Cleaning machine

Abstract

The cleaning machine comprises a box body, a door body and a damper, the box body is provided with a top opening, the edge of the door body is rotationally connected to the top opening and used for opening or closing the top opening, and the damper is connected between the edge of the top opening and the door body. According to the door body, the door body is installed at the top opening of the box body only through the damper and the installation sleeve, that is, in the opening process of the door body, the door body is supported on the connecting shaft only through the damper and the installation sleeve, in the door opening process, the force applied to the connecting shaft by the door body is continuously changed, the damper conducts self-adaption on the gravity of the door body through stretching and retracting, and therefore the door body can be opened. Therefore, stable control of door body damping is realized; when the door body is slowly opened or quickly opened, especially in the quick opening process, force exerted on the door body by a user is suddenly increased, and the damper is quickly self-adaptive through stretching and retracting of the damper and up-down matching of the connecting sleeve and the connecting shaft, so that the damper is protected, and the requirement of the user for quickly opening the door is met.

Description

Technical Field

[0001] The invention relates to the technical field of dishwashers, and in particular to a washing machine for washing tableware, fruits and vegetables. Background Art

[0002] The sink-type dishwasher adopts a flip-up door. In order to facilitate the flipping of the door, a damper is usually provided at the connection between the door and the open top of the sink.

[0003] For example, the applicant's prior patent ZL 202322722962.5 "Damager hinge mechanism, door box device and sink-type dishwasher" discloses a damping structure between a door body and a sink, and its damping hinge mechanism includes: a hinge base, including a mounting base and a sliding shaft arranged on the mounting base; a hinge bracket, including a sliding portion slidably connected to the sliding shaft and a pivot portion connected to the sliding portion; a pivot link, one end of the pivot link is rotatably connected to the mounting base, and the other end of the pivot link is rotatably connected to the pivot portion of the hinge bracket; a damper, one end of the damper is connected to the pivot portion of the hinge bracket, and the other end of the damper is connected to the sliding shaft; when the hinge bracket rotates relative to the mounting base to make the pivot portion approach or move away from the mounting base, the sliding shaft slides relative to the sliding portion of the hinge bracket to approach or move away from the pivot portion, so that the damper is compressed or stretched.

[0004] The above structure mainly solves the problem that the existing hinge assembly and damper are difficult to install and poorly matched. However, at the moment when the door is opened, if the opening speed is too fast, the damper may not be able to adapt to the user's sudden and rapid pressing force, causing the damper to be easily damaged, thereby affecting normal use. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a cleaning machine which can adapt to the damping process of the door body opening slowly and can meet the damping process of the door body opening quickly in view of the current status of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A cleaning machine comprises a box, a door and a damper, wherein the box has a top opening, the edge of the door is rotatably connected to the top opening and is used to open or close the top opening, the damper is connected between the edge of the top opening and the door, and the damper comprises:

[0008] a housing having a hollow interior;

[0009] A piston is disposed in the inner cavity so as to be reciprocating up and down along the inner cavity and to separate the inner cavity into a relatively independent upper cavity and a lower cavity, wherein both the upper cavity and the lower cavity are filled with liquid, and the piston is provided with a flow passage for the liquid to pass through;

[0010] A piston rod, a first end of which passes through the lower end of the housing and extends into the housing and is connected to the piston and moves synchronously with the piston, and a second end of which is located below the housing;

[0011] A first sealing member is disposed in the lower cavity and arranged near the lower end of the housing;

[0012] A sealing gasket is movably mounted on the outer periphery of the piston and is located between the first sealing member and the piston, and is used to block or open at least part of the flow passage;

[0013] an elastic structure, disposed between the first sealing member and the sealing gasket, so that the sealing gasket always maintains a tendency to move toward the piston so as to block at least part of the flow passage; and

[0014] A first elastic member is disposed in the upper cavity to keep the piston in a downward movement trend;

[0015] The damper is embedded in a mounting sleeve extending up and down, a transversely arranged connecting shaft is provided at the top opening of the box body, the lower end of the mounting sleeve is rotatably connected to the connecting shaft, the upper end of the mounting sleeve extends into the door body and is rotatably connected to the door body, and the lower end of the piston rod of the damper is against the connecting shaft.

[0016] When the door is opening, it is only supported on the connecting shaft by the damper and the mounting sleeve. During the door opening process, the force applied by the door body to the connecting shaft is constantly changing, and the damper adapts to the door weight by expansion and contraction, thereby achieving stable control of the door damping; when the door is opening slowly or quickly, especially during the rapid opening process, the force applied by the user to the door body suddenly increases, and the damper quickly adapts by its expansion and contraction, and the upper and lower coordination of the connecting sleeve and the connecting shaft, so as to protect the damper and meet the user's needs for quick door opening.

[0017] Preferably, a mounting hole corresponding to the connecting shaft is formed at the lower end of the mounting sleeve, and the mounting hole extends upward to form a long hole for the connecting shaft to slide up and down along the mounting sleeve as the damper expands and contracts, and the door body is constrained on the connecting shaft by the mounting sleeve so that it can rotate and slide up and down, and the damper, the connecting shaft and the long hole together form an adaptive structure that adjusts the damping force as the weight of the door body changes. The above structure facilitates the adaptiveness of the damper in the state of starting to open the door.

[0018] Preferably, a U-shaped mounting seat with an opening facing upward is provided at the top opening of the box body, the connecting shaft is provided in the mounting seat, the side wall of the mounting seat is also rotatably connected with a connecting arm, the upper end of the connecting arm is rotatably connected to the side wall of the mounting sleeve above it; the upper end of the mounting sleeve is rotatably connected to the door body through a mounting shaft arranged parallel to the connecting shaft. The above structure facilitates the compact and stable installation of the damper, the door body and the connecting shaft.

[0019] Preferably, the piston comprises a first section, a second section, and a third section arranged in sequence along the up-down direction, the outer peripheral wall of the first section is close to or in contact with the inner wall of the shell, the first section is provided with an opening extending axially therethrough, the diameter of the second section is smaller than that of the first section, the third section is in the shape of a cone with a large upper end and a small lower end, the flow passage is provided on the third section, the outer peripheral sleeve of the second section is provided with a sealing ring which can reciprocate along the axial direction of the second section and is in contact with the inner wall of the shell, and the sealing ring blocks part of the flow passage when it is close to the upper surface of the third section. The above structure can provide overpressure protection when a large force is applied to the damper at the moment of door opening, thereby adapting to the rapid door opening process.

[0020] Preferably, the third section is provided with a pressure relief hole and an inner flow channel extending in the axial direction, the outer peripheral wall of the third section is provided with a side flow channel extending in the axial direction, the inner flow channel and the side flow channel together constitute the flow passage, and the sealing ring blocks the upper end of the side flow channel when it is close to the upper surface of the third section. The above structure can provide overpressure protection when a large force is applied to the damper at the moment of door opening, thereby adapting to the rapid door opening process.

[0021] Preferably, the lower surface of the third section is provided with a flow guide channel that bypasses the lower port of the inner flow channel by more than 180 degrees in the circumferential direction and is connected to the lower end of one side flow channel. This structure can control the pressure by delaying the flow velocity and flow rate in the only flow channel in the overpressure protection state, thereby protecting the internal components of the damper from damage.

[0022] Preferably, the lower surface of the third section is covered with a pad having an opening corresponding to the pressure relief hole, and the sealing pad is located between the first sealing member and the pad. The elastic structure includes a first magnetic member and a second magnetic member that repel each other, the first magnetic member is arranged on the upper surface of the first sealing member, the second magnetic member is arranged on the lower surface of the sealing pad, and the pad is a metal member that attracts the second magnetic member. The above structure can make the reciprocating movement of the piston member more stable and smooth.

[0023] Preferably, the housing is provided with a lower opening, a sealing cover is provided at the lower opening to seal it, a second sealing member arranged close to the sealing cover is provided in the inner cavity, the piston rod passes through the sealing cover and the second sealing member; a guide plate is provided on the lower surface of the first sealing member, and a second elastic member is provided between the guide plate and the second sealing member to keep the second sealing member close to the sealing cover. The lower opening facilitates the assembly of various components into the housing, and the above structure is conducive to improving the sealing performance of the lower opening of the housing and preventing leakage of liquid in the inner cavity.

[0024] Preferably, the lower end of the piston rod is provided with a cap head capable of contacting the connecting shaft. This structure can increase the contact area between the piston rod and the connecting shaft and improve the damping effect.

[0025] Compared with the prior art, the advantages of the present invention are: the door body of the present invention is installed at the top opening of the box body only through the damper and the mounting sleeve, that is, the door body is supported on the connecting shaft only by the damper and the mounting sleeve during the opening process, and the force applied by the door body to the connecting shaft is constantly changing during the door opening process, and the damper adapts to the weight of the door body by expansion and contraction, thereby realizing stable control of the door body damping; when the door body is opened slowly or quickly, especially during the rapid opening process, the force applied by the user to the door body suddenly increases, and the damper quickly adapts by its expansion and contraction, and the upper and lower coordination of the connecting sleeve and the connecting shaft, so as to protect the damper and meet the user's needs for rapid door opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0027] Figure 2 for Figure 1 A partial cross-sectional view of

[0028] Figure 3 Schematic diagram of the structure of the piston in Example 1 of the present invention;

[0029] Figure 4 for Figure 3 Another angle view;

[0030] Figure 5 This is a diagram showing the coordination of the damping member, the mounting sleeve and the connecting shaft in Example 1 of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 5As shown, the cleaning machine of this embodiment includes a housing 1, a door body 2 and a damper 3. The housing 1 of this embodiment is a water tank having a top opening 11. The edge of the door body 2 is rotatably connected to the top opening 11 and is used to open or close the top opening 11. The damper 3 is connected between the edge of the top opening 11 and the door body 2.

[0034] The damper 3 of this embodiment includes a shell 31, a piston 32, a piston rod 33, a first sealing member 10, a sealing pad 34, an elastic structure 100, and a first elastic member 01. The shell 31 has a hollow inner cavity; the piston 32 is arranged in the inner cavity so as to be able to move up and down along the inner cavity and divide the inner cavity into a relatively independent upper cavity 311 and a lower cavity 312. The upper cavity 311 and the lower cavity 312 are both filled with liquid (grease in this embodiment), and the piston 32 is provided with a flow channel for the liquid to pass through; the first end of the piston rod 33 passes through the lower end of the shell 31 and extends into the shell 31 and is connected to the piston 32 and moves synchronously with the piston 32. The first sealing member 10 is disposed in the lower cavity 312 and is arranged close to the lower end of the outer casing 31; the sealing gasket 34 is movably mounted on the outer periphery of the piston 32 and is located between the first sealing member 10 and the piston 32, so as to block or open at least part of the flow passage; the elastic structure 100 is disposed between the first sealing member 10 and the sealing gasket 34, so that the sealing gasket 34 always keeps moving toward the piston 32, thereby blocking at least part of the flow passage; the first elastic member 01 (a linear spring in this embodiment) is disposed in the upper cavity 311, so that the piston 32 always keeps a tendency to move downward.

[0035] The damper 3 is embedded in a mounting sleeve 4 extending up and down. A transversely arranged connecting shaft 12 is provided at the top opening 11 of the box body 1. The lower end of the mounting sleeve 4 is rotatably connected to the connecting shaft 12. The upper end of the mounting sleeve 4 extends into the door body 2 and is rotatably connected to the door body 2. The lower end of the piston rod 33 of the damper 3 is against the connecting shaft 12.

[0036] During the opening process, the door body 2 is supported on the connecting shaft 12 only by the damper 3 and the mounting sleeve 4. During the door opening process, the force applied by the door body 2 to the connecting shaft 12 is constantly changing, and the damper 3 adapts to the gravity of the door body 2 by telescoping, thereby achieving stable control of the damping of the door body 2; when the door body 2 is opened slowly or quickly, especially during the rapid opening process, the force applied by the user to the door body 2 suddenly increases, and the damper 3 quickly adapts by its telescoping and the upper and lower coordination of the connecting sleeve and the connecting shaft 12, so as to protect the damper 3 and meet the user's needs for rapid door opening.

[0037] The lower end of the mounting sleeve 4 is provided with a mounting hole 41 corresponding to the connecting shaft 12, and the mounting hole 41 extends upward to form a long hole 411 that can allow the connecting shaft 12 to slide up and down along the mounting sleeve 4 as the damper 3 expands and contracts. The door body 2 is constrained on the connecting shaft 12 by the mounting sleeve 4 so that it can rotate and slide up and down. The damper 3, the connecting shaft 12, and the long hole 411 together form an adaptive structure that adjusts the damping force as the weight of the door body 2 changes. The above structure facilitates the adaptiveness of the damper 3 in the state of starting to open the door.

[0038] A U-shaped mounting seat 13 with an opening facing upward is provided at the top opening 11 of the water tank, a connecting shaft 12 is provided in the mounting seat 13, and a connecting arm 14 is rotatably connected to the side wall of the mounting seat 13, and the upper end of the connecting arm 14 is rotatably connected to the side wall of the mounting sleeve 4 above it; the upper end of the mounting sleeve 4 is rotatably connected to the door body 2 through a mounting shaft arranged parallel to the connecting shaft 12. The above structure facilitates the compact and stable installation of the damper 3, the door body 2, and the connecting shaft 12.

[0039] The piston 32 includes a first section 321, a second section 322, and a third section 323 arranged in sequence along the up-down direction. The outer peripheral wall of the first section 321 is close to or in contact with the inner wall of the housing 31. The first section 321 is provided with an opening 320 that penetrates along the axial direction. The diameter of the second section 322 is smaller than that of the first section 321. The third section 323 is in the shape of a cone with a large upper end and a small lower end. The flow passage is provided on the third section 323. The outer periphery of the second section 322 is sleeved with a sealing ring 35 that can reciprocate along the axial direction of the second section 322 and is in contact with the inner wall of the housing 31. The sealing ring 35 blocks part of the flow passage when it is close to the upper surface of the third section 323. The above structure can provide overpressure protection when a large force is applied to the damper 3 at the moment of door opening, thereby adapting to the rapid door opening process.

[0040] The third section 323 is provided with a pressure relief hole 324 and an inner flow channel 325 extending in the axial direction, and the outer peripheral wall of the third section 323 is provided with a side flow channel 326 extending in the axial direction. The inner flow channel 325 and the side flow channel 326 together constitute a flow passage, and the sealing ring 35 blocks the upper end of the side flow channel 326 when it is close to the upper surface of the third section 323. The above structure can provide overpressure protection when a large force is applied to the damper 3 at the moment of door opening, thereby adapting to the rapid door opening process.

[0041] The lower surface of the third section 323 is provided with a flow guide channel 327 which bypasses the lower end of the inner flow channel 325 by more than 180 degrees in the circumferential direction and is connected to the lower end of the one side flow channel 326. This structure can control the pressure by delaying the flow velocity and flow rate in the only flow channel in the overpressure protection state, thereby protecting the internal components of the damper 3 from damage.

[0042] The lower surface of the third section 323 is covered with a backing plate 36, which has an opening 361 corresponding to the pressure relief hole 324, and the sealing gasket 34 is located between the first sealing member 10 and the backing plate 36. The elastic structure 100 includes a first magnetic member 101 and a second magnetic member 102 that repel each other, the first magnetic member 101 is arranged on the upper surface of the first sealing member 10, and the second magnetic member 102 is arranged on the lower surface of the sealing gasket 34, and the backing plate 36 is a metal member that attracts the second magnetic member 102. The above structure can make the reciprocating movement of the piston 32 more stable and smooth.

[0043] The housing 31 is provided with a lower opening, and a cover 37 is provided at the lower opening to seal it. A second sealing member 20 arranged close to the cover 37 is provided in the inner cavity, and the piston rod 33 passes through the cover 37 and the second sealing member 20; a guide plate 39 is provided on the lower surface of the first sealing member 34, and a second elastic member 02 is provided between the guide plate and the second sealing member to keep the second sealing member 34 close to the cover 37. The lower opening facilitates the assembly of various components into the housing 31, and the above structure is conducive to improving the sealing performance of the lower opening of the housing 31 and preventing liquid leakage in the inner cavity.

[0044] The lower end of the piston rod 33 is provided with a cap head 38 that can contact the connecting shaft 12. This structure can increase the contact area between the piston rod 33 and the connecting shaft 12 and improve the damping effect.

[0045] When the door is opened, when the piston rod 33 is subjected to rapid and forceful pressing force, the piston rod 33 quickly drives the piston 32 to move inward, quickly squeezing the oil in the upper cavity 311 to flow to the lower cavity 312. Due to the large squeezing force, the sealing ring 35 contacts the upper surface of the third section 323 of the piston 32, sealing the side channel 326. A portion of the oil still enters the lower cavity 312 through the inner channel 325 as usual. However, at this time, the oil in the upper cavity 311 is subjected to too much squeezing force from the piston, and the inner channel 325 is completely unable to meet the oil flow demand. The oil in the upper cavity 311 overcomes the repulsive magnetic force, pushes open the sealing gasket 34, and flows from the pressure relief hole 324 to the lower cavity 312, thereby alleviating the squeezing force in the upper cavity 311, and further protecting the components inside the damper 3 from being damaged by the rapid pressing force.

[0046] The door body 2 of this embodiment is installed at the top opening 11 of the box body 1 only by the damper 3 and the mounting sleeve 4, that is, the door body 2 is supported on the connecting shaft 12 only by the damper 3 and the mounting sleeve 4 during the opening process. During the door opening process, the force applied by the door body 2 to the connecting shaft 12 is constantly changing, and the damper 3 adapts to the gravity of the door body 2 by telescoping, thereby achieving stable control of the damping of the door body 2; when the door body 2 is opened slowly or quickly, especially during the fast opening process, the force applied by the user to the door body 2 suddenly increases, and the damper 3 quickly adapts by its telescoping and the upper and lower coordination of the connecting sleeve and the connecting shaft 12 to protect the damper 3 and meet the user's needs for fast door opening.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is only that:

[0049] The elastic structure in this embodiment is a linear spring, which is elastically compressed between the first sealing member and the sealing gasket.

[0050] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising a box, a door and a damper, wherein the box has a top opening, the edge of the door is rotatably connected to the top opening and is used to open or close the top opening, and the damper is connected between the edge of the top opening and the door, characterized in that: The damper comprises a housing having a hollow interior; A piston is disposed in the inner cavity so as to be reciprocating up and down along the inner cavity and to separate the inner cavity into a relatively independent upper cavity and a lower cavity, wherein both the upper cavity and the lower cavity are filled with liquid, and the piston is provided with a flow passage for the liquid to pass through; A piston rod, a first end of which passes through the lower end of the housing and extends into the housing and is connected to the piston and moves synchronously with the piston, and a second end of which is located below the housing; A first sealing member is disposed in the lower cavity and arranged near the lower end of the housing; A sealing gasket is movably mounted on the outer periphery of the piston and is located between the first sealing member and the piston, and is used to block or open at least part of the flow passage; An elastic structure is provided between the first sealing member and the sealing gasket, so that the sealing gasket always keeps a tendency to move toward the piston so as to block at least part of the flow passage; as well as A first elastic member is disposed in the upper cavity to keep the piston moving downward; The damper is embedded in a mounting sleeve extending up and down, a transversely arranged connecting shaft is provided at the top opening of the box body, the lower end of the mounting sleeve is rotatably connected to the connecting shaft, the upper end of the mounting sleeve extends into the door body and is rotatably connected to the door body, and the lower end of the piston rod of the damper is against the connecting shaft.

2. The cleaning machine according to claim 1, characterized in that: A mounting hole corresponding to the connecting shaft is formed at the lower end of the mounting sleeve, and the mounting hole extends upward to form a long hole for the connecting shaft to slide up and down along the mounting sleeve as the damper expands and contracts. The door body is constrained on the connecting shaft so that it can rotate and slide up and down through the mounting sleeve. The damper, the connecting shaft and the long hole together form an adaptive structure that adjusts the damping force as the door body's own weight changes.

3. The cleaning machine according to claim 2, characterized in that: A U-shaped mounting seat with an opening facing upward is provided at the open top of the box body, and the connecting shaft is arranged in the mounting seat. The side wall of the mounting seat is also rotatably connected with a connecting arm, and the upper end of the connecting arm is rotatably connected to the side wall of the mounting sleeve above it; the upper end of the mounting sleeve is rotatably connected to the door body through a mounting shaft arranged parallel to the connecting shaft.

4. The cleaning machine according to any one of claims 1 to 3, characterized in that: The piston comprises a first section, a second section and a third section which are arranged in sequence along the up-down direction, the outer peripheral wall of the first section is close to or in contact with the inner wall of the outer shell, the first section is provided with an opening which passes through in the axial direction, the diameter of the second section is smaller than that of the first section, the third section is in the shape of a cone with a large upper end and a small lower end, the flow passage is provided on the third section, the outer periphery of the second section is provided with a sealing ring which can reciprocate along the axial direction of the second section and is in contact with the inner wall of the outer shell, and the sealing ring blocks part of the flow passage when it is close to the upper surface of the third section.

5. The cleaning machine according to claim 4, characterized in that: The third section is provided with a pressure relief hole and an inner flow channel which are axially continuous, and the outer peripheral wall of the third section is provided with a side flow channel which is axially continuous. The inner flow channel and the side flow channel together constitute the flow passage, and the sealing ring blocks the upper end of the side flow channel when it is close to the upper surface of the third section.

6. The cleaning machine according to claim 5, characterized in that: The lower surface of the third section is provided with a guide channel which circumferentially bypasses the lower end of the inner flow channel by more than 180 degrees and is connected with the lower end of one side flow channel.

7. The cleaning machine according to claim 6, characterized in that: The lower surface of the third section is covered with a pad, and the pad is provided with an opening corresponding to the pressure relief hole, and the sealing gasket is located between the first sealing member and the pad.

8. The cleaning machine according to claim 7, characterized in that: The elastic structure includes a first magnetic part and a second magnetic part that repel each other. The first magnetic part is arranged on the upper surface of the first sealing part, and the second magnetic part is arranged on the lower surface of the sealing gasket. The pad is a metal part that attracts the second magnetic part.

9. The cleaning machine according to any one of claims 1 to 3, characterized in that: The shell is provided with a lower end opening, and a sealing cover is provided at the lower end opening to close it. A second sealing member arranged close to the sealing cover is provided in the inner cavity, and the piston rod passes through the sealing cover and the second sealing member. A guide plate is provided on the lower surface of the first sealing member, and a second elastic member is provided between the guide plate and the second sealing member to enable the second sealing member to always be close to the sealing cover.

10. The cleaning machine according to claim 9, characterized in that: The lower end of the piston rod is provided with a cap head which can contact with the connecting shaft.

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