JP2015113602A - Water discharge pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge pipe improved in workability of fixing a bolt to a water discharge pipe body.SOLUTION: A water discharge pipe 10 comprises: a water discharge pipe body 20 to be fixed to a counter 11; a to-be-fastened part 31 provided in the water discharge pipe body 20 and having a cutout 37; a shaft 51 passing through the cutout 37; a bolt 50 having a head 53 with a larger diameter than that of the shaft 51, at an upper end of the shaft 51 and fastening the water discharge pipe body 20 to the counter 11; and a fastening nut 60 screwed from the another (lower) end of the shaft 51 and fastening the to-be-fastened part 31 with the head 53. The cutout 37 is open to a direction orthogonal to an axial direction of the shaft 51 of the bolt 50 and has such a size that the shaft 51 passes through the cutout 37 from the opening to the depth part.

Description

  The present invention relates to a water discharge pipe fixed to a base such as a counter of a washstand.

  A water discharge pipe used for an automatic faucet or the like is fixed to a base such as a counter of a washstand. The water discharge pipe is usually fixed to the base body using a bolt. In the structure described in Patent Document 1, one end side of the bolt is inserted into the bottom portion on the base end side of the water discharge pipe main body. A fixing nut is screwed into a portion where the bolt protrudes from the bottom toward the back side of the water discharge pipe main body, and the bolt is fixed to the water discharge pipe main body. The other end of the bolt is inserted through a mounting hole formed in the base, and then a horseshoe-shaped fixture is inserted and a fastening nut is screwed. By screwing the fastening nut, the base body is sandwiched between the water discharge pipe body and the fixture, and the water discharge pipe body is fixed to the base body.

Japanese Patent Laid-Open No. 10-299047

  In the structure of Patent Document 1, in order to fix the bolt to the water discharge pipe main body, a fixing nut is screwed into a part of the bolt protruding from the bottom of the water discharge pipe main body. There is a limited work space in the main body of the water discharge pipe, and it is difficult for a worker's fingers, tools, etc. to enter the back side from the opening on the base end side.

  This invention is made | formed in view of such a subject, The objective is to provide the technique which improves workability | operativity when fixing a volt | bolt to a water discharge pipe main body.

  The aspect with this invention for solving the above-mentioned subject is related with a water discharge pipe. The water discharge pipe is provided on the water discharge pipe main body to be fixed to the base body, the to-be-fastened portion provided in the water discharge pipe main body, the shaft portion inserted into the notch hole, and one end side of the shaft portion. A head having a diameter larger than that of the shaft, a bolt for fixing the water discharge pipe body to the base body, a fixing nut that is screwed in from the other end of the shaft, and sandwiches the fastened portion between the head, The notch hole is opened in a direction intersecting the axial direction of the shaft portion, and is formed to have a size that can pass through the shaft portion from the opening side to the back side.

  According to this aspect, it is possible to fix the bolt to the fastened portion by disposing the shaft portion of the bolt in the notch hole of the fastened portion without allowing the operator to insert a finger or the like into the back side of the water discharge pipe body. . Therefore, workability when fixing the bolt to the water discharge pipe main body is improved.

  Moreover, in the above-mentioned aspect, you may further provide the butting part which is provided in the water discharge pipe main body and opposes the end surface of the one end side of a volt | bolt. According to this aspect, when the shaft portion of the bolt is disposed in the cutout hole, the bolt can be abutted against the abutting portion, and the bolt can be aligned in the axial direction of the water discharge pipe body, and the workability during the work is good. It becomes.

  In the above-described aspect, the bolt includes an engaging portion that is formed on the outer peripheral surface of the shaft portion and engages with the inner wall surface of the notch hole in the circumferential direction, and the notch hole extends from the opening side toward the back side. When passing the portion, the width dimension between the pair of inner wall surfaces facing each other may be determined so that the engagement portion engages with the inner wall surface of the notch hole in the circumferential direction to restrict the rotation of the bolt. . According to this aspect, the axial portion of the bolt can be moved from the opening side of the notch hole toward the back side while keeping the circumferential direction of the bolt constant.

  According to this invention, workability | operativity when fixing a volt | bolt to a water discharge pipe main body improves.

It is a block diagram of the automatic faucet in which the fixing structure of the water discharge pipe which concerns on 1st Embodiment is used. It is sectional drawing seen from the front of the water discharge pipe main body about the fixing structure of the water discharge pipe which concerns on 1st Embodiment. It is an exploded view of the fixed structure of the water discharge pipe concerning a 1st embodiment. (A) is the perspective view which looked at the volt | bolt from the front side, (b) is the perspective view which looked at the back side, (c) is the BB sectional drawing of (a), (d) is ( It is CC sectional view taken on the line of a). (A) is a perspective view of a fixture, (b) is the top view, (c) is the DD sectional view taken on the line of FIG. (A) is the sectional view on the AA line of FIG. 2, (b) is the figure which abbreviate | omitted the head part of the volt | bolt from (a). (A) is sectional drawing which shows the middle state of the operation | work which fixes a volt | bolt to a water discharge pipe main body, (b) is the DD sectional view taken on the line of (a).

  In the following description, for the sake of convenience, the positional relationship between the components may be expressed based on the illustrated state, but the positional relationship between the components is not limited.

[First Embodiment]
FIG. 1 shows a configuration diagram of an automatic faucet 100 in which a water discharge pipe 10 according to the first embodiment is used. The automatic water tap 100 includes a water discharge pipe 10, a solenoid valve 120, an object detection sensor 130, and a control unit 140.

  The water discharge pipe 10 includes a water discharge pipe main body 20 in which a base end portion 20a is fixed to a counter 11 (base body) of a washstand. The water discharge pipe main body 20 is fixed so as to protrude in the normal direction from the upper surface side (one surface side) of the counter 11. The counter 11 is formed in a flat plate shape, and an attachment hole 13 for inserting a shaft portion 51 of a bolt 50 described later is formed.

  In the present example, the water discharge pipe main body 20 is formed in an inverted U shape by bending an intermediate portion thereof, and is formed in a so-called gooseneck shape. The water discharge pipe body 20 is configured by a casting made of a metal material. The water discharge pipe main body 20 is provided with a water discharge port 21 for discharging water to the distal end portion 20b. The water discharge pipe main body 20 is formed of a single member from the base end portion 20a to the tip end portion 20b.

  A sensor unit 23 and a water discharge port member 25 are attached to the distal end portion of the water discharge pipe main body 20. The sensor unit 23 is connected to the control unit 140 via a flexible sensor cable 27 and incorporates a light emitting unit and a light receiving unit of the object detection sensor 130. The water outlet member 25 is connected to the electromagnetic valve 120 via a flexible water supply hose 29, and an outlet 25 a serving as a water outlet 21 for discharging water supplied from the water supply through the water supply path 121 in the water supply hose 29. Provided.

  The electromagnetic valve 120 is installed in the middle of a water supply path 121 for supplying water to the water outlet 21 of the water discharge pipe main body 20. The solenoid valve 120 opens and closes the water supply channel 121 under the control of the control unit 140.

  In this example, the object detection sensor 130 is an infrared distance measuring sensor having a light emitting unit and a light receiving unit. The object detection sensor 130 receives the reflected light from the detection object of the light projected from the light emitting unit, and the human hand is in a detection area within a predetermined range with respect to the spout 21 of the spout main body 20. It is detected whether there is an object to be detected. The object detection sensor 130 outputs a signal indicating the detection result of the detection object to the control unit 140 via the sensor cable 27.

  In this example, the control unit 140 is configured by a circuit board on which a microcomputer is mounted. The control unit 140 controls to open and close the electromagnetic valve 120 based on an output signal indicating the detection result from the object detection sensor 130, and switches whether water is supplied from the water discharge port 21 of the water discharge pipe main body 20. At this time, the solenoid valve 120 is controlled so as to switch presence / absence of water supply to the water discharge port 21 of the water discharge pipe main body 20 based on an output signal from the object detection sensor 130. The control unit 140 may be realized by a combination of elements and circuits including a computer CPU and memory.

  FIG. 2 shows a sectional view of the fixing structure 40 of the water discharge pipe 10 as seen from the front of the water discharge pipe 10, and FIG. 3 shows an exploded view thereof. The fixing structure 40 includes a bolt 50, a fixing nut 60, a fixing tool 70, and a fastening nut 80 in addition to the water discharge pipe main body 20.

  The water discharge pipe main body 20 is provided with a fastened portion 31 and an abutting portion 33 in the base end portion 20a. In this embodiment, the fastened part 31 and the abutting part 33 are formed so as to protrude radially inward from the inner peripheral surface of the water discharge pipe main body 20, and are provided by integral molding with the water discharge pipe main body 20. The to-be-fastened part 31 and the abutting part 33 are provided so that the insertion space 35 into which the water supply hose 29 and the sensor cable 27 can be inserted remains in the cross section perpendicular to the axis of the water discharge pipe body 20.

  The fastened part 31 is formed in a plate shape parallel to the direction intersecting the axial direction of the water discharge pipe main body 20. A cutout hole 37 penetrating in the axial direction of the water discharge pipe body 20 is formed in the fastened portion 31.

  4A is a perspective view of the bolt 50 as viewed from the front side, FIG. 4B is a perspective view of the bolt 50 as viewed from the back side, FIG. 4C is a sectional view taken along line BB in FIG. ) Shows a cross-sectional view taken along line CC of (a). The bolt 50 has a shaft portion 51 and a head portion 53. The shaft portion 51 includes a rotation preventing portion 55 provided on the upper end side (one end side), a male screw portion 57 provided on the lower end side (the other end side) of the shaft portion 51 with respect to the rotation preventing portion 55, and a shaft of the male screw portion 57. And a reduced diameter portion 59 provided at an intermediate position in the direction. The reduced diameter portion 59 is formed by reducing the diameter from the male screw portion 57. The head 53 is formed with a diameter larger than that of the shaft 51 on the upper end side of the shaft 51. The head 53 is provided by integral molding with the shaft 51.

  Returning to FIG. 2, the detent portion 55 of the bolt 50 is inserted into the cutout hole 37 of the fastened portion 31. The anti-rotation portion 55 is not provided with a thread on its outer peripheral surface. As for the external thread part 57 of the volt | bolt 50, the fixing nut 60 is screwed into the part protruded from the notch hole 37 of the to-be-fastened part 31 to the lower end side from the lower end side. By fastening the fixing nut 60, the fastened portion 31 is sandwiched between the head 53 of the bolt 50 and the fixed nut 60, and the bolt 50 is fixed to the fastened portion 31. The male threaded portion 57 of the bolt 50 is inserted into the mounting hole 13 of the counter 11 at a portion protruding from the proximal end side opening of the water discharge pipe main body 20 to the lower end side.

  The fixture 70 is disposed on the lower surface side of the counter 11 which is opposite to the water discharge pipe body 20 with respect to the counter 11. The water discharge pipe main body 20 and the fixture 70 are arranged so as to sandwich the counter 11 from both sides in the thickness direction.

  5A shows a perspective view of the fixture 70, FIG. 5B shows a plan view thereof, and FIG. 5C shows a cross-sectional view taken along the line DD of FIG. The fixture 70 is formed in a circular truncated pyramid shape in plan view, and a tapered surface 70a is formed on the outer peripheral side so as to approach the central axis A1 as it goes upward.

  The fixture 70 is formed with a shaft hole 71 and a lead-out hole 73 penetrating in the axial direction of the water discharge pipe body 20. The shaft hole 71 is formed at a position eccentric from the central axis A1 in a plan view of the fixture 70. Returning to FIG. 2, the male threaded portion 57 of the bolt 50 is inserted through the shaft hole 71 of the fixture 70 at a portion protruding from the mounting hole 13 of the counter 11 to the lower end side. The lead-out hole 73 is formed by notching so as to open in a direction intersecting the penetrating direction (left-right direction in FIG. 2). The fixture 70 has a horseshoe shape in a plan view by forming the extraction hole 73. A water supply hose 29 and a sensor cable 27 (not shown in FIG. 2) are inserted into the water discharge pipe main body 20 from the distal end side to the proximal end side, and the lower surface of the counter 11 is passed through the mounting hole 13 of the counter 11 and the extraction hole 73 of the fixture 70. Pulled out to the side.

  As shown in FIG. 3, the fixture 70 has a multi-layer structure in which a lower metal member 70A and an upper elastic member 70B such as rubber are overlapped and fixed together by bonding or the like. Composed. The elastic member 70B is disposed so as to cover the upper surface of the metal member 70A. The fixture 70 is formed such that the inner diameter of the shaft hole 71 of the elastic member 70B is slightly smaller than the outer diameter of the male thread portion 57 of the bolt 50. The elastic member 70B comes into contact with the male thread portion 57 of the bolt 50 inserted through the shaft hole 71 with elastic deformation, and the fixing tool 70 can be temporarily held with respect to the bolt 50 by the elastically deformed portion.

  Returning to FIG. 2, in the male thread portion 57 of the bolt 50, the fastening nut 80 is screwed into the portion protruding from the shaft hole 71 of the fixture 70 from the lower end side. The fixing tool 70 is fastened by the fastened part 31 and the bolt 50 by fastening the fastening nut 80. Accordingly, the counter 11 is sandwiched between the water discharge pipe main body 20 and the fixture 70, and the water discharge pipe main body 20 is fixed to the counter 11. At this time, the tapered surface 70a of the elastic member 70B of the fixture 70 comes into contact with the lower peripheral portion of the mounting hole 13 with elastic deformation. An annular packing 41 is sandwiched between the opening edge of the base end portion 20 a of the water discharge pipe main body 20 and the counter 11.

  6A is a cross-sectional view taken along line AA in FIG. 2, and FIG. 6B is a view in which the head 53 of the bolt 50 is omitted from FIG. The cutout hole 37 of the water discharge pipe main body 20 is formed so as to open in a direction intersecting with the axial direction of the shaft portion 51 of the bolt 50. The notch hole 37 is provided so as to extend in a groove shape from the opening side toward the back side, and a bolt doorway 37a that opens to the side of the fastened portion 31 and a back side that is provided on the back side opposite to the bolt doorway 37a. Includes bottom 37b. The cutout hole 37 is formed in a size that can pass through the detent portion 55 of the bolt 50 from the bolt doorway 37a on the opening side to the back bottom portion 37b on the backside.

  A pair of engaging portions 56 are formed on the outer peripheral surface of the rotation preventing portion 55 of the bolt 50. The engaging portion 56 is formed by a flat surface formed on the outer peripheral surface of the axial cross section of the shaft portion 51. The pair of engaging portions 56 are formed such that flat surfaces are arranged in parallel with the central axis A2 of the shaft portion 51 interposed therebetween. The outer peripheral surface of the rotation preventing portion 55 is formed in an arc shape at a position shifted from the engaging portion 56 in the circumferential direction. The anti-rotation portion 55 is formed in a non-circular shape in which the radial length from the central axis A2 of the shaft portion 51 to the outer peripheral surface is different in the circumferential direction. The notched hole 37 of the fastened portion 31 is formed to have a size that allows the engaging portion 56 of the rotation preventing portion 55 to engage with the inner wall surface of the notched hole 37 in the circumferential direction. The engaging portion 56 of the rotation preventing portion 55 is engaged with the inner wall surface of the notch hole 37 in the circumferential direction, and the relative rotation of the shaft portion 51 with respect to the notch hole 37 is restricted.

  The cutout hole 37 of the water discharge pipe main body 20 is determined so that the width dimension W between a pair of inner wall surfaces 37c facing each other is the same from the bolt side entrance 37a on the opening side to the back bottom part 37b. As a result, when the rotation preventing portion 55 of the bolt 50 is passed through the notch hole 37 from the bolt inlet / outlet port 37a to the deep bottom portion 37b, the engaging portion 56 of the bolt 50 is engaged with the inner wall surface 37c of the notch hole 37 in the circumferential direction. The rotation of the bolt 50 is restricted.

  Returning to FIG. 4, one engagement portion 56 of the pair of engagement portions 56 provided in the rotation stop portion 55 is continuously provided up to a range including the male screw portion 57 of the shaft portion 51. The male screw part 57 is not provided with a screw thread in a range over a part in the circumferential direction, that is, a range in which the engaging part 56 is provided, and is provided with a screw thread in the other range. The male thread portion 57 is formed in a noncircular shape in which the radial length from the central axis A2 of the shaft portion 51 to the outer peripheral surface differs in the circumferential direction, and the axial orthogonal cross section is asymmetric with respect to the central axis A2. As shown in FIG. 5C, the shaft hole 71 of the fixture 70 is formed in a shape that fits with the male screw portion 57. The engaging portion 56 of the male screw portion 57 engages with the inner wall surface of the shaft hole 71 in the circumferential direction, and relative rotation of the shaft portion 51 of the bolt 50 with respect to the shaft hole 71 of the fixture 70 is restricted. Since the axially orthogonal cross section of the male screw portion 57 is formed asymmetrically with respect to the central axis A2, when the male screw portion 57 is fitted into the shaft hole 71 of the fixture 70, the circumferential direction of the fixture 70 with respect to the male screw portion 57 Is constant. Therefore, the operation | work which aligns the direction of the circumferential direction of the fixing tool 70 with respect to the external thread part 57 becomes unnecessary, and the workability | operativity at the time of the fixing operation | work of the water discharge pipe main body 20 becomes favorable.

  Returning to FIG. 2, the abutting portion 33 of the water discharge pipe main body 20 is formed in a plate shape parallel to the direction intersecting the axial direction of the water discharge pipe main body 20. The abutting portion 33 is provided in the water discharge pipe main body 20 at a distance from the fastened portion 31 and faces the upper end surface 50 a on the upper end side of the bolt 50. The abutting portion 33 is provided on the back side in the water discharge pipe body 20 from the fastened portion 31. The abutting portion 33 is provided so that the position overlaps with the cutout hole 37 and the cutout hole 37 of the fastened portion 31 in the axial direction of the water discharge pipe main body 20. When the bolt 50 is inserted from the proximal end side opening of the water discharge pipe main body 20, the upper end of the bolt 50 can be abutted against the abutting part 33, and the displacement of the bolt 50 in the axial direction of the water discharge pipe main body 20 is achieved. Is regulated.

  Next, a method for fixing the water discharge pipe 10 to the counter 11 using the fixing structure 40 of the water discharge pipe 10 according to the present embodiment will be described.

  Fig.7 (a) is sectional drawing which shows the middle state of the operation | work which fixes the volt | bolt 50 to the water discharge pipe main body 20, (b) is the DD sectional view taken on the line of (a). First, the upper end portion of the bolt 50 is inserted from the opening of the proximal end portion 20a of the water discharge pipe main body 20 in a state where the lower end side of the bolt 50 is gripped by an operator. At this time, the upper end portion of the bolt 50 may be abutted against the abutting portion 33 of the water discharge pipe main body 20, and the bolt 50 may be aligned in the axial direction of the water discharge pipe main body 20.

  The shaft portion 51 of the bolt 50 is inserted into the notch hole 37 of the fastened portion 31 from the bolt inlet / outlet port 37a after the circumferential direction of the rotation preventing portion 55 is matched. The shaft portion 51 of the bolt 50 is moved until it contacts the back bottom portion 37b while sliding the engaging portion 56 of the rotation preventing portion 55 on the inner wall surface 37c of the cutout hole 37. At this time, the engaging portion 56 of the bolt 50 is engaged with the inner wall surface 37c of the notch hole 37 in the circumferential direction, and the rotation of the bolt 50 is restricted. Therefore, the shaft portion 51 of the bolt 50 can move until it contacts the back bottom portion 37b of the cutout hole 37 while keeping the circumferential direction constant. At this time, the bolt 50 may be moved in a state in which the upper end portion of the bolt 50 is abutted against the abutting portion 33 of the water discharge pipe main body 20.

  Returning to FIG. 2, the fixing nut 60 is screwed into the male threaded portion 57 of the bolt 50 from the lower end side into the portion protruding from the cutout hole 37 of the tightened portion 31, and the bolt 50 is tightened by tightening the fixing nut 60. 31 is fixed.

  The male thread portion 57 of the bolt 50 is inserted through the mounting hole 13 of the counter 11 at a portion protruding from the fixing nut 60 toward the lower end side. At this time, the water supply hose 29 and the sensor cable 27 drawn out from the opening of the base end portion 20 a of the water discharge pipe main body 20 are drawn out to the lower surface side through the mounting hole 13 of the counter 11.

  A shaft hole 71 of the fixture 70 is inserted into the male threaded portion 57 of the bolt 50 from the lower end side in a portion protruding from the mounting hole 13 of the counter 11. At this time, the water supply hose 29 and the sensor cable 27 can be arranged in the extraction hole 73 from the opening of the extraction hole 73.

  A fastening nut 80 is screwed into the male threaded portion 57 of the bolt 50 from the lower end side into a portion protruding from the shaft hole 71 of the fixture 70, and the counter between the water discharge pipe body 20 and the fixture 70 is tightened by fastening the fastening nut 80. 11 is sandwiched, and the water discharge pipe main body 20 is fixed to the counter 11.

  According to the water discharge pipe 10 according to the above-described embodiment, the bolt 50 is inserted into the cutout hole 37 formed in the fastened part 31, so that the work is performed from the opening on the proximal end side to the back side in the water discharge pipe main body 20. The shaft portion 51 of the bolt 50 can be disposed in the cutout hole 37 of the fastened portion 31 without the operator entering a finger or the like. Therefore, workability when fixing the bolt 50 to the water discharge pipe main body 20 is improved.

  Moreover, as a structure for an operator to work without allowing a finger or the like to enter the inner side of the water discharge pipe main body 20, the water discharge pipe main body 20 is constituted by a plurality of members by dividing the water discharge pipe main body 20, and bolts attached to the water discharge pipe main body 20 It can be considered that an opening for inserting 50 is provided separately from the base end. In this regard, according to the fixing structure 40 according to the present embodiment, the water discharge pipe main body 20 does not need to be configured by a plurality of members, and therefore, the joint between the plurality of members does not appear on the appearance of the water discharge pipe main body 20, and the water discharge pipe The design of the main body 20 becomes good.

  Further, since the fixing nut 60 is screwed from the lower end side of the shaft portion 51 of the bolt 50, the bolt 50 is fastened to the fastening pipe main body 20 without inserting a finger or the like from the proximal end side opening portion to the back side. 31 can be fixed.

  Further, since the abutting portion 33 is provided in the water discharge pipe main body 20, when the shaft portion 51 of the bolt 50 is disposed in the notch hole 37, the bolt 50 is abutted against the abutting portion 33, and the shaft of the water discharge pipe main body 20 is arranged. The bolt 50 can be aligned in the direction. Further, the bolt 50 can be moved in a state where the bolt 50 is abutted against the abutting portion 33, and the workability during the work is improved.

  Moreover, since the engaging part 56 which controls the relative rotation of the axial part 51 of the volt | bolt 50 with respect to the notch hole 37 of the to-be-fastened part 31 and the axial hole 71 of the fixing tool 70 is provided, the to-be-fastened part 31, the volt | bolt 50, and a fixing nut are provided. 60, the fastening nut 80 can rotate integrally. Therefore, it becomes difficult for the fixing nut 60 and the fastening nut 80 to loosen, and the tightening force by the fixing nut 60 and the fastening nut 80 can be exhibited over a long period of time. Moreover, since the rotation of the bolt 50 is not required to be bonded, workability when the bolt 50 is fixed to the water discharge pipe main body 20 and workability when the water discharge pipe main body 20 is fixed to the counter 11 are improved.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment only shows the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  The water discharge pipe 10 may be used for facilities installed in buildings, ships, and the like, and may be used for kitchens, hand-washers, bathrooms, and the like in addition to the washstands. Moreover, the counter 11 was illustrated as a base | substrate to which the water discharge pipe 10 is fixed. The base is exemplified by a counter in a washstand or a kitchen, but also includes a wall member or the like that partitions the outside of a facility such as a bathroom. Moreover, although the water discharge pipe | tube 10 illustrated the case where it was used for an automatic faucet, you may be used for other faucets, such as a lever faucet.

  The main body 20 is not limited to the gooseneck shape, and may be formed in a known shape. Moreover, the water discharge pipe main body 20 may be configured by combining a plurality of members instead of a single member. Further, the head portion 53 of the bolt 50 may be provided by screwing a nut into the shaft portion 51 without being provided integrally with the shaft portion 51.

  The width dimension W of the notch hole 37 is such that when the shaft portion 51 of the bolt 50 is passed from the opening side of the notch hole 37 toward the back side, the engaging portion 56 is circumferentially connected to the inner wall surface 37c of the notch hole 37. What is necessary is just to determine so that rotation of the volt | bolt 50 may be controlled by engaging. Therefore, the width dimension W of the notch hole 37 does not have to be the same from the bolt doorway 37a to the back bottom part 37b, and the length at the midway position may change.

  Moreover, the fixture 70 is not limited to a horseshoe shape with respect to its shape. Moreover, the fixture 70 may be comprised with the nut.

DESCRIPTION OF SYMBOLS 10 Water discharge pipe, 11 Counter (base | substrate), 20 Water discharge pipe main body, 31 Fastened part, 33 Abutting part, 37 Notch hole, 50 Bolt, 51 Shaft part, 53 Head part, 55 Anti-rotation part, 56 Engagement part, 60 fixing nut, 70 fixing tool.

Claims (3)

A water discharge pipe body to be fixed to the substrate;
Fastened part provided in the water discharge pipe body, and a notch hole is formed;
A shaft portion inserted through the notch hole, a head portion having a diameter larger than the shaft portion at one end side of the shaft portion, and a bolt for fixing the water discharge pipe body to the base body;
A fixing nut that is screwed in from the other end side of the shaft portion and sandwiches the fastened portion with the head portion,
The notch hole opens in a direction intersecting the axial direction of the shaft portion, and is formed to have a size that can pass through the shaft portion from the opening side toward the back side.   The water discharge pipe according to claim 1, further comprising an abutting portion that is provided in the water discharge pipe main body and faces an end face on one end side of the bolt. The bolt includes an engaging portion formed on an outer peripheral surface of the shaft portion,
The notch hole is configured such that when the shaft portion is passed from the opening side toward the back side, the engagement portion is engaged with the inner wall surface of the notch hole in the circumferential direction so that rotation of the bolt is restricted. The water discharge pipe according to claim 1 or 2, wherein a width dimension between a pair of inner wall surfaces facing each other is defined.

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