JP7115936B2 - Dishwasher - Google Patents

Description

The present invention comprises a cleaning tank having an open upper surface which can be drawn forward from the inside of the exterior case, and a cleaning tank which is vertically movably supported in the upper part of the exterior case and which descends when the cleaning tank is pushed into the exterior case. The present invention relates to a dishwasher having a top cover that closes the top surface of a washing tank, and a packing attached to the top cover that seals the washing tank by coming into contact with the periphery of the top surface of the washing tank.

Conventionally, as a dishwasher of this kind, according to Patent Document 1, the packing is annular and has a packing main body part that abuts on the peripheral edge of the upper surface of the washing tank over the entire circumference, and an upright that extends upward from the packing main body part. It has a piece and a canopy projecting outward from the upright piece, and a packing mounting groove into which the canopy can be inserted from below is formed on the lower surface of the top lid. Bent portions that bend inward at the lower edge of a reinforcing frame that is formed in a substantially square ring shape with extending lateral side portions and arc-shaped curved portions at four corners, and that are attached to the front, rear, and lateral sides of the upper lid. is formed, and the bent portions are engaged with the lower surfaces of the eaves of the portion of the packing inserted into each of the front, rear, and lateral sides of the packing mounting groove to prevent the packing from coming off.

In this case, the bent portion of the lower edge of the reinforcing frame cannot be engaged with the underside of the eaves of the packing portion (the curved portion of the packing) inserted into the curved portions at the four corners of the packing mounting groove. Therefore, engaging plates are attached to the four corners of the lower surface of the upper lid to engage with the lower surfaces of the eaves of the curved portions of the packing to prevent the curved portions of the packing from coming off. However, in this case, in addition to the reinforcing frame, an engagement plate separate from the top lid is required, which increases the number of parts and increases the cost.

JP-A-2005-177281

In view of the above points, it is an object of the present invention to provide a low-cost dishwasher in which each curved portion of the packing can be retained without using a separate member from the top cover.

In order to solve the above-mentioned problems, the present invention provides a cleaning tank having an open upper surface which can be drawn out forward from the inside of the exterior case, and a washing tank which is vertically movably supported on the upper part of the exterior case, and which can be inserted into the interior of the exterior case. A dishwasher, comprising: a top cover that descends when the washing tank is pushed in to close the top surface of the washing tank; The packing is ring-shaped and has a packing main body that abuts on the peripheral edge of the upper surface of the washing tank over the entire circumference, an upright piece that extends upward from the packing main body, and a canopy that projects outward from the upright piece. In the lower surface of the upper lid, a packing mounting groove into which the eaves can be inserted from below includes front and rear side portions extending in the lateral direction, both side portions in the lateral direction extending in the front and back direction, and arc-shaped curved portions at the four corners. The lower edge of the reinforcing frame attached to each side of the upper lid in the front, rear, and lateral directions is bent inwardly, and the bent portions are bent in the front, rear, and lateral directions of the packing mounting groove. The outer edge of each curved portion at the four corners of the packing mounting groove is attached to the four corners of the lower surface of the upper lid to prevent the packing from slipping off by engaging the lower surface of the eaves of the packing inserted into each side of both sides. The pawl projecting inward from the lower surface and engaging with the lower surface of the eaves of the portion of the packing (each curved portion of the packing) inserted into each curved portion of the packing mounting groove extends in the circumferential direction of each curved portion of the packing mounting groove. It is characterized in that a plurality of are formed with an interval between them.

According to the present invention, each curved portion of the packing is retained by engaging the claw portion formed on the upper lid with the lower surface of the eaves portion of each curved portion of the packing. Therefore, each curved portion of the packing can be retained without using a member separate from the upper lid, and the number of parts can be reduced to reduce costs.

In addition, if the claw portion is formed continuously over the entire circumferential length of each curved portion of the packing mounting groove, the claw portion becomes an obstacle and the eaves portion of each curved portion of the packing becomes each curved portion of the packing mounting groove. cannot be inserted into the In contrast, in the present invention, since a plurality of claws are formed at intervals in the circumferential direction of each curved portion of the packing mounting groove, the eaves of each curved portion of the packing are bent between the claws to allow the packing to be removed. It can be inserted into each curved portion of the mounting groove.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic side view of the dishwasher of embodiment of this invention. The perspective view which looked at the upper cover of the dishwasher of embodiment from the diagonally downward direction. FIG. 3 is a perspective view of the top lid of FIG. 2 in an exploded state, as viewed obliquely from below; (a) An enlarged cross-sectional view cut along IVa-IVa line in FIG. 2, (b) An enlarged cross-sectional view cut along IVb-IVb line in FIG.

The dishwasher according to the embodiment of the present invention shown in FIG. 1 includes an exterior case 1 with an open front surface, and a washing tank 2 that can be drawn forward from the interior of the exterior case 1 . The upper surface of the washing tank 2 is an open surface, and while the washing tank 2 is pulled out from the exterior case 1, the tableware is put into and taken out of the washing tank 2 from above. An upper cover 3 for the cleaning tank 2 is supported in the upper part of the exterior case 1 so as to be vertically movable and urged upward by a spring (not shown).

A cam groove 4 is formed in the upper part of the outer surface on each lateral side of the cleaning tank 2 . Further, rollers 6 engaging with cam grooves 4 are pivotally attached to operating plates 5 connected to the lateral sides of the upper lid 3 and extending downward. When the cleaning tank 2 is pushed into the exterior case 1, the roller 6 engages the downward inclined portion 4a at the front end of the cam groove 4, thereby lowering the upper lid 3 and closing the upper surface of the cleaning tank 2. I'm trying

The upper lid 3 is made of synthetic resin, and metal reinforcing frames 7 are attached to the front, rear, and lateral sides of the upper lid 3 to prevent the upper lid 3 from warping, as shown in FIGS. It is A packing 8 made of an elastic material such as silicone rubber is attached to the upper cover 3 to seal the cleaning tank 2 by coming into contact with the periphery of the upper surface of the cleaning tank 2 . The packing 8 is formed in a substantially rectangular annular shape having laterally extending front and rear side portions 8a, longitudinally extending lateral side portions 8b, and arc-shaped curved portions 8c at four corners. As shown in FIG. 4, the packing 8 has a tube-shaped packing main body 81 that abuts on the peripheral edge of the upper surface of the cleaning tank 2, and an upright piece 82 that extends upward from the packing main body 81, as shown in FIG. It has a canopy portion 83 projecting outward from the standing piece portion 82 . In this embodiment, the upper portion of the standing piece portion 82 extends above the eaves portion 83, but the upper portion of the standing piece portion 82 may be cut.

In the lower surface of the upper lid 3, a packing mounting groove 31 into which the eaves portion 83 can be inserted is provided with front and rear side portions 31a extending in the same horizontal direction as the packing 8, lateral side portions 31b extending in the front and rear direction, and four corners. It is formed in a substantially square annular shape having an arc-shaped curved portion 31c. In addition, bent portions 71 that bend inward are formed at the lower edges of the reinforcing frames 7 attached to the front, rear, and lateral sides of the upper lid 3 . Then, as shown in FIG. 4A, the bent portions 71 are bent into the front, rear, and lateral portions of the packing 8, which are portions of the packing 8 inserted into the front, rear, and lateral sides 31a, 31b of the packing mounting groove 31, respectively. The packing 8 is prevented from coming off by engaging with the lower surfaces of the eaves portions 83 of the side portions 8a and 8b on both sides in the direction.

However, the bent portions 71 cannot be engaged with the lower surfaces of the eaves 83 of the curved portions 8c of the packing 8, which are the portions of the packing 8 inserted into the curved portions 31c at the four corners of the packing mounting groove 31. Therefore, in this state, the curved portions 8c of the packing 8 cannot be retained. In this case, it is conceivable to attach a member to the upper lid 3 for retaining the curved portions 8c of the packing 8, but this increases the number of parts and the cost.

Therefore, in this embodiment, as shown in FIG. A claw portion 32 is formed to engage with the lower surface of the eaves portion 83 of each curved portion 8c of the packing 8 inserted into the portion 31c. According to this, each curved portion 8c of the packing 8 can be retained by the claw portion 32 without using a member separate from the upper lid 3, and the number of parts can be reduced to reduce the cost.

However, if the claw portion 32 is formed continuously over the entire circumferential length of each curved portion 31c of the packing mounting groove 31, the claw portion 32 becomes an obstacle and the overhanging portion 83 of each curved portion 8c of the packing 8 becomes can not be inserted into each curved portion 31 c of the packing mounting groove 31 . Therefore, in the present embodiment, a plurality of (three in the illustrated example) claw portions 32 are formed at intervals in the circumferential direction of each curved portion 31c at the portion where each curved portion 31c of the packing mounting groove 31 is formed. . According to this configuration, the eaves 83 of the curved portions 8c of the packing 8 can be bent between the claw portions 32 and inserted into the curved portions 31c of the packing mounting groove 31 .

The packing mounting groove 31 is formed so as to receive the upper portion of the upright piece portion 82 extending upward from the eaves portion 83 . At the position where the claw portion 32 is formed, the upper surface of the packing mounting groove 31 is formed with a through hole 33 for extracting upward a mold for molding the upper surface of the claw portion 32 .

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in FIG. 3, the packing 8 has a substantially square annular shape in the free state, but it may have a simple annular shape in the free state. Further, in the above-described embodiment, the packing main body 81 is formed in a tubular shape, but the packing main body may be solid. Furthermore, in the above-described embodiment, the upper lid 3 is moved up and down by the cam mechanism consisting of the cam groove 4 and the roller 6 in conjunction with the withdrawal and withdrawal of the washing tank 2. The mechanism for moving up and down may be another mechanism such as a link mechanism, or the top cover 3 may be moved up and down by an independent drive source.

DESCRIPTION OF SYMBOLS 1... Exterior case 2... Washing tank 3... Upper cover 31... Packing mounting groove 31a... Front and rear sides of packing mounting groove 31b... Both lateral sides of packing mounting groove 31c... Packing mounting Curved portion of groove 32 Claw portion 7 Reinforcement frame 71 Bent portion 8 Packing 8a Front and rear side portions of packing (parts of packing inserted into front and rear side portions of packing mounting groove ), 8b... each lateral side of the packing (part of the packing inserted into each lateral side of the packing mounting groove), 8c... each curved section of the packing (at each curved section of the packing mounting groove part of the packing to be inserted), 81...packing main body part, 82...upright piece part, 83...eaves part.

Claims (1)

A cleaning tank with an open upper surface that can be pulled out forward from the outer case, and a cleaning tank that is supported on the upper part of the outer case so that it can move vertically, and when the cleaning tank is pushed into the outer case, the upper surface of the cleaning tank is lowered. and a packing that seals the washing tank by coming into contact with the peripheral edge of the upper surface of the washing tank.
The packing is ring-shaped and has a packing main body that abuts on the peripheral edge of the upper surface of the washing tank over the entire circumference, an upright piece that extends upward from the packing main body, and a canopy that projects outward from the upright piece. In the lower surface of the upper lid, a packing mounting groove into which the eaves can be inserted from below includes front and rear side portions extending in the lateral direction, both side portions in the lateral direction extending in the front and back direction, and arc-shaped curved portions at the four corners. The lower edge of the reinforcing frame attached to each side of the upper lid in the front, back, and lateral directions is bent inwardly, and the bent portions are bent in the front, back, and lateral directions of the packing mounting groove. In the one that engages with the lower surface of the eaves of the packing inserted into each side of both sides to prevent the packing from coming off,
At the four corners of the lower surface of the upper lid, claws protrude inward from the lower surface of the outer edge of each curved portion of the packing mounting groove and engage with the lower surface of the eaves of the portion of the packing inserted into each curved portion of the packing mounting groove, A dishwasher, wherein a plurality of packing mounting grooves are formed at intervals in the circumferential direction of each curved portion of the packing mounting groove.

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