Automatic door opening and closing type dish-washing machine locking device and dish-washing machine

Abstract

The utility model discloses an automatic door opening and closing type dish-washing machine locking device and a dish-washing machine, which comprise a door lock and a latch which are respectively arranged on a box body and a door cover of the dish-washing machine. The door lock is provided with a locking mechanism and a driving mechanism, wherein the locking mechanism can be close to or far away from the clamping jaw to enable the clamping jaw to clamp or release the latch, and the driving mechanism can drive the clamping jaw and the locking mechanism to move outwards together, retract together, move relatively or release the latch, so that the phenomena of bacterial contamination and insect crawl-in caused by the fact that the door cover is normally opened can be effectively avoided. The electric door opening process is attractive and quick, and the manual door opening process is labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, especially to the technical field of locking devices for dishwashers.

Background Art

[0002] In recent years, with the improvement of living standards, dishwashers have gradually become indispensable appliances in the kitchen. After washing the tableware, the dishwasher usually dries the tableware. To achieve the purpose of drying the tableware, the dishwasher needs to turn the humid air in the washing cavity into dry air during the drying stage.

[0003] In the prior art, the dishwasher mainly makes the washing cavity communicate with the outside through a ventilation system, so as to discharge the humid gas in the washing cavity to the outside of the dishwasher, and then replace the internal humid air with the external dry air. However, this method has the problem of high energy consumption. To reduce energy consumption, some manufacturers choose to open the door for drying (after automatically opening the door cover, using the natural convection force to realize the air replacement inside and outside the dishwasher), such as a control method for a dishwasher and the dishwasher disclosed in the invention patent with the publication number of CN114642388A.

[0004] However, the existing dishwashers with an automatic door-opening drying design may cause problems such as bacteria infiltration or bugs crawling in after a long time of opening the door, resulting in the recontamination of the tableware because they cannot automatically close the door after drying. In addition, for such dishwashers, when the user operates the electric door-opening function, the door lock usually needs to first extend the push rod to push open the door cover and then retract the push rod, resulting in problems such as the exposure of the push rod (poor aesthetics) and slow door-opening speed. When the user manually opens the door of such a dishwasher, they often need to overcome a large locking force of the door lock (the door-opening process is relatively difficult).

Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the prior art, and propose a locking device and a dishwasher for an automatic opening and closing type dishwasher, which can effectively avoid the occurrence of bacterial contamination and bug crawling caused by the door cover being always open, the electric door-opening process is beautiful and fast, and the manual door-opening process is labor-saving.

[0006] To achieve the above purpose, the utility model proposes a locking device for an automatic opening and closing type dishwasher, including a door lock and a door bolt. The door lock and the door bolt are respectively installed on the box body and the door cover of the dishwasher. The door lock has a locking mechanism that can make the claw grip or release the door bolt by approaching or moving away from the claw, and a driving mechanism that can drive the claw and the locking mechanism to move outwards together, retract together, move relatively, or release the door bolt.

[0007] Preferably, when the door bolt is not gripped by the claw, the door cover can open itself by gravity or an auxiliary door-opening force.

[0008] Preferably, the locking mechanism includes a locking plate and a driving plate. The locking plate and the driving plate can be clamped through a clamping structure or elastically connected through a connecting plate spring, and the connecting plate spring can also be installed between the locking plate and the push rod.

[0009] Preferably, the locking plate can contact the claw and provide a clamping force. When the driving plate drives the locking plate to disengage from the claw, the locking plate can cancel the clamping force on the claw.

[0010] Preferably, the outer shell of the door lock is provided with an opening. The claw, the locking plate, and the driving plate are arranged in sequence from outside to inside along the opening. The claw is hinged on the push rod, the locking plate and the driving plate are respectively slidably connected to the push rod, and the driving plate is directly driven electrically by a driving mechanism.

[0011] Preferably, the claw is composed of a pair of clamping fingers. The inner ends of the two clamping fingers are respectively provided with guiding inclined surfaces, and the distance between the two guiding inclined surfaces gradually decreases from inside to outside. The outer end of the locking plate is provided with an outwardly convex guiding arc surface, and the guiding arc surface and the two guiding inclined surfaces together form a clamping structure.

[0012] Preferably, the outer ends of the two clamping fingers are respectively provided with relatively bent clamping hook portions. The bolt has a diamond-shaped bolt tongue, and the tip of the bolt tongue faces the gap between the two clamping hook portions.

[0013] Preferably, a return spring is further installed at the inner end of the driving plate. A pull rod for electrically pulling the locking plate is further provided on the driving plate. The adjacent surfaces of the locking plate and the driving plate are respectively provided with first blind holes and second blind holes for inserting the connecting plate spring, and the inner end of the driving plate is further provided with a third blind hole for inserting the return spring.

[0014] Preferably, the driving mechanism includes a motor, a worm, a turbine, and a transmission gear. The worm is coaxially fixed at the output shaft of the motor. The turbine and several transmission gears are respectively rotatably connected to the outer shell through rotating shafts. Each transmission gear is arranged in sequence and meshes between the driving plate and the turbine. The turbine meshes with the worm and one of the transmission gears at the same time, and the driving plate meshes with another transmission gear.

[0015] A dishwasher is equipped with the automatic switch door type dishwasher locking device as described above.

[0016] The beneficial effects of the present utility model:

[0017] 1) By installing a door lock with a claw, a locking mechanism, and a driving mechanism on the box body, the utility model can, on the one hand, use the driving mechanism to drive the claw to move relatively closer to or relatively away from the locking mechanism to make the claw grip or release the bolt, thereby realizing the locking or unlocking between the box body and the door cover. On the other hand, it can also use the driving mechanism to drive the claw and the locking mechanism to move outward or retract together when they are engaged, so that the dishwasher can automatically close the door again after the opening and drying process ends, effectively avoiding the occurrence of bacterial contamination and bugs crawling in caused by the door cover being always open;

[0018] 2) When the user activates the electric door opening function, the utility model can make the claw release the holding force, so that the door cover automatically tilts outward and opens under the action of its own weight or the auxiliary door opening force. During the entire electric door opening operation, on the one hand, the user will not see components such as the claw protruding (good working aesthetics), and on the other hand, since the elongation time and recovery time of components such as the claw are saved, the electric door opening operation speed can be effectively improved;

[0019] 3) For the utility model, after automatic door opening, the user does not need to overcome the operating force of the door lock when manually opening the door, and the door opening is very labor-saving.

[0020] The features and advantages of the utility model will be described in detail through embodiments in conjunction with the drawings.

Description of the Drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the dishwasher in the door-locked state;

[0022] Figure 2 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher when the dishwasher is in the door-locked state;

[0023] Figure 3 is a three-dimensional structural schematic diagram of the dishwasher in the electric door-opening and air-permeating state;

[0024] Figure 4 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher when the dishwasher is in the electric door-opening and air-permeating state;

[0025] Figure 5 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher when the dishwasher is manually closed;

[0026] Figure 6 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher when the dishwasher is manually opened;

[0027] Figure 7 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher after the dishwasher is manually opened;

[0028] Figure 8 is a three-dimensional structural schematic diagram of the dishwasher when it is in the electric unlocking state;

[0029] Figure 9 is an internal working schematic diagram of the locking device of the automatic door-opening and closing type dishwasher when the dishwasher is electrically opened.

[0030] In the figure: 1 - door lock, 11 - outer shell, 111 - opening, 12 - claw, 121 - guiding inclined surface, 122 - clamping hook part, 13 - locking mechanism, 131 - locking plate, 1311 - guiding arc surface, 1312 - first blind hole, 132 - driving plate, 1321 - second blind hole, 1322 - third blind hole, 133 - connecting plate spring, 134 - return spring, 135 - pull rod, 14 - driving mechanism, 141 - motor, 142 - worm, 143 - turbine, 144 - transmission gear, 15 - push rod, 2 - bolt, 21 - door tongue, 3 - box body, 4 - door cover.

Detailed implementation manners

[0031] Refer to Figures 1 to 9 , the locking device of the automatic door-opening and closing type dishwasher of the present utility model includes a door lock 1 and a bolt 2. The door lock 1 and the bolt 2 are respectively installed on the box body 3 and the door cover 4 of the dishwasher. The door lock 1 has a locking mechanism 13 that can make the claw 12 grip or release the bolt 2 by approaching or moving away from the claw 12, and a driving mechanism 14 that can drive the claw 12 and the locking mechanism 13 to move outwards together, retract together, move relatively, or release the bolt 2.

[0032] When the bolt 2 is not gripped by the claw 12, the door cover 4 can open itself by gravity or auxiliary door-opening force.

[0033] The locking mechanism 13 includes a locking plate 131 and a driving plate 132. The locking plate 131 and the driving plate 132 can be snap-connected through a snap-fit structure or elastically connected through a connecting plate spring 133. The connecting plate spring 133 can also be installed between the locking plate 131 and the push rod 15.

[0034] The locking plate 131 can contact the claw 12 and provide a gripping force. When the driving plate 132 drives the locking plate 131 to disengage from the claw 12, the locking plate 131 can cancel the gripping force on the claw 12.

[0035] An opening 111 is provided on the outer shell 11 of the door lock 1. The claw 12, the locking plate 131, and the driving plate 132 are arranged in sequence from outside to inside along the opening 111. The claw 12 is hinged on the push rod 15. The locking plate 131 and the driving plate 132 are respectively slidably connected to the push rod 15. The driving plate 132 is directly electrically driven by the driving mechanism 14.

[0036] The jaw 12 is composed of a pair of fingers. The inner ends of the two fingers are respectively provided with guiding inclined surfaces 121. The distance between the two guiding inclined surfaces 121 gradually decreases from the inside to the outside. The outer end of the locking plate 131 is provided with a convex guiding arc surface 1311. The guiding arc surface 1311 and the two guiding inclined surfaces 121 together form a locking structure.

[0037] The outer ends of the two fingers are respectively provided with relatively bent hook portions 122. The bolt 2 has a rhombic bolt tongue 21. The tip of the bolt tongue 21 faces the gap between the two hook portions 122.

[0038] A return spring 134 is further installed at the inner end of the driving plate 132. A pull rod 135 for electrically pulling the locking plate 131 is further provided on the driving plate 132. First blind holes 1312 and second blind holes 1321 for inserting the link plate spring 133 are respectively provided on the adjacent surfaces of the locking plate 131 and the driving plate 132. A third blind hole 1322 for inserting the return spring 134 is further provided at the inner end of the driving plate 132.

[0039] The driving mechanism 14 includes a motor 141, a worm 142, a turbine 143 and a transmission gear 144. The worm 142 is coaxially fixed at the output shaft of the motor 141. The turbine 143 and several transmission gears 144 are respectively rotatably connected to the housing 11 through rotating shafts. The transmission gears 144 are sequentially arranged and meshed between the driving plate 132 and the turbine 143. The turbine 143 is simultaneously meshed with the worm 142 and one of the transmission gears 144. The driving plate 132 is meshed with another transmission gear 144.

[0040] A dishwasher is equipped with the automatic switch door type dishwasher locking device as described above.

[0041] The working process of the present utility model:

[0042] When the door cover 4 closes the cleaning chamber of the cabinet 3, if it is necessary to adjust the dishwasher to the door-locking state, the driving mechanism 14 can be used to drive the locking mechanism 13 to move outwards. As Figure 1 and Figure 2 shown, at this time, the locking plate 13 forces the inner ends of the two fingers of the jaw 12 to move away from each other through the guiding arc surface 1311 and the two guiding inclined surfaces 121. At the same time, using the lever principle, the outer ends of the two fingers of the jaw 12 move closer to each other (the bolt tongue 21 can be clamped by the two hook portions 122), so as to realize the locking between the cabinet 3 and the door cover 4. That is to say, the locking force of the locking plate 13 can make the jaw 12 hold the bolt tongue 21 tightly (prevent the bolt tongue 21 from coming out), ensuring that the door cover 4 is in the closed state.

[0043] When the dishwasher needs to open the door for ventilation, the driving mechanism 14 drives the claw 12 and the locking plate 13 to move outward together while maintaining the engaged state (from Figure 2 → Figure 4 ). At this time, the door cover 4 is opened relative to the cabinet 3 by a specified angle (refer to Figure 3 ), so that the internal water vapor of the dishwasher can be discharged smoothly. After the ventilation of the dishwasher is completed, the driving mechanism 14 drives the claw 12 and the locking plate 13 to retract together while maintaining the engaged state (from Figure 4 → Figure 2 ).

[0044] The user can manually open and close the door of the dishwasher. Specifically, when closing the door manually, as shown in Figure 5 , the door tongue 21 can push open the claw 12, so that the claw 12 drives the locking plate 131 to overcome the elastic force of the connecting plate spring 133 (as shown in Figure 2 after closing the door); when opening the door manually, as shown in Figure 6 , the door tongue 21 can push open the claw 12, so that the claw 12 drives the locking plate 131 to overcome the elastic force of the connecting plate spring 133 (as shown in Figure 7 after opening the door).

[0045] When the door cover 4 closes the cleaning chamber of the cabinet 3, if the dishwasher needs to open the door automatically, as shown in Figure 9 , the driving mechanism 14 can be used to drive the locking mechanism 13 to move inward. At this time, the push rod contacts the housing and keeps the push rod (the displacement of the claw and the push rod is fixed) stationary. The driving plate 132 continues to move inward under the driving action of the driving mechanism 14 against the elastic force of the return spring 134. The locking plate 131 will move inward synchronously under the pulling action of the driving plate 132, so that the locking plate 131 is disengaged from the claw 12 (since the claw 12 is not stressed, the door tongue 21 can freely disengage from the claw 12), thus completing the automatic door opening action (refer to Figure 8 ).

[0046] In addition, during the electric door opening operation, the pull rod 135 can also realize the unhooking and door opening by electrically pulling down the locking plate 131.

[0047] The above embodiments are illustrative of the present invention and not restrictive thereof. Any solution obtained by simply changing the present invention falls within the protection scope of the present invention.

Claims

1. Automatic door-opening and closing type dishwasher locking device, including a door lock (1) and a door bolt (2), the door lock (1) and the door bolt (2) are respectively installed on the cabinet (3) and the door cover (4) of the dishwasher, and it is characterized in that: The door lock (1) has a locking mechanism (13) that can cause the pawl (12) to grip or release the bolt (2) by approaching or moving away from the pawl (12), and a driving mechanism (14) that can drive the pawl (12) and the locking mechanism (13) to move outwards together, retract together, move relative to each other, or release the bolt (2).

2. The automatic door-opening and closing type dishwasher locking device according to claim 1, wherein: When the bolt (2) is not gripped by the pawl (12), the door cover (4) can open the door by its own weight or an auxiliary opening force.

3. The automatic door-opening and closing type dishwasher locking device according to claim 1, characterized in that: The locking mechanism (13) includes a locking plate (131) and a driving plate (132). The locking plate (131) and the driving plate (132) can be connected by a clamping structure or elastically connected by a connecting plate spring (133). The connecting plate spring (133) can also be installed between the locking plate (131) and the push rod (15).

4. The automatic door-opening and closing type dishwasher locking device according to claim 3, characterized in that: The locking plate (131) can contact the pawl (12) and provide a gripping force. When the driving plate (132) drives the locking plate (131) away from the pawl (12), the locking plate (131) can cancel the gripping force on the pawl (12).

5. The automatic door-opening and closing type dishwasher locking device according to claim 4, characterized in that: An opening (111) is provided on the outer shell (11) of the door lock (1). The pawl (12), the locking plate (131), and the driving plate (132) are arranged in sequence from outside to inside along the opening (111). The pawl (12) is hinged on the push rod (15). The locking plate (131) and the driving plate (132) are respectively slidably connected to the push rod (15). The driving plate (132) is directly driven electrically by the driving mechanism (14).

6. The automatic door-opening and closing type dishwasher locking device according to claim 5, wherein: The pawl (12) is composed of a pair of clamping fingers. Guide inclined surfaces (121) are respectively provided at the inner ends of the two clamping fingers. The distance between the two guide inclined surfaces (121) gradually decreases from inside to outside. The outer end of the locking plate (131) is provided with a convex guide arc surface (1311). The guide arc surface (1311) and the two guide inclined surfaces (121) together form a clamping structure.

7. The automatic door-opening and closing type dishwasher locking device according to claim 6, characterized in that: Relatively bent clamping hook portions (122) are respectively provided at the outer ends of the two clamping fingers. The bolt (2) has a rhombic door tongue (21). The tip of the door tongue (21) faces the gap between the two clamping hook portions (122).

8. The automatic door-opening and closing type dishwasher locking device according to claim 5, characterized in that: A return spring (134) is further installed at the inner end of the driving plate (132). A pull rod (135) that can electrically pull the locking plate (131) is further provided on the driving plate (132). First blind holes (1312) and second blind holes (1321) for inserting the connecting plate spring (133) are respectively provided on the adjacent surfaces of the locking plate (131) and the driving plate (132). A third blind hole (1322) for inserting the return spring (134) is further provided at the inner end of the driving plate (132).

9. The automatic door-opening and closing type dishwasher locking device according to claim 5, wherein: The driving mechanism (14) includes a motor (141), a worm (142), a turbine (143) and transmission gears (144). The worm (142) is coaxially fixed to the output shaft of the motor (141). The turbine (143) and several transmission gears (144) are respectively rotatably connected to the housing (11) through rotating shafts. Each of the transmission gears (144) is arranged in sequence and meshes between the driving plate (132) and the turbine (143). The turbine (143) meshes with the worm (142) and one of the transmission gears (144) at the same time. The driving plate (132) meshes with another transmission gear (144).

10. Dishwasher, characterized in that: An automatic switch door type dishwasher locking device as claimed in any one of claims 1 to 9 is installed.

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