CN216617232U - 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.

SUMMERY OF THE UTILITY MODEL

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 a first end and a second end opposite to each other, 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 mount 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 is provided with a strip-shaped hole extending along the extending direction of the second end and the hinge arm is provided with a switching part, and the switching 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 assembly 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 fitting 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 further comprises a hinge shell, wherein the hinge shell covers the hinge seat and is provided with an avoiding groove for the connecting arm to move.

In addition, an embodiment of the present application further provides a household appliance, which includes a box body, a door body and the hinge assembly according to any one of the above embodiments, wherein the box body has an opening, the door body is rotatably connected to the opening, the hinge arm is disposed on the door body, and the hinge seat is disposed on the box body.

Above-mentioned hinge subassembly, when 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 the second angle from the first angle, the hinge arm is driven by the driving part, the driving part drives the hinge arm to rotate to the door body to be opened to a certain angle, and at the moment, the door body part 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 expands the angle between the hinge arm and the hinge seat. 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 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 "central," "longitudinal," "transverse," "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 to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting 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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean 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. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single 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 resistance is not 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. One part of the circumference of the driven gear is provided with external teeth meshed with the transmission toothed belt, and the other part of the circumference of the driven gear is smooth. 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 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 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 move continuously to the third position. During the movement of the link arm 131 from the second position to the third position, the power source 132 does not apply a driving force to the link arm 131, and does not restrict the movement of the link arm 131.

Wherein the connecting arm 131 can move in a telescopic manner. Take linking arm 131 to make concertina movement as an example, linking arm 131 includes first circular arc arm and second circular arc arm, and first circular arc arm cup joints with the second circular arc arm, and just first circular arc arm connects in hinge seat 110, and the second circular arc arm connects in hinge arm 120. The power source 132 comprises a driving gear, the driving gear can be arranged on the first arc arm, a connecting portion is arranged on the second arc arm, the extending direction of the connecting portion and the extending directions of the first arc arm and the second arc arm are the same arc direction, the connecting portion is provided with a rack segment and a smooth segment, the rack segment is meshed with the driving gear, when the driving gear rotates, the connecting portion is pushed by the rack segment to move along the extending direction, the second arc arm is pushed to move along the extending direction (so that the connecting arm 131 extends), the second arc arm can move along the first arc arm, the length of the connecting arm 131 is lengthened, and the hinged arm is pushed to rotate (at the moment, the connecting arm 131 moves from the first position to the second position, and the hinged arm 120 rotates from the first angle to the second 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 does not 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.

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 arm 131 is connected to the hinge base 110 and the hinge arm 120 in two specific ways.

First, a first end of the link arm 131 is movably connected to the hinge base 110, a second end of the link arm 131 is rotatably connected to the hinge arm 120, and the second end of the link 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, a first end of the link arm 131 is movably connected to the hinge base 110, a 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 link arm 131, the link arm 131 applies a thrust to the hinge arm 120 to rotate the hinge arm 120, and meanwhile, the first end of the link arm 131 rotates to gradually reduce the angle between the link 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 link 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 adapter 1311, and the adapter 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 link arm 131 is movable with respect to the hinge arm 120, and the first end of the link 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, 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 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 strip-shaped hole 121 may be a through hole or a groove. The adapter 1311 may be a pin or the like. The method is not particularly limited.

In particular, in the embodiment, 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 link arm 131 is between the first position and the second position, pushrod 1321 abuts link arm 131, and when link arm 131 is between the second position and the third position, pushrod 1321 is disconnected from link 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.

Specifically, 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 is applied to the coupling portion 1312. At this time, the driving force provided by the power source 132 acts on the coupling portion 1312, so that the coupling portion 1312 moves along the guide portion 111, thereby moving the connecting arm 131.

It should be noted that, when the second end of the link arm 131 is movable relative to the hinge arm 120 and the first end of the link arm 131 is not rotatable relative to the hinge base 110, the coupling portion 1312 may be fixedly connected or rotatably connected to the first end of the link arm 131. When the second end of the link arm 131 is immovable relative to the hinge arm 120 and the first end of the link arm 131 is rotatable relative to the hinge base 110, the mating portion 1312 is rotatably connected to the first end of the link 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 poles, 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 seat 110 and connected to the hinge arm 120, and is used for providing a buffering force for the hinge arm 120 to have a reverse movement trend when the hinge arm 120 rotates, so as to avoid a large impact in an 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 link arm 131 and stores a deformation force that urges the link arm 131 to return to the first position during the movement of the link arm 131 in the first direction. During the door opening stage, when the link arm 131 moves along 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 link arm 131 to accelerate the link arm to return to the first position, thereby assisting the door body 202 to close.

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 that is away from the connecting arm 131.

In actual operation, the connecting arm 131 drives the mounting base 150 to move when moving along the first direction, and since the limiting portion is fixed, the elastic element 140 is gradually compressed along with the movement of the mounting base 150, and the elastic element 140 stores deformation force in the compression process. When the connecting arm 131 moves in the opposite direction, the mounting base 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. The limiting part may also be of other structures, which are not described herein.

Preferably, referring to fig. 2, one end of the mounting base 150 connected to the connecting arm 131 has a slot 151, and the first connecting shaft of the matching connection 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 a receiving cavity, so that the first end of the connecting arm 131 can be received in the receiving cavity, and the hinge assembly 100 is more beautiful. Specifically, the portion of the second connecting shaft extending out of the accommodating cavity is connected to the power source 132, so that the power source 132 is located outside the accommodating 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.

The hinge assembly 100 that provides in the embodiment of this application, door body 202 need not set up external handle on door body 202 through its when connecting in box 201, and the user operation is provided after promoting hinge arm 120 by linking arm 131 and driving door body 202 to open and shut to certain angle, and door body 202 can open the opening completely under user's effect, has avoided setting up on door body 202 and has exposed the danger that the handle brought.

Based on the same inventive concept, referring 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 this time, 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 and expands an angle between the hinge arm 120 and the hinge seat 110 along with the rotation of the door body 202 (the user acts on the door body 202). 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 the 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 above-mentioned 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. Wherein, the sensor can be a gesture sensor, a touch sensor and 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 according to claim 2, characterized in that said connecting arm (131) has a first end and a second end connected to each other, said first end being movably connected to said hinge seat (110) along a first direction, said second end being rotatably connected to said 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. Hinge assembly according to claim 3, characterized in that one of said second end and said hinge arm (120) has a strip hole (121) extending in the direction of extension thereof, and the other of said second end and said hinge arm (120) has an adapter (1311), said adapter (1311) being rotatably connected to said strip hole (121) and being movable along said strip hole (121) so that said second end is movable with respect to said hinge arm (120).

5. A hinge assembly according to 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 according to claim 5, characterized in that the power source (132) comprises a push rod (1321) which 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) is abutted to 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. A hinge assembly as claimed in claim 3 further comprising a resilient member (140), the resilient member (140) being connected to the connecting arm (131) and storing a deformation force urging the connecting arm (131) to return to the first position during movement of the connecting arm (131) in the first direction.

10. The hinge assembly according to 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 is limited at the limiting part and one end of the mounting seat (150) departing from the connecting arm (131).

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

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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