JP2013040516A - Operation part fixing bolt and drainage system of bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight operation part fixing bolt capable of reducing a manufacturing cost and capable of inhibiting the occurrence of a defect in appearance, and a drainage system of a bathtub, which has the operation part fixing bolt.SOLUTION: An operation part fixing bolt 1 made of a resin is attached to an upper flange part 50a of a bathtub. A flange part 1a of the operation part fixing bolt 1 is used to be attached to a top surface of the upper flange part 50a of the bathtub. A tubular fixing part 1b is used to be fixed to a mechanism part 9. A tubular connection part 1c is positioned between the flange part 1a and the fixing part 1b, and formed integrally with both of the flange part 1a and the fixing part 1b. A slit-like groove 1d is formed on the outer peripheral surface of the connection part 1c.

Description

  The present invention relates to an operation portion fixing bolt and a drainage device for a bathtub, and particularly relates to a resin operation portion fixing bolt and a drainage device for a bathtub having the operation portion fixing bolt.

  An apparatus for opening and closing a drain plug installed on the bottom surface of a bathtub by remote control is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-188197 (Patent Document 1). The drain valve remote control device described in JP-A-2002-188197 includes a frame and a coil spring, and the remote control device is suspended from the flange portion of the bathtub by the frame and the coil spring. is set up.

  Conventionally, the frame (for example, operation part fixing bolt) for attaching such a remote control device to the flange part of a bathtub was comprised from the metal molded product.

JP 2002-188197 A

  When the operation unit fixing bolt is made of a metal molded product, the operation unit fixing bolt is heavy. Further, when the operation portion fixing bolt is formed of a metal molded product, it is necessary to cut the metal after forging the metal, and then perform metal plating, which increases the manufacturing cost. Therefore, in order to reduce the weight and reduce the manufacturing cost, it is conceivable to form the operation portion fixing bolt with a resin.

  However, when the operation part fixing bolt is formed of resin, wrinkles or weld lines may appear on the outer surface of the operation part fixing bolt due to the resin flow during resin molding, which may cause an appearance defect. is there.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an operation unit fixing bolt that is light in weight, can reduce the manufacturing cost, and can suppress occurrence of defects in appearance, and drainage of a bathtub having the operation portion fixing bolt. Is to provide a device.

  One operation part fixing bolt of the present invention is a resin-made operation part fixing bolt that is attached to a mounting object in a bathroom and fixed to a mechanism part for operating a functional component attached to the mounting object. , A flange portion, a cylindrical fixing portion, and a cylindrical connection portion. A flange part is for attaching to the attachment object in a bathroom. The cylindrical fixing portion is for fixing to the mechanism portion. The cylindrical connection portion is located between the flange portion and the fixed portion, and is formed integrally with both the flange portion and the fixed portion. A slit-like groove is formed on at least one of the outer peripheral surface and the inner peripheral surface of the connecting portion.

  Another operation part fixing bolt of the present invention is a resin operation part fixing bolt that is attached to the upper flange part of the bathtub and fixed to a mechanism part for opening and closing a drain plug installed at the bottom of the bathtub. And a flanged portion, a cylindrical fixing portion, and a cylindrical connecting portion. A flange part is for attaching to the upper surface of the upper flange part of a bathtub. The cylindrical fixing portion is for fixing to the mechanism portion. The cylindrical connection portion is located between the flange portion and the fixed portion, and is formed integrally with both the flange portion and the fixed portion. A slit-like groove is formed on at least one of the outer peripheral surface and the inner peripheral surface of the connecting portion.

  According to one and other operation part fixing bolts of the present invention, since the operation part fixing bolt is made of resin, the weight can be reduced and the manufacturing cost can be reduced as compared with the metal molded body.

  In addition, a slit-like groove is formed in the connection portion located between the flange portion and the fixed portion. For this reason, when resin is flowed from the flange part to the fixing part through the connection part during resin molding of the operation part fixing bolt, the resistance of the resin flow is increased in the connection part in which the slit-like groove is formed. As a result, the resin that has entered the flange portion during resin molding is less likely to enter the fixed portion, and the flange portion is filled first. Thereby, generation | occurrence | production of the wrinkle and weld line to a flange part is suppressed, and generation | occurrence | production of the malfunction on an external appearance can be suppressed.

  In the one and other operation portion fixing bolts, the slit-like groove is formed at a position separated by a predetermined distance from the lower surface of the portion protruding in the outer peripheral direction from the connection portion of the flange portion.

  Thereby, when the packing is fitted to the connection portion of the operation unit fixing bolt, the packing is positioned between the lower surface and the slit-like groove, and it is possible to prevent the fitting from being fitted into the slit-like groove. it can.

  In the above-mentioned one and other operation portion fixing bolts, reinforcing ribs that divide the slit-shaped grooves in the circumferential direction are formed in the slit-shaped grooves.

  Thereby, even if the position of the packing fitted in the connecting portion is shifted to the slit-like groove side, the reinforcement rib can prevent the packing from fitting into the slit-like groove. Further, the strength of the connecting portion can be improved by the reinforcing rib.

  In the one and other operation part fixing bolts described above, the thickness of the connection part where the slit-like groove is formed is smaller than the height dimension of the slit-like groove.

  Thereby, the connection part in which the slit-shaped groove was formed at the time of resin flow can be made to function more effectively as resistance of resin flow.

  The bathtub drainage device of the present invention includes any one of the operation unit fixing bolts, the operation switch, and the mechanism unit. The operation switch is for opening and closing the drain plug. The mechanism portion is fixed to the fixing portion of the operation portion fixing bolt, and is for opening and closing the drain plug by remote operation based on the signal of the operation switch.

  As described above, according to the present invention, it is possible to obtain an operation portion fixing bolt capable of reducing the manufacturing cost and suppressing the appearance trouble and the bathtub drainage device having the operation portion fixing bolt.

It is a perspective view which shows roughly a mode that the drainage device of the bathtub in one embodiment of this invention was installed in the bathtub. It is a schematic diagram which shows roughly the structure of the drainage apparatus of the bathtub in one embodiment of this invention. It is a fragmentary sectional view which shows roughly the structure of the operation part fixing volt | bolt vicinity used for the drainage apparatus of the bathtub in one embodiment of this invention. It is a perspective view which shows roughly the structure of the operation part fixing bolt in one embodiment of this invention from upper direction. It is a perspective view which shows roughly the structure of the operation part fixing bolt in one embodiment of this invention from the downward direction. It is sectional drawing which shows schematically the structure of the operation part fixing bolt in one embodiment of this invention. It is a schematic sectional drawing which follows the VII-VII line of FIG. It is sectional drawing which shows schematically the structure of the metal mold | die for forming the operation part fixing bolt in one embodiment of this invention. It is a top view for demonstrating the flow of resin when inject | pouring resin from the inner peripheral side of a flange part cavity in the metal mold | die shown in FIG. It is a schematic sectional drawing which shows the 1st process of the manufacturing method of the operation part fixing bolt in one embodiment of this invention. It is a schematic sectional drawing which shows the 2nd process of the manufacturing method of the operation part fixing bolt in one embodiment of this invention. It is sectional drawing which shows schematically the structure of the metal mold | die for forming the operation part fixing bolt in a 1st comparative example. It is a top view for demonstrating the flow of resin when inject | pouring resin from the outer peripheral side of a flange part cavity in the metal mold | die shown in FIG. It is sectional drawing which shows schematically the structure of the metal mold | die for forming the operation part fixing bolt in a 2nd comparative example. It is sectional drawing which shows roughly the structure by which the slit-shaped groove | channel was formed in the inner peripheral side of the operation part fixing bolt. It is a perspective view which shows roughly the structure of the jet bath in one embodiment of this invention. It is a schematic diagram which shows a mode that the operation part fixing bolt in one embodiment of this invention was fixed to the mechanism part of the jet bath.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the configuration of the drainage device installed in the bathroom will be described with reference to FIGS.

  With reference to FIG. 1, the drainage device 40 mainly includes a drain plug 20, a remote control device 10, and a cable 30. The drain plug 20 is installed in the bottom part of the bathtub 50, and drains and stores the hot water in the bathtub 50 by opening and closing a drain outlet. The remote control device 10 is installed on the upper flange portion 50a of the bathtub 50, and is for opening and closing the drain plug 20. The cable 30 is installed between the drain plug 20 and the remote control device 10, and transmits an opening / closing force for opening / closing the drain plug 20 according to the opening / closing operation of the remote control device 10 to the drain plug 20. Is.

  With reference to FIG. 2 and FIG. 3, the drain plug 20 mainly has a valve body 21, a base 22, and an elevating mechanism portion 24. The base 22 constitutes an opening of the drain outlet 23, and the valve body 21 is arranged on the base 22 so that the opening can be opened and closed. The valve body 21 is configured to be movable up and down by the lift mechanism 24, and the drain port 23 can be opened and closed as the valve body 21 moves up and down.

  The remote operation device 10 mainly includes an operation unit fixing bolt 1, a female screw member 2, an operation button 4, an operation switch 5, a control circuit board 6, and a mechanism unit 9.

  The operation portion fixing bolt 1 is attached to the upper flange portion 50 a of the bathtub 50. The operation portion fixing bolt 1 is fixed to a mechanism portion 9 for opening and closing the drain plug 20 or the like. The female screw member 2 is for sandwiching the upper flange portion 50 a of the bathtub 50 between the operation portion fixing bolt 1 and the female screw member 2. The female screw member 2 is configured to be able to be screwed into a male screw portion provided on the outer peripheral surface of the operation portion fixing bolt 1. When the upper flange portion 50a of the bathtub 50 is sandwiched between the operation portion fixing bolt 1 and the female screw member 2, the packing 3 (FIG. 3) is disposed between the operation portion fixing bolt 1 and the upper flange portion 50a. Has been. This packing 3 is for preventing hot water from entering between the flange portion 1a of the operation portion fixing bolt 1 and the upper flange portion 50a.

  The operation button 4 is disposed so as to be exposed from the operation portion fixing bolt 1, and the operation switch 5 is disposed below the operation button 4. Accordingly, the operation switch 5 can be pressed by pressing the operation button 4. The operation switch 5 is configured to generate a signal for opening and closing the drain plug 20 by this pressing operation. The control circuit board 6 is configured to generate a signal for controlling the operation of the mechanism unit 9 based on the signal of the operation switch 5.

  The mechanism unit 9 mainly includes a motor 7 and a cable movable mechanism unit 8. The motor 7 is configured to receive a signal from the control circuit board 6 so that the rotor can rotate. The cable movable mechanism unit 8 is configured to convert the rotational power of the rotor into a linear propulsive force and transmit it to the cable 30.

  The cable 30 connects the cable movable mechanism unit 8 and the lifting mechanism unit 24 to each other. The cable 30 is provided so as to receive a straight propulsion force from the cable movable mechanism 8 and to apply a force for moving the valve body 21 up and down to the lifting mechanism 24.

  In the opening operation of the drain plug 20 in the drainage device 40 described above, first, when the operation button 4 of the remote control device 10 is pressed and the operation switch 5 is turned on, the motor 7 is driven and the rotor is clockwise when viewed from above, for example. Rotate to. The rotational power of the rotor is converted into a linear propulsion force by the cable moving mechanism 8 and transmitted to the cable 30. Thereby, the raising / lowering mechanism part 24 connected to the cable 30 pushes up the valve body 21, and the drain port 23 is open | released.

  Further, in the closing operation of the drain plug 20, when the operation button 4 of the remote control device 10 is pressed again and the operation switch 5 is turned on, the motor 7 is driven and the rotor rotates counterclockwise, for example, when viewed from above. The rotational power of the rotor is converted into a linear propulsion force by the cable moving mechanism 8 and transmitted to the cable 30. Thereby, the raising / lowering mechanism part 24 connected to the cable 30 lowers the valve body 21, and the drain port 23 is obstruct | occluded.

  Next, the structure of the operation part fixing bolt 1 used for said drainage apparatus is demonstrated using FIGS.

  Referring mainly to FIG. 4 to FIG. 6, the operation portion fixing bolt 1 has a flange portion 1 a, a fixing portion 1 b, and a connection portion 1 c. The flange portion 1a, the fixing portion 1b, and the connection portion 1c are integrally formed, and the whole is made of resin.

The flange part 1a protrudes in the outer peripheral direction rather than the connection part 1c. The flange portion 1a has an annular shape (for example, an annular shape) having a circular through hole 1a ₁ at the center. The fixing part 1b is a part for fixing to the above-mentioned mechanism part 9 (FIG. 2). The fixing portion 1b has a cylindrical shape (for example, a cylindrical shape), and has a male screw portion on the outer peripheral portion thereof. The connection part 1c is located between the flange part 1a and the fixed part 1b, and is connected to the flange part 1a and the fixed part 1b. The connecting portion 1c has a cylindrical shape (for example, a cylindrical shape).

Referring mainly to FIG. 6, here, the boundary between the flange portion 1a and the connecting portion 1c is the inner peripheral side end portion 1f of the lower surface 1a ₂ of the portion protruding from the connecting portion 1c of the flange portion 1a in the outer peripheral direction. is there. The boundary between the connecting portion 1c and the fixed portion 1b is the end portion 1g of the lower surface 1a ₂ side of the male screw portion (including the incomplete thread portion). That is, the portion sandwiched between the inner peripheral end 1f of the lower surface 1a ₂ and the end portion 1g of the male screw portion is the connecting portion 1c. A slit-like groove (concave portion) 1d extending along the circumferential direction is formed on the outer peripheral surface of the connecting portion 1c.

The slit-shaped groove 1d is formed at a position separated from the inner peripheral side end 1f of the lower surface 1a _{2 by} a predetermined distance L1. The predetermined distance L1 preferably has a length equal to or greater than the thickness of the packing 3 (FIG. 3) fitted in the connecting portion 1c, and preferably has a length of 1 mm to 2 mm, for example. The radial thickness L3 of the portion where the slit-shaped groove 1d is formed is smaller than the height dimension L2 of the slit-shaped groove 1d.

  Referring mainly to FIG. 7, reinforcing ribs 1e that divide the slit-shaped groove 1d in the circumferential direction are formed in the slit-shaped groove 1d. That is, the slit-shaped groove 1d has a plurality of grooves divided in the circumferential direction by the reinforcing ribs 1e. The radial thickness L5 of the reinforcing rib 1e is the same as the radial thickness L6 (FIG. 6) of the connecting portion 1c where the slit-shaped groove 1d is not provided, and the portion where the slit-shaped groove 1d is provided. It is larger than the thickness L3 in the radial direction.

  Next, the resin molding method of the operation part fixing bolt 1 of this Embodiment is demonstrated using FIGS. 8-11.

  Referring to FIG. 8, the mold used in the resin molding method of the present embodiment includes, for example, an upper mold 61, a lower mold 63 positioned below the upper mold 61, and a lateral slide. It has horizontal molds 62a and 62b that move. The upper mold 61, the lower mold 63, and the horizontal molds 62a and 62b constitute a cavity 71 for forming the operation portion fixing bolt 1 inside the mold.

The cavity 71 of the operation portion fixing bolt 1 has a flange portion cavity 71a corresponding to the flange portion 1a, a fixing portion cavity 71b corresponding to the fixing portion 1b, and a connection portion cavity 71c corresponding to the connecting portion 1c. Yes. Protrusions 62a ₁ and 62b ₁ protruding from the outer peripheral side to the inner peripheral side are formed in each of the horizontal molds 62a and 62b. The convex portion 62a _1, 62b _1, the connecting portion cavity 71c is formed with a recess serving as the slit-like groove.

  Referring to FIG. 9, a circular runner 66 is provided so as to be connected to the entire inner circumference of the annular flange cavity 71a, and a so-called disc gate is employed. A resin injection portion (runner or sprue) 65 is connected to the central portion of the circular runner 66 in plan view.

  Referring to FIG. 10, at the time of resin molding, resin 80 is injected from resin injection portion 65 into circular runner 66, flows through circular runner 66 from the central portion toward the outer periphery, and flows into flange portion cavity 71a. To do. The resin 80 that has flowed into the flange portion cavity 71a attempts to flow into the lower fixed portion cavity 71b through the connection portion cavity 71c.

However, convex portions 62a ₁ and 62b ₁ are formed in the region P1 of the connection portion cavity 71c, and the flow path of the resin 80 is narrowed in the region P1 of the connection portion cavity 71c. For this reason, the resistance of the resin flow increases in the region P1, and the resin 80 that has entered the flange cavity 71a is less likely to enter the fixed cavity 71b, and fills the flange cavity 71a first.

  Referring to FIG. 11, after the resin 80 is completely filled in the flange cavity 71a, the resin 80 flows into the fixed cavity 71b through the connection cavity 71c. The resin 80 is completely filled in the fixed portion cavity 71b, whereby the injection of the resin 80 is completed.

  Thereafter, the upper mold 61 is moved upward or the lower mold 63 is moved downward, and the horizontal molds 62a and 62b are slid in the horizontal direction, whereby the resin molded body is taken out from the mold, The operation portion fixing bolt 1 shown in FIG. 6 is manufactured by removing the runner portion, deburring, and the like.

  Next, the effect of this embodiment will be described in comparison with the first comparative example (FIGS. 12 and 13) and the second comparative example (FIG. 14).

  Referring to FIGS. 12 and 13, when resin is injected from the outer peripheral side of the flange cavity 71a as in the first comparative example (in the case of a so-called side gate), the resin has an arrow in the flange cavity 71a. Proceed from both sides along. In this case, as shown in FIG. 13, the resins collide on the side opposite to the resin injection portion into the flange portion cavity 71a, and a weld line 81 is generated at that portion. In particular, since the flange portion is the external appearance surface of the operation portion fixing bolt, if the weld line 81 is generated in this portion, the external appearance is deteriorated.

  Therefore, as in the second comparative example shown in FIG. 14, it is conceivable to employ a so-called disk gate in which resin is injected from the entire inner circumference side of the flange cavity 71a. In this case, no resin collision occurs in the flange cavity 71a as in the first comparative example. However, the resin that has entered the flange cavity 71a is filled into the fixed cavity 71b through the connection cavity 71c. The resin completely fills the inside of the fixed portion cavity 71b and then fills the inside of the flange portion cavity 71a.

  In this case, the upper part of the flange part cavity 71a is finally filled with resin. For this reason, wrinkles and weld lines having a folded pattern are generated on the upper surface of the flange cavity 71a, resulting in poor appearance.

On the other hand, in this embodiment, as shown in FIG. 6, a slit-like groove 1d is formed in the connecting portion 1c located between the flange portion 1a and the fixed portion 1b. That is, as shown in FIG. 8, convex portions 62a ₁ and 62b ₁ are formed in the horizontal molds 62a and 62b, respectively, and the resin flow path in the connection portion cavity 71c is narrowed. For this reason, when resin is caused to flow from the flange portion 1a to the fixing portion 1b through the connecting portion 1c during resin molding of the operation portion fixing bolt 1, resistance to resin flow is caused by the slit-shaped groove 1d (region P1 in FIG. 8). growing. As a result, the resin that has entered the flange cavity 71a during resin molding does not easily enter the fixed cavity 71b, and fills the flange cavity 71a first, and then fills the fixed cavity 71b. This prevents the resin from filling the flange portion cavity 71a at the end, thereby suppressing the occurrence of wrinkles or weld lines in the flange portion 1a and suppressing the occurrence of defects in the appearance of the flange portion 1a. it can.

  Moreover, since the operation part fixing bolt 1 is resin, it can reduce in weight compared with a metal molded object, and can reduce manufacturing cost.

In the present embodiment, the slit-shaped groove 1d is formed at a position separated from the inner peripheral side end 1f of the lower surface 1a _{2 by} a predetermined distance L1. Thereby, as shown in FIG. 3, when the packing 3 is fitted to the connection portion 1c of the operation portion fixing bolt 1, the packing 3 is positioned between the lower surface 1a ₂ and the slit-shaped groove 1d. It is possible to prevent fitting into the slit-shaped groove 1d.

  In the present embodiment, a reinforcing rib 1e that divides the slit-shaped groove 1d in the circumferential direction is formed in the slit-shaped groove 1d. Thereby, even if the position of the packing 3 fitted in the connecting portion 1c is shifted to the slit-like groove 1d side, the reinforcement rib 1e can prevent the packing 3 from fitting into the slit-like groove 1d. Further, the strength of the connecting portion 1c can be improved by the reinforcing rib 1e.

  In the present embodiment, the radial thickness L3 of the connecting portion 1c where the slit-shaped groove 1d is formed is smaller than the height dimension L2 of the slit-shaped groove 1d. As a result, as shown in FIG. 10, the slit-like groove 1d can function more effectively as a resin flow resistance during resin flow.

  In the above-described embodiment, the configuration in which the slit-shaped groove 1d is provided on the outer peripheral surface of the connecting portion 1c has been described. However, the slit-shaped groove 1d has at least the outer peripheral surface and the inner peripheral surface of the connecting portion 1c. What is necessary is just to be formed in either. That is, the slit-shaped groove 1d may be provided on the outer peripheral surface of the connecting portion 1c as shown in FIG. 6, or may be formed on the inner peripheral surface of the connecting portion 1c as shown in FIG. It may be formed on both the outer peripheral surface and the inner peripheral surface.

  The number of reinforcing ribs 1e formed in the slit-shaped groove 1d may be one or plural. When a plurality of reinforcing ribs 1e are formed, it is preferable that the reinforcing ribs 1e are arranged at equal intervals in the circumferential direction as shown in FIG. This effectively prevents the packing 3 from fitting into the slit-shaped groove 1d.

  The length in the circumferential direction of the slit-shaped groove 1d (when the slit-shaped groove 1d is composed of a plurality of grooves divided by the reinforcing rib 1e, the total length in the circumferential direction of each groove) is the length of the connecting portion 1c. It is preferably 80% or more of the circumference. That is, the length in the circumferential direction of the slit-shaped groove 1d is four times or more the circumferential length of the reinforcing rib 1e (when there are a plurality of reinforcing ribs 1e, the total circumferential length of the reinforcing ribs 1e). It is preferable that Thereby, the resistance at the time of resin flow can be effectively given by the slit-shaped groove 1d.

  Further, when the slit-shaped groove 1d is divided in the circumferential direction by the reinforcing rib 1e and has a plurality of groove portions, the slit-shaped groove 1d corresponds to a virtual straight line AA passing through the center C as shown in FIG. It preferably has a line-symmetric shape, and preferably has a point-symmetric shape with respect to the center C. Thereby, fitting of the packing 3 into the slit-shaped groove 1d can be prevented with a good balance.

  The operation unit fixing bolt 1 and the drainage device 40 of the present embodiment are particularly suitable for a drainage device having a drain plug 20 that automatically opens and closes in conjunction with automatic hot water filling. In addition, the operation unit fixing bolt 1 and the drainage device 40 of the present embodiment are particularly suitable for the drainage device 40 having an automatic drainage function in conjunction with an automatic bath cleaning function.

  Moreover, the operation part fixing bolt 1 of this Embodiment may be fixed to mechanism parts, such as a jet bath. As shown in FIGS. 16 and 17, the jet bath drives the pump 91 by a signal from the operation unit 90 and sucks hot water in the bathtub 50 from the suction port 92 and discharges it from the jet nozzle 93. The operation unit 90 includes an operation button 4, an operation switch 5, and a control circuit board 6, and corresponds to a jet bath mechanism. The operation unit is configured to generate a signal for operating the functional components (pump 91, suction port 92, jet nozzle 93) and to input the signal to the pump 91 through the signal line 94. A power supply line 95 is connected to the pump 91, and the power supply line 95 is wired to the ceiling through a wall, for example.

  The operation part fixing bolt 1 is not limited to the one fixed to the jet bath mechanism part, but operates a functional component attached to an attachment target such as the upper flange part 50a of the bathtub 50 or a bathroom counter in the bathroom. As long as it is fixed to the mechanism part for this.

  Further, it is preferable to use, for example, a metallic resin or a resin containing pearl for the operation portion fixing bolt 1.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention relates to a resin operation portion fixing bolt that is attached to an upper flange portion of a bathtub and is fixed to a mechanism portion for opening and closing a drain plug disposed at the bottom portion of the bathtub, and a drainage device for a bathtub having the same. It can be advantageously applied.

1 Operation part fixing bolt, 1a flange part, 1a ₁ through hole, 1a ₂ lower surface, 1b fixing part, 1c connecting part, 1d slit-like groove, 1e reinforcing rib, 1f inner peripheral side end part, 1g terminal part, 2 female Screw member, 3 packing, 4 operation button, 5 operation switch, 6 control circuit board, 7 motor, 8 cable movable mechanism, 9 mechanism, 10 remote control device, 20 drain plug, 21 valve body, 22 base, 23 drain Mouth, 24 Lifting mechanism part, 30 Cable, 40 Drainage device, 50a Upper flange part, 50 Bathtub, 61 Upper mold, 62a ₁ convex part, 62a, 62b Horizontal mold, 63 Lower mold, 65 Resin injection part, 66 Runner, 71 cavity, 71a Flange cavity, 71b Fixed cavity, 71c Connection cavity, 80 Resin, 90 Operation part, 91 Pump, 92 Suction port, 93 Jet Nozzle, 94 signal lines, 95 power lines.

Claims (6)

A resin-made operation part fixing bolt that is attached to an attachment target in a bathroom and is fixed to a mechanism part for operating a functional component attached to the attachment target,
A flange portion for mounting on the mounting target in the bathroom;
A cylindrical fixing part for fixing to the mechanism part;
A cylindrical connecting portion located between the flange portion and the fixed portion, and formed integrally with both the flange portion and the fixed portion;
An operation portion fixing bolt, wherein a slit-like groove is formed on at least one of an outer peripheral surface and an inner peripheral surface of the connection portion. A resin operation part fixing bolt attached to the upper flange part of the bathtub and fixed to a mechanism part for opening and closing a drain plug installed at the bottom of the bathtub,
A flange portion for mounting on the upper surface of the upper flange portion of the bathtub;
A cylindrical fixing part for fixing to the mechanism part;
A cylindrical connecting portion located between the flange portion and the fixed portion, and formed integrally with both the flange portion and the fixed portion;
An operation portion fixing bolt, wherein a slit-like groove is formed on at least one of an outer peripheral surface and an inner peripheral surface of the connection portion.   3. The operation portion fixing bolt according to claim 1, wherein the slit-like groove is formed at a position spaced apart from a lower surface of a portion of the flange portion that protrudes in an outer peripheral direction from the connection portion by a predetermined distance.   The operation part fixing bolt according to any one of claims 1 to 3, wherein the slit-like groove is formed with a reinforcing rib that divides the slit-like groove in a circumferential direction.   The operation portion fixing bolt according to any one of claims 1 to 4, wherein a thickness of the connection portion at a portion where the slit-like groove is formed is smaller than a height dimension of the slit-like groove. The operation part fixing bolt according to claim 2,
An operation switch for opening and closing the drain plug;
A drainage device for a bathtub, comprising: the mechanism portion fixed to the fixing portion of the operation portion fixing bolt, and the mechanism portion for remotely opening and closing the drain plug based on a signal of the operation switch.

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