JP2007007457A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawer-type dishwasher which stops not only water-splashing by water discharge from a nozzle but water-leaking by water-dropping from the upper cover even if dishes are put in or taken out in a situation as in the middle of washing or rinsing. <P>SOLUTION: When the washing vessel is contained in a box body and a slide lever 73 is engaged with a front frame 1a of the box body to see that the washing vessel cannot be drawn out, a solenoid 74 is operated to prevent the slide lever 73 from falling, the state that the washing vessel cannot be drawn out is locked and washing operation begins. When the operating part receives an operating command to halt the washing operation temporarily, operations of a washing pump and the like are stopped and the state that the washing vessel cannot be drawn out is unlocked by operating the solenoid 74 to enable the slide lever 73 to fall. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dishwasher, and more particularly, to a dishwasher suitable for a built-in type for incorporation into a system kitchen.

  In general, a dishwasher for home use introduces tap water into the washing cabinet and stores it at the bottom, and then operates the pump to suck in the stored water and feed it to the nozzle. The tableware stored in the washing cabinet is washed by spraying the water. In this type of conventional dishwasher, a washing cabinet is provided inside the casing, and a door that rotates downward is provided on the front of the casing. It has a structure that pulls out horizontally.

  In recent years, with the spread of the system kitchen to general households, built-in type dishwashers for incorporation into the system kitchen are commercially available. In other words, this type of dishwasher is a so-called drawer-type dishwasher, and a washing cabinet that houses a tableware for storing tableware is configured to be able to be drawn forward together with a door that also serves as a front panel. When the washing cabinet is pulled out, the upper surface of the washing cabinet is wide open so that dishes can be taken in and out from above. When the washing cabinet is pushed into the cabinet, the upper lid that was waiting in the upper space inside the cabinet Falls and closes the upper surface opening of the cleaning cabinet (see, for example, Patent Document 1).

Not only in these drawer type dishwashers, but also in a dishwasher that opens by turning the conventional door to the front, when putting in and out dishes during the washing operation, etc., the door immediately opens after pressing the pause key. If it is opened, the water spouted from the nozzle may jump out of the washing cabinet and wet the surroundings, or if the water is hot, it may hit the user and cause burns. Therefore, conventionally, in a dishwasher, an operation lever of a latch device that prohibits the opening of the door is provided on the door, and when the tableware is taken in and out during an easy washing operation, the pause key is pressed. → Operate the lever of the latch device to release the latch → Grab the handle and open the door. This requires three steps of operation, until the washing pump stops and the water injection from the nozzle stops. The delay time is ensured.
JP 2000-139799 A

  However, in a drawer-type dishwasher, even if the jet of water from the nozzle stops, a lot of water droplets adhere to the lower surface of the upper lid that closes the upper surface of the washing cabinet. If it falls out of the washing cabinet, it may eventually flow out of the machine and wet the surroundings.

  The present invention has been made in order to solve the various problems as described above, and an object of the present invention is to draw out and put in dishes in the drawer-type dishwasher during easy washing and excessive operation. Even in such a case, it is an object of the present invention to provide a dishwasher capable of preventing leakage of water due to dripping of water adhering to an upper lid as well as jumping out of water by jetting water from a nozzle.

  The present invention, which has been made to solve the above-mentioned problems, has a front frame body, a housing having an open front surface, an upper surface opening, and a wash cabinet that can be drawn forward from the front opening of the housing. And an upper lid that closes the upper surface opening of the cleaning cabinet when the cleaning cabinet is stored in the housing, and a front panel attached to the front wall of the cleaning cabinet to close the front opening of the housing, A handle portion that is recessed inwardly at the top of the front panel and that can be inserted with the user's fingertips, and that is provided inside the handle portion and rotates when the user's fingertip is inserted into the handle portion. A rotating body that engages with the front frame of the casing when the cleaning cabinet is housed in the casing and prevents the cleaning cabinet from being pulled out of the casing, and the front frame of the casing As the rotating body moves to the disengaged position from the body. A slide lever that allows the cleaning cabinet to be pulled out of the housing, and locks the drawer-preventing state of the cleaning cabinet by preventing the slide lever from being lowered, allowing the slide lever to be lowered. A lock device for releasing the lock of the washing cabinet in a drawer blocking state, a door switch for detecting whether or not the washing cabinet is housed in the housing, and the washing cabinet for storing dishes. A plurality of nozzles for spraying cleaning water on the tableware to remove dirt on the tableware stored in the tableware and disposed at the bottom of the cleaning cabinet. Arm, a cleaning pump that pumps cleaning water to the arm, a control unit that controls operations of the cleaning pump and the like to perform washing, rinsing and drying processes, and various types of control units. And an operation unit that gives instructions and instructions, and the slide lever contacts the front frame of the housing when the cleaning cabinet is pushed into the housing and receives a part of the force due to the contact. And after having passed through the front frame of the housing, it is raised again to engage the back of the front frame to prevent the cleaning cabinet from being pulled out of the housing. The control unit detects that the cleaning chamber is stored in the housing and the door switch detects that the cleaning chamber is stored in the housing, and then operates the locking device to lower the slide lever. To prevent the washing cabinet from being pulled out, start operation of the washing pump and the like to perform washing, rinsing and drying processes, and the control unit performs the washing process or the rinsing process. The operation unit The operation of the washing pump or the like is stopped when the operation instruction of the suspension is received from the lock, and the lock device is operated so that the slide lever can be lowered, and the lock of the washing cabinet is prevented from being pulled out. It is characterized by canceling.

  In other words, the conventional dishwasher is provided with latch means for selectively opening and closing the door by manual operation by the user. Regardless of internal conditions or driving conditions, the door could be opened at any time as long as the user performed an operation to release the latch. On the other hand, the lock device in the dishwasher according to the present invention prevents the user from opening the opening of the washing cabinet to the outside of the housing according to the internal situation and the operating situation of the washing cabinet, even if used. Even if a person tries to open the opening of the cleaning cabinet outside the casing, the opening of the cleaning cabinet cannot be opened outside the casing.

  In the dishwasher according to the present invention, the controller is configured to operate the lock device after a predetermined time has elapsed after the operation of the washing pump is stopped to release the lock in the drawer-preventing state of the washing cabinet. It is preferable.

  According to the dishwasher of the present invention, for example, when there is a possibility that water sprayed from the nozzle provided in the washing cabinet may jump out of the cabinet, or even if there is no problem of water leakage, other safety issues In circumstances such as when it is better to prohibit the opening of the cleaning cabinet from being opened outside the housing for consideration, etc., the user may not be able to open the opening of the cleaning cabinet outside the housing. It is possible to prevent leakage of water to the outside of the machine and splashing of water on the user.

  A dishwasher according to one embodiment of the first and second inventions will be described below with reference to the drawings. First, the whole structure of the dishwasher of a present Example (henceforth "1st Example") is demonstrated with reference to FIGS. 1 and 2 are schematic side cross-sectional views showing the overall configuration of the dishwasher. FIG. 1 shows a state in which the washing cabinet is housed in the housing, and FIG. 2 shows a state in which the washing cabinet is pulled out from the housing. FIG. 3 is a front external view of the dishwasher.

  A cleaning cabinet 2 having an upper surface opening 3 is disposed inside the housing 1 whose front surface is open, and a tableware bowl (not shown) for arranging tableware is installed inside the cleaning cabinet 2. A front panel 4 also serving as a door that closes the front opening of the housing 1 is detachably attached to the front wall 2a of the cleaning cabinet 2, and the front panel 4 and the cleaning cabinet 2 are integrally formed with the casing 1. It can be pulled out forward along a rail 5 installed substantially horizontally on the inside of both side walls.

  In the upper space in the housing 1, an upper lid 10 for closing the upper surface opening 3 of the cleaning cabinet 2 is pivotally supported at one end inside the side wall of the housing 1 and the other end is pivotally supported on the side surface of the upper lid 10. The left and right pair of parallel links 11 are swingably supported. In the state where the cleaning cabinet 2 is housed in the housing 1, as shown in FIG. 1, the upper lid 10 is in close contact with the upper surface of the cleaning cabinet 2 to close the upper surface opening 3, and the cleaning cabinet 2 is moved forward from the housing 1. In the pulled out state, as shown in FIG. 2, the upper lid 10 is held in a state where it is lifted forward.

  A retractable water supply hose 9 having a water supply valve (not shown) is connected to the rear of the cleaning cabinet 2. When the water supply valve is opened, water supplied from an external water tap or the like passes through the water supply hose 9 and the cleaning cabinet 2. Poured into. A water tank 7 that is greatly depressed is communicated with the bottom of the front part of the cleaning cabinet 2, and the water poured into the cleaning cabinet 2 flows into the water storage tank 7 and is stored therein. A mesh-like filter (not shown) for detaching food residue that flows down from the tableware when the tableware is washed is detachably provided on the upper portion of the water tank 7. A rotatable arm 6 having a plurality of nozzles formed on the upper surface is provided at the center of the bottom of the cleaning chamber 2, and a cleaning and drainage pump 8 is disposed below the bottom surface of the cleaning chamber 2. The washing and draining pump 8 includes a motor that can be driven to rotate in both directions. When the motor rotates in the forward direction, the washing and draining pump 8 functions as a washing pump, and when the motor rotates in the reverse direction, the washing and drainage pump. 8 functions as a drainage pump (hereinafter referred to as “cleaning pump 8a” when functioning as a cleaning pump, and “drainage pump 8b” when functioning as a draining pump).

  As shown in FIG. 1, when the washing cabinet 2 is completely stored in the housing 1 and the washing operation or the rinsing operation is performed, a water supply valve (not shown) is opened and water is supplied into the washing cabinet 2 through the water supply hose 9. Is supplied. The water supplied into the cleaning chamber 2 is collected at the bottom of the cleaning chamber 2 including the water storage tank 7. This stored water is appropriately heated by the heater 12 disposed at the bottom of the washing cabinet 2. When the washing and draining pump 8 is driven as a washing pump in this state, the hot water sucked from the water storage tank 7 is pumped to the arm 6 and is injected into the washing chamber 2 from the nozzle. Thereby, water sprays on the tableware accommodated in the washing | cleaning store | warehouse | chamber 2, and dirt is removed. The food residue adhering to the tableware is collected by the filter, and the water flows into the water tank 7 and circulates again.

  In addition, although description is abbreviate | omitted because the figure becomes complicated, between the front wall 2a and the front panel 4 of the washing | cleaning store | warehouse | chamber 2, the ventilation means including a ventilation fan etc. and the exhaust means are provided, and drying is carried out. During the stroke, the outside air is supplied into the washing cabinet 2 by the air blowing means, and the outside air is heated by the heater 12 and hits the tableware, and the air containing water vapor emitted from the tableware is discharged to the outside by the exhaust means. Yes.

  Such a series of operations is performed in response to a user's operation as will be described later. For example, there is a case where it is desired to add dishes immediately after the start of the washing operation. When the washing operation has already been started, as described above, the water is vigorously ejected from the nozzles of the arm 6 in the washing chamber 2, so that the operation of the washing pump 8a is stopped and the water injection is ensured. If the washing cabinet 2 is pulled out before it stops, water will jump out of the machine. Furthermore, as shown in FIG. 2, the upper lid 10 remains inside the housing 1 in the state in which the washing cabinet 2 is pulled out, so even if the water injection in the washing cabinet 2 is stopped, the upper lid 10. If a large amount of water droplets are attached to the lower surface of the water, this water may fall outside the cabinet and eventually leak out of the machine.

  Therefore, in the dishwasher according to the first embodiment, it is not preferable that the washing cabinet 2 is pulled out in addition to the manual latch device 20 for prohibiting the opening of the door, which is generally provided in the conventional dishwasher. A locking device 30 is provided to automatically prevent the latch device 20 from being released when the situation is in effect. That is, in the present dishwasher, as shown in the drawing, the upper portion of the front panel 4 has a slope portion 4a protruding like a bowl, and has a handle portion 13 recessed inwardly under the slope portion 4a. The handle portion 13 is provided with an operating lever 21 for latching that can be turned right and left. Between the front panel 4 behind the operation lever 21 and the front wall 2a of the washing cabinet 2, the drawer operation of the washing cabinet 2 is blocked in conjunction with the operation of the operation lever 21 by the user, or the blocking is prevented. A latch device 20 for releasing and a lock device 30 for blocking the operation of the operation lever 21 so that the user does not release the blocking of the drawer operation of the washing cabinet 2 by electrical control are incorporated. ing. An operation panel 14 having various operation keys and a display is provided on the slope 4a of the front panel 4.

  Next, the structure and operation of the latch device 20 and the lock device 30 will be described with reference to FIGS. Although the latch device 20 and the lock device 30 are integrally formed, the lock device 30 is provided at a lower portion of the latch device 20 as a whole.

  4 to 6 are top views showing the detailed configuration of the latch device 20, in which FIG. 4 is a state without a drip-proof plate, FIG. 5 is a state with a drip-proof plate attached, and FIG. 6 is a hinge lever and latch. It is a figure which shows the positional relationship with a lever. 4 to 6, only the outer frame is shown for the locking device 30 in order to avoid complication. FIG. 7 is a side sectional view showing a detailed configuration of the latch device 20. The main components constituting the latch device 20 are the mounting plate 22, latch lever 23, hinge lever 24, latch spring 25, hinge spring 26, drip-proof plate 27 and the like in addition to the operation lever 21.

  As described above, one end of the operation lever 21 protrudes from the opening 4 b of the front panel 4 to the outside of the machine, and the other end is fixed to the mounting plate 22 so as to be rotatable about a vertical shaft 221. The operation lever 21 and the latch lever 23 are fixed by a fixed shaft 211, and both of them can be rotated around the shaft 221. The latch lever 23 has an engagement piece 231 erected in an L shape, and the engagement piece 231 protrudes upward from an opening 2 c opened in the front edge upper portion 2 b of the cleaning cabinet 2. The operating lever 21 has a downwardly extending drooping piece 212, and a latching spring 25, which is a coil spring, is interposed between the drooping piece 212 and a spring fixing piece 222 that bends and extends downward from the mounting plate 22. It is stretched. Due to the tensile force of the latch spring 25, the operating lever 21 is urged in the direction from the substantially center of the rotatable range toward both ends.

  With the above-described configuration, the engagement piece 231 of the latch lever 23 rotates about the shaft 221 in response to the left / right rotation operation of the operation lever 21 as shown in FIG. When the operation lever 21 rotates, the fixed shaft 211 moves in an arc-shaped opening 223 provided on the mounting plate 22, so that both ends of the opening 223 act as stoppers, and the fixed shaft 211 is moved. The operation lever 21 and the latch lever 23 are restricted from rotating at positions where they come into contact with both ends.

  The hinge lever 24 is attached to the mounting plate 22 so as to be rotatable about a shaft 241 and is attached in a direction in which the contact piece 242 stands upright (in a clockwise direction in FIG. 7) by a hinge spring 26 which is a torsion coil spring. It is energized. An opening 2e is provided in the standing wall 2d, which is a part of the wall surface forming the cleaning cabinet 2, located behind the contact piece 242 of the hinge lever 24, while the cleaning cabinet 2 is stored in the housing 1. The front frame body 1a attached to the front surface of the housing 1 that faces the upright wall 2d when provided is provided with a pin 1b protruding forward. In a state where the cleaning cabinet 2 is completely stored in the housing 1, the pin 1 b is inserted into the opening 2 e and presses the contact piece 242 of the hinge lever 24.

  The above-described latch device 20 operates as follows. When the cleaning chamber 2 is pulled out from the housing 1 as shown in FIG. 2, the contact piece 242 of the hinge lever 24 is not pushed by the pin 1 b, and the contact piece 242 is pressed by the hinge spring 26. Energized to stand up. When the contact piece 242 is in an upright state, the locking piece 243 at the lower end of the hinge lever 24 is in contact with the latch lever 23 at the position L3 shown in FIG. 6, so that the operation lever 21 is moved from the position L3 to the latch position L2. It is prevented from rotating in the direction of. Thereby, in the state where the washing cabinet 2 is pulled out, even if the user tries to turn the operation lever 21 in the direction of the latch position L2, it cannot be turned, and an undesired latch operation can be prevented.

  When the user pushes the cleaning chamber 2 into the housing 1 from the state in which the cleaning chamber 2 is pulled out, the engagement piece 231 of the latch lever 23 is opened in the front frame 1a of the housing 1 in the latch hole 1c. Therefore, the engagement piece 231 enters the latch hole 1c. When the cleaning cabinet 2 is completely stored in the housing 1 as shown in FIG. 1, the engaging piece 231 is in a position where a part of the engaging piece 231 enters the latch hole 1c as shown in FIG. At this time, the contact piece 242 of the hinge lever 24 is pushed by the pin 1b, the hinge lever 24 rotates about the shaft 241 against the biasing force of the hinge spring 26, and the locking piece 243 at the lower end is latched. The lever 23 is released from the position where it can be locked. Thereby, in a state where the cleaning cabinet 2 is housed in the housing 1, the user can turn the operation lever 21 to the latch position.

  When the user rotates the operation lever 21 to the latch position (position L2 in FIG. 4), the engagement piece 231 of the latch lever 23 is behind the bent edge 1d of the latch hole 1c of the front frame 1a. The engagement piece 231 cannot be removed from the latch hole 1c. As a result, the front panel 4 (and the cleaning cabinet 2) is latched in an open-prohibited state, and the cleaning cabinet 2 cannot be pulled forward unless this latch is released.

  By the way, since the opening 2c is provided in the front edge upper part 2b of the washing | cleaning store | warehouse | chamber 2, if water falls below from this, water will splash on the latch apparatus 20 and the locking apparatus 30, and will cause a failure. Therefore, as shown in FIGS. 5 and 7, a drip-proof plate 27 made of a synthetic resin material is fitted into the engagement piece 231 so as to lightly contact the lower end of the opening 2c. The drip-proof plate 27 has a concave portion 273 surrounded by a wall portion 271 provided on the periphery, and the wall portion 271 is partially interrupted to form a flow lower portion 272. That is, when water spills into the opening 2 c, the water gradually leaks from the slight gap between the lower end of the opening 2 c and the drip-proof plate 27 and flows into the recess 273. Since the leakage of the water is small, the water is not strong enough to get over the wall 271. The water that has flowed into the recess 273 falls downward from the flow bottom 272. Since this drop position is determined so as to be on the inner side of the latch device 20 and the lock device 30, even if water flows down from the flow lower portion 272, there is no influence. In this way, the latch device 20 and the lock device 30 are prevented from getting wet.

  Further, as shown in FIG. 6, the operation lever 21 is not locked at the position L1, which is the end of the rotation range, but is locked at the position L3 on the center side of the operation lever 21 by the hinge lever 24. Is configured to act. Therefore, when the user tries to release the latch in order to pull out the washing chamber 2 and rotates the operation lever 21 from the latch position (that is, the position L2 in FIG. 4) to the position L3, at that time (that is, the position L1 is reached). (Before), the contact of the latch lever 23 and the locking piece 243 of the hinge lever 24 prevents the operation lever 21 from rotating in the direction of the position L2. If the user tries to pull out the cleaning cabinet 2 when the operation lever 21 is at the position L3, the engagement piece 231 is at the position L3 'at that time, and the engagement piece 231 is in the middle of pulling out the cleaning cabinet 2. It contacts the bent edge 1d of the latch hole 1c and receives a clockwise force. Then, the cleaning cabinet 2 is pulled forward while the operation lever 21 moves from the position L3 to the position L1.

  Thus, in this dishwasher, since the operation lever 21 is always locked by the hinge lever 24 so that it cannot be rotated in the latch position L2 direction when the washing cabinet 2 is pulled out, the user moves the washing cabinet 2 forward. Therefore, it is possible to prevent the operation lever 21 from being rotated to the latch position in the state where the lever is pulled out. On the other hand, in the halfway state where the operation lever 21 is not completely rotated from the latch position L2 to the position L3 (that is, the operation lever 21 is not locked by the hinge lever 24 as described above), the washing cabinet Even if it is going to pull out 2, the engaging piece 231 comes into contact with the front frame 1a to prevent the cleaning cabinet 2 from being pulled out. That is, one of the prevention of the drawer operation of the cleaning cabinet 2 and the prevention of the rotation of the operation lever 21 by the hinge lever 24 is always performed, and as a result, the cleaning cabinet 2 is pulled out as described above. Latch operation can be reliably prevented.

  8 is a top view showing a detailed configuration of the locking device 30, FIG. 9 is a longitudinal sectional view of a main part of the locking device 30, FIG. 10 is a top view showing the configuration of the latch detection switch, and FIG. 11 is a configuration of the latch detection switch. FIG. 12 is a top view showing the relationship between the latch lever 23 and the lock shaft 331, and FIG. 13 is a front view of a handle cover attached to the inside of the handle portion 13. In FIGS. 8 to 12, unnecessary parts are not shown in order to avoid complexity.

  As shown in FIGS. 8 and 9, the locking device 30 includes a solenoid 32, a heart cam type drive mechanism 33, a micro switch 34, and the like, which are respectively attached to predetermined positions inside the case 31. The solenoid 32 pulls the plunger 321 only during the energization period when energization is performed from the outside, and releases the energization when the energization is stopped. The heart cam type drive mechanism 33 is connected to the plunger 321, and each time the plunger 321 is pulled, the lock shaft 331 is alternately advanced and retracted between a position L4 and a position L5 in FIG. When the lock shaft 331 is at the position L4, the lock shaft 331 does not interfere with the hanging piece 212 within the rotation range of the operation lever 21. Therefore, the operation lever 21 can freely rotate. On the other hand, when the lock shaft 331 is advanced to the position L5 when the operation lever 21 is in the latch position (position L2 shown in FIG. 8), the lock shaft 331 interferes with the hanging piece 212 of the operation lever 21, and the operation lever 21 is moved. Even if it tries to rotate in the latch release direction, the drooping piece 212 contacts the lock shaft 331 and the rotation is prevented. In this way, the solenoid 32 can be prevented from turning and released by turning the solenoid 32 from the outside for a short time.

  The micro switch 34 is substantially in line with the solenoid 32 and the drive mechanism 33, and is arranged so that the mover 341 is pushed when the lock shaft 331 advances to the position L5. Therefore, whether the lock shaft 331 is in the position L4 or the position L5, that is, whether or not the operation lever 21 is locked can be detected by the conduction or non-conduction of the microswitch 34.

  A switch mechanism that recognizes the release of the latch or the latch by detecting the position of the operation lever 21 is provided at the bottom of the case 31. As shown in FIGS. 10 and 11, the switch mechanism includes a micro switch 35, a leaf spring 36, and a switch mounting plate 37, and the leaf spring 36 is attached to a bendable contact piece 371 of the switch mounting plate 37. Yes. When the operation lever 21 rotates, the contact piece 371 just contacts the vertical portion 214 of the operation lever 21 and is pushed and bent as shown in FIG. Then, the leaf spring 36 presses the movable piece 352 of the microswitch 35, thereby pressing the movable element 351. As a result, the fact that the operation lever 21 has been rotated to the latch position can be detected by the conduction or non-conduction of the micro switch 35.

  When the operating lever 21 is slightly returned from the latch position, the contact piece 371 is slightly restored from the large bent state since it is interlocked with the movement of the hanging piece 212 of the operating lever 21. However, the leaf spring 36 absorbs the movement of the contact piece 371 by restoring its shape and does not transmit it to the movable piece 352. That is, as long as the operation lever 21 is slightly returned from the latch position, the movable element 351 of the micro switch 35 is maintained in the pressed state, and it can be correctly recognized that the latched state is maintained.

  Even if the operation lever 21 is rotated to the latch position and the engaging piece 231 of the latch lever 23 is engaged with the front frame 1a as described above, there is always play in these mechanisms. 21 can slightly return from the position L2 which is one end of the rotation range to the position L1. Even in such a case, in the dishwasher, as described above, the operation lever operated by the user or the member that rotates integrally therewith does not directly push the movable element of the switch, but has elasticity (flexibility). By configuring the switch lever so that the operating lever is pressed to a position where the repulsive force of the elastic member acts via the leaf spring 36 as a member, the operating lever is temporarily moved to the final pressing position. Even when returning from the state, the return is absorbed by restoring the elastic member such as bending or dent, and the state in which the movable element of the switch is pressed is maintained. Therefore, it is possible to accurately detect the state of the latch or the like while maintaining the closed or open state of the switch without being affected by the play of the mechanism as described above.

  Normally, when the operation lever 21 is in the latch position, the lock shaft 331 is advanced to the position L5 to prevent the operation lever 21 from rotating. Even when the lock shaft 331 has advanced to the position L5 when is in the latch release position, consideration is given so that the normal state can be restored.

  That is, as shown in FIG. 12, when the hanging piece 212 of the operation lever 21 is on the left side of the lock shaft 331 and the lock shaft 331 is at the position L5, the operation lever 21 is moved in the counterclockwise direction (that is, the latch direction). ), The arc portion of the hook 251 of the latch spring 25 that is hooked on the hanging piece 212 comes into contact with the lock shaft 331, and a force is applied to press the lock shaft 331 in the direction of the position L4. Then, as the arc portion of the hook 251 (that is, the hanging piece 212) rotates, the lock shaft 331 gradually retracts in the direction of the position L4, and when retracted to a predetermined position, the arc portion of the hook 251 is shown in FIG. Passing above 331 from left to right. As a result, the lock shaft 331 that has stopped receiving the force from the arc portion of the hook 251 returns to the position L5 again, and as usual, the lock shaft 331 is in the position L5, that is, the operation lever 21 with the operation lever 21 in the latch position. It comes to the position where the lever 21 is locked.

  Thus, when the hook 251 of the latch spring 25, which is a member that rotates integrally with the operation lever 21 operated by the user, moves from the latch release position to the latching direction, the lock 251 is locked. When the lock shaft 331 which is a part of the means crosses the movement range of the lock shaft 331 and is in a position to lock the lock shaft 331 which can not be originally taken, the lock shaft 331 is brought into contact with the lock shaft 331 within the movement range. When the operating lever 21 reaches the latch position, the lock shaft 331 returns to the original lock position. Accordingly, it is possible to return from an abnormal state in which the operating lever is in the latch release position while the locking means is in the locked position to a normal state in which the operating lever is in the latch position and the locking means is in the locked position. As described above, in this dishwasher, the user can operate the latch device operating lever 21 as usual without being particularly aware of it, and the unnatural state of the latch device and the lock device can be solved to return to a normal state. Can be restored.

  Further, in the present dishwasher, the operation lever 21 is locked and unlocked by electrically controlling the solenoid 32. For example, the lock is released when the energization is impossible or the solenoid is broken. If it becomes impossible, the washing cabinet 2 cannot be pulled out, and there is a possibility that the tableware inside the washing cabinet 2 cannot be taken out. Therefore, in order to cope with such a situation, consideration is given so that the operation lever 21 can be unlocked manually.

  That is, as shown in FIG. 13, a notch 151 is formed at the center of the handle receiving member 15 attached to the inside of the handle portion 13. When the handle receiving member 15 is attached to the front panel 4, a large opening is formed by a notch 151 on the opening 4b as shown in FIG. 9, and the lock shaft 331 is arranged behind the opening. Therefore, the lock of the operation lever 21 can be released by inserting a rod-like tool such as a screwdriver through the notch 151 and forcibly moving the lock shaft 331. In addition, since this notch 151 is just hidden behind the slope part 4a of the front panel 4, it is hardly visible at the time of normal use, and an external appearance is not impaired.

  In the first embodiment, a mechanism using a heart cam is employed as the drive mechanism 33 that moves the lock shaft 331 in accordance with the drive of the solenoid 32, but other structures may be used. Specifically, for example, a double knock type mechanism used in the second embodiment described later may be used.

  Next, the electrical configuration and characteristic operation of the dishwasher according to the first embodiment will be described. FIG. 14 is an electrical configuration diagram of the main part of the dishwasher. The control unit 40 is mainly composed of a microcomputer including a CPU, a ROM, a RAM, a timer, and the like. Based on a control program stored in the ROM, various control operations such as washing, rinsing and drying processes are performed. Execute the control. The control unit 40 is sounded when an operation unit 42 for the user to give various settings and instructions, a display unit 43 for the user to monitor the setting contents and the driving situation, and to alert the user. The buzzer 44, the latch detection switch 35 that is turned off or on in conjunction with the operation of the operation lever 21 as described above, and the lock detection switch 34 that is turned off or on in conjunction with the operation of the lock shaft 331 are all in the washing chamber 2. An abnormal water level detection switch 45 and a normal water level detection switch 46 that are arranged in a communicating water level detection chamber and are turned on or off by a float that rises or falls according to the water level of the water stored in the cleaning chamber 2, or the water in the cleaning chamber 2 or A temperature sensor 47 for detecting the temperature of the air is connected. Further, a load driving unit 41 is connected to the control unit 40, and the operations of the washing pump 8a, the drainage pump 8b, the blower motor 48, the water supply valve 49, the heater 12, the solenoid 32 and the like are operated via the load driving unit 41. Control.

  In the dishwasher having the above configuration, since the operation lever 21 is normally locked in the latched state from the start of the washing operation to the end of the drying operation, the drawer of the washing cabinet 2 is prohibited. For example, when it is desired to add tableware after the start of the washing operation, it is necessary to temporarily operate the pause key on the operation unit 42. Next, processing relating to the withdrawal of the washing cabinet 2 during the washing operation and the rinsing operation will be described with reference to the flowchart of FIG. In the dishwasher, as described above, the operation lever 21 is locked so as not to rotate from the latch position, but in the following description, such a lock is conventionally referred to as “door lock”. ".

  First, the control unit 40 determines whether or not the pause key is pressed in the operation unit 42 (step S1), and executes another process when the pause key is not pressed. On the other hand, when the temporary stop key is pressed, the operation of the cleaning pump 8a is stopped (step S2). When the operation of the cleaning pump 8a is stopped, water is not pumped to the arm 6 and water injection from the nozzle is stopped. Thereafter, the lighting display of the door lock indicator on the display unit 43 is changed to blinking display (step S3), and the buzzer 44 is driven so as to generate intermittent beeps (step S4). This display and sound notification are for informing the user that they are waiting until the door lock is released. During this period, the operation of the cleaning pump 8a is stopped, but even if the user tries to rotate the operation lever 21, it does not rotate, and the drawer of the cleaning chamber 2 is prohibited.

  Steps S3 and S4 are repeated until a predetermined standby time elapses. When the predetermined standby time elapses ("Y" in step S5), the solenoid 32 is activated to unlock the latched state of the operating lever 21. (Step S6). Here, the predetermined waiting time is determined on the assumption of the time required for water droplets adhering to the lower surface of the upper lid 10 to sufficiently fall or flow down during the cleaning operation and to settle at least not to drop directly. Is about 5 to 10 seconds. After unlocking at step S6 or almost simultaneously, the door lock indicator is turned off from the blinking display (step S7), and a long buzzer is generated only once (step S8). The user knows that the washing cabinet 2 can be pulled out by this, and can pull out the washing cabinet 2 with the operation lever 21 in the latch release state. At this time, no large water droplets are attached to the lower surface of the upper lid 10, and the water droplets do not fall outside the storage.

  Thus, according to the above processing, when it is necessary to pull out the washing cabinet 2 during the washing operation or the rinsing operation, the operation of the washing pump 8a is stopped and the water sprayed from the nozzle does not jump out of the machine. In addition, it is possible to reliably prevent water droplets attached to the lower surface of the upper lid 10 from falling outside the cabinet and getting wet. After the door lock is released in step S6, the lock detection switch 34 confirms whether the door lock is released. If the door lock is not released, the solenoid 32 is driven again. Try to unlock the door. Such a repetition is performed a plurality of times, and as a result, when it is determined that the door lock is not released, the display or the buzzer 44 notifies that it is in an abnormal state.

  In the drying process performed after the rinsing process is completed, water is not jetted from the nozzles, so that there is no possibility that water will jump out of the machine or be applied to the user even if the washing cabinet 2 is suddenly drawn. However, since there is a possibility that high-temperature air will flow out from the inside of the washing cabinet 2, the door lock state is maintained until the end of the operation as in the case of the washing operation or the rinsing operation. However, unlike the washing operation and the rinsing operation, it is not necessary to provide a waiting time for the water adhering to the lower surface of the upper lid 10 to sufficiently fall, and therefore processing corresponding to steps S3 to S5 in the flowchart of FIG. After the operation of the blower motor 48 is stopped (the operation of the heater 12 may be stopped simultaneously) as a process corresponding to step S2, the door lock is released. Of course, the door lock may be released after an appropriate time has elapsed, such as waiting until the rotational speed of the blower fan of the blower motor 48 is reliably reduced. A waiting time shorter than the predetermined time is sufficient. Therefore, the user can pull out the washing chamber 2 without waiting for a long time after the user operates the pause key, and the user is not frustrated.

  Furthermore, in this dishwasher, in order to increase safety, once the door lock as described above is applied, the door lock cannot be released even if the pause key is pressed or the drying operation is finished. Such a mode can be set. Such a special mode may be set by performing a special (that is, not normally used) operation key on the operation unit 42, or dedicated to a position that is difficult to see separately from the operation unit 42. The button may be provided.

  Once this special mode is set, the door lock has priority over the operation or operation process that should originally release the door lock as described above. Therefore, for example, when the user wants to pull out the washing cabinet 2 during the washing operation, the user can operate the special key operation or the special button operation before operating the pause key or after operating the pause key. Cancel this special mode. Unless this release is performed, the door lock is not released. The same applies at the end of drying. By providing such a special mode, for example, it is possible to prevent a small child from operating the dishwasher without permission, pulling out the washing cabinet 2, and taking out the dish contained therein, etc. High safety can be ensured.

  Furthermore, this dishwasher has a reserved operation function that can automatically start washing operation after a predetermined time or a predetermined time has passed since the present time so that dishwashing can be performed while sleeping or going out. Yes. When this reserved operation function is used, characteristic processing is executed by the control unit 40. Next, this process will be described with reference to FIGS. FIG. 21 is a front view of the main part of the operation panel 14 of the dishwasher, and FIG. 22 is a flowchart showing the processing contents.

  When performing the reserved driving, the user sets how many hours later from the present time the driving is started by the operation unit 42 (step S11). When the user presses the start key 14a after appropriately setting (step S12), the reservation content at that time is fixed (step S13). Before the reservation is confirmed and immediately after the reservation is confirmed, the control unit 40 sets the LED 14b indicating that the reserved operation of the display unit 43 is set and the LED 14c indicating the remaining time until the start of operation at a 1/3 duty ratio. Dynamic lighting. At this time, the LEDs 14b and 14c are lit brightly as shown in FIG.

  When 5 seconds have elapsed since the reservation was confirmed (“Y” in step S14), the control unit 40 further reduces the dynamic lighting duty ratio to 1/2 or 1/4 (that is, 1/6 or 1/12 duty). Ratio). As a result, although the LEDs 14b and 14c are lit as shown in FIG. 21B, the apparent brightness (luminance) of the display is greatly reduced. Of course, the power consumption is greatly reduced accordingly (step 15). Therefore, even if the dishwasher is placed in a dark room, it is not so dazzling. For example, even when the user goes to bed in that room, it does not disturb bedtime. Further, since the brightness is high enough to allow the display contents to be visually recognized by a normal user in a dark room, it is possible to check the remaining time until the reserved operation starts and the set contents.

  However, when the room is bright, there may be a situation where the contrast is lowered and the display is difficult to see. In that case, the user presses the reservation key 14d (step S16). Then, in response to this operation, the control unit 40 restores the dynamic lighting duty ratio for 5 seconds (steps S17, S18, S19). Thereby, since the display is temporarily brightened, the setting contents can be confirmed even in a bright room or a person with weak vision. If the operation start time has arrived (step S20), a predetermined operation is started (step S21).

  In the dishwasher, if such a time until the start of operation is long, the dirt adhering to the tableware is dried and very difficult to remove. Therefore, it is preferable to carry out the control so as to wet the dishes by performing the washing operation once every several tens of minutes for about several tens of seconds. In such a configuration where the operation is intermittently performed with a long standby time, if there is a person other than the person who instructed the reserved operation around the dishwasher when the display is completely turned off, the stopped state There is a high possibility of misunderstanding that it is a malfunction such as a failure when the dishwasher that was thought to be in operation is suddenly started. In contrast, in this dishwasher, although the brightness of the display is reduced, it is lit so that the user can recognize it, so that the people around it are set for reserved operation or at least in some operation standby state. For example, even if a cleaning operation is temporarily performed, there is no misunderstanding that it is a failure or the like.

  In steps S17 to S18, the brightness is increased only for 5 seconds. However, the brightness may be continuously increased until the reservation key is pressed again. Moreover, you may make it respond | correspond to key operations other than a reservation key.

  Next, a dishwasher according to another embodiment of the first invention will be described with reference to the drawings. FIG. 16 is a schematic side sectional view showing the overall configuration of the dishwasher of this embodiment (hereinafter referred to as “second embodiment”), and FIG. 17 is a front perspective view. Constituent elements that are the same as or correspond to those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted. The main points of the dishwasher differing from the above embodiment are the vertical movement mechanism of the upper lid 10 and the drawer mechanism of the washing cabinet 2.

  That is, in the dishwasher of the second embodiment, the upper lid 10 is urged substantially vertically upward by a plurality of springs 60 having one end fixed to the lower surface of the upper wall of the housing 1. Thus, wires 61a and 61b are provided on the front and rear sides, respectively. The two wires 61a and 61b are wound around pulleys 62a and 62b protruding from the side surface of the upper lid 10, one end is fixed by a fixed end 63 inside one side wall of the casing 1, and the other end is fixed to the casing. Along the other side wall of 1 is fixed to an operating rod 64 that is long in the horizontal direction. Further, the operating rod 64 is connected to the torque motor 66 by a common wire 65 fixed near the center thereof. When the torque motor 66 pulls the common wire 65, the two wires 61 a and 61 b are pulled downward via the operation rod 64, and are pulled down so as to press the upper lid 10 against the biasing force of the spring 60. Then, the upper lid 10 stops at a position where the upper surface opening 3 of the cleaning cabinet 2 is closed.

  Prior to pulling out the washing chamber 2, the torque motor 66 relaxes the common wire 65 and relaxes both the wires 61 a and 61 b via the operation rod 64. Then, the upper lid 10 is raised by the urging force of the spring 60, and is raised to a position where the relaxed wires 61a and 61b are tensioned (or a position where the compression force of the spring 60 and the weight of the upper lid 10 are balanced) and stopped. That is, in the dishwasher of the second embodiment, the washing cabinet 2 is removed from the housing 1 by electrically controlling the torque motor 66, not mechanically interlocking with the drawer and push-in operations of the washing cabinet 2. The upper lid 10 is raised before being pulled out, and the upper lid 10 is lowered after the cleaning cabinet is pushed into the housing 1. When such a vertical movement mechanism of the upper lid 10 is used, the upper lid 10 hardly moves back and forth, so that it is not necessary to secure a space in the housing 1 for the upper lid 10 to move in the front-rear direction. The depth of 1 can be reduced, or the washing cabinet 2 can be expanded while keeping the size of the housing 1 as it is.

  In the dishwasher of the second embodiment, the drawer mechanism of the washing cabinet 2 is not a manual latch device using an operating lever as in the first embodiment, but a handle for pulling out and pushing in the washing cabinet 2. A latch / lock device 70 interlocked with is adopted.

  18 is a side sectional view showing the configuration of the latch / lock device 70, FIG. 19 is a top view showing the latch / lock device 70, and FIG. 20 is a side sectional view showing the configuration of the door opening / closing switch.

  A rotating body 71 having a grip portion 712 for receiving the inserted finger is provided inside the handle portion 13 so as to be rotatable about a horizontal shaft 711. The rotating body 71 has a rib 713 extending in the vertical direction on the opposite side of the grip portion 712 across the shaft 711 and a cylindrical protrusion 714 on the upper portion thereof. On the other hand, a slide lever 73 that is movable in the vertical direction along a guide frame 721 that is a part of the solenoid mounting plate 72 is provided below the opening 2c that opens in the front edge upper portion 2b of the cleaning cabinet 2. A horizontal rib 733 below the slide lever 73 is sandwiched between the upper end of the rib 713 of the rotating body 71 and the cylindrical protrusion 714. Thereby, in the normal state, as shown in FIG. 18, the rotating body 71 pushes up the slide lever 73, and the upper engaging piece 731 protrudes upward from the opening 2c. If the cleaning cabinet 2 is housed in the housing 1, the front frame 1 a of the housing 1 is positioned in front of the engagement piece 731, and the engagement piece 731 contacts the front frame 1 a. This prevents the washing cabinet 2 from being pulled out.

  As shown in FIG. 16, the dishwasher is biased forward by a spring 67, which is an elastic body provided behind the washing cabinet 2, so that the engaging piece 731 is pressed against the front frame 1a. It doesn't rattle. Of course, instead of the spring 67, an elastic member for biasing the cleaning cabinet 2 forward may be provided at an appropriate location. For example, an elastic body is disposed on the rail 5 for pulling out the cleaning cabinet 2 forward and other portions corresponding thereto so as to repel the pushing force at the final point of pushing the cleaning cabinet 2 into the housing 1. It is good to leave.

  When the user inserts a fingertip into the handle portion 13 and pushes up the gripping portion 712 of the rotating body 71, the rotating body 71 rotates about the shaft 711 in the clockwise direction in FIG. 18, and the cylindrical protrusion 714 moves in the horizontal direction. When the rib 733 is pushed down, the slide lever 73 is lowered to a position where the engagement piece 731 is disengaged from the front frame 1 a of the housing 1. Therefore, the user can pull out the washing chamber 2 forward from the housing 1. Conversely, when the cleaning cabinet 2 that is pulled out from the housing 1 is pushed in, the gripping portion 712 may be pushed up to lower the engaging piece 731 as well, but the washing cabinet 2 is pushed in as it is. Even in this case, the rear part of the engagement piece 731 has an inclined shape as shown in FIG. 18, and therefore, when it comes into contact with the lower edge of the front frame 1 a of the housing 1, a part of the force due to the contact is lowered. In response to this, the slide lever 73 descends itself and passes through the front frame 1a, and then rises again to engage the engagement piece 731 behind the front frame 1a.

  Thus, in the dishwasher of the second embodiment, inserting a finger into the handle portion 13 and lifting the grip portion 712 corresponds to rotating the operation lever in the first embodiment to the latch release position, A latch is hung so that the cleaning cabinet 2 cannot be pulled forward from the housing 1 if no operation is performed.

  Furthermore, the locking of the operating lever in the latched state in the first embodiment is achieved by preventing the rotation of the rotating body 71 around the shaft 711 in this second embodiment. That is, as shown in FIG. 19, the plunger 741 of the solenoid 74 is connected to a so-called double knock type (Kern knock type) drive mechanism 75, thereby energizing the solenoid 74 for a short time and Each time it is pulled, the stopper 751 moves between the two positions. As the drive mechanism 75 using the double knock method, the one proposed by the present applicant as a lid locking mechanism for a washing machine in Japanese Patent Application No. 2000-17334 can be used.

  When the stopper 751 is present at the position L6 shown in FIG. 19, the contact piece 715 of the rotating body 71 does not contact the stopper 751, so that the rotating body 71 can rotate. When the solenoid 74 is energized from this state, the stopper 751 moves to a position L7 that interferes with the contact piece 715 of the rotating body 71. Thereby, even if the user tries to lift the grip portion 712, the contact piece 715 of the rotating body 71 contacts the stopper 751, and the rotating body 71 cannot be sufficiently rotated. For this reason, the engagement piece 731 hardly descends and the withdrawal of the cleaning cabinet 2 is prohibited.

  When the stopper 751 is at the position L6, the pressing piece 753 does not interfere with the movable element 761 of the lock detecting micro switch 76, and the pressing piece 753 that moves by the same distance as the stopper 751 moves to the position L7 is movable. Since 761 is pushed in, it can be recognized whether the door is locked or unlocked by opening or closing the switch 76.

  In the dishwasher of the second embodiment, if the washing cabinet 2 is housed in the housing 1 (more specifically, if the user does not lift the grip portion 712), the door Can be considered latched. Therefore, instead of the latch detection switch provided in the first embodiment, a switch for detecting whether or not the cleaning cabinet 2 is housed in the housing 1 is provided. That is, as shown in FIG. 20, a rotating body 77 is provided between the standing wall 2 d of the cleaning cabinet 2 and the inclined surface portion 4 a of the front panel 4 so as to be rotatable about a horizontal shaft 711. The rotating body 77 has a contact surface 772 facing the opening 2e provided on the standing wall 2d and a pressing surface 773, and a movable element 781 of the micro switch 78 is located below the pressing surface 773.

  When the cleaning cabinet 2 is housed in the housing 1, the pin 1 b protruding forward from the front frame 1 a of the housing 1 is inserted into the opening 2 e and presses the contact surface 772 of the rotating body 77, thereby rotating the rotating body 77. Rotates counterclockwise in FIG. Thereby, the pressing surface 773 pushes the mover 781 of the micro switch 78, and the switch 78 is closed or opened. When the cleaning cabinet 2 is pulled out from the housing 1, the rotating body 77 is rotated in the clockwise direction, the pressing of the movable element 781 is released, and the switch 78 is opened or closed. In this way, the switch 78 functions as a door switch corresponding to the operation of pulling out or pushing in the cleaning cabinet 2.

  In this way, in the dishwasher of the second embodiment, the door is unlatched and latched in conjunction with the gripping operation of the door handle by the user and the unlocking of the operation. This saves you the trouble of turning the lever. In addition, the upper lid 10 is not operated by using a part of the operation force in conjunction with the operation of putting in and out the cleaning cabinet 2, but is driven in a state where the cleaning cabinet 2 is stored in a predetermined position in the housing 1. Since it moves up and down by the driving force of the torque motor 66 as a means, the force required to put in and out the cleaning cabinet 2 can be reduced by that much, and in this respect as well, high operability can be provided to the user.

  In the second embodiment, the locking operation and the release thereof can be achieved by the same drive mechanism using the heart cam as in the first embodiment.

  Moreover, the said Example is only an example, and it is clear that it can change and correct suitably in the range of the meaning of this invention.

The side surface schematic sectional drawing in the state which accommodated the washing | cleaning cabinet in the housing | casing in the dishwasher by one Example (1st Example) of 1st, 2nd invention. Side surface schematic sectional drawing which shows the movement state at the time of pulling out a washing store | warehouse | chamber from a housing | casing in the dishwasher by 1st Example. The front external view of the dishwasher by 1st Example. The top view of the principal part of the latch apparatus in the state which does not attach the drip-proof board in the dishwasher by 1st Example. The top view of the principal part of the latch apparatus in the state which attached the drip-proof board in the dishwasher by 1st Example. The upper side figure of the principal part which shows the positional relationship of the hinge lever and latch lever in the latch apparatus in the dishwasher by 1st Example. Side surface sectional drawing which shows the detailed structure of the latch apparatus in the dishwasher by 1st Example. The top view which shows the detailed structure of the locking device in the dishwasher by 1st Example. Side surface longitudinal cross-sectional view of the principal part of the locking device in the dishwasher by 1st Example. The top view of the principal part which shows the structure of the latch detection switch in the dishwasher by 1st Example. The side view of the principal part which shows the structure of the latch detection switch in the dishwasher by 1st Example. The top view of the principal part which shows the relationship between the latch lever and lock shaft in the dishwasher by 1st Example. The front view of the handle cover attached inside the handle part in the dishwasher by 1st Example. The electric system block diagram of the principal part of the dishwasher by 1st Example. The flowchart which shows the process regarding the drawer | drawing-out of the washing store | warehouse | chamber in washing operation in the dishwasher by 1st Example. The schematic side sectional drawing which shows the whole structure of the dishwasher by other Example (2nd Example) of 1st invention. The front perspective view of the dishwasher by 2nd Example. Side surface sectional drawing of the principal part which shows the structure of the latch / lock apparatus in the dishwasher by 2nd Example. The top view of the principal part which shows the latch / lock apparatus in the dishwasher by 2nd Example. Side surface sectional drawing of the principal part which shows the structure of the door opening / closing switch in the dishwasher by 2nd Example. The front view of the principal part of the operation panel in the dishwasher by 1st Example. The flowchart which shows the processing content of the reservation driving | operation in the dishwasher by 1st Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing | casing 1a ... Front frame 1b ... Pin 1c ... Latch hole 1d ... Edge edge part 2 ... Cleaning chamber 2a ... Front wall 2b ... Front edge upper part 2c, 2e ... Opening wall 3 ... Standing wall 3 ... Upper surface opening 4 ... Front Panel 4a ... Slope 4b ... Opening 5 ... Rail 8 ... Cleaning and drainage pump 10 ... Upper lid 11 ... Parallel link 13 ... Handle part 14 ... Operation panel 15 ... Handle receiving member 151 ... Notch 20 ... Latch device 21 ... Operation lever 211 ... Fixed shaft 212 ... Dripping piece 214 ... Vertical portion 22 ... Mounting plate 221 ... Shaft 222 ... Fixed piece 223 ... Opening 23 ... Latch lever 231 ... Engagement piece 24 ... Hinge lever 241 ... Shaft 242 ... Contact piece 243 ... Locking Piece 25 ... Latch spring 251 ... Hook 26 ... Hinge spring 27 ... Drip-proof plate 271 ... Wall 272 ... Flowing portion 273 ... Recess 30 ... Lock device 31 ... Case 32 ... Solenoid 321 ... Plunger 33 ... Drive mechanism 3 1 ... lock shaft 34 ... lock detection switch (micro switch)
341, 351 ... Movable element 35 ... Latch detection switch (micro switch)
352 ... movable piece 37 ... switch mounting plate 371 ... contact piece 40 ... control part 42 ... operation part 43 ... display part 44 ... buzzer 61a, 61b ... wire 62a, 62b ... pulley 63 ... fixed end 64 ... operation rod 65 ... common Wire 66 ... Torque motor 70 ... Latch / lock device 71 ... Rotating body 711 ... Horizontal shaft 712 ... Holding part 713 ... Rib 714 ... Cylindrical protrusion 715 ... Contact piece 72 ... Solenoid mounting plate 721 ... Guide frame 73 ... Slide lever 731 ... engagement piece 733 ... rib 74 ... solenoid 741 ... plunger 75 ... drive mechanism 751 ... stopper 753 ... pressing piece 76, 78 ... micro switch 761, 781 ... movable element 77 ... rotating body

Claims (2)

A housing having a front frame body, an opening on the front surface, a cleaning chamber having an upper surface opening and being freely drawable forward from the front opening of the housing; and when the cleaning chamber is stored in the housing An upper lid that closes the upper surface opening of the cleaning cabinet, a front panel attached to the front wall of the cleaning cabinet to close the front opening of the housing, and a user recessed inwardly at the top of the front panel A handle portion into which the fingertip can be inserted, a rotating body that is provided inside the handle portion and that rotates when a user's fingertip is inserted into the handle portion, and the cleaning cabinet is housed in the housing When engaged, it engages with the front frame of the casing to prevent the cleaning cabinet from being pulled out of the casing, and the rotating body rotates to a position where the engagement is disengaged from the front frame of the casing. Pulling down the washing cabinet from the housing by descending with movement A slide lever that can be moved, and a lock for preventing the wash cabinet from being pulled out by preventing the slide lever from being lowered, and a lock for preventing the wash chamber from being pulled out by allowing the slide lever to be lowered. A lock device for releasing the door, a door switch for detecting whether or not the washing cabinet is housed in the housing, a tableware bowl installed in the washing cabinet for storing dishes, and the tableware A plurality of nozzles for injecting washing water to the dishes to remove dirt on the dishes stored in a basket are formed, and an arm rotatably disposed at the bottom of the washing cabinet, and pumping washing water to the arms A cleaning pump that controls the operation of the cleaning pump and the like, and a control unit that performs each process of rinsing and drying, and an operation unit that gives various settings and instructions to the control unit,
The slide lever comes into contact with the front frame of the casing when the cleaning cabinet is pushed into the casing, and descends by receiving a part of force due to the contact, and the front frame of the casing After passing, the rear is raised again to engage the back of the front frame in order to prevent the cleaning cabinet from being pulled out of the housing,
The control unit detects that the cleaning chamber is stored in the housing, and the door switch detects that the cleaning chamber is stored in the housing, and then operates the lock device to lower the slide lever. Blocking and locking the withdrawal prevention state of the washing cabinet, starting operation of the washing pump and the like, washing, causing each process of rinsing and drying to be performed,
When the control unit receives an operation instruction for temporary stop from the operation unit during the washing process or the rinsing process, the control unit should stop the operation of the cleaning pump and the like and allow the slide lever to be lowered. The dishwasher, wherein the lock device is operated to release the lock in the drawer-preventing state of the washing cabinet. 2. The control unit according to claim 1, wherein after the predetermined time has elapsed after the operation of the cleaning pump is stopped, the control unit operates the lock device to release the lock in the state where the cleaning cabinet is not pulled out. dishwasher.

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