JP2008000448A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize the front/rear-directional movement when opening/closing an upper lid by a simple and inexpensive constitution in a drawer dishwasher. <P>SOLUTION: A cam follower provided at an operating body 42, abutting on a projection part 3a and pushed rearward when pushing a washing chamber 2 is fitted in a linearly inclined cam groove of a first guide member 40 attached to the upper lid 7, and a cam follower provided in the member 40 is fitted in a doglegged cam groove of a second guide member 41 attached to the inner face of the side wall of a casing. When the washing chamber 3 is pushed in, the upper lid 7 is lowered with the rearward movement of the operating body 42, however, the upper lid 7 initially moves in a vertically downward direction by the cam mechanism, after a packing 8 of the upper lid lower face comes into contact with the upper end of the washing chamber 3, slightly moves rearward, and lastly the upper lid 7 and the washing chamber 3 integrally move slightly rearward. This constitution can attain the sure water sealing property in a small moving distance in the front/rear direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher, and more particularly to a drawer-type dishwasher suitable for a built-in type to be incorporated in a storage cabinet of a system kitchen.

  In recent years, with the widespread use of system kitchens in apartment houses such as condominiums and newly built houses, the market for built-in type dishwashers for incorporation into system kitchens has expanded. The mainstream of the built-in type dishwasher is a so-called drawer-type dishwasher, and the washing cabinet that houses the tableware for storing dishes is configured to be able to be pulled forward from the main body together with the door that also serves as the front plate. . When the washing cabinet is pulled forward, the upper surface of the washing cabinet is wide open so that dishes can be easily put in and out of the washing cabinet from above, and the washing cabinet is pushed into the main body. When inserted, the upper lid retracted into the upper space in the main body when the washing cabinet is pulled out is lowered to close the upper surface opening of the washing cabinet and the washing cabinet is substantially sealed. Conventionally, such a drawer type dishwasher has several problems as described below.

  (1) In a drawer-type dishwasher, the upper lid needs to close the opening of the upper surface of the washing cabinet reliably, that is, with a high water-sealing property when the washing cabinet is housed in the main body. On the other hand, when the washing cabinet is put in and out of the main body, it is necessary to prevent the upper lid from being as resistant to the loading and unloading operation (load) of the washing cabinet as much as possible in order to ensure smooth and light operability. Furthermore, when the washing cabinet is pulled out, the upper lid stands by in the upper space in the main body. However, if this space is large, the inner volume of the washing cabinet for storing dishes becomes smaller, so It is structurally preferable to make the space as small as possible. From this point of view, various upper lid opening / closing structures have been proposed.

  For example, in the dishwasher described in Patent Document 1, the parallel lid mechanism is used to move the upper lid up and down as the washing cabinet is put in and out, and the biasing is biased by the spring in both rotation directions around a predetermined rotational position. The mechanism presses the upper lid against the upper edge of the cleaning cabinet to improve adhesion (water sealability). Further, in the dishwasher described in Patent Document 2, an operation lever for latching so as to prevent the drawer of the washing cabinet while raising and lowering the upper lid as the washing cabinet is put in and out using the parallel link mechanism. In conjunction with this operation, the upper lid is pressed against the upper edge of the cleaning cabinet by pulling the wire to enhance the adhesion.

  However, in the configuration using the parallel link mechanism in this way, when the cleaning cabinet is pulled out, the upper lid is lifted while swinging upward and forward and held upward, so that the movement between the cleaning cabinet and the front plate is performed. It is necessary to secure a space for the cleaning, which hinders an increase in the size of the cleaning cabinet in the front-rear direction. Further, in order to operate the parallel link mechanism smoothly, it is necessary to increase the play (play) to some extent, and it is difficult to increase the alignment accuracy between the upper lid and the cleaning cabinet when the upper lid is closed. is there. Furthermore, the cost of the parallel link mechanism is high because the structure is relatively complex.

  On the other hand, in the dishwasher disclosed in Patent Document 3, instead of the parallel link mechanism, a cam including a pin that acts as a cam follower and a cam member having a cam groove formed in a part of which is inclined to guide the pin. The structure which raises / lowers an upper cover with the putting in / out of a washing machine using a mechanism is adopted. However, even if the cam mechanism having such a structure is used, the pin moves along the inclined portion of the cam groove as the cleaning chamber is pushed in, so it is necessary to secure a stroke for moving the upper lid in the front-rear direction. is there. Therefore, it is the same as the case where the parallel link mechanism as described above is used in that it is difficult to ensure the size of the cleaning cabinet in the front-rear direction.

  For this reason, there is a demand for an upper lid opening / closing mechanism that can reduce the stroke in the front-rear direction as much as possible when the upper lid is opened and closed, and that can ensure high water-sealing performance when the upper lid is closed, and that is simple in structure and inexpensive. Yes.

  (2) In the drawer-type dishwasher, washing is performed by a slide rail mechanism including a slide rail attached to the washing cabinet and a slide rail attached to the inner wall surface of the housing so that the washing cabinet can be smoothly put in and out. The cabinet moves in the front-rear direction. For example, in the dishwasher described in Patent Document 4, a movable slide rail protrudes from the lower end portion of both side surfaces of the washing cabinet, and the movable slide rail protrudes from the inner surfaces of both side walls of the housing. It is free to slide. According to this structure, it is supposed that the space for arrange | positioning a slide rail between the both sides | surfaces of a washing | cleaning warehouse and the side wall inner surface of a housing | casing can be narrowed.

  However, since the mechanism for opening and closing the upper lid as described above is generally disposed between the both side surfaces of the cleaning cabinet and the inner surface of both side walls of the casing, it is necessary to secure a certain amount of space between them. In such a case, if a structure such as that described in Patent Document 4 is adopted, it is necessary to increase the amount of protrusion of the slide rail fixed to the inner surface of the side wall of the housing, and deformation and the like are likely to occur. In order to avoid this, it is only necessary to increase the strength by increasing the thickness of the slide rail itself or attaching another reinforcing member, but in any case, the cost is unavoidable.

  (3) In a dishwasher, it is necessary to detect the water level (or the amount of water) stored in the washing cabinet for the purpose of water supply control, and for this purpose, a pressure detection type water level sensor may be used (Patent Literature). 5). Such a water level sensor includes an air trap chamber that communicates with the bottom of the cleaning cabinet, a pressure sensor that detects air pressure in the air trap chamber, and a pressure hose that connects the air trap chamber and the pressure sensor.

  In order to reduce the cost of the water level sensor having such a configuration, it is desirable to form the air trap chamber integrally with the cleaning cabinet. However, when such a structure is adopted, the air in the air trap chamber is easily affected by the temperature of the water stored in the washing cabinet. As a result, for example, if cold water is supplied into the cleaning cabinet after washing or rinsing with warm water, condensation will occur in the air trap chamber, and the condensed water will block the pressure hose and detect the water level. There were cases where it would be a problem.

  (4) In the drawer type dishwasher, the washing cabinet has a considerably large weight, so that the main body moves forward when the washing cabinet is pulled out forward, or the rear of the main body when the washing cabinet is pulled out to the front end. The main body is fixed to the mounting base of the system kitchen so that it does not float up. For example, in the dishwasher described in Patent Document 6, an L-shaped front shift prevention metal fitting is fixed with a screw at a predetermined position of the mounting table, and is inserted through the screw hole of the front frame body from the front of the front frame body. The main body is fixed to the mounting table by screwing the screw into the forward displacement prevention metal fitting. However, when the main body is installed on the mounting table, the leg protruding from the bottom of the main body comes into contact with the forward slip prevention metal fitting, and in the worst case, the resin leg may be damaged.

JP 2002-238826 A JP 2003-24258 A Japanese Patent Laid-Open No. 2002-200026 JP 2005-143515 A JP-A-7-88072 JP 2002-325714 A

  The present invention has been made in view of the above problems, and a first object of the present invention is to make the stroke in the front-rear direction accompanying opening and closing of the upper lid that closes the upper surface opening of the cleaning cabinet as small as possible and at the time of closing. An object of the present invention is to provide a drawer-type dishwasher that can ensure high water-sealing properties, and has a simple structure and can reduce costs.

  The second object of the present invention is to reduce the load applied to the slide rail installed on the main body side in order to smoothly put in and out the washing cabinet, and to reduce the cost for improving the strength and reinforcing the member itself. It is an object of the present invention to provide a drawer type dishwasher that can be reduced.

  In addition, the third object of the present invention is to prevent the pressure hose of the pressure detection type water level sensor for detecting the water level in the washing cabinet from being clogged with condensed water, and to always detect the water level reliably. It is to provide a dishwasher that can be performed.

  The fourth object of the present invention is to provide a dishwasher capable of preventing the leg from being damaged when the built-in type dishwasher main body is installed on the mounting table.

The dishwasher according to the first aspect of the invention made to achieve the first object includes a main body including a substantially rectangular housing having an open front surface,
A washing cabinet that can be pulled forward from the main body and has an opening for taking in and out the tableware on the upper surface;
An upper lid for closing the upper surface opening of the cleaning cabinet;
Upper lid holding means for holding the upper lid while urging the upper lid upward in the upper space in the main body;
It is movable in the front-rear direction and is held on the inner surface of both side walls of the main body while being urged forward, and moves backward by receiving the force from the cleaning chamber as the cleaning chamber is pushed into the main body. An actuating body,
A movable member that is attached to the upper lid and guides the upper lid to be lowered as the operating body moves backward;
A fixing member attached to the main body and restricting the moving direction of the upper lid,
The actuating body and the movable member are connected to each other in a vertically movable manner via a first cam mechanism, and the moving direction of the movable member and the fixed member is regulated in the front-rear direction via a second cam mechanism. The upper lid receives a force from the washing cabinet while the moving direction is regulated in the front-rear direction by the connection between the movable member and the fixed member as the washing cabinet is pushed into the main body. Further, it is characterized in that it is guided downward by the movable member connected so as to be movable up and down as the operating body moves rearward.

The dishwasher according to the second aspect of the invention made to achieve the first object is:
A main body including a substantially rectangular housing having an open front surface;
A washing cabinet that can be pulled forward from the main body and has an opening for taking in and out the tableware on the upper surface;
An upper lid for closing the upper surface opening of the cleaning cabinet;
Upper lid holding means for holding the upper lid while urging the upper lid upward in the upper space in the main body;
It is movable in the front-rear direction and is held on the inner surface of both side walls of the main body while being urged forward, and moves backward by receiving the force from the cleaning chamber as the cleaning chamber is pushed into the main body. An actuating body,
A movable member that is attached to the upper lid and guides the upper lid to be lowered as the operating body moves backward;
A fixing member attached to the main body and restricting the moving direction of the upper lid,
The actuating body has a driving part that moves backward together when it receives a force from the cleaning cabinet and moves rearward, and the movable member is connected to the driving part and moves backward to the driving part. A driven portion that converts the movement into a force in the downward direction of the upper lid, and a guided portion that moves downward as the movable member moves downward,
The fixing member includes a guide portion that guides the guided portion that moves downward as the upper lid descends and restricts the movement of the upper lid in the front-rear direction, and the guide portion of the fixing member includes the cleaning member. As the operating body moves rearward as the storage is pushed into the main body and the upper cover descends, the guided portion is guided in the vertical direction until the upper cover comes into contact with the upper end of the upper opening of the cleaning storage. Then, the guided portion is guided so that the upper lid further descends while moving rearward together with the cleaning cabinet.

  In the dishwasher according to the first and second inventions, the upper lid is in a state of waiting in the upper space in the main body by the urging force of the upper lid holding means in a state where the washing cabinet is pulled forward. Further, since the operating body is not subjected to the force from the washing cabinet, it is positioned most forward by the urging force of, for example, a spring. When the user pushes the cleaning cabinet into the main body from this state, for example, the operating body that receives the force through a protrusion formed on the side surface of the cleaning cabinet slides backward. Along with this, the driving part of the operating body gives a force to the driven part of the movable member, and this force acts to pull down the upper lid against the urging force. Due to the restriction of the moving direction, the upper lid descends substantially vertically downward, and the upper lid contacts the upper end of the washing cabinet.

  A sealing member made of an elastic member is provided on the lower surface of the upper lid or the upper end of the cleaning cabinet, but when the upper lid comes into contact with the upper end of the cleaning cabinet, the water sealing property of the sealing member is It is not functioning well. After that, when the user pushes in the washing cabinet until it is completely stored in the main body, the lower surface of the upper lid is in contact with the upper end of the washing cabinet, that is, both move slightly backward in one piece, As a result, the sealing member is crushed and a sufficient water sealing property is exhibited. Further, since the upper lid and the washing cabinet move together, sliding at the contact portion between them is avoided, and wear of the seal member can be reduced. When pulling out the cleaning chamber stored in the main body, the operating body moves forward by the biasing force as the user pulls out the cleaning chamber, and the upper lid is pulled upward by the biasing force by the upper lid holding means. As a result, the washing cabinet can be pulled out smoothly.

  As described above, in the dishwasher according to the first and second inventions, the opening and closing of the upper lid interlocked with the putting in and out of the washing cabinet is basically performed by the vertical movement, and the movement stroke in the front-rear direction is short. Therefore, it is not necessary to secure a space for the upper lid to move greatly in the front-rear direction in the main body, and accordingly, it becomes easier to secure a large size in the front-rear direction of the cleaning cabinet.

  As a typical embodiment of the dishwasher according to the second aspect of the present invention, the driven part is a first cam groove inclined obliquely upward toward the rear, and the driving part is fitted to the first cam groove. A cam follower, wherein the guide portion is a second cam groove having a substantially square shape extending in a vertical direction and extending rearward from a lower end thereof, and the guided portion is a second cam follower fitted in the second cam groove. There can be a certain configuration.

  According to this configuration, both of the transmission of force between the driving part of the operating body and the driven part of the movable member and the regulation of the moving direction by the guide part of the fixed member and the guided part of the movable member are both. This is achieved by a cam mechanism comprising a cam groove and a cam follower. The cam follower is a simple roller bearing, and the cam groove only needs to have a predetermined shape in the cam plate. Therefore, the structure is simpler and the cost can be reduced compared to a parallel link mechanism. it can.

  In the above configuration, when the first cam follower reaches the rearmost end of the first cam groove in the process of moving the operating body rearward, the second cam follower moves further rearward along the second cam groove. What is necessary is just to set it as the structure by which the shape of the 1st and 2nd cam groove via the 1st and 2nd cam follower is defined so that it is possible.

  According to this configuration, when the user pushes the cleaning chamber into the main body and the first cam follower in the operating body reaches the rearmost end of the first cam groove in the movable member, the operating body covers the upper lid via the movable member. Since the second cam follower can be moved rearward along the second cam groove at that time, the cleaning cabinet and the upper lid are integrally moved rearward. Thus, by simply determining the shape of the cam groove, the front and rear strokes of the cleaning chamber and the upper lid for pressing the seal member can be set, and the structure can be simplified.

  In the dishwasher according to the second aspect of the present invention, two fixed members and two movable members are provided on the inner surfaces of both side walls of the main body and on both side surfaces of the upper lid in the front-rear direction, respectively, and the operating body is the casing. It is good to set it as the structure arrange | positioned 1 each on the inner surface of both side walls.

  According to this configuration, a total of four members for moving the upper lid up and down are provided on the left and right side walls of the main body and separated in the front-rear direction, so that the upper lid moves up and down smoothly while maintaining a substantially horizontal state. Thereby, obstruction | occlusion of the washing | cleaning warehouse upper surface opening by an upper cover can be performed reliably, and the water-sealing property of the contact part can be ensured over a perimeter. In addition, since an excessive load is not easily applied to a part, the failure of the upper lid opening / closing mechanism is reduced, leading to an improvement in reliability.

  Further, if the fixing member also serves as a holding portion that holds the operating body so as to be movable in the front-rear direction, the number of parts is reduced, which contributes to further cost reduction.

A third invention made to achieve the second object is a main body including a substantially rectangular housing having an open front surface, and is capable of being drawn forward from the main body and for taking in and out tableware on the upper surface. In a dishwasher comprising: a washing cabinet having an opening; and an upper lid for closing the top opening of the washing cabinet;
Both side wall surfaces of the housing are formed in a stepped shape that is recessed inwardly on the lower side from the upper side, and the first slide rail extending in the front-rear direction is fixed to the inner surface of the recessed portion so as to protrude inwardly. And a second slide rail extending in the front-rear direction that is slidable with respect to the first slide rail is fixed to a portion located inward of the side surface at the lower end of both side surfaces of the cleaning cabinet. It is a feature.

  In the dishwasher according to the third aspect of the present invention, the side walls of the housing are formed in a step shape that is recessed inwardly on the lower side than the upper side, so that the upper side is between the side surface of the washing cabinet and the inner surface of the side wall of the housing. A sufficient space is secured, and on the lower side, the gap between the side surface of the cleaning cabinet and the inner surface of the side wall of the housing is narrowed. Then, by sliding between the first slide rail protruding into the narrow gap and the second slide rail provided at the lower end of the side surface of the cleaning cabinet, the cleaning cabinet slides smoothly in the front-rear direction while maintaining a substantially horizontal state. Like to do. Note that the first slide rail and the second slide rail are not necessarily directly engaged, and may be configured to be slidable via, for example, the third slide rail.

  According to the dishwasher according to the third aspect of the present invention, since the amount of protrusion of the first slide rail inward can be reduced, it is easy to ensure the strength of the first slide rail. Thereby, for example, in order to increase the strength of the first slide rail, it is not necessary to increase the thickness of the first slide rail or to add a reinforcing member, so that the cost can be reduced. In general, this type of slide rail mechanism is widely used not only in a pull-out dishwasher but also in a pull-out storage of a refrigerator, for example. According to the dishwasher according to the second aspect of the invention, the slide rail mechanism having such a standard specification can be easily used, which is also effective in reducing the cost.

  Moreover, as one embodiment of the dishwasher according to the third aspect of the present invention, there is a □ -shaped portion having a recessed portion opened downward or a notched portion extending in the front-rear direction at the lower side of the both sides of the washing cabinet. The formed second slide rail can be configured to be accommodated in the concave portion or the square portion.

  According to this configuration, even when the cleaning cabinet is pulled forward, the second slide rail is hardly exposed on the side surface of the cleaning cabinet, and it is difficult for water to splash on the second slide rail or for dust or dust to adhere to it. Become. Thereby, the durability of the slide rail mechanism can be enhanced, and smooth removal and insertion of the washing cabinet can be ensured over a long period of time.

  In the dishwasher according to the third aspect of the present invention, a space between both side surfaces of the washing cabinet and the inner surfaces of both side walls of the main body when the washing cabinet is stored in the main body, the side wall surface of the housing It is possible to adopt a configuration in which an upper lid opening / closing mechanism for moving the upper lid up and down as the washing cabinet is pulled out / inserted is provided in a portion where the cleaning chamber is not recessed.

  That is, by arranging the upper lid opening / closing mechanism in the space on the side of the cleaning cabinet and the upper lid formed by devising the shape of the casing as described above, the inner space of the casing can be used effectively. Thereby, especially the vertical size of the washing cabinet can be increased, and it is easy to deal with a large-diameter dish or the like generally stored in a standing state in the washing cabinet.

  In the dishwasher according to the third aspect of the present invention, the casing includes at least a side bottom member having a substantially U-shaped front sectional view forming both side surfaces and a bottom surface, a top surface member forming the top surface, and a back surface forming the back surface. These members can be configured to be joined by screws.

  The above-described members can be joined by spot welding or the like. However, particularly when working manually, the strength of the welded portion tends to vary depending on the experience and skill of the operator. On the other hand, in the joining with screws, such variation can be reduced and the reliability can be improved.

The fourth invention made to achieve the third object is to suck in the water stored in the water storage part of the cleaning room in which the dishes are stored and the water storage part is stored at the bottom. Water injection means for injecting the cleaning chamber, an air trap chamber communicating with the water storage section through a communication port, a pressure sensor for detecting air pressure in the air trap chamber, and the air trap chamber and the pressure sensor; In a dishwasher comprising a water level detection means including a pressure hose connecting
The air trap chamber is formed integrally with the cleaning chamber so that a gap is formed between the upper wall and the wall surface of the cleaning chamber, and extends obliquely upward from the side wall surface of the air trap chamber. The connecting hose has a connecting pipe part having a larger inner diameter than the pressure hose, and one end of the pressure hose is connected to the peripheral wall surface of the connecting pipe part.

  In the dishwasher according to the fourth aspect of the present invention, since a gap is formed between the upper wall of the air trap chamber and the wall surface of the washing cabinet, the air outside the washing cabinet enters. Thus, the temperature in the air trap chamber is less affected by the temperature in the washing cabinet (water temperature or air temperature). For this reason, it is possible to prevent the occurrence of condensation in the air trap chamber. Even if dew condensation occurs in the air trap chamber, the dew condensation water adheres to the inner wall of the connecting pipe portion having a large inner diameter, and flows down along the inclination to return to the air trap chamber. For this reason, it is possible to avoid a situation in which condensed water is clogged inside the pressure hose having an inner diameter smaller than that of the connecting pipe portion and the water level cannot be detected.

  As an embodiment of the dishwasher according to the fourth aspect of the present invention, the washing cabinet has an opening for taking in and out dishes on the upper surface, and can be pulled out from a main body including a substantially rectangular housing having an open front surface. Thus, an exhaust port is formed on the front wall surface of the cleaning chamber to communicate the interior of the cleaning chamber with the outside of the machine, and the water sprayed by the water spraying means is prevented from being directly applied to the exhaust port at the exhaust port. For this purpose, a cover having an open bottom surface can be provided.

  In this configuration, the exhaust port cover provided at the exhaust port prevents water sprayed from the water spraying means from directly splashing on the exhaust port when cleaning or rinsing the dishes stored in the cleaning cabinet. In addition, it is possible to reduce the splashing water hitting the inner surface of the dishes and the washing cabinet and splashing on the exhaust port. Therefore, it is possible to avoid water splashing outside the apparatus through the exhaust port.

According to a fifth aspect of the present invention, there is provided a main body including a housing having a front surface opened and having a plurality of legs at the bottom of the bottom wall, and a wash cabinet that can be drawn forward from the main body. In a dishwasher comprising: a forward slip prevention unit that is mounted on an installation table for installing the main body and prevents the main body itself from moving forward during a drawer operation of a washing cabinet;
The main body is provided on the installation table at a position that does not interfere with the front shift prevention part in the front-rear direction, and contacts the bottom wall surface of the main body when the main body is pushed in to install on the installation table. It is characterized by comprising an installation guide section for regulating the posture of the main body so that at least a part of the main body is lifted from the mounting table.

  In the dishwasher according to the fifth aspect of the present invention, the rear end side is placed on the installation table and pushed in such a manner that the dishwasher body is built-in on the installation table in the storage cabinet of the system kitchen. Although it is gradually housed, the posture is regulated so that the guide part at the time of installation comes into contact with the bottom wall surface of the main body and the main body is slightly lifted in the vicinity of the guide part at the time of installation. Thereby, the position of the leg part at the bottom of the main body becomes a relatively high position, and the leg part is less likely to contact the forward shift prevention part. Therefore, even when the leg portion is made of a material that is relatively easily damaged, such as a resin, it is possible to prevent the damage due to the contact with the front shift prevention portion.

  In addition, if the guide part at the time of installation is provided on the same member as the forward shift prevention part and the member is fixed to the installation base, the cost of the member can be reduced, and the labor required for installation can be reduced.

  According to the dishwasher according to the first and second inventions, although it is a simple and inexpensive structure compared to a parallel link mechanism or the like, it is wasted in the main body by shortening the stroke of the front and rear movement when opening and closing the upper lid. It is difficult to form a large space, and sufficient water-sealing property can be secured when the upper lid is closed.

  According to the dishwasher according to the third aspect of the invention, the load applied to the slide rail for performing the slide movement of the washing cabinet can be reduced to ensure smooth loading and unloading of the washing cabinet, and the cost for the slide rail itself and its reinforcement can be reduced. Can be reduced.

  According to the dishwasher according to the fourth aspect of the present invention, it is possible to prevent the pressure hose from being blocked by dew condensation in the air trap chamber, and to always reliably detect the water level in the washing cabinet.

  According to the dishwasher which concerns on 5th invention, the damage of the leg part at the time of installing a dishwasher main body built-in can be prevented, and it can avoid that a useless cost starts.

  A dishwasher according to an embodiment of the first to fifth inventions will be described below with reference to the drawings. FIG. 1 is a schematic side cross-sectional view of the main part of the dishwasher according to the present embodiment in a state where the washing cabinet is housed in the main body, and FIG. Sectional drawing, FIG. 3 is a schematic side sectional view of the main part in a state in which the tableware is housed in the washing cabinet, FIG. 4 is a partial longitudinal sectional view when viewed from the back side in the dishwasher according to the present embodiment, FIG. 5 is a rear plan view of the dishwasher according to the present embodiment.

  First, the whole structure of the dishwasher of a present Example is roughly demonstrated with FIGS. A main body 1 including a substantially rectangular casing that forms an exterior has a large front opening 2 on the front surface thereof, and a washing cabinet 3 having an upper surface opening 4 inside the main body 1 is moved forward and backward by a slide rail mechanism 6 described later. It is slidably arranged. A table bowl 9 for aligning and storing tableware is detachably installed inside the washing cabinet 3. The tableware bowl 9 has a two-stage upper and lower structure, and the lower bowl 9a stores general dishes such as dishes and tea bowls, and the upper bowl 9b is placed with a cup or a teacup lying down. It is like that. FIG. 3 shows a state where the cup G is placed on the upper ledge 9b. The washing cabinet 3 is integrated with a door 5 that also serves as a front plate for closing the front opening 2 of the main body 1. When the washing cabinet 3 is completely stored in the main body 1 as shown in FIG. The front opening 2 is completely closed by a door 5.

  A casing 100 forming the exterior of the main body 1 includes a substantially U-shaped bottom side surface member 101 formed by bending a sheet metal so as to cover both side wall surfaces and the bottom surface, and a bottom surface so as to cover the top surface. The top surface member 103 is fixed to the side member 101, the back member 102 is fixed to the bottom side member 101 so as to cover the back surface, and the flange frame 104 is formed with the front opening 2. The side surface has a stepped shape that is bent so as to be recessed inwardly on the lower side than on the upper side (this portion is referred to as a recessed portion 101a). The back member 102 is attached to the bottom side member 101 by screwing using a plurality of screws 109 instead of spot welding as shown in FIG. Thereby, the dispersion | variation in the intensity | strength of the junction part by the skill and experience of the operator at the time of an assembly can be made small, and quality can be stabilized.

  An upper lid 7 for closing the upper surface opening 4 of the cleaning chamber 3 is disposed in the upper space formed between the upper surface opening 4 and the top surface member 103 when the cleaning chamber 3 is stored in the main body 1. It is arranged. The upper lid 7 is moved up and down in conjunction with a drawer / push-in operation of the cleaning cabinet 3 by an upper lid opening / closing mechanism which will be described later. When the cleaning cabinet 3 is completely stored in the main body 1, The packing 8 as a sealing member attached to the upper surface of the cleaning cabinet 3 is in close contact with the upper end of the side wall of the cleaning cabinet 3 so as to close the upper surface opening 4 of the cleaning cabinet 3 with a high water-sealing property. Sealed. On the other hand, when the washing cabinet 3 is pulled forward from the main body 1, the upper lid 7 is retracted to a position slightly above and ahead of the closed position as shown in FIG.

  In the center of the bottom of the washing cabinet 3, a plurality of water injection holes 10a are formed on the upper surface, and a rotatable arm nozzle (water injection means) 10 having a water passage inside is integrated with the water nozzle 10a. A tower nozzle 20 (water injection means) having a water injection hole 20a is disposed so as to be rotatable about a vertical axis. In addition, an extendable water supply pipe 11 having a water supply valve (not shown) is connected to the rear wall surface of the washing cabinet 3. When the water supply valve is opened, water supplied from an external water tap is washed through the water supply pipe 11. It is poured into the storage 3. A concave water reservoir 12 is formed at the bottom of the washing cabinet 3, and a washing and draining pump 13 is attached below the bottom wall of the washing cabinet 3. When the washing and draining pump 13 is operated as a washing pump in a state where water is stored in the bottom of the washing cabinet 3, the water sucked from the water storage unit 12 is pumped to the arm nozzle 10 and the tower nozzle 20 to be injected with water. Water is ejected vigorously into the cleaning cabinet 3 from the holes 10a, 20a. And the arm nozzle 10 and the tower nozzle 20 rotate in a predetermined direction by the momentum of this water injection. As a result, the tableware stored in the washing cabinet 3 is evenly splashed with water and the dirt is removed. The arm nozzle 10 mainly applies water to the tableware stored in the lower plate 9a of the tableware bowl 9, while the tower nozzle 20 mainly supplies water to the tableware such as the cup G stored in the upper plate 9b of the tableware bowl 9. It is for guessing.

  On the other hand, when the washing / drainage pump 13 is driven as a drainage pump by rotating in the opposite direction to the above-described washing pump operation in a state where water is stored in the bottom of the washing cabinet 3, suction is performed from the water storage unit 12. The discharged water is pumped to the drain pipe 14. The drain pipe 14 is connected to the back member 102 on the back surface of the main body 1, and the drainage is discharged out of the machine by a drain hose 16 connected through a drain joint 15 attached thereto. As shown in FIG. 5, the drainage joint 15 is provided with a hose band 17 for tightening the drainage hose 16, and the drainage joint 15 is connected to the drainage pipe 14 in the connecting direction axis (a substantially horizontal axis extending in the front-rear direction). ) Around the center. Since the drainage joint 15 is pivotable in this way, the drainage hose 16 itself bends substantially the same regardless of whether the drainage hose 16 is pulled rightward or leftward, and an unreasonable load is applied to the drainage hose 16. It doesn't take. Therefore, the drainage hose 16 is not easily deteriorated, and the flow of drainage is always smooth. In addition, the time and labor required for the construction of the dishwasher can be reduced.

  16 is a rear plan view showing an embodiment in which a drainage joint 15a having another structure is used instead of the rotatable drainage joint 15 shown in FIG. 5, and FIG. When pulling out in the direction, (b) is an example of pulling out the drain hose in the left direction. The drainage joint 15a is a substantially L-shaped cylinder, and is attached to the back member 102 by being inclined so that the connection portion with the drainage hose 16 is inclined upward, and in FIG. It has been. With this configuration, the drainage hose 16 is bound to the water supply hose 25, the power cord 26, the ground wire 27, and the like that are also drawn from the back surface in the direction in which the drainage joint 15a is inclined, that is, the direction shown in FIG. When the drain hose 16 is bent, the drain hose 16 is hardly burdened. Further, when the drainage hose 16 is pulled out in the direction opposite to the direction in which the drainage joint 15a is inclined, that is, in the direction shown in FIG. Since the connecting portion faces obliquely upward, the drainage hose 16 is bent without difficulty, and the stress applied to the drainage hose 16 can be reduced. When the drainage hose 16 is disposed as shown in FIG. 16B, the drainage hose 16 that is largely bent is subjected to a force to return straight due to its rigidity. This force is received by fixing.

  Although not shown here, the rear portion of the main body 1 is provided with a blower mechanism including a blower fan for performing a drying operation. By this blower mechanism, outside air is fed into the cleaning cabinet 3 for cleaning. Tableware is dried by air heated by a heater (not shown) broken in the cabinet 3.

  Further, in order to discharge the air in the washing cabinet 3 containing a large amount of water vapor to the outside during the drying operation, an exhaust that communicates the outside of the door 5 and the internal space of the washing cabinet 3 is provided at the upper part of the front wall of the washing cabinet 3. A path 18 is formed. An exhaust port cover 19 whose bottom is opened is detachably attached to the opening 18a on the side of the cleaning cabinet 3 of the exhaust path 18 so that the water sprayed from the water spray holes 10a and 20a is not directly applied thereto. This prevents water from splashing out of the machine through the exhaust passage 18 during the cleaning operation and the rinsing operation, and allows good exhaust during the drying operation.

  Next, the configuration and operation of the upper lid opening / closing mechanism, which is one of the features of the dishwasher of this embodiment, will be described in detail.

  A pair of left and right upper lid holding and fixing pieces 31 are attached to the upper ends of the inner surfaces of the both side walls of the main body 1 so as to extend downward. The vicinity is held rotatably about the horizontal axis 31a. Further, a tension coil spring having one end connected to the end of the first arm 30a of the arm member 30 extending downward from the horizontal shaft 31a and the other end connected to the inner surface of the side wall of the housing 100 at a position ahead of the first arm 30a. 32 is stretched substantially horizontally. On the other hand, a screw 33 fixed to the side surface of the upper lid 7 is slidably engaged with a long hole 30c provided at the end of the second arm 30b of the arm member 30 extending forward from the horizontal shaft 31a. Yes. Thus, when no other external force is applied to the upper lid 7, the first arm 30a of the arm member 30 is pulled forward by the contraction force of the tension coil spring 32, and the upper lid 7 is moved upward via the second arm 30b. Has been lifted. These are upper lid holding means for holding the upper lid 7 in the upper space in the main body 1.

  In order to close the upper surface opening 4 of the cleaning chamber 3 by lowering the upper lid 7 against the contraction force of the tension coil spring 32 as described above, a mechanism mainly composed of four members is used. This point will be described with reference to FIG. 6 in addition to FIGS. FIG. 6 is a side view for explaining the configuration and operation of the main part of the upper lid opening / closing mechanism. In FIG. 6, as in FIGS. 1 and 2, the left side is the front of the main body, that is, the direction in which the cleaning cabinet 3 is pulled out.

  That is, the metal first guide members (movable members in the present invention) 40 are attached to both side surfaces of the upper lid 7 at positions separated in the front-rear direction. The first guide member 40 has a cam groove (driven part) 40a that is inclined forward and inclined at the lower part, and a cam follower (guide part) 40b that is rotatable in a cylindrical shape is attached to the upper part thereof. The upper edge is fixed to the upper lid 7 with two screws.

  Resin second guide members (fixing members in the present invention) 41 are attached to the inner surfaces of both side walls of the housing 100 at horizontal positions separated in the front-rear direction. The second guide member 41 includes an operating body holding portion 41a that holds an operating body 42, which will be described later, so as to be slidable in the front-rear direction, a window portion 41b in which a cam follower provided on the operating body 42 is slidably exposed, It has the 1st guide member holding | maintenance part 41c which hold | maintains the 1 guide member 40 to an up-down direction and the front-back direction, and the cam groove 41d by which the cam follower 40b of the 1st guide member 40 is fitted. The cam groove 41d has a substantially square shape in which a groove extending in the vertical direction and a groove extending from the lower end to the rear side are connected, and the upper lid 7 moves further rearward together with the cleaning cabinet 3 due to the shape. 7 has a function of guiding the cam follower 40b so as to move it downward.

  One operating body 42 made of an elongated resin is slidably held back and forth in the operating body holding portions 41a of the two second guide members 41 provided apart in the front-rear direction. A cylindrical cam follower 42a is attached to the front end and the rear end of the operating body 42, and each cam follower 42a is viewed from the window 41b of the second guide member 41, and the front edge of the window 41b. The slidable range in the front-rear direction of the operating body 42 is determined by the cam follower 42a coming into contact with the portion and the rear edge portion. Further, the front end portion of the operating body 42 is provided with an abutting portion 42b that abuts against a protruding portion 3a formed on the front surface of the both side walls of the cleaning cabinet 3. Further, a tension coil spring 43 having one end connected to the spring mounting portion 42c of the operating body 42 and the other end connected to the inner surface of the side wall of the housing 100 at a front position from the spring mounting portion 42c is substantially extended so as to extend in the front-rear direction. It is stretched horizontally. The operating body 42 is urged forward by the contraction force of the tension coil spring 43.

  The operation | movement by the mutual relationship of the 1st guide member 40, the 2nd guide member 41, the action body 42, and the tension coil spring 43 is demonstrated. As shown in FIG. 2, when the cleaning chamber 3 is pulled forward, the operating body 42 that does not receive a force from the cleaning chamber 3 lifts the upper lid 7 through the arm member 30 by the contraction force of the tension coil spring 32. In cooperation with the tension coil spring 43, it is located at the foremost position in a range that can be moved by the contraction force of the tension coil spring 43 (see FIG. 6A). The cam follower 42a of the operating body 42 is fitted in the linear cam groove 40a of the first guide member 40, and at this time, the cam follower 42a is positioned at the foremost end of the cam groove 40a. Although the tension coil spring 32 and the tension coil spring 43 are different in the parts to be operated (the arm member 30 is equivalent to the tension coil spring 32 and the operating body 42 is equivalent to the tension coil spring 43), the upper lid 7 is finally lifted upward. Thus, the other tension coil springs can be eliminated by increasing the contraction force of one of the tension coil springs.

  On the other hand, the cam follower 40b of the first guide member 40 is fitted into the dog-shaped cam groove 41d of the second guide member 41. At this time, the cam follower 40b is located at the uppermost end of the cam groove 41d. As a result, the upper lid 7 is positioned at the uppermost position within a possible range by fitting the cam follower 40b and the cam groove 41d and fitting the cam follower 42a and the cam groove 40a.

  When the user pushes the cleaning chamber 3 into the main body 1 from the above state, the protrusion 3a of the cleaning chamber 3 hits the contact portion 42b of the operating body 42 at a certain position, and the cleaning chamber 3 is further pressed. The operating body 42 starts to slide backward against the contraction force of the tension coil spring 43. Along with this movement, the cam follower 42a moves obliquely upward in the cam groove 40a. Therefore, the cam follower 42a exerts a force that pulls down the first guide member 40, that is, the upper lid 7, against the cam groove 40a. On the other hand, since the cam follower 40b can be moved only substantially vertically downward by restriction by the cam groove 41d at the beginning, the upper lid 7 receiving the above-described pulling force is lowered substantially vertically downward.

  That is, the upper lid 7 moves down with almost no movement in the front-rear direction. The packing 8 on the lower surface of the upper lid 7 comes into contact with the upper edge of the cleaning cabinet 3 in the vicinity where the cam follower 40b reaches the bent portion of the dogleg of the cam groove 41d (see FIG. 6B). However, at this time, the packing 8 is hardly crushed and the water sealability is not exhibited.

  When the cleaning chamber 3 is further pushed into the main body 1, the movement of the cam follower 40b is slightly lowered while turning backward according to the shape of the cam groove 41d. At this time, the upper lid 7 is pressed against the upper portion of the cleaning chamber 3 and the packing 8 Is crushed. When the cam follower 42a reaches the rear end of the cam groove 40a and is prevented from moving further, the other cam follower 40b has not yet reached the rear end of the cam groove 41d and has a margin to move further to the rear side. Is provided. Therefore, the operating body 42 that is pushed as the cleaning chamber 3 is pushed pushes the first guide member 40, that is, the upper lid 7 backward through the fitting of the cam follower 42a and the cam groove 40a (see FIG. 6C). . At this time, the cam groove 41d guides the cam follower 40b so that the upper lid 7 moves further downward while the upper lid 7 moves backward together with the cleaning cabinet 3.

  Accordingly, when the cleaning chamber 3 is pushed last, the upper lid 7 is slightly lowered so as to be in close contact with the upper end of the cleaning chamber 3, and the upper lid 7 and the cleaning chamber 3 are moved backward by a small distance together. Thereby, the packing 8 of the upper lid 7 is crushed substantially uniformly over the entire circumference, and the water sealability is further improved. Further, if only the cleaning cabinet 3 moves while the position of the upper lid 7 is fixed, an excessive load is applied to the packing 8 and the wear is large, but the packing is moved by the cleaning cabinet 3 and the upper lid 7 moving together. It is difficult for an excessive load to be applied to 8, and deterioration with time of the packing 8 can be reduced. In this manner, as shown in FIG. 1, the washing cabinet 3 is completely stored in the main body 1, and at that time, the upper lid 7 closes the upper surface opening 4 of the washing cabinet 3 with high water sealing.

  When the user performs an operation of pulling out the cleaning cabinet 3 stored in the main body 1, the operating body 42 is moved by the contraction force of the tension coil spring 43 as the protrusion 3 a of the cleaning cabinet 3 moves forward. Slide forward. Then, as the cam follower 42a moves forward in the cam groove 40a, the cam follower 40b moves along the cam groove 41d and the upper lid 7 moves slightly forward. When the cam follower 40b passes through the bent portion of the dog-shaped cam groove 41d, the upper lid 7 is pulled up almost vertically through the arm member 30 by the contraction force of the tension coil spring 32, and the upper surface opening 4 of the cleaning cabinet 3 is pulled. To release. Then, as shown in FIG. 2, the upper lid 7 stands by in the upper space in the main body 1, and only the cleaning cabinet 3 is pulled forward, and the tableware can be taken in and out through the upper surface opening 4.

  As described above, in the dishwasher according to the present embodiment, the upper lid 7 is moved up and down in a substantially vertical direction, and the movement in the front-rear direction is a slight distance for enhancing the adhesion between the two together with the washing cabinet 3. . Therefore, it is not necessary to secure a wide space for the upper lid 7 to move in the front-rear direction. Further, since the upper lid 7 moves up and down by the urging force of the tension coil spring 32 stretched substantially horizontally via the arm member 30, the upper lid 7 is made to be the main body 1 as compared with the configuration in which the upper lid 7 is directly pulled up by the coil spring. It can be moved up and down at a position close to the top surface. Therefore, the height of the cleaning cabinet 3 can be increased.

  In addition, the cam followers 40b and 42a may have a simple structure in which an outer ring made of a resin having a high slidability is fitted on the outer side of, for example, a metal cylindrical or columnar inner ring, and the cam grooves 40a and 41d are sufficient. Is an opening of a predetermined shape. Therefore, the structure is simpler and the cost is lower than that of a parallel link mechanism or the like, and failure is less likely to occur.

  Next, the structure of the packing 8 that ensures water sealing when the upper lid 7 is closed as described above will be described with reference to FIG. FIG. 7 is a detailed sectional view showing a mounting structure of the packing 8.

  A fitting groove 7b that opens downward is formed on the peripheral edge of the upper lid 7, and a drooping piece 7a that protrudes downward is provided around the inside. The packing 8 includes a water-sealing portion 8a that is substantially cylindrical when no force is applied from the outside, a fitting portion 8b that extends from the water-sealing portion 8a and has a plurality of retaining ribs, and a fitting portion This is a member made of an elastic body such as silicone, in which a stepped portion 8c formed at the base of 8b and a protruding portion 8d protruding on the opposite side to the stepped portion 8c are integrally formed. By pressing the fitting portion 8b of the packing 8 into the fitting groove 7b, the packing 8 is attached to the upper lid 7, but the step portion 8c is fitted to the outer corner of the fitting groove 7b, while the overhanging portion 8d. Is fitted to the step between the inner corner of the fitting groove 7b and the hanging piece 7a. Thereby, the base of the fitting part 8b does not wobble, and the position of the water seal part 8a of the packing 8 is stabilized.

  When the upper lid 7 is lowered so as to close the upper surface opening 4 of the cleaning cabinet 3 as described above, the lower surface of the water seal portion 8a of the packing 8 is outwardly exposed to the upper end of the standing wall surface of the cleaning cabinet 3 as shown in FIG. The flange 3b overhangs and is crushed to increase the adhesion. At this time, there is a drooping piece 7a inside the packing 8, and the shape of the flange 3b is also bent in two stages, so that the water jetted from the water jet holes 10a and 20a in the washing chamber 3 It is difficult to get caught on the water seal 8 a of the packing 8. Further, water that has entered from the gap between the lower end of the drooping piece 7a and the flange 3b is prevented from entering the fitting groove 7b by the overhanging portion 8d. When water containing detergent enters the fitting groove 7b, the packing 8 is easily removed from the fitting groove 7b. According to this configuration, the entry of water into the fitting groove 7b is prevented as described above. Therefore, it is effective to prevent the packing 8 from coming off.

  Next, the slide rail mechanism 6 when the washing cabinet 3 is taken in and out of the main body 1 will be described in detail with reference to FIG. FIG. 8 is a detailed sectional view showing the configuration of the slide rail mechanism 6.

  This slide rail mechanism 6 is a standard one used in a drawer-type storage for a refrigerator as well as a drawer-type dishwasher, and is a fixed-side rail fixed to the inner surfaces of both side walls of the casing 100 (the present invention). First slide rail) 61, movable side rail (second slide rail 62 in the present invention) 62 attached to the inside of the lower ends of both side walls of washing cabinet 3, fixed side rail 61, and movable side rail 62, respectively. A three-stage rail structure including the engaged intermediate rail 63 is formed. Sliding bodies 64 such as ball bearings are interposed between the fixed side rail 61 and the intermediate rail 63 and between the fixed side rail 61 and the intermediate rail 63.

  More specifically, as described above, the bottom side surface member 101 constituting both side walls of the housing 100 is formed with a recess 101a, and the side wall surface of the cleaning cabinet 3 is slightly opened so as to open outward at the top. Although it is formed in an inclined shape, it is almost upright, so that the gap between the side wall surface of the casing 100 and the side surface of the cleaning cabinet 3 is wide on the upper side, and this gap is narrow at the position of the recess 101a. Yes. A member constituting the upper lid opening / closing mechanism as described above is disposed in the upper wide gap portion, while the fixed-side rail 61 is attached to the recess 101a.

  A recess 3c opened downward is formed inside the lower end of the side wall of the cleaning cabinet 3, and a bottom cover 301 for covering the pump 13 and the like provided in the lower portion of the cleaning cabinet 3 extends to the bottom of the recess 3c. A rail housing portion 302 is formed so that the side surface is elongated in the front-rear direction between the recess 3c and the recess 3c. The movable-side rail 62 is attached to the recess 3c, and the sliding portion 61a of the fixed-side rail 61 enters inward from the opening 303 of the rail storage portion 302 and is movable in the rail storage portion 302 via the intermediate rail 63. The sliding portion 62a of the side rail 62 is engaged. Therefore, the slide rail mechanism 6 is configured to support the washing chamber 3 that is a heavy object from below, and the horizontal protruding portion 61b from the side wall surface of the housing 100 that supports the sliding portion 61a of the stationary rail 61 is supported. Since the width is short, it is easy to ensure strength. Further, the sliding parts (sliding parts 61a and 62b, intermediate rail 63, and sliding body 64) of the slide rail mechanism 6 are entirely accommodated in the rail housing part 302, so that dust and the like are not easily attached thereto. Furthermore, since the slide rail mechanism having a standard shape used for various applications as described above can be used, the cost can be reduced.

  As shown in FIG. 1, the sliding part 62 a of the movable side rail 62 and the sliding part 61 a of the fixed side rail 61 overlap with each other via the intermediate rail 63 in a state where the cleaning cabinet 3 is accommodated in the main body 1. When the user pulls out the washing cabinet 3 forward, first, the movable rail 62 that moves integrally with the washing cabinet 3 slides with respect to the intermediate rail 63 by the action of the sliding body 64, and the washing cabinet 3 is pulled out by a predetermined drawer. When the position is reached, the rear end of the movable rail 62 and the front end of the intermediate rail 63 are engaged with each other in a state where they overlap each other by a predetermined length. To do. Thus, in the state in which the cleaning cabinet 3 is pulled out to the maximum, the rear end of the intermediate rail 63 overlaps the front end of the fixed side rail 61 by a predetermined length, and the rear end of the movable side rail 62 is intermediate. The front end of the rail 63 overlaps with a predetermined length. In this way, the washing cabinet 3 can be smoothly put in and out of the main body 1.

  Next, the structure of a water level sensor for detecting the amount of water stored in the washing cabinet 3, that is, the water level in the dishwasher of this embodiment will be described with reference to FIG. FIG. 9 is a longitudinal sectional view of the vicinity of the air trap chamber constituting the water level sensor.

  A box-shaped air trap chamber 70 is formed integrally with the cleaning chamber 3 so as to communicate with the inside of the cleaning chamber 3 only through the communication port 71 at the front center of the cleaning chamber 3. However, a gap 73 is intentionally formed between the upper wall surface of the air trap chamber 70 and the wall surface of the cleaning chamber 3 above the air trap chamber 70, and air outside the cleaning chamber 3 can enter and leave the gap 73. . A cylindrical buffer pipe 74 with a closed end is communicated with the inside of the air trap chamber 70 on the standing wall surface on the opposite side of the communication port 71 of the air trap chamber 70, and as it goes from the communicating portion toward the end. It is connected so as to incline upward. Then, the other end of the pressure hose 75 whose one end is connected to a pressure sensor (not shown) is connected to the upper surface of the buffer pipe line 74 near the closed end surface. The inner diameter of the buffer pipe line 74 is larger than the inner diameter of the pressure hose 75, and the distance between the connection part of the pressure hose 75 to the buffer pipe line 74 and the connection part of the buffer pipe line 74 to the air trap chamber 70 becomes longer. Yes.

  When water is supplied into the cleaning chamber 3, water flows into the air trap chamber 70 through the communication port 71, and when water accumulates to a height that closes the communication port 71 as indicated by a one-dot chain line in FIG. The air remaining in the chamber 70 is sealed, and when the water level rises, the space in the air trap chamber 70 is reduced and the air pressure is increased. A pressure sensor detects this pressure change via the pressure hose 75, and can detect a water level by converting this pressure detection value into a water level. When hot water is stored in the washing cabinet 3 and the humidity in the washing cabinet 3 is high and cold water is supplied into the washing cabinet 3 in the next step, the water vapor in the washing cabinet 3 is rapidly cooled. Dew condensation. The partition wall that separates the air trap chamber 70 from the inside of the cleaning cabinet 3 is also easily affected by temperature changes in the cleaning cabinet 3, but the upper wall surface of the air trap chamber 70 is not directly the wall surface of the cleaning cabinet 3, Due to the gap 73, the temperature in the air trap chamber 70 is relatively less affected by the temperature change in the cleaning chamber 3. Therefore, in the air trap chamber 70, condensation is less likely to occur as in the cleaning cabinet 3.

  In addition, when condensation occurs in the air trap chamber 70, part of the condensation occurs in the buffer pipe 74 and water drops adhere to the inner wall surface. However, the buffer pipe 74 faces the air trap chamber 70. Therefore, the water droplets grown to a certain size flow along the inclination and return into the air trap chamber 70. Therefore, the amount of water adhering to the inner wall of the buffer pipe 74 does not increase more than a certain amount. Further, since the inner diameter of the buffer pipe 74 is larger than the inner diameter of the pressure hose 75, the buffer pipe 74 itself is not blocked by the condensed water. Therefore, even if condensation occurs, it is possible to prevent the air flow path from the air trap chamber 70 to the pressure sensor from being blocked, and always perform reliable water level detection.

  Next, the attachment structure of the arm nozzle 10 and the tower nozzle 20 in the dishwasher of a present Example is demonstrated. FIG. 14 is an assembly view in a state where the inside of the cleaning cabinet 3 is looked into, and FIG. 15 is a front longitudinal sectional view (a) of the main part at the center position of the tower nozzle 20 and an enlarged sectional view (b) of the A part. is there.

  A water discharge port 21 of the cleaning pump chamber of the cleaning / drainage pump 13 opens upward on the bottom surface of the cleaning chamber 3. That is, when the washing and draining pump 13 operates as a washing pump, water is pumped upward from below the water discharge port 21 and blown up. At the center of the water discharge port 21, a boss 21 a supported by a plurality of ribs erected so as not to block the flow of water is provided. A water flow restricting member 22 is attached to the water discharge port 21, and a member in which the arm nozzle 10 and the tower nozzle 20 are further integrated thereon is covered so as to be rotatable around a vertical axis. Has been.

  The water flow regulating member 22 has a substantially horizontal flat plate portion 22c supported by a plurality of ribs 22a erected so as to have a wide opening 22b in a substantially horizontal direction, and a pair of water is provided on the upper surface of the flat plate portion 22c. A guide piece 22d is provided upright. A screw hole is formed in the center of the flat plate portion 22c. As shown in FIG. 15B, the water flow restricting member 22 is attached to the water discharge port 21, and the screw inserted through the screw hole from above is used as the screw hole of the boss 21a. The water flow restricting member 22 is fixed to the water outlet 21 by screwing. When the washing and draining pump 13 operates as a washing pump, water spouts from the spout 21 as described above. However, since the flat plate portion 22c of the water flow restricting member 22 is present in front of the water, In this case, the advancing direction is changed to a substantially horizontal direction and ejected from the opening 22b in a substantially horizontal direction. Thereby, since water is sent into the water passage of the arm nozzle 10 with a high water pressure, the water reaches the tip of the arm nozzle 10 sufficiently, and the water is ejected vigorously from each water injection hole 10a. On the other hand, a part of the water coming out of the opening 22b turns upward, rises in the water passage of the tower nozzle 20 along the water guide piece 22d, and is ejected from the water injection hole 20a at the top.

  In the conventional configuration, the water flow regulating member has an opening in the upper direction, that is, in the direction of the water passage of the tower nozzle 20, so that the water spouted by the action of the washing pump does not reduce the momentum and passes through the tower nozzle 20. The water was jetted through the water channel from the top water jet hole 20a. For this reason, the momentum of the water coming out of the water injection hole 20a of the tower nozzle 20 is too strong, and the water passes through the upper ledge 9b and reaches the upper lid, and may not contribute sufficiently to the removal of dishes. When the washing and draining pump 13 starts operating as a washing pump, the water jetted from the water injection hole 20a of the tower nozzle 20 blows away tableware such as a cup placed on the upper bowl 9b of the bowl 9. There was also a risk of damaging the dishes. Furthermore, since water hits the lower surface of the upper lid 7 in the worst case, it may cause water leakage from the close contact portion between the upper lid 7 and the cleaning cabinet 3. On the other hand, since the water is not fed into the arm nozzle 10 with sufficient water pressure, the momentum of the water coming out of the water injection hole 10a of the arm nozzle 10 is weak, which is a factor in reducing the cleaning performance and the rinsing performance. On the other hand, in the dishwasher of the present embodiment, water can be ejected from the water ejection hole 10a of the arm nozzle 10 with sufficient momentum, and water can be ejected from the water ejection hole 20a of the tower nozzle 20 with excessive momentum. Therefore, it is possible to secure a water pressure that allows water to splash on the surrounding tableware, so that high cleaning performance and rinsing performance without unevenness can be exhibited. Moreover, since the tableware such as the cup G placed on the upper tray 9b is not blown off by water pressure, the tableware can be prevented from being damaged. Furthermore, since it is difficult for water to splash on the upper lid 7, water leakage can be avoided.

  Next, the structure for installing the dishwasher of a present Example in the storage cabinet of a system kitchen is demonstrated. FIG. 11 is a partially transparent front view showing the dishwasher installed in the storage cabinet, FIG. 12 is a side view showing the dishwasher installed in the storage cabinet, and FIG. The perspective view which shows a structure, FIG. 13 is a side view which shows the procedure at the time of installing this dishwasher in a storage cabinet.

  In this dishwasher, the washing cabinet 3 has a considerably large weight. Therefore, when pulling forward, a large force acts to move the main body 1 forward when the drawer ends. In addition, since the center of gravity comes forward when the washing cabinet 3 is fully pulled out, a large force acting on the main body 1 acts forward. Therefore, in order to prevent the main body 1 from moving forward and the rear part from being lifted, the main body 1 is fixed on the mounting table 200 in the storage cabinet by the following configuration. That is, in this dishwasher, a pair of left and right front fixing portions are provided inside the front side walls of the main body 1, and one rear fixing portion is provided at the center of the rear portion of the main body 1.

  Prior to the installation of the main body 1, a fall-preventing metal fitting 90 formed by bending in a substantially U-shape as shown in FIG. 12 is firmly attached with a screw at a predetermined position on the rear side of the mounting table 200. Further, as shown in FIG. 10, the front shift prevention metal fitting 91 is firmly attached to the predetermined position on the front side on the mounting table 200 with two screws 93. The front slip prevention metal fitting 91 has a main body fixing portion 91a bent in an L shape at both left and right ends, and an attachment portion 91b connecting between the main body fixing portions 91a at both ends, and in the center of the attachment portion 91b. A guide portion (an installation time guide portion in the present invention) 91c bulging upward is formed.

  When the dishwasher main body 1 is installed, first, as shown in FIG. 13 (a), the rear portion 105 is placed on the mounting table 200 and the rear portion is tilted forward and downward. After storing in the storage cabinet, the main body 1 is pushed in while sliding on the mounting table 200 almost straight from the front as shown in FIG. At this time, the bottom surface of the main body 1 comes into contact with the upper portion of the guide portion 91 c of the forward slip prevention metal fitting 91, and the leg portion 105 of the main body 1 is pushed in a state of being slightly lifted on the mounting table 200. Therefore, if the guide portion 91c is not provided, the leg portion 105 may come into contact with the mounting portion 91b of the forward slip prevention metal fitting 91 and may be damaged. However, the leg portion 105 is prevented from being moved forward by the provision of the guide portion 91c. Can be prevented from coming into contact with the mounting portion 91b, and the leg portion 105 can be prevented from being damaged.

  As described above, the main body 1 is pushed in until the left and right flange frame bodies 104 on the front surface of the main body 1 come into contact with the front surface of the side plate of the storage cabinet. In this state, the locking piece 90a of the rear fall-preventing metal fitting 90 is inserted into the locking opening 102a provided in the lower part of the back member 102 of the housing 100, and the movement in the vertical direction, the horizontal direction, and the backward direction is performed. Locked. In addition, since the main body fixing portion 91a of the forward shift prevention metal fitting 91 is just behind the lower screw hole of the flange frame 104, the screw 94 inserted into the screw hole of the flange frame 104 from the front is prevented from being forward shifted. The metal fitting 91 is fixed by screwing into the screw hole of the body fixing portion 91a. Thereby, the main body 1 is firmly fixed to the mounting table 200. In the state in which the main body 1 is completely stored in the storage cabinet, the position corresponding to the guide portion 91c in the bottom side surface member 101 of the housing 100 has a shape recessed slightly upward. The main body 1 is not lifted by the contact. Thus, the dishwasher of a present Example can be installed in a storage cabinet favorably.

  It should be noted that the above embodiment is merely an example, and it is obvious that any change, correction, or addition as appropriate within the scope of the present invention is included in the scope of the claims of the present application.

The schematic sectional side view of the principal part in the state which accommodated the washing | cleaning cabinet in the housing | casing in the dishwasher by one Example of this invention. The schematic sectional side view of the principal part in the state which pulled out the washing store in the dishwasher by a present Example. The schematic sectional side view of the principal part in the state which accommodated the tableware in the washing cabinet in the dishwasher by a present Example. The back longitudinal cross-sectional view of the dishwasher by a present Example. The back top view of the dishwasher by a present Example. The side view for demonstrating the structure and operation | movement of the principal part of the upper cover opening / closing mechanism in the dishwasher by a present Example. Detailed sectional drawing which shows the attachment structure of the packing in the dishwasher by a present Example. Detailed sectional drawing which shows the structure of the slide rail mechanism in the dishwasher by a present Example. The longitudinal cross-sectional view of the air trap chamber vicinity in the dishwasher by a present Example. The perspective view which shows the attachment structure of a front slip prevention metal fitting. The front partial perspective view which shows the state which installed the dishwasher of a present Example in the storage cabinet. The side view which shows the state which installed the dishwasher of a present Example in the storage cabinet. The side view which shows the procedure at the time of installing the dishwasher of a present Example in a storage cabinet. The assembly block diagram of an arm nozzle and a tower nozzle in the state which looked into the inside of the washing | cleaning cabinet in the dishwasher of a present Example. The front longitudinal cross-sectional view (a) of the principal part in the center position of a tower nozzle, and the expanded sectional view (b) of A part. The back top view of the principal part which shows the arrangement | positioning state of the drainage hose in the conventional dishwasher.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body 100 ... Housing | casing 101 ... Bottom side surface member 101a ... Recessed part 102 ... Back surface member 102a ... Locking opening 103 ... Top surface member 104 ... Flange frame body 105 ... Leg part 109 ... Screw 2 ... Front opening 3 ... Cleaning cabinet 3a ... Projection 3b ... Flange 3c ... Recess 301 ... Bottom cover 302 ... Rail storage 303 ... Opening 4 ... Top opening 5 ... Door 6 ... Slide rail mechanism 61 ... Fixed rail 61a ... Sliding part 61b ... Overhang part 62 ... Movable Side rail 62a ... sliding portion 63 ... intermediate rail 64 ... sliding body 7 ... upper lid 7a ... hanging piece 7b ... fitting groove 8 ... packing 8a ... sealed portion 8b ... fitting portion 8c ... stepped portion 8d ... overhanging portion 9 ... tableware籠 9a ... Lower ridge 9b ... Upper ridge 10 ... Arm nozzle 10a, 20a ... Water injection hole 11 ... Water supply pipe 12 ... Water storage part 13 ... Cleaning and drainage pump 14 ... Drain pipe 15 ... Drain joint 16 ... Drainage 17 ... Hose band 18 ... Exhaust passage 18a ... Opening 19 ... Exhaust port cover 20 ... Tower nozzle 30 ... Arm member 30a ... First arm 30b ... Second arm 30c ... Long hole 31 ... Upper lid holding fixing piece 31a ... Horizontal axis 33 ... Screw 40 ... 1st guide member 40a ... Cam groove 40b ... Cam follower 41 ... 2nd guide member 41a ... Actuator holding | maintenance part 41b ... Window part 41c ... 1st guide member holding | maintenance part 41d ... Cam groove 42 ... Actuator 42a ... Cam follower 42b ... contact part 42c ... spring attachment part 70 ... air trap chamber 71 ... communication port 73 ... gap 74 ... buffer pipe 75 ... pressure hose 91 ... forward displacement prevention metal fitting 91a ... main body fixing part 91b ... attachment part 91c ... guide Part 93, 94 ... screw 200 ... mounting table

Claims (14)

A main body including a substantially rectangular housing having an open front surface;
A washing cabinet that can be pulled forward from the main body and has an opening for taking in and out the tableware on the upper surface;
An upper lid for closing the upper surface opening of the cleaning cabinet;
Upper lid holding means for holding the upper lid while urging the upper lid upward in the upper space in the main body;
It is movable in the front-rear direction and is held on the inner surface of both side walls of the main body while being urged forward, and moves backward by receiving the force from the cleaning chamber as the cleaning chamber is pushed into the main body. An actuating body,
A movable member that is attached to the upper lid and guides the upper lid to be lowered as the operating body moves backward;
A fixing member attached to the main body and restricting the moving direction of the upper lid,
The actuating body and the movable member are connected to each other in a vertically movable manner via a first cam mechanism, and the moving direction of the movable member and the fixed member is regulated in the front-rear direction via a second cam mechanism. The upper lid is subjected to a force from the cleaning chamber while the moving direction is regulated in the front-rear direction by the connection of the movable member and the fixed member as the cleaning chamber is pushed into the main body. Further, the dishwasher is guided downward by the movable member connected to be movable up and down as the operating body moves rearward. A main body including a substantially rectangular housing having an open front surface;
A washing cabinet that can be pulled forward from the main body and has an opening for taking in and out the tableware on the upper surface;
An upper lid for closing the upper surface opening of the cleaning cabinet;
Upper lid holding means for holding the upper lid while urging the upper lid upward in the upper space in the main body;
It is movable in the front-rear direction and is held on the inner surface of both side walls of the main body while being urged forward, and moves backward by receiving the force from the cleaning box as the cleaning box is pushed into the main body. An actuating body,
A movable member that is attached to the upper lid and guides the upper lid to be lowered as the operating body moves backward;
A fixing member attached to the main body and restricting the moving direction of the upper lid,
The actuating body has a driving part that moves backward together when it moves backward in response to a force from the cleaning cabinet, and the movable member is connected to the driving part and moves backward to the driving part. A driven portion that converts the movement into a force in the downward direction of the upper lid, and a guided portion that moves downward as the movable member moves downward,
The fixing member includes a guide portion that guides the guided portion that moves downward as the upper lid descends and restricts the movement of the upper lid in the front-rear direction, and the guide portion of the fixing member includes the cleaning member. As the operating body moves rearward as the storage is pushed into the main body and the upper cover descends, the guided portion is guided in the vertical direction until the upper cover comes into contact with the upper end of the upper opening of the cleaning storage. Then, the guided portion is guided so that the upper lid further descends while moving backward together with the washing cabinet.   The driven portion is a first cam groove that is inclined obliquely upward toward the rear, the driving portion is a first cam follower that fits into the first cam groove, and the guide portion extends in a vertical direction and has a lower end thereof. The dishwasher according to claim 2, wherein the second cam groove has a substantially rectangular shape extending rearward from the second guide groove, and the guided portion is a second cam follower fitted into the second cam groove.   When the first cam follower reaches the rearmost end of the first cam groove in the process of moving the operating body rearward, the second cam follower is further movable rearward along the second cam groove. The dishwasher according to claim 3, wherein shapes of the first and second cam grooves through the first and second cam followers are defined.   Two each of the fixed member and the movable member are provided apart from each other in the front-rear direction on the inner surfaces of both side walls of the main body and on both side surfaces of the upper lid, and one operating body is disposed on each of the inner surfaces of both side walls of the main body. The dishwasher according to any one of claims 2 to 4, wherein the dishwasher is provided.   6. The dishwasher according to claim 5, wherein the fixing member also serves as a holding portion that holds the operating body so as to be movable in the front-rear direction. A main body including a substantially rectangular casing having an open front surface, a wash cabinet having an opening for pulling out the table from the main body, and for opening and removing tableware on the upper surface, and for closing the upper opening of the wash cabinet A dishwasher comprising an upper lid,
Both side wall surfaces of the housing are formed in a stepped shape that is recessed inwardly on the lower side from the upper side, and the first slide rail extending in the front-rear direction is fixed to the inner surface of the recessed portion so as to protrude inwardly. And a second slide rail extending in the front-rear direction that is slidable with respect to the first slide rail is fixed to a portion located inward of the side surface at the lower end of both side surfaces of the cleaning cabinet. Dishwasher featuring.   A □ -shaped portion having a recessed portion opened downward or a notched portion extending in the front-rear direction is formed at the lower end of both side surfaces of the washing cabinet, and the second slide rail is formed in the recessed portion or □ -shaped. The dishwasher according to claim 7, wherein the dishwasher is housed in a section.   In the space between the both side surfaces of the cleaning cabinet and the inner side walls of the casing when the cleaning cabinet is stored in the main body, the cleaning is performed in a portion where the side wall surface of the casing is not depressed. 8. The dishwasher according to claim 7, wherein an upper lid opening / closing mechanism is provided for moving the upper lid up and down as the cabinet is pulled out and pushed in.   The housing includes at least a side bottom member having a substantially U-shaped front sectional view forming both side surfaces and a bottom surface, a top surface member forming an upper surface, and a back member forming a back surface, each of which is a screw. The dishwasher according to claim 7, wherein the dishwasher is joined to each other. Washing cabinet in which tableware is stored and having a water storage part at the bottom, water jetting means for sucking and spraying water stored in the water storage part of the washing warehouse, and the water storage part and the communication port In a dishwasher comprising: an air trap chamber that communicates with the air trap chamber; a pressure sensor for detecting air pressure in the air trap chamber; and a water level detection means that includes a pressure hose connecting the air trap chamber and the pressure sensor. ,
The air trap chamber is formed integrally with the cleaning chamber so that a gap is formed between the upper wall and the wall surface of the cleaning chamber, and extends obliquely upward from the side wall surface of the air trap chamber. The dishwasher is characterized in that a connecting pipe part having an inner diameter larger than that of the pressure hose is provided, and one end of the pressure hose is connected to a peripheral wall surface of the connecting pipe part.   The washing cabinet has an opening for taking in and out tableware on the upper surface, and can be pulled out from a main body including a substantially rectangular housing having an open front surface, and the inside of the washing cabinet is placed on the front wall of the washing cabinet. An exhaust port communicating with the outside of the machine is formed, and the exhaust port is provided with a cover having an open lower surface for avoiding water sprayed by the water spraying means from directly hitting the exhaust port. The dishwasher according to claim 11. A main body including a housing having a front surface and a plurality of legs at the bottom of the bottom wall, a wash cabinet that can be pulled forward from the main body, and a drawer of the wash cabinet that is mounted on an installation base on which the main body is installed. In a dishwasher comprising a forward slip prevention unit for preventing the main body itself from moving forward during operation,
The main body is provided on the installation table at a position that does not interfere with the front shift prevention part in the front-rear direction, and contacts the bottom wall surface of the main body when the main body is pushed in to install on the installation table. A dishwasher comprising an installation-time guide unit that regulates the posture of the main body so that at least a part of the main body is lifted from the mounting table. The dishwasher according to claim 13, wherein the installation guide portion is provided on the same member as the front shift prevention portion, and the member is fixed on the installation table.

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