Claims:We claim:
1. A vehicle (100) comprising:
a front portion (F) defining a front frame structure (101) and a rear portion (R) defining a rear frame structure (102);
said rear frame structure includes a left rear frame member (103) and a right rear frame member (104), the left rear frame member (103) being disposed parallel to the right rear frame member (103) at the rear portion (R);
a traction assembly (107) disposed in the rear portion (R) supported with the rear frame structure (102);
wherein, the traction assembly (107) is disposed between the left rear frame member (103) and the right rear frame member (104); and
wherein a first axis (Y-Y’), passing through a lateral substantially central plane of the traction assembly (107), passing in the vehicle length direction, is disposed at a predetermined offset (O) to a second axis (A-A’) passing longitudinally through a lateral center plane of the vehicle (100).
2. The vehicle (100) as claimed in claim 1, wherein the value of offset (O) is in range of 0 mm to 200 mm.
3. The vehicle (100) as claimed in claim 1, wherein the traction assembly (107) is disposed on a rear side of the passenger seat assembly (not shown), and the traction assembly (107) includes a motor (107 (a)) coupled to a gear box (107 (b)) in width wise direction of the vehicle (100).
4. The vehicle (100) as claimed in claim 1, wherein the traction assembly (107) is supported on a first bridge member (105) from a front side and a second bridge member (106) from a rear side, the first bridge member (105) connects the left rear frame member (103) and the right rear frame member (104) in front of the traction assembly (107), and the second bridge member (106) connects the left rear frame member (103) and the right rear frame member (104) behind the traction assembly (107).
5. The vehicle (100) as claimed in claim 1, wherein the traction assembly (107) is mounted on the first bridge member (105) and the second bridge member (106) through a plurality of vibration isolating resilient member (113, 115).
6. The vehicle (100) as claimed in claim 5, wherein one or more front vibration isolating resilient member (113) of the plurality of resilient member (113, 115) are disposed in one or more front slots (116(a)) of one or more front brackets (114 (a)) extending downward from the first bridge member (105).
7. The vehicle (100) as claimed in claim 5, wherein one or more rear vibration isolating resilient members (115) of the plurality of resilient member (113, 115) are disposed in one or more rear slots (116(b)) of one or more rear brackets (114(b)) extending above the second bridge member (106).
8. The vehicle (100) as claimed in claim 7, wherein a lateral distance (Df) between the mounting axis of front pair of vibration isolating resilient member (113) is substantially equal to a lateral distance (Dr) between the mounting axis of the rear pair of vibration isolating resilient member (115).
9. The vehicle (100) as claimed in claim 8, wherein said lateral distance (Df) is substantially symmetrically disposed about the longitudinal axis (A-A’) and said distance (Dr) is substantially symmetrically disposed about the longitudinal axis (Y-Y’).
10. The vehicle (100) as claimed in claim 1, wherein the traction assembly (107) is attached to the first bridge member (105) through a first attachment means (117), and to the second bridge member (106) through a second attachment means (118), and a third attachment means (119).
11. The vehicle (100) as claimed in claim 10, wherein the first attachment means (117) comprising a cross member assembly (126) including a first bracket (129), a second bracket (130), and a third bracket (131) disposed in a substantially center portion of the cross member assembly (126), the first bracket (129) being disposed parallel to the second bracket (130) and said third bracket (131) placed between said first bracket (129) and said second bracket (130) and substantially orthogonal to the first (129) and the second bracket (130), and the first bracket (129), the second bracket (130) and the third bracket (131) being configured to support the traction assembly (107) on at least one location.
12. The vehicle (100) as claimed in claim 11, wherein the cross-member assembly (126) is a horizontal member with curved ends, one or more mounting provisions (128) being disposed on each of the curved ends, said one or more mounting provisions (128) are aligned to the one or more front vibration isolating resilient members (113) and configured to be attached to the one or more front slots (116(a)).
13. The vehicle (100) as claimed in claim 12, wherein the one or more mounting provisions (128) of each of said first attachment means (117), said second attachment means (118), and said third attachment means (119) are configured to substantially form a parallelogram (143).
14. The vehicle (100) as claimed in claim 13, wherein said traction assembly is disposed one of outside said parallelogram (143) and substantially within said parallelogram (143), when said traction assembly (107) is viewed from top.
15. The vehicle (100) as claimed in claim 10, wherein one end of the second attachment means (118) is attached to the rear side of the gear box (107(b)) and other end is connected to the second bridge member (106) placed at the rear side of the traction assembly (107).
16. The vehicle (100) as claimed in claim 15, wherein the second attachment means (118) includes a bracket (138), said bracket (138) has a first surface (132) and a second surface (133), said first surface (132) and said second surface (133) being disposed parallel to each other.
17. The vehicle (100) as claimed in claim 16, wherein the bracket (138) includes an upper reinforcement member (135) and a bottom reinforcement member (136), a top surface (134) of said bracket includes a protruding surface (137), said protruding surface (137) is a circular protruding structure (138) to accommodate one or more fastening means (125).
18. The vehicle (100) as claimed in claim 10, wherein one side of the third attachment means (119) is attached to the motor (107(a)) and other side is connected on the second bridge member (106) placed at the rear side of the traction assembly (107).
19. The vehicle (100) as claimed in claim 18, wherein said third attachment means (119) is a metal member (140) having a substantially circular shape with an opening in centre, a top side of said metal member (140) includes a protruding surface (137) with one circular protruding end to accommodate the one or more fastening means (not shown).
20. The vehicle (100) as claimed in claim 19, wherein said third attachment means (119) is provided with a plurality of reinforcing members (141) on both sides of said protruding surface (137), said third attachment means (119) is provided with a three-point mounting (142) on the metal member (140) with the motor (107 (a)). , Description:TECHNICAL FIELD
[0001] The present subject matter relates generally to a vehicle, and more particularly but not exclusively relates to a traction assembly of the vehicle.
BACKGROUND
[0002] Generally, in internal combustion engine powered vehicles, an engine along with a transmission unit and a gear box unit drives the vehicle. In hybrid vehicles, the traction system includes the engine with the transmission unit, the gear box and a motor powered by a battery. Similarly, in electric vehicle, the traction system includes the motor along with the transmission unit and the gear box with differential unit. Mostly, the motor is mounted on the solid axle transmission unit.

BRIEF DESCRIPTION OF THE DRAWINGS
[0003] The details are described with reference to an embodiment of a three wheeled autorickshaw along with the accompanying figures. The same numbers are used throughout the drawings to reference similar features and components. Figure 1 exemplarily illustrates a schematic top view of three-wheeled vehicle.
[0004] Figure 2 exemplarily illustrates an exploded view of traction assembly along with a plurality of vibration isolating resilient member.
[0005] Figure 3 (a) exemplarily illustrates a top view of the traction assembly.
[0006] Figure 3 (b) exemplarily illustrates an exploded view of a clamp.
[0007] Figure 4 (a) exemplarily illustrates an exploded view of a first attachment means.
[0008] Figure 4 (b) exemplarily illustrates an exploded view of a Second attachment means and a third attachment means.
[0009] Figure 5 exemplarily illustrates different views of the first attachment means of the traction assembly.
[00010] Figure 6 exemplarily illustrates different views of the second attachment means of the traction assembly.
[00011] Figure 7 exemplarily illustrates different views of the third attachment means of the traction assembly.

DETAILED DESCRIPTION

[0001] The motor, when performing its function to convert electric energy to kinetic energy, produces radial forces and these radial forces causes a stator housing to vibrate and thus results in the production of noise and vibrations. These vibrations from the stator housing is transferred to mounting points and receiving structures of the motor which is undesirable. In addition to this, vibrations produced by the stator housing can also impact an axis misalignment between the motor and the gear box. Due to the vibrations, coupling means present between the motor and the gear box may move away from the axis of alignment, thereby resulting in disrupting the configuration. Such misalignment does not allow the gear box and the transmission unit to drive the wheels of the vehicle at best efficiency resulting in a poor or inferior traction system. Therefore, there exists a need for an improved mounting system for a traction motor for a vehicle which overcomes above problems and other problems of known art.
[0002] Mounting layout for the traction assembly in any vehicle is very critical, and should be capable of holding the traction assembly with stability, precise alignment as well as dampen the vibrations and noises produced within the traction system. An objective of the present subject matter is to provide a secure, precise and robust mounting configuration to dampen the vibrations produced by a motor and to provide smooth handling of the vehicle and greater rider comfort. The present subject matter is described using an exemplary three-wheeled electric vehicle, whereas the claimed subject matter is applicable to a three as well as four-wheeled vehicles, with required changes and without deviating from the scope of invention. In the present subject matter, a vehicle has a front portion defining a front frame structure and a rear portion defining a rear frame structure. The left rear frame member being disposed parallel to the right rear frame member at the rear portion of the vehicle. A traction assembly is disposed in the rear portion R supported with the rear frame structure. The traction assembly is disposed between the left rear frame member and the right rear frame member. A first axis Y-Y’, passing through a lateral substantially central plane of the traction assembly, passing in the vehicle length direction, is disposed at a predetermined offset ‘O’ to a second axis (A-A’) passing longitudinally through a lateral center plane of the vehicle.
[0003] As per an aspect of the present subject matter, the value of said predetermined offset ‘O’ ranges from 0 mm to 200 mm.
[0004] As per an aspect of the present subject matter, the traction assembly is disposed on a rear side of the passenger seat assembly, and the traction assembly includes a motor coupled to a gear box in width wise direction of the vehicle.
[0005] As per an aspect of the present subject matter, the traction assembly is supported on a first bridge member from a front side and a second bridge member from a rear side. The first bridge member connects the left rear frame member and the right rear frame member in front of the traction assembly, and the second bridge member connects the left rear frame member and the right rear frame member behind the traction assembly.
[0006] As per another aspect of the present subject matter, the traction assembly is mounted on the first bridge member and the second bridge member through a plurality of vibration isolating resilient member. One or more front vibration isolating resilient member of the plurality of resilient members are disposed in one or more front slots of one or more front brackets extending downward from the first bridge member. One or more rear vibration isolating resilient member of the plurality of resilient member are disposed in one or more rear slots of one or more rear brackets extending above the second bridge member.
[0007] As per an aspect of the present subject matter, a lateral distance (Df) between the mounting axis of front pair of vibration isolating resilient member is substantially equal to a lateral distance (Dr) between the mounting axis of the rear pair of vibration isolating resilient member.
[0008] As per an additional aspect of the present subject matter, the lateral distance (Df) is substantially symmetrically disposed about the longitudinal axis (A-A’) and said distance (Dr) is substantially symmetrically disposed about the longitudinal axis (Y-Y’).
[0009] As per another aspect of the present subject matter, the traction assembly is attached to the front bridge member through a first attachment means, and to the rear bridge member through a second attachment means and a third attachment means.
[00010] As per yet another aspect of the present subject matter, the first attachment means having a cross member assembly, said cross member assembly being configured to have a first bracket, a second bracket, and a third bracket disposed in a substantially center portion of the cross-member assembly. The first bracket being disposed parallel to the second bracket and said third bracket placed between said first bracket and said second bracket. The first bracket, second bracket and the third bracket being configured to support the traction assembly on at least one location. The cross-member assembly is a horizontal member with curved ends, one or more mounting provisions being provided on each of the curved ends, said one or more mounting provisions are aligned to the one or more front vibration isolating resilient members and configured to be attached to the one or more front slots. As per an embodiment, the horizontal member is a tube cross section member.
[00011] As per yet another aspect of the present subject matter, the one or more mounting provisions of each of said first attachment means, said second attachment means, and said third attachment means are configured to substantially form a parallelogram. The traction assembly is disposed one of outside said parallelogram and substantially within said parallelogram, when said traction assembly is viewed from top.
[00012] As per yet another aspect of the present subject matter, one end of the second attachment means is attached to the rear side of the gear box and the other end is connected to the second bridge member placed at the rear side of the traction assembly. The second attachment means includes a bracket, said bracket has a first surface and a second surface. The first surface and the second surface being disposed parallel to each other.
[00013] As per an aspect of the present subject matter, the bracket includes an upper reinforcing member and a bottom reinforcing member. A top surface of the bracket includes a protruding surface, said protruding surface is a circular structure to accommodate one or more fastening means.
[00014] As per another aspect of the present subject matter, one side of the third attachment means is attached to the motor and other side is connected on the second bridge member placed at the rear side of the traction assembly. The third attachment means is a metal member having a circular shape with an opening in the centre. A top side of said metal member includes a protruding surface with one circular end to accommodate the one or more fastening means. The third attachment means is provided with a plurality of reinforcing members on both sides of said protruding surface. The third attachment means is provided with a three-point mounting on the metal member with the motor. The embodiments of the present invention will now be described in detail with reference to an embodiment in a three wheeled electric vehicle along with the accompanying drawings. However, the present invention is not limited to the present embodiments. The present subject matter is further described with reference to accompanying figures. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[00015] Fig. 1 exemplarily illustrates a schematic top view of a three-wheeled vehicle 100. Said three-wheeled electric vehicle 100 includes a front portion F , a rear portion R, a left rear frame member 103, a right rear frame member 104, a first bridge member 105, a second bridge member 106, a traction assembly 107, a driver seat assembly 108, a driver backrest 109, a passenger seat assembly (not shown), a front wheel 111, and a pair of rear wheels 112. The front portion F defining a front frame structure 101 and the rear portion R defining a rear frame structure 102. The rear frame structure 102 includes the left rear frame member 103 and the right rear frame member 104 disposed parallel to each other The first bridge member 105 is disposed between the left rear frame member 103 and right rear frame member 104 configured to support the rear frame ahead of the traction assembly 107. The second bridge member 106 connects the left rear frame member 103 and the right rear frame member 104 behind the traction assembly 107. The front portion R of the vehicle 100 includes the driver seat assembly 108 having a driver seat 108 (a) and the driver backrest 109 disposed in line with the vehicle longitudinal direction. The passenger seat assembly (not shown) for carrying passengers is disposed in the rear portion R of the vehicle 100. The front wheel 111 is provided in the front portion R of the vehicle 100 and a pair of rear wheels 112 are provided at the rear portion R of the vehicle 100. A first axis Y-Y’, passing through a lateral central plane of the traction assembly 107, passing in the vehicle length direction, is disposed at a predetermined offset (O) to a second axis A-A’ passing longitudinally through a lateral central plane of the vehicle 100. The traction assembly 107 is disposed in the rear portion R of the passenger seat assembly (not shown) of the vehicle 100. The traction assembly 107 being supported to the rear frame structure 102 by a plurality of attachment means (not shown). The traction assembly includes a motor 107 (a) coupled to a gear box 107 (b) in width wise direction of the vehicle 100. As per an embodiment, the offset (O) can be up to a maximum value of 200 mm, beyond which the mass and Centre of Gravity balance of the vehicle 100 and its traction assembly 107 becomes unstable which is undesirable.
[00016] Fig. 2 exemplarily illustrates an exploded view of the traction assembly 107 along with a plurality of vibration isolating resilient members (113, 115). In the present embodiment, a first pair of vibration isolating resilient member 113 is disposed on the rear side of the passenger seat assembly (not shown).The plurality of resilient member (113) are disposed in one or more front slots 116(a) of one or more front brackets 114 (a) extending downward from the first bridge member (105). The plurality of resilient member (115) are disposed in one or more rear slots 116(b) of one or more rear brackets 114(b) extending above the second bridge member 106. The traction assembly 107 is disposed on the frame of the vehicle 100 through plurality of resilient member 115 by means of a bolt (not shown). The first pair of vibration isolating resilient member 113 and the second pair of vibration isolating resilient member 115 are made up of elastic material which can dampen the vibrations and noise produced in the vehicle 100. This vibration isolating resilient members (113, 115) acts as a cushioning member and thus dampen the vibrations and noise produced during the vehicle operation and provides stability to the traction assembly 107. Also, the dampening of the vibrations ensures smooth riding comfort to the rider and passenger of the vehicle 100. The configuration of vibration isolating resilient members in a pair at the front side 113 and a pair at the rear side 115 enables achieving good alignment of the mounting of the traction assembly 107 by accommodating any geometrical variations in the mounting dimensions of the traction assembly 107. As per an aspect of the present invention, the lateral distance (Df) (shown in fig.1) between the mounting axis of front pair of mountings 113 is substantially equal to the lateral distance (Dr) (shown in fig.1) between the mounting axis of the rear pair of mountings 115. As per an additional aspect of the present invention, the lateral distance (Df) (shown in fig.1) is substantially symmetrically disposed about the longitudinal axis A-A’ and the lateral distance (Dr) (shown in fig.1) is substantially symmetrically disposed about the longitudinal axis Y-Y’. Also the mounting of the traction assembly 107 by means of three attachment means (one in the front and two in the rear) achieves a secure, stable and robust mounting of the traction assembly 107 rendering it being capable of overcoming all problems cited earlier.
[00017] Fig. 3 (a) exemplarily illustrates a top view of the traction assembly 107. The traction assembly 107 is attached to the front bridge member (not shown) through a first attachment means 117, and to a rear bridge member (not shown) through a second attachment means 118 and a third attachment means 119 on the rear portion (not shown) of the of the vehicle (not shown). A cable (not shown) is used to connect a motor control unit (not shown) to the motor 107(a) at the connecting points 120 disposed on the upper side of the motor 107 (a). Said cables are power cables, which has bigger diameter, more stiffness and less flexibility making it difficult to move around for routing purpose. To overcome the above-mentioned problem a cable clamp 121 is used to guide the power cable. Fig. 3 (b) exemplarily illustrates an exploded view of the cable clamp 121. The cable clamp 121 includes a bottom plate 122 on which the power cables rests, a top plate 123 is placed over the power cables to hold it in place. The top plate 123 is molded with a rubber material 124 on both sides of the top plate 123 to provide friction for clamping and to ensure that no rubbing takes place between the power cables and the top plate 123, which is made of metal part. As per an aspect of the present invention, the 4 mounting points 128 are configured to substantially form a parallelogram 143 wherein more than 80 percent of the traction assembly 107 is disposed within the parallelogram 143 when seen from a top view. This mounting layout enabled ensuring optimal location of the centre of gravity of the traction assembly 107 within the parallelogram 143 and also enables achieving reduced vibration of the traction assembly 107 owing to well balance of the traction generated forces.
[00018] Fig.4 (a) exemplarily illustrates an exploded perspective view of the first attachment means 117. The first attachment means 117 is disposed on the gear box 107 (b) side of the traction assembly 107. The first attachment means 117 is mounted on the pair of the vibration isolating resilient member (not shown in this fig.) disposed at the front of the traction assembly 107 and at the rear portion of the passenger seat assembly (not shown in this fig.) in the vehicle 100. The first attachment means 117 is mounted to the traction assembly by means of a plurality of bolts 125. The second attachment means 118 and the third attachment means 119 is mounted on the traction assembly 107 as exemplarily illustrated in the exploded view shown in Fig 4 (b). The second attachment means 118 is disposed on the rear side of the gear box (not shown in this fig.) by means of a plurality of fasteners 125, and is placed opposite to the first attachment means 117. The third attachment means 119 is disposed at the motor side, in the vicinity of side frames of the vehicle 100. The second and third attachment means (118,119) disposed on the traction assembly 107 are mounted together on the second bridge member 106 (shown in fig. 1) located in the rear portion of the vehicle 100.
[00019] Fig. 5 exemplarily illustrates different views of the first attachment means 117 of the traction assembly. The first attachment means 117 includes a cross member assembly 126. Said cross-member assembly 126 is a horizontal tubular cross section member having a flat surface towards its ends and is curved on both its ends of the cross-member assembly 126. In the present embodiment, the cross-member assembly 126 has two mounting provisions 128 placed at the two extreme ends of the cross-member assembly 126 to receive a bolt (not shown in figure) to be mounted on one or more slots 116 (b) (not shown in this fig.) through said vibration isolating resilient members 113 (shown in figure 2). Additionally, a first bracket 129, a second bracket 130, and a third bracket 131 is disposed in a substantially center portion of the cross-member assembly 126. The first bracket 129 being disposed parallel to the second bracket 130 and said third bracket 131 placed between said first bracket 129 and said second bracket 130 disposed substantially orthogonally to the first and the second bracket to couple the first and the second bracket. The first bracket 129, second bracket 130 and the third bracket 131 being configured to support the traction assembly (not shown in this fig.) on at least one location. This is to ensure that the cross-member assembly 126 is able to withstand the weight of the traction assembly 107 during the vehicle operation. The first bracket 129, the second bracket 130, and the third bracket 131 ensure the required strength for holding the traction assembly (not shown in this fig.) and thus balances the entire mass of said traction assembly (not shown in this fig.). The first attachment means 117 eliminates the twisting of the traction assembly (not shown in this fig.) and ensures that the entire load as well as forces are distributed equally on to the frame of the vehicle.
[00020] Fig. 6 exemplarily illustrates different views of the second attachment means 118 of the traction assembly (not shown in this figure). The second attachment means 118 includes a bracket structure 138, said structure 138 is a c-shaped structure having a first surface 132, and a second surface 133. The first surface 132 and second surface 133 are being disposed parallel to each other and are welded on its top end 134. Said bracket is provided with an upper reinforcing member 135 and a bottom reinforcing member 136 placed on opposite sides to each other. The upper 135 and bottom reinforcement member 136 are configured to avoid the breakage of the bracket and thus to provide strength to said bracket structure 138, while in operation. The bracket structure 138 includes a protruding surface 137 at the top side, where the protruding surface 137 has a circular protrusion profile to accommodate one or more fastening means (not shown). The second attachment means 118 is attached to the traction assembly (not shown in this fig.) by a plurality of fasteners 125 provided at the bottom side of the second attachments means 118.
[0001] Fig. 7 exemplarily illustrates different views of the third attachment means 119 of the traction assembly (not shown in this fig.). One side of the third attachment means 119 is attached to the motor (not shown in this fig.) and other side is connected to the second bridge member (not shown in this fig.) placed at the rear side of the traction assembly (not shown in this fig.). The third attachment means 119 is a metal member 140 having a substantially circular shape with an opening in the centre. This shape of the third attachment means 119 ensures robust abutment of said third attachment means 119 with the lateral side surface of the motor (not shown in this fig.). However, the shape of the third attachment means 119 can be a square, a rectangle or any other shape depending on the motor profiles used in said traction assembly (not shown in this fig.). The opening at the middle reduces the mass of the attachment means and thus reduces the overall cost of the material. The top side of the metal member 140 includes a protruding surface 137 with one circular end protrusion profile 128 to accommodate one or more fastening means (not shown in this fig.). The third attachment means 119 is provided with a plurality of reinforcing members 141 on both sides of said protruding surface 137. In the present embodiment, there are three reinforcing members 141, provided to maintain the strength of the attachment means so that the attachment means is able to hold the weight of motor (not shown in this fig.) in a robust manner during vehicle running condition. In the present embodiment, the third attachment means 119 is provided with a three-point mounting 142 of the metal member 140 with the motor. This three-point mounting 142 avoids twisting and bending by providing strength to the assembly while in operation. Many other improvements and modifications may be incorporated herein without deviating from the scope of the invention.

List of Reference numerals:
100: Three-wheeled vehicle
F: Front portion of 100
R: Rear portion of 100
101: Front frame structure of F
102: Rear frame structure of R
103: Left rear frame member of 102
104: Right rear frame member of 102
105: First bridge member of 102
106: Second bridge member of 102
107: Traction assembly of 100
107 (a): Motor of 107
107 (b): Gear box of 107
108: Driver seat assembly of 100
108(a): Driver seat of 108
109: Driver backrest of 108
111: Front wheel of 100
112: Rear wheel of 100
113: First pair of vibration isolating resilient members disposed on 116 (a)
114 (a): One or more front brackets mounted on 105
114 (b): One or more rear brackets mounted on 106
115: Second pair of vibration isolating resilient members disposed on 116 (b)
116 (a): One or more front slots on 114 (a)
116 (b): One or more rear slots on 114 (b)
117: First attachment means of 107
118: Second attachment means of 107
119: Third attachment means of 107
120: Connecting points of 121
121: cable clamp of power cables
122: Bottom plate of 121
123: Top plate of 121
124: Rubber material of 123
125: Plurality of fasteners of 117, 118
126: Cross member assembly of 117
128: Mounting provisions of 126
129: First bracket of 117
130: Second bracket of 117
131: Third bracket of 117
132: First surface of 118
133: Second surface of 118
134: Top surface of 118
135: Upper reinforcing member of 118
136: Bottom reinforcing member of 118
137: Protruding surface of 118, 119
138: Bracket of 118
140: metal member of 119
141: reinforcing member of 119
142: Three-point mounting of 119
Df: Lateral distance between 113
Dr: Lateral distance between 115
143: Parallelogram formed at 128