The present subject matter described herein, relates to a bracket member at a location of vibration transfer in vehicle front body structure. More particularly, the bracket member is located proximately to mounting of an engine mount on a longitudinal member of the vehicle.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Generally, an internal combustion engine is mounted onto a unibody frame of a vehicle through an engine mount. The engine mount portion of a vehicle is a portion which transmits engine vibration to the unibody frame of the vehicle. The vibrations from the unibody frame in turn get transmitted to the floor of the vehicle, where the driver or passenger rests his feet and are perceived by the driver or passenger. The primary reason for the transfer of tactile vibrations in the frequency range of 100Hz to 200Hz to the floor of the vehicle is low dynamic stiffness at the portion of the engine mount.
[0004] Referring to fig. 1, there is provided a portion of an engine mount 12 of a vehicle. An engine is coupled to an unibody frame of a vehicle through the engine mount 12. The engine mount 12 is in turn mounted on a longitudinal member 14 of the unibody frame of the vehicle. A battery tray 16 is held in a position over a bracket Bl extending vertically upward from the engine mount 12 and a bracket B2 extending vertically upward from the longitudinal member 14.
[0005] Technical Problem: As shown in the fig 1, generally, the battery tray 16 vibrates because of the transfer of vibration from the engine mount 12 but in a situation where the frequency of vibration meets the natural frequency of the

battery tray 16, the battery tray 16 vibrates with high amplitude producing a moment resulting in the twisting of the battery tray 16. The twisting of the battery tray 16 ultimately results in the movement of the engine mount 12 in the width direction of vehicle i.e., direction "A" as shown in fig. 1. As a result, more vibrations are transferred to the vehicle floor and are perceived by driver or passengers of the vehicle.
[0006] One solution for the above mentioned technical problem is to increase the thickness of the panels at the floor of the vehicle resulting in adding weight to the unibody frame and ultimately resulting in high manufacturing cost and low fuel efficiency.
[0007] Another solution is to add a mass damper at a predetermined location of an engine mount having maximum deformation which again results in adding weight to the vehicle thus increasing overall vehicle cost.
[0008] Therefore, a simple and in-expensive solution is required which can improve vibration aspect of the Noise, Vibration and Harshness (NVH) performance of a vehicle.
OBJECTS OF THE DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[0010] The principal object of the present invention is to provide a bracket member proximal to an engine mount for improving vibration aspect of NVH performance of a vehicle.
[0011] Another object of the present invention is to provide a bracket member proximal to an engine mount of a vehicle for improving comfort level of a passenger or a driver.
[0012] One more object of the present invention is to provide a bracket member proximal to an engine mount for reducing the overall weight of a unibody frame of a vehicle.

[0013] Still another object of the present invention is to provide a bracket member proximal to an engine mount for improving fuel efficiency of a vehicle.
[0014] Further one more object of the present invention is to provide a bracket member proximal to an engine mount which facilitates in manufacturing a unibody frame of a vehicle at less cost.
[0015] Yet another object of the present invention is to provide a bracket member which adds structural rigidity at a location of an engine mount of a vehicle.
[0016] Still one more object of the present invention is to provide a bracket member which facilitates in uniform strain energy distribution and reduces portions of peak strain energy at an engine mount of a vehicle.
[0017] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.
SUMMARY
[0018] This summary is provided to introduce concepts related to a bracket member for improving tactile vibration in 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.
[0019] In an embodiment, the present disclosure relates to an H-shaped structural member provided proximal to an engine mount of a vehicle. The H-shaped structural member includes two vertical members bent to form an arc shaped structure from top portion to bottom portion and a horizontal member provided in between the two vertical members. The vertical members are coupled to a battery tray at the top portion and to a longitudinal member at the bottom portion.
[0020] 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 THE DRAWINGS
[0021] 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:
[0022] Figure 1 illustrates a perspective view of a portion of an engine mount of a vehicle according to the prior art;
[0023] Figure 2 illustrates a perspective view of location of a bracket member, in accordance with an embodiment of the present disclosure;
[0024] Figure 3(a) illustrates an isometric view of a bracket member of figure
2;
[0025] Figure 3(b) illustrates a front view of a bracket member of figure 3(a);
[0026] Figure 3(c) illustrates a top view of a bracket member of figure 3(a);
[0027] Figure 4 illustrates a plot of vibration level at a front cabin of a vehicle before and after the introduction of a bracket member;
[0028] Figure 5 illustrates a plot of vibration level at a rear cabin of a vehicle before and after the introduction of a bracket member; and
[0029] Figure 6 illustrates a plot vibration level at an engine mount of a vehicle before and after the introduction of a bracket member.
[0030] 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
[0031] 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 clearly 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 scope of the present disclosure as defined by the appended claims.
[0032] 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.
[0033] The terminology used herein is for the purpose of describing 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 clearly 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.
[0034] 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, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

[0035] In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly.
[0036] 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.
[0037] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0038] To this as shown in figure 2, there is provided a bracket member 200 at the location of an engine mount 12 coupled to a battery tray 16 at top portion and a longitudinal member 14 at bottom portion.
[0039] Referring to fig. 3(a), 3(b) and 3(c), the bracket member 200 is an H-shaped structural member comprising two vertical members (VI and V2) and a horizontal member HI. The horizontal member HI is connected to the two vertical members (VI and V2) at its either ends. In one embodiment, the two vertical members (VI and V2) are bent to form an arc shaped structure from their top portion to bottom portion. The horizontal member HI is provided with a plurality of crests (CI and C2) at either ends defining a trough Tl in between therein. The horizontal member HI at either ends of the crests (CI and C2) is

connected proximal to the bottom portion of the two vertical members (VI and V2) thereby adding structural rigidity to the bracket member 200. Each of the vertical members (VI and V2) is provided with a connecting location LI at its top and a connecting location L2 at its bottom.
[0040] In an aspect, the horizontal member HI can be a straight structural member or bent to form any pattern
[0041] In an aspect, the vertical members (VI and V2) are connected to the battery tray 16 at the connecting location LI and to the longitudinal member 14 at the connecting location L2 either through welding such as spot welding or arc welding and the like or with the help of fasteners.
[0042] In an aspect, the horizontal member HI may be connected at any portion of the two vertical members (VI and V2), such as top portion, middle portion and the like based on the requirement so as to be obvious to a person skilled in the art.
[0043] In an aspect, the horizontal member HI may be connected to the two vertical members (VI and V2) horizontally or at an inclined angle.
[0044] In an aspect, the height of the vertical members (VI and V2) and the length of the horizontal member HI are determined depending on the location and deformation mode of the battery tray 16 and the longitudinal member 14 along with the engine mount 12.
[0045] In an aspect, the vertical members (VI and V2) are coupled to the battery tray 16 at the connecting location LI and to the longitudinal member 14 at the connecting location L2.
In another embodiment, the two vertical members (VI and V2) are L-shaped structures and the horizontal member HI connecting the two vertical members (VI and V2) may be straight or bent to form any pattern. In another aspect, the vertical members (VI and V2) are straight.
[0046] In an aspect, the bracket member 200 is arcuate shaped and its horizontal member HI is bent to form a partem such that the transient response of

vibration is low and majority of the vibrations gets absorbed by the bracket member 200 in the meantime.
[0047] Test Results: As shown in fig. 4, the vibration level of any system is measured through a plot of frequency vs mobility. The X-axis of the plot indicates frequency in Hertz (Hz) whereas the Y-axis of the plot indicates mobility in Decibels (dB). The black colour line in the legend indicates the vibration level at a front cabin of a vehicle before the introduction of the bracket member 200 whereas the pink colour line in the legend indicates the vibration level at a front cabin of a vehicle after the introduction of the bracket member 200. It is clearly evident from the plot (pink colour line) that the vibrations at the front cabin of the vehicle after the introduction of the bracket member 200 are reduced.
[0048] As shown in fig. 5, the vibration level of any system is measured through a plot of frequency vs mobility. The X-axis of the plot indicates frequency in Hertz (Hz) whereas the Y-axis of the plot indicates mobility in Decibels (dB). The black colour line in the legend indicates the vibration level at a rear cabin of a vehicle before the introduction of the bracket member 200 whereas the pink colour line in the legend indicates the vibration level at a rear cabin of a vehicle after the introduction of the bracket member 200. It is clearly evident from the plot (pink colour line) that the vibrations at the rear cabin of the vehicle after the introduction of the bracket member 200 are reduced.
[0049] As shown in fig. 6, the vibration level of any system is measured through a plot of frequency vs sound. The X-axis of the plot indicates frequency in Hertz (Hz) whereas the Y-axis of the plot indicates sound in Decibels (dB). The black colour line in the legend indicates the vibration level at an engine mount of a vehicle before the introduction of the bracket member 200 whereas the pink colour line in the legend indicates the vibration level at an engine mount of a vehicle after the introduction of the bracket member 200. It is clearly evident from the plot (pink colour line) that the vibrations at the engine mount of the vehicle after the introduction of the bracket member 200 are reduced.

[0050] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least

one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
[0051] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention 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 invention when combined with information and knowledge available to the person having ordinary skill in the art.

WE CLAIM

A bracket member (200) for improving tactile vibration in a
vehicle comprising:
an H-shaped structural member including two vertical members (VI and V2) bent to form an arc shaped structure from their top portion to bottom portion and a horizontal member (HI) connecting the two vertical members (VI and V2),
said vertical members (VI and V2) coupled to a battery tray (16) at the top portion and to a longitudinal member (14) at the bottom portion.
2) The bracket member as claimed in claim 1, wherein said horizontal member (HI) have a plurality of crests (CI and C2) on its either ends defining a trough (Tl) in between therein.
3) The bracket member as claimed in claim 1, wherein said horizontal member (HI) is coupled to the two vertical members (VI and V2) either horizontally or at an inclined angle.
4) The bracket member as claimed in claim 1, wherein said vertical members (VI and V2) are L-shaped structures.
5) The bracket member as claimed in claim 1, wherein said horizontal member (HI) is straight or bent to form any partem.
6) The bracket member as claimed in claim 1, wherein the height of the vertical members (VI and V2) and the length of the horizontal member (HI) are determined depending on the location and deformation mode of said battery tray (16) and said longitudinal member (14) along with an engine mount (12).
7) The bracket member as claimed in claim 1, wherein said vertical members (VI and V2) are coupled to said battery tray (16) at a connecting location (LI) and to said longitudinal member (14) at a

connecting location (L2) either through welding or with the help of fasteners.
8) The bracket member as claimed in claim 1, wherein said vertical members (VI and V2) are straight.