JP2008000252A - Drum washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum washing machine preventing the clothes from being damaged as the clothes rub against a rubber cushion, preventing the rubber cushion from tearing, and preventing the clothes from falling from a gap or from ripping. <P>SOLUTION: The washing machine comprises a washing machine casing 2; a water tub 3 with a rotary drum 5 rotatably supported inside; the cylindrical rubber cushion 12 connecting a water-tub opening 14 of the water tub 3 and a casing opening 17 of the washing machine; and a water feeding means 7. An annular cover member 11 made of stainless steel etc., is attached along the whole circumference of the water tub opening 14, and water from the water feeding means 7 is fed into the rotary drum 5 via a through-hole 22 provided in the annular cover member 11. Accordingly, the structure to widely spray water inward from above the rotary drum, while preventing contact of the sticking clothes with the rubber cushion 12 and the leakage through the gap in a clothes slot 25 in the rotary drum 5 and through the gap in the water tub opening 14, can be easily and securely achieved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine that cleans laundry stored in a rotating drum by rotationally driving a rotating drum disposed in a water tank.

  Conventionally, this type of drum-type washing machine is generally arranged so that the rotating drum has a horizontal axis of rotation, so that it is necessary to bend down when putting in and out the laundry. When it is installed in a narrow place such as a place, it is often difficult to put in and out the laundry, and there is a problem that is difficult to adapt to a small living environment. In order to solve the basic problem of the drum type washing machine, the inventors of the present invention are inclined at a predetermined angle so that the opening side of the rotating drum and the water tub containing the rotating drum is in an upward direction. There has been proposed a drum-type washing machine of an oblique drum type that is easy to use for all persons having different physiques and postures such as users (see, for example, Patent Document 1).

  Furthermore, the operation for putting the laundry in and out of the rotating drum can be made easier, and the inside of the rotating drum can be viewed from the door provided on the front surface of the washing machine casing so that no blind spot is generated. In order to prevent forgetting to take out the laundry, as shown in the conventional example of FIG. 3, the laundry entrance is a circular opening that leads to the door 32 of the water tank 31 that houses the rotating drum 30. The center C of 33 is aligned with the rotation center axis R of the rotary drum 30.

  Further, the washing machine casing 34 is fixed, and the water tank 31 is supported in a vibration-proof manner by the washing machine casing 34 so as to be swingable.

  Since the rotating drum 30 rotates during dehydration and washing, the water tub 31 swings up and down and left and right. However, the connection between the washing machine housing 34 and the vibration portion of the water tub 31 and the rotating drum 30 is connected to the vibration-proof rubber 35. Are linked.

  Further, since the rotating drum 30 rotates at a high speed, an annular gap 41 must be provided between the non-rotating portion of the water tank 31. However, clothing or the like bites into the gap 41 or small clothes flow out. In order to prevent this, a substantially annular rib portion 35a is extended from the vibration-proof rubber 35 (see, for example, Patent Document 2).

  In general, the tip 35b of the rib 35a on the rotating drum 30 side is configured close to the opening edge 30a of the rotating drum 30 in order to prevent clothes from flowing out.

  Further, in this type of drum-type washing machine, a configuration is adopted in which the wettability of the clothes is increased in order to improve the washing performance and the rinsing performance of the clothes 40 put in the rotary drum 30.

  In particular, in the inclined drum type configuration in which the rotating drum 30 is inclined, the water level from the bottom wall of the water supplied and the rotating drum 30 is high at the rear of the water tank 31, but the water level is low at the front. In order to ensure the rinsing performance of the clothing distributed in front of the rotating drum, a configuration in which water is directly applied to the clothing from above the rotating drum 30 is employed.

Therefore, in the conventional example of FIG. 3, a hole 42 is provided in a part of the vibration isolating rubber 35, a cylindrical pipe-shaped shower constituting part 36 is inserted into the hole 42 of the anti-vibration rubber 35, and the water ejection part 37 is In addition, the water ejection portion 37 is provided with a notch 38 in a part of the portion where the water ejection portion 37 touches the substantially annular rib portion 35a, and the water ejection of the shower constituting portion 36 is caused by the substantially annular rib portion 35a. Instead of hitting, it is configured to directly touch the laundry 40 (see, for example, Patent Document 3).
JP 2005-137441 A Japanese Patent Laid-Open No. 10-211382 JP-A-10-263282

  However, in the above-described conventional configuration, the hole portion 42 into which the cylindrical pipe-shaped shower component 36 is inserted is formed in the vibration-proof rubber 35 that supports the vibration of the oscillating water tank 31. There are problems such as stress concentration, fatigue failure progressing from this part, and the vibration-proofing effect being reduced when the thickness is increased to improve the strength.

  Furthermore, the production of the anti-vibration rubber 35 is complicated only by forming the substantially annular rib portion 35a, and there are disadvantages in productivity such as a long processing time. 42 is constructed, the processing is further complicated.

  Further, when the washing or dehydration process is performed in a state where the laundry 40 protrudes from the opening edge portion 30a of the rotating drum 30, the laundry 40 comes into contact with the rib portion 35a, and the anti-vibration rubber 35 and the laundry 40 are worn. There was a problem of damage.

  The present invention solves the above-mentioned conventional problems, and does not constitute a rib from the vibration-proof rubber, but the vibration-proof rubber has a simple structure, and instead of the rib, the portion is made of a SUS (stainless steel) material. It is an object of the present invention to provide a drum-type washing machine that eliminates the conventional problems by using separate parts such as the above and supplying water from above the rotating drum.

  In order to solve the above-described conventional problems, the drum type washing machine of the present invention eliminates the substantially annular rib as in the conventional example configured in the vibration proof rubber connected to the washing machine casing and the vibration part. The part is composed of another part such as a SUS (stainless steel) material.

  The drum type washing machine of the present invention is easy to put in clothes, prevents clothes from being caught between the water tank and the rotating drum, and touches the anti-vibration rubber when dewatering and washing, It is possible to prevent tearing and to prevent the vibration isolating rubber from being torn.

  In addition, since the structure of the vibration-proof rubber mold is simplified and the molding time can be shortened, productivity can be improved.

  A first invention has a rotary drum having a circular clothes insertion port at the front and having a rotation center axis inclined downward from the horizontal or from the front to the rear, and a center on a substantially extension line of the rotation center axis. A water tank that has a circular water tank opening and accommodates the rotating drum in a rotatable manner, and a circular housing opening that has a center on a substantially extension line of the rotation center axis, and the water tank can move freely. A washing machine housing to be housed, a door body attached to the washing machine housing and covering the housing opening so as to be openable and closable, and a substantially cylindrical shape connecting the water tank opening and the housing opening. The anti-vibration rubber and water supply means for controlling the water supply into the rotating drum are provided, and the anti-vibration rubber partially folds forward and outward partway along the way from the housing opening to the water tank opening. As a result, a bulging portion bulging on the outer peripheral side is formed and the water tank opening is provided. The inner surface of the front surface of the water tank covers a part of the gap between the clothing inlet and the water tank opening and at least a part of the bulging part of the anti-vibration rubber over the entire circumference of the water tank opening. An annular cover member configured as described above is provided, and the annular cover member is provided with a through-hole for directly injecting water from the water supply means into the rotary drum. A structure that substantially reduces the gap between the inner periphery of the mouth and prevents the outflow of small clothes, etc., improves the reliability of the anti-vibration rubber, and directly injects water into the clothes to improve wettability Can be easily done.

  In the second invention, the annular covering member of the first invention is composed of a metal member such as stainless steel, and the friction generated due to the high specific heat capacity and low heat generation and high thermal conductivity. Because heat is dissipated quickly, clothing will not melt or tear due to heat.

  In the third invention, particularly in the first or second invention, one end communicates with the water supply means between the inner surface of the front surface of the water tank and the annular covering member, and the other end supplies water to the corresponding position of the through hole. A water injection member having a water injection hole through which water supplied from the means is discharged is provided, and it is not necessary to provide a water injection structure in the vibration-proof rubber or the like.

  In a fourth aspect of the invention, particularly in the third aspect of the invention, the water tank is provided with a communication port that communicates with the water supply means, and the water injection member is inserted into the communication port, and the body portion is formed on the inner surface of the front surface of the water tank. It is fixed, piping from the water supply means is simplified, and workability during assembly and repair is improved.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the through hole is provided at a position above the upper half of the water tank opening, so that direct water injection into clothing is more effective. Made.

(Embodiment 1)
FIG. 1 is a sectional view of a drum-type washing machine according to the first embodiment of the present invention, and FIG. 2 is a sectional view of an essential part of the drum-type washing machine.

  In FIG. 1, a rotating drum 5 having a circular clothing insertion port 25 in front and a water tank 3 that accommodates the rotating drum 5 are disposed in the washing machine housing 2 by being inclined at an angle θ from the horizontal direction to the upward direction. Thus, a drum-type washing machine of an oblique drum type that makes it easy to put laundry in and out of the rotary drum 5 from the door body 8 provided on the inclined surface where the front surface of the washing machine casing 2 is inclined is configured.

  The rotating drum 5 has a bottomed cylindrical opening side on the front side of the washing machine housing 2 and a bottom surface on the back side of the washing machine housing 2 so that the rotation axis R is from the front side to the back side. The rotating shaft 15 is pivotally supported by a bearing 16 provided on the back surface of the water tank 3 so as to be inclined downward at an angle θ.

  A driven pulley 17b is attached to the rotating shaft 15, and a driving belt 19 is installed between the rotating pulley 15a of the drum driving motor 4 attached to the lower surface of the water tank 3 and a driving pulley 17a. The rotary drum 5 is rotationally driven by the drum drive motor 4. A number of through holes 20 are formed in the peripheral surface of the rotating drum 5 so that water can flow between the inside of the water tank 3 and the laundry 13 is lifted upward by the rotation of the rotating drum 5. It is configured so as to perform the action of tapping and washing.

  A water tank opening 14 serving as a laundry entrance / exit is provided on the front side of the bottomed cylindrical water tank 3, and its center C coincides with the center of the clothes input port 25 of the rotating drum 5 (the rotation axis R). ) Is coaxial, the center of the door body 8 is also substantially coincident with the center line of the water tank opening 14, and the inner diameter of the garment insertion port 25 is set as large as possible to facilitate the garment entry / exit operation.

  Thus, since the center position C of the water tank opening 14 and the door body 8 is coaxial with the rotation axis R of the rotary drum 5 and is inclined obliquely upward, the door body 8 formed in a circular shape. When the door body 8 is opened and the inside of the rotating drum 5 is looked through the water tank opening 14 even when the diameter of the water tank and the opening diameter of the water tank opening 14 are restricted, the number of blind spots is reduced.

  Therefore, since the laundry 13 accommodated in the rotating drum 5 can be seen over a wide range, it becomes difficult to forget to take out the laundry. In particular, in the configuration in which the rotary drum 5 is inclined and the door body 8 is provided on the inclined surface of the washing machine housing 2 corresponding to the inclination angle of the rotary drum 5 as in the drum type washing machine according to the present embodiment. The interior of the rotating drum 5 can be looked over in a wider range.

  Further, the washing machine housing 2 and the vibration part of the water tub 3 are connected in a watertight manner by a vibration-proof rubber 12 made of a flexible elastic body, and the front end of the rotating drum 5 and the front end of the water tub 3 are connected. The gap between the portions is configured to be covered with an annular covering member 11 such as a SUS (stainless steel) material.

  The annular covering member 11 is formed in a donut shape, and the central opening 22 is positioned approximately in the middle between the water tank opening 14 of the water tank 3 and the clothing inlet 25 of the rotating drum 5. The gap with the inlet 25 is substantially reduced.

  The anti-vibration rubber 12 forms a cross-sectional shape in the middle of the connection between the washing machine casing 2 and the vibration part of the water tub 3 with a substantially S-shaped cross section, and a bulging portion 21 for improving flexibility. The vibration of the water tank 3 is absorbed.

  A substantially cylindrical water injection member 9 is disposed above the door body 8 side of the water tub 3, and from a water supply means (first water supply valve) 7 provided inside the upper part of the washing machine housing 2 through a first water injection hose 18. Water is sprayed onto the laundry 13 inside the rotating drum 5 from above, and the water supply state from the water injection member 9 spreads in a substantially fan shape as shown by the shaded area A in FIG. The arrangement of the water injection member 9 is provided at a position above the upper half of the circular water tank opening 14 so that effective water injection into the laundry 13 is performed.

  Water supplied from the second water supply valve 27 passes through the detergent case 28 and is poured into the water tank 3 from the water tank water inlet 29. The water supplied from the water tank inlet 29 is not directly poured into the laundry 13, but is poured into the rotating drum 5 through a large number of through holes 20 on the peripheral surface of the rotating drum 5.

  The details around the water injection member 9 will be described with reference to the detailed sectional view of FIG.

  The annular covering member 11 forms a through hole 22 that is directed inwardly from the clothing input port 25 of the rotary drum 5, and the water injection cap 24 having the water injection hole 23 at a position corresponding to the through hole 22 is the annular covering member 11. And the front plate portion 3f of the water tank opening 14 are held so that a substantially cylindrical water injection member 9 is mounted inside.

  The other end of the water injection member 9 is inserted into a cylindrical connecting portion 6 having a communication port 26 formed in the water tank 3, and this cylindrical connecting portion 6 communicates with the first water supply hose 18.

  About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The water supply means (first water supply valve) 7 is operated when enhancing the wettability of the laundry 13 introduced at the beginning of the washing process, or when spraying fresh water directly on the clothes during the rinsing process to increase the rinsing effect. Water is supplied so as to spread widely inward from above the rotating drum 5.

  The annular covering member 11 prevents contact with the water tank opening 14 of the water tank 3 and the vibration isolating rubber 12 when the laundry 13 protrudes from the clothes insertion port 25 during the washing or dehydration process, and the water injection member 9 and The water injection cap 24 is held between the front plate portion 3 f of the water tank 3 and water is smoothly supplied from the water supply means (first water supply valve) 7.

  As described above, in the present embodiment, since the annular covering member 11 is made of SUS material, even when the laundry 13 protrudes from the clothing insertion port 25, damage to clothing can be reduced, A configuration that improves the wettability and rinsing effect of clothing can be realized easily and reliably.

  In addition, because the shape of the anti-vibration rubber is a simplified shape that eliminates the ribs that were configured in the conventional example, the structure of the production mold is simplified and the molding time can be shortened, improving productivity. it can.

  The configuration of the embodiment described above is an example in which the configuration is applied to a drum-type washing machine of an oblique drum type in which the rotary drum is disposed in an inclined manner, but the same applies to a general configuration in which the rotary drum is disposed in the horizontal direction. be able to.

  As described above, in the drum type washing machine according to the present invention, the rib is removed from the vibration-proof rubber that connects the washing machine casing and the vibration part, and the part is constituted by another part such as SUS (stainless steel). As a result, the garment is rubbed into the anti-vibration rubber, and the anti-vibration rubber is torn, or the ribs of the anti-vibration rubber are deformed or worn, resulting in a large gap between the aquarium and the rotating drum. Can be prevented. In addition, the production mold for the anti-vibration rubber is simplified and the molding time can be shortened, so that the productivity can be improved.

Sectional drawing of the drum type washing machine in Embodiment 1 of this invention Cross section of the main part of the drum type washing machine Sectional view of a conventional drum-type washing machine

Explanation of symbols

2 Washing machine housing 3 Water tank 5 Rotating drum 7 Water supply means (first water supply valve)
DESCRIPTION OF SYMBOLS 8 Door body 9 Water injection member 11 Annular covering member 12 Anti-vibration rubber 14 Water tank opening 17 Case opening 21 Swelling part 22 Through hole 23 Water injection hole 25 Clothing input port 26 Communication port

Claims (5)

A rotary drum having a circular clothing insertion port in the front and having a rotation center shaft inclined horizontally or from the front to the rear downward, and a circular water tank opening having a center substantially on the extension line of the rotation center shaft And a washing machine housing having a circular housing opening having a center on a substantially extension line of the rotation center shaft and housing the water bath slidably. A door body that is attached to the washing machine housing and covers the housing opening so as to be openable and closable, a substantially cylindrical anti-vibration rubber that connects the water tank opening and the housing opening, and A water supply means for controlling the water supply into the rotating drum, and the anti-vibration rubber swells to the outer peripheral side by partially folding forward and outward partway from the housing opening to the water tank opening. Forming the bulging part that has been squeezed out of the water tank having the water tank opening An inner surface of the surface is configured to cover a part of the gap between the clothing inlet and the water tank opening and at least a part of the bulging part of the vibration isolating rubber over the entire circumference of the water tank opening. A drum-type washing machine provided with a through hole for directly pouring water from the water supply means into the rotating drum. The drum-type washing machine according to claim 1, wherein the annular covering member is made of a metal member such as stainless steel. Between the inner surface of the front surface of the water tank and the annular cover member, a water injection member having one end communicating with the water supply means and the other end having a water injection hole for discharging water from the water supply means at a corresponding position of the through hole is provided. The drum type washing machine according to claim 1 or 2. The drum according to claim 3, wherein the water tank is provided with a communication port communicating with the water supply means, and the water injection member is inserted into the communication port, and the body portion is fixed to the inner surface of the front surface of the water tank. Type washing machine. The drum-type washing machine according to any one of claims 1 to 4, wherein the through hole is provided at a position above the upper half of the water tank opening.

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