FORM 2
THE PATENT ACT 1970 (as amended)
[39 OF 1970]
&
The Patents Rules, 2003
PROVISIONAL SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “A MOUNTING SCHEME FOR BRAKE HOSE AND SENSOR CABLE IN
FRONT SUSPENSION MODULE”
Name and address of the Applicant:
TATA MOTORS LIMITED, an Indian company having its registered office at
Bombay house, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001, Maharashtra,
INDIA.
Nationality: INDIAN
The following specification describes the invention.

FIELD OF INVENTION:
This invention relates to brake system used in vehicles and more particularly this is related to the mounting scheme of Wheel speed sensor cable and brake hose routing in front suspension module
BACKGROUND OF INVENTION :
Brake system for a vehicle is provided to stop the vehicle and its main parts consists of brake disc, caliper, brake, pedal brake tubes and hoses. While application of brake pedal brake fluid through reservoir needs to be sent to caliper for actuation of brake pads to come in contact with brake disc and stop the vehicle. Brake tube and brake hose acts as means for carrying brake fluid to caliper while application of brake pedal . And in case of vehicles enabled with ABS, wheel speed sensor cables are required to get the feedback from sensors & transfer to ABS ECU unit.
Mounting scheme for the sensor cable as well as brake hose consists of brackets mounted on suspension member such as strut, stub axle as well on the wheel arch.
Conventionally due to caliper location and wheel speed sensor position front module layout creates complexity in sensor as well as brake hose routing or mounting scheme. And some times special bend tubes are integrated with brake hose to achieve desired routing. Complexity for suspension strut also increases due to no. of brake hose or sensor brackets at different locations. Wheel speed sensor location and orientation on stub axle also increases complexity. Separate antirotation features are provided sometimes for brake hose mounting brackets.
OBJECTS OF THE INVENTION:
1. The main object of the invention is to provide simple & cost effective mounting scheme for Wheel speed sensor cable and brake hose on integrated bracket assembled on strut.
2. Yet another object of this invention is no separate provisions are made for hose mounting centre fitting for anti rotation.
3. Integrated bracket for WSS and brake hose, mounted on vertical centre plane of strut, crossing wheel centre.
4. Single & Simple bracket in design which reduces no. of steps in manufacturing and manufacturing time.

5. Commonisation of front LH & RH strut based on the sensor & hose mounting scheme.
6. Wheel speed sensor located in 45deg, which simplifies cable routing and also assures good accessibility.
BRIEF DESCRIPTION OF INVENTION:
Mounting scheme for front brake hose and wheel speed sensor cable according to this invention consists of sensor cable its one end is mounted on the stub axle and other end on wheel arch bracket, intermediate mounting provision for it is provided on strut mounted bracket. Similarly one end of the brake hose is mounted on wheel arch and other is assembled to caliper, same sensor cable strut mounting bracket is utilized for brake hose also.
The bracket is symmetric about the central vertical plane passing through the axis of strut. This integrated bracket for WSS cable and brake hose which is welded on strut and consists of three slots ; middle one which is semicircular used for brake hose and other two slots are utilized for WSS cable. Hose mounting slot is provided in such a way that its edges acts as antirotation feature for metallic mid crimping, it is bolted on the bracket for which weld nut provision is provided.
Other two slots are symmetric about the vertical plane and passing through the axis of semi circular hole.
Wheel Speed Sensor (WSS) is located in 45 deg orientation on stub axle where bolting arrangement is done for the sensor with unique antirotation slot. This orientation eliminates the complexity in cable in terms of LH & RH sides.
DETAILED DESCRIPTION INVENTION:
Referring now to the drawings where in the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same,
Figure 1 shows details view of brake hose and sensor mounting scheme on Strut and Stub axle.
Figure 2 shows a Rear view of vehicle suspension module (Front), with mounting scheme of brake hose and sensor cable.

Figure 3 shows a Side view of vehicle suspension module, with mounting scheme of brake hose and sensor cable.
Figure 4 shows a Top view of vehicle suspension module, with mounting scheme of brake hose and sensor cable.
Figure 5 shows a mounting details of sensor cable and brake hose on the wheel arch.
Figure 6 shows a details of mounting provisions provided on the suspension members for brake hose and cable routing.
Figure 6a shows details of Stub axle.
Figure 6b shows details of Strut.
Referring to FIG. 1 Mounting scheme consists of brake hose 3 and sensor cable 1. One end connector of brake hose 3, i.e 3a is bolted on the caliper 8( brake disc 6 is located in between the pads of caliper 8) , intermediate part of the brake hose 3 is metallic mid crimping 3b which is assembled on the bracket 2 with screw 13. Other extreme end of the brake hose 3 is mounted on the bracket 7 welded on wheel arch 10 refer FIG 5.Similarly one end of the sensor cable 1 is mounted on the wheel arch 10 with help of rubber grommet 1c as shown in FIG 5. Hose 3 and sensor cable 1 mounting bracket 2 is welded on the strut. Sensor cable 1 is assembled on the bracket 2 with help of rubber grommet 1b. The bracket is symmetric about the vertical plane passing through the axis of strut 4 as shown in FIG 4 due to this LH and RH strut are commonised. One end of the sensor cable 1 consists of sensor 1a which is mounted on the stub axle 5 with screw 11, it senses the tonner ring 12 rotation and provides wheel speed signal to ABS ECU through cable 1. FIG 6 refers to the detailed view of mounting bracket 2 which consists of semicircular slot 2a, its edges acts as an antirotation feature for brake hose mid crimping 3b. Weld nut 2c is assembly provision provided for hose mid crimping 3b. Other two slots 2b are symmetric about the central plane are utilized for the sensor cable rubber grommet 1b assembly. Sensor cable slot 5a on stub axle is oriented at 45 deg in second quadrant, hole 5b is given to pass sensor 1a and tapping 5c is utilized for fastening of sensor on stub axle.
FIG 2 shows the mounting scheme of brake hose 3 and sensor cable 1 in vehicle front view, here all mounting points of brake hose 3 layout can be referred simultaneously.

FIG 3 refers to relative position of brake hose 3 and sensor cable 1 in vehicle inner side view and it also clarifies the relative position of sensor 1a mounted on the stub axle 5.