JP3080353B2 - Drainage stopper device for water tanks such as bathtubs - Google Patents

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 a basin.

[0002]

2. Description of the Related Art At the bottom of a bathtub, a drain port and a drain plug device for opening and closing the drain port are provided. As a drain plug device conventionally used, a rubber plug (rubber plug) is generally used as a plug as shown in FIG. 10 (A).

[0003] Specifically, this drainage plug device is formed by fitting a drainage tube member 202 having a cylindrical shape and having an outwardly directed flange 200 formed at an upper end into an opening 206 of a bathtub bottom 204 from above. Is seated on the upper surface of the bottom portion 204, and under the bottom portion 204, the cylindrical fixing member 208 is screwed to the external thread 212 on the outer peripheral surface of the drainage cylinder member 202 with the female screw 210 on the inner peripheral surface, thereby draining the water. The drain cylinder member 202 is fixed to the bathtub bottom 204 such that the flange 200 of the cylinder member 202 and the flange 214 at the upper end of the fixing member 208 sandwich the bathtub bottom 204 from above and below.

[0004] Here, a cross-shaped crossing portion 216 is formed in the lower inner half of the drainage tube member 202. Intersection 216
Has a function of preventing large foreign substances from being discharged through the drain port, and has a function of preventing the drain cylinder member 202 and the fixing member 2 from being discharged.
It has a role as an engagement portion of a tool when screwing the 08 with the tool.

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

On the other hand, a drain plug device having the form shown in FIG. 10B is also used. This drain plug device is a so-called pop-up drain plug device.
As in the case of the rubber plug type of (A), it has a drainage tube member 222 and a fixing member 224,
At 0, 214, the bathtub bottom 204 is fixed so as to sandwich it vertically.

In the case of this drain plug device, the drain pipe member 222
Is provided with a cylindrical portion 226. Cylindrical part 226
A pair of connecting arms 227 protrude at two places 180 ° apart from each other on the outer peripheral surface of the cylinder.
Is connected to the inner peripheral wall of the.

228 is an operation force transmitting member 246 described later.
A position holding mechanism 248 (see FIG. 12) that raises and lowers the action rod 230 based on the operating force transmitted by (see FIG. 11) and holds the plug 240 at the raised position (open position) and the lowered position (closed position). Which has a cylindrical housing.

A pair of fixed portions 232 formed of projecting pieces are formed at the upper end of the housing. When the housing is fitted into the cylindrical portion 226, the fixed portions 232 are fixed by screws 234. The connecting arm 227 is screwed and fixed to the upper surface.

On the other hand, a tubular branch 242 is formed on the fixing member 224 so as to protrude laterally, and one end of a protective cylinder 244 is connected to the tubular branch 242. As shown in FIG. 11, an operation force transmitting member including a flexible outer tube 243 having rigidity in the axial direction and an inner wire slidably inserted therein is provided inside the protection tube 244. 246 have been inserted. The outer tube 243 of the operating force transmitting member 246 is fixed to the housing of the mechanical box 228 after the right end in the drawing is bent downward in a U-shape, and the inner wire is inserted inside the housing and the operating rod. At a position corresponding to 230, it penetrates so as to be able to move up and down.

The protection cylinder 244 and the operating force transmitting member 24
As shown in FIG. 11, the outer tubes 243 at the opposite ends of the outer tubes 243 have flanges 24 of the bathtub.
5 which is fixed to the lower surface of the push button 24 and has an inner wire disposed in the flange 245 so as to be able to move up and down.
7.

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

FIG. 12 specifically illustrates the position holding mechanism 248. However, since the position holding mechanism 248 is conventionally known, the operation thereof will be briefly described here. As shown in FIG.
8 is a fitting groove 252 formed in a vertical direction in the protruding portion 250 on the inner surface of the housing, a saw-toothed engaging tooth 254 formed in a circumferential direction along an upper end surface of the protruding portion 250, and an action rod 230. A fixing ring 260 fixed to the fixing ring 260, a protruding portion 262 protruding from the outer peripheral surface of the fixing ring 260 and capable of being fitted into the fitting groove 252, and a sawtooth shape formed in two steps on an upper end surface of the protruding portion 262. And the rotating ring 268 rotatably fitted to the working rod 230.
A protrusion 270 protruding from the outer peripheral surface of the rotating ring 268 and capable of being fitted into the fitting groove 252;
Saw-shaped engagement teeth 272 and 274 formed on the lower end surface between the lower end surface and the protruding portion 270, and a stopper 276 fixed to the action rod 230 at a predetermined vertical distance from the rotating ring 268. And

In the case of the position holding mechanism 248, when the operating rod 230 is pushed up by the push-up movement of the inner wire in the operating force transmitting member 246, the protrusions 262, 262 of the fixed ring 260 and the rotating ring 268 are pushed.
270 are each lifted together.

When the projections 262 and 270 reach above the engagement teeth 254 on the housing side, as shown in FIGS. By the action, the rotating ring 268 is rotated by a small angle.

Thereafter, when the applied operating force is removed, the stopper 240 and the operating rod 230 are lowered by a small stroke due to their own weight, and at this time, the engaging teeth 272 of the rotating ring 268 are moved toward the protruding portion 250 of the housing. Engagement teeth 25
4 and further lowering is prevented. Here, the stopper 240 is held at the open position (state (III)).

Next, when the push button 247 is pressed once again from the state of (III), as shown in (IV), the rotating ring 268 acts on the cam surfaces of the engaging teeth 266 and 274. After a further rotation by a certain angle, the projection 270 of the rotating ring 268 reaches a position matching the insertion groove 252 with the subsequent release of the pushing force, and the projection 270 descends along the insertion groove 252 (( B) (I) state). That is, the holding of the open position with respect to the plug 240 is released, and the plug 240 is moved downward to close the drain port.

[0018]

As described above, two types of drain plugs for bathtubs have conventionally been used in combination.
For this reason, two types of drainage cylinder members are required as components of the drainage plug device in the bathtub, and there is a problem that inventory management and required costs increase with this.

In the case of the latter pop-up type drain plug device, as shown in FIG.
The lower curved portion of the drain port in the above is in a state of being exposed to the outside and projecting below the fixing member 224. Therefore, when the bathtub is carried into the construction site or installed at the site, it is installed. The operating force transmitting member 246 is rubbed or pushed upward by a block or the like supported between the installation surface and the bottom of the bathtub, whereby a large upward impact force acts on the mechanical box 228. Therefore, there was a problem that the mechanical box 228 was damaged.

In addition, in the case of the latter pop-up type drain cock, when the mechanical box 228 is mounted, the screw 234 is used.
Therefore, this has to be fixed to the drainage pipe member 222, and there is a problem that the mounting work is troublesome.
Although the above description has been made with reference to the bathtub, the same applies to the drain plug device in the basin.

[0021]

The invention of the present application has been made to solve such a problem. Thus, the drainage plug device of the invention of the present application is (A) formed in a cylindrical shape, having an external thread formed on an outer peripheral surface and an outward flange formed on an upper end portion, and the flange is formed in an opening at the bottom of a water tank such as a bathtub. (B) a drainage tube member fitted so that it is seated on the bottom upper surface;
A fixing member screwed to an external thread of the drainage tube member below the bottom of the water tank and fixing the drainage tube member to the bottom of the water tank by sandwiching the bottom portion together with the flange; and (C) an upper end opening of the drainage tube member And (D) a lower half of the drainage tube member protruding from a predetermined plurality of locations in the circumferential direction of the inner peripheral surface toward the center and not reaching the center. A plurality of engaged arms extending and formed;
(E) (A) An engaging arm corresponding to the engaged arm has a form extending radially from a center portion, and the engaging arms engage with the engaged arm in a fitting manner. A fitting member which is configured and entirely held inside the drainage tube member, or (b) (a) a housing which is inserted into a space at the center of the drainage tube member surrounded by the engaged arms; When,
It is vertically movably penetrated into the inside of the housing from the upper outside thereof, and moves up and down between an open position in which the plug body is lifted from an upper end opening of the drainage cylinder and a closed position in which the plug is seated in the opening by its own up and down movement. And a flexible operating force transmitting member formed of a combination of an outer tube and an inner wire. On the other hand, the housing is internally provided with a holding mechanism for alternately holding the working rod in the ascending position or the descending position for each one elevating movement of the tip of the inner wire, and further from the outer peripheral surface of the housing. A mechanical box in which the engagement arm extends radially at a position corresponding to the engaged arm, and (b) a large upward impact The mechanism box can be lifted by the action of and the machine box cannot be moved upward under the upward operation force normally applied via the operation force transmitting member. And at least one of elastic coupling means for elastic coupling.

According to another aspect of the present invention, in the first aspect, the engagement arm has a pair of downwardly directed vertical walls and an upper wall connecting the upper ends of the vertical walls. There is a downward fitting groove fitted between the engaged arms to the engaged arm, and the elastic coupling means connects a pair of downward extending elastic arms and upper ends of the elastic arms. A connecting portion, which is elastically fitted outwardly downward from above the engaging arm, and projects inwardly from the pair of elastic arms at a lower portion of the lower surface of the engaged arm. An elastic clip having a form in which an engagement claw elastically engaged with a lower surface of the engaged arm is formed (claim 2).

According to still another aspect of the present invention, in the second aspect, the engaging arm is made of a resin material, and a notch is formed at a base end side of the pair of hanging walls, thereby forming the hanging arm. The wall portion is an elastic portion, and an engaging claw that protrudes inward and engages with the lower surface of the engaged arm is formed integrally with a lower portion of the lower surface of the engaged arm in the vertical wall portion. (Claim 3).

According to a still further aspect of the present invention, in the first aspect, a vertical slit is formed at a tip end of the engaged arm that protrudes toward the center, and the engaging arm includes: A projection is formed to fit into the slit (claim 4).

[0025]

As described above, according to the first aspect of the present invention, a plurality of engaged arms projecting toward the center from the inner peripheral surface of the drainage tube member and not reaching the center portion protrude from the drainage tube member. Formed on the engaged arm, and a fitting member in a form in which the engaging arm radially extends from the center portion is engaged with the engaged arm in a fitted state, or is radially extended from the outer peripheral surface of the housing of the radio box. According to the present invention, the mechanical box is held inside the drainage tube member by engaging the engagement arm extended to the engaged arm with the engaged arm. A common drainage tube member can cope with any of the pop-up type drain plug devices.

Thus, in these two types of drain plug devices, a drain pipe member as a component can be used in common, so that the types 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 is drained by the elastic force of the engagement between the engaging arm and the engaged arm and the elastic coupling means. Mounted on a cylindrical member, and the elastic coupling means allows the radio box to float under a large impact force. Can prevent the mechanical box from being damaged. In addition, according to the present invention, since it is not necessary to perform the operation of fixing the radio box to the drainage pipe member with the screw member, there is an advantage that the mounting operation of the radio box is simplified.

According to a second aspect of the present invention, the engaging arm has a form having a downward fitting groove, the fitting arm is fitted into the engaged arm in the fitting groove, and the drain plug device is a pop-up type. In the case of the drainage 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 device is configured as a pop-up type drainage plug device, the inward engaging claw and the engaged arm of the elastic clip can be easily attached to the drainage tube member. To prevent the mechanical box from being lifted upward by the upward operation force normally applied to the mechanical box based on the engagement action with the lower surface of the mechanical box. Can.

On the other hand, when a large upward impact force is applied to the radio box during the construction of a bathtub or the like, the engagement between the elastic clip and the engaged arm is forcibly released to lift the radio box. It can be tolerated, and thus can prevent the radio box from being damaged by an upward impact force.

According to a third aspect of the present invention, a notch is formed at the base end side of the vertical wall portion of the engaging arm, and the vertical wall portion is formed as an elastic portion. According to the present invention, an inward engaging claw is formed to be engaged with the lower surface of the engaged arm. Can be omitted, the number of parts can be further reduced, and the mounting operation of the radio box can be further simplified.

According to a fourth aspect of the present invention, a vertical slit is formed in the engaged arm, while a projection corresponding to the slit is formed in the engaging arm, and the projection is fitted into the slit. The member or the mechanical box is mounted on the drainage tube member. According to the present invention, the advantage that the inside of the drainage tube member has a good appearance can be obtained.

In the case where the slit is provided in the engaged arm as described above, there is a problem that both sides of the slit in the engaged arm are thin and the strength is weakened. When the fitting member or the mechanical box is engaged with the engaged arm, there is no need to provide such a slit, and therefore, 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 bathtub, which has an outward flange 14 at the upper end of the main body 12 and a bottom 16
Is provided with a drain port 18 and a drain plug device 20.
Legs 22 are formed so as to project downward from the lower surface of the bottom portion 16, and these legs 22 are installed on an installation surface 26 made of earth concrete or the like via a block 24.

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

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

The fixing member 36 is formed with a laterally projecting tubular branch portion 42, to which an end of a protective tube 44 is connected as shown in FIG. This protection tube 4
An operation force transmitting 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 tube 4. The operating force transmitting member 51 is connected to a later-described mechanical box 228 after the right end in the figure is curved in a U-shape inside the fixing member 36.

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

The length of the engaged arms 48 does not reach the center, and the housing 50 of the mechanical box 228 is provided between the tips of the engaged arms 48, that is, at the center of the drainage tube member 28. A space large enough to fit perfectly is secured.

This mechanical box 228 is similar to that shown in FIGS.
12, the operation rod 230 penetrates vertically into the housing 50 from the outside upper part, and the inner wire 49 of the operation force transmitting member 51 operates from the outside lower part. Rod 23
At a position corresponding to 0, it penetrates so as to be able to move up and down. Then, by the upward movement of the inner wire 49,
The working rod 230 can be pushed upward.

The housing 50 of the mechanical box 228
The above-described position holding mechanism 248 is built in, and the distal end of the outer tube 46 of the operation force transmitting member 51 is fixed to the lower end of the housing 50.

A female screw hole is formed at the upper end of the working rod 230, into which a male screw shaft 53 projecting downward from the lower surface of the center of the plug 52 is screwed. The plug body 52 can be moved up and down integrally.

Housing 5 in radio box 228
A resin engagement arm 54 is formed integrally with the housing 50 on the outer peripheral surface of the housing 50. 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 engagement arms 54 has a parallel hanging wall portion 56 hanging downward and an upper wall portion 58 connecting the upper ends of the hanging wall portions 56 to each other. It has a downward fitting groove 61. The engagement arms 54 connect the housing 50 to the drainage tube member 2.
8 is fitted into each engaged arm 48 from above in the fitting groove 61 and is supported by each engaged arm 48 in a state where it is completely fitted into the space of the central portion in FIG.

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

As shown in FIG. 3, the elastic clips 59 engage the elastic engaging claws 64 with the lower end surface of the engaged arm 48 to move the mechanical box 228 to the engaged arm 48. And has a function of fixing with a certain elastic force.

That is, these elastic clips 59 allow the mechanical box 228 to be engaged with the engaged arm 48 by the upward pushing force of the inner wire 49 of the operating force transmitting member 51.
When a large upward impact force acts on the operating force transmitting member 51, specifically, the U-shaped curved portion, a constant elastic force that allows the mechanical box 228 to float is provided. Radio box 228 underneath
Are elastically connected to the engaged arm 48. The elastic force at the elastic clip 59 is so pre-selected.

In the case of the drainage plug device 20 of the present embodiment, the engaging arm 54 formed integrally with the housing 50 of the mechanical box 228 is engaged with the engaged arm 48 of the drainage tube member 28 by engaging it. Simply by fitting the elastic clip 59 from above the engagement arm 54, the mechanical box 228 can be easily mounted inside the center of the drainage tube member 28.

In this state, the push button 45 is
When the push operation (see FIG. 2) is performed, the distal end of the inner wire 49 in the operation force transmitting member 51 is
8, the operating rod 230 is pushed up to open the plug 52, and the plug 52 is held in its open position by the position holding mechanism 248 provided inside the radio box 228. Next, when the push button 45 is pressed again, the stopper 52 is lowered together with the action rod 230 and is held at the closed position.

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

As shown in the figure, in the drain plug device 66, a drain tube member 28 similar to the pop-up drain plug device 20 is used as a drain tube member. As the fixing member, a fixing member 68 having no tubular branch portion 42 in the pop-up 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 denotes a fitting member having a cross shape as a whole, and four engaging arms 54 extend radially from the center. The form of each engagement arm 54 is the same as that shown in FIG.

The fitting member 70 has a downward fitting groove 61.
At the same time, it is fitted into the engaged arm 48 of the drainage tube member 28 from above and held.

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

As described above, according to this embodiment, the common drainage tube member 28 can cope with both the pop-up type drain plug device 20 and the rubber plug type drain plug device 66. As a result, these two types of drain cocks 2
At 0 and 66, the drainage pipe member as a component can be shared, the types of necessary components can be reduced, and the required cost can be reduced.

In this embodiment, when the drainage plug device is configured as a pop-up type drainage plug device 20, the mechanical box 228 engages the engaging arm 54 with the engaged arm 48 and serves as an elastic coupling means. The elastic clip 59 is attached to the drainage tube member 28 by the elastic force of the elastic box 59.
Can be lifted, so that the mechanical box 228 can be prevented from being damaged even if an upward thrusting force acts on the operation force transmitting member 51 when the bathtub is carried in or constructed.

In this embodiment, since it is not necessary to fix the mechanical box 228 to the drainage pipe member 28 with a screw member, the mounting operation of the mechanical box 228 can be easily performed.

Also, in this embodiment, 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 to the drainage tube member 28 can be appropriately and easily adjusted.

Further, in the case of the present embodiment, since the fitting groove 61 in the engaging arm 54 is formed as a downward groove, there is an advantage that inconvenience such as adhesion of water or scale to the inside of the groove does not occur. In addition, the engagement arm 54 has the advantage that the engaged arm 48 formed on the drainage tube member 28 can be concealed from above, and the appearance can be improved.

In addition, since there is no need to form a slit-like groove or the like in the engaged arm 48, the engaged arm 48
Can be made thick, and its strength can be made strong.

FIGS. 6 and 7 show another embodiment of the engaged arm, the corresponding engaging arm and the elastic coupling means. In the figure, a notch 76 is formed at the base end side of the vertical wall portion 56 of the engagement arm 74 formed integrally with the housing 50 of the mechanical box 228 so that the entire vertical wall portion 56 is an elastic portion. An engaging claw 78 protruding inward is formed integrally on the inner surface side of the vertical 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 formed with an engaged concave portion 82 near the lower end thereof. The dowel 78 is elastically engaged. Reference numeral 83 denotes a fitting member for constituting a rubber plug type drain plug device. Each engaging arm 74 is provided with a notch 76 and an engaging claw 78.

In the case of this embodiment, the elastic clip 59 as shown in FIG. 1 is not required when the mechanical box 228 is mounted on the drainage tube member 28, so that the number of parts can be further reduced, and The advantage that the mounting operation of the box 228 is further simplified is obtained.

FIG. 8 shows still another embodiment of the present invention. In this embodiment, the engaged arms 84 are provided on the inner peripheral surface of the drainage tube member 28 and at three places separated by 120 ° in the circumferential direction. And a bottom 86 is provided at each end of the engaged arms 84.
While forming the slit 88 with
8 are formed integrally on the outer peripheral surface of the housing 50, and the corresponding projection-shaped engagement arms 90 are fitted into the slits 88 from above, and the mechanical box 228 is drained. It is designed to be attached to the member 28.

In this case, the mechanical box 228 fitted in the drainage tube member 28 is
1 may be elastically coupled to the engaged arm 84 by an elastic clip as shown in FIG. Or you may make it elastically couple by another elastic coupling means.

In FIG. 8, reference numeral 92 designates a fitting member for forming a rubber plug type drain plug device.
Three engagement arms 93 extending radially at an angle of 0 °
have. Each engagement arm 93 has a mechanical box 2
A projection 94 having the same shape as the projection-shaped engagement arm 90 formed on the projection 28 is formed, and these projections 94 are fitted into the slits 88 of the drainage tube member 28.

That is, on the mechanical box 228 side, the entire engagement 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 engagement arm 93. Note that the base end of each engagement arm 93 has the same thickness as the engaged arm 84.

In the present embodiment, three engaged arms 84 and three engaging arms 90 and 93 are provided at 120 ° intervals, respectively, but four or more at 90 ° intervals as shown in FIG. It is of course possible to provide the same number.

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. It can be configured with various modifications.

[Brief description of the drawings]

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

FIG. 2 is an overall view of a bathtub provided with the drainage plug device of FIG.

FIG. 3 is a sectional view of the drainage plug device of FIG. 1;

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.

FIG. 5 is a sectional view of the drainage plug device of FIG.

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

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

FIG. 8 is a perspective view and a sectional plan view of main components of a pop-up type and a rubber plug type drainage plug device configured according to another embodiment of the present invention.

FIG. 9 is a view showing a form of a drainage tube 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 drainage plug device of FIG. 10 together with the configuration of an opening / closing device including a push button.

FIG. 12 is an explanatory view showing a position holding mechanism inside the radio box in FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bathtub 16 Bottom part 18 Drainage port 20 and 66 Drainage plug device 28 Drainage cylinder member 30 Male screw 32 Flange 34 Opening 36 Fixing member 46 Outer tube 48,80,84 Engaged arm 49 Inner wire 50 Housing 51 Operating force transmission member 52, 72 plug body 54, 74, 90, 93 engaging arm 56 vertical wall 58 upper wall 59 elastic clip 60 elastic arm 61 fitting groove 62 connecting part 64 elastic engaging claw 70, 92 fitting member 76 notch 78 Dowel 82 Engagement concave part 88 Slit 94 Projection 228 Mechanical box 230 Working rod

Claims (4)

(57) [Claims] (A) A cylindrical shape, an external thread is formed on an outer peripheral surface and an outward flange is formed on an upper end portion,
A drain cylinder member fitted into the opening of the bottom of the water tank such as a bathtub so that the flange is seated on the upper surface of the bottom; and (B) a lower part of the bottom of the water tank, which is screwed to an external thread of the drain cylinder member, and A fixing member for sandwiching and fixing the drainage tube member to the bottom of the water tank; (C) a plug closing an upper end opening of the drainage tube member; and (D) a lower half of the drainage tube member having an inner peripheral surface. A plurality of engaged arms protrudingly formed to extend from a predetermined plurality of positions in the circumferential direction toward the center and not to reach the center; and (E) (a) corresponding to the engaged arms The engaging arms are formed so as to extend radially from the central portion, and the engaging arms are configured to be engaged with the engaged arms in a fitting manner, and the whole is held inside the drainage tube member. (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,
An actuation rod for raising and lowering the plug between an open position raised from the upper end opening of the drainage cylinder and a closed position seated in the opening by its own vertical movement; The inner wire of a flexible operating force transmitting member made of a combination of an outer tube and an inner wire is penetrated into the housing at a position corresponding to the working rod, while the tip of the inner wire is provided inside the housing. A holding mechanism for alternately holding the working rod in the raised position or the lowered position for each one of the up-and-down movements, and furthermore, the engaging arm radiates from the outer peripheral surface of the housing at a position corresponding to the engaged arm. And (b) the operation box can be lifted up by the action of a large upward impact force and the operating force can be transmitted. One of elastic coupling means for elastically coupling the mechanical box to the engaged arm so that the mechanical box cannot be moved upward under an upward operating force normally applied through a member. A drain plug device for an aquarium such as a bathtub, characterized in that it includes: 2. The method according to claim 1, wherein the engaging arm comprises:
It has a pair of downward hanging walls and an upper wall connecting the upper ends of the hanging walls, and has a downward fitting groove between them, which is fitted to the engaged arm. Further, the elastic coupling means has a pair of elastic arms extending downward and a connecting portion for connecting upper ends of the elastic arms, and is elastically fitted to the engaging arm downward from above from above. A resilient clip having an engagement claw formed at a lower portion of the lower surface of the engaged arm so as to protrude inward from the pair of elastic arms and elastically engage with the lower surface of the engaged arm. A drain plug device for a water tub such as a bath tub. 3. The vertical 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 vertical wall portions so that the vertical wall portions are elastic portions.
An engaging claw that projects inward and engages with the lower surface of the engaged arm is formed integrally with a portion of the vertical wall below the lower surface of the engaged arm. Drain tap device for water tank such as bathtub. 4. The device according to claim 1, wherein a longitudinal slit is formed at a tip end of the engaged arm that protrudes toward the center, and a projection that fits into the slit is formed at the engaging arm. A drain plug device for a water tub such as a bath tub.