JPH08277559A - Drain plug for water tank such as bathtub - Google Patents

Abstract

PURPOSE: To use components in rubber plug type an pop-up type drain plug devices in common and decrease the number of the kinds of require parts, to reduce cost and to prevent the damage of a mechanical box generated in the pop-up type drain plug simultaneously. CONSTITUTION: Arms 48 to be engaged projected towards the central direction are formed to the inner circumferential surface of the lower half section of a drain cylinder member 28 constituting a drain hole while engaging arms 54 extended in the radial direction are fitted onto the outer circumferential surface of a housing 50 for a mechanical box, into which a position holding mechanism for holding a frame body 52 at an open place or a closed place is incorporated, and the engaging arms 54 are engaged with the arms 48 in a fitting manner, thus mounting the mechanical box into the drain cylinder member 28. When a rubber drain plug is structured, cross-shaped fitting members with the engaging arms 54 are inserted into the arms 48 in place of he mechanical box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain plug device for opening and closing a drain port at the bottom of a water tank such as a bathtub or washbasin.

[0002]

2. Description of the Related Art A drain outlet and a drain plug device for opening and closing the drain outlet are provided at the bottom of a bathtub. What has been conventionally used as this drain plug device is generally one using a rubber plug (rubber plug) as shown in FIG. 10 (A).

Specifically, this drain plug device has a cylindrical shape, and a drain pipe member 202 having an outwardly facing flange 200 formed at an upper end thereof is fitted into an opening 206 of a bath bottom portion 204 from the upper side to form the flange 200. Is seated on the upper surface of the bottom portion 204, and on the lower side of the bottom portion 204, the cylindrical fixing member 208 is screwed onto the male screw 212 on the outer peripheral surface of the drainage tubular member 202 with the female screw 210 on the inner peripheral surface, thereby draining water. The drainage tubular member 202 is fixed to the bath bottom portion 204 such that the flange 200 of the tubular member 202 and the flange 214 at the upper end of the fixing member 208 sandwich the bath bottom portion 204 from above and below.

Here, a cross-shaped crossing portion 216 is formed in the inner lower half portion of the drainage tubular member 202. Crossover 216
Has a function of preventing large foreign matters from being discharged through the drainage port, and the drainage tube member 202 and the fixing member 2
08 has a role as an engaging portion of a tool when screwing.

Thus, in the case of this drain plug device, the rubber plug 2
The drainage port is closed by fitting 18 into the upper end opening of the drainage tube member 202, and the drainage port is opened by lifting the rubber plug 218 by pulling up the chain 220.

On the other hand, as the drain plug device, the one shown in FIG. 10 (B) is also used. This drain plug device is a so-called pop-up drain plug device, and is shown in FIG.
Similar to the rubber plug type of (A), it has a drainage tube member 222 and a fixing member 224, and these are each flange 20.
At 0 and 214, the bath bottom portion 204 is fixed so as to sandwich it vertically.

In the case of this drain plug device, the drain tube member 222
A cylindrical portion 226 is provided inside the. Cylindrical part 226
A pair of connecting arms 227 are formed so as to project at two positions separated by 180 ° on the outer peripheral surface of the cylindrical portion 226 by the connecting arms 227.
It is connected to the inner wall of the.

Reference numeral 228 denotes an operation force transmission member 246 which will be described later.
A position holding mechanism 248 (see FIG. 12) that raises and lowers the working rod 230 based on the operating force transmitted by the control unit (see FIG. 11) to hold the plug 240 in the raised position (open position) and the lowered position (closed position). It is a mechanical box having a built-in, and has a cylindrical housing.

A pair of fixed parts 232 made of projecting pieces are formed on the upper end of the housing, and these fixed parts 232 are fixed by screws 234 in the state where the housing is fitted inside the cylindrical part 226. The upper surface of the connecting arm 227 is screwed and fixed.

On the other hand, a tubular branch portion 242 is formed on the fixing member 224 so as to project laterally, and one end portion of a protective cylinder 244 is connected to the tubular branch portion 242. Inside the protective cylinder 244, as shown in FIG. 11, an operation force transmission member including a flexible outer tube 243 having rigidity in the axial direction and an inner wire slidably inserted therein. 246 is inserted. Thus, the outer tube 243 of the operating force transmission member 246 is fixed to the housing of the mechanical box 228 after the right end portion in the drawing is curved downward in a U shape, and the inner wire is inside the housing and the working rod. It is vertically movably inserted at a position corresponding to 230.

The protective cylinder 244 and the operating force transmission member 24
In the outer tube 243 in FIG. 6, the opposite ends are the flanges 24 of the bathtub, as shown in FIG.
5 is fixed to the lower surface of the push button 24, and an inner wire is arranged on the flange 245 so that the push button 24 can be moved up and down.
It is connected to 7.

In the case of this drain plug device, when the push button 247 is pushed down once, the plug 240 is raised and held at the raised position (open position), and then the push button 247 is pushed once again. When is pushed, the plug 240 is lowered and held in the closed position.

FIG. 12 specifically illustrates the position holding mechanism 248. However, since this position holding mechanism 248 is a conventionally known one, its operation will be briefly described here. As shown in the figure, this position holding mechanism 24
Reference numeral 8 denotes a fitting groove 252 vertically formed on the protruding portion 250 on the inner surface of the housing, a serrated engaging tooth 254 circumferentially formed along the upper end surface of the protruding portion 250, and an action rod 230. A fixed ring 260 fixedly mounted on the fixed ring 260, a protruding portion 262 protruding from the outer peripheral surface of the fixed ring 260 and capable of being fitted into the fitting groove 252, and a sawtooth shape formed in two steps on the upper end surface of the protruding portion 262. Of the engaging teeth 264, 266 and the rotating ring 268 rotatably fitted on the working rod 230
And a projecting portion 270 projectingly provided on the outer peripheral surface of the rotating ring 268 and capable of being fitted into the fitting groove 252, and a projecting portion 270.
Sawtooth-shaped engaging teeth 272, 274 formed on the lower end surface between the lower end surface and the protruding portion 270, and a stopper 276 fixed to the working rod 230 with a predetermined space above and below the rotating ring 268. And have.

Thus, in the case of this position holding mechanism 248, when the action rod 230 is pushed up by the push-up movement of the inner wire in the operation force transmission member 246, the fixed ring 260 and the protrusions 262 of the rotary ring 268 are pushed.
Each 270 is lifted together.

Then, as shown in (C) and (II) of the same drawing, when these projecting portions 262 and 270 reach above the engaging teeth 254 on the housing side, the inclined cam surfaces of the engaging teeth 266 and 272 are formed. By the action, the rotating ring 268 is rotated by a slight angle.

After that, when the applied operating force is removed, the plug 240 and the working rod 230 are moved down by a minute stroke due to their own weight. At this time, the engaging teeth 272 of the rotating ring 268 are located on the protruding portion 250 side of the housing. Engaging teeth 25
4 to prevent further lowering. Here, the stopper 240 is held in the open position (state (III)).

When the push button 247 is pushed once again from the state of (III), the rotating ring 268 acts on the cam surfaces of the engaging teeth 266 and 274 as shown in (IV). In addition, the protrusion 270 of the rotating ring 268 reaches a position where the protrusion 270 of the rotary ring 268 coincides with the fitting groove 252, and the protrusion 270 moves downward along the fitting groove 252 ((( B) (state of I)). That is, the holding of the open position with respect to the plug 240 is released, and the plug 240 is moved downward at this point to close the drain port.

[0018]

As described above, two types of conventional drain plug devices for bathtubs have been used in combination,
Therefore, it is necessary to provide two types of drain pipe members as constituent parts of the drain plug device in the bathtub, and there is a problem that inventory management and required cost increase accordingly.

In the latter case of the pop-up type drain plug device, as shown in FIG. 11, the operating force transmission member 246 is used.
The lower curved portion of the drainage port is exposed to the outside and protrudes downward from the fixing member 224. Therefore, when the bathtub is carried into the construction site or installed at the site, it is installed. The operation force transmission member 246 is rubbed or pushed upward by a surface or a block supported between the installation surface and the bottom of the bathtub, which causes a large upward impact force on the mechanical box 228. Therefore, the mechanical box 228 was damaged.

In addition, in the latter case of the pop-up type drain plug device, a screw 234 is required when mounting the mechanical box 228.
Therefore, this has to be fixed to the drain pipe member 222, and there is a problem that the mounting work is troublesome.
Although the bathtub has been described above as an example, the same applies to the drain plug device in the washbasin.

[0021]

The invention of the present application has been made to solve such a problem. Thus, the drain plug device of the invention of the present application has (A) a cylindrical shape, a male screw is formed on the outer peripheral surface thereof, and an outward flange is formed on the upper end thereof, and the flange is formed at the opening of the bottom of the water tank such as a bathtub. And a drainage tube member that is fitted in a state in which the seat is seated on the bottom surface, (B)
A fixing member that is screwed to the male screw of the drainage tubular member below the bottom of the water tank, and that fixes the drainage tubular member to the bottom of the water tank by sandwiching the bottom with the flange, and (C) the upper end opening of the drainage tubular member. And (D) in the lower half portion of the drainage tube member, projecting from a predetermined plurality of positions in the circumferential direction of the inner peripheral surface toward the central portion and not reaching the central portion. A plurality of engaged arms that are formed to extend,
(E) (a) An engaging arm corresponding to the engaged arm has a form extending in the radial direction from a central portion, and the engaging arms engage with the engaged arm in a fitting manner. A fitting member which is formed into a shape and is wholly held inside the drain pipe member, or (b) (a) a housing which is inserted into the space at the center of the drain pipe member surrounded by the engaged arms. When,
The outer upper part is vertically movably inserted into the housing so that the vertical movement of the plug raises and lowers the plug between an open position in which the plug is lifted from the upper end opening of the drain and a closed position in which the plug is seated. A flexible operating force transmission member formed of a combination of an outer tube and an inner wire from the lower outer side of the housing, and is inserted into the housing at a position where the inner wire corresponds to the working rod. While being penetrated, a holding mechanism for alternately holding the working rod in an ascending position or a descending position each time the inner wire distal end is moved up and down is built into the housing, and further from the outer peripheral surface of the housing. A mechanical box in which the engaging arm extends in the radial direction at a position corresponding to the engaged arm, and (b) a large upward impact. The mechanical box can be lifted up by the action of and the mechanical box cannot be moved upward under the upward operating force that is normally applied via the operating force transmitting member, and the mechanical box is fixed to the engaged arm. And any one of elastic coupling means for elastically coupling with each other (claim 1).

According to another aspect of the present invention, in the apparatus according to claim 1, the engaging arm has a pair of downward hanging wall portions and an upper wall portion connecting upper ends of the hanging wall portions. There is a downward fitting groove that is fitted to the engaged arm between them, and the elastic coupling means further connects a pair of downwardly extending elastic arms and upper ends of the elastic arms. A coupling portion, which is elastically fitted onto the engagement arm downward from the upper side thereof, and protrudes inward from the pair of elastic arms at a lower portion of the lower surface of the engaged arm, It is characterized in that it is an elastic clip in which an engaging claw that elastically engages is formed on the lower surface of the engaged arm.

According to a second aspect of the present invention, in the apparatus according to the second aspect, the engaging arms are made of a resin material, and a notch is formed on the base end side of the pair of hanging wall portions so that the hanging arms extend vertically. The wall portions are elastic portions, and engaging claws that project inward and engage with the lower surface of the engaged arm are integrally formed at lower portions of the lower surface of the engaged arm in the hanging wall portions. (Claim 3).

According to still another aspect of the present invention, in the apparatus according to claim 1, a longitudinal slit is formed at a tip end of the engaged arm protruding toward the center, and the engaging arm is provided with: A protrusion that fits into the slit is formed (claim 4).

[0025]

As described above, according to the first aspect of the invention, a plurality of engaged arms projecting toward the center from the inner peripheral surface of the drainage tube member and having a length that does not reach the center portion are projected on the drainage tube member. Then, a fitting member having a shape in which the engaging arm extends in the radial direction from the central portion is engaged with the engaged arm in a fitted state, or in the radial direction from the outer peripheral surface of the housing of the mechanical box. According to the present invention, the mechanical box is held inside the drainage tubular member by engaging the engaging arm extending to the engaged arm with the engaged arm. A common drain member can be used for any of the pop-up type drain plug devices.

As a result, in these two types of drain plug devices, the drain pipe member as a component can be made common, the number of necessary components can be reduced, and the required cost can be reduced.

Further, in the present invention, when the drain plug device is configured as a pop-up type drain plug device, the mechanical box causes drainage by the engagement between the engaging arm and the engaged arm and the elastic force by the elastic coupling means. Since it is attached to the tubular member, and the elastic coupling means can raise the mechanical box under a large impact force, the upward thrust force on the operation force transmission member is shocking when carrying in or constructing a bathtub or the like. It is possible to avoid damaging the mechanical box even if it acts on. In addition, according to the present invention, since it is not necessary to fix the mechanical box to the drain pipe member with the screw member, there is an advantage that the mechanical box mounting work is simplified.

According to a second aspect of the present invention, the engaging arm has a downward fitting groove so that the engaging arm is fitted into the engaged arm in the fitting groove, and the drain plug device is of a pop-up type. In the case of a drain plug device, an elastic clip having a pair of elastic arms and inward engaging claws formed on the elastic arms is used as the elastic coupling means. When the drainage plug device is configured as a pop-up type drainage plug device while the insertion member or the mechanical box can be easily attached to the drainage cylinder member, the inward engaging claw and the engaged arm in the elastic clip are Based on the engaging action with the lower surface of the mechanical box, it is possible to properly prevent the mechanical box from floating upward due to the upward operating force that is normally applied to the mechanical box. Can.

On the other hand, when a large impact force is applied to the mechanical box in an upward direction during construction of a bathtub or the like, the elastic clip and the engaged arm are forcibly released from the mechanical box to lift the mechanical box. This is acceptable, and thus the mechanical box can be well prevented from being damaged by the upward impacting force.

According to a third aspect of the present invention, notches are formed on the base end side of the hanging wall portion of the engaging arm to form the hanging wall portions as elastic portions, and at the lower portion of the hanging wall portion. According to the present invention, an inward engaging claw is formed so as to engage with the lower surface of the engaged arm. According to the present invention, the elastic clip is used when the mechanical box is attached to the drain pipe member. Can be omitted, the number of parts can be further reduced, and the mechanic box mounting work can be further simplified.

According to a fourth aspect of the present invention, a vertically oriented slit is formed in the engaged arm, and a protrusion corresponding to the slit is formed in the engaging arm, and the protrusion is fitted into the slit, whereby the fitting is performed. The member or the mechanical box is attached to the drain pipe member, and according to the present invention, there is an advantage that the inside of the drain pipe member has a good appearance.

When the slit is provided in the engaged arm in this way, there is a problem that both sides of the slit in the engaged arm become thin and the strength is weakened. However, according to claim 2 or 3, When the fitting member or the mechanical box is engaged with the engaged arm, it is not necessary to provide such a slit, so that there is an advantage that the strength of the engaged arm can be increased.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 2, reference numeral 10 denotes a bath, which has an outwardly facing flange 14 at the upper end of the main body 12 and a bottom 16
A drain port 18 and a drain plug device 20 are provided in the.
Legs 22 are formed so as to project downward from the lower surface of the bottom portion 16, and these legs 22 are installed via a block 24 on an installation surface 26 made of earth concrete or the like.

FIG. 1 specifically shows the construction of the drain plug device 20. In FIG. 1, reference numeral 28 denotes a cylindrical drainage tubular member, in which a male screw 30 is formed on the outer peripheral surface and an outward flange 32 is formed on the upper end, and the flange 32 is seated on the upper surface of the bath bottom 16. And is fitted from above into the opening 34 formed in the bottom portion 16.

Reference numeral 36 is a fixing member arranged below the bath bottom 16 and has a cylindrical shape in this example. A female screw 40 is formed on the inner peripheral surface of the fixing member 36, and an outward flange 38 is formed on the upper end thereof, and this flange 38, together with the flange 32 of the drain pipe member 28, sandwiches the bath bottom 16 from above and below. The female screw 40 is screwed into the male screw 30 of the drain pipe member 28 from below.

A tubular branch portion 42 protruding laterally is formed on the fixing member 36, and the end portion of the protective cylinder 44 is connected thereto as shown in FIG. This protective cylinder 4
An operation force transmission member 51 including a flexible outer tube 46 having rigidity in the axial direction and an inner wire 49 slidably inserted therein is accommodated in the inside of the unit 4. The operation force transmission member 51 is connected to a mechanical box 228, which will be described later, after the right end portion in the drawing is curved in a U shape inside the fixing member 36.

The portion of the drainage cylinder member 28 that continues below the upper end opening (drainage port 18) is a tapered surface 47 that approaches the center as it goes downward. Further, on the lower side of the tapered surface 47 and on the inner side of the lower half of the drainage tube member 28, there is provided a plate-shaped engaged arm 48 extending in a protruding manner from the inner peripheral surface toward the center. It is arranged at an appropriate number of places (in this example, four places separated by 90 °).
In this example, the lower half portion of the drain pipe member 28 is made of resin, and the engaged arm 48 is formed integrally with the cylindrical peripheral wall portion.

The engaged arms 48 have a length that does not reach the center, and the housing 50 of the mechanical box 228 is located between the tips of the engaged arms 48, that is, at the center of the drainage cylinder member 28. A space is secured that fits snugly.

This mechanical box 228 is shown in FIG.
In the same form as that shown in FIG. 12, the action rod 230 penetrates into the housing 50 from the outer upper part so as to be vertically movable, and the inner wire 49 of the operation force transmitting member 51 acts from the outer lower part. Rod 23
It is vertically movably penetrated at a position corresponding to 0. And due to the upward movement of the inner wire 49,
The working rod 230 is adapted to be pushed upward.

The housing 50 of this mechanical box 228
The position holding mechanism 248 described above is built in the inside, and the distal end portion of the outer tube 46 of the operating force transmission member 51 is fixed to the lower end portion of the housing 50.

A female screw hole is formed at the upper end of the working rod 230, and a male screw shaft 53 projecting downward from the lower surface of the central portion of the plug 52 is screwed into the female screw hole. The stopper 52 can be vertically moved together.

Housing 5 in mechanical box 228
A resin-made engagement arm 54 is integrally formed with the housing 50 on the outer peripheral surface of 0. These engagement arms 54
Extend radially from the outer peripheral surface of the housing 50 at a position corresponding to the engaged arm 48.

Each of the engaging arms 54 has a vertically extending vertical wall portion 56 and a top wall portion 58 connecting the upper ends of the vertical wall portions 56 to each other. It has a downward fitting groove 61. The engaging arms 54 connect the housing 50 to the drain pipe member 2
In the state of being completely fitted into the space of the central portion of 8, the fitting arms 61 are fitted into the engaged arms 48 from above and are supported by the engaged arms 48.

Reference numeral 59 denotes an elastic clip as an elastic connecting means which is fitted downwardly on the engaging arm 54 to elastically connect the engaging arm 54 and the engaged arm 48 of the drainage tube member 28. A pair of elastic arms 60 extending parallel to each other in the vertical direction, a connecting portion 62 connecting the upper ends of the elastic arms 60, and a lower end portion of the engaged arm 48 from the lower end portion of the elastic arm 60. It has an elastic engaging claw 64 protruding inward.

These elastic clips 59 engage the mechanical box 228 with respect to the engaged arm 48 by engaging the elastic engaging claw 64 with the lower end surface of the engaged arm 48 as shown in FIG. It acts to fix with a certain elastic force.

That is, in these elastic clips 59, the mechanical box 228 is engaged with the engaged arm 48 depending on the upward pushing force of the inner wire 49 of the operating force transmitting member 51.
On the other hand, when a large upward impact force is applied to the operation force transmission member 51, specifically, the U-shaped curved portion, the elastic force that allows the mechanical box 228 to rise is fixed. Mechanical box 228 that takes under
Is elastically coupled to the engaged arm 48. The elastic force in the elastic clip 59 is so preselected.

In the case of the drain plug device 20 of this embodiment, the engaging arm 54 formed integrally with the housing 50 of the mechanical box 228 is fitted into the engaged arm 48 of the drain pipe member 28 to be engaged, and By simply fitting the elastic clip 59 from the upper side of the engaging arm 54, the mechanical box 228 can be easily mounted inside the center of the drain pipe member 28.

Then, the push button 45 under the mounted state
When the pushing operation is performed (see FIG. 2), the distal end portion of the inner wire 49 in the operating force transmission member 51 is moved to the mechanical box 22.
8, the working rod 230 is pushed up to open the plug body 52, and the position hold mechanism 248 provided inside the mechanical box 228 holds the plug body 52 in its open position. Next, when the push button 45 is pushed again, the plug 52 is lowered together with the working rod 230 and is held in the closed position.

FIGS. 4 and 5 show an example in which the drain plug device is configured as a rubber plug drain plug device 66 different from the pop-up drain plug device 20.

As shown in the figure, in the drain plug device 66, the drain pipe member 28 similar to the pop-up type drain plug device 20 is used as the drain pipe member. As the fixing member, the fixing member 68 which does not have the tubular branch portion 42 of the pop-up type fixing member 36 is used. The other points of the fixing member 68 are the same as those of the fixing member 36 shown in FIG.

Reference numeral 70 is a fitting member having a cross shape as a whole, and four engaging arms 54 extend from the center in the radial direction. The form of each engagement arm 54 is similar to that shown in FIG.

The fitting member 70 has a fitting groove 61 facing downward.
At, in the drainage tube member 28, the engaged arm 48 is fitted and held from above.

Reference numeral 72 is a rubber stopper, and a chain 73 is connected to the upper surface thereof. The rubber plug 72 is the drain member 2
8 is fitted to the drain port 18 and the tapered surface 46 to close the drain port 18.

As described above, according to this embodiment, the common drain pipe member 28 can be used for both the pop-up type drain plug device 20 and the rubber plug type drain plug device 66. This allows these two types of drain plug devices 2
In Nos. 0 and 66, the drain pipe member as a component can be shared, the number of types of required components can be reduced, and the required cost can be reduced.

Further, in the present embodiment, when the drain plug device is constructed as the pop-up type drain plug device 20, the mechanical box 228 serves as an engaging and elastic coupling means for the engagement arm 54 and the engaged arm 48. The elastic clip 59 is attached to the drain pipe member 28 by the elastic force, so that the elastic clip 59 is mechanically attached to the mechanical box 228 under a large impact force.
Therefore, it is possible to prevent the mechanical box 228 from being damaged even when the upward thrust force acts on the operation force transmission member 51 shockingly when the bathtub is carried in or constructed.

Further, in this example, it is not necessary to fix the mechanical box 228 to the drain pipe member 28 with a screw member, so that the mechanical box 228 can be easily mounted.

Further, in this example, by appropriately controlling the elastic force of the elastic clip 59, there is an advantage that the elastic coupling force of the mechanical box 228 with respect to the drain pipe member 28 can be properly and easily adjusted.

Further, in the case of this example, since the fitting groove 61 in the engaging arm 54 is a downward groove, there is an advantage that water, dirt, etc. do not adhere and accumulate inside the groove. In addition, the engaged arm 54 has the advantage that the engaged arm 48 formed on the drain pipe member 28 can be hidden from the upper side, and the appearance can be improved.

In addition, since it is not necessary to form a slit-shaped groove or the like in the engaged arm 48, the engaged arm 48
Can be thicker and its strength can be stronger.

6 and 7 show another embodiment of the engaged arm and the corresponding engaging arm and elastic coupling means. In the drawing, a notch portion 76 is formed at the base end side of the vertical wall portion 56 of the engaging arm 74 formed integrally with the housing 50 of the mechanical box 228, and the vertical wall portion 56 as a whole is an elastic portion. An engaging claw 78 protruding inward is integrally formed on the inner surface side of the hanging wall portion 56, that is, on the fitting groove 61 side.

On the other hand, the engaged arm 80 of the drainage cylinder member 28 is provided with an engaged recess 82 near the lower end thereof, and the engaging arm 74 engages with the engaged recess 82. The mating claw 78 is adapted to be elastically engaged. Reference numeral 83 is a fitting member in the case of configuring a rubber plug type drain plug device, and each engaging arm 74 is provided with a notch portion 76 and an engaging claw 78.

In the case of this example, when the mechanical box 228 is mounted on the drainage cylinder member 28, the elastic clip 59 as shown in FIG. 1 is not required, so that the number of parts can be further reduced and the mechanism can be further reduced. There is an advantage that the mounting work of the box 228 is further simplified.

FIG. 8 shows still another embodiment of the present invention. In this example, the engaged arms 84 are provided on the inner peripheral surface of the drainage cylinder member 28 and at three positions separated by 120 ° in the circumferential direction. To form a bottom 86 at each tip of the engaged arms 84.
While forming a slit 88 with a mechanical box 22
The corresponding three projecting engagement arms 90 are integrally formed on the outer peripheral surface of the housing 50 of No. 8, and these projecting engagement arms 90 are fitted into the slits 88 from the upper side, and the mechanical box 228 is drained. It is adapted to be attached to the member 28.

In this case, the mechanical box 228 fitted in the drainage cylinder member 28 is provided with the protruding engagement arm 9
It may be elastically coupled to the engaged arm 84 with an elastic clip as shown in FIG. Alternatively, it may be elastically coupled by another elastic coupling means.

Reference numeral 92 in FIG. 8 denotes a fitting member in the case of constructing a rubber plug type drain plug device, and the fitting members 12 are arranged from the central portion to each other.
Three engaging arms 93 extending radially at an angle of 0 °
have. Each engaging arm 93 has a mechanical box 2
Projections 94 having the same shape as the projection-like engagement arm 90 formed on the 28 are formed, and these projections 94 are adapted to be fitted into the slits 88 of the drain pipe member 28.

That is, on the mechanical box 228 side, the entire engaging arm 90 is formed by a projection, but in the case of the fitting member 92, a projection 94 is formed at the tip of each engaging arm 93. The thickness of the base end portion of each engagement arm 93 is the same as that of the engaged arm 84.

In this example, three engaged arms 84 and three engaging arms 90 and 93 are provided at 120 ° intervals, but as shown in FIG. 9, four or more are provided at 90 ° intervals. It is also possible to set the number of.

Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be applied to a drain plug device in a water tank other than a bathtub, etc. within a range not departing from the gist thereof. It can be configured with various changes.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a pop-up type drain plug device configured according to an embodiment of the present invention.

FIG. 2 is an overall view of a bathtub including the drain plug device of FIG.

3 is a cross-sectional view of the drain plug device of FIG.

4 is an exploded perspective view showing a configuration of a rubber plug type drain plug device corresponding to the pop-up drain plug device of FIG. 1. FIG.

5 is a cross-sectional view of the drain plug device of FIG.

FIG. 6 is an exploded perspective view showing a configuration of a pop-up type and rubber plug type drain plug device configured according to another embodiment of the present invention.

7 is a cross-sectional view of the pop-up type drain plug device in FIG.

8A and 8B are a perspective view and a plan cross-sectional view of essential components of a pop-up type and rubber plug type drain plug device configured according to another embodiment of the present invention.

FIG. 9 is a view showing the forms of a drainage cylinder member and an engaged arm used in another embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a configuration of a conventional pop-up type and rubber plug type drain plug device.

11 is a diagram showing the configuration of the pop-up type drain plug device of FIG. 10 together with the configuration of an opening / closing device including a push button.

12 is an explanatory view showing a position holding mechanism inside the mechanical box in FIG.

[Explanation of symbols]

 10 Bathtub 16 Bottom part 18 Drainage port 20,66 Drainage plug device 28 Drainage tube member 30 Male screw 32 Flange 34 Opening 36 Fixing member 46 Outer tube 48,80,84 Engagement arm 49 Inner wire 50 Housing 51 Operating force transmitting member 52, 72 Plugs 54, 74, 90, 93 Engaging Arms 56 Vertical Walls 58 Upper Walls 59 Elastic Clips 60 Elastic Arms 61 Fitting Grooves 62 Couplings 64 Elastic Engaging Claws 70, 92 Fitting Members 76 Notches 78 Synthetic claw 82 Engagement concave portion 88 Slit 94 Protrusion 228 Mechanical box 230 Working rod

Claims (4)

[Claims] (A) A cylindrical shape having a male screw formed on an outer peripheral surface and an outward flange formed on an upper end portion,
A drainage tubular member which is fitted into an opening at the bottom of a water tank such as a bathtub so that the flange is seated on the top surface of the bottom portion; A fixing member for sandwiching and fixing the drainage tubular member to the bottom of the water tank, (C) a plug body for closing the upper end opening of the drainage tubular member, and (D) a lower half portion of the drainage tubular member of the inner peripheral surface thereof. A plurality of engaged arms projectingly formed from a plurality of predetermined positions in the circumferential direction toward the center and not reaching the center, and (E) (a) corresponding to the engaged arms The engaging arms are formed to extend radially from the central portion, and the engaging arms are adapted to engage with the engaged arms in such a manner that they are entirely retained inside the drainage tube member. Fitting member or (b) (a) the engaged arm A housing which is inserted into the space of the central portion of the drainage tube member surrounded by, the penetration vertically movably than its outer upper inside said housing,
It has an action rod that raises and lowers the stopper by an up and down movement between an open position in which the plug is lifted from the upper end opening of the drain and a closed position in which it is seated in the opening. The inner wire of a flexible operating force transmission member made of a combination of an outer tube and an inner wire is inserted into the housing at a position corresponding to the working rod, while the inner wire distal end is provided inside the housing. A holding mechanism for alternately holding the working rod in a raised position or a lowered position for each one-time vertical movement of the housing, and the engaging arm radiates from the outer peripheral surface of the housing at a position corresponding to the engaged arm. And a mechanical box having a shape extending in the direction (b) capable of lifting the mechanical box by the action of a large upward impact force and transmitting the operating force. One of elastic coupling means for elastically coupling the mechanical box to the engaged arm so as not to move the mechanical box upward under an upward operating force that is usually applied via a member. A drain tap device for a water tank such as a bathtub, which is characterized by including it. 2. The engaging arm according to claim 1,
It has a pair of downward wall parts and an upper wall part that connects the upper ends of the vertical wall parts, and has a downward fitting groove that is fitted to the engaged arm between them. Further, the elastic coupling means has a pair of downwardly extending elastic arms and a connecting portion for connecting the upper ends of the elastic arms, and is elastically fitted onto the engaging arm downward from above. And an elastic clip formed with an engaging claw that protrudes inward from the pair of elastic arms and elastically engages the lower surface of the engaged arm at a lower portion of the lower surface of the engaged arm. A drain plug device for a water tank such as a bathtub. 3. The hanging wall portion according to claim 2, wherein the engaging arm is made of a resin material, and a cutout portion is formed at a base end side of the pair of hanging wall portions, thereby forming the hanging wall portions as elastic portions.
Further, an engaging claw that projects inward and engages with the lower surface of the engaged arm is integrally formed at a lower portion of the lower surface of the engaged arm in the hanging wall portions. Drainage plug device for water tanks such as bathtubs. 4. The slit according to claim 1, wherein a longitudinal slit is formed at a tip end of the engaged arm projecting toward the center side, and a projection fitted into the slit is formed on the engaging arm. A drain plug device for a water tank such as a bathtub.