Washing machine

Abstract

To provide a cleaning machine that can suppress wear on bearing stoppers. [Solution] The dishwasher comprises a nozzle having a first spray hole for spraying wash water and a second spray hole for spraying rinse water, and a support part that rotatably supports the nozzle and forms part of the flow path for rinse water leading to the nozzle. The support part comprises a shaft having a supply hole for supplying rinse water to the nozzle and a supply flow path for supplying rinse water to the supply hole, a bearing rotatably mounted on the shaft to which the nozzle is connected, and a shaft part that rotatably mounts the bearing on the shaft. The shaft has a first flow path into which rinse water flows from the supply flow path, and the first flow path supplies rinse water to the part where the shaft part and the bearing slide when the nozzle rotates.

Description

Technical Field

[0001] The present invention relates to a washing machine.

Background Art

[0002] Patent Document 1 discloses a washing machine including a nozzle provided in a washing chamber for accommodating an object to be washed, the nozzle spraying washing water or rinsing water into the washing chamber while rotating in one direction, and a support portion provided in the washing chamber for rotatably supporting the nozzle. The support portion has a shaft, a bearing rotatably provided with respect to the shaft, and a bearing stopper for rotatably attaching the bearing to the shaft.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the bearing is a portion that slides with respect to the bearing stopper, it is formed of a resin member containing a material capable of ensuring slidability rather than strength. The bearing stopper is formed of a metal member in order to ensure strength.

[0005] As shown in Figure 23, foreign matter F may enter the sliding surface between the bearing 111 and the bearing stopper 112. Foreign matter F refers to fine metallic particles contained in the washing water (alumina contained as an abrasive in scouring pads, iron powder detached from pots, etc.), food residue, etc. When a washing operation is performed with foreign matter F inside the bearing stopper 112 and the bearing 111, the water pressure causes the nozzle 120 to move away from the support part 110 (in the direction of the arrow), pressing the bearing 111 against the sliding surface with the bearing stopper 112 (the area enclosed by the dashed line), and the foreign matter F may become embedded in the resin bearing 111. In this state, when the nozzle 120 rotates, the foreign matter F embedded in the bearing 111 may wear down the sliding surface between the bearing 111 and the bearing stopper 112. When the bearing stopper 112 wears down, problems such as the nozzle 120 rattling may occur during the washing operation. This could result in improper cleaning.

[0006] Furthermore, oil and food residue may enter the sliding parts between the nozzle and shaft during cleaning. This can reduce the sliding properties between the nozzle and shaft, potentially causing wear on these sliding parts. When these parts wear down, the gap between the worn parts widens, potentially allowing cleaning water to enter the rinse water channel.

[0007] The present invention aims to provide a cleaning machine that can suppress wear on the support parts. [Means for solving the problem]

[0008] (1) The washing machine according to the present invention comprises a nozzle having a first injection hole for spraying washing water and a second injection hole for spraying rinsing water, and a support part that rotatably supports the nozzle and forms a part of the flow path for rinsing water to the nozzle, wherein the support part comprises a shaft having a supply hole for supplying rinsing water to the nozzle and a supply flow path for supplying rinsing water to the supply hole, a bearing that is rotatably mounted on the shaft and to which the nozzle is connected, and a shaft part that rotatably mounts the bearing on the shaft, wherein the shaft has a first flow path into which rinsing water flows from the supply flow path and which supplies rinsing water to the part in which the shaft part and the bearing slide when the nozzle rotates.

[0009] In the cleaning machine according to the present invention, the shaft has a first channel through which rinsing water flows in from the supply channel, and which supplies rinsing water to the part where the shaft and the bearing slide when the nozzle rotates (hereinafter also simply referred to as the "sliding part"). As a result, in the cleaning machine, rinsing water is supplied to the sliding part from the supply channel via the first channel. As a result, even if foreign matter enters the sliding part in the cleaning machine, the foreign matter can be removed (cleaned) by the rinsing water. Therefore, in the cleaning machine, foreign matter can be prevented from getting stuck in the bearing, and thus wear can be prevented on the part where the shaft and the bearing slide. Consequently, wear on the support part can be prevented in the cleaning machine.

[0010] Furthermore, the rinse water is hot. Therefore, in a washing machine, the hot rinse water flows over the part where the shaft and bearing slide together, which helps to prevent oil from remaining on that part. As a result, the washing machine can prevent the sliding performance of the part where the shaft and bearing slide together from being reduced by oil.

[0011] (2) In the washing machine described in (1) above, the shaft portion may have a second flow channel into which rinsing water flows from the supply flow channel, the second flow channel extending in the direction of extension of the shaft portion, and a third flow channel into which rinsing water flows from the second flow channel, the third flow channel supplying rinsing water to the outer surface of the shaft portion facing the bearing. In this configuration, rinsing water is supplied between the bearing and the shaft portion by the third flow channel. As a result, the washing machine can clean the part where the shaft portion and the bearing slide against each other with rinsing water.

[0012] (3) In the washing machine described in (1) above, the support part has a stopper which is provided at the end of the shaft part and which restricts the movement of the bearing shaft part in the extending direction, and a second flow path into which rinsing water flows from the supply flow path and which extends in the extending direction of the shaft part, and the shaft part may have a fourth flow path into which rinsing water flows from the second flow path and which supplies rinsing water to the part in which the bearing and the head part slide. In this configuration, rinsing water is supplied to the part in which the bearing and the head part slide through the fourth flow path. As a result, the washing machine can wash the part in which the head part and the bearing part slide with rinsing water.

[0013] (4) In the washing machine described in (2) above, the bearing may have a fifth passage that is positioned opposite the third passage of the shaft and into which rinse water flows from the third passage, and which supplies rinse water to the portion where the bearing and the nozzle engage. In this configuration, rinse water is supplied to the portion where the bearing and the nozzle engage through the fifth passage. As a result, the washing machine can clean the portion where the bearing and the nozzle engage with the rinse water.

[0014] (5) The washing machine according to the present invention comprises a nozzle having a first injection hole for spraying washing water and a second injection hole for spraying rinsing water, and a support part that rotatably supports the nozzle and forms a part of the flow path for rinsing water to the nozzle, wherein the support part has a shaft having a supply hole for supplying rinsing water to the nozzle and a supply flow path for supplying rinsing water to the supply hole, and the shaft has a flow path into which rinsing water flows from the supply flow path, and the flow path supplies rinsing water to the part in which the shaft and the nozzle slide when the nozzle rotates.

[0015] In the washing machine according to the present invention, the shaft has a passage through which rinse water flows in from a supply passage, and the rinse water is supplied to the part where the shaft and nozzle slide when the nozzle rotates. As a result, in the washing machine, rinse water is supplied to the sliding part from the supply passage via the passage. As a result, even if oil or food residue enters the sliding part in the washing machine, the oil or food residue can be removed (washed) by the rinse water. Therefore, the washing machine can suppress a decrease in the sliding performance between the nozzle and the shaft. Consequently, the washing machine can suppress wear on the support part. [Effects of the Invention]

[0016] According to the present invention, wear of the support portion can be suppressed. [Brief explanation of the drawing]

[0017] [Figure 1] Figure 1 is a perspective view of a dishwasher according to one embodiment. [Figure 2] Figure 2 is a cross-sectional view showing the schematic configuration of a dishwasher. [Figure 3] Figure 3 is a perspective view of the upper nozzle. [Figure 4] Figure 4 shows a cross-sectional configuration of the upper nozzle and a portion of the upper support according to the first embodiment. [Figure 5] Figure 5 is a perspective view showing a portion of the cross-sectional configuration of the upper nozzle (lower nozzle) and the upper support section (lower support section). [Figure 6]FIG. 6 is a diagram for explaining the flow of rinsing water in the upper nozzle and the upper support portion according to the first embodiment. [Figure 7] FIG. 7 is a perspective view of the lower nozzle. [Figure 8] FIG. 8 is a diagram showing a partial cross-sectional configuration of the lower nozzle and the lower support portion according to the first embodiment. [Figure 9] FIG. 9 is a diagram for explaining the flow of rinsing water in the lower nozzle and the lower support portion according to the first embodiment. [Figure 10] FIG. 10 is a diagram showing a partial cross-sectional configuration of the upper nozzle and the upper support portion according to the second embodiment. [Figure 11] FIG. 11 is a perspective view showing a partial cross-sectional configuration of the upper nozzle (lower nozzle) and the upper support portion (lower support portion). [Figure 12] FIG. 12 is a diagram for explaining the flow of rinsing water in the upper nozzle and the upper support portion according to the second embodiment. [Figure 13] FIG. 13 is a diagram showing a partial cross-sectional configuration of the lower nozzle and the lower support portion according to the second embodiment. [Figure 14] FIG. 14 is a diagram for explaining the flow of rinsing water in the lower nozzle and the lower support portion according to the second embodiment. [Figure 15] FIG. 15 is a diagram showing a partial cross-sectional configuration of the upper nozzle and the upper support portion according to the third embodiment. [Figure 16] FIG. 16 is a diagram for explaining the flow of rinsing water in the upper nozzle and the upper support portion according to the third embodiment. [Figure 17] FIG. 17 is a diagram showing a partial cross-sectional configuration of the lower nozzle and the lower support portion according to the third embodiment. [Figure 18] FIG. 18 is a diagram for explaining the flow of rinsing water in the lower nozzle and the lower support portion according to the third embodiment. [Figure 19] FIG. 19 is a diagram showing a partial cross-sectional configuration of the upper nozzle and the upper support portion according to the fourth embodiment. [Figure 20]Figure 20 is a diagram illustrating the flow of rinse water in the upper nozzle and upper support section according to the fourth embodiment. [Figure 21] Figure 21 shows a cross-sectional view of the lower nozzle and a portion of the lower support according to the fourth embodiment. [Figure 22] Figure 22 is a diagram illustrating the flow of rinse water in the lower nozzle and lower support section according to the fourth embodiment. [Figure 23] Figure 23 is a schematic diagram showing the upper nozzle (lower nozzle) and upper support section (lower support section) in a conventional washing machine. [Modes for carrying out the invention]

[0018] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant descriptions are omitted. The dimensional ratios in the drawings do not necessarily correspond to those in the description. In the following description, for the sake of explanation, the directions (up and down direction, front and back direction, left and right direction (width direction)) as defined in Figure 1 will be defined.

[0019] Figure 1 is a perspective view of a dishwasher according to one embodiment. Figure 2 is a cross-sectional view showing the schematic configuration of the dishwasher. As shown in Figures 1 and 2, the dishwasher (washer) 1 has a washing machine body 2 covered with stainless steel panels. The washing machine body 2 is divided into an upper part 2A in which a washing chamber 3 is formed and a lower part 2B in which a machine room 4 is formed. At the corner on the rear side of the washing machine body 2, a support column 6 is arranged that extends vertically across the upper part 2A and the lower part 2B, and a rear panel 5 is arranged between the support columns 6, 6.

[0020] The upper part 2A of the washing machine body 2 is provided with a box-shaped door 7 for opening and closing the washing chamber 3. This door 7 is guided to move up and down freely by a pair of stainless steel support columns 6, 6 and is also moved up and down by a handle 8A that extends horizontally at the front.

[0021] The ends of a pair of left and right rotating arms 8B, 8B are fixed to both ends of the handle 8A, and the rotating arms 8B, 8B are positioned diagonally along the side 7A of the door 7. One end of a link section 8C, which is positioned along the side 7A of the door 7, is rotatably connected to the rotating arms 8B, 8B, and the other end of the link section 8C is connected to the door 7 via an axle pin 8D, so that the door 7 can move up and down in response to the rotational movement of the handle 8A. Legs 9 are attached to the four corners of the bottom surface of the washing machine body 2.

[0022] As shown in Figure 2, a rack rail 10 is detachably arranged inside the washing chamber 3, and a grid-like dish rack on which dishes such as plates and bowls (items to be washed) are arranged is placed on this rack rail 10. An upper nozzle 11 is located at the top of the washing chamber 3. A lower nozzle 12 is located at the bottom of the washing chamber 3.

[0023] A cleaning water tank 15 is provided at the bottom of the cleaning chamber 3 so as to protrude into the machine room 4. A filter 16 is detachably positioned between the cleaning chamber 3 and the cleaning water tank 15. A cleaning pump 17 is connected to the front of the cleaning water tank 15 via a cleaning water intake. A cleaning water discharge pipe 18 is connected to the discharge port of the cleaning pump 17. The cleaning water discharge pipe 18 branches into a first cleaning water discharge pipe 18A and a second cleaning water discharge pipe 18B. The first cleaning water discharge pipe 18A is connected to the upper nozzle 11, and the second cleaning water discharge pipe 18B is connected to the lower nozzle 12.

[0024] Inside the machine room 4, there is a rinse water tank 19 to which rinse water is supplied from the outside via a water supply pipe (not shown). A rinse pump 21 is connected to the rinse water tank 19 via a rinse water suction pipe 20. A rinse water discharge pipe 22 is connected to the discharge port of the rinse pump 21. The rinse water discharge pipe 22 branches into a first rinse water discharge pipe 22A and a second rinse water discharge pipe 22B, with the first rinse water discharge pipe 22A connected to the upper nozzle 11 and the second rinse water discharge pipe 22B connected to the lower nozzle 12.

[0025] The machine room 4 houses an electrical box (not shown) containing a controller 23 that controls the overall operation of the dishwasher 1.

[0026] [First Embodiment] Next, the upper nozzle 11 and upper support portion 13, and the lower nozzle 12 and lower support portion 14 according to the first embodiment will be described in detail.

[0027] Figure 3 is a perspective view of the upper nozzle 11. As shown in Figure 3, the upper nozzle 11 is located above the washing chamber 3. The upper nozzle 11 is rotatably mounted on an upper support portion 13 located above the washing chamber 3. The upper nozzle 11 has a main body portion 30 that extends radially from the base end, which is the rotation center of the rotation axis of the upper nozzle 11, to the tip. The main body portion 30 integrally includes a washing injection hole (first injection hole) 31 for injecting washing water stored in the washing water tank 15, a washing channel 32 (see Figure 5) that extends from the rotation center to the washing injection hole 31 and through which washing water flows, a rinsing injection hole (second injection hole) 33 for injecting rinsing water stored in the rinsing water tank 19, and a rinsing channel 34 (see Figure 5) that extends from the rotation center to the rinsing injection hole 33 and through which rinsing water flows. The upper nozzle 11 rotates when the flow of cleaning water generated in the cleaning channel 32 or the flow of rinsing water generated in the rinsing channel 34 is converted into rotational force. The upper nozzle 11 is connected to a first cleaning water discharge pipe 18A that supplies cleaning water to the cleaning channel 32 and a first rinsing water discharge pipe 22A that supplies rinsing water to the rinsing channel 34.

[0028] The upper nozzle 11 is equipped with a detachment mechanism 37 for attaching and detaching the main body 30 from the upper support portion 13 provided in the washing chamber 3. The detachment mechanism 37 has a pair of knobs 37a, 37a (see Figure 5). The pair of knobs 37a, 37a protrude from the outer shape of the main body 30 along the operating direction (arrow direction). The detachment mechanism 37 can attach and detach the main body 30 from the upper support portion 13 by pressing both of the pair of knobs 37a, 37a toward each other along the operating direction.

[0029] Figure 4 is a diagram showing a cross-sectional configuration of the upper nozzle 11 and a part of the upper support portion 13 according to the first embodiment. As shown in Figure 4, the upper support portion 13 has a shaft 130, a bearing 131, and a bearing stopper 132.

[0030] The shaft 130 is a hollow member. In this embodiment, the shaft 130 has a cylindrical shape. The shaft 130 is inserted into the first rinse water discharge pipe 22A. Specifically, the upper end of the shaft 130 is inserted into the lower end of the first rinse water discharge pipe 22A. The shaft 130 has a first flow path (supply flow path according to claim 1) 130A, a second flow path 130B, a third flow path 130C, a fourth flow path 130D, a fifth flow path (first flow path according to claim 1) 130E, and a supply hole 130G.

[0031] The first channel 130A allows rinse water supplied from the first rinse water discharge pipe 22A to flow into the shaft 130. Rinse water is supplied to the first channel 130A from an inlet (not shown) located at the upper end of the shaft 130. The second channel 130B communicates with the first channel 130A via the third channel 130C. The second channel 130B supplies rinse water to the fifth channel 130E and the supply hole 130G. The third channel 130C connects the first channel 130A and the second channel 130B. The third channel 130C has a smaller channel diameter than the first channel 130A.

[0032] The fourth channel 130D is in communication with the threaded portion 130H. The threaded portion 130H is the part where the threaded portion 132C of the bearing stopper 132 is screwed onto the shaft 130. The fourth channel 130D may also be part of the threaded portion 130H. The fifth channel 130E connects the second channel 130B and the fourth channel 130D. The fifth channel 130E extends along the vertical direction. The fifth channel 130E supplies rinse water from the first channel 130A to the threaded portion 130H (fourth channel 130D).

[0033] The supply holes 130G supply rinse water to the upper nozzle 11. The supply holes 130G supply rinse water that has flowed in from the inlet to the rinse passage 34 of the upper nozzle 11. In this embodiment, a plurality (for example, four) of supply holes 130G are provided. The supply holes 130G are formed to penetrate the inside and outside of the shaft 130. The supply holes 130G are arranged at predetermined intervals in the circumferential direction of the shaft 130. The supply holes 130G are, for example, circular in shape.

[0034] The bearing 131 is enclosed on the bearing stopper 132 and is rotatably mounted relative to the bearing stopper 132. Specifically, the bearing 131 rotates while sliding between the lower surface of the shaft 130 and the upper surface of the head 132A of the bearing stopper 132. The attachment / detachment mechanism 37 for the upper nozzle 11 is connected to the bearing 131. The upper nozzle 11 is integrated with the bearing 131 by the engagement of the first engaging portion 37d and the second engaging portion 37e of the attachment / detachment mechanism 37 with the recess 131A provided in the bearing 131. As a result, the upper nozzle 11 is rotatably mounted relative to the upper support portion 13.

[0035] Figure 5 is a perspective view showing a portion of the cross-sectional configuration of the upper nozzle 11 (lower nozzle 12) and the upper support portion 13 (lower support portion 14). As shown in Figure 5, the outer shape of the bearing 131 is rectangular. The rectangular shape may include a rectangular shape with chamfered corners and a rectangular shape with rounded corners. In this embodiment, the outer shape of the bearing 131 is a rectangular shape with rounded corners.

[0036] The first engaging portion 37d and the second engaging portion 37e of the attachment / detachment mechanism 37 engage with the bearing 131 by meshing with the bearing 131. Meshing means that the first engaging portion 37d and the second engaging portion 37e and the bearing 131 interlock with each other (either the protrusions or indentations of both sides come into contact). Therefore, for example, if the outer shape of the bearing 131 is circular and the first engaging portion 37d and the second engaging portion 37e are shaped to follow the outer shape of the bearing 131 (arc-shaped), they will not mesh with each other.

[0037] As shown in Figure 4, the bearing 131 has a recess 131A. The recess 131A is the part into which the first engaging portion 37d and the second engaging portion 37e of the attachment / detachment mechanism 37 engage.

[0038] As shown in Figure 4, the bearing stopper 132 is detachably mounted on the shaft 130. The bearing stopper 132 is, for example, a screw. The bearing stopper 132 is screwed onto the threaded portion 130H of the shaft 130. The bearing stopper 132 has a head portion 132A, a shaft portion 132B, and a threaded portion 132C.

[0039] The head portion 132A restricts the movement of the shaft portion 132B of the bearing 131 in the extending direction. The shaft portion 132B connects the head portion 132A to the threaded portion 132C. The threaded portion 132C is screwed into the threaded portion 130H of the shaft 130.

[0040] Figure 6 is a diagram illustrating the flow of rinse water in the upper nozzle 11 and upper support section 13 according to the first embodiment. As shown in Figures 4 and 6, the rinse water supplied from the first rinse water discharge pipe 22A flows into the first flow path 130A of the shaft 130, passes through the third flow path 130C and the second flow path 130B, and is supplied to the rinse flow path 34 from the supply hole 130G.

[0041] Furthermore, the rinse water flows from the second channel 130B into the fifth channel 130E and is supplied to the fourth channel 130D. This rinse water flows from the fourth channel 130D through the gap between the threaded portion 132C of the bearing stopper 132 and the threaded portion 130H of the shaft 130. In addition, the rinse water flows through the gap between the bearing 131 and the shaft portion 132B of the bearing stopper 132, and through the gap (sliding portion) between the lower surface of the bearing 131 and the upper surface of the head 132A of the bearing stopper 132.

[0042] Next, the lower nozzle 12 and the lower support portion 14 will be described in detail.

[0043] Figure 7 is a perspective view of the lower nozzle 12. As shown in Figure 7, the lower nozzle 12 is located below the washing chamber 3. The lower nozzle 12 is rotatably mounted on a lower support portion 14 located below the washing chamber 3. The lower nozzle 12 has a main body portion 40 that extends radially from the base end, which is the rotation center of the rotation axis of the lower nozzle 12, to the tip. The main body portion 40 integrally includes a washing injection hole (first injection hole) 41 for injecting washing water stored in the washing water tank 15, a washing channel 42 (see Figure 5) that extends from the rotation center to the washing injection hole 41 and through which washing water flows, a rinsing injection hole (second injection hole) 43 for injecting rinsing water stored in the rinsing water tank 19, and a rinsing channel 44 (see Figure 5) that extends from the rotation center to the rinsing injection hole 43 and through which rinsing water flows. The lower nozzle 12 rotates when the flow of cleaning water generated in the cleaning channel 42 or the flow of rinsing water generated in the rinsing channel 44 is converted into rotational force. The lower nozzle 12 is connected to a second cleaning water discharge pipe 18B that supplies cleaning water to the cleaning channel 42 and a second rinsing water discharge pipe 22B that supplies rinsing water to the rinsing channel 44.

[0044] The lower nozzle 12 is equipped with a detachment mechanism 47 for attaching and detaching the main body 40 from the lower support portion 14 provided in the washing chamber 3. The detachment mechanism 47 has a pair of knobs 47a, 47a (see Figure 5). The pair of knobs 47a, 47a protrude from the outer shape of the main body 40 along the operating direction (arrow direction). The detachment mechanism 47 can attach and detach the main body 40 from the lower support portion 14 by pressing both of the pair of knobs 47a, 47a toward each other along the operating direction.

[0045] Figure 8 shows a cross-sectional view of a part of the lower nozzle 12 and lower support portion 14 according to the first embodiment. As shown in Figure 8, the lower support portion 14 includes a shaft 140, a cap 141, a bearing 142, and a bearing stopper 143.

[0046] The shaft 140 is a hollow member. In this embodiment, the shaft 140 has a cylindrical shape. The shaft 140 is inserted into the second rinse water discharge pipe 22B. Specifically, the lower end of the shaft 140 is inserted into the upper end of the second rinse water discharge pipe 22B. The shaft 140 has a first flow path 140A, a second flow path 140B, a third flow path 140C, and a supply hole 140E.

[0047] The first channel 140A allows rinse water supplied from the second rinse water discharge pipe 22B to flow into the shaft 140. Rinse water is supplied to the first channel 140A from an inlet (not shown) located at the lower end of the shaft 140. The second channel 140B communicates with the first channel 140A via the third channel 140C. The second channel 140B supplies rinse water to the supply hole 140E. The third channel 140C connects the first channel 140A and the second channel 140B. The third channel 140C has a smaller channel diameter than the first channel 140A.

[0048] The supply holes 140E supply rinse water to the lower nozzle 12. The supply holes 140E supply rinse water that has flowed in from the inlet to the rinse passage 44 of the lower nozzle 12. In this embodiment, a plurality (for example, four) of supply holes 140E are provided. The supply holes 140E are formed to penetrate the inside and outside of the shaft 140. The supply holes 140E are arranged at predetermined intervals in the circumferential direction of the shaft 140. The supply holes 140E are, for example, circular in shape.

[0049] The cap 141 is inserted into the upper part of the shaft 140. The cap 141 constitutes a part of the shaft 140. The cap 141 and the shaft 140 may be formed integrally. The cap 141 has a recess 141A, a threaded portion 141B, a first flow path 141C, and a second flow path 141D. The recess 141A is provided at the bottom of the cap 141. Together with the shaft 140, the recess 141A forms part of the flow path for rinse water. The threaded portion 141B is provided at the top of the cap 141. A bearing stopper 143 is screwed into the threaded portion 141B.

[0050] The first channel 141C is in communication with the threaded portion 141B. The first channel 141C may also be part of the threaded portion 141B. The second channel 141D connects the recess 141A and the first channel 141C. The second channel 141D extends along the vertical direction. The second channel 141D carries rinse water.

[0051] The bearing 142 is housed on the bearing stopper 143 and is rotatably mounted relative to the bearing stopper 143. Specifically, the bearing 142 rotates while sliding between the lower surface of the cap 141 and the upper surface of the head 143A of the bearing stopper 143. The attachment / detachment mechanism 47 for the lower nozzle 12 is connected to the bearing 142. The lower nozzle 12 is integrated with the bearing 142 by the engagement of the first engaging portion 47d and the second engaging portion 47e of the attachment / detachment mechanism 47 with the recess 142A provided in the bearing 142. As a result, the lower nozzle 12 is rotatably mounted relative to the lower support portion 14.

[0052] As shown in Figure 5, the bearing 142 has a rectangular shape. The first engaging portion 47d and the second engaging portion 47e of the attachment / detachment mechanism 47 engage with the bearing 142 by meshing with the bearing 142.

[0053] As shown in Figure 8, the bearing 142 has a recess 142A. The recess 142A is the part into which the first engaging portion 47d and the second engaging portion 47e of the attachment / detachment mechanism 47 engage.

[0054] The bearing stopper 143 is detachably attached to the cap 141. The bearing stopper 143 is, for example, a screw. The bearing stopper 143 is screwed into the threaded portion 141B of the cap 141. The bearing stopper 143 has a head portion 143A, a shaft portion 143B, and a threaded portion 143C.

[0055] The head portion 143A restricts the movement of the shaft portion 143B of the bearing 142 in the extending direction. The shaft portion 143B connects the head portion 143A to the threaded portion 143C. The threaded portion 143C is screwed into the threaded portion 141B of the shaft 140.

[0056] Figure 9 is a diagram illustrating the flow of rinse water in the lower nozzle 12 and lower support section 14 according to the first embodiment. As shown in Figures 8 and 9, the rinse water supplied from the second rinse water discharge pipe 22B flows into the first flow path 140A of the shaft 140, passes through the third flow path 140C and the second flow path 140B, and is supplied to the rinse flow path 44 from the supply hole 140E.

[0057] Furthermore, the rinse water flows from the second channel 140B into the second channel 141D of the cap 141 and is supplied to the first channel 141C. This rinse water flows from the first channel 141C through the gap between the threaded portion 143C of the bearing stopper 143 and the threaded portion 141B of the cap 141. In addition, the rinse water flows through the gap between the bearing 142 and the shaft portion 143B of the bearing stopper 143, and through the gap (sliding portion) between the upper surface of the bearing 142 and the lower surface of the head 143A of the bearing stopper 143.

[0058] As described above, in the dishwasher 1 according to this embodiment, the shaft 130 (140) has a fifth passage 130E (second passage 141D) into which rinse water flows from the first passage 130A (140A), and the fifth passage 130E (second passage 141D) supplies rinse water to the part where the shaft portion 132B (143B) and the bearing 131 (142) slide when the upper nozzle 11 (lower nozzle 12) rotates. As a result, in the dishwasher 1, rinse water is supplied from the first passage 130A (140A) to the threaded portion 130H (141B) via the fifth passage 130E (second passage 141D). When rinse water is supplied to the threaded portion 130H (141B), the rinse water flows through the gap between the threaded portion 132C (143C) and the threaded portion 130H (141B), and the gap between the shaft portion 132B (143B) and the bearing 131 (142), and into the space (sliding surface) between the bearing 131 (142) and the head 132A (143A) of the bearing stopper 132 (143). As a result, in the dishwasher 1, even if foreign matter gets into the space between the bearing 131 (142) and the head 132A (143A) of the bearing stopper 132 (143), the foreign matter can be removed (cleaned) by the rinse water. Therefore, in dishwasher 1, foreign objects can be prevented from getting stuck in the bearing 131 (142), thus preventing wear on the sliding surface between the bearing 131 (142) and the head 132A (143A) of the bearing stopper 132 (143). Consequently, wear on the upper support part 13 (lower support part 14) can be suppressed in dishwasher 1.

[0059] Furthermore, the rinse water is hot. Therefore, in dishwasher 1, the hot rinse water flows between the bearing 131 (142) and the head 132A (143A) of the bearing stopper 132 (143) (sliding surface), which suppresses the residue of oil between the bearing 131 (142) and the head 132A (143A) of the bearing stopper 132 (143). As a result, dishwasher 1 can suppress the reduction in sliding performance between the bearing 131 (142) and the bearing stopper 132 (143) due to oil.

[0060] [Second Embodiment] Next, the upper nozzle 11 and upper support portion 13, and the lower nozzle 12 and lower support portion 14 according to the second embodiment will be described in detail.

[0061] Figure 10 shows a cross-sectional view of a part of the upper nozzle 11 and upper support portion 13 according to the second embodiment. As shown in Figure 10, the bearing 131 has a recess 131A and a flow path (fifth flow path of claim 3) 131B. The flow path 131B is formed to penetrate the inside (inner surface) and outside (outer surface) of the bearing 131. The flow path 131B is positioned opposite the second flow path 132E of the bearing stopper 132. The flow path 131B supplies rinse water supplied from the second flow path 132E of the bearing stopper 132 to the outside of the bearing 131 (first engagement portion 37d and second engagement portion 37e).

[0062] Figure 11 is a perspective view showing a portion of the cross-sectional configuration of the upper nozzle 11 (lower nozzle 12) and the upper support portion 13 (lower support portion 14). As shown in Figure 11, in this embodiment, the outer shape of the bearing 131 is circular.

[0063] As shown in Figure 10, the bearing stopper 132 has a head portion 132A, a shaft portion 132B, a threaded portion 132C, a first flow path (second flow path in claim 2) 132D, a second flow path (third flow path in claim 2) 132E, and a third flow path (fourth flow path in claim 3) 132F.

[0064] The first channel 132D is in communication with the fourth channel 130D of the shaft 130. The first channel 132D extends from one end (upper end) to the other end (lower end) of the shaft portion 132B and the threaded portion 132C in the direction of extension of the shaft portion 132B and the threaded portion 132C. Rinse water flows into the first channel 132D from the fourth channel 130D.

[0065] The second channel 132E is formed to penetrate both the inside and outside of the shaft portion 132B. The second channel 132E supplies rinse water supplied from the first channel 132D to the outside of the shaft portion 132B. The second channel 132E is provided at a position where the shaft portion 132B and the bearing 131 face each other. That is, the supply port of the second channel 132E is located at a position corresponding to the channel 131B of the bearing 131. The second channel 132E is arranged at predetermined intervals in the circumferential direction of the shaft portion 132B.

[0066] The third channel 132F is formed to penetrate both the inside and outside of the shaft portion 132B. The third channel 132F supplies rinse water supplied from the first channel 132D to the outside of the shaft portion 132B. The third channel 132F supplies rinse water to the space formed between the lower surface of the bearing 131 and the upper surface of the head portion 132A. The third channels 132F are arranged at predetermined intervals in the circumferential direction of the shaft portion 132B.

[0067] Figure 12 is a diagram illustrating the flow of rinse water in the upper nozzle 11 and upper support section 13 according to the second embodiment. As shown in Figures 10 and 12, the rinse water supplied from the first rinse water discharge pipe 22A flows into the first flow path 130A of the shaft 130, passes through the third flow path 130C and the second flow path 130B, and is supplied to the rinse flow path 34 from the supply hole 130G.

[0068] Furthermore, the rinse water flows from the second channel 130B into the fifth channel 130E and is supplied to the fourth channel 130D. This rinse water flows from the fourth channel 130D into the first channel 132D of the bearing stopper 132, passes through the second channel 132E, and flows into the channel 131B of the bearing 131. This rinse water flows through the gap (sliding surface) between the bearing 131 and the first engaging portion 37d and the second engaging portion 37e of the attachment / detachment mechanism 37.

[0069] Furthermore, the rinse water that flows into the first channel 132D of the bearing stopper 132 passes through the third channel 132F and flows between the lower surface of the bearing 131 and the upper surface of the head 132A. This rinse water flows through the gap (sliding portion) between the lower surface of the bearing 131 and the upper surface of the head 132A.

[0070] Figure 13 shows a cross-sectional view of a portion of the lower nozzle 12 and lower support portion 14 according to the second embodiment. As shown in Figure 13, the bearing 142 has a recess 142A and a flow path 142B. The flow path 142B is formed to penetrate the inside and outside of the bearing 142. The flow path 142B is positioned opposite the second flow path 143E of the bearing stopper 143. The flow path 142B allows the rinse water supplied from the second flow path 143E of the bearing stopper 143 to flow to the outside of the bearing 142 (first engagement portion 47d and second engagement portion 47e).

[0071] As shown in Figure 11, the outer shape of the bearing 142 is circular.

[0072] As shown in Figure 13, the bearing stopper 143 has a head portion 143A, a shaft portion 143B, a threaded portion 143C, a first flow path 143D, a second flow path 143E, and a third flow path 143F.

[0073] The first channel 143D is in communication with the first channel 141C of the cap 141. The first channel 143D extends from one end (upper end) to the other end (lower end) of the shaft portion 143B and the threaded portion 143C in the direction of extension of the shaft portion 143B and the threaded portion 143C. Rinse water flows into the first channel 143D from the first channel 141C.

[0074] The second channel 143E is formed to penetrate both the inside and outside of the shaft portion 143B. The second channel 143E supplies rinse water supplied from the first channel 143D to the outside of the shaft portion 143B. The second channel 143E is located where the shaft portion 143B and the bearing 142 face each other. That is, the supply port of the second channel 143E is located at a position corresponding to the channel 142B of the bearing 142. The second channel 143E is arranged at predetermined intervals in the circumferential direction of the shaft portion 143B.

[0075] The third channel 143F is formed to penetrate both the inside and outside of the shaft portion 143B. The third channel 143F supplies rinse water supplied from the first channel 143D to the outside of the shaft portion 143B. The third channel 143F supplies rinse water to the space formed between the upper surface of the bearing 142 and the lower surface of the head 143A. The third channels 143F are arranged at predetermined intervals in the circumferential direction of the shaft portion 143B.

[0076] Figure 14 is a diagram illustrating the flow of rinse water in the lower nozzle 12 and lower support section 14 according to the second embodiment. As shown in Figures 13 and 14, the rinse water supplied from the second rinse water discharge pipe 22B flows into the first flow path 140A of the shaft 140, passes through the third flow path 140C and the second flow path 140B, and is supplied to the rinse flow path 44 from the supply hole 140E.

[0077] Furthermore, the rinse water flows from the second channel 140B into the second channel 141D of the cap 141 and is supplied to the first channel 141C. This rinse water flows from the first channel 141C into the first channel 143D of the bearing stopper 143, passes through the second channel 143E, and flows into the channel 142B of the bearing 142. This rinse water flows through the gap (sliding portion) between the bearing 142 and the first engaging portion 47d and the second engaging portion 47e of the attachment / detachment mechanism 47.

[0078] Furthermore, the rinse water that flows into the first channel 143D of the bearing stopper 143 passes through the third channel 143F and flows between the upper surface of the bearing 142 and the lower surface of the head 143A. This rinse water flows through the gap (sliding portion) between the upper surface of the bearing 142 and the lower surface of the head 143A.

[0079] As described above, in the dishwasher 1 according to this embodiment, the shaft portion 132B (143B) of the bearing stopper 132 (143) has a first channel 132D (143D) into which rinse water flows from the fourth channel 130D (first channel 141C), and a second channel 132E (143E). In this configuration, the rinse water flows through the second channel 132E (143E) between the bearing 131 (142) and the shaft portion 132B (143B) of the bearing stopper 132 (143). Therefore, in the dishwasher 1, the part where the shaft portion 132B (143B) and the bearing 131 (142) slide can be cleaned with rinse water.

[0080] In the dishwasher 1 according to this embodiment, the shaft portion 132B (143B) of the bearing stopper 132 (143) has a third flow path 132F (143F). In this configuration, rinse water is supplied through the third flow path 132F (143E) between the bearing 131 (142) and the head portion 132A (143A) of the bearing stopper 132 (143). Therefore, the dishwasher 1 can clean the area between the bearing 131 (142) and the head portion 132A (143A) of the bearing stopper 132 (143).

[0081] In the dishwasher 1 according to this embodiment, the bearing 131(142) is provided at a position opposite the second flow path 132E(143D) of the shaft portion 132B(143B), and has a flow path 131B(142B) into which rinse water flows from the second flow path 132E(143D), and which supplies rinse water to the portion where the bearing 131(142) and the upper nozzle 11 (lower nozzle 12) engage. In this configuration, the rinse water supplied from the second flow path 132E(143D) flows through the flow path 131B(142B) and is supplied to the outer surface of the bearing 131(142). As a result, the rinse water flows through the portion where the upper nozzle 11 (lower nozzle 12) and the bearing 131(142) engage. As a result, in the dishwasher 1, the engagement portion between the upper nozzle 11 (lower nozzle 12) and the bearing 131 (142) can be cleaned with rinse water.

[0082] In the second embodiment described above, as shown in Figure 11, a configuration in which the outer shape of the bearing 131 (142) is circular was described as an example. However, the outer shape of the bearing 131 (142) may also be square, as shown in Figure 5. In this configuration, sliding of the upper nozzle 11 (lower nozzle 12) against the bearing 131 (141) of the upper support portion 13 (lower support portion 14) is suppressed. Therefore, the bearing 131 (142) does not need to have a flow path 131B (142B).

[0083] [Third Embodiment] Next, the upper nozzle 11 and upper support portion 13, and the lower nozzle 12 and lower support portion 14 according to the third embodiment will be described in detail.

[0084] Figure 15 shows a cross-sectional view of a part of the upper nozzle 11 and upper support portion 13 according to the third embodiment. As shown in Figure 15, the shaft 130 has a first flow path 130A, a second flow path 130B, a third flow path 130C, a fourth flow path 130D, a fifth flow path 130E, a sixth flow path (flow path according to claim 5) 130F, and a supply hole 130G.

[0085] The sixth channel 130F is formed to penetrate both the inside and outside of the shaft 130. The sixth channel 130F supplies rinse water from the first channel 130A to the outside of the shaft 130. The sixth channel 130F is provided in the portion where the shaft 130 and the upper nozzle 11 slide against each other when the upper nozzle 11 rotates. The portion where the shaft 130 and the upper nozzle 11 slide against each other is the portion of the upper nozzle 11 that faces the outer surface of the shaft 130 when the upper nozzle 11 is attached to the shaft 130. This portion is the inner surface portion of the upper nozzle 11 that forms the rinse channel 34 and slides against the outer surface of the shaft 130. This portion is the portion that separates (partitions) the washing channel 32 and the rinse channel 34. The supply port of the sixth channel 130F is positioned to face the inner surface of the above portion of the upper nozzle 11. The sixth channel 130F is arranged at predetermined intervals in the circumferential direction of the shaft 130.

[0086] Figure 16 is a diagram illustrating the flow of rinse water in the upper nozzle 11 and upper support section 13 according to the third embodiment. As shown in Figures 15 and 16, the rinse water supplied from the first rinse water discharge pipe 22A flows into the first flow path 130A of the shaft 130, passes through the third flow path 130C and the second flow path 130B, and is supplied to the rinse flow path 34 from the supply hole 130G.

[0087] Furthermore, the rinse water that flows into the first channel 130A of the shaft 130 passes through the sixth channel 130F and flows through the gap (sliding portion) between the outer surface of the shaft 130 and the inner surface of the upper nozzle 11.

[0088] Figure 17 shows a cross-sectional view of a portion of the lower nozzle 12 and lower support portion 14 according to the third embodiment. As shown in Figure 16, the shaft 140 has a first flow path 140A, a second flow path 140B, a third flow path 140C, a fourth flow path 140D, and a supply hole 140E.

[0089] The fourth channel 140D is formed to penetrate both the inside and outside of the shaft 140. The fourth channel 140D supplies rinse water supplied from the third channel 130C to the outside of the shaft 140. The fourth channel 140D is provided in the part where the shaft 140 and the lower nozzle 12 slide against each other when the lower nozzle 12 rotates. The part where the shaft 140 and the lower nozzle 12 slide against each other is the part of the lower nozzle 12 that faces the outer surface of the shaft 140 when the lower nozzle 12 is attached to the shaft 140. This part is the inner surface of the lower nozzle 12 that forms the rinse channel 44 and slides against the outer surface of the shaft 140. This part is the part that separates (partitions) the washing channel 42 and the rinse channel 44. The supply port of the fourth channel 140D is positioned to face the inner surface of the above part of the lower nozzle 12. The fourth channel 140D is arranged at predetermined intervals in the circumferential direction of the shaft 140.

[0090] Figure 18 is a diagram illustrating the flow of rinse water in the lower nozzle 12 and lower support section 14 according to the third embodiment. As shown in Figures 16 and 17, the rinse water supplied from the second rinse water discharge pipe 22B flows into the first flow path 140A of the shaft 140, passes through the third flow path 140C and the second flow path 140B, and is supplied to the rinse flow path 44 from the supply hole 140E.

[0091] Furthermore, the rinse water that flows into the first channel 140A of the shaft 140 passes through the fourth channel 140D and flows through the gap (sliding portion) between the outer surface of the shaft 140 and the inner surface of the lower nozzle 12.

[0092] As described above, in the dishwasher 1 according to this embodiment, the shaft 130 (140) has a sixth channel 130F (fourth channel 140D) into which rinse water flows from the first channel 130A (140A), and the sixth channel 130F (fourth channel 140D) supplies rinse water to the part where the shaft 130 (140) and the upper nozzle 11 (lower nozzle 12) slide when the upper nozzle 11 (lower nozzle 12) rotates. As a result, in the dishwasher 1, rinse water is supplied to the sliding part from the first channel 130A (140A) via the sixth channel 130F (fourth channel 140D). As a result, in the dishwasher 1, even if oil or food residue gets into the sliding part, the oil or food residue can be removed (washed) by the rinse water. Therefore, in dishwasher 1, a decrease in sliding performance between the upper nozzle 11 (lower nozzle 12) and the shaft 130 (140) can be suppressed. Consequently, wear of the upper support part 13 (lower support part 14) can be suppressed in dishwasher 1.

[0093] [Fourth Embodiment] Next, a fourth embodiment will be described. Figure 19 is a diagram showing a cross-sectional configuration of part of the upper nozzle 11 and upper support portion 13 according to the fourth embodiment. As shown in Figure 19, the shaft 130 has a first flow path 130A, a second flow path 130B, a third flow path 130C, a fourth flow path 130D, a fifth flow path 130E, a sixth flow path 130F, and a supply hole 130G.

[0094] The bearing 131 has a recess 131A and a flow path 131B. The bearing stopper 132 has a head 132A, a shaft portion 132B, a threaded portion 132C, a first flow path 132D, a second flow path 132E, and a third flow path 132F.

[0095] Figure 20 is a diagram illustrating the flow of rinse water in the upper nozzle 11 and upper support portion 13 according to the fourth embodiment. As shown in Figures 19 and 20, the rinse water supplied from the first rinse water discharge pipe 22A flows into the first flow path 130A of the shaft 130, passes through the third flow path 130C and the second flow path 130B, and is supplied to the rinse flow path 34 from the supply hole 130G.

[0096] Furthermore, the rinse water that flows into the first channel 143D of the bearing stopper 143 passes through the third channel 143F and flows between the upper surface of the bearing 142 and the lower surface of the head 143A. This rinse water flows through the gap (sliding portion) between the upper surface of the bearing 142 and the lower surface of the head 143A.

[0097] Furthermore, the rinse water that flows into the first channel 130A of the shaft 130 passes through the sixth channel 130F and flows through the gap (sliding portion) between the outer surface of the shaft 130 and the inner surface of the upper nozzle 11.

[0098] Figure 21 is a diagram showing a cross-sectional configuration of a part of the lower nozzle 12 and lower support portion 14 according to the fourth embodiment. As shown in Figure 21, the shaft 140 has a first flow path 140A, a second flow path 140B, a third flow path 140C, a fourth flow path 140D, and a supply hole 140E.

[0099] The bearing 142 has a recess 142A and a flow path 142B. The bearing stopper 143 has a head 143A, a shaft portion 143B, a threaded portion 143C, a first flow path 143D, a second flow path 143E, and a third flow path 143F.

[0100] Figure 22 is a diagram illustrating the flow of rinse water in the lower nozzle 12 and lower support section 14 according to the fourth embodiment. As shown in Figures 21 and 22, the rinse water supplied from the second rinse water discharge pipe 22B flows into the first flow path 140A of the shaft 140, passes through the third flow path 140C and the second flow path 140B, and is supplied to the rinse flow path 44 from the supply hole 140E.

[0101] Furthermore, the rinse water flows from the second channel 140B into the second channel 141D of the cap 141 and is supplied to the first channel 141C. This rinse water flows from the first channel 141C into the first channel 143D of the bearing stopper 143, passes through the second channel 143E, and flows into the channel 142B of the bearing 142. This rinse water flows through the gap (sliding portion) between the bearing 142 and the first engaging portion 47d and the second engaging portion 47e of the attachment / detachment mechanism 47.

[0102] Furthermore, the rinse water that flows into the first channel 140A of the shaft 140 passes through the fourth channel 140D and flows through the gap (sliding portion) between the outer surface of the shaft 140 and the inner surface of the lower nozzle 12.

[0103] As described above, the dishwasher 1 according to this embodiment can obtain the effects and advantages of the dishwasher 1 according to the first, second, and third embodiments, respectively.

[0104] While embodiments of the present invention have been described above, the present invention is not necessarily limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.

[0105] In the above embodiment, an example was described in which the upper support portion 13 has a shaft 130 having a fifth flow path 130E and a sixth flow path 130F, a bearing 131 having a flow path 131B, and a bearing stopper 132 having a first flow path 132D, a second flow path 132E, and a third flow path 132F. However, the upper support portion 13 only needs to have at least a fifth flow path 130E. Similarly, the lower support portion 14 only needs to have at least a second flow path 141D.

[0106] In the first embodiment described above, in the upper support portion 13, the rinse water flows from the second channel 130B to the fifth channel 130E, is supplied to the fourth channel 130D, flows from the fourth channel 130D through the gap between the threaded portion 132C of the bearing stopper 132 and the threaded portion 130H of the shaft 130, and further flows through the gap between the bearing 131 and the shaft portion 132B of the bearing stopper 132, and flows through the gap (sliding portion) between the lower surface of the bearing 131 and the upper surface of the head 132A of the bearing stopper 132. However, the path through which the rinse water flows from the fifth channel 130E can be any path as long as the rinse water reaches the target part (the gap between the lower surface of the bearing 131 and the upper surface of the head 132A of the bearing stopper 132). The same applies to the lower support portion 14.

[0107] In the above embodiment, the shaft 130 of the upper support portion 13 and the shaft portion 132B of the bearing stopper 132 are described as separate components, with the shaft portion 132B being screwed onto the shaft 130. However, the shaft and the shaft portion may be provided as a single unit. The same applies to the lower support portion 14.

[0108] In the above embodiment, a washing machine in which the door 7 is provided to be movable in the vertical direction was described as an example. However, it can also be applied to dishwashers and the like in which the door is provided on the front side of the washing machine body, such as an oven.

[0109] The present invention may be appropriately combined as described above as embodiments, modifications, and other modifications, without departing from the spirit of the invention. [Explanation of symbols]

[0110] 1…Dishwasher, 3…Washing chamber, 11…Upper nozzle, 12…Lower nozzle, 13…Upper support, 14…Lower support, 130, 140…Shaft, 130A, 140A…First flow path (supply flow path), 130E…Fifth flow path (first flow path), 130F…Sixth flow path (flow path), 131…Bearing, 131B…Flow path (fifth flow path), 132…Bearing stopper, 132A…Head, 132B…Shaft Part, 132D...First flow path (second flow path), 132E...Second flow path (third flow path), 132F...Third flow path (fourth flow path), 140D...Fourth flow path (flow path), 142...Bearing, 142B...Flow path (first flow path) 143... Bearing stopper, 143A... Head, 143B... Shaft, 143D... First channel (second channel), 143E... Second channel (third channel), 143F... Third channel (fourth channel).

Claims

1. A nozzle having a first spray hole for spraying cleaning water and a second spray hole for spraying rinsing water, The nozzle is rotatably supported and a support portion forms part of the flow path for the rinse water leading to the nozzle, The aforementioned support portion is A shaft having a supply hole for supplying the rinse water to the nozzle, and a supply channel for supplying the rinse water to the supply hole, A bearing is provided that is rotatably mounted on the shaft and to which the nozzle is connected, The bearing has a shaft portion that is rotatably mounted on the shaft, A washing machine wherein the shaft has a first channel through which the rinse water flows in from the supply channel, and the first channel supplies the rinse water to the portion where the shaft and the bearing slide when the nozzle rotates.

2. The aforementioned shaft portion is A second channel through which the rinse water flows in from the supply channel, the second channel extending in the direction of the extension of the shaft portion, The washing machine according to claim 1, further comprising: a third channel into which the rinse water flows from the second channel, the third channel supplying the rinse water to the outer surface of the shaft portion facing the bearing.

3. The support portion has a stopper comprising the shaft portion and a head portion provided at the end of the shaft portion, which restricts the movement of the bearing in the extending direction of the shaft portion. A second channel through which the rinse water flows in from the supply channel, the second channel extending in the direction of the extension of the shaft portion, The washing machine according to claim 1, wherein the shaft portion has a fourth channel into which the rinse water flows from the second channel, and the fourth channel supplies the rinse water to the portion in which the bearing and the head slide.

4. The washing machine according to claim 2, wherein the bearing is provided at a position opposite to the third passage of the shaft portion and is a fifth passage into which the rinse water flows from the third passage, and the fifth passage supplies the rinse water to the portion in which the bearing and the nozzle engage.

5. A nozzle having a first spray hole for spraying cleaning water and a second spray hole for spraying rinsing water, The nozzle is rotatably supported and a support portion forms part of the flow path for the rinse water leading to the nozzle, The support portion has a shaft having a supply hole for supplying the rinse water to the nozzle and a supply channel for supplying the rinse water to the supply hole. A washing machine wherein the shaft has a channel through which the rinse water flows in from the supply channel, and the channel supplies the rinse water to the portion where the shaft and the nozzle slide against each other when the nozzle rotates.

Images