JP2023041132A - Drum type washing machine - Google Patents

Abstract

To provide a drum type washing machine capable of suppressing water leakage to the outside of a body.SOLUTION: A drum type washing machine includes: a body; a water tub; a rotary drum; a body opening part provided at the body, and for inputting laundry to the rotary drum; a lid body having an inner lid, and for openably/closably covering the body opening part; a water tub opening part provided at the water tub, and opposing to the body opening part; and a packing member provided between the body opening part and the water tub opening part. The packing member includes: an annular seal part having a seal inner peripheral surface, and for sealing a gap between the body opening part and the water tub opening part; and an annular lip part having a lip front surface coming into contact with the inner lid in a state where the lid body is closed, and formed so as to extend toward a central axis of the rotary drum from the body opening part side of the seal inner peripheral surface. On a cross section of the packing member including the central axis, the annular lip part has a thickness gradually increasing toward the central axis from the seal inner peripheral surface.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to drum-type washing machines.

Patent Literature 1 discloses a drum-type washing machine that prevents large water leakage due to detachment of a packing member. This drum-type washing machine comprises a water tank which is elastically supported in the main body for rocking movement and has an opening on the front side, a front plate having an opening provided inside the front face of the main body, and an opening in the front plate. A lid that can be freely opened and closed, an inner lid that is provided on the lid and protrudes inward from the opening of the front plate, and a packing member made of an elastic material that connects the opening of the front plate and the opening of the water tank. The packing member has a lip portion that contacts and seals the inner lid when the lid is closed.

JP 2014-90778 A

The present disclosure provides a drum-type washing machine capable of suppressing water leakage to the outside of the main body.

A drum-type washing machine according to the present disclosure includes a main body, a water tank supported in the main body, a rotating drum rotatably provided in the water tank, and a main body provided in the main body for putting laundry into the rotating drum. an opening, a lid body for freely opening and closing the main body opening, a water tank opening provided in the water tank and facing the main body opening, a packing member provided between the main body opening and the water tank opening, The lid body has an inner lid that bulges inward of the main body, the packing member has a sealing inner peripheral surface, and an annular seal portion that seals the gap between the main body opening and the water tank opening. an annular lip portion having a lip front surface that abuts against the inner lid when the lid body is closed, and is formed to extend from the main body opening side of the inner peripheral surface of the seal toward the central axis of the rotating drum; , and in the cross section of the packing member including the central axis, the annular lip portion gradually increases in thickness from the inner peripheral surface of the seal toward the central axis.

The drum-type washing machine according to the present disclosure can suppress water leakage to the outside of the main body.

Appearance perspective view of drum-type washing machine according to Embodiment 1 Sectional view of drum-type washing machine according to Embodiment 1 Enlarged cross-sectional view around the packing member of the drum-type washing machine according to Embodiment 1 Front view of the packing member of the drum-type washing machine according to Embodiment 1 Sectional view of the annular lip portion of the drum-type washing machine according to Embodiment 1 Sectional view of the inner lid and the annular lip part in a state where the lid body of the drum-type washing machine according to Embodiment 1 is closed

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 6. FIG.

[1-1. composition]
[1-1-1. overall structure]
As shown in FIGS. 1 and 2, drum-type washing machine 100 has main body 1 . The main body 1 includes side plates 2 forming left and right side surfaces of the main body 1, a detachable back plate 3 forming the rear surface of the main body 1, a plurality of sheet metal connecting plates (not shown) connecting the side plates 2, A top plate 4 made of synthetic resin forming the upper surface of the main body 1 and a front panel member 5 forming the front surface of the main body 1 are included. Above the front panel member 5, there is provided an operation panel 8 on which a switch operation section 6 for performing various settings and a display section 7 for displaying the set contents are arranged.

Inside the main body 1, a bottomed cylindrical water tank 9 is provided. The water tank 9 is arranged such that a water tank opening 9a forming an opening faces forward.

The water tank 9 is elastically supported to be swingable by a suspension structure (not shown). A water supply line 13 and a water discharge line 14 are connected to the water tank 9, and by controlling a water supply valve (not shown) and a water discharge valve (not shown), water is supplied to and discharged from the water tank 9. is executed.

A rotary drum 10 formed in a cylindrical shape with a bottom is provided inside the water tank 9 . The rotating drum 10 is arranged so that a drum opening 10b forming an opening faces forward. The drum opening 10b faces the water tank opening 9a.

The rotating drum 10 is rotatably supported with the rotation axis X as a central axis. The rotation axis X is provided so as to be inclined downward from the front side to the back side of the main body 1 . The rotating drum 10 has holes 10a in its wall surface for allowing water to pass through the inside and outside of the rotating drum 10, and a plurality of baffles 11 for promoting agitation protrude from the inner peripheral wall. The rotating drum 10 is rotated in forward and reverse directions by a motor 12 attached to the back side of the water tank 9 .

In front of the front panel member 5, an opening member 15 having a body opening 15a for throwing laundry into the rotary drum 10 is provided. The body opening 15a faces the water tank opening 9a.

The opening member 15 is provided with a lid 16 that covers the body opening 15a in an openable and closable manner. The lid 16 has an inner lid 16a made of a rigid transparent material such as glass. The inner lid 16a is formed to protrude toward the rotating drum 10 side.

A circular front plate opening 17 a is formed in the front plate 17 located inside the front panel member 5 so as to correspond to the drum opening 10 b of the rotary drum 10 . The front plate 17 is covered with the front panel member 5 on the front side. The inner lid 16a protrudes toward the inner side of the rotary drum 10 from the front plate opening 17a. The front plate opening 17a faces the water tank opening 9a and the main body opening 15a.

[1-1-2. Configuration of Packing Member]
As shown in FIGS. 2 to 4, a packing member 20 made of an elastic material such as rubber is provided between the water tank opening 9a and the body opening 15a. Packing member 20 includes an annular seal portion 21 and an annular lip portion 25 . As shown in FIG. 4, the annular seal portion 21 and the annular lip portion 25 are formed in an annular shape.

As shown in FIG. 3, the annular seal portion 21 watertightly seals the gap between the water tank opening 9a and the body opening 15a. The annular seal portion 21 includes a ring-shaped cylindrical portion 21a that extends rearward from the front plate opening 17a, and a bulging portion 21b that bulges outward from the vicinity of the rear end of the cylindrical portion 21a and is fixed to the water tank opening 9a. and including. The annular seal portion 21 has a seal inner peripheral surface 21e facing the rotation axis X between the water tank opening 9a and the main body opening 15a. The annular lip portion 25 extends toward the rotation axis X from the seal inner peripheral surface 21e.

FIG. 5 shows an enlarged view of the periphery of the annular lip portion 25 with the lid body 16 opened in a cross section of the drum-type washing machine 100 including the rotation axis X. As shown in FIG. As shown in FIG. 5, the annular lip portion 25 includes a lip front surface 25a that constitutes the front surface of the annular lip portion 25, a lip inner peripheral surface 25b that constitutes the tip of the annular lip portion 25 and faces the rotation axis X, and an annular and a lip back surface 25 c that constitutes the back surface of the lip portion and faces the inside of the rotary drum 10 .

In the present embodiment, a portion of the annular lip portion 25 that is in the vicinity of the seal inner peripheral surface 21e is defined as a lip root portion 25f. A portion of the annular lip portion 25 near the lip inner peripheral surface 25b is defined as a lip tip portion 25g. The annular lip portion 25 has a shape in which the thickness gradually increases from the lip root portion 25f toward the lip tip portion 25g.

Note that the annular lip portion 25 has the same shape as long as the cross section includes the rotation axis X. As shown in FIG.

[1-2. motion]
The operation and action of the drum-type washing machine 100 configured as described above will be described below.

[1-2-1. Washing operation]
The user opens the lid 16, puts the laundry inside the rotary drum 10 through the body opening 15a, and closes the lid 16. - 特許庁Then, the user turns on the drum-type washing machine 100, sets the washing course using the operation panel 8, and starts the washing operation of the drum-type washing machine 100. FIG. In the washing operation, a washing process, a rinsing process and a spin-drying process are basically performed in order.

When the washing operation is started, as a washing process, washing water containing detergent is supplied into the water tub, and the rotary drum 10 rotates to agitate and wash the laundry. When the washing process is completed, dirty wash water in the water tank 9 is discharged. Next, as a rinsing process, tap water is newly supplied and the laundry is rinsed. When the rinse stroke is complete, the water supplied during the rinse stroke is drained. When the water is discharged, the rotating drum 10 rotates at high speed as a dehydration process, and the laundry is dehydrated by blowing water contained in the laundry by centrifugal force. When the dehydration process is completed, the washing operation ends and the drum-type washing machine 100 is automatically powered off.

[1-2-2. Movement of Annular Lip Portion Due to Opening and Closing of Lid]
FIG. 6 shows an enlarged view of the periphery of the annular lip portion 25 with the lid body 16 closed in a cross section of the drum-type washing machine 100 including the rotation axis X. As shown in FIG. As shown in FIG. 6 , when the user closes the lid 16 , the inner lid 16 a abuts against a portion of the lip front surface 25 a and pushes the annular lip portion 25 inward of the rotating drum 10 . The annular lip portion 25 in the present embodiment is configured to abut against the inner lid 16a at the lip distal end portion 25g.

The annular lip portion 25 is formed such that its thickness gradually increases from the lip root portion 25f toward the lip tip portion 25g. That is, the annular lip portion 25 is formed so that the rigidity increases from the lip root portion 25f toward the lip tip portion 25g.

When the annular lip portion 25 is pushed into the rotating drum 10 by the inner lid 16a, the lip tip portion 25g, which is the abutment position, is hard to bend due to its high rigidity and strongly abuts the inner lid 16a. On the other hand, since the lip base portion 25f side of the annular lip portion 25 from the contact position has lower rigidity than the lip inner peripheral surface 25b side from the contact position, it bends in a direction away from the inner lid 16a. As a result, the contact area between the inner lid 16a and the annular lip portion 25 is reduced, so that the contact surface pressure acting on the contact position is increased. Therefore, since the annular lip portion 25 can contact the inner lid 16a with a large contact surface pressure, it is possible to fill a minute gap at the contact portion between the inner lid 16a and the annular lip portion 25. of washing water to the outside of the main body 1 can be suppressed. In addition, since the annular lip portion 25 is formed so that the thickness gradually increases from the lip base portion 25f toward the lip tip portion 25g, even if the contact position slightly deviates from the predetermined position, The same effect as in the case of contact at a predetermined position can be obtained.

When the lip tip portion 25g is pushed by the inner lid 16a, the lip root portion 25f has low rigidity and bends in a direction away from the inner lid 16a. Therefore, the user can push the annular lip portion 25 into the rotary drum 10 with a small force to close the lid body 16 .

As shown in FIG. 6, when the lid body 16 is closed, an angle .delta., which is an angle formed by the lip inner peripheral surface 25b and the inner lid 16a on the rotation axis X side, is an obtuse angle. If the angle .delta. There is Since the annular lip portion 25 in the present embodiment is provided so that the angle δ is an obtuse angle, water droplets are prevented from remaining due to surface tension and flow down along the lip inner peripheral surface 25b. This can prevent water droplets from remaining between the inner lid 16a and the lip inner peripheral surface 25b. Therefore, washing water in the main body can be prevented from entering the contact portion between the annular lip portion 25 and the inner lid 16a.

[1-3. effect]
As described above, the drum-type washing machine 100 in this embodiment includes the main body 1, the water tank 9 supported in the main body 1, the rotating drum 10 rotatably provided in the water tank 9, and the drum 10 provided in the main body 1. a main body opening 15a for putting laundry into the rotating drum 10, a cover 16 covering the main body opening 15a so as to be openable and closable, and a water tank opening 9a provided in the water tank 9 and facing the main body opening 15a. and a packing member 20 provided between the body opening 15a and the water tank opening 9a. The lid body 16 has an inner lid 16 a protruding inward from the main body 1 . The packing member 20 has a seal inner peripheral surface 21e, and abuts on the annular seal portion 21 that seals the gap between the body opening 15a and the water tank opening 9a and the inner lid 16a when the lid body 16 is closed. an annular lip portion 25 having a lip front surface 25a and formed to extend toward the rotation axis X of the rotating drum 10 from the body opening 15a side of the seal inner peripheral surface 21e. In the cross section of the packing member 20 including the rotation axis X, the thickness of the annular lip portion 25 gradually increases from the seal inner peripheral surface 21e toward the rotation axis X. As shown in FIG.

As a result, the annular lip portion 25 has a structure in which the rigidity gradually increases from the seal inner peripheral surface 21e toward the rotation axis X. As shown in FIG. When the inner lid 16a presses the annular lip portion 25 toward the inside of the main body 1, the annular lip portion 25 is not easily bent at the contact position with the inner lid 16a, and the seal inner peripheral surface 21e is not easily bent from the contact position with the inner lid 16a. On the side, it is easy to bend in a direction away from the inner lid 16a. Therefore, the annular lip portion 25 has a small contact area with the inner lid 16a when the lid 16 is closed.

Therefore, when the lid 16 is closed, the annular lip portion 25 seals the lid 16 with a large contact surface pressure, and water leakage to the outside of the main body 1 can be suppressed.

As in the present embodiment, the annular lip portion 25 has the lip inner peripheral surface 25b, and in the cross section of the packing member 20 including the rotation axis X, the annular lip portion 25 extends from the seal inner peripheral surface 21e to the lip inner peripheral surface 25b. The thickness gradually increases toward the surface 25b, and the end 25h of the lip front surface 25a may contact the inner lid 16a when the lid 16 is closed.

As a result, the annular lip portion 25 can contact the inner lid 16a with a smaller contact area, and is less likely to bend away from the inner lid 16a on the lip inner peripheral surface 25b side from the contact position.

Therefore, the annular lip portion 25 can seal between the lid body 16 and the lid body 16 with a larger contact surface pressure, and can prevent washing water from accumulating between the lid body 16 and the end portion 25h of the lip front surface 25a.

As in the present embodiment, in the cross section of the packing member 20 and the inner lid 16a including the rotation axis X with the lid 16 closed, the angle formed by the lip inner peripheral surface 25b and the inner lid 16a is: The angle δ on the rotation axis X side may be an obtuse angle.

As a result, wash water can be prevented from remaining between the lip inner peripheral surface 25b and the inner lid 16a due to surface tension.

Therefore, it is possible to prevent the washing water in the main body 1 from entering the contact portion between the annular lip portion 25 and the inner lid 16a.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like. Also, it is possible to combine the constituent elements described in the first and second embodiments to form a new embodiment.

Therefore, other embodiments will be exemplified below.

In the first embodiment, as an example of the annular lip portion, the annular lip portion 25 formed so that the thickness gradually increases from the lip root portion 25f toward the lip tip portion 25g has been described. The shape of the annular lip portion 25 is not limited as long as the thickness of the annular lip portion gradually increases from the inner peripheral surface of the seal toward the central axis. The annular lip portion may not gradually increase in thickness, for example, on the central axis side of the contact position. The contact area between the annular lip portion and the inner lid is greatly affected by the shape of the annular lip portion from the root portion to the contact position, and is less affected by the shape on the central axis side than the contact position. is. The annular lip portion may have a partially constant thickness, for example, from the root portion of the annular lip portion to the contact position. However, it is desirable that the portion having a constant thickness occupies a small proportion of the portion from the root portion of the annular lip portion to the contact position.

The present disclosure is applicable to drum-type washing machines.

REFERENCE SIGNS LIST 1 main body 2 side plate 3 back plate 4 top plate 5 front panel member 6 switch operation part 7 display part 8 operation panel 9 water tank 9a water tank opening 10 rotating drum 10a hole 10b drum opening 11 baffle 12 motor 13 water supply pipe 14 drainage pipe Path 15 Opening member 15a Main body opening 16 Lid 16a Inner lid 17 Front plate 17a Front plate opening 20 Packing member 21 Annular seal 21a Cylindrical portion 21b Swelling portion 21e Seal inner peripheral surface 25 Annular lip 25a Lip front surface 25b Lip Inner peripheral surface 25c Lip back surface 25f Lip root portion 25g Lip tip portion 25h End portion X Rotational axis (central axis)

Claims (3)

the main body;
a water tank supported within the body;
a rotating drum rotatably provided in the water tank;
a main body opening provided in the main body for loading laundry into the rotating drum;
a lid that covers the opening of the main body in an openable and closable manner;
a water tank opening provided in the water tank and facing the main body opening;
a packing member provided between the body opening and the water tank opening;
with
The lid body has an inner lid that bulges inward of the main body,
The packing member
an annular seal portion having a seal inner peripheral surface and sealing a gap between the main body opening and the water tank opening;
It has a lip front surface that contacts the inner lid when the lid body is closed, and is formed to extend from the main body opening side of the inner peripheral surface of the seal toward the central axis of the rotating drum. an annular lip;
including
In a cross section of the packing member that includes the central axis, the annular lip portion gradually increases in thickness from the inner peripheral surface of the seal toward the central axis.
Drum type washing machine. The annular lip portion has a lip inner peripheral surface,
In the cross section, the annular lip portion gradually increases in thickness from the seal inner peripheral surface toward the lip inner peripheral surface,
When the lid body is closed, the end of the front surface of the lip abuts the inner lid.
The drum-type washing machine according to claim 1. In a cross section including the packing member and the inner lid in a state where the lid body is closed, an angle formed by the inner peripheral surface of the lip and the inner lid is an obtuse angle on the central axis side,
The drum-type washing machine according to claim 2.

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