Door lock structure of cleaning machine

Abstract

A door lock structure of a cleaning machine comprises a cleaning tank and a door body arranged at an end opening of the cleaning tank in an openable and closable mode, and is characterized in that the edge of the door body is provided with a first rack; one side of the cleaning tank is provided with an air suction port, the door lock structure of the cleaning machine further comprises a fan, an air guide plate and a door locking mechanism, the fan is arranged on one side of the cleaning tank and used for exhausting water vapor in the cleaning tank, the air guide plate is rotatably arranged on the air suction port, and when the air guide plate is in an exhaust state, the fan is started, the air guide plate opens the air suction port, and when the air guide plate is in a non-exhaust state, the door locking mechanism locks the air suction port. The fan is closed, and the air guide plate closes the air suction port. The air deflector and the fan form an exhaust mechanism, the exhaust mechanism is matched with the door locking mechanism, water vapor coming out of a gap between the door body and the front side of the cleaning tank is exhausted through the exhaust mechanism at the moment of door jacking and cannot be sprayed out from the front side, and the hands of a user are not prone to being scalded when the user opens the door.

Description

Technical Field

[0001] The invention relates to a cleaning machine, in particular to an unlocking and locking structure of a door body of the cleaning machine. Background Art

[0002] At present, sink-type cleaning machines (also known as sink-type dishwashers) close their doors by inserting a lock hook into a door lock, and driving the top door through a motor. For relevant literature, please refer to the Chinese invention patent application disclosure with application number 201910166797.5 "A cleaning machine with a door that can automatically open and close" (application publication number CN111657815 A); you can also refer to the Chinese invention patent application disclosure with application number 202410079365.1 "Door lock, dishwasher and control method thereof" (application publication number CN118021234A).

[0003] There are the following shortcomings: first, the protruding lock hook of the door body is unsightly and can easily hit people, and the hole for inserting the lock hook of the door lock faces upwards and is easy to get water in; second, the motor is set to push the door, which is troublesome to install and has a high manufacturing cost; finally, after pushing the door, water vapor will spray out quickly from the front side, and it is easy to burn your hands when opening the door at this time. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a door lock structure for a cleaning machine that can realize the top door without motor drive in view of the above technical status quo.

[0005] The second technical problem to be solved by the present invention is to provide a door lock structure for a washing machine which is not easy to burn hands when opening the door in view of the above-mentioned technical status.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a door lock structure of a cleaning machine, including a cleaning tank and a door body that can be opened and closed and is arranged at the port of the cleaning tank, characterized in that the edge of the door body has a first rack; one side of the cleaning tank has an air intake port, and the door lock structure of the cleaning machine also includes a fan, an air guide plate and a door locking mechanism, the aforementioned fan is arranged at one side of the cleaning tank, and is used to discharge the water vapor in the cleaning tank, the aforementioned air guide plate can be rotatably arranged on the air intake port, in the exhaust state, the fan is started, and the air guide plate opens the air intake port, in the non-exhaust state, the fan is turned off and the air guide plate closes the air intake port; the aforementioned door locking mechanism includes

[0007] A housing, disposed on one side of the aforementioned cleaning tank;

[0008] A gear set is rotatably disposed in the aforementioned housing and comprises at least an input gear and an output gear, wherein the aforementioned input gear portion is exposed on the inner wall of the cleaning tank and can mesh with the first rack for transmission; the gear set is unidirectionally drivenly connected to the aforementioned air guide plate;

[0009] The electromagnet is arranged in the housing and comprises a coil, an iron core and a first reset member, wherein the iron core is located in the inner cavity of the coil, and the first reset member is used to reset the iron core. When the coil is energized, the iron core retracts into the inner cavity of the coil;

[0010] A limiting column, elastically disposed in the aforementioned housing;

[0011] a second rack, movably disposed in the housing and having a locking groove matched with the iron core and a limiting groove and an inclined portion matched with the limiting post, wherein the inclined portion is located at one side of the limiting groove so that the limiting post can be separated from the limiting groove; and

[0012] The second resetting member is arranged in the housing and is used for resetting the second rack.

[0013] Furthermore, in order to control the cleaning function of the cleaning machine and the opening and closing of the fan, the door locking mechanism also includes

[0014] A first micro switch, disposed in the housing, for sensing the position state of the second rack;

[0015] A second micro switch, disposed in the aforementioned housing, for sensing the position state of the second rack;

[0016] The door body is in a closed state, the first micro switch is closed, the second micro switch is opened, the cleaning machine is in cleaning operation, and the fan is turned off;

[0017] When the door body is in the open door state, the first micro switch is closed, the second micro switch is closed, and the fan is turned on;

[0018] When the door body is in the open state, the first micro switch is turned on, the second micro switch is turned off, and the fan is turned off.

[0019] Furthermore, the first micro switch and the second micro switch are arranged at intervals, and the second rack is laterally extended with a touch portion, which can respectively cooperate with the aforementioned first micro switch and the first micro switch button portion.

[0020] The housing has an air intake port corresponding to the air intake port, and the air guide plate and the fan are arranged in the housing. In this way, the air guide plate, the fan and the door locking mechanism form an installation module, which is convenient for assembly and maintenance of the cleaning machine, and an exhaust channel is formed inside the housing.

[0021] The housing has an exhaust port, and the air outlet of the fan is connected to the exhaust port. Furthermore, a water tank is provided on one side of the cleaning tank, and an exhaust port is provided on one side of the inner wall of the water tank, and the exhaust port can receive the airflow discharged from the exhaust port. The exhaust port is designed away from the operator to avoid damage to the operator.

[0022] Preferably, the first restoring member and the second restoring member are both springs.

[0023] Preferably, the limiting column is elastically disposed in the housing via a third resetting member.

[0024] Preferably, the third reset member is a spring.

[0025] Preferably, the gear set comprises an input gear, a first gear, a second gear and an output gear in sequence, the two ends of the aforementioned first gear are respectively meshed with the input gear and the second gear, the aforementioned second gear is meshed with the output gear, and the aforementioned first gear or second gear is connected to the air guide plate in a one-way transmission manner.

[0026] The second gear or the first gear has a coaxially rotating fan-shaped gear, and correspondingly, the air guide plate has a coaxially rotating first ratchet, the first ratchet is adapted with a second ratchet, the second ratchet has a coaxially rotating transmission gear, the transmission gear is meshed with the aforementioned fan-shaped gear, and a compression spring is provided on one side of the aforementioned second ratchet, the compression spring always forces the second ratchet to move in the direction of the first ratchet, and the air guide plate is connected to a fourth reset member. The first ratchet, the second ratchet and the compression spring cooperate to realize one-way transmission, and the fan gear is provided to ensure that the air guide plate can be closed after the door body is opened.

[0027] Preferably, the fourth reset member is a torsion spring, one end of which abuts against the air guide plate, and the other end of which abuts against the inner wall of the shell.

[0028] Preferably, one side of the door body is hinged to the cleaning tank port, and the other side has the first rack.

[0029] Preferably, the cleaning tank port has a step ring, and when the door body is in a closed state, the inner end surface of the door body is completely placed on the upper end surface of the step ring.

[0030] Preferably, the air intake port is opened on the inner wall of the cleaning tank and is located above the step ring.

[0031] Preferably, the input gear portion is exposed on the inner wall of the cleaning tank and is located above the step ring.

[0032] Compared with the prior art, the advantages of the present invention are: the door lock is placed on the side, and the functions of opening and locking the door are realized through the first gear on the side of the door lock, so that there is no need to open a hole at the bottom of the tank body, and it is less likely to get water than the door lock installed at the bottom. The air guide plate and the air blower constitute an exhaust mechanism, and the exhaust mechanism cooperates with the door locking mechanism. At the moment of opening the door, the water vapor coming out of the gap between the door body and the front side of the cleaning tank is discharged through the exhaust mechanism instead of being sprayed out from the front side, so that the user is not likely to get burned when opening the door. The opening of the door is completed by the second rack and the second reset member, without the need for motor drive, which reduces the installation requirements and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a state diagram of the embodiment when the door is opened.

[0034] Figure 2 for Figure 1 Magnified view of the middle portal.

[0035] Figure 3 for Figure 1 Schematic diagram of the structure from another perspective.

[0036] Figure 4 for Figure 3 Exploded diagram of .

[0037] Figure 5 This is an enlarged exploded view of the door locking mechanism.

[0038] Figure 6 for Figure 5 An enlarged exploded view of the part after the shell is removed.

[0039] Figure 7 for Figure 6 Schematic diagram of the structure of the second rack.

[0040] Figure 8 It is an enlarged three-dimensional cross-sectional view of the embodiment when the door is opened.

[0041] Fig. 9 for Figure 8 Enlarged view of part A in the middle.

[0042] Fig.10 Another enlarged three-dimensional cross-sectional view of the top door of the embodiment.

[0043] Fig.11 for Fig.10 Enlarged view of part B in the middle.

[0044] Fig.12 This is the state diagram of the embodiment when the door is closed.

[0045] Fig.13 It is an enlarged three-dimensional cross-sectional view of the embodiment when the door is closed.

[0046] Fig.14 for Fig.13 Enlarged view of part C in the middle.

[0047] Fig.15 This is the state diagram of the embodiment when the door is opened. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below with reference to the accompanying drawings.

[0049] like Figure 1 , Figure 3, Figure 4 and Figure 5 As shown, the cleaning machine in this embodiment includes a cleaning tank 1b, a water tank 2b, a fan 4 and an air guide plate 3, a door locking mechanism and a door body 3b that can be opened and closed at the port of the cleaning tank 1b. A cleaning mechanism (not shown in the figure) is provided in the cleaning tank 1b, which can be used to clean bowls and tableware. An air intake port 13b is provided on one side of the cleaning tank 1b, and a step ring 14b is provided on the port of the cleaning tank 1b. When the door body 3b is in a closed state, the inner end surface of the door body 3b is completely placed on the upper end surface of the step ring 14b. The air intake port 13b is provided on the inner wall of the cleaning tank 1b and is located above the step ring 14b. A water tank 2b is provided on one side of the cleaning tank 1b, and an exhaust port 21b is provided on one side of the inner wall of the water tank 2b.

[0050] Combination Figure 2 As shown, one side of the door body 3b is hinged to the port of the cleaning tank 1b through a hinge 12b, and the other side edge has a first rack 31b. The fan 4 is a volute fan, which is arranged on one side of the cleaning tank 1b to discharge the water vapor in the cleaning tank 1b. The air guide plate 3 is rotatably arranged on the air inlet 13b. In the exhaust state, the fan 4 is started and the air guide plate 3 opens the air inlet 13b. In the non-exhaust state, the fan 4 is turned off and the air guide plate 3 closes the air inlet 13b. In this embodiment, the air guide plates 3 are a pair and are arranged in a straight line.

[0051] Combination Figures 5 to 11 As shown, the door locking mechanism includes a housing 1, a gear set 2, an electromagnet 5, a limit column 7, a second rack 6, a second reset member 6a, a first micro switch 81 and a second micro switch 82. The housing 1 is disposed on one side of the cleaning tank 1b. The housing in this embodiment includes a base 11 and a cover plate 12 disposed on the base 11.

[0052] The gear set 2 is rotatably disposed in the housing 1. The gear set 2 includes an input gear 21, a first gear 22, a second gear 23 and an output gear 24 in sequence. The input gear 21 is partially exposed on the inner wall of the cleaning tank 1b and is located above the step ring 14b. The two ends of the first gear 22 are respectively meshed with the input gear 21 and the second gear 23, the second gear 23 is meshed with the output gear 24, and the first gear 22 is connected to the air guide plate 3 in a one-way transmission. The input gear 21 is partially exposed on the inner wall of the cleaning tank 1b and can be meshed with the first rack 31b for transmission; the gear set 2 is connected to both air guide plates 3 in a one-way driving manner.

[0053] The electromagnet 5 is arranged in the shell 1 and includes a coil 51, an iron core 53 and a first reset member 52. The iron core 53 is located in the inner cavity of the coil 51. The first reset member 52 is used to reset the iron core 53. When the coil 51 is energized, the iron core 53 retracts into the inner cavity of the coil 51. The limiting column 7 is elastically arranged in the shell 1 through the third reset member 71.

[0054] The second rack 6 is movably disposed in the housing 1 and has a locking groove 62 matched with the iron core 53, a limiting groove 63 matched with the limiting column 7, and an inclined portion 64, the inclined portion 64 is located on one side of the limiting groove 63 so that the limiting column 7 can be separated from the limiting groove 63; the second rack 6 has a contact portion 61 extending laterally. The second reset member 6a is disposed in the housing 1 and is used to reset the second rack 6.

[0055] In this embodiment, the first restoring member 52, the second restoring member 6a and the third restoring member 71 are all springs.

[0056] The first micro switch 81 and the second micro switch 82 are both arranged in the housing 1. The first micro switch 81 is located above the second micro switch 82 and arranged at intervals. Both are used to sense the position state of the second rack 6. The first micro switch 81 and the button part of the first micro switch 81 can both cooperate with the touch part 61.

[0057] Combination Figure 4 and Figure 5 As shown, the shell 1 in this embodiment has an air intake port 13 and an exhaust port 14 corresponding to the air intake port 13b, and the air guide plate 3 and the fan 4 are arranged in the shell 1, so that the air guide plate 3, the fan 4 and the door locking mechanism form an installation module, which is convenient for the assembly and maintenance of the cleaning machine. An exhaust channel is formed inside the shell 1, and the air outlet end of the fan 4 is connected to the exhaust port 14. The exhaust port 21b can receive the airflow discharged from the exhaust port 14.

[0058] The first gear 22 has a coaxially rotating sector gear 25, and correspondingly, the air guide plate 3 has a coaxially rotating first ratchet 34, on which a second ratchet 35 is adapted, and the second ratchet 35 has a coaxially rotating transmission gear 33, which meshes with the sector gear 25, and a compression spring 32 is provided on one side of the transmission gear 33, which always forces the second ratchet 35 to always move in the direction of the first ratchet 34, and the air guide plate 3 is connected to a fourth reset member 31. The fourth reset member 31 in this embodiment is a torsion spring, one end of which abuts against the air guide plate 3, and the other end abuts against the inner wall of the housing 1. The first ratchet, the second ratchet and the compression spring cooperate to realize one-way transmission, and the sector gear is provided to ensure that the air guide plate can be closed after the door body is opened.

[0059] Closed state:

[0060] When the washing machine is required to work, bowls or tableware are placed in the washing tank, and the door body is closed. When the door is closed to a certain extent, the first rack on one side of the door body contacts the input gear.

[0061] Combination Fig.13 , Fig.14 and Fig.15As shown, then press the door body downward by hand, the input gear rotates counterclockwise under the action of the first rack, and the output gear rotates clockwise through the transmission of the first gear and the second gear. The second rack moves downward under the action of the output gear, and the second reset member is compressed. When the door body is completely closed, the head of the iron core is inserted into the locking groove of the second rack under the action of the first reset member, and the second rack is locked and cannot move. At this time, the input gear cannot rotate either, and the door body cannot be opened. After being completely closed, the touch part of the second gear contacts the pressing part of the second micro switch and there is a signal, and the pressing part of the first micro switch does not contact the second rack and there is no signal. At this time, the cleaning function can be turned on normally. Cleaning cannot be performed in other signal states, and the cleaning machine will report an error.

[0062] During the door closing process, the fan gear will rotate clockwise like the first gear, and the transmission gear will rotate counterclockwise. Since the transmission gear and the air guide plate are matched through the ratchet structure, when the transmission gear rotates counterclockwise, the air guide plate will not rotate with it. If the transmission gear rotates clockwise, the air guide plate will also rotate clockwise.

[0063] Top door status:

[0064] When the cleaning is completed and the drying state is entered, the coil is energized (it can also be activated by the door opening key), the iron core moves to the left under the action of the coil, the head is released from the locking groove of the second rack, and the second rack moves upward under the action of the second reset member. At this time, the output gear rotates counterclockwise, and the input gear rotates clockwise through the transmission of the first gear and the second gear, and the door body is lifted up under the action of the input gear. When the second rack moves to a certain height, the limit column is stuck in the limit groove of the second rack under the action of the third reset member, and the second rack stops moving. Fig.11 shown.

[0065] When the door is pushed up, the first gear rotates clockwise, the fan gear also rotates clockwise like the first gear, the transmission gear rotates counterclockwise, and the air guide plate rotates counterclockwise like the transmission gear. When the air guide plate is slowly opened, there is no signal from the second micro switch and the first micro switch, and the fan starts at this time. The water vapor coming out from between the door and the cleaning tank will immediately enter the shell from the air intake port, and then the water vapor will be blown to the exhaust port of the nearby water tank through the internal air duct under the action of the fan. The water vapor will not go out directly from the front side. When the door is pushed up to a certain height, the door lock stops moving, the air guide plate is always in the open state, and the fan is always running to discharge the water vapor on the front side to help speed up drying. If the user does not open the door, the fan will move for a certain period of time.

[0066] Door open status:

[0067] When you need to open the door to get the bowl, if you just start drying or open the door with the door opening button, water vapor will come out of the cleaning tank. Since the fan will suck the water vapor away, the water vapor will not reach the handle, and the user will not burn his hands when opening the door. When the user opens the door, since the first rack and the input gear on the door body are still in meshing state, and there is an inclined portion at the matching place of the limit column and the second rack, under a certain external force, the limit column can come out of the inclined portion and disengage from the limit groove. Therefore, when the external force opens the door, the limit column will disengage from the limit groove, and the second rack will continue to move upward.

[0068] In this process, the sector gear rotates counterclockwise driven by the input gear. Since the teeth of the sector gear are incomplete, after the top door is completed, the combination Fig.15 As shown, only one tooth is in contact with the transmission gear. If it rotates a little more, the fan gear and the transmission gear will not be in contact. Therefore, when the door is opened, the fan gear rotates counterclockwise and does not contact the transmission gear, and the air guide plate is closed under the action of the torsion spring. During the upward movement of the second rack, the first micro switch is triggered. At this time, the first micro switch has a signal, the second micro switch has no signal, and the fan is turned off. When the door is open, the air guide plates in the door lock are all closed.

Claims

1. A door lock structure for a cleaning machine, comprising a cleaning tank (1b) and a door body (3b) which is openable and closable at the end of the cleaning tank (1b), characterized in that The edge of the door body (3b) is provided with a first rack (31b); one side of the cleaning tank (1b) is provided with an air inlet (13b); the door lock structure of the cleaning machine further comprises a fan (4), an air guide plate (3) and a door lock mechanism; the fan (4) is arranged at one side of the cleaning tank (1b) for discharging water vapor in the cleaning tank (1b); the air guide plate (3) is rotatably arranged on the air inlet (13b); in the exhaust state, the fan (4) is started and the air guide plate (3) opens the air inlet (13b); in the non-exhaust state, the fan (4) is turned off and the air guide plate (3) closes the air inlet (13b); the door lock mechanism comprises A housing (1) is disposed on one side of the cleaning tank (1b); A gear set (2) is rotatably disposed in the housing (1) and comprises at least an input gear (21) and an output gear (24), wherein the input gear (21) is partially exposed from the inner wall of the cleaning tank (1b) and can mesh with the first rack (31b) for transmission; the gear set (2) is unidirectionally drivenly connected to the air guide plate (3); The electromagnet (5) is arranged in the housing (1) and comprises a coil (51), an iron core (53) and a first reset member (52). The iron core (53) is located in the inner cavity of the coil (51). The first reset member (52) is used to reset the iron core (53). When the coil (51) is energized, the iron core (53) retracts into the inner cavity of the coil (51). A limiting column (7) is elastically arranged in the housing (1); a second rack (6) movably disposed in the housing (1) and having a locking groove matched with the iron core (53) and a limiting groove and an inclined surface matched with the limiting column (7), wherein the inclined surface is located on one side of the limiting groove so that the limiting column (7) can be separated from the limiting groove; and The second reset member (6a) is arranged in the housing (1) and is used for resetting the second rack (6).

2. The cleaning machine door lock structure according to claim 1, characterized in that The door locking mechanism also includes A first micro switch (81), disposed in the housing (1), for sensing the position state of the second rack (6); A second micro switch (82) is disposed in the housing (1) and is used to sense the position state of the second rack (6); When the door body (3b) is in a closed state, the first micro switch (81) is closed, the second micro switch (82) is opened, the cleaning machine is in cleaning operation, and the fan (4) is turned off; When the door body (3b) is in the open state, the first micro switch (81) is closed, the second micro switch (82) is closed, and the fan (4) is turned on; When the door body (3b) is in an open state, the first micro switch (81) is turned on, the second micro switch (82) is turned off, and the fan (4) is turned off.

3. The cleaning machine door lock structure according to claim 2, characterized in that The first micro switch (81) and the second micro switch (82) are arranged at intervals, and the second rack (6) is laterally extended with a touch portion (61), and the touch portion (61) can respectively cooperate with the first micro switch (81) and the button portion of the first micro switch (81).

4. The cleaning machine door lock structure according to claim 1, characterized in that The housing (1) is provided with an air intake port (13) corresponding to the air intake port (13b), and the air guide plate (3) and the fan (4) are arranged in the housing (1).

5. The cleaning machine door lock structure according to claim 4, characterized in that The housing (1) has an exhaust port (14), and the air outlet end of the fan (4) is connected to the exhaust port (14).

6. The cleaning machine door lock structure according to claim 5, characterized in that A water tank (2b) is provided on one side of the cleaning tank (1b), and an exhaust port (21b) is provided on one side of the inner wall of the water tank (2b). The exhaust port (21b) can receive the airflow discharged from the exhaust port (14).

7. The cleaning machine door lock structure according to claim 1, characterized in that The first restoring member (52) and the second restoring member (6a) are both springs.

8. The cleaning machine door lock structure according to claim 1, characterized in that The limiting column (7) is elastically arranged in the housing (1) via a third restoring member (71).

9. The cleaning machine door lock structure according to claim 1, characterized in that The third reset member (71) is a spring.

10. The cleaning machine door lock structure according to claim 1, characterized in that The gear set (2) comprises an input gear (21), a first gear (22), a second gear (23) and an output gear (24) in sequence; two ends of the first gear (22) are respectively meshed with the input gear (21) and the second gear (23); the second gear (23) is meshed with the output gear (24); and the first gear (22) or the second gear (23) is connected to the air guide plate (3) in a one-way transmission manner.

11. The cleaning machine door lock structure according to claim 10, characterized in that The second gear (23) or the first gear (22) has a coaxially rotating fan-shaped gear (25), and correspondingly, the air guide plate (3) has a coaxially rotating first ratchet (34), and the first ratchet (34) is equipped with a second ratchet (35), and the second ratchet (35) has a coaxially rotating transmission gear (33), and the transmission gear (33) is meshed with the aforementioned fan-shaped gear (25), and a clamping spring (32) is provided on one side of the aforementioned second ratchet (35), and the clamping spring (32) always forces the second ratchet (35) to move in the direction of the first ratchet (34), and the air guide plate (3) is connected to a fourth reset member (31).

12. The cleaning machine door lock structure according to claim 11, characterized in that The fourth reset member (31) is a torsion spring, one end of which abuts against the air guide plate (3) and the other end of which abuts against the inner wall of the shell (1).

13. The cleaning machine door lock structure according to claim 1, characterized in that One side of the door body (3b) is hinged to the end of the cleaning tank (1b), and the other side is provided with the first rack (31b).

14. The cleaning machine door lock structure according to claim 1, characterized in that The cleaning tank (1b) port has a step ring (14b), and when the door body (3b) is in a closed state, the inner end surface of the door body (3b) is completely placed on the upper end surface of the step ring (14b).

15. The cleaning machine door lock structure according to claim 14, characterized in that The air intake port (13b) is opened on the inner wall of the cleaning tank (1b) and is located above the step ring (14b).

16. The cleaning machine door lock structure according to claim 14, characterized in that The input gear (21) is partially exposed on the inner wall of the cleaning tank (1b) and is located above the step ring (14b).

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