JP2560773Y2 - Drain plug structure for aquarium - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a remotely operated drain cock provided at the bottom of a bathtub, and more particularly to a drain cock structure of a type in which a push button type operation button is provided so as to slightly protrude from a rim surface of the bathtub. .

[0002]

2. Description of the Related Art A drain plug provided at the bottom of a bathtub is known as the simplest one which is connected to a chain of balls and opened by opening the plug. Instead of this, recently, an operation mechanism of a drainage plug incorporated in the outside of a bathtub and remotely operated by a push button or a rotary handle provided on a rim surface of the bathtub has been widely used.

In such a remote-operated drain plug, a mechanism is generally adopted in which, for example, a plurality of link rods are arranged and connected between the operating part and the drain plug, or a wire is connected by wiring. As described above, a push button or a rotary handle is used as the operation unit. In the case of the push button type, it is usually provided on the rim surface at the upper end of the bathtub.

[0004]

When the operation part is a push button type and is incorporated into the rim surface, the upper surface of the operation button is in a posture facing upward like the rim surface. For this reason, if the upper surface of the operation button protrudes above the rim surface, the lid of the bathtub is displaced and covers the operation button, or the user often slips and touches during bathing.

[0005] When the lid or a person's hand is put on the operation button in this manner, the drain plug that is closed is opened by the action of pushing downward, or the drain plug that is open is closed. You will be rolling.

In order to prevent such a malfunction of the push button type operation button, for example, as described in Japanese Utility Model Laid-Open No. 2-109872, the upper end of the operation button is always included in the sleeve-shaped guide. It can be considered.
As described above, if the operation button is always stored in the guide, even if the cover is covered, the guide only receives the operation button, and the operation button is not pushed down.

[0007] However, if the operation button always falls into the guide, it is necessary to look into the upper surface of the guide to check in which position the operation button is located.
For this reason, it is troublesome to check whether the drain plug is open or closed, and water is supplied when the drain plug is open.

The problem to be solved in the present invention is to prevent the drain plug from opening even if the cover is covered without impairing the usability of the operation button.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a push button type operation button incorporated into an outer wall of a water tank, and a chain member for opening and closing a drain plug at the bottom of the water tank in conjunction with a stroke operation of the operation button. A drainage plug structure, wherein a pressing surface of the operation button protrudes from an outer wall or a mounting seat of the water tank and is incorporated in an operation portion so as to be reciprocally movable in an operation direction, and the operation is performed between the operation button and the drainage plug. A non-connecting portion for discontinuous transmission of the rolling force by the button is provided, and a distance in a stroke direction between the members of the non-connecting portion is made larger than a protruding length of the operation button.

[0010]

When the push button type operation button is pressed, the chain member moves in the stroke direction of the operation button, and the drain plug located at the end of the chain member is lifted and opened. Since there is a discontinuous portion between the operation button and the drain plug that makes the transmission of the rolling force discontinuous, unless the stroke of the operation button is longer than the distance between the members of the discontinuous portion, the end side Drain cock does not move. For this reason, if the length of the operation button of the operation unit protruding from the outer wall or the mounting seat of the water tank is reduced with respect to the distance between the members of the non-joined portion, the operation button is pushed by covering the water tank lid or the like. However, the stroke at this time remains discontinuous between the members of the non-connected portion. Therefore, even if the lid is covered or touched by hand, the drain cock is kept closed, and for example, it is possible to prevent water from being wasted when boiling hot water in a bathtub or the like, and waste water. Disappears.

[0011]

FIG. 1 is a longitudinal sectional view showing a main part of a drain plug according to the present invention. In this embodiment, an operation structure of a drain plug of a bathtub will be described.

In FIG. 1, an operation unit 3 for opening and closing a drain plug 2 disposed at the bottom of a bathtub 1 is installed in a posture facing upward from a rim 1a at an upper end of the bathtub 1. A guide tube 4 laid along the outer wall on the side surface of the bathtub 1 is provided between the operation unit 3 and the drain plug 2.
And a connector tube 5 connected to the lower end of the bathtub 1 and provided along the bottom surface of the bathtub 1. A drain pipe 5a is connected to the pipe end of the connector tube 5 coaxially with the drain plug 2, and the drain plug 2 is installed at the upper end of the drain pipe 5a and a drain pipe (not shown) is connected to the lower end. To collect wastewater from bathtub 1.

Further, a total of five link rods 6 connected to the operation unit 3 are arranged inside the guide tube 4, and a lever link mechanism 7 is housed inside the connector tube 5. A roller 6a is rotatably attached to the joint of the link rod 6 by using a pin for connecting each of them. The roller 6 a rolls with a posture in which it abuts against the inner wall of the guide tube 4, and is operated by the operation unit 3.
Facilitates the movement of the ascending and descending.

FIG. 2 is a longitudinal sectional view of a main part when the drain plug 2 is opened.

The drain plug 2 has a structure in which a drain fitting 2a integrated with a drain tube 5a is incorporated in the bottom surface of the bathtub 1, and a plug 2b can be moved up and down with respect to the drain fitting 2a. The plug 2b is provided with a packing 2c, and a fitting 2d is protruded downward, and a guide blade 2e having a cross-shaped cross section is connected therearound. The mounting bracket 2d has a hollow cylindrical shape, and has a spline 2f formed on the inner periphery of the lower end thereof, and a connecting rod 2g that engages with the spline 2f.
Are mounted so as to be axially movable with respect to each other. Then, a coil spring 2h is incorporated between the connecting rod 2g and the plug 2b to urge the plug 2b and the connecting rod 2g away from each other.

The last link of the lever link mechanism 7 in the connector tube 5 is connected to the moving element 2g of the drain plug 2. As shown in FIG. 1, the lever link mechanism 7 includes a driven link 7a in which one end faces the lower end of the guide tube 4, and a connector tube 5 having a bowed shape.
And a fulcrum link 7b and two connector links 7c and 7d which are seated on the inner wall of the connector. The connector link 7d at the last stage is connected to the connecting rod 2g by a screw 7e, and the two connector links 7 from the fulcrum link 7b.
By the combined movement of c and 7d, the connecting rod 2g can be moved up and down.

FIG. 3 is a longitudinal sectional view of the operation unit 3 when the drain cock 2 is closed.

The operating section 3 has a thrust lock mechanism employed in, for example, a ballpoint pen inside a sleeve 3a fixed through the rim 1a of the bathtub 1. The thrust lock mechanism has a function of setting and locking the member from the non-operation position to the operation position by pressing the button once, and then returning from the operation position to the non-operation position again by pressing the button again.

In FIG. 3, inside the sleeve 3a,
A spindle guide 3b is provided to support the spindle 3c connected to the thrust lock mechanism and the link rod 6 coaxially and movably. The spindle 3c is urged upward by a coil spring 3d, and restrains the link rod 6 in the guide tube 4 at a raised position when there is no pressure from above.

At the upper end of the sleeve 3a, a hollow cylindrical operation button 8 having an open lower end is incorporated so as to be vertically movable. That is, in this embodiment, the sleeve 3a provided through the rim 1a of the bathtub 1 is arranged as a mounting seat for holding the operation button 8 movably in the operation direction.

As shown in FIG. 4, two operation buttons 8 are provided on the outer peripheral surface at points symmetrical with respect to the center of the slit 8a, and a stopper 3e provided on the inner periphery of the sleeve 3a is engaged with the slit 8a. This prevents the sleeve 3a from coming off.

The thrust lock mechanism provided between the operation button 8 and the spindle 3c is a spindle guide 3
b, a bushing 9 fixed in the bushing 9, a coaxially movable bushing 9 which is inserted into the bushing 9 and whose upper end abuts against the lower surface of the operation button 8, and which is connected to the lower end of the lowering rod 10. The lower surface is spindle 3c
Is constituted by the rotor 11 abutting on the upper end of the rotor.

Returning to FIG. 1, the lowermost portion of the link rod 6 housed in the guide tube 4 and falling into the connector tube 5 is provided with a weight that is positioned facing the lower driven link 7a. 6e is provided. And drain plug 2
Is closed, the link rod 6 and the lever link mechanism 7 are incorporated so that a gap having a height B is formed between the weight 6e and the upper end of the driven link 7a.

On the other hand, the operation section 3 is assembled such that the upper end surface of the operation button 8 when the drain plug 2 is closed protrudes slightly above the sleeve 3a. The projection length of the operation button 8 is set to A as shown in FIGS.

Here, the relationship A <B is established between the protrusion length A of the operation button 8 and the dimension B of the gap between the weight 6e and the driven link 7a. When the operation button 8 of the operation unit 3 is pressed, the spindle 3
c descends and stops at a position locked by the thrust lock mechanism. As the spindle 3c descends, the link rods 6 connected thereto are also pushed downward, and the rollers 6a provided at these joints slide on the inner circumference of the guide tube 4 and roll.

When the link rod 6 is lowered, the weight 6e at its lower end falls into the connector tube 5, thereby pushing down the driven link 7a of the leverage link mechanism 7 downward. Therefore, the plug 2b of the drain plug 2 is pushed up by the fulcrum link 7b and the two connector links 7c and 7d, and the drain plug 2 is opened as shown in FIG.

When the depressed operating handle 8 is pressed again, the spindle 3c is raised and the link rod 6 and the weight 6e at the lower end thereof are raised as described with reference to FIG. Thereby, the constraint on the driven link 7a is removed, and the drain plug 2 descends by its own weight of the plug 2b to close the flow passage.

Here, even if the lid is put on the operation button 8 and pressed, the length A of the operation button 8 protruding from the sleeve 3a is the gap size between the weight 6e and the driven link 7a. Since it is smaller than B, the weight 6e does not reach the driven link 7a. That is, since the lid that pushes down the operation button 8 is hooked on the sleeve 3a, the maximum length that the operation button 8 moves down is the sleeve 3a.
Is equal to the protruding length A. For this reason, even if the link rod 6 descends by the stroke length A, the weight 6e at the lower end does not push the upper end surface of the driven link 7a. Therefore, the lever link mechanism 7 does not operate, and the drain plug 2 connected thereto is maintained in a closed state without opening.

As described above, even if the operation button 8 of the operation section 3 is covered with the lid, the drain plug 2 is prevented from opening, and even if the operation button 8 is pressed by mistake with the palm during bathing, the drainage is drained. The stopper 2 does not open. Therefore, for example, when the hot water is boiled by closing the lid, the water is not drained without checking the condition of the drain plug 2, and it is also useful for preventing the empty heating.

Further, since the operation buttons 8 are arranged so that their upper ends protrude, the design of the operation buttons 8 can be determined at a glance from the viewpoint of design, and the usability is further improved.

FIG. 5 is a longitudinal sectional view of the operation unit 3 showing another embodiment.

In this example, a wire is used as a chain member for opening and closing the drain plug 2 instead of the link rod 6 and the lever link mechanism 7 described above.

In the figure, the members of a sleeve 3a, a spindle guide 3b, a spindle 3c, a coil spring 3d and a stopper 3e are exactly the same as those shown in FIG. 3, and a wire 12 is connected to the lower end of the spindle 3c. ing. The axial length of the pressing rod 10, which is one member of the thrust lock mechanism, is shortened. When the drain plug 2 is closed, its upper end is separated from the lower surface of the operation button 8. The upper end of the pressure rod 10 and the operation button 8
When the clearance between the lower surface of the control button 8 and the operation button 8 is
Is between the protruding length A from the sleeve 3a and A <
Assemble to have C relationship.

Further, a flange 3f is provided at the upper end of the spindle guide 3b fixed to the sleeve 3a, and a coil spring 13 is incorporated between the flange 3f and the lower surface of the operation button 8. The coil spring 13 urges the operation button 8 upward, and when the drain plug 2 is closed, holds the drain button 2 at a position protruding from the sleeve 3a by the dimension A as described above.

Here, the lower surface of the operation button 8 and the wire 12
Since there is a gap between the pressing rod 10 of the thrust lock mechanism and the wire 12, the wire 12 is not driven unless the operation button 8 is pressed with a stroke exceeding this gap. Then, even if the operation button 8 is covered with a lid, the operation button 8 is hung on the upper end of the sleeve 3a. Therefore, the lower surface of the operation button 8 does not reach the position where the pressing rod 10 is pushed, and the drain plug 2 is maintained in a closed state.

As described above, even if the chain member is the wire 12, even if the operation button 8 is accidentally pressed or the cover is covered, the drain plug 2 is not opened unnecessarily, and the emptying and the like are not opened. Prevention is achieved.

The operation button 8 uses the sleeve 3a as a mounting seat, but instead of this, the rim 1a of the bathtub 1 is used instead.
In this case, the protrusion length of the operation button 8 from the rim 1a may be larger than the distance between the members of the non-joined portion of the chain member. Further, although the drain plug of the bathtub has been described in the embodiment, it is a matter of course that the operation structure of the present invention can be applied to various water tanks such as a wash basin.

[0038]

According to the present invention, even if the operation button of the operation unit is arranged so as to protrude from the outer wall of the tank, the drain cock can be kept closed even if the lid is covered. For this reason, there is no possibility that water leaks after water is supplied, and it is possible to prevent empty burning and that the accumulated water is not wastefully drained. In addition, since the operation buttons can be incorporated in a position protruding from the outer wall of the tank, the design of the operation buttons according to the outer diameter of the tank and the application is not limited to, for example, a design in which the upper surface of the operation buttons is dropped into a seat. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing an example in which a drain plug of the present invention is applied to a bathtub.

FIG. 2 is a longitudinal sectional view of a main part showing a state in which a drain plug is opened.

FIG. 3 is a detail of an operation unit, and is a longitudinal sectional view of a main part when a drain cock is closed.

FIG. 4 is a schematic exploded perspective view of a main part showing a structure in which an operation handle of the operation unit is incorporated into a sleeve.

FIG. 5 is a longitudinal sectional view showing a main part of an operation unit when a wire is used as a chain member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Drain tap 3 Operation part 3a Sleeve (mounting seat) 4 Guide tube 5 Connector tube 6 Link rod 7 Lever link mechanism 8 Operation button 9 Bushing 10 Push-down rod 11 Rotor 12 Wire 13 Coil spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A drain plug structure comprising: a push button type operation button incorporated into an outer wall of a water tank; and a chain member that opens and closes a drain plug at a bottom of the water tank in conjunction with a stroke operation of the operation button. The pressing surface of the operation button protrudes from the outer wall or the mounting seat of the water tank and is incorporated in the operation unit so as to be able to reciprocate in the operation direction, and the transmission of the rolling force by the operation button from the operation button to the drain plug is not performed. A drain plug structure for an aquarium, wherein a non-connecting portion that is continuous is provided, and a distance in a stroke direction between members of the non-connecting portion is longer than a protruding length of the operation button.