JP4273505B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher, and more particularly, to an interlocking opening / closing mechanism that interlocks and opens and closes a plurality of door bodies, and a seal structure between a door body and a cleaning tank.

The dishwasher (or dishwasher / dryer) puts dirty dishes in the dish basket, sets them in the washing tub of the dishwasher body, and sprays the wash water from the nozzle to remove the dirty dishes. It is to be washed. Therefore, during cleaning, the opening of the cleaning tank is tightly closed by the door body, and a seal member is mounted between the cleaning tank and the door body so that there is no leakage of cleaning water.
In the case of a table-type dishwasher, it is generally composed of a plurality of doors, and when the doors are closed, the doors are also sealed. In addition, an interlocking mechanism that opens and closes a plurality of door bodies by interlocking with one operation (generally opening and closing operations of the lower door) is employed (see, for example, Patent Documents 1, 2, and 3).

  In Patent Document 1, as a door body interlocking mechanism, the support arm of the upper door and the support arm of the lower door are connected by an interlocking link, and the interlocking link supports the upper door by opening the lower door. The arm is rotated upward about the fulcrum of the arm. Therefore, the track of the opening and closing operation of the upper door is an arc track that rotates around the fulcrum of the support arm of the upper door. Therefore, the upper door moves obliquely upward with respect to the opening surface of the cleaning tank, and has a configuration that hardly moves in the vertical direction. In particular, since the upper side portion of the upper door has a short distance (rotation radius) from the fulcrum of the upper door support arm, the sealing property (water tightness) at the upper side portion becomes a problem.

  The interlocking mechanism of the door body shown in Patent Document 2 supports the upper door rotatably with two long and short links, that is, the upper portion of the side surface of the upper door with a short link and the lower portion of the side surface with a long link. It is a structure that pivots and connects the other end of the interlocking link that pivots one end to the support arm of the lower door to the longer link (in order to delay the opening of the upper door from the lower door, There is a play by a shaft and a long hole at the connecting part between the link for interlocking and the longer link). Therefore, in this interlocking mechanism, the upper door is opened and closed by an elliptical orbit by two long and short links, and the upper side of the upper door is regulated by a short link. There is a similar problem.

  In Patent Document 3, the opening / closing mechanism of the upper door is configured by a cam follower (or convex portion) provided on the support arm of the upper door and a cam groove with which the cam follower is engaged. The wire is routed around the support arm of the lower door and the support arm of the upper door. The cam groove with which the cam follower is engaged is provided substantially parallel to the opening surface of the cleaning tank from the middle part to the upper part of the side surface of the cleaning tank. Therefore, there is a problem similar to that of Patent Document 1 regarding the sealing performance of the upper side portion.

Japanese Unexamined Patent Publication No. 2003-174992 (3rd, 4th page, FIG. 1 and FIG. 2) Japanese Patent Laid-Open No. 2002-219083 (4th and 5th pages, FIGS. 1 to 4) Japanese Unexamined Patent Publication No. 2003-180595 (page 3-6, FIGS. 1 and 2)

  As described above, the conventional dishwasher has a very small moving distance in the vertical direction with respect to the cleaning tank opening surface of the upper door. For this reason, it is difficult to ensure a sufficient sealing performance between the upper door and the washing tub especially at the upper side, and there is often a problem that water oozes out from the top plate of the dishwasher body.

  The present invention has been made in order to solve the above-described problems, and can increase the movement distance of the upper door in the vertical direction with respect to the opening surface of the cleaning tank, and can improve the sealing performance between the upper door and the cleaning tank. The object is to obtain a dishwasher that can be improved.

A dishwasher according to the present invention includes a washing tank having an opening, a plurality of door bodies for opening and closing the opening of the washing tank, and opening and closing the other door body in conjunction with an opening and closing operation of one door body. A link mechanism comprising a interlocking means, and a seal portion composed of a convex part and a concave part fitted to each other between the other door body and the cleaning tank, wherein the interlocking means connects a plurality of link members. And a first moving component that moves in a direction in which the projecting portion and the recessed portion of the seal portion separate from each other when the other door body that is interlocked by the interlocking means is opened. A second moving component that moves in a direction substantially parallel to the opening surface of the cleaning tank, and the interlocking means includes a first link that is rotatably connected to the one door body, and the first link. And a second link rotatably connected to the cleaning tank, and the other Biasing means for biasing the door body in the closing direction, it is rotatably pivotally attached to the cleaning tank, and a third link connected via the biasing means to the support arm of the other door body A load portion that is provided on the second link and abuts against the third link, and rotatably supports a support arm of the other door body to the second link, and The second link is connected such that the angle formed with the second link is larger when the door is opened than when the door is closed.

  According to the present invention, the interlocking opening / closing mechanism includes interlocking means for moving the other door body that opens / closes in conjunction with the opening / closing operation of one door body in a direction substantially perpendicular to the opening surface of the cleaning tank. Therefore, since it becomes possible to form a seal part composed of a convex part and a concave part between the other door body and the cleaning tank in a labyrinth shape, especially the seal at the upper side part between the upper door and the cleaning tank There is an effect that the performance can be greatly improved.

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

Embodiment 1 FIG.
1 is an external perspective view of a dishwasher in a closed state of the dishwasher according to Embodiment 1 of the present invention, FIG. 2 is an external perspective view of the door opened, and FIG. 3 is a right side view of the dishwasher.

1 to 3, a main body (a dishwasher main body) 1 of the dishwasher has a cleaning tank 2 for cleaning dishes. Tableware is stored in a tableware basket (not shown), and the tableware basket is taken in and out through an opening 3 that opens to the front side of the washing tub 2.
The opening 3 of the cleaning tank 2 is closed and opened by a plurality of door bodies, that is, the upper door 4 and the lower door 5 in this example. By dividing the door body into a plurality of pieces in this way, the range of the opening / closing operation of each door body can be reduced, so that the dishwasher can be installed even in a narrow space.

  The opening 3 of the cleaning tank 2 is generally formed in a square shape when viewed from the front, and the opening surface is formed in a smooth curved surface with the upper portion of the opening surface slightly inclined rearward when viewed from the side. As will be described later, a seal member made of rubber is attached to each side around the opening 3, and a seal member is also attached to a joint portion of the upper door 4 and the lower door 5, so that watertightness when the door is closed is provided. It is kept.

The upper door 4 (the other door body) is formed to be slightly smaller in length in the vertical direction than the lower door 5 (the one door body), and is rotated upward and opened by interlocking means described later. . The opening / closing track of the upper door 4 will be described in detail later. The lower door 5 is opened by rotating approximately 90 ° to the front side of the front.
The lower door 5 is provided with door lock release buttons 6 for releasing the door lock, and the lock that operates in the direction to release the lock by pressing the door lock release buttons 6 on both the left and right sides of the lower door 5. A nail 7 is provided. The lock claw 7 is inserted into lock guides 8 provided on both sides of the front surface of the opening 3, and is engaged with an engagement portion (not shown) inside to lock the door.

Next, a door interlocking opening / closing mechanism having interlocking means in this embodiment will be described in detail. The interlocking door opening / closing mechanism is provided on each of the left and right side surfaces of the cleaning tank 2, but since it has the same configuration, only the right side is shown here.
4A and 4B are internal structural views of the dishwasher with the outer cover removed as viewed from the right side, wherein FIG. 4A shows a state when the door is closed and FIG. 4B shows a state when the door is opened. FIG. 5 is an operation explanatory view showing only the door and the interlocking opening / closing mechanism, (a) is an operation explanatory view when the door is closed, and (b) is an operation explanatory view showing a state in the middle of opening the upper door and the lower door. is there. 6A to 6D are operation explanatory views schematically showing the operation of the interlocking opening / closing mechanism of the door shown in FIGS.

As shown in FIGS. 4 to 6, the interlocking opening / closing mechanism 10 of the door is configured by a link mechanism, and the first link 11 and the second link 12 are used as interlocking means for the upper door 4 and the lower door 5. I have.
The lower door 5 is pivotally supported at a lower portion of the cleaning tank 2 by a rotation fulcrum 13 (see FIGS. 5 and 6), and a lower door arm 14 is formed integrally with the lower door 5. A lower end portion of the first link 11 is rotatably connected to a distal end portion of the lower door arm 14 at a fulcrum 15. The tip end of the second link 12 is rotatably connected to the upper end of the first link 11 at a fulcrum 16, and the base end of the second link 12 is connected to the side surface of the cleaning tank 2 (or to the side surface of the cleaning tank). A mounting plate) is rotatably connected at a fulcrum 17. An upper door support arm 18 provided integrally with the upper door 4 is rotatably connected to the second link 12 at a fulcrum 19. The second link 12 is provided with a stopper 20 that restricts the upper door 4 from being lowered freely by its own weight when the door is opened.

  Moreover, in FIG. 6, 21 is the ceiling part (or top plate part of the tableware washing machine main body 1) of the washing tank 2, and the front surface of the washing tank ceiling part 21, ie, the opening surface 22 of the washing tank 2 (refer FIG. 5). The upper side portion of the upper door 4 and the upper side portion of the upper door 4 facing the upper side portion are provided with a concave portion 23 formed in a labyrinth shape and a convex portion 24 fitted thereto, thereby forming a seal portion 25. . Concave portion 23 and convex portion 24 may be provided with concave portion 23 on the upper door 4 side and convex portion 24 on the cleaning tank 2 side, contrary to the illustration. Moreover, it is preferable to provide the concave part 23 and the convex part 24 in each upper side part of the washing tank 2 and the upper door 4 at least.

  Here, before explaining the operation of the door interlocking opening / closing mechanism 10, the basic operation of the dishwasher will be outlined.

The operation of the dishwasher is generally performed in the order of a dish washing process, a rinsing process, and a drying process.
In the cleaning process, a fixed amount of water is supplied into the cleaning tank 2 by a water supply means (not shown), and a detergent for decomposing and removing the dishes is put into the cleaning tank 2. The washing water is heated to a certain temperature by a heating element such as a sheathed heater. The washing water is sucked in by a washing pump (not shown), sent to a washing nozzle (not shown), and sprayed toward the dishes from the holes of the washing nozzles to wash away the stains on the dishes. The sprayed cleaning water drops into the cleaning tank 2 and returns, and is again sucked into the cleaning pump and repeatedly sprayed while circulating the cleaning water. After operating the cleaning pump for a certain period of time, the water inside the cleaning tank 2 is drained from an outlet (not shown) to sewage outside.

The rinsing process is performed for the purpose of rinsing the detergent and dirty water adhering to the dishes, and the washing operation itself is the same as the washing process. In the rinsing step, the washing water containing the detergent is completely drained from the washing tank 2, and then clean water is supplied and the dishes are rinsed by spraying the water from the washing nozzle.
Washing and rinsing of tableware are performed by performing this water supply → circulation injection for a certain period of time → drainage usually about 2 to 4 times.

  Finally, the dishes are dried by applying warm air or room temperature air to the dishes with a blower (not shown). The drying air is exhausted to the outside through an exhaust hole (not shown) provided in the ceiling portion of the cleaning tank 2.

Next, the operation of the door interlocking opening / closing mechanism 10 will be described mainly with reference to FIG.
First, when the upper door 4 and the lower door 5 are closed as shown in FIG. 6A, the lower door 5 is opened as shown in FIG. 6B. The lower door 5 can be opened by rotating downward because the lock claw 7 is unlocked by pressing the door lock release button 6. That is, the lower door 5 rotates about the rotation fulcrum 13 in the direction of the arrow 51, and accordingly, the lower door arm 14 formed integrally with the lower door 5 also rotates upward about the rotation fulcrum 13. When the lower door arm 14 rotates upward, the first link 11 connected to the lower door arm 14 is pushed upward as indicated by an arrow 52. As a result, the second link 12 connected to the first link 11 rotates upwardly as indicated by the arrow 53 around the fulcrum 17.

  Furthermore, since the second link 12 rotates upward, the upper door support arm 18 formed integrally with the upper door 4 is connected to the second link 12 at the fulcrum 19, so the upper door support arm 18. As shown in FIG. 6B, the upper door support arm 18 rotates downward about the fulcrum 19 as indicated by the arrow 54 until the angle θ1 formed by the second link 12 becomes the angle θ2. The upper door support arm 18 and the second link 12 are held by the stopper 20 so as not to rotate more than the angle θ2.

  That is, the angle between the upper door support arm 18 and the second link 12 is higher than the angle θ1 when the upper door 4 and the lower door 5 are completely closed (FIG. 6A). The angle θ2 when the lower door 5 is slightly opened (FIG. 6B) is slightly larger. As described above, the angle between the upper door arm 18 and the second link 12 increases, so that the upper door 4 is substantially perpendicular to the opening surface 22 as shown in FIGS. It moves in the direction (arrow 55) and opens. Therefore, the convex portion 24 provided on the upper side portion of the upper door 4 is separated from the concave portion 23 provided on the front surface of the cleaning tank ceiling portion 21 (the upper side portion of the opening 3). Thereby, the fitting between the convex portion 24 and the concave portion 23 is released.

When the lower door 5 further rotates, the second link 12 is pushed up by the first link 11, so that the upper door support arm 18 and the second link 12 have an angle θ2 as shown in FIG. 6C. , And rotate substantially upwards as indicated by the arrow 56 around the fulcrum 17. As a result, the upper door 4 is rotated and positioned on the top plate portion of the dishwasher main body 1, and the lower door 5 is rotated by approximately 90 ° downward and opened.
When the lower door 5 is closed, the operation is the reverse of the above.

  In the dishwasher of the first embodiment, the door interlocking opening / closing mechanism 10 connects the second link 12 to the first link 11 interlocking with the opening / closing operation of the lower door 5 as described above, and this Since the upper door arm 18 is connected to the second link 12, the trajectory of the opening / closing operation of the upper door 4 is a first movement component (arrow) that moves in a direction substantially perpendicular to the opening surface 22. And a second moving component (a component indicated by an arrow 56) that moves in a direction substantially parallel to the opening surface 22. Since the first moving component can increase the moving distance in the direction substantially perpendicular to the opening surface 22, the sealing structure (seal part 25) between the upper door 4 and the cleaning tank 2 is formed into a deep groove, for example, in a labyrinth shape. Can be constituted by the concave portion 23 and the convex portion 24.

Therefore, by closing the upper door 4 by fitting the concave portion 23 and the convex portion 24 when the door is closed, the water that collides with the tableware and the like in the cleaning tank 2 is scattered even if these concave shapes are formed. Even if the seal portion 25 composed of the portion 23 and the convex portion 24 is hit directly, the momentum of water is diminished in the gap between the concave portion 23 and the convex portion 24, so that water oozes on the top plate from this gap. There is no such thing as going out.
Therefore, the water tightness between the upper door 4 and the cleaning tank 2, particularly the water tightness at the upper side of the opening 3 can be greatly improved.

Further, since the moving distance in the vertical direction with respect to the opening surface 22 is large, a rubber seal member (not shown) can be sufficiently pressed. Therefore, even if the seal portion 25 is composed of such a seal member. Sufficient water tightness can be exhibited.
Furthermore, when the sealing member 25 is configured by mounting the sealing member in the concave portion 23, further improvement in water tightness can be realized.

  Moreover, according to the structure of the seal | sticker part 25 illustrated above, since it is also possible to make thickness of the ceiling part 21 of the washing tank 2, ie, the top plate part of the tableware washing machine main body 1, thinner, Besides being able to increase the volume, it has great ripple effects such as downsizing and weight reduction of dishwashers and cost reduction.

Embodiment 2. FIG.
FIG. 7 is an internal structural view of the dishwasher showing the second embodiment of the present invention with the outer cover removed as viewed from the right side, (a) when the door is closed and (b) when the door is open. Show. FIGS. 8A to 8C are operation explanatory views schematically showing the operation of the door interlocking opening / closing mechanism shown in FIG. 7, and FIG. 9 is an explanatory view showing the balance of forces when the door is closed.

  The interlocking opening / closing mechanism 10A for the door according to the second embodiment is configured by adding the following members and parts to the interlocking opening / closing mechanism 10 described above. That is, the third link 27 pivotally attached to the side surface of the cleaning tank 2 (or the mounting plate attached to the side surface of the cleaning tank) at the fulcrum 26 and the third link so as to urge the upper door 4 in the closing direction. A tension spring 28 (an example of an urging means) that connects the arm 27 and the upper door support arm 18 is added. Further, the second link 12 is formed in a T-shape, and the T-shaped leg portion is not provided with a load portion 29 for applying a constant load between the third link 27 and the upper door support arm 18. The third link 27 is brought into contact with the third member 27 via the sliding member 30. The upper door support arm 18 extends long, and an intermediate portion thereof is connected to the second link 12 by a fulcrum 19. The tension spring 28 is mounted between the distal end portion of the second link 12 and the distal end portion of the third link 27. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  Next, the operation will be described. Since the basic operation of the dishwasher is the same as that of the first embodiment, the description thereof will be omitted, and the operation unique to the interlocking opening / closing mechanism 10A of the second embodiment will be described.

  First, when the upper door 4 and the lower door 5 are closed as shown in FIG. 8A, the lower door 5 is opened as shown in FIG. 8B. The lower door 5 can be opened by rotating downward because the lock claw 7 is unlocked by pressing the door lock release button 6. That is, the lower door 5 rotates about the rotation fulcrum 13 in the direction of the arrow 51, and accordingly, the lower door arm 14 formed integrally with the lower door 5 also rotates upward about the rotation fulcrum 13. When the lower door arm 14 rotates upward, the first link 11 connected to the lower door arm 14 is pushed upward as indicated by an arrow 52. As a result, the second link 12 connected to the first link 11 rotates upwardly as indicated by the arrow 53 around the fulcrum 17.

  Furthermore, since the second link 12 rotates upward, the upper door support arm 18 formed integrally with the upper door 4 is connected to the second link 12 at the fulcrum 19, so the upper door support arm 18. As shown in FIG. 8B, the upper door support arm 18 rotates downward about the fulcrum 19 as indicated by an arrow 54 until the angle θ1 formed by the second link 12 reaches the angle θ2. The upper door support arm 18 and the second link 12 are held by the stopper 20 so as not to rotate more than the angle θ2.

  That is, the angle formed by the upper door support arm 18 and the second link 12 is higher than the angle θ1 when the upper door 4 and the lower door 5 are completely closed (FIG. 8A). 4. The angle θ2 when the lower door 5 is slightly opened (FIG. 8B) is slightly larger. As described above, the angle formed by the upper door arm 18 and the second link 12 is increased, so that the upper door 4 is substantially the same as the opening surface 22 (see FIG. 7) as shown in FIG. 8B. Move in the vertical direction (arrow 55) to separate. Therefore, the convex portion 24 provided on the upper side portion of the upper door 4 is separated from the concave portion 23 provided on the front surface of the cleaning tank ceiling portion 21 (the upper side portion of the opening 3). Thereby, the fitting between the convex portion 24 and the concave portion 23 is released.

  Further, when the second link 12 rotates upward, the third link 27 rotates in the direction of the arrow 57, and the load by the tension spring 28 applied to the third link 27 by the load portion 29 decreases. . When the load remains on the third link 27, the sliding member 30 comes into sliding contact with the third link 27, and when the load becomes zero, the load portion 29 becomes the first portion as shown in FIG. 3 links 27 away from each other.

When the lower door 5 further rotates, the second link 12 is pushed up by the first link 11, so that the upper door support arm 18 and the second link 12 have an angle θ2 as shown in FIG. 8C. , And rotate substantially upwards as indicated by the arrow 56 around the fulcrum 17. As a result, the upper door 4 is rotated and positioned on the top plate portion of the dishwasher main body 1, and the lower door 5 is rotated by approximately 90 ° downward and opened.
When the lower door 5 is closed, the operation is the reverse of the above.

Next, the balance of the forces of the third link 27, the load portion 29, and the tension spring 28 will be described with reference to FIG.
FIG. 9 shows a state in which the door is closed. In this state, the load portion 29 of the second link 12 pushes down the third link 27 with the force of P, and the third link 27 rotates downward about the fulcrum 26. At this time, the tension spring 28 connected to the third link 27 is pulled. At the same time, the tension spring 28 rotates the upper door 4 about the fulcrum 19 in order to pull the upper door support arm 18. For this reason, the tension T acts on the tension spring 28.
When the upper door 4 rotates upward, the seal portion 25 including the convex portion 24 and the concave portion 23 provided between the upper door 4 and the cleaning tank ceiling portion 21 is fitted and brought into contact. Therefore, the contact force of F acts on the seal portion 25. And in the state which the seal | sticker part 25 provided between the upper door 4 and the washing tank ceiling part 21 fitted and contacted, the pressing force P of the load part 29 and also the weight load (gravity) W of the upper door 4 are It is stored in the tension spring 28 and is in a balanced state.
Therefore, the play which generate | occur | produces in the seal | sticker part 25 provided between the upper door 4 and the washing tank ceiling part 21 can be eliminated. That is, the third link 27 and the tension spring 28 function to absorb the play of the seal portion 28.

According to the interlocking opening / closing mechanism 10A of the door in the dishwasher according to the second embodiment, it is possible to eliminate the play generated in the seal portion 25 provided between the upper door 4 and the cleaning tank ceiling portion 21 when the door is closed. As a result, water tightness is further improved.
On the other hand, when the seal portion 25 is disengaged at the initial opening of the upper door 4 when the door is opened, the pressing force of the load portion 29 of the second link 12 against the third link 27 is reduced to zero. Since the load portion 29 is separated from the third link 27, there is no urging force in the closing direction of the upper door 4, so that the upper door 4 can be opened smoothly as in the first embodiment.

  Although not shown, instead of the third link 27 and the tension spring 28, the upper door 4 is placed in the closing direction with the fulcrum 19 between the upper door support arm 18 and the second link 12. An urging tension spring (an example of urging means) may be attached. However, this tension spring can be explained with reference to FIG. 6, for example, so that the fulcrum 19 is located on the spring center line or slightly beyond the spring center line when the upper door 4 is opened as shown in FIG. 6B. It is preferable to attach. By attaching the tension spring in this way, the tension of the tension spring does not work in the closing direction of the upper door 4 when the upper door 4 is fully opened as shown in FIG. The upper door 4 can be opened smoothly.

Embodiment 3 FIG.
FIG. 10A is a schematic view of the interlocking opening / closing mechanism of the door of the dishwasher showing Embodiment 3 of the present invention as seen from the right side, and FIG. 10B is a partial detail view of the seal portion.
In the third embodiment, the door interlocking opening / closing mechanism 10A is the same as that in the second embodiment, and therefore, the same reference numerals are given and the description thereof is omitted.
Here, the seal part 25 provided between the upper door 4 and the washing tank ceiling part 21 is configured as follows. That is, the first door-side convex portion 31 is provided on the upper side portion of the upper door 4 and the second door-side convex portion 32 is provided at the upper position thereof. On the other hand, the front upper portion of the cleaning tank ceiling portion 21, that is, the upper side portion of the opening 3, is fitted between the first door-side convex portion 31 and the second door-side convex portion 32 when the door is closed. A tank side convex portion 33 is provided. Further, a sealing member 34 made of a rubber material with which the second door side convex portion 32 is in close contact with the upper position of the cleaning tank side convex portion 33 is mounted.
Further, at least one, preferably a plurality of water dropping protrusions 35 are provided on the lower surface of the cleaning tank side convex portion 33.

  Next, the operation will be described in detail. The opening and closing operations of the lower door 5 and the upper door 4 are as described in the second embodiment, and the upper door 4 is fitted to the front surface of the cleaning tank ceiling portion 21 to form a labyrinth-like seal portion 25. When the upper door 4 and the front surface of the washing tank ceiling portion 21 are fitted to perform basic operation of the dishwasher, the first door-side convex portion 31 is ejected from an ejection port (not shown). The water to be used becomes a barrier to block the water 41 rising along the inner surface of the upper door 4 on the cleaning tank side. The second door-side convex portion 32 is in close contact with the seal member 34 and prevents the splash of water that enters beyond the barrier of the first door-side convex portion 31 from leaking outside. The water drop projection 35 serves as a barrier that causes water sprayed from a jet port (not shown) to collide with the ceiling surface of the washing tub and change the direction to stop and drop the water 42 flowing along the ceiling surface.

According to the dishwasher of the third embodiment, the upper door 4 is provided with the first door-side convex portion 31 and the second door-side convex portion 32 at the upper position thereof, and these doors are provided in the cleaning tank 2. A cleaning tank side convex portion 33 that fits between the side convex portions 31 and 32 is provided, and a sealing member 34 that is in close contact with the second door side convex portion 32 is mounted at the upper position. Therefore, in particular, the sealing property of water in the upper side of the upper door 4 and the washing tub 2 can be greatly improved, and the situation where water oozes out to the top plate portion of the dishwasher main body 1 can be prevented.
Further, by providing at least one protrusion 35 serving as a barrier to stop the flow of water on the lower surface of the cleaning tank side convex portion 33, it is possible to reduce the ingress of splashing, so that further water sealing performance can be improved. It becomes.

Embodiment 4 FIG.
11 is a front view of a dishwasher showing Embodiment 4 of the present invention, FIG. 12 is a cross-sectional view taken along the line AA in FIG. 11, FIG. 13 is a cross-sectional view taken along the line BB in FIG. 12 is an enlarged cross-sectional view of a portion C and D in FIG. 12, FIG. 16 is an enlarged cross-sectional view of a portion E in FIG. 13, and FIG. 17 is an enlarged cross-sectional view of a portion F in FIG.
In the fourth embodiment, a sealing structure between the upper door 4 and the lower door 5 and the cleaning tank 2 and a sealing structure between the upper door 4 and the lower door 5 are mainly shown. The interlocking opening / closing mechanism of the door is the same as that shown in the second embodiment.
In the seal structure between the upper door 4 and the lower door 5 and the cleaning tank 2, a seal member 34 made of a rubber material is stretched around the opening portion of the cleaning tank 2. The seal member 34 has a detailed cross-sectional shape shown in FIGS.

FIG. 14 shows a seal structure in the upper side of the upper door 4 and the cleaning tank opening 3, and in this upper side, as described in the third embodiment, the first provided on the upper side of the upper door 4. The two door-side convex portions 32 are in close contact with the seal member 34 for sealing. The cross section of the seal portion of the seal member 34 is formed in a substantially inverted U shape that faces downward at the upper side portion.
FIG. 15 shows a sealing structure at the lower side of the lower door 5 and the cleaning tank opening 3, and in this lower side, the sealing member 34 is formed in a plate shape and is located in front of the bottom plate of the cleaning tank 2. It seals so that it may be pinched | interposed between the lower door receiving part 36 and the lower side part of the lower door 5 which were provided in the inclined form on the side.
FIG. 16 shows a seal structure in the side part of the upper door 4 and the cleaning tank opening 3, and in this side part, the seal member 34 is a seal formed in a substantially inverted U shape whose cross section is horizontal. And is in close contact with a stepped portion 37 provided on the upper door 4 in the vertical direction. Although the lower door 5 is not shown, it has a similar seal structure.
Thus, the seal member 34 has a form in which the cross-sectional shape of the seal portion is continuously changed.

  FIG. 17 shows a seal structure at the mating portion of the upper door 4 and the lower door 5. When the door is opened, the lower door 5 is opened first, and the upper door 4 is opened with a delay. The reverse occurs when the door is closed, and the upper door 4 is closed first, and the lower door 5 is closed after a delay. Therefore, overlapping portions 38 and 39 are provided between the upper door 4 and the lower door 5, and a sealing member 40 having a substantially U-shaped seal section is mounted between the overlapping portions 38 and 39. It is designed to be sealed.

  According to the dishwasher of the fourth embodiment, the watertightness between the washing tub 2 and the upper door 4 and the lower door 5 and the watertightness between the doors of the upper door 4 and the lower door 5 are sufficiently secured. The same watertightness as that of the third embodiment can be secured for the upper side of the cleaning tank 2 and the upper door 4.

  The door opening / closing mechanism according to the present invention has been described with respect to the link mechanism, but is not limited to the link mechanism. For example, as a means for rotating the second link 12, a wire may be routed between the second link 12 and the lower door arm 14 instead of the first link 11. Further, a cam follower and a cam groove can also be used as means for giving the first moving component and the second moving component to the upper door 4.

It is an external appearance perspective view of the door closed state of the dishwasher which shows Embodiment 1 of this invention. It is an external appearance perspective view of the dishwasher door open state in Embodiment 1. It is a right view of the dishwasher in Embodiment 1. It is an internal structure figure of the right side which shows the interlocking opening / closing mechanism of the door in Embodiment 1, (a) is a structure figure which shows the state at the time of door closing, (b) is the state at the time of door opening. It is operation | movement explanatory drawing of the door and interlocking opening-and-closing mechanism in Embodiment 1, (a) is operation | movement explanatory drawing at the time of door closing, (b) is operation | movement explanatory drawing which shows the open middle state of an upper door and a lower door. FIG. 5 is an operation explanatory view schematically showing the operation of the door interlocking opening / closing mechanism in the first embodiment. It is an internal structure figure of the right side of the dishwasher which shows Embodiment 2 of this invention, (a) is a structure figure which shows the state at the time of a door closing, (b) is the state at the time of door opening. FIG. 10 is an operation explanatory view schematically showing the operation of the door interlocking opening / closing mechanism in the second embodiment. FIG. 10 is an explanatory diagram showing a balance relationship between forces when the door is closed in the second embodiment. It is the schematic diagram (a) of the interlocking opening / closing mechanism of the door of the dishwasher which shows Embodiment 3 of this invention, and the partial detail drawing (b) of a seal | sticker part. It is a front view of the dishwasher which shows Embodiment 4 of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is an expanded sectional view of the C section of FIG. It is an expanded sectional view of the D section of FIG. It is an expanded sectional view of the E section of FIG. It is an expanded sectional view of the F section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dishwasher main body, 2 washing tank, 3 opening part, 4 upper door, 5 lower door, 6 door lock release button, 7 lock claw, 8 lock guide, 10, 10A interlocking opening / closing mechanism, 11 1st link, 12 Second link, 13 rotation fulcrum, 14 lower door arm, 15 fulcrum, 16 fulcrum, 17 fulcrum, 18 upper door support arm, 19 fulcrum, 20 stopper, 21 washing tank ceiling, 22 opening surface, 23 concave, 24 Convex part, 25 seal part, 26 fulcrum, 27 third link, 28 tension spring, 29 load part, 30 sliding member, 31 first door side convex part, 32 second door side convex part, 33 Cleaning tank side convex part, 34 Seal member, 35 Water drop projection, 36 Lower door receiving part, 37 Step part, 38, 39 Superposition part, 40 Seal member.

Claims (4)

A cleaning tank having an opening, a plurality of doors for opening and closing the opening of the cleaning tank, interlocking means for opening and closing the other door in conjunction with the opening and closing operation of one door, and the other door And the cleaning tank, the interlocking means is constituted by a link mechanism connecting a plurality of link members, and the interlocking means The first moving component that moves in the direction of separating the convex portion and the concave portion of the seal portion is substantially parallel to the opening surface of the cleaning tank. A second moving component that moves in a different direction,
The interlocking means includes a first link rotatably connected to the one door body, a second link rotatably connected to the first link and the cleaning tank, and the other door body. Urging means for urging the door in the closing direction, a third link pivotally attached to the cleaning tank and connected to a support arm of the other door body via the urging means, And a load portion that abuts against the third link, and a support arm of the other door body is rotatably connected to the second link, and the support arm and the second link A dishwasher characterized in that the angle formed with the link is such that the angle when the door is opened is larger than that when the door is closed.   2. The dishwasher according to claim 1, wherein a seal portion including the convex portion and the concave portion is provided on the other door body and an upper side portion of the washing tank. The seal part composed of the convex part and the concave part has a configuration in which a seal member to which the convex part is in close contact is mounted in the concave part when the door body is closed. 2. The dishwasher according to 2 . The seal portion formed of the convex portion and the concave portion includes a plurality of first and second door side convex portions provided on the other door body, the first door side convex portion, and the first The cleaning tank side convex portion provided in the cleaning tank fitted between the two door side convex portions, and the second door side convex shape mounted at the upper position of the cleaning tank side convex portion. dishwasher according to claim 1 or 2, wherein the section is composed of the seal member in close contact.

Images