JP4521698B2 - A stop cock for a joint connection pipe and a joint connection pipe provided with the stop cock - Google Patents

Description

  The present invention relates to a stop valve for a joint connection pipe and a joint connection pipe provided with the stop cock used for equipment such as water supply / hot water supply and floor heating, and in particular, a liquid such as water supplied from the outside, an antifreeze liquid, etc. A joint connection pipe for supplying a fluid such as a fluid heat medium or steam (hereinafter referred to as a fluid) to an arbitrary pipe, and a joint stop pipe for the joint connection pipe provided to discharge the fluid inside the pipe to the outside of the pipe. The present invention relates to a joint connecting pipe provided with a faucet.

  If a fluid such as water remains in various pipes during cold weather, the fluid in the pipes may freeze and expand in volume, which may damage the pipes. In order to prevent the fluid from freezing and to discharge the fluid inside the pipe to the outside of the pipe for inspection and repair, the pipe has a water outlet for draining water and water in normal use through the pipe. A stop cock is provided to stop water from leaking from the outlet for extraction.

  Conventionally, there are many methods for attaching a water stopcock to a joint connecting pipe by screwing a water stopcock and a screw portion provided at the attachment portion, and although these details are omitted in detail, FIG. The structure shown in FIG. 39 is used, and in order to attach and detach the stop cock 81 to / from the drain port 4 of the joint connecting pipe 82, the screw section 84 on the joint connecting pipe 82 side is connected to the stop cock 81 side. The screw part 83 had to be screwed together.

In addition, most of the water stopcocks with a shape other than the screw type are of a type in which a stepped portion provided at the attachment part of the stopcock or the joint connection pipe and an elastic member such as an O-ring or packing are closely fitted. there were. (For example, see Patent Document 1)
JP 10-292442 A

The structure of the mounting part between the stop cock and the joint connection pipe, which is the conventional product described above, is a system in which the screw parts formed on both the stop cock and the joint connection pipe are screwed together. It takes. In the case where the conventional product is made of metal, after forming the outer shape with a mold, a hole is drilled inside the main body and the tube is penetrated, or the shape is premised on metal processing, which also requires labor and cost.
In addition, in order to drain the fluid inside the joint connecting pipe during use, the screw portion must be turned many times to open and close the stop cock, which is troublesome and time consuming. When closing with such a water stopcock, it is difficult for the operator to know how many times to turn the screw, so there is a possibility that the screw will be broken too much. In addition, when opening the stop cock, if the screw is fully turned, the stop cock often comes off from the joint connecting pipe, and the stop cock is often lost.

  In the example of the conventional product shown in FIGS. 35 to 39, even if the screw portion of the stop cock is not turned all the way, the fluid inside the pipe can be externally only by turning it slightly to create a gap between the joint connecting pipe and the stop cock. However, when the pressing force from the fluid inside the joint connection pipe is strong, the stop cock is gradually pressed by the fluid, and the screw part of the stop cock turns and loosens. Therefore, there is a possibility that the water stop cock falls off from the joint connecting pipe. In order to prevent the faucet from falling off or being lost as described above, separate parts for connecting the faucet to the joint connection pipe are required, which increases manufacturing costs and requires assembly of the parts. There was a problem that it took a lot of work.

  When the conventional screw threaded stop cock is used over a long period of time, if the pressing force from the fluid inside the joint connection pipe is applied to the stop cock, the threaded portion of the stop cock will be gradually closed even in the closed state. The fluid inside the pipe leaks through the gap between the joint connection pipe and the stop cock made by this loosening, and in the worst case, the stop cock turns around and comes off from the joint connection pipe. There was a serious disadvantage that there is a risk of causing. At present, in order to prevent water leakage accidents as described above, when the stop cock is loosened, measures are taken so that the sensor of the device that uses the stop cock recognizes an error. Every time it loosens, an error message is displayed on the equipment, and a repair person is called.

  In addition, there is a drawback in that if the threaded portion of the joint connecting pipe or the stop cock is damaged during the transportation or installation of the parts, it becomes useless.

  In order to solve the problems of the above-described conventional threaded type, there is a method in which a stop cock is fitted into a joint connector. As an example, JP-A-10-292442 (Patent Document 1) can be cited. This is an easy-to-manufacture shape, and the operation for attaching and removing the stop cock has been simplified. However, since the elastic member O-ring mounted in the groove provided on the inner wall of the joined cylindrical portion is fixed and held only by the engagement of the stepped portion formed on the outer periphery of the stop cock, the stop cock is held. The holding force when the pressure to push the stop cock by the fluid passing through the pipe body is strong remains uneasy. In addition, when used for a long period of time, the O-ring deteriorates due to wear and deformation while repeated installation and removal of the water faucet, and further, the holding power is weakened and the function of the faucet cannot be performed.

  The present invention adopts the following configuration in order to solve the problems of the above-described conventional means for attaching the water faucet and the joint connecting pipe.

  In other words, the present invention relates to a joint connection pipe used for the purpose of connecting a pipe for passing a fluid supplied from the outside and a pipe used for equipment such as a heat source machine, and discharging the fluid inside the pipe to the outside, and the joint. The invention relates to a water stop cock that is used by being attached to a drain pipe for discharging a fluid provided integrally with a connection pipe and sealing the water drain pipe. The stop cock has one or more flexible arms formed integrally with the shaft in a shape branched from the shaft of the stop cock. The part is formed.

  The joint connection pipe is provided with an inlet and an outlet for passing a fluid and connecting to various pipes at both ends of a single vertical pipe, and a drain pipe is branched from the middle of the pipe. Thus, it is integrally formed in such a shape that the letter “T” is tilted 90 degrees sideways. In addition, a lead groove for attaching a locking portion of the water stopper is integrally formed on the outer periphery of the drain pipe.

  The lead groove is formed on the outer periphery of the drainage pipe at one or a plurality of locations with a lead angle of about 45 degrees from the open end of the drainage pipe to the branching portion with the joint connection pipe. Note that the end of the lead groove and the end of the groove end of the lead groove and the end of the locking portion of the water stopcock are formed in a wedge shape so as to fit each other.

  Water drainage work is performed by forming straight portions at both ends of the lead groove provided on the outer periphery of the drainage pipe, in the vicinity of the groove start and groove end, so as to be linear in the direction perpendicular to the direction of the fluid inside the drainage pipe. Inside, the locking portion side surface of the water stopper is locked to the straight portion.

  A flexible ring integrally formed with the arm portion is formed at the tip of the arm portion of the water stop cock by connecting the arm portion and the arm portion. It is integrally formed.

  One or a plurality of convex portions are formed on the drain pipe outer periphery and the ring inner periphery of the joint connection pipe, respectively, and the handle of the stop cock is rotated by hand during opening and closing operation of the stop cock. Then, the convex part of the stop cock gets over the convex part of the drain pipe so that the operator feels a click, and when the stop cock seals (closes) the drain pipe, The convex part of the outer periphery of the drain pipe is formed in a shape such that the ring does not bend against the inner periphery of the ring of the water stop cock.

  When the stop cock is in the open state, the ring is bent when a portion of the outer periphery of the ring that is about 90 degrees away from the locking portion is pushed toward the center of the ring with a finger or the like. Since the portion opens toward the outer periphery of the ring, the locking portion is separated from the lead groove, and the water stop cock can be removed from the drain pipe.

  The cross-sectional area of the portion of the shaft portion of the stop cock that is held in the drain pipe (cross section perpendicular to the longitudinal direction of the shaft portion) is the cross-sectional area of the internal space of the drain pipe (water drain) The cross-sectional area of the root portion of the stop cock shaft is formed to a size that closes the drain pipe tightly. ing.

  The portion of the shaft of the water stop cock that is held in the drain pipe is made to have a substantially cross-shaped column shape in another embodiment in order to improve drainage efficiency in the embodiment described later. It is formed to have a slit shape with a cross-shaped space on the cylinder, but it is only necessary to have a shape that is smaller than the size of the internal space of the drainage pipe and has good drainage efficiency. The shape need not be limited to this.

  The stop cock is formed with a knob portion integrally with the shaft portion of the stop cock. The knob portion has a shape in which various general tools (for example, a hexagon wrench, a spanner, a screwdriver, etc.) are fitted. A recess or groove is formed in the outer shape or the center of the shaft. In the embodiments to be described later, the outer shape and recess of the knob portion are indicated by a substantially hexagonal shape and the groove is indicated by a cross shape. However, the shape of the recess, groove and outer shape may be changed according to the tool to be used.

  Further, a finger hook portion extending in the outer peripheral direction of the knob portion is integrally formed with the knob portion of the water stop cock. In accordance with the rotation of the water stop cock, the position of the finger hook portion is also relatively rotated and the angle is changed. In the embodiment, the shape of the finger-hanging portion is represented by a plate shape, but the shape may be changed by forming a non-slip groove or attaching a warp to the tip of the finger-hanging portion depending on the use situation.

  The locking portion formed on the water stop cock is formed so as to be caught in the lead groove of the drain pipe, and in the state where the locking portion is caught in the lead groove, the knob portion of the water stop cock is By rotating, the locking portion relatively slides in the lead groove. As a result, the shaft portion of the water faucet moves between the branch portion and the tip portion of the water drain tube in the water drain tube while rotating.

  An O-ring for sealing the drainage pipe when attached to the drainage pipe is disposed at the shaft root portion of the water stop cock, and the installation position of the O-ring is slightly more than the O-ring. A wide groove is formed so that the O-ring moves slightly within the groove, and a deep groove is further formed at the bottom near the axis in the groove.

  The mounting position of the O-ring is the position where it enters the drain pipe when the stop cock is closed and cannot be seen from the outside of the drain pipe, and when the stop cock is open, the drain is drained. It is in a position where it can be seen outside the tube.

  Further, as shown in another embodiment, the groove is continuously extended from the end of the lead groove on the outer periphery of the drainage pipe of the joint connecting pipe to the outer periphery of the drainage pipe, and connected to the middle of the lead groove. Some of them are formed.

  The above-mentioned water stop cock and the joint connecting pipe provided with the water stop cock are materials having both flexibility and rigidity, such as synthetic resin, and the O-ring is an elastic material (for example, rubber, elastomer, or a mixture thereof) Stuff).

  Since this invention is comprised as mentioned above, there exists an effect described below.

  According to the invention of claim 1, when the water faucet body and the locking portion are integrally formed of synthetic resin or the like, the conventional water faucet (separate parts for preventing the water faucet and the water faucet from falling off) The number of parts is less than that required), and it is possible to create an inexpensive and light-weight one. In addition, by utilizing the bending properties of the resin, the ring with flexible arms and locking portions can be bent. In addition, since the water stop cock can be attached to the joint connection pipe with a single touch, there is an advantage that a special tool is not required and the work can be done easily and in a short time.

  According to the first aspect of the present invention, the shape of the groove end portion of the lead groove of the joint connecting pipe and the end portion of the locking portion of the water stopper that engages with the lead groove is a wedge shape that fits each other. When the locking part 28 reaches the end of the groove in the lead groove, the end of the locking part is in contact with the groove end part of the lead groove and is locked to each other. It becomes in a state and cannot come off. As described above, even when trying to turn the stop part of the stop cock with a strong force when closing the stop cock, the engaging part of the stop cock does not slip and come off from the lead groove of the joint connection pipe. Therefore, it is possible to prevent the stop cock from being accidentally detached or broken from the joint connection pipe. In addition, even if the arm part or ring formed integrally with the locking part is pulled in a direction that expands due to some external force, the locking part and the groove end part will not come off, so the stop cock is inadvertently connected to the joint It will not come off the tube.

  Similarly, the groove starting portion of the lead groove of the joint connecting pipe and the shape of the end of the stopper of the water faucet that engages with the lead groove are inclined so as to have a wedge shape that fits together. It is. For this reason, when the latching portion 28 reaches the groove start in the lead groove, the end of the latching portion comes into contact with and latches with the groove start portion of the lead groove, so that they are caught in each other and cannot be detached. As described above, even if the stop part of the stop cock is turned when the stop cock is opened, the engaging part of the stop cock does not slip and come off from the lead groove of the joint connection pipe. It is possible to prevent the faucet from being removed from the joint connecting pipe in preparation. In addition, even if the arm part or ring formed integrally with the locking part is pulled in a direction that spreads by some external force, the locking part and the groove start part do not come off, so that the water stop cock is not attached to the joint connection pipe. I won't miss it

  Since the locking portion of the water stopcock moves in a lead groove formed in a substantially spiral shape on the outer periphery of the pipe of the joint connecting pipe, a generally hemispherical shape is usually used for locking in the lead groove. However, since the locking portion of the water faucet according to the embodiment of the present invention is formed in a substantially square shape, the area in contact with the arm portion and the ring of the water faucet becomes wider and the strength is increased as compared with the round shape. The locking portion is broken from the arm portion or the ring and is less than the conventional product.

  As disclosed in the examples described later, when the lead groove formed in the joint connection pipe is formed in a double manner and the number of stop portions of the stop cock to be engaged with the lead groove is increased, the stop cock is connected to the joint connection pipe. It is possible to further increase the force of engaging the.

  According to the invention of claim 3 or 4, the water faucet of the present invention has a cross-section of the shaft of the water faucet with an O-ring for tightly closing the water faucet provided on the root side of the shaft of the water faucet. The shape was formed so that the cross-sectional area of the shaft was smaller than the cross-sectional area of the drainage pipe (the cross section perpendicular to the longitudinal direction of the drainage pipe). In the examples to be described later, the shaft is formed in a columnar shape having a substantially cross-shaped cross section or a cross-shaped slit shape in which one or more spaces are provided in a cylinder. Therefore, it is possible to discharge the fluid inside the pipe to the outside through the clearance between the drain pipe and the shaft part by simply rotating and shifting it without removing the stop cock completely from the drain pipe. Compared to, the resistance to contact the shaft with the fluid in the direction in which the fluid inside the drain pipe flows is less, so the fluid discharge flow rate to the outside of the drain pipe is increased per unit time. I was able to. As a result, water can be drained from the drain pipe efficiently, and the working time can be shortened.

In addition, straight sections are provided at both ends of the lead groove (the groove start and groove end portions) of the drain pipe of the joint connection pipe, and are formed in a straight line in a direction perpendicular to the direction in which the fluid in the drain pipe passes. Yes. The side surface of the straight portion of the lead groove is formed perpendicular to the outer periphery of the drainage pipe, and the side surface of the locking portion of the water stopper comes into contact with and locks so as not to move. For this reason, even when the pressing force from the fluid inside the drain pipe is applied to the stop cock, the stop cock locking part does not come off from the straight part at both ends of the lead groove, and it moves while being locked to the straight part. Absent. Therefore, keep the drain pipe tightly closed when the stop cock is closed, and prevent water leakage accidents and dropouts that occur when the stop cock loosens when pressure is applied from the fluid inside the pipe. Can do.
Similarly, even when the stop cock is opened, the drain plug can be drained without removing it from the joint connection pipe during draining work. There is no worry about losing.

  According to the invention of claim 5, the knob portion of the water faucet has a recess 26 formed in a substantially hexagonal shape, further formed with a cross groove 19, and the outer shape of the knob portion is a general tool such as a spanner, a wrench or a screwdriver. These tools can be used to open and close the faucet by turning the faucet using these tools, and it is possible to open and close the faucet even in tight places where human hands cannot enter It is.

  In addition, since one or more anti-slip grooves are formed in the finger hook of the stop cock, the hand is less slippery when opening and closing the stop cock by hand, making it even easier to use It has become.

According to the invention of claim 5, the finger hook portion extended from the knob portion of the water stop cock to the outer periphery of the knob portion is in accordance with the movement of the water stop cock when the stopper opening / closing operation, that is, turning the water stop cock. spin. In the embodiments described later, the stopper and the knob of the water faucet are integrally formed, and when the stopper moves in the lead groove of the drain pipe, the shaft and the knob of the water faucet are relative to each other. Since the lead groove angle and length are calculated so as to rotate about 90 degrees, the angle of the finger hook part changes by about 90 degrees between the shut-off state and the open state. Yes.
For this reason, the open / closed state of the stop cock can be discriminated at a glance depending on the position and angle of the finger hook, which is very convenient because it is possible to prevent forgetting to close the stop cock. In addition, since the drain pipe can be opened and closed with a stop cock just by rotating the knob part about 90 degrees, the opening and closing work is easier compared to the conventional product (screw fitting type) that required to turn the stop cock many times. It became easy.

  In the conventional product, an O-ring for sealing the drain pipe is arranged near the end of the stop cock. When the stop cock is attached to the drain pipe, the O-ring arranged on the stop cock is watered. It must be inserted to the deepest part in the extraction tube. If the operator can insert the stop cock straight into the drain pipe, there is no problem, but if the operator inserts the stop cock at an angle for reasons such as the work space being narrow, There is a drawback that the ring hits the inner wall of the drain pipe and the O-ring is worn and deteriorated by friction with the inner wall. However, according to the invention of claim 6, in the water stopcock of the present invention, the mounting position of the O-ring, that is, the groove is formed on the root side of the shaft. For this reason, the distance that the O-ring passes through the drain pipe becomes relatively short, and when the O-ring enters the drain pipe, the stop cock shaft is not the part from the tip to the front of the O-ring before that. Since it is in the drain pipe, the insertion angle of the stop cock becomes appropriate, deterioration due to wear of the O-ring can be reduced, and the opening / closing operation of the stop cock becomes easier. And since the axis | shaft (the part inserted in the drain pipe of a joint connection pipe) is formed long, when attached to a joint connection pipe, it does not rattle and remove.

  Furthermore, the O-ring cannot be seen because it is inserted into the drain pipe and the stop cock is closed, so that the O-ring is visible from the outside when it is open. Formed to come to. Thereby, the open / closed state of the stop cock can be recognized at a glance depending on whether or not the O-ring is visible. In addition, it is easier to discriminate when using an O-ring with a conspicuous color.

According to invention of Claim 6, the groove | channel which is a part which mounts O ring of a water stopcock is formed slightly wider than the width | variety of O ring, and also the deep groove is formed in the bottom part near the axis | shaft in a groove | channel. . When the stop cock is inserted into the drain pipe, the O-ring slides toward the side near the knob in the groove due to friction with the drain pipe inner wall, and comes into contact with the inner wall and groove of the drain pipe. Keep it sealed (closed).
When the stop cock is removed from the drain pipe, the O-ring slides in the groove due to friction with the inner wall of the drain pipe and moves to the shaft side in the groove. A deep groove is formed at the bottom of the groove on the shaft side. When the O-ring enters the deep groove, the contact area between the O-ring and the drainage pipe inner wall decreases.
Therefore, when removing the water stop cock, the friction between the O-ring and the drain pipe inner wall is reduced, and the resistance to the opening operation is reduced, so that the operator can open the plug with a little force.
When the O-ring is inserted again into the drain pipe, the O-ring slides again inside the groove again (by friction with the inner wall of the drain pipe) and smoothly slides closer to the knob portion. As described above, since the O-ring moves in the groove when the water faucet is put in and out of the drain pipe, there is little resistance to the opening and closing operation of the water drain pipe (inserting and removing the water faucet), and the operator has a little It is possible to open and close with the power of. In addition, if a lubricant such as grease is applied in the groove in advance, the drainage pipe can be opened and closed more smoothly.

  The joint connecting pipe of the conventional product has a shape in which the inner diameter of the pipe gradually decreases because the portion near the branching portion 7 in the drain channel 6 is tapered toward the center of the inner diameter of the pipe. It has become. Since the inside of the drainage flow path is sealed by the seal of the tapered portion and the stop cock O-ring, since the flow path shape is formed thinly at the tapered portion, the fluid is difficult to flow and the draining effect is bad. Since the joint connecting pipe of the present invention is formed widely by making the flow path in the drain pipe into a tube having the same inner diameter, the flow rate of the fluid can be increased as compared with the conventional product, and the drainage efficiency is further improved.

  The conventional stopcock has only the claw portion (corresponding to the locking portion in the embodiment of the present invention) to lock the stopcock to the lead groove of the joint connection pipe, but something hits the claw portion, etc. The external force is unexpectedly applied, and the claw portion may be bent and may be accidentally detached from the lead groove. According to the invention of claim 2, the water faucet of the embodiment of the present invention reinforces the locking portion by integrally forming the ring 21 with the locking portion, and the locking portion is subjected to an external force by applying some external force ( Since it is prevented from bending in the direction of the outer periphery of the ring, there is no fear that the locking portion will be inadvertently detached from the lead groove. As a result, it is possible to provide a highly reliable water stop cock that is free from fear of dropping off or being lost.

  According to the second aspect of the present invention, the ring of the water stop cock is crushed from the outside with the finger or the like in the vertical direction of the ring (the portion between the arm portion) while the drain pipe is opened. Push and bend it so that it swells in the lateral direction, and the arm part opens toward the outer periphery of the ring, and the locking part provided at the tip of the arm part comes off the lead groove of the drain pipe. It can be removed from the drain pipe.

  According to invention of Claim 2, the convex part is provided in the drain pipe outer periphery of the joint connection pipe, and the convex part is provided also in the ring inner side of the water stop cock. The convex part on the joint connecting pipe and the convex part on the inner side of the ring of the stop cock are attached to the convex part of the joint connecting pipe. It is formed at each position over the part. For this reason, in the opening / closing operation of the plug, a click feeling that occurs when the convex portion gets over the convex portion can be given, and the operator can feel the click feeling at the end of the opening / closing operation of the plug. For this reason, destruction of the water stop cock by turning too much etc. can be prevented.

  Also, in the closed state, the convex part of the joint connection pipe hits the inside of the stop cock ring, so even if the stop cock ring is pushed from the outside with a finger etc., the ring will not collapse and the arm part will not open in the outer circumferential direction of the ring . Thereby, since a latching | locking part does not remove | deviate from the inside of a lead groove | channel, a water stopcock also does not remove | deviate from a joint connection pipe.

  As shown in the examples described later, a flange portion extending toward the outer circumferential direction of the pipe is provided on the outer circumference of the pipe on the main body side of the joint connection pipe, and an appropriate distance from the flange portion on the outer circumference of the pipe And one or a plurality of plate pressing portions are provided at positions facing the brim portion. The flange portion is formed with one or a plurality of portions 44 that are further extended in the outer circumferential direction of the tube, and a convex portion 45 is formed at the tip of the extended portion 44. The formation location of the flange portion is not limited, and the flange portion is formed in accordance with the attachment location of the joint connection pipe (the location of the equipment casing and the attachment hole).

  When the joint connection pipe is attached to a device used such as a heat source machine, an attachment hole as shown in FIG. 21 is formed in advance in a fixing portion (sheet metal etc.) of the housing of the equipment used, and the joint connection pipe is formed in the attachment hole. Is first passed from the inlet side (the direction of the joint connecting pipe is as shown in FIG. 19). Subsequently, after passing the plate pressing portion, the joint connecting pipe is rotated 90 degrees in the direction of arrow D shown in FIG. Then, the fixing portion is sandwiched between the flange portion and the plate pressing portion, and the joint connecting pipe is locked to the fixing portion. Subsequently, when the convex portion 45 is fitted into the hole 39 formed in advance in the fixing portion, the joint connecting pipe is fixed and does not rotate. As described above, the joint connection pipe can be easily attached to the housing fixing portion of the equipment used without using connection parts such as tools and screws, and the working efficiency is further improved.

  According to the seventh aspect of the present invention, the lead groove provided on the outer periphery of the drain pipe of the joint connecting pipe is extended from the groove end portion, and the extension destination is connected in the middle of the lead groove. As a result, when the stop cock is turned too much to close it, the locking part of the stop cock does not come off from the lead groove, and the stop cock can be prevented from falling off or being lost. Since there is a step in the part that enters the extended part of the lead groove from the end of the groove, the operator's hand gets over the step and enters the extended part of the lead groove. Since the user feels the click feeling, the operator can notice that the operator is turning too much.

  Next, the form of one embodiment of the present invention (hereinafter referred to as “embodiment”) will be described in detail with reference to the drawings.

  FIG. 1 is a front view showing a joint connecting pipe 1 according to an embodiment of the present invention. The joint connecting pipe 1 has a single tubular shape, and has an inlet 2 serving as an inlet for fluid such as water at one end and an outlet 3 serving as an outlet for fluid at the other end. Each of the inflow port 2 and the outflow port 3 is formed so as to be used by being attached to various pipes. A branch portion 31 is provided midway between the inlet 2 and the outlet 3 of the joint connecting pipe 1, and a drain pipe 4 having a shape in which the pipe branches from the branch portion 31 is provided. The shape of the joint connecting pipe 1 as a whole is such a shape that the letter “T” is tilted 90 degrees sideways.

  The drain pipe 4 is a pipe for letting out the fluid inside the joint connection pipe at the time of draining work, and for holding the water stop cock 13. A lead groove 5 is formed on the outer peripheral surface portion of the drain pipe 4 so as to draw a loose spiral of about 45 degrees from the vicinity of the tip of the drain pipe 4 toward the branch portion 31. The lead groove 5 is for locking a locking portion 28 of a water stopcock 13 to be described later.

  Since the lead groove 5 has a large lead angle of approximately 45 degrees, the lead groove 5 can move over a long distance with less rotation of the water stopcock (compared to a conventional screw thread type). In this embodiment, two lead grooves are provided at intervals of 180 degrees, but it is desirable to provide two or more lead grooves in order to move smoothly. When a plurality are formed, the locking portion 28 of the water stopper 13 can be stably locked.

  FIG. 2 is a front view showing the water stop cock 13 to be used by being attached to the joint connecting pipe 1. (However, the O-ring 16 of the water faucet 13 is partly represented by a cut surface in order to make the details easier to see.) The water faucet 13 has a shaft portion 19 and a knob portion 14 formed integrally with the shaft portion. In order to reinforce by connecting the tips of the arm portions 20 to each other, the finger hook portion 15 extending from the knob portion, the arm portion 20 branched from the boundary between the shaft portion 19 and the knob portion 14 A groove 17 is formed near the base of the shaft portion (near the boundary between the knob portion 14) and an O-ring 16 attached to the groove 17 portion.

  FIG. 3 shows that the stop cock 13 is attached to the joint connecting pipe 1, that is, the shaft portion 19 of the stop cock 13 is inserted into the drain pipe 4 of the joint connecting pipe 1, and the locking portion 28 is led. A state of being locked in the groove 5 is shown. In order to attach the stop cock 13 to the drain pipe 4, the engaging portion 28 of the stop cock 13 is fitted into the insertion groove 10 of the drain pipe 4, and at the same time, the shaft portion 19 of the stop cock 13 is drained. Insert into tube 4. In this state, when the stop cock 13 is rotated in the direction of the lead groove with a strong force, the ring 21 of the stop cock 13 is deformed, and the locking portion 28 forms a wall that partitions between the insertion groove 10 and the lead groove 5. Get over and fit into the lead groove 5. The stop cock 13 is attached to the drain pipe 4 by the above method. 4 shows a state in which the stop cock 13 is rotated from the state of FIG. 3 and the drain pipe 4 of the joint connection pipe 1 is closed by the stop cock 13. Normally, when the joint connection pipe 1 is used, the drain pipe 4 is in a closed state. When it is desired to discharge the fluid inside the joint connection pipe 1 for inspection or the like, the water stop cock 13 is rotated to bring the drain pipe 4 into the open state shown in FIG.

  The locking portion 28 formed on the water stop cock 13 is formed so as to be hooked on the lead groove 5 of the drain pipe 4, and in a state where the locking portion 28 is hooked on the lead groove 5 in use. When the knob portion 14 of the water stop cock 13 is turned, the locking portion 28 relatively moves in the lead groove 5. As a result, the shaft portion 19 of the water stopcock 14 moves left and right (in the direction of arrow E shown in FIG. 3 and in the opposite direction) in the drain pipe 4 while rotating.

  FIG. 5 is an enlarged view of the main part of the right side view of FIG. The knob portion 14 of the water stopcock 13 has a substantially hexagonal outer shape, a substantially hexagonal concave portion 26 formed inside the shaft portion, and a cross groove 27 formed in the interior of the substantially hexagonal concave portion. Has been. This is a shape suitable for general tools such as various hexagonal wrench and screwdriver, and when opening and closing the stop cock 13, consideration is given so that operation using the tool can be performed. These shapes are not limited to the outer shape, the substantially hexagonal concave portion or the cross groove, but may be changed according to the tool to be used.

  In addition, one or more anti-slip grooves are formed in the finger hooking portion 15 of the knob portion 14 so that the workability is improved without slipping when operated by hand. In addition, as shown in FIG. 42, the outer shape of the knob portion 14 is formed in a substantially hexagonal shape, a hexagonal hole 26 is formed inside the shaft portion of the knob portion 14, and the hexagonal hole 26 is centered. A small hexagon was formed step by step. Thereby, the operation by the tool from the outside is possible, and the hexagonal hole 26 inside the shaft portion can be fitted with tools of various sizes.

  A groove 17 is provided at the base portion of the shaft portion 19 of the water stopcock 13 (near the boundary with the knob portion 14) so as to surround the outer periphery of the shaft. Deep grooves 18 are formed deeply. An O-ring 16 made of an elastic material such as various rubbers or elastomers or a mixture of two or more of them is mounted in the groove 17. It is desirable that the groove 17 is formed to be slightly wider than the width of the O-ring 16 to be mounted, and a lubricant such as grease is applied in the groove 17.

  43 and 44 are enlarged views of the main part showing the groove 17 of the water stop cock 13. FIG. 43 shows a state where the shaft part 19 of the water stop cock 13 is inserted from the open end of the water drain pipe 4 while the water drain pipe 4 is in the open state. Since the O-ring 16 is visible from the outside of the drain pipe 4, it can be determined that it is in the open state. When the shaft portion 19 of the water stopcock 13 is pushed into the drain pipe 4 from this state, the O-ring 16 is caused to friction from the inner wall of the drain pipe 4 to the groove 17 (the knob of the stopcock 13). 44 (the root side of the portion 14), as shown in FIG. FIG. 44 shows a state where the water stop cock 13 has completely entered the drain pipe 4 with the drain pipe 4 closed by the O-ring 16.

  6 is a rear view of FIG. 5 (only the stop cock 13 is shown). FIG. 7 is a cross-sectional view of FIG. 3, showing a state in which the stop cock is opened. FIG. 8 is a cross-sectional view of FIG. 4 and shows a state in which the stop cock is closed. The root portion of the shaft portion 19 of the water stopcock 13 (near the boundary with the knob portion 14) is formed in a cylindrical shape, and the outer periphery thereof is formed to a size that closes the internal space of the drain pipe 4 of the joint connecting pipe 1. . Further, the aforementioned groove 17 and deep groove 18 are formed in the cylindrical portion, and an O-ring 16 is attached. The internal space of the drain pipe 4 is sealed with an O-ring 16. As shown in FIG. 6, the tip end side of the shaft 19 is formed in a cross-shaped rib shape. FIG. 9 is an enlarged view of the water stop cock shown in FIG. 3, in which the O-ring is omitted to make the groove 17 and the deep groove 18 easier to see. s

FIG. 10 is the same diagram as FIG. 3 (when all the numbers and arrows are entered in FIG. 3, it becomes difficult to see the diagram, so it is shown in another diagram).
FIG. 14 is a right side view of FIG. 10, showing a state cut along the arrow HH and viewed in the direction opposite to the arrow H. FIG. In addition, the water stop cock 13 and the drain pipe 4 are represented with sectional drawing. In order to attach the water faucet to the drain pipe 4 of the joint connecting pipe 1, the water faucet locking portion 28 is brought into sliding contact with the mounting groove 10. 15 is rotated from the state of FIG. 14 in the direction of arrow C shown in FIG. 14 and the stopper 28 enters the lead groove 5 to lock the stopper 13 to the drain pipe 4. FIG. As in FIG. 14, the stop cock 13 and the drain pipe 4 are shown in a cross-sectional view.

  When a heat source machine or the like equipped with the joint connecting pipe 1 according to the embodiment of the present invention is normally used, the fluid entering the joint connecting pipe 1 from the inlet 2 is in the direction of arrow A shown in FIGS. And flows out from the outlet 3. Of these, the fluid that has flowed into the drain pipe 4 via the branch part 31 has the O-ring 16 at the root of the shaft part 19 of the stop cock 13 completely sealed inside the drain pipe 4. It cannot flow out from the drain pipe 4 to the outside, and finally flows out to the outlet 3 and flows out of the joint connecting pipe 1.

  13 is a cross-sectional view (enlarged main part) of the water stopcock 13 shown in FIG. The shaft 19 portion and the knob portion 14 are omitted. A locking portion 28 is formed in a convex shape on the inner peripheral side of the ring 21 formed by connecting the arm portion 20 of the water stopcock 13 and the tip of the arm portion 20.

  FIG. 11 is a cross-sectional view taken along the line G-G in FIG. 4 and shows a state in which the stop cock 13 is inserted into the drain pipe 4 and the drain pipe 4 is closed. The locking portion 28 is formed in a convex shape on the inner peripheral side of the ring 21 of the water stopper 13, and the end portions 29 and 29 of the locking portion 28 are formed in a wedge shape. The groove end 8 of the lead groove 5 of the drain pipe 4 is also formed in a wedge shape that engages with the end portion 29. When the stop cock 13 is closed, the end portion 29 is firmly locked to the groove end 8, so that it cannot be further rotated in the closing direction (the direction opposite to the arrow B shown in FIG. 11), and the arm portion 20 is also outside. It will not open in the direction of the ring 21 outer periphery.

  When the water faucet 13 is rotated in the direction of arrow B shown in FIG. 11 from the state of FIG. 11, the locking portion 28 moves from the groove end 8 to the groove start 9 side in the lead groove 5 to the state shown in FIG. The O-ring 16 at the root of the stop cock 13 exits from the drain pipe 4. Thus, since the sealed state by the O-ring 16 is released, the drain pipe 4 is opened. The fluid in the joint connecting pipe 1 passes through the branch port 31 from the inflow port 2, passes through the drain pipe 4 in the direction of arrow E shown in FIGS. 7 and 8, and the shaft 19 of the drain pipe 4 and the stop cock 13. It passes through the gap with the tip portion and flows out from the open end (that is, the outlet) of the drain pipe 4. When draining the fluid outside the drain pipe, the drain pipe 4 has a circular shape with a constant diameter inside, and the tip of the shaft 19 has a cross-shaped cross section so that the resistance to the fluid is reduced as much as possible. It was formed in a columnar shape.

  FIG. 15 is a view showing a state where the drain pipe 4 is opened. The groove start 9 of the lead groove 5 is formed in a wedge shape that engages with the end 29 of the water stopcock 13, and when the waterstop 13 is opened, the end 29 is firmly locked to the groove start 9. For this reason, no further rotation is possible in the direction of opening (the direction opposite to the arrow C shown in FIG. 14), and the arm 20 is prevented from opening outward (in the direction of the outer periphery of the ring 21).

  FIG. 17 is an enlarged view of a main part of the drain pipe 4 and the stop cock 13, and is a cross-sectional view showing a state in which the stop cock 13 closes the drain pipe 4. The shaft portion 19 of the water stopcock 13 receives a pressing force in the direction of arrow E shown in FIG. 17 from the fluid inside the drain pipe 4. Since it is locked to the side surface of the straight portion 7, it does not move. Therefore, the stop cock 13 keeps the state where the drain pipe 4 is closed.

  Similarly, when the stop cock 13 opens the drain pipe 4, the shaft portion 19 of the stop cock 13 is pressed from the fluid inside the drain pipe 4 in the direction of arrow E shown in FIG. 3. However, the water faucet 13 does not move because the side surface 50 of the locking portion 28 is locked to the side surface of the straight portion 6 of the lead groove 5. Further, the end portion 29 of the locking portion 28 is locked to the groove start 9. As described above, the stop cock 13 is in the open state, and even if the pressing force from the fluid inside the drain pipe 4 is received, the stop cock 13 keeps the drain pipe 4 open, and the drain pipe It will not drop out of 4.

  As shown in FIGS. 1, 11, and 12, a convex portion 12 is formed on the outer periphery of the drain pipe 4, and a convex portion 24 is formed on the inner peripheral side of the ring 21 of the water stopcock 13. When the drain pipe 4 is opened / closed by the stop cock 13, the convex part 24 gets over the convex part 12 as the stop cock 13 rotates, so that the operator who operates the stop cock 13 can receive it. A click feeling when the convex part 24 gets over the convex part 12 is transmitted.

  When the drain pipe 4 is changed from the open state to the closed state, the stop cock 13 is rotated (that is, the state shown in FIG. 12 is changed to the state shown in FIG. 11). The engaging portion 28 enters the straight portion 7 on the groove end 8 side, and at this time, the convex portion 24 is formed at a position over the convex portion 12. Thereby, when the plugging operation is performed, the click feeling that the convex portion 24 has overcome the convex portion 12 is transmitted to the hand, and thus it can be seen that the locking portion 28 has entered the straight portion 7. From the above, since the operator knows that the locking portion 28 has entered the straight portion 7, it can be seen that the closing operation has been completed. Therefore, it is possible to prevent the stop cock 13 from being rotated too much during the closing operation and destroyed, or the stop cock from slipping off the drain pipe 4.

  When the stop cock 13 attached to the drain pipe 4 is removed, the stop cock 13 is first opened (as shown in FIG. 3 and FIG. 15), and the circle is formed from the outer peripheral side of the ring 21 of the stop cock 13. When the ring 21 is pushed and deformed so that the ring 21 swells in the lateral direction by pushing the part between the connection parts of the ring 21 and the arm part 20 with a finger or the like so as to crush the ring-shaped ring 21 (the stop cock 13 is synthesized) Formed of a material having both rigidity and flexibility, such as resin), the arm portion 20 bends and opens toward the outer periphery of the ring 21, and the locking portion 28 provided at the tip of the arm portion 20 drains water. The lead groove of the tube 4 comes off. When the water stopcock 13 is rotated from this state (in the direction opposite to the arrow C shown in FIG. 14), the engaging portion 28 enters the mounting groove 10 and becomes the state shown in FIG. If the ring 21 is pulled to the near side (arrow E direction shown in FIG. 3) as it is. Since the shaft part 19 is detached from the drain plug 4, the stop cock 13 can be removed from the drain pipe 4. When the finger is released, the ring 21 is elastically restored and returns to its original shape.

The locking portion 28 formed on the water stop cock 13 is formed so as to be hooked on the lead groove 5 of the drain pipe 4, and in the state where the locking portion 28 is hooked on the lead groove 5, By rotating the knob portion 14 of the water tap 13, the locking portion 28 relatively slides in the lead groove 5. As a result, the shaft portion 19 of the water stopcock 13 moves relatively between the branch portion 31 and the tip end portion of the drainage pipe 4 in the drainage pipe 4 while rotating (in the direction of arrow E shown in FIG. 3). Move in the opposite direction). The finger hook portion 15 extending from the knob portion 14 of the stop cock 13 toward the outer periphery of the knob portion 14 coincides with the movement of the stop cock 13 when the stopper opening / closing operation is performed, that is, when the stop cock 13 is turned. Turn around. Since the locking portion 28 and the knob portion 14 of the water stopper 13 are integrally formed, when the locking portion 28 moves in the lead groove 5, the shaft portion 19 and the knob portion 14 of the water stopper 13 are relatively moved. Since the angle and length of the lead groove 5 are calculated so as to rotate about 90 degrees each time, the angle of the finger hook portion 15 changes about 90 degrees between the closed state and the opened state of the water stopcock 13. It has become.
For this reason, the open / close state of the drain pipe 4 by the stop cock 13 can be determined at a glance by the position and angle of the finger hook 15, and forgetting to close the stop cock 13 can also be prevented.

  16 is a cross-sectional view taken along line MM in FIG. A place where a pipe 34 of a device such as a heat source machine is inserted and connected to the outlet 3 of the joint connecting pipe 1 is shown. Since the inner diameter of the flow path 30 and the inner diameter of the pipe 34 to be connected are formed to be the same, the pressure loss of the internal fluid can be reduced.

  As shown in FIGS. 7 and 8, the drain pipe 4 is formed in a circular tube having a constant inner diameter. When the drain pipe 4 is closed with the stop cock 13, the O-ring 16 is tightly closed to the inner surface (inner circumference) of the drain pipe 4. The sealing state of the O-ring does not change depending on the fitting state of the stop cock, and it is possible to keep the sealing state.

  The joint stopper 11 of the joint connection pipe 1 shown in FIGS. 1, 3, 4, etc. is provided with a hole or a recess in which the stopper 11 can be inserted in a housing of the equipment to which the joint connection pipe 1 is attached. If the stopper 11 is fitted into the hole or the depression and fixed to the housing, the joint connecting pipe 1 is not unintentionally rotated during use and is not detached from the equipment piping.

  18 and 19 are front views of a second embodiment according to the joint connecting pipe of the present invention. Although the shape is substantially the same as the joint connection pipe 1 of Example 1, the collar part 36 formed in the outer periphery of the joint connection pipe 1, the board presser 35 formed in the position facing this collar part 36, and the collar part of A vent portion 44 formed by extending a part thereof and a fixed convex portion 45 formed in a convex shape at the tip of the vent portion are different from the first embodiment. The other parts are the same in shape and function as the joint connecting pipe 1 of the first embodiment, and are the same as disclosed in the first embodiment, and therefore are not described here to avoid duplication of explanation.

  FIG. 19 is a plan view of FIG. FIG. 20 is a diagram showing a place where the joint connecting pipe 1 (of the second embodiment) is attached to a housing 40 of a device used such as a heat source machine. FIG. 21 shows a part of the housing 40 of the device used, and the housing 40 has a mounting hole 38 and a fixing hole 39 formed in advance.

  In order to attach the joint connecting pipe 1 to the casing 40 of the equipment used such as a heat source machine, the joint connecting pipe 1 in the state of FIG. 19 is inserted into the mounting hole 38 of the casing 40 from the inlet 2 side, and the plate press 35 Passes through the attachment hole 38, the joint connecting pipe 1 is rotated about 90 degrees in the direction of arrow D shown in FIG. Then, the end of the mounting hole 38 of the housing 40 enters between the plate retainer 35 and the flange portion 36, and the joint connecting pipe 1 is engaged with the housing 40 by the plate retainer 35 and the flange portion 36, so that And become fixed. Further, the fixing convex portion 45 at the tip of the vent portion 44 is inserted into the fixing hole 39 and fixed so that the joint connecting pipe 1 does not rotate. As described above, the joint connecting pipe 1 can be easily attached to the equipment without using a tool or the like.

  FIG. 23 is a front view showing another embodiment of the water stop cock of the present invention, and FIG. 22 is a front view showing another embodiment of the joint connecting pipe provided with the water stop cock. 24 is a left side view of FIG. If the lead groove 5 formed in the drain pipe 4 of the joint connecting pipe 1 is formed in a double manner and the number of the locking portions 28 of the water stopper 13 locked to the lead groove 5 is increased accordingly, It is possible to further increase the force with which the joint 13 is locked to the joint connecting pipe 1 and increase the force with which the water stop cock 13 tightly plugs the drain pipe 4. The stopper portion 14 of the water stopcock is not limited to the shape of the first embodiment, and may be changed according to the device to be used. Moreover, the shape of the shaft part 19 of the water stop cock 13 forms one or some groove | channels in the cylindrical shaft part 19, and makes it the flow path for draining. In this embodiment, a plurality of grooves are formed to form a cross-shaped slit shape. Other parts are the same as in the first embodiment. Other figures and explanations are omitted to avoid duplication of explanation.

FIG. 25 is a front view showing another embodiment of the water stop cock of the present invention and a joint connecting pipe provided with the water stop cock, FIG. 26 is a right side view of FIG. 25, and FIG. It is arrow sectional drawing. The knob portion 14 of the water stop cock is not limited to the shape of the first embodiment, and may be changed according to the device to be used. In this embodiment, a plurality of anti-slip grooves are formed on the cylindrical side surface. Further, an O-ring is arranged at the boundary between the shaft part 19 and the knob part 14, and the pipe of the drainage pipe 4 is formed at the outlet (tip) portion on the inner peripheral side of the pipe toward the outlet (tip) direction. The taper was applied so that the thickness of the tape became thinner. In the case of the present embodiment, when the water stopcock 13 is attached to the drain pipe 4, the O ring 16 is abutted against the tapered portion at the outlet end of the drain pipe 4, and the knob portion 14 and the drain pipe are provided. The O-ring 16 is not inserted into the drain pipe 4 because the O-ring 16 is sandwiched and pressed at the tip of the 4 to form a tightly plugged state. Therefore, the lubricant for moving the O-ring 16 in the drain pipe 4 is not required as in the other embodiments, so that it is not necessary to apply the lubricant and the cost thereof.
In this embodiment, the shape of the shaft 19 is the same as in the third embodiment, that is, a shape in which a space is provided in a cylinder. However, the shaft shape of the first embodiment may be adopted, and the drain pipe Of course, other shapes may be used as long as the condition that the shape is smaller than the inner space of 4 and the shape has good drainage efficiency is satisfied. Other parts are the same as in the first embodiment. Other figures and explanations are omitted to avoid duplication of explanation.

  FIG. 28 is a view showing another embodiment according to the joint connecting pipe of the present invention. It is the bottom view which looked at the joint connection pipe from the bottom. The outer end of the drainage pipe 4 of the joint connection pipe 1 is not formed with the groove end 8 in the lead groove 5, but is extended over the outer periphery of the drainage pipe and connected to the middle of the lead groove. Other parts are the same as in the first embodiment. Other figures and explanations are omitted to avoid duplication of explanation.

  29 is a front view showing another embodiment of the joint connecting pipe of the present invention, FIG. 30 is a plan view of FIG. 29, FIG. 31 is a bottom view of FIG. 29, and FIG. 32 is a joint connecting pipe shown in FIGS. FIG. 33 is a right side view of FIG. The left side appears symmetrically with FIG. The joint connecting pipe according to the embodiment of the present invention may be formed by forming a plurality of pipe portions through which a fluid passes, and these pipes may be connected by the brim portion 36. At this time, it is preferable to form holes 51 and 52 through which the screws and the like for attaching to the device are passed through the brim portion 36.

  Further, as shown in FIG. 40 and FIG. 41, the flange portion 36 is provided with a vent portion 60. In this way, even after the joint connection pipe of this embodiment is attached to a plurality of pipes, even if some external force is applied to the pipes and they are displaced from their original positions, the vent portion 60 is twisted or expanded, and the deviation is caused. Since it eliminates, the brim part 36 warps and prevents the joint connecting pipe from coming off the pipe. Further, the vent portion 60 is not limited to the substantially U-shaped shape shown in the figure, and may be formed thinner than other portions like a thin plate portion 62 shown in FIG.

  As described above, the joint stop pipe for the joint connection pipe according to the embodiment of the present invention and the joint connection pipe provided with the stop cock can obtain the effects described in the “Effects of the Invention” column.

It is a front view showing the joint connection pipe concerning the example of the present invention. It is a front view showing the water stopcock which concerns on this invention Example. It is a front view which shows the place which attached the water stop cock of FIG. 2 to the joint connection pipe | tube of FIG. 1, and has a drain pipe in the open state. It is a front view which shows the place which attached the water stop cock of FIG. 2 to the joint connection pipe | tube of FIG. FIG. 4 is an enlarged view of the right side main part (only the stop cock) of FIG. 3. FIG. 6 is a rear view of FIG. 5. FIG. 4 is a cross-sectional view of FIG. 3. FIG. 5 is a cross-sectional view of FIG. 4. It is a figure showing the water stop cock which concerns on this invention Example. It is a front view showing the joint connection pipe concerning the example of the present invention. It is the same figure as FIG. It is GG sectional drawing of FIG. It is HH arrow sectional drawing of FIG. FIG. 5 is a cross-sectional view taken along line FF in FIG. FIG. 11 is a cross-sectional view taken along the line H-H in FIG. FIG. 5 is a cross-sectional view taken along the line GG in FIG. It is the MM arrow sectional drawing of FIG. 1, and represents the state which attached the joint connection pipe to arbitrary piping. It is a principal part expanded sectional view of FIG. It is a front view showing the joint connection pipe concerning the 2nd example of the present invention. It is a top view of FIG. It is a figure which shows the state which attached the joint connection pipe concerning 2nd Example of this invention to the housing | casing of an apparatus. It is a principal part enlarged view of the apparatus which attaches the joint connection pipe which concerns on 2nd Example of this invention. It is a front view which shows the joint connection pipe | tube which concerns on this invention 3rd Example. It is a front view which shows the water stop cock which concerns on this invention 3rd Example. It is a left view of FIG. It is a front view which shows the water stop cock which concerns on 4th Example of this invention, and the joint connection pipe provided with this water stop cock. It is a right view of FIG. It is JJ sectional drawing of FIG. It is a bottom view showing the joint connection pipe concerning the 5th example of the present invention. It is a front view showing the joint connection pipe concerning the 6th example of the present invention. FIG. 30 is a plan view of FIG. 29. FIG. 30 is a bottom view of FIG. 29. FIG. 30 is a perspective view of the joint connecting pipe shown in FIG. 29. FIG. 30 is a right side view of FIG. 29. It is a front view which shows the conventional coupling connection officer. FIG. 35 is a perspective view of FIG. 34 showing a conventional joint connector. FIG. 35 is a right side view of FIG. 34. It is KK sectional drawing of FIG. It is sectional drawing which shows the state which attached the water stop cock to the conventional joint connection officer shown in FIG. It is sectional drawing which shows the state which attached the water stop cock to the conventional joint connection officer shown in FIG. 37, and was made into the open state. It is a figure which shows the coupling connector which concerns on 6th Example of this invention. It is a figure showing other Examples of the joint connection pipe concerning the present invention. It is a figure showing the other Example of the water stop cock which concerns on this invention. It is a principal part expanded sectional view of the groove | channel of the water stop cock which concerns on this invention. It is a principal part expanded sectional view of the groove | channel of the water stop cock which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint connection pipe 2 Inlet 3 Outlet 4 Drain pipe 5 Lead groove 6 Straight part 7 Straight part 8 Groove end 9 Groove start 10 Insertion groove 11 Anti-rotation convex part 12 Convex part 13 Water stop cock 14 Knob part 15 Finger hook Portion 16 O-ring 17 Groove 18 Deep groove 19 Shaft 20 Arm portion 21 Ring 22 Rib 23 Rib 24 Protruding portion 25 Non-slip groove 26 Recessed portion 27 Cross groove 28 Locking portion 29 End portion 31 Branching portion 32 Depth portion 33 Taper 35 Plate retainer 36 Portion 37 clearance 38 mounting hole 39 hole 40 fixing member 41 shaft 42 extension portion 44 vent portion 45 fixing boss 46 taper 50 side surface 60 vent portion 62 thin wall portion 81 stop cock 82 joint connecting pipe 83 screw portion 84 screw portion

Claims (7)

    Used in heat source systems, etc., pipes that connect externally supplied water, hot water, antifreeze, fluid heat transfer medium or steam, etc., joint connection pipes, and fluid inside the joint connection pipes outside For the purpose of taking out the water, it is used for the drain pipe formed integrally (continuously) with the joint connecting pipe, and is a stop cock for making the inside of the drain pipe sealed. One or a plurality of flexible arm portions formed with one or a plurality of locking portions to be attached to the joint connection pipe are formed, and one or a plurality of the locking portions are formed on the outer periphery of the drain pipe. By engaging with the lead groove, the water stop cock is held in the drain pipe, and the lead groove has a lead angle so that the water stop cock can be closed and opened with a small rotation. The both ends of the lead groove and the end of the locking portion of the water stopcock are locked with each other. Joint connecting tube equipped with a stopcock and 該止 faucet, characterized in that formed in earthenware pots wedge shape.     A flexible ring integrally formed with the arm portion is formed at the distal end of the arm portion of the water stop cock so as to connect the arm portion and the arm portion. One or more protrusions are formed on the inner side of the ring, and when the stop cock is opened and closed, the knob of the stop cock is rotated by hand and the protrusion of the stop cock is When the water faucet seals the drain pipe, the convex part on the outer periphery of the drain pipe hits the inner circumference of the ring of the water faucet. The shape of the ring does not bend, and the ring is bent when the part of the outer periphery of the ring that is about 90 degrees away from the locking part is pushed toward the center of the ring by hand, and the locking part is separated from the lead groove. The stop cock according to claim 1, and a joint connecting pipe provided with the stop cock.     The cross-sectional area of the vertical portion of the shaft portion of the water stop cock held in the drain pipe is perpendicular to the longitudinal direction of the drain pipe, and is smaller than the sectional area of the internal space of the drain pipe. In the root part of the stop cock shaft part, it is formed in a size that closes the inside of the drain pipe tightly, and even if the stop cock is not completely removed from the drain pipe, The joint connecting pipe according to claim 1, wherein the fluid can be discharged.     The tip end side held in the drain pipe of the stop cock shaft portion is formed in a substantially cross-shaped columnar shape or a slit shape in which one or more spaces are provided in a cylinder. The joint connection pipe according to 2 or 3.     The stop cock is formed with a knob part integrally with the shaft part of the stop cock. The knob part has an outer shape that fits with a general tool, or a recess or groove in the center part of the shaft part. And a finger hook portion extending from the knob portion toward the outer periphery of the knob portion is also formed, and the angle of the position of the finger hook portion varies depending on the sealing / opening state of the stop cock, A stopcock according to any one of claims 1 to 4, and a joint connecting pipe provided with the stopcock.     An O-ring for placing the drainage pipe in a tightly sealed state when attached to the drainage pipe is disposed at the shaft root portion of the stopcock. When the drain pipe is sealed, the O-ring is not visible, and when the stop cock is open, the O-ring is visible, and the O-ring is attached at the bottom with a deep groove. The fitting connecting pipe provided with the water stop cock according to any one of claims 1 to 5, wherein a groove having a size slightly larger than the thickness of the O-ring is provided. When the tip of the drain pipe outer circumference extending from the groove end portion of the lead groove is connected to the middle of the lead groove and turned too much to close the water stopper, The water stop cock according to any one of claims 1 to 6, and a joint connecting pipe including the water stop cock, wherein the locking portion does not come off from the lead groove.

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