JP6703876B2 - Drain plug device - Google Patents

Description

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

The drain plug device is for opening and closing a drain port of a tank body (for example, a bathtub or a washbasin), and a lid provided on the drain port and an operated part for operation (for example, an operation button or the like). ) And a transmission member (for example, a wire) that transmits the displacement of the operated portion to the stopper lid side (see, for example, Patent Document 1).

In addition, the operated portion and the stopper cover are attached to one end of the rod-shaped shaft portion, and the outer peripheral side portion (shaft holding portion) provided on the outer peripheral side of the shaft portion moves the shaft portion in the axial direction. It is widely practiced to hold a movable state so that the stopper lid and the operated portion can reciprocate. In such a configuration, the shaft portion is usually inserted through the opening formed in the outer peripheral side portion.

JP, 9-60073, A

By the way, in terms of ensuring smooth movement of the shaft portion, it is necessary to provide a certain amount of clearance between the shaft portion and a portion of the outer peripheral side portion forming the opening. However, if such a gap is provided, foreign matter such as dust or hair attached to the portion of the shaft located between the stopper lid or the operated part and the outer peripheral side will not move when the shaft moves. It is sandwiched between the shaft forming part and the part that forms the opening, or through the opening to the inside of the outer peripheral side (the side opposite to the side where the lid or the operated part is located). There is a risk of getting in. If foreign matter is caught, it may interfere with the movement of the shaft due to the foreign matter, which may reduce operability, or may make it difficult to remove the foreign matter and reduce cleanability and hygiene. is there.

The present invention has been made in view of the above circumstances, and an object thereof is to effectively prevent entrapment of foreign matter and the like, and more reliably prevent deterioration of operability, cleanability, and the like. To provide a drain plug device.

Hereinafter, each means suitable for solving the above-mentioned object will be described in terms of items. In addition, the action and effect peculiar to the corresponding means will be additionally described as needed.

Means 1. A vertically movable stopper lid provided at the drainage port of the tank body,
A rod-shaped shaft portion to which the stopper lid is attached at one end,
An outer peripheral side portion having an opening through which the shaft portion is inserted,
The shaft portion is a drain plug device configured to be movable with respect to the outer peripheral side portion along the axial direction thereof,
At least the outer peripheral surface of the shaft portion that passes through the opening,
A ridge extending along parallel towards direction and the axial direction of the shaft portion,
Adjacent to the ridge portion, a groove portion extending parallel to the ridge portion is formed,
The ridge portion and the groove portion are provided alternately in plural over substantially the entire region along the circumferential direction of the shaft portion,
The outer peripheral side portion has an annular opening forming portion that forms the opening portion,
In the opening forming part,
A recess corresponding to the ridge,
Adjacent to the concave portion, a convex portion corresponding to the groove portion is formed,
The concave portions and the convex portions are alternately provided in a plurality in substantially the entire area along the circumferential direction of the opening forming portion,
The drain plug device, wherein the protruding portion is arranged or close to the concave portion, and the convex portion is arranged or close to the groove portion.

It should be noted that the phrase " substantially the entire area" is intended to include not only the case where the area is provided strictly in the entire area but also the case where the area is provided in the entire area except a part thereof. In addition, "the ridge portion is close to the concave portion" means that the ridge portion is located in the immediate vicinity of the concave portion although it is not arranged in the concave portion. The phrase "the convex portion is close to the groove portion" means that the convex portion is located in the immediate vicinity of the groove portion although it is not arranged in the groove portion. The contents of this paragraph are the same for the means 2 described below.

According to the above means 1, the protrusion and the groove are formed on the outer peripheral surface of the shaft portion that passes through at least the opening. Therefore, for example, even if foreign matter such as hair is wrapped around the shaft portion, the contact area between the foreign matter and the shaft portion tends to be small. Therefore, it is possible to effectively prevent a situation in which the foreign matter adheres to the shaft portion (adheres relatively strongly).

Further, according to the above-mentioned means 1, the ridge portion is arranged or close to the concave portion, and the convex portion is arranged or close to the groove portion. Therefore, when the shaft moves while the foreign matter is attached to at least a portion of the shaft that passes through the opening, the foreign matter is likely to be caught in the convex portion. As described above, since the foreign matter adheres to the shaft portion by the ridges and grooves, the foreign matter is likely to come off the shaft portion when the foreign matter is caught by the convex portion. Thus, it is possible to more reliably prevent the foreign matter from being guided to the opening as the shaft moves. As a result, foreign matter may be caught between the opening forming part and the shaft part, or foreign matter may enter the inside of the outer peripheral side (the side opposite to the side where the lid or the operated part is located). It is possible to effectively prevent this, and it is possible to more reliably prevent deterioration in operability, cleanability, and hygiene.

In particular, according to the above-mentioned means 1, relatively elongated foreign matter such as hair wound around the shaft portion is more reliably caught on the convex portion when the shaft portion moves. Therefore, the above-mentioned means 1 exerts a remarkable effect particularly in terms of preventing entry of a relatively elongated foreign matter such as hair.

Means 2. An operated part for operating the stopper lid provided at the drainage port of the tank body,
A rod-shaped shaft portion to which the operated portion is attached at one end,
An outer peripheral side portion having an opening through which the shaft portion is inserted,
The shaft portion is a drain plug device configured to be movable with respect to the outer peripheral side portion along the axial direction thereof,
At least the outer peripheral surface of the shaft portion that passes through the opening,
A ridge extending along parallel towards direction and the axial direction of the shaft portion,
Adjacent to the ridge portion, a groove portion extending parallel to the ridge portion is formed,
The ridge portion and the groove portion are provided alternately in plural over substantially the entire region along the circumferential direction of the shaft portion,
The outer peripheral side portion has an annular opening forming portion that forms the opening portion,
In the opening forming part,
A recess corresponding to the ridge,
Adjacent to the concave portion, a convex portion corresponding to the groove portion is formed,
The concave portions and the convex portions are alternately provided in a plurality in substantially the entire area along the circumferential direction of the opening forming portion,
The drain plug device, wherein the protruding portion is arranged or close to the concave portion, and the convex portion is arranged or close to the groove portion.

According to the above-mentioned means 2, the same effect as that of the above-mentioned means 1 can be obtained in the mechanism on the side for operating the stopper lid.

Means 3. The drain plug device according to means 1 or 2, wherein the protrusion is disposed in the recess.

If the protruding portion is arranged in the concave portion as in the above means 3, the convex portion is naturally arranged in the concave portion.

According to the above means 3, when the shaft moves while the foreign matter is attached to a portion of the shaft that passes through at least the opening, the foreign matter is very likely to be caught on the convex portion. As a result, it is possible to very effectively prevent the foreign matter from being guided to the opening due to the movement of the shaft portion, and it is possible to more reliably prevent deterioration in operability, cleanability, and the like.

Means 4. A relative positional relationship between the concave portion and the ridge portion arranged or close to the concave portion along the circumferential direction of the shaft portion, and arranged or close to the groove portion and the groove portion along the circumferential direction of the shaft portion. 4. The drain plug device according to any one of means 1 to 3, further comprising a positioning portion for keeping the relative positional relationship of the convex portions constant.

Incidentally, the "positioning portion" strictly keeps the relative positional relationship between the concave portion and the ridge portion arranged or close to the concave portion and the relative positional relation between the groove portion and the convex portion arranged or close to the groove portion strictly constant. It doesn't have to be. When the ridges are close to the recesses and the ridges are close to the grooves, the "positioning part" means that the tops of the ridges do not face the tops of the ridges, and It suffices if the relative positional relationship between the adjacent ridge portions and the relative positional relationship between the groove portion and the convex portion adjacent to the groove portion can be maintained. Further, in the case of the configuration in which the protruding portion is arranged with respect to the concave portion and the protruding portion is arranged with respect to the groove portion (configuration of the above-mentioned means 3), the "positioning portion" is such that the convex portion does not strongly contact the protruding portion. It suffices that the relative positional relationship between the concave portion and the ridge portion arranged in the concave portion and the relative positional relation between the groove portion and the convex portion arranged in the groove portion can be maintained to some extent.

According to the above means 4, the positioning portion can keep the relative positional relationship between the concave portion and the protruding portion and the relative positional relationship between the groove portion and the convex portion constant. Therefore, it is possible to prevent the size of the gap formed between the shaft portion and the opening forming portion from significantly fluctuating, and it is possible to further effectively prevent foreign matter from being caught. Further, it is possible to prevent the shaft portion from coming into strong contact with the opening forming portion, and it is possible to obtain better operability.

The "positioning portion" can be realized, for example, by means for restricting relative rotation of the shaft portion with respect to the outer peripheral side portion when the shaft portion simply moves axially. Further, when the shaft portion is pivotally moved while being axially moved, the “positioning portion” regulates relative rotation of the shaft portion with respect to the outer peripheral side portion, for example, except for rotational movement at the time of axial movement. It can be realized by means. For example, while providing a protrusion on the outer periphery of the shaft portion, an inclined portion that is inclined with respect to the circumferential direction of the shaft portion is provided on the inner periphery of the outer peripheral side portion, and the protrusion slides on the inclined portion when the shaft portion moves, When the shaft portion is configured to rotate while rotating axially, by means of pressing the projection portion against the inclined portion and preventing rattling of the shaft portion with respect to the outer peripheral side (for example, a spring), A “positioning unit” can be realized.

Means 5. The outer peripheral side portion is adjacent to the opening portion, and has an annular opening adjacent portion located on the one end side of the shaft portion,
5. The drain plug device according to any one of means 1 to 4, wherein the opening adjacent portion is provided with a tapered surface that is gradually away from the shaft portion toward the other end side of the shaft portion.

According to the above means 5, when the shaft moves while the foreign matter is attached to the shaft, the foreign matter comes into contact with the tapered surface of the opening adjacent portion, and thus the foreign matter is easily removed toward the side away from the shaft. Become. Therefore, it is possible to more effectively prevent entrapment of foreign matter and the like, and it is possible to more reliably prevent deterioration of operability, cleanability, and the like.

It is a partially broken front view of a drainage device. It is a partial expanded perspective view for showing the composition of the axis part and the peripheral part in a drainage device. It is sectional drawing of an operating device. It is a partial expanded perspective view for showing a ridge part, a groove part, etc. in an operating device. It is an exploded perspective view of an attachment member, an operation side mechanism, etc. FIG. 6 is an exploded perspective view of an outer peripheral side portion, a shaft portion and the like of the operating device. FIG. 6 is an exploded perspective view of an outer peripheral side portion, a shaft portion and the like of the operating device. It is a partially broken front view of the operating device in 2nd Embodiment. It is a partial expanded perspective view for showing the composition of the axis part and the peripheral side part in the operating device of a 2nd embodiment.

Embodiments will be described below with reference to the drawings.
[First Embodiment]
As shown in FIGS. 1 and 3, the drain plug device 1 includes a drain port device 2, an operating device 3 and a release wire 4, and is attached to a bath 100 as a tank body.

The bathtub 100 includes a bottom wall portion 101 and a side wall portion 102 standing on the outer circumference of the bottom wall portion 101. A drainage port 103 for drainage is formed through the bottom wall portion 101, and an overflow port 104 for preventing water from overflowing from the bathtub 100 is formed through the top portion of the side wall portion 102. ing.

First, the configuration of the drainage device 2 will be described. As shown in FIG. 1, the drainage port device 2 is provided in the drainage port 103 and includes a drainage port member 21, a drainage pipe 22, an attachment member 23, a support shaft mechanism 24, and a stopper lid 25. ing.

The drain port member 21 has a tubular shape and is inserted into the drain port 103. Further, the drainage port member 21 is provided with an annular flange portion 21A formed on the upper end thereof so as to project toward the outer peripheral side, and a male screw portion 21B formed on the outer periphery below the flange portion 21A.

The drainage pipe 22 has a cylindrical shape whose upper end portion extends along the vertical direction, and is provided with an internal thread portion 22A capable of screwing the male screw portion 21B on the inner circumference of the upper end portion. Then, while inserting the drain port member 21 into the drain port 103, the male screw portion 21B is screwed into the female screw portion 22A, and the bottom wall portion 101 is sandwiched by the collar portion 21A and the upper end surface of the drain pipe 22. Is connected to the drainage member 21 and attached to the bathtub 100. Thereby, the drainage passing through the drainage port 103 (inner periphery of the drainage port member 21) flows down into the drainage pipe 22 and is discharged. In the present embodiment, the seal member 5 made of an elastically deformable material is interposed between the upper end surface of the drain pipe 22 and the back surface of the bottom wall portion 101. Water leakage between the mouth member 21, the drain pipe 22 and the bath 100 is prevented.

The attachment member 23 has a tubular shape and includes a holding portion 23A, an outer ring portion 23B, and a connecting portion 23C.

The holding portion 23A has a tubular shape and holds the support shaft mechanism 24 at its inner circumference.

The outer ring portion 23B is located on the outer periphery of the holding portion 23A and has an annular shape coaxial with the holding portion 23A.

The connecting portion 23C extends along the radial direction of the holding portion 23A, and connects the outer peripheral surface of the holding portion 23A and the inner peripheral surface of the outer ring portion 23B. In addition, a plurality of (for example, four) connecting portions 23C are provided at equal intervals along the circumferential direction of the holding portion 23A, and the drainage flows through the gap between the connecting portions 23C.

The support shaft mechanism 24 includes a rod-shaped shaft portion 24A and an outer peripheral side portion 24B that holds the shaft portion 24A in a vertically movable state on its inner periphery.

The shaft portion 24A has a tip end portion fitted into a tubular portion formed on the back surface of the stopper lid 25, and is capable of reciprocating with respect to the outer peripheral side portion 24B along its own axial direction. Further, an end of a transmission member 41 (for example, a metal wire) of the release wire 4 described later is configured to be able to contact the lower end of the shaft portion 24A.

The outer peripheral side portion 24B has a cylindrical shape, and has an opening portion 24C (see FIG. 2) at one end portion (upper end portion) thereof into which the shaft portion 24A is inserted. Further, an end portion of a tube member 42 of the release wire 4 described later is fixed to the other end portion (lower end portion) of the outer peripheral side portion 24B. A detailed description will be given later of the outer peripheral shape of the shaft portion 24A and the shape of the portion of the outer peripheral side portion 24B where the opening 24C is formed.

Further, in the present embodiment, a predetermined lock mechanism (for example, thrust lock mechanism) is provided inside the outer peripheral side portion 24B. Then, when the shaft portion 24A is pushed up to a predetermined position or more by the transmission member 41, the shaft portion 24A is locked by the lock mechanism while keeping the raised state. In this state, when the transmission member 41 pushes up the shaft portion 24A again to the predetermined position or more, the lock by the lock mechanism is released, and the shaft portion 24A moves downward.

Further, the support shaft mechanism 24 includes a return force applying portion (for example, a spring member) (not shown) inside the outer peripheral side portion 24B. In the state in which the lock by the lock mechanism is released, except for the case where the drainage port 103 is closed, the return force imparting portion causes the transmission member 41 to move backward (from the drainage port device 2 to the operating device 3). A biasing force (toward the side) is added.

The stopper lid 25 includes a disc-shaped lid portion 25A and an annular packing portion 25B made of an elastically deformable material (for example, resin or rubber) fixed to the outer peripheral surface of the back surface of the lid portion 25A. There is. The stopper lid 25 moves up and down together with the shaft portion 24A, and the stopper lid 25 moves upward with the upward movement of the shaft portion 24A, so that the drainage port 103 is opened. On the other hand, as the shaft portion 24A moves downward, the stopper lid 25 moves downward, and the entire outer peripheral portion of the packing portion 25B comes into contact with the drainage port member 21, whereby the drainage port 103 is closed.

Next, the configuration of the operating device 3 will be described. As shown in FIG. 3, the operation device 3 includes a mounting member 31, a pipe 32, and an operation side mechanism 34.

The mounting member 31 has a tubular shape and is inserted into the overflow port 104. Further, the mounting member 31 includes a flange portion 31A formed at one end portion thereof so as to project outward in the radial direction, and a male screw portion 31B formed at the outer peripheral surface on the other end side of the flange portion 31A. Further, the mounting member 31 includes a plurality of mounting projections 31C provided on the inner circumference of the other end at equal intervals along the circumferential direction.

The pipe 32 has a tubular shape that is bent substantially at a right angle, and is provided with an internal thread portion 32A on one end side (overflow port 104 side) of which the internal thread portion 31B can be screwed. In the present embodiment, one end of the pipe 32 is arranged coaxially with the overflow port 104 on the back side of the side wall part 102, and the male screw part 31B of the mounting member 31 is screwed into the female screw part 32A through the overflow port 104. By sandwiching the side wall portion 102 between the flange portion 31A and one end surface of the pipe 32, the pipe 32 is connected to the attachment member 31 and is attached to the side wall portion 102. In the present embodiment, an annular seal member 6 made of an elastically deformable material is arranged between the back surface of the side wall portion 102 and one end surface of the pipe 32, and the seal member 6 allows the seal member 6 to be attached. Water leakage between the member 31 and the pipe 32 and the bath 100 is prevented.

In addition, a slit portion 32B extending in a direction parallel to the axial direction of an inner cylinder portion 341B described later is formed in a portion of the pipe 32 that is disposed above the other end of the operation side mechanism 34.

In addition, a connecting pipe (not shown) connected to the drain pipe 22 is connected to the other end (lower end) of the pipe 32. As a result, the drainage that has flowed into the inside of the pipe 32 through the inside of the mounting member 31 passes through the connecting pipe and flows down into the drainage pipe 22.

The operation side mechanism 34 includes an outer peripheral side portion 341, a rotation portion 342, a rotation support portion 343, and an operation member 344.

The outer peripheral side portion 341 is a member for holding the rotating portion 342, the operation member 344, and the like inside the pipe 32. As shown in FIGS. 4 to 7, the outer peripheral side portion 341 includes an outer annular portion 341A, an inner tubular portion 341B, and an arm portion 341C.

The outer annular portion 341A has an outer diameter that is substantially the same as the inner diameter of the mounting member 31. Further, the outer annular portion 341A is provided with a claw portion 341D (see FIGS. 6 and 7) protruding from the other end surface in a direction parallel to the axial direction thereof. A plurality (three in the present embodiment) of claws 341D are provided at equal intervals along the circumferential direction of the outer annular portion 341A, and the tip end of each claw 341D is engaged with the claw 341D so as to project outward. The part 341E is formed. Further, in the present embodiment, the outer peripheral side portion 341 is attached to the attachment member 31 by sandwiching the attachment projection 31C of the attachment member 31 by the other end surfaces of the engagement portion 341E and the outer annular portion 341A. ..

The inner cylindrical portion 341B is located inside the outer annular portion 341A, and has a cylindrical shape in which both one end and the other end are open. The rotating portion 342 is relatively rotatably inserted in the inner circumference of the inner cylindrical portion 341B. In addition, the inner tubular portion 341B has an opening 341G at one end thereof, and a shaft portion 344B of the operation member 344, which will be described later, is inserted into the opening 341G.

In addition, a plate-shaped rotation preventing protrusion 341F (see FIG. 7) that protrudes outward in the radial direction is formed on the outer circumference of the inner cylindrical portion 341B, and the rotation preventing protrusion 341F includes the slit portion. It is located at 32B. As a result, the outer peripheral side portion 341 is arranged at an appropriate position in the circumferential direction, and rotation of the outer peripheral side portion 341 with respect to the pipe 32 is prevented.

The arm portion 341C connects the inner peripheral surface of the outer annular portion 341A and the outer peripheral surface of the inner cylindrical portion 341B, and holds the inner cylindrical portion 341B inside the outer annular portion 341A. The plurality of arm portions 341C are provided at equal intervals (three in the present embodiment) along the circumferential direction of the outer annular portion 341A. A gap is formed between the adjacent arm portions 341C, and the water flowing into the internal space of the attachment member 31 flows into the pipe 32 through the gap.

The rotating portion 342 has a cylindrical shape and is arranged on the outer periphery of a shaft portion 344B of the operation member 344, which will be described later. The rotating portion 342 is rotatable relative to the shaft portion 344B along the circumferential direction. Further, a curved dented accommodating portion 342A (see FIG. 7) is formed on the outer peripheral side of the other end surface of the rotating portion 342, and the end portion of the transmission member 41 is fitted into the accommodating portion 342A. The rotating portion 342 and the transmission member 41 are connected. Then, when the rotating portion 342 rotates, the rotating portion 342 presses the end portion of the transmission member 41 along the rotating direction, and as a result, the rotating portion 342 becomes tangential to the rotating direction of the rotating portion 342. The end portion of the transmission member 41 moves forward (moves from the operation device 3 to the drain port device 2 side) along the same.

Further, an inclined portion 342B that is inclined with respect to the circumferential direction of the rotating portion 342 is formed on the inner circumference of the rotating portion 342. The inclined portion 342B is a portion that can come into contact with a protrusion 344D of a shaft portion 344B, which will be described later, along the rotation axis direction of the rotation portion 342, and the inclination with respect to the rotation axis direction is constant over the entire region. It is configured to have a spiral shape. In this embodiment, two inclined portions 342B are provided on the inner circumference of the rotating portion 342.

The rotation support portion 343 is screwed and fixed to the inner tubular portion 341B and closes the other end side opening of the inner tubular portion 341B and the opening of the housing portion 342A. Further, the rotation support portion 343 includes a plate-shaped plate-shaped portion 343A that closes the other end side opening of the inner cylindrical portion 341B, and a rod-shaped portion 343B that projects from the center of the plate-shaped portion 343A.

The plate-shaped portion 343A has a smooth and smooth portion at least facing the other end surface of the rotating portion 342, and when the rotating portion 342 rotates, the other end surface of the rotating portion 342 with respect to the facing portion. Are designed to slide in contact with each other.

The rod-shaped portion 343B has a tubular shape, and is provided with a plurality of ribs (protrusions) (four in the present embodiment) extending along the axial direction of the rod-shaped portion 343B. Further, the base portion of the rod-shaped portion 343B has a cylindrical shape, and the rotation portion 342 is supported by the base portion.

The operating member 344 includes an operated portion 344A (see FIG. 3) having a circular shape when viewed from the water storage space side of the bathtub 100, and a shaft portion 344B fixed to the operated portion 344A coaxially with the operated portion 344A. I have it.

The operated portion 344A is a portion operated by the user when opening and closing the drainage port 103, and is exposed on the front surface side of the bathtub 100 (side wall portion 102). Further, in the present embodiment, when the drainage port 103 is closed, the surface of the operated portion 344A is configured to be flush with the surface of the flange portion 31A, and the operated portion 344A is always the surface of the mounting member 31. It is supposed not to stick out from. This improves the appearance quality and safety.

The shaft portion 344B has a rod shape and can reciprocate with respect to the outer peripheral side portion 341 along the axial direction of the shaft portion 344B. Further, the shaft portion 344B has a hole portion 344C (see FIG. 7) on the end surface opposite to the operated portion 344A. The hole portion 344C is formed with a plurality of recessed portions having a shape corresponding to the ribs of the rod-shaped portion 343B. With the ribs of the rod-shaped portion 343B arranged in relation to the recessed portions, the hole-shaped portion 344C is rod-shaped. The part 343B is inserted. Thereby, relative rotation of the shaft portion 344B with respect to the outer peripheral side portion 341 along the circumferential direction thereof is substantially restricted. In the present embodiment, the positioning portion is configured by the portion of the rod portion 343B and the shaft portion 344B that forms the hole portion 344C. Since a certain amount of clearance is formed between the rod-shaped portion 343B and the portion of the shaft portion 344B that forms the hole portion 344C, the shaft portion 344B is relatively rotatable with respect to the outer peripheral side portion 341. .

Further, two fan-shaped protrusions 344D protruding outward are formed on the outer periphery of the shaft 344B. Due to the presence of the protruding portion 344D, the shaft portion 344B cannot pass through the opening portion 341G of the inner cylindrical portion 341B and is always arranged inside the rotating portion 342. Further, when the shaft portion 344B is moved forward in response to the pressing of the operated portion 344A, the protrusion portion 344D comes into contact with the inclined portion 342B.

The outer peripheral shape of the shaft portion 344B and the shape of the outer peripheral side portion 341 where the opening 341G is formed will be described in detail later.

The release wire 4 is provided between the support shaft mechanism 24 and the operation side mechanism 34, and includes a long transmission member 41 made of a wire and the like, and a long tubular tube member 42 made of a resin and the like. There is. The transmission member 41 is arranged on the inner circumference of the tube member 42 and is capable of reciprocating with respect to the tube member 42.

Next, the operation of each part when opening and closing the drainage port 103 will be described. First, when the drainage port 103 is changed from the closed state to the open state, the operated portion 344A is pushed and the shaft portion 344B is moved forward, so that the projection portion 344D pushes the inclined portion 342B, and thus the rotating portion 342 rotates. It rotates relative to the portion 344B. As a result, the end of the transmission member 41 is pressed by the turning portion 342, and the end of the transmission member 41 moves forward along the tangential direction of the turning direction of the turning portion 342. Further, as a result, the transmission member 41 moves forward inside the tube member 42, and the shaft portion 24A is pushed up by the end portion of the transmission member 41. When the shaft portion 24A is pushed up to a predetermined position or more, the shaft portion 24A is locked at a predetermined upper position with the stopper lid 25 separated from the drain port member 21 by the lock mechanism, and the drain port 103 is opened. To be done.

On the other hand, when the drainage port 103 is changed from the open state to the closed state, the transmission member 41 is moved forward by pressing the operated portion 344A and moving the shaft portion 344B in the same manner as when opening the drainage port 103. .. Then, when the shaft portion 24A is pushed up to a predetermined position or more by the transmission member 41, the lock of the shaft portion 24A by the lock mechanism is released, and the shaft portion 24A and the stopper lid 25 are released by the action of gravity and the return force applying portion. Move down. As a result, the packing portion 25B comes into contact with the drain port member 21 and the drain port 103 is closed. In addition, when the transmission member 41 is moved back in the tube member 42 by the action of the return force application portion, as a result, the rotating portion 342 is pressed by the end portion of the transmission member 41 to open the drainage port 103. It rotates in the opposite direction. As a result, the protrusion 344D is pressed by the inclined portion 342B, the shaft 344B (operation member 344) is moved back, and the operation member 344 is moved until the surface of the operated portion 344A becomes flush with the surface of the flange 31A. Will return.

Next, the outer peripheral shape of the shaft portion 24A and the shape of the portion of the outer peripheral side portion 24B where the opening portion 24C is formed will be described.

As shown in FIG. 2, on the outer peripheral surface of the shaft portion 24A that passes through at least the opening portion 24C, a plurality of protruding portions 24D and a plurality of groove portions 24E are alternately arranged in the entire region along the circumferential direction. It is provided.

The ridge portion 24D has a linear shape extending in a direction parallel to the axial direction of the shaft portion 24A. Further, each of the ridge portions 24D has the same length along the axial direction of the shaft portion 24A and has the same width along the circumferential direction of the shaft portion 24A.

The groove 24E is provided between the adjacent ridges 24D and extends parallel to the ridges 24D. In addition, each groove portion 24E has the same length along the axial direction of the shaft portion 24A and has the same width along the circumferential direction of the shaft portion 24A.

In addition, a plurality of convex portions 24G and a plurality of concave portions 24H are alternately formed in the entire area along the circumferential direction of the opening forming portion 24F which is a portion of the outer peripheral side portion 24B where the opening portion 24C is formed. There is.

In the present embodiment, the convex portions 24G correspond to the groove portions 24E, are provided in the same number as the groove portions 24E, and are set to a size that can be arranged in the groove portions 24E. The convex portion 24G is formed on the entire area of the opening forming portion 24F along the axial direction of the shaft portion 24A, and has a linear shape extending along a direction parallel to the axial direction of the shaft portion 24A. In addition, each convex portion 24G has the same length along the axial direction of the shaft portion 24A, and also has the same width along the circumferential direction of the opening forming portion 24F. The convex portion 24G does not necessarily have to be formed over the entire area of the opening forming portion 24F along the axial direction of the shaft portion 24A, and at least at the edge portion of the opening forming portion 24F on the plug lid 25 side. It should be formed.

The recesses 24H correspond to the protrusions 24D, the same number as the protrusions 24D are provided, and the recesses 24D are set to have a size in which the protrusions 24D can be arranged. The concave portion 24H is formed in the entire area of the opening forming portion 24F along the axial direction of the shaft portion 24A, and extends parallel to the convex portion 24G. In addition, each recess 24H has the same length along the axial direction of the shaft portion 24A, and has the same width along the circumferential direction of the opening forming portion 24F. Note that, like the convex portion 24G, the concave portion 24H does not necessarily have to be formed in the entire region of the opening forming portion 24F along the axial direction of the shaft portion 24A, and at least the position of the opening forming portion 24F on the plug lid 25 side. It suffices that it is formed at the edge portion that

In addition, an annular gap is formed between the shaft portion 24A and the opening forming portion 24F in order to smoothly move the shaft portion 24A. Moreover, in the present embodiment, the protrusions 24D are close to the recess 24H in the state of facing the recesses 24H, and the protrusions 24G are close to the groove 24E in the state of facing the grooves 24E. There is.

The phrase "the ridge portion 24D is close to the concave portion 24H and the convex portion 24G is close to the groove portion 24E" means that the ridge portion 24D is arranged with respect to the concave portion 24H and the convex portion 24G is arranged with respect to the groove portion 24E. Although not formed, the value obtained by subtracting the diameter of the virtual circle in contact with the outermost peripheral portion of the shaft portion 24A from the diameter of the virtual circle in contact with the innermost peripheral portion of the opening forming portion 24F is very small (for example, 0.5 mm Less than) can be said to be the state. Further, in order to prevent the smooth movement of the shaft portion 24A from being hindered by the influence of the minute inclination of the shaft portion 24A or the minute foreign matter, the size of the gap between the shaft portion 24A and the opening forming portion 24F is increased. The length is set to a predetermined value (for example, 0.5 mm) or more. It should be noted that 0.5 mm illustrated as the above-mentioned predetermined value is an example, and can be appropriately changed according to the inner diameter of the opening, the length of the shaft, the type of foreign matter to be prevented from entering, and the like.

Next, the outer peripheral shape of the shaft portion 344B and the shape of the portion of the outer peripheral side portion 341 where the opening 341G is formed will be described with reference to FIG. Basically, the outer peripheral shape of the shaft portion 344B and the shape of the portion of the outer peripheral side portion 341 where the opening 341G is formed are similar to the outer peripheral shape of the shaft portion 24A and the shape of the opening forming portion 24F described above.

That is, a plurality of protrusions 344E and a plurality of grooves 344F are alternately provided on the outer peripheral surface of the shaft portion 344B that passes through at least the opening 341G in the entire region along the circumferential direction.

The protruding portion 344E has a linear shape extending along a direction parallel to the axial direction of the shaft portion 344B. The groove 344F is provided between the adjacent ridges 344E and extends in parallel with the ridges 344E. The protrusions 344E and the grooves 344F have the same length and the same width, respectively. Further, the protruding portion 344E and the groove portion 344F are provided over the entire area of the shaft portion 344B in the circumferential direction.

In addition, a plurality of convex portions 341L and a plurality of concave portions 341M are alternately formed in the entire area along the circumferential direction of the opening forming portion 341H which is a portion of the outer peripheral side portion 341 where the opening portion 341G is formed. There is.

The convex portion 341L is formed on the entire area of the opening forming portion 341H along the axial direction of the shaft portion 344B (see FIG. 5), and has a linear shape extending along the moving direction of the outer peripheral surface of the shaft portion 344B. .. In addition, the concave portion 341M is formed in the entire area of the opening forming portion 341H along the axial direction of the shaft portion 344B, and extends parallel to the convex portion 341L. The convex portions 341L and the concave portions 341M have the same length and the same width, respectively. The convex portion 341L and the concave portion 341M do not necessarily have to be formed over the entire area of the opening forming portion 341H along the axial direction of the shaft portion 344B, and are located at least on the operated portion 344A side of the opening forming portion 341H. It may be formed at the edge portion.

In addition, an annular gap is formed between the shaft portion 344B and the opening forming portion 344H in order to achieve smooth movement of the shaft portion 344B. Then, the protrusions 344E are arranged (entered) in the recesses 341M, and the protrusions 341L are arranged (entered) in the respective groove portions 344F. In addition, in order to prevent the smooth movement of the shaft portion 344B from being hindered by the influence of a slight inclination of the shaft portion 344B or a minute foreign substance, the size of the gap between the shaft portion 344B and the opening forming portion 344H is increased. The length is set to a predetermined value (for example, 0.5 mm) or more. It should be noted that 0.5 mm exemplified as the predetermined value is an example, and can be appropriately changed according to the inner diameter of the opening and the like.

Further, in the present embodiment, as described above, the relative rotation of the shaft portion 344B with respect to the outer peripheral side portion 341 is caused by the portion of the rod portion 343B and the shaft portion 344B forming the hole portion 344C (that is, both constituting the positioning portion). Movement is almost regulated. As a result, the relative positional relationship between the concave portion 24H and the ridge portion 344E arranged in the concave portion 24H and the relative positional relationship between the groove portion 344F and the convex portion 341L arranged in the groove portion 344F are kept substantially constant, and an external force is temporarily applied. Even if is added to the shaft portion 344B, the ridge portion 344E does not come into strong contact with the convex portion 341L.

In addition, in the present embodiment, the outer peripheral side portion 341 is provided with an annular opening adjoining portion 341N that is adjacent to the opening portion 341G and is located on the one end portion (operated portion 344A) side of the shaft portion 344B. The opening adjoining portion 341N includes a tapered surface that gradually moves away from the shaft portion 344B toward the other end side of the shaft portion 344B (see FIG. 3). In the present embodiment, the tapered surface is the opening adjoining portion. It is formed over the entire circumferential direction of the 341N.

As described above in detail, according to the present embodiment, the protrusion 24D (344E) and the groove 24E (344F) are provided on the outer peripheral surface of the shaft portion 24A (344B) that passes through at least the opening 24C (341G). ) Has been formed. Therefore, for example, even if foreign matter such as hair is wrapped around the shaft portion 24A (344B), the contact area between the foreign matter and the shaft portion 24A (344B) tends to be small. Therefore, it is possible to effectively suppress the situation in which the foreign matter adheres to the shaft portion 24A (344B) (relatively firmly adheres).

Further, the protruding portion 24D is close to the concave portion 24H, and the convex portion 24G is close to the groove portion 24E. Therefore, when the shaft portion 24A moves in a state where the foreign material adheres to at least a portion of the shaft portion 24A that passes through the opening 24C, the foreign material is likely to be caught in the convex portion 24G. As described above, the protrusions 24D and the grooves 24E prevent the foreign matter from adhering to the shaft portion 24A. Therefore, when the foreign matter is caught by the convex portion 24G, the foreign matter is likely to come off the shaft portion 24A. As a result, it is possible to more reliably prevent the foreign matter from being guided to the opening 24C as the shaft 24A moves. As a result, it is possible to effectively prevent foreign matter from being trapped between the opening forming portion 24F and the shaft portion 24A, or from entering inside the outer peripheral side portion 24B. It is possible to more reliably prevent deterioration in cleaning property, cleanability, and hygiene.

Further, in the present embodiment, the ridge portion 344E is arranged in the concave portion 341M, and the convex portion 341L is arranged in the groove portion 344F. Therefore, when the shaft portion 344B moves in a state where the foreign matter adheres to at least a portion of the shaft portion 344B that passes through the opening 341G, the foreign matter is very likely to be caught by the convex portion 341L. As a result, it is possible to extremely effectively prevent the foreign matter from being guided to the opening 341G as the shaft 344B moves, and it is possible to more reliably prevent deterioration in operability, cleanability, and the like. ..

Further, in the conventional drain plug device, the shaft portion has a circular cross section and the opening has a round hole shape, so that the size of the gap between the shaft portion and the opening forming portion has a predetermined value (for example, 0. 5 mm) or more, as a result, from the diameter of the virtual circle contacting the innermost peripheral portion of the opening forming portion (inner diameter of the opening) to the diameter of the virtual circle contacting the outermost peripheral portion of the shaft portion (shaft portion) Also, the value obtained by subtracting (outer diameter) is more than the predetermined value, and the foreign matter easily enters the inside of the outer peripheral side portion. That is, in the conventional drain plug device, there is a trade-off relationship between the smooth movement of the shaft portion and the suppression of foreign matter intrusion. On the other hand, according to the present embodiment, the size of the gap can be set to the predetermined value or more while the subtracted value is set to a sufficiently small value less than the predetermined value. As a result, it is possible to simultaneously realize both suppression of foreign matter intrusion into the inside of the outer peripheral side portions 24B and 341 and smooth movement of the shaft portions 24A and 344B.

In addition, the size of the gap formed between the shaft portion 344B and the opening forming portion 341G by the portion of the rod portion 343B and the shaft portion 344B forming the hole portion 344C (that is, both constituting the positioning portion). It is possible to prevent a remarkable change in the temperature, and to further effectively prevent entrapment of foreign matter. Further, it is possible to prevent the shaft portion 344B from coming into strong contact with the opening forming portion 341G, and it is possible to obtain better operability.

Further, in the present embodiment, when the shaft portion 344B moves with the foreign matter attached to the shaft portion 344B, the foreign matter comes into contact with the tapered surface of the opening adjacent portion 341N, and thus the foreign matter moves away from the shaft portion 344B. It becomes easy to be removed. Therefore, it is possible to more effectively prevent entrapment of foreign matter and the like, and it is possible to more reliably prevent deterioration of operability, cleanability, and the like.
[Second Embodiment]
Next, a second embodiment will be described. The operating device 3 in the first embodiment converts the axial movement of the shaft portion 344B when the operated portion 344A is pressed into the rotational movement of the rotating portion 342, and moves the transmission member 41 by this rotational movement. Is configured to let. On the other hand, in the operating device 7 according to the second embodiment, as shown in FIG. 8, when the operated portion 74 is pressed, the axial movement of the shaft portion 73B is directly transmitted to the transmission member 41. The transmission member 41 is configured to move.

Explaining the configuration of the operating device 7, the operating device 7 includes a tubular guide member 71, a joint member 72 into which the guide member 71 is screwed, an operation-side mechanism 73 held by the guide member 71, and an operation device. The operation target portion 74 attached to the side mechanism 73 is provided.

The guide member 71 is inserted into a predetermined mounting hole 105 by screwing a male screw portion 71A formed on the outer circumference of the guide member 71 into a female screw portion 72A formed on the inner circumference of the joint member 72. In the second embodiment, the mounting hole 105 is formed so as to penetrate the flange portion 106 that is formed to project outward from the upper end of the side wall portion 102 of the bathtub 100. Further, the guide member 71 is provided at its lower end portion with a holding portion 71B having a cylindrical shape with a relatively small diameter.

The joint member 72 is fixed to the flange portion 106 by sandwiching the flange portion 106 with the guide member 71. The joint member 72 constitutes a drainage channel for water that has entered the guide member 71, and is connected to the drainage pipe 22 by a predetermined connecting pipe.

The operation side mechanism 73 includes a cylindrical outer peripheral side portion 73A which is held by the holding portion 71B in a vertically immovable state, and a rod-shaped shaft which is vertically held in an inner periphery of the outer peripheral side portion 73A. Section 73B.

The outer peripheral side portion 73A has a tubular shape and has an opening portion 73C (see FIG. 9) through which the shaft portion 73B is inserted at one end thereof.

The operated portion 74 is attached to one end portion (upper end portion) of the shaft portion 73B, while the other end portion (lower end portion) of the shaft member 73B can contact the end portion of the transmission member 41. By pressing the operated portion 74, the shaft portion 73B axially moves and the transmission member 41 moves inside the tube member 42.

The operated portion 74 has a disc shape and functions as an operation button when opening and closing the drainage port 103.

Also in the second embodiment, as in the first embodiment, as shown in FIG. 9, the outer peripheral surface of at least the portion of the shaft portion 73B that passes through the opening 73C extends along the circumferential direction thereof. In addition, a plurality of ridges 73D and a plurality of grooves 73E are alternately provided in the entire area. The ridge 73D and the groove 73E extend along a direction parallel to the axial direction of the shaft 73B.

Further, in the opening forming portion 73F, which is a portion of the outer peripheral side portion 73A where the opening portion 73C is formed, a plurality of convex portions 73G and a plurality of concave portions 73H are alternately formed in the entire region along the circumferential direction. . The convex portion 73G and the concave portion 73H extend in the same direction as the extending direction of the protrusion 73D and the like.

In addition, while the annular gap is formed between the shaft portion 344B and the opening forming portion 344H, the protruding portion 73D is arranged for each concave portion 73H, and the convex portion 73G is arranged for each groove portion 73E. Has been done.

As described above, according to the second embodiment, basically, the same operational effect as that of the first embodiment is obtained. That is, it is possible to effectively prevent foreign matter from being trapped between the opening forming portion 73F and the shaft portion 73B, and to prevent foreign matter from entering the inside of the outer peripheral side portion 73A. It is possible to more reliably prevent deterioration of cleanability and hygiene.

It should be noted that the present invention is not limited to the contents described in the above embodiment, and may be carried out as follows, for example. Of course, other application examples and modification examples not illustrated below are naturally possible.

(A) In the above-described first embodiment, each of the drainage port device 2 and the operating device 3 includes a ridge portion and a groove portion, and a convex portion and a recessed portion. It is also possible to provide the ridges and grooves, and the protrusions and recesses only on the bottom.

(B) In the first embodiment, the protrusion 24D is close to the recess 24H and the protrusion 24G is close to the groove 24E, but the protrusion 24D may be arranged in the recess 24H. . In this case, as a result, the convex portion 24G is arranged in the groove portion 24E.

Further, in the above-described embodiment, the ridge portion 344E (73D) is arranged in the concave portion 341M (73H) and the convex portion 341L (73G) is arranged in the groove portion 344F (73E), but the ridge portion 344E (73D). May be close to the concave portion 341M (73H), and the convex portion 341L (73G) may be close to the groove portion 344F (73E). In this case, when the positioning portion is provided, the positioning portion is configured such that the relative positional relationship between the concave portion and the ridge portion proximate to the concave portion and the groove portion are such that at least the top portion of the convex portion does not face the top portion of the convex portion. It suffices that the relative positional relationship between the convex portions adjacent to the groove portion and the relative positional relationship be substantially constant.

(C) In the above embodiment, the shaft portions 344B and 73B are configured to simply move axially, but the shaft portions may be configured to rotate while rotating axially. For example, a protrusion is provided on the outer circumference of the shaft portion, and a spiral inclined portion (step or groove) that is inclined with respect to the circumferential direction is provided on the inner circumference of the outer circumferential side portion arranged on the outer circumference of the shaft portion. The shaft portion is non-rotatable with respect to the bathtub 100, while the shaft portion is relatively rotatable with respect to the outer peripheral side portion. Then, when the shaft part moves forward, the projection part slides on the inclined part to rotate the shaft part to one side, and when the shaft part returns, the projection part slides on the inclined part. The shaft portion may be configured to rotate to the other side by moving, so that the shaft portion is configured to rotate while rotating axially. In the case of such a configuration that the shaft portion pivotally moves while performing the axial movement in this way, and when the protruding portion is arranged in the recessed portion, in order to ensure smooth movement of the shaft portion, the protruding portion and the groove portion are provided. Will extend along the moving direction of the outer peripheral surface of the shaft portion (oblique direction with respect to the circumferential direction of the shaft portion) (however, reference example) .

(D) In the first embodiment described above, the lengths and widths of the plurality of ridge portions 24D and 344E are the same, but the lengths and widths of the plurality of ridge portions need not necessarily be the same. The length or width may be different in all or a part of the ridges. The same applies to the groove portions 24E and 344F, and the length or width may be different in all or part of the plurality of groove portions. Of course, the same applies to the lengths and widths of the convex portions and the concave portions.

(E) In the above embodiment, the ridges and grooves are provided over the entire area along the circumferential direction of the shaft. However, only a small portion of the shaft in the circumferential direction has the ridges and grooves. May not exist.

In addition, in the above-described embodiment, the convex portion and the concave portion are provided in the entire area along the circumferential direction of the opening forming portion, but the convex portion and the concave portion do not exist in a small portion in the circumferential direction of the opening forming portion. May be

(F) In the above-described embodiment, the shaft portions 24A, 73B, 344B have a general shape of the outer peripheral portion in the cross-section orthogonal to the axis (this "general shape" is a shape assuming that there are no ridges or grooves). However, the shape of the shaft is not limited to this. Therefore, for example, the outline of the outer peripheral portion of the shaft portion in the cross section orthogonal to the axis may be triangular, rectangular, polygonal, elliptical, or the like. Further, the general shape of the opening forming portion in the cross section orthogonal to the axis is not limited to the circular shape, and various shapes such as a rectangular shape and an elliptical shape can be adopted.

(G) In the above embodiment, the bath 100 is illustrated as the bath, but the bath to which the technical idea of the present invention can be applied is not limited to the bath. Therefore, for example, the technical idea of the present invention may be applied to a washbasin, a sink, and the like.

(H) In the above-described embodiment, the operating devices 3 and 7 are attached to the bathtub 100, but the object to which the operating devices are attached is not limited to this. For example, the operating device may be attached to a tank body other than the bathtub, or the operating device may be attached to a structure provided near the tank body (for example, a counter of a sink or a back guard of a vanity). May be

(I) In the above embodiment, the plug lid 25 (packing portion 25B) is configured to close the drainage port 103 by contacting the drainage port member 21, but the plug lid 25 (packing portion 25B) is a bathtub. The drain port 103 may be closed by contacting 100 (bottom wall portion 101).

(J) In the above embodiment, the lock mechanism and the returning force applying portion are provided in the support shaft mechanism 24, but the locking mechanism and the returning force applying portion may be provided in the operation side mechanisms 34, 73. Further, one of the lock mechanism and the return force applying portion may be provided in the support shaft mechanism 24, and the other of the lock mechanism and the return force applying portion may be provided in the operation side mechanisms 34, 73.

DESCRIPTION OF SYMBOLS 1... Drain plug device, 24A, 73B, 344B... Shaft part, 24B, 73A, 341... Outer peripheral side part, 24C, 73C, 341G... Opening part, 24D, 73D, 344E... Ridge part, 24E, 73E, 344F... Groove portion, 24F, 73F, 341H... Opening forming portion, 24G, 73G, 341L... Convex portion, 24H, 73H, 341M... Recessed portion, 25... Stopper lid, 100... Bathtub (tub body), 103... Drainage port, 341N... Opening Adjacent parts, 74, 344... Operated parts.

Claims (5)

A vertically movable stopper lid provided at the drainage port of the tank body,
A rod-shaped shaft portion to which the stopper lid is attached at one end,
An outer peripheral side portion having an opening through which the shaft portion is inserted,
The shaft portion is a drain plug device configured to be movable with respect to the outer peripheral side portion along the axial direction thereof,
At least the outer peripheral surface of the shaft portion that passes through the opening,
A ridge extending along parallel towards direction and the axial direction of the shaft portion,
Adjacent to the ridge portion, a groove portion extending parallel to the ridge portion is formed,
The ridge portion and the groove portion are provided alternately in plural over substantially the entire region along the circumferential direction of the shaft portion,
The outer peripheral side portion has an annular opening forming portion that forms the opening portion,
In the opening forming part,
A recess corresponding to the ridge,
Adjacent to the concave portion, a convex portion corresponding to the groove portion is formed,
The concave portions and the convex portions are alternately provided in a plurality in substantially the entire area along the circumferential direction of the opening forming portion,
The drain plug device, wherein the protruding portion is arranged or close to the concave portion, and the convex portion is arranged or close to the groove portion. An operated part for operating the stopper lid provided at the drainage port of the tank body,
A rod-shaped shaft portion to which the operated portion is attached at one end,
An outer peripheral side portion having an opening through which the shaft portion is inserted,
The shaft portion is a drain plug device configured to be movable with respect to the outer peripheral side portion along the axial direction thereof,
At least the outer peripheral surface of the shaft portion that passes through the opening,
A ridge extending along parallel towards direction and the axial direction of the shaft portion,
Adjacent to the ridge portion, a groove portion extending parallel to the ridge portion is formed,
The ridge portion and the groove portion are alternately provided in plural over substantially the entire region along the circumferential direction of the shaft portion,
The outer peripheral side portion has an annular opening forming portion that forms the opening portion,
In the opening forming part,
A concave portion corresponding to the protruding portion,
Adjacent to the concave portion, a convex portion corresponding to the groove portion is formed,
The concave portion and the convex portion are alternately provided in a plurality in substantially the entire area along the circumferential direction of the opening forming portion,
The drain plug device, wherein the protruding portion is arranged or close to the concave portion, and the convex portion is arranged or close to the groove portion. The drain plug device according to claim 1 or 2, wherein the protruding portion is disposed in the recess. A relative positional relationship between the concave portion and the ridge portion arranged or close to the concave portion along the circumferential direction of the shaft portion, and arranged or close to the groove portion and the groove portion along the circumferential direction of the shaft portion. The drain plug device according to any one of claims 1 to 3, further comprising a positioning portion that keeps the relative positional relationship of the convex portions constant. The outer peripheral side portion is adjacent to the opening portion, and has an annular opening adjacent portion located on the one end side of the shaft portion,
The drain opening device according to any one of claims 1 to 4, wherein the opening adjoining portion has a tapered surface that gradually moves away from the shaft portion toward the other end side of the shaft portion. ..

Images