A dishwasher

Abstract

The present invention discloses a dishwasher, which includes a damping device, a sink and a cover plate. The two sides of the cover plate are respectively rotatably connected to the sink through hinges, and further includes a driving device for driving the hinge to rotate to open the cover plate. The driving device includes a pulley group and a driving motor. One end of the pulley group is connected to the hinge, and one end is connected to the driving motor. The damping device is arranged on the outer side wall of the sink and is slidably connected to the pulley group. The damping device provides a force for slowing down the closing speed of the cover plate to the pulley group. The dishwasher provided by the present invention realizes the automatic opening of the cover plate, improves the convenience and intelligence of the dishwasher, eliminates the need to manually lift the handle, has a damping force when closing the door, and is provided with a door lock mechanism, which can automatically detect the opening and closing of the cover plate, and can automatically control the connection or disconnection of the control circuit of the dishwasher according to the opening and closing of the cover plate. Closing the door is safer, more convenient and reliable, and improves the safety of the dishwasher.

Description

Technical Field

[0001] The present invention belongs to the field of cleaning devices, and more specifically, relates to a dishwasher. Background Art

[0002] In the prior art, the door opening and closing structure of a dishwasher has a single function. When opening the door, it requires manual pulling of the handle, which is not only aesthetically unappealing but also occupies space on the door panel. When closing the door, it uses a damping combined with a buckle structure, which is ugly in appearance and inconvenient to use. Moreover, there is no control feedback. During the operation of the dishwasher, steam and water spraying will occur. If the dishwasher door panel is not closed, it may cause injury to the user and result in a safety accident, presenting a safety hazard.

[0003] Chinese Patent with Application No. CN201410851106.2 discloses a method for controlling the opening and closing of a cover plate of a sink-type cleaning machine. The cover plate is opened or closed by a driving mechanism, and the opening and closing control method includes the following steps: 1) After the cleaning program of the sink-type cleaning machine ends, detect the temperature inside the sink body. When the temperature is at a first preset temperature value, control the driving mechanism to open the cover plate for heat dissipation and cooling; 2) Keep the cover plate in an open state for a certain period of time, and continuously detect the temperature inside the sink body. When the detected temperature drops to a second preset temperature value, control the driving mechanism to close the cover plate. Although this solution realizes the automatic opening / closing of the cover plate, in the actual process of automatic opening / closing of the cover plate, it cannot be fully opened due to the influence of the chute, and there is no control feedback for the opening / closing of the cover plate.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a dishwasher that occupies less space, has a compact structure, does not affect the overall appearance of the dishwasher, adopts an automatic control method, does not require manual operation by the user, and has a damping force when closing the door, improving the safety of use.

[0006] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is: a dishwasher includes a damping device, a sink, and a cover plate. The two sides of the cover plate are respectively rotatably connected to the sink through hinges, and further includes a driving device for driving the hinge to rotate to open the cover plate. The driving device includes a pulley group and a driving motor. One end of the pulley group is connected to the hinge, and the other end is connected to the driving motor. The damping device is arranged on the outer side wall of the sink, and the damping device is slidably connected to the pulley group. The damping device provides a force to slow down the closing speed of the cover plate to the pulley group.

[0007] Further, the damping device is connected to the outer side wall of the water tank. The damping device includes a rope fixing block, a damping bracket and a damping unit. The rope fixing block is slidably connected to the damping bracket. The damping unit is connected to the damping bracket. The rope of the pulley group is connected to the rope fixing block.

[0008] Further, the damping unit includes a piston damping rod. The piston damping rod is detachably connected to the rope fixing block. The piston damping rod restricts the sliding speed of the rope fixing block relative to the damping bracket.

[0009] Further, the pulley group is provided with at least one fixed pulley for changing the acting direction of the pulling force of the driving motor.

[0010] Further, it further includes a door closing damper for buffering the closing force of the cover plate. One end of the pulley group connected to the driving motor is simultaneously connected to the door closing damper.

[0011] Preferably, the door closing damper includes a tension spring and a tension spring adjusting plate. The pulley group is connected to the tension spring adjusting plate through the tension spring. The tension spring adjusting plate is provided with at least two connecting parts at different distances. The tension spring can be selectively connected to each connecting part of the tension spring adjusting plate.

[0012] Further, the hinge is a hinge rotating shaft. The hinge rotating shaft penetrates through the side wall of the water tank. One end is fixedly connected to the cover plate, and the other end is connected to the driving device through a hinge connecting piece.

[0013] Further, the driving device includes a left driving device and a right driving device respectively arranged on the left and right side walls of the water tank. The left and right driving devices are connected to the driving motor through a synchronous driving mechanism.

[0014] Preferably, the synchronous driving mechanism includes left and right pull rings and a pull ring connecting shaft. The left and right driving devices are respectively connected to the left and right pull rings. The pull ring connecting shaft connects the left and right pull rings and is connected to the driving motor.

[0015] Further, the pulley group includes a left pulley group and a right pulley group symmetrically arranged on the left and right sides of the water tank. The left pulley group includes an upper left pulley and a lower left pulley arranged on the left side wall of the water tank. The right pulley group is an upper right pulley and a lower right pulley arranged on the right side wall of the water tank.

[0016] Further, the cover plate is provided with a door lock mechanism. The door lock mechanism is at least one group of permanent magnets respectively arranged on the cover plate and the water tank.

[0017] Further, the water tank is provided with an opening / closing door detector. The opening / closing door detector controls the connection or disconnection of the control circuit of the dishwasher according to the opening and closing of the cover plate.

[0018] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

[0019] 1. By adopting an automatic control method, the automatic opening of the cover plate is realized, which improves the convenience and intelligence of the dishwasher and eliminates the need for manual lifting of the handle.

[0020] 2. There is a damping force when closing the door, and a door lock mechanism is provided, making the door closing safer, more convenient and reliable.

[0021] 3. It can automatically detect the opening and closing of the cover plate, and can automatically control the connection or disconnection of the control circuit of the dishwasher according to the opening and closing of the cover plate, improving the safety and intelligence of the dishwasher.

[0022] 4. It occupies a small space, has a compact structure, and does not affect the overall appearance of the dishwasher.

[0023] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure of the dishwasher of the present invention;

[0026] Figure 2 is a schematic diagram of the door opening and closing structure of the dishwasher of the present invention;

[0027] Figure 3 is an enlarged schematic diagram of part A of the door opening and closing structure of the dishwasher of the present invention.

[0028] In the figure: 1. Cover plate; 2. Permanent magnet; 3. Open / close door detector; 4. Water tank; 5. Driving motor; 6. Right pull spring adjusting plate; 61. Left pull spring adjusting plate; 7. Right pull spring; 71. Left pull spring; 8. Right pull ring; 81. Left pull ring; 9. Pull ring connecting shaft; 10. Right lower pulley; 101. Left lower pulley; 11. Right pulley group; 111. Left pulley group; 12. Right upper pulley; 121. Left upper pulley; 13. Right hinge connecting piece; 131. Left hinge connecting piece; 14. Right hinge; 141. Left hinge; 15. Right damping device; 151. Left damping device; 16. Piston damping rod; 17. Pull rope fixing block; 18. Damping device.

[0029] It should be noted that these drawings and the text description are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation mode

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] As Figures 1 to 3 shown, a dishwasher provided by the present invention is a sink 4 - type dishwasher, which can be used to wash dishes, vegetables, fruits, etc. It includes a sink 4, in which a dish rack and a fruit basket are provided for storing tableware and fruits to be washed. A cover plate 1 is provided on the top of the sink 4, and the cover plate 1 seals the sink 4 to form a washing cavity. The two sides of the cover plate 1 are respectively rotatably connected to the sink 4 through hinges, and the cover plate 1 can be opened and closed with the sink 4 through the hinges. The dishwasher also includes a driving device, which can drive the hinge to rotate. The rotation of the hinge drives the cover plate 1 to change from a closed state to an open state. The driving device includes a pulley group and a driving motor 5. One end of the pulling rope of the pulley group is connected to the hinge, and the other end is connected to the driving motor 5. A damping device 18 is connected between the two ends of the pulling rope. The damping device 18 is arranged on the outer side wall of the sink 4 and is slidably connected to the pulley group. The damping device 18 provides a force to slow down the closing speed of the cover plate 1 to the pulley group. The driving motor 5 drives the pulling rope of the pulley group, driving the hinge connected to the other end of the pulling rope to rotate.

[0034] Further, in order to prevent the driving device from occupying the side space of the dishwasher and to drive the hinge to drive the cover plate 1 to rotate with less effort, the pulley group is provided with at least one fixed pulley for changing the direction of the pulling force of the driving motor 5. Those skilled in the art can select the number and type of pulleys according to the actual arrangement position of the motor and the structure of the dishwasher. Through the specific arrangement of the pulleys, the pulling force direction of the pulling rope and the installation position of the driving motor 5 can be selected as needed.

[0035] Furthermore, the damping device 18 is connected to the outer side wall of the water tank 4. The damping device 18 includes a pulling rope fixing block 17, a damping bracket, and a damping unit. The damping unit is connected to the damping bracket. The pulling rope of the pulley group is connected to the pulling rope fixing block 17. The damping unit includes a piston damping rod 16. The piston damping rod 16 is detachably connected to the pulling rope fixing block 17. The piston damping rod 16 restricts the sliding speed of the pulling rope fixing block 17 relative to the damping bracket.

[0036] A slideway is provided on the damping bracket. The pulling rope fixing block 17 is slidably connected to the damping bracket. When the cover plate 1 is closed, the pulling rope of the pulley group drives the pulling rope fixing block 17 to slide relative to the damping bracket. When the pulling rope fixing block 17 encounters the piston damping rod 16, due to the action of the internal hydraulic pressure of the damping unit, the piston damping rod 16 applies a force to the pulling rope fixing block 17, slowing down the sliding speed of the pulling rope fixing block 17 and restricting the sliding speed of the pulling rope fixing block 17 relative to the damping bracket, thereby slowing down the moving speed of the pulling rope of the pulley group and the closing speed of the cover plate 1, achieving the function of preventing the cover plate 1 from falling rapidly.

[0037] Embodiment 1

[0038] As Figures 1 to 3 shown, in a dishwasher according to this embodiment, one end of the pulley group is connected to the hinge, and the other end is connected to the driving motor 5. The end of the pulley group connected to the driving motor 5 is also connected to a door closing damper at the same time. When the cover plate 1 is closed, the door closing damper can pull the pulley group, and the pulley group pulls the hinge, thereby generating a damping effect on the falling and closing cover plate 1 to prevent the cover plate 1 from falling rapidly.

[0039] Specifically, the door closing damper includes a tension spring and a tension spring adjusting plate. One end of the tension spring is connected to the pulley set, and the other end is connected to the tension spring adjusting plate. The lower end of the tension spring adjusting plate is fixedly connected to the dishwasher housing. At least two connecting parts with different distances are provided at the upper end of the tension spring adjusting plate. The connecting parts can be structures such as serrated hooks arranged in sequence and round holes. The tension spring can be selectively connected to each connecting part of the tension spring adjusting plate. Connecting to different connecting parts will change the stretching distance of the tension spring, thereby changing the stretching force of the tension spring. The change in the stretching force can change the closing force on the buffer cover 1. The user can set the damping force of the door closing damper according to their own situation. At the same time, due to the long-term force on the tension spring, the elasticity of the tension spring will gradually weaken over time. The user only needs to select and connect different connecting parts of the tension spring and the tension spring adjusting plate to compensate for the weakening of the elasticity of the tension spring.

[0040] Embodiment 2

[0041] As Figures 1 to 3 shown, for a dishwasher described in this embodiment, there can be two driving devices, which are divided into a left driving device and a right driving device. The left driving device is arranged on the left side wall of the dishwasher sink 4, and the right driving device is arranged on the right side wall of the dishwasher sink 4. The left and right driving devices are connected to the driving motor 5 through a synchronous driving mechanism.

[0042] Specifically, the left driving device is connected to the left pull ring 81, and the right driving device is connected to the right pull ring 8. The left pull ring 81 and the right pull ring 8 located on both sides of the dishwasher sink 4 are connected through a pull ring connecting shaft 9. The pull ring connecting shaft 9 is connected to the driving motor 5. The driving motor 5 drives the pull ring connecting shaft 9 during operation. The pull ring connecting shaft 9 drives the left pull ring 81 and the right pull ring 8 at the same time. The left pull ring 81 drives the left driving device, and the right pull ring 8 drives the right driving device, realizing that one driving motor 5 drives the left driving device and the right driving device at the same time.

[0043] Embodiment 3

[0044] As Figures 1 to 3 shown, for a dishwasher described in this embodiment, the hinge is a hinge rotating shaft. The hinge rotating shaft penetrates the side wall of the sink 4, one end is fixedly connected to the cover 1, and the other end is connected to the driving device through a hinge connecting piece.

[0045] Alternatively, this embodiment is a further limitation of the above-described Embodiment 3. The hinge includes a left hinge 141 and a right hinge 14 symmetrically arranged on the left and right sides of the cover plate 1. The left hinge 141 penetrates through the side wall of the water tank 4, with one end fixedly connected to the left side wall of the cover plate 1 and the other end fixedly connected to the left hinge connecting member 131. The right hinge 14 penetrates through the side wall of the water tank 4, with one end fixedly connected to the right side wall of the cover plate 1 and the other end fixedly connected to the right hinge connecting member 13. The pulley group includes a right pulley group 11 and a left pulley group 111 symmetrically arranged on the left and right sides of the water tank 4. The right pulley group 11 includes an upper right pulley 12 and a lower right pulley 10 provided on the right side wall of the water tank 4. The left pulley group 111 includes an upper left pulley 121 and a lower left pulley 101 provided on the left side wall of the water tank 4. One end of the right pulley group 11 is fixedly connected to the right hinge connecting member 13, and the other end is connected to the right pull ring 8. One end of the left pulley group 111 is fixedly connected to the left hinge connecting member 131, and the other end is connected to the left pull ring 81. The door-closing damper includes a left door-closing damper and a right door-closing damper. The left pull ring 81 is connected to the left spring adjusting plate 61 through a left spring 71, and the right pull ring 8 is connected to the right spring adjusting plate 6 through a right spring 7. The damping device 18 includes a right damping device 15 and a left damping device 151 symmetrically arranged on the left and right sides of the water tank 4. The right damping device 15 is arranged between the upper right pulley 12 and the lower right pulley 10, and the pull rope of the right pulley group 11 is connected to the right damping device 15. The left damping device 151 is arranged between the upper left pulley 121 and the lower left pulley 101, and the pull rope of the left pulley group 111 is connected to the left damping device 151. In the initial stage of the closing of the cover plate 1, since the left spring 71 of the left door-closing damper and the right spring 7 of the right door-closing damper have relatively small deformations in the initial stage of closing, the elastic acting forces are relatively small. In order to prevent the cover plate 1 from falling rapidly, the right damping device 15 and the left damping device 151 are added, which can prevent the cover plate 1 from falling rapidly in the initial stage of closing. In the later stage of the closing of the cover plate 1, since the left spring 71 of the left door-closing damper and the right spring 7 of the right door-closing damper have relatively large deformations in the later stage of closing, the elastic acting forces are relatively large, which can prevent the cover plate 1 from falling rapidly in the later stage of closing.

[0046] Embodiment 4

[0047] As Figures 1 to 3 shown, in a dishwasher according to this embodiment, the cover plate 1 is provided with a door lock mechanism, and the door lock mechanism is at least one set of permanent magnets 2 respectively arranged on the cover plate 1 and the water tank 4.

[0048] Specifically, at least one permanent magnet 2 is provided on the cover plate 1. When the cover plate 1 is closed, the same number of permanent magnets 2 are provided at the position of the water tank 4 corresponding to the permanent magnet 2 on the cover plate 1. When the cover plate 1 is closed, the permanent magnet 2 on the cover plate 1 and the permanent magnet 2 on the water tank 4 attract each other, thereby realizing the closing and locking of the cover plate 1 and the water tank 4.

[0049] Embodiment 5

[0050] As Figures 1 to 3 shown, in a dishwasher according to this embodiment, an opening / closing door detector 3 is provided on a water tank 4. The opening / closing door detector 3 can detect whether a cover plate 1 and the water tank 4 are closed. When the cover plate 1 and the water tank 4 are not closed, the opening / closing door detector 3 can control the disconnection of the control circuit of the dishwasher. When the cover plate 1 and the water tank 4 are closed, the opening / closing door detector 3 can control the connection of the control circuit of the dishwasher. By installing the opening / closing door detector 3, it can be avoided that during the operation of the dishwasher, steam and water spraying may occur. If the cover plate of the dishwasher is not closed, it may hurt the user, causing a safety accident and potential safety hazards.

[0051] The above are only preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the technical solution scope of the present invention, may make some changes or modifications to the above-mentioned technical content to obtain equivalent embodiments with equivalent changes. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A dishwasher, comprising a damping device, a sink, and a cover plate provided on top of the sink, characterized in that: Both sides of the cover plate are respectively rotatably connected to the water tank through hinges, and further includes a driving device for driving the hinges to rotate to open the cover plate. The driving device includes a pulley group and a driving motor. One end of the pulling rope of the pulley group is connected to the hinge, and the other end is connected to the driving motor; The damping device is arranged on the outer side wall of the water tank and includes: A damping bracket; A damping unit, connected to the damping bracket, including a piston damping rod; A pulling rope fixing block, the two ends of the pulling rope are connected to the pulling rope fixing block, and the pulling rope fixing block is slidably connected to the damping bracket; When the cover plate is closed, the pulling rope drives the pulling rope fixing block to slide in the direction close to the damping unit. The pulling rope fixing block slides to abut against the piston damping rod and pushes the piston damping rod. By the action of the internal hydraulic pressure of the damping unit, the speed of the pulling rope fixing block sliding relative to the damping bracket is limited, and the closing speed of the cover plate is slowed down.

2. The dishwasher according to claim 1, characterized in that: The piston damping rod and the pulling rope fixing block are detachably connected.

3. The dishwasher according to claim 1, characterized in that: At least one fixed pulley is provided in the pulley group for changing the direction of the pulling force of the driving motor.

4. The dishwasher according to claim 1, characterized in that: It further includes a door closing damper for buffering the closing force of the cover plate. One end of the pulley group connected to the driving motor is simultaneously connected to the door closing damper.

5. The dishwasher according to claim 4, characterized in that: The door closing damper includes a tension spring and a tension spring adjusting plate. The pulley group is connected to the tension spring adjusting plate through the tension spring. The tension spring adjusting plate is provided with at least two connecting parts at different distances, and the tension spring can be selectively connected to each connecting part of the tension spring adjusting plate.

6. The dishwasher according to claim 1, characterized in that: The hinge is a hinge rotating shaft, the hinge rotating shaft penetrates through the side wall of the water tank, one end is fixedly connected to the cover plate, and the other end is connected to the driving device through a hinge connecting piece.

7. The dishwasher according to claim 1, characterized in that: The driving device includes a left driving device and a right driving device respectively arranged on the left and right side walls of the water tank. The left and right driving devices are connected to the driving motor through a synchronous driving mechanism.

8. The dishwasher according to claim 7, characterized in that: The synchronous driving mechanism includes left and right pull rings and a pull ring connecting shaft. The left and right driving devices are respectively connected to the left and right pull rings, and the pull ring connecting shaft connects the left and right pull rings and is connected to the driving motor.

9. The dishwasher according to claim 1, characterized in that: The pulley group includes a left pulley group and a right pulley group symmetrically arranged on the left and right sides of the water tank. The left pulley group includes an upper left pulley and a lower left pulley arranged on the left side wall of the water tank. The right pulley group is an upper right pulley and a lower right pulley arranged on the right side wall of the water tank.

10. The dishwasher according to claim 1, characterized in that: The cover plate is provided with a door lock mechanism, and the door lock mechanism is at least one group of permanent magnets respectively arranged on the cover plate and the water tank.

11. The dishwasher according to any one of claims 1 - 10, characterized in that: The water tank is provided with an open / close door detector, and the open / close door detector controls the connection or disconnection of the control circuit of the dishwasher according to the opening and closing of the cover plate.

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