CN111502468A

CN111502468A - Door body switch mechanism and household appliance

Info

Publication number: CN111502468A
Application number: CN201910093275.7A
Authority: CN
Inventors: 韩龙先; 冯浩; 刘文涛; 杨爱军; 丁少凡
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Current assignee: Qingdao Haier Co Ltd; Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-08-07

Abstract

The invention relates to the technical field of household appliances, in particular to a door body switch mechanism and a household appliance. This door body on-off mechanism includes: the push rod is connected with the door body and can drive the door body to rotate; the driving mechanism provides power for the push rod to drive the door body to rotate; and the manual-automatic converter is respectively connected with the push rod and the driving mechanism, and can linearly move along with the push rod so as to realize the conversion between the manual operation of the push rod and the automatic door opening and closing operation. According to the door body opening and closing mechanism provided by the invention, the manual-automatic converter is directly connected with the push rod, so that automatic or manual opening and closing actions of the door body can be realized according to the needs of a user, manual opening and closing and automatic opening and closing free switching can be realized without other operations of the user, and the use experience of the user is improved.

Description

Door body switch mechanism and household appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to a door body switch mechanism and a household appliance.

Background

In the existing oven industry technology, the oven needs to be manually operated to cook the food, and when the oven works, an operator manually opens the oven door to put the food into the oven. After the food is baked, an operator is required to manually open the oven door and take out the food, so that the problem that the high-temperature oven door burns a user in the operation process is solved. In order to solve the problem, an oven with an automatic door is proposed in the prior art, but the oven door cannot be manually opened and closed when the power failure occurs in the oven.

Therefore, a need exists for a household appliance that can solve the problem that the existing door body cannot be opened or closed manually after power failure.

Disclosure of Invention

The invention aims to provide a door body switching mechanism and a household appliance, which can realize the dual functions of manual opening and closing and automatic opening and closing of a door body.

In order to achieve the purpose, the invention adopts the following technical scheme:

provided is a door body opening and closing mechanism including:

the push rod is connected with the door body and can drive the door body to rotate;

the driving mechanism provides power for the push rod to drive the door body to rotate;

and the manual-automatic converter is respectively connected with the push rod and the driving mechanism, and can linearly move along with the push rod so as to realize the conversion between the manual operation of the push rod and the automatic door opening and closing operation.

Preferably, the manual-automatic converter is a sliding arm, and the sliding arm is connected with the push rod in a sliding manner.

Preferably, the sliding arm is provided with a sliding hole, and the sliding arm and the push rod are connected through the sliding hole and can slide along the extending direction of the sliding hole.

Preferably, the sliding hole is a rectangular hole or a kidney-shaped hole.

Preferably, the driving mechanism comprises a power source, a transmission assembly and a sliding block, the power source drives the sliding block to move linearly through the transmission assembly, and the sliding block is connected with the sliding arm.

Preferably, the power source is a motor, and the transmission assembly is a lead screw nut, a gear and rack assembly or a worm and gear assembly.

Preferably, a speed reducer is further arranged between the motor and the transmission assembly.

Preferably, the door body opening and closing mechanism further comprises a door body fixing tongue, one end of the door body fixing tongue is rotatably connected with the push rod, and the other end of the door body fixing tongue is fixedly connected with the door body.

The invention also provides a household appliance which comprises a box body and a door body, wherein the door body is rotatably arranged on the box body, and the household appliance also comprises the door body opening and closing mechanism which is arranged in the box body and can enable the door body to be opened and closed automatically or manually.

Preferably, the door body locking device further comprises a box body locking portion and a door body fixing tongue, one end of the door body fixing tongue is connected with the push rod and the box body in a rotating mode, the other end of the door body fixing tongue is fixedly connected with the door body, the door body locking portion is further arranged at one end, connected with the box body, of the door body fixing tongue, the box body locking portion is arranged on the box body, and the door body locking portion and the box body locking portion can be interlocked.

The invention has the beneficial effects that:

according to the door body opening and closing mechanism provided by the invention, the manual-automatic converter is directly connected with the push rod, so that automatic or manual opening and closing actions of the door body can be realized according to the needs of a user, manual opening and closing and automatic opening and closing free switching can be realized without other operations of the user, and the use experience of the user is improved.

The household appliance provided by the invention can realize the manual opening and closing of the door body under the condition of power failure, can automatically open and close the door body under the condition of power on, and can realize the free switching between the manual opening and closing of the door body and the automatic opening and closing of the door body by the manual-automatic integrated converter under the condition of no need of other structure assistance.

Drawings

Fig. 1 is a schematic diagram of a door opening and closing mechanism of a household appliance according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a door opening and closing mechanism of a household appliance according to an embodiment of the present invention;

fig. 3 is a schematic structural view of unlocking the door locking portion and the box locking portion provided by the embodiment of the invention;

fig. 4 is a schematic structural diagram of the interlocking of the door locking part and the box locking part provided by the embodiment of the invention.

In the figure:

1. a push rod; 2. a drive mechanism; 21. a motor; 22. a lead screw nut; 23. a slider; 3. a slide arm; 31. A slide hole; 4. a speed reducer; 5. the door body fixes the tongue; 51. a door body locking part; 6. a box body locking part; 7. A pivot.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment provides a door opening and closing mechanism, which includes a driving mechanism 2, a push rod and a manual-automatic converter, wherein the push rod 1 is connected to a door body and can drive the door body to rotate; the driving mechanism 2 provides power for the push rod 1 to drive the door body to rotate, and the manual-automatic converter is respectively connected with the push rod 1 and the driving mechanism 2, so that the manual and automatic door body opening and closing conversion of the push rod 1 can be realized.

The door body opening and closing mechanism provided in this embodiment can realize the automatic or manual action that opens and shuts of the door body, can realize opening and shutting of the door body according to user's needs, need not the user and carries out other operations and can realize the switching action that manual opening and shutting opened and shut automatically, has improved user and has used experience.

The manual rotator can achieve the purpose of manually or automatically closing the door in a working state, when the household appliance is in a power failure state, the purpose of manually opening and closing the door by a user can be achieved, meanwhile, under the power-on state of the household appliance, the purpose of manually opening and closing the door by the user can also be achieved, the door body opening and closing mechanism only needs the user to push and pull the door body to achieve manual opening and closing, other operations are not needed by the user, and the user can select the opening and closing door body according to needs.

Because the manual-automatic converter plays the role of pushing and pulling the push rod 1 in the automatic opening and closing action of the door body, the manual opening and closing door is not required to be provided with an independent structure in the embodiment, so that the structure of the household appliance provided in the embodiment is simpler, and the quick switching action of the automatic opening and closing door body and the manual opening and closing door body can be realized.

The manual-automatic converter is a sliding arm 3, and the sliding arm 3 is connected with the push rod 1 in a sliding mode. Specifically, the sliding arm 3 is provided with a sliding hole 31, and the sliding arm 3 is connected with the push rod 1 through the sliding hole 31 and can slide along the extending direction of the sliding hole 31. The push rod 1 is connected with the sliding arm 3 through a pivot 7, and the pivot 7 is specifically arranged in the sliding hole 31 and can move back and forth in the sliding hole 31, so that the sliding hole 31 can realize quick switching between automatic door opening and closing and manual door opening and closing. Preferably, the slide hole 31 is a rectangular hole in the present embodiment. Of course, in other embodiments, the sliding hole 31 may also be a kidney-shaped hole.

The driving mechanism comprises a power source 21, a transmission assembly and a slide block 23, wherein the power source 21 drives the slide block 23 to move linearly through the transmission assembly, and the slide block 23 is connected with the sliding arm 3.

As shown in fig. 1 and 2, the power source is a motor, in this embodiment, the transmission assembly includes a screw nut 22, the motor rotates forward and backward to enable the screw nut to reciprocate linearly, the nut is fixedly connected to a slider 23 to enable the slider to move linearly along with the nut, the slider 23 is fixedly connected to a sliding arm 3 to enable the sliding arm 3 to move linearly, and a sliding hole 31 is formed in the sliding arm 3 to enable the push rod 1 to move linearly when the sliding arm 3 moves linearly. In order to prevent the damage caused by the large action amplitude of the door body due to the excessively high rotating speed of the motor, a speed reducer 4 is further arranged between the motor and the transmission assembly in the embodiment.

Of course, it is also possible to install pressure sensors at both ends of the sliding hole 31, and the pressure sensors are used to determine whether the pivot 7 is located on either side of the sliding hole 31. According to the specific position of the pivot 7, the controller controls the motor to rotate forward and backward.

More specifically, the door body opening and closing mechanism further comprises a door body fixing tongue 5 fixedly arranged on the door body, and the door body fixing tongue 5 is rotatably connected with the push rod 1, so that the push rod 1 can drive the door body to be opened and closed.

The embodiment also provides a household appliance, which further comprises a box body and a door body, wherein the door body is rotatably arranged on the box body, the household appliance further comprises a door body opening and closing mechanism, and the door body opening and closing mechanism is arranged in the box body and can enable the door body to be opened and closed automatically or manually. Because door body fixing tongue 5 one end is rotated with push rod 1 and is connected, the other end and door body fixed connection, push rod 1 still need guarantee the fixed door body state of opening, and this effect can lead to push rod 1 to receive the pulling force of a body, causes the motor moment of torsion to increase, and in order to reduce the motor moment of torsion, door body fixing tongue 5 still rotates with the box in this embodiment and is connected.

The household appliance provided by the embodiment can realize the manual opening and closing of the door body under the condition of power failure, can automatically open and close the door body under the condition of power on, and can realize the free switching between the manual opening and closing of the door body and the automatic opening and closing of the door body by the manual-automatic integrated converter under the state without the assistance of other structures.

After the door body is closed, in order to keep the state that the door body is closed, it is just can realize to keep absolute perpendicular between the door body and the box, but because make all have the error with the installation among the prior art, often can lead to the door body slope to receive gravity to open automatically, and should open and realize under motor non-operating condition, for solving above-mentioned problem, in this embodiment one end that door body fixing tongue 5 and box are connected is provided with door body locking part 51, and be provided with box locking part 6 on the box, door body locking part 51 and box locking part 6 chucking interlocking (refer to fig. 3 and 4), guarantee the stability of the door body under the closed state, the cover is equipped with balance spring on box locking part 6, guarantee the interlocking between door body locking part 51 and box locking part 6. Preferably, the door lock portion 51 and the box lock portion 6 have a cam structure.

In this embodiment, the household appliance is an oven or a microwave oven.

The following specifically describes the operation process of the household appliance when opening and closing the door body according to fig. 1:

when the door body is in an initial state, the door body is in a closed state, the motor drives the screw rod to rotate after obtaining a door opening instruction, the nut 22 on the screw rod drives the sliding block 23 and the sliding arm 3 to linearly move, and the pivot 7 is located at the left end of the sliding hole 31, so that when the sliding arm moves towards the right side, the push rod 1 can be pushed to move towards the right side, and the purpose that the push rod 1 pushes the door body is further achieved. After the door body is pushed to be opened, the motor rotates reversely, the pivot 7 is located at the right end of the sliding hole 31, the motor can rotate conveniently to achieve the action of closing the door body, and meanwhile, the action of manually closing the door body can be achieved under the power-off condition after the door body is opened.

Example 2

The power source is a motor, the transmission assembly is a gear and rack assembly, and specifically comprises a gear (not shown in the figure) and a rack (not shown in the figure), wherein the gear is meshed with the rack, the gear is positioned above or below the rack, the sliding block 23 is fixed on the rack, the sliding block 23 can move linearly along with the rack, and the motor is connected with the gear and drives the gear to rotate. The straight reciprocating motion of rack can be realized to the positive and negative commentaries on classics of motor, and rack and slider 23 fixed connection can drive slider 23 rectilinear motion together, and

slider

23 and 3 fixed connection of slide arm can drive 3 rectilinear motion of slide arm, and sliding hole 31 sets up on slide arm 3, and slide arm 3 can push and pull push rod 1 rectilinear motion when rectilinear motion. In order to prevent the damage caused by the large action amplitude of the door body due to the excessively high rotating speed of the motor, a speed reducer 4 is further arranged between the motor and the transmission assembly in the embodiment.

In this embodiment, the household appliance is an oven or a microwave oven.

The working process in this embodiment is similar to that in embodiment 1, and is not described herein again.

Example 3

The power source is a motor, the transmission assembly is a worm and gear assembly, and specifically comprises a worm wheel (not shown in the figure) and a worm (not shown in the figure), wherein the worm wheel is meshed with the worm, the worm wheel is positioned above or below or on any side of the worm, the sliding block 23 is fixed on the worm, the sliding block 23 can move linearly along with the worm, and the motor is connected with the worm wheel and drives the worm wheel to rotate. The straight reciprocating motion of worm can be realized to the positive and negative commentaries on classics of motor, and worm and slider 23 fixed connection can drive slider 23 rectilinear motion together, and

slider

In this embodiment, the household appliance is an oven or a microwave oven.

It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. A door opening and closing mechanism, comprising:

the push rod (1) is connected with the door body and can drive the door body to rotate;

the driving mechanism (2) is used for providing power for the push rod (1) to drive the door body to rotate;

and the manual-automatic converter is respectively connected with the push rod (1) and the driving mechanism (2), and can linearly move along with the push rod so as to realize the conversion between the manual operation of the push rod (1) and the automatic door opening and closing operation.

2. The door opening and closing mechanism according to claim 1, wherein the manual-automatic converter is a sliding arm (3), and the sliding arm (3) is slidably connected with the push rod (1).

3. The door opening and closing mechanism according to claim 2, wherein the sliding arm (3) is provided with a sliding hole (31), and the sliding arm (3) is connected with the push rod (1) through the sliding hole (31) and can slide along the extending direction of the sliding hole (31).

4. The door opening and closing mechanism according to claim 3, wherein the sliding hole (31) is a rectangular hole or a kidney-shaped hole.

5. The door opening and closing mechanism according to any one of claims 2 to 4, wherein the driving mechanism (2) comprises a power source (21), a transmission assembly and a sliding block, the power source drives the sliding block to move linearly through the transmission assembly, and the sliding block is connected with the sliding arm.

6. The door opening and closing mechanism according to claim 5, wherein the power source is a motor (21), and the transmission assembly is a lead screw nut (22), a rack and pinion assembly or a worm and gear assembly.

7. The door opening and closing mechanism according to claim 6, wherein a speed reducer (4) is further arranged between the motor (21) and the transmission assembly.

8. The door opening and closing mechanism according to claim 5, further comprising a door fixing tongue (5), wherein one end of the door fixing tongue (5) is rotatably connected with the push rod (1), and the other end of the door fixing tongue is fixedly connected with the door.

9. A household appliance comprises a box body and a door body, wherein the door body is rotatably arranged on the box body, and the household appliance is characterized by further comprising a door body opening and closing mechanism according to any one of claims 1 to 7, and the door body opening and closing mechanism is arranged in the box body and can enable the door body to be opened and closed automatically or manually.

10. The household appliance according to claim 9, further comprising a box body locking portion (6) and a door body fixing tongue (5), wherein one end of the door body fixing tongue is rotatably connected with the push rod (1) and the box body, the other end of the door body fixing tongue is fixedly connected with the door body, a door body locking portion (51) is further arranged at one end of the door body fixing tongue (5) connected with the box body, the box body locking portion (6) is arranged on the box body, and the door body locking portion (51) and the box body locking portion (6) can be interlocked.