Retainer cover for pipe connector

Abstract

The invention relates to a connector including an inner diameter (ID) snap assembly. The ID buckle assembly can be easily assembled and is low in cost. The overall configuration of the ID snap assembly is smooth and elongated, and can be configured to mate with various connectors. The connector may also include an indication feature for providing visibility through the connector body. The connector body defines an indication region that provides visual indications of the two positions of the catheter. The first position of the conduit includes a position where the conduit is inserted beyond the sealing portion of the connector but not fully inserted to a predetermined depth. And, the second position includes a position where the catheter is sealed and fully inserted within the connector body to a predetermined depth (e.g., a depth at which the end of the catheter engages a catheter stop of the connector body).

Description

[0001] Priority Claim

[0002] This application claims the benefit and priority of U.S. Patent Application No. 63 / 384,262, filed on November 18, 2022.

[0003] Incorporation by Reference

[0004] The disclosure of U.S. Patent Application No. 63 / 384,262, filed on November 18, 2022, and the drawings are incorporated herein by reference as if fully set forth herein. Additionally, the disclosure of U.S. Patent Application No. 63 / 377,921, filed on September 30, 2022, and the drawings are incorporated herein by reference as if fully set forth herein. Technical Field

[0005] This disclosure generally relates to pipe fittings. More particularly, this disclosure relates to push-on fittings. Background Art

[0006] Conduits are used to transport a variety of liquids and / or gases. Connectors, couplings, and fittings are used to join conduits in various ways so that the conduits can be arranged in different configurations to move fluid through the conduits. The conduits can be rigid or hard, such as metal or plastic pipes used in household plumbing applications, or the conduits can be flexible. Connectors are used for end-to-end connection of conduits, or a connector can direct a conduit in different directions relative to the conduit axis. For example, a connector can be used to change the direction of a pipe, such as at an angle of 45° or 90° relative to the flow path of the pipes connected by the connector. A connector can also be used to branch or split pipes in different directions. For example, a single pipe section can be joined by a T-fitting or a Y-fitting or a multi-conduit fitting or a diameter change.

[0007] In some cases, connectors, couplings, and fittings can include an outer diameter (OD) snap component. The OD snap component can make the connector, coupling, or fitting large and expensive.

[0008] Accordingly, there is a need for a sleeker, lower-cost snap component.

[0009] In addition, it is beneficial for a user to identify when a conduit is fully inserted into a connector, coupling, or fitting. For an outer diameter seal configuration, it can be challenging to design a push-on fitting with an indication feature without adding complexity or cost due to materials, components, etc. Accordingly, there is a need in the art to provide an indication feature for a push-on fitting that is simple, low-cost, and compatible with a variety of conduits. This disclosure addresses this and other related and unrelated problems. Summary of the Invention

[0010] This application relates to a connector including an inner diameter (ID) snap component. The inner diameter snap component can be easily assembled and is low in cost. The overall configuration of the inner diameter snap component is smooth and slender, and can be configured to fit various connectors.

[0011] The connector can include an indicia feature for providing visibility inside the connector. For example, the connector can include a connector body made of a transparent or opaque material to provide visibility through the connector body. The connector body defines an indicia region that provides a visual indication of two positions of a conduit. A first position of the conduit includes a position where the conduit is inserted beyond a sealing portion of the connector but not fully inserted into the connector to a predetermined depth. And, a second position of the conduit includes a position where the conduit is sealed and fully inserted into the connector body to a predetermined depth (e.g., the predetermined depth includes a depth at which an end of the conduit engages a conduit stop of the connector body).

[0012] In some examples, the connector can be coupled to a conduit such that the connector is not easily removable. In other examples, the conduit can be detachable from the connector to allow the connector to be reused (e.g., using a removal tool or other suitable tool or mechanism). In this way, the connector can be separated without the risk of damaging the conduit or the connector.

[0013] Aspects of the present disclosure relate to a retainer cap for a connector. The connector includes a connector body having a first end opening and a second end opening. The retainer cap has a body having a substantially continuous outer surface sized to fit within one of the first end opening and the second end opening of the connector body. The body has a first end and a second end.

[0014] The retainer cap includes a rim positioned at the first end of the body. The rim overhangs the outer surface of the body such that when the retainer cap is inserted into one of the first end opening and the second end opening of the connector body, the rim abuts an end face of the connector body and prevents the retainer cap from being further inserted into one of the first end opening and the second end opening.

[0015] The retainer cap further includes a plurality of longitudinal through slots evenly spaced around the body. The plurality of longitudinal through slots have an open side and an opposite closed side at the second end of the body.

[0016] The retainer cap further includes a plurality of flexible legs (e.g., fingers) defined by the body retained between adjacent through slots. Each of the plurality of flexible legs has a free end. Each of the plurality of flexible legs includes a retaining protrusion at the free end for securing the retainer cap to the connector body.

[0017] Another aspect of the present disclosure relates to a connector assembly. The connector assembly includes a connector body having a first end defining a first end opening and an opposite second end defining a second end opening. The connector body defines a fluid passage extending through the first end and the second end such that the first end and the second end are in fluid communication. The connector body includes a plurality of holes. In some examples, the plurality of holes are through-holes that form openings through the wall defining the connector body and extending from the interior of the body to the outer surface. In other examples or embodiments, a plurality of internal recesses or indentations are formed within the wall of the connector body to provide a smooth or uniform outer surface of the connector body.

[0018] The connector assembly includes a first sealing member and a second sealing member. The first sealing member is configured to be inserted into the first end opening of the connector body to form a sealed engagement with a first fluid conduit, and the second sealing member is configured to be inserted into the second end opening of the connector body to form a sealed engagement with a second fluid conduit.

[0019] The connector assembly further includes a first retaining ring and a second retaining ring. The first retaining ring includes a plurality of teeth configured to be coupled to a first fluid conduit, and the second retaining ring includes a plurality of teeth configured to be coupled to a second fluid conduit.

[0020] The connector assembly further includes a first protective ring and a second protective ring. The first protective ring is partially positioned within the connector body between the first retaining ring and the first sealing ring and adjacent to the first end of the connector body, and the second protective ring is partially positioned within the connector body between the second retaining ring and the second sealing ring and adjacent to the second end of the connector body.

[0021] The connector assembly includes a first retainer cap and a second retainer cap. Each retainer cap has a body with a substantially continuous outer surface. The first retainer cap and the second retainer cap are sized to fit within the first end opening and the second end opening of the connector body, respectively. The bodies of the first retainer cap and the second retainer cap each have a first end and a second end. The first retainer cap and the second retainer cap each include a rim located at the first end of the respective body of the first retainer cap and the second retainer cap. The rim overhangs the outer surface of the body such that when the corresponding first retainer cap and second retainer cap are inserted into the respective first end opening and second end opening of the connector body, the rim abuts the end face of the connector body at the first end and the second end of the connector body and prevents the first retainer cap and the second retainer cap from being further inserted into the first end opening and the second end opening.

[0022] The first retainer cap and the second retainer cap each include a plurality of longitudinal through-slots evenly spaced around the body. The plurality of longitudinal through-slots have an open side at the second end of the body and an opposite closed side.

[0023] The first retainer cap and the second retainer cap each include a plurality of flexible legs defined by a body retained between adjacent through slots. Each of the plurality of flexible legs has a free end. Each of the plurality of flexible legs includes a retaining projection at the free end for fixing the first retainer cap and the second retainer cap to the connector body, respectively.

[0024] These and other features and advantages will be apparent from the following detailed description and the associated drawings. Various additional aspects will be set forth in the following description. These aspects may relate to individual features and combinations of features. It should be understood that both the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the broad concepts on which the embodiments disclosed herein are based. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the present disclosure. A brief description of the drawings is as follows:

[0026] Figure 1A A plan view showing an exemplary connector assembly including a catheter in accordance with the principles of the present disclosure.

[0027] Figure 1B Shows Figure 1A a perspective view of the connector assembly.

[0028] Figure 2 Shows Figure 1A an exploded cross-sectional view of the connector assembly, which includes a connector body, a sealing member, a snap ring, a protective ring, and a retainer cap.

[0029] Figure 3 Shows Figure 1A a perspective view of one of the retainer caps.

[0030] Figure 4 Shows Figure 3 an end view of the retainer cap.

[0031] Figure 5 Shows Figure 1A a partial exploded view of the connector assembly.

[0032] Figure 6 Shows a connector assembly without a catheter Figure 1A in cross-section.

[0033] Figure 7 Shows Figure 6 an enlarged portion of the connector assembly.

[0034] Figure 8 Shows a connector assembly without a catheter in accordance with the principles of the present disclosure Figure 1ASide view of a connector assembly, where the connector body is depicted as transparent.

[0035] Figure 9 Shows Figure 8 Perspective view of a connector assembly.

[0036] Figure 10 Shows a partial exploded view of another exemplary connector assembly in accordance with the principles of the present disclosure, where the connector body has a dust-proof outer surface.

[0037] Figure 11 Shows Figure 10 Cross-sectional view of a portion of an assembled connector assembly. Detailed Description

[0038] This application relates to push-on fittings for conduits (e.g., PEX pipes, copper pipes, PVC pipes, CPVC pipes, etc.). These fittings are configured to provide an environmental seal with the end of a conduit. That is, a substantially waterproof connection can be formed. These push-on fittings can be used with fluid conduits of different diameters, including fluid conduits with diameters less than 0.25 inches to fluid conduits with diameters greater than 2 inches or larger.

[0039] Figures 1A to 1B Shows an exemplary connector assembly 100

[0040] (e.g., a push-on fitting) in accordance with the principles of the present disclosure. The connector assembly 100 can be used in pressure applications above 100 psi. That is, the connector assembly 100 can have a working pressure greater than 100 psi. In certain examples, the connector assembly 100 can have a working pressure in the range of about 100 psi to about 1500 psi. In other examples, the connector assembly can be used in pressure applications above 1500 psi.

[0041] The connector assembly 100 has a first end 102 and an opposite second end 104, and the first end 102 and the second end 104 are configured to receive and connect to a portion of a pipe fitting or tubular member (e.g., a pipe, a conduit, etc.), particularly to receive and connect to the end of a pipe fitting. As shown, a first conduit 106 is positioned at the first end 102, and a second conduit 108 is positioned at the second end 104.

[0042] Figure 2A cross-sectional view of the connector assembly 100 with the first conduit 106 and the second conduit 108 removed is shown. The connector assembly 100 may include a connector body 110. The connector body 110 may be a cylindrical body. A seal member 112 (e.g., an annular O-ring seal member), a protective ring 114, and a snap ring 116 are installed within the connector body 110 at the first end 120 and the opposite second end 122 of the connector body 110, respectively. A retainer cap 118 may be installed at the first end 120 and the second end 122 of the connector body 110.

[0043] The first end 120 and the second end 122 together define a fluid passage or a body interior 124 that extends along a longitudinal axis X through the first end 120 and the second end 122. The first end 120 and the second end 122 may be the inlet ends of the connector body 110 for receiving the ends of the respective first conduit 106 and second conduit 108. As shown, each of the first end 120 and the second end 122 of the connector body 110 includes a seal member 112, a protective ring 114, a snap ring 116, and a retainer cap 118. The retainer cap 118 is configured to facilitate holding the seal member 112, the protective ring 114, and the snap ring 116 at the first end 120 and the second end 122 of the connector body 110.

[0044] Turning to Figures 3 to 5 , multiple views of the retainer cap 118 are shown. Figure 3 A perspective view of the retainer cap 118 is shown. Figure 4 A top view of the retainer cap 118 is shown. Figure 5 An exploded view of the retainer cap 118, the seal member 112, the protective ring 114, and the snap ring 116 at the second end 122 of the connector body 110 is shown.

[0045] The retainer cap 118 includes a body 126 having a generally continuous outer surface 128 sized to fit within one of a first end opening 130 defined at the first end 120 of the connector body 110 and a second end opening 132 defined at the second end 122 of the connector body 110. The body 126 of the retainer cap 118 has a first end 134 and an opposite second end 136. The retainer cap 118 may be made of a colored material or have a special surface finish or texture to distinguish the retainer cap from the connector body 110.

[0046] The retainer cap 118 includes an edge 138 (e.g., a flange) located at the first end 134 of the body 126. The edge 138 overhangs the outer surface 128 of the body 126 such that when the retainer cap 118 is inserted into one of the first end opening 130 and the second end opening 132 of the connector body 110, the edge 138 abuts against the end face 140 of the connector body 110 and prevents the retainer cap 118 from being further inserted into one of the first end opening 130 and the second end opening 132. The edge 138 includes a first diameter D1 that is sized larger than a second diameter D2 of the opening 156 defined in the retainer cap 118. The openings 156 of the retainer cap 118 receive the first conduit 106 and the second conduit 108, respectively. In this way, the ends of the first conduit 106 and the second conduit 108 can be inserted into the connector body 110 through the openings 156 of the retainer cap 118, which provides an indication of partial insertion during sealing and full insertion.

[0047] The retainer cap 118 includes a plurality of longitudinal slots 142 that are evenly spaced around the body 126. Each of the plurality of longitudinal slots 142 has an open side 144 at the second end 136 of the body 126 and an opposite closed side 146. The closed side 146 of each of the plurality of longitudinal slots 142 includes a flat inner surface 158. In some examples, the plurality of longitudinal slots 142 are generally U-shaped, although alternatives are possible. Each of the plurality of longitudinal slots 142 extends along a majority of the body 126. As shown, the retainer cap 118 includes four longitudinal slots 142 that are evenly spaced around the body 126. It should be understood that the number of longitudinal slots 142 can vary to be more or less than the number shown.

[0048] The retainer cap 118 includes a plurality of flexible legs 148 (e.g., fingers) defined by portions of the body 126 that are retained between adjacent slots 142. That is, the plurality of flexible legs 148 are integrally formed with the body 126 of the retainer cap 118. Each of the plurality of flexible legs 148 has a free end 150 and a retaining projection 152 (e.g., a snap feature) located at the free end 150 for securing the retainer cap 118 to the connector body 110. As shown, the retainer cap 118 includes four flexible legs 148 that are evenly spaced around the body 126 between adjacent slots 142. It can be understood that the number of flexible legs 148 can vary to be more or less than the number shown.

[0049] As Figure 3As shown, the retainer cap 118 may have alternating longitudinal through-slots 142 and flexible legs 148 that form a continuous edge surface 159. The edge surface 159 may have a curved profile that includes a substantially flat inner surface 158 at the closed side 146 of each longitudinal through-slot 142 and a curved transition between the free ends 150 of the flexible legs 148. For example, the longitudinal through-slots 142 may be presented as having a U-shape, and the flexible legs 148 may be presented as having an inverted U-shape. The plurality of longitudinal through-slots 142 each extend along a majority of the body 126 such that when the first conduit 106 and the second conduit 108 are installed in the connector assembly 100, the conduits 106, 108 are visible through the longitudinal through-slots 142 of the retainer cap 118. As Figure 5 shown, the width (w l ) of a single flexible leg 148 may be greater than the width (w t ) of a single retaining projection 152. Additionally, the width (w s ) of a single through-slot 142 may be substantially similar to the width (w t ) of a single retaining projection 152.

[0050] The retaining projections 152 extend radially outward from the body 126 of the retainer cap 118. The retaining projections 152 of the plurality of flexible legs 148 may include inclined surfaces 154 that flare outward in a direction from the second end 136 of the body 126 of the retainer cap 118 toward the first end 134 of the body 126 of the retainer cap 118. In some examples, the retaining projections 152 may include a trapezoidal shape, although alternatives are possible. In some examples, the retaining projections 152 extend radially outward to be substantially aligned with the edge 138 of the retainer cap 118. In some examples, the retaining projections 152 extend radially and are sized to fit within holes 162 defined within the walls of the connector body 110.

[0051] The retaining projections 152 of the plurality of flexible legs 148 each include a hook 160 configured to hold the retaining projection 152 within a corresponding hole 162 defined in the connector body 110 to form an internal snap-fit connection. As shown, the connector body 110 includes four holes 162 adjacent the first end 120 and four holes 162 adjacent the second end 122, although alternatives are possible. The four holes 162 at the first end 120 and the second end 122 are evenly spaced around the connector body 110. When the retainer cap 118 is inserted into the corresponding first end opening 130 and second end opening 132 of the connector body 110, the retaining projections 152 of the plurality of flexible legs 148 pass through a corresponding one of the plurality of holes 162 in the connector body 110.

[0052] Refer to Figures 6 to 7, depicts a cross-sectional view of the connector assembly 100 without the first conduit 106 and the second conduit 108. As the retainer cover 118 is moved along the longitudinal axis X and inserted into the first end opening 130 and the second end opening 132 of the connector body 110, the inclined surface 154 of the retaining projection 152 engages and passes over the tapered inner surfaces 164 (see Figure 2 ) provided at the first end 120 and the second end 122 of the connector body 110. The retainer cover 118 can be pushed into the first end opening 130 and the second end opening 132 until the retaining projection 152 passes through the hole 162, allowing the hook portion 160 to snap into the hole 162. In this way, as will be understood by those skilled in the art, the retainer cover 118 can be held in the locked position.

[0053] The plurality of flexible legs 148 are elastically flexible and biased to bend inwardly and outwardly. That is, when the retainer cover 118 is inserted into the connector body 110 to apply an outward force on the plurality of flexible legs 148, the plurality of flexible legs 148 can bend inwardly or be biased. During insertion, the plurality of flexible legs 148 can bend inwardly until the retaining projection 152 passes through the hole 162, allowing the plurality of flexible legs 148 to bend outwardly or be biased to their initial position. Once the retainer cover 118 is inserted into the connector body 110 such that the retaining projection 152 is aligned with and passes through the hole 162, the hook portion 160 abuts or contacts the edge 166 of the hole 162 of the connector body 110.

[0054] Still referring to Figure 6 , the connector body 110 can be constructed as a single piece and include a single integral unitary component that cannot be separated without breaking. The connector body 110 can be made of plastic or other polymeric materials suitable for the intended application, such as polyphenylsulfone (PPSU), although other alternatives are possible. At least a portion of the connector body 110 can include a translucent plastic construction. Using a plastic material can help reduce the complexity, number of components, and cost of the connector. In other examples, the connector body 110 can be made of a metallic material, such as brass or stainless steel. Further details regarding the transparent connector body can be found in U.S. Patent Application Serial No. 63 / 377,921, filed September 30, 2022, which is hereby incorporated by reference in its entirety.

[0055] In other examples, the connector body 110 may include a viewing window for allowing visual inspection of the first conduit 106 and the second conduit 108 during insertion. That is, only the portion of the connector body 110 that includes the viewing window may be made of a plastic material to provide visibility of the indicia area 168. When the first conduit 106 and the second conduit 108 are installed, the first conduit 106 and the second conduit 108 can be seen through the longitudinal through slot 142 of the retainer cap 118 as the first conduit 106 and the second conduit 108 pass through and into the connector body 110.

[0056] The connector assembly 100 can be made in a variety of configurations and sizes designed for handling a variety of fluid applications. For example, the connector assembly 100 can include a straight connector body or fitting, an elbow connector body or fitting, a T-shaped connector body or fitting, a blind end connector body that blocks flow, a connector body configured to receive fluid conduits of different diameters, an angled connector body, a multi-way (or 4-way) connector body, a Y-shaped connector body, a T-shaped connector body, another type of connector body, or a combination of connector bodies.

[0057] In some examples, the connector assembly 100 can include a tube liner (not shown) that can be retained within the conduits of the connector assembly 100. For example, the first conduit 106 and the second conduit 108 can each include a tube liner (not shown) to prevent light from transmitting therethrough. The advantageous feature of having a tube liner allows the use of a transparent connector body 110 in applications where light transmission is not preferred but a visible indication of complete insertion of the conduits is desired.

[0058] In still other examples, separate elements (e.g., snap rings, C-rings, caps, sleeves, or similar components) (not shown) can be used to cover any transparent portion or section of the connector body 110 to prevent light transmission. That is, separate elements can be placed on the outer side of the transparent connector body 110 to limit light penetration. In certain examples, the separate element can be placed within the recess 170 of the connector body 110. The recess 170 is defined with an annular reinforcing rib that can extend continuously or discontinuously along the entire circumference of the connector body 110.

[0059] In the example shown, the entire connector body 110 is made of a plastic construction, although alternatives are possible. As such, the entire connector body 110 can be light transmissive or transparent to provide an indicia area 168 for viewing the interior 124 of the body. In other examples, at least a portion of the connector body 110 can be transparent to allow visibility of the indicia area 168. Even when the retainer cap 118 is installed at the first end 120 and the second end 122 of the connector body 110, a visible area that includes the indicia area 168 remains on the connector body 110.

[0060] The connector body 110 provides a visible indication of two positions of the catheter within the indication area 168. The first position of the first catheter 106 includes a position where the first catheter 106 is inserted beyond the sealing portion of the connector body 110 but not fully inserted to a predetermined depth 178 (see Figure 2 ). That is, the catheter can be partially inserted into the connector body 110 from the first end 120 and / or the second end 122, where the insertion of the catheter passes through or beyond the sealing member 112. The second position of the first catheter 106 includes a position where the first catheter 106 is sealed and fully inserted into the connector body 110 to the predetermined depth 178 (e.g., the predetermined depth includes the depth at which the end of the catheter engages the catheter stop of the connector body).

[0061] In the illustrated example, the retainer cap 118 is not transparent, although alternatives are possible. Thus, when the retainer cap 118 is respectively installed at the first end 120 and the second end 122 inside the connector body 110, portions of the transparent connector body 110 can be hidden or covered.

[0062] The indication area 168 provides visibility within the interior 124 of the body of the connector body 110 for visual inspection by the naked eye of the ends of the first catheter 106 and the second catheter 108. The indication area 168 can have a length L defined along the longitudinal axis X of the connector body 110 (see Figure 8 ).

[0063] Turning again to Figures 8 to 9 , the connector body 110 defines a first cavity 172 and a second cavity 174 (e.g., inner bore, receiver, etc.) respectively for receiving the first catheter 106 and the second catheter 108. The first cavity 172 and the second cavity 174 are non-threaded cavities, although alternatives are possible. The first cavity 172 and the second cavity 174 provide a tight sliding fit for the catheters when the first catheter 106 and the second catheter 108 are inserted. The first cavity 172 and the second cavity 174 allow the first catheter 106 and the second catheter 108 to be fluidly connected to each other. It should be understood that fluid flow can occur in either direction between the first catheter 106 and the second catheter 108.

[0064] The connector body 110 includes a circumferential rib 176 (e.g., separator, lip, step), which is centrally positioned within the connector body 110, between the ends of the respective first cavity 172 and the ends of the second cavity 174, to prevent the first catheter 106 and the second catheter 108 from moving further into the connector body 110.

[0065] The circumferential rib 176 also defines a predetermined depth 178 into which the first conduit 106 and the second conduit 108 can be inserted into the first cavity 172 and the second cavity 174 of the connector body 110, respectively. The predetermined depth 178 can refer to the depth at which the first conduit 106 and the second conduit 108 can be inserted into the connector body 110 for complete or full insertion. The predetermined depth 178 is the longitudinal distance between the respective first end 120 and the second end 122 (i.e., the inlet end) of the connector body 110 and the circumferential rib 176. Axial end face stoppers 180 are defined at the predetermined depth 178 on opposite sides of the circumferential rib 176 so that the first conduit 106 and the second conduit 108 engage with the axial end face stoppers 180 when fully inserted into the connector body 110. That is, when the first conduit 106 and the second conduit 108 are fully inserted into the connector body 110 to the predetermined depth 178, the ends of the first conduit 106 and the second conduit 108 can abut or press against the axial end face stoppers 180 of the circumferential rib 176. The circumferential rib 176 can provide a space or gap 182 between the distal ends of the first cavity 172 and the second cavity 174 of the connector body 110 (see Figure 2 ).

[0066] Reference Figure 6 , the indicatory area 168 of the connector body 110 provides visibility of the first conduit 106 and the second conduit 108 during insertion. The indicatory area 168 can extend longitudinally along the connector body 110 for a certain distance between the first cavity 172 and the second cavity 174. The indicatory area 168 provides indication of multiple positions of the first conduit 106 and the second conduit 108, such as two positions of the first conduit 106 and the second conduit 108. Specifically, the indicatory area 168 provides a visible indication of when the first conduit 106 and the second conduit 108 are partially inserted into the connector body 110 (e.g., at the first conduit position) through at least the sealing portion of the connector assembly 100 provided by the sealing member 112.

[0067] Once the end portions of the first conduit 106 and the second conduit 108 are partially inserted and passed through the sealing member 112 of the connector assembly 100, the indicia region 168 provides visibility of the respective first conduit 106 and second conduit 108. The partial insertion can include positions up to but not including a predetermined depth 178 of the axial end face stop 180 or the respective first cavity 172 and second cavity 174. That is, when the end portions of the first conduit 106 and the second conduit 108 are only partially inserted into the connector body 110 (i.e., the partial insertion position), the end portions of the respective first conduit 106 and second conduit 108 can be positioned at a depth within the connector body 110 that is less than the predetermined depth 178. That is, the end portions of the respective first conduit 106 and second conduit 108 do not reach or engage the axial end face stop 180 of the circumferential rib 176 of the connector body 110.

[0068] The indicia region further provides a visible indication of when the first conduit 106 and the second conduit 108 are fully inserted through the sealing member 112 of the connector assembly 100 into the connector body 110 to reach the respective axial end face stop 180 or the predetermined depth 178 (e.g., in the second position). When the end portions of the first conduit 106 and the second conduit 108 are positioned at a depth equal to the predetermined depth 178 within the connector body 110, the end portions of the first conduit 106 and the second conduit 108 have passed through the sealing member 112 and are fully or completely inserted into the connector body 110 (i.e., the full insertion position). Once fully inserted, the end portions of the respective first conduit 106 and second conduit 108 are positioned at the predetermined depth 178 such that they abut against the axial end face stop 180.

[0069] In some examples, the first conduit 106 and the second conduit 108 are not removable from the connector body 110, although alternatives are possible. In other examples, the connector assembly 100 can include a removal ring (not shown) configured to allow the first conduit 106 and the second conduit 108 to be removed from the connector body 110. The removal ring can be positioned at the first end 102 and the second end 104 of the connector assembly 100.

[0070] The sealing member 112 may be formed of an elastic material such as rubber, EPDM, or other suitable elastomer. The sealing member 112 is shown as an O-ring having a circular cross-section. The sealing member 112 is configured to fit into the connector body 110 and seal against the connector body, and form a substantially fluid-tight seal with a conduit passing through the inner diameter of the sealing member 112. In this way, the sealing member 112 provides an outer diameter seal for the passing conduit and allows for easier insertion. For example, the sealing members 112 located at the respective first end 120 and second end 122 of the connector body 110 are respectively positioned on the outer bodies of the first conduit 106 and the second conduit 108 to provide sufficient sealing for the first conduit 106 and the second conduit 108 within the connector body 110.

[0071] Turning again to Figure 6 , the connector body 110 includes an internal annular chamber 186 having an annular surface 188 within the connector body 110, and the annular surface is configured to provide a seat for the sealing member 112. That is, the sealing member 112 can be received within the internal annular chamber 186 and pressed against the annular surface 188 to provide sufficient sealing for the first conduit 106 and the second conduit 108 within the connector body 110.

[0072] When the retainer cap 118 is inserted into the connector body 110, the second end 136 of the retainer cap 118 supports the snap ring 116. The snap ring 116 has a ring 190 that engages with the second end 136 of the retainer cap 118 when the retainer cap 118 is attached to the connector body 110 (i.e., when the connector assembly 100 is assembled). The snap ring 116 further includes a plurality of axially inward teeth 192 that are inclined relative to the ring 190 and surround the longitudinal axis X. The snap ring 116 is configured to respectively fix the first conduit 106 and the second conduit 108 within the connector body 110 and prevent the conduits 106, 108 from exiting the connector body 110. That is, the plurality of axially inward teeth 192 of the snap ring 116 are configured to respectively grip the outer surfaces of the first conduit 106 and the second conduit 108. The snap ring 116 may be formed of a metal such as stainless steel.

[0073] The protective ring 114 is partially positioned within the internal annular chamber 186 of the connector body 110. The protective ring 114 and the retainer cap 118 are held together to secure the snap ring 116 between the retainer cap 118 and the protective ring 114. The protective ring 114 includes an inclined surface 194 that slopes inwardly and toward the distal end 196 of the protective ring 114 so as to be generally aligned with a plurality of axially inward teeth 192 of the snap ring 116. The protective ring 114 can help prevent the plurality of axially inward teeth 192 from contacting and damaging the seal member 112. The plurality of axially inward teeth 192 are configured to bend radially outwardly and toward the inclined surface 194 of the protective ring 114 when the first conduit 106 and the second conduit 108 pass through the opening formed by the ring 190 and the plurality of axially inward teeth 192 of the snap ring 116. The protective ring 114 can be made of a suitable plastic, such as including but not limited to thermoplastics, such as nylon fiber.

[0074] Another embodiment of the connector assembly 200 is shown in Figures 10 to 11 FIGs. The connector assembly 200 is substantially similar to the connector assembly 100 shown in FIGS. 1 to Figure 9 FIGs. The disclosure of the connector assembly 200 is similar to that of the connector assembly 100. The differences between assemblies 100 and 200 will be discussed below and shown in Figures 10 to 11 FIGs.

[0075] Figure 10 A partial exploded view of the connector assembly 200 is shown, showing the retainer cap 218, the seal member 212, the protective ring 214, and the snap ring 216 separated from the connector body 210 at the second end 222. As shown, the connector body 210 does not include a through hole. The connector body 210 can have a generally cylindrical shape and a generally uniform outer surface. The connector body 210 can have a recess 270 in the outer surface, thereby providing visibility within the connector body 210. In addition to the recess 270, the connector body 210 can have an outer surface without holes, grooves, and / or additional depressions, such that the surface is generally uniform / continuous. In an additional or alternative embodiment, the recess 270 can be excluded to have a generally continuous cylindrical outer surface.

[0076] The connector body 210 includes a plurality of internal recesses or depressions 262 formed in the inner surface of the connector body 210 and located within the wall defining the fluid passage extending through the first and second ends of the connector body 210. The depressions 262 are sized such that the retaining projections 252 of the retainer cap 218 can engage and be secured within the body interior 224.

[0077] As Figure 11As shown, the internal recess or indentation 262 of the connector assembly 200 is formed as a recess or undercut within the inner wall of the connector body 210 and does not penetrate the outer surface of the connector body 210. When the retainer cap 218 is inserted into the respective first end opening 230 and second end opening 232 of the connector body 210, the retaining protrusions 252 of the plurality of flexible legs 248 mate within a respective one of the plurality of recesses or indentations 262 formed within the inner wall of the connector body 210 to connect the retainer cap 218 to the connector body 210.

[0078] Each of the plurality of flexible legs 248 includes a hook portion 260 sized such that the retaining protrusion 252 mates into a respective internal recess 262 defined in the connector body 210 to form an internal snap-fit connection. As shown, the connector body 210 includes four recesses 262 adjacent the first end 220 and four recesses 262 adjacent the second end 222, although alternatives are possible. The four recesses 262 at the first end 220 and the second end 222 are evenly spaced within the body interior 224 of the connector body 210 and do not penetrate the outer surface of the connector body 210. When the retainer cap 218 is inserted into the respective first end opening 230 and second end opening 232 of the connector body 210, the retaining protrusions 252 of the plurality of flexible legs 248 are secured within a respective one of the plurality of recesses 262 in the connector body 210. In some examples, the entire connector body 210 or a portion thereof may be light transmissive or transparent to provide visibility of the indication area 268 ( Figure 10 ) and / or the connection of the retaining protrusion 252 held within the respective undercut recess 262 defined in the connector body 210.

[0079] From the foregoing detailed description, it will be apparent that modifications and variations are possible without departing from the spirit and scope of the present disclosure.

Claims

1. A retainer cap for a connector, the connector including a connector body having a first end opening and a second end opening, the retainer cap including: A body including a substantially continuous outer surface sized to fit within one of the first end opening and the second end opening of the connector body, the body having a first end and a second end; An edge positioned at the first end of the body, the edge overhanging the outer surface of the body such that when the retainer cap is inserted into one of the first end opening and the second end opening of the connector body, the edge abuts an end face of the connector body and prevents further insertion of the retainer cap into one of the first end opening and the second end opening; A plurality of longitudinal through slots evenly spaced around the body, the plurality of longitudinal through slots having an open side at the second end of the body and an opposite closed side; And A plurality of flexible legs defined by the body remaining between adjacent slots, the plurality of flexible legs each having a free end, and wherein each of the plurality of flexible legs includes a retaining protrusion at the free end for securing the retainer cap to the connector body.

2. The retainer cap according to claim 1, wherein, The retaining protrusion of the plurality of flexible legs includes an inclined surface that tapers outwardly in a direction from the second end of the retainer cap toward the first end of the retainer cap.

3. The retainer cap according to claim 1, wherein, The edge is sized to be larger than the opening of the retainer cap.

4. The retainer cap according to claim 1, wherein, The retaining protrusion has a trapezoidal shape.

5. The retainer cap according to claim 1, wherein, The plurality of longitudinal through slots extend along most of the body.

6. The retainer cap according to claim 1, wherein, The retainer cap includes four longitudinal through slots evenly spaced around the body.

7. The retainer cap according to claim 1, wherein, The retainer cap includes four flexible legs evenly spaced around the body between adjacent slots.

8. The retainer cap according to claim 1, wherein, The retaining protrusion includes a locking edge configured to hook the retaining protrusion into a hole defined in the connector body to form an internal snap-fit connection with the connector body.

9. The retainer cap according to claim 1, wherein, The retaining protrusion extends radially outward from the body.

10. The retainer cap according to claim 1, wherein, The plurality of longitudinal through slots have a U shape.

11. The retainer cap according to claim 1, wherein, The closed side of each of the plurality of longitudinal through slots includes a flat inner surface.

12. The retainer cap according to claim 1, wherein, The plurality of flexible legs are integrally formed with the body of the retainer cap.

13. The retainer cap according to claim 1, wherein, Alternating longitudinal through slots and flexible legs form a continuous edge surface with a curved transition, the edge surface including a substantially flat inner surface at the closed side of a single longitudinal through slot and a substantially flat surface at the free end of the flexible leg.

14. The retainer cap according to claim 1, wherein, The width of a single flexible leg is greater than the width of a single retaining protrusion.

15. The retainer cap according to claim 1, wherein, The width of a single through slot is substantially similar to the width of a single retaining protrusion.

16. A connector assembly, including: A connector body having a first end defining a first end opening and an opposite second end defining a second end opening, the connector body defining a fluid passage extending through the first end and the second end, the connector body including a plurality of holes; A first sealing member and a second sealing member, the first sealing member configured to be inserted into the first end opening of the connector body to form a sealed engagement with a first fluid conduit, the second sealing member configured to be inserted into the second end opening of the connector body to form a sealed engagement with a second fluid conduit; A first retaining ring and a second retaining ring, the first retaining ring including a plurality of teeth configured to be coupled to the first fluid conduit, the second retaining ring including a plurality of teeth configured to be coupled to the second fluid conduit; A first protective ring and a second protective ring, the first protective ring being partially positioned within the connector body between the first retaining ring and the first sealing ring and adjacent to the first end of the connector body, the second protective ring being partially positioned within the connector body between the second retaining ring and the second sealing ring and adjacent to the second end of the connector body; And A first retainer cap and a second retainer cap, the first retainer cap and the second retainer cap each having a body with a substantially continuous outer surface, the first retainer cap and the second retainer cap being sized to fit respectively within the first end opening and the second end opening of the connector body, the bodies of the first retainer cap and the second retainer cap each having a first end and a second end, the first retainer cap and the second retainer cap each including: A rim positioned at the first end of the body of the first retainer cap and the second retainer cap respectively, the rim overhanging the outer surface of the body such that when the respective first retainer cap and the second retainer cap are inserted into the respective first end opening and the second end opening of the connector body, the rim abuts the end face of the connector body at the first end and the second end of the connector body and prevents further insertion of the first retainer cap and the second retainer cap into the first end opening and the second end opening; A plurality of longitudinally extending slots evenly spaced around the body, the plurality of longitudinally extending slots having an open side at the second end of the body and an opposite closed side; and A plurality of flexible legs defined by the body remaining between adjacent slots, the plurality of flexible legs each having a free end, and wherein the plurality of flexible legs each include a retaining protrusion at the free end for respectively securing the first retainer cap and the second retainer cap to the connector body.

17. The connector assembly according to claim 16, wherein, The plurality of flexible legs are integrally formed with the bodies of the first retainer cap and the second retainer cap.

18. The connector assembly according to claim 16, wherein, When the corresponding first retainer cap and second retainer cap are inserted into the corresponding first end opening and second end opening of the connector body, the retaining protrusions of the plurality of flexible legs are adapted to engage a corresponding one of the plurality of holes of the connector body.

19. The connector assembly according to claim 16, wherein, The connector body includes four holes adjacent its first end and four holes adjacent its second end, wherein the four holes at each of the first end and the second end are evenly spaced around the connector body.

20. The connector assembly according to claim 19, wherein, The first retainer cap and the second retainer cap each include four flexible legs, and the four flexible legs are evenly spaced around the respective bodies of the corresponding first retainer cap and second retainer cap between adjacent longitudinal through slots.

21. The connector assembly according to claim 20, wherein, When the corresponding first retainer cap and second retainer cap are inserted into the corresponding first end opening and second end opening of the connector body, the retaining protrusions of the four flexible legs are aligned with the four holes at the corresponding first end and second end of the connector body to snap into the four holes, thereby fixing the first retainer cap and second retainer cap to the connector body.

22. The connector assembly according to claim 16, wherein, The retaining protrusion has a trapezoidal shape.

23. The connector assembly according to claim 16, wherein, The closed side of each of the plurality of longitudinal through slots includes a flat inner surface.

24. The connector assembly according to claim 16, wherein, The connector body includes at least a portion having a translucent plastic construction, wherein the portion of the connector body including the translucent plastic construction at least partially defines a visible indication area.

25. The connector assembly according to claim 24, wherein, The visible indication area provides a visible indication of two positions of the first fluid conduit and the second fluid conduit inside the connector body, wherein the first position of the first fluid conduit and the second fluid conduit includes a position where the first fluid conduit and the second fluid conduit are respectively inserted beyond the sealing portion of the connector body but not fully inserted to a predetermined depth defined by a conduit stop within the connector body.

26. The connector assembly according to claim 25, wherein, The second position of the first conduit and the second conduit includes a position where the first conduit and the second conduit are sealed and fully inserted to the predetermined depth within the connector body.

27. A method of assembling a connection fitting, the method comprising: obtaining a connector body that defines a passage extending therethrough, the connector body configured to receive a conduit and having an end stop; positioning an O-ring seal member in the passage of the connector body; positioning a protective ring near an end of the connector body; positioning a snap ring adjacent a protruding ring such that the protective ring is partially positioned within the connector body between the snap ring and the seal ring; and positioning a retainer cap on the connector body, the snap ring being held with the assistance of the retainer cap, the snap ring configured to grip an outer surface of the conduit, the retainer cap including: a body that includes a substantially continuous outer surface sized to fit within one of the first end opening and the second end opening of the connector body, the body having a first end and a second end; An edge, which is positioned at the first end of the body, and the edge projects on the outer surface of the body such that when the retainer cap is inserted into one of the first end opening and the second end opening of the connector body, the edge abuts against the end face of the connector body and prevents the retainer cap from being further inserted into one of the first end opening and the second end opening; A plurality of longitudinal through slots, which are evenly spaced around the body, and the plurality of longitudinal through slots have an open side at the second end of the body and an opposite closed side; and A plurality of flexible feet, which are defined by the body remaining between adjacent through slots, each of the plurality of flexible feet has a free end, and wherein each of the plurality of flexible feet includes a retaining protrusion at the free end for fixing the retainer cap to the connector body.

28. The method according to claim 27, wherein, The connector body has a light-transmissive portion with a plastic structure, and the connector body includes an indication area at least partially defined by the light-transmissive portion of the connector body, and the indication area provides an indication of two positions of the conduit, and the two positions include a first position where the conduit is partially inserted and sealed by the O-ring seal member and a second position where the conduit is fully inserted to engage the end stop.

29. The method according to claim 27, wherein The conduit is removably configured to be inserted into the passage of the connector body.

30. The method according to claim 27, wherein The two positions of the conduit are visible to the naked eye.

31. A connector assembly, comprising: A connector body having a first end defining a first end opening and a second end opposite thereto defining a second end opening, the connector body defining a fluid passage extending through the first end and the second end, and the connector body includes a plurality of internal recesses in the wall of the connector body within the fluid passage; A first seal member and a second seal member, the first seal member is configured to be inserted into the first end opening of the connector body to form a sealed engagement with a first fluid conduit, and the second seal member is configured to be inserted into the second end opening of the connector body to form a sealed engagement with a second fluid conduit; A first retaining ring and a second retaining ring, the first retaining ring includes a plurality of teeth configured to be coupled to the first fluid conduit, and the second retaining ring includes a plurality of teeth configured to be coupled to the second fluid conduit; A first protective ring and a second protective ring, the first protective ring is partially positioned within the connector body between the first retaining ring and the first seal ring and adjacent to the first end of the connector body, and the second protective ring is partially positioned within the connector body between the second retaining ring and the second seal ring and adjacent to the second end of the connector body; And A first retainer cap and a second retainer cap, the first retainer cap and the second retainer cap each having a body with a substantially continuous outer surface, the first retainer cap and the second retainer cap being sized to fit respectively within a first end opening and a second end opening of the connector body, the bodies of the first retainer cap and the second retainer cap each having a first end and a second end, and the first retainer cap and the second retainer cap each comprising: An edge, the edge being located at the first end of the body of the first retainer cap and the second retainer cap respectively, the edge overhanging on the outer surface of the body, such that when the respective first retainer cap and second retainer cap are inserted into the respective first end opening and second end opening of the connector body, the edge abuts against the end face of the connector body at the first end and the second end of the connector body, and prevents the first retainer cap and the second retainer cap from being further inserted into the first end opening and the second end opening; A plurality of longitudinal through slots, the plurality of longitudinal through slots being evenly spaced around the body, the plurality of longitudinal through slots having an open side and an opposite closed side at the second end of the body; and A plurality of flexible legs, the plurality of flexible legs being defined by the body remaining between adjacent through slots, the plurality of flexible legs each having a free end, and wherein the plurality of flexible legs each include a retaining protrusion at the free end for respectively fixing the first retainer cap and the second retainer cap to the connector body, the retaining protrusion being sized to connect with the internal recess of the connector body.

32. The connector assembly according to claim 31, wherein, Each of the first retainer cap and the second retainer cap further includes an edge surface formed by alternating longitudinal through slots and flexible legs and having a continuous curved transition portion, the edge surface including a substantially flat inner surface at the closed side of a single longitudinal through slot and a substantially flat surface at the free end of the flexible leg.

33. The connector assembly according to claim 31, wherein, For each of the first retainer cap and the second retainer cap, the width of a single flexible leg is greater than the width of a single retaining protrusion.

34. The connector assembly according to claim 31, wherein, For each of the first retainer cap and the second retainer cap, the width of a single through slot is substantially similar to the width of a single retaining protrusion.

Images