JP2023038509A - drain plug device - Google Patents

Abstract

To provide a drain plug device that allows easier insertion of a support shaft mechanism into an inner periphery of a holding part through lower opening of the holding part, and can improve mounting stability of an attachment member to a mounting target part.SOLUTION: An attachment member 4 of a drain plug device comprises: a cylindrical holding part 41; a ring part 43 that is attached to a predetermined attachment target part while being arranged on the inner periphery of the attachment target part; and an arm part 42 that connects the holding part 41 and the ring part 43. The holding part 41 has a holding side slit 41s that opens at a lower end of the holding side slit and penetrates inside and outside. The ring part 43 has a plurality of ring-constituting parts 431, is in a state in which the plurality of ring-constituting parts 431 are separated from each other in a natural state, and is configured such that the plurality of ring-constituting parts 431 are annularly connected when attached to the attachment target part.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a drain plug device provided at a drain port of a tank body.

A drain plug device is provided with a plug cover provided at a drain port of a bath (for example, a bathtub or a washbowl), and the drain port is opened and closed by moving the plug cover up and down.

The drain plug device includes a support shaft mechanism having a vertically movable support shaft for moving the plug lid in addition to the plug lid, and a support shaft mechanism for holding the support shaft mechanism in the drainage channel. An attachment member is known. The attachment member includes a cylindrical holding portion that holds the support shaft mechanism on the inner periphery, and a predetermined attachment target portion (for example, a pipe for draining waste water or a cylindrical drain for connecting the pipe and the tank body). an annular ring portion attached to the attachment target portion in a state of being inserted into the inner circumference of a mouth member, etc.; and an arm portion connecting the holding portion and the ring portion (for example, see Patent Document 1, ). As an attachment member, for example, there is one in which a holding portion, a ring portion, and an arm portion are integrally molded from a single member (for example, a thermoplastic resin such as POM) using an injection molding method or the like.

In addition, the installation of the support shaft mechanism through the inner periphery of the holding portion is achieved by elastically deforming the holding portion, thereby increasing the opening area of the lower opening of the holding portion and moving the supporting shaft mechanism through the lower opening to the inner periphery of the holding portion. It may be performed by inserting the support shaft mechanism. In addition, in the case of an attachment member designed to insert and install the support shaft mechanism in this manner, the holding portion has an opening at the lower end thereof so as to increase the opening area of the lower opening, and extends inside and outside. A plurality of slits are formed therethrough.

By the way, as described above, since the holding portion and the ring portion are connected by the arm portion, the elastic deformation of the holding portion for increasing the opening area is hindered by the ring portion. Therefore, even if a slit is provided, it is by no means easy to install the support shaft mechanism through the inner circumference of the holding portion.

On the other hand, there is an attachment member in which a portion (a portion corresponding to a ring portion) to be attached to an attachment target portion has an arc shape and the portion is discontinuous along the circumferential direction (see, for example, Patent Document 2, etc.). .

JP 2013-194366 A JP 2007-327311 A

However, if the portion to be attached to the attachment target portion is simply made discontinuous along the circumferential direction, the attachment stability of the attachment member to the attachment target portion decreases, and the attachment member easily detaches from the attachment target portion. There is a risk that it will be lost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to facilitate insertion of a support shaft mechanism into the inner circumference of a holding portion through a lower opening of the holding portion, and to provide an attachment mechanism. To provide a drain plug device capable of improving mounting stability of an attachment member to a target part.

Each means suitable for solving the above object will be described below by itemizing. It should be noted that actions and effects peculiar to the corresponding means will be added as necessary.

Means 1. A stopper lid for opening and closing the drain port of the tank body,
a support shaft mechanism having a support shaft capable of vertically moving the plug lid by its own vertical movement;
a cylindrical holding portion that holds the support shaft mechanism on its inner periphery; a ring portion that is attached to a predetermined attachment target portion while being arranged on the inner periphery of the attachment target portion; an attachment member having an arm portion that connects the ring portions,
A drain plug device configured such that the drain port opens and closes as the plug lid moves up and down,
The holding part has a holding side slit that opens at its lower end and penetrates inside and outside,
The ring portion has a plurality of ring-constituting portions, and the plurality of ring-constituting portions are separated from each other in a natural state, while the plurality of ring-constituting portions are in a state of being attached to the attachment target portion. are arranged in a ring,
The attachment member is formed by integrally molding the holding portion, the ring portion, and the arm portion by one member, and widens the holding side slit and increases the opening area of the lower opening of the holding portion. A drain plug device characterized by being elastically deformable so as to sometimes increase the distance between said ring-constituting portions.

The term "natural state" refers to a state in which no particular external force is applied, such as a state in which the device is simply placed on the floor.

According to the above means 1, the ring portion to be attached to the attachment target portion has a plurality of ring-constituting portions, and these ring-constituting portions are separated from each other in a natural state. The attachment member is elastically deformable so as to increase the distance between the ring-constituting parts when increasing the opening area of the lower opening of the holding part while widening the holding-side slit. Therefore, the elastic deformation of the holding portion for increasing the opening area can be prevented by the ring portion. As a result, it is possible to more easily insert and install the support shaft mechanism on the inner periphery of the holding portion through the lower opening.

On the other hand, according to the means 1, when the ring portion is arranged on the inner circumference of the attachment target portion and the ring portion is attached to the attachment target portion, the plurality of ring constituent portions are annularly connected. That is, the ring portion is attached to the attachment target portion in an annular state. Therefore, it is possible to improve the mounting stability of the attachment member to the mounting target portion.

Furthermore, according to the above means 1, the attachment member is formed by integrally molding the holding portion, the ring portion, and the arm portion from a single member (for example, a predetermined thermoplastic resin). Therefore, compared with an attachment member manufactured by assembling a plurality of parts, it is possible to reduce the labor involved in manufacturing the attachment member and to reduce the manufacturing cost. It is also advantageous in terms of management and handling of attachment members.

In addition, the configuration in which the ring-constituting portions are separated from each other in the natural state is also advantageous in that the attachment member is molded as a single member using an injection molding method or the like.

Means 2. The ring component includes a first component and a second component whose end portions are in contact with each other or close to each other when the ring is attached to the attachment target portion,
In a state in which the plurality of ring constituent portions are annularly connected, the end side portion of the second constituent portion is received by the end side portion of the first constituent portion, so that the end side portion of the second constituent portion is The drain plug device according to means 1, characterized in that it is configured so as to be capable of regulating displacement toward the holding portion side.

According to the means 2, in a state in which the plurality of ring constituent portions are annularly connected, that is, in a state in which the ring portion is attached to the attachment target portion, the end side portion of the first constituent portion causes the end side of the second constituent portion to move. By receiving the portion, the displacement of the end portion of the second component portion toward the holding portion side (inward) can be restricted. As a result, it is possible to prevent a situation in which the ring part is elastically deformed toward the holding part (inner side) and the ring part is removed from the attachment target part. As a result, the mounting stability of the attachment member to the mounting target portion can be improved.

Means 3. The first constituent portion and the second constituent portion are configured such that when the ring portion is attached to the attachment target portion, the respective end side portions thereof are overlapped along the radial direction of the ring portion. The drain plug device according to means 2, characterized in that:

According to the means 3, when the ring portion is attached to the attachment target portion, the end portions of the first component portion and the second component portion overlap along the radial direction of the ring portion. Therefore, the first component can more effectively restrict the displacement (elastic deformation) of the end portion of the second component toward the holding portion (inward). As a result, it is possible to prevent a situation in which the ring part is elastically deformed toward the holding part (inner side) and the ring part is removed from the attachment target part. As a result, the mounting stability of the attachment member to the mounting target portion can be improved.

Means 4. Means 2, characterized in that the end side portion of the first constituent portion is in a state of being connected with the arm portion, or in a state of being positioned in the vicinity of the connecting portion of the first constituent portion and the arm portion. Or the drain plug device according to 3.

According to the above means 4, regarding the first component having a role of preventing the second component from being displaced toward the holding portion (inward), the end side portion of the first component is connected to the arm portion. state, or a state in which the arm portion and the first component portion are positioned in the vicinity of the connecting portion. Therefore, a state in which displacement (elastic deformation) toward the holding portion in the end portion of the first component portion is less likely to occur can be achieved. In addition, since displacement (elastic deformation) is less likely to occur in the end portion of the first component, the first component is very effective in displacing the second component toward the holding portion side (inward). can be regulated. As a result, the mounting stability of the attachment member to the mounting target portion can be made very good.

In order to further improve the mounting stability of the attachment member, both end portions of the first constituent portion are connected to the arm portion, or the connecting portions of the arm portion and the first constituent portion are connected to each other. Further, the displacement of the both end side portions of the second component portion toward the holding portion side (inward) can be restricted by the both end side portions of the first component portion. preferably configured.

Means 5. the attachment member has locking means capable of locking end-side portions of the plurality of ring-constituting portions;
5. The drain plug device according to any one of means 1 to 4, characterized in that the plurality of ring-constituting portions can be maintained in an annularly connected state by the locking means.

According to the above-described means 5, the plurality of ring-constituting parts can be maintained in an annularly connected state by the locking means. Therefore, by inserting the support shaft mechanism into the inner periphery of the holding portion and maintaining the plurality of ring-constituting portions in an annularly connected state by the locking means, the opening area of the lower opening of the holding portion is increased. It is possible to suppress this, and in turn, it is possible to more reliably prevent the support shaft mechanism from falling off from the holding portion. In this state, when the attachment member (ring portion) is attached to the attachment target portion, it is possible to attach the attachment while more reliably preventing the support shaft mechanism from falling off without paying particular attention to the support shaft mechanism falling off. A member (ring portion) can be attached. Further, by maintaining the plurality of ring-constituting portions in an annularly connected state by the locking means, the attachment member can be more easily arranged (inserted) with respect to the inner periphery of the attachment target portion. As a result, it is possible to improve the workability of attaching the attachment member very effectively.

It is a partially broken front view, such as a drain plug device. It is a perspective view of the attachment member in a natural state. FIG. 10 is a perspective view of the attachment member when it is attached to a pipe or the like and the ring-constituting portion is in a state of being annularly connected. It is a top view of the attachment member in a natural state. FIG. 4 is a plan view of the attachment member when the ring-constituting portions are annularly connected. FIG. 10 is a plan view of the attachment member in its natural state in another embodiment; In another embodiment, it is a top view of the attachment member when the ring component is in a state in which it is ring-shaped. FIG. 10 is a perspective view of an attachment member having locking means when the locking portion is not locked to the locked portion in another embodiment; FIG. 10 is a perspective view of an attachment member having locking means when the locking portion is locked to the locked portion in another embodiment; FIG. 11 is a partially enlarged perspective view of locking means in another embodiment;

An embodiment will be described below with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is attached to a bathtub 100 as a tub body. The bathtub 100 has a bottom portion 101 forming a bottom surface thereof, and a drain port 102 is formed through the bottom portion 101 .

The drain plug device 1 includes a drain port member 2 , a pipe 3 , an attachment member 4 , a support shaft mechanism 5 and a plug lid 6 .

The drain port member 2 is formed in a cylindrical shape, and is inserted into the drain port 102 so that the center axis of the drain port member 2 substantially coincides with the center axis of the drain port 102 . The drain port member 2 includes a flange portion 21 that protrudes radially outward from its upper end portion, and a male thread portion 22 that is formed on the outer circumference below the flange portion 21 .

The pipe 3 constitutes a flow path for drainage flowing through the drainage port 102, and is a pipe having a cylindrical shape at least on the upper side. The pipe 3 has a female threaded portion 31 into which the male threaded portion 22 can be screwed on the inner periphery on the upper end side thereof. Then, after arranging the pipe 3 so as to be substantially coaxial with the drain port 102 under the bottom surface portion 101, the drain port member 2 is inserted into the drain port 102 and the pipe 3 from above the bottom surface portion 101, and the male screw is inserted. The drain port member 2 and the pipe 3 are connected and both are attached to the bathtub 100 by screwing the portion 22 to the female thread portion 31 and sandwiching the bottom portion 101 between the upper end surfaces of the flange 21 and the pipe 3. state.

In the present embodiment, between the collar portion 21 and the surface (upper surface) of the bottom surface portion 101, and between the upper end surface of the pipe 3 and the back surface (lower surface) of the bottom surface portion 101, elastically deformable Annular sealing members 7 and 8 formed of a material (for example, resin, rubber, etc.) are arranged. These sealing members 7 and 8 prevent water from leaking from between the drain port member 2 and the pipe 3 and the bathtub 100 .

A stepped portion 32 extending in the circumferential direction of the pipe 3 is formed on the inner periphery of the pipe 3 below the female thread portion 31 . In a state where the drain port member 2 and the pipe 3 are connected, an annular mounting groove 9 is formed by the lower end surface of the drain port member 2, the stepped portion 32, and the inner peripheral surface of the pipe 3 positioned therebetween. It has become. The attachment groove 9 functions as a portion to which the attachment member 4 is attached. In this embodiment, the drain port member 2 and the pipe 3 that constitute the mounting groove 9 correspond to the "mounting object".

The attachment member 4 is for holding the support shaft mechanism 5 in the drainage channel. The attachment member 4 includes a cylindrical holding portion 41 for holding the support shaft mechanism 5 and the like. The configuration of the attachment member 4 will be described later.

The support shaft mechanism 5 is a mechanism for moving the cap 6 up and down, and includes an outer cylindrical portion 51 and a support shaft 52 . The outer cylindrical portion 51 has a cylindrical shape and is held by the holding portion 41 in a state that it cannot move up and down.

The support shaft 52 has a columnar shape and is arranged on the inner circumference of the outer cylindrical portion 51 in a vertically movable state. An end portion of a transmission member 10 (for example, a metal wire) for transmitting a driving force due to displacement of an operation member (for example, a push button) (not shown) can come into contact with the lower portion of the support shaft 52 . . The transmission member 10 is arranged so as to be reciprocatable on the inner circumference of the cylindrical tube member 11 . As the transmission member 10 reciprocates, the support shaft 52 moves up and down, and the stopper lid 6 moves up and down as the support shaft 52 moves up and down.

The support shaft mechanism 5 includes a return spring (not shown) in the outer cylindrical portion 51 that applies a force to the support shaft 52 in the backward movement direction (downward direction). Further, the operation device (not shown) including the operation member locks the transmission member 10 in a forward motion (moves from the operation member side to the support shaft mechanism 5 side), thereby moving the support shaft 52 forward. It has a lock mechanism (not shown) for locking in the moved (upward) state. Note that the support shaft mechanism 5 may be provided with a lock mechanism for locking the support shaft 52 in a forward (upward) state.

In this embodiment, the support shaft 52 operates as follows by operating the operating member. That is, when the transmission member 10 moves forward by operating (for example, pressing) the operation member, the support shaft 52 is pushed up by the transmission member 10 against the force from the return spring. When the operation of the operation member is released while the support shaft 52 has moved forward to a position above the predetermined position, the transmission member 10 moves forward by the lock mechanism while the support shaft 52 is lowered slightly. locked in motion. As a result, the support shaft 52 is locked while moving forward (moving upward).

On the other hand, when the operation member is operated again in this state, the transmission member 10 moves forward again, and as a result, the lock of the transmission member 10 by the lock mechanism is released. Then, when the operation of the operation member is released, the support shaft 52 moves backward (downward) together with the transmission member 10 due to the return spring and its own weight.

As described above, in this embodiment, each time the operation member is operated, the support shaft 52 is alternately locked while being moved upward and the support shaft 52 is moved downward as the lock is released. It's like

The plug lid 6 is a plug for opening and closing the drain port 102 . The plug lid 6 includes a disk-shaped plug lid main body portion 61 made of resin or the like, and an annular packing portion 62 attached to the outer peripheral side of the rear surface of the plug lid main body portion 61 . In this embodiment, when the support shaft 52 is moved upward, the central portion of the rear surface of the plug lid main body 61 is simply placed on the upper surface of the support shaft 52 . For example, by providing a cylindrical portion at the center of the back surface of the plug lid main body 61 and fitting the tip of the support shaft 52 to the inner periphery of the cylindrical portion, the plug can be attached to the upper end of the support shaft 52 . It is good also as a structure which connected the cover main-body part 61. FIG.

In this embodiment, when the drain port 102 is in the closed state, when the support shaft 52 moves forward (upward) due to the operation of the operation member, the packing portion 62 is separated from the drain port member 2. . The lock mechanism maintains the support shaft 52 in the forward (upward) state, thereby maintaining the drain port 102 in the open state.

On the other hand, when the drain port 102 is in the open state, when the lock mechanism is unlocked due to the operation of the operation member, the support shaft 52 moves backward (downward) due to the biasing force of the return spring. do. As the support shaft 52 moves back (downward), the stopper lid 6 moves back (downward), and the entire outer peripheral portion of the packing portion 62 comes into contact with the drain port member 2, thereby closing the drain port 102. It is said that

Further, the plug lid 6 is provided with a cylindrical guide portion 63 projecting downward at a portion inside the packing portion 62 on the rear surface portion of the plug lid body portion 61 . The holding portion 41 is inserted through the inner periphery of the guide portion 63 , and the guide portion 63 moves up and down along the outer peripheral surface of the holding portion 41 when the cap 6 moves up and down. This makes it possible to more reliably prevent displacement of the plug lid 6 with respect to the support shaft 52, inclination of the plug lid 6, and the like.

Next, the attachment member 4 will be explained. The attachment member 4 includes an arm portion 42 and a ring portion 43 in addition to the holding portion 41 described above, as shown in FIGS. 2 and 4 show the attachment member 4 in its natural state, and FIGS. 3 and 5 show a state in which the ring portion 43 is attached to the attachment groove 9 and a ring-forming portion 431, which will be described later, is annularly connected. 4 shows the attachment member 4 at the time. "Natural state" refers to a state in which no particular load (load) is applied, such as a state simply placed on the floor.

As described above, the holding portion 41 is for holding the support shaft mechanism 5 on its inner circumference. The holding portion 41 has a cylindrical shape as a whole and is provided coaxially with the ring portion 43 inside the ring portion 43 . The holding portion 41 includes an upper projection portion 41a, a lower projection portion 41b, and a holding side slit 41s.

The upper projecting portion 41 a and the lower projecting portion 41 b are for holding the support shaft mechanism 5 on the inner periphery of the holding portion 41 by vertically sandwiching the outer cylinder portion 51 . The upper projecting portion 41 a is configured by a projection that is provided on the inner periphery of the upper end side of the holding portion 41 and protrudes inward. A pair of upper protrusions 41 a are provided at positions sandwiching the central axis CL of the holding part 41 .

Like the upper protrusion 41a, the lower protrusion 41b is a protrusion that protrudes inward. Unlike the upper protrusion 41a, the lower protrusion 41b is provided on the inner periphery of the holding section 41 on the lower end side (see FIG. 1). . In this embodiment, a pair of lower protrusions 41 b are provided at positions sandwiching the central axis CL of the holding portion 41 . Further, when viewed from above (when the attachment member 4 is viewed along the direction of the central axis CL of the holding portion 41), the upper protrusions 41a and the lower protrusions 41b are alternately positioned along the circumferential direction of the holding portion 41. It is configured to

Further, the lower protrusion 41b has a larger protrusion amount with respect to the inner peripheral surface of the holding section 41 than the upper protrusion 41a. As a result, the support shaft mechanism 5 can be supported in a very stable state by the lower protrusion 41b.

Further, the lower surface of each lower projection 41b is an inclined surface that gradually displaces toward the upper end side of the holding portion 41 toward the center axis CL side of the holding portion 41 (see FIG. 1). In addition, each of the lower protrusions 41b is provided in a positional relationship in which a straight line passing through the two holding-side slits 41s is placed between them when viewed from above (in FIGS. 4 and 5, the holding-side slits 41s are indicated by dotted lines. show). Since the lower projecting portion 41b is configured in this way, the support shaft mechanism 5 is pushed into the holding portion 41 while the tip portion of the support shaft mechanism 5 is brought into contact with the lower surface (inclined surface) of the lower projecting portion 41b. Thus, it is possible to increase the opening area of the lower opening of the holding portion 41 while widening the holding side slit 41s.

The holding-side slit 41s is provided to expand the lower opening of the holding portion 41 so that the holding portion 41 can be elastically deformed. In this embodiment, a pair of holding-side slits 41 s are provided at positions sandwiching the central axis CL of the holding portion 41 .

Each holding-side slit 41 s penetrates the inside and outside of the holding portion 41 and extends in the axial direction of the holding portion 41 (the direction of the central axis CL). Each holding-side slit 41s opens at the lower end of the holding portion 41 (passes through the lower end of the holding portion 41), but does not open at the upper end of the holding portion 41 (does not pass through the upper end). is configured as As a result, the upper portion of the holding portion 41 has an annular shape that is continuous along the circumferential direction of the holding portion 41 .

The arm portion 42 is a portion that connects the outer peripheral surface of the holding portion 41 and the inner peripheral surface of the ring portion 43 . A plurality of arm portions 42 are provided at intervals along the circumferential direction of the holding portion 41 (three at equal intervals in this embodiment). It extends radially outward of the holding portion 41 . Drainage that has flowed into the drain port member 2 and the piping 3 flows downstream through the gaps between the arm portions 42 .

The ring portion 43 functions as an attachment portion of the attachment member 4 to the drain port member 2 and the pipe 3 (that is, "attachment target portion"). In this embodiment, the ring portion 43 is arranged on the inner circumferences of the drain port member 2 and the pipe 3, and is fitted to the inner circumferences of the drain port member 2 and the pipe 3 by being fitted into the mounting groove 9. It is By attaching the ring portion 43 to the drain port member 2 and the pipe 3, the attachment member 4 is installed.

In addition, the ring portion 43 includes a plurality of (two in this embodiment) ring-constituting portions 431 each having a curved plate shape. In this embodiment, a first constituent portion 4311 and a second constituent portion 4312 are provided as the ring constituent portion 431 .

The first constituent portion 4311 has an arcuate shape in plan view, and is in a state of being bridged between the two arm portions 42 . Both end side portions 4311a of the first component portion 4311 along the circumferential direction of the ring portion 43 are located near the connecting portion 44 of the first component portion 4311 and the arm portion 42, respectively. The term “nearby” can refer to a state in which the end side portion 4311 a of the first component portion 4311 protrudes slightly (for example, 10 mm or less) with respect to the arm portion 42 along the circumferential direction of the ring portion 43 . Since the both end side portions 4311a of the first constituent portion 4311 are positioned in the vicinity of the connecting portion 44, the displacement (elastic deformation) of the both end side portions 4311a of the first constituent portion 4311 toward the holding portion 41 side (inside) is almost It is in a state where it does not occur. The arm portion 42 is connected to both end side portions 4311a of the first component portion 4311 (that is, along the circumferential direction of the ring portion 43, both end side portions 4311a of the first component portion 4311 are connected from the arm portion 42). It may be configured to be in a non-protruding state).

The second component part 4312 has an arcuate shape in a plan view, and the end part of the one arm part 42 is connected to the central part of the ring part 43 along the circumferential direction. In this embodiment, in the natural state, the end side portion 4312a of the second component portion 4312 along the circumferential direction of the ring portion 43 is the side (outer side) away from the holding portion 41 and the end side portion 4311a of the first component portion 4311. ). Therefore, in the natural state, the end-side portions of the ring-constituting portions 431 along the circumferential direction of the ring portion 42 are separated from each other. On the other hand, the second constituent portion 4312 is elastically deformable such that its end portion 4312a is displaced toward the end portion 4311a of the first constituent portion 4311a.

Then, by elastically deforming the attachment member 4 (in this embodiment, the second constituent portion 4312) so that both end side portions 4312a of the second constituent portion 4312 are displaced toward the end side portions 4311a, each ring constituent portion 431 can be arranged in a ring. In the present embodiment, when the ring constituent portions 431 are arranged in a ring, both end surfaces of the ring constituent portions 431 (both constituent portions 4311 and 4312) are in contact or close to each other. Here, the "close state" means, for example, when the ring component 431 is slightly deformed by an external force in a state where the ring portion 9 is attached to the drain port member 2 and the pipe (i.e., in a state of use). It can be said that a small gap is formed between the ring-constituting portions 431 so that the ring-constituting portions 431 come into contact with each other.

In a state in which the ring constituent portions 431 are connected in an annular fashion, the end side portion 4312a of the second constituent portion 4312 is received by the end side portion 4311a of the first constituent portion 4311, so that the second constituent portion 4312 is Displacement of the end portion 4312a toward the holding portion 41 side (inward) can be restricted. In the present embodiment, both end surfaces of the first component portion 4311 extend along the radial direction of the holding portion 41 (in other words, a virtual plane including the end surface of the first component portion 4311 is the center of the holding portion 41). The shape of both end faces of the first constituent portion 4311 is set so as to overlap with the axis CL), and both end faces of the second constituent portion 4312 are in surface contact with both end faces of the first constituent portion 4311 or face each other with a slight gap. By being in the facing state, even if a force in the direction of displacing the end portion 4312a of the second component portion 4312 toward the holding portion 41 side (inward) is applied to some extent, the first component portion 4311 is displaced. The end side portion 4312a of the second component portion 4312 is received by the end side portion 4311a, and as a result, the displacement of the end side portion 4312a of the second component portion 4312 toward the holding portion 41 side (inward) is restricted. It's like

Further, when the ring portion 43 is arranged in the mounting groove 9 and attached to the drain port member 2 and the pipe 3, the plurality of ring-constituting portions 431 are annularly connected. Therefore, in a state where the ring portion 43 is attached to the drain port member 2 and the pipe 3, displacement of the end portion 4312a of the second component portion 4312 toward the holding portion 41 side (inward) is restricted.

Further, the attachment member 4 is formed by integrally molding the holding portion 41, the arm portion 42, and the ring portion 43 by one member (that is, one constituent material, in this embodiment, an elastically deformable thermoplastic resin such as POM). It is a thing. The attachment member 4 is manufactured using, for example, an injection molding method.

In addition, when the attachment member 4 increases the opening area of the lower opening of the holding portion 41 while widening the holding side slit 41s, the ring forming portions 431 (in this embodiment, the first forming portion 4311 and the second forming portion 4311 The portion 4312) can be elastically deformed so that the interval between the portions 4312) increases. In the present embodiment, when increasing the opening area of the lower opening of the holding portion 41 while widening the holding side slit 41s, along the widening direction of the holding side slit 41s (the direction indicated by the black arrow in FIG. 4) The attachment member 4 is elastically deformed so that the end portions 4311a and 4312a of the first component portion 4311 and the second component portion 4312 are separated from each other.

Next, a method for installing the drain plug device 1 described above will be described. First, the support shaft mechanism 5 is inserted into the inner periphery of the holding portion 41 so that the support shaft mechanism 5 is held by the holding portion 41 .

That is, by pushing the support shaft mechanism 5 into the holding portion 41 while bringing the tip portion of the support shaft mechanism 5 into contact with the lower surface (inclined surface) of the lower projection portion 41b, the holding side slit 41s widens and the holding portion The attachment member 4 is elastically deformed so that the opening area of the lower opening of 41 increases, and the support shaft mechanism 5 is inserted into the inner periphery of the holding portion 41 through this lower opening. As the support shaft mechanism 5 is inserted into the holding portion 41 , the elastic deformation of the attachment member 4 is released. The mechanism 5 is held. When the opening area of the lower opening of the holding portion 41 is increased, the attachment member 4 is elastically deformed so that the end portions 4311a and 4312a of the ring-constituting portions 431 are separated from each other.

Next, the attachment member 4 in which the support shaft mechanism 5 is inserted into the holding portion 41 is set on the inner periphery of the pipe 3 . That is, the transmission member 10 and the tube member 11 are inserted into the pipe 3 and the ring portion 43 is placed on the stepped portion 32 of the pipe 3 . When the ring portion 43 is placed on the stepped portion 32 , the attachment member 4 is inserted into the pipe 3 while being elastically deformed so that the ring-forming portions 431 are annularly connected.

Next, while connecting the pipe 3 on which the attachment member 4 is set and the drain port member 2, they are attached to the bathtub 100. - 特許庁That is, the pipe 3 in which the attachment member 4 is set is arranged below the bathtub 100 so as to be substantially coaxial with the drain port 102, and then the water is drained to the inner circumference of the pipe 3 (female screw portion 31) through the drain port 102. The male screw portion 22 of the mouth member 2 is screwed. As a result, the pipe 3 and the drain port member 2 are connected, and the bottom portion 101 is sandwiched between the flange portion 21 and the pipe 3 , so that the drain port member 2 and the pipe 3 are attached to the bathtub 100 . Also, the mounting groove 9 is formed by the drain port member 2 and the pipe 3, and the ring portion 43 is arranged in the mounting groove 9, so that the attachment member 4 is attached to the drain port member 2 and the pipe 3. . This work is performed with the sealing members 7 and 8 set at predetermined positions.

In the state where the ring portion 43 is arranged in the mounting groove 9, the second component portion 4312 is maintained in a state of being pushed toward the holding portion 41 side (inner side). , 4312a come into contact with each other or come close to each other, and the plurality of ring-forming portions 431 are annularly connected. Further, the elastic deformation of the attachment member 4 in the direction of widening the holding side slit 41s is restricted by the pipe 3 (attachment target portion). This prevents the opening of the lower portion of the holding portion 41 from being opened, and allows the support shaft mechanism 5 to be supported in an extremely stable state by the lower projection portion 41b.

Finally, the cap 6 is placed on the support shaft 52 of the support shaft mechanism 5 . This completes the installation of the drain plug device 1 .

As described in detail above, according to the present embodiment, the ring portion 43 has a plurality of ring constituent portions 431 (the first constituent portion 4311 and the second constituent portion 4312). The constituent parts 431 are separated from each other. The attachment member 4 is elastically deformable so as to increase the distance between the ring-constituting portions 431 when increasing the opening area of the lower opening of the holding portion 41 while widening the holding-side slit 41s. Therefore, the ring portion 43 does not hinder the elastic deformation of the holding portion 41 for increasing the opening area. This makes it easier to insert and install the support shaft mechanism 5 on the inner periphery of the holding portion 41 through the lower opening.

On the other hand, in this embodiment, when the ring portion 43 is attached to the drain port member 2 and the pipe 3, the plurality of ring-constituting portions 431 are annularly connected. That is, the ring portion 43 is attached to the drain port member 2 and the pipe 3 in an annular state. Therefore, the mounting stability of the attachment member 4 with respect to the drain port member 2 and the pipe 3 can be improved.

Further, the attachment member 4 is formed by integrally molding the holding portion 41, the ring portion 43 and the arm portion 42 as one member. Therefore, compared with an attachment member manufactured by assembling a plurality of parts, it is possible to reduce the labor involved in manufacturing the attachment member 4 and reduce the manufacturing cost. It is also advantageous in terms of management and handling of the attachment member 4 .

In addition, the configuration in which the ring-constituting portions 431 are separated from each other in the natural state is also advantageous in that the attachment member 4 is molded as a single member using an injection molding method or the like.

Further, in a state where the ring portion 43 is attached to the drain port member 2 and the pipe 3, the end portion 4312a of the second constituent portion 4312 is received by the end portion 4311a of the first constituent portion 4311, and the second constituent portion Displacement of the end portion 4312a of 4312 toward the holding portion 41 side (inward) can be restricted. This makes it more difficult for the ring portion 43 to be elastically deformed toward the holding portion 41 (inward), and the ring portion 43 to come off from the drain port member 2 and the pipe 3 . As a result, the mounting stability of the attachment member 4 can be improved.

Furthermore, regarding the first constituent portion 4311 that prevents displacement of the end side portion 4312a of the second constituent portion 4312 toward the holding portion 41 side (inside), the end side portion 4311a of the first constituent portion 4311 is the arm portion 42 and in the vicinity of the connection portion 44 of the first constituent portion 4311. As shown in FIG. Therefore, a state in which displacement (elastic deformation) of the end portion 4311a of the first component portion 4311 toward the holding portion 41 side (inward) is less likely to occur can be achieved. In addition, displacement (elastic deformation) of the end portion 4311a of the first component portion 4311 is less likely to occur. Displacement in the side portion 4312a can also be very effectively restricted. As a result, the mounting stability of the attachment member 4 can be further improved.

In particular, in this embodiment, both end side portions 4311a of the first constituent portion 4311 are positioned in the vicinity of the connecting portion 44, and the holding portion Displacement of both end side portions 4312a of the second component portion 4312 toward the 41 side (inside) can be restricted. Therefore, the mounting stability of the attachment member 4 can be made very good.

In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other applications and modifications not exemplified below are naturally possible.

(a) In the above embodiment, when the ring constituent portions 431 (the first constituent portion 4311 and the second constituent portion 4312) are arranged in a ring, both end faces of the constituent portions 4311 and 4312 contact or approach each other. is configured to On the other hand, as shown in FIGS. 6 and 7, when the ring constituent portions 431 are arranged in an annular shape, the end portions 4311a and 4312a of the first constituent portion 4311 and the second constituent portion 4312 form the rings. It may be configured so that it overlaps along the radial direction of the portion 43 . That is, when the ring constituent portions 431 are arranged in a ring, the end portion 4311a of the first constituent portion 4311 is positioned inside the end portion 4312a of the second constituent portion 4312. may

When configured as described above, the first component 4311 more effectively restricts the displacement (elastic deformation) of the end portion 4312a of the second component 4312 toward the holding portion 41 (inward). can be done. This makes it more difficult for the ring portion 43 to elastically deform toward the holding portion 41 (inward), and the ring portion 43 to come off from the drain port member 2 or the pipe 3 . As a result, the mounting stability of the attachment member 4 can be improved.

It should be noted that placing the end side portion 4311a of the first component portion 4311 in the state of being connected to the arm portion 42 or in the state of being positioned in the vicinity of the connecting portion 44 means that the end side portion 4312a of the second component portion 4312 is It also works effectively when the end side portion 4311a of the first component portion 4311 is positioned inside. That is, the end side portion 4311a of the first component portion 4311, which is less likely to be displaced toward the holding portion 41 side (inward), prevents the displacement of the end portion 4312a of the second component portion 4312 toward the holding portion 41 side (inward). This can be regulated very effectively, and as a result, the mounting stability of the attachment member 4 can be further enhanced.

(b) In the configuration in which the ring-constituting portions 431 are separated in a natural state as in the above embodiment, as shown in FIGS. Means 45 may be provided, and the locking means 45 may be configured to be able to maintain the plurality of ring-constituting portions 431 in an annularly connected state.

As shown in FIG. 10, the locking means 45 includes, for example, a hook-shaped locking portion 45a that protrudes outward and is provided at an end side portion 4311a of the first component portion 4311, and a second component portion 4312. and a hook-shaped engaged portion 45b that protrudes inward and is provided at the end portion 4312a. By locking the locking portion 45a to the locked portion 45b, it becomes possible to restrict the displacement of the end side portion 4312a of the second component portion 4312 in the direction away from the first component portion 4311, thereby forming a plurality of ring structures. The portion 431 (each constituent portion 4311, 4312) can be maintained in a ring-shaped continuous state.

By providing the locking means 45, the following effects are achieved. That is, after the support shaft mechanism 5 is inserted into the inner circumference of the holding portion 41 and installed, the plurality of ring-constituting portions 431 are maintained in an annular state by the locking means 45, thereby opening the lower opening of the holding portion 41. It is possible to suppress an increase in the area of the opening in , and, as a result, it is possible to more reliably prevent the support shaft mechanism 5 from falling off from the holding portion 41 . In this state, when the attachment member 4 (ring portion 43) is attached to the drain port member 2 and the pipe 3, the support shaft mechanism 5 does not fall off without paying particular attention to the fall of the support shaft mechanism 5. The attachment member 4 (the ring portion 43) can be attached while preventing this more reliably. In addition, by maintaining the plurality of ring-constituting portions 431 in an annularly connected state by the locking means 45, for example, the attachment member 4 can be arranged ( insertion) can be performed more easily. As a result, it is possible to improve the workability of attaching the attachment member 4 very effectively.

(c) Although two ring-forming portions 431 are provided in the above embodiment, three or more ring-forming portions 431 may be provided.

In the above embodiment, two holding-side slits 41s are provided, but the number of holding-side slits 41s is not limited to this. Therefore, for example, three or more holding-side slits 41s may be provided.

Furthermore, although three arm portions 42 are provided in the above embodiment, one, two, or four or more arm portions 42 may be provided.

(d) In the above-described embodiment, the ring portion 43 has a circular shape in a plan view, but the shape of the ring portion 43 may be appropriately changed according to, for example, the shape of the attachment target portion. Therefore, for example, the ring portion 43 may have an oblong shape in plan view, an elliptical shape in plan view, a rectangular shape in plan view, or a polygonal shape in plan view (for example, a hexagonal shape).

(e) In the above embodiment, the attachment member 4 (ring portion 43) is attached to the drain port member 2 and the pipe 3, but is configured to be attached to only one of the drain port member 2 and the pipe 3. You may For example, a plurality of protrusions are provided on the inner peripheral surface of the drain port member 2 at intervals along the circumferential direction of the drain port member 2, and the ring portion 43 is provided with a recess ( The attachment member 4 may be attached to the drain port member 2 by providing a recess opening at the lower end of the ring portion 43 and arranging the protrusion in the recess.

In addition, in the case of such a configuration, the drain port member 2, the pipe 3 and the attachment member 4 are not attached at the same time as in the above-described embodiment, but the drain port member 2 and the pipe 3 are attached to the bathtub. An attachment method of attaching the attachment member 4 after attaching to 100 may be employed. That is, after attaching the drain port member 2 and the pipe 3 to the bathtub 100, the attachment member 4 in which the support shaft mechanism 5 is inserted in the holding portion 41 is inserted into the inner periphery of the drain port member 2, and the protrusion is inserted into the recess. An attachment method of attaching the attachment member 4 to the drain port member 2 by arranging the portion may be employed. In the case of adopting such an attachment method, by providing the locking means 45 as described above, the insertion of the attachment member 4 into the inner periphery of the drain port member 2 becomes easier, and as a result, the attachment member 4 It is possible to further improve the workability related to the installation of the.

(f) In the above embodiment, the drain port 102 is closed when the stopper cover 6 (packing portion 62) contacts the drain port member 2. (For example, the drain port 102 may be closed when the cap 6 (the packing portion 62) contacts the bottom portion 101).

(g) In the above embodiment, the bathtub 100 is exemplified as the tank, but the tank to which the technical concept of the present invention can be applied is not limited to the bathtub. Therefore, for example, the technical concept of the present invention may be applied to tank bodies other than bathtubs, such as washbowls and kitchen sinks.

REFERENCE SIGNS LIST 1 drain plug device 4 attachment member 5 support shaft mechanism 6 plug cover 41 holding portion 41s holding side slit 42 arm portion 43 ring portion 45 locking means 52 ... Support shaft 100 ... Bathtub (tub body) 102 ... Drain port 431 ... Ring constituent part 4311 ... First constituent part 4312 ... Second constituent part.

Claims (5)

A stopper lid for opening and closing the drain port of the tank body,
a support shaft mechanism having a support shaft capable of vertically moving the plug lid by its own vertical movement;
a cylindrical holding portion that holds the support shaft mechanism on its inner periphery; a ring portion that is attached to a predetermined attachment target portion while being arranged on the inner periphery of the attachment target portion; an attachment member having an arm portion that connects the ring portions,
A drain plug device configured such that the drain port opens and closes as the plug lid moves up and down,
The holding part has a holding side slit that opens at its lower end and penetrates inside and outside,
The ring portion has a plurality of ring-constituting portions, and the plurality of ring-constituting portions are separated from each other in a natural state, while the plurality of ring-constituting portions are in a state of being attached to the attachment target portion. are arranged in a ring,
The attachment member is formed by integrally molding the holding portion, the ring portion, and the arm portion by one member, and widens the holding side slit and increases the opening area of the lower opening of the holding portion. A drain plug device characterized by being elastically deformable so as to sometimes increase the distance between said ring-constituting portions. The ring component includes a first component and a second component whose end portions are in contact with each other or close to each other when the ring is attached to the attachment target portion,
In a state in which the plurality of ring constituent portions are annularly connected, the end side portion of the second constituent portion is received by the end side portion of the first constituent portion, so that the end side portion of the second constituent portion is 2. The drain plug device according to claim 1, wherein the displacement toward the holding portion can be restricted. The first constituent portion and the second constituent portion are configured such that when the ring portion is attached to the attachment target portion, the respective end side portions thereof are overlapped along the radial direction of the ring portion. 3. The drain plug device according to claim 2, wherein: 3. The end side portion of the first component is in a state of being connected with the arm portion, or in a state of being positioned in the vicinity of the connecting portion of the first component and the arm portion. 4. The drain plug device according to 2 or 3. the attachment member has locking means capable of locking end-side portions of the plurality of ring-constituting portions;
5. The drain plug device according to any one of claims 1 to 4, wherein the locking means is configured to be able to maintain the plurality of ring-constituting portions in an annularly connected state.

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