Water leakage prevention structure of cleaning machine

Abstract

The invention discloses a water leakage prevention structure of a cleaning machine. The electric cooker comprises a lower shell and an upper cover, an inner container is fixed to the inner side of the lower shell, an inner door cover corresponding to the inner container is fixed to the inner side of the upper cover, an inner door cover protruding rib is fixed to the bottom of the inner door cover, a protruding rib inserting groove matched with the inner door cover protruding rib is formed in an upper end opening of the inner container, and the inner door cover protruding rib is inserted into the protruding rib inserting groove. The inner door cover protruding rib and the protruding rib inserting groove are vertically connected in an inserted mode, a drainage rib is further fixed to the bottom of the inner door cover and located on the inner side of the inner door cover protruding rib, an attaching groove matched with the drainage rib is formed in the inner side wall of the inner container, and a backflow hole is formed in the inner container. The bottom of the convex rib inserting groove is communicated with the inner side wall of the inner container through a backflow hole. The sealing structure has the beneficial effect that the door body can be sealed without adding an elastic sealing strip.

Description

Technical Field

[0001] The invention relates to the technical field related to a water leakage prevention structure of a cleaning machine, and in particular to a water leakage prevention structure of a cleaning machine. Background Art

[0002] A spray cleaning machine is a cleaning device that uses water pressure to wash the surface of an object. It peels off and washes away dirt on the surface of the object to achieve the purpose of cleaning the surface of the object, helping people reduce the burden of cleaning.

[0003] The door sealing structure of a traditional cleaning machine generally has an elastic sealing strip at the sealing part of the door opening and closing of the door, and relies on the compression of the elastic sealing strip of the door to achieve the door sealing effect. Since the elasticity of the elastic material weakens after long-term use, the sealing effect of the door will deteriorate. In addition, since the dirt inside the cleaning machine after washing can easily hide in the installation groove of the sealing strip, the sealing strip needs to be removed for cleaning, which causes great inconvenience to the user.

[0004] In summary, there is currently a need for a water-leakage-proof structure of a cleaning machine that can seal the door body without adding an elastic sealing strip. Summary of the invention

[0005] The present invention aims to overcome the shortcomings of the prior art that the elastic sealing strip loses its elasticity after long-term use, the sealing effect of the door body becomes worse, dirt is easily hidden in the installation groove of the sealing strip, and the sealing strip needs to be disassembled for cleaning. The invention provides a water-leakage-proof structure of a cleaning machine that can seal the door body without adding an elastic sealing strip.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A water leakage prevention structure of a washing machine comprises a lower shell and an upper cover, wherein an inner liner is fixed on the inner side of the lower shell, an inner door cover corresponding to the inner liner is fixed on the inner side of the upper cover, an inner door cover convex rib is fixed on the bottom of the inner door cover, a convex rib slot matching the inner door cover convex rib is arranged at the upper port of the inner liner, the inner door cover convex rib and the convex rib slot are plugged up and down, a drainage rib is also fixed on the bottom of the inner door cover, the drainage rib is located on the inner side of the inner door cover convex rib, and a A fitting groove matching the drainage rib, a reflux hole is arranged on the inner liner, the bottom of the convex rib slot is connected with the inner side wall of the inner liner through the reflux hole, a lock cavity is arranged at the bottom of the upper cover, the lock cavity is located on the outer side of the inner door cover, a lock buckle through hole is arranged on the bottom surface of the lock cavity, a lock buckle matching the lock buckle through hole is fixed at the upper port of the lower shell, a lock tongue is installed in the lock cavity, one end of the lock tongue is clamped with the lock buckle, and the other end of the lock tongue is placed on the outer surface of the upper cover.

[0007] The lower shell and the upper cover are connected up and down by the cooperation of the inner door cover rib and the rib slot, which has a simple structure and is easy to operate. By arranging a drainage rib on the inner side of the bottom of the inner door cover, so that it blocks the connection gap between the inner door cover rib and the rib slot from the inside, it is well prevented that the water for internal washing rushes out from the connection gap, and the water that rushes to the inner door cover wall can be drained to the inner tank; through the design of the reflux hole, a very small amount of water that may turn over the drainage rib and flow into the rib slot can be drained back to the inner tank. This scheme structure can seal the door body without adding an elastic sealing strip, and the structure is simple and reliable, and the cost is lower. When the upper cover is covered at the upper port of the lower shell, the lock buckle passes through the lock buckle through hole into the lock cavity, and automatically engages with one end of the lock tongue to lock the upper cover; when the upper cover needs to be removed, the user can turn the other end of the lock tongue to drive the entire lock tongue to move, so that one end of the lock tongue is separated from the lock buckle, and the upper cover can be unlocked, which has a simple structure and is easy to operate. The positioning cooperation of the lock block through hole and the lock buckle guides the assembly between the upper cover and the lower shell, allowing the user to accurately cover the upper cover on the upper port of the lower shell. At the same time, the hot air from washing cannot easily open the door, which is easy to operate and has good reliability.

[0008] Preferably, a lock tongue frame is fixed inside the lock cavity, and the lock tongue includes a rotating column, the rotating column is mounted on the lock tongue frame and is rotatably connected thereto, a lock rod and a lever are provided on the rotating column, one end of the lock rod is fixed to the side wall of the rotating column, the other end of the lock rod is engaged with a lock buckle, one end of the lever is fixed to the side wall of the rotating column, and the outer surface of the upper cover is provided with a lever hole connected to the lock cavity, and the other end of the lever is placed in the lever hole and is movably connected thereto. The lever, the rotating column and the lock rod are of an integrated injection molding design. When the upper cover needs to be removed, the user can move the lever at the lever hole to drive the lock rod on the rotating column to swing, so that the other end of the lock rod is separated from the lock buckle, and the upper cover can be unlocked, which has a simple structure and is easy to operate.

[0009] Preferably, a handle groove is provided on the outer wall of the upper cover, the lever hole is located on the upper end wall of the handle groove, the shape of the lock rod and the lever are both L-shaped and are respectively arranged on opposite sides of the rotating column, the other end of the lock rod and the other end of the lever are both located below the rotating column, the other end of the lock rod is placed between the rotating column and the lock buckle through hole, a buckle body 1 is fixed on the other end of the lock rod, the buckle body 1 is located on the side of the lock rod close to the lock buckle through hole, a buckle body 2 matching the buckle body 1 is fixed on the lock buckle, and the other end of the lock rod is engaged with the lock buckle through the cooperation of the buckle body 1 and the buckle body 2. The design of the handle groove makes it convenient for users to take the upper cover. When the upper cover needs to be removed, since the other end of the lever is arranged on the upper end wall of the handle groove, the user can use a finger to push the other end of the lever upward, thereby driving the lock rod on the rotating column to swing downward, so that the buckle body 1 on the other end of the lock rod flips downward and detaches from the buckle body 2 on the lock buckle, so that the upper cover can be unlocked, and then the upper cover can be easily lifted, with a simple structure and convenient operation.

[0010] Preferably, a spring frame is fixed inside the lock cavity, a lever reset spring is installed on the spring frame, the lever reset spring is located above the lever, the top end of the lever reset spring is connected to the spring frame, and the bottom end of the lever reset spring is connected to the lever. The other end of the lever is pressed against the lever hole under the elastic force of the lever reset spring, which can prevent the lock tongue from being separated from the lock buckle due to misrotation, thereby improving the stability of the locking connection. At the same time, the lever reset spring can also automatically reset the entire lock tongue.

[0011] Preferably, a connecting pipe is fixed on the bottom surface of the inner tank, the lower port of the connecting pipe is located outside the inner tank and a water inlet pipe connector is installed thereon, a partition is fixed inside the connecting pipe, the partition is located above the water inlet pipe connector, a water hole is provided on the partition, an elastic check plate matching the water hole is installed on the bottom surface of the partition, the upper port of the connecting pipe is located inside the inner tank and a spray assembly is installed thereon, the spray assembly and the connecting pipe are plugged into each other, the partition is located below the spray assembly, and a lower top column matching the elastic check plate is provided at the bottom of the spray assembly. When the spray assembly is removed, the water flowing in from the water inlet pipe connector will automatically press the elastic check plate onto the partition and block the water hole, preventing water from leaking from the water hole and preventing water flow from being wasted due to pressure relief. This maintains the water flow pressure well and improves the cleaning effect of washing. When the spray assembly is inserted into the connecting pipe, the lower top column at the bottom of the spray assembly will automatically press the elastic check plate downward to open the water hole. At this time, water can flow through the water hole to the spray assembly to spray and wash objects. Through this design, users can realize two water distribution methods by disassembling or installing the spray assembly. The structure is simple and the operation is convenient.

[0012] Preferably, a placement basket is installed inside the inner tank, and the placement basket and the inner tank are movably connected up and down, the spray assembly includes a spray arm connector, and the spray arm connector includes an upper limit block, the upper limit block is installed on the placement basket, the lower top column is fixed to the bottom of the upper limit block, the lower top column is sleeved with a spray arm group, the side wall of the lower top column is provided with an external threaded area, and a fastening nut is installed at the external threaded area, the spray arm group is installed between the upper limit block and the fastening nut, and a connecting pipe limiting groove is provided on the side of the fastening nut facing the connecting pipe, the upper port of the connecting pipe is installed in the connecting pipe limiting groove and is sealed therewith, a water cavity is provided inside the spray arm group, and an axial guide groove is provided on the side wall of the lower top column, the axial guide groove is located on the inner side of the external threaded area, and the water through hole and the water cavity are connected through the axial guide groove. When the spray assembly is inserted into the connecting pipe, the lower top column at the bottom of the spray assembly will automatically press the elastic check plate downward to open the water hole automatically. At this time, the water will flow into the water cavity of the spray arm group through the water hole and the axial guide groove in turn, and spray the washing objects through the water spray head on the surface of the spray arm group; when the spray assembly needs to be removed, just pull up the placement basket to drive the entire spray assembly to be pulled out from the upper port of the connecting pipe, which has a simple structure and easy operation; when different types of spray arm groups need to be replaced, just rotate and remove the fastening nut from the external threaded area of ​​the lower top column, and you can remove the old spray arm group mounted on the lower top column for replacement to adapt to different washing scenarios, greatly improving the user experience.

[0013] Preferably, a U-shaped limit frame matching the upper limit block is arranged on the bottom surface of the placement basket, and the U-shaped limit frame is composed of two mutually symmetrical vertical limit rods and a transverse limit rod, the vertical limit rod includes rod segment one and rod segment two, the rod segment two is located between the rod segment one and the transverse limit rod, the connection between the rod segment one and the rod segment two is smoothly transitioned through a rounded corner, the rod segments one of the two vertical limit rods are parallel to each other and the distance between them is greater than the width of the upper limit block, vertical limit grooves are arranged on the side walls on opposite sides of the upper limit block, the rod segments two of the two vertical limit rods are parallel to each other and the distance between them is adapted to the distance between the bottom surfaces of the two vertical limit grooves, and the side walls of the upper limit block are also provided with transverse limit grooves matching the transverse limit rod. During installation, the upper limit block is first placed between the two rod segments 2, and then the vertical limit slot on the limit block is aligned with the rod segment 1 and inserted along the rod segment 1 until the transverse limit rod is inserted into the transverse limit slot, and the upper limit block is installed on the placement basket. The structure is simple and the operation is convenient. The joint limit of the vertical limit rod and the transverse limit rod greatly improves the installation stability of the upper limit block.

[0014] Preferably, a sealing ring 1 is provided inside the limiting groove of the connecting pipe, and the fastening nut and the connecting pipe are sealed and connected via the sealing ring 1. The upper end of the connecting pipe is sealed with the fastening nut via the sealing ring 1, which effectively avoids leakage of washing water, ensures the flushing pressure of washing water, and improves the cleaning effect of washing.

[0015] Preferably, a sealing ring 2 is installed on the water inlet pipe connector, and the water inlet pipe connector and the connecting pipe are sealed and connected via the sealing ring 2. The lower end of the connecting pipe is sealed with the water inlet pipe connector via the sealing ring 2, which effectively avoids leakage of washing water, ensures the flushing pressure of washing water, and improves the cleaning effect of washing.

[0016] Preferably, a clamp is fixed on the bottom surface of the partition, the clamp is placed on the side of the water hole, a convex piece is arranged at the edge of the elastic check plate, a clamp hole matching the clamp is arranged on the convex piece, the clamp and the clamp hole are clamped with each other, the convex piece is installed between the partition and the water inlet pipe connector, and a water hole convex rib is arranged at the edge of the lower port of the water hole. During installation, the check plate is installed on the bottom surface of the partition through the cooperation of the clamp and the clamp hole, and is fixed by pressing the convex piece on the check plate with the water inlet pipe connector, which has a simple structure and is easy to operate. The water hole is sealed by the counteraction between the check plate and the water hole convex rib, which further improves the sealing performance.

[0017] The beneficial effects of the present invention are: simple structure and easy operation; the door body can be sealed without adding elastic sealing strips, the structure is simple and reliable, and the cost is lower; it is convenient for users to take off the cover; the locking stability is improved; it prevents water flow from being wasted due to pressure release, and the water flow pressure is well maintained, thereby improving the cleaning effect of washing; two water distribution methods can be achieved by disassembling or installing the spray assembly; different types of spray arm groups can be replaced to adapt to different washing scenes, which greatly improves the user experience; the installation stability is improved; and the sealing is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the present invention; Figure 2 is a top view of the present invention; Figure 3 yes Figure 2 Sectional view at AA in the middle; Figure 4 yes Figure 3 The enlarged view of point B in the middle; Figure 5 It is a front view of the present invention; Figure 6 yes Figure 5 Sectional view at CC; Figure 7 yes Figure 6 Enlarged view of point E in the middle; Figure 8 yes Figure 6 The enlarged view of F in the middle; Fig. 9 yes Figure 5 Sectional view at DD in the middle; Fig.10 yes Fig. 9 Enlarged view of point G in the middle.

[0019] In the figure: 1. Lower shell, 2. Upper cover, 3. Inner liner, 4. Inner door cover, 5. Inner door cover rib, 6. Rib slot, 7. Drainage rib, 8. Backflow hole, 9. Lock cavity, 10. Lock buckle through hole, 11. Lock buckle, 12. Lock tongue frame, 13. Rotating column, 14. Lock rod, 15. Lever, 16. Lever hole, 17. Handle slot, 18. Buckle body 1, 19. Buckle body 2, 20. Spring frame, 21. Lever return spring, 22. Connecting pipe, 23. Water inlet pipe connector, 24. Baffle, 25. Water hole, 26. Elastic check plate, 27. Lower top column, 28. Placement basket, 29. Upper limit block, 30. Spray arm group, 31. External thread area, 32. Fastening nut, 33. Connecting pipe limiting groove, 34. Water cavity, 35. Axial guide groove, 36. Transverse limiting rod, 37. Rod section one, 38. Rod section two, 39. Vertical limiting groove, 40. Transverse limiting groove, 41. Sealing ring one, 42. Sealing ring two, 43. Clamp, 44. Lug, 45. Clamp hole, 46. Water hole convex rib. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 In the embodiment described, a water leakage prevention structure of a cleaning machine includes a lower shell 1 and an upper cover 2, such as Figure 5 , Figure 6 and Figure 7 As shown, an inner liner 3 is fixed to the inner side of the lower shell 1, an inner door cover 4 corresponding to the inner liner 3 is fixed to the inner side of the upper cover 2, an inner door cover convex rib 5 is fixed to the bottom of the inner door cover 4, a convex rib slot 6 matching the inner door cover convex rib 5 is provided at the upper end of the inner liner 3, the inner door cover convex rib 5 and the convex rib slot 6 are plugged up and down, a drainage rib 7 is also fixed to the bottom of the inner door cover 4, the drainage rib 7 is located on the inner side of the inner door cover convex rib 5, a fitting groove matching the drainage rib 7 is provided on the inner side wall of the inner liner 3, a reflux hole 8 is provided on the inner liner 3, and the bottom of the convex rib slot 6 is connected to the inner side wall of the inner liner 3 through the reflux hole 8, as shown in FIG. Figure 2 , Figure 3 and Figure 4As shown, a lock cavity 9 is provided at the bottom of the upper cover 2, and the lock cavity 9 is located on the outside of the inner door cover 4. A lock buckle through hole 10 is provided on the bottom surface of the lock cavity 9, and a lock buckle 11 matching the lock buckle through hole 10 is fixed at the upper end of the lower shell 1. A lock tongue is installed in the lock cavity 9, one end of the lock tongue is snapped with the lock buckle 11, and the other end of the lock tongue is placed on the outer surface of the upper cover 2.

[0022] A lock tongue frame 12 is fixed inside the lock cavity 9, and the lock tongue includes a rotating column 13, which is mounted on the lock tongue frame 12 and rotatably connected thereto. A lock rod 14 and a lever 15 are provided on the rotating column 13, one end of the lock rod 14 is fixed to the side wall of the rotating column 13, and the other end of the lock rod 14 is snap-connected with the lock buckle 11, and one end of the lever 15 is fixed to the side wall of the rotating column 13. The outer surface of the upper cover 2 is provided with a lever hole 16 connected to the lock cavity 9, and the other end of the lever 15 is placed in the lever hole 16 and movably connected thereto.

[0023] A handle groove 17 is provided on the outer wall of the upper cover 2, and the lever hole 16 is located on the upper end wall of the handle groove 17. The shape of the locking rod 14 and the shape of the lever 15 are both L-shaped and are respectively arranged on opposite sides of the rotating column 13. The other end of the locking rod 14 and the other end of the lever 15 are both located below the rotating column 13, and the other end of the locking rod 14 is placed between the rotating column 13 and the lock buckle through hole 10. A buckle body 18 is fixed to the other end of the locking rod 14, and the buckle body 18 is located on the side of the locking rod 14 close to the lock buckle through hole 10. A buckle body 2 19 matching the buckle body 18 is fixed to the lock buckle 11, and the other end of the locking rod 14 is clamped with the lock buckle 11 through the cooperation of the buckle body 18 and the buckle body 2 19.

[0024] A spring frame 20 is also fixed inside the lock cavity 9, and a lever return spring 21 is installed on the spring frame 20. The lever return spring 21 is located above the lever 15, the top end of the lever return spring 21 is connected to the spring frame 20, and the bottom end of the lever return spring 21 is connected to the lever 15.

[0025] like Figure 5 , Figure 6 and Figure 8 As shown, a connecting pipe 22 is fixed on the bottom surface of the inner tank 3, the lower port of the connecting pipe 22 is located outside the inner tank 3 and a water inlet pipe connector 23 is installed thereon, a partition 24 is fixed inside the connecting pipe 22, the partition 24 is located above the water inlet pipe connector 23, a water hole 25 is provided on the partition 24, an elastic check piece 26 matching the water hole 25 is installed on the bottom surface of the partition 24, the upper port of the connecting pipe 22 is located inside the inner tank 3 and a spray assembly is installed thereon, the spray assembly and the connecting pipe 22 are plugged into each other, the partition 24 is located below the spray assembly, and a lower top column 27 matching the elastic check piece 26 is provided at the bottom of the spray assembly.

[0026] A placement basket 28 is installed inside the inner liner 3, and the placement basket 28 and the inner liner 3 are movably connected up and down. The spray assembly includes a spray arm connector, and the spray arm connector includes an upper limit block 29. The upper limit block 29 is installed on the placement basket 28. The lower top column 27 is fixed to the bottom of the upper limit block 29. A spray arm group 30 is sleeved on the lower top column 27. An external threaded area 31 is provided on the side wall of the lower top column 27. A fastening nut 32 is installed at the external threaded area 31. The spray arm group 30 is installed on the upper A connecting pipe limiting groove 33 is provided between the limiting block 29 and the fastening nut 32, and a surface of the fastening nut 32 facing the connecting pipe 22. The upper port of the connecting pipe 22 is installed in the connecting pipe limiting groove 33 and is sealed therewith. A water cavity 34 is provided inside the spray arm group 30, and an axial guide groove 35 is provided on the side wall of the lower top column 27. The axial guide groove 35 is located on the inner side of the external threaded area 31, and the water hole 25 and the water cavity 34 are connected via the axial guide groove 35.

[0027] like Figure 5 , Fig. 9 and Fig.10 As shown, a U-shaped limit frame matching the upper limit block 29 is arranged on the bottom surface of the placement basket 28, and the U-shaped limit frame is composed of two mutually symmetrical vertical limit rods and a transverse limit rod 36. The vertical limit rod includes a rod segment 1 37 and a rod segment 2 38. The rod segment 2 38 is located between the rod segment 1 37 and the transverse limit rod 36. The connection between the rod segment 1 37 and the rod segment 2 38 is smoothly transitioned through a rounded corner. The rod segments 1 37 of the two vertical limit rods are parallel to each other and the distance between them is greater than the width of the upper limit block 29. Vertical limit grooves 39 are arranged on the side walls on opposite sides of the upper limit block 29. The rod segments 2 38 of the two vertical limit rods are parallel to each other and the distance between them is adapted to the distance between the bottom surfaces of the two vertical limit grooves 39. The side walls of the upper limit block 29 are also provided with transverse limit grooves 40 matching the transverse limit rod 36.

[0028] like Figure 5 , Figure 6 and Figure 8 As shown, a sealing ring 41 is provided inside the connecting pipe limiting groove 33 , and the fastening nut 32 and the connecting pipe 22 are sealed and connected via the sealing ring 41 .

[0029] A sealing ring 242 is installed on the water inlet pipe connector 23 , and the water inlet pipe connector 23 and the connecting pipe 22 are sealed and connected via the sealing ring 242 .

[0030] A clamping head 43 is fixed on the bottom surface of the partition 24, and the clamping head 43 is placed on the side of the water hole 25. A protrusion 44 is arranged at the edge of the elastic check plate 26, and a clamping hole 45 matching the clamping head 43 is arranged on the protrusion 44. The clamping head 43 and the clamping hole 45 are clamped with each other. The protrusion 44 is installed between the partition 24 and the water inlet pipe connector 23, and a water hole rib 46 is arranged at the edge of the lower port of the water hole 25.

[0031] The self-locking principle of the upper cover: when the upper cover 2 is covered on the upper end of the lower shell 1, the lock buckle 11 passes through the lock buckle through hole 10 into the lock cavity 9, and automatically engages with the lock rod 14 to lock the upper cover 2; when the upper cover 2 needs to be removed, since the other end of the lever 15 is arranged on the upper end wall of the handle groove 17, the user can use a finger to push the other end of the lever 15 upward, thereby driving the lock rod 14 on the rotating column 13 to swing downward, so that the buckle body 18 on the other end of the lock rod 14 flips downward and disengages from the buckle body 2 19 on the lock buckle 11, so that the upper cover 2 can be unlocked, and then the upper cover 2 can be easily lifted.

[0032] Sealing principle of the upper cover: by arranging the drainage rib 7 on the inner side of the bottom of the inner door cover 4, it blocks the connecting gap between the inner door cover convex rib 5 and the convex rib slot 6 from the inside, which effectively prevents the internal washing water from rushing out from the connecting gap, and can drain the water that rushes onto the wall of the inner door cover 4 to the inner tank 3, and a very small amount of water that may flip over the drainage rib 7 and flow into the convex rib slot 6 can be drained back into the inner tank 3 through the reflux hole 8.

[0033] Self-locking water-dividing principle: when the spray assembly is inserted into the connecting pipe 22, the lower top column 27 at the bottom of the spray assembly will automatically press the elastic check piece 26 downward to open the water hole 25 automatically. At this time, the water will flow into the water cavity 34 of the spray arm group 30 through the water hole 25 and the axial guide groove 35 in turn, and spray the washing objects through the water spray head on the surface of the spray arm group 30; when the spray assembly needs to be removed, just pull up the placement basket 28 to drive the entire spray assembly to be pulled out from the upper port of the connecting pipe 22. When the spray assembly is removed, the water flowing in from the water inlet pipe connector 23 will automatically press the elastic check piece 26 onto the partition 24 and block the water hole 25 to prevent water from leaking from the water hole 25. Through such a design, users can achieve two water-dividing methods by disassembling or installing the spray assembly.

[0034] Principle of spray arm group replacement: When it is necessary to replace a different type of spray arm group 30, just rotate and remove the fastening nut 32 from the external threaded area 31 of the lower top column 27, and then remove the old spray arm group sleeved on the lower top column 27 for replacement to adapt to different washing scenarios. When the spray assembly needs to be installed on the placement basket 28, first place the upper limit block 29 between the two rod segments 2 38, then align the vertical limit groove 39 of the upper limit block 29 with the rod segment 1 37 and insert it along the rod segment 1 37 until the transverse limit rod 36 is stuck in the transverse limit groove 40, and the installation of the upper limit block 29 on the placement basket 28 is completed.

[0035] The structure of the present application can be applied to the field of dishwashers. By arranging a drainage rib 7 on the inner side of the bottom of the inner door cover 4 so as to block the connection gap between the inner door cover convex rib 5 and the convex rib slot 6 from the inside, a return hole 8 is arranged to drain a very small amount of water that may overflow the drainage rib 7 and flow into the convex rib slot 6 back into the inner tank 3, so that the dishwasher can seal the door body without adding an elastic sealing strip, thereby achieving a water leakage-proof effect.

Claims

1. A water leakage prevention structure of a cleaning machine, characterized in that: The invention comprises a lower shell (1) and an upper cover (2), wherein an inner liner (3) is fixed on the inner side of the lower shell (1), an inner door cover (4) corresponding to the inner liner (3) is fixed on the inner side of the upper cover (2), an inner door cover convex rib (5) is fixed on the bottom of the inner door cover (4), a convex rib slot (6) matching the inner door cover convex rib (5) is provided at the upper end of the inner liner (3), the inner door cover convex rib (5) and the convex rib slot (6) are plugged in up and down, a drainage rib (7) is also fixed on the bottom of the inner door cover (4), the drainage rib (7) is located on the inner side of the inner door cover convex rib (5), and a convex rib slot (6) matching the drainage rib (7) is provided on the inner side wall of the inner liner (3). ), the inner shell (3) is provided with a reflux hole (8), the bottom of the rib slot (6) is connected to the inner side wall of the inner shell (3) through the reflux hole (8), the bottom of the upper cover (2) is provided with a lock cavity (9), the lock cavity (9) is located on the outer side of the inner door cover (4), the bottom surface of the lock cavity (9) is provided with a lock buckle through hole (10), the upper end of the lower shell (1) is fixed with a lock buckle (11) matching the lock buckle through hole (10), a lock tongue is installed in the lock cavity (9), one end of the lock tongue is snap-fitted with the lock buckle (11), and the other end of the lock tongue is placed on the outer surface of the upper cover (2).

2. The water leakage prevention structure of a cleaning machine according to claim 1, characterized in that: A lock tongue frame (12) is fixed inside the lock cavity (9), and the lock tongue comprises a rotating column (13), the rotating column (13) is mounted on the lock tongue frame (12) and is rotatably connected thereto, a lock rod (14) and a lever (15) are provided on the rotating column (13), one end of the lock rod (14) is fixed to a side wall of the rotating column (13), the other end of the lock rod (14) is snap-connected to a lock buckle (11), one end of the lever (15) is fixed to the side wall of the rotating column (13), and an outer surface of the upper cover (2) is provided with a lever hole (16) which is connected to the lock cavity (9), and the other end of the lever (15) is placed in the lever hole (16) and is movably connected thereto.

3. The water leakage prevention structure of a cleaning machine according to claim 2, characterized in that: The outer wall of the upper cover (2) is provided with a handle groove (17), the lever hole (16) is located on the upper end wall of the handle groove (17), the shape of the lock rod (14) and the shape of the lever (15) are both L-shaped and are respectively arranged on opposite sides of the rotating column (13), the other end of the lock rod (14) and the other end of the lever (15) are both located below the rotating column (13), the other end of the lock rod (14) is placed between the rotating column (13) and the lock buckle through hole (10), a buckle body 1 (18) is fixed to the other end of the lock rod (14), the buckle body 1 (18) is located on a side of the lock rod (14) close to the lock buckle through hole (10), a buckle body 2 (19) matching the buckle body 1 (18) is fixed to the lock buckle (11), and the other end of the lock rod (14) is clamped with the lock buckle (11) through the cooperation of the buckle body 1 (18) and the buckle body 2 (19).

4. The water leakage prevention structure of a cleaning machine according to claim 2, characterized in that: A spring frame (20) is also fixed inside the lock cavity (9), and a lever return spring (21) is mounted on the spring frame (20). The lever return spring (21) is located above the lever (15), and the top end of the lever return spring (21) is connected to the spring frame (20), and the bottom end of the lever return spring (21) is connected to the lever (15).

5. A water leakage prevention structure for a cleaning machine according to any one of claims 1 to 4, characterized in that: A connecting pipe (22) is fixed on the bottom surface of the inner liner (3); the lower end of the connecting pipe (22) is located outside the inner liner (3) and a water inlet pipe connector (23) is mounted thereon; a partition (24) is fixed inside the connecting pipe (22); the partition (24) is located above the water inlet pipe connector (23); a water through hole (25) is provided on the partition (24); an elastic check piece (26) matching the water through hole (25) is mounted on the bottom surface of the partition (24); the upper end of the connecting pipe (22) is located inside the inner liner (3) and a spray assembly is mounted thereon; the spray assembly and the connecting pipe (22) are plugged into each other; the partition (24) is located below the spray assembly; a lower top column (27) matching the elastic check piece (26) is mounted at the bottom of the spray assembly.

6. The water leakage prevention structure of a cleaning machine according to claim 5, characterized in that: A placement basket (28) is installed inside the inner container (3), and the placement basket (28) and the inner container (3) are movably connected up and down. The spray assembly includes a spray arm connector, and the spray arm connector includes an upper limit block (29). The upper limit block (29) is installed on the placement basket (28). The lower top column (27) is fixed to the bottom of the upper limit block (29). A spray arm group (30) is sleeved on the lower top column (27). An external threaded area (31) is provided on the side wall of the lower top column (27). A fastening nut (32) is installed at the external threaded area (31). The spray arm group (30) The spray arm assembly (30) is installed between the upper limit block (29) and the fastening nut (32); a connecting pipe limiting groove (33) is provided on a surface of the fastening nut (32) facing the connecting pipe (22); an upper end of the connecting pipe (22) is installed in the connecting pipe limiting groove (33) and is sealed therewith; a water cavity (34) is provided inside the spray arm assembly (30); an axial guide groove (35) is provided on the side wall of the lower top column (27); the axial guide groove (35) is located on the inner side of the external threaded area (31); and the water through hole (25) and the water cavity (34) are connected via the axial guide groove (35).

7. The water leakage prevention structure of a cleaning machine according to claim 6, characterized in that: A U-shaped limit frame matching the upper limit block (29) is arranged on the bottom surface of the placement basket (28), the U-shaped limit frame is composed of two mutually symmetrical vertical limit rods and a horizontal limit rod (36), the vertical limit rod comprises a rod segment 1 (37) and a rod segment 2 (38), the rod segment 2 (38) is located between the rod segment 1 (37) and the horizontal limit rod (36), the connection between the rod segment 1 (37) and the rod segment 2 (38) is smoothly transitioned by a rounded corner, and the two vertical limit rods are connected to each other. The rod sections (37) of the horizontal limit rods are parallel to each other and the distance between them is greater than the width of the upper limit block (29). The side walls of the upper limit block (29) on opposite sides are provided with vertical limit grooves (39). The rod sections (38) of the two vertical limit rods are parallel to each other and the distance between them is matched with the distance between the bottom surfaces of the two vertical limit grooves (39). The side walls of the upper limit block (29) are also provided with horizontal limit grooves (40) matching the horizontal limit rods (36).

8. The water leakage prevention structure of a cleaning machine according to claim 6, characterized in that: A sealing ring 1 (41) is provided inside the connection pipe limiting groove (33), and the fastening nut (32) and the connection pipe (22) are sealed and connected via the sealing ring 1 (41). The anti-leakage structure of a cleaning machine according to claim 6 is characterized in that a second sealing ring (42) is installed on the water inlet pipe connector (23), and the water inlet pipe connector (23) and the connecting pipe (22) are sealed and connected via the second sealing ring (42).

9. The water leakage prevention structure of a cleaning machine according to claim 5, characterized in that: A clamping head (43) is fixed on the bottom surface of the partition (24), and the clamping head (43) is placed on the side of the water through hole (25). A convex piece (44) is provided at the edge of the elastic check piece (26), and a clamping hole (45) matching the clamping head (43) is provided on the convex piece (44). The clamping head (43) and the clamping hole (45) are clamped with each other. The convex piece (44) is installed between the partition (24) and the water inlet pipe connector (23), and a water through hole convex rib (46) is provided at the edge of the lower end of the water through hole (25).

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