JPH0440065Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application] The present invention relates to a display device for a rotary valve, and when the rotary valve is opened or closed, the display section changes color over a wide range, so that the open/closed status of the rotary valve can be indicated. This allows for clear judgment even from a distance.

[Prior art and its problems] As an open/close display device for rotary valves, the
There is one disclosed in Publication No. 57-4297, and No. 10
The configuration is as shown in FIGS. 12 to 12.
In this device, when the operation shaft 10 of the rotary valve is rotated, the rotary plate 2 integrated therewith rotates, and the colored portion 21 provided on the rotary plate 2 is attached to the fixed plate 3 on the front side. According to the transparent portion 31, it can be determined that the rotary valve is in the open state. When the operating shaft 10 is reversely rotated from the above state, the colored portion 21 is removed from the transparent portion 31 of the fixed plate 3. In this conventional type, the fixed plate 3
Since the color of the parts other than the transparent part 31 of the rotating plate 2 is matched with that of the opaque part of the rotating plate 2, the fixed plate 3
The entire surface of the rotary valve 1 appears one color, and from this it can be determined that the rotary valve is in the closed state.

However, with this conventional device, there is an inconvenience in that when the transparent portion 31 of the fixed plate 3 is in a hidden position, the open/closed state of the rotary valve cannot be determined from a remote position.

This is because the transparent section 31 serving as a display section located near the operating shaft 10 is only a part of the fixed plate 3.

[Technical Issues] The present invention consists of a fixed plate 3 fixed to the rotary valve body 1 and a rotary plate 2 attached to the operating shaft 10 so as to rotate together with the fixed plate 3. In order to be able to judge the open/close state of a rotary valve from any direction,
The technical problem is to make the entire outer circumference near the operating shaft 10 serve as a display section.

[Technical Means] The technical means of the present invention taken to solve the above-mentioned technical problem is that "the rotating plate 2 and the fixed plate 3 are made into discs that are coaxial with the operating shaft 10 and overlap vertically,
The overlapping portion of each of the rotating plate 2 and the fixed plate 3 is divided into a plurality of equal parts in the circumferential direction, and each area of one of the equally divided rotating plate 2 or the fixed plate 3 is designated as a display section H. At the same time, each area of the other side is defined as a covering part C, and each of the display parts H and the covering part C
The two screws are coupled together, and the angle between the two screws is made to match the rotation angle of the rotary valve, and furthermore, the colors of the display portions H and the colors of the covering portions C and C are made different.

[Function] Next, the function of the above-mentioned technical means of the present invention will be explained. In order to make this explanation easier to understand, first, the rotary plate 2 is provided with the display parts H, H, and the other fixed plate 3 is provided with the display parts H, H. The effect will be explained in the case where the covering parts C and C are provided.

In this case, when the rotary valve body 1 is in the fully closed state,
The display parts H, H are located below the respective covering parts C, C and overlap each other. Therefore, in this state, the colors of the display sections H, H cannot be seen from the outside. Next, when the operation shaft 10 is rotated from this state, since the display part H and the covering part C are screwed together, each display part H, The display parts H protrude from the upper surface of the covering parts C, C, and when the rotary valve is in the fully open position, each display part H,
The display portions H, which are continuously arranged on the circumference, can be seen from the outside. In other words, a concentric annular colored band is formed around the outer periphery of the operating shaft 10. When the operation shaft 10 is rotated in the opposite direction from this state, each display section H, H slips under each covering section C, C due to the operation opposite to the above, and returns to the initial state in which the color band disappears. Return.

The above-mentioned effect is obtained when the display parts H, H are rotated together with the operating shaft 10, but the same effect occurs even if the covering parts C, C are rotated together with the operating shaft 10. Further, in the above-described operation, the state where there is a colored band is the fully open state, and the opposite state is the fully closed state, but it is also possible to set this relationship in the opposite direction.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

When the rotary valve is fully open, the operating shaft 10
A concentric annular colored band is formed around the outer periphery of the valve, and conversely, in the fully closed state, this colored band disappears (or the opposite relationship exists), so the rotary valve It is obvious at a glance whether it is open or closed.

Furthermore, since the band of this color is located all over the outer circumference of the operating shaft 10, the band can be seen from any direction. In other words, it is possible to determine whether the rotary valve is open or closed from any direction.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 9.

In the embodiment shown in FIGS. 1 and 2, a rotating plate 2 made of a thin elastic plate made of metal or synthetic resin is superimposed on the upper surface of a fixed plate 3. A square hole 22 is drilled in the center of the shaft 10, and the square hole 22 is located opposite to the operating shaft 10.Furthermore, four first slits 23, 23, which are open to the outer periphery, are cut radially. Further, a pair of arc-shaped long holes 24, 24 are formed near the outer periphery of the square hole 22,
The area outside the first slits 23, 23 is colored red.

Next, the fixed plate 3 consists of a front plate 32 made of a thin elastic plate and colored white, and a back plate 33. Between the front plate 32 and the back plate 33, there is a rotating plate 2. A gap 34 is formed which is larger than the thickness of . Therefore, as shown in FIG.
The periphery of the surface plate 32 and the periphery of the surface plate 32 are bonded and fixed via a spacer 35, and on the other hand, the center portion on the side of the surface plate 32 is an opening 36, and the outer periphery of the opening 36 is connected to and connected to the opening. Second slits 37, 37 are provided which radially divide the outer circumference into four equal parts. In addition, in the center of the back plate 33, a backing plate 4 is provided.
is installed. This patch plate 4 is a reinforcing plate for attaching the fixed plate 3 to the rotary valve body 1, and when the fixed plate 3 is attached to the rotary valve body 1,
The operating shaft 10 penetrates and protrudes from a central through hole 40 formed in the backing plate 4. For this reason, this patch plate 4
are provided with mounting holes 41, 41, and when the threaded portions of the fixing pins 5, 5 are screwed into the threaded holes 11, 11 provided on the upper surface of the rotary valve body 1, the fixing plate 3
is fixedly attached to the rotary valve body 1.

In the above, the outer circumferential diameter of the rotating plate 2 is the same as that of the fixed plate 3.
The inner diameter of the opening 36 is set smaller than the diameter of the outer end of the second slit 37 formed in the first slit 23, and the inner diameter of the opening 36 is set larger than the diameter of the inner end of the first slit 23. Further, in the case of the embodiment described in detail above, the display section H is between the first slits 23 and 23 of the rotating plate 2, and the display section H is between the second slits 37 and 37.
The covering portion C is between. In order to realize this threaded pairing between the display part H and the covering part C, in this embodiment, one edge of the second slit 37 formed in the surface plate 32 is set in a shape that is curved diagonally upward, and By specifying the relationship between the 1 slit 23, the elongated hole 24, and the stop pins 5, 5, when the rotary valve is in the fully closed state, a part of the display part H on the rotary plate 2 as shown in FIG. (end portion) overlaps and is exposed on the upper surface of the surface plate 32.

The fixing plate 3 is fixed to the rotary valve body 1 as described above, and then the operation shaft 10 of the rotary valve body 1 is brought into the "open" state, and the square hole 22 is fitted into the operation shaft 10. Then, the section surrounded by the first slit 23, that is, the entire display section H is exposed on the upper surface of the fixed plate 3 as shown in FIG. As a result, the entire area of the display section becomes red. From this state, when the operating shaft 10 is rotated 90 degrees in the opposite direction using the handle attached to the operating shaft 10, the display section H of the rotating plate 2 is moved between 34 The display portion H is completely covered by the corresponding covering portion C. In this state, the surface exposed portion is the covering portion C on the fixed plate 3 side.
Almost the entire display area becomes white.

In addition, in the case of the above embodiment, each second slit 37
By bending one end of the display part H and the covering part C upward, a threaded pair of the display part H and the covering part C was realized.
A pair of screws may be realized by shifting the position of 7.

In the case of the second embodiment, the display section H and the covering section C are partially maintained in the screw-to-coupling relationship in either the fully open or fully closed state. There is no need to curve one edge of the second slit 37 upward. Also, the 8th
As in the third embodiment shown in the figure, the first slits 23, 23 are not provided in the rotary plate 2, and the mutually independent display parts H, H may partially overlap at both ends in the circumferential direction. , has the same effect as the above embodiment.

In each of the above embodiments, the rotating plate 2 and the surface plate 32 are made of thin elastic plates to realize a screw pair, but as in the fourth embodiment shown in FIG. A configuration may be adopted in which the arc-shaped flaps 7, 7 are pivotably supported by four radial shafts 25, 25 provided on the moving plate 2. Further, when the opening/closing angle of the rotary valve is 180 degrees, in the second embodiment, the number of the first slits 23 and the second slits 37 are two, respectively, and the number of the fourth slits 37 is two.
In the case of the embodiment, the number of flaps 7 may be two. In this way, by adjusting the number of slits or flaps and adjusting the angles of these sections, a display device similar to the one described above can be constructed depending on the rotation angle of the rotary valve.

Further, as the stop pins 5, 5, the shaft seal box holding bolts provided on the existing rotary valve body 1 may be used as they are. Furthermore, the rotating plate 2 can be reinforced by attaching an opening/closing stopper S for the existing rotating valve to the center of the rotating plate 2, as shown by the imaginary line in FIG.

[Brief explanation of the drawing]

Figure 1 is an assembled perspective view of the first embodiment of the present invention;
The figure is an exploded perspective view, FIG. 3 is a BB sectional view, FIG. 4 is an AA sectional view, FIG. 5 is a sectional view when the operating shaft 10 is rotated 90 degrees from FIG. Figure 6 is the second
7 is a sectional view of the operating shaft rotated 90 degrees from FIG. 6, FIG. 8 is a plan view of the main part of the third embodiment, and FIG. 9 is a sectional view of the fourth embodiment. FIG. 10 is an assembled view of the main parts of the conventional example, FIG. 11 is a single view of the fixed plate of the conventional example, and FIG. 12 is a single view of the rotary plate of the conventional example. Inside, 1... Rotating valve body, 2... Rotating plate, 3... Fixed plate, 10... Operating shaft.

Claims (1)

[Scope of utility model registration request] A fixed plate 3 fixed to the rotary valve body 1 and an operating shaft 1
0 and a rotary plate 2 attached to rotate together with the rotary valve, and the rotary plate 2 displays the open/closed state of the rotary valve by relative rotation between the rotary plate 2 and the fixed plate 3. The fixed plate 3 is a disc that is coaxial with the operation shaft 10 and overlaps with the top and bottom, and the overlapping portion of each of the rotating plate 2 and the fixed plate 3 is divided into a plurality of equal parts in the circumferential direction. Each area on one side of the rotary plate 2 or the fixed plate 3 is used as a display part H, and each area on the other side is used as a covering part C. An opening/closing display device for a rotary valve in which the angle of rotation corresponds to the rotation angle of the rotary valve, and the colors of the display portions H and H are different from the colors of the covering portions C and C.