JP2936740B2 - Dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher of the so-called under counter type, in which a door provided at a front opening is tilted forward and turned before and after standing up to open and close a washing chamber with the door. The present invention relates to a dishwasher having holding means for temporarily stopping a door slightly before a fully closed or fully opened state.

[0002]

2. Description of the Related Art A typical prior art of such an under-counter dishwasher is represented by Japanese Patent Publication No. 54-33668. This dishwasher is operated almost vertically with the door upright, and the washing room is fully closed by closing the front opening, and from this state, the door is moved forward to make the door almost fully horizontal. Then, a rack accommodating tableware is mounted on this door and put in and out.

[0003]

A conventional under-counter dishwasher of this type is a washing machine in which a washing liquid is sprayed into a washing chamber in response to a fully closing operation of a door in order to improve operability. Generally, driving is performed automatically.

In this case, when the cleaning liquid is not used,
If you do not leave the door open, you will automatically enter idle operation, so there is a problem that the door travels in front of the aircraft and occupies a large dead space, and when you want to close the door while it is stopped In addition, it is necessary to add a separate stop switch, which complicates the structure and handling.

If the door is left open, there is a major problem that the hot water in the washing chamber cools down and heat loss is large.

[0006] On the other hand, if the door is simultaneously operated in a fully opened horizontal state, the garbage and water droplets adhering to the inner surface of the door do not flow into the washing room, but fall to the floor in front of the washing machine. There is also a problem of polluting the surrounding area.

SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned problems of the conventional dishwashing machine and to maintain the closed state of the door close to the fully closed state when the washing machine is not used, so that the idle operation and the dry operation can be performed. By preventing heat loss and maintaining the open state near full open, garbage on the door,
An object of the present invention is to provide a dishwasher capable of reliably collecting water droplets.

[0008]

According to the present invention, the cleaning chamber 1 is opened and closed by a door 4 whose lower part is rotatably supported by a support shaft 8 having a horizontal axis. In the dishwasher in which the washing operation is automatically performed by spraying into the washing chamber 1, the holding means 19, 20 for keeping the door 4 slightly open by stopping the door 4 at least slightly before the fully closed state are provided. A dishwasher characterized by being provided.

Further, according to the present invention, the cleaning chamber 1 is opened and closed by a door 4 whose lower part is rotatably supported by a support shaft 8 having a horizontal axis, and the tableware is placed in the cleaning chamber 1 with the door 4 almost fully opened. A dishwasher for loading / unloading the dish 7, provided with holding means 19, 21 for stopping the door 4 slightly before the fully opened state and keeping the door 4 in a slightly inclined state. Machine.

[0010]

According to the present invention, when closing the door 4, it is possible to stop the movement once in a state immediately before the door is almost fully closed, and to stably hold the door 4 at this position. A feeling can be given, and the vehicle can be reliably stopped.

In this stopped state, the steam leakage from the front opening can be suppressed to minimize the heat loss in the cleaning chamber 1, and by not fully closing, the idle operation when the cleaning operation is interrupted when the cleaning operation is interrupted. Start can be prevented beforehand.

When the door 4 is opened, the movement can be stopped once in the inclined state immediately before the door 4 is fully opened,
Garbage and water droplets adhering to the inner surface side of the door 4 can flow reliably into the washing chamber 1, and contamination of the floor around the washing machine can be prevented in the subsequent horizontal full opening operation.

Further, according to the present invention, since the door 4 can be stopped slightly before the horizontal fully opened state and the door 4 can be kept in a slightly inclined state, when the opening operation is performed, water drops flowing down from the inner surface of the door 4, We let residual vegetables flow in washing room 1 exactly,
It can be kept beautiful without contaminating around the washing machine.

[0014]

FIG. 1 is a right side view of a cleaning chamber according to an embodiment of the present invention, in which a door portion of a cleaning chamber is partially omitted and cut away.

The washing room 1 has a top plate and a back plate by attaching an outer plate 3 to be described later around a frame member 2 made of four C-shaped steels, which are reinforcing members provided on both right and left sides of the front and rear portions. And a liquid-tight chamber surrounded by left and right side plates, and a door 4 is provided to cover the front opening.

FIG. 2 is a perspective view schematically showing the dishwasher according to the embodiment of the present invention with the door 4 fully opened.

The body surrounded by the outer panel 3 is divided into an upper chamber and a lower chamber. The upper chamber houses a rack 38 on which the upper cleaning nozzle 5, the lower cleaning nozzle 6, and the tableware 7 are mounted. The lower chamber is formed in a machine room in which necessary equipment such as a cleaning liquid tank, a cleaning liquid pump, and a booster (not shown) are installed.

As shown in FIGS. 1 and 2, the door 4 is rotatably supported by the frame member 2 so as to be rotatable about a horizontal axis via a support shaft 8 whose lower part on the right and left sides is realized by a pin described later. The door 4 can be rotated back and forth between a fully open position in which the door 4 is moved forward in a horizontal state and a fully closed position in which the door 4 stands upright, that is, a position in which the front opening is closed.

FIGS. 3, 4, 5 and 6 are a horizontal sectional view of the lower part of the front left corner of the cleaning chamber 1, a vertical sectional view of the left side wall part of the cleaning chamber 1, and a horizontal cross section of the central part of the left front corner of the cleaning chamber 1. 7 is an exploded perspective view of a support device for pivotally supporting the door 4 to the cleaning chamber 1. FIG. The support device includes a support member 9 fixed to the left and right sides of the door 4 and protruding outward from the lower part, a bracket 10 fixed to the frame member 2 erected on the left and right front sides of the cleaning chamber 1 by welding or the like. , Pin 8
And a bush 12 and a pin holding piece 13.

The support member 9 has a pin mounting plate 15 fixed by welding to one end from the center of the strip portion 14, and the pin 8 is inserted into a hole 16 provided at an end of the pin mounting plate 15 by caulking or welding. Stick.

The bracket 10 has a semi-circular groove 17 at the upper edge thereof, and is fixed to the frame 2 by welding the surface 10A to the inner surface of the frame 2.

The bush 12 is fitted into the semi-circular groove 17 of the bracket 10 and the pin 8 of the support member 9 attached to the door 4
Is inserted into the bush 12, and the pin holding piece 13 is applied to a predetermined portion of the bracket 10 from the side opposite to the insertion, and the two portions are fixed with screws, so that the door 4 is rotated to the frame member 2 of the cleaning chamber 1. Can pivot as much as possible,
Further, by forming the support member 9 into a unique shape as shown in FIG. 7, the pin 8 serving as a support shaft is located at a position protruding to the frontmost portion of the opening surface of the cleaning chamber 1, and the door 4 is fully opened and horizontal. In this case, the entirety of the door 4 can be extended from the lower front edge of the opening toward the lower edge of the door 4 to make it easier to put the rack 38 in and out.

The support member 9 is provided with a contact portion 18 at a distal end projecting from a lower portion of the door 4, and a pin 19 is fixed to the inside of the contact portion 18 by means such as caulking.
Further, the support member 9 has one end of a spring 37 engaged with the end provided with the contact portion 18, and the door 4 can be lightly opened and closed by the spring 37 having the other end engaged with the frame member 2. ing.

In FIG. 1, a first engaging member 2 capable of elastically engaging with a pin 19 is provided at a predetermined portion of the frame member 2.
0 and the second engagement member 21 are fixed.

Further, a stopper 22 for abutting on the abutting portion 18 is fixed at a position near the second engaging member 21 and on a side opposite to the pin 8.

FIG. 8 is an exploded perspective view of the first and second engaging members 20 and 21, and shows a U-shaped catcher 23.
And a case 24 formed in a U-shape to cover the catcher 23 with screws and fix to the frame member 2 and hold the catcher 23 at a fixed position.
1 is configured.

The catcher 23 is a molded product made of a hard synthetic resin such as a synthetic resin called "Duracon", has a hollow structure as a whole, and has a spring property. The catcher 23 has a concave portion D1 at one intermediate portion of the opposing holding pieces 26, 26, and the concave portion D1 and the inner concave portion D2 of the curved base 25.
Are formed in an engagement portion that can elastically lock the pin 19.

The catcher 23 has a claw 27 protruding outside the front end portion of each of the holding pieces 26, 26 on the opening side. On the other hand, the metal case 24 has a hole 28 provided on a side surface corresponding to the claw 27. The catcher 23 is stably held in the case 24 by the claws 27 elastically entering the holes 28.

FIG. 9 is a schematic side view of the cleaning chamber 1 and the door 4
Is closed slightly before the fully closed state, the U-shaped rack guide rising seat 29 provided on the inner surface of the door 4 enters a substantial part of the rim around the front opening of the cleaning chamber 1. Therefore, the gap formed between the upright seat 29 and the lip portion has a labyrinth effect on the flow of steam and heat in the cleaning chamber 1 and, therefore, the door is almost completely closed. Even in this state, it is possible to sufficiently prevent heat loss, and this closed state can be stably held by the holding piece realized by the pin 19 and the first engagement member 20.

FIG. 10 is an explanatory view of the opening / closing operation of the door 4.
Referring to FIGS. 10 and 1 together, the opening / closing operation will be described. The first engaging member 20 is attached to the frame member 2 such that the concave portion D1 is aligned with the line A1 and the inner concave portion D2 is aligned with the line A2. Fixed, second
The engaging member 20 has a concave portion D1 with a line A3 and an inner concave portion D2 with a line A.
4 is fixed to the frame member 2 so as to be centered on the frame member 4.

When the door 4 is raised from the open position, when the pin 19 reaches the opening of the first engagement member 20, a slight braking feeling is felt, and it can be seen that the door is almost fully closed. When the pin 19 is further raised, the pin 19 and the concave portion D1 are engaged with each other at a position where the rotation angle is shifted by about 7.5 ° before the vertical line A2, and it is perceived that the pin 19 has reached a predetermined position by a click feeling. At the same time, even if the hand is released from the handle 30 of the door 4 due to the resilient holding action of the holding pieces 26, the position of the door 4 is stably maintained, and the position of the door 4 with respect to the line A1 indicating this state is maintained. Even if a considerable force is applied, the door 4 does not easily move. The closed state indicated by the line A1 corresponds to the position of the door 4 in FIG.

When a strong pushing force is applied to the door 4 held by the holding means including the pin 19 and the first engaging member 20, the pin 19 moves by overcoming the spring force of the concave portion D1. At the same time when the movement reaches the inner concave portion D2 and the movement stops, the door 4 is completely closed along the vertical line A2. In this state, the door 4 attaches the magnet piece 36 attached to the inside thereof to the side wall of the cleaning chamber 1. The switch 31 is turned on by bringing the switch 31 closest to the provided reed switch 31,
By this ON operation, the cleaning operation for ejecting the cleaning liquid from the cleaning nozzles 5 and 6 is automatically started.

When the door 4 is opened by the end of the washing operation or the like, the pin 19 comes off the first engaging member 20 and moves counterclockwise in FIG. Then, after the pin 19 reaches the opening of the second engagement member 21 and feels a slight braking sensation, when the pin 19 is further tilted to the horizontal side, the rotation angle is about 7.5 ° before the horizontal line A4. The pin 19 and the concave portion D1 are engaged with each other, and it is understood that the pin 19 has reached the predetermined position by a click feeling. At the same time, the current position of the door 4 is stably maintained due to the elastic holding action of the holding pieces 26. This position is indicated by line A3.

In this open state, the door 4 is slightly inclined with a downward slope toward the cleaning chamber 1, and water droplets and garbage adhered to the inner surface of the door 4 smoothly and reliably flow down into the cleaning chamber 1. .

When the door 4 held by the holding means consisting of the pin 19 and the second inclined member 21 is further pressed down, the pin 19 moves by overcoming the spring force of the recess D1, and moves to the inner recess D2. At the same time as the movement stops, the contact portion 18 contacts the stopper 22, and the door 4 is fully opened as indicated by the horizontal line A4, and the rack 38 in the cleaning chamber 1 is opened.
It can act as a stable cradle when taking out or pushing in reverse.

At this time, even if a considerable load is applied to the door 4, the horizontal state is maintained by the contact portion 18 and the stopper 22, and the door 4 can cope with the load with sufficient mechanical strength.

FIG. 11 is a schematic diagram of the electric circuit of the dishwasher. A reed switch 31 is connected in parallel with a pushbutton switch 32 for starting operation.
The cleaning liquid pump 33 and the cleaning liquid heater 34 are connected to the output port of the processing unit 35.

When either one of the switches 31 and 32 is turned on, the cleaning operation in which the pump 33 and the heater 34 operate is started, and the door 4 is not fully closed as shown in FIG.
If the state of the line A1 is maintained, the automatic cleaning operation will never be started unless the push button switch 32 is pressed.

FIG. 12 is a perspective view of a catcher 23 according to another embodiment of the present invention, which is shown in FIG. 8 except that the holding piece 26 has a flat surface without the concave portion D1. It has the same structure as.

In this example, the catcher 23 is
If a structure having sufficient and large spring holding force between the members 6 and 26 is provided, when the door 4 is closed, a strong braking sensation is received at a position slightly before reaching the vertical fully closed state. The door 4 can be stably positioned and fixed at an appropriate position where the pin 19 enters between the pins 26, 26, and can exhibit the same holding function as the catcher 23 shown in FIG.

[0041]

As described above, according to the present invention, the door 4
Can be stopped at least slightly before the fully closed state and the door 4 can be kept slightly open, so that chattering does not occur at all when an impact is applied, and the door 4 is fully closed. A device with high reliability in terms of operability can be provided by preventing malfunctions in the washing operation.

Further, by maintaining the device in a slightly open state, it is possible to prevent vapor and heat from escaping from the opening, thereby providing an economically valuable device with little heat loss.

Further, according to the present invention, since the door 4 can be stopped slightly before the horizontal fully opened state and the door 4 can be kept in a slightly inclined state, when the opening operation is performed, water drops flowing down from the inner surface of the door 4, We let residual vegetables flow in washing room 1 exactly,
It can be kept beautiful without contaminating around the washing machine.

Also, by stopping the movement once immediately before the door is fully opened, there is an advantage that the impact given to the stopper can be reduced as compared with the case where the door 4 is fully opened at a stroke.

[Brief description of the drawings]

FIG. 1 is a right side view of a dishwasher according to an embodiment of the present invention, in which a door portion of a washing chamber is partially omitted and cut away.

FIG. 2 is a perspective view schematically showing a dishwasher according to an embodiment of the present invention.

FIG. 3 is a horizontal cross-sectional view of a lower portion of a left front corner of the cleaning chamber according to the embodiment of the present invention.

FIG. 4 is a vertical sectional view of a left side wall portion of the cleaning chamber according to the embodiment of the present invention.

FIG. 5 is a horizontal sectional view of a central portion of a left front corner of the cleaning chamber according to the embodiment of the present invention.

FIG. 6 is a perspective view of a door of a cleaning room according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view of the door support device according to the embodiment of the present invention.

FIG. 8 is an exploded perspective view of first and second engagement members according to the embodiment of the present invention.

FIG. 9 is a schematic side view of a cleaning chamber according to an embodiment of the present invention.

FIG. 10 is an explanatory diagram of an opening / closing operation of a door according to the embodiment of the present invention.

FIG. 11 is a schematic diagram of an electric circuit of the dishwasher according to the embodiment of the present invention.

FIG. 12 is a perspective view of a catcher according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing room 2 Frame material 4 Door 7 Tableware 8 Support shaft 19 Pin 20 First engaging member 21 Second engaging member

Claims (2)

(57) [Claims] The cleaning chamber 1 is opened and closed by a door 4 whose lower part is rotatably supported by a support shaft 8 having a horizontal axis, and the cleaning liquid is injected into the cleaning chamber 1 by fully closing the door 4. In a dishwasher where operation is automatically performed, the door 4
A dishwasher provided with holding means 19, 20 which stops at least slightly before the fully closed state and keeps the door 4 slightly open. 2. The cleaning chamber 1 is opened and closed by a door 4 whose lower part is rotatably supported by a support shaft 8 having a horizontal axis, and the tableware 7 is loaded into the cleaning chamber 1 with the door 4 opened almost horizontally. /
A dishwashing machine to be carried out, wherein holding means (19, 21) for stopping the door (4) slightly before the fully opened state and keeping the door (4) slightly inclined are provided.