JP5061050B2 - Pack type valve - Google Patents

Description

  The present invention relates to a pack-type valve that is directly connected to a gas cylinder and used for gas supply or filling, and in particular, the handle operation is made smooth by preventing the screw part that screw-engages the valve body and Kelep. The present invention relates to a pack type valve capable of improving the performance and extending the life of parts.

  Conventionally, as a valve used for a gas cylinder filled with compressed gas or liquefied gas, there are a pack type valve and a diaphragm type valve. Pack type valves use packing type joints or bolts to ensure airtightness inside the valve, while diaphragm type valves use a thin metal plate diaphragm that bends as the valve body moves to ensure airtightness inside the valve. Is secured.

  In comparison with the diaphragm type valve, the pack type valve has a large moving amount of Kelep that opens and closes the valve body, and can efficiently flow a large amount of gas. In addition, since a consumable diaphragm is not used, there is an advantage that it has a long life and can be used repeatedly by being disassembled and maintained.

  The configuration of a conventional general pack type valve is shown in FIGS. FIG. 8 is a cross-sectional view showing a conventional pack type valve. FIG. 9 is a perspective view showing a spindle and kerep of a conventional pack type valve.

  In these drawings, a conventional pack-type valve 100 includes a hollow valve body 110, and a structure in which a kelep 150 for connecting gas inflow and outflow passages 114 and 115 is screwed into a hollow portion 111 of the valve body 110. It has become. A valve body 151 for closing the gas inlet 114a is attached to the lower end of the kerep 150, and a square hole 152 is formed in the upper end. A square bar 121 provided at the lower end of the spindle 120 is inserted into the square hole 152 of the kerep 150. When the handle 130 attached to the upper end of the spindle 120 is rotated, the rotation of the spindle 130 is transmitted to the Kelep 150 through the square bar 121 and the square hole 152 and is screwed into the hollow portion 111 of the valve body 110. 113 and 153, the Kellep 150 moves in the vertical direction, and the gas inlet 114a is opened and closed.

As such conventional pack type valves, for example, there are those proposed in Patent Documents 1 and 2.
JP 2006-336819 A (see FIG. 1) JP 7-280134 A (see FIG. 1)

  However, the conventional pack type valve 110 described above has a configuration in which the rotation of the spindle 120 is transmitted to the Kelepp 150 through the connection between the square bar 121 and the square hole 152. For this reason, the rotational axis S between the spindle 120 and the Kellep 150 is very small due to the bias of the force when operating the handle 130, the difficulty of centering the square hole 152, the clearance or dimensional error between components, and the like. There is a problem that the screw parts 113 and 153 that screw the valve main body 110 and the Kelep 150 are galvanized (hereinafter simply referred to as “galling of the screw parts 113 and 153”).

  The threaded portions 113 and 153 in the conventional pack type valve 110 are almost without exception in a relatively short period from the start of use, and due to such threaded portions 113 and 153, The pack-type valve 110 is recognized by general users as having a heavy rotating operation of the handle 130 and poor operability and feeling. As a result, although the pack type valve 110 has many advantages as compared with the diaphragm type valve, the demand of general users is inclined to the diaphragm type valve.

  In order to eliminate the above-described galling of the screw portions 113 and 153, a large play is intentionally provided between the female screw 113 and the male screw 153 for screwing the valve main body 110 and the Kelep 150, and the rotation shaft is rotated by this large play. Attempts have been made to absorb the small displacement of S, but rattling caused by play places a burden on the screw portions 113 and 153 and makes the opening and closing operation of the Kelep 150 unstable. There was a problem that the lifetime of the was shortened.

  As described above, the pack type valve has a problem that the handle operability is poor due to the galling of the threaded portion, but it is superior to the diaphragm type valve in that a large amount of gas can be efficiently flowed in and out. ing. The present invention has been made in view of the above problems, and by preventing the threaded portion that screw-joins the valve body and Kelep, the handle operation is smoothed, the operability is improved, and the life of the parts is extended. It aims at providing the pack type valve which can aim at.

  In order to achieve the above object, the pack type valve of the present invention is a pack type valve that is directly connected to a gas cylinder and is used for supplying gas from the gas cylinder to the outside or filling gas from the outside to the gas cylinder. A hollow valve body provided with a closing valve chamber for connecting the gas inflow path and the outflow path, a ground nut screwed into one end opening of the valve body to seal the hollow, and the valve body The closed valve chamber is formed by being screwed to the hollow inner wall, and a Kelep having a valve body for opening and closing the gas inflow passage at one end, one end is housed in the hollow of the valve body, and the other end is A rotatable spindle that penetrates the ground nut and a handle attached to the other end of the spindle are provided, and the rotation shafts of the two are changed between the spindle and the Kelepp. While absorbing, certain rotation of the spindle as a structure in which a rotation transmitting means capable of transmitting to the Kereppu.

  According to such a configuration, there is a slight displacement (center misalignment) of the rotating shaft between the spindle and the Kelep due to a bias in force when operating the handle and a clearance or dimensional error between components. Even if it occurs, the rotation transmission means provided between the spindle and the Kelep absorbs a minute displacement of both rotation shafts, and only the rotation of the spindle is transmitted to the Kelepp. As a result, it is possible to prevent galling of the threaded portion for screwing the valve main body and Kelep, smooth the handle operation of the pack-type valve, improve operability and extend the life of the parts.

  Here, as the “rotation transmission means” of the present invention, for example, in a vehicle, a machine tool, or the like, an absorption principle of axial displacement in a shaft coupling that connects a drive shaft and a driven shaft is applied. As a result of intensive studies by the present inventor, the rotation transmission means of the present invention has a size that fits within the valve body of the pack type valve, a small number of parts, a simple structure, and a corrosive gas. Corrosion resistance is required, and for example, the principle of absorbing axial displacement such as Oldham couplings, disk couplings, rubber couplings, spring couplings, precision correction joints, precision spring shaft joints, universal joints, etc. can be applied. is there. In particular, the rotation transmission means using the principle of absorbing the displacement in the axial direction of Oldham couplings, rubber couplings, and spring couplings can be realized with a simple structure with a small size and a small number of parts, and all the components are made resistant to corrosion. It can be composed of a metal material or a resin material. A specific configuration of such “rotation transmission means” will be described in detail in an embodiment of the present invention.

  Preferably, the rotation transmitting means includes a ridge and a groove extending in a direction substantially orthogonal to a rotation axis of the spindle and the Kelep, and the rotation of the spindle is caused by loosely fitting the ridge and the groove to each other. Is transmitted to the Kelep, and the ridges and the grooves are relatively slid to absorb the displacement of the spindle and the rotation axis of the Kelep.

  In this configuration, the absorption principle of the axial displacement of the Oldham joint is applied to the rotation transmission means. According to such a configuration, even when a minute displacement of the rotation shaft occurs between the spindle and the Kelep, this minute displacement is caused by relative sliding and clearance of the ridges and the grooves that are the rotation transmitting means. It is absorbed and only the rotation of the spindle is transmitted to Kelep.

  As a result, the threaded portion can be prevented from being squeezed, the handle operation of the pack type valve can be smoothed, the operability can be improved, and the life of the parts can be extended. Further, the ridges and grooves as the rotation transmitting means can be centered more easily and with higher accuracy than conventional square bars and square holes, and the production efficiency of the pack type valve can be improved. .

  In particular, a conventional square hole has to be provided with a relief hole (see reference numeral 154 in FIGS. 8 and 9) inclined obliquely downward in order to discharge the liquid gas accumulated in the square hole. However, it is not necessary to provide a relief hole for the liquid gas in the concave groove that constitutes the rotation transmission means, and the liquid gas should be positively discharged from both ends of the concave groove naturally or by being pushed by the ridges. become. Thereby, this rotation transmission means is less contaminated by the liquid gas like a conventional square hole, and can be easily processed with the minimum necessary man-hours.

  More preferably, as the rotation transmitting means, a first ridge or groove is provided at one end of the spindle, and a second ridge or groove is provided at the other end of the Kelep, and the one end of the spindle and the Kelep are provided. A third groove or protrusion that is interposed between the other end of the first groove and loosely fits with the first protrusion or groove and the other end of the second protrusion or groove and loosely fits with one end. A sliding joint provided with fourth grooves or ridges extending in directions substantially perpendicular to each other, wherein the outer diameter of the sliding joint is made smaller than the hollow inner diameter of the valve body, and the outer diameter and the hollow inner diameter When the sliding joint slides within the range of the dimensional difference, the displacement of the spindle and the rotating shaft of the Kelep is absorbed.

  In the above configuration, the ridge and the groove can be variously combined. For convenience of explanation, for example, a first groove is formed at one end of the spindle and a second groove is formed at the other end of the Kelep, Assume that the sliding joint is provided with third and fourth ridges that are loosely fitted in the first and second concave grooves. The sliding direction between the first groove and the third ridge is defined as the X direction, and the sliding direction between the second groove and the fourth ridge is defined as the Y direction.

  According to such a configuration, for example, even when the force when operating the handle is biased and a minute displacement of the rotating shaft is generated between the spindle and the Kelep, this minute displacement is the first and first. It is absorbed by the sliding in the X direction and the Y direction between the two concave grooves and the third and fourth ridges, and only the rotation of the spindle is transmitted to Kelepp.

  As a result, the threaded portion can be prevented from being squeezed, the handle operation of the pack type valve can be smoothed, the operability can be improved, and the life of the parts can be extended. Moreover, displacement absorption and rotation transmission of the rotating shaft can be realized with a simple structure with a small size and a small number of parts, and it is possible to improve the manufacturing efficiency of the pack type valve and improve the maintainability. be able to.

  More preferably, a gap in the rotational axis direction of the spindle and the Kelep is formed between the first convex groove or concave groove of the spindle and the third concave groove or convex groove of the sliding joint, The Kelep moves forward and backward within this gap.

  According to such a configuration, in the above example, in the state where a gap is formed between the first concave groove of the spindle and the third protrusion of the sliding joint, the rotation of the spindle is performed by the sliding joint. Is transmitted to. The rotation of the sliding joint is transmitted to Kelep through the fourth ridge and the second groove. At this time, the Kelep moves back and forth within the range of the gap between the first groove and the third ridge, so that the back and forth movement is not transmitted to the spindle, and the movement accompanying the rotation operation of the handle (for example, (Vertical movement) can be eliminated. Thereby, the operativity of a handle can be made favorable and the buffer with other members by the movement of a handle can be prevented.

  According to the pack-type valve of the present invention, it is possible to smooth the handle operation by preventing the threaded portion for screwing the valve main body and the Kelep, thereby improving the operability and extending the life of the parts. In addition, the pack type valve of the present invention can be realized with a simple structure and a small size with a small number of parts, and the production efficiency and maintainability can be improved. As a result, the advantage of the pack type valve that allows a large amount of gas to flow in and out efficiently is reviewed, and an increase in demand for the pack type valve is expected.

  Hereinafter, a pack type valve according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the JIS code is omitted when illustrating the type of stainless steel or the like.

<First Embodiment>
First, a pack type valve according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a pack type valve according to a first embodiment of the present invention. 2A is a perspective view showing a spindle, a sliding joint, and a kelp of the pack type valve, and FIG. 2B is a plan view and a side view of the sliding joint. 3 (a) and 3 (b) are explanatory views showing relative sliding operations of the spindle, sliding joint and Kelep of the pack type valve. FIG. 4 is an explanatory view showing the sliding operation of the sliding joint with respect to the spindle and kerep of the pack type valve. 5 (a) and 5 (b) show a modification of the sliding joint.

  1, the pack type valve 1 according to the present embodiment mainly includes a valve body 10, a spindle 20, a handle 30, a ground nut 40, a kerep 50, a sliding joint 60, a safety nut 70, It is composed of a cap 80.

[Valve body]
The valve body 10 is a housing in which a hollow portion 11 having a substantially circular cross section is provided, and is formed of a metal material having corrosion resistance, for example, SUS316 stainless steel. A gas inflow passage 14 communicates with the lower portion of the hollow portion 11, and a gas outflow passage 15 communicates with one side of the hollow portion 11. Furthermore, the lower end side of the hollow part 11 where both the inflow path 14 and the outflow path 15 open is a closed valve chamber 16 closed by a kerep 50 described later. A gas inlet 14a is opened in the closing valve chamber 16, and the inlet 14a is opened and closed by a valve body 51 described later.

  Further, a blowout path 17 is branched to the other side of the gas inflow path 14, and the blowout path 17 is sealed with a safety nut 70 via a packing P <b> 2. The central portion of the safety nut 70 is filled with a soluble alloy 71. Such a safety nut 70 plays a role in preventing a high-pressure gas container such as a gas cylinder from exploding when an accident such as a fire occurs. That is, when a high-pressure gas container (not shown) to which the pack type valve 1 is attached is exposed to a high temperature environment such as a fire, the soluble alloy 71 filled in the safety nut 70 is melted, and the gas flow A passage for communicating the inlet 14a with the outside is formed. By expelling the gas in the high-pressure gas container from this passage, the pressure in the high-pressure gas container is reduced and explosion is prevented.

  Further, the opening of the gas outflow passage 15 is closed by a cap 80 via a packing P3. As a material of the packings P2 and P3, for example, a fluororesin such as PTFE can be used. Further, as the material of the cap 80, for example, C3604BD plated with nickel can be used.

[spindle]
The spindle 20 is a shaft member for opening and closing the valve body 51 by advancing and retracting the Kelep 50, and is formed of, for example, stainless steel such as SUS304 having corrosion resistance or C3604BD plated with nickel.

  A male screw portion 22 for attaching a handle 30 is provided at the upper end portion of the spindle 20, and a handle nut 32 is fastened to the male screw portion 22 to fix the handle 30. A spring 31 is interposed between the spindle 20 and the handle 30, and the handle 30 is urged toward the ground nut 40 described below by the spring 31. The first concave groove 21 (rotation transmission means) formed on the lower end surface of the spindle 20 will be described in detail in the section of [Rotation transmission means] described later.

[Ground nut]
The ground nut 40 serves as a lid for the hollow portion 11 of the valve body 10 described above, and is screwed with the spindle 20 to rotatably support it. Examples of the material of the ground nut 40 include stainless steel such as SUS303 and SUS304, or brass (brass) such as C3604BD that has been subjected to nickel plating to provide corrosion resistance. For example, brass (brass) such as C3604BD that has been nickel-plated to give corrosion resistance is suitable.

  A bearing hole 41 through which the shaft portion of the spindle 20 passes is provided at the center of the ground nut 40. On the inner wall surface of the bearing hole 41, two O-rings (see reference numeral “O (O)”) for maintaining a sealing property with the shaft portion of the spindle 20 are interposed. As the material of the O-ring, for example, fluorine rubber such as FPM or nitrile rubber such as NBR can be used. Preferably, fluorine rubber such as FPM is used.

  Further, a female screw portion 42 is provided on the outer periphery of the lower end portion of the gland nut 40, and this female screw portion 42 is screwed with a male screw portion 12 formed on the outer periphery of the upper end of the valve body 10. Further, an annular packing P1 that presses against the shaft portion of the spindle 20 and the upper end edge of the valve body 10 is interposed on the lower end surface (contact surface) surrounded by the female screw portion 42 of the ground nut 40. By this packing P1, the airtightness in the hollow part 11 of the valve body 10 is maintained. As a material of the packing P1, for example, a fluororesin such as PTFE can be used.

[Kelep]
The kerep 50 has a shape suitable for the lower end side of the hollow portion 11 of the valve body 10 described above, and a male screw portion 53 (see FIG. 2A) is provided on the side portion thereof. The male threaded portion 53 is screwed into a female threaded portion 13 provided on the inner wall of the hollow portion 11 of the valve body 10, whereby the closing valve chamber 16 is formed on the lower end side of the hollow portion 11. A valve body 51 that closes the gas inlet 14 a is attached to the lower end side of the kerep 50.

  As a material for the Kellep 50, for example, stainless steel such as SUS304 and SUS306 can be used. Here, depending on the gas used, the valve body 10, the spindle 20, and the kerep 50 may be required to have high corrosion resistance. In such a case, it is preferable that the material of the valve body 10, the spindle 20, and the Kellep 50 is SUS306. When the valve body 10 and the Kelep 50 are made of materials having the same hardness as described above, generally, the thread portions 13 and 53 are likely to be galling, but in this embodiment, the spindle is rotated by the rotation transmission means described later. Since the minute displacement of the rotating shaft S generated between the rotary shaft 20 and the Kelepp 50 can be absorbed, the screw portions 13 and 53 are less likely to be galling.

  As described above, the valve body 51 is for opening and closing the gas inlet 14a of the valve body 10 to control the gas flow. The valve body 51 is formed of a resin material that is excellent in airtightness and that does not easily deform even after many years of use. As this material, for example, PCTFE, PVDF or polyamide can be used, and PCTFE is particularly preferable.

  When the rotation of the handle 30 or the spindle 20 described above is transmitted to the Kellep 50, the Kellep 50 moves up and down in accordance with the screwing of the male screw portion 53 and the female screw portion 13, and the gas inlet 14a is moved by the valve body 51. Opened and closed. The second concave groove 52 (rotation transmission means) formed on the upper end surface of the kerep 50 will be described in detail in the item of “rotation transmission means” below.

[Rotation transmission means]
In order to transmit the rotation of the spindle 20 to the Kellep 50, in this embodiment, a rotation transmission means as shown in FIGS. 2 (a) and 2 (b) is interposed between the spindle 20 and the Kelep 50. is there. The rotation transmission means of the present embodiment is configured to use the absorption principle of the axial displacement of the Oldham joint.

  In these drawings, the rotation transmitting means according to the present embodiment is provided with a first concave groove 21 on the lower end surface of the spindle 20 and a second concave groove 52 on the upper end surface of the kerep 50, respectively. The sliding joint 60 is interposed therebetween. The upper surface of the sliding joint 60 is provided with a third protrusion 61 that is loosely fitted to the first groove 21, and the fourth protrusion that is loosely fitted to the second groove 52 on the lower surface. 62 is provided. As shown in FIG. 5B, the third ridge 61 extends in the X direction in plan view, and the fourth ridge 62 extends in the Y direction in plan view. These third and fourth ridges 61 and 62 are extended. Are substantially orthogonal to each other on the upper and lower surfaces of the sliding joint 60.

  More specifically, the lower end portion of the spindle 20 has a large-diameter circle that is substantially equal to the inner diameter L1 of the hollow portion 11 of the valve body 10, and a first concave groove 21 is provided along the diameter of the large-diameter circle. It is. On the other hand, the outer diameter L2 of the sliding joint 60 is smaller than the inner diameter L1 of the hollow portion 11. Thereby, when the sliding joint 60 is disposed in the hollow portion 11, a gap having a dimension difference L1-L2 is formed between the sliding joint 60 and the inner wall of the hollow portion 11 (FIGS. 1 and 4). reference).

  The operation of the rotation transmitting means in which the first concave groove 21 and the third convex groove 61 as described above, and the fourth convex stripe 62 and the second concave groove 52 are loosely fitted to each other will be described. First, as shown in FIGS. 3A and 3B, when this rotation transmission means is configured outside the hollow portion 11 of the valve body 10, the spindle 20 and the sliding joint 60 slide in the X direction and slide. The joint 60 and the kerep 50 can slide relative to each other in the Y direction. As shown in FIG. 4, when such a rotation transmission means is configured in the hollow portion 11 of the valve body 10, the sliding joint 60 slides in the XY direction within the range of the dimensional difference L1-L2. It becomes possible to move.

  In FIG. 4, the sliding joint 60 slides when a minute displacement occurs on the rotation axis S of the spindle 20 and the Kellep 50. For example, when a bias occurs in the force when operating the handle 30 and a slight displacement of the rotation axis S occurs between the spindle 20 and the Kelepp 50, the sliding joint 60 that receives this bias in the force is It slides in the XY direction within the range of the dimension difference L1-L2. As a result, the minute displacement of the rotation axis S is absorbed, and the rotation of the spindle 20 is achieved through loose fitting of the first concave groove 21 and the third convex stripe 61 and the fourth convex stripe 62 and the second concave groove 52. Only is transmitted to Kelepp 50.

  Here, in this embodiment, as shown in FIG. 4, when the kelep 50, the sliding joint 60, and the spindle 20 are assembled in the hollow portion 11 of the valve body 10 in this order, A predetermined gap L3 is formed between the third protrusion 61 and the third protrusion 61. That is, at the time of assembling the kerep 50, the valve body 51 is screwed in until the gas inlet 14a is closed, and in this state, the fourth protrusion 62 is loosely fitted in the second groove 52. The sliding joint 60 is assembled. Then, the spindle 20 is assembled so that the first groove 21 is loosely fitted to the third ridge 61. When the spindle 20 is assembled, a predetermined gap L3 is formed between the first groove 21 and the third ridge 61.

  According to such a configuration, the Kellep 50 that has received the rotation of the spindle 20 through the sliding joint 60 moves back and forth within a predetermined gap L3, and opens and closes the gas inlet 14a. At this time, the advance / retreat operation of the Kelepp 50 is not transmitted to the spindle 20. Thereby, it is possible to eliminate the vertical movement (refer to “Z direction” in FIG. 4) accompanying the rotation operation of the handle 30. As a result, the operability of the handle 30 can be improved, and buffering with other members due to the vertical movement of the handle 30 can be prevented.

[Example of change of rotation transmission means]
The rotation transmitting means is not limited to the combination of the first concave groove 21 and the third convex groove 61 and the fourth convex groove 62 and the second concave groove 52 as described above. The ridges and the grooves constituting the rotation transmission means can be changed to various combinations as shown in FIGS. 5 (a) and 5 (b).

  For example, as shown to Fig.5 (a), it is good also as a structure which provided the 3rd protruding item | line 61 in the upper surface of the sliding joint 60, and the 4th ditch | groove 64 in the lower surface. In this case, the first concave groove 21 is provided on the lower end surface of the spindle 20, and the second protrusion (not shown) is provided on the upper end surface of the kerep 50.

  Further, for example, the configuration may be such that the third and fourth concave grooves 63 and 64 are provided on the upper surface and the lower surface of the sliding joint 60, respectively. In this case, a first ridge (not shown) is provided on the lower end surface of the spindle 20, and a second ridge (not shown) is provided on the upper end surface of the kerep 50.

Second Embodiment
Next, a pack type valve according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 shows a main part of a pack type valve according to a second embodiment of the present invention, where FIG. 6 (a) is a sectional view and FIG. 6 (b) is an exploded perspective view.

  The rotation transmission means in the pack type valve 2 of the present embodiment is configured to use the principle of absorbing the axial displacement of the rubber coupling. That is, as shown in FIGS. 4A and 4B, couplings 22 and 53 having outer diameters substantially equal to the inner diameter L1 of the hollow portion 11 are provided at the lower end of the spindle 20 and the upper end of the kerep 50, respectively. is there. The couplings 22 and 53 are provided with concavo-convex walls 22a and 53a that are engaged with each other with a gap L4. Between these couplings 22 and 53, a substantially gear-shaped rubber spacer 91 is interposed. On the outer periphery of the rubber spacer 91, a plurality of small rubber pieces 91a, 91a, 91a,.

  According to such a configuration, for example, when a bias occurs in the force when operating the handle 30 and a minute displacement of the rotation axis S occurs between the spindle 20 and the Kellep 50, the minute displacement is caused by the rubber. It is absorbed by elastic deformation of each rubber piece 91a of the spacer 91, and only rotation of the spindle 20 is transmitted to the Kelepp 50 through meshing of the couplings 22 and 53 via each rubber piece 91a.

<Third Embodiment>
Next, a pack type valve according to a third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a cross-sectional view showing a main part of a pack type valve according to a third embodiment of the present invention.

  The rotation transmission means in the pack type valve 3 of the present embodiment is configured to use the principle of absorbing the axial displacement of the spring coupling. That is, as shown in the figure, couplings 23 and 54 having outer diameters approximately equal to the inner diameter L1 of the hollow portion 11 are provided at the lower end of the spindle 20 and the upper end of the kerep 50, respectively. 54 is connected by a spring 92.

  According to such a configuration, for example, when a bias occurs in the force when operating the handle 30 and a minute displacement of the rotation axis S occurs between the spindle 20 and the Kellep 50, this minute displacement is caused by the spring. The rotation of the spindle 20 is transmitted to the Kellep 50 through the spring 92.

<Effects of pack type valve>
As described above, according to the pack-type valves 1 to 3 according to the above-described embodiments, the spindle 20 is caused by a bias of force when the handle 30 is operated, a clearance or a dimensional error between components, and the like. Even if a minute displacement of the rotation axis S occurs between the spindle 20 and the Kellep 50, the rotation transmission means provided between the spindle 20 and the Kelepp 50 absorbs the minute displacement of the rotation axis S, and the rotation of the spindle 20 Only is transmitted to Kelepp 50. As a result, it is possible to prevent the screw parts 13 and 53 that screw the valve body 10 and the Kelep 50 from being squeezed, smooth the operation of the handle 30, improve operability, and extend the life of parts. Can do.

It is sectional drawing which shows the pack type valve | bulb which concerns on 1st Embodiment of this invention. FIG. 4A is a perspective view showing a spindle, a sliding joint, and a kelp of the pack type valve, and FIG. 4B is a plan view and a side view of the sliding joint. FIGS. 9A and 9B are explanatory views showing relative sliding operations of the spindle, sliding joint and Kelep of the pack type valve. It is explanatory drawing which shows the sliding operation | movement of the sliding joint with respect to the spindle and Kelep of the said pack type valve | bulb. The same figure (a), (b) shows the example of a change of the said sliding joint. The main part of the pack type valve | bulb which concerns on 2nd Embodiment of this invention is shown, The figure (a) is sectional drawing, The figure (b) is an exploded perspective view. It is sectional drawing which shows the principal part of the pack type valve which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the conventional pack type valve | bulb. It is a perspective view which shows the spindle and Kelep of the conventional pack type valve | bulb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pack type valve 10 Valve body 11 Hollow part 12 Male thread part 13 Female thread part 14 Inflow path 14a Inlet 15 Outlet path 16 Closing valve chamber 20 Spindle 21 First concave groove (rotation transmission means)
22 Male thread part 30 Handle 40 Ground nut 41 Bearing hole 42 Female thread part 50 Kerep 51 Valve body 52 Second concave groove (rotation transmission means)
53 Male thread 60 Sliding joint (rotation transmission means)
61 3rd ridge (rotation transmission means)
62 4th ridge (rotation transmission means)
70 Safety nut 80 Cap

Claims (3)

A pack type valve that is directly connected to a gas cylinder and is used to supply gas from the gas cylinder to the outside or to fill the gas cylinder from the outside,
A hollow valve body provided with a closed valve chamber for connecting the gas inflow path and the outflow path;
A gland nut that is screwed into one end opening of the valve body to seal the hollow;
Kelep having a valve body that opens and closes the inflow passage of the gas at one end while screwing into a hollow inner wall in the valve body to form the closing valve chamber;
A rotatable spindle having one end housed in the hollow of the valve body and the other end penetrating the ground nut;
A handle attached to the other end of the spindle,
Provided between the spindle and the Kelep is a rotation transmission means capable of transmitting the rotation of the spindle to the Kelepp while absorbing the displacement of the rotation shafts of both .
The rotation transmitting means includes a ridge and a groove extending in a direction substantially orthogonal to the spindle and the rotation axis of the Kelepp, and the rotation of the spindle is controlled by the ridge and the groove being loosely fitted to each other. A pack type valve characterized by absorbing displacement of the spindle and the rotating shaft of the Kelepp by the fact that the ridge and the groove slide relative to each other . As the rotation transmission means,
While providing a first ridge or groove on one end of the spindle and a second ridge or groove on the other end of the Kelep,
A third groove or protrusion that is interposed between one end of the spindle and the other end of the Kelep and loosely fits with the first protrusion or groove at the other end, and the second protrusion at one end. Provided with a sliding joint provided with a fourth groove or ridge that loosely fits with the groove or groove in a direction substantially perpendicular to each other;
The outer diameter of the sliding joint is made smaller than the hollow inner diameter of the valve body, and the sliding joint slides within a dimensional difference between the outer diameter and the hollow inner diameter. pack valve of claim 1, wherein the absorbing displacement of the shaft. A gap in the rotational axis direction of the spindle and the Kelep is formed between the first convex groove or concave groove of the spindle and the third concave groove or convex groove of the sliding joint, and the range of the gap The pack type valve according to claim 2 , wherein the Kelep moves forward and backward.

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