JP2004212319A - Display for rotational operation part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display for rotational operation part which has a simple structure, and in which the state of a rotational operation part is easily readable. <P>SOLUTION: This display 1 for rotational operation part is constituted of a main body 6 turned along with an operation handle 3, a guide groove 7 formed spirally in the main body 6, a weight body 4 stored under a movable condition inside the guide groove 7, a through-vision cover 8 closing a spiral opening of the guide groove 7 and allowing visual confirmation for the weight body 4, a plate 9 with a window supported rotatably to a shaft 10 of the rotational operation part 3, having the window 13 formed along a vertical direction passed through the shaft, and for covering the main body 6, a scale 14 noted in a window edge part of the plate 9 with the window, and a pair of weights 15. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display for a rotary operation unit for displaying a state of a rotary operation unit such as a valve operation handle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a display for a rotary operation unit, for example, a display in which an open / close direction is indicated by an arrow on an operation surface of an operation handle (for example, see Patent Document 1), or a vernier provided at a base of the rotary operation unit. There was a vernier type indicator.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 62-131180 (page 1, FIG. 4)
[0004]
[Problems to be solved by the invention]
However, the display of the rotation operation unit as described above does not display how much rotation operation has been performed, or even if it is displayed, it is difficult to see from the operator side because it is located behind the operation handle. Met. Therefore, a burden is imposed on the operator in daily inspection work and the like, and there is a possibility that the degree of the rotation operation is erroneously performed.
[0005]
The present invention has been proposed in view of the above problems, and has as its object to provide a display for a rotary operation unit that has a simple structure, allows easy reading of the state of the rotary operation unit, and allows continuous monitoring during operation. Is to do.
[0006]
[Means for Solving the Problems]
The present invention has been proposed to achieve the above-described object, and the invention according to claim 1 includes a main body that rotates together with a rotary operation unit,
A guide groove formed in a spiral shape in the main body;
A weight body movably stored in the guide groove,
A plate with a window that is rotatably supported on the shaft of the rotation operation unit, a window is formed in a vertical direction passing through the shaft, and covers the main body,
A scale marked on the window or the edge of the window of the plate with a window,
Attitude holding means for holding the attitude of the windowed plate so that the scale is located vertically below the axis,
The main body rotates with the rotation operation of the rotary operation part, the weight body moves in the guide groove by its own weight, and the window of the windowed plate is positioned along the vertical direction and the weight body is placed in the window. A rotary operation unit display characterized by displaying the state of the rotary operation unit according to the positional relationship between the weight and the scale.
[0007]
The plate according to claim 2, wherein the plate with a window is formed to have a size to cover the guide groove, and a part of the guide groove can be viewed only through the window. Is a display for the rotary operation unit.
[0008]
The device according to claim 3, wherein the main body rotates together with the rotation operation unit,
A guide passage formed in the main body in a spiral shape and filled with a liquid therein;
A floating indicator body movably stored in the guide channel,
A see-through cover that closes the spiral opening of the guide channel and makes the floating indicator body visible from the outside,
A plate with a window that is rotatably supported on the shaft of the rotation operation unit, a window is formed in a vertical direction passing through the shaft, and covers the main body,
A scale marked on the window or the edge of the window of the plate with a window,
Posture holding means for holding the posture of the plate with a window so that the scale is positioned vertically above the axis,
With the rotation of the rotary operation part, the main body rotates and the floating indicator moves in the guide channel by buoyancy, and the window of the plate with the window is located along the vertical direction, and the floating indicator and the scale A display for displaying the state of the rotary operation unit according to the positional relationship of the rotary operation unit.
[0009]
According to a fourth aspect of the present invention, there is provided the rotary operation unit display according to the third aspect, wherein the floating indicator is a bubble.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a state in which a main body 6 and a window-equipped plate 9 of a rotary operation unit display 1 of the present embodiment are attached to an operation handle 3 (a rotary operation unit in the present embodiment) of an opening / closing valve 2. FIG. 2 is a cross-sectional view thereof. FIG. 3 is a front view showing a state where only the main body 6 is attached to the operation handle 3 of the opening / closing valve 2. FIG. 4 is a front view of the plate 9 with a window.
[0011]
As shown in these drawings, the rotary operation unit indicator 1 of the present embodiment includes a disc-shaped main body 6 having a through hole 5 at the center, a spiral guide groove 7 formed in the main body 6, The weight body 4 rotatably housed in the guide groove 7, the transparent cover 8 for closing the spiral opening of the guide groove 7 so that the weight body 4 can be visually recognized, and the shaft 10 of the operation handle 3. It is rotatably supported and is composed of a plate 9 with a window covering the main body 6 and the like.
[0012]
The main body 6 is a disk-shaped member formed of a suitable material such as metal such as aluminum or plastic, and has a through hole 5 through which the shaft 10 of the operation handle 3 of the on-off valve 2 is inserted. A spiral guide groove 7 is formed around the hole 5 from the starting point (outside groove end) S near the outer peripheral edge to the through hole 5 at the center gradually, and approximately three turns to the end point (inner groove end) F. I have. Note that, in the present embodiment, the spiral guide groove 7 is configured to gradually decrease the curvature when turned counterclockwise from the start point F.
[0013]
In the present embodiment, the weight body 4 accommodated in the guide groove 7 is formed as a sphere so as to be able to roll inside the guide groove 7. In order to promote rolling by its own weight, it is preferable to use a metal ball such as a lead ball or a steel ball for the weight 4. Further, for example, the surface of the sphere is colored with a color different from that of the main body 6 by coating the surface of the sphere with resin or the like, so that it is easy to visually recognize where the weight 4 as the metal sphere is located in the guide groove 7. Is also good.
[0014]
On the surface of the main body 6, there is provided a transparent cover 8 such as a transparent acrylic disk or the like capable of closing the spiral opening of the guide groove 7 and visually recognizing the metal ball 4 as a weight body. The metal ball 4 is prevented from coming off from inside the guide groove 7.
[0015]
The main body 6 is fixed so as to rotate together with the operation handle 3 of the opening / closing valve 2. The main body 6 has a leftward (counterclockwise) spiral guide groove 7 formed therein. Therefore, when the operation handle 3 is rotated rightward (clockwise), which is a closing direction, the metal ball 4 is moved. It moves toward the center of the spiral guide groove 7 (on the side of the through hole 5), that is, toward the inner groove end F of the guide groove 7. On the other hand, when the operation handle 3 is rotated counterclockwise (counterclockwise), which is the opening direction, the metal ball 4 moves from the inner groove end F of the spiral guide groove 7 to the outer groove end S.
[0016]
When the clockwise spiral guide groove 7 is formed in the main body 6, when the operation handle 3 is rotated clockwise (clockwise), which is the closing direction, the metal ball 4 spirals. When the operation handle 3 is rotated leftward (counterclockwise), that is, in the opening direction, the metal ball 4 is moved in the spiral guide groove 7. , That is, toward the inner groove end F.
[0017]
In addition, the number of turns of the spiral guide groove 7 in the present embodiment is substantially three turns from the start point S to the end point F near the outer peripheral edge, but is not limited to this. It is preferable to set appropriately according to the rotation speed of the operation handle 3 determined by the stroke or the like.
[0018]
The window-equipped plate 9 that covers the main body 6 is a disk-shaped member formed of an opaque material such as a metal such as aluminum or plastic, like the main body 6, and is formed in a size that can cover at least the guide groove 7. In addition, a bearing 11 is disposed at the center, and is rotatably supported by the operation handle 3 of the opening / closing valve 2. The plate with window 9 has a spacer 12 sandwiched between the support portion (the inner ring of the bearing 11) and the main body 6 and the see-through cover 8, so that the plate 9 can rotate smoothly without rubbing against the main body 6 and the see-through cover 8. It has become.
[0019]
The window-equipped plate 9 has a vertically long rectangular window 13 formed in the lower half thereof along the radial direction, that is, the vertical direction passing through the center hole, and the window-equipped plate 9 covers the main body 6 and overlaps. With this arrangement, a part of the spiral guide groove 7 and the metal ball 4 housed therein can be viewed only through the window 13. The window 13 may be formed as a hollow opening, or a transparent member such as a transparent acrylic plate may be provided in the opening.
[0020]
The window 13 of the windowed plate 9 has a scale 14 on one side (right side in the figure) of the edge along the radial direction of the guide groove 7. The scale 14 may be any mark as long as the state of the operation handle 3, that is, the amount of rotation can be determined. In the present embodiment, the scale 14 is located at a position where the inner groove end F of the guide groove 7 can be faced (the edge of the window 13). "0%" is written on the upper side of the portion, "100%" is written on the position where the outer groove end S can be faced (below the edge of the window 13), and "50%" is written on the intermediate position. When a transparent member is provided in the opening of the window 13, the scale 14 may be marked on the transparent member, that is, inside the window 13.
[0021]
In the case where the spiral guide groove 7 counterclockwise is formed in the main body 6, “100” is positioned at a position where the inner groove end F of the guide groove 7 can be faced (above the edge of the window 13). "%", "0%" is written at a position where the outer groove end S can face (below the edge of the window 13), and "50%" is written at an intermediate position.
[0022]
The windowed plate 9 serves as a posture holding means for urging the window 13 to a position facing the lowermost part of the guide groove 7, and a pair of weights on both sides of the window 13 near the outer peripheral edge of the windowed plate 9. 15 is buried, and the opened window 13 is always arranged on the lower side along the vertical direction. When such a weight 15 is provided, even if the operation handle 3 is rotated, the window 13 is positioned below the shaft 10 along the vertical direction due to the weight of the weight 15, and the window-equipped plate 9 rolls by its own weight. The weight body 4 can be always visible in the window 13.
[0023]
Although the plate 9 with a window of the present embodiment has a pair of weights 15 as posture holding means, the center of gravity is adjusted to the window 13 so that the weight body in the guide groove 7 is always visible from the window 13. The invention is not limited to this, and the center of gravity of the windowed plate 9 may be in a vertical direction passing through the shaft 10 and lower than the shaft 10. For example, the lower half of the windowed plate 9 may be thicker than the upper half. If the plate 9 with a window is formed in this manner, the center of gravity can be positioned at the center of the left and right sides of the window without assembling separate parts such as the weight 15 and the like, so that the manufacturing cost of the rotary operation unit display 1 can be reduced. Reduction can be achieved.
[0024]
In order to attach the rotary operation unit display 1 having the above configuration to the operation handle 3 of the opening / closing valve 2, as shown in FIG. 2, a shaft 10 protruding from the operation handle 3 is inserted into the through hole 5 of the main body 6. Then, after being inserted into the bearing 11 of the windowed plate 9 via the spacer 12, a nut 16 is screwed into a male screw portion at the tip of the shaft 10 protruding from the windowed plate 9 and fixed to the operation handle 3. . When the operation handle 3 is rotated, the window-equipped plate 9 of the rotary operation unit display 1 maintains the same posture, and only the main body 6 rotates together with the operation handle 3.
[0025]
The open / close valve 2 in the state shown in FIG. 5 is in the fully closed state. In this state, the metal ball 4 stops at the inner groove end F of the guide groove 7 and the operation handle 3 is not turned “0%”. ".
[0026]
When the operation handle 3 is rotated counterclockwise (counterclockwise) in the direction of arrow A in FIG. 5, the main body 6 of the rotary operation unit indicator 1 rotates together with the operation handle 3, and the guide groove 7 also rotates. The metal ball 4 rolls by its own weight in the guide groove 7 and is located at the lowest position in the guide groove 7 at that time. Then, for example, when the operation handle 3 is rotated in the direction of the arrow A until the opening / closing valve 2 is in a half-open state, the metal ball 4 is relatively moved to a position close to “50%” of the scale 14 marked on the edge of the window. To display that the operating handle 3 has an opening of 50%. Similarly, when the operating handle 3 is rotated in the direction of arrow A to the limit of rotation, it indicates "100%" which means that the open / close valve 2 is fully opened.
[0027]
Conversely, when the operation handle 3 is rotated clockwise in the direction of arrow B in FIG. 6, the metal ball 4 moves back in the guide groove 7, and the operation handle 3 Indicates the status.
[0028]
Therefore, when the scale 14 at the edge of the window pointed by the metal ball 4 is read through the window 13 of the windowed plate 9, the amount of rotation of the operation handle 3 can be visually grasped. Can be confirmed. Most of the spiral guide groove 7 is covered by the windowed plate 9 and is visible only through the window 13, so that the metal ball 4 can be immediately found and read without disturbing the amount of rotation. Can be.
[0029]
In the present embodiment, the scale 14 marked on one side edge of the window 13 is represented by the opening degree of the opening / closing valve 2 (0 to 100%). However, the invention is not limited to this. It may be represented by a number or an opening / closing angle.
[0030]
The weight body may be of any material and shape as long as it moves in the guide groove 7 by its own weight. For example, instead of the metal ball 4, a mineral or metal piece (not shown) may be used as a weight to slide in the guide groove 7.
[0031]
In general, the shaft 10 of the on-off valve 2 projects in a direction perpendicular to the direction of the pipe 17, that is, in a horizontal direction, and therefore, regardless of whether the pipe direction is vertical or horizontal, FIG. Can be used in the state shown in FIG. However, when there are adjacent pipes in the horizontal direction, as shown in FIG. 7, when the shaft 10 is tilted obliquely upward, the rotation surface of the rotary operation handle 3 is tilted. The weight body such as can move in the guide groove 7 by its own weight, and the window 13 is also positioned below the windowed plate 9 by the weight 15. Therefore, even when there is a pipe adjacent in the horizontal direction, the open / close state of the open / close valve 2 can be displayed only by fixing the rotary operation unit display 1 according to the present invention to the operation handle 3.
[0032]
In the above-described embodiment, the opening of the on-off valve 2 is indicated by the weight 4 moving in the guide groove 7 by its own weight, but the present invention is not limited to this. For example, as shown in FIG. 8 and FIG. 9, a display that displays the opening degree by a floating index body may be used.
[0033]
The display 21 for a rotary operation unit according to the second embodiment shown in FIGS. 8 and 9 utilizes the buoyancy of a liquid, and includes a disc-shaped main body 24 having a through-hole 23 in a central portion, and a main body 24. A spiral-shaped guide channel 25, a liquid such as water or alcohol filled in the guide channel 25, and a bubble 26 serving as a floating indicator stored movably in the guide channel 25. A transparent cover 28 that closes the spiral opening of the guide channel 25 so that the floating indicator can be viewed from the outside; a plate 29 with a window that is rotatably supported by the shaft 10 of the operation handle 3 and covers the main body 24. It is composed of
[0034]
The main body 24 is a disk-shaped member made of a suitable material such as metal such as aluminum or plastic, and is formed around a through hole 23 through which the shaft 10 of the operation handle 3 passes. A spiral groove is formed that gradually approaches the center through-hole 23 from the nearby start point (outer flow path end) S ′ to the end point (inner flow path end) F ′, and a spiral opening of this groove is formed. Is closed in a liquid-tight manner with a see-through cover 28 to form a spiral guide channel 25 (see FIG. 10). In addition, between the main body 24 and the see-through cover 28, a sealing material (not shown) is used to seal the liquid filled in the guide channel 25 so as not to leak.
[0035]
The main body 24 is fixed to the operation handle 3 of the opening / closing valve 2 so as to rotate together with the operation handle 3. Since a counterclockwise spiral guide flow path 25 is formed in the main body 24, when the operation handle 3 is rotated clockwise (clockwise), which is a closing direction, the bubbles 26 are generated. It moves toward the center of the spiral guide flow channel 25 (through hole 23 side), that is, toward the inner flow channel end F '. On the other hand, when the operation handle 3 is rotated leftward (counterclockwise) as the opening direction, the bubbles 26 move from the inner flow path end F 'to the outer flow path end S'.
[0036]
When a clockwise (clockwise) spiral guide flow path 25 is formed in the main body 24, when the operation handle 3 is rotated clockwise (clockwise), which is a closing direction, the bubbles 26 move to the outside. When the operation handle 3 is rotated leftward (counterclockwise), which is the opening direction, the bubble 26 moves toward the inner flow path end F ′. Will be.
[0037]
The bubble 26 functions as an index for indicating the scale 34 of the window-equipped plate 29, which will be described later, and thus has a size that can be easily recognized. However, if it is too large, it becomes unclear which scale 34 is pointing. It is desirable that the width is about the width of the flow path 25. The bubbles 26 are not limited to air, but may be gas bubbles of any composition as long as they are insoluble in liquid. For example, bubbles of nitrogen gas may be used. Further, instead of the bubbles 26, a sphere, a coma, or the like having a lower specific gravity than the liquid filled in the guide channel 25 may be used as the floating indicator.
[0038]
The window-equipped plate 29 has basically the same configuration as the window-equipped plate 9 of the above embodiment, but differs in the position of the window. More specifically, the window-equipped plate 29 of the second embodiment has a rectangular window 33 formed in the upper half along the radial direction, that is, the vertical direction passing through the center hole. When the cover 9 is arranged so as to cover the main body 24, a part of the spiral guide groove 7 and the air bubbles floating inside the guide groove 7 can be viewed from the window 33.
[0039]
The window 33 of the second embodiment also has a scale 34 on the edge on one side (the right side in the figure) along the radial direction of the spiral guide channel 25, similarly to the window 13 of the first embodiment. are doing. The scale 34 may be any mark as long as the state of the operation handle 3, that is, the amount of rotation can be determined. In the present embodiment, the scale 34 can face the inner flow path end F ′ of the guide flow path 25. "0%" on the lower side of the edge of the window 33, "100%" on a position (upper side of the edge of the window 33) where the outer groove end S 'can face, and "50%" on an intermediate position. It is written. Also, regarding the window 33, a transparent member may be arranged in the opening, and the scale 34 may be marked inside the transparent member, that is, the window 33.
[0040]
When a counterclockwise spiral guide flow path 25 is formed in the main body 24, “100%” is set at a position (upper edge of the window 13) where the inner groove end F ′ can face. However, "0%" is written at a position where the outer groove end S 'can be faced (below the edge of the window 13), and "50%" is written at an intermediate position.
[0041]
The window-attached plate 29 embeds a weight 35 in the vicinity of the outer peripheral edge on the opposite side to the window 33 as posture holding means for urging the window 33 to a position facing the uppermost portion of the guide channel 25. I have. When such a weight 35 is provided, even if the operation handle 3 is rotated, the window 33 is positioned vertically above the axis 10 along the vertical direction due to the weight of the weight 35 even when the operation handle 3 is rotated, so that the buoyancy of the liquid is increased. As a result, the moving air bubbles 26 can always be made to be visible in the window 33 so as to be visible.
[0042]
In this embodiment, the weight 35 for positioning the window 33 above the axis 10 along the vertical direction is embedded in the windowed plate 29. However, the posture holding means is not limited to this, and the center of gravity of the windowed plate 29 is not limited to this. May be a vertical direction passing through the shaft 10 and lower than the shaft 10. For example, the lower half of the windowed plate 29 may be thicker than the upper half. When the plate 29 with a window is formed in this manner, the center of gravity can be positioned at the center of the left and right widths of the window without embedding the weight 35, thereby reducing the manufacturing cost of the display 21 for the rotary operation unit. Can be. Further, the window 33 may be formed as a hollow opening, or a transparent member having a density lower than the material forming the window plate 29 may be provided in the opening.
[0043]
In order to attach the rotary operation unit display 21 having the above configuration to the operation handle 3 of the opening / closing valve 2, as shown in FIG. 9, the shaft 10 protruding from the operation handle 3 is inserted into the through hole 23 of the main body 24. Then, after passing through the bearing 11 of the windowed plate 29 via the spacer 12, the nut 16 is screwed into the male screw portion at the tip of the shaft 10 protruding from the windowed plate 29 and fixed to the operation handle 3. . Thus, when the operation handle 3 is rotated, only the main body 24 rotates together with the operation handle 3 while the window-equipped plate 29 of the rotary operation unit display 1 maintains the same posture.
[0044]
The open / close valve 2 in the state shown in FIG. 8 is in the fully opened state. In this state, the air bubble 26 stops at the outer flow path end S ′ of the guide flow path 25 and the operation handle 3 is fully turned “100”. % ".
[0045]
When the operation handle 3 is rotated clockwise in the direction of arrow C in FIG. 8, the main body 24 of the rotary operation unit display 1 rotates together with the operation handle 3, whereby the guide channel 25 also rotates. The bubbles 26 move while floating at the highest position in the guide channel 25. Then, for example, when the operation handle 3 is rotated in the direction of the arrow C until the opening / closing valve 2 is half-opened, the air bubbles 26 move relative to a position close to “50%” of the scale 34 marked on the edge of the window 33. The operation handle 3 is displayed to indicate that the opening degree of the operation handle 3 is 50%. Similarly, when the operation handle 3 is rotated in the direction indicated by the arrow C to the maximum rotatable limit, “0%” indicating that the on-off valve 2 is fully closed is indicated.
[0046]
Conversely, when the operation handle 3 is rotated counterclockwise (counterclockwise) in the direction of arrow D in FIG. 8, the bubble 26 moves back in the guide flow path 25, and the operation handle 3 at that time is moved in the same manner as described above. Indicates the state of.
[0047]
Therefore, by reading the scale 34 of the window edge pointed to by the air bubble 26 through the window 33 of the windowed plate 29, the amount of rotation of the operation handle 3 can be visually grasped, whereby the open / close state of the open / close valve 2 can be determined. You can check.
[0048]
In the present embodiment, the scale 34 marked on one side edge of the window 33 is represented by the opening degree of the opening / closing valve 2 (0 to 100%). However, the present invention is not limited to this. It may be represented by a number or an opening / closing angle.
[0049]
In each of the above-described embodiments, the rotary operation unit indicators 1 and 21 are attached to the rotary operation unit, and the shaft 10 protruding from the rotary operation handle 3 is passed through the through holes 5 and 23 and fixed with the nut 12. However, the present invention is not limited to this, and the main bodies 6 and 24 may be fixed using other known fixing means such as screwing to the operation handle 3. Further, the rotary operation unit displays 1 and 21 may be integrated with the rotary operation unit.
[0050]
Further, in the above embodiment, the display for displaying the opening degree of the operation handle 3 of the on-off valve 2 has been described. However, the display for the rotary operation unit in the present invention is not limited to this. Any purpose can be used as long as it is a rotary operation unit. For example, it may be attached to an opening / closing operation handle of a water gate.
[0051]
【The invention's effect】
As described above, according to the present invention, the display can be easily read because the rotary operation unit can be attached to the operator side. Further, by providing the window, it is easy for the operator to confirm the location of the display to be seen, and it is easy to continuously monitor even while operating the rotary operation unit. Therefore, work can be facilitated in daily inspection work and the like, and since the configuration is simple, it can be manufactured at low cost.
[0052]
Further, when the rotary operation unit indicator according to the present invention is used by being attached to an operation handle of an opening / closing valve, for example, the opening degree of the opening / closing valve can be clearly displayed in accordance with the rotation amount of the operation handle. Regardless of the pitch of the valve opening / closing screw, the minute opening can be displayed accurately and continuously, and the opening can be easily read. When the opening degree of the opening / closing valve is instructed in the instruction manual, operation errors can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing a state in which a main body and a plate with a window of a display for a rotary operation unit according to a first embodiment are attached to an operation handle of an opening / closing valve.
FIG. 2 is a cross-sectional view showing a state in which a main body and a window-equipped plate of the rotary operation unit display device of the first embodiment are attached to an operation handle of an opening / closing valve.
FIG. 3 is a front view showing a state where the main body of the rotary operation unit display unit of the first embodiment is attached to an operation handle of an opening / closing valve.
FIG. 4 is a front view showing a plate with a window disposed on a main body of the display for a rotary operation unit according to the first embodiment.
FIG. 5 is a front view of the case where the display for a rotary operation unit according to the first embodiment shows a closed state of an on-off valve.
FIG. 6 is a front view of the rotary operation unit indicator according to the first embodiment when the on-off valve is fully opened;
FIG. 7 is a side view showing a state where the on-off valve and the display for the rotary operation unit of the first embodiment are mounted when there is a pipe adjacent to the pipe in the horizontal direction.
FIG. 8 is a front view showing a state in which a main body and a window-equipped plate of a rotary operation unit display device according to a second embodiment are attached to an operation handle of an opening / closing valve.
FIG. 9 is a cross-sectional view illustrating a state in which a main body and a window-equipped plate of the rotary operation unit indicator according to the second embodiment are attached to an operation handle of an opening / closing valve.
FIG. 10 is a front view showing a state in which the main body of the rotary operation unit indicator according to the second embodiment is attached to an operation handle of an opening / closing valve.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Display for rotation operation part 2 Opening / closing valve 3 Operation handle 4 Metal ball (weight body)
5 Through-hole 6 Body 7 Guide groove 8 Transparent cover 9 Windowed plate 10 Shaft 11 Bearing 12 Spacer 13 Window 14 Scale 15 Weight 16 Nut 17 Pipe 21 Rotating operation indicator 23 Through-hole 24 Main body 25 Guide flow path 26 Bubbles 28 Perspective cover 29 Plate with window 33 Window 34 Scale 35 Weight

Claims (4)

A main body that rotates together with the rotary operation unit,
A guide groove formed in a spiral shape in the main body;
A weight body movably stored in the guide groove,
A plate with a window that is rotatably supported on the shaft of the rotation operation unit, a window is formed in a vertical direction passing through the shaft, and covers the main body,
A scale marked on the window or the edge of the window of the plate with a window,
Attitude holding means for holding the attitude of the windowed plate so that the scale is located vertically below the axis,
The main body rotates with the rotation operation of the rotary operation part, the weight body moves in the guide groove by its own weight, and the window of the windowed plate is positioned along the vertical direction and the weight body is placed in the window. A display for a rotary operation unit, wherein the state of the rotary operation unit is displayed according to the positional relationship between the weight and the scale. 2. The display according to claim 1, wherein the plate with a window is formed in a size that covers the guide groove, and a part of the guide groove is visible only through the inside of the window. 3. A main body that rotates together with the rotary operation unit,
A guide passage formed in the main body in a spiral shape and filled with a liquid therein;
A floating indicator body movably stored in the guide channel,
A see-through cover that closes the spiral opening of the guide channel and makes the floating indicator body visible from the outside,
A plate with a window that is rotatably supported on the shaft of the rotation operation unit, a window is formed in a vertical direction passing through the shaft, and covers the main body,
A scale marked on the window or the edge of the window of the plate with a window,
Posture holding means for holding the posture of the plate with a window so that the scale is positioned vertically above the axis,
With the rotation of the rotary operation part, the main body rotates and the floating indicator moves in the guide channel by buoyancy, and the window of the plate with the window is located along the vertical direction, and the floating indicator and the scale A display for a rotary operation unit, wherein the state of the rotary operation unit is displayed according to the positional relationship of: 4. The display according to claim 3, wherein the floating indicator is a bubble.

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