JP3692139B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a so-called top-open type drum-type washing machine having an inner lid on an upper part of a water tank that houses a drum.

2. Description of the Related Art Conventionally, in a drum-type washing machine, a packing is provided between a laundry doorway and a door that opens and closes the laundry door in order to seal the space therebetween. In this case, the packing is attached to the laundry entrance / exit side or the door side, and the packing is provided with a fin-like lip that contacts the mating side (see, for example, Patent Document 1 and Patent Document 2). In this case, the packing has only one lip.
Japanese Patent Laid-Open No. 10-328473 (FIG. 3) Japanese Patent Laid-Open No. 2001-162086 (FIG. 1)

  By the way, in the drum type washing machine, there is a so-called top open type. This is provided with an inner lid on the upper part of the water tank arranged in the outer box, a drum lid on the drum body rotatably arranged in the water tank, and further provided on the upper part of the outer box. The top cover is provided with a washing lid as an outer lid. In this case, a packing is provided on the opening side or the inner lid side of the water tank, and the packing is brought into contact with the mating side, whereby the space between them is sealed watertight.

  However, in this type of drum-type washing machine, there is a situation that water easily enters the contact portion between the opening of the water tank and the inner lid due to the centrifugal force accompanying the rotation of the drum. For this reason, as described above, if the packing lip has only one stage, the sealing performance becomes more problematic.

  The present invention has been made in view of the above circumstances, and an object thereof is to improve the sealing performance between a water tank opening and an inner lid that opens and closes the opening in a so-called top open type drum-type washing machine. It is in providing the drum type washing machine which can aim at.

  In order to achieve the above-mentioned object, the invention of claim 1 is provided with a water tank disposed in an outer box and a water tank disposed in the water tank so as to be rotatable about an axis oriented in a substantially horizontal direction. A drum having a number of dewatering holes, a drum lid provided on the drum body so as to open and close an opening formed on the drum part, and an upper part of the water tank. In a drum type washing machine comprising: an inner lid provided to open and close an opening; and a packing provided to seal the space between the inner lid and the inner lid at the periphery of the opening of the water tank, The packing is provided with a plurality of stages of lips so as to have a plurality of stages in the inner and outer directions of the water tank, and a portion of the drum body corresponding to a contact portion between each lip of the packing and the inner lid is provided with the dehydration. It is characterized by having a configuration in which no hole is formed.

  According to the present invention described above, in the so-called top open type drum-type washing machine having an inner lid at the top of the water tank, the lip of the packing provided between the peripheral edge of the opening of the water tank and the inner lid is Since it contacts with the other party in a plurality of stages in the inner and outer directions of the water tank, the sealing performance can be improved as compared with the case where the lip is only one stage. Further, in the drum body, the dewatering hole is not formed in the portion corresponding to the contact portion between each lip and the inner lid of the packing, so that the water discharged from the dewatering hole of the drum body is Since it is difficult to directly contact the contact portion between the lip and the inner lid, it is difficult for water to enter the contact portion.

An embodiment of the present invention will be described below with reference to the drawings.
First, FIG. 4 shows an external perspective view of a top open type drum type washing machine to which the present invention is applied. In FIG. 4, the outer box main body portion 1 has left and right side surfaces and a back surface, and is substantially U-shaped when viewed from above. A front lid 2 is attached to the front surface of the outer box main body 1. The outer box main body 1 and the front lid 2 constitute an outer box 3 having a rectangular box shape.

  A top cover 4 is attached to the top of the outer box 3. The top cover 4 is provided with a laundry entrance 5 and a laundry lid 6 for opening and closing the laundry entrance 5. The washing lid 6 functions as an outer lid, and has a bi-fold type structure in which the front lid portion 6a and the rear lid portion 6b are foldably connected, and the rear end portion of the rear lid portion 6b is the top. The cover 4 is pivotally supported. An operation panel 7 is provided on the right front portion of the top cover 4.

  FIG. 3 shows the internal structure shown with the outer box 3 and the top cover 4 removed. In FIG. 3, the water tank 10 has a drum shape, and the drum 11 is disposed in the water tank 10 so as to be rotatable about a shaft 12 oriented in a substantially horizontal direction. The drum 11 is rotationally driven by a drum motor (not shown).

  As shown in FIGS. 1 and 2, the drum 11 includes a cylindrical body 13 and side plates 14 (only one side is shown in FIGS. 1 and 2) disposed on both sides in the axial direction of the body 13. It is configured by combining. A large number of dewatering holes 15 and 16 are formed in the body portion 13, and a balancer 17 is attached to the outer surface of the side plate 14. In addition, an opening (not shown) for taking in and out the laundry is formed at one place on the body 13, and a drum lid 18 (see FIG. 3) for opening and closing the opening is provided to be openable and closable. ing.

  As shown in FIGS. 1 and 2, the water tank 10 includes a water tank body 20, and water tank side plates 21 (shown only on one side in FIGS. 1 and 2) disposed on both sides in the axial direction of the water tank body 20. It is configured by combining. A rectangular opening 22 is formed in the upper part of the water tank 10, and a packing mounting frame 23 is attached to the peripheral edge of the opening 22, and the packing mounting frame 23 has an elastic rectangular frame shape. The packing 24 is attached. In addition, an inner lid 25 that opens and closes the opening 22 is provided at the top of the water tank 10. The inner lid 25 is pivotally supported on the upper part of the water tank 10 via a hinge part 26 and is locked in a closed state by a lock mechanism 27 provided at the front part. It has a possible configuration.

  The inner lid 25 is formed in a hollow shape by combining the inner plate 29 and the outer plate 30, and is configured to be relatively thick in the inner and outer directions. On the outer peripheral edge portion of the inner plate 29 which is the lower surface side of the inner lid 25, a water return portion 31 having an inverted U shape with the lower surface side opened is formed in a frame shape. A downward rib 32 is provided on the lower surface of the inner plate 29 so as to be located on the inner side of the water return portion 31, and a groove portion 33 having an open lower surface is provided on the inner side of the rib 32. Is formed.

  Here, on the side surface of the inner lid 25, the outer surface of the water return portion 31 is referred to as a first contacted surface 34, and the side surface existing inside the first contacted surface 34 is referred to as a second contacted surface 35. These first and second contacted surfaces 34 and 35 are substantially vertical surfaces. Further, a portion located outside the rib 32 on the lower surface of the inner plate 29 is referred to as a third contacted surface 36. These first to third contacted surfaces 34 to 36 have steps in the inner lid 25 and have a step in a direction intersecting with the inner / outer direction (in the direction of arrow A in FIG. 1) which is the direction of water penetration. It has become a surface.

  Next, the packing 24 will be described in detail mainly with reference to FIGS. 1 and 2. The packing 24 is connected to a flat upper surface portion 24a arranged along the upper surface of the packing mounting frame 23, a first side surface portion 24b suspended from the upper surface portion 24a, and a lower end of the first side surface portion 24b. A stepped portion 24c substantially parallel to the upper surface portion 24a and a second side surface portion 24d hanging from the stepped portion 24c and substantially parallel to the first side surface portion 24b are integrally formed.

  And the upward protruding protrusion part 40 is provided in frame shape at the outer peripheral part of the upper surface part 24a. The protruding portion 40 is positioned outside the inner lid 25 in a closed state of the inner lid 25. A first lip 41 is provided in a frame shape on the first side surface portion 24b so as to be positioned at an intermediate portion in the vertical direction. The first lip 41 is inclined downward in the downward direction, which is the closing direction of the inner lid 25, and obliquely faces the first contacted surface 34 as shown in FIG. 1 in the closed state of the inner lid 25. It is the structure which contacts.

  The second side surface portion 24d is provided with a second lip 42 in a frame shape so as to be positioned at an intermediate portion in the vertical direction. The second lip 42 protrudes laterally along the opening 22 of the water tank 10 and, when the inner lid 25 is closed, as shown in FIG. It is the structure which contacts from the direction orthogonal to 35.

  A third lip 43 is provided in a frame shape at the lower end portion of the second side surface portion 24d. The third lip 43 protrudes inward in a state substantially parallel to the second lip 42, and the tip end portion 43a protrudes upward. When the inner lid 25 is closed, the third lip 43 is shown in FIG. 1, the third contacted surface 36 is overlapped with the third contacted surface 36 so as to cover the third contacted surface 36, which is the lower surface of the inner lid 25, from below, and the tip 43 a is a third contacted surface. The surface 36 is in line contact.

  In the drum portion 13 of the drum 11, as shown in FIG. 1, a dewatering hole is formed in a portion 13 a corresponding to a contact portion between the first to third lips 41 to 43 of the packing 24 and the inner lid 25. However, a dewatering hole 15 is formed inside the contact portion (left side in FIG. 1), and a dewatering hole 16 is formed outside the contact portion (right side in FIG. 1).

  In the above configuration, when putting laundry into or out of the drum 11, the laundry lid 6 serving as an outer lid is opened, the inner lid 25 is opened as shown in FIG. Perform with the open. The washing operation and the drying operation are performed with the washing lid 6, the inner lid 25, and the drum lid 18 closed.

  Here, in a state where the inner lid 25 is closed, as shown in FIG. 1, the first to third lips 41 to 43 provided on the packing 24 so as to have three stages in the inner and outer directions A of the water tank 10 are closed. By contacting the first to third contacted surfaces 34 to 36 of the inner lid 25 in a state, the space between the water tank 10 and the inner lid 25 is sealed in a watertight manner.

  In this case, since the first to third lips 41 to 43 are provided in three stages in the inner and outer direction A of the water tank 10, the sealing performance can be further improved as compared with the case where the lip has only one stage. . The first to third lips 41 to 43 are located on the inner lid 25 and have different surfaces in the direction intersecting with the inner / outer direction A, which is the direction of water intrusion. Since it is the structure which contacts 36, sealing performance can be improved further.

  Of the first to third lips 41 to 43, the first lip 41 located on the outermost side is the second and third lips 42, located on the inner side of the first lip 41. 43, since it is arranged at a position farther outward from the opening 22 of the water tank 10, the laundry is difficult to hit the first lip 41 when the laundry is put in and out, and the first lip 41 is deformed. It is difficult to improve durability. Further, since the first lip 41 is inclined downward along the closing direction of the inner lid 25, the resistance by the first lip 41 is small when the inner lid 25 is closed, and the inner lid 25 is easily closed. it can.

  Of the first to third lips 41 to 43, the second lip 42 located in the middle is in contact with the second contacted surface 35, which is a substantially vertical surface of the inner lid 25, from a direction substantially orthogonal to the second contacted surface 35. Thus, since it has the structure which protruded to the side along the opening part 22 of the water tank 10, even if the laundry touches the second lip 42 when putting in and out the laundry, the second lip 42 is easy to follow the putting in and out of the laundry and is not easily deformed, and can prevent the durability from being lowered as much as possible.

  Among the first to third lips 41 to 43, the third lip 43 located on the innermost side covers the third contacted surface 36, which is the lower surface of the inner lid 25, from below. Since the third lip 43 overlaps with the contacted surface 36 of the water, it is possible to prevent the water from proceeding outward in the inner / outer direction A of the water tank 10 as much as possible, thereby further improving the sealing performance. it can. Further, the third lip 43 has a configuration in which the tip end portion 43 a is in line contact with the third contacted surface 36, so that the third lip 43 is not affected by the distortion of the inner lid 25 or the packing 24. It is difficult to receive and sealability can be secured.

  Since the rib 32 is provided on the lower surface of the inner lid 25 on the inner side (left side in FIG. 1) of the third lip 43, the water flowing along the lower surface of the inner lid 25 is on the third lip 43 side ( Proceeding to the arrow B in FIG. 1 is prevented by the rib 32, and it becomes difficult for water to enter the third lip 43 side. In this case, since the groove 33 is provided inside the rib 32 on the lower surface of the inner lid 25, the water on the lower surface of the inner lid 25 is more difficult to travel to the third lip 43 side.

  In the inner lid 25, the water return portion 31 is provided in the vicinity of the packing 24 in contact with the first lip 41 and the second lip 42, so that the contact portion between the inner lid 25 and the packing 24 is provided. Even if water enters the water, the water return portion 31 weakens the momentum of the water and restricts further intrusion of water.

  In the body portion 13 of the drum 11, no dewatering holes are formed in the portions corresponding to the contact portions between the lips 41 to 43 of the packing 24 and the inner lid 25, and the dewatering holes 15 are formed both inside and outside the contact portions. , 16 is formed so that water coming out of the dewatering holes 15, 16 of the body portion 13 is less likely to directly contact the contact portion between the lips 41-43 of the packing 24 and the inner lid 25. It becomes difficult for water to enter the part.

The present invention is not limited to the above-described embodiments, and can be modified or expanded as follows.
The lip of the packing 24 is not limited to three stages, and may be two stages or four or more stages.

The longitudinal cross-sectional view of the principal part in the state which closed the inner lid | cover which shows one Example of this invention Longitudinal sectional view of the main part with the inner lid slightly opened The perspective view of the principal part shown in the state which removed the outer case and the top cover and opened the inner lid External perspective view of drum-type washing machine

Explanation of symbols

3 is an outer box, 4 is a top cover, 6 is a washing lid, 10 is a water tank, 11 is a drum, 12 is a shaft, 13 is a trunk, 13a is a portion corresponding to the contact portion, 15 and 16 are dewatering holes, 18 is Drum lid, 22 is an opening, 23 is a packing mounting frame, 24 is packing, 25 is an inner lid, 31 is a water return portion, 32 is a rib, 34 is a first contacted surface, and 35 is a second contacted surface. , 36 is a third contacted surface, 41 is a first lip, 42 is a second lip, 43 is a third lip, and 43a is a tip.

Claims (2)

A water tank disposed in the outer box;
In this water tank, a drum that is rotatably arranged around an axis oriented in a substantially horizontal direction, and has a number of dewatering holes in the body,
A drum lid provided on the drum body so as to open and close an opening formed in the drum;
An inner lid provided at the top of the water tank so as to open and close an opening formed in the water tank;
In the drum-type washing machine provided with a packing provided to seal the space between the inner lid and the inner lid at the peripheral edge of the opening of the water tank,
The packing is provided with a plurality of stages of lips so as to form a plurality of stages in the inner and outer directions of the water tank, and a portion of the drum body corresponding to a contact portion between each lip of the packing and the inner lid A drum-type washing machine characterized in that a dewatering hole is not formed. 2. The drum-type laundry according to claim 1, wherein a dewatering hole is formed inside and outside a portion of the drum body corresponding to a contact portion between each lip of the packing and the inner lid. Machine.

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