JP2008194484A - Baffle for drum washer, capable of reducing vibration, and providing high washing force - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of horizontal axis type drum washers with conventional baffle form that the washing cannot be fully lifted upward by centrifugal force and the baffle even if the drum is rotated, resulting in the washing simply rotating, when there is imbalance in the amount of detergent, water, and the washing. <P>SOLUTION: The baffle is formed roughly in an inequilateral triangle. One side toward the rotating axis of drum rotation and a tangent in contact with the side and an inner wall of the drum roughly form the right angle or over. The washing is thus prevented from slipping down. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  Baffle of drum type washing machine with horizontal axis rotation

  A drum-type washing machine with a horizontal axis that uses the same rotating drum “1-A” in FIG. 1 is used for the purpose of stirring laundry, and is called a baffle. Various approximately isosceles triangular protrusions as shown in “B” are prepared on the rotating drum. These baffles lift the laundry in the drum in the direction of rotation as the drum rotates. Laundry is performed by using a combination of detergent power and mechanical power of the washing machine. A drum-type washing machine that rotates on the horizontal axis controls the rotation of the drum so that washing dirt is washed by a mechanical force such as “scrubbing” or “tapping”, that is, washing is performed mainly by mechanical force. I do.

  In order to increase the mechanical cleaning power, Japanese Patent Application Laid-Open No. 09-215894 and Japanese Utility Model Application No. 55-053081 expect the effect of the washboard on the baffle, and the surface is “1-2” of “1-B” in FIG. As shown in the figure, it is corrugated with irregularities. There is also a model that considers the stirring effect of laundry by attaching a baffle such as a higher acute triangle like “1-1” of “1-B”.

  Since “1-1” and “1-2” of “1-B” in FIG. 1 have many difficulties, the currently popular baffle has the shape of “1-3” of “1-B” in FIG. Mainstream. The laundry is put into a rotating drum incorporated in the washing tub, and water or the like is supplied, so that the laundry is in a state where necessary water and detergent are adsorbed. The washing efficiency of the drum type washing machine such as “rice washing” and “tapping” is basically superior to that of the conventional water washing type spiral washing machine. However, if the balance between the amount of detergent, the amount of water and the amount of laundry is lost, the prevailing baffle cannot lift the laundry from the drum wall to the top of the rotating drum as shown in FIG. It will fall. That is, the detergency falls below the detergency caused by the mechanical force of the conventional water flow type spiral washing machine.

  As described in the 2004 National Life Center product test evaluation and Japan Life Center report, when the balance between the amount of laundry and water in these rotating drums breaks down, the laundry is in a state of swimming in the water. Thus, it cannot be washed as shown in FIG.

  A sufficient amount of detergent is required for washing, and a sufficient amount of water is required for washing cedar. However, it is impossible to require consumers who use drum-type washing machines to be aware of the optimum conditions and satisfy the conditions.

  One of the factors causing the “slip-off” phenomenon is the shape of the baffle. When the baffle scoops up the laundry, if there is no water passage hole, the washing water remains between the laundry, which acts as a lubricant and makes it difficult for the laundry to stay on the baffle.

Real Zensho 54-176274 Real Shosho 55-167387 JP 56-083393 JP 56-158690 Real Zensho 58-043378 All real Sho 60-015283 Jinpyeong 01-014392 Jinpyeong 01-128779 JP 02-005993 JP 04-092697 Jinpyeong 04-093086 JP 05-184766 JP-A-8-266777 JP-A-8-4593 JP-A-11-76679 JP2002-315985 JP2004-5765 Real Sho 55-053081 JP 56-031791 JP 56-083394 Real Zensho 57-030180 Real Zensho 59-165179 63-186186 JP-A-01-015398 Jinpyeong 03-168281 Jinpyeong 02-048079 JP 04-097784 JP 04-240489 JP 09-215894 Japanese Patent Laid-Open No.8-131685 JP-A-9-215894 JP2001-218993 JP2004-89339

  The problem to be solved is that, as can be seen from the above description, in a horizontal-axis rotating drum type washing machine that uses the same rotating drum for washing and dewatering, the laundry is dropped from a high position in the rotating drum, and the mechanical force Therefore, there is a problem of effective washing, and at the same time, there is a problem of vibration reduction at the time of dewatering rotation unique to the horizontal axis rotary drum type washing machine.

  That is, in the conventional shape, the reason for this “slip-off” is that the friction resistance between the plurality of laundry is reduced by the detergent and water, and at the same time, the friction resistance is also reduced on the surface of the drum. Even if the drum rotates, it cannot be sufficiently pulled upward by centrifugal force and baffle, and the laundry simply rotates as shown in FIG.

  In order to prevent the “slip-off phenomenon”, a baffle with a sharp tip as shown in Fig. 3 of the public utility Showa 57-30180 may be attached. However, when the same rotating drum is used for washing and dewatering as shown in FIG. 4, there is a negative effect due to the unevenness of the laundry, and the uneven load due to the laundry becomes large, resulting in a large vibration.

As described above, it is difficult to easily achieve the optimum balance among the laundry dispersion, the amount of laundry, the centrifugal force applied to the laundry, the amount of detergent, the amount of water, and the like.

  It is desirable to solve in a simple way, and the basic operation to solve is to provide a baffle that protrudes like a shelf to lift the laundry so that the laundry can rise to the top when the drum rotates .

  In addition, in order to reduce the vibration due to the uneven distribution of the laundry, when the drum rotates in the dehydration process, the laundry in the drum is evenly distributed inside to reduce the uneven load. That is, when the drum starts rotating for dehydration, the laundry is dispersed from the laundry that is in contact with the inner wall of the drum due to the centrifugal force, and is fixed to the inner wall of the rotating drum, and close to the center of rotation. Is finally fixed to the inner wall of the drum. In order to create this situation, the baffle needs to have a surface structure that does not interfere with the movement of the other laundry while stripping off the baffle in the laundry.

The shape of the baffle that can solve the two problems at the same time is as follows.When the dehydration rotation rotates clockwise, the cross section of the baffle has a substantially unequal triangular shape as shown in FIG. 5, and the side located on the inner wall side of the rotating drum is the bottom. The interior angle of the base angle formed by the vertex “A” in the dewatering rotation direction of the unequal side triangle is the sharpest angle among the three points, and the vertex “A” of the base angle and the unequal side triangle There is no protrusion including a groove on the surface of the baffle including one side connecting to the vertex “B” at the position corresponding to the bottom.
In addition, at the contact “C” formed by the opposite side of the sharpest inner angle and the tangent line that contacts the opposite side and the circumference of the rotating drum, the angle positioned on the inner angle side of the unequal side triangle forms a substantially right angle or 90 degrees or more. A projecting baffle having a shape feature is mounted on a rotating drum. In the same way as the drum surface, a large number of holes are made on the surface of the steep slope that forms a substantially right angle, etc., to provide a function to prevent the laundry from sliding.

About "substantially" of "substantially right angle", the rotating drum on which the baffle rides is expressed in this way because parts manufactured by sheet metal processing are combined and high precision cannot be expected like machined parts. It is judged that an assembly accuracy of about + -3% is obtained.
The problem to be solved is that, as can be seen from the above description, in the washing method of the horizontal axis rotating drum type washing machine using the same rotating drum for washing and dewatering, the laundry is dropped from a high position in the rotating drum. There is a problem of effective washing by mechanical force. At the same time, vibration reduction at the time of dewatering rotation peculiar to a horizontal axis rotating drum type washing machine is also an issue.

As an effect of the present invention,
1. Compared with conventional baffles, the cleaning power by mechanical force increases and the washing time is shortened.
2. Compared to the conventional baffle structure, vibration during dehydration is reduced.
3. In the cedar process, the ability of the detergent to diffuse increases and the cedar time is shortened.
4). Since there are no moving or moving parts in the baffle mechanism, no failure will occur.

  As shown in FIG. 6, four baffles are attached symmetrically to the drum. The shape of the baffle is such that the rising angle of the contact “C” is 90 degrees. The angle of vertex “B” is 60-70 degrees, and a water passage hole is attached to the steep slope of the baffle.

In the washing process, the drum is rotated counterclockwise in a certain direction. The movement of the laundry is as shown in FIG. 7, and when the rotating drum rotates counterclockwise in the washing process, the laundry rides on the right shelf of the baffle and the laundry is washed on the left side which is a conventional shape. Laundry is dropped from a higher position than when the object is on board.

The cedar process is shaken from side to side. When the left and right are swung left and right in this manner, the detergent gradually flows out of the laundry and the friction between the fibers also increases, so that many laundry is lifted to the left and right, and cedar is efficiently performed.

  The rotation during dehydration is performed in the clockwise direction opposite to the washing rotation. When the rotating drum rotates and dehydrates, there is no protrusion in the opposite direction to the rotation, so that the laundry is smoothly dispersed over the top of the baffle as shown in FIG. Vibration is reduced because the uneven load is dispersed.

  As an example of use of the present invention, an optimum effect can be expected when used in a household horizontal rotating drum type washing machine.

Claims (1)

In a horizontal rotating drum type washing machine that uses the same rotating drum for washing and dewatering, a three-dimensional protrusion structure that extends in the horizontal axis direction, called a baffle for agitating the laundry, has a substantially non-sectional cross section. It forms an equilateral triangle, the base of the unequal triangle is in contact with the inner wall of the rotating drum, and the inner angle of one base angle that is in contact with the inner wall of the rotating drum of the unequal triangle is one of the inner angles formed by the three vertices. The surface including one side connecting the apex of the base angle and the apex at the position corresponding to the base of the unequal triangle is a surface structure that does not hinder the movement of the laundry, and the protrusion thereof The cross section of the structure is the angle formed by the opposite side of the sharpest inner angle and the tangent line that touches the opposite side and the circumference of the rotating drum. The baffle is characterized by its shape.