CN218372848U

CN218372848U - Drum washing machine

Info

Publication number: CN218372848U
Application number: CN202221912589.9U
Authority: CN
Inventors: 袁佶鹏; 刘晓春; 朱凯; 刘凯; 程宝珍
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-01-24
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a drum washing machine, which comprises a shell and an inner drum arranged in the shell, wherein a machine door is arranged at a clothes putting port of the shell in an openable and closable way, an inner drum door is arranged at an inner drum port of the inner drum in an openable and closable way, a detection device is arranged at the position where the inner drum door at an opening position is contacted with the machine door, and the detection device is triggered and generates a trigger signal under the action of the inner drum door or the machine door at the contact position; the detection device is arranged at the position, in the opening position, of the inner cylinder door, which is in contact with the machine door, and senses the automatic opening of the inner cylinder door, so that the detection that the inner cylinder door is not closed in place is realized.

Description

Drum washing machine

Technical Field

The utility model belongs to the technical field of domestic appliance, specifically speaking relates to a drum type washing machine.

Background

The washing machine is 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 the life of people. However, the existing washing machine generally comprises an outer cylinder and an inner cylinder which is rotatably arranged in the outer cylinder, a plurality of dewatering holes are distributed on the cylinder wall of the inner cylinder, and in the process of washing clothes, the washing water between the inner cylinder and the outer cylinder cannot be utilized, so that the waste of the washing water between the inner cylinder and the outer cylinder is caused, and the dirt generated by the clothes in the washing process can be deposited between the inner cylinder and the outer cylinder along with the water flow entering between the inner cylinder and the outer cylinder, along with the long-time use of the washing machine, the long-time accumulation of the dirt between the inner cylinder and the outer cylinder can seriously affect the washing effect on the clothes, thereby reducing the use experience of users.

In order to solve the above problems, there is a drum washing machine having a non-porous inner tub, in which an inner tub door is installed at an opening of the non-porous inner tub to form an inner chamber capable of independently containing washing water, so that the washing water is contained in the inner tub during washing and rinsing processes, and there is no water between the inner tub and the outer tub, thereby solving the problem of dirt between the inner tub and the outer tub and saving the amount of washing water. It is known from the structural characteristics of the drum washing machine with the inner drum without holes that the maintenance of the tightness of the inner drum door is the key to form the inner chamber of the inner drum which can independently contain washing water during the washing and rinsing processes, and that serious safety accidents can be caused if the inner drum door is not locked or not locked in place during the dehydration process of the high-speed rotation of the inner drum. Therefore, the detection of the in-place closing of the inner drum door is the key to the normal operation of the drum washing machine with the inner drum without holes.

In view of this special the utility model is put forward.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming prior art's is not enough, provides a drum type washing machine, through be provided with detection device on the position that the interior section of thick bamboo door that is in the open position contacted with the quick-witted door, detection device can respond to the automation of interior section of thick bamboo door and open, reaches the purpose that realizes closing the not in place detection to interior section of thick bamboo door.

In order to solve the technical problem, the utility model adopts the following basic concept:

the utility model provides a drum type washing machine, including the shell with locate the inner tube in the shell, the clothing that the shell has is put in mouth department and is installed the quick-witted door openly closed, but inner tube mouth department that the inner tube has installs inner tube door openly closed, is in and is provided with detection device on the position that inner tube door and the quick-witted door that opens the position contacted, detection device receives the effect of inner tube door or quick-witted door and is triggered, produces triggering signal in the position that contacts.

Furthermore, the detection device is arranged on the inner cylinder door or the machine door and is provided with a pressing part, and at least part of the pressing part is exposed on one side of the inner cylinder door facing the machine door or one side of the machine door facing the inner cylinder door.

Further, when the machine door is closed and the inner cylinder door at the minimum opening position is contacted with the machine door, a first position point contacted with the inner cylinder door is formed on the machine door, when the machine door is completely opened and the inner cylinder door at the maximum opening position is contacted with the machine door, a second position point contacted with the inner cylinder door is formed on the machine door, and the pressing part exposed out of the machine door covers the area between the first position point and the second position point.

Further, the detection device comprises a pressing trigger component and a pressure switch, wherein the pressing trigger component comprises a cylindrical sliding part extending axially, a pressing part formed by protruding an end wall of the cylindrical sliding part towards the inner cylinder door and extending radially, and a trigger part formed by protruding the top of the periphery of the cylindrical sliding part upwards and triggering the pressure switch.

Furthermore, the cross section of the upper direction and the lower direction of the trigger part is triangular, the side face corresponding to a right-angle side of the trigger part is arranged at the top of the periphery of the sliding part, the side face corresponding to the bevel edge of the trigger part faces the inner cylinder door, and the side face corresponding to the bevel edge of the trigger part is arc-shaped and extends convexly towards the inner cylinder door.

Furthermore, a claw is arranged on the periphery of the cylindrical sliding part and comprises a connecting arm extending in the axial direction and a claw part, one end of the connecting arm facing the inner cylindrical door is connected with the periphery of the cylindrical sliding part, the other end of the connecting arm is provided with the claw part, and the claw part axially slides on the door.

Furthermore, the pressure switch comprises a square installation part arranged at the top of the cylindrical sliding part and a sensing part arranged on the bottom wall of the square installation part, the sensing part extends towards one side of the triggering part, and the top of the triggering part triggers the sensing part at the bottom end of the sensing part or the top of the triggering part axially slides over the sensing part to be released from triggering with the sensing part.

Further, detection device still includes bar flexure strip, and bar flexure strip from the top down inclines gradually to interior bobbin door, and one side, the bottom centre gripping of square installation department are located on the top of bar flexure strip between the top and the response position of trigger part, and bar flexure strip extrudees under the support at trigger part top and triggers the response position, or bar flexure strip breaks away from the support and the response position at trigger part top and removes triggering.

Further, bar flexure strip, response portion and trigger part distribute in proper order to inboard direction along the outside of inner tube, and the response position downwardly extending exceeds the top of trigger part, and the side cover response position is gone up to the bar flexure strip, the tip of the periphery centre gripping bar flexure strip at the turning at trigger part top and response position.

Further, the inside cavity of quick-witted door forms the cavity, is equipped with the annular support piece coaxial with quick-witted door in the cavity, and pressure switch is fixed in on the annular support piece, and annular support piece sets up two bellyings that distribute from top to bottom towards one side of interior tube door, and the tube-shape sliding part centre gripping is between two bellyings, slides between two bellyings, and at least part presses the splenium embedding cavity in.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:

the detection device is arranged at the position, in the opening position, of the inner cylinder door, which is in contact with the machine door, and senses the automatic opening of the inner cylinder door, so that the detection that the inner cylinder door is not closed in place is realized.

The following describes embodiments of the present invention in further detail with reference to the attached 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 undue limitation. 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 also be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic structural view of a drum washing machine according to an embodiment of the present invention;

fig. 2 is a schematic position diagram of a first site and a second site formed on a door according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an assembly of the annular supporting member and the pressure switch provided by the embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at C;

fig. 5 is a schematic structural diagram of an assembly of the outer frame, the annular supporting member and the pressure switch provided by the embodiment of the present invention;

FIG. 6 is an enlarged view of FIG. 5 at B;

fig. 7 is a schematic structural diagram of a pressure switch according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an annular supporting member provided by an embodiment of the present invention;

fig. 9 is an enlarged view of fig. 8 at a.

Icon: 1-a housing; 11-a front panel; 12-a machine door; 121-inner frame; 122-outer frame; 2-inner cylinder; 21-inner cylinder door; 2-a detection device; 21-a pressing member; 211-cylindrical sliding part; 212-a pressing part; 213-jaws; 2131-linker arm; 2132-a claw part; 22-a trigger member; 221-a trigger part; 23-a pressure switch; 231-square mounting part; 232-a sensing part; 233-strip elastic piece; 3-an annular support; 31-a boss; 311-sliding mounting holes; 32-a via hole; 33-a guide; 34-a fixed part; 4-a support frame.

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 rather to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not 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", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a drum washing machine, including shell 1 with locate the inner tube 2 in the shell 1, the clothing that shell 1 has is put in a mouthful department and is installed door 12 openly closed, the inner tube 2 that inner tube 2 has a mouthful department and installs inner tube door 21 openly closed, be in and be provided with detection device 2 on the position that inner tube door 21 and door 12 that open the position contacted, detection device 2 receives inner tube door 21 or door 12's effect and is triggered, produces triggering signal in the position that contacts.

The embodiment of the utility model provides an in, through set up detection device 2 on the position that contacts of interior tube door 21 that is in the open position and quick-witted door 12, the automation of tube door 21 is opened in detection device 2 response, realizes closing the not in place detection to interior tube door 21

The drum washing machine comprises a shell 1 and an inner drum 2 which is rotatably arranged in the shell 1, wherein the shell 1 is provided with a front panel 11, a clothes throwing opening is arranged on the front panel 11, a machine door 12 for opening and closing the clothes throwing opening is arranged at the clothes throwing opening, an opening of the inner drum 2 is arranged on the inner drum 2, an opening of the inner drum 2 is provided with an inner drum door 21 for opening and closing the opening of the inner drum 2, the inner drum door 21 is arranged right opposite to the machine door 12, the inner drum 2 can independently contain washing water when the clothes are washed by the inner drum 2, and the opening of the inner drum 2 is sealed by the inner drum door 21 when the clothes are washed by the rotation of the inner drum 2;

aiming at the drum washing machine, the control method comprises the following steps: when clothes are washed, the inner drum 2 rotates, the inner drum door 21 is closed to seal the inner drum 2, the inner drum 2 drives the inner drum door 21 to rotate, the detection device 2 is triggered and generates a trigger signal when the inner drum door 21 is closed, and if the detection device 2 generates the trigger signal all the time, the inner drum door 21 is always in a closed state when the inner drum 2 rotates to wash the clothes;

in the process of washing the clothes, the inner drum 2 rotates unstably due to the eccentricity of the clothes in the inner drum 2, so that the inner drum door 21 is opened automatically, or the inner drum door 21 is opened automatically because a user does not close the inner drum door 21 in place, the opened inner drum door 21 impacts the machine door 12, the detection device 2 is triggered under the impact action of the inner drum door 21, a trigger signal is not generated, and if the detection device 2 does not sense the trigger signal all the time, the inner drum door 21 is opened, and the inner drum door 21 is not closed in place.

As shown in fig. 1, in the embodiment of the present invention, the detecting device 2 is disposed on the inner door 21 or the door 12, the detecting device 2 has a pressing portion 212, and at least a portion of the pressing portion 212 is exposed on one side of the inner door 21 facing the door 12 or one side of the door 12 facing the inner door 21.

In the embodiment of the utility model, the detection device 2 can be arranged on the inner barrel door 21 and can also be arranged on the machine door 12, the range of the arrangement position of the detection device 2 is increased, and the detection device 2 can be selected to be arranged on the machine door 12 or the inner barrel door 21 according to the difficulty of installation and disassembly of the detection device 2 and the sensitivity of the detection device 2 for generating a trigger signal after the impact action;

the detection device 2 is provided with a pressing part 212, at least part of the pressing part 212 is exposed outside the machine door 12 or the inner cylinder door 21, and the pressing part 212 is used for receiving the impact of the inner cylinder door 21, so that the detection device 2 is deactivated and does not generate a trigger signal;

as shown in fig. 1 and 2, specifically, when the door 12 is closed and the inner door 21 in the minimum open position contacts the door 12, a first point contacting the inner door 21 is formed on the door 12, and when the door 12 is fully opened and the inner door 21 in the maximum open position contacts the door 12, a second point contacting the inner door 21 is formed on the door 12, and the pressing portion 212 exposed to the door 12 covers an area between the first point and the second point.

The detection device 2 is arranged on the machine door 12; when the inner cylinder door 21 strikes the machine door 12 and contacts the machine door 12, the inner cylinder door 21 in the minimum opening position contacts the machine door 12 and the inner cylinder door 21 in the maximum opening position contacts the machine door 12; the door 12 is closed, and the inner drum door 21 has a minimum opening angle in order to contact the door 12, and the inner drum door 21 is considered to be in a minimum opening position; the door 12 is fully opened, and the inner cylinder door 21 has a maximum opening angle in order to contact the door 12, and the inner cylinder door 21 is considered to be in the maximum opening position;

the pressing part 212 exposed out of the door 12 can accurately receive the impact pressing of the inner tube door 21 as long as the pressing part 212 covers the area between the first position and the second position, and the area covered by the pressing part 212 is larger than or equal to the area between the first position and the second position.

Preferably, when the inner cylinder door 21 is normally opened and no drop dislocation occurs, the region between the first position and the second position extends radially, and is located in the middle of the upper and lower directions of the inner cylinder door 21 and on the left side, and the first position is close to the left edge of the inner cylinder door 21 relative to the second position.

As shown in fig. 3, 4 and 7, in the embodiment of the present invention, the detecting device 2 includes a pressing trigger 221 and a pressure switch 23, the pressing trigger 221 includes an axially extending cylindrical sliding portion 211, a radially extending pressing portion 212 formed by protruding an end wall of the cylindrical sliding portion 211 toward the inner door 21, and a trigger 221 formed by protruding an outer periphery of the cylindrical sliding portion 211 upward.

In the embodiment of the present invention, the pressing triggering part 221 includes a pressing part 21 and a triggering part 221 22, the pressing triggering part 221 includes an axially extending cylindrical sliding part 211, a pressing part 212, and a triggering part 221, the pressing part 21 includes a cylindrical sliding part 211 and a pressing part 212, the triggering part 221 includes a triggering part 221, when the inner door 21 is closed, the cylindrical sliding part 211, the pressing part 212, and the triggering part 221 are in the first position, and the triggering part 221 triggers the pressure switch 23; the inner cylinder door 21 automatically opens and impacts the pressing part 212, the cylinder sliding part 211 axially slides to the second position, and simultaneously drives the pressing part 212 and the trigger part 221 to slide to the second position, and the trigger part 221 and the pressure switch 23 are released from triggering;

the machine door 12 comprises an inner frame 121 and an outer frame 122, the inner frame 121 and the outer frame 122 are fastened with each other to form a cavity, an annular supporting member 3 which is identical to the machine door 12 in circumference is arranged in the cavity, the outer frame 122 is annular, the annular supporting member 3 is embedded into the through hole 32, one side of the annular supporting member 3 facing the inner door is attached to the inner frame 121, and one side of the annular supporting member 3, which is back to the inner door 21, is abutted to door glass arranged outside the outer frame 122;

the cylindrical sliding part 211 is hollow, the end wall of one axial end of the cylindrical sliding part 211 protrudes towards the inner cylinder door 21 to form a pressing part 212, the pressing part 212 extends in the radial direction and is in a long strip-shaped structure, the radially extending area formed between the first position point and the second position point can be covered, and the area impacted by the inner cylinder door 21 is increased.

The periphery of one end of the cylindrical sliding part 211 radially protrudes to form an annular protruding part which protrudes to the inner cylinder door 21 to form a strip-shaped pressing part 212 with a hollow interior; a claw 213 is arranged at one end of the annular convex part, which is back to the inner cylinder 2, the claw 213 comprises a connecting arm 2131 and a claw part 2132, the connecting arm 2131 extends in the axial direction, one end, which faces the inner cylinder door 21, is connected with the outer periphery of the cylindrical sliding part 211, the other end is provided with a claw part 2132, and the claw part 2132 slides on the machine door 12 in the axial direction;

the annular protrusion extends axially back to one side of the inner cylinder door 21 to form a connecting arm 2131, and the connecting arm 2131 is spaced from the cylindrical sliding part 211.

The structure of the detection device 2 is as follows: the detection device 2 comprises a pressing trigger part 221 and a pressure switch 23, and the structure of the detection device 2 can also be as follows: the detection device 2 includes a press trigger 221 and a pressure sensor, and the like.

As shown in fig. 8 and 9, two protrusions 31 are disposed on one side of the annular support 3 facing the inner door 21, a sliding mounting hole 311 is disposed on each protrusion 31, the cylindrical sliding portion 211 is clamped between the two protrusions 31, and the claw portion 2132 of the claw 213 is inserted into the sliding mounting hole 311 to slide in the sliding mounting hole 311.

The protruding part 31 at the lower part is a strip shape extending in the radial direction, two sliding mounting holes 311 distributed in the radial direction are arranged on the protruding part 31, wherein one sliding mounting hole 311 is opposite to the sliding mounting hole 311 at the upper part; the bottom of the boss 31 located at the lower part is provided with a support rib, so that the support strength of the boss is improved.

At least a part of the pressing portion 212 is fitted into the cavity through the inner frame 121 toward the side of the inner door 21, and the pressing portion 212 can slide on the inner frame 121;

the annular support 3 protrudes towards one side of the inner barrel door 21 to form a guide part 33 with a hollow interior, one end of the cylindrical sliding part 211 is open, and the cylindrical sliding part 211 is embedded into the guide part 33 and slides on the guide part 33; inside being equipped with reset spring of tube-shape sliding portion 211, reset spring axial extension, reset spring's one end is stretched into the guide part 33 and is connected with annular support piece 3, and the other end is connected in guide part 33, provides the restoring force for guide part 33, and guide part 33 is located between two location archs of arranging from top to bottom.

The cross section of the triggering part 221 in the vertical direction is triangular, the side corresponding to one right-angle side of the triggering part 221 is arranged at the top of the periphery of the sliding part, the side corresponding to the hypotenuse of the triggering part 221 faces the inner cylinder door 21, and the side corresponding to the hypotenuse of the triggering part 221 is arc-shaped and protrudes towards the inner cylinder door 21.

As shown in fig. 3, 4 and 7, in the embodiment of the present invention, the pressure switch 23 includes a square installation portion 231 at the top of the cylindrical sliding portion 211 and a sensing portion 232 at the bottom wall of the square installation portion 231, the sensing portion 232 extends toward one side of the triggering portion 221, and the top of the triggering portion 221 triggers the sensing portion at the bottom end of the sensing portion 232 or the top of the triggering portion 221 slides axially through the sensing portion to release the trigger from the sensing portion.

In the embodiment of the present invention, when the inner door 21 is closed, the tubular sliding portion 211, the pressing portion 212 and the triggering portion 221 are located at the first position, and the top of the triggering portion 221 triggers the sensing portion at the bottom end of the sensing portion 232; the inner cylinder door 21 automatically opens and impacts the pressing part 212, the cylindrical sliding part 211 axially slides to a second position, meanwhile, the pressing part 212 and the triggering part 221 are driven to slide to the second position, and the top of the triggering part 221 axially slides through the sensing part 232 and releases the triggering with the sensing part;

the detection device 2 further comprises a strip-shaped elastic piece 233, the strip-shaped elastic piece 233 gradually inclines towards the inner cylinder door 21 from top to bottom, the top end of the strip-shaped elastic piece 233 is arranged on one side of the square installation part 231, the bottom end of the strip-shaped elastic piece 233 is clamped between the top of the trigger part 221 and the induction part, the strip-shaped elastic piece 233 extrudes the trigger induction part under the support of the top of the trigger part 221, or the strip-shaped elastic piece 233 is separated from the support and the induction part of the top of the trigger part 221 to release the trigger;

further, the strip-shaped elastic piece 233, the sensing part 232 and the triggering part 221 are sequentially distributed along the direction from the outer side to the inner side of the inner cylinder 2, the sensing part extends downwards to exceed the top of the triggering part 221, the upper side face of the strip-shaped elastic piece 233 covers the sensing part, and the corner of the top of the triggering part 221 and the periphery of the sensing part clamp the end part of the strip-shaped elastic piece 233.

The triggering part 221 triggers the sensing part 232 by using the strip-shaped elastic sheet 233, the sensing part 232 is columnar, a sensing part at the bottom end of the sensing part is hemispherical, the upper side surface of the strip-shaped elastic sheet 233 wraps the sensing part along the direction from the outer side to the inner side of the inner cylinder 2, the top of the sensing part 232 and the top of the triggering part 221 are overlapped, and the end part of the strip-shaped elastic sheet 233 is clamped at the overlapped part;

when the pressure switch 2 is triggered, the triggering part 221 supports the strip-shaped elastic sheet 233, the sensing part of the sensing part 232 presses the strip-shaped elastic sheet 233 downwards, and the strip-shaped elastic sheet 233 extrudes the sensing part, so that the sensing part is always triggered; when the pressure switch 2 is not triggered, the top of the trigger part 221 extrudes the strip-shaped elastic piece 233 to slide, the position of the trigger part 221 changes, the clamping of the strip-shaped elastic piece 233 is not carried out, the strip-shaped elastic piece 233 is separated from the sensing part, and the sensing part is not triggered;

since the cross section of the trigger 221 in the vertical direction is triangular, the trigger 221 can be separated from the sensor 232 as quickly as possible.

As shown in fig. 5, 6, 8 and 9, a through hole 32 is formed in the annular support member 3, the pressure switch 23 further includes a support frame 4, the support frame 4 includes a first mounting plate and a second mounting plate, the first mounting plate is fixed on one side of the annular support member 3 facing the inner cylinder door 21 through a fixing portion 34, a square mounting portion 231 is formed on one side of the second mounting plate, the second mounting plate penetrates through the through hole 32, and the support frame 4 supports the pressure switch 23, so that stability of the pressure switch 23 is improved; the fixing portion 34 is a fixing hole; the through holes 32 are provided above all the bosses.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above embodiments, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A drum washing machine comprises a shell and an inner drum arranged in the shell, wherein a machine door is arranged at a clothes feeding port of the shell in an openable and closable manner, and an inner drum door is arranged at an inner drum port of the inner drum in an openable and closable manner.

2. A drum washing machine according to claim 1, characterized in that the detection device is arranged on the inner drum door or the machine door, and the detection device is provided with a pressing part, at least part of which is exposed on one side of the inner drum door facing the machine door or one side of the machine door facing the inner drum door.

3. A drum washing machine according to claim 2, characterized in that when the door is closed and the inner drum door in the minimum opening position is in contact with the door, a first point in contact with the inner drum door is formed on the door, and when the door is fully opened and the inner drum door in the maximum opening position is in contact with the door, a second point in contact with the inner drum door is formed on the door, and the pressing portion exposed to the door covers an area between the first point and the second point.

4. A drum washing machine according to claim 3, characterized in that the detection device comprises a press trigger member and a pressure switch, the press trigger member comprises an axially extending cylindrical sliding portion, a radially extending pressing portion formed by an end wall of the cylindrical sliding portion projecting toward the inner drum door, and a trigger portion formed by an outer peripheral top of the cylindrical sliding portion projecting upward and triggering the pressure switch.

5. A drum washing machine according to claim 4, characterized in that the cross section of the triggering portion in the up-down direction is triangular, the side corresponding to one right-angle side of the triggering portion is arranged at the top of the outer periphery of the sliding portion, the side corresponding to the oblique side of the triggering portion faces the door of the inner drum, and the side corresponding to the oblique side of the triggering portion is arc-shaped and protrudes towards the door of the inner drum.

6. A drum washing machine according to claim 4, characterized in that the cylindrical sliding part is provided with a claw on its outer periphery, the claw includes a connecting arm extending in the axial direction and a claw part, one end of the connecting arm facing the inner drum door is connected to the outer periphery of the cylindrical sliding part, and the other end is provided with a claw part which slides in the axial direction on the door.

7. A drum washing machine according to claim 4, characterized in that the pressure switch comprises a square mounting part arranged on the top of the cylindrical sliding part and a sensing part arranged on the bottom wall of the square mounting part, the sensing part extends towards one side of the triggering part, and the top of the triggering part triggers the sensing part at the bottom end of the sensing part or the top of the triggering part axially slides over the sensing part to be released from triggering with the sensing part.

8. A drum washing machine according to claim 7, characterized in that the detection device further comprises a strip-shaped elastic sheet, the strip-shaped elastic sheet gradually inclines towards the inner drum door from top to bottom, the top end of the strip-shaped elastic sheet is arranged on one side of the square installation part, the bottom end of the strip-shaped elastic sheet is clamped between the top of the trigger part and the sensing part, and the strip-shaped elastic sheet presses the triggering sensing part under the support of the top of the trigger part or the strip-shaped elastic sheet is separated from the support and sensing part of the top of the trigger part to release triggering.

9. A drum washing machine as claimed in claim 8, characterized in that the strip-shaped elastic sheet, the sensing part and the triggering part are sequentially distributed along the outside to inside direction of the inner drum, the sensing part extends downwards to the top beyond the triggering part, the upper side of the strip-shaped elastic sheet covers the sensing part, and the corner of the top of the triggering part and the periphery of the sensing part clamp the end of the strip-shaped elastic sheet.

10. A drum washing machine according to any one of claims 4-9 characterized in that the door is hollow to form a cavity, a ring-shaped support member coaxial with the door is arranged in the cavity, the pressure switch is fixed on the ring-shaped support member, two protrusions are arranged on one side of the ring-shaped support member facing the inner drum door, the two protrusions are distributed up and down, the cylindrical sliding part is clamped between the two protrusions and slides between the two protrusions, and at least part of the pressing part is embedded in the cavity.