Washing machine door body foreign matter sensing structure and roller washing machine door

Abstract

The utility model discloses a washing machine door body foreign matter sensing structure and a roller washing machine door, and relates to the technical field of washing machine manufacturing, the technical scheme is that the washing machine door foreign matter sensing structure comprises a first sensing part arranged on a machine door of a washing machine, and the sensing side of the first sensing part faces the roller direction of the washing machine; the second sensing part is arranged on the side portion of a clothes putting opening of the washing machine, the sensing side of the second sensing part is arranged in the direction away from the washing machine body, and the second sensing part corresponds to the first sensing part; when the machine door of the washing machine is normally closed, the sensing side of the first sensing part is attached to the sensing side of the second sensing part; when the first sensing part and the second sensing part are attached to each other, a circuit connection signal can be fed back. The sensing structure of the washing machine door has the advantages of being capable of detecting whether clothes are clamped by the washing machine door or not within the set sensing area range. The sensing structure can provide a simple direct contact sensing signal acquisition output for the roller washing machine, and is used as a safety detection structure before the washing machine runs.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machine manufacturing, in particular to a washing machine door foreign body sensor structure and a drum washing machine door. Background Art

[0002] With the development of science and technology, more and more intelligent home appliances are applied to our daily life, and washing machines are no exception. Intelligent washing machines have the advantages of mobile phone APP control, voice control, automation, etc.

[0003] Drum washing machines have many advantages and are loved by more and more families. However, due to its own structure, the door of the washing machine opens to the front. And because most families place drum washing machines on the ground, the door is relatively low. If you are not careful when putting clothes in, the door may get caught in the clothes. However, both traditional drum washing machines and smart drum washing machines currently do not have the function of detecting clothes or foreign objects with the door. When clothes or foreign objects are caught between the door and the drum, if they are not discovered in time or handled improperly, if the washing machine continues to run, it will cause certain damage to the clothes and the washing machine. More seriously, it may cause other unknown safety hazards. Utility Model Content

[0004] In view of one of the deficiencies of the prior art, the utility model provides a washing machine door foreign body sensor structure and a drum washing machine door, which solves the problem of detecting foreign bodies caught in the washing machine door.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a foreign body sensor structure for a washing machine door, comprising:

[0006] The first sensor part is arranged on the door of the washing machine, and the sensing side thereof is arranged toward the drum direction of the washing machine;

[0007] A second sensor part is arranged at a side of the clothes loading port of the washing machine, with a sensing side thereof facing away from the washing machine body, and the second sensor part is arranged corresponding to the first sensor part;

[0008] The sensing sides of the first sensing part and the second sensing part are both fan-shaped annular structures corresponding to the clothes loading port of the washing machine; when the door of the washing machine is normally closed, the sensing side of the first sensing part and the sensing side of the second sensing part are in contact with each other; when the first sensing part and the second sensing part are in contact with each other, a circuit connection signal can be fed back;

[0009] The degree α of the central angle between the first sensing part and the second sensing part satisfies 180°≤α≤45°.

[0010] Preferably, a central angle α between the first sensing portion and the second sensing portion is 120°.

[0011] Preferably, the first sensing unit includes:

[0012] The circuit board is in the shape of a fan-shaped ring as a whole, and the sensor circuit and corresponding components are arranged on the board;

[0013] The first sensing element is arranged on the circuit board in the direction of the drum of the washing machine, and is in a sector-shaped ring shape as a whole, and a plurality of sensing contacts are evenly distributed along the arc of the sector.

[0014] Preferably, the sensing contact is conductive and elastic;

[0015] The portion where the second sensing portion contacts the sensing contact of the first sensing element is made of a conductive material.

[0016] Preferably, the first induction element further comprises:

[0017] The connecting plate is a fan-shaped annular structure corresponding to the circuit board, and the sensing contact is arranged on one side of the connecting plate;

[0018] The connecting column is fixedly arranged on the side of the connecting plate facing the circuit board, and is located in the middle of the connecting plate; the connecting column is made of elastic material; the connecting column includes a column body and a plug, and the plug is a conical body.

[0019] Preferably, the first induction element further comprises:

[0020] The contact portion is arranged on a side of the connecting plate facing the circuit board, and one contact portion is arranged corresponding to each of the sensing contacts.

[0021] Preferably, a connection structure is provided on the circuit board, and the connection structure comprises:

[0022] A connecting hole, used to connect with the first induction element; the connecting hole is a through hole opened in the middle of the circuit board body; the connecting hole corresponds to the connecting column, and the inner diameter of the connecting hole is larger than the outer diameter of the column body of the connecting column;

[0023] The first mounting holes are used to connect to the external structure, and the first mounting holes are distributed at the edge of the circuit board.

[0024] Preferably, the first induction member is entirely made of conductive rubber.

[0025] Preferably, the components of the circuit board are arranged in the end area of ​​the fan-shaped circuit board;

[0026] A terminal is provided at one end of the circuit board, and the terminal penetrates the body of the circuit board and extends to both sides of the circuit board;

[0027] A through slot is provided on the connection plate of the first induction element corresponding to the terminal post;

[0028] The connecting plate is provided with a second mounting hole corresponding to the first mounting hole;

[0029] The sensing contact is a block structure.

[0030] A drum washing machine door, comprising:

[0031] The door panel member is used as a plate structure facing the user when the drum washing machine is in use; the door panel member is provided with a loading port for loading clothes;

[0032] The door body is arranged corresponding to the delivery opening of the door panel member and is movably connected to the door panel member, and the door body can close the delivery opening of the door panel member;

[0033] The lower part of the door body and the door panel is provided with the aforementioned washing machine door foreign body sensor structure;

[0034] The door body is provided with a mounting portion; the mounting portion is a groove opened in the door body away from the door panel member, and the groove is arranged corresponding to the first sensing portion.

[0035] Preferably, a plurality of through holes are provided in the groove of the mounting portion, and the number of the through holes corresponds to the number of the sensing contacts.

[0036] Preferably, the mounting portion is further provided with mounting posts corresponding to the first mounting hole and the second mounting hole.

[0037] A drum washing machine uses the above-mentioned washing machine door.

[0038] Compared with the prior art, the present invention has the following beneficial effects: through the sensing structure of the present invention, it is possible to detect whether the washing machine door is clamped by clothes within the set sensing area. The sensing structure can provide a simple direct contact sensing signal acquisition output for the drum washing machine as a safety detection structure before the washing machine is operated. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The overall structure of the embodiment of the present application is shown in FIG. Figure 1 ;

[0040] Figure 2 The overall structure of the embodiment of the present application is shown in FIG. Figure 2 ;

[0041] Figure 3 The explosion state of the embodiment of the present application is shown in FIG. Figure 1 ;

[0042] Figure 4 for Figure 3 A partial enlarged view of;

[0043] Figure 5The explosion state of the embodiment of the present application is shown in FIG. Figure 2 ;

[0044] Figure 6 for Figure 5 B is a partial enlarged view;

[0045] Figure 7 This is a schematic diagram of the structure of a washing machine door according to an embodiment of the present application;

[0046] Figure 8 This is a schematic diagram of the door structure of an embodiment of the present application;

[0047] Fig. 9 for Figure 8 A partial enlarged view of C.

[0048] In the figure:

[0049] 1. First sensing part; 11. Circuit board; 111. Connecting hole; 112. First mounting hole; 113. Terminal post; 12. First sensing element; 121. Sensing contact; 122. Connecting plate; 123. Connecting post; 124. Contact part; 125. Through slot; 126. Second mounting hole; 2. Second sensing part;

[0050] 100. Door panel parts

[0051] 200. Door body; 210. Installation part. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] See also Figure 1-Figure 6 , this application provides the following technical solutions:

[0054] A foreign body sensing structure of a washing machine door includes a first sensing part 1 arranged on the door of the washing machine, and a second sensing part 2 arranged on the side of the clothes loading port of the washing machine. The sensing side of the first sensing part 1 is arranged toward the drum direction of the washing machine; the sensing side of the second sensing part 2 is arranged toward the direction away from the washing machine body, and the second sensing part 2 corresponds to the first sensing part 1.

[0055] The sensing sides of the first sensing part 1 and the second sensing part 2 are both fan-shaped ring structures corresponding to the clothes loading port of the washing machine; when the door of the washing machine is closed normally, the sensing side of the first sensing part 1 is in contact with the sensing side of the second sensing part 2; when the first sensing part 1 and the second sensing part 2 are in contact, a circuit connection signal can be fed back.

[0056] The degree α of the central angle between the first sensing part 1 and the second sensing part 2 satisfies 180°≤α≤45°.

[0057] According to actual needs, different degrees of central angles can be used, or different numbers of the present sensor structures can be set at the same washing machine door. By being electrically connected to the control module of the washing machine, feedback on the closing state of the washing machine door is formed with the help of this sensor. Although most existing washing machines have sensors for the closed door state, they only observe the snap-on state of the closed door. In particular, when thinner clothes are clamped, it will not affect the closing of the washing machine door, so the washing machine will not have feedback on abnormal door closure. The sensor structure of this solution corresponds to the detection sensor between the washing machine door and the washing machine door panel. If there is a foreign object between the first sensor part 1 and the second sensor part 2, it affects the circuit conduction between the two, so that the state of the machine door clamping the foreign object can be fed back to the control module of the washing machine.

[0058] Based on the above implementation scheme, the degree of the central angle α of the first sensing part 1 and the second sensing part 2 is 120°. For a drum washing machine, since the possibility of clothes being caught on the upper part of the door in a normal placement state and not being seen by people is almost zero, the sensing structure does not need to be set as a ring. Basically, the position where the door may catch foreign objects is the range of 120° directly below the washing machine door. Therefore, the selection of a sensing angle range of 120° is sufficient for use.

[0059] On the basis of the above implementation scheme, the first sensing part 1 includes a circuit board 11 and a first sensing element 12. The circuit board 11 is in the shape of a 120° fan-shaped ring, and a sensing circuit and corresponding components are arranged on the board; the first sensing element 12 is arranged in the direction of the circuit board 11 toward the drum of the washing machine, and is in the shape of a fan-shaped ring, and a plurality of sensing contacts 121 are evenly arranged along the arc of the fan. The sensing contacts 121 are conductive and elastic; the part of the second sensing part 2 that contacts the sensing contacts 121 of the first sensing element 12 is made of conductive material.

[0060] The specific form of the sensing contacts 121 can be realized by using existing technology, and the circuit is considered to be connected only when all the sensing contacts 121 are in contact with the second sensing part 2 .

[0061] Its implementation forms include the above-mentioned, the second sensing part 2 and the first sensing element 12 are both made of conductive materials, and when the two are in contact, the circuit is connected. It is also possible to use the second sensing part 2 to push the first sensing element 12, and then press the sensing contact 121 to connect the circuit, etc. And the scheme of setting multiple sensing contacts 121, as a further scheme, can also assign a corresponding code to each sensing contact 121, and feedback the connection status of each sensing contact 121 position to the control module of the washing machine, and determine which position of the washing machine has foreign matter according to the feedback result.

[0062] Based on the above implementation scheme, see Figures 3 to 6 The first sensing element 12 further includes a connecting plate 122, which is a fan-shaped annular structure corresponding to the circuit board 11, and the sensing contact 121 is arranged on one side of the connecting plate 122. A connecting column 123 is fixedly arranged on the side of the connecting plate 122 facing the circuit board 11, and the connecting column 123 is located in the middle of the connecting plate 122; the connecting column 123 is made of elastic material; the connecting column 123 includes a column and a plug, and the plug is a conical body.

[0063] A connection structure is provided on the circuit board 11, and the connection structure includes a connection hole 111 and a first mounting hole 112. The connection hole 111 is used to connect with the first induction member 12; the connection hole 111 is a through hole opened in the middle of the board body of the circuit board 11; the connection hole 111 corresponds to the connection column 123, and the inner diameter of the connection hole 111 is larger than the outer diameter of the column part of the connection column 123; the first mounting hole 112 is used to connect with the external structure, and the first mounting holes 112 are distributed at the two edge positions of the circuit board 11.

[0064] When in use, it is only necessary to insert the connection column 123 of the first induction member 12 into the connection hole 111 of the circuit board 11. By using the connection column 123 made of elastic material as the connection structure between the circuit board 11 and the first induction member 12, on the one hand, there will be no problem of damaging the circuit board 11 during connection, and on the other hand, the connection hole 111 and the connection column 123 are both arranged in the middle position of their corresponding structures, which can sufficiently ensure the effective connection between the two.

[0065] Based on the above implementation scheme, see Figure 4 and Figure 6 The first sensing element 12 further includes a contact portion 124 . The contact portion 124 is disposed on a side of the connecting plate 122 facing the circuit board 11 . One contact portion 124 is disposed corresponding to each sensing contact 121 .

[0066] The contact portion 124 can adopt different structural schemes according to the specific form of the sensor contact 121. If the sensor contact 121 adopts the form of a push switch, and the active end of the switch is attached to the excitation area on the circuit board 11 to connect the circuit, the connecting plate 122 can be penetrated to allow the trigger end of the sensor contact 121 to pass through the connecting plate 122 to form the contact portion 124.

[0067] This solution provides a method in which the first sensing element 12 is made of conductive rubber as a whole, and the connecting plate 122, the sensing contact 121, the connecting column 123 and the contact portion 124 are integrally formed and made of conductive rubber or other conductive elastic bodies. In this method, in order to ensure a good sensing effect triggered by the contact portion sensing contact 121, the contact portion 124 is a raised dot structure.

[0068] On the basis of the above implementation scheme, also refer to Figure 4 and Figure 6 The components of the circuit board 11 are arranged in the upper end area of ​​the fan-shaped circuit board 11, that is, one of the two ends of the arc; a terminal 113 is provided at one end of the circuit board 11, and the terminal 113 passes through the board body of the circuit board 11 and extends to both sides of the circuit board 11; a through groove 125 is provided on the connecting plate 122 of the first sensing element 12 corresponding to the terminal 113; a second mounting hole 126 is provided on the connecting plate 122 corresponding to the first mounting hole 112; the sensing contact 121 is a block structure.

[0069] Considering that the sensor structure needs to be connected to the control circuit of the washing machine, the terminal 113 and the components are arranged in the area of ​​the present solution, which may be less affected by water during use. The arrangement of the terminal 113 and the through slot 125 is to adapt to different washing machine structures, and a connection position can be provided on either side of the machine door.

[0070] Based on the above implementation scheme, see Figure 7 and Fig. 9 The present invention provides a drum washing machine door, which includes a door panel 100 and a door body 200. The door panel 100 is used as a plate structure facing the user when the drum washing machine is in use; the door panel 100 is provided with a loading port for loading clothes; the door body 200 is arranged corresponding to the loading port of the door panel 100, and is movably connected to the door panel 100, and the door body 200 can close the loading port of the door panel 100.

[0071] The lower part of the door body 200 and the door panel member 100 is provided with an installation portion 210 for installing the aforementioned washing machine door foreign object sensor structure; the installation portion 210 is a groove opened in the door body 200 away from the door panel member 100, and is opened in the lower middle position of the door body 200, and the groove is a fan-shaped ring corresponding to the first sensor part 1, or an arc-shaped strip structure.

[0072] See also Fig. 9 , a plurality of through holes are provided in the groove of the mounting part 210, and the number of through holes corresponds to the number of sensor contacts 121. When in use, the sensor contacts 121 are passed through the through holes, and the second sensor part 2 is arranged at the corresponding position of the door panel member 100. The mounting part 210 is provided with mounting posts corresponding to the first mounting holes 112 and the second mounting holes 126. The mounting posts are passed through the first mounting holes 112 and the second mounting holes 126, and then the first sensor 12 and the circuit board 11 are fixed with the help of the mounting posts to complete the installation.

[0073] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A foreign body sensor structure for a washing machine door, characterized in that: include: A first sensor (1) is arranged on the door of the washing machine, with its sensing side facing the drum of the washing machine; A second sensor (2) is arranged on the side of the clothes inlet of the washing machine, with the sensing side thereof facing away from the washing machine body, and the second sensor (2) is arranged corresponding to the first sensor (1); The sensing sides of the first sensing part (1) and the second sensing part (2) are both fan-shaped annular structures corresponding to the laundry loading port of the washing machine; when the door of the washing machine is normally closed, the sensing side of the first sensing part (1) and the sensing side of the second sensing part (2) are in contact with each other; when the first sensing part (1) and the second sensing part (2) are in contact with each other, a circuit connection signal can be fed back; The degree α of the central angle of the first sensing part (1) and the second sensing part (2) satisfies 180°≤α≤45°.

2. The foreign body sensor structure of the washing machine door as claimed in claim 1, characterized in that: The degree of the central angle α between the first sensing part (1) and the second sensing part (2) is 120°.

3. The foreign body sensor structure of the washing machine door as claimed in claim 2, characterized in that: The first sensing unit (1) comprises: The circuit board (11) is in the shape of a fan-shaped ring as a whole, and a sensor circuit and corresponding components are arranged on the board; The first sensing element (12) is arranged in the direction of the circuit board (11) toward the drum of the washing machine and is in the shape of a sector ring as a whole, with a plurality of sensing contacts (121) evenly distributed along the arc of the sector.

4. The foreign body sensor structure of the washing machine door as claimed in claim 3, characterized in that: The sensing contact (121) is conductive and elastic; The portion where the second sensing portion (2) contacts the sensing contact point (121) of the first sensing element (12) is made of a conductive material.

5. The foreign body sensor structure of the washing machine door as claimed in claim 4, characterized in that: The first induction element (12) further comprises: The connecting plate (122) is a fan-shaped annular structure corresponding to the circuit board (11), and the sensing contact (121) is arranged on one side of the connecting plate (122); The connecting column (123) is fixedly arranged on a side of the connecting plate (122) facing the circuit board (11), and the connecting column (123) is located in the middle of the connecting plate (122); the connecting column (123) is made of elastic material; the connecting column (123) comprises a column body and a plug, and the plug is a conical body.

6. The foreign body sensor structure of the washing machine door as claimed in claim 5, characterized in that: The first induction element (12) further comprises: A contact portion (124) is arranged on a side of the connecting plate (122) facing the circuit board (11), and one contact portion (124) is arranged corresponding to each sensing contact point (121).

7. The foreign body sensor structure of the washing machine door as claimed in claim 5, characterized in that: The circuit board (11) is provided with a connection structure, which comprises: A connecting hole (111) is used to connect to the first inductive element (12); the connecting hole (111) is a through hole opened in the middle of the circuit board (11); the connecting hole (111) corresponds to the connecting column (123), and the inner diameter of the connecting hole (111) is greater than the outer diameter of the column part of the connecting column (123); The first mounting holes (112) are used for connection with an external structure, and the first mounting holes (112) are distributed at the edge of the circuit board (11).

8. The foreign body sensor structure of the washing machine door as claimed in claim 7, characterized in that: The first induction element (12) is entirely made of conductive rubber.

9. The foreign body sensor structure of the washing machine door as claimed in claim 7, characterized in that: The components of the circuit board (11) are arranged in the fan-shaped end region thereof; A terminal post (113) is provided at one end of the circuit board (11), and the terminal post (113) penetrates the body of the circuit board (11) and extends to both sides of the circuit board (11); A through slot (125) is provided on the connecting plate (122) of the first induction member (12) corresponding to the terminal post (113); The connecting plate (122) is provided with a second mounting hole (126) corresponding to the first mounting hole (112); The sensing contact (121) is a block structure.

10. A drum washing machine door, characterized in that: include: The door panel member (100) is used as a plate structure facing the user when the drum washing machine is in use; the door panel member (100) is provided with a loading port for loading clothes; The door body (200) is arranged corresponding to the delivery opening of the door panel member (100) and is movably connected to the door panel member (100). The door body (200) can close the delivery opening of the door panel member (100); The door body (200) and the lower part of the door panel (100) are provided with a washing machine door foreign body sensor structure as claimed in any one of claims 1 to 9; The door body (200) is provided with a mounting portion (210); the mounting portion (210) is a groove provided in the door body (200) away from the door panel member (100), and the groove is provided corresponding to the first sensing portion (1).

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