JP7484076B2 - Component mounting structure and drain plug opening/closing device equipped with said structure - Google Patents

Description

The present invention relates to a member mounting structure that uses a fixing member to mount a target member at a desired position, and a drain plug opening and closing device equipped with this member mounting structure.

The present applicant has previously proposed an example of a drain plug opening and closing operating device as described in Patent Document 1.
The drain plug opening/closing device described in the document is a device for remotely opening and closing the drain plug of a bathtub, and is attached to a bathtub flange. The attachment means includes attaching a fixing member to the bathtub flange, and then using a fastener to fix and connect the housing member (the member to be attached) of the drain plug opening/closing device to the fixing member. The fixing member is fixed to a desired portion by clamping the desired portion using a nut screwed into a threaded portion provided on the outer circumferential surface and a flange portion provided on the upper portion of the fixing member. Meanwhile, the means for fixing and connecting the housing member to the fixing member includes inserting (engaging) a locking member into the first and second groove portions provided on the fixing member and the housing member, respectively, in a state in which the first and second groove portions are set to be aligned in the circumferential direction. The locking member is a notched ring-shaped member such as a C-ring that can be expanded and contracted.
According to the above-mentioned means, the relative positioning of the fixing member and the member to which it is attached can be accurately achieved by using the locking member. The installation of the locking member is easy, and it is possible to improve the ease of installation of the drain plug opening and closing device.

However, there is still room for improvement in the above-mentioned conventional technology, as described below.

When a drain plug opening/closing device is attached to a bathtub flange and used, it is common to remove the drain plug opening/closing device from the bathtub flange when carrying out maintenance work. This removal work is carried out by moving the locking member that has entered the first and second grooves laterally (radially) of the fixed member or housing member, and removing it from the first and second grooves. However, if the locking member is removed in this way, there is a risk that the locking member will be lost during subsequent maintenance work on the drain plug opening/closing device. In addition, the burden of being careful not to lose the locking member is also large. Therefore, it is desirable to eliminate this problem.

Japanese Patent No. 5040085

The present invention was conceived in light of the above-mentioned circumstances, and aims to provide a member attachment structure that can adequately resolve the problem of losing the locking member used in the fixed connection when the fixed connection of the attachment target member to the fixed member is released, and a drain plug opening and closing device equipped with this member attachment structure.

To solve the above problems, the present invention provides the following technical solutions:

A member mounting structure provided by a first aspect of the present invention comprises a fixing member which is fixed and mounted at a desired position, and which has a peripheral wall portion and a first groove portion provided on an outer surface of the peripheral wall portion; a target member which has a fitting portion which can be fitted into the peripheral wall portion, and a second groove portion which is provided on the outer surface of the fitting portion and which can be set to an arrangement aligned in the circumferential direction of the fitting portion with respect to the first groove portion; and a locking member which is in the shape of a notched ring with both ends opposed to each other with a gap therebetween and which can expand and contract in the opposing direction of both ends, wherein the locking member surrounds the peripheral wall portion and the fitting portion, and is set to an engaged state in which it has advanced into the first and second groove portions, so that the target member is fixedly connected to the fixing member, The locking member stopper further includes an engaging portion for engaging both ends to engage with each other so as to prevent further displacement of the locking member in the first direction when the locking member is set to a displaced state in which it has escaped from at least one of the first and second groove portions by being displaced in a first radial direction, thereby enabling the locking member to be held on the attachment target member or the fixed member, and the peripheral wall portion of the fixed member is capable of being externally fitted into the fitting portion of the attachment target member, and this peripheral wall portion is capable of entering inside the locking member when the locking member is externally fitted into the fitting portion so as to enter the second groove portion, and the outer surface portion of the tip portion has an inclined surface formed such that the outer diameter becomes smaller toward the tip side of the peripheral wall portion .

According to this configuration, the following effects can be obtained.
That is, when the fixed connection state of the attachment target member to the fixed member is released for the purpose of performing maintenance work on the attachment target member, the locking member is displaced in the first direction to escape from at least one of the first and second grooves. In this case, in the present invention, the locking member is engaged with the locking member stopper engagement portion so as not to be further displaced in the first direction and can be held in the locking member stopper engagement portion. Therefore, unlike the conventional technology, the risk of accidentally losing the locking member can be eliminated or reduced. The burden of being careful not to lose the locking member can also be reduced.
Furthermore, according to this configuration, the procedure for connecting the target member to the fixing member includes fitting the locking member to the fitting portion of the target member in advance, fitting the peripheral wall of the fixing member to the fitting portion, and inserting the peripheral wall into the locking member during the fitting operation, thereby allowing the locking member to enter the first and second grooves. Meanwhile, the outer surface of the tip of the peripheral wall is formed with a predetermined inclined surface that tapers to a tip, so that the operation of inserting the peripheral wall into the locking member can be performed smoothly and accurately.

In the present invention, preferably, the misaligned state of the locking member is a state in which the locking member does not enter the first groove portion, and both ends enter the second groove portion, and the engagement portion for the locking member stopper is provided on the attachment target member.

With this configuration, when the locking member is set in the misaligned state, both ends of the locking member enter the second groove provided in the attachment target member and engage with the engagement portion for the locking member stopper. Therefore, the locking member can be appropriately held on the attachment target member.

In the present invention, preferably, the attachment target member has a base portion connected to the lower portion of the fitting portion and having a top surface portion with a larger diameter or wider width than the fitting portion, and the engagement portion for the locking member stopper is provided on the base portion.

With this configuration, when the locking member is set in the misaligned state, it is possible to hold the locking member on the target member by receiving it on the top surface of the base of the target member. This makes it possible to more reliably hold the locking member and to reduce the risk of losing it.

In the present invention, preferably, both ends of the locking member are formed with bent portions that are curved or bent toward the outside of the locking member, and the engagement portion for the locking member stopper has a recess that opens in the direction opposite to the first direction, and when the locking member is set in the misaligned state, the bent portions enter the recesses, and this entry is also configured to prevent the bent portions from being misaligned in a direction that intersects with the first direction.

With this configuration, when the locking member is set in the misaligned state and both ends of the locking member are engaged with the engagement portions for the locking member stopper, the engagement state of both ends can be stabilized.

A member mounting structure provided by a second aspect of the present invention comprises: a fixing member which is fixed and mounted at a desired position, and which has a peripheral wall portion and a first groove portion provided on an outer surface of the peripheral wall portion; a target member which has a fitting portion which can be fitted into the peripheral wall portion, and a second groove portion which is provided on the outer surface of the fitting portion and which can be set to an arrangement aligned in the circumferential direction of the fitting portion with respect to the first groove portion; and a locking member which is in the shape of a notched ring with both ends opposed to each other with a gap therebetween and which can expand and contract in the opposing direction of both ends, wherein the locking member surrounds the peripheral wall portion and the fitting portion, and is set to an engaged state in which it has advanced into the first and second groove portions, thereby fixedly connecting the target member to the fixing member, When the locking member is displaced from the locked state position in a first direction, which is the radial direction of the fitting portion, to a displaced state in which the locking member escapes from at least one of the first and second groove portions, the locking member further includes an engaging portion for a locking member stopper, with both ends engaging to prevent further displacement of the locking member in the first direction, thereby enabling the locking member to be held on the attachment target member or the fixed member, and the fixed member includes a threaded portion having a threaded portion into which a nut member is screwed, and a flange portion connected to one end side of the threaded portion, and the desired position is clamped by both the flange portion and the nut member, thereby allowing the fixed member to be attached to this position.

This configuration allows the fixing member to be securely and firmly attached in various positions using a clamping method that utilizes a nut member.

A drain plug opening/closing operating device provided by a third aspect of the present invention is a drain plug opening/closing operating device for opening and closing a desired drain plug, characterized in that it is provided with a member mounting structure provided by the first or second aspect of the present invention, and the member to be mounted is a component part of this drain plug opening/closing operating device.
A drain plug opening/closing operating device provided by a fourth aspect of the present invention is a drain plug opening/closing operating device for opening and closing a desired drain plug, comprising: a fixing member which is fixedly attached at a desired position, and which has a peripheral wall portion and a first groove portion provided on an outer surface of the peripheral wall portion; an attachment target member which has a fitting portion which can be fitted into the peripheral wall portion, and a second groove portion which is provided on the outer surface of the fitting portion and which can be set to an arrangement aligned in the circumferential direction of the fitting portion with respect to the first groove portion; and a locking member which is in the shape of a notched ring with both ends opposed to each other at a distance, and which can expand and contract in the opposing direction of both ends, and the locking member surrounds the peripheral wall portion and the fitting portion, and is set to an engaged state in which it has advanced into the first and second groove portions. The member mounting structure is configured so that the member to be attached is fixedly connected to the fixed member, and when the locking member is displaced from the locked state position in a first direction which is the radial direction of the fitting portion so as to be set in a displaced state in which the locking member escapes from at least one of the first and second groove portions, the two ends engage with each other to prevent further displacement of the locking member in the first direction, and the member mounting structure further includes engaging portions for a locking member stopper that enables the locking member to be held on the member to be attached or the fixed member, and the member to be attached is a component of this drain plug opening and closing operating device.

According to such a configuration, it is possible to obtain the same effects as those described for the member mounting structure provided by the first or second aspect of the present invention.

Other features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiment of the invention, taken in conjunction with the accompanying drawings.

1 is a schematic explanatory diagram showing an example of a member mounting structure according to the present invention and a drain plug opening and closing device equipped with this structure. FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. 3A is a schematic cross-sectional view of a main portion of the member mounting structure shown in FIGS. 1 and 2, and FIG. 3B is a cross-sectional view taken along line IIIb-IIIb of FIG. 3A is a perspective view of a fixing member used in the member mounting structure shown in FIGS. 1 and 2, and FIG. 3B is a perspective view of a nut member that is screwed onto the fixing member. FIG. This is a cross-sectional view taken along line VV of FIG. 3A is a perspective view of a housing member as a mounting target member used in the member mounting structure shown in FIGS. 1 and 2, and FIG. 3B is an enlarged view of a main portion of FIG. 3A. FIG. FIG. 7 is a plan view of the housing member shown in FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. 7. 3A is a plan view of a locking member used in the member mounting structure shown in FIGS. 1 and 2, and FIG. 3B is a side view of FIG. 3A. FIG. 4 is a cross-sectional view showing a state in which a locking member is attached to a housing member. FIG. 11 is a cross-sectional view of a main portion showing a modified example (another embodiment of the present invention) of the configuration shown in FIG. 10. 4 is a cross-sectional view showing a state during an operation in which the housing member is connected to the fixed member as shown in FIG. 3. [0023] FIG. 4 is a plan cross-sectional view showing a state in which the locking member is displaced from the set state shown in FIG. 3 . FIG. 14 is a side cross-sectional view of a main portion of FIG. 13 .

The preferred embodiment of the present invention will be described in detail below with reference to the drawings.

The drain plug opening/closing operating device B shown in Figure 1 is a device for remotely raising and lowering the drain plug 10 of a bathtub 1 installed in a bathroom to open and close the drain outlet 11 of the bathtub 1. The basic configuration of this drain plug opening/closing operating device B is common to the drain plug opening/closing operating device described in Patent Document 1, and this common configuration will be briefly described below.

The drain plug opening/closing device B raises and lowers the drain plug 10 by causing the wire 20 connected to the drain plug 10 to be extended and retracted. As shown in FIG. 2, the means for raising and lowering the wire 20 includes a slide shaft 22 connected to the wire 20 via a coupling 21, and a motor M that allows the slide shaft 22 to move back and forth using the principle of a screw feed mechanism, and these are housed in the upper and lower housing members 3 and 3A that are connected to each other. The upper housing member 3 also incorporates a switch 24 that performs a predetermined switching operation when an operation button 23 attached to the upper surface of the housing member 3 is operated, and a circuit board 26 on which a light source 25 such as an LED light source is mounted to notify the user of the on/off status of the drain plug opening/closing device B. The housing member 3 also includes a light-transmitting hole 39a for passing light emitted from the light source 25, and a guide tube portion 39 provided with a hole portion 39b for transmitting the operation of the operation button 23 to the switch 24.

The lower housing member 3A, when combined with the upper housing member 3 described above, encloses all of the above-mentioned components of the drain plug opening and closing operating device B, and serves to prevent water and the like from easily getting on the components.
The above-mentioned components of the drain plug opening and closing operation device B are omitted in the figures other than FIG.

The drain plug opening and closing device B is equipped with a member mounting structure A. This member mounting structure A is equipped with a fixing member 4, a nut member 49, and a locking member 5, and also includes the upper housing member 3 described above as the member to be mounted.

As can be clearly seen in Figures 4 and 5, the fixing member 4 has a hollow circular flange portion 42 connected to the upper end of a cylindrical peripheral wall portion 40. The peripheral wall portion 40 is divided into a threaded portion 40a, where a threaded portion is formed on the outer circumferential surface, and a region 40b near the lower end portion, which serves as a non-threaded portion located below the threaded portion 40a. A nut member 49, as shown in Figure 4(b), is screwed and attached to the threaded portion 40a.

As shown in Figures 2 and 3(a), the fixing member 4 is inserted into the hole 12a provided in the bathtub flange 12, and the bathtub flange 12 is tightened by both the flange portion 42 and the nut member 49. This attaches the fixing member 4 to the bathtub flange 12. The drain plug opening and closing device B is attached to the bathtub flange 12 using this fixing member 4. More specifically, as described below, with the fitting portion 30 of the housing member 3 fitted into the peripheral wall portion 40 of the fixing member 4, the locking member 5 is inserted into the first and second groove portions 41, 32 provided therein, and the housing member 3 is fixedly connected to the fixing member 4.

In the region 40b near the lower end of the peripheral wall 40, multiple notches 43 with a bottom opening are formed, and in the region where these notches 43 are not formed, a first recessed groove 41 for inserting the locking member 5 is formed and extends in the circumferential direction.

As can be seen clearly in the enlarged view of the main part in FIG. 4(a), the tip of the peripheral wall portion 40 below the first groove portion 41 is tapered, with an inclined surface 44 formed on the outer surface such that the outer diameter becomes smaller toward the lower tip end of the peripheral wall portion 40. The inclined surface 44 has the effect of making it easier to position the peripheral wall portion 40 inside the locking member 5 during the assembly work in FIG. 12 described below.

As mentioned above, the housing member 3 is an example of the attachment target member according to the present invention. The configuration of part of the housing member 3 was explained with reference to FIG. 2, but as can be seen clearly in FIGS. 6 to 8, it has a fitting portion 30, a base portion 31, a flange piece portion 33 for connecting with the lower housing member 3A, a second recessed groove portion 32, and an engagement portion 34 for the locking member stopper.

As shown in FIGS. 2 and 3, the fitting portion 30 is a portion that fits into the peripheral wall portion 40 of the fixing member 4, and is generally cylindrical in shape and has an upper wall portion.
The base portion 31 is connected to the lower portion of the fitting portion 30 and has an upper surface portion with a larger diameter or width than the fitting portion 30 .

The second groove 32 is a portion for inserting the locking member 5, as described below, and is provided on the outer surface of the lower region of the fitting portion 30. Specifically, the outer surface of the fitting portion 30 is provided with a horizontally oriented convex portion 35 that is generally U-shaped in side view, and the second groove 32 is a partially recessed portion of the convex portion 35 that is approximately in the center of the height direction. The convex portions 35 are provided in the same number (for example, two locations) at positions corresponding to the notches 43 of the fixing member 4, and when the fitting portion 30 is inserted into the peripheral wall portion 40 of the fixing member 4, the convex portions 35 can be inserted into the notches 43 of the fixing member 4 to arrange the first and second groove portions 41, 32 in a circumferentially aligned arrangement (arrangement connected in a ring shape).

The engaging portion 34 for the locking member stopper is a portion for preventing the locking member 5 from further shifting in position when the locking member 5 is set to a predetermined positional shift state described below, and for preventing the locking member 5 from falling off. An upwardly protruding convex portion 36 is provided on the upper surface of the base portion 31 at a position spaced outward from the second recessed groove portion 32, and a part of this convex portion 36 is the engaging portion 34 for the locking member stopper. A reinforcing rib 36a is appropriately provided behind the convex portion 36.

In this embodiment, more specifically, the engagement portion 34 for the locking member stopper is a portion of the upward convex portion 36 where a recess 34a with a sideways opening is formed. This recess 34a is a portion for inserting both ends 50 of the locking member 5, as will be described later with reference to Figures 13 and 14. In Figure 13, the recess 34a (34a') located on the opposite side to the recess 34a into which both ends 50 have inserted is a portion for inserting both ends 50 of the locking member 5 when the mounting direction of the locking member 5 is opposite to that of this embodiment.

Preferably, a connection portion 37 is provided to connect the horizontal and upward convex portions 35, 36. The upper surface of this connection portion 37 is flush with the lower wall surface of the second groove portion 32. If this connection portion 37 is provided, the locking member 5 is stably supported by the connection portion 37 when placed outside the second groove portion 32, and will not fall to a location lower in height than the second groove portion 32.

As shown in FIG. 9, the locking member 5 is a fastener formed by bending a narrow metal band-shaped or linear member, and is a notched ring shape with both ends 50 facing each other at a distance, and can expand and contract in the opposing direction of both ends 50 while retaining spring properties. Both ends 50 of the locking member 5 are formed with bent portions 50a that are curved or bent outward. A roughly U-shaped bent portion 51 is formed on the base side of the locking member 5, which is preferable for increasing the spring force of the locking member 5. This bent portion 51 can be omitted.

As shown in FIG. 3, the locking member 5 can be set in a state in which it is inserted into both the first and second recessed groove portions 41, 32.
The procedure for setting this state is as follows: first, as shown in Fig. 10, with the housing member 3 not assembled to the fixed member 4, the locking member 5 is inserted into the second concave groove portion 32 and set to a state where it is fitted onto the fitting portion 30. This setting is performed by lowering the locking member 5 from above the fitting portion 30. As a modified example, as shown in Fig. 11, if the upper surface portion 35a of the horizontally facing convex portion 35 is inclined, the locking member 5 becomes more likely to expand and deform when it is brought into contact with the upper surface portion 35a, and the installation work of the locking member 5 can be facilitated.

After setting the state shown in FIG. 10, the fitting portion 30 of the housing member 3 is fitted into the peripheral wall portion 40 of the fixing member 4, which has been attached to the bathtub flange 12 in advance, as shown in FIG. 12. At that time, the tip of the peripheral wall portion 40 enters the inside of the locking member 5, and the locking member 5 eventually enters the first and second groove portions 41, 32, as shown in FIG. 3, and the housing member 3 is fixedly connected to the fixing member 4.

In the assembled state shown in FIG. 3, as shown in FIG. 13 and FIG. 14, it is possible to set a positional deviation state in which the locking member 5 is shifted in the first direction N1, which is the radial direction of the fitting portion 30 and the peripheral wall portion 40. The positional deviation of the locking member 5 can be easily caused by pressing both ends 50 with an appropriate force F. In such a positional deviation state, the locking member 5 escapes from the first groove portion 41 and does not enter the first groove portion 41, while both ends 50 enter the second groove portion 32 and enter the recesses 34a of the engagement portion 34 for the locking member stopper, and are in an engaged state.

Next, we will explain the operation of the component mounting structure A and the drain plug opening and closing device B equipped with it.

The drain plug opening/closing device B is normally in the installed state as shown in Figures 2 and 3, but when performing maintenance, the housing member 3 is removed from the fixed member 4 while the fixed member 4 remains attached to the bathtub flange 12. To perform this removal, the locking member 5 is set to a misaligned state as described with reference to Figures 13 and 14. In this set state, the locking member 5 does not enter both the first and second groove portions 41, 32 in a state spanning both, so the fixed connection state of the housing member 3 to the fixed member 4 is released, and the housing member 3 can be removed from the fixed member 4.

On the other hand, in the above-mentioned misaligned state of the locking member 5, both ends 50 of the locking member 5 are engaged with the engaging portion 34, and the locking member 5 is appropriately prevented from further misalignment in the first direction N1. In addition, both ends 50 are sandwiched between the formation portion of the second groove portion 32 and the engaging portion 34. Furthermore, the engagement between both ends 50 and the engaging portion 34 is performed in a state in which both ends 50 enter the sideways opening recess 34a, and the positional misalignment of both ends 50 in the vertical height direction is also restricted. As a result, the locking member 5 is appropriately held by the housing member 3 and can be prevented from falling off the housing member 3. Since the locking member 5 is located on the base portion 31, it is even more difficult for the locking member 5 to fall off the housing member 3. As a result, the risk of accidentally losing the locking member 5 can be eliminated or reduced.

When maintenance of the drain plug opening/closing device B is completed and the housing member 3 is to be reconnected and fixed to the fixed member 4, the locking member 5 is displaced in advance in the direction opposite to the first direction N1 described above, and set to the state shown by the solid line in Figure 10. This operation is also easy and convenient.

The present invention is not limited to the above-described embodiment. The specific configuration of each part of the component mounting structure according to the present invention and the drain plug opening and closing device equipped with this structure can be freely designed and modified in various ways within the intended scope of the present invention.

In the above embodiment, the engaging portion 34 for the locking member stopper has a recess 34a that opens sideways, which is preferable for engaging both ends 50 of the locking member 5, but the present invention is not limited to this, and the recess 34a may be omitted.

As in the above embodiment, the engaging portion 34 for the locking member stopper is easy to provide on the housing member 3 (the member to be attached), and is preferable, but the present invention is not limited to this. Although it is not very practical, it is also possible to provide the engaging portion 34 for the locking member stopper on the fixed member 4 side, so that when the housing member 3 (the member to be attached) is removed from the fixed member 4, the locking member 5 is held on the fixed member 4 side (however, in this case, the locking member 5 must not enter at least the second recessed groove portion 32, and the housing member 3 must be in a state where it can be removed).

In the above-described embodiment, the fitting portion of the mounting target member (housing member) is configured to fit into the peripheral wall portion of the fixing member, but it is also possible to configure the fitting portion of the mounting target member to fit externally onto the peripheral wall portion of the fixing member.
It is preferable that a plurality of first and second groove portions are provided in the fixing member and the mounting target member, but it is sufficient that at least one of each is provided.
The locking member is a notched ring-shaped (C-shaped, U-shaped, etc.) with both ends facing each other at a distance, and is capable of expanding and contracting in the opposing direction of the two ends; there are no limitations on its specific shape, size, material, etc.

The fixing member is not limited to one that clamps the desired position using a nut member and a flange portion. In short, it is sufficient if it can be attached to the desired position using some means. The member attachment structure of the present invention allows the attachment and detachment of the attachment target member to the fixing member to be easily performed using a locking member, and since the fixing member itself is rarely attached or detached to the desired position, various means (for example, a joining means using screws, adhesives, etc.) can be used to attach the fixing member to the desired position.

The member to which the attachment is to be made is not limited to the housing member of the drain plug opening and closing device.
Various devices, equipment, and objects can be used as attachment targets.
The drain plug opening and closing operating device according to the present invention is not limited to a bathtub drain plug, but can also be configured as a device for opening and closing a washbasin drain plug, for example.

A: Component mounting structure B: Drain plug opening/closing operation device N1: First direction 3: Housing component (component to be mounted)
30 Fitting portion 31 Base portion 32 Second groove portion 34 Engagement portion 34a for locking member stopper Concave portion 36 Convex portion 4 Fixing member 40 Peripheral wall portion 40a Thread forming portion 41 First groove portion 42 Flange portion 44 Inclined surface 49 Nut member 5 Locking member 50 Both ends

Claims (7)

a fixing member that is fixedly attached at a desired position and has a peripheral wall and a first recessed groove provided on an outer surface of the peripheral wall;
a mounting target member having a fitting portion that can be fitted to the peripheral wall portion, and a second groove portion that is provided on an outer surface of the fitting portion and can be set to be arranged in a circumferential direction of the fitting portion relative to the first groove portion;
a locking member having a notched ring shape with both ends facing each other with a gap therebetween, and capable of expanding and contracting in the opposing direction of the both ends;
Equipped with
a member mounting structure, wherein the engaging member is set in an engaged state in which the engaging member surrounds the peripheral wall portion and the fitting portion and is inserted into the first and second groove portions, thereby fixedly connecting the mounting target member to the fixing member,
when the locking member is displaced from the locked state position in a first direction as a radial direction of the fitting portion to set the locking member in a displaced state in which the locking member escapes from at least one of the first and second groove portions, the two ends engage with each other to prevent the locking member from further displacing in the first direction, thereby enabling the locking member to be held on the attachment target member or the fixed member,
The peripheral wall portion of the fixing member can be fitted onto the fitting portion of the attachment target member,
This peripheral wall portion is capable of entering inside the locking member when the locking member is externally fitted into the fitting portion so as to enter the second groove portion, and the outer surface of the tip portion is formed with an inclined surface that is inclined so that the outer diameter becomes smaller toward the tip side of the peripheral wall portion. a fixing member that is fixedly attached at a desired position and has a peripheral wall and a first recessed groove provided on an outer surface of the peripheral wall;
a mounting target member having a fitting portion that can be fitted to the peripheral wall portion, and a second groove portion that is provided on an outer surface of the fitting portion and can be set to be arranged in a circumferential direction of the fitting portion relative to the first groove portion;
a locking member having a notched ring shape with both ends facing each other with a gap therebetween, and capable of expanding and contracting in the opposing direction of the both ends;
Equipped with
a member mounting structure, wherein the engaging member is set in an engaged state in which the engaging member surrounds the peripheral wall portion and the fitting portion and is inserted into the first and second groove portions, thereby fixedly connecting the mounting target member to the fixing member,
when the locking member is displaced from the locked state position in a first direction as a radial direction of the fitting portion to set the locking member in a displaced state in which the locking member escapes from at least one of the first and second groove portions, the two ends engage with each other to prevent the locking member from further displacing in the first direction, thereby enabling the locking member to be held on the attachment target member or the fixed member,
A member mounting structure, characterized in that the fixing member has a threaded portion having a threaded portion into which a nut member is screwed and a flange portion connected to one end side of the threaded portion, and the fixing member can be mounted at a desired position by clamping the desired position with both the flange portion and the nut member. The member mounting structure according to claim 1 or 2 ,
the misaligned state of the locking member is a state in which the locking member does not enter the first groove portion and both ends enter the second groove portion,
A member mounting structure , wherein an engagement portion for the locking member stopper is provided on the mounting target member . The member mounting structure according to claim 1 or 2 ,
the mounting target member includes a base portion connected to a lower portion of the fitting portion and having an upper surface portion with a larger diameter or width than the fitting portion,
A member mounting structure , wherein an engagement portion for the locking member stopper is provided on the base portion . The member mounting structure according to claim 1 or 2 ,
The both ends of the locking member are formed with bent portions that are curved or bent toward the outside of the locking member,
the engaging portion for the locking member stopper has a recess that opens in a direction opposite to the first direction,
A member mounting structure configured such that when the engaging member is set to the misaligned state, the bent portion enters the recess, and this entry prevents the bent portion from being misaligned in a direction intersecting the first direction. A drain plug opening and closing device for opening and closing a desired drain plug,
6. A drain plug opening and closing operating device comprising the member mounting structure according to claim 1, wherein the mounting target member is a component part of the drain plug opening and closing operating device. A drain plug opening and closing device for opening and closing a desired drain plug,
a fixing member that is fixedly attached at a desired position and has a peripheral wall and a first recessed groove provided on an outer surface of the peripheral wall;
a mounting target member having a fitting portion that can be fitted to the peripheral wall portion, and a second groove portion that is provided on an outer surface of the fitting portion and can be set to be arranged in a circumferential direction of the fitting portion relative to the first groove portion;
a locking member having a notched ring shape with both ends facing each other with a gap therebetween, and capable of expanding and contracting in the opposing direction of the both ends;
Equipped with
a member mounting structure, wherein the engaging member is set in an engaged state in which the engaging member surrounds the peripheral wall portion and the fitting portion and is inserted into the first and second groove portions, thereby fixedly connecting the mounting target member to the fixing member,
the member mounting structure further includes an engaging portion for a locking member stopper, the engaging portion being engaged with the both ends so as to prevent further displacement of the locking member in the first direction when the locking member is displaced from the locked state position in a first direction as a radial direction of the fitting portion to set the locking member in a displaced state in which the locking member escapes from at least one of the first and second groove portions, and the engaging portion being capable of holding the locking member on the mounting target member or the fixed member,
and a drain plug opening and closing operating device, wherein the attachment target member is a component part of the drain plug opening and closing operating device.

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