JP6515005B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine.

  Conventionally, there has been provided a washing machine in which the water sprayed from the water supply nozzle is intended to enhance the cleaning effect and the rinsing effect.

  For example, in the washing machine of Patent Document 1, water is supplied to the lower side of the rotary tank from the bellows-like first water channel pipe, and water is supplied to the side surface of the rotary tank from the second water supply pipe composed of a hose. There is. A hole is formed in the water tank cover provided above the rotary tank, and the nozzle is connected to the tip of the second water supply pipe through the hole of the water tank cover.

JP, 2010-268842, A

  In the washing machine of patent document 1, the nozzle is comprised by one component. In order to change the water supply state from the nozzle injection port, it is necessary to replace the entire nozzle, and it takes time to replace the nozzle.

  By the way, in order to facilitate replacement of the nozzle, for example, the nozzle may be configured by two parts of a first upstream member connected to a hose and a second downstream member having an injection port. Conceivable. At this time, the first member and the second member are attached to the attachment member so as to sandwich the attachment member.

  When the first member and the second member are attached by sandwiching the attachment member, a narrow upper gap is usually formed between the upstream first member and the attachment member. The narrow upper clearance causes capillary action to suck up the water remaining around the mounting portion of the nozzle to the mounting member. The water sucked into the upper gap may flow along the upper surface of the mounting member attached to the water tank and eventually leak out of the water tank to wet the floor surface.

  Therefore, in the technical problem to be solved by the present invention, in the case where the water supply nozzle is constituted by two members of the first member and the second member, the upper surface formed between the upstream first member and the mounting member An object of the present invention is to provide a washing machine for preventing water leakage out of a water tank due to capillary action in a gap.

  In order to solve the said technical subject, according to this invention, the following washing machines are provided.

That is, the washing machine according to the present invention is
A storage tank for storing laundry,
A water supply nozzle for supplying water to the laundry stored in the storage tank;
And a mounting member having a nozzle mounting hole for mounting the water supply nozzle.
The water supply nozzle includes a first member provided on the upstream side, and a second member provided on the downstream side,
The first member has an insertion cylindrical portion provided at the downstream end and inserted into the nozzle mounting hole,
The second member has a connection tube portion inserted into the insertion tube portion, and a lower tube portion formed continuously with the lower end portion of the connection tube portion .
The connection cylindrical portion is inserted into the insertion cylindrical portion via a sealing member that seals a connection gap formed between the insertion cylindrical portion and the connection cylindrical portion.
A lower open space formed by the lower end portion of the insertion cylindrical portion and the lower pipe portion of the second member is disposed below the insertion cylindrical portion.

The lower flange portion which is a part of the second member is placed on the outside of the connecting tube portion to have a circular cutout, and, attached to said mounting member,
Wherein the insertion tube as the lower open space below the mounting member is located, is Rukoto is inserted into the annular notch preferred.

  It is preferable that the said insertion cylinder part has an extending part extended below rather than the lower surface of the said attachment member.

  Preferably, a radial gap of at least 1 mm is disposed between the outer peripheral surface of the insertion tube and the nozzle mounting hole.

  It is preferable that the claw part provided in the outer peripheral surface of the downstream end of the said connection cylinder part is engaged with the recessed part provided in the inner peripheral surface of the said insertion cylinder part.

  In the washing machine according to the present invention, the lower open space provided below the insertion tube portion of the first member guides the water leaked from the connection gap downward, and between the upstream first member and the mounting member Prevents suction due to capillary action in the upper gap formed in the. Therefore, when the water supply nozzle is formed of two members, the first member and the second member, even if water leaks from the connection gap, it is possible to prevent water leak out of the water tank due to the capillary phenomenon in the upper gap.

BRIEF DESCRIPTION OF THE DRAWINGS The external appearance perspective view of the washing machine which concerns on this invention. Principal part sectional drawing which demonstrates the structure of the washing machine shown in FIG. 1 typically. The external appearance perspective view of a mounting member. The top view of the 1st member of the water supply nozzle which concerns on 1st Embodiment. The bottom view of the 1st member of the water supply nozzle concerning a 1st embodiment. The side view of the 1st member of the water supply nozzle which concerns on 1st Embodiment. The end elevation of the 1st member of the water supply nozzle concerning a 1st embodiment. The top view of the 2nd member of the water supply nozzle which concerns on 1st Embodiment. The bottom view of the 2nd member of the water supply nozzle concerning a 1st embodiment. The side view of the 2nd member of the water supply nozzle which concerns on 1st Embodiment. The end elevation of the 2nd member of the water supply nozzle concerning a 1st embodiment. The end view which shows the state which attached the water supply nozzle which concerns on 1st Embodiment to the attachment member. The end view in the position different from the end view of FIG. The top view of the 1st member of the water supply nozzle which concerns on 2nd Embodiment. The bottom view of the 1st member of the water supply nozzle concerning a 2nd embodiment. The side view of the 1st member of the water supply nozzle which concerns on 2nd Embodiment. The end elevation of the 1st member of the water supply nozzle concerning a 2nd embodiment. The top view of the 2nd member of the water supply nozzle which concerns on 2nd Embodiment. The bottom view of the 2nd member of the water supply nozzle concerning a 2nd embodiment. The side view of the 2nd member of the water supply nozzle which concerns on 2nd Embodiment. The end elevation of the 2nd member of the water supply nozzle concerning a 2nd embodiment. The end view which shows the state which attached the water supply nozzle which concerns on 2nd Embodiment to the attachment member. The top view of the 1st member of the water supply nozzle which concerns on 3rd Embodiment. The bottom view of the 1st member of the water supply nozzle concerning a 3rd embodiment. The side view of the 1st member of the water supply nozzle which concerns on 3rd Embodiment. The end elevation of the 1st member of the water supply nozzle concerning a 3rd embodiment. The top view of the 2nd member of the water supply nozzle which concerns on 3rd Embodiment. The bottom view of the 2nd member of the water supply nozzle concerning a 3rd embodiment. The side view of the 2nd member of the water supply nozzle which concerns on 3rd Embodiment. The end elevation of the 2nd member of the water supply nozzle concerning a 3rd embodiment. The end view which shows the state which attached the water supply nozzle which concerns on 3rd Embodiment to the attachment member. The top view of the 2nd member of the water supply nozzle which concerns on 4th Embodiment. The bottom view of the 2nd member of the water supply nozzle concerning a 4th embodiment. The side view of the 2nd member of the water supply nozzle which concerns on 4th Embodiment. The end elevation of the 2nd member of the water supply nozzle concerning a 4th embodiment. The end view which shows the state which attached the water supply nozzle which concerns on 4th Embodiment to the attachment member. The top view of the 1st member of the water supply nozzle which concerns on a comparative example. The bottom view of the 1st member of the water supply nozzle concerning a comparative example. The side view of the 1st member of the water supply nozzle which concerns on a comparative example. The end elevation of the 1st member of the water supply nozzle concerning a comparative example. The top view of the 2nd member of the water supply nozzle concerning a comparative example. The bottom view of the 2nd member of the water supply nozzle concerning a comparative example. The side view of the 2nd member of the water supply nozzle which concerns on a comparative example. The end elevation of the 2nd member of the water supply nozzle concerning a comparative example. The end view which shows the state which attached the water supply nozzle which concerns on a comparative example to the attachment member.

  Hereinafter, the configuration of the vertical washing machine 1 (hereinafter, simply referred to as the washing machine 1) according to the first embodiment will be described with reference to FIGS. 1 to 3. In addition, this embodiment is an example to the last, and is not limited to the said embodiment.

  1 is an external perspective view of the washing machine 1 as viewed obliquely from above, FIG. 2 is a cross-sectional view of the main part of the rear upper portion of the washing machine 1 shown in FIG. It is an external appearance perspective view. Hereinafter, for convenience of description, in FIG. 1 and the like, the side on which the setting display unit 6 is disposed is referred to as the front side (front), and the direction of the washing machine 1 is specified based on FIG. 1 when the washing machine 1 is viewed from the front side. .

  As shown in FIG. 1, the washing machine 1 includes an outer case 1 a having an outer case opening 2 a at the center of the upper surface plate 5.

  The upper lid 2 is rotatably attached to the upper surface plate 5 of the outer case 1 a by a hinge portion 9, and the outer case opening 2 a is opened and closed by the upper lid 2.

  The setting display unit 6 is provided on the front surface of the upper surface plate 5. The setting display unit 6 is selected and determined by a power on / off key, a plurality of selection keys (for example, a washing course selection key, a start key, etc.) for selecting and determining operation content, and the selection key. It has a display part etc. which display the driving | operation content.

  The washing tub 3 and the water tub 4 are accommodated in the outer case 1a. The washing tub 3 works as a storage tub for storing the laundry. The washing tub 3 stores water in which detergent is dissolved or water for rinsing. The water tank 4 accommodates the washing tub 3. The washing tank 3 and the water tank 4 have a bottomed cylindrical shape with the upper side opened. The central axes of the washing tub 3 and the water tub 4 extend vertically and coaxially.

  An annular balancer (not shown) is attached to the edge of the upper opening of the washing tub 3. The balancer is provided to suppress the vibration generated when the washing tub 3 is rotated at high speed in order to dewater the laundry. A stirring blade (not shown) is disposed on the bottom of the washing tub 3.

  A drive unit (not shown) having a clutch / brake mechanism and a drive motor is attached to the lower side of the water tank 4 in the outer case 1a. A stirring blade is attached to the tip of the rotary shaft of the clutch and brake mechanism.

  The washing machine 1 includes a drying unit having a heater, a blower fan, and a fan drive motor.

  As shown in FIG. 2, a water supply unit having a main water supply valve 22 and a nozzle water supply valve 23 is provided on the rear side of the top plate 5. A main water supply pipe (not shown) is connected to the main water supply valve 22. And the downstream side of the main water supply piping is connected to the detergent case which is not shown in figure. The detergent case contains a detergent and the like. The detergent case is configured such that when the main water supply valve 22 is opened to supply water into the detergent case, water in which the detergent is dissolved flows out from the water injection port.

  For example, a nozzle water supply pipe 24 composed of a hose is connected to the nozzle water supply valve 23. The downstream side of the nozzle water supply pipe 24 is connected to the pipe connection portion 38 of the shower nozzle 20. The shower nozzle 20 is attached to the mounting plate portion 11 of the mounting member 8. The shower nozzle 20 is located immediately above the water tank 4 and located inside the peripheral wall of the water tank 4. The mounting member 8 is fixed to the top plate 5 with a screw.

  As shown in FIG. 3, the mounting member 8 is substantially L-shaped, and has a mounting plate portion 11 extending rearward in a substantially horizontal direction and a vertical plate portion 12 extending substantially vertically upward.

  A window portion for accommodating the detergent case and a window portion for filter used when sucking and discharging the drying air are formed in the vertical plate portion 12.

  Each of the through holes such as the nozzle mounting hole 25, the screw insertion holes 23 a and 24 a, the positioning hole 26, the drying air outlet and the detergent water outlet is formed in the mounting plate portion 11. The nozzle mounting hole 25 is a hole for mounting and attaching the shower nozzle 20. The shower nozzle 20 is fixed to the mounting member 8 using the screw 27 inserted into the screw insertion holes 23a and 24a.

First Embodiment
Next, the shower nozzle 20 according to the first embodiment will be described with reference to FIGS. 4A to 7. 4A to 4D show the upper member (first member) 30 of the shower nozzle 20, and FIGS. 5A to 5D show the lower member (second member) 40 of the shower nozzle 20. FIG. 6 is an end view showing the shower nozzle 20 attached to the mounting plate portion 11 of the mounting member 8, and FIG. 7 is an end view at a position different from the end view of FIG. The shower nozzle 20 is composed of two members, an upper member 30 as a first member and a lower member 40 as a second member.

  As shown in FIGS. 4A to 4D, the upper member 30 of the shower nozzle 20 includes the upper flange 31, the upper pipe portion 32, the screw mounting portions 33 and 34, the insertion cylindrical portion 35, the positioning boss 36 and the piping connection portion 38. Prepare. A substantially L-shaped upper pipe portion 32 is formed above the upper flange 31, a cylindrical insertion cylindrical portion 35 is formed below the upper flange 31, and the upper pipe portion 32 and the insertion cylindrical portion 35 are upper flanges. It is connected through 31. A substantially L-shaped upper flow passage 39 is formed in the upper pipe portion 32. The downstream side of the upper flow passage 39 communicates with a connection hole 35 a formed in the insertion cylinder 35.

  Female screw holes 33a and 34a are formed in the screw mounting portions 33 and 34 respectively. A pipe connection portion 38 for connecting the nozzle water supply pipe 24 is formed on the upstream side of the upper pipe portion 32. The positioning boss 36 extends vertically downward from the lower surface of the upper flange 31.

  As shown in FIGS. 5A to 5D, the lower member 40 of the shower nozzle 20 includes a lower flange 41, a lower pipe portion 42, a rib 43, and a connection cylindrical portion 45. A cylindrical connecting cylinder 45 is formed on the upper end side of the lower member 40 and above the lower flange 41. The lower pipe portion 42 is formed below the lower flange 41. The connecting cylindrical portion 45 is connected to the lower pipe portion 42, and is configured such that the outer diameter and the inner diameter of the both are equal. A lower flow passage 49 is formed in the lower pipe portion 42. The communication hole 45 a formed inside the connection cylindrical portion 45 communicates with the lower flow passage 49. A jet port 48 for supplying water to the laundry stored in the washing tub 3 is formed at the lower end side of the lower member 40 and at the downstream end of the lower pipe portion 42. The injection port 48 is configured to inject water that has passed through the lower flow path 49 obliquely downward as a conical or fan-like diverging shower. By replacing the lower member 40 with a different one, the injection state from the injection port 48 can be changed.

  A lower open space 51 is formed under the lower flange 41 by the lower member 40. The lower open space 51 is formed by the lower end portion of the insertion cylindrical portion 35 and the lower pipe portion 42 of the lower member 40, and is an open space directed downward.

  The insertion tube portion 35 is configured to be insertable into the nozzle mounting hole 25 of the mounting plate portion 11 and the annular notch 54 and the insertion groove 44 of the lower member 40. Since the rib 43 is a plate-like body, the lower open space 51 does not have any component except the rib 43. Therefore, the water led downward by the extending part 35 b described later can flow down by gravity through the lower open space 51. The water flowing down the lower open space 51 flows into the water tank 4 and therefore does not enter the gap between the outer case 1 a and the water tank 4. Therefore, the lower open space 51 formed under the lower flange 41 of the lower member 40 can allow leaked water from the connection gap 15 to flow down into the water tank 4.

  The positioning hole 46 and the screw insertion holes 43 a and 44 a which penetrate are formed in the lower flange 41. The lower flange 41 has an annular notch 54 concentric with the connection cylindrical portion 45, and is disposed outside the connection cylindrical portion 45. A plurality of plate-like ribs 43 are formed on the lower surface of the lower flange 41. A plurality of ribs 43, for example, four ribs 43, are evenly arranged at an angle of 90 degrees. The ribs 43 connect the lower surface of the lower flange 41 and the outer surface of the lower pipe portion 42 to secure the mechanical strength of the lower member 40. An insertion groove 44 is formed by cutting the inner peripheral upper portion of each rib 43 vertically downward. Each insertion groove 44 is concentric with the annular notch 54 and extends vertically downward from the lower end of the annular notch 54 to the middle of the rib 43.

  In a mode in which the insertion cylindrical portion 35 does not extend downward to the lower flange 41, a plurality of bar-shaped ribs 43 separated from each other connect the inner peripheral surface of the lower flange 41 and the outer surface of the lower pipe portion 42. You may configure it. A rib gap (not shown) formed between adjacent bar-shaped ribs 43 constitutes a part of the lower open space 51, and water leaks from the connection gap 15 can flow down into the water tank 4 through the rib gap.

  In the insertion groove 44, a portion other than the portion into which the insertion cylinder portion 35 is inserted constitutes a part of the lower open space 51. The lower open space 51 of the insertion groove 44 is located at the lower part of the insertion cylindrical portion 35, and guides the leaked water from the connection gap 15 downward. Thus, the leaked water from the connection gap 15 can be led downward and flow down into the water tank 4 through the lower open space 51.

  As shown in FIGS. 6 and 7, the shower nozzle 20 is attached to the attachment member 8 in a state where the attachment plate portion 11 is held between the upper flange 31 of the upper member 30 and the lower flange 41 of the lower member 40. ing. In the upper member 30, the upper flange 31 abuts on the upper surface of the mounting plate portion 11, and the insertion cylindrical portion 35 is inserted into the nozzle mounting hole 25. A narrow upper gap 17 is formed between the upper surface of the mounting plate portion 11 and the lower surface of the upper flange 31.

  The projecting length of the insertion tube 35 is larger than the thickness of the mounting plate 11. That is, as shown in FIGS. 6 and 7, an extending portion 35 b extending vertically downward from the lower surface of the mounting plate portion 11 of the mounting member 8 is formed in the lower portion of the insertion cylindrical portion 35. The extending portion 35 b functions as a wrap around preventing portion which prevents the water leaked from the connection gap 15 of the connection cylindrical portion 45 and the connection hole 35 a downward and prevents the water from coming around the upper gap 17. The lower open space 51 is disposed below the extension 35 b of the insertion cylinder 35, and is formed by the lower end of the extension 35 b of the insertion cylinder 35 and the lower pipe 42 of the lower member 40.

  In the lower member 40, the lower flange 41 abuts on the lower surface of the mounting plate portion 11, and the connection cylindrical portion 45 is inserted into the connection hole 35 a of the insertion cylindrical portion 35. An O-ring 28 as a sealing member is interposed between the downstream end surface of the upper pipe portion 32 and the upstream end surface of the connection cylindrical portion 45. In a state where the mounting plate portion 11 is held between the upper flange 31 of the upper member 30 and the lower flange 41 of the lower member 40, the female screw hole 33a, the screw insertion hole 23a and the screw insertion hole 43a extend in the vertical direction. They are arranged in a straight line. Similarly, the female screw holes 34a, the screw insertion holes 24a, and the screw insertion holes 44a are arranged linearly in the vertical direction. Screws 27 and 27 are screwed into the respective female screw holes 33 a and 34 a, and the upper member 30 and the lower member 40 are fixed to the mounting member 8. By removing the screws 27, the upper member 30 and the lower member 40 can be removed from the mounting member 8. That is, the shower nozzle 20 is configured to be removable.

  The configuration in which the O-ring 28 is interposed in the connection hole 35 a prevents water leakage from the connection gap 15. However, there is a possibility that the sealing performance at the connection gap 15 may be insufficient due to the mounting failure or the mounting failure of the O-ring 28 and water leakage to the outside of the water tank 4 may occur.

  In the first embodiment, the protruding length of the insertion tube 35 is larger than the thickness of the mounting plate 11 by the amount of the extending portion 35 b, and the extending portion 35 b is perpendicular to the lower surface of the mounting plate 11. It extends downward. That is, the extending length of the extending portion 35 b is dimensioned to be larger than the thickness of the mounting plate portion 11. The length by which the water flows downward is longer in the vertical direction by the extension length of the extension part 35b. By making the extension length of the extension part 35b larger than the thickness of the mounting plate part 11, the water leakage from the connection gap 15 is led to the lower end part of the extension part 35b located below the lower surface of the mounting plate part 11. . The leaked water led to the lower end portion of the extending portion 35b is less likely to be sucked up by the length of the extending portion 35b which is elongated downward. As described above, by providing the extending portion 35 b in the insertion cylindrical portion 35 of the upper member 30, the leaked water is guided below the lower surface of the mounting plate portion 11 and the wrap around the upper gap 17 is prevented. The leaked water led to the lower side of the lower surface of the mounting plate portion 11 can flow down into the water tank 4 through the lower open space 51. As described above, the leaked water from the connection gap 15 can flow down into the water tank 4 without being sucked up by the capillary phenomenon in the narrow upper gap 17. In the present embodiment, the extending portion 35 b protrudes further downward than the lower surface of the lower flange 41. Therefore, the leaked water led to the lower end portion of the extending portion 35 b is more difficult to be sucked up by the extending portion 35 b by an amount that is longer downward than the lower surface of the lower flange 41.

Second Embodiment
Next, a shower nozzle 20 according to a second embodiment will be described with reference to FIGS. 8A to 10. In the second embodiment, components having the same functions as the components in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted. 8A to 8D show the upper member 30 of the shower nozzle 20, and FIGS. 9A to 9D show the lower member 40 of the shower nozzle 20. FIG. 10 is an end view showing the shower nozzle 20 attached to the mounting plate portion 11 of the mounting member 8.

  If the radial gap 29 between the insertion tube 35 and the nozzle mounting hole 25 is narrow, capillary action may occur in the radial gap 29. Then, after the leaked water from the connection gap 15 is sucked up through the narrow radial gap 29 and the narrow upper gap 17, it may flow along the upper surface of the mounting plate portion 11.

  Therefore, in the shower nozzle 20 according to the second embodiment, as shown in FIG. 10, the radial gap 29 formed in a cylindrical shape between the insertion cylindrical portion 35 and the nozzle mounting hole 25 does not cause a capillary phenomenon. It is configured to be of radial width dimension, ie at least 1 mm. The radial gap 29 is provided on the outer peripheral portion of the insertion cylindrical portion 35. The other configuration of the lower member 40 is the same as that of the first embodiment described above.

  For example, even if the radial gap 29 is about 0.7 mm, the capillary phenomenon can be prevented in the radial gap 29. However, due to the positioning tolerance of the shower nozzle 20 with respect to the mounting member 8, the radial gap 29 may be large and small, and there may be a capillary phenomenon where the radial gap 29 is small. Therefore, in consideration of the positioning tolerance of the shower nozzle 20 with respect to the mounting member 8, the radial clearance 29 is configured to be at least 1 mm.

  The radial gap 29 works as a wrap around portion that prevents leakage of water from the connection gap 15 into the upper gap 17. A lower open space 51 is disposed below the radial gap 29 and the insertion cylinder 35, and is formed by the lower ends of the radial gap 29 and the insertion cylinder 35 and the lower pipe 42 of the lower member 40. ing. The circumferential surface of the nozzle mounting hole 25 is shifted outward so that the radial clearance 29 is at least 1 mm, and the opening diameter of the nozzle mounting hole 25 is increased. The outer diameter of the insertion cylinder 35 may be reduced by shifting the outer peripheral surface of the insertion cylinder 35 inward so that the radial gap 29 is at least 1 mm. Also, the radial clearance 29 can range from at least 1 mm to the outer end of the upper flange 31.

  The basic configuration of the upper member 30 is the same as that of the first embodiment described above, but the insertion cylindrical portion 35 of the second embodiment does not include the extending portion 35 b. The downward projecting length of the insertion cylinder 35 is shortened by the amount not provided with the extending portion 35 b. The projecting length of the insertion tube 35 is dimensioned to be substantially the same as the thickness of the mounting plate 11. That is, the lower surface of the mounting plate portion 11 and the upper end portion of the outer peripheral surface of the insertion groove 44 are substantially flush. In addition, if the radial gap 29 is at least 1 mm, the projection length of the insertion cylinder 35 may be shorter or longer than the thickness of the mounting plate 11.

  According to the configuration of the second embodiment, when the radial gap 29 is at least 1 mm, the leaked water from the connection gap 15 is guided to the lower end portion of the insertion cylindrical portion 35. The leaked water introduced to the lower end portion of the insertion cylindrical portion 35 is prevented from being sucked up by the large radial gap 29 and flows downward from the lower end portion of the insertion cylindrical portion 35. The leaked water flowing down from the lower end portion of the insertion tube 35 can flow down into the water tank 4 through the lower open space 51. Thus, the water leakage from the connection gap 15 can flow down into the water tank 4 without being sucked up by the capillary action in the narrow upper gap 17.

Third Embodiment
Next, a shower nozzle 20 according to a third embodiment will be described with reference to FIGS. 11A to 13. In the third embodiment, components having the same functions as the components in the first embodiment and the second embodiment are denoted by the same reference numerals, and redundant description will be omitted. 11A to 11D show the upper member 30 of the shower nozzle 20, and FIGS. 12A to 12D show the lower member 40 of the shower nozzle 20. FIG. 13 is an end view showing the shower nozzle 20 attached to the mounting plate portion 11 of the mounting member 8.

  The lower member 40 includes a lower flange 41 having an annular notch 54 and a rib 43 having an insertion groove 44. In the third embodiment, the lower open space 51 is provided at the lower part of the insertion cylinder 35 and is formed by the lower end of the insertion cylinder 35 and the lower pipe 42 of the lower member 40. The lower open space 51 guides the leaked water from the connection gap 15 downward to flow into the water tank 4.

  In the shower nozzle 20 according to the third embodiment, the insertion cylinder 35 includes an annular recess 37, and the connection cylinder 45 includes a claw 47. As shown in FIG. 11D, an annular recess 37 is formed on the inner peripheral surface of the insertion cylinder 35. As shown in FIGS. 12C and 12D, a claw portion 47 which has a trapezoidal shape in a sectional view and which spreads downward is formed on the outer peripheral surface of the downstream end of the connection cylindrical portion 45. The claw portion 47 extends over the entire circumference of the outer peripheral surface of the connection cylindrical portion 45. As shown in FIG. 13, the claws 47 are connected to the recess 37 in a loose engagement. Note that the claws 47 may be arranged in a fragmented manner (ie, partially) on the outer peripheral surface of the connection cylindrical portion 45.

  Similar to the second embodiment, the projecting length of the insertion cylindrical portion 35 is dimensioned to be substantially the same as the thickness of the mounting plate portion 11, and the lower surface of the mounting plate portion 11 and the insertion groove 44 The upper end portion of the outer peripheral surface is substantially flush. The projecting length of the insertion tube 35 can be varied within the range from the thickness of the mounting plate 11 to the depth of the insertion groove 44.

  Further, as in the second embodiment, as shown in FIG. 13, a radial gap 29 formed in a cylindrical shape between the insertion cylinder 35 and the nozzle mounting hole 25 is formed on the outer peripheral portion of the insertion cylinder 35. It is provided. The radial gap 29 is preferably configured to a radial width dimension which does not cause capillary action, ie at least 1 mm.

  The screw 27 is inserted into the female screw holes 33 a and 34 a of the upper member 30 and the screw insertion holes 43 a and 44 a of the mounting plate portion 11, and the lower member 40 is screwed to the upper member 30 and the mounting plate portion 11. It is fixed by. Since the lower member 40 is rigidly fixed to the upper member 30 and the mounting plate portion 11 with the screw 27, the claw portion 47 is connected to the concave portion 37 by the detachable loosening engagement. Therefore, the shower nozzle 20 is configured to be removable.

  According to the configuration of the third embodiment, the claw portion 47 engages with the concave portion 37, and the lower member 40 is fixed to the upper member 30 and the mounting plate portion 11 by the screw 27. Water leaked from the connection gap 15 in the claw portion 47 and the concave portion 37 is guided to the lower end portion of the insertion cylindrical portion 35. The leaked water led to the lower end of the insertion tube 35 can flow down into the water tank 4 through the lower open space 51. Thus, the water leakage from the connection gap 15 can flow down into the water tank 4 without being sucked up by the capillary action in the narrow upper gap 17.

Fourth Embodiment
The shower nozzle 20 according to the fourth embodiment will be described with reference to FIGS. 14A to 15. In the fourth embodiment, components having the same functions as the components in the third embodiment are given the same reference numerals, and redundant description will be omitted. 14A to 14D show the lower member 40 of the shower nozzle 20, and FIG. 15 is an end view showing the shower nozzle 20 attached to the mounting plate 11 of the mounting member 8. As shown in FIG.

  In the lower member 40 of the fourth embodiment, the connection cylindrical portion 45 includes the claw portion 47 in comparison with the third embodiment described above, but the disposition of the lower flange 41 and the rib 43 is omitted. An annular recess 37 is formed inside the insertion cylinder 35 of the upper member 30, and the claws 47 are connected to the recess 37 by a strong engagement. Since the lower flange 41 is omitted and there is no fixation by the screw 27, the engagement between the claw portion 47 and the concave portion 37 is constituted by a non-detachable strong engagement, and the lower member 40 is connected to the upper member 30 ing. Since the screw 27 is unnecessary, the number of parts and the number of operation steps can be reduced.

  Since the lower member 40 is not provided with the lower flange 41 and the rib 43, the lower open space 51 extends below the insertion cylindrical portion 35. The lower open space 51 is formed by the lower end portion of the insertion cylindrical portion 35 and the lower pipe portion 42 of the lower member 40. Since the lower open space 51 in the fourth embodiment does not include the plurality of ribs 43, the lower open space 51 is a space more open than the lower open space 51 in the third embodiment. In the fourth embodiment, the leaked water from the connection gap 15 can be led downward and flow down into the water tank 4 through the lower open space 51 extending downward of the insertion cylindrical portion 35. Thus, the water leakage from the connection gap 15 can flow down into the water tank 4 without being sucked up by the capillary action in the narrow upper gap 17.

  In addition, the removable connection structure between the insertion cylinder part 35 of the upper member 30 and the connection cylinder part 45 of the lower member 40 can be made into various aspects. For example, in the screwing structure in which the lower member 40 is connected to the upper member 30 by screwing an external screw formed on the outer surface of the connection cylindrical portion 45 with a female screw formed on the inner surface of the insertion cylindrical portion 35 It may be. Further, the lower member 40 and the upper member 30 are engaged with the bayonet grooves formed in the insertion cylindrical portion 35 by the plurality of projections arranged at equal intervals in the circumferential direction on the outer surface of the connecting cylindrical portion 45. It may be a bayonet structure connected.

  Further, as in the second embodiment, as shown in FIG. 15, a radial gap 29 formed in a cylindrical shape between the insertion cylinder 35 and the nozzle mounting hole 25 is formed on the outer peripheral portion of the insertion cylinder 35. It is provided. The radial gap 29 is preferably configured to a radial width dimension which does not cause capillary action, ie at least 1 mm.

(Comparative example)
Next, in order to facilitate understanding of the features of the present invention described above, the shower nozzle 20 according to the comparative example will be described with reference to FIGS. 16A to 18. In this comparative example, components having the same functions as the components in the first to fourth embodiments are denoted by the same reference numerals, and redundant description will be omitted. 16A to 16D show the upper member 30 of the shower nozzle 20 of the comparative example, and FIGS. 17A to 17D show the lower member 40 of the shower nozzle 20 of the comparative example. FIG. 18 is an end view showing a state in which the shower nozzle 20 of the comparative example is attached to the attachment plate portion 11 of the attachment member 8.

  The shower nozzle 20 is attached to the attachment member 8 in a state in which the attachment plate portion 11 is held between the upper member 30 and the lower member 40. In the upper member 30, the upper flange 31 abuts on the upper surface of the mounting plate portion 11, and the insertion cylindrical portion 35 is inserted into the nozzle mounting hole 25. The radial clearance 29 is formed between the insertion cylinder 35 and the nozzle mounting hole 25. The radial clearance 29 is a narrow clearance of about 0.5 mm. The projecting length of the insertion cylindrical portion 35 of the upper member 30 is dimensioned so as to be substantially the same as the thickness of the mounting plate portion 11. That is, the lower surface of the mounting plate portion 11 and the lower end portion of the insertion cylindrical portion 35 are substantially flush.

  The lower flange 41 of the lower member 40 horizontally extends in a flat plate shape, and a positioning hole 46 and screw insertion holes 43 a and 44 a are formed in the lower flange 41. The positioning hole 46 and the screw insertion holes 43 a and 44 a are located on the outer peripheral side of the radial gap 29. And the lower flange 41 of the comparative example is not provided with the annular notch 54. In the configuration of the comparative example, since the closed space 19 surrounded by the lower flange 41, the connection cylindrical portion 45, and the mounting plate portion 11 is formed, the leaked water from the connection gap 15 remains in the closed space 19. I will. Water remaining in the enclosed space 19 is drawn up by capillary action in the narrow radial gap 29. The water sucked up in the radial gap 29 is further sucked up by capillary action in the narrow upper gap 17. The water sucked up by the upper gap 17 flows along the upper surface of the mounting plate portion 11, and finally, water leakage out of the water tank 4 occurs. Therefore, in the shower nozzle 20 according to the comparative example, water leakage to the outside of the water tank 4 occurs due to the capillary phenomenon in the narrow radial gap 29 and the narrow upper gap 17.

As mentioned above, the washing machine 1 of this invention is
A storage tank 3 for storing laundry;
A water supply nozzle 20 for supplying water to the laundry stored in the storage tank 3;
And a mounting member 8 having a nozzle mounting hole 25 for mounting the water supply nozzle 20,
The water supply nozzle 20 includes a first member 30 provided on the upstream side and a second member 40 provided on the downstream side,
The first member 30 has an insertion cylindrical portion 35 provided at the downstream end and inserted into the nozzle mounting hole 25;
The second member 40 has a connection cylindrical portion 45 inserted into the insertion cylindrical portion 35,
The connection cylindrical portion 45 is inserted into the insertion cylindrical portion 35 via a sealing member 28 that seals the connection gap 15 formed between the insertion cylindrical portion 35 and the connection cylindrical portion 45,
A lower open space 51 formed by the lower end portion of the insertion cylindrical portion 35 and the lower pipe portion 42 of the second member 40 is disposed below the insertion cylindrical portion 35.

  According to the above configuration, the lower open space 51 provided below the insertion cylindrical portion 35 of the first member 30 guides the water leaked from the connection gap 15 downward and attaches it to the upstream first member 30 The suction due to the capillary phenomenon in the upper gap 17 formed between the members 8 is prevented. Therefore, in the case where the water supply nozzle 20 is formed of two members, the first member 30 and the second member 40, even if water leaks from the connection gap 15, the water tank 4 to the outside due to the capillary phenomenon in the upper gap 17. Water leakage can be prevented.

  It is preferable that a lower flange 41 having an annular notch 54 be disposed on the outside of the insertion cylindrical portion 35.

  According to the above configuration, the annular notch 54 serves as a part of the lower open space 51 or as an insertion hole for inserting the insertion tube 35.

  It is preferable that the insertion cylindrical portion 35 have an extending portion 35 b which extends lower than the lower surface of the mounting member 8.

  According to the above configuration, the suction in the upper gap 17 can be prevented, and the water leaked from the connection gap 15 can be more reliably guided downward.

  It is preferable that a radial gap 29 of at least 1 mm be disposed between the outer peripheral surface of the insertion cylindrical portion 35 and the nozzle mounting hole 25.

  According to the above configuration, suction at the upper gap 17 can be more reliably prevented.

  It is preferable that the claws 47 provided on the outer peripheral surface of the downstream end of the connection cylindrical portion 45 engage with the concave portions 37 provided on the inner peripheral surface of the insertion cylindrical portion 35.

  According to the above configuration, the second member 40 is supported by the first member 30 by the engagement structure of the connection cylindrical portion 45 and the insertion cylindrical portion 35, and the mounting by the screw or the like can be simplified or omitted.

  Although the embodiment of the present invention has been specifically described, the present invention is not limited to the above embodiment, and can be implemented with various modifications within the scope of the present invention.

  In the first to fourth embodiments, the connection gap 15 is formed by interposing the O-ring 28 as a sealing member between the downstream end surface of the upper pipe portion 32 and the upstream end surface of the connection cylindrical portion 45. Preventing water leakage from However, in the first to fourth embodiments described above, the lower open space 51 is provided below the insertion cylindrical portion 35 of the second member 40 so that the leaked water from the connection gap 15 flows down into the water tank 4. Water leakage to the outside of the water tank 4 is prevented. Therefore, even if the sealing performance at the connection gap 15 is insufficient due to a mounting failure or mounting failure of the O-ring 28, water leakage to the outside of the water tank 4 can be prevented.

  Also in the first embodiment, the third embodiment and the fourth embodiment, as described in the second embodiment, the radial gap 29 formed in the radial direction between the insertion cylindrical portion 35 and the nozzle mounting hole 25 Can be configured to be at least 1 mm.

  Further, also in the second embodiment, the third embodiment, and the fourth embodiment, as described in the first embodiment, the extending portion 35b in which the insertion cylindrical portion 35 extends vertically downward relative to the lower surface of the mounting plate portion 11. Can be provided. In the third and fourth embodiments, the recess 37 is provided at the downstream end of the extending portion 35 b.

  The washing machine 1 described above may have a drying function or may not have a drying function. When the washing machine 1 has a drying function, the drying function is provided by, for example, a heater drying method in which warm air is generated by a sheathed heater or a heat pump drying method in which warm air is generated by a heat pump.

  Although the vertical washing machine 1 in which the washing tub 3 is disposed in the vertical direction of the washing machine 1 is illustrated in the above embodiment, the present invention is not limited to the vertical washing machine 1. The present invention can also be applied to a horizontal drum type washing machine in which the washing tub 3 is arranged in the horizontal direction, or an oblique drum washing machine in which the washing tub 3 is arranged to be inclined with respect to the horizontal direction. Moreover, this invention is applicable not only to the fully automatic washing machine 1 but also to a two-tank washing machine in which a washing tub and a dewatering tub are provided separately.

  In addition, water supply by the shower nozzle 20 can be suitably performed in each process, such as a pre-washing process, a main washing process, a rinse process, and a dehydration process. The water supply nozzle 20 changes the second member 40 to form a mist of water and spread and spray a conical mist, and a swirling flow of granular droplets and a spread and conical droplet The shower flow can be changed to the jetted mode.

1 Vertical washing machine (washing machine)
1a Outer box 2 upper lid 2a outer box opening 3 washing tank (storage tank)
4 water tank 5 top plate 8 mounting member 11 mounting plate portion 15 connection gap 17 upper gap 20 shower nozzle (water supply nozzle)
21 mounting plate portion 23 nozzle water supply valve 24 nozzle water supply pipe 25 nozzle mounting hole 26 positioning hole 27 screw 28 O ring (sealing member)
29 Radial clearance (wrap around part)
30 Upper member (first member)
31 upper flange 32 upper pipe portion 35 insertion cylindrical portion 35 a connection hole 35 b extending portion (wrapping prevention portion)
36 Positioning boss 37 Recess 40 Lower member (second member)
41 lower flange 42 lower pipe portion 43 rib 44 insertion groove (lower open space)
45 Connection tube 46 46 Positioning hole 47 Claw 48 Injection hole 51 Lower open space 54 Annular notch

Claims (5)

A storage tank for storing laundry,
A water supply nozzle for supplying water to the laundry stored in the storage tank;
And a mounting member having a nozzle mounting hole for mounting the water supply nozzle.
The water supply nozzle includes a first member provided on the upstream side, and a second member provided on the downstream side,
The first member has an insertion cylindrical portion provided at the downstream end and inserted into the nozzle mounting hole,
The second member has a connection tube portion inserted into the insertion tube portion, and a lower tube portion formed continuously with the lower end portion of the connection tube portion .
The connection cylindrical portion is inserted into the insertion cylindrical portion via a sealing member that seals a connection gap formed between the insertion cylindrical portion and the connection cylindrical portion.
A washing machine characterized in that a lower open space formed by a lower end portion of the insertion cylindrical portion and the lower pipe portion of the second member is disposed below the insertion cylindrical portion. In the washing machine according to claim 1,
The lower flange portion which is a part of the second member is placed on the outside of the connecting tube portion to have a circular cutout, and, attached to said mounting member,
The washing machine the insertion tube as the lower open space below the mounting member is located, and wherein Rukoto is inserted into the annular notch. In the washing machine according to claim 1 or 2,
The said insertion cylinder part has an extending | stretching part extended below rather than the lower surface of the said attachment member, The washing machine characterized by the above-mentioned. The washing machine according to any one of claims 1 to 3.
A washing machine characterized in that a radial gap of at least 1 mm is disposed between the outer peripheral surface of the insertion cylinder and the nozzle mounting hole. The washing machine according to any one of claims 1 to 4.
A washing machine characterized in that a claw portion provided on the outer peripheral surface of the downstream end of the connection cylindrical portion engages with a concave portion provided on the inner peripheral surface of the insertion cylindrical portion.

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