JP4474819B2 - Dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher that closes an upper opening of a cleaning tank with an inner lid when the cleaning tank is moved in the front-rear direction and accommodated in an outer box.
[0002]
[Prior art]
2. Description of the Related Art In recent years, dishwashers that wash tableware stored in a tableware basket with washing water sprayed from a washing nozzle that rotates in a washing tank have become mainstream.
[0003]
Conventionally, this type of dishwasher has been configured as shown in FIG. Hereinafter, the configuration will be described.
[0004]
As shown in FIG. 4, the outer box 1 has an opening in the front, and supports the cleaning tank 3 through the rail 2 so as to be movable in the front-rear direction. A door 4 is attached in front of the cleaning tank 3 to open and close the opening of the outer box 1. The cleaning tank 3 has an opening 5 on the upper side, and is provided with an inner lid 6 that closes the opening 5. The inner lid 6 that closes the opening 5 of the cleaning tank 3 is provided with a packing 7 at a position facing the upper side of the cleaning tank 3.
[0005]
A protrusion 8 in the downward direction is provided on the back surface of the inner lid 6, and a pressing portion 9 is provided on the back surface of the cleaning tank 3. When the cleaning tank 3 is accommodated in the outer box 1, the protrusion 8 is moved backward by the pressing portion 9. It is arranged to push to. The inner lid 6 is movably provided inside the outer box 1 via a plurality of link mechanisms 10. The plurality of link mechanisms 10 have long holes at the center of rotation and are movable with respect to the outer box 1.
[0006]
By pushing the protruding portion 8 backward by the pressing portion 9, the inner lid 6 is lowered by the rotation of the link mechanism 10, the inner lid 6 is moved in conjunction with the movement of the cleaning tank 3, and the opening 5 of the cleaning tank 3. Is configured to cover. Further, the roller 11 of the link mechanism 10 is configured to come into contact with the lower surfaces of the protrusions 12 provided on both side surfaces of the cleaning tank 3 in a state where the cleaning tank 3 is stored in the outer box 1.
[0007]
A cleaning nozzle 13 for jetting cleaning water is rotatably provided in the cleaning tank 3, and a tableware basket 15 for storing tableware 14 is disposed. The cleaning water in the cleaning tank 3 is warmed by the heater 16, sucked from the drain port 18 by the cleaning pump 17, and pumped to the cleaning nozzle 13. The tableware 14 accommodated in the tableware basket 15 is cleaned by the cleaning water jetted from the cleaning nozzle 13 vigorously.
[0008]
To explain the operation in the above configuration, the user pulls out the washing tub 3 forward, places the tableware 14 in the tableware basket 15, stores it in the washing tub 3, puts the detergent, and then puts the washing tub 3 in the outer box 1. If the protrusion 8 provided on the inner lid 6 is pushed rearward by the pressing portion 9, the link mechanism 10 is rotated and the inner lid 6 is lowered, and the opening of the cleaning tank 3 through the packing 7. 5 is closed. At that time, the roller 11 of the link mechanism 10 abuts the lower surfaces of the protrusions 12 provided on both side surfaces of the cleaning tank 3 from below and rotates the link mechanism 10 while pushing down, thereby pulling down the inner lid 6 and cleaning tank 3. And the distance between the inner lid 6 is kept constant.
[0009]
When the operation is started in this state, the operation of the heater 16, the washing pump 17, the drainage pump (not shown), etc. is controlled by a control device (not shown), and the tableware 14 stored in the tableware basket 15 is washed and rinsed. dry.
[0010]
[Problems to be solved by the invention]
In such a conventional configuration, since the structure around the roller 11 of the link mechanism 10 is complicated and the number of parts increases, it is difficult to ensure reliability due to variations in parts, and an expensive part configuration is required. There was a problem of becoming.
[0011]
SUMMARY OF THE INVENTION The present invention solves the above problems, and provides a simple, inexpensive and highly reliable dishwasher by forming the link mechanism and the abutment unit integrally so that the link mechanism can be formed more simply. It is an object.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention supports a cleaning tank having an opening on the upper side in an outer box so as to be movable in the front-rear direction, and in the outer box through a link mechanism so as to be movable in the front-rear and vertical directions. A first shaft portion that supports the inner lid and that constitutes the rotation fulcrum of the link mechanism is provided in the outer box, and a second shaft portion that constitutes a part of the rotation trajectory of the link mechanism is provided in the inner lid, and the link mechanism In this case, an abutting portion that comes into contact with the cleaning tank from a substantially downward direction in a state where the cleaning tank is housed in the outer box is integrally provided.
[0013]
Thereby, a link mechanism can be formed more simply, and a simple, inexpensive and highly reliable dishwasher can be provided.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a cleaning tank having an opening on the upper side, an outer box that supports the cleaning tank so as to be movable in the front-rear direction, and is movable in the outer box in the front-rear and vertical directions. An inner lid supported via a link mechanism, a first shaft portion provided on the outer box and constituting a rotation fulcrum of the link mechanism, and a part of a rotation trajectory of the link mechanism provided on the inner lid. A second shaft portion, and the link mechanism is integrally provided with a contact portion that comes into contact with the cleaning tank from a substantially downward direction in a state where the cleaning tank is housed in an outer box. Since the number of parts constituting the mechanism can be reduced, an inexpensive configuration can be realized, and a decrease in reliability due to component variations can be suppressed, so that a concise, inexpensive and highly reliable dishwasher is provided. be able to.
[0015]
The invention according to claim 2 is the invention according to claim 1, wherein the contact portion of the link mechanism is locked to the cleaning tank in a state where movement in the left-right direction is restricted. The mutual positional relationship can be prevented from shifting in the left-right direction, and by maintaining the proper positional relationship when the inner lid closes the opening of the cleaning tank, the blocking property between the cleaning tank and the inner lid is more reliably maintained. It is possible to provide a dishwasher that is simple, inexpensive and reliable.
[0016]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the guide portion for the cleaning tank having a substantially arc shape or a substantially inclined shape is provided in the contact portion of the link mechanism. When storing the cleaning tank, the protrusions provided on the cleaning tank can be prevented from being damaged, the frictional force between the contact part and the cleaning tank can be reduced, and the door can be opened and closed smoothly. A highly reliable dishwasher can be provided.
[0017]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0018]
As shown in FIG. 1, the cleaning tank 3 is provided with rails 2 on both left and right outer surfaces thereof, and is movable in the front-rear direction with respect to the outer box 1. An inner lid 6 is attached to the upper portion of the outer box 1 via four link mechanisms 19. A packing 7 is attached to the lower side of the inner lid 6. The inner lid 6 is connected to the outer box 1 by an elastic body 20 and is urged upward and forward. Further, the cleaning tank 3 has a pressing portion 9 at the rear center, and the pressing portion 9 is configured to be in a positional relationship capable of coming into contact with the protruding portion 8 provided on the lower rear side of the inner lid 6.
[0019]
As shown in FIG. 2, one link mechanism 19 is provided for each of the front, rear, left and right, and the hole 21 on the rotation center axis side is a long hole, and the first shaft provided in the outer box 1. The part 22 is rotatably fitted. The hole 23 on the rotation side of the link mechanism 19 is fitted to the second shaft portion 24 provided on the inner lid 6 so that the inner lid 6 can move the rotation locus around the first shaft portion 22. Yes. Further, the link mechanism 19 is provided with an abutment portion 25 so that when the cleaning tank 3 is stored in the outer box 1, the link mechanism 19 abuts on the protrusions 27 provided on the protrusions 26 on both side surfaces of the cleaning tank 3. Yes.
[0020]
As shown in FIGS. 2 and 3, the link mechanism 19 is made of a sheet metal, and a part of the link mechanism 19 is bent into an arc shape, so that the abutment portion 25 has a protrusion 26 on both side surfaces of the cleaning tank 3. A substantially arcuate guide portion 28 is formed. Further, the abutting portion 25 of the link mechanism 19 is fitted into a groove 29 provided on the lower surface of the protruding portion 27 of the cleaning tank 3 in a state where the cleaning tank 3 is housed in the outer box 1. It is configured to maintain the left and right mutual positional relationship.
[0021]
To explain the operation in the above configuration, when the cleaning tank 3 is stored in the outer box 1, the pressing part 9 provided at the rear of the cleaning tank 3 pushes the protruding part 8 provided at the lower rear side of the inner lid 6, The inner lid 6 descends against the spring force of the elastic body 20. At this time, the lower surface of the groove 29 of the projecting portion 27 comes into contact with the upper surface of the abutting portion 25 of the link mechanism 19, pulls down the link mechanism 19, and the inner lid 6 descends to a predetermined height relative to the cleaning tank 3. Can be made.
[0022]
That is, even if one side of the cleaning tank 3 falls due to the change of the cleaning tank 3 over time, the vertical distance between the cleaning tank 3 and the inner lid 6 is kept constant by pulling down the link mechanism 19 by the protrusion 27. Can be maintained.
[0023]
Even if the cleaning tank 3 tends to shift to the left and right, since the contact portion 25 of the link mechanism 19 and the groove 29 are fitted, the left and right mutual positions of the cleaning tank 3 and the inner lid 6 can be regulated. The positional relationship between the packing 7 below the lid 6 and the cleaning tank 3 in the left-right direction can be appropriately maintained. Therefore, it is possible to prevent the washing water and steam from leaking and to ensure high reliability.
[0024]
Further, since the abutting portion 25 is provided with an arcuate guide portion, the protrusion 27 can be prevented from being damaged when the cleaning tank 3 is stored in the outer box 1, and the protrusion 27 abuts against the abutting portion 25. The frictional force at the time can be reduced, and a smooth operation feeling can be obtained.
[0025]
Further, since the link mechanism 19 is configured integrally with the abutting portion 25, variations in parts can be suppressed, reliability can be easily ensured, and the configuration can be simplified and inexpensive.
[0026]
In this embodiment, the substantially arcuate guide portion 28 is provided in the abutting portion 25 of the link mechanism 19, but the guide portion may have a substantially inclined shape, and similar effects can be obtained. .
[0027]
【The invention's effect】
As described above, according to the first aspect of the present invention, the cleaning tank having the opening at the top, the outer box that supports the cleaning tank so as to be movable in the front-rear direction, and the front and rear in the outer box And an inner lid supported via a link mechanism so as to be movable in the vertical direction, a first shaft portion provided in the outer box and constituting a rotation fulcrum of the link mechanism, and a rotation locus of the link mechanism provided in the inner lid A second shaft portion that constitutes a part of the link mechanism, and the link mechanism is integrally provided with a contact portion that comes into contact with the cleaning tank from a substantially downward direction in a state where the cleaning tank is housed in an outer box. Therefore, the number of parts constituting the link mechanism can be reduced, the distance between the inner lid and the cleaning tank can be kept constant, and the sealing performance can be ensured. That is, it is possible to realize a low-priced configuration, and to suppress a decrease in reliability due to component variations, and to provide a simple, inexpensive, and highly reliable dishwasher without a complicated configuration of the contact portion of the link mechanism. Can do.
[0028]
According to the second aspect of the present invention, since the contact portion of the link mechanism is locked to the cleaning tank in a state where movement in the left-right direction is restricted, the mutual positional relationship between the cleaning tank and the contact portion shifts in the left-right direction. By maintaining an appropriate positional relationship when the inner lid closes the opening of the cleaning tank, the blocking property between the cleaning tank and the inner lid can be more reliably maintained, and it is simple and inexpensive. A highly reliable dishwasher can be provided.
[0029]
According to the invention described in claim 3, since the guide portion for the cleaning tank having a substantially arc shape or a substantially inclined shape is provided in the contact portion of the link mechanism, when the cleaning tank is stored in the outer box, To provide a dishwasher that is easy to use and highly reliable because it can prevent damage to the projections provided, reduce the frictional force between the pad and the washing tank, and open and close the door smoothly. Can do.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a dishwasher according to an embodiment of the present invention. FIG. 2 is an enlarged side sectional view of an essential part of the dishwasher. FIG. 3 is an enlarged sectional view of an essential part of the dishwasher. ] Longitudinal section of a conventional dishwasher [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer box 3 Cleaning tank 5 Opening part 6 Inner lid 19 Link mechanism 22 1st axial part 24 2nd axial part 25 Contact part

Claims (3)

A cleaning tank having an opening on the upper side, an outer box that supports the cleaning tank so as to be movable in the front-rear direction, an inner lid that is supported in the outer box via a link mechanism so as to be movable in the front-rear and vertical directions, A first shaft portion provided on the outer box and constituting a rotation fulcrum of the link mechanism; and a second shaft portion provided on the inner lid and constituting a part of a rotation trajectory of the link mechanism. The tableware washing machine which integrally provided the contact part which contact | abuts from the substantially downward direction with respect to the said washing tank in the state which accommodated the said washing tank in the outer box. The dishwasher of Claim 1 which latched the contact part of the link mechanism in the washing tank in the state which controlled the movement of the left-right direction. The dishwasher of Claim 1 or 2 which provided the guide part with respect to the washing tank of a substantially circular arc shape or a substantially inclined shape in the contact part of the link mechanism.

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