JP2008073129A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe dishwasher with excellent handleability, in which a washing tub can be automatically opened and closed. <P>SOLUTION: The dishwasher includes: the washing tub 2 provided with an opening 2a for taking dishes 3 in and out on the upper side; an outer frame 1 for holding the washing tub 2; a washing means provided in the washing tub 2; a moving means 10 for making it possible to pull out the washing tub 2 from the outer frame 1 to the front; and a driving means 15 for moving the washing tub 2 in front and back directions by the moving means 10. In the operation of pulling out the washing tub 2 to the front or housing it inside the outer frame 1 by the driving means 15, a moving speed from a prescribed position to stoppage is lower than a moving speed from the start of movement to the prescribed position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an improvement of a dishwasher that draws out a washing tank from an outer frame (housing) to store and wash dishes.

  In this type of conventional dishwasher, the washing tank can be pulled forward by a slide rail, the drive motor shaft provided in the outer frame of the main body has a gear, the rack gear is provided in the washing tank, and the gear and the rack gear mesh with each other. The drive motor shaft rotates the gears, and the force that pushes the rack gear forward or pulls it back acts to move the cleaning tank in the front-rear direction. The cleaning tank is automatically pulled out and opened. Or closed by pushing.

  In this way, the operation force for pulling out or pushing in the cleaning tank is unnecessary, and the operability is improved (for example, see Patent Document 1).

JP 2002-345712 A

  However, in the above-described conventional technology, it is not possible to prevent the tableware from contacting each other only by making the moving speed of the cleaning tank constant or by simply slowing the speed before stopping, and there is a concern about damage.

  In addition, there is a problem that consideration for safety and comfort felt by the user is lacking with respect to a change in speed of the cleaning tank in an operation of moving the cleaning tank when the cleaning tank is opened or closed.

  In addition, if the manufacturer unilaterally sets the time required to pull out or push in the cleaning tank and there is no choice for the user, it may not fit the user's time sense. There is a problem that it feels bad, when it is too fast, it feels dangerous, and when it takes time, it feels awkward.

  In view of the above problems, an object of the present invention is to provide an easy-to-use safe dishwasher that can automatically open and close a washing tank.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In claim 1, a cleaning tank provided with cleaning means provided on the upper side with an opening through which tableware is put in and out, and the cleaning tank are accommodated. An outer frame, moving means connected to the outer frame to hold the cleaning tank so that the cleaning tank can be pulled forward from the outer frame, and driving means for moving the cleaning tank in the front-rear direction while being held by the moving means. The driving means pulls out the cleaning tank from a predetermined position before the cleaning tank finishes pulling out from the outer frame with respect to the moving speed of the section from the start of movement of the cleaning tank to the predetermined position when the cleaning tank is pulled forward. The moving speed of the section until it is completed or the section until the cleaning tank is completely stored from the predetermined position before it is stored in the outer frame is driven at a slower speed.

  Further, in claim 2, the driving means includes a time until the cleaning tank is completely pulled out from the outer frame and a time until the cleaning tank is completely retracted from the state where the cleaning tank is pulled out. Variable setting is possible.

  Since the dishwasher of the present invention is configured as described above, it is possible to achieve both quietness and agility when the washing tank moves.

  Moreover, since it starts slowly at the time of a movement of a washing tank, and stops slowly, contact with tableware can be prevented and damage can be prevented.

  In addition, by making the movement end speed slower than the movement start speed, it is possible to create a sense of safety and impress a sense of quality.

  In addition, since the user can select the operation time for opening and closing the cleaning tank, it can be selected according to the user's sense of time, which is very convenient.

  An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side sectional view showing a state in which a washing tub of a dishwasher according to an embodiment of the present invention is pulled out from an outer frame, FIG. 2 is a layout diagram of detection means for detecting the position of the washing tub, and FIG. FIG. 4 is a perspective view of the dishwasher showing a state in which the washing tank is pulled out from the outer frame, and FIG. 5 is a partially sectional perspective view showing the washing mechanism of the dishwasher. 6 is a perspective view showing the driving means provided in the cleaning tank, FIG. 7A is a diagram showing the relationship between the position and speed of the operation for opening the cleaning tank, and FIG. 7B is the operation for closing the cleaning tank. FIG. 8 (a) is a flowchart for controlling the position and speed of the operation for opening the cleaning tank, FIG. 8 (b) is a flowchart for controlling the position and speed for the operation for closing the cleaning tank, and FIG. Similarly, in the relationship diagram of notch and operation time set by time selection That.

  A dishwasher according to the present invention is incorporated as a part of a system kitchen, and a washing tub 2 having an opening 2a for taking in and out the tableware 3 on the upper side is put in and out in the horizontal direction inside an outer frame 1 incorporated in the kitchen. It is a structure that is freely stored and held. The tableware 3 can be set or taken out by pulling the cleaning tank 2 forward, opening the upper surface and opening the cleaning tank 2.

  A basket 4 for setting tableware 3 is housed in the cleaning tank 2, and a cleaning means such as a rotating nozzle 5 that rotates while spraying cleaning water upward is provided below the basket 4. Yes. The washing water sprayed from the rotary nozzle 5 is used to wash the dishes 3, and then is discharged from the washing tank 2 and pressurized by a cleaning mechanism 6 such as a pump, and is sprayed from the rotary nozzle 5 again to circulate the dishes. This is a configuration in which the class 3 is washed.

  When the cleaning of the tableware 3 is completed, the cleaning water is drained from the dishwasher main body 7 via a drain hose (not shown) by opening a valve (not shown).

  The front side of the cleaning tank 2 includes a door portion 8 that is pulled out to the front side, and a front end of the door portion 8 includes an operation portion 40.

  The operation unit 40 includes an open button 41 that is pressed when the cleaning tank 2 is opened, a close button 42 that is pressed when the cleaning tank 2 is closed, a fast button 43 for time selection, and a slow button 44, each of which is controlled. Connected to means 24.

  The ceiling portion of the outer frame 1 is provided with a water sealing inner lid 9 to prevent water leakage from between the inner lid 9 and the cleaning tank 2.

  The cleaning tank 2 is placed on a moving means 10 supported so as to be movable back and forth, and is configured such that the cleaning tank 2 can be pulled out to the front side or pushed into the back side.

  The moving means 10 that enables the cleaning tank 2 to move includes a slide rail fixing portion 11 provided on the outer frame 1 and a slide rail sliding portion 12 that is slidably supported with respect to the slide rail fixing portion 11. If the operating range is larger than the dimension of the cleaning tank 2, the upper surface of the cleaning tank 2 is opened when the cleaning tank 2 is pulled out. Is done.

Between the slide rail fixing part 11 of the moving means 10 and the slide rail sliding part 12, a ball bearing that operates linearly is provided, and the frictional load is reduced to move the slide rail sliding part 12. It is light enough to withstand the load even when the washing tub 2 is pulled out from the outer frame 1 with the weight of the washing tub 2 and the load of the tableware 3 and water applied. Have

  A concave bearing 13 is provided at one end of the slide rail sliding portion 12 that is drawn forward from the outer frame 1, and a shaft 14 provided at the front portion of the cleaning tank 2 is fitted into the slide rail sliding portion 12. The cleaning tank 2 is fixed to the slide rail sliding portion 12.

  A driving means 15 is provided at the rear part of the cleaning tank 2, and the driving means 15 transmits the driving force of the motor 16, the motor base 17 that fixes the motor 16, the axle 18, and the axle 18 and the driving force of the motor 16. A means (for example, a gear) 19, an axle bearing 20 that receives the axle 18, a bearing fixture 21, and a tire 22 that is fixed to the axle 18 are configured. The tire 22 travels straight on a road surface 23 fixed to the outer frame 1 in the vicinity of the moving means 10.

  Thus, the shaft 14 provided at the front portion of the cleaning tank 2 is configured to be fitted to the bearing 13 provided at one end of the slide rail sliding portion 12, and the tire provided at the rear portion of the cleaning tank 2. Reference numeral 22 denotes a configuration in which the washing tank 2 is placed on the upper surface of the road surface 23 fixed to the outer frame 1 by its own weight. The road surface 23 is provided along the slide rail fixing portion 11, and the length of the road surface 23 is larger than the moving distance of the slide rail sliding portion 12, that is, the distance that the cleaning tank 2 moves in the front-rear direction. It is comprised so that it may become. And the washing tank 2 is comprised so that the tire 22 of the drive means 15 fixed to the washing tank 2 may rotate and it may self-run.

  Therefore, the configuration is very simple, and the outer frame 1 is only ridden by the weight of the washing tub 2 on the tire 22, so that the accuracy in assembly can be roughly managed and can be manufactured at low cost.

Further, the weight of the washing tub 2 and the loads of the tableware 3 and water are such that the load applied to the moving means 10 from the shaft 14 at the front portion of the washing tub 2 via the bearing 13 and the rear portion of the washing tub 2. Since the load applied to the road surface 23 of the outer frame 1 via the tire 22 of the driving means 15 is dispersed, the load applied to the moving means 10 is reduced, and the moving means 10 can reduce the load resistance and thus reduce the cost. be able to.

  In addition, since the driving force of the cleaning tank 2 is moved forward and backward by the tire 22 of the driving means 15, even if the cleaning tank 2 is caught between the outer frame 1 and the cleaning tank 2 can be easily operated by the user. Because it can be pulled out and avoided, it is excellent in safety.

  Further, since the driving means 15 is fixed to the washing tank 2 and does not greatly affect the outer frame 1, it is easy to divert the washing tank 2 portion to an inexpensive dishwasher that does not have the driving means 15. This is possible and can be shared, so the cost can be reduced.

  The control unit 24 controls an input signal of the operation unit 40, energization of the motor 16 of the driving unit 15, and the like. Further, since the control unit 24 includes a power source, it supplies power to the drive unit 15, the operation unit 40, and the detection unit 26 described later. The connection cable 25 that connects the drive unit 15 and the control unit 24 is connected with a slack that is greater than the amount of movement of the cleaning tank 2 in the front-rear direction.

  The detection means 26 is arranged to detect the position of the cleaning tank 2 in all steps in which the cleaning tank 2 in the outer frame 1 moves. The detection means 26 includes a full-close detection means 27 for detecting that the cleaning tank 2 is housed in the outer frame 1 and the upper opening is closed, and a full-open detection means 28 for detecting that the upper opening is fully opened. And the first detection means 29 disposed between the fully open position and the fully closed position to the fully closed point, for example, about 20 to 30 mm, and the distance between the fully opened position and the fully closed position. Includes, for example, a second detection means 30 disposed about 20 to 30 mm in front.

  These detection means 26 are, for example, switches such as microswitches, or light detection elements in which a light emitting element and a light receiving element are arranged to face each other, and are predetermined while the cleaning tank 2 moves from a closed state to an open state. For example, a plate-shaped light blocking member provided in the cleaning tank 2 may block the light of the light detection element when the position reaches the position.

  Next, the effect | action by the above structure is demonstrated.

  When the user presses the open button 41 in the state where the fully closed detection means 27 detects that the cleaning tank 2 is closed and in the fully closed position, the control means 24 energizes the drive means 15 to rotate the tire 22. Therefore, the tire 22 moves and opens on the road surface 23 in the direction in which the cleaning tank 2 is opened (the direction in which the cleaning tank 2 is pulled out). As shown in FIG. 7A, the moving speed at this time is adjusted by adjusting the voltage applied to the motor 16 to start at a speed V2, and proceeds at the position of the first detecting means 29. When the signal is detected, the speed is increased so that the speed becomes V3, and when the signal of the second detection means 30 is detected at the position of the second detection means 30, the speed is lowered to V1 and the full open detection means 28 is detected. When the signal of the fully-open detection means 28 is detected at the position, the energization of the drive means 15 is stopped. By setting the speed at this time to V3> V1, V3> V2, since it starts slowly and stops slowly, it is possible to achieve both quietness and agility when the washing tank 2 moves.

  Moreover, since it starts slowly at the time of the movement of the washing tank 2, and stops slowly, the contact between the tableware 3 can be prevented and damage can be prevented.

  Further, by setting the speed to V2> V1, the speed at the end of the movement is made slower than the speed at the start of the movement, thereby creating a safe feeling and impressing a sense of quality.

When the cleaning tank 2 is closed, when the user presses the close button 42 while the signal of the full open detection means 28 is being input, it starts to advance to a speed V2 as shown in FIG. When the signal of the second detector 30 is detected at the position of the second detector 30, the speed is increased to V3, and when the signal of the first detector 29 is detected at the position of the first detector 29, the speed is increased. When the signal of the full-close detection means 27 is detected at the position of the full-close detection means 27, the energization of the drive means 15 is stopped. By setting the speed at this time to V3> V1, V3> V2, since it starts slowly and stops slowly, it is possible to achieve both quietness and agility when the washing tank 2 moves.

  Moreover, since it starts slowly at the time of the movement of the washing tank 2, and stops slowly, it can prevent contact between tableware and can prevent damage.

  In addition, by setting the speed to V2> V1, the speed at the end of the movement is slowly decelerated from the speed at the start of the movement, thereby creating a safe feeling and impressing a sense of quality.

  The fast button 43 and the slow button 44 for time selection provided in the operation unit 40 are used by setting the operating time of the cleaning tank 2 from fully closed to fully open and from fully open to fully closed according to preference. The set contents can be stored in the control means 24 and used repeatedly.

  For example, when setting the time until full closure, by pressing the fast button 43 or the slow button 44 while pressing the close button 42, the number of notches is changed and set as shown in FIG. . When the time until full opening is set, the fast button 43 or the slow button 44 is pressed while pressing the open button 41, and the notch numbers are changed and set as shown in FIG.

  Each notch is changed each time the fast button 43 or the slow button 44 is pressed while the close button 42 or the open button 41 is being pressed, and the time setting can be changed up to seven levels for the control means 24. By changing the notch number, the time becomes shorter as the notch number becomes smaller, and the time becomes longer as the notch number becomes larger. Then, the control means 24 changes the moving speed of the cleaning tank 2 according to the setting of the time in seven steps, and changes the speed of V3 while keeping V1 and V2 of the opening operation and the closing operation constant, and from fully closed to fully open. Then, the operation time from fully open to fully closed is controlled to be the set time. Note that the overall speed may be varied while the ratio of the speeds of V1, V2, and V3 is kept constant.

  In this way, although the user can select the operation time for opening and closing the cleaning tank 2 within a certain predetermined range, the user can select according to the time sense of the user, which is very convenient.

  In this embodiment, the moving speed of the cleaning tank 2 is shown in three stages of V1, V2, and V3. However, the speed is not limited to three stages, and the impact at the start and stop of the cleaning tank 2 is not limited. The number of steps may be increased so that the number can be reduced, or the speed may be gradually changed in an analog manner.

It is side surface sectional drawing which shows the state which pulled out the washing tank of the dishwasher concerning the Example of this invention from the outer frame. It is the arrangement drawing of the detection means which detects the position of a washing tank similarly. It is a perspective view which similarly shows the front operation part of a dishwasher. It is a perspective view of the dishwasher which similarly shows the state which pulled out the washing tank from the outer frame. It is a fragmentary sectional perspective view which similarly shows the washing | cleaning mechanism of a dishwasher. It is a perspective view which shows the drive means similarly comprised in a washing tank. (A) is the relationship diagram of the position and speed of the operation | movement which opens a washing tank similarly, (b) is the relationship diagram of the position and speed of the operation | movement which closes a washing tank similarly. (A) is the control flowchart figure of the position and speed of the operation | movement which opens a washing tank similarly, (b) is the control flowchart figure of the position and speed | rate of the operation | movement which similarly closes a washing tank. It is a related figure of notch and operation time similarly set by time selection.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer frame 2 Cleaning tank 2a Opening part 3 Tableware 10 Moving means 15 Driving means

Claims (2)

  A cleaning tank provided with cleaning means provided on the upper side with an opening for taking in and out tableware, an outer frame for storing the cleaning tank, and connected to the outer frame to pull the cleaning tank forward from the outer frame A moving means for holding the cleaning tank and a driving means for moving the cleaning tank in the front-rear direction while being held by the moving means, and the driving means starts to move the cleaning tank when the cleaning tank is pulled forward. From the predetermined position before the cleaning tank is completely pulled out from the outer frame or from the predetermined position before the cleaning tank is completely stored in the outer frame with respect to the moving speed of the section from the predetermined position to the predetermined position. A dishwasher that is driven at a slower moving speed in the section until finishing. 2. The dishwasher according to claim 1, wherein the driving unit includes a time until the cleaning tank is completely pulled out from the outer frame and a time until the cleaning tank is completely retracted from the state where the cleaning tank is pulled out. A dishwasher with variable time settings.

Images