JP3434268B2 - Gas stopper waterproof structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a waterproof structure for a gas plug. In particular, the present invention relates to a waterproof structure in which a cover made of an elastic synthetic resin is provided on an upper end of a tubular portion above a gas stopper body to cover the tubular portion.

[0002]

2. Description of the Related Art Gas spouts installed around kitchens, bathrooms, etc. are often splashed with water or exposed to water vapor. When the gas plug enters the inside of the gas plug body and corrodes the inner wall of the gas plug body and the members such as the closure, the opening / closing operation of the gas plug may be hindered. In order to solve such a problem, as in Japanese Utility Model Laid-Open No. 55-117675, a waterproof device for preventing water from entering the gas stopper body by covering the tubular portion of the gas stopper body with a watertight cover. It has been known.

As shown in FIG. 5, the gas plug of this example has a gas plug main body 1 in which a tubular portion 10 is continuously provided above a closure accommodating portion 11, and a tapered closed plug having a passage hole 21. A clutch plate which is fitted to the shaft portion 20 through a spring 3 so as to be integrally rotated with the child 2 and an annular member 69 which is disposed on the upper side of the child 2 and is attached to the cylinder portion 10. Four
And a hollow operation knob 7 that is fitted to the operation shaft 40 of the clutch plate 4 and covers the range up to the tubular portion 10, and the operation shaft is provided at the upper end of the tubular portion 10. An upward facing peripheral wall 49 which is closely attached to the outer periphery of 40 along the step
An inner cover 55 made of an elastic synthetic resin provided with is fitted. Further, an outer cover 56 made of a hard resin, which is adhered to the peripheral wall 49 of the inner cover 55 and is metal-plated so as to cover the entire inner cover 55, is fitted on the outer side of the inner cover 55. There is.

Due to such a structure, the cylindrical portion 10
Since the entire upper end of the operation knob 7 is doubly covered by the watertight inner cover 55 and the outer cover 56 which are fitted onto the upper end of the tubular portion 10, the water that has entered the inside of the operation knob 7 is gas stopper. It does not easily enter the main body 1, and the inner wall of the gas stopper main body 1, the closure 2 and the like are not corroded and the opening and closing operation is not disturbed.

However, in this example, when the operation knob 7 is rotated, the outer circumference of the operation shaft 40 and the stepped peripheral wall 49 that is in close contact with the operation shaft 40 slide, so that the operation knob is rotated. In order to rotate 7, the extra force corresponding to the frictional resistance between the operating shaft 40 and the peripheral wall 49 is required, and the operability is worse than that without the inner cover 55. There is. When the sliding is repeated due to long-term use, the peripheral wall 49 is deformed,
Alternatively, the frictional force may be increased due to the deviation of the central axes of the inner cover 55 and the cylindrical portion 10 to deteriorate the operability, or the inner cover 55 may be damaged and the expected waterproof effect may not be exhibited. is there.

[0006]

SUMMARY OF THE INVENTION According to the present invention, "a tubular portion is continuously provided above a closure accommodating portion of a gas stopper body, and a closure accommodated in the closure accommodating portion is rotated. A gas plug having an operation shaft and a rotation lock mechanism provided between the closure and an operation knob attached to the operation shaft, the operation knob being capped in the range up to the tubular portion. An object of the present invention is to prevent the intrusion of water into the main body of the gas stopper without increasing the operating force during the opening / closing operation.

[0007]

[Means for Solving the Problems] * 1 The technical means of the present invention for solving the above problems is that "the upper end portion of the tubular portion covers the entire open end thereof and the operating shaft is not attached. An elastic synthetic resin cap having an opening through which the contact is inserted is provided in the center of the top plate, and a plate-shaped lid member having an outer diameter larger than the opening is provided on the upper side of the cap. Is closely fitted to the outer periphery of the cap and is superposed slidably on the upper surface plate of the cap with a predetermined elastic force. The above technical means act as follows. According to the above means, the entire upper end of the tubular portion is covered with the highly watertight cap and the lid material that is superposed on the cap, and the peripheral wall of the cap is externally fitted to the outer peripheral wall of the tubular portion. Water is prevented from entering the inside of the gas stopper body from the upper end of the portion. When the gas plug is rotated, the lid member tightly fitted on the operation shaft is integrally rotated with the operation shaft, so that the cap fitted on the peripheral portion and the cylindrical portion of the lid member. Is slid around the periphery of the opening. At this time, since the lid member and the cap are brought into close contact with each other in a state of being lightly pressed by the elastic force of the cap, a frictional drag force generated between them due to the sliding is small and a gap is formed in the sliding contact portion. Nor.

* In the paragraph 1 of paragraph 2, "The lid member is locked in a retaining state by an engaging means provided on the operating shaft, and the locking position where the lid member is locked in this way is The material is set to a position where the upper surface plate of the cap is pressed to a predetermined pressing state, "so that the lid material externally fitted on the operation shaft is inadvertently lifted and separated from the upper surface of the cap. Since it does not occur, the entry of water into the gas stopper body is reliably prevented.

[0009] * In the item 3), "The engaging means is a groove portion provided on the operation shaft and opened to the outer peripheral side, and the lid member is tightly fitted onto the forming portion of the groove portion. By doing so, since the lid member is directly locked to the operation shaft, the structure is simpler than the case where the engaging means is separately provided.

* In paragraphs 1, 2, or 3, the cap and the lid member are provided by "a lubricant having a hydrophobic property is present in the sliding contact portion between the upper plate of the cap and the lid member". Since the airtightness and waterproofness between the waterproof cap and the lid are improved, and the slidability between the waterproof cap and the lid member is improved, the frictional drag force generated between the two is reduced, and the opening and closing operation of the gas plug is reduced. The gas plug has better waterproofness and operability because it has almost no effect. Further, as the lubricant, for example, grease or silicone oil is used.

[0011]

The present invention, having the above-mentioned structure, has the following unique effects. Water is prevented from entering the gas stopper main body from the upper end of the cylinder provided above the gas stopper main body, so that the closure housed in the gas stopper main body and the inner wall of the gas stopper main body are corroded. Therefore, the operability of opening and closing the gas plug is not deteriorated. Further, since there is no gap between the cap and the lid member when opening and closing the gas stopper, it is possible to reliably prevent the intrusion of water. Since the frictional drag force generated by the sliding of the lid member and the cap is small, the operability is good because the provision of the waterproof cap and the waterproof plate does not increase the operating force when opening and closing the gas plug. Further, in addition to the above effects, in the item (2), invasion of water into the gas stopper main body is reliably prevented. In section 3, the structure is simple. In item 4, waterproofness and operability are improved.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the embodiments of the present invention described above will be described in detail with reference to the drawings. 1 to 4 show an example of the gas plug according to the embodiment of the present invention. As shown in FIG. 1, this is a screw gas plug having a screw portion for connecting a gas pipe at both ends thereof, and a gas in which a tubular portion 10 is continuously provided above the closure accommodating portion 11. A plug body 1, a closure 2 rotatably accommodated in the closure accommodating portion 11, a clutch plate 4 fitted to a shaft portion 20 of the closure 2 so as to rotate integrally with the closure 2, and A rotation lock mechanism that is disposed on the upper side of the clutch 2 and that includes a locking plate 6 that limits the rotation range of the closure 2, and a range up to the cylindrical portion 10 that is fitted to the operation shaft 40 of the clutch plate 4. A waterproof cap 5 made of elastic synthetic resin, which is composed of a hollow operation knob 7 to be capped and has an opening 51 through which the operation shaft 40 is inserted in a non-contact manner, is provided at an upper end portion of the tubular portion 10. The upper side of the cap 5 has a diameter slightly larger than that of the opening 51 and is fitted to the front side. The disc-shaped elastic synthetic resin waterproof plate 50 which is fitted tightly outside the operating shaft 40 are overlapped slidably in said waterproof cap 5.

As shown in FIGS. 1 and 4, the cylindrical portion 10 of the gas stopper body 1 has an engagement groove 12 formed over the entire circumference on the inner peripheral surface of a certain range from the open end thereof, and the engaging groove 12. Rectangular notches 13 and 13 are provided so as to be cut out downward from the end edges.

The closing member 2 is tapered, and as shown in FIG. 4, a longitudinally elongated rectangular passage hole 21 is formed in the body of the closing member 2 to linearly connect the inlet side and the outlet side of the gas stopper body 1. A cylindrical shaft portion 20 having an upper end formed with a square shaft portion 22 that meshes with the clutch plate 4 in a dipped pair state is continuously provided on the upper end surface of the closure 2.

The clutch plate 4, as shown in FIG.
The operation shaft 4 includes a rectangular base portion 42 formed in the center of the disk portion 41 and an operation shaft 40 continuously provided above the base 42.
Grooves 43, 43 that open to the outer peripheral surface of the operating shaft 40 are formed at the base end portion on the long diameter side of 0. In this example, as shown in FIG. 3, the operating shaft 40 is formed in a shape in which flat portions are formed on both side surfaces of a cylinder, and a parallel side that is in close contact with the cut surface and an arc on the long diameter side that connects both ends thereof. Is groove 4
It matches the troughs of 3,43. In addition, the disc portion 41
An arcuate slit 44 is formed on the lower surface of the above along the base portion 42 fitted on the angular shaft portion 22 of the closure 2. A spring 3 for pressing the closing plate 2 is interposed between the clutch plate 4 and the closing plate 2. Above the clutch plate 4, a ring-shaped engaging member for rotating the closing plate 4 within a predetermined range is provided. Stop plate 6 and C for attaching these to the cylindrical portion 10
A mold locking ring R is provided.

The locking plate 6 is formed by projecting outward from the annular main body and is formed in the end edge of the cylindrical portion 10.
And a pair of tongue pieces 61, 61 which are fitted to the cylindrical portion 10 and are arranged in the cylindrical portion 10 in a positioned state.
An opening for loosely fitting is formed, and a pair of locking pieces 63, 63 are directed inward in the opening so that the base portion 42 can be rotated only within a range of a constant angle (90 degrees). It is formed to project.

Each of these parts is sequentially stacked according to FIG. 4 and the above description, is stacked on the upper surface of the locking plate 6 and is engaged with the engagement groove 12 formed in the cylindrical portion 10. The C-shaped locking ring R is provided in the gas stopper main body 1 so as not to come off, and a waterproof cap 5 is externally fitted to the upper end of the tubular portion 10 in which the above-mentioned components are provided.

As shown in FIGS. 2 to 4, the waterproof cap 5 has a circular plate provided with a circular opening 51 through which the operating shaft 40 is inserted in a non-contact manner, and the cylindrical portion suspended from the outer peripheral edge thereof. It comprises an outer peripheral wall 10 and a peripheral wall 52 which is tightly fitted to the outside, and a waterproof plate 50 which can be tightly fitted to the operation shaft 40 is superposed on the upper surface thereof. In this example, the waterproof cap 5 and the waterproof plate 50 are both molded from polypropylene which is an elastic synthetic resin.
Grease is interposed as a lubricant in the airtight sliding portion where the waterproof plate 50 and the waterproof plate 50 overlap each other.

A through hole 5 formed in the center of the waterproof plate 50.
10 is a groove portion 43 formed at the base end portion of the operation shaft 40.
The waterproof plate 50 has a size and shape that allows the operation shaft 40 to be forcedly inserted into the through hole 510 by the elastic force of the waterproof plate 50 so that the waterproof plate 50 is prevented from coming off the groove portion 43. Are combined. Further, because of the relationship with the formation position of the groove portion 43, the waterproof plate 50 is lightly pressed downward by the upper wall of the groove portion 43 and is lightly pressed against the upper surface of the waterproof cap 5, so that the waterproof cap 5 and The waterproof plates 50 are stacked in a state where they are pressed against each other in the vertical direction by their elastic force.

As shown in FIG. 2, the operation knob 7 is fitted to the upper end of the operation shaft 40 projecting upward from the waterproof plate 50 so as not to rotate relatively and is fixed by a screw 8. . The operation knob 7 is provided with a knob portion 70 that linearly rises, and as shown in FIG.
The knob portion 70 is mounted so as to be orthogonal to the inlet / outlet when the inlet / outlet of the gas plug body 1 is closed by the closure 2 and parallel to the inlet / outlet when opened.

When the gas stopper of this example is rotated by 90 degrees from the closed state by the operation knob 7, the passage hole 21 of the closed 2 communicates with the inlet / outlet to be opened. At this time, the waterproof plate 50 that is tightly fitted to the groove 43 of the operation shaft 40 is rotated integrally with the operation shaft 40, but is overlapped with the peripheral edge of the waterproof plate 50 so as to be pressed against it. Since the waterproof cap 5 is tightly fitted on the outer peripheral wall of the tubular portion 10 of the gas stopper body 1, it is not interlocked with the rotation of the waterproof plate 50. Therefore, the waterproof cap 5 and the waterproof plate 50
Are slid in a state of being pressed against each other, and there is no gap between them, so that water may infiltrate into the gas plug body 1 from the tubular portion 10 even when the gas plug is opened and closed. Absent.

The waterproof cap 5 and the waterproof plate 50 are also provided.
Do not generate large friction because they are pressed against each other only by their respective elastic forces and are closely stacked. Therefore, the frictional drag force generated when the waterproof cap 5 and the waterproof plate 50 are slid is also very small, and the tubular portion 10
By disposing the waterproof means composed of the waterproof cap 5 and the waterproof plate 50 in the above, the operating force required for opening and closing the gas plug is not significantly increased. Further, in this example, the frictional force hardly affects the opening / closing operation of the gas plug because the slidability between the waterproof cap 5 and the waterproof plate 50 is improved by the grease interposed therebetween. Since the hydrophobic grease intervenes to prevent water from entering between the waterproof cap 5 and the waterproof plate 50, the waterproof property is also high. Also, when the operation knob 7 is rotated in the opposite direction to return the gas plug from the open state to the original closed state, they operate similarly.

In the above-described example, the waterproof plate 50 is locked in the operation shaft 40 in a retaining state by engaging with the groove 43 formed in the base end portion of the operation shaft 40. Engagement such as an engagement piece projecting on the outer peripheral surface of the operation shaft 40 or a C-shaped ring or E-shaped ring externally fitted on the outer peripheral surface so that the waterproof cap 5 can be pressed with a predetermined force. It may be a means.

[Brief description of drawings]

FIG. 1 is a sectional view of a gas plug according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the waterproof structure of the gas plug.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an exploded perspective view of a gas plug

FIG. 5 Conventional gas stopper

[Explanation of symbols]

(1) ・ ・ ・ Gas plug body (10) ... Cylinder (2) ・ ・ ・ Closed (20) ... Shaft (3) ・ ・ ・ Spring (4) ・ ・ ・ Clutch plate (40) ... Operation axis (5) ・ ・ ・ Waterproof cap (50) ・ ・ ・ Waterproof plate (6) ・ ・ ・ Lock plate (7) ... Operation knob

─────────────────────────────────────────────────── ─── Continued Front Page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16K 5/00-5/22 F16K 27/00-27/12 F16K 31/60

Claims (4)

(57) [Claims] 1. An operating shaft for rotatably operating a closure accommodated in the closure accommodating portion, wherein a tubular portion is continuously provided above the closure accommodating portion of the gas stopper body, and the closure. A rotation stopper provided between the operating part and the operating knob, which is capped in the range up to the tubular part, attached to the operating shaft. A cap made of an elastic synthetic resin, which is provided in the center of the upper surface plate and has an opening through which the operation shaft is inserted in a non-contact manner, is externally fitted, and an upper diameter of the cap is larger than that of the opening. A waterproof structure for a gas plug, in which a plate-shaped lid member is tightly fitted onto the outer periphery of the operation shaft and is slidably superposed on the upper plate of the cap with a predetermined elastic force. 2. The waterproof structure for a gas plug according to claim 1, wherein the lid member is locked in a retaining state by an engagement means provided on the operation shaft, and the lid member is locked in this manner. The locking position is a waterproof structure of the gas stopper, wherein the lid member is set to a position where the upper surface plate of the cap is pressed in a predetermined pressing state. 3. The waterproof structure for a gas plug according to claim 2, wherein the engaging means is a groove portion provided on the operation shaft and opened to the outer peripheral side, and the lid member is tightly fitted to the formation portion of the groove portion. A waterproof structure for the gas stopper, which is a structure to be fitted on the outside. 4. The waterproof structure for a gas plug according to claim 1, 2 or 3, wherein a hydrophobic lubricant is interposed in a sliding contact portion between the top plate of the cap and the lid member. Waterproof structure of the stopper.