JP4215793B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher capable of washing dishes by spraying washing water toward the dishes stored in a washing tank.

  2. Description of the Related Art Conventionally, there has been known a household dishwasher that is installed, for example, on the side of a sink on a sink and that can wash dishes by spraying washing water toward the dishes stored in the washing tank. Yes.

  This type of dishwasher has, for example, a tableware inlet for loading and unloading tableware on the front surface of the cleaning tank. This tableware slot can be covered with two doors (upper door and lower door) arranged side by side, for example. For example, the upper door can be rotated upward about a rotation axis extending in the left-right direction at the upper end, and the lower door can be rotated downward about the rotation axis extending in the left-right direction. It is possible to move.

In a conventional dishwasher having an upper door and a lower door, the vertical lengths of the upper door and the lower door are formed to be substantially the same length. In addition, there is a structure in which the upper door can be opened and closed in conjunction with each other by connecting the upper door and the lower door by, for example, an interlocking mechanism and opening and closing the lower door (see, for example, Patent Document 1).
JP 2001-275915 A

  An object of the present invention is to provide a dishwasher that can be installed in a narrow space.

The invention according to claim 1 for achieving the above object includes a washing tank (3) having a tableware inlet (30) through which a tableware (P) can be taken in and out and disposed in the cabinet (2), A dish basket (4) that is housed inside the washing tank and holds the tableware, and a plurality of nozzles (8) that are arranged below the washing tank and that spray washing water from below the dish basket toward the tableware. ) Having a nozzle arm (7), a cleaning pump (10) for feeding cleaning water to the nozzle arm, and a door for covering the lower side of the tableware inlet, and a shaft provided at the lower end thereof (54), a lower door (52) pivotable forward and downward, a door for covering the upper side of the tableware slot, and an upper door (51) pivotable upward; Connect the door and lower door at the side of the dishwasher and open and close one door An interlocking mechanism (60) for interlockingly opening and closing the other door, and an opening / closing detection mechanism (57) disposed on the side of the dishwasher to detect the open / closed state of at least one of the upper door and the lower door ), And the interlocking mechanism connects the upper door and the lower door at a position avoiding the position of the opening / closing detection mechanism, and the interlocking mechanism (60) is connected to the lower door (52). A lower link (60B) that is displaced in accordance with opening and closing, and an upper link (60A) that is rotatably connected to the lower link and transmits the displacement of the lower link to the upper door (51). The upper link and the lower link are connected behind the opening / closing detection mechanism (57), and the upper link (60A) is connected to the upper arm (61) connected to the upper door (51). The upper arm has a groove extending substantially in the front-rear direction ( 1) and the engaging portion (68) that is displaceable along the direction in which the groove extends, so that it can be displaced back and forth, and in conjunction with the opening of the lower door (52). The dishwasher is characterized in that the upper arm is displaced forward and the upper door is pushed forward .

  For example, the dishwasher is partitioned by a cabinet whose outer shape is substantially rectangular. A certain space is formed between the cabinet and the cleaning tank, and the opening / closing detection mechanism and the interlocking mechanism are disposed in the space, for example.

  In this case, if the interlock mechanism is configured to connect the upper door and the lower door at a position where the position of the open / close detection mechanism is avoided in the front-rear direction (depth direction), the position avoided in the left-right direction (width direction) Compared with the structure which connects by, the space between a washing tank and a cabinet can be narrowed in the width direction, and the width | variety of the whole dishwasher can be narrowed.

Further, by opening the lower door, the upper door can be pushed forward by the upper arm, and the upper door can be rotated forward. In this case, if the position (action point) at which the displacement of the upper arm is transmitted to the upper door is set near the axis of the upper door, the amount of rotation of the upper door can be increased relative to the amount of displacement of the upper arm.

According to a second aspect of the present invention , when the lower door (52) is further opened after the upper door (51) is pushed out by the upper arm (61) until the upper door (51) becomes substantially horizontal, the upper arm is engaged with the engagement. 2. The dishwasher according to claim 1, wherein the dish is rotated about a portion (68), and the upper door is further opened upward.

If the upper door is pushed out to the near side with the upper arm by opening the lower door as in claim 2 , the upper door pivots further when pushed out until it is almost horizontal. Can not be made.

According to this configuration, after the upper door is pushed out until it is substantially horizontal, the upper arm rotates about the engaging portion, and the upper door is further opened upward. As a result, the opening angle (for example, about 146 °) in the most opened state of the upper door can be increased with respect to the opening angle (for example, about 90 °) in the most opened state of the lower door. It is easy to put in and out tableware from the upper side of the front side through the tableware slot.

The invention according to claim 3 is characterized in that the upper door (51) remains closed until the lower door (52) is opened by a predetermined angle (for example, about 4 °). Machine.

  According to this configuration, the upper door remains closed until the lower door is opened by the predetermined angle. Compared to the configuration in which the upper door starts to open almost simultaneously with the lower door. Thus, it is possible to further suppress the feeling of pressure felt by the user when the upper door is opened.

In addition, when the upper door is opened, the lower door is opened further forward than the upper door, so that water droplets spilling from the inner surface of the upper door can be received by the inner surface of the lower door, and water droplets spill out of the machine. There is nothing.

  The upper link (60A) and the lower link (60B) are connected to each other with a certain play, and the lower door is rotated until the lower door (52) is opened by the predetermined angle. The displacement of the lower link accompanying the above may not be transmitted to the upper link, and the upper door (51) may remain closed.

  According to the configuration of the present invention, since the interlocking mechanism connects the upper door and the lower door at a position avoiding the arrangement position of the opening / closing detection mechanism, the space between the cleaning tank and the cabinet is efficiently used. The space can be narrowed. Thereby, since the dimension of the whole dishwasher can be made small, even when the installation space of a sink is narrow, the said dishwasher can be installed.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a front view showing an external configuration of a dishwasher 1 according to an embodiment of the present invention. FIG. 2 is a side view of the dishwasher 1.

  With reference to FIG. 1 and FIG. 2, the dishwasher 1 is partitioned by a cabinet 2 whose outer shape is substantially rectangular. The cabinet 2 has a width of about 500 mm, a depth of about 280 mm, and a height of about 490 mm, for example.

  Inside the cabinet 2 is disposed a cleaning tank 3 for storing tableware to be cleaned (see FIG. 2). On the front surface of the washing tank 3, a tableware inlet 30 for taking in and out tableware in the washing tank 3 is formed. The tableware inlet 30 faces slightly upward with respect to the vertical direction, so that the tableware can be easily put in and out of the washing tank 3 through the tableware inlet 30 from the upper front side of the dishwasher 1.

  The tableware slot 30 can be covered with two doors (an upper door 51 and a lower door 52) that are rotatably attached to the cabinet 2. The vertical lengths of the doors 51 and 52 are, for example, about 120 mm for the upper door 51 and about 225 mm for the lower door 52. That is, the ratio between the length of the upper door 51 in the vertical direction and the length of the lower door 52 in the vertical direction is about 3.5: 6.5. Thereby, the upper door 51 has an auxiliary dimension with respect to the lower door 52, and the upper door 51 has a size larger than the lower door 52 that covers most of the tableware inlet 30. The part which cannot be covered with the lower door 52 can be covered auxiliary.

  The upper door 51 is pivotable forward and upward with a pivot shaft 53 extending in the left-right direction at the upper end thereof. On the other hand, the lower door 52 is pivotable forward and downward with a pivot shaft 54 extending in the left-right direction at the lower end thereof. In a state where the upper door 51 and the lower door 52 are closed, the front side of the tableware inlet 30 is covered, and the cleaning tank 3 is closed in a watertight manner.

  At the upper end portion of the lower door 52, a grip portion 55 is disposed at the center in the left-right direction for the user to grip when the lower door 52 is opened. In the present embodiment, a lock mechanism (not shown) is provided for restricting (locking) the lower door 52 so that it does not open from the closed state, and below the grip portion 55 (substantially the center of the lower door 52). Is provided with an unlock button 56 for unlocking the lower door 52. With this configuration, when opening the lower door 52, the user presses the lock release button 56 to release the lock of the lower door 52, and then grasps the grip portion 55 and pulls the lower door 52 downward. Can be rotated. In addition, the structure of the holding | grip part 55 and the lock release button 56 is not restricted to the said structure, For example, the lock release button is integrated in the vicinity of the holding part or the holding part itself, and pushes the release button while holding the holding part. Thus, the lower door may be easily opened with a small number of operations.

  A power button 21 for switching on / off the power of the dishwasher 1 and an operation panel 22 for starting operation of the dishwasher 1 and setting a washing course and the like are provided at the lower front of the cabinet 2. And are arranged. With the tableware stored in the washing tank 3, the operation panel 22 is operated to start the operation of the dishwasher 1, whereby washing water is jetted in the washing tank 3 and the tableware is washed. ing. The dishwasher 1 also has a drying function, for example, and the washed dishes are dried by warm air.

  FIG. 3 is a side sectional view showing the internal configuration of the dishwasher 1. FIG. 4 is a front view of the dishwasher 1 and is shown with a part cut away.

  Referring to FIGS. 3 and 4, a table basket 4 for holding tableware P (for example, a plate) to be cleaned is arranged in the cleaning tank 3. A plurality of rollers 41 are attached to the bottom of the tableware basket 4, and the tableware basket 4 is on the lower door 52 opened to the near side through the tableware insertion port 30 with the upper and lower doors 51 and 52 opened. (See FIG. 11).

  In the lower part of the washing tank 3, for example, two nozzle arms 7 for injecting washing water from below the tableware basket 4 toward the tableware P are arranged side by side. The two nozzle arms 7 are held by a common nozzle base 12 so as to be rotatable about the center line C, and the cleaning water sent through the nozzle base 12 is supplied to each nozzle arm. 7 is ejected upward from a plurality of nozzles 8 provided in the nozzle 7. However, the spray of the cleaning water in the cleaning tank 3 is not limited to the two nozzle arms 7, but may be, for example, one nozzle arm or three or more nozzle arms. Also good. For example, the structure which can inject washing water toward the tableware P from the fixed nozzle attached along the inner surface of the washing tank 3 may be sufficient. Furthermore, the structure which can provide a nozzle not only in the lower part of the washing tank 3 but also in the upper part and can inject washing water toward the tableware P from both upper and lower sides may be sufficient.

  On the front side of the bottom surface 32 of the cleaning tank 3, a water reservoir 33 for storing cleaning water is formed one step lower. For example, tap water can be introduced into the cleaning tank 3 from a water supply facility outside the machine, and the tap water introduced into the cleaning tank 3 is stored in the cleaning tank 3 including the water reservoir 33. It collects at the bottom. The washing water used for washing the dishes is generated, for example, by putting a detergent into the washing tank 3 and mixing the detergent with tap water introduced into the washing tank 3. However, the present invention is not limited to the configuration in which the cleaning water is generated by the introduction of the detergent. For example, the tap water introduced into the cleaning tank 3 can be subjected to a predetermined treatment, and the water can have the cleaning performance without mixing the detergent. Such a configuration may be adopted.

  The water reservoir 33 is connected to the cleaning pump 10 via the suction pipe 9. The discharge port of the cleaning pump 10 is connected to the nozzle base 12 via the discharge pipe 11. The cleaning pump 10 is driven by a motor 13. When the motor 13 rotates in a predetermined direction, the cleaning water in the water reservoir 33 is sucked into the cleaning pump 10 and sent out toward the nozzle base 12. It is.

  The cleaning water sent to the nozzle base 12 gives a reaction force to the nozzle arm 7 when being ejected from the plurality of nozzles 8 through the nozzle arms 7. Due to this reaction force, each nozzle arm 7 rotates around the center line C while ejecting cleaning water from the nozzle 8. Thereby, washing water can be sprayed evenly on the tableware P accommodated in the tableware basket 4 above the nozzle arm 7 to perform good cleaning.

  The cleaning water sprayed from the nozzle arm 7 is again collected in the lower part of the cleaning tank 3 and is sucked from the water reservoir 33 by the cleaning pump 10. In this way, the wash water stored in the water reservoir 33 is circulated in the dishwasher 1 and used for cleaning the tableware P.

  The residue adhering to the tableware P is separated from the tableware P by the washing water sprayed from the plurality of nozzles 8. The residue filter 6 is detachably disposed above the water reservoir 33 so that the residue separated from the tableware P is received by the residue filter 6 and is prevented from flowing into the water reservoir 33. It has become.

  A drainage pipe 15 for draining the washing water stored in the washing tank 3 is connected to the water reservoir 33, and a drainage pump 14 driven by a motor 13 is disposed in the middle of the drainage pipe 15. Is provided. At the time of drainage, the motor 13 rotates in the direction opposite to the predetermined direction, so that the washing water in the washing tank 3 is sucked into the drainage pump 14 from the water reservoir 33 through the drainage pipe 15 and discharged outside the apparatus. It has become so.

  5-10 is sectional drawing which showed the mode at the time of opening the upper door 51 and the lower door 52 in steps.

  In the dishwasher 1 according to the present embodiment, the upper door 51 is also opened and closed in conjunction with the opening and closing of the lower door 52. For this purpose, for example, on both the left and right sides of the cleaning tank 3, an interlocking mechanism 60 for interlocking the upper door 51 and the lower door 52 is disposed in a space between the cabinet 2. Each interlocking mechanism 60 includes, for example, an upper link 60A whose front end is connected to the upper door 51 and extends rearward, and a lower link 60B whose front end is connected to the lower door 52 and extends rearward, and these upper and lower links. 60A and 60B are the back sides of the right and left sides of the cleaning tank 3, and the rear end portions thereof are connected to each other so as to be rotatable.

  More specifically, the upper link 60A has a front arm 61 whose front end is connected to the upper door 51 so as to be pivotable below the rotation shaft 53 and extends rearward, and a front end of the front link 61A. 61 includes a rear arm 62 rotatably connected to a rear end portion of 61 and extending obliquely downward on the rear side. The lower link 60B has a front end fixed to the lower end of the lower door 52 and extending rearward, and a front end connected to the rear end of the front arm 63 so as to be rotatable. And a rear arm 64 extending obliquely upward. The rear arm 62 of the upper link 60 </ b> A and the rear arm 64 of the lower link 60 </ b> B are formed, for example, in a longitudinal hole 65 formed in the rear end portion of the rear arm 64 and in the rear end portion of the rear arm 62. The sliding shafts 66 are slidably engaged with each other so that they are connected with a certain play. However, the configuration of the interlocking mechanism 60 is not limited to the above configuration, and may be a configuration that further includes an arm between the front arm 61 and the rear arm 62, for example.

  In the space between the cabinet 2 on both the left and right sides of the cleaning tank 3, not only the interlocking mechanism 60 but also a lock detection switch 57 for detecting whether or not the lower door 52 is locked is disposed. The lock detection switch 57 is disposed on the front side of the right and left sides of the cleaning tank 3 and includes an actuator 571 that protrudes forward.

  The lower door 52 includes a contact portion (not shown) that contacts the actuator 571 when the lower door 52 is locked. By closing the lower door 52, the contact portion contacts the actuator 571. In contact therewith, the actuator 571 is pushed downward. With the downward displacement of the actuator 571, the lock detection switch 57 is turned on, and it is detected by the control unit (not shown) that has received the signal that the lower door 52 is locked.

  A holding plate 70 for holding the interlocking mechanism 60 is fixed to both the left and right sides of the cleaning tank 3. The holding plate 70 forms a fixed space with the cleaning tank 3, and in this space, in addition to the lock detection switch 57, wiring for electrically connecting the lock detection switch 57 and the control unit. Etc. are housed.

  The upper link 60 </ b> A passes through the space between the holding plate 70 and the cleaning tank 3, and then the arm 62 is rotatably attached to a rotating shaft 67 fixed to the upper rear side of the holding plate 70. Yes. Thus, the upper link 60A operates with the rotation shaft 67 as a fulcrum.

  Further, an engagement hole 71 extending in the front-rear direction is formed on the upper front side of the holding plate 70, and a roller 68 attached to the front arm 61 of the upper link 60 </ b> A is engaged with the engagement hole 71. . One end of a tension spring 72 is attached to the rear upper end portion of the holding plate 70, and the other end of the tension spring 72 is attached to the rear end portion of the rear arm 64 of the lower link 60B.

  Hereinafter, with reference to FIGS. 5-10, the operation | movement aspect of the interlocking mechanism 60 at the time of opening the lower door 52 is demonstrated. When opening the lower door 52, first, the lock of the lower door 52 is released by pressing the lock release button 56 from the state where the lower door 52 is completely closed as shown in FIG. When the lower door 52 is closed, the rear arm 64 of the lower link 60B is urged upward by the tension of the tension spring 72, and the rear arm 64 is lifted upward by releasing the lock of the lower door 52. The front arm 63 of the lower link 60B rotates counterclockwise about the rotation shaft 54. Thereby, it can be set as the structure which the lower door 52 rotates to the near side automatically, when the lock release button 56 is pushed and the lock | rock of the lower door 52 is cancelled | released. In particular, by attaching one end of the tension spring 72 to the holding plate 70 fixed to the main body of the dishwasher 1, the biasing force of the tension spring 72 is caused by the interlocking mechanism 60 ( It can be prevented that the rear arm 64) does not work well.

  At this time, as shown in FIG. 6, until the lower door 52 is opened by about 4 °, the sliding shaft 66 of the rear arm 62 of the upper link 60A is moved to the lower link 60B along with the upward displacement of the rear arm 64. By sliding along the long hole 65 of the rear arm 64, the displacement of the lower link 60B is not transmitted to the upper link 60A. Therefore, until the lower door 52 is opened by about 4 °, the upper door 51 is not interlocked with the displacement of the lower door 52, and the upper door 51 remains closed.

  From the state shown in FIG. 6, when the lower door 52 is further rotated downward by grasping the grip portion 55, the front arm 63 of the lower link 60 </ b> B is centered on the rotation shaft 54 as shown in FIGS. 7 and 8. It rotates counterclockwise and the rear arm 64 is lifted further upward. As a result, the rear arm 62 of the upper link 60A rotates counterclockwise about the rotation shaft 67, and the front arm 61 is pushed out to the front side. The front arm 61 is displaced to the near side substantially along the front-rear direction by the action of the roller 68 that rolls along the engagement hole 71, and the upper door 51 connected to the front arm 61 moves upward about the rotation shaft 53. Is rotated. 7 shows a state in which the lower door 52 is opened by about 40 °, and FIG. 8 shows a state in which the lower door 52 is opened by about 50 °. If the position (action point) at which the displacement of the front arm 61 of the upper link 60 </ b> A is transmitted to the upper door 51, i.e., the connecting portion between the upper door 51 and the front arm 61 is in the vicinity of the rotation shaft 53 of the upper door 51. The amount of rotation of the upper door 51 can be increased with respect to the amount of displacement of the front arm 61.

  As described above, when the lower door 52 is opened, the upper door 51 is pushed out by the front arm 61 of the upper link 60A so that the upper door 51 is pushed out until it is almost horizontal as shown in FIG. If this occurs, the upper door 51 cannot be rotated further upward. Therefore, in the present embodiment, when the lower door 52 is further rotated downward from the state shown in FIG. 8, the rear arm 62 of the upper arm 60 </ b> A that rotates counterclockwise along with the lower door 52 is rotated. Is pushed downward, and the front arm 61 rotates clockwise around the roller 68. Thereby, as shown in FIGS. 9 and 10, the upper door 51 can be further rotated upward. 9 shows a state in which the lower door 52 is opened by about 80 °, and FIG. 10 shows a state in which the lower door 52 is opened by about 90 °.

  In the present embodiment, the interlock mechanism 60 is configured as described above, so that the upper door 51 is opened in the most opened state with respect to the opening angle (for example, about 90 °) in the most opened state of the lower door 52. Since the angle (for example, about 146 °) can be increased, it is easy to put in and out the dishes from the upper side of the front side of the dishwasher 1 through the tableware inlet 30.

  In the present embodiment, as shown in FIG. 10, the upper door 51 is not opened to the rear side in the vertical direction. That is, the upper door 51 is not opened until it is folded back to the cabinet 2 side. Thus, even when kitchen utensils are placed on the upper surface of the cabinet 2, there is no obstacle to opening and closing the upper door 51.

  When closing the lower door 52, the interlocking mechanism 60 operates in a manner opposite to the above-described manner by rotating the lower door 52 upward, and the upper door 51 is moved downward in conjunction with the lower door 52. Is rotated. And the upper door 51 is also closed completely in the state which closed the lower door 52 completely.

  In the present embodiment, as shown in FIG. 10, in a state where the lower door 52 is most opened, the connecting portion of the front and rear arms 63 and 64 of the lower link 60B is a connecting portion between the upper link 60A and the lower link 60B. It is positioned below a straight line L connecting the shaft 66 and the rotation shaft 54 of the lower door 52. If the connecting part of the front and rear arms 63 and 64 is positioned above the straight line L, when the upper door 51 is rotated in the closing direction (counterclockwise), the front arm 63 is rotated clockwise accordingly. Accordingly, the upper door 51 and the interlocking mechanism 60 may be damaged because the lower door 52 does not rotate in the closing direction (clockwise). As described above, the configuration in which the connecting portion of the front and rear arms 63 and 64 is positioned below the straight line L allows the upper door 51 to be closed in the direction of closing from the state shown in FIG. Accordingly, the front arm 63 can be rotated clockwise to rotate the lower door 52 in the closing direction. Therefore, it is possible to prevent the upper door 51 and the interlocking mechanism 60 from being damaged.

  FIG. 11 is a side view showing a state in which the tableware basket 4 is pulled out from the cleaning tank 3.

  Referring to FIG. 11, rollers 41 provided in tableware basket 4 roll along rail 34 extending in the front-rear direction formed in cleaning tank 3 by displacing tableware basket 4 in the front-rear direction. It has become. In a state where the upper and lower doors 51 and 52 are opened, the back surface 521 of the lower door 52 is flush with the rail 34, and the back surface 521 of the lower door 52 serves as a rail. That is, when the tableware basket 4 is pulled out from the cleaning tank 3, the roller 41 of the tableware basket 4 rolls on the rail 34 and the back surface 521 of the lower door 52, and the front roller 41 is the tip of the back surface 521 of the lower door 52. The tableware basket 4 can be pulled out until it abuts against a stopper (not shown) formed on the table.

  As shown in FIG. 11, in the state where the tableware basket 4 is pulled out to the nearest side, the front end position of the upper door 51 is more forward than the center position in the front-rear direction of the tableware basket 4 (center between the front and rear rollers 41). It does not protrude. According to this configuration, in the state where the tableware basket 4 is pulled out to the most front side, more than half of the front side of the tableware basket 4 is positioned in front of the tip of the upper door 51. Easy to put in and out of the table. In the present embodiment, even when the tableware basket 4 is pulled out to the foremost side with the tableware stored in the tableware basket 4, the center of gravity of the tableware basket 4 is located on the rear side, and the tableware basket 4 is lowered by the gravity of the tableware basket 4. The force applied to the door 52 does not cause the dishwasher 1 to fall forward. However, the configuration is not limited to the above-described configuration, and even if the tip position of the upper door 51 is located at substantially the same position as the center position of the tableware basket 4 in the front-rear direction, it is sufficient with respect to the rear side of the tableware basket 4. Easy to put in and out dishes.

  FIG. 12 is a schematic diagram illustrating an example of an installation state of the dishwasher 1. As shown in FIG. 12, the dishwasher 1 is usually installed on the side of the sink 81 of the sink 80 so that the front surface thereof faces the sink 81 side.

  In the dishwasher 1 according to the present embodiment, the door that covers the front of the washing tank 3 is composed of two upper and lower doors 51 and 52, so that the forward protrusion amount is small when the lower door 52 is opened. can do. Therefore, when the lower door 52 is opened, the lower door 52 collides with the water tap 82 provided in the sink 80 as compared with the dishwasher in which the door covering the front of the washing tank 3 is constituted by one door. Hateful.

  In particular, since the vertical length of the upper door 51 is an auxiliary dimension with respect to the vertical length of the lower door 52, the upper door 51 is opened in conjunction with opening the lower door 52. Therefore, the feeling of pressure felt by the user can be suppressed.

  Moreover, since the vertical length of the upper door 51 is an auxiliary dimension with respect to the vertical length of the lower door 52, the height to the tip of the upper door 51 in the opened state is reduced. For example, even when the height of the installation space is relatively low, such as when the shelf 83 is installed above the sink 80, the dishwasher 1 can be installed.

  Furthermore, in the present embodiment, as described in FIG. 6, the upper door 51 remains closed until the lower door 52 is opened by a predetermined angle (for example, about 4 °). Compared with a configuration in which the upper door 51 starts to open almost simultaneously with starting to open, the feeling of pressure felt by the user by opening the upper door 51 can be further suppressed. Also, according to this configuration, when the upper door 51 is opened, the lower door 52 is opened to the front of the upper door 51, so that water droplets spilling from the inner surface of the upper door 51 are received by the inner surface of the lower door 52. And no water drops spill out of the plane.

  Furthermore, in the present embodiment, as shown in FIGS. 5 to 10, the interlock mechanism 60 is disposed at the lock detection sensor 57 and the wiring (open / close detection mechanism) for connecting the lock detection sensor 57 and the control unit. Since the upper door 51 and the lower door 52 are connected to each other at a position avoided on the rear side, the interlocking mechanism is compared with the configuration avoiding the opening / closing detection mechanism in the left-right direction (width direction). Thus, the space between the washing tank 3 and the cabinet 2 can be narrowed in the width direction, and the width of the entire dishwasher can be narrowed. Therefore, even when the sink 80 has a short depth and a small installation space, the dishwasher 1 can be installed.

  The lower door 52 may be configured to automatically rotate to the most opened state (for example, about 90 °) simply by pressing the lock release button 56 by increasing the tension of the tension spring 72, for example. In this case, it is preferable that a damper for imparting resistance to the rotation operation of the upper door 51 is attached.

  FIG. 13 is a cross-sectional view illustrating an example of a damper.

  FIG. 13 shows a configuration in which an oil damper 90 is attached to the rotation shaft 53 of the upper door 51. The oil damper 90 includes, for example, a rotating body 91 that covers the rotating shaft 53 and a cylindrical member 92 that houses the rotating body 91 and is fixed to the upper door 51. The rotating shaft 53 is fixed to, for example, the dishwasher body, and the cylindrical member 92 is rotated with respect to the fixed rotating shaft 53 as the upper door 51 is opened and closed.

  A fitting hole 911 having substantially the same shape as the cross section of the rotating shaft 53 is formed in the rotating body 91, and the rotating shaft 53 is fitted into the fitting hole 911. For example, one flat surface 531 is formed on the outer peripheral surface of the rotating shaft 53, and the rotating body 91 covered on the rotating shaft 53 cannot be rotated with respect to the rotating shaft 53.

  For example, a pair of flat surfaces 912 are formed on the outer peripheral surface of the rotating body 91. Thereby, when the rotating body 91 is accommodated in the cylindrical member 92, an oil sump for accommodating the working fluid between the pair of flat surfaces 912 of the rotating body 91 and the inner peripheral surface of the cylindrical member 92, respectively. 93 is formed. A working fluid such as grease is injected into the oil sump 93.

  With the configuration as described above, when the upper door 51 is rotated, the cylindrical member 92 rotates relative to the rotating body 91, and resistance is provided to the rotation of the cylindrical member 92 due to the viscosity of the working fluid. It has become so. The resistance given to the rotation of the cylinder member 92 increases as the rotation speed of the cylinder member 92 increases, that is, as the rotation speed of the upper door 51 increases.

  In this manner, by attaching the oil damper 60 to the rotation shaft 53, it is possible to prevent the upper door 51 from rotating suddenly with the opening and closing of the lower door 52. In particular, by attaching the oil damper 60 to the rotation shaft 53, the space for installing the damper can be reduced. However, the oil damper 60 is not limited to the configuration attached to the rotation shaft 53 of the upper door 51, and may be configured to be attached to the rotation shaft 54 of the lower door 52.

  The configuration in which the lower door 52 automatically rotates is not limited to the one that can be achieved by increasing the tension of the tension spring 72 as described above. For example, by adjusting the weight of the lower door 52. When the lower door 52 is opened halfway, the lower door 52 is automatically rotated downward by its own weight, and the upper door 51 is automatically rotated accordingly. . In this case, for example, if the weight is built in the upper end portion of the lower door 52, the lower door 52 can be favorably rotated downward.

  The present invention is not limited to the contents of the above embodiments, and various modifications can be made within the scope of the claims.

  For example, the ratio of the length of the upper door 51 in the vertical direction to the length of the lower door 52 in the vertical direction is not limited to about 3.5: 6.5. When the upper door 51 is opened, the feeling of pressure felt by the user can be sufficiently suppressed.

  Moreover, the structure of the interlocking mechanism 60 demonstrated in FIGS. 5-10 is not restricted to the dishwasher 1 with which the upper door 51 becomes an auxiliary dimension with respect to the lower door 52 like this embodiment, for example, upper The present invention can also be applied to a dishwasher in which the vertical lengths of the door and the lower door are substantially the same.

It is a front view which shows the external appearance structure of the dishwasher which concerns on one Embodiment of this invention. It is a side view of this dishwasher. It is side surface sectional drawing which shows the internal structure of a dishwasher. It is the front view of a dishwasher, Comprising: A part is notched and shown. It is sectional drawing which shows the state which closed the lower door completely. It is sectional drawing which shows the state which opened the lower door about 4 degrees. It is sectional drawing which shows the state which opened the lower door about 40 degrees. It is sectional drawing which shows the state which opened the lower door about 50 degrees. It is sectional drawing which shows the state which opened the lower door about 80 degrees. It is sectional drawing which shows the state which opened the lower door completely. It is a side view which shows the state which pulled out the tableware basket from the inside of a washing tank. It is the schematic which shows an example of the installation state of a dishwasher. It is sectional drawing which shows an example of a damper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dishwasher 3 Washing tank 4 Tableware basket 30 Tableware slot 51 Upper door 52 Lower door 53 Rotating shaft 54 Rotating shaft 57 Lock detection switch 60 Interlocking mechanism 60A Upper link 60B Lower link 61 Front arm 63 Front arm 64 Rear arm 66 Slide shaft 68 Roller 70 Holding plate 71 Engagement hole 72 Tension spring 90 Oil damper P Tableware L Straight line

Claims (3)

There is a tableware insertion port through which the tableware can be taken in and out, a washing tank disposed in the cabinet, a tableware container that is housed in the washing tank and holds the tableware, and is disposed at the bottom of the washing tank, A nozzle arm having a plurality of nozzles for spraying cleaning water from below the tableware basket toward the tableware, a cleaning pump for supplying cleaning water to the nozzle arm, and a door for covering the lower side of the tableware inlet A lower door that is pivotable forward and downward about an axis provided at the lower end thereof, a door for covering the upper side of the tableware slot, and an upper door that is pivotable upward; An interlock mechanism for connecting the upper door and the lower door at the side of the dishwasher and opening and closing the other door in conjunction with opening and closing of the one door, and opening and closing of at least one of the upper and lower doors Dishwasher above to detect the condition Comprising opening and closing detection mechanism disposed laterally, and the interlocking mechanism, together with those for connecting the above on the door and the lower door at a position avoiding the position of the opening and closing detecting mechanism, the interlocking mechanism A lower link that is displaced in accordance with the opening and closing of the lower door, and an upper link that is rotatably connected to the lower link and transmits the displacement of the lower link to the upper door. The upper link and the lower link are connected at the rear of the open / close detection mechanism, the upper link has an upper arm connected to the upper door, and the upper arm has a groove extending substantially in the front-rear direction, By engaging with an engaging portion that can be displaced along the extending direction of the groove, it is possible to displace back and forth, and in conjunction with the opening of the lower door, the upper arm is displaced forward, and characterized in that the upper door is adapted to be pushed out to the front side Dishwasher that.   After the upper door is pushed out by the upper arm until the upper door becomes almost horizontal, when the lower door is further opened, the upper arm rotates about the engaging portion, and the upper door is further opened upward. The dishwasher according to claim 1, wherein the dishwasher is configured as described above.   There is a tableware insertion port through which the tableware can be taken in and out, a washing tank disposed in the cabinet, a tableware container that is housed in the washing tank and holds the tableware, and is disposed at the bottom of the washing tank, A nozzle arm having a plurality of nozzles for spraying cleaning water from below the tableware basket toward the tableware, a cleaning pump for supplying cleaning water to the nozzle arm, and a door for covering the lower side of the tableware inlet A lower door that is pivotable forward and downward about an axis provided at the lower end thereof, a door for covering the upper side of the tableware slot, and an upper door that is pivotable upward; An interlock mechanism for connecting the upper door and the lower door at the side of the dishwasher and opening and closing the other door in conjunction with opening and closing of the one door, and opening and closing of at least one of the upper and lower doors Dishwasher above to detect the condition An open / close detection mechanism disposed on the side, wherein the interlocking mechanism connects the upper door and the lower door at a position avoiding the arrangement position of the open / close detection mechanism, and the lower door The dishwasher is characterized in that the upper door remains closed until it is opened by a predetermined angle.

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