JPH0589569U - Water tank drain plug structure - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To prevent the drainage tap from opening even if it is covered with a lid, etc. without impairing the usability of the operation buttons for opening and closing the drainage tap of a bathtub or the like. [Structure] A drain plug structure in which a drain member 2 is opened and closed by a chain member that interlocks with a stroke operation of a push-button type operation button 8, and a pressing surface of the operation button is projected from an outer wall of a water tank or a mounting seat in the operation direction. Reciprocating operation is possible,
Between the operation button and the drain plug, a non-connecting part that discontinues the transmission of the pressing force by this operating button is provided, and the distance in the stroke direction between the members of this non-connecting part is more Enlarge. Even if the operation button is covered with, for example, the lid of the bathtub, the movement amount of the operation button does not interlock the members of the non-connecting portion, and the drain plug can be kept closed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a remote-operated drain plug provided at the bottom of a bathtub, and more particularly to a drain plug structure of a type in which a push-button type operation button is provided slightly protruding from the rim surface of the bathtub.

[0002]

[Prior Art]

 It is known that a drain plug provided at the bottom of a bathtub is one that is opened by connecting it to a ball chain and pulling it up. In recent years, instead of this, a mechanism that incorporates a drain tap operation mechanism outside the bathtub and that is remotely controlled by a push button or a rotatable handle provided on the rim surface of the bathtub has been widely used.

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

[0004]

[Problems to be solved by the device]

 When the operation part is a push button type and is installed on the rim surface, the upper surface of the operation button faces upwards 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 may slip and cover the operation button, or the user may slip his or her hand while taking a bath.

When the lid or the hand of the person is put on the operation button in this way, the drain plug that is closed is opened due to the action force that pushes it down, or conversely, the drain plug that is open is closed. It will be lost.

In order to prevent such a malfunction of the push button type operation button, the upper end of the operation button is always included in the sleeve-shaped guide as described in Japanese Utility Model Laid-Open No. 2-109872. It is possible to do so. In this way, if the operation button is always stored in the guide, even if the cover is covered, the guide only receives it, and the operation button is not pushed down.

However, if the operation button is always sunk into the guide, it is necessary to look into the upper surface of the guide to check at which setting position the operation button is located. For this reason, it is troublesome to check whether the drain tap is open or closed, and water may be supplied when the drain tap is open.

[0008] The problem to be solved in the present invention is to prevent the drain plug from opening even if the lid is covered without impairing the usability of the operation button.

[0009]

[Means for Solving the Problems]

 The present invention is a drain plug structure including a push-button type operation button incorporated into the outer wall of a water tank, and a chain member that opens and closes the drain plug at the bottom of the water tank in conjunction with the stroke operation of the operation button. The pressing surface of the operation button is projected from the outer wall or the mounting seat of the water tank and is incorporated in the operation unit so that it can reciprocate in the operation direction, and the transmission of the pressing force by the operation button between the operation button and the drain plug. A discontinuous non-connecting portion is provided, and a distance in the stroke direction between members of the non-connecting portion is made larger than a protruding length of the operation button.

[0010]

[Action]

 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 non-connecting part between the operation button and the drain plug that discontinues the transmission of the rolling force, unless the stroke of the operation button is larger than the distance between the members of this discontinuing part, the end Side drain plug does not move. Therefore, if the length of the operation button of the operation part protruding from the outer wall of the aquarium or the mounting seat is reduced with respect to the distance between the members of the non-connecting portion, the operation button is pushed by covering the aquarium lid or the like. However, the stroke at this time remains discontinuous between the members of the non-connecting portion. Therefore, even if the cover is covered or accidentally touched by the hand, the drain plug will be kept closed, and for example, boiling water when boiling water in the bathtub will be prevented and water will be wasted. Disappear.

[0011]

【Example】

 FIG. 1 is a vertical cross-sectional view showing a main part of a drainage tap of the present invention. In this embodiment, an operation structure of a drainage tap of a bathtub will be described.

In the figure, an operating portion 3 for opening and closing the drain plug 2 arranged at the bottom of the bath 1 is incorporated in a posture facing upward from the rim 1 a at the upper end of the bath 1. Between the operation part 3 and the drain plug 2, a guide tube 4 is provided along the outer wall on the side surface of the bathtub 1, and a connector tube 5 connected to the lower end of the guide tube 4 and provided along the bottom surface of the bathtub 1. And are piped. A drain pipe 5a is connected to the end of the connector tube 5 coaxially with the drain plug 2, and the drain plug 2 is assembled at the upper end of the drain pipe 5a and a drain pipe (not shown) is attached at the lower end. Connected and collect the drainage from the bathtub 1.

Further, a total of five link rods 6 connected to the operation portion 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 utilizing a pin for connecting each of them. The roller 6a rolls with a posture of hitting the inner wall of the guide tube 4, and smoothes the operation when the link rod 6 moves up and down by the operation unit 3.

FIG. 2 is a vertical cross-sectional view of the 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 cylinder 5a is incorporated in the bottom surface of the bathtub 1 and a plug 2b can be raised and lowered with respect to the drain fitting 2a. The plug body 2b is provided with a packing 2c, and a fitting 2d is protruded downward and a guide vane 2e having a cross-shaped cross section is connected to the periphery thereof. The fitting 2d has a hollow cylindrical shape, and a spline 2f is formed on the inner periphery of the lower end of the fitting 2d, and connecting rods 2g that engage with the spline 2f are incorporated so as to be movable in the axial direction. 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 final link of the lever link mechanism 7 in the connector tube 5 is connected to the mover 2 g 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 fulcrum link 7b having a bowed shape and seated on the inner wall of the connector tube 5. And two connector links 7c and 7d. The final stage connector link 7d is connected to the connecting rod 2g by the screw 7e, and the connecting rod 2g can be moved up and down by the combined movement of the two connector links 7c and 7d from the fulcrum link 7b.

FIG. 3 is a vertical sectional view of the operation portion 3 when the drain plug 2 is closed.

The operation unit 3 is provided with a thrust lock mechanism, which is employed in, for example, a ballpoint pen, inside a sleeve 3a which is fixed by penetrating the rim 1a of the bathtub 1. This thrust lock mechanism has the function of setting a member from the non-operating position to the operating position by pressing the button once to lock it, and then pressing the button again to return the operating position to the non-operating position.

In FIG. 3, a spindle guide 3b is provided inside the sleeve 3a for movably supporting the spindle 3c connected to the thrust lock mechanism and the link rod 6 coaxially. The spindle 3c is urged upward by the coil spring 3d, and when there is no downward pressure, the link rod 6 in the guide tube 4 is held in the pulled-up position.

A hollow cylindrical operation button 8 having an open lower end is vertically movably incorporated in the upper end of the sleeve 3a. That is, in this embodiment, the sleeve 3a provided by penetrating the rim 1a of the bathtub 1 is arranged as a mounting seat for movably holding the operation button 8 in its operation direction.

As shown in FIG. 4, the operation buttons 8 are provided with two slits 8a on the outer peripheral surface at point-symmetrical positions with respect to the center, and the slits 8a are provided with stoppers 3e provided on the inner periphery of the sleeve 3a. The engagement prevents the sleeve 3a from coming off.

A thrust lock mechanism provided between the operation button 8 and the spindle 3c is a bushing 9 fixed in the spindle guide 3b, and is inserted into the bushing 9 so as to be coaxially movable. It comprises a reduction rod 10 whose upper end abuts against the lower surface of the operation button 8 and a rotor 11 which is connected to the lower end of the reduction rod 10 and whose lower surface abuts against the upper end of the spindle 3c.

Returning to FIG. 1, at the lowest end of the link rod 6 accommodated in the guide tube 4 and into the connector tube 5, a weight having a posture facing the lower driven link 7a is provided. 6e is provided. When the drain plug 2 is closed, the link rod 6 and the lever link mechanism 7 are provided so that a gap having a dimension B in the height direction is formed between the weight 6e and the upper end of the driven link 7a. Incorporate each.

On the other hand, in the operation unit 3, the upper end surface of the operation button 8 when the drain plug 2 is closed is assembled so as to project slightly above the sleeve 3a. The protruding length of the operation button 8 is set to A as shown in FIGS.

Here, with respect to the protruding length A of the operation button 8, there is a relationship of A <B between 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 3c descends and stops at the position locked by the thrust lock mechanism. As the spindle 3c descends, the link rods 6 connected to it are also pushed down, and the rollers 6a provided at these joints slide on the inner circumference of the guide tube 4 and roll.

As the link rod 6 descends, the weight 6e at the lower end of the link rod 6 falls into the connector tube 5, thereby pushing down the driven link 7a of the lever link mechanism 7. Therefore, the fulcrum link 7b and the two connector links 7c and 7d push up the plug body 2b of the drainage plug 2 to open the drainage plug 2 as shown in FIG.

When the pushed down operation handle 8 is pushed again, the spindle 3c rises and the link rod 6 and the weight 6e at the lower end thereof are also pulled up, as described in FIG. As a result, there is no constraint on the driven link 7a, and the drain plug 2 is lowered by the weight of the plug 2b to close the flow path.

Here, even if the lid is put on the operation button 8 and pushed, the length A at which the operation button 8 projects from the sleeve 3a is a gap 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 the operation button 8 downward is hooked on the sleeve 3a, the maximum length of the operation button 8 that moves downward is equal to the protruding length A 1 from the sleeve 3a. Therefore, 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 to the lever link mechanism 7 is maintained in a closed state without opening.

As described above, even if the operation button 8 of the operation unit 3 is covered with the lid, the drain plug 2 is prevented from being opened, and even if the operation button 8 is accidentally pressed by the palm during bathing, the drainage water is drained. Stopper 2 never opens. Therefore, for example, when the lid is closed and boiling water is boiled, the water will not be drained without checking the condition of the drainage plug 2, and it is also useful for prevention of empty heating.

Further, since the operation button 8 is arranged so that the upper end thereof protrudes, from a design point of view, the state of the operation button 8 can be determined at a glance, and the usability is further improved. ..

FIG. 5 is a vertical cross-sectional view of the operation unit 3 showing another embodiment.

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

In the figure, the sleeve 3a, the spindle guide 3b, the spindle 3c, the coil spring 3d and the stopper 3e are exactly the same as those shown in FIG. 3, and the wire 12 is connected to the lower end of the spindle 3c. Has been done. Further, the pressing rod 10, which is one member of the thrust mechanism, has its axial length shortened, and its upper end is separated from the lower surface of the operation button 8 when the drain plug 2 is closed. When the gap size between the upper end of the reduction rod 10 and the lower surface of the operation button 8 is C, the operation button 8 and the protrusion length A from the sleeve 3a have a relationship of A <C. To assemble.

Further, a flange 3f is provided on 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 biases the operation button 8 upward, and when the drain plug 2 is closed, holds the coil spring 13 at a position protruding by the dimension A from the sleeve 3a as described above.

Here, since there is a gap between the lower surface of the operation button 8 and the pressing rod 10 of the thrust lock mechanism that is connected to the wire 12, unless the operation button 8 is pushed with a stroke exceeding this gap, The wire 12 is not driven. Even if the operation button 8 is covered with the lid, it is hooked on the upper end of the sleeve 3a, so that the stroke of the operation button 8 is only the maximum protrusion dimension A. Therefore, the lower surface of the operation button 8 does not push the reduction rod 10, and the drain plug 2 is maintained in the closed state.

As described above, even if the chain member is the wire 12, even if the operation button 8 is accidentally pressed and the lid is covered, the drain plug 2 does not open unnecessarily, and the water is not heated. Is prevented.

Although the operation button 8 uses the sleeve 3a as its mounting seat, the operation button 8 may be incorporated so as to directly penetrate the rim 1a of the bathtub 1 in this case. In this case, the operation button 8 from the rim 1a is inserted. The protrusion length of the above may be made larger than the distance between the members in the non-connecting portion of the chain member. Further, although the drain plug of the bathtub has been described in the embodiment, it is needless to say that the operation structure of the present invention can be applied to various water tanks such as a washbasin.

[0038]

[Effect of the device]

 In 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 plug can be kept closed even if the lid is covered. For this reason, water does not leak after being supplied with water, so that it is possible to prevent the water from being boiled and the stored water is not drained wastefully. Also, since the operation buttons can be installed in a posture protruding from the outer wall of the tank, the operation button is not limited to a design in which the upper surface of the operation button is dropped into a seat, for example, and the operation button can be designed according to the outer diameter of the tank and the application. Design becomes possible.

[Brief description of drawings]

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

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

FIG. 3 is a detailed vertical cross-sectional view of the operation portion when a drain plug is closed.

FIG. 4 is a schematic exploded perspective view of a main part showing a structure of incorporating an operation handle of an operation part into a sleeve.

FIG. 5 is a vertical cross-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 plug 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 Reduction rod 11 Rotor 12 Wire 13 Coil spring

Claims (1)

[Scope of utility model registration request] 1. A drain plug structure comprising a push-button type operation button incorporated in an outer wall of a water tank, and a chain member which opens and closes a drain plug at the bottom of the water tank in association with a stroke operation of the operation button, The pressing surface of the operation button is protruded from the outer wall or the mounting seat of the water tank and is incorporated in the operation unit so as to be capable of reciprocating in the operation direction. A water tank drain plug structure, wherein a continuous non-connecting portion is provided, and a distance in a stroke direction between members of the non-connecting portion is larger than a protruding length of the operation button.