Washing machine

Abstract

Provided is a washing machine that can be cleaned without damaging clothes to be washed. A washing machine is provided with: a bottomed cylinder-shaped water tank (4) having an opening on one side; a bottomed cylindrical rotating tank (5) which is rotatably provided in the water tank (4), and which has an opening on one side; a water tank front cover that constitutes the opening of the water tank (4); and a circulation flow path (70) for guiding the washing water discharged from the water tank (4) to the water tank (4) again. The downstream end of the circulation flow path (70) is provided with a nozzle for supplying washing water into the water tank (4). The nozzle is arranged in an annular cover (6) which forms the front cover of the water tank, and a supply port (72) arranged at the front end part of the nozzle does not protrude towards the surface side of the annular cover (6).

Description

Technical Field

[0001] The present disclosure relates to a washing machine having a water tank and a spin tank. Background Art

[0002] As a washing machine, a drum-type washing machine is widely known, which washes laundry such as clothes stored in a rotating tank by rotating a rotating tank in a water tank. In such a washing machine, a drainage path is provided to discharge washing water to the outside of the water tank. During washing, there is also a structure in which the discharged washing water is circulated so as to return to the water tank again through a circulation flow path.

[0003] For example, Japanese Patent Publication No. 2004-57821 discloses a washing machine having the following structure: a pump box, a circulation hose and a circulation pump are provided, and the circulation pump is operated during a washing process or a rinsing process to send washing water flowing into the pump box to a drum through the circulation hose. Summary of the invention

[0004] The rotary drum rotates at high speed during a dehydration operation, etc., so that centrifugal force acts on the clothes inside. In the above-mentioned conventional washing machine, a nozzle for releasing washing water from a circulation hose is provided to protrude toward the inner peripheral side of the gasket.

[0005] Therefore, when the rotating tank rotates, clothes are easily caught or stuck by the nozzle, which may damage the clothes. In addition, there is also a problem that lint such as thread scraps produced during the cleaning process is easily accumulated around the nozzle protruding to the inner peripheral side.

[0006] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide a washing machine that can wash laundry such as clothing without damaging the laundry.

[0007] In order to solve the above-mentioned problems, in the washing machine involved in the present disclosure, the washing machine includes: a water tank in the shape of a bottomed drum with an opening on one side; a rotating tank in the shape of a bottomed drum with an opening on one side, which is rotatably arranged in the water tank; a water tank front cover, which is arranged on one side of the water tank and constitutes the opening of the water tank; a circulation flow path, which guides the washing water discharged from the water tank to the water tank again; a nozzle, which is connected to the downstream end of the circulation flow path and supplies washing water to the water tank, the nozzle is arranged in the water tank front cover, and the supply port provided in the front end portion of the nozzle includes a portion surrounded by the water tank front cover, and is arranged not to protrude to the surface side of the water tank front cover. Effects of the Invention

[0008] According to the washing machine of the present disclosure, laundry can be washed without damaging the laundry. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a perspective view showing a washing machine according to an embodiment of the present disclosure. Figure 2 It is a perspective view showing the washing machine with its door opened. Figure 3 It is a front view which shows the water tank provided inside the washing machine. Figure 4 This is a perspective view showing the water tank as viewed diagonally from below. Figure 5 This is an exploded perspective view showing the front surface side of the water tank and the annular cover as viewed from below. Figure 6 yes Figure 5 An enlarged view of part B in FIG. Figure 7 yes Figure 3 AA section view in. Figure 8 It is a perspective view showing a supply port of a nozzle provided on the annular cover. Fig. 9 This is a perspective view showing the nozzle as viewed from the back side of the annular cover. Fig.10 It is a perspective view showing another example of the cutout portion provided in the annular cover. Fig.11 This is a perspective view showing another example of the nozzle as viewed from the back side of the sink front cover. DETAILED DESCRIPTION

[0010] A washing machine 1 according to an embodiment of the present disclosure will be described with reference to the drawings. Figure 1 and Figure 2 1 is a perspective view showing the appearance of a washing machine 1 according to an embodiment of the present disclosure. Figure 1 The state in which the door 3 is closed is shown. Figure 2 The state in which the door 3 is opened is shown.

[0011] In addition, for the sake of convenience of explanation, the following description will be given on the side of the washing machine 1 where the door 3 is provided as the front surface side F, and on the opposite side as the back surface side R, but this does not limit the installation method and the use method of the washing machine 1. In addition, in the present disclosure, "washing machine" refers to all equipment that performs various treatments such as washing laundry. Treatments of laundry in a washing machine include, for example, washing, drying, deodorizing, and sterilizing. The laundry is not particularly limited. Examples of laundry include cloth products. Specific examples of laundry include, for example, clothing such as clothes, hats, and gloves, shoes, bags, handkerchiefs, towels, and other portable items, curtains, blankets, towel blankets, bedding such as quilt covers, carpets, dolls, and the like.

[0012] The washing machine 1 has a door 3 on the front surface side F of the housing 10. An internal space for accommodating a water tank 4 and a rotary tank 5 described later is provided inside the housing 10. Two covers 21 and 22 are arranged on the upper surface of the housing 10, and a detergent injection unit (not shown) is provided below these covers 21 and 22, which can manually and automatically inject detergents, etc. A water supply port 23 for allowing tap water to flow in is provided near the cover 22. By appropriately controlling the opening and closing of a plurality of electromagnetic valves (not shown) provided inside the water supply port 23, tap water can be supplied to the detergent injection unit.

[0013] like Figure 1 As shown, the door 3 is formed into a substantially rectangular shape when viewed from the front. The door 3 integrally includes a door body 31 and an inclined upper portion 32 arranged in a manner inclined backward from the upper portion of the door body 31. The inclined upper portion 32 is provided with a display operation portion for selecting an operation action to indicate input and displaying an operation status.

[0014] like Figure 2 As shown, when the door 3 is opened, the opening 111 of the housing 10 is exposed. The front surface 101 of the housing 10 is provided with an opening 111 for the entry and exit of laundry. The door 3 is configured to be rotatable relative to the housing 10 by hinge connection, and the opening 111 can be opened and closed. A gasket 112 made of an elastic body such as rubber or soft resin is provided on the periphery of the opening 111. When the door 3 is closed, the window member 33 having a substantially truncated cone shape provided on the door 3 is in close contact with the seal 112, and the opening 111 is kept liquid-tight and airtight.

[0015] Figure 3 The housing 10 and its peripheral components are omitted and a front view of the water tank 4 provided inside the housing 10 is shown. Figure 4 This is a perspective view showing the water tank 4 as viewed from below. Figure 5 This is an exploded perspective view showing the front surface side of the water tank 4 and the annular cover 6 as viewed from below. Figure 6 yes Figure 5 An enlarged view of part B in FIG.

[0016] The housing 10 includes a water tank 4 and a rotating tank 5 as a rotating cylinder. The water tank 4 is formed in a bottomed cylinder shape with an opening (not shown) formed on one side. In the illustrated embodiment, the water tank 4 is arranged so as to open toward the opening 111 of the front surface 101 of the housing 10. The water tank 4 is elastically supported in the housing 10 by a plurality of dampers (not shown) and the like.

[0017] The rotating tank 5 in the water tank 4 also has a bottomed cylindrical shape similar to the water tank 4. The rotating tank 5 is provided with a rotating tank opening 51 on the front surface side F, which is open for taking out and putting in laundry such as clothes. In the washing machine 1, the rotating axis O of the rotating tank 5 is arranged at a predetermined inclination angle relative to the horizontal direction in a manner that the front surface side F is higher than the back side R (in a manner that it faces diagonally upward to the front). The rotating tank 5 is configured to be slightly smaller in diameter than the water tank 4, and is driven to rotate in the water tank 4 by a drum motor (not shown) provided on the back side R of the water tank 4. In addition, the rotating tank 5 can also be arranged in a manner that the rotating axis O is approximately parallel to the horizontal direction.

[0018] On the front surface side F of the water tank 4, an annular cover 6 is mounted on the water tank front cover frame 41, forming a water tank front cover having an opening toward the opening portion 111 (see Figure 7 ). In addition, the water tank front cover is not limited to the above-mentioned structure. For example, the water tank front cover frame 41 and the annular cover 6 may be formed as one body. In the following description, when there is no description of distinguishing the annular cover 6 from the water tank front cover frame 41, the annular cover 6 can be replaced with a part or all of the water tank front cover.

[0019] Annular cover 6 has a substantially annular shape and is provided on front surface side F of water tank 4 to form an opening of water tank 4. Annular cover 6 is arranged to cover rotating tank opening 51 and has a function of preventing laundry from contacting pad 112 when rotating tank 5 rotates.

[0020] like Figure 4 As shown, the annular cover 6 has a substantially funnel-shaped inclined surface 61 whose inner diameter gradually decreases from the front surface side F toward the back surface side R. Figure 5 As shown, the slope portion 61 is provided on the inner peripheral side of the annular cover 6. The inner peripheral end of the slope portion 61 is provided as the inner peripheral edge 62 of the annular cover 6, and the inner peripheral edge 62 is configured to have a smaller diameter than the outer peripheral edge 63 of the annular cover 6.

[0021] In addition, the annular cover 6 has a curved surface portion 65 arranged in a curved shape along a portion of the inner peripheral edge 62. The curved surface portion 65 is provided continuously with the inclined surface portion 61, and is a curved surface extending along the direction of the inner peripheral surface of the rotating tank 5, that is, from the front surface side F toward the back surface side R. In the illustrated embodiment, the curved surface portion 65 of the annular cover 6 is provided in a region corresponding to the upper half of the water tank 4, and is provided in a region above the horizontal line L1 passing through the rotating shaft core O.

[0022] An annular fluid balancer 52 is provided on the front surface side F of the rotating tank 5. The fluid balancer 52 includes an annular hollow shell and a liquid such as saline sealed therein, and the movement of the internal liquid suppresses the rotating tank 5 from swinging greatly when the rotating tank 5 is driven to rotate. The fluid balancer 52 itself also has weight, so the rotation balance of the rotating tank 5 can be improved.

[0023] In the washing machine 1, a Figure 3 The washing water indicated by the reference numeral W is discharged from the water tank 4 and then guided back to the water tank 4 through the circulation flow path 70. Figures 3 to 5 As shown, the circulation flow path 70 is arranged along the outer peripheral surface of the water tank 4 in the front surface side F of the water tank 4. The circulation flow path 70 is connected to a circulation pump (not shown) provided at the lower part of the water tank 4, and the discharge side is communicated with the upper part of the front surface side F of the water tank 4. The washing water inside the water tank 4 is accumulated in the drain pipe and the water tank 4 in a state where the drain valve is closed. By driving the circulation pump, the washing water is sent from the lower part of the water tank 4 to the upper part of the water tank 4 through the circulation flow path 70, and is supplied to the water tank 4.

[0024] like Figure 5 As shown, a nozzle 7 for supplying washing water into the water tank 4 is provided at the downstream end of the circulation flow path 70. The nozzle 7 is arranged on the back side of the annular cover 6 and is covered by the annular cover 6.

[0025] like Figure 6 As shown in an enlarged manner, the nozzle 7 includes a nozzle body 71 connected to the downstream end of the circulation flow path 70 and a supply port 72 provided at the front end (downstream end) of the nozzle body 71 and spraying washing water. The nozzle body 71 extends from the radially outer side X1 to the inner side X2 on the back side of the annular cover 6. The supply port 72 is arranged so as to face the inner side of the rotating tank 5.

[0026] Figure 7 yes Figure 3 AA section view in the figure, Figure 8 It is a perspective view showing the supply port 72 of the nozzle provided in the annular cover 6 . Fig. 9 This is a perspective view showing the nozzle 7 as viewed from the back side of the annular cover 6 .

[0027] like Figure 7 As shown, nozzle 7 is configured such that the downstream end of circulation flow path 70 is connected to base 711 of nozzle body 71, and washing water is supplied from supply port 72. Nozzle body 71 is formed in an integral cylindrical shape (tube shape) from base 711 to supply port 72.

[0028] The nozzle body 71 is provided with an inclined flow path 73 inclined toward the bottom direction of the water tank 4 and the rotating tank 5. The nozzle body 71 is provided with an inclined surface 731 on the front surface side F of the inclined flow path 73. The supply port 72 is provided at the downstream end of the inclined flow path 73. In the illustrated embodiment, the inclined flow path 73 is provided to be inclined from the front surface side F toward the back surface side R along the flow direction of the supplied washing water at a downward slope.

[0029] like Figure 5 As shown, a cutout portion 64 is provided in the annular cover 6. The cutout portion 64 penetrates the front surface (X2 side) and the back surface (X1 side) of the annular cover 6. The cutout portion 64 is formed in the curved surface portion 65 of the annular cover 6 and is formed by opening at the edge portion of the radial inner side (X2) of the annular cover 6.

[0030] like Figure 8 As shown, the supply port 72 at the front end of the nozzle 7 is arranged in the cutout portion 64 provided in the annular cover 6. The supply port 72 is embedded in the cutout portion 64 of the annular cover 6 and is covered by the annular cover 6. When viewed from the inner peripheral side of the annular cover 6, the supply port 72 is formed in a substantially rectangular shape that is long in the circumferential direction. In contrast, the cutout portion 64 is also formed in a substantially rectangular shape corresponding to the shape of the supply port 72.

[0031] The supply port 72 has a portion surrounded by the annular cover 6. The supply port 72 is arranged so that one long side arranged on the front surface side F and short sides at both ends in the circumferential direction are close to the cutout portion 64. The other long side of the supply port 72 is arranged on the opening side of the cutout portion 64, is not surrounded by the annular cover 6, but is arranged so as not to protrude toward the surface side of the annular cover 6.

[0032] The end surface of the supply port 72 exposed in the cutout portion 64 is formed in a shape that follows the curved surface shape of the curved surface portion 65 of the annular cover 6. Figure 6 As shown, the nozzle body 71 has a rib 74 between the supply port 72 and the notch portion 64 , and the rib 74 is formed thickly so as to bulge toward the outer peripheral portion of the supply port 72 .

[0033] like Figure 7 As shown, the peripheral wall constituting the supply port 72 is formed so that the end portion on the front surface side F which is continuous with the inclined surface 731 is thicker than the end portion located on the bottom side of the water tank 4. Figure 8 As shown, when viewed from the inner peripheral side of the annular cover 6, the peripheral wall of the supply port 72 exposed in the cutout portion 64 of the curved surface portion 65 is set so that the thickness D1 on the front surface side F is thicker than the thickness D2 on the back surface side R. The rib 74 is provided on the outer peripheral portion of one long side arranged on the front surface side F of the supply port 72 and the short sides at both ends in the circumferential direction of the supply port 72. The rib 74 is also arranged so as not to protrude from the surface of the annular cover 6 to the inner side X2.

[0034] like Figure 7As shown, the peripheral wall of the front surface side F of the rib 74 deviates from the thickness D1 in the direction of the front surface side F, and the outer wall of the inclined surface 731 is bent in the radially inner direction (X2) at the end of the front surface side F. By the bent portion abutting against the inner side (X1 side) of the cutout portion 64, the supply port 72 and the cutout portion 64 can be accurately aligned.

[0035] Therefore, if Figure 7 As shown, the nozzle 7 as a whole is not arranged to protrude toward the surface side of the annular cover 6, but is arranged inside the annular cover 6, and the supply port 72 is arranged to be set back from the surface of the annular cover 6 toward the radially outer side X1. As a result, it is possible to prevent the laundry from being hooked by the nozzle 7 (supply port 72), thereby suppressing damage caused by contact with the nozzle 7. Since the rib 74 is extended from the outer periphery of the supply port 72, it is difficult for the laundry to enter between the cutout portion 64 and the supply port 72, and it is also possible to prevent lint such as silk scraps from accumulating in the gap.

[0036] Fig. 9 This is a perspective view showing the nozzle 7 as viewed from the back side of the annular cover 6. Fig.10 It is a perspective view showing another example of the cutout portion 64 provided in the annular cover 6 .

[0037] The nozzle 7 constructed as described above is preferably screwed to the back side of the annular cover 6. Fig. 9 As shown, a fixing portion 75 is provided on the nozzle body 71. The fixing portion 75 is provided to protrude outward from the nozzle body 71. In the illustrated embodiment, the fixing portion 75 is extended in a direction intersecting the longitudinal direction of the nozzle body 71. A threaded hole not shown is opened in the fixing portion 75. A boss portion not shown is provided on the back side of the annular cover 6, and the fixing portion 75 is fastened to the annular cover 6 using a fastener 77 such as a screw. The nozzle 7 is fixed to the back side of the annular cover 6 in a state where the supply port 72 is arranged at the cutout portion 64.

[0038] like Fig.10 As shown, it is preferred that a protrusion 641 that is engaged with the front end of the nozzle 7 is provided in the cutout portion 64 of the annular cover 6. For example, the protrusion 641 is provided on the inner side of the cutout portion 64 protruding from the inner peripheral edge 62 of the annular cover 6 toward the supply port 72. In this case, the protrusion 641 can be engaged with the supply port 72 relative to the edge portion arranged on the opening side of the cutout portion 64. The supply port 72 arranged in the cutout portion 64 is fixed to the annular cover 6 without positional displacement.

[0039] By fixing the nozzle 7 to the annular cover 6 in this way, the nozzle 7 can be stably fixed to the annular cover 6 with a simple operation and a small number of parts, and can prevent floating, etc. The nozzle body 71 is not limited to having one fixing portion 75, and the same fixing portions may be provided at multiple locations.

[0040] For example, Fig.11 As shown, on the nozzle body 71, in addition to the fixing portion 75, a fixing portion 76 may be provided at a position close to the supply port 72. In addition, the water tank front cover 8 may be configured to include a separate water tank front cover frame 41 and an annular cover 6, and the annular cover 6 may be mounted on the radial inner side X2 of the water tank front cover frame 41.

[0041] The fixing portion 75 and the fixing portion 76 are extended in a direction intersecting the longitudinal direction of the nozzle body 71, that is, in directions opposite to each other. In addition, with respect to the longitudinal direction of the nozzle body 71, the fixing portion 75 is provided close to the base portion 711, and the fixing portion 76 is provided close to the front end portion (supply port 72). In the fixing portion 76, a threaded hole (not shown) is opened in the same manner as the fixing portion 75.

[0042] A boss portion (not shown) is provided on the water tank front cover frame 41 disposed on the radially outer side X1, and the nozzle body 71 is arranged on the water tank front cover frame 41, and the fixing member 77 is fastened to the fixing portion 75 using screws or the like. In this state, the base 711 of the nozzle body 71 can be connected to the downstream end of the circulation flow path 70 (see Figure 7 ). After that, the annular cover 6 is assembled to the water tank front cover frame 41, and the fixing portion 76 is fastened to the annular cover 6. The fixing portion 76 is screwed to the boss portion provided on the back side of the annular cover 6.

[0043] The nozzle 7 can be stably fixed to the water tank front cover 8 (water tank front cover frame 41 and annular cover 6) via two fixing parts 75 and 76. The nozzle 7 is arranged in the water tank front cover 8, and the supply port 72 at the front end of the nozzle 7 is surrounded by the water tank front cover 8 (annular cover 6) and is arranged so as not to protrude to the surface side of the water tank front cover 8. When the fixing part 76 is fastened, the nozzle body 71 can be accurately aligned with respect to the annular cover 6. In addition, the nozzle body 71 mounted on the water tank front cover frame 41 is located at a position closer to the back side R than the mounting position of the annular cover 6, so it does not hinder the mounting operation of the annular cover 6, and can be mounted with good operability.

[0044] As described above, in the washing machine 1, the nozzle 7 for supplying washing water from the circulation flow path 70 is arranged in the water tank front cover without protruding toward the rotating tank 5 side, so that the laundry such as clothes is not easily caught, and the occurrence of damage can be suppressed. In addition, the nozzle body 71 of the nozzle 7 is integrally formed from the base 711 to the supply port 72, and a rib 74 is provided between the supply port 72 and the cutout portion 64 of the annular cover 6, so that the gap can be reduced, the occurrence of the laundry being caught can be suppressed, and the accumulation of lint can also be prevented. As a result, the laundry can be effectively washed without damaging it.

[0045] In washing machine 1, nozzle 7 may be configured not to protrude inwardly from the surface of the water tank front cover, including a portion where supply port 72 provided at the front end is surrounded by the water tank front cover, and is not limited to the configuration shown in the above embodiment.

[0046] The embodiments disclosed herein are examples in all aspects and are not the basis for restrictive interpretation. Therefore, the technical scope of the present disclosure is not only interpreted by the above-mentioned embodiments, but is limited based on the records of the claims. In addition, all changes within the meaning and scope equivalent to the scope of the claims are included.

Claims

1. A washing machine, characterized in that: include: A water tank in the shape of a bottom cylinder with one side open; A rotating tank in the shape of a bottom cylinder with an opening on one side, which is rotatably arranged in the water tank; A water tank front cover, which is arranged on one side of the water tank and constitutes an opening of the water tank; a circulation flow path for guiding the washing water discharged from the water tank to the water tank again; a nozzle connected to the downstream end of the circulation flow path and supplying washing water into the water tank, The nozzle is arranged in the front cover of the water tank. The supply port provided in the front end portion of the nozzle includes a portion surrounded by the water tank front cover, and is arranged so as not to protrude toward the surface side of the water tank front cover.

2. The washing machine according to claim 1, characterized in that: The water tank front cover has a curved surface portion, and the curved surface portion extends in a direction along the inner peripheral surface of the rotating tank. The supply port is arranged to be set back radially outward from the surface of the curved surface portion.

3. The washing machine according to claim 1, characterized in that: The water tank front cover is provided with a cutout portion, and the cutout portion penetrates the front surface and the back surface of the water tank front cover. The supply port is arranged in the cutout portion.

4. The washing machine according to claim 3, characterized in that: The water tank front cover has a curved surface portion, and the curved surface portion extends in a direction along the inner peripheral surface of the rotating tank. The cutout portion is provided on the curved surface portion.

5. The washing machine according to claim 3, characterized in that: The cutout portion is formed to open at a radially inner edge portion of the water tank front cover.

6. The washing machine according to claim 5, characterized in that: The nozzle includes a rib between the supply port and the cutout portion, and the rib is formed thickly so as to bulge toward an outer periphery of the supply port.

7. The washing machine according to claim 5, characterized in that: The cutout portion is provided with a protrusion, and the protrusion is locked to the front end portion of the nozzle.

8. The washing machine according to claim 7, characterized in that: The protrusion is provided to protrude from an edge portion of the opening side of the cutout portion.

9. The washing machine according to claim 1, characterized in that: The nozzle has an inclined flow path, and the inclined flow path is inclined toward the bottom direction of the water tank.

10. The washing machine according to claim 9, characterized in that: The supply port is provided at a downstream end of the inclined flow path, and a peripheral wall of the supply port is formed thicker on one side of the water tank than on a bottom side of the water tank.

11. The washing machine according to any one of claims 1 to 10, characterized in that The nozzle is screwed to the back side of the water tank front cover.

12. The washing machine according to any one of claims 1 to 10, characterized in that The circulation flow path is arranged on one side of the water tank along the outer peripheral surface of the water tank.

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