JP3417179B2 - 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 for washing dishes.

[0002]

2. Description of the Related Art Conventionally, this type of dishwasher has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, a washing tank 1 has dishes 2 stored therein, washing water is stored at the bottom, and an opening is provided at the front. The cleaning nozzle 3 is rotatably supported in the cleaning tank 1 and ejects cleaning water toward the tableware 2. Wash pump 4
Is to feed cleaning water to the cleaning nozzle 3, and the cleaning pump 4 is driven by a motor 5. The heater 6 is arranged at the bottom of the cleaning tank 1 to heat the cleaning water.

The door 7 covers the front opening of the cleaning tank 1 so as to be openable and closable forward, and a support member 8 is provided at a lower portion inside the door 7.
, And is rotatably held via a shaft 11 on a bearing member 10 attached to the dishwasher body 9. The first sealing member 12 is attached to the upper surface and the left and right side surfaces of the inner wall of the opening of the cleaning tank 1, and the second sealing member 13 is attached inside the lower surface of the door 7.

To explain the operation in the above configuration, when the user opens the door 7 forward, places the dishes 2 in the dish basket 14, stores them in the washing tank 1 and puts the detergent therein, and then starts the operation, first, A predetermined amount of tap water is supplied to the bottom of the cleaning tank 1. Then, the motor 5 and the heater 6 are energized, and the washing water is heated and jetted from the washing nozzle 3 toward the dishes 2 by the washing pump 4 to remove stains on the dishes. During cleaning, the first seal member 12 and the second seal member 13
Thus, the space between the cleaning tank 1 and the door 7 is sealed with water, and the cleaning water jetted into the cleaning tank 1 is prevented from leaking to the outside of the cleaning tank 1.

[0006]

In such a conventional structure, since the door 7 opens in the front direction of the dishwasher main body 9,
There is a problem that the space in front of the dishwasher main body 9 cannot be utilized and the installation place is limited. In order to reduce the area occupied by the dishwasher in the limited kitchen space, the lid is configured to open upward so that the space in front of the dishwasher main body 9 can be effectively used. It becomes a means.

However, in the structure of the upper opening, when the lid is opened, it can be firmly held so that the lid does not come down naturally, and when the lid is closed, the lid closes vigorously and the dishes in the washing tank are closed. It is required not to damage the product or give the user a feeling of insecurity.

For that purpose, the biasing force for biasing the lid in the opening direction may be increased. However, if the biasing force is increased, the weight becomes larger than the dead weight of the lid and the lid is slightly lifted in the closed state. It will be in balance. Here, when the lid is opened without pausing during the washing operation, the lid is vigorously opened to this balanced position, so that there is a problem that the washing water is likely to splash out of the washing tank through the opened gap.

The present invention solves the above-mentioned conventional problems. When the lid is opened and closed when the lid is opened, the lid is firmly held so that the lid does not come down naturally when the lid is open. When closing the lid, prevent the lid from closing vigorously and damaging the dishes in the washing tank, or giving the user an unsafe feeling.In the closed state, do not pause during the washing operation. The purpose of this is to prevent the lid from floating when the lid is opened and to prevent the washing water from splashing outside the washing tank.

[0010]

In the dishwasher of the present invention, a supporting member is fixed to the rear of a box-shaped washing tank having an opening at the upper side, and a lid for covering the opening at the upper side is rotated on the supporting member. Freely attach and attach an urging spring to the support member to urge the lid always in the opening direction, and close the lid between the support member and the cleaning tank when the lid is closed.
So that the lid is opened in the open state.
Attach the reversing spring, and turn the support member behind the lid.
Rolling bearing, biasing spring and reversing spring
Abuts the support member at a certain angle when the lid is opened
The contact portion is formed integrally .

As a result, when the lid is opened, the lid is firmly held so that it does not come down naturally, and when the lid is closed, the lid closes vigorously and the dishes in the washing tank are damaged, which is unsafe for the user. When the lid is closed without pausing during the washing operation, it prevents the lid from floating and prevents the washing water from splashing out of the washing tank. can do.

[0012]

The invention according to claim 1 of the embodiment of the present invention includes a cleaning tank box-shaped having an opening upward, before rotatably attached to a support member fixed to the rear portion of the cleaning tank < A lid for covering the opening upward, and a lid attached to the support member .
A biasing spring that constantly biases the lid in the opening direction, and is installed between the lid and the support member or the cleaning tank .
When the lid is closed, the lid is urged in the closing direction,
In the opened state, a reversing spring for urging the lid in the opening direction is provided, and the support member is rotatably held behind the lid.
Bearing part to hold and holding of the biasing spring and reversing spring
Section and the support member at a specific angle when the lid is opened.
Contact and a contact portion which was formed integrally, in the operation of the cover opening and closing when the lid is configured to open in the upward direction, the cover is tightly held not to come down to the nature in the cover opened status, the lid When closing the lid, you can prevent the lid from closing vigorously and damaging the dishes in the washing tank or giving the user a feeling of unsafeness.In the closed state, pause the washing operation. Without lifting the lid when opening the lid,
It is possible to prevent the washing water from splashing outside the washing tank.
In addition, the number of parts that make up the opening and closing bearing of the lid is reduced.
It is possible to reduce assembly workability and workability during repair and replacement.
The strength around the open / close bearing can be improved.
You can

According to a second aspect of the present invention, an opening is provided above.
It has a box-shaped cleaning tank and a support fixed to the rear of this cleaning tank.
It is rotatably attached to the holding member and covers the opening upward.
A lid and attached to the support member to always open the lid
Urging spring for urging the lid, the support member, and
Is installed between the cleaning tank and the lid closed
Is urged in the direction to close the lid, and in the open state it is the direction to open the lid
To urge a plurality of reversing spring, wherein the Ne fall over a plurality of anti <br/>, connected by slidably inserted connecting rod
The lid is open when the lid is configured to open upward.
In the closing operation, the lid will lower naturally when the lid is open.
Hold it firmly so that it does not
Closes vigorously to damage the dishes in the washing tank and
It can prevent the user from feeling unsafe and the lid
In the closed state, the lid open without a pause during the cleaning operation
Suppresses the lid from floating and scatters the wash water out of the washing tank.
In addition, it is possible to prevent the twisting deformation of the reversing spring to the rear by the connecting rod when the load is applied to the reversing spring when the lid is closed, and it is possible to eliminate the adverse effect on the durability strength of the reversing spring. In addition, since there is no rearward twisting deformation, the required space behind the open / close bearing can be reduced, and the bearing circumference can be kept compact.

An embodiment of the present invention will be described below with reference to the drawings.

(Embodiment) As shown in FIG. 1, a cleaning tank 21 stores dishes 22 inside, cleaning water is stored at the bottom, and an upper surface is an opening. The cleaning nozzle 23 is rotatably supported in the cleaning tank 21, and sprays the cleaning water sent by the cleaning pump 24 toward the tableware 22. The heater 25 is arranged at the bottom of the cleaning tank 21 to heat the cleaning water.

The inner lid 26a covers the upper opening of the cleaning tank 21 so as to be openable and closable upward, and the outer lid 26 is provided above the inner lid 26a.
b is attached, and the inner lid 26a and the outer lid 26b cover the lid 2
Make up 7. As shown in FIG. 2, a bearing portion 28 is formed behind the inner lid 26a, and a support member 30 is rotatably attached by a shaft 29. The support member 30 is fixed to the cleaning tank 21 and has a lid 27 centered around the shaft 29.
Is configured to rotate in the upward direction.

Further, as shown in FIGS. 3 and 4, two urging springs 31 are attached to the supporting member 30 via the shafts 29 in the left and right directions. In FIG. 2, the support member 30 and the biasing spring 31 are shown by a solid line in the lid closed state and by a two-dot chain line in the lid open state, but the restoring force of the biasing spring 31 is formed on the inner lid 26a. Since it acts on the holding portion 32, the inner lid 26
A is always biased in the opening direction.

As shown in FIG. 5, an end portion 34 of the reversing spring 33 is slidably attached to a holding portion 35 formed integrally with the inner lid 26a, and the other end portion 36 is formed on the support member 30. It is slidably attached to the holding portion 37. In addition,
In FIG. 5, the support member 30 and the reversing spring 33 are shown by a solid line in the lid closed state and by a two-dot chain line in the lid opened state, but as can be seen from the positional relationship between the end portions 34 and 36 and the shaft 29, the lid is shown. With the dead point appearing in the middle of closing to opening the lid as a boundary, the urging force acts in the direction of closing the lid 27 in the lid closed state, and acts in the direction of opening the lid 27 in the lid open state.

Behind the inner lid 26a, as described above, the bearing portion 28 for rotatably holding the support member 30, the holding portion 32 for the biasing spring 31, and the holding portion 35 for the reversing spring 33 are integrated. 2 and further, as shown in FIG. 2, the stopper portion 38 of the support member 30 is opened at an opening angle θ = 70 ° when the lid is opened.
The abutting portion 39 that abuts against is integrally formed.

As shown in FIG. 3, the reversing spring 33 has a connecting rod 40 inserted therein and a plurality of reversing springs 33 are connected by the connecting rod 40.

The operation of the above structure will be described. When the user opens the lid 27 upward, places the tableware 22 in the tableware basket 41, stores it in the cleaning tank 21 and puts the detergent therein, and then starts the operation, first, A predetermined amount of tap water is supplied to the bottom of the cleaning tank 21. And the cleaning pump 24 and the heater 25
Is energized, the washing water is heated and ejected from the washing nozzle 23 toward the tableware 22, and the dishes are cleaned.
During cleaning, the sealing member 42 is used to clean the cleaning tank 21 and the inner lid 26.
It is possible to prevent the cleaning water jetted into the cleaning tank 21 from leaking to the outside of the cleaning tank 21 by sealing water between the cleaning tank 21 and a.

Next, the moment acting on the lid 27 will be described with reference to FIG. 6. The moment of the own weight of the lid 27 is as shown by the curve a in FIG.
Since the sealing surface 43 of is inclined forward by 15 °, the lid opening angle θ becomes maximum at 15 °, decreases as it opens and becomes minimum at the lid full opening angle θ = 70 °, and always works in the direction to close the lid 27. . As shown by the straight line b in FIG. 6, the moment of the biasing spring 31 decreases in proportion to the angle θ as the lid 27 is opened, and always acts in the direction to open the lid 27.

As shown by the curve c, the moment of the reversing spring 33 acts on the dead point c0 as a boundary, and the urging force acts in the direction to close the lid 27 in the closed state, and in the direction to open the lid 27 in the opened state. Biasing force works. The total sum of the moments is shown by the curve d, and when the lid opening angle θ is small, it works in the direction to close the lid 27, and the lid 27 opens as the lid 27 opens.
It shows that there is a change in that the moment in the opening direction becomes smaller as it approaches the fully opened state.

This content will be described by the operation of opening and closing the lid 27. When the user opens the lid 27 and sets the dishes 22 so that the lid 27 does not come down naturally with the lid 27 open. And can hold. Also, the lid 2
When closing 7, the moment in the opening direction gradually increases and then begins to decrease, so that the lid 27 closes vigorously and the dishes 22 in the cleaning tank 21 are damaged, or the user feels unsafe. There is nothing to do. Further, when the lid 27 is opened without pausing during the washing operation, the lid 2 is closed in the closed state.
Since the moment acts in the direction to close 7,
Does not open vigorously, and the cleaning water does not splash out of the cleaning tank 21 through the open gap.

As described above, the biasing spring 31 alone can provide the biasing force whose moment is proportional to the angle θ, but the combination with the reversing spring 33 enables the desired lid opening / closing operation.

Further, a reaction force acts on the bearing portion 28 and the holding portion 32 formed on the rear side of the inner lid 26a by the biasing spring 31, but becomes a compressive force and does not act in the pulling direction. Generally, in the case of resin parts, in the case of compressive stress, the fracture strength is remarkably improved against tensile stress, and the strength against creep deformation is also improved. Further, in the contact portion 39 formed at the rear of the inner lid 26a, a large force acts when a force is further applied in the opening direction when the lid is fully opened, but similarly, a compressive stress is exerted, so sufficient strength can be secured. . Figure 5
The same applies to the holding portion 35 of the reversing spring 33 shown in FIG.

Further, the bearing portion 28 and the biasing spring 3
By integrally forming the holding portion 32 of No. 1, the holding portion 35 of the reversing spring 33, and the abutting portion 39 on the inner lid 26a, the number of parts constituting the opening and closing bearing can be reduced, and the assemblability can be improved. The workability during repair and replacement can be improved.

Further, the connecting rod 40 is slidably inserted into the reversing spring 33, and a plurality of reversing springs 33 are connected by the connecting rod 40, so that when the lid is closed and a load is applied to the reversing spring 33, it is generated. Due to the biasing force, the reversing spring 33 itself tends to twist rearward of the inner lid 26a in the lengthwise direction thereof, but the reversing springs 33 are restricted by the connecting rods 40 so as not to be twisted and deformed individually.

Thus, when the lid is closed, the backward twisting deformation of the reversing spring 33 when a load is applied to the reversing spring 33 can be suppressed, and the adverse effect on the durability of the reversing spring 33 can be eliminated. Since there is no twisting deformation to the rear, the space required behind the open / close bearing can be reduced,
It is possible to keep the bearing circumference compact.

[0030]

As described above, according to the invention described in claim 1 of the present invention , when the lid is opened, the lid is firmly held so that it does not come down naturally, and when the lid is closed, the lid vigorously. It is possible to prevent the dishes in the washing tank from being closed and giving the user an unsafe feeling when closed, and when the lid is closed, the lid should be opened when the lid is opened without pausing during the washing operation. The lid can be prevented from floating, the washing water can be prevented from splashing out of the washing tank , and the opening / closing bearing around the lid can be configured.
It is possible to reduce the number of parts to be assembled,
The workability at the time of exchanging can be improved and the opening / closing bearing
Strength can be improved .

According to the invention of claim 2 , the lid is
Firmly so that the lid does not come down naturally in the open state
Hold and close the lid vigorously when washing.
It may damage the dishes in the tank and give the user an unsafe feeling.
Can be prevented, and when the lid is closed, the washing operation
Suppresses the floating of the lid when opening it without pausing inside
However, it is possible to prevent the washing water from splashing out of the washing tank.
With wear, lid closed, when a load is applied to the reversing spring, the connecting rod can be suppressed torsional deformation backwards of the reversing spring, Ki out to remove the adverse effect on the durability strength of the reversing spring, rearward Since there is no torsional deformation, the required space behind the open / close bearing can be reduced and the bearing circumference can be kept compact.

[Brief description of drawings]

FIG. 1 is a sectional view of a dishwasher according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of an essential part of the dishwasher taken along a biasing spring portion.

FIG. 3 is a partially cutaway plan view of the dishwasher.

FIG. 4 is an enlarged plan view of the dishwasher with a part cut away.

FIG. 5 is an enlarged cross-sectional view of a main part of the dishwasher taken along a reversing spring section

FIG. 6 is an explanatory view of the operation of the lid of the dishwasher.

FIG. 7 is a cross-sectional view of a conventional dishwasher

[Explanation of symbols]

21 washing tank 27 Lid 30 Support member 31 bias spring 33 Inversion spring

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 6-22893 (JP, A) Fukukaihei 4-68783 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 15/42

Claims (2)

(57) [Claims] 1. A box-shaped cleaning tank having an opening at the top,
A lid that is rotatably attached to a support member fixed to the rear portion of the cleaning tank and covers the opening upward; a biasing spring that is attached to the support member and always biases the lid in the opening direction; It is attached between the support member and the cleaning tank, and when the lid is closed, the lid is closed.
And a reversing spring for urging and urging the lid in the opening direction in the open state, and rotating the support member behind the lid.
A bearing that holds freely, the bias spring and the reverse
The support part of the bed and the support at a certain angle when the lid is opened
A dishwasher integrally formed with an abutting portion that abuts a member . 2. A box-shaped cleaning tank having an opening at the top,
It is rotatably mounted on a support member fixed to the rear of this cleaning tank.
A lid attached to cover the opening upward, and the support member
A biasing spring that is attached and always biases the lid in the opening direction.
Between the lid and the support member or the cleaning tank.
Attached and urged in the direction to close the lid when the lid is closed.
However, in the open state, multiple inversions that urge the lid to open
And a spring, the plurality of reversing spring is tableware washing machine which is connected by slidably inserted connecting rod.