JP2012117314A - Private part washing device - Google Patents

Abstract

To reduce the number of parts.
A local cleaning device includes a housing having a housing chamber having a front end opened as an advance / retreat port, a storage position accommodated in the storage chamber, and a water discharge port from the advance / retreat port to the storage chamber. A nozzle 30 that can move forward and backward with respect to the cleaning position that advances forward, and a cap 40 that can be attached to and detached from the fitting recess 35 of the nozzle 30. The cap 40 is formed along the outer peripheral edge of the main body 41 and the main body 41 that covers the front end surface of the nozzle 30 in a state where the cap 40 is mounted in the fitting concave 35. A flange portion 43 that closes the gap between the outer peripheral edge of the front end of the nozzle 30 and the opening edge of the advance / retreat port 15 in a state where the nozzle 30 is retracted to the storage position is provided.
[Selection] Figure 1

Description

  The present invention relates to a local cleaning apparatus.

  In Patent Document 1, a housing having a housing chamber whose front end is opened as an advance / retreat port, a position accommodated in the accommodation chamber, and a position where the water discharge port is advanced from the advance / retreat port to the front of the accommodation chamber. There is disclosed a local cleaning device including a nozzle provided to enable the above. In this local cleaning device, a clearance is provided between the inner surface of the storage chamber and the outer surface of the nozzle in order to facilitate the forward and backward movement of the nozzle between the outer surface of the nozzle and the inner surface of the storage chamber. . When the clearance is provided in the storage chamber in this manner, there is a concern that sewage or filth may enter the storage chamber from the advance / retreat port in a state where the nozzle is stored in the storage chamber.

  In view of this, the local cleaning device disclosed in Patent Document 1 employs a structure in which the advancing / retreating opening is closed using a shutter as means for preventing filth and filthy water from entering the housing chamber. The shutter is supported so as to be displaceable between a closed position for closing the advance / retreat opening and an open position for opening the advance / retreat opening, and when the nozzle advances forward, the shutter is pushed by the nozzle to move from the closed position. Displace to open position. When the nozzle is accommodated in the accommodation chamber, the shutter is returned from the open position to the closed position by the elasticity of the return spring.

JP 2010-196375 A

In addition to the shutter, the shutter structure described in Patent Document 1 requires a pair of left and right shaft members for supporting the shutter on the opening edge of the opening and a pair of left and right biasing springs. There is a problem that there are many.
The present invention has been completed based on the above-described circumstances, and an object thereof is to reduce the number of parts.

  As means for achieving the above object, the invention of claim 1 includes a housing having a housing chamber whose front end is opened as an advancement / retraction opening, a water discharge port for discharging cleaning water, and at least forming the water discharge port. A nozzle provided so as to be able to advance and retreat between a storage position where the region is accommodated in the accommodation chamber and a cleaning position where the water outlet is advanced from the advancement / retraction opening to the front of the accommodation chamber; A cap that is attachable to and detachable from the fitting portion formed at a position in front of the water mouth, and the cap moves the front end surface of the nozzle forward in a state where the cap is attached to the fitting portion. A main body part that covers from the outer peripheral edge of the main body part, the front end outer peripheral edge of the nozzle and the forward / backward movement of the nozzle with the cap attached to the fitting part and the nozzle retracted to the storage position. Characterized in place being constituted by a flange portion which closes the gap between the opening edge of the.

  According to a second aspect of the present invention, in the first aspect of the present invention, in the state where the cap is attached to the fitting portion and the nozzle is retracted to the retracted position, the outer peripheral edge of the front surface of the flange portion is the housing. It is characterized in that it is configured so as to be substantially flush with the front surface.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the outer peripheral edge portion of the rear surface of the flange portion and the opening edge portion of the forward / backward opening of the front surface of the housing may be moved forward and backward. It is characterized in that tapered surfaces that are inclined with respect to the direction and can be brought into close contact with each other are formed.

<Invention of Claim 1>
When the cap is attached to the fitting portion and the nozzle is retracted to the retracted position, the front end surface of the nozzle is covered with the main body portion, and the flange portion between the front edge of the front end of the nozzle and the opening edge of the advance / retreat port Since the gap is closed, it is possible to reliably prevent entry of filth into the accommodation chamber. In addition, when the cap becomes dirty, the cap can be removed from the fitting portion and cleaned, so that the hygienic state can be kept good. According to the present invention, it is possible to prevent entry of filth into the accommodation chamber simply by attaching a cap to the nozzle, and therefore the number of components can be reduced.

<Invention of Claim 2>
When the cap is mounted on the fitting portion and the nozzle is retracted to the retracted position, the outer peripheral edge of the flange portion is substantially flush with the front surface of the housing, so the outer peripheral edge on the front surface of the flange portion and the front surface of the housing Narrow recesses in which dirt is likely to remain do not occur between the two. Therefore, the outer peripheral edge of the flange portion and its vicinity can be kept clean by cleaning without removing the cap from the nozzle.

<Invention of Claim 3>
Even if a position shift in the advancing / retreating direction or a position shifting in a direction crossing the advancing / retreating direction occurs in the process of moving the nozzle back to the storage position, the taper surface of the flange portion and the taper of the housing immediately before reaching the storage position. The nozzle position shift is corrected by the surface, and both tapered surfaces are in close contact with each other over the entire circumference.

Sectional drawing showing the state which the nozzle retracted | retreated to the storing position in Embodiment 1 Sectional drawing showing the state where the nozzle is located between the storage position and the cleaning position Front view showing the housing opening and retreating opening and cap viewed in parallel with the nozzle retreating direction Front view of the nozzle with the cap removed and the cap removed from the housing, viewed parallel to the nozzle's advance / retreat direction Back view of cap Sectional drawing showing the state which cut | disconnected the nozzle at right angles to the length direction in Embodiment 2 Back view of cap

<Embodiment 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. The local cleaning apparatus according to the present embodiment is provided at the rear end of a western-style toilet body (not shown), and includes a synthetic resin housing 10, a pair of left and right nozzles 30 made of synthetic resin, and a synthetic resin cap 40. And. The housing 10 includes a base plate 11 that is fixed to the toilet body, and a cover 12 that covers the upper surface of the base plate 11 to form a storage chamber 13. An advance / retreat guide 20 is provided in the storage chamber 13. Yes.

  The base plate 11 is formed with a front plate portion 14 that rises upward from its front edge. The front plate portion 14 has a flat plate shape, and the front surface of the front plate portion 14 is inclined so as to face obliquely downward and forward, that is, to face the inside of a toilet bowl (not shown). The inclined plate surface (front surface) of the front plate portion 14 is perpendicular to the forward / backward direction of the nozzle 30. The front plate portion 14 is formed with a pair of left and right penetrating advance / retreat ports 15 so as to open to the front surface of the housing 10. The pair of advancing / retreating ports 15 have the same shape and size, and the opening shape is non-circular. As shown in FIGS. 3 and 4, the advancing / retreating port 15 includes a first opening region 15A having a shape obtained by removing a pair of vertically symmetrical arcuate portions with a horizontal string as a boundary in a perfect circle, and a lower portion of the first opening region 15A. A horizontally-long rectangular second opening region 15B that extends along the side string and extends over the entire width of the lower string is configured to communicate with each other.

  As shown in FIGS. 1, 2, and 4, the front edge of the front side of the housing 10 (front plate portion 14) has a front side tapered surface 18 that is inclined with respect to the front surface of the front plate portion 14. The taper surface on the housing side which is a constituent element of the invention is continuously formed over the entire region (the entire circumference) of the opening edge of the advance / retreat port 15. The front side taper surface 18 is inclined with respect to the advancing / retreating direction of the nozzle 30. The formation region of the front side taper surface 18 in the plate thickness direction (front-rear direction) of the front plate portion 14 extends over a range approximately half of the front side. In the thickness direction of the front plate portion 14, the opening area of the advance / retreat port 15 is maximized at the front end of the front side taper surface 18 (the front surface of the front plate portion 14), and toward the rear end of the front side taper surface 18. The opening area is gradually reduced.

  As shown in FIG. 4, the advance / retreat guide 20 has a pair of left and right elongated guide holes 21 inside thereof. As shown in FIGS. 1 and 2, the guide hole 21 is inclined so as to have a downward slope toward the front. The front end of the advance / retreat guide 20 is located slightly behind the front plate portion 14 of the housing 10, and the front end of the guide hole 21 is opened to correspond to the advance / retreat port 15 in the vicinity of the front plate portion 14. As shown in FIG. 4, the opening shape of the guide hole 21 is substantially the same as that of the advance / retreat port 15, and the opening area of the guide hole 21 is slightly smaller than the advance / retreat port 15. That is, the opening at the front end of the guide hole 21 is substantially similar to the advance / retreat port 15. The length direction of the guide hole 21 (that is, the forward / backward direction of the nozzle 30) is a direction perpendicular to the plate surface (front surface) of the front plate portion 14 of the housing 10. In the pair of guide holes 21, a pair of nozzles 30 that are driven forward and backward independently of each other are provided.

  As shown in FIGS. 1, 2, and 4, the nozzle 30 includes a synthetic resin cylindrical main body 31 whose front end is opened, and a synthetic resin closing member 34 fixed to the opening of the front end of the cylindrical main body 31. And has an elongated cylindrical shape whose front end is closed as a whole. As shown in FIGS. 1 and 2, a spout 32 that opens at a position slightly rearward of the front end of the nozzle 30 is formed on the upper surface of the cylindrical main body 31. Wash water is discharged upward from the water discharge port 32. As shown in FIGS. 2 and 4, a rack 33 is formed on the lower surface of the cylindrical main body 31. The nozzle 30 is attached to the guide hole 21 in a state where the rack 33 is engaged with a pinion of a drive mechanism (not shown), and the storage position (see FIG. 1) and cleaning are performed by the guide of the drive mechanism and the guide hole 21. It moves forward and backward (reciprocating) in parallel with the length direction of the nozzle 30 and the nozzle 30 between the positions.

  As shown in FIG. 4, the front shape perpendicular to the length direction of the portion of the cylindrical main body 31 excluding the rack 33 is substantially the same as the first opening region 15 </ b> A of the advance / retreat port 15, and the front shape is It is slightly smaller than the first opening region 15A. Further, the front shape of the rack 33 is a square corresponding to the second opening region 15B of the advance / retreat opening 15 and is slightly smaller than the second opening region 15B. Thus, the front shape of the nozzle 30 including the rack 33 corresponds to the entire opening area of the advance / retreat port 15.

  As shown in FIGS. 1, 2, and 4, the closing member 34 is fixed so as to block the opening at the front end of the cylindrical main body 31 in a liquid-tight manner. The front surface of the closing member 34 and the front end surface of the cylindrical main body 31 are continuous with each other. The closing member 34 is formed with a fitting recess 35 (a fitting portion which is a constituent feature of the present invention) having a concave front surface. As shown in FIG. 4, the fitting recess 35 has a non-circular shape in which the upper end side portion of a perfect circle is cut out in a bow shape.

  As shown in FIG. 1, in a state where the nozzle 30 is in the retracted position, the entire nozzle 30 is accommodated in the guide hole 21, and the front end of the nozzle 30 is located behind the rear surface of the front plate portion 14. In a state where the nozzle 30 has advanced to the cleaning position (position where the nozzle 30 has further advanced obliquely downward and forward from the state shown in FIG. 2), at least the front end portion including the water discharge port 32 of the nozzle 30 penetrates the advance / retreat port 15 and the housing. The water discharge port 32 is located inside the toilet bowl and discharges wash water obliquely forward and upward. FIG. 2 shows a state in which the nozzle 30 is located slightly behind (the storage position side) from the cleaning position.

  The cap 40 is molded as a single component made of synthetic resin, and as shown in FIGS. 1 to 3 and 5, the main body portion 41, the fitting convex portion 42, the flange portion 43, and the rear side taper surface 44 are integrally formed. It has a form. The main body 41 has the same shape as the first opening region 15A of the advance / retreat port 15 and the cylindrical main body 31 of the nozzle 30 (that is, a shape obtained by removing a pair of arched portions that are symmetrical in the vertical direction with a horizontal string as a boundary). And a plate-like second closing portion 41B having the same shape as the second opening region 15B and corresponding to the rack 33 (that is, a horizontally long rectangle). The plate thickness dimension of the first closing portion 41A is larger than the plate thickness size of the second blocking portion 41B, and the plate thickness size of the second closing portion 41B is the plate thickness size of the front plate portion 14 (that is, the penetration of the advance / retreat port 15). The dimension is slightly smaller than the dimension in the direction). The front surface of the first closing part 41A and the front surface of the second closing part 41B are continuous with each other. Further, the front surface and the rear surface of the first closing portion 41A are parallel to each other.

  As shown in FIGS. 1, 2, and 5, a fitting convex portion 42 is formed on the rear surface of the first closing portion 41A. The shape of the fitting convex portion 42 is the same shape as the fitting concave portion 35 of the nozzle 30, and the size of the fitting convex portion 42 is set slightly larger than the fitting concave portion 35. A flange portion 43 is formed on the outer periphery of the main body portion 41 so as to be continuous over the entire periphery. The outer peripheral shape of the flange portion 43 is similar to the main body portion 41, and the front surface of the flange portion 43 is continuous with the front surface of the main body portion 41. The maximum plate thickness dimension of the flange portion 43 is constant over the entire circumference, and is the same as the plate thickness dimension of the second closing portion 41B.

  The cap 40 is attached to the front end portion of the nozzle 30 by press-fitting the fitting convex portion 42 into the fitting concave portion 35, and the friction between the outer peripheral surface of the fitting convex portion 42 and the inner peripheral surface of the fitting concave portion 35. The cap 40 is held in the attached state by the resistance. Further, when a forward tensile force exceeding the frictional resistance between the fitting convex portion 42 and the fitting concave portion 35 is applied to the cap 40, the cap 40 can be removed from the nozzle 30.

  As shown in FIGS. 1 and 2, in the state where the cap 40 is attached to the nozzle 30, the rear surface of the first closing portion 41 </ b> A is substantially in close contact with the front surface of the closing member 34 and the front end surface of the cylindrical main body 31. The outer peripheral surface of the blocking part 41A and the outer peripheral surface of the cylindrical main body 31 are substantially flush with each other. That is, the main body 41 of the cap 40 is positioned so as to cover the front end surface of the nozzle 30 from the front. Further, the second closing portion 41 </ b> B is located so as to correspond to the rack 33 from the front, and the flange portion 43 protrudes over the entire circumference from the outer circumference of the nozzle 30. Further, the front surface of the cap 40 is flat over the entire area and is perpendicular to the advancing / retreating direction of the nozzle 30.

  As shown in FIGS. 1, 2, and 5, on the rear surface of the flange portion 43, a rear side taper surface 44 (invention of the present invention) inclined with respect to the rear surface of the main body portion 41 (the first closing portion 41 </ b> A and the second closing portion 41 </ b> B). The taper surface on the nozzle 30 side, which is a constituent element of (1), is continuously formed over the entire region (entire circumference) of the flange portion 43. The rear side taper surface 44 is inclined with respect to the advancing / retreating direction of the nozzle 30, as with the front side taper surface 18. The inclination angle of the rear side taper surface 44 with respect to the rear surface of the main body 41 is the same as the inclination angle of the front side taper surface 18 with respect to the front surface of the front plate portion 14, and the inclination direction of the rear side taper surface 44 is the front side taper. It is parallel to the direction of the inclination of the surface 18. The formation range of the rear side taper surface 44 in the plate thickness direction (front-rear direction) of the flange portion 43 (second closing portion 41B) extends from the front surface to the rear surface of the flange portion 43 (second closing portion 41B).

  Next, the operation of this embodiment will be described. In the state in which the nozzle 30 is retracted to the storage position, as shown in FIG. 1, the whole including the front end portion of the nozzle 30 is stored in the guide hole 21 of the advance / retreat guide 20, so that it is stored in the storage chamber 13. It will be. Since the front end surface of the advance / retreat guide 20 is located behind the rear surface of the front plate portion 14, if the advance / retreat port 15 is opened, there is a possibility that filth may enter the storage chamber 13 from the advance / retreat port 15. is there. In addition, since a clearance 45 is secured between the inner periphery of the guide hole 21 and the outer periphery of the nozzle 30 in order to smoothly advance and retract the nozzle 30, the filth that has entered the storage chamber 13 There is also a risk that it will enter the guide hole 21 through the clearance 45 and adhere to the outer periphery of the nozzle 30 or the inner periphery of the guide hole 21. Moreover, if the filth that has entered the gap between the guide hole 21 and the nozzle 30 is dried and solidified, the advance operation of the nozzle 30 will be hindered.

  Therefore, in this embodiment, the cap 40 is attached to the front end portion of the nozzle 30. The cap 40 forms a gap between the main body 41 that covers the front end surface of the nozzle 30 from the front when the nozzle 30 is retracted to the retracted position, and the opening edge of the front and rear opening 15 of the nozzle 30. And a flange portion 43 to be closed, so that the entire opening region of the advance / retreat port 15 is closed. The cap 40 can reliably prevent filth from entering the storage chamber 13 and the gap between the nozzle 30 and the guide hole 21.

  Further, when the cap 40 becomes dirty, the cap 40 can be removed from the fitting recess 35 and cleaned. Thus, by making the cap 40 detachable with respect to the nozzle 30, the sanitary condition can be kept good. According to the present embodiment, the filth can be prevented from entering the storage chamber 13 simply by attaching the cap 40 to the nozzle 30. Therefore, the number of parts is small compared to the structure in which the shutter is opened and closed by the shutter. That's it.

  When the cap 40 is mounted in the fitting recess 35 and the nozzle 30 is retracted to the retracted position, the outer peripheral edge of the front surface of the flange portion 43 and the front surface of the housing 10 are flush with each other as shown in FIG. The two front surfaces constitute a flat surface. Therefore, a narrow concave portion in which dirt is likely to remain does not occur at the boundary portion between the outer peripheral edge of the flange portion 43 and the front surface of the housing 10. According to this embodiment, even if the cap 40 is not removed from the nozzle 30, the outer peripheral edge of the flange portion 43 and the vicinity thereof can be kept clean by a cleaning operation such as wiping from the front.

  Further, tapered surfaces 18 and 44 that are inclined with respect to the advancing / retreating direction of the nozzle 30 and can be in close contact with each other are formed on the outer peripheral edge portion on the rear surface of the flange portion 43 and the opening edge portion of the advance / retreat port 15 on the front surface of the housing 10. Forming. According to this configuration, even when the nozzle 30 is moved back and forth to the storage position, a positional deviation in the advancing / retreating direction or a positional deviation in the up / down / left / right directions intersecting the advancing / retreating direction occurs immediately before reaching the storage position. The positional deviation of the nozzle 30 is corrected by the tapered surface 44 of the flange portion 43 and the tapered surface 18 of the housing 10. When the nozzle 30 reaches the retracted position, both the tapered surfaces 18 and 44 are in close contact with each other over the entire circumference, so that filth enters the storage chamber 13 through the gap between the cap 40 and the advance / retreat port 15. It can be surely prevented.

Further, since the rear surface side tapered surface 44 is formed on the cap 40, a boundary portion between the front end of the outer peripheral surface of the first closing portion 41A and the rear end of the corresponding region of the rear surface side tapered surface 44 with the first closing portion 41A. Are in an obtuse angled form. Since this boundary portion does not have a narrow step where filth tends to remain, it is easy to perform a cleaning operation and can be kept clean.
In addition, since the front end portion of the outer peripheral surface of the cylindrical main body 31 and the rear end portion of the outer peripheral surface of the first closing portion 41A are substantially flush with each other, a narrow concave portion in which dirt is likely to remain is formed at this boundary portion. Does not occur. Therefore, this boundary portion can be kept clean by a simple cleaning operation.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the nozzle 50 and the cap 60 are configured differently from the first embodiment. Since other configurations are the same as those of the first embodiment, the same configurations are denoted by the same reference numerals, and descriptions of structures, operations, and effects are omitted.

  In the nozzle 30 of the first embodiment, the rack 33 protrudes from the lower surface of the cylindrical main body 31, whereas the nozzle 50 of the second embodiment does not allow the rack 52 to protrude from the lower surface of the cylindrical main body 51. It is in form. As shown in FIG. 6, the outer shape of the cylindrical main body 51 (cross-sectional shape perpendicular to the length direction of the nozzle 50) is substantially the same as the cylindrical main body 31 of the first embodiment. That is, the cylindrical main body 51 has a shape in which a pair of arcuate portions that are vertically symmetrical with respect to a horizontal string in a perfect circle are removed. A rack 52 is formed on the lower surface of the cylindrical main body 51 by forming a plurality of trapezoidal recesses in the length direction of the nozzle 50 at a constant pitch.

  In the first embodiment, the main body 41 of the cap 40 includes the first closing part 41A having the same shape as the cylindrical main body 31 and the second closing part 41B having a shape corresponding to the rack 33. In contrast, the main body 61 of the cap 60 of the second embodiment has the same shape as the cylindrical main body 51 and does not have a portion corresponding to the rack 52. Further, a flange portion 62 that is continuous over the entire circumference is formed on the outer periphery of the main body portion 61. The flange portion 62 and the main body portion 61 have a similar relationship. Further, a fitting convex portion 63 having the same shape as that of the first embodiment is formed on the rear surface of the main body portion 61.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, when the cap is mounted on the fitting portion and the nozzle is retracted to the retracted position, the outer peripheral edge of the front surface of the flange portion is substantially flush with the front surface of the housing. However, instead of this, the outer peripheral edge of the flange portion may be continuous with the front surface of the housing in such a way as to cause a step or unevenness.
(2) In the above embodiment, when the cap is attached to the fitting portion and the nozzle is retracted to the storage position, the front surface of the flange portion and the front surface of the housing form a flat surface. Thus, the front surface of the flange portion and the front surface of the housing may be smoothly connected so as to form a curved surface.
(3) In the above-described embodiment, the front surface of the main body portion of the cap and the front surface of the flange portion are connected to be flush with each other (so as to form a flat surface without a step). The front surface may be continuous in steps.
(4) In the above embodiment, the front surface of the cap is a flat surface over the entire region, but the front surface of the cap may be a curved surface over the entire region, and the front surface of the cap is configured with a flat surface and a curved surface. May be.
(5) In the above embodiment, the outer peripheral edge portion on the rear surface of the flange portion and the opening edge portion of the advancement / retraction opening on the front surface of the housing are formed with tapered surfaces that are inclined with respect to the advance / retreat direction of the nozzle and can be in close contact with each other. Instead, when the rear surface on the outer peripheral edge of the flange portion and the opening edge of the advance / retreat port on the front surface of the housing are flat surfaces substantially perpendicular to the advance / retreat direction of the nozzle, the nozzle is retracted to the retracted position. The flange portion may be accommodated inside the advance / retreat port.
(6) In the above-described embodiment, the nozzle-side fitting portion (fitting recess) is in a form in which the central portion of the front end surface of the nozzle is recessed. It is good also as the form made to protrude.
(7) In the above embodiment, the fitting portion on the nozzle side is formed on the front end surface of the nozzle, but the fitting portion may be formed on the outer peripheral surface of the front end portion of the nozzle.
(8) In the above embodiment, when the nozzle is retracted to the storage position, the whole including the front end of the nozzle is accommodated in the accommodation chamber. Instead, in a state where the nozzle is retracted to the storage position. The front end of the nozzle may be positioned in front of the advance / retreat port. In this case, the cap may be configured such that the flange portion is located behind the main body portion, such as a hat shape or an umbrella shape.

DESCRIPTION OF SYMBOLS 10 ... Housing 13 ... Accommodating chamber 15 ... Advance / retreat port 18 ... Front side taper surface (housing side taper surface)
30 ... Nozzle 32 ... Water outlet 35 ... Fitting recess (fitting portion)
40 ... Cap 41 ... Main body 43 ... Flange 44 ... Rear taper surface (nozzle taper surface)
50 ... Nozzle 60 ... Cap

Claims (3)

A housing having a storage chamber whose front end is opened as an advancing / retreating port;
Between the storage position which has a water discharge port which discharges cleaning water, and stores at least the formation area of the water discharge port in the storage chamber, and the cleaning position in which the water discharge port advances from the advance / retreat port to the front of the storage chamber A nozzle provided for advancement and retreat in the
A cap made detachable with respect to the fitting portion formed at a position in front of the water discharge port in the nozzle,
The cap is
A main body that covers the front end surface of the nozzle from the front in a state where the cap is mounted on the fitting portion;
Formed along the outer periphery of the main body, the cap is mounted on the fitting portion, and the nozzle is retracted to the retracted position, between the outer periphery of the front end of the nozzle and the opening edge of the advance / retreat port. A local cleaning device comprising a flange portion that closes the gap.   In a state where the cap is attached to the fitting portion and the nozzle is retracted to the storage position, the outer peripheral edge of the front surface of the flange portion is configured to be substantially flush with the front surface of the housing. The local cleaning apparatus according to claim 1, wherein   The outer peripheral edge portion on the rear surface of the flange portion and the opening edge portion of the advance / retreat port on the front surface of the housing are formed with tapered surfaces that are inclined with respect to the nozzle advancement / retraction direction and can be in close contact with each other. The local cleaning apparatus according to claim 1 or 2, characterized by the above-mentioned.

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