KR20090050064A - Male coupling for connecting to female threaded coupling - Google Patents

Abstract

A coupling assembly is disclosed that includes a first and a second member that can be arranged between an uncoupled position and a coupled position. The first member has a receptacle sized to receive at least a portion of the inner thread and the second member provided therein. The second member has an outer surface. A latching locking member is disposed around the outer surface of the second member and configured to move between the locking and unlocking positions. The latching locking member also has a retaining formation that is biased to the locking position and configured to mesh and engage with the internal threads of the first member. Upon insertion of the second member into the first member, the retaining formation of the latching locking member gradually engages with the internal threads of the first member, thereby locking the first and second members together.

Coupling assembly, male coupling, female threaded port, latching locking member, retaining formation.

Description

Mail coupling for connection to female threaded coupling {MALE COUPLING FOR CONNECTING TO FEMALE THREADED COUPLING}

Cross Reference with Related Application

This application claims the benefit of US Provisional Application No. 60 / 821,317, filed August 3, 2006, the disclosure of which is incorporated herein by reference in its entirety.

The present invention relates to a fluid coupling, and more particularly to a fluid coupling configured to be connected to a female threaded coupling.

Coupling assemblies are known in the art for the delivery of gases or fluids that can be fixed together by axial movement of the male coupling into the female coupling. In typical applications, the mail coupling and the female coupling function as adapters between devices such as pumps and flexible conduits such as hoses. While several methods are commonly used to connect the mail coupling to a flexible conduit such as a barbed hose adapter, the female coupling is typically connected to a standard female threaded port in the device. .

Manufacturers of coupling assemblies integrate complexity and cost directly into their customers' devices (known as "direct porting"), eliminating the need for standard female threaded ports. Tried to reduce However, customers are often reluctant to integrate a female coupling from a specific coupling manufacturer directly into their device, because doing so makes it more difficult to convert back to a standard female threaded port. In addition, the customer may be reluctant to integrate a specific manufacturer's female coupling directly into the device, because doing so requires the customer to purchase all their replacement hoses from the coupling manufacturer. . In order to improve on the current design of the coupling assembly, in particular, it is possible to reduce the complexity and cost of the coupling assembly, as well as to make the coupling compatible with standard fittings (eg standard female threaded ports). There is a constant effort to design.

A coupling assembly is disclosed that includes a first and a second member that can be arranged between an uncoupled position and a coupled position. The first member has a receptacle sized to receive at least a portion of the inner thread and the second member provided therein. The second member has an outer surface. A ratcheting rocking member is disposed around the outer surface of the second member and configured to move between the locking and releasing positions. The latching locking member also has a retaining formation that is biased to the locked position and configured to mesh and engage with the internal threads of the first member. Upon insertion of the second member into the first member, the retaining formation of the latching locking member gradually engages with the internal threads of the first member, thereby locking the first and second members together.

A mail coupling for connecting to a female threaded port having a receptacle with an internal thread is disclosed. The male coupling includes a body having a leading portion, a trailing portion and an outer surface. The tip is sized to be received by the receiver of the female threaded portion. The mail coupling also includes a plurality of locking member segments disposed around the body and configured to pivot between the locking and unlocking positions, each locking member segment being meshed with an internal thread of the female threaded port. Has a retaining formation configured to engage. The mail coupling further includes an elastic biasing element configured to bias each locking member segment to its locking position. Upon insertion of the male coupling into the female threaded port, the retaining formation of each locking member segment gradually engages with the internal thread of the female threaded port, thereby bringing the male and female threaded ports together. Lock.

It will be appreciated that the illustrated borders of elements in the figures represent an example of the borders. Those skilled in the art will recognize that a single element may be designed as a plurality of elements or that multiple elements may be designed as a single element. Elements shown as inner features can be implemented as outer features, and elements shown as outer features can also be implemented as inner features.

In the following description and the annexed drawings, like reference numerals refer to the same elements throughout the drawings and the description. The drawings are not drawn to scale, and the proportions of some of the elements are exaggerated for ease of explanation.

1A and 1B show cross-sectional views of one embodiment of a coupling assembly respectively in its uncoupled position and in a coupled position.

2A-2D show cross-sectional views of the coupling assembly 10 at various stages during the coupling operation.

3A-3C show cross-sectional views of the coupling assembly 10 at various stages during the uncoupling operation.

4A shows a perspective view of one embodiment of a male coupling member 400 that is configured to be connected to a female threaded coupling 402.

4B shows a cross-sectional view of a mail coupling 400 that is configured to be connected to the female threaded coupling 402, where the mail coupling 400 and the female threaded coupling 402 have their own ends. Shown in the coupled position.

4C shows a cross-sectional view of the male coupling 400 and the female threaded coupling 402 in the coupled position.

5A-5D show cross-sectional views of portions of the male coupling 400 and the female threaded coupling 402 at various stages during the coupling operation.

6A-6C show cross-sectional views of portions of the male coupling 400 and the female threaded coupling 402 at various stages during an uncoupling operation.

7 shows a cross-sectional view of a portion of another embodiment of a coupling assembly 700 in its coupled position.

In the following description, some terminology will be used only for convenience of reference and not limitation. The terms "forwardly" and "backwardly" for each component of the coupling assembly will refer to the direction toward the coupling direction and the direction away from the coupling direction, respectively. The terms "to the right" and "to the left" will refer to the direction in the figures in which the term is used. The terms "inwardly" and "outwardly" will refer to directions toward the geometric centerline or longitudinal axis of the coupling assembly and away from the geometric centerline or the longitudinal axis of the coupling assembly, respectively. The terms "upwardly" and "downwardly" will refer to the direction as taken in the figures in which the term is used. All of the above terms include their usual derivatives or synonyms.

Cross-sectional views of one embodiment of the coupling assembly 10 shown in the uncoupled position and the coupled position, respectively, are shown in FIGS. 1A and 1B. The coupling assembly 10 includes a first member 12 and a second member 14 that work together as a push-to-connect type coupling assembly discussed in more detail below. The first member 12 generally functions as a "female" member of the coupling assembly 10 and the second member 14 generally functions as a "mail" member of the coupling assembly 10, The first member 12 is configured to receive the second member 14. Both the first and second members 12, 14 share the same central longitudinal axis A when they are in the coupled position as shown in FIG. 1B. In one embodiment, the first and second members 12, 14 may be formed of carbon steel. In alternative embodiments, the first and second members 12, 14 may be formed of other materials such as brass, aluminum, stainless steel, and plastic.

In the illustrated embodiment, the first member 12 includes a receiving portion 16 having a receiving end 18, a remote portion (not shown) having a remote end (not shown), and a fluid flowing through it. And a female threaded coupling, such as a female threaded port, comprising a passage 20 extending between the receiving end 18 and the remote end. The remote portion of the first member 12 is provided with an external thread for attachment of a separate component (not shown) to the internal thread. Alternatively, the female threaded port can be integrated directly into a device such as a pump, manifold, or the like. In an alternative embodiment (not shown), the first member 12 may comprise other suitable connection means for attachment to a separate component (not shown).

With continued reference to FIGS. 1A and 1B, the first member 12 includes a first chamfered surface 22 extending rearwardly and inwardly from the receiving end 18. The set of inner threads 24 extends rearward from the first chamfered surface 22 and the first cylindrical inner surface 26 extends rearward from the inner threads 24a-i. In the illustrated embodiment, the inner thread 24 has a triangular profile in cross section and includes nine threads 24a-i. In alternative embodiments (not shown), the internal threads 24 may take the form of other profiles (eg, trapezoids, squares, or rectangles) in cross section and may include any number of threads. Can be. In another alternative embodiment (not shown), the first member 12 may not include the first chamfered face 22.

The remote portion of the first chamber 12 includes a second cylindrical inner surface 30 having an inner diameter smaller than the first inner surface 26. A tapered surface 32 that meets the first inner surface 26 extends forwardly and outwardly from the second inner surface 30.

As shown in FIGS. 1A and 1B, the second member 14 has a trailing end (not shown) with a trailing end (not shown) having a leading end 38. ), A collar 34 that separates the < RTI ID = 0.0 > A passage 40 for allowing fluid to flow through it extends from the tip 38 to the rear end (not shown) through the second member 14. In one embodiment (not shown), the rear end of the second member 14 may be connected to a hose nipple that receives the hose. In an alternative embodiment (not shown), the rear end has a counter-thread for receiving a tube which may have an external thread for attachment to another thread of internal components, or which may be soldered to the second member 14. It may be counter-boring.

The tips 36 of the second member 14 are separated from each other by first outwardly facing annular grooves 46 extending radially inwardly from the first and second outer surfaces 42, 44. A first cylindrical outer surface 42 and a second cylindrical outer surface 44. The first groove 46 is at least partially defined by the third cylindrical outer surface 48.

In the illustrated embodiment, the first and second outer surfaces 42, 44 have the same outer diameter of a size accommodated by the second inner surface 30 of the first member 12. In an alternative embodiment (not shown), the first and second outer surfaces 42, 44 are provided such that the first outer surface 42 is received by the second inner surface 30 of the first member 12. As long as they have an outer diameter that is of size, they can have different diameters.

The first outer surface 42 of the second member 14 includes a second outwardly annular groove 50 extending radially inwardly from itself. A support ring 52 made of rigid material, such as plastic, leather, or hard rubber, and an annular seal 54 made of a suitable sealing material, such as neoprene or another elastomeric material, has a second groove 50. Is located within. The annular seal 54 is located in the second groove 50 between the tip 38 of the second member 14 and the support ring 52. The annular seal 54 is sized to be received by the second inner surface 30 of the first member 12 and to seal sealingly engage the second inner surface 30 of the first member 12. The support ring 52 is sized to be received by the second inner surface 30 of the first member 12 and serves to prevent the annular seal 54 from being damaged when the coupling assembly 10 is used in a high pressure application. Do it. In another embodiment (not shown), the support ring 52 can be removed when the coupling assembly is used in a low pressure application. In another alternative embodiment (not shown), the annular seal and the support ring may be received in a groove in the second inner surface 30 of the first member 12, and the first of the second member 14. It is a size that seals with the outer surface.

The coupling assembly 10 also includes a latching locking member configured to lock the first and second members 12, 14 together. In the illustrated embodiment, the latching locking member is in the form of a separate latching locking member segment 56 located within the first groove 46 of the second member 14 and forming together the latching locking member. In one embodiment, the latching locking member includes four locking member segments 56. In alternative embodiments, the latching locking member may comprise different numbers of locking member segments.

As shown in FIGS. 1A and 1B, each locking member segment 56 meshes with the internal thread 24 of the first member 12 when the second member 14 is inserted into the first member 12. And a tapered outer surface 60 and a cylindrical outer surface 58 separated from each other by a retaining formation that is configured to engage and engage, which is discussed in more detail below. In the embodiment shown, the retaining formation is an external partial threaded formation 62 which projects outwardly from the groove 46 beyond the first outer surface 42 of the second member 14. ). The threaded formation 62 is characterized in part because of the fact that the latching locking member consists of the locking member segment 56. Therefore, the partial threaded formation 62 of each locking member segment 56 includes only a portion of the threaded formation. However, it will be appreciated that the locking member segments 56 together form a threaded formation, although the threads may not be adjacent because adjacent locking member segments 56 will have a small space therebetween.

In the illustrated embodiment, the partial threaded formation 62 includes three triangular shaped threads 62a-c in cross section. However, in alternative embodiments (not shown), the partial threaded formation 62 may comprise a different number of threads, and / or the threads mesh with the internal threads 24 of the first member 12. As long as they can be engaged and engaged, the threads can take the form of other shapes (eg, square, rectangular, or trapezoidal) when viewed in cross section. Additionally, in an alternative embodiment (not shown), the retaining formation may be a plurality of discrete radially outwardly extending protrusions or protrusions that can engage the internal threads 24 of the first member 12. It may include. In this embodiment, a number of discrete radially extending protrusions or protrusions may take the form of any shape and as long as they can engage the internal threads 24 of the first member 12. It can be arranged in a pattern of.

In the illustrated embodiment, each locking member segment 56 also includes a front end 64, a rear end 66, and first and second inner surfaces 68, 70. As shown in FIGS. 1A and 1B, the first and second inner surfaces 68, 70 are oriented at an angle B relative to each other, such that the first inner surface 68 and the second inner surface 70 are oriented. An edge is formed between the holes. This edge defines the pivot axis P (extending out of the drawing) to which each locking member segment 56 pivots. The pivot axis P of each locking member segment 56 is spaced apart from the longitudinal axis A of the coupling assembly 10 and oriented perpendicular to the longitudinal axis A. FIG.

Due to the edge defining the pivot axis P, each locking member segment 56 can pivot between a first position (ie, a locking position) and a second position (ie, a release position). In the locked position, the first inner surface 68 abuts the third outer surface 48 of the second member 14 as shown in FIGS. 1A and 1B. In the unlocked position, the locking member segment 56 pivots clockwise about the pivot axis P such that the second inner surface 70 abuts the third outer surface 48 of the second member 14. (Not shown). However, it will be appreciated that the release position does not necessarily require the second inner surface 70 of each locking member segment 56 to abut the third outer surface 48 of the second member 14. Instead, each locking member segment 56 is merely an outer extremity of the partially threaded formation 62 of the locking member segment 56 and an internal thread 24 of the first member 12. It is necessary to pivot clockwise by an amount sufficient to provide clearance between the inner extremity of the.

An outwardly facing groove 72 extending radially inwardly from the outer surface 58 of each locking member segment 56 is provided adjacent the front end 64 of each locking member segment 56. The grooves 72 in the locking member segment 56 together form an annular groove configured to receive an annular elastic biasing element 74. The biasing element 74 surrounding all of the locking member segments 56 is configured to bias the locking member segment 56 to its locking position, and because of its elasticity, i) the locking member segment 56 is released from its own. It can be extended radially outward when moved to position, and ii) returning the locking member segment 56 to its locking position without requiring additional force. In the embodiment shown, the biasing element 74 is an O-ring. In an alternative embodiment, the biasing element 74 is a garter spring, a split retaining ring, or an elastomer or plastic ring.

In an alternative embodiment (not shown), the locking member segment 56 can be rotated 180 ° and positioned in the first groove 46 such that the retaining formation of each locking member segment is reduced to the second member ( And closer to the tip 38 of 14). In this embodiment, the biasing element will be provided in an outwardly directed groove in the locking member segment 56 adjacent to the rear end of the locking member segment 56.

The coupling assembly 10 also includes a release sleeve 76 provided between the locking member segment 56 and the collar 34. The release sleeve 76 includes a sleeve portion 78 having a front end 80 and a flange portion 82 extending radially outward from the sleeve portion 78. Sleeve portion 78 of release sleeve 76 overlaps a portion of first groove 46 and a portion of locking member segment 56. Thus, the locking member segment 56 is retained in the first groove 46 by the biasing element 74 on one side and by the sleeve portion 78 of the release sleeve 76 on the other side. In the illustrated embodiment, the release sleeve 76 has a generally L-shaped profile when viewed in cross section. In an alternative embodiment (not shown), the locking sleeve can take the form of a different profile when viewed in cross section.

The release sleeve 76 is secured on the second outer surface 44 of the body in an axially movable arrangement such that the release sleeve 76 is movable between the rear and front positions. The axial movement of the release sleeve 76 is limited by the collar 34 in the rear direction and by the rearmost partial thread 62c of each locking member segment 56 in the front direction. The release sleeve 76 is in its rear position as shown in FIGS. 1A and 1B.

In order to couple the first and second members 12, 14 together, the second member 14 is the frontmost thread 62a of the partially threaded formation 62 of each locking member segment 56. ) Moves forward (in the direction of arrow C) into the first member 12 until it engages with the innermost thread 24a at the foremost front of the first member 12 (FIG. 2A). Upon continued forward movement of the second member 14, the thread 24a of the first member 12 interacts with the locking member segment 56 to counteract the urging of the biasing element 74. A force is applied to the locking member segment to pivot clockwise (in the direction of arrow D) about the pivot axis P, thereby causing the biasing element 74 to extend radially outward (FIG. 2B). Locking member segment 56 pivots clockwise about pivot axis P until it is camming or "latching" over the apex of first thread 24a. As soon as this occurs, the locking member segment 56 returns or " spring backs " to its locking position due to the elasticity of the biasing element 74, so that the most forward portion of the partial thread formation 62 is located. Exemplary threads 62a are meshed and engaged with the foremost thread 24a of the first member (FIG. 2C).

Upon additional forward movement of the second member 14 into the first member 12, the partial threaded formation 62 of each locking member segment 56 alternates between the locking and releasing positions, thereby allowing the first By camming or "latching" along the inner thread 24 of the member 12, it is gradually meshed and engaged with the additional inner thread 24 of the first member 12 (ie, coupling of the coupling assembly). Position) (FIG. 2D). In this position, the engagement of the partially threaded formation 62 of the first member 12 with the internal thread 24 of the locking member segment 56 is such that the second member 14 is withdrawn from the first member 12. Do not When the first and second members 12, 14 are in a coupled position (FIG. 2D), the annular seal 54 on the second member 12 causes the second inner surface 30 of the first member 12 to be closed. By sealingly) to prevent fluid leakage.

Since the second member 14 can be connected to the female threaded coupling (eg, the first member 12), the female adapter can be removed, thereby reducing the leakage path as well as cost. In addition, the customer will no longer be required to purchase all of their replacement hoses from the manufacturer of the coupling assembly.

When it is desired to uncouple the second member 14 from the first member 12, the release sleeve 76 is engaged with the tapered face 60 of each locking member segment 56 until it is engaged. The release sleeve 76 is moved forward (in the direction of arrow E) from its rearward position. Upon continued forward movement of the release sleeve 76 to its forward position, the release sleeve 76 interacts with the locking member segment 56 such that the pivot axis P is pressed against the biasing element 74. By applying a force to the locking member segment 56 to pivot clockwise (in the direction of arrow F) about), the biasing element 74 extends radially outward. Each locking member segment 56 pivots clockwise until it reaches its release position (FIG. 3B). In this position, each locking member segment 56 is folded in groove 46 so that each locking member segment 56 slides axially past the inner thread 24 of the first member 12. Provide the necessary clearance. Thus, the second member 14 can be separated from the first member 12, which causes the coupling assembly 10 to be in an uncoupled position (FIG. 3C).

A perspective view and a cross-sectional view of one embodiment of a male coupling 400 coupled to the female threaded coupling 402 and detachable from the female threaded coupling 402 is shown in FIGS. 4A and 4B, respectively. The male coupling 400 and the female threaded coupling 402 together operate as a press fit coupling assembly, which will be described in more detail below. As shown in FIG. 4B, the male coupling 400 and the female threaded coupling 402 are in an uncoupled position. In the illustrated embodiment, the female threaded coupling 402 is a female threaded port, such as a standard female threaded port. In one embodiment, the standard female threaded port may be a SAE O-ring boss port. In alternative embodiments, the standard female threaded port may be an ISO, DIN or BSPP o-ring port.

A cross-sectional view of the male coupling 400 and the female threaded coupling 402 in the coupled position is shown in FIG. 4C. In the coupled position, the male coupling 400 and the female threaded coupling 402 function as a coupling assembly for delivering fluid through it. Both the male coupling 400 and the female threaded coupling 402 share the same central longitudinal axis A when they are in the coupled position as shown in FIG. 4C. In one embodiment, the male coupling 400 and / or the female threaded coupling 402 may be formed of carbon steel. In alternative embodiments, the male coupling 400 and / or the female threaded coupling 402 may be formed of other materials such as brass, aluminum, stainless steel, and plastic.

In an alternative embodiment, the female threaded coupling 402 includes a receptacle 404 with a receiving end 406, and a remote (not shown) having a remote end (not shown). A passage 408 allowing fluid to flow through it extends through the female threaded coupling 402 between the receiving end 406 and a remote end (not shown). In one embodiment (not shown), the remote portion of the female threaded coupling 402 may include an external thread for attachment of a separate component (not shown) to the internal thread, or the female Threaded ports can be integrated into devices such as pumps, manifolds, and the like. In alternative embodiments (not shown), the female threaded coupling 402 may include other suitable connecting means for attachment to a separate component (not shown).

The female threaded coupling 402 also includes a chamfered face 410 extending rearwardly and inwardly from the receiving end 406. A set of inner threads 412 extends rearward from the chamfered face 410. In the illustrated embodiment, the inner thread 412 has a triangular-shaped profile in cross section and includes nine threads 412a-i. In alternative embodiments (not shown), the internal threads 412 may take the form of other profiles (eg, trapezoids, squares, or rectangles) when viewed in cross section, and may include any number of threads. Can be. In another alternative embodiment (not shown), the female threaded coupling 402 may not include a chamfered face 410.

In the illustrated embodiment, the male coupling 400 has a main body having a collar 416 that separates the leading end 418 with the leading end 420 and the trailing end (not shown) having the trailing end (not shown). 414). A passage 422 allowing fluid to flow through it extends from the tip 420 through the body 414 to the rear end (not shown). In one embodiment (not shown), the rear end of the body 414 may include or be connected to a hose nipple for receiving a hose. In an alternative embodiment (not shown), the rear end has an external thread for attachment of another component to the internal thread or can be counter-bored to accommodate a tube that can be soldered to the body 414. Can be.

The tips 418 of the body 414 are first cylindrically separated from each other by a first outwardly facing annular groove 428 extending radially inwardly from the first and second outer surfaces 424, 426. An outer surface 424 and a second cylindrical outer surface 426. The first groove 428 is at least partially defined by the third cylindrical outer surface 430.

As shown in FIGS. 4B and 4C, the first and second outer surfaces 424, 426 have the same outer diameter of a size accommodated by the inner thread 412 of the female threaded coupling 402. In an alternative embodiment (not shown), the first and second outer surfaces 424, 426 may have the first outer surface 424 received by the inner thread 412 of the female threaded coupling 402. As long as they have an outer diameter that is of a size, they can have different diameters.

The male coupling 400 also includes a latching locking member that locks the male coupling 400 and the female threaded coupling 402 together. In the illustrated embodiment, the latching locking member is in the form of four separate latching locking member segments 432 that are located within the groove 428 of the body 414 and together form the latching locking member. In alternative embodiments (not shown), the latching locking member may comprise a different number of locking member segments.

As shown in FIGS. 4B and 4C, each locking member segment 432 has an interior of the female threaded coupling 402 when the male coupling 400 is inserted into the female threaded coupling 402. Cylindrical outer surface 434 and tapered outer surface 436 separated from each other by retaining formations configured to mesh and engage with thread 412, which is discussed in more detail below. In the embodiment shown, the retaining formation includes an external partial threaded formation 438. Partial threaded formation 438 protrudes from groove 428 beyond the first outer surface 424 of body 414 to the outside. The threaded formation 438 is characterized in part because of the fact that the latching locking member consists of the locking member segment 432. Therefore, the partial threaded formation 438 of each locking member segment 432 includes only a portion of the threaded formation. However, it will be appreciated that the locking member segments 432 together form a threaded formation, although the threads may not be adjacent because adjacent locking member segments 432 will have a small space therebetween.

In the illustrated embodiment, the partial threaded formation 438 includes three triangular shaped threads 438a-c in cross section. However, in alternative embodiments (not shown), the partial threaded formation 438 may include a different number of threads, and / or the threads are internal threads 412 of the female threaded coupling 402. As long as it can be meshed and engaged, the thread can take the form of another shape (eg, square, rectangular, or trapezoidal) when viewed in cross section. Additionally, in an alternative embodiment (not shown), the retaining formation is a plurality of discrete radially outwardly extending stones that can engage the internal threads 412 of the female threaded port 402. It may include protrusions or protrusions. In such embodiments, a number of discrete radially extending protrusions or protrusions may take any shape as long as they can engage the internal threads 412 of the female threaded port 402. And can be arranged in any pattern.

In the illustrated embodiment, each locking member segment 432 also includes a front end 442, a rear end 444, and first and second inner surfaces 446 and 448. As shown in FIGS. 4B and 4C, the first and second inner surfaces 446, 448 are oriented at an angle B relative to each other, such that the first inner surface 446 and the second inner surface 448 are oriented. An edge is formed between the holes. This edge defines the pivot axis P (extending out of the drawing) to which each locking member segment 432 pivots. The pivot axis P of each locking member segment 432 is spaced apart from the longitudinal axis A and oriented perpendicular to the longitudinal axis A. FIG.

Due to the edges defining pivot axis P, each locking member segment 432 can pivot between a first position (ie, a locking position) and a second position (ie, a release position). In the locked position, the first inner surface 446 abuts the third outer surface 430 of the body as shown in FIGS. 4B and 4C. In the unlocked position, each locking member segment 432 pivots clockwise about the pivot axis P such that the second inner surface 448 abuts the third outer surface 430 (not shown). . However, it will be appreciated that the release position does not necessarily require the second inner surface 448 of each locking member segment 432 to abut the third outer surface 430. Instead, each locking member segment 432 is merely within the outer end of the partial threaded formation 438 of the locking member segment 432 and within the internal thread 412 of the female threaded port 402. It is necessary to pivot clockwise by an amount sufficient to provide a gap between the ends.

An outwardly facing groove 450 extending radially inwardly from the outer surface 434 is provided adjacent the front end 442 of each locking member segment 432. The grooves 450 in the locking member segment 432 together form an annular groove configured to receive an annular elastic biasing element 452. A biasing element 452 surrounding all of the locking member segments 432 is configured to radially inwardly lock the locking member segment 432 to its locking position, and because of its elasticity, i) locking member segment 432 ) Can be extended radially outward when moved to its release position, and ii) returning the locking member segment 432 to its locking position without requiring additional force. In the embodiment shown, the biasing element 452 is an o-ring. In an alternative embodiment (not shown), the biasing element 460 is a garter spring, split retaining ring, or elastomer or plastic ring.

In an alternative embodiment (not shown), the locking member segment 432 can be rotated 180 ° and positioned in the first groove 428 so that the retaining formation of each locking member segment is a male coupling ( It is located closer to the tip 420 of 400. In this embodiment, the biasing element will be provided in an outwardly directed groove in the locking member segment 432 adjacent to the rear end of the locking member segment 432.

Coupling assembly 400 also includes a release sleeve 454 provided between locking member segment 432 and collar 416. The release sleeve 454 is a sleeve portion 456 having a cylindrical inner surface 458 and a cylindrical outer surface 460 and a flange extending radially outwardly from the sleeve portion 456 and having a cylindrical outer surface 464. Part 462 is included. The outer surface 464 of the outer portion 460 of the shoulder portion 462 of the release sleeve 456 defines a shoulder 465 therebetween. At its front end, the sleeve portion 456 has a tapered cross section 466 tapering towards and backward to the longitudinal axis A. FIG. In the illustrated embodiment, the release sleeve 454 generally has an L-shaped profile when viewed in cross section. In an alternative embodiment (not shown), the locking sleeve can take the form of a different profile when viewed in cross section.

The release sleeve 454 is secured on the second outer surface 426 of the body in an axially movable arrangement such that the release sleeve 454 is movable between the rear and front positions. The axial movement of the release sleeve 454 is limited by the collar 416 in the rear direction and by the rearmost thread 438c of each locking member segment 432 in the front direction. Release sleeve 454 is in its rear position as shown in FIGS. 4B and 4C.

The outer surface 464 of the shoulder portion 462 of the release sleeve 454 includes an outwardly directed annular groove 468 that extends radially inwardly from itself. A support ring 470 composed of a rigid material, such as plastic, leather, or hard rubber, and an annular seal 472 composed of a suitable sealing material, such as neoprene or another elastomeric material, is located in the second groove 486. . The support ring 470 serves to prevent the annular seal 472 from being damaged when the coupling assembly is used in high pressure applications. In another embodiment (not shown), the support ring 470 can be removed when the mail coupling 400 is used in low pressure applications.

In the embodiment shown, the second outer surface 426 of the body includes a second outwardly annular groove 474 extending radially inwardly from itself. A support ring 476 made of rigid material such as plastic, leather, or hard rubber, and an annular seal 478 made of a suitable sealing material, such as neoprene or another elastomeric material, are located in the second groove 474. . The annular seal 478 sealingly engages with the inner surface 458 of the release sleeve 454 to prevent dirt or other contaminants from entering the area in front of the annular seal 478, and the male coupling 400 and The hydraulic pressure in the female threaded coupling 402 is maintained. The support ring 476 is sized to be received by the inner surface 458 of the release sleeve 454 and serves to prevent the annular seal 478 from being damaged when the mail coupling 400 is used in a high pressure application. In another embodiment (not shown), the support ring 476 can be removed when the mail coupling 400 is used in a low pressure application.

The male coupling 400 further includes a release sleeve insert 480 disposed around the release sleeve 454 in an axially movable arrangement relative to it. Release sleeve insert 480 includes a first cylindrical inner surface 482 and a second cylindrical inner surface 484 that are separated from each other by shoulders 486. The first inner surface 482 of the release sleeve insert 480 is sized to receive the sleeve portion 456 of the release sleeve 454.

As shown in FIGS. 4B and 4C, the second inner surface 484 has a larger diameter than the first inner surface 482. The second inner surface 484 is sized to receive the annular seal 472 in the groove 468 and sealingly engage the annular seal 472 such that dirt or other contaminants are in the area in front of the annular seal 472. To maintain the hydraulic pressure inside the mail coupling 400 and the female threaded port 402. The second inner surface 484 is also sized to receive the support ring 470 in the groove 468.

Release sleeve insert 480 further includes a first cylindrical outer surface 488 and a second cylindrical outer surface 490 separated from each other by shoulders 492. As shown in FIGS. 4B and 4C, the second outer surface 490 has a larger diameter than the first outer surface 488, while the first outer surface 488 is the second of the release sleeve insert 480. It has a larger diameter than the inner surface.

In the illustrated embodiment, a gap 494 is provided between the shoulder 492 of the release sleeve insert 480 and the shoulder 465 of the release sleeve 454. A biasing element 496, such as a coil spring, is configured in the gap 494 that is configured to bias the release sleeve insert 480 forward. The biasing element 496 is particularly useful when the mail coupling 400 is used in low pressure applications. In an alternative embodiment (not shown), the biasing element 496 may be removed when the mail coupling 400 is used in a high pressure application. In an alternative embodiment (not shown), the biasing element 496 is an annular elastomeric member (eg, an o-ring), a cylindrical rubber sleeve, or a wave (also known as a spring washer). It may take the form of a washer.

The male coupling 400 further includes an annular seal 498 disposed around the first outer surface 488 of the release sleeve insert 480. The annular seal 498 may be made of neoprene or other suitable material and is configured to sealingly engage the chamfered face 410 of the female threaded coupling 402. In the illustrated embodiment, the annular seal 498 has a smaller diameter than the annular seal 472.

To couple the male coupling 400 and the female threaded coupling 402, the male coupling 400 is the most forward of the partial threaded formation 438 of each locking member segment 432. Forward into the female threaded coupling 402 (in the direction of arrow C) until the thread 438a engages the most forward thread 412a of the female threaded coupling 402 (FIG. 5A). ) Is moved. Upon continued forward movement of the male coupling 400, the thread 412a of the female threaded coupling 402 interacts with the locking member segment 432 to counteract the biasing of the biasing element 452. By applying force to the locking member segment 432 to pivot clockwise (in the direction of arrow D) about the pivot axis P, the biasing element 452 extends radially outwardly (FIG. 5B). Locking member segment 432 pivots clockwise about pivot axis P until it is cambed or "latched" over the vertex of thread 412a of female threaded coupling 402. . As soon as this occurs, the locking member segment 432 returns or "springs back" to its locking position due to the elasticity of the biasing element 452 so that the partial thread 438a of the partial thread formation 438 is avoided. Mesh and mesh with internal threads 412a of mail threaded coupling 402 (FIG. 5C).

Upon additional forward movement of the male coupling 400 into the female threaded coupling 402, the threaded formation 438 of each locking member segment 432 is avoided by alternating between the locking and releasing positions. By camming or "latching" along the inner thread 412 of the mail threaded coupling 402, it is gradually meshed and engaged with the additional inner thread 412 of the female threaded coupling 402 (ie , Coupled position) (FIG. 5D). In this position, the engagement of the partially threaded formation 438 of the female threaded coupling 402 to the internal thread 412 of the locking member segment 432 is such that the mail coupling 400 is a female threaded couple. Do not withdraw from ring 402.

In low pressure applications, the annular seal 498 on the first outer surface 488 of the release sleeve insert 480 is applied to the biasing force of the biasing element 496 against the shoulder 486 of the release sleeve insert 480. Thereby sealingly engage the chamfered surface 410 of the female threaded coupling 402. Thus, this sealing engagement between the male coupling 400 and the female threaded coupling 402 prevents fluid leakage between them. In high pressure applications, the annular seal 498 on the first outer surface 488 of the release sleeve insert 480 may be a female threaded couple upon pressurization of the male coupling 400 and the female threaded coupling 402. It is sealingly engaged with the chamfering surface 410 of the ring 402. This is not only the biasing force of the biasing element 496 (if present) applied to the shoulder 486 of the release sleeve insert 480, but also the annular seal 498 (whether in its neutral or pressurized state). Outer diameter) and the difference in diameter between the second inner surface 484 of the release sleeve insert 480 (ie, the outer diameter of the annular seal 498 is the release sleeve insert, although this is not shown to scale in FIGS. 4B and 4C). Pressure imbalance generated by the second inner surface 484 of 480) due to the force applied to the shoulder 486 of the release sleeve insert 480. Sealing engagement between the male coupling 400 and the female threaded coupling 402 also prevents fluid leakage between them.

Since the mail coupling 400 can be connected to a female threaded coupling, such as a standard female threaded port, the female adapter can be eliminated, reducing costs as well as leakage paths. In addition, the customer will no longer be required to purchase all of their replacement hoses from the manufacturer of the coupling assembly.

When it is desired to uncouple the male coupling 400 from the female threaded coupling 402, the release sleeve 454 will engage the tapered face 466 of each locking member segment 432. The release sleeve 454 is moved forward (in the direction of arrow E) against the pressing of the biasing element 496. To facilitate movement of the release sleeve 462 from its rearward position to its forward position, the collar to assist in moving the release sleeve 454 forward relative to the biasing force of the biasing element 496. A tool can be used for additional leverage between 416 and shoulder portion 462 of release sleeve 454.

Upon continued forward movement of the release sleeve 454 from its rearward position to its forward position, the release sleeve 454 interacts with the locking member segment 432 to resist the biasing of the biasing element 452. By applying force to the locking member segment 432 to pivot clockwise (in the direction of arrow F) about the pivot axis P relative to the biasing axis P, the biasing element 452 extends radially outward. Each locking member segment 432 pivots clockwise until it reaches its release position (FIG. 6B). In this position, each locking member segment 432 is folded in the groove 428 so that the male coupling 400 slides axially past the inner thread 412 of the female threaded coupling 402. Provide the necessary gaps. Thus, the male coupling 400 can be separated from the female threaded coupling 402, which causes the two components to be in an uncoupled position (FIG. 6C).

A cross-sectional view of another embodiment of a coupling assembly 700 shown in its coupled position is shown in FIG. 7. The coupling assembly 700 includes a first member 702 and a second member 704 that operate together as a press-fit connected coupling assembly. The first member 702 generally functions as a "female" member of the coupling assembly 700 and the second member 704 generally functions as a "mail" member of the coupling assembly 700, The first member 702 is configured to receive the second member 704. Both the first and second members 702, 704 share the same central longitudinal axis A when they are in the coupled position as shown in FIG. 7.

In the illustrated embodiment, the first member 702 is a female threaded coupling, such as a female threaded port, substantially similar to the first member 12 described above and shown in FIGS. 1A and 1B. Like the first member 12, the first member 702 includes a receptacle having a receiving end 706 and a remote part (not shown) having a remote end (not shown). A passage 708 that allows fluid to flow through it extends between the receiving end 706 and the remote end (not shown).

With continued reference to FIG. 7, the first member 702 includes a first chamfered face 710 extending rearwardly and inwardly from the receiving end 708. The set of inner threads 712 extends rearward from the first chamfered face 710, and the first cylindrical inner surface 714 extends back from the inner threads 712a-i. In the illustrated embodiment, the inner thread 712 has a triangular profile in cross section and includes nine threads 712a-i. In alternative embodiments (not shown), the internal threads 712 may take the form of other profiles (eg, trapezoidal, square, or rectangular) when viewed in cross-section, and may include any number of threads. Can be. In another alternative embodiment (not shown), the first member 702 may not include the first chamfered face 710.

In the illustrated embodiment, the second member 704 is similar to the second member 14 described above and shown in FIGS. 1A and 1B. In particular, the second member 704 includes a collar 716 that separates the leading end with the leading edge 718 from the trailing end (not shown) having the trailing edge (not shown). A passage 720 that allows fluid to flow through it extends from the tip 718 to the rear end (not shown) through the second member 704.

The front ends of the second member 704 are separated from each other by first outwardly directed annular grooves 726 extending radially inwardly from the first and second outer surfaces 716, 718. Face 722 and second cylindrical outer face 724. The first groove 726 is defined at least in part by a third cylindrical outer surface 728 and a radially extending concave surface 730 that joins the first and second outer surfaces 722, 728 together. . The concave surface 730 defines a lip 732 extending axially into a portion of the first groove 726.

In the illustrated embodiment, the first outer surface 722 of the second member 704 includes a second outwardly facing annular groove 734 extending radially inwardly from itself. A support ring 736 made of rigid material, such as plastic, leather, or hard rubber, and an annular seal 738 made of a suitable sealing material, such as neoprene or another elastomeric material, is located in the second groove 734. . The annular seal 738 is located in the second groove 734 between the tip 718 of the second member 704 and the support ring 736.

The coupling assembly 700 also includes a latching locking member configured to lock the first and second members 702, 704 together. In the illustrated embodiment, the latching locking member is in the form of an individual latching locking member segment 740 that is located within the first groove 726 and together form the latching locking member. In one embodiment, the latching locking member includes four locking member segments 740. In alternative embodiments, the latching locking member may comprise different numbers of locking member segments.

As shown in FIG. 7, each locking member segment 740 meshes and engages with an internal thread 712 of the first member 702 when the second member 704 is inserted into the first member 702. And a first outer surface 742 and a second outer surface 744 separated from each other by retaining formations configured to extend, which are discussed in more detail below. In the illustrated embodiment, the retaining formation includes an external partially threaded formation 746 that projects outward from the first groove 726 beyond the first outer surface 722.

In the illustrated embodiment, the partial threaded formation 746 includes three triangular shaped threads in cross section. However, in alternative embodiments (not shown), the partial threaded formation 746 may include a different number of threads, and / or the threads mesh with the internal threads 712 of the first member 702. As long as they can be engaged and engaged, the threads can take the form of other shapes (eg, square, rectangular, or trapezoidal) when viewed in cross section. Additionally, in an alternative embodiment (not shown), the retaining formation is a plurality of discrete radially outwardly extending protrusions or protrusions that can engage the internal threads 712 of the first member 702. It may include. In this embodiment, a number of discrete radially extending protrusions or protrusions may take the form of any shape and as long as they can engage the inner thread 712 of the first member 702. It can be arranged in a pattern of.

Each locking member segment 740 also includes a bent front end 748, a rear end 750, and first and second converging inner surfaces 752 and 754 forming recesses therebetween. do. The bent front end 748 of each locking member segment 738 is fixed in the concave surface 730 of the second member 704 such that each locking member segment 740 is (as shown in FIG. 7). It is pivoted about the second member 704 between the locking position and the unlocking position (not shown).

An elastic compressible member 756, such as an o-ring or garter spring, is disposed between the third outer surface 728 of the second member 704 and the locking member segment 740. The elastic compressible member 756 is configured to bias the locking member segment 740 to its locking position, i) the radial direction due to its compressibility when the locking member segment 740 is moved to its release position. And ii) returning the locking member segment 740 to its locking position without requiring additional force due to its elasticity. It will be appreciated that the arrangement of the elastic compressible member 756 and locking member segment 740 described above can be used in the mail coupling 400 described above and shown in FIGS. 4A-4C.

In an alternative embodiment (not shown), the locking member segment 740 may be rotated 180 ° and positioned in the first groove 726 such that the retaining formation of each locking member segment is a second member ( It is located closer to the tip 718 of 704. In this embodiment, the biasing element will be provided in an outwardly groove in the locking member segment 740 adjacent to the rear end of the locking member segment 740.

The coupling assembly 700 also includes a release sleeve 758 provided between the locking member segment 740 and the collar 716. Release sleeve 758 includes a sleeve portion 760 and a flange portion 762 extending radially outward from the sleeve portion 760. Sleeve portion 760 of release sleeve 758 overlaps a portion of first groove 726 and a portion of rear end 750 of locking member segment 740. Thus, the locking member segment 740 is retained in the first groove 726 by the lip 732 of the second member 704 and the sleeve portion 760 of the release sleeve 758.

The release sleeve 758 is fixed on the second outer surface 724 of the body in an axially movable arrangement such that the release sleeve 758 is movable between the rear and front positions. The axial movement of the release sleeve 758 is limited by the collar 716 in the rear direction and by the rearmost partial thread 746 of each locking member segment 740 in the front direction. Release sleeve 758 is in its rear position as shown in FIG. 7.

The coupling operation of the coupling assembly 700 is similar to the coupling operation described above and shown in FIGS. 2A-2D. In addition, the uncoupling operation of the coupling assembly 700 is similar to the uncoupling operation described above and illustrated in FIGS. 3A-3C.

For all of the embodiments described above, one or more of the above-described cylindrical faces have a linear profile (eg, a tapered face) or a curved face (eg, with an angle to the longitudinal axis A of the coupling assembly). It will be appreciated that it may be replaced with, for example, convex or concave surfaces. Additionally, one or more of the tapered or chamfered surfaces described above may be cylindrical (eg tapered) or bent (eg convex) relative to the longitudinal axis A of the coupling assembly. It will be appreciated that it may be replaced with a face or a concave surface).

It will be appreciated that the above-mentioned mail coupling can be applied in fields other than fluid connectors. For example, one of the above-mentioned mail couplings, in particular a device comprising a latching locking member and a release sleeve, can be used as a press-fit fixed device connected to the female thread in a separate device. In this example, the component does not need to carry the fluid.

As long as the term "comprises" or "comprising" is used in the specification or claims, it is intended to be inclusive of the term "comprising" in a manner similar to that interpreted when used as a variant word in a claim. Moreover, as long as the term “or” is used (eg, A or B), this will mean “A or B or both”. When the applicant intends to indicate "only A or B but not both," the term "only A or B, not both" will be used. Thus, the use of the term “or” herein is an inclusive use, not an exclusionary use. See Bryan A. Garner's A Dictionary of Modern Legal Usage 624 (2d, Ed. 1995). Also, as long as the term "in" or "in" is used in the specification and claims, this additionally means "on" or "on." Moreover, as long as the term “connects” is used in the specification and claims, it is not only “directly connected to,” but also indirectly connected to, such as through another component or a plurality of components. It is meant to be ".

While the present application has shown various embodiments, and these embodiments have been described in some detail, it is not the intention of the applicant to limit or limit the scope of the invention claimed in such details. Additional advantages and modifications will be readily apparent to those skilled in the art. Therefore, in a broader aspect of the invention, it is not limited to the specific details and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of the applicant's claimed invention. Moreover, the above embodiments are illustrative and are not essential to all possible combinations in which a single particular or element may be claimed in this or a later application.

Claims (26)

In the coupling assembly: A first and a second member arranged between an uncoupled position and a coupled position, the first member having an inner thread provided at least therein and a receiving portion sized to receive a portion of the second member; The second member includes first and second members having an outer surface; And A retaining formation disposed around the outer surface of the second member, configured to move between the locking and unlocking positions, biased to its locking position, and configured to mesh and engage with an internal thread of the first member. The branch includes a latching locking member, Upon insertion of the second member into the first member, the retaining formation of the latching locking member gradually engages with an internal thread of the first member, thereby locking the first and second members together. , Coupling assembly. The method of claim 1, And the latching locking member comprises a plurality of locking member segments. The method of claim 2, And the second member includes an outwardly directed groove extending inwardly from an outer surface of a size that receives the locking member segment. The method of claim 1, And the retaining formation comprises a partially threaded formation. The method of claim 1, And an elastic biasing element configured to bias the latching locking member to its locked position. The method of claim 5, wherein And the biasing element comprises at least one of an o-ring, a garter spring, or a split retaining ring. The method of claim 5, wherein And the biasing element is disposed between the latching locking member and the second member. The method of claim 1, And a release sleeve configured to move the latching locking member to its release position such that the second member is withdrawn from the first member. The method of claim 1, And an annular seal between the first and second members when the second member is fully inserted into the first member. In the mail coupling for connecting to the female threaded port with a receptacle with an internal thread: A main body having a leading end, a rear end and an outer surface, the leading end being sized to be received by the receiving portion of the female threaded portion; A plurality of locking member segments disposed around the body and configured to pivot between locking and unlocking positions, each locking member segment having a retaining formation configured to mesh and engage with an internal thread of the female threaded port; And An elastic biasing element configured to bias each locking member segment to its locking position. Upon insertion of the male coupling into the female threaded port, the retaining formation of each locking member segment gradually engages with an internal thread of the female threaded port, thereby providing the male coupling and the Mail coupling, which locks female threaded ports together. The method of claim 10, Wherein said female threaded port comprises a standard female threaded port. The method of claim 10, And the retaining formation comprises a partially threaded formation. The method of claim 10, And the biasing element comprises at least one of an o-ring, a garter spring, or a split retaining ring. The method of claim 13, And the biasing element is located in an outwardly facing groove extending inwardly from an outer surface of each locking member segment. The method of claim 13, And the biasing element is disposed between the locking member segment and the body. The method of claim 10, And an annular seal between the male coupling and the female threaded port when the male coupling is fully inserted into the female threaded port. The method of claim 10, And a release sleeve configured to move the locking member segment to its release position such that the mail coupling is withdrawn from the female threaded port. The method of claim 17, And an annular seal between the body and the release sleeve. The method of claim 17, And a release sleeve insert disposed about the release sleeve and biased in a forward direction. The method of claim 19, And an annular seal between said release sleeve and said release sleeve insert. The method of claim 20, And a biasing element disposed between the release sleeve insert and the release sleeve to bias the release sleeve in the forward direction. The method of claim 21, And the biasing element comprises at least one of a wave washer, an o-ring, a cylindrical rubber sleeve, or a coil spring. The method of claim 10, And an annular seal provided on the release sleeve insert and configured to seal against the face of the female threaded port when the male coupling is fully inserted into the female threaded port. Mail coupling. In the mail coupling for connecting to the female threaded port with a receptacle with an internal thread: A main body having a leading end, a rear end, an outer face, and an outwardly facing groove extending inwardly from the outer face, the tip being sized to be received by the receiving portion of the female threaded portion; A plurality of locking member segments arranged in the groove, configured to pivot between the locking and unlocking positions, each locking part segment having a partial threaded formation configured to mesh and engage with an internal thread of the female threaded port; And An elastic biasing element configured to bias each locking member segment to its locking position. Upon insertion of the male coupling into the female threaded port, each locking member segment pivots against the biasing element from its locking position to its release position, Upon continued insertion of the male coupling into the female threaded port, each locking member segment returns to its locking position due to the elasticity of the biasing element, such that the partial thread of the locking member segment One of the threads of the partial formation meshes and meshes with one of the threads of the internal thread in the female threaded port, Upon additional insertion of the male coupling into the female threaded port, the locking member segment alternates between a release and a locking position such that the remaining threads of the partial threaded formation of the locking member segment And meshing and engaging with additional internal threads in the mail threaded port, thereby locking the mail coupling and the female threaded port together. 25. The mail coupling of claim 24 wherein the biasing element comprises at least one of an o-ring, a garter spring, or a split retaining ring. 25. The mail coupling of claim 24, further comprising an annular seal between the mail coupling and the female threaded port when the mail coupling is fully inserted into the female threaded port.

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