WO2023024999A1

WO2023024999A1 - Washing machine with detection device for laundry stuck in door body

Info

Publication number: WO2023024999A1
Application number: PCT/CN2022/113050
Authority: WO
Inventors: 黄本财; 徐安沅; 李敬德; 董世江; 牛仲茜
Original assignee: 重庆海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2021-08-26
Filing date: 2022-08-17
Publication date: 2023-03-02
Also published as: CN113718479A

Abstract

A washing machine with a detection device for laundry stuck in a door body, the washing machine comprising: a box body; an outer tub; a window gasket (30); a door body (12), which can open and close a laundry feeding port (111) and which is hinged to a front plate (11); and a detection device (40), which is used for detecting whether a piece of laundry is stuck between the door body (12) and the window gasket (30), wherein the front end of the window gasket (30) is provided with a first assembly groove (31); the front plate (11) is provided with a first groove (112), which is recessed backward; and a first groove wall (1121), which is on the side of the first groove (112) that is close to the laundry feeding port (111), is assembled with the first assembly groove (31). By providing the detection device (40) for detecting whether a piece of laundry is stuck between the door body (12) and the window gasket (30), detection can be carried out before the washing machine starts to wash, thereby facilitating discovering laundry being stuck in time, thus preventing laundry from being damaged due to the rotation of an inner tub after a piece of laundry is stuck. By means of the arrangement of the first groove (112), the sealing connection assembly between the front plate (11) and the window gasket (30) can be realized, which facilitates improvement of the structural strength of the laundry feeding port (111), and facilitates forming a space for arrangement of the detection device (40) and forming an avoidance for a front detection member (41).

Description

A washing machine with a door body cloth clamp detection device

technical field

The invention belongs to the technical field of washing machines, and in particular relates to a washing machine with a door body cloth clamp detection device.

Background technique

The drum washing machine includes a box body, an outer cylinder and an inner cylinder suitably arranged in the box body, and the inner cylinder rotates in the outer cylinder when washing clothes; a clothes input port is opened on the front panel of the box body, and an openable and closed box is hinged on the front panel. The door body of the clothes inlet. A window pad is sealed between the front plate of the box body and the outer cylinder, that is, the front portion of the window pad is sealed and fixed on the clothing inlet on the front plate, and the rear portion of the window pad is sealed and fixed on the front opening of the outer cylinder.

technical problem

When washing clothes, users often put the clothes on the window mat accidentally. After closing the door, the clothes are sandwiched between the door body and the window mat, or between the door body and the front panel, and are not easy to be It was found that during the washing or dehydration process, the clothes were constantly pulled, and in severe cases, the clothes would be pulled and damaged; and the load on the motor was increased.

technical solution

The present invention aims at the above-mentioned problems in the prior art, and proposes a washing machine with a cloth trap detection device on the door body, which can detect whether there is cloth trap between the door body and the window pad, and reduce the damage to clothes caused by the trap cloth.

In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions to achieve:

A washing machine with a door body cloth jam detection device, comprising:

The box body has a front panel provided with a clothes inlet:

outer cylinder, which is located in the box;

a window gasket sealingly connected between the front panel and the outer cylinder;

a door body, which can open and close the clothes inlet and is hinged on the front panel;

A detection device, which is used to detect whether there is cloth between the door body and the window mat;

The front end of the window pad is provided with a first assembly groove, and the front panel is provided with a first groove facing backward, and the first groove is close to the first groove wall on the side of the clothes inlet Fitted with the first assembly groove; the detection device is arranged between the door body and the first groove.

Further, the detection device has a front detection part fixed on the inner side of the door body, and the front detection part is located at the front side of the first groove.

Further, a first installation groove is provided on the door body, and the front detection part is arranged at the first installation groove.

Further, the front detection part is a light sensor, and whether the light sensor receives a feedback signal within the measurement distance is used to determine whether the cloth is clamped.

Further, the measurement distance of the photosensor is set as the distance from the light emitting point of the photosensor to the rear groove wall of the first groove or the window pad along the direction of the light path.

Further, the detection device also has a rear detection part fixed in the first groove, and the front detection part has a telescopic column that can be telescopically arranged front and back. When the door body is closed and there is no clamping cloth In some cases, the telescopic column is in contact with the rear detection member.

Further, a protection block is provided in the first groove, and an accommodation opening is opened on the protection block, the rear detection part is located in the accommodation opening, and the rear end of the front detection part can extend into the Hold in the mouth.

Further, the front end surface of the protection block is located behind the vertical plane where the end surface of the window pad is located.

Further, the first groove wall is inclined outward in a direction away from the center of the clothes inlet, and the angle between the first groove wall and the rear groove wall of the first groove is It is 40°～50°.

Further, the window pad has an extension edge bent downward along the outer wall of the opening end of the first fitting groove, and the extension edge is attached to the rear groove wall of the first groove.

Further, the contact between the front detection part and the rear detection part triggers an electric signal to determine whether there is cloth between the front detection part and the rear detection part.

Further, the rear detection part is a reed switch, and a magnetic part matching the reed switch is provided in the telescopic column, and it is judged according to the distance between the reed switch and the magnetic part whether Cloth.

Further, before the washing process, the washing machine starts the detection device to detect whether the cloth is caught.

Further, multiple detection devices are provided on the washing machine.

Further, a second backward groove is provided on the front panel, and a protrusion matching the second groove is arranged on the inner side of the door body, and behind the second groove The slot wall is provided with the clothes input port.

Further, an annular first groove is provided on the rear groove wall of the second groove.

Further, the first groove and the second groove are arranged coaxially.

Further, the second groove is arranged coaxially with the clothes inlet,

Further, the second groove wall on the side of the first groove away from the window pad is parallel to the first groove wall.

Beneficial effect

Compared with the prior art, the advantages and positive effects of the present invention are: by setting a detection device for detecting whether the cloth is sandwiched between the door body and the window mat, it can be detected before the washing machine starts washing, which is conducive to timely detection Clothes are clamped to avoid clothing damage caused by the rotation of the inner cylinder after the cloth is clamped. By setting the first groove, the sealed connection and assembly between the front plate and the window pad can be realized, which is beneficial to increase the structural strength of the clothes input port, is conducive to forming a setting space for the detection device, and forms an avoidance for the front detection part.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a structural schematic diagram of a first embodiment of a washing machine with a door cloth detection device proposed by the present invention;

Fig. 2 is a schematic diagram of the explosion structure of Fig. 1;

Fig. 3 is a schematic diagram of an enlarged structure of area A in Fig. 2;

Fig. 4 is a structural schematic diagram at the front plate;

Fig. 5 is a sectional view after removing the door body in Fig. 1;

Fig. 6 is a schematic diagram of an enlarged structure of area B in Fig. 5;

Fig. 7 is a structural schematic diagram of a second embodiment of a washing machine with a door cloth clamp detection device proposed by the present invention;

FIG. 8 is a schematic diagram of an enlarged structure of region C in FIG. 7;

Fig. 9 is a structural schematic diagram of another angle of Fig. 7;

Figure 10 is a schematic diagram of the enlarged structure of the D region in Figure 9;

Fig. 11 is a cross-sectional view after removing the door assembly in Fig. 7;

Figure 12 is a schematic diagram of the enlarged structure of the E area in Figure 11;

Fig. 13 is a schematic diagram of the structure in the cloth clamping state in Fig. 12;

Fig. 14 is a structural schematic diagram of a second embodiment of a washing machine with a door cloth clamp detection device proposed by the present invention;

Figure 15 is a schematic diagram of the enlarged structure of the F area in Figure 14;

Fig. 16 is a schematic diagram of the structure in Fig. 15 under the state of clamping cloth.

BEST MODE FOR CARRYING OUT THE INVENTION

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the positional relationship shown in the drawings, and the normal use state of the washing machine Next, the side close to the user is "front", and the opposite is "back". The terminology is only used to describe the present invention and simplify the description, but does 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 addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance; features defined with "first" and "second" may express or One or more of these features are implicitly included. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Referring to Fig. 1-Fig. 6, it is the first embodiment of a washing machine with a door body cloth detection device proposed by the present invention. A washing machine with a door body cloth detection device is used to detect the door body and the front panel Whether to add cloth between them, including: box body, outer cylinder, window pad 30 and detection device 40, the box body has a front plate 11 with a clothes input port 111; in the figure, the outer cylinder only shows the front flange, and the outer cylinder The barrel front and outer barrel rear portions are not shown. The window pad 30 is sealed and connected between the front plate 11 and the outer cylinder; the door body 12 can open and close the clothes inlet 111, and the door body 12 is hinged on the front plate 11; the detection device 40 is used to detect the gap between the door body 12 and the window pad 30. Whether the cloth is sandwiched between, that is, whether the clothing is clamped by the inner door body 12. The front end of the window pad 30 is provided with a first fitting groove 31, and the front plate 11 is provided with a first groove 112 facing backward. The direction of the axis of the mouth 111 is inside; the first groove wall 1121 on the side of the first groove 112 close to the clothes inlet 111 is assembled with the first assembly groove 31, and the first groove wall 1121 is located in the first assembly groove 31. The groove 112 is an annular structure. The detection device 40 is disposed between the door body 12 and the first groove 112 , specifically, the detection device 40 has a front detection part 41 fixed inside the door body 12 , and the front detection part 41 is located in front of the first groove 112 .

In this embodiment, by setting the detection device 40 to detect whether the cloth is caught between the door body 12 and the window pad 30, it can be detected before the washing machine starts to wash, which is beneficial to find that the clothes are caught in time and avoid the rotation of the inner cylinder after the cloth is caught. resulting in clothing damage. By arranging the first groove 112, the sealed connection and assembly between the front plate 11 and the window pad 30 can be realized, which is beneficial to increase the structural strength of the clothing input port 111, and is conducive to forming a setting space for the detection device 40, forming a front detection device. Avoidance of item 41.

Referring to Fig. 6, when the cloth is caught at the detecting device 40, the clothes are caught between the door body 12 and the window pad 30, after the clothes are caught, it is determined that the part of the clothes is located between the front detecting part 41 and the first groove 112 Between the rear groove wall 1122 of the first groove 112, as long as there is an obstacle or a foreign object between the front detecting member 41 and the rear groove wall of the first groove 112, it can be judged whether the clothing is caught. Due to a front detection part 41, it can only detect whether cloth clamping occurs near it; in order to increase the accuracy, multiple detection devices 40 can be set on the washing machine.

For the detection of the door body 12 clamping cloth, the detection device 40 can use a variety of detection equipment. In this embodiment, the front detection part 41 is a light sensor, and it is determined whether the light sensor receives a feedback signal within the measurement distance. Cloth. When cloth clamping occurs at the detection device 40, the light emitted by the front detection part 41 is within the detection distance and fed back after being blocked by clothing, and it can be judged that the cloth clamping has occurred; if no cloth clamping is found, the light emitted by the front detection part 41 Within the detection distance, there is no occlusion and no feedback signal.

Specifically, the measurement distance of the photosensor is set as the distance between the light-emitting point of the photosensor and the rear groove wall 1122 of the first groove 112 or the window pad 30 along the direction of the light path; The barrel axis propagates backward in a direction parallel to the barrel axis, or inwardly and obliquely in the backward direction; according to the different propagation paths of light from the light sensor, the measurement distance is set as the light reaches the rear groove wall of the first groove 112 1122 or the propagation distance of the window pad 30, if the light emitted by the light sensor propagates backward to the rear groove wall 1122 of the first groove 112, then the measured distance is the distance from the light to the rear groove wall 1122 of the first groove 112 Propagation distance; if the light emitted by the light sensor propagates backward to the window mat, the measured distance is the propagation distance from the light to the window mat 30 .

For cloth jam detection, it should be set to close the door body of the washing machine, and after power on, start the detection device to detect; if there is cloth jam, then open the door body 20 to check and process. If there is no cloth clamp, then select the washing program.

In this embodiment, the first groove wall 1122 is inclined outward in a direction away from the center of the clothes inlet, which is beneficial to increase the stability of the first groove wall 1122 after being assembled with the first assembly groove 31, and Consistent with the inclination direction of the window glass 13 of the door body 12 at the inlet 111 , it is beneficial for the window gasket 30 to be sealed between the window glass 13 and the first groove wall 1122 . Preferably, the angle between the first groove wall 1121 and the rear groove wall 1122 of the first groove 112 is set to be 40° to 50°, more preferably the angle between the first groove wall 1121 and the rear groove wall 1122 of the first groove 112 is set to be 40° to 50°. The angle between them is 45°.

The window pad 30 has an extension edge 32 bent downward along the outer wall of the opening end of the first assembly groove 31, and the extension edge 32 fits on the rear groove wall 1122 of the first groove 112, which is beneficial to increase the contact between the window gasket 30 and the first groove. The tightness between the grooves 112, and the firmness after assembly. The extension edge 32 is located at the front side of the rear groove wall 1122 , so when the front detection element 41 is a light sensor, the light can be transmitted to the extension edge 32 .

A rearward second groove 113 is provided on the front panel 11 , and a protrusion matching the second groove 113 is provided on the inner side of the door body 12 , which facilitates the sealing and closing of the door body 12 and the front panel 11 . A clothes inlet 111 is provided on the rear wall of the second groove 113 . An annular first groove 112 is arranged on the rear groove wall of the second groove 113 , the first groove 112 and the second groove 113 are arranged coaxially, and the second groove 113 is coaxial with the clothes inlet 111 . The second groove wall 1123 on the side of the first groove 112 far away from the window mat 30 is arranged parallel to the first groove wall 1121, which is conducive to increasing the structural strength of the first groove 112, and is conducive to forming a larger detection device that can be installed 40 spaces.

Referring to Fig. 7-Fig. 13, it is the second embodiment of a washing machine with a door cloth detection device proposed by the present invention. The main difference between this embodiment and the first embodiment is that the detection device 40 is different. For different detection structures, others can adopt the same structure as that of the first embodiment.

A washing machine with a door cloth clamping detection device is used to detect whether there is cloth between the door body and the front plate, including: a box body, an outer cylinder, a window pad 30 and a detection device 40, and the box body has a clothes input port 111 The front plate 11; In the figure, the outer cylinder only shows the front flange, and the front and rear parts of the outer cylinder are not shown. The window pad 30 is sealed and connected between the front plate 11 and the outer cylinder; the door body 12 can open and close the clothes inlet 111, and the door body 12 is hinged on the front plate 11; the detection device 40 is used to detect the gap between the door body 12 and the window pad 30. Whether the cloth is sandwiched between, that is, whether the clothing is clamped by the inner door body 12. The front end of the window pad 30 is provided with a first fitting groove 31, and the front plate 11 is provided with a first groove 112 facing backward. The direction of the axis of the mouth 111 is inside; the first groove wall 1121 on the side of the first groove 112 close to the clothes inlet 111 is assembled with the first assembly groove 31, and the first groove wall 1121 is located in the first assembly groove 31. The groove 112 is an annular structure. The detection device 40 has a front detection part 41 fixed inside the door body 12 , and the front detection part 41 is located in front of the first groove 112 .

When the cloth is caught at the detection device 40, the clothes are caught between the door body 12 and the window pad 30. After the clothes are caught, it is confirmed that the part of the clothes is located between the front detection part 41 and the rear groove wall 1122 of the first groove 112. During this time, as long as there is an obstacle or foreign matter between the front detection part 41 and the rear groove wall of the first groove 112, it can be judged whether the clothes are caught. Due to a front detection part 41, it can only detect whether cloth clamping occurs near it; in order to increase the accuracy, multiple detection devices 40 can be set on the washing machine.

In this embodiment, the detection device 40 also has a rear detection part 42 fixed in the first groove 112 , and the front detection part 41 has a front and rear telescopic column that can be stretched into the first groove 112 . When the door body 12 is closed and there is no cloth clamp, the telescopic column is in contact with the rear detection piece 42; when there is a cloth clamp at the detection device 40, there is clothing between the telescopic column and the rear detection piece 42, which is spaced.

In this embodiment, the contact between the front detection part 41 and the rear detection part 42 triggers an electrical signal to determine whether there is cloth between the front detection part 41 and the rear detection part 42 . When the electric signal is triggered, there is cloth clamping; if the electric signal is not triggered, there is no cloth clamping. In order to further increase the accuracy of detection, avoid the situation that the clothes are clamped between the front detection part 41 and the rear detection part 42, and the electric signal is triggered by the clothes going out; The spacing between the rear detection members 42 increases. A protective block 43 is provided in the first groove 112, and a receiving opening 431 is opened on the protective block 43. The rear detection part 42 is located in the receiving opening 431, and the rear end of the front detecting part 41 can extend into the receiving opening 431. . In the case of cloth clamping, the clothes are clamped between the front detection part 41 and the front end of the accommodation opening 431, and the front detection part 41 is blocked from extending into the accommodation opening 431, so that the front detection part 41 does not contact the rear detection part 42, And the spacing is relatively large, so there will be no triggering of electrical signals. When there is no cloth clamp, the front detection part 41 protrudes into the receiving opening 431 and contacts the rear detection part 42 to trigger an electrical signal. Setting the front end of the protection block 43 behind the vertical plane where the end surface of the window pad 30 is located is beneficial to protect the protection block 43 and prevent the protection block from being touched.

The window pad 30 has an extension edge 32 bent downward along the outer wall of the opening end of the first assembly groove 31, and the extension edge 32 fits on the rear groove wall 1122 of the first groove 112, which is beneficial to increase the contact between the window gasket 30 and the first groove. The tightness between the grooves 112, and the firmness after assembly. The extended edge 32 is located at the front side of the rear groove wall 1122 .

Embodiments of the present invention

Referring to Fig. 14-Fig. 16, it is the third embodiment of a washing machine with a door cloth detection device proposed by the present invention. The main difference between this embodiment and the second embodiment is that the detection device 40 is different. For different detection structures, others can adopt the same structure as that of the second embodiment.

In this embodiment, the detection device 40 also has a rear detection member 42 fixed in the first groove 112, and the front detection member 41 has a telescopic column 411 that can be stretched front and rear, and the telescopic column 411 can extend into the first groove 112. Inside. When the door body 12 is closed and there is no cloth clamp, the telescopic column 411 is in contact with the rear detection part 42; when there is a cloth clamp at the detection device 40, there is clothing between the telescopic column 411 and the rear detection part 42, which is detected. interval.

In this embodiment, the rear detection part 42 is a reed switch, and a magnetic part 412 matching the reed switch is provided in the telescopic column 411 , and whether the cloth is clamped is judged according to the distance between the reed switch and the magnetic part 412 . When the telescopic column 411 is in contact with the rear detection part 42, the distance between the reed switch and the magnetic part 412 is D1; if there is cloth clamping, the distance D2 between the reed switch and the magnetic part 412 must be greater than D1.

In order to further increase the accuracy of detection and avoid whether the clothes are clamped between the front detection part 41 and the rear detection part 42, the distance between the reed switch and the magnetic part 412 does not change much, especially when the clothes are thinner; It is provided that the distance between the front detection part 41 and the rear detection part 42 is increased when there is a cloth clamp.

A protective block 43 is provided in the first groove 112, and a receiving opening 431 is opened on the protective block 43. The rear detection part 42 is located in the receiving opening 431, and the rear end of the front detecting part 41 can extend into the receiving opening 431. . In the case of cloth clamping, the clothes are clamped between the front detection part 41 and the front end of the accommodation opening 431, and the front detection part 41 is blocked from extending into the accommodation opening 431, so that the front detection part 41 does not contact the rear detection part 42, And the distance is large. When there is no cloth clamp, the front detection part 41 protrudes into the accommodating opening 431 and contacts the rear detection part 42 , and the distance between the reed switch and the magnetic part 412 is D1 . The distance between the front end of the accommodating opening 431 and the front end of the rear detection part 42 is D3; in the case of cloth clamping, the distance D2 between the reed switch and the magnetic part 412 is greater than D1 and less than or equal to the sum of D1 and D3.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still understand the foregoing embodiments. Modifications are made to the technical solutions described, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims

A washing machine with a door body clamping detection device, characterized in that it comprises:

The box body has a front plate provided with a clothes inlet;

an outer cylinder, which is located in the box;

a window gasket sealingly connected between said front panel and outer cylinder;

a door body, which can open and close the clothes inlet and is hinged on the front panel;

A detection device, which is used to detect whether a cloth is sandwiched between the door body and the window mat;

The front end of the window pad is provided with a first assembly groove, and the front panel is provided with a first groove facing backward, and the first groove is close to the first groove wall on the side of the clothes inlet Fitting with the first fitting groove;

The detection device is arranged between the door body and the first groove.
The washing machine according to claim 1, wherein the detection device has a front detection part fixed on the inner side of the door body, and the front detection part is located at the front side of the first groove.
The washing machine according to claim 2, wherein the front detecting member is a photosensor, and whether the photosensor receives a feedback signal within a measuring distance is used to determine whether the cloth is clamped.
The washing machine according to claim 3, wherein the measurement distance of the photosensor is set so that the luminous point of the photosensor is along the light path direction to the rear groove wall of the first groove or the window. distance between pads.
The washing machine according to claim 2, wherein the detection device further has a rear detection part fixed in the first groove, and the front detection part has a telescopic column that can be telescopically arranged front and back, and in the When the door body is closed and there is no cloth clamp, the telescopic column is in contact with the rear detection member.
The washing machine according to claim 5, wherein a protection block is provided in the first groove, and an accommodation opening is opened on the protection block, the rear detection part is located in the accommodation opening, and the front detection part is located in the accommodation opening. The rear end of the detection piece can extend into the accommodating opening.
The washing machine according to claim 5, wherein the contact between the front detection part and the rear detection part triggers an electric signal to determine whether there is cloth between the front detection part and the rear detection part.
The washing machine according to claim 5, wherein the rear detecting member is a reed switch, and a magnetic piece matching the reed switch is provided in the telescopic column, and according to the connection between the reed switch and The distance between the magnetic parts determines whether the cloth is clamped.
The washing machine according to any one of claims 1 to 8, characterized in that, the first groove wall is inclined outward in a direction away from the center of the clothes inlet, and the first groove wall and The included angle between the rear groove walls of the first groove is 40°-50°.
The washing machine according to any one of claims 1 to 8, characterized in that, the window pad has an extended edge bent downward along the outer wall of the opening end of the first assembly groove, and the extended edge is attached to the on the rear groove wall of the first groove.