JP2011019601A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher which is excellent in the sealing performance of the opening of a washing tub and a door body and is also excellent in the operability of the door body. <P>SOLUTION: A seal member 11 including a first seal portion 11a and a second seal portion 11b is integrally attached so as to be along the inner surface of the opening 5 of the washing tub 2. Since a lower door abutting portion 12a and an upper door abutting portion 13b seal the first seal portion 11a for a prescribed amount in a door body closed state, the first seal portion 11a is deformed, the second seal portion 11b is brought down inwards so as to seal the outer side surface of the lower door abutting portion 12a and the upper door abutting portion 13b, and thus double sealing is achieved by door body closing force for compressing only the first seal portion 11a. When an upper door upper side abutting portion 13a seals the first seal portion for the prescribed amount similarly in the door body closed state, the first seal portion 11a is deformed, the second seal portion 11b is deformed upwards so as to seal the upper door upper side abutting portion 13, and thus the double sealing is achieved by the door body closing force for compressing only the first seal portion 11a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dishwasher for washing dishes and the like, and more particularly to a seal configuration of a dishwasher.

  A conventional dishwasher of this type is configured as shown in FIGS. 5 to 6 (see, for example, Patent Document 1).

  Hereinafter, the configuration will be described. The dishwasher stores objects to be cleaned such as tableware in the washing tank 101, and the front opening 102 provided in the washing tank 101 is closed by the door body 103, and then the washing pump 104 is operated. By spraying pressurized cleaning water from the cleaning nozzle 105, the cleaning and rinsing steps of the object to be cleaned are performed. The front opening 102 is provided with a seal member 106 formed of an elastic body (for example, rubber). The seal member 106 includes a first seal portion 106a and a second seal portion 106b. The contact portion 107, the first seal portion 106a, and the second seal portion 106b provided on the door body 103 include High sealing performance is realized between the front opening 102 and the door body 103 by double pressure contact.

Japanese Patent Laid-Open No. 06-154146

  However, in the conventional dishwasher, since the contact portion and the second seal portion are rubbed when the door body is closed, the closing operation of the door body becomes heavy due to the frictional force generated at this time. Since the seal portion rubs against the contact portion every time, the seal portion deteriorates immediately, and the water tightness at the second seal portion is remarkably lowered.

  The present invention solves the above-described conventional problems, and realizes high sealing performance by the double seal by the first seal portion and the second seal portion, and the closing operation of the door body is also light. An object of the present invention is to provide a high-quality dishwasher in which the water-tightness at the seal portion of the glass is hardly lowered.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention is a dishwasher that sprays washing water to wash an object to be cleaned, and has an opening on the front side for taking in and out the object to be cleaned. A main body, a cleaning nozzle that injects cleaning water into the cleaning tank, a seal member provided on the upper and side portions of the front surface portion, and a door body that has an abutment portion that opens and closes the opening and contacts the seal member. The seal member includes a first seal portion and a second seal portion formed integrally with the first seal portion, and when the door body closes the opening portion, the first seal portion contacts the contact portion. And the second seal part is displaced in conjunction with the deformation of the first seal part so as to come into contact with the contact part. With this configuration, when the door body is closed, the seal by the second seal portion is performed by the deformation operation of the first seal portion, so that the operating force on the door body necessary to deform the first seal portion Only a double seal with the first and second seals is realized, and both high operability and sealability are achieved, and the deterioration of the second seal is significantly suppressed. Machine can be realized.

  As described above, according to the present invention, it is possible to provide a high-quality dishwasher in which the force for closing the door body is reduced and the deterioration of the sealing member for double sealing is suppressed.

The perspective view at the time of the door body opening of the dishwasher in the 1st Embodiment of this invention Side vertical section of the dishwasher (A) AA sectional view in Drawing 1 of the dishwasher just before the contact part of a door body contacts the 1st seal part, (b) The contact part of a door body is the 1st seal part 1 is a cross-sectional view of the dishwasher taken along the line AA in FIG. 1, and (c) the A in FIG. 1 of the dishwasher in which the contact portion of the door body is pressed against the first seal portion. -A sectional view, (d) AA in FIG. 1 of the dishwasher in which the contact portion of the door body presses against the first seal portion when the first seal portion has no protrusion. Cross section (A) BB sectional view in Drawing 1 of the dishwasher just before the contact part of a door body contacts the 1st seal part, (b) The contact part of a door body is the 1st seal part FIG. 1 is a cross-sectional view of the dishwasher taken along the line B-B in FIG. 1, and FIG. 1B shows the dishwasher in FIG. 1 in which the contact portion of the door body is pressed against the first seal portion. -B sectional view Side view of a conventional dishwasher Detailed view of the seal part of a conventional dishwasher

  1st invention is a dishwasher which injects washing water and wash | cleans a to-be-washed object, Comprising: The main body which has the opening part for taking in / out a to-be-washed object in a front part, and washing water are injected in a washing tank A cleaning nozzle, a seal member provided on an upper portion and a side portion of the front surface portion, and a door body having an abutment portion that opens and closes the opening portion and abuts against the seal member, and the seal member includes a first seal portion and a first seal portion. A second seal portion formed integrally with the first seal portion, and when the door body closes the opening, the first seal portion is pressed against the contact portion and elastically deformed, In this dishwasher, the two seal portions are displaced in conjunction with the deformation of the first seal portion, thereby abutting against the abutment portion. With this configuration, when the door body is closed, the seal by the second seal portion is performed by the deformation operation of the first seal portion, so that the operating force on the door body necessary to deform the first seal portion Only a double seal with the first and second seals is realized, and both high operability and sealability are achieved, and the deterioration of the second seal is significantly suppressed. Machine can be realized.

  In particular, according to a second aspect of the present invention, in the first aspect, the second seal member located at the upper portion of the front surface portion has a contact position with the contact portion between the first seal portion and the contact portion. It is set as the structure located in the outer side of a washing tank from a contact position. With this configuration, even if the first seal part is operated in an incomplete state due to foreign matter such as leftovers attached to the abutting part or the first seal part of the door body, the second seal part is used for sealing. By doing so, it is possible to prevent water leakage to the outside of the machine and steam leakage, and high sealing performance can be realized.

  According to a third aspect of the invention, in particular, in the first or second aspect of the invention, the second seal member located on the side portion of the front surface portion has a contact position with the contact portion that is the first seal portion. It is set as the structure located inside the said washing tank from the contact position with the said contact part. With this configuration, since the second seal portion guards in front, it is possible to prevent the cleaning water from directly hitting the first seal portion, and high sealing performance can be realized.

  In the fourth invention, in particular, in the first to third inventions, a portion of the first seal portion that contacts the contact portion has a protrusion, and the contact portion is the first seal portion. When abutting on the seal part, a frictional force is generated by hooking the protrusion on the abutment part, preventing a deformation operation failure due to a side slip of the first seal part, and realizing a predetermined deformation operation with certainty. It is possible to achieve high sealing performance.

  The fifth invention is a dishwasher in which, in particular, in the first to fourth inventions, the cross-sectional shape of the first seal portion is a substantially circular shape, and the direction in which the contact portion presses the first seal portion is Even if it differs depending on the part of the door body, it is not necessary to divide the sealing member into separate parts, and there is no joint between the seals, so that high sealing performance can be realized.

(Embodiment 1)
1-4 has shown each figure of the dishwasher in the 1st Embodiment of this invention.

  A dishwasher that injects washing water to wash an object to be cleaned such as tableware 3 is provided with a washing tank 2 inside a main body 1. Moreover, the main body 1 has an opening 5 for taking in and out the tableware 3 and the like on the front surface portion 20. A table basket 4 for setting an object to be cleaned such as tableware 3 is accommodated inside the cleaning tank 2 so as to be able to be taken in and out from the opening 5. The tableware basket 4 is composed of a lower tableware basket 4 a arranged at the lower part of the washing tub 2 and an upper tableware basket 4 b arranged at the upper part of the washing tub 2. The opening 5 is configured to be opened and closed by the door body 6.

  The door body 6 has a lower door body 6a and an upper door body 6b. The lower door body 6a is rotatably supported by the lower support shaft 7a at the lower end of the opening 5 and opens to a position where the inner surface of the opening 5 is substantially horizontal upward and downward. The upper door body 6 b is configured by an upper door body 6 b that is rotatably supported by the upper support shaft 7 b on the side wall of the cleaning tank 2 and opens so as to cover the upper surface of the main body 1.

  A lower rotary cleaning nozzle 8a is provided at the lower portion of the cleaning tank 2 to spray and wash cleaning water mainly on the tableware 3 set in the lower tableware basket 4a. An upper cleaning nozzle 8b is provided at the upper part of the cleaning tank 2 to spray and wash cleaning water mainly on the tableware 3 set in the upper tableware basket 4b. A cleaning pump 9 for supplying cleaning water to the lower rotary cleaning nozzle 8a and the upper cleaning nozzle 8b is disposed below the cleaning tank 2.

  A seal member 11 made of an elastic material (for example, silicon rubber) is provided along the inner wall 10 on the upper and side portions around the front surface portion 20. The seal member 11 includes a first seal portion 11a, a second seal portion 11b, and a projection portion 11c. The first seal portion 11a has a substantially circular shape with a hollow cross-sectional shape. The second seal portion 11b is provided so as to protrude from the outer periphery of the first seal portion 11a, and has a lip shape provided on the inner wall 10 side of the cleaning tank 2 from the center of the circular cross section of the first seal portion. The protruding portion 11c is provided in the first seal portion, and is formed in a protruding shape provided at the approximate center of the circular cross section on the outer periphery of the first seal portion 11a. In addition, the sealing member 11 is continuously formed integrally on the inverted U shape without being divided in the longitudinal direction.

  The lower door body 6a is provided with a lower door contact portion 12a that presses the inside of the cleaning tank 2 with a predetermined tightening margin from the approximate center of the first seal portion 11a when the door body 6 is closed. Inside the cleaning tank 2 of the lower door contact portion 12a, the lower door waterproof rib 12b is configured to completely cover the first seal portion 11a when the door body is closed. The lower door waterproof rib 12b is predetermined with respect to the first seal portion 11a in the closed state of the door body 6 so that the lower door body 6a does not contact the first seal portion 11a in the opening / closing operation of the lower door body 6a. It is formed so as to have a gap.

On the upper side of the upper door body 6b, there is provided an upper door upper side contact portion 13a that presses the outside of the cleaning tank 2 with a predetermined tightening margin from the approximate center of the first seal portion 11a when the door body 6 is closed. Yes. Similar to the lower door 6a, the upper door 6b is in contact with the inner side of the cleaning tank 2 with a predetermined tightening margin from the approximate center of the first seal portion 11a when the door is closed. A portion 13b is provided. Inside the cleaning tank 2 of the upper door contact portion 13b, the upper door waterproof rib 13c is configured to completely cover the first seal portion 11a when the door body 6 is closed. The upper door waterproof rib 13c is the first by the opening / closing operation of the upper door body 6b.
The door 6 is formed so as to have a predetermined gap with respect to the first seal portion 11a so as not to come into contact with the seal portion 11a.

  In the upper corner portion (Z portion in FIG. 1) of the opening portion 5, the sealing surface of the upper door body 6 b is a torsional curved surface, and the pressure contact direction of the first sealing portion 11 a to the cylindrical shape is that of the main body 1. It gradually changes from the front-rear direction (pressure contact of the side of the upper door body 6b) to the vertical direction of the main body 1 (pressure contact of the upper side of the upper door body 6b). The upper door waterproof rib 13c gradually decreases in height at the upper corner portion, and disappears from the substantially central portion of the corner. The operation of the dishwasher configured as described above will be described.

  The tableware 3 is set after the lower door body 6a and the upper door body 6b are opened and the lower tableware basket 4a and the upper tableware basket 4b are pulled out. After completing the setting of the tableware 3, the lower tableware basket 4a and the upper tableware basket 4b are pushed into the washing tub 2, and the opening 5 is closed by the lower door body 6a and the upper door body 6b. At this time, it is necessary to press-deform the first seal part 11a by a predetermined amount by the lower door contact part 12a, the upper door upper side contact part 13a, and the upper door contact part 13b, but the first seal part 11a is an elastic body. In addition, since it has a hollow shape, it can be deformed with a small force, and a large force is not required to close the lower door body 6a and the upper door body 6b, and the closing operability is good.

  Further, when the door body 6 is closed, the lower door contact portion 12a and the upper door contact portion 13b compress the inside of the cleaning tank 2 from the approximate center of the first seal portion 11a, whereby the first seal portion 11a. Is deformed so that the second seal portion 11b falls inward. As a result, in the closed state of the door body 6, the second seal portion 11b comes into contact with the outer surfaces of the lower door contact portion 12a and the upper door contact portion 13b, so that double sealing can be realized. Thereby, even if the foreign matter such as leftovers adheres to the lower door contact portion 12a, the upper door contact portion 13b and the first seal portion and the seal of the first seal portion 11a is incompletely operated, By sealing with the second seal portion 11b, it is possible to prevent water leakage to the outside of the machine and steam leakage, and high sealing performance can be realized.

  Further, when the door body is closed, the lower door contact portion 12a and the upper door contact portion 13b are hooked on the protrusions provided on the first seal portion 11a, so that the first seal as shown in FIG. Since the part 11a does not slide sideways and a predetermined deformation operation can be realized, a double seal can be realized with certainty.

  In addition, when the door body 6 is closed, the upper door upper side contact portion 13a presses the cleaning tank 2 outward from the approximate center of the first seal portion 11a, so that the second seal portion 11b is deformed upward. To do. As a result, in the closed state of the door body, the second seal portion 11b comes into contact with the upper door upper side contact portion 13a, so that a double seal can be realized. Since the upper door body 6b opens upward and rearward, the upper door body 6b does not have a structure such as the lower door waterproof rib 12b and the upper door waterproof rib 13c, so that the cleaning water directly hits the seal portion 11. The seal of the second seal part can prevent the direct hit of the washing water on the seal part of the first seal part 11a and the upper door upper side contact part 13a, and can realize high sealing performance.

  The sealing direction (pressing direction) of the first seal portion 11a is different from the rear side and the lower side on the side and upper side of the front surface portion 20, respectively, but the cross-sectional shape of the first seal portion 11a is substantially circular. It is possible to change the sealing direction smoothly and continuously. Moreover, since the sealing member 11 can be formed by one component, there is no joint like a divided configuration, and high sealing performance can be realized.

  As described above, the dishwasher according to the present invention is a high-quality dishwasher having a high sealing performance between the opening of the washing tub and the door body, and is an easy-to-use dishwasher with good operability of the door body. It is applicable not only to tabletop dishwashers but also to built-in and commercial dishwashers.

3 Tableware (objects to be cleaned)
2 Cleaning tank 8a Lower rotating cleaning nozzle 8b Upper cleaning nozzle 5 Opening 12a Lower door contact portion 13a Upper door upper side contact portion 13b Upper door body contact portion 6a Lower door body 6b Upper door body 11 Seal member 11a First Seal part 11b Second seal part 20 Front part

Claims (5)

A dishwasher that sprays washing water to wash an object to be cleaned,
A main body having an opening on the front side for taking in and out the object to be cleaned;
A cleaning nozzle for injecting cleaning water into the cleaning tank;
A seal member provided at an upper portion and a side portion of the front surface portion; a door body having a contact portion that opens and closes the opening portion and contacts the seal member;
With
The seal member includes a first seal portion and a second seal portion formed integrally with the first seal portion,
When the door body closes the opening, the first seal portion is pressed against the contact portion and elastically deformed, and the second seal portion is deformed by the first seal portion. A dishwasher that abuts against the abutment by displacing in conjunction. The second seal member positioned at the upper part of the front surface portion is located outside the cleaning tank at a contact position with the contact portion from a contact position between the first seal portion and the contact portion. The dishwasher according to claim 1. The second seal member located on the side of the front surface portion has a contact position with the contact portion that is closer to the inside of the cleaning tank than a contact position between the first seal portion and the contact portion. The dishwasher according to claim 1 or 2, which is located. The dishwasher according to any one of claims 1 to 3, wherein a portion of the first seal portion that comes into contact with the contact portion has a protrusion. The dishwasher according to any one of claims 1 to 4, wherein a cross-sectional shape of the first seal portion is substantially circular.

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