JPS60263792A - Opening meter for valve key of valve or the like - Google Patents

Abstract

PURPOSE:To simplify the structure by transmitting a turning angle produced when a speed reduction screw is decelerated, which does not make a round, to an indicator. CONSTITUTION:At the time of turning a valve key, a speed reduction screw 4 engaged with a male screw portion 3a of a driving screw 3 through a female screw portion 4a having the same spiral angle starts a spiral motion with the movement of the driving screw 3. A slider 6 projected on one end of the peripheral surface of the speed reduction screw 4 is loosely fitted in an elongated spiral hole 5a of a guide screw-shaped member 5 having a larger spiral angle than the male screw portion 3a of the driving screw 3 in such a manner as to move spirally, so that the spiral motion of the speed reduction screw 4 is decelerated corresponding to the spiral angle ratio of the male screw portion 3a to the elongated spiral hole 5a.

Description

DETAILED DESCRIPTION OF THE INVENTION The industrial field of application of the present invention relates to an opening gauge for a valve opener.

First, the problem to be solved by this invention will be explained.

A conventional opening gauge for a valve opener is configured to drive an opening indicator using a deceleration mechanism that uses a worm, a worm wheel, and gears with different numbers of teeth to mesh with each other. Therefore, both have complicated structures, are difficult to process, and are large in size, resulting in high costs.

This invention was made to solve the above-mentioned problems, and its purpose is to fix a guide spiral body with a long spiral hole in a case with a lid body, and to A drive screw with a male thread with a small helical angle is rotatably arranged inside the spiral body, and a female thread is formed on the inner diameter surface between the drive screw and the guide spiral body to connect the outer circumferential surface. A deceleration screw with a protruding slider is attached so that it can move like a sliding block, and a guide rod with a pointer is inserted loosely into one end of the deceleration screw described in 1-1 and arranged so that it can be moved integrally with the deceleration screw. Since the rotation angle, which is slowed down by the screw and does not make a full rotation, can be transmitted to the above-mentioned pointer, the structure is simplified and processing is easy, and miniaturization is also achieved, resulting in cost reduction and opening of valves, etc. Our objective is to provide a dexterous opening gauge.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, a configuration that is a means to solve the problem will be explained.

As shown in FIGS. 1 and 3, the opening gauge for a cap opener according to the invention 1, invention 6, and 2 has an outer shell composed of a combination of a case 1 and a lid body 2 as shown below.

Case 1 above is formed as follows. The Zunawara case 1 has a flange recess 1 with a predetermined depth and an enlarged diameter at the top.
a is formed all around the circumference, and the recess 1a is formed into a cylindrical body having a bottom from the center zone downward.

A bearing 1b for inserting and supporting a lower small diameter shaft portion 3c of a drive screw 3, which will be described later, is provided in the center of the bottom through a hole.
is fitted. Also, on the bottom of the above-mentioned flange recess 1a is a finger' which will be described later! The pointer receiving convex portion IC for supporting the moving surface on the distal end side of the pointer 19 is slightly higher and protrudes concentrically. Furthermore, screw holes 1d are formed at intervals on the upper surface of the edge of the flange recess 1a, through which bolts 11 can be screwed in from the lid 2 side. Incidentally, screw holes 1e for fixing a flange portion 5b of a guide spiral body 5, which will be described later, are formed at intervals in a concentric arrangement on the bottom peripheral surface of the cylindrical body.

A lid 2 shown below is attached to the case 1. That is, as shown in FIGS. 1 and 3, this lid body 2 is formed into a disc body having the same diameter as the upper outer periphery of the flange recess 1a of the case 1, and has a hole in the center thereof. A bearing 2a for inserting and supporting an upper small-diameter shaft portion 3b of a drive screw 3, which will be described later, is fitted therethrough. Further, on the edge surface near the outer periphery, arc-shaped bolt holes 2d are provided at intervals so as to match the screw holes 1d formed on the edge surface of the flange recess 1a of the case 1. Furthermore, an arcuate hole 2b of a predetermined width is concentrically penetrated through a surface portion of the case 1 that is on the same radial line as the pointer receiver convex IC.
A scale plate 2C made of, for example, transparent resin is integrally fitted to the edge of the hole b. On this scale plate 2C, an opening degree display value 10, which is digitally displayed with the opening degree range of a cap opener (not shown) as a unit scale, is specified. The lid body 2 according to this embodiment is removably attached by inserting and tightening the bolts 11 into the screw holes 1d of the case 1 through each bolt hole 2d.

In the inner center zone of the case 1 and the lid body 2 according to the above, at least one deceleration screw 4 is installed between one drive screw 3 and one guide spiral body 5, shown separately below, concentrically to both. By arranging them so that they can slide and move in a spiral manner, they are configured as a set of deceleration mechanisms.

In other words, the drive screw 3 has a male screw portion 3a forming a helical body with a helical angle (
pitch) is formed small.

A small diameter shaft portion 3b serving as an input shaft extends concentrically above the male screw portion 3a. Further, a small diameter shaft portion 3C serving as an output shaft extends concentrically on the lower side of the male screw portion 3a described in -1-.

Next, the deceleration screw 4 is formed into a nut shape, and has a female threaded portion 4a on its inner diameter surface that has the same helical angle (pitch) as the male threaded portion 3a of the drive screw 3 described above to enable sliding spiral movement. It is formed. In addition, at one end of the outer circumferential surface, there is a slider 6 (which may be in the form of a protrusion) with a slide tube 7 that can be loosely inserted into a spiral elongated hole 5a of a guide spiral body 5 (to be described later) in the radial direction. It is installed protrudingly. In addition, two vertical holes 4b are provided in parallel to the axial direction on the surface portion substantially opposite to the L slider 6, through which a guide rod 8, which will be described later as a support for a pointer 9, can be loosely inserted. has been done.

Furthermore, the kite spiral body 5 is formed into a cylindrical body, and its length is formed to match the height from the inner bottom surface of the case 1 to the upper surface of the pointer receiving convex portion 1c. A spiral elongated hole 5a having a larger helical angle than the male threaded portion 3a of the drive shaft 3 is formed in a part of the circumferential surface, and a flange portion 5b is formed on the outer periphery of the lower end of the cylindrical shape. protruding from the
Attachment holes 5C are provided at intervals on a plurality of locations on this surface portion. (See Fig. 2) As shown in the first part, the drive screw 3 described above is a bearing 2a whose upper small-diameter shaft portion 3b is mounted in the center hole of the lid body 2.
In addition, the small diameter shaft portion 3c on the lower side is loosely inserted through the bearing 1b mounted in the bottom hole of the case 1, and is arranged to be rotatable concentrically. The guide screw body 5 described above is arranged concentrically on the inner bottom surface of the case 1, and the screws 12 are screwed into the screw holes 1e of the case l from the respective mounting holes 5c of the flange portion 5b. It is fixed with a screw. Drive screw 3 and guide spiral body 5 according to this embodiment
In between, the above-mentioned deceleration screw 4 is connected to the male screw portion 3 of the drive screw 3.
It is arranged so that concentric sliding spiral movement is possible by screwing the female threaded portion 4a into the guide screw 5 and loosely inserting the slider 6 into the spiral elongated hole 5a of the guide screw 5 by attaching the slide tube 7. ing. Further, on the -L end of the guide tX-shaped body 5 and on the pointer receiving convex portion 1c of the case 1, two kite rods 8 are mounted on the proximal end G in a right-angled arrangement with screws 13 inserted.
f19 moves both guide rods 3) loosely into each vertical hole 4b of the speed screw 4 shown in 111j when the speed reduction screw 4 moves in a spiral manner, and as a result, the tip of the pointer 9 moves after the movement. The opening degree display value of 10 on the scale plate 2c at the stop +J- position is configured to indicate the opening degree value of a cap opener (not shown).

Due to the above-mentioned assembly, when the driving screw 3 coupled to a cap opener (not shown) is rotated, the male threaded portion 3a undergoes a helical movement due to a small helical angle (small pitch), and the deceleration screw 4 side receives the same helical angle ( When the female threaded portion 4a moves spirally on the axis of the male threaded portion 3a due to the pinch), this deceleration screw 4
The slider 6 protruding from one end of the circumferential surface of the drive screw 3 is configured to slide into the long spiral hole 5a of the guide spiral body 5, which has a larger spiral angle than the male threaded portion 3a of the drive screw 3. Since it is inserted loosely, the integral helical motion exerted on the female threaded portion 4a is reduced, and thereby the speed is reduced by an amount corresponding to the helical angle ratio between the male threaded portion 3a and the spiral elongated hole 5a. It is configured to spiral in a coordinated manner depending on the ratio.

In this case, the helical amount (stroke amount in the axial direction) and helical amount (rotation angle in the circumferential direction) of the deceleration screw 4 are set by the helical angle ratio of the drive screw and the guide spiral body 5, so that both settings are possible. By combining the values, the rotation value of the drive screw 3 on the input side can be obtained from the output side deceleration screw 4 as a deceleration value that does not go around once, so that the helical movement of this deceleration screw 4 and the... The moving pointer 9 is configured to allow setting of the opening degree of a cap opener (not shown).

Next, the action will be explained.

When using a position gauge with the above configuration, drive screw 3
The upper small-diameter shaft portion 3b of the capper is connected to a cap opener (not shown) so that it can move integrally, and the lower small-diameter shaft portion 3C is connected to a valve (not shown) so that the rotation of the cap opener can be transmitted.
When the cap opener is rotated, the deceleration screw 4, which is screwed into the male threaded portion 3a of the drive screw 3 via the female threaded portion 4a having the same helical angle, rotates in a helical manner as the drive screw 3 rotates. I will start exercising. At this time, the slider 6 protruding from one end of the circumferential surface of the deceleration screw 4 is connected to the male screw portion 3 of the drive screw 3.
Spiral elongated hole 5 of guide spiral body 5 with larger helical angle than a
Since the deceleration screw 4 is loosely inserted into the inside of the screw 5 so as to be able to move in a spiral manner, the spiral movement of the deceleration screw 4 is caused by the movement between the male screw portion 3a of the drive screw 3 and the spiral long hole 5a of the kite screw body 5. The output is decelerated by an amount corresponding to the helical angle ratio. Therefore, the deceleration screw 4 and the pointer 9, which is arranged so as to be able to move integrally through the F rod 8, change the angle concentrically in the direction by the same amount as the helical angle of the deceleration screw 4. In order to move
Thereby, the opening degree value of the cap opener (not shown) can be read smoothly, easily and accurately using the opening degree display value IO at the position where the pointer 9 stops after moving.

In addition, since a valve (not shown) is connected to the lower small diameter shaft portion 3C of the drive screw 3 when operating the pointer in the above embodiment, the drive screw 3 rotates at the same angle and in the same direction in a cooperative manner. Therefore, the same amount of valve opening/closing operation as indicated on the opening meter can be smoothly, easily and accurately transmitted to each valve.

In the above embodiment, two vertical holes 4b are provided in the other side of the deceleration screw 4, and the pointer 9 is supported by the two guide rods 8 inserted loosely into the holes 4b. but,
The present invention is not limited to the above-mentioned embodiments, but may include, for example, a square hole (not shown) penetrating through the other side of the deceleration screw 4, and a square rod (not shown) inserted loosely into the square hole. Similarly to the embodiment described above, when the drive screw 3 rotates, the amount of opening of the cap opener is determined by the amount of movement of the pointer 9, which does not make one full cycle integrally with the deceleration screw 4, which rotates under a predetermined amount of deceleration. Numerical values can be displayed smoothly, easily, and accurately.

As explained above, the invention includes a case 1 with a lid 2 that forms the outer shell of a position gauge, and a kite spiral body 5 having a spiral elongated hole 5a formed in a part of the circumferential surface concentrically. In addition, a drive screw 3 formed in an angled portion 3a with a smaller helical angle than the long spiral hole 5a is installed at the inner center of the spiral body 5 as a measure to prevent movement in the axial direction. At the same time, between the front side of the drive screw 3 and the kite spiral body 5, a female thread part 4 having the same helical angle as the one-way part 3a of the drive screw 3 is provided on the inner diameter surface.
A deceleration screw 4 having a slider 6 protruding in the radial direction that can be loosely inserted into the spiral elongated hole 5a of the guide spiral body 5 is attached to one end of the outer circumferential surface of the guide spiral body 5. By assembling the deceleration screw 4 so as to be movable, and by loosely inserting the guide rod 8 of the pointer 9' into one end of the deceleration screw 4 and arranging the deceleration screw 4 so as to be movable together, the deceleration screw 4 can maintain the helical angle ratio. Since it can be transmitted to the pointer 9 as a rotation angle that is decelerated and does not make a complete rotation, the structure of the opener opening gauge is simplified, making it easy to process, as well as achieving miniaturization and reducing costs. It has the effect of reducing

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the opening degree meter for a cap opener according to the present invention, Fig. 2 is a front view of a guide spiral body which is a main part of the opening degree meter, and Fig. 3 is a view showing the opening degree for the same opening degree. FIG. 2 is a partially cross-sectional plan view showing a half-cut portion of the meter. 1... Case 1a... Flange recess 1c...
Pointer receiver convex portion 2... Lid body 2b... Scale plate 3... Drive screw 4... Deceleration screw 4a...
Female thread part 4b... Vertical hole 5... Kite spiral body
5a... Spiral long hole 6... Zuriko 8...
Kite rod 9... Pointer 10... Opening display value Patent applicant Maezawa Kogyo Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A guide spiral body having a spiral elongated hole formed in a part of its circumferential surface is fixed concentrically in a case with a lid, and a guide spiral body with a spiral elongated hole formed at a central position inside the guide spiral body A drive screw formed in a male threaded portion with a small helical angle is arranged so as to be rotatable with a measure to prevent movement in the axial direction, and there is a screw on the inner diameter surface between the drive screw and the guide spiral body that is the same as the male threaded portion of the drive screw. A female threaded portion with a spiral angle is formed, and at one end of the outer circumferential surface, a deceleration screw with a protruding bevel that cannot be loosely inserted into the spiral elongated hole of the guide spiral body can be slid in a concentric manner and can be moved in a spiral manner. 1. An opening degree meter for a valve opener, which is assembled and is characterized in that the deceleration screw is provided with a pointer means.