Field of the invention:
[0001] The present invention relates to a mounting assembly of a pump module to a tank in an exhaust treatment system for a vehicle.
Background of the invention:
[0002] According to a prior art 6346/CHE/2015, an assembly with improved system for attaching a component to a container is provided. It is proposed an assembly comprising a plastic container and a component attached to the container by means of an attachment system, the container having a circular attachment portion. The attachment system comprises: a ring shaped member comprising a top flange, a bottom flange and a frusto-conical side wall connecting the top flange and the bottom flange, the bottom flange and a portion of the frusto-conical side wall being embedded in the attachment portion, the ring shaped member further comprising peripheral tabs a plurality of engaging claw parts, each engaging claw part being configured to engage a peripheral tab and to press the component against the attachment portion.
Brief description of the accompanying drawings:
[0003] An embodiment of the disclosure is described with reference to the
following accompanying drawings,
[0004] Fig. 1 illustrates an exploded view of a mounting assembly for a supply
module to a tank, according to an embodiment of the present invention;
[0005] Fig. 2 illustrates the mounting assembly, according to an embodiment of the
present invention;
[0006] Fig. 3 illustrates a first radial sealing ring for the mounting assembly,
according to an embodiment of the present invention;
[0007] Fig. 4 illustrates a second radial sealing ring for the mounting assembly,
according to an embodiment of the present invention, and
[0008] Fig. 5 illustrates a third radial sealing ring for the mounting assembly,
according to an embodiment of the present invention.

Detailed description of the embodiments:
[0009] Fig. 1 illustrates an exploded view of a mounting assembly for a supply module to a tank, according to an embodiment of the present invention. The mounting assembly 110 of the supply module 120 to the tank 102 is disclosed for an exhaust treatment system (Selective Catalytic Reduction (SCR) system) in a vehicle. The mounting assembly 110 comprises an interface member 104 integrated to an opening of the tank 102 at one end. The interface member 104 comprises a first flange 106, from the other end, with plurality of first lock members 108 protruding out the first flange 106, and forms a first interface. Further, a circular flange 114 is integrated to the supply module 120 at one end. The circular flange 114 comprises plurality of second lock member 116 projecting out from a second end of the circular flange 114, and forms a second interface. The second interface is rotationally engaged with the first interface to mount and dismount the supply module 120 with the tank 102. Also, an axial sealing ring 302 (shown in Fig. 3) is placed between the interface member 104 and the circular flange 114. The mounting assembly 110 is characterized by, the supply module 120 mounted to a bottom surface of the tank 102, which faces a ground surface.
[0010] The second interface is inserted inside the tank 102 and then rotated in a first direction about the first interface till the plurality of first lock member 108 and the plurality of second lock member 116 come to a locking state. To dismount, the supply module 120 is rotated in opposite direction to that of the first direction till the plurality of first lock members 108 and the plurality of second lock members 116 are in unlock state. In accordance to an embodiment of the present invention, the interface member 104 comprises a cylindrical profile.
[0011] Fig. 2 illustrates the mounting assembly, according to an embodiment of the present invention. The first interface and the second interface are shown in assembled state. Further, the plurality of first lock members 108 and the plurality of second lock members 116 are selected from a group comprising a tab and a clamp. In one embodiment, the plurality of first lock members 108 comprises tabs and the

plurality of second lock members 116 comprises clamps. The clamps are in the form of claws folded towards the mounting surface of the tank 102, as shown in the Fig. 1. In another embodiment (not shown in figures), the plurality of first lock members 108 comprises clamps and the plurality of second lock members 116 comprises tabs. The clamps are in the form of claws folded away from the mounting surface of the tank 102.
[0012] The plurality of first lock members 108 and the plurality of second lock members 116 are any one of equal and unequal, to each other. With equal number, the supply module 120 is firmly mounted to the tank 102. However, in case of an unequal numbers, the supply module 120 is still mountable to the tank 102.
[0013] Fig. 3 illustrates a first radial sealing ring for the mounting assembly, according to an embodiment of the present invention. The supply module 120 is shown with a block without any internal components, and the same must not be understood in limiting manner. The interface member 104 is over-molded with plastic, forming a first over-molded plastic, and then the first over-molded plastic 112 is blow molded 306 with the tank 102. The end of the interface member 104 integrated to the tank 102 comprises plurality of holes over which the over-molding is performed. The first over-molded plastic 112 is then integrated to the slot in the tank 102 by blow molding.
[0014] Similarly, the circular flange 114 is over-molded with plastic, forming a second over-molded plastic, and then the second over-molded plastic 118 is circumferentially welded 308 to the supply module 120.
[0015] In accordance to an embodiment of the present invention, a first radial sealing ring 304 (or just radial sealing ring) is placed between the supply module 120 and the interface member 104. The radial sealing ring 304 provides additional leakage protection apart from the axial sealing ring 302 existing in the mounting assembly 110. Further, since the mounting assembly 110 is adapted for bottom

mounted configuration, the axial sealing ring 302 is not adequately compressed between the circular flange 114 and the first flange 106. The supply module 120 is suspended on the plurality of first lock members 108 with the help of the plurality of second lock members 116. Therefore, the axial sealing ring 302 is not compressed and rather is loose, when seen in the configuration of the bottom mounted configuration, and allows passage of fluid from the periphery. However, in the case of a top mounted configuration, the same axial sealing ring 302 is adequately compressed, as the supply module 120 is acting on the axial sealing ring 302 due to gravity, and thereby resulting in proper sealing. The radial sealing ring 304 strengthens the leakage protection in addition to the axial sealing ring 302. Further, the sealing groove are formed in the second over-molded plastic 118 for both the axial sealing ring 302 and the radial sealing ring 304. In addition to the radial sealing ring 304, the circumferentially welded 308 junction also assists in leakage protection.
[0016] Fig. 4 illustrates a second radial sealing ring for the mounting assembly, according to an embodiment of the present invention. The description remains same as explained for Fig. 3, however, the second radial sealing ring comprises custom profile based on the requirement. The Fig. 4 illustrates a cross profile for the radial sealing ring 304.
[0017] Fig. 5 illustrates a third radial sealing ring for the mounting assembly, according to an embodiment of the present invention. The description remains same as explained for Fig. 3, however, the third radial sealing ring comprises a twisted coiled spring placed inside an elastomer with a “C” profile.
[0018] In accordance to an embodiment of the present invention, a serviceable interface of supply module 120 for the tank 102 is provided. Cost of parts replacement is reduced in case of internal part failures. The number of sealing is increased thereby by improving proper functioning.

[0019] The second over-molded plastic 118 of circular flange 114 provides a robust construction of the sealing groove of the axial sealing ring 302 and the sealing groove of the radial sealing ring 304. The first over-molded plastic 112 of the interface member 104 provides a robust construction for blow molding 306 with the tank 102. The circumferential welding 308 of the second over-molded plastic 118 with the supply module 120 provides a robust construction of tertiary sealing. The radial sealing ring 304 acts as an radial alignment element of interface member 104 of tank 102 with the supply module 120 during assembly which reduce the fixation process time while replacement of the supply module 120 in case of internal part failures. The radial alignment assist user to avoid mislay of the supply module 120 with the tank 102.
[0020] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.

We claim:
1. A mounting assembly (110) of a supply module (120) to a tank (102) in an
exhaust treatment system for a vehicle, comprising:
an interface member (104) integrated to an opening of said tank (102) at one end, said interface member (104) comprising a first flange (106) with plurality of first lock members (108) protruding out from said first flange (106), forming a first interface; a circular flange (114) integrated to said supply module (120) at one end, said circular flange (114) comprising plurality of second lock members (116) projecting out from said circular flange (114), forming a second interface, said second interface is rotationally engaged with said first interface to mount and dismount said supply module (120) with said tank (102), and
an axial sealing ring (302) placed between said first flange (106) and said circular flange (114), characterized in that
said supply module (120) is mounted to a bottom surface of said tank (102), which faces a ground surface.
2. The mounting assembly (110) as claimed in claim 1, wherein said interface member (104) comprises a cylindrical profile.
3. The mounting assembly (110) as claimed in claim 1, wherein said plurality of first lock members (108) and said plurality of second lock members (116) are selected from a group comprising a tab and a clamp.
4. The mounting assembly (110) as claimed in claim 3, wherein said plurality of first lock members (108) comprises tabs and said plurality of second lock members (116) comprises clamps, wherein said clamps are in the form of claws folded towards said mounting surface of said tank (102).

5. The mounting assembly (110) as claimed in claim 3, wherein said plurality of first lock members (108) comprises clamps and said plurality of second lock members (116) comprises tabs, wherein said clamps are in the form of claws folded away from said mounting surface of said tank (102).
6. The mounting assembly (110) as claimed in claim 1, wherein said plurality of first lock members (108) and said plurality of second lock members (116) are any one of equal and unequal, to each other.
7. The mounting assembly (110) as claimed in claim 1, wherein said interface member (104) is over-molded with plastic, forming a first over-molded plastic, and then said first over-molded plastic (112) is blow molded (306) with said tank (102).
8. The mounting assembly (110) as claimed in claim 1, wherein said circular flange (114) is over-molded with plastic, forming a second over-molded plastic, and then said second over-molded plastic (118) is circumferentially welded (308) to said supply module (120).
9. The mounting assembly (110) as claimed in claim 1, wherein a radial sealing ring 304) is placed between said supply module (120) and said interface member (104).
10. The mounting assembly (110) as claimed in claim 9, wherein said axial sealing ring (302) and said radial sealing ring (304) are selected from a group comprising a non-circular profile ring and a twisted coiled spring placed inside an elastomer.