JP2015151756A - Drain plug with operation unit observable from outside - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug having an operation unit that allows the plug conditions to be observed easily from outside.SOLUTION: A drain plug has an operation unit installed at the top end of a sheath tube for visually observing the conditions of the drain plug. The operation unit has: a main body of which the whole or a part of the lateral faces is formed of a clear or translucent material; a first spindle housed in the main body and has an operation handle installed at the top end; and a second spindle housed in the main body, has a female screw that engages with a male screw installed on the outer surface of the first spindle, and is linked with a piston through an intermediate shaft. The second spindle moves up and down without rotating along with the first spindle. When the handle is rotated, the second spindle moves up and down and the conditions of the drain plug may be known by observing the top end of the second spindle through the main body.

Description

  The present invention relates to a drain plug provided with an operation unit that can visually check whether it is in a water supply state or a drainage state from the outside.

  In cold districts, in order to prevent water pipes from freezing, a water tap is generally installed in the ground below the freezing depth. Then, by operating the drain plug, the water supply state is shifted to the drain state to discharge the water in the pipe so that the water in the water pipe is not frozen.

  Various types of such water drain plugs have been developed and are commercially available, but are generally configured to operate the water drain plug by turning a handle provided at the top.

  However, in such a handle operation type water drain plug, the handle itself moves up and down in accordance with the operation (in the water supply state, as shown in FIG. As shown in FIG. 6 (b), the handle is in a lowered state), but in order to determine the state of the drain plug (whether it is a water supply state or a drainage state), it can be regarded as an actual operation. In addition, since it is difficult to visually determine the state of the water drain plug, there is a problem that handling is troublesome.

  The present invention has been developed in view of such a situation, and an object of the present invention is to provide a water drain provided with an operation unit that can easily visually check the state of the water drain from the outside.

  The drain plug according to claim 1 of the present application is provided at the upper end of the outer tube and includes an operation unit for visually observing the state of the drain plug, and the operation unit is made of a transparent or translucent material and is at least one of the whole or the side surface. A main body formed with a portion, a first spindle at least partially housed in the main body and having an operation handle attached to the upper end, and a female screw housed in the main body and meshing with a male screw on the outer surface of the first spindle. A second spindle provided on the inner surface and connected to the piston via an intermediate shaft, and the second spindle is configured to move up and down without rotating when the first spindle rotates, When the handle is turned to the water supply state or the drainage state, the second spindle moves up and down, and the upper end of the second spindle is visually observed through the main body so as to grasp the state of the drain plug. And it is characterized in Rukoto.

  The water drain plug according to claim 2 of the present application is the water drain plug according to claim 1, wherein the configuration of the second spindle that moves up and down without rotating together with the rotation of the first spindle is the inner surface of the main body and the outer surface of the second spindle. It is characterized in that a chamfered portion for preventing co-rotation is provided, or that the inner surface of the main body and the outer surface of the second spindle are formed in an n-gon shape (n ≧ 3).

  The water drain plug according to claim 3 of the present application is the water drain plug according to claim 1 or 2, wherein a reference line for judging the state of the water drain plug is provided on the side surface of the main body, or the entire second spindle or The upper end portion is colored.

  According to the drain plug of the present invention, by visually observing the upper end of the second spindle through the transparent or translucent main body, it can be easily determined whether the drain plug is in a water supply state or a drainage state. Moreover, since the operation part of the water draining plug of the present invention has a simple structure, it can be provided at a low cost, has few failures, and is easy to maintain.

It is sectional drawing which showed the whole water tap according to preferable embodiment of this invention in a water supply state. It is an expanded sectional view of the part 2 of FIG. It is sectional drawing which showed the whole drain plug which concerns on preferable embodiment of this invention in the drained state. It is an expanded sectional view of the part 4 of FIG. FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 2, showing a specific example of a configuration in which the second spindle is moved up and down without rotating when the first spindle rotates. It is the figure which showed the top part of the conventional handle operation type water drain plug, Comprising: Fig.6 (a) shows a water supply state and FIG.6 (b) shows the water drained state.

  Next, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing the entirety of a water supply faucet equipped with an operation unit according to the present invention, and FIG. 3 is a cross-sectional view showing the entire water faucet equipped with an operation unit according to the present invention. is there. A water draining plug according to a preferred embodiment of the present invention generally indicated by reference numeral 10 in FIGS. 1 and 3 includes a lower body 12 and an outer tube 14 screwed to the upper end of the lower body 12. . In FIG. 1 and FIG. 3, the lower main body 12 is formed of two parts, that is, an upper half part 12a and a lower half part 12b.

  A piston 16 is accommodated in the lower body 12. The piston 16 extends in the length direction, and is provided with a vertical hole 16a opened at the lower end of the piston 16, and a lateral hole 16b provided at an upper portion of the piston 16 and extending laterally so as to communicate with the vertical hole 16a. have. The piston 16 is formed with a reduced diameter portion 16c having a diameter smaller than that of the other portion 16d at a substantially central portion thereof, above and below the reduced diameter portion 16c of the piston 16 and above the lateral hole 16b. In addition, packings 16e are respectively attached to the lower portions. A water supply port 18 is provided above the lower body 12.

  On one side of the lower body 12, a water pipe connection portion 20 for connecting to a water pipe (not shown) is provided, and between the water pipe connection portion 20 and the lower body 12, a water pipe is provided. A valve chamber 22 is provided so as to communicate with the pipe connecting portion 20 and the lower main body 12. A water stop valve 24 is disposed in the valve chamber 22, and the tip end portion 24 a of the water stop valve 24 moves along the guide portion 26, so that the water stop valve 24 is substantially horizontal. It is designed to move in the direction.

  On the other side of the lower body 12, a drain valve 28 is attached for discharging water in the lower body 12 when draining water and preventing sewage from the outside from flowing into the lower body 12. ing. The drain valve 28 includes a drain valve ball receiver 28 a and a drain valve ball receiver mounting portion 28 b formed integrally with the lower body 12. The drain valve ball receiver 28a has a horizontal hole 28a1 penetrating in the transverse direction, and extends upward in the vertical direction so as to communicate with the horizontal hole 28a1, and opens at the upper end of the drain valve pole receiver 28a. A vertical hole 28a2 for seating is formed. The drain valve ball receiver mounting portion 28b has a female screw formed on the inner surface, and when the drain valve ball receiver 28a is screwed, the lateral hole 28a1 and the lower body 12 communicate with each other. And a communication hole 28b2 and an external hole 28b3 opened to the outside of the drain valve 28.

  The structure itself of the lower main body 12, the water pipe connection part 22, the water stop valve 24, and the drain valve 28 of the water drain plug 10 described above is a known one.

  The drain plug 10 of the present invention is disposed at the upper end of the outer tube 14 and includes an operation unit 30 for visually observing the state of the drain plug 10 (that is, whether the water supply state or the drainage state).

  The operation unit 30 has a cylindrical shape with a closed upper end, and has a main body 32 that is formed of a transparent or translucent material and at least part of the entire surface or side surfaces. The main body 32 is joined to the upper end of the outer tube 14 via a union main body 34a and a union nut 34b. As a material for forming the main body 32, an arbitrary material such as a known resin material (for example, polyethylene or polypropylene) may be used.

  The operating unit 30 is also housed in a main body 32 at least partially, with a first spindle 36 having an operating handle 38 attached to the upper end, and in the main body 34 as best shown in FIGS. And a second spindle 40 provided with an internal thread 40a that meshes with an external thread 36a on the outer surface of the first spindle 36.

  The second spindle 40 is configured to move up and down without rotating when the first spindle 36 rotates. In such a configuration, for example, chamfer portions 32a and 40a for preventing co-rotation are provided on the inner surface of the main body 32 and the outer surface of the second spindle 40 (see FIG. 5A), or the inner surface of the main body 32 and the second spindle. The outer surface of 40 is formed into an n-gon (n ≧ 3) (see FIG. 5B). The second spindle 40 is connected to a middle shaft 44 having a lower end coupled to the upper end of the piston 16 via a middle shaft suspension 42. Thereby, by rotating the handle 38, the first spindle 36 can be rotated, and the second spindle 40 can be moved up and down to move the piston 16 in the lower body 12 up and down.

  The operation of the water drain plug 10 configured as described above will be described. When water is to be supplied, the handle 38 is turned in one direction. Then, the first spindle 36 integrated with the handle 38 also rotates in the same direction, and the second spindle 40 engaged with the external thread 36a on the outer surface of the first spindle 36 is raised. As a result, the piston 16 rises via the intermediate shaft suspension 42 and the intermediate shaft 44, and the distal end portion 24a of the water stop valve 24 resists water pressure by the large diameter portion 16d provided at the distal end of the piston 16. Since the water pipe is pushed toward the left (to the left in FIG. 1), the water pipe and the water supply port 18 are communicated to supply water. Such a water supply state can be easily grasped by visually observing that the upper end of the second spindle 40 is rising through the main body 32 of the operation unit 30.

  On the other hand, when trying to drain water, the handle 38 is turned in the opposite direction. Then, the first spindle 36 integrated with the handle 38 also rotates in the same direction, and the second spindle 40 meshing with the external thread 36a on the outer surface of the first spindle 36 is lowered. As a result, the piston 16 descends via the intermediate shaft suspension 42 and the intermediate shaft 44, and the water stop valve 24 is pressed toward the center of the lower main body 12 (rightward in FIG. 3) by the water pressure. 12, the water flow is shut off because of the contact with the inner seat surface, and the water supply port 18 and the drain valve 28 communicate with each other through the vertical holes 16 a and 16 b of the piston 16. Is discharged from the drain valve 28. Such a drained state can be easily grasped by visually observing that the upper end of the second spindle 40 is lowered through the main body 32 of the operation unit 30.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  Preferably, a reference line 32 a for determining the state of the water drain plug 10 may be provided on the side surface of the main body 32. That is, the reference line 32a indicating the height at which the upper end of the second spindle 40 is located in the water supply state is provided on the side surface of the main body 32, and the water supply state is determined when the upper end of the second spindle 40 coincides with the reference line 32a. You may make it do.

  Preferably, the entire second spindle 40 or the upper end may be colored so that the second spindle 40 can be easily seen.

  In addition, the shape and structure of the water stop valve 24, the drain valve 28, etc. which were shown by the said embodiment and drawing are only examples.

DESCRIPTION OF SYMBOLS 10 Water plug 12 Lower body 14 Outer tube 16 Piston 18 Water supply port 20 Water pipe connection part 22 Valve chamber 24 Water stop valve 26 Guide part 28 Drain valve 28a Drain valve ball receiver 28b Drain valve ball holder attachment part 28c Drain valve ball 30 Operation Portion 32 Main body 32a Reference line 36 First spindle 38 Handle 40 Second spindle 42 Middle shaft suspension 44 Middle shaft

Claims (3)

In a water faucet comprising a lower body to which a water pipe is connected and a drain valve is attached, an outer tube joined to the lower body, and a piston housed in the lower body,
It is arranged at the upper end of the mantle tube, further comprising an operation unit for visually observing the state of the water drain plug,
A first spindle in which the operation unit is made of a transparent or translucent material and has at least a part of the whole or a side surface, and at least a part of the operation part is accommodated in the main body, and an operation handle is attached to the upper end. And a second spindle housed in the main body and provided on the inner surface with a female screw meshing with a male screw on the outer surface of the first spindle, and connected to the piston via an intermediate shaft,
The second spindle is configured to move up and down without rotating together with the rotation of the first spindle;
When the handle is turned to a water supply state or a drainage state, the second spindle moves up and down, and the upper end of the second spindle is visually observed through the main body, thereby grasping the state of the water drain plug. A water tap, characterized by   The configuration of the second spindle that moves up and down without rotating together with the rotation of the first spindle is provided with a chamfered portion for preventing co-rotation on the inner surface of the main body and the outer surface of the second spindle, or the inner surface of the main body The drain plug according to claim 1, wherein the outer surface of the second spindle is formed in an n-gon shape (n ≧ 3).   The reference line for judging the state of the water drain plug is provided on the side surface of the main body, or the entire or upper end portion of the second spindle is colored. Water tap.

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