JP7323917B2 - drain plug device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drain plug device for opening and closing a waste water inlet into which waste water from a tank body flows.

Conventionally, there has been a drain plug device capable of switching between open and closed states of a drain inlet through which water flows during draining, which is provided on the bottom side of a bath body (for example, a bathtub or a washbowl) by remotely operating the plug cover. Are known.

The drain plug device includes an actuating shaft that is reciprocally movable and has the plug lid attached to the tip thereof, a displaceable operating portion (for example, an operating button), and an actuating shaft that receives a driving force generated by the displacement of the operating portion. It is generally known to have a transmission member (for example, a wire or the like) for transmission to the plug lid. In such a drain plug device, the transmission member reciprocates as the operating portion is operated, and the operation shaft and the plug cover move up and down, thereby switching the open/closed state of the drain inlet. Further, the upper surface of the plug lid is generally curved upward and convex (see, for example, Patent Document 1).

JP 2012-154133 A

By the way, the reason why the top surface of the plug lid is turned upward to form a convex curved surface as described above is to prevent water from remaining on the top surface of the plug lid and to prevent water stains and dirt from adhering to the top surface of the plug lid. be. Therefore, in order to obtain such a function and effect, the top surface of the cap must be curved as described above, and it is difficult to adopt any other shape. In other words, if an attempt is made to obtain the effect of preventing water from remaining on the upper surface of the stopper, the degree of freedom in designing the shape of the upper surface of the stopper is inevitably low.

The present invention has been made in view of the above circumstances, and its object is to more reliably prevent water from remaining on the upper surface of the stopper, and to dramatically increase the degree of freedom regarding the shape of the upper surface of the stopper. To provide a drain plug device that can be enhanced.

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 plug lid for opening and closing a drainage inlet provided on the bottom side of the tank body and into which water flows during drainage;
an actuating shaft mechanism that is located on the back side of the plug lid when viewed from the front and that includes an actuating shaft configured to be reciprocatable,
A drain plug device capable of switching between open and closed states of the drain inlet by moving the plug lid with reciprocating movement of the operating shaft,
Having a predetermined support portion and a pedestal portion fixed directly or indirectly to the tank body,
The plug lid is rotatably attached to the support portion and is configured to rotate along with the reciprocating movement of the operating shaft,
The opening/closing state of the waste water inlet is switched by rotating the plug cover with the reciprocating movement of the operating shaft, and the plug cover is inclined with respect to the horizontal direction when the waste water inlet is in the open state . It is configured to be in a state inclined to
The tank body has a bottom wall portion and a side wall portion erected from the peripheral edge of the bottom wall portion,
The plug lid is arranged on the side of the side wall, has a rotation axis extending along the width direction of the side wall, and rotates about the side opposite to the side wall as a rotation center. A drain plug device, characterized in that it is configured to be able to

In other words, "the width direction of the side wall" means the direction in which the side wall extends in plan view (when viewed from above). In addition, "the stopper is arranged on the side of the side wall" means that the stopper (especially the part closest to the side wall) is in the vicinity of the side wall (for example, within 30 mm, more preferably 20 mm or less, more preferably 10 mm or less), and the case where the stopper is provided from the bottom wall portion to the side wall portion. Furthermore, the portion of the side wall that is continuous with the bottom wall may have a curved shape that gradually rises from the bottom wall.

According to the above means 1, the plug cover rotates with the reciprocating movement of the operating shaft, and when the drain inlet is open , the plug cover is inclined with respect to the horizontal direction. is configured as Since the cap is tilted obliquely to the horizontal direction, the water adhering to the top surface of the cap flows down along the top surface of the cap, thereby more reliably preventing water from remaining on the top surface of the cap. can do. As a result, it is possible to more reliably prevent water stains and dirt from adhering to the upper surface of the plug lid, and to improve the appearance and hygiene.

Moreover, according to the above-described means 1, it is not necessary to form the upper surface of the plug lid into a convex curved surface in order to prevent water from remaining on the upper surface of the plug lid. Furthermore, since the stopper lid is rotated by the operating shaft arranged on the back side of the stopper lid, the structure for rotating the stopper lid does not affect the shape of the upper surface of the stopper lid. As a result, the degree of freedom regarding the shape of the upper surface of the plug lid can be dramatically increased.

In addition, according to the above means 1, the stopper is arranged on the side wall. Therefore, the plug lid can be kept in a state in which it is difficult for the user to get in the way. In addition, it becomes possible to obtain a more excellent appearance. Furthermore, when the bath body is a bathtub, it is possible to more reliably prevent the stopper from being stepped on. can be prevented more reliably.

Further, according to the above-described means 1, the plug lid has its rotation axis extending along the width direction of the side wall portion and rotates about the side opposite to the side wall portion as the center of rotation. ing. Therefore, when viewed from the center side of the bottom wall of the tank body, the drain inlet and its surroundings are hidden by the plug lid regardless of whether the drain inlet is open or closed. be able to. As a result, it is possible to make it difficult for the user to visually recognize the portion where the drainage inlet is formed and the surrounding portion to which dirt and the like are likely to adhere, thereby further improving the appearance.

Means 2. The upper surface of the plug lid has a flat surface shape or a downwardly convex curved surface shape,
When the drain inlet is in a closed state, the plug lid is accommodated in a depression-shaped recess provided in the tank body, and a continuous surface extends from the surface of the tank body to the top surface of the plug lid. 1. The drain plug device according to claim 1, wherein the drain plug device is configured to form a shape.

It should be noted that "a continuous surface from the surface of the tank body to the top surface of the plug cover" is not limited to the case where the surface is strictly continuous, but also that there is a slight gap between the surface of the tank body and the top surface of the plug cover. This includes cases where there are steps, dents, etc., and both surfaces are almost continuous surfaces.

According to the above means 2, the upper surface of the plug lid is flat or curved downward, and when the drain inlet is closed, the plug lid is accommodated in the concave portion of the tank body. It is configured to form a continuous surface from the upper surface of the lid to the surface of the tank body. Therefore, compared with the conventional case where the upper surface of the stopper is curved upward, the portion from the upper surface of the stopper to the surface of the tank body is made smoother with almost no unevenness. be able to. This makes it possible to obtain a very good aesthetic appearance.

In addition, since there is almost no unevenness from the upper surface of the cap to the surface of the tank body, the safety for the user can be enhanced. In addition, it is possible to more effectively suppress the adhesion of dirt and limescale on the area from the top surface of the stopper lid to the surface of the tank body, and even if dirt etc. adheres, it is easy to remove the adhered dirt etc. It becomes possible to go to

By using the configuration of the above means 1, it is possible to adopt, as the top surface shape of the plug lid, a shape that is conventionally difficult to adopt, such as a flat surface shape or a downwardly convex curved surface shape, without any problem.

Means 3. The drainage inlet is located in a recessed recess provided in the tank body ,
When the drain inlet is in the open state, the lowermost portion of the upper surface of the plug lid along the inclination direction of the plug lid is arranged in the recess or vertically above the recess. The drain plug device according to means 1 or 2, characterized in that

Incidentally, in the case where the means 3 is subordinate to the means 2, the "recesses" refer to the same thing.

According to the above means 3, when the drainage inlet is in the open state, the lowest part of the upper surface of the plug lid along the inclination direction of the plug lid is arranged in the recess or vertically above the recess. It is Therefore, when the drain inlet is in the open state, the water adhering to the upper surface of the plug lid and flowing down along the upper surface can be more reliably guided into the recess. As a result, it is possible to prevent the water that has flowed down from the upper surface of the plug lid from adhering to the area around the recess on the surface of the tank body and causing water stains and stains, thereby obtaining better aesthetics and sanitation.

Means 4 . A drain port member inserted into a mounting hole formed through the tank body and to which the pedestal is mounted,
The drain port member is
a tubular main body having an end opening constituting the drainage inlet;
and a collar projecting outward from the upper end of the main body,
In a cross section that passes through the internal space of the main body and is perpendicular to the rotation axis of the plug lid, the amount of protrusion of the collar with respect to the outer peripheral portion of the main body is larger than that on the side opposite to the side wall. 4. The drain plug device according to any one of means 1 to 3, characterized in that the side wall side is configured to be smaller.

According to the means 4 , the drain port member is constructed such that the amount of protrusion of the flange with respect to the outer peripheral portion of the main body is relatively small on the side wall portion side. Therefore, it is possible to install the drain port member, and thus the pedestal and the stopper, in a state of being closer to the side wall. As a result, the function and effect of arranging the stopper on the side wall can be exhibited more reliably and effectively.

Means 5 . The plug lid is configured to be attachable to and detachable from the support,
5. The drain plug device according to any one of means 1 to 4 , wherein the plug lid can be removed from the support portion by moving the plug lid toward the side wall portion.

According to the means 5 , the stopper can be freely attached to and detached from the supporting portion, so that it is possible to improve the workability and convenience of cleaning and maintenance, for example.

Further, according to the above means 5 , the plug lid can be removed from the support portion by moving it toward the side wall portion. Here, when the stopper is configured to be detachable from the supporting portion by moving the stopper to the side opposite to the side wall portion, an "object" (for example, a shower A hose, a cable for a dryer, etc.) may be caught and pulled to the opposite side of the side wall, causing the stopper to unintentionally come off from the support. On the other hand, according to the means 5 , even if the "thing" is caught on the back surface of the plug lid and the "thing" is pulled to the opposite side of the side wall portion, the plug lid can be removed from the supporting portion. Such a situation does not normally occur. Therefore, unintended detachment of the plug lid can be more reliably prevented, and usability can be improved.

Means 6 . The operating shaft mechanism alternately holds the operating shaft at a predetermined upper position and holds the operating shaft at a predetermined lower position by pushing against the upper surface of the plug lid. The drain plug device according to any one of means 1 to 5 , characterized in that it is configured to be able to

According to the above means 6 , by pushing the upper surface of the plug lid (by pushing it by hand or stepping on it lightly), the operating shaft can be moved up and down to switch the opening/closing state of the drainage inlet. In switching the open/closed state of the drain inlet, the plug lid itself is the object of operation, which is convenient for the user.

In the above-mentioned means 6 , the upper surface of the plug cover is formed in a shape that can be easily pushed (for example, a downwardly convex curved surface). Adhesion can be prevented. In addition, since the structure of the above-described means 1 can prevent dirt from adhering to the upper surface of the stopper, even if the upper surface of the stopper is configured to be the object of operation as in the above-described means 6 , the stopper can be removed. A situation in which the user feels uncomfortable due to dirt or the like during operation is unlikely to occur. Therefore, it can be said that the configuration of the above means 1 works particularly effectively in the configuration of the above means 6 .

FIG. 10 is a perspective view of the drain plug device and the like when the drain inlet is in a closed state; It is a cross-sectional schematic diagram of a bathtub. FIG. 2 is a cross-sectional view taken along the line JJ of FIG. 1 when the drainage inlet is closed; FIG. 2 is a cross-sectional view taken along the line JJ of FIG. 1 when the drainage inlet is in an open state; FIG. 2 is a cross-sectional view taken along the line KK of FIG. 1 when the drainage inlet is in an open state; FIG. 2 is a cross-sectional view taken along the line LL in FIG. 1 when the drainage inlet is in an open state; It is sectional drawing which shows the drain plug apparatus in another embodiment.

An embodiment will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the drain plug device 1 is a device for switching whether or not to allow water to drain from a bathtub 100 as a bath body. 102 is provided. Before describing the drain plug device 1, first, the configuration of the bathtub 100 will be described.

The bottom wall portion 101 is a portion that constitutes the bottom surface of the bathtub 100, and the top surface thereof is configured to be substantially horizontal. The side wall portion 102 is a portion erected on the peripheral edge of the bottom wall portion 101, and has a curved portion that gradually rises from the bottom wall portion 101 and a shape that is continuous with the upper end of the portion and slightly inclined with respect to the vertical direction. It is equipped with a part that forms a

Furthermore, as shown in FIG. 3 , in the portion from the bottom wall portion 101 to the side wall portion 102 (the portion gradually rising from the bottom wall portion 101 ) of the bathtub 100 , a substantially vertical hanging portion 103 and the hanging portion 103 are provided. An inner brim-shaped protruding portion 104 protruding inward from the lower end portion of the portion 103 is provided. The space surrounded by the drooping portion 103 forms a recessed portion 105 in a portion from the bottom wall portion 101 to the side wall portion 102 of the bathtub 100 . In this embodiment, the shape of the concave portion 105 when viewed from above has two parallel long sides extending in the horizontal direction and two parallel short sides connecting the ends of the two long sides. It has the same shape as the rounded rectangle provided. The lateral direction refers to the width direction of the side wall portion 102 (that is, the direction in which the side wall portion 102 extends in plan view) (see FIG. 1).

A pair of hole portions 104a for screwing and fixing the drain port member 2, which will be described later, are formed through the projecting portion 104 (see FIG. 6). Furthermore, an attachment hole 106 that penetrates the bathtub 100 is formed on the inner periphery of the projecting portion 104 . In this embodiment, the shape of the mounting hole 106 when viewed from above is an elliptical shape (having two parallel side portions extending in the horizontal direction and curved portions connecting the respective ends of these side portions). shape).

Next, the drain plug device 1 will be described. The drain plug device 1 includes a drain port member 2, a pipe 3, an operating shaft mechanism 4, a pedestal 5 and a plug lid 6, as shown in FIGS. 3 is a cross-sectional view taken along line JJ in FIG. 1 when the waste water inlet 21, which will be described later, is closed, and FIG. 4 is a J in FIG. 1 when the waste water inlet 21 is open. -J line sectional view. 5 is a cross-sectional view taken along line KK of FIG. 1 when the waste water inlet 21 is opened, and FIG. 6 is a cross-sectional view taken along the line LL of FIG. 1 when the waste water inlet 21 is opened. It is a line sectional view.

The drain port member 2 is a cylindrical component installed while being inserted into the mounting hole 106 . The internal space of the drain port member 2 constitutes a flow path for water discharged from the bathtub 100, and the opening at the upper end of the inner circumference of the drain port member 2 allows water to flow into the drain when draining water from the bathtub 100. An inlet 21 is formed. The drainage inlet 21 is provided in the concave portion 105, and when viewed from the front (in this embodiment, when viewed from above), it has a horizontally long shape that is longer in the horizontal direction than in the vertical direction (in this embodiment, oval shape). That is, the drainage inlet 21 has a laterally long shape extending along the width direction of the side wall portion 102 .

Moreover, the drain port member 2 includes a body portion 22 and a flange portion 23 . The body portion 22 has a laterally long cylindrical shape corresponding to the shape of the mounting hole 106 . That is, the body portion 22 has a shape including two relatively long parallel long plate-like portions extending in the lateral direction and facing each other, and a curved plate-like portion connecting the ends of these long plate-like portions. It's becoming

The flange portion 23 protrudes outward from the upper end portion of the main body portion 22 , and the outer edge portion thereof has a rounded rectangular shape that is one size smaller than the inner peripheral shape of the drooping portion 103 . Further, through holes 23a (see FIG. 6) are formed in respective portions of the collar portion 23 corresponding to the hole portions 104a.

Furthermore, in a cross section passing through the internal space of the main body 22 and perpendicular to the later-described rotation axis RA of the plug lid 6, the protrusion amount of the flange 23 with respect to the outer peripheral portion of the main body 22 is opposite to that of the side wall 102. It is configured to be smaller on the side wall portion 102 side than on the side (see FIGS. 3 to 5). That is, the flange portion 23 in the present embodiment has a shape having two relatively long parallel long side portions extending along the width direction of the side wall portion 102 when viewed from above. is smaller than the width of the long side portion located on the side opposite to the side wall portion 102 .

The pipe 3 has a cylindrical shape, and is a part that constitutes, together with the drain port member 2, a flow path for the waste water that flows through the waste water inlet 21. As shown in FIG. In one end face of the pipe 3, a recessed screw hole portion 31 (see FIG. 6) having a female screw portion on the inner circumference is formed in each portion corresponding to the hole portion 104a. Then, with the drain port member 2 inserted into the mounting hole 106 and the piping 3, a predetermined screw 8 (see FIG. 6) having a male thread on the outer periphery is screwed into the threaded hole portion 31 through the through hole 23a and the hole portion 104a. By sandwiching the protruding portion 104 between the flange portion 23 and the upper end surface of the pipe 3, the drain port member 2 and the pipe 3 are connected and both are attached to the bathtub 100. there is

In this embodiment, an annular seal member 9 made of an elastically deformable material (for example, resin, rubber, etc.) is arranged between the upper surface of the projecting portion 104 and the flange portion 23 . Also, between the upper end surface of the pipe 3 and the lower surface of the protruding portion 104, an annular sealing member 10 made of an elastically deformable material is arranged. These sealing members 9 and 10 prevent water from leaking from between the drain port member 2 and the pipe 3 and the bathtub 100 . These seal members 9 and 10 also have holes at locations corresponding to the hole portions 104a.

The operating shaft mechanism 4 is arranged inside the drain port member 2 and the pipe 3 (that is, the drain channel), and has a function of moving the cap 6 . The operating shaft mechanism 4 includes a case portion 41 , an operating shaft 42 , a rotating ring 43 and a biasing portion 44 .

The case portion 41 is a component for installing the operating shaft 42 on the back side of the stopper lid 6 by attaching it to the inner circumference of the drain port member 2 while holding the operating shaft 42 and the biasing portion 44 . The case portion 41 includes an outer ring portion 41a, a connecting portion 41b, a holding portion 41c, and a closing portion 41d.

The outer ring portion 41 a is a portion that functions as a mounting portion for the operating shaft mechanism 4 to the drain port member 2 . The outer annular portion 41a has an elongated cylindrical shape corresponding to the inner peripheral shape of the drain port member 2 (main body portion 22), and is composed of two laterally extending portions that face each other with a holding portion 41c interposed therebetween. It has a shape with a long plate-like portion. In this embodiment, the operating shaft mechanism 4 is attached to the drain port member 2 by placing the outer ring portion 41a on a stepped portion provided on the inner peripheral surface of the drain port member 2 or the like. ing. The outer annular portion 41a may be configured to be attached to the inner side of the pipe 3, or may be configured to be attached to the inner portion of the pipe 3 from the drain port member 2. As shown in FIG.

The connecting portion 41b is a portion that connects the inner peripheral surface of the outer ring portion 41a and the outer peripheral surface of the holding portion 41c. In this embodiment, two connecting portions 41b are provided so as to connect each of the long plate-like portions of the outer annular portion 41a and the outer peripheral surface of the holding portion 41c. Incidentally, the number of connecting portions 41b, the forming position thereof, and the like can be changed as appropriate.

The holding portion 41 c and the closing portion 41 d are for holding the operating shaft 42 and the biasing portion 44 . The holding portion 41c and the closing portion 41d are cylindrical, respectively, and the closing portion 41d is inserted into the holding portion 41c so as to close the lower end opening of the holding portion 41c.

Engagement teeth 41e (see FIGS. 3 and 4) are provided on the inner periphery of the holding portion 41c, and guide teeth 41f are provided on the inner periphery of the closing portion 41d. The engagement tooth 41e and the guide tooth 41f are opposed to each other along the axial direction of the holding portion 41c.

The engaging teeth 41e have a ridge shape extending along the axial direction of the holding portion 41c, and are provided in plurality at equal intervals along the circumferential direction of the holding portion 41c. A tip portion (lower end portion) of the engaging tooth 41e is provided with an engaged portion with which the rotating ring 43 (more specifically, the engaged tooth described later of the rotating ring 43) is engaged. A groove extending along the axial direction of the holding portion 41c is formed between the adjacent engaging teeth 41e.

A plurality of guide teeth 41f are provided at regular intervals along the circumferential direction of the closing portion 41d. The guide tooth 41f has a predetermined slanted surface and has a role of rotating the rotating ring 43 in contact with the slanted surface in a predetermined direction.

The actuating shaft 42 is located on the back side of the plug lid 6 when the plug lid 6 is viewed from the front (when the plug lid 6 is viewed from a position facing its upper surface), and is reciprocally moved to move the plug lid 6. to move. The operating shaft 42 has a columnar shape and is inserted into the inner circumferences of the holding portion 41c and the closing portion 41d in a state in which it can reciprocate in the vertical direction. The operating shaft 42 in this embodiment is configured by connecting two rod-shaped parts in series. More specifically, a threaded part (not shown) is screwed into each threaded hole formed in the center of the end face of each rod-like part, thereby connecting the rod-like parts to form the operating shaft 42 . Of course, the operating shaft 42 may be constructed from one component.

The rotating ring 43 has an annular shape, is arranged in a rotatable state on the outer circumference of the operating shaft 42, and reciprocates together with the operating shaft 42 when the operating shaft 42 reciprocates. there is Further, the rotating ring 43 has a plurality of outwardly protruding engaged teeth on its outer peripheral surface. The engaged teeth are provided at regular intervals along the circumferential direction of the rotating ring 43 .

The biasing portion 44 is provided in the holding portion 41c and the closing portion 41d, and is for applying a biasing force to the operating shaft 42 along its forward (upward) direction. The urging portion 44 is configured by, for example, an elastically deformable spring, and is installed in a compressed and deformed state sandwiched between the operating shaft 42 and the closing portion 41d.

The operating shaft mechanism 4 configured as described above holds the operating shaft 42 at a predetermined upper position and the operating shaft 42 at a predetermined lower position by pushing against the upper surface of the plug lid 6. It is possible to alternate between

More specifically, a downward force is applied to the operating shaft 42 by pushing the plug lid 6 against the upper surface, and the operating shaft 42 is positioned at the upper position (as shown in FIGS. 4 to 6). When the upper surface of the stopper lid 6 is pushed while the drain inlet 21 is open, the operating shaft 42 moves back (moves downward), and the engaged teeth of the rotary ring 43 move to the guide teeth 41f. The rotary ring 43 is slightly rotated by sliding on the guide tooth 41f while coming into contact with it. At this time, along the circumferential direction of the rotating ring 43, the engaged tooth of the rotating ring 43 and the engaged portion of the engaging tooth 41e are substantially aligned.

In this state, the stopper lid 6 is released from being pushed, and when the operating shaft 42 and the rotating ring 43 move forward (upward) due to the biasing force from the biasing portion 44, the engaged teeth of the rotating ring 43 are engaged. It will be in the state engaged with the to-be-engaged part of the coupling tooth 41e. As a result, the operating shaft 42 is held (locked) at the lower position.

On the other hand, when the upper surface of the stopper lid 6 is pushed in the state where the operating shaft 42 is arranged at the lower position (the state shown in FIG. 3 and the drain inlet 21 is closed), the operating shaft 42 is moved. When the rotary ring 43 is slightly moved back (downward), the engaged tooth of the rotary ring 43 slides on the guide tooth 41f while contacting the guide tooth 41f, and the rotary ring 43 rotates slightly. At this time, along the circumferential direction of the rotating ring 43, the positions of the engaged teeth of the rotating ring 43 and the grooves formed between the adjacent engaging teeth 41e are substantially aligned.

In this state, when the stopper lid 6 is released from being pushed, and the operating shaft 42 and the rotating ring 43 move forward (upward) due to the biasing force from the biasing portion 44, the engaged teeth of the rotating ring 43 are adjacent to each other. By entering the grooves formed between the engaging teeth 41e, the operating shaft 42 moves forward (moves upward) to the upper position. As a result, the operating shaft 42 is held at the upper position.

Next, the pedestal portion 5 and the stopper lid 6 will be described. The base portion 5 is a component for supporting the stopper lid 6 in a rotatable state. The pedestal portion 5 in the present embodiment has a rectangular ring shape with rounded corners corresponding to the shape of the flange portion 23 of the drain port member 2 as a whole. That is, when viewed from above, the pedestal portion 5 has two relatively long parallel long side portions extending along the width direction of the side wall portion 102 and two relatively short parallel side portions substantially orthogonal to the long side portions. It has parallel short side portions, and ends of these long side portions and short side portions are connected to each other by curved portions.

Moreover, the pedestal portion 5 is in a state of being attached to the drain port member 2 . In other words, the pedestal portion 5 is indirectly fixed to the bathtub 100 . Although the mounting method of the drain port member 2 to the pedestal portion 5 is not particularly limited, for example, a convex portion protruding inward is provided at a portion of the pedestal portion 5 that is arranged on the outer peripheral side of the collar portion 23. The pedestal portion 5 can be attached to the drain port member 2 by inserting the convex portion into the concave portion provided on the outer periphery of the flange portion 23 . In this embodiment, the pedestal portion 5 covers the screw 8 and is provided between the flange portion 23 and the drooping portion 103 in order to improve the appearance.

Further, a support portion 51 (see FIG. 5) is provided on the upper surface of the pedestal portion 5 for supporting a rotation shaft portion 61a of the stopper lid 6, which will be described later. The supporting portion 51 is provided on the opposite side of the side wall portion 102 of the pedestal portion 5, that is, on the opposite side of the side wall portion 102 of the two long side portions constituting the pedestal portion 5 described above (in other words, on the side opposite to the side wall portion 101 of the bottom wall portion 101). center side). Further, the support portions 51 are formed to protrude from the upper surfaces of the long side portions, and a plurality (for example, two) of the support portions 51 are provided at intervals along the direction in which the long side portions extend. Further, each support portion 51 has a cutout portion located on the side wall portion 102 side (facing the side wall portion 102 side), thereby forming a partially interrupted annular shape. , and can be freely attached to and removed from the support portion 51 through the notch portion.

The plug lid 6 is a plug for opening and closing the drainage inlet 21, and has a horizontally long shape (in this embodiment, a rectangular shape with rounded corners in plan view) corresponding to the shape of the drainage inlet 21 (see FIG. 1). The stopper lid 6 is positioned on the side wall portion 102 side and arranged corresponding to the recessed portion 105 (within the recessed portion 105 in this embodiment). Furthermore, the entirety thereof is accommodated within the recess 105 . The plug lid 6 is composed of a flat plug lid main body 61 made of, for example, resin, and an elastically deformable material (eg, rubber, resin, etc.) attached to the outer edge side of the back surface of the plug lid main body 61. It has a packing portion 62 that is formed as follows.

The plug lid main body 61 has, on its back side, a columnar rotating shaft 61a (see FIG. 5) extending along the width direction of the side wall 102, and the rotating shaft 61a serves as a support portion. It is attached to 51 in a rotatable state. That is, the plug lid 6 is attached to the support portion 51 in a rotatable state. As a result, the plug lid 6 has its rotation axis RA extending along the width direction (horizontal direction) of the side wall portion 102, and the side opposite to the side wall portion 102 (the center side of the bottom wall portion 101) as the center of rotation. It is possible to rotate as

Further, as described above, the rotating shaft portion 61a is configured to be attachable to and detachable from the support portion 51 through the notch portion of the support portion 51. By moving the body portion 61 ) toward the side wall portion 102 , the rotating shaft portion 61 a and thus the stopper lid 6 can be removed from the support portion 51 .

Furthermore, the tip of the operating shaft 42 can come into contact with the central region of the back surface of the plug lid main body 61 , and the plug lid 6 rotates and displaces with respect to the bathtub 100 as the operating shaft 42 reciprocates. It's like

In this embodiment, when the operating shaft 42 is arranged at the upper position, the operating shaft 42 is held at the lower position while pushing the upper surface of the plug lid 6 to rotate the plug lid 6. In the (locked) state, the stopper lid 6 is rotated by gravity, and the entire outer peripheral portion of the packing portion 62 comes into contact with the drain port member 2, and as a result, the drain inlet 21 is closed. (See Figure 3). On the other hand, in this state, when the upper surface of the cap 6 is pushed to unlock the operating shaft 42, the biasing force from the biasing portion 44 causes the cap 6 to rotate and the operating shaft 42 to move to the upper position. Further, the packing part 62 is separated from the drain port member 2, and as a result, the drain inlet 21 is opened (see FIGS. 4 to 6). As described above, the drain plug device 1 according to the present embodiment has a structure (so-called direct push) in which the plug cover 6 moves and the drain inlet 21 is alternately opened and closed each time the upper surface of the plug cover 6 is pushed. ing. Incidentally, when the drain inlet 21 is in the open state, the portion of the stopper lid 6 opposite to the rotation axis RA comes out of the concave portion 105 .

Further, as described above, the open/closed state of the drainage inlet 21 is switched by turning the plug lid 6. In the present embodiment, the plug lid 6 is moved horizontally when the drainage inlet 21 is in the open state. It is configured so as to be obliquely inclined (more specifically, the upper surface of the stopper lid 6 is obliquely inclined in the same direction with respect to the horizontal direction).

In addition, the upper surface of the plug lid 6 (plug lid body portion 61) is formed into a downwardly convex curved surface so as to correspond to the curved shape from the bottom wall portion 101 to the side wall portion 102. As shown in FIG. When the drain inlet 21 is closed, the plug lid 6 is accommodated in the recess 105, and the surface of the bathtub 100 (in this embodiment, the surfaces of the bottom wall 101 and the side wall 102). It forms a continuous surface from the top surface of the plug lid 6 (plug lid body portion 61) (see FIG. 3). Note that the term "form a continuous surface" is not limited to the case where the surface is strictly continuous, but the distance between the surface of the bathtub 100 and the top surface of the plug cover 6 is about several millimeters (for example, about 2 to 3 mm or less). ), there are steps, dents, gaps, etc., and both sides are almost continuous surfaces.

Furthermore, when the drain inlet 21 is in the open state, the lowermost portion of the top surface of the plug lid 6 (plug lid body portion 61) along the inclination direction of the plug lid 6 is arranged in the recess 105. (See FIGS. 4 and 5).

As described in detail above, according to this embodiment, when the drain inlet 21 is in the open state, the stopper lid 6 is inclined with respect to the horizontal direction. As a result, the water adhering to the top surface of the plug lid 6 runs down along the top surface, so that water remaining on the top surface of the plug lid 6 can be more reliably prevented. As a result, it is possible to more reliably prevent water stains and stains from adhering to the upper surface of the stopper lid 6, thereby improving the appearance and sanitation.

Further, according to the present embodiment, it is not necessary to form the top surface of the plug lid 6 into an upwardly curved curved surface in order to prevent water from remaining on the top surface of the plug lid 6 . Furthermore, since the stopper lid 6 is rotated by the operating shaft 42 arranged on the back side of the stopper lid 6 , the structure for rotating the stopper lid 6 does not affect the top surface shape of the stopper lid 6 . As a result, the degree of freedom regarding the shape of the upper surface of the cap 6 can be dramatically increased.

Further, the upper surface of the plug lid 6 is formed into a curved surface that protrudes downward, and when the drain inlet 21 is closed, the plug lid 6 is accommodated in the recess 105 so that the bathtub 100 can be seen from the top surface of the plug lid 6. It becomes a continuous surface over the surface. Therefore, compared to the conventional case where the upper surface of the stopper lid is curved upward, the portion from the upper surface of the stopper lid 6 to the surface of the bathtub 100 is smoother and has almost no unevenness. can do. This makes it possible to obtain a very good aesthetic appearance.

In addition, since there is almost no unevenness from the upper surface of the stopper lid 6 to the surface of the bathtub 100, the safety for the user can be enhanced. Furthermore, it is possible to more effectively suppress the adhesion of dirt and limescale on the portion from the upper surface of the stopper lid 6 to the surface of the bathtub 100, and even if dirt etc. adheres, the adhered dirt etc. can be removed. This can be done easily.

In addition, when the drain inlet 21 is open, the lowermost portion of the upper surface of the plug lid 6 along the direction of inclination of the plug lid 6 is arranged in the recess 105 . Therefore, when the drain inlet 21 is open, the water adhering to the upper surface of the plug lid 6 and flowing down along the upper surface can be guided into the recess 105 more reliably. As a result, it is possible to prevent the water that has flowed down from the upper surface of the stopper lid 6 from adhering to the area around the recess 105 on the surface of the bathtub 100 and causing water stains and stains, thereby obtaining better aesthetics and sanitation. .

In addition, since the plug lid 6 is arranged on the side wall portion 102 side, the plug lid 6 can be in a state where it is difficult for the user to get in the way. It is convenient when placing a container, etc.). In addition, it becomes possible to obtain a more excellent appearance. Further, it is possible to more reliably prevent the stopper 6 from being stepped on, and to more reliably prevent the stopper 6 from being damaged or deformed by being stepped on, and the user's feeling of discomfort due to the stepping on.

In addition, the stopper lid 6 has its rotation axis RA extending along the width direction of the side wall portion 102 and is rotated around the side opposite to the side wall portion 102 as the center of rotation. . Therefore, when viewed from the central side of the bottom wall portion 101 of the bathtub 100, the drain inlet 21 and its peripheral portion are hidden by the plug cover 6 regardless of whether the drain inlet 21 is open or closed. state. As a result, it is possible to make it difficult for the user to visually recognize the formation portion of the drainage inlet 21 and its peripheral portion to which dirt and the like are likely to adhere, thereby further improving the appearance.

In addition, in this embodiment, the drain port member 2 is configured such that the protrusion amount of the flange portion 23 with respect to the outer peripheral portion of the main body portion 22 is relatively small on the side wall portion 102 side. Therefore, it is possible to install the drain port member 2, as well as the pedestal portion 5 and the stopper lid 6, in a state of being closer to the side wall portion 102 side. As a result, it is possible to more reliably and effectively exhibit the above-described effects by arranging the plug lid 6 on the side wall portion 102 side.

Furthermore, since the plug lid 6 can be freely attached to and removed from the support portion 51, it is possible to improve the workability and convenience of cleaning, maintenance, and the like.

Further, the stopper lid 6 can be removed from the support portion 51 by moving it toward the side wall portion 102 side. Here, when the plug lid 6 is configured to be removable from the support portion 51 by moving the plug lid 6 to the side opposite to the side wall portion 102, the rear surface of the obliquely tilted plug lid 6 has a " If an object (for example, a shower hose, a cable for a dryer, etc.) is caught and pulled to the side opposite to the side wall portion 102, the plug lid 6 may be unintentionally removed from the support portion 51. It may come off. On the other hand, in the present embodiment, even if an "object" is caught on the back surface of the plug lid 6 and the "object" is pulled to the opposite side of the side wall portion 102, the plug lid 6 will not be removed from the support portion 51. A situation in which a is detached does not normally occur. Therefore, unintended detachment of the plug lid 6 can be more reliably prevented, and usability can be improved.

In addition, in this embodiment, by pushing the top surface of the stopper lid 6 (by pushing it by hand or stepping on it lightly), the operating shaft 42 can be moved up and down to switch the open/closed state of the drainage inlet 21 . can. When switching the open/closed state of the drain inlet 21, the plug lid 6 itself is the object of operation, which is convenient for the user.

In addition, in this embodiment, since the top surface of the plug lid 6 has a downwardly convex curved surface shape, the top surface of the plug lid 6 can be easily pushed. Furthermore, since it is possible to prevent dirt from adhering to the upper surface of the stopper lid 6, even if the upper surface of the stopper lid 6 is configured to be operated as in the present embodiment, the operation of the stopper lid 6 can be performed. It is possible to make it more difficult for the user to sometimes feel uncomfortable due to dirt or the like.

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, the pedestal part 5 is indirectly fixed to the bathtub 100 by being attached to the drain port member 2. can be configured to

(b) In the above-described embodiment, when the waste water inlet 21 is open, the stopper lid 6 is inclined with respect to the horizontal direction. The plug lid 6 may be configured to be in this state when . Of course, the plug lid 6 may be configured to be inclined with respect to the horizontal direction both when the waste water inlet 21 is in the open state and when the waste water inlet 21 is in the closed state. Good (but only for reference) .

(c) In order to more reliably ensure the drainage capacity when the drainage inlet 21 is opened, at least when the drainage inlet 21 is opened, the outer edge of the plug lid 6 (plug lid 61) (for example, , the outer edge located on the side of the rotation axis RA) and the portion of the bathtub 100 where the concave portion 105 is formed, a relatively large gap may be formed.

(d) In the above embodiment, when the drainage inlet 21 is in the open state, the lowest part of the upper surface of the plug lid 6 (plug lid body portion 61) along the inclination direction of the plug lid 6 is inside the recess 105. However, the lowermost part may be arranged vertically above the recess 105 when the drainage inlet 21 is in the open state. Even in this case, the water adhering to the upper surface of the stopper lid 6 and running down along the upper surface can be more reliably guided into the recess 105, and as a result, better aesthetics and sanitation can be obtained. be able to.

Further, in the above-described embodiment, the bathtub 100 is provided with the relatively deep recess 105 capable of accommodating the plug lid 6. However, the recess 105 is made relatively shallow so that the upper surface of the stopper lid 6 is above the surface of the bathtub 100. It may be configured to protrude into the Of course, the bathtub 100 may be configured without the concave portion 105 .

(e) In the above embodiment, the drain port member 2 and the pedestal portion 5 are separated, but the drain port member and the pedestal portion may be integrated. That is, it is also possible to use one component in which the drain port member and the pedestal are integrated. For example, by providing a portion corresponding to the support portion 51 on the upper surface of the drain port member 2 in the above embodiment, the pedestal portion may be integrated with the drain port member.

(f) In the above embodiment, the support portion 51 has a substantially annular shape, and the rotation shaft portion 61a of the cap 6 is attached to the support portion 51. In addition, the plug lid 6 may be provided with a substantially annular portion to which the rod-like support is attached. In other words, the plug lid 6 may be provided with a substantially annular portion corresponding to the support portion 51 in the above embodiment, and the base portion 5 may be provided with a rod-like portion corresponding to the rotating shaft portion 61a in the above embodiment. In this case, the rod-shaped portion provided on the base portion 5 corresponds to the support portion.

(g) In the above embodiment, the plug lid 6 can be rotated around the side opposite to the side wall portion 102 (the center side of the bottom wall portion 101). It may be changed as appropriate. For example, the plug lid 6 may be configured to be rotatable around the side wall portion 102 side (reference example) .

(h) In the above embodiment, the drain port 21 is closed when the plug lid 6 (the packing portion 62) contacts the drain port member 2. 5 or the bathtub 100, the drainage inlet 21 may be closed.

(i) The drain plug device 1 in the above embodiment has a structure (so-called direct push) in which the opening/closing state of the drain inlet 21 is switched by pushing the plug cover 6, but this structure is not necessarily required. no. Therefore, for example, as shown in FIG. 7, a transmission member 71a (such as a wire) for transmitting a driving force due to displacement of an operation unit (such as an operation button or an operation handle) that is displaceable with respect to the bathtub 100. , an operating shaft 71b that can move up and down by the driving force transmitted by the transmission member 71a, and a cylindrical portion 71c that holds the operating shaft 71b in a reciprocating state on its inner circumference. A driving mechanism 71 may be provided, and by operating and displacing the operation portion, the transmission member 71a and the operating shaft 71b may be moved, and the opening/closing state of the drainage inlet 21 may be switched.

(j) In the above embodiment, the operating shaft mechanism 4 has the function of moving the plug lid 6 by the operating shaft 42 and the function of installing the operating shaft 42 on the back side of the plug lid 6. The operating shaft mechanism 4 may be constructed by combining separate parts. For example, as shown in FIG. 7, by holding a driving mechanism 71 having a function of moving the plug lid 6 with an operating shaft 71b and the driving mechanism 71 (cylindrical portion 71c), the stopper lid 6 can be operated on the back side. The attachment member 72 having the function of installing the shaft 71 b may be configured as separate parts, and the operating shaft mechanism 7 may be configured by combining the drive mechanism 71 and the attachment member 72 .

(k) In the above embodiment, the upper surface of the plug lid 6 (the plug lid body portion 61) has a downwardly convex curved surface shape. On the other hand, when the drain plug device 1 is provided on the bottom wall portion 101 as shown in FIG. By making the upper surface of the lid body portion 61) flat, when the drain inlet 21 is closed, the plug lid 6 is accommodated in the recess 105, and the bathtub 100 (bottom wall portion 101) to the upper surface of the plug lid 6 (plug lid main body 61).

(l) In the above embodiment, the mounting hole 106 has an oval shape in plan view, and the drain member 2 (main body portion 22) has a shape that matches the shape of the mounting hole 106. The shape of the attachment hole 106 may be changed as appropriate, and the shape of the drain port member 2 may be changed in accordance with the change in the shape of the attachment hole 106 . Therefore, for example, the attachment hole 106 may be rectangular in plan view (including a rectangular shape with rounded corners), and the drain port member 2 (body portion 22) may be rectangular cylindrical in accordance with this shape.

Also, the shape of the drainage inlet 21 may be changed as appropriate, and may be, for example, circular, rectangular, polygonal, or the like.

Further, the shapes of the recessed portion 105 and the cap 6 can also be changed as appropriate, and for example, these shapes may be circular or oval in plan view.

(m) In the above embodiment, the plug lid 6 is provided from the bottom wall portion 101 to the side wall portion 102. However, the plug lid 6 is provided only on the bottom wall portion 101 (without covering the side wall portion 102). good too. Further, in this case, the plug lid 6 may be provided on the side wall portion 102 side (as if it is close to the side wall portion 102).

(n) In order to enhance the sense of unity between the upper surface of the plug lid 6 and the surface of the bathtub 100, the upper surface color of the stopper lid 6 and the surface color of the bathtub 100 may be the same.

(o) In the above embodiment, the drainage inlet 21 is formed by the inner peripheral opening of the drainage port member 2. However, for example, when the drainage port member 2 is not provided, a hole formed through the bathtub 100 ( For example, a hole (such as mounting hole 106) may constitute a wastewater inlet. Alternatively, the inner opening of the base portion 5 may constitute the drainage inlet.

(p) In the above embodiment, the upper end of the operating shaft 42 is configured to simply contact the plug lid 6, but by fitting the upper end of the operating shaft 42 to the plug lid 6, for example, the operating shaft It may be constructed such that the cap 6 is attached to the upper end of 42 . In this case, the retracting force due to the return movement (downward movement) of the operating shaft 42 is applied to the stopper lid 6, so that when the drainage inlet 21 is closed, the packing portion 62 is not attached to the drainage port member 2. can be pressed more strongly to obtain better water stoppage.

(q) 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.

DESCRIPTION OF SYMBOLS 1... Drain plug device, 2... Drain port member, 4, 7... Actuating shaft mechanism, 5... Base part, 6... Plug cover, 21... Drainage inlet, 22... Main body part, 23... Collar part, 42... Actuating shaft , 51... Support part 100... Bathtub (tub body) 101... Bottom wall part 102... Side wall part 105... Recessed part 106... Mounting hole.

Claims (6)

a plug lid for opening and closing a drainage inlet provided on the bottom side of the tank body and into which water flows during drainage;
an actuating shaft mechanism that is located on the back side of the plug lid when viewed from the front and that includes an actuating shaft configured to be reciprocatable,
A drain plug device capable of switching between open and closed states of the drain inlet by moving the plug lid with reciprocating movement of the operating shaft,
Having a predetermined support portion and a pedestal portion fixed directly or indirectly to the tank body,
The plug lid is rotatably attached to the support portion and is configured to rotate along with the reciprocating movement of the operating shaft,
The opening/closing state of the waste water inlet is switched by rotating the plug cover with the reciprocating movement of the operating shaft, and the plug cover is inclined with respect to the horizontal direction when the waste water inlet is in the open state . It is configured to be in a state inclined to
The tank body has a bottom wall portion and a side wall portion erected from the peripheral edge of the bottom wall portion,
The plug lid is arranged on the side of the side wall, has a rotation axis extending along the width direction of the side wall, and rotates about the side opposite to the side wall as a rotation center. A drain plug device, characterized in that it is configured to be able to The upper surface of the plug lid has a flat surface shape or a downwardly convex curved surface shape,
When the drain inlet is in a closed state, the plug lid is accommodated in a depression-shaped recess provided in the tank body, and a continuous surface extends from the surface of the tank body to the top surface of the plug lid. 2. The drain plug assembly of claim 1, wherein the drain plug assembly is configured to have a shape. The drainage inlet is located in a recessed recess provided in the tank body ,
When the drain inlet is in the open state, the lowermost portion of the upper surface of the plug lid along the inclination direction of the plug lid is arranged in the recess or vertically above the recess. The drain plug device according to claim 1 or 2, characterized by: A drain port member inserted into a mounting hole formed through the tank body and to which the pedestal is mounted,
The drain port member is
a tubular main body having an end opening constituting the drainage inlet;
a brim protruding outward from the upper end of the main body,
In a cross section that passes through the internal space of the main body and is perpendicular to the rotation axis of the plug lid, the amount of protrusion of the collar with respect to the outer peripheral portion of the main body is larger than that on the side opposite to the side wall. 4. The drain plug device according to any one of claims 1 to 3, wherein the side wall side is configured to be smaller. The plug lid is configured to be attachable to and detachable from the support,
The drain plug device according to any one of claims 1 to 4 , wherein the plug lid can be removed from the support portion by moving the plug lid toward the side wall portion. The operating shaft mechanism alternately holds the operating shaft at a predetermined upper position and holds the operating shaft at a predetermined lower position by pushing against the upper surface of the plug lid. 6. The drain plug device according to any one of claims 1 to 5 , characterized in that it is configured to be able to

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