CN113217731A

CN113217731A - Fluid connector

Info

Publication number: CN113217731A
Application number: CN202110513124.XA
Authority: CN
Inventors: 杨仁慈
Original assignee: Everfit Technology Co ltd
Current assignee: Everfit Technology Co ltd
Priority date: 2020-12-03
Filing date: 2021-05-11
Publication date: 2021-08-06
Anticipated expiration: 2041-05-11
Also published as: CN113217731B; CN215335046U; TW202223277A; TWI751821B

Abstract

The invention provides a fluid connector, comprising a male connector and a female connector, wherein the filling member is contacted with a section of male valve hole in a large area to generate a long-distance surface sealing effect, and the sealing member is matched with the surface sealing effect that the sealing member is contacted with a section of female valve hole in a large area; before the butt joint, in the butt joint process, after the butt joint, in the leaving process or after the leaving process of the male joint and the female joint, the two sections of the joint can achieve the benefits of preventing the fluid from leaking, seeping or leaking.

Description

Fluid connector

Technical Field

The invention relates to a fluid connector which is not easy to leak, leak or seep fluid before, after and during the butt joint of a male joint and a female joint.

Background

The fluid is delivered upstream of the pressurized end and downstream of the low pressure end, and connectors are often provided on the delivery path (e.g., delivery tube) and the receiving path (e.g., receiving tube) to selectively connect or disconnect the delivery path and the receiving path.

Connectors are available which generally comprise a male connector and a female connector, and before or after the mating process, the mating process must be performed with the upstream fluid output closed, otherwise the mating ports of the male and female connectors would discharge fluid; although the fluid delivery is closed by the upstream on-off valve when the male and female connectors are to be disconnected, the fluid remaining in the delivery path (pipe) or the receiving path may leak from the interface of the male connector and/or the female connector, and pollute or affect the environment.

For example, the present inventions in taiwan patent nos. TWI427231 and taiwan patent No. TWI463089 are connectors or couplers, each of which has a valve element in a male joint and a female joint, wherein when the male joint and the female joint are in butt joint, the valve is opened to communicate upstream and downstream fluids, otherwise, the valve is closed to limit the output of the upstream fluids; although the use of an upstream switch valve can be omitted, a distance exists between a valve element (valve) in the male joint and a valve element in the female joint and the butt joint, so that the male joint and the female joint are completely separated, a certain amount of fluid is remained in the joint, and the condition that the fluid does not drip out of the butt joint port is difficult to avoid.

Disclosure of Invention

It is a primary object of the present invention to provide a fluid connector for interfacing and/or interfacing an upstream fluid delivery path with a downstream receiving path.

In order to achieve the purpose, the invention adopts the technical scheme that:

a fluid connector for interfacing and/or interfacing between an upstream fluid delivery path and a downstream receiving path, the fluid connector comprising two male connectors and a female connector;

this public connector includes:

the male connector body is internally provided with a channel hole in the center, one end of the channel hole is provided with a pushing piece, the pushing piece is provided with a pushing pipe, the inside of the pushing pipe is provided with a central hole communicated with the channel hole, one end of the central hole is provided with a section of male valve hole with a reduced aperture, and the central hole end of the section of male valve hole is provided with a stopping end face;

a valve member, installed in the center hole of the push pipe, forming a plug head opposite to the section of the male valve hole, forming a core hole communicated with the center hole opposite to one end of the passage hole inside the plug head, forming a stop ring opposite to the stop end face outside the core hole, one end of the stop ring leaning against the stop end face, the other end forming a displacement space between the center hole and the passage hole, and the surface and the radial inside of the ring body being provided with more than one through hole communicating the core hole and the stop end face;

the filling piece is arranged on the filling head and is a soft rubber elastic body with the outer diameter larger than the aperture of the section of the male valve hole, and the surface of the filling piece is provided with a section of elastic sealing surface which is in surface contact with the section of the male valve hole relative to the aperture wall area of the section of the male valve hole;

a valve compression spring, which is arranged in the central hole of the pushing piece and is positioned on the displacement space at one end of the stop ring of the valve piece, one end of the valve compression spring is supported on the hole wall of the passage hole, and the other end elastically pushes the stop ring, so that the elastic stop surface of the packing piece on the packing head seals the section of the male valve hole under the normal state;

this female joint includes:

the female joint body is internally provided with an assembling hole at the center, the diameter of one end of the assembling hole is reduced, a section of guide hole is formed on the outer diameter of the pushing pipe corresponding to the pushing piece of the male joint, the hole wall of the section of guide hole is provided with a concave ring groove, and an O-shaped ring sealing element is arranged on the concave ring groove;

the diameter of one end of a sleeve hole in the sleeve body is reduced, a section of female valve hole is formed corresponding to the male valve hole of the male connector, an outer convex ring matched with the assembling hole is formed in the radial direction of the sleeve body, a section of sleeving surface matched with the section of guide hole and a pushing end face capable of being pushed by the pushing pipe are formed at one end of the outer convex ring and the outer peripheral surface and the front end of the section of female valve hole respectively, and the sleeving surface is contacted with the O-shaped ring sealing element to form sealing;

a valve core rod arranged in the assembling hole and provided with a tube body, wherein one end of the tube body forms a core rod extending into the sleeve hole of the sliding sleeve, the periphery of the other end of the tube body is provided with a fixing part fixedly arranged at the other end of the assembling hole, a sliding space is formed between the fixing part and the outer convex ring of the sliding sleeve, a tube hole in the tube body is communicated with the sleeve hole of the sliding sleeve through more than one through hole arranged on the tube wall, in addition, one end of the core rod in the sleeve hole is expanded in rod diameter, and a valve plug head is formed opposite to one section of the female valve hole;

the valve plug piece is arranged on the valve plug head and is a soft rubber elastic body with the outer diameter larger than the aperture of the section of the female valve hole, and the surface of the soft rubber elastic body opposite to the section of the female valve hole is provided with a section of elastic sealing surface in surface contact with the section of the female valve hole;

a sliding sleeve compression spring, which is arranged in the assembling hole and positioned on the sliding space, one end of the sliding sleeve compression spring is supported on the fixing part of the valve body core rod, the other end elastically pushes the outer convex ring of the sliding sleeve, so that the sleeving surface part of the sliding sleeve is maintained on the section of guide hole to be contacted with the O-shaped ring sealing element to form sealing, and the section of main valve hole is sealed by the elastic sealing surface of the valve plug element under the normal state.

In the fluid connector, an internal threaded hole is formed at one end of the passage hole of the male connector body, and a section of external thread is arranged on the pushing piece body relative to the internal threaded hole.

The fluid connector is characterized in that the hole length of the section of the male valve hole is 0.5-1.5 times of the hole radius, and the sealing area of the elastic sealing surface of the sealing component contacting the section of the male valve hole is 1/2-1 times of the hole wall area of the section of the male valve hole.

The fluid connector described above, wherein the packing head of the valve member has a stepped cylindrical body, at least one annular groove is formed on a body portion of the cylindrical body, and the valve member is placed in a molding die and the packing member is overmolded on a surface of the cylindrical body.

The fluid connector described above, wherein the length of the bore of the section of the female valve bore is 0.5 to 1.5 times the bore radius, and the sealing area of the resilient sealing surface of the plug member contacting the section of the female valve bore is 1/2 to 1 times the bore wall area of the section of the female valve bore.

The fluid connector is characterized in that the valve plug of the valve body core rod is provided with a round convex column in a step shape, at least one annular concave groove is formed in the body part of the round convex column, the valve body core rod is arranged in a molding mould, and the plug piece is coated and molded on the surface of the round convex column.

In the fluid connector, a neck is formed between the filling head of the valve element and the stop ring, a ring groove is concavely arranged on the surface of the neck, an O-shaped sealing member is arranged on the ring groove, and the hole length of the section of the male valve hole extends over the O-shaped sealing member.

In the fluid connector, the plug member is disposed on the plug of the plug, a concave ring groove is disposed on the surface of the plug at the inner edge of the plug member, an O-ring seal member is disposed on the concave ring groove, and the length of the female valve hole extends beyond the O-ring seal member.

When the upstream fluid under pressure is connected to the downstream receiving path through the fluid connector via the delivery path, only the male connector and the female connector are assembled on the delivery path and the receiving path, respectively; before the male joint is butted with the female joint, because the section of the male valve hole of the male joint is sealed by the filling piece on the valve piece, the sleeve joint face part and the section of the female valve hole on the sliding sleeve of the female joint are sealed by the O-shaped ring sealing piece and the plugging piece, fluid on the conveying path and fluid possibly existing on the receiving path can be prevented from leaking or leaking by the control of the male joint and the female joint; when the male connector and the female connector start to be butted, the pushing pipe of the pushing piece pushes the sliding sleeve towards the assembly hole on the pushing end surface of the sliding sleeve in a pressing and pushing sliding action, so that the valve plug at the front end of the core rod of the valve body core rod extrudes the valve piece to move inwards towards the channel hole in the process that the section of the female valve hole of the sliding sleeve leaves the plug piece, the O-shaped ring sealing piece is switched to the surface of the pushing pipe for sealing, and the section of the male valve hole is sealed by the filling piece and the plug piece at the same time, so that no fluid leakage or seepage path exists in the butting process; when the male joint and the female joint are in butt joint, the pushing pipe keeps in a state of being sealed by the O-shaped ring sealing element, the sliding sleeve is continuously pushed into the assembling hole, the section of male valve hole completely leaves the action of the filling piece and the plug valve piece, and the core hole of the valve piece and the pipe hole of the valve body core rod can be communicated with each other through the through hole and the through hole so that the upstream fluid is conveyed to the downstream; otherwise, the butt joint of the male joint and the female joint moves away in a reverse direction, the valve compression spring pushes back the valve element and the sliding sleeve compression spring pushes back the sliding sleeve, so that the leaving process and/or the leaving completion can be realized, and no fluid seepage, leakage or outflow exists;

the integral structure of the male connector and the female connector has the advantages that the filling piece is contacted with the section of the male valve hole in a large area to generate a long-distance surface sealing effect, and the sealing effect is matched with the surface sealing effect that the sealing piece is contacted with the section of the female valve hole in a large area, so that the section of the male valve hole and the sealing piece can form sealing when the section of the female valve hole leaves the sealing piece, or the section of the male valve hole can be continuously and uninterruptedly exchanged under the state that the sealing piece and the filling piece are simultaneously sealed in the process that the section of the female valve hole returns to the sealing piece, and the section of the male valve hole is sealed by the returning action of the filling piece; before the butt joint, in the butt joint process, after the butt joint, in the leaving process or after the leaving process of the male joint and the female joint, the two sections of the joint can achieve the benefits of preventing the fluid from leaking, seeping or leaking.

The present invention provides a fluid connector, wherein an inner threaded hole is formed at one end of the passage hole of the male connector body, and the pushing member body is provided with a section of external threads corresponding to the inner threaded hole, so that the external threads of the pushing member can be screwed into the inner threaded hole of the male connector body, and the valve compression spring is simply installed in the valve displacement space of the central hole of the pushing member.

A further advantage of the present invention is to provide a fluid connector wherein the length of the segment of the male valve bore is 0.5 to 1.5 times the radius of the bore and the resilient gasket surface of the packing contacts the sealing area of the segment of the male valve bore which is 1/2 to 1 of the wall area of the segment of the male valve bore; when the male joint and the female joint are in butt joint or leave operation, the filling piece seals the section of the male valve hole in a large area and a long distance, so that the filling piece and the plug door piece can be simultaneously positioned on the section of the male valve hole to perform uninterrupted exchange to seal the male valve hole and the female valve hole.

Another advantage of the present invention is to provide a fluid connector, wherein the packing head of the valve member has a stepped cylindrical body, the body of the cylindrical body is formed with at least one annular groove, and the valve member is mounted in a molding die and over-molded on the surface of the cylindrical body, whereby the plastic of the packing member is engaged in the annular groove, so that the packing member is tightly coupled to the packing head without being withdrawn.

Yet another advantage of the present invention is to provide a fluid connector wherein the length of the bore of the section of the female valve bore is 0.5 to 1.5 times the radius of the bore, and the resilient sealing surface of the plug member contacts the sealing area of the section of the female valve bore is 1/2 to 1 of the bore wall area of the section of the female valve bore; when the male joint and the female joint are in butt joint or leave operation, the plug member closes the section of the female valve hole in a large area and a long distance, and the plug member can simultaneously contact the male valve hole and the female valve hole to leave the female valve hole or return to the female valve hole, so that the possibility of fluid seepage is completely blocked.

A further advantage of the present invention is to provide a fluid connector, wherein the valve plug of the valve plug has a stepped-shaped convex cylinder, the body of the convex cylinder is formed with at least one annular concave groove, and the valve plug is mounted in a molding mold and is coated on the surface of the convex cylinder, so that the valve plug is tightly fixed on the valve plug without loosening due to the fact that plastic of the valve plug does not enter the annular concave groove.

Still another advantage of the present invention is to provide a fluid connector, wherein a neck is formed between the plug head of the valve member and the stop ring, a ring groove is concavely formed on a surface of the neck, an O-shaped seal member is disposed on the ring groove, and the length of the male valve hole extends beyond the O-shaped seal member, so that the O-shaped seal member seals the male valve hole before and after the butt joint of the male joint and the female joint, thereby assisting in improving the ability of the plug member to seal the male valve hole against the leakage of high-pressure fluid.

Still another advantage of the present invention is to provide a fluid connector, wherein the valve plug of the valve plug has a plug member, the surface of the body of the valve plug at the inner edge of the plug member has a concave ring groove, the concave ring groove has an O-ring-shaped sealing ring member, and the length of the female valve hole is greater than the length of the O-ring-shaped sealing ring member, so that the O-ring-shaped sealing ring member can seal the female valve hole before and after the male connector is connected with the female connector, thereby assisting in improving the ability of the plug member to seal the female valve hole against the leakage of high-pressure fluid.

Drawings

Fig. 1 is an external perspective view of the present invention.

Fig. 2 is an exploded view of the male connector of the present invention.

FIG. 3 is a cross-sectional view of a male connector structure of the present invention.

Fig. 4 is an exploded view of the female coupling structure of the present invention.

FIG. 5 is a cross-sectional view of a female connector structure of the present invention.

Fig. 6 is a sectional view showing a structure before the male and female connectors of the present invention are butted.

FIG. 7 is a structural sectional view showing the butt joint process of the male and female joints according to the present invention.

FIG. 8 is a sectional view showing the structure of the female and male connectors of the present invention when they are completely mated.

Fig. 9 is an exploded view of another embodiment of the male connector of the present invention.

FIG. 10 is a cross-sectional view of another embodiment of the male connector of the present invention.

Fig. 11 is an exploded view of another embodiment of the female connector of the present invention.

FIG. 12 is a sectional view of another embodiment of the female connector of the present invention.

Fig. 13 is a sectional view showing a structure before mating of another embodiment of the male and female connectors according to the present invention.

Description of reference numerals: the conveyance path X1; receive path X2; flow direction (upstream) E1; flow direction (downstream) E2; a fluid connector 1; a male connector 10; the male connector body 11 passage hole 110; an internally threaded hole 111; a pusher 12; a push-out tube 120; a central aperture 121; a male valve aperture 122; hole lengths L1, L10; hole radius R1; a stop end face 123; external threads 124; a valve element 13; a packing head 130; a cylinder 130A; the ring groove 130B; a core hole 131; a stop ring 132; a displacement space 133; a through hole 134; a neck 135; the ring groove 136; an O-ring seal 137; a packing member 14; a resilient check surface 140; a valve compression spring 15; a female joint 20; a female joint body 21; an assembly hole 210; a guide hole 211; a concave ring groove 212; an O-ring seal 213; a sliding sleeve 22; a trepan 220; a female valve bore 221; hole lengths L2, L20; hole radius R2; an outer convex ring 222; a socket face 223; a push end surface 224; a valve body core rod 23; a tube body 230; a core bar 231; a fixed portion 232; a C-shaped clasp 232A; a glide space 233; the tube aperture 234; a perforation 235; a valve plug 236; a circular post 236A; annular recessed groove 236B; a concave ring groove 237; an O-ring seal 238; a stopper member 24; a resilient mating surface 240; the sliding sleeve compresses the spring 25.

Detailed Description

The present invention to achieve the above objects, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, wherein:

a fluid connector is suitable for a material injection head and a material receiving head of a material injection system, and transmits upstream fluid under pressure to downstream for receiving through the connector; it is also applicable to the connection of two fluid carrying pipes, delivering upstream fluid under pressure to downstream, and in the present description and in the appended claims, the terms "upstream" and "downstream" are used analogously to refer to the direction of flow of fluid under pressure through a fluid connector, and this direction of flow is indicated by arrows E1 and E2 in fig. 6, 7 and 8. Moreover, the fluid connector is used on different objects, and can be installed on different objects only by modifying the assembly structure, and the butt joint type is not limited to plug-in, buckling or screw-threaded locking; hereinafter, the fluid connector is used in a plug-in type on a material injection system (in fig. 6, 7, and 8, the material injection head and the material receiving head are shown by imaginary lines, which are not described again) as an embodiment, and the present invention is described in detail:

a fluid connector 1, fig. 1 and 6, for the connection and/or disconnection of an upstream fluid delivery path X1 and a downstream receiving path X2 under pressure, the fluid connector 1, fig. 1, comprising two male connectors 10 and a female connector 20;

the male connector 10, as shown in fig. 2 and 3, includes:

a male connector body 11, having a channel hole 110 in the center, wherein one end of the channel hole 110 is provided with a pushing member 12, the pushing member 12 is provided with a pushing tube 120, the pushing tube 120 is internally provided with a central hole 121 communicated with the channel hole 110, one end of the central hole 121 is provided with a segment of male valve hole 122 with a reduced aperture, and a stop end face 123 is formed at the end of the central hole 121 of the segment of male valve hole 122;

a valve element 13 disposed in the central hole 121 of the push tube 120, a plug head 130 is formed opposite to the first segment of the male valve hole 122, a core hole 131 communicating with the central hole 121 is formed inside the opposite end of the plug head 130 opposite to the channel hole 110, a stop ring 132 is formed outside the core hole 131 opposite to the stop end face 123, one end of the stop ring 132 is abutted against the stop end face 123, a displacement space is formed between the central hole 121 and the channel hole 110 at the other end, and more than one through hole 134 communicating the core hole 131 with the stop end face 123 is formed on the surface and the radial inside of the ring body;

a packing member 14, which is a rubber-plastic soft rubber elastomer with an outer diameter slightly larger than the aperture of the section of the male valve hole 122 and is provided with an elastic sealing surface in surface contact with the section of the male valve hole 122, corresponding to the aperture area of the section of the male valve hole 122;

a valve compression spring 15 disposed in the central hole 121 of the pushing member 12 and located on the displacement space 133 at one end of the stop ring 132 of the valve element 13, one end of the valve compression spring is supported on the end surface of the expanded hole wall of the passage hole 110, and the other end of the valve compression spring elastically pushes against the stop ring 132, so that the elastic stop surface 140 of the packing member 14 on the packing head 130 normally seals the section of the male valve hole 122;

the female connector 20, as shown in fig. 4 and 5, includes:

a female connector body 21, wherein an assembly hole 210 is formed in the center of the female connector body, one end of the assembly hole 210 has a reduced diameter, a section of guide hole 211 is formed corresponding to the outer diameter of the pushing tube 120 of the pushing member 12 of the male connector 10 (in cooperation with fig. 3), the hole wall of the section of guide hole 211 has a concave ring groove 212, and an O-ring sealing member 213 is disposed on the concave ring groove 212;

a sliding sleeve 22, one end of a sleeve hole 220 in the sleeve body is reduced in diameter, a section of female valve hole 221 is formed corresponding to the male valve hole 122 of the male connector 10 (matching with fig. 3), the radial direction of the sleeve body is formed, an outer convex ring 222 matching with the assembly hole 210 is formed, one end of the outer convex ring 222, the outer peripheral surface and the front end of the section of female valve hole 221 are respectively formed with a section of sleeve surface 223 matching with the section of guide hole 221 and a pushing end surface 224 capable of being pushed (moved inwards) by the pushing pipe 120, and the sleeve surface 223 is contacted with the O-ring sealing element 213 to form a seal;

a valve plug 23 disposed in the assembling hole 210, having a tube 230, one end of the tube 230 forming a plug 231 extending into the sleeve hole 220 of the sliding sleeve 22, and the other end having a fixing portion 232 fixed at the other end of the assembling hole 210 (preferably, the fixing portion 232 is fixed on the hole wall of the assembling hole 210 by using a C-shaped buckle 232A), a sliding space 233 being formed between the fixing portion 232 and the outer collar 222 of the sliding sleeve 22, a tube hole 234 in the tube 230 communicating with the sleeve hole 220 of the sliding sleeve 22 via more than one through hole 235 disposed on the tube wall, and a valve plug 236 being formed at one end of the plug 231 in the sleeve hole 220 and corresponding to the section of the female valve hole 221;

a plug member 24, which is disposed on the valve plug 236, is an elastic rubber-plastic soft rubber elastomer with an outer diameter slightly larger than the aperture of the section of the female valve hole 221, and has a section of elastic sealing surface 240 in surface contact with the section of the female valve hole 221, opposite to the section of the female valve hole 221;

a sliding sleeve compression spring 25, disposed in the assembling hole 210 and located on the sliding space 233, one end of which is supported on the fixing portion 232 of the valve body core rod 23, and the other end elastically pushes the outer convex ring 222 of the sliding sleeve 22, so that the sleeve surface portion 223 of the sliding sleeve 22 is maintained on the section of guiding hole 211 to contact with the O-ring sealing member 213 to form a seal, and the section of female valve hole 221 is normally sealed by the elastic sealing surface 240 of the plug member 24;

as shown in fig. 6, when fluid under pressure flows in the upstream direction E1 through the delivery path X1 to the downstream receiving path X2 through the fluid connector 1, the male connector 10 and the female connector 20 are only assembled to the delivery path X1 and the receiving path X2, respectively; before the male connector 10 is abutted with the female connector 20, since the section of the male valve hole 122 of the male connector 10 is sealed by the packing member 14 on the valve member 13, the sleeve surface portion 223 and the section of the female valve hole 221 on the sliding sleeve 22 of the female connector 20 are sealed by the O-ring seal 213 and the plug member 24, so that the fluid in the flow direction E1 on the delivery path X1 and the fluid in the flow direction E2 possibly existing on the receiving path X2 are both prevented from leaking or leaking out under the control of the male connector 10 and the female connector 20; as shown in fig. 6 and 7, when the male connector 10 and the female connector 20 start the butt joint and the butt joint process, the sliding action of the pushing tube 120 of the pushing element 12 pushing the sliding sleeve 22 toward the assembling hole 210 on the pushing end surface 224 of the sliding sleeve 22 can cause the valve plug 236 (with the plug 24) at the front end of the core rod 231 of the valve body core 23 to press the valve element 13 to displace inward toward the passage hole 110 during the process that the section of the female valve hole 221 of the sliding sleeve 22 leaves the plug 24, so that the O-ring sealing element 213 is exchanged to the sliding surface of the pushing tube 120 to seal, and the section of the male valve hole 122 is sealed (sealed) by the packing element 14 and the plug 24 at the same time, so that no fluid leakage or seepage path exists during the butt joint process; as shown in fig. 7 and 8, at the stage of completing the butt joint between the male connector 10 and the female connector 20, the pushing tube 120 is maintained in a state of being sealed by the O-ring seal 213, and continues to push the sliding sleeve 22 into the assembling hole 210 until it is terminated, the section of the male valve hole 122 is completely separated from the action of the packing member 14 and the plug member 24, and the core hole 131 of the valve member 13 and the tube hole 234 of the valve body core 23 can communicate with each other through the through hole 134 and the through hole 235, so that the fluid upstream of the flow direction E1 is transported to the downstream of the flow direction E2; on the contrary, corresponding to fig. 7 and 6, the opposite actions of the connection between the male connector 10 and the female connector 20 are separated, the valve compression spring 15 pushes back the valve element 13 and the sliding sleeve compression spring 25 pushes back the sliding sleeve 22, so that the separation process and/or the separation is completed without fluid leakage, leakage or outflow;

as shown in fig. 3 and 5, the integral structure of the male connector 10 and the female connector 20, by means of the large-area contact of the packing member 14 with the section of the male valve hole 122, a long-distance surface sealing effect is generated, and in cooperation with the surface sealing effect of the large-area contact of the plugging member 24 with the section of the female valve hole 221, as shown in fig. 7, the sealing effect can be formed by the section of the male valve hole 122 and the plugging member 24, which can be exchanged immediately when the section of the female valve hole 221 leaves the plugging member 24, or, in the process of returning the section of the female valve hole 221 to the plugging member 24, the section of the male valve hole 122 can be continuously and uninterruptedly exchanged by the plugging member 24 and the packing member 14, as shown in fig. 7 to fig. 6, and the section of the male valve hole 122 can be closed by the returning action of the packing member 14; before, during, after, or after the butt joint of the male and

female joints

10 and 20, the two sections can prevent the leakage of fluid.

According to the above embodiment, as shown in fig. 2 and 3, an internal threaded hole 111 is formed at one end of the passage hole 110 of the male connector body 11, and the body of the pushing member 12 is provided with a section of external threads 124 corresponding to the internal threaded hole 111, which can be screwed and fixed on the internal threaded hole 111 of the male connector body 11 by the external threads 124 of the pushing member 12, so as to easily install the valve compression spring 15 on the displacement space 133 of the valve element 13 in the central hole 121 of the pushing member 12.

According to the above embodiment, as shown in fig. 3, the hole length L1 of the segment of the male valve hole 122 is 0.5 to 1.5 times the distance of the hole radius R1 (i.e., L1 is 0.5 to 1.5R1), and the sealing area of the elastic sealing surface 140 of the packing member 14 contacting the segment of the male valve hole 122 is 1/2 to 1 of the hole wall area (pi × R1 × R1 × L1) of the segment of the male valve hole 122; as shown in fig. 6, 7 and 8, when the male connector 10 is engaged with or disengaged from the female connector 20, the packing 14 seals the segment of the male valve hole 122 over a large area and a long distance, so that the packing 14 and the plug 24 can be simultaneously positioned on the segment of the male valve hole 122 (as shown in fig. 7) to perform the action of closing the male and female valve holes 122 and 221 without disconnection.

According to the above embodiment, as shown in fig. 2 and 3, the plugging head 130 of the valve element 13 has a stepped cylindrical body 130A, the body of the cylindrical body 130A is formed with at least one ring groove 130B, and the valve element 13 is disposed in a plastic injection molding mold (not shown), and the plugging member 14 is overmolded on the surface of the cylindrical body 130A, so that the plugging member 14 is tightly bonded to the plugging head 130 without being removed by the plastic material of the plugging member 14 being caught in the ring groove 130B.

According to the above embodiment, as shown in fig. 4 and 5, the length L2 of the section of the female valve hole 221 is 0.5 to 1.5 times the hole radius R2 (i.e., L2 is 0.5 to 1.5R2), and the sealing area of the elastic sealing surface 240 of the cock member 24 contacting the section of the female valve hole 221 is 1/2 to 1 of the hole wall area (pi × R2 × R2 × L2) of the section of the female valve hole 221; as shown in fig. 6, 7 and 8, when the male connector 10 is mated with or separated from the female connector 20, the plug member 24 seals the section of the female valve hole 221 over a large area and a long distance, and the plug member 24 can completely separate from the female valve hole 221 or completely return to the female valve hole 221 in a manner that the plug member 24 simultaneously contacts the male valve hole 122 and the female valve hole 221 (as shown in fig. 7), thereby completely blocking the possibility of fluid leakage.

According to the above embodiment, as shown in fig. 4 and 5, the valve plug 236 of the valve plug 23 has a stepped-shaped convex cylinder 236A, the body of the convex cylinder 236 is formed with at least one annular concave groove 236B, and the valve plug 23 is placed in a plastic injection molding mold (not shown) and the plug member 24 is overmolded on the surface of the convex cylinder 236, so that the plug member 24 is tightly fixed on the valve plug 236 without loosing due to the fact that the plastic of the plug member 24 does not enter the annular concave groove 236B.

According to the above embodiment, as shown in fig. 9 and 10, a neck 135 is formed between the plug head 130 of the valve element 13 and the stop ring 132, a ring groove 136 is recessed on the surface of the neck 135, an O-ring seal 137 is disposed on the ring groove 136, and the hole length L10 of the segment of the male valve hole 122 extends beyond the O-ring seal 137, as shown in fig. 13, so that before and after the butt joint of the male joint 10 and the female joint 20, the O-ring seal 137 can stop the male valve hole 122 to improve the capability of the sealing member 14 to seal the male valve hole 122 against the leakage of high-pressure fluid.

According to the above-mentioned embodiment, in fig. 11 and 12, the plug member 24 is disposed on the valve plug 236 of the valve body plug 23, the surface of the body of the valve plug 236 at the inner edge of the plug member 24 is recessed with a recessed ring groove 237, the recessed ring groove 237 is disposed with an O-ring-shaped sealing ring 238, and the hole length L20 of the section of the female valve hole 221 extends beyond the O-ring-shaped sealing ring 238, as shown in fig. 13, so that before and after the butt joint of the male connector 10 and the female connector 20, the O-ring-shaped sealing ring 238 can seal the female valve hole 221, and assist in lifting the plug member 24 to seal the female valve hole 221 against the leakage of high-pressure fluid.

The foregoing description is intended to illustrate rather than limit the invention, and those skilled in the art will appreciate that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A fluid connector for interfacing and/or interfacing between an upstream fluid delivery path and a downstream receiving path, the fluid connector comprising two male connectors and a female connector;

this public connector includes:

this female joint includes:

2. The fluid connector of claim 1, wherein the passage hole of the male connector body has an internally threaded hole at one end, and the pushing member body has an external thread formed opposite to the internally threaded hole.

3. The fluid connector of claim 1 wherein the length of the segment of the male valve bore is 0.5 to 1.5 times the bore radius and the sealing area of the resilient sealing surface of the packing member contacting the segment of the male valve bore is 1/2 to 1 times the bore wall area of the segment of the male valve bore.

4. The fluid connector of claim 1 wherein the packing head of the valve member has a stepped shaped cylindrical body with at least one annular groove formed in a body portion thereof, and the valve member is placed in a molding die and the packing member is overmolded on a surface of the cylindrical body.

5. The fluid connector of claim 1, wherein the length of the section of the female valve bore is 0.5 to 1.5 times the bore radius, and the sealing surface of the plug member contacts the section of the female valve bore with a sealing area that is 1/2 to 1 times the bore wall area of the section of the female valve bore.

6. The fluid connector of claim 1 wherein the valve plug of the valve body core pin has a stepped-shaped convex cylinder with a body portion formed with at least one annular concave groove, and the valve body core pin is placed in a molding die and over-molded on the surface of the convex cylinder.

7. The fluid connector of claim 1, wherein a neck is formed between the packing head of the valve member and the stop ring, the neck surface is recessed with an annular groove, the annular groove is provided with an O-ring seal, and the length of the male valve bore extends beyond the O-ring seal.

8. The fluid connector of claim 1, wherein the plug member is disposed on the valve plug of the valve plug, the surface of the body portion of the valve plug at the inner edge of the plug member is recessed with a recessed ring groove, the recessed ring groove is disposed with an O-ring seal, and the length of the female valve bore extends beyond the O-ring seal.