CN111088658A

CN111088658A - Drum washing machine and control method thereof

Info

Publication number: CN111088658A
Application number: CN201811234680.8A
Authority: CN
Inventors: 赵志强; 吕佩师; 许升
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2020-05-01

Abstract

The invention discloses a drum washing machine and a control method thereof. The drum washing machine comprises an inner drum and an inner drum door arranged at an inner drum throwing opening, wherein the inner drum door is detachably and rotatably arranged at the inner drum throwing opening, and the inner drum door is provided with a locking device to enable the inner drum door to seal the inner drum throwing opening. The control method of the drum washing machine is also included. The invention can make the inner barrel door open and close and lock on the inner barrel through the matching of the rotating shaft structure and the locking device; the rotating shaft structure is convenient to disassemble and assemble the inner barrel door in a telescopic arrangement mode; the locking device is provided with a position detection device, so that locking between the inner barrel door and the inner barrel can be ensured, and water leakage is prevented.

Description

Drum washing machine and control method thereof

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a drum washing machine and a control method thereof.

Background

The washing machine is used as a household appliance which is widely used in daily life of people, helps people get rid of the trouble of washing clothes, and brings great convenience to people. However, the washing machine has certain disadvantages, such as long time consumption, large water consumption, etc., and with the development of society, water resources become more and more important as an important natural resource, and the awareness of water saving of people is also improved, and how to realize the water saving function of the washing machine is very important.

In the prior art, a throwing opening in front of an inner barrel is sealed by a telescopic door seal, or an inner barrel door is arranged at the throwing opening of the inner barrel, and a user cannot easily observe the position of the inner barrel door because the inner barrel door is arranged inside a shell, and a sealed washing space cannot be formed once the inner barrel door and the inner barrel do not form a sealing structure, so that the aim of water-saving washing cannot be fulfilled.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a drum washing machine and a control method thereof.

In order to solve the technical problems, the invention adopts the technical scheme that:

a drum washing machine comprises an inner drum and an inner drum door arranged at an inner drum throwing opening, wherein the inner drum door is detachably and rotatably arranged at the inner drum throwing opening, and the inner drum door is provided with a locking device to enable the inner drum door to seal the inner drum throwing opening.

The inner tube door is provided with the telescopic pivot, and the inner tube corresponds the position and is provided with the shaft hole, the pivot includes the scalable setting of one end at least and is convenient for install and dismantle.

The inner tube door is provided with the cavity, the cavity includes first cavity and second cavity, the pivot is including fixing the first pivot in the first cavity and scalable setting second pivot in the second cavity, first pivot and the coaxial setting of second pivot.

And a fixed block and an elastic piece are arranged in the second cavity, one end of the elastic piece is abutted against the positioning block, and the other end of the elastic piece is abutted against the second rotating shaft to enable the second rotating shaft to be telescopic.

The inner tube door is provided with the cavity, the pivot is including setting up at the cavity both ends and first pivot and the second pivot of coaxial setting, is provided with the elastic component between first pivot and second pivot, first pivot and second pivot are all scalable for the cavity.

The rotating shaft is characterized in that a limiting groove is formed in the cavity, a limiting protrusion matched with the limiting groove is arranged outside the rotating shaft, or the limiting protrusion is arranged inside the cavity, the limiting groove matched with the limiting protrusion is arranged outside the rotating shaft, and the rotating shaft is limited in circumferential direction.

The locking device comprises a lock hole and a lock pin, the lock hole and the lock pin are respectively arranged on the inner barrel and the inner barrel door, and the locking device is provided with a position detection device for detecting whether the lock pin is inserted into the lock hole.

The locking device further comprises a lock catch, the lock hole is formed in the lock catch, the locking device further comprises a lock seat, the lock seat is provided with an avoiding hole for the lock catch to be buckled in, the lock pin is arranged on the lock seat in a telescopic mode and can be inserted into the lock hole to achieve locking, and the lock catch and/or the lock pin are/is provided with a position detection device.

The position detection device comprises a detection element and a detected element, the lock catch and/or the lock pin are/is provided with the detected element, the drum washing machine further comprises an outer drum and a machine shell, and the outer drum or the machine shell is provided with the detection element;

preferably, the detecting element corresponding to the latch is disposed on the front plate of the cabinet, and the detecting element corresponding to the latch is disposed on the outer tub.

A control method of a drum washing machine is as above, and the control method includes judging whether an inner drum door is closed in place after the drum washing machine receives a signal that a lock catch and a lock pin are in place.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

(1) The opening, closing and locking of the inner barrel door on the inner barrel can be realized through the matching of the rotating shaft structure and the locking device;

(2) the rotating shaft structure is convenient to disassemble and assemble the inner barrel door in a telescopic arrangement mode;

(3) the locking device is provided with a position detection device, so that locking between the inner barrel door and the inner barrel can be ensured, and water leakage is prevented.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a sectional view of a drum washing machine according to the present invention;

FIG. 2 is an exploded view of the drum washing machine of the present invention;

FIG. 3 is a front view of the inner barrel and inner barrel door of the present invention;

FIG. 4 is one embodiment of a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is an embodiment of a cross-sectional view taken at A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 8 is a cross-sectional view taken at D-D of FIG. 3;

FIG. 9 is a schematic view of a sealing structure of the present invention;

FIG. 10 is a partial schematic view of FIG. 9;

FIG. 11 is a schematic view of the drum door.

In the figure: 1. an inner barrel; 2. an inner cylinder door; 21. a rotating shaft structure; 211. a first cavity; 211' and a cavity; 212. a second cavity; 213. a first rotating shaft; 213', a first rotating shaft; 214. a second rotating shaft; 214', a second rotating shaft; 215. a fixed block; 216. an elastic member; 216', an elastic member; 217. a limiting groove; 218. a limiting bulge;

22. a locking structure; 221. a lock seat; 2211. a lock pin; 222. locking; 2221. a lock hole;

23. a sealing structure; 231. an installation part; 24. a first door body; 25. a second door body; 251. reinforcing ribs;

3. a housing; 4. a machine door; 5. a measured element; 6. a detection element.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention relates to a drum washing machine, as shown in fig. 1 and 2.

The traditional drum washing machine has dewatering holes in the inner drum, water is filled between the inner drum and the outer drum in the washing process, and the inner drum and the outer drum are not easy to clean and are easy to store dirt and cause pollution to clothes in the inner drum; and the water between the inner cylinder and the outer cylinder does not participate in washing substantially, which causes water resource waste. Thus, the drum washing machine of the present invention is a drum washing machine without a perforated drum as shown in fig. 1.

The drum washing machine comprises a shell 3, a machine door 4 arranged on the front end shell 3, an inner drum 1 and an outer drum, wherein the inner drum 1 is provided with a feeding opening for a user to feed clothes into the inner drum 1, and in order to ensure that the inner drum 1 forms a closed washing space, the feeding opening of the inner drum 1 is provided with an inner drum door 2, as shown in figures 1 and 2, the inner drum door 2 can be opened and closed and is detachably and rotatably arranged at the feeding opening of the inner drum 1, and a locking device is arranged to enable the inner drum door 2 to seal the feeding opening of the inner drum 1, so that washing water cannot spill in the working process.

The inner drum door 2 is fixed in a manner as shown in fig. 2-8, and the door 4 of a general drum washing machine is opened to rotate horizontally, so that the inner drum door 2 can be connected with the two horizontal ends of the inner drum door 2, as shown in fig. 3, one end of the inner drum door is a rotating shaft structure and is fixed on the inner drum 1 through a structure of a rotating shaft and a hole, and the other end of the inner drum door is a locking structure 22 to ensure that the inner drum door 2 forms a seal after being closed.

Interior section of thick bamboo door 2 is provided with the telescopic pivot, and inner tube 1 corresponds the position and is provided with the shaft hole, the pivot includes the scalable setting of one end at least and is convenient for install and dismantle.

Fig. 4 is a view showing one embodiment in which only one end is telescopically arranged, and fig. 4 is an example of a sectional view of a rotating shaft structure of a drum washing machine according to the present invention, which is a sectional view taken at a-a of fig. 3. Interior section of thick bamboo door 2 is provided with first cavity 211 and second cavity 212, and the cavity has the shaft hole, can supply the pivot to stretch out, the pivot is including fixing the first pivot in first cavity 211 and the scalable second pivot of setting in second cavity 212, first pivot 213 and the coaxial setting of second pivot 214. A fixed block 215 and an elastic element 216 are disposed in the second cavity 212, one end of the elastic element 216 abuts against the fixed block 215, and the other end abuts against the second rotating shaft 214, so that the second rotating shaft 214 can extend and retract.

When the door needs to be installed, the first rotating shaft is inserted into the corresponding shaft hole on the inner barrel 1, and then the second rotating shaft is pushed into the second cavity 212, after the rotating shaft reaches the target position, because the second rotating shaft is provided with the fixing block 215 and the elastic piece, the second rotating shaft can extend out of the shaft hole of the cavity 211' again and is inserted into the shaft hole arranged on the inner barrel 1, so that the inner barrel door 2 is fixed on the inner barrel 1 and can rotate.

Fig. 5 is another embodiment of the rotating shaft structure of the drum washing machine according to the present invention, in which both ends of the rotating shaft are telescopically arranged, and is a sectional view taken along a-a in fig. 3. The inner cylinder door 2 is provided with a cavity 211', the rotating shaft comprises a first rotating shaft 213' and a second rotating shaft 214 'which are arranged at two ends of the cavity 211' and are coaxially arranged, an elastic part 216 'is arranged between the first rotating shaft 213' and the second rotating shaft 214 ', and the first rotating shaft and the second rotating shaft can stretch and retract relative to the cavity 211'. As shown in fig. 5, since the elastic member is disposed between the first rotating shaft and the second rotating shaft, the first rotating shaft and/or the second rotating shaft can be pressed into the cavity 211' during the installation process, and when the first rotating shaft/the second rotating shaft reaches a predetermined position, the first rotating shaft/the second rotating shaft is ejected and inserted into the shaft hole of the inner cylinder 1 to form a fixed structure and can rotate along the shaft.

Preferably, a limiting structure is arranged between the rotating shaft and the cavity 211', as shown in fig. 6, fig. 6 is a cross-sectional view taken from B-B in fig. 3, a limiting groove 217 is arranged inside the cavity 211', the rotating shaft is provided with a limiting protrusion 218, the limiting protrusion 218 is clamped into the limiting groove 217, and the rotating shaft is prevented from moving relative to the inner wall of the cavity 211' during the rotation of the inner cylinder door 2, so that the connection of the internal elastic part and other structures is not affected. Or limit the relative movement between the rotating shaft and the cavity 211' in the circumferential direction through other limit structures.

At the opposite ends of the rotation shaft structure, locking means including a locking hole 2221 and a locking pin 2211 are provided, the locking means including a locking hole 2221 and a locking pin 2211, the locking hole 2221 and the locking pin 2211 being provided at the inner cylinder 1 and the inner cylinder door 2, respectively.

Fig. 7 and 8 show the locking device of the present invention, wherein a lock seat 221 is disposed at the inner cylinder 1, a lock catch 222 is disposed on the inner cylinder door 2, and the lock catch 222 has a lock hole 2221. The lock base 221 has an avoiding structure for avoiding the lock catch 222, a lock pin 2211 is arranged at the lock base 221, the lock pin 2211 can be inserted into the avoiding structure, after the lock catch 222 is inserted into the avoiding structure, the lock pin 2211 can be aligned with the lock hole 2221 on the lock catch 222, and after the lock catch 222 is inserted into the avoiding structure and the lock pin 2211 is inserted into the lock hole 2221, the inner cylinder door 2 is in a locked state.

The other end of the lock pin 2211 is provided with a lock spring, so that the lock pin 2211 is in an extended state under the action of the lock spring, and only when the lock catch 222 abuts against the lock pin 2211, the lock pin 2211 is contracted, as shown in fig. 8, the extended top end of the lock pin 2211 is provided with a chamfer, one end of the lock catch 222 inserted into the avoiding structure is also provided with a corresponding chamfer, when the lock catch 222 touches the lock pin 2211, the lock pin 2211 moves upwards to compress the lock spring, after the lock catch 222 moves towards the inside of the avoiding structure for a certain distance, the lock hole 2221 moves to the lower part of the lock pin 2211, and under the action of the lock spring, the lock pin 2211 is pushed into the lock hole 2221, so that the.

As shown in fig. 9, an annular seal structure 23 matching the shape of the inlet of the inner cylinder 1 is further provided between the inner cylinder 1 and the inner cylinder door 2. Prevent that the water in the inner tube 1 from flowing out from the gap, influencing normal work.

Fig. 10 is a partial enlarged view of fig. 9, and as shown in the figure, the inner cylinder 1 is rolled towards the periphery to form a curled edge with a certain radian, the curled edge can be turned to form a closed figure, and the contact surface of the sealing structure 23 and the curled edge is provided with a curled edge groove matched with the curled edge.

The specific arrangement position of the seal structure 23 can also be seen with reference to fig. 7.

The radian of the cross-sectional shape of the bead groove is greater than that of the bead cross-sectional shape, so that the bead is tightly wrapped by the deformation of the sealing structure 23 after the bead falls into the bead groove.

If the radian of the cross section of the bead is not matched with the radian of the bead groove, or the radian of the bead groove is too small, or a gap is formed between the bead of the inner cylinder 1 and the sealing structure 23, a good sealing structure 23 cannot be formed after the bead is stopped. The sealing structure 23 and the inner cylinder door 2 are integrally formed or can be detachably and fixedly connected.

As shown in fig. 10, the inner-tube door 2 is provided with a stopper, and the seal structure 23 is provided with a mounting portion 231, and the mounting portion 231 is restricted in the stopper to form a fixed connection. The limiting part is an annular groove which is wide in the inner part and narrow in the position close to the inner cylinder 1, the mounting part 231 of the sealing structure 23 is matched with the cross section of the limiting groove 217 in shape, and the sealing structure 23 is fixed after being mounted into the limiting part.

Because the inner cylinder 1 needs to form a closed washing space in the washing process, whether the inner cylinder door 2 is closed in place needs to be judged, otherwise, the inner cylinder 1 is leaked, and the waterless washing process among the cylinders cannot be realized.

The drum washing machine is provided with the position detection device on the inner drum door 2 and is used for detecting whether the inner drum door 2 is closed in place. One of the principles is that the distance between the inner cylinder door 2 and a fixed structure close to the inner cylinder door 2 is detected for judgment, when the distance between the inner cylinder door 2 and the fixed structure reaches a specified distance, the inner cylinder door 2 can be judged to be closed in place, otherwise, the inner cylinder door 2 is not closed in place.

The specific setting of this mode is: as shown in fig. 1, the drum washing machine further includes a housing 3, the position detection device includes a detection element 6 and a detected element 5, the detection element 6 is fixed at a position of the housing 3 close to the inner drum door 2, the detected element 5 is fixed at the inner drum door 2, and whether the inner drum door 2 is closed in place is judged according to the position relationship between the detection element and the detected element.

Besides the detection element arranged on the shell 3, the door detection device can be arranged on the machine door 4, and although the machine door 4 can move, a user can easily judge whether the machine door 4 is closed in place, so that after the machine door 4 is closed in place, whether the inner cylinder door 2 in the machine door 4 and the shell 3 is in place can be judged.

The position that corresponds with interior section of thick bamboo door 2 on the casing 3 is provided with quick-witted door 4, quick-witted door 4 and interior section of thick bamboo door 2 have the same direction of opening, quick-witted door 4 is fixed with detecting element, interior section of thick bamboo door 2 is fixed with the component of being surveyed, judges through detecting element and the position relation of the component of being surveyed whether interior section of thick bamboo door 2 closes and targets in place.

The detecting element can be a reed pipe, the detected element can be a magnet, and when the inner cylinder door 2 is closed to a proper position, a set distance is reached between the magnet and the reed pipe and a corresponding signal is generated.

The position detection device is not limited to the combination of the magnet and the reed switch, and can be arranged as other proximity switches, but because the inner cylinder door 2 needs to rotate along with the inner cylinder 1, a circuit structure which needs power supply or signal transmission is not suitable to be arranged on the inner cylinder door 2, so as to avoid influencing the rotation of the inner cylinder 1.

In order to ensure that the detection element and the element to be detected can generate induction, the detection element and the element to be detected are arranged at a close distance as possible, and more sensitive induction can be generated. Preferably, the detected element arranged on the inner drum door 2 and the detected element arranged on the shell 3/the machine door 4 are positioned on the same horizontal plane.

The drum washing machine of the present invention has a locking device, and whether the inner drum door 2 is locked or not can be judged by whether or not the locking device has the locking button 222, the locking pin 2211 and other members in place, which is different from the principle of the previous embodiment.

As shown in fig. 8, the locking device may be provided with a position detecting device for detecting whether the locker 222 and the locker 2211 reach the designated position at the same time to form a locked state. However, since the latch 222 moves horizontally and the lock pin 2211 moves vertically, the distance detecting devices are disposed at different positions.

A detecting element for detecting the position of the locker 222 may be provided at the front panel of the door 4 or the housing 3, and a detecting element for detecting the position of the locker 2211 may be provided at a corresponding position of the tub or at the top or bottom of the housing 3.

As shown in fig. 11, the inner cylinder door is composed of a first door body 24 and a second door body 25, and a reinforcing rib 251 is disposed at the second door body to enhance the rigidity of the door body and prevent the door body from deforming and leaking. The first door body and the second door body are fixed through a buckle and a screw.

The invention also relates to a control method of the drum washing machine, and the drum washing machine is as described above. The control method comprises the step of judging whether the inner cylinder door is closed in place or not through signals of the position detection device.

When the position detection device is arranged outside the inner drum door and on the shell, the control method comprises the steps that when the inner drum door is closed in place, a signal A is generated from the distance between the inner drum door and the shell, when the inner drum door is not closed in place, a signal B is generated from the distance between the inner drum door and the shell, the drum washing machine carries out detection after the inner drum door is closed, and when the signal A is received, the judgment result is that the inner drum door is closed in place, and washing.

When the position detection device is arranged outside the inner drum door and on the machine door, the control method is that a signal A ' is generated by the distance between the inner drum door and the closed machine door when the inner drum door is closed in place, a signal B ' is generated by the distance between the inner drum door and the closed machine door when the inner drum is not closed in place, the roller washing machine detects after the inner drum door and the machine door are closed, and the roller washing machine judges that the inner drum door and the machine door are closed in place after receiving the signal A ' and performs washing.

When the position detection device is arranged on the lock pin and the lock catch of the locking device, the control method is that when the lock catch is inserted into the avoiding structure to enable the lock hole to align with the lock pin, the distance between the lock catch and the shell/the machine door is a signal a, and no signal a can be generated at other positions. If only the signal a or the signal b or both signals are absent, the lock state cannot be determined.

And monitoring the position of the inner drum door according to the signal change of the position detection device in the whole working process of the drum washing machine, or judging whether the inner drum door is closed in place or not when the inner drum door is closed again every time the inner drum door is opened in the working process of the washing machine.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a drum type washing machine, includes the inner tube and sets up the inner tube door of putting in mouthful department at the inner tube, its characterized in that: the inner cylinder door is detachably and rotatably arranged at the inner cylinder throwing opening, and the inner cylinder door is provided with a locking device to enable the inner cylinder door to seal the inner cylinder throwing opening.

2. A drum washing machine according to claim 1, characterized in that: the inner tube door is provided with the telescopic pivot, and the inner tube corresponds the position and is provided with the shaft hole, the pivot includes the scalable setting of one end at least and is convenient for install and dismantle.

3. A drum washing machine according to claim 2, characterized in that: the inner tube door is provided with the cavity, the cavity includes first cavity and second cavity, the pivot is including fixing the first pivot in the first cavity and scalable setting second pivot in the second cavity, first pivot and the coaxial setting of second pivot.

4. A drum washing machine according to claim 3, characterized in that: and a fixed block and an elastic piece are arranged in the second cavity, one end of the elastic piece is abutted against the positioning block, and the other end of the elastic piece is abutted against the second rotating shaft to enable the second rotating shaft to be telescopic.

5. A drum washing machine according to claim 2, characterized in that: the inner tube door is provided with the cavity, the pivot is including setting up at the cavity both ends and first pivot and the second pivot of coaxial setting, is provided with the elastic component between first pivot and second pivot, first pivot and second pivot are all scalable for the cavity.

6. A drum washing machine according to any one of claims 3 or 5, characterized in that: the rotating shaft is characterized in that a limiting groove is formed in the cavity, a limiting protrusion matched with the limiting groove is arranged outside the rotating shaft, or the limiting protrusion is arranged inside the cavity, the limiting groove matched with the limiting protrusion is arranged outside the rotating shaft, and the rotating shaft is limited in circumferential direction.

7. A drum washing machine according to claim 1, characterized in that: the locking device comprises a lock hole and a lock pin, the lock hole and the lock pin are respectively arranged on the inner barrel and the inner barrel door, and the locking device is provided with a position detection device for detecting whether the lock pin is inserted into the lock hole.

8. A drum washing machine according to claim 7, characterized in that: the locking device further comprises a lock catch, the lock hole is formed in the lock catch, the locking device further comprises a lock seat, the lock seat is provided with an avoiding hole for the lock catch to be buckled in, the lock pin is arranged on the lock seat in a telescopic mode and can be inserted into the lock hole to achieve locking, and the lock catch and/or the lock pin are/is provided with a position detection device.

9. A drum washing machine according to claim 8, characterized in that: the position detection device comprises a detection element and a detected element, the lock catch and/or the lock pin are/is provided with the detected element, the drum washing machine further comprises an outer drum and a machine shell, and the outer drum or the machine shell is provided with the detection element;

10. A control method of a drum washing machine according to claims 1-9, characterized in that: when the drum washing machine receives the signals that the lock catch and/or the lock pin are in place, whether the inner drum door is closed in place is judged.