[0001] The present invention relates to an engine mounting system, and more specifically, to a
rubber mount to significantly reduce noise, vibration and harshness (NVH) that are transferred
from the transmission to a vehicle body.
BACKGROUND
[0002] In conventional engine mounting, a hollow tube shape is used in mounting system, and a
rubber bush is press fitted in the hollow tube with a transmission side bracket. In conventional
systems, there are high vibrations in transmission, and the vibrations are transferred to the vehicle
body through engine mounting which some time creates abnormal noise at higher frequencies.
Also, in conventional systems, the transmission bracket moves along with the rubber inside the
mounting sheet metal bracket.
[0003] Fig. 1 illustrates a conventional engine mounting system 100. The engine mounting system
100 comprises a transmission bracket 102, body side brackets 104, a ring bracket 106, a rubber
bush 108, an auxiliary bracket 112, and an apron side bracket 114. The transmission bracket 102
is press fitted in the middle of the rubber bush 108 which is also press-fitted with mount holder
106.The body side brackets 104 are welded with the ring bracket106, which is also welded with
auxiliary bracket 112 and apron side bracket 114.
[0004] With the conventional system as discussed above, there are high vibrations in transmission
that gets transferred to the vehicle body through engine mounting, thereby causing abnormal noise
in the cabin.
[0005] In view of the above mentioned structural limitations and deficiencies in the solutions
available in state-of-the-art, there is a practical need to devise and provide a solution that eliminates
the aforesaid deficiencies, in the form of an optimal engine mounting solution significantly
reducing the noise, vibration and harshness (NVH) generated thereto and transferred to the
vehicular body.
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SUMMARY
[0006] This summary is provided to introduce concepts related to a rubber mount to mount on a
transmission bracket of a vehicle. The concepts are further described below in the detailed
description. This summary is not intended to identify key features or essential features of the
claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0007] The subject matter disclosed herein relates to a rubber mount that includes a circular
portion and a flange along the circumference at an inner end of the circular portion. The flange is
non-uniform and when the rubber mount is mounted on a transmission bracket, corners of the
flange that are close to body panels have larger radius than corners that are close to a battery tray.
[0008] In an aspect, the portions of the flange other than the corners are formed straight.
[0009] In an aspect, a portion of the flange that is close to the body panels (510) is wider than the
rest of the portions of the flange.
[00010] In an aspect, a portion of the flange that is between the corners and opposite to the
portion is circular.
[00011] In an aspect, when the rubber mount is mounted on the transmission bracket, the rubber
mount houses a rubber bush, and the flange is separated from the rubber bush.
[00012] In an aspect, the rubber bush has a plurality of slots, and a surface of the rubber bush
that is parallel to the flange is not circular.
[00013] In an aspect, the rubber mount includes a body apron side bracket mounted on the
circular portion, wherein, when the rubber mount is mounted on the transmission bracket, a
distance between the corner (R3) and the body apron side bracket is less than a distance between
any of the rest of the corners (R1, R2, R4) and the body apron side bracket.
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[00014] In an aspect, when the rubber mount is mounted on the transmission bracket, a distance
between the corner (R4) and the battery tray is less than a distance between any of the rest of the
corners (R1, R2, R3) and the battery tray.
[00015] In an aspect, the rubber mount is made of metal or plastic.
[00016] In an aspect, the flange is integrated to the circular portion of the rubber mount.
[00017] To further understand the characteristics and technical contents of the present subject
matter, a description relating thereto will be made with reference to the accompanying drawings.
However, the drawings are illustrative only but not used to limit the scope of the present subject
matter.
[00018] Various objects, features, aspects, and advantages of the inventive subject matter will
become more apparent from the following detailed description of preferred embodiments, along
with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[00019] It is to be noted, however, that the appended drawings illustrate only typical
embodiments of the present subject matter and are therefore not to be considered for limiting of
its scope, for the invention may admit to other equally effective embodiments. The detailed
description is described with reference to the accompanying figures. The illustrated embodiments
of the subject matter will be best understood by reference to the drawings, wherein like parts are
designated by like numerals throughout. The following description is intended only by way of
example, and simply illustrates certain selected embodiments of devices, systems, and methods
that are consistent with the subject matter as claimed herein, wherein:
[00020] Fig. 1 illustrates a conventional engine mounting system in accordance with stateof-
the-art.
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[00021] Fig. 2 illustrates an engine mounting system in accordance with an embodiment of
the present disclosure.
[00022] Fig. 3 illustrates a side view of the engine mounting system in accordance with an
embodiment of the present disclosure.
[00023] Fig. 4 illustrates direction of forces acting on a rubber mount by transmission
bracket vibrations in accordance with an embodiment of the present disclosure.
[00024] Fig. 5 illustrates a structure of the rubber mount in accordance with an embodiment
of the present disclosure.
[00025] Fig. 6 illustrates the housing of a rubber casing inside the rubber mount in
accordance with an embodiment of the present disclosure.
[00026] The figures depict embodiments of the present subject matter for the purposes of
illustration only. A person skilled in the art will easily recognize from the following description
that alternative embodiments of the structures and methods illustrated herein may be employed
without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[00027] The detailed description of various exemplary embodiments of the disclosure is
described herein with reference to the accompanying drawings. It should be noted that the
embodiments are described herein in such details as to communicate the disclosure. However, the
amount of details provided herein is not intended to limit the anticipated variations of
embodiments; on the contrary, the intention is to cover all modifications, equivalents, and
alternatives falling within the spirit and scope of the present disclosure as defined by the appended
claims.
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[00028] It is also to be understood that various arrangements may be devised that, although
not explicitly described or shown herein, embody the principles of the present disclosure.
Moreover, all statements herein reciting principles, aspects, and embodiments of the present
disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[00029] The terminology used herein is to describe particular embodiments only and is not
intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and
“the” are intended to include the plural forms as well, unless the context indicates otherwise. It
will be further understood that the terms “comprises”, “comprising”, “includes” and/or
“including,” when used herein, specify the presence of stated features, integers, steps, operations,
elements and/or components, but do not preclude the presence or addition of one or more other
features, integers, steps, operations, elements, components and/or groups thereof.
[00030] It should also be noted that in some alternative implementations, the functions/acts
noted may occur out of the order noted in the figures. For example, two figures shown in
succession may be executed concurrently or may sometimes be executed in the reverse order,
depending upon the functionality/acts involved.
[00031] Unless otherwise defined, all terms (including technical and scientific terms) used
herein have the same meaning as commonly understood by one of ordinary skill in the art to which
example embodiments belong. It will be further understood that terms, e.g., those defined in
commonly used dictionaries, should be interpreted as having a meaning that is consistent with their
meaning in the context of the relevant art and will not be interpreted in an idealized or overly
formal sense unless expressly so defined herein.
[00032] In the following detailed description of the embodiments of the disclosure,
reference is made to the accompanying drawings that form a part hereof, and in which are shown
by way of illustration specific embodiments in which the disclosure may be practiced. These
embodiments are described in sufficient detail to enable those skilled in the art to practice the
disclosure, and it is to be understood that other embodiments may be utilized and that changes may
be made without departing from the scope of the present disclosure. The following description is,
therefore, not to be taken in a limiting sense.
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[00033] Hereinafter, a description of an embodiment with several components in
communication with each other does not imply that all such components are required. On the
contrary, a variety of optional components are described to illustrate the wide variety of possible
embodiments of the present disclosure.
[00034] Fig. 2 illustrates an engine mounting system 200 in accordance with an embodiment
of the present disclosure. The engine mounting system 200 comprises a transmission bracket 202,
body side brackets 204, a ring bracket 206, a molded rubber bush 208, an auxiliary bracket 212,
and a body apron side bracket 214. The transmission bracket 202 is press fitted in the middle of
the molded rubber mount bush 208. The ring bracket 206 has a circular portion 216 and a flange
218, such that the flange 218 is an integrated part of the ring bracket 206. The flange 218 is at
inner circumference of the circular portion 216. Further, the flange 218 is of uneven shape. The
structural details and the configuration of the flange 218 are described in more detail with the help
of Fig. 5 illustrated hereinbelow.
[00035] Fig. 3 illustrates a side view of the engine mounting system 200 as illustrated in
Fig. 2, in accordance with an embodiment of the present disclosure.
[00036] Fig. 4 illustrates the direction of forces acting on the rubber mount 402 by the
vibrations caused due to the transmission bracket. According to an embodiment of the present
disclosure, the forces on the rubber mount 402 act in the transverse direction A-A, longitudinal
direction B-B, and a radial direction C-C. The rubber mount 402 as described herein in the context
of the instant disclosure absorb the forces more efficiently as compared to the conventional
systems and transfer minimum force to the body panels or the body side brackets 404.
[00037] According to an embodiment of the present disclosure, Fig. 5 illustrates a structure
of the rubber mount mounted on the engine mounting system 200 as illustrated in Fig. 2. The
rubber mount comprises a transmission bracket 503, a rubber bush 514, a circular portion 501, not
illustrated in Fig. 5, and a flange portion 502. As illustrated in Fig. 5, the flange is non-uniform.
Fig. 5 illustrates corners R1-R4 of the flange. The corners R1 and R2 are close to the body panels
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510, and the corners R3 and R4 are in close proximity of the battery tray 512. As illustrated in Fig.
5, the corners R1 and R2 of the flange that are close to the body panels 510 have larger radius than
the corners R3 and R4 that are close to the battery tray 512. Further, Fig. 5 illustrates portions 504,
506, and 508 of the flange 502 that are straight. Further, a portion of the flange that is between the
corners R3 and R4, and opposite to the straight portion 508 is circular. Further, the rubber bush
514 has a plurality of slots, and a surface of the rubber bush 514 that is parallel to the flange 512
is not circular. Further, as illustrated in Fig. 5, a portion of the flange 502 that is close to the body
panels 510 is wider than the rest of the portions of the flange 502.
[00038] As illustrated in Fig. 5, the corner R3 is close to the body apron side bracket 214,
as illustrated in Fig. 2 and a distance between the corner R3 and the body apron side bracket 214
is less than a distance between any of the rest of the corners R1, R2, R4 and the body apron side
bracket.
[00039] Further, as illustrated in Fig. 5, the corner R4 is close to the battery tray 512 and a
distance between the corner R4 and the battery tray 512 is less than a distance between any of the
rest of the corners R1, R2, R3 and the battery tray (512).
[00040] Furthermore, the shape of the flange 502 is based on the direction of forces, as
illustrated in Fig. 4, acting on the rubber mount caused by the vibrations of the transmission bracket
which is press fitted in the middle of the rubber mount. Accordingly, the shape of flange 502 is
designed in such a way that corners of the flange 502 have combination of larger radiuses near the
body panels 510 and smaller radiuses near the battery tray 512, with the other portion of the flange
being kept straight to counter the forces acting in other directions. Such a shape of the flange results
in efficient absorption of the forces acting thereto and transfers minimum forces to the body panels
510, leading to a significant reduction of noise and vibrations transferred to the body panels and
other vehicular components.
[00041] Fig. 6 illustrates a rubber mount 602 and a rubber holder 604 that is housed inside
the rubber mount 602, in accordance with an embodiment of the present disclosure. As illustrated
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in Fig. 6, the flange 606 of the rubber mount 602 is separated from the rubber 604 and there is a
clearance there between.
[00042] It is further in accordance with an embodiment of the present disclosure that the
rubber mount is made of a metal or a plastic, as can be conceived by a person skilled in the art.
TECHNICAL ADVANTAGES
[00043] With the help of the solution as proposed herein in the context of the present
disclosure, the vibrations of the engine transmission bracket are absorbed more efficiently and
minimum forces gets transferred to the body panels, thereby resulting in reduction of the noise,
vibration and harshness (NVH), and increase in rigidity of the engine mounting system.
[00044] The present disclosure further provides for an easy assembly, with minimal
inclusion of the additional components, thereby satisfying various structural and operational
requirements and parameters.
[00038] While the foregoing describes various embodiments of the present disclosure, other and
further embodiments of the present disclosure may be devised without departing from the basic
scope thereof. The scope of the invention is determined by the claims that follow. The present
disclosure is not limited to the described embodiments, versions or examples, which are included
to enable a person having ordinary skill in the art to make and use the present disclosure when
combined with information and knowledge available to the person having ordinary skill in the art.

Claims:We Claim:
1. A rubber mount comprising:
a circular portion (501); and
a flange (502) along the circumference at an inner end of the circular portion (501), wherein
the flange (502) is non-uniform, and wherein when the rubber mount is mounted on a transmission
bracket (503), corners (R1, R2) of the flange (502) that are close to body panels (510) have larger
radius than corners (R3, R4) that are close to a battery tray (512).
2. The rubber mount as claimed in claim 1, wherein the portions (504, 506, 508) of the flange (502)
other than the corners are formed straight.
3. The rubber mount as claimed in claim 1, wherein a portion of the flange (502) that is close to
the body panels (510) is wider than the rest of the portions of the flange (502).
4. The rubber mount as claimed in claim 2, wherein a portion of the flange (502) that is between
the corners (R3, R4) and opposite to the portion (508) is circular.
5. The rubber mount as claimed in claim 1, wherein, when the rubber mount is mounted on the
transmission bracket (503), the rubber mount houses a rubber bush (514), and wherein the flange
(502) is separated from the rubber bush (514).
6. The rubber mount as claimed in claim 5, wherein the rubber bush (514) has a plurality of slots,
and a surface of the rubber bush (514) that is parallel to the flange (512) is not circular.
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7. The rubber mount as claimed in claim 1, comprising a body apron side bracket (214) mounted
on the circular portion (501), wherein, when the rubber mount is mounted on the transmission
bracket (503), a distance between the corner (R3) and the body apron side bracket (214) is less
than a distance between any of the rest of the corners (R1, R2, R4) and the body apron side bracket
(214).
8. The rubber mount as claimed in claim 1, wherein, when the rubber mount is mounted on the
transmission bracket (503), a distance between the corner (R4) and the battery tray (512) is less
than a distance between any of the rest of the corners (R1, R2, R3) and the battery tray (512).
9. The rubber mount as claimed in claim 1, wherein the rubber mount is made of metal or plastic.
10. The rubber mount as claimed in claim 1, wherein the flange (502) is integrated to the circular
portion (501) of the rubber mount.