JPH08200543A - Valve equipped with opening/closing indicator - Google Patents

Abstract

PURPOSE: To readily make sure the open or closed state of even such a valve as is designed so that its handle is turned once or more. CONSTITUTION: A transparent handle 9 is connected to a spindle 8 supported against a valve box 3, and an annular case 15 mounted coaxial with the spindle 8 is connected to the valve box 3 in such a way that it cannot rotate relative to the valve box 3. A spiral indicator 20 whose radius increases outwards in the radial direction is inserted into a storage chamber 19 inside the annular case 15, and the inner radial end 20a of the indicator 20 is connected to the handle 9. An annular indicating chamber 25 is provided between the end plate 17 of the annular case 15 and the handle 9, and is allowed to communicate to with the storage chamber 19 by way of an entrance 26 provided in the end plate 17. When the handle 9 is rotated the outer radial end 20b of the indicator 20 in the storage chamber 19 passes through the entrance 26 and advances into the storage chamber 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve capable of displaying the open / closed state of a closing member inserted in a valve box.

[0002]

2. Description of the Related Art As a valve with an opening / closing display device of this type, a valve shown in FIG. 7 of Japanese Utility Model Laid-Open No. 5-75576 is known. In the valve of FIG. 7 in that publication, a cup-shaped handle is fixed to the upper part of a spindle projecting upward from the valve box, a display plate is fixed to the upper end surface of the valve box, and the top wall of the cup-shaped handle is fixed. A viewing window is provided, and the opening and closing characters drawn on the display plate can be viewed through the viewing window.

[0003]

By the way, depending on the use of the valve, the valve may be constructed such that the handle is operated one rotation or more when switching from the fully open state to the fully closed state. In this case, the above-mentioned conventional technique cannot display the open / close display device because it can display only one of the fully open state and the fully closed state within the 360-degree range of the display plate. An object of the present invention is to make it possible to easily check the open / closed state of a valve even if the valve is configured to operate the handle once or more.

[0004]

In order to achieve the above-mentioned object, the present invention comprises a valve having an opening / closing indicator as follows, as shown in FIGS. 1 to 4, for example.

(Invention of Claim 1) In a valve in which a valve opening / closing operation tool A is rotatably supported in a valve box 3, a handle 9 of the operation tool A and the valve box 3 are the same as above. A state in which an annular case 15 is arranged substantially coaxially with 9 and a spiral display 20 whose radius increases toward the outside in the radial direction is blocked in a storage chamber 19 inside the annular case 15 from being visually recognized from the outside. And an annular display chamber 25 is provided between the outer end wall 17 of the annular case 15 and the handle 9 and an inlet / outlet port 26 for communicating the display chamber 25 with the accommodating chamber 19 is provided. It is provided on the outer end wall 17 of the annular case 15 so as to extend in the radial direction, and one of the annular case 15 and the display tool 20 is connected to the valve box 3 such that they cannot rotate relative to each other, and the other is operated as described above. Ingredient A
The display tool 20 that has been advanced into the display chamber 25 is visibly visible from the outer space of the handle 9.

(Invention of Claim 2) The following structure is added to the structure of Claim 1 described above. The annular case 15 is non-rotatably connected to the valve box 3, and the display 20
The inner end portion 20a in the radial direction of the above is rotatably connected to the handle 9.

(Invention of Claim 3) A spindle 8 rotatably supported on the valve box 3, a handle 9 connected to the spindle 8, and a spindle 8 which is rotated substantially coaxially with the valve box 3 with respect to the valve box 3. A ring-shaped case 15 that is disabled, and a display chamber 25 that is provided outside the outer end wall 17 of the ring-shaped case 15.
And a spiral shape that is inserted into the accommodation chamber 19 of the annular case 15 in a rotatable state by at least one of the spindle 8 and the handle 9 and has a radius that increases toward the outer side in the radial direction. The display device 20 and the opening / closing display device 26, which is provided in the outer end wall 17 and extends in the radial direction so as to make the storage chamber 19 and the display chamber 25 communicate with each other. With valve.

(Invention of Claim 4) In the structure of Claim 3 described above, the display chamber 25 is provided between the outer end wall 17 of the annular case 15 and the handle 9.

(Invention of Claim 5) In the construction of Claim 1 or 4, the handle 9 is made of a transparent member.

(Invention of Claim 6) In the structure of Claim 1 or 4, the handle 9 is made of an opaque member, and the viewing window 35 (shown in FIG. 1) facing the display chamber 25 is provided. (See the dotted chain diagram) is provided on the handle 9.

(Invention of Claim 7) In the structure according to any one of Claims 1 to 6, the spiral display is provided on a radially outer portion of the inlet / outlet port 26 provided in the annular case 15. A guide portion 29 for guiding the radially outer end portion 20b of the tool 20 from the accommodation chamber 19 to the display chamber 25.
Is provided.

[0012]

The invention of claim 1 operates as follows, as shown in FIGS. 1 to 4, for example. When the valve 2 is fully opened, the handle 9 is further swung counterclockwise in plan view from the state in which the valve 2 has started to open. Then, by the handle 9, the display tool 20 (or the annular case 15)
Is rotated clockwise, as shown in FIG. 3, most of the display device 20 moves from the inside of the storage chamber 19 to the display chamber 25.
Then, substantially all of the display tool 20 is advanced to the display room 25. By making the display device 19 fully advanced to the outside of the handle 9 from the outer space, the fully open state of the valve 2 can be easily confirmed.

When closing the valve 2 in the fully opened state, the handle 9 is turned clockwise in a plan view. Then, since the display 20 (or the annular case 15) is turned clockwise by the handle 9, the display 20 (or the annular case 15) is shown in FIG. 2 after the state of FIG. As described above, most of the display device 20 is retreated into the accommodation chamber 19 described above, and subsequently all of the display device 20 is retreated into the accommodation chamber 19 above. As a result, it is possible to confirm that the display device 19 cannot be seen and the valve 2 is in the fully closed state.

The inventions of claims 2 to 7 basically operate in the same manner as the invention of claim 1 described above.

The invention according to claim 7 further operates as follows. When the valve 2 is opened again from the fully closed state and the display 20 is turned counterclockwise in plan view, the radial outer end 20b of the display 20 is moved. First, the guide portion 29 is brought into contact with the guide portion 29, and then the guide portion 29 is smoothly advanced to the display chamber 25. Therefore, it is possible to prevent the display tool 20 from idling in the accommodation chamber 19.

[0016]

The present invention has the following effects because it is configured and operates as described above. (Invention of Claim 1) Since the display device formed in a spiral shape is inserted into the annular case and the display device is configured to be rotatable relative to the annular case, the display is made according to the number of rotation of the handle. The tool can be moved in or out of the display room, and the opened / closed state can be confirmed by visually checking the moved display tool from the outer space of the handle. Therefore, even if the valve is configured to operate the handle more than once, the open / closed state of the valve can be easily confirmed.

(Invention of Claim 2) Since the annular case is non-rotatably connected to the valve box and the inner end portion of the indicator is connected to the handle, the indicator can be manufactured to be lighter than the annular case. The tool can be configured as a movable side. For this reason,
The structure for turning the display tool is simple, and the open / close display device can be manufactured at low cost.

(Invention of Claim 3) Since the display device formed in a spiral shape is inserted into the annular case and the display device is configured to be rotatable with respect to the annular case, the display is made according to the rotation number of the handle. The tool can be moved in or out of the display room, and the opened / closed state can be confirmed by visually checking the moved display tool. Therefore, even if the valve is configured to operate the handle more than once, the open / closed state of the valve can be easily confirmed. Further, since the display device, which can be made lighter than the ring-shaped case, is configured on the movable side, the structure for rotating the display device is simple, and the open / close display device can be manufactured at low cost.

(Invention of Claim 4) Since the display chamber is provided between the annular case and the handle, the space inside the handle can be used as a display space. Therefore, the open / close display device can be made compact.

(Invention of Claim 5) Since the handle is made of a transparent member, it is possible to see the advancing / retreating state of the display tool in the display chamber through almost the entire outer circumference of the handle. Therefore, it does not take time to check the open / closed state.

(Invention of Claim 6) Since the handle is made of an opaque member and the viewing window is provided in the same as above, it is possible to visually check the advancing / retreating state of the display tool only from the viewing window. The open / closed state of the valve can be surely confirmed.

(Invention of Claim 7) When the valve is operated to open from the fully closed state, the indicator is smoothly pushed out to the display chamber along the guide portion to prevent the indicator from idling in the accommodation chamber. it can.

[0023]

1 to 4 show one embodiment of the present invention. First, the overall structure of the valve will be described with reference to the elevation view of FIG. A cylinder valve 2 on the neck 1a of the gas cylinder 1.
The leg screw portion 4 of the valve box 3 is fixed by screwing. An outlet nozzle 5 is laterally projected from a height of the valve box 3. The gas inlet opened on the lower surface of the leg screw portion 4 is communicated with the gas outlet opened on the left end surface of the outlet nozzle 5 through the closing valve chamber.

A spindle 8 is rotatably and airtightly supported by a valve lid 7 which is screwed and fixed to the upper portion of the valve box 3.
An open / close valve (not shown) is connected to the lower end of the spindle 8, and a handle 9 made of transparent plastic is connected to the upper part of the spindle 8. The spindle 8 and the handle 9 constitute an operating tool A for opening and closing the valve. A nut 10 fixed to the upper end of the spindle 8 is urged upward by a spring 11, so that the mid-height part of the spindle 8 is closed and brought into contact with a back seat (not shown) in the valve box 3. To be done. Reference numeral 12 is a safety valve.

In the cylinder valve 2 having the above structure, a device for displaying the open / closed state of the open / close valve body (not shown) is provided. Hereinafter, the open / close display device will be described with reference to FIGS. 1 and 2 to 4 above. FIG. 2 is a sectional view taken along line II-II in FIG. 1 showing the state of the display tool when the opening / closing valve body starts to open. FIG. 3 shows a state of the display tool when the above-mentioned on-off valve body is operated to near full opening, and is a view corresponding to FIG. 2 described above. FIG. 4 shows IV in FIG. 1 above.
FIG. 4 is a sectional view taken along the line IV.

An annular case 15 is arranged between the handle 9 and the valve box 3 substantially coaxially with the spindle 8. The annular case 15 is composed of a support cylinder 16 and an end plate 17 made of an opaque body. The end plate 17
The outer end wall of the annular case 15 is constituted by the above. The polygonal through hole 16a of the support cylinder 16 is externally fitted onto the hexagonal portion 7a of the valve lid 7 from above, whereby the annular case 15 is prevented from rotating about its axis. It is supported by the valve box 3.

The end plate 17 is provided in the annular case 15.
An annular accommodation chamber 19 is provided on the lower side of the
A spiral display 20 which is colored red or the like is inserted therein substantially coaxially with the spindle 8. The display tool 20
Is formed in a spiral shape whose radius increases toward the outer side in the radial direction, and the inner end portion 20a in the radial direction is rotatably connected to the handle 9. More specifically, as shown mainly in FIG. 2, the locking portion 2 of the handle 9 is fitted into the locked hole 22 provided at the center of the display tool 20.
3 is inserted. Although the locked hole 22 and the locking portion 23 are formed in a square shape, they may have other shapes.

Further, the end plate 17 and the handle 9 are
An annular display chamber 25 is provided between and. The display room 2
5 and the accommodation chamber 19 are communicated with each other through the entrance / exit 26. In other words, the end plate 17 is cut so as to extend in the radial direction, and the gap between the one cutting edge 27 and the other cutting edge 28 bent upward constitutes the entrance 26. The radially outer portion of the other cutting edge 28 has a radially outer end portion 20 of the spiral display device 20.
A guide portion 29 for guiding b from the accommodation chamber 19 to the display chamber 25 is folded down.

The above open / close display device operates as follows. When the valve 2 is fully opened, the handle 9 is further swung counterclockwise in plan view from the state in which the valve 2 starts to open. Then, the locking portion 23 of the handle 9 pivots the locked hole 22 of the display tool 20 in the counterclockwise direction. As a result, as shown in FIG. 3, most of the display tool 20 is pushed out from the inside of the accommodation chamber 19 below the end plate 17 to the display chamber 25 above the end plate 17.
Subsequently, almost all of the display device 20 is pushed out into the display chamber 25, so that the wide display device 19 thus pushed out is seen through the transparent handle 9 so that the valve 2 is fully opened. You can confirm that there is.

When closing the valve 2 in the fully open state, the handle 9 is turned clockwise in a plan view. Then, the locking portion 23 of the handle 9 pivots the locked hole 22 of the display tool 20 in the clockwise direction. As a result, the display tool 20 will be in the state of FIG.
As shown in FIG. 2, most of the display tool 20 is pushed into the storage chamber 19 and then the display tool 2 is pressed.
All 0s are pushed into the accommodation chamber 19 of the above. As a result, the display device 19 cannot be seen, and the valve 2
It can be confirmed that is fully closed.

When the valve 2 is opened again from the fully closed state and the display 20 is turned counterclockwise in plan view, the outer end of the display 20 in the radial direction is rotated. The portion 20b first comes into contact with the guide portion 29, and is then smoothly pushed out along the guide portion 29 into the display chamber 25. Therefore, the above-mentioned display 2
It is possible to prevent 0 from idling in the accommodation chamber 19. As described above, by forming the display device 20 in a spiral shape, it is possible to set the turning operation for opening and closing the handle 9 to a desired number of rotations larger than one rotation.

The above embodiment can be modified as follows. The handle 9 may be made of an opaque member instead of being made of a transparent member. In this case, as shown by the chain double-dashed line diagram in FIG. 1, the handle 9 is provided with a peep window 35 facing the display chamber 25. Then, the state of the display tool 20 in the display chamber 25 is externally viewed through the viewing window 35. Note that the viewing window 35 may be only one, but may be provided in plural in the circumferential direction.

The cross-sectional shape of the above-described display tool 20 can be formed in an elliptical shape or a circular shape instead of being formed in a rectangular shape. The above-mentioned display tool 20 has a handle 9
It is also possible to connect to the spindle 8 instead of connecting to. The display tool 20 includes a radially inner end portion 20.
Instead of connecting a to the handle 9 or the spindle 8, the outer end portion 20b in the radial direction or the middle portion may be connected to the handle 9 or the spindle 8 as above. The annular case 15 is replaced with the handle 9 instead of being connected to the valve box 3.
May be connected to. In this case, the display 20 is the valve box 3
Linked to

The spindle 8 and the handle 9 may be arranged in the horizontal posture while the outlet nozzle 5 is kept in the horizontal posture in FIG. The outlet nozzle 5 is set in an upward posture, and the spindle 8 and the handle 9 are the same.
May be arranged in a sideways posture. The above-mentioned valve with an opening / closing display device is replaced with the one attached to the gas cylinder 1,
It may be attached to the pipe.

[Brief description of drawings]

FIG. 1 is an elevational view of a valve provided with an opening / closing display according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.
The state of the display tool at the time of starting to open the valve is shown.

FIG. 3 is a view showing a state of the display tool when the valve is operated close to full opening, and corresponds to FIG. 2 described above.

4 is a cross-sectional view taken along the line IV-IV in FIG. 1 described above.

[Explanation of symbols]

3 ... Valve box, 8 ... Spindle, 9 ... Handle, 15 ... Annular case, 17 ... Outer end wall (end plate), 19 ... Storage chamber, 20 ...
Display tool 20a ... Radial inner end of display tool 20, 20b
... radially outer end of the display tool 20, 25 ... display chamber, 26 ...
Doorway, 29 ... Guide part, 35 ... Viewing window, A ... Operation tool.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Masui 4-6-1 Shimozakabe, Amagasaki City, Hyogo Prefecture Neriki Co., Ltd. (72) Inventor Toshiichi Takahashi 3-4-8 Honmachi, Chuo-ku, Osaka Issue Iwatani Sangyo Co., Ltd. (72) Inventor Tadahiko Suzuki 1-6-10 Shinya, Neyagawa-shi, Osaka Within Suzuki Seiko Co., Ltd.

Claims (7)

[Claims] 1. A valve in which an operating tool (A) for opening and closing a valve is rotatably supported on a valve box (3), the operating tool (A) as described above.
Between the handle (9) and the valve box (3) above
A ring-shaped case (15) is arranged substantially coaxially with (9), and a spiral display (20) whose radius increases toward the outer side in the radial direction in a storage chamber (19) in the ring-shaped case (15). )
Is inserted in a state of being prevented from being visually recognized from the outside, and an annular display chamber (25) is provided between the outer end wall (17) of the annular case (15) and the handle (9). An inlet / outlet (26) for communicating the (25) and the accommodation chamber (19) is provided in the outer end wall (17) of the annular case (15) to extend in the radial direction, and the annular case (15) ) And the above display
One of (20) and the valve box (3) is non-rotatably connected and the other is rotatably connected to the operation tool (A), and is advanced into the display chamber (25). Display (2
The valve with an opening / closing display device is characterized in that (0) is configured to be visible from the outer space of the handle (9). 2. The valve with an opening / closing display device according to claim 1, wherein the annular case (15) is non-rotatably connected to the valve box (3), and a radial inside of the display tool (20) is provided. A valve with an opening / closing display device, wherein an end portion (20a) is rotatably connected to the handle (9). 3. A spindle (8) rotatably supported on the valve box (3) and a handle (9) connected to the spindle (8).
And the above-mentioned valve box (3) almost coaxially with the above-mentioned spindle (8)
A ring-shaped case (15) provided so as not to rotate with respect to the display chamber and a display chamber provided outside the outer end wall (17) of the ring-shaped case (15)
(25) and at least one of the spindle (8) and the handle (9) are rotatably inserted into the accommodating chamber (19) of the annular case (15) and outward in the radial direction. The spiral display device (20) whose radius increases as it goes, and the outer end wall so that the storage chamber (19) and the display chamber (25) communicate with each other.
A valve with an opening / closing display device, comprising: a port (26) provided in (17) extending in the radial direction. 4. The valve with an opening / closing display device according to claim 3, wherein the display chamber (25) is provided between an outer end wall (17) of the annular case (15) and the handle (9). A valve with an opening / closing display device, which is provided in. 5. The valve with an open / close display device according to claim 1, wherein the handle (9) is made of a transparent member. 6. The valve with an opening / closing display device according to claim 1, wherein the handle (9) is made of an opaque member, and the viewing window faces the display chamber (25).
(35) A valve with an open / close display device, characterized in that the handle (9) is provided. 7. The valve with an opening / closing display device according to claim 1, wherein the spiral is provided on a radially outer portion of the inlet / outlet port (26) provided in the annular case (15). A guide portion (29) for guiding the radial outer end (20b) of the shaped display tool (20) from the storage chamber (19) to the display chamber (25),
A valve with an open / close display device characterized in that