Lock catch device of dish washing machine

Abstract

A lock catch device of a dish washing machine comprises a main body, a lock hook, a lock catch, a connecting rod assembly and a first microswitch, the lock hook and the connecting rod assembly are elastically arranged on the main body, and the lock catch is connected with a door body; when the door body is closed, the lock hook and the lock catch are mutually locked, the lock catch pushes the connecting rod assembly so that the connecting rod assembly can act on the first microswitch, and then it is detected that the door body is closed. When the door body is opened, the lock hook and the lock catch are mutually unlocked and opened, the lock catch is separated from the connecting rod assembly, so that the connecting rod assembly is elastically reset, and then the first microswitch is reset. According to the dish-washing machine lock catch device, when the door body is closed, the lock hook and the lock catch are locked mutually, the lock catch pushes the connecting rod assembly so that the connecting rod assembly can act on the first microswitch, then a circuit of the dish-washing machine can be switched on, the dish-washing machine can work normally, and if the door body of the dish-washing machine is not closed, the first microswitch cannot be triggered; therefore, whether the door body is closed or not is detected, and the use safety of the dish washing machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a locking device for a dishwasher. Background Technology

[0002] Chinese patent document 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 is connected 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 working, the driver drives the door latch forward or backward through the transmission assembly, causing the door to open or close semi-automatically. However, this dishwasher cannot detect whether the door is closed when it is shut down. If the dishwasher starts operating before the door is closed, a safety hazard may exist.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a locking device for a dishwasher that is simple in structure, accurate in detection, safe and reliable, provides a good user experience, and is highly practical, so as to overcome the shortcomings of the prior art.

[0005] A locking device for a dishwasher designed for this purpose includes a main body, characterized in that it further includes a locking hook, a locking latch, a connecting rod assembly, and a first micro switch. The locking hook and the connecting rod assembly are elastically disposed on the main body, and the locking latch is connected to the door. When the door is closed, the locking hook and the locking latch are locked together, and the locking latch pushes the connecting rod assembly so that the connecting rod assembly acts on the first micro switch, thereby detecting that the door is closed. When the door is opened, the locking hook and the locking latch are unlocked and opened, and the locking latch disengages from the connecting rod assembly so that the connecting rod assembly is elastically reset, thereby resetting the first micro switch.

[0006] The lock hook has a hook part, and the lock buckle has a buckle hole. When the hook part is fastened to the buckle hole, the lock hook and the lock buckle are locked together. When the hook part is disengaged from the buckle hole, the lock hook and the lock buckle are unlocked and opened.

[0007] The main body includes a movable push rod, which is elastically connected to the lock hook through a first elastic element. When the push rod moves, it pushes out or closes the door in sequence through the lock hook and the latch.

[0008] A movable mating part is provided between the push rod and the locking hook. The movable mating part includes a shaft and a slot. The shaft is movably mounted on the slot. The locking hook is oscillating on the push rod through the cooperation of the shaft and the slot, so as to realize the mutual locking or unlocking of the locking hook and the latch.

[0009] The linkage assembly comprises a first linkage and a second linkage which are matched with each other, and the second linkage is elastically arranged on the main body; when the door body is closed, the lock catch sequentially pushes the first linkage and the second linkage, so that the second linkage acts on the first micro switch.

[0010] The second elastic member is arranged between the second linkage and the main body, and when the door body is opened, the second elastic member sequentially pushes the second linkage and the first linkage to reset, and then resets the first micro switch.

[0011] The main body is provided with a second micro switch, a third micro switch, a first push block and a second push block, and the push rod is provided with a limiting protrusion; when the push rod moves to the maximum stroke, the limiting protrusion pushes the first push block to act on the second micro switch; and when the push rod moves to the minimum stroke, the limiting protrusion pushes the second push block to act on the third micro switch.

[0012] The first linkage and the second linkage are respectively arranged on the main body in a sliding mode, and the second linkage acts on or is separated from the first micro switch when sliding.

[0013] The first linkage and the second linkage are respectively arranged on the main body in a rotating mode, and the first linkage and the second linkage are hingedly connected with each other; when the second linkage rotates, the second linkage acts on or is separated from the first micro switch.

[0014] The main body further comprises a driver and a gear assembly, the push rod is provided with a rack portion, the driver is drivingly connected with the gear assembly, the gear assembly is meshed with the rack portion, and the driver drives the push rod to move through the gear assembly and the rack portion.

[0015] When the door body is closed, the lock catch pushes the linkage assembly to make the linkage assembly act on the first micro switch, and then the circuit of the dishwasher is turned on, so that the dishwasher can normally work; if the door body of the dishwasher is not closed, the first micro switch cannot be triggered, and the dishwasher cannot start working, so that whether the door body is closed or not is detected, and the safety of the dishwasher is improved, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional view of the lock catch device in an embodiment of the utility model.

[0017] Figure 2 It is a partial structure schematic view of the lock catch device in an embodiment of the utility model.

[0018] Figure 3 It is a whole structure schematic view of the lock catch device in an embodiment of the utility model.

[0019] Figure 4It is the exploded structural schematic view of the lock catch device in one embodiment of the utility model.

[0020] Figure 5 It is the local structural schematic view of the lock catch device in one embodiment of the utility model.

[0021] Figure 6 It is the overall structural schematic view of the lock catch in one embodiment of the utility model.

[0022] Figure 7 It is the local structural schematic view of the lock catch device in one embodiment of the utility model.

[0023] Figure 8 It is the partial structural exploded view of the lock catch device in one embodiment of the utility model. DETAILED DESCRIPTION

[0024] The utility model will be further described in connection with the drawings and embodiments.

[0025] Referring to Figures 1-8 The lock catch device of the utility model, including main body 1, lock hook 2, lock catch 3, connecting rod assembly 4 and first micro switch 5, lock hook 2 and connecting rod assembly 4 are elastically arranged on main body 1, lock catch 3 is connected door body, and the control panel is arranged on the dishwasher, and the control panel is electrically connected with first micro switch 5;When the door body is closed, lock hook 2 and lock catch 3 are locked with each other, lock catch 3 pushes connecting rod assembly 4, so that connecting rod assembly 4 presses first micro switch 5, first micro switch 5 sends a signal to the control panel, the control panel controls the circuit conduction of the dishwasher, and the dishwasher can work normally, and then it is detected that the door body is closed, and the door body is locked at this time;When the door body is opened, lock hook 2 and lock catch 3 are unlocked and opened with each other, lock catch 3 is separated from connecting rod assembly 4, so that connecting rod assembly 4 is elastically reset, and then first micro switch 5 is reset, first micro switch 5 sends a signal to the control panel, the control panel controls the circuit disconnection of the dishwasher, and the dishwasher cannot start working;When the door body is manually pushed to close, lock hook 2 and lock catch 3 are locked with each other, and when the door body is manually pulled to open, lock hook 2 and lock catch 3 are unlocked and opened with each other.

[0026] Hook portion 6 is arranged on lock hook 2, and buckle hole 7 is arranged on lock catch 3, when hook portion 6 is buckled in buckle hole 7, lock hook 2 and lock catch 3 are locked with each other, when hook portion 6 is separated from buckle hole 7, lock hook 2 and lock catch 3 are unlocked and opened with each other.

[0027] Main body 1 includes push rod 8 movably arranged in front and back, push rod 8 is elastically connected with lock hook 2 through first elastic member 26, first elastic member 26 is a tension spring, and when push rod 8 moves forward and backward, lock hook 2 and lock catch 3 are sequentially pushed out or closed door body, and when push rod 8 pushes out the door body, the dishwasher automatically ventilates.

[0028] The lock hook 2 is provided with a hook hole 23, the push rod 8 is provided with a hook column 24, the front end of the first elastic member 26 is hooked with the hook hole 23, and the rear end of the first elastic member 26 is hooked with the hook column 24.

[0029] The push rod 8 and the lock hook 2 are provided with a movable cooperation part, the movable cooperation part comprises a shaft body 9 and a slot hole 10, the shaft body 9 is movably arranged on the slot hole 10, and the lock hook 2 is swingably arranged on the push rod 8 through cooperation of the shaft body 9 and the slot hole 10, so as to realize mutual locking or unlocking opening of the lock hook 2 and the lock catch 3.

[0030] The shaft body 9 is arranged on the push rod 8, and the slot hole 10 is arranged on the lock hook 2; or the shaft body 9 is arranged on the lock hook 2, and the slot hole 10 is arranged on the push rod 8.

[0031] The connecting rod assembly 4 comprises a first connecting rod 11 and a second connecting rod 12 which are matched with each other, and the second connecting rod 12 is elastically arranged on the main body 1; when the door body is closed, the lock catch 3 pushes the first connecting rod 11 and the second connecting rod 12 in sequence, so as to make the second connecting rod 12 act on the first micro switch 5.

[0032] The second elastic member 13 is further arranged between the second connecting rod 12 and the main body 1 (the first push block 29), the second elastic member 13 is a compression spring, when the door body is opened, the second elastic member 13 pushes the second connecting rod 12 and the first connecting rod 11 in sequence to reset, and then resets the first micro switch 5.

[0033] The second connecting rod 12 is provided with an acting inclined surface 14, the first micro switch 5 is provided with a trigger part 15, the second connecting rod 12 presses down the trigger part 15 through the acting inclined surface 14, and then the circuit of the dishwasher is turned on.

[0034] The main body 1 is provided with a second micro switch 27, a third micro switch 28, a first push block 29 and a second push block 30, the push rod 8 is provided with a limiting protrusion 31, when the push rod 8 moves to the maximum stroke (i.e. when the push rod 8 stretches to the maximum position), the limiting protrusion 31 pushes the first push block 29 to act on the second micro switch 27, the second micro switch 27 sends a signal to the driver 20, the driver 20 stops working, and the push rod 8 stops moving, when the push rod 8 moves to the minimum stroke (i.e. when the push rod 8 retracts to the maximum position), the limiting protrusion 31 pushes the second push block 30 to act on the third micro switch 28, the third micro switch 28 sends a signal to the driver 20, the driver 20 stops working, and the push rod 8 stops moving; the maximum stroke and the minimum stroke of the push rod 8 are controlled.

[0035] The first push block 29 and the second push block 30 are rotationally arranged on the main body 1, the second micro switch 27 and the third micro switch 28 are provided with trigger springs, the first push block 29 and the second push block 30 act on the trigger springs, and when the limiting protrusion 31 is separated from the first push block 29 and the second push block 30, the trigger springs push the first push block 29 and the second push block 30 to reset.

[0036] The first connecting rod 11 and the second connecting rod 12 are respectively slidably arranged on the main body 1, and the second connecting rod 12 acts on or is separated from the first micro switch 5 when sliding; the first connecting rod 11 and the second connecting rod 12 are slidably arranged, the tolerance line is better, the trigger stroke is larger, and the manufacturing error allowed is larger.

[0037] The lock catch 3 is provided with a first pushing portion 16, the first connecting rod 11 is provided with a first protrusion 17, and the lock catch 3 acts on the first protrusion 17 through the first pushing portion 16 to push the first connecting rod 11.

[0038] The first connecting rod 11 is provided with a second pushing portion 18, the second connecting rod 12 is provided with a second protrusion 19, when the lock catch 3 pushes the first connecting rod 11, the first connecting rod 11 acts on the second protrusion 19 through the second pushing portion 18 to push the second connecting rod 12, and then the second connecting rod 12 presses the trigger portion 15 through the action of the inclined surface 14; when the connecting rod assembly 4 is elastically reset, the second elastic member 13 exerts a force on the second connecting rod 12 to make the second connecting rod 12 act on the pushing portion 18 through the second protrusion 19 to push the first connecting rod 11, thereby achieving reset.

[0039] Alternatively, the first connecting rod 11 and the second connecting rod 12 are respectively rotationally arranged on the main body 1, the first connecting rod 11 and the second connecting rod 12 are hingedly connected to each other, and the second connecting rod 12 acts on or is separated from the first micro switch 5 when rotating; the first connecting rod 11 and the second connecting rod 12 are rotationally arranged, the trigger stroke is smaller, and the requirements for cooperation and movement gap are higher.

[0040] The main body 1 further comprises a driver 20 and a gear assembly 21, the push rod 8 is provided with a rack portion 22, the driver 20 is drivingly connected to the gear assembly 21, the gear assembly 21 is meshed with the rack portion 22, and the driver 20 drives the push rod 8 to move forward and backward through the gear assembly 21 and the rack portion 22 in sequence; the driver 20 is an electric motor, the driver 20 is respectively communicatively connected to the second micro switch 27 and the third micro switch 28, and the gear assembly 21 comprises a plurality of gears that are meshed with each other.

[0041] The main body 1 further comprises an outer shell 25, the push rod 8 and the second connecting rod 12 are movably arranged on the outer shell 25, the first connecting rod 11 is movably arranged on the push rod 8, the first micro switch 5 and the driver 20 are fixed on the outer shell 25, and the gear assembly 21 is rotationally arranged on the outer shell 25.

[0042] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A locking device for a dishwasher, comprising a main body (1), characterized in that: It also includes a locking hook (2), a latch (3), a linkage assembly (4) and a first micro switch (5). The locking hook (2) and the linkage assembly (4) are elastically set on the main body (1), and the latch (3) is connected to the door. When the door is closed, the locking hook (2) and the latch (3) are locked together, and the latch (3) pushes the linkage assembly (4) so ​​that the linkage assembly (4) acts on the first micro switch (5) and thus detects that the door is closed. When the door is opened, the locking hook (2) and the latch (3) are unlocked and opened, and the latch (3) disengages from the linkage assembly (4) so ​​that the linkage assembly (4) is elastically reset and thus the first micro switch (5) is reset.

2. The locking device of the dishwasher according to claim 1, characterized in that: The hook (2) is provided with a hook part (6), and the buckle (3) is provided with a buckle hole (7). When the hook part (6) is fastened to the buckle hole (7), the hook (2) and the buckle (3) are locked together. When the hook part (6) is disengaged from the buckle hole (7), the hook (2) and the buckle (3) are unlocked and opened.

3. The locking device for a dishwasher according to claim 1, characterized in that: The main body (1) includes a movable push rod (8), which is elastically connected to the lock hook (2) through the first elastic element (26). When the push rod (8) moves, it pushes out or closes the door through the lock hook (2) and the lock buckle (3) in sequence.

4. The locking device of the dishwasher according to claim 3, characterized in that: A movable mating part is provided between the push rod (8) and the locking hook (2). The movable mating part includes a shaft (9) and a slot (10). The shaft (9) is relatively movable on the slot (10). The locking hook (2) is oscillating on the push rod (8) through the cooperation of the shaft (9) and the slot (10) to realize the mutual locking or unlocking of the locking hook (2) and the latch (3).

5. The locking device for a dishwasher according to claim 1, characterized in that: The linkage assembly (4) includes a first linkage (11) and a second linkage (12) that cooperate with each other. The second linkage (12) is elastically set on the main body (1). When the door is closed, the latch (3) pushes the first linkage (11) and the second linkage (12) in sequence so that the second linkage (12) acts on the first micro switch (5).

6. The locking device for a dishwasher according to claim 5, characterized in that: It also includes a second elastic element (13), which is located between the second link (12) and the main body (1). When the door is opened, the second elastic element (13) pushes the second link (12) and the first link (11) to reset in sequence, thereby resetting the first micro switch (5).

7. The locking device for a dishwasher according to claim 3, characterized in that: The main body (1) is provided with a second micro switch (27), a third micro switch (28), a first push block (29) and a second push block (30). The push rod (8) is provided with a limit protrusion (31). When the push rod (8) moves to the maximum stroke, the limit protrusion (31) pushes the first push block (29) to act on the second micro switch (27). When the push rod (8) moves to the minimum stroke, the limit protrusion (31) pushes the second push block (30) to act on the third micro switch (28).

8. The locking device for a dishwasher according to claim 6, characterized in that: The first link (11) and the second link (12) are slidably mounted on the main body (1). When the second link (12) slides, it acts on the first micro switch (5) or disengages from the first micro switch (5).

9. The locking device of the dishwasher according to claim 6, characterized in that: The first link (11) and the second link (12) are respectively rotatably mounted on the main body (1). The first link (11) and the second link (12) are hinged to each other. When the second link (12) rotates, it acts on the first micro switch (5) or disengages from the first micro switch (5).

10. The locking device of the dishwasher according to claim 4, characterized in that: The main body (1) also includes a driver (20) and a gear assembly (21). A rack part (22) is provided on the push rod (8). The driver (20) drives the connected gear assembly (21). The gear assembly (21) meshes with the rack part (22). The driver (20) drives the push rod (8) to move in sequence through the gear assembly (21) and the rack part (22).

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