A dishwasher door ejection device with a gate

Abstract

A kind of door body ejection device of dish-washing machine with gate, and the door body ejection device includes driver, swing bar, sleeve, top rod, first elastic element, second elastic element, detection switch and shell, driver drives the first end of swing bar, the tail end of swing bar is in abutment with sleeve, sleeve is sleeved on top rod, first elastic element is arranged between sleeve and shell, second elastic element is arranged between sleeve and top rod.The present application is by being provided with driver, swing bar, sleeve, top rod, first elastic element, second elastic element and detection switch, top rod, sleeve, first elastic element and second elastic element form two sections of top rod travel, first elastic element travel satisfies drying stage when washing program, driver works through swing bar and pushes top rod and opens door body, for inner container exhaust, after drying stage ends, driver is powered off and resets, first elastic element presses top rod and makes it reset, second elastic element travel satisfies when opening door top rod triggers or separates detection switch, for strong electric washing pump and is connected or disconnected power supply.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, and in particular to a door ejection device for a dishwasher with gate control. Background Technology

[0002] Chinese Patent Document No. CN219089182U, published on May 30, 2023, discloses a dishwasher door opening and closing device. The dishwasher includes an inner tub and a door that opens and closes at the front end of the inner tub. The door opening and closing device is located on the top of the inner tub and includes a driver, a transmission assembly, a door latch, and a control device. The driver drives and connects to the transmission assembly, which is connected to the door latch. The door has a door lock assembly that engages with the door latch. The control device is communicatively connected to the driver and includes a sensing component to detect whether the door latch is in its initial or extended state. When the door opening and closing device is in operation, the driver drives the door latch forward or backward through the transmission assembly, thereby causing the door to open or close semi-automatically. However, when the door is opened, hot water may spray out from the inner tub while the dishwasher is still running, posing a potential safety hazard and the risk of scalding the user.

[0003] Therefore, further improvements are necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a dishwasher door ejection device with door control that is simple in structure, safe and reliable, stable in operation, provides a good user experience, and is highly practical, so as to overcome the shortcomings of the prior art.

[0005] A door ejection device for a dishwasher with door control is designed for this purpose. The dishwasher includes a door body. The door ejection device includes a driver, a rocker arm, a sleeve, a push rod, a first elastic element, a second elastic element, a detection switch, and a housing. The driver drives the first end of the rocker arm, the tail end of the rocker arm abuts against the sleeve, the sleeve is fitted onto the push rod, the first elastic element is disposed between the sleeve and the housing, and the second elastic element is disposed between the sleeve and the push rod. When the door closes, the push rod retracts backward, so that the push rod acts on the detection switch, thereby connecting the power supply, and the second elastic element is compressed to store energy; When the driver drives the swing arm to swing forward, the swing arm pushes the sleeve and the push rod forward, thereby pushing the door to open, and the push rod disengages from the detection switch to disconnect the power supply, and the first elastic element is compressed to store energy; When the door is opened by external force, the push rod extends forward under the elastic force of the second elastic element and disengages from the detection switch to disconnect the power supply.

[0006] The sleeve has a notch, the push rod has a protrusion, the protrusion is movably mounted on the notch, and a push part is provided behind the notch; When the door push rod retracts backward, the protrusion moves backward on the notch and stops at the push part; When the lever swings forward, it pushes the sleeve forward, so that the sleeve acts on the protrusion through the pushing part, thereby pushing the push rod forward. When the push rod extends forward under the elastic force of the second elastic element, the protrusion moves forward on the notch.

[0007] The first end of the first elastic element abuts against the sleeve and is close to the notch, and the tail end of the first elastic element abuts against the inner wall of the outer shell. When the push rod is in the ejected state and the driver is de-energized, the sleeve is reset backward under the elastic force of the first elastic element, and when the sleeve is reset, the first elastic element acts on the protrusion to reset the push rod backward.

[0008] The rocker arm is provided with a limiting protrusion, the first end of the second elastic element abuts against the inner side wall of the sleeve, and the tail end of the second elastic element abuts against the limiting protrusion. When the door push rod retracts backward, the limiting protrusion compresses the second elastic element backward. When the door is opened under external force, the elastic force of the second elastic element acts on the limiting protrusion to push the push rod forward.

[0009] The end of the swing arm is provided with a first abutting part, which abuts against the sleeve. The first abutting part is provided with a clearance opening, through which the push rod passes.

[0010] A rotating part is provided between the swing arm and the outer shell. The swing arm is rotatably mounted on the outer shell through the rotating part. The rotating part is close to the head end of the swing arm and far away from the tail end of the swing arm.

[0011] The outer shell is provided with a guide groove, and the sleeve is provided with a guide rib. The guide rib is reciprocally slidably arranged on the guide groove.

[0012] The outer casing is provided with a guide hole, and the push rod passes through the guide hole and moves back and forth along the guide hole.

[0013] The driver is equipped with a telescopic rod, and the first end of the swing arm is equipped with a second abutment part, which abuts the telescopic rod. When the driver is powered on, the telescopic rod extends and pushes the second abutment part to make the swing arm swing forward. When the driver is powered off, the telescopic rod retracts, the sleeve returns to its original position and pushes the first abutment part to make the swing arm swing backward to its original position.

[0014] The housing has a first mounting groove, and the detection switch is mounted on the first mounting groove. The side of the housing has a through hole corresponding to the position of the first mounting groove. The through hole connects to the first mounting groove, and the first terminal of the detection switch extends out of the housing through the through hole.

[0015] The dishwasher door ejection device of the present invention comprises a driver, a swing arm, a sleeve, a ejector rod, a first elastic element, a second elastic element, and a detection switch. The ejector rod, sleeve, first elastic element, and second elastic element form two ejector rod strokes. When the first elastic element stroke meets the drying stage of the washing program, the driver operates to push the ejector rod open the door through the swing arm to vent the inner tub. After the drying stage ends, the driver is de-energized and resets, and the first elastic element presses against the ejector rod to reset it. When the second elastic element stroke meets the opening and closing stage, the ejector rod triggers or disengages from the detection switch, which connects or disconnects the power supply to the high-voltage washing pump. This disconnects the power when the door is opened to prevent hot water from spraying out of the inner tub and scalding the user, thus improving safety. When the door is closed, the power is restored so that the device continues to operate. Attached Figure Description

[0016] Figure 1 This is a partial structural diagram of the ejection device during the retraction of the push rod in one embodiment of the present invention.

[0017] Figure 2 This is a partial structural diagram of the ejection device when the ejector rod extends in one embodiment of the present invention.

[0018] Figure 3 This is a partial structural diagram of the ejection device when the ejector rod is ejected in one embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the ejector device when the ejector rod extends in one embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the overall structure of the top rod in one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall structure of the sleeve in one embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the overall structure of the pendulum rod in one embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the overall structure of the ejection device in one embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the overall structure of the lower shell in one embodiment of the present invention.

[0025] Figure 10 This is an exploded structural diagram of the ejection device in one embodiment of the present invention.

[0026] Figure 11 This is a partial structural diagram of a dishwasher according to an embodiment of the present invention.

[0027] Figure 12 This is a partial structural diagram of the dishwasher from another position in one embodiment of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See Figures 1-12 This dishwasher with door control door ejection device includes a door 9 and a door ejection device including a driver 1, a rocker arm 2, a sleeve 3, a push rod 4, a first elastic element 5, a second elastic element 6, a detection switch 7 and a housing 8. The driver 1 drives the first end of the rocker arm 2, and the tail end of the rocker arm 2 abuts against the sleeve 3. The sleeve 3 is fitted onto the push rod 4. The first elastic element 5 is disposed between the sleeve 3 and the housing 8, and the second elastic element 6 is disposed between the sleeve 3 and the push rod 4. like Figure 1 As shown, when the door 9 is closed, the push rod 4 is pushed back to retract, so that the push rod 4 acts on the detection switch 7, thereby connecting the power supply, and the second elastic element 6 is compressed to store energy. like Figure 3 As shown, when the driver 1 drives the swing arm 2 to swing forward, the swing arm 2 pushes the sleeve 3 and the push rod 4 forward, thereby pushing the door 9 to open, and the push rod 4 disengages from the detection switch 7 to disconnect the power supply, and the first elastic element 5 is compressed to store energy. like Figure 2 As shown, when the door 9 is opened under external force (door 9 is opened manually), the top rod 4 extends forward under the elastic force of the second elastic element 6 and disengages from the detection switch 7 to disconnect the power supply.

[0030] The push rod 4, sleeve 3, first elastic element 5, and second elastic element 6 form two strokes of the push rod 4. When the first elastic element 5 is in the drying stage of the washing program, the driver 1 works to push the push rod 4 to open the door 9 through the swing rod 2, so as to exhaust the air from the inner tank 36. After the drying stage is over, the driver 1 is de-energized and resets, and the first elastic element 5 presses the push rod 4 to reset it. When the second elastic element 6 is in the opening and closing stage, the push rod 4 triggers or disengages from the detection switch 7, so as to connect or disconnect the power supply to the high-voltage washing pump 38, so that it is de-energized when the door is open to prevent hot water from spraying out of the inner tank 36 and scalding the user, thereby improving the safety of use. When the door is closed, it is energized again to continue working. In addition to the above functions, the stroke of the second elastic element 6 can also be used as a door opening and closing signal source to determine the opening and closing status of the door 9 in the electronic control.

[0031] The sleeve 3 has a notch 10 at the front end, the push rod 4 has a protrusion 11, the protrusion 11 is movably mounted on the notch 10, and the notch 10 has a push part 24 at the rear side; When the door body 9 pushes the top rod 4 to retract backward, the protrusion 11 moves backward on the notch 10 and stops at the pushing part 24; When the swing rod 2 swings forward, it pushes the sleeve 3 forward, so that the sleeve 3 acts on the protrusion 11 through the pushing part 24, thereby pushing the push rod 4 forward. When the push rod 4 extends forward under the elastic force of the second elastic member 6, the protrusion 11 moves forward on the notch 10 and moves to the front end of the notch 10. At this time, the protrusion 11 abuts against the rear end of the first elastic member 5. The notch 10 and the protrusion 11 work together to allow the sleeve 3 and the push rod 4 to move back and forth relative to each other, thereby enabling the push rod 4 to trigger or disengage from the detection switch 7.

[0032] Notches 10 are respectively provided on the upper and lower sides of the sleeve 3, and protrusions 11 are respectively provided on the upper and lower sides of the push rod 4.

[0033] The rear end of the first elastic element 5 abuts against the front end face of the sleeve 3 and is close to the notch 10. The front end of the first elastic element 5 abuts against the inner side wall of the outer shell 8. The first elastic element 5 is sleeved on the top rod 4. The first elastic element 5 is a spring. When the push rod 4 is in the ejected state and the driver 1 is de-energized, the sleeve 3 returns to its original position under the elastic force of the first elastic element 5. When the sleeve 3 returns to its original position, the first elastic element 5 acts on the protrusion 11 to make the push rod 4 return to its original position. When the sleeve 3 begins to return to its original position, since the protrusion 11 is behind the notch 10, the first elastic element 5 does not act on the push rod 4 at this time, so the push rod 4 will not move backward. During this stage, the protrusion 11 moves forward relative to the notch 10, that is, the push rod 4 moves forward relative to the sleeve 3. When the protrusion 11 moves to the front end of the notch 10, the first elastic element 5 acts on the protrusion 11 to make the push rod 4 return to its original position. After the push rod 4 returns to its original position, it will not act on the detection switch 7.

[0034] The rocker arm 2 is provided with a limiting protrusion 12, the rear end of the second elastic member 6 abuts against the inner side wall of the sleeve 3, the front end of the second elastic member 6 abuts against the limiting protrusion 12, and the second elastic member 6 is a spring. When the door body 9 pushes the top rod 4 to retract backward, the limiting protrusion 12 compresses the second elastic element 6 backward; When the door 9 is opened under the action of external force, the second elastic element 6 acts on the limiting protrusion 12 to push the top rod 4 forward.

[0035] Under the same deformation, the elastic force of the first elastic element 5 is greater than that of the second elastic element 6.

[0036] The sleeve 3 is provided with a receiving cavity 25, and the second elastic element 6 is provided in the receiving cavity 25. The second elastic element 6 is sleeved on the top rod 4, making the overall structure of the door ejection device A more compact.

[0037] The protrusions 11 are respectively provided on the upper and lower sides of the limiting protrusion 12.

[0038] The tail end of the swing arm 2 is provided with a first abutting part 13, which abuts against the rear end face of the sleeve 3. The first abutting part 13 is provided with a clearance opening 14, through which the push rod 4 passes, making the overall structure of the door ejection device A more compact. When the swing arm 2 swings forward, the first abutting part 13 pushes the sleeve 3 forward.

[0039] A rotating part 15 (i.e., a rotation fulcrum) is provided between the rocker arm 2 and the outer casing 8. The rocker arm 2 is rotatably mounted on the outer casing 8 through the rotating part 15. The rotating part 15 is close to the head end of the rocker arm 2 and far away from the tail end of the rocker arm 2. A shorter lever arm is formed between the rotating part 15 and the head end of the rocker arm 2, and a longer lever arm is formed between the rotating part 15 and the tail end of the rocker arm 2. The longer lever arm ensures that the first elastic element 5 can accurately reset the sleeve 3, the rocker arm 2 and the push rod 4 without any misalignment. Since the actuator 1 itself has a large thrust, a shorter lever arm can be used.

[0040] The rotating part 15 includes a rotating hole 26 provided on the rocker arm 2 and a rotating shaft 27 provided on the outer casing 8, and the rotating shaft 27 is rotatably connected to the rotating hole 26.

[0041] The outer shell 8 is provided with a guide groove 16, and the sleeve 3 is provided with a guide rib 17. The guide rib 17 is slidably arranged on the guide groove 16 to ensure that the sleeve 3 does not shift left or right when it moves back and forth.

[0042] A guide hole 18 is provided on the front side of the outer casing 8. The push rod 4 passes through the guide hole 18 and moves back and forth along the guide hole 18 to ensure that the push rod 4 does not shift left or right when it moves back and forth.

[0043] The driver 1 is equipped with a telescopic rod 19, and the first end of the swing arm 2 is equipped with a second abutment part 20. The telescopic rod 19 abuts against the second abutment part 20. When the driver 1 is powered on, the telescopic rod 19 extends and pushes the second abutment part 20 to make the swing arm 2 swing forward. When the driver 1 is powered off, the telescopic rod 19 retracts, the sleeve 3 returns to its original position and pushes the first abutment part 13 to make the swing arm 2 swing back to its original position. The driver 1 is a wax motor.

[0044] The housing 8 has a first mounting groove 21 inside, and the detection switch 7 is mounted on the first mounting groove 21. The detection switch 7 is fixed on the first mounting groove 21 by the first buckle 28. A through hole 22 is provided on one side of the housing 8 corresponding to the position of the first mounting groove 21. The through hole 22 connects to the first mounting groove 21. The first terminal 23 of the detection switch 7 extends out of the housing 8 through the through hole 22 for easy wiring.

[0045] The detection switch 7 is provided with a trigger part 29. When the push rod 4 retracts backward, it acts on the trigger part 29 to trigger the detection switch 7 and thus connect the power supply. When the push rod 4 pushes forward or extends out, it disengages from the trigger part 29 to disconnect the power supply. The detection switch 7 is a micro switch.

[0046] The housing 8 has a second mounting slot 30 inside, and the driver 1 is mounted on the second mounting slot 30. On the other side of the housing 8, an opening 31 is provided corresponding to the position of the second mounting slot 30. The opening 31 connects to the second mounting slot 30, and the second terminal 32 of the driver 1 extends out of the housing 8 through the opening 31 for easy wiring.

[0047] The outer casing 8 includes a lower casing 33 and an upper cover 34. The upper cover 34 covers the top of the lower casing 33. The lower casing 33 and the upper cover 34 are connected by a snap-fit. A receiving cavity 35 is formed between the lower casing 33 and the upper cover 34. The driver 1, the swing rod 2, the sleeve 3, the push rod 4, the first elastic element 5, the second elastic element 6 and the detection switch 7 are disposed in the receiving cavity 35.

[0048] The dishwasher also includes an inner tub 36, and a door 9 is located on the front side of the inner tub 36. A door ejection device A is located on the top of the inner tub 36. When the ejector rod 4 is ejected, it pushes the door 9 to open at a small angle, thereby expelling the moisture inside the inner tub 36 during the dishwasher drying process. After the door 9 is opened, the ejector rod 3 returns to its original position to avoid affecting the closing of the door 9, and at the same time prepares for the next opening of the door 9.

[0049] An action rod 37 is provided on the rear side of the door body 9. When the push rod 4 is pushed out, it pushes the action rod 37 to open the door body 9. When the door body 9 is closed, the action rod 37 acts on the push rod 4 to push the push rod 4 to retract backward.

[0050] A washing pump 38 is installed at the bottom of the inner tank 36. When the washing pump 38 is working, it can draw water into the inner tank 36. The washing pump 38 is existing technology and will not be described in detail here. When the push rod 4 triggers the detection switch 7, the power is turned on and the washing pump 38 can work normally. When the push rod 4 is disengaged from the detection switch 7, the power is turned off and the washing pump 38 stops working.

[0051] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door ejection device for a dishwasher with gate control, the dishwasher including a door (9), characterized in that: The door ejection device (A) includes a driver (1), a swing rod (2), a sleeve (3), a push rod (4), a first elastic element (5), a second elastic element (6), a detection switch (7), and a housing (8). The driver (1) drives the first end of the swing rod (2), the tail end of the swing rod (2) abuts against the sleeve (3), the sleeve (3) is fitted onto the push rod (4), the first elastic element (5) is disposed between the sleeve (3) and the housing (8), and the second elastic element (6) is disposed between the sleeve (3) and the push rod (4). When the door (9) is closed, the push rod (4) is pushed back to retract so that the push rod (4) acts on the detection switch (7), thereby connecting the power supply and compressing the second elastic element (6) to store energy. When the driver (1) drives the swing arm (2) to swing forward, the swing arm (2) pushes the sleeve (3) and the push rod (4) forward, thereby pushing the door (9) to open, and the push rod (4) disengages from the detection switch (7) to disconnect the power supply, and the first elastic element (5) is compressed to store energy; When the door (9) is opened under the action of external force, the top rod (4) extends forward under the elastic force of the second elastic element (6) and disengages from the detection switch (7) to disconnect the power supply.

2. The dishwasher door ejection device with gate control according to claim 1, characterized in that: The sleeve (3) has a notch (10), the push rod (4) has a protrusion (11), the protrusion (11) is movably mounted on the notch (10), and the push part (24) is provided on the rear side of the notch (10). When the door body (9) pushes the top rod (4) to retract backward, the protrusion (11) moves backward on the notch (10) and stops at the push part (24). When the swing rod (2) swings forward, it pushes the sleeve (3) forward so that the sleeve (3) acts on the protrusion (11) through the push part (24), thereby pushing the push rod (4) forward. When the push rod (4) extends forward under the elastic force of the second elastic element (6), the protrusion (11) moves forward on the notch (10).

3. The dishwasher door ejection device with gate control according to claim 2, characterized in that: The first end of the first elastic element (5) abuts against the sleeve (3) and is close to the notch (10), and the tail end of the first elastic element (5) abuts against the inner wall of the outer shell (8). When the push rod (4) is in the ejected state and the driver (1) is de-energized, the sleeve (3) is reset backward under the elastic force of the first elastic element (5), and when the sleeve (3) is reset, the first elastic element (5) acts on the protrusion (11) to reset the push rod (4) backward.

4. The dishwasher door ejection device with gate control according to claim 2, characterized in that: A limiting protrusion (12) is provided on the swing arm (2), the first end of the second elastic element (6) abuts against the inner wall of the sleeve (3), and the tail end of the second elastic element (6) abuts against the limiting protrusion (12); When the door body (9) pushes the top rod (4) to retract backward, the limiting protrusion (12) compresses the second elastic element (6) backward. When the door (9) is opened under the action of external force, the second elastic element (6) acts on the limiting protrusion (12) to push the top rod (4) to extend forward.

5. The dishwasher door ejection device with gate control according to claim 3, characterized in that: The tail end of the swing rod (2) is provided with a first abutting part (13), which abuts against the sleeve (3). The first abutting part (13) is provided with a clearance opening (14), and the top rod (4) passes through the clearance opening (14).

6. The dishwasher door ejection device with gate control according to claim 1, characterized in that: A rotating part (15) is provided between the swing rod (2) and the outer shell (8). The swing rod (2) is rotatably mounted on the outer shell (8) through the rotating part (15). The rotating part (15) is close to the head end of the swing rod (2) and far away from the tail end of the swing rod (2).

7. The dishwasher door ejection device with gate control according to claim 1, characterized in that: The outer shell (8) is provided with a guide groove (16), and the sleeve (3) is provided with a guide rib (17). The guide rib (17) is reciprocally slidably disposed on the guide groove (16).

8. The dishwasher door ejection device with gate control according to claim 1, characterized in that: The outer casing (8) is provided with a guide hole (18), and the push rod (4) passes through the guide hole (18) and moves back and forth along the guide hole (18).

9. The dishwasher door ejection device with gate control according to claim 5, characterized in that: The driver (1) is provided with a telescopic rod (19), and the first end of the swing rod (2) is provided with a second abutment (20). The telescopic rod (19) abuts against the second abutment (20). When the driver (1) is powered on, the telescopic rod (19) extends and pushes the second abutment (20) so that the swing rod (2) swings forward. When the driver (1) is powered off, the telescopic rod (19) retracts, the sleeve (3) resets backward and pushes the first abutment (13) so that the swing rod (2) swings backward and resets.

10. The dishwasher door ejection device with gate control according to claim 1, characterized in that: The outer casing (8) is provided with a first mounting groove (21), and the detection switch (7) is installed on the first mounting groove (21). The side of the outer casing (8) is provided with a through hole (22) corresponding to the position of the first mounting groove (21). The through hole (22) connects to the first mounting groove (21), and the first terminal (23) of the detection switch (7) extends out of the outer casing (8) through the through hole (22).

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