dishwasher

Abstract

To provide an easily-usable dishwasher capable of providing an easily-usable door opening / closing mechanism.SOLUTION: A dishwasher includes a housing, a washing tank provided in the housing, for storing an object to be washed, an opening provided in the washing tank, and multiple doors for blocking the opening. When the opening is blocked, a first door in the multiple doors is closed so as to cover a second door, and a part of an inside face of the first door is positioned over an upper end of the second door.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to dishwashers. [Background technology]

[0002] Patent Document 1 discloses a dishwasher with a door that pivots up and down. This dishwasher includes a washing tub that stores dishes, an opening in the washing tub, multiple doors that close the opening, and a linking mechanism that links the other doors when one of the multiple doors is opened or closed. The multiple doors include an upper door and a lower door that open and close up and down. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-219083 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-263378 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure relates to dishwashers. [Means for solving the problem]

[0005] The dishwasher according to the present disclosure includes a housing, a washing tub provided in the housing for accommodating items to be washed, an opening provided in the washing tub, and a plurality of doors for closing the opening. The plurality of doors include a first door that rotates upward to open and a second door that rotates downward to open, When the opening is blocked , the first door is The door can be closed to cover the two doors. , th 1 door protrudes from the inner surface and blocks part of the opening. It has an inner occlusion ,door Closure of situation In , th 2 doors and Side blocking section Open The entire mouth is closed The contact area between the second door and the inner blocking part is covered by the first door. do. [Effects of the Invention]

[0006] The dishwasher of the present disclosure can provide a door opening and closing mechanism that is easy to use. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic perspective view of a dishwasher with the door closed according to an embodiment of the present invention; [Figure 2] 1 is a schematic perspective view of a dishwasher with the door open according to an embodiment of the present invention; [Figure 3] 1 is a schematic front view of a dishwasher with the door open according to an embodiment of the present invention; [Figure 4] 1 is a schematic perspective view of a dishwasher with the door open, looking up at the door 4 from below. [Figure 5] Schematic perspective view of the bottom of the dishwasher with the door open. [Figure 6] (a) A schematic side view of the dishwasher with the door closed and the side cover of the housing removed to hide the inner closure. (b) A schematic side view of the dishwasher with the door open and the side cover of the housing removed to hide the inner closure. [Figure 7] (a) Schematic cross-sectional side view of the first door when the opening / closing lever is not operated. (b) Schematic cross-sectional side view of the first door when the opening / closing lever is operated. [Figure 8] Schematic front view of the first door with the surface cover removed and the door in the open position [Figure 9] (a) An enlarged view of a portion cut out from frame X shown in FIG. 6(a). (b) An enlarged view of a portion cut out from frame Y shown in FIG. 6(b). [Figure 10] A functional configuration diagram of a control unit for controlling the dishwasher according to the first embodiment. [Figure 11] Side view of a dishwasher with the door closed and the side cover removed [Figure 12] A side view of the dishwasher with the side cover removed when the door is in the open position and the opening is small. [Figure 13] A side view of the dishwasher with the side cover removed when the door is fully open. [Figure 14]Side view of a dishwasher with the door open and the side cover removed [Figure 15] A side view of the dishwasher with the door just before it is fully opened, showing an enlarged view of the first support member and its vicinity. [Figure 16] (a) Cross-sectional view of the inner contact part of the door when the door is closed. (b) Cross-sectional view of the tip of the second door when the door is open. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) When the inventors first came up with the idea for the present disclosure, conventional door configurations with upper and lower doors used waterproof seals with poor soundproofing performance on the outer surface of the main body, which did not provide sufficient protection against sound leakage during washing. The inventors then discovered a problem: it was necessary to improve protection against sound leakage while also taking measures against water leakage and dripping. To solve this problem, the inventors came up with the subject matter of the present disclosure.

[0009] Therefore, the present disclosure provides a dishwasher that can provide a user-friendly door opening and closing mechanism.

[0010] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art.

[0011] The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0012] (Embodiment) The best mode of the present embodiment will be described below with reference to FIGS.

[0013] [Overall configuration] FIG. 1 shows a dishwasher according to a first embodiment of the present invention, which is a freestanding tabletop dishwasher.

[0014] Fig. 1 is a perspective view of the dishwasher with the door closed, Fig. 2 is a perspective view of the dishwasher with the door open in embodiment 1, and Fig. 3 is a front view of the dishwasher in the state shown in Fig. 2.

[0015] In the first embodiment, the dishwasher is faced to the front, and the front side from the user's perspective is referred to as the front direction, and the rear side is referred to as the rear direction, as shown in the drawings. In the following description, the upper surface of the washing tub 3 of the dishwasher is referred to as the top, and the opposite side is referred to as the bottom, and the right side of the door 4 is referred to as the right side, and the left side is referred to as the left side, as seen from the front.

[0016] As shown in Figures 1 to 3, dishwasher 1 has a housing 2, a washing tub 3 provided in housing 2, an opening 5 in front of washing tub 3, and a door 4 for opening and closing opening 5. Door 4 is made up of multiple doors. Specifically, in this embodiment, it has a first door 4a and a second door 4b.

[0017] The door 4 can be opened and closed by the user gripping an opening / closing operation lever 8. To make it easier to grip the opening / closing operation lever 8, a door-lower recess 11 is provided directly below the opening / closing operation lever 8 located at the bottom end of the door 4. An operation display unit 12 is also provided on one side of the door-lower recess 11. can be done.

[0018] By providing the operation display unit 12 directly below the opening / closing operation lever 8, the front of the door 4 has a neat design. The operation display unit 12 is equipped with various button switches, and the user can open the door by touching or pressing a specific part of each switch, via the control unit 30 (described below). There is also a panel or LED lamp for displaying the current status and the button that has been pressed. The operation display unit 12 can also be used to set the dishwasher's operating operations, such as the wash course and drying time. Of course, the operation display unit may be an electrostatic touch type such as a touch panel, rather than a button switch.

[0019] Dishwasher 1 has a water tank 13 at the bottom that stores water for washing. Water tank 13 has a tank lid 14 on the top surface of the tank protrusion so that the user can directly add water. Because tank lid 14 rotates upward, there is no need to pull out the water tank 13 when pouring water into it; water can be poured simply by opening tank lid 14.

[0020] Dishwasher 1 also has a rotatable washing nozzle 6 for spraying washing water inside housing 2, and housing 2 has a dish basket 9 for placing dishes therein.

[0021] The dish basket is equipped with numerous support pins of various shapes, allowing bowls of various shapes to be placed on it. In this embodiment, the dishwasher 1 has a dish basket 9 for placing dishes, bowls, cups, etc., as well as an upper dish basket shelf 10 for placing light dishes and small items.

[0022] The washing nozzle 6 sprays washing water onto the items to be washed, such as dishes placed on the dish basket 9 and the dish basket upper shelf 10, to wash the items. At this time, the washing nozzle 6 is positioned so that it sprays washing water mainly from below to above the housing 2 to wash the items to be washed.

[0023] When the cleaning process is completed, the cleaning water is drained outside the machine by a drain pump provided at the bottom of the housing 2.

[0024] The housing 2 is supported by a frame. The washing water in the housing 2 is heated by a heater 31, sucked by a washing pump 32 through a food residue filter installed at the drain outlet, and then pressure-fed to the washing nozzle 6, where it is sprayed from the outlet onto the dishes and circulated. This washes the dishes.

[0025] A tower nozzle 7 is also provided on the inner surface of the housing 2, particularly on the inner surface near the rear of the dish basket 9 in this embodiment. Like the washing nozzle 6, it sprays washing water to wash items such as dishes placed on it.

[0026] FIG. 4 is a perspective view of dishwasher 1 when door 4 is open, looking up at door 4 from below. Door 4 has an opening / closing lever 8 at its lower end. Door 4 also has a water guide plate 41 extending left and right on the inner surface of door 4 at the front side in FIG. 4. Water guide plate 41 is fixed at its rear end as shown in FIG. 4, forming an axis, and its front end hangs down due to its own weight. Because the front end is not fixed, it is configured to move freely depending on the rotation position of door 4 and its own weight. The front end forms a slope downward toward the front, which guides water droplets that have run down from the inner surface of door 4 into housing 2. This prevents water droplets that have adhered to the inner surface of door 4 after washing from dripping from the tip of door 4 and falling outside of dishwasher 1.

[0027] The opening 5 is configured to be opened and closed by the door 4. The door 4 has a packing that seals the opening 5 watertight. The door 4 is configured by a door body divided into two parts, upper and lower, and the upper It includes a first door 4a located at the top and a second door 4b located at the bottom. The door 4 is configured to be reversibly opened and closed by a door opening and closing mechanism described later. The first door 4a is in a substantially upright position in the closed state of the door 4 shown in FIG. 6(a), and in a substantially horizontal position in the open state of the door 4 shown in FIG. 6(b). The second door 4b is in a substantially upright position in the closed state of the door 4 shown in FIG. 6(a), and in a substantially horizontal position in the open state of the door 4 shown in FIG. 6(b). In the fully open state where the door 4 is fully open, the first door 4a is located above the second door 4b, and the first door 4a and the second door 4b are in a substantially horizontal position.

[0028] FIG. 10 shows the functional configuration in the vicinity of the control unit 30 for controlling the dishwasher 1 in the first embodiment. The control unit 30 is realized by hardware such as a microcomputer, a microcontroller, and an integrated circuit.

[0029] The control unit 30 includes a process control unit 33, a door opening and closing detection unit 48, and the like. These configurations are realized hardware-wise by the CPU, memory, and other LSIs of an arbitrary computer, and software-wise by a program loaded into the memory, etc. Here, functional blocks realized by their cooperation are depicted. Therefore, it is understood by those skilled in the art that these functional blocks can be realized in various forms such as only by hardware or a combination of hardware and software.

[0030] [Latch interlocking mechanism when opening and closing the door] The door 4 has a configuration that can be opened and closed by the user gripping the movable opening and closing operation lever 8. The opening and closing operation lever 8 is configured to be interlocked with a latch 42 and an interlocking means 50.

[0031] FIG. 4 is a perspective view of the dishwasher 1 when the door 4 is open, looking up at the door 4 from below, and FIG. 5 is a perspective view of the lower half of the dishwasher 1 when the door 4 is open. As shown in FIG. 4, the opening and closing operation lever 8 provided at the lower end of the first door 4a is interlocked with the latches 42 provided at both the left and right ends of the inner surface of the first door 4a.

[0032] 1, this latch 42 engages with latch engagement grooves 43 provided on both ends near the opening 5 of the housing 2, as shown in FIG. 5. At this time, the door 4 remains closed, and the door open / close detection unit 48 detects that the door 4 is closed, causing the control unit 30 to drive the cleaning pump 32 and the heater 31.

[0033] When the user grasps the opening / closing operation lever 8 and applies force toward the user while the door 4 is closed, the latch 42 also rotates in conjunction with the opening / closing operation, releasing the closed state of the door 4. At this time, the door opening / closing detection unit 48 detects that the door 4 has been released from the closed state, and the control unit 30 stops the washing pump 32 and the heater 31. The operation display unit 12 also displays that the door 4 has been opened.

[0034] Fig. 6(a) is a side view of the dishwasher 1 with the door 4 in a closed state, and Fig. 6(b) is a side view of the dishwasher 1 with the door 4 in an open state. In Fig. 6, the side cover of the housing 2 has been removed to reveal the internal structure of the side of the housing. Fig. 7(a) is a simplified cross-sectional side view of the first door 4a in the state shown in Fig. 6(a), and Fig. 7(b) is a simplified cross-sectional side view of the first door 4a in the state shown in Fig. 6(b). Fig. 8, like Figs. 6(a) and 7(a), is a schematic front view of the first door 4a with the surface cover removed when the door 4 is in an open state.

[0035] The interlocking operation of the opening / closing operation lever 8 and the latch 42 will be described below by tracing the movement from FIG. 7(a) to FIG. 7(b).

[0036] When the user grasps the opening / closing operation lever 8 and pulls it toward the user, the upper end of the opening / closing operation lever 8 comes into contact with the lever connecting plate 46 provided in the center of the lower side of the first door 4a directly above the opening / closing operation lever 8, and the lever connecting plate 46 is lifted upward. The upper end of the plate 46 pushes up the metal plate 45 extending in the left-right direction on the first door 4a. At this time, the bent portion of the metal plate 45, which is bent in a direction approximately perpendicular to the first door 4a, is pushed up by the upper end of the lever connecting plate 46, causing the metal plate 45 to rotate towards the front side.

[0037] Since latches 42 are attached to both ends of the metal plate 45, when the metal plate 45 rotates, the latch 42 rotates toward the front side at the same time, and the hook-shaped tip hook portion 47 of the latch 42 is retracted into the first door 4a.

[0038] When the door 4 is in the closed state (Fig. 7(a)), the hook-shaped tip hook portion 47 of the latch 42 is engaged with the latch engagement groove 43. Therefore, when the opening / closing operation lever 8 is pulled toward the front while the door 4 is in the closed state (Fig. 7(b)), the tip hook portion 47 is retracted into the first door 4a and is released from engagement with the latch engagement groove 43, thereby releasing the door 4 from its closed state.

[0039] Furthermore, the lower end of a latch connection spring 44 is connected to the upper tip of the latch 42 opposite the tip hook portion 47, and the upper end of the latch connection spring 44 is fixed inside the first door 4a, thereby biasing the latch 42 toward the first door 4a. When the opening / closing operation lever 8 is pulled, the tip of the latch 42 on the side to which the latch connection spring 44 is connected rotates downward, so that the latch connection spring 44 is pulled downward and becomes extended (FIG. 7(b)). When the user releases the latch connection spring 44 from its extended state, an elastic force acts in the direction in which the pulled latch connection spring 44 returns to its original position, and the opening / closing operation lever 8 returns to its original position.

[0040] Specifically, when the latch connecting spring 44 is in an extended state due to the rotation of the latch 42 and the user releases the opening / closing operation lever 8, the latch connecting spring 44 contracts and returns to its original length. Then, as the latch connecting spring 44 contracts, the metal plate 45 and the latch 42 rotate and return to their original positions, so that the lever connecting plate 46 and the opening / closing operation lever 8 are also pushed back to their original positions.

[0041] Furthermore, even when the door 4 is in the middle of pivoting, if the opening / closing operation lever 8 is not being operated, the latch 42 is urged by the spring in a moderately extended state, and the opening / closing operation lever 8 is maintained in a state where it is pressed downward by the lever connecting plate 46 as shown in FIG. 7(a). When the door 4 is in a closed state and the opening / closing operation lever 8 is not being operated, the tip hook portion 47 of the latch 42 and the latch engagement groove 43 fit together, and the door 4 is maintained in a closed state.

[0042] Next, the configuration of the door open / close detection unit 48 will be described. Fig. 9(a) is an enlarged view of the frame X shown in Fig. 6(a), which shows the door 4 in an open state. Fig. 9(b) is an enlarged view of the frame X shown in Fig. 6(b), which shows the door 4 in an open state. The area surrounded by an ellipse in Figs. 9(a) and 9(b) is the door open / close detection unit 48.

[0043] The door open / close detection unit 48 provided on both side surfaces of the housing 2 includes a switch lever 481 , a switch lever plate 482 , and a microswitch 483 .

[0044] The switch lever 481 is provided at a position where it abuts the tip hook portion 47 of the latch 42 that is fitted into the latch engagement groove 43 when the door 4 is in the closed state. The switch lever 481 has a switch lever plate 482 at the tip opposite to the side that abuts the tip hook portion 47. When the tip hook portion 47 of the latch 42 and the latch engagement groove 43 fit together and the switch lever 481 is pushed up by the abutting tip hook portion 47, the switch lever plate 482 rotates around the switch lever rotation shaft 484. A microswitch 483 is provided below the switch lever plate 482, and when the microswitch 483 is pressed by the rotated switch lever plate 482, the microswitch 483 is turned ON, and the control unit 30 detects that the door 4 is in the closed state. In this way, when the door 4 is in the closed state and the microswitch 48 Figure 9(a) shows the state where 3 is pressed.

[0045] When the closed state of door 4 is detected in this way, the control unit 30 issues a command to turn on the cleaning pump 32 and heater 31, as shown in the functional configuration diagram of Fig. 10. When a command to start cleaning is issued in this state, cleaning water is sent from the cleaning pump 32 to the cleaning nozzle 6 and tower nozzle 7, and the cleaning water is sprayed from each nozzle. At this time, the operation display unit 12 may also display or notify that the door 4 is closed and that operation and cleaning are possible.

[0046] Conversely, when the opening / closing operation lever 8 is pulled out while the door 4 is closed, the hook-shaped tip hook portion 47 of the latch 42 is retracted into the first door 4a. Then, the hook-shaped tip hook portion 47 moves away from the switch lever 481, and the switch lever 481 and switch lever plate 482, which had been rotating, return to their original positions, with the switch lever rotation shaft 484 as the axis. As a result, the microswitch 483, which had been pressed by the switch lever plate 482, returns to the state before it was pressed, and the microswitch 483 becomes OFF, so the control unit 30 detects that the door 4 is in the open state. Thus, the state in which the door 4 is in the open state and the microswitch 483 is not pressed is shown in Figure 9(b).

[0047] When the open state of door 4 is detected in this way, as shown in the functional configuration diagram of Fig. 10, control unit 30 issues a command to turn off wash pump 32 and heater 31. Then, the supply of wash water to wash nozzle 6 and tower nozzle 7 is stopped, and spraying of wash water from each nozzle is interrupted. Therefore, when a user operates opening / closing lever 8 to open door 4, spraying of wash water is stopped even if a wash is in progress, preventing an accident such as water spraying from opening 5 of dishwasher 1 and getting the user wet. At this time, operation display unit 12 may also display or notify that door 4 is open and that operation and washing are not possible.

[0048] [Door interlocking mechanism 1 (link) when opening and closing the door] The door 4 is composed of a door body divided into two parts, a first door 4a that is positioned at the top when closed, and a second door 4b that is positioned at the bottom when closed. When the door begins to open, the first door 4a rotates upward toward the back, and when the door is fully opened, the first door 4a is supported so that it is horizontal and above the top surface of the housing 2. When the door begins to open, the second door 4b rotates downward toward the front, and when the door is fully opened, the second door 4b rotates approximately 90° to a position roughly aligned with the dish basket 9 inside the housing 2 in a side view, and is supported so that the second door 4b is horizontal. This opening and closing mechanism allows the first door 4a and the second door 4b to open and close reversibly.

[0049] FIG. 14 is a side view of dishwasher 1 when door 4 is open. In FIG. 14, the side cover of housing 2 has been removed to reveal the internal configuration of the side of the housing. FIG. 11 is a side view of dishwasher 1 when door 4 is closed. FIG. 12 is a side view of dishwasher 1 when door 4 is in the middle of being opened or closed, with the door only slightly opened. FIG. 13 is a side view of dishwasher 1 when door 4 is in the middle of being opened or closed, with the door only slightly opened. As with FIG. 14, FIGS. 11 to 13 also show the internal configuration of the side of the housing when the side cover of housing 2 has been removed. Below, the configuration that realizes the interlocking mechanism when door 4 is opened and closed will be described mainly using FIG. 14.

[0050] As shown in the figure, when the door 4 is open, the first door 4a is in a substantially horizontal position and is rotatably supported by a first support member 51. The first support member 51 is curved in a U-shape, with one end of the U fixed to the first support shaft 55 and the other end fixed to the inner surface of the first door 4a.

[0051] The second support member 53 is fixed to the housing 2 and remains stationary even when the door 4 is rotated. Therefore, the second support member 53 rotatably supports the multiple support members and biases the support members and the housing 2. The second support member 53 has a shape that extends downward from above on both side surfaces of the housing, and curves toward the front from the middle of the lower part.

[0052] The first support member 51 is rotatably supported relative to the second support member 53 by a first support shaft 55 provided at the upper end of the second support member 53 .

[0053] As shown in the figure, when the door 4 is open, the second door 4b is in a substantially horizontal position and is rotatably supported by a third support member 54. The third support member 54 is formed in a substantially fan shape, with its central portion fixed to the fourth support shaft 58 and its arc portion rotating. The front end of the arc is fixed to the second door 4b.

[0054] The second support shaft 56 is provided at the curved lower end of the second support member 53 fixed to the housing 2. Therefore, the third support member 54 is also supported by the second support member 53 so as to be rotatable relative to the second support member 53.

[0055] The first support member 51 that supports the first door 4a and the third support member 54 that supports the second door 4b are supported not only by the second support member 53 but also by the link member 52. The link member 52 has a shape that extends from above to below on both side surfaces of the housing. A third support shaft 57 is provided at the upper end, and the first support member 51 is supported coaxially. A fourth support shaft 58 is provided at the lower end, and the third support member 54 is supported coaxially. The fourth support shaft 58 supports the rear end of the third support member 54, opposite the end that is fixed to the second door 4b.

[0056] With this configuration, when a user pulls the opening / closing operation lever 8 to release the closed state and attempt to open the first door 4a, the first support member 51 first begins to rotate upward together with the first door 4a, starting from the first support shaft 55 (FIG. 12). Then, as the first support member 51 moves upward, the link member 52, which is coaxially supported with the first support member 51 by the third support shaft 57, is lifted upward (FIG. 13). The lower end of the lifted link member 52 then lifts upward the rear end of the third support member 54, which is coaxially supported with the link member 52 by the second support shaft 56. Then, the front end of the third support member 54 is rotated forward together with the second door 4b, starting from the fourth support shaft 58 (FIG. 14). In this way, when the first door 4a opens, the second door 4b opens in conjunction with it.

[0057] The side surface of the housing 2 has a second rotation stopper 63, which is a flat plate arranged approximately horizontally at the lower end on the front side in a side view. The second rotation stopper 63 is provided at a position where it comes into contact with the end of the rotated third support member 54 opposite the end to which the second door 4b is joined when the second door 4b is in a completely open state where it is approximately horizontal. When the third support member 54 comes into contact with the second rotation stopper 63, the second rotation stopper 63 acts as a stopper, and the third support member 54 does not rotate any further in the opening direction.

[0058] Conversely, when returning the door 4 from the open state to the closed state, the second door 4b is also configured to close in conjunction with the first door 4a when the first door 4a is closed. Specifically, when attempting to close the first door 4a, first, the first support member 51 starts to rotate downward together with the first door 4a, starting from the first support shaft 55 (Fig. 13). Then, as the first support member 51 moves downward, the link member 52, which is supported coaxially with the first support member 51 by the third support shaft 57, is moved downward (Fig. 13). Subsequently, the lower end of the lowered link member 52 moves downward the rear end of the third support member 54, which is supported coaxially with the link member 52 by the second support shaft 56. Then, the front end of the third support member 54 is rotated toward the rear together with the second door 4b, starting from the fourth support shaft 58. (Fig. 12) In this way, when the first door 4a is opened, the second door 4b is opened in conjunction with it.

[0059] When the first door 4a and the second door 4b are rotated to the closed state as shown in FIG. 11, the tip hook portion 47 of the latch 42 and the latch engagement groove 43 fit together, and the door 4 is maintained in the closed state.

[0060] Furthermore, the link member 52 has a first spring 59 and a third spring 61. The link member 52 extends in the vertical direction and has one protruding portion each in the front and rear directions in FIG. 11. The lower end of the first spring 59 is connected to the rear protruding portion. The upper end of the first spring 59 is connected to the first support member 51, and in the half-open state as shown in FIG. 13, the elastic force of the first spring 59 balances with the weight of the first door 4a, bringing it to a stopped state.

[0061] [Door interlocking mechanism 2 when opening and closing the door (spring)] Additionally, the lower end of the third spring 61 is connected to the protruding portion on the front side of the link member 52, and the upper end of the third spring 61 is connected to a part of the side surface of the housing 2. In the half-open state as shown in FIG. 13, the elastic force of the third spring 61 is balanced with the weight of the first door 4a, and the door comes to a stop.

[0062] With this configuration, when the door 4 is in the closed state, the first spring 59 and the third spring 61 are in an extended state ( FIG. 11 ). Therefore, when the door 4 is in the closed state, if a user pulls the opening / closing operation lever 8 to release the closed state, and then opens the first door 4a and releases it, a force is applied to the two springs in a contracting direction, pulling the first door 4a upward and starting to rotate upward ( FIG. 12 ). When the elastic force of the springs causes the door to rotate to a half-open state where the door is fully opened as shown in FIG. 13 , the elastic force of the first spring 59 and the third spring 61 balances with the weight of the first door 4a, resulting in a stable state, and the upward rotation of the door 4 stops midway through opening at the position shown in FIG. 13 ( FIG. 13 ). To open the door further, the assistance provided by the elastic force of the first spring 59 and the third spring 61 becomes smaller, so the user must again touch the door 4 and apply a direct force. 13, the front end of the third support member 54, which has been rotated, comes into contact with the second rotation stopper 63 provided at the bottom end of the second support member 53, physically stopping the rotation of the link member 52 and the first support member 51 and disabling further rotation of the door 4. At this time, the opening 5 is in a completely open state, and the stopping position of the door 4 at this time is configured so that the first door 4a and the second door 4b are in a position that is approximately horizontal (FIG. 14).

[0063] When door 4 is opened, if the door is rotated upward all the way to the fully open position in one go, the rotation of door 4 is physically stopped by second rotation stopper 63 when first door 4a is rotated all the way up. As a result, the dishes placed in dish baskets 9 and 10 are subjected to an impact when the door stops, causing the dishes to come into contact with each other, creating a clattering noise and potentially damaging the dishes. On the other hand, if the upward rotation of door 4 is stopped by the elastic force of the spring while door 4 is halfway open, the impact on the dishes placed in dish baskets 9 and 10 is mitigated compared to the former case, and contact between dishes can be prevented.

[0064] Furthermore, when the door 4 is in a closed state, if the user pulls the opening / closing operation lever 8 to release the closed state, and then the user continues to rotate the first door 4a upward without releasing the hand that is holding it open, the door 4 can be rotated in one go to the fully open state in which it is in an approximately horizontal position as shown in Figure 14, without stopping the rotation at the position shown in Figure 13.

[0065] Conversely, when the door 4 is returned from the open state to the closed state, the elastic force of the spring acts to close the door 4. Specifically, when a force is applied in the direction of closing the door 4 from the open state shown in Figure 14, the first door 4a rotates downward with the help of its own weight. If a user applies a light force in the direction of the door 4 and then immediately releases their hand, the door 4 stops rotating in the position shown in Figure 13. This occurs because the elastic force of the first spring 59 and the third spring 61 balances the weight of the first door 4a, creating a stable state. At the position shown in Figure 13, the downward rotation of the door 4 stops midway through closing. To further close the door, the first door 4a is rotated downward. At this time, the first support member 51 and the coaxially supported link member 52 rotate downward, causing the first spring 59 and the third spring 61 to also stretch downward. Because the springs are thus in an extended state, the user must apply force by hand to press down on the door 4, which repels the door 4 in the opening direction due to its elastic force, to close it. When the first door 4a and the second door 4b rotate downward and reach the closed position shown in Figure 11, the tip hook 47 of the latch 42 engages with the latch engagement groove 43, maintaining the door 4 in the closed state. At this time, the opening 5 is in a completely closed state, and the stopping position of the door 4 at this time is configured so that the first door 4a and the second door 4b are positioned substantially vertically.

[0066] When closing the door 4, if the door rotates downward all the way to the completely closed position in one go, and if for some reason an unintentional force in the closing direction is applied, and a user's hand or finger is directly below the path of the first door 4a's rotation, an accident could occur in which the user's finger becomes pinched between the first door 4a and the second door 4b. Furthermore, due to the weight of the first door 4a, there is a risk of injury to the pinched finger. On the other hand, if the downward rotation of the door 4 is stopped midway through closing due to the elastic force of the spring, the door is less likely to hit the user's finger, and even if the user's finger does hit the door, the impact is reduced compared to the former case, preventing accidents and injuries to the user.

[0067] Furthermore, when the user intentionally closes door 4 while door 4 is in the open state, if the user rotates first door 4a downward without releasing the grip, the rotation can be rotated in one go to the fully closed state in which door 4 is in an approximately vertical position as shown in Figure 11 without stopping at the position shown in Figure 13.

[0068] 13, when door 4 is stopped in the middle of opening or closing, second door 4b forms a slope toward the upper front side in side view. With this structure, water droplets falling from first door 4a or water guide plate 41 located above are less likely to splash out toward the outside of the machine, and the falling water droplets can be directed inside the washing tub. Therefore, even if door 4 is opened during washing, water leakage from first door 4a to the outside of the machine can be suppressed.

[0069] [Door interlocking mechanism 3 when opening and closing the door (maintaining the fully open state)] Figure 15 is a side view of dishwasher 1 showing an enlarged view of the vicinity of the first support member just before first door 4a is rotated to approximately horizontal. However, as with Figures 11 to 14, this is a drawing in which the side cover of housing 2 has been removed to show the internal structure of the side of the housing. Below, we will explain the rotation structure of the door until it is in the completely open state using Figures 13 to 15.

[0070] The first support member 51, which is formed in a U-shape, has an arc-shaped protrusion 64 at the tip of the end fixed to the first support shaft 55. When the first door 4a rotates, the arc-shaped protrusion 64 rotates together with the first support member 51. Also, a first rotation stopper 62 is provided at the upper back side of the side surface of the housing 2. The first rotation stopper 62 is configured in a roughly T-shape and has two recesses, and the T-shape is disposed in a direction rotated approximately 90 degrees counterclockwise as shown in FIG. 14. However, the lower end of the T is pivotally supported on the housing 2 by a fifth support shaft 65, and the first rotation stopper 62 is provided to be rotatable with this shaft as the starting point.

[0071] The upper end of the first rotation stopper 62 is connected to one end of the second spring 60 extending in the left-right direction. The other end of the second spring 60 is connected to a part of the side surface of the housing 2. As shown in FIG. 11 etc., the first rotation stopper 62 is connected to the fifth support shaft 65 as a starting point. When the rotation stopper 62 is in a state where it is slightly tilted toward the front, it assumes its natural length, and the first rotation stopper 62 and the second spring 60 are fixed so as to be in a stable stopped state.

[0072] With this configuration, when the first door 4a is further manually rotated from the position of the door 4 in Fig. 13, the tip of the arc of the arc-shaped protrusion 64 abuts against the depression above the first rotation stopper 62 just before the door 4 reaches the fully open state as shown in Fig. 14. When the door is further rotated from this point, the tip of the arc of the arc-shaped protrusion 64 rotates while abutting against the end of the T-shape of the first rotation stopper 62 extending toward the user (Fig. 15), and eventually climbs over the first rotation stopper 62 (Fig. 14). Just before climbing over, the front end of the T-shape of the first rotation stopper 62 is pressed by the arc-shaped protrusion 64, causing it to rotate toward the user from the fifth support shaft 65. 15 shows the state in which the first rotation stopper 62 is being pressed by the arc-shaped protrusion 64. When the first rotation stopper 62 is rotated toward the rear, the second spring 60, which was at its natural length, is extended. When the door is further rotated and the arc-shaped protrusion 64 passes over the first rotation stopper 62, the second spring 60 tries to return to its natural length, and a force acts in the direction of contraction due to its elastic force. The first rotation stopper 62 rotates from the fifth support shaft 65 to its original position, tilted slightly toward the front, and the second spring 60 returns to its natural length (FIG. 14). The tip of the fully rotated arc-shaped protrusion 64 fits into a recess below the first rotation stopper 62, and the tip of the arc-shaped protrusion 64 gets caught on the front end of the T-shape of the first rotation stopper 62. The first rotation stopper 62, which has returned to its original position, is biased by the second spring 60, which is at its natural length, and is therefore fixed in the position shown in Fig. 14. Therefore, since the first rotation stopper 62 is caught in the recess below, after the arc-shaped protrusion 64 has climbed over the first rotation stopper 62, even if the user lets go of it, the first door 4a will remain stopped in a substantially horizontal position in the completely open state shown in Fig. 14.

[0073] In the fully open state as shown in Fig. 14, the U-shaped support member rotates upward by approximately 90 degrees, so that the first door 4a rotates to a substantially horizontal position when the door is in the open state. If the first door 4a rotates to a substantially horizontal position and remains stopped in this way, the door will not be left open toward the front when the user opens it, and the space toward the front can be used effectively.

[0074] In order to open the door 4 completely, the arc-shaped projection 64 at the tip of the first support member 51 must overcome the first rotation stopper 62, as described above.

[0075] Conversely, when returning the door 4 from the open state to the closed state, the user must rotate the first door 4a downward, causing the arc-shaped protrusion 64 to climb over the first rotation stopper 62. Specifically, when the first door 4a is manually rotated downward from the position of the door 4 in Fig. 14, the tip of the arc of the arc-shaped protrusion 64, which is fitted into the recess below the first rotation stopper 62, rotates while abutting against the front end of the T-shape of the first rotation stopper 62 (Fig. 15), and eventually climbs over the first rotation stopper 62 (Fig. 13). Just before climbing over, the front end of the T-shape of the first rotation stopper 62 is pressed by the arc-shaped protrusion 64, causing it to rotate toward the rear, starting from the fifth support shaft 65. 15 shows the state in which the first rotation stopper 62 is being pressed by the arc-shaped protrusion 64. When the first rotation stopper 62 is rotated toward the rear, the second spring 60, which was at its natural length, is extended. When the door is further rotated and the arc-shaped protrusion 64 passes over the first rotation stopper 62, the second spring 60 tries to return to its natural length, and a force acts in the direction of contraction due to its elastic force. The first rotation stopper 62 rotates from the fifth support shaft 65 to its original position, tilted slightly toward the front, and the second spring 60 returns to its natural length (FIG. 13). The tip of the fully rotated arc-shaped protrusion 64 fits into a recess above the first rotation stopper 62, and the tip of the arc-shaped protrusion 64 catches on the front end of the T-shape of the first rotation stopper 62. The first rotation stopper 62, which has returned to its original position, is fixed in the position shown in FIG. 14 because it is biased by the second spring 60, which is in its natural length.

[0076] Therefore, the first rotation stopper 62 is caught in the upper recess, and the arc-shaped protrusion 64 After the first door 4a overcomes the first rotation stopper 62, the door 4 is in a half-open state in the middle of rotation as shown in Figure 13, and even if the user lets go of it at this point, the first door 4a will not return to the completely open state as shown in Figure 14.

[0077] [Direction of action when opening and closing the door] The door 4 is configured to be able to be opened and closed by a user gripping the movable opening / closing operation lever 8. Here, as described above, when the user grips the opening / closing operation lever 8 and pulls it towards themselves, the closed state of the door 4 is released and the door 4 rotates to open. At this time, the direction in which the user pulls the opening / closing operation lever 8 is the direction P shown in FIG. 14, which is a substantially horizontal direction. On the other hand, when the closed state of the door 4 is released, the first door 4a rotates upward and opens, and the rotation direction is the direction Q shown in FIG. 14, which is a substantially vertically upward direction.

[0078] Therefore, when a user operates opening / closing lever 8 to open door 4, the direction in which the user releases the closed state differs by approximately 90 degrees or more from the direction in which first door 4a opens. As a result, if a user tries to open door 4 while dishwasher 1 is in a wash operation, there is a short time between operating opening / closing lever 8 and door 4 opening, allowing door opening / closing detector 48 to detect that the closed state has been released and ensure time to stop driving the wash pump before door 4 can be opened. This prevents accidents such as water spraying from the nozzle outside the machine when door 4 is opened.

[0079] On the other hand, when the door 4 is in the closed state, the user can grasp the opening / closing operation lever 8 and pull it toward them, and then rotate it upward without changing the hand holding the opening / closing operation lever 8 to open the door 4. With this configuration, the user can perform the entire process from pulling the opening / closing operation lever 8 toward them to rotating it upward in one continuous motion. Of course, when closing the door 4 in the open state, the user also holds down a part of the first door 4a to rotate the door 4 downward, and finally applies force to the rear side to push it in, thereby engaging the latch and bringing it into the closed state. Therefore, the entire process from rotating the door 4 downward to bringing it into the closed state can also be performed in one continuous motion. As described above, with the configuration of this embodiment, the user can safely and smoothly open and close the door 4.

[0080] [Door shape and position] Next, the detailed shapes of the first door 4a and the second door 4b and the closing method thereof will be described.

[0081] When the opening 5 is closed, the first door 4a is closed so as to cover the second door 4b, which is shorter than the first door 4a. Here, part of the inner surface of the first door 4a is located above the upper end of the second door 4b. Furthermore, the upper end 16 of the second door 4b is in contact with part of the inner surface of the first door.

[0082] The first door 4a has an inner blocking portion 15 that protrudes from its inner surface, and when the door 4 is closed, the upper end 16 of the second door 4b comes into contact with the inner blocking portion 15, and at this time the opening 5 is completely blocked by the second door 4b and the inner blocking portion 15.

[0083] When the contact area between the second door 4b and the inner blocking portion 15 is the door inlay portion, the outer surface of the door inlay portion is covered by the first door 4a, and the opening 5 is closed by a double door structure with an inner door made up of the second door 4b and the inner blocking portion 15 and an outer door made up of the outer surface of the first door 4a, but as shown in Figure 1, it appears to be formed by a single door made up of the first door 4a.

[0084] This double door structure can more reliably prevent wash water from escaping outside the machine. Wash water sprayed from the nozzle during washing first hits the inner closing part 15 and the inner surface of the second door 4b. At this time, the narrower the width between the inner closing part 15 and the second door 4b, the more This reduces the probability that the sprayed water will pass through the gap between the inner blocking portion 15 and the second door 4b and splash onto the first door 4a. Furthermore, if the second door 4b and the inner blocking portion 15 are in contact with each other to form a door inset portion, the probability that the sprayed water will pass through and splash onto the first door 4a is further reduced.

[0085] 12 to 14, even when the door 4 is in the open state, the tip of the inner blocking part 15 is mainly located further back than the second door 4b in a side view. Therefore, even if water that has been sprayed and adhered to the inner blocking part 15 flows toward the tip of the inner blocking part 15, the dripping water droplets are received by the second door 4b, and therefore, the water droplets can be prevented from dripping outside the machine.

[0086] Furthermore, when door 4 is in the open position as shown in FIGS. 12 to 14 , water guide plate 41, which guides water droplets that have run down from the inner surface of door 4 into housing 2, is located closer to the inside of the washing tub than the tip of second door 4b in a side view. Specifically, water guide plate 41 has its rear end fixed to the inner surface of first door 4a, and its front end sagging down due to its own weight. Because the front end is not fixed, it is configured to move freely around the fixed rear end as an axis, depending on the rotation position of door 4 and its own weight. The front end forms a slope downward toward the front, which guides water droplets that have run down from the inner surface of door 4 into housing 2. Even if water droplets adhering to the inner surface of door 4 run down from the tip of door 4 after washing, the slope on the front side of water guide plate 41 is located closer to the inside of the washing tub than the tip of second door 4b in a side view, preventing the water droplets from falling outside of dishwasher 1.

[0087] [Water sealing member of second door 4b] Next, a sealing method near the second door 4b will be explained. Figure 16(a) is a cross-sectional view of the door inlay part when the door 4 is closed. Figure 16(b) is a cross-sectional view of the tip of the second door 4b when the door 4 is open. The following explanation will be made using Figures 4, 5, and 16.

[0088] The tip of the second door 4b has a first water sealing member 17 that extends to the left and right. The first water sealing member 17 is provided so as to protrude forward relative to the second door 4b, and when the door 4 is closed, the first water sealing member 17 comes into contact with the inner blocking portion 15 in a substantially vertical direction to form a seal, as shown in Figure 16(a). By sealing in a substantially vertical direction in this way, the inner contact portion of the door can be reliably sealed. Furthermore, because the seal only covers the area between the second door 4b and the inner blocking portion 15, the amount of water sprayed directly onto the water sealing member is small, which limits damage to the water sealing member and delays deterioration of the seal.

[0089] Furthermore, the tip of the first water sealing member 17 is uniformly and approximately V-shaped, and when the door 4 is open, a small amount of water can be received in the V-shaped space portion 18 of the first water sealing member, as shown in Figure 16(b). With this configuration, even if a small amount of water drips from the tip of the inner blocking portion 15 when the door 4 is open, the water can be received in the V-shaped space portion 18, preventing the water from dripping outside the machine.

[0090] Furthermore, the second door 4b has second water sealing members 19, shown as ellipses in Fig. 5, on both the left and right ends of the first water sealing member 17. The second water sealing member 19 has a front portion 21 and a corner portion 20 that extend outward in the left-right direction of the first water sealing member 17. The inner blocking portion 15 also has recesses 22 on both the left and right ends and a slope 23 that slopes downward toward the back side in order to be sealed by the water sealing member. When the door 4 is closed, the left side of the corner portion 20 comes into contact with the inner surface of the housing 2, the top surface of the corner portion 20 comes into contact with an annular gasket 24 that is provided to surround the periphery of the cleaning tank, and the front side of the corner portion 20 comes into contact with the slope 23. The width of the corner portion 20 is configured to be the same as the width of the annular gasket 24. Furthermore, the front portion 21 is in contact with the recess 22 of the inner closing portion 15, and this configuration seals the corners 20 and front portion 21 of the second water sealing member 19 with the inner surface of the housing 2 and the inner closing portion 15.

[0091] The second door 4b also has a third water sealing member 25 that extends left and right like a flat plate on the rear side opposite the first water sealing member 17. When the second door 4b is closed, the third water sealing member 25 comes into contact with the housing 2 in a substantially vertical state so as to cover and conceal the gap between the housing 2 and the bottom surface of the second door 4b, thereby sealing the gap between the housing 2 and the bottom surface of the second door 4b.

[0092] With this configuration, water droplets hitting the periphery of the second door 4b are reliably sealed and do not escape outside the aircraft.

[0093] When door 4 is closed, these water seals on second door 4b seal the area around inner closing section 15 and second door 4b, and first door 4a closes second door 4b to conceal it. While the water seal alone has low soundproofing performance, this embodiment has a double door structure in which the outer surface of the water seal provided on the door inner contact section between second door 4b and the inner closing section is further sealed by first door 4a, thereby suppressing water hammer noise during washing that would leak from the door inner contact section. This configuration allows dishwasher 1 to achieve washing with even less noise.

[0094] The dishwasher of the embodiment is configured as described above.

[0095] [Effects of this embodiment] The cleaning device according to this embodiment can provide the following effects.

[0096] The dishwasher 1 according to the first embodiment of the present disclosure comprises a housing, a washing tank provided within the housing for holding items to be washed, an opening provided in the washing tank, and a plurality of doors for closing the opening, and when the opening is closed, a first door of the plurality of doors is closed so as to cover a second door, and a portion of the inner surface of the first door is positioned above the upper end of the second door.

[0097] With this configuration, flush water is sprayed onto part of the inside surface of the first door 4a and onto the second door 4b, narrowing the area sprayed directly onto the first door 4a, which is located on the outside and covers the second door 4b. Therefore, even when the door 4 is open, only a small amount of water drips from the first door 4a, reducing the risk of water dripping from the door 4 getting the outside of the machine wet.

[0098] In dishwasher 1 according to embodiment 1 of the present disclosure, the upper end of the second door is in contact with part of the inner surface of the first door.

[0099] With this configuration, flushing water is sprayed onto part of the inside surface of the first door 4a and onto the second door 4b, making it less likely to be sprayed directly onto the first door 4a, which is located on the outside and covers the second door 4b. Therefore, even when the door 4 is in the open position, there are fewer water droplets dripping from the first door 4a, reducing the risk of water dripping from the door 4 getting the outside of the machine wet. The double door structure also improves waterproof and soundproofing performance.

[0100] The dishwasher according to the first embodiment of the present disclosure is configured so that the multiple doors open and close vertically, and is provided with a linkage means for linking a second door when a first door of the multiple doors opens or closes.

[0101] This configuration allows one door to be opened and closed at the same time as other doors, improving operability for the user. Also, even if there are multiple doors, all doors can be opened and closed with a single opening and closing mechanism.

[0102] In the dishwasher 1 according to the first embodiment of the present disclosure, the first door is a door that rotates upward to open, and the second door is a door that rotates downward to open, and when the doors are closed, The height of the door is configured to be smaller than the height of the first door, and when the opening is closed, the interlocking means closes the second door before closing the first door.

[0103] With this configuration, it is possible to realize a configuration in which the first door 4a can be closed so as to cover and hide the second door 4b.

[0104] In the dishwasher 1 according to embodiment 1 of the present disclosure, the first door has an inner blocking portion that protrudes from its inner surface, and when the door is closed, the upper end of the second door comes into contact with the inner blocking portion, and the opening is completely blocked by the second door and the inner blocking portion.

[0105] With this configuration, flushing water is sprayed onto part of the inside surface of first door 4a and onto second door 4b, and is less likely to be sprayed directly onto first door 4a, which is located on the outside and covers second door 4b. Therefore, even when door 4 is in the open position, there are fewer water droplets dripping from first door 4a, reducing the risk of water dripping from door 4 getting the outside of the machine wet. Furthermore, because opening 5 has a double-covered structure, waterproof and soundproofing performance can be improved.

[0106] In the dishwasher 1 according to embodiment 1 of the present disclosure, when the contact portion between the second door and the inner blocking portion is the door indentation portion, the outer surface of the door indentation portion is covered by the first door, so that the opening is blocked by a double door structure and the appearance is formed by a single door made by the first door.

[0107] With this configuration, the opening 5 has a double-covered structure, improving waterproofing and soundproofing performance. Also, because the exterior is formed by only one door, the first door 4a, it is possible to provide a simple and sophisticated design while maintaining performance.

[0108] In the dishwasher 1 according to embodiment 1 of the present disclosure, the second door has a water sealing member, and when the door is closed, the inner contact portion of the door is sealed by a first water sealing member provided at the tip of the second door.

[0109] This configuration makes it possible to seal the space between the inner blocking portion 15 and the second door 4b. Furthermore, even if the first water sealing member 17 deteriorates, the waterproof performance can be maintained because the outer surface of the first water sealing member 17 is further covered by the first door 4a.

[0110] In the dishwasher 1 according to embodiment 1 of the present disclosure, the first water sealing member is arranged to protrude forward relative to the second door, and when the door is closed, the water sealing member at the tip of the second door comes into contact with the inner blocking portion in an approximately vertical direction to form a seal.

[0111] With this configuration, the gap between the inner blocking portion 15 and the second door 4b can be reliably sealed.

[0112] In the dishwasher 1 according to embodiment 1 of the present disclosure, the tip of the first water sealing member is uniformly and approximately V-shaped, and when the door is open, the V-shaped portion of the first water sealing member can receive a small amount of water.

[0113] With this configuration, the first water sealing member 17 has a V-shaped space portion 18, and when the second door 4b is in the open state, the V-shaped space portion 18 can receive water droplets dripping from the first door 4a, thereby preventing water droplets from dripping outside the machine.

[0114] In the dishwasher 1 according to the first embodiment of the present disclosure, the second door has second water sealing members at both left and right ends, which come into contact with both left and right ends of the inner closing portion and the inner surface of the housing to form a seal when the door is closed.

[0115] With this configuration, the second door 4b can seal not only the top edge 16, but also the left and right sides of the inner blocking portion 15 and the gap between the second door 4b and the housing 2. Furthermore, by providing a solid seal around the second door 4b, waterproofing can be improved without providing a seal on the first door 4a. Also, because the first door 4a does not have a seal, seals with poor soundproofing performance can be covered by the first door 4a, reducing the impact of water hammer noise and improving soundproofing performance.

[0116] In the dishwasher 1 according to embodiment 1 of the present disclosure, the inner blocking portion has a water guide plate on the inner surface near the tip that contacts the second door, and when the door is opened or during rotation, the tip of the inner blocking portion and the water guide plate are positioned closer to the washing tank than the second door in a side view.

[0117] With this configuration, water droplets running down the inner surface of the first door 4a can be guided and dropped into the cleaning tub 3. This prevents the outside of the machine from getting wet, allowing for comfortable use by the user.

[0118] Although the present invention has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art, and it is to be understood that such changes and modifications are included within the scope of the present invention as defined by the appended claims unless they depart therefrom.

[0119] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents. [Industrial Applicability]

[0120] The present disclosure is applicable to cleaning devices that can use detergents, and more specifically, to dishwashers and the like. [Explanation of symbols]

[0121] 1 dishwasher 2. Case 3 Cleaning tank 4 doors 4a Door 1 4b 2nd door 5 Opening 6 Cleaning nozzle 7 Tower Nozzle 8 Opening and closing lever 9 Dish basket 10 Dish basket upper shelf 11 Door bottom recess 12 Operation display section 13 Water Tank 14 Tank lid 15 Medial occlusion 16 Top edge of second door 4b 17 First water sealing member 18 V-shaped space part 19 Second water sealing member 20 Corner 21 Front 22 recess 23 Slope 24 Annular packing 25 Third water sealing member 30 Control Unit 31 Heater 32 Cleaning pump 33 Process Control Department 41 Water guide plate 42 Latch 43 Latch engagement groove 44 Latch connecting spring 45 Sheet Metal 46 Lever connecting plate 47 Tip hook 48 Door opening / closing detector 481 Switch Lever 482 Switch lever plate 483 Microswitch 50 Linkage means 51 first support member 52 Link member 53 Second support member 54 Third support member 55 1st support shaft 56 2nd support shaft 57 3rd support shaft 58 4th support shaft 59 First Spring 60 Second Spring 61 Third Spring 62 First rotating stopper 63 Second rotating stopper 64 Arc-shaped protrusion 65 5th support shaft

Claims

1. The housing and a cleaning tank provided in the housing and configured to accommodate an object to be cleaned; an opening provided in the cleaning tank; a plurality of doors that close the opening, The plurality of doors include a first door that pivots upward to open and a second door that pivots downward to open, When the opening is closed, the first door is closed so as to cover and conceal the second door, the first door has an inner closing portion that protrudes from an inner surface and closes a part of the opening, In the closed state of the door, The entire opening is closed by the second door and the inner closing portion, and a contact portion between the second door and the inner closing portion is covered by the first door. dishwasher.

2. The plurality of doors are configured to open and close vertically, and a linking means for linking a second door when a first door of the plurality of doors is opened or closed.

2. The dishwasher of claim 1.

3. 3. The dishwasher according to claim 2, wherein when the doors are closed, the height of the second door is smaller than the height of the first door, and when the opening is blocked, the interlocking means closes the second door before closing the first door.

4. When the contact portion between the second door and the inner blocking portion is a door inward contact portion, the outer surface of the door inward contact portion is covered by the first door, so that the opening is blocked by a double door structure, On the outside, it is formed by a single door, The dishwasher according to any one of claims 1 to 3.

5. When the door is closed, the door inner contact portion is sealed by a first water sealing member provided at the tip of the second door.

5. The dishwasher of claim 4.

6. the first water sealing member is provided so as to protrude forward relative to the second door, 6. The dishwasher of claim 5, wherein, when the door is in a closed state, the first water seal member contacts and seals with the inner closing portion in a substantially vertical direction.

7. The first water sealing member has a tip end that is uniformly and approximately V-shaped, 7. The dishwasher according to claim 5, wherein the V-shaped portion of the first water seal member is capable of receiving a small amount of water when the door is in an open state.

8. the second door has second water sealing members on both left and right ends, The dishwasher according to any one of claims 5 to 7, wherein, when the door is in a closed state, the second water seal member contacts both left and right ends of the inner closing portion and an inner surface of the housing to form a seal.

9. the inner blocking portion has a water guide plate on an inner surface near a tip that contacts the second door, When the door is in an open state or during rotation, a tip end of the inner closing portion and a water guide plate are located closer to the cleaning tank than the second door in a side view. The dishwasher according to any one of claims 1 to 8.

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