JPH0596684U - Self-sealing fittings - Google Patents

Abstract

(57) [Summary] [Purpose] Connection of male and female joints for self-sealing joints
Smooths separation and improves durability. [Structure] The self-sealing joint 1 includes a male joint 10 and a female joint 40. The female joint 40 is provided with a valve assembly 45 thereof.
The swing support mechanism that supports the housing so as to swing in a predetermined small angle in all directions around a point P on the axis X and the valve assembly 45 supported by the swing support mechanism are set to the axis X
A slide centering mechanism is provided that is supported by the housing so as to be movable for a predetermined small distance in a direction orthogonal to In addition, in the male joint 10,
A swing support mechanism and a slide centering mechanism may be provided, or a swing support mechanism may be provided on one of the male and female joints and a slide centering mechanism may be provided on the other side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a self-sealing joint for connecting and disconnecting fluid passages, and more particularly to a swing mechanism for parallelizing the shaft center of a female joint and the shaft center of a male joint, and a parallelized swing mechanism. And a slide centering mechanism for centering both axes.

[0002]

[Prior Art]

 Conventionally, as various self-sealing joints for connecting and disconnecting fluid passages, a self-sealing joint including a female joint and a male joint detachably connected to the female joint has been put into practical use. When at least one of the female joint and the male joint is provided at the tip of a flexible hose or the like, the male and female joints can be easily connected. However, for example, in the case where a female joint is fixedly provided in a mechanical device, etc., and a male joint is provided in a moving body capable of moving relative to the mechanical device to connect and disconnect the self-sealing joint, the female joint and the male joint are The male and female joints are to be connected with each other tilted slightly and the shaft centers of both joints are misaligned.

In order to smoothly connect the self-sealing joint even in such a case, the applicant of the present invention supports the valve structure inside the housing of the female joint in a housing so as to swing freely. A self-sealing joint incorporating a swinging mechanism has been proposed (for example, see Japanese Utility Model Laid-Open No. 60-52495 / 52496).

[0004]

[Problems to be solved by the device]

 In the self-sealing joint described in the above publication, since the swing mechanism for supporting the valve assembly inside the female joint in a swingable and swingable manner is supported on the housing, the axial center of the female joint when connecting the self-sealing joint Even if the axis of the male joint is tilted with respect to, the axes of both joints become substantially parallel, so connection is relatively easy, but even if the axes of both joints become substantially parallel. However, if both shaft centers are slightly misaligned, the misalignment of the shaft centers will not be eliminated and the connection will be forcibly made, so the connection / separation of the self-sealing joint cannot be performed smoothly. There are problems that the fitting parts of the male and female joints are easily damaged or worn, the durability is reduced, and fluid leakage easily occurs. When separating the male and female joints, the valve mechanism inside the male and female joints opens even when the male and female joints are partially separated, and fluid flows out into the gap between the mating tip parts of the male and female joints. Therefore, fluid leakage is likely to occur when separating the self-sealing joint. An object of the present invention is to provide a self-sealing joint in which the axial centers of male and female joints can be surely parallelized and aligned.

[0005]

[Means for Solving the Problems]

 A self-sealing joint according to claim 1, further comprising: a female joint having a valve mechanism for opening and closing the fluid passage; a fluid passage connected to the fluid passage of the female joint; and a valve mechanism for opening and closing the fluid passage. In a self-sealing joint including a male joint that is detachably connected, the female joint includes a housing, a valve assembly housed in the housing and incorporating the valve mechanism, and the valve assembly. A swing support mechanism that swingably swings in all directions by a predetermined small angle with respect to the housing around a point on the axis and is supported by the housing, and a valve assembly supported by the swing support mechanism. It is provided with a slide centering mechanism that is supported by the housing so as to be movable by a predetermined small distance in a direction orthogonal to the axis.

A self-sealing joint according to a second aspect is the self-sealing joint according to the first aspect, wherein the rocking support mechanism includes a first partial spherical surface formed on a rear end surface of the valve assembly and the first partial spherical surface. A first spherical seat member that abuts a spherical surface, an annular second partial spherical surface formed on an outer peripheral surface of an axially intermediate portion of the valve component, and an annular second spherical seat member that aspherically abuts on the second partial spherical surface. It is equipped with.

A self-sealing joint according to a third aspect is the self-sealing joint according to the second aspect, wherein the slide aligning mechanism is formed in a housing and abuts against the rear end surface of the first spherical seat member in a plane. A second guide surface that guides in the direction orthogonal to the axis and a second guide surface that is formed on the housing and abuts the tip surface of the second spherical seat member in a plane to guide the tip surface in the axis orthogonal direction. Be prepared.

A self-sealing joint according to a fourth aspect is the self-sealing joint according to the first aspect, wherein the swing support mechanism includes an annular first partial spherical surface formed on an outer peripheral surface of a portion of the valve assembly near the rear end. , An annular first spherical seat member that comes into spherical contact with the first partial spherical surface, an annular second partial spherical surface formed on the outer peripheral surface at the axially intermediate portion of the valve component, and a spherical contact with the second partial spherical surface. And an annular second spherical seat member that is in contact therewith.

A self-sealing joint according to a fifth aspect includes a female joint having a valve mechanism that opens and closes a fluid passage, a fluid passage connected to the fluid passage of the female joint, and a valve mechanism that opens and closes the fluid passage, In a self-sealing joint comprising a male joint removably connected to a female joint, the male joint is a housing, a valve assembly provided in the housing and incorporating the valve mechanism, and the valve assembly. A swing support mechanism for swingably swinging in all directions in a predetermined small angle with respect to the housing about a point on its axis, and a valve assembly supported by the swing support mechanism. And a slide centering mechanism for supporting the housing on the housing so as to be movable a predetermined small distance in a direction orthogonal to the axis thereof.

A self-sealing joint according to claim 6 has a female joint having a valve mechanism for opening and closing the fluid passage, a fluid passage connected to the fluid passage of the female joint, and a valve mechanism for opening and closing the fluid passage, In a self-sealing joint including a male joint that is detachably connected to a female joint, one of the male joint and the female joint is a housing, and a valve assembly provided in the housing and incorporating the valve mechanism. And a swing support mechanism that supports the valve assembly in a housing so that the valve assembly can swing and swing in all directions by a predetermined small angle with respect to the housing with a point on the axis as a center. And the other of the female joints, the housing, the valve assembly provided in the housing and incorporating the valve mechanism, and the valve assembly are supported by the housing so as to be movable by a predetermined small distance in a direction orthogonal to the axis thereof. Surusu And a ride alignment mechanism.

[0011]

[Action]

 In the self-sealing joint according to claim 1, the valve assembly housed in the housing of the female joint and incorporating the valve mechanism is mounted on the housing around a point on its axis by the swing support mechanism. On the other hand, the valve assembly supported by the housing so that it can be swung in all directions by a predetermined small angle and supported by the swing support mechanism is moved in a direction orthogonal to its axis by the slide alignment mechanism. Since it is supported by the housing so that it can be moved a small distance, when connecting the male and female joints, the shaft center of both joints is made parallel by the swinging and swinging action of the swing support mechanism, and slide adjustment is performed. The centering mechanism automatically aligns the axes of both joints.

In the self-sealing joint according to claim 2, the swing support mechanism includes a first partial spherical surface formed on a rear end surface of the valve assembly, and a first spherical seat member that is in spherical contact with the first partial spherical surface. And the annular second partial spherical surface formed on the outer peripheral surface at the axially intermediate portion of the valve structural body, and the annular second spherical seat member spherically abutting on the second partial spherical surface. It is supported on the housing so that it can be swung in all directions around a point on its axis by a specified small angle.

In the self-sealing joint according to claim 3, the slide centering mechanism is formed in a housing and is in flat contact with the rear end surface of the first spherical seat member to guide the rear end surface in a direction orthogonal to the axial center. Through the second guide surface and the second guide surface that is formed on the housing and abuts the tip surface of the second spherical seat member in a plane and guides the tip surface in the direction orthogonal to the axis. It is supported by the housing so that it can move a predetermined small distance in the direction orthogonal to its axis.

In the self-sealing joint according to a fourth aspect, the swing support mechanism includes an annular first partial spherical surface formed on an outer peripheral surface of a portion of the valve assembly near the rear end, and a spherical portion on the first partial spherical surface. A ring-shaped first spherical seat member that comes into surface contact, a ring-shaped second partial spherical surface formed on the outer peripheral surface of the axial portion of the valve assembly, and a ring-shaped second spherical surface that makes spherical contact with the second partial spherical surface. Through the seat member, the valve assembly is supported by the housing so as to be swingable in all directions around a point on the axis thereof by a predetermined small angle.

In the self-sealing joint according to claim 5, the valve assembly provided in the housing of the male joint has a predetermined small amount with respect to the housing about a point on the axis thereof by the swing support mechanism. The valve assembly, which is supported by the housing so that it can swing and swing in all directions by an angle, and which is supported by the swing support mechanism, can be moved by a predetermined small distance in the direction orthogonal to its axis by the slide centering mechanism. Supported by the housing.

In the self-sealing joint according to the sixth aspect, one of the male joint and the female joint is provided with a valve component that is movable in a swinging manner at a predetermined small angle in all directions around a point on the axis thereof. An oscillating support mechanism is provided to support it, and the other of the male joint and the female joint is equipped with a slide centering mechanism that supports the housing structure so that it can be moved a predetermined small distance in the direction orthogonal to its axis. Since they are provided, when the self-sealing joint is connected, both shaft centers of the male and female joints are parallelized by the swing support mechanism, and both shaft centers are centered by the slide centering mechanism.

[0017]

[Effect of the device]

 According to the self-sealing joint of claim 1, a swing support mechanism for supporting the valve assembly of the female joint on the housing so as to swing and swing with respect to the housing, and a valve supported by the swing support mechanism. A slide centering mechanism that supports the structure in the housing so that it can move in a direction orthogonal to the axis of the structure is provided.Therefore, when connecting the male joint and the female joint, the shaft of both joints is rotated by the swing support mechanism. The cores can be parallelized, and the axial center of both joints can be automatically aligned by the slide alignment mechanism. Therefore, it is possible to connect and disconnect the self-sealing joint smoothly and efficiently, prevent damage and wear of the fitting portion of the male and female joints, improve durability, and improve fluid leakage due to the damage and wear. And so on.

According to the self-sealing joint of the second aspect, the swing support mechanism includes the first partial spherical surface of the rear end surface of the valve assembly, the first spherical seat member that abuts on the first partial spherical surface, and the shaft of the valve assembly. A simple structure is provided, which includes a second partial spherical surface on the outer peripheral surface at a midpoint in the direction and an annular second spherical seat member that abuts on the second partial spherical surface.

According to the self-sealing joint of the third aspect, the slide centering mechanism includes a second guide surface which is formed in a housing and which guides the rear end surface of the first spherical seat member in the direction orthogonal to the axial center, and the housing. A simple structure is provided that includes a second guide surface that guides the tip end surface of the formed second spherical seat member in the direction orthogonal to the axis.

According to another aspect of the self-sealing joint of the present invention, the swing support mechanism includes an annular first partial spherical surface and an annular first spherical seat member that abuts against the annular first partial spherical surface, and an annular second partial spherical surface and the annular second partial spherical surface. A simple structure including an abutting annular second spherical seat member is provided.

According to the self-sealing joint of the fifth aspect, since the male joint is provided with the swing support mechanism and the slide aligning mechanism as in the first aspect, the same effect as that of the first aspect can be obtained. can get.

According to the self-sealing joint of the sixth aspect, one of the male and female joints is provided with the swing support mechanism, and the other of the male and female joints is provided with the slide aligning mechanism. The effect is obtained.

[0023]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example in which the present invention is applied to a self-sealing joint for connecting / disconnecting hydraulic passages of a hydraulic supply system.This self-sealing joint is used for a pressurized air supply system and other various fluids. It can also be applied as a self-sealing joint for supply systems. As shown in FIGS. 1 to 4, the self-sealing joint 1 includes a male joint 10 and a female joint 40. For example, the male joint 10 is fixedly provided to a mechanical device (not shown), and the hydraulic pressure of the mechanical device is set. The female joint 40 is fixedly provided on a moving body such as an oil passage connecting device (not shown) which is connected to a hydraulic passage leading to the equipment and which moves back and forth with respect to the mechanical device, and is detachably connected to the male joint 10. And is connected to a hydraulic pressure supply device (not shown). However, the female joint 40 may be fixedly provided, and the male joint 10 may be movably provided.

First, the male joint 10 will be described. The male joint 10 is provided with an integral housing 11, a valve structure 12 provided in the housing 11, a spring 13, a filter member 14, and the like. The valve assembly 12 is composed of a male member 15 screwed to the housing 11 and a valve body 16 mounted on the male member 15. A large-diameter recessed hole 17 is formed in the housing 11 from the front end surface thereof, and a large-diameter cylindrical portion 18 on the base end side of the male member 15 is screwed into the recessed hole 17 to form a base end of the housing 11. An oil passage port 20 communicating with the recessed hole 17 via an oil passage 19 is formed in the portion.

The male member 15 is provided with a large-diameter cylindrical portion 18, a flange portion 21 at the tip thereof, and a small-diameter cylindrical portion 22 extending from the center of the distal end of the collar portion 21 to the outside of the tip by a predetermined length. A large-diameter valve hole 23 communicating with the oil passage 19 is formed in the large-diameter cylindrical portion 18, and an oil passage hole 24 communicating with the valve hole 23 is formed in the collar portion 21 and the small-diameter cylindrical portion 22. A spool valve hole 35 having a diameter smaller than that of the oil passage hole 23 is formed in the tip portion of the tubular portion 22, and an annular poppet valve seat 25 is formed at the base end portion of the collar portion 21.

The valve body 16 mounted in the male member 15 is a poppet valve portion 26 slidably mounted in the valve hole 23 and has a plurality of oil passage grooves 27 in the outer peripheral portion. A portion 26, a valve shaft portion 28 protruding from the center of the tip of the poppet valve portion 26 toward the tip side, and a spool valve portion 29 at the tip portion of the valve shaft portion 28 are provided, and the tip portion of the poppet valve portion 26 is provided. A synthetic resin sealing member 30 that abuts the poppet valve seat 25 is embedded, and an O-ring 31 is attached to the spool valve portion 29. The poppet valve portion 26 and the poppet valve seat 25 form a poppet. A valve 32 is formed, and a spool valve 33 is formed by the valve hole 35 and the spool valve portion 29. A filter member 14 is attached to the oil passage 19, the filter member 14 is fixed by a ring member 34 whose position is restricted by the base end surface of the large-diameter cylindrical portion 18, and the valve body 16 is closed by a valve closing spring 13. The valve is urged toward the side. Reference numeral 36 is an O-ring.

Next, the female joint 40 will be described. The female joint 40 includes a housing 44 composed of three members (a proximal end housing member 41, a cylindrical housing member 42, and a distal end housing member 43), a valve assembly 45, and a valve assembly 45. A swing support mechanism that supports the housing 44 so that it can swing in a predetermined small angle in all directions around a point P on X, and a housing that allows the valve assembly 45 to move a predetermined small distance in a direction orthogonal to the axis X thereof. A slide aligning mechanism and the like supported by 44 are provided. An oil passage port 46 is formed in the base end housing member 41, and a filter member 49 is provided in an oil passage 47 communicating with the oil passage port 46 via a ring member 48. A pressure air port 50 for introducing pressure air and an air passage 51 communicating with the pressure air port 50 are formed therein.

The valve assembly 45 includes a female member 52, a sleeve 53, a valve opening member 54, a valve closing spring 55 and the like. A large-diameter valve hole 56 is formed in the female member 52, and a tip portion of the large-diameter valve hole 56 is slightly reduced in diameter to form a step portion 57. The step portion 57 engages with the large-diameter valve hole 56. A sleeve 53 having a step portion to be stopped is slidably mounted. The valve opening member 54 is a large-diameter portion 58 at the base end portion thereof, which is oil-tightly fitted into the base end portion of the large-diameter valve hole 56, and a distal end portion of the large-diameter portion 58. A small diameter valve opening rod portion 59 extending toward the tip side in the large diameter valve hole 56, and a spool valve portion slidably fitted in the valve hole 60 of the sleeve 53 formed at the tip portion of the valve opening rod portion 59. 61 is provided, an O-ring 62 is attached to the spool valve portion 61, and the spool valve portion 61 and the valve hole 60 constitute a spool valve 63.

An O-ring 64 that seals between the sleeve 53 and the female member 52 is provided, and the sleeve 53 is urged toward the large diameter portion 58 by the valve closing spring 55 in the distal direction. A hole 65 is formed. Further, an annular gap 66 is formed on the outer peripheral side of the distal end side portion of the female member 52 to allow swinging around the point P of the valve assembly 45, and the O-ring 67 allows the female member 52 and the distal end housing member. The space 43 is sealed and the female member 52 is centered.

The swing support mechanism includes a first partial spherical surface 70 (the center of which is a point P) formed on the base end surface (back end surface) of the large diameter portion 58 of the valve opening member 54, and the first partial spherical surface 70. A first spherical seat member 71, which makes spherical contact with the partial spherical surface 70, and an annular second partial spherical surface 72 (the center of which is a point P) formed on the outer peripheral portion of the female member 52 in the axial direction. It is composed of an annular second spherical surface seat member 73 that comes into spherical contact with the two-part spherical surface 73, the gap 66, and an annular gap 74 between the female member 52 and the second spherical seat member 73.

The slide centering mechanism is a flat base end surface of the first spherical seat member 71, and is a base end surface 75 orthogonal to the axis X, and a flat surface abutting slidably on the base end surface 75. A first guide surface 76 formed on the proximal housing member 41, a flat distal end surface of the second spherical seat member 73, which is orthogonal to the axis X, and a sliding end surface 77. A second guide surface 78 formed on the tip housing member 43 so as to make a plane contact with itself, an annular gap 79 between the first spherical seat member 71 and the tubular housing member 42, and a second spherical seat member 73. And an annular gap 80 between the cylindrical housing member 42 and the gaps 66 and 74.

Regarding the oil passage, the oil passage 47 communicates with the valve hole 60 via the oil passage 81 of the first spherical seat member 71, the oil passage 82 of the large diameter portion 58, and the large diameter valve hole 56. Has been done. Regarding the air passage, the pressurized air port 50 is formed in the air passage 51, the annular air passage 83 between the valve assembly 45 and the cylindrical housing member 42, the gap 80, and the tip surface 77 of the second spherical seat member 73. The plurality of injection holes 85 for injecting air are formed in the tip end portion of the female member 52 in an inclined shape of about 45 degrees toward the axial direction. At the time of connecting the self-sealing joint 1, pressurized air is ejected from these injection holes 85 so that the tip of the small diameter cylindrical portion 22 of the male joint 10 and the spool valve portion 29 can be blown with air.

When the male joint 10 and the female joint 40 are connected, the spool valve portion 29 of the valve body 16 and the spool valve portion 61 of the valve opening member 54 are arranged so as to be aligned with each other. A partially convex spherical convex portion 68 is formed at the center of the tip end surface of the valve portion 29, and a partially concave spherical concave portion 69 with which the convex portion 68 is engaged is formed at the center of the tip end surface of the spool valve portion 61. Has been done.

Next, the operation of the self-sealing joint 1 described above will be described. When connecting this self-sealing joint 1, operate continuously in the order shown in FIGS. 1, 2, 3, and 4, and when separating the self-sealing joint 1, operate continuously in the reverse order. become. When the self-sealing joint 1 is connected in a state where the axis Y of the male joint 10 and the axis X of the female joint 40 are parallel and aligned, as shown in the figure, the male joint 10 and the female joint 40 are separated from each other. It will be fitted and connected smoothly. At this time, as shown in FIG. 2, the small-diameter cylindrical portion 22 is fitted into the front end portion of the large-diameter valve hole 56 of the female member 52, the small-diameter cylindrical portion 22 abuts on the tip of the sleeve 53, and the spool valve portion 2 Since the poppet valve 32, the spool valve 33, and the spool valve 63 do not open until the tip of the valve 9 comes into contact with the tip of the spool valve portion 61 and the convex portion 68 and the concave portion 69 are engaged with each other, the oil No leaks occur. Further, since the tip of the small-diameter cylindrical portion 22 and the spool valve portion 29 are air blown by the air ejected from the plurality of injection holes 85, foreign matter is not caught between the male joint 10 and the female joint 40.

Next, as shown in FIG. 3, when the distance between the male joint 10 and the female joint 40 is reduced, the small diameter cylindrical portion 22 rushes into the large diameter valve hole 56 of the female member 52 and the sleeve. Since 53 is pushed backward, the valve body 16 is pushed backward by the valve opening member 54, the poppet valve 32 and the spool valve 33 are opened, and the gap between the male joint 10 and the female joint 40 is further increased. As shown in FIG. 4, both spool valve parts 29 and 61 move further inward than the valve hole 35, the spool valve 63 also opens, and the female member 52 contacts the collar part 21. The oil passage port 46 and the oil passage port 20 are brought into contact with each other via the oil passages 47, 81, 82, the large diameter valve hole 56, the valve holes 60, 35, the oil passage hole 24, and the valve hole 23. Communicated. Even when the self-sealing joint 1 is separated, as shown in FIG. 2, the poppet valve 32, the spool valve 33, and the spool valve 63 are closed, and the small-diameter cylindrical portion 22 and the sleeve 53 and the spool valve portion are closed. Since there is no gap between 29 and 61 before they are separated, no oil leakage occurs. After the separation, the female member 52 is centered with respect to the distal housing member 43 by the elastic force of the O-ring 67.

When connecting the self-sealing joint 1, when the axis X of the female joint 40 is slightly inclined with respect to the axis Y of the male joint 10 as shown in the operation explanatory view of FIG. Is a slide between the first partial spherical surface 70 and the first spherical seat member 71 of the swing support mechanism and a sliding between the second partial spherical surface 72 and the second spherical seat member 73 when they are fitted as shown in FIG. Since the valve component 45 swings around the point P due to the swinging action through the motion, both axis centers X and Y become parallel. Moreover, in the slide centering mechanism, sliding between the base end surface 75 of the first spherical seat member 71 and the first guide surface 76 and sliding between the distal end surface 77 of the second spherical seat member 73 and the second guide surface 78 are performed. By the centering action via the valve assembly 45, the valve assembly 45 moves a small distance in the direction orthogonal to the axis X, so that the axes X and Y are aligned on the same axis. Therefore, even when the axes X and Y of the male joint 10 and the female joint 40 are not parallel to each other, the male joint 10 and the female joint 40 are smoothly and smoothly connected. The action of preventing oil leakage is the same as described above.

Next, a modified example in which a part of the configuration of the female joint 40 of the above embodiment is changed will be described. However, the same components as those in the above-mentioned embodiment are designated by the same reference numerals. As shown in FIG. 6, the large-diameter portion 91 of the valve opening member 90 of the female joint 40A is screwed into the proximal end portion of the large-diameter valve hole 56, and the outer peripheral surface of the female member 52 near the proximal end is annular. Of the first partial spherical surface 92 (the center of which is a single point P) is formed, and instead of the first spherical seat member 71, an annular first spherical seat member 93 that comes into spherical contact with the first partial spherical surface 92 is provided. An annular gap 94 is formed between the first spherical seat member 93 and the cylindrical housing member 42. As described above, the swing support mechanism is composed of the first partial spherical surface 92, the first spherical seat member 93, the second partial spherical surface 72 and the second spherical seat member 73 similar to the above, and the gap 66 and the like. ..

Further, the base end surface 95 of the first spherical seat member 93 is formed in a plane shape orthogonal to the axis X, and the base end housing member 41 is formed with a guide surface 76 that comes into planar contact with the base end surface 95. Has been done. As described above, the slide centering mechanism is composed of the base end surface 95 of the first spherical seat member 93, the guide surface 76, the tip end surface 77, the guide surface 78, the gaps 94, 80, 66 and the like. Since the operation of this female joint 40A is the same as that of the above-mentioned embodiment, its explanation is omitted.

Next, another embodiment of the self-sealing joint will be described. However, the same components as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 7, in the self-sealing joint 1B, the male joint 10B is provided with a swing support mechanism, and the female joint 40B is provided with a slide centering mechanism. The housing 103 of the male joint 10B is composed of a main body housing member 101 and a tip housing member 102 fixed to the main body housing member 101. A spherical surface 105 is formed, and a spherical seat member 106 slidably abutting on the partial spherical surface 105 is mounted in the recessed hole 17 of the main body housing member 101, and an annular member is provided between the male member 100 and the tip housing member 102. A gap 107 is formed, the gap 107 is sealed with an O-ring 35 and the male member 100 is centered with the O-ring 35. In this way, the swing support mechanism that swings and supports the valve assembly 12A around the point Q on the axis Y of the valve assembly in all directions is a partial spherical surface 105, a spherical seat member 106, and a gap 107. The valve assembly 12A is swingable in all directions at a predetermined small angle about a point Q.

The valve assembly 110 of the female joint 40B is composed of a female member 111, a sleeve 53, a valve opening member 112, and a valve closing spring 55, and the large diameter portion of the female member 111 is formed in a substantially cylindrical shape. An annular gap 113 is formed between the large diameter portion and the cylindrical housing member 42. Further, the large-diameter portion and the base end surface 114 of the valve opening member 112 are formed in a plane shape orthogonal to the axis X, and the base end surface 114 is slidable on the first guide surface 76 of the base end housing member 41. The leading end surface 115 of the large-diameter portion which is in contact with is formed in a plane shape orthogonal to the axis X 1, and the leading end surface 115 is slidably placed on the second guide surface 78 of the leading end housing member 43. Touching. Further, an annular gap 66 is formed between the outer peripheral surface of the front end portion of the female member 110 and the front housing member 43. The gap 66 is sealed by an O ring 67 and the female member 111 is centered by the O ring 67. It is configured to be

As described above, the slide aligning mechanism that supports the valve assembly 110 on the housing 44 so as to be movable in the direction orthogonal to the axis X of the valve assembly 110 has the base end surface 114, the first guide surface 76, and the tip end surface. 115, the second guide surface 78, and the gaps 113, 66, etc., the valve assembly 110 is movable by a predetermined small distance in the direction orthogonal to the axis X with respect to the housing 44. Therefore, when connecting the male joint 10B and the female joint 40B of the self-sealing joint 1B, both axial centers X and Y are parallel to each other through the swing of the valve structure 12A by the swing support mechanism of the male joint 10B. Further, both axial centers X and Y are automatically centered by the centering action of the slide centering mechanism of the female joint 40B.

Next, a modified example in which the configuration of the self-sealing joint 1B of the another embodiment is partially modified will be described. However, the same parts as those described above are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 8, in this self-sealing joint 1C, the male joint 10C is provided with a rocking support mechanism and a slide aligning mechanism, and the valve assembly 112 of the female joint 40C is fixedly provided on the housing 44. There is. In the male joint 10C, an annular gap 120 is formed between the spherical seat member 104 and the inner peripheral surface of the concave hole 17 of the main body housing 101, and the base end surface 121 of the spherical seat member 106 is orthogonal to the axis Y. The base end surface 121 is formed in a planar shape and is slidably brought into contact with the first guide surface 122 at the tip of the ring member 34 to be guided, and the tip end surface 123 of the spherical seat member 106 has an axis Y. Is formed in an orthogonal plane shape, and its tip surface 123 is configured to be slidably brought into contact with and guided by the second guide surface 124 of the tip housing member 102.

In this way, the swing support mechanism is configured in the same manner as in the other embodiment, and the slide aligning mechanism is used in the base end surface 121, the first guide surface 122, the tip end surface 123, and the second guide surface. 124, and the gaps 120, 107 and the like. Regarding the female joint 40C, the large-diameter portion of the female member 111 is mounted on the tubular housing member 42 without any gap, and an annular air passage 116 is formed at the tip of the large-diameter portion, and the pressurized air is applied. From the compressed air port 50, it is introduced into the space 66 via the air passages 51, 117, 116. Therefore, when connecting the male joint 10C of the self-sealing joint 1C and the female joint 40C, both axial centers X and Y are parallel to each other via the swing of the valve structure 12A by the swing support mechanism of the male joint 10C. In addition, both axial centers X and Y are automatically centered through the centering function of the slide centering mechanism of the male joint 10C.

In the above-described another embodiment, the case where the swing support mechanism is provided in the male joint 10B and the slide aligning mechanism is provided in the female joint 40B has been described. It is also possible to provide a slide centering mechanism in the, and a swing support mechanism in the female joint. It should be noted that the above embodiment is merely an example, and the structure of the swing support mechanism, the slide aligning mechanism, the structure of the housing and the valve assembly, and the structure of the poppet valve and the spool valve deviate from the spirit of the present invention. It is possible that various changes are made to the extent that they are not.

[Brief description of drawings]

FIG. 1 is a sectional view of a self-sealing joint according to an embodiment in a separated state.

FIG. 2 is a cross-sectional view of the connection start state of the self-sealing joint.

FIG. 3 is a cross-sectional view showing a state where the self-sealing joint is being connected.

FIG. 4 is a sectional view of the self-sealing joint in a completed connection state.

FIG. 5 is an explanatory view of the operation of the self-sealing joint.

FIG. 6 is a cross-sectional view of a female joint of a self-sealing joint according to a modified example.

FIG. 7 is a cross-sectional view of a self-sealing joint according to another embodiment in a separated state.

FIG. 8 is a view corresponding to FIG. 7 of a self-sealing joint according to a modified example of the another embodiment.

[Explanation of symbols]

 1,1B, 1C Self-sealing joint 10,10B, 10C Male joint 40,40A, 40B, 40C Female joint 32 Poppet valve 33,63 Spool valve 11,103 Housing 44 Housing 70,72,92,105 Partial spherical surface 71,73 , 106 Spherical seat member 66, 79, 80, 113, 120 Gap 75, 95, 114, 121 Base end surface 77, 115, 123 Front end surface 76, 78, 122, 124 Guide surface

Claims (6)

[Scope of utility model registration request] 1. A female joint having a valve mechanism for opening and closing the fluid passage, a fluid passage connected to the fluid passage of the female joint, and a valve mechanism opening and closing the fluid passage, and detachably connected to the female joint. In the self-sealing joint including a male joint, the female joint includes a housing, a valve assembly housed in the housing and incorporating the valve mechanism, and the valve assembly at a point on an axis thereof. A swing support mechanism for swingably swinging in all directions with respect to the housing by a predetermined small angle with respect to the housing, and a valve structure supported by the swing support mechanism in a direction orthogonal to the axis thereof. A self-sealing joint, further comprising: a slide centering mechanism that is supported by a housing so as to be movable by a predetermined small distance. 2. The swing support mechanism includes a first partial spherical surface formed on a rear end surface of the valve assembly, a first spherical seat member that is in spherical contact with the first partial spherical surface, and an axial direction of the valve assembly. The self-sealing device according to claim 1, further comprising: an annular second partial spherical surface formed on an outer peripheral surface of the intermediate portion; and an annular second spherical seat member that is in spherical contact with the second partial spherical surface. Fittings. 3. A second guide surface, which is formed on a housing and is in flat contact with a rear end surface of the first spherical seat member to guide the rear end surface in a direction orthogonal to the axial center.
The self guide according to claim 2, further comprising: a second guide surface which is formed on the housing and abuts the tip surface of the second spherical seat member in a plane to guide the tip surface in the direction orthogonal to the axial center. Seal fitting. 4. The rocking support mechanism includes an annular first partial spherical surface formed on an outer peripheral surface of a portion of the valve assembly near the rear end, and an annular first spherical seat that abuts the first partial spherical surface. A member, an annular second partial spherical surface formed on an outer peripheral surface of an axially intermediate portion of the valve structure, and an annular second spherical seat member that abuts the second partial spherical surface. The self-sealing joint according to claim 1. 5. A female joint having a valve mechanism for opening and closing the fluid passage, a fluid passage connected to the fluid passage of the female joint, and a valve mechanism opening and closing the fluid passage, and detachably connected to the female joint. In the self-sealing joint including a male joint, the male joint includes a housing, a valve assembly provided in the housing and incorporating the valve mechanism, and the valve assembly is centered on a point on an axis thereof. A swing support mechanism for swingably swinging in all directions with respect to the housing in a predetermined small angle, and a valve structure supported by the swing support mechanism in a direction orthogonal to its axis. A self-sealing joint comprising: a slide centering mechanism that is supported by a housing so as to be movable by a predetermined small distance. 6. A female joint having a valve mechanism for opening and closing the fluid passage, a fluid passage connected to the fluid passage of the female joint, and a valve mechanism opening and closing the fluid passage, and detachably connected to the female joint. In the self-sealing joint including a male joint, one of the male joint and the female joint is a housing, a valve assembly provided in the housing and incorporating the valve mechanism, and an axial center of the valve assembly. A swing support mechanism for swingably swinging in all directions around the upper point at a predetermined small angle with respect to the housing, and the other of the male joint and the female joint is a housing; And a slide centering mechanism that supports the valve structure in the housing so that the valve structure is movable by a predetermined small distance in a direction orthogonal to the axis of the valve structure. Self-sealing joint characterized by.