Door opening mechanism of dish washing machine and dish washing machine

Abstract

The utility model discloses a dish-washing machine door opening mechanism and dish-washing machine, the dish-washing machine door opening mechanism comprises: an ejection piece installed on one of a machine body and a door body of the dish-washing machine and suitable for moving along a first direction to apply thrust to the other one of the machine body and the door body; the rotatable driving wheel is in transmission fit with the matching part of the ejection piece, the driving wheel rotates in the first rotating direction when the ejection piece moves in the first direction, and the driving wheel rotates in the second rotating direction when the ejection piece moves in the second direction; the first limiting piece is matched with the driving wheel; in the state that the ejection piece moves to a first set position in the first direction, the first limiting piece applies driving force for driving the driving wheel to rotate in the first rotating direction so as to prevent the ejection piece from moving in the second direction, and the second limiting piece limits the ejection piece or the driving wheel so as to prevent the ejection piece from moving in the first direction. According to the door opening mechanism of the dish washing machine, the drying effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dish-washing machine technical field, more specifically, relate to a door opening mechanism of dish-washing machine and dish-washing machine. BACKGROUND

[0002] After dish-washing machine automatic washing tableware, if dish-washing machine inside is closed environment, if long-term not taking out dish-washing machine inside tableware, the water remaining on the surface of tableware can cause tableware mildew, bacteria breeding and other problems occur.Dish-washing machine automatic door opening technology is used in dish-washing machine drying field, when dish-washing machine automatic washing tableware, door will open a certain angle, make dish-washing machine inside and outside air circulation, to discharge dish-washing machine inside water vapor, reach the purpose of drying tableware.

[0003] In the related art, the opening angle of the door body is difficult to control, and the opening angle is too large to easily contaminate the clean tableware, and the opening angle is too small to easily cause poor drying effect. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a door opening mechanism of dish-washing machine, which can open the door body, so that the opening angle of the door body is not too large to protect the clean tableware, and is not too small to have good drying effect.

[0005] Another purpose of the utility model is to provide a dish-washing machine with the above door opening mechanism.

[0006] The dishwasher door opening mechanism according to an embodiment of the present invention includes: an ejector, the ejector having a mating portion, the ejector being mounted on one of the dishwasher's body and door, the ejector being adapted to move along a first direction to apply a pushing force to the other of the body and door to drive the door to open; and a drive wheel, the drive wheel being rotatably mounted on one of the body and door, wherein during the movement of the ejector along the first direction, the mating portion engages with the drive wheel to cause the drive wheel to rotate along a first rotation direction, and during the movement of the ejector along a second direction, the mating portion engages with the drive wheel to cause the drive wheel to rotate along a second rotation direction. The first direction and the second direction are opposite, and the first rotation direction and the second rotation direction are opposite; a first limiting member is installed in one of the body and the door, and the first limiting member cooperates with the drive wheel; a second limiting member is installed in one of the body and the door; wherein, when the ejector moves to a first set position along the first direction, the first limiting member applies a driving force to drive the drive wheel to rotate along the first rotation direction to prevent the ejector from moving along the second direction, and the second limiting member limits the ejector or the drive wheel to prevent the ejector from continuing to move along the first direction.

[0007] According to the present invention, the door opening mechanism of the dishwasher can drive the door to open through the ejector. When the ejector moves to the first set position along the first direction, the ejector can be kept in the state by the transmission cooperation of the mating part and the drive wheel, and the limiting function of the first limiting member and the second limiting member. The opening angle of the door can be positioned at the predetermined opening angle, resulting in a more stable drying effect and lower energy consumption of the dishwasher.

[0008] In addition, the door opening mechanism of the dishwasher according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the first limiting member is a torsion spring, one end of which is hinged to one of the machine body and the door body, and the other end is eccentrically hinged to the drive wheel. When the ejector moves to the first set position along the first direction, the other end of the torsion spring is located on one side of the rotation center of the drive wheel along the second direction.

[0010] According to some embodiments of the present application, the door opening mechanism comprises a second elastic member, the second elastic member is installed on one of the machine body and the door body, and the second elastic member is connected with the ejector, in the state that the ejector moves to the first set position along the first direction, the second elastic member applies elastic force to the ejector along the second direction, and the driving force applied to the ejector by the driving wheel through the first limiting member is greater than the elastic force applied to the ejector by the second elastic member.

[0011] According to some embodiments of the present application, in the state that the ejector moves between the initial position and the second set position, the first limiting member applies driving force to the driving wheel to drive the driving wheel to rotate along the second rotation direction; and / or, in the state that the ejector moves between the first set position and the second set position, the driving force applied to the ejector by the driving wheel through the first limiting member is less than the elastic force applied to the ejector by the second elastic member, the initial position and the second set position are located on one side of the first set position along the second direction, and the distance between the initial position and the first set position is greater than the distance between the initial position and the second set position in the first direction.

[0012] According to some embodiments of the present application, in the state that the ejector moves to the second set position, the driving wheel is matched with the matching part, the matching part of the driving wheel and the rotation center of the driving wheel are arranged perpendicularly to the first direction, and the second limiting member releases the limiting of the ejector or the driving wheel.

[0013] According to some embodiments of the present application, in the state that the ejector moves to the first set position along the first direction, the ejector is suitable for moving from the first set position to the second set position along the second direction under the action of external force, and continues to move along the second direction under the action of the first limiting member and the second elastic member, so as to reset the ejector.

[0014] According to some embodiments of the present application, the second elastic member is located on the side of the ejector which is perpendicular to the first direction and away from the driving wheel.

[0015] According to some embodiments of the present application, the ejector has a stroke limiting part, the second limiting member is a first stop protrusion provided on one of the machine body and the door body, the first stop protrusion is located on one side of the stroke limiting part along the first direction, in the state that the ejector moves to the first set position along the first direction, the first stop protrusion abuts against the stroke limiting part to limit the ejector.

[0016] According to some embodiments of the present application, the driving wheel is provided with a guide part arranged eccentrically, one of the machine body and the door body is provided with a guide groove extending along the circumference of the driving wheel, and the guide part is movably inserted into the guide groove.

[0017] According to some embodiments of the present application, one end of the guide groove is formed with a groove wall as the second limiting part, and in the state that the ejecting part moves to the first set position along the first direction, the guide part abuts against the groove wall at one end of the guide groove to limit the driving wheel.

[0018] According to some embodiments of the present application, the door opening mechanism comprises a driving part, the driving part is installed on one of the machine body and the door body of the dishwasher, and the driving part is used to apply a driving force to the ejecting part to move the ejecting part along the first direction.

[0019] According to some embodiments of the present application, the door opening mechanism comprises a connecting rod, the connecting rod is rotatably installed on one of the machine body and the door body, the connecting rod comprises a first arm part and a second arm part, the driving part cooperates with the first arm part and is used to drive the connecting rod to rotate along a set direction, the ejecting part cooperates with the second arm part, and the connecting rod rotates along the set direction to drive the second arm part to move the ejecting part along the first direction.

[0020] According to some embodiments of the present application, the door opening mechanism comprises a housing, the housing is installed on one of the machine body and the door body, the ejecting part, the driving wheel, the first limiting part and the second limiting part are all arranged in the housing, and the ejecting part is adapted to extend out of the housing to apply a pushing force to the other one of the machine body and the door body.

[0021] According to some embodiments of the present application, one of the machine body and the door body is provided with a sliding groove extending along the first direction, the ejecting part comprises a sliding block and a first ejecting rod connected with each other, the sliding block is provided with a sliding convex part matched with the sliding groove, the sliding convex part is slidably installed in the sliding groove, and the first ejecting rod extends along the first direction.

[0022] According to some embodiments of the present application, the ejecting part is installed on the machine body, the first direction is a direction from back to front, the second direction is a direction from front to back, and the door body is located at the front side of the machine body.

[0023] The dishwasher according to the embodiments of the present application comprises the door opening mechanism of the dishwasher according to the embodiments of the present application.

[0024] Additional aspects and advantages of the present application will be given in part in the following description and in part will become apparent to those skilled in the art upon examination of the following description or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0026] Figure 1 is a structure diagram of a dishwasher according to an embodiment of the present application;

[0027] Figure 2 is an exploded view of a door opening mechanism according to an embodiment of the present application;

[0028] Figure 3 is a structure diagram of a door opening mechanism according to an embodiment of the present application, wherein the ejector is located at an initial position;

[0029] Figure 4 is a top view of Figure 3

[0030] Figure 5 is a partial structure diagram of Figure 3

[0031] Figure 6 is a top view of a door opening mechanism according to an embodiment of the present application, wherein the ejector is located at a first set position;

[0032] Figure 7 is a structure diagram of a door opening mechanism according to an embodiment of the present application, wherein the ejector is located between the initial position and a second set position;

[0033] Figure 8 is a top view of Figure 7

[0034] LIST OF REFERENCE NUMERALS

[0035] dishwasher 1000; machine body 200; washing cavity 210;

[0036] door opening mechanism 100;

[0037] ejector 10; sliding block 101; first ejector rod 102; matching part 11; stroke limiting part 12; protrusion 13; sliding convex part 14;

[0038] drive wheel 20; guide part 21;

[0039] first limiting part 30; torsion spring 31;

[0040] second limiting part 40; first stop convex part 41;​​​

[0041] second elastic member 50;

[0042] drive member 60; second top rod 61;

[0043] link 70; first arm portion 71; second arm portion 72; waist-shaped hole 721;

[0044] housing 80; upper housing 801; lower housing 802; guide groove 81; sliding groove 82; fastener 90. DETAILED DESCRIPTION

[0045] Embodiments of the present application will be described in detail below with reference to the drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application only, and should not be understood as limiting the present application.

[0046] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0047] In the description of the present application, "first feature" and "second feature" can include one or more features, and "multiple" means two or more. The "above" or "below" of the first feature with respect to the second feature can include direct contact between the first and second features, or can include indirect contact between the first and second features through another feature therebetween. The "above", "upper" and "upper surface" of the first feature with respect to the second feature include the first feature directly above and obliquely above the second feature, or simply indicate that the first feature is higher in horizontal height than the second feature.

[0048] A dishwasher 1000 and a door opening mechanism 100 of the dishwasher 1000 according to embodiments of the present application will be described below with reference to the drawings.

[0049] Referring to Figure 1 As shown, the dishwasher 1000 according to embodiments of the present application can include the door opening mechanism 100 according to embodiments of the present application. For example, in some embodiments, as Figure 1As shown, the dishwasher 1000 comprises a body 200, a door body for closing or opening a washing cavity 210 in the body 200, and an opening door mechanism 100 provided on the body 200 and used to drive the door body to open the washing cavity 210, so as to make the air in and out of the dishwasher 1000 flow to dry the tableware after washing, and facilitate the user to take and place the tableware.

[0050] Referring to Figures 1-8 As shown, the opening door mechanism 100 according to the embodiments of the present application can comprise an ejector 10, a driving wheel 20, a first limiting piece 30 and a second limiting piece 40. Specifically, the ejector 10 is provided with a matching part 11, the ejector 10 is mounted on one of the body 200 and the door body of the dishwasher 1000, and the ejector 10 can move along a first direction (for example Figures 1-5 the rear-to-front direction as shown) to apply a pushing force to the other one of the body 200 and the door body, so as to drive the door body to open.

[0051] The first direction can be the arrangement direction of the door body and the body 200, or can be at a certain angle with the arrangement direction, etc., so that the movement of the ejector 10 along the first direction can open the door body. For example, in some embodiments, as shown Figure 1 The door body is provided on the front side of the body 200, the ejector 10 is mounted on the body 200, the first direction is the rear-to-front direction, so that the ejector 10 can move from the rear to the front to push the door body and drive the door body to open.

[0052] The ejector 10 can comprise one or more components. For example, in some embodiments, as shown Figures 2-4 The ejector 10 comprises a slider 101 and a first ejector rod 102 connected thereto, the first ejector rod 102 extends along the front-to-back direction, and the slider 101 and the first ejector rod 102 can be connected by a fastener 90 such as a bolt or a screw. The movement of one of the slider 101 and the first ejector rod 102 along the first direction can drive the other one to also move along the first direction, which facilitates the replacement of the first ejector rod 102 of different lengths to change the position of the ejector 10 along the front-to-back direction in the first set position state, and further change the opening angle of the dishwasher 1000, without the need to replace the entire ejector 10, which is convenient to operate and is suitable for different sizes of the dishwasher 1000, and has wide applicability.

[0053] The driving wheel 20 is rotatably mounted on one of the body 200 and the door body. During the movement of the ejector 10 along the first direction, the matching part 11 and the driving wheel 20 are in transmission cooperation, so that the driving wheel 20 rotates along a first rotation direction (for example Figure 4 the clockwise direction as shown), and during the movement of the ejector 10 along a second direction (for example Figures 1-5 the front-to-rear direction as shown), the matching part 11 and the driving wheel 20 are in transmission cooperation, so that the driving wheel 20 rotates along a second rotation direction (for exampleFigure 4 The first direction and the second direction are opposite, and the first rotation direction and the second rotation direction are opposite.

[0054] The transmission cooperation between the driving wheel 20 and the cooperation part 11 can be realized by gear engagement, friction cooperation or other transmission modes, and the transmission mode is various. For example, in some embodiments, as shown in the drawings, the driving wheel 20 is a gear such as a ratchet wheel, and the cooperation part 11 is a rack part including a plurality of tooth parts, and the gear and the rack part can be engaged with each other. During the movement of the ejector 10 from back to front, the rack part moves from back to front, and the engagement between the gear and the rack part makes the gear rotate in the clockwise direction; during the movement of the ejector 10 from front to back, the rack part moves from front to back, and the engagement between the gear and the rack part makes the gear rotate in the counterclockwise direction. Figures 2-4

[0055] The first limiting part 30 is installed on one of the machine body 200 and the door body, and the first limiting part 30 cooperates with the driving wheel 20, so that the first limiting part 30 can limit the driving wheel 20 with the rotation of the driving wheel 20. The second limiting part 40 is installed on one of the machine body 200 and the door body, and the second limiting part 40 cooperates with the ejector 10 or the driving wheel 20, so that the second limiting part 40 can limit the ejector 10 with the movement of the ejector 10, or the second limiting part 40 can limit the driving wheel 20 with the rotation of the driving wheel 20.

[0056] Specifically, in the state that the ejector 10 moves in the first direction to the first set position, the first limiting part 30 applies a driving force to drive the driving wheel 20 to rotate in the first rotation direction, so as to prevent the ejector 10 from moving in the second direction, and the second limiting part 40 limits the ejector 10 or the driving wheel 20, so as to prevent the ejector 10 from continuing to move in the first direction.

[0057] The movement of the ejector 10 in the first direction to the first set position makes the other one of the machine body 200 and the door body move away from one of the machine body 200 and the door body at the ejector 10 in the first direction, and the opening angle of the door body is a predetermined opening angle. The position of any part of the ejector 10 in the first direction can be recorded as the position of the ejector 10, the position of the ejector 10 in the closed state of the door body is recorded as the initial position, the initial position is the limit position of the ejector 10 in the second direction, and the position of the ejector 10 in the state that the door body is opened by the predetermined opening angle is recorded as the first set position, and the first set position is the limit position of the ejector 10 in the first direction.

[0058] For example, in some specific embodiments, the position of the rear end point of the ejector 10 in the front-rear direction is recorded as the position of the ejector 10, as shown in the drawings, the ejector 10 is in the initial position, as shown in the drawings, the ejector 10 is in the first set position, and as shown in the drawings, the ejector 10 is in the second set position. Figure 4 Figure 6 ​​The ejector is located at the first set position.

[0059] The door body is opened to a predetermined door opening angle, so that the air inside and outside the dishwasher 1000 flows to dry the tableware in the dishwasher 1000. In the embodiment of the present application, the predetermined door opening angle can be flexibly set according to the actual situation such as the weight of the door body and drying requirements.

[0060] By changing the first set position, the opening angle of the dishwasher 1000 can be changed. The first set position can be determined according to actual requirements. For example, for a larger dishwasher 1000, the first set position can be changed so that the ejector 10 at the first set position moves farther in the first direction, and the opening angle of the door body is larger, so as to dry the tableware. In the embodiment of the present application, the size or position of the cooperating part 11, the driving wheel 20, the first limiting part 30 and the second limiting part 40 can be changed to change the first set position. In the embodiment in which the driving wheel 20 is a gear and the cooperating part 11 is a rack part, the meshing angle, the meshing line, the number of teeth (such as greater than or equal to 3) of the gear and the rack part can also be designed to change the first set position.

[0061] During the rotation of the driving wheel 20 in the first rotation direction, the driving wheel 20 and the cooperating part 11 are in transmission cooperation to apply a driving force to the cooperating part 11, so that the ejector 10 provided with the cooperating part 11 can move in the first direction. Therefore, in the state that the ejector 10 moves in the first direction to the first set position, the first limiting part 30 applies a driving force to the driving wheel 20 to drive the driving wheel 20 to rotate in the first rotation direction, and the transmission cooperation between the driving wheel 20 and the cooperating part 11 will apply a driving force to the ejector 10 to move in the first direction, so as to prevent the ejector 10 from moving in the second direction.

[0062] In combination with the limiting of the second limiting part 40 to the ejector 10 or the driving wheel 20, the ejector 10 moving in the first direction to the first set position cannot move in the first direction or in the second direction, so as to limit the ejector 10 in the state of moving in the first direction to the first set position, and further fix the opening angle of the door body realized by the door opening mechanism 100, so that the drying effect of the dishwasher 1000 is more stable every time the dishwasher is washed.

[0063] In some embodiments, such as Figure 6As shown, the second limiting member 40 can be arranged at one side of the ejector 10 along the first direction, and in the state that the ejector 10 moves to the first set position along the first direction, the second limiting member 40 abuts against the ejector 10 to prevent the ejector 10 from continuously moving along the first direction. In other embodiments, the second limiting member 40 can also be arranged at one side of the driving wheel 20 along the first rotation direction, and in the state that the ejector 10 moves to the first set position along the first direction, the second limiting member 40 abuts against the driving wheel 20 to prevent the driving wheel 20 from rotating along the first rotation direction, thereby preventing the ejector 10 provided with the matching part 11 from moving along the first direction. The arrangement position and structure of the second limiting member 40 are various.

[0064] In some related technologies, the dishwasher drives a spring-loaded piston to move towards the door body to push the door body and open the door body by electrifying the wax motor to melt and expand the solid wax in the wax motor. However, the movement of the piston is realized by the melting and expansion of the solid wax, so that the displacement of the piston is difficult to accurately control, which causes the opening angle of the door body to be difficult to be positioned at the predetermined opening angle, resulting in unstable drying data. For example, the opening angle of the door body is greater than the predetermined opening angle, and the opening angle is too large, which causes dust, cockroaches, flies and the like in the outside environment to enter the inside of the dishwasher during the drying process, polluting the clean tableware, and the cleaning effect is poor. For example, the opening angle of the door body is less than the predetermined opening angle, and the opening angle is too small, which causes the drying time of the tableware to be too long, and the moisture on the surface of the tableware is not dried, which causes the tableware to mildew and bacteria to breed, and the drying effect is poor.

[0065] Moreover, after the wax motor is powered off, the solid wax cools down, and the piston moves away from the door body under the action of the spring, so that the door body is separated from the piston, which causes the opening state of the door body to be unstable, for example, the door body is easily closed in the case of children mistakenly pushing the door body, and the drying function is invalid. If the piston of the wax motor always abuts against the door body during the opening process, the wax motor needs to be continuously powered, and the dishwasher has high energy consumption.

[0066] In the present application, the ejector 10 can move along the first direction to open the door body, and in the state that the ejector 10 moves to the first set position along the first direction, the transmission cooperation of the matching part 11 and the driving wheel 20 and the limiting function of the first limiting member 30 and the second limiting member 40 prevent the ejector 10 from continuously moving along the first direction or along the second direction, so that the ejector 10 can be kept in the state of moving to the first set position along the first direction. The opening angle of the door body in this state is set as the predetermined opening angle, so that the opening angle of the door body can be positioned at the predetermined opening angle, and the drying effect is relatively stable.

[0067] For example, in the state that the ejector 10 moves to the first set position along the first direction, the ejector 10 is prevented from moving along the first direction, so that the opening angle of the door body is not greater than the predetermined opening angle, the possibility of dust, cockroaches, flies and the like entering the inside of the dishwasher 1000 is reduced, and the clean dishes are protected.

[0068] Moreover, the door body is kept at the predetermined opening angle by the mechanical limiting function of the first limiting member 30 and the second limiting member 40, the opening state of the door body is stable, the drying function is not easily disabled, and the opening mechanism 100 does not need to be continuously powered, which is beneficial to reduce the energy consumption of the dishwasher 1000.

[0069] According to the opening mechanism 100 of the dishwasher 1000, the door body can be opened by the ejector 10, and in the state that the ejector 10 moves to the first set position along the first direction, the ejector 10 is kept in the state by the transmission cooperation of the cooperation part 11 and the driving wheel 20 and the limiting function of the first limiting member 30 and the second limiting member 40, and the opening angle of the door body can be positioned at the predetermined opening angle, the drying effect is relatively stable, and the energy consumption of the dishwasher 1000 is relatively low.

[0070] Since the opening mechanism 100 has the above beneficial technical effects, according to the dishwasher 1000, the door body can be opened by the ejector 10, and in the state that the ejector 10 moves to the first set position along the first direction, the ejector 10 is kept in the state by the transmission cooperation of the cooperation part 11 and the driving wheel 20 and the limiting function of the first limiting member 30 and the second limiting member 40, and the opening angle of the door body can be positioned at the predetermined opening angle, the drying effect is relatively stable, and the energy consumption of the dishwasher 1000 is relatively low.

[0071] In some embodiments of the present application, as shown in Figures 1-2 The ejector 10 is installed on the machine body 200, the first direction is a direction from back to front, the second direction is a direction from front to back, the door body is located on the front side of the machine body 200, the ejector 10 can move from back to front to push the door body, and the ejector 10 can also move from front to back to leave the door body, so as to close the door body.

[0072] For the convenience of understanding, the following is described by taking one of the machine body 200 and the door body as the machine body 200 and the other as the door body as an example, that is, the ejector 10 is installed on the machine body 200, and the ejector 10 can exert a pushing force on the door body in the first direction to drive the door body to open. Similarly, the embodiment of "one of the machine body 200 and the door body as the door body, and the other as the machine body 200" can also be obtained.

[0073] In some embodiments of the utility model, as shown in Figures 1-8 The door opening mechanism 100 includes a shell 80, the shell 80 is installed on the machine body 200, the ejector 10, the drive wheel 20, the first limiting piece 30 and the second limiting piece 40 are all arranged in the shell 80, and the ejector 10 can extend out of the shell 80 to exert a pushing force on the door body. By installing the ejector 10, the drive wheel 20, the first limiting piece 30 and the second limiting piece 40 together after integrating them through the shell 80 on the machine body 200, the compactness of the door opening mechanism 100 can be improved, and the installation space occupied by the door opening mechanism 100 can be reduced.

[0074] In some embodiments, as shown in Figures 2-5 The shell 80 is provided with a sliding groove 82 extending in the first direction, and the ejector 10 is provided with a sliding convex part 14 matched with the sliding groove 82, so that the ejector 10 is movably installed on the shell 80. The cooperation of the sliding groove 82 and the sliding convex part 14 can guide the movement of the ejector 10, so that the movement of the ejector 10 is more stable, and the opening of the door body is smoother.

[0075] In some embodiments, as shown in Figures 2-5 The shell 80 includes an upper shell 801 and a lower shell 802, the lower shell 802 has an installation cavity inside for installing the ejector 10, the drive wheel 20, the first limiting piece 30 and the second limiting piece 40, and the upper shell 801 covers the installation cavity, which can reduce the damage of external dust, stones and the like to the components inside the shell 80, and has good safety. The ejector 10, the drive wheel 20, the first limiting piece 30 and the second limiting piece 40 can be integrated in the installation cavity, and then the lower shell 802 can be installed on the machine body 200, and the lower shell 802 can be covered by the upper shell 801, so that the installation is more convenient.

[0076] In some embodiments, the machine body 200 is provided with a sliding groove 82 extending in the first direction, and the ejector 10 includes a sliding block 101 and a first ejector rod 102 connected with each other, the sliding block 101 is provided with a sliding convex part 14 matched with the sliding groove 82, and the sliding convex part 14 is slidably installed on the sliding groove 82, so that the ejector 10 is slidably installed on the machine body 200, and the movement of the ejector 10 in the first direction and the second direction is more stable, and the opening of the door body is smoother. For example, in some embodiments, as shown in Figure 2As shown, the shell 80 is provided with a sliding groove 82, and the shell 80 is mounted on the machine body 200, so that the ejector 10 is mounted on the machine body 200 through the shell 80.

[0077] The first ejector rod 102 extends along the first direction, and different lengths of the first ejector rod 102 can be replaced to change the first set position, thereby changing the opening angle of the door body.

[0078] In some embodiments of the utility model, as shown in Figures 2-6 As shown, the first limiting part 30 is a torsion spring 31, one end of the torsion spring 31 is hinged to the machine body 200, and the other end is eccentrically hinged to the driving wheel 20, so that during the rotation of the driving wheel 20, the other end of the torsion spring 31 moves with the rotation of the driving wheel 20, changes the distance and relative position of the two ends of the torsion spring 31, and the torsion spring 31 exerts a spring force on the driving wheel 20. Here, eccentric hinge refers to the position where the other end of the torsion spring 31 is hinged to the center of rotation of the driving wheel 20.

[0079] In the state that the ejector 10 moves to the first set position along the first direction, the other end of the torsion spring 31 is located on the side of the center of rotation of the driving wheel 20 along the second direction, so that the distance between the two ends of the torsion spring 31 in this state is less than the distance between the two ends of the torsion spring 31 in the state that the ejector 10 is located at the initial position, the two ends of the torsion spring 31 generate a spring force perpendicular to the extension direction of the torsion spring 31 and away from each other, and the torsion spring 31 exerts a driving force on the driving wheel 20 to make the driving wheel 20 rotate in the first rotation direction.

[0080] For example, in some embodiments, as shown in Figure 6 As shown, in the state that the ejector 10 moves forward to the first set position, the right end of the torsion spring 31 is located on the rear side of the center of rotation of the driving wheel 20, Figure 6 In the center of rotation of the driving wheel 20, a dashed line is drawn to show the horizontal position of the center of rotation of the driving wheel 20. In this state, the two ends of the torsion spring 31 are compressed, and the torsion spring 31 exerts a driving force on the driving wheel 20 to the rear and to the right, so that the driving wheel 20 has a tendency to rotate in the clockwise direction.

[0081] In the state that the torsion spring 31 is deformed, a torque or rotational force can be generated, so that the torsion spring 31 can move with the rotation of the driving wheel 20, and at the same time, the torsion spring 31 can exert a driving force on the driving wheel 20 to drive the driving wheel 20 to rotate, so that the torsion spring 31 can limit the driving wheel 20, and further limit the ejector 10, so that the limiting effect of the ejector 10 in the state of moving to the first set position along the first direction is better. By using the torsion spring 31 as the first limiting part 30, combining the cooperation of the first limiting part 30 and the driving wheel 20, and the transmission cooperation of the driving wheel 20 and the cooperation part 11, the limiting of the ejector 10 is realized, which is simple in structure, easy to realize, and the torsion spring 31 is easy to maintain and replace, which is economical.

[0082] In some embodiments not shown in the drawings, the first limiting member 30 comprises a first elastic member and a limiting block connected together, one end of the first elastic member is fixedly installed on the machine body 200, and the other end is connected with the limiting block, so that the limiting block can move with the deformation of the first elastic member. The first elastic member can be a component such as a tension spring with elasticity.

[0083] The limiting block has a limiting surface, and the limiting surface is in abutting cooperation with the driving wheel 20, so that in the process of rotation of the driving wheel 20, the limiting block moves with the rotation of the driving wheel 20, and then the first elastic member deforms to exert an elastic force on the limiting block.

[0084] In the state that the ejector 10 moves to the first set position, the abutting position of the driving wheel 20 and the limiting surface is located on the side of the rotation center of the driving wheel 20 along the second direction, in this state, the first elastic member exerts an elastic force on the limiting block towards the driving wheel 20, so that the limiting surface and the driving wheel 20 are always in abutment, and the abutting position of the driving wheel 20 and the limiting surface is located on the side of the rotation center of the driving wheel 20 along the second direction, so that the limiting block exerts a driving force on the driving wheel 20 to make the driving wheel 20 rotate in the first rotation direction.

[0085] For example, in some embodiments, the first elastic member is a tension spring which is stretchable along the length direction of the first elastic member, the left end of the first elastic member is installed on the lower shell 802, and the right end is located on the right front side of the left end, the limiting surface of the limiting block extends obliquely to the right and forward, the limiting block is connected with the right end of the first elastic member, and the limiting surface is always in abutment with the driving wheel 20. In the state that the ejector 10 moves to the first set position, the first elastic member is compressed compared with the state that the ejector 10 is located at the initial position, so that the first elastic member exerts an elastic force on the limiting block to the right and forward, and the abutting position of the driving wheel 20 and the limiting surface is located on the left rear side of the rotation center of the driving wheel 20, the limiting surface extends obliquely to the right and forward, so that the driving wheel 20 has a tendency to move to the right and backward under the action of the limiting block, that is, the driving wheel 20 has a tendency to rotate clockwise.

[0086] The first elastic member and the limiting block can limit the driving wheel 20, and then limit the ejector 10, so that the limiting effect of the ejector 10 in the state of moving to the first set position along the first direction is better. Moreover, the structure of the first elastic member and the limiting block is relatively simple, and easy to realize.

[0087] In some embodiments of the utility model, as shown in Figures 2-8 The door opening mechanism 100 comprises a second elastic member 50, the second elastic member 50 is installed on the machine body 200, and the second elastic member 50 is connected with the ejector 10, so that the ejector 10 can move with the deformation of the second elastic member 50. The second elastic member 50 can be a component such as a tension spring with elasticity.

[0088] When the ejector 10 moves to the first set position along the first direction, the second elastic member 50 applies a spring force to the ejector 10 along the second direction. The driving force applied to the ejector 10 by the first limiting member 30 through the drive wheel 20 is greater than the spring force applied to the ejector 10 by the second elastic member 50, so that the first limiting member 30 can prevent the ejector 10 from moving along the second direction, and the second limiting member 40 can prevent the ejector 10 from moving along the first direction, so that the ejector 10 can be kept in the state of moving to the first set position.

[0089] In some embodiments, such as Figures 3-5 and Figures 7-8 As shown, when the ejector 10 is moved to the state between the initial position and the second set position, and the drive wheel 20 is engaged with the mating part 11, the first limiting member 30 applies a driving force to the drive wheel 20 to rotate in the second rotation direction, causing the ejector 10 to tend to move in the second direction; when the drive wheel 20 is not engaged with the mating part 11, the first limiting member 30 does not apply force to the ejector 10. The initial position and the second set position are located on one side of the first set position along the second direction, and in the first direction, the distance between the initial position and the first set position is greater than the distance between the initial position and the second set position.

[0090] In this state, when the drive wheel 20 engages with the mating part 11, both the first limiting member 30 and the second elastic member 50 apply a driving force to the ejector 10, causing the ejector 10 to move along the second direction. This results in the driving forces of the first limiting member 30 and the second limiting member 40 on the ejector 10 being superimposed, leading to a greater force on the ejector 10 along the second direction. When the drive wheel 20 does not engage with the mating part 11, the first limiting member 30 does not apply force to the ejector 10, allowing the ejector 10 to move along the second direction under the action of the second elastic member 50. This enables the ejector 10 to move to its initial position more quickly during the closing process, achieving rapid reset of the ejector 10 and facilitating rapid door closure.

[0091] Of course, the ejector 10 can move along the first direction during the door opening process. Therefore, when the ejector 10 is located between the initial position and the second set position during the door opening process, the ejector 10 can continue to move along the first direction to the first set position. For example, during the door opening process, the ejector 10 is driven to move along the first direction by the drive member 60. The drive member 60 exerts a large driving force on the ejector 10, enabling the ejector 10 to move from the initial position to the second set position along the first direction.

[0092] In some embodiments, in the state that the ejector 10 moves between the first set position and the second set position, the driving force of the first limiting member 30 on the ejector 10 through the driving wheel 20 is less than the elastic force of the second elastic member 50 on the ejector 10. In this state, the first limiting member 30 drives the ejector 10 to move in the first direction through the driving wheel 20, and the second elastic member 50 drives the ejector 10 to move in the second direction, so that the ejector 10 can move in the second direction under the action of the elastic force of the second elastic member 50 in the door closing process, and the fast resetting of the ejector 10 is realized.

[0093] Of course, the ejector 10 can move in the first direction in the door opening process, so that in the state that the ejector 10 moves between the first set position and the second set position in the door opening process, the ejector 10 can continue to move to the first set position in the first direction. For example, the ejector 10 is driven to move in the first direction by the driving member 60 in the door opening process, and the driving force of the driving member 60 on the ejector 10 is large, so that the ejector 10 can move from the second set position to the first set position in the first direction.

[0094] In some embodiments, as shown in Figure 2 , in the state that the ejector 10 moves to the second set position, the second limiting member 40 releases the limiting of the ejector 10 or the driving wheel 20, the driving wheel 20 is engaged with the matching part 11, and the matching position of the driving wheel 20 and the first limiting member 30 is arranged perpendicularly to the first direction from the rotation center of the driving wheel 20. For example, in some specific embodiments, as shown in Figure 2 , the second limiting member 40 is separated from the ejector 10, the driving wheel 20 is engaged with the matching part 11, and the matching position of the driving wheel 20 and the first limiting member 30 is located at Figure 6 , so that the matching position of the driving wheel 20 and the first limiting member 30 and the rotation center of the driving wheel 20 are arranged along the left-right direction.

[0095] In the state that the ejector 10 moves to the second set position, the first limiting member 30 applies force to the driving wheel 20 along a direction perpendicular to the first direction (for example, the left-right direction in Figure 2 ), so that the first limiting member 30 does not rotate the driving wheel 20, and thus the first limiting member 30 does not apply force to the ejector 10 in the first direction or the second direction, so that the ejector 10 can move in the second direction under the action of the second elastic member 50, so that the ejector 10 moves to the side of the second set position in the second direction, and thus the matching position of the first limiting member 30 and the driving wheel 20 is located on the side of the rotation center of the driving wheel 20 in the first direction, so that the ejector 10 is subjected to the force in the second direction applied by the first limiting member 30 and the second elastic member 50, which is beneficial to the fast resetting of the ejector 10.

[0096] In some embodiments of the utility model, as shown inFigures 2-8 As shown, in the state that the ejector 10 moves to the first set position along the first direction, the ejector 10 can move to the second set position from the first set position along the second direction under the action of an external force, and continue to move along the second direction under the action of the first limiting piece 30 and the second elastic piece 50, so as to reset the ejector 10.

[0097] Here, the reset refers to the movement of the ejector 10 from other positions to the initial position, so that the ejector 10 is separated from the door body, so as to close the door body. The external force can be a force manually applied to the ejector 10 by a user. The external force can continuously act on the ejector 10 to move the ejector 10 to the second set position along the second direction. The external force can also be removed immediately after acting on the ejector 10, so that the ejector 10 moves to the second set position along the second direction under the action of inertia. It should be noted that, in the process that the ejector 10 moves to the second set position from the first set position along the second direction under the action of the external force, the external force along the second direction is greater than the combined force of other forces such as the elastic force of the second elastic piece 50, the driving force of the first limiting piece 30, and the friction force along the first direction, so that the ejector 10 can move to the second set position from the first set position along the second direction under the action of the external force.

[0098] In some related technologies, a wax motor is used to open the door of a dishwasher. The piston of the wax motor abuts against the door body and pushes the door body to open the door. During the closing process, the piston needs to be separated from the door body after the wax motor cools down, so as to close the door. The closing speed is slow.

[0099] However, the present application only needs to apply a small pushing force along the second direction to the ejector 10 in the state that the ejector 10 moves to the first set position along the first direction, so that the ejector 10 moves to the second set position along the second direction, thereby achieving the fast reset of the ejector 10 and the fast closing of the door. The fast reset of the ejector 10 is achieved by the first limiting piece 30 and the second elastic piece 50, without the need for waiting, so as to achieve the fast opening and closing of the door body. In the case that the user forgets to put or take out the tableware from the dishwasher 1000, the user can repeatedly open and close the door body, the practicality of the dishwasher 1000 is better, and the user experience is better.

[0100] In some embodiments, as shown in FIG. 1, Figures 3-8 As shown, the second elastic piece 50 is located on the side of the ejector 10 that is perpendicular to the first direction and away from the driving wheel 20, so that the driving wheel 20 and the second elastic piece 50 are located on the two sides of the ejector 10 that are perpendicular to the first direction. This can reduce the possibility of position interference between the driving wheel 20 and the second elastic piece 50, and improve the stability of the movement of the driving wheel 20 and the second elastic piece 50. For example, in some specific embodiments, as shown in FIG. 1, Figure 8As shown, the driving wheel 20 is located at the left side of the ejector 10, and the second elastic member 50 is located at the right side of the ejector 10.

[0101] In some embodiments of the utility model, as shown in the figure, Figures 2-8 As shown, the ejector 10 has a stroke limiting part 12, and the second limiting member 40 is a first stop protrusion 41 arranged on the machine body 200, and the first stop protrusion 41 is located on one side of the stroke limiting part 12 along the first direction. During the movement of the ejector 10 along the first direction, the stroke limiting part 12 of the ejector 10 gradually approaches the first stop protrusion 41 until the ejector 10 moves to the first set position along the first direction, and in this state, the stroke limiting part 12 abuts against the first stop protrusion 41 to prevent the ejector 10 from continuing to move along the first direction, and the first limiting member 30 and the driving wheel 20 can prevent the ejector 10 from moving along the second direction, so that the ejector 10 can be kept in the state of moving to the first set position. The structure of the stroke limiting part 12 and the first stop protrusion 41 is relatively simple, easy to realize, and has strong practicality.

[0102] In some embodiments, as shown in the figure, Figures 2-8 As shown, the first stop protrusion 41 is located at the right side of the main body part of the ejector 10 and at the front side of the stroke limiting part 12, the second elastic member 50 is located at the right side of the main body part of the ejector 10 and at the rear side of the stroke limiting part 12, and the second elastic member 50 is connected with the stroke limiting part 12, so that the stroke limiting part 12 can have the limiting function of cooperating with the first stop protrusion 41 and the reset function of cooperating with the second elastic member 50, thereby reducing the required parts and improving the compactness of the door opening mechanism 100.

[0103] In some embodiments of the utility model, as shown in the figure, Figures 2-8 As shown, the driving wheel 20 is provided with an eccentric guide part 21, the machine body 200 is provided with a guide groove 81 extending along the circumference of the driving wheel 20, the guide part 21 is movably inserted into the guide groove 81, and the guide groove 81 is formed in an arc shape. Here, the eccentric guide part 21 is arranged at a position of the driving wheel 20 spaced apart from the rotation center of the driving wheel 20, and the guide part 21 can be arranged at any position of the driving wheel 20 spaced apart from the rotation center, so that the first limiting member 30 can cooperate with any eccentric position of the driving wheel 20.

[0104] Through the cooperation of the guide part 21 and the guide groove 81, the rotation of the driving wheel 20 can be guided, which is beneficial to improve the rotation stability of the driving wheel 20, and thus the limiting effect of the first limiting member 30 on the ejector 10 is better.

[0105] In some embodiments, as shown in the figure, Figures 3-8As shown, the guide groove 81 is located between the first limiting member 30 and the driving wheel 20. The first limiting member 30 is a torsion spring 31, and the right end of the torsion spring 31 is hinged to the guide portion 21, so that the guide portion 21 has both the guide function of cooperating with the guide groove 81 and the limiting function of cooperating with the torsion spring 31. Without hinging other eccentric positions of the driving wheel 20 to the right end of the torsion spring 31 except the guide portion 21, the structure of the driving wheel 20 can be simplified.

[0106] In some embodiments, in the state where the ejector 10 moves to the second set position, the guide portion 21, i.e., the position where the first limiting member 30 cooperates with the driving wheel 20, is located in the position shown by the dashed line in the guide groove 81. Figure 6

[0107] In some embodiments, one end wall of the guide groove 81 is formed as the second limiting member 40. In the state where the ejector 10 moves to the first set position in the first direction, the guide portion 21 abuts against the one end wall of the guide groove 81, so that the driving wheel 20 cannot continue to rotate in the first rotation direction, and the ejector 10 cannot continue to rotate in the first direction, thereby limiting the movement of the ejector 10 in the first direction in the state. In combination with the first limiting member 30 limiting the movement of the ejector 10 in the second direction by the driving wheel 20, the ejector 10 cannot move in the second direction, so that the ejector 10 can be kept in the state of moving to the first set position, so that the opening angle of the door body can be positioned at the predetermined opening angle.

[0108] The one end wall of the guide groove 81 is formed as the second limiting member 40, so that the guide groove 81 has both the guide function of the driving wheel 20 and the limiting function of the ejector 10, which can reduce the required parts of the door opening mechanism 100 and make the structure of the door opening mechanism 100 more compact.

[0109] For example, in some embodiments, the driving wheel 20 is located on the right side of the guide groove 81, the first limiting member 30 is located on the left side of the guide groove 81, and the right and upper one end wall of the guide groove 81 is formed as the second limiting member 40. During the forward movement of the ejector 10, the driving wheel 20 rotates in the clockwise direction, so that the guide portion 21 moves in the clockwise direction around the rotation center of the driving wheel 20 in the guide groove 81. When the guide portion 21 moves to the right upper end of the guide groove 81, i.e., abuts against the second limiting member 40, the driving wheel 20 cannot continue to rotate in the clockwise direction, so that the ejector 10 cannot continue to move forward. At this time, the ejector 10 is located in the first set position, and in combination with the first limiting member 30 preventing the backward movement of the ejector 10 by the driving wheel 20, the ejector 10 can be kept in the state of moving to the first set position.

[0110] ​In some embodiments of the utility model, the ejector 10 has a stroke limiting part 12, the machine body 200 is equipped with a second stop convex part, the second stop convex part is located on one side of the stroke limiting part 12 along the second direction, and in the state that the ejector 10 moves to the initial position along the second direction, the second stop convex part abuts against the stroke limiting part 12 to prevent the ejector 10 from continuing to move along the second direction. During the movement of the ejector 10 along the second direction, the stroke limiting part 12 of the ejector 10 gradually approaches the second stop convex part until the ejector 10 moves to the initial position, and in this state, the stroke limiting part 12 abuts against the second stop convex part to prevent the ejector 10 from continuing to move along the second direction, thereby limiting the reset of the ejector 10 to the initial position and facilitating the next work of the door opening mechanism 100. The stroke limiting part 12 and the second stop convex part have relatively simple structures, are easy to realize, and have relatively strong practicability.

[0111] In some embodiments, the second stop convex part is located on the right side of the main body part of the ejector 10 and on the rear side of the stroke limiting part 12, and the second elastic member 50 is located on the right side of the main body part of the ejector 10 and is connected with the stroke limiting part 12, so that the stroke limiting part 12 can have the limiting function of cooperating with the second stop convex part and the reset function of cooperating with the second elastic member 50, thereby reducing the required parts and improving the compactness of the structure of the door opening mechanism 100.

[0112] In some embodiments of the utility model, as shown in Figures 2-8 The door opening mechanism 100 includes a driving member 60, the driving member 60 is installed on the machine body 200, and the driving member 60 is used for applying a driving force to the ejector 10 to move the ejector 10 along the first direction. The driving member 60 can be a wax motor, a general motor or the like, and can apply a driving force to the ejector 10 to enable the ejector 10 to move along the first direction. The driving member 60 is easy to obtain and is beneficial to reducing the manufacturing difficulty of the door opening mechanism 100.

[0113] In some embodiments, as shown in Figures 2-8 The door opening mechanism 100 includes a connecting rod 70, the connecting rod 70 is rotatably installed on the machine body 200, the connecting rod 70 includes a first arm part 71 and a second arm part 72, the driving member 60 cooperates with the first arm part 71 and is used for driving the connecting rod 70 to move along a set direction (for example Figure 4The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100.

[0114] For example, in some embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100.

[0115] For example, in some embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100.

[0116] For example, in some embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100. For example, in some specific embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100.

[0117] For example, in some embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100. For example, in some specific embodiments, as shown in Figures 3-8 The driving member 60 and the ejector 10 are located on the same side of the connecting rod 70, which facilitates the utilization of the installation space on one side of the connecting rod 70 and improves the structural compactness of the door opening mechanism 100.

[0118] For example, in some embodiments, as shown in Figures 2-8As shown, the drive member 60 includes a second push rod 61. The drive member 60 drives the second push rod 61 to move backward, so that the second push rod 61 pushes the first arm 71 to rotate the connecting rod 70. The second push rod 61 can increase the rotatable angle of the connecting rod 70, thereby extending the movable displacement of the ejector 10 along the first direction and increasing the opening angle that the dishwasher 1000 can achieve, which is beneficial to meeting user needs.

[0119] In some embodiments, such as Figures 2-8 As shown, one of the second arm 72 and the ejector 10 has a waist-shaped hole 721 and the other has a protrusion 13. The protrusion 13 is movably hinged within the waist-shaped hole 721 along its length, allowing the protrusion 13 to move along the length of the waist-shaped hole 721. During the rotation of the connecting rod 70 around its own rotation center, the portion of the second arm 72 with the waist-shaped hole 721 or the protrusion 13 also rotates around the rotation center of the connecting rod 70, while the portion of the ejector 10 with the protrusion 13 or the waist-shaped hole 721 moves along the first direction, which may cause interference between the movement of the connecting rod 70 and the ejector 10. However, by utilizing the cooperation of the waist-shaped hole 721 and the protrusion 13, while the portion of the second arm 72 with the waist-shaped hole 721 or the protrusion 13 rotates around the rotation center of the connecting rod 70, the portion of the ejector 10 with the protrusion 13 or the waist-shaped hole 721 moves along the first direction. The protrusion 13 is hinged in the waist-shaped hole 721, which helps to reduce the risk of interference between the connecting rod 70 and the ejector 10, improves the stability of the drive member 60 driving the ejector 10 to move along the first direction through the connecting rod 70, and makes the door of the dishwasher 1000 open more smoothly.

[0120] One of the second arm 72 and the ejector 10 can be integral with or separate from the protrusion 13. For example, in an embodiment where the ejector 10 and the protrusion 13 are separate parts, such as... Figures 2-8 As shown, protrusion 13 can be a pin or other component.

[0121] The door opening mechanism 100 and dishwasher 1000 according to a specific embodiment of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0122] like Figures 1-8 As shown, a dishwasher 1000 according to a specific embodiment of the present invention includes a body 200, a door and an opening mechanism 100. The door is located on the front side of the body 200 to close or open the washing chamber 210 inside the body 200. The opening mechanism 100 is installed on the body 200 and is used to push the door into the washing chamber 210.

[0123] The door opening mechanism 100 comprises the ejector 10, the driving wheel 20, the first limiting member 30, the second limiting member 40, the second elastic member 50, the connecting rod 70, the driving member 60 and the shell 80. The shell 80 comprises the upper shell 801 and the lower shell 802, the lower shell 802 is mounted on the machine body 200, and the lower shell 802 has a mounting cavity inside for mounting the ejector 10, the driving wheel 20, the first limiting member 30, the second elastic member 50, the driving member 60 and the connecting rod 70, and the upper shell 801 covers the mounting cavity of the upper shell 801.

[0124] The ejector 10 comprises the sliding block 101 and the first ejector rod 102 arranged in the front-rear direction and connected, the sliding block 101 and the first ejector rod 102 are connected by the fastener 90 such as a screw, the first ejector rod 102 extends in the front-rear direction, and the ejector 10 is movably mounted on the lower shell 802 in the front-rear direction. Specifically, the lower shell 802 is provided with the sliding groove 82, the sliding block 101 is provided with the sliding convex part 14 matched with the sliding groove 82, and the sliding convex part 14 is slidably mounted in the sliding groove 82.

[0125] The sliding block 101 has the stroke limiting part 12 on the right side, the second limiting member 40 is the first stop convex part 41 provided on the lower shell 802, and the first stop convex part 41 is located below the stroke limiting part 12. The left side of the sliding block 101 is provided with the matching part 11, and the matching part 11 is a rack part comprising three tooth parts.

[0126] The driving wheel 20 is a ratchet wheel, the ratchet wheel is rotatably mounted on the lower shell 802 and located on the left side of the sliding block 101, and the ratchet wheel is in mesh transmission during contact with the rack part. The ratchet wheel is provided with the eccentric guide part 21, the lower shell 802 is provided with the guide groove 81 extending along the circumference of the ratchet wheel, the guide groove 81 is formed in an arc shape, the guide groove 81 is located on the left side of the ratchet wheel, and the guide part 21 is movably inserted into the guide groove 81.

[0127] The first limiting member 30 is a torsion spring 31, and the torsion spring 31 is located on the left side of the guide groove 81. The left end of the torsion spring 31 is hinged to the lower shell 802, and the right end of the torsion spring 31 is hinged to the guide part 21. The second elastic member 50 is a tension spring and is located on the right side of the sliding block 101, the rear end of the tension spring is mounted on the lower shell 802, and the front end is mounted on the stroke limiting part 12.

[0128] The driving member 60 is a wax motor, and is located at the left side of the torsion spring 31. The driving member 60 includes a second top rod 61, and the driving member 60 drives the second top rod 61 to be movable in the front-back direction. The connecting rod 70 is rotatably installed at the lower shell 802 and located at the rear side of the ejector 10, the driving wheel 20, the first limiting member 30 and the driving member 60. The connecting rod 70 includes a first arm portion 71 and a second arm portion 72 connected with each other. The first arm portion 71 is located at the left side of the second arm portion 72 and cooperates with the second top rod 61. The second arm portion 72 is provided with a waist-shaped hole 721, and the slider 101 is provided with a protrusion 13 in the form of a pin. The pin is movably hinged in the waist-shaped hole 721 along the length direction of the waist-shaped hole 721.

[0129] The working process of the door opening mechanism 100 in the dishwasher 1000 is described below.

[0130] In the door body closed state, the ejector 10 is located at the initial position. First, the second top rod 61 is moved backward by the driving member 60. The second top rod 61 pushes the first arm portion 71 to make the connecting rod 70 rotate in the clockwise direction, so that the second arm portion 72 pushes the ejector 10 to move forward. The first top rod 102 of the ejector 10 moves forward to extend out of the shell 80, pushes the door body, and drives the door body to open.

[0131] In the process of moving the ejector 10 forward, the rack portion of the slider 101 moves forward to be close to the ratchet wheel. The rack portion moves forward to mesh with the ratchet wheel to drive the ratchet wheel to rotate in the clockwise direction. The guide portion 21 rotates in the clockwise direction around the rotation center of the ratchet wheel in the guide groove 81. The torsion spring 31 is deformed to apply a driving force to the ratchet wheel, and the second elastic member 50 is stretched and deformed to apply a backward elastic force to the stroke limiting portion 12.

[0132] In the state that the ejector 10 moves forward to the initial position and the second set position, the cooperation position of the torsion spring 31 and the ratchet wheel, i.e. the guide portion 21, is located at the lower side of the rotation center of the ratchet wheel. The torsion spring 31 is deformed to apply a driving force to the ratchet wheel to drive the ratchet wheel to rotate in the counterclockwise direction, and further to apply a backward driving force to the slider 101. However, the forward pushing force applied by the second arm portion 72 to the slider 101 is greater than the sum of the backward force applied by the tension spring to the slider 101 and the backward force applied by the torsion spring 31 to the slider 101 through the ratchet wheel, so that the ejector 10 continues to move forward. The second set position is located at the front side of the initial position.

[0133] In the state that the ejector 10 moves forward to the second set position, the rack portion is engaged with the ratchet wheel, the travel limiting portion 12 is still separated from the first stop protrusion 41, the left end of the torsion spring 31, the guide portion 21 and the rotation center of the ratchet wheel are arranged along the left-right direction, so that the torsion spring 31 applies a driving force to the ratchet wheel along the horizontal direction of the rotation center of the ratchet wheel, that is, the ratchet wheel does not rotate under the action of the torsion spring 31, and the slider 101 continues to move forward under the pushing force of the second arm portion 72.

[0134] In the state that the ejector 10 moves forward to the second set position and the first set position, the guide portion 21 is located on the upper side of the rotation center of the ratchet wheel, the torsion spring 31 is deformed to apply a driving force to the ratchet wheel to drive the ratchet wheel to rotate in the clockwise direction, and further apply a forward driving force to the slider 101. The forward force applied to the slider 101 by the torsion spring 31 through the ratchet wheel is greater than the backward force applied to the slider 101 by the tension spring, so that the ejector 10 continues to move forward. The first set position is located on the front side of the second set position.

[0135] In the state that the ejector 10 moves forward to the first set position, the guide portion 21 is located on the upper side of the rotation center of the ratchet wheel, and the torsion spring 31 applies a forward driving force to the slider 101 through the ratchet wheel. At this time, the travel limiting portion 12 abuts against the first stop protrusion 41 on the front side, and the forward movement of the ejector 10 is prevented by the first stop protrusion 41. The forward force applied to the slider 101 by the torsion spring 31 through the ratchet wheel is greater than or equal to the backward force applied to the slider 101 by the tension spring, so as to prevent the ejector 10 from moving backward. The ejector 10 can be limited in the state of moving forward to the first set position, the size of the first ejector rod 102 extending out of the housing 80 is kept unchanged, the opening angle of the door body is kept at the current opening angle, that is, the predetermined opening angle, and the drying effect is relatively stable.

[0136] When it is needed to close the door body, only a small backward external force needs to be applied to the ejector 10, for example, a manual backward pushing force is applied to the ejector 10, so that the ejector 10 moves backward from the first set position to the second set position.

[0137] In the state that the ejector 10 is located at the second set position, the torsion spring and the ratchet wheel do not apply a forward or backward force to the ejector 10, so that the ejector 10 can quickly move backward to the initial position and the second set position under the action of the tension spring.

[0138] In the state that the ejector 10 is located between the initial position and the second set position, the torsion spring applies a backward driving force to the ejector 10 through the ratchet wheel, and the tension spring applies a backward elastic force to the ejector 10, so as to realize the quick reset of the ejector 10 moving backward to the initial position, separate the door body from the ejector 10, and facilitate the closing of the door body.

[0139] Using the door opening mechanism 100 and the dishwasher 1000 of the embodiment, the ejection piece 10 can be kept in the state of moving forward to the first set position, the opening angle of the door body is kept at the predetermined opening angle, the drying effect is improved, and the ejection piece 10 can be quickly reset to close the door body when the door needs to be closed, so that the operation is convenient.

[0140] Other configurations and operations of the door opening mechanism 100 and the dishwasher 1000 according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0141] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0142] In the description of the present application, the description of the terms "embodiment", "specific embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0143] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A door opening mechanism for a dishwasher, characterized in that, include: An ejector, having a mating part, is mounted on one of the dishwasher's body and door, and is adapted to move in a first direction to apply a pushing force to the other of the body and door to drive the door to open; A drive wheel is rotatably mounted on one of the body and the door. During the movement of the ejector in the first direction, the mating part engages with the drive wheel to cause the drive wheel to rotate in the first rotation direction. During the movement of the ejector in the second direction, the mating part engages with the drive wheel to cause the drive wheel to rotate in the second rotation direction. The first direction and the second direction are opposite, and the first rotation direction and the second rotation direction are opposite. A first limiting member is installed in one of the machine body and the door body, and the first limiting member cooperates with the drive wheel; The second limiting member is installed in one of the machine body and the door body; When the ejector has moved to a first set position along the first direction, the first limiting member applies a driving force to drive the drive wheel to rotate along the first rotation direction to prevent the ejector from moving along the second direction. The second limiting member limits the ejector or the drive wheel to prevent the ejector from continuing to move along the first direction.

2. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The first limiting member is a torsion spring. One end of the torsion spring is hinged to one of the machine body and the door body, and the other end is eccentrically hinged to the drive wheel. When the ejector moves to the first set position along the first direction, the other end of the torsion spring is located on one side of the rotation center of the drive wheel along the second direction.

3. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The device includes a second elastic element, which is installed in one of the body and the door, and is connected to the ejector. When the ejector moves to the first set position along the first direction, the second elastic element applies a spring force along the second direction to the ejector. The driving force applied to the ejector by the first limiting member through the drive wheel is greater than the spring force applied to the ejector by the second elastic element.

4. The door opening mechanism of the dishwasher according to claim 3, characterized in that, When the ejector is moved to the state between the initial position and the second set position, the first limiting member applies a driving force to the drive wheel to drive the drive wheel to rotate in the second rotation direction; And / or, when the ejector is moved to between the first set position and the second set position, the driving force applied by the first limiting member to the ejector through the driving wheel is less than the elastic force applied by the second elastic member to the ejector, the initial position and the second set position are located on one side of the first set position along the second direction, and in the first direction, the distance between the initial position and the first set position is greater than the distance between the initial position and the second set position.

5. The door opening mechanism of the dishwasher according to claim 4, characterized in that, When the ejector is moved to the second set position, the drive wheel engages with the mating part, the mating part of the drive wheel and the first limiting member and the rotation center of the drive wheel are arranged perpendicular to the first direction, and the second limiting member releases its restriction on the ejector or the drive wheel.

6. The door opening mechanism of the dishwasher according to claim 4, characterized in that, When the ejector has moved to the first set position along the first direction, the ejector is adapted to move from the first set position to the second set position along the second direction under the action of an external force, and continue to move along the second direction under the action of the first limiting member and the second elastic member to reset the ejector.

7. The door opening mechanism of the dishwasher according to claim 3, characterized in that, The second elastic element is located on the side of the ejector that is perpendicular to the first direction and away from the drive wheel.

8. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The ejector has a travel limiting portion, and the second limiting portion is a first stop protrusion provided in one of the body and the door. The first stop protrusion is located on one side of the travel limiting portion along the first direction. When the ejector moves to the first set position along the first direction, the first stop protrusion abuts against the travel limiting portion to limit the ejector.

9. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The drive wheel is provided with an eccentrically positioned guide portion, and one of the body and the door body is provided with a guide groove extending circumferentially along the drive wheel, and the guide portion is movably inserted into the guide groove.

10. The door opening mechanism of the dishwasher according to claim 9, characterized in that, One end of the guide groove is formed as the second limiting member. When the ejector moves along the first direction to the first set position, the guide part abuts against one end of the guide groove to limit the drive wheel.

11. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The device includes a drive unit, which is mounted on one of the body and the door, and the drive unit is used to apply a driving force to the ejector to move the ejector along the first direction.

12. The door opening mechanism of the dishwasher according to claim 11, characterized in that, The device includes a connecting rod rotatably mounted on one of the machine body and the door body. The connecting rod includes a first arm and a second arm. A driving member cooperates with the first arm and drives the connecting rod to rotate in a set direction. An ejector cooperates with the second arm. The connecting rod rotates in the set direction so that the second arm drives the ejector to move in the first direction.

13. The door opening mechanism of the dishwasher according to claim 1, characterized in that, The device includes a housing, which is installed in one of the body and the door. The ejector, the drive wheel, the first limiting member, and the second limiting member are all disposed within the housing. The ejector is adapted to extend out of the housing to apply a thrust to the other of the body and the door.

14. The door opening mechanism of the dishwasher according to claim 1, characterized in that, One of the body and the door is provided with a slide groove extending along the first direction. The ejector includes a connected slider and a first ejector rod. The slider is provided with a sliding protrusion that cooperates with the slide groove. The sliding protrusion is slidably mounted in the slide groove. The first ejector rod extends along the first direction.

15. The door opening mechanism of the dishwasher according to any one of claims 1-14, characterized in that, The ejector is installed on the body, the first direction is from back to front, the second direction is from front to back, and the door is located on the front side of the body.

16. A dishwasher, characterized in that, Includes the door opening mechanism of the dishwasher according to any one of claims 1-15.

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