JP6859115B2 - Dishwasher - Google Patents

Description

In the present invention, a housing having an open front surface, a washing tank having an open upper surface capable of storing tableware, which can be pulled out forward and stored in the housing, and an upper surface of the washing tank provided in the housing are provided. The present invention relates to a dishwasher equipped with a seal lid that opens and closes.

Conventionally, as this type of dishwasher, according to Patent Document 1, a link mechanism for moving the seal lid in parallel between an raised open position and a lowered closed position is provided, and the washing tank is provided with a link mechanism. It is known that a cam member that can come into contact with the engaging portion is provided. The cam member has an inclined portion that is inclined upward toward the rear, and when the cleaning tank is moved rearward toward the storage position in the housing, the inclined portion comes into contact with the engaging portion, and the link mechanism is activated. It operates to lower the seal lid from the open position to the closed position. Further, the cam member has a horizontal portion extending horizontally forward from the front end of the inclined portion so that the cleaning tank reaches the storage position in a state where the horizontal portion is in contact with the engaging portion.

In the above conventional example, after the front end of the inclined portion abuts on the engaging portion and the seal lid is in the most lowered state, the horizontal portion abuts on the engaging portion in this state and the cleaning tank is stored. You will reach the position. Here, when the seal lid is in the most lowered state, the packing on the lower surface of the seal lid comes into contact with the upper end of the cleaning tank to be in the most compressed state, and the resistance to pushing the cleaning tank is maximized. As a result, in the above-mentioned conventional example, it is necessary to push the washing tub to the storage position while the resistance force against the pushing of the washing tub is maximized, and the operating force required for pushing the washing tub becomes too large. Operability deteriorates.

On the other hand, if the cleaning tank is configured to reach the storage portion while the inclined portion is in contact with the engaging portion, the operating force required for pushing the cleaning tank can be reduced and the operability can be improved. However, in this case, due to variations in the assembly of the link mechanism, when the portion of the inclined portion that contacts the engaging portion at the storage position of the cleaning tank is displaced in the front-rear direction, the amount of descent of the seal lid changes significantly, and the seal lid This causes a problem that the sealing property of the cleaning tank cannot be ensured.

JP-A-2002-165744

In view of the above points, it is an object of the present invention to provide a dishwasher capable of reducing the operating force required for pushing the washing tub and ensuring the sealing property of the washing tub with a seal lid. There is.

In order to solve the above problems, the present invention has a housing with an open front surface, a cleaning tank with an open top surface capable of storing tableware, which is retractably stored in the housing and can be pulled out forward, and inside the housing. A dishwasher provided with a seal lid that opens and closes the upper surface of the washing tub and a link mechanism that moves the seal lid in parallel between the raised open position and the lowered closed position. A cam member that can come into contact with the engaging portion provided in the mechanism is provided, and the cam member has an inclined portion that is inclined upward toward the rear, and the cleaning tank is rearward toward the storage position in the housing. When moving, the inclined portion abuts on the engaging portion, and the link mechanism operates so as to lower the seal lid from the open position to the closed position. It consists of a second inclined portion located in front of the portion, and the inclination angle upward toward the rear is defined as a rear-up inclination angle, and the second inclined portion is a constant smaller than the rear-up inclination angle of the first inclined portion. It is formed in a linear inclined portion having a rear ascending inclination angle, or the rear ascending inclination angle of the tangent line having the maximum rear ascending inclination angle among the tangents of each part of the second inclined portion is the rear ascending of the first inclined portion. The cleaning tank is formed in a curved inclined portion smaller than the inclined angle, and the cleaning tank reaches the storage position in a state where the second inclined portion is in contact with the engaging portion.

According to the present invention, when the cleaning tank reaches the storage position, it is not a horizontal portion extending forward from the front end of the inclined portion but a part of the inclined portion that comes into contact with the engaging portion as in the conventional example. Since it becomes the second inclined portion, the operating force required for pushing the washing tank can be reduced and the operability can be improved. Further, due to the variation in the assembly of the link mechanism, even if the portion of the second inclined portion that contacts the engaging portion at the storage position of the cleaning tank is displaced in the front-rear direction, the rear-up inclination angle of the second inclined portion is relatively relatively large. Since it is small, the range of change in the amount of descent of the seal lid is small, and the sealability of the cleaning tank by the seal lid can be ensured.

The perspective view of the state which pulled out the washing tub of the dishwasher of embodiment of this invention. A side view of a main part in a state where the washing tank of the dishwasher of the embodiment is pushed into the storage position. FIG. 2 is a cross-sectional view of a main part cut along the line III-III of FIG. The side view which shows the cam member of the dishwasher of embodiment. FIG. 5 is a side view showing another example of the cam member. FIG. 5 is a side view showing still another example of the cam member.

With reference to FIG. 1, the dishwasher of the embodiment of the present invention includes a housing 1 having an open front surface and a washing tank 2 which is housed in the housing 1 so as to be able to be pulled out forward. The upper surface of the washing tub 2 is open, and tableware is taken in and out of the washing tub 2 from above with the washing tub 2 pulled out from the housing 1. A front door 3 that closes the front surface of the housing 1 when the cleaning tank 2 is pushed to the storage position in the housing 1 is fixed to the front surface of the cleaning tank 2. A handle portion 31 is provided on the upper portion of the front door 3, and a lock member for locking the cleaning tank 2 to the storage position is incorporated in the handle portion 31. Further, although not shown, the washing tank 2 is provided with a tableware basket on which tableware is placed and a washing nozzle for injecting washing water toward the tableware basket.

With reference to FIGS. 2 and 3, the dishwasher further includes a seal lid 4 provided in the housing 1 for opening and closing the upper surface of the washing tank 2, and an open position in which the seal lid 4 is raised and a closed position in which the seal lid 4 is lowered. It is equipped with a link mechanism that moves in parallel with. A packing 41 is attached to the lower peripheral edge of the seal lid 4. Then, when the seal lid 4 is lowered to the closed position, the packing 41 comes into contact with the upper end of the cleaning tank 2 and is compressed so that the sealing property of the cleaning tank 2 is ensured.

Link mechanism is constituted by the lateral longitudinal placed on each side a pair of links 5 _1, 5 _2. Each link 5 _1, 5 _2, while being pivoted to the side plate portion of the housing 1 at the bottom of the shaft 51 is pivotally secured to the lid frame 42 fixed to the outer periphery of the seal cover 4 at the top of the shaft 52. Further, the seal lid 4 is urged forward by a spring 43 stretched between the seal lid 4 and the upper plate portion of the housing 1. Then, when pulling out the cleaning tank 2 forward from the housing 1, the link 5 ₁ before and after via the sealing lid 4 by the urging force of the spring _43, 5 ₂ swings forward, the sealing cover 4 is open I am trying to rise to the position. Incidentally, the rear link 5 ₂ is provided below the front link 5 _1. Therefore, by providing a hanging portion 42a extending downward to the rear of the lid frame 42, it is pivoted the rear link 5 ₂ axis 52 to the hanging portion 42a.

In addition, each link 5 _1, 5 ₂ of the front and rear, cylindrical engaging portion 53 projecting laterally inwardly is provided on the side wall outer surface of the cleaning tank 2, each link 5 ₁ before _and after 5 _{The front and rear cam members 6 1} and 6 ₂ that can come into contact with the engaging portion 53 of 2 are provided. Each cam member 6 ₁ and 6 ₂ has an inclined portion inclined upward toward the rear. The cleaning tank 2 when moving rearward toward the retracted position in the housing 1, the cam member ₆₁ of the front and _rear, 6 ₂ of the inclined portion each link 5 ₁ before _and after 5 _second engagement portion 53 The links 5 ₁ and 5 ₂ swing rearward, and the seal lid 4 descends to the closed position.

Referring to FIG. 4, the inclined portion of the cam member 6 _and 62 includes a first inclined portion 61, and a second inclined portion 62 located in front of the first inclined portion 61. The second inclined portion 62 is a linear inclined portion having a constant rear ascending inclination angle θ2 smaller than the rear ascending inclination angle θ1 of the first inclined portion 61, with the inclination angle upward toward the rear as the rear ascending inclination angle. Is formed in. Then, when moving backward toward the washing tank 2 at the storage position, first, the cam members _{61 and} 62 first inclined portion 61 of the ₂ contacts the engaging portion 53 of each link 5 _1, 5 ₂ Te, drops from the swing seal lid 4 is opened position by for each link 5 _1, 5 ₂ backward, then, as shown in phantom in FIG. 4, each cam member _{61 and} 62 second inclined portions of ₂ 62 cleaning tank 2 is to reach the retracted position in a state of contact with the engagement portion 53 of each link 5 _1, 5 _2.

As described above, in this embodiment, when the cleaning tank 2 reaches the retracted position, to abut against the engaging portion 53 of each link 5 _1, 5 _2, each cam member ₆₁ as in the conventional _example, 6 ₂ Since the second inclined portion 62 forms a part of the inclined portion instead of the horizontal portion extending forward from the front end of the inclined portion of the cleaning tank 2, the operating force required for pushing the cleaning tank 2 can be reduced and the operability can be improved. .. Also, due to variations in assembly of each link ₅ 1, _{5 2,} the cleaning tank each link ₅ 1 in a retracted position of the 2, ₅ each cam member ₆₁ abutting on the engagement portion 53 of the _{2, 6 2} of the second inclined Even if the portion 62 is displaced in the front-rear direction, the rearward inclination angle θ2 of the second inclined portion 62 is relatively small, so that the amount of change in the amount of descent of the seal lid 4 is small, and the cleaning tank 2 by the seal lid 4 is used. Can ensure the sealing performance of.

Incidentally, in the above embodiment, the second inclined portion 62 of the cam member 6 _and 62 are formed in a linear shape inclined portion, as shown in FIG. 5, the second inclined portion 62, the second inclined portion Of the tangents at each of the points 62, the tangent line having the maximum rearward inclination angle θ3 may be formed in a curved inclined portion in which the rearward inclination angle θ3 is smaller than the rearward inclination angle θ1 of the first inclined portion 61. In this case as well, the same action and effect as described above can be obtained.

In the one shown in FIG. 5, the second inclined portion 62 is formed in a curved inclined portion in which the rear ascending inclination angle gradually decreases toward the front, and the rear ascending inclination angle of the second inclined portion 62 is maximized. The rear ascending inclination angle θ3 of the tangent line of the rear end portion is made smaller than the rear ascending inclination angle θ1 of the first inclined portion 61, but as shown in FIG. 6, the second inclined portion 62 is moved forward. It is also possible to form a curved inclined portion in which the rear-up inclination angle gradually increases. In this case, the rear ascending inclination angle θ3 of the tangent line of the front end portion of the second inclined portion 62 that maximizes the rear ascending inclination angle may be smaller than the rear ascending inclination angle θ1 of the first inclined portion 61.

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 the above embodiment, the first inclined portion 61 of the cam member 6 _and 62, but are formed in a linear shape inclined portion having an upward inclination angle θ1 after a certain, to the rear upward inclination angle rearward It is also possible to form an inclined portion that gradually or continuously increases toward the slope. In this case, the minimum rear-up tilt angle of the first tilt portion 61 (the rear-up tilt angle of the front end portion of the first tilt portion) is set to θ1, and the rear-up tilt angle θ2 of the second tilt portion 62 composed of the linear tilt portion or The maximum rearward inclination angle θ3 of the second inclined portion 62 formed of the curved inclined portion may be smaller than θ1.

1 ... Housing, 2 ... Cleaning tank, 4 ... Seal lid, 5 ₁ , 5, ₂ ... Link (link mechanism), 53 ... Engagement part, 6 ₁ , 6 ₂ ... Cam member, 61 ... First inclined part, 62 ... Second inclined part.

Claims (1)

A housing with an open front, a washing tank with an open top that can store tableware that can be pulled out forward in the housing, and a seal lid that opens and closes the top of the washing tank that is provided inside the housing. A dishwasher equipped with a link mechanism for moving the seal lid in parallel between the raised open position and the lowered closed position, and the washing tank can be brought into contact with the engaging portion provided in the link mechanism. The cam member is provided with an inclined portion that is inclined upward toward the rear, and when the cleaning tank is moved rearward toward the storage position in the housing, the inclined portion becomes an engaging portion. In abutment, the link mechanism operates to lower the seal lid from the open position to the closed position.
The inclined portion is composed of a first inclined portion and a second inclined portion located in front of the first inclined portion, and the inclined portion upward toward the rear is defined as a rear-up tilt angle, and the second inclined portion is a second inclined portion. It is formed in a linear inclined portion having a constant rear ascending inclination angle smaller than the rear ascending inclination angle of the 1 inclined portion, or is the tangent line having the largest rear ascending inclination angle among the tangents of each part of the second inclined portion. The cleaning tank reaches the storage position with the rear ascending tilt angle formed in the curved inclined portion smaller than the rear ascending tilt angle of the first inclined portion and the second inclined portion in contact with the engaging portion. Dishwashing machine featuring.

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