JPH0949582A - Open/close indication device for valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an open/close indication device for a valve by which these exposure parts are exposed outside selectively, the open/close state of the valve can be confirmed and which can be produced at an extreme low cost by deciding one side to a colour for indicating that the valve is blocked up and the other side to the colour for indicating that the valve is released. SOLUTION: By the change of a colour exposed from first/second upper side indication window and lateral side indication window 10b, 10c, 11a, 11b in response to the open/close operation of a valve main body V by the rotation of a handle H, an operator can confirm the open/close state of the valve main body V by the colour easily. Especially, in the open/close indication device 1 of a valve, the first/second upper side indication windows 10b, 10c are formed on a first rotary plate part 10 constituting of a rotation indication part and the first/second lateral side indication windows 11a, 11b are formed on a second rotary plate part 11. Thereby, the open/close state of the valve main body V can be confirmed from the upper side of the valve main body V as well as its lateral side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a valve open / close display device for automatically switching and displaying an open / closed state of a valve used in various industrial facilities by rotating a handle.

[0002]

2. Description of the Related Art The open / closed state of a valve used for liquid or gas piping has a serious influence on the operation and safety management of equipment, and therefore the open / closed state must be constantly monitored. Therefore, conventionally, as an indication of the open / closed state of such a valve, the indication plate showing "open" or "closed" on the valve, the indication plate colored red or blue, or the like is removed or slid to operate the valve. A method of displaying the open / closed state is adopted. However, in such a method, it is premised that the operator definitely operates,
If the operation is not performed reliably, the intended purpose cannot be achieved. Therefore, in order to solve such a problem in the related art, for example, a valve opening / closing display device disclosed in Japanese Utility Model Publication No. 3-31902 and an actual Japanese Utility Model Publication 5-3526.
A handle with an opening / closing display mechanism described in Japanese Patent No. 1 has been proposed. In the valve opening / closing display device described in Japanese Utility Model Publication No. 3-31902, two different colored bands having a width equal to the stroke of the valve rod are provided on the outer circumference of the valve body in the moving direction of the valve rod. A tubular portion of a cap, which is formed adjacently and loosely fitted to the valve rod, is covered around the two colored bands, and a window hole having a width equal to the width of one colored band is formed in the tubular portion. It is configured such that one of the colored bands on the outer peripheral surface of the part is colored with the same color and the cap is pressed against the handle by a coil spring inserted inside the cap. Further, the handle with an opening / closing display mechanism described in Japanese Utility Model Publication No. 5-35261 has a handle mounting display plate on which the letters "OPEN" and "SHUT" are written, and the above-mentioned letters are selectively exposed. And a handle having a window formed therein. The handle is rotated to operate the "OPEN" and "SH" through the window.
The character "UT" is selectively exposed.

[0003]

However, in each of the above-mentioned conventional devices and handles, the open / closed state of the valve cannot be sufficiently confirmed from a place distant from the valve, and the valve cannot be manufactured at low cost. Cannot be easily installed on existing valves. That is, in the valve opening / closing display device described in Japanese Utility Model Publication No. 3-31902, the colored band equal to the stroke of the valve rod is exposed from the window hole formed in the cap. The width of the band exposed to the outside is extremely short and cannot be easily confirmed from a place away from the valve. Also,
In the handle with an opening / closing display mechanism described in Japanese Utility Model Publication No. 5-35261, "OPEN" and "SHU" are used.
Since the window where the letter "T" is selectively exposed is formed on the top surface of the handle, the open / closed state of the valve must always be checked from above the valve, and also easily from a remote location. In addition, since the handle itself needs to be newly manufactured, it cannot be manufactured at low cost.

Therefore, the present invention has been proposed in order to solve the problems of the above-described conventional valve open / close display device and handle with an open / close display mechanism, and the valve can be reliably operated even from a position away from the valve. An object of the present invention is to provide a valve open / close display device capable of confirming an open / closed state and manufactured at extremely low cost.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object. In the first invention, an insertion hole through which a stem is inserted is formed in the center. A disk-shaped first fixing plate portion, a fixing portion that hangs from the lower surface of the first fixing plate portion and into which a nut fixed to the valve body is inserted, and a fixing portion that hangs from the outer peripheral edge of the first fixing plate portion. A fixed display member having a tubular second fixed plate portion formed by
A disc-shaped first rotating plate portion having a press-fitting hole into which the stem is press-fitted, which is located above the first fixed plate portion and has an upper display window, and the first rotary plate portion.
A rotary display member having a second rotary plate portion that is hung from the outer peripheral edge of the rotary plate portion, is located on the outer peripheral side of the second fixed plate portion, and has a lateral display window opened; An elastic member that is externally fitted to the stem and urges the fixed display member toward the first fixed plate portion, and at least one of the fixed display member and the rotary display member is formed. A first upper exposed portion that is exposed through the upper display window when the rotation display member is rotated half the rotation range of the rotation display member. It has the same color as the first lateral exposed portion exposed through the lateral display window, and through the upper display window when the rotary display member is rotated by the remaining half of its rotation range. Exposed through the exposed second upper exposed portion and the side display window The second lateral side exposed portion is characterized in that formed by the color different from the a same color the first upper exposed portion. The number of the upper display windows and the lateral display windows may be singular or plural, and the number of the upper exposed portions and the lateral exposed portions is twice the number of the respective display windows. It should be done.

According to a second aspect of the present invention, the outer surface of the rotary display member has a color of the first upper exposed portion and the first lateral exposed portion or a second upper exposed portion and the second lateral exposed portion. The color is the same as the color of the exposed portion.

According to a third aspect of the present invention, a disk-shaped first fixing plate portion is formed in the center of which an insertion hole for inserting a stem is formed, and the first fixing plate portion hangs from the lower surface of the first fixing plate portion. A fixing portion into which a nut fixed to the valve body is inserted;
A fixed display member having a cylindrical second fixing plate portion hanging down from the outer peripheral edge of the fixing plate portion, and an insertion hole through which the stem is inserted are formed at the center and in the vicinity of the insertion hole. A disk-shaped first rotating plate portion having an engaging hole formed therein, and a disc-shaped first rotating plate portion which is hung from the outer peripheral edge of the first rotating plate portion and is located on the outer peripheral side of the second fixed plate portion and which also has a display window. A rotary display member having a second rotary plate portion having an opening formed therein, an insertion hole which is disposed above the rotary display member and through which the stem is inserted, and the stem is rotationally operated. A movable member having an engaging portion that engages with the handle and an engaging protrusion that engages with the engaging hole is formed on the lower surface, and the fixed display member that is externally fitted to the stem. An elastic member that urges toward the first rotating plate portion, and the fixed display member or the rotating display member Is to characterized in that it comprises a stopper for restricting the rotation range of the rotating display member due to the rotational operation of the formed to become stem on at least one, and.

According to the valve opening / closing display device of the above-mentioned first invention, when the stem is rotated by the existing handle, the rotation display member is rotated by the rotation of the stem, and the rotation display member is rotated by a predetermined angle. When rotated, the stopper restricts the rotation of the rotation display member, and when the stem is further rotated, only the stem is rotated. Then, by the rotation of the rotary display member, the first upper exposed portion or the second upper exposed portion of the first fixing plate portion forming the fixed display member is selectively opened on the rotary display member. The first lateral side exposed portion or the second lateral side exposed portion of the second fixing plate portion constituting the fixed display member is exposed to the outside via the lateral side display window. The first upper exposed portion and the first lateral exposed portion have the same color, and the second upper exposed portion and the second lateral exposed portion have the same color. In addition, since the color is different from that of the above-mentioned first upper exposed portion, one of these exposed portions is selected by deciding one with a valve closed color and the other with an open color. Exposed to the outside,
Therefore, it is possible to confirm the open / closed state of the valve by confirming at least one of the display windows opened in the rotary display member. In particular, since the lateral display window is formed on the outer peripheral surface of the rotary display member, the open / closed state of the valve can be more reliably confirmed even from a distance.
The change in the protruding length of the stem due to the turning operation of the handle is eliminated by the elastic force of the elastic member constantly urging the fixed display member in the direction of the first fixed plate portion forming the rotary display member. ing.

According to the valve opening / closing display device of the second invention, the color of the outer surface of the rotary display member is the same as the color of the first upper exposed portion or the second upper exposed portion. Therefore, the state in which a color different from the color of the rotary display member is exposed from the upper display window or the horizontal display window (the state in which the valve is open or closed) is more easily achieved. Can be confirmed.

Further, according to the valve opening / closing display device of the third aspect, when the stem is rotated by the existing handle, the movable member engaged with the stem is rotated together,
When the engaging projection formed on the lower surface of the movable member engages with the engaging hole formed on the upper surface of the rotary display member, the rotary display member is rotated together and the rotary display member is rotated by a predetermined angle. Then, the rotation of the rotation display member is restricted by the stopper. Thus, when the rotation of the rotation display member is restricted by the stopper, the engagement between the engagement hole and the engagement protrusion is released, and only the movable member is rotated together with the stem.
Then, due to the rotation of the rotary display member, the colored plate portion constituting the fixed display member is exposed to the outside through the display window formed in the rotary display member. Therefore, even in the case of the valve opening / closing display device according to the third aspect of the present invention, the opening / closing state of the valve can be surely confirmed even from a distance, similarly to the valve opening / closing display device according to the first aspect of the present invention. it can.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a valve opening / closing display device according to an embodiment of the present invention will be described in detail with reference to the drawings. First, the first embodiment will be described.

As shown in FIG. 1, the valve opening / closing display device 1 is composed of a fixed display member 2, a rotary display member 3, and a coil spring 4 as an elastic member. The fixed display member 2 is formed of synthetic resin or metal, and is formed in a disc shape by inserting an insertion hole 5a through which the stem S constituting the valve body V is inserted. A first fixing plate portion 5, a fixing portion 6 that is formed from a lower surface of the first fixing plate portion 5 and is formed into a substantially cylindrical shape, and a fixing portion 6 that is formed from an outer peripheral edge of the first fixing plate portion 5. It is composed of a cylindrical second fixing plate portion 7 and first and second stoppers 8 and 9 projecting from the upper surface of the first fixing plate portion 5. Then, the upper surface of the first fixing plate portion 5 is divided into four equal parts, and the first to fourth colored portions 5b, 5c, 5d and 5e are formed as upper exposed portions constituting the present invention. , The first colored portion 5b and the third
The colored portion 5d of the second colored portion 5c is colored blue.
And the fourth colored portion 5e are colored red. Also,
The outer peripheral surface of the second fixing plate portion 7 is also divided into four equal parts and is divided into fifth parts.
Through to the eighth colored portions 7a, 7b, 7c, 7d are formed as the lateral side exposed portions constituting the present invention, and the fifth and seventh colored portions 7a, 7c are the first and third colored portions. 5b,
5d is colored blue, and the seventh and eighth colored portions 7b and 7d are colored red, which is the same color as the second and fourth colored portions 5c and 5e. There is. Further, the fixing portion 6 is a portion into which the nut N fixed to the valve body V is inserted, the outer peripheral surface is formed in a cylindrical shape, and the inner peripheral surface is formed as shown in FIG. 1 in total so that the nut N can be easily inserted.
Two groove portions 6a are formed. The first and second stoppers 8 and 9 are formed in a cylindrical shape, and their respective heights are the rotation display member 3 described later.
The thickness is the same as the wall thickness of the first rotary plate portion 10 constituting the.

The rotary display member 3 is formed into a disk shape, and has a first rotary plate portion 10 having a press-fitting hole 10a at the center thereof, into which the stem S is press-fitted.
A cylindrical second rotary plate portion 11 that hangs from the outer peripheral edge of the rotary plate portion 10 is integrally molded, and the first rotary plate portion 10 has a substantially fan-shaped first and second rotary plate portion 11. Second upper display windows 10b and 10c are opened on both sides of the press-fitting hole 10a. The press-fitting hole 10a has an outer diameter that is substantially the same as the outer diameter of the stem S that constitutes the valve body V. The O-ring 12 (see FIG. 3) is provided on the inner peripheral surface of the press-fitting hole 10a. ) Is provided. Also, the first
The first to fourth cuts into which half of the outer peripheral surface of the first or second stopper 8 or 9 formed in the fixed display member 2 is inserted at both ends of the second upper display window 10b or 10c. Notch grooves 10d, 10e, 10f, 10g are formed in an arc shape. Further, the second rotary plate portion 11 is provided with first and second lateral display windows 11a and 11b which are cut out from the lower end side to the upper end side. The outer surface of the rotary display member 3 configured as described above is colored blue in the present embodiment.

In the valve opening / closing display device 1 configured as described above, first, the coil spring 4 is externally fitted and inserted into the stem S, and then the insertion hole 5a formed in the fixed display member 2 is inserted. The stem S is inserted, and the nut N fixed to the valve body V is inserted into the fixed portion 6. Next, the press-fitting hole 1 formed in the rotation display member 3
0a, the first stopper 8 is located in the first upper display window 10b, and the second stopper 9 is located in the second upper display window 10c. To be installed. The stem S is fitted into a fitting hole H ₁ formed in the center of an existing handle H for rotating the stem S, and a screw portion formed on the upper end of the stem S. A nut N ₁ for fixing the handle is screwed onto S ₁ . As a result, as shown in FIG.
A valve opening / closing display device 1 is mounted below the handle H. It should be noted that this valve opening / closing display device 1 is a valve body V
If the valve body V is in the closed state when the valve body V is attached to the first stopper 8, the rotation display member 3 is forcibly rotated in the counterclockwise direction by the fingers to move the first stopper 8 to the first stopper 8. The notch groove 10d and the second stopper 9 are brought into contact with the fourth notch groove 10g, respectively.

The operation of the valve opening / closing device 1 will be described below. For convenience of description, the description will be given from the state where the valve body V is opened. In this state,
As shown in FIG. 4, the first stopper 8 is in contact with the first cutout groove 10d, and the second stopper 9 is in contact with the fourth cutout groove 10g.
First and second upper display windows 10b, 10c formed on the
From, the first colored portion 5b or the third colored portion 5d colored in blue constituting the fixed display member 2 is exposed, and from the first and second lateral display windows 11a and 11b,
The fifth colored portion 7a or the seventh colored portion 7c, which is also colored blue, is exposed. Therefore, in this state (the state where the valve body V is open), the entire outer surface of the open / close display device 1 of this valve is blue. Then, in this state, when the handle H is rotated clockwise by the worker, the rotation display member 3 is also rotated along with the rotation of the handle H. For example, when the handle H is rotated in the clockwise direction by about 45 degrees from the initial state, the rotation display member 3 is also rotated by about 45 degrees as shown in FIG. From the upper display window 10b of the
From the second upper display window 10c, the third colored portion 5d colored blue and the second colored portion 5d colored red. The colored portion 5c is exposed to the outside, and in the same manner, the fifth colored portion 7 colored blue from the first lateral display window 11a.
a and the eighth colored portion 7d colored red, the second
The seventh colored portion 7c colored blue and the sixth colored portion 7b colored red are exposed from the lateral display window 11b.

Further, when the handle H is further rotated in the clockwise direction, the rotary display member 3 is also rotated, and as shown in FIG. 6, the first stopper 8 formed on the fixed display member 2 eventually. Is the first upper display window 10d
The second stopper 9 is brought into contact with the second notch groove 10e formed in the above, and the second stopper 9 is brought into contact with the third notch groove 10f. In this state, the first upper display window 10b
From, only the fourth colored portion 5e colored red, and from the second upper display window 10c, only the second colored portion 5c colored red is exposed to the outside, similarly, From the first horizontal display window 11a, only the eighth colored portion 7d colored red, and from the second horizontal display window 11b only the sixth colored portion 7b colored red. Exposed. When the handle H is further rotated in the clockwise direction, the rotation display member 3 is not further rotated by the first and second stoppers 8 and 9, and only the handle H is rotated. To be

On the other hand, when the handle H is rotated counterclockwise from the state shown in FIG. 6 (the state where the valve body V is opened) (when the valve body V is closed), the handle H is rotated. Along with this, the rotary display member 3 also rotates, and the above-described first and second upper side display windows and side display windows 10 are provided.
b, 10c, 11a, 11b exposed from the 4th, 2nd, 8th and 6th colored portions 5e, 5c, 7d, 7b, the 1st, 3rd, 5th and 5th colored blue The seventh colored portions 5b, 5d, 7a, 7c are changed to the initial state shown in FIG. It should be noted that although the stem S that is rotated by the rotation operation of the handle H changes the protruding length from the valve body V, the fixed display member 2 is always urged upward by the coil spring 4. First and second stoppers 8 and 9 and first or second upper display window 10
It is surely engaged with b and 10c.

As described above, according to the valve opening / closing display device 1 described above, the opening / closing operation of the valve body V by the rotation of the handle H causes the first and second upper side display windows and the side display windows 10b, 10c. , 11a, 11b, the exposed color is changed, so that the operator can easily check the open / closed state of the valve body V by the color. Especially,
In the valve opening / closing display device 1, the first and second display devices are provided.
Upper display windows 10b and 10c are formed in the first rotary plate portion 10 that constitutes the rotary display member 3, and the first and second
Since the horizontal display windows 11a and 11b are formed on the second rotary plate portion 11, the open / closed state of the valve body V can be confirmed from above and from the side of the valve body V. Further, in the valve opening / closing display device 1, the first, third, fifth and seventh coloring portions 5b, 5 showing the open state are provided.
Since the d, 7a, 7c and the outer surface of the rotary display member 3 are colored in the same color, the fourth, second, eighth and fourth colors colored as a closed state (red) are shown. When each of the colored portions 5e, 5c, 7d, 7b of 6 is exposed, it becomes extremely conspicuous, and the open / closed state of the valve body V can be more surely confirmed.

In the above embodiment, the first, third, fifth and seventh colored portions 5b, 5 are formed so that the closed state of the valve body V can be easily confirmed.
Although the d, 7a, 7c and the outer surface of the rotary display member 3 are colored in the same color, the valve body V is reversed.
So that you can easily check that the
The color of the outer surface of the rotary display member 3 may be colored red, which is the same color as the fourth, second, eighth and sixth colored portions 5e, 5c, 7d and 7b. . Also,
In the embodiment described above, the press-fitting hole 10a formed in the rotary display member 3 has the O-ring 12 arranged therein. However, the present invention (the invention according to claim 1) is not necessarily the above. The O-ring 12 does not have to be formed, and when the stem S is press-fitted and the rotation display member rotates together with the rotation of the stem S, and the rotation is restricted by the stopper, the O-ring 12 does not rotate together with the stem S. Any structure can be used as long as it is stopped.

Next, an embodiment of the second invention will be described. As shown in FIG. 7, the valve opening / closing display device 20 includes a fixed display member 21 fixed to the valve body V.
And the rotary display member 2 that covers the fixed display member 21.
2, a movable member 23 provided on the upper surface of the rotation display member 22, and a coil spring 24 as an elastic member.

The fixed display member 21 is made of synthetic resin or metal, and has an insertion hole 25a at the center through which the stem S of the valve body V is inserted. A disk-shaped plate portion 25, a fixing portion 26 that is hung from the lower surface of the disk-shaped plate portion 25 and is formed into a substantially cylindrical shape, and a cylindrical fixing that is hung from the outer peripheral edge of the disk-shaped plate portion 25. It is composed of a plate portion 27, and first and second stoppers 28 and 29 which are laterally projected from the upper end of the outer peripheral surface of the fixed plate portion 27. Then, the outer peripheral surface of the disk-shaped plate portion 25 is divided into four equal parts to form first to fourth colored portions 27a, 27b, 27c, 27d, and the first colored portion 27a and the first colored portion 27a. The third colored portion 27c is colored blue, and the second colored portion 27b and the fourth colored portion 27d are colored red. Further, the fixing portion 26 is a portion into which the nut N fixed to the valve body V is inserted, and the outer peripheral surface is formed in a cylindrical shape, while the inner peripheral surface is, as shown in FIG. It has the same shape as the outer peripheral shape of the nut N. In addition, the first and second
The stoppers 28 and 29 of are, as shown in FIG. 7 and FIG.
The protrusion length is formed on both sides of the insertion hole 25a, and the projection length of each is the same as the thickness of the second rotary plate portion 31 constituting the rotary display member 23 described later. .

The rotation display member 22 is formed in a disk shape, and has a first rotation plate portion 30 formed at its center with an insertion hole 30a through which the stem S is inserted, and the first rotation plate portion 30. The second cylindrical shape that hangs from the outer peripheral edge of the plate portion 30.
The rotary plate portion 31 is integrally formed. Then, as shown in FIG. 7, the first to third engagement holes 3 are provided in the vicinity of the insertion hole 30a in the first rotary plate portion 30.
0b, 30c and 30d are provided. Further, the second rotary plate portion 31 is provided with first and second upper display windows 31a and 31b which are cut out from the lower end side to the upper end side. Then, on the left and right sides of the upper end of the first display window 31a, first and second cutout portions 31c, 31 into which half of the first or second stoppers 28, 29 are inserted.
In addition, d is formed on the left and right sides of the upper end of the second display window 31b, and third and fourth cutouts 31e and 31f are formed.

The movable member 23 is arranged on the upper surface or above the first rotary plate portion 30 constituting the rotary display member 22, and is made of a metal material such as iron. And a disc-shaped bottom plate portion 33 having an insertion hole 33a formed at the center through which the stem S is inserted.
And a cylindrical erected portion 34 erected upward from the outer peripheral edge of the bottom plate portion 33. The upright portion 34 has a large number of slits 34a formed from the upper end to the lower portion, and the slits 34a, 34 on both sides are formed.
By bending the protruding piece 34b formed by a to the outside, three engaging recesses 34c, 34c, 34c are formed. Incidentally, these engaging recesses 34c, 34c, 34
c is the three connecting portions H ₂ , H ₂ ,
This is the part where H ₂ is inserted and engaged. In addition, the movable member 23
As shown in FIG. 9, a bottom surface of the bottom plate portion 33 constituting the first engaging portion 30 is engaged with first to third engaging holes 30b, 30c, 30d formed in the first rotating plate portion 30. First to third engaging protrusions 33b, 33c, 33d are formed.

In the valve opening / closing display device 20 constructed as described above, first, the coil spring 24 is fitted onto the stem S, and then the fixed display member 21.
The stem S is inserted into the insertion hole 25a formed in the above, and the nut N fixed to the valve body V is inserted into the fixed portion 26. Next, the stem S is inserted into the insertion hole 30a formed in the rotation display member 22, the first stopper 28 is located in the first display window 31a, and the second stopper 29 is located. Is the second display window 31b
Attach so that it is located inside. Then, the stem S is further inserted into the insertion hole 33a of the movable member 23, and finally the fitting hole H formed at the center of the existing handle H for rotating the stem S on the upper end side of the stem S. fitted into the _1, further screwed nut N ₁ for the handle secured to the screw portion S ₁ formed on the upper end of the stem S. As a result, as shown in FIG. 10, the valve open / close display device 20 is mounted below the handle H. If the valve body V is closed when the valve opening / closing display device 20 is attached to the valve body V, the rotary display member 22 is rotated counterclockwise with fingers.
One end side of the first stopper 28 is provided with a first cutout groove 31.
c, and one end side of the second stopper 29 is brought into contact with the fourth notch groove 31f.

The operation of the valve opening / closing device 20 will be briefly described below. First, in the opening / closing display device 20 of the valve, the movable member 23 is rotated by rotating the handle H, and by the rotation of the movable member 23, the first to the second members formed on the movable member 23 are rotated. As shown in FIG. 11, the third engagement protrusions 33b, 33c, 33d are changed from the state shown in FIG. 10 to the first to third engagement holes 30b, 30c, 30d formed in the rotation display member 22. Engage in. As a result, when the handle H is further rotated, the rotation display member 22 is also rotated at the same time, and the first and second stoppers 28 and 29 come into contact with the first and second display windows 31a and 31b. by this,
The blue first and third colored portions 27a and 27c that were exposed from the first or second display windows 31a and 31b until then.
The second and fourth colored portions 2 colored red.
7b and 27d are exposed. And further handle H
Is rotated, the rotation of the rotation display member 22 is restricted by the first and second stoppers 28 and 29.
The rotational force of the handle H forcibly releases the engagement between the first to third engagement protrusions 33b, 33c, 33d and the first to third engagement holes 30b, 30c, 30d. Only the movable member 23 is rotated together with the handle H.

Therefore, even in the case of the valve opening / closing display device 20 having the above-mentioned structure, the first and second display windows 31a and 31b can be operated by rotating the handle H.
First to fourth colored portions 27a, 27b, 2 exposed to the
Since 7c and 27d are changed, the open / closed state of the valve body V can be surely confirmed, as in the open / close display device 20 for the valve.

In the embodiments of the inventions described above, two stoppers each formed on the fixed display member are shown and described, but two stoppers constituting the present invention need not necessarily be formed. Alternatively, one stopper may be formed. Further, these stoppers are formed not only on the fixed display member but also on the lower surface of the first rotary plate portion constituting the rotary display member, while
The fixed display member may be formed by inserting the stopper and forming an opening or a notch for restricting the rotation angle of the rotating display member. Further, in the embodiment of the first invention, the first and second upper side display windows 10b and 10c are used as the upper side display windows and the first and second horizontal side windows are used as the lateral side display windows. Display windows 11a, 11
Although b is illustrated and described, one of the upper side display window or the side display window may be opened.

[0028]

As is apparent from the above description of the embodiments of the present invention, according to the valve opening / closing display device of the first invention, when the stem is rotated by the existing handle, the stem is rotated. When the rotation display member is rotated by the rotation of the rotation display member and the rotation display member is rotated by a predetermined angle, the rotation of the rotation display member is restricted by the stopper, and when the stem is further rotated, only the stem is rotated. Then, by the rotation of the rotary display member, the first upper exposed portion or the second upper exposed portion of the first fixing plate portion forming the fixed display member is selectively opened on the rotary display member. The first lateral side exposed portion or the second lateral side exposed portion of the second fixing plate portion constituting the fixed display member is exposed to the outside via the lateral side display window. The first upper exposed portion and the first lateral exposed portion have the same color, and the second upper exposed portion and the second lateral exposed portion have the same color. In addition, since the color is different from that of the above-mentioned first upper exposed portion, one of these exposed portions is selected by deciding one with a valve closed color and the other with an open color. Exposed to the outside,
Therefore, it is possible to confirm the open / closed state of the valve by confirming at least one of the display windows opened in the rotary display member. In particular, since the lateral display window is formed on the outer peripheral surface of the rotary display member, the open / closed state of the valve can be more surely confirmed even from a distance.
The change in the protruding length of the stem due to the turning operation of the handle is eliminated by the elastic force of the elastic member constantly urging the fixed display member in the direction of the first fixed plate portion forming the rotary display member. ing.

According to the valve opening / closing display device of the second aspect of the invention, the color of the outer surface of the rotary display member is the same as the color of the first upper exposed portion or the second upper exposed portion. Therefore, the state in which a color different from the color of the rotary display member is exposed from the upper display window or the horizontal display window (the state in which the valve is open or closed) is more easily achieved. Can be confirmed.

Further, according to the valve opening / closing display device of the third invention, when the stem is rotated by the existing handle, the movable member engaged with the stem is rotated together,
When the engaging projection formed on the lower surface of the movable member engages with the engaging hole formed on the upper surface of the rotary display member, the rotary display member is rotated together and the rotary display member is rotated by a predetermined angle. Then, the rotation of the rotation display member is restricted by the stopper. Thus, when the rotation of the rotation display member is restricted by the stopper, the engagement between the engagement hole and the engagement protrusion is released, and only the movable member is rotated together with the stem.
Then, due to the rotation of the rotary display member, the colored plate portion constituting the fixed display member is exposed to the outside through the display window formed in the rotary display member. Therefore, even in the case of the valve opening / closing display device according to the third aspect of the present invention, the opening / closing state of the valve can be surely confirmed even from a distance, similarly to the valve opening / closing display device according to the first aspect of the present invention. it can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a valve opening / closing display device according to a first embodiment.

FIG. 2 is a bottom view showing a fixed display member.

FIG. 3 is a cross-sectional view showing a state in which a valve opening / closing display device is attached to a valve body.

FIG. 4 is a perspective view showing a valve opening / closing display device in a state in which the valve is opened.

5 is a perspective view showing a state after the handle is rotated counterclockwise by about 45 degrees from the state shown in FIG. 4;

FIG. 6 is a perspective view showing a state after the handle is rotated counterclockwise by about 90 degrees from the state shown in FIG.

FIG. 7 is an exploded perspective view showing a valve opening / closing display device according to a second embodiment.

FIG. 8 is a bottom view showing a fixed display member.

FIG. 9 is a bottom view showing a movable member.

FIG. 10 is a view showing a state where the valve opening / closing display device is mounted on the valve body, in which the first to third engaging protrusions engage with the first to third engaging holes. It is sectional drawing which shows the state which is not.

FIG. 11 is a view showing a state in which the valve opening / closing display device is mounted on the valve body, and the first to third engaging protrusions are engaged with the first to third engaging holes. It is sectional drawing which shows a state.

[Explanation of symbols]

 1 Valve Opening / Closing Display Device 2 Fixed Display Member 3 Rotation Display Member 4 Coil Spring 5 First Fixed Plate Section 5a Insertion Hole 5b First Colored Section 5c Second Colored Section 5d Third Colored Section 5e Fourth Colored Section 6 Fixed Part 7 Second Fixed Plate Part 7a Fifth Colored Part 7b Sixth Colored Part 7c Seventh Colored Part 7d Eighth Colored Part 8 First Stopper 9 Second Stopper 10 First Rotation Plate Part 10a Press-fitting hole 10b 1st upper side display window 10c 2nd upper side display window 11 2nd rotating plate part 11a 1st horizontal side display window 11b 2nd horizontal side display window 20 Valve opening / closing display device 21 Fixed display member 22 rotation display member 23 movable member 24 coil spring 25 disk-shaped plate portion 25a insertion hole 26 fixed portion 27 fixed plate portion 27a first colored portion 27b second colored portion 27c third colored portion 27d fourth colored portion 28 1st stopper 29 2nd stopper 30 1st rotating plate part 30a insertion hole 30b 1st engaging hole 30c 2nd engaging hole 30d 3rd engaging hole 31 2nd rotating plate part 31a 1st Display window 31b Second display window 33b First engaging convex portion 33c Second engaging convex portion 33d Third engaging convex portion 34c Engaging concave portion S Stem V Valve body N Nut H Handle

Claims (3)

[Claims] 1. A disk-shaped first fixing plate portion having an insertion hole formed at its center for inserting a stem, and a disc-shaped first fixing plate portion hanging from a lower surface of the first fixing plate portion and fixed to a valve body. A fixed display member having a fixing portion into which the nut is inserted and a cylindrical second fixing plate portion hanging down from the outer peripheral edge of the first fixing plate portion, and a press fit into which the stem is press fitted. A disk-shaped first rotating plate portion having holes formed above the first fixed plate portion and having an upper display window opened, and a disk-shaped first rotating plate portion hanging from the outer peripheral edge of the first rotating plate portion. A rotary display member having a second rotary plate portion located on the outer peripheral side of the second fixed plate portion and having a lateral display window opened; and the fixed display member externally fitted to the stem. An elastic member that biases the member toward the first fixed plate portion, and a small number of the fixed display member or the rotary display member. A stopper which is formed on at least one side of the rotary display member and regulates the rotation range of the rotation display member associated with the rotation operation of the stem, and the rotation display member is rotated by half of the rotation range. The first upper exposed portion exposed through the upper display window and the first lateral exposed portion exposed through the horizontal display window have the same color, and the rotary display member is The second upper exposed portion that is exposed through the upper display window and the second lateral exposed portion that is exposed through the horizontal display window when the other half of the moving range is rotated have the same color. An opening / closing display device for a valve, which has a color different from that of the first upper exposed portion. 2. The outer surface of the rotary display member has a color or a second color of the first upper exposed portion and the first lateral exposed portion.
2. The valve open / close display device according to claim 1, wherein the color is the same as that of the upper exposed portion and the second lateral exposed portion of the valve. 3. A disk-shaped first fixing plate portion having a through hole for inserting a stem at the center, and a disc-shaped first fixing plate portion which is hung from a lower surface of the first fixing plate portion and fixed to a valve body. A fixed display member having a fixing portion into which the nut is inserted and a cylindrical second fixing plate portion hanging down from the outer peripheral edge of the first fixing plate portion, and an insertion hole through which the stem is inserted And a disc-shaped first rotating plate portion having an engaging hole formed in the vicinity of the insertion hole, and the second rotating plate portion hanging from the outer peripheral edge of the first rotating plate portion. A rotary display member having a second rotary plate portion located on the outer peripheral side of the fixed plate portion and having a display window opened, and a rotary display member disposed on the rotary display member and having the stem inserted therethrough. The insertion hole and the engaging portion that engages with the handle for rotating the stem are formed. A movable member having an engaging projection that engages with the engaging hole is formed on the lower surface, and an elastic member that is externally fitted to the stem and urges the fixed display member toward the first rotating plate portion. A stopper that is formed on at least one of the fixed display member and the rotary display member and that restricts a rotation range of the rotary display member that accompanies a rotation operation of the stem. Open / close display device.