JP2018094415A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher which corresponds to diversified design of a system kitchen, which allows a door body to be drawn to a position in which storage of dishes can be easily performed even in the case where the door body covering a front surface of the dishwasher does not include an operation switch, and which has good usability.SOLUTION: A dishwasher includes: a housing 31 having a front opening 32 on a front surface; a dish basket 47, provided in the housing 31 so as to be put in/taken out, for storing dishes; a movement part including a door body 40 for covering the front opening 32; a support mechanism for supporting the door body 40 in the housing 31 in a state of being movable frontward/backward; a driving device 51 having a drive motor 52 for moving the door body 40; and a control part 44 for controlling the drive of the drive motor 52. A locking part is provided so that the movement part stops at a predetermined position. The control part 44 can draw the movement part automatically to a position in which dishes can be stored, by the drive motor 52. Thereby, the dishwasher with good usability can be provided.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a built-in type dishwasher for cleaning and drying dishes.

  Conventionally, the dishwasher provided with the structure shown in FIG. 11 is disclosed (for example, refer patent document 1). FIG. 11 is a side longitudinal sectional view of a conventional dishwasher. The main body 14 of the dishwasher has an open front. Inside the main body 14, a cleaning tank 15 whose upper surface is opened is provided so that it can be drawn forward. In addition, the dashed-dotted line shown in FIG. 11 shows the state by which the washing tank 15 was pulled out.

  In the dishwasher, the washing nozzle 8, the dish basket 4, and a heater (not shown) are provided inside the washing tank 15. The cleaning pump 7 and the water supply valve 9 are provided outside the cleaning tank 15. The water supply valve 9 is connected to the water supply and introduces the tap water to be the cleaning water into the cleaning tank 15. The cleaning pump 7 circulates the cleaning water stored in the cleaning tank 15. The cleaning nozzle 8 is rotatably provided in the cleaning tank 15 and injects cleaning water pumped by the cleaning pump 7. The tableware basket 4 is detachably provided in the cleaning tank 15. The tableware basket 4 holds the stored tableware 3. The tableware basket 4 is configured so that the cleaning water sprayed from the cleaning nozzle 8 efficiently hits the tableware 3. A heater (not shown) heats washing water or drying air.

  The cleaning tank 15 includes a slide rail 16 on the outer side surface. The main body 14 includes a slide rail 17 on the inner side surface. The slide rail 16 slides while being held by the slide rail 17. The cleaning tank 15 is supported by the main body 14 via the slide rail 16 and the slide rail 17 of the main body 14. Thereby, the washing tank 15 can be pulled out from the main body 14 and pushed into the main body 14. The inner lid 21 is provided at the upper part in the main body 14 and is disposed so as to close the opening on the upper surface of the cleaning tank 15. That is, the inner lid 21 is configured to close the opening on the upper surface of the cleaning tank 15 via the packing 22 when the cleaning tank 15 is accommodated in the main body 14.

  The cleaning tank 15 includes a door 23 at the front. The door 23 covers the opening on the front surface of the main body 14 when the cleaning tank 15 is accommodated in the main body 14. The door 23 has a handle portion 24 and an operation switch in the upper front portion. The handle portion 24 is used when the user hangs his / her hand to pull out or push in the cleaning tank 15. The operation switch is operated by a user, and washing operations such as a washing step, a rinsing step, and a drying step of the dishwasher are set.

  The cleaning tank 15 includes a rack gear 18 in which gear teeth are formed in a straight line at a lower portion. At this time, the length of the rack gear 18 is configured to be longer than the stroke in which the cleaning tank 15 is pulled out from the main body 14. A drive motor 19 having a speed reduction mechanism is fixed to the main body 14. A gear 20 that meshes with the rack gear 18 is attached to the motor shaft of the drive motor 19. The drive motor 19 is configured to be capable of normal rotation or reverse rotation. The cleaning tank 15 is driven by the drive motor 19 via the rack gear 18. As described above, the conventional dishwasher is configured.

  Below, operation | movement of a dishwasher provided with the said structure is demonstrated.

The user first pulls out the cleaning tank 15 from the main body 14 and sets the tableware 3 in the cleaning tank 15. At this time, the cleaning tank 15 can be pulled out by the user himself / herself by pulling the handle 24 or the user can operate the operation switch to pull out the cleaning tank 15 by driving the drive motor 19. is there. Therefore, in the following, a dishwasher having a configuration in which the washing tank 15 is automatically pulled out by driving the drive motor 19 will be described as an example.

  Specifically, when the user operates the operation switch, the control device (not shown) rotates the drive motor 19 forward at a constant speed and rotates the gear 20 attached to the motor shaft in a predetermined direction. Let At this time, the rotational force of the gear 20 acts to push out the meshed rack gear 18. Thereby, the washing tank 15 comes out from the inside of the main body 14 to the front surface while the slide rail 16 and the slide rail 17 slide. When the cleaning tank 15 comes to an arbitrarily set position such as a position where the tableware 3 can be accommodated, the control device stops the drive motor 19 and stops the movement of the cleaning tank 15.

  Next, the user places the tableware 3 in the tableware basket 4 in the cleaning tank 15 and puts detergent into the cleaning tank 15. At this time, the tip of the drawn washing tank 15 is lowered by the weight of the stored tableware 3.

  Next, when the user operates the operation switch, the control device rotates the drive motor 19 in the reverse direction. At this time, the rotational force of the gear 20 acts to retract the meshed rack gear 18. Thereby, the washing tank 15 is drawn into the main body 14 and accommodated while the slide rail 16 and the slide rail 17 slide. When the cleaning tank 15 is accommodated in the main body 14, the control device drives the inner lid 21. Thereby, the upper surface opening of the cleaning tank 15 is closed by the inner lid 21.

  Next, the user operates the operation switch to set a washing course, and starts the washing operation of the dishwasher. Accordingly, the control device controls the cleaning pump 7, the water supply valve 9, the heater, the drainage pump (not shown), and the like, and cleans the tableware 3 stored in the tableware basket 4. At this time, the control device controls each of the above elements so as to perform a cleaning operation set in the order of, for example, a washing step, a rinsing step, and a drying step.

  When the cleaning operation is finished, the user takes out the tableware 3. Specifically, the user operates the operation switch in the same manner as before the cleaning operation. Accordingly, the control device rotates the drive motor 19 and pulls out the cleaning tank 15 to a predetermined position. At this time, the tableware 3 accommodated in the washing tank 15 is pulled out without contacting each other by the smooth rotation of the drive motor 19. As described above, the conventional dishwasher operates.

  In the conventional dishwasher, a decorative panel of the same design made of the same material as the door and drawer of the system kitchen is attached to the lower front portion of the door 23. This decorative panel improves the design of the system kitchen.

JP 2002-345712 A

  However, the handle, operation switches, and the like are usually configured with a dishwasher-specific design. Therefore, designs such as the handle portion 24 and the operation switch cannot be matched completely with the design of the system kitchen.

In addition, in recent years, there is a dishwasher that drives a drawer having a novel design that is omitted to the handle portion by an electric motor or the like in the design of a diversified system kitchen. for that reason,
These designs also need to match the design of the system kitchen to be incorporated.

  Furthermore, there are not only drawers such as furniture, but there are also dishwashers equipped with a mechanism that pushes out the drawers slightly, such as push rods used for drawers and doors of household appliances such as refrigerators. . However, in the case of a dishwasher having these configurations, the amount of drawer opening (the amount of drawer) is small. Therefore, it is necessary for the user to further pull out to a desired position by placing a hand on the drawer.

  Therefore, the dishwasher described in Patent Literature 1 describes a configuration in which when the washing tub is pulled out to a set position, the drive motor is stopped to stop the movement of the washing tub. Furthermore, Patent Document 1 suggests that the amount of drawer of the cleaning tank is opened to a sufficient position so that the tableware can be set immediately.

  However, the dishwasher of Patent Document 1 does not disclose the setting and control of the stop position of the washing tank.

  Moreover, when pulling out a washing tank via a drive motor, it is necessary to control so that a control apparatus etc. which exist in front of a door, for example, a user, and another object do not arise. However, these controls are not disclosed.

  The present invention adapts to the diversified design of the system kitchen, and even when there is no operation switch on the door body covering the front of the dishwasher, the door body and the washing tank are pulled out to a position where the tableware can be easily accommodated, which is easy to use. Provide a dishwasher.

  The dishwasher according to the present invention includes a housing having a front opening on the front surface, a tableware cabinet that is detachably provided in the housing and accommodates tableware, and a moving unit including a door that covers the front opening. Furthermore, the dishwasher includes a support mechanism that supports the moving unit on the housing in a state in which the moving unit can move back and forth, a driving device that includes a driving unit that moves the moving unit at least in the forward or backward direction, And a control unit that controls driving, and a locking unit is provided so that the moving unit stops at a predetermined position.

  According to this configuration, the dishwasher can automatically pull out the moving unit by the driving device to the position where the tableware can be stored even when the door covering the front surface has no operation unit. This improves the usability of the dishwasher. It can also be easily adapted to diversified system kitchen designs.

  ADVANTAGE OF THE INVENTION The dishwasher of this invention can provide the user-friendly dishwasher which can accommodate a tableware in a washing tank easily, even when there is no operation part in a door.

Side surface longitudinal cross-sectional view of the dishwasher in Embodiment 1 of this invention Side longitudinal sectional view of the dishwasher in the same embodiment Side surface longitudinal cross-sectional view of the dishwasher in Embodiment 2 of this invention Side longitudinal sectional view of the dishwasher in the same embodiment Side surface longitudinal cross-sectional view of the dishwasher in Embodiment 3 of this invention The perspective view of the dishwasher in Embodiment 4 of this invention Front longitudinal sectional view of the dishwasher in the same embodiment 7 is an enlarged view of the main part of FIG. Side surface longitudinal cross-sectional view of the dishwasher in other embodiment of this invention Side surface longitudinal cross-sectional view of the dishwasher in other embodiment of this invention Side view of a conventional dishwasher

  A dishwasher according to a first aspect of the present invention includes a housing having a front opening on the front surface, a tableware basket that is provided in and out of the housing and accommodates tableware, and a moving unit including a door that covers the front opening. Prepare. Furthermore, the dishwasher includes a support mechanism that supports the moving unit on the housing in a state in which the moving unit can move back and forth, a driving device that includes a driving unit that moves the moving unit at least in the forward or backward direction, And a control unit that controls driving, and a locking unit is provided so that the moving unit stops at a predetermined position.

  According to this configuration, the dishwasher can automatically pull out the moving unit by the driving device to the position where the tableware can be stored even when the door covering the front surface has no operation unit. This improves the usability of the dishwasher. Furthermore, it can be easily adapted to diversified system kitchen designs.

  According to a second aspect of the invention, particularly in the first aspect of the invention, the control unit is configured to stop driving of the driving unit when detecting the stop of the moving moving unit. According to this configuration, the dishwasher can automatically pull out the moving unit by the driving device to the position where the tableware can be stored even when the door covering the front surface has no operation unit. This improves the usability of the dishwasher. Furthermore, it can be adapted to the design of the diversified system kitchen. In addition, when the moving unit is stopped at a predetermined position, the time during which the driving unit is locked is shortened. Therefore, an excessive load is not applied to the drive unit. Furthermore, even when the moving unit collides with an obstacle and stops, it is possible to prevent the occurrence of a defect with respect to the obstacle.

  In a third aspect of the invention, particularly in the second aspect of the invention, the control unit is configured to monitor the current of the driving unit and detect the stop of the moving unit by a change in the current. According to this configuration, the control unit detects an increase in current that occurs when the moving unit stops due to some load. Thereby, the control part can stop a drive part in a short time.

  According to a fourth aspect of the invention, in particular, in the second aspect of the invention, the sensor includes an acceleration detection sensor, and the control unit monitors the acceleration of the moving unit by the sensor, and detects the stop of the moving unit by the magnitude or change of the acceleration. It is comprised as follows. According to this configuration, the control unit detects the magnitude or change of acceleration when the moving unit stops due to some load. Thereby, the control part can stop a drive part in a short time.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, when the control unit detects contact with an obstacle or generation of a load while the moving unit is moving, the driving unit Is configured to stop. According to this structure, generation | occurrence | production of the malfunction with respect to the obstruction which contacted the moving part can be prevented. Further, even when the user intentionally knocks the door, the control unit can immediately stop driving the drive unit.

  According to a sixth aspect of the invention, in the fifth aspect of the invention, in the fifth aspect, the controller monitors the current of the drive unit, and detects the occurrence of contact with an obstacle or the occurrence of a load while the moving unit is moving due to a change in current. You may comprise. According to this configuration, the control unit detects an increase in current when the moving unit is in contact with an obstacle or a load is generated. Thereby, the control part can stop a drive part in a short time.

In a seventh aspect of the invention, in the fourth aspect of the invention, the sensor is configured to detect vibration with acceleration, and the control unit monitors the acceleration of the moving unit with the sensor, and the moving unit is moving due to a change in acceleration. In addition, it is configured to detect contact with an obstacle or occurrence of a load. According to this configuration, the control unit detects a change in acceleration when the moving unit is contacted with an obstacle or a load is generated. Thereby, the control part can stop a drive part in a short time.

  In an eighth aspect of the invention, particularly in any one of the first to seventh aspects of the invention, the drive device includes a drive unit, a pinion gear driven by the drive unit, and a rack gear meshing with the pinion gear, The drive unit is configured to be fixed to the inside of the housing such that the pinion gear is positioned in the vicinity of the front opening, and the rack gear is fixed to the support mechanism. According to this configuration, when the moving unit moves forward and is pulled out and is in a front-lowering state, the vicinity of the pinion gear provided at the front serves as a fulcrum. Thereby, the possibility that the rack gear and the pinion gear are disengaged is low. Therefore, when a mechanism that does not disengage is provided separately, the mechanism can be configured simply.

  In a ninth aspect of the invention, particularly in any one of the first to seventh aspects of the invention, the drive device includes a drive unit, a pinion gear driven by the drive unit, and a rack gear meshing with the pinion gear, The drive unit may be fixed to the rear part of the support mechanism, and the rack gear may be fixed to the inside of the housing. According to this configuration, in the arrangement of the signal line and the power supply line from the control unit to the drive unit, only the processing on the support mechanism side is required without being routed to the housing side. Therefore, design and assembly are facilitated, and maintenance workability is improved.

  According to a tenth aspect of the invention, in particular, in any one of the first to seventh aspects of the invention, the drive device includes a drive unit and a roller driven by the drive unit, and the outer peripheral surface of the roller is a support mechanism. You may comprise so that it may press-contact to the press-contact rail provided in. According to this configuration, the dishwasher can automatically pull out the moving unit by the driving device to the position where the tableware can be stored even when the door covering the front surface has no operation unit. This improves the usability of the dishwasher. It can also be easily adapted to diversified system kitchen designs. Furthermore, at the time of assembly, it is not necessary to worry about the meshing of gears as in the rack and pinion type, and the assembly becomes easy.

  In an eleventh aspect of the invention, particularly in any one of the first to tenth aspects of the invention, the drive device may be configured to move the moving portion at a moving speed of 150 mm / second to 250 mm / second. According to this configuration, the dishwasher can automatically pull out the moving unit by the driving device to the position where the tableware can be stored even when the door covering the front surface has no operation unit. This improves the usability of the dishwasher. It can also be easily adapted to diversified system kitchen designs. In addition, it is possible to give the user high satisfaction without feeling dissatisfied with the moving speed of the moving unit.

  According to a twelfth aspect, in any one of the first to eleventh aspects, the drive device is configured to move the moving unit with a kinetic energy of 0.5 J or less. According to this configuration, even if the moving part is in contact with an obstacle such as a person while moving, or even when a person's hand or finger is pinched during storage, the impact can be mitigated. This improves the safety of the dishwasher.

  In a thirteenth aspect of the invention, in particular, in any one of the first to twelfth aspects of the invention, the control unit is configured to drive the drive unit with two or more steps of different voltages. . According to this configuration, it is possible to reduce a shock applied to the stored tableware when stopped. Thereby, generation | occurrence | production of the noise by the tableware touching and damage to tableware can be prevented beforehand. Moreover, the splash of water stored in the moving cleaning tank can be suppressed. Therefore, it is possible to prevent the water from jumping out of the washing tank or the wetness of the tableware dried after washing.

  In a fourteenth aspect of the invention, particularly in any one of the first to thirteenth aspects of the invention, the control unit is configured to shut off the motor circuit when the drive unit is stopped. According to this configuration, when the user manually moves the moving unit, an abnormal voltage is applied to the printed circuit board of the control unit due to the back electromotive force generated by the idling of the driving unit due to the disconnection from the motor circuit. Can be prevented. Thereby, while being able to reduce the burden on the user at the time of manual operation, a highly reliable dishwasher can be realized.

  In a fifteenth aspect of the invention, in particular, in any one of the first to fourteenth aspects of the invention, the control unit is configured to drive the drive unit to a position where the tableware basket is substantially fully opened upward. Is. According to this configuration, the moving unit can be automatically pulled out by the driving unit. For this reason, the user can easily put in and out the dishes without requiring manual labor.

  In a sixteenth aspect of the invention, in particular, in any one of the first to fifteenth aspects of the invention, a remote controller that transmits an operation signal is provided, and the control unit detects the predetermined operation signal from the remote control. It is to be driven. According to this configuration, the user can operate the dishwasher from a location away from the dishwasher. This further improves the convenience of the dishwasher.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, the dishwasher according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2.

  FIG. 1 and FIG. 2 are views showing a side longitudinal sectional view of a dishwasher in which the washing tub according to Embodiment 1 of the present invention has a drawer. FIG. 1 shows a state where the cleaning tank is housed in the housing. FIG. 2 shows a state where the upper surface opening of the cleaning tank is pulled out from the inside of the housing until it is fully opened. In addition, the dishwasher of this Embodiment is integrated and used for the system kitchen K, for example.

  As shown in FIG. 1, the dishwasher of this Embodiment contains the housing | casing 31, the washing tank 33, the door body 40, the control part 44, the drive device 51, etc. FIG.

  The housing 31 has a front opening 32 having an entire front surface opened. The cleaning tank 33 is movable in the front-rear direction with respect to the casing 31 and is provided so as to be able to be taken in and out from the front opening 32 of the casing 31.

  In the present embodiment, as shown in the figure, the front direction is described as a direction in which the door body 40 and the cleaning tank 33 are pulled out, and the rear direction is described as a direction in which the cleaning tank 33 is stored and the door body 40 is closed. . In the following description, the dishwasher installation side is set to the lower side, the opposite side is set to the upper side, the right side toward the front of the door body 40 is set to the right side, and the left side is set to the left side.

  The housing 31 includes slide rails 31a that are installed in the substantially horizontal direction (including the horizontal direction) on the inner surfaces of the left and right side surfaces. The cleaning tank 33 includes slide rails 34 that are installed in the substantially horizontal direction (including the horizontal direction) on the outer surface sides of the left and right side surfaces. The cleaning tank 33 is supported by the slide rail 31a of the housing 31 via the slide rail 34, and moves along the slide rail 31a. The cleaning tank 33 has an upper surface opening 35 having an entire upper surface opened. And the tableware 36 etc. which are to-be-cleaned objects are accommodated in the tableware basket 47 arrange | positioned in the washing tank 33 through the upper surface opening part 35. FIG.

  An inner lid 37, a parallel link mechanism 38, a seal portion 39, and the like are disposed on the upper portion of the housing 31. The inner lid 37 closes the upper surface opening 35 of the cleaning tank 33. The parallel link mechanism 38 supports the inner lid 37. The parallel link mechanism 38 is composed of, for example, a pair of left and right front and rear, and drives the inner lid 37 in the vertical direction. The seal portion 39 is provided on the outer periphery of the lower surface of the inner lid 37. The seal portion 39 seals the upper surface opening 35 of the cleaning tank 33 when the inner lid 37 is lowered. The parallel link mechanism 38 lifts the inner lid 37 when the cleaning tank 33 is pulled out from the housing 31. Thereby, the inner lid 37 and the seal part 39 are configured not to interfere with the movement of the cleaning tank 33.

  The cleaning tank 33 includes a door 40 at the front. The door body 40 includes an operation panel 41 provided on the front surface of the cleaning tank 33 and a decorative plate 42 attached to the operation panel 41. The decorative plate 42 covers the entire front opening 32 of the housing 31 when the cleaning tank 33 is stored in the housing 31. The decorative plate 42 is made of the same material, the same color, and the same design as the decorative plate that is a door such as a drawer of the system kitchen K. Furthermore, a handle 43 is attached to the decorative plate 42. The handle 43 constitutes a handle portion used when the user pulls out the cleaning tank 33. The same handle as the system kitchen K is attached to the handle 43. Thereby, the whole system kitchen K is comprised by the unified design.

  In addition, depending on the system kitchen K, there is also a system kitchen K having a design constituted only by the decorative plate 42 without providing the handle 43 on the front surface of the door body 40. In the case of this configuration, the cleaning tank 33 including the door body 40 is automatically pulled out via, for example, a driving device. At this time, for example, an upper portion or a side portion of the decorative plate 42 serves as a handle portion and functions as a handle. Therefore, the dishwasher according to the present embodiment does not distinguish between manual operation and automatic operation in the drawer operation of the washing tub 33.

  In the present embodiment, the cleaning tank 33 and the slide rail 34 are exemplified as a support mechanism supported by the housing 31 in a state where the door body 40 can be moved back and forth.

  The control unit 44 is disposed on the back surface of the operation panel 41. The control unit 44 executes the washing operation while controlling all the operations of the dishwasher. The washing operation includes a washing step, a rinsing step, a drying step, and the like. The washing step is a step of removing dirt such as the tableware 36 using a detergent or the like. The rinsing step is a step of removing the detergent attached to the tableware 36 or the like. The drying step is a step of drying the cleaned tableware 36 and the like.

  The control unit 44 is configured by a printed board (not shown) on which a sensor exemplified by the acceleration sensor 45 and the like is disposed. The acceleration sensor 45 detects the magnitude of substantial acceleration of the dishwasher in the three-axis directions of the X axis, the Y axis, and the Z axis. In the dishwasher, the X-axis corresponds to the front-rear direction, the Y-axis corresponds to the left-right direction, and the Z-axis corresponds to the up-down direction. The acceleration sensor 45 detects the direction and magnitude of various accelerations generated in the dishwasher. Specifically, the acceleration sensor 45 detects the direction and magnitude of acceleration generated by the movement of the door body 40 and the cleaning tank 33 moving in the front-rear direction (X axis). Furthermore, the acceleration sensor 45 detects the direction and magnitude of acceleration caused by vibration applied to the door body 40. Therefore, it is desirable that the printed circuit board is securely attached to the operation panel 41 so as not to cause problems in the mounting direction and mechanical strength. Thereby, the acceleration sensor 45 mounted on the printed circuit board can detect the acceleration applied to the dishwasher more reliably and accurately.

That is, the control unit 44 controls the operation of the dishwasher on the basis of the signal related to the direction and magnitude of the acceleration detected by the acceleration sensor 45 and the state of the door body 40 and the washing tub 33 (for example, opening / closing operation). .

  The substantial acceleration is a variation in the mounting angle error and the inclination angle error of the installation in a state where the printed circuit board on which the acceleration sensor 45 is mounted is fixed at a predetermined position in accordance with the triaxial direction. , Means acceptable. At this time, the substantial acceleration includes a case where a predetermined angle is corrected in advance when the printed circuit board is fixed at a predetermined angle. However, the acceleration in the vertical direction and the horizontal direction can be corrected by detecting a deviation from gravity.

  Further, the control unit 44 can detect a deviation between gravity and acceleration in the Z-axis direction. Therefore, when installing the dishwasher, the control unit 44 can be used as a level as will be described later.

  The dishwasher according to the present embodiment is configured such that the user can operate the dishwasher by applying vibration to the door body 40, the washing tub 33, and the like.

  Specifically, there are the following methods for applying vibration.

  For example, there is a method in which the user taps the door with a hand so that the door body 40 is knocked, or taps the door body 40 with a fingertip to apply vibration. There is also a method of applying vibration by tapping the door 40 with a hand held by the user. Furthermore, when the user's hand is wet or the hand cannot be used because of something, there is a method in which the user pushes the door body 40 with an elbow or knee to apply vibration. In short, the method is not particularly limited as long as a predetermined vibration applied to the door body 40 is transmitted to the acceleration sensor 45 and can be detected. In many cases where vibration is applied, vibration is applied to the door body 40 by a method in which sound is generated. Therefore, hereinafter, a configuration in which the door body 40 is knocked to give vibration and the dishwasher is operated will be described as an example.

  In addition, the dishwasher according to the present embodiment includes a drive device 51 inside the housing 31. The drive device 51 includes a drive motor 52 that constitutes a drive unit, a pinion gear 53, a rack gear 54, and the like. The driving device 51 moves the door body 40 and the cleaning tank 33 at least in the forward direction or the backward direction. Specifically, the control unit 44 drives the drive motor 52 of the drive device 51 when receiving a predetermined signal from the sensor exemplified by the acceleration sensor 45 or the like, or the operation unit 46. The sensor is not limited to the acceleration sensor 45 as long as the sensor detects a change such as vibration applied to the door body 40 or the like. For example, an electrostatic sensor that detects that the user has touched the door 40 or the like may be used as the sensor. Thereby, an operation instruction can be easily performed with a simple operation without requiring a force.

  Hereinafter, a basic control operation of the dishwasher according to the present embodiment will be described by taking as an example a configuration for detecting vibration caused by knocking (striking).

  First, the washing tub 33 is accommodated in the housing 31, and the user taps the door body 40, for example, twice from the front, for example, when the dishwasher is in a stopped state. At this time, the acceleration sensor 45 detects vibration applied in the front-rear direction, which is the same as the direction in which the cleaning tank 33 is pulled out. The acceleration sensor 45 outputs the detected predetermined signal to the control unit 44. Thereby, the control part 44 judges that the door body 40 was hit by the user.

  And the control part 44 is controlled to drive the drive motor 52 of the drive device 51. As a result, the moving unit including the door body 40 and the cleaning tank 33 moves forward and is automatically pulled out from the housing 31.

  In addition, although a moving part contains the whole part which drives and moves with a drive part, the component of a moving part differs with the form of a dishwasher. Specifically, in the first to third embodiments, the cleaning tank 33 and the door body 40 are mainly exemplified as the moving unit. However, in Embodiment 4 to be described later, a cleaning space 75 of the cleaning tank 73 is configured in the housing 71. Therefore, although the inner surface of the door body 74 constitutes the front surface of the cleaning tank 73, the cleaning space 75 itself does not move. Therefore, the cleaning tank 73 is not included in the moving unit of the fourth embodiment. Therefore, in Embodiment 4, the door body 74, the lower tableware basket 77, the upper tableware basket 78, and the support mechanism 80 are mainly illustrated as a moving part.

  That is, in Embodiments 1 to 3, the cleaning tank 33 is mainly used, and the cleaning tank 33, or the door body 40 and the cleaning tank 33 are described as the moving unit. On the other hand, in the fourth embodiment, the moving unit is described with the door body 74 as a main component.

  In the dishwasher of the present embodiment, the operation unit 46 is disposed on the front side of the upper surface opening 35 of the cleaning tank 33. The operation part 46 is arrange | positioned, for example on the upper surface of the convex part which protrudes in the housing | casing 31 from the back surface of the decorative board 42 of the door body 40. FIG. Accordingly, the operation unit 46 is accommodated so as to be concealed in the casing 31 when the cleaning tank 33 is accommodated in the casing 31.

  The operation unit 46 includes an operation button (not shown) and a display unit (not shown) such as an LED. The operation button is set to control each step of the cleaning operation by the user. The display unit displays the contents set through the operation buttons with LEDs.

  In the cleaning tank 33, a table basket 47, a cleaning nozzle 48, a heater 49, and the like are further arranged. On the other hand, a cleaning pump 50 and a drying device (not shown) are disposed outside the cleaning tank 33. The cleaning nozzle 48 is rotatably provided in the cleaning tank 33 below the table basket 47. The heater 49 is disposed, for example, in a space between the bottom in the cleaning tank 33 and the cleaning nozzle 48. The heater 49 heats the washing water stored in the washing tank 33 in the washing step and the rinsing step of the washing operation. The heater 49 heats the air in the cleaning tank 33 in the drying step of the cleaning operation. These are disposed inside and outside the cleaning tank 33 together with the door body 40 including the decorative plate 42 and the like, and move in the front-rear direction integrally with the cleaning tank 33.

  The cleaning pump 50 circulates cleaning water. Specifically, the cleaning pump 50 sucks the cleaning water stored in the cleaning tank 33 and jets the cleaning water from the cleaning nozzle 48 toward the tableware 36.

  That is, the moving unit including the cleaning tank 33 is configured to be able to be taken in and out in the front-rear direction by the driving device 51.

  Hereinafter, the drive device 51 of the present embodiment will be described.

  The driving device 51 is configured by a rack and pinion type mechanism that can move the moving unit in and out in the front-rear direction.

  The driving device 51 may be configured by, for example, a method of winding a belt with a pulley or a belt conveyor method. Further, the drive direction may be configured to drive only in the front direction or only in the rear direction. In this case, the direction not driven is driven by the user, for example.

The drive device 51 includes a drive motor 52 that is a drive unit, a pinion gear 53 that is driven by the drive motor 52, a rack gear 54 that meshes with the pinion gear 53, and the like.

  The rack gear 54 is formed by arranging gear teeth in a straight line. The rack gear 54 is fixed to one lower part on the outer side of the left and right side surfaces of the cleaning tank 33 constituting the support mechanism. The rack gear 54 has at least a length equal to or longer than the stroke through which the cleaning tank 33 is drawn. The pinion gear 53 is attached to a motor shaft driven by the drive motor 52. The drive motor 52 includes a speed reduction mechanism (not shown). In the drive motor 52, the pinion gear 53 is fixed inside the housing 31 at a position near the front opening 32.

  The rack gear 54 shown in FIG. 1 is shown in a configuration in which gear teeth are formed downward and meshed with the pinion gear 53, but this is not a limitation. For example, the gear teeth of the rack gear 54 may be formed upward or sideways so as to mesh with the pinion gear 53.

  With the configuration of the rack gear 54 and the pinion gear 53, the rotational motion of the drive motor 52 is converted into a linear motion. The cleaning tank 33 is linearly moved to a position where the upper surface opening 35 is substantially fully opened. Thereby, the tableware basket 47 accommodated in the washing tank 33 is moved to a position where the upper side is substantially fully opened. As the washing tank 33 moves in the forward direction, the washing tank 33 is lowered forward by the weight of the stored tableware 36. At this time, the vicinity of the pinion gear 53 provided in the front opening 32 at the front portion of the housing 31 is a fulcrum of the cleaning tank 33 that is lowered forward. Therefore, the possibility that the rack gear 54 and the pinion gear 53 are disengaged is low. Thereby, even when providing the structure which a meshing does not remove | deviate separately, it can comprise with a simple mechanism.

  As a configuration in which the engagement is not removed, there is a configuration in which, for example, the drive motor 52 including the pinion gear 53 is tilted in accordance with the tilt of the cleaning tank 33. Further, there is a configuration in which the pinion gear 53 is pressed against the rack gear 54 in accordance with the inclination of the cleaning tank 33.

  The speed reduction mechanism provided in the drive motor 52 is configured with a gear ratio or the like that allows the user to easily put in and out the cleaning tank 33 manually.

  In addition, you may provide a well-known clutch mechanism (not shown) or a sliding mechanism (not shown) in the drive device 51 from the drive motor 52 to the rack gear 54 including a speed reduction mechanism. Thereby, the load generated by the drive motor 52 when the user manually moves the cleaning tank 33 in and out is reduced. As a result, the user can take in and out the cleaning tank 33 from the housing 31 with a smaller force. Further, even when the door body 40 of the cleaning tank 33 collides with an obstacle exemplified by a person or an object at the time of pulling out, the cleaning tank 33 is easily stopped by a clutch mechanism, a sliding mechanism, or the like. That is, it can suppress that big force is added with respect to an obstruction. Therefore, it is possible to more effectively reduce the occurrence of defects due to collisions with obstacles. Further, the generation of an excessive current that brings the drive motor 52 into the locked state is suppressed.

  In addition, when moving the washing tank 33 manually, the structure which interrupts | blocks the motor circuit of the drive motor 52 is preferable so that it may mention later. Thereby, the resistance at the time of manually moving the washing tank 33 generated by the drive motor 52 is reduced. As a result, the washing tank 33 can be taken in and out with a smaller force.

In addition, when the cleaning tank 33 is moved in the forward direction, the control unit 44 according to the present embodiment drives the drive motor so that the upper surface opening 35 of the cleaning tank 33 is substantially fully opened as described above. The drive of 52 is controlled. Note that substantially fully open means that the cleaning tank 33 is most drawn out and the upper surface opening 35 is opened most, or the upper surface opening 35 is opened more than half. That is, substantially fully open means that the tableware basket 47 is opened upward and pulled out to the extent that the user can put in and out the tableware 36.

  Therefore, the control unit 44 controls the amount of movement of the cleaning tank 33 by the drive time of the drive motor 52.

  Specifically, as will be described later, the control unit 44 drives the drive motor 52 for a set predetermined time T1 and stops it. Thereby, the washing tank 33 can be stopped at an arbitrary position where the upper surface opening 35 of the washing tank 33 is substantially fully opened.

  According to this configuration, the control unit 44 detects the vibration that the user knocks the door body 40 with the acceleration sensor 45. Thereby, the control part 44 controls the drive motor 52, and pulls out the washing tank 33 to the front automatically. Therefore, the user does not need labor for pulling out the cleaning tank 33.

  That is, the dishwasher of the present embodiment can automatically pull out the washing tub 33 to the position where the tableware 36 can be easily accommodated by the driving device 51. This improves the usability of the dishwasher. Further, the door body 40 covering the front surface can be configured such that the operation unit 46 or the handle 43 can be omitted. Therefore, it can respond more appropriately to the diversified design of the system kitchen K.

  As described above, the driving device 51 of the present embodiment is configured and operates.

  Hereinafter, the control operation based on the predetermined time T1 of the control unit 44 of the present embodiment will be described.

  The predetermined time T1 is set according to the control content of the dishwasher. Specifically, the predetermined time T1 is adjusted according to the moving distance, moving speed, and the magnitude of the torque of the drive motor 52 until the moving speed is reached.

  That is, the user feels that the moving speed is slow if the set time until the cleaning tank 33 is fully opened is too long. On the other hand, if the set time until the cleaning tank 33 is fully opened is too short, the moving speed of the cleaning tank 33 is increased. Therefore, when the washing tank 33 and the obstacle come into contact with each other, there is a possibility that the safety against the obstacle such as a person may be lowered.

  In view of the above, the dishwasher according to the present embodiment is set to a speed of 150 mm / second to 250 mm / second as a standard moving speed of the washing tub 33. In addition, as a user's sense, it is more preferable to set the moving speed to 170 mm / second to 230 mm / second. If the moving speed is set within the above range, the user does not feel that the moving speed of the cleaning tank 33 is slow, and safety can be ensured.

  Here, the standard moving speed means a speed in a constant speed state excluding an acceleration state at the start of the movement of the cleaning tank 33 and a deceleration state before stopping. However, depending on the configuration of the dishwasher, there is a case where a constant moving speed does not exist (cannot be realized). In this case, it is preferable to set the maximum movement speed as a standard movement speed and set the maximum speed to be within the above range. Thereby, the effect similar to the above is acquired.

In addition, when pulling out the washing tank 33 automatically, there exists a possibility of contact | abutting with the person in front of the washing tank 33. FIG. Furthermore, when the cleaning tank 33 is housed in the housing 31, a human hand or finger may be caught. Therefore, it is necessary to consider the moving speed for the safety aspect. In this case, considering the kinetic energy W due to the weight of the cleaning tank 33 and the moving speed is effective in improving safety.

Generally, kinetic energy W is represented by W = (1/2) mv ^2.

  For example, m is the mass of the cleaning tank 33, and v is the moving speed.

  Therefore, in the dishwasher of the present embodiment, the kinetic energy W is set to be 0.5 J or less. The setting of 0.5 J or less reduces the impact even if the door 40 is in contact with a person while the cleaning tank 33 is moving, or if a human hand or a finger is caught in the cleaning tank 33. It is set as a value that can maintain safety. As a result, the occurrence of problems in unexpected situations is prevented.

  Specifically, the setting of 0.5 J or less is defined with a maximum weight of 16 kg and a moving speed of 250 mm / second as the reference for the cleaning tank 33 in which the tableware 36 and the like are accommodated. Therefore, when the maximum weight increases, it is preferable to reduce the moving speed so that the kinetic energy W is 0.5 J or less.

  Furthermore, in the dishwasher of the present embodiment, up to 50% of the upper surface opening 35 of the cleaning tank 33 by driving the drive motor 52 for about 2 seconds including the acceleration period when the cleaning tank 33 starts to move, It is set to be pulled out. The predetermined time T1 for driving the drive motor 52 to draw out the upper surface opening 35 of the cleaning tank 33 most is set to about 3.5 seconds.

  As described above, the drive motor 52 is configured to be able to be driven at an arbitrary set time with the predetermined time T1 as the maximum value. Thereby, according to setting time, the washing tank 33 can be stopped in arbitrary extraction positions. That is, the set time can be adjusted in accordance with the actual usage of the user.

  For example, as a state of use of a dishwasher, there is a case where the dishwasher is installed in a narrow place where an obstacle exists near the front of the dishwasher. In this case, the entire cleaning tank 33 cannot be pulled out. Therefore, the amount of withdrawal of the cleaning tank 33 is set by adjusting the set time. This makes it possible to install a dishwasher even in a small place.

  Moreover, in the dishwasher of this Embodiment, the control part 44 is good also as a structure which drives the drive motor 52 with two or more different step-like voltages.

  For example, a voltage higher than the standard voltage is applied during the acceleration period when the cleaning tank 33 starts to move, and a voltage lower than the standard voltage is applied during the deceleration period immediately before stopping to drive the drive motor 52. As a result, the torque generated by the drive motor 52 is increased when the cleaning tank 33 starts to accelerate. As a result, the acceleration period of the cleaning tank 33 can be shortened. The standard voltage corresponds to an applied voltage when the cleaning tank 33 is moved at a constant speed.

  On the other hand, immediately before stopping the movement of the cleaning tank 33, a voltage lower than the standard voltage is applied to drive the drive motor 52 to reduce its rotation. Thereby, the shock applied to the tableware 36 etc. accommodated in the tableware basket 47 is suppressed. As a result, the contact between the dishes 36 due to the shock can be suppressed, and the generation and breakage of noise can be prevented. Furthermore, the splash of water accumulated in the cleaning tank 33 due to the shock can be reduced. Thereby, the jumping out of the water from the washing tank 33 or the wetness of the dried tableware 36 after washing can be prevented.

In the above description, the case where the drive voltage is controlled in the two stages of starting the movement of the cleaning tank 33 and stopping the movement has been described as an example, but the present invention is not limited thereto. For example, the driving motor 52 may be driven by applying a driving voltage smoothly so that the moving speed changes smoothly in a shorter time. That is, the two or more stepped voltages include a state in which the voltage changes linearly or smoothly. Thereby, the shock applied to the tableware 36 etc. can further be suppressed.

  Further, in the dishwasher of the present embodiment, when the washing tub 33 moves, the movement of the washing tub 33 to a predetermined position may be stopped halfway due to contact with an obstacle such as an object or a person. . In this case, the control unit 44 stops energization to the drive motor 52 after the elapse of the predetermined time T1, and stops driving. Thereby, the locked state in which the rotation of the drive motor 52 stops becomes a short time of the predetermined time T1 at the maximum. Therefore, the lock state of the drive motor 52 is not maintained for a long time. Thereby, the continuation for a long time of the load which forcibly rotates the drive motor 52 is suppressed. As a result, the drive motor 52 can be used safely and stably over a long period of time. Further, the contact between the cleaning tank 33 and an obstacle or a person is eliminated in a short time. Therefore, it is possible to more reliably suppress the occurrence of problems with obstacles or people, and problems with dishwashers.

  Furthermore, in the dishwasher according to the present embodiment, somewhere in the moving part including the door body 40 and the obstacle or in the middle of reaching the predetermined position where the washing tub 33 is set, or unexpected A case where a load is applied is assumed. In this case, it is preferable that the control unit 44 immediately controls the driving motor 52 to stop driving.

  Here, as a method of assuming contact with an obstacle or a person, for example, there is a method in which a change in acceleration is detected by the acceleration sensor 45 and controlled by the control unit 44. Specifically, the acceleration sensor 45 detects an acceleration or a change in acceleration that is equal to or greater than a predetermined threshold in any of the three axes including vibration in the moving direction of the door body 40 while the drive motor 52 is driven. If detected, the control unit 44 stops driving the drive motor 52. In the case of this configuration, the control unit 44 is not limited to the case where it comes into contact with an obstacle, and even if the user knocks the door body 40 intentionally or the child comes in contact from the lateral direction or the vertical direction, the control unit 44 immediately The driving of 52 is stopped. As a result, it is possible to prevent the occurrence of a problem with an obstacle or a person in contact with the moving part and maintain high safety.

  As a method for detecting that an unexpected load is applied, for example, there is a method in which the acceleration sensor 45 monitors the acceleration in all directions and the control unit 44 controls the acceleration. Specifically, when the acceleration sensor 45 detects a change in acceleration that causes the driven door body 40 and the cleaning tank 33 to decelerate or stop, the control unit 44 stops driving the drive motor 52. To do. Note that there is also a method in which the control unit 44 monitors the current during driving of the drive motor 52 and controls the drive motor 52 to stop driving. Specifically, when the control unit 44 detects an increase in current when the door body 40 and the cleaning tank 33 are decelerated or stopped, the control unit 44 stops driving the drive motor 52. Alternatively, when a current of a predetermined value or more flows through the drive motor 52 for, for example, 0.5 seconds or more and the lock state of the drive motor 52 is detected, the control unit 44 stops driving the drive motor 52.

  The above method can be implemented without any particular limitation. Moreover, you may implement the said method in combination. By these methods, the time until the drive of the drive motor 52 is stopped after the movement of the cleaning tank 33 is inhibited is shortened. As a result, not only the malfunction such as overheating of the drive motor 52 but also the influence of the malfunction on the obstacle can be prevented more effectively.

That is, the cleaning tank 33 can be reliably stopped by detecting the change in acceleration or current. Furthermore, the movement of the cleaning tank 33 can be immediately stopped by providing the above-described clutch mechanism or sliding mechanism. Therefore, the above configuration is useful as a method for stopping the cleaning tank 33 when a load of a predetermined value or more is applied to the door body 40 or the drive motor 52.

  Further, in the dishwasher of the present embodiment, the controller 44 is stopped halfway until the washing tub 33 reaches a predetermined position, and when the drive motor 52 is stopped, the motor circuit is turned on as described above. You may block it. Usually, when the cleaning tank 33 stops halfway, the user tries to move the cleaning tank 33 manually forward or backward from the position where the cleaning tank 33 stops. At this time, the drive motor 52 is forced to idle, and a back electromotive force is generated in the drive motor 52. Therefore, when the cleaning tank 33 stops halfway, the motor circuit of the drive motor 52 is shut off. Thereby, generation | occurrence | production of loads, such as an abnormal current which flows into the printed circuit board of the control part 44 by the back electromotive force of the drive motor 52, can be prevented beforehand. Further, since no abnormal current due to the counter electromotive force flows, power generation by the drive motor 52 does not occur. Therefore, the load caused by the power generation of the drive motor 52 does not increase with respect to the manual operation of the user. As a result, even if the cleaning tank 33 stops halfway, the user can easily move the cleaning tank 33 with a small force.

  Note that the control unit 44 detects a predetermined signal, for example, when the door body 40 is closed, and when the signal for driving the drive motor 52 is received, returns the motor circuit that has been shut off.

  As described above, the dishwasher of the present embodiment is controlled by the control unit.

  Hereinafter, operation | movement and an effect | action of the dishwasher of this Embodiment are demonstrated.

  The user pulls out the cleaning tank 33 in order to accommodate the tableware 36 in the cleaning tank 33. At this time, the user can also manually pull out the washing tank 33 by placing a hand on the handle 43.

  Therefore, in the following, an example in which the user moves the cleaning tank 33 automatically by driving the drive motor 52 by knocking the door body 40 twice, for example, will be described. The reason for setting the knock detection to twice will be described later.

  In this case, when the user knocks the door body 40 twice, the door body 40 is vibrated by being hit. The vibration is transmitted from the decorative plate 42 to the operation panel 41 and is transmitted to the control unit 44 fixed to the operation panel 41. The vibration transmitted to the printed circuit board of the control unit 44 is detected as acceleration by the acceleration sensor 45.

  That is, when the user knocks the door 40 twice, the control unit 44 detects the direction and magnitude of acceleration from the output signal of the acceleration sensor 45. Specifically, the acceleration sensor 45 detects the magnitude of each acceleration in the three-axis directions of the X axis, the Y axis, and the Z axis.

  Then, the control unit 44 determines that, for example, the X-axis acceleration X is equal to or higher than the first threshold A and the Y-axis acceleration Y is equal to or lower than the second threshold B with respect to the detected acceleration magnitude in the three-axis direction. The drive motor 52 is driven only when the Z-axis acceleration Z is equal to or less than the third threshold value C. That is, only when the above conditions are met, the control unit 44 determines that the door body 40 has been knocked from the front with the intention of the user. As a result, malfunctions at the time of opening and closing the cleaning tank 33 that are not based on the intention of the user are prevented.

  Therefore, when the acceleration X is less than the first threshold A, the control unit 44 determines that the vibration is not from the front of the door body 40. Further, even if the acceleration X is equal to or higher than the first threshold A, if the acceleration Y is equal to or higher than the second threshold B or the acceleration Z is equal to or higher than the third threshold C, it is determined that the vibration is not from the front of the door body 40.

  However, the dishwasher of the present embodiment is used by being incorporated in the system kitchen K as described above. The system kitchen K usually has a work top such as a cooking table. Therefore, in preparation for cooking, the operation of hitting the work top is repeated, and a large number of vibrations with various accelerations are generated. Examples of the hitting operation include an operation of cutting the ingredients, an operation of crushing the ingredients with the chopped wood, and an action of hitting with a tool to soften the meat. There are also housework tasks such as placing food and tableware on the worktop. At this time, as described above, even if the threshold value of acceleration is set in the three-axis directions detected by the acceleration sensor, the control unit 44 of the dishwasher is capable of reducing the door body 40 to 2 even with a large number of three or more vibrations. There is a risk of erroneous detection as vibration of acceleration knocked once. Therefore, in the present embodiment, it is preferable that the control unit 44 controls the dishwasher only when two knocks are detected in succession. That is, it is preferable that the control unit 44 cancels the driving operation of the dishwasher when vibration corresponding to three or more consecutive knocks is detected.

  Further, when vibration from the decorative plate 42 is applied, a signal in the X direction is strongly detected. However, when the vibration hits the work top of the system kitchen K, a strong signal in the Z direction appears. Therefore, when the vibration in the Z direction is stronger than the X direction, it is preferable that the control unit 44 determines that the vibration is not from the decorative plate 42 and controls the operation of the dishwasher. Thereby, it is possible to prevent erroneous detection in normal housework, and to more reliably prevent an unintended malfunction of the dishwasher.

  Next, when the control unit 44 determines that the user has performed an operation (vibration) for pulling out the cleaning tank 33 based on the detected acceleration, the controller 44 sounds a buzzer after 0.4 seconds, for example. This notifies the user of the start of movement of the door body 40 and the cleaning tank 33.

  Next, the controller 44 drives the drive motor 52 in a predetermined direction after the determination, for example, 0.6 seconds later. And the drive motor 52 moves the rack gear 54 provided in the lower part of the washing tank 33 ahead via the pinion gear 53 provided in the motor shaft. As a result, while the slide rail 34 of the cleaning tank 33 and the slide rail 31a of the casing 31 slide, the cleaning tank 33 moves forward from the front opening 32 of the casing 31 and is pulled out.

  In the present embodiment, the adjustment is made so that the cleaning tank 33 is pulled out most when the drive motor 52 is driven for about 3.5 seconds. Thereby, the cleaning tank 33 is pulled out to a position where the upper surface opening 35 is substantially fully opened and stopped.

  Next, the user accommodates the tableware 36 in the tableware basket 47 from the upper surface opening 35 with the upper surface opening 35 fully opened.

  Next, the user turns on a power switch (not shown) provided on the front side of the upper surface opening 35. Then, the user operates the operation unit 46 to set the washing operation of the dishwasher. In the case of the present embodiment, the control unit 44 is configured to be energized at all times regardless of whether the power switch is on or off. Thereby, the control part 44 is standing by in the state which can always detect the knock by a user.

Next, when the storage of the tableware 36 and the setting of the cleaning operation are completed via the operation unit 46, the user knocks the door body 40 only once, for example. At this time, if the control unit 44 detects a single knock while the cleaning tank 33 is pulled out, the control unit 44 first notifies the user with sound or the like via, for example, a buzzer. Thereafter, the control unit 44 drives the drive motor 52 to move the cleaning tank 33 backward. Accordingly, the cleaning tank 33 is accommodated in the casing 31, and the door body 40 closes the front opening 32 of the casing 31. At this time, the control unit 44 uses the following detection to detect the cleaning tank 3.
3 is completed. Specifically, for example, the control unit 44 controls the time until storage, detection of the storage position, detection of acceleration when the cleaning tank 33 is stored and stopped, detection of lock current of the drive motor 52, and the like. Make a decision.

  In the above description, the cleaning tank 33 is stored as an example of a configuration in which the drive motor 52 is driven and stored automatically as an example. However, the present invention is not limited to this. For example, the user may store the cleaning tank 33 in the housing 31 while manually pressing the front surface of the door body 40.

  Further, for example, a start switch (not shown) may be provided so that the user can store the cleaning tank 33 by pressing the start switch instead of knocking once after the setting is completed. When a start switch is provided, pressing the start switch may be a signal for completion of operation setting by the user. That is, when the cleaning tank 33 is housed in the housing 31 by the driving device 51 or manually, the cleaning operation may not be started if the start switch is not pressed. As a result, the user can once store the tableware 36 in the cleaning tank 33 and then store the tableware 36 again little by little after a while.

  Next, the control part 44 will perform the set washing | cleaning driving | operation, if accommodation of the washing tank 33 is detected.

  When the predetermined cleaning operation is completed, the user pulls out the cleaning tank 33 in order to take out the tableware 36. Specifically, the door body 40 is knocked twice, for example, in the same manner as when the tableware 36 is stored. At this time, the control unit 44 notifies the user of the start of the withdrawal of the cleaning tank 33 with a buzzer. And the control part 44 drives the drive motor 52, and pulls out the washing tank 33 to a predetermined position.

  Next, after taking out the tableware 36 from the tableware basket 47 in the washing tank 33, the user knocks the door body 40 again, for example, only once. At this time, in the state shown below, the control unit 44 drives the drive motor 52 in the backward direction to store the cleaning tank 33 and does not perform the cleaning operation. Specifically, for example, when a single knock is detected in a state where the cleaning tank 33 is pulled out and there is no operation setting by the operation unit 46 or the start switch is not pressed, the cleaning operation is performed. Absent.

  Thus, a series of dishwashing operations including the user's operations are completed.

  In this embodiment, during the washing operation of the dishwasher, the user or the like may come into contact with the decorative plate 42 or the handle 43 of the door body 40 without intention. In this case, it is inconvenient for the control unit 44 to detect the unintended contact of the user and pull out the cleaning tank 33. Therefore, during operation of the dishwasher, the control unit 44 may be configured not to drive the drive motor 52, for example, with the same two knocks as when stopped. In this case, when the acceleration sensor 45 detects, for example, three or more knocks, it is preferable that the control unit 44 temporarily stops the cleaning operation and pulls out the cleaning tank 33. That is, it is preferable to set so that the cleaning tank 33 is pulled out only when the control unit 44 detects an intentional operation of the user. Thereby, the control part 44 can prevent execution of the control which a user does not intend. Further, the control unit 44 may have a function like a so-called child lock. With these configurations, the safety of the dishwasher is further improved.

In the present embodiment, the controller 44 determines that the X-axis acceleration X is greater than or equal to the first threshold A and the Y-axis acceleration Y is greater than the detected three-axis acceleration magnitude, for example. Although the configuration in which the drive motor 52 is driven only when the threshold value B of 2 or less and the Z-axis acceleration Z is less than or equal to the third threshold value C has been described as an example, the present invention is not limited thereto. The dishwasher according to the present embodiment is particularly incorporated in the system kitchen K, and is basically installed on the upper surface of a cabinet such as a drawer or on the floor surface. Therefore, the transmission state of the applied vibration changes depending on the strength of the installation surface where the dishwasher is installed. Therefore, it is preferable to set the respective threshold values and combinations for the magnitude of the acceleration in the three-axis directions according to the installation state of the dishwasher. Thereby, the dishwasher with high versatility and excellent operability can be realized.

  Specifically, when the dishwasher is installed on the upper surface of the cabinet, for example, only the legs of the dishwasher come into contact with the system kitchen K. That is, a gap is formed between the system kitchen K and the periphery of the dishwasher. At this time, a seal member such as a sponge or a rubber plate is provided on the side surface and upper front portion of the housing 31, and the gap may be blocked. In this case, since the sealing member has flexibility, vibrations in the left-right direction and the front-rear direction are absorbed, and transmission to the dishwasher is suppressed. Therefore, the vibration applied to the system kitchen K is easily propagated in the vertical direction. That is, the direction of vibration that is easily affected by the strength of the installation surface is the vertical direction. Therefore, in consideration of the above state, in the setting of the Z axis corresponding to the vertical direction, for example, instead of the setting “acceleration Z is equal to or less than the third threshold C”, for example, “the acceleration Z of the Z axis is the fourth In some cases, it is preferable to set the threshold value D or higher.

  Moreover, when installing a dishwasher in the upper surface of a cabinet, it is preferable to connect the system kitchen K and the dishwasher with a rigid member. Thereby, the vibration added to the system kitchen K other than the door body 40 of a dishwasher can be detected exactly. For example, if the left and right and up and down directions are firmly connected at the front portion of the housing 31, vibrations in the Y axis in the left and right direction and the Z axis in the up and down direction can be accurately detected. At this time, it is more preferable that the front-rear direction is connected with flexibility. Thereby, the vibration applied to the X-axis corresponding to the front-rear direction is less affected by the vibration of the Y-axis in the left-right direction and the Z-axis in the up-down direction. As a result, the control unit 44 can more accurately distinguish the vibration applied to the door body 40 from other vibrations and control the operation of the dishwasher.

  As described above, the dishwasher according to the present embodiment can assign control such as drawing out and pushing in of the washing tub 33 according to a combination of the state of the washing tub 33 and knocking by the user. In this case, about the knock which the control part 44 detects, you may combine not only frequency | count but intensity | strength detection. This is effective for increasing the types of control controlled by the control unit 44 and realizing various controls.

  In addition, it is preferable that the user can set the combination of the detection of the acceleration sensor 45 and the control operation and the stop position of the cleaning tank 33 through the operation unit 46 or the like. At this time, a configuration in which the setting state and the like can be confirmed on the display unit is more preferable. Specifically, at least setting of a threshold related to settings that can be handled by the user, including sensitivity of the sensor to vibration applied to the door body 40, setting of operation of the drive motor 52, and the like. A configuration in which the set value can be confirmed by the user via a display unit provided in the operation unit 46 is employed. Thereby, the user can freely set the number of knocks, the detection level of the knock intensity, and the like, and can easily check the setting contents. As a result, the usability of the dishwasher is further improved.

  Hereinafter, an example of the configuration of the control executed by the control unit 44 according to the combination of the state of the cleaning tank 33 and the number of knocks will be described in (a) to (e).

(A) When the user knocks the door 40 twice with the cleaning tank 33 accommodated when the cleaning operation is stopped, the control unit 44 controls as follows. In this case, the control unit 44 drives the drive motor 52 to move the cleaning tank 33 in the forward direction. (Operation preparation)
(B) When the user knocks the door body 40 once in the state where the cleaning tank 33 is pulled out and the state where the cleaning operation is not set, the control unit 44 controls as follows. In this case, the controller 44 only drives the drive motor 52 to store the cleaning tank 33 and does not start the cleaning operation. (Operation preparation or operation end)
(C) When the user knocks the door body 40 twice in the state where the cleaning tank 33 is pulled out and the cleaning operation is set, the control unit 44 controls as follows. In this case, the controller 44 only drives the drive motor 52 to store the cleaning tank 33 and does not start the cleaning operation. (Operation preparation)
(D) When the user knocks the door body 40 once in the state where the cleaning tank 33 is pulled out and the state where the cleaning operation is set, the control unit 44 controls as follows. In this case, the control unit 44 drives the drive motor 52 to store the cleaning tank 33 and starts the set cleaning operation. (start operation)
(E) When the user knocks the door body 3 three times while the cleaning tank 33 is accommodated during the cleaning operation, the control unit 44 controls as follows. In this case, the control unit 44 temporarily stops the cleaning operation, drives the drive motor 52, and moves the cleaning tank 33 in the forward direction. (Pause operation)
That is, as shown in (b) and (c), when the cleaning tank 33 is only stored and the cleaning operation is not started, the user interrupts the cleaning preparation while the tableware 36 is being stored. Thereby, the user can leave | separate from a dishwasher. In addition, as shown in (b), when the user determines that the state is the state (d) in which the cleaning operation is started, the user notices that the setting of the cleaning operation has not yet been executed. Can be made.

  In the above-described embodiment, the configuration in which various controls are allocated with different numbers of knocks in the allocation of various controls has been described as an example. However, the present invention is not limited to this. For example, if necessary, a start switch may be used so that all control operations can be handled with the same number of knocks. In this case, the user does not need to remember the number of knocks for each control operation. Therefore, usability such as user operability is improved.

  Moreover, in the said embodiment, when the handle | steering-wheel 43 is provided in the door body 40, you may set the structure which a user does not utilize the drive device 51. FIG. Specifically, the controller 44 may be configured to cancel the drive of the drive motor 52. As a result, it is possible to expand the room for selection such as substituting a child lock or not using a drive device in a narrow space.

  The operation and effect of the dishwasher configured as described above will be described below.

  The dishwasher according to the present embodiment includes at least an acceleration sensor 45 that detects vibration applied to the door body 40. Then, the control unit 44 is configured to drive the drive motor 52 for a set time set within a predetermined time T1, which is the maximum value, to move the cleaning tank 33 in the forward direction and pull it out from the housing 31. doing. Thereby, even when the operation part 46 or the handle | steering-wheel 43 does not exist in the door body 40 of a dishwasher, the washing tank 33 can be automatically pulled out to a predetermined position. Moreover, since the operation part 46 or the handle | steering-wheel 43 does not exist in the door body 40, the design of a dishwasher can be easily adapted to the design of the system kitchen K which is diversified. Furthermore, the set time can be adjusted according to the actual usage of the user. Thereby, the control unit 44 can control the cleaning tank 33 to stop at an arbitrary position.

  Further, the control unit 44 of the dishwasher according to the present embodiment is configured to drive the drive motor 52 when receiving a signal from the acceleration sensor 45 that detects a predetermined vibration applied to the door body 40. ing. Thereby, the control part 44 can detect the vibration which the user knocked the door body 40, and can move the washing tank 33 to arbitrary directions. Specifically, the control unit 44 can appropriately move the cleaning tank 33 forward or rearward by driving the drive motor 52 according to the timing of the cleaning operation and the state of the cleaning tank 33. it can.

  Moreover, the control part 44 of the dishwasher of this Embodiment drives the drive motor 52, and controls to the position which the upper surface opening part 35 of the washing tank 33 becomes fully open automatically so that a movement is possible. Thereby, the user does not need to pull out the washing tank 33 manually. Therefore, the tableware 36 can be easily put in and out without imposing a burden such as excessive labor on the user.

  Moreover, the control part 44 of the dishwasher of this Embodiment controls so that the drive motor 52 may be stopped, when the signal from the acceleration sensor 45 which detected the acceleration which generate | occur | produced when the washing tank 33 stopped is received. Thereby, even when the door body 40 or the cleaning tank 33 collides with an obstacle and stops, the occurrence of a problem with the obstacle is prevented. At this time, as will be described later with reference to FIG. 10, a locking portion may be provided at a predetermined position of the drawer. Thereby, the control part 44 can stop the washing tank 33 reliably in a predetermined position.

  Moreover, the control part 44 of the dishwasher of this Embodiment controls so that the drive motor 52 and a motor circuit may be interrupted | blocked, when the washing tank 33 has stopped. Thereby, the user can move the washing tank 33 manually. At this time, due to the movement of the cleaning tank 33, the drive motor 52 runs idle, and a back electromotive force is generated. However, the drive motor 52 and the motor circuit are disconnected. Therefore, an abnormal current does not flow through the printed circuit board of the control unit 44 due to the generated back electromotive force. Further, when the user manually performs the opening / closing operation, an electrical load due to the counter electromotive force of the drive motor 52 does not occur, so that no extra load is applied to the user during the opening / closing operation. Therefore, the user can easily perform the operation of putting in and out the cleaning tank 33 with little effort even manually.

  The dishwasher driving device 51 of the present embodiment includes a driving motor 52, a pinion gear 53 driven by the driving motor 52, and a rack gear 54 that meshes with the pinion gear 53. The drive motor 52 is fixed inside the housing 31 so that the pinion gear 53 is positioned in the vicinity of the front opening 32. The rack gear 54 is fixed to the outside of the cleaning tank 33. At this time, when the washing tank 33 moves in the forward direction, the state is lowered. In this case, the vicinity of the pinion gear 53 provided at the front portion is a fulcrum. Therefore, the possibility that the rack gear 54 and the pinion gear 53 are disengaged is low. However, in order to reliably prevent the disengagement, when a new configuration is separately provided, it can be realized with a mechanism having a simple configuration.

  As disclosed above, the control unit 44 of the dishwasher according to the present embodiment controls the driving device 51 to move the washing tank 33 safely in accordance with the intention of the user. Therefore, the labor for manually moving the cleaning tank 33 to the user is reduced, and usability is improved. Further, the operation unit 46 is entirely hidden in the housing 31. Thereby, it is possible to easily adapt the design of the dishwasher to the diversified design of the system kitchen K. As a result, the design of the system kitchen K is unified, and the design is further improved.

  In addition, when the controller 44 comes into contact with an obstacle existing in front of the cleaning tank 33, the controller 44 detects a change in vibration or acceleration generated by the contact. Then, the control unit 44 immediately stops driving the drive motor 52. Thereby, generation | occurrence | production of a big malfunction in an obstruction and a dishwasher can be prevented beforehand. As a result, the dishwasher can maintain high safety.

(Embodiment 2)
Hereinafter, the dishwasher according to the second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

FIGS. 3 and 4 are side longitudinal sectional views of a dishwasher in which the washing tub in the second embodiment of the present invention is a drawer type. FIG. 3 shows a state where the cleaning tank is housed in the housing. FIG. 4 shows a state where the upper surface opening of the cleaning tank is pulled out from the inside of the housing.

  The dishwasher of the present embodiment is different from the driving device of the first embodiment in the configuration of the driving device. Since the configuration other than this is the same as that of the first embodiment, the first embodiment is used and the description thereof is omitted.

  That is, as shown in FIG. 3 and FIG. 4, the driving device 55 of the present embodiment is configured by a roller pressure contact type, and allows the cleaning tank 33 to be taken in and out.

  The drive device 55 includes a drive motor 56, a roller 57 driven by the drive motor 56, a pressure contact rail 58 to which the roller 57 is pressed, and the like. The press-contact rail 58 is fixed to one lower portion outside the right and left side surfaces of the cleaning tank 33. The pressure-contact rail 58 has a length that is at least longer than the stroke from which the cleaning tank 33 is drawn. The roller 57 is attached to a motor shaft that is driven by a drive motor 56 and is in pressure contact with the pressure contact rail 58. The drive motor 56 includes a speed reduction mechanism (not shown). In the drive motor 56, the roller 57 is fixed inside the housing 31 at a position near the front opening 32.

  Note that the roller 57 shown in FIG. 3 is shown in a configuration in which the roller 57 is pressed against the pressure-contact rail 58 from below, but is not limited thereto. For example, the roller 57 may be configured to be in pressure contact with the pressure contact rail 58 from above or in pressure contact from the lateral direction. Further, as described above, the press contact rail 58 is not provided separately, but may be configured such that the side surface or the bottom surface of the cleaning tank 33 is used as the press contact rail 58.

  The rotational movement of the drive motor 56 is converted into a linear movement by the configuration of the roller 57 and the pressure contact rail 58. Thereby, the washing tank 33 is linearly moved to a position where the upper surface opening 35 is substantially fully opened.

  At this time, similarly to the first embodiment, if the drive motor 56 is configured to be driven at a set time, the cleaning tank 33 can be stopped at an arbitrary pull-out position according to the set time.

  Further, in the case of the configuration of the combination of the roller 57 and the pressure contact rail 58, as in the rack and pinion type of the first embodiment, it can be assembled without considering the meshing of the gears.

  Further, the cleaning tank 33 can be automatically pulled out by the driving device 55. Therefore, for example, when the cleaning tank 33 is pulled out, the user does not need to apply excessive labor to the cleaning tank 33.

  That is, the dishwasher according to the present embodiment can automatically pull out the washing tub 33 by the drive device 55 to a position where the tableware 36 can be easily accommodated. This improves the usability of the dishwasher. Moreover, the dishwasher of this Embodiment can be easily adapted to the design of the diversified system kitchen K.

(Embodiment 3)
Hereinafter, the dishwasher of Embodiment 3 of this invention is demonstrated, referring FIG.

  FIG. 5 is a diagram showing a side longitudinal sectional view of the dishwasher according to Embodiment 3 of the present invention.

The dishwasher according to the present embodiment is different from the first embodiment in that a second operation unit is provided on the door body. Since the configuration other than this is the same as that of the first embodiment, the first embodiment is used and the description thereof is omitted.

  That is, as shown in FIG. 5, the door body 40 according to the present embodiment includes the second operation portion 46 b on the top of the decorative plate 42. The second operation unit 46b is provided with at least an operation switch (not shown) of a drive motor 52 that is a drive unit for moving the cleaning tank 33, a sensor, or the like. The operation switch is composed of, for example, a plurality of button switches so that it can be distinguished in which direction of the cleaning tank 33 is moved in the front-rear direction.

  In addition, the sensor includes, for example, a non-contact sensor exemplified by an ultrasonic sensor, an infrared sensor, an optical sensor, or a sound (voice) recognition sensor. Specifically, an ultrasonic sensor, an infrared sensor, or an optical sensor includes, for example, a transmission unit and a reception unit, and outputs a detection signal to the control unit 44 when a hand is held within a predetermined distance range. . On the other hand, the sound (speech) recognition sensor recognizes a sound such as applause, a sound of hitting an object, or a sound, and outputs the detected content to the control unit 44. Accordingly, the control unit 44 determines the operation content based on the output detection signal and detection content, drives the drive motor 52, and moves the cleaning tank 33. The infrared sensor may be configured to detect infrared rays emitted from the human body.

  In this case, similarly to the control by the acceleration sensor 45 described in the first embodiment, the control method (such as the operation direction) of the cleaning tank 33 is determined based on the number of hands held within a predetermined time and the number of sounds. It is preferable to determine. In the case of the voice recognition sensor, the control method of the cleaning tank 33 is determined based on the instruction content by voice.

  When the cleaning tank 33 is moved forward, the control unit 44 of the present embodiment controls the drive motor 52 so that the upper surface opening 35 is substantially fully opened. In addition, substantially full open is the same as the meaning demonstrated in Embodiment 1.

  Moreover, the control part 44 controls the drive motor 52 with time similarly to Embodiment 1. FIG. That is, the control unit 44 drives and stops the drive motor 52 for the set predetermined time T1.

  With this configuration, the user automatically performs the drawing operation or the storing operation of the cleaning tank 33. Therefore, the user's labor is not required when the cleaning tank is pulled out and stored.

  That is, the dishwasher according to the present embodiment can automatically pull out the washing tub 33 by the drive device 55 to a position where the tableware 36 can be easily accommodated. This improves the usability of the dishwasher.

  Moreover, the dishwasher of this Embodiment can be easily adapted to the design of the diversified system kitchen K.

(Embodiment 4)
Hereinafter, a dishwasher according to Embodiment 4 of the present invention will be described with reference to FIGS.

  FIG. 6 is a perspective view of another drawer-type dishwasher according to Embodiment 4 of the present invention. FIG. 7 is a front longitudinal sectional view of the dishwasher. FIG. 8 is an enlarged view of a main part of the slide rail portion of FIG.

The dishwasher of the present embodiment is different from that of the first embodiment in the configuration of the washing tub of the dishwasher and the configuration of the door support mechanism. That is, the cleaning tank of the first embodiment is configured to be withdrawn / withdrawn from the casing. On the other hand, the cleaning tank of the present embodiment is constituted by a cleaning space surrounded by the inside of the housing and the inner surface of the door body. Therefore, the cleaning space of the cleaning tank is configured to be fixed in the housing. Due to this difference, in the first embodiment, the support mechanism that supports the door body includes a cleaning tank to which the door body is attached and a slide rail that moves the cleaning tank. On the other hand, the support mechanism of this Embodiment is comprised including the support member and slide rail to which a door body is attached. Since the configuration other than this is the same as that of the first embodiment, the first embodiment is used and the description thereof is omitted.

  As shown in FIGS. 6 and 7, the dishwasher of the present embodiment includes a casing 71, a cleaning tank 73, a door body 74, a cleaning space 75, a driving device 83, and the like.

  The housing 71 has a front opening 72 having an entire front surface opened. The cleaning tank 73 is formed inside the casing 71 provided with the front opening 72. The door body 74 is disposed so as to cover the front opening 72. The cleaning space 75 is formed by the cleaning tank 73 and the door body 74. In the cleaning space 75, a lower tableware basket 77 on which the tableware 76 is placed and an upper tableware basket 78 are arranged so as to be movable back and forth. When the lower table basket 77 and the upper table basket 78 are locked to the door body 74, the lower table basket 77 and the upper table basket 78 move back and forth together with the door body 74. On the other hand, when the lock is released, the lower table basket 77 and the upper table basket 78 move individually with respect to the door body 74. That is, the lower tableware basket 77 and the upper tableware basket 78 have a form that moves integrally with the door body 74 and a form that moves individually.

  The door body 74 has an operation portion 79 on the upper surface 74a. The operation unit 79 can be switched between power on / off, start, pause, cleaning, and drying course by a user's button operation. At this time, the operation unit 79 may be provided with a switch for operating a control unit (not shown) in order to move the door body 74. The control unit is provided below the operation unit 79.

  Further, the door body 74 is supported by the casing 71 through the support mechanism 80 so as to be movable back and forth. As described above, the support mechanism 80 includes the support member 81, the slide rail 82, and the like. The slide rails 82 are attached to the inner side surfaces on both the left and right sides of the casing 71 at the lower part outside the cleaning tank 73.

  As shown in FIG. 8, the slide rail 82 includes a fixed rail 82a, a first movable rail 82b, a second movable rail 82c, and the like. The first movable rail 82b is slidably attached to the fixed rail 82a. The second movable rail 82c is slidably attached to the first movable rail 82b.

  The support member 81 is formed of, for example, a metal plate such as stainless steel, and the front end portion 81 a is fixed to the inner lower portion of the door body 74. The support member 81 is fixed on the second movable rail 82 c of the slide rail 82.

  The support member 81 and the second movable rail 82c are integrated with the first movable rail 82b while supporting the door 74 substantially vertically (including vertical) when the door 74 moves forward. Move to. As a result, the slide rail 82 extends.

  The drive device 83 has at least a drive motor 84 that constitutes a drive unit, and is disposed in a lower portion of the cleaning tank 73 in the housing 71. The driving device 83 moves the door body 74 at least in the forward direction or the backward direction.

The control unit receives a predetermined signal from a sensor exemplified by the acceleration sensor 45 or the like, or an operation switch. Accordingly, the control unit drives the drive motor 84 that is a drive unit based on the received signal.

  As described above, the dishwasher of the present embodiment is configured.

  Hereinafter, the drive device 83 of the present embodiment will be described.

  The drive device 83 is configured by a rack and pinion type mechanism as in the first embodiment.

  The drive device 83 includes a drive motor 84, a pinion gear 85 driven by the drive motor 84, a rack gear 86 that meshes with the pinion gear 85, and the like.

  The rack gear 54 is formed by arranging gear teeth in a straight line. The rack gear 86 is fixed near the support member 81. The rack gear 86 has at least a length equal to or longer than the stroke in which the door body 74 moves. The pinion gear 85 is attached to a motor shaft that is driven by the drive motor 84. The drive motor 84 includes a speed reduction mechanism (not shown). The drive motor 84 is fixed inside the casing 71 at a position where the pinion gear 85 is in the vicinity of the front opening 72.

  With the configuration of the rack gear 86 and the pinion gear 85, the rotational motion of the drive motor 84 is converted into a linear motion. Thereby, the door body 74 is moved in the forward direction or the backward direction. Since other detailed control is the same as that of Embodiment 1, description is abbreviate | omitted.

  According to the present embodiment, since the cleaning tank is configured as a separate body and the accessory device does not move, the moving unit includes a door, a tableware basket, a cleaning nozzle, and the like. Therefore, a moving part can be comprised lightweight. Thereby, the drive device can also be configured in a relatively small size.

(Other embodiments)
The configuration of the four embodiments has been disclosed above.

  Hereinafter, other embodiments of various configurations including the driving device will be described.

  First, an example of another embodiment of a method of stopping at a predetermined position when the cleaning tank 33 is pulled out will be described with reference to FIGS. 9 and 10.

  That is, in Embodiment 1, although the method of controlling the drive motor 52 with time was disclosed as an example, the present invention is not limited to this. For example, the following 1. To 3. The cleaning motor 33 may be stopped by controlling the drive motor by the method described in FIG.

  1. As shown in FIG. 9, a position detection unit 59 made of, for example, a micro switch is provided near the front opening 32 of the housing 31. The position detector 59 detects a predetermined position of the cleaning tank 33 and outputs the detected signal to the controller 44. The controller 44 may be configured to control the drive motor to stop driving based on a signal detected by the position detector 59 while the cleaning tank 33 is moving. The position detector 59 may be a photoelectric switch. The photoelectric sensor detects the position of the cleaning tank 33 by measuring the moving distance of the cleaning tank 33. Moreover, you may comprise a drive part with a stepping motor. In this case, the moving distance of the cleaning tank 33 can be detected based on the number of pulses for driving the stepping motor.

2. As shown in FIG. 10, for example, a locking portion 60 including a first protrusion 60a and a second protrusion 60b is provided. And you may comprise so that the washing tank 33 may be stopped by the latching | locking part 60 in a predetermined position. The first protrusion 60 a of the locking part 60 is provided in the vicinity of the front opening 32 of the housing 31, for example. The second protrusion 60 b is provided at the rear portion of the slide rail 34 or the cleaning tank 33. The 1st projection part 60a and the 2nd projection part 60b are arrange | positioned so that the washing tank 33 may contact | abut in the predetermined position pulled out. Thereby, the washing tank 33 stops at a predetermined position. At this time, the control unit 44 detects the lock current of the drive motors 52 and 56 generated when the cleaning tank 33 is stopped by the locking unit 60. Thereby, you may comprise the control part 44 so that the drive of the drive motors 52 and 56 may be stopped.

  3. As shown in FIG. 10, for example, a locking portion 60 including a first protrusion 60a and a second protrusion 60b is provided. And you may comprise so that the washing tank 33 may be stopped by the latching | locking part 60 in a predetermined position. The first protrusion 60 a of the locking part 60 is provided in the vicinity of the front opening 32 of the housing 31, for example. The second protrusion 60 b is provided at the rear portion of the slide rail 34 or the cleaning tank 33. The first protrusion 60a and the second protrusion 60b are configured to contact each other at a predetermined position where the cleaning tank 33 is pulled out. Thereby, the washing tank 33 stops at a predetermined position. At this time, the acceleration sensor 45 detects the acceleration generated when the cleaning tank 33 is stopped by the locking portion 60, and outputs the detected signal to the control portion 44. Accordingly, the control unit 44 may be configured to stop the drive motors 52 and 56 based on the signal from the acceleration sensor 45.

  Above 1. To 3. According to the configuration described in (4), it is not necessary to determine the relationship between the set time shown in the first embodiment and the drawing amount of the cleaning tank 33, and the stop position can be physically set.

  That is, 1. Position detector 59 or 2. And 3. If the 1st projection part 60a is slid back and forth, and it is set as the structure which can be fixed to arbitrary positions, the washing tank 33 can be reliably stopped at arbitrary positions.

  In addition, 2. In the case of this configuration, the drive of the drive motors 52 and 56 is stopped based on the detection of the lock current of the drive motors 52 and 56 generated by the stop of the cleaning tank 33. Therefore, there is a possibility that an excessive load due to the lock current is applied to the drive motors 52 and 56. However, since the current is interrupted immediately if the predetermined current value is exceeded, the time during which the lock current flows through the drive motors 52 and 56 is short. Therefore, an excessive load is not applied to the drive motors 52 and 56, and the drive motors 52 and 56 can be stopped.

  In addition, 2. And 3. In the case of this configuration, the locking portion 60 is preferably formed of a material having cushioning properties. Thereby, the shock at the time of contact | abutting with the 1st projection part 60a and the 2nd projection part 60b which comprises the latching | locking part 60 is absorbed. Therefore, the washing tank 33 stops smoothly, and the transmission of shock to the accommodated tableware 36 is alleviated. As a result, noise due to contact between the dishes 36 and damage to the dishes 36 are prevented. Further, it is possible to prevent the water accumulated in the cleaning tank 33 from splashing due to the contact. Therefore, it is possible to prevent water from jumping out of the cleaning tank 33 and water of the dried tableware 36 after cleaning.

  In the first and second embodiments, the drive motors 52 and 56 of the drive devices 51 and 55 are fixed near the front opening 32 of the casing 31, and the rack gear 54 and the pressure contact rail 58 are fixed outside the cleaning tank 33. Although the configuration has been described as an example, it is not limited thereto. For example, the drive motors 52 and 56 of the drive devices 51 and 55 may be fixed to the rear part of the cleaning tank 33, and the rack gear 54 and the pressure contact rail 58 may be fixed inside the housing 31.

  In general, when a drive device is provided in furniture or a refrigerator drawer, it is preferable in terms of configuration to provide a power source for the drive unit on the housing side.

However, the dishwasher with the drawer having the washing tub 33 of the present embodiment requires a power source such as the heater 49 and the washing pump 50 arranged in the washing tub 33, and therefore a power line is provided on the washing tub 33 side. ing. Therefore, according to the above configuration, the signal line and the power line from the control unit 44 to the drive motors 52 and 56 can be arranged only on the side surface of the cleaning tank 33 without being routed to the housing 31 side. This facilitates the design and assembly of the dishwasher and improves workability during maintenance.

  In the first embodiment, the configuration in which the teeth are provided below the rack gear 54 of the drive device 51 has been described as an example. However, the present invention is not limited to this. For example, teeth may be formed on both the upper and lower sides of the rack gear 54 of the driving device 51, and the rack gear 54 may be sandwiched between the two pinion gears 53 in the vertical direction. Further, the rack gear 54 may be formed in any one of the vertical directions, and a roller may be provided on the side where the teeth are not provided so that the rack gear 54 is sandwiched from the vertical direction. As a result, the rack gear 54 and the pinion gear 53 can be reliably engaged with each other, and a configuration that cannot be easily removed can be realized.

  Further, in each of the first, second, and fourth embodiments, the case where the user manually moves the cleaning tank 33 when the cleaning tank 33 stops halfway due to contact with an obstacle has been described. It is not limited to this. For example, it is good also as a structure which drives the drive devices 51 and 55 and moves the washing tank 33 automatically. In this case, it is necessary to distinguish whether the cleaning tank 33 is pulled out or stored from the stop position. Therefore, as a method of distinguishing the moving direction, the number of times the user strikes the decorative plate 42 may be detected by the acceleration sensor 45 to distinguish the moving direction. In addition, a switch that clearly indicates the moving direction may be provided in the operation unit 46, and the moving direction of the cleaning tank 33 may be distinguished by a user operation. According to this configuration, the driving devices 51 and 55 can be used effectively. Thereby, the effort which a user moves the washing tank 33 manually is reduced.

  Next, another embodiment of the method for controlling the drive devices 51 and 55 will be described.

  In each of the above embodiments, when the control unit 44 detects a signal for driving the drive motors 52 and 56 by the user, the drive unit 52 and 56 is immediately driven. However, the present invention is not limited to this. For example, the control unit 44 starts driving the drive motors 52 and 56 after a predetermined time T2 (for example, 0.4 second to 1 second) after detecting a signal for driving the drive motors 52 and 56 by the user. You may control to do. According to this control, when the cleaning water is jetted from the cleaning nozzle in the cleaning step, the drive motors 52 and 56 can be driven after the cleaning pump is stopped. Thereby, it is possible to prevent the cleaning water sprayed from the cleaning nozzle from jumping out from the cleaning tank. In addition, when the control unit 44 continuously detects driving signals and repeats driving of the driving motors 52 and 56, a predetermined time T2 is provided to secure time for temporarily stopping the driving motors 52 and 56. it can. Thereby, it can control so that the big starting current which flows into the drive motors 52 and 56 does not flow continuously. As a result, it is possible to prevent an excessive temperature rise of the drive motors 52 and 56 due to a large starting current that flows continuously.

  At this time, it is more preferable to provide a notification unit that notifies the movement of the door body 40 by driving the drive motors 52 and 56 because safety is improved. In this case, it is preferable that the notification is started before the door 40 starts moving during the predetermined time T2. Thereby, contact | abutting with obstructions, such as a person by the movement of the door body 40, can be prevented beforehand. As a result, the safety of the dishwasher is further improved.

Moreover, in each said embodiment, you may provide further the door closing detection sensor which detects the obstruction | occlusion of the door body 40. FIG. In this case, for example, a position detection unit 59 shown in FIG. 9 can be used as a door closing detection sensor. At this time, the control unit 44 does not detect a signal from the acceleration sensor 45 for a predetermined time T3 (for example, 0.5 seconds) after detecting the closing signal of the door body 40 by the door closing detection sensor. Control. Alternatively, it is preferable that the control unit 44 performs control so that the drive motor is suspended even when a signal from the acceleration sensor 45 is detected.

  Normally, when the door body 40 is closed, the entire housing 31 including the tableware 36 vibrates due to a shock caused by the contact between the door body 40 and the housing 31. Therefore, the acceleration sensor 45 may erroneously detect the vibration as an operation signal by knocking.

  However, by providing the predetermined time T3 so as not to detect the vibration, it is possible to prevent erroneous detection of vibration at the time of closing. In addition, by providing the predetermined time T3, it is possible to secure a time during which the drive motors 52 and 56 are temporarily stopped. As a result, an excessive temperature rise of the drive motors 52 and 56 can be prevented.

  At this time, you may provide the alerting | reporting part alert | reported when the obstruction | occlusion signal of the door body 40 is detected by the door close detection sensor. Thereby, the user can be reliably notified of the blockage of the door body 40. Moreover, it can alert | report after progress of the predetermined time T3 which detected the obstruction | occlusion signal, and can alert | report that a user can accept the knock for pulling out the door body 40. FIG. According to this configuration, the user can easily confirm the reliable blockage of the door body 40 and the normal execution of the subsequent cleaning operation.

  Moreover, in each said embodiment, you may control the control part 44 to alert | report generation | occurrence | production of the abnormal condition shown below. Note that the abnormal state means that, for example, the drive motors 52 and 56 are driven in the rearward direction of closing the door body 40, and the stop of the drive motors 52 and 56 is detected by the door closing detection sensor even though the control unit 44 detects the stop. Is not detected by the control unit 44. Thereby, it is possible to prompt the user to recognize that the door body 40 is not completely closed and to quickly perform the subsequent response.

  In addition, when the notification is repeated a predetermined number of times (for example, five times) even if the user operates the door body 40 to close by the notification of the abnormal state, the drive motor further increases with the notification of the occurrence of the abnormality. You may control to stop the drive of 52,56. According to this configuration, control can be performed so that the lock current of the drive motors 52 and 56 does not flow repeatedly. As a result, an excessive temperature rise of the drive motors 52 and 56 can be prevented.

  Furthermore, it is possible to notify the user that it is necessary to determine the cause of the abnormality by notifying the abnormal state. The cause of the abnormality is, for example, whether the door body 40 is not closed by an obstacle, or whether the drive motors 52, 56 or the door close detection sensor has failed. As a result, the user can determine the cause of the occurrence of the abnormality and respond immediately. As a result, it is possible to more reliably prevent the cleaning operation from being performed in a state where the door body 40 is not closed.

  Moreover, in each said embodiment, you may control so that the control part 44 may alert | report the abnormality generation shown below. Note that the occurrence of an abnormality first detects, for example, a signal indicating that the door body 40 is closed by a door close detection sensor. Then, in the detected state, the drive motors 52 and 56 are driven in the forward direction in which the door body 40 is opened. For example, the control unit 44 may continue to detect the signal of the door close detection sensor for a predetermined time T4 (for example, 2.5 seconds) after driving. According to this configuration, the control unit 44 determines that the door body 40 is not moving, and can promptly notify the user of the abnormality of the door body 40.

Further, in each of the above embodiments, the control unit 44 may perform control so as to stop further driving motors 52 and 56 when the following notification of occurrence of abnormality is repeated. Specifically, even if the user knocks, even if the door body 40 is not opened and the user is notified, the notification is repeated further and the predetermined number of times (for example, 5 times) is reached. is there. According to this control, the lock current of the drive motors 52 and 56 can be prevented from flowing repeatedly. Thereby, the excessive temperature rise of the drive motors 52 and 56 can be prevented.

  Further, the above notification can inform the user that it is necessary to determine the cause of the abnormality. The cause of the abnormality is, for example, whether the door body 40 does not move due to an obstacle or the like, or whether the drive motors 52, 56 or the door closing detection sensor has failed.

  Next, another embodiment in which the acceleration sensor 45 is applied to control will be described.

  In each said embodiment, although the structure which controls operation | movement of the washing tank 33 of a dishwasher based on the signal detected by the acceleration sensor 45 was demonstrated to the example, it is not restricted to this. The acceleration sensor 45 may be applied as, for example, a level used for detection of inclination when a dishwasher is installed.

  Since the dishwasher uses water, there is a risk of problems such as water leakage if it is installed at an angle. Therefore, it is necessary to check the horizontal state of the dishwasher at the time of installation.

  Therefore, the control unit 44 uses the acceleration sensor 45 as a level to detect a deviation between gravity and acceleration in the Z-axis direction. Thereby, in order to detect the inclination of the dishwasher, it is not necessary to separately provide a level. As a result, workability when installing the dishwasher is improved.

  Further, when the installation surface of the place where the dishwasher is installed is inclined due to secular change, the control unit 44 detects the inclination by the acceleration sensor 45. And the control part 44 alert | reports generation | occurrence | production of the inclination of the installation surface of a dishwasher to a user. Furthermore, the control unit 44 controls to stop the operation of the dishwasher. Thereby, the user can use a dishwasher for a long period of time, without producing a malfunction, adjusting the inclination of an installation surface.

  In addition, the control unit 44 may control the drive motors 52 and 56 so as to change the moving speed of the door body 40 by determining the inclination state of the installation surface detected by the acceleration sensor 45. Specifically, when the installation surface is tilted forward or backward less than a predetermined value (for example, 0.5 degrees or more and less than 2 degrees), the moving speed of the door body 40 is controlled to be slightly slower than usual. To do.

  On the other hand, when the inclination of the installation surface is large (for example, 1 degree or more and less than 2 degrees), there is a possibility that water leaks or a load more than expected is applied to the drive device 51. In this case, the control unit 44 can notify the user via, for example, a notification unit, and prompt a response such as repair of the installation surface. Thereby, generation | occurrence | production of a malfunction can be prevented beforehand. That is, when the dishwasher is installed on an installation surface that is inclined to the extent that does not hinder the washing operation, the control unit 44 controls the drive motors 52 and 56 so that the moving speed of the door body 40 becomes slow. Thereby, the safety of the dishwasher can be further improved.

  Further, in each of the embodiments described above, the control unit 44 performs control so that the drive motors 52 and 56 cannot be driven when the inclination of the installation surface detected by the acceleration sensor 45 is a predetermined value or more (for example, 2 degrees or more). May be. By this control, the operation of the dishwasher can be regulated before the occurrence of a problem that water leakage or a load more than expected is applied to the drive device. This improves the safety of the dishwasher.

Further, in each of the above embodiments, the acceleration sensor 45 may be configured to detect vibration generated when the cleaning water collides with the inner wall of the cleaning tank 33 during the cleaning operation. According to this configuration, the control unit 44 determines from the direction and magnitude of acceleration due to vibration detected by the acceleration sensor 45.
The situation in the cleaning tank 33 described below can be easily determined. Specifically, it can be determined whether or not the cleaning pump 50 is operating normally and whether or not the cleaning nozzle 48 is rotating normally. Further, it is possible to determine whether or not the cleaning water is sprayed from any of the plurality of cleaning nozzles 48 and how much the tableware 36 is accommodated. Accordingly, it is possible to improve the cleaning efficiency by finding the malfunction of the operation at an early stage or applying it to the cleaning nozzle injection method.

  In each of the above embodiments, in the situation described below, the control unit 44 may determine that the drive motors 52 and 56, the acceleration sensor 45, or the like is out of order and notify the abnormality. Specifically, when a signal for driving the drive motors 52 and 56 is output, the control unit 44 notifies the abnormality in a case where a predetermined output from the acceleration sensor 45 is not input. As a result, it is possible to easily notify the user of an abnormality in the drive system and prompt a response.

  Moreover, in each said embodiment, when the abnormality of the acceleration sensor 45, such as an erroneous output, is detected, for example, the control unit 44 may perform control so that the cleaning tank 33 is pulled out. According to this control, it is possible to avoid the problem that the acceleration sensor 45 cannot detect the knock by the user and the cleaning tank 33 is not pulled out. Furthermore, the control unit 44 can notify the user of an abnormality of the acceleration sensor 45 via a notification unit or the like.

  As described above, the notification unit is provided, for example, in the operation unit 46, and notifies the user or the like of the start of operation of the drive device 51, the occurrence of an abnormality, and the like. The notification unit is configured to aurally notify with a synthesized sound such as voice or buzzer. Thereby, it is possible to easily notify the user in the vicinity of the dishwasher of the operation state of the dishwasher.

  Specifically, when the notification unit is notified via sound, it is preferable that the control unit 44 starts the notification after the elapse of a predetermined time T5 after the acceleration sensor 45 detects vibration due to knocking or the like.

  In this case, the predetermined time T5 is desirably 0.1 seconds to 0.6 seconds. Usually, when the user knocks the door body 40, the user concentrates on the knocking operation. At this time, if the notification unit generates a sound similar to knocking or the like, when the predetermined time T5 is less than 0.1 seconds, the sound due to the knocking and the sound of the first part of the notification sound are heard overlapping. Therefore, since it is difficult for the user to hear the sound of the notification unit, the determination is difficult. On the other hand, when the predetermined time T5 exceeds 0.6 seconds, the user listens to the sound of the notification unit with the extended impression, so that it may be difficult to make an accurate determination. Therefore, it is preferable to start generation of a notification sound by the notification unit after a predetermined time T5 has elapsed since vibration due to knocking or the like is detected. Thus, the user can accurately hear and determine the notification sound without being disturbed by the sound knocked by himself.

  Further, the notification unit may be configured to notify the user of an error code display or the like by a combination of blinking of a lamp such as an LED or lighting of a plurality of lamps.

  Further, not only the acceleration sensor 45, but also when the abnormality occurs, the cleaning tank 33 may be automatically pulled out. The occurrence of abnormality is assumed to be, for example, water leakage, water level abnormality, or a large amount of detergent bubbles. Therefore, it is detected by a detection method corresponding to each abnormal state, and the cleaning tank 33 is automatically pulled out. Thereby, it is possible to visually notice the occurrence of abnormality in the user. For example, when the operation unit 46 is concealed in the casing 31 as in the dishwashers of the first and second embodiments, the configuration in which the washing tank 33 is automatically pulled out is particularly preferable. Thereby, the user can easily check the error code or LED display displayed on the pulled out operation unit 46. In this case, the drawing amount of the cleaning tank 33 is not particularly limited as long as the operation unit 46 can be visually recognized.

  In each of the above embodiments, for example, a remote controller (not shown) that transmits an operation signal to the dishwasher may be separately provided. In this case, the control unit 44 receives various operation signals transmitted from the remote controller. And based on the received operation signal, the control part 44 controls each part.

  For example, when the cleaning tank 33 is pulled out and stored, the control unit 44 detects a predetermined signal transmitted from the remote controller. And the control part 44 drives the drive motors 52 and 56 based on the received predetermined signal, and moves the washing tank 33. FIG. According to this configuration, the user can freely operate the dishwasher from a position away from the dishwasher according to the time to be washed. This further improves the convenience of the dishwasher.

  In addition, each embodiment disclosed above may combine the structure of each embodiment which can be combined, without being specifically limited. Thereby, the same effect is acquired.

  In the dishwasher of the present invention, even if a decorative board without an operation unit or a handle is attached in order to improve the design, the washing tank can be easily pulled out and stored, and the washing operation can be performed. Therefore, it is useful as a dishwasher that is built-in and used in the system kitchen and that requires design uniformity.

DESCRIPTION OF SYMBOLS 31 Case 31a Slide rail 32 Front opening part 33 Washing tank 34 Slide rail 35 Upper surface opening part 36 Tableware 37 Inner lid 38 Parallel link mechanism 39 Seal part 40 Door body 41 Operation panel 42 Dressing plate 43 Handle 44 Control part 45 Acceleration sensor ( Sensor)
46 operation part 46b second operation part 47 tableware basket 48 washing nozzle 49 heater 50 washing pump 51 drive unit 52 drive motor 53 pinion gear 54 rack gear 55 drive unit 56 drive motor 57 roller 58 pressure contact rail 59 position detection part 60 locking part 60a 1st protrusion 60b 2nd protrusion 71 Case 72 Front opening 73 Washing tank 74 Door body 74a Upper surface 75 Washing space 76 Tableware 77 Lower tableware basket 78 Upper tableware basket 79 Operation unit 80 Support mechanism 81 Support member 81a Front end portion 82 Slide rail 82a Fixed rail 82b, 82c Movable rail 83 Drive device 84 Drive motor 85 Pinion gear 86 Rack gear

Claims (16)

A housing having a front opening on the front surface;
A tableware basket that is provided so as to be able to be taken in and out of the housing and accommodates tableware,
A moving part including a door covering the front opening;
A support mechanism that supports the housing in a state in which the moving unit is movable back and forth;
A drive unit having a drive unit for moving the moving unit at least in the forward or backward direction;
A control unit for controlling the driving of the driving unit,
A dishwasher provided with a locking portion so that the moving portion stops at a predetermined position. The dishwasher according to claim 1, wherein the control unit is configured to stop driving of the driving unit when detecting the stop of the moving unit that is moving. The dishwasher according to claim 2, wherein the control unit is configured to monitor a current of the driving unit and detect that the moving unit is stopped by a change in the current. Equipped with a sensor to detect acceleration,
The dishwasher according to claim 2, wherein the control unit is configured to monitor the acceleration of the moving unit by the sensor and detect the stop of the moving unit according to the magnitude or change of the acceleration. 5. The control unit according to claim 1, wherein the control unit is configured to stop the driving unit when the contact of the obstacle or the generation of a load is detected while the moving unit is moving. 6. The dishwasher described. The said control part monitors the electric current of the said drive part, and it is comprised so that the generation | occurrence | production of a contact with an obstruction or a load may be detected while the said moving part is moving by the change of the said electric current. Dishwasher. The sensor is configured to detect vibration with acceleration;
The control unit is configured to monitor an acceleration of the moving unit by the sensor and detect contact with an obstacle or generation of a load while the moving unit is moving based on a change in the acceleration. 4. The dishwasher according to 4. The drive device includes the drive unit, a pinion gear driven by the drive unit, and a rack gear that meshes with the pinion gear,
The drive unit is fixed to the inside of the housing so that the pinion gear is positioned near the front opening,
The dishwasher according to claim 1, wherein the rack gear is configured to be fixed to the support mechanism. The drive device includes the drive unit, a pinion gear driven by the drive unit, and a rack gear that meshes with the pinion gear,
The drive unit is fixed to the rear part of the support mechanism,
The dishwasher according to any one of claims 1 to 7, wherein the rack gear is configured to be fixed inside the casing. The driving device includes the driving unit and a roller driven by the driving unit,
The dishwasher according to any one of claims 1 to 7, wherein an outer peripheral surface of the roller is configured to come into pressure contact with a pressure contact rail provided in the support mechanism. The dishwasher according to any one of claims 1 to 10, wherein the driving device is configured to move the moving unit at a moving speed of 150 mm / sec to 250 mm / sec. The dishwasher according to any one of claims 1 to 11, wherein the driving device is configured to move the moving unit with a kinetic energy of 0.5 J or less. The dishwasher according to any one of claims 1 to 12, wherein the control unit is configured to drive the driving unit with two or more steps of different voltages. The dishwasher according to any one of claims 1 to 13, wherein the control unit is configured to shut off a motor circuit when the driving unit is stopped. The dishwasher according to any one of claims 1 to 14, wherein the control unit is configured to drive the driving unit to a position where the tableware basket is substantially fully opened upward. Equipped with a remote control to send operation signals,
The dishwasher according to any one of claims 1 to 15, wherein the control unit drives the driving unit when detecting the predetermined operation signal from the remote controller.