Fluid connector and inverter assembly

Abstract

A fluid connector for a housing includes a tubular body, a plurality of helical fins, and an annular flange. The fluid connector includes a plurality of locking elements that are at least partially received in corresponding openings of the housing. Further, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be at least partially inserted within the housing, and the fluid connector is rotatable relative to the housing. Further, during rotation of the fluid connector from the first angular orientation to the second angular orientation, the helical fin movably engages the housing such that rotation of the fluid connector results in corresponding translation of the fluid connector into the housing.

Description

Technical Field

[0001] The present invention relates to an inverter assembly and also to a fluid connector coupled to a housing of the inverter assembly. Background Art

[0002] Vehicles, such as electric vehicles, hybrid vehicles, etc., typically include an inverter assembly. The inverter assembly may include various electrical and electronic components. The electrical and electronic components may include, for example, inductors, power modules such as batteries, fuel cells, or combinations thereof, computer chips, power circuits, printed circuit boards (PCBs), microprocessors, microcontrollers, etc. These electrical and electronic components typically generate heat during operation. The heating of electrical or electronic components may affect the performance of the inverter assembly, and in some cases, the heating may also cause irreparable damage to the electrical or electronic components, which is undesirable. In addition, the heat generated by the electrical and electronic components during operation may affect the performance of other components disposed proximate to the electrical or electronic components. Therefore, a cooling structure may be required to dissipate the heat generated by the electrical or electronic components.

[0003] The cooling device generally includes a cooling channel disposed in a housing of the inverter assembly. A cooling fluid may flow through the cooling channel to cool one or more electrical or electronic components disposed proximal to the cooling channel. Further, the cooling fluid enters the cooling channel via a fluid inlet and leaves the cooling channel via a fluid outlet. Typically, an inlet fluid connector is coupled to the fluid inlet to introduce the cooling fluid into the fluid inlet, and an outlet fluid connector is coupled to the fluid outlet to receive the cooling fluid from the fluid outlet.

[0004] Conventionally, the inlet fluid connector and the outlet fluid connector are coupled to the housing via a plurality of mechanical fasteners such as bolts, screws, etc. In some cases, three or more mechanical fasteners may be required to connect each of the inlet fluid connector and the outlet fluid connector to the housing, which may increase assembly time and workload, and may also increase the number of parts associated with the inverter assembly. Alternatively, the inlet fluid connector and the outlet fluid connector may be coupled to the housing via a threaded connection. For example, the threads on the inlet fluid connector and the outlet fluid connector may engage with threads defined on the housing. In this case, the inlet fluid connector and the outlet fluid connector may have to be rotated multiple times so that the inlet fluid connector and the outlet fluid connector are properly engaged with the housing.

[0005] Conventional techniques for connecting the inlet and outlet fluid connectors to the housing may not be conducive to high-volume production settings. More specifically, connecting the inlet and outlet fluid connectors using mechanical fasteners or threaded connections may be time consuming and may affect the overall efficiency of the production line. Further, the inlet and outlet fluid connectors themselves may require additional tools to assemble and disassemble. In addition, conventional techniques for connecting the inlet and outlet fluid connectors may increase the assembly time and manufacturing costs associated with the inverter assembly, which is undesirable. In some cases, such conventional techniques may not provide a leak-proof joint, which is also undesirable.

[0006] Therefore, there is a need in the art for an improved inverter assembly that can eliminate or minimize various limitations of existing inverter assemblies. There is also a need to reduce the assembly time of the inverter assembly, reduce the number of parts associated with the inverter assembly, and reduce the manufacturing cost of the inverter assembly. Further, it is desirable to have an inverter assembly suitable for a high-volume production setting. Summary of the invention

[0007] As described above, there are a number of disadvantages to current techniques for connecting the inlet and outlet fluid connectors to the housing of an inverter assembly. For example, some conventional techniques may require additional components, such as multiple mechanical fasteners, which may increase the cost and time associated with connecting the inlet and outlet fluid connectors to the housing. Further, conventional techniques for connecting the inlet and outlet fluid connectors to the housing may not provide a leak-proof joint and may also increase the complexity associated with manufacturing such inverter assemblies.

[0008] An object of the present invention is to provide an improved inverter assembly that is easy to assemble and that can improve the manufacturability of the inverter assembly. Specifically, an object of the present invention is to provide an inverter assembly that includes an inlet fluid connector and an outlet fluid connector that can be connected to a housing of the inverter assembly in a time-efficient manner and that can also reduce the number of components required to connect the inlet fluid connector and the outlet fluid connector to the housing. Further, a connection technique is also contemplated that can be cost-effective and can reduce the assembly time of the inverter assembly. In addition, it is desirable to provide a compact, lightweight, and leak-proof inverter assembly.

[0009] According to a first aspect of the present invention, a fluid connector for a housing includes a tubular body extending between a first end and a second end along a longitudinal axis and including an outer surface. The outer surface includes a radial sealing area, which is arranged proximal to the first end of the tubular body and is configured to radially engage with the housing relative to the longitudinal axis. The fluid connector also includes a plurality of spiral fins extending from the outer surface of the tubular body. The spiral fins are angularly spaced apart from each other and are axially arranged between the radial sealing area and the second end of the tubular body relative to the longitudinal axis. Each spiral fin extends spirally toward the radial sealing area along the longitudinal axis. The fluid connector also includes an annular flange extending from the second end of the tubular body. The annular flange includes a first axial surface facing the tubular body and a second axial surface opposite to the first axial surface. The first axial surface includes an axial sealing area, which is configured to axially engage with the housing along the longitudinal axis. The fluid connector includes a plurality of locking elements, which are arranged adjacent to the annular flange relative to the tubular body and are angularly spaced apart from each other relative to the longitudinal axis. Each locking element is configured to be at least partially received in a corresponding opening of the housing to lock the fluid connector rotationally relative to the housing. Further, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be at least partially inserted into the housing, and the fluid connector is rotatable relative to the housing. In addition, when the fluid connector is rotated from the first angular orientation to a predetermined angle relative to the housing to a second angular orientation, the spiral fins engage the corresponding cam protrusions of the housing to axially fix the fluid connector to the housing relative to the longitudinal axis. Further, the radial sealing area radially engages the housing, the axial sealing area axially engages the housing, and each locking element is at least partially received in the corresponding opening to rotationally lock the fluid connector relative to the housing. In addition, during the rotation of the fluid connector from the first angular orientation to the second angular orientation, the spiral fins movably engage the housing so that the rotation of the fluid connector causes a corresponding translation of the fluid connector into the housing along the longitudinal axis.

[0010] Optionally, the predetermined angle is 90 degrees.

[0011] Optionally, the fluid connector further comprises a plurality of extensions, which correspond to the plurality of spiral fins and are arranged on the tubular body, wherein each extension extends axially from a corresponding spiral fin along the longitudinal axis toward the radial sealing area.

[0012] Optionally, the tubular body further comprises an annular step axially disposed between the radial sealing area and the plurality of spiral fins.

[0013] Optionally, the fluid connector further comprises a tubular coupling portion in fluid communication with the tubular body. The tubular coupling portion is integral with the tubular body or connected to the tubular body at the second end of the tubular body. Further, the tubular coupling portion extends from the annular flange and is configured to be coupled to a fluid conduit.

[0014] Optionally, the fluid connector further comprises an annular protrusion extending radially from the tubular coupling portion adjacent the annular flange. Each locking element extends radially from the annular protrusion.

[0015] Optionally, the tubular coupling is elbow-shaped.

[0016] Optionally, the tubular body further comprises an annular body groove at the first end. The annular body groove is configured to receive the first sealing member therein.

[0017] Optionally, the annular flange further comprises an annular flange groove surrounding the axial sealing area. The annular flange groove is configured to receive the second sealing member therein.

[0018] Optionally, the plurality of spiral fins comprises two spiral fins. Each of the two spiral fins comprises an angular extent of 90 degrees around the longitudinal axis.

[0019] Optionally, each locking element comprises a tapered end portion configured to be at least partially received in the corresponding opening.

[0020] Optionally, the plurality of locking elements comprises two locking elements angularly separated from each other by 180 degrees.

[0021] According to a second aspect of the present invention, an inverter assembly includes a housing having a cooling channel. The inverter assembly also includes a fluid inlet in fluid communication with the cooling channel. The inverter assembly also includes a fluid outlet in fluid communication with the cooling channel. The inverter assembly includes a first fluid connector of the first aspect. The first fluid connector is coupled to the housing and is in fluid communication with the fluid inlet. The first fluid connector is configured to supply fluid to the fluid inlet. The inverter assembly also includes a second fluid connector of the first aspect. The second fluid connector is coupled to the housing and is in fluid communication with the fluid outlet. The second fluid connector is configured to receive fluid from the fluid outlet.

[0022] Optionally, the housing includes a first connection section configured to couple with a first fluid connector and a second connection section configured to couple with a second fluid connector. Each of the first connection section and the second connection section includes an annular surface defining a channel configured to receive a corresponding fluid connector of the first fluid connector and the second fluid connector at least partially therein. The annular surface includes an annular sealing area configured to engage with a radial sealing area of ​​the corresponding fluid connector, wherein the channel is arranged to be in fluid communication with the corresponding fluid inlet or fluid outlet, and the annular sealing area is arranged proximal to the corresponding fluid inlet or fluid outlet.

[0023] Optionally, each of the first connection section and the second connection section also includes an annular end member, which is arranged adjacent to the annular surface and is arranged at the distal end of the corresponding fluid inlet or fluid outlet. The annular end member includes an axial sealing surface, which is configured to engage with the axial sealing area of ​​the corresponding fluid connector. The annular end member also includes a plurality of cam protrusions, which are arranged adjacent to the axial sealing surface and are angularly spaced apart from each other. Each cam protrusion extends radially inward and includes a cam surface facing the annular surface. In the first angular orientation of the corresponding fluid connector, the plurality of cam protrusions allow the corresponding fluid connector to be inserted into the annular end member and the annular surface. Further, in the second angular orientation of the corresponding fluid connector, each cam protrusion engages with the corresponding spiral fin of the plurality of spiral fins of the corresponding fluid connector to axially fix the corresponding fluid connector to the housing. Further, during the rotation of the corresponding fluid connector from the first angular orientation to the second angular orientation, the cam surface of each cam protrusion is configured to engage movably with the corresponding spiral fin of the corresponding fluid connector to translate the corresponding fluid connector toward the annular surface. The annular end member also includes a plurality of locking tabs disposed adjacent to the axial sealing surface relative to the plurality of cam projections. In a second angular orientation of the corresponding fluid connector, each locking tab defines an opening configured to at least partially receive a corresponding locking element of the plurality of locking elements of the corresponding fluid connector to rotationally lock the corresponding fluid connector relative to the housing.

[0024] Optionally, the annular surface includes one or more steps disposed axially between the annular sealing area and the annular end member.

[0025] Optionally, the annular end member further comprises a plurality of axial stops which are angularly spaced apart from each other and are axially disposed between the plurality of cam projections and the annular surface. Further, each axial stop extends radially inwardly.

[0026] Optionally, the annular end member further comprises a plurality of axial ribs angularly spaced apart from each other. Each axial rib axially extends from a corresponding cam protrusion of the cam protrusions to a corresponding axial stop of the axial stop.

[0027] Optionally, the annular end member is at least partially arranged outside relative to the housing, so that in the coupled state of the corresponding fluid connector, at least the second axial surface of the annular flange and a plurality of locking elements of the corresponding fluid connector are arranged outside relative to the housing.

[0028] Optionally, the annular end member further comprises angular cutouts spaced apart at an angle from each other. Each angular cutout is angularly disposed between adjacent cam projections. In a first angular orientation of the corresponding fluid connector, each angular cutout is angularly aligned with a corresponding spiral fin of a plurality of spiral fins of the corresponding fluid connector to allow the corresponding fluid connector to be inserted into the annular end member and the annular surface. Further, in a second angular orientation of the corresponding fluid connector, the plurality of spiral fins are angularly misaligned with the plurality of spiral fins.

[0029] Optionally, each of the first fluid connector and the second fluid connector is a single unitary component.

[0030] As described above, conventional techniques for connecting a fluid connector to a housing may have some disadvantages. Specifically, conventional techniques may be time consuming, may involve the use of multiple components, and may be costly. The present disclosure describes an improved design of an inverter assembly that may have a simple structure and may be easy to assemble and disassemble. Further, the first fluid connector and the second fluid connector described herein may reduce the time and cost associated with assembling and disassembling the first fluid connector and the second fluid connector to the housing, while improving the manufacturability of the inverter assembly. In addition, the first fluid connector and the second fluid connector may be assembled or disassembled without the need for additional tools for assembly and disassembly.

[0031] The first and second fluid connectors described herein can provide axial and radial seals, thereby providing a leak-proof connection between the housing and the corresponding first and second fluid connectors. In addition, the first and second fluid connectors can be sealed to the housing using standard O-rings. Further, the first and second fluid connectors can be implemented as cost-effective injection molded parts, thereby reducing the manufacturing costs associated with the inverter assembly. The use of the first and second fluid connectors can also reduce or eliminate many additional components required by conventional connection techniques, such as multiple mechanical fasteners. Further, the technique of connecting the first and second fluid connectors as described herein can reduce the manufacturing costs of the inverter assembly while improving the efficiency of the production line.

[0032] The present invention will be further explained with reference to the accompanying drawings of exemplary embodiments. The embodiments may be combined with each other or may be applied separately from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In each of the accompanying drawings, the same reference numerals represent the same elements or elements with similar functions. Further, only the reference numerals required to describe the corresponding figures are shown in the figures. The embodiments shown are merely examples of how the present invention is implemented. This should not be considered as a limitation of the present invention.

[0034] For a better understanding of the invention, and to more clearly show how the invention may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0035] Figure 1 A top perspective view of an inverter assembly according to an embodiment of the present invention is shown;

[0036] Figure 2 The embodiment according to the present invention is shown Figure 1 A perspective view of a first connecting section and a second connecting section of a housing of an inverter assembly;

[0037] Figure 3 and 4 The embodiment according to the present invention is shown Figure 1 Different perspective views of a first fluid connector of an inverter assembly;

[0038] Figure 5 The embodiment according to the present invention is shown Figure 3 and 4 a cut-away perspective view of a first fluid connector at least partially received within the housing at a first angle orientation;

[0039] Figure 6 The embodiment according to the present invention is shown Figure 3 and 4 a cross-sectional perspective view of a first fluid connector in the embodiment of the present invention, wherein the first fluid connector is oriented to be connected to the housing at a second angle;

[0040] Figure 7 and 8 The embodiment according to the present invention is shown Figure 1 Different perspective views of a second fluid connector of an inverter assembly;

[0041] Fig. 9 The embodiment according to the present invention is shown Figure 7 and 8 a cross-sectional perspective view of a second fluid connector in the embodiment of the present invention, the second fluid connector being at least partially received within the housing in a first angle orientation; and

[0042] Fig.10The embodiment according to the present invention is shown Figure 7 and 8 A cross-sectional perspective view of a second fluid connector in the embodiment of the present invention, wherein the second fluid connector is oriented to be connected to the housing at a second angle. DETAILED DESCRIPTION

[0043] In the present application, similar or corresponding features are indicated by similar or corresponding reference numerals. The description of the various embodiments is not limited to the examples shown in the drawings, and the reference numerals used in the detailed description and claims are not intended to limit the description of the embodiments, but rather to clarify the embodiments by reference to the examples shown in the drawings by including these reference numerals.

[0044] As described above, there is a need in the art for an improved inverter assembly and an assembly method thereof, and in particular, an improved inverter assembly is needed to eliminate or minimize various limitations of existing inverter assemblies. Furthermore, there is a need to reduce the time required in the assembly process of the inverter assembly to meet the needs of mass production and reduce the manufacturing cost of the inverter assembly.

[0045] Figure 1 A top perspective view of an inverter assembly 100 according to an embodiment of the present disclosure is shown. The inverter assembly 100 may be associated with a vehicle (not shown), such as an electric vehicle, a hybrid vehicle, etc. In one example, the inverter assembly 100 may be coupled to a powertrain unit of the vehicle. The inverter assembly 100 may provide a three-phase voltage to the powertrain unit.

[0046] The inverter assembly 100 may include one or more electrical components (not shown) and / or electronic components (not shown). For example, the inverter assembly 100 may include an inductor and / or a power module, such as a battery, a fuel cell, or a combination thereof. Further, the inverter assembly 100 may include a computer chip, a power circuit, one or more printed circuit boards (PCBs), a microprocessor, a microcontroller, etc. In addition, the inverter assembly 100 may include various electromagnetic interference (EMI) filtering devices, such as EMI shielding.

[0047] The inverter assembly 100 may include structures for dissipating heat generated by electrical and / or electronic components during operation thereof. Thus, the inverter assembly 100 includes a housing 102 having a cooling channel 104. Further, the inverter assembly 100 also includes a first fluid connector 400 and a second fluid connector 800. The first fluid connector 400 may be interchangeably referred to as a fluid connector 400, and the second fluid connector 800 may be interchangeably referred to as a fluid connector 800. The fluid connector 400 may be oriented at a first angle (at Figure 5 ) and a second angle orientation (shown in Figure 6 ), the fluid connector 800 can be oriented at a first angle (in Fig. 9 ) and a second angle orientation (shown in Fig.10 The first angular orientation may represent a non-connected state of the corresponding fluid connector 400, 800 and the housing 102. In addition, the second angular orientation may represent a connected state of the corresponding fluid connector 400, 800 and the housing 102. The first fluid connector 400 and the second fluid connector 800 will be described in detail later in this section.

[0048] like Figure 1 As shown, the housing 102 defines a first side 106 and a second side 108 opposite to the first side 106. The housing 102 of the inverter assembly 100 can be substantially rectangular. The housing 102 defines a length L1, a width W1 and a height (not shown). The length L1, the width W1 and the height can be selected according to the application requirements. The housing 102 can be implemented as a single-piece integral casting component. Alternatively, the various components of the housing 102 can be manufactured as separate components that are assembled together by a suitable joining process. For example, the cooling channel 104 can form a part of a separate cooling circuit installed in the housing 102. The housing 102 can be manufactured using a die casting technique. Further, the housing 102 can be manufactured using an alloy. In an embodiment, the housing 102 can be made of an aluminum-based alloy. In other embodiments, the housing 102 can be made of one or more of a zinc-based alloy, a copper-based alloy, a magnesium-based alloy, a tin-based alloy, etc. It should be noted that the housing 102 can be manufactured using any other technology and / or material without any limitation.

[0049] The housing 102 may allow for mounting of electrical and / or electronic components of the inverter assembly 100. Typically, the electrical and / or electronic components may be arranged so that they are aligned with the cooling passage 104 to establish heat transfer between the electrical and / or electronic components and the fluid flowing through the cooling passage 104. The fluid may include any coolant that facilitates heat transfer. The fluid may include water, a mixture of ethylene glycol and water, and the like. It should be noted that any other fluid may flow through the cooling passage 104 without limiting the scope of the present disclosure.

[0050] Further, the cooling channel 104 is substantially U-shaped. The cooling channel 104 extends from the main surface 110 of the housing 102. Specifically, the cooling channel 104 is at least partially defined by a first side surface 112, a second side surface 114, and a bottom surface 116. The first side surface 112 includes a plurality of first protrusions 118, and the second side surface 114 includes a plurality of second protrusions 120. The first protrusions 118 and the second protrusions 120 can increase the heat transfer rate between the electrical and / or electronic components and the fluid. Figure 1In the illustrated embodiment, each first protrusion 118 has a convex shape (convex surface shape), and each second protrusion 120 has a convex shape. In other embodiments, the first protrusion 118 and the second protrusion 120 may also include any other shape, such as concave, square, rectangular, triangular, etc., without any limitation.

[0051] The housing 102 also includes a plurality of fins 122 extending from the bottom surface 116 to the cooling channel 104. The fins 122 can increase the heat transfer rate between the electrical and / or electronic components and the fluid. Specifically, the fins 122 can increase the surface area of ​​the cooling channel 104, which in turn can improve the heat transfer rate between the electrical and / or electronic components and the fluid. The fins 122 herein include an elliptical cross section and an elongated elliptical cross section. Alternatively, the fins 122 may include any other cross section, such as a square, a rectangle, a triangle, etc., without any limitation.

[0052] The inverter assembly 100 may also include a cover (not shown) connected to the housing 102 for covering the cooling channel 104. The cover may be connected to the housing 102 by mechanical fasteners, welding, brazing, soldering, etc. In one example, the cover of the inverter assembly 100 may be substantially U-shaped and may correspond to the shape of the cooling channel 104. In another example, the cover of the inverter assembly 100 may be substantially rectangular and may correspond to the shape of the main surface 110.

[0053] Additionally, the housing 102 may include one or more mounting brackets 124. The mounting brackets 124 may assist in mounting the inverter assembly 100. Each mounting bracket 124 may define a through hole to receive a mechanical fastener (not shown), such as a screw, bolt, rivet, etc. Figure 1 In the illustrated embodiment, the inverter assembly 100 includes four mounting brackets 124 , but this does not limit the scope of the present disclosure.

[0054] The inverter assembly 100 also includes a fluid inlet 126 (at Figure 5 and 6 104 ), which is in fluid communication with the cooling passage 104. The fluid inlet 126 is configured to receive fluid from a first fluid conduit 128. The first fluid conduit 128 may be interchangeably referred to as the fluid conduit 128. Specifically, the fluid inlet 126 is fluidically coupled to the cooling passage 104 to allow fluid to be introduced into the cooling passage 104. The fluid inlet 126 may be defined proximal to the first side 106 of the housing 102. In an example, the housing 102 may include an inlet member (not shown) defining the fluid inlet 126. The inlet member may be in fluid communication with the cooling passage 104.

[0055] The inverter assembly 100 also includes a fluid outlet 130 (at Fig. 9 and 10104 ), which is in fluid communication with the cooling passage 104. The fluid outlet 130 is configured to direct the fluid toward the second fluid conduit 132. The second fluid conduit 132 may be interchangeably referred to as the fluid conduit 132. Specifically, the fluid outlet 130 is fluidically coupled to the cooling passage 104 to allow the fluid to exit from the cooling passage 104. The fluid outlet 130 may be coupled to the housing 102 proximal to the second side 108 of the housing 102. In an example, the housing 102 may include an outlet member (not shown) defining the fluid outlet 130. The outlet member may be in fluid communication with the cooling passage 104.

[0056] Further, the housing 102 includes a first connection section 134 configured to be coupled to the first fluid connector 400 and a second connection section 136 configured to be coupled to the second fluid connector 800. The first connection section 134 is disposed at the first side 106 of the housing 102, and the second connection section 136 is disposed at the second side 108 of the housing 102. The first connection section 134 and the second connection section 138 can be arranged symmetrically with respect to the housing 102. In some examples, the design of the first connection section 134 can be substantially similar to the design of the second connection section 136. In some examples, the size of the first connection section 134 can be substantially similar to the size of the second connection section 136. Now, in conjunction with Figure 2 The first connecting section 134 and the second connecting section 136 are explained in detail.

[0057] Reference Figure 2 Each of the first connection section 134 and the second connection section 136 includes an annular surface 138 that defines a channel 140 that is configured to at least partially receive a corresponding fluid connector 400, 800 of the first fluid connector 400 and the second fluid connector 800 therein (see Figure 1 ). Further, the channel 140 is arranged to be in fluid communication with the corresponding fluid inlet 126 or fluid outlet 130. The annular surface 138 includes an annular sealing area 142, which is configured to be in fluid communication with the radial sealing area 410, 810 of the corresponding fluid connector 400, 800 (respectively at Figure 3 and 7 ) engagement. Further, the annular sealing area 142 is disposed proximal to the corresponding fluid inlet 126 or fluid outlet 130. The annular surface 138 includes one or more steps 144, which are axially disposed between the annular sealing area 142 and the annular end member 146. Figure 2 In the illustrated embodiment, the annular surface 138 includes two steps 144. The steps 144 divide the annular surface 138 into three stepped portions of different diameters.

[0058] Further, each of the first connection section 134 and the second connection section 136 includes an annular end member 146 disposed adjacent to the annular surface 138 and disposed distally of the corresponding fluid inlet 126 or fluid outlet 130. The annular end member 146 can be at least partially disposed externally relative to the housing 102 so that in the coupled state of the corresponding fluid connector 400, 800, the annular flange 428, 828 (respectively at Figure 3 and 7 ) at least the second axial surface 432, 832 (respectively at Figure 3 and 7 ) and a plurality of locking elements 438, 838 (respectively in Figure 3 and 7 ) is disposed externally relative to the housing 102. The annular end member 146 includes an axial sealing surface 148 configured to engage with the axial sealing areas 434, 834 (respectively at Figure 3 and 7 ) bonded.

[0059] Further, the annular end member 146 also includes a plurality of cam protrusions 150, which are arranged adjacent to the axial sealing surface 148 and angularly spaced from each other. Each cam protrusion 150 extends radially inward and includes a cam surface 152 facing the annular surface 138. The cam surface 152 defines a tapered profile so that the thickness of each cam protrusion 150 gradually decreases along the periphery of the corresponding cam protrusion 150. The cam protrusions 150 jointly define a diameter D1 therebetween. Further, in the first angular orientation of the corresponding fluid connector 400, 800, the plurality of cam protrusions 150 allow the corresponding fluid connector 400, 800 to be inserted into the annular end member 146 and the annular surface 138. In addition, in the second angular orientation of the corresponding fluid connector 400, 800, each cam protrusion 150 is aligned with a corresponding spiral fin 414, 814 (respectively at Figure 3 and 7 14 and 15. The cam surface 152 of each cam projection 150 is configured to movably engage with the corresponding helical fin 414, 814 of the corresponding fluid connector 400, 800 during rotation of the corresponding fluid connector 400, 800 from the first angular orientation to the second angular orientation to cause the corresponding fluid connector 400, 800 to translate toward the annular surface 138.

[0060] The annular end member 146 also includes a plurality of locking tabs 154 disposed adjacent the axial sealing surface 148 opposite the plurality of cam projections 150. Figure 2 In the illustrated embodiment, the annular end member 146 includes a pair of locking tabs 154 disposed diametrically opposite each other. The locking tabs 154 are coupled to the housing 102 so that the locking tabs 154 can move radially outward and radially inward, respectively, by a small amount during coupling and / or removal of the corresponding fluid connector 400, 800. It should be noted that the locking tabs 154 are coupled to the housing 102 so that each locking tab 154 can be radially deflected to receive the corresponding locking element 438, 838.

[0061] Further, each locking tab 154 defines an opening 156. In the second angular orientation of the corresponding fluid connector 400, 800, each locking tab 154 defines an opening 156, which is configured to at least partially receive a corresponding locking element 438, 838 of a plurality of locking elements 438, 838 of the corresponding fluid connector 400, 800 to rotationally lock the corresponding fluid connector 400, 800 relative to the housing 102. The shape of the opening 156 is substantially rectangular. Alternatively, the opening 156 can include any other shape without any limitation. The opening 156 is implemented as a through opening in this article. Alternatively, the locking tab 154 can define a cavity engaged with the corresponding locking element 438, 838 without any limitation.

[0062] In addition, the annular end member 146 also includes a plurality of axial stops 158 that are angularly spaced apart from one another and are axially disposed between the plurality of cam projections 150 and the annular surface 138. Each axial stop 158 extends radially inwardly. Figure 2 In the illustrated embodiment, the annular end member 146 includes a pair of axial stops 158. The pair of axial stops 158 together define a diameter D2 therebetween. The annular end member 146 also includes a plurality of axial ribs 160, which are angularly spaced from each other. Each axial rib 160 extends axially from a corresponding cam protrusion 150 of a plurality of cam protrusions 150 to a corresponding axial stop 158 of a plurality of axial stops 158. Further, each axial rib 160 extends circumferentially along a portion of the corresponding cam protrusion 150. The cam protrusion 150 and the corresponding axial rib 160 together define a slot 164. In the second angular orientation of the fluid connector 400, 800, the slot 164 receives the corresponding spiral fin 414, 814. Each of the first connection section 134 and the second connection section 136 defines two slots 164.

[0063] The annular end member 146 also includes a plurality of angular cutouts 162 that are angularly spaced from one another. Each angular cutout 162 is angularly disposed between adjacent cam projections 150. The angular cutouts 162 define a length L2. Figure 2 In the illustrated embodiment, the annular end member 146 includes two angular cutouts 162 disposed diametrically opposite one another. In a first angular orientation of the respective fluid connector 400, 800, each angular cutout 162 is angularly aligned with a corresponding spiral fin 414, 814 of the plurality of spiral fins 414, 814 of the respective fluid connector 400, 800 to allow the respective fluid connector 400, 800 to be inserted into the annular end member 146 and the annular surface 138. In addition, in a second angular orientation of the respective fluid connector 400, 800, the plurality of spiral fins 414, 814 are angularly offset from each angular cutout 162.

[0064] like Figure 1 As shown, the present disclosure relates to a fluid connector 400, 800 for a housing 102. Specifically, the inverter assembly 100 includes a first fluid connector 400. The first fluid connector 400 is coupled to the housing 102 and is configured to be in fluid communication with the fluid inlet 126 (see Figure 5 and 6 ). The first fluid connector 400 is configured to supply fluid to the fluid inlet 126. The first fluid connector 400 may be coupled to the housing 102 proximal to the first side 106 of the housing 102. The first fluid connector 400 engages with the first connection section 134 such that the first fluid connector 400 is fluidically coupled to the fluid inlet 126.

[0065] The inverter assembly 100 also includes a second fluid connector 800. The second fluid connector 800 is coupled to the housing 102 and is arranged to be in fluid communication with the fluid outlet 130 (see Figure 5 and 6 ). The second fluid connector 800 is configured to receive fluid from the fluid outlet 130. The second fluid connector 800 can be coupled to the housing 102 proximal to the second side 108 of the housing 102. The second fluid connector 800 engages with the second connection section 136 so that the second fluid connector 800 is fluidically coupled to the fluid outlet 130.

[0066] Each of the first fluid connector 400 and the second fluid connector 800 is a single integral component. The first fluid connector 400 and the second fluid connector 800 can be made of metal or plastic. In some examples, the material of the first fluid connector 400 and the second fluid connector 800 can be similar to the material of the housing 102. Further, when the first fluid connector 400 and the second fluid connector 800 are made of plastic, the first fluid connector 400 and the second fluid connector 800 can be made by an injection molding process, or when the first fluid connector 400 and the second fluid connector 800 are made of metal, the first fluid connector 400 and the second fluid connector 800 can be made by a die casting process.

[0067] Reference Figure 3 and 4 The first fluid connector 400 includes a tubular body 402, which is disposed along a longitudinal axis X-X1 at a first end 404 and a second end 406 (at Figure 3 ) and includes an outer surface 408. The tubular body 402 may include a circular cross-section. Further, the outer surface 408 includes a radial sealing area 410, which is disposed proximal to the first end 404 of the tubular body 402 and is configured to be aligned with the housing 102 (see FIG. 1 ) relative to the longitudinal axis X-X1. Figure 1 ) radially engage. The tubular body 402 also includes an annular step 412, which is axially disposed between the radial sealing area 410 and the plurality of spiral fins 414. The tubular body 402 also includes an annular body groove 416 located at the first end 404. The annular body groove 416 can be configured to receive a first seal 417 (at Figure 3 The first seal 417 may include an O-ring without limitation.

[0068] The first fluid connector 400 also includes a plurality of spiral fins 414 extending from the outer surface 408 of the tubular body 402. The spiral fins 414 are angularly spaced from each other and are axially disposed between the radial sealing area 410 and the second end 406 of the tubular body 402 relative to the longitudinal axis X-X1. Each spiral fin 414 extends spirally toward the radial sealing area 410 along the longitudinal axis X-X1. Figure 3 and 4 In the illustrated embodiment, the plurality of spiral fins 414 include two spiral fins 414. It is contemplated that the first fluid connector 400 may include more than two spiral fins or a single spiral fin without limitation. A pair of spiral fins 414 together define a diameter D3 (at Figure 4 ), so that the diameter D3 is smaller than a pair of axial stops 158 (see Figure 2 ) defines the diameter D2 (see Figure 2 ). Thus, the axial stopper 158 can be used as a limit stopper to limit the spiral fin 414 of the first fluid connector 400 from moving in the first connection section 134 (see FIG. 1 ) during the coupling of the first fluid connector 400 to the housing 102. Figure 1 and 2 ) along the longitudinal axis X-X1. Further, in some examples, each angle cut 162 (see Figure 2 ) The length L2 (see Figure 2 ) is substantially equal to the length L3 of each spiral fin 414, so that the angled cutout 162 can allow the corresponding spiral fin 414 to be received therein.

[0069] The spiral fins 414 are arranged diametrically opposite to each other. Each of the two spiral fins 414 includes an angular range A1 of 90 degrees around the longitudinal axis X-X1 (at Figure 3 Each spiral fin 414 has a first portion 418 (shown in Figure 3 ) and a second portion 420 extending at an angle from the first portion 418 (shown in Figure 3 ).

[0070] Further, the first fluid connector 400 includes a plurality of extensions 422 (one of which is Figure 3 4, the first fluid connector 400 includes two extensions 422. Each extension 422 extends from the first portion 418 of the corresponding spiral fin 414. Further, each spiral fin 414 defines an outer axial surface 424 (at Figure 3 426, so that the extension 422 extends from the inner axial surface 426 of the spiral fin. The inner axial surface 426 faces the radial sealing area 410.

[0071] The first fluid connector 400 also includes an annular flange 428 extending from the second end 406 of the tubular body 402. The annular flange 428 defines a diameter D4. The annular flange 428 includes a first axial surface 430 facing the tubular body 402 and a second axial surface 432 opposite the first axial surface 430. The first axial surface 430 includes an axial sealing area 434, which is configured to axially engage with the housing 102 along the longitudinal axis X-X1. The annular flange 428 also includes an annular flange groove 436 surrounding the axial sealing area 434. The annular flange groove 436 is configured to receive a second seal 437 (at Figure 3The second seal 437 may include an O-ring without limitation. The outer axial surface 424 of each spiral fin 414 faces the axial sealing area 434.

[0072] Further, the first fluid connector 400 includes a plurality of locking elements 438 disposed adjacent to the annular flange 428 opposite (opposite) the tubular body 402 and angularly spaced apart from each other relative to the longitudinal axis X-X1. In some examples, the locking elements 438 may contact the second axial surface 432 of the annular flange 428. Figure 3 and 4 In the illustrated embodiment of the present invention, the plurality of locking elements 438 include two locking elements 438 spaced angularly apart from each other by 180 degrees. It is contemplated that the first fluid connector 400 may include more than two locking elements or a single locking element without limitation. The pair of locking elements 438 collectively define a diameter D5 that is greater than the diameter D4 defined by the annular flange 428. In addition, each of the diameters D4, D5 is greater than the cam protrusion 150 (see Figure 2 ) defines the diameter D1 (see Figure 2 Each locking element 438 is configured to be at least partially received in a corresponding opening 156 of the housing 102 (see Figure 2 ) to rotationally lock the first fluid connector 400 relative to the housing 102. Further, each locking element 438 includes a tapered end portion 440 configured to be at least partially received in the corresponding opening 156. The tapered end portion 440 is wedge-shaped and is defined by a chamfer 442 provided on the corresponding locking element 438.

[0073] The first fluid connector 400 also includes a tubular coupling portion 444 in fluid communication with the tubular body 402. The tubular coupling portion 444 includes a circular cross-section. One end 446 of the tubular coupling portion 444 can be connected to the tubular body 402. Further, the other end 448 of the tubular coupling portion 444 (at Figure 4 ) can be connected to the first fluid conduit 128 (see Figure 1 The tubular connector 444 may be in the shape of an elbow. The tubular connector 444 and the tubular body 402 may together define a hollow passage 450 (in Figure 4 ), for fluid to flow therethrough. The tubular coupling portion 444 may be integral or connected to the tubular body 402 at the second end 406 of the tubular body 402. Figure 3 and 4In the illustrated embodiment, the tubular coupling portion 444 is integral with the tubular body 402. More specifically, the end 446 of the tubular coupling portion 444 is integral with the second end 406 of the tubular body 402. The tubular coupling portion 444 extends from the annular flange 428 and is configured to couple to the first fluid conduit 128 (at Figure 1 The first fluid connector 400 further includes an annular protrusion 452 (shown in FIG. Figure 3 ), the annular protrusion extends radially from the tubular coupling portion 444 adjacent the annular flange 428. Each locking element 438 extends radially from the annular protrusion 452.

[0074] The first fluid connector 400 may be oriented at a first angle (at Figure 5 ) and a second angle orientation (shown in Figure 6 In the first angular orientation and the second angular orientation of the first fluid connector 400, the second axial surface 432 of the annular flange 428 and the plurality of locking elements 438 of the first fluid connector 400 are disposed externally relative to the housing 102. Specifically, since the diameters D4 and D5 are greater than the diameter D1 defined by the cam protrusion 150, the cam protrusion 150 will not allow the annular flange 428 or the locking elements 438 to be inserted into the passage 140 (see Figure 2 ).

[0075] Reference Figure 5 In the first angular orientation of the first fluid connector 400 relative to the housing 102, the tubular body 402 is configured to be at least partially inserted into the housing 102, and the first fluid connector 400 can be rotated relative to the housing 102. In the first angular orientation of the first fluid connector 400, each angular cutout 162 receives a corresponding helical fin 414. Further, in the first angular orientation of the first fluid connector 400, the helical fin 414 is in contact with each cam protrusion 150 (see Figure 2 ) are misaligned so that the first fluid connector 400 can be inserted into the annular end member 146 and the annular surface 138. In addition, in the first angular orientation, the inner axial surface 426 of each helical fin 414 can be disposed proximal to the corresponding axial stop 158 of the pair of axial stops 158. It should be noted that the first fluid connector 400 can be inserted into the housing 102 until the first fluid connector 400 engages with the axial stop 158. More specifically, since the diameter D3 defined by the helical fin 414 is greater than the diameter D2 defined by the pair of axial stops 158, the axial stop 158 can act as an axial limit stop to limit further insertion of the first fluid connector 400 into the first connection section 134.

[0076] In order to couple the first fluid connector 400 to the housing 102, the first fluid connector 400 can be rotated in a counterclockwise direction C1 to move the first fluid connector 400 from the first angle orientation to the second angle orientation. The first fluid connector 400 can be rotated based on the grip of the tubular coupling portion 444 by a person or an automated machine. In one example, the first fluid connector 400 can be rotated at a predetermined angle A2 (at Figure 2 ) is rotated from a first angle orientation to a second angle orientation. In some embodiments, the predetermined angle A2 can be 90 degrees. Further, during the rotation of the first fluid connector 400 from the first angle orientation to the second angle orientation, the spiral fin 414 can movably engage the housing 102, so that the rotation of the first fluid connector 400 causes the first fluid connector 400 to translate along the longitudinal axis X-X1 into the housing 102 accordingly. It should be noted that during the rotation of the first fluid connector 400 from the first angle orientation to the second angle orientation, the cam protrusion 150 can provide a guiding feature to enable the first fluid connector 400 to be properly assembled.

[0077] Furthermore, the first fluid connector 400 can be rotated in the counterclockwise direction C1 within the housing 102 until each helical fin 414 engages with a corresponding axial rib 160 (see FIG. Figure 2 ). The axial rib 160 can limit any further rotational movement of the first fluid connector 400, thereby indicating that the first fluid connector 400 is in the second angular orientation. The design of the first fluid connector 400 and the housing 102 can eliminate incorrect assembly or rotation of the first fluid connector 400. Specifically, the axial rib 160 can act as a rotation limit stop to prevent incorrect rotation and / or assembly of the first fluid connector 400. For example, the axial rib 160 can prevent the first fluid connector 400 from rotating in the clockwise direction C2.

[0078] Reference Figure 6 , when the first fluid connector 400 is at a predetermined angle A2 (see Figure 2 ) When the spiral fins 414 are rotated from the first angular orientation to the second angular orientation, the spiral fins 414 engage the corresponding cam protrusions 150 of the housing 102 to axially fix the first fluid connector 400 to the housing 102 relative to the longitudinal axis X-X1. Specifically, the outer axial surface 424 (see Figure 3 ) can engage with the corresponding cam surface 152 of the pair of cam surfaces 152. Further, in the second angular orientation of the first fluid connector 400, each spiral fin 414 is received in the corresponding slot 164 of the pair of slots 164. In addition, in the second angular orientation of the first fluid connector 400, the plurality of spiral fins 414 are angularly offset from each angular cutout 162 (see Figure 2). Such a feature can eliminate accidental removal of the first fluid connector 400.

[0079] Further, in the second angular orientation, the radial sealing area 410 radially engages the housing 102. Specifically, the radial sealing area 410 can engage the annular sealing area 142 of the housing 102. In addition, in the second angular orientation, the axial sealing area 434 axially engages the housing 102. Specifically, the axial sealing area 434 can engage the axial sealing surface 148 of the housing 102. In addition, in the second angular orientation, each locking element 438 is at least partially received in the corresponding opening 156 to rotationally lock the first fluid connector 400 relative to the housing 102. Specifically, when the first fluid connector 400 moves from the first angular orientation to the second angular orientation, the locking element 438 can move radially outward to receive the tapered end 440 of the locking element 438 in the corresponding opening 156 of the locking tab 154. Once the tapered end 440 is received in the corresponding opening 156, the locking element 438 can move radially inward to return to its original position.

[0080] Therefore, the present disclosure provides a double locking system for the first fluid connector 400. Specifically, the spiral fin 414 engaged with the cam protrusion 150 provides a first locking feature, and the locking element 438 engaged with the locking tab 154 provides a second locking feature. This double locking system can eliminate the accidental removal of the first fluid connector 400 when the inverter assembly 100 is in use. Further, the double locking system can axially and rotationally lock the first fluid connector 400 in the housing 102 and prevent any undesirable movement of the first fluid connector 400 relative to the housing 102 during use.

[0081] In addition, when the first fluid connector 400 is to be removed from the housing 102, the locking element 438 can first be disengaged from the corresponding locking tab 154 by moving the locking tab 154 radially outward. Then, the first fluid connector 400 can be grasped and rotated in the clockwise direction C2 to move the first fluid connector 400 from the second angular orientation to the first angular orientation. Once the first fluid connector 400 is in the first angular orientation and the spiral fin 414 is aligned with the corresponding angular cutout 162, the first fluid connector 400 can be removed from the housing 102.

[0082] Reference Figure 7 and 8 The second fluid connector 800 includes a tubular body 802, which is disposed along a longitudinal axis X-X1 at a first end 804 and a second end 806 (at Figure 7) and includes an outer surface 808. The tubular body 802 may include a circular cross-section. Further, the outer surface 808 includes a radial sealing area 810, which is disposed proximal to the first end 804 of the tubular body 802 and is configured to be aligned with the housing 102 (see FIG. 1 ) relative to the longitudinal axis Y-Y1. Figure 1 ) radially engage. The tubular body 802 also includes an annular step 812, which is axially disposed between the radial sealing area 810 and the plurality of spiral fins 814. The tubular body 802 also includes an annular body groove 816 located at the first end 804. The annular body groove 816 can be configured to receive the first seal 817 (at Figure 7 The first seal 817 may include an O-ring without any limitation.

[0083] The second fluid connector 800 also includes a plurality of spiral fins 814 extending from the outer surface 808 of the tubular body 802. The spiral fins 814 are angularly spaced from each other and are axially disposed between the radial sealing area 810 and the second end 806 of the tubular body 802 relative to the longitudinal axis Y-Y1. Each spiral fin 814 extends spirally toward the radial sealing area 810 along the longitudinal axis Y-Y1. Figure 7 and 8 In the illustrated embodiment, the plurality of spiral fins 814 include two spiral fins 814. It is contemplated that the second fluid connector 800 may include more than two spiral fins or a single spiral fin without limitation. A pair of spiral fins 814 together define a diameter D6 (eg, Figure 8 ), so that the diameter D6 is smaller than a pair of axial stops 158 (see Figure 2 ) defines the diameter D2 (see Figure 2 ). Thus, the axial stopper 158 can act as a limit stopper to limit the spiral fin 814 of the second fluid connector 800 from being moved in the second connection section 136 (see Figure 1 and 2 ) along the longitudinal axis Y-Y1. Further, in some examples, each angle cut 162 (see Figure 2 ) The length L2 (see Figure 2 ) is substantially equal to the length L4 of each spiral fin 814, so that the angled cut 162 allows the corresponding spiral fin 814 to be received therein.

[0084] The spiral fins 814 are arranged diametrically opposite to each other. Each of the two spiral fins 814 includes an angular range A3 of 90 degrees around the longitudinal axis Y-Y1 (at Figure 7Each spiral fin 814 has a first portion 818 (as shown in FIG. Figure 7 ) and a second portion 820 extending at an angle from the first portion 818 (in Figure 7 ).

[0085] Further, the second fluid connector 800 includes a plurality of extensions 822 (one of which is located at Figure 7 814 and the second fluid connector 800 are shown in the figure, which corresponds to a plurality of spiral fins 814 and is disposed on the tubular body 802. Each extension 822 extends axially from the corresponding spiral fin 814 to the radial sealing area 810 along the longitudinal axis Y-Y1. Specifically, the second fluid connector 800 includes two extensions 822. Each extension 822 extends from the first portion 818 of the corresponding spiral fin 814. Further, each spiral fin 814 defines an outer axial surface 824 (at Figure 7 826, so that the extension 822 extends from the inner axial surface 826 of the spiral fin 814. The inner axial surface 826 faces the radial sealing area 810.

[0086] The second fluid connector 800 also includes an annular flange 828 extending from the second end 806 of the tubular body 802. The annular flange 828 defines a diameter D7. The annular flange 828 includes a first axial surface 830 facing the tubular body 802 and a second axial surface 832 opposite the first axial surface 830. The first axial surface 830 includes an axial sealing area 834, which is configured to axially engage with the housing 102 along the longitudinal axis Y-Y1. The annular flange 828 also includes an annular flange groove 836 surrounding the axial sealing area 834. The annular flange groove 836 is configured to place the second seal 837 (at Figure 7 The second seal 837 may include an O-ring without any limitation. The outer axial surface 824 of each spiral fin 814 faces the axial sealing area 834.

[0087] Further, the second fluid connector 800 includes a plurality of locking elements 838 disposed adjacent to the annular flange 828 relative to the tubular body 802 and angularly spaced apart from each other relative to the longitudinal axis Y-Y1. In some examples, the locking elements 838 may contact the second axial surface 832 of the annular flange 828. Figure 7 and Figure 8In the illustrated embodiment of the invention, the plurality of locking elements 838 include two locking elements 838 spaced angularly 180 degrees apart from each other. It is contemplated that the second fluid connector 800 may include more than two locking elements or a single locking element without limitation. The pair of locking elements 838 collectively define a diameter D8 that is greater than the diameter D7 defined by the annular flange 828. In addition, the diameters D7 and D8 are greater than the diameter D1 defined by the cam protrusion 150 (see Figure 2 Each locking element 838 is configured to be at least partially received in a corresponding opening 156 of the housing 102 (see Figure 2 ) to rotationally lock the second fluid connector 800 relative to the housing 102. Further, each locking element 838 includes a tapered end portion 840 configured to be at least partially received in the corresponding opening 156. The tapered end portion 840 is wedge-shaped and is formed by a chamfer 842 (at Figure 7 ) limitation shown in .

[0088] The second fluid connector 800 also includes a tubular coupling portion 844 in fluid communication with the tubular body 802. In some examples, the length of the tubular coupling portion 844 may be greater than Figure 3 and 4 The length of the tubular connector 444 shown in FIG. The tubular connector 844 includes a circular cross-section. One end 846 of the tubular connector 844 can be connected to the tubular body 802. Further, the other end 848 of the tubular connector 844 (at Figure 8 ) can be connected to the second fluid conduit 132 (see Figure 1 ) connection. The tubular connector 844 may be in the shape of an elbow. The tubular connector 844 and the tubular body 802 may together define a hollow passage 850 (in Figure 7 ), for fluid to flow therethrough. The tubular connector 844 may be integral or connected to the tubular body 802 at the second end 806 of the tubular body 802. Figure 7 and 8 In the illustrated embodiment, the tubular coupling portion 844 is integral with the tubular body 802. More specifically, the end 846 of the tubular coupling portion 844 is integral with the second end 806 of the tubular body 802. The tubular coupling portion 844 extends from the annular flange 828 and is configured to couple to the second fluid conduit 132 (at Figure 1 The second fluid connector 800 further includes an annular protrusion 852 (shown in FIG. Figure 7 ), the annular protrusion extends radially from the tubular coupling portion 844 adjacent the annular flange 828. Each locking element 838 extends radially from the annular protrusion 852.

[0089] Further, the second fluid connector 800 can be oriented at a first angle (at Fig. 9 ) and a second angle orientation (shown in Fig.10 In the first and second angular orientations of the second fluid connector 800, the second axial surface 832 of the annular flange 828 and the plurality of locking elements 838 of the second fluid connector 800 are disposed externally relative to the housing 102. Specifically, since the diameters D and D8 are greater than the diameter D1 defined by the cam protrusion 150 (see Figure 2 ), so that the cam protrusion 150 will not allow the annular flange 828 or the locking element 838 to be inserted into the channel 140 (see Figure 2 ).

[0090] Reference Fig. 9 In the first angular orientation of the second fluid connector 800 relative to the housing 102, the tubular body 802 is configured to be at least partially inserted into the housing 102, and the second fluid connector 800 can be rotated relative to the housing 102. In the first angular orientation of the second fluid connector 800, each angular cutout 162 receives a corresponding helical fin 814. Further, in the first angular orientation of the second fluid connector 800, the helical fin 814 is aligned with each cam protrusion 150 (see Figure 2 ) are misaligned so that the second fluid connector 800 can be inserted into the annular end member 146 and the annular surface 138. In addition, in the first angular orientation, the inner axial surface 826 of each helical fin 814 can be disposed proximal to the corresponding axial stop 158 of the pair of axial stops 158. It should be noted that the second fluid connector 800 can be inserted into the housing 102 until the second fluid connector 800 engages with the axial stop 158. More specifically, since the diameter D6 defined by the helical fin 814 is smaller than the diameter D2 defined by the pair of axial stops 158, the axial stop 158 can act as an axial limit stop to limit further insertion of the second fluid connector 800 into the second connection section 136.

[0091] In order to couple the second fluid connector 800 to the housing 102, the second fluid connector 800 can be rotated in a counterclockwise direction C1 to move the second fluid connector 800 from the first angle orientation to the second angle orientation. The second fluid connector 800 can be rotated based on the grip of the tubular coupling portion 844 by a person or an automated machine. In one example, the second fluid connector 800 can be rotated at a predetermined angle A4 (in Figure 2 ) is rotated from a first angle orientation to a second angle orientation. In some embodiments, the predetermined angle A4 can be 90 degrees. It should be noted that during the second fluid connector 800 is rotated from the first angle orientation to the second angle orientation, the cam protrusion 150 can provide a guiding feature to enable the second fluid connector 800 to be properly assembled.

[0092] Furthermore, the second fluid connector 800 can be rotated in the counterclockwise direction C1 within the housing 102 until each helical fin 814 engages with a corresponding axial rib 160 (see FIG. Figure 2 ). The axial rib 160 can limit any further rotational movement of the second fluid connector 800, thereby indicating that the second fluid connector 800 is in the second angular orientation. The design of the second fluid connector 800 and the housing 102 can eliminate incorrect assembly or rotation of the second fluid connector 800. Specifically, the axial rib 160 can act as a rotation limit stop to prevent incorrect rotation and / or assembly of the second fluid connector 800. For example, the axial rib 160 can prevent the second fluid connector 800 from rotating in the clockwise direction C2.

[0093] See also Fig.10 , when the second fluid connector 800 is at a predetermined angle A4 (see Figure 2 ) When the spiral fin 814 is rotated from the first angular orientation to the second angular orientation, the spiral fin 814 engages the corresponding cam protrusion 150 of the housing 102 to axially fix the second fluid connector 800 to the housing 102 relative to the longitudinal axis Y-Y1. Specifically, the outer axial surface 824 (see Figure 7 ) can engage with a corresponding cam surface 152 of the pair of cam surfaces 152. Further, in the second angular orientation of the second fluid connector 800, each spiral fin 814 is received in a corresponding slot 164 of the pair of slots 164. In addition, during the rotation of the second fluid connector 800 from the first angular orientation to the second angular orientation, the cam surface 152 of each cam protrusion 150 is configured to movably engage with a corresponding spiral fin 814 of the second fluid connector 800 to translate the second fluid connector 800 toward the annular surface 138. In addition, in the second angular orientation of the second fluid connector 800, the plurality of spiral fins 814 are angularly offset from each angular cutout 162 (see Figure 2 ). Such a feature can eliminate accidental removal of the second fluid connector 800.

[0094] Further, in the second angular orientation, the radial sealing area 810 radially engages the housing 102. Specifically, the radial sealing area 810 can engage the annular sealing area 142 of the housing 102. In addition, in the second angular orientation, the axial sealing area 834 axially engages the housing 102. Specifically, the axial sealing area 834 can engage the axial sealing surface 148 of the housing 102. In addition, in the second angular orientation, each locking element 838 is at least partially received in the corresponding opening 156 to rotationally lock the second fluid connector 800 relative to the housing 102. Specifically, when the second fluid connector 800 moves from the first angular orientation to the second angular orientation, the locking element 838 can move radially outward to receive the tapered end 840 of the locking element 838 in the corresponding opening 156 of the locking tab 154. Once the tapered end 840 is received in the corresponding opening 156, the locking element 838 can move radially inward to return to its original position.

[0095] Therefore, the present disclosure provides a double locking system for the second fluid connector 800. Specifically, the spiral fin 814 engaged with the cam protrusion 150 provides a first locking feature, while the locking element 838 locked with the locking tab 154 provides a second locking feature. This double locking system can eliminate the accidental removal of the second fluid connector 800 when the inverter assembly 100 is in use. Further, the double locking system can axially and rotationally lock the second fluid connector 800 in the housing 102 and prevent any undesirable movement of the second fluid connector 800 relative to the housing 102 during use.

[0096] In addition, when the second fluid connector 800 is to be removed from the housing 102, the locking element 838 can be first disengaged from the corresponding locking tab 154 by moving the locking tab 154 radially outward. Then, the second fluid connector 800 can be grasped and rotated in the clockwise direction C2 to move it from the second angular orientation to the first angular orientation. Once the second fluid connector 800 is in the first angular orientation and the spiral fin 814 is aligned with the corresponding angular cutout 162, the second fluid connector 800 can be removed from the housing 102.

[0097] Thus, the present disclosure describes an improved design of an inverter assembly 100 that can be simple and compact in construction. Further, the inverter assembly 100 described herein can be cost-effective and lightweight. The teachings of the present disclosure can improve the efficiency of manufacturing the inverter assembly 100, and can also improve the manufacturability of the inverter assembly 100. Further, the first fluid connector 400 and the second fluid connector 800 can reduce or eliminate many additional components required for conventional connection techniques, such as mechanical fasteners, thereby reducing the time required for assembly and disassembly of the inverter assembly 100. In addition, the first fluid connector 400 and the second fluid connector 800 can be assembled or disassembled without the need for additional tools.

[0098] The first and second fluid connectors 400, 800 described herein provide axial and radial seals, thereby providing a leak-proof connection between the housing 102 and the respective first and second fluid connectors 400, 800. In addition, standard O-rings may be used to seal the respective first and second fluid connectors 400, 800 to the housing 102. Further, the first and second fluid connectors 400, 800 may be implemented as cost-effective injection molded parts, thereby reducing manufacturing costs associated with the inverter assembly 100.

[0099] Therefore, the inverter assembly 100 provided by the present invention can reduce or eliminate the number of separate components, can reduce assembly time and disassembly time, can save costs, and can improve the manufacturing efficiency of the inverter assembly 100.

[0100] One aspect of the present disclosure provides a fluid connector for a housing, comprising a tubular body, a plurality of spiral fins, and an annular flange. The fluid connector comprises a plurality of locking elements, which are at least partially received in corresponding openings of the housing. Further, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be at least partially inserted into the housing, and the fluid connector is rotatable relative to the housing. In addition, during the rotation of the fluid connector from the first angular orientation to the second angular orientation, the spiral fins are movably engaged with the housing, so that the rotation of the fluid connector causes the corresponding translation of the fluid connector into the housing.

[0101] The various embodiments described above can be used independently of each other and can be combined with each other in various ways. The reference numerals used in the detailed description and in the claims do not limit the description of the embodiments nor the claims. The reference numerals are used for clarification only.

[0102] In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor, element or other unit may fulfill the functions of several items recited in the claims. The fact that certain measures are described in mutually different dependent claims does not mean that a combination of these measures cannot be used to good effect.

[0103] In the present disclosure, the expression "at least one of A, B and C" means "A, B and / or C", and for example it is sufficient if only B is present. A single element or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not mean that a combination of these measures cannot be used to advantage.

[0104] Any reference signs in the claims should not be construed as limiting the scope.

[0105] Although the invention has been described herein with reference to the drawings and embodiments, these do not limit the scope of the invention which is defined by the claims. A skilled person having benefit of this disclosure will appreciate that many variations, combinations and extensions are possible within the scope described.

[0106] legend

[0107] 100 Inverter Components

[0108] 102 Housing

[0109] 104 Cooling channels

[0110] 106 First side

[0111] 108 Second side

[0112] 110 Main surface

[0113] 112 first side surface

[0114] 114 second side surface

[0115] 116 bottom surface

[0116] 118 First protrusion

[0117] 120 Second protrusion

[0118] 122 fins

[0119] 124 Mounting bracket

[0120] 126 Fluid inlet

[0121] 128 first fluid conduit

[0122] 130 Fluid outlet

[0123] 132 second fluid conduit

[0124] 134 First connection section

[0125] 136 Second connection section

[0126] 138 Annular surface

[0127] 140 channels

[0128] 142 Annular sealing area

[0129] 144 steps

[0130] 146 Annular end member

[0131] 148 Axial sealing surface

[0132] 150 Cam protrusion

[0133] 152 Cam surface

[0134] 154 Locking tab

[0135] 156 Opening

[0136] 158 Axial stop

[0137] 160 Axial rib

[0138] 162 Angle cut

[0139] 164 Slot

[0140] 400 First Fluid Connector

[0141] 402 Tubular body

[0142] 404 First End

[0143] 406 Second End

[0144] 408 External surface

[0145] 410 Radial sealing area

[0146] 412 Circular Stairs

[0147] 414 Spiral Fin

[0148] 416 Annular body groove

[0149] 417 first sealing member

[0150] 418 Part 1

[0151] 420 Part 2

[0152] 422 Extension

[0153] 424 Outer axial surface

[0154] 426 Inner axial surface

[0155] 428 Annular flange

[0156] 430 First axial surface

[0157] 432 Second axial surface

[0158] 434 Axial sealing area

[0159] 436 Annular flange groove

[0160] 437 second sealing member

[0161] 438 Locking element

[0162] 440 Tapered end section

[0163] 442 Chamfer

[0164] 444 Tubular connection

[0165] 446 end

[0166] 448 end

[0167] 450 Hollow Channel

[0168] 452 Annular protrusion

[0169] 800 Second Fluid Connector

[0170] 802 Tubular body

[0171] 804 First End

[0172] 806 Second End

[0173] 808 External surface

[0174] 810 Radial sealing area

[0175] 812 Circular Stairs

[0176] 814 Spiral Fin

[0177] 816 Annular body groove

[0178] 817 first sealing member

[0179] 818 Part 1

[0180] 820 Part 2

[0181] 822 Extension

[0182] 824 Outer axial surface

[0183] 826 Inner axial surface

[0184] 828 Annular flange

[0185] 830 First axial surface

[0186] 832 Second axial surface

[0187] 834 Axial sealing area

[0188] 836 Annular flange groove

[0189] 837 second sealing member

[0190] 838 Locking element

[0191] 840 Tapered end section

[0192] 842 Chamfer

[0193] 844 Tubular connection

[0194] 846 end

[0195] 848 end

[0196] 850 Hollow Channel

[0197] 852 Annular protrusion

[0198] L1 Shell length

[0199] W1 Shell width

[0200] A1 Angle Range

[0201] A2 Predetermined Angle

[0202] A3 Angle range

[0203] A4 Predetermined angle

[0204] X-X1 longitudinal axis

[0205] Y-Y1 longitudinal axis

[0206] L2 Length defined by the angle cut

[0207] L3 Length defined by the spiral fin

[0208] L4 Length defined by the spiral fin

[0209] D1 Cam protrusion diameter

[0210] D2 Diameter of the axial stop

[0211] D3 Diameter defined by the spiral fins

[0212] D4 Diameter of the annular flange

[0213] D5 Diameter of the locking element

[0214] D6 Diameter defined by the spiral fins

[0215] D7 Diameter of the annular flange

[0216] D8 Diameter of locking element

[0217] C1 Counterclockwise

[0218] C2 Clockwise

Claims

1. A fluid connector for a housing, the fluid connector comprising: a tubular body extending along a longitudinal axis between a first end and a second end and including an outer surface including a radial sealing region disposed proximal to the first end of the tubular body and configured to radially engage the housing relative to the longitudinal axis; a plurality of helical fins extending from an outer surface of the tubular body, wherein the helical fins are angularly spaced from one another and are disposed axially relative to the longitudinal axis between the radial seal region and the second end of the tubular body, each helical fin extending helically along the longitudinal axis toward the radial seal region; an annular flange extending from the second end of the tubular body, the annular flange including a first axial surface facing the tubular body and a second axial surface opposite the first axial surface, wherein the first axial surface includes an axial sealing area configured to axially engage the housing along the longitudinal axis; and a plurality of locking elements disposed adjacent the annular flange opposite the tubular body and angularly spaced from one another relative to the longitudinal axis, wherein each locking element is configured to be at least partially received in a corresponding opening of the housing to rotationally lock the fluid connector relative to the housing, wherein, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be at least partially inserted into the housing and the fluid connector is rotatable relative to the housing; wherein, when the fluid connector is rotated relative to the housing at a predetermined angle from the first angular orientation to the second angular orientation, the spiral fin engages a corresponding cam projection of the housing to axially secure the fluid connector to the housing relative to the longitudinal axis, the radial sealing area radially engages the housing, the axial sealing area axially engages the housing, and each locking element is at least partially received in a corresponding opening to rotationally lock the fluid connector relative to the housing; and wherein the helical fin movably engages the housing during rotation of the fluid connector from the first angular orientation to the second angular orientation such that rotation of the fluid connector causes corresponding translation of the fluid connector along the longitudinal axis into the housing.

2. The fluid connector according to claim 1, characterized in that The predetermined angle is 90 degrees.

3. The fluid connector according to claim 1 or 2, characterized in that: Also included is a plurality of extensions corresponding to the plurality of spiral fins and disposed on the tubular body, wherein each extension extends axially from a corresponding spiral fin along the longitudinal axis toward the radial sealing area.

4. A fluid connector according to any one of the preceding claims, characterized in that The tubular body further includes an annular step disposed axially between the radial seal region and the plurality of spiral fins.

5. A fluid connector according to any one of the preceding claims, characterised in that Also included is a tubular coupling portion that is configured to be in fluid communication with the tubular body, wherein the tubular coupling portion is integral with the tubular body or connected to the tubular body at a second end of the tubular body, and wherein the tubular coupling portion extends from the annular flange and is configured to be coupled to a fluid conduit.

6. The fluid connector according to claim 5, characterized in that Also included is an annular protrusion extending radially from the tubular coupling portion adjacent the annular flange, wherein each locking element extends radially from the annular protrusion.

7. The fluid connector according to claim 5 or 6, characterized in that: The tubular connecting portion is in an elbow shape.

8. A fluid connector according to any one of the preceding claims, characterized in that The tubular body also includes an annular body groove at the first end, wherein the annular body groove is configured to receive a first sealing member therein.

9. A fluid connector according to any one of the preceding claims, characterized in that The annular flange also includes an annular flange groove surrounding the axial sealing area, wherein the annular flange groove is configured to receive a second sealing member therein.

10. A fluid connector according to any one of the preceding claims, characterised in that The plurality of helical fins includes two helical fins, each of the two helical fins including an angular extent of 90 degrees about the longitudinal axis.

11. A fluid connector according to any one of the preceding claims, characterised in that Each locking element includes a tapered end portion configured to be at least partially received in a corresponding opening.

12. A fluid connector according to any one of the preceding claims, characterised in that The plurality of locking elements include two locking elements spaced apart from each other at an angle of 180 degrees.

13. An inverter assembly, comprising: a housing comprising a cooling passage, a fluid inlet disposed in fluid communication with the cooling passage, and a fluid outlet disposed in fluid communication with the cooling passage; A first fluid connector as claimed in any one of the preceding claims, wherein the first fluid connector is coupled to the housing and is arranged in fluid communication with the fluid inlet, wherein the first fluid connector is configured to supply fluid to the fluid inlet; and A second fluid connector as claimed in any one of the preceding claims, wherein the second fluid connector is coupled to the housing and is arranged in fluid communication with the fluid outlet, wherein the second fluid connector is configured to receive fluid from the fluid outlet.

14. The inverter assembly according to claim 13, characterized in that: The housing includes a first connection section configured to couple with the first fluid connector and a second connection section configured to couple with the second fluid connector, each of the first connection section and the second connection section including: an annular surface defining a passage configured to at least partially receive a corresponding fluid connector of the first and second fluid connectors, the annular surface including an annular sealing area configured to engage a radial sealing area of ​​the corresponding fluid connector, wherein the passage is disposed in fluid communication with a corresponding fluid inlet or fluid outlet, and wherein the annular sealing area is disposed proximal to the corresponding fluid inlet or fluid outlet; and an annular end member disposed adjacent the annular surface and distal to the respective fluid inlet or fluid outlet, the annular end member comprising: an axial sealing surface configured to engage the axial sealing area of ​​a corresponding fluid connector; a plurality of cam projections disposed adjacent the axial sealing surface and angularly spaced from one another, each cam projection extending radially inwardly and including a cam surface facing the annular surface, wherein, in the first angular orientation of the corresponding fluid connector, the plurality of cam projections permit the corresponding fluid connector to be inserted into the annular end member and the annular surface, wherein, in the second angular orientation of the corresponding fluid connector, each cam projection engages a respective helical fin of a plurality of helical fins of the corresponding fluid connector to axially secure the corresponding fluid connector to the housing, and wherein, during rotation of the corresponding fluid connector from the first angular orientation to the second angular orientation, the cam surface of each cam projection is configured to movably engage a respective helical fin of the corresponding fluid connector to translate the corresponding fluid connector toward the annular surface; and A plurality of locking tabs are disposed adjacent to the axial sealing surface relative to the plurality of cam protrusions, wherein, in the second angular orientation of the corresponding fluid connector, each locking tab defines an opening configured to at least partially receive a corresponding locking element of the plurality of locking elements of the corresponding fluid connector to rotationally lock the corresponding fluid connector relative to the housing.

15. The inverter assembly according to claim 14, characterized in that: The annular surface includes one or more steps disposed axially between the annular sealing area and the annular end member.

16. The inverter assembly according to claim 14 or 15, characterized in that: The annular end member further includes a plurality of axial stops angularly spaced from one another and disposed axially between the plurality of cam projections and the annular surface, and wherein each axial stop extends radially inwardly.

17. The inverter assembly according to claim 16, characterized in that: The annular end member further includes a plurality of axial ribs angularly spaced apart from one another, each axial rib extending axially from a corresponding cam projection of the plurality of cam projections to a corresponding axial stop of the plurality of axial stops.

18. The inverter assembly according to any one of claims 14 to 17, characterized in that The annular end member is at least partially arranged outside relative to the housing, so that in the connected state of the corresponding fluid connector, at least the second axial surface of the annular flange and the plurality of locking elements of the corresponding fluid connector are arranged outside relative to the housing.

19. The inverter assembly according to any one of claims 14 to 17, characterized in that The annular end member also includes a plurality of angular cuts angularly spaced apart from one another, each angular cut being angularly disposed between adjacent cam protrusions, wherein, in the first angular orientation of the corresponding fluid connector, each angular cut is angularly aligned with a corresponding helical fin of the plurality of helical fins of the corresponding fluid connector to allow the corresponding fluid connector to be inserted into the annular end member and the annular surface, and wherein, in the second angular orientation of the corresponding fluid connector, the plurality of helical fins are angularly offset from each angular cut.

20. The inverter assembly according to any one of claims 13 to 19, characterized in that: Each of the first fluid connector and the second fluid connector is a single unitary component.

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