JP2006520456A - Fluid coupling - Google Patents

Abstract

The fluid coupling 10 for connecting the fluid supply pipe 14 and the hose 12 is provided. The fluid coupling 10 includes a coupling body 16 and a clamping device 18. The main body 16 is provided with a passage connected from the pipe 14 to the hose 12. The clamping device 18 clamps between the main body 16 and the end of the tube 14. The main body 16 includes a packing 22, a housing 20, and an annular lid 24.

Description

  The present invention relates to a fluid coupling, and more particularly to a fluid coupling used for connecting a hose or the like to a fluid supply pipe such as a faucet.

When connecting a hose to a faucet, the hose is usually inserted directly into the end of the faucet. However, a separate joint is used for a connection that is reliable and robust and maintains hermeticity. For example, when a hose connected to a washing machine is connected to a faucet, a joint that can withstand a water pressure of 17.5 kgf / cm ² is used.

  The conventional water supply pipe joint for this purpose is designed to be fastened to the faucet by tightening tightening screws from four directions when the joint is joined to the faucet. Therefore, the fixing operation is inconvenient, and if the operation is performed incorrectly, the sealing performance is not maintained and the problem of water leakage is likely to occur. Moreover, the conventional water supply pipe joint is the structure which maintains a sealing performance by making it closely_contact | adhere with the end of a faucet using a flat annular packing. However, such a configuration makes it difficult to maintain the sealing performance when the pressing force pressing the packing becomes weak or when an uneven force distribution occurs. In order to overcome such a problem, although a water supply pipe joint having a packing configuration fitted to the end of the faucet has been proposed, the connection with the faucet is still inconvenient and the sealing performance tends to be inferior. It was.

  The present invention has been made in view of the above-described problems, and provides a water supply pipe joint in which a fluid supply pipe and a hose are easily connected and a good sealing performance is maintained, and a method for manufacturing the same. With the goal.

  Another object of the present invention is to provide a water supply pipe joint including a clamp device that can be easily tightened by operation of a lever and is strongly coupled to the water supply pipe.

  It is another object of the present invention to provide a water supply pipe joint and a method of manufacturing the same, in which the coupling structure between the packing into which the end of the water supply pipe is inserted and the clamp device is improved.

  Another object is to provide a water supply pipe joint with an improved hose coupling structure.

  It is another object of the present invention to provide a water supply pipe joint including a clamp device that is easily tightened by the operation of two levers and is strongly coupled to the water supply pipe.

  It is still another object of the present invention to provide a water supply pipe joint provided with a clamp device that can cope with various outer diameters or large outer diameters of water supply pipes.

  To achieve the above object, according to one aspect of the present invention, a fluid coupling according to the present invention is coupled to the end of a fluid supply pipe to connect the hose with the fluid supply pipe so that the fluid flow is extended. A fluid coupling, comprising a connection body to which a hose is coupled and a fluid flow passage is provided from the fluid supply pipe to the hose, and a clamp device for fixing the connection body to the end of the fluid supply pipe, The connecting body includes a body into which the end of the fluid supply pipe is inserted as a packing for maintaining a seal when connected to the fluid supply pipe, and a cover flange that extends substantially horizontally from the top of the body. And a packing provided with a receiving flange positioned at the lower part of the cover flange. And a housing having a hose coupling portion to which the hose is coupled, and an annular lid that covers at least a part of the upper portion and the periphery of the cover flange of the packing, and the clamping device includes the annular A tightening ring having a first groove provided around the inner peripheral surface so that a cover flange and a receiving flange covering the lid are inserted, and having a jaw meshing with the end of the fluid supply end; And a clamping device connected to the ring and adapted to engage the fluid supply pipe with a jaw of the clamping ring.

  The annular lid includes a rim that covers the upper surface of the cover flange, the periphery of the cover flange, and the lower surface of the receiving flange, and an upper flange and a lower flange that are folded back from the rim. In the first groove of the clamping ring, the upper surface and the lower surface with which the upper flange and the lower flange of the annular lid come into contact may be horizontal. In the first groove of the tightening ring, at least one of an upper surface and a lower surface with which the upper flange and the lower flange of the annular lid abut may be an inclined surface. Further, the first groove of the tightening ring may be formed such that the upper surface and the lower surface with which the upper flange and the lower flange of the annular lid abut each other are inclined surfaces.

  In addition, the annular lid includes a rim and an upper flange that is folded and extended from the rim so as to cover the upper surface of the cover flange and the periphery of the cover flange, whereby the lower surface of the receiving flange is exposed. The annular lid is in contact with the upper surface of the first groove of the clamping ring, and the receiving flange is in contact with the lower surface. The cover flange may have a peripheral edge extending downward around the cover flange.

  The hose connecting portion surrounds the hose connecting end connected to the hose, the outside of the hose inserted outside the hose connecting end, a collet having legs, and the collet. A cap for pressing the leg of the collet toward the hose. You may equip the inner surface of the leg part of the said collet with the pressing protrusion which protruded sharply so that a hose might be pressed.

  The tightening ring has a pair of semicircular supports that are coupled to each other, each semicircular support being provided with a second groove above the first groove, and the tightening ring, A pair of jaws are respectively fitted in the second grooves of the semicircular support, and the tightening device couples and tightens the semicircular supports. One end of the pair of semicircular supports may be connected to a hinge pin, and the other end may be connected by a tightening device. The tightening device includes a lever mechanism, and the lever mechanism includes a bolt that passes between the other ends of the pair of semicircular supports, a nut that is screwed to the bolt, and a head of the bolt. And a lever hinged to the part.

  According to another aspect of the present invention, there is provided a method for manufacturing a fluid coupling according to the present invention, comprising: an annular lid having one of an upper flange and a lower flange folded inward from one end of the rim and the rim. A step of preparing a material, a step of positioning the cover flange and the receiving flange on the inner side of the annular lid body, and an end portion of the rim being folded inwardly to deform the other of the upper flange and the lower flange. The cover flange and the receiving flange are covered with the annular lid body. Further, in the step of forming the other one of the upper flange and the lower flange, the plurality of side punches that move in the horizontal direction are moved and formed.

  Also, a fluid coupling coupled to the end of the fluid supply pipe to connect the hose with the fluid supply pipe so that the fluid flow is extended, and the hose is coupled to the fluid from the fluid supply pipe to the hose. A connection main body provided with a flow passage and having a flange portion at an upper portion thereof, and a clamp device for fixing the connection main body to an end of a fluid supply pipe, wherein the clamp device is inserted into the flange portion. A first groove is provided around the inner peripheral surface, and a clamping ring having a jaw that meshes with the end of the fluid supply end, and is coupled to the clamping ring, and the clamping ring meshes with the fluid supply pipe A clamping lever mechanism adapted to do so, wherein the lever mechanism is provided with a fluid coupling having two levers.

  The clamping ring has a pair of semicircular supports coupled to each other, each semicircular support being provided with a second groove above the first groove, and the clamping ring. Has a pair of jaws which are respectively fitted in the second grooves of the semicircular support, and the tightening lever mechanism couples and tightens the semicircular supports. One end of the pair of semicircular supports may be connected to a hinge pin, and the other end may be connected by a tightening lever mechanism. The tightening lever mechanism may include a connecting rod that penetrates one end of the semicircular support and two levers that are rotatably coupled to both ends of the connecting rod. The connecting rod may include a pair of connecting pins each having a head portion and a leg portion, and a tightening structure provided between the leg portions.

  In addition, there are two tightening lever mechanisms that connect between the ends of the pair of semicircular supports, and each lever mechanism passes between the lever and the ends of the pair of semicircular supports. One end portion is supported so as not to be pulled out, and the other end portion is provided with a connecting pin having a head portion hinged to the lever. The connection pin may include a bolt having a head and a nut connected so as not to be detached from one end of the support.

  The lever has a head and a handle, a groove is provided in the center of the lever, the head of the connecting pin is inserted into the groove, and the head of the lever and the head of the connecting pin And a hinge pin that passes through the section.

  According to still another aspect of the present invention, in the method of manufacturing a fluid coupling according to the present invention, a step of inserting a head of a connecting pin into a groove provided in the head of the lever, and the hinge pin are combined. The lever includes a step of passing through the head of the lever and the head of the connecting pin, and a step of pressing with a punch so that at least one end of the hinge pin is plastically deformed.

  In the fluid coupling according to the present invention, the fluid supply pipe and the connection hose are easily connected and the sealing performance is sufficiently maintained. Specifically, since the clamp device is provided, it can be easily tightened by the operation of the lever and can be strongly coupled to the water supply pipe. The sealing structure is further improved by improving the coupling structure between the packing into which the end of the water pipe is inserted and the clamping device. Can also respond. In addition, the hose coupling structure is improved so that the hose can be easily connected and the sealing performance is sufficiently maintained.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3, a water supply pipe joint 10 according to a first embodiment of the present invention includes a connection body 16 that forms a water passage between a hose 12 and a faucet 14 of the water supply pipe, A clamp device 18 is provided which is coupled to the faucet 14 so that the connection body 16 is held in its original position.

  The connection body 16 includes a housing 20, a packing 22, and an annular lid 24. The connection body 16 includes a collet 26 and a cap 28 for firmly connecting the hose 12. The housing 20 has a substantially cylindrical shape, and a passage hole 30 through which water passes is provided between the faucet 14 and the hose 12 at the center thereof. The housing 20 has an upper packing seat 32 and a lower hose connection 34. The packing seat 32 is configured such that the packing 22 is seated above the passage hole 30. For this reason, the housing 20 has a cylindrical outer wall 36 extending in the vertical direction so as to have a larger inner diameter than the passage hole 30 and to form a packing insertion space 35. At the upper end of the outer wall 36, a receiving flange 38 is provided facing outward. Concave and convex portions 39 are formed on the outer surface below the outer wall 36 so as to be easily grasped by hand. In addition, an inner wall 40 having a low height is provided in the packing insertion space 35 inside the outer wall 36. The inner surface of the inner wall 40 communicates with the passage hole 30, and at the connecting portion with the passage hole 30, the inner diameter expands to become a taper and extends upward, and then extends vertically upward. 40 has an expanded inner diameter compared to the passage hole 30.

  A male screw 42 is provided at the hose connecting portion 34, which is the lower portion of the housing 20, so that a cap 28 described later is screwed. The housing 20 is provided with a hose insertion end 44 that extends below a portion where the male screw is formed. The hose insertion end 44 has a tapered surface 46 that is tapered so that the outer diameter gradually increases from the end toward the upper side so that the hose 12 can be easily inserted when the hose 12 is expanded. Is provided with a locking step 48 formed by retracting inward from the tapered surface. The housing 20 is manufactured by injection molding of plastic resin (preferably engineering plastic).

  2 and 3, the packing 22 includes a substantially funnel-shaped body 50 and a cover flange 52 formed by surrounding the upper portion of the body 50 in the circumferential direction. Yes. The packing 22 is preferably made of a rubber material having elasticity. The thickness of the funnel-shaped body 50 and the inclination of the inner surface are determined so that when the faucet 14 is inserted into the body 50, the sealing property required for packing is obtained by deformation as shown in FIG. Those skilled in the art will appreciate. The lower end portion of the body 50 is placed on the upper end of the inner wall 40 provided in the packing seating portion 32 of the housing 20, and a stepped receiving step portion 54 is provided so as to be inserted into the inner wall 40. . Of course, a through hole 56 communicating with the passage hole 30 is provided at the lower end of the body 50. The cover flange 52 is placed on the receiving flange 38 of the housing 20. The cover flange 52 has a peripheral portion 58 that is folded downward and extends so as to surround the receiving flange 38.

  2 to 4, the annular lid body 24 covers the flanges 38 and 52 in a state where the cover flange 52 is placed on the receiving flange 38 of the housing 20. The annular lid body 24 includes a rim that extends in the vertical direction, and an upper flange and a lower flange that extend radially inward from the upper and lower ends of the rim. (See FIG. 4). The annular lid 24 is made of a metal plate material that can be plastically deformed, such as copper or a copper alloy. In FIG. 3, for the convenience of illustration, the annular lid body 24 is removed and shown in an assembled state, but the annular lid body 24 is assembled through the steps described below.

  As shown in FIGS. 1 to 3, the connection body 16 is provided with a collet 26 and a cap 28 in order to firmly fix the hose 12 inserted into the hose insertion end 44 so as to withstand the required water pressure. ing. The collet 26 has a plurality of legs 62 that extend downward and are gathered toward the center and separated from each other by a groove 60. A pressing protrusion 64 is provided on the inner side of the lower end of the leg 62 so as to apply a strong pressure to the hose 12 so as to be pressed. The pressing protrusion 64 is pointed and is preferably configured to apply a strong pressure to the hose 12. As shown in FIG. 2, the outer surface of the leg 62 is formed to be inclined.

  The cap 28 shown in FIGS. 1 to 3 is for pressing the leg portion 62 of the collet 26 so as not to be separated from the collet 26. As shown in FIGS. 2 and 3, the cap 28 is provided with a female screw 66 that is screwed into the male screw 42 of the housing 20. The lower end portion is provided with a raised portion 68 that protrudes inwardly in the circumferential direction. When the cap 28 is rotated and screwed, the cap 28 rises and the raised portion 68 gets on the outer inclined surface of the leg portion 62 and deforms the leg portion 62 inward. In this way, the protrusion 64 provided on the leg 62 presses the hose 12 so that the hose 12 does not come out even at a high water pressure.

  1 to 3, the clamp device 18 for firmly fixing the connection body 16 to the faucet 14 includes a tightening ring 70 and a lever mechanism 72. The tightening ring 70 includes a first semicircular support 76 and a second semicircular support 78 that are rotatably connected to each other by a hinge pin 74. At one end of the first semicircular support 76, a groove 80 is provided in the middle in the thickness direction, and a protrusion 82 is provided on both of the grooves 80. One end of the second semicircular support 78 is provided with a protruding portion 84 at an intermediate portion. The projecting portion 84 is inserted into the groove 80, and the projecting portions 82 and 84 are provided with holes extending in the vertical direction, and the hinge pin 74 is inserted into the hole. Further, an upper groove 92 and a lower groove 94 that are recessed in the circumferential direction are formed on the inner peripheral surfaces of the supports 76 and 78. When the supports 76 and 78 are joined, the upper groove 92 and the lower groove 94 form an annular groove.

  On the opposite side of the supports 76 and 78 where the protrusions 82 and 84 are formed, extensions 86 and 88 extending in a substantially radial direction are provided. The extensions 86, 86 are provided with holes 90 extending in the tangential direction. When the extension portions 86 and 88 are brought into contact with each other, the holes are connected to each other, and a bolt 96 of the lever mechanism 72 described later passes through the hole 90.

  As shown in FIGS. 1 and 3, the lever mechanism 72 is fixed to a clamp lever 98, a bolt 96 rotatably connected to the clamp lever 98 by a hinge pin 100, and an end of a bolt protruding from the hole. Nut 102. When an appropriate shape is given to the curved surface in contact with the support body 76 in the joint portion of the clamp mechanism 98 of the lever mechanism 72 with the bolt 96, the support body 76, It will be described later with reference to FIG. 16 that the space between the support members 76 and 78 is tightened when the clamp lever 98 is rotated and contracted. Will be understood by those skilled in the art. It will be understood by those skilled in the art that such a lever mechanism 72 is used in a normal clamp.

  2 and 4, the flanges 38 and 52 of the housing 20 and the packing 22 covered with the annular lid 24 are inserted into the lower groove 94 of the clamping ring, and between the supports 76 and 78. This portion enters the lower groove 94 when tightening. If the annular lid 24 is not provided, the flange 38 of the packing 22 is in direct contact with the inner surface of the groove 94, but is difficult to be inserted into the groove 94 due to a large frictional force. Therefore, it is preferable to cover the flanges 38 and 52 with the annular lid body 24 as in this embodiment.

  FIG. 5 shows an example of a process for coupling such an annular lid 24 with the flanges 38 and 52. As shown in FIG. 5 (a), first, a material formed on the "U" -shaped annular lid 24, that is, a "F" -shaped cross section provided with a rim and an upper flange as shown. The packing 22 is positioned within the material of the annular lid that it has. Then, the housing 20 is positioned inside the packing 22 and the peripheral edge 58. Those skilled in the art will understand that if the dimensions of the annular lid material, the packing 22 and the flanges 38, 52 of the housing 20 are set appropriately, the inserted state can be maintained by the elasticity of the material of the packing 22. Will be done. In the state where the three parts are temporarily assembled in this way, as shown in FIG. 5A, the three parts temporarily assembled are arranged upside down on the die 104. Next, in a state where the upper punch 106 is lowered and pressure is applied to the housing 20 to fix the position, a side punch 108 as shown in FIG. It is formed into an annular lid 24 having a U-shaped cross section. Although FIG. 5 (b) shows two side punches, those skilled in the art will appreciate that there may be three or more than four. When the side punch 108 is used for molding in this way, molding can be performed without being affected by the shape of the outer surface of the housing.

  FIG. 6 shows a modification of the process of covering the flanges 38 and 52 with the annular lid 24. In FIG. 6, as shown in FIG. 5, the materials of the housing 20, the packing 22, and the annular lid 24 are temporarily assembled and then placed on the die 104 a. However, contrary to the embodiment shown in FIG. 5, the housing 20 is arranged so as to be lowered. Further, the die 104 a has a recessed inner corner due to deformation of the material of the annular lid 24. Next, when the upper punch 106a is lowered and the upper flange of the material of the annular lid is pressed, the material of the lid is deformed and formed into the annular lid 24 having a “U” -shaped cross section. In addition, according to the process shown in FIG. 6, since the housing 20 must be fitted into the cavity in the die 104 a, it will be understood by those skilled in the art that the shape of the outer wall of the housing 20 may be limited. Let's go.

  FIGS. 7A and 7B show a modified example different from the first embodiment. In the modification shown in FIG. 7A, the cross-sectional shape of the lower groove 94a of the supports 76a and 78a is different from that of the first embodiment shown in FIG. In the configuration of the lower groove 94a, the upper surface is formed so as to be inclined downward toward the inner side (that is, toward the bottom of the groove), and the lower surface is formed toward the inner side (that is, at the bottom of the groove). It is formed so as to be inclined upwards as it goes. In the modification shown in FIG. 7B, in the configuration of the lower groove 94b of the supports 76b and 78b, the upper surface is formed horizontally, and the lower surface goes upward as it goes inward (that is, as it goes to the bottom of the groove). It is formed so as to be inclined. In this way, when the lower groove 94a or 94b has an inclined surface, the flanges 38a, 52a or 38b, 52b covered with the annular lid 24a or 24b are strongly fitted and joined by the lower groove 94a or 94b, respectively. Therefore, it is advantageous for maintaining the sealing property.

  As shown in FIGS. 1 to 3 and 8, the clamp device 18 has a pair of jaws 110 that are inserted corresponding to the upper grooves 92 of the supports 76 and 78, respectively. Each jaw 110 is a substantially semicircular plate, and an arc-shaped groove is recessed in the center thereof. In this arc-shaped groove, a plurality of protrusions 112 that protrude sharply toward the center are arranged at a regular interval along the circumference (three in the illustrated embodiment). Those skilled in the art will understand that the size of the arc-shaped groove and the height of the protrusion 112 are determined according to the size of the faucet 14 to be fitted. The jaw 110 is preferably made of a metal plate having a thick thickness (for example, a thickness of 1 mm to 2 mm) such as a rigid stainless steel.

  Each jaw 110 is provided with a coupling hole 114. As shown in FIGS. 8A and 9B, the coupling hole 114 is fitted into a hemispherical protrusion 116 provided in the upper groove 92 when the jaw 110 is inserted into the upper groove 92. Such a fitted jaw 110 cannot be easily removed. In the embodiment shown in FIG. 8, it has been described that the jaw 110 is inserted, but the present invention is not limited to this. When the support is injection-molded with engineering plastic, a jaw prepared in advance can be placed in a mold and insert injection-molded. At the time of this insert injection molding, it is preferable to form at least two coupling holes.

  In other embodiments, two or more pairs of jaws may be provided for each layer. Of course, in this case, a corresponding number of grooves into which these jaws are inserted are provided in the upper part of the support. For example, in FIG. 9, the clamping ring includes a first semicircular support 76f and a second semicircular support 78f that are rotatably connected to each other by a hinge pin 74f. Each support body 76f, 78f is provided with two lower grooves 94f, 95f. The jaws 110f are fitted in the lower grooves 94f and 95f, respectively.

  FIGS. 10 and 11 (a) to 11 (c) show components of a water supply pipe joint according to a modification of the first embodiment of the present invention. The connection relationship between the housing, the packing, and the annular lid is shown in FIGS. However, the configuration differs from that of the first embodiment. The water supply pipe joint according to this modification also includes a connection body and a clamping device. Since the same clamp device as that in the first embodiment and the modified example in which the configuration of the lower groove of the tightening ring is different can be used, detailed description is omitted. Also in the connection main body, the connection structure of the receiving flange 38c of the housing 20c and the cover flange 52c of the packing 22c and the configuration of the annular lid 24c are different from those of the first embodiment, and the other configurations are the same. Therefore, detailed description of the same configuration is omitted.

  Referring to FIG. 10 and FIG. 11 (a), the annular lid 24c includes a rim and a flange that is folded back from the upper end of the rim and extends radially inward, and its cross section has a “F” shape. However, this is different from the first embodiment. Further, as shown in FIGS. 11A to 11C, the width of the peripheral portion 58c of the cover flange 52c of the packing 22c is determined so as not to cover the entire thickness of the receiving flange 38c of the housing 20a. After the packing 22c is fitted to the annular lid 24c, and the receiving flange 38c of the housing 20c is fitted to the cover flange 52c of the packing 22c, these are supported by the supports 76c, 78c or 76d provided in the clamp device. , 78d or 76e, 78e are inserted into the lower grooves 94c or 94d or 94e. At this time, the structures of the lower grooves 94c, 94d, and 94e shown in FIGS. 11A to 11C are the same as those shown in FIGS. 7A, 7B, and 4 respectively. Detailed description will be omitted. As shown in FIG. 11A, the annular lid 24 comes into contact with the upper inclined surface of the lower groove 94c, and the receiving flange 38c of the housing 20c comes into contact with the lower inclined surface. Similarly, as shown in FIG. 11B, the annular lid 24c comes into contact with the upper surface of the lower groove 94c, and the receiving flange 38c of the housing 20c comes into contact with the lower inclined surface. In FIG. 11C, the annular lid 24c comes into contact with the horizontal upper surface of the lower groove 94e, and the receiving flange 38c of the housing 20c comes into contact with the horizontal lower surface. Unlike the configuration according to the first embodiment, the configuration according to the modification shown in FIGS. 10 and 11A to 11C does not require an additional step for the annular lid 24c.

  As shown in FIGS. 12 to 14, a water supply pipe joint 10g according to a second embodiment of the present invention includes a connection body 16g that forms a water passage between a hose 12g and a faucet 14g that is a water supply pipe, A clamp device 18g coupled to the faucet 14g is provided so that the connection body 16g is held in its original position.

  Since the connection body 16g has the same configuration as that of the first embodiment, detailed description thereof is omitted. 12 to FIG. 14, it is understood by those skilled in the art that the portions indicated by the reference numerals of the connection body 16 g indicate the portions indicated by the same reference numerals of the connection bodies 16 shown in FIGS. 1 to 3. Will be understood.

  Continuing to refer to FIGS. 12 to 14, the clamping device 18g for firmly fixing the connection body 16g to the faucet 14g has a tightening ring 70g and a lever mechanism 72g. The tightening ring 70g includes a first semicircular support 76g and a second semicircular support 78g that are rotatably connected to each other by a hinge pin 74g. One end of the first semicircular support 76g is provided with a groove 80g in the middle in the thickness direction, and a protrusion 82g is provided on both of the grooves 80g. One end of the second semicircular support 78g is provided with a protruding portion 84g in the middle thereof. The protruding portion 82g is fitted in the groove 80g, and the protruding portions 82g and 84g are provided with holes extending in the vertical direction, and the hinge pin 74g is fitted in the holes. Further, an upper groove 92g and a lower groove 94g that are recessed in the circumferential direction are provided on the inner peripheral surfaces of the supports 76g and 78g. When both supports 76g and 78g are joined, the upper groove 92g and the lower groove 94g are substantially annular grooves.

  On the opposite side of the supports 76g and 78g where the protrusions 82g and 84g are formed, extension portions 86g and 88g extending substantially in the radial direction are provided. The extensions 86g and 88g are provided with holes 90g extending in the tangential direction. When the extension portions 86g and 88g are brought into contact with each other, the holes are connected to each other, and male and female connection pins 96g and 97g of a lever mechanism 72g described later pass through the hole 90g.

  12 to 14, the clamping device 18g has a pair of jaws 110g inserted corresponding to the upper grooves 92g of the supports 76g and 78g, respectively. Since the configuration of the jaw 110g is the same as that of the first embodiment, detailed description thereof is omitted.

  As shown in FIGS. 12 to 14, the lever mechanism 72g includes first and second clamp levers 98g and 99g, and male and female connection pins 96g that are rotatably connected to the clamp levers 98g and 99g by hinge pins 100g and 101g, respectively. 97g. The clamp levers 98g and 99g have substantially the same bent arc shape, and have a head 104g connected to the male and female connecting pins 96g and 97g and a handle 106g extending from the head. A groove 108g is provided in the middle of the head 104g, and the heads of male and female connecting pins 96g and 97g described later are inserted. The head 104g is provided with a hole 109g into which hinge pins 100g and 101g penetrating in the vertical direction are fitted. The male and female connecting pins 96g and 97g are connected to the first and second levers 98g and 99g, respectively, and have heads 112g and 113g and legs 114g and 115g, respectively. Each head 112g, 113g has a flat cylindrical shape, and hinge pin holes 116g, 117g communicating with the holes 109g of the clamp levers 98g, 99g are provided at the center thereof. The respective leg portions 114g and 115g extend from the respective head portions 112g and 113g. The leg 114g of the female connecting pin 96g is provided with a hole extending in the longitudinal direction from the end to the inside, and a female screw is formed there. A male thread 119g that is screwed into the hole of the female coupling pin 96g is formed at the end of the leg 115g of the male coupling pin 97g.

  As shown in FIGS. 14 and 15 (a), the clamp levers 98g and 99g and the male and female connecting pins 96g and 97g are punched up and down after fitting the hinge pins 100g or 101g into the through holes 109g and 116g or 117g. ) Move 122g and 123g. Each punch 122g, 123g has a ring-shaped pointed projection 124g at its end. When the projection 124g hits the hinge pins 100g and 101g, a part of the ends of the hinge pins 100g and 101g is plastically deformed to spread. Then, the hinge pins 100g and 101g are fitted into the holes 109g of the clamp levers 98g and 99g, so that the hinge pins 100g and 101 are securely coupled. At this time, as shown in FIG. 15, a part of the lever surrounding the hinge pins 100g and 101g can also be plastically deformed. At this time, those skilled in the art will understand that the hinge pins 100g, 101g and the holes 116g, 117g of the connecting pins 96g, 97g are rotatably coupled.

  As shown in FIGS. 12 to 14, the assembled clamp levers 98g and 99g and male and female connection pins 96g and 97g are fitted into holes 90g of semicircular supports 76g and 78g, respectively, and rotate the clamp lever 98g or 99g. Then, the connecting pins 96g and 97g are connected by the connection of the female screw and the male screw.

  Referring to FIG. 16, the outer peripheral curves provided on the heads 104g of the clamp levers 98g and 99g have different distances from the hinge center axis (rotation center axis). For example, in a state where the clamp levers 98g and 99g are rotated so that the space between the supports 76g and 78g and the handle 106g is widened, the radius of the position where the clamps abut against the supports 76g and 78g is R1 (see the solid line state) In a state where the clamp levers 98g and 99g are rotated and contracted, the radius of the position contacting the support members 76g and 78g is R2 (see the state of the one-dot chain line), and when R2 is larger than R1, the support member 76g, One skilled in the art will appreciate that 78g moves and becomes clamped between the supports 76g, 78g. In the case of having the configuration of the clamp device as in the second embodiment shown in FIG. 12, since there are two levers, the tightening state of the tightening ring can be made stronger. Of course, those skilled in the art will appreciate that the distance between the male and female connecting pins 96g, 97g can also be adjusted by rotation.

  With reference to FIG.17 and FIG.18, the water supply pipe joint 10h by the 3rd Embodiment of this invention has the connection main body 16h and the clamp apparatus 18h. The connection main body 16h has the same configuration as that of the first embodiment, and a detailed description thereof will be omitted. A clamp device 18h for firmly fixing the connecting body 16h to the faucet includes a tightening ring 70h and a pair of lever mechanisms 72h having the same configuration. The clamping ring 70h has a first semicircular support 76h and a second semicircular support 78h. At both ends of the first semicircular support 76h, there are extended portions 86h and 88h extending substantially in the same radial direction. The extending portions 86h and 88h are provided with holes 90h extending in the tangential direction. When the extension portions 86h and 88h are brought into contact with each other, the holes are connected to each other, and a bolt 96h of a lever mechanism 72h described later is inserted into the hole 90h. The other configuration of the support 76h is the same as the configuration in the first embodiment described above, and thus detailed description thereof is omitted.

  Next, referring to FIGS. 17 and 18, the lever mechanism 72h includes a clamp lever 98h, a bolt 96h, and a nut 102h. Since the shape and configuration of the clamp lever 98h are the same as the configurations of the first and second embodiments, detailed description thereof will be omitted. The bolt 96h has the same configuration as that of the first embodiment and has a head 102h. The configuration of the head 102h is the same as the configuration of the head of the hinge pin of the second embodiment. A male screw is formed on the leg portion 114h of the bolt 96h. The nut 105h is formed with a female screw that is screwed with the male screw of the bolt 96h. It is preferable that a noisy portion is formed on the outer periphery of the nut 102h.

  Since the coupling between the clamp lever 98h and the head of the bolt 96h is the same as that of the second embodiment, detailed description thereof is omitted. The bolts 96h are fitted into holes provided in the extensions 86h and 88h of the supports 76h and 78h, and the nut 102h is rotated to be coupled. As shown in FIG. 17, each lever mechanism 72h is installed so as to be symmetric with respect to the central axis. With respect to the lever mechanism 72h installed in this manner, the tightening ring 70h is tightened by rotating and contracting the clamp lever 98h. The person skilled in the art will refer to the description of the second embodiment. It will be understood. The clamp device 18h of the water supply pipe joint 10h according to the third embodiment having such a configuration can adjust the distance between the support bodies from both ends of the support bodies 76h and 78h. Regardless of the situation

  In the second embodiment and the third embodiment described above, the connection main body of the water supply pipe joint has been described as being the same as that in the first embodiment, but water is connected between the water supply pipe and the hose. Of course, other types of connection bodies can be used as long as they form a passage through which the gas flows and maintain proper sealing.

  The water supply pipe joint according to the present invention can be used for connecting a water supply hose of a washing machine and for connecting a water supply hose of a flower garden. Moreover, in embodiment mentioned later, although demonstrated as a water supply pipe joint which supplies water, this invention is not restrict | limited to this, It can be used also when connecting the flow of another fluid.

  The present invention has been described based on the embodiments. However, the present invention is not limited to these embodiments, and those skilled in the art can make modifications and changes without departing from the spirit and scope of the present invention. It will be appreciated that such modifications and variations are within the scope of the present invention.

It is a perspective view which shows the water supply pipe coupling by the 1st Embodiment of this invention. It is sectional drawing of the water supply pipe coupling shown in FIG. 1, Comprising: It is a figure which shows the state which connected between the water supply pipe and the connection hose. It is a disassembled perspective view of the water supply pipe joint shown in FIG. 1, Comprising: Some components are the figures cut out and shown so that the inside may be seen. FIG. 2 is an enlarged cross-sectional view showing a coupling relationship between a housing, a packing, and an annular lid inserted in a groove of a tightening ring in the water supply pipe joint of FIG. FIG. 2 is a diagram illustrating an example of a step of forming an annular lid in the water supply pipe joint of FIG. 1. FIG. 7 is a view showing another example of a step of forming an annular lid in the water supply pipe joint of FIG. 1. (A) And (b) is an expanded sectional view which shows the other modification of the groove | channel of a clamping ring in the water supply pipe coupling of FIG. In the water supply pipe joint of FIG. 1, it is sectional drawing which shows the coupling | bonding of a clamping ring and a jaw, Comprising: (a) is a state before insertion, (b) is a figure which shows a state after insertion. FIG. 7 is an exploded perspective view of a tightening ring and jaws of a water supply pipe joint according to a modification in which the number of jaws provided in the tightening ring is increased in the water supply pipe joint according to the first embodiment of the present invention. The water supply pipe joint by the 1st Embodiment of this invention WHEREIN: In the water supply pipe joint by the modification which has a structure from which the connection relationship of a housing, a packing, and an annular lid differs, a housing, a packing, and an annular lid are decomposed | disassembled and shown. It is a disassembled perspective view. (A) thru | or (c) is an expanded sectional view which shows the coupling | bonding relationship of the housing, packing, and cyclic | annular cover body which were inserted in the groove | channel of the clamping ring in the water supply pipe coupling by the modification of FIG. It is a perspective view which shows the water supply pipe coupling by the 2nd Embodiment of this invention. It is sectional drawing which shows the state which connected the faucet and the hose in the water supply pipe coupling shown in FIG. It is a disassembled perspective view of the water supply pipe joint shown in FIG. 12, Comprising: Some components are the figures cut out and shown so that the inside may be seen. (A) And (b) is a figure which shows an example of the process of processing and fixing a hinge pin, when a lever and a connection pin are couple | bonded in the water supply pipe coupling of FIG. It is a figure explaining the lever mechanism operation | movement of the clamp apparatus of the water supply pipe coupling of FIG. It is a perspective view which shows the water supply pipe coupling by the 3rd Embodiment of this invention. It is a disassembled perspective view which decomposes | disassembles and shows only the clamp apparatus of the water supply pipe joint shown in FIG.

Claims (26)

A fluid coupling coupled to the end of the fluid supply pipe to connect the hose with the fluid supply pipe so that the fluid flow is extended;
A connection body provided with a fluid flow path from the fluid supply pipe to the hose, and a hose is coupled;
A clamp device for fixing the connection body to the end of the fluid supply pipe;
The connection body is
As a packing for maintaining a seal when connected to the fluid supply pipe, a body into which the end of the fluid supply pipe is inserted, and a cover flange that extends substantially horizontally from the top of the body. With packing,
As a housing provided with a hole for a fluid flow passage, the packing is seated on the upper part, and a packing seating part having a receiving flange located at the lower part of the cover flange, and a hose coupling part to which the hose is coupled A housing having
An upper part of the cover flange of the packing and an annular lid that covers at least a part of the periphery;
The clamping device is
A clamping ring having a first groove provided around the inner peripheral surface so that a cover flange and a receiving flange covering the annular lid are inserted, and having a jaw meshing with an end of the fluid supply pipe;
A fluid coupling comprising: a clamping device coupled to the clamping ring and adapted to engage a jaw of the clamping ring with the fluid supply pipe.   The annular lid includes a rim that covers the upper surface of the cover flange, the periphery of the cover flange, and the lower surface of the receiving flange, and an upper flange and a lower flange that are folded and extended from the rim. The fluid coupling according to claim 1.   3. The fluid coupling according to claim 2, wherein the first groove of the tightening ring has a horizontal plane on an upper surface and a lower surface on which the upper flange and the lower flange of the annular lid body abut.   3. The fluid according to claim 2, wherein at least one of an upper surface and a lower surface with which the upper flange and the lower flange of the annular lid abut each other is an inclined surface. Fittings.   3. The fluid coupling according to claim 2, wherein the first groove of the tightening ring has an upper surface and a lower surface on which the upper flange and the lower flange of the annular lid abut respectively, which are inclined surfaces. The annular lid includes a rim and an upper flange that is folded and extended from the rim so as to cover the upper surface of the cover flange and the periphery of the cover flange, whereby the lower surface of the receiving flange is exposed,
2. The fluid coupling according to claim 1, wherein the annular lid is in contact with an upper surface of the first groove of the tightening ring, and a receiving flange is in contact with the lower surface.   The fluid coupling according to claim 6, wherein the first groove of the tightening ring has a horizontal surface on an upper surface and a lower surface on which the upper flange and the lower flange of the annular lid body abut.   The fluid coupling according to claim 6, wherein the first groove of the clamping ring has at least one of an upper surface and a lower surface with which an upper flange and a receiving flange of the annular lid come into contact with each other as an inclined surface. .   7. The fluid coupling according to claim 6, wherein the first groove of the tightening ring has an inclined upper surface and a lower surface on which the upper flange and the receiving flange of the annular lid contact respectively.   The fluid coupling according to any one of claims 1 to 9, wherein the cover flange includes a peripheral portion extending downward around the cover flange.   The hose connection portion surrounds the hose connection end connected to the hose, the outside of the hose inserted outside the hose connection end, a collet having legs, and the collet. The fluid coupling according to any one of claims 1 to 10, further comprising a cap that presses the leg of the collet toward the hose.   The fluid coupling according to claim 11, further comprising: a pressing protrusion protruding sharply so as to press the hose on an inner side surface of the leg portion of the collet.   The clamping ring has a pair of semicircular supports that are coupled to each other, each semicircular support being provided with a second groove above the first groove, 13. The device according to claim 1, further comprising: a pair of jaws that are respectively fitted in the second grooves of the circular support body, wherein the tightening device joins and tightens the semicircular support body. Fluid fittings.   The fluid coupling according to claim 13, wherein one end of the pair of semicircular supports is connected to a hinge pin and the other end is connected by a tightening device.   The tightening device includes a lever mechanism, and the lever mechanism includes a bolt that passes through the other end of the pair of semicircular supports, a nut that is screwed to the bolt, and a head of the bolt. 15. The fluid coupling according to claim 14, further comprising a hinged lever. A method of manufacturing a fluid coupling according to any one of claims 2 to 5,
Preparing an annular lid material having one of an upper flange and a lower flange folded inward from one end of the rim and the rim; and
Positioning the cover flange and the receiving flange inside the annular lid;
Forming the other one of the upper flange and the lower flange by folding the end portion of the rim inwardly,
The method for manufacturing a fluid coupling, wherein the cover flange and the receiving flange are covered with the annular lid.   The fluid according to claim 16, wherein in forming the other one of the upper flange and the lower flange, the plurality of side punches moving in the horizontal direction are moved to form the fluid. A method for manufacturing a joint. A fluid coupling coupled to the end of the fluid supply pipe to connect the hose with the fluid supply pipe so that the fluid flow is extended;
A hose is connected, a fluid flow passage is provided from the fluid supply pipe to the hose, and a connection main body provided with a flange portion on the upper part;
A clamping device for fixing the connection body to the end of the fluid supply pipe,
The clamping device is
A clamping ring having a first groove formed around an inner peripheral surface so that the flange portion is inserted, and having a jaw that meshes with the end of the fluid supply end;
A fluid coupling, comprising: a clamping lever mechanism coupled to the clamping ring, the clamping ring being adapted to engage the fluid supply pipe, wherein the lever mechanism has two levers.   The clamping ring has a pair of semicircular supports that are coupled to each other, each semicircular support being provided with a second groove above the first groove, 19. The fluid coupling according to claim 18, further comprising a pair of jaws that are respectively fitted in the second grooves of the circular support, and the tightening lever mechanism is configured to couple and tighten the semicircular support.   The fluid coupling according to claim 19, wherein the pair of semicircular supports has one end connected to a hinge pin and the other end connected by a tightening lever mechanism.   21. The tightening lever mechanism includes a connecting rod that penetrates one end of the semicircular support and two levers that are rotatably coupled to both ends of the connecting rod. Fluid fittings.   The fluid coupling according to claim 21, wherein the connecting rod has a pair of connecting pins each having a head portion and a leg portion, and a fastening structure is provided between the leg portions.   Two clamping lever mechanisms for connecting between the respective ends of the pair of semicircular supports, each lever mechanism passing between the lever and the ends of the pair of semicircular supports; The fluid coupling according to claim 19, wherein one end portion is supported so as not to be pulled out, and the other end portion includes a connecting pin having a head portion hinged to the lever.   24. The fluid coupling according to claim 23, wherein the connecting pin includes a bolt having a head and a nut connected so as not to be detached from one end of the support.   The lever has a head and a handle, a groove is provided in the center of the lever, the head of the connecting pin is inserted into the groove, and the head of the lever and the head of the connecting pin The fluid coupling according to claim 22 or 24, further comprising a hinge pin that passes through the portion. It is a manufacturing method of the fluid coupling according to claim 25,
Inserting the head of the connecting pin into a groove provided in the head of the lever;
Coupling the hinge pin through the coupled lever head and the coupling pin head; and
And a step of pressing with a punch so that at least one end of the hinge pin is plastically deformed.

Images