JP6339551B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher, and more particularly to a dishwasher configured to allow a washing tank to be taken in and out in a substantially horizontal direction through a front opening of a washing machine body.

  In a built-in type dishwasher for incorporation into a system kitchen etc., the so-called washing tank can be slid in and out in a substantially horizontal direction through the front opening provided on the front side of the washing machine body, so-called Drawer-type dishwashers are widely used.

  As such a dishwasher, Patent Document 1 discloses a gripping part that a user grips when pulling out a cleaning tank from an opening in front of the apparatus main body, and a user's fingers when gripping the gripping part. There has been proposed a dishwasher comprising a finger insertion part for inserting a finger and a finger insertion detection means for detecting that a user's finger has been inserted into the finger insertion part.

  In this dishwasher, the finger insertion detection means includes a light emitting unit made of an LED or the like, and a light receiving unit made of a phototransistor for receiving light emitted from the light emitting unit, and the finger inserted into the finger insertion unit A finger insertion state is detected by detecting a light blocking state in which light emitted from the light emitting unit is blocked.

  Further, in the dishwasher of Patent Document 1, when the finger insertion state is detected, the control means sends a stop command for stopping the operation of the pump, and the rotation speed detection means detects the rotation speed of the pump. However, when it is detected that the cleaning liquid is below a predetermined speed at which it does not leak out of the cleaning tank, the lock by the lock mechanism is released and the cleaning tank can be pulled out from the storage position.

  As a result, when it becomes necessary to pull out the cleaning tank during the cleaning operation, the cleaning tank can be pulled out without causing a situation such as ejection of cleaning water, and the lock mechanism may be subjected to a large impact. Therefore, it is said that it is possible to provide a dishwasher with less operability and durability.

Japanese Patent Laid-Open No. 2015-19918

  However, in the dishwasher of Patent Document 1, when pulling out the washing tank from the opening in front of the device main body, when the user grips the gripping portion described above, the user inserts the finger into the finger insertion portion. There is a risk of water entering from the outside of the main body of the washing machine.

  And if the water that has entered from the outside of the main body of the washing machine adheres to the light receiving part or the light receiving part provided in the finger insertion part, it becomes impossible to properly detect whether or not the user's finger has been inserted. There is a possibility that gripping of the grip portion by the user's fingers cannot be detected properly.

  The present invention solves the above-mentioned problem, and when the user puts a finger into the finger insertion part and grips the grip part in order to pull out the cleaning tank from the front opening of the cleaning machine body, the cleaning machine body Even when water enters the finger insertion part from the outside, it is possible to prevent water from entering the detection mechanism and properly detect that the grip part is gripped by the user's finger. The object is to provide a dishwasher.

In order to achieve the above object, the dishwasher of the present invention comprises:
A washing tank in which dishes to be washed are stored;
A pump that circulates cleaning liquid for washing dishes,
Control means;
A cleaning machine main body having a front opening through which the cleaning tank is taken in and out, and performing a cleaning operation by operating the pump according to an operation command sent from the control means to the pump;
A door that opens and closes the front opening of the cleaner body;
A gripping portion that is disposed on the door and is gripped by a user when pulling out the cleaning tank from the front opening, and includes a finger insertion portion into which the user inserts a finger when gripping When,
A shaft disposed along the width direction of the door,
A lever body that is pivotally supported by the shaft body and swings around the axis with rotation about the axis of the shaft body;
A shaft body rotation detection unit that is disposed apart from the finger insertion unit in the lateral width direction of the door unit and detects the rotation of the shaft body; and
The lever body, the shaft body, and the shaft body rotation detection unit constitute a lever body grip detection unit that detects that the lever body is gripped by a finger inserted into the finger insertion unit ,
Between the finger insertion unit and the shaft body rotation detection unit, a water droplet scattering prevention unit that receives water droplets scattered from the finger insertion unit to the shaft body rotation detection unit is disposed ,
The water droplet scattering prevention part is disposed so as to be located on both sides of the upper partition when viewed in the axial direction of the shaft body and the upper partition having an inverted U-shaped groove whose lower end is released. A first lower partition with a U-shaped groove with an open upper end and a second lower partition with a U-shaped groove with an upper end released;
The shaft body is sandwiched from above and below by the grooves of the upper partition and the grooves of the first and second lower partitions, and the shaft of the upper partition and the first and second lower partitions The shaft body is pivotally supported by a bearing that is formed by the groove of the side partition and has a substantially circular shape when viewed from the side, so that water droplets are prevented from being scattered .

  In the dishwasher of the present invention, the washing machine body includes a cover body that receives the falling water, and a guide section that guides the water droplets received by the water droplet scattering prevention section to the cover body. Preferably it is.

  Moreover, it is preferable that the shaft body located between the finger insertion portion and the shaft body rotation detection portion is provided with a weir portion that suppresses the flow of water along the shaft body. .

  In addition, the cleaning machine main body includes a cover body that receives the falling water, and a second guiding portion that guides the water that has been blocked by the dam portion and dropped to the cover body. Is preferred.

Dishwasher of the present invention, between the finger inserting portion and the shaft rotation detection unit, equipped with a water droplet scattering prevention section to stop receiving the water droplets scattered from the finger insertion portion to the shaft rotation detection unit, water drops The anti-scattering part is disposed so as to be positioned on both sides of the upper partition when viewed in the axial direction of the shaft body and the upper partition having an inverted U-shaped groove with the lower end released. A first lower partition provided with a released U-shaped groove and a second lower partition provided with a U-shaped groove whose upper end is released; In a side view, the groove is sandwiched between the partition groove and the first and second lower partition grooves, and is formed by the upper partition groove and the first and second lower partition grooves. It is configured so that splashing of water droplets is suppressed by the shaft body being pivotally supported by the substantially circular bearing. Since it is, scattering of water drops from the finger insertion portion to the shaft rotation detection unit is suppressed, when the user grasps the grip portion when pulling out the cleaning tank from the front opening of the washing machine body, the finger inserting Even when water enters the unit from the outside of the device, the scattering of water to the shaft body rotation detection unit is suppressed, and it is possible to appropriately detect that the grip unit is gripped by the user's fingers.

  Further, in the dishwasher of the present invention, the washing machine main body includes a cover body that receives the falling water, and also includes a guide unit that guides the water droplets received by the water droplet scattering prevention unit to the cover body, It is possible to suppress the water droplets received by the water droplet scattering prevention unit from flowing out of the cleaning machine main body.

  Further, in the case where the shaft body located between the finger insertion portion and the shaft body rotation detection unit is configured to have a weir portion that suppresses the flow of water along the shaft body, Since the flow of water from the finger insertion part to the shaft body rotation detection part is suppressed, it is possible to more reliably detect that the grip part is gripped by the user's finger, and the present invention is further effective. It can be announced.

  In addition, when the washing machine main body has a cover body that catches the falling water, and a second guiding portion that guides the dropped water that is blocked by the dam portion to the cover body. In this case, it is possible to suppress the water that has been dammed up by the dam portion and dropped from flowing out of the main body of the washing machine, and the present invention can be made more meaningful.

It is a schematic perspective view which shows the whole structure of the dishwasher concerning embodiment of this invention. It is side surface sectional drawing which shows the case where the washing tank which comprises the dishwasher concerning embodiment of this invention exists in a drawer state. It is a figure explaining operation | movement of the dishwasher concerning embodiment of this invention, Comprising: It is a figure which shows the case where a washing tank exists in a drawer state. It is side surface sectional drawing which shows the case where the washing tank which comprises the dishwasher concerning embodiment of this invention exists in the intermediate state between a drawer | drawing-out state and a storage state. It is a figure explaining operation | movement of the dishwasher concerning embodiment of this invention, Comprising: It is a figure which shows the case where a washing tank exists in the intermediate state of a drawer | drawing-out state and a storage state. It is side surface sectional drawing which shows the case where the washing tank which comprises the dishwasher concerning embodiment of this invention exists in the accommodation state. It is a figure explaining operation | movement of the tableware washing machine concerning embodiment of this invention, Comprising: It is a figure which shows the case where a washing tank exists in the accommodation state. It is a top view which abbreviate | omits one part and shows the accommodation state of the washing tank which comprises the dishwasher concerning embodiment of this invention. It is a top view which shows the accommodation state of the washing tank which comprises the dishwasher concerning embodiment of this invention except an inner cover. It is a perspective view which shows the attachment state to the washing machine main body of the clamp member which comprises the dishwasher concerning embodiment of this invention. It is a top view of the lock mechanism which comprises the dishwasher concerning embodiment of this invention. It is a side view of the lock mechanism which constitutes the dishwasher concerning the embodiment of the present invention, (i) when a washing tub is in a storing state, (b) is a state where a washing tub was pulled out to the 1st drawer position (C) is a diagram showing a case where the locked state is released. It is principal part side sectional drawing which shows the attachment state of the washing tank position sensor which comprises the dishwasher concerning embodiment of this invention. It is a block diagram which shows schematic structure of the operation control system of the dishwasher concerning embodiment of this invention. It is a rear view which shows typically the principal part (upper part) in the door part which comprises the dishwasher concerning embodiment of this invention. It is a sectional side view which shows typically the principal part of the dishwasher concerning embodiment of this invention. (A) is the finger insertion part in the state where the finger is not inserted into the finger insertion part of the door part constituting the dishwasher according to the embodiment of the present invention, and the lever body is not gripped, (b) It is a figure which shows the principal part structure of the shaft body rotation detection part in a state. (A) is the finger insertion part (a finger is not shown) in the state by which a finger is inserted in the finger insertion part of the door part which comprises the dishwasher concerning embodiment of this invention, and the lever body is gripped, ( b) is a diagram showing a main part of the shaft body rotation detection unit in this state. It is side sectional drawing of the principal part of the door part which comprises the dishwasher concerning embodiment of this invention.

  Hereinafter, the embodiment of the present invention will be shown and the features thereof will be described in more detail.

[Embodiment 1]
1 is a schematic perspective view showing the overall configuration of a dishwasher according to an embodiment of the present invention, FIG. 2 is a side cross-sectional view showing a drawer state of the washing tank, and FIG. 3 is an operation explanatory diagram showing a drawer state of the washing tank, 4 is a side sectional view showing an intermediate state between the drawer state and the storage state of the cleaning tank, FIG. 5 is an operation explanatory diagram showing an intermediate state between the drawer state and the storage state of the cleaning tank, and FIG. 7 is a side sectional view showing the storage state of the tank, FIG. 7 is an operation explanatory view showing the storage state of the cleaning tank, FIG. 8 is a plan view showing a part of the storage state of the cleaning tank, and FIG. It is a top view which shows a state except an inner cover.

The dishwasher of this embodiment is substantially box-shaped, and is provided with a front surface opening 3 for taking in and out the cleaning tank 2 on the front side, and is provided with a main body (main body casing) 1. The above-described cleaning tank 2 is stored in a storage space inside the door in such a manner that it can be taken in and out in a substantially horizontal direction through the front opening 3.
On the upper surface side of the cleaning tank 2, an upper surface opening 4 is provided for taking in and out tableware 5 (FIG. 1) and a cleaning basket 6 (FIG. 6 and the like). Further, an inner lid 10 that opens and closes the upper surface opening 4 of the cleaning tank 2 is disposed in an upper portion inside the cleaning machine main body 1 in a state where the inner lid 10 is held so as to be movable up and down in a substantially vertical direction. Further, in the washing machine main body 1, a pump for circulating a washing liquid for washing dishes is provided in order to perform a washing operation, although not shown.

  In addition, a pair of left and right rails 7 for guiding when the cleaning tank 2 is put in and out is disposed inside the cleaning machine body 1, and the cleaning tank 2 is connected to the cleaning machine body 1 via the pair of left and right rails 7. The storage space is configured to be slidable in the storage movement direction indicated by arrow A and in the drawer movement direction indicated by arrow B.

  The cleaning tank 2 is provided with a door 9 for opening and closing the front opening 3 of the cleaning machine main body 1 on the front side thereof. The door 9 has a gripping part (grip) for gripping when the cleaning tank 2 is pulled out. 8 and an operation panel having an operation / stop switch 57 and the like for the user to perform the cleaning operation and stop the operation. In addition, the gripping unit 8 includes a finger insertion unit 108 through which a user inserts a finger when gripping the gripping unit 8.

  Then, when the user holds the gripping part (grip) 8 and slides the cleaning tank 2 in the moving direction B, the cleaning tank 2 is moved to the front side of the main body 1 as shown in FIG. The tableware 5 and the washing basket 6 can be taken out and stored by being pulled out. In addition, the user can slide the cleaning tank 2 in the storage movement direction A to store the cleaning tank 2 in the cleaning machine main body 1 so that the tableware 5 can be cleaned or dried. It is configured.

  The inner lid 10 is configured to open and close so that the cleaning tank 2 is closed when the cleaning tank 2 is housed in the cleaning machine body 1 and is opened when the cleaning tank is pulled out from the cleaning machine body 1. In the closed state, it is possible to suppress and prevent the washing water from splashing from the washing tub 2 at the time of washing dishes, and in the open state, the tableware 5 and the like can be taken in and out of the washing tub 2. Yes.

  A pair of front and rear cam pins 37 (FIG. 3) functioning as cam followers are provided on the left and right sides of the inner lid 10 so as to protrude outward. Further, between the upper portion of the inner lid 10 and the front end portion of the cleaner main body 1, a lid spring 38 made of a coil spring that biases the inner lid 10 toward the front opening 3 of the cleaner main body 1 is provided. It is intervened.

  Further, at the upper left and right side ends of the inside of the cleaning machine main body 1, as shown in FIG. 10, the pair of front and rear holding tongues 23 individually correspond to the cam pins 37 of the inner lid 10. And are provided integrally. A clamp member 26 is fitted between the pair of front and rear holding tongue pieces 23 so as to be movable in the up-down direction (direction indicated by reference numeral C).

  Each clamp member 26 is made of a molded product made of synthetic resin or metal, and the upper portion thereof has cam grooves 22 into which the above-described cam pins 37 of the inner lid 10 are fitted, and the outer sides of both ends of the cam grooves 22. A holding piece 24 is formed which is positioned and held in contact with the upper edge of each holding tongue piece 23. Further, a receiving surface 35 (FIG. 3A, etc.), which will be described later, of the cleaning tank 2 is in contact with the lower portion of the clamp member 26 so as to restrict the movement of the clamp member 26 in the vertical direction C. A portion 25 is formed.

  As shown in FIG. 3, the cam groove 22 is formed in a substantially V shape symmetrically about the center line L. When the cleaning tank 2 is stored in the cleaning machine main body 1, the cam pin 37 is a cam. When the washing tub 2 is pulled out from the washing machine main body 1 at the lowermost position of the groove 22, the cam pin 37 moves to the uppermost position of the cam groove 22.

  The cleaning tank 2 is formed with flange portions 32 (FIGS. 3 (A) and 5 (A)) projecting outwardly on each side along the outer periphery of the upper surface opening 4, and each of the left and right sides thereof Receiving surfaces 35 (FIGS. 3 (A) and 5 (A)) are formed in a state of projecting downward from the flange portion 32, and the lower edge of each receiving surface 35 is formed on the contact portion 25 of the clamp member 26. Opposite.

  A pair of guide levers 11 (FIGS. 3 and 5) serving as an inner lid opening / closing operation tool are respectively arranged at the upper left and right positions on the inner rear side of the cleaning machine body 1. Each guide lever 11 includes an attachment fixing portion 12 fixed to the washing machine main body 1, a swing support shaft 39, a push lever 13, and a guide pin 14. The proximal end side of the push lever 13 is pivotably mounted about a swinging support shaft 39 provided in the mounting and fixing portion 12, and a cylindrical shape extending in the vertical direction on the distal end side. Guide pins 14 are provided.

  On the other hand, on the left and right sides of the rear end portion of the inner lid 10, elongated holes 16 (FIG. 3A) extending in a direction orthogonal to the moving direction of the cleaning tank 2 are formed. The guide pin 14 at the front end of this is always inserted. As a result, the push lever 13 can swing within a slidable range in which the guide pin 14 slides along the elongated hole 16, and accordingly, the inner lid 10 also falls within the swayable range of the push lever 13. It is configured to move along the front-rear direction (the left-right direction in FIG. 3B). Since the cam pins 37 are fixed to the left and right of the inner lid 10 as described above, the cam pins 37 slide along the cam grooves 22 of the clamp member 26 as the inner lid 10 moves back and forth. .

  Further, as shown in FIG. 9, cleaning tank grooves 15 are provided individually corresponding to the guide levers 11 on the upper left and right of the rear end of the cleaning tank 2. For example, as shown in FIG. 3B, the cleaning tank groove 15 is formed in a state surrounded by a front-side contact portion 17 and a rear-side contact portion 18, The contact portion 17 extends to the side surface of the cleaning tank 2, and the back contact portion 18 is formed so as to recede backward in the middle. And each washing tank groove | channel 15 is comprised so that engagement / disengagement with the guide pin 14 of the front-end | tip of the push lever 13 by rocking | fluctuation of the push lever 13 may be carried out.

In addition, a pair of left and right toggle mechanisms 27 for assisting the moving force when the cleaning tank 2 is moved in the storage movement direction and the drawer movement direction are provided at a rear portion in the cleaning machine main body 1.
Each toggle mechanism 27 is provided with an engaging pin 36 at the rear end portion of the cleaning tank 2, while a substantially L-shaped lever 29 is rocked by a pivot pin 31 at the rear end portion of the cleaning machine body 1. An engagement notch 28 that engages with the engagement pin 36 is formed on one end side of the lever 29 that sandwiches the pivot pin 31, and the other end has one end on the cleaning machine body 1. The other end of the fixed coil spring 30 (FIGS. 3 (A) and 5 (A)) is attached. As a result, the biasing force (rotation direction) of the coil spring 30 with respect to the lever 29 is configured to switch between the clockwise direction and the counterclockwise direction at the setting switching position D shown in FIG. .

  Moreover, in the dishwasher concerning this embodiment, the lock mechanism 40 is provided in the rear part side in the washing machine main body 1. FIG. The lock mechanism 40 has a function of preventing the cleaning tank from being pulled out when the cleaning tank 2 in a predetermined storage position in the cleaning machine body 1 is pulled out during the cleaning operation, and the cleaning operation is performed. If not, or when the amount of cleaning liquid ejected from the pump 59 is such that the cleaning liquid is not ejected from the cleaning tank 2 to the outside, the cleaning tank 2 is removed from the cleaning machine body 1. It is comprised so that the function which accept | permits drawing out can be fulfill | performed.

  In the case of this embodiment, the lock mechanism 40 is, as shown in FIGS. 11 and 12 (A), (B), (C), specifically, as a locked portion at the rear end of the cleaning tank 2. The strike pin 41 is disposed, and the cleaning tank 2 stored in a predetermined storage position of the cleaning machine main body 1 (in this embodiment, the innermost position of the cleaning machine main body 1) is pulled out to the first extraction position. Sometimes, a hook 42 as a locking member for locking the strike pin 41, a torsion spring 43 as a locking biasing means for biasing the hook 42 toward the locking position of the strike pin 41, and this torsion A cam 44 as an unlocking drive means for operating the hook 42 from the position of engagement with the strike pin 41 to the position of non-engagement, that is, the position disengaged from the strike pin 41 against the urging force of the spring 43. By arranging each one, It is. The cam shaft 48 of the cam 44 is connected to a cam drive motor (not shown) that drives the cam 44 to rotate.

  Incidentally, since a gap as play is provided between the strike pin 41 and the hook 42 in the predetermined storage position of the cleaning machine body 1, the cleaning tank 2 is moved from the rearmost storage position to the strike pin 41. The cleaning tank 2 can be pulled out only to the first drawing position where the hook 42 comes into contact, that is, the dimension corresponding to the gap as the play.

FIG. 12 (a) shows the positional relationship between the strike pin 41 and the hook 42 when the cleaning tank 2 is located on the innermost side of the cleaning machine main body 1 (in the predetermined storage position). FIG. 12B shows a state in which the strike pin 41 and the hook 42 are engaged when the cleaning tank 2 is pulled out to the first pull-out position.
FIG. 12C shows a state in which the hook 42 is held in the non-locking position where it is detached from the strike pin 41 (that is, the lock by the lock mechanism 40 is released, and the washing tank 2 can be freely taken in and out. Possible state).

  Moreover, in the dishwasher of this embodiment, when the washing tank 2 is pushed into the innermost side of the washing machine body 1 and is in a predetermined storage position, the distance G between the strike pin 41 and the hook 42 is 3 mm ( 12 (a)), the state where the cleaning tank 2 is pulled out 3 mm from the predetermined storage position and the hook 42 is in contact with the strike pin 41 is the state where the cleaning tank 2 is pulled out to the first pull-out position ( The state is as shown in FIG.

  As can be understood from the above description, the cleaning tank 2 is pushed into the innermost side of the cleaning machine main body 1 in which the strike pin 41 and the hook 42 have the positional relationship shown in FIG. From the position to the position immediately before the cleaning tank 2 is pulled out to the first drawing position (immediately before the strike pin 41 and the hook 42 are in the positional relationship shown in FIG. 12 (b)). An area | region will be in the state which has the washing tank 2 in this invention in a predetermined accommodation position.

Further, the hook 42 is swingably supported by a support shaft 45 fixed to the cleaning machine main body 1, and is directed toward a position where the strike pin 41 is locked by a torsion spring 43 wound around the support shaft 45. It is biased (biased clockwise in FIG. 12). Further, the hook 42 is formed with an inclined portion 46 at a tip portion facing the strike pin 41. The inclined portion 46 smoothly moves the hook 42 to the non-locking position against the urging force of the torsion spring 43 due to the strike pin 41 coming into contact when the drawn washing tank 2 is pushed to a predetermined position. It acts to move. When the cleaning tank 2 returns from the first drawing position to the back side (predetermined storage position), the strike pin 41 is again locked by the hook 42.

Further, as shown in FIG. 11, the hook position as a locking member position sensor for detecting whether the hook 42 is in the locking position or the non-locking position in the vicinity of the light shielding member 47 of the hook 42. A sensor 50 is provided. The hook position sensor 50 is composed of, for example, a photocoupler in which a light projecting unit 50a and a light receiving unit 50b are arranged to face each other.
Further, a light shielding member 47 protrudes at a position on the opposite side across the inclined portion 46 and the support shaft 45 of the hook 42. In the configuration of this embodiment, as shown in FIG. 12A, when the light blocking member 47 of the hook 42 is interposed between the light projecting unit 50a and the light receiving unit 50b, the output of the light receiving unit 50b is turned off. It is detected that the hook 42 is in the locked position. Further, as shown in FIG. 12C, when the light shielding member 47 is detached from between the light projecting unit 50a and the light receiving unit 50b, the output of the light receiving unit 50b is turned on, and the hook 42 is in the non-locking position. It is detected.

  Further, as shown in FIGS. 13A and 13B, a mounting plate 52 is provided at the rear end of the cleaning tank 2, and a cleaning tank position sensor 53 is fixed to the mounting plate 52. A lever 54 is swingably attached in the vicinity of the tank position sensor 53. Further, a protrusion 56 for pressing the lever is formed on the mounting plate 55 of the rail 7 of the cleaning machine body 1 at a position facing the lever 54.

  The cleaning tank position sensor 53 detects whether or not the cleaning tank 2 is at a predetermined storage position. Like the hook position sensor 50 described above, for example, a light projecting unit 53a and a light receiving unit 53b are arranged to face each other. Photocoupler. Then, as shown in FIG. 13 (a), when the lever 54 is separated from the projection 55 and is positioned between the light projecting portion 53a and the light receiving portion 53b, the output of the light receiving portion 53b is turned off. It is detected that the tank 2 is pulled forward from the predetermined storage position, that is, that the cleaning tank 2 is pulled out to the first drawer part or a position outside the first drawer part, as shown in FIG. As shown in the figure, when the lever 54 is pressed by the projection 55 and separated from between the light projecting portion 53a and the light receiving portion 53b, the output of the light receiving portion 53b is turned on, so that the cleaning tank 2 is stored in a predetermined storage position. Is configured to be detected.

  In the dishwasher of this embodiment, as shown in FIG. 15, the user's fingers are inserted into the finger insertion portion 108 of the grip portion 8 that is gripped when the washing tub 2 is pulled out, and a lever body (door lever) Lever body grip detection means 109 is provided to detect when 112 (FIGS. 15 to 18) is gripped and swings forward. The lever body gripping detection means 109 will be further described later.

  FIG. 14 is a block diagram showing a schematic configuration of the operation control system of the dishwasher of this embodiment.

The controller 58 as a control means is composed of, for example, a microcomputer. By installing a predetermined control program, an operation signal from the operation / stop switch 57, and the hook position sensor 50 and the washing tank position sensor 53 are used. Based on this detection signal, the pump 59 for circulating the cleaning liquid and the operation of the cam drive motor 60 for driving the cam 44 are controlled. Dishwasher of this embodiment further comprises a rotational speed detecting means 59a for detecting the rotational speed of the pump 59, the rotational speed detecting means 59a is, as the rotational speed of the pump 59, the external cleaning liquid of the cleaning tank 2 The controller 58 is configured to send a signal that allows the cleaning tank 2 to be pulled out from the cleaning machine main body 1 when a speed at which the cleaning tank 2 is not ejected is detected.
The control operation by the controller 58 will be described in detail below.

Next, operation | movement of the dishwasher provided with the said structure is demonstrated.
(1) Opening / Closing Operation of Inner Lid 10 Accompanying Storage and Drawer Movement of Washing Tank 2 When the washing tank 2 is pulled out from the washing machine main body 1, as shown in FIG. Since the guide pins 14 are detached from the cleaning tank groove 15 and the inner lid 10 is pulled by the lid spring 38 toward the front opening side of the cleaner body 1, each guide pin 14 is a long hole in the inner lid 10. 16 is located at a position on the outer end side (hereinafter referred to as a drawer operation position). For this reason, the cam pin 37 of the inner lid 10 has moved to the uppermost position of the cam groove 22 of the clamp member 26, and the inner lid 10 has been lifted away from the upper surface opening 4 of the cleaning tank 2.

  If the cleaning tank 2 is gradually moved in the storage movement direction A from this state, the cleaning tank groove 15 remains on the guide pin 14 until the cleaning tank 2 reaches the intermediate position shown in FIGS. 4 and 5. Since they are not engaged, the guide pin 14 is held in the pull-out operation position.

  When the cleaning tank 2 reaches the intermediate position shown in FIGS. 4 and 5, the near-side contact portion 17 of the cleaning tank 2 contacts the guide pin 14 as shown in FIG. When the cleaning tank 2 is further moved in the storage movement direction A, the guide pin 14 is pressed by the near-side contact portion 17 of the cleaning tank 2, so that the guide pin 14 moves inward along the elongated hole 16 of the inner lid 10. And slides into the cleaning tank groove 15. As a result, the push lever 13 rotates counterclockwise in the figure. By rotating the push lever 13, the inner lid 10 is pushed and moved in the storage movement direction A against the pulling force of the lid spring 38. Therefore, the cam pin 37 of the inner lid 10 moves from the uppermost position of the cam groove 22 of the clamp member 26 toward the lowermost position, and as a result, the inner lid 10 descends toward the upper surface opening 4 of the cleaning tank 2. .

  When the cleaning tank 2 is moved to a predetermined storage position, as shown in FIG. 7B, each guide pin 14 is positioned on the inner end side in the elongated hole 16 of the inner lid 10 (hereinafter referred to as a storage operation position). Migrate to Along with this, the cam pin 37 of the inner lid 10 moves to the lowest position of the cam groove 22 of the clamp member 26, and as a result, the contact portion 25 of each clamp member 26 contacts the receiving surface 35 of the cleaning tank 2. The clamp member 26 is prevented from moving in the opening / closing direction C, and the inner lid 10 is pressed against the cleaning tank 2 so that the upper surface opening 4 of the cleaning tank 2 is reliably sealed.

On the other hand, when the cleaning tank 2 is moved further outward from the first drawing position (moved in the drawing movement direction B (see FIG. 6)), the operation is the reverse of the above description. That is, the pressing action on the guide pin 14 by the front side abutting portion 17 of the cleaning tank 2 is released, and the pulling force of the lid spring 38 is applied to the inner lid 10. The cam pin 37 of the inner lid 10 moves from the lowermost position to the uppermost position of the cam groove 22 of the clamp member 26 while sliding along the elongated hole 16 from the storing operation position toward the pulling operation position. As a result, the inner lid 10 is separated from the upper opening of the cleaning tank 2 and is opened.
However, when the cleaning tank 2 is in the first drawer position, the inner lid 10 is pressed against the cleaning tank 2 so that the upper surface opening 4 of the cleaning tank 2 is securely sealed. It is configured.

  As described above, when the cleaning tank 2 is moved and retracted, the inner lid 10 is interlocked by the interaction of the guide lever 11, the cam groove 22 of the clamp member 26, and the lid spring 38 according to this movement. The opening / closing operation is performed.

(2) Operation of the toggle mechanism 27 in accordance with the storage movement and the drawer movement of the cleaning tank 2 In the state where the cleaning tank 2 is stored in the storage space of the main body 1 of the cleaning machine, as shown in FIGS. The engaging pin 36 protruding rearward from the tank 2 is fitted into the engaging notch 28 of the lever 29, and the rotational force of the lever 29 caused by the urging force of the coil spring 30 causes the cleaning movement of the cleaning tank 2. Acts on the direction A side.

  At this time, as described above, the front contact portion 17 of the cleaning tank 2 contacts the guide pin 14 and presses it toward the storage movement direction A side, so that the cam pin 37 of the inner lid 10 is connected to the cam groove 22. The inner lid 10 is in a state of sealing the upper surface opening 4 of the cleaning tank 2 as a result.

  When it is detected that the rotational speed of the pump 59 is equal to or lower than the predetermined speed and the lock is released, the cleaning tank 2 is moved to the drawing movement direction B side beyond the first drawing position. When the lever 29 is rotated in the pulling movement direction B side against the urging force of the coil spring 30 and the lever 29 exceeds the setting switching position D shown in FIG. 5 (a), FIG. 3 (a) and FIG. As shown, the turning force of the lever 29 caused by the urging force of the coil spring 30 is switched so as to act on the pulling movement direction B side. As a result, the urging force of the coil spring 30 pushes the cleaning tank 2 in the pulling movement direction B side, and then the engaging pin 36 is removed from the engaging notch 28 and the inner lid 10 is raised as described above. Since the closing of the upper surface opening 4 of the cleaning tank 2 is released, the cleaning tank 2 can be pulled out from the cleaning machine main body 1.

  When the washing tub 2 is pushed back in the storage movement direction A side from this pulled out state, the engaging pin 36 protruding from the washing tub 2 is inserted into the engaging notch 28 of the lever 29 and presses it. On the contrary, the lever 29 is rotated in the storage movement direction A side against the urging force of the coil spring 30. When the lever 29 exceeds the setting switching position D, the turning force of the lever 29 is switched so as to act on the storage movement direction A side, so that the cleaning tank 2 is moved to the storage movement direction A side by the urging force of the coil spring 30. Be drawn.

  As described above, the energizing force (rotating action direction) of the coil spring 30 against the lever 29 of the toggle mechanism 27 is moved clockwise and counterclockwise with the setting switching position D as a boundary as the cleaning tank 2 is moved in and out. Thus, the cleaning tank 2 can be moved and retracted with a small operating force.

(3) Control operation by the controller 58 when the dishwasher is operated / stopped In the present invention, when it becomes necessary to draw out the washing tank 2 during the washing operation, the washing tank 2 can be drawn out. By shortening the time to become, the operability is improved. Here, the control operation by the controller accompanying the operation / stop of the dishwasher according to this embodiment will be described including the characteristic part of the present invention.

  In the standby state before the start of the cleaning operation or after the cleaning operation, the controller 58 drives the cam drive motor 60 to rotate the cam 44 so that the hook 42 is moved to the non-locking position where it is detached from the strike pin 41 of the cleaning tank 2. Hold (state shown in FIG. 12C). That is, in the standby state, the washing tank 2 is unlocked by the lock mechanism 40, so that the washing tank 2 can be freely taken in and out, and tableware can be taken in and out freely.

  When the operation / stop switch 57 is operated and a cleaning operation is commanded, the controller 58 first determines whether or not the detection output of the cleaning tank position sensor 53 is on. If the cleaning tank position sensor 53 is on, it is considered that the cleaning tank 2 has been stored in the predetermined storage position, so the cam drive motor 60 is activated. As a result, the cam 44 is rotated and the hook 42 is moved to the locking position, so that the strike pin 41 of the cleaning tank 2 is locked by the hook 42 (the state shown in FIG. 12A). At that time, the controller 58 determines whether or not the hook position sensor 50 is turned off. If the hook position sensor 50 is turned off, it is considered that the strike pin 41 of the cleaning tank 2 is securely locked by the hook 42, so that the controller 58 activates the pump 59 for the first time at this time. Accordingly, the cleaning operation is started, and the cleaning water pressurized by the pump 59 is sprayed on the dishes 5 to perform cleaning.

  During the cleaning operation, the hook 42 securely holds the strike pin 41 by the action of the torsion spring 43, so that the state where the cleaning tank 2 is locked in the predetermined storage position is stably maintained. Therefore, even when the user carelessly pulls the cleaning tank 2 carelessly, it is possible to reliably prevent the occurrence of the problem that the cleaning tank 2 is pulled out.

  During this cleaning operation, when it is necessary to stop the cleaning and pull out the cleaning tank 2, the user tries to grip the grip 8 provided in the door 9, and the finger insertion part of the grip 8 When a finger is inserted into the lever 108 and the lever body (door lever) 112 (FIGS. 15, 16, and 17) is gripped, this is detected by the lever body gripping detection means 109 and input to the controller 58. (See FIG. 14.)

  Then, when it is input to the controller 58 that the lever body 112 is being gripped, the controller (control means) 58 sends out a stop command for stopping the operation of the pump 59 (see FIG. 14).

  The controller 58 drives the cam drive motor 60 when the rotation speed detecting means 59a detects that the rotation speed of the pump 59 has reached a speed at which the cleaning liquid does not spout outside the cleaning tank 2. Then, the cam 44 is actuated, and the hook 42 is rotated against the urging force of the torsion spring 43 and moved to the non-locking position where it is detached from the strike pin 41 (see FIG. 12 (c)). Thereby, the lock | rock with respect to the washing tank 2 by the lock mechanism 40 is cancelled | released, and the washing tank 2 can now freely take in and out.

  Further, when the predetermined cleaning time has elapsed and the cleaning operation is completed and the process shifts to the standby state, the controller 58 first stops the pump 59 accordingly, and then drives the cam drive motor 60 to move the cam 44. The hook 42 is rotated against the urging force of the torsion spring 43 and moved to the non-locking position where the hook 42 is detached from the strike pin 41. Thereby, since the lock | rock by the lock mechanism 40 is again cancelled | released, the washing tank 2 can be taken in and out freely.

  When the strike pin 41 is locked by the hook 42 and the cleaning tank 2 is locked, the hook 42 is only urged to the locking position by the torsion spring 43 and is not restricted by the cam 44. Therefore, even when the cam drive motor 60 does not operate due to a power failure or an emergency failure, the cleaning tank 2 can be unlocked by releasing the strike pin 41 by applying an external force to the hook 42. .

  Then, after the washing tank 2 is unlocked and the tableware is taken out after the washing tank 2 is unlocked, the washing tank 2 is brought to a predetermined storage position in the washing machine main body 1 even if power recovery from a power failure or failure remains unrepaired. When the strike pin 41 is moved, the strike pin 41 contacts and presses against the inclined portion 46 at the tip of the hook 42, so that the hook 42 swings to the unlocked position against the biasing force of the torsion spring 43, and the washing tank Is stored in the storage position, the strike pin 41 is again engaged with the hook 42. For this reason, the washing tank 2 can be pushed into a predetermined storage position.

  Accordingly, it is possible to avoid a situation in which the cleaning tank 2 that has been pulled out is in the way of being obstructed or left unsightly while the cleaning tank 2 is pulled out. In addition, when the cleaning tank 2 is stored, no excessive stress is generated even if the strike pin (locked portion) 41 and the hook (locking member) come into contact with each other. It is possible to reliably prevent the occurrence of failures such as breakage and deformation of 40.

<Characteristic configuration of the present invention>
In the dishwasher according to this embodiment, the door portion 9 includes an upper door portion 9a and a lower door portion 9b (see FIG. 16).
(A) a region X constituting a finger insertion unit 108 for inserting a finger when the user pulls out the cleaning tank 2 toward the front;
(B) A shaft body rotation detection unit (photosensor) 111 that is disposed adjacent to the finger insertion unit 108 and is located on one end side of a shaft body (door lever shaft) 110 described later and detects the rotation of the shaft body 110. A region Y where
(C) A region on the right side of the finger insertion unit 108 on the side opposite to the region Y where the shaft body rotation detection unit 111 is disposed, that is, a region Z where the end of the other end side of the shaft body 110 is located.
Are divided into three in the width direction of the dishwasher (FIG. 15).

  A lever body (door lever) 112 is disposed in the region X constituting the finger insertion portion 108 into which the user inserts a finger when the user pulls the cleaning tank 2 forward (FIGS. 15, 16, and 17).

The door portion 9 (upper door portion 9a) includes a shaft body (door lever shaft) 110 disposed along the lateral width direction of the door portion 9, and a shaft body 110 that is pivotally supported. The lever body (door lever) 112 disposed in the finger insertion portion 108 and the finger insertion portion 108 are spaced apart from each other in the lateral width direction of the door portion 9. And a shaft body rotation detection unit (photosensor (FIGS. 15, 17, and 18)) 111 and a light shielding plate (FIGS. 15, 17, and 18 ) 113 that detect the rotation of the shaft body 110 . ing.

  In this embodiment, the lever body 112, the shaft body 110, and the shaft body rotation detection unit 111 detect that the lever body 112 is gripped by a finger inserted into the finger insertion unit 108. Means 109 is configured.

  The relationship between the operation state of the lever body (door lever) 112 and the shaft body rotation detection unit (photosensor) 111 and the light shielding plate 113 will be described as follows.

  1) When no finger is inserted into the finger insertion unit 108 and the lever body 112 is not gripped, the light shielding plate 113 is moved by the biasing force of the return spring 120 to the shaft body rotation detection unit (photosensor) 111. The shaft body rotation detection unit (photosensor) 111 is in an OFF state (see FIG. 17B), which is located in a downward direction, which is a direction in which light from the light emitting unit 101 to the light receiving unit 102 is blocked.

  2) One end of the shaft body 110 is a bent portion bent backward, and the bent portion is urged downward by the light shielding plate 113, so that the lever body (door lever) 112 is As shown in FIG. 17 (a), it is urged clockwise. That is, the lever body (door lever) 112 is indirectly urged by the urging force of the return spring 120 to be in an upright state as shown in FIG.

  3) When the user holds and grips the upper end of the lever body (door lever) 112 in order to pull out the front door of the dishwasher (the upper end is pulled forward), the lever body ( The door lever (112) rotates forward about the shaft body 110, and the upper end of the lever body (door lever) 112 is inclined forward with respect to the shaft body 110 (FIG. 18A). reference).

  4) In this inclined state, the bent portion in which one end of the shaft body 110 is bent rearward is urged upward, and the upward urging force of the bent portion exceeds the urging force of the return spring 120, and the light shielding plate 113 rises, the light from the light emitting unit 101 of the shaft body rotation detection unit (photo sensor) 111 is received by the light receiving unit 102, the shaft body rotation detection unit (photo sensor) 111 is turned on, and the lever It is detected that the body 112 is gripped (see FIG. 18B).

  And in the dishwasher of this embodiment, the water droplet scattering which catches the water droplet which splashes from the finger insertion part 108 to the shaft body rotation detection part 111 between the finger insertion part 108 and the shaft body rotation detection part 111. A prevention unit 121 (see FIG. 15) is provided. The water droplet scattering prevention unit 121 includes an upper partition 122, a first lower partition 123, and a second lower partition 124.

  Similarly, between the finger insertion unit 108 and the region C where the other end of the shaft body 110 is located, a water droplet scattering prevention unit 121 that catches water droplets scattered from the finger insertion unit 108 to the shaft body rotation detection unit 111. The water droplet scattering prevention unit 121 includes an upper partition 122, a first lower partition 123, and a second lower partition 124. However, since the sensor which dislikes the entry of water in particular is not provided in the region Z, a configuration without the water droplet scattering prevention unit 121 may be employed.

  Further, as shown in FIG. 19A, the first lower partition 123 and the second lower partition 124 have U-shaped grooves 123a whose lower ends constitute lower bearings and whose upper ends are released. And 124b are respectively formed.

  Moreover, as shown in FIG.19 (b), the upper partition 122 is formed with the reverse U-shaped groove | channel 122a by which the upper end comprised the upper side bearing and the lower end was open | released.

The grooves (lower bearings) 123a and 124a formed in the first lower partition 123 and the second lower partition 124, and the grooves ( upper bearing) 122a formed in the upper partition 122, As shown in FIG. 19 (c), a bearing 125 having a substantially circular shape when viewed from the side is formed. As shown in FIG. 19 (d), the shaft body 110 is connected to the upper partition 122 and the first partition 122. The first and second lower partitions 123 and 124 are pivotally supported by being sandwiched from above and below.

  Moreover, in this embodiment, the washing machine main body 1 is provided with a cover body (bottom cover) 130 (FIG. 16) for receiving the falling water, and the water droplets received by the water droplet scattering prevention unit 121 It is configured to be guided from the guide portion) 140 to the cover body (bottom cover) 130.

  As shown in FIGS. 15 and 16, the guide section (first guide section) 140 is disposed on the left and right sides of the door lever 112, and the left and right guide sections (first guide section). Each of 140 includes a drain hole 141 and a drain hole 142.

  Furthermore, in the dishwasher of this embodiment, water is prevented from flowing from the region A where the finger insertion unit 108 is located to the region B where the shaft rotation detection unit 111 is located along the shaft body 110. A weir portion 133 (FIG. 15) is provided. Specifically, the dam portion 133 is constituted by a rod that goes around the outer circumference of the shaft body 110 around the axis.

In this embodiment, the drain hole 142 that guides the water received by the upper partition 122 functions as a second guide portion that guides the water that has been blocked by the dam portion 133 and dropped to the cover body 130. It is configured as follows.

  However, although not particularly illustrated, the second guide portion (water drain hole) in which the dam portion 133 is provided on the left side of the first lower partition 123 and the water blocked by the dam portion 133 is separately provided, for example. ) To the cover body 130.

The dishwasher of this embodiment is configured as described above, and scatters from the finger insertion unit 108 to the shaft body rotation detection unit 111 between the finger insertion unit 108 and the shaft body rotation detection unit 111. Since the water droplet scattering prevention unit 121 for receiving the water droplets is disposed, the water droplets are prevented from scattering from the finger insertion unit 108 to the shaft body rotation detection unit 111, and the cleaning tank 1 is cleaned from the front opening 3 thereof. When the user grips the gripping part 8 when pulling out 2, even when water enters the finger insertion part 108 from the outside of the main body of the washing machine, scattering of water to the shaft body rotation detection part 111 is suppressed. Thus, it is possible to reliably detect that the grip 8 is gripped by the user's fingers.

Moreover, since the dishwasher of this embodiment is provided with the guidance | induction part 140 which guides the water droplet received in the water droplet scattering prevention part 121 to the cover body (bottom cover) 130 as mentioned above, a water droplet scattering prevention part It is suppressed that the water droplet received in 121 flows out of the washing machine main body 1.
However, the configuration including the guiding unit 140 is an arbitrary configuration, and a configuration without the guiding unit 140 may be employed.

Furthermore, when the dishwasher according to this embodiment is configured to include the weir 133 as described above, water flows from the finger insertion unit 108 to the shaft rotation detection unit 111 through the shaft 110. Therefore, it is possible to more reliably detect that the grip portion 8 is gripped by the user's finger.
However, the configuration including the dam portion 133 is an arbitrary configuration, and a configuration not including the dam portion 133 is also possible.

  The present invention is not limited to the above embodiment in other points, and various applications and modifications can be made within the scope of the invention.

1 Main body of cleaning machine (main body casing)
DESCRIPTION OF SYMBOLS 2 Cleaning tank 3 Front opening part 4 Upper surface opening part 8 Grip part 9 Door part 9a Upper door part 9b Lower door part 10 Inner lid 40 Lock mechanism 41 Strike pin (locking part)
42 Hook (locking member)
43 Torsion spring (engagement means for locking)
44 Cam (Driving release drive means)
46 inclined part 50 hook position sensor (locking member position sensor)
53 Cleaning tank position sensor 57 Run / stop switch 58 Controller (control means)
59 Pump 59a Rotational speed detection means 60 Cam drive motor 101 Light emitting part 102 Light receiving part 108 Finger insertion part 109 Lever body gripping detection means 110 Shaft body (door lever shaft)
111 Shaft rotation detector (photo sensor)
112 Lever body (door lever)
113 Shading plate 120 Return spring 121 Water droplet scattering prevention part 122 Upper partition 122a Inverted U-shaped groove provided in the upper partition 123 First lower partition 124 Second lower partition 123a Provided in the first lower partition U-shaped groove 124a U-shaped groove provided in second lower partition 125 Substantially circular bearing 130 Cover body (bottom cover)
133 Weir part 140 Guide part (first guide part)
141 The drainage hole on the left side of the second lower partition that constitutes the guide part 142 The drainage hole on the right side of the second lower partition that constitutes the guide part

Claims (4)

A washing tank in which dishes to be washed are stored;
A pump that circulates cleaning liquid for washing dishes,
Control means;
A cleaning machine main body having a front opening through which the cleaning tank is taken in and out, and performing a cleaning operation by operating the pump according to an operation command sent from the control means to the pump;
A door that opens and closes the front opening of the cleaner body;
A finger insertion part that is disposed on the door part and into which a user inserts a finger when pulling out the cleaning tank from the front opening;
A shaft disposed along the width direction of the door,
A lever body that is pivotally supported by the shaft body and swings around the axis with rotation about the axis of the shaft body;
A shaft body rotation detection unit that is disposed apart from the finger insertion unit in the lateral width direction of the door unit and detects the rotation of the shaft body; and
The lever body, the shaft body, and the shaft body rotation detection unit constitute a lever body grip detection unit that detects that the lever body is gripped by a finger inserted into the finger insertion unit ,
Between the finger insertion unit and the shaft body rotation detection unit, a water droplet scattering prevention unit that receives water droplets scattered from the finger insertion unit to the shaft body rotation detection unit is disposed ,
The water droplet scattering prevention part is disposed so as to be located on both sides of the upper partition when viewed in the axial direction of the shaft body and the upper partition having an inverted U-shaped groove whose lower end is released. A first lower partition with a U-shaped groove with an open upper end and a second lower partition with a U-shaped groove with an upper end released;
The shaft body is sandwiched from above and below by the grooves of the upper partition and the grooves of the first and second lower partitions, and the shaft of the upper partition and the first and second lower partitions Tableware characterized in that splashing of water droplets is suppressed by the shaft body being pivotally supported by a bearing that is formed by the groove of the side partition and is substantially circular in a side view. washing machine.   The dishwasher according to claim 1, wherein the washing machine main body includes a cover body that receives falling water, and a guide section that guides water droplets received by the water droplet scattering prevention section to the cover body. Machine.   The shaft body located between the finger insertion portion and the shaft body rotation detection portion is provided with a weir portion that suppresses the flow of water along the shaft body. The dishwasher according to claim 1 or 2.   The cleaning machine main body includes a cover body that receives the falling water, and a second guiding section that guides the water that has been blocked by the dam section and dropped to the cover body. A dishwasher according to claim 3.

Images