Field of invention

The subject matter described herein, relates to a vibration damper unit and more particularly relates to the use of the vibration damper unit for mounting engine assembly on the two wheeled vehicle in order to reduce the vibrations.

Background of the invention

Typically, the frame structure for a motorcycle is provided with a head pipe that is adapted to journal a front wheel for steering movement. The frame also supports a pair of main frame members that are affixed at their forward ends to the head pipe and which extend downwardly and rearward there from to a pivot point for a rear wheel suspension. Cross member means affix the main frame members to each other, rearward of the head pipe. The two down tubes of the mainframe member extends downwardly and obliquely. A mounting bracket is welded connecting both the down tubes transversely. The position of the bracket is closer to the front engine mounting. Two pairs of bores are provided in the bracket in the vertical direction.

A pair of L shaped brackets is placed with the shorter leg face facing the mounting bracket and a pair of bores provided on the said face matching the bores provided on the mounting bracket. Another opening is provided in the longer leg face of the L shaped brackets to coincide with the engine mounting bore of the engine casing. Two pairs of bolts are used for connecting L shaped bracket to mounting bracket. Another bolt is used for connecting the other end of the bracket to the engine.

Due to the rigid coupling of the engine to the frame, the transfer of vibrations from the engine to the frame results in discomfort to the rider.

Also, due to space and other constraints it is difficult to modify the frame and the engine even though there are many known methods of reducing vibration.

Hence there is a need to overcome the above problem without the need to change the layout of the frame of the vehicle and still prevent the transfer of vibrations from the engine to the rider.

Summary of the invention

The present subject matter herein described is related to a vibration damper unit fitted in a two wheeled vehicle in order to reduce vibrations in the said vehicle. Said vibration damper unit has a front portion, a rear portion and multiple fastening members. The front portion has multiple silent blocks made up of a damper element secured between metallic bushes defining the inner periphery and the outer periphery of the silent block and the fastening members are secured inside the silent block. The vibration damper unit is joining engine assemble to the frame of the vehicle with the fastening members which are passing through the vibration damper unit.

These and other features, aspects, and advantages of the present subject matter will become better understood with reference to the following description and appended claims. This summary is provided to introduce a selection of concepts in a simplified form. 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.

Brief description of the drawings

The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus, are not limited of the present invention and wherein:

Figure 1 is the side view of the vehicle describing the arrangement of the claimed vibration damper unit over the two wheeled vehicle.

Figure 2 is the cross sectional view of the vehicle depicting the essential embodiments of the invention and their arrangement on the vehicle.

Figure 3 is depicting the essential embodiments of the claimed vibration damper unit.

Detailed description of the invention

The embodiments disclosed below are not intended to be exhaustive or to limit the invention to the precise forms disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may utilize their teachings.

The application of this invention is extended to all kind vehicles.

In the present disclosure, figure 1 is describing the arrangement of the claimed vibration damper units (105, 106) between the frame (101) and the engine assembly (10). Said frame (101) is having three parts i.e. a left member (102), a right member (103) and a centre member (104). The centre member (104) is connecting the left member (103) and the right member (103) and the vibration damper unit (105, 106) is joining the centre member (104) to the engine assembly (10) at multiple locations. In the given figure two vibration damper units (105, 106) are being used to mount the engine assembly (10) over the frame (101) of the vehicle. Said vibration damper units (105, 106) have a front portion (114 as in figure 3) and a rear portion (113 as in figure 3). The front portion (114 as in figure 3) is attached with the frame (101) of the vehicle through the fastening members (108) which are passing through the silent blocks (107). The rear portion (113 as in figure 3) is attached with the engine assembly (10) through the fastening unit (109) passing through the bore (100) provided.

Further, figure 2 is the cross-sectional view of the vehicle showing the arrangement of the vibration damper unit (106) over the frame (101 as in figure 1, right member 103 shown in figure 2) and the engine assembly (10 as in figure 1). Front portion (114 as in figure 3) of the vibration damper unit (106) is connected with the centre member (104) of the frame (101 as in figure 1, right member 103 shown in figure 2) at multiple locations and rear portion (113 as in figure 3) of the vibration damper unit (106) is connected to the engine assembly (10 as in figure 1). Front portion (114 as in figure 3) of the vibration damper unit (106) has silent blocks (107 as in figure 1) through which the fastening members (108 as in figure 1) are passing and enabling the fixing of the vibration damper unit (106) to the frame. Rear portion (113 as in figure 3) of the vibration damper unit (106) is attached with the engine assembly (10 as in figure 1) through the fastening element (109 as in figure 1) which is passing through the bore (100) provided in the vibration damper unit (106). The silent block (107 as in figure 1) is made up of a damper element (110) placed with inner (112) and outer (111) metal bushes which defines the inner (112) and outer (111) periphery of the silent block (107 as in figure 1), which creates a ring like structure through which the fastening structure (108) passes.

Figure 3 is depicting the best mode of the invention i.e. best enabling structure of the claimed vibration damper units (105, 106). Left vibration damper unit (105) and right vibration damper unit (106) are used in the given exemplary description. Said vibration damper units (105, 106) has two basic parts one is front portion (114) and the other is rear portion (113) fixed perpendicular to each other. Front portion (114) of the vibration damper units (105, 106) has multiple silent blocks (107 as in figure 1), which helps to reduce the vibration level of the vehicle as the silent block (107 as in figure 1) is made up of a damper unit (110) secured between two metal bushes (111, 112) which are defining the inner (112) and the outer periphery (111) of the silent block (107 as in figure 1) resulting in a ring like structure through which the fastening element (108 as in figure 1) passes. The rear portion (113) of the vibration damper units (105, 106) is having a bore (100) on its rear end to facilitate the fixation of the vibration damper unit (105, 106) with the engine assembly (10 as in figure 1) through the fastening element (109 as in figure 1).

Claims:

What is claimed is:

1) A vibration damper unit comprising;

a) a front portion comprising a plurality of silent block;

wherein, the plurality of silent block is comprising a damper element secured between a plurality of metallic bush;

wherein, the plurality of silent block is comprising an inner periphery and an outer periphery;

wherein, the plurality of metallic bush is defining the inner periphery and the outer periphery of the plurality of silent block;

b) a rear portion comprising at least one bore;

c) a plurality of fastening member;

wherein, the plurality of fastening member is secured inside the silent block; and

wherein, the plurality of fastening member is secured in at least one bore.

2) The vibration damper unit, as claimed in claim 1, wherein the plurality of fastening member is secured with the vibration damper unit at a plurality of location.

3) A two wheeled vehicle comprising:

a) an engine assembly;

b) a frame, comprising a left member, a right member and a centre member;

wherein, the centre member is connecting the left member to the right member; c) a plurality of vibration damper unit;

wherein the plurality of vibration damper unit comprising a front portion having a plurality of silent block;

wherein, the plurality of silent block is comprising a damper element secured between a plurality of metallic bush;

wherein, the plurality of silent block is comprising an inner periphery and an outer periphery;

wherein, the plurality of metallic bush is defining the inner periphery and the outer periphery of the plurality of silent block;

wherein the plurality of vibration damper unit comprising a rear portion comprising at least one bore;

wherein the plurality of vibration damper unit comprising a plurality of fastening member;

wherein, the plurality of fastening member is secured inside the silent block on the front portion;

wherein, the plurality of fastening member is secured in at least one bore on the rear portion;

wherein, the front portion is joined to the frame with the plurality of fastening member; and

wherein, the rear portion is joined to the engine assembly with the plurality of fastening member.

4) The two wheeled vehicle, as claimed in claim 1, wherein the vibration damper unit is secured in the transverse direction of the two wheeled vehicle.

5) The two wheeled vehicle, as claimed in claim 1, wherein the vibration damper unit is joined with the frame through the centre portion at a plurality of location.

6) The two wheeled vehicle, as claimed in claim 1, wherein the vibration damper unit is joined with the engine assembly at a plurality of location.