CN217681149U - Household electrical appliance - Google Patents

Abstract

The utility model discloses a household appliance. A household appliance, comprising: the door body is provided with a door hook; the door body is rotatably connected with the bracket; the buffering assembly is installed on the support, the buffering assembly comprises a recoverable damper and a driving lever, the driving lever is rotationally connected with the support, the damper comprises a body and a rod piece, the body is fixed on the support, the rod piece is movably connected with the body, under the condition that the door body is closed, the door hook abuts against the driving lever to compress the rod piece, under the condition that the door body is opened, the door hook is separated from the driving lever, the damper is in a natural length state, and a gap is reserved between the rod piece and the driving lever. Among the above-mentioned domestic appliance, adopt recoverable attenuator, attenuator and drive lever no longer carry out the linkage, can omit the pendulum piece, reduce the use of spare part, simplify the motion process.

Description

Household electrical appliance

Technical Field

The utility model relates to the technical field of electrical apparatus, in particular to household appliance.

Background

In the related art, a household appliance may include a cavity in which a chamber is disposed and a door rotatably connected to the cavity to open or close the chamber. In order to reduce the noise of closing the door, the household appliance is provided with a slow-closing door interlocking structure, in the slow-closing door interlocking structure, a damper is connected with a driving lever through a movable swing block, and when the door is closed, the door body compresses the damper through the driving lever and the swing block to enable the damper to be shortened. When the door is opened, the damper is driven to automatically return to the original length through the driving lever and the swinging block. However, such a solution would make the slam-close door interlock more in parts and complex in its movement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a domestic appliance.

The utility model discloses embodiment's a domestic appliance, include:

the door body is provided with a door hook;

the door body is rotatably connected with the bracket;

a buffer assembly mounted on the bracket, the buffer assembly including a recoverable damper and a driving lever, the driving lever being rotatably connected to the bracket, the damper including a body fixed to the bracket and a rod movably connected to the body,

when the door body is closed, the door hook pushes against the driving lever to compress the rod piece,

under the condition that the door body is opened, the door hook is separated from the driving lever, the damper is in a natural length state, and a gap is reserved between the rod piece and the driving lever.

Among the above-mentioned domestic appliance, adopt recoverable attenuator, attenuator and drive lever no longer carry out the linkage, can omit the pendulum piece, reduce the use of spare part, simplify the motion process.

In some embodiments, the bracket is provided with a receiving slot, and the body is at least partially secured in the receiving slot.

In some embodiments, the bracket is provided with a limiting column, and the limiting column abuts against the driving lever and limits the rotation of the driving lever when the door body is closed.

In some embodiments, the buffer assembly further comprises a rotating lever, the bracket is provided with a switch, the rotating lever is rotatably connected with the bracket,

under the condition that the door body is closed, the door hook abuts against the rotating lever so that the rotating lever triggers the switch.

In some embodiments, the rotating lever includes a rotating arm and a contact arm, the rotating arm is rotatably connected to the bracket, the contact arm is connected to the rotating arm, the bracket has a slot, the contact arm is at least partially located in the slot, and the contact arm is used for triggering the switch.

In some embodiments, the driving lever comprises a first arm and a second arm which are spaced, during the closing process of the door body, the door hook abuts against the first arm after passing through the lower part of the second arm so as to drive the driving lever to rotate,

the contact arm is provided with a convex column,

the first arm is provided with a notch, and the convex column is avoided by the first arm through the notch in the closing process of the door body.

In some embodiments, the bracket is further provided with a stop that blocks at least a portion of the rotating arm.

In some embodiments, the top surface of the stopper includes a slope, and the slope is used to guide the door hook to abut against the contact arm during the closing process of the door body.

In some embodiments, the door hook comprises a lower door hook, the bracket is provided with a first switch, the switch comprises a second switch and a third switch,

the buffering assembly is configured to trigger the first switch under the driving of the lower door hook by the driving lever in the closing process of the door body, trigger the second switch under the driving of the lower door hook by the rotating lever and trigger the third switch later.

In some embodiments, the end of the hook has a first guide surface;

the driving lever comprises a first arm and a second arm which are spaced, a second guide surface is arranged on the side surface of the second arm, and in the process that the door body is closed, the first guide surface is matched and connected with the second guide surface, so that the tail end of the door hook bypasses behind the second arm, and the second arm blocks the door hook.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 to 4 are schematic structural diagrams of a part of a household appliance according to an embodiment of the present invention;

fig. 5 is an exploded schematic view of a household appliance according to an embodiment of the present invention;

fig. 6 to 8 are schematic structural views of parts of a household appliance according to an embodiment of the present invention;

fig. 9 to 10 are schematic views illustrating the assembly of the door hook and the door body according to the embodiment of the present invention;

fig. 11 to 15 are schematic structural views ofbase:Sub>A protective cover according to an embodiment of the present invention, wherein fig. 12 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 11;

fig. 16 to 21 are schematic structural views of a door hook according to an embodiment of the present invention, wherein fig. 17 is a cross-sectional view taken along line B-B of fig. 16;

fig. 22 to 27 are schematic structural views of a bracket according to an embodiment of the present invention, in which fig. 23 is a cross-sectional view taken along line C-C of fig. 22;

fig. 28 to 33 are schematic structural views of a driving lever according to an embodiment of the present invention, in which fig. 29 is a sectional view taken along line D-D of fig. 28;

fig. 34 to 35 are schematic structural views of a swash block according to an embodiment of the present invention;

fig. 36 to 39 are schematic structural views of a turning lever according to an embodiment of the present invention;

fig. 40 to 42 are schematic views illustrating a closed state of the household appliance (dual drive elastic member) according to the embodiment of the present invention;

fig. 43 is a schematic view of the driving lever according to the embodiment of the present invention after abnormal triggering;

fig. 44 to 45 are schematic partial structural views of a household appliance according to an embodiment of the present invention;

fig. 46 is a schematic view of a closed state (single driving elastic member) of the household appliance according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The disclosure herein provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 8, a household appliance 100 according to an embodiment of the present invention includes a door 12, a bracket 14, and a buffer assembly 16. The door body 12 has a door hook. The door 12 is rotatably connected to the bracket 14. The damping assembly 16 is mounted to the frame 14, the damping assembly 16 includes a return damper 18 and an actuating lever 20, the actuating lever 20 is pivotally connected to the frame 14, the damper 18 includes a body 22 and a rod 24, the body 22 is fixed to the frame 14, and the rod 24 is movably connected to the body 22.

In the case where the door body 12 is closed, the door hook abuts against the driving lever 20 to compress the rod member 24. When the door body 12 is opened, the door hook is separated from the driving lever 20, the damper 18 is in a natural length state, and a gap is formed between the rod 24 and the driving lever 20.

In the household appliance 100, the damper 18 capable of being restored is adopted, the damper 18 and the driving lever 20 are not linked any more, a swing block can be omitted, the use of parts is reduced, and the movement process is simplified. In addition, in the related technology, the used damper is a one-way damper which is connected with the swinging block, the one-way damper cannot automatically recover the original length, and the position size of the damper connected with the swinging block is small, so that the requirement on the performance of the damper is high, and the cost is high. The utility model discloses embodiment's domestic appliance 100 adopts recoverable attenuator 18, and after the external force of compression attenuator 18 withdrawed, recoverable attenuator 18 can resume original length automatically, need not to be connected with drive lever 20 through the pendulum piece, consequently, can adopt the attenuator 18 that the cost is lower, and then reduces the cost of spare part, easy to maintain.

Specifically, the household appliance 100 includes, but is not limited to, a microwave oven, an oven (including an electric oven, a microwave oven, and a micro-steaming and baking all-in-one machine), a steam box, a dishwasher, a sterilizer, and the like, and the household appliance 100 has a door 12. The embodiment of the present invention is illustrated by taking the household appliance 100 as a microwave oven, and the embodiment of the present invention is illustrated by taking the household appliance 100 as a microwave oven for convenience of understanding, which should not be construed as a limitation to the present invention.

The door body 12 can be a double-layer glass door body 12; the door 12 may be made of a glass for preventing the leakage of waves. One of the benefits of using a glass door 12 is that it facilitates a user to view the food within the appliance 100 from the outside. In addition, the outer surface of the door body 12 may be provided with a handle, which is convenient for a user to perform door opening and closing operations.

The material of the door hook can be all selected from metal materials or plastic materials, or the combination of different materials. The door hook is strip-shaped, the tail end of the door hook is provided with a hook-shaped part 86, and the hook-shaped part 86 can be conveniently clamped. The number of the hooks can be set according to actual conditions, for example, the number of the hooks can be single, two or more than two. In the embodiment of the present invention, the door hook includes two door hooks, i.e., an upper door hook 26 and a lower door hook 28, as shown in fig. 9 and 10. In one embodiment, the upper hook 26 and the lower hook 28 may be connected to form an integral structure and fixed to the door 12. In other embodiments, the upper hook 26 and the lower hook 28 may be separately fixed to the door 12. And is not particularly limited herein.

During the closing process of the door 12, mainly the lower hook 28 is subjected to the damping force of the damping assembly 16 to reduce the noise of closing the door. That is, in a case where the door body 12 is closed, the lower hook 28 interferes with the driving lever 20 to compress the rod 24. When the door body 12 is opened, the lower hook 28 is disengaged from the driving lever 20, the damper 18 is in a natural length state, and a gap is formed between the rod member 24 and the driving lever 20. It is understood that in other embodiments, the upper hook 26 may be subjected to the buffering force of the buffering assembly 16 to reduce the door closing noise, or both the upper hook 26 and the lower hook 28 may be subjected to the buffering force of the buffering assembly 16 to reduce the door closing noise, which is not limited herein. In the following embodiments, the door hook 28 is described by taking as an example the damping force received by the damper unit 16.

Referring to fig. 5, 34 to 35, the household appliance 100 further includes an inclined block 30 and a compression spring 32, the inclined block 30 and the compression spring 32 are mounted on the bracket 14, an accommodating space is provided in the inclined block 30, the compression spring 32 is partially accommodated in the accommodating space, a top of the compression spring 32 abuts against a top wall of the accommodating space, and a bottom of the compression spring 32 abuts against a support member extending into the accommodating space on the bracket 14. The top of the ramp block 30 has a ramp 74, the ramp 74 sloping upwardly in a vertical plane towards the interior of the rack 14.

When the door body 12 is closed, the end of the upper hook 26 abuts against the inclined surface 74 to lower the inclined block 30 and compress the pressure spring 32, and when the end of the upper hook 26 goes over the inclined surface 74, the inclined block 30 catches the upper hook 26 by the pressure spring 32.

During the opening process of the door body 12, the upper door hook 26 presses the inclined block 30 to move downwards, and the upper door hook 26 moves outwards until the upper door hook is completely separated. The compression spring 32 resets the ramp block 30.

The household appliance 100 may include a cavity (not shown), the bracket 14 may be fixed in the cavity, and the door 12 may be rotatably connected with the cavity. The cavity is provided with a chamber, the front side of the chamber is provided with an opening, and the door body 12 is used for closing and opening the opening. Food to be heated can be placed in the cavity.

The body 22 of the damper 18 is fixed on the bracket 14, and in the opening and closing processes of the door body 12, the body 22 is fixed, and in the closing process of the door body 12, the lower door hook 28 pushes the driving lever 20 to rotate counterclockwise, and after the driving lever 20 rotates a certain angle (eliminating the gap between the driving lever 20 and the rod 24), the driving lever contacts with the rod 24 and pushes the rod 24 to move towards the body 22, and the body 22 provides damping force for the rod 24, so that the closing speed of the door body 12 is reduced, and further the door closing noise can be reduced. When the door body 12 is opened, the lower door hook 28 drives the driving lever 20 to rotate clockwise, the rod 24 is driven by the body 22 to extend out of the body 22 until the rod 24 is separated from the driving lever 20, and the damper 18 returns to the natural length. At this time, the damper 18 is in a natural length state. The damper 18 is in a natural length condition, which is understood to be the condition of the damper 18 when the rod 24 is not under force without damage to the damper 18, or the condition of the damper 18 when the force on the rod 24 is not sufficient to move the rod 24 into the body 22.

In addition, when the lower hook 28 is disengaged from the actuating lever 20, there is a gap between the rod 24 and the actuating lever 20. In the closing process of the door body 12, the lower door hook 28 firstly contacts the driving lever 20 under a certain initial speed condition and forces the driving lever 20 to rotate anticlockwise around the rotating shaft, and the damper 18 does not play a role in blocking due to the existence of the gap in the small segment process, so that the lower door hook 28 does not have an obvious rebound phenomenon after colliding with the driving lever 20, and the phenomenon that the lower door hook 28 collides back and forth in the cavity of the driving lever 20 to cause a stagnation phenomenon is avoided.

In some embodiments, referring to fig. 22, the bracket 14 is provided with a receiving groove 34, and the body 22 is at least partially fixed in the receiving groove 34. In this manner, installation of the damper 18 may be facilitated.

Specifically, the body 22 may be a cylindrical body 22, and in one embodiment, a portion of the body 22 may be located within the receiving slot 34. When the damper 18 is installed, the body 22 can be placed in the receiving groove 34 of the bracket 14, which facilitates the installation of the damper 18.

Referring to fig. 1, 12 to 15, the bracket 14 is further provided with a protective cover 36, the protective cover 36 is provided with another receiving groove 34, the receiving groove 34 of the protective cover 36 can receive another part of the body 22, and when the protective cover 36 is connected to the bracket 14, the two receiving grooves 34 can surround the receiving body 22 to further fix the body 22. In one embodiment, the holder 14 and the protective cap 36 may be connected by a snap-fit.

In some embodiments, referring to fig. 24, the bracket 14 is provided with a limiting pillar 38, and when the door 12 is closed, the limiting pillar 38 abuts against the driving lever 20 and limits the rotation of the driving lever 20. Thus, the rotation range of the driving lever 20 can be restricted, and the driving lever 20 can be prevented from being damaged.

Specifically, the position of the position limiting column 38 is set such that the rotation of the driving lever 20 does not exceed the position of the position limiting column 38. This position is the position to which the actuating lever 20 is pivoted after the door is closed.

In some embodiments, the damping assembly 16 further includes a pivoting lever 40, the bracket 14 is provided with a switch, the pivoting lever 40 is pivotally connected to the bracket 14,

when the door body 12 is closed, the door hook abuts against the turn lever 40 so that the turn lever 40 triggers the switch. So, increase and rotate lever 40, on the one hand, can satisfy the ann rule requirement, on the other hand, can further reduce the noise of closing the door.

In particular, some household appliances 100 require the door 12 to be closed to allow the household appliance 100 to operate. For example, the microwave oven is required to emit microwave into the cavity to heat food after the door 12 is closed, so as to prevent the leakage of microwave when the door is not closed.

Under the condition that the door body 12 is closed, the lower door hook 28 abuts against the rotating lever 40 to enable the rotating lever 40 to trigger the switch, so that the control panel of the household appliance 100 acquires a related trigger signal, and then the household appliance 100 is controlled to operate, and the safety requirement is met.

In the closing process of the door body 12, the lower door hook 28 is close to the rotating lever 40, when the lower door hook 28 abuts against the rotating lever 40, the rotating lever 40 can be driven to rotate clockwise, and in the process, the lower door hook 28 and the door body 12 can be decelerated, so that the door closing noise is further reduced.

In some embodiments, referring to fig. 36-39, the turn lever 40 includes a turn arm 42 and a contact arm 44, the turn arm 42 is pivotally connected to the bracket 14, the contact arm 44 is connected to the turn arm 42, referring to fig. 27, the bracket 14 is formed with a slot 46, the contact arm 44 is at least partially positioned within the slot 46, and the contact arm 44 is used to actuate the switch. Therefore, the rotating lever 40 can be protected from being triggered manually, and the safety requirements are met.

Specifically, the contact arm 44 is away from the rotating shaft of the rotating arm 42, and during the closing process of the door 12, the lower door hook 28 may extend into the bracket 14 through the lower through hole 48 of the front plate 51 connected to the bracket 14, and push the contact arm 44 to rotate, thereby driving the entire rotating lever 40 to rotate. The contact arm 44 is at least partially located in the slot 46, so that an external thin rod or other articles can be prevented from extending into the support 14 from the lower through hole 48 to push the contact arm 44 to rotate to artificially trigger the switch, and the household appliance 100 can mistakenly think that the door body 12 is closed, thereby causing a safety problem caused by starting.

In addition, the inner side of the protection cover 36 is further provided with a bump 50, and the shape of the bump 50 is matched with that of the slot 46 to surround the contact arm 44, so that the contact arm 44 is further ensured not to be triggered by mistake, and meanwhile, the rotation of the contact arm 44 can be more stable.

In some embodiments, referring to fig. 28 to 33, the driving lever 20 includes a first arm 52 and a second arm 54 spaced apart from each other, and during the closing process of the door 12, the door hook passes under the second arm 54 and abuts against the first arm 52 to drive the driving lever 20 to rotate,

the contact arm 44 is provided with a boss 56,

the first arm 52 is provided with a notch 58, and the first arm 52 escapes from the convex column 56 through the notch 58 in the closing process of the door body 12. In this way, it is ensured that contact arm 44 of rotation lever 40 can pass through smoothly without interference.

Specifically, referring to fig. 4, when the door 12 is opened, the first arm 52 and the second arm 54 are both located on the left side of the boss 56. The first arm 52 is long, in the process that the door body 12 is closed, the lower door hook 28 firstly passes through the lower part of the second arm 54 and then enters the space between the first arm 52 and the second arm 54, then the lower door hook 28 is abutted against the first arm 52 to drive the rotating lever to rotate anticlockwise, in the rotating process of the driving lever 20, the second arm 54 clamps the lower door hook 28, the driving lever 20 drives the lower door hook 28 to continuously close the door, the first arm 52 rotates towards the direction of the convex column 56, and by arranging the notch 58, when the first arm 52 passes through, the first arm 52 does not interfere with the convex column 56, so that the lower door hook 28 can be abutted against the convex column 56 and drive the rotating lever 40 to rotate clockwise, the door body 12 can be smoothly closed, and the switch can be smoothly triggered. After the door body 12 is closed, the end of the lower hook 28 and the boss 56 are located in the space between the first arm 52 and the second arm 54, as shown in fig. 42.

Referring to fig. 3 and 8, in one embodiment, the damping assembly 16 further includes two driving elastic members: the first driving elastic element 60 and the second driving elastic element 64 form an acute angle with an included angle formed between the two driving elastic elements, the driving elastic elements and the driving lever 20 are located on opposite sides of the bracket 14, the bracket 14 is provided with a via hole 66, as shown in fig. 25 to 26, the driving lever 20 is connected with the two driving elastic elements through the via hole 66, and the two driving elastic elements are used for driving the driving lever 20 to rotate in an accelerated manner so that the driving lever 20 drives the door body 12 to accelerate. Thus, the process of first accelerating and then decelerating the lower door hook 28 can be realized.

Referring to fig. 44 to 45, in an embodiment, the buffer assembly 16 includes a single driving elastic member 65, the single driving elastic member 65 and the driving lever 20 are located on opposite sides of the bracket 14, the bracket 14 is provided with a through hole 66, the driving lever 20 is connected to the single driving elastic member 65 through the through hole 66, and the single driving elastic member 65 is configured to drive the driving lever 20 to rotate in an accelerated manner so that the driving lever 20 drives the door 12 to accelerate. Thus, the process of first accelerating and then decelerating the lower door hook 28 can be realized.

In the illustrated embodiment, the driving elastic member is a driving spring. In other embodiments, the driving elastic member may be an elastic member having other structures, and is not limited to a spring.

It is understood that in other embodiments, the number of the driving elastic members included in the damping assembly 16 is not limited to two, and may be a single driving elastic member, or may be another number of driving elastic members, and is not limited in particular.

The driving elastic members and the driving levers 20 located on the two opposite sides of the bracket 14 can distribute the related structural members, so as to avoid the disadvantage of configuration of the structural members due to reduction of space and over-concentration of weight caused by too many structural members on the same side of the bracket 14.

The driving elastic member may provide a pulling force to the driving lever 20 to accelerate the driving lever 20 to bring the lower hook 28 into acceleration, or may provide a pushing force to the driving lever 20 to accelerate the driving lever 20 to bring the lower hook 28 into acceleration. In this embodiment, the driving elastic member may provide a pulling force to the driving lever 20 to accelerate the driving lever 20 with the lower door hook 28.

Since the actuating lever 20 can drive the lower hook 28 to accelerate, the door 12 can be closed by the force of the actuating lever 20 during the acceleration phase. During acceleration of the lower hook 28, the damper 18 is then compressed when the actuating lever 20 is rotated. As the door closing process continues, the driving lever 20 continues to compress the rod 24 of the damper 18, the compression amount of the damper 18 increases, the damping force provided increases, and when the damping force provided by the damper 18 is greater than the driving force provided by the driving elastic member, the lower hook 28 starts to decelerate, so that the noise generated when the door body 12 is closed is not too great in the deceleration stage. In the present embodiment, the body 22 is stationary when the rod 24 of the damper 18 is compressed.

The first driving elastic member 60 is located above the second driving elastic member 64. Referring to fig. 25, one end of the first driving elastic element 60 hooks the positioning pillar 68 on the bracket 14, and the other end hooks the connecting portion 70 on the driving lever 20. One end of the second driving elastic element 64 hooks another positioning post 68 on the bracket 14, and the other end hooks the connecting portion 70. The included angle formed by the first driving elastic member 60 and the second driving elastic member 64 is an acute angle, which may be an angle such as degree, and the like, and is not limited in detail herein.

It is understood that in other embodiments, the number of the driving elastic members is not limited to two, and may be a single member, or more than two members, which is not specifically limited herein.

In some embodiments, referring to fig. 24, the bracket 14 is further provided with a stop 72, and the stop 72 blocks at least a portion of the rotating arm 42. Therefore, the rotating lever 40 can be protected from being triggered manually, and the safety requirements are met.

Specifically, during the closing process of the door 12, the lower hook 28 can extend into the bracket 14 through the lower through hole 48 on the bracket 14, and push the contact arm 44 to rotate, so as to drive the entire rotating lever 40 to rotate. By arranging the stopper 72, the stopper 72 shields at least a part of the rotating arm 42, so that articles such as external thin rods can be prevented from extending into the bracket 14 from the lower through hole 48 to push the rotating arm 42 to rotate to artificially trigger the switch, and the household appliance 100 mistakenly thinks that the door body 12 is closed, thereby starting the door body to cause a safety problem.

In addition, referring to fig. 15, another stop 72 is further disposed on the inner side of the protection cover 36, and the shape of the stop 72 on the bracket 14 matches the shape of the stop 72 on the protection cover 36, so as to completely shield the rotating arm 42, thereby further ensuring that the rotating arm 42 is not triggered by mistake.

It will be appreciated that in other embodiments, the stop 72 on the bracket 14 may fully block the pivot arm 42.

In some embodiments, the top surface of the stop 72 includes a ramp 74, and the ramp 74 is used to guide the hook into abutment with the contact arm 44 during closing of the door 12. Therefore, the door hook can be ensured to enter a normal position and contact with the rotating lever 40 in the closing process of the door body 12.

Specifically, during the closing process of the door body 12, the lower door hook 28 moves close to the rotating lever 40, when the lower door hook 28 reaches the inclined plane 74, the inclined plane 74 guides the tail end of the lower door hook 28 to the contact arm 44, so that the lower door hook 28 can contact with the convex column 56 of the contact arm 44, and when the lower door hook 28 continues to move, the lower door hook 28 drives the rotating lever 40, so that the rotating lever 40 can trigger the switch.

In some embodiments, the hooks include a lower hook 28, and the rack 14 is provided with a first switch 76 including a second switch 78 and a third switch 80.

The damping assembly 16 is configured such that, during the closing process of the door body 12, the driving lever 20 is driven by the lower hook 28 to trigger the first switch 76, the rotating lever 40 is driven by the lower hook 28 to trigger the second switch 78, and then trigger the third switch 80. In this way, after the lever 20 is driven to trigger the first switch 76, the lever 40 is rotated to sequentially trigger the second switch 78 and the third switch 80, so that the first switch 76, the second switch 78 and the third switch 80 are sequentially triggered, and the problem of disordered triggering sequence of switches is avoided.

In particular, the household appliance 100 may comprise a microwave oven comprising a first switch 76, a second switch 78 and a third switch 80. The first switch 76 may be a monitor switch for monitoring the entire circuit of the microwave oven. The second switch 78 may be a secondary switch for controlling the activation of the lamp and the heat sink fan or other components. The third switch 80 may be a primary switch for controlling a microwave function of the microwave oven. During the closing process of the door 12, the first switch 76, the second switch 78 and the third switch 80 are sequentially triggered to generate corresponding electrical signals, so that the control panel of the microwave oven can control the operation of the microwave oven.

The sequence of activation of the three switches is particularly important during use of the microwave oven by the user. In the door closing process, the triggering sequence should be: first the monitor switch is triggered, second the secondary switch is triggered, and finally the primary switch is triggered. Therefore, the use safety of the user can be ensured and the safety requirements can be met.

It is understood that, in other embodiments, the number of switches is not limited to three, and other numbers of switches may be used, and the number of switches and the triggering order are actually set, and are not particularly limited herein.

In some embodiments, the hook end has a first guide surface 82;

referring to fig. 28 to 33, the driving lever 20 includes a first arm 52 and a second arm 54 spaced apart from each other, and a second guide surface 84 is provided on a side surface of the second arm 54, and when the door 12 is closed, the first guide surface 82 is in fit connection with the second guide surface 84, so that the end of the hook passes around the second arm 54 and then the second arm 54 catches the hook. Therefore, in the process of closing the door body 12, the first guide surface 82 is connected with the second guide surface 84 in a matched manner, so that the tail end of the door hook bypasses the second arm 54 and then the second arm 54 clamps the door hook, a forced door closing structural design is realized, and after the driving lever 20 is abnormally triggered, the user can restore to normal state after the door is forcibly closed.

Specifically, referring to fig. 16 to 21, the hook portion 86 is disposed at the end of the lower door hook 28, and the hook portion 86 can be easily engaged. The lower hook 28 includes a first guide surface 82, and the first guide surface 82 may be disposed on the hook portion 86, such that the user can easily force the door to close, so that the lower hook 28 and the actuating lever 20 return to the normal engagement position.

Under the condition of normal door closing, under a certain initial speed condition of the lower door hook 28, the lower door hook 28 contacts the first arm 52 of the driving lever 20, the lower door hook 28 can rotate the driving lever 20, the driving lever 20 rotates to trigger the first switch 76, then the second arm 54 of the driving lever 20 clamps the lower door hook 28 to drive the lower door hook 28 to continue to close the door, and the lower door hook 28 abuts against the contact arm 44 to rotate the rotating lever 40.

However, it is easy in real life for a user or a child or the like to force the actuation lever 20 to be triggered by an abnormal means (as shown in fig. 43), such as: slender articles such as bamboo sticks and fingers extend into the support 14 to stir the driving lever 20, so that the driving lever 20 is forced to be triggered, the driving lever 20 rotates, the lower door hook 28 cannot be matched with the driving lever 20, the door body 12 cannot be closed, the household appliance 100 loses the use function, and even the machine is required to be dismounted for maintenance. The utility model discloses embodiment's domestic appliance 100, lower door collude 28 end and have first spigot surface 82, and drive lever 20 includes second spigot surface 84, and first spigot surface 82 is connected with second spigot surface 84 cooperation, can make the door collude end and block lower door collude 28 around second arm 54 after second arm 54, and the user uses great power can resume lower door collude 28 and the normal cooperation relation of drive lever 20, needn't tear quick-witted maintenance open.

In one embodiment, the end of the lower hook 28 may be forced through the gap between the second arm 54 of the actuating lever 20 and the bracket 14 by elastic deformation of the plastic. The first and second guide surfaces 82 and 84 may be guide ramps.

The following describes a principle process of opening and closing the door according to an embodiment of the present invention.

In the dual drive spring embodiment, the description of the initial and terminal states: at the initial moment (moment of closing the door), two driving elastic members are connected to the bracket 14 and the driving lever 20, the resultant force of the two driving elastic members is located above the rotation axis of the driving lever 20, and at this time, the acting force (resultant force) of the driving elastic members forces the driving lever 20 to have a clockwise rotation tendency, and the two driving elastic members are kept in a stretching state all the time. At the same time, the driving lever 20 is limited by the stop post 88 on the bracket 14 to move clockwise, and the compression spring 32 is always in a compressed state. The rod 24 of the damper 18 and the actuating lever 20 are not in direct contact with a gap therebetween. At the end time (the time after the door is opened), the lower hook 28 pulls the actuating lever 20 to move outward, and the first actuating elastic member 60 and the second actuating elastic member 64 are moved. During the movement, when the resultant force of the two driving elastic members is located above the rotation axis of the driving lever 20, the force provided to the driving lever 20 by the driving elastic members is changed from the counterclockwise force to the clockwise force that rotates the driving lever 20. After the lower hook 28 is pulled out, the driving lever 20 is rotated clockwise to the initial position while the first and second driving elastic members 64 and the damper 18 are restored to the final state. The damper 18 is rotated clockwise by the actuating lever 20, and the rod 24 is extended together until it is restored to its original length.

In the embodiment of the single actuation spring, the description of the initial and final states: at the initial moment (moment of closing the door), a single driving elastic element connects the bracket 14 and the driving lever 20, the force of the driving elastic element is above the rotation axis of the driving lever 20, and the force of the driving elastic element forces the driving lever 20 to have a clockwise rotation tendency, and the driving elastic element is kept in a stretching state all the time. At the same time, the driving lever 20 is limited by the stop post 88 on the bracket 14 to move clockwise, and the compression spring 32 is always in a compressed state. The rod 24 of the damper 18 and the actuating lever 20 are not in direct contact with a gap therebetween. At the end of the moment (moment after opening the door), the lower hook 28 pulls the actuation lever 20 outwards, with a single actuation elastic element. During the movement, when the acting force of the single driving elastic member is located above the rotation axis of the driving lever 20, the force provided to the driving lever 20 by the driving elastic member is changed from a counterclockwise rotating force to a force that rotates the driving lever 20 clockwise. After the lower hook 28 is pulled out, the actuating lever 20 is rotated clockwise to the initial position while the single actuating elastic member and the damper 18 are restored to the final state. The damper 18 is rotated clockwise by the actuating lever 20, and the rod 24 is extended together until it is restored to its original length.

The stable door closing process of slow door closing/soft door closing is realized:

as shown in fig. 1 and 40 to 42, in the dual-driving elastic member embodiment, the lower hook 28 initially contacts the first arm 52 of the driving lever 20 at a certain initial speed, and forces the driving lever 20 to rotate counterclockwise around the rotation shaft by a certain angle. During this angle, the damper 18 does not provide a barrier (i.e., the lower hook 28 does not rebound significantly after impact with the first arm 52, so as to prevent the lower hook 28 from impacting back and forth in the space between the first arm 52 and the second arm 54, causing a stagnation). At the same time, the resultant force of the two driving elastic members rotates to the lower side of the rotation shaft of the driving lever 20, and the second arm 54 of the driving lever 20 is rapidly contacted with the lower door hook 28. When the resultant force of the two driving elastic members is located below the rotating shaft of the driving lever 20, the resultant force of the driving elastic members becomes a force which makes the driving lever 20 rotate counterclockwise, and drives the lower door hook 28 to move; the actuating lever 20 comes into contact with the damper 18 and the damping comes into play. At the same time, the upper door hook 26 extends into the upper through hole 90 of the front plate 51 to start to press down the inclined block 30. The actuating lever 20 first triggers the monitor switch. Subsequently, the end of the lower hook 28 touches the boss 56 of the contact arm 44 of the rotating lever 40, and the rotating lever 40 starts to rotate, which in turn triggers the secondary switch and the primary switch (the secondary switch is stacked above the primary switch). Meanwhile, the tail end of the upper door hook 26 presses the top of the inclined block 30, and the inclined block 30 begins to rise to abut against the arc on the left side of the tail end of the upper door hook 26. And the door closing is finished until the movement is stopped.

Referring to fig. 1 and 46, in the embodiment of the single driving elastic member, the lower hook 28 firstly contacts the first arm 52 of the driving lever 20 at a certain initial speed, and forces the driving lever 20 to rotate counterclockwise around the rotating shaft by a certain angle. During this angle, the damper 18 does not provide a barrier (i.e., the lower hook 28 does not rebound significantly after impact with the first arm 52, so as to prevent the lower hook 28 from impacting back and forth in the space between the first arm 52 and the second arm 54, causing a stagnation). At the same time, the force of the single driving elastic member is rotated to below the rotation axis of the driving lever 20, and the second arm 54 of the driving lever 20 is rapidly brought into contact with the lower door hook 28. When the acting force of the single driving elastic member is located below the rotation shaft of the driving lever 20, the acting force of the driving elastic member becomes a force that rotates the driving lever 20 counterclockwise and drives the lower hook 28 to move; the actuating lever 20 comes into contact with the damper 18 and the damping comes into effect. At the same time, the upper hook 26 extends into the upper through hole 90 to start pressing down the inclined block 30. The actuating lever 20 first triggers the monitor switch. Subsequently, the end of the lower door hook 28 touches the boss 56 of the contact arm 44 of the rotating lever 40, and the rotating lever 40 starts to rotate, which in turn triggers the secondary switch and the primary switch (the secondary switch is stacked above the primary switch). Meanwhile, the tail end of the upper door hook 26 presses the top of the inclined block 30, and the inclined block 30 begins to rise to abut against the arc on the left side of the tail end of the upper door hook 26. And (4) closing the door till the motion is stopped.

(II) realizing the door opening process of slow door closing/soft door closing:

referring to fig. 40 to 42, 46 and 1, when the lower door hook 28 is driven by a human power, the driving lever 20 is driven to rotate clockwise, the lower door hook 28 is disengaged from the protruding pillar 56 of the contact arm 44 of the rotating lever 40, and the primary switch and the secondary switch are not turned on in sequence. The upper hook 26 then presses against the ramp 30, moving outward until it is completely disengaged. Then, the driving lever 20 is out of contact with the monitor switch. In this process, the force of the driving elastic member is changed from the force of forcing the counterclockwise rotation of the driving lever 20 to the clockwise rotation. After the lower hook 28 is pulled out, the driving lever 20 is actively rotated to the initial position. Finally, the first and second driving elastic members 64, the swash block 30, the rotation lever 40, and the damper 18 are all restored to the initial state, and the door opening is finished.

(III) forced door closing process:

as shown in fig. 43, the door is not closed, but the actuating lever 20 is triggered. At this time, the door 12 can be strongly pushed to close the door, and the lower hook 28 can return to the normal closing position. This is because the end of the lower hook 28 can be forced through the gap between the second arm 54 of the actuating lever 20 and the bracket 14 by elastic deformation of the plastic. The two guide surfaces can ensure smooth forced closing of the door.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A household appliance, characterized in that it comprises:

the door body is provided with a door hook;

the door body is rotatably connected with the bracket;

a buffer assembly mounted on the bracket, the buffer assembly including a recoverable damper and a driving lever, the driving lever being rotatably connected to the bracket, the damper including a body fixed to the bracket and a rod movably connected to the body,

when the door body is closed, the door hook props against the driving lever to compress the rod piece,

under the condition that the door body is opened, the door hook is separated from the driving lever, the damper is in a natural length state, and a gap is reserved between the rod piece and the driving lever.

2. The household appliance according to claim 1, wherein the bracket is provided with a receiving groove, the body being at least partially fixed in the receiving groove.

3. The household appliance according to claim 1, wherein a limiting post is arranged on the bracket, and the limiting post abuts against the driving lever and limits rotation of the driving lever when the door body is closed.

4. The household appliance of claim 1, wherein the buffer assembly further comprises a rotating lever, a switch is disposed on the bracket, the rotating lever is rotatably connected with the bracket,

under the condition that the door body is closed, the door hook abuts against the rotating lever so that the rotating lever triggers the switch.

5. The household appliance of claim 4, wherein the rotary lever comprises a rotary arm and a contact arm, the rotary arm is rotatably connected to the bracket, the contact arm is connected to the rotary arm, the bracket is provided with a slot, the contact arm is at least partially located in the slot, and the contact arm is used for triggering the switch.

6. The household appliance according to claim 5, wherein the driving lever comprises a first arm and a second arm which are spaced, the door hook abuts against the first arm after passing under the second arm in the closing process of the door body so as to drive the driving lever to rotate,

the contact arm is provided with a convex column,

the first arm is provided with a notch, and the convex column is avoided by the first arm through the notch in the closing process of the door body.

7. The household appliance according to claim 5, wherein the bracket is further provided with a stopper, the stopper covering at least a portion of the rotating arm.

8. The household appliance according to claim 7, wherein the top surface of the stopper comprises an inclined surface, and the inclined surface is used for guiding the door hook to abut against the contact arm in the process of closing the door body.

9. The household appliance according to claim 4, wherein the door hook comprises a lower door hook, the bracket is provided with a first switch, the switch comprises a second switch and a third switch,

the buffering assembly is configured to trigger the first switch under the driving of the lower door hook by the driving lever in the closing process of the door body, trigger the second switch under the driving of the lower door hook by the rotating lever and trigger the third switch later.

10. The household appliance of claim 1, wherein the door hook end has a first guide surface;

the driving lever comprises a first arm and a second arm which are spaced, a second guide surface is arranged on the side surface of the second arm, and in the process that the door body is closed, the first guide surface is matched and connected with the second guide surface, so that the tail end of the door hook bypasses behind the second arm, and the second arm blocks the door hook.

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