect to the hinge arm 120, and the first end of the connecting arm 131 is non-rotatable with respect to the hinge base 110.

The extending direction of the strip-shaped hole 121 is the same as the extending direction of the connecting arm 131 or the hinge arm 120 itself, and the strip-shaped hole 121 is disposed in the hinge arm 120, and the adapter 1311 is disposed in the connecting arm 131 for illustration. The adaptor 1311 is rotatably and movably connected to the inside of the strip hole 121. When the connecting arm 131 moves and pushes the hinge arm 120 to rotate, the second end of the connecting arm 131 is rotatably connected to the hinge arm 120 through the adapter 1311 so that the hinge arm 120 can rotate, and meanwhile, since the length of the connecting arm 131 is not variable, the second end of the connecting arm 131 also moves along the strip-shaped hole 121 through the adapter 1311 so as to change the position of the adapter 1311 on the hinge arm 120 to adapt to the length of the connecting arm 131.

It is understood that the hinge arm 120 has an extending direction, and the extending direction of the hinge arm 120 is a radial direction when it rotates along the hinge base 110. One end of the hinge arm 120 in the extending direction thereof may be connected to the hinge base 110.

The bar-shaped hole 121 may be a through hole or a groove. The adapter 1311 may be a pin or the like. And is not particularly limited.

In particular embodiments, the power source 132 and the connecting arm 131 have a connected state and a disconnected state, and when the connecting arm 131 is located between the first position and the second position, the power source 132 is connected to the connecting arm 131, and when the connecting arm 131 is located between the second position and the third position, the power source 132 is disconnected from the connecting arm 131.

In the present embodiment, the power source 132 is connected to the connecting arm 131 to be able to provide a driving force to the connecting arm 131 when the connecting arm 131 is between the first position and the second position. When the connecting arm 131 is in the second and third positions, the power source 132 is open to the end of the connecting arm 131 to allow the connecting arm 131 to follow the rotation of the hinge arm 120. In this manner, the power source 132 need not follow the connecting arm 131 between the second position and the third position, which helps to simplify the structure and control of the power source 132.

In order to disconnect the power source 132 from the connecting arm 131 when the connecting arm 131 is in the second position, referring to fig. 1, 2 and 3, in a preferred embodiment the power source 132 comprises a push rod 1321 which is telescopic in a first direction, the push rod 1321 being located on a side of the connecting arm 131 facing away from the hinge arm 120. When connecting arm 131 is located between the first position and the second position, push rod 1321 abuts connecting arm 131, and when connecting arm 131 is located between the second position and the third position, push rod 1321 is disconnected from connecting arm 131.

At this time, the push rod 1321 applies a pushing force to move the connecting arm 131 from the first position to the second position, and then the push rod 1321 does not act, and the connecting arm 131 continues to move forward under the driving of the hinge arm 120. When the connecting arm 131 is driven by the hinge arm 120 (when the user closes the door) to return from the third position to the second position, the connecting arm 131 contacts with the push rod 1321, and as the user continues to close the door (or the user closes the door under the driving of the elastic member 140 in the following embodiments), the connecting arm 131 pushes the push rod 1321 to retract to the initial position, which is simple in structure and good in reliability.

Of course, the following example scheme may be adopted in other embodiments. The output of the power source 132 has a motorized jaw that grips the connecting arm 131 when the connecting arm 131 is between the first and second positions and releases the connecting arm 131 when the connecting arm 131 is in the second and third positions.

In an embodiment, referring to fig. 2 and 3, the hinge assembly 100 further includes a coupling portion 1312, the hinge base 110 has a guide portion 111 extending along the first direction, the coupling portion 1312 is connected to the first end of the connecting arm 131 and movably disposed on the guide portion 111 along the first direction, and the power source 132 acts on the coupling portion 1312. At this time, the driving force provided by the power source 132 acts on the fitting portion 1312, so that the fitting portion 1312 moves along the guide portion 111, and the connecting arm 131 moves.

It should be noted that, when the second end of the connecting arm 131 is movable relative to the hinge arm 120, and the first end of the connecting arm 131 is not rotatable relative to the hinge base 110, the coupling portion 1312 and the first end of the connecting arm 131 may be connected in a fixed or rotatable manner. When the second end of the connecting arm 131 is immovable relative to the hinge arm 120 and the first end of the connecting arm 131 is rotatable relative to the hinge base 110, the coupling portion 1312 is rotatably connected to the first end of the connecting arm 131.

Further, the coupling portion 1312 includes a first coupling shaft and a second coupling shaft disposed to intersect each other, the guide portion 111 is a guide groove extending in the first direction, the first coupling shaft is movably disposed in the guide groove, and the power source 132 acts on the second coupling shaft. At this time, the driving force provided by the power source 132 acts on the second connecting shaft, and the second connecting shaft drives the first connecting shaft to move along the guide groove, thereby realizing the movement of the connecting arm 131. So designed, the power source 132 can be disposed outside the hinge base 110, which facilitates the subsequent disposition of the elastic member 140 inside the hinge base 110. It should be noted that in the embodiment of the present application, the connecting arm 131 may be a straight rod, an arc rod or other opposite-shaped rod, and has no limitation on the structure. Preferably, referring to fig. 2, the connecting arm 131 includes a first rod segment and a second rod segment connected in sequence, wherein an end of the first rod segment facing away from the second rod segment is a first end of the connecting arm 131, an end of the second rod segment facing away from the first rod segment is a second end of the connecting arm 131, the first rod segment is a straight segment, and the second rod segment is an arc segment. At this time, since the first rod segment is a straight segment (straight along the first direction), the first end can move more stably when moving along the hinge base 110. The second rod section is an arc-shaped section (tangent to the hinge arm 120), which can avoid the hinge arm 120 from having a large rotation range, and is more beautiful.

It should be noted that the hinge assembly 100 further includes a damper (not shown), where the damper is disposed on the hinge base 110 and connected to the hinge arm 120, and is used to provide a buffering force for the hinge arm 120 to have a tendency of reverse movement when the hinge arm 120 rotates, so as to avoid a large impact during the opening and closing process of the door body 202 when the hinge arm 120 drives the door body 202 to rotate. The damper may be a damping structure in an existing damping hinge, and the structure of the damper is not particularly limited in this application.

In some embodiments, referring to fig. 2 and 3, the hinge assembly 100 further includes an elastic member 140, the elastic member 140 is coupled to the connecting arm 131 and stores a deformation force urging the connecting arm 131 to return to the first position during the movement of the connecting arm 131 in the first direction. During the door opening stage, when the connecting arm 131 moves in the first direction, the elastic member 140 is pulled or compressed to store the deformation force, and during the door closing stage, the deformation force of the elastic member 140 acts on the connecting arm 131 to accelerate it back to the first position, thus helping to close the door body 202.

Specifically, referring to fig. 2 and 3, the hinge assembly 100 further includes a mounting base 150 and a limiting portion (not shown) fixedly disposed relative to the hinge base 110, the mounting base 150 is movably disposed on the hinge base 110, one end of the mounting base 150 is connected to the connecting arm 131, the elastic element 140 is sleeved on the mounting base 150, and the elastic element 140 is limited at the limiting portion and the end of the mounting base 150 away from the connecting arm 131.

In actual operation, the connecting arm 131 drives the mounting seat 150 to move when moving along the first direction, and since the limiting portion is fixed, the elastic member 140 is gradually compressed along with the movement of the mounting seat 150, and the elastic member 140 stores deformation force in the compression process. When the connecting arm 131 moves in the opposite direction, the mounting seat 150 moves in the opposite direction, and the deformation force stored in the elastic member 140 is gradually released and acts on the connecting arm 131 to accelerate the opposite movement of the connecting arm 131, so as to help the door body 202 to close.

The limiting part may be a limiting block disposed on the hinge base 110, and the limiting block has a hole for the mounting base 150 to penetrate through. The limiting part may also be of other structures, which are not described herein.

Preferably, referring to fig. 2, the end of the mounting base 150 connected to the connecting arm 131 has a slot 151, and the first connecting shaft of the mating portion 1312 is clamped in the slot 151. The first connecting shaft moves to drive the mount 150 to move. Of course, the slot 151 of the mounting seat 150 is also configured to be connected with the second connection shaft.

In some embodiments, referring to fig. 1, the hinge assembly 100 further includes a hinge housing 160, and the hinge housing 160 covers the hinge base 110 and has an escape slot 161 for moving the connecting arm 131. At this time, the link arm 131 moves in the escape groove 161 when rotating.

Further, the hinge housing 160 has a receiving cavity, the receiving cavity covers the hinge base 110, the first end of the connecting arm 131 is located in the receiving cavity, the power source 132 is located outside the receiving cavity and in the hinge housing 160, and the hinge arm 120 is rotatably connected to the hinge housing 160. At this time, the hinge housing 160 and the hinge base 110 enclose to form an accommodating cavity, so that the first end of the connecting arm 131 can be accommodated in the accommodating cavity, and the hinge assembly 100 is more attractive. Specifically, the portion of the second connecting shaft extending out of the receiving cavity is connected to the power source 132, so that the power source 132 is located outside the receiving cavity. Furthermore, the elastic member 140 and the mounting seat 150 are accommodated in the accommodating cavity, so that the appearance is attractive, and the installation of each component can be limited to a certain degree.

According to the hinge assembly 100 provided in the embodiment of the application, when the door body 202 is connected to the box body 201 through the hinge assembly, an external handle does not need to be arranged on the door body 202, the connecting arm 131 pushes the hinge arm 120 to drive the door body 202 to open and close to a certain angle for user operation, the door body 202 can be opened completely under the action of a user, and danger caused by the fact that the exposed handle is arranged on the door body 202 is avoided.

Based on the same inventive concept, please refer to fig. 4 and 5, an embodiment of the present application further provides a household appliance 200, which includes a box 201, a door 202, and the hinge assembly 100 provided in any of the above embodiments, wherein the box 201 has an opening, the door 202 is rotatably connected to the opening of the box 201, the hinge arm 120 is disposed on the door 202, and the hinge seat 110 is disposed on the box 201.

When the household appliance 200 is actually used, the hinge arm 120 drives the door body 202 to gradually open the opening along with the increasing angle between the hinge arm 120 and the hinge seat 110. When the hinge arm 120 rotates from the first angle to the second angle, the hinge arm is driven by the driving part 130, the driving part 130 drives the hinge arm 120 to rotate until the door body 202 is opened to a certain angle, and at the moment, the door body 202 partially opens the opening and provides a space for a user to operate. When a user operates the door body 202 through the opening portion, the hinge is driven to rotate between the second angle and the third angle, and in the process, the driving portion 130 does not apply an acting force to the hinge arm 120, so that the hinge arm 120 continues to rotate along with the rotation of the door body 202 (the user acts on the door body 202) and expands the angle between the hinge arm 120 and the hinge base 110. Compared with the prior art, when the door body 202 is connected to the box body 201 through the hinge assembly 100 in the embodiment, an external handle does not need to be arranged on the door body 202, the hinge arm 120 drives the door body 202 to open and close to a certain angle for a user to operate, the door body 202 can completely open an opening under the action of the user, and the danger caused by the fact that the exposed handle is arranged on the door body 202 is avoided.

Since the household appliance 200 includes the hinge assembly 100, the household appliance also has the other advantages, which are not described herein in detail.

Further, the household appliance 200 further comprises a controller (not shown) and a sensor (not shown), wherein the controller is in communication connection with the sensor and the driving portion 130, the sensor is used for sensing a door opening action of a user and generating a door opening signal, and the controller is used for controlling the driving portion 130 to act according to the door opening signal so as to drive the connecting arm 131 to move from the first position to the second position. Thereby facilitating the user to fully open the door body 202. The sensor may be a gesture sensor, a touch sensor, or the like.

Optionally, the household appliance 200 is a kitchen appliance. Such as refrigerators, ovens, steam boxes, steam-and-bake unions, disinfection cabinets, dishwashing cabinets, and the like. Preferably, the household appliance 200 is a steaming and baking all-in-one machine.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A hinge assembly, comprising:

a hinge base (110);

a hinge arm (120), the hinge arm (120) being hinged with the hinge base (110); the hinge arm (120) rotates relative to the hinge base (110) on a rotation path, and the hinge arm (120) and the hinge base (110) have a first angle, a second angle and a third angle which are increased; and

the driving part (130) is connected with the hinge arm (120) and used for driving the hinge arm (120) to rotate from the first angle to a second angle, and the driving part (130) allows the hinge arm (120) to rotate from the second angle to a third angle under the action of external force.

2. The hinge assembly of claim 1, wherein the driving part (130) comprises a connecting arm (131) and a power source (132), the connecting arm (131) connecting the hinge arm (120) and the hinge base (110), the connecting arm (131) being configured to move synchronously during rotation of the hinge arm (120);

when the included angles between the hinge arm (120) and the hinge base (110) are the first angle, the second angle and the third angle respectively, the connecting arm (131) is located at the first position, the second position and the third position of the self-motion path respectively; the power source (132) is used for providing a driving force for moving the connecting arm (131) from the first position to the second position, and allowing the hinge arm (120) to drive the connecting arm (131) to move between the second position and the third position under the action of an external force.

3. The hinge assembly of claim 2, wherein the connecting arm (131) has a first end and a second end connected to each other, the first end being movably connected to the hinge base (110) in a first direction, and the second end being rotatably connected to the hinge arm (120);

wherein the first end is further configured to be rotatable relative to the hinge base (110) or the second end is further configured to be movable relative to the hinge arm (120).

4. A hinge assembly as claimed in claim 3, wherein one of the second end and the hinge arm (120) has a strip-shaped hole (121) extending along its extension direction, and the other of the second end and the hinge arm (120) has an adapter portion (1311), the adapter portion (1311) being rotatably connected to the strip-shaped hole (121) and being movable along the strip-shaped hole (121) so that the second end is movable relative to the hinge arm (120).

5. A hinge assembly as claimed in claim 3 wherein the power source (132) and the connecting arm (131) have a connected state and a disconnected state;

the power source (132) is connected to the connecting arm (131) when the connecting arm (131) is between the first position and the second position, and the power source (132) is disconnected from the connecting arm (131) when the connecting arm (131) is between the second position and the third position.

6. The hinge assembly of claim 5, wherein the power source (132) comprises a push rod (1321) that is telescopic in the first direction, the push rod (1321) being located on a side of the connecting arm (131) facing away from the hinge arm (120); when the connecting arm (131) is located between the first position and the second position, the push rod (1321) abuts against the connecting arm (131), and when the connecting arm (131) is located between the second position and the third position, the push rod (1321) is disconnected from the connecting arm (131).

7. The hinge assembly of claim 3, further comprising a mating portion (1312), the hinge base (110) having a guide portion (111) extending in the first direction; the matching part (1312) is connected to the first end and movably arranged on the guide part (111) along the first direction; the power source (132) acts on the mating portion (1312).

8. The hinge assembly of claim 7, wherein the coupling portion (1312) includes a first coupling shaft and a second coupling shaft disposed to intersect each other, the guide portion (111) is a guide groove extending in the first direction, and the first coupling shaft is coupled to the first end and movably disposed in the guide groove; the power source (132) acts on the second connecting shaft.

9. The hinge assembly of claim 3, further comprising a resilient member (140), the resilient member (140) being coupled to the connecting arm (131) and storing a deformation force urging the connecting arm (131) back to the first position during movement of the connecting arm (131) in the first direction.

10. The hinge assembly of claim 9, further comprising a mounting seat (150) and a limiting portion fixedly arranged relative to the hinge seat (110), wherein the mounting seat (150) is movably arranged on the hinge seat (110), and the mounting seat (150) is connected with the connecting arm (131); the elastic piece (140) is sleeved on the mounting seat (150) and limited on the limiting part and one end of the mounting seat (150) departing from the connecting arm (131).

11. The hinge assembly of claim 3, further comprising a hinge housing (160), wherein the hinge housing (160) covers the hinge base (110) and has an escape groove (161) for the connection arm (131) to move.

12. A household appliance, characterized by comprising a box body (201), a door body (202) and a hinge assembly (100) as claimed in any one of claims 1 to 11, wherein the box body (201) is provided with an opening, the door body (202) is rotatably connected to the opening, the hinge arm (120) is arranged on the door body (202), and the hinge seat (110) is arranged on the box body (201).

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