JP2006181009A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher with excellent maintainability, permitting easy cleaning of the inner surface of an upper door body. <P>SOLUTION: The dishwasher comprises a washing tub 8 with a front opening 9 on the front face, mounted inside a body 7, the upper door body 10 to cover the upper part of the front opening 9 openably/closably, a lower door body 11 to cover the lower part of the front opening 9 openably/closably, a first motion restraining part 18 to support the upper door body 10 movably upward from the body 7, and an interlocking part 30 with one end rotatably connected to the lower door body 11 and the other end rotatably connected to the first motion restraining part 18 via a second connection part 31 for interlocking the motions of the upper door body 10 and the lower door body 11. The second connection part 31 consists of a first rotation shaft 39 mounted at the first motion restraining part 18 and a slot 38 disposed in the interlocking part 30, and has play in the direction of opening the upper door body 10. Since the upper door body 10 can be moved alone to the opening side by the play while the lower door body 11 is fixed at a position near the closed position, the inner surface of the upper door body 10 can be easily cleaned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door opening / closing mechanism of a dishwasher for washing dishes and the like.

  Conventionally, this type of dishwasher has been configured as shown in FIG. 4 (see, for example, Patent Document 1).

  Hereinafter, the configuration will be described. The dishwasher stores objects to be cleaned (not shown) such as tableware in the cleaning tank 1, and the front opening 1 a provided in the cleaning tank 1 is closed by the upper door body 2 and the lower door body 3 and then washed. By operating a pump (not shown) and injecting cleaning water, the cleaning and rinsing steps of the object to be cleaned were performed. The lower door body 3 has a lock means 3 a that holds the closed state with respect to the front opening 1 a and a handle portion 3 b that allows the user to open and close the lower door body 3. It is the structure which opens and closes to the front lower direction of 1a.

  On the other hand, the upper door body 2 is rotatably supported by the rotation fulcrum 5 and is opened in the upper space of the main body, so that the height necessary for opening and closing the upper door body 2 is kept small, and it can be installed even in a small height place. At the same time, the length of the upper door body 2 protruding forward from the front opening 1a in the open state of the upper door body 2 is made as small as possible so that there is no problem in taking in and out the object to be cleaned. It was.

Further, by interlocking the operations of the lower door body 3 and the upper door body 2 by the interlocking portion 6, the user can open and close the upper door body 2 simply by opening and closing the lower door body 3 by holding the handle portion 3b. The dishwasher was easy to use and was easy to use.
JP 2002-272660 A

  However, in the conventional dishwasher, the upper door body 2 is configured to open upward from the main body. Therefore, in order to clean the inner surface of the upper door body 2, before the upper door body 2 moves upward from the main body. In the initial opening stage of the upper door body 2, a hand is inserted between the upper and lower door bodies 2, 3, or a hand is inserted between the upper surface of the main body and the upper door body 2 with the upper and lower door bodies 2, 3 opened There was a problem that it was difficult to clean, because it was necessary to put a hand in a very narrow space.

  An object of the present invention is to solve the above-mentioned conventional problems, and to provide a dishwasher that can easily clean the inner surface of the upper door body and is excellent in maintainability.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a main body, a washing tank provided in the main body having a front opening portion on the front surface, and an upper portion of the front opening portion that covers the upper opening and closing. A door, a lower door that covers the lower portion of the front opening so as to be openable and closable, an operation restricting means that supports the upper door movably above the main body, one end of the lower door, and the other end Each of which is rotatably connected to the operation restricting means, and includes an interlocking portion that interlocks the operations of the upper door body and the lower door body, and the upper door body is connected to the connecting portion of the interlocking portion and the operation restricting means. With the play in the opening direction, the upper door can be moved to the open side by the amount of play with the lower door fixed in the vicinity of the closed position. The gap between the bodies can be increased, and the inner surface of the upper door body can be easily cleaned.

  In the dishwasher of the present invention, the user can arbitrarily increase the gap between the upper and lower door bodies, so that it is possible to easily put a hand through the gap to clean the inner surface of the upper door body, and good maintainability. Is.

  A first invention includes a main body, a cleaning tank having a front opening on the front surface and provided in the main body, an upper door body that covers an upper portion of the front opening so as to be openable and closable, and a lower portion of the front opening. A lower door body that can be freely opened and closed, an operation restricting means for supporting the upper door body so as to be movable upward of the main body, and one end rotatably connected to the lower door body and the other end to the operation restricting means. And an interlocking portion for interlocking the operations of the upper door body and the lower door body, wherein a play is provided in a connecting portion between the interlocking portion and the operation restricting means in a direction in which the upper door body is opened. In the state where the lower door body is fixed in the vicinity of the closed position, only the upper door body can be moved to the open side by the amount of play, so the gap between the upper and lower door bodies can be increased, Cleaning of the inner surface of the upper door body is facilitated.

  In the second invention, in particular, the connecting portion of the first invention is elastically urged in the direction in which the upper door body is closed, and it is possible to prevent backlash of the operation restricting means due to play provided in the connecting portion, A stable opening / closing operation along a predetermined locus of the upper door body can be realized.

  In the third invention, in particular, the connecting portion of the first or second invention is a heart cam mechanism, and once the upper door body is moved to the open side, the upper door body can be held at that position. The user does not need to keep the upper door body open when cleaning the upper door body, and can be returned to a predetermined position by moving the upper door body again to the open side, further improving the maintainability. be able to.

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

(Embodiment 1)
FIG. 1 is a cross-sectional view of a side wall of the dishwasher according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part of the dishwasher.

  1 and 2, a washing tub 8 is provided inside a dishwasher main body 7 (hereinafter referred to as “main body 7”), and an upper door body 10 is provided at each of the upper and lower portions of the front opening 9 of the washing tub 8. And the lower door body 11 are configured to be opened and closed. A table basket (not shown) in which an object to be cleaned (not shown) such as tableware is set is accommodated in the cleaning tank 8. One end of the slide support portion 12 that slidably supports the upper door body 10 is supported on the upper portion of the side wall of the cleaning tank 8 so as to be rotatable around the first rotation fulcrum 13, and the other end is provided on the upper door body 10. The slide groove 14 is slidably supported by two slide engagement portions 15.

  The groove width of the slide groove portion 14 is narrower than the other range only in the vicinity where the slide engagement portion 15 is engaged when the upper door body 10 is closed, and the slide groove portion 14 when the upper door body 10 is closed. The gap between the slide engagement portion 15 and the slide engagement portion 15 is set to the minimum necessary so that both parts are stretched when the processing error and the assembly error are taken into account and the opening / closing operation is not locked. A sufficient width is secured in the other range of the slide groove portion 14 so as not to affect the sliding of the slide engagement portion 15. In addition, the slide engaging portion 15 is provided with a rotatable roller portion 16 to smoothly slide the slide engaging portion 15 in the slide groove portion 14.

  Further, as an operation restricting means for opening and closing the upper door body 10 with a unique predetermined trajectory, the first operation restricting portion 18 and the second operation restricting portions which are rotatably connected by the first connecting portion 17 to each other. The other end of the first operation restricting portion 18 is rotatably supported by a second rotation fulcrum 20 provided on the side wall of the cleaning tank 8, and the second operation restricting portion is provided. The other end of 19 is fixed to a fixing point 21 provided at the lower end of the upper door body 10.

  An operation restricting portion storage port 22 is provided at a portion where the first operation restricting portion 18 and the second operation restricting portion 19 enter and exit from the side of the front surface of the dishwasher body 7. The first operation restricting portion 18 has a substantially V shape that protrudes downward in the opened state of the upper door body 10, and similarly to the operation restricting storage port 22 in the opened state of the upper door body 10. A first rib 23 that abuts is provided.

  The lower door body 11 is fixed to a lower support portion 25 that is rotatably supported by a third rotation fulcrum 24 in the vicinity of the lower end portion of the front opening 9 of the cleaning tank 8. To the position where the inner surface is horizontal and upward. The lower door body 11 is provided with a push button switch 26 and locking means 27 for fixing the lower door body 11 in a closed state, and interlocked with the push button switch 26 from a locking portion 28 provided on the side wall of the cleaning tank 8. The lock means 27 can be released. In order to seal the upper door body 10 and the lower door body 11 and the front opening 9 and between the upper door body 10 and the lower door body 11, the front opening 9 and the upper door body 10 are formed of an elastic body. A sealed member 29 is provided.

  In addition, one end of the interlocking portion 30 is rotatably connected to the first operation restricting portion 18 by the second connecting portion 31 serving as the connecting portion, and the other end is rotated by the lower support portion 25 and the third connecting portion 32. By freely connecting, the upper door body 10 and the lower door body 11 are configured to open and close in conjunction with each other. Further, the first holding part 33 provided in the interlocking part 30 and the second holding part 34 provided on the side wall of the cleaning tank 8 are connected by a first spring 35 (tensile coil spring), and the upper and lower door bodies 10 and 11 are connected. Is configured to be elastically biased in the opening direction. A protective member 36 is provided on a portion of the interlocking unit 30 exposed to the outside of the dishwasher body 7. Further, a stopper portion 37 is provided on the side wall of the cleaning tank 8 so as to contact the interlocking portion 30 and maintain the opened state of the door bodies 10 and 11.

  As shown in FIG. 2, the second connecting portion 31 includes a long hole 38 provided in the interlocking portion 30 and a first rotating shaft 39 provided in the first operation restricting portion 18. The elongated hole 38 has a shape having play in the direction in which the upper door body 10 opens with respect to the first rotation shaft 39, and the first rotation shaft 39 is formed by a second spring 40 (torsion coil spring). The upper door body 10 is urged with respect to the long hole 38 in the closing direction.

  The operation and action of the dishwasher configured as described above will be described. When the push button switch 26 is pressed, the locking means 27 is released, and the upper door body 10 and the lower door body are moved by the interlocking portion 30 biased to the open side of the lower door bodies 10 and 11 by the first spring 35. 11 can automatically open from the closed state to the open state in which the interlocking portion 30 contacts the stopper portion 37.

  Details of the opening operation of the upper and lower door bodies 10 and 11 are as follows.

  The opening operation of the lower door body 11 rotates forward and downward around the lower end of the cleaning tank 8 and rotates to a position where the inner surface thereof becomes upwardly horizontal. The upper door body 10 is supported by a slide support portion 12 whose one end side is rotatably supported by the side wall of the cleaning tank 8 and the slide groove portion 14 of the upper door body 10 is slid and supported at the other end side. Move with. As a result, the degree of freedom of the movement trajectory is higher than in the case where the support member is simply rotationally supported as in the conventional case of FIG. However, with this slide support portion 12 alone, the turning trajectory of the upper door body 10 is not uniquely determined, and the upper door body 10 may move freely and may collide with the upper surface of the main body 7 or the like. Therefore, the movement trajectory of the upper door body 10 is uniquely restricted by the first action restricting portion 18 and the second action restricting portion 19.

  As a result, the upper door body 10 can be moved above the main body 7 along the outer shell shape of the main body 7, and the installation height required for opening and closing the upper door body 10 is kept lower than before. A good dishwasher can be realized. Moreover, since the protrusion length which protruded ahead from the front opening part 9 of the upper door body 10 can also be made small in the fully opened state, the inside of the washing tank 8 is easy to see, and it is easy to use and does not interfere with the taking in and out of dishes. Machine can be realized.

  In the opened state of the upper and lower door bodies 10, 11, the operation restricting portion storage port 22 contacts the first rib 23 provided in the first operation restricting portion 18, so that the upper door body 10 is in the dishwasher. There is no wobbling on the upper surface of the main body 7, and the quality of the dishwasher is not impaired.

  After opening the upper and lower door bodies 10, 11, the tableware basket is pulled out to the lower door body 11 and an object to be cleaned is set. Here, since the tableware basket is pulled out on the inner surface of the lower door body 11, it is possible to prevent the dripping juice and water droplets from the object to be washed out.

  Subsequently, the tableware basket is stored in the washing tub 8 and the lower door body 11 is closed. Since the upper door body 10 and the lower door body 11 are configured to be opened and closed in conjunction with each other by the interlocking unit 30, the upper door body 10 is also closed at the same time.

  Since the clearance between the slide groove 14 and the slide engagement portion 15 is set narrow only when the upper door body 10 is closed, the backlash between the upper door body 10 and the slide support portion 12 is minimized when the door body is closed. In the middle of opening and closing, a stable door opening and closing operation is realized in which the slide groove portion 14 and the slide engagement portion 15 slide smoothly. Moreover, by providing the roller part 16 in the slide engagement part 15, the sliding resistance of the slide groove part 14 and the slide engagement part 15 can further be reduced, and a more stable door body opening / closing operation can be realized.

  Further, as shown in FIG. 2B, the lower door body 11 is fixed at the initial opening stage of the upper door body 10 before the upper door body 10 moves upward of the main body 7, and only the upper door body 10 is opened. By moving in the direction, the gap between the upper door body 10 and the lower door body 11 can be increased, and the inner surface of the upper door body 10 can be easily cleaned. When the user does not intentionally open only the upper door body 10, the first rotating shaft 39 is moved to a predetermined position as shown in FIG. It is hold | maintained and the stable opening / closing operation | movement of the door bodies 10 and 11 is realizable.

(Embodiment 2)
FIG. 3 is a cross-sectional view of an essential part of a dishwasher according to the second embodiment of the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, the second connecting portion 31 in the first embodiment is a heart cam mechanism. Specifically, the second connecting portion 31 is a second rotation provided in the interlocking portion 30. The shaft 41 and a heart-shaped cam groove 42 provided in the first operation restricting portion 18 are configured. The second rotating shaft 41 is biased by a third spring 43 (torsion coil spring), and is held at a predetermined position shown in FIG.

  By fixing the lower door body 11 at the initial opening stage of the upper door body 10 before the upper door body 10 moves upward of the main body 7 and moving only the upper door body 10 in the opening direction, the second rotating shaft 41 moves in the cam groove 42, and as shown in FIG. 3 (b), the gap between the upper door body 10 and the lower door body 11 can be kept large, and the user can hold the upper door body 10 in the state. There is no need to keep it, and the inner surface of the upper door body 10 can be cleaned more easily.

  Further, when the upper door body 10 is moved again in the opening direction in the state of FIG. 3B, the second rotating shaft 41 moves in the cam groove 42, and reaches the predetermined position shown in FIG. Can be returned. Further, when the user intentionally does not open only the upper door body 10, the second rotating shaft 41 is urged by the third spring 43 as shown in FIG. It is held at a predetermined position, and a stable opening / closing operation of the upper and lower door bodies 10 and 11 can be realized.

  The opening / closing link mechanisms of the upper and lower door bodies 10 and 11 described above are provided on the right and left sides of the cleaning tank 8 and the upper and lower door bodies 10 and 11.

  As described above, the dishwasher according to the present invention can perform door opening and closing operations that are easy to install and easy to use, and it is extremely easy to maintain the inner surface of the upper door body. It can be applied to various devices such as washing machines, washing machines and cooking equipment that use the body.

Sectional drawing of the side wall part of the dishwasher in the 1st Embodiment of this invention (A) Main part sectional view at the time of normal opening and closing of the upper door body of the dishwasher (b) Main part sectional view at the time of internal cleaning of the upper door body of the dishwasher (A) Main part sectional drawing at the time of normal opening and closing of the upper door body of the dishwasher in Embodiment 2 of this invention (b) Main part sectional drawing at the time of the inner surface cleaning of the upper door body of the dishwasher Main sectional view of the side wall of a conventional dishwasher

Explanation of symbols

7 Dishwasher body (main body)
8 Cleaning tank 9 Front opening 10 Upper door body 11 Lower door body 18 First operation restricting portion (operation restricting means)
30 interlocking part 31 2nd connection part (connection part)
38 Long hole 39 First axis of rotation

Claims (3)

A main body, a cleaning tank having a front opening on the front surface and provided in the main body, an upper door body that covers an upper part of the front opening so as to be opened and closed, and a lower door that opens and closes a lower part of the front opening. A body, an operation restricting means for movably supporting the upper door body above the main body, one end rotatably connected to the lower door body, and the other end to the operation restricting means. A dishwasher provided with play in a direction in which the upper door is opened at a connecting portion between the interlocking portion and the operation restricting means. The dishwasher according to claim 1, wherein the connecting portion is elastically biased in a direction in which the upper door body is closed. The dishwasher according to claim 1 or 2, wherein the connecting portion is a heart cam mechanism.

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