JPH11253381A - Attaching structure for cap member in washing nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and easily perform attachment and detachment to/from the open end part of a nozzle pipe, to quickly clean the inside of the nozzle pipe and to sanitarily hold the washing nozzle. SOLUTION: A projection part 27 is projectingly provided from the pipe wall of the open end part 25 of the nozzle pipe 22 to an inner side in upper and lower washing nozzles, a helical groove 30 is formed at a part of the peripheral surface of the insertion part 27 of a cap member 26, and by rotating the cap member 26 in the state of abutting the horizontal groove of the helical groove 30 and the projection part 27, the projection part 27 is guided along the horizontal groove, inclined groove and vertical groove of the helical groove 30. Thus, the cap member 26 is simply and easily attached and detached to/from the open end part 25 of the nozzle pipe 22, the cleaning the inside of the nozzle pipe 22 is quickly performed and the washing nozzles are sanitarily held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a cap member for closing an open end of a nozzle tube constituting a washing nozzle rotatably disposed via a rotating shaft in a washing chamber of a dishwasher. More particularly, the present invention relates to a cap member mounting structure that can be easily and easily attached to and detached from an open end portion of a nozzle tube, and thus can quickly clean the inside of the nozzle tube.

[0002]

2. Description of the Related Art Generally, in a dishwasher, washing water is spouted from washing water jets formed in each washing nozzle while rotating upper and lower washing nozzles rotatably disposed in the washing chamber. The tableware is washed by spraying it on the tableware placed in the kitchen. If such a dish washing operation is performed for a long period of time, the inside of the nozzle tube constituting the washing nozzle is gradually contaminated, and the washing water may become unsanitary, and the dish may not be washed cleanly.

Therefore, in a conventional dishwasher, a cap member is detachably attached to an outer end (an end opposite to a rotating shaft side) of a nozzle tube in a washing nozzle to wash the nozzle tube. In this case, the nozzle tube is cleaned with the cap member removed. Here, a conventional attachment structure of the cap member to the nozzle pipe of the cleaning nozzle will be described with reference to FIGS. FIG. 10 is an explanatory view showing an example of a conventional cap member mounting structure, and FIG. 11 is an explanatory view showing another example of a conventional cap member mounting structure.

First, in FIG. 10, an outer thread portion 102 is formed at an outer end portion 101 of a nozzle tube 100.
Further, an inner screw portion 104 is provided inside the cap member 103.
Are formed. Then, in order to attach the cap member 103 to the outer end portion 101 of the nozzle tube 100, the cap member 103 may be rotated while the inner screw portion 104 is fitted to the outer screw portion 102 of the outer end portion 101. Thereby, the cap member 103 is connected to the outer end 1 of the nozzle tube 100.
01 is fastened and fixed. To remove the cap member 103 from the outer end portion 101, the cap member 103 may be rotated in the opposite direction to release the engagement between the inner screw portion 104 and the outer screw portion 102. As described above, the cap member 103 is detachable from the outer end 101 of the nozzle tube 100. Note that a cleaning water injection port 105 is provided on the rotation shaft side (left side in FIG. 10) of the outer end 101.

[0005] As another example of a conventional cap mounting structure, a cap mounting structure shown in FIG. 11 has been proposed. In FIG. 11, the outer end 1 of the nozzle tube 106
07, two support holes 108 (only one is shown in FIG. 11) are formed.
Both ends 109A of a hook spring 109 having a substantially "U" shape in a plan view are rotatably supported. A bent portion 109B is provided on both sides of the hook spring 109, and each bent portion 109B is provided at the outer end 10 of the nozzle tube 106.
7 generates a spring force in the opposite direction. In addition, the cap member 110 has an insertion portion 11 that is inserted into the inside of the outer end portion 107.
1 and a head portion 112 outside the insertion portion 111.
The cap member 1 is provided at two places around the head 112.
When the hook 10 is attached to the outer end 107, the hook spring 10
9 is provided with a fitting groove 113 to be fitted therein. In addition, on the rotation shaft side (left side in FIG. 11) with respect to the outer end 107,
A washing water injection port 114 is provided.

In order to attach the cap member 110 to the outer end 107 of the nozzle tube 106, the insertion portion 111 of the cap member 110 is inserted into the outer end 107 along the arrow direction A, and then the hook spring The hook 109 may be fitted in the fitting groove 113 by rotating the hook 109 in the arrow direction B. In this state, the cap member 110 is
9, based on the spring force of the bent portion 109B formed in
It is pressed in the direction of arrow A and fixed to the outer end 107. On the other hand, in order to remove the cap member 110 from the outer end 107, the hook 109
Is rotated. Thereby, the cap member 110 can be moved in the direction opposite to the arrow direction A, and can be easily removed from the outer end 107. Thus, the cap member 110 is detachable from the outer end 107 of the nozzle tube 106.

[0007]

However, FIG.
In the cap mounting structure shown in FIG. 7, the cap member 103 is attached and detached in a screw-in manner by the outer thread portion 102 of the outer end portion 101 and the inner thread portion 104 of the cap member 103. Is generally complicated and time-consuming. Further, since the inside of the nozzle tube 100 is filled with high-temperature washing water, it is conceivable that the outer screw portion 102 and the inner screw portion 104 cannot be fitted due to thermal expansion or the like. Once the cap member 103 is removed, there is a possibility that the cap member 103 cannot be attached to the outer end portion 101 again. Thus, the cap member 1
If there is an inconvenience in the attachment / detachment work of the nozzle 03, the cleaning work of the nozzle tube 100 tends to be neglected, and the washing nozzle becomes unsanitary and the washing power of tableware is reduced.

Further, in the cap mounting structure shown in FIG. 11, the cap member 110 can be detached from the outer end 107 by rotating the hook spring 109. Although the time for attaching and detaching work is slightly reduced, a gap 115 is formed between the periphery of the outer end 107 and the hook spring 109, and the gap 115 has a residue attached to dirty tableware. There is a problem that greens and the like enter. Thus, the gap 11
If garbage and the like are contained in 5 and clogged, it becomes extremely unsanitary and is not preferable as a dishwasher. Further, in the cap mounting structure of FIG. 11, since the hook spring 109 protrudes outside the cap member 110 due to the structure, there is a problem that the protruding portions are clogged with the protruding portion as described above. It is very unsanitary and is not preferred as a dishwasher.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can be easily and easily attached to and detached from an open end of a nozzle tube, so that the inside of the nozzle tube can be quickly cleaned. It is an object of the present invention to provide a mounting structure of a cap member capable of maintaining the washing nozzle in a sanitary manner.

[0010]

In order to achieve the above object, a mounting structure of a cap member in a cleaning nozzle according to the present invention extends radially from a rotating shaft provided in a cleaning chamber and includes a rotating shaft. A cleaning nozzle rotatable in the cleaning chamber via a rotating shaft portion, the cleaning nozzle having a nozzle pipe having an end opposite to the open end, and a cap member attached to the open end of the cleaning nozzle. In the mounting structure of the cap member in the washing nozzle, the protrusion formed from the pipe wall of the open end toward the inside of the nozzle tube, and the cap member are formed and inserted into the open end. An insertion portion and a spiral groove formed in the insertion portion and guiding the protrusion when the cap member is rotated are provided.

In the above cap member mounting structure, in order to mount the cap member on the open end of the nozzle tube of the cleaning nozzle, the insertion portion of the cap member is inserted into the open end and the pipe wall of the open end is provided. The cap member is rotated in a state where it is aligned with the projecting portion projecting inward from and the spiral groove formed in the insertion portion. At this time,
As the cap member rotates, the protrusion is guided along the spiral groove, and the cap member is attached to the open end of the nozzle tube. When the cap member is removed from the open end, the cap member rotates in the opposite direction to the above case. At this time, the protrusion is guided in the reverse direction along the spiral groove according to the reverse rotation of the cap member, and the cap member is removed from the open end of the nozzle tube.

As described above, the cap member is slightly rotated in the predetermined direction or the opposite direction in a state where the spiral groove of the cap member is aligned with the projection of the nozzle tube, so that the cap member is opened at the open end of the nozzle tube. The nozzle can be easily and easily attached to and detached from the portion, so that the inside of the nozzle tube can be quickly cleaned and the cleaning nozzle can be held in a sanitary manner.

[0013] The mounting structure of the cap member in the cleaning nozzle according to the present invention is arranged so that the cap member extends radially from a rotating shaft provided in the cleaning chamber, and an end opposite to the rotating shaft is an open end. A cleaning nozzle having a nozzle tube, the cleaning nozzle being rotatable in the cleaning chamber via a rotating shaft, and a cap member mounted on an open end of the cleaning nozzle. ,
A helical groove formed inside the tube wall of the open end, an insertion portion formed in the cap member, which is inserted into the open end, and which is formed to project outward from the insertion portion. ,
And a protrusion guided by the spiral groove.

In this cap member mounting structure, a spiral groove inside the tube wall at the open end of the nozzle tube is formed, and a protruding portion is formed outward from the insertion portion of the cap member. The operation of attaching and detaching the cap member to and from the open end is the same as the cap member mounting structure described above. That is, in order to attach the cap member to the open end of the nozzle tube in the cleaning nozzle, the insertion portion of the cap member is inserted into the open end, and a protrusion formed to project outward from the insertion portion. The cap member is rotated while being aligned with the spiral groove formed inside the tube wall at the open end. At this time, the protrusion is guided along the spiral groove according to the rotation of the cap member, and the cap member is attached to the open end of the nozzle tube. When the cap member is removed from the open end, the cap member rotates in the opposite direction to the above case. At this time, the protrusion is guided in the reverse direction along the spiral groove according to the reverse rotation of the cap member, and the cap member is removed from the open end of the nozzle tube.

As described above, the cap member is slightly rotated in the predetermined direction or the opposite direction in a state where the spiral groove at the open end is aligned with the protrusion of the nozzle tube, so that the cap member is opened. The nozzle can be easily and easily attached to and detached from the end, so that the inside of the nozzle tube can be quickly cleaned and the cleaning nozzle can be held in a sanitary manner.

Here, in the mounting structure of each of the cap members, a head formed at an outer end of the insertion portion and having a diameter larger than that of the insertion portion is provided when the cap member is rotated. And a ring member interposed between the open end and the head. As described above, when the ring member is interposed between the open end of the nozzle tube and the head of the cap member, the washing water leaks from the nozzle tube, and the cap member is placed on the open end. Loosening can be prevented.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cap member mounting structure according to an embodiment of the present invention; First, the mounting structure according to the first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of a main part of a dishwasher cut away, FIG. 2 is a plan view of a cleaning nozzle according to the first embodiment, FIG. 3 is a side view of the cleaning nozzle, and FIG. FIG. 5 is an explanatory view showing a state where a cap member is attached to the open end of the nozzle tube, and FIG. 6 is an explanatory view showing the open end side of the nozzle tube.

First, the structure of a dishwasher to which the mounting structure of the first embodiment is applied will be described with reference to FIG. In FIG. 1, a dishwasher 1 is supported on the floor by four legs 2 and has a washing tank 3 at an upper portion thereof, and a dishwasher main body 4 and an upright portion on the back (right side in FIG. And a box-shaped opening / closing door 6 attached so as to be vertically movable by a predetermined amount via the guide plate 5 provided. The opening and closing door 6 is opened and closed by an opening and closing device A described later.
At the time of the closing, the washing chamber R is formed by covering the washing tank 3, and at the time of opening, the table rack (not shown) on which the tableware is placed is moved in and out of the washing chamber R.

An opening / closing device A for the opening / closing door 6 is provided at the back of the main body 4 of the washing machine. The opening / closing device A can swing vertically by a pair of brackets 7 fixed to the guide plate 5. An attached U-shaped arm 8, a link 10 for connecting each end of the arm 8 to the inner wall of the opening / closing door 6 via a bracket 9 so as to be position-adjustable, and integrally provided on base portions on both sides of the arm 8. And a pair of tension coil springs 12 extending between the pair of locking pieces 11 and the locking pieces (not shown) provided on the washing machine main body 4 to apply upward power to the arm 8. Be composed. The opening / closing device A is provided with an electromagnetic opening lock device (not shown) on the back surface of the guide plate 5. When the opening / closing door 6 is closed, the opening / closing door 6 is lowered by the U-shaped handle 13 to open the electromagnetic opening. The door 6 is held closed by being fixed to the locking device, and when the door 6 is opened, the lock of the electromagnetic opening locking device is electrically released, so that the opening and closing doors 6 It is automatically opened via the spring force. The opening / closing device A for the opening / closing door 6 is described in Japanese Utility Model Laid-Open No. 2-116261.
Since it has the same configuration as that described in Japanese Patent Laid-Open Publication No. H10-209, a detailed description thereof is omitted here.

In the cleaning room R, the main body 4 of the cleaning machine is provided.
A washing water supply pipe 14 connected to a washing water pump (not shown) for pumping washing water from a washing water tank (not shown) provided therein is provided.
The upper cleaning nozzle 1 is located at the upper position and
5. The upper rinsing nozzle 16, the lower cleaning nozzle 18, and the lower rinsing nozzle 17 are rotatably mounted.

Here, a rinsing water supply pipe (not shown) is provided inside the cleaning water supply pipe 14, and a rinsing water tank (not shown) provided in the main body 4 of the washing machine. Rinsing water is supplied to the rinsing water supply pipe via a rinsing pump (not shown). The rinsing water thus supplied is supplied to the upper rinsing nozzle 16 and the lower rinsing nozzle 1.
8. The configuration of the rinsing water supply pipe, the rinsing tank, and the rinsing pump is the same as the configuration described in Japanese Utility Model Laid-Open No. 4-80471.
The detailed description thereof will be omitted by referring to the publication.

Next, the upper cleaning nozzle 15 and the lower cleaning nozzle 1
8 and a cap member mounting structure applied thereto will be described with reference to FIGS. Here, the upper cleaning nozzle 15 and the lower cleaning nozzle 18 have the same configuration, and therefore, the upper cleaning nozzle 15 and its cap mounting structure will be described here.

The upper cleaning nozzle 15 has a support 20, which is rotatably mounted on a rotating shaft 21 mounted on the lower end of the cleaning water supply pipe 14. Three nozzle tubes 22 extend radially from the support portion 20 at an equal angle. Each nozzle tube 22 has
Five bulging portions 23 are formed at positions slightly deviated from the center line, and each bulging portion 23 is provided with a washing water injection port 24. Here, each bulging portion 23 is
Of the washing water ejected from each washing water ejection port 24 when the upper washing nozzle 15 is rotated via the rotating shaft portion 21 when washing the dishes. This is to generate a horizontal component force equal to or greater than a predetermined value based on The end of each nozzle tube 22 on the opposite side away from the rotating shaft 21 (support 20) is formed at an open end 25 (see FIG. 5), and the open end 25 is provided with a cap member 26. Is attached.

Here, a mounting structure for detachably attaching the cap member 26 to the open end 25 of each nozzle tube 22 in the upper cleaning nozzle 15 will be described with reference to FIGS. As shown in FIG. 5, the end of the nozzle tube 22 is an open end 25, and a position near the open end 25 (a position slightly deviated from the open end 25 toward the support portion 20). A projection 27 is formed to project inward from the tube wall of the nozzle tube 22 (see FIG. 6).

A cap member 26 attached to the open end 25 of the nozzle tube 22 has a hollow insert 28 inserted into the open end 25 and an outer end of the insert 28. A head 29 which is formed and has a larger diameter than the insertion portion 28 is integrally provided. A spiral groove 30 is formed in a part of the peripheral surface of the insertion portion 28, and the spiral groove 3 is formed.
When the cap member 26 is rotated as described later, the protrusion 27 is guided along the spiral groove 30.

As shown in FIG. 4, the helical groove 30 is formed in a horizontal groove 31 which coincides with the axial direction of the nozzle tube 22 and is formed continuously with the horizontal groove 31 by a predetermined angle (for example, 8).
It is composed of an inclined groove 32 inclined about 0 °) and a vertical groove 33 formed continuously with the inclined groove 32 and substantially perpendicular to the horizontal groove 31.

In addition, between the insertion portion 28 and the head 29,
A ring groove 34 is formed, and an O-ring 35 is mounted in the ring groove 34. This O-ring 35
Improves the adhesion between the insertion portion 28 of the cap member 26 and the open end 25 of the nozzle tube 22. When the O-ring 35 is mounted in the ring groove 34, the insertion portion 2
8 can be prevented from loosening from the open end portion 25, whereby the washing water can be prevented from leaking from the nozzle tube 22. Further, on the outer periphery of the head 29, three gripping projections 3
The cap member 26 can be smoothly rotated by the grip projection 36.

The cap member 26 according to the first embodiment
In the mounting structure shown in FIG.
In order to attach to the open end 25 of the spiral groove 30, the horizontal groove 31 of the spiral groove 30 and the protrusion 27 near the open end 25 are aligned so that the protrusion 27 enters the horizontal groove 31.
The insertion portion 28 is inserted into the open end 25. At this time, the protrusion 27 is guided by the horizontal groove 31 while the horizontal groove 3 in FIG.
Move to the right end of 1. When the cap member 26 is rotated in this state along the arrow direction C (see FIG. 5), the protrusion 2
7 is guided to the lower end of the vertical groove 33 through the inclined groove 32. Thereby, the cap member 26 is moved to the open end 25.
From the nozzle tube 22 and attached to the open end 25 of the nozzle tube 22.

At this time, the rotation amount of the cap member 26 is
As is apparent from the shape of the spiral groove 30 shown in FIG. 4, the rotation is about 1/4 turn, and thus the cap member 26 can be attached to the open end 25 by slightly rotating the cap member 26. Further, since the O-ring 35 is mounted in the ring groove 34, the airtightness between the cap member 26 and the open end 25 is well maintained, so that the insertion portion 28 is loosened from the open end 25. The washing water does not leak from the nozzle tube 22.

When the cap member 26 is to be removed from the open end 25, the operation reverse to that described above may be performed. That is, the cap member 26 is rotated about 1/4 turn in a direction opposite to the arrow direction C. At this time, the projection 27 of the open end 25 is first guided from the lower end to the upper end of the vertical groove 33 of the spiral groove 30 in FIG. Thereby, the cap member 2
6 is drawn out of the nozzle tube 22. Thereafter, the cap member 26 is moved in a direction in which the insertion portion 28 is separated from the open end portion 25, so that the cap member 2
6 is removed from the open end 25.

As described above, in the mounting structure of the cap member 26 according to the first embodiment, the upper and lower cleaning nozzles 15, 1
8, a projecting portion 27 is formed to project inward from the tube wall of the open end portion 25 of the nozzle tube 22, and a spiral groove 30 is formed on a part of the peripheral surface of the insertion portion 27 of the cap member 26; By rotating the cap member 26 in a state where the horizontal groove 31 of the spiral groove 30 and the projecting portion 27 are aligned, the projecting portion 27 is rotated by the horizontal groove 31 of the spiral groove 30 and the inclined groove 3.
2. Because it is configured to guide along the vertical groove 33,
The cap member 26 can be easily and easily attached to and detached from the open end 25 of the nozzle tube 22. This allows
The inside of the nozzle tube 22 can be quickly cleaned, and the cleaning nozzles 15 and 18 can be held in a sanitary manner.

Further, the spiral groove 30 is provided in the cap member 26.
Therefore, when the cap member 26 is attached to and detached from the open end 25 of the nozzle tube 22, the cap member 26 is not formed.
All that is required is to perform a simple operation of rotating about 1/4 turn. Thus, the attaching and detaching operation of the cap member 26 can be remarkably simplified as compared with the conventional screw-in type. Further, a ring groove 34 is formed between the insertion portion 28 and the head 29 of the cap member 26, and an O-ring 35 is mounted in the ring groove 34. Thus, it is possible to prevent the washing water from leaking from the nozzle tube 22 without fail.

Further, since the insertion portion 28 of the cap member 26 is formed in a hollow shape, the water pressure of the washing water filled in the nozzle tube 22 is applied from the inside of the insertion portion 28 to the outside. It is possible to prevent the cap member 26 from coming off the open end 25. Further, in a state where the cap member 26 is attached to the open end 25 of the nozzle tube 22, the head 29 does not protrude outward as compared with the conventional hook spring system,
No residual vegetables are caught or clogged on the head 29, and the nozzle tube 22 can be held in a sanitary manner.

In the first embodiment, the washing water injection port 24 formed in the nozzle tube 22 and the cap member 26 are formed.
When there is a risk that the insertion portion 28 may affect the washing water jetted from the washing water jet port 24 in the vicinity of the insertion portion 28, as shown in FIG. A hole 37 for allowing the washing water to escape may be provided.

Next, a cap member mounting structure according to a second embodiment will be described with reference to FIG. FIG. 8 is an explanatory view showing a cap member mounting structure according to the second embodiment. Here, the mounting structure of the second embodiment basically has the same configuration as the mounting structure of the first embodiment,
The point that the forming member of the projecting portion and the spiral groove is opposite to that of the first embodiment, that is, the spiral groove is formed inside the tube wall at the open end of the nozzle tube, and the insertion portion of the cap member is inserted. The only difference from the first embodiment is that a protrusion is formed outward from. Therefore, in the following description, the same members and elements as those in the first embodiment will be denoted by the same reference numerals, and only the configuration unique to the second embodiment will be described.

In FIG. 8, a spiral groove 30 formed in the insertion portion 28 of the cap member 26 in the first embodiment is formed inside the nozzle wall near the open end 25 of the nozzle tube 22. ing. The spiral groove 30 includes a horizontal groove 31 that matches the axial direction of the nozzle tube 22, an inclined groove 32 formed continuously with the horizontal groove 31 and inclined at a predetermined angle (for example, about 80 °), and an inclined groove 32. It has a vertical groove 33 formed continuously and perpendicular to the horizontal groove 31. Further, a projection 27 protruding outward from the surface of the insertion part 28 is formed on the insertion part 28 of the cap member 26.

The cap member 26 according to the second embodiment
In the mounting structure shown in FIG.
The spiral groove 30 formed inside the pipe wall of the nozzle pipe 22 near the open end 25 is attached to the open end 25 of the nozzle pipe 22.
Of the horizontal groove 31 and the protrusion 27 formed in the insertion portion 28 of the cap member 26, the protrusion 27
The insertion portion 28 is inserted into the open end portion 25 so as to be inserted. At this time, the protruding portion 27 is guided by the horizontal groove 31 as in the first embodiment, while the horizontal groove 31 in FIG.
Move to the left edge of. When the cap member 26 is rotated in a predetermined direction in this state, the protrusion 27 is guided to the lower end of the vertical groove 33 through the inclined groove 32. As a result, the cap member 26 is drawn into the nozzle tube 22 from the open end 25 and is attached to the open end 25 of the nozzle tube 22.

At this time, the rotation amount of the cap member 26 is
As is apparent from the shape of the spiral groove 30 shown in FIG. 8, the rotation is about 1/4 turn, and thus the cap member 26 can be attached to the open end 25 by slightly rotating the cap member 26.

When the cap member 26 is to be removed from the open end 25, an operation reverse to that described above may be performed. That is, the cap member 26 is rotated about 1/4 turn in a direction opposite to the predetermined direction. At this time, the open end 25
The projection 27 is first guided from the lower end to the upper end of the vertical groove 33 of the spiral groove 30 in FIG.
You will be guided to the upper end. Thereby, the cap member 26
Is drawn out of the nozzle tube 22. Thereafter, the cap member 26 is moved in a direction in which the insertion portion 28 is separated from the open end portion 25, so that the cap member 26
Is removed from the open end 25.

The cap member 26 according to the second embodiment
With the mounting structure described above, the same effect as that obtained by the first embodiment can be obtained.

In the mounting structure of the second embodiment, as shown in FIG. 9, the head 29 of the cap member 26 is formed to be slightly longer, and the spray nozzle 38 is mounted on the head 29. Is also good. In such a case, when washing dishes, washing water can also be sprayed onto the dishes from the spray nozzle 38 attached to the head 29 of the cap member 26.

It should be noted that the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. For example, in the mounting structure of the cap member 26 according to the first embodiment, the insertion portion 28 of the cap member 26 is formed in a hollow cylindrical shape, but as the insertion portion 28 moves away from the head 29, the tapered conical shape is formed. May be configured. In such a case, the insertion portion 2
8 can be easily inserted into the open end 25. Further, the insertion portion 28 of the cap member 26 does not need to be formed in a hollow shape, and may be a rod shape.

[0043]

As described above, the present invention can be easily and easily attached to and detached from the open end of the nozzle tube, thereby enabling quick cleaning of the inside of the nozzle tube, thereby making the cleaning nozzle sanitary. A mounting structure for a cap member that can be held can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a dishwasher with a part cut away.

FIG. 2 is a plan view of the cleaning nozzle according to the first embodiment.

FIG. 3 is a side view of a cleaning nozzle.

FIG. 4 is a side view of the cap member.

FIG. 5 is an explanatory view showing a state where a cap member is attached to an open end of the nozzle tube.

FIG. 6 is an explanatory view showing an open end side of a nozzle tube.

FIG. 7 is a side view showing a modified example of the cap member in the first embodiment.

FIG. 8 is an explanatory diagram illustrating a cap member mounting structure according to a second embodiment.

FIG. 9 is an explanatory view showing a modification of the cap member according to the second embodiment.

FIG. 10 is an explanatory view showing an example of a conventional mounting structure of a cap member.

FIG. 11 is an explanatory view showing another example of a conventional cap member mounting structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... dishwasher, 3 ... washing tank, 4 ... washing machine main body, 6 ... opening / closing door 15 ... upper washing nozzle, 18
... lower washing nozzle, 20 ... support part, 21 ... rotating shaft part, 22 ... nozzle tube, 23 ... swelling part, 24
... Washing water injection port, 25 ... Open end, 26 ...
Cap member, 27 projecting portion, 28 fitting portion,
29 ... head, 30 ... spiral groove, 31 ... horizontal groove, 32 ... inclined groove, 33 ... vertical groove, 34 ...
Ring groove 35: O-ring, R: Cleaning chamber

Claims (3)

[Claims] 1. A nozzle tube extending radially from a rotating shaft portion provided in a cleaning chamber and having an open end at an end opposite to the rotating shaft portion. A cleaning nozzle rotatable in the cleaning chamber, and a cap member attached to the cleaning nozzle, the cap member being attached to an open end of the cleaning nozzle. A protrusion formed to project toward the front end; an insertion portion formed on the cap member, which is inserted into the open end; and a projection formed on the insertion portion, the protrusion being formed when the cap member is rotated. And a spiral groove for guiding the cap member in the cleaning nozzle. 2. A nozzle tube extending radially from a rotating shaft portion provided in the cleaning chamber and having an open end at the end opposite to the rotating shaft portion. A washing nozzle rotatable in the washing chamber, and a cap member attached to the washing nozzle having a cap member attached to the open end of the washing nozzle, wherein a spiral formed inside the tube wall of the open end. A groove formed in the cap member, the insertion part being inserted into the open end, and a projection formed to project outward from the insertion part and guided by the spiral groove. A mounting structure for a cap member in a cleaning nozzle. 3. A head formed at an outer end of the insertion portion and having a diameter larger than that of the insertion portion, and between the open end and the head when the cap member is rotated. 3. A mounting structure for a cap member in a cleaning nozzle according to claim 1, further comprising a ring member interposed in the cleaning nozzle.