JP2012246964A - On-off valve with aperture indication function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-off valve, in which an opening and closing state of the valve is visible on a side face thereof in various directions.SOLUTION: The on-off valve 20 with an aperture indication function includes a handle 100 and an aperture indication mechanism 102. The aperture indication mechanism 102 is housed inside the handle 100. The handle 100 has a plurality of observation windows 130. The aperture indication mechanism 102 includes an aperture indication member 120 and a drive gear unit 122. The aperture indication member 120 is disposed between a valve rod 28 and the observation windows 130. The aperture indication member 120 rotates around the valve rod 28. The aperture indication member 120 displays information visible from the outside of the observation windows 130. The drive gear unit 122 drives the aperture indication member 120 so that a rotational speed becomes lower than that of the handle 100.

Description

  The present invention relates to an opening / closing valve with an opening degree display function, and more particularly, to an opening / closing valve with an opening degree display function capable of performing the opening / closing state from various directions when visually confirming the opening / closing state.

  Patent Document 1 discloses an on-off valve with an opening degree display function. In this on-off valve with an opening indication function, the valve stem is connected to a cup-shaped handle. A viewing window is provided on at least the handle fillet of the cup-shaped handle. The display cylinder is inserted coaxially with the cup-shaped handle in the inner space of the cup-shaped handle. The display cylinder is attached to the valve box in a state where rotation around the axis is prevented. An inclined surface is provided at an outer end portion in the axial direction of the display cylinder. A display tool is provided on the inclined surface. The indicator displays the open / closed state of the closing member.

  According to the open / close valve with an opening degree display function disclosed in Patent Document 1, the open / close state is changed from a position directly above (in this case, the axial direction of the valve stem) to a side surface (in this case, a direction orthogonal to the axis of the valve stem). ) Easily visible.

JP-A-7-280134

  However, the open / close valve with an opening degree display function disclosed in Patent Document 1 has a problem that when the open / close state is visually recognized from the side, the open / close state cannot be visually recognized unless the direction is limited.

  The present invention has been made to solve such a problem, and the object of the present invention is to provide an opening degree display function capable of performing the opening / closing state from various directions when visually confirming the opening / closing state. The object is to provide an on-off valve.

  The opening device of the present invention will be described with reference to the drawings. Note that the use of the reference numerals in the figure in this column is intended to assist understanding of the contents of the invention, and is not intended to limit the contents to the illustrated range.

  In order to solve the above-described problem, according to an aspect of the present invention, the opening / closing valves 20, 90, 92, 94 with an opening display function include handles 100, 300, 400, 500 for rotating the valve stem 28, Opening display mechanisms 102, 302, 402, 502 are provided. The opening indication mechanisms 102, 302, 402, 502 are housed inside the handles 100, 300, 400, 500. The handles 100, 300, 400, 500 have the driving-side internal gears 112 b, 312 b, 412 b and a plurality of viewing windows 130, 330, 430. The plurality of viewing windows 130, 330, and 430 are disposed so as to surround the valve stem 28. The opening display mechanisms 102, 302, 402, 502 have opening display members 120, 320, 420, 520, and drive gear portions 122, 322, 422, 522. The opening degree display members 120, 320, 420, and 520 are disposed between the valve rod 28 and the viewing windows 130, 330, and 430. The opening display members 120, 320, 420, and 520 have driven internal gears 120c, 320c, 420c, and 520c. The opening display members 120, 320, 420, and 520 rotate around the valve rod 28. On the opening display members 120, 320, 420, and 520, information that can be viewed from outside the viewing windows 130, 330, and 430 is displayed. The drive gear portions 122, 322, 422, and 522 receive torque from the driving-side internal gears 112b, 312b, and 412b of the handles 100, 300, 400, and 500, and are located on the driven side of the opening indication members 120, 320, 420, and 520. By applying torque to the gears 120c, 320c, 420c, and 520c, the opening degree display members 120, 320, 420, and 520 are driven so that the rotational speed is lower than that of the handles 100, 300, 400, and 500.

  The drive gears 122, 322, 422, 522 receive torque from the driving-side internal gears 112 b, 312 b, 412 b of the handles 100, 300, 400, 500, and follow the insides of the opening indication members 120, 320, 420, 520. Torque is applied to the gears 120c, 320c, 420c, and 520c. By receiving torque from the internal gear and applying torque to another internal gear, the difference between the rotational speed of the opening degree display members 120, 320, 420, and 520 and the rotational speed of the handles 100, 300, 400, and 500 is suppressed. Can do. Since the difference can be suppressed, when the handles 100, 300, 400, 500 are rotated, the information that can be visually recognized from the plurality of viewing windows 130, 330, 430 is the rotation of the handles 100, 300, 400, 500. It changes little by little. Since the information visible from each of the plurality of observation windows 130, 330, and 430 changes little by little, the plurality of observation windows 130, 330, and 430 are provided on the handles 100, 300, 400, and 500, and the information can be visually recognized from each of them. It can be. Since information can be visually recognized from each of the plurality of viewing windows 130, 330, and 430, when viewing the open / closed state from the side, it can be performed from various directions.

  Further, the number of teeth of the driven side internal gears 120c and 320c of the opening degree display member described above is smaller than the number of teeth of the driving side internal gears 112b and 312b of the handle, and the drive gear unit has the external gears 122 and 322. desirable. In this case, the external gears 122 and 322 mesh with the driving side internal gears 112b and 312b and the driven side internal gears 120c and 320c.

  The number of teeth of the driven side internal gears 120c, 320c is less than the number of teeth of the driven side internal gears 112b, 312b, and one external gear 122, 322 is called the driven side internal gears 112b, 312b and the driven side internal gears 120c, 320c. When meshing with two types of gears, the difference between the number of teeth of the driven side internal gears 120c and 320c and the number of teeth of the driven side internal gears 112b and 312b is considerably reduced. Since the difference between the number of teeth of the driven-side internal gears 120c and 320c and the number of teeth of the driving-side internal gears 112b and 312b is considerably small, the rotational speed of the opening degree display members 120 and 320 and the handles 100 and 300 are not compared to the other cases. The difference with the rotational speed of the can be reduced. Thereby, even if many viewing windows 130 and 330 are provided, information can be visually recognized from each of them. As a result, the open / closed state can be visually recognized from various directions.

  Further, it is desirable that the above-described drive gear portion 422 has an outer cylinder engaging portion 450 and a display member engaging portion 452. The outer cylinder meshing portion 450 meshes with the driving side internal gear 412 b of the handle 400. The display member engagement portion 452 is provided coaxially with the outer cylinder engagement portion 450. The display member engagement portion 452 moves in synchronization with the outer cylinder engagement portion 450. The display member meshing portion 452 meshes with the driven side internal gear 420 c of the opening degree display member 420. In this case, the number of teeth of the portion of the display member meshing portion 452 that meshes with the driven side internal gear 420c is smaller than the number of teeth of the portion of the outer cylinder meshing portion 450 that meshes with the driving side internal gear 412b.

  Moreover, it is desirable that the handle 400 described above has a fixing portion 416 and a connecting tube portion 410. The fixed portion 416 is attached to the valve stem 28. The fixed portion 416 and the valve stem 28 penetrate the connecting tube portion 410. The fixing portion 416 has a fixing side uneven portion 416a. The fixed-side uneven portion 416 a extends along the rotation axis of the valve stem 28. The connection cylinder part 410 has the connection side uneven | corrugated | grooved part 410a. The connection side uneven part 410a meshes with the fixed side uneven part 416a.

  When the fixed portion 416 and the valve stem 28 penetrate the connecting tube portion 410 and the connection-side uneven portion 410a meshes with the fixed-side uneven portion 416a, when the handle 400 is rotated, the valve rod 28 also rotates. Can be attached to and detached from the valve stem 28. In addition, since the connection-side uneven portion 410a meshes with the fixed-side uneven portion 416a, the direction of the viewing window can be adjusted.

  Moreover, it is desirable that the opening degree display mechanisms 102, 302, 402, 502 described above further include holding members 124, 324, 424, 524. The holding members 124, 324, 424, and 524 hold the opening degree display members 120, 320, 420, and 520 in a rotatable manner, and hold the drive gear portions 122, 322, 422, and 522.

  Alternatively, it is desirable that the holding members 124 and 324 described above include the contact portions 140 and 340 and the gear holding portions 142 and 342. The contact parts 140 and 340 hold the opening degree display members 120 and 320 rotatably by contacting the opening degree display members 120 and 320. The gear holding parts 142 and 342 hold the drive gear parts 122 and 322.

  As described above, according to the on-off valve with an opening degree display function according to the present invention, the open / closed state can be visually recognized in a wide range.

It is a longitudinal cross-sectional view of the on-off valve with an opening degree display function concerning 1st Embodiment of this invention. It is a top view of the on-off valve with an opening degree display function concerning a 1st embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a longitudinal cross-sectional view of the on-off valve with an opening degree display function concerning 2nd Embodiment of this invention. It is a top view of the on-off valve with an opening degree display function concerning a 2nd embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a longitudinal cross-sectional view of the on-off valve with an opening degree display function concerning 3rd Embodiment of this invention. It is a top view of the on-off valve with an opening degree display function in the state where the handle nut and the push-up spring according to the third embodiment of the present invention are removed. It is an enlarged view of FIG. It is a longitudinal cross-sectional view of the on-off valve with an opening degree display function concerning 4th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention. The entire structure of the on-off valve 20 with an opening degree display function, which is the on-off valve according to this embodiment, will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view of an on-off valve 20 with an opening indication function. FIG. 2 is a plan view of the on-off valve 20 with an opening degree display function. 3 is a cross-sectional view taken along the line AA in FIG. 4 is a cross-sectional view taken along the line BB of FIG. 5 is a cross-sectional view taken along the line CC of FIG.

  A gas cylinder (not shown) can be filled with about 15 MPa of nitrogen gas. The opening / closing valve with opening degree display function 20 according to the present embodiment is attached to the neck of the gas cylinder (the opening / closing valve with opening degree display function according to the present invention is replaced with a gas cylinder for filling with nitrogen gas, argon gas or other Needless to say, it can be attached to a gas cylinder for filling gas).

  As shown in FIG. 1, the opening / closing valve 20 with an opening degree display function includes a valve box 22. A leg screw portion 220 formed in the valve box 22 is fixed to the neck portion of the gas cylinder with screws. An outlet nozzle 222 projects laterally from the middle of the valve box 22. The gas inlet 224 opened on the lower surface of the leg screw portion 220 opened on the end face of the outlet nozzle 222 through the inlet passage 226, the cylindrical hole of the closing valve seat 228, the closing valve chamber 230, and the outlet passage 232 in this order. It leads to the gas outlet 234. A safety valve 38 is provided in the outlet passage 238 branched from the middle portion of the inlet passage 226. The closing member 24 is accommodated in the closing valve chamber 230. A male screw is provided on the outer peripheral portion of the closing member 24. A female screw is provided on the inner wall of the shut-off valve chamber 230. Since the male screw and the female screw are fitted, the closing member 24 can freely move up and down in the closing valve chamber 230. Therefore, the synthetic resin valve body 240 fitted in the closing member 24 can be in contact with or away from the closing valve seat 228.

  A screw hole 236 is formed in the valve box 22 in the upper part of the closing valve chamber 230. The valve lid 26 is screwed into the screw hole 236. The valve stem 28 passes through the hole of the valve lid 26. The inner peripheral surface of the hole of the valve lid 26 and the outer peripheral surface of the valve stem 28 are sealed by two O-rings 30. Thereby, the valve stem 28 can rotate clockwise or counterclockwise with respect to the valve lid 26. The lower part of the valve stem 28 is connected to the closing member 24. A cup-type handle 100 is provided on the upper portion of the valve stem 28. An operator applies torque to the cup-type handle 100 by holding the outer cylinder 112 with a finger. As a result, when the cup handle 100 rotates, the valve stem 28 also rotates. When the valve stem 28 rotates, the closing member 24 also rotates.

  The cup-type handle 100 includes an inner cylinder 110, an outer cylinder 112, a top wall 114 that connects them, and a fixing portion 116 that is fixed to the valve stem 28. The inner cylinder 110, the outer cylinder 112, the top wall 114, and the fixing portion 116 are integrally formed of an opaque synthetic resin. A handle nut 34 and a push-up spring 36 are provided in the inner cylinder 110 of the cup-type handle 100. The valve rod 28 is pushed up by the elastic force of the push-up spring 36. As shown in FIG. 2, five viewing windows 130 are provided in a portion from the outer cylinder 112 to the top wall 114 in the cup-type handle 100. As shown in FIGS. 3 and 5, a driving-side internal gear 112 b is formed on the inner peripheral surface of the outer cylinder 112.

  As shown in FIG. 1, an opening degree display mechanism 102 is accommodated inside the cup-type handle 100. The opening display mechanism 102 includes an opening display member 120, an external gear 122 (which is a drive gear portion in the present embodiment), and a holding member 124.

  The opening degree display member 120 is disposed between the inner cylinder 110 and the outer cylinder 112, that is, between the valve rod 28 and the viewing window 130. As will be apparent from the following description, the opening degree display member 120 rotates around the valve stem 28. As shown in FIG. 1, the opening degree display member 120 has a cylindrical portion 120a and a slope portion 120b. The cylindrical portion 120a is disposed so as to surround the valve stem 28. The slope portion 120b is provided at one end of the cylindrical portion 120a so as to cover the external gear 122. Although not shown, the cylindrical portion 120a and the slope portion 120b are painted in red and blue. These colors are visible from outside the viewing window 130. These colors are information indicating the degree of opening (opening degree) of the valve element 240 with respect to the closing valve seat 228 since it is visible from the outside of the viewing window 130. As shown in FIGS. 4 and 5, the opening degree display member 120 further includes a driven side internal gear 120c. The driven side internal gear 120c is provided on the inner periphery of the cylindrical portion 120a. The number of teeth of the driven side internal gear 120 c is smaller than the number of teeth of the driven side internal gear 112 b of the cup-type handle 100. In the case of this embodiment, the number of teeth of the driven side internal gear 120c of the opening degree display member 120 is “45”. The number of teeth of the driving-side internal gear 112b of the cup-type handle 100 is “48”.

  As shown in FIG. 3, the external gear 122 meshes with the driving-side internal gear 112 b of the outer cylinder 112. As shown in FIG. 4, the external gear 122 meshes with the driven-side internal gear 120 c of the opening degree display member 120. As a result, the external gear 122 receives torque from the driving side internal gear 112b and applies torque to the driven side internal gear 120c. By applying torque, the external gear 122 drives the opening degree display member 120 so that the rotational speed is lower than that of the cup-type handle 100. As a result, the opening degree display member 120 rotates around the valve rod 28 as described above. The rotational speed of the opening degree display member 120 is lower than that of the cup type handle 100 because the number of teeth of the driven side internal gear 120c of the opening degree display member 120 is smaller than the number of teeth of the driving side internal gear 112b of the cup type handle 100. Because. Incidentally, the number of teeth of the external gear 122 is “8”.

  The holding member 124 (see FIGS. 1 and 5) is firmly fitted to the hexagonal head 260 of the valve lid 26 so as not to move. The holding member 124 includes a contact portion 140 (see FIGS. 3, 4, and 5) and a gear holding portion 142 (see FIG. 1). As shown in FIGS. 4 and 5, the contact portion 140 contacts the driven side internal gear 120 c of the opening display member 120 to hold the opening display member 120 rotatably. The shaft of the external gear 122 is rotatably fitted to the gear holding portion 142.

  Next, the operation of the opening / closing valve 20 with an opening degree display function according to the present embodiment will be described. In FIG. 2, when the cup-type handle 100 is rotated in the clockwise direction, the valve stem 28 is rotated. When the valve rod 28 rotates, the closing member 24 also rotates. At this time, the closing member 24 is lowered. When the closing member 24 is sufficiently lowered, the valve body 240 provided at the lower portion of the closing member 24 comes into contact with the closing valve seat 228, and the valve body 240 closes the closing valve seat 228. In the case of this embodiment, in this valve-closed state, it is possible to look into the blue-painted portion of the surface of the opening display member 120 from the viewing window 130 of the cup-type handle 100.

  Next, in FIG. 2, when the cup-type handle 100 is rotated in the counterclockwise direction, the valve stem 28 rotates. When the valve rod 28 rotates, the closing member 24 also rotates. At this time, the closing member 24 rises. The valve body 240 of the closing member 24 moves away from the closing valve seat 228.

  At this time, since the cup-type handle 100 rotates, the driving-side internal gear 112b on the inner peripheral surface of the outer cylinder 112 also rotates. Since the driving-side internal gear 112b rotates, the external gear 122 meshing with it also rotates. Since the external gear 122 rotates, the driven side internal gear 120c of the opening degree display member 120 that meshes with the external gear 122 also rotates. Since the driven-side internal gear 120 c rotates, the opening degree display member 120 rotates around the valve rod 28. The direction of rotation is the cup-type handle 100, that is, counterclockwise. However, as described above, the rotation speed of the opening degree display member 120 is lower than that of the cup-type handle 100. As a result, the region of the opening degree display member 120 that can be viewed from the viewing window 130 is sequentially changed. In the case of the present embodiment, when the above-described valve body 240 is sufficiently separated from the closing valve seat 228 (valve open state), the red painted portion of the surface of the opening display member 120 from the viewing window 130 of the cup-type handle 100 is removed. It is possible to peek.

  As described above, the opening / closing valve 20 with the opening degree display function according to the present embodiment can be viewed from various directions when the opening / closing state is visually confirmed from the side surface, that is, the direction orthogonal to the rotation axis of the valve rod 28. It is. This is possible for the following reasons. First, five observation windows 130 arranged at equal intervals are provided. Next, the rotational speed of the opening degree display member 120 is slightly lower than the rotational speed of the cup-type handle 100. In other words, when the cup handle 100 is rotated, the relative speed of the opening display member 120 with respect to the cup handle 100 is very small. Thus, even when five viewing windows 130 are provided, information indicating the opening degree can be appropriately visually recognized from each of them. This is because the external gear 122 meshes with the driving side internal gear 112b of the outer cylinder 112 and the driven side internal gear 120c of the opening degree display member 120.

  The fact that the opening degree display member 120 has the cylindrical part 120a and the sloped part 120b is one of the reasons that the opening degree can be easily known from the side surface. Since the opening degree display member 120 has the cylinder part 120a and the slope part 120b, the opening degree display member 120 has the slope part 120b and has an opening degree display function compared with the case where the cylinder part 120a is not provided. It is easy to know the opening from a position where the valve 20 looks up.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.
6 to 9 show an on-off valve 90 with an opening degree display function according to this embodiment. FIG. 6 is a longitudinal sectional view of the on-off valve 90 with an opening degree display function according to the present embodiment. FIG. 7 is a plan view of the on-off valve 90 with an opening degree display function according to the present embodiment. FIG. 8 is a cross-sectional view taken along the line AA of FIG. 9 is a cross-sectional view taken along line BB in FIG.

  The on-off valve 90 with an opening degree display function according to the present embodiment is provided with a cup type handle 300 and an opening degree display mechanism 302 instead of the cup type handle 100 and the opening degree display mechanism 102 according to the first embodiment. Is.

  As shown in FIGS. 6 and 8, the cup-type handle 300 includes an inner cylinder 310, an outer cylinder 312, a top wall 314, and a fixing portion 316. As shown in FIGS. 8 and 9, a driving-side internal gear 312 b is fitted on the inner peripheral surface of the outer cylinder 312. As shown in FIG. 7, three viewing windows 330 are provided in the cup handle 300 from the outer cylinder 312 to the top wall 314. Other functions related to the inner cylinder 310, the outer cylinder 312, the top wall 314, and the fixing portion 316 are the same as the functions of the inner cylinder 110, the outer cylinder 112, the top wall 114, and the fixing portion 116 according to the first embodiment. .

  As shown in FIG. 6, an opening degree display mechanism 302 is accommodated in the cup-type handle 300. The opening display mechanism 302 includes an opening display member 320, an external gear 322 (which is a drive gear portion in the present embodiment), and a holding member 324. The opening degree display member 320 includes a cylindrical portion 320a, a slope portion 320b, a driven side internal gear 320c, and a disassembly prevention hook 320d. In the cylinder part 320a and the slope part 320b, the area | region where the character "open" is displayed and the area | region where the character "close" is displayed are provided alternately. These characters are information indicating the opening. These areas are visible from outside the viewing window 330. Incidentally, in the case of the present embodiment, as shown in FIG. 7, the angle formed by the portions having the letters “open” is 2π / 3 radians (120 °). Although not shown in the drawing, the angle formed by the portions having the characters “closed” is the same. The angle formed by the location where the character “open” is present and the location where the character “close” is adjacent is π / 3 radians (60 °). The holding member 324 includes a contact portion 340 (see FIGS. 6, 8, and 9), a gear holding portion 342 (see FIG. 6), and a separation preventing hook 344 (see FIGS. 8 and 9). The gear holding portion 342 serves as an axis of the external gear 322. As shown in FIG. 8, the separation prevention hook 344 catches on the disassembly prevention hook 320 d of the opening degree display member 320. This makes it difficult for the opening degree display member 320 to come off the holding member 324. Other functions regarding the opening degree display member 320, the external gear 322, and the holding member 324 are the same as the functions of the opening degree display member 120, the external gear 122, and the holding member 124 according to the first embodiment.

  Since the operation of the opening / closing valve 90 with an opening degree display function according to this embodiment is the same as the operation of the opening / closing valve 20 with an opening degree display function according to the first embodiment, the details thereof will not be repeated here.

  As described above, the opening / closing valve 90 with the opening degree display function according to the present embodiment tries to visually recognize the opening / closing state from the side surface for the same reason as the opening / closing valve 20 with the opening degree display function according to the first embodiment. Sometimes it is possible from various directions. In the opening / closing valve 90 with an opening degree display function according to the present embodiment, the disassembly prevention hook 320d of the opening degree display member 320 and the separation prevention hook 344 of the holding member 324 are caught on each other. This makes it difficult for the opening degree display member 320 to be detached from the holding member 324.

<Third embodiment>
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.
FIG. 10 is a longitudinal sectional view of the on-off valve 92 with an opening degree display function according to the present embodiment. FIG. 11 is a plan view of the on-off valve 92 with an opening degree display function according to the present embodiment. FIG. 12 is an enlarged view of FIG. However, in FIG. 11, the handle nut 34 and the push-up spring 36 are removed.

  The opening / closing valve 92 with an opening degree display function according to the present embodiment is provided with a cup type handle 400 and an opening degree display mechanism 402 instead of the cup type handle 100 and the opening degree display mechanism 102 according to the first embodiment. Is.

  The cup-type handle 400 includes an inner cylinder 410 (the inner cylinder 410 is a connection cylinder portion in the present embodiment), an outer cylinder 412, a top wall 414, and a fixing portion 416. As shown in FIGS. 10 and 11, three viewing windows 430 are provided from the outer cylinder 412 to the top wall 414 in the cup-type handle 400. As shown in FIGS. 10 and 12, a driving-side internal gear 412 b is formed on the inner peripheral surface of the outer cylinder 412. Furthermore, as shown in FIG. 10, the inner cylinder 410 and the valve stem 28 penetrate the fixing portion 416. As shown in FIG. 11, the inner cylinder 410 is provided with a connection-side serration 410a (the connection-side serration 410a is the connection-side uneven portion in the present embodiment). The fixed portion 416 is provided with a fixed-side serration 416a extending along the rotation axis of the valve rod 28 (the fixed-side serration 416a is a fixed-side uneven portion in the present embodiment). Thereby, when turning the cup-type handle 400, the connection side serration 410a and the fixed side serration 416a are engaged with each other. Since they mesh with each other, the inner cylinder 410 and the fixing portion 416 rotate together. When the cup type handle 400 is pulled out, the connection side serration 410a moves along the fixed side serration 416a. Since the connection-side serration 410a moves along the fixed-side serration 416a, the cup-type handle 400 can be easily detached from the valve stem 28. The connection side serration 410a also moves along the fixed side serration 416a when the cup-type handle 400 is fitted to the valve stem 28. Since the connection-side serration 410a moves along the fixed-side serration 416a, the direction of the viewing window 430 can be set quite freely. Other functions related to the inner cylinder 410, the outer cylinder 412, the top wall 414, and the fixing portion 416 are the same as the functions of the inner cylinder 110, the outer cylinder 112, the top wall 114, and the fixing portion 116 according to the first embodiment. .

  As shown in FIG. 10, an opening degree display mechanism 402 is accommodated in the cup-type handle 400. The opening display mechanism 402 includes an opening display member 420, a drive gear portion 422, and a holding member 424. The function of the opening display member 420 and the function of the holding member 424 are the same as those of the opening display member 120 and the holding member 124 according to the first embodiment. Therefore, detailed description thereof will not be repeated.

  The drive gear portion 422 according to the present embodiment receives torque from the driving-side internal gear 412 b of the cup-type handle 400 and applies torque to the driven-side internal gear 420 c of the opening display member 420. As a result, the drive gear unit 422 drives the opening degree display member 420 so that the rotational speed is lower than that of the cup-type handle 400. As shown in FIG. 12, the drive gear portion 422 has an outer cylinder engaging portion 450, a display member engaging portion 452, and a rotating shaft portion 454. The teeth of the outer cylinder meshing portion 450 mesh with the driving side internal gear 412b of the outer cylinder 412. The teeth of the display member meshing portion 452 mesh with the driven-side internal gear 420c of the opening degree display member 420. The rotation shaft portion 454 serves as a rotation shaft between the outer cylinder meshing portion 450 and the display member meshing portion 452. The number of teeth of the display member engagement portion 452 is smaller than the number of teeth of the outer tube engagement portion 450. In the present embodiment, the number of teeth of the driven side internal gear 420c of the opening degree display member 420 is “48”. The number of teeth of the driving-side internal gear 412b of the cup-type handle 400 is “76”. The number of teeth of the display member meshing portion 452 is “12”. The number of teeth of the outer tube engagement portion 450 is “21”.

  The operation of the opening / closing valve 92 with an opening degree display function according to this embodiment is the same as the operation of the opening / closing valve 20 with an opening degree display function according to the first embodiment and the operation of the opening / closing valve 90 with an opening degree display function according to the second embodiment. The details are not repeated here because they are similar.

  As described above, the opening / closing valve with opening degree display function 92 according to the present embodiment includes the opening / closing valve with opening degree display function 20 according to the first embodiment and the opening / closing valve with opening degree display function 90 according to the second embodiment. For the same reason, it is possible to view the open / closed state from the side from various directions. Moreover, the opening / closing valve 92 with an opening degree display function according to the present embodiment can set the direction of the viewing window 430 considerably freely when the cup-type handle 400 is attached to the valve rod 28. Since the direction of the viewing window 430 can be set quite freely, it is easy to set the viewing windows 430 to face in the same direction when a plurality of opening / closing valves 92 with an opening indication function are arranged in the pipeline. .

<Fourth embodiment>
Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a longitudinal sectional view of the on-off valve 94 with an opening degree display function according to this embodiment.

  The opening / closing valve 94 with an opening degree display function according to the present embodiment is provided with a cup type handle 500 and an opening degree display mechanism 502 instead of the cup type handle 100 and the opening degree display mechanism 102 according to the first embodiment. Is.

  The cup type handle 500 is the same as the cup type handle 400 according to the third embodiment except that the shape is slightly different. Therefore, detailed description thereof will not be repeated.

  The opening degree display mechanism 502 includes an opening degree display member 520, a drive gear portion 522, and a holding member 524. The drive gear portion 522 and the holding member 524 are the same as the drive gear portion 422 and the holding member 424 according to the third embodiment except that the shapes are slightly different. Therefore, detailed description thereof will not be repeated.

  The opening degree display member 520 includes a slope portion 520b and a driven side internal gear 520c. The inclined surface portion 520b is disposed so as to surround the valve rod 28 and to cover the drive gear portion 522. Although not shown, the slope 520b shows information indicating the opening. The driven side internal gear 520 c meshes with the display member meshing portion 552 of the drive gear portion 522.

  The operation of the on-off valve 94 with an opening degree display function according to this embodiment is the same as the operation of the on-off valve 20 with an opening degree display function according to the first embodiment or the operation of the on-off valve 92 with an opening degree display function according to the third embodiment. The details are not repeated here because they are similar.

  As described above, the opening / closing valve with opening degree display function 94 according to the present embodiment is the opening / closing valve with opening degree display function 20 according to the first embodiment or the opening / closing valve with opening degree display function according to the third embodiment. For the same reason, it is possible to view the open / closed state from the side from various directions.

<Modification>
The embodiments disclosed herein are illustrative in all respects. The scope of the present invention is not limited based on the above-described embodiment, and various design changes may be made without departing from the spirit of the present invention.

  For example, the valve box, the valve body, the valve seat, and the valve stem are not limited to those described above. The number of viewing windows is not limited to that described above. The information for indicating the opening is also not limited to the color and characters described above.

20, 90, 92, 94 .. Opening / closing valve with opening indication function,
22 ... Valve box,
24 ... Closing member,
26 ... valve lid,
28 ... Valve stem,
30 ... O-ring,
34 ... handle nut,
36 ... push-up spring,
38 ... Safety valve,
100, 300, 400, 500 ... Cup type handle,
102, 302, 402, 502 ... opening degree display mechanism,
110, 310, 410 ... inner cylinder,
112, 312, 412 ... outer cylinder,
112b, 312b, 412b...
114, 314, 414 ... top wall,
116, 316, 416 ... fixed part,
120, 320, 420, 520... Opening degree display member,
120a, 320a ... tube portion,
120b, 320b, 520b ... slope part,
120c, 320c, 420c, 520c ... driven side internal gear,
122, 322 ... external gear,
124, 324, 424, 524 ... holding members,
130, 330, 430 ... Viewing window,
140, 340 ... contact part,
142, 342 ... gear holding part,
220 ... leg screw part,
222: outlet nozzle,
224 ... Gas inlet,
226 ... Entrance way,
228 ... Close valve seat,
230 ... Closed valve chamber,
232 ... Exit road,
234 ... Gas outlet,
236 ... screw holes,
238 ... Air outlet,
240 ... valve body,
260 ... hexagonal head,
320d ... Disassembly prevention hook,
344: Detachment prevention hook,
410a ... connection side serration,
416a: fixed side serration,
422, 522 ... Drive gear part,
450 ... outer cylinder meshing part,
452,552 ... display member meshing part,
454 ... Rotating shaft part,

Claims (6)

A handle for rotating the valve stem;
An opening / closing valve with an opening degree display function provided with an opening degree display mechanism housed in the handle,
The handle is
A driving-side internal gear;
A plurality of viewing windows arranged to surround the valve stem,
The opening indication mechanism is
An opening display that is disposed between the valve stem and the viewing window, has a driven-side internal gear, rotates around the valve stem, and displays information visible from outside the viewing window. Members,
A drive gear unit that drives the opening degree display member so that the rotational speed is lower than that of the handle by receiving torque from the driving side internal gear of the handle and applying torque to the driven side internal gear of the opening degree display member; An on-off valve with an opening degree display function, characterized by comprising: The number of teeth of the driven side internal gear of the opening indication member is less than the number of teeth of the driven side internal gear of the handle,
2. The on-off valve with an opening degree display function according to claim 1, wherein the driving gear portion has an external gear that meshes with the driving-side internal gear and the driven-side internal gear. The drive gear portion is
An outer cylinder meshing portion meshing with the driving-side internal gear of the handle;
Provided on the same axis as the outer cylinder meshing portion, moving in synchronization with the outer cylinder meshing portion, and having a display member meshing portion meshing with a driven side internal gear of the opening degree display member,
The number of teeth of a portion of the display member meshing portion that meshes with the driven side internal gear is smaller than the number of teeth of a portion of the outer cylinder meshing portion that meshes with the driving side internal gear. The on-off valve with an opening degree display function according to 1. The handle is
A fixed portion attached to the valve stem;
And further having a connecting cylinder part through which the fixed part and the valve stem penetrate,
The fixed part has a fixed uneven part extending along the rotation axis of the valve stem;
The on-off valve with an opening degree display function according to claim 1, wherein the connection cylinder portion has a connection-side uneven portion that meshes with the fixed-side uneven portion.   The opening degree display function according to claim 1, wherein the opening degree display mechanism further includes a holding member that rotatably holds the opening degree display member and holds the drive gear unit. Open / close valve. The holding member is
A contact portion for rotatably holding the opening degree display member by contacting the opening degree display member;
The opening / closing valve with an opening degree display function according to claim 4, further comprising a gear holding portion that holds the drive gear portion.

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