# US 7,407,234 B1 · Manual assembly to ABS/TCS/ESP hydraulic units

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- Number: US 7,407,234 B1
- Document ID: US7407234B1
- Status: Granted
- Kind: B1
- Application number: 11/162,641
- Filed: 2005-09-17
- Granted: 2008-08-05
- Earliest claimed: 2005-09-17
- Assignees: Robert Bosch GmbH
- Inventors: Nathan Rex McCormick
- Web page: https://patentgrep.com/patent/US7407234B1

## CPC

- B60T 8/3685: {characterised by the mounting of the modulator unit onto the vehicle}
- F15B 13/0825: {the modular elements being mounted on a common member, e.g. on a rail}
- F15B 13/0842: {Monoblock type valves, e.g. with multiple valve spools in a common housing}
- F15B 13/0885: {using valves combined with other components}
- F16F 15/08: with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)}
- Y10S 303/10: Valve block integrating pump, valves, solenoid, accumulator
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A shock mounting system for affixing a motor driven pump, a plurality of hydraulic valves and accumulators, and motion sensing devices to a vehicle to minimize the transmission of noises to the hydraulic unit and the vehicle. Each mounting point comprising a mounting stud fixed to the vehicle, a hole in the hydraulic unit, a resilient bushing received in the hole, and a plurality of cylindrical segments having outer surfaces contacting the bushing and inner surfaces contacting the stud. Each stud urges the corresponding segments radially outwardly into compressing engagement with an inner surface of the resilient bushing. Each segment includes a retaining rim and each mounting stud includes a corresponding retaining ledge which, upon adequate penetration of the stud into the bushing, allow the segments to collapse under the urging of the resilient bushing radially inwardly inter-engaging the rim and ledges to hold the stud within the bushing.

## Claims

### Claim 1

A hydraulic control unit having a pair of generally parallel cylindrical bores and a third cylindrical bore having a cylindrical axis extending generally perpendicular to the parallel cylindrical bores, the parallel bores adapted to receive a pair of generally parallel support pins and the third cylindrical bore adapted to receive a transverse support pin, and three bushings, each received in a corresponding cylindrical bore for providing mechanical vibration isolation between the support pins and the unit, and further including a plurality of wedges within each bushing to be engaged by and expanded radially outwardly by the introduction of a support pin into the corresponding bushing.

### Claim 2 (depends on 1)

The control unit of claim 1, wherein each wedge includes a retaining rim and the support pins include corresponding retaining ledges whereby, upon adequate penetration of a support pin into a corresponding bushing, the wedges may collapse radially inwardly under the resilient urging of the bushing causing the retaining ledges to engage the retaining rim to prevent inadvertent withdrawal of the support pin from the bushing.

### Claim 3 (depends on 1)

The control unit of claim 1, wherein each segment includes a tapered region near one end of the cylindrical bore and each support pin includes a leading end having a similarly tapered region to mate with the segment tapered regions to facilitate introduction of the support pin into the bore.

### Claim 4

A method of assembling a hydraulic control unit to a vehicle to limit vibrational transmission between the unit and the vehicle, comprising:
forming a cylindrical bore in the unit;
providing a generally cylindrical annular resilient isolator;
lining an annular inner surface of the isolator with a plurality of metallic wedges introducing the wedge lined isolator into the bore;
retaining the isolator within the bore;
inserting a generally cylindrical pin into the isolator annular interior to force the wedges radially outwardly away from one another;
allowing the wedges to rebound somewhat radially inwardly under the urging of the resilient isolator when the inserted pin reaches a preferred penetration to rigidly secure the pin within the isolator.

### Claim 5 (depends on 4)

The method of claim 4, including the preliminary step of fixing the cylindrical pin to the vehicle.

### Claim 6 (depends on 4)

The method of claim 4, wherein the steps of forming, providing, lining, introducing and retaining are performed a plurality of times to create a set of cylindrical bores, each containing a wedge lined isolator, while the steps of inserting and allowing are performed first on a single wedge lined isolator containing cylindrical bore, and including the additional step of rotating the unit about the single inserted pin to align the remaining wedge lined isolator containing cylindrical bores with corresponding pins and thereafter repeating the steps of inserting and allowing in unison for the remaining wedge lined isolator containing cylindrical bores.

### Claim 7 (depends on 4)

The method of claim 4, wherein the force required to insert the a pin into the isolator annular interior and force the wedges radially outwardly away from one another is reduced by forming a taper on a leading end of the generally cylindrical pin and a corresponding taper on the wedge ends last introduced into the bore.

### Claim 8 (depends on 4)

The method of claim 4, wherein the step of lining is performed by radially collapsing the metallic wedges toward one another, and passing the collapsed wedges axially into the isolator.

### Claim 9 (depends on 4)

The method of claim 4 wherein a taper is formed on a leading end of the generally cylindrical pin and the preferred penetration is determined by the taper engaging a correspondingly tapered inner surface of the wedges.

### Claim 10 (depends on 4)

The method of claim 4 wherein the cylindrical pin includes a flange and the preferred penetration is determined by the flange engaging the hydraulic unit.

### Claim 11

A three point shock mounting system for affixing a hydraulic unit of a type having a motor driven pump, a plurality of hydraulic valves and accumulators, and motion sensing devices to a vehicle to minimize the transmission of road and vehicle noises to the hydraulic unit and the transmission of unit operating noise to the vehicle, characterized by each mounting point comprising a mounting stud fixed to the vehicle, a hole in the hydraulic unit, a resilient bushing received in the hole, and a plurality of cylindrical segments having outer surfaces contacting the bushing and inner surfaces contacting the stud; and wherein each stud urges the corresponding segments radially outwardly into compressing engagement with an inner surface of the resilient bushing, and each segment including a retaining rim and each mounting stud including a corresponding retaining ledge which, upon adequate penetration of the stud into the bushing, allow the segments to collapse under the urging of the resilient bushing radially inwardly interengaging the rim and ledges to hold the stud within the bushing.