CN213015912U

CN213015912U - Automatic door opening mechanism and dish washing machine

Info

Publication number: CN213015912U
Application number: CN202021373290.1U
Authority: CN
Inventors: 任富佳; 马涛; 贺晓帆; 姚春晓; 包自超; 张永松; 张凯源; 刘洋; 汪寅
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-20
Anticipated expiration: 2030-07-13

Abstract

The utility model provides an automatic door opening mechanism and a dish washing machine, relating to the technical field of kitchen appliances, wherein the automatic door opening mechanism comprises a driving piece, an eccentric rotating piece, a connecting piece and a moving piece; the driving part is arranged on the machine body, the eccentric rotating part is connected to the driving part, the connecting part is rotatably connected to the machine body, the connecting part can be connected with the eccentric rotating part, the moving part is movably connected to the machine body, one end of the moving part is arranged corresponding to the door body, and the other end of the moving part can be connected with the connecting part; the automatic door opening mechanism further comprises a microswitch, the microswitch is electrically connected with the control piece, the driving piece is electrically connected with the control piece, and one of the eccentric rotating piece, the connecting piece and the moving piece can drive the microswitch to be switched on or switched off so as to control the working state of the driving piece through the control piece. The dishwasher comprises the automatic door opening mechanism. The utility model provides a wearing and tearing scheduling problem between cam and the push rod, and improved the running accuracy.

Description

Automatic door opening mechanism and dish washing machine

Technical Field

The utility model belongs to the technical field of the kitchen appliance technique and specifically relates to an automatic mechanism and dish washer of opening door is related to.

Background

Dishwashers are becoming increasingly popular with users as a dish washing apparatus that releases both hands of a person.

In order to facilitate the opening of the door body, some dish washing machines on the market are provided with automatic door opening mechanisms for automatically opening the door body, however, the automatic door opening mechanisms generally directly push a push rod through a cam and drive a dish washing machine door to be opened through the push rod, in the process, the push rod moves along a straight line due to the rotation of the cam and is in direct contact with the cam and the push rod, so that the cam or the push rod is damaged due to the friction effect, and the normal opening of the dish washing machine door is influenced in the past.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic mechanism of opening door to alleviate cam and push rod direct contact and appear the technical problem of wearing and tearing easily.

The utility model provides a pair of automatic door opening mechanism is used for realizing at least that the door body is opened for the organism, automatic door opening mechanism includes: the device comprises a driving piece, an eccentric rotating piece, a connecting piece and a moving piece;

the driving part is arranged on the machine body, the eccentric rotating part is connected to the driving part, the connecting part is rotatably connected to the machine body and can be connected with the eccentric rotating part, the moving part is movably connected to the machine body, one end part of the moving part is arranged corresponding to the door body, and the other end part of the moving part can be connected with the connecting part; the driving piece is configured to drive the eccentric rotating piece to rotate, and the door body can be opened through the connecting piece and the moving piece;

the automatic door opening mechanism further comprises a microswitch, the microswitch is electrically connected with a control piece arranged on the machine body, the driving piece is electrically connected with the control piece, one of the eccentric rotating piece, the connecting piece and the moving piece can drive the microswitch to be switched on or off, and the working state of the driving piece is controlled by the control piece according to the on-off state of the microswitch.

Furthermore, the eccentric rotating part is a cam, the connecting part is a connecting rod, and the moving part is a push rod;

the middle part of the connecting rod is hinged to the machine body, and the cam and the push rod can be correspondingly connected with the parts of the connecting rod, which are positioned at the two sides of the hinged part, respectively;

the driving piece is configured to drive the cam to rotate, and the cam drives the push rod to extend out relative to the machine body through the connecting piece so as to push the door body to be opened through the push rod.

Furthermore, the outer contour of the cam can be abutted against one end part of the connecting rod at the hinge joint, the other end part of the push rod is hinged with the other end part of the connecting rod at the hinge joint, and the cam and the push rod are positioned on the same side of the connecting rod; the automatic door opening mechanism also comprises a return piece which is used for enabling the push rod to have a movement trend away from the door body;

or the cam is provided with a track groove, one end part of the connecting rod at the hinge joint is provided with a connecting column which is matched with the track groove, and the connecting column can move in the track groove; the other end of the push rod is hinged with the other end of the connecting rod at the hinge joint.

one end of the connecting rod is hinged to the machine body, and the cam and the push rod can be correspondingly connected with the part of the connecting rod, which is positioned on the same side of the hinged position;

Furthermore, the outer contour of the cam can be abutted against the middle part of the connecting rod, the other end of the push rod is hinged with one end of the connecting rod, which is far away from the hinge, and the cam and the push rod are respectively positioned on two opposite sides of the connecting rod; the automatic door opening mechanism also comprises a return piece which is used for enabling the push rod to have a movement trend away from the door body;

or the cam is provided with a track groove, the middle part of the connecting rod is provided with a connecting column which is matched with the track groove, the connecting column can move in the track groove, and the other end of the push rod is hinged with one end, far away from the hinged part, of the connecting rod.

Further, when the automatic door opening mechanism comprises a return piece, the return piece is a tension spring or a compression spring.

Further, when the push rod is hinged to the connecting rod, a floating space is formed at the hinged position of the push rod and the connecting rod or the hinged position of the connecting rod and the machine body, so that the push rod can be driven to move along a straight line when the connecting rod rotates.

Furthermore, one of the push rod and the machine body is provided with a guide groove, and the other one of the push rod and the machine body is provided with a guide piece, wherein the guide piece is arranged in the guide groove in a matching manner, so that the push rod can move towards or away from the door body along a straight line relative to the machine body.

Furthermore, the micro switch is arranged at a position close to the connecting rod, the push rod is far away from the door body and can be switched on in the motion process of the micro switch, or the push rod moves towards the door body and can be switched off in the motion process of the micro switch.

A dishwasher, comprising the automatic door opening mechanism;

wherein, the organism is the dishwasher housing, the door body is the dishwasher door, the dishwasher door set up in one side or top of the dishwasher housing.

Has the advantages that:

the utility model provides an automatic door opening mechanism, including driving piece, eccentric rotating member, connecting piece and moving member, can drive eccentric rotating member through the driving piece and revolve, drive the connecting piece by eccentric rotating member and rotate (swing), the rotation of connecting piece then can drive the moving member and move towards the door body for the organism at least, from this, can push the door body that covers on the organism away through the moving member; the automatic door opening mechanism also comprises a microswitch, the microswitch is electrically connected with a control piece of the machine body, and a driving piece is also electrically connected with the control piece, therefore, when the control piece receives a signal of opening the door body sent by the microswitch, a door opening signal is sent to the driving piece, the driving piece starts to work and moves through the eccentric rotating piece, the connecting piece and the moving piece in sequence, so that the moving piece extends outwards relative to the machine body and pushes the door body away through the moving piece; then along with the driving piece continuation work, the moving member removes towards the direction of keeping away from the door body gradually, promptly, retract in to the organism gradually, at a certain moment, eccentric rotating member, one among connecting piece and the moving member orders about the micro-gap switch-on, micro-gap switch then sends stop information to the control this moment, thereby, under the control action of control, driving piece stop work, at this moment, the moving member then retracts back to initial position, promptly, the moving member is arranged in the tip shrink to the organism of the top push door body, so that follow-up door body can continue to cover and close on the organism, to this point, the process of opening the door has been accomplished through automatic mechanism of opening the door.

To sum up, through eccentric rotating member, the cooperation of connecting piece and moving member is used, cooperate eccentric rotating member and connecting piece, eccentric rotating member converts the rotary motion mode of whole circle into the rotation mode of the certain angle of connecting piece, the rethread connecting piece converts the rotation mode of certain angle into the moving means of moving member, thereby, the direct drive mode with the push rod contact of cam among the prior art has been changed, greatly reduced the wearing and tearing between two contact part of cam and push rod, and then improved the life of spare part in the automatic mechanism of opening the door, the long-time normal operating of the automatic mechanism of opening the door has been guaranteed.

And, through the cooperation use of micro-gap switch and control, can open the back at the door body along with the successive action of driving piece, eccentric rotating member and connecting piece, make the moving piece return to initial condition and stop moving to follow-up cover the body again on the organism, thereby compare and adopt the spacing mode of mechanical structure among the prior art, improved the feedback precision, and then guaranteed the operation precision of automatic door opening mechanism.

The utility model also provides a dish washer, including above-mentioned automatic mechanism of opening door, including the technical advantage that above-mentioned automatic mechanism of opening door had from this, in addition, still have following technical advantage: this dish washer is convenient for opening of the door body through automatic mechanism of opening the door to the moist gas of dish washer inside of being convenient for is scattered outward, makes the easy drying of tableware after the washing, has improved the drying index (drying property) of dish washer to a certain extent, meanwhile, has avoided some dish washers to blow hot-blast mode through the heating and to dish washer inside, thereby has practiced thrift the electric energy, has improved energy efficiency index to a certain extent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an automatic door opening mechanism according to a first form provided in an embodiment of the present invention in an initial state;

fig. 2 is a schematic view of an automatic door opening mechanism according to a first form provided in an embodiment of the present invention in a door opening state;

fig. 3 is a schematic view of an automatic door opening mechanism of a second form according to an embodiment of the present invention in an initial state;

fig. 4 is a schematic view of an automatic door opening mechanism according to a third form provided by an embodiment of the present invention in a door opening state;

fig. 5 is a schematic view of an automatic door opening mechanism according to a fourth form in a door opening state according to an embodiment of the present invention;

fig. 6 is a schematic view of an automatic door opening mechanism of a fifth form according to an embodiment of the present invention in an initial state;

fig. 7 is a schematic view of an automatic door opening mechanism according to a sixth form in an initial state according to an embodiment of the present invention;

fig. 8 is a schematic view of an automatic door opening mechanism according to a seventh form provided in the embodiment of the present invention in a door opening state;

fig. 9 is a schematic view of an eighth form of automatic door opening mechanism according to an embodiment of the present invention in a door opening state;

FIG. 10 is a first schematic view of a dishwasher in accordance with an embodiment of the present invention;

fig. 11 is a second schematic view of a dishwasher according to an embodiment of the present invention.

Icon:

100-dishwasher door;

200-dishwasher housing;

300-automatic door opening mechanism;

310-a drive member; 320-an eccentric rotating member; 321-a track groove; 330-a connector; 331-connecting column; 340-a moving member; 350-a return member; 360-micro switches; 370-rotating shaft.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment provides a dishwasher, as shown in fig. 1 to 11, which is used for automatically cleaning tableware, and includes a dishwasher housing 200, a dishwasher mechanism located in the dishwasher housing 200, and a dishwasher door 100 disposed at an opening of the dishwasher housing 200, wherein the detailed scheme and the dishwasher principle of the dishwasher mechanism, the connection relationship between the dishwasher housing 200 and the dishwasher door 100, and the like, all refer to the prior art, and are not described in detail herein. After the washing procedure is ended to dishwasher, push away certain angle through automatic mechanism 300 with dishwasher door 100, the user takes out the tableware or opens the door body completely on the one hand, and, open dishwasher door 100 through automatic mechanism 300, can also give off the inside humid air of dishwasher, the tableware drying of being convenient for, promote dishwasher's drying index, and simultaneously, compare some in prior art and heat through the heating plate, and blow the mode with dry tableware to dishwasher inside with the gas of heating, the dishwasher that this embodiment provided need not the heating power consumption, the electric energy has been practiced thrift to a certain extent, dishwasher's energy efficiency index has been promoted.

Further, the dishwasher door 100 may be disposed at the top of the dishwasher housing 200 and may also be located at one side, and in this embodiment, mainly aims at the manner that the dishwasher door 100 is disposed at one side of the dishwasher housing 200, that is, the opening of the dishwasher door 100 from the side of the dishwasher housing 200 is realized through the automatic door opening mechanism 300.

Of course, the automatic door opening mechanism 300 is not limited to be applied to a dishwasher, but may be applied to other products, such as an oven, a steam box, and the like, and the specific application scenario is not limited.

With respect to the automatic door opening mechanism 300 of the dishwasher, the specific structure thereof will be explained below with reference to fig. 1 to 9:

the embodiment provides an automatic door opening mechanism 300, which includes a driving member 310, an eccentric rotating member 320, a connecting member 330, a moving member 340 and a micro switch 360, wherein the driving member 310 is disposed on a machine body, the eccentric rotating member 320 is connected to an output shaft of the driving member 310 in a transmission manner, the connecting member 330 is rotatably (swingably) connected to the machine body, specifically, rotatably connected to the machine body via a rotating shaft 370, the moving member 340 is movably connected to the machine body, preferably, the moving member moves in a direction close to or away from a door body, of course, the direction is not limited to this direction, for example, a smaller included angle is formed with this direction, as long as the pushing of the door body to open is not affected, the connecting member 330 is disposed corresponding to the eccentric rotating member 320, and the connecting member 330 is disposed corresponding to the moving member 340, so that under the driving action of the driving member 310, the eccentric rotating member, and, the rotating connecting piece 330 drives the moving piece 340 to move towards the door body relative to the machine body, so as to push the door body open.

It should be noted here that the connection member 330 can be connected to the eccentric rotary member 320, specifically, the eccentric rotary member 320 gradually abuts against the connection member 330 during the rotation process, the eccentric rotary member 320 always abuts against the connection member 330 (the preferred embodiment of the present embodiment), and the eccentric rotary member 320 always connects with the connection member 330 (other embodiments, for example, there is a track groove 321 on the eccentric rotary member 320). Similarly, the position of the moving member 340 far away from the door body can be connected with the connecting member 330 specifically, the connecting member 330 abuts against the moving member 340 gradually in the rotating process, the connecting member 330 abuts against the moving member 340 (in other embodiments), and the connecting member 330 is connected with the moving member 340 (in this embodiment, the connecting member is preferably hinged, and the hinged position has a certain floating space). Of course, the connection mode between the eccentric rotating member 320 and the connecting member 330 and the connection mode between the connecting member 330 and the moving member 340 need to be selected comprehensively, so that the driving member 310 can drive the door body to be opened through the eccentric rotating member 320, the connecting member 330 and the moving member 340, and the moving member 340 can be retracted.

Further, the automatic door opening mechanism 300 further includes a micro switch 360, the micro switch 360 is electrically connected to a control element of the machine body, the driving element 310 is also electrically connected to the control element, therefore, when the control element receives a signal sent by the micro switch 360 to open the door body, the control element sends a door opening signal to the driving element 310, the driving element 310 starts to work and moves through the eccentric rotating element 320, the connecting element 330 and the moving element 340 in sequence, so that the moving element 340 extends outwards relative to the machine body and pushes the door body away through the moving element 340, and in the process that the moving element 340 extends outwards relative to the machine body, the micro switch 360 is switched from the on state to the off state and keeps the off state, in this process, the micro switch 360 does not send stop information to the driving element 310 through the control element until the driving element 310 drives the moving element 340 to extend outwards to the maximum distance relative to, the door body is opened to the maximum at the moment; then, along with the driving part 310 continues to work, the moving part 340 gradually moves towards the direction far away from the door body, namely, gradually retracts into the machine body, at a certain moment, one of the eccentric rotating part 320, the connecting part 330 and the moving part 340 orders about the on-state of the micro switch 360, at the moment, the micro switch 360 sends stop information to the control part, thereby, under the control action of the control part, the driving part 310 stops working, at the moment, the moving part 340 retracts to the initial position, namely, the end part of the moving part 340 used for pushing the door body retracts into the machine body, so that the subsequent door body can continue to cover the machine body, and therefore, the process of opening the door is completed through the automatic door opening mechanism 300.

To sum up, through eccentric rotating member 320, the cooperation of connecting piece 330 and moving member 340 is used, cooperate eccentric rotating member 320 and connecting piece 330, eccentric rotating member 320 converts the rotary motion mode of whole circle into the rotation of the certain angle of connecting piece 330, rethread connecting piece 330 converts the rotation mode of certain angle into the moving mode of moving member 340, thereby, the direct drive mode with the push rod contact of cam among the prior art has been changed, greatly reduced the wearing and tearing between two contact part of cam and push rod, and then improved the life of spare part in the automatic mechanism 300 of opening the door, the long-time normal operating of automatic mechanism 300 of opening the door has been guaranteed.

And, through the cooperation use of micro-gap switch 360 and control piece, can open the back at the door body along with the successive action of driving piece 310, eccentric rotating member 320 and connecting piece 330, make moving piece 340 return to initial condition and stop moving to follow-up cover the door body on the organism once more, thereby compare in prior art and adopt the spacing mode of mechanical structure, improved the feedback precision, and then guaranteed the operation precision of automatic mechanism 300 of opening a door.

As a preferred embodiment, the eccentric rotary member 320 in this embodiment is a cam, the connecting member 330 is a connecting rod, and the moving member 340 is a push rod, and the specific structure and operation principle of the automatic door opening mechanism 300 will be described in various ways:

in the first mode, the middle of the connecting rod is hinged to the machine body through a rotating shaft 370, the cam and the push rod are respectively located on two sides of the rotating shaft 370 and can be correspondingly connected with two ends of the connecting rod respectively, preferably, as shown in fig. 1 and fig. 2, the left side in fig. 1 is left, the right side in fig. 1 is right, the upper side is upper, the lower side is lower, specifically, the outer contour of the cam is abutted to the upper side face of the right end of the connecting rod, the lower end of the push rod is hinged to the left end of the connecting rod, and the cam and the push rod are located on the same side of the connecting rod and are both upper sides of the. Therefore, along with the rotation of the cam, the right end part of the connecting rod is pressed downwards by the cam to deflect clockwise, and the left end part of the connecting rod can upwards push the push rod to move towards the door body, so that the door body can be pushed away. In order to enable the push rod to return under various conditions (the door body is arranged on the side or the top of the machine body, etc.), a return part 350 is additionally arranged in the embodiment, preferably, the return part 350 can be arranged between the connecting rod and the machine body, can also be arranged between the push rod and the machine body, and can also be arranged at the hinged position of the connecting rod and the push rod.

In other embodiments, as shown in fig. 4, the upper part in fig. 4 is the upper part, the lower part is the lower part, the left part is the left part, and the right part is the right part, specifically, the outer contour of the cam can be abutted with the upper side surface of the right end part of the connecting rod, the lower end part of the push rod can be abutted with the upper side surface of the left end part of the connecting rod, and the cam and the push rod are positioned on the same side of the connecting rod and are both the upper side of the connecting rod, at this time. This type is different from the first type in that the lower end of the push rod is instead in contact with the upper side surface of the left end of the connecting rod, so that the degree of freedom between the push rod and the connecting rod is increased, and the rotation of the connecting rod and the linear motion of the push rod are ensured not to interfere with each other. Meanwhile, in order to ensure that the push rod can return, the return piece 350 is arranged between the push rod and the machine body, so that the push rod can be directly driven into the machine body.

In the second way, the middle part of the connecting rod is hinged to the machine body through a rotating shaft 370, the cam and the push rod are respectively located at two sides of the rotating shaft 370 and can be respectively and correspondingly connected with two end parts of the connecting rod, preferably, as shown in fig. 3, the left part in fig. 3 is the left part, the right part is the right part, the upper part is the upper part, and the lower part is the lower part, specifically, the cam is provided with a track groove 321 along the side surface of the axial direction of the cam, the right end part of the connecting rod is provided with a connecting column 331 (considering the relative friction between the connecting column 331 and the track groove 321, preferably, the outer surface of the connecting column 331 is provided with a roller or a bearing to replace the sliding friction through the rolling friction and reduce the abrasion), the connecting column 331 is installed in the track groove. Therefore, along with the rotation of the cam, the connecting column 331 can move in the track groove 321 relative to the track groove 321, so that the connecting rod can be driven by the cam to rotate relative to the machine body, and the left end part of the connecting rod can push the push rod to move towards the door body direction, so that the door body is pushed open. It should be noted here that, because the connection column 331 is limited in the track groove 321, when the cam rotates, the swinging of the connection rod can be realized through the matching of the track groove 321 and the connection column 331, and the return of the push rod can also be realized without separately arranging the return piece 350; of course, the return member 350 is not provided to affect the return of the push rod, but the return member 350 is not limited to be used.

In other embodiments, as shown in fig. 5, the left side in fig. 5 is left, the right side is right, the upper side is upper, and the lower side is lower, specifically, the cam is engaged with the right end of the connecting rod through the track groove 321 and the connecting column 331, and the lower end of the push rod can be abutted against the upper side surface of the left end of the connecting rod, and at this time, the connecting rod also plays a role of lever. This type is different from the second type in that the lower end of the push rod is instead in contact with the upper side surface of the left end of the connecting rod, so that the degree of freedom between the push rod and the connecting rod is increased, and the rotation of the connecting rod and the linear motion of the push rod are ensured not to interfere with each other. Meanwhile, in order to ensure that the push rod can return smoothly, the return piece 350 is arranged between the push rod and the machine body, so that the push rod can be directly driven into the machine body.

In a third mode, one end of the connecting rod is hinged to the machine body through a rotating shaft 370, the cam and the push rod are located on the same side of the rotating shaft 370 and can be correspondingly connected with the connecting rod respectively, preferably, as shown in fig. 6, the left side in fig. 6 is the left side, the right side is the right side, the upper side is the upper side, and the lower side is the lower side, specifically, the outer contour of the cam is abutted to the lower side surface of the middle of the connecting rod, the lower end of the push rod is hinged to the left end of the connecting rod, and the cam and the push rod. Therefore, with the rotation of the cam, the middle part of the connecting rod is pressed upwards by the cam to enable the connecting rod to deflect clockwise, and the left end of the connecting rod can upwards push the push rod to move towards the door body so as to push the door body open. In order to enable the push rod to return under various conditions (the door body is arranged on the side or the top of the machine body, etc.), a return part 350 is additionally arranged in the embodiment, preferably, the return part 350 can be arranged between the connecting rod and the machine body, can also be arranged between the push rod and the machine body, and can also be arranged at the hinged position of the connecting rod and the push rod.

In other embodiments, as shown in fig. 8, taking the left side in fig. 8 as the left side, the right side as the right side, the upper side as the upper side, and the lower side as the lower side, specifically, the outer contour of the cam can abut against the lower side of the middle portion of the connecting rod, the lower end of the push rod can abut against the upper side of the left end of the connecting rod, and the cam and the push rod are located on the two opposite sides of the connecting rod. The difference between this mode and the third mode is that instead the lower end of the push rod abuts against the upper side of the left end of the connecting rod, thereby increasing the degree of freedom between the push rod and the connecting rod and ensuring that the rotation of the connecting rod does not interfere with the linear motion of the push rod. Meanwhile, in order to ensure that the push rod can return, the return piece 350 is arranged between the push rod and the machine body, so that the push rod can be directly driven into the machine body.

In a fourth mode, one end of the connecting rod is hinged to the machine body through a rotating shaft 370, the cam and the push rod are located on the same side of the rotating shaft 370 and can be correspondingly connected with the side of the connecting rod, preferably, as shown in fig. 7, the left side in fig. 7 is the left side, the right side is the right side, the upper side is the upper side, and the lower side is the lower side, specifically, the cam is provided with a track groove 321 along the side of its own axial direction, and the middle of the connecting rod is provided with a connecting column 331 (considering the relative friction between the connecting column 331 and the track groove 321, preferably, the outer surface of the connecting column 331 is provided with a roller or a bearing to replace the sliding friction by the rolling friction to reduce the wear), the connecting column 331 is installed in the track groove 321 in a matching. Therefore, along with the rotation of the cam, the connecting column 331 can move in the track groove 321 relative to the track groove 321, so that the connecting rod can be driven by the cam to rotate relative to the machine body, and the left end part of the connecting rod can push the push rod to move towards the door body direction, so that the door body is pushed open. It should be noted here that, because the connection column 331 is limited in the track groove 321, when the cam rotates, the swinging of the connection rod can be realized through the matching of the track groove 321 and the connection column 331, and the return of the push rod can also be realized without separately arranging the return piece 350; of course, the return member 350 is not provided to affect the return of the push rod, but the return member 350 is not limited to be used.

In other embodiments, as shown in fig. 9, the left side in fig. 9 is left, the right side is right, the upper side is upper, and the lower side is lower, specifically, the cam is engaged with the middle portion of the connecting rod through the track groove 321 and the connecting column 331, and the lower end of the push rod can abut against the upper side surface of the left end portion of the connecting rod. The difference between this mode and the fourth mode is that instead the lower end of the push rod abuts against the upper side of the left end of the connecting rod, thereby increasing the degree of freedom between the connecting rod and the push rod and ensuring that the rotation of the connecting rod does not interfere with the linear motion of the push rod. Meanwhile, in order to ensure that the push rod can return smoothly, the return piece 350 is arranged between the push rod and the machine body, so that the push rod can be directly driven into the machine body.

As a further preferred embodiment, the return member 350 may be a tension spring or a compression spring, and particularly, when the return member 350 is a tension spring, it needs to be located on two opposite sides of the connecting rod respectively with the push rod, that is, the return member 350 provides a pulling force to make the push rod have a movement tendency away from the door body (retracted into the body), and preferably, the tension spring is connected between the push rod and the body, or between the connecting rod and the body, or at the hinge joint of the push rod and the connecting rod, which way needs to be combined with the actual situation. Similarly, when the return member 350 is a compressed spring, it needs to be located on the same side of the connecting rod as the push rod, that is, the return member 350 provides a pushing force to make the push rod have a movement tendency away from the door body (retracted into the machine body), preferably, the compressed spring is connected between the push rod and the machine body, or between the connecting rod and the machine body, specifically, which way needs to be combined with the actual situation.

It should be noted that in this embodiment, the connecting rod needs to swing around the rotating shaft 370 by a certain angle, that is, each point on the connecting rod makes a circular motion within a certain angle range, and the push rod needs to be close to or far from the door body, that is, each point on the push rod makes a linear motion, so that when the connecting rod and the push rod are hinged, a certain floating space is needed at the hinged position between the connecting rod and the push rod to ensure that no motion interference occurs. Specifically, when one of the two is provided with the pin shaft and the other is provided with the pin shaft hole, a certain gap is required between the pin shaft and the pin shaft hole to ensure that the pin shaft can float in the pin shaft hole by a certain amount and ensure that the connection rod movement and the push rod movement do not interfere. Of course, a certain gap may be provided between the rotation shaft hole on the connecting rod and the rotation shaft 370 on the machine body to ensure that the rotation shaft 370 can float in the rotation shaft hole by a certain amount to ensure that the connecting rod movement and the push rod movement do not interfere with each other. In addition, the matching mode of the pin shaft and the pin shaft hole and the matching mode of the rotating shaft 370 and the rotating shaft hole can be replaced by the matching mode of the shaft and the sliding block, the specific principle is similar to the matching mode of the pin shaft and the pin shaft hole and the matching mode of the rotating shaft 370 and the rotating shaft hole, and detailed explanation is omitted here.

In the present embodiment, a guide groove is provided on one of the push rod and the body, and a guide member is provided on the other of the push rod and the body, so that the push rod can move linearly relative to the body by the cooperation of the guide member and the guide groove. Preferably, the guide member may be a guide post, and the guide groove may be a slotted hole, and of course, the guide member may also be a slide rail of a slide block, and the specific manner is not limited.

As a preferred embodiment, the micro switch 360 in this embodiment is disposed adjacent to the connecting rod, and specifically includes: the microswitch 360 and the push rod are respectively arranged on two sides of the connecting rod, which are opposite to each other, so that the microswitch 360 can be switched on when the push rod retracts and returns, and the microswitch 360 can be switched off when the push rod extends out of the door pushing body.

It should be noted here that the micro switch 360 has a certain idle stroke, that is, the micro switch 360 is turned on after the contact of the micro switch 360 is pressed down for a certain distance, and the micro switch 360 is turned off after the contact is floated for a certain distance. In addition, the specific structure and operation principle of the micro switch 360 can refer to the prior art, and will not be described in detail here.

In other embodiments, the micro switch 360 may also be disposed near the moving member 340 or the eccentric rotating member 320, and the specific principle is similar to the scheme of the micro switch near the connecting member 330, which specifically refers to the scheme of the micro switch near the connecting member 330, and is not described herein again.

The automatic door opening mechanism 300 and the dishwasher having the same provided in this embodiment have the following specific working processes:

after the washing program of the dishwasher is finished, the control member (preferably a main control board, the working principle of which may refer to the prior art and is not described in detail herein) sends a signal for opening the door body (the dishwasher door 100) to the driving member 310 (preferably a motor), the driving member 310 starts to work to drive the eccentric rotary member 320 (preferably a cam) to rotate, the eccentric rotary member 320 pushes the connecting member 330 (preferably a connecting rod) to rotate relative to the dishwasher body, when the eccentric rotary member 320 rotates to its highest point, the connecting member 330 drives the moving member 340 (preferably a push rod) to reach a maximum stroke, that is, the moving member 340 extends to a maximum distance relative to the dishwasher body and pushes the door body open, meanwhile, the connecting member 330 just separates from the contact of the micro switch 360, and during the process from the initial state (the moving member 340 retracts into the dishwasher body) to the state that the door body is pushed open completely (the eccentric, the micro switch 360 switches from the on state to the off state from a certain moment and continues for a period of time, during which the control member does not send a stop instruction to the driving member 310; along with the eccentric solid of revolution continues to rotate, connecting piece 330 begins to extrude the contact, because micro-gap switch 360 has certain idle stroke, make micro-gap switch 360 still be in off-state this moment, moving member 340 then retracts to the organism in this in-process, when moving member 340 completely retracts to the organism (be used for pushing away the tip of the door body and get into the organism in), micro-gap switch 360's idle stroke just has gone away, namely, micro-gap switch 360 switch-on this moment, and send a signal to the control, with through control driving member 310 stop work, thereby moving member 340 then stops retracting, so far accomplish the whole process of opening the door body, so that the door body can follow-up to install on the organism.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an automatic door opening mechanism, is used for realizing at least that the door body opens for the organism, its characterized in that, automatic door opening mechanism (300) includes: the device comprises a driving piece (310), an eccentric rotating piece (320), a connecting piece (330) and a moving piece (340);

the driving part (310) is arranged on the machine body, the eccentric rotating part (320) is connected to the driving part (310), the connecting part (330) is rotatably connected to the machine body, the connecting part (330) can be connected with the eccentric rotating part (320), the moving part (340) is movably connected to the machine body, one end part of the moving part (340) is arranged corresponding to the door body, and the other end part of the moving part (340) can be connected with the connecting part (330); the driving part (310) is configured to drive the eccentric rotating part (320) to rotate, and the door body can be opened through the connecting part (330) and the moving part (340);

the automatic door opening mechanism (300) further comprises a microswitch (360), the microswitch (360) is electrically connected with a control piece of the machine body, the driving piece (310) is electrically connected with the control piece, one of the eccentric rotating piece (320), the connecting piece (330) and the moving piece (340) can drive the microswitch (360) to be switched on or switched off, so that the control piece controls the working state of the driving piece (310) according to the on-off state of the microswitch (360).

2. The automatic door opening mechanism according to claim 1, wherein the eccentric rotary member (320) is a cam, the connecting member (330) is a connecting rod, and the moving member (340) is a push rod;

the driving piece (310) is configured to drive the cam to rotate, and the cam drives the push rod to extend out relative to the machine body through the connecting piece (330) so as to push the door body to be opened through the push rod.

3. The automatic door opening mechanism according to claim 2, wherein the outer contour of the cam is capable of abutting against one end portion of the link at the hinge, the other end portion of the push rod is hinged to the other end portion of the link at the hinge, and the cam and the push rod are located on the same side of the link; the automatic door opening mechanism (300) further comprises a return piece (350) which is used for enabling the push rod to have a movement trend away from the door body;

or the cam is provided with a track groove (321), one end part of the connecting rod at the hinged position is provided with a connecting column (331) which is matched with the track groove (321), and the connecting column (331) can move in the track groove (321); the other end of the push rod is hinged with the other end of the connecting rod at the hinge joint.

4. The automatic door opening mechanism according to claim 1, wherein the eccentric rotary member (320) is a cam, the connecting member (330) is a connecting rod, and the moving member (340) is a push rod;

5. The automatic door opening mechanism according to claim 4, wherein the outer contour of the cam is capable of abutting against the middle of the connecting rod, the other end of the push rod is hinged with one end of the connecting rod away from the hinge, and the cam and the push rod are respectively located on two opposite sides of the connecting rod; the automatic door opening mechanism (300) further comprises a return piece (350) which is used for enabling the push rod to have a movement trend away from the door body;

or the cam is provided with a track groove (321), the middle part of the connecting rod is provided with a connecting column (331) which is matched with the track groove (321), the connecting column (331) can move in the track groove (321), and the other end of the push rod is hinged with one end, far away from the hinged part, of the connecting rod.

6. The automatic door opening mechanism according to claim 3 or 5, characterized in that when the automatic door opening mechanism comprises a return member (350), the return member (350) is a tension spring or a compression spring.

7. The automatic door opening mechanism according to claim 3 or 5, wherein when the push rod is hinged to the connecting rod, a floating space is provided at the hinge joint of the push rod and the connecting rod or the hinge joint of the connecting rod and the body, so that the push rod can be driven to move linearly when the connecting rod rotates.

8. The automatic door opening mechanism according to claim 7, wherein one of the push rod and the body is provided with a guide groove, and the other is provided with a guide member fitted in the guide groove so that the push rod can move linearly toward or away from the door body with respect to the body.

9. The automatic door opening mechanism according to claim 3 or 5, wherein the microswitch (360) is arranged at a position close to the connecting rod, and the microswitch (360) can be switched on when the push rod moves away from the door body, or the microswitch (360) can be switched off when the push rod moves towards the door body.

10. A dishwasher, characterized by comprising an automatic door opening mechanism (300) according to any one of claims 1 to 9;

wherein, the organism is dishwasher housing (200), the door body is dishwasher door (100), dishwasher door (100) set up in one side or top of dishwasher housing (200).